moc.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

                            while (funcDef.arguments.size() > 0 && funcDef.arguments.last().isDefault) {
                                funcDef.wasCloned = true;
                                funcDef.arguments.removeLast();
                                def.methodList += funcDef;
                            }
                        }
                    } else {
                        index = rewind;
                    }
                }
            }

            next(RBRACE);

            if (!def.hasQObject && def.signalList.isEmpty() && def.slotList.isEmpty()
                && def.propertyList.isEmpty() && def.enumDeclarations.isEmpty())
                continue; // no meta object code required


            if (!def.hasQObject && !def.hasQGadget)
                error("Class declarations lacks Q_OBJECT macro.");

            classList += def;
        }
    }

}

void Moc::generate(FILE *out)
{

    QDateTime dt = QDateTime::currentDateTime();
    QByteArray dstr = dt.toString().toLatin1();
    QByteArray fn = filename;
    int i = filename.length()-1;
    while (i>0 && filename[i-1] != '/' && filename[i-1] != '\\')
        --i;                                // skip path
    if (i >= 0)
        fn = filename.mid(i);
    fprintf(out, "/****************************************************************************\n"
            "** Meta object code from reading C++ file '%s'\n**\n" , (const char*)fn);
    fprintf(out, "** Created: %s\n"
            "**      by: The Qt Meta Object Compiler version %d (Qt %s)\n**\n" , dstr.data(), mocOutputRevision, QT_VERSION_STR);
    fprintf(out, "** WARNING! All changes made in this file will be lost!\n"
            "*****************************************************************************/\n\n");


    if (!noInclude) {
        if (includePath.size() && includePath.right(1) != "/")
            includePath += "/";
        for (int i = 0; i < includeFiles.size(); ++i) {
            QByteArray inc = includeFiles.at(i);
            if (inc[0] != '<' && inc[0] != '"') {
                if (includePath.size() && includePath != "./")
                    inc.prepend(includePath);
                inc = "\"" + inc + "\"";
            }
            fprintf(out, "#include %s\n", inc.constData());
        }
    }
    if (classList.size() && classList.first().classname == "Qt")
        fprintf(out, "#include <QtCore/qobject.h>\n");

    fprintf(out, "#if !defined(Q_MOC_OUTPUT_REVISION)\n"
            "#error \"The header file '%s' doesn't include <QObject>.\"\n", (const char *)fn);
    fprintf(out, "#elif Q_MOC_OUTPUT_REVISION != %d\n", mocOutputRevision);
    fprintf(out, "#error \"This file was generated using the moc from %s."
            " It\"\n#error \"cannot be used with the include files from"
            " this version of Qt.\"\n#error \"(The moc has changed too"
            " much.)\"\n", QT_VERSION_STR);
    fprintf(out, "#endif\n\n");


    for (i = 0; i < classList.size(); ++i) {
        Generator generator(out, &classList[i]);
        generator.generateCode();
    }
}



void Moc::parseSlots(ClassDef *def, FunctionDef::Access access)
{
    next(COLON);
    while (inClass(def) && hasNext()) {
        switch (next()) {
        case PUBLIC:
        case PROTECTED:
        case PRIVATE:
        case SIGNALS:
        case SLOTS:
            prev();
            return;
        case SEMIC:
            continue;
        case FRIEND:
            until(SEMIC);
            continue;
        case USING:
            error("'using' directive not supported in 'slots' section");
        default:
            prev();
        }

        FunctionDef funcDef;
        funcDef.access = access;
        if (!parseFunction(&funcDef))
            continue;
        def->slotList += funcDef;
        while (funcDef.arguments.size() > 0 && funcDef.arguments.last().isDefault) {
            funcDef.wasCloned = true;
            funcDef.arguments.removeLast();
            def->slotList += funcDef;
        }
    }
}

void Moc::parseSignals(ClassDef *def)
{
    next(COLON);
    while (inClass(def) && hasNext()) {
        switch (next()) {
        case PUBLIC:
        case PROTECTED:
        case PRIVATE:
        case SIGNALS:
        case SLOTS:
            prev();
            return;
        case SEMIC:
            continue;
        case FRIEND:
            until(SEMIC);
            continue;
        case USING:
            error("'using' directive not supported in 'signals' section");
        default:
            prev();
        }
        FunctionDef funcDef;
        funcDef.access = FunctionDef::Protected;
        parseFunction(&funcDef);
        if (funcDef.isVirtual)
            error("Signals cannot be declared virtual");
        if (funcDef.inlineCode)
            error("Not a signal declaration");
        def->signalList += funcDef;
        while (funcDef.arguments.size() > 0 && funcDef.arguments.last().isDefault) {
            funcDef.wasCloned = true;
            funcDef.arguments.removeLast();
            def->signalList += funcDef;
        }
    }
}


void Moc::parseProperty(ClassDef *def)
{
    next(LPAREN);
    PropertyDef propDef;
    QByteArray type = parseType().name;
    if (type.isEmpty())
        error();
    propDef.designable = propDef.scriptable = propDef.stored = "true";
    propDef.user = "false";
    /*
      The Q_PROPERTY construct cannot contain any commas, since
      commas separate macro arguments. We therefore expect users
      to type "QMap" instead of "QMap<QString, QVariant>". For
      coherence, we also expect the same for
      QValueList<QVariant>, the other template class supported by
      QVariant.
    */
    type = normalizeType(type);
    if (type == "QMap")
        type = "QMap<QString,QVariant>";
    else if (type == "QValueList")
        type = "QValueList<QVariant>";
    else if (type == "LongLong")
        type = "qlonglong";
    else if (type == "ULongLong")
        type = "qulonglong";
    propDef.type = type;

