#if defined(__GNUC__) && !defined(__clang__) #pragma GCC optimize("O3,inline") #endif #include "ant.h" #include "config.h" #include "arena.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "modules/fs.h" #include "modules/timer.h" #include "modules/fetch.h" #include "modules/symbol.h" #define MINICORO_IMPL #include "minicoro.h" _Static_assert(sizeof(double) == 8, "NaN-boxing requires 64-bit IEEE 754 doubles"); _Static_assert(sizeof(uint64_t) == 8, "NaN-boxing requires 64-bit integers"); _Static_assert(sizeof(double) == sizeof(uint64_t), "double and uint64_t must have same size"); #if defined(__STDC_IEC_559__) || defined(__GCC_IEC_559) /* IEEE 754 compliance guaranteed */ #elif defined(__FAST_MATH__) #error "NaN-boxing is incompatible with -ffast-math" #elif DBL_MANT_DIG != 53 || DBL_MAX_EXP != 1024 #error "NaN-boxing requires IEEE 754 binary64 doubles" #endif typedef uint32_t jsoff_t; typedef struct { jsval_t *stack; int depth; int capacity; } this_stack_t; typedef struct call_frame { const char *filename; const char *function_name; const char *code; uint32_t pos; int line; int col; } call_frame_t; typedef struct { call_frame_t *frames; int depth; int capacity; } call_stack_t; typedef enum { CORO_ASYNC_AWAIT, CORO_GENERATOR, CORO_ASYNC_GENERATOR } coroutine_type_t; typedef struct coroutine { struct js *js; coroutine_type_t type; jsval_t scope; jsval_t this_val; jsval_t awaited_promise; jsval_t result; jsval_t async_func; jsval_t *args; int nargs; bool is_settled; bool is_error; bool is_done; jsoff_t resume_point; jsval_t yield_value; struct coroutine *next; mco_coro* mco; bool mco_started; bool is_ready; } coroutine_t; typedef struct { coroutine_t *head; coroutine_t *tail; } coroutine_queue_t; typedef struct { struct js *js; const char *code; size_t code_len; jsval_t closure_scope; jsval_t result; jsval_t promise; bool has_error; coroutine_t *coro; } async_exec_context_t; typedef struct { jsoff_t offset; jsoff_t size; uint8_t type; char detail[128]; } FreeListEntry; static UT_array *global_free_list = NULL; static UT_array *global_scope_stack = NULL; static jsoff_t protected_brk = 0; static const UT_icd jsoff_icd = { .sz = sizeof(jsoff_t), .init = NULL, .copy = NULL, .dtor = NULL, }; static const UT_icd free_list_icd = { .sz = sizeof(FreeListEntry), .init = NULL, .copy = NULL, .dtor = NULL, }; static this_stack_t global_this_stack = {NULL, 0, 0}; static call_stack_t global_call_stack = {NULL, 0, 0}; static coroutine_queue_t pending_coroutines = {NULL, NULL}; typedef struct { const char *name; jsoff_t name_len; bool is_loop; bool is_block; } label_entry_t; static const UT_icd label_entry_icd = { .sz = sizeof(label_entry_t), .init = NULL, .copy = NULL, .dtor = NULL, }; static UT_array *label_stack = NULL; static const char *break_target_label = NULL; static jsoff_t break_target_label_len = 0; static const char *continue_target_label = NULL; static jsoff_t continue_target_label_len = 0; #define F_BREAK_LABEL 1U #define F_CONTINUE_LABEL 2U static uint8_t label_flags = 0; typedef struct esm_module { char *path; char *resolved_path; jsval_t namespace_obj; jsval_t default_export; bool is_loaded; bool is_loading; bool is_json; bool is_text; bool is_image; struct esm_module *next; UT_hash_handle hh; } esm_module_t; typedef struct { esm_module_t *modules; int count; } esm_module_cache_t; typedef struct ant_library { char name[256]; ant_library_init_fn init_fn; UT_hash_handle hh; } ant_library_t; typedef struct { char key[64]; jsoff_t offset; uint32_t hash; UT_hash_handle hh; } prop_cache_entry_t; typedef struct { jsoff_t obj_offset; prop_cache_entry_t *cache; uint32_t hit_count; UT_hash_handle hh; } obj_prop_cache_t; typedef struct interned_string { uint64_t hash; char *str; size_t len; struct interned_string *next; } interned_string_t; typedef struct { uint64_t combined_key; jsoff_t prop_offset; UT_hash_handle hh; } fast_prop_cache_t; typedef struct koff_intern { jsoff_t koff; const char *interned; struct koff_intern *next; } koff_intern_t; #define INTERN_BUCKETS 16384 static interned_string_t *intern_buckets[INTERN_BUCKETS]; static fast_prop_cache_t *fast_cache = NULL; #define KOFF_BUCKETS 16384 static koff_intern_t *koff_buckets[KOFF_BUCKETS]; static const char *INTERN_PROTO = NULL; static const char *INTERN_LENGTH = NULL; static const char *INTERN_PROTOTYPE = NULL; static const char *INTERN_CONSTRUCTOR = NULL; static const char *INTERN_NAME = NULL; static const char *INTERN_MESSAGE = NULL; static const char *INTERN_VALUE = NULL; static const char *INTERN_GET = NULL; static const char *INTERN_SET = NULL; static const char *INTERN_CODE = NULL; static const char *INTERN_SCOPE = NULL; static const char *INTERN_THIS = NULL; static const char *INTERN_NATIVE_FUNC = NULL; static const char *INTERN_ASYNC = NULL; static const char *INTERN_BOUND_THIS = NULL; static const char *INTERN_BOUND_ARGS = NULL; static const char *INTERN_TARGET_FUNC = NULL; static const char *INTERN_ARGUMENTS = NULL; static const char *INTERN_CALLEE = NULL; static const char *INTERN_IDX[10] = {NULL}; #define INTERN_PROP_CACHE_SIZE 4096 typedef struct { jsoff_t obj_off; const char *intern_ptr; jsoff_t prop_off; } intern_prop_cache_entry_t; static intern_prop_cache_entry_t intern_prop_cache[INTERN_PROP_CACHE_SIZE]; typedef struct map_entry { char *key; jsval_t value; UT_hash_handle hh; } map_entry_t; typedef struct set_entry { jsval_t value; char *key; UT_hash_handle hh; } set_entry_t; typedef struct proxy_data { jsoff_t obj_offset; jsval_t target; jsval_t handler; bool revoked; UT_hash_handle hh; } proxy_data_t; typedef struct dynamic_accessors { jsoff_t obj_offset; js_getter_fn getter; js_setter_fn setter; UT_hash_handle hh; } dynamic_accessors_t; typedef struct descriptor_entry { uint64_t key; bool writable; bool enumerable; bool configurable; bool has_getter; bool has_setter; jsval_t getter; jsval_t setter; UT_hash_handle hh; } descriptor_entry_t; typedef struct { jsoff_t obj_off; jsoff_t key_off; } propref_data_t; static const UT_icd propref_icd = { sizeof(propref_data_t), NULL, NULL, NULL }; static UT_array *propref_stack = NULL; #define MAX_FUNC_PARAMS 64 typedef struct parsed_param { jsoff_t name_off; jsoff_t name_len; jsoff_t default_start; jsoff_t default_len; jsoff_t pattern_off; jsoff_t pattern_len; bool is_destruct; } parsed_param_t; typedef struct parsed_func { uint64_t code_hash; jsoff_t body_start; jsoff_t body_len; uint8_t param_count; bool has_rest; bool is_strict; jsoff_t rest_param_start; jsoff_t rest_param_len; parsed_param_t params[MAX_FUNC_PARAMS]; UT_hash_handle hh; } parsed_func_t; static parsed_func_t *func_parse_cache = NULL; static ant_library_t *library_registry = NULL; static esm_module_cache_t global_module_cache = {NULL, 0}; static proxy_data_t *proxy_registry = NULL; static dynamic_accessors_t *accessor_registry = NULL; static descriptor_entry_t *desc_registry = NULL; void js_protect_init_memory(struct js *js) { protected_brk = js_getbrk(js); if (protected_brk < 0x2000) protected_brk = 0x2000; } void ant_register_library(ant_library_init_fn init_fn, const char *name, ...) { va_list args; const char *alias = name; va_start(args, name); while (alias != NULL) { ant_library_t *lib = (ant_library_t *)ANT_GC_MALLOC(sizeof(ant_library_t)); if (!lib) break; strncpy(lib->name, alias, sizeof(lib->name) - 1); lib->name[sizeof(lib->name) - 1] = '\0'; lib->init_fn = init_fn; HASH_ADD_STR(library_registry, name, lib); alias = va_arg(args, const char *); } va_end(args); } static ant_library_t* find_library(const char *specifier, size_t spec_len) { ant_library_t *lib = NULL; char key[256]; if (spec_len >= sizeof(key)) return NULL; memcpy(key, specifier, spec_len); key[spec_len] = '\0'; HASH_FIND_STR(library_registry, key, lib); return lib; } struct js { jsoff_t css; // max observed C stack size jsoff_t lwm; // JS ram low watermark: min free ram observed const char *code; // currently parsed code snippet char *errmsg; // dynamic error message buffer size_t errmsg_size; // size of error message buffer const char *filename; // current filename for error reporting uint8_t tok; // last parsed token value uint8_t consumed; // indicator that last parsed token was consumed uint8_t flags; // execution flags, see F_* constants below #define F_NOEXEC 1U // parse code, but not execute #define F_LOOP 2U // we are inside the loop #define F_CALL 4U // we are inside a function call #define F_BREAK 8U // exit the loop #define F_RETURN 16U // return has been executed #define F_THROW 32U // throw has been executed #define F_SWITCH 64U // we are inside a switch statement #define F_STRICT 128U // strict mode is enabled jsoff_t clen; // code snippet length jsoff_t pos; // current parsing position jsoff_t toff; // offset of the last parsed token jsoff_t tlen; // length of the last parsed token jsoff_t nogc; // entity offset to exclude from GC jsval_t tval; // holds last parsed numeric or string literal value jsval_t scope; // current scope jsval_t this_val; // 'this' value for currently executing function uint8_t *mem; // available JS memory jsoff_t size; // memory size jsoff_t brk; // current mem usage boundary jsoff_t gct; // GC threshold. if brk > gct, trigger GC jsoff_t maxcss; // maximum allowed C stack size usage void *cstk; // C stack pointer at the beginning of js_eval() jsval_t current_func; // currently executing function (for native closures) bool var_warning_shown; // flag to show var deprecation warning only once bool owns_mem; // true if js owns the memory buffer (dynamic allocation) jsoff_t max_size; // maximum allowed memory size (for dynamic growth) bool had_newline; // true if newline was crossed before current token jsval_t thrown_value; // stores the actual thrown value for catch blocks bool is_hoisting; // true during function declaration hoisting pass uint64_t symbol_counter; // counter for generating unique symbol IDs }; enum { TOK_ERR, TOK_EOF, TOK_IDENTIFIER, TOK_NUMBER, TOK_STRING, TOK_SEMICOLON, TOK_BIGINT, TOK_LPAREN, TOK_RPAREN, TOK_LBRACE, TOK_RBRACE, TOK_LBRACKET, TOK_RBRACKET, TOK_ASYNC = 50, TOK_AWAIT, TOK_BREAK, TOK_CASE, TOK_CATCH, TOK_CLASS, TOK_CONST, TOK_CONTINUE, TOK_DEFAULT, TOK_DELETE, TOK_DO, TOK_DEBUGGER, TOK_ELSE, TOK_EXPORT, TOK_FINALLY, TOK_FOR, TOK_FROM, TOK_FUNC, TOK_IF, TOK_IMPORT, TOK_IN, TOK_INSTANCEOF, TOK_LET, TOK_NEW, TOK_OF, TOK_RETURN, TOK_SWITCH, TOK_THIS, TOK_THROW, TOK_TRY, TOK_VAR, TOK_VOID, TOK_WHILE, TOK_WITH, TOK_YIELD, TOK_UNDEF, TOK_NULL, TOK_TRUE, TOK_FALSE, TOK_AS, TOK_STATIC, TOK_WINDOW, TOK_GLOBAL_THIS, TOK_DOT = 100, TOK_CALL, TOK_BRACKET, TOK_POSTINC, TOK_POSTDEC, TOK_NOT, TOK_TILDA, TOK_TYPEOF, TOK_UPLUS, TOK_UMINUS, TOK_EXP, TOK_MUL, TOK_DIV, TOK_REM, TOK_OPTIONAL_CHAIN, TOK_REST, TOK_PLUS, TOK_MINUS, TOK_SHL, TOK_SHR, TOK_ZSHR, TOK_LT, TOK_LE, TOK_GT, TOK_GE, TOK_EQ, TOK_NE, TOK_SEQ, TOK_SNE, TOK_AND, TOK_XOR, TOK_OR, TOK_LAND, TOK_LOR, TOK_NULLISH, TOK_COLON, TOK_Q, TOK_ASSIGN, TOK_PLUS_ASSIGN, TOK_MINUS_ASSIGN, TOK_MUL_ASSIGN, TOK_DIV_ASSIGN, TOK_REM_ASSIGN, TOK_SHL_ASSIGN, TOK_SHR_ASSIGN, TOK_ZSHR_ASSIGN, TOK_AND_ASSIGN, TOK_XOR_ASSIGN, TOK_OR_ASSIGN, TOK_COMMA, TOK_TEMPLATE, TOK_ARROW, TOK_MAX }; static const uint8_t prec_table[TOK_MAX] = { [TOK_LOR] = 4, [TOK_LAND] = 5, [TOK_NULLISH] = 5, [TOK_OR] = 6, [TOK_XOR] = 7, [TOK_AND] = 8, [TOK_EQ] = 9, [TOK_NE] = 9, [TOK_SEQ] = 9, [TOK_SNE] = 9, [TOK_LT] = 10, [TOK_LE] = 10, [TOK_GT] = 10, [TOK_GE] = 10, [TOK_INSTANCEOF] = 10, [TOK_IN] = 10, [TOK_SHL] = 11, [TOK_SHR] = 11, [TOK_ZSHR] = 11, [TOK_PLUS] = 12, [TOK_MINUS] = 12, [TOK_MUL] = 13, [TOK_DIV] = 13, [TOK_REM] = 13, [TOK_EXP] = 14, }; enum { T_OBJ, T_PROP, T_STR, T_UNDEF, T_NULL, T_NUM, T_BOOL, T_FUNC, T_CODEREF, T_CFUNC, T_ERR, T_ARR, T_PROMISE, T_TYPEDARRAY, T_BIGINT, T_PROPREF, T_SYMBOL, T_GENERATOR }; static const char *typestr_raw(uint8_t t) { const char *names[] = { "object", "prop", "string", "undefined", "null", "number", "boolean", "function", "coderef", "cfunc", "err", "array", "promise", "typedarray", "bigint", "propref", "symbol", "generator" }; return (t < sizeof(names) / sizeof(names[0])) ? names[t] : "??"; } static jsval_t tov(double d) { union { double d; jsval_t v; } u = {d}; return u.v; } static double tod(jsval_t v) { union { jsval_t v; double d; } u = {v}; return u.d; } #define NANBOX_PREFIX 0x7FC0000000000000ULL #define NANBOX_PREFIX_CHK 0x3FEULL #define NANBOX_TYPE_SHIFT 48 #define NANBOX_TYPE_MASK 0x1F #define NANBOX_DATA_MASK 0x0000FFFFFFFFFFFFULL static bool is_tagged(jsval_t v) { return (v >> 53) == NANBOX_PREFIX_CHK; } size_t vdata(jsval_t v) { return (size_t)(v & NANBOX_DATA_MASK); } #define PROPREF_STACK_FLAG 0x800000000000ULL #define PROPREF_INDEX_MASK 0x7FFFFFFFFFFFULL #define PROPREF_OFF_MASK 0xFFFFFFU #define PROPREF_PAYLOAD 0xFFFFFFULL #define PROPREF_KEY_SHIFT 24U static jsoff_t coderefoff(jsval_t v) { return v & PROPREF_OFF_MASK; } static jsoff_t codereflen(jsval_t v) { return (v >> 24U) & PROPREF_OFF_MASK; } static inline propref_data_t *propref_get_entry(jsval_t v) { uint64_t data = v & NANBOX_DATA_MASK; if (!(data & PROPREF_STACK_FLAG)) return NULL; int idx = (int)(data & PROPREF_INDEX_MASK); if (!propref_stack || idx < 0 || idx >= (int)utarray_len(propref_stack)) return NULL; return (propref_data_t *)utarray_eltptr(propref_stack, (unsigned)idx); } static jsoff_t propref_obj(jsval_t v) { propref_data_t *entry = propref_get_entry(v); if (entry) return entry->obj_off; uint64_t data = v & NANBOX_DATA_MASK; return (data & PROPREF_STACK_FLAG) ? 0 : (data & PROPREF_OFF_MASK); } static jsoff_t propref_key(jsval_t v) { propref_data_t *entry = propref_get_entry(v); if (entry) return entry->key_off; uint64_t data = v & NANBOX_DATA_MASK; return (data & PROPREF_STACK_FLAG) ? 0 : ((data >> PROPREF_KEY_SHIFT) & PROPREF_OFF_MASK); } static jsoff_t offtolen(jsoff_t off) { return (off >> 2) - 1; } static jsoff_t align32(jsoff_t v) { return ((v + 3) >> 2) << 2; } static void saveoff(struct js *js, jsoff_t off, jsoff_t val) { memcpy(&js->mem[off], &val, sizeof(val)); } static void saveval(struct js *js, jsoff_t off, jsval_t val) { memcpy(&js->mem[off], &val, sizeof(val)); } static const char *typestr(uint8_t t) { if (t == T_CFUNC) return "function"; if (t == T_ARR) return "object"; if (t == T_NULL) return "object"; return typestr_raw(t); } uint8_t vtype(jsval_t v) { return is_tagged(v) ? ((v >> NANBOX_TYPE_SHIFT) & NANBOX_TYPE_MASK) : (uint8_t)T_NUM; } static jsval_t mkval(uint8_t type, uint64_t data) { return NANBOX_PREFIX | ((jsval_t)(type & NANBOX_TYPE_MASK) << NANBOX_TYPE_SHIFT) | (data & NANBOX_DATA_MASK); } jsval_t js_obj_to_func(jsval_t obj) { return mkval(T_FUNC, vdata(obj)); } jsval_t js_mktypedarray(void *data) { return mkval(T_TYPEDARRAY, (uintptr_t)data); } void *js_gettypedarray(jsval_t val) { if (vtype(val) != T_TYPEDARRAY) return NULL; return (void *)vdata(val); } static jsval_t mkcoderef(jsval_t off, jsoff_t len) { return mkval(T_CODEREF, (off & PROPREF_OFF_MASK) | ((jsval_t)(len & PROPREF_OFF_MASK) << 24U)); } static jsval_t mkpropref(jsoff_t obj_off, jsoff_t key_off) { if (obj_off <= PROPREF_OFF_MASK && key_off <= PROPREF_OFF_MASK) { return mkval(T_PROPREF, (obj_off & PROPREF_OFF_MASK) | ((jsval_t)(key_off & PROPREF_OFF_MASK) << 24U)); } if (!propref_stack) utarray_new(propref_stack, &propref_icd); if (utarray_len(propref_stack) > 1024) utarray_clear(propref_stack); propref_data_t entry = { obj_off, key_off }; utarray_push_back(propref_stack, &entry); int idx = (int)utarray_len(propref_stack) - 1; return mkval(T_PROPREF, PROPREF_STACK_FLAG | (uint64_t)idx); } static inline bool is_err(jsval_t v) { return vtype(v) == T_ERR; } static inline bool is_null(jsval_t v) { return vtype(v) == T_NULL; } static inline bool is_undefined(jsval_t v) { return vtype(v) == T_UNDEF; } static uint8_t unhex(uint8_t c) { return (c >= '0' && c <= '9') ? (uint8_t) (c - '0') : (c >= 'a' && c <= 'f') ? (uint8_t) (c - 'W') : (c >= 'A' && c <= 'F') ? (uint8_t) (c - '7') : 0; } static bool is_space(int c) { return c == ' ' || c == '\r' || c == '\n' || c == '\t' || c == '\f' || c == '\v' || c == 0xA0; } static bool is_digit(int c) { return c >= '0' && c <= '9'; } static bool is_xdigit(int c) { return is_digit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); } static bool is_alpha(int c) { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); } static bool is_ident_begin(int c) { return c == '_' || c == '$' || is_alpha(c) || (c & 0x80); } static bool is_ident_continue(int c) { return c == '_' || c == '$' || is_alpha(c) || is_digit(c) || (c & 0x80); } static bool is_unary(uint8_t tok) { return (tok >= TOK_POSTINC && tok <= TOK_UMINUS) || tok == TOK_NOT || tok == TOK_TILDA || tok == TOK_TYPEOF || tok == TOK_VOID; } static bool is_assign(uint8_t tok) { return (tok >= TOK_ASSIGN && tok <= TOK_OR_ASSIGN); } static bool is_keyword_propname(uint8_t tok) { return (tok >= TOK_ASYNC && tok <= TOK_GLOBAL_THIS) || tok == TOK_TYPEOF; } static uint32_t js_to_uint32(double d) { if (!isfinite(d) || d == 0) return 0; double sign = (d < 0) ? -1.0 : 1.0; double posInt = sign * floor(fabs(d)); double val = fmod(posInt, 4294967296.0); if (val < 0) val += 4294967296.0; return (uint32_t) val; } static int32_t js_to_int32(double d) { uint32_t uint32 = js_to_uint32(d); if (uint32 >= 2147483648U) return (int32_t)(uint32 - 4294967296.0); return (int32_t) uint32; } typedef struct { const char *code; jsoff_t clen, pos; uint8_t tok, consumed; } js_parse_state_t; #define JS_SAVE_STATE(js, state) do { \ (state).code = (js)->code; \ (state).clen = (js)->clen; \ (state).pos = (js)->pos; \ (state).tok = (js)->tok; \ (state).consumed = (js)->consumed; \ } while(0) #define JS_RESTORE_STATE(js, state) do { \ (js)->code = (state).code; \ (js)->clen = (state).clen; \ (js)->pos = (state).pos; \ (js)->tok = (state).tok; \ (js)->consumed = (state).consumed; \ } while(0) static inline jsoff_t loadoff(struct js *js, jsoff_t off) { assert(js->brk <= js->size); return *(jsoff_t *)(&js->mem[off]); } static bool is_arr_off(struct js *js, jsoff_t off) { return (loadoff(js, off) & ARRMASK) != 0; } static jsoff_t vstrlen(struct js *js, jsval_t v) { return offtolen(loadoff(js, (jsoff_t) vdata(v))); } static inline jsval_t loadval(struct js *js, jsoff_t off) { return *(jsval_t *)(&js->mem[off]); } static jsval_t upper(struct js *js, jsval_t scope) { return mkval(T_OBJ, loadoff(js, (jsoff_t) (vdata(scope) + sizeof(jsoff_t)))); } #define CHECKV(_v) do { if (is_err(_v)) { res = (_v); goto done; } } while (0) #define EXPECT(_tok, _e) do { if (next(js) != _tok) { _e; return js_mkerr_typed(js, JS_ERR_SYNTAX, "parse error"); }; js->consumed = 1; } while (0) static bool is_proxy(struct js *js, jsval_t obj); static bool streq(const char *buf, size_t len, const char *p, size_t n); static size_t tostr(struct js *js, jsval_t value, char *buf, size_t len); static size_t strpromise(struct js *js, jsval_t value, char *buf, size_t len); static size_t js_to_pcre2_pattern(const char *src, size_t src_len, char *dst, size_t dst_size); static bool continue_targets_innermost_loop(void); static bool is_continue_target(const char *name, jsoff_t len); static bool is_this_loop_continue_target(int depth_at_entry); static void clear_continue_label(void); static void clear_break_label(void); static jsval_t js_stmt_impl(struct js *js); static inline jsoff_t esize(jsoff_t w); static bool parse_func_params(struct js *js, uint8_t *flags, int *out_count); static double js_to_number(struct js *js, jsval_t arg); static jsval_t js_call_toString(struct js *js, jsval_t value); static jsval_t js_expr(struct js *js); static jsval_t js_eval_slice(struct js *js, jsoff_t off, jsoff_t len); static jsval_t js_eval_str(struct js *js, const char *code, jsoff_t len); static jsval_t js_stmt(struct js *js); static jsval_t js_assignment(struct js *js); static jsval_t js_arrow_func(struct js *js, jsoff_t params_start, jsoff_t params_end, bool is_async); static jsval_t js_while(struct js *js); static jsval_t js_do_while(struct js *js); static jsval_t js_block_or_stmt(struct js *js); static jsval_t js_var_decl(struct js *js); static jsval_t js_regex_literal(struct js *js); static jsval_t js_try(struct js *js); static jsval_t js_switch(struct js *js); static jsval_t do_op(struct js *, uint8_t op, jsval_t l, jsval_t r); static jsval_t do_instanceof(struct js *js, jsval_t l, jsval_t r); static jsval_t do_in(struct js *js, jsval_t l, jsval_t r); static jsval_t resolveprop(struct js *js, jsval_t v); static jsoff_t free_list_allocate(size_t size); static jsoff_t lkp(struct js *js, jsval_t obj, const char *buf, size_t len); static jsoff_t lkp_interned(struct js *js, jsval_t obj, const char *search_intern, size_t len); static inline const char *get_koff_intern(jsoff_t koff); static jsval_t js_import_stmt(struct js *js); static jsval_t js_export_stmt(struct js *js); static jsval_t builtin_Object(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_Promise(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_Promise_resolve(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_Promise_reject(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_Promise_try(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_Promise_all(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_Promise_race(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_promise_then(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_promise_catch(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_promise_finally(struct js *js, jsval_t *args, int nargs); static jsval_t proxy_get(struct js *js, jsval_t proxy, const char *key, size_t key_len); static jsval_t proxy_set(struct js *js, jsval_t proxy, const char *key, size_t key_len, jsval_t value); static jsval_t proxy_has(struct js *js, jsval_t proxy, const char *key, size_t key_len); static jsval_t proxy_delete(struct js *js, jsval_t proxy, const char *key, size_t key_len); static jsval_t builtin_function_call(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_function_apply(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_function_bind(struct js *js, jsval_t *args, int nargs); static bool try_dynamic_setter(struct js *js, jsval_t obj, const char *key, size_t key_len, jsval_t value); static jsval_t call_js(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope); static jsval_t call_js_internal(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *bound_args, int bound_argc); static jsval_t call_js_internal_nfe(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *bound_args, int bound_argc, jsval_t func_name, jsval_t func_val); static jsval_t call_js_with_args(struct js *js, jsval_t fn, jsval_t *args, int nargs); static jsval_t call_js_code_with_args(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *args, int nargs); static jsval_t call_js_code_with_args_nfe(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *args, int nargs, jsval_t func_name, jsval_t func_val); static inline bool push_this(jsval_t this_value); static inline jsval_t pop_this(void); static inline jsval_t peek_this(void); jsval_t js_get_proto(struct js *js, jsval_t obj); void js_set_proto(struct js *js, jsval_t obj, jsval_t proto); jsval_t js_setprop(struct js *js, jsval_t obj, jsval_t k, jsval_t v); static jsoff_t lkp_proto(struct js *js, jsval_t obj, const char *key, size_t len); jsval_t js_get_ctor_proto(struct js *js, const char *name, size_t len); static jsval_t get_prototype_for_type(struct js *js, uint8_t type); static jsval_t get_proto(struct js *js, jsval_t obj); static void set_proto(struct js *js, jsval_t obj, jsval_t proto); static jsval_t get_ctor_proto(struct js *js, const char *name, size_t len); static jsval_t setprop(struct js *js, jsval_t obj, jsval_t k, jsval_t v); static jsval_t setprop_nonconfigurable(struct js *js, jsval_t obj, const char *key, size_t keylen, jsval_t v); static jsoff_t lkp(struct js *js, jsval_t obj, const char *key, size_t len); static jsval_t resolveprop(struct js *js, jsval_t v); static descriptor_entry_t *lookup_descriptor(jsoff_t obj_off, const char *key, size_t klen); static jsval_t unwrap_primitive(struct js *js, jsval_t val) { if (vtype(val) != T_OBJ) return val; jsoff_t prim_off = lkp(js, val, "__primitive_value__", 19); if (prim_off == 0) return val; return resolveprop(js, mkval(T_PROP, prim_off)); } static jsval_t to_string_val(struct js *js, jsval_t val) { uint8_t t = vtype(val); if (t == T_STR) return val; if (t == T_OBJ) { jsoff_t prim_off = lkp(js, val, "__primitive_value__", 19); if (prim_off != 0) { jsval_t prim = resolveprop(js, mkval(T_PROP, prim_off)); if (vtype(prim) == T_STR) return prim; } jsoff_t ts_off = lkp_proto(js, val, "toString", 8); if (ts_off != 0) { jsval_t ts_fn = resolveprop(js, mkval(T_PROP, ts_off)); if (vtype(ts_fn) == T_FUNC || vtype(ts_fn) == T_CFUNC) { jsval_t saved_this = js->this_val; js->this_val = val; jsval_t result = call_js_with_args(js, ts_fn, NULL, 0); js->this_val = saved_this; if (vtype(result) == T_STR) return result; } } } const char *s = js_str(js, val); return js_mkstr(js, s, strlen(s)); } static void free_coroutine(coroutine_t *coro); static bool has_ready_coroutines(void); static size_t calculate_coro_stack_size(void) { const char *env_stack = getenv("ANT_CORO_STACK_SIZE"); if (env_stack) { size_t size = (size_t)atoi(env_stack) * 1024; if (size >= 16 * 1024 && size <= 8 * 1024 * 1024) return size; } return 128 * 1024; } static void mco_async_entry(mco_coro* mco) { async_exec_context_t *ctx = (async_exec_context_t *)mco_get_user_data(mco); struct js *js = ctx->js; coroutine_t *coro = ctx->coro; jsval_t result; if (coro && coro->nargs > 0 && coro->args) { result = call_js_code_with_args(js, ctx->code, (jsoff_t)ctx->code_len, ctx->closure_scope, coro->args, coro->nargs); } else { result = call_js(js, ctx->code, (jsoff_t)ctx->code_len, ctx->closure_scope); } ctx->result = result; ctx->has_error = is_err(result); if (ctx->has_error) { js_reject_promise(js, ctx->promise, result); } else { js_resolve_promise(js, ctx->promise, result); } } static void enqueue_coroutine(coroutine_t *coro) { if (!coro) return; coro->next = NULL; if (pending_coroutines.tail && pending_coroutines.tail != coro) { pending_coroutines.tail->next = coro; pending_coroutines.tail = coro; } else if (!pending_coroutines.tail) { pending_coroutines.head = coro; pending_coroutines.tail = coro; } } static coroutine_t *dequeue_coroutine(void) { coroutine_t *coro = pending_coroutines.head; if (coro) { pending_coroutines.head = coro->next; if (!pending_coroutines.head) { pending_coroutines.tail = NULL; } coro->next = NULL; } return coro; } static bool has_pending_coroutines(void) { return pending_coroutines.head != NULL; } static bool has_ready_coroutines(void) { coroutine_t *temp = pending_coroutines.head; while (temp) { if (temp->is_ready) return true; temp = temp->next; } return false; } void js_poll_events(struct js *js) { fetch_poll_events(); fs_poll_events(); int has_timers = has_pending_timers(); if (has_timers) { int64_t next_timeout_ms = get_next_timer_timeout(); if (next_timeout_ms <= 0) process_timers(js); } process_immediates(js); process_microtasks(js); coroutine_t *temp = pending_coroutines.head; coroutine_t *prev = NULL; while (temp) { coroutine_t *next = temp->next; if (temp->is_ready && temp->mco && mco_status(temp->mco) == MCO_SUSPENDED) { if (prev) { prev->next = next; } else { pending_coroutines.head = next; } if (pending_coroutines.tail == temp) { pending_coroutines.tail = prev; } mco_result res = mco_resume(temp->mco); if (res == MCO_SUCCESS && mco_status(temp->mco) == MCO_DEAD) { free_coroutine(temp); } else if (res == MCO_SUCCESS) { temp->is_ready = false; temp->next = NULL; if (pending_coroutines.tail) { pending_coroutines.tail->next = temp; } else { pending_coroutines.head = temp; } pending_coroutines.tail = temp; } else { free_coroutine(temp); } temp = next; } else { prev = temp; temp = next; } } } void js_run_event_loop(struct js *js) { while (has_pending_microtasks() || has_pending_timers() || has_pending_immediates() || has_pending_coroutines() || has_pending_fetches() || has_pending_fs_ops()) { js_poll_events(js); if (!has_pending_microtasks() && !has_pending_immediates() && has_pending_timers() && !has_ready_coroutines()) { int64_t next_timeout_ms = get_next_timer_timeout(); if (next_timeout_ms > 0) usleep(next_timeout_ms > 1000000 ? 1000000 : next_timeout_ms * 1000); } if (!has_pending_microtasks() && !has_pending_timers() && !has_pending_immediates() && !has_pending_coroutines() && !has_pending_fetches() && !has_pending_fs_ops()) break; } js_poll_events(js); } static jsval_t start_async_in_coroutine(struct js *js, const char *code, size_t code_len, jsval_t closure_scope, jsval_t *args, int nargs) { jsval_t promise = js_mkpromise(js); async_exec_context_t *ctx = (async_exec_context_t *)ANT_GC_MALLOC(sizeof(async_exec_context_t)); if (!ctx) return js_mkerr(js, "out of memory for async context"); ctx->js = js; ctx->code = code; ctx->code_len = code_len; ctx->closure_scope = closure_scope; ctx->result = js_mkundef(); ctx->promise = promise; ctx->has_error = false; ctx->coro = NULL; size_t stack_size = calculate_coro_stack_size(); mco_desc desc = mco_desc_init(mco_async_entry, stack_size); desc.user_data = ctx; mco_coro* mco = NULL; mco_result res = mco_create(&mco, &desc); if (res != MCO_SUCCESS) { ANT_GC_FREE(ctx); return js_mkerr(js, "failed to create minicoro coroutine"); } coroutine_t *coro = (coroutine_t *)ANT_GC_MALLOC(sizeof(coroutine_t)); if (!coro) { mco_destroy(mco); ANT_GC_FREE(ctx); return js_mkerr(js, "out of memory for coroutine"); } coro->js = js; coro->type = CORO_ASYNC_AWAIT; coro->scope = closure_scope; coro->this_val = js->this_val; coro->awaited_promise = js_mkundef(); coro->result = js_mkundef(); coro->async_func = js->current_func; if (nargs > 0) { coro->args = (jsval_t *)ANT_GC_MALLOC(sizeof(jsval_t) * nargs); if (coro->args) memcpy(coro->args, args, sizeof(jsval_t) * nargs); } else { coro->args = NULL; } coro->nargs = nargs; coro->is_settled = false; coro->is_error = false; coro->is_done = false; coro->resume_point = 0; coro->yield_value = js_mkundef(); coro->next = NULL; coro->mco = mco; coro->mco_started = false; coro->is_ready = true; ctx->coro = coro; enqueue_coroutine(coro); res = mco_resume(mco); if (res != MCO_SUCCESS && mco_status(mco) != MCO_DEAD) { dequeue_coroutine(); free_coroutine(coro); ANT_GC_FREE(ctx); return js_mkerr(js, "failed to start coroutine"); } coro->mco_started = true; if (mco_status(mco) == MCO_DEAD) { dequeue_coroutine(); free_coroutine(coro); ANT_GC_FREE(ctx); } return promise; } static void free_coroutine(coroutine_t *coro) { if (coro) { if (coro->mco) { if (mco_running() == coro->mco) fprintf(stderr, "WARNING: Attempting to free a running coroutine\n"); mco_destroy(coro->mco); coro->mco = NULL; } if (coro->args) ANT_GC_FREE(coro->args); ANT_GC_FREE(coro); } } static jsval_t resume_coroutine_wrapper(struct js *js, jsval_t *args, int nargs); static jsval_t reject_coroutine_wrapper(struct js *js, jsval_t *args, int nargs); static void setlwm(struct js *js) { jsoff_t n = 0, css = 0; if (js->brk < js->size) n = js->size - js->brk; if (js->lwm > n) js->lwm = n; if ((char *) js->cstk > (char *) &n) css = (jsoff_t) ((char *) js->cstk - (char *) &n); if (css > js->css) js->css = css; } static size_t cpy(char *dst, size_t dstlen, const char *src, size_t srclen) { size_t i = 0; for (i = 0; i < dstlen && i < srclen && src[i] != 0; i++) dst[i] = src[i]; if (dstlen > 0) dst[i < dstlen ? i : dstlen - 1] = '\0'; return i; } static inline size_t uint_to_str(char *buf, size_t bufsize, unsigned int val) { if (bufsize == 0) return 0; if (val == 0) { buf[0] = '0'; buf[1] = '\0'; return 1; } char temp[12]; size_t len = 0; while (val > 0 && len < sizeof(temp)) { temp[len++] = '0' + (val % 10); val /= 10; } if (len >= bufsize) len = bufsize - 1; for (size_t i = 0; i < len; i++) { buf[i] = temp[len - 1 - i]; } buf[len] = '\0'; return len; } #define MAX_STRINGIFY_DEPTH 64 #define MAX_MULTIREF_OBJS 128 static jsval_t stringify_stack[MAX_STRINGIFY_DEPTH]; static int stringify_depth = 0; static int stringify_indent = 0; static jsval_t multiref_objs[MAX_MULTIREF_OBJS]; static int multiref_ids[MAX_MULTIREF_OBJS]; static int multiref_count = 0; static int multiref_next_id = 0; static void scan_refs(struct js *js, jsval_t value); static int find_multiref(jsval_t obj) { for (int i = 0; i < multiref_count; i++) { if (multiref_objs[i] == obj) return multiref_ids[i]; } return 0; } static bool is_on_stack(jsval_t obj) { for (int i = 0; i < stringify_depth; i++) { if (stringify_stack[i] == obj) return true; } return false; } static void mark_multiref(jsval_t obj) { for (int i = 0; i < multiref_count; i++) { if (multiref_objs[i] == obj) { if (multiref_ids[i] == 0) multiref_ids[i] = ++multiref_next_id; return; } } if (multiref_count < MAX_MULTIREF_OBJS) { multiref_objs[multiref_count] = obj; multiref_ids[multiref_count] = 0; multiref_count++; } } static void scan_obj_refs(struct js *js, jsval_t obj) { if (is_on_stack(obj)) { mark_multiref(obj); return; } if (stringify_depth >= MAX_STRINGIFY_DEPTH) return; stringify_stack[stringify_depth++] = obj; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); scan_refs(js, val); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } jsoff_t proto_off = lkp_interned(js, obj, INTERN_PROTO, 9); if (proto_off != 0) { jsval_t proto_val = resolveprop(js, mkval(T_PROP, proto_off)); if (vtype(proto_val) == T_OBJ) scan_refs(js, proto_val); } stringify_depth--; } static void scan_arr_refs(struct js *js, jsval_t obj) { if (is_on_stack(obj)) { mark_multiref(obj); return; } if (stringify_depth >= MAX_STRINGIFY_DEPTH) return; stringify_stack[stringify_depth++] = obj; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); scan_refs(js, val); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } stringify_depth--; } static void scan_func_refs(struct js *js, jsval_t value) { jsval_t func_obj = mkval(T_OBJ, vdata(value)); if (is_on_stack(func_obj)) { mark_multiref(func_obj); return; } if (stringify_depth >= MAX_STRINGIFY_DEPTH) return; stringify_stack[stringify_depth++] = func_obj; jsoff_t next = loadoff(js, (jsoff_t) vdata(func_obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); scan_refs(js, val); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } stringify_depth--; } static void scan_refs(struct js *js, jsval_t value) { switch (vtype(value)) { case T_OBJ: scan_obj_refs(js, value); break; case T_ARR: scan_arr_refs(js, value); break; case T_FUNC: scan_func_refs(js, value); break; default: break; } } static int get_circular_ref(jsval_t obj) { if (is_on_stack(obj)) { int ref = find_multiref(obj); return ref ? ref : -1; } return 0; } static bool is_circular(jsval_t obj) { return is_on_stack(obj); } static int get_self_ref(jsval_t obj) { return find_multiref(obj); } static void push_stringify(jsval_t obj) { if (stringify_depth < MAX_STRINGIFY_DEPTH) { stringify_stack[stringify_depth++] = obj; } } static void pop_stringify(void) { if (stringify_depth > 0) stringify_depth--; } static size_t add_indent(char *buf, size_t len, int level) { size_t n = 0; for (int i = 0; i < level * 2 && n < len; i++) { buf[n++] = ' '; } return n; } static size_t strbigint(struct js *js, jsval_t value, char *buf, size_t len); static size_t strarr(struct js *js, jsval_t obj, char *buf, size_t len) { int ref = get_circular_ref(obj); if (ref) return ref > 0 ? (size_t) snprintf(buf, len, "[Circular *%d]", ref) : cpy(buf, len, "[Circular]", 10); push_stringify(obj); size_t n = cpy(buf, len, "[ ", 2); jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); jsoff_t length = 0; jsoff_t scan = next; while (scan < js->brk && scan != 0) { jsoff_t koff = loadoff(js, scan + (jsoff_t) sizeof(scan)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, "length", 6)) { jsval_t val = loadval(js, scan + (jsoff_t) (sizeof(scan) + sizeof(koff))); if (vtype(val) == T_NUM) length = (jsoff_t) tod(val); break; } scan = loadoff(js, scan) & ~(3U | CONSTMASK | ARRMASK); } for (jsoff_t i = 0; i < length; i++) { if (i > 0) n += cpy(buf + n, len - n, ", ", 2); char idx[16]; snprintf(idx, sizeof(idx), "%u", (unsigned) i); jsoff_t idxlen = (jsoff_t) strlen(idx); jsoff_t prop = next; jsval_t val = js_mkundef(); bool found = false; while (prop < js->brk && prop != 0) { jsoff_t koff = loadoff(js, prop + (jsoff_t) sizeof(prop)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, idx, idxlen)) { val = loadval(js, prop + (jsoff_t) (sizeof(prop) + sizeof(koff))); found = true; break; } prop = loadoff(js, prop) & ~(3U | CONSTMASK | ARRMASK); } if (found) { n += tostr(js, val, buf + n, len - n); } else { n += cpy(buf + n, len - n, "undefined", 9); } } n += cpy(buf + n, len - n, " ]", 2); pop_stringify(); return n; } static size_t array_to_string(struct js *js, jsval_t obj, char *buf, size_t len) { if (is_circular(obj)) return cpy(buf, len, "", 0); push_stringify(obj); size_t n = 0; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); jsoff_t length = 0; jsoff_t scan = next; while (scan < js->brk && scan != 0) { jsoff_t koff = loadoff(js, scan + (jsoff_t) sizeof(scan)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, "length", 6)) { jsval_t val = loadval(js, scan + (jsoff_t) (sizeof(scan) + sizeof(koff))); if (vtype(val) == T_NUM) length = (jsoff_t) tod(val); break; } scan = loadoff(js, scan) & ~(3U | CONSTMASK | ARRMASK); } for (jsoff_t i = 0; i < length; i++) { if (i > 0) n += cpy(buf + n, len - n, ",", 1); char idx[16]; snprintf(idx, sizeof(idx), "%u", (unsigned) i); jsoff_t idxlen = (jsoff_t) strlen(idx); jsoff_t prop = next; jsval_t val = js_mkundef(); bool found = false; while (prop < js->brk && prop != 0) { jsoff_t koff = loadoff(js, prop + (jsoff_t) sizeof(prop)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, idx, idxlen)) { val = loadval(js, prop + (jsoff_t) (sizeof(prop) + sizeof(koff))); found = true; break; } prop = loadoff(js, prop) & ~(3U | CONSTMASK | ARRMASK); } if (found) { n += tostr(js, val, buf + n, len - n); } else { n += cpy(buf + n, len - n, "", 0); } } pop_stringify(); return n; } static size_t strdate(struct js *js, jsval_t obj, char *buf, size_t len) { jsoff_t time_off = lkp(js, obj, "__time", 6); if (time_off == 0) return cpy(buf, len, "Invalid Date", 12); jsval_t time_val = resolveprop(js, mkval(T_PROP, time_off)); if (vtype(time_val) != T_NUM) return cpy(buf, len, "Invalid Date", 12); double timestamp_ms = tod(time_val); time_t timestamp_sec = (time_t)(timestamp_ms / 1000.0); struct tm *tm_local = localtime(×tamp_sec); if (!tm_local) return cpy(buf, len, "Invalid Date", 12); char date_part[64]; strftime(date_part, sizeof(date_part), "%a %b %d %Y %H:%M:%S", tm_local); time_t now = timestamp_sec; struct tm *gm = gmtime(&now); struct tm local_copy = *tm_local; time_t local_time = mktime(&local_copy); time_t gmt_time = mktime(gm); long offset_sec = (long)difftime(local_time, gmt_time); int offset_hours = (int)(offset_sec / 3600); int offset_mins = (int)(labs(offset_sec) % 3600) / 60; char tz_name[64]; strftime(tz_name, sizeof(tz_name), "%Z", tm_local); return (size_t) snprintf(buf, len, "%s GMT%+03d%02d (%s)", date_part, offset_hours, offset_mins, tz_name); } static jsoff_t vstr(struct js *js, jsval_t value, jsoff_t *len); static size_t strstring(struct js *js, jsval_t value, char *buf, size_t len); static size_t strkey(struct js *js, jsval_t value, char *buf, size_t len); static bool is_valid_identifier(const char *str, jsoff_t slen) { if (slen == 0) return false; char c = str[0]; if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' || c == '$')) return false; for (jsoff_t i = 1; i < slen; i++) { c = str[i]; if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_' || c == '$')) return false; } return true; } static size_t strkey(struct js *js, jsval_t value, char *buf, size_t len) { jsoff_t slen, off = vstr(js, value, &slen); const char *str = (const char *) &js->mem[off]; const char *sym_desc = get_symbol_description_from_key(str, slen); if (sym_desc) { size_t n = 0; n += cpy(buf + n, len - n, "[", 1); n += cpy(buf + n, len - n, sym_desc, strlen(sym_desc)); n += cpy(buf + n, len - n, "]", 1); return n; } if (is_valid_identifier(str, slen)) { return cpy(buf, len, str, slen); } return strstring(js, value, buf, len); } static size_t print_prototype(struct js *js, jsval_t proto_val, char *buf, size_t len, bool *first) { size_t n = 0; int ref = get_circular_ref(proto_val); if (ref) { if (!*first) n += cpy(buf + n, len - n, ",\n", 2); *first = false; n += add_indent(buf + n, len - n, stringify_indent); n += ref > 0 ? (size_t) snprintf(buf + n, len - n, "[Prototype]: [Circular *%d]", ref) : cpy(buf + n, len - n, "[Prototype]: [Circular]", 23); return n; } push_stringify(proto_val); bool has_proto_props = false; jsoff_t proto_next = loadoff(js, (jsoff_t) vdata(proto_val)) & ~(3U | CONSTMASK | ARRMASK); while (proto_next < js->brk && proto_next != 0) { jsoff_t pkoff = loadoff(js, proto_next + (jsoff_t) sizeof(proto_next)); jsoff_t pklen = offtolen(loadoff(js, pkoff)); const char *pkstr = (const char *) &js->mem[pkoff + sizeof(jsoff_t)]; const char *tag_key = get_toStringTag_sym_key(); size_t tag_key_len = strlen(tag_key); if (!streq(pkstr, pklen, "__proto__", 9) && !streq(pkstr, pklen, "constructor", 11) && !streq(pkstr, pklen, tag_key, tag_key_len)) { has_proto_props = true; break; } proto_next = loadoff(js, proto_next) & ~(3U | CONSTMASK | ARRMASK); } if (!*first) n += cpy(buf + n, len - n, ",\n", 2); *first = false; n += add_indent(buf + n, len - n, stringify_indent); if (has_proto_props) { n += cpy(buf + n, len - n, "[Prototype]: {\n", 15); stringify_indent++; bool proto_first = true; proto_next = loadoff(js, (jsoff_t) vdata(proto_val)) & ~(3U | CONSTMASK | ARRMASK); while (proto_next < js->brk && proto_next != 0) { jsoff_t pkoff = loadoff(js, proto_next + (jsoff_t) sizeof(proto_next)); jsval_t pval = loadval(js, proto_next + (jsoff_t) (sizeof(proto_next) + sizeof(pkoff))); jsoff_t pklen = offtolen(loadoff(js, pkoff)); const char *pkstr = (const char *) &js->mem[pkoff + sizeof(jsoff_t)]; const char *tag_key2 = get_toStringTag_sym_key(); size_t tag_key_len2 = strlen(tag_key2); if (!streq(pkstr, pklen, "__proto__", 9) && !streq(pkstr, pklen, "constructor", 11) && !streq(pkstr, pklen, tag_key2, tag_key_len2)) { if (!proto_first) n += cpy(buf + n, len - n, ",\n", 2); proto_first = false; n += add_indent(buf + n, len - n, stringify_indent); n += strkey(js, mkval(T_STR, pkoff), buf + n, len - n); n += cpy(buf + n, len - n, ": ", 2); n += tostr(js, pval, buf + n, len - n); } proto_next = loadoff(js, proto_next) & ~(3U | CONSTMASK | ARRMASK); } stringify_indent--; n += cpy(buf + n, len - n, "\n", 1); n += add_indent(buf + n, len - n, stringify_indent); n += cpy(buf + n, len - n, "}", 1); } else { n += cpy(buf + n, len - n, "[Prototype]: {}", 15); } pop_stringify(); return n; } static size_t strobj(struct js *js, jsval_t obj, char *buf, size_t len) { jsoff_t time_off = lkp(js, obj, "__time", 6); if (time_off != 0) return strdate(js, obj, buf, len); int ref = get_circular_ref(obj); if (ref) return ref > 0 ? (size_t) snprintf(buf, len, "[Circular *%d]", ref) : cpy(buf, len, "[Circular]", 10); push_stringify(obj); size_t n = 0; int self_ref = get_self_ref(obj); if (self_ref) { n += (size_t) snprintf(buf + n, len - n, " ", self_ref); } const char *tostring_tag_key = get_toStringTag_sym_key(); jsoff_t tag_off = lkp_proto(js, obj, tostring_tag_key, strlen(tostring_tag_key)); bool is_map = false, is_set = false; jsoff_t tlen = 0, toff = 0; const char *tag_str = NULL; if (tag_off == 0) goto print_plain_object; jsval_t tag_val = resolveprop(js, mkval(T_PROP, tag_off)); if (vtype(tag_val) != T_STR) goto print_plain_object; toff = vstr(js, tag_val, &tlen); tag_str = (const char *) &js->mem[toff]; is_map = (tlen == 3 && memcmp(tag_str, "Map", 3) == 0); is_set = (tlen == 3 && memcmp(tag_str, "Set", 3) == 0); if (is_map) { jsoff_t map_off = lkp(js, obj, "__map", 5); if (map_off == 0) goto print_tagged_object; jsval_t map_val = resolveprop(js, mkval(T_PROP, map_off)); if (vtype(map_val) != T_NUM) goto print_tagged_object; map_entry_t **map_ptr = (map_entry_t**)(size_t)vdata(map_val); n += cpy(buf + n, len - n, "Map(", 4); unsigned int count = 0; if (map_ptr && *map_ptr) count = HASH_COUNT(*map_ptr); n += (size_t) snprintf(buf + n, len - n, "%u", count); n += cpy(buf + n, len - n, ") ", 2); if (count == 0) { n += cpy(buf + n, len - n, "{}", 2); } else { n += cpy(buf + n, len - n, "{\n", 2); stringify_indent++; bool first = true; if (map_ptr && *map_ptr) { map_entry_t *entry, *tmp; HASH_ITER(hh, *map_ptr, entry, tmp) { if (!first) n += cpy(buf + n, len - n, ",\n", 2); first = false; n += add_indent(buf + n, len - n, stringify_indent); size_t key_len = strlen(entry->key); n += cpy(buf + n, len - n, "'", 1); n += cpy(buf + n, len - n, entry->key, key_len); n += cpy(buf + n, len - n, "'", 1); n += cpy(buf + n, len - n, " => ", 4); n += tostr(js, entry->value, buf + n, len - n); } } stringify_indent--; n += cpy(buf + n, len - n, "\n", 1); n += add_indent(buf + n, len - n, stringify_indent); n += cpy(buf + n, len - n, "}", 1); } pop_stringify(); return n; } if (is_set) { jsoff_t set_off = lkp(js, obj, "__set", 5); if (set_off == 0) goto print_tagged_object; jsval_t set_val = resolveprop(js, mkval(T_PROP, set_off)); if (vtype(set_val) != T_NUM) goto print_tagged_object; set_entry_t **set_ptr = (set_entry_t**)(size_t)vdata(set_val); n += cpy(buf + n, len - n, "Set(", 4); unsigned int count = 0; if (set_ptr && *set_ptr) count = HASH_COUNT(*set_ptr); n += (size_t) snprintf(buf + n, len - n, "%u", count); n += cpy(buf + n, len - n, ") ", 2); if (count == 0) { n += cpy(buf + n, len - n, "{}", 2); } else { n += cpy(buf + n, len - n, "{\n", 2); stringify_indent++; bool first = true; if (set_ptr && *set_ptr) { set_entry_t *entry, *tmp; HASH_ITER(hh, *set_ptr, entry, tmp) { if (!first) n += cpy(buf + n, len - n, ",\n", 2); first = false; n += add_indent(buf + n, len - n, stringify_indent); n += tostr(js, entry->value, buf + n, len - n); } } stringify_indent--; n += cpy(buf + n, len - n, "\n", 1); n += add_indent(buf + n, len - n, stringify_indent); n += cpy(buf + n, len - n, "}", 1); } pop_stringify(); return n; } print_tagged_object: n += cpy(buf + n, len - n, "Object [", 8); n += cpy(buf + n, len - n, (const char *) &js->mem[toff], tlen); n += cpy(buf + n, len - n, "] {\n", 4); goto continue_object_print; print_plain_object: n += cpy(buf + n, len - n, "{\n", 2); continue_object_print: stringify_indent++; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); bool first = true; while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; bool is_desc = (klen > 7 && key[0] == '_' && key[1] == '_' && key[2] == 'd' && key[3] == 'e' && key[4] == 's' && key[5] == 'c' && key[6] == '_'); const char *tag_sym_key = get_toStringTag_sym_key(); bool should_hide = streq(key, klen, "__proto__", 9) || streq(key, klen, tag_sym_key, strlen(tag_sym_key)) || is_desc; if (!should_hide) { jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, klen); if (desc) { if (desc->has_getter || desc->has_setter) { should_hide = true; } else if (!desc->enumerable) { should_hide = true; } } } if (!should_hide) { jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); if (!first) n += cpy(buf + n, len - n, ",\n", 2); first = false; n += add_indent(buf + n, len - n, stringify_indent); bool is_special_global = false; if (vtype(val) == T_UNDEF && streq(key, klen, "undefined", 9)) { is_special_global = true; } else if (vtype(val) == T_NUM) { double d = tod(val); if (isinf(d) && d > 0 && streq(key, klen, "Infinity", 8)) { is_special_global = true; } else if (isnan(d) && streq(key, klen, "NaN", 3)) { is_special_global = true; } } if (is_special_global) { n += tostr(js, val, buf + n, len - n); } else { n += strkey(js, mkval(T_STR, koff), buf + n, len - n); n += cpy(buf + n, len - n, ": ", 2); n += tostr(js, val, buf + n, len - n); } } next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; bool is_desc = (klen > 7 && key[0] == '_' && key[1] == '_' && key[2] == 'd' && key[3] == 'e' && key[4] == 's' && key[5] == 'c' && key[6] == '_'); if (is_desc) { jsval_t desc_obj = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); desc_obj = resolveprop(js, desc_obj); if (vtype(desc_obj) == T_OBJ) { jsoff_t get_off = lkp_interned(js, desc_obj, INTERN_GET, 3); jsoff_t set_off = lkp_interned(js, desc_obj, INTERN_SET, 3); bool has_getter = false, has_setter = false; if (get_off != 0) { jsval_t get_val = resolveprop(js, mkval(T_PROP, get_off)); has_getter = (vtype(get_val) == T_FUNC || vtype(get_val) == T_CFUNC); } if (set_off != 0) { jsval_t set_val = resolveprop(js, mkval(T_PROP, set_off)); has_setter = (vtype(set_val) == T_FUNC || vtype(set_val) == T_CFUNC); } if (has_getter || has_setter) { jsoff_t enumerable_off = lkp(js, desc_obj, "enumerable", 10); bool is_enumerable = true; if (enumerable_off != 0) { jsval_t enumerable_val = resolveprop(js, mkval(T_PROP, enumerable_off)); is_enumerable = js_truthy(js, enumerable_val); } if (is_enumerable) { const char *prop_name = key + 7; size_t prop_len = klen - 7; if (!first) n += cpy(buf + n, len - n, ",\n", 2); first = false; n += add_indent(buf + n, len - n, stringify_indent); n += cpy(buf + n, len - n, prop_name, prop_len); n += cpy(buf + n, len - n, ": ", 2); if (has_getter && has_setter) { n += cpy(buf + n, len - n, "[Getter/Setter]", 15); } else if (has_getter) { n += cpy(buf + n, len - n, "[Getter]", 8); } else { n += cpy(buf + n, len - n, "[Setter]", 8); } } } } } next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } stringify_indent--; if (!first) n += cpy(buf + n, len - n, "\n", 1); n += add_indent(buf + n, len - n, stringify_indent); n += cpy(buf + n, len - n, "}", 1); pop_stringify(); return n; } static size_t fix_exponent(char *buf, size_t n) { char *e = strchr(buf, 'e'); if (!e) return n; char *src = e + 1; char *dst = src; if (*src == '+' || *src == '-') { dst++; src++; } while (*src == '0' && src[1] != '\0') src++; if (src != dst) { memmove(dst, src, strlen(src) + 1); return strlen(buf); } return n; } static size_t strnum(jsval_t value, char *buf, size_t len) { double dv = tod(value); if (isnan(dv)) return cpy(buf, len, "NaN", 3); if (isinf(dv)) return cpy(buf, len, dv > 0 ? "Infinity" : "-Infinity", dv > 0 ? 8 : 9); if (dv == 0.0) return cpy(buf, len, "0", 1); char temp[64]; int sign = dv < 0 ? 1 : 0; double adv = sign ? -dv : dv; double iv; double frac = modf(adv, &iv); if (frac == 0.0 && adv < 9007199254740992.0) { return (size_t) snprintf(buf, len, "%.0f", dv); } for (int prec = 1; prec <= 17; prec++) { int n = snprintf(temp, sizeof(temp), "%.*g", prec, dv); double parsed = strtod(temp, NULL); if (parsed == dv) { size_t result = (size_t)snprintf(buf, len, "%s", temp); return fix_exponent(buf, result); } (void)n; } size_t result = (size_t)snprintf(buf, len, "%.17g", dv); return fix_exponent(buf, result); } static jsoff_t vstr(struct js *js, jsval_t value, jsoff_t *len) { jsoff_t off = (jsoff_t) vdata(value); if (len) *len = offtolen(loadoff(js, off)); return (jsoff_t) (off + sizeof(off)); } static size_t strstring(struct js *js, jsval_t value, char *buf, size_t len) { jsoff_t slen, off = vstr(js, value, &slen); const char *str = (const char *) &js->mem[off]; size_t n = 0; n += cpy(buf + n, len - n, "'", 1); for (jsoff_t i = 0; i < slen && n < len - 1; i++) { char c = str[i]; if (c == '\n') { n += cpy(buf + n, len - n, "\\n", 2); } else if (c == '\r') { n += cpy(buf + n, len - n, "\\r", 2); } else if (c == '\t') { n += cpy(buf + n, len - n, "\\t", 2); } else if (c == '\\') { n += cpy(buf + n, len - n, "\\\\", 2); } else if (c == '\'') { n += cpy(buf + n, len - n, "\\'", 2); } else { if (n < len) buf[n++] = c; } } n += cpy(buf + n, len - n, "'", 1); return n; } static bool is_internal_prop(const char *key, jsoff_t klen) { if (klen < 2) return false; if (key[0] != '_' || key[1] != '_') return false; if (klen >= 9 && key[2] == 's' && key[3] == 'y' && key[4] == 'm' && key[5] == '_' && key[klen-1] == '_' && key[klen-2] == '_') return true; return true; } static bool is_hidden_func_prop(const char *key, jsoff_t koff, jsoff_t klen) { if (klen == 4 && memcmp(key, "name", 4) == 0) return true; if (key[0] == '_' && key[1] == '_') return true; const char *interned = get_koff_intern(koff); if (interned) { if (interned == INTERN_PROTOTYPE || interned == INTERN_CONSTRUCTOR) return true; if (interned == get_toStringTag_sym_key()) return true; } return false; } static size_t strfunc_ctor(struct js *js, jsval_t func_obj, char *buf, size_t len) { int ref = get_circular_ref(func_obj); if (ref) return ref > 0 ? (size_t) snprintf(buf, len, "[Circular *%d]", ref) : cpy(buf, len, "[Circular]", 10); push_stringify(func_obj); size_t n = cpy(buf, len, "{\n", 2); stringify_indent++; bool first = true; jsoff_t next = loadoff(js, (jsoff_t) vdata(func_obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *kstr = (const char *) &js->mem[koff + sizeof(jsoff_t)]; if (!is_hidden_func_prop(kstr, koff, klen)) { jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); if (!first) n += cpy(buf + n, len - n, ",\n", 2); first = false; n += add_indent(buf + n, len - n, stringify_indent); n += strkey(js, mkval(T_STR, koff), buf + n, len - n); n += cpy(buf + n, len - n, ": ", 2); n += tostr(js, val, buf + n, len - n); } next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } jsoff_t proto_off = lkp_interned(js, func_obj, INTERN_PROTOTYPE, 9); if (proto_off != 0) { jsval_t proto_val = resolveprop(js, mkval(T_PROP, proto_off)); if (vtype(proto_val) == T_OBJ) n += print_prototype(js, proto_val, buf + n, len - n, &first); } stringify_indent--; if (!first) n += cpy(buf + n, len - n, "\n", 1); n += add_indent(buf + n, len - n, stringify_indent); n += cpy(buf + n, len - n, "}", 1); pop_stringify(); return n; } static size_t strfunc(struct js *js, jsval_t value, char *buf, size_t len) { jsval_t func_obj = mkval(T_OBJ, vdata(value)); jsoff_t code_off = lkp_interned(js, func_obj, INTERN_CODE, 6); jsoff_t name_off = lkp(js, func_obj, "name", 4); const char *name = NULL; jsoff_t name_len = 0; if (name_off != 0) { jsval_t name_val = resolveprop(js, mkval(T_PROP, name_off)); if (vtype(name_val) == T_STR) { name_len = 0; jsoff_t noff = vstr(js, name_val, &name_len); name = (const char *) &js->mem[noff]; } } if (code_off == 0) { jsoff_t native_off = lkp_interned(js, func_obj, INTERN_NATIVE_FUNC, 13); if (native_off != 0) { jsval_t native_val = resolveprop(js, mkval(T_PROP, native_off)); if (vtype(native_val) == T_CFUNC) return strfunc_ctor(js, func_obj, buf, len); } if (name && name_len > 0) { size_t n = cpy(buf, len, "[Function: ", 11); n += cpy(buf + n, len - n, name, name_len); n += cpy(buf + n, len - n, "]", 1); return n; } return cpy(buf, len, "[Function (anonymous)]", 22); } jsval_t code_val = resolveprop(js, mkval(T_PROP, code_off)); if (vtype(code_val) != T_STR) { if (name && name_len > 0) { size_t n = cpy(buf, len, "[Function: ", 11); n += cpy(buf + n, len - n, name, name_len); n += cpy(buf + n, len - n, "]", 1); return n; } return cpy(buf, len, "[Function (anonymous)]", 22); } jsoff_t sn, off = vstr(js, code_val, &sn); if (sn >= 9 && memcmp(&js->mem[off], "__builtin", 9) == 0) { return strfunc_ctor(js, func_obj, buf, len); } if (name && name_len > 0) { size_t n = cpy(buf, len, "[Function: ", 11); n += cpy(buf + n, len - n, name, name_len); n += cpy(buf + n, len - n, "]", 1); return n; } return cpy(buf, len, "[Function (anonymous)]", 22); } static void get_line_col(const char *code, jsoff_t pos, int *line, int *col) { *line = 1; *col = 1; for (jsoff_t i = 0; i < pos && code[i] != '\0'; i++) { if (code[i] == '\n') { (*line)++; *col = 1; } else { (*col)++; } } } static void get_error_line(const char *code, jsoff_t clen, jsoff_t pos, char *buf, size_t bufsize, int *line_start_col) { jsoff_t line_start = pos; while (line_start > 0 && code[line_start - 1] != '\n') { line_start--; } jsoff_t line_end = pos; while (line_end < clen && code[line_end] != '\n' && code[line_end] != '\0') { line_end++; } jsoff_t line_len = line_end - line_start; if (line_len >= bufsize) line_len = bufsize - 1; memcpy(buf, &code[line_start], line_len); buf[line_len] = '\0'; *line_start_col = (int)(pos - line_start) + 1; } static void format_error_stack(struct js *js, size_t *n, int line, int col, bool include_source_line, const char *error_line, int error_col) { if (!js->errmsg) { js->errmsg_size = 4096; js->errmsg = (char *)malloc(js->errmsg_size); if (!js->errmsg) return; } const char *dim = "\x1b[90m"; const char *reset = "\x1b[0m"; size_t remaining; if (include_source_line && error_line && *n < js->errmsg_size) { remaining = js->errmsg_size - *n; *n += (size_t) snprintf(js->errmsg + *n, remaining, "\n%s\n", error_line); if (*n < js->errmsg_size - 1) { remaining = js->errmsg_size - *n; for (int i = 1; i < error_col && remaining > 1; i++) { js->errmsg[(*n)++] = ' '; remaining--; } if (remaining > 1) { js->errmsg[(*n)++] = '^'; } js->errmsg[*n] = '\0'; } } remaining = js->errmsg_size - *n; if (remaining > 20) { const char *file = js->filename ? js->filename : ""; for (int i = global_call_stack.depth - 1; i >= 0 && remaining > 20; i--) { call_frame_t *frame = &global_call_stack.frames[i]; const char *fname = frame->function_name ? frame->function_name : ""; const char *ffile = frame->filename ? frame->filename : ""; if (frame->line < 0 && frame->code) { get_line_col(frame->code, frame->pos, &frame->line, &frame->col); } int fline = frame->line > 0 ? frame->line : 1; int fcol = frame->col > 0 ? frame->col : 1; *n += (size_t) snprintf(js->errmsg + *n, remaining, "\n at %s %s(%s:%d:%d)%s", fname, dim, ffile, fline, fcol, reset); remaining = js->errmsg_size - *n; } if (global_call_stack.depth > 0 && remaining > 60) { *n += (size_t) snprintf(js->errmsg + *n, remaining, "\n at Object. %s(%s:1:1)%s", dim, file, reset); remaining = js->errmsg_size - *n; } if (global_call_stack.depth == 0 && remaining > 20) { *n += (size_t) snprintf(js->errmsg + *n, remaining, "\n at %s%s:%d:%d%s", dim, file, line, col, reset); remaining = js->errmsg_size - *n; } if (remaining > 60 && js->filename && strcmp(js->filename, "[eval]") != 0) { *n += (size_t) snprintf(js->errmsg + *n, remaining, "\n at Module.executeUserEntryPoint [as runMain] %s(ant:internal/modules/run_main:70:5)%s", dim, reset); remaining = js->errmsg_size - *n; } if (remaining > 40 && js->filename && strcmp(js->filename, "[eval]") != 0) { *n += (size_t) snprintf(js->errmsg + *n, remaining, "\n at %sant:internal/main:217:5%s", dim, reset); } } js->errmsg[js->errmsg_size - 1] = '\0'; } static const char *get_error_type_name(js_err_type_t err_type) { switch (err_type) { case JS_ERR_TYPE: return "TypeError"; case JS_ERR_SYNTAX: return "SyntaxError"; case JS_ERR_REFERENCE: return "ReferenceError"; case JS_ERR_RANGE: return "RangeError"; case JS_ERR_EVAL: return "EvalError"; case JS_ERR_URI: return "URIError"; case JS_ERR_INTERNAL: return "InternalError"; case JS_ERR_GENERIC: return "Error"; default: return "Error"; } } jsval_t js_mkerr_typed(struct js *js, js_err_type_t err_type, const char *xx, ...) { va_list ap; int line = 0, col = 0; char error_line[256] = {0}; int error_col = 0; char error_msg[256] = {0}; if (!js->errmsg) { js->errmsg_size = 4096; js->errmsg = (char *)malloc(js->errmsg_size); if (!js->errmsg) return mkval(T_ERR, 0); } get_line_col(js->code, js->toff > 0 ? js->toff : js->pos, &line, &col); get_error_line(js->code, js->clen, js->toff > 0 ? js->toff : js->pos, error_line, sizeof(error_line), &error_col); va_start(ap, xx); vsnprintf(error_msg, sizeof(error_msg), xx, ap); va_end(ap); const char *err_name = get_error_type_name(err_type); size_t err_name_len = strlen(err_name); size_t msg_len = strlen(error_msg); jsval_t err_obj = js_mkobj(js); js_set(js, err_obj, "name", js_mkstr(js, err_name, err_name_len)); js_set(js, err_obj, "message", js_mkstr(js, error_msg, msg_len)); jsval_t proto = js_get_ctor_proto(js, err_name, err_name_len); if (vtype(proto) == T_OBJ) js_set_proto(js, err_obj, proto); js->flags |= F_THROW; js->thrown_value = err_obj; size_t n = 0; if (js->filename) { n = (size_t) snprintf(js->errmsg, js->errmsg_size, "%s:%d\n", js->filename, line); } else { n = (size_t) snprintf(js->errmsg, js->errmsg_size, ":%d\n", line); } size_t remaining = js->errmsg_size - n; if (remaining > 1) { n += (size_t) snprintf(js->errmsg + n, remaining, "\x1b[31m%s\x1b[0m: \x1b[1m%s\x1b[0m", err_name, error_msg); } format_error_stack(js, &n, line, col, true, error_line, error_col); js->pos = js->clen, js->tok = TOK_EOF, js->consumed = 0; return mkval(T_ERR, 0); } jsval_t js_mkerr(struct js *js, const char *xx, ...) { va_list ap; char error_msg[256] = {0}; va_start(ap, xx); vsnprintf(error_msg, sizeof(error_msg), xx, ap); va_end(ap); return js_mkerr_typed(js, JS_ERR_TYPE, "%s", error_msg); } static jsval_t js_throw(struct js *js, jsval_t value) { int line = 0, col = 0; char error_line[256] = {0}; int error_col = 0; get_line_col(js->code, js->toff > 0 ? js->toff : js->pos, &line, &col); get_error_line(js->code, js->clen, js->toff > 0 ? js->toff : js->pos, error_line, sizeof(error_line), &error_col); if (!js->errmsg) { js->errmsg_size = 4096; js->errmsg = (char *)malloc(js->errmsg_size); if (!js->errmsg) return mkval(T_ERR, 0); } size_t n = 0; if (js->filename) { n = (size_t) snprintf(js->errmsg, js->errmsg_size, "%s:%d\n", js->filename, line); } else { n = (size_t) snprintf(js->errmsg, js->errmsg_size, ":%d\n", line); } size_t remaining = js->errmsg_size - n; if (vtype(value) == T_STR) { jsoff_t slen, off = vstr(js, value, &slen); n += (size_t) snprintf(js->errmsg + n, remaining, "\x1b[31mError\x1b[0m: \x1b[1m%.*s\x1b[0m", (int)slen, (char *)&js->mem[off]); } else if (vtype(value) == T_OBJ) { jsoff_t name_off = lkp(js, value, "name", 4); jsoff_t msg_off = lkp(js, value, "message", 7); const char *name_str = NULL; const char *msg_str = NULL; jsoff_t name_len = 0, msg_len = 0; if (name_off > 0) { jsval_t name_val = resolveprop(js, mkval(T_PROP, name_off)); if (vtype(name_val) == T_STR) { jsoff_t off = vstr(js, name_val, &name_len); name_str = (const char *)&js->mem[off]; } } if (msg_off > 0) { jsval_t msg_val = resolveprop(js, mkval(T_PROP, msg_off)); if (vtype(msg_val) == T_STR) { jsoff_t off = vstr(js, msg_val, &msg_len); msg_str = (const char *)&js->mem[off]; } } if (name_str && msg_str) { n += (size_t) snprintf(js->errmsg + n, remaining, "\x1b[31m%.*s\x1b[0m: \x1b[1m%.*s\x1b[0m", (int)name_len, name_str, (int)msg_len, msg_str); } else if (name_str) { n += (size_t) snprintf(js->errmsg + n, remaining, "\x1b[31m%.*s\x1b[0m", (int)name_len, name_str); } else if (msg_str) { n += (size_t) snprintf(js->errmsg + n, remaining, "\x1b[31mError\x1b[0m: \x1b[1m%.*s\x1b[0m", (int)msg_len, msg_str); } else { const char *str = js_str(js, value); n += (size_t) snprintf(js->errmsg + n, remaining, "\x1b[31mError\x1b[0m: \x1b[1m%s\x1b[0m", str); } } else { const char *str = js_str(js, value); n += (size_t) snprintf(js->errmsg + n, remaining, "\x1b[31mError\x1b[0m: \x1b[1m%s\x1b[0m", str); } format_error_stack(js, &n, line, col, true, error_line, error_col); js->flags |= F_THROW; js->thrown_value = value; js->pos = js->clen; js->tok = TOK_EOF; js->consumed = 0; return mkval(T_ERR, 0); } static size_t tostr(struct js *js, jsval_t value, char *buf, size_t len) { switch (vtype(value)) { case T_UNDEF: return cpy(buf, len, "undefined", 9); case T_NULL: return cpy(buf, len, "null", 4); case T_BOOL: return cpy(buf, len, vdata(value) & 1 ? "true" : "false", vdata(value) & 1 ? 4 : 5); case T_ARR: return strarr(js, value, buf, len); case T_OBJ: return strobj(js, value, buf, len); case T_STR: return strstring(js, value, buf, len); case T_NUM: return strnum(value, buf, len); case T_BIGINT: return strbigint(js, value, buf, len); case T_PROMISE: return strpromise(js, value, buf, len); case T_FUNC: return strfunc(js, value, buf, len); case T_CFUNC: return cpy(buf, len, "[Function (native)]", 19); case T_PROP: return (size_t) snprintf(buf, len, "PROP@%lu", (unsigned long) vdata(value)); default: return (size_t) snprintf(buf, len, "VTYPE%d", vtype(value)); } } jsval_t js_tostring_val(struct js *js, jsval_t value) { uint8_t t = vtype(value); char buf[256]; size_t len; switch (t) { case T_STR: return value; case T_UNDEF: return js_mkstr(js, "undefined", 9); case T_NULL: return js_mkstr(js, "null", 4); case T_BOOL: return vdata(value) ? js_mkstr(js, "true", 4) : js_mkstr(js, "false", 5); case T_NUM: len = strnum(value, buf, sizeof(buf)); return js_mkstr(js, buf, len); case T_BIGINT: len = strbigint(js, value, buf, sizeof(buf)); return js_mkstr(js, buf, len); case T_OBJ: case T_ARR: case T_FUNC: return js_call_toString(js, value); default: len = tostr(js, value, buf, sizeof(buf)); return js_mkstr(js, buf, len); } } const char *js_str(struct js *js, jsval_t value) { char *buf = (char *) &js->mem[js->brk + sizeof(jsoff_t)]; size_t len, available = js->size - js->brk - sizeof(jsoff_t); if (is_err(value)) return js->errmsg; if (js->brk + sizeof(jsoff_t) >= js->size) return ""; multiref_count = 0; multiref_next_id = 0; stringify_depth = 0; scan_refs(js, value); stringify_depth = 0; stringify_indent = 0; len = tostr(js, value, buf, available); js_mkstr(js, NULL, len); return buf; } static bool bigint_is_zero(struct js *js, jsval_t v); bool js_truthy(struct js *js, jsval_t v) { uint8_t t = vtype(v); double d; return (t == T_BOOL && vdata(v) != 0) || (t == T_NUM && (d = tod(v), d != 0.0 && !isnan(d))) || (t == T_OBJ || t == T_FUNC || t == T_ARR) || (t == T_STR && vstrlen(js, v) > 0) || (t == T_BIGINT && !bigint_is_zero(js, v)); } static bool js_try_grow_memory(struct js *js, size_t needed) { if (!js->owns_mem) return false; if (js->max_size == 0) return false; size_t new_mem_size = (size_t)js->size * 2; while (new_mem_size < (size_t)js->size + needed && new_mem_size <= (size_t)js->max_size) { new_mem_size *= 2; } if (new_mem_size > (size_t)js->max_size) new_mem_size = (size_t)js->max_size; if (new_mem_size <= (size_t)js->size) return false; uint8_t *new_mem = (uint8_t *)ANT_GC_MALLOC(new_mem_size); if (new_mem == NULL) return false; memcpy(new_mem, js->mem, js->brk); memset(new_mem + js->brk, 0, new_mem_size - js->brk); jsoff_t old_size = js->size; js->mem = new_mem; js->size = (jsoff_t)(new_mem_size / 8U * 8U); if (old_size > 0) { js->gct = (js->size * js->gct) / old_size; } else { js->gct = js->size / 2; } return true; } static jsoff_t js_alloc(struct js *js, size_t size) { size = align32((jsoff_t) size); // jsoff_t ofs = free_list_allocate(size); // if (ofs != (jsoff_t) ~0) return ofs; jsoff_t ofs = js->brk; if (js->brk + size > js->size) { if (js_try_grow_memory(js, size)) { ofs = js->brk; if (js->brk + size > js->size) return ~(jsoff_t) 0; } else { ANT_GC_COLLECT(); // js_gc(js); disabled ofs = js->brk; if (js->brk + size > js->size) { if (js_try_grow_memory(js, size)) { ofs = js->brk; if (js->brk + size > js->size) return ~(jsoff_t) 0; } else { return ~(jsoff_t) 0; } } } } js->brk += (jsoff_t) size; return ofs; } static jsval_t mkentity(struct js *js, jsoff_t b, const void *buf, size_t len) { jsoff_t ofs = js_alloc(js, len + sizeof(b)); if (ofs == (jsoff_t) ~0) return js_mkerr(js, "oom"); memcpy(&js->mem[ofs], &b, sizeof(b)); if (buf != NULL) memmove(&js->mem[ofs + sizeof(b)], buf, len); if ((b & 3) == T_STR) js->mem[ofs + sizeof(b) + len - 1] = 0; return mkval(b & 3, ofs); } jsval_t js_mkstr(struct js *js, const void *ptr, size_t len) { jsoff_t n = (jsoff_t) (len + 1); return mkentity(js, (jsoff_t) ((n << 2) | T_STR), ptr, n); } static jsval_t mkbigint(struct js *js, const char *digits, size_t len, bool negative) { size_t total = len + 2; jsoff_t ofs = js_alloc(js, total + sizeof(jsoff_t)); if (ofs == (jsoff_t) ~0) return js_mkerr(js, "oom"); jsoff_t header = (jsoff_t) (total << 4); memcpy(&js->mem[ofs], &header, sizeof(header)); js->mem[ofs + sizeof(header)] = negative ? 1 : 0; if (digits) memcpy(&js->mem[ofs + sizeof(header) + 1], digits, len); js->mem[ofs + sizeof(header) + 1 + len] = 0; return mkval(T_BIGINT, ofs); } static bool bigint_IsNegative(struct js *js, jsval_t v) { jsoff_t ofs = (jsoff_t) vdata(v); return js->mem[ofs + sizeof(jsoff_t)] == 1; } static const char *bigint_digits(struct js *js, jsval_t v, size_t *len) { jsoff_t ofs = (jsoff_t) vdata(v); jsoff_t header = loadoff(js, ofs); size_t total = (header >> 4) - 2; if (len) *len = total; return (const char *)&js->mem[ofs + sizeof(jsoff_t) + 1]; } static int bigint_cmp_abs(const char *a, size_t alen, const char *b, size_t blen) { while (alen > 1 && a[0] == '0') { a++; alen--; } while (blen > 1 && b[0] == '0') { b++; blen--; } if (alen != blen) return alen > blen ? 1 : -1; for (size_t i = 0; i < alen; i++) { if (a[i] != b[i]) return a[i] > b[i] ? 1 : -1; } return 0; } static char *bigint_add_abs(const char *a, size_t alen, const char *b, size_t blen, size_t *rlen) { size_t maxlen = (alen > blen ? alen : blen) + 1; char *result = (char *)malloc(maxlen + 1); if (!result) return NULL; int carry = 0; size_t ri = 0; for (size_t i = 0; i < maxlen; i++) { int da = (i < alen) ? (a[alen - 1 - i] - '0') : 0; int db = (i < blen) ? (b[blen - 1 - i] - '0') : 0; int sum = da + db + carry; carry = sum / 10; result[ri++] = (char)('0' + (sum % 10)); } while (ri > 1 && result[ri - 1] == '0') ri--; for (size_t i = 0; i < ri / 2; i++) { char tmp = result[i]; result[i] = result[ri - 1 - i]; result[ri - 1 - i] = tmp; } result[ri] = 0; *rlen = ri; return result; } static char *bigint_sub_abs(const char *a, size_t alen, const char *b, size_t blen, size_t *rlen) { char *result = (char *)malloc(alen + 1); if (!result) return NULL; int borrow = 0; size_t ri = 0; for (size_t i = 0; i < alen; i++) { int da = a[alen - 1 - i] - '0'; int db = (i < blen) ? (b[blen - 1 - i] - '0') : 0; int diff = da - db - borrow; if (diff < 0) { diff += 10; borrow = 1; } else { borrow = 0; } result[ri++] = (char)('0' + diff); } while (ri > 1 && result[ri - 1] == '0') ri--; for (size_t i = 0; i < ri / 2; i++) { char tmp = result[i]; result[i] = result[ri - 1 - i]; result[ri - 1 - i] = tmp; } result[ri] = 0; *rlen = ri; return result; } static char *bigint_mul_abs(const char *a, size_t alen, const char *b, size_t blen, size_t *rlen) { size_t reslen = alen + blen; int *temp = (int *)calloc(reslen, sizeof(int)); if (!temp) return NULL; for (size_t i = 0; i < alen; i++) { for (size_t j = 0; j < blen; j++) { temp[i + j] += (a[alen - 1 - i] - '0') * (b[blen - 1 - j] - '0'); } } for (size_t i = 0; i < reslen - 1; i++) { temp[i + 1] += temp[i] / 10; temp[i] %= 10; } size_t start = reslen - 1; while (start > 0 && temp[start] == 0) start--; char *result = (char *)malloc(start + 2); if (!result) { free(temp); return NULL; } for (size_t i = 0; i <= start; i++) result[i] = (char)('0' + temp[start - i]); result[start + 1] = 0; *rlen = start + 1; free(temp); return result; } static char *bigint_div_abs(const char *a, size_t alen, const char *b, size_t blen, size_t *rlen, char **rem, size_t *remlen) { if (blen == 1 && b[0] == '0') return NULL; if (bigint_cmp_abs(a, alen, b, blen) < 0) { char *result = (char *)malloc(2); result[0] = '0'; result[1] = 0; *rlen = 1; if (rem) { *rem = (char *)malloc(alen + 1); memcpy(*rem, a, alen); (*rem)[alen] = 0; *remlen = alen; } return result; } char *current = (char *)calloc(alen + 1, 1); char *result = (char *)calloc(alen + 1, 1); if (!current || !result) { free(current); free(result); return NULL; } size_t curlen = 0, reslen = 0; for (size_t i = 0; i < alen; i++) { if (curlen == 1 && current[0] == '0') curlen = 0; current[curlen++] = a[i]; current[curlen] = 0; int count = 0; while (bigint_cmp_abs(current, curlen, b, blen) >= 0) { size_t sublen; char *sub = bigint_sub_abs(current, curlen, b, blen, &sublen); if (!sub) break; memcpy(current, sub, sublen + 1); curlen = sublen; free(sub); count++; } result[reslen++] = (char)('0' + count); } size_t start = 0; while (start < reslen - 1 && result[start] == '0') start++; memmove(result, result + start, reslen - start + 1); *rlen = reslen - start; if (rem) { *rem = current; *remlen = curlen; } else free(current); return result; } static jsval_t bigint_add(struct js *js, jsval_t a, jsval_t b) { bool aneg = bigint_IsNegative(js, a), bneg = bigint_IsNegative(js, b); size_t alen, blen; const char *ad = bigint_digits(js, a, &alen), *bd = bigint_digits(js, b, &blen); char *result; size_t rlen; bool rneg; if (aneg == bneg) { result = bigint_add_abs(ad, alen, bd, blen, &rlen); rneg = aneg; } else { int cmp = bigint_cmp_abs(ad, alen, bd, blen); if (cmp >= 0) { result = bigint_sub_abs(ad, alen, bd, blen, &rlen); rneg = aneg; } else { result = bigint_sub_abs(bd, blen, ad, alen, &rlen); rneg = bneg; } } if (!result) return js_mkerr(js, "oom"); if (rlen == 1 && result[0] == '0') rneg = false; jsval_t r = mkbigint(js, result, rlen, rneg); free(result); return r; } static jsval_t bigint_sub(struct js *js, jsval_t a, jsval_t b) { bool aneg = bigint_IsNegative(js, a), bneg = bigint_IsNegative(js, b); size_t alen, blen; const char *ad = bigint_digits(js, a, &alen), *bd = bigint_digits(js, b, &blen); char *result; size_t rlen; bool rneg; if (aneg != bneg) { result = bigint_add_abs(ad, alen, bd, blen, &rlen); rneg = aneg; } else { int cmp = bigint_cmp_abs(ad, alen, bd, blen); if (cmp >= 0) { result = bigint_sub_abs(ad, alen, bd, blen, &rlen); rneg = aneg; } else { result = bigint_sub_abs(bd, blen, ad, alen, &rlen); rneg = !aneg; } } if (!result) return js_mkerr(js, "oom"); if (rlen == 1 && result[0] == '0') rneg = false; jsval_t r = mkbigint(js, result, rlen, rneg); free(result); return r; } static jsval_t bigint_mul(struct js *js, jsval_t a, jsval_t b) { bool aneg = bigint_IsNegative(js, a), bneg = bigint_IsNegative(js, b); size_t alen, blen; const char *ad = bigint_digits(js, a, &alen), *bd = bigint_digits(js, b, &blen); size_t rlen; char *result = bigint_mul_abs(ad, alen, bd, blen, &rlen); if (!result) return js_mkerr(js, "oom"); bool rneg = (aneg != bneg) && !(rlen == 1 && result[0] == '0'); jsval_t r = mkbigint(js, result, rlen, rneg); free(result); return r; } static jsval_t bigint_div(struct js *js, jsval_t a, jsval_t b) { bool aneg = bigint_IsNegative(js, a), bneg = bigint_IsNegative(js, b); size_t alen, blen; const char *ad = bigint_digits(js, a, &alen), *bd = bigint_digits(js, b, &blen); if (blen == 1 && bd[0] == '0') return js_mkerr(js, "Division by zero"); size_t rlen; char *result = bigint_div_abs(ad, alen, bd, blen, &rlen, NULL, NULL); if (!result) return js_mkerr(js, "oom"); bool rneg = (aneg != bneg) && !(rlen == 1 && result[0] == '0'); jsval_t r = mkbigint(js, result, rlen, rneg); free(result); return r; } static jsval_t bigint_mod(struct js *js, jsval_t a, jsval_t b) { bool aneg = bigint_IsNegative(js, a); size_t alen, blen; const char *ad = bigint_digits(js, a, &alen), *bd = bigint_digits(js, b, &blen); if (blen == 1 && bd[0] == '0') return js_mkerr(js, "Division by zero"); size_t rlen, remlen; char *rem; char *result = bigint_div_abs(ad, alen, bd, blen, &rlen, &rem, &remlen); if (!result) return js_mkerr(js, "oom"); free(result); bool rneg = aneg && !