C++ Ptr::translationUnit方法代码示例

QString DoxygenGenerator::generate(QTextCursor cursor)
{
    const QChar &c = cursor.document()->characterAt(cursor.position());
    if (!c.isLetter() && c != QLatin1Char('_'))
        return QString();

    // Try to find what would be the declaration we are interested in.
    SimpleLexer lexer;
    QTextBlock block = cursor.block();
    while (block.isValid()) {
        const QString &text = block.text();
        const QList<Token> &tks = lexer(text);
        foreach (const Token &tk, tks) {
            if (tk.is(T_SEMICOLON) || tk.is(T_LBRACE)) {
                // No need to continue beyond this, we might already have something meaningful.
                cursor.setPosition(block.position() + tk.end(), QTextCursor::KeepAnchor);
                break;
            }
        }

        if (cursor.hasSelection())
            break;

        block = block.next();
    }

    if (!cursor.hasSelection())
        return QString();

    QString declCandidate = cursor.selectedText();
    declCandidate.replace(QChar::ParagraphSeparator, QLatin1Char('\n'));

    // Let's append a closing brace in the case we got content like 'class MyType {'
    if (declCandidate.endsWith(QLatin1Char('{')))
        declCandidate.append(QLatin1Char('}'));

    Document::Ptr doc = Document::create(QLatin1String("<doxygen>"));
    doc->setUtf8Source(declCandidate.toUtf8());
    doc->parse(Document::ParseDeclaration);
    doc->check(Document::FastCheck);

    if (!doc->translationUnit()
            || !doc->translationUnit()->ast()
            || !doc->translationUnit()->ast()->asDeclaration()) {
        return QString();
    }

    return generate(cursor, doc->translationUnit()->ast()->asDeclaration());
}

void tst_Misc::findBreakpoints3()
{
    const QByteArray src("\n"                       // line 0
                         "int foo() {\n"
                         "  try {\n"                // line 2
                         "    bar();\n"             // line 3
                         "  } catch (Mooze &m) {\n" // line 4
                         "    wooze();\n"           // line 5
                         "  }\n"
                         "  return 0;\n"            // line 7
                         "}\n"
                         );
    Document::Ptr doc = Document::create("findCatchBreakpoint");
    QVERIFY(!doc.isNull());
    doc->setUtf8Source(src);
    bool success = doc->parse();
    QVERIFY(success);
    QCOMPARE(doc->diagnosticMessages().size(), 0);
    FindCdbBreakpoint findBreakpoint(doc->translationUnit());

    QCOMPARE(findBreakpoint(2), 3U);
    QCOMPARE(findBreakpoint(3), 3U);
    QCOMPARE(findBreakpoint(4), 5U);
    QCOMPARE(findBreakpoint(5), 5U);
    QCOMPARE(findBreakpoint(7), 7U);
}

// Resolves auto and decltype initializer string
QList<LookupItem> TypeResolver::resolveDeclInitializer(
        CreateBindings &factory, const Declaration *decl,
        const QSet<const Declaration* > &declarationsBeingResolved,
        const Identifier *id)
{
    const StringLiteral *initializationString = decl->getInitializer();
    if (initializationString == 0)
        return QList<LookupItem>();

    const QByteArray &initializer =
            QByteArray::fromRawData(initializationString->chars(),
                                    initializationString->size()).trimmed();

    // Skip lambda-function initializers
    if (initializer.length() > 0 && initializer[0] == '[')
        return QList<LookupItem>();

    TypeOfExpression exprTyper;
    exprTyper.setExpandTemplates(true);
    Document::Ptr doc = factory.snapshot().document(QString::fromLocal8Bit(decl->fileName()));
    exprTyper.init(doc, factory.snapshot(), factory.sharedFromThis(), declarationsBeingResolved);

