/* * Cppcheck - A tool for static C/C++ code analysis * Copyright (C) 2007-2022 Cppcheck team. * * This program 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. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef GUARD_PATHANALYSIS_H #define GUARD_PATHANALYSIS_H #include "errortypes.h" #include <functional> #include <list> #include <utility> class Library; class Scope; class Token; struct PathAnalysis { enum class Progress { Continue, Break }; PathAnalysis(const Token* start, const Library& library) : start(start), library(&library) {} const Token * start; const Library * library; struct Info { const Token* tok; ErrorPath errorPath; bool known; }; void forward(const std::function<Progress(const Info&)>& f) const; Info forwardFind(std::function<bool(const Info&)> pred) const { Info result{}; forward([&](const Info& info) { if (pred(info)) { result = info; return Progress::Break; } return Progress::Continue; }); return result; } private: Progress forwardRecursive(const Token* tok, Info info, const std::function<PathAnalysis::Progress(const Info&)>& f) const; Progress forwardRange(const Token* startToken, const Token* endToken, Info info, const std::function<Progress(const Info&)>& f) const; static const Scope* findOuterScope(const Scope * scope); static std::pair<bool, bool> checkCond(const Token * tok, bool& known); }; /** * @brief Returns true if there is a path between the two tokens * * @param start Starting point of the path * @param dest The path destination * @param errorPath Adds the path traversal to the errorPath */ bool reaches(const Token * start, const Token * dest, const Library& library, ErrorPath* errorPath); #endif