(remlen == 1 && rem[0] == '0'); jsval_t r = mkbigint(js, rem, remlen, rneg); free(rem); return r; } static jsval_t bigint_neg(struct js *js, jsval_t a) { size_t len; const char *digits = bigint_digits(js, a, &len); bool neg = bigint_IsNegative(js, a); if (len == 1 && digits[0] == '0') return mkbigint(js, digits, len, false); return mkbigint(js, digits, len, !neg); } static jsval_t bigint_exp(struct js *js, jsval_t base, jsval_t exp) { if (bigint_IsNegative(js, exp)) return js_mkerr(js, "Exponent must be positive"); size_t explen; const char *expd = bigint_digits(js, exp, &explen); if (explen == 1 && expd[0] == '0') return mkbigint(js, "1", 1, false); jsval_t result = mkbigint(js, "1", 1, false); jsval_t b = base; jsval_t e = exp; jsval_t two = mkbigint(js, "2", 1, false); while (true) { size_t elen; const char *ed = bigint_digits(js, e, &elen); if (elen == 1 && ed[0] == '0') break; int last_digit = ed[elen - 1] - '0'; if (last_digit % 2 == 1) { result = bigint_mul(js, result, b); if (is_err(result)) return result; } b = bigint_mul(js, b, b); if (is_err(b)) return b; e = bigint_div(js, e, two); if (is_err(e)) return e; } return result; } static int bigint_compare(struct js *js, jsval_t a, jsval_t b) { bool aneg = bigint_IsNegative(js, a), bneg = bigint_IsNegative(js, b); size_t alen, blen; const char *ad = bigint_digits(js, a, &alen), *bd = bigint_digits(js, b, &blen); if (aneg && !bneg) return -1; if (!aneg && bneg) return 1; int cmp = bigint_cmp_abs(ad, alen, bd, blen); return aneg ? -cmp : cmp; } static bool bigint_is_zero(struct js *js, jsval_t v) { size_t len; const char *digits = bigint_digits(js, v, &len); return len == 1 && digits[0] == '0'; } static size_t strbigint(struct js *js, jsval_t value, char *buf, size_t len) { bool neg = bigint_IsNegative(js, value); size_t dlen; const char *digits = bigint_digits(js, value, &dlen); size_t n = 0; if (neg) n += cpy(buf + n, len - n, "-", 1); n += cpy(buf + n, len - n, digits, dlen); return n; } static jsval_t builtin_BigInt(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return mkbigint(js, "0", 1, false); jsval_t arg = args[0]; if (vtype(arg) == T_BIGINT) return arg; if (vtype(arg) == T_NUM) { double d = tod(arg); if (!isfinite(d)) return js_mkerr(js, "Cannot convert Infinity or NaN to BigInt"); if (d != trunc(d)) return js_mkerr(js, "Cannot convert non-integer to BigInt"); bool neg = d < 0; if (neg) d = -d; char buf[64]; snprintf(buf, sizeof(buf), "%.0f", d); return mkbigint(js, buf, strlen(buf), neg); } if (vtype(arg) == T_STR) { jsoff_t slen, off = vstr(js, arg, &slen); const char *str = (const char *)&js->mem[off]; bool neg = false; size_t i = 0; if (slen > 0 && str[0] == '-') { neg = true; i++; } else if (slen > 0 && str[0] == '+') { i++; } while (i < slen && str[i] == '0') i++; if (i >= slen) return mkbigint(js, "0", 1, false); for (size_t j = i; j < slen; j++) { if (!is_digit(str[j])) return js_mkerr(js, "Cannot convert string to BigInt"); } return mkbigint(js, str + i, slen - i, neg); } if (vtype(arg) == T_BOOL) { return mkbigint(js, vdata(arg) ? "1" : "0", 1, false); } return js_mkerr(js, "Cannot convert to BigInt"); } static jsval_t builtin_BigInt_asIntN(struct js *js, jsval_t *args, int nargs) { (void)js; (void)args; (void)nargs; return js_mkerr(js, "BigInt.asIntN not implemented"); } static jsval_t builtin_BigInt_asUintN(struct js *js, jsval_t *args, int nargs) { (void)js; (void)args; (void)nargs; return js_mkerr(js, "BigInt.asUintN not implemented"); } static jsval_t builtin_bigint_toString(struct js *js, jsval_t *args, int nargs) { jsval_t val = js->this_val; if (vtype(val) != T_BIGINT) return js_mkerr(js, "toString called on non-BigInt"); int radix = 10; if (nargs >= 1 && vtype(args[0]) == T_NUM) { radix = (int)tod(args[0]); if (radix < 2 || radix > 36) { return js_mkerr(js, "radix must be between 2 and 36"); } } bool neg = bigint_IsNegative(js, val); size_t dlen; const char *digits = bigint_digits(js, val, &dlen); if (radix == 10) { char buf[1024]; size_t n = 0; if (neg) buf[n++] = '-'; memcpy(buf + n, digits, dlen); n += dlen; return js_mkstr(js, buf, n); } char result[2048]; size_t rpos = sizeof(result) - 1; result[rpos] = '\0'; char *num = (char *)malloc(dlen + 1); if (!num) return js_mkerr(js, "oom"); memcpy(num, digits, dlen); num[dlen] = '\0'; size_t numlen = dlen; while (numlen > 0 && !(numlen == 1 && num[0] == '0')) { int remainder = 0; for (size_t i = 0; i < numlen; i++) { int d = remainder * 10 + (num[i] - '0'); num[i] = '0' + (d / radix); remainder = d % radix; } size_t start = 0; while (start < numlen - 1 && num[start] == '0') start++; memmove(num, num + start, numlen - start + 1); numlen -= start; if (numlen == 1 && num[0] == '0') numlen = 0; rpos--; result[rpos] = remainder < 10 ? '0' + remainder : 'a' + (remainder - 10); } free(num); if (rpos == sizeof(result) - 1) { result[--rpos] = '0'; } if (neg) result[--rpos] = '-'; return js_mkstr(js, result + rpos, sizeof(result) - 1 - rpos); } static jsval_t mkobj(struct js *js, jsoff_t parent) { return mkentity(js, 0 | T_OBJ, &parent, sizeof(parent)); } static jsval_t mkarr(struct js *js) { jsval_t arr = mkobj(js, 0); jsoff_t off = (jsoff_t) vdata(arr); jsoff_t header = loadoff(js, off); saveoff(js, off, header | ARRMASK); jsval_t array_proto = get_ctor_proto(js, "Array", 5); if (vtype(array_proto) == T_OBJ) { set_proto(js, arr, array_proto); } return mkval(T_ARR, vdata(arr)); } jsval_t js_mkarr(struct js *js) { return mkarr(js); } static jsoff_t arr_length(struct js *js, jsval_t arr) { if (vtype(arr) != T_ARR) return 0; jsoff_t max_idx = 0; bool found_length_prop = false; jsoff_t length_prop_val = 0; jsoff_t scan = loadoff(js, (jsoff_t) vdata(arr)) & ~(3U | CONSTMASK | ARRMASK); while (scan < js->brk && scan != 0) { jsoff_t koff = loadoff(js, scan + (jsoff_t) sizeof(scan)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, "length", 6)) { jsval_t val = loadval(js, scan + (jsoff_t) (sizeof(scan) + sizeof(koff))); if (vtype(val) == T_NUM) { found_length_prop = true; length_prop_val = (jsoff_t) tod(val); } } else if (klen > 0 && key[0] >= '0' && key[0] <= '9') { char *endptr; unsigned long idx = strtoul(key, &endptr, 10); if (endptr == key + klen && idx + 1 > max_idx) { max_idx = (jsoff_t)(idx + 1); } } scan = loadoff(js, scan) & ~(3U | CONSTMASK | ARRMASK); } if (found_length_prop) return length_prop_val; return max_idx; } static jsval_t arr_get(struct js *js, jsval_t arr, jsoff_t idx) { if (vtype(arr) != T_ARR) return js_mkundef(); char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsoff_t prop = loadoff(js, (jsoff_t) vdata(arr)) & ~(3U | CONSTMASK | ARRMASK); while (prop < js->brk && prop != 0) { jsoff_t koff = loadoff(js, prop + (jsoff_t) sizeof(prop)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, idxstr, idxlen)) { return loadval(js, prop + (jsoff_t) (sizeof(prop) + sizeof(koff))); } prop = loadoff(js, prop) & ~(3U | CONSTMASK | ARRMASK); } return js_mkundef(); } static bool is_const_prop(struct js *js, jsoff_t propoff) { jsoff_t v = loadoff(js, propoff); return (v & CONSTMASK) != 0; } static inline uint64_t hash_key(const char *key, size_t len) { uint64_t hash = 14695981039346656037ULL; size_t i = 0; for (; i + 8 <= len; i += 8) { uint64_t word; memcpy(&word, key + i, 8); hash ^= word; hash *= 1099511628211ULL; } for (; i < len; i++) { hash ^= (uint8_t)key[i]; hash *= 1099511628211ULL; } return hash; } static const char *intern_string_h(const char *str, size_t len, uint64_t h) { uint32_t bucket = (uint32_t)(h & (INTERN_BUCKETS - 1)); for (interned_string_t *e = intern_buckets[bucket]; e; e = e->next) { if (e->hash == h && e->len == len) { return e->str; } } interned_string_t *entry = (interned_string_t *)malloc(sizeof(interned_string_t)); if (!entry) return NULL; entry->str = (char *)malloc(len + 1); if (!entry->str) { free(entry); return NULL; } memcpy(entry->str, str, len); entry->str[len] = '\0'; entry->len = len; entry->hash = h; entry->next = intern_buckets[bucket]; intern_buckets[bucket] = entry; return entry->str; } typedef struct { const char *str; size_t len; const char *result; uint64_t fingerprint; } intern_cache_entry_t; #define INTERN_CACHE_SIZE 1024 static intern_cache_entry_t intern_cache[INTERN_CACHE_SIZE]; static inline uint64_t make_fingerprint(const char *str, size_t len) { if (len == 0) return 0; uint64_t fp = len; fp |= ((uint64_t)(unsigned char)str[0]) << 8; if (len > 1) fp |= ((uint64_t)(unsigned char)str[1]) << 16; if (len > 2) fp |= ((uint64_t)(unsigned char)str[len - 1]) << 24; if (len > 4) fp |= ((uint64_t)(unsigned char)str[len >> 1]) << 32; if (len > 8) fp |= ((uint64_t)(unsigned char)str[len >> 2]) << 40; if (len > 16) fp |= ((uint64_t)(unsigned char)str[(len >> 1) + (len >> 2)]) << 48; return fp; } static const char *intern_string(const char *str, size_t len) { uint32_t slot = (((uintptr_t)str >> 3) ^ ((uintptr_t)str >> 11)) & (INTERN_CACHE_SIZE - 1); intern_cache_entry_t *e = &intern_cache[slot]; if (e->str == str && e->len == len) { uint64_t fp = make_fingerprint(str, len); if (e->fingerprint == fp) return e->result; } const char *result = intern_string_h(str, len, hash_key(str, len)); e->str = str; e->len = len; e->result = result; e->fingerprint = make_fingerprint(str, len); return result; } static void intern_init(void) { if (INTERN_PROTO) return; INTERN_PROTO = intern_string("__proto__", 9); INTERN_LENGTH = intern_string("length", 6); INTERN_PROTOTYPE = intern_string("prototype", 9); INTERN_CONSTRUCTOR = intern_string("constructor", 11); INTERN_NAME = intern_string("name", 4); INTERN_MESSAGE = intern_string("message", 7); INTERN_VALUE = intern_string("value", 5); INTERN_GET = intern_string("get", 3); INTERN_SET = intern_string("set", 3); INTERN_CODE = intern_string("__code", 6); INTERN_SCOPE = intern_string("__scope", 7); INTERN_THIS = intern_string("__this", 6); INTERN_NATIVE_FUNC = intern_string("__native_func", 13); INTERN_ASYNC = intern_string("__async", 7); INTERN_BOUND_THIS = intern_string("__bound_this", 12); INTERN_BOUND_ARGS = intern_string("__bound_args", 12); INTERN_TARGET_FUNC = intern_string("__target_func", 13); INTERN_ARGUMENTS = intern_string("arguments", 9); INTERN_CALLEE = intern_string("callee", 6); INTERN_IDX[0] = intern_string("0", 1); INTERN_IDX[1] = intern_string("1", 1); INTERN_IDX[2] = intern_string("2", 1); INTERN_IDX[3] = intern_string("3", 1); INTERN_IDX[4] = intern_string("4", 1); INTERN_IDX[5] = intern_string("5", 1); INTERN_IDX[6] = intern_string("6", 1); INTERN_IDX[7] = intern_string("7", 1); INTERN_IDX[8] = intern_string("8", 1); INTERN_IDX[9] = intern_string("9", 1); } static inline uint32_t koff_hash(jsoff_t koff) { return (koff >> 2) & (KOFF_BUCKETS - 1); } #define KOFF_CACHE_SIZE 2048 typedef struct { jsoff_t koff; const char *interned; } koff_cache_entry_t; static koff_cache_entry_t koff_cache[KOFF_CACHE_SIZE]; static inline const char *get_koff_intern(jsoff_t koff) { uint32_t slot = (koff >> 2) & (KOFF_CACHE_SIZE - 1); if (koff_cache[slot].koff == koff) { return koff_cache[slot].interned; } uint32_t bucket = koff_hash(koff); for (koff_intern_t *e = koff_buckets[bucket]; e; e = e->next) { if (e->koff == koff) { koff_cache[slot].koff = koff; koff_cache[slot].interned = e->interned; return e->interned; } } return NULL; } static inline void set_koff_intern(jsoff_t koff, const char *interned) { uint32_t bucket = koff_hash(koff); for (koff_intern_t *e = koff_buckets[bucket]; e; e = e->next) { if (e->koff == koff) return; } koff_intern_t *entry = (koff_intern_t *)malloc(sizeof(koff_intern_t)); if (!entry) return; entry->koff = koff; entry->interned = interned; entry->next = koff_buckets[bucket]; koff_buckets[bucket] = entry; uint32_t slot = (koff >> 2) & (KOFF_CACHE_SIZE - 1); koff_cache[slot].koff = koff; koff_cache[slot].interned = interned; } static inline uint64_t make_cache_key(jsoff_t obj_offset, uint32_t str_hash) { return ((uint64_t)obj_offset << 32) | str_hash; } static void fast_cache_property(jsoff_t obj_offset, const char *key, size_t key_len, jsoff_t prop_offset) { if (key_len > 63) return; uint64_t str_hash = hash_key(key, key_len); uint64_t combined = make_cache_key(obj_offset, (uint32_t)str_hash); fast_prop_cache_t *entry = NULL; HASH_FIND(hh, fast_cache, &combined, sizeof(uint64_t), entry); if (!entry) { entry = (fast_prop_cache_t *)malloc(sizeof(fast_prop_cache_t)); if (!entry) return; entry->combined_key = combined; HASH_ADD(hh, fast_cache, combined_key, sizeof(uint64_t), entry); } entry->prop_offset = prop_offset; } static jsoff_t fast_cache_lookup(jsoff_t obj_offset, const char *key, size_t key_len) { if (key_len > 63) return 0; uint64_t str_hash = hash_key(key, key_len); uint64_t combined = make_cache_key(obj_offset, (uint32_t)str_hash); fast_prop_cache_t *entry = NULL; HASH_FIND(hh, fast_cache, &combined, sizeof(uint64_t), entry); if (entry) return entry->prop_offset; return 0; } static void invalidate_obj_cache(jsoff_t obj_offset) { fast_prop_cache_t *entry, *tmp; HASH_ITER(hh, fast_cache, entry, tmp) { if ((entry->combined_key >> 32) == obj_offset) { HASH_DEL(fast_cache, entry); free(entry); } } } static void invalidate_prop_cache_for_obj(jsoff_t obj_offset) { for (uint32_t i = 0; i < INTERN_PROP_CACHE_SIZE; i++) { if (intern_prop_cache[i].obj_off == obj_offset) { intern_prop_cache[i].obj_off = 0; intern_prop_cache[i].intern_ptr = NULL; intern_prop_cache[i].prop_off = 0; } } } static jsval_t mkprop(struct js *js, jsval_t obj, jsval_t k, jsval_t v, bool is_const) { jsoff_t koff = (jsoff_t) vdata(k); jsoff_t b, head = (jsoff_t) vdata(obj); char buf[sizeof(koff) + sizeof(v)]; memcpy(&b, &js->mem[head], sizeof(b)); memcpy(buf, &koff, sizeof(koff)); memcpy(buf + sizeof(koff), &v, sizeof(v)); jsoff_t brk = js->brk | T_OBJ; if (b & ARRMASK) brk |= ARRMASK; memcpy(&js->mem[head], &brk, sizeof(brk)); invalidate_obj_cache(head); jsoff_t klen = (loadoff(js, koff) >> 2) - 1; const char *p = (char *) &js->mem[koff + sizeof(koff)]; const char *interned = intern_string(p, klen); if (interned) set_koff_intern(koff, interned); jsoff_t prop_header = (b & ~(3U | CONSTMASK | ARRMASK)) | T_PROP; if (is_const) prop_header |= CONSTMASK; return mkentity(js, prop_header, buf, sizeof(buf)); } static jsval_t setup_func_prototype(struct js *js, jsval_t func) { jsval_t proto_obj = mkobj(js, 0); if (is_err(proto_obj)) return proto_obj; jsval_t object_proto = get_ctor_proto(js, "Object", 6); if (vtype(object_proto) == T_OBJ) { set_proto(js, proto_obj, object_proto); } jsval_t constructor_key = js_mkstr(js, "constructor", 11); if (is_err(constructor_key)) return constructor_key; jsval_t res = mkprop(js, proto_obj, constructor_key, func, false); if (is_err(res)) return res; js_set_descriptor(js, proto_obj, "constructor", 11, JS_DESC_W | JS_DESC_C); jsval_t prototype_key = js_mkstr(js, "prototype", 9); if (is_err(prototype_key)) return prototype_key; res = setprop(js, func, prototype_key, proto_obj); if (is_err(res)) return res; js_set_descriptor(js, func, "prototype", 9, JS_DESC_W); return js_mkundef(); } static jsval_t validate_array_length(struct js *js, jsval_t v) { if (vtype(v) != T_NUM) { return js_mkerr_typed(js, JS_ERR_RANGE, "Invalid array length"); } double d = tod(v); if (d < 0 || d != (uint32_t)d || d >= 4294967296.0) { return js_mkerr_typed(js, JS_ERR_RANGE, "Invalid array length"); } return js_mkundef(); } jsval_t js_setprop(struct js *js, jsval_t obj, jsval_t k, jsval_t v) { jsoff_t koff = (jsoff_t) vdata(k); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(jsoff_t)]; if (streq(key, klen, "__proto__", 9)) { return js_mkerr(js, "cannot assign to __proto__"); } if (vtype(obj) == T_ARR && streq(key, klen, "length", 6)) { jsval_t err = validate_array_length(js, v); if (is_err(err)) return err; } if (is_proxy(js, obj)) { jsval_t result = proxy_set(js, obj, key, klen, v); if (is_err(result)) return result; return v; } if (try_dynamic_setter(js, obj, key, klen, v)) { return v; } jsoff_t existing = lkp(js, obj, key, klen); { jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, klen); if (!desc) goto no_descriptor; if (desc->has_setter) { jsval_t setter = desc->setter; uint8_t setter_type = vtype(setter); if (setter_type == T_FUNC || setter_type == T_CFUNC) { js_parse_state_t saved; JS_SAVE_STATE(js, saved); uint8_t saved_flags = js->flags; jsoff_t saved_toff = js->toff; jsoff_t saved_tlen = js->tlen; jsval_t saved_this = js->this_val; js->this_val = obj; push_this(obj); jsval_t result = call_js_with_args(js, setter, &v, 1); pop_this(); js->this_val = saved_this; JS_RESTORE_STATE(js, saved); js->flags = saved_flags; js->toff = saved_toff; js->tlen = saved_tlen; if (is_err(result)) return result; return v; } } if (desc->has_getter && !desc->has_setter) { if (js->flags & F_STRICT) return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot set property which has only a getter"); return v; } if (existing <= 0) goto no_descriptor; if (!desc->writable) { if (js->flags & F_STRICT) return js_mkerr(js, "assignment to read-only property"); return mkval(T_PROP, existing); } } no_descriptor: if (existing <= 0) goto create_new; if (is_const_prop(js, existing)) { if (js->flags & F_STRICT) return js_mkerr(js, "assignment to constant"); return mkval(T_PROP, existing); } saveval(js, existing + sizeof(jsoff_t) * 2, v); if (vtype(obj) != T_ARR || klen == 0 || key[0] < '0' || key[0] > '9') goto done_update; char *endptr; unsigned long update_idx = strtoul(key, &endptr, 10); if (endptr != key + klen) goto done_update; jsoff_t len_off = lkp_interned(js, obj, INTERN_LENGTH, 6); jsoff_t cur_len = 0; if (len_off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) == T_NUM) cur_len = (jsoff_t) tod(len_val); } if (update_idx < cur_len) goto done_update; jsval_t len_key = js_mkstr(js, "length", 6); jsval_t new_len = tov((double)(update_idx + 1)); if (len_off != 0) saveval(js, len_off + sizeof(jsoff_t) * 2, new_len); else mkprop(js, obj, len_key, new_len, false); done_update: return mkval(T_PROP, existing); create_new: jsoff_t frozen_off = lkp(js, obj, "__frozen__", 10); if (frozen_off != 0) { jsval_t frozen_val = resolveprop(js, mkval(T_PROP, frozen_off)); if (js_truthy(js, frozen_val)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot add property to frozen object"); return js_mkundef(); } } jsoff_t sealed_off = lkp(js, obj, "__sealed__", 10); if (sealed_off != 0) { jsval_t sealed_val = resolveprop(js, mkval(T_PROP, sealed_off)); if (js_truthy(js, sealed_val)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot add property to sealed object"); return js_mkundef(); } } jsoff_t ext_off = lkp(js, obj, "__extensible__", 14); if (ext_off != 0) { jsval_t ext_val = resolveprop(js, mkval(T_PROP, ext_off)); if (!js_truthy(js, ext_val)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot add property to non-extensible object"); return js_mkundef(); } } int need_length_update = 0; unsigned long idx = 0; if (vtype(obj) == T_ARR && klen > 0 && key[0] >= '0' && key[0] <= '9') { char *endptr; idx = strtoul(key, &endptr, 10); if (endptr == key + klen) { jsoff_t len_off = lkp_interned(js, obj, INTERN_LENGTH, 6); jsoff_t cur_len = 0; if (len_off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) == T_NUM) cur_len = (jsoff_t) tod(len_val); } if (idx >= cur_len) need_length_update = 1; } } jsval_t result = mkprop(js, obj, k, v, false); if (need_length_update) { jsoff_t len_off = lkp_interned(js, obj, INTERN_LENGTH, 6); jsval_t len_key = js_mkstr(js, "length", 6); jsval_t new_len = tov((double)(idx + 1)); if (len_off != 0) { saveval(js, len_off + sizeof(jsoff_t) * 2, new_len); } else mkprop(js, obj, len_key, new_len, false); } return result; } static jsval_t setprop(struct js *js, jsval_t obj, jsval_t k, jsval_t v) { return js_setprop(js, obj, k, v); } static jsval_t setprop_const(struct js *js, jsval_t obj, const char *key, size_t len, jsval_t v) { jsval_t k = js_mkstr(js, key, len); if (is_err(k)) return k; return mkprop(js, obj, k, v, true); } static inline jsval_t setprop_fast(struct js *js, jsval_t obj, const char *key, size_t len, jsval_t v) { jsval_t k = js_mkstr(js, key, len); if (is_err(k)) return k; return mkprop(js, obj, k, v, false); } static jsval_t setprop_interned(struct js *js, jsval_t obj, const char *key, size_t len, jsval_t v) { jsval_t k = js_mkstr(js, key, len); if (is_err(k)) return k; return js_setprop(js, obj, k, v); } static jsval_t setprop_nonconfigurable(struct js *js, jsval_t obj, const char *key, size_t keylen, jsval_t v) { jsval_t k = js_mkstr(js, key, keylen); if (is_err(k)) return k; jsval_t result = setprop(js, obj, k, v); if (is_err(result)) return result; js_set_descriptor(js, obj, key, keylen, JS_DESC_W); return result; } jsval_t js_mksym(struct js *js, const char *desc) { uint64_t id = ++js->symbol_counter; jsoff_t desc_off = 0; if (desc && *desc) { jsval_t desc_str = js_mkstr(js, desc, strlen(desc)); desc_off = (jsoff_t)vdata(desc_str); } uint64_t payload = ((id & PROPREF_PAYLOAD) << 24) | (desc_off & PROPREF_PAYLOAD); return mkval(T_SYMBOL, payload); } static bool is_symbol(struct js *js, jsval_t v) { (void)js; return vtype(v) == T_SYMBOL; } static uint64_t sym_get_id(jsval_t v) { return (vdata(v) >> 24) & PROPREF_PAYLOAD; } static jsoff_t sym_get_desc_off(jsval_t v) { return vdata(v) & PROPREF_PAYLOAD; } static const char *sym_get_desc(struct js *js, jsval_t v) { jsoff_t off = sym_get_desc_off(v); if (off == 0) return NULL; return (const char *)&js->mem[off + sizeof(jsoff_t)]; } uint64_t js_sym_id(jsval_t sym) { return sym_get_id(sym); } jsval_t js_mksym_for(struct js *js, const char *key) { (void)js; const char *interned = intern_string(key, strlen(key)); uint64_t id = (uint64_t)(uintptr_t)interned; return mkval(T_SYMBOL, id | (1ULL << 47)); } const char *js_sym_key(jsval_t sym) { if (vtype(sym) != T_SYMBOL) return NULL; uint64_t data = vdata(sym); if (!(data & (1ULL << 47))) return NULL; return (const char *)(uintptr_t)(data & ~(1ULL << 47)); } const char *js_sym_desc(struct js *js, jsval_t sym) { return sym_get_desc(js, sym); } static inline jsoff_t esize(jsoff_t w) { jsoff_t cleaned = w & ~(GCMASK | CONSTMASK); switch (cleaned & 3U) { case T_OBJ: return (jsoff_t) (sizeof(jsoff_t) + sizeof(jsoff_t)); case T_PROP: return (jsoff_t) (sizeof(jsoff_t) + sizeof(jsoff_t) + sizeof(jsval_t)); case T_STR: return (jsoff_t) (sizeof(jsoff_t) + align32(cleaned >> 2U)); default: return (jsoff_t) ~0U; } } static bool is_mem_entity(uint8_t t) { return t == T_OBJ || t == T_PROP || t == T_STR || t == T_FUNC || t == T_ARR || t == T_PROMISE; } static void js_mark_all_entities_for_deletion(struct js *js) { for (jsoff_t v, off = 0; off < js->brk; off += esize(v & ~(GCMASK | CONSTMASK))) { v = loadoff(js, off); saveoff(js, off, v | GCMASK); } } static jsoff_t js_unmark_entity(struct js *js, jsoff_t off) { if (off >= js->brk) return 0; jsoff_t v = loadoff(js, off); if (v & GCMASK) { saveoff(js, off, v & ~GCMASK); jsoff_t cleaned = v & ~(GCMASK | CONSTMASK); if ((cleaned & 3) == T_OBJ) js_unmark_entity(js, cleaned & ~3); if ((cleaned & 3) == T_PROP) { js_unmark_entity(js, cleaned & ~3); js_unmark_entity(js, loadoff(js, (jsoff_t) (off + sizeof(off)))); jsval_t val = loadval(js, (jsoff_t) (off + sizeof(off) + sizeof(off))); if (is_mem_entity(vtype(val))) js_unmark_entity(js, (jsoff_t) vdata(val)); } } return v & ~(GCMASK | CONSTMASK | 3U); } static void js_unmark_jsval(struct js *js, jsval_t v) { if (is_mem_entity(vtype(v))) js_unmark_entity(js, (jsoff_t) vdata(v)); } static void js_unmark_used_entities(struct js *js) { js_unmark_entity(js, (jsoff_t) vdata(js->scope)); if (global_scope_stack) { jsoff_t *p = NULL; while ((p = (jsoff_t *)utarray_next(global_scope_stack, p)) != NULL) { js_unmark_entity(js, *p); } } js_unmark_entity(js, 0); if (js->nogc) js_unmark_entity(js, js->nogc); mco_coro *running = mco_running(); if (running) { async_exec_context_t *ctx = (async_exec_context_t *)mco_get_user_data(running); if (ctx) { js_unmark_jsval(js, ctx->closure_scope); js_unmark_jsval(js, ctx->result); js_unmark_jsval(js, ctx->promise); if (ctx->coro) { js_unmark_jsval(js, ctx->coro->scope); js_unmark_jsval(js, ctx->coro->this_val); js_unmark_jsval(js, ctx->coro->awaited_promise); js_unmark_jsval(js, ctx->coro->result); js_unmark_jsval(js, ctx->coro->async_func); js_unmark_jsval(js, ctx->coro->yield_value); for (int i = 0; i < ctx->coro->nargs; i++) js_unmark_jsval(js, ctx->coro->args[i]); } } } for (coroutine_t *coro = pending_coroutines.head; coro != NULL; coro = coro->next) { js_unmark_jsval(js, coro->scope); js_unmark_jsval(js, coro->this_val); js_unmark_jsval(js, coro->awaited_promise); js_unmark_jsval(js, coro->result); js_unmark_jsval(js, coro->async_func); js_unmark_jsval(js, coro->yield_value); for (int i = 0; i < coro->nargs; i++) js_unmark_jsval(js, coro->args[i]); } for (int i = 0; i < global_this_stack.depth; i++) { js_unmark_jsval(js, global_this_stack.stack[i]); } } static void init_free_list(void) { if (global_free_list == NULL) { utarray_new(global_free_list, &free_list_icd); } else { utarray_clear(global_free_list); } } static void free_list_clear(void) { if (global_free_list != NULL) utarray_clear(global_free_list); } static void free_list_compact(void) { unsigned int len = utarray_len(global_free_list); if (len <= 1) return; FreeListEntry *entries = (FreeListEntry *)utarray_front(global_free_list); for (unsigned int i = 0; i < len - 1; i++) { for (unsigned int j = 0; j < len - i - 1; j++) { if (entries[j].offset > entries[j + 1].offset) { FreeListEntry temp = entries[j]; entries[j] = entries[j + 1]; entries[j + 1] = temp; } } } unsigned int write_pos = 0; for (unsigned int i = 1; i < len; i++) { if (entries[write_pos].offset + entries[write_pos].size == entries[i].offset) { entries[write_pos].size += entries[i].size; } else { write_pos++; entries[write_pos] = entries[i]; } } unsigned int final_count = write_pos + 1; while (utarray_len(global_free_list) > final_count) { utarray_pop_back(global_free_list); } } static jsoff_t free_list_zero_out(struct js *js) { unsigned int len = utarray_len(global_free_list); if (len == 0) return 0; jsoff_t safe_threshold = protected_brk > 0 ? protected_brk + 0x400 : 0x1000; jsoff_t total_freed = 0; FreeListEntry *entries = (FreeListEntry *)utarray_front(global_free_list); for (unsigned int i = 0; i < len; i++) { if (entries[i].offset > 0 && entries[i].size > 0) { if (entries[i].offset < safe_threshold) continue; if (entries[i].offset + entries[i].size > js->size) continue; // ugh disable zeroing for now until a better solution is found // memset(&js->mem[entries[i].offset], 0, entries[i].size); total_freed += entries[i].size; } } return total_freed; } static jsoff_t free_list_allocate(size_t size) { unsigned int len = utarray_len(global_free_list); if (len == 0) return ~(jsoff_t) 0; size = align32((jsoff_t) size); FreeListEntry *entries = (FreeListEntry *)utarray_front(global_free_list); jsoff_t safe_reuse_threshold = protected_brk > 0 ? protected_brk + 0x400 : 0x1000; for (unsigned int i = 0; i < len; i++) { if (entries[i].offset >= safe_reuse_threshold && entries[i].size >= size) { jsoff_t allocated_offset = entries[i].offset; entries[i].offset += size; entries[i].size -= size; if (entries[i].size == 0) utarray_erase(global_free_list, i, 1); return allocated_offset; } } return ~(jsoff_t) 0; } static bool is_builtin_or_system(jsoff_t offset, struct js *js) { jsval_t obj_val = mkval(T_OBJ, offset); jsoff_t native_off = lkp_interned(js, obj_val, INTERN_NATIVE_FUNC, 13); if (native_off != 0) return true; jsoff_t code_off = lkp_interned(js, obj_val, INTERN_CODE, 6); if (code_off != 0) { jsval_t code_val = resolveprop(js, mkval(T_PROP, code_off)); if (vtype(code_val) == T_STR) { jsoff_t slen, str_off = vstr(js, code_val, &slen); if (slen > 10 && memcmp(&js->mem[str_off], "__builtin_", 10) == 0) return true; } } return false; } static void free_list_add(jsoff_t offset, jsoff_t size, struct js *js) { if (offset >= js->size || size == 0 || offset + size > js->size * 2) return; jsoff_t safe_threshold = protected_brk > 0 ? protected_brk + 0x400 : 0x1000; if (offset < safe_threshold) return; jsoff_t entity_val = loadoff(js, offset); uint8_t entity_type = entity_val & 3; if (entity_type == T_OBJ && is_builtin_or_system(offset, js)) return; if (entity_type == T_STR && offset < 0x1000) return; FreeListEntry entry = {0}; entry.offset = offset; entry.size = size; entry.type = entity_type; entry.detail[0] = '\0'; utarray_push_back(global_free_list, &entry); } static void js_fixup_offsets(struct js *js, jsoff_t start, jsoff_t size) { for (jsoff_t n, v, off = 0; off < js->brk; off += n) { v = loadoff(js, off); n = esize(v & ~(GCMASK | CONSTMASK)); if (v & GCMASK) continue; jsoff_t flags = v & (GCMASK | CONSTMASK); jsoff_t cleaned = v & ~(GCMASK | CONSTMASK); if ((cleaned & 3) != T_OBJ && (cleaned & 3) != T_PROP) continue; jsoff_t adjusted = cleaned > start ? cleaned - size : cleaned; if (cleaned != adjusted) saveoff(js, off, adjusted | flags); if ((cleaned & 3) == T_OBJ) { jsoff_t u = loadoff(js, (jsoff_t) (off + sizeof(jsoff_t))); if (u > start) saveoff(js, (jsoff_t) (off + sizeof(jsoff_t)), u - size); } #define FIXUP_JSVAL(val) do { \ if (is_mem_entity(vtype(val)) && vdata(val) > start) \ (val) = mkval(vtype(val), vdata(val) - size); \ } while (0) #define FIXUP_JSVAL_AT(mem_off) do { \ jsval_t _v = loadval(js, mem_off); \ if (is_mem_entity(vtype(_v)) && vdata(_v) > start) \ saveval(js, mem_off, mkval(vtype(_v), vdata(_v) - size)); \ } while (0) #define FIXUP_OFF(off_var) do { if ((off_var) > start) (off_var) -= size; } while (0) if ((cleaned & 3) == T_PROP) { jsoff_t koff = loadoff(js, (jsoff_t) (off + sizeof(off))); if (koff > start) saveoff(js, (jsoff_t) (off + sizeof(off)), koff - size); FIXUP_JSVAL_AT((jsoff_t) (off + sizeof(off) + sizeof(off))); } } FIXUP_JSVAL(js->scope); FIXUP_OFF(js->nogc); if (js->code > (char *) js->mem && js->code - (char *) js->mem < js->size && js->code - (char *) js->mem > start) { js->code -= size; } if (global_scope_stack) { jsoff_t *p = NULL; while ((p = (jsoff_t *)utarray_next(global_scope_stack, p)) != NULL) FIXUP_OFF(*p); } for (coroutine_t *coro = pending_coroutines.head; coro != NULL; coro = coro->next) { FIXUP_JSVAL(coro->scope); FIXUP_JSVAL(coro->this_val); FIXUP_JSVAL(coro->awaited_promise); FIXUP_JSVAL(coro->result); FIXUP_JSVAL(coro->async_func); FIXUP_JSVAL(coro->yield_value); for (int i = 0; i < coro->nargs; i++) FIXUP_JSVAL(coro->args[i]); } #undef FIXUP_JSVAL #undef FIXUP_JSVAL_AT #undef FIXUP_OFF } static void js_compact_from_end(struct js *js) { jsoff_t new_brk = js->brk; jsoff_t min_brk = (jsoff_t) vdata(js->scope) + 8; if (global_scope_stack) { jsoff_t *p = NULL; while ((p = (jsoff_t *)utarray_next(global_scope_stack, p)) != NULL) { if (*p + 8 > min_brk) min_brk = *p + 8; } } for (jsoff_t off = 0; off < js->brk; off += esize(loadoff(js, off) & ~(GCMASK | CONSTMASK))) { jsoff_t v = loadoff(js, off); if ((v & GCMASK) == 0) new_brk = off + esize(v & ~(GCMASK | CONSTMASK)); } if (new_brk < min_brk) new_brk = min_brk; js->brk = new_brk; } static void js_clear_gc_marks(struct js *js) { for (jsoff_t v, off = 0; off < js->brk; off += esize(v & ~(GCMASK | CONSTMASK))) { v = loadoff(js, off); if (v & GCMASK) { jsoff_t size = esize(v & ~(GCMASK | CONSTMASK)); free_list_add(off, size, js); saveoff(js, off, v & ~GCMASK); } } } jsoff_t js_gc(struct js *js) { // setlwm(js); // if (js->nogc == (jsoff_t) ~0) return 0; // // js_mark_all_entities_for_deletion(js); // js_unmark_used_entities(js); // js_compact_from_end(js); // // js_clear_gc_marks(js); // free_list_compact(); // // jsoff_t freed = free_list_zero_out(js); // if (global_free_list != NULL) utarray_clear(global_free_list); // // return freed; return 0; } static int is_unicode_space(const unsigned char *p, jsoff_t remaining, bool *is_line_term) { if (is_line_term) *is_line_term = false; if (p[0] < 0x80) return 0; if (remaining >= 2 && p[0] == 0xC2 && p[1] == 0xA0) return 2; if (remaining >= 3 && p[0] == 0xE2 && p[1] == 0x80) { if (p[2] >= 0x80 && p[2] <= 0x8A) return 3; if (p[2] == 0xAF) return 3; if (p[2] == 0xA8) { if (is_line_term) *is_line_term = true; return 3; } if (p[2] == 0xA9) { if (is_line_term) *is_line_term = true; return 3; } } if (remaining >= 3 && p[0] == 0xE1 && p[1] == 0x9A && p[2] == 0x80) return 3; if (remaining >= 3 && p[0] == 0xE2 && p[1] == 0x81 && p[2] == 0x9F) return 3; if (remaining >= 3 && p[0] == 0xE3 && p[1] == 0x80 && p[2] == 0x80) return 3; if (remaining >= 3 && p[0] == 0xEF && p[1] == 0xBB && p[2] == 0xBF) return 3; return 0; } static jsoff_t skiptonext(const char *code, jsoff_t len, jsoff_t n, bool *had_newline) { if (had_newline) *had_newline = false; while (n < len) { unsigned char c = (unsigned char)code[n]; if (c <= 0x7F) { if (c == ' ' || c == '\t' || c == '\r' || c == '\f' || c == '\v') { n++; } else if (c == '\n') { if (had_newline) *had_newline = true; n++; } else if (c == '/' && n + 1 < len) { if (code[n + 1] == '/') { for (n += 2; n < len && code[n] != '\n';) n++; if (had_newline && n < len && code[n] == '\n') *had_newline = true; } else if (code[n + 1] == '*' && n + 3 < len) { for (n += 4; n < len && (code[n - 2] != '*' || code[n - 1] != '/');) { if (had_newline && code[n] == '\n') *had_newline = true; n++; } } else { break; } } else { break; } } else { bool is_line_term = false; int ulen = is_unicode_space((const unsigned char *)&code[n], len - n, &is_line_term); if (ulen > 0) { if (had_newline && is_line_term) *had_newline = true; n += ulen; } else { break; } } } return n; } static bool streq(const char *buf, size_t len, const char *p, size_t n) { return n == len && memcmp(buf, p, len) == 0; } static bool is_strict_reserved(const char *buf, size_t len) { switch (len) { case 3: return streq(buf, len, "let", 3); case 5: return streq(buf, len, "yield", 5); case 6: return streq(buf, len, "static", 6) || streq(buf, len, "public", 6); case 7: return streq(buf, len, "private", 7) || streq(buf, len, "package", 7); case 9: return streq(buf, len, "interface", 9) || streq(buf, len, "protected", 9); case 10: return streq(buf, len, "implements", 10); default: return false; } } static bool is_strict_restricted(const char *buf, size_t len) { return (len == 4 && streq(buf, len, "eval", 4)) || (len == 9 && streq(buf, len, "arguments", 9)); } static uint8_t parsekeyword(const char *buf, size_t len) { switch (buf[0]) { case 'a': if (streq("async", 5, buf, len)) return TOK_ASYNC; if (streq("await", 5, buf, len)) return TOK_AWAIT; if (streq("as", 2, buf, len)) return TOK_AS; break; case 'b': if (streq("break", 5, buf, len)) return TOK_BREAK; break; case 'c': if (streq("class", 5, buf, len)) return TOK_CLASS; if (streq("case", 4, buf, len)) return TOK_CASE; if (streq("catch", 5, buf, len)) return TOK_CATCH; if (streq("const", 5, buf, len)) return TOK_CONST; if (streq("continue", 8, buf, len)) return TOK_CONTINUE; break; case 'd': if (streq("do", 2, buf, len)) return TOK_DO; if (streq("default", 7, buf, len)) return TOK_DEFAULT; if (streq("delete", 6, buf, len)) return TOK_DELETE; if (streq("debugger", 8, buf, len)) return TOK_DEBUGGER; break; case 'e': if (streq("else", 4, buf, len)) return TOK_ELSE; if (streq("export", 6, buf, len)) return TOK_EXPORT; break; case 'f': if (streq("for", 3, buf, len)) return TOK_FOR; if (streq("from", 4, buf, len)) return TOK_FROM; if (streq("function", 8, buf, len)) return TOK_FUNC; if (streq("finally", 7, buf, len)) return TOK_FINALLY; if (streq("false", 5, buf, len)) return TOK_FALSE; break; case 'g': if (streq("globalThis", 10, buf, len)) return TOK_GLOBAL_THIS; break; case 'i': if (streq("if", 2, buf, len)) return TOK_IF; if (streq("import", 6, buf, len)) return TOK_IMPORT; if (streq("in", 2, buf, len)) return TOK_IN; if (streq("instanceof", 10, buf, len)) return TOK_INSTANCEOF; break; case 'l': if (streq("let", 3, buf, len)) return TOK_LET; break; case 'n': if (streq("new", 3, buf, len)) return TOK_NEW; if (streq("null", 4, buf, len)) return TOK_NULL; break; case 'o': if (streq("of", 2, buf, len)) return TOK_OF; break; case 'r': if (streq("return", 6, buf, len)) return TOK_RETURN; break; case 's': if (streq("switch", 6, buf, len)) return TOK_SWITCH; if (streq("static", 6, buf, len)) return TOK_STATIC; break; case 't': if (streq("try", 3, buf, len)) return TOK_TRY; if (streq("this", 4, buf, len)) return TOK_THIS; if (streq("throw", 5, buf, len)) return TOK_THROW; if (streq("true", 4, buf, len)) return TOK_TRUE; if (streq("typeof", 6, buf, len)) return TOK_TYPEOF; break; case 'u': if (streq("undefined", 9, buf, len)) return TOK_UNDEF; break; case 'v': if (streq("var", 3, buf, len)) return TOK_VAR; if (streq("void", 4, buf, len)) return TOK_VOID; break; case 'w': if (streq("while", 5, buf, len)) return TOK_WHILE; if (streq("with", 4, buf, len)) return TOK_WITH; if (streq("window", 6, buf, len)) return TOK_WINDOW; break; case 'y': if (streq("yield", 5, buf, len)) return TOK_YIELD; break; } return TOK_IDENTIFIER; } static int parse_unicode_escape(const char *buf, jsoff_t len, jsoff_t pos, uint32_t *codepoint) { if (pos + 5 >= len) return 0; if (buf[pos] != '\\' || buf[pos + 1] != 'u') return 0; uint32_t cp = 0; for (int i = 0; i < 4; i++) { char c = buf[pos + 2 + i]; cp <<= 4; if (c >= '0' && c <= '9') cp |= (c - '0'); else if (c >= 'a' && c <= 'f') cp |= (c - 'a' + 10); else if (c >= 'A' && c <= 'F') cp |= (c - 'A' + 10); else return 0; } *codepoint = cp; return 6; } static bool is_unicode_ident_begin(uint32_t cp) { return cp == '_' || cp == '$' || (cp >= 'a' && cp <= 'z') || (cp >= 'A' && cp <= 'Z') || cp >= 0x80; } static bool is_unicode_ident_continue(uint32_t cp) { return is_unicode_ident_begin(cp) || (cp >= '0' && cp <= '9'); } static int encode_utf8(uint32_t cp, char *out) { if (cp < 0x80) { out[0] = (char)cp; return 1; } else if (cp < 0x800) { out[0] = (char)(0xC0 | (cp >> 6)); out[1] = (char)(0x80 | (cp & 0x3F)); return 2; } else if (cp < 0x10000) { out[0] = (char)(0xE0 | (cp >> 12)); out[1] = (char)(0x80 | ((cp >> 6) & 0x3F)); out[2] = (char)(0x80 | (cp & 0x3F)); return 3; } else { out[0] = (char)(0xF0 | (cp >> 18)); out[1] = (char)(0x80 | ((cp >> 12) & 0x3F)); out[2] = (char)(0x80 | ((cp >> 6) & 0x3F)); out[3] = (char)(0x80 | (cp & 0x3F)); return 4; } } static size_t decode_ident_escapes(const char *src, size_t srclen, char *dst, size_t dstlen) { size_t si = 0, di = 0; while (si < srclen && di < dstlen - 1) { uint32_t cp; int el = parse_unicode_escape(src, srclen, si, &cp); if (el > 0) { int utf8len = encode_utf8(cp, dst + di); di += utf8len; si += el; } else { dst[di++] = src[si++]; } } dst[di] = '\0'; return di; } static bool has_unicode_escape(const char *src, size_t len) { for (size_t i = 0; i + 5 < len; i++) { if (src[i] == '\\' && src[i + 1] == 'u') return true; } return false; } static jsval_t js_mkstr_ident(struct js *js, const char *src, size_t srclen) { if (!has_unicode_escape(src, srclen)) { return js_mkstr(js, src, srclen); } char decoded[256]; size_t decoded_len = decode_ident_escapes(src, srclen, decoded, sizeof(decoded)); return js_mkstr(js, decoded, decoded_len); } static uint8_t parseident(const char *buf, jsoff_t len, jsoff_t *tlen) { if (len == 0) return TOK_ERR; if (!(buf[0] & 0x80) && buf[0] != '\\' && is_ident_begin(buf[0])) { *tlen = 1; while (*tlen < len && !(buf[*tlen] & 0x80) && buf[*tlen] != '\\' && is_ident_continue(buf[*tlen])) { (*tlen)++; } if (*tlen >= len || (!is_ident_continue(buf[*tlen]) && buf[*tlen] != '\\' && !(buf[*tlen] & 0x80))) { return parsekeyword(buf, *tlen); } } uint32_t first_cp; int esc_len = parse_unicode_escape(buf, len, 0, &first_cp); if (esc_len > 0) { if (!is_unicode_ident_begin(first_cp)) return TOK_ERR; *tlen = esc_len; } else if (is_ident_begin(buf[0])) { if (buf[0] & 0x80) { int ws_len = is_unicode_space((const unsigned char *)buf, len, NULL); if (ws_len > 0) return TOK_ERR; } *tlen = 1; while (*tlen < len && (buf[*tlen] & 0xC0) == 0x80) (*tlen)++; } else { return TOK_ERR; } while (*tlen < len) { uint32_t cp; int el = parse_unicode_escape(buf, len, *tlen, &cp); if (el > 0) { if (!is_unicode_ident_continue(cp)) break; *tlen += el; } else if (is_ident_continue(buf[*tlen])) { if (buf[*tlen] & 0x80) { int ws_len = is_unicode_space((const unsigned char *)&buf[*tlen], len - *tlen, NULL); if (ws_len > 0) break; } (*tlen)++; while (*tlen < len && (buf[*tlen] & 0xC0) == 0x80) (*tlen)++; } else { break; } } char decoded[256]; size_t decoded_len = decode_ident_escapes(buf, *tlen, decoded, sizeof(decoded)); return parsekeyword(decoded, decoded_len); } static uint8_t next(struct js *js) { if (js->consumed == 0) return js->tok; js->consumed = 0; js->tok = TOK_ERR; js->toff = js->pos = skiptonext(js->code, js->clen, js->pos, &js->had_newline); js->tlen = 0; const char *buf = js->code + js->toff; if (js->toff >= js->clen) { js->tok = TOK_EOF; return js->tok; } #define TOK(T, LEN) { js->tok = T; js->tlen = (LEN); break; } #define LOOK(OFS, CH) js->toff + OFS < js->clen && buf[OFS] == CH switch (buf[0]) { case '?': if (LOOK(1, '?')) TOK(TOK_NULLISH, 2); if (LOOK(1, '.')) TOK(TOK_OPTIONAL_CHAIN, 2); TOK(TOK_Q, 1); case ':': TOK(TOK_COLON, 1); case '(': TOK(TOK_LPAREN, 1); case ')': TOK(TOK_RPAREN, 1); case '{': TOK(TOK_LBRACE, 1); case '}': TOK(TOK_RBRACE, 1); case '[': TOK(TOK_LBRACKET, 1); case ']': TOK(TOK_RBRACKET, 1); case ';': TOK(TOK_SEMICOLON, 1); case ',': TOK(TOK_COMMA, 1); case '!': if (LOOK(1, '=') && LOOK(2, '=')) TOK(TOK_SNE, 3); if (LOOK(1, '=')) TOK(TOK_NE, 2); TOK(TOK_NOT, 1); case '.': if (LOOK(1, '.') && LOOK(2, '.')) TOK(TOK_REST, 3); if (js->toff + 1 < js->clen && is_digit(buf[1])) { char clean[64]; jsoff_t ci = 0, numlen = 0; while (js->toff + numlen < js->clen && (is_digit(buf[numlen]) || buf[numlen] == '.' || buf[numlen] == 'e' || buf[numlen] == 'E' || buf[numlen] == '+' || buf[numlen] == '-' || buf[numlen] == '_') && ci < 63) { if (numlen > 0 && (buf[numlen] == '+' || buf[numlen] == '-') && buf[numlen-1] != 'e' && buf[numlen-1] != 'E') break; if (buf[numlen] != '_') clean[ci++] = buf[numlen]; numlen++; } clean[ci] = '\0'; js->tval = tov(strtod(clean, NULL)); TOK(TOK_NUMBER, numlen); } TOK(TOK_DOT, 1); case '~': TOK(TOK_TILDA, 1); case '-': if (LOOK(1, '-')) TOK(TOK_POSTDEC, 2); if (LOOK(1, '=')) TOK(TOK_MINUS_ASSIGN, 2); TOK(TOK_MINUS, 1); case '+': if (LOOK(1, '+')) TOK(TOK_POSTINC, 2); if (LOOK(1, '=')) TOK(TOK_PLUS_ASSIGN, 2); TOK(TOK_PLUS, 1); case '*': if (LOOK(1, '*')) TOK(TOK_EXP, 2); if (LOOK(1, '=')) TOK(TOK_MUL_ASSIGN, 2); TOK(TOK_MUL, 1); case '/': if (LOOK(1, '=')) TOK(TOK_DIV_ASSIGN, 2); TOK(TOK_DIV, 1); case '%': if (LOOK(1, '=')) TOK(TOK_REM_ASSIGN, 2); TOK(TOK_REM, 1); case '&': if (LOOK(1, '&')) TOK(TOK_LAND, 2); if (LOOK(1, '=')) TOK(TOK_AND_ASSIGN, 2); TOK(TOK_AND, 1); case '|': if (LOOK(1, '|')) TOK(TOK_LOR, 2); if (LOOK(1, '=')) TOK(TOK_OR_ASSIGN, 2); TOK(TOK_OR, 1); case '=': if (LOOK(1, '=') && LOOK(2, '=')) TOK(TOK_SEQ, 3); if (LOOK(1, '=')) TOK(TOK_EQ, 2); if (LOOK(1, '>')) TOK(TOK_ARROW, 2); TOK(TOK_ASSIGN, 1); case '<': if (LOOK(1, '<') && LOOK(2, '=')) TOK(TOK_SHL_ASSIGN, 3); if (LOOK(1, '<')) TOK(TOK_SHL, 2); if (LOOK(1, '=')) TOK(TOK_LE, 2); TOK(TOK_LT, 1); case '>': if (LOOK(1, '>') && LOOK(2, '>') && LOOK(3, '=')) TOK(TOK_ZSHR_ASSIGN, 4); if (LOOK(1, '>') && LOOK(2, '>')) TOK(TOK_ZSHR, 3); if (LOOK(1, '>') && LOOK(2, '=')) TOK(TOK_SHR_ASSIGN, 3); if (LOOK(1, '>')) TOK(TOK_SHR, 2); if (LOOK(1, '=')) TOK(TOK_GE, 2); TOK(TOK_GT, 1); case '^': if (LOOK(1, '=')) TOK(TOK_XOR_ASSIGN, 2); TOK(TOK_XOR, 1); case '`': js->tlen++; while (js->toff + js->tlen < js->clen && buf[js->tlen] != '`') { uint8_t increment = 1; if (buf[js->tlen] == '\\') { if (js->toff + js->tlen + 2 > js->clen) break; increment = 2; } js->tlen += increment; } if (buf[js->tlen] == '`') js->tok = TOK_TEMPLATE, js->tlen++; break; case '"': case '\'': js->tlen++; while (js->toff + js->tlen < js->clen && buf[js->tlen] != buf[0]) { uint8_t increment = 1; if (buf[js->tlen] == '\\') { if (js->toff + js->tlen + 2 > js->clen) break; increment = 2; if (buf[js->tlen + 1] == 'x') { if (js->toff + js->tlen + 4 > js->clen) break; increment = 4; } else if (buf[js->tlen + 1] == 'u') { if (js->toff + js->tlen + 6 > js->clen) break; increment = 6; } } js->tlen += increment; } if (buf[0] == buf[js->tlen]) js->tok = TOK_STRING, js->tlen++; break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': { if ((js->flags & F_STRICT) && buf[0] == '0' && js->toff + 1 < js->clen && is_digit(buf[1]) && buf[1] != 'x' && buf[1] != 'X' && buf[1] != 'b' && buf[1] != 'B' && buf[1] != 'o' && buf[1] != 'O') { js->tok = TOK_ERR; js->tlen = 1; break; } char *end; double value = 0; jsoff_t numlen = 0; if (buf[0] == '0' && js->toff + 2 < js->clen) { if (buf[1] == 'b' || buf[1] == 'B') { numlen = 2; while (js->toff + numlen < js->clen && (buf[numlen] == '0' || buf[numlen] == '1' || buf[numlen] == '_')) { if (buf[numlen] != '_') value = value * 2 + (buf[numlen] - '0'); numlen++; } js->tval = tov(value); } else if (buf[1] == 'o' || buf[1] == 'O') { numlen = 2; while (js->toff + numlen < js->clen && ((buf[numlen] >= '0' && buf[numlen] <= '7') || buf[numlen] == '_')) { if (buf[numlen] != '_') value = value * 8 + (buf[numlen] - '0'); numlen++; } js->tval = tov(value); } else if (buf[1] == 'x' || buf[1] == 'X') { char clean[64]; jsoff_t ci = 0; numlen = 0; while (js->toff + numlen < js->clen && (is_xdigit(buf[numlen]) || buf[numlen] == 'x' || buf[numlen] == 'X' || buf[numlen] == '_') && ci < 63) { if (buf[numlen] != '_') clean[ci++] = buf[numlen]; numlen++; } clean[ci] = '\0'; js->tval = tov(strtod(clean, &end)); } else if (buf[1] >= '0' && buf[1] <= '7') { numlen = 1; while (js->toff + numlen < js->clen && buf[numlen] >= '0' && buf[numlen] <= '7') { value = value * 8 + (buf[numlen] - '0'); numlen++; } js->tval = tov(value); } else { char clean[64]; jsoff_t ci = 0; numlen = 0; while (js->toff + numlen < js->clen && (is_digit(buf[numlen]) || buf[numlen] == '.' || buf[numlen] == 'e' || buf[numlen] == 'E' || buf[numlen] == '+' || buf[numlen] == '-' || buf[numlen] == '_') && ci < 63) { if (numlen > 0 && (buf[numlen] == '+' || buf[numlen] == '-') && buf[numlen-1] != 'e' && buf[numlen-1] != 'E') break; if (buf[numlen] != '_') clean[ci++] = buf[numlen]; numlen++; } clean[ci] = '\0'; js->tval = tov(strtod(clean, &end)); } } else { char clean[64]; jsoff_t ci = 0; numlen = 0; while (js->toff + numlen < js->clen && (is_digit(buf[numlen]) || buf[numlen] == '.' || buf[numlen] == 'e' || buf[numlen] == 'E' || buf[numlen] == '+' || buf[numlen] == '-' || buf[numlen] == '_') && ci < 63) { if (numlen > 0 && (buf[numlen] == '+' || buf[numlen] == '-') && buf[numlen-1] != 'e' && buf[numlen-1] != 'E') break; if (buf[numlen] != '_') clean[ci++] = buf[numlen]; numlen++; } clean[ci] = '\0'; js->tval = tov(strtod(clean, &end)); } if (js->toff + numlen < js->clen && buf[numlen] == 'n') { js->tok = TOK_BIGINT; js->tlen = numlen + 1; } else { TOK(TOK_NUMBER, numlen); } break; } default: js->tok = parseident(buf, js->clen - js->toff, &js->tlen); break; } if (js->tlen == 0) js->tlen = 1; js->pos = js->toff + js->tlen; return js->tok; } static inline uint8_t lookahead(struct js *js) { uint8_t old = js->tok, tok = 0; uint8_t old_consumed = js->consumed; jsoff_t pos = js->pos; js->consumed = 1; tok = next(js); js->pos = pos; js->tok = old; js->consumed = old_consumed; return tok; } void js_mkscope(struct js *js) { assert((js->flags & F_NOEXEC) == 0); if (global_scope_stack == NULL) utarray_new(global_scope_stack, &jsoff_icd); jsoff_t prev = (jsoff_t) vdata(js->scope); utarray_push_back(global_scope_stack, &prev); js->scope = mkobj(js, prev); } void js_delscope(struct js *js) { if (global_scope_stack && utarray_len(global_scope_stack) > 0) { jsoff_t *prev = (jsoff_t *)utarray_back(global_scope_stack); js->scope = mkval(T_OBJ, *prev); utarray_pop_back(global_scope_stack); } else { js->scope = upper(js, js->scope); } } static void mkscope(struct js *js) { js_mkscope(js); } static void delscope(struct js *js) { js_delscope(js); } static inline bool push_this(jsval_t this_value) { if (global_this_stack.depth >= global_this_stack.capacity) { int new_capacity = global_this_stack.capacity == 0 ? 16 : global_this_stack.capacity * 2; jsval_t *new_stack = (jsval_t *) realloc(global_this_stack.stack, new_capacity * sizeof(jsval_t)); if (!new_stack) return false; global_this_stack.stack = new_stack; global_this_stack.capacity = new_capacity; } global_this_stack.stack[global_this_stack.depth++] = this_value; return true; } static inline jsval_t pop_this() { if (global_this_stack.depth > 0) { return global_this_stack.stack[--global_this_stack.depth]; } return js_mkundef(); } static inline jsval_t peek_this() { if (global_this_stack.depth > 0) { return global_this_stack.stack[global_this_stack.depth - 1]; } return js_mkundef(); } static inline bool push_call_frame(const char *filename, const char *function_name, const char *code, uint32_t pos) { if (global_call_stack.depth >= global_call_stack.capacity) { int new_capacity = global_call_stack.capacity == 0 ? 32 : global_call_stack.capacity * 2; call_frame_t *new_stack = (call_frame_t *) realloc(global_call_stack.frames, new_capacity * sizeof(call_frame_t)); if (!new_stack) return false; global_call_stack.frames = new_stack; global_call_stack.capacity = new_capacity; } global_call_stack.frames[global_call_stack.depth].filename = filename; global_call_stack.frames[global_call_stack.depth].function_name = function_name; global_call_stack.frames[global_call_stack.depth].code = code; global_call_stack.frames[global_call_stack.depth].pos = pos; global_call_stack.frames[global_call_stack.depth].line = -1; global_call_stack.frames[global_call_stack.depth].col = -1; global_call_stack.depth++; return true; } static inline void pop_call_frame() { if (global_call_stack.depth > 0) { global_call_stack.depth--; } } static jsval_t js_func_decl(struct js *js); static jsval_t js_func_decl_async(struct js *js); static void hoist_function_declarations(struct js *js) { if (js->flags & F_NOEXEC) return; if (js->is_hoisting) return; js->is_hoisting = true; js_parse_state_t saved; JS_SAVE_STATE(js, saved); jsval_t saved_scope = js->scope; int depth = 0; uint8_t tok; while ((tok = next(js)) != TOK_EOF && !(tok == TOK_RBRACE && depth == 0)) { if (tok == TOK_LBRACE) { depth++; js->consumed = 1; continue; } if (tok == TOK_RBRACE) { depth--; js->consumed = 1; continue; } if (depth > 0) { js->consumed = 1; continue; } if (tok == TOK_EXPORT) { js->consumed = 1; uint8_t next_tok = next(js); if (next_tok != TOK_FUNC && next_tok != TOK_ASYNC && next_tok != TOK_DEFAULT) goto skip_export; int brace_depth = 0; while (next(js) != TOK_EOF) { if (js->tok == TOK_LBRACE) brace_depth++; else if (js->tok == TOK_RBRACE && --brace_depth <= 0) break; js->consumed = 1; } skip_export: continue; } if (depth == 0 && tok == TOK_FUNC) { jsoff_t after_func = js->pos; js->consumed = 1; if (next(js) == TOK_IDENTIFIER) { js->pos = after_func; js->tok = TOK_FUNC; js->consumed = 1; js_func_decl(js); } continue; } if (depth == 0 && tok == TOK_ASYNC) { js->consumed = 1; if (next(js) == TOK_FUNC) { js_func_decl_async(js); } continue; } js->consumed = 1; } js->is_hoisting = false; JS_RESTORE_STATE(js, saved); js->scope = saved_scope; } static jsval_t js_block(struct js *js, bool create_scope) { jsval_t res = js_mkundef(); if (create_scope) mkscope(js); js->consumed = 1; hoist_function_declarations(js); uint8_t peek; while ((peek = next(js)) != TOK_EOF && peek != TOK_RBRACE && !is_err(res)) { uint8_t t = js->tok; res = js_stmt(js); bool is_block_tok = (t == TOK_LBRACE || t == TOK_IF || t == TOK_WHILE || t == TOK_DO || t == TOK_FUNC || t == TOK_FOR || t == TOK_IMPORT || t == TOK_EXPORT || t == TOK_SEMICOLON || t == TOK_SWITCH || t == TOK_TRY || t == TOK_CLASS || t == TOK_ASYNC); bool asi_ok = js->had_newline || js->tok == TOK_SEMICOLON || js->tok == TOK_RBRACE || js->tok == TOK_EOF; if (!is_err(res) && !is_block_tok && !asi_ok) { res = js_mkerr_typed(js, JS_ERR_SYNTAX, "; expected"); break; } if (js->flags & (F_RETURN | F_THROW)) break; } if (js->tok == TOK_RBRACE) js->consumed = 1; if (create_scope) delscope(js); return res; } static inline jsoff_t lkp_interned(struct js *js, jsval_t obj, const char *search_intern, size_t len) { jsoff_t obj_off = (jsoff_t)vdata(obj); uint32_t cache_slot = (((uintptr_t)search_intern >> 3) ^ obj_off) & (INTERN_PROP_CACHE_SIZE - 1); intern_prop_cache_entry_t *ce = &intern_prop_cache[cache_slot]; if (ce->obj_off == obj_off && ce->intern_ptr == search_intern) { return ce->prop_off; } jsoff_t off = loadoff(js, obj_off) & ~(3U | CONSTMASK | ARRMASK); while (off < js->brk && off != 0) { jsoff_t koff = loadoff(js, (jsoff_t) (off + sizeof(off))); jsoff_t klen = (loadoff(js, koff) >> 2) - 1; if (klen == len) { const char *stored_intern = get_koff_intern(koff); if (stored_intern) { if (stored_intern == search_intern) { ce->obj_off = obj_off; ce->intern_ptr = search_intern; ce->prop_off = off; return off; } } else { const char *p = (char *) &js->mem[koff + sizeof(koff)]; const char *new_intern = intern_string(p, klen); if (new_intern) set_koff_intern(koff, new_intern); if (new_intern == search_intern) { ce->obj_off = obj_off; ce->intern_ptr = search_intern; ce->prop_off = off; return off; } } } off = loadoff(js, off) & ~(3U | CONSTMASK | ARRMASK); } return 0; } static inline jsoff_t lkp_inline(struct js *js, jsval_t obj, const char *buf, size_t len) { const char *search_intern = intern_string(buf, len); if (!search_intern) return 0; return lkp_interned(js, obj, search_intern, len); } static jsoff_t lkp(struct js *js, jsval_t obj, const char *buf, size_t len) { return lkp_inline(js, obj, buf, len); } jsval_t js_get_proto(struct js *js, jsval_t obj) { uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC && t != T_PROMISE) return js_mknull(); jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t off = lkp_interned(js, as_obj, INTERN_PROTO, 9); if (off == 0) { if (t == T_FUNC || t == T_ARR || t == T_PROMISE) return get_prototype_for_type(js, t); return js_mknull(); } jsval_t val = resolveprop(js, mkval(T_PROP, off)); uint8_t vt = vtype(val); return (vt == T_OBJ || vt == T_ARR || vt == T_FUNC) ? val : js_mknull(); } static jsval_t get_proto(struct js *js, jsval_t obj) { return js_get_proto(js, obj); } void js_set_proto(struct js *js, jsval_t obj, jsval_t proto) { uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return; jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsval_t key = js_mkstr(js, "__proto__", 9); jsoff_t existing = lkp_interned(js, as_obj, INTERN_PROTO, 9); if (existing > 0) { saveval(js, existing + sizeof(jsoff_t) * 2, proto); } else { mkprop(js, as_obj, key, proto, false); } } static void set_proto(struct js *js, jsval_t obj, jsval_t proto) { js_set_proto(js, obj, proto); } jsval_t js_get_ctor_proto(struct js *js, const char *name, size_t len) { jsoff_t ctor_off = lkp(js, js->scope, name, len); if (ctor_off == 0 && global_scope_stack) { int stack_len = utarray_len(global_scope_stack); for (int i = stack_len - 1; i >= 0 && ctor_off == 0; i--) { jsoff_t *scope_off = (jsoff_t *)utarray_eltptr(global_scope_stack, i); jsval_t scope = mkval(T_OBJ, *scope_off); ctor_off = lkp(js, scope, name, len); } } else if (ctor_off == 0) { for (jsval_t scope = upper(js, js->scope); vdata(scope) != 0 && ctor_off == 0; scope = upper(js, scope)) { ctor_off = lkp(js, scope, name, len); } } if (ctor_off == 0) return js_mknull(); jsval_t ctor = resolveprop(js, mkval(T_PROP, ctor_off)); if (vtype(ctor) != T_FUNC) return js_mknull(); jsval_t ctor_obj = mkval(T_OBJ, vdata(ctor)); jsoff_t proto_off = lkp_interned(js, ctor_obj, INTERN_PROTOTYPE, 9); if (proto_off == 0) return js_mknull(); return resolveprop(js, mkval(T_PROP, proto_off)); } static jsval_t get_ctor_proto(struct js *js, const char *name, size_t len) { return js_get_ctor_proto(js, name, len); } static jsval_t get_prototype_for_type(struct js *js, uint8_t type) { switch (type) { case T_STR: return get_ctor_proto(js, "String", 6); case T_NUM: return get_ctor_proto(js, "Number", 6); case T_BOOL: return get_ctor_proto(js, "Boolean", 7); case T_ARR: return get_ctor_proto(js, "Array", 5); case T_FUNC: return get_ctor_proto(js, "Function", 8); case T_PROMISE: return get_ctor_proto(js, "Promise", 7); case T_OBJ: return get_ctor_proto(js, "Object", 6); case T_BIGINT: return get_ctor_proto(js, "BigInt", 6); default: return js_mknull(); } } static jsoff_t lkp_proto(struct js *js, jsval_t obj, const char *key, size_t len) { uint8_t t = vtype(obj); const char *key_intern = intern_string(key, len); if (!key_intern) return 0; if (key_intern == INTERN_PROTO) { if (t == T_OBJ || t == T_ARR || t == T_FUNC) { return lkp_interned(js, mkval(T_OBJ, vdata(obj)), key_intern, len); } return 0; } jsval_t cur = obj; int depth = 0; while (depth < 32) { if (t == T_OBJ || t == T_ARR || t == T_FUNC) { jsval_t as_obj = mkval(T_OBJ, vdata(cur)); jsoff_t off = lkp_interned(js, as_obj, key_intern, len); if (off != 0) return off; jsoff_t proto_off = lkp_interned(js, as_obj, INTERN_PROTO, 9); if (proto_off == 0) { if (t == T_FUNC || t == T_ARR) { cur = get_prototype_for_type(js, t); t = vtype(cur); if (t == T_NULL || t == T_UNDEF) break; depth++; continue; } break; } cur = resolveprop(js, mkval(T_PROP, proto_off)); t = vtype(cur); if (t == T_NULL || t == T_UNDEF) break; depth++; } else if (t == T_STR || t == T_NUM || t == T_BOOL || t == T_BIGINT) { cur = get_prototype_for_type(js, t); t = vtype(cur); if (t == T_NULL || t == T_UNDEF) break; depth++; } else if (t == T_CFUNC) { jsval_t func_proto = get_ctor_proto(js, "Function", 8); uint8_t ft = vtype(func_proto); if (ft == T_OBJ || ft == T_ARR || ft == T_FUNC) { jsoff_t off = lkp(js, mkval(T_OBJ, vdata(func_proto)), key, len); if (off != 0) return off; } break; } else { break; } } return 0; } static jsval_t try_dynamic_getter(struct js *js, jsval_t obj, const char *key, size_t key_len) { jsoff_t obj_off = (jsoff_t)vdata(obj); dynamic_accessors_t *entry = NULL; HASH_FIND(hh, accessor_registry, &obj_off, sizeof(jsoff_t), entry); if (!entry || !entry->getter) return js_mkundef(); return entry->getter(js, obj, key, key_len); } static bool try_dynamic_setter(struct js *js, jsval_t obj, const char *key, size_t key_len, jsval_t value) { jsoff_t obj_off = (jsoff_t)vdata(obj); dynamic_accessors_t *entry = NULL; HASH_FIND(hh, accessor_registry, &obj_off, sizeof(jsoff_t), entry); if (!entry || !entry->setter) return false; return entry->setter(js, obj, key, key_len, value); } static jsval_t lookup(struct js *js, const char *buf, size_t len) { if (js->flags & F_NOEXEC) return 0; char decoded[256]; const char *key_str = buf; size_t key_len = len; if (has_unicode_escape(buf, len)) { key_len = decode_ident_escapes(buf, len, decoded, sizeof(decoded)); key_str = decoded; } const char *key_intern = intern_string(key_str, key_len); for (jsval_t scope = js->scope;;) { jsoff_t off = lkp_interned(js, scope, key_intern, key_len); if (off != 0) return mkval(T_PROP, off); jsoff_t with_marker_off = lkp(js, scope, "__with_object__", 15); if (with_marker_off != 0) { jsval_t with_obj_val = resolveprop(js, mkval(T_PROP, with_marker_off)); jsval_t with_obj = ( vtype(with_obj_val) == T_OBJ || vtype(with_obj_val) == T_ARR || vtype(with_obj_val) == T_FUNC) ? with_obj_val : mkval(T_OBJ, vdata(with_obj_val) ); jsoff_t prop_off = lkp_interned(js, with_obj, key_intern, key_len); if (prop_off != 0) { jsval_t key = js_mkstr(js, key_str, key_len); if (is_err(key)) return key; return mkpropref((jsoff_t)vdata(with_obj), (jsoff_t)vdata(key)); } } if (vdata(scope) == 0) break; scope = upper(js, scope); } if (global_scope_stack && utarray_len(global_scope_stack) > 0) { jsoff_t *root_off = (jsoff_t *)utarray_eltptr(global_scope_stack, 0); if (root_off && *root_off != 0) { jsval_t root_scope = mkval(T_OBJ, *root_off); jsoff_t off = lkp(js, root_scope, key_str, key_len); if (off != 0) return mkval(T_PROP, off); } } return js_mkerr_typed(js, JS_ERR_REFERENCE, "'%.*s' is not defined", (int) key_len, key_str); } static bool try_accessor_getter(struct js *js, jsval_t obj, const char *key, size_t key_len, jsval_t *out) { jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, key_len); if (!desc || !desc->has_getter) return false; jsval_t getter = desc->getter; if (vtype(getter) != T_FUNC && vtype(getter) != T_CFUNC) return false; js_parse_state_t saved; JS_SAVE_STATE(js, saved); uint8_t saved_flags = js->flags; jsoff_t saved_toff = js->toff; jsoff_t saved_tlen = js->tlen; jsval_t saved_this = js->this_val; js->this_val = obj; push_this(obj); *out = call_js_with_args(js, getter, NULL, 0); pop_this(); js->this_val = saved_this; JS_RESTORE_STATE(js, saved); js->flags = saved_flags; js->toff = saved_toff; js->tlen = saved_tlen; return true; } static jsval_t resolveprop(struct js *js, jsval_t v) { if (vtype(v) == T_PROPREF) { jsoff_t obj_off = propref_obj(v); jsoff_t key_off = propref_key(v); jsval_t key = mkval(T_STR, key_off); jsoff_t len; const char *key_str = (const char *)&js->mem[vstr(js, key, &len)]; if (is_arr_off(js, obj_off) && streq(key_str, len, "length", 6)) { jsval_t arr = mkval(T_ARR, obj_off); return tov(arr_length(js, arr)); } jsval_t obj = mkval(T_OBJ, obj_off); if (is_proxy(js, obj)) return proxy_get(js, obj, key_str, len); jsval_t accessor_result; if (try_accessor_getter(js, obj, key_str, len, &accessor_result)) { return accessor_result; } jsoff_t prop_off = lkp(js, obj, key_str, len); if (prop_off != 0) return resolveprop(js, mkval(T_PROP, prop_off)); jsval_t dyn_result = try_dynamic_getter(js, obj, key_str, len); if (vtype(dyn_result) != T_UNDEF) return dyn_result; jsoff_t proto_off = lkp_proto(js, obj, key_str, len); if (proto_off != 0) return resolveprop(js, mkval(T_PROP, proto_off)); return js_mkundef(); } if (vtype(v) != T_PROP) return v; return resolveprop(js, loadval(js, (jsoff_t) (vdata(v) + sizeof(jsoff_t) * 2))); } static int check_prop_writable(struct js *js, jsval_t owner, const char *key, jsoff_t klen) { jsoff_t obj_off = (jsoff_t)vdata(owner); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, klen); if (!desc) return -1; return desc->writable ? 1 : 0; } static bool try_accessor_setter(struct js *js, jsval_t obj, const char *key, size_t key_len, jsval_t val, jsval_t *out) { jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, key_len); if (!desc || !desc->has_setter) return false; jsval_t setter = desc->setter; if (vtype(setter) != T_FUNC && vtype(setter) != T_CFUNC) return false; js_parse_state_t saved; JS_SAVE_STATE(js, saved); uint8_t saved_flags = js->flags; jsoff_t saved_toff = js->toff; jsoff_t saved_tlen = js->tlen; jsval_t saved_this = js->this_val; js->this_val = obj; push_this(obj); jsval_t result = call_js_with_args(js, setter, &val, 1); pop_this(); js->this_val = saved_this; JS_RESTORE_STATE(js, saved); js->flags = saved_flags; js->toff = saved_toff; js->tlen = saved_tlen; *out = is_err(result) ? result : val; return true; } static jsval_t assign(struct js *js, jsval_t lhs, jsval_t val) { if (vtype(lhs) == T_PROPREF) { jsoff_t obj_off = propref_obj(lhs); jsoff_t key_off = propref_key(lhs); jsval_t obj = mkval(is_arr_off(js, obj_off) ? T_ARR : T_OBJ, obj_off); jsval_t key = mkval(T_STR, key_off); return setprop(js, obj, key, val); } jsoff_t propoff = (jsoff_t) vdata(lhs); jsoff_t koff = loadoff(js, propoff + sizeof(jsoff_t)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *)&js->mem[koff + sizeof(jsoff_t)]; if (is_const_prop(js, propoff)) { if (js->flags & F_STRICT) return js_mkerr(js, "assignment to constant"); return mkval(T_PROP, propoff); } if ((klen == 9 && memcmp(key, "undefined", 9) == 0) || (klen == 3 && memcmp(key, "NaN", 3) == 0) || (klen == 8 && memcmp(key, "Infinity", 8) == 0)) { if (js->flags & F_STRICT) return js_mkerr(js, "Cannot assign to read only property"); return lhs; } saveval(js, (jsoff_t) ((vdata(lhs) & ~3U) + sizeof(jsoff_t) * 2), val); return lhs; } static jsval_t do_assign_op(struct js *js, uint8_t op, jsval_t l, jsval_t r) { uint8_t m[] = { TOK_PLUS, TOK_MINUS, TOK_MUL, TOK_DIV, TOK_REM, TOK_SHL, TOK_SHR, TOK_ZSHR, TOK_AND, TOK_XOR, TOK_OR }; jsval_t res = do_op(js, m[op - TOK_PLUS_ASSIGN], resolveprop(js, l), r); return assign(js, l, res); } typedef struct { char *buffer; size_t capacity; size_t size; bool is_dynamic; } string_builder_t; static void string_builder_init(string_builder_t *sb, char *static_buf, size_t static_cap) { sb->buffer = static_buf; sb->capacity = static_cap; sb->size = 0; sb->is_dynamic = false; } static bool string_builder_append(string_builder_t *sb, const char *data, size_t len) { if (sb->size + len > sb->capacity) { size_t new_capacity = sb->capacity ? sb->capacity * 2 : 256; while (new_capacity < sb->size + len) new_capacity *= 2; char *new_buffer = (char *)ANT_GC_MALLOC(new_capacity); if (!new_buffer) return false; if (sb->size > 0) memcpy(new_buffer, sb->buffer, sb->size); if (sb->is_dynamic) ANT_GC_FREE(sb->buffer); sb->buffer = new_buffer; sb->capacity = new_capacity; sb->is_dynamic = true; } if (len > 0) { memcpy(sb->buffer + sb->size, data, len); sb->size += len; } return true; } static jsval_t string_builder_finalize(struct js *js, string_builder_t *sb) { jsval_t result = js_mkstr(js, sb->buffer, sb->size); if (sb->is_dynamic && sb->buffer) ANT_GC_FREE(sb->buffer); return result; } static jsval_t do_string_op(struct js *js, uint8_t op, jsval_t l, jsval_t r) { jsoff_t n1, off1 = vstr(js, l, &n1); jsoff_t n2, off2 = vstr(js, r, &n2); if (op == TOK_PLUS) { string_builder_t sb; char static_buffer[512]; string_builder_init(&sb, static_buffer, sizeof(static_buffer)); if (!string_builder_append(&sb, (char *)&js->mem[off1], n1) || !string_builder_append(&sb, (char *)&js->mem[off2], n2)) { return js_mkerr(js, "string concatenation failed"); } return string_builder_finalize(js, &sb); } else if (op == TOK_EQ) { bool eq = n1 == n2 && memcmp(&js->mem[off1], &js->mem[off2], n1) == 0; return mkval(T_BOOL, eq ? 1 : 0); } else if (op == TOK_NE) { bool eq = n1 == n2 && memcmp(&js->mem[off1], &js->mem[off2], n1) == 0; return mkval(T_BOOL, eq ? 0 : 1); } else if (op == TOK_LT || op == TOK_LE || op == TOK_GT || op == TOK_GE) { jsoff_t min_len = n1 < n2 ? n1 : n2; int cmp = memcmp(&js->mem[off1], &js->mem[off2], min_len); if (cmp == 0) { if (n1 == n2) { return mkval(T_BOOL, (op == TOK_LE || op == TOK_GE) ? 1 : 0); } else { cmp = (n1 < n2) ? -1 : 1; } } switch (op) { case TOK_LT: return mkval(T_BOOL, cmp < 0 ? 1 : 0); case TOK_LE: return mkval(T_BOOL, cmp <= 0 ? 1 : 0); case TOK_GT: return mkval(T_BOOL, cmp > 0 ? 1 : 0); case TOK_GE: return mkval(T_BOOL, cmp >= 0 ? 1 : 0); default: return js_mkerr(js, "bad str op"); } } else { return js_mkerr(js, "bad str op"); } } static jsval_t do_bracket_op(struct js *js, jsval_t l, jsval_t r) { jsval_t obj = resolveprop(js, l); jsval_t key_val = resolveprop(js, r); char keybuf[64]; const char *keystr; size_t keylen; if (vtype(key_val) == T_NUM) { double dv = tod(key_val); if (dv >= 0 && dv <= 0xFFFFFFFF && dv == (double)(uint32_t)dv) { keylen = uint_to_str(keybuf, sizeof(keybuf), (uint32_t)dv); } else { keylen = strnum(key_val, keybuf, sizeof(keybuf)); } keystr = keybuf; } else if (vtype(key_val) == T_STR) { jsoff_t slen; jsoff_t off = vstr(js, key_val, &slen); keystr = (char *) &js->mem[off]; keylen = slen; } else if (vtype(key_val) == T_SYMBOL) { snprintf(keybuf, sizeof(keybuf), "__sym_%llu__", (unsigned long long)sym_get_id(key_val)); keystr = keybuf; keylen = strlen(keybuf); } else { return js_mkerr(js, "invalid index type"); } if (streq(keystr, keylen, "length", 6)) { if (vtype(obj) == T_STR) { return tov(offtolen(loadoff(js, (jsoff_t) vdata(obj)))); } if (vtype(obj) == T_ARR) { jsoff_t len_off = lkp(js, obj, "length", 6); if (len_off != 0) { return mkval(T_PROP, len_off); } jsval_t key = js_mkstr(js, "length", 6); jsval_t len_val = tov(arr_length(js, obj)); jsval_t prop = setprop(js, obj, key, len_val); return prop; } } if (vtype(obj) == T_STR) { if (vtype(key_val) == T_NUM) { double idx_d = tod(key_val); if (idx_d < 0 || idx_d != (double)(long)idx_d) { return js_mkundef(); } jsoff_t idx = (jsoff_t) idx_d; jsoff_t str_len = offtolen(loadoff(js, (jsoff_t) vdata(obj))); if (idx >= str_len) { return js_mkundef(); } jsoff_t str_off = (jsoff_t) vdata(obj) + sizeof(jsoff_t); char ch[2] = {js->mem[str_off + idx], 0}; return js_mkstr(js, ch, 1); } jsoff_t off = lkp_proto(js, obj, keystr, keylen); if (off != 0) return resolveprop(js, mkval(T_PROP, off)); return js_mkundef(); } if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR) { return js_mkundef(); } if ((streq(keystr, keylen, "callee", 6) || streq(keystr, keylen, "caller", 6)) && lkp(js, obj, "__strict_args__", 15) != 0) { return js_mkerr_typed(js, JS_ERR_TYPE, "'%.*s' not allowed on strict arguments", (int)keylen, keystr); } jsoff_t own_off = lkp(js, obj, keystr, keylen); if (own_off != 0) { jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, keystr, keylen); if (desc && (desc->has_getter || desc->has_setter)) { jsval_t key = js_mkstr(js, keystr, keylen); return mkpropref((jsoff_t)vdata(obj), (jsoff_t)vdata(key)); } return mkval(T_PROP, own_off); } jsval_t accessor_result; if (try_accessor_getter(js, obj, keystr, keylen, &accessor_result)) { return accessor_result; } jsval_t dyn_result = try_dynamic_getter(js, obj, keystr, keylen); if (vtype(dyn_result) != T_UNDEF) { jsval_t key = js_mkstr(js, keystr, keylen); return mkpropref((jsoff_t)vdata(obj), (jsoff_t)vdata(key)); } jsoff_t off = lkp_proto(js, obj, keystr, keylen); if (off == 0) { jsval_t key = js_mkstr(js, keystr, keylen); jsval_t prop = setprop(js, obj, key, js_mkundef()); return prop; } return mkval(T_PROP, off); } static jsval_t do_dot_op(struct js *js, jsval_t l, jsval_t r) { const char *raw_ptr = (char *) &js->code[coderefoff(r)]; size_t raw_len = codereflen(r); char decoded_buf[256]; size_t plen = decode_ident_escapes(raw_ptr, raw_len, decoded_buf, sizeof(decoded_buf)); const char *ptr = decoded_buf; if (vtype(r) != T_CODEREF) return js_mkerr_typed(js, JS_ERR_SYNTAX, "ident expected"); uint8_t t = vtype(l); if (t == T_STR && streq(ptr, plen, "length", 6)) { return tov(offtolen(loadoff(js, (jsoff_t) vdata(l)))); } if (t == T_ARR && streq(ptr, plen, "length", 6)) { jsval_t key = js_mkstr(js, "length", 6); return mkpropref((jsoff_t)vdata(l), (jsoff_t)vdata(key)); } if (t == T_STR || t == T_NUM || t == T_BOOL || t == T_BIGINT) { jsoff_t off = lkp_proto(js, l, ptr, plen); if (off != 0) { return resolveprop(js, mkval(T_PROP, off)); } return js_mkundef(); } if (t == T_PROMISE) { jsoff_t off = lkp_proto(js, mkval(T_OBJ, vdata(l)), ptr, plen); if (off != 0) { return resolveprop(js, mkval(T_PROP, off)); } jsval_t promise_proto = get_ctor_proto(js, "Promise", 7); if (vtype(promise_proto) != T_UNDEF && vtype(promise_proto) != T_NULL) { off = lkp_proto(js, promise_proto, ptr, plen); if (off != 0) { return resolveprop(js, mkval(T_PROP, off)); } } return js_mkundef(); } if (t == T_FUNC) { if ((js->flags & F_STRICT) && (streq(ptr, plen, "caller", 6) || streq(ptr, plen, "arguments", 9))) { return js_mkerr_typed(js, JS_ERR_TYPE, "'%.*s' not allowed on functions in strict mode", (int)plen, ptr); } jsval_t func_obj = mkval(T_OBJ, vdata(l)); jsoff_t off = lkp_proto(js, l, ptr, plen); if (off != 0) { jsoff_t obj_off = (jsoff_t)vdata(l); descriptor_entry_t *desc = lookup_descriptor(obj_off, ptr, plen); if (desc) { jsval_t key = js_mkstr(js, ptr, plen); return mkpropref(obj_off, (jsoff_t)vdata(key)); } return mkval(T_PROP, off); } if (streq(ptr, plen, "name", 4)) return js_mkstr(js, "", 0); jsval_t key = js_mkstr(js, ptr, plen); jsval_t prop = setprop(js, func_obj, key, js_mkundef()); return prop; } if (t == T_CFUNC) { if ((js->flags & F_STRICT) && (streq(ptr, plen, "caller", 6) || streq(ptr, plen, "arguments", 9))) { return js_mkerr_typed(js, JS_ERR_TYPE, "'%.*s' not allowed on functions in strict mode", (int)plen, ptr); } jsoff_t off = lkp_proto(js, l, ptr, plen); if (off != 0) return resolveprop(js, mkval(T_PROP, off)); if (streq(ptr, plen, "name", 4)) return js_mkstr(js, "", 0); return js_mkundef(); } if (t == T_SYMBOL) { if (streq(ptr, plen, "description", 11)) { const char *desc = sym_get_desc(js, l); if (desc) return js_mkstr(js, desc, strlen(desc)); return js_mkundef(); } return js_mkundef(); } if (t != T_OBJ && t != T_ARR) { char errbuf[256]; jsoff_t saved_toff = js->toff; jsoff_t saved_tlen = js->tlen; js->toff = coderefoff(r); js->tlen = codereflen(r); snprintf(errbuf, sizeof(errbuf), "Cannot read properties of %s (reading '%.*s')", t == T_UNDEF ? "undefined" : t == T_NULL ? "null" : typestr(t), (int)plen, ptr); jsval_t err = js_mkerr(js, errbuf); js->toff = saved_toff; js->tlen = saved_tlen; return err; } if ((streq(ptr, plen, "callee", 6) || streq(ptr, plen, "caller", 6)) && lkp(js, l, "__strict_args__", 15) != 0) { return js_mkerr_typed(js, JS_ERR_TYPE, "'%.