qt-creator/src/tools/clangbackend/ipcsource/clangtranslationunit.h

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** Copyright (C) 2016 The Qt Company Ltd.
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#pragma once

#include "clangtranslationunitupdater.h"

#include "clangtranslationunitcore.h"

#include <utf8stringvector.h>

#include <clang-c/Index.h>

#include <QSet>
#include <QtGlobal>

#include <chrono>
#include <memory>

class Utf8String;

namespace ClangBackEnd {

class TranslationUnitCore;
class TranslationUnitData;
class TranslationUnitUpdateResult;
class ProjectPart;
class FileContainer;
class TranslationUnits;

using time_point = std::chrono::steady_clock::time_point;

class TranslationUnit
{
public:
    enum FileExistsCheck {
        CheckIfFileExists,
        DoNotCheckIfFileExists
    };

    TranslationUnit() = default;
    TranslationUnit(const Utf8String &filePath,
                    const ProjectPart &projectPart,
                    const Utf8StringVector &fileArguments,
                    TranslationUnits &translationUnits,
                    FileExistsCheck fileExistsCheck = CheckIfFileExists);
    ~TranslationUnit();

    TranslationUnit(const TranslationUnit &cxTranslationUnit);
    TranslationUnit &operator=(const TranslationUnit &cxTranslationUnit);

    TranslationUnit(TranslationUnit &&cxTranslationUnit);
    TranslationUnit &operator=(TranslationUnit &&cxTranslationUnit);

    void reset();

    bool isNull() const;
    bool isIntact() const;

    Utf8String filePath() const;
    Utf8StringVector fileArguments() const;
    FileContainer fileContainer() const;

    Utf8String projectPartId() const;
    const ProjectPart &projectPart() const;
    const time_point lastProjectPartChangeTimePoint() const;
    bool isProjectPartOutdated() const;

    uint documentRevision() const;
    void setDocumentRevision(uint revision);

    bool isUsedByCurrentEditor() const;
    void setIsUsedByCurrentEditor(bool isUsedByCurrentEditor);

    bool isVisibleInEditor() const;
    void setIsVisibleInEditor(bool isVisibleInEditor);

    bool isNeedingReparse() const;
    void setDirtyIfProjectPartIsOutdated();
    void setDirtyIfDependencyIsMet(const Utf8String &filePath);

    TranslationUnitUpdateInput createUpdateInput() const;
    void incorporateUpdaterResult(const TranslationUnitUpdateResult &result) const;

    TranslationUnitCore translationUnitCore() const;

public: // for tests
    void parse() const;
    void reparse() const;
    const QSet<Utf8String> dependedFilePaths() const;
    TranslationUnitUpdater createUpdater() const;
    void setHasParseOrReparseFailed(bool hasFailed);
    time_point isNeededReparseChangeTimePoint() const;

private:
    void setDirty();

    void checkIfNull() const;
    void checkIfFileExists() const;

    bool fileExists() const;
    bool isMainFileAndExistsOrIsOtherFile(const Utf8String &filePath) const;

private:
    mutable std::shared_ptr<TranslationUnitData> d;
};

bool operator==(const TranslationUnit &first, const TranslationUnit &second);
void PrintTo(const TranslationUnit &translationUnit, ::std::ostream *os);
} // namespace ClangBackEnd