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QxStringCvt_Impl.h
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    00001 /****************************************************************************
    00002 **
    00003 ** http://www.qxorm.com/
    00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
    00005 **
    00006 ** This file is part of the QxOrm library
    00007 **
    00008 ** This software is provided 'as-is', without any express or implied
    00009 ** warranty. In no event will the authors be held liable for any
    00010 ** damages arising from the use of this software
    00011 **
    00012 ** Commercial Usage
    00013 ** Licensees holding valid commercial QxOrm licenses may use this file in
    00014 ** accordance with the commercial license agreement provided with the
    00015 ** Software or, alternatively, in accordance with the terms contained in
    00016 ** a written agreement between you and Lionel Marty
    00017 **
    00018 ** GNU General Public License Usage
    00019 ** Alternatively, this file may be used under the terms of the GNU
    00020 ** General Public License version 3.0 as published by the Free Software
    00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the
    00022 ** packaging of this file. Please review the following information to
    00023 ** ensure the GNU General Public License version 3.0 requirements will be
    00024 ** met : http://www.gnu.org/copyleft/gpl.html
    00025 **
    00026 ** If you are unsure which license is appropriate for your use, or
    00027 ** if you have questions regarding the use of this file, please contact :
    00028 ** contact@qxorm.com
    00029 **
    00030 ****************************************************************************/
    00031
    00032 #ifndef _QX_STRING_CVT_IMPL_H_
    00033 #define _QX_STRING_CVT_IMPL_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00039 #include <boost/lexical_cast.hpp>
    00040 #include <boost/mpl/if.hpp>
    00041 #include <boost/mpl/logical.hpp>
    00042 #include <boost/type_traits/is_pointer.hpp>
    00043 #include <boost/type_traits/is_enum.hpp>
    00044
    00045 #include <QxCommon/QxStringCvt.h>
    00046 #include <QxCommon/QxBool.h>
    00047
    00048 #include <QxDao/QxDateNeutral.h>
    00049 #include <QxDao/QxTimeNeutral.h>
    00050 #include <QxDao/QxDateTimeNeutral.h>
    00051
    00052 #include <QxCollection/QxCollection.h>
    00053
    00054 #include <QxRegister/QxClass.h>
    00055
    00056 #include <QxSerialize/QxArchive.h>
    00057
    00058 #include <QxTraits/is_smart_ptr.h>
    00059 #include <QxTraits/is_container.h>
    00060 #include <QxTraits/is_qx_registered.h>
    00061 #include <QxTraits/is_qt_variant_compatible.h>
    00062 #include <QxTraits/get_class_name_primitive.h>
    00063 #include <QxTraits/construct_ptr.h>
    00064 #include <QxTraits/generic_container.h>
    00065
    00066 #define QX_STR_CVT_QDATE_FORMAT        "yyyyMMdd"
    00067 #define QX_STR_CVT_QTIME_FORMAT        "hhmmsszzz"
    00068 #define QX_STR_CVT_QDATETIME_FORMAT    "yyyyMMddhhmmsszzz"
    00069
    00070 #if _QX_SERIALIZE_POLYMORPHIC
    00071 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::polymorphic_xml
    00072 #elif _QX_SERIALIZE_XML
    00073 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::xml
    00074 #elif _QX_SERIALIZE_TEXT
    00075 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::text
    00076 #elif _QX_SERIALIZE_BINARY
    00077 #define QX_STR_CVT_DEFAULT_ARCHIVE     qx::serialization::binary
    00078 #endif // _QX_SERIALIZE_XML
    00079
    00080 #define QX_STR_CVT_BY_USING_ARCHIVE_IMPL(className) \
    00081 namespace qx { namespace cvt { namespace detail { \
    00082 template <> struct QxStringCvt_ToString< className > { \
    00083 static inline QString toString(const className & t, const QString & format, int index) \
    00084 { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::to_string(t); } }; \
    00085 template <> struct QxStringCvt_FromString< className > { \
    00086 static inline qx_bool fromString(const QString & s, className & t, const QString & format, int index) \