*s' not allowed on strict arguments", (int)plen, ptr); } jsoff_t own_off = lkp(js, l, ptr, plen); if (own_off != 0) { jsoff_t obj_off = (jsoff_t)vdata(l); descriptor_entry_t *desc = lookup_descriptor(obj_off, ptr, plen); if (desc) { jsval_t key = js_mkstr(js, ptr, plen); return mkpropref((jsoff_t)vdata(l), (jsoff_t)vdata(key)); } return mkval(T_PROP, own_off); } jsval_t result = try_dynamic_getter(js, l, ptr, plen); if (vtype(result) != T_UNDEF) { own_off = lkp(js, l, ptr, plen); if (own_off != 0) return mkval(T_PROP, own_off); } jsval_t key = js_mkstr(js, ptr, plen); return mkpropref((jsoff_t)vdata(l), (jsoff_t)vdata(key)); } static jsval_t do_optional_chain_op(struct js *js, jsval_t l, jsval_t r) { if (vtype(l) == T_NULL || vtype(l) == T_UNDEF) return js_mkundef(); return do_dot_op(js, l, r); } static jsval_t js_call_params(struct js *js) { jsoff_t pos = js->pos; uint8_t flags = js->flags; js->flags |= F_NOEXEC; js->consumed = 1; for (bool comma = false; next(js) != TOK_EOF; comma = true) { if (!comma && next(js) == TOK_RPAREN) break; if (next(js) == TOK_REST) js->consumed = 1; js_expr(js); if (next(js) == TOK_RPAREN) break; EXPECT(TOK_COMMA, js->flags = flags); } EXPECT(TOK_RPAREN, js->flags = flags); js->flags = flags; return mkcoderef(pos, js->pos - pos - js->tlen); } static void reverse(jsval_t *args, int nargs) { for (int i = 0; i < nargs / 2; i++) { jsval_t tmp = args[i]; args[i] = args[nargs - i - 1], args[nargs - i - 1] = tmp; } } static jsval_t call_c(struct js *js, jsval_t (*fn)(struct js *, jsval_t *, int)) { int argc = 0; jsval_t target_this = peek_this(); while (js->pos < js->clen) { if (next(js) == TOK_RPAREN) break; bool is_spread = (next(js) == TOK_REST); if (is_spread) js->consumed = 1; jsval_t arg = resolveprop(js, js_expr(js)); if (is_err(arg)) return arg; if (is_spread && vtype(arg) == T_ARR) { jsoff_t len = arr_length(js, arg); for (jsoff_t i = 0; i < len; i++) { jsval_t elem = arr_get(js, arg, i); if (js->brk + sizeof(elem) > js->size) return js_mkerr(js, "call oom"); js->size -= (jsoff_t) sizeof(elem); memcpy(&js->mem[js->size], &elem, sizeof(elem)); argc++; } } else { if (js->brk + sizeof(arg) > js->size) return js_mkerr(js, "call oom"); js->size -= (jsoff_t) sizeof(arg); memcpy(&js->mem[js->size], &arg, sizeof(arg)); argc++; } if (next(js) == TOK_COMMA) js->consumed = 1; } jsval_t saved_this = js->this_val; js->this_val = target_this; reverse((jsval_t *) &js->mem[js->size], argc); jsval_t res = fn(js, (jsval_t *) &js->mem[js->size], argc); js->this_val = saved_this; setlwm(js); js->size += (jsoff_t) sizeof(jsval_t) * (jsoff_t) argc; return res; } static jsoff_t extract_default_param_value(const char *fn, jsoff_t fnlen, jsoff_t start_pos, jsoff_t *out_start, jsoff_t *out_len) { jsoff_t after_ident = skiptonext(fn, fnlen, start_pos, NULL); if (after_ident >= fnlen || fn[after_ident] != '=') { *out_start = 0; *out_len = 0; return after_ident; } jsoff_t default_start = skiptonext(fn, fnlen, after_ident + 1, NULL); jsoff_t default_len = 0; jsoff_t depth = 0; bool in_string = false; char string_char = 0; for (jsoff_t i = default_start; i < fnlen; i++) { if (in_string) { if (fn[i] == '\\' && i + 1 < fnlen) { default_len += 2; i++; continue; } if (fn[i] == string_char) { in_string = false; } default_len++; } else { if (fn[i] == '"' || fn[i] == '\'' || fn[i] == '`') { in_string = true; string_char = fn[i]; default_len++; } else if (fn[i] == '(' || fn[i] == '[' || fn[i] == '{') { depth++; default_len++; } else if (fn[i] == ')' || fn[i] == ']' || fn[i] == '}') { if (depth == 0 && fn[i] == ')') break; depth--; default_len++; } else if (depth == 0 && fn[i] == ',') { break; } else { default_len++; } } } *out_start = default_start; *out_len = default_len; return skiptonext(fn, fnlen, default_start + default_len, NULL); } static jsoff_t skip_default_expr(const char *p, jsoff_t len, jsoff_t pos) { int depth = 0; while (pos < len) { char c = p[pos]; if (c == '(' || c == '[' || c == '{') depth++; else if (c == ')' || c == ']' || c == '}') { if (depth == 0) break; depth--; } else if (c == ',' && depth == 0) break; pos++; } return pos; } static jsval_t bind_destruct_pattern(struct js *js, const char *p, jsoff_t len, jsval_t val, jsval_t scope) { jsoff_t pos = skiptonext(p, len, 0, NULL); if (pos >= len) return js_mkundef(); bool is_arr = (p[pos] == '['); if (!is_arr && p[pos] != '{') return js_mkerr(js, "invalid destructuring pattern"); pos++; int idx = 0; while (pos < len) { pos = skiptonext(p, len, pos, NULL); if (pos >= len) break; if ((is_arr && p[pos] == ']') || (!is_arr && p[pos] == '}')) break; if (p[pos] == ',') { pos++; idx++; continue; } bool is_rest = (pos + 2 < len && p[pos] == '.' && p[pos+1] == '.' && p[pos+2] == '.'); if (is_rest) { pos += 3; pos = skiptonext(p, len, pos, NULL); } jsoff_t name_len = 0; if (parseident(&p[pos], len - pos, &name_len) != TOK_IDENTIFIER) break; jsoff_t var_pos = pos, var_len = name_len; jsoff_t src_pos = pos, src_len = name_len; pos += name_len; pos = skiptonext(p, len, pos, NULL); if (!is_arr && !is_rest && pos < len && p[pos] == ':') { pos = skiptonext(p, len, pos + 1, NULL); jsoff_t rlen = 0; if (parseident(&p[pos], len - pos, &rlen) == TOK_IDENTIFIER) { var_pos = pos; var_len = rlen; pos += rlen; pos = skiptonext(p, len, pos, NULL); } } jsval_t prop_val; if (is_rest && is_arr) { jsval_t rest = js_mkarr(js); if (is_err(rest)) return rest; jsoff_t alen = arr_length(js, val); for (jsoff_t i = idx; i < alen; i++) js_arr_push(js, rest, arr_get(js, val, i)); prop_val = rest; } else if (is_rest) { prop_val = mkobj(js, 0); } else if (is_arr) { prop_val = arr_get(js, val, idx); } else { jsoff_t off = lkp(js, val, &p[src_pos], src_len); prop_val = off > 0 ? resolveprop(js, mkval(T_PROP, off)) : js_mkundef(); } if (is_rest) goto bind; if (pos >= len || p[pos] != '=') goto bind; pos++; jsoff_t def_start = pos; pos = skip_default_expr(p, len, pos); if (vtype(prop_val) != T_UNDEF) goto bind; prop_val = js_eval_str(js, &p[def_start], pos - def_start); if (is_err(prop_val)) return prop_val; prop_val = resolveprop(js, prop_val); bind:; jsval_t vname = js_mkstr(js, &p[var_pos], var_len); if (is_err(vname)) return vname; jsval_t r = setprop(js, scope, vname, prop_val); if (is_err(r)) return r; idx++; pos = skiptonext(p, len, pos, NULL); if (pos < len && p[pos] == ',') pos++; } return js_mkundef(); } static bool is_strict_function_body(const char *body, size_t len) { size_t i = 0; while (i < len && (body[i] == ' ' || body[i] == '\t' || body[i] == '\n' || body[i] == '\r')) i++; if (i + 12 <= len && (body[i] == '\'' || body[i] == '"')) { char q = body[i]; if (memcmp(&body[i+1], "use strict", 10) == 0 && body[i+11] == q) return true; } return false; } static parsed_func_t *get_or_parse_func(const char *fn, jsoff_t fnlen) { uint64_t h = hash_key(fn, fnlen); parsed_func_t *cached = NULL; HASH_FIND(hh, func_parse_cache, &h, sizeof(h), cached); if (cached) return cached; parsed_func_t *pf = (parsed_func_t *)malloc(sizeof(parsed_func_t)); if (!pf) return NULL; memset(pf, 0, sizeof(*pf)); pf->code_hash = h; jsoff_t fnpos = 1; while (fnpos < fnlen) { fnpos = skiptonext(fn, fnlen, fnpos, NULL); if (fnpos < fnlen && fn[fnpos] == ')') break; bool is_rest = false; if (fnpos + 3 < fnlen && fn[fnpos] == '.' && fn[fnpos + 1] == '.' && fn[fnpos + 2] == '.') { is_rest = true; pf->has_rest = true; fnpos += 3; fnpos = skiptonext(fn, fnlen, fnpos, NULL); } jsoff_t identlen = 0; uint8_t tok = parseident(&fn[fnpos], fnlen - fnpos, &identlen); if (tok != TOK_IDENTIFIER && (fn[fnpos] == '{' || fn[fnpos] == '[')) { char bracket_open = fn[fnpos]; char bracket_close = (bracket_open == '{') ? '}' : ']'; jsoff_t pattern_start = fnpos; int depth = 1; fnpos++; while (fnpos < fnlen && depth > 0) { if (fn[fnpos] == bracket_open) depth++; else if (fn[fnpos] == bracket_close) depth--; fnpos++; } jsoff_t pattern_len = fnpos - pattern_start; if (pf->param_count < MAX_FUNC_PARAMS) { parsed_param_t *pp = &pf->params[pf->param_count]; pp->is_destruct = true; pp->pattern_off = pattern_start; pp->pattern_len = pattern_len; fnpos = skiptonext(fn, fnlen, fnpos, NULL); if (fnpos < fnlen && fn[fnpos] == '=') { fnpos = extract_default_param_value(fn, fnlen, fnpos, &pp->default_start, &pp->default_len); } pf->param_count++; } if (fnpos < fnlen && fn[fnpos] == ',') fnpos++; continue; } if (tok != TOK_IDENTIFIER) break; if (is_rest) { pf->rest_param_start = fnpos; pf->rest_param_len = identlen; fnpos = skiptonext(fn, fnlen, fnpos + identlen, NULL); break; } if (pf->param_count < MAX_FUNC_PARAMS) { parsed_param_t *pp = &pf->params[pf->param_count]; pp->name_off = fnpos; pp->name_len = identlen; pp->is_destruct = false; fnpos = extract_default_param_value(fn, fnlen, fnpos + identlen, &pp->default_start, &pp->default_len); pf->param_count++; } else { fnpos = skiptonext(fn, fnlen, fnpos + identlen, NULL); } if (fnpos < fnlen && fn[fnpos] == ',') fnpos++; } if (fnpos < fnlen && fn[fnpos] == ')') fnpos++; fnpos = skiptonext(fn, fnlen, fnpos, NULL); if (fnpos < fnlen && fn[fnpos] == '{') fnpos++; pf->body_start = fnpos; pf->body_len = (fnlen > fnpos + 1) ? (fnlen - fnpos - 1) : 0; pf->is_strict = is_strict_function_body(&fn[fnpos], pf->body_len); HASH_ADD(hh, func_parse_cache, code_hash, sizeof(pf->code_hash), pf); return pf; } static bool is_eval_or_arguments(struct js *js, jsoff_t toff, jsoff_t tlen) { if (tlen == 4 && memcmp(&js->code[toff], "eval", 4) == 0) return true; if (tlen == 9 && memcmp(&js->code[toff], "arguments", 9) == 0) return true; return false; } static bool code_uses_arguments(const char *code, jsoff_t len) { if (len < 9) return false; for (jsoff_t i = 0; i + 8 < len; i++) { if (code[i] == 'a' && memcmp(&code[i], INTERN_ARGUMENTS, 9) == 0) { if (i > 0 && (is_alpha(code[i-1]) || code[i-1] == '_' || (code[i-1] >= '0' && code[i-1] <= '9'))) continue; if (i + 9 < len && (is_alpha(code[i+9]) || code[i+9] == '_' || (code[i+9] >= '0' && code[i+9] <= '9'))) continue; return true; } } return false; } static void setup_arguments(struct js *js, jsval_t scope, jsval_t *args, int nargs, bool strict) { if (vtype(js->current_func) == T_FUNC) { jsval_t func_obj = mkval(T_OBJ, vdata(js->current_func)); if (lkp_interned(js, func_obj, INTERN_THIS, 6) != 0) return; } jsval_t arguments_obj = mkobj(js, 0); for (int i = 0; i < nargs; i++) { if (i < 10) { setprop(js, arguments_obj, js_mkstr(js, INTERN_IDX[i], 1), args[i]); } else { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); setprop(js, arguments_obj, js_mkstr(js, idxstr, idxlen), args[i]); } } setprop_interned(js, arguments_obj, INTERN_LENGTH, 6, tov((double) nargs)); if (strict) { setprop(js, arguments_obj, js_mkstr(js, "__strict_args__", 15), js_mktrue()); } else if (vtype(js->current_func) == T_FUNC) { setprop_interned(js, arguments_obj, INTERN_CALLEE, 6, js->current_func); } const char *toStringTag_key = get_toStringTag_sym_key(); if (toStringTag_key && toStringTag_key[0] != '\0') { setprop(js, arguments_obj, js_mkstr(js, toStringTag_key, strlen(toStringTag_key)), js_mkstr(js, "Arguments", 9)); } arguments_obj = mkval(T_ARR, vdata(arguments_obj)); setprop_interned(js, scope, INTERN_ARGUMENTS, 9, arguments_obj); } static jsval_t call_js_internal(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *bound_args, int bound_argc) { return call_js_internal_nfe(js, fn, fnlen, closure_scope, bound_args, bound_argc, js_mkundef(), js_mkundef()); } static jsval_t call_js_internal_nfe(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *bound_args, int bound_argc, jsval_t func_name, jsval_t func_val) { jsval_t saved_scope = js->scope; jsval_t saved_this_val = js->this_val; jsval_t target_this = peek_this(); jsoff_t parent_scope_offset; if (vtype(closure_scope) == T_OBJ) { parent_scope_offset = (jsoff_t) vdata(closure_scope); } else { parent_scope_offset = (jsoff_t) vdata(js->scope); } if (global_scope_stack == NULL) utarray_new(global_scope_stack, &jsoff_icd); utarray_push_back(global_scope_stack, &parent_scope_offset); jsval_t function_scope = mkobj(js, parent_scope_offset); const char *caller_code = js->code; jsoff_t caller_clen = js->clen; jsoff_t caller_pos = js->pos; jsval_t args[MAX_FUNC_PARAMS]; int argc = 0; for (int i = 0; i < bound_argc && argc < MAX_FUNC_PARAMS; i++) { args[argc++] = bound_args[i]; } caller_pos = skiptonext(caller_code, caller_clen, caller_pos, NULL); while (caller_pos < caller_clen && caller_code[caller_pos] != ')' && argc < MAX_FUNC_PARAMS) { bool is_spread = ( caller_code[caller_pos] == '.' && caller_pos + 2 < caller_clen && caller_code[caller_pos + 1] == '.' && caller_code[caller_pos + 2] == '.' ); if (is_spread) caller_pos += 3; js->pos = caller_pos; js->consumed = 1; jsval_t arg = resolveprop(js, js_expr(js)); caller_pos = js->pos; if (is_spread && vtype(arg) == T_ARR) { jsoff_t len = arr_length(js, arg); for (jsoff_t i = 0; i < len && argc < MAX_FUNC_PARAMS; i++) { args[argc++] = arr_get(js, arg, i); } } else { args[argc++] = arg; } caller_pos = skiptonext(caller_code, caller_clen, caller_pos, NULL); if (caller_pos < caller_clen && caller_code[caller_pos] == ',') caller_pos++; caller_pos = skiptonext(caller_code, caller_clen, caller_pos, NULL); } js->pos = caller_pos; js->scope = function_scope; parsed_func_t *pf = get_or_parse_func(fn, fnlen); if (!pf) { js->scope = saved_scope; if (global_scope_stack && utarray_len(global_scope_stack) > 0) utarray_pop_back(global_scope_stack); return js_mkerr(js, "failed to parse function"); } int argi = 0; for (int i = 0; i < pf->param_count && i < MAX_FUNC_PARAMS; i++) { parsed_param_t *pp = &pf->params[i]; if (pp->is_destruct) { jsval_t arg_val = (argi < argc) ? args[argi++] : js_mkundef(); if (vtype(arg_val) == T_UNDEF && pp->default_len > 0) { arg_val = js_eval_str(js, &fn[pp->default_start], pp->default_len); } jsval_t r = bind_destruct_pattern(js, &fn[pp->pattern_off], pp->pattern_len, arg_val, function_scope); if (is_err(r)) { js->scope = saved_scope; if (global_scope_stack && utarray_len(global_scope_stack) > 0) utarray_pop_back(global_scope_stack); return r; } } else { jsval_t v; if (argi < argc) { v = args[argi++]; } else if (pp->default_len > 0) { v = js_eval_str(js, &fn[pp->default_start], pp->default_len); } else { v = js_mkundef(); } setprop_fast(js, function_scope, &fn[pp->name_off], pp->name_len, v); } } if (pf->has_rest && pf->rest_param_len > 0) { jsval_t rest_array = mkarr(js); if (!is_err(rest_array)) { jsoff_t idx = 0; while (argi < argc) { jsval_t key; if (idx < 10 && INTERN_IDX[idx]) { key = js_mkstr(js, INTERN_IDX[idx], 1); } else { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); key = js_mkstr(js, idxstr, idxlen); } setprop(js, rest_array, key, args[argi++]); idx++; } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, rest_array, len_key, tov((double) idx)); rest_array = mkval(T_ARR, vdata(rest_array)); setprop(js, function_scope, js_mkstr(js, &fn[pf->rest_param_start], pf->rest_param_len), rest_array); } } bool func_strict = pf->is_strict; if (!func_strict && vtype(func_val) == T_FUNC) { jsval_t func_obj = mkval(T_OBJ, vdata(func_val)); jsoff_t strict_off = lkp(js, func_obj, "__strict", 8); if (strict_off != 0) { jsval_t strict_val = resolveprop(js, mkval(T_PROP, strict_off)); func_strict = (vtype(strict_val) == T_BOOL && vdata(strict_val) == 1); } } if (code_uses_arguments(&fn[pf->body_start], pf->body_len)) { setup_arguments(js, function_scope, args, argc, func_strict); } if (vtype(func_name) == T_STR && vtype(func_val) == T_FUNC) { jsoff_t len; (void)vstr(js, func_name, &len); if (len > 0) { jsval_t prop = mkprop(js, function_scope, func_name, func_val, true); (void)prop; } } if (func_strict && (vtype(target_this) == T_UNDEF || vtype(target_this) == T_NULL || (vtype(target_this) == T_OBJ && vdata(target_this) == 0))) { js->this_val = js_mkundef(); } else { js->this_val = target_this; } js->flags = F_CALL | (func_strict ? F_STRICT : 0); jsval_t res = js_eval(js, &fn[pf->body_start], pf->body_len); if (!is_err(res) && !(js->flags & F_RETURN)) res = js_mkundef(); if (global_scope_stack && utarray_len(global_scope_stack) > 0) utarray_pop_back(global_scope_stack); js->scope = saved_scope; js->this_val = saved_this_val; return res; } static jsval_t call_js(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope) { return call_js_internal(js, fn, fnlen, closure_scope, NULL, 0); } static jsval_t call_js_with_args(struct js *js, jsval_t func, jsval_t *args, int nargs) { if (vtype(func) == T_CFUNC) { jsval_t (*fn)(struct js *, jsval_t *, int) = (jsval_t(*)(struct js *, jsval_t *, int)) vdata(func); return fn(js, args, nargs); } if (vtype(func) != T_FUNC) return js_mkerr(js, "not a function"); jsval_t func_obj = mkval(T_OBJ, vdata(func)); jsval_t *combined_args = NULL; int combined_nargs = nargs; int bound_argc = 0; jsoff_t bound_args_off = lkp_interned(js, func_obj, INTERN_BOUND_ARGS, 12); if (bound_args_off != 0) { jsval_t bound_arr = resolveprop(js, mkval(T_PROP, bound_args_off)); if (vtype(bound_arr) == T_ARR) { jsoff_t len_off = lkp_interned(js, bound_arr, INTERN_LENGTH, 6); if (len_off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) == T_NUM) { bound_argc = (int) tod(len_val); } } if (bound_argc > 0) { combined_nargs = bound_argc + nargs; combined_args = (jsval_t *)ANT_GC_MALLOC(sizeof(jsval_t) * combined_nargs); if (combined_args) { for (int i = 0; i < bound_argc; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); jsoff_t prop_off = lkp(js, bound_arr, idx, strlen(idx)); combined_args[i] = (prop_off != 0) ? resolveprop(js, mkval(T_PROP, prop_off)) : js_mkundef(); } for (int i = 0; i < nargs; i++) { combined_args[bound_argc + i] = args[i]; } args = combined_args; nargs = combined_nargs; } } } } jsoff_t native_off = lkp_interned(js, func_obj, INTERN_NATIVE_FUNC, 13); if (native_off != 0) { jsval_t native_val = resolveprop(js, mkval(T_PROP, native_off)); if (vtype(native_val) == T_CFUNC) { jsoff_t this_off = lkp_interned(js, func_obj, INTERN_BOUND_THIS, 12); jsval_t bound_this = js_mkundef(); if (this_off != 0) { bound_this = resolveprop(js, mkval(T_PROP, this_off)); } jsval_t saved_this = js->this_val; if (vtype(bound_this) != JS_UNDEF) { push_this(bound_this); js->this_val = bound_this; } jsval_t (*fn)(struct js *, jsval_t *, int) = (jsval_t(*)(struct js *, jsval_t *, int)) vdata(native_val); jsval_t result = fn(js, args, nargs); if (vtype(bound_this) != JS_UNDEF) { pop_this(); js->this_val = saved_this; } if (combined_args) ANT_GC_FREE(combined_args); return result; } } jsoff_t code_off = lkp_interned(js, func_obj, INTERN_CODE, 6); if (code_off == 0) { if (combined_args) ANT_GC_FREE(combined_args); return js_mkerr(js, "function has no code"); } jsval_t code_val = resolveprop(js, mkval(T_PROP, code_off)); if (vtype(code_val) != T_STR) { if (combined_args) ANT_GC_FREE(combined_args); return js_mkerr(js, "function code not string"); } jsoff_t fnlen, fnoff = vstr(js, code_val, &fnlen); const char *fn = (const char *) (&js->mem[fnoff]); jsval_t closure_scope = js_mkundef(); jsoff_t scope_off = lkp_interned(js, func_obj, INTERN_SCOPE, 7); if (scope_off != 0) { closure_scope = resolveprop(js, mkval(T_PROP, scope_off)); } jsoff_t this_off = lkp_interned(js, func_obj, INTERN_THIS, 6); if (this_off != 0) { jsval_t captured_this = resolveprop(js, mkval(T_PROP, this_off)); pop_this(); push_this(captured_this); } jsoff_t bound_this_off = lkp_interned(js, func_obj, INTERN_BOUND_THIS, 12); if (bound_this_off != 0) { jsval_t bound_this = resolveprop(js, mkval(T_PROP, bound_this_off)); pop_this(); push_this(bound_this); } jsval_t func_name = js_mkundef(); jsoff_t name_off = lkp(js, func_obj, "name", 4); if (name_off != 0) { func_name = resolveprop(js, mkval(T_PROP, name_off)); } jsval_t result = call_js_code_with_args_nfe(js, fn, fnlen, closure_scope, args, nargs, func_name, func); if (combined_args) ANT_GC_FREE(combined_args); return result; } static jsval_t call_js_code_with_args(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *args, int nargs) { return call_js_code_with_args_nfe(js, fn, fnlen, closure_scope, args, nargs, js_mkundef(), js_mkundef()); } static jsval_t call_js_code_with_args_nfe(struct js *js, const char *fn, jsoff_t fnlen, jsval_t closure_scope, jsval_t *args, int nargs, jsval_t func_name, jsval_t func_val) { jsoff_t parent_scope_offset; if (vtype(closure_scope) == T_OBJ) { parent_scope_offset = (jsoff_t) vdata(closure_scope); } else { parent_scope_offset = (jsoff_t) vdata(js->scope); } jsval_t saved_scope = js->scope; if (global_scope_stack == NULL) utarray_new(global_scope_stack, &jsoff_icd); utarray_push_back(global_scope_stack, &parent_scope_offset); jsval_t function_scope = mkobj(js, parent_scope_offset); js->scope = function_scope; if (vtype(func_name) == T_STR && vtype(func_val) == T_FUNC) { jsoff_t len; (void)vstr(js, func_name, &len); if (len > 0) { jsval_t prop = mkprop(js, function_scope, func_name, func_val, true); (void)prop; } } jsoff_t fnpos = 1; int arg_idx = 0; bool has_rest = false; jsoff_t rest_param_start = 0, rest_param_len = 0; while (fnpos < fnlen) { fnpos = skiptonext(fn, fnlen, fnpos, NULL); if (fnpos < fnlen && fn[fnpos] == ')') break; bool is_rest = false; if (fnpos + 3 < fnlen && fn[fnpos] == '.' && fn[fnpos + 1] == '.' && fn[fnpos + 2] == '.') { is_rest = true; has_rest = true; fnpos += 3; fnpos = skiptonext(fn, fnlen, fnpos, NULL); } jsoff_t identlen = 0; uint8_t tok = parseident(&fn[fnpos], fnlen - fnpos, &identlen); fnpos = skiptonext(fn, fnlen, fnpos, NULL); if (tok != TOK_IDENTIFIER && fnpos < fnlen && (fn[fnpos] == '{' || fn[fnpos] == '[')) { char bracket_open = fn[fnpos]; char bracket_close = (bracket_open == '{') ? '}' : ']'; jsoff_t pattern_start = fnpos; int depth = 1; fnpos++; while (fnpos < fnlen && depth > 0) { if (fn[fnpos] == bracket_open) depth++; else if (fn[fnpos] == bracket_close) depth--; fnpos++; } jsoff_t pattern_len = fnpos - pattern_start; jsval_t arg_val = (arg_idx < nargs) ? args[arg_idx] : js_mkundef(); jsval_t r = bind_destruct_pattern(js, &fn[pattern_start], pattern_len, arg_val, function_scope); if (is_err(r)) return r; arg_idx++; fnpos = skiptonext(fn, fnlen, fnpos, NULL); if (fnpos < fnlen && fn[fnpos] == ',') fnpos++; continue; } if (tok != TOK_IDENTIFIER) break; if (is_rest) { rest_param_start = fnpos; rest_param_len = identlen; fnpos = skiptonext(fn, fnlen, fnpos + identlen, NULL); break; } jsoff_t param_name_pos = fnpos; jsoff_t default_start = 0, default_len = 0; fnpos = extract_default_param_value(fn, fnlen, fnpos + identlen, &default_start, &default_len); jsval_t v; if (arg_idx < nargs) { v = args[arg_idx]; } else if (default_len > 0) { v = js_eval_str(js, &fn[default_start], default_len); } else { v = js_mkundef(); } setprop(js, function_scope, js_mkstr(js, &fn[param_name_pos], identlen), v); arg_idx++; if (fnpos < fnlen && fn[fnpos] == ',') fnpos++; } if (has_rest && rest_param_len > 0) { jsval_t rest_array = mkarr(js); if (!is_err(rest_array)) { jsoff_t idx = 0; while (arg_idx < nargs) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, rest_array, key, args[arg_idx]); idx++; arg_idx++; } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, rest_array, len_key, tov((double) idx)); rest_array = mkval(T_ARR, vdata(rest_array)); setprop(js, function_scope, js_mkstr(js, &fn[rest_param_start], rest_param_len), rest_array); } } if (fnpos < fnlen && fn[fnpos] == ')') fnpos++; fnpos = skiptonext(fn, fnlen, fnpos, NULL); if (fnpos < fnlen && fn[fnpos] == '{') fnpos++; size_t body_len = fnlen - fnpos - 1; bool func_strict = is_strict_function_body(&fn[fnpos], body_len); if (code_uses_arguments(&fn[fnpos], body_len)) { setup_arguments(js, function_scope, args, nargs, func_strict); } jsval_t saved_this = js->this_val; jsval_t target_this = peek_this(); if (func_strict && (vtype(target_this) == T_UNDEF || vtype(target_this) == T_NULL || (vtype(target_this) == T_OBJ && vdata(target_this) == 0))) { js->this_val = js_mkundef(); } else { js->this_val = target_this; } js->flags = F_CALL | (func_strict ? F_STRICT : 0); jsval_t res = js_eval(js, &fn[fnpos], body_len); if (!is_err(res) && !(js->flags & F_RETURN)) res = js_mkundef(); js->this_val = saved_this; if (global_scope_stack && utarray_len(global_scope_stack) > 0) utarray_pop_back(global_scope_stack); js->scope = saved_scope; return res; } static jsval_t do_call_op(struct js *js, jsval_t func, jsval_t args) { if (vtype(args) != T_CODEREF) return js_mkerr(js, "bad call"); if (vtype(func) != T_FUNC && vtype(func) != T_CFUNC) return js_mkerr(js, "calling non-function"); jsval_t target_this = peek_this(); bool is_constructor_call = (vtype(target_this) == T_OBJ && lkp_interned(js, target_this, INTERN_PROTO, 9) == 0); if (vtype(func) == T_FUNC && vtype(target_this) == T_OBJ) { jsoff_t proto_check = lkp_interned(js, target_this, INTERN_PROTO, 9); if (proto_check == 0) { jsval_t func_obj = mkval(T_OBJ, vdata(func)); jsoff_t target_func_off = lkp_interned(js, func_obj, INTERN_TARGET_FUNC, 13); jsval_t proto_source = func_obj; if (target_func_off != 0) { jsval_t target_func = resolveprop(js, mkval(T_PROP, target_func_off)); if (vtype(target_func) == T_FUNC) { proto_source = mkval(T_OBJ, vdata(target_func)); } } jsoff_t proto_off = lkp_interned(js, proto_source, INTERN_PROTOTYPE, 9); if (proto_off != 0) { jsval_t proto = resolveprop(js, mkval(T_PROP, proto_off)); if (vtype(proto) == T_OBJ) set_proto(js, target_this, proto); } } } const char *code = js->code; jsoff_t clen = js->clen, pos = js->pos; js->code = &js->code[coderefoff(args)]; js->clen = codereflen(args); js->pos = skiptonext(js->code, js->clen, 0, NULL); uint8_t tok = js->tok, flags = js->flags; jsoff_t nogc = js->nogc; jsval_t res = js_mkundef(); if (vtype(func) == T_FUNC) { jsval_t func_obj = mkval(T_OBJ, vdata(func)); jsoff_t native_off = lkp_interned(js, func_obj, INTERN_NATIVE_FUNC, 13); if (native_off != 0) { jsval_t native_val = resolveprop(js, mkval(T_PROP, native_off)); if (vtype(native_val) == T_CFUNC) { jsval_t saved_func = js->current_func; js->current_func = func; res = call_c(js, (jsval_t(*)(struct js *, jsval_t *, int)) vdata(native_val)); js->current_func = saved_func; } } else { jsoff_t code_off = lkp_interned(js, func_obj, INTERN_CODE, 6); if (code_off == 0) return js_mkerr(js, "function has no code"); jsval_t code_val = resolveprop(js, mkval(T_PROP, code_off)); if (vtype(code_val) != T_STR) return js_mkerr(js, "function code not string"); jsval_t closure_scope = js_mkundef(); jsoff_t scope_off = lkp_interned(js, func_obj, INTERN_SCOPE, 7); if (scope_off != 0) { closure_scope = resolveprop(js, mkval(T_PROP, scope_off)); } jsoff_t fnlen, fnoff = vstr(js, code_val, &fnlen); const char *code_str = (const char *) (&js->mem[fnoff]); bool is_async = false; jsoff_t async_off = lkp_interned(js, func_obj, INTERN_ASYNC, 7); if (async_off != 0) { jsval_t async_val = resolveprop(js, mkval(T_PROP, async_off)); is_async = vtype(async_val) == T_BOOL && vdata(async_val) == 1; } jsval_t captured_this = js_mkundef(); bool is_arrow = false; bool is_bound = false; jsoff_t this_off = lkp_interned(js, func_obj, INTERN_THIS, 6); if (this_off != 0) { captured_this = resolveprop(js, mkval(T_PROP, this_off)); is_arrow = true; } jsoff_t bound_this_off = lkp_interned(js, func_obj, INTERN_BOUND_THIS, 12); if (bound_this_off != 0 && !is_constructor_call) { captured_this = resolveprop(js, mkval(T_PROP, bound_this_off)); is_bound = true; } jsval_t bound_args_storage[64]; jsval_t *bound_args = NULL; int bound_argc = 0; jsoff_t bound_args_off = lkp_interned(js, func_obj, INTERN_BOUND_ARGS, 12); if (bound_args_off != 0) { jsval_t bound_arr = resolveprop(js, mkval(T_PROP, bound_args_off)); if (vtype(bound_arr) == T_ARR) { jsoff_t len_off = lkp_interned(js, bound_arr, INTERN_LENGTH, 6); if (len_off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) == T_NUM) { bound_argc = (int) tod(len_val); if (bound_argc > 64) bound_argc = 64; } } if (bound_argc > 0) { bound_args = bound_args_storage; for (int i = 0; i < bound_argc; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); jsoff_t prop_off = lkp(js, bound_arr, idx, strlen(idx)); bound_args[i] = (prop_off != 0) ? resolveprop(js, mkval(T_PROP, prop_off)) : js_mkundef(); } } } } jsval_t nfe_name_val = js_mkundef(); jsoff_t nfe_name_off = lkp(js, func_obj, "name", 4); if (nfe_name_off != 0) { nfe_name_val = resolveprop(js, mkval(T_PROP, nfe_name_off)); } if (fnlen == 16 && memcmp(code_str, "__builtin_Object", 16) == 0) { res = call_c(js, builtin_Object); } else { static char full_func_name[256]; const char *func_name = NULL; const char *this_name = NULL; if (vtype(nfe_name_val) == T_STR) { jsoff_t name_len, name_offset = vstr(js, nfe_name_val, &name_len); func_name = (const char *)&js->mem[name_offset]; } if (vtype(target_this) != T_OBJ) goto skip_constructor_name; jsoff_t ctor_off = lkp_interned(js, target_this, INTERN_CONSTRUCTOR, 11); if (ctor_off == 0) goto default_object_name; jsval_t ctor_val = resolveprop(js, mkval(T_PROP, ctor_off)); if (vtype(ctor_val) != T_FUNC) goto default_object_name; jsval_t ctor_obj = mkval(T_OBJ, vdata(ctor_val)); jsoff_t ctor_name_off = lkp(js, ctor_obj, "name", 4); if (ctor_name_off == 0) goto default_object_name; jsval_t ctor_name_val = resolveprop(js, mkval(T_PROP, ctor_name_off)); if (vtype(ctor_name_val) != T_STR) goto default_object_name; jsoff_t ctor_name_len, ctor_name_offset = vstr(js, ctor_name_val, &ctor_name_len); this_name = (const char *)&js->mem[ctor_name_offset]; if (this_name && strlen(this_name) > 0) goto skip_constructor_name; default_object_name: this_name = "Object"; skip_constructor_name: const char *final_name; if (this_name && func_name) { snprintf(full_func_name, sizeof(full_func_name), "%s.%s", this_name, func_name); final_name = full_func_name; } else if (func_name) { final_name = func_name; } else if (this_name) { snprintf(full_func_name, sizeof(full_func_name), "%s.", this_name); final_name = full_func_name; } else { final_name = ""; } push_call_frame( js->filename, final_name, code, pos ); jsval_t saved_func = js->current_func; js->current_func = func; js->nogc = (jsoff_t) (fnoff - sizeof(jsoff_t)); if (is_arrow || is_bound) { pop_this(); push_this(captured_this); } jsoff_t count_off = lkp(js, func_obj, "__field_count", 13); if (count_off == 0 || vtype(target_this) != T_OBJ) goto skip_fields; jsval_t count_val = resolveprop(js, mkval(T_PROP, count_off)); if (vtype(count_val) != T_NUM) goto skip_fields; int field_count = (int)tod(count_val); jsoff_t src_off = lkp(js, func_obj, "__source", 8); jsoff_t fields_off = lkp(js, func_obj, "__fields", 8); if (src_off == 0 || fields_off == 0) goto skip_fields; jsval_t src_val = resolveprop(js, mkval(T_PROP, src_off)); jsval_t fields_meta = resolveprop(js, mkval(T_PROP, fields_off)); if (vtype(src_val) != T_STR || vtype(fields_meta) != T_STR) goto skip_fields; jsoff_t src_len, src_ptr_off = vstr(js, src_val, &src_len); const char *source = (const char *)(&js->mem[src_ptr_off]); jsoff_t meta_len, meta_ptr_off = vstr(js, fields_meta, &meta_len); const jsoff_t *metadata = (const jsoff_t *)(&js->mem[meta_ptr_off]); for (int i = 0; i < field_count; i++) { jsoff_t name_off = metadata[i * 4 + 0]; jsoff_t name_len = metadata[i * 4 + 1]; jsoff_t init_start = metadata[i * 4 + 2]; jsoff_t init_end = metadata[i * 4 + 3]; jsval_t fname = js_mkstr(js, &source[name_off], name_len); if (is_err(fname)) { js->current_func = saved_func; pop_call_frame(); return fname; } jsval_t field_val = js_mkundef(); if (init_start > 0 && init_end > init_start) { field_val = js_eval_str(js, &source[init_start], init_end - init_start); field_val = resolveprop(js, field_val); } jsval_t set_res = setprop(js, target_this, fname, field_val); if (is_err(set_res)) { js->current_func = saved_func; pop_call_frame(); return set_res; } } skip_fields: if (is_async) { res = start_async_in_coroutine(js, code_str, fnlen, closure_scope, bound_args, bound_argc); pop_call_frame(); } else { res = call_js_internal_nfe(js, code_str, fnlen, closure_scope, bound_args, bound_argc, nfe_name_val, func); pop_call_frame(); } js->current_func = saved_func; } } } else { res = call_c(js, (jsval_t(*)(struct js *, jsval_t *, int)) vdata(func)); } js->code = code, js->clen = clen, js->pos = pos; js->flags = (flags & ~F_THROW) | (js->flags & F_THROW); js->tok = tok, js->nogc = nogc; js->consumed = 1; return res; } static jsval_t js_call_toString(struct js *js, jsval_t value) { jsoff_t ts_off = lkp(js, value, "toString", 8); if (ts_off == 0) ts_off = lkp_proto(js, value, "toString", 8); if (ts_off == 0) goto fallback; jsval_t ts_func = resolveprop(js, mkval(T_PROP, ts_off)); uint8_t ft = vtype(ts_func); if (ft != T_FUNC && ft != T_CFUNC) goto fallback; jsval_t saved_this = js->this_val; js->this_val = value; jsval_t result; if (ft == T_CFUNC) { result = ((jsval_t (*)(struct js *, jsval_t *, int))vdata(ts_func))(js, NULL, 0); } else { jsval_t func_obj = mkval(T_OBJ, vdata(ts_func)); jsoff_t code_off = lkp_interned(js, func_obj, INTERN_CODE, 6); if (code_off == 0) goto restore_fallback; jsval_t code_val = resolveprop(js, mkval(T_PROP, code_off)); if (vtype(code_val) != T_STR) goto restore_fallback; jsoff_t scope_off = lkp_interned(js, func_obj, INTERN_SCOPE, 7); jsval_t closure_scope = scope_off ? resolveprop(js, mkval(T_PROP, scope_off)) : js->scope; jsoff_t fnlen, fnoff = vstr(js, code_val, &fnlen); const char *code_str = (const char *)&js->mem[fnoff]; result = call_js(js, code_str, fnlen, closure_scope); } js->this_val = saved_this; if (vtype(result) == T_STR) return result; uint8_t rt = vtype(result); if (rt != T_OBJ && rt != T_ARR && rt != T_FUNC) { char buf[256]; size_t len = tostr(js, result, buf, sizeof(buf)); return js_mkstr(js, buf, len); } restore_fallback: js->this_val = saved_this; fallback:; char buf[4096]; size_t len = tostr(js, value, buf, sizeof(buf)); return js_mkstr(js, buf, len); } static jsval_t do_op(struct js *js, uint8_t op, jsval_t lhs, jsval_t rhs) { if (js->flags & F_NOEXEC) return 0; jsval_t l = resolveprop(js, lhs), r = resolveprop(js, rhs); setlwm(js); if (is_err(l)) return l; if (is_err(r)) return r; if (is_assign(op) && vtype(lhs) != T_PROP && vtype(lhs) != T_PROPREF) { if (!(js->flags & F_STRICT) && vtype(lhs) == T_UNDEF) return r; if (!(js->flags & F_STRICT) && vtype(lhs) == T_CODEREF && op == TOK_ASSIGN) { jsoff_t id_off = coderefoff(lhs); jsoff_t id_len = codereflen(lhs); jsval_t global_scope = js->scope; while (vdata(upper(js, global_scope)) != 0) { global_scope = upper(js, global_scope); } jsval_t key = js_mkstr(js, &js->code[id_off], id_len); if (is_err(key)) return key; jsval_t prop = setprop(js, global_scope, key, r); if (is_err(prop)) return prop; return r; } return js_mkerr(js, "bad lhs"); } switch (op) { case TOK_TYPEOF: { const char *ts = typestr(vtype(r)); return js_mkstr(js, ts, strlen(ts)); } case TOK_VOID: return js_mkundef(); case TOK_INSTANCEOF: return do_instanceof(js, l, r); case TOK_IN: return do_in(js, l, r); case TOK_CALL: return do_call_op(js, l, r); case TOK_BRACKET: return do_bracket_op(js, l, rhs); case TOK_ASSIGN: return assign(js, lhs, r); case TOK_DOT: return do_dot_op(js, l, r); case TOK_OPTIONAL_CHAIN: return do_optional_chain_op(js, l, r); case TOK_POSTINC: { if (vtype(lhs) != T_PROP) return js_mkerr(js, "bad lhs for ++"); do_assign_op(js, TOK_PLUS_ASSIGN, lhs, tov(1)); return l; } case TOK_POSTDEC: { if (vtype(lhs) != T_PROP) return js_mkerr(js, "bad lhs for --"); do_assign_op(js, TOK_MINUS_ASSIGN, lhs, tov(1)); return l; } case TOK_NOT: return mkval(T_BOOL, !js_truthy(js, r)); case TOK_UMINUS: if (vtype(r) == T_BIGINT) return bigint_neg(js, r); break; case TOK_UPLUS: if (vtype(r) == T_BIGINT) return js_mkerr(js, "Cannot convert BigInt to number"); break; } if (is_assign(op)) return do_assign_op(js, op, lhs, r); if (op == TOK_SEQ || op == TOK_SNE) { bool eq = false; if (vtype(l) == vtype(r)) { if (vtype(l) == T_STR) { jsoff_t n1, off1 = vstr(js, l, &n1); jsoff_t n2, off2 = vstr(js, r, &n2); eq = n1 == n2 && memcmp(&js->mem[off1], &js->mem[off2], n1) == 0; } else if (vtype(l) == T_NUM) { eq = tod(l) == tod(r); } else if (vtype(l) == T_BOOL) { eq = vdata(l) == vdata(r); } else if (vtype(l) == T_BIGINT) { eq = bigint_compare(js, l, r) == 0; } else { eq = vdata(l) == vdata(r); } } return mkval(T_BOOL, op == TOK_SEQ ? eq : !eq); } if (op == TOK_EQ || op == TOK_NE) { bool eq = false; if ((vtype(l) == T_NULL && vtype(r) == T_NULL) || (vtype(l) == T_UNDEF && vtype(r) == T_UNDEF)) { eq = true; } else if ((vtype(l) == T_UNDEF && vtype(r) == T_NULL) || (vtype(l) == T_NULL && vtype(r) == T_UNDEF)) { eq = true; } else if (vtype(l) == T_NULL || vtype(r) == T_NULL || vtype(l) == T_UNDEF || vtype(r) == T_UNDEF) { eq = false; } else if (vtype(l) == vtype(r)) { if (vtype(l) == T_STR) { jsoff_t n1, off1 = vstr(js, l, &n1); jsoff_t n2, off2 = vstr(js, r, &n2); eq = n1 == n2 && memcmp(&js->mem[off1], &js->mem[off2], n1) == 0; } else if (vtype(l) == T_NUM) { eq = tod(l) == tod(r); } else if (vtype(l) == T_BOOL) { eq = vdata(l) == vdata(r); } else if (vtype(l) == T_BIGINT) { eq = bigint_compare(js, l, r) == 0; } else { eq = vdata(l) == vdata(r); } } else if ((vtype(l) == T_BIGINT && vtype(r) == T_NUM) || (vtype(l) == T_NUM && vtype(r) == T_BIGINT)) { double num_val = vtype(l) == T_NUM ? tod(l) : tod(r); jsval_t bigint_val = vtype(l) == T_BIGINT ? l : r; if (isfinite(num_val) && num_val == trunc(num_val)) { bool neg = num_val < 0; if (neg) num_val = -num_val; char buf[64]; snprintf(buf, sizeof(buf), "%.0f", num_val); jsval_t num_as_bigint = mkbigint(js, buf, strlen(buf), neg); eq = bigint_compare(js, bigint_val, num_as_bigint) == 0; } } else if (vtype(l) == T_BOOL) { double lnum = vdata(l) ? 1.0 : 0.0; jsval_t result = do_op(js, op, tov(lnum), r); return result; } else if (vtype(r) == T_BOOL) { double rnum = vdata(r) ? 1.0 : 0.0; jsval_t result = do_op(js, op, l, tov(rnum)); return result; } else if ((vtype(l) == T_NUM && vtype(r) == T_STR) || (vtype(l) == T_STR && vtype(r) == T_NUM)) { double lnum = js_to_number(js, l); double rnum = js_to_number(js, r); eq = lnum == rnum; } return mkval(T_BOOL, op == TOK_EQ ? eq : !eq); } if (vtype(l) == T_BIGINT || vtype(r) == T_BIGINT) { if (vtype(l) != T_BIGINT || vtype(r) != T_BIGINT) { return js_mkerr(js, "Cannot mix BigInt and other types"); } switch (op) { case TOK_PLUS: return bigint_add(js, l, r); case TOK_MINUS: return bigint_sub(js, l, r); case TOK_MUL: return bigint_mul(js, l, r); case TOK_DIV: return bigint_div(js, l, r); case TOK_REM: return bigint_mod(js, l, r); case TOK_EXP: return bigint_exp(js, l, r); case TOK_LT: return mkval(T_BOOL, bigint_compare(js, l, r) < 0); case TOK_GT: return mkval(T_BOOL, bigint_compare(js, l, r) > 0); case TOK_LE: return mkval(T_BOOL, bigint_compare(js, l, r) <= 0); case TOK_GE: return mkval(T_BOOL, bigint_compare(js, l, r) >= 0); default: return js_mkerr(js, "unsupported BigInt operation"); } } if (op == TOK_PLUS && (vtype(l) == T_STR || vtype(r) == T_STR || vtype(l) == T_ARR || vtype(r) == T_ARR)) { jsval_t l_str = l, r_str = r; if (vtype(l) == T_ARR) { char buf[1024]; size_t len = array_to_string(js, l, buf, sizeof(buf)); l_str = js_mkstr(js, buf, len); if (is_err(l_str)) return l_str; } else if (vtype(l) != T_STR) { l_str = js_tostring_val(js, l); if (is_err(l_str)) return l_str; } if (vtype(r) == T_ARR) { char buf[1024]; size_t len = array_to_string(js, r, buf, sizeof(buf)); r_str = js_mkstr(js, buf, len); if (is_err(r_str)) return r_str; } else if (vtype(r) != T_STR) { r_str = js_tostring_val(js, r); if (is_err(r_str)) return r_str; } return do_string_op(js, op, l_str, r_str); } if (vtype(l) == T_STR && vtype(r) == T_STR) { if (op == TOK_PLUS || op == TOK_LT || op == TOK_LE || op == TOK_GT || op == TOK_GE) { return do_string_op(js, op, l, r); } } double a = 0.0, b = 0.0; if (vtype(l) == T_NUM) { a = tod(l); } else if (vtype(l) == T_STR) { jsoff_t slen, off = vstr(js, l, &slen); char *endptr; char temp[256]; size_t copy_len = slen < sizeof(temp) - 1 ? slen : sizeof(temp) - 1; memcpy(temp, &js->mem[off], copy_len); temp[copy_len] = '\0'; char *p = temp; while (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r') p++; if (*p == '\0') { a = 0.0; } else { a = strtod(p, &endptr); while (*endptr == ' ' || *endptr == '\t' || *endptr == '\n' || *endptr == '\r') endptr++; if (endptr == p || *endptr != '\0') a = NAN; } } else if (vtype(l) == T_BOOL) { a = vdata(l) ? 1.0 : 0.0; } else if (vtype(l) == T_NULL) { a = 0.0; } else if (vtype(l) == T_UNDEF) { a = NAN; } else if (vtype(l) == T_ARR) { a = NAN; } else if (vtype(l) == T_OBJ) { jsoff_t vo_off = lkp_proto(js, l, "valueOf", 7); if (vo_off != 0) { jsval_t vo_fn = resolveprop(js, mkval(T_PROP, vo_off)); if (vtype(vo_fn) == T_FUNC || vtype(vo_fn) == T_CFUNC) { jsval_t saved_this = js->this_val; js->this_val = l; jsval_t prim = call_js_with_args(js, vo_fn, NULL, 0); js->this_val = saved_this; if (vtype(prim) == T_NUM) a = tod(prim); else a = NAN; } else a = NAN; } else a = NAN; } else { a = NAN; } if (vtype(r) == T_NUM) { b = tod(r); } else if (vtype(r) == T_STR) { jsoff_t slen, off = vstr(js, r, &slen); char *endptr; char temp[256]; size_t copy_len = slen < sizeof(temp) - 1 ? slen : sizeof(temp) - 1; memcpy(temp, &js->mem[off], copy_len); temp[copy_len] = '\0'; char *p = temp; while (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r') p++; if (*p == '\0') { b = 0.0; } else { b = strtod(p, &endptr); while (*endptr == ' ' || *endptr == '\t' || *endptr == '\n' || *endptr == '\r') endptr++; if (endptr == p || *endptr != '\0') b = NAN; } } else if (vtype(r) == T_BOOL) { b = vdata(r) ? 1.0 : 0.0; } else if (vtype(r) == T_NULL) { b = 0.0; } else if (vtype(r) == T_UNDEF) { b = NAN; } else if (vtype(r) == T_ARR) { b = NAN; } else if (vtype(r) == T_OBJ) { jsoff_t vo_off = lkp_proto(js, r, "valueOf", 7); if (vo_off != 0) { jsval_t vo_fn = resolveprop(js, mkval(T_PROP, vo_off)); if (vtype(vo_fn) == T_FUNC || vtype(vo_fn) == T_CFUNC) { jsval_t saved_this = js->this_val; js->this_val = r; jsval_t prim = call_js_with_args(js, vo_fn, NULL, 0); js->this_val = saved_this; if (vtype(prim) == T_NUM) b = tod(prim); else b = NAN; } else b = NAN; } else b = NAN; } else { b = NAN; } switch (op) { case TOK_DIV: return tov(a / b); case TOK_REM: return tov(a - b * ((double) (long) (a / b))); case TOK_MUL: return tov(a * b); case TOK_PLUS: return tov(a + b); case TOK_MINUS: return tov(a - b); case TOK_EXP: return tov(pow(a, b)); case TOK_XOR: return tov((double)(js_to_int32(a) ^ js_to_int32(b))); case TOK_AND: return tov((double)(js_to_int32(a) & js_to_int32(b))); case TOK_OR: return tov((double)(js_to_int32(a) | js_to_int32(b))); case TOK_UMINUS: return tov(-b); case TOK_UPLUS: return tov(b); case TOK_TILDA: return tov((double)(~js_to_int32(b))); case TOK_SHL: return tov((double)(js_to_int32(a) << (js_to_uint32(b) & 0x1f))); case TOK_SHR: return tov((double)(js_to_int32(a) >> (js_to_uint32(b) & 0x1f))); case TOK_ZSHR: return tov((double)(js_to_uint32(a) >> (js_to_uint32(b) & 0x1f))); case TOK_DOT: return do_dot_op(js, l, r); case TOK_OPTIONAL_CHAIN: return do_optional_chain_op(js, l, r); case TOK_LT: return mkval(T_BOOL, a < b); case TOK_LE: return mkval(T_BOOL, a <= b); case TOK_GT: return mkval(T_BOOL, a > b); case TOK_GE: return mkval(T_BOOL, a >= b); default: return js_mkerr(js, "unknown op %d", (int) op); } } static jsval_t js_template_literal(struct js *js) { uint8_t *in = (uint8_t *) &js->code[js->toff]; size_t template_len = js->tlen; size_t n = 1; jsval_t parts[64]; int part_count = 0; while (n < template_len - 1 && part_count < 64) { size_t part_start = n; while (n < template_len - 1) { if (in[n] == '\\' && n + 1 < template_len - 1) { n += 2; continue; } if (in[n] == '$' && n + 1 < template_len - 1 && in[n + 1] == '{') { break; } n++; } if (n > part_start || (n == part_start && (n >= template_len - 1 || in[n] != '$'))) { size_t part_len = n - part_start; uint8_t *out = &js->mem[js->brk + sizeof(jsoff_t)]; size_t out_len = 0; if (js->brk + sizeof(jsoff_t) + part_len > js->size) return js_mkerr(js, "oom"); for (size_t i = part_start; i < n; i++) { if (in[i] == '\\' && i + 1 < n) { i++; if (in[i] == 'n') out[out_len++] = '\n'; else if (in[i] == 't') out[out_len++] = '\t'; else if (in[i] == 'r') out[out_len++] = '\r'; else if (in[i] == '\\') out[out_len++] = '\\'; else if (in[i] == '`') out[out_len++] = '`'; else out[out_len++] = in[i]; } else { out[out_len++] = in[i]; } } parts[part_count++] = js_mkstr(js, NULL, out_len); } if (n < template_len - 1 && in[n] == '$' && in[n + 1] == '{') { n += 2; size_t expr_start = n; int brace_count = 1; while (n < template_len - 1 && brace_count > 0) { if (in[n] == '{') brace_count++; else if (in[n] == '}') brace_count--; if (brace_count > 0) n++; } if (brace_count != 0) return js_mkerr_typed(js, JS_ERR_SYNTAX, "unclosed ${"); jsval_t expr_result = js_eval_str(js, (const char *)&in[expr_start], n - expr_start); if (is_err(expr_result)) return expr_result; expr_result = resolveprop(js, expr_result); if (vtype(expr_result) != T_STR) { const char *str = js_str(js, expr_result); expr_result = js_mkstr(js, str, strlen(str)); } parts[part_count++] = expr_result; n++; } } if (part_count == 0) return js_mkstr(js, "", 0); if (part_count == 1) return parts[0]; size_t total_len = 0; for (int i = 0; i < part_count; i++) { if (vtype(parts[i]) == T_STR) { total_len += vstrlen(js, parts[i]); } } jsval_t result = js_mkstr(js, NULL, total_len); if (is_err(result)) return result; jsoff_t result_len, result_off = vstr(js, result, &result_len); size_t pos = 0; for (int i = 0; i < part_count; i++) { if (vtype(parts[i]) == T_STR) { jsoff_t part_len, part_off = vstr(js, parts[i], &part_len); memmove(&js->mem[result_off + pos], &js->mem[part_off], part_len); pos += part_len; } } return result; } static jsval_t js_tagged_template(struct js *js, jsval_t tag_func) { if (js->flags & F_NOEXEC) return js_mkundef(); js_parse_state_t saved; JS_SAVE_STATE(js, saved); uint8_t *in = (uint8_t *) &js->code[js->toff]; size_t template_len = js->tlen; jsval_t strings[64], values[64]; int string_count = 0, value_count = 0; size_t n = 1; while (n < template_len - 1) { size_t part_start = n; while (n < template_len - 1 && !(in[n] == '$' && n + 1 < template_len - 1 && in[n + 1] == '{')) { if (in[n] == '\\' && n + 1 < template_len - 1) n += 2; else n++; } uint8_t *out = &js->mem[js->brk + sizeof(jsoff_t)]; size_t out_len = 0; if (js->brk + sizeof(jsoff_t) + (n - part_start) > js->size) return js_mkerr(js, "oom"); for (size_t i = part_start; i < n; i++) { if (in[i] == '\\' && i + 1 < n) { i++; if (in[i] == 'n') out[out_len++] = '\n'; else if (in[i] == 't') out[out_len++] = '\t'; else if (in[i] == 'r') out[out_len++] = '\r'; else if (in[i] == '\\') out[out_len++] = '\\'; else if (in[i] == '`') out[out_len++] = '`'; else out[out_len++] = in[i]; } else { out[out_len++] = in[i]; } } strings[string_count++] = js_mkstr(js, NULL, out_len); if (n >= template_len - 1 || in[n] != '$') break; n += 2; int brace_count = 1; size_t expr_start = n; while (n < template_len - 1 && brace_count > 0) { if (in[n] == '{') brace_count++; else if (in[n] == '}') brace_count--; if (brace_count > 0) n++; } if (brace_count != 0) return js_mkerr_typed(js, JS_ERR_SYNTAX, "unclosed ${"); jsval_t expr_result = js_eval_str(js, (const char *)&in[expr_start], n - expr_start); if (is_err(expr_result)) return expr_result; expr_result = resolveprop(js, expr_result); values[value_count++] = expr_result; n++; } jsval_t strings_arr = mkarr(js); for (int i = 0; i < string_count; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); setprop(js, strings_arr, js_mkstr(js, idx, strlen(idx)), strings[i]); } setprop(js, strings_arr, js_mkstr(js, "length", 6), tov((double)string_count)); strings_arr = mkval(T_ARR, vdata(strings_arr)); jsval_t args[65]; args[0] = strings_arr; for (int i = 0; i < value_count; i++) { args[i + 1] = values[i]; } uint8_t saved_flags = js->flags; jsval_t result = call_js_with_args(js, tag_func, args, 1 + value_count); JS_RESTORE_STATE(js, saved); js->flags = saved_flags; js->consumed = 1; return result; } static jsval_t js_str_literal(struct js *js) { uint8_t *in = (uint8_t *) &js->code[js->toff]; uint8_t *out = &js->mem[js->brk + sizeof(jsoff_t)]; size_t n1 = 0, n2 = 0; if (js->brk + sizeof(jsoff_t) + js->tlen > js->size) return js_mkerr(js, "oom"); while (n2++ + 2 < js->tlen) { if (in[n2] == '\\') { if (in[n2 + 1] == in[0]) { out[n1++] = in[0]; } else if (in[n2 + 1] == 'n') { out[n1++] = '\n'; } else if (in[n2 + 1] == 't') { out[n1++] = '\t'; } else if (in[n2 + 1] == 'r') { out[n1++] = '\r'; } else if (in[n2 + 1] == '0' && !(in[n2 + 2] >= '0' && in[n2 + 2] <= '7')) { out[n1++] = '\0'; } else if (in[n2 + 1] >= '0' && in[n2 + 1] <= '7') { if (js->flags & F_STRICT) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "octal escape sequences are not allowed in strict mode"); } int val = in[n2 + 1] - '0'; int extra = 0; if (in[n2 + 2] >= '0' && in[n2 + 2] <= '7') { val = val * 8 + (in[n2 + 2] - '0'); extra++; if (in[n2 + 3] >= '0' && in[n2 + 3] <= '7' && val * 8 + (in[n2 + 3] - '0') <= 255) { val = val * 8 + (in[n2 + 3] - '0'); extra++; } } n2 += extra; out[n1++] = (uint8_t)val; } else if (in[n2 + 1] == 'v') { out[n1++] = '\v'; } else if (in[n2 + 1] == 'f') { out[n1++] = '\f'; } else if (in[n2 + 1] == 'b') { out[n1++] = '\b'; } else if (in[n2 + 1] == 'x' && is_xdigit(in[n2 + 2]) && is_xdigit(in[n2 + 3])) { out[n1++] = (uint8_t) ((unhex(in[n2 + 2]) << 4U) | unhex(in[n2 + 3])); n2 += 2; } else if (in[n2 + 1] == 'u' && in[n2 + 2] == '{') { uint32_t cp = 0; size_t i = n2 + 3; while (i < js->tlen && is_xdigit(in[i])) { cp = (cp << 4) | unhex(in[i]); i++; } if (in[i] == '}') { if (cp < 0x80) { out[n1++] = (uint8_t) cp; } else if (cp < 0x800) { out[n1++] = (uint8_t) (0xC0 | (cp >> 6)); out[n1++] = (uint8_t) (0x80 | (cp & 0x3F)); } else if (cp < 0x10000) { out[n1++] = (uint8_t) (0xE0 | (cp >> 12)); out[n1++] = (uint8_t) (0x80 | ((cp >> 6) & 0x3F)); out[n1++] = (uint8_t) (0x80 | (cp & 0x3F)); } else { out[n1++] = (uint8_t) (0xF0 | (cp >> 18)); out[n1++] = (uint8_t) (0x80 | ((cp >> 12) & 0x3F)); out[n1++] = (uint8_t) (0x80 | ((cp >> 6) & 0x3F)); out[n1++] = (uint8_t) (0x80 | (cp & 0x3F)); } n2 = i; } else { out[n1++] = in[n2 + 1]; } } else if (in[n2 + 1] == 'u' && is_xdigit(in[n2 + 2]) && is_xdigit(in[n2 + 3]) && is_xdigit(in[n2 + 4]) && is_xdigit(in[n2 + 5])) { uint32_t cp = (unhex(in[n2 + 2]) << 12U) | (unhex(in[n2 + 3]) << 8U) | (unhex(in[n2 + 4]) << 4U) | unhex(in[n2 + 5]); if (cp < 0x80) { out[n1++] = (uint8_t) cp; } else if (cp < 0x800) { out[n1++] = (uint8_t) (0xC0 | (cp >> 6)); out[n1++] = (uint8_t) (0x80 | (cp & 0x3F)); } else { out[n1++] = (uint8_t) (0xE0 | (cp >> 12)); out[n1++] = (uint8_t) (0x80 | ((cp >> 6) & 0x3F)); out[n1++] = (uint8_t) (0x80 | (cp & 0x3F)); } n2 += 4; } else if (in[n2 + 1] == '\\') { out[n1++] = '\\'; } else { out[n1++] = in[n2 + 1]; } n2++; } else { out[n1++] = ((uint8_t *) js->code)[js->toff + n2]; } } return js_mkstr(js, NULL, n1); } static jsval_t js_bigint_literal(struct js *js) { const char *start = &js->code[js->toff]; size_t len = js->tlen - 1; while (len > 1 && start[0] == '0') { start++; len--; } bool neg = false; if (len > 0 && start[0] == '-') { neg = true; start++; len--; } return mkbigint(js, start, len, neg); } static jsval_t js_arr_destruct_assign(struct js *js) { uint8_t exe = !(js->flags & F_NOEXEC); js->consumed = 1; js_parse_state_t pattern_state; JS_SAVE_STATE(js, pattern_state); int depth = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LBRACKET) depth++; else if (js->tok == TOK_RBRACKET) depth--; if (depth > 0) js->consumed = 1; } js->consumed = 1; if (next(js) != TOK_ASSIGN) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "array destructuring requires assignment"); } js->consumed = 1; jsval_t v = js_expr(js); if (is_err(v)) return v; jsval_t arr = js_mkundef(); if (exe) { arr = resolveprop(js, v); if (vtype(arr) != T_ARR && vtype(arr) != T_STR) { return js_mkerr(js, "cannot array destructure non-iterable"); } } js_parse_state_t end_state; JS_SAVE_STATE(js, end_state); JS_RESTORE_STATE(js, pattern_state); int index = 0; while (next(js) != TOK_RBRACKET && next(js) != TOK_EOF) { if (next(js) == TOK_COMMA) { js->consumed = 1; index++; continue; } bool is_rest = false; if (next(js) == TOK_REST) { is_rest = true; js->consumed = 1; } if (next(js) != TOK_IDENTIFIER) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "identifier expected in array destructuring"); } jsoff_t var_off = js->toff, var_len = js->tlen; js->consumed = 1; jsoff_t default_off = 0, default_len = 0; if (!is_rest && next(js) == TOK_ASSIGN) { js->consumed = 1; default_off = js->pos; uint8_t sf = js->flags; js->flags |= F_NOEXEC; jsval_t r = js_expr(js); js->flags = sf; if (is_err(r)) return r; default_len = js->pos - default_off; } if (exe) { const char *var_name = &js->code[var_off]; jsval_t prop_val; if (is_rest) { jsval_t rest_arr = js_mkarr(js); if (is_err(rest_arr)) return rest_arr; jsoff_t total_len = vtype(arr) == T_STR ? 0 : arr_length(js, arr); if (vtype(arr) == T_STR) { jsoff_t slen; vstr(js, arr, &slen); total_len = slen; } for (jsoff_t i = index; i < total_len; i++) { jsval_t elem; if (vtype(arr) == T_STR) { jsoff_t slen, soff = vstr(js, arr, &slen); elem = js_mkstr(js, (char *)&js->mem[soff + i], 1); } else { elem = arr_get(js, arr, i); } js_arr_push(js, rest_arr, elem); } prop_val = rest_arr; } else { if (vtype(arr) == T_STR) { jsoff_t slen, soff = vstr(js, arr, &slen); if ((jsoff_t)index < slen) { prop_val = js_mkstr(js, (char *)&js->mem[soff + index], 1); } else { prop_val = js_mkundef(); } } else { prop_val = arr_get(js, arr, index); } if (vtype(prop_val) == T_UNDEF && default_len > 0) { prop_val = js_eval_slice(js, default_off, default_len); if (is_err(prop_val)) return prop_val; prop_val = resolveprop(js, prop_val); } } jsoff_t existing = lkp(js, js->scope, var_name, var_len); if (existing != 0) { jsval_t res = setprop(js, js->scope, js_mkstr(js, var_name, var_len), prop_val); if (is_err(res)) return res; } else { jsval_t global_scope = js->scope; while (vdata(upper(js, global_scope)) != 0) { global_scope = upper(js, global_scope); } jsval_t res = setprop(js, global_scope, js_mkstr(js, var_name, var_len), prop_val); if (is_err(res)) return res; } } index++; if (next(js) == TOK_RBRACKET) break; EXPECT(TOK_COMMA, ); } JS_RESTORE_STATE(js, end_state); return v; } static jsval_t js_arr_literal(struct js *js); static jsval_t js_arr_or_destruct(struct js *js) { jsoff_t saved_pos = js->pos; uint8_t saved_tok = js->tok; uint8_t saved_consumed = js->consumed; uint8_t saved_flags = js->flags; js->flags |= F_NOEXEC; js->consumed = 1; int depth = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LBRACKET) depth++; else if (js->tok == TOK_RBRACKET) depth--; if (depth > 0) js->consumed = 1; } js->consumed = 1; bool is_destruct = (next(js) == TOK_ASSIGN); js->pos = saved_pos; js->tok = saved_tok; js->consumed = saved_consumed; js->flags = saved_flags; if (is_destruct) { return js_arr_destruct_assign(js); } return js_arr_literal(js); } static jsval_t js_arr_literal(struct js *js) { uint8_t exe = !(js->flags & F_NOEXEC); jsval_t arr = exe ? mkarr(js) : js_mkundef(); if (is_err(arr)) return arr; js->consumed = 1; jsoff_t idx = 0; while (next(js) != TOK_RBRACKET) { if (next(js) == TOK_COMMA) { idx++; js->consumed = 1; continue; } bool is_spread = (next(js) == TOK_REST); if (is_spread) js->consumed = 1; jsval_t val = js_expr(js); if (!exe) goto next_elem; if (is_err(val)) return val; jsval_t resolved = resolveprop(js, val); if (!is_spread) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t res = setprop(js, arr, key, resolved); if (is_err(res)) return res; idx++; goto next_elem; } uint8_t t = vtype(resolved); if (t != T_ARR && t != T_STR) goto next_elem; if (t == T_STR) { jsoff_t slen, soff = vstr(js, resolved, &slen); for (jsoff_t i = 0; i < slen; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t ch = js_mkstr(js, (char *)&js->mem[soff + i], 1); setprop(js, arr, key, ch); idx++; } goto next_elem; } jsoff_t len = arr_length(js, resolved); for (jsoff_t i = 0; i < len; i++) { char src_idx[16], dst_idx[16]; snprintf(src_idx, sizeof(src_idx), "%u", (unsigned)i); snprintf(dst_idx, sizeof(dst_idx), "%u", (unsigned)idx); jsval_t key = js_mkstr(js, src_idx, strlen(src_idx)); jsoff_t prop_off = lkp(js, resolved, (char *)&js->mem[(jsoff_t)vdata(key) + sizeof(jsoff_t)], strlen(src_idx)); jsval_t elem = (prop_off != 0) ? resolveprop(js, mkval(T_PROP, prop_off)) : js_mkundef(); setprop(js, arr, js_mkstr(js, dst_idx, strlen(dst_idx)), elem); idx++; } next_elem: if (next(js) == TOK_RBRACKET) break; EXPECT(TOK_COMMA, ); } EXPECT(TOK_RBRACKET, ); if (exe) { jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double)idx); jsval_t res = setprop(js, arr, len_key, len_val); if (is_err(res)) return res; arr = mkval(T_ARR, vdata(arr)); } return arr; } static jsval_t js_regex_literal(struct js *js) { jsoff_t start = js->pos; jsoff_t pattern_start = start; bool in_class = false; while (js->pos < js->clen) { char c = js->code[js->pos]; if (c == '\\' && js->pos + 1 < js->clen) { js->pos += 2; continue; } if (c == '[') in_class = true; else if (c == ']') in_class = false; else if (c == '/' && !in_class) break; js->pos++; } if (js->pos >= js->clen || js->code[js->pos] != '/') { return js_mkerr_typed(js, JS_ERR_SYNTAX, "unterminated regex"); } jsoff_t pattern_end = js->pos; js->pos++; jsoff_t flags_start = js->pos; while (js->pos < js->clen) { char c = js->code[js->pos]; if (c == 'g' || c == 'i' || c == 'm' || c == 's' || c == 'u' || c == 'y') { js->pos++; } else { break; } } jsoff_t flags_end = js->pos; if (js->flags & F_NOEXEC) return js_mkundef(); jsval_t pattern = js_mkstr(js, &js->code[pattern_start], pattern_end - pattern_start); jsval_t flags = js_mkstr(js, &js->code[flags_start], flags_end - flags_start); jsval_t regexp_obj = mkobj(js, 0); jsval_t regexp_proto = get_ctor_proto(js, "RegExp", 6); if (vtype(regexp_proto) == T_OBJ) set_proto(js, regexp_obj, regexp_proto); setprop(js, regexp_obj, js_mkstr(js, "source", 6), pattern); setprop(js, regexp_obj, js_mkstr(js, "flags", 5), flags); jsoff_t flen = flags_end - flags_start; const char *fstr = &js->code[flags_start]; bool global = false, ignoreCase = false, multiline = false, dotAll = false, sticky = false; for (jsoff_t i = 0; i < flen; i++) { if (fstr[i] == 'g') global = true; if (fstr[i] == 'i') ignoreCase = true; if (fstr[i] == 'm') multiline = true; if (fstr[i] == 's') dotAll = true; if (fstr[i] == 'y') sticky = true; } setprop(js, regexp_obj, js_mkstr(js, "global", 6), mkval(T_BOOL, global ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "ignoreCase", 10), mkval(T_BOOL, ignoreCase ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "multiline", 9), mkval(T_BOOL, multiline ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "dotAll", 6), mkval(T_BOOL, dotAll ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "sticky", 6), mkval(T_BOOL, sticky ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "lastIndex", 9), tov(0)); return regexp_obj; } static jsval_t js_obj_literal(struct js *js) { uint8_t exe = !(js->flags & F_NOEXEC); jsval_t obj = exe ? mkobj(js, 0) : js_mkundef(); if (is_err(obj)) return obj; if (exe) { jsval_t object_proto = get_ctor_proto(js, "Object", 6); if (vtype(object_proto) == T_OBJ) set_proto(js, obj, object_proto); } js->consumed = 1; while (next(js) != TOK_RBRACE) { jsval_t key = 0; jsoff_t id_off = 0, id_len = 0; bool is_computed = false; if (js->tok == TOK_REST) { js->consumed = 1; jsval_t spread_expr = js_expr(js); if (is_err(spread_expr)) return spread_expr; if (!exe) goto spread_next; jsval_t spread_obj = resolveprop(js, spread_expr); uint8_t st = vtype(spread_obj); if (st != T_OBJ && st != T_ARR && st != T_FUNC) goto spread_next; jsval_t src_obj = (st == T_OBJ) ? spread_obj : mkval(T_OBJ, vdata(spread_obj)); jsoff_t next_prop = loadoff(js, (jsoff_t) vdata(src_obj)) & ~(3U | CONSTMASK | ARRMASK); while (next_prop < js->brk && next_prop != 0) { jsoff_t koff = loadoff(js, next_prop + (jsoff_t) sizeof(next_prop)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *prop_key = (char *) &js->mem[koff + sizeof(koff)]; jsval_t prop_val = loadval(js, next_prop + (jsoff_t) (sizeof(next_prop) + sizeof(koff))); next_prop = loadoff(js, next_prop) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(prop_key, klen)) continue; jsval_t key_str = js_mkstr(js, prop_key, klen); setprop(js, obj, key_str, prop_val); } spread_next: if (next(js) == TOK_RBRACE) break; EXPECT(TOK_COMMA, ); continue; } bool is_getter = false, is_setter = false; if (js->tok == TOK_IDENTIFIER) { bool is_get = (js->tlen == 3 && memcmp(js->code + js->toff, "get", 3) == 0); bool is_set = (js->tlen == 3 && memcmp(js->code + js->toff, "set", 3) == 0); if (is_get || is_set) { jsoff_t saved_pos = js->pos; uint8_t saved_tok = js->tok; uint8_t saved_consumed = js->consumed; jsoff_t saved_toff = js->toff; jsoff_t saved_tlen = js->tlen; js->consumed = 1; uint8_t peek = next(js); if (peek == TOK_IDENTIFIER || peek == TOK_STRING || peek == TOK_NUMBER || peek == TOK_LBRACKET) { is_getter = is_get; is_setter = is_set; if (peek == TOK_IDENTIFIER) { id_off = js->toff; id_len = js->tlen; if (exe) key = js_mkstr_ident(js, js->code + js->toff, js->tlen); } else if (peek == TOK_STRING) { id_off = js->toff; id_len = js->tlen; if (exe) key = js_str_literal(js); } else if (peek == TOK_NUMBER) { id_off = js->toff; id_len = js->tlen; if (exe) { double num = strtod(js->code + js->toff, NULL); char buf[64]; size_t n = strnum(tov(num), buf, sizeof(buf)); key = js_mkstr(js, buf, n); } } else if (peek == TOK_LBRACKET) { is_computed = true; js->consumed = 1; jsval_t key_expr = js_expr(js); if (is_err(key_expr)) return key_expr; if (exe) { jsval_t resolved_key = resolveprop(js, key_expr); if (vtype(resolved_key) == T_STR) { key = resolved_key; } else { char buf[64]; size_t n = tostr(js, resolved_key, buf, sizeof(buf)); key = js_mkstr(js, buf, n); } if (is_err(key)) return key; } if (next(js) != TOK_RBRACKET) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "] expected after computed property name"); } } } else { js->pos = saved_pos; js->tok = saved_tok; js->consumed = saved_consumed; js->toff = saved_toff; js->tlen = saved_tlen; id_off = saved_toff; id_len = saved_tlen; if (exe) key = js_mkstr_ident(js, js->code + saved_toff, saved_tlen); } } else { id_off = js->toff; id_len = js->tlen; if (exe) key = js_mkstr_ident(js, js->code + js->toff, js->tlen); } } else if (js->tok == TOK_STRING) { if (exe) key = js_str_literal(js); } else if (js->tok == TOK_NUMBER) { if (exe) { double num = strtod(js->code + js->toff, NULL); char buf[64]; size_t n = strnum(tov(num), buf, sizeof(buf)); key = js_mkstr(js, buf, n); } } else if (js->tok == TOK_LBRACKET) { is_computed = true; js->consumed = 1; jsval_t key_expr = js_expr(js); if (is_err(key_expr)) return key_expr; if (exe) { jsval_t resolved_key = resolveprop(js, key_expr); if (vtype(resolved_key) == T_STR) { key = resolved_key; } else if (vtype(resolved_key) == T_SYMBOL) { char buf[64]; snprintf(buf, sizeof(buf), "__sym_%llu__", (unsigned long long)sym_get_id(resolved_key)); key = js_mkstr(js, buf, strlen(buf)); } else { char buf[64]; size_t n = tostr(js, resolved_key, buf, sizeof(buf)); key = js_mkstr(js, buf, n); } if (is_err(key)) return key; } if (next(js) != TOK_RBRACKET) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "] expected after computed property name"); } } else if (is_keyword_propname(js->tok)) { id_off = js->toff; id_len = js->tlen; if (exe) key = js_mkstr(js, js->code + js->toff, js->tlen); } else { return js_mkerr_typed(js, JS_ERR_SYNTAX, "parse error"); } js->consumed = 1; if (!is_computed && id_len > 0 && (next(js) == TOK_COMMA || next(js) == TOK_RBRACE)) { jsval_t val = lookup(js, js->code + id_off, id_len); if (exe) { if (is_err(val)) return val; if (is_err(key)) return key; jsval_t res = setprop(js, obj, key, resolveprop(js, val)); if (is_err(res)) return res; } } else if ( (is_getter || is_setter) || (!is_computed && id_len > 0 && next(js) == TOK_LPAREN) || (is_computed && next(js) == TOK_LPAREN) ) { uint8_t flags = js->flags; jsoff_t pos = js->pos - 1; js->consumed = 1; if (!parse_func_params(js, &flags, NULL)) { js->flags = flags; return js_mkerr_typed(js, JS_ERR_SYNTAX, "invalid parameters"); } EXPECT(TOK_RPAREN, js->flags = flags); EXPECT(TOK_LBRACE, js->flags = flags); js->consumed = 0; js->flags |= F_NOEXEC; jsval_t block_res = js_block(js, false); if (is_err(block_res)) { js->flags = flags; return block_res; } js->flags = flags; js->consumed = 1; if (exe) { jsval_t str = js_mkstr(js, &js->code[pos], js->pos - pos); jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); setprop(js, func_obj, code_key, str); jsval_t name_key = js_mkstr(js, "name", 4); setprop(js, func_obj, name_key, key); jsval_t scope_key = js_mkstr(js, "__scope", 7); setprop(js, func_obj, scope_key, js->scope); jsval_t val = mkval(T_FUNC, (unsigned long) vdata(func_obj)); if (is_getter || is_setter) { jsoff_t key_len; const char *key_str = NULL; if (vtype(key) == T_STR) { jsoff_t key_off = vstr(js, key, &key_len); key_str = (char *)&js->mem[key_off]; } if (key_str) { if (is_getter) { js_set_getter_desc(js, obj, key_str, key_len, val, JS_DESC_E | JS_DESC_C); } else { js_set_setter_desc(js, obj, key_str, key_len, val, JS_DESC_E | JS_DESC_C); } } } else { jsval_t res = setprop(js, obj, key, val); if (is_err(res)) return res; } } } else { EXPECT(TOK_COLON, ); jsval_t val = js_expr(js); if (exe) { if (is_err(val)) return val; if (is_err(key)) return key; jsval_t resolved_val = resolveprop(js, val); if (vtype(resolved_val) == T_FUNC) { jsval_t func_obj = mkval(T_OBJ, vdata(resolved_val)); jsoff_t name_prop = lkp(js, func_obj, "name", 4); if (name_prop == 0) { jsval_t name_key = js_mkstr(js, "name", 4); if (!is_err(name_key)) setprop(js, func_obj, name_key, key); } } jsval_t res = setprop(js, obj, key, resolved_val); if (is_err(res)) return res; } } if (next(js) == TOK_RBRACE) break; EXPECT(TOK_COMMA, ); } EXPECT(TOK_RBRACE, ); return obj; } static bool parse_func_params(struct js *js, uint8_t *flags, int *out_count) { int param_count = 0; int param_capacity = 16; const char **param_names = (const char **)ANT_GC_MALLOC(param_capacity * sizeof(char *)); size_t *param_lens = (size_t *)ANT_GC_MALLOC(param_capacity * sizeof(size_t)); if (!param_names || !param_lens) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "out of memory"); return false; } for (bool comma = false; next(js) != TOK_EOF; comma = true) { if (!comma && next(js) == TOK_RPAREN) break; bool is_rest = false; if (next(js) == TOK_REST) { is_rest = true; js->consumed = 1; next(js); } if (next(js) == TOK_LBRACE || next(js) == TOK_LBRACKET) { uint8_t open_tok = js->tok; uint8_t close_tok = (open_tok == TOK_LBRACE) ? TOK_RBRACE : TOK_RBRACKET; int depth = 1; js->consumed = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == open_tok) depth++; else if (js->tok == close_tok) depth--; if (depth > 0) js->consumed = 1; } js->consumed = 1; param_count++; if (next(js) == TOK_ASSIGN) { js->consumed = 1; int ddepth = 0; bool done = false; while (!done && next(js) != TOK_EOF) { uint8_t tok = next(js); if (ddepth == 0 && (tok == TOK_RPAREN || tok == TOK_COMMA)) { done = true; } else if (tok == TOK_LPAREN || tok == TOK_LBRACKET || tok == TOK_LBRACE) { ddepth++; js->consumed = 1; } else if (tok == TOK_RPAREN || tok == TOK_RBRACKET || tok == TOK_RBRACE) { ddepth--; js->consumed = 1; } else { js->consumed = 1; } } } if (is_rest && next(js) != TOK_RPAREN) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "rest parameter must be last"); return false; } if (next(js) == TOK_RPAREN) break; if (next(js) != TOK_COMMA) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "parse error"); return false; } js->consumed = 1; continue; } if (next(js) != TOK_IDENTIFIER) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "identifier expected"); return false; } const char *param_name = &js->code[js->toff]; size_t param_len = js->tlen; if ((js->flags & F_STRICT) && is_strict_restricted(param_name, param_len)) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot use '%.*s' as parameter name in strict mode", (int) param_len, param_name); return false; } if (js->flags & F_STRICT) { for (int i = 0; i < param_count; i++) { if (param_lens[i] == param_len && memcmp(param_names[i], param_name, param_len) == 0) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "duplicate parameter name '%.*s' in strict mode", (int) param_len, param_name); return false; } } } if (param_count >= param_capacity) { param_capacity *= 2; const char **new_names = (const char **)ANT_GC_MALLOC(param_capacity * sizeof(char *)); size_t *new_lens = (size_t *)ANT_GC_MALLOC(param_capacity * sizeof(size_t)); if (!new_names || !new_lens) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "out of memory"); return false; } memcpy(new_names, param_names, param_count * sizeof(char *)); memcpy(new_lens, param_lens, param_count * sizeof(size_t)); param_names = new_names; param_lens = new_lens; } param_names[param_count] = param_name; param_lens[param_count] = param_len; param_count++; js->consumed = 1; if (next(js) == TOK_ASSIGN) { js->consumed = 1; int depth = 0; bool done = false; while (!done && next(js) != TOK_EOF) { uint8_t tok = next(js); if (depth == 0 && (tok == TOK_RPAREN || tok == TOK_COMMA)) { done = true; } else if (tok == TOK_LPAREN || tok == TOK_LBRACKET || tok == TOK_LBRACE) { depth++; js->consumed = 1; } else if (tok == TOK_RPAREN || tok == TOK_RBRACKET || tok == TOK_RBRACE) { depth--; js->consumed = 1; } else { js->consumed = 1; } } } if (is_rest && next(js) != TOK_RPAREN) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "rest parameter must be last"); return false; } if (next(js) == TOK_RPAREN) break; if (next(js) != TOK_COMMA) { if (flags) js->flags = *flags; js_mkerr_typed(js, JS_ERR_SYNTAX, "parse error"); return false; } js->consumed = 1; } if (out_count) *out_count = param_count; return true; } static jsval_t js_func_literal(struct js *js, bool is_async) { uint8_t flags = js->flags; js->consumed = 1; jsoff_t name_off = 0, name_len = 0; if (next(js) == TOK_IDENTIFIER) { name_off = js->toff; name_len = js->tlen; js->consumed = 1; } EXPECT(TOK_LPAREN, js->flags = flags); jsoff_t pos = js->pos - 1; int param_count = 0; if (!parse_func_params(js, &flags, ¶m_count)) { js->flags = flags; return js_mkerr_typed(js, JS_ERR_SYNTAX, "invalid parameters"); } EXPECT(TOK_RPAREN, js->flags = flags); EXPECT(TOK_LBRACE, js->flags = flags); js->consumed = 0; js->flags |= F_NOEXEC; jsval_t res = js_block(js, false); if (is_err(res)) { js->flags = flags; return res; } js->flags = flags; jsval_t str = js_mkstr(js, &js->code[pos], js->pos - pos); js->consumed = 1; jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res2 = setprop(js, func_obj, code_key, str); if (is_err(res2)) return res2; jsval_t len_key = js_mkstr(js, "length", 6); if (is_err(len_key)) return len_key; jsval_t res_len = setprop(js, func_obj, len_key, tov(param_count)); if (is_err(res_len)) return res_len; js_set_descriptor(js, func_obj, "length", 6, JS_DESC_C); if (is_async) { jsval_t async_key = js_mkstr(js, "__async", 7); if (is_err(async_key)) return async_key; jsval_t res_async = setprop(js, func_obj, async_key, js_mktrue()); if (is_err(res_async)) return res_async; } if (name_len > 0) { jsval_t name_key = js_mkstr(js, "name", 4); if (is_err(name_key)) return name_key; jsval_t name_val = js_mkstr(js, &js->code[name_off], name_len); if (is_err(name_val)) return name_val; jsval_t res3 = setprop(js, func_obj, name_key, name_val); if (is_err(res3)) return res3; } if (!(flags & F_NOEXEC)) { jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; jsval_t res4 = setprop(js, func_obj, scope_key, js->scope); if (is_err(res4)) return res4; if (flags & F_STRICT) { jsval_t strict_key = js_mkstr(js, "__strict", 8); if (is_err(strict_key)) return strict_key; jsval_t res_strict = setprop(js, func_obj, strict_key, js_mktrue()); if (is_err(res_strict)) return res_strict; } } jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj)); jsval_t proto_setup = setup_func_prototype(js, func); if (is_err(proto_setup)) return proto_setup; return func; } #define RTL_BINOP(_f1, _f2, _cond) \ jsval_t res = _f1(js); \ while (!is_err(res) && (_cond)) { \ uint8_t op = js->tok; \ js->consumed = 1; \ jsval_t rhs = _f2(js); \ if (is_err(rhs)) return rhs; \ res = do_op(js, op, res, rhs); \ } \ return res; #define LTR_BINOP(_f, _cond) \ jsval_t res = _f(js); \ while (!is_err(res) && (_cond)) { \ uint8_t op = js->tok; \ js->consumed = 1; \ jsval_t rhs = _f(js); \ if (is_err(rhs)) return rhs; \ res = do_op(js, op, res, rhs); \ } \ return res; static jsval_t js_class_expr(struct js *js, bool is_expression); static jsval_t js_literal(struct js *js) { next(js); setlwm(js); if (js->maxcss > 0 && js->css > js->maxcss) return js_mkerr(js, "C stack"); js->consumed = 1; switch (js->tok) { case TOK_ERR: if ((js->flags & F_STRICT) && js->toff < js->clen && js->code[js->toff] == '0' && js->toff + 1 < js->clen && is_digit(js->code[js->toff + 1])) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "octal literals are not allowed in strict mode"); } return js_mkerr_typed(js, JS_ERR_SYNTAX, "parse error"); case TOK_NUMBER: return js->tval; case TOK_BIGINT: return js_bigint_literal(js); case TOK_STRING: return js_str_literal(js); case TOK_TEMPLATE: return js_template_literal(js); case TOK_LBRACE: return js_obj_literal(js); case TOK_LBRACKET: return js_arr_or_destruct(js); case TOK_DIV: return js_regex_literal(js); case TOK_CLASS: return js_class_expr(js, true); case TOK_FUNC: { uint8_t la = lookahead(js); if (la != TOK_LPAREN && la != TOK_IDENTIFIER) { return mkcoderef((jsoff_t) js->toff, (jsoff_t) js->tlen); } return js_func_literal(js, false); } case TOK_ASYNC: { js->consumed = 1; uint8_t next_tok = next(js); if (next_tok == TOK_FUNC) { return js_func_literal(js, true); } else if (next_tok == TOK_LPAREN) { jsoff_t paren_start = js->pos - 1; js->consumed = 1; jsoff_t saved_pos = js->pos; uint8_t saved_tok = js->tok; uint8_t saved_consumed = js->consumed; uint8_t saved_flags = js->flags; int paren_depth = 1; js->flags |= F_NOEXEC; while (paren_depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LPAREN) paren_depth++; else if (js->tok == TOK_RPAREN) paren_depth--; js->consumed = 1; } jsoff_t paren_end = js->pos; bool is_arrow = lookahead(js) == TOK_ARROW; js->pos = saved_pos; js->tok = saved_tok; js->consumed = saved_consumed; js->flags = saved_flags; if (is_arrow) { js->flags |= F_NOEXEC; while (next(js) != TOK_RPAREN && next(js) != TOK_EOF) { js->consumed = 1; } if (next(js) != TOK_RPAREN) return js_mkerr_typed(js, JS_ERR_SYNTAX, ") expected"); js->consumed = 1; js->flags = saved_flags; if (next(js) != TOK_ARROW) return js_mkerr_typed(js, JS_ERR_SYNTAX, "=> expected"); js->consumed = 1; return js_arrow_func(js, paren_start, paren_end, true); } return js_mkerr_typed(js, JS_ERR_SYNTAX, "async ( must be arrow function"); } else if (next_tok == TOK_IDENTIFIER) { jsoff_t id_start = js->toff; jsoff_t id_len = js->tlen; js->consumed = 1; if (next(js) == TOK_ARROW) { js->consumed = 1; char param_buf[256]; if (id_len + 3 > sizeof(param_buf)) return js_mkerr(js, "param too long"); param_buf[0] = '('; memcpy(param_buf + 1, &js->code[id_start], id_len); param_buf[id_len + 1] = ')'; param_buf[id_len + 2] = '\0'; uint8_t flags = js->flags; bool is_expr = next(js) != TOK_LBRACE; jsoff_t body_start = is_expr ? js->toff : js->pos; jsval_t body_result; if (is_expr) { js->flags |= F_NOEXEC; body_result = js_assignment(js); if (is_err(body_result)) { js->flags = flags; return body_result; } } else { body_start = js->toff; js->flags |= F_NOEXEC; js->consumed = 1; body_result = js_block(js, false); if (is_err(body_result)) { js->flags = flags; return body_result; } if (js->tok == TOK_RBRACE && js->consumed) { } else if (next(js) == TOK_RBRACE) js->consumed = 1; } js->flags = flags; jsoff_t body_end = js->pos; size_t fn_size = id_len + (body_end - body_start) + 64; char *fn_str = (char *) malloc(fn_size); if (!fn_str) return js_mkerr(js, "oom"); jsoff_t fn_pos = 0; memcpy(fn_str + fn_pos, param_buf, id_len + 2); fn_pos += id_len + 2; if (is_expr) { fn_str[fn_pos++] = '{'; memcpy(fn_str + fn_pos, "return ", 7); fn_pos += 7; size_t body_len = body_end - body_start; memcpy(fn_str + fn_pos, &js->code[body_start], body_len); fn_pos += body_len; fn_str[fn_pos++] = '}'; } else { size_t body_len = body_end - body_start; memcpy(fn_str + fn_pos, &js->code[body_start], body_len); fn_pos += body_len; } jsval_t str = js_mkstr(js, fn_str, fn_pos); free(fn_str); if (is_err(str)) return str; jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res = setprop(js, func_obj, code_key, str); if (is_err(res)) return res; jsval_t async_key = js_mkstr(js, "__async", 7); if (is_err(async_key)) return async_key; jsval_t res_async = setprop(js, func_obj, async_key, js_mktrue()); if (is_err(res_async)) return res_async; if (!