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generic_container.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_GENERIC_CONTAINER_H_
    00033 #define _QX_GENERIC_CONTAINER_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00046 #include <boost/type_traits/is_pointer.hpp>
    00047
    00048 #include <boost/unordered_set.hpp>
    00049 #include <boost/unordered_map.hpp>
    00050
    00051 #include <QxTraits/is_smart_ptr.h>
    00052 #include <QxTraits/remove_attr.h>
    00053 #include <QxTraits/remove_smart_ptr.h>
    00054 #include <QxTraits/construct_ptr.h>
    00055
    00056 namespace qx {
    00057 namespace trait {
    00058
    00059 class no_type
    00060 { private: void dummy() const { ; } };
    00061
    00066 template <class T>
    00067 struct generic_container
    00068 { typedef no_type type_item; typedef no_type type_key; typedef no_type type_value; typedef no_type type_value_qx; typedef no_type type_iterator; };
    00069
    00070 template <typename Key, typename Value>
    00071 struct generic_container_item
    00072 {
    00073
    00074    typedef Key type_key;
    00075    typedef Value type_value;
    00076    typedef typename qx::trait::remove_attr<Value>::type type_value_qx_tmp;
    00077    typedef typename qx::trait::remove_smart_ptr<type_value_qx_tmp>::type type_value_qx;
    00078
    00079    enum { is_key_pointer = (boost::is_pointer<type_key>::value || qx::trait::is_smart_ptr<type_key>::value) };
    00080    enum { is_value_pointer = (boost::is_pointer<type_value>::value || qx::trait::is_smart_ptr<type_value>::value) };
    00081
    00082 private:
    00083
    00084    std::pair<type_key, type_value> m_pair;
    00085
    00086 public:
    00087
    00088    generic_container_item() { ; }
    00089    generic_container_item(const Key & key, const Value & value) { m_pair = std::make_pair(key, value); }
    00090    ~generic_container_item() { ; }
    00091
    00092    inline type_key & key()                         { return m_pair.first; }
    00093    inline type_value & value()                     { return m_pair.second; }
    00094    inline const type_key & key() const             { return m_pair.first; }
    00095    inline const type_value & value() const         { return m_pair.second; }
    00096    inline type_value_qx & value_qx()               { return value_qx_Helper<is_value_pointer, type_value, type_value_qx, 0>::get(m_pair.second); }
    00097    inline const type_value_qx & value_qx() const   { return value_qx_Helper<is_value_pointer, type_value, type_value_qx, 0>::get(m_pair.second); }
    00098
    00099    inline void key(const Key & key)                { m_pair.first = key; }
    00100    inline void value(const Value & value)          { m_pair.second = value; }
    00101
    00102    static inline type_key newKey()     { return new_Helper<is_key_pointer, type_key, 0>::get(); }
    00103    static inline type_value newValue() { return new_Helper<is_value_pointer, type_value, 0>::get(); }
    00104
    00105 private:
    00106
    00107    template <bool bIsPointer /* = true */, typename T, int dummy>
    00108    struct new_Helper
    00109    { static inline T get() { T t; qx::trait::construct_ptr<T>::get(t); return t; } };
    00110
    00111    template <typename T, int dummy>
    00112    struct new_Helper<false, T, dummy>
    00113    { static inline T get() { return T(); } };
    00114
    00115    template <bool bIsPointer /* = true */, typename T, typename U, int dummy>
    00116    struct value_qx_Helper
    00117    { static inline U & get(T & t) { return (* t); } };
    00118
    00119    template <typename T, typename U, int dummy>
    00120    struct value_qx_Helper<false, T, U, dummy>
    00121    { static inline U & get(T & t) { return t; } };
    00122
    00123 };
    00124
    00125 } // namespace trait
    00126 } // namespace qx
    00127
    00128 #define QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(TypeContainer, TypeKey, TypeValue) \
    00129 typedef qx::trait::generic_container_item< TypeKey, TypeValue > type_item; \
    00130 typedef typename type_item::type_key type_key; \
    00131 typedef typename type_item::type_value type_value; \
    00132 typedef typename type_item::type_value_qx type_value_qx; \
    00133 typedef typename TypeContainer::iterator type_iterator;
    00134
    00135 namespace qx {
    00136 namespace trait {
    00137 namespace detail {
    00138
    00139 template <typename Container, typename Item>
    00140 struct generic_container_base
    00141 {
    00142
    00143    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
    00144
    00145    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
    00146    static inline void clear(Container & t)                           { t.clear(); }
    00147    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
    00148    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
    00149    static inline Item * insertItem(Container & t, type_item & item)  { t.push_back(item.value()); return (& t.back()); }
    00150    static inline type_iterator end(Container & t)                    { return t.end(); }
    00151
    00152    static inline type_iterator begin(Container & t, type_item & item)
