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Libraries: Move to Userland/Libraries/
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1857 changed files with 266 additions and 274 deletions
101
Userland/Libraries/LibJS/Runtime/Reference.h
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101
Userland/Libraries/LibJS/Runtime/Reference.h
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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 <AK/String.h>
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#include <LibJS/Runtime/PropertyName.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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class Reference {
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public:
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Reference() { }
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Reference(Value base, const PropertyName& name, bool strict = false)
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: m_base(base)
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, m_name(name)
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, m_strict(strict)
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{
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}
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enum LocalVariableTag { LocalVariable };
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Reference(LocalVariableTag, const String& name, bool strict = false)
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: m_base(js_null())
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, m_name(name)
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, m_strict(strict)
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, m_local_variable(true)
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{
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}
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enum GlobalVariableTag { GlobalVariable };
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Reference(GlobalVariableTag, const String& name, bool strict = false)
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: m_base(js_null())
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, m_name(name)
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, m_strict(strict)
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, m_global_variable(true)
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{
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}
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Value base() const { return m_base; }
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const PropertyName& name() const { return m_name; }
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bool is_strict() const { return m_strict; }
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bool is_unresolvable() const { return m_base.is_undefined(); }
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bool is_property() const
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{
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return m_base.is_object() || has_primitive_base();
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}
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bool has_primitive_base() const
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{
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return m_base.is_boolean() || m_base.is_string() || m_base.is_number();
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}
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bool is_local_variable() const
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{
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return m_local_variable;
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}
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bool is_global_variable() const
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{
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return m_global_variable;
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}
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void put(GlobalObject&, Value);
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Value get(GlobalObject&);
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private:
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void throw_reference_error(GlobalObject&);
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Value m_base { js_undefined() };
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PropertyName m_name;
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bool m_strict { false };
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bool m_local_variable { false };
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bool m_global_variable { false };
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};
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}
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