(flags & F_NOEXEC)) { jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; jsval_t res2 = setprop(js, func_obj, scope_key, js->scope); if (is_err(res2)) return res2; } return mkval(T_FUNC, (unsigned long) vdata(func_obj)); } return mkcoderef((jsoff_t) id_start, (jsoff_t) id_len); } return js_mkerr_typed(js, JS_ERR_SYNTAX, "unexpected token after async"); } case TOK_NULL: return js_mknull(); case TOK_UNDEF: return js_mkundef(); case TOK_TRUE: return js_mktrue(); case TOK_FALSE: return js_mkfalse(); case TOK_THIS: return js->this_val; case TOK_WINDOW: case TOK_GLOBAL_THIS: return js_glob(js); case TOK_OF: case TOK_FOR: case TOK_WITH: case TOK_TYPEOF: case TOK_FROM: case TOK_VOID: case TOK_DELETE: case TOK_IMPORT: case TOK_IDENTIFIER: case TOK_CATCH: case TOK_TRY: case TOK_FINALLY: case TOK_IF: case TOK_ELSE: case TOK_WHILE: case TOK_DO: case TOK_RETURN: case TOK_BREAK: case TOK_CONTINUE: case TOK_VAR: case TOK_NEW: case TOK_THROW: case TOK_SWITCH: case TOK_CASE: case TOK_DEFAULT: case TOK_INSTANCEOF: case TOK_IN: case TOK_DEBUGGER: return mkcoderef((jsoff_t) js->toff, (jsoff_t) js->tlen); default: return js_mkerr_typed(js, JS_ERR_SYNTAX, "bad expr"); } } static jsval_t js_arrow_func(struct js *js, jsoff_t params_start, jsoff_t params_end, bool is_async) { uint8_t flags = js->flags; bool is_expr = next(js) != TOK_LBRACE; jsoff_t body_start, body_end_actual; jsval_t body_result; if (is_expr) { body_start = js->toff; js->flags |= F_NOEXEC; body_result = js_assignment(js); if (is_err(body_result)) { js->flags = flags; return body_result; } uint8_t tok = next(js); if (tok == TOK_RPAREN || tok == TOK_RBRACE || tok == TOK_SEMICOLON || tok == TOK_COMMA || tok == TOK_EOF) { body_end_actual = js->toff; } else { body_end_actual = js->pos; } } else { body_start = js->toff; js->flags |= F_NOEXEC; js->consumed = 1; body_result = js_block(js, false); if (is_err(body_result)) { js->flags = flags; return body_result; } if (js->tok == TOK_RBRACE && js->consumed) { body_end_actual = js->pos; } else if (next(js) == TOK_RBRACE) { body_end_actual = js->pos; js->consumed = 1; } else { body_end_actual = js->pos; } } js->flags = flags; size_t fn_size = (params_end - params_start) + (body_end_actual - body_start) + 32; char *fn_str = (char *) malloc(fn_size); if (!fn_str) return js_mkerr(js, "oom"); jsoff_t fn_pos = 0; size_t param_len = params_end - params_start; memcpy(fn_str + fn_pos, &js->code[params_start], param_len); fn_pos += param_len; if (is_expr) { fn_str[fn_pos++] = '{'; memcpy(fn_str + fn_pos, "return ", 7); fn_pos += 7; size_t body_len = body_end_actual - body_start; memcpy(fn_str + fn_pos, &js->code[body_start], body_len); fn_pos += body_len; fn_str[fn_pos++] = '}'; } else { size_t body_len = body_end_actual - body_start; memcpy(fn_str + fn_pos, &js->code[body_start], body_len); fn_pos += body_len; } jsval_t str = js_mkstr(js, fn_str, fn_pos); free(fn_str); if (is_err(str)) return str; jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res = setprop(js, func_obj, code_key, str); if (is_err(res)) return res; if (is_async) { jsval_t async_key = js_mkstr(js, "__async", 7); if (is_err(async_key)) return async_key; jsval_t res_async = setprop(js, func_obj, async_key, js_mktrue()); if (is_err(res_async)) return res_async; } if (!(flags & F_NOEXEC)) { jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; jsval_t res2 = setprop(js, func_obj, scope_key, js->scope); if (is_err(res2)) return res2; jsval_t this_key = js_mkstr(js, "__this", 6); if (is_err(this_key)) return this_key; jsval_t res3 = setprop(js, func_obj, this_key, js->this_val); if (is_err(res3)) return res3; } return mkval(T_FUNC, (unsigned long) vdata(func_obj)); } static jsval_t js_group(struct js *js) { if (next(js) == TOK_LPAREN) { jsoff_t paren_start = js->pos - 1; js->consumed = 1; jsoff_t saved_pos = js->pos; uint8_t saved_tok = js->tok; uint8_t saved_consumed = js->consumed; uint8_t saved_flags = js->flags; int paren_depth = 1; bool could_be_arrow = true; js->flags |= F_NOEXEC; while (paren_depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LPAREN) paren_depth++; else if (js->tok == TOK_RPAREN) paren_depth--; if (paren_depth > 0) { if (js->tok != TOK_IDENTIFIER && js->tok != TOK_COMMA && js->tok != TOK_REST && js->tok != TOK_ASSIGN && js->tok != TOK_NUMBER && js->tok != TOK_STRING && js->tok != TOK_TRUE && js->tok != TOK_FALSE && js->tok != TOK_NULL && js->tok != TOK_UNDEF && js->tok != TOK_LBRACKET && js->tok != TOK_RBRACKET && js->tok != TOK_LBRACE && js->tok != TOK_RBRACE && js->tok != TOK_DOT && js->tok != TOK_PLUS && js->tok != TOK_MINUS && js->tok != TOK_MUL && js->tok != TOK_DIV) { could_be_arrow = false; } } js->consumed = 1; } jsoff_t paren_end = js->pos; bool is_arrow = could_be_arrow && lookahead(js) == TOK_ARROW; js->pos = saved_pos; js->tok = saved_tok; js->consumed = saved_consumed; js->flags = saved_flags; if (is_arrow) { js->flags |= F_NOEXEC; while (next(js) != TOK_RPAREN && next(js) != TOK_EOF) { js->consumed = 1; } if (next(js) != TOK_RPAREN) return js_mkerr_typed(js, JS_ERR_SYNTAX, ") expected"); js->consumed = 1; js->flags = saved_flags; if (next(js) != TOK_ARROW) return js_mkerr_typed(js, JS_ERR_SYNTAX, "=> expected"); js->consumed = 1; return js_arrow_func(js, paren_start, paren_end, false); } else { jsval_t v = js_expr(js); if (is_err(v)) return v; while (next(js) == TOK_COMMA) { js->consumed = 1; v = js_expr(js); if (is_err(v)) return v; } if (next(js) != TOK_RPAREN) return js_mkerr_typed(js, JS_ERR_SYNTAX, ") expected"); js->consumed = 1; return v; } } else { return js_literal(js); } } static jsval_t js_call_dot(struct js *js) { jsval_t res = js_group(js); jsval_t obj = js_mkundef(); if (is_err(res)) return res; if (vtype(res) == T_CODEREF) { if (lookahead(js) == TOK_ARROW) return res; if (lookahead(js) == TOK_TEMPLATE) { jsval_t tag_func = lookup(js, &js->code[coderefoff(res)], codereflen(res)); if (is_err(tag_func)) return tag_func; if (!(js->flags & F_NOEXEC) && !is_err(tag_func)) tag_func = resolveprop(js, tag_func); js->consumed = 1; next(js); js->consumed = 1; jsval_t result = js_tagged_template(js, tag_func); return result; } if ((js->flags & F_STRICT) && is_eval_or_arguments(js, coderefoff(res), codereflen(res))) { uint8_t la = lookahead(js); if (la == TOK_ASSIGN || la == TOK_PLUS_ASSIGN || la == TOK_MINUS_ASSIGN || la == TOK_MUL_ASSIGN || la == TOK_DIV_ASSIGN || la == TOK_REM_ASSIGN || la == TOK_SHL_ASSIGN || la == TOK_SHR_ASSIGN || la == TOK_ZSHR_ASSIGN || la == TOK_AND_ASSIGN || la == TOK_XOR_ASSIGN || la == TOK_OR_ASSIGN || la == TOK_POSTINC || la == TOK_POSTDEC) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot modify eval or arguments in strict mode"); } } jsoff_t id_off = coderefoff(res); jsoff_t id_len = codereflen(res); jsoff_t saved_pos = js->pos; uint8_t saved_tok = js->tok; uint8_t saved_consumed = js->consumed; res = lookup(js, &js->code[id_off], id_len); if (is_err(res)) { if (!(js->flags & F_STRICT) && !(js->flags & F_NOEXEC)) { js->pos = saved_pos; js->tok = saved_tok; js->consumed = saved_consumed; uint8_t next_tok = next(js); if (next_tok == TOK_ASSIGN) { js->flags &= (uint8_t)~F_THROW; js->thrown_value = js_mkundef(); if (js->errmsg) js->errmsg[0] = '\0'; return mkcoderef(id_off, id_len); } } if (is_err(res)) return res; } } while (next(js) == TOK_LPAREN || next(js) == TOK_DOT || next(js) == TOK_OPTIONAL_CHAIN || next(js) == TOK_LBRACKET || next(js) == TOK_TEMPLATE) { if (js->tok == TOK_TEMPLATE) { if (vtype(res) == T_PROP) res = resolveprop(js, res); if (is_err(res)) return res; js->consumed = 1; return js_tagged_template(js, res); } else if (js->tok == TOK_DOT || js->tok == TOK_OPTIONAL_CHAIN) { uint8_t op = js->tok; js->consumed = 1; if (vtype(res) != T_PROP) { obj = res; } else { obj = resolveprop(js, res); } jsval_t prop_name; uint8_t nxt = next(js); if (nxt == TOK_IDENTIFIER || is_keyword_propname(nxt)) { js->consumed = 1; prop_name = mkcoderef((jsoff_t) js->toff, (jsoff_t) js->tlen); } else { prop_name = js_group(js); } if (op == TOK_OPTIONAL_CHAIN && (vtype(obj) == T_NULL || vtype(obj) == T_UNDEF)) { res = js_mkundef(); } else { res = do_op(js, op, res, prop_name); } } else if (js->tok == TOK_LBRACKET) { js->consumed = 1; if (vtype(res) != T_PROP && vtype(res) != T_PROPREF) { obj = res; } else { obj = resolveprop(js, res); } jsval_t idx = js_expr(js); if (is_err(idx)) return idx; if (next(js) != TOK_RBRACKET) return js_mkerr_typed(js, JS_ERR_SYNTAX, "] expected"); js->consumed = 1; res = do_op(js, TOK_BRACKET, res, idx); } else { jsval_t func_this = obj; if (vtype(obj) == T_UNDEF) { if (vtype(res) == T_PROPREF) { jsoff_t obj_off = propref_obj(res); func_this = mkval(T_OBJ, obj_off); } else func_this = js->this_val; } push_this(func_this); jsval_t params = js_call_params(js); if (is_err(params)) { pop_this(); return params; } res = do_op(js, TOK_CALL, res, params); pop_this(); obj = js_mkundef(); } } return res; } static jsval_t js_postfix(struct js *js) { jsval_t res = js_call_dot(js); if (is_err(res)) return res; next(js); if ((js->tok == TOK_POSTINC || js->tok == TOK_POSTDEC) && !js->had_newline) { js->consumed = 1; res = do_op(js, js->tok, res, 0); } return res; } static jsval_t js_unary(struct js *js) { if (next(js) == TOK_NEW) { js->consumed = 1; jsval_t obj = mkobj(js, 0); jsval_t saved_this = js->this_val; js->this_val = obj; jsval_t result = js_postfix(js); jsval_t constructed_obj = js->this_val; js->this_val = saved_this; if (vtype(result) == T_OBJ || vtype(result) == T_ARR || vtype(result) == T_PROMISE || vtype(result) == T_FUNC) return result; return constructed_obj; } else if (next(js) == TOK_DELETE) { js->consumed = 1; if ((js->flags & F_STRICT) && next(js) == TOK_IDENTIFIER) { jsoff_t id_pos = js->pos; uint8_t id_tok = js->tok; jsoff_t id_toff = js->toff; jsoff_t id_tlen = js->tlen; js->consumed = 1; uint8_t after = next(js); if (after != TOK_DOT && after != TOK_LBRACKET && after != TOK_OPTIONAL_CHAIN) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot delete unqualified identifier in strict mode"); } js->pos = id_pos; js->tok = id_tok; js->toff = id_toff; js->tlen = id_tlen; js->consumed = 0; } jsoff_t save_pos = js->pos; uint8_t save_tok = js->tok; js_parse_state_t saved_delete; JS_SAVE_STATE(js, saved_delete); uint8_t saved_delete_flags = js->flags; jsval_t operand = js_postfix(js); if (is_err(operand)) { JS_RESTORE_STATE(js, saved_delete); js->flags = saved_delete_flags & ~F_THROW; js->flags |= F_NOEXEC; js_postfix(js); js->flags = saved_delete_flags; return js_mktrue(); } if (js->flags & F_NOEXEC) return js_mktrue(); if (vtype(operand) == T_PROPREF) { jsoff_t obj_off = propref_obj(operand); jsoff_t key_off = propref_key(operand); jsval_t obj = mkval(T_OBJ, obj_off); jsval_t key = mkval(T_STR, key_off); jsoff_t len; const char *key_str = (const char *)&js->mem[vstr(js, key, &len)]; if (is_proxy(js, obj)) { jsval_t result = proxy_delete(js, obj, key_str, len); if (is_err(result)) return result; return js_truthy(js, result) ? js_mktrue() : js_mkfalse(); } jsoff_t frozen_off = lkp(js, obj, "__frozen__", 10); if (frozen_off != 0) { jsval_t frozen_val = resolveprop(js, mkval(T_PROP, frozen_off)); if (js_truthy(js, frozen_val)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot delete property of frozen object"); return js_mkfalse(); } } jsoff_t sealed_off = lkp(js, obj, "__sealed__", 10); if (sealed_off != 0) { jsval_t sealed_val = resolveprop(js, mkval(T_PROP, sealed_off)); if (js_truthy(js, sealed_val)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot delete property of sealed object"); return js_mkfalse(); } } jsoff_t prop_off = lkp(js, obj, key_str, len); if (prop_off == 0) return js_mktrue(); if (is_const_prop(js, prop_off)) { if (js->flags & F_STRICT) return js_mkerr_typed(js, JS_ERR_TYPE, "cannot delete non-configurable property"); return js_mkfalse(); } descriptor_entry_t *desc = lookup_descriptor(obj_off, key_str, len); if (desc && !desc->configurable) { if (js->flags & F_STRICT) return js_mkerr_typed(js, JS_ERR_TYPE, "cannot delete non-configurable property"); return js_mkfalse(); } jsoff_t first_prop = loadoff(js, obj_off) & ~(3U | CONSTMASK | GCMASK); if (first_prop == prop_off) { jsoff_t deleted_next = loadoff(js, prop_off) & ~(GCMASK | CONSTMASK); jsoff_t current = loadoff(js, obj_off); saveoff(js, obj_off, (deleted_next & ~3U) | (current & (GCMASK | CONSTMASK | 3U))); saveoff(js, prop_off, loadoff(js, prop_off) | GCMASK); invalidate_obj_cache(obj_off); invalidate_prop_cache_for_obj(obj_off); // js_gc(js); disabled return js_mktrue(); } jsoff_t prev = first_prop; while (prev != 0) { jsoff_t next_prop = loadoff(js, prev) & ~(3U | CONSTMASK | GCMASK); if (next_prop == prop_off) { jsoff_t deleted_next = loadoff(js, prop_off) & ~(GCMASK | CONSTMASK); jsoff_t current = loadoff(js, prev); saveoff(js, prev, (deleted_next & ~3U) | (current & (GCMASK | CONSTMASK | 3U))); saveoff(js, prop_off, loadoff(js, prop_off) | GCMASK); invalidate_obj_cache(obj_off); invalidate_prop_cache_for_obj(obj_off); // js_gc(js); disabled return js_mktrue(); } prev = next_prop; } return js_mktrue(); } if (vtype(operand) != T_PROP) { return js_mktrue(); } jsoff_t prop_off = (jsoff_t) vdata(operand); if (is_const_prop(js, prop_off)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot delete constant property"); return js_mkfalse(); } jsoff_t owner_obj_off = 0; jsoff_t prev_prop_off = 0; bool is_first_prop = false; for (jsoff_t off = 0; off < js->brk;) { jsoff_t v = loadoff(js, off); jsoff_t cleaned = v & ~(GCMASK | CONSTMASK); jsoff_t n = esize(cleaned); if ((cleaned & 3) == T_OBJ) { jsoff_t first_prop = cleaned & ~3U; if (first_prop == prop_off) { owner_obj_off = off; is_first_prop = true; break; } jsoff_t cur_prop = first_prop; while (cur_prop != 0 && cur_prop < js->brk) { jsoff_t next = loadoff(js, cur_prop) & ~(GCMASK | CONSTMASK | 3U); if (next == prop_off) { owner_obj_off = off; prev_prop_off = cur_prop; break; } cur_prop = next; } if (owner_obj_off != 0) break; } off += n; } if (owner_obj_off != 0) { jsval_t owner_obj = mkval(T_OBJ, owner_obj_off); jsoff_t frozen_off = lkp(js, owner_obj, "__frozen__", 10); if (frozen_off != 0) { jsval_t frozen_val = resolveprop(js, mkval(T_PROP, frozen_off)); if (js_truthy(js, frozen_val)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot delete property of frozen object"); return js_mkfalse(); } } jsoff_t sealed_off = lkp(js, owner_obj, "__sealed__", 10); if (sealed_off != 0) { jsval_t sealed_val = resolveprop(js, mkval(T_PROP, sealed_off)); if (js_truthy(js, sealed_val)) { if (js->flags & F_STRICT) return js_mkerr(js, "cannot delete property of sealed object"); return js_mkfalse(); } } jsoff_t key_str_off = loadoff(js, (jsoff_t)(prop_off + sizeof(jsoff_t))); jsoff_t key_len = (loadoff(js, key_str_off) >> 2) - 1; const char *key_str = (char *)&js->mem[key_str_off + sizeof(jsoff_t)]; descriptor_entry_t *desc = lookup_descriptor(owner_obj_off, key_str, key_len); if (desc && !desc->configurable) { if (js->flags & F_STRICT) return js_mkerr_typed(js, JS_ERR_TYPE, "cannot delete non-configurable property"); return js_mkfalse(); } if (is_first_prop) { jsoff_t deleted_next = loadoff(js, prop_off) & ~(GCMASK | CONSTMASK); jsoff_t current = loadoff(js, owner_obj_off); saveoff(js, owner_obj_off, (deleted_next & ~3U) | (current & (GCMASK | CONSTMASK | 3U))); } else { jsoff_t deleted_next = loadoff(js, prop_off) & ~(GCMASK | CONSTMASK); jsoff_t current = loadoff(js, prev_prop_off); saveoff(js, prev_prop_off, (deleted_next & ~3U) | (current & (GCMASK | CONSTMASK | 3U))); } saveoff(js, prop_off, loadoff(js, prop_off) | GCMASK); invalidate_obj_cache(owner_obj_off); invalidate_prop_cache_for_obj(owner_obj_off); // js_gc(js); disabled } (void) save_pos; (void) save_tok; return js_mktrue(); } else if (next(js) == TOK_AWAIT) { js->consumed = 1; jsval_t expr = js_unary(js); if (is_err(expr)) return expr; if (js->flags & F_NOEXEC) return expr; jsval_t resolved = resolveprop(js, expr); if (vtype(resolved) != T_PROMISE) { return resolved; } jsval_t p_obj = mkval(T_OBJ, vdata(resolved)); jsoff_t state_off = lkp(js, p_obj, "__state", 7); if (state_off == 0) return js_mkerr(js, "invalid promise state"); int state = (int)tod(resolveprop(js, mkval(T_PROP, state_off))); if (state != 0) { jsoff_t val_off = lkp(js, p_obj, "__value", 7); if (val_off == 0) return js_mkerr(js, "invalid promise value"); jsval_t val = resolveprop(js, mkval(T_PROP, val_off)); if (state == 1) { return val; } else if (state == 2) { return js_throw(js, val); } } mco_coro* current_mco = mco_running(); if (!current_mco) return js_mkerr(js, "await can only be used inside async functions"); async_exec_context_t *ctx = (async_exec_context_t *)mco_get_user_data(current_mco); if (!ctx || !ctx->coro) return js_mkerr(js, "invalid async context"); coroutine_t *coro = ctx->coro; coro->awaited_promise = resolved; coro->is_settled = false; coro->is_ready = false; jsval_t resume_obj = mkobj(js, 0); setprop(js, resume_obj, js_mkstr(js, "__native_func", 13), js_mkfun(resume_coroutine_wrapper)); setprop(js, resume_obj, js_mkstr(js, "__coroutine", 11), tov((double)(uintptr_t)coro)); jsval_t resume_fn = mkval(T_FUNC, vdata(resume_obj)); jsval_t reject_obj = mkobj(js, 0); setprop(js, reject_obj, js_mkstr(js, "__native_func", 13), js_mkfun(reject_coroutine_wrapper)); setprop(js, reject_obj, js_mkstr(js, "__coroutine", 11), tov((double)(uintptr_t)coro)); jsval_t reject_fn = mkval(T_FUNC, vdata(reject_obj)); jsval_t then_args[] = { resume_fn, reject_fn }; jsval_t saved_this = js->this_val; js->this_val = resolved; (void)builtin_promise_then(js, then_args, 2); js->this_val = saved_this; js_parse_state_t saved; JS_SAVE_STATE(js, saved); uint8_t saved_flags = js->flags; mco_result mco_res = mco_yield(current_mco); JS_RESTORE_STATE(js, saved); js->flags = saved_flags; if (mco_res != MCO_SUCCESS) { return js_mkerr(js, "failed to yield coroutine"); } jsval_t result = coro->result; bool is_error = coro->is_error; coro->is_settled = false; coro->awaited_promise = js_mkundef(); if (is_error) { return js_throw(js, result); } return result; } else if (next(js) == TOK_POSTINC || js->tok == TOK_POSTDEC) { uint8_t op = js->tok; js->consumed = 1; if ((js->flags & F_STRICT) && next(js) == TOK_IDENTIFIER && is_eval_or_arguments(js, js->toff, js->tlen)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot modify eval or arguments in strict mode"); } jsval_t operand = js_unary(js); if (is_err(operand)) return operand; if (js->flags & F_NOEXEC) return operand; jsval_t resolved = resolveprop(js, operand); if (vtype(operand) == T_PROP || vtype(operand) == T_PROPREF) { do_assign_op(js, op == TOK_POSTINC ? TOK_PLUS_ASSIGN : TOK_MINUS_ASSIGN, operand, tov(1)); } else { return js_mkerr_typed(js, JS_ERR_SYNTAX, "bad expr"); } return do_op(js, op == TOK_POSTINC ? TOK_PLUS : TOK_MINUS, resolved, tov(1)); } else if (next(js) == TOK_NOT || js->tok == TOK_TILDA || js->tok == TOK_TYPEOF || js->tok == TOK_VOID || js->tok == TOK_MINUS || js->tok == TOK_PLUS) { uint8_t t = js->tok; if (t == TOK_MINUS) t = TOK_UMINUS; if (t == TOK_PLUS) t = TOK_UPLUS; js->consumed = 1; jsoff_t saved_pos = js->pos; uint8_t saved_tok = js->tok; uint8_t saved_consumed = js->consumed; uint8_t saved_flags = js->flags; jsval_t operand = js_unary(js); if (t == TOK_TYPEOF && is_err(operand)) { js->pos = saved_pos; js->tok = saved_tok; js->consumed = saved_consumed; js->flags = (saved_flags & ~F_THROW) | F_NOEXEC; js_unary(js); js->flags = saved_flags & ~F_THROW; operand = js_mkundef(); } return do_op(js, t, js_mkundef(), operand); } else { return js_postfix(js); } } static jsval_t js_expr_bp(struct js *js, uint8_t min_bp) { jsval_t lhs = js_unary(js); if (is_err(lhs)) return lhs; loop: { uint8_t tok = next(js); if (tok >= TOK_MAX) return lhs; uint8_t bp = prec_table[tok]; if (bp == 0 || bp < min_bp) return lhs; js->consumed = 1; static const void *dispatch[] = { [TOK_LOR] = &&do_lor, [TOK_LAND] = &&do_land, [TOK_NULLISH] = &&do_nullish, [TOK_EXP] = &&do_exp, [TOK_OR] = &&do_binop, [TOK_XOR] = &&do_binop, [TOK_AND] = &&do_binop, [TOK_EQ] = &&do_binop, [TOK_NE] = &&do_binop, [TOK_SEQ] = &&do_binop, [TOK_SNE] = &&do_binop, [TOK_LT] = &&do_binop, [TOK_LE] = &&do_binop, [TOK_GT] = &&do_binop, [TOK_GE] = &&do_binop, [TOK_INSTANCEOF] = &&do_binop, [TOK_IN] = &&do_binop, [TOK_SHL] = &&do_binop, [TOK_SHR] = &&do_binop, [TOK_ZSHR] = &&do_binop, [TOK_PLUS] = &&do_binop, [TOK_MINUS] = &&do_binop, [TOK_MUL] = &&do_binop, [TOK_DIV] = &&do_binop, [TOK_REM] = &&do_binop, }; goto *dispatch[tok]; do_binop: { jsval_t rhs = js_expr_bp(js, bp + 1); if (is_err(rhs)) return rhs; lhs = do_op(js, tok, lhs, rhs); goto loop; } do_exp: { jsval_t rhs = js_expr_bp(js, bp); if (is_err(rhs)) return rhs; lhs = do_op(js, TOK_EXP, lhs, rhs); goto loop; } do_lor: { uint8_t flags = js->flags; lhs = resolveprop(js, lhs); if (js_truthy(js, lhs)) js->flags |= F_NOEXEC; jsval_t rhs = js_expr_bp(js, bp); if (!(flags & F_NOEXEC) && !js_truthy(js, lhs)) lhs = rhs; js->flags = flags; if (is_err(rhs)) return rhs; goto loop; } do_land: { uint8_t flags = js->flags; lhs = resolveprop(js, lhs); if (!js_truthy(js, lhs)) js->flags |= F_NOEXEC; jsval_t rhs = js_expr_bp(js, bp); if (!(flags & F_NOEXEC) && js_truthy(js, lhs)) lhs = rhs; js->flags = flags; if (is_err(rhs)) return rhs; goto loop; } do_nullish: { uint8_t flags = js->flags; lhs = resolveprop(js, lhs); uint8_t lhs_type = vtype(lhs); if (lhs_type != T_NULL && lhs_type != T_UNDEF) js->flags |= F_NOEXEC; jsval_t rhs = js_expr_bp(js, bp); if (!(flags & F_NOEXEC) && (lhs_type == T_NULL || lhs_type == T_UNDEF)) lhs = rhs; js->flags = flags; if (is_err(rhs)) return rhs; goto loop; } } } static jsval_t js_ternary(struct js *js) { jsval_t res = js_expr_bp(js, 1); if (next(js) == TOK_Q) { uint8_t flags = js->flags; js->consumed = 1; if (js_truthy(js, resolveprop(js, res))) { res = js_ternary(js); js->flags |= F_NOEXEC; EXPECT(TOK_COLON, js->flags = flags); js_ternary(js); js->flags = flags; } else { js->flags |= F_NOEXEC; js_ternary(js); EXPECT(TOK_COLON, js->flags = flags); js->flags = flags; res = js_ternary(js); } } return res; } static jsval_t js_assignment(struct js *js) { jsval_t res = js_ternary(js); if (!is_err(res) && vtype(res) == T_CODEREF && next(js) == TOK_ARROW) { jsoff_t param_start = coderefoff(res); jsoff_t param_len = codereflen(res); js->consumed = 1; char param_buf[256]; if (param_len + 3 > sizeof(param_buf)) return js_mkerr(js, "param too long"); param_buf[0] = '('; memcpy(param_buf + 1, &js->code[param_start], param_len); param_buf[param_len + 1] = ')'; param_buf[param_len + 2] = '\0'; uint8_t flags = js->flags; bool is_expr = next(js) != TOK_LBRACE; jsoff_t body_start = js->pos; if (is_expr && js->tok != TOK_EOF) { body_start = js->toff; } jsval_t body_result; if (is_expr) { js->flags |= F_NOEXEC; body_result = js_assignment(js); if (is_err(body_result)) { js->flags = flags; return body_result; } } else { body_start = js->toff; js->flags |= F_NOEXEC; js->consumed = 1; body_result = js_block(js, false); if (is_err(body_result)) { js->flags = flags; return body_result; } if (js->tok == TOK_RBRACE && js->consumed) { } else if (next(js) == TOK_RBRACE) { js->consumed = 1; } } js->flags = flags; jsoff_t body_end; if (is_expr) { uint8_t tok = next(js); if (tok == TOK_RPAREN || tok == TOK_RBRACE || tok == TOK_SEMICOLON || tok == TOK_COMMA || tok == TOK_EOF) { body_end = js->toff; } else { body_end = js->pos; } } else { body_end = js->pos; } size_t fn_size = param_len + (body_end - body_start) + 64; char *fn_str = (char *) malloc(fn_size); if (!fn_str) return js_mkerr(js, "oom"); jsoff_t fn_pos = 0; memcpy(fn_str + fn_pos, param_buf, param_len + 2); fn_pos += param_len + 2; if (is_expr) { fn_str[fn_pos++] = '{'; memcpy(fn_str + fn_pos, "return ", 7); fn_pos += 7; size_t body_len = body_end - body_start; memcpy(fn_str + fn_pos, &js->code[body_start], body_len); fn_pos += body_len; fn_str[fn_pos++] = '}'; } else { size_t body_len = body_end - body_start; memcpy(fn_str + fn_pos, &js->code[body_start], body_len); fn_pos += body_len; } jsval_t str = js_mkstr(js, fn_str, fn_pos); free(fn_str); if (is_err(str)) return str; jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res2 = setprop(js, func_obj, code_key, str); if (is_err(res2)) return res2; if (!(flags & F_NOEXEC)) { jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; jsval_t res3 = setprop(js, func_obj, scope_key, js->scope); if (is_err(res3)) return res3; jsval_t this_key = js_mkstr(js, "__this", 6); if (is_err(this_key)) return this_key; jsval_t res4 = setprop(js, func_obj, this_key, js->this_val); if (is_err(res4)) return res4; } return mkval(T_FUNC, (unsigned long) vdata(func_obj)); } while (!is_err(res) && (next(js) == TOK_ASSIGN || js->tok == TOK_PLUS_ASSIGN || js->tok == TOK_MINUS_ASSIGN || js->tok == TOK_MUL_ASSIGN || js->tok == TOK_DIV_ASSIGN || js->tok == TOK_REM_ASSIGN || js->tok == TOK_SHL_ASSIGN || js->tok == TOK_SHR_ASSIGN || js->tok == TOK_ZSHR_ASSIGN || js->tok == TOK_AND_ASSIGN || js->tok == TOK_XOR_ASSIGN || js->tok == TOK_OR_ASSIGN)) { uint8_t op = js->tok; js->consumed = 1; jsval_t lhs_val = js_mkundef(); if (op != TOK_ASSIGN && !(js->flags & F_NOEXEC)) { lhs_val = resolveprop(js, res); if (is_err(lhs_val)) return lhs_val; } jsval_t rhs = js_assignment(js); if (is_err(rhs)) return rhs; if (op == TOK_ASSIGN) { res = do_op(js, op, res, rhs); } else { jsval_t rhs_resolved = resolveprop(js, rhs); if (is_err(rhs_resolved)) return rhs_resolved; uint8_t m[] = { TOK_PLUS, TOK_MINUS, TOK_MUL, TOK_DIV, TOK_REM, TOK_SHL, TOK_SHR, TOK_ZSHR, TOK_AND, TOK_XOR, TOK_OR }; uint8_t binary_op = m[op - TOK_PLUS_ASSIGN]; jsval_t op_result = do_op(js, binary_op, lhs_val, rhs_resolved); if (is_err(op_result)) return op_result; res = assign(js, res, op_result); } } return res; } static jsval_t js_decl(struct js *js, bool is_const) { uint8_t exe = !(js->flags & F_NOEXEC); js->consumed = 1; for (;;) { if (next(js) == TOK_LBRACE) { js->consumed = 1; js_parse_state_t pattern_state; JS_SAVE_STATE(js, pattern_state); int depth = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LBRACE) depth++; else if (js->tok == TOK_RBRACE) depth--; if (depth > 0) js->consumed = 1; } js->consumed = 1; if (next(js) != TOK_ASSIGN) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "destructuring requires assignment"); } js->consumed = 1; jsval_t v = js_expr(js); if (is_err(v)) return v; jsval_t obj = js_mkundef(); if (exe) { obj = resolveprop(js, v); if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR) { return js_mkerr(js, "cannot destructure non-object"); } } js_parse_state_t end_state; JS_SAVE_STATE(js, end_state); JS_RESTORE_STATE(js, pattern_state); jsval_t picked_keys = exe ? js_mkarr(js) : js_mkundef(); if (exe && is_err(picked_keys)) return picked_keys; while (next(js) != TOK_RBRACE && next(js) != TOK_EOF) { bool is_rest = false; if (next(js) == TOK_REST) { is_rest = true; js->consumed = 1; } if (next(js) != TOK_IDENTIFIER) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "identifier expected in object destructuring"); } jsoff_t src_off = js->toff, src_len = js->tlen; jsoff_t var_off = src_off, var_len = src_len; js->consumed = 1; bool is_nested_obj = false; bool is_nested_arr = false; jsoff_t nested_pattern_start = 0; if (!is_rest && next(js) == TOK_COLON) { js->consumed = 1; if (next(js) == TOK_LBRACE) { is_nested_obj = true; nested_pattern_start = js->toff; int depth = 1; js->consumed = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LBRACE) depth++; else if (js->tok == TOK_RBRACE) depth--; if (depth > 0) js->consumed = 1; } js->consumed = 1; } else if (next(js) == TOK_LBRACKET) { is_nested_arr = true; nested_pattern_start = js->toff; int depth = 1; js->consumed = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LBRACKET) depth++; else if (js->tok == TOK_RBRACKET) depth--; if (depth > 0) js->consumed = 1; } js->consumed = 1; } else { EXPECT(TOK_IDENTIFIER, ); var_off = js->toff; var_len = js->tlen; js->consumed = 1; } } jsoff_t default_off = 0, default_len = 0; if (!is_rest && !is_nested_obj && !is_nested_arr && next(js) == TOK_ASSIGN) { js->consumed = 1; default_off = js->pos; uint8_t sf = js->flags; js->flags |= F_NOEXEC; jsval_t r = js_expr(js); js->flags = sf; if (is_err(r)) return r; default_len = js->pos - default_off; } if (!exe) goto obj_destruct_next; if (is_rest) goto obj_destruct_rest; if (is_nested_obj || is_nested_arr) goto obj_destruct_nested; goto obj_destruct_simple; obj_destruct_rest:; jsval_t rest_obj = mkobj(js, 0); if (is_err(rest_obj)) return rest_obj; jsoff_t scan = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (scan < js->brk && scan != 0) { jsoff_t koff = loadoff(js, scan + (jsoff_t) sizeof(scan)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; bool is_picked = false; jsoff_t picked_len = arr_length(js, picked_keys); for (jsoff_t i = 0; i < picked_len; i++) { jsval_t pk = arr_get(js, picked_keys, i); if (vtype(pk) != T_STR) continue; jsoff_t pklen, pkoff = vstr(js, pk, &pklen); if (klen == pklen && memcmp(key, &js->mem[pkoff], klen) == 0) { is_picked = true; break; } } if (!is_picked && !(klen == 9 && memcmp(key, "__proto__", 9) == 0)) { jsval_t val = loadval(js, scan + (jsoff_t) (sizeof(scan) + sizeof(koff))); jsval_t key_str = js_mkstr(js, key, klen); if (is_err(key_str)) return key_str; jsval_t res = setprop(js, rest_obj, key_str, val); if (is_err(res)) return res; } scan = loadoff(js, scan) & ~(3U | CONSTMASK | ARRMASK); } { const char *vn = &js->code[var_off]; if (lkp(js, js->scope, vn, var_len) > 0) return js_mkerr(js, "'%.*s' already declared", (int)var_len, vn); jsval_t x = mkprop(js, js->scope, js_mkstr(js, vn, var_len), rest_obj, is_const); if (is_err(x)) return x; } goto obj_destruct_next; obj_destruct_nested:; { jsval_t sk = js_mkstr(js, &js->code[src_off], src_len); if (is_err(sk)) return sk; js_arr_push(js, picked_keys, sk); jsoff_t poff = lkp(js, obj, &js->code[src_off], src_len); jsval_t nobj = poff > 0 ? resolveprop(js, mkval(T_PROP, poff)) : js_mkundef(); jsoff_t pattern_end = js->pos; js->pos = nested_pattern_start; js->consumed = 1; jsval_t saved_obj = obj; obj = nobj; if (!is_nested_obj) goto nested_done; if (next(js) != TOK_LBRACE) return js_mkerr_typed(js, JS_ERR_SYNTAX, "expected '{' in nested destructuring"); js->consumed = 1; while (next(js) != TOK_RBRACE && next(js) != TOK_EOF) { if (next(js) != TOK_IDENTIFIER) return js_mkerr_typed(js, JS_ERR_SYNTAX, "identifier expected in nested destructuring"); jsoff_t isoff = js->toff, islen = js->tlen; jsoff_t ivoff = isoff, ivlen = islen; js->consumed = 1; if (next(js) == TOK_COLON) { js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); ivoff = js->toff; ivlen = js->tlen; js->consumed = 1; } const char *ivn = &js->code[ivoff]; if (lkp(js, js->scope, ivn, ivlen) > 0) return js_mkerr(js, "'%.*s' already declared", (int)ivlen, ivn); jsoff_t ipoff = lkp(js, nobj, &js->code[isoff], islen); jsval_t ival = ipoff > 0 ? resolveprop(js, mkval(T_PROP, ipoff)) : js_mkundef(); jsval_t ix = mkprop(js, js->scope, js_mkstr(js, ivn, ivlen), ival, is_const); if (is_err(ix)) return ix; if (next(js) == TOK_RBRACE) break; EXPECT(TOK_COMMA, ); } js->consumed = 1; nested_done: obj = saved_obj; js->pos = pattern_end; js->consumed = 1; } goto obj_destruct_next; obj_destruct_simple:; { const char *vn = &js->code[var_off]; if (lkp(js, js->scope, vn, var_len) > 0) return js_mkerr(js, "'%.*s' already declared", (int)var_len, vn); jsval_t sk = js_mkstr(js, &js->code[src_off], src_len); if (is_err(sk)) return sk; js_arr_push(js, picked_keys, sk); jsoff_t poff = lkp(js, obj, &js->code[src_off], src_len); jsval_t pval = poff > 0 ? resolveprop(js, mkval(T_PROP, poff)) : js_mkundef(); if (vtype(pval) == T_UNDEF && default_len > 0) { pval = js_eval_slice(js, default_off, default_len); if (is_err(pval)) return pval; pval = resolveprop(js, pval); } jsval_t x = mkprop(js, js->scope, js_mkstr(js, vn, var_len), pval, is_const); if (is_err(x)) return x; } obj_destruct_next: if (next(js) == TOK_RBRACE) break; EXPECT(TOK_COMMA, ); } JS_RESTORE_STATE(js, end_state); } else if (next(js) == TOK_LBRACKET) { js->consumed = 1; js_parse_state_t pattern_state; JS_SAVE_STATE(js, pattern_state); int depth = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == TOK_LBRACKET) depth++; else if (js->tok == TOK_RBRACKET) depth--; if (depth > 0) js->consumed = 1; } js->consumed = 1; if (next(js) != TOK_ASSIGN) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "array destructuring requires assignment"); } js->consumed = 1; jsval_t v = js_expr(js); if (is_err(v)) return v; jsval_t arr = js_mkundef(); if (exe) { arr = resolveprop(js, v); if (vtype(arr) != T_ARR && vtype(arr) != T_STR) { return js_mkerr(js, "cannot array destructure non-iterable"); } } js_parse_state_t end_state; JS_SAVE_STATE(js, end_state); JS_RESTORE_STATE(js, pattern_state); int index = 0; while (next(js) != TOK_RBRACKET && next(js) != TOK_EOF) { if (next(js) == TOK_COMMA) { js->consumed = 1; index++; continue; } bool is_rest = false; if (next(js) == TOK_REST) { is_rest = true; js->consumed = 1; } if (next(js) != TOK_IDENTIFIER) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "identifier expected in array destructuring"); } jsoff_t var_off = js->toff, var_len = js->tlen; js->consumed = 1; jsoff_t default_off = 0, default_len = 0; if (!is_rest && next(js) == TOK_ASSIGN) { js->consumed = 1; default_off = js->pos; uint8_t sf = js->flags; js->flags |= F_NOEXEC; jsval_t r = js_expr(js); js->flags = sf; if (is_err(r)) return r; default_len = js->pos - default_off; } if (exe) { const char *var_name = &js->code[var_off]; if (lkp(js, js->scope, var_name, var_len) > 0) { return js_mkerr(js, "'%.*s' already declared", (int)var_len, var_name); } jsval_t prop_val; if (is_rest) { jsval_t rest_arr = js_mkarr(js); if (is_err(rest_arr)) return rest_arr; jsoff_t total_len = vtype(arr) == T_STR ? 0 : arr_length(js, arr); if (vtype(arr) == T_STR) { jsoff_t slen; vstr(js, arr, &slen); total_len = slen; } for (jsoff_t i = index; i < total_len; i++) { jsval_t elem; if (vtype(arr) == T_STR) { jsoff_t slen, soff = vstr(js, arr, &slen); elem = js_mkstr(js, (char *)&js->mem[soff + i], 1); } else { elem = arr_get(js, arr, i); } js_arr_push(js, rest_arr, elem); } prop_val = rest_arr; } else { if (vtype(arr) == T_STR) { jsoff_t slen, soff = vstr(js, arr, &slen); if ((jsoff_t)index < slen) { prop_val = js_mkstr(js, (char *)&js->mem[soff + index], 1); } else { prop_val = js_mkundef(); } } else { prop_val = arr_get(js, arr, index); } if (vtype(prop_val) == T_UNDEF && default_len > 0) { prop_val = js_eval_slice(js, default_off, default_len); if (is_err(prop_val)) return prop_val; prop_val = resolveprop(js, prop_val); } } jsval_t x = mkprop(js, js->scope, js_mkstr(js, var_name, var_len), prop_val, is_const); if (is_err(x)) return x; } index++; if (next(js) == TOK_RBRACKET) break; EXPECT(TOK_COMMA, ); } JS_RESTORE_STATE(js, end_state); } else { EXPECT(TOK_IDENTIFIER, ); js->consumed = 0; jsoff_t noff = js->toff, nlen = js->tlen; char *name = (char *) &js->code[noff]; if ((js->flags & F_STRICT) && is_strict_restricted(name, nlen)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot use '%.*s' as variable name in strict mode", (int) nlen, name); } if ((js->flags & F_STRICT) && is_strict_reserved(name, nlen)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "'%.*s' is reserved in strict mode", (int) nlen, name); } jsval_t v = js_mkundef(); js->consumed = 1; if (next(js) == TOK_ASSIGN) { js->consumed = 1; v = js_expr(js); if (is_err(v)) return v; } if (exe) { char decoded_name[256]; size_t decoded_len = decode_ident_escapes(name, nlen, decoded_name, sizeof(decoded_name)); if (lkp(js, js->scope, decoded_name, decoded_len) > 0) return js_mkerr(js, "'%.*s' already declared", (int) decoded_len, decoded_name); jsval_t x = mkprop(js, js->scope, js_mkstr(js, decoded_name, decoded_len), resolveprop(js, v), is_const); if (is_err(x)) return x; } } uint8_t decl_next = next(js); bool asi = js->had_newline || decl_next == TOK_EOF || decl_next == TOK_RBRACE; if (decl_next == TOK_SEMICOLON || asi) break; EXPECT(TOK_COMMA, ); } return js_mkundef(); } static jsval_t js_expr(struct js *js) { return js_assignment(js); } static jsval_t js_expr_comma(struct js *js) { jsval_t res = js_assignment(js); if (is_err(res)) return res; while (next(js) == TOK_COMMA) { js->consumed = 1; res = js_assignment(js); if (is_err(res)) return res; } return res; } static jsval_t js_eval_slice(struct js *js, jsoff_t off, jsoff_t len) { js_parse_state_t saved; JS_SAVE_STATE(js, saved); js->code = saved.code + off; js->clen = len; js->pos = 0; js->consumed = 1; jsval_t result = js_expr(js); JS_RESTORE_STATE(js, saved); return result; } static jsval_t js_eval_str(struct js *js, const char *code, jsoff_t len) { js_parse_state_t saved; JS_SAVE_STATE(js, saved); js->code = code; js->clen = len; js->pos = 0; js->consumed = 1; jsval_t result = js_expr(js); JS_RESTORE_STATE(js, saved); return result; } static jsval_t js_let(struct js *js) { return js_decl(js, false); } static jsval_t js_const(struct js *js) { return js_decl(js, true); } static jsval_t js_func_decl(struct js *js) { uint8_t exe = !(js->flags & F_NOEXEC); uint8_t saved_flags = js->flags; js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); js->consumed = 0; jsoff_t noff = js->toff, nlen = js->tlen; char *name = (char *) &js->code[noff]; js->consumed = 1; EXPECT(TOK_LPAREN, ); jsoff_t pos = js->pos - 1; int param_count = 0; if (!parse_func_params(js, &saved_flags, ¶m_count)) { js->flags = saved_flags; return js_mkerr_typed(js, JS_ERR_SYNTAX, "invalid parameters"); } EXPECT(TOK_RPAREN, ); EXPECT(TOK_LBRACE, ); js->consumed = 0; uint8_t flags = js->flags; js->flags |= F_NOEXEC; jsval_t res = js_block(js, false); if (is_err(res)) { js->flags = flags; return res; } js->flags = flags; jsval_t str = js_mkstr(js, &js->code[pos], js->pos - pos); jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res2 = setprop(js, func_obj, code_key, str); if (is_err(res2)) return res2; jsval_t len_key = js_mkstr(js, "length", 6); if (is_err(len_key)) return len_key; jsval_t res_len = setprop(js, func_obj, len_key, tov(param_count)); if (is_err(res_len)) return res_len; js_set_descriptor(js, func_obj, "length", 6, JS_DESC_C); jsval_t name_key = js_mkstr(js, "name", 4); if (is_err(name_key)) return name_key; jsval_t name_val = js_mkstr(js, name, nlen); if (is_err(name_val)) return name_val; jsval_t res3 = setprop(js, func_obj, name_key, name_val); if (is_err(res3)) return res3; if (exe) { jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; jsval_t res4 = setprop(js, func_obj, scope_key, js->scope); if (is_err(res4)) return res4; } jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj)); jsval_t proto_setup = setup_func_prototype(js, func); if (is_err(proto_setup)) return proto_setup; if (exe) { jsoff_t existing = lkp(js, js->scope, name, nlen); if (existing > 0) { saveval(js, existing + sizeof(jsoff_t) * 2, func); } else { jsval_t x = mkprop(js, js->scope, js_mkstr(js, name, nlen), func, false); if (is_err(x)) return x; } } return js_mkundef(); } static jsval_t js_func_decl_async(struct js *js) { uint8_t exe = !(js->flags & F_NOEXEC); js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); js->consumed = 0; jsoff_t noff = js->toff, nlen = js->tlen; char *name = (char *) &js->code[noff]; js->consumed = 1; EXPECT(TOK_LPAREN, ); jsoff_t pos = js->pos - 1; if (!parse_func_params(js, NULL, NULL)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "invalid parameters"); } EXPECT(TOK_RPAREN, ); EXPECT(TOK_LBRACE, ); js->consumed = 0; uint8_t flags = js->flags; js->flags |= F_NOEXEC; jsval_t res = js_block(js, false); if (is_err(res)) { js->flags = flags; return res; } js->flags = flags; jsval_t str = js_mkstr(js, &js->code[pos], js->pos - pos); jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res2 = setprop(js, func_obj, code_key, str); if (is_err(res2)) return res2; jsval_t async_key = js_mkstr(js, "__async", 7); if (is_err(async_key)) return async_key; jsval_t res_async = setprop(js, func_obj, async_key, js_mktrue()); if (is_err(res_async)) return res_async; jsval_t len_key = js_mkstr(js, "length", 6); if (is_err(len_key)) return len_key; jsval_t res_len = setprop(js, func_obj, len_key, tov(0)); if (is_err(res_len)) return res_len; js_set_descriptor(js, func_obj, "length", 6, JS_DESC_C); jsval_t name_key = js_mkstr(js, "name", 4); if (is_err(name_key)) return name_key; jsval_t name_val = js_mkstr(js, name, nlen); if (is_err(name_val)) return name_val; jsval_t res3 = setprop(js, func_obj, name_key, name_val); if (is_err(res3)) return res3; if (exe) { jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; jsval_t res4 = setprop(js, func_obj, scope_key, js->scope); if (is_err(res4)) return res4; } jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj)); jsval_t proto_setup = setup_func_prototype(js, func); if (is_err(proto_setup)) return proto_setup; if (exe) { jsoff_t existing = lkp(js, js->scope, name, nlen); if (existing > 0) { saveval(js, existing + sizeof(jsoff_t) * 2, func); } else { jsval_t x = mkprop(js, js->scope, js_mkstr(js, name, nlen), func, false); if (is_err(x)) return x; } } return js_mkundef(); } static jsval_t js_block_or_stmt(struct js *js) { if (next(js) == TOK_LBRACE) return js_block(js, !(js->flags & F_NOEXEC)); uint8_t stmt_tok = js->tok; jsval_t res = resolveprop(js, js_stmt(js)); bool is_block_stmt = ( stmt_tok == TOK_FUNC || stmt_tok == TOK_CLASS || stmt_tok == TOK_IF || stmt_tok == TOK_WHILE || stmt_tok == TOK_DO || stmt_tok == TOK_FOR || stmt_tok == TOK_SWITCH || stmt_tok == TOK_TRY || stmt_tok == TOK_LBRACE || stmt_tok == TOK_ASYNC ); if (!is_block_stmt) js->consumed = 0; return res; } static jsval_t js_if(struct js *js) { js->consumed = 1; EXPECT(TOK_LPAREN, ); jsval_t res = js_mkundef(), cond = resolveprop(js, js_expr(js)); EXPECT(TOK_RPAREN, ); bool cond_true = js_truthy(js, cond), exe = !(js->flags & F_NOEXEC); if (!cond_true) js->flags |= F_NOEXEC; jsval_t blk = js_block_or_stmt(js); if (cond_true) res = blk; if (exe && !cond_true) js->flags &= (uint8_t) ~F_NOEXEC; if (lookahead(js) == TOK_ELSE) { js->consumed = 1; next(js); js->consumed = 1; if (cond_true) js->flags |= F_NOEXEC; blk = js_block_or_stmt(js); if (!cond_true) res = blk; if (cond_true && exe) js->flags &= (uint8_t) ~F_NOEXEC; } return res; } static inline bool expect(struct js *js, uint8_t tok, jsval_t *res) { if (next(js) != tok) { *res = js_mkerr_typed(js, JS_ERR_SYNTAX, "parse error"); return false; } else { js->consumed = 1; return true; } } static inline bool is_err2(jsval_t *v, jsval_t *res) { bool r = is_err(*v); if (r) *res = *v; return r; } typedef struct { jsoff_t body_start; jsoff_t body_end; jsoff_t var_name_off; jsoff_t var_name_len; bool is_const_var; uint8_t flags; bool has_destructure; jsoff_t destructure_off; jsoff_t destructure_len; } for_iter_ctx_t; static jsval_t for_iter_bind_var(struct js *js, for_iter_ctx_t *ctx, jsval_t value) { if (ctx->has_destructure) { return bind_destruct_pattern(js, &js->code[ctx->destructure_off], ctx->destructure_len, value, js->scope); } const char *var_name = &js->code[ctx->var_name_off]; jsoff_t existing = lkp(js, js->scope, var_name, ctx->var_name_len); if (existing > 0) { saveval(js, existing + sizeof(jsoff_t) * 2, value); return js_mkundef(); } return mkprop(js, js->scope, js_mkstr(js, var_name, ctx->var_name_len), value, ctx->is_const_var); } static jsval_t for_iter_exec_body(struct js *js, for_iter_ctx_t *ctx) { js->pos = ctx->body_start; js->consumed = 1; js->flags = (ctx->flags & ~F_NOEXEC) | F_LOOP; return js_block_or_stmt(js); } static bool for_in_should_skip_key(struct js *js, jsval_t obj, const char *key, jsoff_t klen) { if (streq(key, klen, "__proto__", 9)) return true; jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, klen); if (desc && !desc->enumerable) return true; return false; } static jsval_t for_in_iter_object(struct js *js, for_iter_ctx_t *ctx, jsval_t obj) { jsval_t iter_obj = (vtype(obj) == T_FUNC) ? mkval(T_OBJ, vdata(obj)) : obj; jsoff_t prop_off = loadoff(js, (jsoff_t) vdata(iter_obj)) & ~(3U | CONSTMASK | ARRMASK); while (prop_off < js->brk && prop_off != 0) { jsoff_t koff = loadoff(js, prop_off + (jsoff_t) sizeof(prop_off)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (!for_in_should_skip_key(js, iter_obj, key, klen)) { jsval_t key_str = js_mkstr(js, key, klen); jsval_t err = for_iter_bind_var(js, ctx, key_str); if (is_err(err)) return err; jsval_t v = for_iter_exec_body(js, ctx); if (is_err(v)) return v; if (js->flags & F_BREAK) break; if (label_flags & F_CONTINUE_LABEL) { js->flags |= F_BREAK; break; } if (js->flags & F_RETURN) return v; } prop_off = loadoff(js, prop_off) & ~(3U | CONSTMASK | ARRMASK); } return js_mkundef(); } static jsval_t for_of_iter_array(struct js *js, for_iter_ctx_t *ctx, jsval_t iterable) { jsoff_t next_prop = loadoff(js, (jsoff_t) vdata(iterable)) & ~(3U | CONSTMASK | ARRMASK); jsoff_t length = 0, scan = next_prop; while (scan < js->brk && scan != 0) { jsoff_t koff = loadoff(js, scan + (jsoff_t) sizeof(scan)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, "length", 6)) { jsval_t val = loadval(js, scan + (jsoff_t) (sizeof(scan) + sizeof(koff))); if (vtype(val) == T_NUM) length = (jsoff_t) tod(val); break; } scan = loadoff(js, scan) & ~(3U | CONSTMASK | ARRMASK); } for (jsoff_t i = 0; i < length; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%u", (unsigned) i); jsoff_t idxlen = (jsoff_t) strlen(idx); jsoff_t prop = next_prop; jsval_t val = js_mkundef(); while (prop < js->brk && prop != 0) { jsoff_t koff = loadoff(js, prop + (jsoff_t) sizeof(prop)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; if (streq(key, klen, idx, idxlen)) { val = loadval(js, prop + (jsoff_t) (sizeof(prop) + sizeof(koff))); break; } prop = loadoff(js, prop) & ~(3U | CONSTMASK | ARRMASK); } jsval_t err = for_iter_bind_var(js, ctx, val); if (is_err(err)) return err; jsval_t v = for_iter_exec_body(js, ctx); if (is_err(v)) return v; if (js->flags & F_BREAK) break; if (label_flags & F_CONTINUE_LABEL) { js->flags |= F_BREAK; break; } if (js->flags & F_RETURN) return v; } return js_mkundef(); } static jsval_t for_of_iter_string(struct js *js, for_iter_ctx_t *ctx, jsval_t iterable) { jsoff_t slen, soff = vstr(js, iterable, &slen); const char *str = (char *) &js->mem[soff]; for (jsoff_t i = 0; i < slen; i++) { jsval_t char_str = js_mkstr(js, &str[i], 1); jsval_t err = for_iter_bind_var(js, ctx, char_str); if (is_err(err)) return err; jsval_t v = for_iter_exec_body(js, ctx); if (is_err(v)) return v; if (js->flags & F_BREAK) break; if (label_flags & F_CONTINUE_LABEL) { js->flags |= F_BREAK; break; } if (js->flags & F_RETURN) return v; } return js_mkundef(); } static jsval_t for_of_iter_object(struct js *js, for_iter_ctx_t *ctx, jsval_t iterable) { const char *iter_key = get_iterator_sym_key(); jsoff_t iter_prop = iter_key ? lkp_proto(js, iterable, iter_key, strlen(iter_key)) : 0; if (iter_prop == 0) return js_mkerr(js, "for-of requires iterable"); js_parse_state_t saved_state; JS_SAVE_STATE(js, saved_state); uint8_t saved_flags = js->flags; jsval_t iter_method = loadval(js, iter_prop + sizeof(jsoff_t) * 2); push_this(iterable); jsval_t iterator = call_js_with_args(js, iter_method, NULL, 0); pop_this(); JS_RESTORE_STATE(js, saved_state); js->flags = saved_flags; if (is_err(iterator)) return iterator; while (true) { jsoff_t next_off = lkp_proto(js, iterator, "next", 4); if (next_off == 0) return js_mkerr(js, "iterator.next is not a function"); jsval_t next_method = loadval(js, next_off + sizeof(jsoff_t) * 2); if (vtype(next_method) != T_FUNC && vtype(next_method) != T_CFUNC) return js_mkerr(js, "iterator.next is not a function"); push_this(iterator); jsval_t result = call_js_with_args(js, next_method, NULL, 0); pop_this(); JS_RESTORE_STATE(js, saved_state); js->flags = saved_flags; if (is_err(result)) return result; jsoff_t done_off = lkp(js, result, "done", 4); jsval_t done_val = done_off ? loadval(js, done_off + sizeof(jsoff_t) * 2) : js_mkundef(); if (js_truthy(js, done_val)) break; jsoff_t value_off = lkp(js, result, "value", 5); jsval_t value = value_off ? loadval(js, value_off + sizeof(jsoff_t) * 2) : js_mkundef(); jsval_t err = for_iter_bind_var(js, ctx, value); if (is_err(err)) return err; jsval_t v = for_iter_exec_body(js, ctx); if (is_err(v)) return v; if (js->flags & F_BREAK) break; if (label_flags & F_CONTINUE_LABEL) { js->flags |= F_BREAK; break; } if (js->flags & F_RETURN) return v; } return js_mkundef(); } static jsval_t js_for(struct js *js) { uint8_t flags = js->flags, exe = !(flags & F_NOEXEC); jsval_t v, res = js_mkundef(); jsoff_t pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0; bool use_label_stack = label_stack && utarray_len(label_stack) > 0; int marker_index = 0; if (use_label_stack) { label_entry_t marker = { .name = NULL, .name_len = 0, .is_loop = true, .is_block = false }; utarray_push_back(label_stack, &marker); marker_index = utarray_len(label_stack) - 1; } if (exe) mkscope(js); if (!expect(js, TOK_FOR, &res)) goto done; if (!expect(js, TOK_LPAREN, &res)) goto done; bool is_for_in = false; bool is_for_of = false; jsoff_t var_name_off = 0, var_name_len = 0; bool is_const_var = false; bool is_var_decl = false; bool is_let_loop = false; jsoff_t let_var_off = 0, let_var_len = 0; bool has_destructure = false; jsoff_t destructure_off = 0, destructure_len = 0; if (next(js) == TOK_LET || next(js) == TOK_CONST || next(js) == TOK_VAR) { if (js->tok == TOK_VAR) { is_var_decl = true; if ((js->flags & F_STRICT) && !js->var_warning_shown) { fprintf(stderr, "Warning: 'var' is deprecated, use 'let' or 'const' instead\n"); js->var_warning_shown = true; } } else if (js->tok == TOK_LET) { is_let_loop = true; } is_const_var = (js->tok == TOK_CONST); js->consumed = 1; if (next(js) == TOK_LBRACKET || next(js) == TOK_LBRACE) { has_destructure = true; destructure_off = js->toff; uint8_t open_tok = js->tok; uint8_t close_tok = (open_tok == TOK_LBRACKET) ? TOK_RBRACKET : TOK_RBRACE; int depth = 1; js->consumed = 1; while (depth > 0 && next(js) != TOK_EOF) { if (js->tok == open_tok) depth++; else if (js->tok == close_tok) depth--; js->consumed = 1; } destructure_len = js->pos - destructure_off; if (next(js) == TOK_IN) { is_for_in = true; js->consumed = 1; } else if (next(js) == TOK_OF) { is_for_of = true; js->consumed = 1; } else { res = js_mkerr_typed(js, JS_ERR_SYNTAX, "expected 'in' or 'of' after destructuring pattern"); goto done; } } else if (next(js) == TOK_IDENTIFIER) { var_name_off = js->toff; var_name_len = js->tlen; if (is_let_loop) { let_var_off = var_name_off; let_var_len = var_name_len; } js->consumed = 1; if (next(js) == TOK_IN) { is_for_in = true; js->consumed = 1; } else if (next(js) == TOK_OF) { is_for_of = true; js->consumed = 1; } else { js->pos = var_name_off; js->consumed = 1; if (is_const_var) { v = js_const(js); } else if (is_var_decl) { v = js_var_decl(js); } else { v = js_let(js); } if (is_err2(&v, &res)) goto done; } } } else if (next(js) == TOK_IDENTIFIER) { var_name_off = js->toff; var_name_len = js->tlen; js->consumed = 1; if (next(js) == TOK_IN) { is_for_in = true; js->consumed = 1; } else if (next(js) == TOK_OF) { is_for_of = true; js->consumed = 1; } else { js->pos = var_name_off; js->consumed = 1; v = js_expr_comma(js); if (is_err2(&v, &res)) goto done; } } else if (next(js) == TOK_SEMICOLON) { } else { v = js_expr_comma(js); if (is_err2(&v, &res)) goto done; } if (is_for_in) { jsval_t obj_expr = js_expr(js); if (is_err2(&obj_expr, &res)) goto done; if (!expect(js, TOK_RPAREN, &res)) goto done; jsoff_t body_start = js->pos; js->flags |= F_NOEXEC; v = js_block_or_stmt(js); if (is_err2(&v, &res)) goto done; jsoff_t body_end = js->pos; if (exe) { jsval_t obj = resolveprop(js, obj_expr); if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR && vtype(obj) != T_FUNC) { res = js_mkerr(js, "for-in requires object"); goto done; } jsval_t iter_obj = obj; if (vtype(obj) == T_FUNC) { iter_obj = mkval(T_OBJ, vdata(obj)); } jsoff_t prop_off = loadoff(js, (jsoff_t) vdata(iter_obj)) & ~(3U | CONSTMASK | ARRMASK); while (prop_off < js->brk && prop_off != 0) { jsoff_t koff = loadoff(js, prop_off + (jsoff_t) sizeof(prop_off)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; bool should_skip = streq(key, klen, "__proto__", 9); if (!should_skip && klen > 7 && key[0] == '_' && key[1] == '_' && key[2] == 'd' && key[3] == 'e' && key[4] == 's' && key[5] == 'c' && key[6] == '_') { should_skip = true; } if (!should_skip) { jsoff_t iter_obj_off = (jsoff_t)vdata(iter_obj); descriptor_entry_t *desc = lookup_descriptor(iter_obj_off, key, klen); if (desc && !desc->enumerable) { should_skip = true; } } if (!should_skip) { jsval_t key_str = js_mkstr(js, key, klen); const char *var_name = &js->code[var_name_off]; jsoff_t existing = lkp(js, js->scope, var_name, var_name_len); if (existing > 0) { saveval(js, existing + sizeof(jsoff_t) * 2, key_str); } else { jsval_t x = mkprop(js, js->scope, js_mkstr(js, var_name, var_name_len), key_str, is_const_var); if (is_err(x)) { res = x; goto done; } } js->pos = body_start; js->consumed = 1; js->flags = (flags & ~F_NOEXEC) | F_LOOP; v = js_block_or_stmt(js); if (is_err(v)) { res = v; goto done; } if (label_flags & F_CONTINUE_LABEL) { if (is_this_loop_continue_target(marker_index)) { clear_continue_label(); js->flags &= ~(F_BREAK | F_NOEXEC); } else { js->flags |= F_BREAK; break; } } if (js->flags & F_BREAK) break; if (js->flags & F_RETURN) { res = v; goto done; } } prop_off = loadoff(js, prop_off) & ~(3U | CONSTMASK | ARRMASK); } } js->pos = body_end; js->tok = TOK_SEMICOLON; js->consumed = 0; goto done; } if (is_for_of) { jsval_t iter_expr = js_expr(js); if (is_err2(&iter_expr, &res)) goto done; if (!expect(js, TOK_RPAREN, &res)) goto done; jsoff_t body_start = js->pos; js->flags |= F_NOEXEC; v = js_block_or_stmt(js); if (is_err2(&v, &res)) goto done; jsoff_t body_end = js->pos; if (exe) { jsval_t iterable = resolveprop(js, iter_expr); uint8_t itype = vtype(iterable); for_iter_ctx_t ctx = { body_start, body_end, var_name_off, var_name_len, is_const_var, flags, has_destructure, destructure_off, destructure_len }; if (itype == T_ARR) res = for_of_iter_array(js, &ctx, iterable); else if (itype == T_STR) res = for_of_iter_string(js, &ctx, iterable); else if (itype == T_OBJ) res = for_of_iter_object(js, &ctx, iterable); else res = js_mkerr(js, "for-of requires iterable"); if (is_err(res)) goto done; if (js->flags & F_RETURN) goto done; } js->pos = body_end; js->tok = TOK_SEMICOLON; js->consumed = 0; goto done; } if (!expect(js, TOK_SEMICOLON, &res)) goto done; js->flags |= F_NOEXEC; pos1 = js->pos; if (next(js) != TOK_SEMICOLON) { v = js_expr(js); if (is_err2(&v, &res)) goto done; } if (!expect(js, TOK_SEMICOLON, &res)) goto done; pos2 = js->pos; if (next(js) != TOK_RPAREN) { v = js_expr(js); if (is_err2(&v, &res)) goto done; } if (!expect(js, TOK_RPAREN, &res)) goto done; pos3 = js->pos; v = js_block_or_stmt(js); if (is_err2(&v, &res)) goto done; pos4 = js->pos; while (!(flags & F_NOEXEC)) { js->flags = flags, js->pos = pos1, js->consumed = 1; if (next(js) != TOK_SEMICOLON) { v = resolveprop(js, js_expr(js)); if (is_err2(&v, &res)) goto done; if (!js_truthy(js, v)) break; } jsval_t iter_scope = js_mkundef(); jsval_t loop_var_val = js_mkundef(); if (is_let_loop && let_var_len > 0) { jsoff_t var_off = lkp(js, js->scope, &js->code[let_var_off], let_var_len); if (var_off != 0) { loop_var_val = resolveprop(js, mkval(T_PROP, var_off)); } mkscope(js); iter_scope = js->scope; jsval_t var_key = js_mkstr(js, &js->code[let_var_off], let_var_len); mkprop(js, js->scope, var_key, loop_var_val, false); } js->pos = pos3, js->consumed = 1, js->flags |= F_LOOP; v = js_block_or_stmt(js); if (is_err2(&v, &res)) { if (vtype(iter_scope) != T_UNDEF) delscope(js); goto done; } if (is_let_loop && let_var_len > 0) { jsoff_t iter_var_off = lkp(js, iter_scope, &js->code[let_var_off], let_var_len); if (iter_var_off != 0) { loop_var_val = resolveprop(js, mkval(T_PROP, iter_var_off)); } delscope(js); jsoff_t outer_var_off = lkp(js, js->scope, &js->code[let_var_off], let_var_len); if (outer_var_off != 0) { saveval(js, outer_var_off + sizeof(jsoff_t) * 2, loop_var_val); } } if (label_flags & F_CONTINUE_LABEL) { if (is_this_loop_continue_target(marker_index)) { clear_continue_label(); js->flags &= ~(F_BREAK | F_NOEXEC); js->flags = flags; js->pos = pos2, js->consumed = 1; if (next(js) != TOK_RPAREN) { v = js_expr(js); if (is_err2(&v, &res)) goto done; } continue; } } if (js->flags & F_BREAK) { break; } if (js->flags & F_RETURN) { res = v; break; } js->flags = flags, js->pos = pos2, js->consumed = 1; if (next(js) != TOK_RPAREN) { v = js_expr(js); if (is_err2(&v, &res)) goto done; } } js->pos = pos4, js->tok = TOK_SEMICOLON, js->consumed = 0; done: if (use_label_stack && label_stack && utarray_len(label_stack) > 0) { utarray_pop_back(label_stack); } if (exe) delscope(js); uint8_t preserve = 0; if (js->flags & F_RETURN) { preserve = js->flags & (F_RETURN | F_NOEXEC); } if ((js->flags & F_BREAK) && (label_flags & F_BREAK_LABEL)) { preserve |= (js->flags & (F_BREAK | F_NOEXEC)); } if (label_flags & F_CONTINUE_LABEL) { preserve |= F_BREAK | F_NOEXEC; } js->flags = flags | preserve; return res; } static jsval_t js_while(struct js *js) { uint8_t flags = js->flags, exe = !(flags & F_NOEXEC); jsval_t res = js_mkundef(), v; bool use_label_stack = label_stack && utarray_len(label_stack) > 0; int marker_index = 0; if (use_label_stack) { label_entry_t marker = { .name = NULL, .name_len = 0, .is_loop = true, .is_block = false }; utarray_push_back(label_stack, &marker); marker_index = utarray_len(label_stack) - 1; } js->consumed = 1; if (!expect(js, TOK_LPAREN, &res)) goto done; jsoff_t cond_start = js->pos; js->flags |= F_NOEXEC; v = js_expr(js); if (is_err(v)) { res = v; goto done; } if (!expect(js, TOK_RPAREN, &res)) goto done; jsoff_t body_start = js->pos; v = js_block_or_stmt(js); if (is_err(v)) { res = v; goto done; } jsoff_t body_end = js->pos; if (exe) { while (true) { js->flags = flags; js->pos = cond_start; js->consumed = 1; v = resolveprop(js, js_expr(js)); if (is_err(v)) { res = v; break; } if (!js_truthy(js, v)) break; js->pos = body_start; js->consumed = 1; js->flags = (flags & ~F_NOEXEC) | F_LOOP; v = js_block_or_stmt(js); if (is_err(v)) { res = v; break; } if (label_flags & F_CONTINUE_LABEL) { if (is_this_loop_continue_target(marker_index)) { clear_continue_label(); js->flags &= ~(F_BREAK | F_NOEXEC); continue; } } if (js->flags & F_BREAK) { break; } if (js->flags & F_RETURN) { res = v; break; } } } js->pos = body_end; js->tok = TOK_SEMICOLON; js->consumed = 0; done: if (use_label_stack && label_stack && utarray_len(label_stack) > 0) { utarray_pop_back(label_stack); } uint8_t preserve = 0; if (js->flags & F_RETURN) { preserve = js->flags & (F_RETURN | F_NOEXEC); } if ((js->flags & F_BREAK) && (label_flags & F_BREAK_LABEL)) { preserve |= (js->flags & (F_BREAK | F_NOEXEC)); } if (label_flags & F_CONTINUE_LABEL) { preserve |= F_BREAK | F_NOEXEC; } js->flags = flags | preserve; return res; } static jsval_t js_do_while(struct js *js) { uint8_t flags = js->flags, exe = !(flags & F_NOEXEC); jsval_t res = js_mkundef(), v; bool use_label_stack = label_stack && utarray_len(label_stack) > 0; int marker_index = 0; if (use_label_stack) { label_entry_t marker = { .name = NULL, .name_len = 0, .is_loop = true, .is_block = false }; utarray_push_back(label_stack, &marker); marker_index = utarray_len(label_stack) - 1; } js->consumed = 1; jsoff_t body_start = js->pos; bool is_block = (next(js) == TOK_LBRACE); js->flags |= F_NOEXEC; v = js_block_or_stmt(js); if (is_err(v)) { res = v; goto done; } if (is_block && next(js) == TOK_RBRACE) { js->consumed = 1; } (void) js->pos; if (!expect(js, TOK_WHILE, &res)) goto done; if (!expect(js, TOK_LPAREN, &res)) goto done; jsoff_t cond_start = js->pos; v = js_expr(js); if (is_err(v)) { res = v; goto done; } if (!expect(js, TOK_RPAREN, &res)) goto done; jsoff_t cond_end = js->pos; if (exe) { do { js->pos = body_start; js->consumed = 1; js->flags = (flags & ~F_NOEXEC) | F_LOOP; v = js_block_or_stmt(js); if (is_err(v)) { res = v; break; } if (label_flags & F_CONTINUE_LABEL) { if (is_this_loop_continue_target(marker_index)) { clear_continue_label(); js->flags &= ~(F_BREAK | F_NOEXEC); } else { break; } } if (js->flags & F_BREAK) { break; } if (js->flags & F_RETURN) { res = v; break; } js->flags = flags; js->pos = cond_start; js->consumed = 1; v = resolveprop(js, js_expr(js)); if (is_err(v)) { res = v; break; } } while (js_truthy(js, v)); } js->pos = cond_end; js->consumed = 1; done: if (use_label_stack && label_stack && utarray_len(label_stack) > 0) { utarray_pop_back(label_stack); } uint8_t preserve = 0; if (js->flags & F_RETURN) { preserve = js->flags & (F_RETURN | F_NOEXEC); } if ((js->flags & F_BREAK) && (label_flags & F_BREAK_LABEL)) { preserve |= (js->flags & (F_BREAK | F_NOEXEC)); } if (label_flags & F_CONTINUE_LABEL) { preserve |= F_BREAK | F_NOEXEC; } js->flags = flags | preserve; return res; } static jsval_t js_try(struct js *js) { uint8_t flags = js->flags, exe = !(flags & F_NOEXEC); jsval_t res = js_mkundef(); jsval_t try_result = js_mkundef(); jsval_t catch_result = js_mkundef(); jsval_t finally_result = js_mkundef(); bool had_exception = false; char saved_errmsg[256] = {0}; jsval_t exception_value = js_mkundef(); js->consumed = 1; if (next(js) != TOK_LBRACE) { return js_mkerr(js, "{ expected after try"); } jsoff_t try_start = js->pos; js->flags |= F_NOEXEC; js->consumed = 1; while (next(js) != TOK_EOF && next(js) != TOK_RBRACE) { jsval_t v = js_stmt(js); if (is_err(v)) break; } if (next(js) == TOK_RBRACE) js->consumed = 1; jsoff_t try_end = js->pos; bool has_catch = false; bool has_finally = false; jsoff_t catch_start = 0, catch_end = 0; jsoff_t finally_start = 0, finally_end = 0; jsoff_t catch_param_off = 0, catch_param_len = 0; if (lookahead(js) == TOK_CATCH) { has_catch = true; js->consumed = 1; next(js); js->consumed = 1; if (next(js) == TOK_LPAREN) { js->consumed = 1; if (next(js) == TOK_IDENTIFIER) { catch_param_off = js->toff; catch_param_len = js->tlen; if ((js->flags & F_STRICT) && is_strict_restricted(&js->code[catch_param_off], catch_param_len)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot use '%.*s' as catch parameter in strict mode", (int) catch_param_len, &js->code[catch_param_off]); } js->consumed = 1; } if (next(js) != TOK_RPAREN) return js_mkerr(js, ") expected in catch"); js->consumed = 1; } if (next(js) != TOK_LBRACE) { return js_mkerr(js, "{ expected after catch"); } catch_start = js->pos; js->consumed = 1; while (next(js) != TOK_EOF && next(js) != TOK_RBRACE) { jsval_t v = js_stmt(js); if (is_err(v)) break; } if (next(js) == TOK_RBRACE) js->consumed = 1; catch_end = js->pos; } if (lookahead(js) == TOK_FINALLY) { has_finally = true; js->consumed = 1; next(js); js->consumed = 1; if (next(js) != TOK_LBRACE) { return js_mkerr(js, "{ expected after finally"); } finally_start = js->pos; js->consumed = 1; while (next(js) != TOK_EOF && next(js) != TOK_RBRACE) { jsval_t v = js_stmt(js); if (is_err(v)) break; } if (next(js) == TOK_RBRACE) js->consumed = 1; finally_end = js->pos; } if (!has_catch && !has_finally) { return js_mkerr(js, "try requires catch or finally"); } jsoff_t end_pos = has_finally ? finally_end : (has_catch ? catch_end : try_end); if (exe) { bool try_returned = false; jsval_t try_return_value = js_mkundef(); js->flags = flags & (uint8_t)~F_NOEXEC; js->pos = try_start; js->consumed = 1; while (next(js) != TOK_EOF && next(js) != TOK_RBRACE && !(js->flags & (F_RETURN | F_THROW | F_BREAK))) { try_result = js_stmt(js); if (is_err(try_result)) { had_exception = true; break; } } if (js->flags & F_RETURN) { try_returned = true; try_return_value = try_result; js->flags &= (uint8_t)~(F_RETURN | F_NOEXEC); } if (js->flags & F_THROW) { had_exception = true; js->flags &= (uint8_t)~F_THROW; strncpy(saved_errmsg, js->errmsg, sizeof(saved_errmsg) - 1); saved_errmsg[sizeof(saved_errmsg) - 1] = '\0'; exception_value = js->thrown_value; js->thrown_value = js_mkundef(); js->errmsg[0] = '\0'; } if (next(js) == TOK_RBRACE) js->consumed = 1; bool exception_handled = false; bool catch_returned = false; jsval_t catch_return_value = js_mkundef(); if (had_exception && has_catch) { exception_handled = true; mkscope(js); if (catch_param_len > 0) { jsval_t key = js_mkstr(js, &js->code[catch_param_off], catch_param_len); mkprop(js, js->scope, key, exception_value, false); } js->flags = flags & (uint8_t)~F_NOEXEC; js->pos = catch_start; js->consumed = 1; while (next(js) != TOK_EOF && next(js) != TOK_RBRACE && !(js->flags & (F_RETURN | F_THROW | F_BREAK))) { catch_result = js_stmt(js); if (is_err(catch_result)) break; } if (js->flags & F_RETURN) { catch_returned = true; catch_return_value = catch_result; js->flags &= (uint8_t)~(F_RETURN | F_NOEXEC); } if (next(js) == TOK_RBRACE) js->consumed = 1; delscope(js); if (js->flags & F_THROW) { exception_handled = false; strncpy(saved_errmsg, js->errmsg, sizeof(saved_errmsg) - 1); saved_errmsg[sizeof(saved_errmsg) - 1] = '\0'; } else { res = catch_result; } } if (has_finally) { uint8_t pre_finally_flags = js->flags; bool had_pre_finally_exception = (js->flags & F_THROW) != 0; char pre_finally_errmsg[256] = {0}; if (had_pre_finally_exception) { strncpy(pre_finally_errmsg, js->errmsg, sizeof(pre_finally_errmsg) - 1); js->flags &= (uint8_t)~F_THROW; js->errmsg[0] = '\0'; } js->flags = flags & (uint8_t)~F_NOEXEC; js->pos = finally_start; js->consumed = 1; while (next(js) != TOK_EOF && next(js) != TOK_RBRACE && !(js->flags & (F_RETURN | F_THROW | F_BREAK))) { finally_result = js_stmt(js); if (is_err(finally_result)) break; } if (next(js) == TOK_RBRACE) js->consumed = 1; if (!(js->flags & (F_RETURN | F_THROW))) { if (had_pre_finally_exception) { js->flags = pre_finally_flags; strncpy(js->errmsg, pre_finally_errmsg, sizeof(js->errmsg) - 1); } else if (had_exception && !exception_handled) { js->flags |= F_THROW; strncpy(js->errmsg, saved_errmsg, sizeof(js->errmsg) - 1); } else if (catch_returned) { js->flags |= F_RETURN; res = catch_return_value; } else if (try_returned) { js->flags |= F_RETURN; res = try_return_value; } } } else if (had_exception && !exception_handled) { js->flags |= F_THROW; strncpy(js->errmsg, saved_errmsg, sizeof(js->errmsg) - 1); res = mkval(T_ERR, 0); } else if (catch_returned) { js->flags |= F_RETURN; res = catch_return_value; } else if (try_returned) { js->flags |= F_RETURN; res = try_return_value; } if (!had_exception && !try_returned && !(js->flags & (F_RETURN | F_THROW))) { res = try_result; } } js->pos = end_pos; js->tok = TOK_SEMICOLON; js->consumed = 0; return res; } static bool label_exists(const char *name, jsoff_t len, bool check_loop) { if (!label_stack) return false; int depth = utarray_len(label_stack); for (int i = depth - 1; i >= 0; i--) { label_entry_t *entry = (label_entry_t *)utarray_eltptr(label_stack, i); if (entry && entry->name_len == len && memcmp(entry->name, name, len) == 0) { if (check_loop && !entry->is_loop) { return false; } return true; } } return false; } static bool continue_targets_innermost_loop(void) { if (!(label_flags & F_CONTINUE_LABEL)) return false; if (!label_stack || !continue_target_label) return false; int depth = utarray_len(label_stack); for (int i = depth - 1; i >= 0; i--) { label_entry_t *entry = (label_entry_t *)utarray_eltptr(label_stack, i); if (entry && entry->is_loop) { if (entry->name_len == continue_target_label_len && memcmp(entry->name, continue_target_label, continue_target_label_len) == 0) { return true; } return false; } } return false; } static bool is_this_loop_continue_target(int marker_index) { if (!(label_flags & F_CONTINUE_LABEL)) return false; if (!label_stack || !continue_target_label) return false; if (marker_index <= 0) return false; label_entry_t *entry = (label_entry_t *)utarray_eltptr(label_stack, marker_index - 1); if (!entry) return false; if (entry->name == NULL) return false; if (!entry->is_loop) return false; if (entry->name_len == continue_target_label_len && memcmp(entry->name, continue_target_label, continue_target_label_len) == 0) { return true; } return false; } static jsval_t js_break(struct js *js) { js->consumed = 1; uint8_t nxt = next(js); if (nxt == TOK_IDENTIFIER && !js->had_newline) { const char *label = &js->code[js->toff]; jsoff_t label_len = js->tlen; js->consumed = 1; if (js->flags & F_NOEXEC) { return js_mkundef(); } if (!label_exists(label, label_len, false)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "undefined label '%.*s'", (int)label_len, label); } break_target_label = label; break_target_label_len = label_len; label_flags |= F_BREAK_LABEL; js->flags |= F_BREAK | F_NOEXEC; return js_mkundef(); } if (js->flags & F_NOEXEC) { return js_mkundef(); } if (!(js->flags & (F_LOOP | F_SWITCH))) { bool in_labeled_block = false; if (label_stack) { int depth = utarray_len(label_stack); for (int i = depth - 1; i >= 0; i--) { label_entry_t *entry = (label_entry_t *)utarray_eltptr(label_stack, i); if (entry && entry->is_block) { in_labeled_block = true; break; } } } if (!in_labeled_block) { return js_mkerr(js, "not in loop or switch"); } } js->flags |= F_BREAK | F_NOEXEC; return js_mkundef(); } static jsval_t js_continue(struct js *js) { js->consumed = 1; uint8_t nxt = next(js); if (nxt == TOK_IDENTIFIER && !js->had_newline) { const char *label = &js->code[js->toff]; jsoff_t label_len = js->tlen; js->consumed = 1; if (js->flags & F_NOEXEC) { return js_mkundef(); } if (!label_exists(label, label_len, true)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "undefined label '%.*s' or not a loop", (int)label_len, label); } continue_target_label = label; continue_target_label_len = label_len; label_flags |= F_CONTINUE_LABEL; js->flags |= F_BREAK | F_NOEXEC; return js_mkundef(); } if (js->flags & F_NOEXEC) { return js_mkundef(); } if (!(js->flags & F_LOOP)) { return js_mkerr(js, "not in loop"); } js->flags |= F_NOEXEC; return js_mkundef(); } static jsval_t js_return(struct js *js) { uint8_t exe = !(js->flags & F_NOEXEC); uint8_t in_func = js->flags & F_CALL; js->consumed = 1; jsval_t res = js_mkundef(); uint8_t nxt = next(js); if (nxt != TOK_SEMICOLON && nxt != TOK_RBRACE && nxt != TOK_EOF && !js->had_newline) { res = resolveprop(js, js_expr_comma(js)); } if (exe && !in_func) return js_mkundef(); if (exe) { js->pos = js->clen; js->flags |= F_RETURN | F_NOEXEC; } return res; } static jsval_t js_switch(struct js *js) { uint8_t flags = js->flags, exe = !(flags & F_NOEXEC); jsval_t res = js_mkundef(); js->consumed = 1; if (!expect(js, TOK_LPAREN, &res)) return res; jsoff_t switch_expr_start = js->pos; uint8_t saved_flags = js->flags; js->flags |= F_NOEXEC; jsval_t switch_expr = js_expr(js); js->flags = saved_flags; if (is_err(switch_expr)) return switch_expr; if (!expect(js, TOK_RPAREN, &res)) return res; if (!expect(js, TOK_LBRACE, &res)) return res; typedef struct { jsoff_t case_expr_start; jsoff_t case_expr_end; jsoff_t body_start; bool is_default; } CaseInfo; CaseInfo cases[64]; int case_count = 0; js->flags |= F_NOEXEC; while (next(js) != TOK_RBRACE && next(js) != TOK_EOF && case_count < 64) { if (next(js) == TOK_CASE) { js->consumed = 1; cases[case_count].is_default = false; cases[case_count].case_expr_start = js->pos; jsval_t case_val = js_expr(js); if (is_err(case_val)) { js->flags = flags; return case_val; } cases[case_count].case_expr_end = js->pos; if (!expect(js, TOK_COLON, &res)) { js->flags = flags; return res; } cases[case_count].body_start = js->pos; case_count++; while (next(js) != TOK_EOF && next(js) != TOK_CASE && next(js) != TOK_DEFAULT && next(js) != TOK_RBRACE) { jsval_t stmt = js_stmt(js); if (is_err(stmt)) { js->flags = flags; return stmt; } } } else if (next(js) == TOK_DEFAULT) { js->consumed = 1; cases[case_count].is_default = true; cases[case_count].case_expr_start = 0; cases[case_count].case_expr_end = 0; if (!expect(js, TOK_COLON, &res)) { js->flags = flags; return res; } cases[case_count].body_start = js->pos; case_count++; while (next(js) != TOK_EOF && next(js) != TOK_CASE && next(js) != TOK_DEFAULT && next(js) != TOK_RBRACE) { jsval_t stmt = js_stmt(js); if (is_err(stmt)) { js->flags = flags; return stmt; } } } else { break; } } if (!expect(js, TOK_RBRACE, &res)) { js->flags = flags; return res; } jsoff_t end_pos = js->pos; if (exe) { js->pos = switch_expr_start; js->consumed = 1; js->flags = flags; jsval_t switch_val = resolveprop(js, js_expr(js)); if (is_err(switch_val)) { js->pos = end_pos; js->flags = flags; return switch_val; } int matching_case = -1; int default_case = -1; for (int i = 0; i < case_count; i++) { if (cases[i].is_default) { default_case = i; continue; } js->pos = cases[i].case_expr_start; js->consumed = 1; js->flags = flags; jsval_t case_val = resolveprop(js, js_expr(js)); if (is_err(case_val)) { js->pos = end_pos; js->flags = flags; return case_val; } bool matches = false; if (vtype(switch_val) == vtype(case_val)) { if (vtype(switch_val) == T_NUM) { matches = tod(switch_val) == tod(case_val); } else if (vtype(switch_val) == T_STR) { jsoff_t n1, off1 = vstr(js, switch_val, &n1); jsoff_t n2, off2 = vstr(js, case_val, &n2); matches = n1 == n2 && memcmp(&js->mem[off1], &js->mem[off2], n1) == 0; } else if (vtype(switch_val) == T_BOOL) { matches = vdata(switch_val) == vdata(case_val); } else { matches = vdata(switch_val) == vdata(case_val); } } if (matches) { matching_case = i; break; } } if (matching_case < 0 && default_case >= 0) matching_case = default_case; if (matching_case >= 0) { js->flags = (flags & ~F_NOEXEC) | F_SWITCH; for (int i = matching_case; i < case_count; i++) { js->pos = cases[i].body_start; js->consumed = 1; while (next(js) != TOK_EOF && next(js) != TOK_CASE && next(js) != TOK_DEFAULT && next(js) != TOK_RBRACE && !(js->flags & (F_BREAK | F_RETURN | F_THROW))) { res = js_stmt(js); if (is_err(res)) { js->pos = end_pos; uint8_t preserve = 0; if (js->flags & F_RETURN) { preserve = js->flags & (F_RETURN | F_NOEXEC); } if (js->flags & F_THROW) { preserve = js->flags & (F_THROW | F_NOEXEC); } js->flags = flags | preserve; return res; } } if (js->flags & F_BREAK) { js->flags &= ~F_BREAK; break; } if (js->flags & (F_RETURN | F_THROW)) break; } } } js->pos = end_pos; js->tok = TOK_SEMICOLON; js->consumed = 0; uint8_t preserve = 0; if (js->flags & F_RETURN) { preserve = js->flags & (F_RETURN | F_NOEXEC); } if (js->flags & F_THROW) { preserve = js->flags & (F_THROW | F_NOEXEC); } js->flags = (flags & ~F_SWITCH) | preserve; return res; } static jsval_t js_with(struct js *js) { uint8_t flags = js->flags, exe = !(flags & F_NOEXEC); jsval_t res = js_mkundef(); if (flags & F_STRICT) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "with statement not allowed in strict mode"); } js->consumed = 1; if (!expect(js, TOK_LPAREN, &res)) return res; jsval_t obj_expr = js_expr(js); if (is_err(obj_expr)) return obj_expr; if (!expect(js, TOK_RPAREN, &res)) return res; if (exe) { jsval_t obj = resolveprop(js, obj_expr); if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR && vtype(obj) != T_FUNC) { return js_mkerr(js, "with requires object"); } jsval_t with_obj = obj; if (vtype(obj) == T_FUNC) { with_obj = mkval(T_OBJ, vdata(obj)); } jsoff_t parent_scope_offset = (jsoff_t) vdata(js->scope); if (global_scope_stack == NULL) utarray_new(global_scope_stack, &jsoff_icd); utarray_push_back(global_scope_stack, &parent_scope_offset); jsval_t with_scope = mkentity(js, 0 | T_OBJ, &parent_scope_offset, sizeof(parent_scope_offset)); jsval_t with_marker = js_mkstr(js, "__with_object__", 15); jsval_t with_ref = mkprop(js, with_scope, with_marker, with_obj, false); if (is_err(with_ref)) return with_ref; jsval_t saved_scope = js->scope; js->scope = with_scope; res = js_block_or_stmt(js); if (global_scope_stack && utarray_len(global_scope_stack) > 0) utarray_pop_back(global_scope_stack); js->scope = saved_scope; } else { res = js_block_or_stmt(js); } js->flags = flags; return res; } static jsval_t js_class_expr(struct js *js, bool is_expression); static jsval_t js_class_decl(struct js *js) { return js_class_expr(js, false); } static jsval_t js_class_expr(struct js *js, bool is_expression) { uint8_t exe = !