File indexing completed on 2024-04-28 03:56:53
0001 /* 0002 This file is part of the KDE libraries 0003 SPDX-FileCopyrightText: 2006 Thomas Braxton <brax108@cox.net> 0004 0005 SPDX-License-Identifier: LGPL-2.0-or-later 0006 */ 0007 0008 #ifndef KSERVICE_CONVERSION_CHECK_P_H 0009 #define KSERVICE_CONVERSION_CHECK_P_H 0010 0011 #include <QDate> 0012 #include <QPoint> 0013 #include <QRect> 0014 #include <QSize> 0015 #include <QString> 0016 #include <QUuid> 0017 #include <QVariant> 0018 0019 class QColor; 0020 class QFont; 0021 0022 // Copied from kconfigconversioncheck_p.h in KConfig 0023 namespace KServiceConversionCheck 0024 { 0025 // used to distinguish between supported/unsupported types 0026 struct supported { 0027 }; 0028 struct unsupported { 0029 }; 0030 0031 // traits type class to define support for constraints 0032 template<typename T> 0033 struct QVconvertible { 0034 typedef unsupported toQString; 0035 typedef unsupported toQVariant; 0036 }; 0037 0038 // constraint classes 0039 template<typename T> 0040 struct type_toQString { 0041 void constraint() 0042 { 0043 supported x = y; 0044 Q_UNUSED(x); 0045 } 0046 typename QVconvertible<T>::toQString y; 0047 }; 0048 0049 template<typename T> 0050 struct type_toQVariant { 0051 void constraint() 0052 { 0053 supported x = y; 0054 Q_UNUSED(x); 0055 } 0056 typename QVconvertible<T>::toQVariant y; 0057 }; 0058 0059 // check if T is convertible to QString thru QVariant 0060 // if not supported can't be used in QList<T> functions 0061 template<typename T> 0062 inline void to_QString() 0063 { 0064 void (type_toQString<T>::*x)() = &type_toQString<T>::constraint; 0065 Q_UNUSED(x); 0066 } 0067 0068 // check if T is convertible to QVariant & supported in readEntry/writeEntry 0069 template<typename T> 0070 inline void to_QVariant() 0071 { 0072 void (type_toQVariant<T>::*x)() = &type_toQVariant<T>::constraint; 0073 Q_UNUSED(x); 0074 } 0075 0076 // define for all types handled in readEntry/writeEntry 0077 // string_support - is supported by QVariant(type).toString(), 0078 // can be used in QList<T> functions 0079 // variant_support - has a QVariant constructor 0080 #define QVConversions(type, string_support, variant_support) \ 0081 template<> \ 0082 struct QVconvertible<type> { \ 0083 typedef string_support toQString; \ 0084 typedef variant_support toQVariant; \ 0085 } 0086 0087 // The only types needed here are the types handled in readEntry/writeEntry 0088 // the default QVconvertible will take care of the rest. 0089 QVConversions(bool, supported, supported); 0090 QVConversions(int, supported, supported); 0091 QVConversions(unsigned int, supported, supported); 0092 QVConversions(long long, supported, supported); 0093 QVConversions(unsigned long long, supported, supported); 0094 QVConversions(float, supported, supported); 0095 QVConversions(double, supported, supported); 0096 QVConversions(QString, supported, supported); 0097 QVConversions(QColor, unsupported, supported); 0098 QVConversions(QFont, supported, supported); 0099 QVConversions(QDateTime, unsupported, supported); 0100 QVConversions(QDate, unsupported, supported); 0101 QVConversions(QSize, unsupported, supported); 0102 QVConversions(QRect, unsupported, supported); 0103 QVConversions(QPoint, unsupported, supported); 0104 QVConversions(QSizeF, unsupported, supported); 0105 QVConversions(QRectF, unsupported, supported); 0106 QVConversions(QPointF, unsupported, supported); 0107 QVConversions(QByteArray, supported, supported); 0108 QVConversions(QStringList, unsupported, supported); 0109 QVConversions(QVariantList, unsupported, supported); 0110 QVConversions(QUrl, supported, supported); 0111 QVConversions(QList<QUrl>, unsupported, supported); 0112 QVConversions(QUuid, supported, supported); 0113 } 0114 0115 #endif