    Document::Ptr exprDoc =
            documentForExpression(exprTyper.preprocessedExpression(initializer));
    factory.addExpressionDocument(exprDoc);
    exprDoc->check();

    if (id) {
        DeduceAutoCheck deduceAuto(id, exprDoc->translationUnit());
        if (deduceAuto._block)
            return QList<LookupItem>();
    }

    return exprTyper(extractExpressionAST(exprDoc), exprDoc, decl->enclosingScope());
}

        static Document::Ptr create(const QByteArray &source)
        {
            LanguageFeatures features;
            features.objCEnabled = true;
            features.qtEnabled = false;
            features.qtKeywordsEnabled = false;
            features.qtMocRunEnabled = false;

            Document::Ptr document = Document::Ptr(new Document);
            document->translationUnit()->setLanguageFeatures(features);
            const QByteArray preprocessedSource = preprocess(source);
            document->translationUnit()->setSource(preprocessedSource.constData(),
                                                preprocessedSource.length());
            document->translationUnit()->parse();

            if (document->hasParsingErrors())
                return Document::Ptr();
            return document;
        }

void tst_Misc::findBreakpoints()
{
    const QByteArray src("\n"                   // line 0
                         "class C {\n"
                         "  int a;\n"
                         "  C():\n"
                         "    a(0)\n"           // line 4
                         "  {\n"                // line 5
                         "  }\n"
                         "  void empty()\n"     // line 7
                         "  {\n"                // line 8
                         "  }\n"
                         "  void misc()    \n"
                         "  {              \n"  // line 11
                         "    if (         \n"  // line 12
                         "          a      \n"  // line 13
                         "        &&       \n"  // line 14
                         "          b      \n"  // line 15
                         "       )         \n"  // line 16
                         "    {            \n"  // line 17
                         "    }            \n"  // line 18
                         "    while (      \n"  // line 19
                         "          a      \n"  // line 20
                         "        &&       \n"  // line 21
                         "          b      \n"  // line 22
                         "       )         \n"  // line 23
                         "    {            \n"  // line 24
                         "    }            \n"  // line 25
                         "    do {         \n"  // line 26
                         "    }            \n"  // line 27
                         "    while (      \n"  // line 28
                         "          a      \n"  // line 39
                         "        &&       \n"  // line 30
                         "          b      \n"  // line 31
                         "       );        \n"  // line 32
                         "  }              \n"
                         "};               \n"
                         );
    Document::Ptr doc = Document::create("findContstructorBreakpoint");
    QVERIFY(!doc.isNull());
    doc->setUtf8Source(src);
    bool success = doc->parse();
    QVERIFY(success);
    QCOMPARE(doc->diagnosticMessages().size(), 0);
    FindCdbBreakpoint findBreakpoint(doc->translationUnit());

    QCOMPARE(findBreakpoint(0), 5U);
    QCOMPARE(findBreakpoint(7), 8U);
    QCOMPARE(findBreakpoint(11), 16U);
    QCOMPARE(findBreakpoint(17), 23U);
    QCOMPARE(findBreakpoint(18), 23U);
}

void tst_Lookup::base_class_defined_1()
{
    Overview overview;

    const QByteArray source = "\n"
        "class base {};\n"
        "class derived: public base {};\n";

    Document::Ptr doc = Document::create("base_class_defined_1");
    doc->setSource(source);
    doc->parse();
    doc->check();

    QVERIFY(doc->diagnosticMessages().isEmpty());
    QCOMPARE(doc->globalSymbolCount(), 2U);

    Snapshot snapshot;
    snapshot.insert(doc->fileName(), doc);

    Document::Ptr emptyDoc = Document::create("<empty>");

    Class *baseClass = doc->globalSymbolAt(0)->asClass();
    QVERIFY(baseClass);

    Class *derivedClass = doc->globalSymbolAt(1)->asClass();
    QVERIFY(derivedClass);

    LookupContext ctx(derivedClass, emptyDoc, doc, snapshot);

    const QList<Symbol *> candidates =
        ctx.resolveClass(derivedClass->baseClassAt(0)->name());

    QCOMPARE(candidates.size(), 1);
    QCOMPARE(candidates.at(0), baseClass);

    TranslationUnit *unit = doc->translationUnit();
    QVERIFY(unit != 0);

