mirror of
https://github.com/RGBCube/serenity
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45dfa094e9
This patch adds a GetterSetterPair object. Values can now store pointers to objects of this type. These objects are created when using Object.defineProperty and providing an accessor descriptor.
79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
/*
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* Copyright (c) 2020, Matthew Olsson <matthewcolsson@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/Cell.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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class Accessor final : public Cell {
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public:
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static Accessor* create(Interpreter& interpreter, Value getter, Value setter)
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{
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return interpreter.heap().allocate<Accessor>(getter, setter);
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}
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Accessor(Value getter, Value setter)
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: m_getter(getter)
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, m_setter(setter)
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{
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}
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Value getter() { return m_getter; }
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Value setter() { return m_setter; }
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Value call_getter(Value this_object)
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{
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if (!getter().is_function())
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return js_undefined();
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return interpreter().call(getter().as_function(), this_object);
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}
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void call_setter(Value this_object, Value setter_value)
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{
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if (!setter().is_function())
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return;
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MarkedValueList arguments(interpreter().heap());
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arguments.values().append(setter_value);
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interpreter().call(setter().as_function(), this_object, move(arguments));
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}
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void visit_children(Cell::Visitor& visitor) override
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{
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visitor.visit(m_getter);
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visitor.visit(m_setter);
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}
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private:
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const char* class_name() const override { return "Accessor"; };
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Value m_getter;
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Value m_setter;
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};
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}
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