mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
60 lines
1.5 KiB
C++
60 lines
1.5 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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/**
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* Small useful snippets for the optimiser.
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*/
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#pragma once
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#include <libdevcore/Common.h>
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#include <libyul/AsmDataForward.h>
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namespace yul
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{
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dev::u256 valueOfNumberLiteral(Literal const& _literal);
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/**
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* Linear order on Yul AST nodes.
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*
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* Defines a linear order on Yul AST nodes to be used in maps and sets.
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* Note: the order is total and deterministic, but independent of the semantics, e.g.
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* it is not guaranteed that the false Literal is "less" than the true Literal.
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*/
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template<typename T>
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struct Less
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{
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bool operator()(T const& _lhs, T const& _rhs) const;
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};
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template<typename T>
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struct Less<T*>
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{
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bool operator()(T const* _lhs, T const* _rhs) const
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{
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if (_lhs && _rhs)
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return Less<T>{}(*_lhs, *_rhs);
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else
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return _lhs < _rhs;
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}
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};
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template<> bool Less<Literal>::operator()(Literal const& _lhs, Literal const& _rhs) const;
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extern template struct Less<Literal>;
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}
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