(js->flags & F_NOEXEC); js->consumed = 1; jsoff_t class_name_off = 0, class_name_len = 0; char *class_name = NULL; if (next(js) == TOK_IDENTIFIER) { if (!(js->tlen == 7 && streq(&js->code[js->toff], js->tlen, "extends", 7))) { class_name_off = js->toff; class_name_len = js->tlen; class_name = (char *) &js->code[class_name_off]; js->consumed = 1; } } else if (!is_expression) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "class name expected"); } jsoff_t super_off = 0, super_len = 0; if (next(js) == TOK_IDENTIFIER && js->tlen == 7 && streq(&js->code[js->toff], js->tlen, "extends", 7)) { js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); super_off = js->toff; super_len = js->tlen; js->consumed = 1; } EXPECT(TOK_LBRACE, ); jsoff_t class_body_start = js->pos; jsoff_t constructor_params_start = 0; jsoff_t constructor_body_start = 0, constructor_body_end = 0; uint8_t save_flags = js->flags; js->flags |= F_NOEXEC; typedef struct { jsoff_t name_off, name_len, fn_start, fn_end; bool is_async; bool is_static; bool is_field; bool is_getter; bool is_setter; jsoff_t field_start, field_end; } MethodInfo; MethodInfo methods[32]; int method_count = 0; uint8_t class_tok; while ((class_tok = next(js)) != TOK_RBRACE && class_tok != TOK_EOF && method_count < 32) { bool is_async_method = false; bool is_static_member = false; bool is_getter_method = false; bool is_setter_method = false; if (next(js) == TOK_STATIC) { is_static_member = true; js->consumed = 1; } if (next(js) == TOK_ASYNC) { is_async_method = true; js->consumed = 1; } if (next(js) == TOK_IDENTIFIER) { bool is_get = (js->tlen == 3 && memcmp(&js->code[js->toff], "get", 3) == 0); bool is_set = (js->tlen == 3 && memcmp(&js->code[js->toff], "set", 3) == 0); if (is_get || is_set) { jsoff_t saved_pos = js->pos; jsoff_t saved_toff = js->toff; jsoff_t saved_tlen = js->tlen; uint8_t saved_tok = js->tok; js->consumed = 1; if (next(js) == TOK_IDENTIFIER) { is_getter_method = is_get; is_setter_method = is_set; } else { js->pos = saved_pos; js->toff = saved_toff; js->tlen = saved_tlen; js->tok = saved_tok; js->consumed = 0; } } } if (next(js) != TOK_IDENTIFIER && (next(js) < TOK_ASYNC || next(js) > TOK_STATIC)) { js->flags = save_flags; return js_mkerr_typed(js, JS_ERR_SYNTAX, "method name expected"); } jsoff_t method_name_off = js->toff, method_name_len = js->tlen; js->consumed = 1; if (next(js) == TOK_ASSIGN) { js->consumed = 1; jsoff_t field_start = js->pos; int depth = 0; bool done = false; while (!done && next(js) != TOK_EOF) { uint8_t tok = next(js); if (depth == 0 && (tok == TOK_SEMICOLON || tok == TOK_RBRACE || (tok == TOK_IDENTIFIER && js->pos > field_start + 1))) { if (tok != TOK_SEMICOLON && tok != TOK_RBRACE) { js->consumed = 0; } done = true; } else if (tok == TOK_LPAREN || tok == TOK_LBRACKET || tok == TOK_LBRACE) { depth++; js->consumed = 1; } else if (tok == TOK_RPAREN || tok == TOK_RBRACKET || tok == TOK_RBRACE) { if (depth == 0) { done = true; } else { depth--; js->consumed = 1; } } else { js->consumed = 1; } } jsoff_t field_end = js->pos; if (next(js) == TOK_SEMICOLON) js->consumed = 1; methods[method_count].name_off = method_name_off; methods[method_count].name_len = method_name_len; methods[method_count].is_static = is_static_member; methods[method_count].is_async = false; methods[method_count].is_field = true; methods[method_count].field_start = field_start; methods[method_count].field_end = field_end; methods[method_count].fn_start = 0; methods[method_count].fn_end = 0; method_count++; continue; } if (next(js) == TOK_SEMICOLON || (next(js) != TOK_LPAREN && next(js) == TOK_IDENTIFIER)) { if (next(js) == TOK_SEMICOLON) js->consumed = 1; methods[method_count].name_off = method_name_off; methods[method_count].name_len = method_name_len; methods[method_count].is_static = is_static_member; methods[method_count].is_async = false; methods[method_count].is_field = true; methods[method_count].field_start = 0; methods[method_count].field_end = 0; methods[method_count].fn_start = 0; methods[method_count].fn_end = 0; method_count++; continue; } EXPECT(TOK_LPAREN, js->flags = save_flags); jsoff_t method_params_start = js->pos - 1; if (!parse_func_params(js, &save_flags, NULL)) { js->flags = save_flags; return js_mkerr_typed(js, JS_ERR_SYNTAX, "invalid method parameters"); } EXPECT(TOK_RPAREN, js->flags = save_flags); EXPECT(TOK_LBRACE, js->flags = save_flags); jsoff_t method_body_start = js->pos - 1; js->consumed = 0; jsval_t blk = js_block(js, false); if (is_err(blk)) { js->flags = save_flags; return blk; } jsoff_t method_body_end = js->pos; if (streq(&js->code[method_name_off], method_name_len, "constructor", 11)) { constructor_params_start = method_params_start; constructor_body_start = method_body_start + 1; constructor_body_end = method_body_end; } else { methods[method_count].name_off = method_name_off; methods[method_count].name_len = method_name_len; methods[method_count].fn_start = method_params_start; methods[method_count].fn_end = method_body_end; methods[method_count].is_async = is_async_method; methods[method_count].is_static = is_static_member; methods[method_count].is_field = false; methods[method_count].is_getter = is_getter_method; methods[method_count].is_setter = is_setter_method; methods[method_count].field_start = 0; methods[method_count].field_end = 0; method_count++; } js->consumed = 1; } EXPECT(TOK_RBRACE, js->flags = save_flags); js->flags = save_flags; if (exe) { jsval_t super_constructor = js_mkundef(); jsval_t super_proto = js_mknull(); if (super_len > 0) { jsval_t super_val = lookup(js, &js->code[super_off], super_len); if (is_err(super_val)) return super_val; super_constructor = resolveprop(js, super_val); if (vtype(super_constructor) != T_FUNC && vtype(super_constructor) != T_CFUNC) { return js_mkerr(js, "super class must be a constructor"); } jsval_t super_obj = mkval(T_OBJ, vdata(super_constructor)); jsoff_t super_proto_off = lkp_interned(js, super_obj, INTERN_PROTOTYPE, 9); if (super_proto_off != 0) { super_proto = resolveprop(js, mkval(T_PROP, super_proto_off)); } } jsval_t proto = js_mkobj(js); if (is_err(proto)) return proto; if (vtype(super_proto) == T_OBJ) { set_proto(js, proto, super_proto); } else { jsval_t object_proto = get_ctor_proto(js, "Object", 6); if (vtype(object_proto) == T_OBJ) set_proto(js, proto, object_proto); } jsval_t func_scope = mkobj(js, (jsoff_t) vdata(js->scope)); if (super_len > 0) { jsval_t super_key = js_mkstr(js, "super", 5); if (is_err(super_key)) return super_key; jsval_t res_super = setprop(js, func_scope, super_key, super_constructor); if (is_err(res_super)) return res_super; } for (int i = 0; i < method_count; i++) { if (methods[i].is_static) continue; if (methods[i].is_field) continue; jsval_t method_name = js_mkstr(js, &js->code[methods[i].name_off], methods[i].name_len); if (is_err(method_name)) return method_name; jsoff_t mlen = methods[i].fn_end - methods[i].fn_start; jsval_t method_code = js_mkstr(js, &js->code[methods[i].fn_start], mlen); if (is_err(method_code)) return method_code; jsval_t method_obj = mkobj(js, 0); if (is_err(method_obj)) return method_obj; jsval_t mcode_key = js_mkstr(js, "__code", 6); if (is_err(mcode_key)) return mcode_key; jsval_t mres = setprop(js, method_obj, mcode_key, method_code); if (is_err(mres)) return mres; if (methods[i].is_async) { jsval_t async_key = js_mkstr(js, "__async", 7); if (is_err(async_key)) return async_key; jsval_t async_val = mkval(T_BOOL, 1); jsval_t res_async = setprop(js, method_obj, async_key, async_val); if (is_err(res_async)) return res_async; } jsval_t mscope_key = js_mkstr(js, "__scope", 7); if (is_err(mscope_key)) return mscope_key; jsval_t mscope_res = setprop(js, method_obj, mscope_key, func_scope); if (is_err(mscope_res)) return mscope_res; jsval_t method_func = mkval(T_FUNC, (unsigned long) vdata(method_obj)); if (methods[i].is_getter || methods[i].is_setter) { jsoff_t name_len; const char *name_str = (const char *)&js->mem[vstr(js, method_name, &name_len)]; if (methods[i].is_getter) { js_set_getter_desc(js, proto, name_str, name_len, method_func, JS_DESC_C); } else { js_set_setter_desc(js, proto, name_str, name_len, method_func, JS_DESC_C); } } else { jsval_t set_res = setprop(js, proto, method_name, method_func); if (is_err(set_res)) return set_res; } } jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; if (constructor_params_start > 0 && constructor_body_start > 0) { jsoff_t code_len = constructor_body_end - constructor_params_start; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t ctor_str = js_mkstr(js, &js->code[constructor_params_start], code_len); if (is_err(ctor_str)) return ctor_str; jsval_t res2 = setprop(js, func_obj, code_key, ctor_str); if (is_err(res2)) return res2; } else { jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t default_ctor; if (super_len > 0) { default_ctor = js_mkstr(js, "(...args){super(...args);}", 26); } else { default_ctor = js_mkstr(js, "(){}", 4); } if (is_err(default_ctor)) return default_ctor; jsval_t res2 = setprop(js, func_obj, code_key, default_ctor); if (is_err(res2)) return res2; } int field_count = 0; for (int i = 0; i < method_count; i++) { if (methods[i].is_static) continue; if (methods[i].is_field) field_count++; } if (field_count > 0) { size_t metadata_size = field_count * sizeof(jsoff_t) * 4; jsoff_t meta_len = (jsoff_t) (metadata_size + 1); jsoff_t meta_header = (jsoff_t) ((meta_len << 2) | T_STR); jsoff_t meta_off = js_alloc(js, meta_len + sizeof(meta_header)); if (meta_off == (jsoff_t) ~0) return js_mkerr(js, "oom"); memcpy(&js->mem[meta_off], &meta_header, sizeof(meta_header)); jsoff_t *metadata = (jsoff_t *)(&js->mem[meta_off + sizeof(meta_header)]); int meta_idx = 0; for (int i = 0; i < method_count; i++) { if (methods[i].is_static) continue; if (!methods[i].is_field) continue; metadata[meta_idx * 4 + 0] = methods[i].name_off; metadata[meta_idx * 4 + 1] = methods[i].name_len; metadata[meta_idx * 4 + 2] = methods[i].field_start; metadata[meta_idx * 4 + 3] = methods[i].field_end; meta_idx++; } js->mem[meta_off + sizeof(meta_header) + metadata_size] = 0; jsval_t fields_meta = mkval(T_STR, meta_off); jsval_t fields_key = js_mkstr(js, "__fields", 8); if (is_err(fields_key)) return fields_key; jsval_t res_fields = setprop(js, func_obj, fields_key, fields_meta); if (is_err(res_fields)) return res_fields; jsval_t count_key = js_mkstr(js, "__field_count", 13); if (is_err(count_key)) return count_key; jsval_t res_count = setprop(js, func_obj, count_key, tov((double)field_count)); if (is_err(res_count)) return res_count; jsval_t src_key = js_mkstr(js, "__source", 8); if (is_err(src_key)) return src_key; jsval_t src_ref = js_mkstr(js, js->code, js->clen); if (is_err(src_ref)) return src_ref; jsval_t res_src = setprop(js, func_obj, src_key, src_ref); if (is_err(res_src)) return res_src; } jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; jsval_t res3 = setprop(js, func_obj, scope_key, func_scope); if (is_err(res3)) return res3; jsval_t name_key = js_mkstr(js, "name", 4); if (is_err(name_key)) return name_key; jsval_t name_val = class_name_len > 0 ? js_mkstr(js, class_name, class_name_len) : js_mkstr(js, "", 0); if (is_err(name_val)) return name_val; jsval_t res_name = setprop(js, func_obj, name_key, name_val); if (is_err(res_name)) return res_name; jsval_t proto_key = js_mkstr(js, "prototype", 9); if (is_err(proto_key)) return proto_key; jsval_t proto_res = setprop(js, func_obj, proto_key, proto); if (is_err(proto_res)) return proto_res; jsval_t constructor = mkval(T_FUNC, (unsigned long) vdata(func_obj)); if (class_name_len > 0) { if (lkp(js, js->scope, class_name, class_name_len) > 0) { return js_mkerr(js, "'%.*s' already declared", (int) class_name_len, class_name); } jsval_t x = mkprop(js, js->scope, js_mkstr(js, class_name, class_name_len), constructor, false); if (is_err(x)) return x; } for (int i = 0; i < method_count; i++) { if (!methods[i].is_static) continue; jsval_t member_name = js_mkstr(js, &js->code[methods[i].name_off], methods[i].name_len); if (is_err(member_name)) return member_name; if (methods[i].is_field) { jsval_t field_val = js_mkundef(); if (methods[i].field_start > 0 && methods[i].field_end > methods[i].field_start) { field_val = js_eval_slice(js, methods[i].field_start, methods[i].field_end - methods[i].field_start); field_val = resolveprop(js, field_val); } jsval_t set_res = setprop(js, func_obj, member_name, field_val); if (is_err(set_res)) return set_res; } else { jsoff_t mlen = methods[i].fn_end - methods[i].fn_start; jsval_t method_code = js_mkstr(js, &js->code[methods[i].fn_start], mlen); if (is_err(method_code)) return method_code; jsval_t method_obj = mkobj(js, 0); if (is_err(method_obj)) return method_obj; jsval_t mcode_key = js_mkstr(js, "__code", 6); if (is_err(mcode_key)) return mcode_key; jsval_t mres = setprop(js, method_obj, mcode_key, method_code); if (is_err(mres)) return mres; jsval_t mscope_key = js_mkstr(js, "__scope", 7); if (is_err(mscope_key)) return mscope_key; jsval_t mscope_res = setprop(js, method_obj, mscope_key, func_scope); if (is_err(mscope_res)) return mscope_res; jsval_t method_func = mkval(T_FUNC, (unsigned long) vdata(method_obj)); jsval_t set_res = setprop(js, func_obj, member_name, method_func); if (is_err(set_res)) return set_res; } } (void) class_body_start; return constructor; } (void) class_body_start; return js_mkundef(); } static void js_throw_handle(struct js *js, jsval_t *res) { js->consumed = 1; jsval_t throw_val = js_expr(js); if (js->flags & F_NOEXEC) { *res = js_mkundef(); } else { throw_val = resolveprop(js, throw_val); if (is_err(throw_val)) { *res = throw_val; } else { *res = js_throw(js, throw_val); } } } static jsval_t find_var_scope(struct js *js) { if ((js->flags & F_CALL) && global_scope_stack && utarray_len(global_scope_stack) > 0) { jsoff_t *scope_off = (jsoff_t *)utarray_eltptr(global_scope_stack, 0); if (scope_off && *scope_off != 0) return mkval(T_OBJ, *scope_off); } jsval_t scope = js->scope; jsoff_t eval_marker = lkp(js, scope, "__strict_eval_scope__", 21); if (eval_marker != 0) return scope; while (vdata(upper(js, scope)) != 0) { jsval_t parent = upper(js, scope); jsoff_t parent_eval_marker = lkp(js, parent, "__strict_eval_scope__", 21); if (parent_eval_marker != 0) return scope; scope = parent; } return scope; } static jsval_t js_var_decl(struct js *js) { uint8_t exe = !(js->flags & F_NOEXEC); jsval_t var_scope = find_var_scope(js); js->consumed = 1; for (;;) { EXPECT(TOK_IDENTIFIER, ); js->consumed = 0; jsoff_t noff = js->toff, nlen = js->tlen; char *name = (char *) &js->code[noff]; if (exe && (js->flags & F_STRICT) && is_strict_restricted(name, nlen)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot use '%.*s' as variable name in strict mode", (int) nlen, name); } if (exe && (js->flags & F_STRICT) && is_strict_reserved(name, nlen)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "'%.*s' is reserved in strict mode", (int) nlen, name); } jsval_t v = js_mkundef(); bool has_initializer = false; js->consumed = 1; if (next(js) == TOK_ASSIGN) { js->consumed = 1; v = js_expr(js); if (is_err(v)) return v; has_initializer = true; } if (exe) { char decoded_name[256]; size_t decoded_len = decode_ident_escapes(name, nlen, decoded_name, sizeof(decoded_name)); jsoff_t existing_off = lkp(js, var_scope, decoded_name, decoded_len); if (existing_off > 0) { if (has_initializer && !is_err(v)) { jsval_t key_val = js_mkstr(js, decoded_name, decoded_len); setprop(js, var_scope, key_val, resolveprop(js, v)); } } else { jsval_t x = mkprop(js, var_scope, js_mkstr(js, decoded_name, decoded_len), resolveprop(js, v), false); if (is_err(x)) return x; } } uint8_t var_next = next(js); if (var_next == TOK_SEMICOLON || var_next == TOK_EOF || var_next == TOK_RBRACE || js->had_newline) break; EXPECT(TOK_COMMA, ); } return js_mkundef(); } static void js_var(struct js *js, jsval_t *res) { if ((js->flags & F_STRICT) && !js->var_warning_shown) { fprintf(stderr, "Warning: 'var' is deprecated, use 'let' or 'const' instead\n"); js->var_warning_shown = true; } *res = js_var_decl(js); } static void js_async(struct js *js, jsval_t *res) { js->consumed = 1; if (next(js) == TOK_FUNC) { *res = js_func_decl_async(js); return; } *res = js_mkerr_typed(js, JS_ERR_SYNTAX, "async must be followed by function"); } static jsval_t js_stmt(struct js *js); static bool is_break_target(const char *name, jsoff_t len) { if (!(label_flags & F_BREAK_LABEL)) return false; if (break_target_label_len != len) return false; return memcmp(break_target_label, name, len) == 0; } static bool is_continue_target(const char *name, jsoff_t len) { if (!(label_flags & F_CONTINUE_LABEL)) return false; if (continue_target_label_len != len) return false; return memcmp(continue_target_label, name, len) == 0; } static void clear_break_label(void) { break_target_label = NULL; break_target_label_len = 0; label_flags &= ~F_BREAK_LABEL; } static void clear_continue_label(void) { continue_target_label = NULL; continue_target_label_len = 0; label_flags &= ~F_CONTINUE_LABEL; } static jsval_t js_labeled_stmt(struct js *js, const char *label, jsoff_t label_len) { uint8_t flags = js->flags; jsval_t res = js_mkundef(); if (!label_stack) { utarray_new(label_stack, &label_entry_icd); } uint8_t next_tok = next(js); bool is_loop = (next_tok == TOK_WHILE || next_tok == TOK_DO || next_tok == TOK_FOR); bool is_block = (next_tok == TOK_LBRACE); label_entry_t entry = { .name = label, .name_len = label_len, .is_loop = is_loop, .is_block = is_block || !is_loop }; utarray_push_back(label_stack, &entry); if (is_loop && !(flags & F_NOEXEC)) { res = js_stmt_impl(js); if ((js->flags & F_BREAK) && is_break_target(label, label_len)) { js->flags &= ~(F_BREAK | F_NOEXEC); clear_break_label(); res = js_mkundef(); } if ((label_flags & F_CONTINUE_LABEL) && is_continue_target(label, label_len)) { clear_continue_label(); } } else if (is_loop && (flags & F_NOEXEC)) { res = js_stmt_impl(js); } else { res = js_stmt_impl(js); if ((js->flags & F_BREAK) && is_break_target(label, label_len)) { js->flags &= ~(F_BREAK | F_NOEXEC); js->flags |= (flags & F_NOEXEC); clear_break_label(); res = js_mkundef(); } } if (label_stack && utarray_len(label_stack) > 0) { utarray_pop_back(label_stack); } return res; } static jsval_t js_stmt_impl(struct js *js) { jsval_t res; // if (js->brk > js->gct) js_gc(js); disabled uint8_t stmt_tok = next(js); switch (stmt_tok) { case TOK_SEMICOLON: res = js_mkundef(); break; case TOK_CASE: case TOK_CATCH: case TOK_DEFAULT: case TOK_FINALLY: res = js_mkerr(js, "SyntaxError '%.*s'", (int) js->tlen, js->code + js->toff); break; case TOK_YIELD: res = js_mkerr(js, " '%.*s' not implemented", (int) js->tlen, js->code + js->toff); break; case TOK_IMPORT: res = js_import_stmt(js); break; case TOK_EXPORT: res = js_export_stmt(js); break; case TOK_THROW: js_throw_handle(js, &res); break; case TOK_VAR: js_var(js, &res); break; case TOK_ASYNC: js_async(js, &res); break; case TOK_WITH: res = js_with(js); break; case TOK_SWITCH: res = js_switch(js); break; case TOK_WHILE: res = js_while(js); break; case TOK_DO: res = js_do_while(js); break; case TOK_DEBUGGER: js->consumed = 1; res = js_mkundef(); break; case TOK_CONTINUE: res = js_continue(js); break; case TOK_BREAK: res = js_break(js); break; case TOK_LET: res = js_let(js); break; case TOK_CONST: res = js_const(js); break; case TOK_FUNC: res = js_func_decl(js); break; case TOK_CLASS: res = js_class_decl(js); break; case TOK_IF: res = js_if(js); break; case TOK_LBRACE: res = js_block(js, !(js->flags & F_NOEXEC)); break; case TOK_FOR: res = js_for(js); break; case TOK_RETURN: res = js_return(js); break; case TOK_TRY: res = js_try(js); break; default: res = resolveprop(js, js_expr(js)); while (next(js) == TOK_COMMA) { js->consumed = 1; res = resolveprop(js, js_expr(js)); } break; } bool is_block_statement = ( stmt_tok == TOK_FUNC || stmt_tok == TOK_CLASS || stmt_tok == TOK_EXPORT || stmt_tok == TOK_IMPORT || stmt_tok == TOK_IF || stmt_tok == TOK_WHILE || stmt_tok == TOK_DO || stmt_tok == TOK_FOR || stmt_tok == TOK_SWITCH || stmt_tok == TOK_TRY || stmt_tok == TOK_LBRACE || stmt_tok == TOK_ASYNC ); if (is_err(res)) return res; if (!is_block_statement) { int next_tok = next(js); bool asi_applies = js->had_newline || next_tok == TOK_EOF || next_tok == TOK_RBRACE; bool missing_semicolon = next_tok != TOK_SEMICOLON && !asi_applies; if (missing_semicolon) return js_mkerr_typed(js, JS_ERR_SYNTAX, "; expected"); if (next_tok == TOK_SEMICOLON) js->consumed = 1; } return res; } static jsval_t js_stmt(struct js *js) { uint8_t tok = next(js); if (tok == TOK_IDENTIFIER) { js_parse_state_t saved_state; JS_SAVE_STATE(js, saved_state); jsoff_t saved_toff = js->toff; jsoff_t saved_tlen = js->tlen; const char *potential_label = &js->code[js->toff]; jsoff_t potential_label_len = js->tlen; js->consumed = 1; if (next(js) == TOK_COLON) { js->consumed = 1; return js_labeled_stmt(js, potential_label, potential_label_len); } JS_RESTORE_STATE(js, saved_state); js->toff = saved_toff; js->tlen = saved_tlen; } return js_stmt_impl(js); } static jsval_t builtin_String(struct js *js, jsval_t *args, int nargs) { jsval_t sval; if (nargs == 0) { sval = js_mkstr(js, "", 0); } else { jsval_t arg = args[0]; if (vtype(arg) == T_STR) { sval = arg; } else { const char *str = js_str(js, arg); sval = js_mkstr(js, str, strlen(str)); } } if (vtype(js->this_val) == T_OBJ && lkp(js, js->this_val, "__primitive_value__", 19) == 0) { setprop(js, js->this_val, js_mkstr(js, "__primitive_value__", 19), sval); jsval_t proto = get_ctor_proto(js, "String", 6); if (vtype(proto) == T_OBJ) set_proto(js, js->this_val, proto); jsoff_t slen; vstr(js, sval, &slen); setprop(js, js->this_val, js_mkstr(js, "length", 6), tov((double)slen)); } return sval; } static jsval_t builtin_Number_isNaN(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkval(T_BOOL, 0); jsval_t arg = args[0]; if (vtype(arg) != T_NUM) return mkval(T_BOOL, 0); double val = tod(arg); return mkval(T_BOOL, isnan(val) ? 1 : 0); } static jsval_t builtin_Number_isFinite(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkval(T_BOOL, 0); jsval_t arg = args[0]; if (vtype(arg) != T_NUM) return mkval(T_BOOL, 0); double val = tod(arg); return mkval(T_BOOL, isfinite(val) ? 1 : 0); } static double js_to_number(struct js *js, jsval_t arg) { if (vtype(arg) == T_NUM) return tod(arg); if (vtype(arg) == T_BOOL) return vdata(arg) ? 1.0 : 0.0; if (vtype(arg) == T_NULL) return 0.0; if (vtype(arg) == T_UNDEF) return NAN; if (vtype(arg) == T_STR) { jsoff_t len; jsoff_t off = vstr(js, arg, &len); const char *str = (char *) &js->mem[off]; while (*str == ' ' || *str == '\t' || *str == '\n' || *str == '\r') str++; if (*str == '\0') return 0.0; char *end; double val = strtod(str, &end); while (*end == ' ' || *end == '\t' || *end == '\n' || *end == '\r') end++; if (end == str || *end != '\0') return NAN; return val; } return NAN; } static jsval_t builtin_global_isNaN(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkval(T_BOOL, 1); double val = js_to_number(js, args[0]); return mkval(T_BOOL, isnan(val) ? 1 : 0); } static jsval_t builtin_global_isFinite(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkval(T_BOOL, 0); double val = js_to_number(js, args[0]); return mkval(T_BOOL, isfinite(val) ? 1 : 0); } static jsval_t builtin_Number_isInteger(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkval(T_BOOL, 0); jsval_t arg = args[0]; if (vtype(arg) != T_NUM) return mkval(T_BOOL, 0); double val = tod(arg); if (!isfinite(val)) return mkval(T_BOOL, 0); return mkval(T_BOOL, (val == floor(val)) ? 1 : 0); } static jsval_t builtin_Number_isSafeInteger(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkval(T_BOOL, 0); jsval_t arg = args[0]; if (vtype(arg) != T_NUM) return mkval(T_BOOL, 0); double val = tod(arg); if (!isfinite(val)) return mkval(T_BOOL, 0); if (val != floor(val)) return mkval(T_BOOL, 0); return mkval(T_BOOL, (val >= -9007199254740991.0 && val <= 9007199254740991.0) ? 1 : 0); } static jsval_t builtin_Number(struct js *js, jsval_t *args, int nargs) { jsval_t nval; if (nargs == 0) { nval = tov(0.0); } else { jsval_t arg = args[0]; if (vtype(arg) == T_NUM) { nval = arg; } else if (vtype(arg) == T_BOOL) { nval = tov(vdata(arg) ? 1.0 : 0.0); } else if (vtype(arg) == T_STR) { jsoff_t len; jsoff_t off = vstr(js, arg, &len); const char *str = (char *) &js->mem[off]; while (*str == ' ' || *str == '\t' || *str == '\n' || *str == '\r') str++; if (*str == '\0') { nval = tov(0.0); } else { char *end; double val = strtod(str, &end); while (*end == ' ' || *end == '\t' || *end == '\n' || *end == '\r') end++; if (end == str || *end != '\0') { nval = tov(NAN); } else { nval = tov(val); } } } else if (vtype(arg) == T_NULL || vtype(arg) == T_UNDEF) { nval = tov(0.0); } else { nval = tov(0.0); } } if (vtype(js->this_val) == T_OBJ && lkp(js, js->this_val, "__primitive_value__", 19) == 0) { setprop(js, js->this_val, js_mkstr(js, "__primitive_value__", 19), nval); jsval_t proto = get_ctor_proto(js, "Number", 6); if (vtype(proto) == T_OBJ) set_proto(js, js->this_val, proto); } return nval; } static jsval_t builtin_Boolean(struct js *js, jsval_t *args, int nargs) { jsval_t bval = mkval(T_BOOL, nargs > 0 && js_truthy(js, args[0]) ? 1 : 0); if (vtype(js->this_val) == T_OBJ && lkp(js, js->this_val, "__primitive_value__", 19) == 0) { setprop(js, js->this_val, js_mkstr(js, "__primitive_value__", 19), bval); jsval_t proto = get_ctor_proto(js, "Boolean", 7); if (vtype(proto) == T_OBJ) set_proto(js, js->this_val, proto); } return bval; } static jsval_t builtin_Object(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) { if (vtype(js->this_val) == T_OBJ) return js->this_val; return js_mkobj(js); } jsval_t arg = args[0]; if (vtype(arg) == T_NULL || vtype(arg) == T_UNDEF) { if (vtype(js->this_val) == T_OBJ) return js->this_val; return js_mkobj(js); } uint8_t t = vtype(arg); if (t == T_OBJ || t == T_ARR || t == T_FUNC) { return arg; } if (t == T_STR || t == T_NUM || t == T_BOOL || t == T_BIGINT) { jsval_t wrapper = js_mkobj(js); if (is_err(wrapper)) return wrapper; setprop(js, wrapper, js_mkstr(js, "__primitive_value__", 19), arg); jsval_t proto = get_prototype_for_type(js, t); if (vtype(proto) == T_OBJ) set_proto(js, wrapper, proto); return wrapper; } return arg; } static jsval_t js_eval_inherit_strict(struct js *js, const char *buf, size_t len, bool inherit_strict); static jsval_t builtin_eval(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkundef(); jsval_t code_arg = args[0]; if (vtype(code_arg) != T_STR) return code_arg; jsoff_t code_len, code_off = vstr(js, code_arg, &code_len); const char *code_str = (const char *)&js->mem[code_off]; js_parse_state_t saved; JS_SAVE_STATE(js, saved); uint8_t saved_flags = js->flags; bool caller_strict = (js->flags & F_STRICT) != 0; jsval_t result = js_eval_inherit_strict(js, code_str, code_len, caller_strict); bool had_throw = (js->flags & F_THROW) != 0; JS_RESTORE_STATE(js, saved); js->flags = saved_flags; if (is_err(result) || had_throw) { js->flags |= F_THROW; } return result; } static jsval_t builtin_Function(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) { jsval_t code_str = js_mkstr(js, "(){}", 4); if (is_err(code_str)) return code_str; jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res = setprop(js, func_obj, code_key, code_str); if (is_err(res)) return res; jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; res = setprop(js, func_obj, scope_key, js_glob(js)); if (is_err(res)) return res; jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj)); jsval_t proto_setup = setup_func_prototype(js, func); if (is_err(proto_setup)) return proto_setup; return func; } size_t total_len = 1; for (int i = 0; i < nargs - 1; i++) { if (vtype(args[i]) != T_STR) { const char *str = js_str(js, args[i]); args[i] = js_mkstr(js, str, strlen(str)); if (is_err(args[i])) return args[i]; } total_len += vstrlen(js, args[i]); if (i < nargs - 2) total_len += 1; } total_len += 2; jsval_t body = args[nargs - 1]; if (vtype(body) != T_STR) { const char *str = js_str(js, body); body = js_mkstr(js, str, strlen(str)); if (is_err(body)) return body; } total_len += vstrlen(js, body); total_len += 1; jsval_t code_str = js_mkstr(js, NULL, total_len); if (is_err(code_str)) return code_str; jsoff_t code_len, code_off = vstr(js, code_str, &code_len); char *code_ptr = (char *)&js->mem[code_off]; size_t pos = 0; code_ptr[pos++] = '('; for (int i = 0; i < nargs - 1; i++) { jsoff_t param_len, param_off = vstr(js, args[i], ¶m_len); memcpy(code_ptr + pos, &js->mem[param_off], param_len); pos += param_len; if (i < nargs - 2) { code_ptr[pos++] = ','; } } code_ptr[pos++] = ')'; code_ptr[pos++] = '{'; jsoff_t body_len, body_off = vstr(js, body, &body_len); memcpy(code_ptr + pos, &js->mem[body_off], body_len); pos += body_len; code_ptr[pos++] = '}'; bool is_strict_body = is_strict_function_body((const char *)&js->mem[body_off], body_len); if (is_strict_body && nargs > 1) { int i = 0, j; jsoff_t param_len_i, param_off_i; const char *param_i; check_param: if (i >= nargs - 1) goto params_done; param_off_i = vstr(js, args[i], ¶m_len_i); param_i = (const char *)&js->mem[param_off_i]; if (is_strict_restricted(param_i, param_len_i)) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "cannot use '%.*s' as parameter name in strict mode", (int)param_len_i, param_i); } j = i + 1; check_dup: if (j >= nargs - 1) { i++; goto check_param; } jsoff_t param_len_j, param_off_j = vstr(js, args[j], ¶m_len_j); const char *param_j = (const char *)&js->mem[param_off_j]; if (param_len_i == param_len_j && memcmp(param_i, param_j, param_len_i) == 0) { return js_mkerr_typed(js, JS_ERR_SYNTAX, "duplicate parameter name '%.*s' in strict mode", (int)param_len_i, param_i); } j++; goto check_dup; params_done:; } jsval_t func_obj = mkobj(js, 0); if (is_err(func_obj)) return func_obj; jsval_t code_key = js_mkstr(js, "__code", 6); if (is_err(code_key)) return code_key; jsval_t res = setprop(js, func_obj, code_key, code_str); if (is_err(res)) return res; jsval_t scope_key = js_mkstr(js, "__scope", 7); if (is_err(scope_key)) return scope_key; res = setprop(js, func_obj, scope_key, js_glob(js)); if (is_err(res)) return res; jsval_t func = mkval(T_FUNC, (unsigned long) vdata(func_obj)); jsval_t proto_setup = setup_func_prototype(js, func); if (is_err(proto_setup)) return proto_setup; return func; } static jsval_t builtin_function_call(struct js *js, jsval_t *args, int nargs) { jsval_t func = js->this_val; if (vtype(func) != T_FUNC && vtype(func) != T_CFUNC) { return js_mkerr(js, "call requires a function"); } jsval_t this_arg = (nargs > 0) ? args[0] : js_mkundef(); jsval_t *call_args = NULL; int call_nargs = (nargs > 1) ? nargs - 1 : 0; if (call_nargs > 0) { call_args = &args[1]; } jsval_t saved_this = js->this_val; push_this(this_arg); js->this_val = this_arg; jsval_t result = call_js_with_args(js, func, call_args, call_nargs); pop_this(); js->this_val = saved_this; return result; } static int extract_array_args(struct js *js, jsval_t arr, jsval_t **out_args) { jsoff_t len_off = lkp_interned(js, arr, INTERN_LENGTH, 6); if (len_off == 0) return 0; jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) != T_NUM) return 0; int len = (int) tod(len_val); if (len <= 0) return 0; jsval_t *args_out = (jsval_t *)ANT_GC_MALLOC(sizeof(jsval_t) * len); if (!args_out) return 0; for (int i = 0; i < len; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); jsoff_t prop_off = lkp(js, arr, idx, strlen(idx)); args_out[i] = (prop_off != 0) ? resolveprop(js, mkval(T_PROP, prop_off)) : js_mkundef(); } *out_args = args_out; return len; } static jsval_t builtin_function_apply(struct js *js, jsval_t *args, int nargs) { jsval_t func = js->this_val; if (vtype(func) != T_FUNC && vtype(func) != T_CFUNC) { return js_mkerr(js, "apply requires a function"); } jsval_t this_arg = (nargs > 0) ? args[0] : js_mkundef(); jsval_t *call_args = NULL; int call_nargs = 0; if (nargs > 1) { jsval_t arg_array = args[1]; uint8_t t = vtype(arg_array); if (t == T_ARR || t == T_OBJ) { call_nargs = extract_array_args(js, arg_array, &call_args); } else if (t != T_UNDEF && t != T_NULL) {} } jsval_t saved_this = js->this_val; push_this(this_arg); js->this_val = this_arg; jsval_t result = call_js_with_args(js, func, call_args, call_nargs); pop_this(); js->this_val = saved_this; if (call_args) ANT_GC_FREE(call_args); return result; } static jsval_t builtin_function_bind(struct js *js, jsval_t *args, int nargs) { jsval_t func = js->this_val; if (vtype(func) != T_FUNC && vtype(func) != T_CFUNC) { return js_mkerr_typed(js, JS_ERR_TYPE, "bind requires a function"); } jsval_t this_arg = (nargs > 0) ? args[0] : js_mkundef(); int bound_argc = (nargs > 1) ? nargs - 1 : 0; jsval_t *bound_args = (bound_argc > 0) ? &args[1] : NULL; int orig_length = 0; jsval_t target_func_obj; if (vtype(func) == T_CFUNC) { orig_length = 0; } else { target_func_obj = mkval(T_OBJ, vdata(func)); jsoff_t len_off = lkp_interned(js, target_func_obj, INTERN_LENGTH, 6); if (len_off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) == T_NUM) { orig_length = (int) tod(len_val); } } } int bound_length = orig_length - bound_argc; if (bound_length < 0) bound_length = 0; if (vtype(func) == T_CFUNC) { jsval_t bound_func = mkobj(js, 0); if (is_err(bound_func)) return bound_func; setprop(js, bound_func, js_mkstr(js, "__native_func", 13), func); setprop(js, bound_func, js_mkstr(js, "__bound_this", 12), this_arg); if (bound_argc > 0) { jsval_t bound_arr = mkarr(js); for (int i = 0; i < bound_argc; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); setprop(js, bound_arr, js_mkstr(js, idx, strlen(idx)), bound_args[i]); } setprop(js, bound_arr, js_mkstr(js, "length", 6), tov((double) bound_argc)); setprop(js, bound_func, js_mkstr(js, "__bound_args", 12), bound_arr); } jsval_t bound = mkval(T_FUNC, (unsigned long) vdata(bound_func)); setprop(js, bound_func, js_mkstr(js, "length", 6), tov((double) bound_length)); jsval_t proto_setup = setup_func_prototype(js, bound); if (is_err(proto_setup)) return proto_setup; return bound; } jsval_t func_obj = mkval(T_OBJ, vdata(func)); jsval_t bound_func = mkobj(js, 0); if (is_err(bound_func)) return bound_func; jsoff_t code_off = lkp_interned(js, func_obj, INTERN_CODE, 6); if (code_off != 0) { jsval_t code_val = resolveprop(js, mkval(T_PROP, code_off)); setprop(js, bound_func, js_mkstr(js, "__code", 6), code_val); } jsoff_t scope_off = lkp_interned(js, func_obj, INTERN_SCOPE, 7); if (scope_off != 0) { jsval_t scope_val = resolveprop(js, mkval(T_PROP, scope_off)); setprop(js, bound_func, js_mkstr(js, "__scope", 7), scope_val); } jsoff_t async_off = lkp_interned(js, func_obj, INTERN_ASYNC, 7); if (async_off != 0) { jsval_t async_val = resolveprop(js, mkval(T_PROP, async_off)); setprop(js, bound_func, js_mkstr(js, "__async", 7), async_val); } setprop(js, bound_func, js_mkstr(js, "__target_func", 13), func); setprop(js, bound_func, js_mkstr(js, "__bound_this", 12), this_arg); if (bound_argc > 0) { jsval_t bound_arr = mkarr(js); for (int i = 0; i < bound_argc; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); setprop(js, bound_arr, js_mkstr(js, idx, strlen(idx)), bound_args[i]); } setprop(js, bound_arr, js_mkstr(js, "length", 6), tov((double) bound_argc)); setprop(js, bound_func, js_mkstr(js, "__bound_args", 12), bound_arr); } setprop(js, bound_func, js_mkstr(js, "length", 6), tov((double) bound_length)); jsval_t bound = mkval(T_FUNC, (unsigned long) vdata(bound_func)); jsval_t proto_setup = setup_func_prototype(js, bound); if (is_err(proto_setup)) return proto_setup; return bound; } static jsval_t builtin_Array(struct js *js, jsval_t *args, int nargs) { jsval_t arr = mkarr(js); if (nargs == 1 && vtype(args[0]) == T_NUM) { jsval_t err = validate_array_length(js, args[0]); if (is_err(err)) return err; jsoff_t len = (jsoff_t) tod(args[0]); jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) len); setprop(js, arr, len_key, len_val); } else { for (int i = 0; i < nargs; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, args[i]); } jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) nargs); setprop(js, arr, len_key, len_val); } return mkval(T_ARR, vdata(arr)); } static jsval_t builtin_Error(struct js *js, jsval_t *args, int nargs) { jsval_t err_obj = js->this_val; jsval_t error_proto = get_ctor_proto(js, "Error", 5); bool is_constructor_call = (vtype(err_obj) == T_OBJ); if (!is_constructor_call) { err_obj = mkobj(js, 0); set_proto(js, err_obj, error_proto); } jsval_t message = js_mkstr(js, "", 0); if (nargs > 0) { if (vtype(args[0]) == T_STR) { message = args[0]; } else { const char *str = js_str(js, args[0]); message = js_mkstr(js, str, strlen(str)); } } jsval_t message_key = js_mkstr(js, "message", 7); setprop(js, err_obj, message_key, message); jsval_t name_key = js_mkstr(js, "name", 4); jsval_t name_val = js_mkstr(js, "Error", 5); setprop(js, err_obj, name_key, name_val); return err_obj; } #define DEFINE_ERROR_BUILTIN(name, name_str, name_len) \ static jsval_t builtin_##name(struct js *js, jsval_t *args, int nargs) { \ jsval_t err_obj = js->this_val; \ jsval_t error_proto = get_ctor_proto(js, name_str, name_len); \ bool is_constructor_call = (vtype(err_obj) == T_OBJ); \ if (!is_constructor_call) { \ err_obj = mkobj(js, 0); \ set_proto(js, err_obj, error_proto); \ } \ jsval_t message = js_mkstr(js, "", 0); \ if (nargs > 0) { \ if (vtype(args[0]) == T_STR) { \ message = args[0]; \ } else { \ const char *str = js_str(js, args[0]); \ message = js_mkstr(js, str, strlen(str)); \ } \ } \ setprop(js, err_obj, js_mkstr(js, "message", 7), message); \ setprop(js, err_obj, js_mkstr(js, "name", 4), js_mkstr(js, name_str, name_len)); \ return err_obj; \ } DEFINE_ERROR_BUILTIN(EvalError, "EvalError", 9) DEFINE_ERROR_BUILTIN(RangeError, "RangeError", 10) DEFINE_ERROR_BUILTIN(ReferenceError, "ReferenceError", 14) DEFINE_ERROR_BUILTIN(SyntaxError, "SyntaxError", 11) DEFINE_ERROR_BUILTIN(TypeError, "TypeError", 9) DEFINE_ERROR_BUILTIN(URIError, "URIError", 8) DEFINE_ERROR_BUILTIN(InternalError, "InternalError", 13) #undef DEFINE_ERROR_BUILTIN static jsval_t builtin_RegExp(struct js *js, jsval_t *args, int nargs) { jsval_t regexp_obj = js->this_val; bool use_this = (vtype(regexp_obj) == T_OBJ); if (!use_this) { regexp_obj = mkobj(js, 0); } jsval_t regexp_proto = get_ctor_proto(js, "RegExp", 6); if (vtype(regexp_proto) == T_OBJ) set_proto(js, regexp_obj, regexp_proto); jsval_t pattern = js_mkstr(js, "", 0); if (nargs > 0) { if (vtype(args[0]) == T_STR) { pattern = args[0]; } else { const char *str = js_str(js, args[0]); pattern = js_mkstr(js, str, strlen(str)); } } jsval_t flags = js_mkstr(js, "", 0); if (nargs > 1 && vtype(args[1]) == T_STR) { flags = args[1]; } jsval_t source_key = js_mkstr(js, "source", 6); setprop(js, regexp_obj, source_key, pattern); jsval_t flags_key = js_mkstr(js, "flags", 5); setprop(js, regexp_obj, flags_key, flags); jsoff_t flags_len, flags_off = vstr(js, flags, &flags_len); const char *flags_str = (char *) &js->mem[flags_off]; bool global = false, ignoreCase = false, multiline = false, dotAll = false, sticky = false; for (jsoff_t i = 0; i < flags_len; i++) { if (flags_str[i] == 'g') global = true; if (flags_str[i] == 'i') ignoreCase = true; if (flags_str[i] == 'm') multiline = true; if (flags_str[i] == 's') dotAll = true; if (flags_str[i] == 'y') sticky = true; } setprop(js, regexp_obj, js_mkstr(js, "global", 6), mkval(T_BOOL, global ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "ignoreCase", 10), mkval(T_BOOL, ignoreCase ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "multiline", 9), mkval(T_BOOL, multiline ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "dotAll", 6), mkval(T_BOOL, dotAll ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "sticky", 6), mkval(T_BOOL, sticky ? 1 : 0)); setprop(js, regexp_obj, js_mkstr(js, "lastIndex", 9), tov(0)); return regexp_obj; } static jsval_t builtin_regexp_test(struct js *js, jsval_t *args, int nargs) { jsval_t regexp = js->this_val; if (vtype(regexp) != T_OBJ) return js_mkerr(js, "test called on non-regexp"); if (nargs < 1) return mkval(T_BOOL, 0); jsval_t str_arg = args[0]; if (vtype(str_arg) != T_STR) return mkval(T_BOOL, 0); jsoff_t source_off = lkp(js, regexp, "source", 6); if (source_off == 0) return mkval(T_BOOL, 0); jsval_t source_val = resolveprop(js, mkval(T_PROP, source_off)); if (vtype(source_val) != T_STR) return mkval(T_BOOL, 0); jsoff_t plen, poff = vstr(js, source_val, &plen); const char *pattern_ptr = (char *) &js->mem[poff]; bool ignore_case = false, multiline = false; jsoff_t flags_off = lkp(js, regexp, "flags", 5); if (flags_off != 0) { jsval_t flags_val = resolveprop(js, mkval(T_PROP, flags_off)); if (vtype(flags_val) == T_STR) { jsoff_t flen, foff = vstr(js, flags_val, &flen); const char *flags_str = (char *) &js->mem[foff]; for (jsoff_t i = 0; i < flen; i++) { if (flags_str[i] == 'i') ignore_case = true; if (flags_str[i] == 'm') multiline = true; } } } jsoff_t str_len, str_off = vstr(js, str_arg, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; char pcre2_pattern[512]; size_t pcre2_len = js_to_pcre2_pattern(pattern_ptr, plen, pcre2_pattern, sizeof(pcre2_pattern)); uint32_t options = PCRE2_UTF | PCRE2_UCP | PCRE2_MATCH_UNSET_BACKREF; if (ignore_case) options |= PCRE2_CASELESS; if (multiline) options |= PCRE2_MULTILINE; int errcode; PCRE2_SIZE erroffset; pcre2_code *re = pcre2_compile((PCRE2_SPTR)pcre2_pattern, pcre2_len, options, &errcode, &erroffset, NULL); if (re == NULL) return mkval(T_BOOL, 0); pcre2_match_data *match_data = pcre2_match_data_create_from_pattern(re, NULL); int rc = pcre2_match(re, (PCRE2_SPTR)str_ptr, str_len, 0, 0, match_data, NULL); pcre2_match_data_free(match_data); pcre2_code_free(re); return mkval(T_BOOL, rc >= 0 ? 1 : 0); } static jsval_t builtin_regexp_exec(struct js *js, jsval_t *args, int nargs) { jsval_t regexp = js->this_val; if (vtype(regexp) != T_OBJ) return js_mkerr(js, "exec called on non-regexp"); if (nargs < 1) return js_mknull(); jsval_t str_arg = args[0]; if (vtype(str_arg) != T_STR) return js_mknull(); jsoff_t source_off = lkp(js, regexp, "source", 6); if (source_off == 0) return js_mknull(); jsval_t source_val = resolveprop(js, mkval(T_PROP, source_off)); if (vtype(source_val) != T_STR) return js_mknull(); jsoff_t plen, poff = vstr(js, source_val, &plen); const char *pattern_ptr = (char *) &js->mem[poff]; bool ignore_case = false, multiline = false, global_flag = false; jsoff_t flags_off = lkp(js, regexp, "flags", 5); if (flags_off != 0) { jsval_t flags_val = resolveprop(js, mkval(T_PROP, flags_off)); if (vtype(flags_val) == T_STR) { jsoff_t flen, foff = vstr(js, flags_val, &flen); const char *flags_str = (char *) &js->mem[foff]; for (jsoff_t i = 0; i < flen; i++) { if (flags_str[i] == 'i') ignore_case = true; if (flags_str[i] == 'm') multiline = true; if (flags_str[i] == 'g') global_flag = true; } } } jsoff_t str_len, str_off = vstr(js, str_arg, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; PCRE2_SIZE start_offset = 0; if (global_flag) { jsoff_t lastindex_off = lkp(js, regexp, "lastIndex", 9); if (lastindex_off != 0) { jsval_t li_val = resolveprop(js, mkval(T_PROP, lastindex_off)); if (vtype(li_val) == T_NUM) { double li = tod(li_val); if (li >= 0 && li <= str_len) start_offset = (PCRE2_SIZE)li; } } } char pcre2_pattern[512]; size_t pcre2_len = js_to_pcre2_pattern(pattern_ptr, plen, pcre2_pattern, sizeof(pcre2_pattern)); uint32_t options = PCRE2_UTF | PCRE2_UCP | PCRE2_MATCH_UNSET_BACKREF; if (ignore_case) options |= PCRE2_CASELESS; if (multiline) options |= PCRE2_MULTILINE; int errcode; PCRE2_SIZE erroffset; pcre2_code *re = pcre2_compile((PCRE2_SPTR)pcre2_pattern, pcre2_len, options, &errcode, &erroffset, NULL); if (re == NULL) return js_mknull(); pcre2_match_data *match_data = pcre2_match_data_create_from_pattern(re, NULL); int rc = pcre2_match(re, (PCRE2_SPTR)str_ptr, str_len, start_offset, 0, match_data, NULL); if (rc < 0) { pcre2_match_data_free(match_data); pcre2_code_free(re); if (global_flag) { setprop(js, regexp, js_mkstr(js, "lastIndex", 9), tov(0)); } return js_mknull(); } PCRE2_SIZE *ovector = pcre2_get_ovector_pointer(match_data); uint32_t ovcount = pcre2_get_ovector_count(match_data); jsval_t result_arr = js_mkarr(js); for (uint32_t i = 0; i < ovcount && i < 32; i++) { PCRE2_SIZE start = ovector[2*i]; PCRE2_SIZE end = ovector[2*i+1]; if (start == PCRE2_UNSET) { js_arr_push(js, result_arr, js_mkundef()); } else { jsval_t match_str = js_mkstr(js, str_ptr + start, end - start); js_arr_push(js, result_arr, match_str); } } setprop(js, result_arr, js_mkstr(js, "index", 5), tov((double)ovector[0])); setprop(js, result_arr, js_mkstr(js, "input", 5), str_arg); if (global_flag) { PCRE2_SIZE new_lastindex = ovector[1]; if (ovector[0] == ovector[1]) new_lastindex++; setprop(js, regexp, js_mkstr(js, "lastIndex", 9), tov((double)new_lastindex)); } pcre2_match_data_free(match_data); pcre2_code_free(re); return result_arr; } static jsval_t builtin_regexp_toString(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t regexp = js->this_val; if (vtype(regexp) != T_OBJ) return js_mkerr(js, "toString called on non-regexp"); jsoff_t source_off = lkp(js, regexp, "source", 6); if (source_off == 0) return js_mkstr(js, "/undefined/", 11); jsval_t source_val = resolveprop(js, mkval(T_PROP, source_off)); if (vtype(source_val) != T_STR) return js_mkstr(js, "/undefined/", 11); jsoff_t src_len; jsoff_t src_off = vstr(js, source_val, &src_len); const char *src_ptr = (const char *)(js->mem + src_off); char flags[8] = {0}; int fi = 0; jsoff_t prop_off; prop_off = lkp(js, regexp, "global", 6); if (prop_off && vdata(resolveprop(js, mkval(T_PROP, prop_off)))) flags[fi++] = 'g'; prop_off = lkp(js, regexp, "ignoreCase", 10); if (prop_off && vdata(resolveprop(js, mkval(T_PROP, prop_off)))) flags[fi++] = 'i'; prop_off = lkp(js, regexp, "multiline", 9); if (prop_off && vdata(resolveprop(js, mkval(T_PROP, prop_off)))) flags[fi++] = 'm'; prop_off = lkp(js, regexp, "dotAll", 6); if (prop_off && vdata(resolveprop(js, mkval(T_PROP, prop_off)))) flags[fi++] = 's'; prop_off = lkp(js, regexp, "sticky", 6); if (prop_off && vdata(resolveprop(js, mkval(T_PROP, prop_off)))) flags[fi++] = 'y'; size_t result_len = 1 + src_len + 1 + fi; char *result = (char *)malloc(result_len + 1); if (!result) return js_mkerr(js, "out of memory"); result[0] = '/'; memcpy(result + 1, src_ptr, src_len); result[1 + src_len] = '/'; memcpy(result + 2 + src_len, flags, fi); result[result_len] = '\0'; jsval_t ret = js_mkstr(js, result, result_len); free(result); return ret; } static jsval_t builtin_string_search(struct js *js, jsval_t *args, int nargs) { jsval_t this_unwrapped = unwrap_primitive(js, js->this_val); jsval_t str = js_tostring_val(js, this_unwrapped); if (is_err(str)) return str; if (nargs < 1) return tov(-1); jsval_t pattern = args[0]; const char *pattern_ptr = NULL; jsoff_t pattern_len = 0; bool ignore_case = false, multiline = false; if (vtype(pattern) == T_OBJ) { jsoff_t source_off = lkp(js, pattern, "source", 6); if (source_off == 0) return tov(-1); jsval_t source_val = resolveprop(js, mkval(T_PROP, source_off)); if (vtype(source_val) != T_STR) return tov(-1); jsoff_t poff; poff = vstr(js, source_val, &pattern_len); pattern_ptr = (char *) &js->mem[poff]; jsoff_t flags_off = lkp(js, pattern, "flags", 5); if (flags_off != 0) { jsval_t flags_val = resolveprop(js, mkval(T_PROP, flags_off)); if (vtype(flags_val) == T_STR) { jsoff_t flen, foff = vstr(js, flags_val, &flen); const char *flags_str = (char *) &js->mem[foff]; for (jsoff_t i = 0; i < flen; i++) { if (flags_str[i] == 'i') ignore_case = true; if (flags_str[i] == 'm') multiline = true; } } } } else if (vtype(pattern) == T_STR) { jsoff_t poff; poff = vstr(js, pattern, &pattern_len); pattern_ptr = (char *) &js->mem[poff]; } else { return tov(-1); } jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; char pcre2_pattern[512]; size_t pcre2_len = js_to_pcre2_pattern(pattern_ptr, pattern_len, pcre2_pattern, sizeof(pcre2_pattern)); uint32_t options = PCRE2_UTF | PCRE2_UCP | PCRE2_MATCH_UNSET_BACKREF; if (ignore_case) options |= PCRE2_CASELESS; if (multiline) options |= PCRE2_MULTILINE; int errcode; PCRE2_SIZE erroffset; pcre2_code *re = pcre2_compile((PCRE2_SPTR)pcre2_pattern, pcre2_len, options, &errcode, &erroffset, NULL); if (re == NULL) return tov(-1); pcre2_match_data *match_data = pcre2_match_data_create_from_pattern(re, NULL); int rc = pcre2_match(re, (PCRE2_SPTR)str_ptr, str_len, 0, 0, match_data, NULL); if (rc < 0) { pcre2_match_data_free(match_data); pcre2_code_free(re); return tov(-1); } PCRE2_SIZE *ovector = pcre2_get_ovector_pointer(match_data); double result = (double)ovector[0]; pcre2_match_data_free(match_data); pcre2_code_free(re); return tov(result); } static jsval_t builtin_Date(struct js *js, jsval_t *args, int nargs) { jsval_t date_obj = js->this_val; jsval_t date_proto = get_ctor_proto(js, "Date", 4); jsval_t this_proto = get_proto(js, date_obj); bool is_constructor_call = ( vtype(date_obj) == T_OBJ && vtype(this_proto) == T_OBJ && vdata(this_proto) == vdata(date_proto) ); if (!is_constructor_call) { struct timeval tv; gettimeofday(&tv, NULL); time_t t = tv.tv_sec; struct tm *tm = localtime(&t); static const char *days[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; static const char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; char buf[64]; snprintf( buf, sizeof(buf), "%s %s %02d %04d %02d:%02d:%02d GMT%+03ld%02ld", days[tm->tm_wday], months[tm->tm_mon], tm->tm_mday, tm->tm_year + 1900, tm->tm_hour, tm->tm_min, tm->tm_sec, -timezone/3600, (labs(timezone)/60)%60 ); return js_mkstr(js, buf, strlen(buf)); } double timestamp_ms; if (nargs == 0) { struct timeval tv; gettimeofday(&tv, NULL); // NOLINTNEXTLINE(bugprone-integer-division) timestamp_ms = (double)tv.tv_sec * 1000.0 + (double)(tv.tv_usec / 1000); } else if (nargs == 1) { if (vtype(args[0]) == T_NUM) { timestamp_ms = tod(args[0]); } else if (vtype(args[0]) == T_STR) { timestamp_ms = 0; } else timestamp_ms = 0; } else { int year = (int)tod(args[0]); int month = nargs >= 2 ? (int)tod(args[1]) : 0; int day = nargs >= 3 ? (int)tod(args[2]) : 1; int hour = nargs >= 4 ? (int)tod(args[3]) : 0; int minute = nargs >= 5 ? (int)tod(args[4]) : 0; int sec = nargs >= 6 ? (int)tod(args[5]) : 0; int ms = nargs >= 7 ? (int)tod(args[6]) : 0; if (year >= 0 && year <= 99) year += 1900; struct tm tm_val = {0}; tm_val.tm_year = year - 1900; tm_val.tm_mon = month; tm_val.tm_mday = day; tm_val.tm_hour = hour; tm_val.tm_min = minute; tm_val.tm_sec = sec; tm_val.tm_isdst = -1; time_t t = mktime(&tm_val); timestamp_ms = (double)t * 1000.0 + ms; } jsval_t time_key = js_mkstr(js, "__time", 6); jsval_t time_val = tov(timestamp_ms); setprop(js, date_obj, time_key, time_val); return date_obj; } static jsval_t builtin_Date_now(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; struct timeval tv; gettimeofday(&tv, NULL); // NOLINTNEXTLINE(bugprone-integer-division) double timestamp_ms = (double)tv.tv_sec * 1000.0 + (double)(tv.tv_usec / 1000); return tov(timestamp_ms); } static jsval_t builtin_Date_UTC(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1) return tov(NAN); int year = (int)tod(args[0]); int month = nargs >= 2 ? (int)tod(args[1]) : 0; int day = nargs >= 3 ? (int)tod(args[2]) : 1; int hour = nargs >= 4 ? (int)tod(args[3]) : 0; int min = nargs >= 5 ? (int)tod(args[4]) : 0; int sec = nargs >= 6 ? (int)tod(args[5]) : 0; int ms = nargs >= 7 ? (int)tod(args[6]) : 0; if (year >= 0 && year <= 99) year += 1900; struct tm tm = {0}; tm.tm_year = year - 1900; tm.tm_mon = month; tm.tm_mday = day; tm.tm_hour = hour; tm.tm_min = min; tm.tm_sec = sec; time_t t = timegm(&tm); return tov((double)t * 1000.0 + ms); } static double date_get_time(struct js *js, jsval_t this_val) { jsoff_t time_off = lkp(js, this_val, "__time", 6); if (time_off == 0) return NAN; jsval_t time_val = resolveprop(js, mkval(T_PROP, time_off)); if (vtype(time_val) != T_NUM) return NAN; return tod(time_val); } static jsval_t builtin_Date_getTime(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; return tov(date_get_time(js, js->this_val)); } static jsval_t builtin_Date_getFullYear(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)(tm->tm_year + 1900)); } static jsval_t builtin_Date_getMonth(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)tm->tm_mon); } static jsval_t builtin_Date_getDate(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)tm->tm_mday); } static jsval_t builtin_Date_getHours(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)tm->tm_hour); } static jsval_t builtin_Date_getMinutes(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)tm->tm_min); } static jsval_t builtin_Date_getSeconds(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)tm->tm_sec); } static jsval_t builtin_Date_getMilliseconds(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); return tov(fmod(ms, 1000.0)); } static jsval_t builtin_Date_getDay(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)tm->tm_wday); } static jsval_t builtin_Date_toISOString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mkerr_typed(js, JS_ERR_RANGE, "Invalid time value"); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); int millis = (int)fmod(ms, 1000.0); if (millis < 0) millis += 1000; char buf[32]; snprintf(buf, sizeof(buf), "%04d-%02d-%02dT%02d:%02d:%02d.%03dZ", tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec, millis); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_Date_toString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mkstr(js, "Invalid Date", 12); time_t t = (time_t)(ms / 1000.0); char *s = ctime(&t); size_t len = strlen(s); if (len > 0 && s[len - 1] == '\n') len--; return js_mkstr(js, s, len); } static jsval_t builtin_Date_valueOf(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; return tov(date_get_time(js, js->this_val)); } static jsval_t builtin_Date_getTimezoneOffset(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *local = localtime(&t); struct tm *utc = gmtime(&t); int diff = (local->tm_hour - utc->tm_hour) * 60 + (local->tm_min - utc->tm_min); if (local->tm_mday != utc->tm_mday) { diff += (local->tm_mday > utc->tm_mday || (local->tm_mday == 1 && utc->tm_mday > 1)) ? 1440 : -1440; } return tov((double)(-diff)); } static jsval_t builtin_Date_getUTCFullYear(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); return tov((double)(tm->tm_year + 1900)); } static jsval_t builtin_Date_getUTCMonth(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); return tov((double)tm->tm_mon); } static jsval_t builtin_Date_getUTCDate(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); return tov((double)tm->tm_mday); } static jsval_t builtin_Date_getUTCHours(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); return tov((double)tm->tm_hour); } static jsval_t builtin_Date_getUTCMinutes(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); return tov((double)tm->tm_min); } static jsval_t builtin_Date_getUTCSeconds(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); return tov((double)tm->tm_sec); } static jsval_t builtin_Date_getUTCMilliseconds(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); return tov(fmod(ms, 1000.0)); } static jsval_t builtin_Date_getUTCDay(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); return tov((double)tm->tm_wday); } static void date_set_time(struct js *js, jsval_t date, double ms) { if (vtype(date) != T_OBJ) return; jsval_t time_key = js_mkstr(js, "__time", 6); setprop(js, date, time_key, tov(ms)); } static jsval_t builtin_Date_setTime(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = tod(args[0]); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setMilliseconds(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); double newMs = tod(args[0]); ms = floor(ms / 1000.0) * 1000.0 + newMs; date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setSeconds(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); tm->tm_sec = (int)tod(args[0]); if (nargs >= 2) ms = floor(ms / 1000.0) * 1000.0 + tod(args[1]); else ms = floor(ms / 1000.0) * 1000.0 + fmod(ms, 1000.0); time_t newt = mktime(tm); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setMinutes(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); tm->tm_min = (int)tod(args[0]); if (nargs >= 2) tm->tm_sec = (int)tod(args[1]); time_t newt = mktime(tm); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setHours(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); tm->tm_hour = (int)tod(args[0]); if (nargs >= 2) tm->tm_min = (int)tod(args[1]); if (nargs >= 3) tm->tm_sec = (int)tod(args[2]); time_t newt = mktime(tm); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setDate(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); tm->tm_mday = (int)tod(args[0]); time_t newt = mktime(tm); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setMonth(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); tm->tm_mon = (int)tod(args[0]); if (nargs >= 2) tm->tm_mday = (int)tod(args[1]); time_t newt = mktime(tm); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setFullYear(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) ms = 0; time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); tm->tm_year = (int)tod(args[0]) - 1900; if (nargs >= 2) tm->tm_mon = (int)tod(args[1]); if (nargs >= 3) tm->tm_mday = (int)tod(args[2]); time_t newt = mktime(tm); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setUTCMilliseconds(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); double newMs = tod(args[0]); ms = floor(ms / 1000.0) * 1000.0 + newMs; date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setUTCSeconds(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); struct tm copy = *tm; copy.tm_sec = (int)tod(args[0]); time_t newt = timegm(©); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setUTCMinutes(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); struct tm copy = *tm; copy.tm_min = (int)tod(args[0]); if (nargs >= 2) copy.tm_sec = (int)tod(args[1]); time_t newt = timegm(©); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setUTCHours(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); struct tm copy = *tm; copy.tm_hour = (int)tod(args[0]); if (nargs >= 2) copy.tm_min = (int)tod(args[1]); if (nargs >= 3) copy.tm_sec = (int)tod(args[2]); time_t newt = timegm(©); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setUTCDate(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); struct tm copy = *tm; copy.tm_mday = (int)tod(args[0]); time_t newt = timegm(©); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setUTCMonth(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); struct tm copy = *tm; copy.tm_mon = (int)tod(args[0]); if (nargs >= 2) copy.tm_mday = (int)tod(args[1]); time_t newt = timegm(©); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_setUTCFullYear(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double ms = date_get_time(js, js->this_val); if (isnan(ms)) ms = 0; time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); struct tm copy = *tm; copy.tm_year = (int)tod(args[0]) - 1900; if (nargs >= 2) copy.tm_mon = (int)tod(args[1]); if (nargs >= 3) copy.tm_mday = (int)tod(args[2]); time_t newt = timegm(©); ms = (double)newt * 1000.0 + fmod(ms, 1000.0); date_set_time(js, js->this_val, ms); return tov(ms); } static jsval_t builtin_Date_toUTCString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mkstr(js, "Invalid Date", 12); time_t t = (time_t)(ms / 1000.0); struct tm *tm = gmtime(&t); static const char *days[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; static const char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; char buf[64]; snprintf(buf, sizeof(buf), "%s, %02d %s %04d %02d:%02d:%02d GMT", days[tm->tm_wday], tm->tm_mday, months[tm->tm_mon], tm->tm_year + 1900, tm->tm_hour, tm->tm_min, tm->tm_sec); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_Date_toDateString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mkstr(js, "Invalid Date", 12); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); static const char *days[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; static const char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; char buf[32]; snprintf(buf, sizeof(buf), "%s %s %02d %04d", days[tm->tm_wday], months[tm->tm_mon], tm->tm_mday, tm->tm_year + 1900); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_Date_toTimeString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mkstr(js, "Invalid Date", 12); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); char buf[32]; int offset = (int)(-timezone / 60); int offset_hours = offset / 60; int offset_mins = abs(offset % 60); snprintf(buf, sizeof(buf), "%02d:%02d:%02d GMT%+03d%02d", tm->tm_hour, tm->tm_min, tm->tm_sec, offset_hours, offset_mins); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_Date_toLocaleDateString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mkstr(js, "Invalid Date", 12); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); char buf[32]; snprintf(buf, sizeof(buf), "%d/%d/%04d", tm->tm_mon + 1, tm->tm_mday, tm->tm_year + 1900); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_Date_toLocaleTimeString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mkstr(js, "Invalid Date", 12); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); char buf[16]; snprintf(buf, sizeof(buf), "%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_Date_getYear(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; double ms = date_get_time(js, js->this_val); if (isnan(ms)) return tov(NAN); time_t t = (time_t)(ms / 1000.0); struct tm *tm = localtime(&t); return tov((double)(tm->tm_year)); } static jsval_t builtin_Date_setYear(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(NAN); double year_arg = tod(args[0]); if (isnan(year_arg)) { date_set_time(js, js->this_val, NAN); return tov(NAN); } int year = (int)year_arg; if (year >= 0 && year <= 99) year += 1900; double ms = date_get_time(js, js->this_val); time_t t; struct tm tm_val; if (isnan(ms)) { t = 0; tm_val = *localtime(&t); tm_val.tm_mday = 1; tm_val.tm_mon = 0; tm_val.tm_hour = 0; tm_val.tm_min = 0; tm_val.tm_sec = 0; } else { t = (time_t)(ms / 1000.0); tm_val = *localtime(&t); } tm_val.tm_year = year - 1900; time_t new_t = mktime(&tm_val); double new_ms = (double)new_t * 1000.0; date_set_time(js, js->this_val, new_ms); return tov(new_ms); } static jsval_t builtin_Date_toJSON(struct js *js, jsval_t *args, int nargs) { double ms = date_get_time(js, js->this_val); if (isnan(ms)) return js_mknull(); return builtin_Date_toISOString(js, args, nargs); } static jsval_t builtin_Math_abs(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(fabs(tod(args[0]))); } static jsval_t builtin_Math_acos(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(acos(tod(args[0]))); } static jsval_t builtin_Math_acosh(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(acosh(tod(args[0]))); } static jsval_t builtin_Math_asin(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(asin(tod(args[0]))); } static jsval_t builtin_Math_asinh(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(asinh(tod(args[0]))); } static jsval_t builtin_Math_atan(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(atan(tod(args[0]))); } static jsval_t builtin_Math_atanh(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(atanh(tod(args[0]))); } static jsval_t builtin_Math_atan2(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 2 || vtype(args[0]) != T_NUM || vtype(args[1]) != T_NUM) return tov(NAN); return tov(atan2(tod(args[0]), tod(args[1]))); } static jsval_t builtin_Math_cbrt(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(cbrt(tod(args[0]))); } static jsval_t builtin_Math_ceil(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(ceil(tod(args[0]))); } static jsval_t builtin_Math_clz32(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(32); uint32_t n = (uint32_t) tod(args[0]); if (n == 0) return tov(32); int count = 0; while ((n & 0x80000000U) == 0) { count++; n <<= 1; } return tov((double) count); } static jsval_t builtin_Math_cos(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(cos(tod(args[0]))); } static jsval_t builtin_Math_cosh(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(cosh(tod(args[0]))); } static jsval_t builtin_Math_exp(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(exp(tod(args[0]))); } static jsval_t builtin_Math_expm1(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(expm1(tod(args[0]))); } static jsval_t builtin_Math_floor(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(floor(tod(args[0]))); } static jsval_t builtin_Math_fround(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov((double)(float)tod(args[0])); } static jsval_t builtin_Math_hypot(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs == 0) return tov(0.0); double sum = 0.0; for (int i = 0; i < nargs; i++) { if (vtype(args[i]) != T_NUM) return tov(NAN); double v = tod(args[i]); sum += v * v; } return tov(sqrt(sum)); } static int32_t toInt32(double d) { if (isnan(d) || isinf(d) || d == 0) return 0; double int_val = trunc(d); double two32 = (double)(1ULL << 32); double two31 = (double)(1ULL << 31); double mod_val = fmod(int_val, two32); if (mod_val < 0) mod_val += two32; if (mod_val >= two31) mod_val -= two32; return (int32_t)mod_val; } static jsval_t builtin_Math_imul(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 2) return tov(0); int32_t a = toInt32(tod(args[0])); int32_t b = toInt32(tod(args[1])); return tov((double)((int32_t)((uint32_t)a * (uint32_t)b))); } static jsval_t builtin_Math_log(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(log(tod(args[0]))); } static jsval_t builtin_Math_log1p(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(log1p(tod(args[0]))); } static jsval_t builtin_Math_log10(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(log10(tod(args[0]))); } static jsval_t builtin_Math_log2(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(log2(tod(args[0]))); } static jsval_t builtin_Math_max(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs == 0) return tov(-INFINITY); double max_val = -INFINITY; for (int i = 0; i < nargs; i++) { if (vtype(args[i]) != T_NUM) return tov(NAN); double v = tod(args[i]); if (isnan(v)) return tov(NAN); if (v > max_val) max_val = v; } return tov(max_val); } static jsval_t builtin_Math_min(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs == 0) return tov(INFINITY); double min_val = INFINITY; for (int i = 0; i < nargs; i++) { if (vtype(args[i]) != T_NUM) return tov(NAN); double v = tod(args[i]); if (isnan(v)) return tov(NAN); if (v < min_val) min_val = v; } return tov(min_val); } static jsval_t builtin_Math_pow(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 2 || vtype(args[0]) != T_NUM || vtype(args[1]) != T_NUM) return tov(NAN); return tov(pow(tod(args[0]), tod(args[1]))); } static bool random_seeded = false; static jsval_t builtin_Math_random(struct js *js, jsval_t *args, int nargs) { (void) js; (void) args; (void) nargs; if (!random_seeded) { srand((unsigned int) time(NULL)); random_seeded = true; } return tov((double) rand() / ((double) RAND_MAX + 1.0)); } static jsval_t builtin_Math_round(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); double x = tod(args[0]); if (isnan(x) || isinf(x)) return tov(x); return tov(floor(x + 0.5)); } static jsval_t builtin_Math_sign(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); double v = tod(args[0]); if (isnan(v)) return tov(NAN); if (v > 0) return tov(1.0); if (v < 0) return tov(-1.0); return tov(v); } static jsval_t builtin_Math_sin(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(sin(tod(args[0]))); } static jsval_t builtin_Math_sinh(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(sinh(tod(args[0]))); } static jsval_t builtin_Math_sqrt(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(sqrt(tod(args[0]))); } static jsval_t builtin_Math_tan(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(tan(tod(args[0]))); } static jsval_t builtin_Math_tanh(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(tanh(tod(args[0]))); } static jsval_t builtin_Math_trunc(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(NAN); return tov(trunc(tod(args[0]))); } static jsval_t builtin_object_keys(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkarr(js); jsval_t obj = args[0]; if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR && vtype(obj) != T_FUNC) return mkarr(js); if (vtype(obj) == T_FUNC) obj = mkval(T_OBJ, vdata(obj)); jsval_t arr = mkarr(js); jsoff_t idx = 0; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; bool should_include = true; jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, klen); if (desc) { if (desc->has_getter || desc->has_setter) { continue; } should_include = desc->enumerable; } if (should_include) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t idx_key = js_mkstr(js, idxstr, idxlen); jsval_t key_val = js_mkstr(js, key, klen); setprop(js, arr, idx_key, key_val); idx++; } } next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (klen > 7 && key[0] == '_' && key[1] == '_' && key[2] == 'd' && key[3] == 'e' && key[4] == 's' && key[5] == 'c' && key[6] == '_') { jsval_t desc_obj = resolveprop(js, mkval(T_PROP, lkp(js, obj, key, klen))); if (vtype(desc_obj) == T_OBJ) { jsoff_t get_off = lkp_interned(js, desc_obj, INTERN_GET, 3); jsoff_t set_off = lkp_interned(js, desc_obj, INTERN_SET, 3); bool has_accessor = false; if (get_off != 0) { jsval_t get_val = resolveprop(js, mkval(T_PROP, get_off)); if (vtype(get_val) == T_FUNC || vtype(get_val) == T_CFUNC) has_accessor = true; } if (set_off != 0) { jsval_t set_val = resolveprop(js, mkval(T_PROP, set_off)); if (vtype(set_val) == T_FUNC || vtype(set_val) == T_CFUNC) has_accessor = true; } if (has_accessor) { jsoff_t enum_off = lkp(js, desc_obj, "enumerable", 10); bool is_enumerable = true; if (enum_off != 0) { jsval_t enum_val = resolveprop(js, mkval(T_PROP, enum_off)); is_enumerable = js_truthy(js, enum_val); } if (is_enumerable) { const char *prop_name = key + 7; size_t prop_len = klen - 7; char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t idx_key = js_mkstr(js, idxstr, idxlen); jsval_t key_val = js_mkstr(js, prop_name, prop_len); setprop(js, arr, idx_key, key_val); idx++; } } } } } for (jsoff_t i = 0; i < idx / 2; i++) { jsoff_t j = idx - 1 - i; char istr[16], jstr[16]; snprintf(istr, sizeof(istr), "%u", (unsigned) i); snprintf(jstr, sizeof(jstr), "%u", (unsigned) j); jsoff_t ioff = lkp(js, arr, istr, strlen(istr)); jsoff_t joff = lkp(js, arr, jstr, strlen(jstr)); jsval_t iv = loadval(js, ioff + sizeof(jsoff_t) * 2); jsval_t jv = loadval(js, joff + sizeof(jsoff_t) * 2); saveval(js, ioff + sizeof(jsoff_t) * 2, jv); saveval(js, joff + sizeof(jsoff_t) * 2, iv); } jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) idx); setprop(js, arr, len_key, len_val); return mkval(T_ARR, vdata(arr)); } static jsval_t builtin_object_values(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkarr(js); jsval_t obj = args[0]; if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR && vtype(obj) != T_FUNC) return mkarr(js); if (vtype(obj) == T_FUNC) obj = mkval(T_OBJ, vdata(obj)); jsval_t arr = mkarr(js); jsoff_t idx = 0; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; bool should_include = true; jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, klen); if (desc) { should_include = desc->enumerable; } if (should_include) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t idx_key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, idx_key, val); idx++; } } for (jsoff_t i = 0; i < idx / 2; i++) { jsoff_t j = idx - 1 - i; char istr[16], jstr[16]; snprintf(istr, sizeof(istr), "%u", (unsigned) i); snprintf(jstr, sizeof(jstr), "%u", (unsigned) j); jsoff_t ioff = lkp(js, arr, istr, strlen(istr)); jsoff_t joff = lkp(js, arr, jstr, strlen(jstr)); jsval_t iv = loadval(js, ioff + sizeof(jsoff_t) * 2); jsval_t jv = loadval(js, joff + sizeof(jsoff_t) * 2); saveval(js, ioff + sizeof(jsoff_t) * 2, jv); saveval(js, joff + sizeof(jsoff_t) * 2, iv); } jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) idx); setprop(js, arr, len_key, len_val); return mkval(T_ARR, vdata(arr)); } static jsval_t builtin_object_entries(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkarr(js); jsval_t obj = args[0]; if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR && vtype(obj) != T_FUNC) return mkarr(js); if (vtype(obj) == T_FUNC) obj = mkval(T_OBJ, vdata(obj)); jsval_t arr = mkarr(js); jsoff_t idx = 0; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; bool should_include = true; jsoff_t obj_off = (jsoff_t)vdata(obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key, klen); if (desc) { should_include = desc->enumerable; } if (should_include) { jsval_t pair = mkarr(js); jsval_t key_val = js_mkstr(js, key, klen); setprop(js, pair, js_mkstr(js, "0", 1), key_val); setprop(js, pair, js_mkstr(js, "1", 1), val); setprop(js, pair, js_mkstr(js, "length", 6), tov(2.0)); char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t idx_key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, idx_key, mkval(T_ARR, vdata(pair))); idx++; } } for (jsoff_t i = 0; i < idx / 2; i++) { jsoff_t j = idx - 1 - i; char istr[16], jstr[16]; snprintf(istr, sizeof(istr), "%u", (unsigned) i); snprintf(jstr, sizeof(jstr), "%u", (unsigned) j); jsoff_t ioff = lkp(js, arr, istr, strlen(istr)); jsoff_t joff = lkp(js, arr, jstr, strlen(jstr)); jsval_t iv = loadval(js, ioff + sizeof(jsoff_t) * 2); jsval_t jv = loadval(js, joff + sizeof(jsoff_t) * 2); saveval(js, ioff + sizeof(jsoff_t) * 2, jv); saveval(js, joff + sizeof(jsoff_t) * 2, iv); } jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) idx); setprop(js, arr, len_key, len_val); return mkval(T_ARR, vdata(arr)); } static jsval_t builtin_object_getPrototypeOf(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkerr(js, "Object.getPrototypeOf requires an argument"); jsval_t obj = args[0]; uint8_t t = vtype(obj); if (t == T_STR || t == T_NUM || t == T_BOOL || t == T_BIGINT) return get_prototype_for_type(js, t); if (t == T_OBJ || t == T_ARR || t == T_FUNC) return get_proto(js, obj); return js_mknull(); } static jsval_t builtin_object_setPrototypeOf(struct js *js, jsval_t *args, int nargs) { if (nargs < 2) return js_mkerr(js, "Object.setPrototypeOf requires 2 arguments"); jsval_t obj = args[0]; jsval_t proto = args[1]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) { return js_mkerr(js, "Object.setPrototypeOf: first argument must be an object"); } uint8_t pt = vtype(proto); if (pt != T_OBJ && pt != T_ARR && pt != T_FUNC && pt != T_NULL) { return js_mkerr(js, "Object.setPrototypeOf: prototype must be an object or null"); } if (pt != T_NULL) { jsval_t cur = proto; int depth = 0; while (vtype(cur) != T_NULL && depth < 32) { if (vdata(cur) == vdata(obj)) return js_mkerr(js, "Cyclic __proto__ value"); cur = get_proto(js, cur); depth++; } } set_proto(js, obj, proto); return obj; } static jsval_t builtin_object_create(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkerr(js, "Object.create requires a prototype argument"); jsval_t proto = args[0]; uint8_t pt = vtype(proto); if (pt != T_OBJ && pt != T_ARR && pt != T_FUNC && pt != T_NULL) { return js_mkerr(js, "Object.create: prototype must be an object or null"); } jsval_t obj = js_mkobj(js); if (pt != T_NULL) { set_proto(js, obj, proto); } if (nargs >= 2 && vtype(args[1]) == T_OBJ) { jsval_t props = args[1]; jsoff_t next = loadoff(js, (jsoff_t) vdata(props)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; jsval_t descriptor = resolveprop(js, mkval(T_PROP, next)); if (vtype(descriptor) == T_OBJ) { jsoff_t val_off = lkp(js, descriptor, "value", 5); if (val_off != 0) { jsval_t val = resolveprop(js, mkval(T_PROP, val_off)); jsval_t key_str = js_mkstr(js, key, klen); setprop(js, obj, key_str, val); } } next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } } return obj; } static jsval_t builtin_object_hasOwn(struct js *js, jsval_t *args, int nargs) { if (nargs < 2) return mkval(T_BOOL, 0); jsval_t obj = args[0]; jsval_t key = args[1]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return mkval(T_BOOL, 0); if (vtype(key) != T_STR) return mkval(T_BOOL, 0); jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t key_len, key_off = vstr(js, key, &key_len); const char *key_str = (char *) &js->mem[key_off]; jsoff_t off = lkp(js, as_obj, key_str, key_len); return mkval(T_BOOL, off != 0 ? 