    next();
    propDef.name = lexem();
    while (test(IDENTIFIER)) {
        QByteArray l = lexem();
        QByteArray v, v2;
        if (test(LPAREN)) {
            v = lexemUntil(RPAREN);
        } else {
            next(IDENTIFIER);
            v = lexem();
            if (test(LPAREN))
                v2 = lexemUntil(RPAREN);
            else if (v != "true" && v != "false")
                v2 = "()";
        }
        switch (l[0]) {
        case 'R':
            if (l == "READ")
                propDef.read = v;
            else if (l == "RESET")
                propDef.reset = v + v2;
            else
                error(2);
            break;
        case 'S':
            if (l == "SCRIPTABLE")
                propDef.scriptable = v + v2;
            else if (l == "STORED")
                propDef.stored = v + v2;
            else
                error(2);
            break;
        case 'W': if (l != "WRITE") error(2);
            propDef.write = v;
            break;
        case 'D': if (l != "DESIGNABLE") error(2);
            propDef.designable = v + v2;
            break;
        case 'E': if (l != "EDITABLE") error(2);
            propDef.editable = v + v2;
            break;
        case 'N': if (l != "NOTIFY") error(2);
            break;
        case 'U': if (l != "USER") error(2);
            propDef.user = v + v2;
            break;
        default:
            error(2);
        }
    }
    next(RPAREN);
    def->propertyList += propDef;
}

void Moc::parseEnumOrFlag(ClassDef *def, bool isFlag)
{
    next(LPAREN);
    QByteArray identifier;
    while (test(IDENTIFIER)) {
        identifier = lexem();
        while (test(SCOPE) && test(IDENTIFIER)) {
            identifier += "::";
            identifier += lexem();
        }
        def->enumDeclarations[identifier] = isFlag;
    }
    next(RPAREN);
}

void Moc::parseFlag(ClassDef *def)
{
    next(LPAREN);
    QByteArray flagName, enumName;
    while (test(IDENTIFIER)) {
        flagName = lexem();
        while (test(SCOPE) && test(IDENTIFIER)) {
            flagName += "::";
            flagName += lexem();
        }
    }
    next(COMMA);
    while (test(IDENTIFIER)) {
        enumName = lexem();
        while (test(SCOPE) && test(IDENTIFIER)) {
            enumName += "::";
            enumName += lexem();
        }
    }

    def->flagAliases.insert(enumName, flagName);
    next(RPAREN);
}

void Moc::parseClassInfo(ClassDef *def)
{
    next(LPAREN);
    ClassInfoDef infoDef;
    next(STRING_LITERAL);
    infoDef.name = symbol().unquotedLexem();
    next(COMMA);
    if (test(STRING_LITERAL)) {
        infoDef.value = symbol().unquotedLexem();
    } else {
        // support Q_CLASSINFO("help", QT_TR_NOOP("blah"))
        next(IDENTIFIER);
        next(LPAREN);
        next(STRING_LITERAL);
        infoDef.value = symbol().unquotedLexem();
        next(RPAREN);
    }
    next(RPAREN);
    def->classInfoList += infoDef;
}

void Moc::parseInterfaces(ClassDef *def)
{
    next(LPAREN);
    while (test(IDENTIFIER)) {
        QList<ClassDef::Interface> iface;
        iface += ClassDef::Interface(lexem());
        while (test(SCOPE)) {
            iface.last().className += lexem();
            next(IDENTIFIER);
            iface.last().className += lexem();
        }
        while (test(COLON)) {
            next(IDENTIFIER);
            iface += ClassDef::Interface(lexem());
            while (test(SCOPE)) {
                iface.last().className += lexem();
                next(IDENTIFIER);
                iface.last().className += lexem();
            }
        }
        // resolve from classnames to interface ids
        for (int i = 0; i < iface.count(); ++i) {
            const QByteArray iid = interface2IdMap.value(iface.at(i).className);
            if (iid.isEmpty())
                error("Undefined interface");

            iface[i].interfaceId = iid;
        }
        def->interfaceList += iface;
    }
    next(RPAREN);
}

void Moc::parseDeclareInterface()
{
    next(LPAREN);
    QByteArray interface;
    next(IDENTIFIER);
    interface += lexem();
    while (test(SCOPE)) {
        interface += lexem();
        next(IDENTIFIER);
        interface += lexem();
    }
    next(COMMA);
    QByteArray iid;
    if (test(STRING_LITERAL)) {
        iid = symbol().lexem();
    } else {
        next(IDENTIFIER);
        iid = lexem();
    }
    interface2IdMap.insert(interface, iid);
    next(RPAREN);
}

void Moc::parseSlotInPrivate(ClassDef *def, FunctionDef::Access access)
{
    next(LPAREN);
    FunctionDef funcDef;
    next(IDENTIFIER);
    funcDef.inPrivateClass = lexem();
    // also allow void functions
    if (test(LPAREN)) {
        next(RPAREN);
        funcDef.inPrivateClass += "()";
    }
    next(COMMA);
    funcDef.access = access;
    parseFunction(&funcDef, true);
    def->slotList += funcDef;
    while (funcDef.arguments.size() > 0 && funcDef.arguments.last().isDefault) {
        funcDef.wasCloned = true;
        funcDef.arguments.removeLast();
        def->slotList += funcDef;
    }
}