/* * QuickJS Javascript Engine * * Copyright (c) 2017-2021 Fabrice Bellard * Copyright (c) 2017-2021 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "third_party/quickjs/internal.h" #include "third_party/quickjs/libregexp.h" #include "third_party/quickjs/quickjs.h" asm(".ident\t\"\\n\\n\ QuickJS (MIT License)\\n\ Copyright (c) 2017-2021 Fabrice Bellard\\n\ Copyright (c) 2017-2021 Charlie Gordon\""); asm(".include \"libc/disclaimer.inc\""); /* clang-format off */ JSValue JS_ThrowTypeErrorRevokedProxy(JSContext *ctx) { return JS_ThrowTypeError(ctx, "revoked proxy"); } JSValue JS_ThrowTypeErrorInvalidClass(JSContext *ctx, int class_id) { JSRuntime *rt = ctx->rt; JSAtom name; name = rt->class_array[class_id].class_name; return JS_ThrowTypeErrorAtom(ctx, "%s object expected", name); } /* warning: the refcount of the context is not incremented. Return NULL in case of exception (case of revoked proxy only) */ JSContext *JS_GetFunctionRealm(JSContext *ctx, JSValueConst func_obj) { JSObject *p; JSContext *realm; if (JS_VALUE_GET_TAG(func_obj) != JS_TAG_OBJECT) return ctx; p = JS_VALUE_GET_OBJ(func_obj); switch(p->class_id) { case JS_CLASS_C_FUNCTION: realm = p->u.cfunc.realm; break; case JS_CLASS_BYTECODE_FUNCTION: case JS_CLASS_GENERATOR_FUNCTION: case JS_CLASS_ASYNC_FUNCTION: case JS_CLASS_ASYNC_GENERATOR_FUNCTION: { JSFunctionBytecode *b; b = p->u.func.function_bytecode; realm = b->realm; } break; case JS_CLASS_PROXY: { JSProxyData *s = p->u.opaque; if (!s) return ctx; if (s->is_revoked) { JS_ThrowTypeErrorRevokedProxy(ctx); return NULL; } else { realm = JS_GetFunctionRealm(ctx, s->target); } } break; case JS_CLASS_BOUND_FUNCTION: { JSBoundFunction *bf = p->u.bound_function; realm = JS_GetFunctionRealm(ctx, bf->func_obj); } break; default: realm = ctx; break; } return realm; } JSValue js_create_from_ctor(JSContext *ctx, JSValueConst ctor, int class_id) { JSValue proto, obj; JSContext *realm; if (JS_IsUndefined(ctor)) { proto = JS_DupValue(ctx, ctx->class_proto[class_id]); } else { proto = JS_GetProperty(ctx, ctor, JS_ATOM_prototype); if (JS_IsException(proto)) return proto; if (!JS_IsObject(proto)) { JS_FreeValue(ctx, proto); realm = JS_GetFunctionRealm(ctx, ctor); if (!realm) return JS_EXCEPTION; proto = JS_DupValue(ctx, realm->class_proto[class_id]); } } obj = JS_NewObjectProtoClass(ctx, proto, class_id); JS_FreeValue(ctx, proto); return obj; } int JS_ToBoolFree(JSContext *ctx, JSValue val) { uint32_t tag = JS_VALUE_GET_TAG(val); switch(tag) { case JS_TAG_INT: return JS_VALUE_GET_INT(val) != 0; case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: return JS_VALUE_GET_INT(val); case JS_TAG_EXCEPTION: return -1; case JS_TAG_STRING: { BOOL ret = JS_VALUE_GET_STRING(val)->len != 0; JS_FreeValue(ctx, val); return ret; } #ifdef CONFIG_BIGNUM case JS_TAG_BIG_INT: case JS_TAG_BIG_FLOAT: { JSBigFloat *p = JS_VALUE_GET_PTR(val); BOOL ret; ret = p->num.expn != BF_EXP_ZERO && p->num.expn != BF_EXP_NAN; JS_FreeValue(ctx, val); return ret; } case JS_TAG_BIG_DECIMAL: { JSBigDecimal *p = JS_VALUE_GET_PTR(val); BOOL ret; ret = p->num.expn != BF_EXP_ZERO && p->num.expn != BF_EXP_NAN; JS_FreeValue(ctx, val); return ret; } #endif case JS_TAG_OBJECT: { JSObject *p = JS_VALUE_GET_OBJ(val); BOOL ret; ret = !p->is_HTMLDDA; JS_FreeValue(ctx, val); return ret; } break; default: if (JS_TAG_IS_FLOAT64(tag)) { double d = JS_VALUE_GET_FLOAT64(val); return !isnan(d) && d != 0; } else { JS_FreeValue(ctx, val); return TRUE; } } } int JS_ToBool(JSContext *ctx, JSValueConst val) { return JS_ToBoolFree(ctx, JS_DupValue(ctx, val)); } JSValue js_get_this(JSContext *ctx, JSValueConst this_val) { return JS_DupValue(ctx, this_val); }