solidity/libyul/optimiser/Disambiguator.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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/**
* Optimiser component that makes all identifiers unique.
*/
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#include <libyul/optimiser/Disambiguator.h>
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#include <libyul/AST.h>
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#include <libyul/Dialect.h>
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#include <libyul/Exceptions.h>
#include <libyul/Scope.h>
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using namespace std;
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using namespace solidity;
using namespace solidity::yul;
using namespace solidity::util;
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YulString Disambiguator::translateIdentifier(YulString _originalName)
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{
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if (m_dialect.builtin(_originalName) || m_externallyUsedIdentifiers.count(_originalName))
return _originalName;
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assertThrow(!m_scopes.empty() && m_scopes.back(), OptimizerException, "");
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Scope::Identifier const* id = m_scopes.back()->lookup(_originalName);
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assertThrow(id, OptimizerException, "");
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if (!m_translations.count(id))
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m_translations[id] = m_nameDispenser.newName(_originalName);
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return m_translations.at(id);
}
void Disambiguator::enterScope(Block const& _block)
{
enterScopeInternal(*m_info.scopes.at(&_block));
}
void Disambiguator::leaveScope(Block const& _block)
{
leaveScopeInternal(*m_info.scopes.at(&_block));
}
void Disambiguator::enterFunction(FunctionDefinition const& _function)
{
enterScopeInternal(*m_info.scopes.at(m_info.virtualBlocks.at(&_function).get()));
}
void Disambiguator::leaveFunction(FunctionDefinition const& _function)
{
leaveScopeInternal(*m_info.scopes.at(m_info.virtualBlocks.at(&_function).get()));
}
void Disambiguator::enterScopeInternal(Scope& _scope)
{
m_scopes.push_back(&_scope);
}
void Disambiguator::leaveScopeInternal(Scope& _scope)
{
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assertThrow(!m_scopes.empty(), OptimizerException, "");
assertThrow(m_scopes.back() == &_scope, OptimizerException, "");
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m_scopes.pop_back();
}