C++ Overview::setShowReturnTypes方法代码示例

CppDeclarableElement::CppDeclarableElement(Symbol *declaration) : CppElement()
{
    m_icon = Icons().iconForSymbol(declaration);

    Overview overview;
    overview.setShowArgumentNames(true);
    overview.setShowReturnTypes(true);
    m_name = overview.prettyName(declaration->name());
    if (declaration->enclosingScope()->isClass() ||
        declaration->enclosingScope()->isNamespace() ||
        declaration->enclosingScope()->isEnum()) {
        m_qualifiedName = overview.prettyName(LookupContext::fullyQualifiedName(declaration));
        setHelpIdCandidates(stripName(m_qualifiedName));
    } else {
        m_qualifiedName = m_name;
        setHelpIdCandidates(QStringList(m_name));
    }

    setTooltip(overview.prettyType(declaration->type(), m_qualifiedName));
    setLink(CPPEditorWidget::linkToSymbol(declaration));
    setHelpMark(m_name);
}

void TypePrettyPrinter::visit(Function *type)
{
    if (_needsParens) {
        _text.prepend(QLatin1Char('('));
        if (! _name.isEmpty()) {
            appendSpace();
            _text.append(_name);
            _name.clear();
        }
        _text.append(QLatin1Char(')'));
        _needsParens = false;
    } else if (! _name.isEmpty() && _overview->showFunctionSignatures()) {
        appendSpace();
        _text.append(_name);
        _name.clear();
    }

    if (_overview->showReturnTypes()) {
        const QString returnType = _overview->prettyType(type->returnType());
        if (!returnType.isEmpty()) {
            if (!endsWithPtrOrRef(returnType))
                _text.prepend(QLatin1Char(' '));
            _text.prepend(returnType);
        }
    }

    if (_overview->showFunctionSignatures()) {
        Overview argumentText;
        argumentText.setShowReturnTypes(true);
        argumentText.setShowArgumentNames(false);
        argumentText.setShowFunctionSignatures(true);

        _text += QLatin1Char('(');

        for (unsigned index = 0; index < type->argumentCount(); ++index) {
            if (index != 0)
                _text += QLatin1String(", ");

            if (Argument *arg = type->argumentAt(index)->asArgument()) {
                if (index + 1 == _overview->markedArgument())
                    const_cast<Overview*>(_overview)->setMarkedArgumentBegin(_text.length());

                const Name *name = 0;

                if (_overview->showArgumentNames())
                    name = arg->name();

                _text += argumentText(arg->type(), name);

                if (_overview->showDefaultArguments()) {
                    if (const StringLiteral *initializer = arg->initializer()) {
                        _text += QLatin1String(" =");
                        _text += QString::fromUtf8(initializer->chars(), initializer->size());
                    }
                }

                if (index + 1 == _overview->markedArgument())
                    const_cast<Overview*>(_overview)->setMarkedArgumentEnd(_text.length());
            }
        }

        if (type->isVariadic())
            _text += QLatin1String("...");

        _text += QLatin1Char(')');
        if (type->isConst()) {
            appendSpace();
            _text += "const";
        }
        if (type->isVolatile()) {
            appendSpace();
            _text += "volatile";
        }
    }
}

void TypePrettyPrinter::visit(Function *type)
{
    if (_overview->showReturnTypes())
        _text += _overview->prettyType(type->returnType());

    if (! _ptrOperators.isEmpty()) {
        _text += QLatin1Char('(');
        applyPtrOperators(false);

        if (! _name.isEmpty()) {
            _text += _name;
            _name.clear();
        }

        _text += QLatin1Char(')');

    } else if (! _name.isEmpty() && _overview->showFunctionSignatures()) {
        space();
        _text += _name;
        _name.clear();
    }

    if (_overview->showFunctionSignatures()) {
        Overview argumentText;
        argumentText.setShowReturnTypes(true);
        argumentText.setShowArgumentNames(false);
        argumentText.setShowFunctionSignatures(true);

        _text += QLatin1Char('(');

        for (unsigned index = 0; index < type->argumentCount(); ++index) {
            if (index != 0)
                _text += QLatin1String(", ");

            if (Argument *arg = type->argumentAt(index)->asArgument()) {
                if (index + 1 == _overview->markedArgument())
                    const_cast<Overview*>(_overview)->setMarkedArgumentBegin(_text.length());

                Name *name = 0;

                if (_overview->showArgumentNames())
                    name = arg->name();

                _text += argumentText(arg->type(), name);

                if (index + 1 == _overview->markedArgument())
                    const_cast<Overview*>(_overview)->setMarkedArgumentEnd(_text.length());
            }
        }

        if (type->isVariadic())
            _text += QLatin1String("...");

        _text += QLatin1Char(')');
        if (type->isConst() && type->isVolatile()) {
            space();
            _text += "const volatile";
        } else if (type->isConst()) {
            space();
            _text += "const";
        } else if (type->isVolatile()) {
            space();
            _text += "volatile";
        }
    }
}

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.........