    00087 { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::from_string(t, s); } }; \
    00088 } } } // namespace qx::cvt::detail
    00089
    00090 namespace qx {
    00091 namespace cvt {
    00092 namespace detail {
    00093
    00094 template <typename T>
    00095 struct QxStringCvtGeneric
    00096 {
    00097
    00098    static inline QString toString(const T & t, const QString & format, int index)
    00099    {
    00100       Q_UNUSED(format); Q_UNUSED(index); std::string s;
    00101       try { s = boost::lexical_cast<std::string>(t); }
    00102       catch (...) { qDebug("[QxOrm] %s", "'QxStringCvtGeneric::toString()' unknown error calling 'boost::lexical_cast<std::string>()'"); s = ""; }
    00103       return QString::fromStdString(s);
    00104    }
    00105
    00106    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00107    {
    00108       Q_UNUSED(format); Q_UNUSED(index);
    00109       try { t = boost::lexical_cast<T>(s.toStdString()); }
    00110       catch (...) { qDebug("[QxOrm] %s", "'QxStringCvtGeneric::fromString()' unknown error calling 'boost::lexical_cast<T>()'"); return qx_bool(false); }
    00111       return qx_bool(true);
    00112    }
    00113
    00114    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00115    { return cvtQVariant<qx::trait::is_qt_variant_compatible<T>::value, 0>::toVariant(t, format, index); }
    00116
    00117    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00118    { return cvtQVariant<qx::trait::is_qt_variant_compatible<T>::value, 0>::fromVariant(v, t, format, index); }
    00119
    00120 private:
    00121
    00122    template <bool isQVariantCompatible /* = false */, int dummy>
    00123    struct cvtQVariant
    00124    {
    00125       static inline QVariant toVariant(const T & t, const QString & format, int index)                { return qx::cvt::to_string(t, format, index); };
    00126       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); };
    00127    };
    00128
    00129    template <int dummy>
    00130    struct cvtQVariant<true, dummy>
    00131    {
    00132       static inline QVariant toVariant(const T & t, const QString & format, int index)                { Q_UNUSED(format); Q_UNUSED(index); return QVariant(t); };
    00133       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); };
    00134    };
    00135
    00136 };
    00137
    00138 template <typename T>
    00139 struct QxStringCvtPtr
    00140 {
    00141
    00142    static inline QString toString(const T & t, const QString & format, int index)
    00143    { return (t ? qx::cvt::to_string((* t), format, index) : ""); }
    00144
    00145    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00146    { if (! t) { qx::trait::construct_ptr<T>::get(t); }; return (t ? qx::cvt::from_string(s, (* t), format, index) : qx_bool(false)); }
    00147
    00148    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00149    { return (t ? qx::cvt::to_variant((* t), format, index) : QVariant()); }
    00150
    00151    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00152    { if (! t && ! v.isNull()) { qx::trait::construct_ptr<T>::get(t); }; return (t ? qx::cvt::from_variant(v, (* t), format, index) : qx_bool(false)); }
    00153
    00154 };
    00155
    00156 template <typename T>
    00157 struct QxStringCvtRegistered
    00158 {
    00159
    00160    static inline QString toString(const T & t, const QString & format, int index)
    00161    { return (getId() ? getId()->toString((& t), format, index) : ""); }
    00162
    00163    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00164    { return (getId() ? getId()->fromString((& t), s, format, index) : qx_bool(false)); }
    00165
    00166    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00167    { return (getId() ? getId()->toVariant((& t), format, index) : QVariant()); }
    00168
    00169    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00170    { return (getId() ? getId()->fromVariant((& t), v, format, index) : qx_bool(false)); }
    00171
    00172 private:
    00173
