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QxStringCvt_Impl.h
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    00001 /****************************************************************************
    00002 **
    00003 ** http://www.qxorm.com/
    00004 ** http://sourceforge.net/projects/qxorm/
    00005 ** Original file by Lionel Marty
    00006 **
    00007 ** This file is part of the QxOrm library
    00008 **
    00009 ** This software is provided 'as-is', without any express or implied
    00010 ** warranty. In no event will the authors be held liable for any
    00011 ** damages arising from the use of this software.
    00012 **
    00013 ** GNU Lesser General Public License Usage
    00014 ** This file must be used under the terms of the GNU Lesser
    00015 ** General Public License version 2.1 as published by the Free Software
    00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
    00017 ** packaging of this file.  Please review the following information to
    00018 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00020 **
    00021 ** If you have questions regarding the use of this file, please contact :
    00022 ** contact@qxorm.com
    00023 **
    00024 ****************************************************************************/
    00025
    00026 #ifndef _QX_STRING_CVT_IMPL_H_
    00027 #define _QX_STRING_CVT_IMPL_H_
    00028
    00029 #ifdef _MSC_VER
    00030 #pragma once
    00031 #endif
    00032
    00033 #include <boost/lexical_cast.hpp>
    00034 #include <boost/mpl/if.hpp>
    00035 #include <boost/mpl/logical.hpp>
    00036 #include <boost/type_traits/is_pointer.hpp>
    00037 #include <boost/type_traits/is_enum.hpp>
    00038
    00039 #include <QxCommon/QxStringCvt.h>
    00040 #include <QxCommon/QxBool.h>
    00041
    00042 #include <QxDao/QxDateNeutral.h>
    00043 #include <QxDao/QxTimeNeutral.h>
    00044 #include <QxDao/QxDateTimeNeutral.h>
    00045
    00046 #include <QxCollection/QxCollection.h>
    00047
    00048 #include <QxRegister/QxClass.h>
    00049
    00050 #include <QxSerialize/QxArchive.h>
    00051
    00052 #include <QxTraits/is_smart_ptr.h>
    00053 #include <QxTraits/is_container.h>
    00054 #include <QxTraits/is_qx_registered.h>
    00055 #include <QxTraits/is_qt_variant_compatible.h>
    00056 #include <QxTraits/get_class_name_primitive.h>
    00057 #include <QxTraits/construct_ptr.h>
    00058 #include <QxTraits/generic_container.h>
    00059
    00060 #define QX_STR_CVT_QDATE_FORMAT        "yyyyMMdd"
    00061 #define QX_STR_CVT_QTIME_FORMAT        "hhmmsszzz"
    00062 #define QX_STR_CVT_QDATETIME_FORMAT    "yyyyMMddhhmmsszzz"
    00063
    00064 #if _QX_SERIALIZE_POLYMORPHIC
    00065 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::polymorphic_xml
    00066 #elif _QX_SERIALIZE_XML
    00067 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::xml
    00068 #elif _QX_SERIALIZE_TEXT
    00069 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::text
    00070 #elif _QX_SERIALIZE_BINARY
    00071 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::binary
    00072 #endif // _QX_SERIALIZE_XML
    00073
    00074 #define QX_STR_CVT_BY_USING_ARCHIVE_IMPL(className) \
    00075 namespace qx { namespace cvt { namespace detail { \
    00076 template <> struct QxStringCvt_ToString< className > { \
    00077 static inline QString toString(const className & t, const QString & format, int index) \
    00078 { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::to_string(t); } }; \
    00079 template <> struct QxStringCvt_FromString< className > { \
    00080 static inline qx_bool fromString(const QString & s, className & t, const QString & format, int index) \
    00081 { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::from_string(t, s); } }; \
    00082 } } } // namespace qx::cvt::detail
    00083
    00084 namespace qx {
    00085 namespace cvt {
    00086 namespace detail {
    00087
    00088 template <typename T>
    00089 struct QxStringCvtGeneric
    00090 {
    00091
    00092    static inline QString toString(const T & t, const QString & format, int index)
    00093    {
    00094       Q_UNUSED(format); Q_UNUSED(index); std::string s;
