ladybird/Userland/Libraries/LibJS/Bytecode/IdentifierTable.h
Andreas Kling da98212001 LibJS: Add a separate "identifier table" to bytecode executables
This is a specialized string table for storing identifiers only.
Identifiers are always FlyStrings, which makes many common operations
faster by allowing O(1) comparison.
2021-10-24 17:18:07 +02:00

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/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/DistinctNumeric.h>
#include <AK/FlyString.h>
#include <AK/Vector.h>
namespace JS::Bytecode {
TYPEDEF_DISTINCT_NUMERIC_GENERAL(size_t, false, true, false, false, false, false, IdentifierTableIndex);
class IdentifierTable {
AK_MAKE_NONMOVABLE(IdentifierTable);
AK_MAKE_NONCOPYABLE(IdentifierTable);
public:
IdentifierTable() = default;
IdentifierTableIndex insert(FlyString);
FlyString const& get(IdentifierTableIndex) const;
void dump() const;
bool is_empty() const { return m_identifiers.is_empty(); }
private:
Vector<FlyString> m_identifiers;
};
}