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LibJS: Implement Function.prototype.bind()
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10 changed files with 317 additions and 6 deletions
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Libraries/LibJS/Runtime/BoundFunction.h
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66
Libraries/LibJS/Runtime/BoundFunction.h
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/*
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* Copyright (c) 2020, Jack Karamanian <karamanian.jack@gmail.com>
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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/Function.h>
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namespace JS {
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class BoundFunction final : public Function {
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public:
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BoundFunction(Function& target_function, Value bound_this, Vector<Value> arguments, i32 length, Object* constructor_prototype);
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virtual ~BoundFunction();
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virtual Value call(Interpreter& interpreter) override;
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virtual Value construct(Interpreter& interpreter) override;
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virtual LexicalEnvironment* create_environment() override;
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virtual void visit_children(Visitor&) override;
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virtual const FlyString& name() const override
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{
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return m_name;
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}
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Function& target_function() const
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{
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return *m_target_function;
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}
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private:
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virtual bool is_bound_function() const override { return true; }
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virtual const char* class_name() const override { return "BoundFunction"; }
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Function* m_target_function = nullptr;
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Object* m_constructor_prototype = nullptr;
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FlyString m_name;
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};
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}
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