1 : 0); } static jsval_t builtin_object_defineProperty(struct js *js, jsval_t *args, int nargs) { if (nargs < 3) return js_mkerr(js, "Object.defineProperty requires 3 arguments"); jsval_t obj = args[0]; jsval_t prop = args[1]; jsval_t descriptor = args[2]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) { return js_mkerr(js, "Object.defineProperty called on non-object"); } if (vtype(prop) == T_SYMBOL) { char keybuf[64]; snprintf(keybuf, sizeof(keybuf), "__sym_%llu__", (unsigned long long)sym_get_id(prop)); prop = js_mkstr(js, keybuf, strlen(keybuf)); } else if (vtype(prop) != T_STR) { char buf[64]; size_t len = tostr(js, prop, buf, sizeof(buf)); prop = js_mkstr(js, buf, len); } if (vtype(descriptor) != T_OBJ) { return js_mkerr(js, "Property descriptor must be an object"); } jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t prop_len, prop_off = vstr(js, prop, &prop_len); const char *prop_str = (char *) &js->mem[prop_off]; if (streq(prop_str, prop_len, "__proto__", 9)) { return js_mkerr(js, "Cannot define __proto__ property"); } bool has_value = false, has_get = false, has_set = false, has_writable = false; jsval_t value = js_mkundef(); bool writable = true, enumerable = false, configurable = false; jsoff_t value_off = lkp(js, descriptor, "value", 5); if (value_off != 0) { has_value = true; value = resolveprop(js, mkval(T_PROP, value_off)); } jsoff_t get_off = lkp_interned(js, descriptor, INTERN_GET, 3); if (get_off != 0) { has_get = true; jsval_t getter = resolveprop(js, mkval(T_PROP, get_off)); if (vtype(getter) != T_FUNC && vtype(getter) != T_UNDEF) { return js_mkerr(js, "Getter must be a function"); } } jsoff_t set_off = lkp_interned(js, descriptor, INTERN_SET, 3); if (set_off != 0) { has_set = true; jsval_t setter = resolveprop(js, mkval(T_PROP, set_off)); if (vtype(setter) != T_FUNC && vtype(setter) != T_UNDEF) { return js_mkerr(js, "Setter must be a function"); } } if ((has_value || has_writable) && (has_get || has_set)) { return js_mkerr(js, "Invalid property descriptor. Cannot both specify accessors and a value or writable attribute"); } jsoff_t writable_off = lkp(js, descriptor, "writable", 8); if (writable_off != 0) { has_writable = true; jsval_t w_val = resolveprop(js, mkval(T_PROP, writable_off)); writable = js_truthy(js, w_val); } jsoff_t enumerable_off = lkp(js, descriptor, "enumerable", 10); if (enumerable_off != 0) { jsval_t e_val = resolveprop(js, mkval(T_PROP, enumerable_off)); enumerable = js_truthy(js, e_val); } jsoff_t configurable_off = lkp(js, descriptor, "configurable", 12); if (configurable_off != 0) { jsval_t c_val = resolveprop(js, mkval(T_PROP, configurable_off)); configurable = js_truthy(js, c_val); } jsoff_t existing_off = lkp(js, as_obj, prop_str, prop_len); if (has_get || has_set) { int desc_flags = (enumerable ? JS_DESC_E : 0) | (configurable ? JS_DESC_C : 0); if (has_get && has_set) { jsval_t getter = resolveprop(js, mkval(T_PROP, get_off)); jsval_t setter = resolveprop(js, mkval(T_PROP, set_off)); js_set_accessor_desc(js, as_obj, prop_str, prop_len, getter, setter, desc_flags); } else if (has_get) { jsval_t getter = resolveprop(js, mkval(T_PROP, get_off)); js_set_getter_desc(js, as_obj, prop_str, prop_len, getter, desc_flags); } else { jsval_t setter = resolveprop(js, mkval(T_PROP, set_off)); js_set_setter_desc(js, as_obj, prop_str, prop_len, setter, desc_flags); } if (existing_off == 0) { jsval_t prop_key = js_mkstr(js, prop_str, prop_len); mkprop(js, as_obj, prop_key, js_mkundef(), !configurable); } } else { int desc_flags = (writable ? JS_DESC_W : 0) | (enumerable ? JS_DESC_E : 0) | (configurable ? JS_DESC_C : 0); js_set_descriptor(js, as_obj, prop_str, prop_len, desc_flags); if (existing_off > 0) { if (is_const_prop(js, existing_off)) { return js_mkerr(js, "Cannot redefine non-configurable property"); } if (has_value) { saveval(js, existing_off + sizeof(jsoff_t) * 2, value); } if (!configurable) { jsoff_t head = (jsoff_t) vdata(as_obj); jsoff_t firstprop = loadoff(js, head); if ((firstprop & ~(3U | CONSTMASK | ARRMASK)) == existing_off) { saveoff(js, head, firstprop | CONSTMASK); } } } else { if (!has_value) { value = js_mkundef(); } jsval_t prop_key = js_mkstr(js, prop_str, prop_len); bool mark_const = !writable; mkprop(js, as_obj, prop_key, value, mark_const); } } return obj; } static jsval_t builtin_object_defineProperties(struct js *js, jsval_t *args, int nargs) { if (nargs < 2) return js_mkerr(js, "Object.defineProperties requires 2 arguments"); jsval_t obj = args[0]; jsval_t props = args[1]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) { return js_mkerr(js, "Object.defineProperties called on non-object"); } if (vtype(props) != T_OBJ) { return js_mkerr(js, "Property descriptors must be an object"); } jsval_t props_obj = props; jsoff_t next = loadoff(js, (jsoff_t) vdata(props_obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; jsval_t descriptor = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; jsval_t prop_key = js_mkstr(js, key, klen); jsval_t define_args[3] = { obj, prop_key, descriptor }; jsval_t result = builtin_object_defineProperty(js, define_args, 3); if (is_err(result)) return result; } return obj; } static jsval_t builtin_object_assign(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkerr(js, "Object.assign requires at least 1 argument"); jsval_t target = args[0]; uint8_t t = vtype(target); if (t == T_NULL || t == T_UNDEF) { return js_mkerr(js, "Cannot convert undefined or null to object"); } if (t != T_OBJ && t != T_ARR && t != T_FUNC) { target = js_mkobj(js); } jsval_t as_obj = (vtype(target) == T_OBJ) ? target : mkval(T_OBJ, vdata(target)); for (int i = 1; i < nargs; i++) { jsval_t source = args[i]; uint8_t st = vtype(source); if (st == T_NULL || st == T_UNDEF) continue; if (st != T_OBJ && st != T_ARR && st != T_FUNC) continue; jsval_t src_obj = (st == T_OBJ) ? source : mkval(T_OBJ, vdata(source)); jsoff_t next = loadoff(js, (jsoff_t) vdata(src_obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; bool should_copy = true; jsoff_t src_obj_off = (jsoff_t)vdata(src_obj); descriptor_entry_t *desc = lookup_descriptor(src_obj_off, key, klen); if (desc) { should_copy = desc->enumerable; } if (should_copy) { jsval_t key_str = js_mkstr(js, key, klen); setprop(js, as_obj, key_str, val); } } } return target; } static jsval_t builtin_object_freeze(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkundef(); jsval_t obj = args[0]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return obj; jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t next = loadoff(js, (jsoff_t) vdata(as_obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; jsoff_t cur_prop = next; next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; jsoff_t head = (jsoff_t) vdata(as_obj); jsoff_t firstprop = loadoff(js, head); if ((firstprop & ~(3U | CONSTMASK | ARRMASK)) == cur_prop) { saveoff(js, head, firstprop | CONSTMASK); } else { jsoff_t prev = head; jsoff_t scan = firstprop & ~(3U | CONSTMASK | ARRMASK); while (scan < js->brk && scan != 0) { if (scan == cur_prop) { jsoff_t prev_val = loadoff(js, prev); saveoff(js, prev, prev_val | CONSTMASK); break; } prev = scan; scan = loadoff(js, scan) & ~(3U | CONSTMASK | ARRMASK); } } js_set_descriptor(js, as_obj, key, klen, JS_DESC_E); } setprop(js, as_obj, js_mkstr(js, "__frozen__", 10), js_mktrue()); return obj; } static jsval_t builtin_object_isFrozen(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mktrue(); jsval_t obj = args[0]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return js_mktrue(); jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t frozen_off = lkp(js, as_obj, "__frozen__", 10); if (frozen_off != 0) { jsval_t frozen_val = resolveprop(js, mkval(T_PROP, frozen_off)); if (js_truthy(js, frozen_val)) return js_mktrue(); } return js_mkfalse(); } static jsval_t builtin_object_seal(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkundef(); jsval_t obj = args[0]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return obj; jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); setprop(js, as_obj, js_mkstr(js, "__sealed__", 10), js_mktrue()); jsoff_t next = loadoff(js, (jsoff_t) vdata(as_obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; js_set_descriptor(js, as_obj, key, klen, JS_DESC_W | JS_DESC_E); } return obj; } static jsval_t builtin_object_isSealed(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mktrue(); jsval_t obj = args[0]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return js_mktrue(); jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t sealed_off = lkp(js, as_obj, "__sealed__", 10); if (sealed_off != 0) { jsval_t sealed_val = resolveprop(js, mkval(T_PROP, sealed_off)); if (js_truthy(js, sealed_val)) return js_mktrue(); } jsoff_t frozen_off = lkp(js, as_obj, "__frozen__", 10); if (frozen_off != 0) { jsval_t frozen_val = resolveprop(js, mkval(T_PROP, frozen_off)); if (js_truthy(js, frozen_val)) return js_mktrue(); } return js_mkfalse(); } static jsval_t builtin_object_fromEntries(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkerr(js, "Object.fromEntries requires an iterable argument"); jsval_t iterable = args[0]; uint8_t t = vtype(iterable); if (t != T_ARR && t != T_OBJ) { return js_mkerr(js, "Object.fromEntries requires an iterable"); } jsval_t result = js_mkobj(js); jsoff_t len_off = lkp_interned(js, iterable, INTERN_LENGTH, 6); if (len_off == 0) return result; jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) != T_NUM) return result; jsoff_t len = (jsoff_t) tod(len_val); for (jsoff_t i = 0; i < len; i++) { char idx_str[16]; snprintf(idx_str, sizeof(idx_str), "%u", (unsigned) i); jsoff_t entry_off = lkp(js, iterable, idx_str, strlen(idx_str)); if (entry_off == 0) continue; jsval_t entry = resolveprop(js, mkval(T_PROP, entry_off)); if (vtype(entry) != T_ARR && vtype(entry) != T_OBJ) continue; jsoff_t key_off = lkp(js, entry, "0", 1); if (key_off == 0) continue; jsval_t key = resolveprop(js, mkval(T_PROP, key_off)); jsoff_t val_off = lkp(js, entry, "1", 1); jsval_t val = (val_off != 0) ? resolveprop(js, mkval(T_PROP, val_off)) : js_mkundef(); if (vtype(key) != T_STR) { char buf[64]; size_t n = tostr(js, key, buf, sizeof(buf)); key = js_mkstr(js, buf, n); } setprop(js, result, key, val); } return result; } static jsval_t builtin_object_getOwnPropertyDescriptor(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkundef(); jsval_t obj = args[0]; jsval_t key = args[1]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return js_mkundef(); if (vtype(key) != T_STR) { char buf[64]; size_t n = tostr(js, key, buf, sizeof(buf)); key = js_mkstr(js, buf, n); } jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t key_len, key_off = vstr(js, key, &key_len); const char *key_str = (char *) &js->mem[key_off]; jsoff_t obj_off = (jsoff_t)vdata(as_obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key_str, key_len); jsoff_t prop_off = lkp(js, as_obj, key_str, key_len); if (prop_off == 0 && !desc) { return js_mkundef(); } jsval_t result = js_mkobj(js); if (desc && (desc->has_getter || desc->has_setter)) { if (desc->has_getter) { setprop(js, result, js_mkstr(js, "get", 3), desc->getter); } if (desc->has_setter) { setprop(js, result, js_mkstr(js, "set", 3), desc->setter); } setprop(js, result, js_mkstr(js, "enumerable", 10), desc->enumerable ? js_mktrue() : js_mkfalse()); setprop(js, result, js_mkstr(js, "configurable", 12), desc->configurable ? js_mktrue() : js_mkfalse()); } else { if (prop_off != 0) { jsval_t prop_val = resolveprop(js, mkval(T_PROP, prop_off)); setprop(js, result, js_mkstr(js, "value", 5), prop_val); } setprop(js, result, js_mkstr(js, "writable", 8), desc ? (desc->writable ? js_mktrue() : js_mkfalse()) : js_mktrue()); setprop(js, result, js_mkstr(js, "enumerable", 10), desc ? (desc->enumerable ? js_mktrue() : js_mkfalse()) : js_mktrue()); setprop(js, result, js_mkstr(js, "configurable", 12), desc ? (desc->configurable ? js_mktrue() : js_mkfalse()) : js_mktrue()); } return result; return js_mkundef(); } static jsval_t builtin_object_getOwnPropertyNames(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkarr(js); jsval_t obj = args[0]; if (vtype(obj) != T_OBJ && vtype(obj) != T_ARR && vtype(obj) != T_FUNC) return mkarr(js); if (vtype(obj) == T_FUNC) obj = mkval(T_OBJ, vdata(obj)); jsval_t arr = mkarr(js); jsoff_t idx = 0; jsoff_t next = loadoff(js, (jsoff_t) vdata(obj)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsoff_t klen = offtolen(loadoff(js, koff)); const char *key = (char *) &js->mem[koff + sizeof(koff)]; next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); if (is_internal_prop(key, klen)) continue; char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t idx_key = js_mkstr(js, idxstr, idxlen); jsval_t key_val = js_mkstr(js, key, klen); setprop(js, arr, idx_key, key_val); idx++; } for (jsoff_t i = 0; i < idx / 2; i++) { jsoff_t j = idx - 1 - i; char istr[16], jstr[16]; snprintf(istr, sizeof(istr), "%u", (unsigned) i); snprintf(jstr, sizeof(jstr), "%u", (unsigned) j); jsoff_t ioff = lkp(js, arr, istr, strlen(istr)); jsoff_t joff = lkp(js, arr, jstr, strlen(jstr)); jsval_t iv = loadval(js, ioff + sizeof(jsoff_t) * 2); jsval_t jv = loadval(js, joff + sizeof(jsoff_t) * 2); saveval(js, ioff + sizeof(jsoff_t) * 2, jv); saveval(js, joff + sizeof(jsoff_t) * 2, iv); } jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) idx); setprop(js, arr, len_key, len_val); return mkval(T_ARR, vdata(arr)); } static jsval_t builtin_object_isExtensible(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mktrue(); jsval_t obj = args[0]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return js_mktrue(); jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t frozen_off = lkp(js, as_obj, "__frozen__", 10); if (frozen_off != 0) { jsval_t frozen_val = resolveprop(js, mkval(T_PROP, frozen_off)); if (js_truthy(js, frozen_val)) return js_mkfalse(); } jsoff_t sealed_off = lkp(js, as_obj, "__sealed__", 10); if (sealed_off != 0) { jsval_t sealed_val = resolveprop(js, mkval(T_PROP, sealed_off)); if (js_truthy(js, sealed_val)) return js_mkfalse(); } jsoff_t ext_off = lkp(js, as_obj, "__extensible__", 14); if (ext_off != 0) { jsval_t ext_val = resolveprop(js, mkval(T_PROP, ext_off)); return mkval(T_BOOL, js_truthy(js, ext_val) ? 1 : 0); } return js_mktrue(); } static jsval_t builtin_object_preventExtensions(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkundef(); jsval_t obj = args[0]; uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return obj; jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); setprop(js, as_obj, js_mkstr(js, "__extensible__", 14), js_mkfalse()); return obj; } static jsval_t builtin_object_hasOwnProperty(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return mkval(T_BOOL, 0); jsval_t obj = js->this_val; jsval_t key = args[0]; obj = resolveprop(js, obj); uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return mkval(T_BOOL, 0); if (vtype(key) != T_STR) { char buf[64]; size_t n = tostr(js, key, buf, sizeof(buf)); key = js_mkstr(js, buf, n); } jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t key_len, key_off = vstr(js, key, &key_len); const char *key_str = (char *) &js->mem[key_off]; jsoff_t off = lkp(js, as_obj, key_str, key_len); return mkval(T_BOOL, off != 0 ? 1 : 0); } static jsval_t builtin_object_isPrototypeOf(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return mkval(T_BOOL, 0); jsval_t proto_obj = resolveprop(js, js->this_val); jsval_t obj = args[0]; uint8_t obj_type = vtype(obj); if (obj_type != T_OBJ && obj_type != T_ARR && obj_type != T_FUNC) return mkval(T_BOOL, 0); uint8_t proto_type = vtype(proto_obj); if (proto_type != T_OBJ && proto_type != T_ARR && proto_type != T_FUNC) return mkval(T_BOOL, 0); jsoff_t proto_data = vdata(proto_obj); jsval_t current = get_proto(js, obj); while (!is_undefined(current) && !is_null(current)) { uint8_t cur_type = vtype(current); if (cur_type != T_OBJ && cur_type != T_ARR && cur_type != T_FUNC) break; if (vdata(current) == proto_data) return mkval(T_BOOL, 1); current = get_proto(js, current); } return mkval(T_BOOL, 0); } static jsval_t builtin_object_propertyIsEnumerable(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return mkval(T_BOOL, 0); jsval_t obj = js->this_val; jsval_t key = args[0]; obj = resolveprop(js, obj); uint8_t t = vtype(obj); if (t != T_OBJ && t != T_ARR && t != T_FUNC) return mkval(T_BOOL, 0); if (vtype(key) != T_STR) { char buf[64]; size_t n = tostr(js, key, buf, sizeof(buf)); key = js_mkstr(js, buf, n); } jsval_t as_obj = (t == T_OBJ) ? obj : mkval(T_OBJ, vdata(obj)); jsoff_t key_len, key_off = vstr(js, key, &key_len); const char *key_str = (char *) &js->mem[key_off]; if (t == T_ARR && streq(key_str, key_len, "length", 6)) { return mkval(T_BOOL, 0); } jsoff_t off = lkp(js, as_obj, key_str, key_len); if (off == 0) return mkval(T_BOOL, 0); jsoff_t obj_off = (jsoff_t)vdata(as_obj); descriptor_entry_t *desc = lookup_descriptor(obj_off, key_str, key_len); if (desc) { return mkval(T_BOOL, desc->enumerable ? 1 : 0); } return mkval(T_BOOL, 1); } static jsval_t builtin_object_toString(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t obj = js->this_val; obj = resolveprop(js, obj); uint8_t t = vtype(obj); if (t == T_OBJ || t == T_ARR || t == T_FUNC) { jsval_t check_obj = (t == T_FUNC) ? mkval(T_OBJ, vdata(obj)) : obj; const char *tostr_tag_key = get_toStringTag_sym_key(); jsoff_t tag_off = lkp(js, check_obj, tostr_tag_key, strlen(tostr_tag_key)); if (tag_off != 0) { jsval_t tag_val = resolveprop(js, mkval(T_PROP, tag_off)); if (vtype(tag_val) == T_STR) { jsoff_t tag_len, tag_str_off = vstr(js, tag_val, &tag_len); const char *tag_str = (const char *)&js->mem[tag_str_off]; char buf[256]; int n = snprintf(buf, sizeof(buf), "[object %.*s]", (int)tag_len, tag_str); return js_mkstr(js, buf, n); } } } const char *type_name = NULL; switch (t) { case T_UNDEF: type_name = "Undefined"; break; case T_NULL: type_name = "Null"; break; case T_BOOL: type_name = "Boolean"; break; case T_NUM: type_name = "Number"; break; case T_STR: type_name = "String"; break; case T_ARR: type_name = "Array"; break; case T_FUNC: type_name = "Function"; break; case T_ERR: type_name = "Error"; break; case T_BIGINT: type_name = "BigInt"; break; case T_OBJ: type_name = "Object"; break; default: type_name = "Unknown"; break; } char buf[256]; int n = snprintf(buf, sizeof(buf), "[object %s]", type_name); return js_mkstr(js, buf, n); } static jsval_t builtin_object_valueOf(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; return js->this_val; } static jsval_t builtin_object_toLocaleString(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; return js_call_toString(js, js->this_val); } static jsval_t builtin_array_push(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; arr = resolveprop(js, arr); if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "push called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (int i = 0; i < nargs; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)len); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, args[i]); len++; } jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) len); setprop(js, arr, len_key, len_val); return len_val; } void js_arr_push(struct js *js, jsval_t arr, jsval_t val) { arr = resolveprop(js, arr); if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) return; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)len); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, val); jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, arr, len_key, tov((double)(len + 1))); } static jsval_t builtin_array_pop(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "pop called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } if (len == 0) return js_mkundef(); len--; char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)len); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t result = js_mkundef(); if (elem_off != 0) { result = resolveprop(js, mkval(T_PROP, elem_off)); } jsval_t len_key = js_mkstr(js, "length", 6); jsval_t len_val = tov((double) len); setprop(js, arr, len_key, len_val); return result; } static jsval_t builtin_array_slice(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "slice called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsoff_t start = 0, end = len; if (nargs >= 1 && vtype(args[0]) == T_NUM) { double d = tod(args[0]); if (d < 0) { start = (jsoff_t) (d + len < 0 ? 0 : d + len); } else { start = (jsoff_t) (d > len ? len : d); } } if (nargs >= 2 && vtype(args[1]) == T_NUM) { double d = tod(args[1]); if (d < 0) { end = (jsoff_t) (d + len < 0 ? 0 : d + len); } else { end = (jsoff_t) (d > len ? len : d); } } if (start > end) start = end; jsval_t result = mkarr(js); if (is_err(result)) return result; jsoff_t result_idx = 0; for (jsoff_t i = start; i < end; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)result_idx); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, elem); } result_idx++; } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) result_idx)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_join(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "join called on non-array"); } const char *sep = ","; jsoff_t sep_len = 1; if (nargs >= 1) { if (vtype(args[0]) == T_STR) { sep_len = 0; jsoff_t sep_off = vstr(js, args[0], &sep_len); sep = (const char *) &js->mem[sep_off]; } else if (vtype(args[0]) != T_UNDEF) { const char *sep_str = js_str(js, args[0]); sep = sep_str; sep_len = (jsoff_t) strlen(sep_str); } } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } if (len == 0) return js_mkstr(js, "", 0); char result[1024] = ""; size_t result_len = 0; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (i > 0 && result_len + sep_len < sizeof(result)) { memcpy(result + result_len, sep, sep_len); result_len += sep_len; } if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); if (vtype(elem) == T_STR) { jsoff_t elem_len, elem_off_str = vstr(js, elem, &elem_len); if (result_len + elem_len < sizeof(result)) { memcpy(result + result_len, &js->mem[elem_off_str], elem_len); result_len += elem_len; } } else if (vtype(elem) == T_NUM) { char numstr[32]; snprintf(numstr, sizeof(numstr), "%g", tod(elem)); size_t num_len = strlen(numstr); if (result_len + num_len < sizeof(result)) { memcpy(result + result_len, numstr, num_len); result_len += num_len; } } else if (vtype(elem) == T_BOOL) { const char *boolstr = vdata(elem) ? "true" : "false"; size_t bool_len = strlen(boolstr); if (result_len + bool_len < sizeof(result)) { memcpy(result + result_len, boolstr, bool_len); result_len += bool_len; } } } } return js_mkstr(js, result, result_len); } static jsval_t builtin_array_includes(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "includes called on non-array"); } if (nargs == 0) return mkval(T_BOOL, 0); jsval_t search = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); if (vtype(elem) == vtype(search)) { if (vtype(elem) == T_NUM && tod(elem) == tod(search)) { return mkval(T_BOOL, 1); } else if (vtype(elem) == T_BOOL && vdata(elem) == vdata(search)) { return mkval(T_BOOL, 1); } else if (vtype(elem) == T_STR) { jsoff_t elem_len, elem_off_str = vstr(js, elem, &elem_len); jsoff_t search_len, search_off = vstr(js, search, &search_len); if (elem_len == search_len && memcmp(&js->mem[elem_off_str], &js->mem[search_off], elem_len) == 0) { return mkval(T_BOOL, 1); } } else if ((vtype(elem) == T_OBJ || vtype(elem) == T_ARR || vtype(elem) == T_FUNC) && vdata(elem) == vdata(search)) { return mkval(T_BOOL, 1); } } } } return mkval(T_BOOL, 0); } static jsval_t builtin_array_every(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "every called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "every requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off == 0) continue; jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t result = call_js_with_args(js, callback, call_args, 3); if (is_err(result)) return result; if (!js_truthy(js, result)) { return mkval(T_BOOL, 0); } } return mkval(T_BOOL, 1); } static jsval_t builtin_array_reverse(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "reverse called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len / 2; i++) { jsoff_t j = len - 1 - i; char idx_i[16], idx_j[16]; snprintf(idx_i, sizeof(idx_i), "%u", (unsigned) i); snprintf(idx_j, sizeof(idx_j), "%u", (unsigned) j); jsoff_t off_i = lkp(js, arr, idx_i, strlen(idx_i)); jsoff_t off_j = lkp(js, arr, idx_j, strlen(idx_j)); jsval_t val_i = off_i ? resolveprop(js, mkval(T_PROP, off_i)) : js_mkundef(); jsval_t val_j = off_j ? resolveprop(js, mkval(T_PROP, off_j)) : js_mkundef(); jsval_t key_i = js_mkstr(js, idx_i, strlen(idx_i)); jsval_t key_j = js_mkstr(js, idx_j, strlen(idx_j)); setprop(js, arr, key_i, val_j); setprop(js, arr, key_j, val_i); } return arr; } static jsval_t builtin_array_map(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "map called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "map requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t mapped = call_js_with_args(js, callback, call_args, 3); if (is_err(mapped)) return mapped; jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, mapped); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_filter(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "filter called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "filter requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; jsoff_t result_idx = 0; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off == 0) continue; jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t test = call_js_with_args(js, callback, call_args, 3); if (is_err(test)) return test; if (js_truthy(js, test)) { char res_idx[16]; snprintf(res_idx, sizeof(res_idx), "%u", (unsigned) result_idx); jsval_t key = js_mkstr(js, res_idx, strlen(res_idx)); setprop(js, result, key, elem); result_idx++; } } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) result_idx)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_reduce(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "reduce called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "reduce requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsoff_t start_idx = 0; jsval_t accumulator; bool has_initial = (nargs >= 2); if (has_initial) { accumulator = args[1]; } else { bool found = false; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off != 0) { accumulator = resolveprop(js, mkval(T_PROP, elem_off)); start_idx = i + 1; found = true; break; } } if (!found) return js_mkerr(js, "reduce of empty array with no initial value"); } for (jsoff_t i = start_idx; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off == 0) continue; jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); jsval_t call_args[4] = { accumulator, elem, tov((double)i), arr }; accumulator = call_js_with_args(js, callback, call_args, 4); if (is_err(accumulator)) return accumulator; } return accumulator; } static void flat_helper(struct js *js, jsval_t arr, jsval_t result, jsoff_t *result_idx, int depth) { jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); if (depth > 0 && (vtype(elem) == T_ARR || vtype(elem) == T_OBJ)) { flat_helper(js, elem, result, result_idx, depth - 1); } else { char res_idx[16]; snprintf(res_idx, sizeof(res_idx), "%u", (unsigned) *result_idx); jsval_t key = js_mkstr(js, res_idx, strlen(res_idx)); setprop(js, result, key, elem); (*result_idx)++; } } } } static jsval_t builtin_array_flat(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "flat called on non-array"); } int depth = 1; if (nargs >= 1 && vtype(args[0]) == T_NUM) { depth = (int) tod(args[0]); if (depth < 0) depth = 0; } jsval_t result = mkarr(js); if (is_err(result)) return result; jsoff_t result_idx = 0; flat_helper(js, arr, result, &result_idx, depth); jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) result_idx)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_concat(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "concat called on non-array"); } jsval_t result = mkarr(js); if (is_err(result)) return result; jsoff_t result_idx = 0; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); char res_idx[16]; snprintf(res_idx, sizeof(res_idx), "%u", (unsigned) result_idx); jsval_t key = js_mkstr(js, res_idx, strlen(res_idx)); setprop(js, result, key, elem); } result_idx++; } for (int a = 0; a < nargs; a++) { jsval_t arg = args[a]; if (vtype(arg) == T_ARR || vtype(arg) == T_OBJ) { jsoff_t arg_off = lkp_interned(js, arg, INTERN_LENGTH, 6); jsoff_t arg_len = 0; if (arg_off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, arg_off)); if (vtype(len_val) == T_NUM) arg_len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < arg_len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arg, idxstr, idxlen); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); char res_idx[16]; size_t res_idx_len = uint_to_str(res_idx, sizeof(res_idx), (unsigned)result_idx); jsval_t key = js_mkstr(js, res_idx, res_idx_len); setprop(js, result, key, elem); } result_idx++; } } else { char res_idx[16]; snprintf(res_idx, sizeof(res_idx), "%u", (unsigned) result_idx); jsval_t key = js_mkstr(js, res_idx, strlen(res_idx)); setprop(js, result, key, arg); result_idx++; } } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) result_idx)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_at(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "at called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_NUM) return js_mkundef(); jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } int idx = (int) tod(args[0]); if (idx < 0) idx = (int)len + idx; if (idx < 0 || (jsoff_t)idx >= len) return js_mkundef(); char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); return elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); } static jsval_t builtin_array_fill(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "fill called on non-array"); } jsval_t value = nargs >= 1 ? args[0] : js_mkundef(); jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsoff_t start = 0, end = len; if (nargs >= 2 && vtype(args[1]) == T_NUM) { int s = (int) tod(args[1]); if (s < 0) s = (int)len + s; if (s < 0) s = 0; start = (jsoff_t) s; } if (nargs >= 3 && vtype(args[2]) == T_NUM) { int e = (int) tod(args[2]); if (e < 0) e = (int)len + e; if (e < 0) e = 0; end = (jsoff_t) e; } if (start > len) start = len; if (end > len) end = len; for (jsoff_t i = start; i < end; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, value); } return arr; } static jsval_t builtin_array_find(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "find called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "find requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t result = call_js_with_args(js, callback, call_args, 3); if (is_err(result)) return result; if (js_truthy(js, result)) return elem; } return js_mkundef(); } static jsval_t builtin_array_findIndex(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "findIndex called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "findIndex requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t result = call_js_with_args(js, callback, call_args, 3); if (is_err(result)) return result; if (js_truthy(js, result)) return tov((double)i); } return tov(-1); } static jsval_t builtin_array_findLast(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "findLast called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "findLast requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = len; i > 0; i--) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)(i - 1)); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[3] = { elem, tov((double)(i - 1)), arr }; jsval_t result = call_js_with_args(js, callback, call_args, 3); if (is_err(result)) return result; if (js_truthy(js, result)) return elem; } return js_mkundef(); } static jsval_t builtin_array_findLastIndex(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "findLastIndex called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "findLastIndex requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = len; i > 0; i--) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)(i - 1)); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[3] = { elem, tov((double)(i - 1)), arr }; jsval_t result = call_js_with_args(js, callback, call_args, 3); if (is_err(result)) return result; if (js_truthy(js, result)) return tov((double)(i - 1)); } return tov(-1); } static jsval_t builtin_array_flatMap(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "flatMap called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "flatMap requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; jsoff_t result_idx = 0; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t mapped = call_js_with_args(js, callback, call_args, 3); if (is_err(mapped)) return mapped; if (vtype(mapped) == T_ARR || vtype(mapped) == T_OBJ) { jsoff_t m_off = lkp_interned(js, mapped, INTERN_LENGTH, 6); jsoff_t m_len = 0; if (m_off != 0) { jsval_t m_len_val = resolveprop(js, mkval(T_PROP, m_off)); if (vtype(m_len_val) == T_NUM) m_len = (jsoff_t) tod(m_len_val); } for (jsoff_t j = 0; j < m_len; j++) { char jstr[16]; snprintf(jstr, sizeof(jstr), "%u", (unsigned) j); jsoff_t m_elem_off = lkp(js, mapped, jstr, strlen(jstr)); if (m_elem_off != 0) { jsval_t m_elem = resolveprop(js, mkval(T_PROP, m_elem_off)); char res_idx[16]; snprintf(res_idx, sizeof(res_idx), "%u", (unsigned) result_idx); jsval_t key = js_mkstr(js, res_idx, strlen(res_idx)); setprop(js, result, key, m_elem); } result_idx++; } } else { char res_idx[16]; snprintf(res_idx, sizeof(res_idx), "%u", (unsigned) result_idx); jsval_t key = js_mkstr(js, res_idx, strlen(res_idx)); setprop(js, result, key, mapped); result_idx++; } } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) result_idx)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_forEach(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "forEach called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "forEach requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off == 0) continue; jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t result = call_js_with_args(js, callback, call_args, 3); if (is_err(result)) return result; } return js_mkundef(); } static int js_compare_values(struct js *js, jsval_t a, jsval_t b, jsval_t compareFn) { if (vtype(compareFn) == T_FUNC) { jsval_t call_args[2] = { a, b }; jsval_t result = call_js_with_args(js, compareFn, call_args, 2); if (vtype(result) == T_NUM) return (int) tod(result); return 0; } const char *sa = js_str(js, a); const char *sb = js_str(js, b); return strcmp(sa, sb); } static jsval_t builtin_array_indexOf(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "indexOf called on non-array"); } if (nargs == 0) return tov(-1); jsval_t search = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsoff_t start = 0; if (nargs >= 2 && vtype(args[1]) == T_NUM) { int s = (int) tod(args[1]); if (s < 0) s = (int)len + s; if (s < 0) s = 0; start = (jsoff_t) s; } for (jsoff_t i = start; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); if (vtype(elem) == vtype(search)) { if (vtype(elem) == T_NUM && tod(elem) == tod(search)) return tov((double)i); if (vtype(elem) == T_BOOL && vdata(elem) == vdata(search)) return tov((double)i); if (vtype(elem) == T_STR) { jsoff_t el, eo = vstr(js, elem, &el); jsoff_t sl, so = vstr(js, search, &sl); if (el == sl && memcmp(&js->mem[eo], &js->mem[so], el) == 0) return tov((double)i); } if ((vtype(elem) == T_OBJ || vtype(elem) == T_ARR || vtype(elem) == T_FUNC) && vdata(elem) == vdata(search)) return tov((double)i); } } } return tov(-1); } static jsval_t builtin_array_lastIndexOf(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "lastIndexOf called on non-array"); } if (nargs == 0) return tov(-1); jsval_t search = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } int start = (int)len - 1; if (nargs >= 2 && vtype(args[1]) == T_NUM) { start = (int) tod(args[1]); if (start < 0) start = (int)len + start; } if (start >= (int)len) start = (int)len - 1; for (int i = start; i >= 0; i--) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); if (vtype(elem) == vtype(search)) { if (vtype(elem) == T_NUM && tod(elem) == tod(search)) return tov((double)i); if (vtype(elem) == T_BOOL && vdata(elem) == vdata(search)) return tov((double)i); if (vtype(elem) == T_STR) { jsoff_t el, eo = vstr(js, elem, &el); jsoff_t sl, so = vstr(js, search, &sl); if (el == sl && memcmp(&js->mem[eo], &js->mem[so], el) == 0) return tov((double)i); } if ((vtype(elem) == T_OBJ || vtype(elem) == T_ARR || vtype(elem) == T_FUNC) && vdata(elem) == vdata(search)) return tov((double)i); } } } return tov(-1); } static jsval_t builtin_array_reduceRight(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "reduceRight called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "reduceRight requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } int start_idx = (int)len - 1; jsval_t accumulator; if (nargs >= 2) { accumulator = args[1]; } else { if (len == 0) return js_mkerr(js, "reduceRight of empty array with no initial value"); char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)(len - 1)); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); accumulator = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); start_idx = (int)len - 2; } for (int i = start_idx; i >= 0; i--) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[4] = { accumulator, elem, tov((double)i), arr }; accumulator = call_js_with_args(js, callback, call_args, 4); if (is_err(accumulator)) return accumulator; } return accumulator; } static jsval_t builtin_array_shift(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "shift called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } if (len == 0) return js_mkundef(); jsoff_t first_off = lkp(js, arr, "0", 1); jsval_t first = first_off ? resolveprop(js, mkval(T_PROP, first_off)) : js_mkundef(); for (jsoff_t i = 1; i < len; i++) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned) i); snprintf(dst, sizeof(dst), "%u", (unsigned)(i - 1)); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, arr, key, elem); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, arr, len_key, tov((double)(len - 1))); return first; } static jsval_t builtin_array_unshift(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "unshift called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (int i = (int)len - 1; i >= 0; i--) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned) i); snprintf(dst, sizeof(dst), "%u", (unsigned)(i + nargs)); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, arr, key, elem); } for (int i = 0; i < nargs; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, args[i]); } jsval_t len_key = js_mkstr(js, "length", 6); jsoff_t new_len = len + nargs; setprop(js, arr, len_key, tov((double) new_len)); return tov((double) new_len); } static jsval_t builtin_array_some(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "some called on non-array"); } if (nargs == 0 || vtype(args[0]) != T_FUNC) { return js_mkerr(js, "some requires a function argument"); } jsval_t callback = args[0]; jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t call_args[3] = { elem, tov((double)i), arr }; jsval_t result = call_js_with_args(js, callback, call_args, 3); if (is_err(result)) return result; if (js_truthy(js, result)) return mkval(T_BOOL, 1); } return mkval(T_BOOL, 0); } static jsval_t builtin_array_sort(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "sort called on non-array"); } jsval_t compareFn = js_mkundef(); if (nargs >= 1 && vtype(args[0]) != T_UNDEF) { if (vtype(args[0]) != T_FUNC && vtype(args[0]) != T_CFUNC) { return js_mkerr_typed(js, JS_ERR_TYPE, "compareFn must be a function or undefined"); } compareFn = args[0]; } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { for (jsoff_t j = i + 1; j < len; j++) { char idx_i[16], idx_j[16]; snprintf(idx_i, sizeof(idx_i), "%u", (unsigned) i); snprintf(idx_j, sizeof(idx_j), "%u", (unsigned) j); jsoff_t off_i = lkp(js, arr, idx_i, strlen(idx_i)); jsoff_t off_j = lkp(js, arr, idx_j, strlen(idx_j)); jsval_t val_i = off_i ? resolveprop(js, mkval(T_PROP, off_i)) : js_mkundef(); jsval_t val_j = off_j ? resolveprop(js, mkval(T_PROP, off_j)) : js_mkundef(); if (js_compare_values(js, val_i, val_j, compareFn) > 0) { jsval_t key_i = js_mkstr(js, idx_i, strlen(idx_i)); jsval_t key_j = js_mkstr(js, idx_j, strlen(idx_j)); setprop(js, arr, key_i, val_j); setprop(js, arr, key_j, val_i); } } } return arr; } static jsval_t builtin_array_splice(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "splice called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } int start = 0; if (nargs >= 1 && vtype(args[0]) == T_NUM) { start = (int) tod(args[0]); if (start < 0) start = (int)len + start; if (start < 0) start = 0; if (start > (int)len) start = (int)len; } int deleteCount = (int)len - start; if (nargs >= 2 && vtype(args[1]) == T_NUM) { deleteCount = (int) tod(args[1]); if (deleteCount < 0) deleteCount = 0; if (deleteCount > (int)len - start) deleteCount = (int)len - start; } int insertCount = nargs > 2 ? nargs - 2 : 0; jsval_t removed = mkarr(js); if (is_err(removed)) return removed; for (int i = 0; i < deleteCount; i++) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned)(start + i)); snprintf(dst, sizeof(dst), "%u", (unsigned) i); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); if (elem_off != 0) { jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, removed, key, elem); } } jsval_t rem_len_key = js_mkstr(js, "length", 6); setprop(js, removed, rem_len_key, tov((double) deleteCount)); int shift = insertCount - deleteCount; if (shift > 0) { for (int i = (int)len - 1; i >= start + deleteCount; i--) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned) i); snprintf(dst, sizeof(dst), "%u", (unsigned)(i + shift)); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, arr, key, elem); } } else if (shift < 0) { for (int i = start + deleteCount; i < (int)len; i++) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned) i); snprintf(dst, sizeof(dst), "%u", (unsigned)(i + shift)); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, arr, key, elem); } } for (int i = 0; i < insertCount; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)(start + i)); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, args[2 + i]); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, arr, len_key, tov((double)((int)len + shift))); return mkval(T_ARR, vdata(removed)); } static jsval_t builtin_array_copyWithin(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "copyWithin called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } int target = 0, start = 0, end = (int)len; if (nargs >= 1 && vtype(args[0]) == T_NUM) { target = (int) tod(args[0]); if (target < 0) target = (int)len + target; if (target < 0) target = 0; } if (nargs >= 2 && vtype(args[1]) == T_NUM) { start = (int) tod(args[1]); if (start < 0) start = (int)len + start; if (start < 0) start = 0; } if (nargs >= 3 && vtype(args[2]) == T_NUM) { end = (int) tod(args[2]); if (end < 0) end = (int)len + end; if (end < 0) end = 0; } if (end > (int)len) end = (int)len; int count = end - start; if (count > (int)len - target) count = (int)len - target; jsval_t *temp = (jsval_t *)malloc(count * sizeof(jsval_t)); for (int i = 0; i < count; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)(start + i)); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); temp[i] = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); } for (int i = 0; i < count; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)(target + i)); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, temp[i]); } free(temp); return arr; } static jsval_t builtin_array_toReversed(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "toReversed called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; for (jsoff_t i = 0; i < len; i++) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned)(len - 1 - i)); snprintf(dst, sizeof(dst), "%u", (unsigned) i); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, result, key, elem); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_toSorted(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "toSorted called on non-array"); } jsval_t compareFn = (nargs >= 1 && vtype(args[0]) == T_FUNC) ? args[0] : js_mkundef(); jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, elem); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); for (jsoff_t i = 0; i < len; i++) { for (jsoff_t j = i + 1; j < len; j++) { char idx_i[16], idx_j[16]; snprintf(idx_i, sizeof(idx_i), "%u", (unsigned) i); snprintf(idx_j, sizeof(idx_j), "%u", (unsigned) j); jsoff_t off_i = lkp(js, result, idx_i, strlen(idx_i)); jsoff_t off_j = lkp(js, result, idx_j, strlen(idx_j)); jsval_t val_i = off_i ? resolveprop(js, mkval(T_PROP, off_i)) : js_mkundef(); jsval_t val_j = off_j ? resolveprop(js, mkval(T_PROP, off_j)) : js_mkundef(); if (js_compare_values(js, val_i, val_j, compareFn) > 0) { jsval_t key_i = js_mkstr(js, idx_i, strlen(idx_i)); jsval_t key_j = js_mkstr(js, idx_j, strlen(idx_j)); setprop(js, result, key_i, val_j); setprop(js, result, key_j, val_i); } } } return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_toSpliced(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "toSpliced called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } int start = 0; if (nargs >= 1 && vtype(args[0]) == T_NUM) { start = (int) tod(args[0]); if (start < 0) start = (int)len + start; if (start < 0) start = 0; if (start > (int)len) start = (int)len; } int deleteCount = (int)len - start; if (nargs >= 2 && vtype(args[1]) == T_NUM) { deleteCount = (int) tod(args[1]); if (deleteCount < 0) deleteCount = 0; if (deleteCount > (int)len - start) deleteCount = (int)len - start; } int insertCount = nargs > 2 ? nargs - 2 : 0; jsval_t result = mkarr(js); if (is_err(result)) return result; jsoff_t result_idx = 0; for (int i = 0; i < start; i++) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned) i); snprintf(dst, sizeof(dst), "%u", (unsigned) result_idx); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, result, key, elem); result_idx++; } for (int i = 0; i < insertCount; i++) { char dst[16]; snprintf(dst, sizeof(dst), "%u", (unsigned) result_idx); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, result, key, args[2 + i]); result_idx++; } for (int i = start + deleteCount; i < (int)len; i++) { char src[16], dst[16]; snprintf(src, sizeof(src), "%u", (unsigned) i); snprintf(dst, sizeof(dst), "%u", (unsigned) result_idx); jsoff_t elem_off = lkp(js, arr, src, strlen(src)); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, dst, strlen(dst)); setprop(js, result, key, elem); result_idx++; } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) result_idx)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_with(struct js *js, jsval_t *args, int nargs) { jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "with called on non-array"); } if (nargs < 2) return js_mkerr(js, "with requires index and value arguments"); jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } int idx = (int) tod(args[0]); if (idx < 0) idx = (int)len + idx; if (idx < 0 || (jsoff_t)idx >= len) return js_mkerr(js, "Invalid index"); jsval_t result = mkarr(js); if (is_err(result)) return result; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsval_t elem; if ((jsoff_t)idx == i) { elem = args[1]; } else { jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); } jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, elem); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_keys(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "keys called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, tov((double) i)); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_values(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "values called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, elem); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_entries(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR && vtype(arr) != T_OBJ) { return js_mkerr(js, "entries called on non-array"); } jsoff_t off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } jsval_t result = mkarr(js); if (is_err(result)) return result; for (jsoff_t i = 0; i < len; i++) { jsval_t entry = mkarr(js); if (is_err(entry)) return entry; char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, arr, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); setprop(js, entry, js_mkstr(js, "0", 1), tov((double) i)); setprop(js, entry, js_mkstr(js, "1", 1), elem); setprop(js, entry, js_mkstr(js, "length", 6), tov(2)); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, mkval(T_ARR, vdata(entry))); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); return mkval(T_ARR, vdata(result)); } static jsval_t builtin_array_toString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; jsval_t sep_args[1] = { js_mkstr(js, ",", 1) }; jsval_t old_this = js->this_val; js->this_val = arr; jsval_t result = builtin_array_join(js, sep_args, 1); js->this_val = old_this; return result; } static jsval_t builtin_array_toLocaleString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t arr = js->this_val; if (vtype(arr) != T_ARR) return js_mkerr(js, "toLocaleString called on non-array"); jsoff_t len_off = lkp_interned(js, arr, INTERN_LENGTH, 6); jsoff_t len = 0; if (len_off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); if (vtype(len_val) == T_NUM) len = (jsoff_t)tod(len_val); } if (len == 0) return js_mkstr(js, "", 0); char *result = NULL; size_t result_len = 0, result_cap = 256; result = (char *)ANT_GC_MALLOC(result_cap); if (!result) return js_mkerr(js, "oom"); for (jsoff_t i = 0; i < len; i++) { if (i > 0) { if (result_len + 1 >= result_cap) { result_cap *= 2; char *new_result = (char *)ANT_GC_MALLOC(result_cap); if (!new_result) { ANT_GC_FREE(result); return js_mkerr(js, "oom"); } memcpy(new_result, result, result_len); ANT_GC_FREE(result); result = new_result; } result[result_len++] = ','; } char idx_str[16]; snprintf(idx_str, sizeof(idx_str), "%u", (unsigned)i); jsoff_t elem_off = lkp(js, arr, idx_str, strlen(idx_str)); if (elem_off == 0) continue; jsval_t elem = resolveprop(js, mkval(T_PROP, elem_off)); if (vtype(elem) == T_NULL || vtype(elem) == T_UNDEF) continue; char buf[64]; size_t elem_len = tostr(js, elem, buf, sizeof(buf)); if (result_len + elem_len >= result_cap) { while (result_len + elem_len >= result_cap) result_cap *= 2; char *new_result = (char *)ANT_GC_MALLOC(result_cap); if (!new_result) { ANT_GC_FREE(result); return js_mkerr(js, "oom"); } memcpy(new_result, result, result_len); ANT_GC_FREE(result); result = new_result; } memcpy(result + result_len, buf, elem_len); result_len += elem_len; } jsval_t ret = js_mkstr(js, result, result_len); ANT_GC_FREE(result); return ret; } static jsval_t builtin_Array_isArray(struct js *js, jsval_t *args, int nargs) { (void) js; if (nargs == 0) return mkval(T_BOOL, 0); return mkval(T_BOOL, vtype(args[0]) == T_ARR ? 1 : 0); } static jsval_t builtin_Array_from(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return mkarr(js); jsval_t src = args[0]; jsval_t mapFn = (nargs >= 2 && vtype(args[1]) == T_FUNC) ? args[1] : js_mkundef(); jsval_t result = mkarr(js); if (is_err(result)) return result; if (vtype(src) == T_STR) { jsoff_t str_len, str_off = vstr(js, src, &str_len); const char *str_ptr = (const char *)&js->mem[str_off]; for (jsoff_t i = 0; i < str_len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsval_t elem = js_mkstr(js, str_ptr + i, 1); if (vtype(mapFn) == T_FUNC) { jsval_t call_args[2] = { elem, tov((double)i) }; elem = call_js_with_args(js, mapFn, call_args, 2); if (is_err(elem)) return elem; } jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, elem); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) str_len)); } else if (vtype(src) == T_ARR || vtype(src) == T_OBJ) { jsoff_t off = lkp_interned(js, src, INTERN_LENGTH, 6); jsoff_t len = 0; if (off != 0) { jsval_t len_val = resolveprop(js, mkval(T_PROP, off)); if (vtype(len_val) == T_NUM) len = (jsoff_t) tod(len_val); } for (jsoff_t i = 0; i < len; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsoff_t elem_off = lkp(js, src, idxstr, idxlen); jsval_t elem = elem_off ? resolveprop(js, mkval(T_PROP, elem_off)) : js_mkundef(); if (vtype(mapFn) == T_FUNC) { jsval_t call_args[2] = { elem, tov((double)i) }; elem = call_js_with_args(js, mapFn, call_args, 2); if (is_err(elem)) return elem; } jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, result, key, elem); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, result, len_key, tov((double) len)); } return mkval(T_ARR, vdata(result)); } static jsval_t builtin_Array_of(struct js *js, jsval_t *args, int nargs) { jsval_t arr = mkarr(js); if (is_err(arr)) return arr; for (int i = 0; i < nargs; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)i); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, arr, key, args[i]); } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, arr, len_key, tov((double) nargs)); return mkval(T_ARR, vdata(arr)); } static jsval_t builtin_string_indexOf(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "indexOf called on non-string"); if (nargs == 0) return tov(-1); jsval_t search = args[0]; if (vtype(search) != T_STR) return tov(-1); jsoff_t str_len, str_off = vstr(js, str, &str_len); jsoff_t search_len, search_off = vstr(js, search, &search_len); jsoff_t start = 0; if (nargs >= 2 && vtype(args[1]) == T_NUM) { double pos = tod(args[1]); if (pos < 0) pos = 0; if (pos > str_len) pos = str_len; start = (jsoff_t) pos; } if (search_len == 0) return tov((double) start); if (start + search_len > str_len) return tov(-1); const char *str_ptr = (char *) &js->mem[str_off]; const char *search_ptr = (char *) &js->mem[search_off]; for (jsoff_t i = start; i <= str_len - search_len; i++) { if (memcmp(str_ptr + i, search_ptr, search_len) == 0) return tov((double) i); } return tov(-1); } static jsval_t builtin_string_substring(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "substring called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsoff_t start = 0, end = str_len; if (nargs >= 1 && vtype(args[0]) == T_NUM) { double d = tod(args[0]); start = (jsoff_t) (d < 0 ? 0 : (d > str_len ? str_len : d)); } if (nargs >= 2 && vtype(args[1]) == T_NUM) { double d = tod(args[1]); end = (jsoff_t) (d < 0 ? 0 : (d > str_len ? str_len : d)); } if (start > end) { jsoff_t tmp = start; start = end; end = tmp; } jsoff_t sub_len = end - start; return js_mkstr(js, str_ptr + start, sub_len); } static jsval_t builtin_string_substr(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "substr called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; if (nargs < 1) return js_mkstr(js, str_ptr, str_len); double d_start = tod(args[0]); jsoff_t start; if (d_start < 0) { start = (jsoff_t)((double)str_len + d_start); if ((int)start < 0) start = 0; } else { start = (jsoff_t)d_start; } if (start > str_len) start = str_len; jsoff_t len = str_len - start; if (nargs >= 2 && vtype(args[1]) == T_NUM) { double d = tod(args[1]); if (d < 0) d = 0; len = (jsoff_t)d; } if (start + len > str_len) len = str_len - start; return js_mkstr(js, str_ptr + start, len); } static jsval_t builtin_string_split(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "split called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsval_t arr = mkarr(js); if (is_err(arr)) return arr; uint32_t limit = UINT32_MAX; if (nargs >= 2 && vtype(args[1]) == T_NUM) { double d = tod(args[1]); if (d >= 0 && d <= UINT32_MAX) { limit = (uint32_t)d; } } if (limit == 0) { setprop(js, arr, js_mkstr(js, "length", 6), tov(0)); return mkval(T_ARR, vdata(arr)); } if (nargs == 0) goto return_whole; jsval_t sep_arg = args[0]; if (vtype(sep_arg) == T_OBJ) { jsoff_t source_off = lkp(js, sep_arg, "source", 6); if (source_off == 0) goto return_whole; jsval_t source_val = resolveprop(js, mkval(T_PROP, source_off)); if (vtype(source_val) != T_STR) goto return_whole; jsoff_t plen, poff = vstr(js, source_val, &plen); const char *pattern_ptr = (char *) &js->mem[poff]; if (plen == 0 || (plen == 4 && memcmp(pattern_ptr, "(?:)", 4) == 0)) { jsoff_t idx = 0; for (jsoff_t i = 0; i < str_len && idx < limit; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t part = js_mkstr(js, str_ptr + i, 1); setprop(js, arr, key, part); idx++; } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, arr, len_key, tov((double)idx)); return mkval(T_ARR, vdata(arr)); } char pcre2_pattern[512]; size_t pcre2_len = js_to_pcre2_pattern(pattern_ptr, plen, pcre2_pattern, sizeof(pcre2_pattern)); uint32_t options = PCRE2_UTF | PCRE2_UCP | PCRE2_MATCH_UNSET_BACKREF; int errcode; PCRE2_SIZE erroffset; pcre2_code *re = pcre2_compile((PCRE2_SPTR)pcre2_pattern, pcre2_len, options, &errcode, &erroffset, NULL); if (re == NULL) goto return_whole; pcre2_match_data *match_data = pcre2_match_data_create_from_pattern(re, NULL); uint32_t capture_count; pcre2_pattern_info(re, PCRE2_INFO_CAPTURECOUNT, &capture_count); if (str_len == 0) { int rc = pcre2_match(re, (PCRE2_SPTR)str_ptr, 0, 0, 0, match_data, NULL); if (rc >= 0) { pcre2_match_data_free(match_data); pcre2_code_free(re); setprop(js, arr, js_mkstr(js, "length", 6), tov(0)); return mkval(T_ARR, vdata(arr)); } } jsoff_t idx = 0; PCRE2_SIZE search_pos = 0; PCRE2_SIZE segment_start = 0; PCRE2_SIZE last_match_end = (PCRE2_SIZE)-1; bool had_any_split = false; while (idx < limit && search_pos <= str_len) { int rc = pcre2_match(re, (PCRE2_SPTR)str_ptr, str_len, search_pos, 0, match_data, NULL); if (rc < 0) break; PCRE2_SIZE *ovector = pcre2_get_ovector_pointer(match_data); PCRE2_SIZE match_start = ovector[0]; PCRE2_SIZE match_end = ovector[1]; if (match_start == match_end && match_start == last_match_end) { search_pos = match_end + 1; continue; } if (match_start == match_end && capture_count > 0) { bool is_pure_empty_capture = true; for (uint32_t i = 1; i <= capture_count; i++) { PCRE2_SIZE cap_start = ovector[2*i]; PCRE2_SIZE cap_end = ovector[2*i+1]; if (cap_start == PCRE2_UNSET || cap_end != cap_start) { is_pure_empty_capture = false; break; } } if (is_pure_empty_capture) { search_pos = match_end + 1; continue; } } had_any_split = true; char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t part = js_mkstr(js, str_ptr + segment_start, match_start - segment_start); setprop(js, arr, key, part); idx++; for (uint32_t i = 1; i <= capture_count && idx < limit; i++) { PCRE2_SIZE cap_start = ovector[2*i]; PCRE2_SIZE cap_end = ovector[2*i+1]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); key = js_mkstr(js, idxstr, idxlen); if (cap_start == PCRE2_UNSET) { setprop(js, arr, key, js_mkundef()); } else { part = js_mkstr(js, str_ptr + cap_start, cap_end - cap_start); setprop(js, arr, key, part); } idx++; } last_match_end = match_end; segment_start = match_end; if (match_start == match_end) { search_pos = match_end + 1; } else { search_pos = match_end; } } if (!had_any_split) { pcre2_match_data_free(match_data); pcre2_code_free(re); setprop(js, arr, js_mkstr(js, "0", 1), js_mkstr(js, str_ptr, str_len)); setprop(js, arr, js_mkstr(js, "length", 6), tov(1)); return mkval(T_ARR, vdata(arr)); } if (idx < limit) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t part = js_mkstr(js, str_ptr + segment_start, str_len - segment_start); setprop(js, arr, key, part); idx++; } pcre2_match_data_free(match_data); pcre2_code_free(re); jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, arr, len_key, tov((double)idx)); return mkval(T_ARR, vdata(arr)); } if (vtype(sep_arg) != T_STR) goto return_whole; jsoff_t sep_len, sep_off = vstr(js, sep_arg, &sep_len); const char *sep_ptr = (char *) &js->mem[sep_off]; jsoff_t idx = 0, start = 0; if (sep_len == 0) { for (jsoff_t i = 0; i < str_len && idx < limit; i++) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t part = js_mkstr(js, str_ptr + i, 1); setprop(js, arr, key, part); idx++; } goto set_length; } for (jsoff_t i = 0; i + sep_len <= str_len && idx < limit; i++) { if (memcmp(str_ptr + i, sep_ptr, sep_len) != 0) continue; char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t part = js_mkstr(js, str_ptr + start, i - start); setprop(js, arr, key, part); idx++; start = i + sep_len; i += sep_len - 1; } if (idx < limit && start <= str_len) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); jsval_t part = js_mkstr(js, str_ptr + start, str_len - start); setprop(js, arr, key, part); idx++; } set_length:; jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, arr, len_key, tov((double) idx)); return mkval(T_ARR, vdata(arr)); return_whole: if (limit > 0) { setprop(js, arr, js_mkstr(js, "0", 1), str); setprop(js, arr, js_mkstr(js, "length", 6), tov(1)); } else { setprop(js, arr, js_mkstr(js, "length", 6), tov(0)); } return mkval(T_ARR, vdata(arr)); } static jsval_t builtin_string_slice(struct js *js, jsval_t *args, int nargs) { jsval_t this_unwrapped = unwrap_primitive(js, js->this_val); jsval_t str = js_tostring_val(js, this_unwrapped); if (is_err(str)) return str; jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsoff_t start = 0, end = str_len; if (nargs >= 1 && vtype(args[0]) == T_NUM) { double d = tod(args[0]); if (d < 0) { start = (jsoff_t) (d + str_len < 0 ? 0 : d + str_len); } else { start = (jsoff_t) (d > str_len ? str_len : d); } } if (nargs >= 2 && vtype(args[1]) == T_NUM) { double d = tod(args[1]); if (d < 0) { end = (jsoff_t) (d + str_len < 0 ? 0 : d + str_len); } else { end = (jsoff_t) (d > str_len ? str_len : d); } } if (start > end) start = end; jsoff_t sub_len = end - start; return js_mkstr(js, str_ptr + start, sub_len); } static jsval_t builtin_string_includes(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "includes called on non-string"); if (nargs == 0) return mkval(T_BOOL, 0); jsval_t search = args[0]; if (vtype(search) != T_STR) return mkval(T_BOOL, 0); jsoff_t str_len, str_off = vstr(js, str, &str_len); jsoff_t search_len, search_off = vstr(js, search, &search_len); const char *str_ptr = (char *) &js->mem[str_off]; const char *search_ptr = (char *) &js->mem[search_off]; if (search_len == 0) return mkval(T_BOOL, 1); for (jsoff_t i = 0; i <= str_len - search_len; i++) { if (memcmp(str_ptr + i, search_ptr, search_len) == 0) { return mkval(T_BOOL, 1); } } return mkval(T_BOOL, 0); } static jsval_t builtin_string_startsWith(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "startsWith called on non-string"); if (nargs == 0) return mkval(T_BOOL, 0); jsval_t search = args[0]; if (vtype(search) != T_STR) return mkval(T_BOOL, 0); jsoff_t str_len, str_off = vstr(js, str, &str_len); jsoff_t search_len, search_off = vstr(js, search, &search_len); const char *str_ptr = (char *) &js->mem[str_off]; const char *search_ptr = (char *) &js->mem[search_off]; if (search_len > str_len) return mkval(T_BOOL, 0); if (search_len == 0) return mkval(T_BOOL, 1); return mkval(T_BOOL, memcmp(str_ptr, search_ptr, search_len) == 0 ? 1 : 0); } static jsval_t builtin_string_endsWith(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "endsWith called on non-string"); if (nargs == 0) return mkval(T_BOOL, 0); jsval_t search = args[0]; if (vtype(search) != T_STR) return mkval(T_BOOL, 0); jsoff_t str_len, str_off = vstr(js, str, &str_len); jsoff_t search_len, search_off = vstr(js, search, &search_len); const char *str_ptr = (char *) &js->mem[str_off]; const char *search_ptr = (char *) &js->mem[search_off]; if (search_len > str_len) return mkval(T_BOOL, 0); if (search_len == 0) return mkval(T_BOOL, 1); return mkval(T_BOOL, memcmp(str_ptr + str_len - search_len, search_ptr, search_len) == 0 ? 1 : 0); } static jsval_t builtin_string_replace(struct js *js, jsval_t *args, int nargs) { jsval_t this_unwrapped = unwrap_primitive(js, js->this_val); jsval_t str = js_tostring_val(js, this_unwrapped); if (is_err(str)) return str; if (nargs < 2) return str; jsval_t search = args[0]; jsval_t replacement = args[1]; jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; bool is_regex = false; bool global_flag = false; bool is_func_replacement = (vtype(replacement) == T_FUNC); char pattern_buf[256]; jsoff_t pattern_len = 0; if (vtype(search) == T_OBJ) { jsoff_t pattern_off = lkp(js, search, "source", 6); if (pattern_off == 0) goto not_regex; jsval_t pattern_val = resolveprop(js, mkval(T_PROP, pattern_off)); if (vtype(pattern_val) != T_STR) goto not_regex; is_regex = true; jsoff_t plen, poff = vstr(js, pattern_val, &plen); pattern_len = plen < sizeof(pattern_buf) - 1 ? plen : sizeof(pattern_buf) - 1; memcpy(pattern_buf, &js->mem[poff], pattern_len); pattern_buf[pattern_len] = '\0'; jsoff_t flags_off = lkp(js, search, "flags", 5); if (flags_off == 0) goto not_regex; jsval_t flags_val = resolveprop(js, mkval(T_PROP, flags_off)); if (vtype(flags_val) != T_STR) goto not_regex; jsoff_t flen, foff = vstr(js, flags_val, &flen); const char *flags_str = (char *) &js->mem[foff]; for (jsoff_t i = 0; i < flen; i++) { if (flags_str[i] == 'g') global_flag = true; } } not_regex: jsoff_t repl_len = 0; const char *repl_ptr = NULL; if (!is_func_replacement) { if (vtype(replacement) != T_STR) return str; jsoff_t repl_off; repl_off = vstr(js, replacement, &repl_len); repl_ptr = (char *) &js->mem[repl_off]; } char result[4096]; jsoff_t result_len = 0; if (is_regex) { char pcre2_pattern[512]; size_t pcre2_len = js_to_pcre2_pattern(pattern_buf, pattern_len, pcre2_pattern, sizeof(pcre2_pattern)); uint32_t options = PCRE2_UTF | PCRE2_UCP | PCRE2_MATCH_UNSET_BACKREF; int errcode; PCRE2_SIZE erroffset; pcre2_code *re = pcre2_compile((PCRE2_SPTR)pcre2_pattern, pcre2_len, options, &errcode, &erroffset, NULL); if (re == NULL) return js_mkerr(js, "invalid regex pattern"); pcre2_match_data *match_data = pcre2_match_data_create_from_pattern(re, NULL); uint32_t capture_count; pcre2_pattern_info(re, PCRE2_INFO_CAPTURECOUNT, &capture_count); PCRE2_SIZE pos = 0; bool replaced = false; while (pos <= str_len) { int rc = pcre2_match(re, (PCRE2_SPTR)str_ptr, str_len, pos, 0, match_data, NULL); if (rc < 0) break; PCRE2_SIZE *ovector = pcre2_get_ovector_pointer(match_data); PCRE2_SIZE match_start = ovector[0]; PCRE2_SIZE match_end = ovector[1]; PCRE2_SIZE before_len = match_start - pos; if (result_len + before_len < sizeof(result)) { memcpy(result + result_len, str_ptr + pos, before_len); result_len += (jsoff_t)before_len; } if (is_func_replacement) { int nargs_cb = 1 + capture_count + 2; jsval_t *cb_args = (jsval_t *)ANT_GC_MALLOC(nargs_cb * sizeof(jsval_t)); if (!cb_args) { pcre2_match_data_free(match_data); pcre2_code_free(re); return js_mkerr(js, "oom"); } cb_args[0] = js_mkstr(js, str_ptr + match_start, match_end - match_start); for (uint32_t i = 1; i <= capture_count; i++) { PCRE2_SIZE cap_start = ovector[2*i]; PCRE2_SIZE cap_end = ovector[2*i+1]; if (cap_start == PCRE2_UNSET) { cb_args[i] = js_mkundef(); } else { cb_args[i] = js_mkstr(js, str_ptr + cap_start, cap_end - cap_start); } } cb_args[1 + capture_count] = tov((double)match_start); cb_args[2 + capture_count] = str; jsval_t cb_result = js_call(js, replacement, cb_args, nargs_cb); ANT_GC_FREE(cb_args); if (vtype(cb_result) == T_ERR) { pcre2_match_data_free(match_data); pcre2_code_free(re); return cb_result; } if (vtype(cb_result) == T_STR) { jsoff_t cb_len, cb_off = vstr(js, cb_result, &cb_len); if (result_len + cb_len < sizeof(result)) { memcpy(result + result_len, &js->mem[cb_off], cb_len); result_len += cb_len; } } else { char numbuf[32]; size_t n = tostr(js, cb_result, numbuf, sizeof(numbuf)); if (result_len + n < sizeof(result)) { memcpy(result + result_len, numbuf, n); result_len += (jsoff_t)n; } } } else { for (jsoff_t ri = 0; ri < repl_len && result_len < sizeof(result); ) { if (repl_ptr[ri] == '$' && ri + 1 < repl_len) { char next = repl_ptr[ri + 1]; if (next == '$') { result[result_len++] = '$'; ri += 2; } else if (next == '&') { PCRE2_SIZE mlen = match_end - match_start; if (result_len + mlen < sizeof(result)) { memcpy(result + result_len, str_ptr + match_start, mlen); result_len += (jsoff_t)mlen; } ri += 2; } else if (next == '`') { if (result_len + match_start < sizeof(result)) { memcpy(result + result_len, str_ptr, match_start); result_len += (jsoff_t)match_start; } ri += 2; } else if (next == '\'') { PCRE2_SIZE after_len = str_len - match_end; if (result_len + after_len < sizeof(result)) { memcpy(result + result_len, str_ptr + match_end, after_len); result_len += (jsoff_t)after_len; } ri += 2; } else if (next >= '0' && next <= '9') { int group_num = next - '0'; ri += 2; if (ri < repl_len && repl_ptr[ri] >= '0' && repl_ptr[ri] <= '9') { int second_digit = repl_ptr[ri] - '0'; int two_digit = group_num * 10 + second_digit; if (two_digit <= (int)capture_count) { group_num = two_digit; ri++; } } if (group_num > 0 && group_num <= (int)capture_count) { PCRE2_SIZE cap_start = ovector[2*group_num]; PCRE2_SIZE cap_end = ovector[2*group_num+1]; if (cap_start != PCRE2_UNSET) { PCRE2_SIZE cap_len = cap_end - cap_start; if (result_len + cap_len < sizeof(result)) { memcpy(result + result_len, str_ptr + cap_start, cap_len); result_len += (jsoff_t)cap_len; } } } else { result[result_len++] = '$'; if (result_len < sizeof(result)) result[result_len++] = next; } } else { result[result_len++] = repl_ptr[ri++]; } } else { result[result_len++] = repl_ptr[ri++]; } } } if (match_start == match_end) { if (pos < str_len && result_len < sizeof(result)) { result[result_len++] = str_ptr[pos]; } pos = match_end + 1; } else { pos = match_end; } replaced = true; if (!global_flag) break; } if (pos < str_len && result_len + (str_len - pos) < sizeof(result)) { memcpy(result + result_len, str_ptr + pos, str_len - pos); result_len += (jsoff_t)(str_len - pos); } pcre2_match_data_free(match_data); pcre2_code_free(re); return replaced ? js_mkstr(js, result, result_len) : str; } else { if (vtype(search) != T_STR) return str; jsoff_t search_len, search_off = vstr(js, search, &search_len); const char *search_ptr = (char *) &js->mem[search_off]; if (search_len > str_len) return str; for (jsoff_t i = 0; i <= str_len - search_len; i++) { if (memcmp(str_ptr + i, search_ptr, search_len) == 0) { if (result_len + i < sizeof(result)) { memcpy(result + result_len, str_ptr, i); result_len += i; } if (is_func_replacement) { jsval_t match_str = js_mkstr(js, search_ptr, search_len); jsval_t cb_args[1] = { match_str }; jsval_t cb_result = js_call(js, replacement, cb_args, 1); if (vtype(cb_result) == T_ERR) return cb_result; if (vtype(cb_result) == T_STR) { jsoff_t cb_len, cb_off = vstr(js, cb_result, &cb_len); if (result_len + cb_len < sizeof(result)) { memcpy(result + result_len, &js->mem[cb_off], cb_len); result_len += cb_len; } } else { char numbuf[32]; size_t n = tostr(js, cb_result, numbuf, sizeof(numbuf)); if (result_len + n < sizeof(result)) { memcpy(result + result_len, numbuf, n); result_len += (jsoff_t)n; } } } else { if (result_len + repl_len < sizeof(result)) { memcpy(result + result_len, repl_ptr, repl_len); result_len += repl_len; } } jsoff_t after_start = i + search_len; jsoff_t after_len = str_len - after_start; if (after_len > 0 && result_len + after_len < sizeof(result)) { memcpy(result + result_len, str_ptr + after_start, after_len); result_len += after_len; } return js_mkstr(js, result, result_len); } } return str; } } static jsval_t builtin_string_replaceAll(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "replaceAll called on non-string"); if (nargs < 2) return str; jsval_t search = args[0]; jsval_t replacement = args[1]; if (vtype(search) != T_STR) return js_mkerr(js, "replaceAll requires string search pattern"); if (vtype(replacement) != T_STR) return js_mkerr(js, "replaceAll requires string replacement"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsoff_t search_len, search_off = vstr(js, search, &search_len); const char *search_ptr = (char *) &js->mem[search_off]; jsoff_t repl_len, repl_off = vstr(js, replacement, &repl_len); const char *repl_ptr = (char *) &js->mem[repl_off]; if (search_len == 0) { size_t total_len = str_len + (str_len + 1) * repl_len; char *result = (char *)ANT_GC_MALLOC(total_len + 1); if (!result) return js_mkerr(js, "oom"); size_t pos = 0; memcpy(result + pos, repl_ptr, repl_len); pos += repl_len; for (jsoff_t i = 0; i < str_len; i++) { result[pos++] = str_ptr[i]; memcpy(result + pos, repl_ptr, repl_len); pos += repl_len; } jsval_t ret = js_mkstr(js, result, pos); ANT_GC_FREE(result); return ret; } jsoff_t count = 0; for (jsoff_t i = 0; i <= str_len - search_len; i++) { if (memcmp(str_ptr + i, search_ptr, search_len) == 0) { count++; i += search_len - 1; } } if (count == 0) return str; size_t result_total = str_len - (count * search_len) + (count * repl_len); char *result = (char *)ANT_GC_MALLOC(result_total + 1); if (!result) return js_mkerr(js, "oom"); size_t result_pos = 0; jsoff_t str_pos = 0; while (str_pos <= str_len - search_len) { if (memcmp(str_ptr + str_pos, search_ptr, search_len) == 0) { memcpy(result + result_pos, repl_ptr, repl_len); result_pos += repl_len; str_pos += search_len; } else { result[result_pos++] = str_ptr[str_pos++]; } } while (str_pos < str_len) { result[result_pos++] = str_ptr[str_pos++]; } jsval_t ret = js_mkstr(js, result, result_pos); ANT_GC_FREE(result); return ret; } static size_t js_to_pcre2_pattern(const char *src, size_t src_len, char *dst, size_t dst_size) { size_t di = 0; for (size_t si = 0; si < src_len && di < dst_size - 1; si++) { if (src[si] == '\\' && si + 1 < src_len) { char next = src[si + 1]; if (next == 'u' && si + 5 < src_len) { bool valid = true; for (int i = 0; i < 4; i++) { char c = src[si + 2 + i]; if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))) { valid = false; break; } } if (valid && di + 8 < dst_size) { dst[di++] = '\\'; dst[di++] = 'x'; dst[di++] = '{'; dst[di++] = src[si + 2]; dst[di++] = src[si + 3]; dst[di++] = src[si + 4]; dst[di++] = src[si + 5]; dst[di++] = '}'; si += 5; continue; } } if (next == '0' && (si + 2 >= src_len || src[si + 2] < '0' || src[si + 2] > '9')) { if (di + 5 < dst_size) { dst[di++] = '\\'; dst[di++] = 'x'; dst[di++] = '{'; dst[di++] = '0'; dst[di++] = '}'; si += 1; continue; } } } dst[di++] = src[si]; } dst[di] = '\0'; return di; } static jsval_t do_regex_match_pcre2( struct js *js, const char *pattern_ptr, jsoff_t pattern_len, const char *str_ptr, jsoff_t str_len, bool global_flag, bool ignore_case, bool multiline ) { char pcre2_pattern[512]; size_t pcre2_len = js_to_pcre2_pattern(pattern_ptr, pattern_len, pcre2_pattern, sizeof(pcre2_pattern)); uint32_t options = PCRE2_UTF | PCRE2_UCP | PCRE2_MATCH_UNSET_BACKREF; if (ignore_case) options |= PCRE2_CASELESS; if (multiline) options |= PCRE2_MULTILINE; int errcode; PCRE2_SIZE erroffset; pcre2_code *re = pcre2_compile((PCRE2_SPTR)pcre2_pattern, pcre2_len, options, &errcode, &erroffset, NULL); if (re == NULL) return js_mknull(); pcre2_match_data *match_data = pcre2_match_data_create_from_pattern(re, NULL); uint32_t capture_count; pcre2_pattern_info(re, PCRE2_INFO_CAPTURECOUNT, &capture_count); jsval_t result_arr = js_mkarr(js); if (is_err(result_arr)) { pcre2_match_data_free(match_data); pcre2_code_free(re); return result_arr; } PCRE2_SIZE pos = 0; int match_count = 0; while (pos <= str_len) { int rc = pcre2_match(re, (PCRE2_SPTR)str_ptr, str_len, pos, 0, match_data, NULL); if (rc < 0) break; PCRE2_SIZE *ovector = pcre2_get_ovector_pointer(match_data); PCRE2_SIZE match_start = ovector[0]; PCRE2_SIZE match_end = ovector[1]; if (global_flag) { jsval_t match_str = js_mkstr(js, str_ptr + match_start, match_end - match_start); if (is_err(match_str)) { pcre2_match_data_free(match_data); pcre2_code_free(re); return match_str; } js_arr_push(js, result_arr, match_str); } else { for (uint32_t i = 0; i <= capture_count; i++) { PCRE2_SIZE start = ovector[2*i]; PCRE2_SIZE end = ovector[2*i+1]; if (start == PCRE2_UNSET) { js_arr_push(js, result_arr, js_mkundef()); } else { jsval_t match_str = js_mkstr(js, str_ptr + start, end - start); if (is_err(match_str)) { pcre2_match_data_free(match_data); pcre2_code_free(re); return match_str; } js_arr_push(js, result_arr, match_str); } } setprop(js, result_arr, js_mkstr(js, "index", 5), tov((double)match_start)); } match_count++; if (!global_flag) break; if (match_start == match_end) { pos = match_end + 1; } else { pos = match_end; } } pcre2_match_data_free(match_data); pcre2_code_free(re); if (match_count == 0) return js_mknull(); return result_arr; } static jsval_t builtin_string_match(struct js *js, jsval_t *args, int nargs) { jsval_t this_unwrapped = unwrap_primitive(js, js->this_val); jsval_t str = js_tostring_val(js, this_unwrapped); if (is_err(str)) return str; if (nargs < 1) return js_mknull(); jsval_t pattern = args[0]; const char *pattern_ptr = NULL; jsoff_t pattern_len = 0; bool global_flag = false; bool ignore_case = false; bool multiline = false; if (vtype(pattern) == T_OBJ) { jsoff_t source_off = lkp(js, pattern, "source", 6); if (source_off == 0) return js_mknull(); jsval_t source_val = resolveprop(js, mkval(T_PROP, source_off)); if (vtype(source_val) != T_STR) return js_mknull(); jsoff_t poff; poff = vstr(js, source_val, &pattern_len); pattern_ptr = (char *) &js->mem[poff]; jsoff_t flags_off = lkp(js, pattern, "flags", 5); if (flags_off != 0) { jsval_t flags_val = resolveprop(js, mkval(T_PROP, flags_off)); if (vtype(flags_val) == T_STR) { jsoff_t flen, foff = vstr(js, flags_val, &flen); const char *flags_str = (char *) &js->mem[foff]; for (jsoff_t i = 0; i < flen; i++) { if (flags_str[i] == 'g') global_flag = true; if (flags_str[i] == 'i') ignore_case = true; if (flags_str[i] == 'm') multiline = true; } } } } else if (vtype(pattern) == T_STR) { jsoff_t poff; poff = vstr(js, pattern, &pattern_len); pattern_ptr = (char *) &js->mem[poff]; } else { return js_mknull(); } jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsval_t result = do_regex_match_pcre2(js, pattern_ptr, pattern_len, str_ptr, str_len, global_flag, ignore_case, multiline); if (!global_flag && vtype(result) == T_ARR) { setprop(js, result, js_mkstr(js, "input", 5), str); } return result; } static jsval_t builtin_string_template(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "template called on non-string"); if (nargs < 1 || vtype(args[0]) != T_OBJ) return str; jsval_t data = args[0]; jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; char result[2048]; jsoff_t result_len = 0; jsoff_t i = 0; while (i < str_len && result_len < sizeof(result) - 1) { if (i < str_len - 3 && str_ptr[i] == '{' && str_ptr[i + 1] == '{') { jsoff_t start = i + 2; jsoff_t end = start; while (end < str_len - 1 && !