    00095       try { s = boost::lexical_cast<std::string>(t); }
    00096       catch (...) { qDebug("[QxOrm] %s", "'QxStringCvtGeneric::toString()' unknown error calling 'boost::lexical_cast<std::string>()'"); s = ""; }
    00097       return QString::fromStdString(s);
    00098    }
    00099
    00100    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00101    {
    00102       Q_UNUSED(format); Q_UNUSED(index);
    00103       try { t = boost::lexical_cast<T>(s.toStdString()); }
    00104       catch (...) { qDebug("[QxOrm] %s", "'QxStringCvtGeneric::fromString()' unknown error calling 'boost::lexical_cast<T>()'"); return qx_bool(false); }
    00105       return qx_bool(true);
    00106    }
    00107
    00108    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00109    { return cvtQVariant<qx::trait::is_qt_variant_compatible<T>::value, 0>::toVariant(t, format, index); }
    00110
    00111    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00112    { return cvtQVariant<qx::trait::is_qt_variant_compatible<T>::value, 0>::fromVariant(v, t, format, index); }
    00113
    00114 private:
    00115
    00116    template <bool isQVariantCompatible /* = false */, int dummy>
    00117    struct cvtQVariant
    00118    {
    00119       static inline QVariant toVariant(const T & t, const QString & format, int index)                { return qx::cvt::to_string(t, format, index); };
    00120       static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index) { return qx::cvt::from_string(v.toString(), t, format, index); };
    00121    };
    00122
    00123    template <int dummy>
    00124    struct cvtQVariant<true, dummy>
    00125    {
    00126       static inline QVariant toVariant(const T & t, const QString & format, int index)                { Q_UNUSED(format); Q_UNUSED(index); return QVariant(t); };
    00127       static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index) { Q_UNUSED(format); Q_UNUSED(index); t = v.value<T>(); return qx_bool(true); };
    00128    };
    00129
    00130 };
    00131
    00132 template <typename T>
    00133 struct QxStringCvtPtr
    00134 {
    00135
    00136    static inline QString toString(const T & t, const QString & format, int index)
    00137    { return (t ? qx::cvt::to_string((* t), format, index) : ""); }
    00138
    00139    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00140    { if (! t) { qx::trait::construct_ptr<T>::get(t); }; return (t ? qx::cvt::from_string(s, (* t), format, index) : qx_bool(false)); }
    00141
    00142    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00143    { return (t ? qx::cvt::to_variant((* t), format, index) : QVariant()); }
    00144
    00145    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00146    { if (! t && ! v.isNull()) { qx::trait::construct_ptr<T>::get(t); }; return (t ? qx::cvt::from_variant(v, (* t), format, index) : qx_bool(false)); }
    00147
    00148 };
    00149
    00150 template <typename T>
    00151 struct QxStringCvtRegistered
    00152 {
    00153
    00154    static inline QString toString(const T & t, const QString & format, int index)
    00155    { return (getId() ? getId()->toString((& t), format, index) : ""); }
    00156
    00157    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00158    { return (getId() ? getId()->fromString((& t), s, format, index) : qx_bool(false)); }
    00159
    00160    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00161    { return (getId() ? getId()->toVariant((& t), format, index) : QVariant()); }
    00162
    00163    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00164    { return (getId() ? getId()->fromVariant((& t), v, format, index) : qx_bool(false)); }
    00165
    00166 private:
    00167
    00168    static inline qx::IxDataMember * getId()
    00169    { return qx::QxClass<T>::getSingleton()->getDataMemberX()->getId_WithDaoStrategy(); }
    00170
    00171 };
    00172
    00173 template <typename T>
    00174 struct QxStringCvtContainer
    00175 {
    00176
    00177    static inline QString toString(const T & t, const QString & format, int index)
    00178    { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::to_string(t); }
