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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/>.
*/
/**
* Optimiser component that makes all identifiers unique.
*/
#pragma once
#include <libyul/ASTDataForward.h>
#include <libyul/AsmAnalysisInfo.h>
#include <libyul/optimiser/ASTCopier.h>
#include <libyul/optimiser/NameDispenser.h>
#include <boost/variant.hpp>
#include <boost/optional.hpp>
#include <set>
namespace dev
{
namespace yul
{
/**
* Creates a copy of a Yul AST replacing all identifiers by unique names.
*/
class Disambiguator: public ASTCopier
{
public:
explicit Disambiguator(
solidity::assembly::AsmAnalysisInfo const& _analysisInfo,
std::set<YulString> const& _externallyUsedIdentifiers = {}
):
m_info(_analysisInfo), m_externallyUsedIdentifiers(_externallyUsedIdentifiers), m_nameDispenser(m_externallyUsedIdentifiers)
{
}
protected:
void enterScope(Block const& _block) override;
void leaveScope(Block const& _block) override;
void enterFunction(FunctionDefinition const& _function) override;
void leaveFunction(FunctionDefinition const& _function) override;
YulString translateIdentifier(YulString _name) override;
void enterScopeInternal(solidity::assembly::Scope& _scope);
void leaveScopeInternal(solidity::assembly::Scope& _scope);
solidity::assembly::AsmAnalysisInfo const& m_info;
std::set<YulString> const& m_externallyUsedIdentifiers;
std::vector<solidity::assembly::Scope*> m_scopes;
std::map<void const*, YulString> m_translations;
NameDispenser m_nameDispenser;
};
}
}
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