mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#pragma once
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#include <memory>
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namespace solidity::frontend::smt
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{
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/**
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* This class represents the SSA representation of a program variable.
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*/
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class SSAVariable
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{
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public:
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SSAVariable();
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/// Resets index to 0 and next index to 1.
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void resetIndex();
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/// Sets index to _index and only adjusts next if next <= _index.
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void setIndex(unsigned _index);
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/// This function returns the current index of this SSA variable.
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unsigned index() const { return m_currentIndex; }
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unsigned& index() { return m_currentIndex; }
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unsigned operator++()
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{
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return m_currentIndex = m_nextFreeIndex++;
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}
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private:
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unsigned m_currentIndex;
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unsigned m_nextFreeIndex;
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};
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}
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