mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
69 lines
1.9 KiB
C++
69 lines
1.9 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/>.
|
|
*/
|
|
// SPDX-License-Identifier: GPL-3.0
|
|
/**
|
|
* Specific AST walker that generates the call graph.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <libyul/optimiser/ASTWalker.h>
|
|
|
|
#include <map>
|
|
#include <optional>
|
|
#include <set>
|
|
|
|
namespace solidity::yul
|
|
{
|
|
|
|
struct CallGraph
|
|
{
|
|
std::map<YulString, std::set<YulString>> functionCalls;
|
|
std::set<YulString> functionsWithLoops;
|
|
/// @returns the set of functions contained in cycles in the call graph, i.e.
|
|
/// functions that are part of a (mutual) recursion.
|
|
/// Note that this does not include functions that merely call recursive functions.
|
|
std::set<YulString> recursiveFunctions() const;
|
|
};
|
|
|
|
/**
|
|
* Specific AST walker that generates the call graph.
|
|
*
|
|
* It also generates information about which functions contain for loops.
|
|
*
|
|
* The outermost (non-function) context is denoted by the empty string.
|
|
*/
|
|
class CallGraphGenerator: public ASTWalker
|
|
{
|
|
public:
|
|
static CallGraph callGraph(Block const& _ast);
|
|
|
|
using ASTWalker::operator();
|
|
void operator()(FunctionCall const& _functionCall) override;
|
|
void operator()(ForLoop const& _forLoop) override;
|
|
void operator()(FunctionDefinition const& _functionDefinition) override;
|
|
|
|
private:
|
|
CallGraphGenerator();
|
|
|
|
CallGraph m_callGraph;
|
|
/// The name of the function we are currently visiting during traversal.
|
|
YulString m_currentFunction;
|
|
};
|
|
|
|
}
|