    00179
    00180    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00181    { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::from_string(t, s); }
    00182
    00183    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00184    { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::to_string(t); }
    00185
    00186    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00187    { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::from_string(t, v.toString()); }
    00188
    00189 };
    00190
    00191 template <typename T>
    00192 struct QxStringCvtEnum
    00193 {
    00194
    00195    static inline QString toString(const T & t, const QString & format, int index)
    00196    { Q_UNUSED(format); Q_UNUSED(index); return QString::number(static_cast<long>(t)); }
    00197
    00198    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00199    { Q_UNUSED(format); Q_UNUSED(index); bool bOk = false; t = static_cast<T>(static_cast<long>(s.toLongLong(& bOk))); return bOk; }
    00200
    00201    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00202    { Q_UNUSED(format); Q_UNUSED(index); return QVariant(static_cast<qlonglong>(t)); }
    00203
    00204    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00205    { Q_UNUSED(format); Q_UNUSED(index); bool bOk = false; t = static_cast<T>(static_cast<long>(v.toLongLong(& bOk))); return bOk; }
    00206
    00207 };
    00208
    00209 template <typename T>
    00210 struct QxStringCvtHelper
    00211 {
    00212
    00213 private:
    00214
    00215    typedef typename boost::mpl::if_c< boost::is_pointer<T>::value, qx::cvt::detail::QxStringCvtPtr<T>, qx::cvt::detail::QxStringCvtGeneric<T> >::type type_str_cvt_helper_1;
    00216    typedef typename boost::mpl::if_c< qx::trait::is_smart_ptr<T>::value, qx::cvt::detail::QxStringCvtPtr<T>, type_str_cvt_helper_1 >::type type_str_cvt_helper_2;
    00217    typedef typename boost::mpl::if_c< qx::trait::is_container<T>::value, qx::cvt::detail::QxStringCvtContainer<T>, type_str_cvt_helper_2 >::type type_str_cvt_helper_3;
    00218    typedef typename boost::mpl::if_c< qx::trait::is_qx_registered<T>::value, qx::cvt::detail::QxStringCvtRegistered<T>, type_str_cvt_helper_3 >::type type_str_cvt_helper_4;
    00219    typedef typename boost::mpl::if_c< boost::is_enum<T>::value, qx::cvt::detail::QxStringCvtEnum<T>, type_str_cvt_helper_4 >::type type_str_cvt_helper_5;
    00220
    00221 public:
    00222
    00223    typedef typename QxStringCvtHelper<T>::type_str_cvt_helper_5 type;
    00224
    00225 };
    00226
    00227 template <typename T>
    00228 struct QxStringCvt_ToString {
    00229 static inline QString toString(const T & t, const QString & format, int index)
    00230 { return qx::cvt::detail::QxStringCvtHelper<T>::type::toString(t, format, index); } };
    00231
    00232 template <typename T>
    00233 struct QxStringCvt_FromString {
    00234 static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00235 { return qx::cvt::detail::QxStringCvtHelper<T>::type::fromString(s, t, format, index); } };
    00236
    00237 template <typename T>
    00238 struct QxStringCvt_ToVariant {
    00239 static inline QVariant toVariant(const T & t, const QString & format, int index)
    00240 { return qx::cvt::detail::QxStringCvtHelper<T>::type::toVariant(t, format, index); } };
    00241
    00242 template <typename T>
    00243 struct QxStringCvt_FromVariant {
    00244 static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00245 { return qx::cvt::detail::QxStringCvtHelper<T>::type::fromVariant(v, t, format, index); } };
    00246
    00247 } // namespace detail
    00248 } // namespace cvt
    00249 } // namespace qx
    00250
    00251 #include "../../inl/QxCommon/QxStringCvt_WithIndex.inl"
    00252 #include "../../inl/QxCommon/QxStringCvt_ToString.inl"
    00253 #include "../../inl/QxCommon/QxStringCvt_FromString.inl"
    00254 #include "../../inl/QxCommon/QxStringCvt_ToVariant.inl"
    00255 #include "../../inl/QxCommon/QxStringCvt_FromVariant.inl"
    00256 #include "../../inl/QxCommon/QxStringCvt_Qt.inl"
    00257
    00258 #endif // _QX_STRING_CVT_IMPL_H_