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be019f28ca
Now that we have two separate storages for Object properties depending on what kind of index they have, it's nice to have an abstraction that still allows us to say "here's a property name". We use PropertyName to always choose the optimal storage path directly while interpreting the AST. :^)
65 lines
2.1 KiB
C++
65 lines
2.1 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/FlyString.h>
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namespace JS {
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class PropertyName {
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public:
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enum class Type {
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Number,
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String,
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};
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explicit PropertyName(i32 index)
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: m_type(Type::Number)
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, m_number(index)
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{
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ASSERT(m_number >= 0);
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}
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explicit PropertyName(const FlyString& string)
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: m_type(Type::String)
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, m_string(string)
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{
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}
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bool is_number() const { return m_type == Type::Number; }
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bool is_string() const { return m_type == Type::String; }
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i32 as_number() const { return m_number; }
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const FlyString& as_string() const { return m_string; }
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private:
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Type m_type;
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FlyString m_string;
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i32 m_number { 0 };
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};
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}
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