solidity/libyul/optimiser/Substitution.cpp

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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
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/**
* Specific AST copier that replaces certain identifiers with expressions.
*/
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#include <libyul/optimiser/Substitution.h>
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#include <libyul/AST.h>
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using namespace std;
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using namespace solidity;
using namespace solidity::yul;
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Expression Substitution::translate(Expression const& _expression)
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{
if (holds_alternative<Identifier>(_expression))
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{
YulString name = std::get<Identifier>(_expression).name;
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if (m_substitutions.count(name))
// No recursive substitution
return ASTCopier().translate(*m_substitutions.at(name));
}
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return ASTCopier::translate(_expression);
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}