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https://github.com/RGBCube/serenity
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LibJS: Add ArrayPrototype and implement Array.prototype.push()
This function is ultimately supposed to be generic and allow any |this| that has a length property, but for now it only works on our own Array object type.
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9 changed files with 110 additions and 4 deletions
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@ -25,12 +25,14 @@
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*/
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#include <AK/Function.h>
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#include <LibJS/Interpreter.h>
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#include <LibJS/Runtime/Array.h>
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namespace JS {
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Array::Array()
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{
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set_prototype(interpreter().array_prototype());
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put_native_property(
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"length",
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[this](Object*) {
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@ -45,7 +47,7 @@ Array::~Array()
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{
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}
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void Array::append(Value value)
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void Array::push(Value value)
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{
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m_elements.append(value);
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}
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@ -39,7 +39,7 @@ public:
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const Vector<Value>& elements() const { return m_elements; }
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Vector<Value>& elements() { return m_elements; }
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void append(Value);
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void push(Value);
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private:
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virtual const char* class_name() const override { return "Array"; }
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52
Libraries/LibJS/Runtime/ArrayPrototype.cpp
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52
Libraries/LibJS/Runtime/ArrayPrototype.cpp
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@ -0,0 +1,52 @@
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/*
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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/ArrayPrototype.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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ArrayPrototype::ArrayPrototype()
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{
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put_native_function("push", [](Object* this_object, const Vector<Value>& arguments) -> Value {
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if (arguments.is_empty())
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return js_undefined();
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ASSERT(this_object);
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ASSERT(this_object->is_array());
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static_cast<Array*>(this_object)->push(arguments[0]);
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return Value(static_cast<const Array*>(this_object)->length());
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});
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}
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ArrayPrototype::~ArrayPrototype()
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{
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}
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}
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42
Libraries/LibJS/Runtime/ArrayPrototype.h
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42
Libraries/LibJS/Runtime/ArrayPrototype.h
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@ -0,0 +1,42 @@
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/*
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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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#pragma once
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#include <LibJS/Runtime/Object.h>
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namespace JS {
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class ArrayPrototype final : public Object {
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public:
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ArrayPrototype();
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virtual ~ArrayPrototype() override;
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private:
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virtual const char* class_name() const override { return "ArrayPrototype"; }
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};
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}
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