path: root/libsolidity/analysis/ControlFlowAnalyzer.h

/*
    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/>.
*/

#pragma once

#include <libsolidity/analysis/ControlFlowGraph.h>

#include <set>

namespace dev
{
namespace solidity
{

class ControlFlowAnalyzer: private ASTConstVisitor
{
public:
    explicit ControlFlowAnalyzer(CFG const& _cfg, ErrorReporter& _errorReporter):
        m_cfg(_cfg), m_errorReporter(_errorReporter) {}

    bool analyze(ASTNode const& _astRoot);

    virtual bool visit(FunctionDefinition const& _function) override;

private:
    static std::set<VariableDeclaration const*> variablesAssignedInNode(CFGNode const *node);
    void checkUnassignedStorageReturnValues(
        FunctionDefinition const& _function,
        CFGNode const* _functionEntry,
        CFGNode const* _functionExit
    ) const;

    CFG const& m_cfg;
    ErrorReporter& m_errorReporter;
};

}
}