    TranslationUnitAST *ast = unit->ast()->asTranslationUnit();
    QVERIFY(ast != 0);

    ClassSymbols classSymbols(doc->control());
    classSymbols(ast);

    QCOMPARE(classSymbols.size(), 2);

    const QMap<Class *, ClassSpecifierAST *> classToAST =
            invert(classSymbols.asMap());

    QVERIFY(classToAST.value(baseClass) != 0);
    QVERIFY(classToAST.value(derivedClass) != 0);
}

void tst_Lookup::base_class_defined_1()
{
    Overview overview;

    const QByteArray source = "\n"
        "class base {};\n"
        "class derived: public base {};\n";

    Document::Ptr doc = Document::create("base_class_defined_1");
    doc->setUtf8Source(source);
    doc->parse();
    doc->check();

    QVERIFY(doc->diagnosticMessages().isEmpty());
    QCOMPARE(doc->globalSymbolCount(), 2U);

    Snapshot snapshot;
    snapshot.insert(doc);

    Class *baseClass = doc->globalSymbolAt(0)->asClass();
    QVERIFY(baseClass);

    Class *derivedClass = doc->globalSymbolAt(1)->asClass();
    QVERIFY(derivedClass);

    const LookupContext ctx(doc, snapshot);

    LookupScope *klass = ctx.lookupType(derivedClass->baseClassAt(0)->name(), derivedClass->enclosingScope());
    QVERIFY(klass != 0);

    QCOMPARE(klass->symbols().size(), 1);
    QCOMPARE(klass->symbols().first(), baseClass);

    TranslationUnit *unit = doc->translationUnit();
    QVERIFY(unit != 0);

    TranslationUnitAST *ast = unit->ast()->asTranslationUnit();
    QVERIFY(ast != 0);

    ClassSymbols classSymbols(unit);
    classSymbols(ast);

    QCOMPARE(classSymbols.size(), 2);

    const QMap<Class *, ClassSpecifierAST *> classToAST =
            invert(classSymbols.asMap());

    QVERIFY(classToAST.value(baseClass) != 0);
    QVERIFY(classToAST.value(derivedClass) != 0);
}

/// Currently, we return the end of fileName.cpp
/// \todo take the definitions of the surrounding declarations into account
QList<InsertionLocation> InsertionPointLocator::methodDefinition(
    Declaration *declaration) const
{
    QList<InsertionLocation> result;
    if (!declaration)
        return result;

    const QString declFileName = QString::fromUtf8(declaration->fileName(),
                                                   declaration->fileNameLength());
    QString target = declFileName;
    if (!isSourceFile(declFileName)) {
        Internal::CppToolsPlugin *cpptools = Internal::CppToolsPlugin::instance();
        QString candidate = cpptools->correspondingHeaderOrSource(declFileName);
        if (!candidate.isEmpty())
            target = candidate;
    }

    Document::Ptr doc = m_refactoringChanges->file(target).cppDocument();
    if (doc.isNull())
        return result;

    Snapshot simplified = m_refactoringChanges->snapshot().simplified(doc);
    if (Symbol *s = simplified.findMatchingDefinition(declaration)) {
        if (Function *f = s->asFunction()) {
            if (f->isConst() == declaration->type().isConst()
                    && f->isVolatile() == declaration->type().isVolatile())
                return result;
        }
    }

    TranslationUnit *xUnit = doc->translationUnit();
    unsigned tokenCount = xUnit->tokenCount();
    if (tokenCount < 2) // no tokens available
        return result;

    unsigned line = 0, column = 0;
    xUnit->getTokenEndPosition(xUnit->tokenCount() - 2, &line, &column);

    const QLatin1String prefix("\n\n");
    result.append(InsertionLocation(target, prefix, QString(), line, column));

    return result;
}

Utils::ChangeSet FunctionDeclDefLink::changes(const Snapshot &snapshot, int targetOffset)
{
    Utils::ChangeSet changes;

    // parse the current source declaration
    TypeOfExpression typeOfExpression; // ### just need to preprocess...
    typeOfExpression.init(sourceDocument, snapshot);