    00153    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
    00154
    00155    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
    00156    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
    00157
    00158 };
    00159
    00160 template <typename Container, typename Item>
    00161 struct generic_container_base_without_reserve
    00162 {
    00163
    00164    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
    00165
    00166    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
    00167    static inline void clear(Container & t)                           { t.clear(); }
    00168    static inline void reserve(Container & t, long l)                 { Q_UNUSED(t); Q_UNUSED(l); }
    00169    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
    00170    static inline Item * insertItem(Container & t, type_item & item)  { t.push_back(item.value()); return (& t.back()); }
    00171    static inline type_iterator end(Container & t)                    { return t.end(); }
    00172
    00173    static inline type_iterator begin(Container & t, type_item & item)
    00174    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
    00175
    00176    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
    00177    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
    00178
    00179 };
    00180
    00181 template <typename Container, typename Item>
    00182 struct generic_container_base_set
    00183 {
    00184
    00185    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
    00186
    00187    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
    00188    static inline void clear(Container & t)                           { t.clear(); }
    00189    static inline void reserve(Container & t, long l)                 { Q_UNUSED(t); Q_UNUSED(l); }
    00190    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
    00191    static inline Item * insertItem(Container & t, type_item & item)  { return const_cast<Item *>(& (* (t.insert(item.value()).first))); }
    00192    static inline type_iterator end(Container & t)                    { return t.end(); }
    00193
    00194    static inline type_iterator begin(Container & t, type_item & item)
    00195    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
    00196
    00197    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
    00198    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
    00199
    00200 };
    00201
    00202 template <typename Container, typename Item>
    00203 struct generic_container_base_multi_set
    00204 {
    00205
    00206    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
    00207
    00208    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
    00209    static inline void clear(Container & t)                           { t.clear(); }
    00210    static inline void reserve(Container & t, long l)                 { Q_UNUSED(t); Q_UNUSED(l); }
    00211    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
    00212    static inline Item * insertItem(Container & t, type_item & item)  { return const_cast<Item *>(& (* (t.insert(item.value())))); }
    00213    static inline type_iterator end(Container & t)                    { return t.end(); }
    00214
    00215    static inline type_iterator begin(Container & t, type_item & item)
    00216    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
    00217
    00218    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
    00219    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
    00220
    00221 };
    00222
    00223 template <typename Container, typename Key, typename Value>
    00224 struct generic_container_base_key_value_std_style
    00225 {
    00226
    00227    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, Key, Value)
    00228
    00229    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
    00230    static inline void clear(Container & t)                           { t.clear(); }
    00231    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
    00232    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
    00233    static inline Value * insertItem(Container & t, type_item & item) { return (& (t.insert(std::make_pair(item.key(), item.value())).first->second)); }
    00234    static inline type_iterator end(Container & t)                    { return t.end(); }
    00235
    00236    static inline type_iterator begin(Container & t, type_item & item)
    00237    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin().second); item.key(* t.begin().first); return t.begin(); }
    00238
    00239    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
    00240    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr.second); item.key(* itr.first); return itr; }
    00241
    00242 };
    00243
    00244 template <typename Container, typename Key, typename Value>
    00245 struct generic_container_base_key_value_multi_std_style
    00246 {
    00247
    00248    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, Key, Value)
    00249
    00250    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
    00251    static inline void clear(Container & t)                           { t.clear(); }