(str_ptr[end] == '}' && str_ptr[end + 1] == '}')) { end++; } if (end < str_len - 1 && str_ptr[end] == '}' && str_ptr[end + 1] == '}') { jsoff_t key_len = end - start; jsoff_t prop_off = lkp(js, data, str_ptr + start, key_len); if (prop_off != 0) { jsval_t value = resolveprop(js, mkval(T_PROP, prop_off)); if (vtype(value) == T_STR) { jsoff_t val_len, val_off = vstr(js, value, &val_len); if (result_len + val_len < sizeof(result)) { memcpy(result + result_len, &js->mem[val_off], val_len); result_len += val_len; } } else if (vtype(value) == T_NUM) { char numstr[32]; snprintf(numstr, sizeof(numstr), "%g", tod(value)); size_t num_len = strlen(numstr); if (result_len + num_len < sizeof(result)) { memcpy(result + result_len, numstr, num_len); result_len += num_len; } } else if (vtype(value) == T_BOOL) { const char *boolstr = vdata(value) ? "true" : "false"; size_t bool_len = strlen(boolstr); if (result_len + bool_len < sizeof(result)) { memcpy(result + result_len, boolstr, bool_len); result_len += bool_len; } } } else { } i = end + 2; continue; } } result[result_len++] = str_ptr[i++]; } return js_mkstr(js, result, result_len); } static jsval_t builtin_string_charCodeAt(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "charCodeAt called on non-string"); if (nargs < 1 || vtype(args[0]) != T_NUM) return tov(-NAN); double idx_d = tod(args[0]); if (idx_d < 0 || idx_d != (double)(long)idx_d) return tov(-NAN); jsoff_t idx = (jsoff_t) idx_d; jsoff_t str_len = offtolen(loadoff(js, (jsoff_t) vdata(str))); if (idx >= str_len) return tov(-NAN); jsoff_t str_off = (jsoff_t) vdata(str) + sizeof(jsoff_t); unsigned char ch = (unsigned char) js->mem[str_off + idx]; return tov((double) ch); } static jsval_t builtin_string_toLowerCase(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "toLowerCase called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsval_t result = js_mkstr(js, NULL, str_len); if (is_err(result)) return result; jsoff_t result_len, result_off = vstr(js, result, &result_len); char *result_ptr = (char *) &js->mem[result_off]; for (jsoff_t i = 0; i < str_len; i++) { char ch = str_ptr[i]; result_ptr[i] = (ch >= 'A' && ch <= 'Z') ? ch + 32 : ch; } return result; } static jsval_t builtin_string_toUpperCase(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "toUpperCase called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsval_t result = js_mkstr(js, NULL, str_len); if (is_err(result)) return result; jsoff_t result_len, result_off = vstr(js, result, &result_len); char *result_ptr = (char *) &js->mem[result_off]; for (jsoff_t i = 0; i < str_len; i++) { char ch = str_ptr[i]; result_ptr[i] = (ch >= 'a' && ch <= 'z') ? ch - 32 : ch; } return result; } static jsval_t builtin_string_trim(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "trim called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsoff_t start = 0, end = str_len; while (start < end && is_space(str_ptr[start])) start++; while (end > start && is_space(str_ptr[end - 1])) end--; return js_mkstr(js, str_ptr + start, end - start); } static jsval_t builtin_string_trimStart(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "trimStart called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsoff_t start = 0; while (start < str_len && is_space(str_ptr[start])) start++; return js_mkstr(js, str_ptr + start, str_len - start); } static jsval_t builtin_string_trimEnd(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "trimEnd called on non-string"); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; jsoff_t end = str_len; while (end > 0 && is_space(str_ptr[end - 1])) end--; return js_mkstr(js, str_ptr, end); } static jsval_t builtin_string_repeat(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "repeat called on non-string"); if (nargs < 1 || vtype(args[0]) != T_NUM) return js_mkerr(js, "repeat count required"); double count_d = tod(args[0]); if (count_d < 0 || count_d != (double)(long)count_d) return js_mkerr(js, "invalid repeat count"); jsoff_t count = (jsoff_t) count_d; jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; if (count == 0 || str_len == 0) return js_mkstr(js, "", 0); jsval_t result = js_mkstr(js, NULL, str_len * count); if (is_err(result)) return result; jsoff_t result_len, result_off = vstr(js, result, &result_len); char *result_ptr = (char *) &js->mem[result_off]; for (jsoff_t i = 0; i < count; i++) { memcpy(result_ptr + i * str_len, str_ptr, str_len); } return result; } static jsval_t builtin_string_padStart(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "padStart called on non-string"); if (nargs < 1 || vtype(args[0]) != T_NUM) return str; jsoff_t target_len = (jsoff_t) tod(args[0]); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; if (target_len <= str_len) return str; const char *pad_str = " "; jsoff_t pad_len = 1; if (nargs >= 2 && vtype(args[1]) == T_STR) { pad_len = vstr(js, args[1], &pad_len); pad_str = (char *) &js->mem[pad_len]; pad_len = offtolen(loadoff(js, (jsoff_t) vdata(args[1]))); } if (pad_len == 0) return str; jsoff_t fill_len = target_len - str_len; jsval_t result = js_mkstr(js, NULL, target_len); if (is_err(result)) return result; jsoff_t result_len, result_off = vstr(js, result, &result_len); char *result_ptr = (char *) &js->mem[result_off]; jsoff_t pos = 0; while (pos < fill_len) { jsoff_t copy_len = (fill_len - pos < pad_len) ? fill_len - pos : pad_len; memcpy(result_ptr + pos, pad_str, copy_len); pos += copy_len; } memcpy(result_ptr + fill_len, str_ptr, str_len); return result; } static jsval_t builtin_string_padEnd(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "padEnd called on non-string"); if (nargs < 1 || vtype(args[0]) != T_NUM) return str; jsoff_t target_len = (jsoff_t) tod(args[0]); jsoff_t str_len, str_off = vstr(js, str, &str_len); const char *str_ptr = (char *) &js->mem[str_off]; if (target_len <= str_len) return str; const char *pad_str = " "; jsoff_t pad_len = 1; if (nargs >= 2 && vtype(args[1]) == T_STR) { pad_len = vstr(js, args[1], &pad_len); pad_str = (char *) &js->mem[pad_len]; pad_len = offtolen(loadoff(js, (jsoff_t) vdata(args[1]))); } if (pad_len == 0) return str; jsval_t result = js_mkstr(js, NULL, target_len); if (is_err(result)) return result; jsoff_t result_len, result_off = vstr(js, result, &result_len); char *result_ptr = (char *) &js->mem[result_off]; memcpy(result_ptr, str_ptr, str_len); jsoff_t pos = str_len; while (pos < target_len) { jsoff_t copy_len = (target_len - pos < pad_len) ? target_len - pos : pad_len; memcpy(result_ptr + pos, pad_str, copy_len); pos += copy_len; } return result; } static jsval_t builtin_string_charAt(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "charAt called on non-string"); if (nargs < 1 || vtype(args[0]) != T_NUM) return js_mkstr(js, "", 0); double idx_d = tod(args[0]); if (isnan(idx_d)) idx_d = 0; else if (idx_d < 0) idx_d = -floor(-idx_d); else idx_d = floor(idx_d); if (idx_d < 0) return js_mkstr(js, "", 0); jsoff_t idx = (jsoff_t) idx_d; jsoff_t str_len = offtolen(loadoff(js, (jsoff_t) vdata(str))); if (idx >= str_len) return js_mkstr(js, "", 0); jsoff_t str_off = (jsoff_t) vdata(str) + sizeof(jsoff_t); char ch = js->mem[str_off + idx]; return js_mkstr(js, &ch, 1); } static jsval_t builtin_string_at(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "at called on non-string"); if (nargs < 1 || vtype(args[0]) != T_NUM) return js_mkundef(); jsoff_t str_len = offtolen(loadoff(js, (jsoff_t) vdata(str))); double idx_d = tod(args[0]); long idx = (long) idx_d; if (idx < 0) idx += (long) str_len; if (idx < 0 || idx >= (long) str_len) return js_mkundef(); jsoff_t str_off = (jsoff_t) vdata(str) + sizeof(jsoff_t); char ch = js->mem[str_off + idx]; return js_mkstr(js, &ch, 1); } static jsval_t builtin_string_localeCompare(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "localeCompare called on non-string"); if (nargs < 1) return tov(0); jsval_t that = args[0]; if (vtype(that) != T_STR) { char buf[64]; size_t n = tostr(js, that, buf, sizeof(buf)); that = js_mkstr(js, buf, n); } jsoff_t str_len, str_off = vstr(js, str, &str_len); jsoff_t that_len, that_off = vstr(js, that, &that_len); const char *str_ptr = (char *)&js->mem[str_off]; const char *that_ptr = (char *)&js->mem[that_off]; int result = strcoll(str_ptr, that_ptr); if (result < 0) return tov(-1); if (result > 0) return tov(1); return tov(0); } static jsval_t builtin_string_lastIndexOf(struct js *js, jsval_t *args, int nargs) { jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "lastIndexOf called on non-string"); if (nargs == 0) return tov(-1); jsval_t search = args[0]; if (vtype(search) != T_STR) return tov(-1); jsoff_t str_len, str_off = vstr(js, str, &str_len); jsoff_t search_len, search_off = vstr(js, search, &search_len); jsoff_t max_start = str_len; if (nargs >= 2 && vtype(args[1]) == T_NUM) { double pos = tod(args[1]); if (isnan(pos)) pos = (double) str_len; if (pos < 0) pos = 0; if (pos > str_len) pos = str_len; max_start = (jsoff_t) pos; } if (search_len == 0) return tov((double) (max_start > str_len ? str_len : max_start)); if (search_len > str_len) return tov(-1); const char *str_ptr = (char *) &js->mem[str_off]; const char *search_ptr = (char *) &js->mem[search_off]; jsoff_t start = (max_start + search_len > str_len) ? str_len - search_len : max_start; for (jsoff_t i = start + 1; i > 0; i--) { if (memcmp(str_ptr + i - 1, search_ptr, search_len) == 0) return tov((double)(i - 1)); } return tov(-1); } static jsval_t builtin_string_concat(struct js *js, jsval_t *args, int nargs) { jsval_t this_unwrapped = unwrap_primitive(js, js->this_val); jsval_t str = js_tostring_val(js, this_unwrapped); if (is_err(str)) return str; jsoff_t total_len; jsoff_t base_off = vstr(js, str, &total_len); jsval_t *str_args = NULL; if (nargs > 0) { str_args = (jsval_t *)ANT_GC_MALLOC(nargs * sizeof(jsval_t)); if (!str_args) return js_mkerr(js, "oom"); for (int i = 0; i < nargs; i++) { str_args[i] = js_tostring_val(js, args[i]); if (is_err(str_args[i])) return str_args[i]; jsoff_t arg_len; vstr(js, str_args[i], &arg_len); total_len += arg_len; } } char *result = (char *)ANT_GC_MALLOC(total_len + 1); if (!result) return js_mkerr(js, "oom"); jsoff_t base_len; base_off = vstr(js, str, &base_len); memcpy(result, &js->mem[base_off], base_len); jsoff_t pos = base_len; for (int i = 0; i < nargs; i++) { jsoff_t arg_len, arg_off = vstr(js, str_args[i], &arg_len); memcpy(result + pos, &js->mem[arg_off], arg_len); pos += arg_len; } result[pos] = '\0'; jsval_t ret = js_mkstr(js, result, pos); ANT_GC_FREE(result); return ret; } static jsval_t builtin_string_fromCharCode(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkstr(js, "", 0); char *buf = (char *)ANT_GC_MALLOC(nargs + 1); if (!buf) return js_mkerr(js, "oom"); for (int i = 0; i < nargs; i++) { if (vtype(args[i]) != T_NUM) { buf[i] = 0; continue; } int code = (int) tod(args[i]); buf[i] = (char)(code & 0xFF); } buf[nargs] = '\0'; jsval_t ret = js_mkstr(js, buf, nargs); ANT_GC_FREE(buf); return ret; } static jsval_t builtin_string_fromCodePoint(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return js_mkstr(js, "", 0); char *buf = (char *)ANT_GC_MALLOC(nargs * 4 + 1); if (!buf) return js_mkerr(js, "oom"); size_t len = 0; for (int i = 0; i < nargs; i++) { if (vtype(args[i]) != T_NUM) continue; double d = tod(args[i]); if (d < 0 || d > 0x10FFFF || d != floor(d)) { ANT_GC_FREE(buf); return js_mkerr_typed(js, JS_ERR_RANGE, "Invalid code point"); } uint32_t cp = (uint32_t)d; if (cp < 0x80) { buf[len++] = (char)cp; } else if (cp < 0x800) { buf[len++] = (char)(0xC0 | (cp >> 6)); buf[len++] = (char)(0x80 | (cp & 0x3F)); } else if (cp < 0x10000) { buf[len++] = (char)(0xE0 | (cp >> 12)); buf[len++] = (char)(0x80 | ((cp >> 6) & 0x3F)); buf[len++] = (char)(0x80 | (cp & 0x3F)); } else { buf[len++] = (char)(0xF0 | (cp >> 18)); buf[len++] = (char)(0x80 | ((cp >> 12) & 0x3F)); buf[len++] = (char)(0x80 | ((cp >> 6) & 0x3F)); buf[len++] = (char)(0x80 | (cp & 0x3F)); } } buf[len] = '\0'; jsval_t ret = js_mkstr(js, buf, len); ANT_GC_FREE(buf); return ret; } static jsval_t builtin_number_toString(struct js *js, jsval_t *args, int nargs) { jsval_t num = unwrap_primitive(js, js->this_val); if (vtype(num) != T_NUM) return js_mkerr(js, "toString called on non-number"); int radix = 10; if (nargs >= 1 && vtype(args[0]) == T_NUM) { radix = (int)tod(args[0]); if (radix < 2 || radix > 36) { return js_mkerr(js, "radix must be between 2 and 36"); } } if (radix == 10) { char buf[64]; size_t len = strnum(num, buf, sizeof(buf)); return js_mkstr(js, buf, len); } double val = tod(num); if (isnan(val)) return js_mkstr(js, "NaN", 3); if (isinf(val)) return val > 0 ? js_mkstr(js, "Infinity", 8) : js_mkstr(js, "-Infinity", 9); char buf[128]; char *p = buf + sizeof(buf) - 1; *p = '\0'; bool negative = val < 0; if (negative) val = -val; long long int_part = (long long)val; double frac_part = val - (double)int_part; if (int_part == 0) { *--p = '0'; } else { while (int_part > 0 && p > buf) { int digit = int_part % radix; *--p = digit < 10 ? '0' + digit : 'a' + (digit - 10); int_part /= radix; } } if (negative && p > buf) { *--p = '-'; } size_t int_len = strlen(p); if (frac_part > 0.0000001) { char frac_buf[64]; int frac_pos = 0; frac_buf[frac_pos++] = '.'; for (int i = 0; i < 16 && frac_part > 0.0000001 && frac_pos < 63; i++) { frac_part *= radix; int digit = (int)frac_part; frac_buf[frac_pos++] = digit < 10 ? '0' + digit : 'a' + (digit - 10); frac_part -= digit; } frac_buf[frac_pos] = '\0'; char result[192]; snprintf(result, sizeof(result), "%s%s", p, frac_buf); return js_mkstr(js, result, strlen(result)); } return js_mkstr(js, p, int_len); } static jsval_t builtin_number_toFixed(struct js *js, jsval_t *args, int nargs) { jsval_t num = unwrap_primitive(js, js->this_val); if (vtype(num) != T_NUM) return js_mkerr(js, "toFixed called on non-number"); double d = tod(num); if (isnan(d)) return js_mkstr(js, "NaN", 3); if (isinf(d)) return d > 0 ? js_mkstr(js, "Infinity", 8) : js_mkstr(js, "-Infinity", 9); int digits = 0; if (nargs >= 1 && vtype(args[0]) != T_UNDEF) { digits = (int) tod(args[0]); if (digits < 0 || digits > 100) { return js_mkerr_typed(js, JS_ERR_RANGE, "toFixed() digits argument must be between 0 and 100"); } } bool negative = d < 0; if (negative) d = -d; if (d >= 1e21) { char buf[64]; snprintf(buf, sizeof(buf), "%.0f", negative ? -d : d); return js_mkstr(js, buf, strlen(buf)); } double scale = pow(10, digits); double scaled = d * scale; double rounded = floor(scaled + 0.5); char digit_buf[128]; snprintf(digit_buf, sizeof(digit_buf), "%.0f", rounded); int digit_len = strlen(digit_buf); while (digit_len < digits + 1) { memmove(digit_buf + 1, digit_buf, digit_len + 1); digit_buf[0] = '0'; digit_len++; } char buf[128]; int pos = 0; if (negative && rounded != 0) buf[pos++] = '-'; int int_digits = digit_len - digits; if (int_digits <= 0) int_digits = 1; for (int i = 0; i < int_digits; i++) { buf[pos++] = digit_buf[i]; } if (digits > 0) { buf[pos++] = '.'; for (int i = int_digits; i < digit_len; i++) { buf[pos++] = digit_buf[i]; } } buf[pos] = '\0'; return js_mkstr(js, buf, pos); } static jsval_t builtin_number_toPrecision(struct js *js, jsval_t *args, int nargs) { jsval_t num = unwrap_primitive(js, js->this_val); if (vtype(num) != T_NUM) return js_mkerr(js, "toPrecision called on non-number"); double d = tod(num); if (isnan(d)) return js_mkstr(js, "NaN", 3); if (isinf(d)) return d > 0 ? js_mkstr(js, "Infinity", 8) : js_mkstr(js, "-Infinity", 9); if (nargs < 1 || vtype(args[0]) == T_UNDEF) { char buf[64]; size_t len = strnum(num, buf, sizeof(buf)); return js_mkstr(js, buf, len); } int precision = (int) tod(args[0]); if (precision < 1 || precision > 100) { return js_mkerr_typed(js, JS_ERR_RANGE, "toPrecision() argument must be between 1 and 100"); } bool negative = d < 0; if (negative) d = -d; if (d == 0) { char buf[128]; int pos = 0; if (negative) buf[pos++] = '-'; buf[pos++] = '0'; if (precision > 1) { buf[pos++] = '.'; for (int i = 1; i < precision; i++) buf[pos++] = '0'; } buf[pos] = '\0'; return js_mkstr(js, buf, pos); } int exp = (int) floor(log10(d)); bool use_exp = (exp < -(precision - 1) - 1) || (exp >= precision); if (use_exp) { double mantissa = d / pow(10, exp); double scale = pow(10, precision - 1); double rounded = floor(mantissa * scale + 0.5); if (rounded >= scale * 10) { rounded /= 10; exp++; } char digit_buf[32]; snprintf(digit_buf, sizeof(digit_buf), "%.0f", rounded); int digit_len = strlen(digit_buf); char buf[128]; int pos = 0; if (negative) buf[pos++] = '-'; buf[pos++] = digit_buf[0]; if (precision > 1) { buf[pos++] = '.'; for (int i = 1; i < precision; i++) { buf[pos++] = (i < digit_len) ? digit_buf[i] : '0'; } } buf[pos++] = 'e'; buf[pos++] = (exp >= 0) ? '+' : '-'; if (exp < 0) exp = -exp; snprintf(buf + pos, sizeof(buf) - pos, "%d", exp); return js_mkstr(js, buf, strlen(buf)); } else { int digits_after_point = precision - exp - 1; if (digits_after_point < 0) digits_after_point = 0; double scale = pow(10, digits_after_point); double rounded = floor(d * scale + 0.5); char digit_buf[64]; snprintf(digit_buf, sizeof(digit_buf), "%.0f", rounded); int digit_len = strlen(digit_buf); while (digit_len < digits_after_point + 1) { memmove(digit_buf + 1, digit_buf, digit_len + 1); digit_buf[0] = '0'; digit_len++; } char buf[128]; int pos = 0; if (negative) buf[pos++] = '-'; int int_digits = digit_len - digits_after_point; for (int i = 0; i < int_digits; i++) { buf[pos++] = digit_buf[i]; } if (digits_after_point > 0) { buf[pos++] = '.'; for (int i = int_digits; i < digit_len; i++) { buf[pos++] = digit_buf[i]; } } buf[pos] = '\0'; return js_mkstr(js, buf, pos); } } static jsval_t builtin_number_toExponential(struct js *js, jsval_t *args, int nargs) { jsval_t num = unwrap_primitive(js, js->this_val); if (vtype(num) != T_NUM) return js_mkerr(js, "toExponential called on non-number"); double d = tod(num); if (isnan(d)) return js_mkstr(js, "NaN", 3); if (isinf(d)) return d > 0 ? js_mkstr(js, "Infinity", 8) : js_mkstr(js, "-Infinity", 9); int digits = -1; if (nargs >= 1 && vtype(args[0]) != T_UNDEF) { digits = (int) tod(args[0]); if (digits < 0 || digits > 100) { return js_mkerr_typed(js, JS_ERR_RANGE, "toExponential() argument must be between 0 and 100"); } } bool negative = d < 0; if (negative) d = -d; int exp = 0; if (d != 0) { exp = (int) floor(log10(d)); double test = d / pow(10, exp); if (test >= 10) { exp++; test /= 10; } if (test < 1) { exp--; test *= 10; } } if (digits < 0) { char temp[32]; snprintf(temp, sizeof(temp), "%.15g", d); int sig = 0; for (int i = 0; temp[i] && temp[i] != 'e' && temp[i] != 'E'; i++) { if (temp[i] == '.') continue; if (temp[i] >= '0' && temp[i] <= '9') if (temp[i] != '0' || sig > 0) sig++; } digits = sig > 0 ? sig - 1 : 0; if (digits > 20) digits = 20; } double mantissa = d / pow(10, exp); double scale = pow(10, digits); double scaled = mantissa * scale; double rounded = floor(scaled + 0.5); if (rounded >= scale * 10) { rounded /= 10; exp++; } char buf[64]; int pos = 0; if (negative) buf[pos++] = '-'; char digit_buf[32]; snprintf(digit_buf, sizeof(digit_buf), "%.0f", rounded); int digit_len = strlen(digit_buf); while (digit_len < digits + 1) { memmove(digit_buf + 1, digit_buf, digit_len + 1); digit_buf[0] = '0'; digit_len++; } buf[pos++] = digit_buf[0]; if (digits > 0) { buf[pos++] = '.'; for (int i = 1; i <= digits; i++) { buf[pos++] = (i < digit_len) ? digit_buf[i] : '0'; } } buf[pos++] = 'e'; buf[pos++] = (exp >= 0) ? '+' : '-'; if (exp < 0) exp = -exp; snprintf(buf + pos, sizeof(buf) - pos, "%d", exp); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_number_valueOf(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t num = unwrap_primitive(js, js->this_val); if (vtype(num) != T_NUM) return js_mkerr(js, "valueOf called on non-number"); return num; } static jsval_t builtin_number_toLocaleString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t num = unwrap_primitive(js, js->this_val); if (vtype(num) != T_NUM) return js_mkerr(js, "toLocaleString called on non-number"); char buf[64]; strnum(num, buf, sizeof(buf)); return js_mkstr(js, buf, strlen(buf)); } static jsval_t builtin_string_valueOf(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t str = to_string_val(js, js->this_val); if (vtype(str) != T_STR) return js_mkerr(js, "valueOf called on non-string"); return str; } static jsval_t builtin_string_toString(struct js *js, jsval_t *args, int nargs) { return builtin_string_valueOf(js, args, nargs); } static jsval_t builtin_boolean_valueOf(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t b = unwrap_primitive(js, js->this_val); if (vtype(b) != T_BOOL) return js_mkerr(js, "valueOf called on non-boolean"); return b; } static jsval_t builtin_boolean_toString(struct js *js, jsval_t *args, int nargs) { (void) args; (void) nargs; jsval_t b = unwrap_primitive(js, js->this_val); if (vtype(b) != T_BOOL) return js_mkerr(js, "toString called on non-boolean"); return vdata(b) ? js_mkstr(js, "true", 4) : js_mkstr(js, "false", 5); } static jsval_t builtin_parseInt(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(-NAN); jsval_t str_val = args[0]; if (vtype(str_val) != T_STR) { const char *str = js_str(js, str_val); str_val = js_mkstr(js, str, strlen(str)); } jsoff_t str_len, str_off = vstr(js, str_val, &str_len); const char *str = (char *) &js->mem[str_off]; int radix = 0; if (nargs >= 2 && vtype(args[1]) == T_NUM) { radix = (int) tod(args[1]); if (radix != 0 && (radix < 2 || radix > 36)) return tov(-NAN); } jsoff_t i = 0; while (i < str_len && is_space(str[i])) i++; if (i >= str_len) return tov(-NAN); int sign = 1; if (str[i] == '-') { sign = -1; i++; } else if (str[i] == '+') { i++; } if ((radix == 0 || radix == 16) && i + 1 < str_len && str[i] == '0' && (str[i + 1] == 'x' || str[i + 1] == 'X')) { radix = 16; i += 2; } if (radix == 0) radix = 10; double result = 0; bool found_digit = false; while (i < str_len) { char ch = str[i]; int digit = -1; if (ch >= '0' && ch <= '9') { digit = ch - '0'; } else if (ch >= 'a' && ch <= 'z') { digit = ch - 'a' + 10; } else if (ch >= 'A' && ch <= 'Z') { digit = ch - 'A' + 10; } if (digit < 0 || digit >= radix) break; result = result * radix + digit; found_digit = true; i++; } if (!found_digit) return tov(-NAN); return tov(sign * result); } static jsval_t builtin_parseFloat(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return tov(-NAN); jsval_t str_val = args[0]; if (vtype(str_val) != T_STR) { const char *str = js_str(js, str_val); str_val = js_mkstr(js, str, strlen(str)); } jsoff_t str_len, str_off = vstr(js, str_val, &str_len); const char *str = (char *) &js->mem[str_off]; jsoff_t i = 0; while (i < str_len && is_space(str[i])) i++; if (i >= str_len) return tov(-NAN); char *end; double result = strtod(&str[i], &end); if (end == &str[i]) return tov(-NAN); return tov(result); } static const char base64_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; static jsval_t builtin_btoa(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "btoa requires 1 argument"); jsval_t str_val = args[0]; if (vtype(str_val) != T_STR) { const char *str = js_str(js, str_val); str_val = js_mkstr(js, str, strlen(str)); } jsoff_t str_len, str_off = vstr(js, str_val, &str_len); const char *str = (char *) &js->mem[str_off]; for (jsoff_t i = 0; i < str_len; i++) { if ((unsigned char)str[i] > 255) { return js_mkerr(js, "btoa: character out of range"); } } size_t out_len = ((str_len + 2) / 3) * 4; char *out = (char *)ANT_GC_MALLOC(out_len + 1); if (!out) return js_mkerr(js, "out of memory"); size_t i = 0, j = 0; while (i < str_len) { size_t remaining = str_len - i; uint32_t a = (unsigned char)str[i++]; uint32_t b = (remaining > 1) ? (unsigned char)str[i++] : 0; uint32_t c = (remaining > 2) ? (unsigned char)str[i++] : 0; uint32_t triple = (a << 16) | (b << 8) | c; out[j++] = base64_chars[(triple >> 18) & 0x3F]; out[j++] = base64_chars[(triple >> 12) & 0x3F]; out[j++] = (remaining > 1) ? base64_chars[(triple >> 6) & 0x3F] : '='; out[j++] = (remaining > 2) ? base64_chars[triple & 0x3F] : '='; } out[j] = '\0'; jsval_t result = js_mkstr(js, out, j); ANT_GC_FREE(out); return result; } static jsval_t builtin_atob(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "atob requires 1 argument"); jsval_t str_val = args[0]; if (vtype(str_val) != T_STR) { const char *str = js_str(js, str_val); str_val = js_mkstr(js, str, strlen(str)); } jsoff_t str_len, str_off = vstr(js, str_val, &str_len); const char *str = (char *) &js->mem[str_off]; if (str_len == 0) return js_mkstr(js, "", 0); if (str_len % 4 != 0) return js_mkerr(js, "atob: invalid base64 string"); size_t out_len = (str_len / 4) * 3; if (str_len > 0 && str[str_len - 1] == '=') out_len--; if (str_len > 1 && str[str_len - 2] == '=') out_len--; char *out = (char *)ANT_GC_MALLOC(out_len + 1); if (!out) return js_mkerr(js, "out of memory"); static const int8_t decode_table[256] = { -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63, 52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14, 15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1, -1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, 41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 }; size_t i = 0, j = 0; while (i < str_len) { int8_t a = decode_table[(unsigned char)str[i++]]; int8_t b = decode_table[(unsigned char)str[i++]]; int8_t c = (str[i] == '=') ? 0 : decode_table[(unsigned char)str[i]]; i++; int8_t d = (str[i] == '=') ? 0 : decode_table[(unsigned char)str[i]]; i++; if (a < 0 || b < 0 || (str[i-2] != '=' && c < 0) || (str[i-1] != '=' && d < 0)) { ANT_GC_FREE(out); return js_mkerr(js, "atob: invalid character in base64 string"); } uint32_t triple = ((uint32_t)a << 18) | ((uint32_t)b << 12) | ((uint32_t)c << 6) | (uint32_t)d; if (j < out_len) out[j++] = (triple >> 16) & 0xFF; if (j < out_len) out[j++] = (triple >> 8) & 0xFF; if (j < out_len) out[j++] = triple & 0xFF; } jsval_t result = js_mkstr(js, out, out_len); ANT_GC_FREE(out); return result; } static jsval_t builtin_resolve_internal(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_reject_internal(struct js *js, jsval_t *args, int nargs); static void resolve_promise(struct js *js, jsval_t p, jsval_t val); static void reject_promise(struct js *js, jsval_t p, jsval_t val); static size_t strpromise(struct js *js, jsval_t value, char *buf, size_t len) { jsval_t prom_obj = mkval(T_OBJ, vdata(value)); jsoff_t state_off = lkp(js, prom_obj, "__state", 7); int state = 0; if (state_off != 0) { jsval_t val = resolveprop(js, mkval(T_PROP, state_off)); if (vtype(val) == T_NUM) state = (int)tod(val); } if (state == 0) { return (size_t)snprintf(buf, len, "Promise { }"); } jsoff_t value_off = lkp(js, prom_obj, "__value", 7); if (value_off == 0) { const char *s = (state == 1) ? "" : ""; return (size_t)snprintf(buf, len, "Promise { %s }", s); } jsval_t prom_val = resolveprop(js, mkval(T_PROP, value_off)); char value_buf[256]; size_t value_len = tostr(js, prom_val, value_buf, sizeof(value_buf)); if (value_len >= sizeof(value_buf)) value_len = sizeof(value_buf) - 1; value_buf[value_len] = '\0'; if (state == 1) { return (size_t)snprintf(buf, len, "Promise { %s }", value_buf); } else { return (size_t)snprintf(buf, len, "Promise { %s }", value_buf); } } static jsval_t mkpromise(struct js *js) { jsval_t obj = mkobj(js, 0); if (is_err(obj)) return obj; setprop(js, obj, js_mkstr(js, "__state", 7), tov(0.0)); setprop(js, obj, js_mkstr(js, "__value", 7), js_mkundef()); setprop(js, obj, js_mkstr(js, "__handlers", 10), mkarr(js)); return mkval(T_PROMISE, vdata(obj)); } static jsval_t builtin_trigger_handler_wrapper(struct js *js, jsval_t *args, int nargs); static void trigger_handlers(struct js *js, jsval_t p) { jsval_t wrapper_obj = mkobj(js, 0); setprop(js, wrapper_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_trigger_handler_wrapper)); setprop(js, wrapper_obj, js_mkstr(js, "promise", 7), p); jsval_t wrapper_fn = mkval(T_FUNC, vdata(wrapper_obj)); queue_microtask(js, wrapper_fn); } static jsval_t builtin_trigger_handler_wrapper(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t p = js_get(js, me, "promise"); if (vtype(p) != T_PROMISE) return js_mkundef(); jsval_t p_obj = mkval(T_OBJ, vdata(p)); jsoff_t state_off = lkp(js, p_obj, "__state", 7); int state = (int)tod(resolveprop(js, mkval(T_PROP, state_off))); jsoff_t val_off = lkp(js, p_obj, "__value", 7); jsval_t val = resolveprop(js, mkval(T_PROP, val_off)); jsoff_t handlers_off = lkp(js, p_obj, "__handlers", 10); jsval_t handlers_arr = resolveprop(js, mkval(T_PROP, handlers_off)); jsoff_t len_off = lkp_interned(js, handlers_arr, INTERN_LENGTH, 6); int len = (int)tod(resolveprop(js, mkval(T_PROP, len_off))); for (int i = 0; i < len; i += 3) { char idx1[16], idx2[16], idx3[16]; snprintf(idx1, sizeof(idx1), "%d", i); snprintf(idx2, sizeof(idx2), "%d", i+1); snprintf(idx3, sizeof(idx3), "%d", i+2); jsval_t onFulfilled = resolveprop(js, js_get(js, handlers_arr, idx1)); jsval_t onRejected = resolveprop(js, js_get(js, handlers_arr, idx2)); jsval_t nextPromise = resolveprop(js, js_get(js, handlers_arr, idx3)); jsval_t handler = (state == 1) ? onFulfilled : onRejected; if (vtype(handler) == T_FUNC || vtype(handler) == T_CFUNC) { jsval_t res; if (vtype(handler) == T_CFUNC) { jsval_t (*fn)(struct js *, jsval_t *, int) = (jsval_t(*)(struct js *, jsval_t *, int)) vdata(handler); res = fn(js, &val, 1); } else { jsval_t args[] = { val }; res = js_call(js, handler, args, 1); } if (is_err(res)) { jsval_t err_str = js_mkstr(js, js->errmsg, strlen(js->errmsg)); reject_promise(js, nextPromise, err_str); } else { resolve_promise(js, nextPromise, res); } } else { if (state == 1) resolve_promise(js, nextPromise, val); else reject_promise(js, nextPromise, val); } } setprop(js, p_obj, js_mkstr(js, "__handlers", 10), mkarr(js)); return js_mkundef(); } static void resolve_promise(struct js *js, jsval_t p, jsval_t val) { jsval_t p_obj = mkval(T_OBJ, vdata(p)); jsoff_t state_off = lkp(js, p_obj, "__state", 7); if (state_off == 0) { return; } jsval_t state_val = resolveprop(js, mkval(T_PROP, state_off)); if ((int)tod(state_val) != 0) { return; } if (vtype(val) == T_PROMISE) { if (vdata(val) == vdata(p)) { jsval_t err = js_mkerr(js, "TypeError: Chaining cycle"); reject_promise(js, p, err); return; } jsval_t res_obj = mkobj(js, 0); setprop(js, res_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_resolve_internal)); setprop(js, res_obj, js_mkstr(js, "promise", 7), p); jsval_t res_fn = mkval(T_FUNC, vdata(res_obj)); jsval_t rej_obj = mkobj(js, 0); setprop(js, rej_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_reject_internal)); setprop(js, rej_obj, js_mkstr(js, "promise", 7), p); jsval_t rej_fn = mkval(T_FUNC, vdata(rej_obj)); jsval_t args[] = { res_fn, rej_fn }; jsval_t then_prop = js_get(js, val, "then"); if (vtype(then_prop) == T_FUNC || vtype(then_prop) == T_CFUNC) { jsval_t saved_this = js->this_val; js->this_val = val; js_call(js, then_prop, args, 2); js->this_val = saved_this; return; } } setprop(js, p_obj, js_mkstr(js, "__state", 7), tov(1.0)); setprop(js, p_obj, js_mkstr(js, "__value", 7), val); trigger_handlers(js, p); } static void reject_promise(struct js *js, jsval_t p, jsval_t val) { jsval_t p_obj = mkval(T_OBJ, vdata(p)); jsoff_t state_off = lkp(js, p_obj, "__state", 7); if (state_off == 0) return; jsval_t state_val = resolveprop(js, mkval(T_PROP, state_off)); if ((int)tod(state_val) != 0) return; setprop(js, p_obj, js_mkstr(js, "__state", 7), tov(2.0)); setprop(js, p_obj, js_mkstr(js, "__value", 7), val); trigger_handlers(js, p); } static jsval_t builtin_resolve_internal(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t p = js_get(js, me, "promise"); if (vtype(p) != T_PROMISE) return js_mkundef(); resolve_promise(js, p, nargs > 0 ? args[0] : js_mkundef()); return js_mkundef(); } static jsval_t builtin_reject_internal(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t p = js_get(js, me, "promise"); if (vtype(p) != T_PROMISE) return js_mkundef(); reject_promise(js, p, nargs > 0 ? args[0] : js_mkundef()); return js_mkundef(); } static jsval_t builtin_promise_executor_wrapper(struct js *js, jsval_t *args, int nargs); static jsval_t builtin_Promise(struct js *js, jsval_t *args, int nargs) { jsval_t p = mkpromise(js); jsval_t res_obj = mkobj(js, 0); setprop(js, res_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_resolve_internal)); setprop(js, res_obj, js_mkstr(js, "promise", 7), p); jsval_t res_fn = mkval(T_FUNC, vdata(res_obj)); jsval_t rej_obj = mkobj(js, 0); setprop(js, rej_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_reject_internal)); setprop(js, rej_obj, js_mkstr(js, "promise", 7), p); jsval_t rej_fn = mkval(T_FUNC, vdata(rej_obj)); if (nargs > 0) { jsval_t wrapper_obj = mkobj(js, 0); setprop(js, wrapper_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_promise_executor_wrapper)); setprop(js, wrapper_obj, js_mkstr(js, "executor", 8), args[0]); setprop(js, wrapper_obj, js_mkstr(js, "resolve", 7), res_fn); setprop(js, wrapper_obj, js_mkstr(js, "reject", 6), rej_fn); jsval_t wrapper_fn = mkval(T_FUNC, vdata(wrapper_obj)); queue_microtask(js, wrapper_fn); } return p; } static jsval_t builtin_promise_executor_wrapper(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t executor = js_get(js, me, "executor"); jsval_t res_fn = js_get(js, me, "resolve"); jsval_t rej_fn = js_get(js, me, "reject"); jsval_t exec_args[] = { res_fn, rej_fn }; js_call(js, executor, exec_args, 2); return js_mkundef(); } static jsval_t builtin_Promise_resolve(struct js *js, jsval_t *args, int nargs) { jsval_t val = nargs > 0 ? args[0] : js_mkundef(); if (vtype(val) == T_PROMISE) return val; jsval_t p = mkpromise(js); resolve_promise(js, p, val); return p; } static jsval_t builtin_Promise_reject(struct js *js, jsval_t *args, int nargs) { jsval_t val = nargs > 0 ? args[0] : js_mkundef(); jsval_t p = mkpromise(js); reject_promise(js, p, val); return p; } static jsval_t builtin_promise_then(struct js *js, jsval_t *args, int nargs) { jsval_t p = js->this_val; if (vtype(p) != T_PROMISE) return js_mkerr(js, "not a promise"); jsval_t nextP = mkpromise(js); jsval_t onFulfilled = nargs > 0 ? args[0] : js_mkundef(); jsval_t onRejected = nargs > 1 ? args[1] : js_mkundef(); jsval_t p_obj = mkval(T_OBJ, vdata(p)); jsval_t handlers = resolveprop(js, js_get(js, p_obj, "__handlers")); jsval_t push_args[] = { onFulfilled, onRejected, nextP }; jsval_t saved_this = js->this_val; js->this_val = handlers; builtin_array_push(js, push_args, 3); js->this_val = saved_this; jsoff_t state_off = lkp(js, p_obj, "__state", 7); int state = (int)tod(resolveprop(js, mkval(T_PROP, state_off))); if (state != 0) trigger_handlers(js, p); return nextP; } static jsval_t builtin_promise_catch(struct js *js, jsval_t *args, int nargs) { jsval_t args_then[] = { js_mkundef(), nargs > 0 ? args[0] : js_mkundef() }; return builtin_promise_then(js, args_then, 2); } static jsval_t builtin_promise_finally(struct js *js, jsval_t *args, int nargs) { jsval_t fn = nargs > 0 ? args[0] : js_mkundef(); jsval_t args_then[] = { fn, fn }; return builtin_promise_then(js, args_then, 2); } static jsval_t builtin_Promise_try(struct js *js, jsval_t *args, int nargs) { if (nargs == 0) return builtin_Promise_resolve(js, args, 0); jsval_t fn = args[0]; jsval_t res = js_call(js, fn, NULL, 0); if (is_err(res)) { jsval_t err_str = js_mkstr(js, js->errmsg, strlen(js->errmsg)); jsval_t rej_args[] = { err_str }; return builtin_Promise_reject(js, rej_args, 1); } jsval_t res_args[] = { res }; return builtin_Promise_resolve(js, res_args, 1); } static jsval_t resume_coroutine_wrapper(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t coro_val = js_get(js, me, "__coroutine"); if (vtype(coro_val) != T_NUM) return js_mkundef(); coroutine_t *coro = (coroutine_t *)(uintptr_t)tod(coro_val); if (!coro) return js_mkundef(); coro->result = nargs > 0 ? args[0] : js_mkundef(); coro->is_settled = true; coro->is_error = false; coro->is_ready = true; return js_mkundef(); } static jsval_t reject_coroutine_wrapper(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t coro_val = js_get(js, me, "__coroutine"); if (vtype(coro_val) != T_NUM) return js_mkundef(); coroutine_t *coro = (coroutine_t *)(uintptr_t)tod(coro_val); if (!coro) return js_mkundef(); coro->result = nargs > 0 ? args[0] : js_mkundef(); coro->is_settled = true; coro->is_error = true; coro->is_ready = true; return js_mkundef(); } static jsval_t builtin_Promise_all_resolve_handler(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t tracker = js_get(js, me, "tracker"); jsval_t index_val = js_get(js, me, "index"); int index = (int)tod(index_val); jsval_t value = nargs > 0 ? args[0] : js_mkundef(); jsval_t results = js_get(js, tracker, "results"); char idx[16]; snprintf(idx, sizeof(idx), "%d", index); setprop(js, results, js_mkstr(js, idx, strlen(idx)), value); jsval_t remaining_val = js_get(js, tracker, "remaining"); int remaining = (int)tod(remaining_val) - 1; setprop(js, tracker, js_mkstr(js, "remaining", 9), tov((double)remaining)); if (remaining == 0) { jsval_t result_promise = js_get(js, tracker, "promise"); resolve_promise(js, result_promise, mkval(T_ARR, vdata(results))); } return js_mkundef(); } static jsval_t builtin_Promise_all_reject_handler(struct js *js, jsval_t *args, int nargs) { jsval_t me = js->current_func; jsval_t tracker = js_get(js, me, "tracker"); jsval_t result_promise = js_get(js, tracker, "promise"); jsval_t reason = nargs > 0 ? args[0] : js_mkundef(); reject_promise(js, result_promise, reason); return js_mkundef(); } static jsval_t builtin_Promise_all(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Promise.all requires an array"); jsval_t arr = args[0]; if (vtype(arr) != T_ARR) return js_mkerr(js, "Promise.all requires an array"); jsoff_t len_off = lkp_interned(js, arr, INTERN_LENGTH, 6); if (len_off == 0) return builtin_Promise_resolve(js, NULL, 0); jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); int len = (int)tod(len_val); if (len == 0) { jsval_t empty_arr = mkarr(js); setprop(js, empty_arr, js_mkstr(js, "length", 6), tov(0.0)); jsval_t resolve_args[] = { mkval(T_ARR, vdata(empty_arr)) }; return builtin_Promise_resolve(js, resolve_args, 1); } jsval_t result_promise = mkpromise(js); jsval_t tracker = mkobj(js, 0); setprop(js, tracker, js_mkstr(js, "remaining", 9), tov((double)len)); setprop(js, tracker, js_mkstr(js, "results", 7), mkarr(js)); setprop(js, tracker, js_mkstr(js, "promise", 7), result_promise); jsval_t results = resolveprop(js, js_get(js, tracker, "results")); setprop(js, results, js_mkstr(js, "length", 6), tov((double)len)); for (int i = 0; i < len; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); jsval_t item = resolveprop(js, js_get(js, arr, idx)); if (vtype(item) != T_PROMISE) { jsval_t wrap_args[] = { item }; item = builtin_Promise_resolve(js, wrap_args, 1); } jsval_t resolve_obj = mkobj(js, 0); setprop(js, resolve_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Promise_all_resolve_handler)); setprop(js, resolve_obj, js_mkstr(js, "index", 5), tov((double)i)); setprop(js, resolve_obj, js_mkstr(js, "tracker", 7), tracker); jsval_t resolve_fn = mkval(T_FUNC, vdata(resolve_obj)); jsval_t reject_obj = mkobj(js, 0); setprop(js, reject_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Promise_all_reject_handler)); setprop(js, reject_obj, js_mkstr(js, "tracker", 7), tracker); jsval_t reject_fn = mkval(T_FUNC, vdata(reject_obj)); jsval_t then_args[] = { resolve_fn, reject_fn }; jsval_t saved_this = js->this_val; js->this_val = item; builtin_promise_then(js, then_args, 2); js->this_val = saved_this; } return result_promise; } static jsval_t builtin_Promise_race(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Promise.race requires an array"); jsval_t arr = args[0]; if (vtype(arr) != T_ARR) return js_mkerr(js, "Promise.race requires an array"); jsoff_t len_off = lkp_interned(js, arr, INTERN_LENGTH, 6); if (len_off == 0) return mkpromise(js); jsval_t len_val = resolveprop(js, mkval(T_PROP, len_off)); int len = (int)tod(len_val); if (len == 0) return mkpromise(js); jsval_t result_promise = mkpromise(js); jsval_t resolve_obj = mkobj(js, 0); setprop(js, resolve_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_resolve_internal)); setprop(js, resolve_obj, js_mkstr(js, "promise", 7), result_promise); jsval_t resolve_fn = mkval(T_FUNC, vdata(resolve_obj)); jsval_t reject_obj = mkobj(js, 0); setprop(js, reject_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_reject_internal)); setprop(js, reject_obj, js_mkstr(js, "promise", 7), result_promise); jsval_t reject_fn = mkval(T_FUNC, vdata(reject_obj)); for (int i = 0; i < len; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%d", i); jsval_t item = resolveprop(js, js_get(js, arr, idx)); if (vtype(item) != T_PROMISE) { resolve_promise(js, result_promise, item); return result_promise; } jsval_t item_obj = mkval(T_OBJ, vdata(item)); jsoff_t state_off = lkp(js, item_obj, "__state", 7); int state = (int)tod(resolveprop(js, mkval(T_PROP, state_off))); if (state == 1) { jsoff_t val_off = lkp(js, item_obj, "__value", 7); jsval_t val = resolveprop(js, mkval(T_PROP, val_off)); resolve_promise(js, result_promise, val); return result_promise; } else if (state == 2) { jsoff_t val_off = lkp(js, item_obj, "__value", 7); jsval_t val = resolveprop(js, mkval(T_PROP, val_off)); reject_promise(js, result_promise, val); return result_promise; } jsval_t then_args[] = { resolve_fn, reject_fn }; jsval_t saved_this = js->this_val; js->this_val = item; builtin_promise_then(js, then_args, 2); js->this_val = saved_this; } return result_promise; } static jsval_t do_instanceof(struct js *js, jsval_t l, jsval_t r) { uint8_t ltype = vtype(l); uint8_t rtype = vtype(r); if (rtype != T_FUNC && rtype != T_CFUNC) { return js_mkerr_typed(js, JS_ERR_TYPE, "Right-hand side of 'instanceof' is not callable"); } if (rtype == T_CFUNC) { // handle legacy T_CFUNC jsval_t (*fn)(struct js *, jsval_t *, int) = (jsval_t(*)(struct js *, jsval_t *, int)) vdata(r); if (fn == builtin_Object) { return mkval(T_BOOL, ltype == T_OBJ ? 1 : 0); } else if (fn == builtin_Function) { return mkval(T_BOOL, (ltype == T_FUNC || ltype == T_CFUNC) ? 1 : 0); } else if (fn == builtin_String) { return mkval(T_BOOL, ltype == T_STR ? 1 : 0); } else if (fn == builtin_Number) { return mkval(T_BOOL, ltype == T_NUM ? 1 : 0); } else if (fn == builtin_Boolean) { return mkval(T_BOOL, ltype == T_BOOL ? 1 : 0); } else if (fn == builtin_Array) { return mkval(T_BOOL, ltype == T_ARR ? 1 : 0); } else if (fn == builtin_Promise) { return mkval(T_BOOL, ltype == T_PROMISE ? 1 : 0); } return mkval(T_BOOL, 0); } jsval_t func_obj = mkval(T_OBJ, vdata(r)); jsoff_t proto_off = lkp_interned(js, func_obj, INTERN_PROTOTYPE, 9); if (proto_off == 0) return mkval(T_BOOL, 0); jsval_t ctor_proto = resolveprop(js, mkval(T_PROP, proto_off)); uint8_t pt = vtype(ctor_proto); if (pt != T_OBJ && pt != T_ARR && pt != T_FUNC) return mkval(T_BOOL, 0); if (ltype == T_STR || ltype == T_NUM || ltype == T_BOOL) { jsval_t type_proto = get_prototype_for_type(js, ltype); return mkval(T_BOOL, vdata(ctor_proto) == vdata(type_proto) ? 1 : 0); } if (ltype != T_OBJ && ltype != T_ARR && ltype != T_FUNC && ltype != T_PROMISE) { return mkval(T_BOOL, 0); } jsval_t current = get_proto(js, l); int depth = 0; const int MAX_DEPTH = 32; while (vtype(current) != T_NULL && depth < MAX_DEPTH) { if (vdata(current) == vdata(ctor_proto)) return mkval(T_BOOL, 1); current = get_proto(js, current); depth++; } return mkval(T_BOOL, 0); } static jsval_t do_in(struct js *js, jsval_t l, jsval_t r) { jsoff_t prop_len; const char *prop_name; char num_buf[32]; if (vtype(l) == T_STR) { jsoff_t prop_off = vstr(js, l, &prop_len); prop_name = (char *) &js->mem[prop_off]; } else if (vtype(l) == T_NUM) { prop_len = (jsoff_t) strnum(l, num_buf, sizeof(num_buf)); prop_name = num_buf; } else { return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot use 'in' operator to search for '%s' in non-object", js_str(js, l)); } if (vtype(r) != T_OBJ && vtype(r) != T_ARR && vtype(r) != T_FUNC) { return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot use 'in' operator to search for '%.*s' in non-object", (int)prop_len, prop_name); } if (is_proxy(js, r)) { jsval_t result = proxy_has(js, r, prop_name, prop_len); if (is_err(result)) return result; return js_truthy(js, result) ? js_mktrue() : js_mkfalse(); } jsoff_t found = lkp_proto(js, r, prop_name, prop_len); return mkval(T_BOOL, found != 0 ? 1 : 0); } static char *esm_get_extension(const char *path) { const char *dot = strrchr(path, '.'); const char *slash = strrchr(path, '/'); if (dot && (!slash || dot > slash)) { return strdup(dot); } return strdup(".js"); } static char *esm_try_resolve(const char *dir, const char *spec, const char *suffix) { char path[PATH_MAX]; snprintf(path, PATH_MAX, "%s/%s%s", dir, spec, suffix); return realpath(path, NULL); } static bool esm_has_extension(const char *spec) { const char *dot = strrchr(spec, '.'); const char *slash = strrchr(spec, '/'); return dot && (!slash || dot > slash); } static char *esm_resolve_path(const char *specifier, const char *base_path) { if (!(specifier[0] == '/' || (specifier[0] == '.' && specifier[1] == '/') || (specifier[0] == '.' && specifier[1] == '.' && specifier[2] == '/'))) { return strdup(specifier); } char *base_copy = strdup(base_path); char *dir = dirname(base_copy); char *result = NULL; const char *spec = (specifier[0] == '.' && specifier[1] == '/') ? specifier + 2 : specifier; bool has_ext = esm_has_extension(spec); if ((result = esm_try_resolve(dir, spec, ""))) goto cleanup; if (has_ext) goto cleanup; char *base_ext = esm_get_extension(base_path); if ((result = esm_try_resolve(dir, spec, base_ext))) goto cleanup_ext; if (strcmp(base_ext, ".js") != 0 && (result = esm_try_resolve(dir, spec, ".js"))) goto cleanup_ext; if ((result = esm_try_resolve(dir, spec, ".json"))) goto cleanup_ext; char idx[PATH_MAX]; snprintf(idx, PATH_MAX, "%s/index%s", spec, base_ext); if ((result = esm_try_resolve(dir, idx, ""))) goto cleanup_ext; if (strcmp(base_ext, ".js") != 0) { snprintf(idx, PATH_MAX, "%s/index.js", spec); if ((result = esm_try_resolve(dir, idx, ""))) goto cleanup_ext; } cleanup_ext: free(base_ext); cleanup: free(base_copy); return result; } static bool esm_is_json(const char *path) { size_t len = strlen(path); return len > 5 && strcmp(path + len - 5, ".json") == 0; } static bool esm_is_text(const char *path) { size_t len = strlen(path); return (len > 4 && strcmp(path + len - 4, ".txt") == 0) || (len > 3 && strcmp(path + len - 3, ".md") == 0) || (len > 5 && strcmp(path + len - 5, ".html") == 0) || (len > 4 && strcmp(path + len - 4, ".css") == 0); } static bool esm_is_image(const char *path) { size_t len = strlen(path); return (len > 4 && strcmp(path + len - 4, ".png") == 0) || (len > 4 && strcmp(path + len - 4, ".jpg") == 0) || (len > 5 && strcmp(path + len - 5, ".jpeg") == 0) || (len > 4 && strcmp(path + len - 4, ".gif") == 0) || (len > 4 && strcmp(path + len - 4, ".svg") == 0) || (len > 5 && strcmp(path + len - 5, ".webp") == 0); } static char *esm_canonicalize_path(const char *path) { if (!path) return NULL; char *canonical = strdup(path); if (!canonical) return NULL; char *src = canonical, *dst = canonical; while (*src) { if (*src == '/') { *dst++ = '/'; while (*src == '/') src++; if (strncmp(src, "./", 2) == 0) { src += 2; } else if (strncmp(src, "../", 3) == 0) { src += 3; if (dst > canonical + 1) { dst--; while (dst > canonical && *(dst - 1) != '/') dst--; } } } else { *dst++ = *src++; } } *dst = '\0'; if (strlen(canonical) > 1 && canonical[strlen(canonical) - 1] == '/') { canonical[strlen(canonical) - 1] = '\0'; } return canonical; } static esm_module_t *esm_find_module(const char *resolved_path) { char *canonical_path = esm_canonicalize_path(resolved_path); if (!canonical_path) return NULL; esm_module_t *mod = NULL; HASH_FIND_STR(global_module_cache.modules, canonical_path, mod); free(canonical_path); return mod; } static esm_module_t *esm_create_module(const char *path, const char *resolved_path) { char *canonical_path = esm_canonicalize_path(resolved_path); if (!canonical_path) return NULL; esm_module_t *existing_mod = NULL; HASH_FIND_STR(global_module_cache.modules, canonical_path, existing_mod); if (existing_mod) { free(canonical_path); return existing_mod; } esm_module_t *mod = (esm_module_t *)malloc(sizeof(esm_module_t)); if (!mod) { free(canonical_path); return NULL; } mod->path = strdup(path); mod->resolved_path = canonical_path; mod->namespace_obj = js_mkundef(); mod->default_export = js_mkundef(); mod->is_loaded = false; mod->is_loading = false; mod->is_json = esm_is_json(resolved_path); mod->is_text = esm_is_text(resolved_path); mod->is_image = esm_is_image(resolved_path); mod->next = NULL; HASH_ADD_STR(global_module_cache.modules, resolved_path, mod); global_module_cache.count++; return mod; } static void esm_cleanup_module_cache(void) { esm_module_t *current, *tmp; HASH_ITER(hh, global_module_cache.modules, current, tmp) { HASH_DEL(global_module_cache.modules, current); if (current->path) free(current->path); if (current->resolved_path) free(current->resolved_path); free(current); } global_module_cache.count = 0; } static jsval_t esm_load_json(struct js *js, const char *path) { FILE *fp = fopen(path, "rb"); if (!fp) return js_mkerr(js, "Cannot open JSON file: %s", path); fseek(fp, 0, SEEK_END); long size = ftell(fp); fseek(fp, 0, SEEK_SET); char *content = (char *)malloc(size + 1); if (!content) { fclose(fp); return js_mkerr(js, "OOM loading JSON"); } fread(content, 1, size, fp); fclose(fp); content[size] = '\0'; jsval_t result = js_eval(js, content, size); free(content); return result; } static jsval_t esm_load_text(struct js *js, const char *path) { FILE *fp = fopen(path, "rb"); if (!fp) return js_mkerr(js, "Cannot open text file: %s", path); fseek(fp, 0, SEEK_END); long size = ftell(fp); fseek(fp, 0, SEEK_SET); char *content = (char *)malloc(size + 1); if (!content) { fclose(fp); return js_mkerr(js, "OOM loading text"); } fread(content, 1, size, fp); fclose(fp); content[size] = '\0'; jsval_t result = js_mkstr(js, content, size); free(content); return result; } static jsval_t esm_load_image(struct js *js, const char *path) { FILE *fp = fopen(path, "rb"); if (!fp) return js_mkerr(js, "Cannot open image file: %s", path); fseek(fp, 0, SEEK_END); long size = ftell(fp); fseek(fp, 0, SEEK_SET); unsigned char *content = (unsigned char *)malloc(size); if (!content) { fclose(fp); return js_mkerr(js, "OOM loading image"); } fread(content, 1, size, fp); fclose(fp); jsval_t obj = mkobj(js, 0); jsval_t data_arr = mkarr(js); for (long i = 0; i < size; i++) { char idx[16]; snprintf(idx, sizeof(idx), "%ld", i); setprop(js, data_arr, js_mkstr(js, idx, strlen(idx)), tov((double)content[i])); } setprop(js, data_arr, js_mkstr(js, "length", 6), tov((double)size)); setprop(js, obj, js_mkstr(js, "data", 4), mkval(T_ARR, vdata(data_arr))); setprop(js, obj, js_mkstr(js, "path", 4), js_mkstr(js, path, strlen(path))); setprop(js, obj, js_mkstr(js, "size", 4), tov((double)size)); free(content); return obj; } static jsval_t esm_load_module(struct js *js, esm_module_t *mod) { if (mod->is_loaded) return mod->namespace_obj; if (mod->is_loading) return js_mkerr(js, "Circular dependency detected: %s", mod->path); mod->is_loading = true; if (mod->is_json) { jsval_t json_val = esm_load_json(js, mod->resolved_path); if (is_err(json_val)) { mod->is_loading = false; return json_val; } jsval_t ns = mkobj(js, 0); setprop(js, ns, js_mkstr(js, "default", 7), json_val); mod->namespace_obj = ns; mod->default_export = json_val; mod->is_loaded = true; mod->is_loading = false; return ns; } if (mod->is_text) { jsval_t text_val = esm_load_text(js, mod->resolved_path); if (is_err(text_val)) { mod->is_loading = false; return text_val; } jsval_t ns = mkobj(js, 0); setprop(js, ns, js_mkstr(js, "default", 7), text_val); mod->namespace_obj = ns; mod->default_export = text_val; mod->is_loaded = true; mod->is_loading = false; return ns; } if (mod->is_image) { jsval_t img_val = esm_load_image(js, mod->resolved_path); if (is_err(img_val)) { mod->is_loading = false; return img_val; } jsval_t ns = mkobj(js, 0); setprop(js, ns, js_mkstr(js, "default", 7), img_val); mod->namespace_obj = ns; mod->default_export = img_val; mod->is_loaded = true; mod->is_loading = false; return ns; } FILE *fp = fopen(mod->resolved_path, "rb"); if (!fp) { mod->is_loading = false; return js_mkerr(js, "Cannot open module: %s", mod->resolved_path); } fseek(fp, 0, SEEK_END); long size = ftell(fp); fseek(fp, 0, SEEK_SET); char *content = (char *)malloc(size + 1); if (!content) { fclose(fp); mod->is_loading = false; return js_mkerr(js, "OOM loading module"); } fread(content, 1, size, fp); fclose(fp); content[size] = '\0'; jsval_t ns = mkobj(js, 0); mod->namespace_obj = ns; jsval_t glob = js_glob(js); jsval_t module_scope = js_get(js, glob, "__esm_module_scope"); jsval_t prev_module = module_scope; js_set(js, glob, "__esm_module_scope", ns); const char *prev_filename = js->filename; jsval_t saved_scope = js->scope; js_set_filename(js, mod->resolved_path); mkscope(js); jsval_t result = js_eval(js, content, size); free(content); js->scope = saved_scope; js_set_filename(js, prev_filename); js_set(js, glob, "__esm_module_scope", prev_module); if (is_err(result)) { mod->is_loading = false; return result; } jsoff_t default_off = lkp(js, ns, "default", 7); if (default_off != 0) { mod->default_export = resolveprop(js, mkval(T_PROP, default_off)); } mod->is_loaded = true; mod->is_loading = false; return ns; } static jsval_t builtin_import(struct js *js, jsval_t *args, int nargs) { if (nargs < 1 || vtype(args[0]) != T_STR) { return js_mkerr(js, "import() requires a string specifier"); } jsoff_t spec_len; jsoff_t spec_off = vstr(js, args[0], &spec_len); const char *specifier = (char *)&js->mem[spec_off]; ant_library_t *lib = find_library(specifier, spec_len); if (lib) { jsval_t lib_obj = lib->init_fn(js); if (is_err(lib_obj)) return builtin_Promise_reject(js, &lib_obj, 1); jsval_t promise_args[] = { lib_obj }; return builtin_Promise_resolve(js, promise_args, 1); } const char *base_path = js->filename ? js->filename : "."; char *resolved_path = esm_resolve_path(specifier, base_path); if (!resolved_path) { return js_mkerr(js, "Cannot resolve module: %.*s", (int)spec_len, specifier); } esm_module_t *mod = esm_find_module(resolved_path); if (!mod) { mod = esm_create_module(specifier, resolved_path); if (!mod) { free(resolved_path); return js_mkerr(js, "Cannot create module"); } } jsval_t ns = esm_load_module(js, mod); free(resolved_path); if (is_err(ns)) return builtin_Promise_reject(js, &ns, 1); jsval_t promise_args[] = { ns }; return builtin_Promise_resolve(js, promise_args, 1); } static jsval_t builtin_import_meta_resolve(struct js *js, jsval_t *args, int nargs) { if (nargs < 1 || vtype(args[0]) != T_STR) { return js_mkerr(js, "import.meta.resolve() requires a string specifier"); } jsoff_t spec_len; jsoff_t spec_off = vstr(js, args[0], &spec_len); const char *specifier = (char *)&js->mem[spec_off]; const char *base_path = js->filename ? js->filename : "."; char *resolved_path = esm_resolve_path(specifier, base_path); if (!resolved_path) { return js_mkerr(js, "Cannot resolve module: %.*s", (int)spec_len, specifier); } size_t url_len = strlen(resolved_path) + 8; char *url = malloc(url_len); if (!url) { free(resolved_path); return js_mkerr(js, "oom"); } snprintf(url, url_len, "file://%s", resolved_path); free(resolved_path); jsval_t result = js_mkstr(js, url, strlen(url)); free(url); return result; } void js_setup_import_meta(struct js *js, const char *filename) { if (!filename) return; jsval_t import_meta = mkobj(js, 0); if (is_err(import_meta)) return; size_t url_len = strlen(filename) + 8; char *url = malloc(url_len); if (url) { snprintf(url, url_len, "file://%s", filename); jsval_t url_val = js_mkstr(js, url, strlen(url)); if (!is_err(url_val)) setprop(js, import_meta, js_mkstr(js, "url", 3), url_val); free(url); } jsval_t filename_val = js_mkstr(js, filename, strlen(filename)); if (!is_err(filename_val)) setprop(js, import_meta, js_mkstr(js, "filename", 8), filename_val); char *filename_copy = strdup(filename); if (filename_copy) { char *dir = dirname(filename_copy); if (dir) { jsval_t dirname_val = js_mkstr(js, dir, strlen(dir)); if (!is_err(dirname_val)) setprop(js, import_meta, js_mkstr(js, "dirname", 7), dirname_val); } free(filename_copy); } setprop(js, import_meta, js_mkstr(js, "main", 4), js_mktrue()); jsval_t resolve_fn = js_mkfun(builtin_import_meta_resolve); setprop(js, import_meta, js_mkstr(js, "resolve", 7), resolve_fn); jsval_t glob = js_glob(js); jsoff_t import_off = lkp(js, glob, "import", 6); if (import_off != 0) { jsval_t import_fn = resolveprop(js, mkval(T_PROP, import_off)); if (vtype(import_fn) == T_FUNC) { jsval_t import_obj = mkval(T_OBJ, vdata(import_fn)); setprop(js, import_obj, js_mkstr(js, "meta", 4), import_meta); } } } static jsval_t js_import_stmt(struct js *js) { js->consumed = 1; if (next(js) == TOK_LPAREN) { js->consumed = 1; jsval_t spec = js_expr(js); EXPECT(TOK_RPAREN, ); if (vtype(spec) != T_STR) { return js_mkerr(js, "import() requires string"); } jsval_t args[] = { spec }; return builtin_import(js, args, 1); } if (next(js) == TOK_MUL) { js->consumed = 1; EXPECT(TOK_AS, ); EXPECT(TOK_IDENTIFIER, ); const char *namespace_name = &js->code[js->toff]; size_t namespace_len = js->tlen; js->consumed = 1; EXPECT(TOK_FROM, ); EXPECT(TOK_STRING, ); jsval_t spec = js_str_literal(js); jsoff_t spec_len; jsoff_t spec_off = vstr(js, spec, &spec_len); const char *specifier = (char *)&js->mem[spec_off]; jsval_t ns = js_mkundef(); ant_library_t *lib = find_library(specifier, spec_len); if (lib) { ns = lib->init_fn(js); } else { const char *base_path = js->filename ? js->filename : "."; char *resolved_path = esm_resolve_path(specifier, base_path); if (!resolved_path) { return js_mkerr(js, "Cannot resolve module: %.*s", (int)spec_len, specifier); } esm_module_t *mod = esm_find_module(resolved_path); if (!mod) { mod = esm_create_module(specifier, resolved_path); if (!mod) { free(resolved_path); return js_mkerr(js, "Cannot create module"); } } js_parse_state_t saved; JS_SAVE_STATE(js, saved); ns = esm_load_module(js, mod); JS_RESTORE_STATE(js, saved); free(resolved_path); } js->consumed = 1; next(js); js->consumed = 0; if (is_err(ns)) return ns; setprop(js, js->scope, js_mkstr(js, namespace_name, namespace_len), ns); return js_mkundef(); } if (next(js) == TOK_IDENTIFIER) { const char *default_name = &js->code[js->toff]; size_t default_len = js->tlen; js->consumed = 1; typedef struct { const char *import_name; size_t import_len; const char *local_name; size_t local_len; } import_binding_t; import_binding_t bindings[64]; int binding_count = 0; if (next(js) == TOK_COMMA) { js->consumed = 1; if (next(js) == TOK_LBRACE) { js->consumed = 1; while (next(js) != TOK_RBRACE && binding_count < 64) { EXPECT(TOK_IDENTIFIER, ); const char *import_name = &js->code[js->toff]; size_t import_len = js->tlen; js->consumed = 1; const char *local_name = import_name; size_t local_len = import_len; if (next(js) == TOK_AS) { js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); local_name = &js->code[js->toff]; local_len = js->tlen; js->consumed = 1; } bindings[binding_count].import_name = import_name; bindings[binding_count].import_len = import_len; bindings[binding_count].local_name = local_name; bindings[binding_count].local_len = local_len; binding_count++; if (next(js) == TOK_COMMA) js->consumed = 1; } EXPECT(TOK_RBRACE, ); } else if (next(js) == TOK_MUL) { js->consumed = 1; EXPECT(TOK_AS, ); EXPECT(TOK_IDENTIFIER, ); bindings[binding_count].import_name = NULL; bindings[binding_count].import_len = 0; bindings[binding_count].local_name = &js->code[js->toff]; bindings[binding_count].local_len = js->tlen; binding_count++; js->consumed = 1; } else { return js_mkerr(js, "Expected '{' or '*' after ',' in import"); } } EXPECT(TOK_FROM, ); EXPECT(TOK_STRING, ); jsval_t spec = js_str_literal(js); jsoff_t spec_len; jsoff_t spec_off = vstr(js, spec, &spec_len); const char *specifier = (char *)&js->mem[spec_off]; jsval_t ns = js_mkundef(); ant_library_t *lib = find_library(specifier, spec_len); if (lib) { ns = lib->init_fn(js); } else { const char *base_path = js->filename ? js->filename : "."; char *resolved_path = esm_resolve_path(specifier, base_path); if (!resolved_path) { return js_mkerr(js, "Cannot resolve module: %.*s", (int)spec_len, specifier); } esm_module_t *mod = esm_find_module(resolved_path); if (!mod) { mod = esm_create_module(specifier, resolved_path); if (!mod) { free(resolved_path); return js_mkerr(js, "Cannot create module"); } } js_parse_state_t saved; JS_SAVE_STATE(js, saved); ns = esm_load_module(js, mod); JS_RESTORE_STATE(js, saved); free(resolved_path); } js->consumed = 1; next(js); js->consumed = 0; if (is_err(ns)) return ns; jsoff_t default_off = lkp(js, ns, "default", 7); jsval_t default_val = default_off != 0 ? resolveprop(js, mkval(T_PROP, default_off)) : js_mkundef(); setprop(js, js->scope, js_mkstr(js, default_name, default_len), default_val); for (int i = 0; i < binding_count; i++) { if (bindings[i].import_name == NULL) { setprop(js, js->scope, js_mkstr(js, bindings[i].local_name, bindings[i].local_len), ns); } else { jsoff_t prop_off = lkp(js, ns, bindings[i].import_name, bindings[i].import_len); jsval_t imported_val = prop_off != 0 ? resolveprop(js, mkval(T_PROP, prop_off)) : js_mkundef(); setprop(js, js->scope, js_mkstr(js, bindings[i].local_name, bindings[i].local_len), imported_val); } } return js_mkundef(); } if (next(js) == TOK_LBRACE) { js->consumed = 1; typedef struct { const char *import_name; size_t import_len; const char *local_name; size_t local_len; } import_binding_t; import_binding_t bindings[64]; int binding_count = 0; while (next(js) != TOK_RBRACE && binding_count < 64) { EXPECT(TOK_IDENTIFIER, ); const char *import_name = &js->code[js->toff]; size_t import_len = js->tlen; js->consumed = 1; const char *local_name = import_name; size_t local_len = import_len; if (next(js) == TOK_AS) { js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); local_name = &js->code[js->toff]; local_len = js->tlen; js->consumed = 1; } bindings[binding_count].import_name = import_name; bindings[binding_count].import_len = import_len; bindings[binding_count].local_name = local_name; bindings[binding_count].local_len = local_len; binding_count++; if (next(js) == TOK_COMMA) js->consumed = 1; } EXPECT(TOK_RBRACE, ); EXPECT(TOK_FROM, ); EXPECT(TOK_STRING, ); jsval_t spec = js_str_literal(js); jsoff_t spec_len; jsoff_t spec_off = vstr(js, spec, &spec_len); const char *specifier = (char *)&js->mem[spec_off]; jsval_t ns = js_mkundef(); ant_library_t *lib = find_library(specifier, spec_len); if (lib) { ns = lib->init_fn(js); } else { const char *base_path = js->filename ? js->filename : "."; char *resolved_path = esm_resolve_path(specifier, base_path); if (!resolved_path) return js_mkerr(js, "Cannot resolve module: %.*s", (int)spec_len, specifier); esm_module_t *mod = esm_find_module(resolved_path); if (!mod) { mod = esm_create_module(specifier, resolved_path); if (!mod) { free(resolved_path); return js_mkerr(js, "Cannot create module"); } } js_parse_state_t saved; JS_SAVE_STATE(js, saved); jsoff_t saved_toff = js->toff, saved_tlen = js->tlen; jsval_t saved_scope = js->scope; ns = esm_load_module(js, mod); JS_RESTORE_STATE(js, saved); js->toff = saved_toff; js->tlen = saved_tlen; js->scope = saved_scope; free(resolved_path); } js->consumed = 1; next(js); js->consumed = 0; if (is_err(ns)) return ns; for (int i = 0; i < binding_count; i++) { jsoff_t prop_off = lkp(js, ns, bindings[i].import_name, bindings[i].import_len); jsval_t imported_val = prop_off != 0 ? resolveprop(js, mkval(T_PROP, prop_off)) : js_mkundef(); setprop(js, js->scope, js_mkstr(js, bindings[i].local_name, bindings[i].local_len), imported_val); } return js_mkundef(); } return js_mkerr(js, "Invalid import statement"); } static jsval_t js_export_stmt(struct js *js) { js->consumed = 1; jsval_t glob = js_glob(js); jsval_t module_ns = js_get(js, glob, "__esm_module_scope"); if (vtype(module_ns) != T_OBJ) { module_ns = mkobj(js, 0); js_set(js, glob, "__esm_module_scope", module_ns); } if (next(js) == TOK_DEFAULT) { js->consumed = 1; jsval_t value = js_assignment(js); if (is_err(value)) return value; setprop(js, module_ns, js_mkstr(js, "default", 7), resolveprop(js, value)); return value; } if (next(js) == TOK_CONST || next(js) == TOK_LET || next(js) == TOK_VAR) { bool is_const = (next(js) == TOK_CONST); js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); const char *name = &js->code[js->toff]; size_t name_len = js->tlen; js->consumed = 1; jsval_t value = js_mkundef(); if (next(js) == TOK_ASSIGN) { js->consumed = 1; value = js_assignment(js); if (is_err(value)) return value; } jsval_t key = js_mkstr(js, name, name_len); mkprop(js, js->scope, key, resolveprop(js, value), is_const); setprop(js, module_ns, key, resolveprop(js, value)); return value; } if (next(js) == TOK_FUNC) { jsval_t func = js_func_literal(js, false); if (is_err(func)) return func; jsval_t func_obj = mkval(T_OBJ, vdata(func)); jsoff_t name_off = lkp(js, func_obj, "name", 4); if (name_off != 0) { jsval_t name_val = resolveprop(js, mkval(T_PROP, name_off)); if (vtype(name_val) == T_STR) { setprop(js, js->scope, name_val, func); setprop(js, module_ns, name_val, func); } } return func; } if (next(js) == TOK_CLASS) { jsval_t cls = js_class_decl(js); if (is_err(cls)) return cls; jsval_t cls_obj = mkval(T_OBJ, vdata(cls)); jsoff_t name_off = lkp(js, cls_obj, "name", 4); if (name_off != 0) { jsval_t name_val = resolveprop(js, mkval(T_PROP, name_off)); if (vtype(name_val) == T_STR) { setprop(js, js->scope, name_val, cls); setprop(js, module_ns, name_val, cls); } } return cls; } if (next(js) == TOK_LBRACE) { js->consumed = 1; while (next(js) != TOK_RBRACE) { EXPECT(TOK_IDENTIFIER, ); const char *local_name = &js->code[js->toff]; size_t local_len = js->tlen; js->consumed = 1; const char *export_name = local_name; size_t export_len = local_len; if (next(js) == TOK_AS) { js->consumed = 1; EXPECT(TOK_IDENTIFIER, ); export_name = &js->code[js->toff]; export_len = js->tlen; js->consumed = 1; } jsval_t local_val = lookup(js, local_name, local_len); if (is_err(local_val)) return local_val; setprop(js, module_ns, js_mkstr(js, export_name, export_len), resolveprop(js, local_val)); if (next(js) == TOK_COMMA) js->consumed = 1; } EXPECT(TOK_RBRACE, ); if (next(js) == TOK_SEMICOLON) js->consumed = 1; return js_mkundef(); } return js_mkerr(js, "Invalid export statement"); } typedef struct weakmap_entry { jsval_t key_obj; jsval_t value; UT_hash_handle hh; } weakmap_entry_t; typedef struct weakset_entry { jsval_t value_obj; UT_hash_handle hh; } weakset_entry_t; static const char* jsval_to_key(struct js *js, jsval_t val) { if (vtype(val) == T_STR) { jsoff_t len; jsoff_t off = vstr(js, val, &len); return (char *)&js->mem[off]; } else return js_str(js, val); } static jsval_t builtin_Map(struct js *js, jsval_t *args, int nargs) { jsval_t map_obj = mkobj(js, 0); jsval_t map_proto = get_ctor_proto(js, "Map", 3); if (vtype(map_proto) == T_OBJ) set_proto(js, map_obj, map_proto); map_entry_t **map_head = (map_entry_t **)ANT_GC_MALLOC(sizeof(map_entry_t *)); if (!map_head) return js_mkerr(js, "out of memory"); *map_head = NULL; jsval_t map_ptr = mkval(T_NUM, (size_t)map_head); jsval_t map_key = js_mkstr(js, "__map", 5); setprop(js, map_obj, map_key, map_ptr); if (nargs == 0 || vtype(args[0]) != T_ARR) return map_obj; jsval_t iterable = args[0]; jsoff_t length = arr_length(js, iterable); for (jsoff_t i = 0; i < length; i++) { jsval_t entry = arr_get(js, iterable, i); if (vtype(entry) != T_ARR) continue; jsoff_t entry_len = arr_length(js, entry); if (entry_len < 2) continue; jsval_t key = arr_get(js, entry, 0); jsval_t value = arr_get(js, entry, 1); const char *key_str = jsval_to_key(js, key); map_entry_t *map_entry; HASH_FIND_STR(*map_head, key_str, map_entry); if (map_entry) { map_entry->value = value; continue; } map_entry = (map_entry_t *)ANT_GC_MALLOC(sizeof(map_entry_t)); if (!map_entry) return js_mkerr(js, "out of memory"); map_entry->key = strdup(key_str); map_entry->value = value; HASH_ADD_STR(*map_head, key, map_entry); } return map_obj; } static jsval_t builtin_Set(struct js *js, jsval_t *args, int nargs) { jsval_t set_obj = mkobj(js, 0); jsval_t set_proto_val = get_ctor_proto(js, "Set", 3); if (vtype(set_proto_val) == T_OBJ) set_proto(js, set_obj, set_proto_val); set_entry_t **set_head = (set_entry_t **)ANT_GC_MALLOC(sizeof(set_entry_t *)); if (!set_head) return js_mkerr(js, "out of memory"); *set_head = NULL; jsval_t set_ptr = mkval(T_NUM, (size_t)set_head); jsval_t set_key = js_mkstr(js, "__set", 5); setprop(js, set_obj, set_key, set_ptr); if (nargs == 0 || vtype(args[0]) != T_ARR) return set_obj; jsval_t iterable = args[0]; jsoff_t length = arr_length(js, iterable); for (jsoff_t i = 0; i < length; i++) { jsval_t value = arr_get(js, iterable, i); const char *key_str = jsval_to_key(js, value); set_entry_t *entry; HASH_FIND_STR(*set_head, key_str, entry); if (entry) continue; entry = (set_entry_t *)ANT_GC_MALLOC(sizeof(set_entry_t)); if (!entry) return js_mkerr(js, "out of memory"); entry->value = value; entry->key = strdup(key_str); HASH_ADD_KEYPTR(hh, *set_head, entry->key, strlen(entry->key), entry); } return set_obj; } static map_entry_t** get_map_from_obj(struct js *js, jsval_t obj) { jsoff_t map_off = lkp(js, obj, "__map", 5); if (map_off == 0) return NULL; jsval_t map_val = resolveprop(js, mkval(T_PROP, map_off)); if (vtype(map_val) != T_NUM) return NULL; return (map_entry_t**)(size_t)vdata(map_val); } static set_entry_t** get_set_from_obj(struct js *js, jsval_t obj) { jsoff_t set_off = lkp(js, obj, "__set", 5); if (set_off == 0) return NULL; jsval_t set_val = resolveprop(js, mkval(T_PROP, set_off)); if (vtype(set_val) != T_NUM) return NULL; return (set_entry_t**)(size_t)vdata(set_val); } static jsval_t map_set(struct js *js, jsval_t *args, int nargs) { if (nargs < 2) return js_mkerr(js, "Map.set() requires 2 arguments"); jsval_t this_val = js->this_val; map_entry_t **map_ptr = get_map_from_obj(js, this_val); if (!map_ptr) return js_mkerr(js, "Invalid Map object"); const char *key_str; if (vtype(args[0]) == T_STR) { jsoff_t len; jsoff_t off = vstr(js, args[0], &len); key_str = (char *)&js->mem[off]; } else key_str = js_str(js, args[0]); map_entry_t *entry; HASH_FIND_STR(*map_ptr, key_str, entry); if (entry) { entry->value = args[1]; } else { entry = (map_entry_t *)ANT_GC_MALLOC(sizeof(map_entry_t)); if (!entry) return js_mkerr(js, "out of memory"); entry->key = strdup(key_str); entry->value = args[1]; HASH_ADD_STR(*map_ptr, key, entry); } return this_val; } static jsval_t map_get(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Map.get() requires 1 argument"); jsval_t this_val = js->this_val; map_entry_t **map_ptr = get_map_from_obj(js, this_val); if (!map_ptr) return js_mkundef(); const char *key_str; if (vtype(args[0]) == T_STR) { jsoff_t len; jsoff_t off = vstr(js, args[0], &len); key_str = (char *)&js->mem[off]; } else key_str = js_str(js, args[0]); map_entry_t *entry; HASH_FIND_STR(*map_ptr, key_str, entry); return entry ? entry->value : js_mkundef(); } static jsval_t map_has(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Map.has() requires 1 argument"); jsval_t this_val = js->this_val; map_entry_t **map_ptr = get_map_from_obj(js, this_val); if (!map_ptr) return mkval(T_BOOL, 0); const char *key_str; if (vtype(args[0]) == T_STR) { jsoff_t len; jsoff_t off = vstr(js, args[0], &len); key_str = (char *)&js->mem[off]; } else key_str = js_str(js, args[0]); map_entry_t *entry; HASH_FIND_STR(*map_ptr, key_str, entry); return mkval(T_BOOL, entry ? 