solidity/libyul/optimiser/CallGraphGenerator.cpp

68 lines
2.0 KiB
C++
Raw Normal View History

2019-08-06 10:46:16 +00:00
/*
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 generates the call graph.
*/
#include <libyul/AsmData.h>
#include <libyul/optimiser/CallGraphGenerator.h>
#include <libevmasm/Instruction.h>
#include <stack>
using namespace std;
using namespace dev;
using namespace yul;
2019-08-13 14:25:12 +00:00
map<YulString, set<YulString>> CallGraphGenerator::callGraph(Block const& _ast)
{
CallGraphGenerator gen;
gen(_ast);
return std::move(gen.m_callGraph);
}
2019-08-06 10:46:16 +00:00
void CallGraphGenerator::operator()(FunctionalInstruction const& _functionalInstruction)
{
2019-08-13 14:25:12 +00:00
string name = dev::eth::instructionInfo(_functionalInstruction.instruction).name;
std::transform(name.begin(), name.end(), name.begin(), [](unsigned char _c) { return tolower(_c); });
m_callGraph[m_currentFunction].insert(YulString{name});
2019-08-06 10:46:16 +00:00
ASTWalker::operator()(_functionalInstruction);
}
void CallGraphGenerator::operator()(FunctionCall const& _functionCall)
{
2019-08-13 14:25:12 +00:00
m_callGraph[m_currentFunction].insert(_functionCall.functionName.name);
2019-08-06 10:46:16 +00:00
ASTWalker::operator()(_functionCall);
}
void CallGraphGenerator::operator()(FunctionDefinition const& _functionDefinition)
{
YulString previousFunction = m_currentFunction;
m_currentFunction = _functionDefinition.name;
2019-08-13 14:25:12 +00:00
yulAssert(m_callGraph.count(m_currentFunction) == 0, "");
m_callGraph[m_currentFunction] = {};
2019-08-06 10:46:16 +00:00
ASTWalker::operator()(_functionDefinition);
m_currentFunction = previousFunction;
}
2019-08-13 14:25:12 +00:00
CallGraphGenerator::CallGraphGenerator()
{
m_callGraph[YulString{}] = {};
}