    00252    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
    00253    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
    00254    static inline Value * insertItem(Container & t, type_item & item) { return (& (t.insert(std::make_pair(item.key(), item.value()))->second)); }
    00255    static inline type_iterator end(Container & t)                    { return t.end(); }
    00256
    00257    static inline type_iterator begin(Container & t, type_item & item)
    00258    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin().second); item.key(* t.begin().first); return t.begin(); }
    00259
    00260    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
    00261    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr.second); item.key(* itr.first); return itr; }
    00262
    00263 };
    00264
    00265 template <typename Container, typename Key, typename Value>
    00266 struct generic_container_base_key_value_qt_style
    00267 {
    00268
    00269    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, Key, Value)
    00270
    00271    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
    00272    static inline void clear(Container & t)                           { t.clear(); }
    00273    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
    00274    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
    00275    static inline Value * insertItem(Container & t, type_item & item) { return (& (t.insert(item.key(), item.value()).value())); }
    00276    static inline type_iterator end(Container & t)                    { return t.end(); }
    00277
    00278    static inline type_iterator begin(Container & t, type_item & item)
    00279    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin().value()); item.key(* t.begin().key()); return t.begin(); }
    00280
    00281    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
    00282    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr.value()); item.key(* itr.key()); return itr; }
    00283
    00284 };
    00285
    00286 } // namespace detail
    00287
    00288 template <typename T>
    00289 struct generic_container< std::vector<T> > : public qx::trait::detail::generic_container_base< std::vector<T>, T >
    00290 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::vector, T), qx::trait::no_type, T) };
    00291
    00292 template <typename T>
    00293 struct generic_container< std::list<T> > : public qx::trait::detail::generic_container_base_without_reserve< std::list<T>, T >
    00294 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::list, T), qx::trait::no_type, T) };
    00295
    00296 template <typename T>
    00297 struct generic_container< std::set<T> > : public qx::trait::detail::generic_container_base_set< std::set<T>, T >
    00298 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::set, T), qx::trait::no_type, T) };
    00299
    00300 template <typename Key, typename Value>
    00301 struct generic_container< std::map<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_std_style< std::map<Key, Value>, Key, Value >
    00302 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(std::map, Key, Value), Key, Value) };
    00303
    00304 template <typename T>
    00305 struct generic_container< boost::unordered_set<T> > : public qx::trait::detail::generic_container_base_set< boost::unordered_set<T>, T >
    00306 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(boost::unordered_set, T), qx::trait::no_type, T) };
    00307
    00308 template <typename T>
    00309 struct generic_container< boost::unordered_multiset<T> > : public qx::trait::detail::generic_container_base_multi_set< boost::unordered_multiset<T>, T >
    00310 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(boost::unordered_multiset, T), qx::trait::no_type, T) };
    00311
    00312 template <typename Key, typename Value>
    00313 struct generic_container< boost::unordered_map<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_std_style< boost::unordered_map<Key, Value>, Key, Value >
    00314 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(boost::unordered_map, Key, Value), Key, Value) };
    00315
    00316 template <typename Key, typename Value>
    00317 struct generic_container< boost::unordered_multimap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_multi_std_style< boost::unordered_multimap<Key, Value>, Key, Value >
    00318 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(boost::unordered_multimap, Key, Value), Key, Value) };
    00319
    00320 #ifdef _QX_CPP_11_CONTAINER
    00321 #ifndef BOOST_NO_CXX11_STD_UNORDERED
    00322
    00323 template <typename T>
    00324 struct generic_container< std::unordered_set<T> > : public qx::trait::detail::generic_container_base_set< std::unordered_set<T>, T >
    00325 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::unordered_set, T), qx::trait::no_type, T) };
    00326
    00327 template <typename T>
    00328 struct generic_container< std::unordered_multiset<T> > : public qx::trait::detail::generic_container_base_multi_set< std::unordered_multiset<T>, T >
    00329 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::unordered_multiset, T), qx::trait::no_type, T) };
