mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* Specific AST walker that collects all defined names.
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*/
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#include <libyul/optimiser/NameCollector.h>
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#include <libyul/AST.h>
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using namespace std;
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using namespace solidity;
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using namespace solidity::yul;
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using namespace solidity::util;
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void NameCollector::operator()(VariableDeclaration const& _varDecl)
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{
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for (auto const& var: _varDecl.variables)
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m_names.emplace(var.name);
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}
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void NameCollector::operator ()(FunctionDefinition const& _funDef)
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{
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if (m_collectWhat == VariablesAndFunctions)
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m_names.emplace(_funDef.name);
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for (auto const& arg: _funDef.parameters)
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m_names.emplace(arg.name);
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for (auto const& ret: _funDef.returnVariables)
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m_names.emplace(ret.name);
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ASTWalker::operator ()(_funDef);
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}
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void ReferencesCounter::operator()(Identifier const& _identifier)
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{
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++m_references[_identifier.name];
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}
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void ReferencesCounter::operator()(FunctionCall const& _funCall)
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{
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if (m_countWhat == VariablesAndFunctions)
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++m_references[_funCall.functionName.name];
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ASTWalker::operator()(_funCall);
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}
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map<YulString, size_t> ReferencesCounter::countReferences(Block const& _block, CountWhat _countWhat)
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{
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ReferencesCounter counter(_countWhat);
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counter(_block);
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return counter.references();
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}
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map<YulString, size_t> ReferencesCounter::countReferences(FunctionDefinition const& _function, CountWhat _countWhat)
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{
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ReferencesCounter counter(_countWhat);
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counter(_function);
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return counter.references();
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}
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map<YulString, size_t> ReferencesCounter::countReferences(Expression const& _expression, CountWhat _countWhat)
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{
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ReferencesCounter counter(_countWhat);
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counter.visit(_expression);
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return counter.references();
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}
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void AssignmentsSinceContinue::operator()(ForLoop const& _forLoop)
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{
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m_forLoopDepth++;
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ASTWalker::operator()(_forLoop);
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m_forLoopDepth--;
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}
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void AssignmentsSinceContinue::operator()(Continue const&)
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{
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if (m_forLoopDepth == 0)
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m_continueFound = true;
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}
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void AssignmentsSinceContinue::operator()(Assignment const& _assignment)
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{
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if (m_continueFound)
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for (auto const& var: _assignment.variableNames)
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m_names.emplace(var.name);
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}
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void AssignmentsSinceContinue::operator()(FunctionDefinition const&)
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{
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yulAssert(false, "");
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}
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std::set<YulString> solidity::yul::assignedVariableNames(Block const& _code)
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{
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std::set<YulString> names;
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forEach<Assignment const>(_code, [&](Assignment const& _assignment) {
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for (auto const& var: _assignment.variableNames)
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names.emplace(var.name);
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});
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return names;
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}
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map<YulString, FunctionDefinition const*> solidity::yul::allFunctionDefinitions(Block const& _block)
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{
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std::map<YulString, FunctionDefinition const*> result;
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forEach<FunctionDefinition const>(_block, [&](FunctionDefinition const& _function) {
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result[_function.name] = &_function;
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});
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return result;
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}
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