82ca7ae1f8
Fix the "instanceof" operator to check if the constructor's prototype property occurs anywhere in the prototype chain of the instance object. This patch also adds Object.setPrototypeOf() to make it possible to create a test for this bug. Thanks to DexesTTP for pointing this out! :^)
85 lines
3.4 KiB
C++
85 lines
3.4 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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#pragma once
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#include <AK/HashMap.h>
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#include <AK/String.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Runtime/Cell.h>
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#include <LibJS/Runtime/PrimitiveString.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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class Object : public Cell {
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public:
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Object();
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virtual ~Object();
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Optional<Value> get(const FlyString& property_name) const;
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void put(const FlyString& property_name, Value);
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virtual Optional<Value> get_own_property(const Object& this_object, const FlyString& property_name) const;
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virtual bool put_own_property(Object& this_object, const FlyString& property_name, Value);
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void put_native_function(const FlyString& property_name, AK::Function<Value(Object*, Vector<Value>)>);
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void put_native_property(const FlyString& property_name, AK::Function<Value(Object*)> getter, AK::Function<void(Object*, Value)> setter);
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virtual bool is_error() const { return false; }
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virtual bool is_array() const { return false; }
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virtual bool is_function() const { return false; }
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virtual bool is_native_function() const { return false; }
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virtual bool is_string_object() const { return false; }
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virtual bool is_native_property() const { return false; }
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virtual const char* class_name() const override { return "Object"; }
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virtual void visit_children(Cell::Visitor&) override;
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Object* prototype() { return m_prototype; }
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const Object* prototype() const { return m_prototype; }
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void set_prototype(Object* prototype) { m_prototype = prototype; }
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bool has_prototype(const Object* prototype) const;
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bool has_own_property(const FlyString& property_name) const;
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enum class PreferredType {
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Default,
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String,
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Number,
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};
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virtual Value value_of() const { return Value(const_cast<Object*>(this)); }
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virtual Value to_primitive(PreferredType preferred_type = PreferredType::Default) const;
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virtual Value to_string() const;
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const HashMap<FlyString, Value>& own_properties() const { return m_properties; }
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private:
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HashMap<FlyString, Value> m_properties;
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Object* m_prototype { nullptr };
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};
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}
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