mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-10-23 01:23:19 +00:00
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
*
|
||
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
||
|
|
* list of conditions and the following disclaimer.
|
||
|
|
*
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||
|
|
* this list of conditions and the following disclaimer in the documentation
|
||
|
|
* and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <AK/FlyString.h>
|
||
|
|
#include <AK/HashMap.h>
|
||
|
|
#include <LibJS/Runtime/Cell.h>
|
||
|
|
#include <LibJS/Runtime/Value.h>
|
||
|
|
|
||
|
|
namespace JS {
|
||
|
|
|
||
|
|
struct Variable {
|
||
|
|
Value value;
|
||
|
|
DeclarationKind declaration_kind;
|
||
|
|
};
|
||
|
|
|
||
|
|
class LexicalEnvironment final : public Cell {
|
||
|
|
public:
|
||
|
|
LexicalEnvironment();
|
||
|
|
LexicalEnvironment(HashMap<FlyString, Variable> variables, LexicalEnvironment* parent);
|
||
|
|
virtual ~LexicalEnvironment() override;
|
||
|
|
|
||
|
|
LexicalEnvironment* parent() { return m_parent; }
|
||
|
|
|
||
|
|
Optional<Variable> get(const FlyString&) const;
|
||
|
|
void set(const FlyString&, Variable);
|
||
|
|
|
||
|
|
void clear();
|
||
|
|
|
||
|
|
const HashMap<FlyString, Variable>& variables() const { return m_variables; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
virtual const char* class_name() const override { return "LexicalEnvironment"; }
|
||
|
|
virtual void visit_children(Visitor&) override;
|
||
|
|
|
||
|
|
LexicalEnvironment* m_parent { nullptr };
|
||
|
|
HashMap<FlyString, Variable> m_variables;
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|