206 lines
7.5 KiB
C++
206 lines
7.5 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Function.h>
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#include <LibJS/Heap/Heap.h>
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#include <LibJS/Interpreter.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/ObjectConstructor.h>
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#include <LibJS/Runtime/Shape.h>
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namespace JS {
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ObjectConstructor::ObjectConstructor()
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: NativeFunction("Object", *interpreter().global_object().function_prototype())
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{
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define_property("prototype", interpreter().global_object().object_prototype(), 0);
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define_property("length", Value(1), Attribute::Configurable);
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function("defineProperty", define_property_, 3, attr);
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define_native_function("is", is, 2, attr);
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define_native_function("getOwnPropertyDescriptor", get_own_property_descriptor, 2, attr);
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define_native_function("getOwnPropertyNames", get_own_property_names, 1, attr);
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define_native_function("getPrototypeOf", get_prototype_of, 1, attr);
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define_native_function("setPrototypeOf", set_prototype_of, 2, attr);
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define_native_function("isExtensible", is_extensible, 1, attr);
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define_native_function("preventExtensions", prevent_extensions, 1, attr);
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define_native_function("keys", keys, 1, attr);
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define_native_function("values", values, 1, attr);
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define_native_function("entries", entries, 1, attr);
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}
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ObjectConstructor::~ObjectConstructor()
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{
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}
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Value ObjectConstructor::call(Interpreter& interpreter)
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{
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return Object::create_empty(interpreter, interpreter.global_object());
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}
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Value ObjectConstructor::construct(Interpreter& interpreter)
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{
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return call(interpreter);
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}
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Value ObjectConstructor::get_own_property_names(Interpreter& interpreter)
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{
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if (!interpreter.argument_count())
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return {};
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auto* object = interpreter.argument(0).to_object(interpreter);
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if (interpreter.exception())
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return {};
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auto* result = Array::create(interpreter.global_object());
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for (auto& entry : object->indexed_properties())
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result->indexed_properties().append(js_string(interpreter, String::number(entry.index())));
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for (auto& it : object->shape().property_table_ordered())
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result->indexed_properties().append(js_string(interpreter, it.key));
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return result;
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}
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Value ObjectConstructor::get_prototype_of(Interpreter& interpreter)
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{
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if (!interpreter.argument_count())
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return {};
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auto* object = interpreter.argument(0).to_object(interpreter);
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if (interpreter.exception())
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return {};
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return object->prototype();
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}
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Value ObjectConstructor::set_prototype_of(Interpreter& interpreter)
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{
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if (interpreter.argument_count() < 2)
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return {};
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auto* object = interpreter.argument(0).to_object(interpreter);
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if (interpreter.exception())
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return {};
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auto prototype_value = interpreter.argument(1);
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Object* prototype;
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if (prototype_value.is_null()) {
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prototype = nullptr;
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} else if (prototype_value.is_object()) {
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prototype = &prototype_value.as_object();
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} else {
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interpreter.throw_exception<TypeError>("Prototype must be null or object");
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return {};
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}
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object->set_prototype(prototype);
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return object;
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}
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Value ObjectConstructor::is_extensible(Interpreter& interpreter)
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{
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auto argument = interpreter.argument(0);
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if (!argument.is_object())
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return Value(false);
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return Value(argument.as_object().is_extensible());
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}
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Value ObjectConstructor::prevent_extensions(Interpreter& interpreter)
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{
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auto argument = interpreter.argument(0);
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if (!argument.is_object())
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return argument;
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if (!argument.as_object().prevent_extensions()) {
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interpreter.throw_exception<TypeError>("Proxy preventExtensions handler returned false");
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return {};
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}
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return argument;
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}
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Value ObjectConstructor::get_own_property_descriptor(Interpreter& interpreter)
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{
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auto* object = interpreter.argument(0).to_object(interpreter);
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if (interpreter.exception())
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return {};
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auto property_key = interpreter.argument(1).to_string(interpreter);
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if (interpreter.exception())
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return {};
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return object->get_own_property_descriptor(property_key);
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}
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Value ObjectConstructor::define_property_(Interpreter& interpreter)
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{
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if (!interpreter.argument(0).is_object())
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return interpreter.throw_exception<TypeError>("Object argument is not an object");
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if (!interpreter.argument(2).is_object())
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return interpreter.throw_exception<TypeError>("Descriptor argument is not an object");
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auto& object = interpreter.argument(0).as_object();
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auto property_key = interpreter.argument(1).to_string(interpreter);
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if (interpreter.exception())
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return {};
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auto& descriptor = interpreter.argument(2).as_object();
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object.define_property(property_key, descriptor);
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return &object;
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}
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Value ObjectConstructor::is(Interpreter& interpreter)
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{
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return Value(same_value(interpreter, interpreter.argument(0), interpreter.argument(1)));
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}
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Value ObjectConstructor::keys(Interpreter& interpreter)
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{
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if (!interpreter.argument_count())
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return interpreter.throw_exception<TypeError>("Can't convert undefined to object");
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auto* obj_arg = interpreter.argument(0).to_object(interpreter);
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if (interpreter.exception())
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return {};
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return obj_arg->get_own_properties(*obj_arg, GetOwnPropertyMode::Key, Attribute::Enumerable);
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}
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Value ObjectConstructor::values(Interpreter& interpreter)
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{
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if (!interpreter.argument_count())
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return interpreter.throw_exception<TypeError>("Can't convert undefined to object");
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auto* obj_arg = interpreter.argument(0).to_object(interpreter);
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if (interpreter.exception())
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return {};
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return obj_arg->get_own_properties(*obj_arg, GetOwnPropertyMode::Value, Attribute::Enumerable);
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}
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Value ObjectConstructor::entries(Interpreter& interpreter)
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{
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if (!interpreter.argument_count())
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return interpreter.throw_exception<TypeError>("Can't convert undefined to object");
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auto* obj_arg = interpreter.argument(0).to_object(interpreter);
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if (interpreter.exception())
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return {};
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return obj_arg->get_own_properties(*obj_arg, GetOwnPropertyMode::KeyAndValue, Attribute::Enumerable);
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}
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}
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