    QString newDeclText = linkSelection.selectedText();
    for (int i = 0; i < newDeclText.size(); ++i) {
        if (newDeclText.at(i).toAscii() == 0)
            newDeclText[i] = QLatin1Char('\n');
    }
    newDeclText.append(QLatin1String("{}"));
    const QString newDeclTextPreprocessed = typeOfExpression.preprocess(newDeclText);

    Document::Ptr newDeclDoc = Document::create(QLatin1String("<decl>"));
    newDeclDoc->setSource(newDeclTextPreprocessed.toUtf8());
    newDeclDoc->parse(Document::ParseDeclaration);
    newDeclDoc->check();

    // extract the function symbol
    if (!newDeclDoc->translationUnit()->ast())
        return changes;
    FunctionDefinitionAST *newDef = newDeclDoc->translationUnit()->ast()->asFunctionDefinition();
    if (!newDef)
        return changes;
    Function *newFunction = newDef->symbol;
    if (!newFunction)
        return changes;

    Overview overview;
    overview.setShowReturnTypes(true);
    overview.setShowTemplateParameters(true);
    overview.setShowArgumentNames(true);
    overview.setShowFunctionSignatures(true);

    // abort if the name of the newly parsed function is not the expected one
    DeclaratorIdAST *newDeclId = getDeclaratorId(newDef->declarator);
    if (!newDeclId || !newDeclId->name || !newDeclId->name->name
            || overview(newDeclId->name->name) != nameInitial) {
        return changes;
    }

    LookupContext sourceContext(sourceDocument, snapshot);
    LookupContext targetContext(targetFile->cppDocument(), snapshot);

    // sync return type
    {
        // set up for rewriting return type
        SubstitutionEnvironment env;
        env.setContext(sourceContext);
        env.switchScope(sourceFunction->enclosingScope());
        ClassOrNamespace *targetCoN = targetContext.lookupType(targetFunction->enclosingScope());
        if (!targetCoN)
            targetCoN = targetContext.globalNamespace();
        UseMinimalNames q(targetCoN);
        env.enter(&q);
        Control *control = sourceContext.control().data();

        // get return type start position and declarator info from declaration
        DeclaratorAST *declarator = 0;
        SpecifierAST *firstReplaceableSpecifier = 0;
        TranslationUnit *targetTranslationUnit = targetFile->cppDocument()->translationUnit();
        if (SimpleDeclarationAST *simple = targetDeclaration->asSimpleDeclaration()) {
            declarator = simple->declarator_list->value;
            firstReplaceableSpecifier = findFirstReplaceableSpecifier(
                        targetTranslationUnit, simple->decl_specifier_list);
        } else if (FunctionDefinitionAST *def = targetDeclaration->asFunctionDefinition()) {
            declarator = def->declarator;
            firstReplaceableSpecifier = findFirstReplaceableSpecifier(
                        targetTranslationUnit, def->decl_specifier_list);
        }

        int returnTypeStart = 0;
        if (firstReplaceableSpecifier)
            returnTypeStart = targetFile->startOf(firstReplaceableSpecifier);
        else
            returnTypeStart = targetFile->startOf(declarator);

        if (!newFunction->returnType().isEqualTo(sourceFunction->returnType())
                && !newFunction->returnType().isEqualTo(targetFunction->returnType())) {
            FullySpecifiedType type = rewriteType(newFunction->returnType(), &env, control);
            const QString replacement = overview(type, targetFunction->name());
            changes.replace(returnTypeStart,
                            targetFile->startOf(targetFunctionDeclarator->lparen_token),
                            replacement);
        }
    }

    // sync parameters
    {
        // set up for rewriting parameter types
        SubstitutionEnvironment env;
        env.setContext(sourceContext);
        env.switchScope(sourceFunction);
        ClassOrNamespace *targetCoN = targetContext.lookupType(targetFunction);
        if (!targetCoN)
            targetCoN = targetContext.globalNamespace();
        UseMinimalNames q(targetCoN);
//.........这里部分代码省略.........