72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
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#ifndef GUARD_PATHANALYSIS_H
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#define GUARD_PATHANALYSIS_H
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#include <functional>
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#include "errorlogger.h"
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#include "utils.h"
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class Library;
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class Settings;
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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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template<class F>
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void forwardAll(F f) {
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forward([&](const Info& info) {
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f(info);
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return Progress::Continue;
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});
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}
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template<class Predicate>
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Info forwardFind(Predicate pred) {
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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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Progress forwardRecursive(const Token* tok, Info info, const std::function<PathAnalysis::Progress(const Info&)>& f) const;
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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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