solidity/libyul/optimiser/NameCollector.cpp
2018-11-23 14:29:00 +01:00

75 lines
2.0 KiB
C++

/*
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/>.
*/
/**
* Specific AST walker that collects all defined names.
*/
#include <libyul/optimiser/NameCollector.h>
#include <libyul/AsmData.h>
using namespace std;
using namespace dev;
using namespace yul;
void NameCollector::operator()(VariableDeclaration const& _varDecl)
{
for (auto const& var: _varDecl.variables)
m_names.emplace(var.name);
}
void NameCollector::operator ()(FunctionDefinition const& _funDef)
{
m_names.emplace(_funDef.name);
for (auto const arg: _funDef.parameters)
m_names.emplace(arg.name);
for (auto const ret: _funDef.returnVariables)
m_names.emplace(ret.name);
ASTWalker::operator ()(_funDef);
}
void ReferencesCounter::operator()(Identifier const& _identifier)
{
++m_references[_identifier.name];
}
void ReferencesCounter::operator()(FunctionCall const& _funCall)
{
++m_references[_funCall.functionName.name];
ASTWalker::operator()(_funCall);
}
map<YulString, size_t> ReferencesCounter::countReferences(Block const& _block)
{
ReferencesCounter counter;
counter(_block);
return counter.references();
}
map<YulString, size_t> ReferencesCounter::countReferences(Expression const& _expression)
{
ReferencesCounter counter;
counter.visit(_expression);
return counter.references();
}
void Assignments::operator()(Assignment const& _assignment)
{
for (auto const& var: _assignment.variableNames)
m_names.emplace(var.name);
}