1 : 0); } static jsval_t map_delete(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Map.delete() requires 1 argument"); jsval_t this_val = js->this_val; map_entry_t **map_ptr = get_map_from_obj(js, this_val); if (!map_ptr) return mkval(T_BOOL, 0); const char *key_str; if (vtype(args[0]) == T_STR) { jsoff_t len; jsoff_t off = vstr(js, args[0], &len); key_str = (char *)&js->mem[off]; } else key_str = js_str(js, args[0]); map_entry_t *entry; HASH_FIND_STR(*map_ptr, key_str, entry); if (entry) { HASH_DEL(*map_ptr, entry); free(entry->key); ANT_GC_FREE(entry); return mkval(T_BOOL, 1); } return mkval(T_BOOL, 0); } static jsval_t map_clear(struct js *js, jsval_t *args, int nargs) { jsval_t this_val = js->this_val; map_entry_t **map_ptr = get_map_from_obj(js, this_val); if (!map_ptr) return js_mkundef(); map_entry_t *entry, *tmp; HASH_ITER(hh, *map_ptr, entry, tmp) { HASH_DEL(*map_ptr, entry); free(entry->key); ANT_GC_FREE(entry); } *map_ptr = NULL; return js_mkundef(); } static jsval_t map_size(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t this_val = js->this_val; map_entry_t **map_ptr = get_map_from_obj(js, this_val); if (!map_ptr) return tov(0); size_t count = HASH_COUNT(*map_ptr); return tov((double)count); } static jsval_t map_iter_next(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t this_val = js->this_val; jsval_t idx_val = js_get(js, this_val, "__idx"); jsval_t keys = js_get(js, this_val, "__keys"); jsval_t vals = js_get(js, this_val, "__vals"); jsval_t len_val = js_get(js, this_val, "__len"); int idx = (int)js_getnum(idx_val); int len = (int)js_getnum(len_val); jsval_t result = js_mkobj(js); if (idx >= len) { js_set(js, result, "done", js_mktrue()); js_set(js, result, "value", js_mkundef()); } else { char idxstr[16]; uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t k = js_get(js, keys, idxstr); jsval_t v = js_get(js, vals, idxstr); jsval_t entry = js_mkarr(js); js_arr_push(js, entry, k); js_arr_push(js, entry, v); js_set(js, result, "value", entry); js_set(js, result, "done", js_mkfalse()); js_set(js, this_val, "__idx", js_mknum(idx + 1)); } return result; } static jsval_t map_entries(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t this_val = js->this_val; map_entry_t **map_ptr = get_map_from_obj(js, this_val); jsval_t keys = js_mkarr(js); jsval_t vals = js_mkarr(js); int count = 0; if (map_ptr && *map_ptr) { map_entry_t *entry, *tmp; HASH_ITER(hh, *map_ptr, entry, tmp) { js_arr_push(js, keys, js_mkstr(js, entry->key, strlen(entry->key))); js_arr_push(js, vals, entry->value); count++; } } jsval_t iter = js_mkobj(js); js_set(js, iter, "__keys", keys); js_set(js, iter, "__vals", vals); js_set(js, iter, "__idx", js_mknum(0)); js_set(js, iter, "__len", js_mknum(count)); js_set(js, iter, "next", js_mkfun(map_iter_next)); return iter; } static jsval_t set_iter_next(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t this_val = js->this_val; jsval_t idx_val = js_get(js, this_val, "__idx"); jsval_t vals = js_get(js, this_val, "__vals"); jsval_t len_val = js_get(js, this_val, "__len"); int idx = (int)js_getnum(idx_val); int len = (int)js_getnum(len_val); jsval_t result = js_mkobj(js); if (idx >= len) { js_set(js, result, "done", js_mktrue()); js_set(js, result, "value", js_mkundef()); } else { char idxstr[16]; uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t v = js_get(js, vals, idxstr); js_set(js, result, "value", v); js_set(js, result, "done", js_mkfalse()); js_set(js, this_val, "__idx", js_mknum(idx + 1)); } return result; } static jsval_t set_values(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t this_val = js->this_val; set_entry_t **set_ptr = get_set_from_obj(js, this_val); jsval_t vals = js_mkarr(js); int count = 0; if (set_ptr && *set_ptr) { set_entry_t *entry, *tmp; HASH_ITER(hh, *set_ptr, entry, tmp) { js_arr_push(js, vals, entry->value); count++; } } jsval_t iter = js_mkobj(js); js_set(js, iter, "__vals", vals); js_set(js, iter, "__idx", js_mknum(0)); js_set(js, iter, "__len", js_mknum(count)); js_set(js, iter, "next", js_mkfun(set_iter_next)); return iter; } static jsval_t set_add(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Set.add() requires 1 argument"); jsval_t this_val = js->this_val; set_entry_t **set_ptr = get_set_from_obj(js, this_val); if (!set_ptr) return js_mkerr(js, "Invalid Set object"); const char *key_str = jsval_to_key(js, args[0]); set_entry_t *entry; HASH_FIND_STR(*set_ptr, key_str, entry); if (!entry) { entry = (set_entry_t *)ANT_GC_MALLOC(sizeof(set_entry_t)); if (!entry) return js_mkerr(js, "out of memory"); entry->value = args[0]; entry->key = strdup(key_str); HASH_ADD_KEYPTR(hh, *set_ptr, entry->key, strlen(entry->key), entry); } return this_val; } static jsval_t set_has(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Set.has() requires 1 argument"); jsval_t this_val = js->this_val; set_entry_t **set_ptr = get_set_from_obj(js, this_val); if (!set_ptr) return mkval(T_BOOL, 0); const char *key_str = jsval_to_key(js, args[0]); set_entry_t *entry; HASH_FIND_STR(*set_ptr, key_str, entry); return mkval(T_BOOL, entry ? 1 : 0); } static jsval_t set_delete(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "Set.delete() requires 1 argument"); jsval_t this_val = js->this_val; set_entry_t **set_ptr = get_set_from_obj(js, this_val); if (!set_ptr) return mkval(T_BOOL, 0); const char *key_str = jsval_to_key(js, args[0]); set_entry_t *entry; HASH_FIND_STR(*set_ptr, key_str, entry); if (entry) { HASH_DEL(*set_ptr, entry); free(entry->key); ANT_GC_FREE(entry); return mkval(T_BOOL, 1); } return mkval(T_BOOL, 0); } static jsval_t set_clear(struct js *js, jsval_t *args, int nargs) { jsval_t this_val = js->this_val; set_entry_t **set_ptr = get_set_from_obj(js, this_val); if (!set_ptr) return js_mkundef(); set_entry_t *entry, *tmp; HASH_ITER(hh, *set_ptr, entry, tmp) { HASH_DEL(*set_ptr, entry); free(entry->key); ANT_GC_FREE(entry); } *set_ptr = NULL; return js_mkundef(); } static jsval_t set_size(struct js *js, jsval_t *args, int nargs) { jsval_t this_val = js->this_val; set_entry_t **set_ptr = get_set_from_obj(js, this_val); if (!set_ptr) return tov(0); size_t count = HASH_COUNT(*set_ptr); return tov((double)count); } static jsval_t builtin_WeakMap(struct js *js, jsval_t *args, int nargs) { jsval_t wm_obj = mkobj(js, 0); jsval_t wm_proto = get_ctor_proto(js, "WeakMap", 7); if (vtype(wm_proto) == T_OBJ) set_proto(js, wm_obj, wm_proto); weakmap_entry_t **wm_head = (weakmap_entry_t **)ANT_GC_MALLOC(sizeof(weakmap_entry_t *)); if (!wm_head) return js_mkerr(js, "out of memory"); *wm_head = NULL; jsval_t wm_ptr = mkval(T_NUM, (size_t)wm_head); jsval_t wm_key = js_mkstr(js, "__weakmap", 9); setprop(js, wm_obj, wm_key, wm_ptr); if (nargs == 0 || vtype(args[0]) != T_ARR) return wm_obj; jsval_t iterable = args[0]; jsoff_t length = arr_length(js, iterable); for (jsoff_t i = 0; i < length; i++) { jsval_t entry = arr_get(js, iterable, i); if (vtype(entry) != T_ARR) continue; jsoff_t entry_len = arr_length(js, entry); if (entry_len < 2) continue; jsval_t key = arr_get(js, entry, 0); jsval_t value = arr_get(js, entry, 1); if (vtype(key) != T_OBJ) return js_mkerr(js, "WeakMap key must be an object"); weakmap_entry_t *wm_entry; HASH_FIND(hh, *wm_head, &key, sizeof(jsval_t), wm_entry); if (wm_entry) { wm_entry->value = value; continue; } wm_entry = (weakmap_entry_t *)ANT_GC_MALLOC(sizeof(weakmap_entry_t)); if (!wm_entry) return js_mkerr(js, "out of memory"); wm_entry->key_obj = key; wm_entry->value = value; HASH_ADD(hh, *wm_head, key_obj, sizeof(jsval_t), wm_entry); } return wm_obj; } static jsval_t builtin_WeakSet(struct js *js, jsval_t *args, int nargs) { jsval_t ws_obj = mkobj(js, 0); jsval_t ws_proto = get_ctor_proto(js, "WeakSet", 7); if (vtype(ws_proto) == T_OBJ) set_proto(js, ws_obj, ws_proto); weakset_entry_t **ws_head = (weakset_entry_t **)ANT_GC_MALLOC(sizeof(weakset_entry_t *)); if (!ws_head) return js_mkerr(js, "out of memory"); *ws_head = NULL; jsval_t ws_ptr = mkval(T_NUM, (size_t)ws_head); jsval_t ws_key = js_mkstr(js, "__weakset", 9); setprop(js, ws_obj, ws_key, ws_ptr); if (nargs == 0 || vtype(args[0]) != T_ARR) return ws_obj; jsval_t iterable = args[0]; jsoff_t length = arr_length(js, iterable); for (jsoff_t i = 0; i < length; i++) { jsval_t value = arr_get(js, iterable, i); if (vtype(value) != T_OBJ) return js_mkerr(js, "WeakSet value must be an object"); weakset_entry_t *entry; HASH_FIND(hh, *ws_head, &value, sizeof(jsval_t), entry); if (entry) continue; entry = (weakset_entry_t *)ANT_GC_MALLOC(sizeof(weakset_entry_t)); if (!entry) return js_mkerr(js, "out of memory"); entry->value_obj = value; HASH_ADD(hh, *ws_head, value_obj, sizeof(jsval_t), entry); } return ws_obj; } static proxy_data_t *get_proxy_data(jsval_t obj) { if (vtype(obj) != T_OBJ) return NULL; jsoff_t off = (jsoff_t)vdata(obj); proxy_data_t *data = NULL; HASH_FIND(hh, proxy_registry, &off, sizeof(jsoff_t), data); return data; } static bool is_proxy(struct js *js, jsval_t obj) { (void)js; return get_proxy_data(obj) != NULL; } static jsval_t throw_proxy_error(struct js *js, const char *message) { jsval_t err_obj = mkobj(js, 0); setprop(js, err_obj, js_mkstr(js, "message", 7), js_mkstr(js, message, strlen(message))); setprop(js, err_obj, js_mkstr(js, "name", 4), js_mkstr(js, "TypeError", 9)); return js_throw(js, err_obj); } static jsval_t proxy_get(struct js *js, jsval_t proxy, const char *key, size_t key_len) { proxy_data_t *data = get_proxy_data(proxy); if (!data) return js_mkundef(); if (data->revoked) return throw_proxy_error(js, "Cannot perform 'get' on a proxy that has been revoked"); jsval_t target = data->target; jsval_t handler = data->handler; jsoff_t get_trap_off = vtype(handler) == T_OBJ ? lkp_interned(js, handler, INTERN_GET, 3) : 0; if (get_trap_off != 0) { jsval_t get_trap = resolveprop(js, mkval(T_PROP, get_trap_off)); if (vtype(get_trap) == T_FUNC || vtype(get_trap) == T_CFUNC) { jsval_t key_val = js_mkstr(js, key, key_len); jsval_t args[3] = { target, key_val, proxy }; return js_call(js, get_trap, args, 3); } } char key_buf[256]; size_t len = key_len < sizeof(key_buf) - 1 ? key_len : sizeof(key_buf) - 1; memcpy(key_buf, key, len); key_buf[len] = '\0'; jsoff_t off = lkp(js, target, key_buf, len); if (off != 0) return resolveprop(js, mkval(T_PROP, off)); jsoff_t proto_off = lkp_proto(js, target, key_buf, len); if (proto_off != 0) return resolveprop(js, mkval(T_PROP, proto_off)); return js_mkundef(); } static jsval_t proxy_set(struct js *js, jsval_t proxy, const char *key, size_t key_len, jsval_t value) { proxy_data_t *data = get_proxy_data(proxy); if (!data) return js_mkundef(); if (data->revoked) return throw_proxy_error(js, "Cannot perform 'set' on a proxy that has been revoked"); jsval_t target = data->target; jsval_t handler = data->handler; jsoff_t set_trap_off = vtype(handler) == T_OBJ ? lkp_interned(js, handler, INTERN_SET, 3) : 0; if (set_trap_off != 0) { jsval_t set_trap = resolveprop(js, mkval(T_PROP, set_trap_off)); if (vtype(set_trap) == T_FUNC || vtype(set_trap) == T_CFUNC) { jsval_t key_val = js_mkstr(js, key, key_len); jsval_t args[4] = { target, key_val, value, proxy }; jsval_t result = js_call(js, set_trap, args, 4); if (is_err(result)) return result; return js_mktrue(); } } jsval_t key_str = js_mkstr(js, key, key_len); setprop(js, target, key_str, value); return js_mktrue(); } static jsval_t proxy_has(struct js *js, jsval_t proxy, const char *key, size_t key_len) { proxy_data_t *data = get_proxy_data(proxy); if (!data) return js_mkfalse(); if (data->revoked) return throw_proxy_error(js, "Cannot perform 'has' on a proxy that has been revoked"); jsval_t target = data->target; jsval_t handler = data->handler; jsoff_t has_trap_off = vtype(handler) == T_OBJ ? lkp(js, handler, "has", 3) : 0; if (has_trap_off != 0) { jsval_t has_trap = resolveprop(js, mkval(T_PROP, has_trap_off)); if (vtype(has_trap) == T_FUNC || vtype(has_trap) == T_CFUNC) { jsval_t key_val = js_mkstr(js, key, key_len); jsval_t args[2] = { target, key_val }; return js_call(js, has_trap, args, 2); } } char key_buf[256]; size_t len = key_len < sizeof(key_buf) - 1 ? key_len : sizeof(key_buf) - 1; memcpy(key_buf, key, len); key_buf[len] = '\0'; jsoff_t off = lkp_proto(js, target, key_buf, len); return off != 0 ? js_mktrue() : js_mkfalse(); } static jsval_t proxy_delete(struct js *js, jsval_t proxy, const char *key, size_t key_len) { proxy_data_t *data = get_proxy_data(proxy); if (!data) return js_mktrue(); if (data->revoked) return throw_proxy_error(js, "Cannot perform 'deleteProperty' on a proxy that has been revoked"); jsval_t target = data->target; jsval_t handler = data->handler; jsoff_t delete_trap_off = vtype(handler) == T_OBJ ? lkp(js, handler, "deleteProperty", 14) : 0; if (delete_trap_off != 0) { jsval_t delete_trap = resolveprop(js, mkval(T_PROP, delete_trap_off)); if (vtype(delete_trap) == T_FUNC || vtype(delete_trap) == T_CFUNC) { jsval_t key_val = js_mkstr(js, key, key_len); jsval_t args[2] = { target, key_val }; return js_call(js, delete_trap, args, 2); } } jsval_t key_str = js_mkstr(js, key, key_len); setprop(js, target, key_str, js_mkundef()); return js_mktrue(); } static jsval_t mkproxy(struct js *js, jsval_t target, jsval_t handler) { jsval_t proxy_obj = mkobj(js, 0); jsoff_t off = (jsoff_t)vdata(proxy_obj); proxy_data_t *data = (proxy_data_t *)ANT_GC_MALLOC(sizeof(proxy_data_t)); if (!data) return js_mkerr(js, "out of memory"); data->obj_offset = off; data->target = target; data->handler = handler; data->revoked = false; HASH_ADD(hh, proxy_registry, obj_offset, sizeof(jsoff_t), data); return proxy_obj; } static jsval_t builtin_Proxy(struct js *js, jsval_t *args, int nargs) { if (nargs < 2) return js_mkerr(js, "Proxy requires two arguments: target and handler"); jsval_t target = args[0]; jsval_t handler = args[1]; uint8_t target_type = vtype(target); if (target_type != T_OBJ && target_type != T_FUNC && target_type != T_ARR) { return js_mkerr(js, "Proxy target must be an object"); } uint8_t handler_type = vtype(handler); if (handler_type != T_OBJ && handler_type != T_FUNC) { return js_mkerr(js, "Proxy handler must be an object"); } return mkproxy(js, target, handler); } static jsval_t proxy_revoke_fn(struct js *js, jsval_t *args, int nargs) { (void)args; (void)nargs; jsval_t func = js->current_func; jsoff_t ref_off = lkp(js, func, "__proxy_ref__", 13); if (ref_off != 0) { jsval_t proxy = resolveprop(js, mkval(T_PROP, ref_off)); proxy_data_t *data = get_proxy_data(proxy); if (data) data->revoked = true; } return js_mkundef(); } static jsval_t builtin_Proxy_revocable(struct js *js, jsval_t *args, int nargs) { jsval_t proxy = builtin_Proxy(js, args, nargs); if (is_err(proxy)) return proxy; jsval_t revoke_obj = mkobj(js, 0); setprop(js, revoke_obj, js_mkstr(js, "__native_func", 13), js_mkfun(proxy_revoke_fn)); setprop(js, revoke_obj, js_mkstr(js, "__proxy_ref__", 13), proxy); jsval_t revoke_func = mkval(T_FUNC, vdata(revoke_obj)); jsval_t result = mkobj(js, 0); setprop(js, result, js_mkstr(js, "proxy", 5), proxy); setprop(js, result, js_mkstr(js, "revoke", 6), revoke_func); return result; } static weakmap_entry_t** get_weakmap_from_obj(struct js *js, jsval_t obj) { jsoff_t wm_off = lkp(js, obj, "__weakmap", 9); if (wm_off == 0) return NULL; jsval_t wm_val = resolveprop(js, mkval(T_PROP, wm_off)); if (vtype(wm_val) != T_NUM) return NULL; return (weakmap_entry_t**)(size_t)vdata(wm_val); } static weakset_entry_t** get_weakset_from_obj(struct js *js, jsval_t obj) { jsoff_t ws_off = lkp(js, obj, "__weakset", 9); if (ws_off == 0) return NULL; jsval_t ws_val = resolveprop(js, mkval(T_PROP, ws_off)); if (vtype(ws_val) != T_NUM) return NULL; return (weakset_entry_t**)(size_t)vdata(ws_val); } static jsval_t weakmap_set(struct js *js, jsval_t *args, int nargs) { if (nargs < 2) return js_mkerr(js, "WeakMap.set() requires 2 arguments"); jsval_t this_val = js->this_val; weakmap_entry_t **wm_ptr = get_weakmap_from_obj(js, this_val); if (!wm_ptr) return js_mkerr(js, "Invalid WeakMap object"); if (vtype(args[0]) != T_OBJ) { return js_mkerr(js, "WeakMap key must be an object"); } jsval_t key_obj = args[0]; weakmap_entry_t *entry; HASH_FIND(hh, *wm_ptr, &key_obj, sizeof(jsval_t), entry); if (entry) { entry->value = args[1]; } else { entry = (weakmap_entry_t *)ANT_GC_MALLOC(sizeof(weakmap_entry_t)); if (!entry) return js_mkerr(js, "out of memory"); entry->key_obj = key_obj; entry->value = args[1]; HASH_ADD(hh, *wm_ptr, key_obj, sizeof(jsval_t), entry); } return this_val; } static jsval_t weakmap_get(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "WeakMap.get() requires 1 argument"); jsval_t this_val = js->this_val; weakmap_entry_t **wm_ptr = get_weakmap_from_obj(js, this_val); if (!wm_ptr) return js_mkundef(); if (vtype(args[0]) != T_OBJ) return js_mkundef(); jsval_t key_obj = args[0]; weakmap_entry_t *entry; HASH_FIND(hh, *wm_ptr, &key_obj, sizeof(jsval_t), entry); return entry ? entry->value : js_mkundef(); } static jsval_t weakmap_has(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "WeakMap.has() requires 1 argument"); jsval_t this_val = js->this_val; weakmap_entry_t **wm_ptr = get_weakmap_from_obj(js, this_val); if (!wm_ptr) return mkval(T_BOOL, 0); if (vtype(args[0]) != T_OBJ) return mkval(T_BOOL, 0); jsval_t key_obj = args[0]; weakmap_entry_t *entry; HASH_FIND(hh, *wm_ptr, &key_obj, sizeof(jsval_t), entry); return mkval(T_BOOL, entry ? 1 : 0); } static jsval_t weakmap_delete(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "WeakMap.delete() requires 1 argument"); jsval_t this_val = js->this_val; weakmap_entry_t **wm_ptr = get_weakmap_from_obj(js, this_val); if (!wm_ptr) return mkval(T_BOOL, 0); if (vtype(args[0]) != T_OBJ) return mkval(T_BOOL, 0); jsval_t key_obj = args[0]; weakmap_entry_t *entry; HASH_FIND(hh, *wm_ptr, &key_obj, sizeof(jsval_t), entry); if (entry) { HASH_DEL(*wm_ptr, entry); ANT_GC_FREE(entry); return mkval(T_BOOL, 1); } return mkval(T_BOOL, 0); } static jsval_t weakset_add(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "WeakSet.add() requires 1 argument"); jsval_t this_val = js->this_val; weakset_entry_t **ws_ptr = get_weakset_from_obj(js, this_val); if (!ws_ptr) return js_mkerr(js, "Invalid WeakSet object"); if (vtype(args[0]) != T_OBJ) { return js_mkerr(js, "WeakSet value must be an object"); } jsval_t value_obj = args[0]; weakset_entry_t *entry; HASH_FIND(hh, *ws_ptr, &value_obj, sizeof(jsval_t), entry); if (!entry) { entry = (weakset_entry_t *)ANT_GC_MALLOC(sizeof(weakset_entry_t)); if (!entry) return js_mkerr(js, "out of memory"); entry->value_obj = value_obj; HASH_ADD(hh, *ws_ptr, value_obj, sizeof(jsval_t), entry); } return this_val; } static jsval_t weakset_has(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "WeakSet.has() requires 1 argument"); jsval_t this_val = js->this_val; weakset_entry_t **ws_ptr = get_weakset_from_obj(js, this_val); if (!ws_ptr) return mkval(T_BOOL, 0); if (vtype(args[0]) != T_OBJ) return mkval(T_BOOL, 0); jsval_t value_obj = args[0]; weakset_entry_t *entry; HASH_FIND(hh, *ws_ptr, &value_obj, sizeof(jsval_t), entry); return mkval(T_BOOL, entry ? 1 : 0); } static jsval_t weakset_delete(struct js *js, jsval_t *args, int nargs) { if (nargs < 1) return js_mkerr(js, "WeakSet.delete() requires 1 argument"); jsval_t this_val = js->this_val; weakset_entry_t **ws_ptr = get_weakset_from_obj(js, this_val); if (!ws_ptr) return mkval(T_BOOL, 0); if (vtype(args[0]) != T_OBJ) return mkval(T_BOOL, 0); jsval_t value_obj = args[0]; weakset_entry_t *entry; HASH_FIND(hh, *ws_ptr, &value_obj, sizeof(jsval_t), entry); if (entry) { HASH_DEL(*ws_ptr, entry); ANT_GC_FREE(entry); return mkval(T_BOOL, 1); } return mkval(T_BOOL, 0); } struct js *js_create(void *buf, size_t len) { ANT_GC_INIT(); init_free_list(); intern_init(); struct js *js = NULL; if (len < sizeof(*js) + esize(T_OBJ)) return js; memset(buf, 0, len); js = (struct js *) buf; js->mem = (uint8_t *) (js + 1); js->size = (jsoff_t) (len - sizeof(*js)); js->scope = mkobj(js, 0); js->size = js->size / 8U * 8U; js->lwm = js->size; js->gct = js->size / 2; js->this_val = js->scope; js->errmsg_size = 4096; js->errmsg = (char *)malloc(js->errmsg_size); if (js->errmsg) js->errmsg[0] = '\0'; jsval_t glob = js->scope; jsval_t object_proto = js_mkobj(js); setprop(js, object_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_object_toString)); setprop(js, object_proto, js_mkstr(js, "valueOf", 7), js_mkfun(builtin_object_valueOf)); setprop(js, object_proto, js_mkstr(js, "toLocaleString", 14), js_mkfun(builtin_object_toLocaleString)); setprop(js, object_proto, js_mkstr(js, "hasOwnProperty", 14), js_mkfun(builtin_object_hasOwnProperty)); setprop(js, object_proto, js_mkstr(js, "isPrototypeOf", 13), js_mkfun(builtin_object_isPrototypeOf)); setprop(js, object_proto, js_mkstr(js, "propertyIsEnumerable", 20), js_mkfun(builtin_object_propertyIsEnumerable)); jsval_t function_proto = js_mkobj(js); set_proto(js, function_proto, object_proto); setprop(js, function_proto, js_mkstr(js, "call", 4), js_mkfun(builtin_function_call)); setprop(js, function_proto, js_mkstr(js, "apply", 5), js_mkfun(builtin_function_apply)); setprop(js, function_proto, js_mkstr(js, "bind", 4), js_mkfun(builtin_function_bind)); jsval_t array_proto = js_mkobj(js); set_proto(js, array_proto, object_proto); setprop(js, array_proto, js_mkstr(js, "push", 4), js_mkfun(builtin_array_push)); setprop(js, array_proto, js_mkstr(js, "pop", 3), js_mkfun(builtin_array_pop)); setprop(js, array_proto, js_mkstr(js, "slice", 5), js_mkfun(builtin_array_slice)); setprop(js, array_proto, js_mkstr(js, "join", 4), js_mkfun(builtin_array_join)); setprop(js, array_proto, js_mkstr(js, "includes", 8), js_mkfun(builtin_array_includes)); setprop(js, array_proto, js_mkstr(js, "every", 5), js_mkfun(builtin_array_every)); setprop(js, array_proto, js_mkstr(js, "reverse", 7), js_mkfun(builtin_array_reverse)); setprop(js, array_proto, js_mkstr(js, "map", 3), js_mkfun(builtin_array_map)); setprop(js, array_proto, js_mkstr(js, "filter", 6), js_mkfun(builtin_array_filter)); setprop(js, array_proto, js_mkstr(js, "reduce", 6), js_mkfun(builtin_array_reduce)); setprop(js, array_proto, js_mkstr(js, "flat", 4), js_mkfun(builtin_array_flat)); setprop(js, array_proto, js_mkstr(js, "concat", 6), js_mkfun(builtin_array_concat)); setprop(js, array_proto, js_mkstr(js, "at", 2), js_mkfun(builtin_array_at)); setprop(js, array_proto, js_mkstr(js, "fill", 4), js_mkfun(builtin_array_fill)); setprop(js, array_proto, js_mkstr(js, "find", 4), js_mkfun(builtin_array_find)); setprop(js, array_proto, js_mkstr(js, "findIndex", 9), js_mkfun(builtin_array_findIndex)); setprop(js, array_proto, js_mkstr(js, "findLast", 8), js_mkfun(builtin_array_findLast)); setprop(js, array_proto, js_mkstr(js, "findLastIndex", 13), js_mkfun(builtin_array_findLastIndex)); setprop(js, array_proto, js_mkstr(js, "flatMap", 7), js_mkfun(builtin_array_flatMap)); setprop(js, array_proto, js_mkstr(js, "forEach", 7), js_mkfun(builtin_array_forEach)); setprop(js, array_proto, js_mkstr(js, "indexOf", 7), js_mkfun(builtin_array_indexOf)); setprop(js, array_proto, js_mkstr(js, "lastIndexOf", 11), js_mkfun(builtin_array_lastIndexOf)); setprop(js, array_proto, js_mkstr(js, "reduceRight", 11), js_mkfun(builtin_array_reduceRight)); setprop(js, array_proto, js_mkstr(js, "shift", 5), js_mkfun(builtin_array_shift)); setprop(js, array_proto, js_mkstr(js, "unshift", 7), js_mkfun(builtin_array_unshift)); setprop(js, array_proto, js_mkstr(js, "some", 4), js_mkfun(builtin_array_some)); setprop(js, array_proto, js_mkstr(js, "sort", 4), js_mkfun(builtin_array_sort)); setprop(js, array_proto, js_mkstr(js, "splice", 6), js_mkfun(builtin_array_splice)); setprop(js, array_proto, js_mkstr(js, "copyWithin", 10), js_mkfun(builtin_array_copyWithin)); setprop(js, array_proto, js_mkstr(js, "toReversed", 10), js_mkfun(builtin_array_toReversed)); setprop(js, array_proto, js_mkstr(js, "toSorted", 8), js_mkfun(builtin_array_toSorted)); setprop(js, array_proto, js_mkstr(js, "toSpliced", 9), js_mkfun(builtin_array_toSpliced)); setprop(js, array_proto, js_mkstr(js, "with", 4), js_mkfun(builtin_array_with)); setprop(js, array_proto, js_mkstr(js, "keys", 4), js_mkfun(builtin_array_keys)); setprop(js, array_proto, js_mkstr(js, "values", 6), js_mkfun(builtin_array_values)); setprop(js, array_proto, js_mkstr(js, "entries", 7), js_mkfun(builtin_array_entries)); setprop(js, array_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_array_toString)); setprop(js, array_proto, js_mkstr(js, "toLocaleString", 14), js_mkfun(builtin_array_toLocaleString)); jsval_t string_proto = js_mkobj(js); set_proto(js, string_proto, object_proto); setprop(js, string_proto, js_mkstr(js, "indexOf", 7), js_mkfun(builtin_string_indexOf)); setprop(js, string_proto, js_mkstr(js, "substring", 9), js_mkfun(builtin_string_substring)); setprop(js, string_proto, js_mkstr(js, "substr", 6), js_mkfun(builtin_string_substr)); setprop(js, string_proto, js_mkstr(js, "split", 5), js_mkfun(builtin_string_split)); setprop(js, string_proto, js_mkstr(js, "slice", 5), js_mkfun(builtin_string_slice)); setprop(js, string_proto, js_mkstr(js, "includes", 8), js_mkfun(builtin_string_includes)); setprop(js, string_proto, js_mkstr(js, "startsWith", 10), js_mkfun(builtin_string_startsWith)); setprop(js, string_proto, js_mkstr(js, "endsWith", 8), js_mkfun(builtin_string_endsWith)); setprop(js, string_proto, js_mkstr(js, "replace", 7), js_mkfun(builtin_string_replace)); setprop(js, string_proto, js_mkstr(js, "replaceAll", 10), js_mkfun(builtin_string_replaceAll)); setprop(js, string_proto, js_mkstr(js, "match", 5), js_mkfun(builtin_string_match)); setprop(js, string_proto, js_mkstr(js, "template", 8), js_mkfun(builtin_string_template)); setprop(js, string_proto, js_mkstr(js, "charCodeAt", 10), js_mkfun(builtin_string_charCodeAt)); setprop(js, string_proto, js_mkstr(js, "toLowerCase", 11), js_mkfun(builtin_string_toLowerCase)); setprop(js, string_proto, js_mkstr(js, "toUpperCase", 11), js_mkfun(builtin_string_toUpperCase)); setprop(js, string_proto, js_mkstr(js, "toLocaleLowerCase", 17), js_mkfun(builtin_string_toLowerCase)); setprop(js, string_proto, js_mkstr(js, "toLocaleUpperCase", 17), js_mkfun(builtin_string_toUpperCase)); setprop(js, string_proto, js_mkstr(js, "trim", 4), js_mkfun(builtin_string_trim)); setprop(js, string_proto, js_mkstr(js, "trimStart", 9), js_mkfun(builtin_string_trimStart)); setprop(js, string_proto, js_mkstr(js, "trimEnd", 7), js_mkfun(builtin_string_trimEnd)); setprop(js, string_proto, js_mkstr(js, "repeat", 6), js_mkfun(builtin_string_repeat)); setprop(js, string_proto, js_mkstr(js, "padStart", 8), js_mkfun(builtin_string_padStart)); setprop(js, string_proto, js_mkstr(js, "padEnd", 6), js_mkfun(builtin_string_padEnd)); setprop(js, string_proto, js_mkstr(js, "charAt", 6), js_mkfun(builtin_string_charAt)); setprop(js, string_proto, js_mkstr(js, "at", 2), js_mkfun(builtin_string_at)); setprop(js, string_proto, js_mkstr(js, "lastIndexOf", 11), js_mkfun(builtin_string_lastIndexOf)); setprop(js, string_proto, js_mkstr(js, "concat", 6), js_mkfun(builtin_string_concat)); setprop(js, string_proto, js_mkstr(js, "search", 6), js_mkfun(builtin_string_search)); setprop(js, string_proto, js_mkstr(js, "localeCompare", 13), js_mkfun(builtin_string_localeCompare)); setprop(js, string_proto, js_mkstr(js, "valueOf", 7), js_mkfun(builtin_string_valueOf)); setprop(js, string_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_string_toString)); jsval_t number_proto = js_mkobj(js); set_proto(js, number_proto, object_proto); setprop(js, number_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_number_toString)); setprop(js, number_proto, js_mkstr(js, "toFixed", 7), js_mkfun(builtin_number_toFixed)); setprop(js, number_proto, js_mkstr(js, "toPrecision", 11), js_mkfun(builtin_number_toPrecision)); setprop(js, number_proto, js_mkstr(js, "toExponential", 13), js_mkfun(builtin_number_toExponential)); setprop(js, number_proto, js_mkstr(js, "valueOf", 7), js_mkfun(builtin_number_valueOf)); setprop(js, number_proto, js_mkstr(js, "toLocaleString", 14), js_mkfun(builtin_number_toLocaleString)); jsval_t boolean_proto = js_mkobj(js); set_proto(js, boolean_proto, object_proto); setprop(js, boolean_proto, js_mkstr(js, "valueOf", 7), js_mkfun(builtin_boolean_valueOf)); setprop(js, boolean_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_boolean_toString)); jsval_t bigint_proto = js_mkobj(js); set_proto(js, bigint_proto, object_proto); setprop(js, bigint_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_bigint_toString)); jsval_t error_proto = js_mkobj(js); set_proto(js, error_proto, object_proto); setprop(js, error_proto, js_mkstr(js, "name", 4), js_mkstr(js, "Error", 5)); setprop(js, error_proto, js_mkstr(js, "message", 7), js_mkstr(js, "", 0)); jsval_t evalerror_proto = js_mkobj(js); set_proto(js, evalerror_proto, error_proto); setprop(js, evalerror_proto, js_mkstr(js, "name", 4), js_mkstr(js, "EvalError", 9)); jsval_t rangeerror_proto = js_mkobj(js); set_proto(js, rangeerror_proto, error_proto); setprop(js, rangeerror_proto, js_mkstr(js, "name", 4), js_mkstr(js, "RangeError", 10)); jsval_t referenceerror_proto = js_mkobj(js); set_proto(js, referenceerror_proto, error_proto); setprop(js, referenceerror_proto, js_mkstr(js, "name", 4), js_mkstr(js, "ReferenceError", 14)); jsval_t syntaxerror_proto = js_mkobj(js); set_proto(js, syntaxerror_proto, error_proto); setprop(js, syntaxerror_proto, js_mkstr(js, "name", 4), js_mkstr(js, "SyntaxError", 11)); jsval_t typeerror_proto = js_mkobj(js); set_proto(js, typeerror_proto, error_proto); setprop(js, typeerror_proto, js_mkstr(js, "name", 4), js_mkstr(js, "TypeError", 9)); jsval_t urierror_proto = js_mkobj(js); set_proto(js, urierror_proto, error_proto); setprop(js, urierror_proto, js_mkstr(js, "name", 4), js_mkstr(js, "URIError", 8)); jsval_t internalerror_proto = js_mkobj(js); set_proto(js, internalerror_proto, error_proto); setprop(js, internalerror_proto, js_mkstr(js, "name", 4), js_mkstr(js, "InternalError", 13)); jsval_t date_proto = js_mkobj(js); set_proto(js, date_proto, object_proto); setprop(js, date_proto, js_mkstr(js, "getTime", 7), js_mkfun(builtin_Date_getTime)); setprop(js, date_proto, js_mkstr(js, "getFullYear", 11), js_mkfun(builtin_Date_getFullYear)); setprop(js, date_proto, js_mkstr(js, "getMonth", 8), js_mkfun(builtin_Date_getMonth)); setprop(js, date_proto, js_mkstr(js, "getDate", 7), js_mkfun(builtin_Date_getDate)); setprop(js, date_proto, js_mkstr(js, "getHours", 8), js_mkfun(builtin_Date_getHours)); setprop(js, date_proto, js_mkstr(js, "getMinutes", 10), js_mkfun(builtin_Date_getMinutes)); setprop(js, date_proto, js_mkstr(js, "getSeconds", 10), js_mkfun(builtin_Date_getSeconds)); setprop(js, date_proto, js_mkstr(js, "getMilliseconds", 15), js_mkfun(builtin_Date_getMilliseconds)); setprop(js, date_proto, js_mkstr(js, "getDay", 6), js_mkfun(builtin_Date_getDay)); setprop(js, date_proto, js_mkstr(js, "getTimezoneOffset", 17), js_mkfun(builtin_Date_getTimezoneOffset)); setprop(js, date_proto, js_mkstr(js, "getUTCFullYear", 14), js_mkfun(builtin_Date_getUTCFullYear)); setprop(js, date_proto, js_mkstr(js, "getUTCMonth", 11), js_mkfun(builtin_Date_getUTCMonth)); setprop(js, date_proto, js_mkstr(js, "getUTCDate", 10), js_mkfun(builtin_Date_getUTCDate)); setprop(js, date_proto, js_mkstr(js, "getUTCHours", 11), js_mkfun(builtin_Date_getUTCHours)); setprop(js, date_proto, js_mkstr(js, "getUTCMinutes", 13), js_mkfun(builtin_Date_getUTCMinutes)); setprop(js, date_proto, js_mkstr(js, "getUTCSeconds", 13), js_mkfun(builtin_Date_getUTCSeconds)); setprop(js, date_proto, js_mkstr(js, "getUTCMilliseconds", 18), js_mkfun(builtin_Date_getUTCMilliseconds)); setprop(js, date_proto, js_mkstr(js, "getUTCDay", 9), js_mkfun(builtin_Date_getUTCDay)); setprop(js, date_proto, js_mkstr(js, "setTime", 7), js_mkfun(builtin_Date_setTime)); setprop(js, date_proto, js_mkstr(js, "setMilliseconds", 15), js_mkfun(builtin_Date_setMilliseconds)); setprop(js, date_proto, js_mkstr(js, "setSeconds", 10), js_mkfun(builtin_Date_setSeconds)); setprop(js, date_proto, js_mkstr(js, "setMinutes", 10), js_mkfun(builtin_Date_setMinutes)); setprop(js, date_proto, js_mkstr(js, "setHours", 8), js_mkfun(builtin_Date_setHours)); setprop(js, date_proto, js_mkstr(js, "setDate", 7), js_mkfun(builtin_Date_setDate)); setprop(js, date_proto, js_mkstr(js, "setMonth", 8), js_mkfun(builtin_Date_setMonth)); setprop(js, date_proto, js_mkstr(js, "setFullYear", 11), js_mkfun(builtin_Date_setFullYear)); setprop(js, date_proto, js_mkstr(js, "setUTCMilliseconds", 18), js_mkfun(builtin_Date_setUTCMilliseconds)); setprop(js, date_proto, js_mkstr(js, "setUTCSeconds", 13), js_mkfun(builtin_Date_setUTCSeconds)); setprop(js, date_proto, js_mkstr(js, "setUTCMinutes", 13), js_mkfun(builtin_Date_setUTCMinutes)); setprop(js, date_proto, js_mkstr(js, "setUTCHours", 11), js_mkfun(builtin_Date_setUTCHours)); setprop(js, date_proto, js_mkstr(js, "setUTCDate", 10), js_mkfun(builtin_Date_setUTCDate)); setprop(js, date_proto, js_mkstr(js, "setUTCMonth", 11), js_mkfun(builtin_Date_setUTCMonth)); setprop(js, date_proto, js_mkstr(js, "setUTCFullYear", 14), js_mkfun(builtin_Date_setUTCFullYear)); setprop(js, date_proto, js_mkstr(js, "valueOf", 7), js_mkfun(builtin_Date_valueOf)); setprop(js, date_proto, js_mkstr(js, "toISOString", 11), js_mkfun(builtin_Date_toISOString)); setprop(js, date_proto, js_mkstr(js, "toUTCString", 11), js_mkfun(builtin_Date_toUTCString)); setprop(js, date_proto, js_mkstr(js, "toGMTString", 11), js_mkfun(builtin_Date_toUTCString)); setprop(js, date_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_Date_toString)); setprop(js, date_proto, js_mkstr(js, "toDateString", 12), js_mkfun(builtin_Date_toDateString)); setprop(js, date_proto, js_mkstr(js, "toTimeString", 12), js_mkfun(builtin_Date_toTimeString)); setprop(js, date_proto, js_mkstr(js, "toLocaleDateString", 18), js_mkfun(builtin_Date_toLocaleDateString)); setprop(js, date_proto, js_mkstr(js, "toLocaleTimeString", 18), js_mkfun(builtin_Date_toLocaleTimeString)); setprop(js, date_proto, js_mkstr(js, "getYear", 7), js_mkfun(builtin_Date_getYear)); setprop(js, date_proto, js_mkstr(js, "setYear", 7), js_mkfun(builtin_Date_setYear)); setprop(js, date_proto, js_mkstr(js, "toJSON", 6), js_mkfun(builtin_Date_toJSON)); jsval_t regexp_proto = js_mkobj(js); set_proto(js, regexp_proto, object_proto); setprop(js, regexp_proto, js_mkstr(js, "test", 4), js_mkfun(builtin_regexp_test)); setprop(js, regexp_proto, js_mkstr(js, "exec", 4), js_mkfun(builtin_regexp_exec)); setprop(js, regexp_proto, js_mkstr(js, "toString", 8), js_mkfun(builtin_regexp_toString)); jsval_t map_proto = js_mkobj(js); set_proto(js, map_proto, object_proto); setprop(js, map_proto, js_mkstr(js, "set", 3), js_mkfun(map_set)); setprop(js, map_proto, js_mkstr(js, "get", 3), js_mkfun(map_get)); setprop(js, map_proto, js_mkstr(js, "has", 3), js_mkfun(map_has)); setprop(js, map_proto, js_mkstr(js, "delete", 6), js_mkfun(map_delete)); setprop(js, map_proto, js_mkstr(js, "clear", 5), js_mkfun(map_clear)); setprop(js, map_proto, js_mkstr(js, "size", 4), js_mkfun(map_size)); setprop(js, map_proto, js_mkstr(js, "entries", 7), js_mkfun(map_entries)); jsval_t set_proto_obj = js_mkobj(js); set_proto(js, set_proto_obj, object_proto); setprop(js, set_proto_obj, js_mkstr(js, "add", 3), js_mkfun(set_add)); setprop(js, set_proto_obj, js_mkstr(js, "has", 3), js_mkfun(set_has)); setprop(js, set_proto_obj, js_mkstr(js, "delete", 6), js_mkfun(set_delete)); setprop(js, set_proto_obj, js_mkstr(js, "clear", 5), js_mkfun(set_clear)); setprop(js, set_proto_obj, js_mkstr(js, "size", 4), js_mkfun(set_size)); setprop(js, set_proto_obj, js_mkstr(js, "values", 6), js_mkfun(set_values)); jsval_t weakmap_proto = js_mkobj(js); set_proto(js, weakmap_proto, object_proto); setprop(js, weakmap_proto, js_mkstr(js, "set", 3), js_mkfun(weakmap_set)); setprop(js, weakmap_proto, js_mkstr(js, "get", 3), js_mkfun(weakmap_get)); setprop(js, weakmap_proto, js_mkstr(js, "has", 3), js_mkfun(weakmap_has)); setprop(js, weakmap_proto, js_mkstr(js, "delete", 6), js_mkfun(weakmap_delete)); jsval_t weakset_proto = js_mkobj(js); set_proto(js, weakset_proto, object_proto); setprop(js, weakset_proto, js_mkstr(js, "add", 3), js_mkfun(weakset_add)); setprop(js, weakset_proto, js_mkstr(js, "has", 3), js_mkfun(weakset_has)); setprop(js, weakset_proto, js_mkstr(js, "delete", 6), js_mkfun(weakset_delete)); jsval_t promise_proto = js_mkobj(js); set_proto(js, promise_proto, object_proto); setprop(js, promise_proto, js_mkstr(js, "then", 4), js_mkfun(builtin_promise_then)); setprop(js, promise_proto, js_mkstr(js, "catch", 5), js_mkfun(builtin_promise_catch)); setprop(js, promise_proto, js_mkstr(js, "finally", 7), js_mkfun(builtin_promise_finally)); jsval_t obj_func_obj = mkobj(js, 0); set_proto(js, obj_func_obj, function_proto); setprop(js, obj_func_obj, js_mkstr(js, "__code", 6), js_mkstr(js, "__builtin_Object", 16)); setprop(js, obj_func_obj, js_mkstr(js, "keys", 4), js_mkfun(builtin_object_keys)); setprop(js, obj_func_obj, js_mkstr(js, "values", 6), js_mkfun(builtin_object_values)); setprop(js, obj_func_obj, js_mkstr(js, "entries", 7), js_mkfun(builtin_object_entries)); setprop(js, obj_func_obj, js_mkstr(js, "getPrototypeOf", 14), js_mkfun(builtin_object_getPrototypeOf)); setprop(js, obj_func_obj, js_mkstr(js, "setPrototypeOf", 14), js_mkfun(builtin_object_setPrototypeOf)); setprop(js, obj_func_obj, js_mkstr(js, "create", 6), js_mkfun(builtin_object_create)); setprop(js, obj_func_obj, js_mkstr(js, "hasOwn", 6), js_mkfun(builtin_object_hasOwn)); setprop(js, obj_func_obj, js_mkstr(js, "defineProperty", 14), js_mkfun(builtin_object_defineProperty)); setprop(js, obj_func_obj, js_mkstr(js, "defineProperties", 16), js_mkfun(builtin_object_defineProperties)); setprop(js, obj_func_obj, js_mkstr(js, "assign", 6), js_mkfun(builtin_object_assign)); setprop(js, obj_func_obj, js_mkstr(js, "freeze", 6), js_mkfun(builtin_object_freeze)); setprop(js, obj_func_obj, js_mkstr(js, "isFrozen", 8), js_mkfun(builtin_object_isFrozen)); setprop(js, obj_func_obj, js_mkstr(js, "seal", 4), js_mkfun(builtin_object_seal)); setprop(js, obj_func_obj, js_mkstr(js, "isSealed", 8), js_mkfun(builtin_object_isSealed)); setprop(js, obj_func_obj, js_mkstr(js, "fromEntries", 11), js_mkfun(builtin_object_fromEntries)); setprop(js, obj_func_obj, js_mkstr(js, "getOwnPropertyDescriptor", 24), js_mkfun(builtin_object_getOwnPropertyDescriptor)); setprop(js, obj_func_obj, js_mkstr(js, "getOwnPropertyNames", 19), js_mkfun(builtin_object_getOwnPropertyNames)); setprop(js, obj_func_obj, js_mkstr(js, "isExtensible", 12), js_mkfun(builtin_object_isExtensible)); setprop(js, obj_func_obj, js_mkstr(js, "preventExtensions", 17), js_mkfun(builtin_object_preventExtensions)); setprop_nonconfigurable(js, obj_func_obj, "prototype", 9, object_proto); setprop(js, glob, js_mkstr(js, "Object", 6), mkval(T_FUNC, vdata(obj_func_obj))); jsval_t func_ctor_obj = mkobj(js, 0); set_proto(js, func_ctor_obj, function_proto); setprop(js, func_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Function)); setprop_nonconfigurable(js, func_ctor_obj, "prototype", 9, function_proto); setprop(js, func_ctor_obj, js_mkstr(js, "length", 6), tov(1.0)); js_set_descriptor(js, func_ctor_obj, "length", 6, JS_DESC_C); setprop(js, glob, js_mkstr(js, "Function", 8), mkval(T_FUNC, vdata(func_ctor_obj))); jsval_t str_ctor_obj = mkobj(js, 0); set_proto(js, str_ctor_obj, function_proto); setprop(js, str_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_String)); setprop_nonconfigurable(js, str_ctor_obj, "prototype", 9, string_proto); setprop(js, str_ctor_obj, js_mkstr(js, "fromCharCode", 12), js_mkfun(builtin_string_fromCharCode)); setprop(js, str_ctor_obj, js_mkstr(js, "fromCodePoint", 13), js_mkfun(builtin_string_fromCodePoint)); setprop(js, glob, js_mkstr(js, "String", 6), mkval(T_FUNC, vdata(str_ctor_obj))); jsval_t number_ctor_obj = mkobj(js, 0); set_proto(js, number_ctor_obj, function_proto); setprop(js, number_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Number)); setprop(js, number_ctor_obj, js_mkstr(js, "isNaN", 5), js_mkfun(builtin_Number_isNaN)); setprop(js, number_ctor_obj, js_mkstr(js, "isFinite", 8), js_mkfun(builtin_Number_isFinite)); setprop(js, number_ctor_obj, js_mkstr(js, "isInteger", 9), js_mkfun(builtin_Number_isInteger)); setprop(js, number_ctor_obj, js_mkstr(js, "isSafeInteger", 13), js_mkfun(builtin_Number_isSafeInteger)); setprop(js, number_ctor_obj, js_mkstr(js, "MAX_VALUE", 9), tov(1.7976931348623157e+308)); setprop(js, number_ctor_obj, js_mkstr(js, "MIN_VALUE", 9), tov(5e-324)); setprop(js, number_ctor_obj, js_mkstr(js, "MAX_SAFE_INTEGER", 16), tov(9007199254740991.0)); setprop(js, number_ctor_obj, js_mkstr(js, "MIN_SAFE_INTEGER", 16), tov(-9007199254740991.0)); setprop(js, number_ctor_obj, js_mkstr(js, "POSITIVE_INFINITY", 17), tov(INFINITY)); setprop(js, number_ctor_obj, js_mkstr(js, "NEGATIVE_INFINITY", 17), tov(-INFINITY)); setprop(js, number_ctor_obj, js_mkstr(js, "NaN", 3), tov(NAN)); setprop(js, number_ctor_obj, js_mkstr(js, "EPSILON", 7), tov(2.220446049250313e-16)); setprop_nonconfigurable(js, number_ctor_obj, "prototype", 9, number_proto); setprop(js, glob, js_mkstr(js, "Number", 6), mkval(T_FUNC, vdata(number_ctor_obj))); jsval_t bool_ctor_obj = mkobj(js, 0); set_proto(js, bool_ctor_obj, function_proto); setprop(js, bool_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Boolean)); setprop_nonconfigurable(js, bool_ctor_obj, "prototype", 9, boolean_proto); setprop(js, glob, js_mkstr(js, "Boolean", 7), mkval(T_FUNC, vdata(bool_ctor_obj))); jsval_t arr_ctor_obj = mkobj(js, 0); set_proto(js, arr_ctor_obj, function_proto); setprop(js, arr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Array)); setprop_nonconfigurable(js, arr_ctor_obj, "prototype", 9, array_proto); setprop(js, arr_ctor_obj, js_mkstr(js, "isArray", 7), js_mkfun(builtin_Array_isArray)); setprop(js, arr_ctor_obj, js_mkstr(js, "from", 4), js_mkfun(builtin_Array_from)); setprop(js, arr_ctor_obj, js_mkstr(js, "of", 2), js_mkfun(builtin_Array_of)); setprop(js, arr_ctor_obj, js_mkstr(js, "length", 6), tov(1.0)); js_set_descriptor(js, arr_ctor_obj, "length", 6, JS_DESC_C); setprop(js, glob, js_mkstr(js, "Array", 5), mkval(T_FUNC, vdata(arr_ctor_obj))); jsval_t map_ctor_obj = mkobj(js, 0); set_proto(js, map_ctor_obj, function_proto); setprop(js, map_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Map)); setprop_nonconfigurable(js, map_ctor_obj, "prototype", 9, map_proto); setprop(js, glob, js_mkstr(js, "Map", 3), mkval(T_FUNC, vdata(map_ctor_obj))); jsval_t set_ctor_obj = mkobj(js, 0); set_proto(js, set_ctor_obj, function_proto); setprop(js, set_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Set)); setprop_nonconfigurable(js, set_ctor_obj, "prototype", 9, set_proto_obj); setprop(js, glob, js_mkstr(js, "Set", 3), mkval(T_FUNC, vdata(set_ctor_obj))); jsval_t weakmap_ctor_obj = mkobj(js, 0); set_proto(js, weakmap_ctor_obj, function_proto); setprop(js, weakmap_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_WeakMap)); setprop_nonconfigurable(js, weakmap_ctor_obj, "prototype", 9, weakmap_proto); setprop(js, glob, js_mkstr(js, "WeakMap", 7), mkval(T_FUNC, vdata(weakmap_ctor_obj))); jsval_t weakset_ctor_obj = mkobj(js, 0); set_proto(js, weakset_ctor_obj, function_proto); setprop(js, weakset_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_WeakSet)); setprop_nonconfigurable(js, weakset_ctor_obj, "prototype", 9, weakset_proto); setprop(js, glob, js_mkstr(js, "WeakSet", 7), mkval(T_FUNC, vdata(weakset_ctor_obj))); jsval_t proxy_ctor_obj = mkobj(js, 0); set_proto(js, proxy_ctor_obj, function_proto); setprop(js, proxy_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Proxy)); setprop(js, proxy_ctor_obj, js_mkstr(js, "revocable", 9), js_mkfun(builtin_Proxy_revocable)); setprop(js, glob, js_mkstr(js, "Proxy", 5), mkval(T_FUNC, vdata(proxy_ctor_obj))); jsval_t err_ctor_obj = mkobj(js, 0); set_proto(js, err_ctor_obj, function_proto); setprop(js, err_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Error)); setprop_nonconfigurable(js, err_ctor_obj, "prototype", 9, error_proto); setprop(js, glob, js_mkstr(js, "Error", 5), mkval(T_FUNC, vdata(err_ctor_obj))); jsval_t evalerr_ctor_obj = mkobj(js, 0); set_proto(js, evalerr_ctor_obj, function_proto); setprop(js, evalerr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_EvalError)); setprop_nonconfigurable(js, evalerr_ctor_obj, "prototype", 9, evalerror_proto); setprop(js, glob, js_mkstr(js, "EvalError", 9), mkval(T_FUNC, vdata(evalerr_ctor_obj))); jsval_t rangeerr_ctor_obj = mkobj(js, 0); set_proto(js, rangeerr_ctor_obj, function_proto); setprop(js, rangeerr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_RangeError)); setprop_nonconfigurable(js, rangeerr_ctor_obj, "prototype", 9, rangeerror_proto); setprop(js, glob, js_mkstr(js, "RangeError", 10), mkval(T_FUNC, vdata(rangeerr_ctor_obj))); jsval_t referr_ctor_obj = mkobj(js, 0); set_proto(js, referr_ctor_obj, function_proto); setprop(js, referr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_ReferenceError)); setprop_nonconfigurable(js, referr_ctor_obj, "prototype", 9, referenceerror_proto); setprop(js, glob, js_mkstr(js, "ReferenceError", 14), mkval(T_FUNC, vdata(referr_ctor_obj))); jsval_t syntaxerr_ctor_obj = mkobj(js, 0); set_proto(js, syntaxerr_ctor_obj, function_proto); setprop(js, syntaxerr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_SyntaxError)); setprop_nonconfigurable(js, syntaxerr_ctor_obj, "prototype", 9, syntaxerror_proto); setprop(js, glob, js_mkstr(js, "SyntaxError", 11), mkval(T_FUNC, vdata(syntaxerr_ctor_obj))); jsval_t typeerr_ctor_obj = mkobj(js, 0); set_proto(js, typeerr_ctor_obj, function_proto); setprop(js, typeerr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_TypeError)); setprop_nonconfigurable(js, typeerr_ctor_obj, "prototype", 9, typeerror_proto); setprop(js, glob, js_mkstr(js, "TypeError", 9), mkval(T_FUNC, vdata(typeerr_ctor_obj))); jsval_t urierr_ctor_obj = mkobj(js, 0); set_proto(js, urierr_ctor_obj, function_proto); setprop(js, urierr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_URIError)); setprop_nonconfigurable(js, urierr_ctor_obj, "prototype", 9, urierror_proto); setprop(js, glob, js_mkstr(js, "URIError", 8), mkval(T_FUNC, vdata(urierr_ctor_obj))); jsval_t internerr_ctor_obj = mkobj(js, 0); set_proto(js, internerr_ctor_obj, function_proto); setprop(js, internerr_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_InternalError)); setprop_nonconfigurable(js, internerr_ctor_obj, "prototype", 9, internalerror_proto); setprop(js, glob, js_mkstr(js, "InternalError", 13), mkval(T_FUNC, vdata(internerr_ctor_obj))); jsval_t regex_ctor_obj = mkobj(js, 0); set_proto(js, regex_ctor_obj, function_proto); setprop(js, regex_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_RegExp)); setprop_nonconfigurable(js, regex_ctor_obj, "prototype", 9, regexp_proto); setprop(js, glob, js_mkstr(js, "RegExp", 6), mkval(T_FUNC, vdata(regex_ctor_obj))); jsval_t date_ctor_obj = mkobj(js, 0); set_proto(js, date_ctor_obj, function_proto); setprop(js, date_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Date)); setprop(js, date_ctor_obj, js_mkstr(js, "now", 3), js_mkfun(builtin_Date_now)); setprop(js, date_ctor_obj, js_mkstr(js, "UTC", 3), js_mkfun(builtin_Date_UTC)); setprop_nonconfigurable(js, date_ctor_obj, "prototype", 9, date_proto); setprop(js, glob, js_mkstr(js, "Date", 4), mkval(T_FUNC, vdata(date_ctor_obj))); jsval_t p_ctor_obj = mkobj(js, 0); set_proto(js, p_ctor_obj, function_proto); setprop(js, p_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_Promise)); setprop(js, p_ctor_obj, js_mkstr(js, "resolve", 7), js_mkfun(builtin_Promise_resolve)); setprop(js, p_ctor_obj, js_mkstr(js, "reject", 6), js_mkfun(builtin_Promise_reject)); setprop(js, p_ctor_obj, js_mkstr(js, "try", 3), js_mkfun(builtin_Promise_try)); setprop(js, p_ctor_obj, js_mkstr(js, "all", 3), js_mkfun(builtin_Promise_all)); setprop(js, p_ctor_obj, js_mkstr(js, "race", 4), js_mkfun(builtin_Promise_race)); setprop_nonconfigurable(js, p_ctor_obj, "prototype", 9, promise_proto); setprop(js, glob, js_mkstr(js, "Promise", 7), mkval(T_FUNC, vdata(p_ctor_obj))); jsval_t bigint_ctor_obj = mkobj(js, 0); set_proto(js, bigint_ctor_obj, function_proto); setprop(js, bigint_ctor_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_BigInt)); setprop(js, bigint_ctor_obj, js_mkstr(js, "asIntN", 6), js_mkfun(builtin_BigInt_asIntN)); setprop(js, bigint_ctor_obj, js_mkstr(js, "asUintN", 7), js_mkfun(builtin_BigInt_asUintN)); setprop_nonconfigurable(js, bigint_ctor_obj, "prototype", 9, bigint_proto); setprop(js, glob, js_mkstr(js, "BigInt", 6), mkval(T_FUNC, vdata(bigint_ctor_obj))); setprop(js, glob, js_mkstr(js, "eval", 4), js_mkfun(builtin_eval)); setprop(js, glob, js_mkstr(js, "parseInt", 8), js_mkfun(builtin_parseInt)); setprop(js, glob, js_mkstr(js, "parseFloat", 10), js_mkfun(builtin_parseFloat)); setprop(js, glob, js_mkstr(js, "isNaN", 5), js_mkfun(builtin_global_isNaN)); setprop(js, glob, js_mkstr(js, "isFinite", 8), js_mkfun(builtin_global_isFinite)); setprop(js, glob, js_mkstr(js, "btoa", 4), js_mkfun(builtin_btoa)); setprop(js, glob, js_mkstr(js, "atob", 4), js_mkfun(builtin_atob)); setprop(js, glob, js_mkstr(js, "NaN", 3), tov(NAN)); setprop(js, glob, js_mkstr(js, "Infinity", 8), tov(INFINITY)); setprop(js, glob, js_mkstr(js, "undefined", 9), js_mkundef()); jsval_t math_obj = mkobj(js, 0); set_proto(js, math_obj, object_proto); setprop(js, math_obj, js_mkstr(js, "E", 1), tov(M_E)); setprop(js, math_obj, js_mkstr(js, "LN10", 4), tov(M_LN10)); setprop(js, math_obj, js_mkstr(js, "LN2", 3), tov(M_LN2)); setprop(js, math_obj, js_mkstr(js, "LOG10E", 6), tov(M_LOG10E)); setprop(js, math_obj, js_mkstr(js, "LOG2E", 5), tov(M_LOG2E)); setprop(js, math_obj, js_mkstr(js, "PI", 2), tov(M_PI)); setprop(js, math_obj, js_mkstr(js, "SQRT1_2", 7), tov(M_SQRT1_2)); setprop(js, math_obj, js_mkstr(js, "SQRT2", 5), tov(M_SQRT2)); setprop(js, math_obj, js_mkstr(js, "abs", 3), js_mkfun(builtin_Math_abs)); setprop(js, math_obj, js_mkstr(js, "acos", 4), js_mkfun(builtin_Math_acos)); setprop(js, math_obj, js_mkstr(js, "acosh", 5), js_mkfun(builtin_Math_acosh)); setprop(js, math_obj, js_mkstr(js, "asin", 4), js_mkfun(builtin_Math_asin)); setprop(js, math_obj, js_mkstr(js, "asinh", 5), js_mkfun(builtin_Math_asinh)); setprop(js, math_obj, js_mkstr(js, "atan", 4), js_mkfun(builtin_Math_atan)); setprop(js, math_obj, js_mkstr(js, "atanh", 5), js_mkfun(builtin_Math_atanh)); setprop(js, math_obj, js_mkstr(js, "atan2", 5), js_mkfun(builtin_Math_atan2)); setprop(js, math_obj, js_mkstr(js, "cbrt", 4), js_mkfun(builtin_Math_cbrt)); setprop(js, math_obj, js_mkstr(js, "ceil", 4), js_mkfun(builtin_Math_ceil)); setprop(js, math_obj, js_mkstr(js, "clz32", 5), js_mkfun(builtin_Math_clz32)); setprop(js, math_obj, js_mkstr(js, "cos", 3), js_mkfun(builtin_Math_cos)); setprop(js, math_obj, js_mkstr(js, "cosh", 4), js_mkfun(builtin_Math_cosh)); setprop(js, math_obj, js_mkstr(js, "exp", 3), js_mkfun(builtin_Math_exp)); setprop(js, math_obj, js_mkstr(js, "expm1", 5), js_mkfun(builtin_Math_expm1)); setprop(js, math_obj, js_mkstr(js, "floor", 5), js_mkfun(builtin_Math_floor)); setprop(js, math_obj, js_mkstr(js, "fround", 6), js_mkfun(builtin_Math_fround)); setprop(js, math_obj, js_mkstr(js, "hypot", 5), js_mkfun(builtin_Math_hypot)); setprop(js, math_obj, js_mkstr(js, "imul", 4), js_mkfun(builtin_Math_imul)); setprop(js, math_obj, js_mkstr(js, "log", 3), js_mkfun(builtin_Math_log)); setprop(js, math_obj, js_mkstr(js, "log1p", 5), js_mkfun(builtin_Math_log1p)); setprop(js, math_obj, js_mkstr(js, "log10", 5), js_mkfun(builtin_Math_log10)); setprop(js, math_obj, js_mkstr(js, "log2", 4), js_mkfun(builtin_Math_log2)); setprop(js, math_obj, js_mkstr(js, "max", 3), js_mkfun(builtin_Math_max)); setprop(js, math_obj, js_mkstr(js, "min", 3), js_mkfun(builtin_Math_min)); setprop(js, math_obj, js_mkstr(js, "pow", 3), js_mkfun(builtin_Math_pow)); setprop(js, math_obj, js_mkstr(js, "random", 6), js_mkfun(builtin_Math_random)); setprop(js, math_obj, js_mkstr(js, "round", 5), js_mkfun(builtin_Math_round)); setprop(js, math_obj, js_mkstr(js, "sign", 4), js_mkfun(builtin_Math_sign)); setprop(js, math_obj, js_mkstr(js, "sin", 3), js_mkfun(builtin_Math_sin)); setprop(js, math_obj, js_mkstr(js, "sinh", 4), js_mkfun(builtin_Math_sinh)); setprop(js, math_obj, js_mkstr(js, "sqrt", 4), js_mkfun(builtin_Math_sqrt)); setprop(js, math_obj, js_mkstr(js, "tan", 3), js_mkfun(builtin_Math_tan)); setprop(js, math_obj, js_mkstr(js, "tanh", 4), js_mkfun(builtin_Math_tanh)); setprop(js, math_obj, js_mkstr(js, "trunc", 5), js_mkfun(builtin_Math_trunc)); setprop(js, glob, js_mkstr(js, "Math", 4), math_obj); jsval_t import_obj = mkobj(js, 0); set_proto(js, import_obj, function_proto); setprop(js, import_obj, js_mkstr(js, "__native_func", 13), js_mkfun(builtin_import)); setprop(js, glob, js_mkstr(js, "import", 6), mkval(T_FUNC, vdata(import_obj))); setprop(js, glob, js_mkstr(js, "__esm_module_scope", 18), js_mkundef()); setprop(js, object_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(obj_func_obj))); setprop(js, function_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(func_ctor_obj))); setprop(js, array_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(arr_ctor_obj))); setprop(js, string_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(str_ctor_obj))); setprop(js, number_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(number_ctor_obj))); setprop(js, boolean_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(bool_ctor_obj))); setprop(js, date_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(date_ctor_obj))); setprop(js, regexp_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(regex_ctor_obj))); setprop(js, error_proto, js_mkstr(js, "constructor", 11), mkval(T_FUNC, vdata(err_ctor_obj))); set_proto(js, glob, object_proto); js->owns_mem = false; js->max_size = 0; return js; } struct js *js_create_dynamic(size_t initial_size, size_t max_size) { if (initial_size < sizeof(struct js) + esize(T_OBJ)) initial_size = 1024 * 1024; if (max_size == 0 || max_size < initial_size) max_size = 512 * 1024 * 1024; void *buf = ANT_GC_MALLOC(initial_size); if (buf == NULL) return NULL; struct js *js = js_create(buf, initial_size); if (js == NULL) { ANT_GC_FREE(buf); return NULL; } js->owns_mem = true; js->max_size = (jsoff_t) max_size; return js; } void js_destroy(struct js *js) { if (js == NULL) return; esm_cleanup_module_cache(); if (js->errmsg) { free(js->errmsg); js->errmsg = NULL; } if (js->owns_mem) { ANT_GC_FREE((void *)((uint8_t *)js - 0)); } } double js_getnum(jsval_t value) { return tod(value); } int js_getbool(jsval_t value) { return vdata(value) & 1 ? 1 : 0; } void js_setgct(struct js *js, size_t gct) { js->gct = (jsoff_t) gct; } void js_setmaxcss(struct js *js, size_t max) { js->maxcss = (jsoff_t) max; } void js_set_filename(struct js *js, const char *filename) { js->filename = filename; } jsval_t js_mktrue(void) { return mkval(T_BOOL, 1); } jsval_t js_mkfalse(void) { return mkval(T_BOOL, 0); } jsval_t js_mkundef(void) { return mkval(T_UNDEF, 0); } jsval_t js_mknull(void) { return mkval(T_NULL, 0); } jsval_t js_mknum(double value) { return tov(value); } jsval_t js_mkobj(struct js *js) { return mkobj(js, 0); } jsval_t js_glob(struct js *js) { (void) js; return mkval(T_OBJ, 0); } jsval_t js_mkfun(jsval_t (*fn)(struct js *, jsval_t *, int)) { return mkval(T_CFUNC, (size_t) (void *) fn); } jsval_t js_getthis(struct js *js) { return js->this_val; } void js_setthis(struct js *js, jsval_t val) { js->this_val = val; } jsval_t js_getcurrentfunc(struct js *js) { return js->current_func; } void js_set(struct js *js, jsval_t obj, const char *key, jsval_t val) { size_t key_len = strlen(key); if (vtype(obj) == T_OBJ) { jsoff_t existing = lkp(js, obj, key, key_len); if (existing > 0) { if (is_const_prop(js, existing)) { if (js->flags & F_STRICT) js_mkerr(js, "assignment to constant"); return; } saveval(js, existing + sizeof(jsoff_t) * 2, val); } else { jsval_t key_str = js_mkstr(js, key, key_len); mkprop(js, obj, key_str, val, false); } } else if (vtype(obj) == T_FUNC) { jsval_t func_obj = mkval(T_OBJ, vdata(obj)); jsoff_t existing = lkp(js, func_obj, key, key_len); if (existing > 0) { if (is_const_prop(js, existing)) { if (js->flags & F_STRICT) js_mkerr(js, "assignment to constant"); return; } saveval(js, existing + sizeof(jsoff_t) * 2, val); } else { jsval_t key_str = js_mkstr(js, key, key_len); mkprop(js, func_obj, key_str, val, false); } } } bool js_del(struct js *js, jsval_t obj, const char *key) { size_t len = strlen(key); jsoff_t obj_off; if (vtype(obj) == T_OBJ) { obj_off = vdata(obj); } else if (vtype(obj) == T_ARR || vtype(obj) == T_FUNC) { obj_off = vdata(obj); obj = mkval(T_OBJ, obj_off); } else { return false; } jsoff_t prop_off = lkp(js, obj, key, len); if (prop_off == 0) return true; if (is_const_prop(js, prop_off)) return false; descriptor_entry_t *desc = lookup_descriptor(obj_off, key, len); if (desc && !desc->configurable) return false; jsoff_t first_prop = loadoff(js, obj_off) & ~(3U | CONSTMASK | GCMASK); if (first_prop == prop_off) { jsoff_t deleted_next = loadoff(js, prop_off) & ~(GCMASK | CONSTMASK); jsoff_t current = loadoff(js, obj_off); saveoff(js, obj_off, (deleted_next & ~3U) | (current & (GCMASK | CONSTMASK | 3U))); saveoff(js, prop_off, loadoff(js, prop_off) | GCMASK); invalidate_obj_cache(obj_off); invalidate_prop_cache_for_obj(obj_off); return true; } jsoff_t prev = first_prop; while (prev != 0) { jsoff_t next_prop = loadoff(js, prev) & ~(GCMASK | CONSTMASK); if (next_prop == prop_off) { jsoff_t deleted_next = loadoff(js, prop_off) & ~(GCMASK | CONSTMASK); jsoff_t prev_flags = loadoff(js, prev) & (GCMASK | CONSTMASK); saveoff(js, prev, deleted_next | prev_flags); saveoff(js, prop_off, loadoff(js, prop_off) | GCMASK); invalidate_obj_cache(obj_off); invalidate_prop_cache_for_obj(obj_off); return true; } prev = next_prop; } return false; } jsval_t js_get(struct js *js, jsval_t obj, const char *key) { size_t key_len = strlen(key); if (vtype(obj) == T_FUNC) { jsval_t func_obj = mkval(T_OBJ, vdata(obj)); jsoff_t off = lkp(js, func_obj, key, key_len); return off == 0 ? js_mkundef() : resolveprop(js, mkval(T_PROP, off)); } if (vtype(obj) == T_ARR) { jsval_t arr_obj = mkval(T_OBJ, vdata(obj)); jsoff_t off = lkp(js, arr_obj, key, key_len); return off == 0 ? js_mkundef() : resolveprop(js, mkval(T_PROP, off)); } if (vtype(obj) == T_PROMISE) { jsval_t prom_obj = mkval(T_OBJ, vdata(obj)); jsoff_t off = lkp(js, prom_obj, key, key_len); if (off != 0) return resolveprop(js, mkval(T_PROP, off)); jsval_t promise_proto = get_ctor_proto(js, "Promise", 7); if (vtype(promise_proto) != T_UNDEF && vtype(promise_proto) != T_NULL) { off = lkp(js, promise_proto, key, key_len); if (off != 0) return resolveprop(js, mkval(T_PROP, off)); } return js_mkundef(); } if (vtype(obj) != T_OBJ) return js_mkundef(); jsoff_t off = lkp(js, obj, key, key_len); if (off == 0) { jsval_t result = try_dynamic_getter(js, obj, key, key_len); if (vtype(result) != T_UNDEF) return result; } return off == 0 ? js_mkundef() : resolveprop(js, mkval(T_PROP, off)); } char *js_getstr(struct js *js, jsval_t value, size_t *len) { if (vtype(value) != T_STR) return NULL; jsoff_t n, off = vstr(js, value, &n); if (len != NULL) *len = n; return (char *) &js->mem[off]; } void js_merge_obj(struct js *js, jsval_t dst, jsval_t src) { if (vtype(dst) != T_OBJ || vtype(src) != T_OBJ) return; jsoff_t next = loadoff(js, (jsoff_t) vdata(src)) & ~(3U | CONSTMASK | ARRMASK); while (next < js->brk && next != 0) { jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); jsoff_t klen = offtolen(loadoff(js, koff)); char *key = (char *) &js->mem[koff + sizeof(koff)]; setprop(js, dst, js_mkstr(js, key, klen), val); next = loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK); } } int js_type(jsval_t val) { switch (vtype(val)) { case T_UNDEF: return JS_UNDEF; case T_NULL: return JS_NULL; case T_BOOL: return vdata(val) == 0 ? JS_FALSE: JS_TRUE; case T_STR: return JS_STR; case T_NUM: return JS_NUM; case T_ERR: return JS_ERR; case T_PROMISE: return JS_PROMISE; case T_SYMBOL: return JS_SYMBOL; case T_OBJ: case T_ARR: return JS_OBJ; case T_FUNC: return JS_FUNC; default: return JS_PRIV; } } int js_type_ex(struct js *js, jsval_t val) { (void)js; if (vtype(val) == T_SYMBOL) return JS_SYMBOL; return js_type(val); } void js_stats(struct js *js, size_t *total, size_t *lwm, size_t *css) { if (total) *total = js->size; if (lwm) *lwm = js->lwm; if (css) *css = js->css; } size_t js_getbrk(struct js *js) { return (size_t) js->brk; } bool js_chkargs(jsval_t *args, int nargs, const char *spec) { int i = 0, ok = 1; for (; ok && i < nargs && spec[i]; i++) { uint8_t t = vtype(args[i]), c = (uint8_t) spec[i]; ok = (c == 'b' && t == T_BOOL) || (c == 'd' && t == T_NUM) || (c == 's' && t == T_STR) || (c == 'j'); } if (spec[i] != '\0' || i != nargs) ok = 0; return ok; } static jsval_t js_eval_inherit_strict(struct js *js, const char *buf, size_t len, bool inherit_strict) { jsval_t res = js_mkundef(); if (len == (size_t) ~0U) len = strlen(buf); js->consumed = 1; js->tok = TOK_ERR; js->code = buf; js->clen = (jsoff_t) len; js->pos = 0; js->cstk = &res; uint8_t saved_tok = js->tok; jsoff_t saved_pos = js->pos; uint8_t saved_consumed = js->consumed; js->consumed = 1; bool is_strict = inherit_strict; if (inherit_strict) js->flags |= F_STRICT; if (next(js) == TOK_STRING) { const char *str = &js->code[js->toff + 1]; size_t str_len = js->tlen - 2; if (str_len == 10 && memcmp(str, "use strict", 10) == 0) { js->flags |= F_STRICT; is_strict = true; } } js->tok = saved_tok; js->pos = saved_pos; js->consumed = saved_consumed; if (is_strict) { mkscope(js); setprop(js, js->scope, js_mkstr(js, "__strict_eval_scope__", 21), js_mktrue()); } hoist_function_declarations(js); while (next(js) != TOK_EOF && !is_err(res)) { res = js_stmt(js); if (js->flags & F_RETURN) break; } if (is_strict) delscope(js); return res; } jsval_t js_eval(struct js *js, const char *buf, size_t len) { return js_eval_inherit_strict(js, buf, len, false); } static jsval_t js_call_internal(struct js *js, jsval_t func, jsval_t bound_this, jsval_t *args, int nargs, bool use_bound_this) { if (vtype(func) == T_CFUNC) { jsval_t (*fn)(struct js *, jsval_t *, int) = (jsval_t(*)(struct js *, jsval_t *, int)) vdata(func); return fn(js, args, nargs); } else if (vtype(func) == T_FUNC) { jsval_t func_obj = mkval(T_OBJ, vdata(func)); jsoff_t native_off = lkp_interned(js, func_obj, INTERN_NATIVE_FUNC, 13); if (native_off != 0) { jsval_t native_val = resolveprop(js, mkval(T_PROP, native_off)); if (vtype(native_val) == T_CFUNC) { jsval_t saved_func = js->current_func; jsval_t saved_this = js->this_val; js->current_func = func; if (use_bound_this) js->this_val = bound_this; jsval_t (*fn)(struct js *, jsval_t *, int) = (jsval_t(*)(struct js *, jsval_t *, int)) vdata(native_val); jsval_t res = fn(js, args, nargs); js->current_func = saved_func; js->this_val = saved_this; return res; } } jsoff_t code_off = lkp_interned(js, func_obj, INTERN_CODE, 6); if (code_off == 0) return js_mkerr(js, "function has no code"); jsval_t code_val = resolveprop(js, mkval(T_PROP, code_off)); if (vtype(code_val) != T_STR) return js_mkerr(js, "function code not string"); jsoff_t fnlen, fnoff = vstr(js, code_val, &fnlen); const char *fn = (const char *) (&js->mem[fnoff]); jsoff_t async_off = lkp_interned(js, func_obj, INTERN_ASYNC, 7); bool is_async = false; if (async_off != 0) { jsval_t async_val = resolveprop(js, mkval(T_PROP, async_off)); is_async = vtype(async_val) == T_BOOL && vdata(async_val) == 1; } if (is_async) { jsval_t closure_scope = js_mkundef(); jsoff_t scope_off = lkp_interned(js, func_obj, INTERN_SCOPE, 7); if (scope_off != 0) { closure_scope = resolveprop(js, mkval(T_PROP, scope_off)); } return start_async_in_coroutine(js, fn, fnlen, closure_scope, args, nargs); } jsval_t saved_scope = js->scope; jsoff_t scope_off = lkp_interned(js, func_obj, INTERN_SCOPE, 7); if (scope_off != 0) { jsval_t closure_scope = resolveprop(js, mkval(T_PROP, scope_off)); if (vtype(closure_scope) == T_OBJ) { js->scope = closure_scope; } } uint8_t saved_flags = js->flags; js->flags = 0; mkscope(js); js->flags = saved_flags; parsed_func_t *pf = get_or_parse_func(fn, fnlen); if (!pf) { delscope(js); js->scope = saved_scope; return js_mkerr(js, "failed to parse function"); } int arg_idx = 0; for (int i = 0; i < pf->param_count && i < MAX_FUNC_PARAMS; i++) { parsed_param_t *pp = &pf->params[i]; if (pp->is_destruct) { jsval_t arg_val = (arg_idx < nargs) ? args[arg_idx++] : js_mkundef(); if (vtype(arg_val) == T_UNDEF && pp->default_len > 0) { arg_val = js_eval_str(js, &fn[pp->default_start], pp->default_len); } bind_destruct_pattern(js, &fn[pp->pattern_off], pp->pattern_len, arg_val, js->scope); } else { jsval_t v = arg_idx < nargs ? args[arg_idx++] : js_mkundef(); if (vtype(v) == T_UNDEF && pp->default_len > 0) { v = js_eval_str(js, &fn[pp->default_start], pp->default_len); } setprop(js, js->scope, js_mkstr(js, &fn[pp->name_off], pp->name_len), v); } } if (pf->has_rest && pf->rest_param_len > 0) { jsval_t rest_array = mkarr(js); if (!is_err(rest_array)) { jsoff_t idx = 0; while (arg_idx < nargs) { char idxstr[16]; size_t idxlen = uint_to_str(idxstr, sizeof(idxstr), (unsigned)idx); jsval_t key = js_mkstr(js, idxstr, idxlen); setprop(js, rest_array, key, args[arg_idx]); idx++; arg_idx++; } jsval_t len_key = js_mkstr(js, "length", 6); setprop(js, rest_array, len_key, tov((double) idx)); rest_array = mkval(T_ARR, vdata(rest_array)); setprop(js, js->scope, js_mkstr(js, &fn[pf->rest_param_start], pf->rest_param_len), rest_array); } } jsval_t saved_this = js->this_val; js->this_val = use_bound_this ? bound_this : js_glob(js); js_parse_state_t saved_state; JS_SAVE_STATE(js, saved_state); uint8_t caller_flags = js->flags; js->flags = F_CALL; jsval_t res = js_eval(js, &fn[pf->body_start], pf->body_len); if (!is_err(res) && !(js->flags & F_RETURN)) res = js_mkundef(); JS_RESTORE_STATE(js, saved_state); js->flags = caller_flags; js->this_val = saved_this; delscope(js); js->scope = saved_scope; return res; } return js_mkerr(js, "not a function"); } jsval_t js_call(struct js *js, jsval_t func, jsval_t *args, int nargs) { return js_call_internal(js, func, js_mkundef(), args, nargs, false); } jsval_t js_call_with_this(struct js *js, jsval_t func, jsval_t bound_this, jsval_t *args, int nargs) { return js_call_internal(js, func, bound_this, args, nargs, true); } js_prop_iter_t js_prop_iter_begin(struct js *js, jsval_t obj) { js_prop_iter_t iter = {0}; iter.obj = obj; iter.js_internal = (void *)js; if (vtype(obj) == T_OBJ || vtype(obj) == T_ARR || vtype(obj) == T_FUNC) { jsval_t check_obj = (vtype(obj) == T_FUNC) ? mkval(T_OBJ, vdata(obj)) : obj; jsoff_t next = loadoff(js, (jsoff_t) vdata(check_obj)) & ~(3U | CONSTMASK | ARRMASK); iter.current = (void *)(uintptr_t)next; } return iter; } bool js_prop_iter_next(js_prop_iter_t *iter, const char **key, size_t *key_len, jsval_t *value) { if (!iter || !iter->js_internal) return false; struct js *js = (struct js *)iter->js_internal; jsoff_t next = (jsoff_t)(uintptr_t)iter->current; if (next >= js->brk || next == 0) return false; jsoff_t koff = loadoff(js, next + (jsoff_t) sizeof(next)); jsval_t val = loadval(js, next + (jsoff_t) (sizeof(next) + sizeof(koff))); if (key) { jsoff_t klen = offtolen(loadoff(js, koff)); *key = (const char *) &js->mem[koff + sizeof(koff)]; if (key_len) *key_len = klen; } if (value) *value = val; iter->current = (void *)(uintptr_t)(loadoff(js, next) & ~(3U | CONSTMASK | ARRMASK)); return true; } void js_prop_iter_end(js_prop_iter_t *iter) { if (iter) { iter->current = NULL; iter->js_internal = NULL; } } jsval_t js_mkpromise(struct js *js) { return mkpromise(js); } void js_resolve_promise(struct js *js, jsval_t promise, jsval_t value) { resolve_promise(js, promise, value); } void js_reject_promise(struct js *js, jsval_t promise, jsval_t value) { reject_promise(js, promise, value); } #ifdef JS_DUMP void js_dump(struct js *js) { jsoff_t off = 0, v; printf("JS size %u, brk %u, lwm %u, css %u, nogc %u\n", js->size, js->brk, js->lwm, (unsigned) js->css, js->nogc); while (off < js->brk) { memcpy(&v, &js->mem[off], sizeof(v)); printf(" %5u: ", off); jsoff_t cleaned = v & ~(GCMASK | CONSTMASK); if ((cleaned & 3U) == T_OBJ) { printf("OBJ %u %u%s\n", cleaned & ~3U, loadoff(js, (jsoff_t) (off + sizeof(off))), (v & CONSTMASK) ? " [CONST]" : ""); } else if ((cleaned & 3U) == T_PROP) { jsoff_t koff = loadoff(js, (jsoff_t) (off + sizeof(v))); jsval_t val = loadval(js, (jsoff_t) (off + sizeof(v) + sizeof(v))); printf("PROP next %u, koff %u vtype %d vdata %lu%s\n", cleaned & ~3U, koff, vtype(val), (unsigned long) vdata(val), (v & CONSTMASK) ? " [CONST]" : ""); } else if ((cleaned & 3) == T_STR) { jsoff_t len = offtolen(cleaned); printf("STR %u [%.*s]\n", len, (int) len, js->mem + off + sizeof(v)); } else { printf("???\n"); break; } off += esize(v & ~(GCMASK | CONSTMASK)); } } #endif void js_set_getter(struct js *js, jsval_t obj, js_getter_fn getter) { if (vtype(obj) != T_OBJ) return; jsoff_t obj_off = (jsoff_t)vdata(obj); dynamic_accessors_t *entry = NULL; HASH_FIND(hh, accessor_registry, &obj_off, sizeof(jsoff_t), entry); if (!entry) { entry = (dynamic_accessors_t *)malloc(sizeof(dynamic_accessors_t)); if (!entry) return; entry->obj_offset = obj_off; entry->getter = NULL; entry->setter = NULL; HASH_ADD(hh, accessor_registry, obj_offset, sizeof(jsoff_t), entry); } entry->getter = getter; } void js_set_setter(struct js *js, jsval_t obj, js_setter_fn setter) { if (vtype(obj) != T_OBJ) return; jsoff_t obj_off = (jsoff_t)vdata(obj); dynamic_accessors_t *entry = NULL; HASH_FIND(hh, accessor_registry, &obj_off, sizeof(jsoff_t), entry); if (!entry) { entry = (dynamic_accessors_t *)malloc(sizeof(dynamic_accessors_t)); if (!entry) return; entry->obj_offset = obj_off; entry->getter = NULL; entry->setter = NULL; HASH_ADD(hh, accessor_registry, obj_offset, sizeof(jsoff_t), entry); } entry->setter = setter; } static inline uint64_t make_desc_key(jsoff_t obj_off, const char *key, size_t klen) { uint32_t key_hash = (uint32_t)hash_key(key, klen); return ((uint64_t)obj_off << 32) | key_hash; } static descriptor_entry_t *lookup_descriptor(jsoff_t obj_off, const char *key, size_t klen) { uint64_t desc_key = make_desc_key(obj_off, key, klen); descriptor_entry_t *entry = NULL; HASH_FIND(hh, desc_registry, &desc_key, sizeof(uint64_t), entry); return entry; } static descriptor_entry_t *get_or_create_desc(struct js *js, jsval_t obj, const char *key, size_t klen) { if (vtype(obj) != T_OBJ && vtype(obj) != T_FUNC) return NULL; jsoff_t obj_off = (jsoff_t)vdata(obj); uint64_t desc_key = make_desc_key(obj_off, key, klen); descriptor_entry_t *entry = NULL; HASH_FIND(hh, desc_registry, &desc_key, sizeof(uint64_t), entry); if (!entry) { entry = (descriptor_entry_t *)malloc(sizeof(descriptor_entry_t)); if (!entry) return NULL; entry->key = desc_key; entry->writable = true; entry->enumerable = true; entry->configurable = true; entry->has_getter = false; entry->has_setter = false; entry->getter = js_mkundef(); entry->setter = js_mkundef(); HASH_ADD(hh, desc_registry, key, sizeof(uint64_t), entry); } return entry; } void js_set_descriptor(struct js *js, jsval_t obj, const char *key, size_t klen, int flags) { descriptor_entry_t *entry = get_or_create_desc(js, obj, key, klen); if (!entry) return; entry->writable = (flags & JS_DESC_W) != 0; entry->enumerable = (flags & JS_DESC_E) != 0; entry->configurable = (flags & JS_DESC_C) != 0; } void js_set_getter_desc(struct js *js, jsval_t obj, const char *key, size_t klen, jsval_t getter, int flags) { descriptor_entry_t *entry = get_or_create_desc(js, obj, key, klen); if (!entry) return; entry->enumerable = (flags & JS_DESC_E) != 0; entry->configurable = (flags & JS_DESC_C) != 0; entry->has_getter = true; entry->getter = getter; } void js_set_setter_desc(struct js *js, jsval_t obj, const char *key, size_t klen, jsval_t setter, int flags) { descriptor_entry_t *entry = get_or_create_desc(js, obj, key, klen); if (!entry) return; entry->enumerable = (flags & JS_DESC_E) != 0; entry->configurable = (flags & JS_DESC_C) != 0; entry->has_setter = true; entry->setter = setter; } void js_set_accessor_desc(struct js *js, jsval_t obj, const char *key, size_t klen, jsval_t getter, jsval_t setter, int flags) { descriptor_entry_t *entry = get_or_create_desc(js, obj, key, klen); if (!entry) return; entry->enumerable = (flags & JS_DESC_E) != 0; entry->configurable = (flags & JS_DESC_C) != 0; entry->has_getter = true; entry->has_setter = true; entry->getter = getter; entry->setter = setter; } void js_print_stack_trace(FILE *stream) { if (global_call_stack.depth > 0) { for (int i = global_call_stack.depth - 1; i >= 0; i--) { call_frame_t *frame = &global_call_stack.frames[i]; fprintf(stream, " at "); if (frame->function_name) { fprintf(stream, "%s", frame->function_name); } else fprintf(stream, ""); fprintf(stream, " (\x1b[90m"); if (frame->line < 0 && frame->code) { get_line_col(frame->code, frame->pos, &frame->line, &frame->col); } int fline = frame->line > 0 ? frame->line : 1; int fcol = frame->col > 0 ? frame->col : 1; if (frame->filename) { fprintf(stream, "%s:%d:%d", frame->filename, fline, fcol); } else fprintf(stream, ""); fprintf(stream, "\x1b[0m)\n"); } } }