    00174    static inline qx::IxDataMember * getId()
    00175    { return qx::QxClass<T>::getSingleton()->getDataMemberX()->getId_WithDaoStrategy(); }
    00176
    00177 };
    00178
    00179 template <typename T>
    00180 struct QxStringCvtContainer
    00181 {
    00182
    00183    static inline QString toString(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 fromString(const QString & s, T & t, const QString & format, int index)
    00187    { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::from_string(t, s); }
    00188
    00189    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00190    { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::to_string(t); }
    00191
    00192    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00193    { Q_UNUSED(format); Q_UNUSED(index); return QX_STR_CVT_DEFAULT_ARCHIVE::from_string(t, v.toString()); }
    00194
    00195 };
    00196
    00197 template <typename T>
    00198 struct QxStringCvtEnum
    00199 {
    00200
    00201    static inline QString toString(const T & t, const QString & format, int index)
    00202    { Q_UNUSED(format); Q_UNUSED(index); return QString::number(static_cast<long>(t)); }
    00203
    00204    static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00205    { Q_UNUSED(format); Q_UNUSED(index); bool bOk = false; t = static_cast<T>(static_cast<long>(s.toLongLong(& bOk))); return bOk; }
    00206
    00207    static inline QVariant toVariant(const T & t, const QString & format, int index)
    00208    { Q_UNUSED(format); Q_UNUSED(index); return QVariant(static_cast<qlonglong>(t)); }
    00209
    00210    static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00211    { Q_UNUSED(format); Q_UNUSED(index); bool bOk = false; t = static_cast<T>(static_cast<long>(v.toLongLong(& bOk))); return bOk; }
    00212
    00213 };
    00214
    00215 template <typename T>
    00216 struct QxStringCvtHelper
    00217 {
    00218
    00219 private:
    00220
    00221    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;
    00222    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;
    00223    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;
    00224    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;
    00225    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;
    00226
    00227 public:
    00228
    00229    typedef typename QxStringCvtHelper<T>::type_str_cvt_helper_5 type;
    00230
    00231 };
    00232
    00233 template <typename T>
    00234 struct QxStringCvt_ToString {
    00235 static inline QString toString(const T & t, const QString & format, int index)
    00236 { return qx::cvt::detail::QxStringCvtHelper<T>::type::toString(t, format, index); } };
    00237
    00238 template <typename T>
    00239 struct QxStringCvt_FromString {
    00240 static inline qx_bool fromString(const QString & s, T & t, const QString & format, int index)
    00241 { return qx::cvt::detail::QxStringCvtHelper<T>::type::fromString(s, t, format, index); } };
    00242
    00243 template <typename T>
    00244 struct QxStringCvt_ToVariant {
    00245 static inline QVariant toVariant(const T & t, const QString & format, int index)
    00246 { return qx::cvt::detail::QxStringCvtHelper<T>::type::toVariant(t, format, index); } };
    00247
    00248 template <typename T>
    00249 struct QxStringCvt_FromVariant {
    00250 static inline qx_bool fromVariant(const QVariant & v, T & t, const QString & format, int index)
    00251 { return qx::cvt::detail::QxStringCvtHelper<T>::type::fromVariant(v, t, format, index); } };
    00252
    00253 } // namespace detail
    00254 } // namespace cvt
    00255 } // namespace qx
    00256
    00257 #include "../../inl/QxCommon/QxStringCvt_WithIndex.inl"
    00258 #include "../../inl/QxCommon/QxStringCvt_ToString.inl"
    00259 #include "../../inl/QxCommon/QxStringCvt_FromString.inl"
    00260 #include "../../inl/QxCommon/QxStringCvt_ToVariant.inl"
    00261 #include "../../inl/QxCommon/QxStringCvt_FromVariant.inl"
    00262 #include "../../inl/QxCommon/QxStringCvt_Qt.inl"
    00263
    00264 #endif // _QX_STRING_CVT_IMPL_H_