83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2022 Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GUARD_PATHANALYSIS_H
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#define GUARD_PATHANALYSIS_H
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#include "errortypes.h"
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#include <functional>
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#include <list>
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#include <utility>
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class Library;
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class Scope;
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class Token;
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struct PathAnalysis {
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enum class Progress {
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Continue,
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Break
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};
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PathAnalysis(const Token* start, const Library& library)
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: start(start), library(&library)
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{}
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const Token * start;
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const Library * library;
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struct Info {
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const Token* tok;
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ErrorPath errorPath;
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bool known;
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};
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void forward(const std::function<Progress(const Info&)>& f) const;
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Info forwardFind(std::function<bool(const Info&)> pred) const {
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Info result{};
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forward([&](const Info& info) {
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if (pred(info)) {
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result = info;
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return Progress::Break;
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}
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return Progress::Continue;
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});
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return result;
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}
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private:
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static Progress forwardRecursive(const Token* tok, Info info, const std::function<PathAnalysis::Progress(const Info&)>& f);
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Progress forwardRange(const Token* startToken, const Token* endToken, Info info, const std::function<Progress(const Info&)>& f) const;
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static const Scope* findOuterScope(const Scope * scope);
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static std::pair<bool, bool> checkCond(const Token * tok, bool& known);
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};
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/**
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* @brief Returns true if there is a path between the two tokens
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*
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* @param start Starting point of the path
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* @param dest The path destination
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* @param errorPath Adds the path traversal to the errorPath
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*/
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bool reaches(const Token * start, const Token * dest, const Library& library, ErrorPath* errorPath);
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#endif
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