    00330
    00331 template <typename Key, typename Value>
    00332 struct generic_container< std::unordered_map<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_std_style< std::unordered_map<Key, Value>, Key, Value >
    00333 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(std::unordered_map, Key, Value), Key, Value) };
    00334
    00335 template <typename Key, typename Value>
    00336 struct generic_container< std::unordered_multimap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_multi_std_style< std::unordered_multimap<Key, Value>, Key, Value >
    00337 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(std::unordered_multimap, Key, Value), Key, Value) };
    00338
    00339 #endif // BOOST_NO_CXX11_STD_UNORDERED
    00340 #endif // _QX_CPP_11_CONTAINER
    00341
    00342 template <typename T>
    00343 struct generic_container< QVector<T> > : public qx::trait::detail::generic_container_base< QVector<T>, T >
    00344 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QVector, T), qx::trait::no_type, T) };
    00345
    00346 #if (QT_VERSION >= 0x040700)
    00347
    00348 template <typename T>
    00349 struct generic_container< QList<T> > : public qx::trait::detail::generic_container_base< QList<T>, T >
    00350 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QList, T), qx::trait::no_type, T) };
    00351
    00352 #else // (QT_VERSION >= 0x040700)
    00353
    00354 template <typename T>
    00355 struct generic_container< QList<T> > : public qx::trait::detail::generic_container_base_without_reserve< QList<T>, T >
    00356 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QList, T), qx::trait::no_type, T) };
    00357
    00358 #endif // (QT_VERSION >= 0x040700)
    00359
    00360 template <typename T>
    00361 struct generic_container< QLinkedList<T> > : public qx::trait::detail::generic_container_base_without_reserve< QLinkedList<T>, T >
    00362 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QLinkedList, T), qx::trait::no_type, T) };
    00363
    00364 template <typename T>
    00365 struct generic_container< QSet<T> > : public qx::trait::detail::generic_container_base_multi_set< QSet<T>, T >
    00366 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QSet, T), qx::trait::no_type, T) };
    00367
    00368 template <typename Key, typename Value>
    00369 struct generic_container< QMap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QMap<Key, Value>, Key, Value >
    00370 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QMap, Key, Value), Key, Value) };
    00371
    00372 template <typename Key, typename Value>
    00373 struct generic_container< QMultiMap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QMultiMap<Key, Value>, Key, Value >
    00374 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QMultiMap, Key, Value), Key, Value) };
    00375
    00376 template <typename Key, typename Value>
    00377 struct generic_container< QHash<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QHash<Key, Value>, Key, Value >
    00378 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QHash, Key, Value), Key, Value) };
    00379
    00380 template <typename Key, typename Value>
    00381 struct generic_container< QMultiHash<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QMultiHash<Key, Value>, Key, Value >
    00382 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QMultiHash, Key, Value), Key, Value) };
    00383
    00384 template <typename Key, typename Value>
    00385 struct generic_container< qx::QxCollection<Key, Value> >
    00386 {
    00387
    00388    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(qx::QxCollection, Key, Value), Key, Value)
    00389
    00390    static inline long size(const qx::QxCollection<Key, Value> & t)                        { return static_cast<long>(t.size()); }
    00391    static inline void clear(qx::QxCollection<Key, Value> & t)                             { t.clear(); }
    00392    static inline void reserve(qx::QxCollection<Key, Value> & t, long l)                   { t.reserve(l); }
    00393    static inline type_item createItem()                                                   { return type_item(type_item::newKey(), type_item::newValue()); }
    00394    static inline Value * insertItem(qx::QxCollection<Key, Value> & t, type_item & item)   { t.insert(item.key(), item.value()); return const_cast<Value *>(& t.getByKey(item.key())); }
    00395    static inline type_iterator end(qx::QxCollection<Key, Value> & t)                      { return t.end(); }
    00396
    00397    static inline type_iterator begin(qx::QxCollection<Key, Value> & t, type_item & item)
    00398    { if (t.size() <= 0) { return t.end(); }; item.value(t.getByIndex(0)); item.key(t.getKeyByIndex(0)); return t.begin(); }
    00399
    00400    static inline type_iterator next(qx::QxCollection<Key, Value> & t, type_iterator itr, type_item & item)
    00401    { itr++; if (itr == t.end()) { return t.end(); }; long l = (itr - t.begin()); item.value(t.getByIndex(l)); item.key(t.getKeyByIndex(l)); return itr; }
    00402
    00403 };
    00404
    00405 } // namespace trait
    00406 } // namespace qx
    00407
    00408 #endif // _QX_GENERIC_CONTAINER_H_