solidity/libyul/optimiser/ASTWalker.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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/**
* Generic AST walker.
*/
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#include <libyul/optimiser/ASTWalker.h>
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#include <libyul/AST.h>
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#include <boost/range/adaptor/reversed.hpp>
using namespace std;
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using namespace solidity;
using namespace solidity::yul;
using namespace solidity::util;
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void ASTWalker::operator()(FunctionCall const& _funCall)
{
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// Does not visit _funCall.functionName on purpose
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walkVector(_funCall.arguments | boost::adaptors::reversed);
}
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void ASTWalker::operator()(ExpressionStatement const& _statement)
{
visit(_statement.expression);
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}
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void ASTWalker::operator()(Assignment const& _assignment)
{
for (auto const& name: _assignment.variableNames)
(*this)(name);
visit(*_assignment.value);
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}
void ASTWalker::operator()(VariableDeclaration const& _varDecl)
{
if (_varDecl.value)
visit(*_varDecl.value);
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}
void ASTWalker::operator()(If const& _if)
{
visit(*_if.condition);
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(*this)(_if.body);
}
void ASTWalker::operator()(Switch const& _switch)
{
visit(*_switch.expression);
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for (auto const& _case: _switch.cases)
{
if (_case.value)
(*this)(*_case.value);
(*this)(_case.body);
}
}
void ASTWalker::operator()(FunctionDefinition const& _fun)
{
(*this)(_fun.body);
}
void ASTWalker::operator()(ForLoop const& _for)
{
(*this)(_for.pre);
visit(*_for.condition);
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(*this)(_for.body);
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(*this)(_for.post);
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}
void ASTWalker::operator()(Block const& _block)
{
walkVector(_block.statements);
}
void ASTWalker::visit(Statement const& _st)
{
std::visit(*this, _st);
}
void ASTWalker::visit(Expression const& _e)
{
std::visit(*this, _e);
}
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void ASTModifier::operator()(FunctionCall& _funCall)
{
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// Does not visit _funCall.functionName on purpose
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walkVector(_funCall.arguments | boost::adaptors::reversed);
}
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void ASTModifier::operator()(ExpressionStatement& _statement)
{
visit(_statement.expression);
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}
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void ASTModifier::operator()(Assignment& _assignment)
{
for (auto& name: _assignment.variableNames)
(*this)(name);
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visit(*_assignment.value);
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}
void ASTModifier::operator()(VariableDeclaration& _varDecl)
{
if (_varDecl.value)
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visit(*_varDecl.value);
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}
void ASTModifier::operator()(If& _if)
{
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visit(*_if.condition);
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(*this)(_if.body);
}
void ASTModifier::operator()(Switch& _switch)
{
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visit(*_switch.expression);
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for (auto& _case: _switch.cases)
{
if (_case.value)
(*this)(*_case.value);
(*this)(_case.body);
}
}
void ASTModifier::operator()(FunctionDefinition& _fun)
{
(*this)(_fun.body);
}
void ASTModifier::operator()(ForLoop& _for)
{
(*this)(_for.pre);
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visit(*_for.condition);
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(*this)(_for.post);
(*this)(_for.body);
}
void ASTModifier::operator()(Break&)
{
}
void ASTModifier::operator()(Continue&)
{
}
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void ASTModifier::operator()(Leave&)
{
}
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void ASTModifier::operator()(Block& _block)
{
walkVector(_block.statements);
}
void ASTModifier::visit(Statement& _st)
{
std::visit(*this, _st);
}
void ASTModifier::visit(Expression& _e)
{
std::visit(*this, _e);
}