solidity/libyul/optimiser/FunctionHoister.h

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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 changes the code so that all function definitions are at the top
* level block.
*/
#pragma once
#include <libyul/AsmDataForward.h>
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#include <libyul/optimiser/ASTWalker.h>
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namespace yul
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{
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struct OptimiserStepContext;
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/**
* Moves all functions to the top-level scope.
* Applying this transformation to source code that has ambiguous identifiers might
* lead to invalid code.
*
* Prerequisites: Disambiguator
*/
class FunctionHoister: public ASTModifier
{
public:
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static constexpr char const* name{"FunctionHoister"};
static void run(OptimiserStepContext&, Block& _ast) { FunctionHoister{}(_ast); }
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using ASTModifier::operator();
virtual void operator()(Block& _block);
private:
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FunctionHoister() = default;
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bool m_isTopLevel = true;
std::vector<Statement> m_functions;
};
}