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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQMLJSUTILS_P_H
#define QQMLJSUTILS_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#include <QtCore/qstring.h>
#include <QtCore/qstringview.h>
#include <QtCore/qstringbuilder.h>
#include <optional>
QT_BEGIN_NAMESPACE
struct QQmlJSUtils
{
/*! \internal
Returns escaped version of \a s. This function is mostly useful for code
generators.
*/
static QString escapeString(QString s)
{
return s.replace(u'\\', u"\\\\"_qs).replace(u'"', u"\\\""_qs).replace(u'\n', u"\\n"_qs);
}
/*! \internal
Returns \a s wrapped into a literal macro specified by \a ctor. By
default, returns a QStringLiteral-wrapped literal. This function is
mostly useful for code generators.
\note This function escapes \a s before wrapping it.
*/
static QString toLiteral(const QString &s, QStringView ctor = u"QStringLiteral")
{
return ctor + u"(\"" + escapeString(s) + u"\")";
}
/*! \internal
Returns \a type string conditionally wrapped into \c{const} and \c{&}.
This function is mostly useful for code generators.
*/
static QString constRefify(QString type)
{
if (!type.endsWith(u'*'))
type = u"const " + type + u"&";
return type;
}
/*! \internal
Returns a signal name from \a handlerName string.
*/
static std::optional<QString> signalName(QStringView handlerName)
{
if (handlerName.startsWith(u"on") && handlerName.size() > 2) {
QString signal = handlerName.mid(2).toString();
for (int i = 0; i < signal.length(); ++i) {
QChar &ch = signal[i];
if (ch.isLower())
return {};
if (ch.isUpper()) {
ch = ch.toLower();
return signal;
}
}
}
return {};
}
};
QT_END_NAMESPACE
#endif // QQMLJSUTILS_P_H
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