QxOrm 1.1.9
C++ Object Relational Mapping library
QxFunction_0.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_FUNCTION_0_H_
00027 #define _QX_FUNCTION_0_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <QxFunction/IxFunction.h>
00041 #include <QxFunction/QxParameters.h>
00042 
00043 namespace qx {
00044 
00049 template <class Owner, typename R>
00050 class QxFunction_0 : public IxFunction
00051 {
00052 
00053 public:
00054 
00055    typedef boost::function<R (Owner *)> type_fct;
00056    QX_FUNCTION_CLASS_MEMBER_FCT(QxFunction_0);
00057 
00058    virtual qx_bool isValidParams(const QString & params) const          { Q_UNUSED(params); return true; }
00059    virtual qx_bool isValidParams(const type_any_params & params) const  { Q_UNUSED(params); return true; }
00060 
00061 private:
00062 
00063    template <class T, bool bReturnValue /* = false */>
00064    struct QxInvokerFct
00065    {
00066       static inline qx_bool invoke(void * pOwner, const T & params, boost::any * ret, const QxFunction_0 * pThis)
00067       {
00068          QX_FUNCTION_INVOKE_START_WITH_OWNER();
00069          try { pThis->m_fct(static_cast<Owner *>(pOwner)); }
00070          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00071       }
00072    };
00073 
00074    template <class T>
00075    struct QxInvokerFct<T, true>
00076    {
00077       static inline qx_bool invoke(void * pOwner, const T & params, boost::any * ret, const QxFunction_0 * pThis)
00078       {
00079          QX_FUNCTION_INVOKE_START_WITH_OWNER();
00080          try { R retTmp = pThis->m_fct(static_cast<Owner *>(pOwner)); if (ret) { (* ret) = boost::any(retTmp); } }
00081          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00082       }
00083    };
00084 
00085 };
00086 
00087 template <typename R>
00088 class QxFunction_0<void, R> : public IxFunction
00089 {
00090 
00091 public:
00092 
00093    typedef boost::function<R ()> type_fct;
00094    QX_FUNCTION_CLASS_FCT(QxFunction_0);
00095 
00096    virtual qx_bool isValidParams(const QString & params) const          { Q_UNUSED(params); return true; }
00097    virtual qx_bool isValidParams(const type_any_params & params) const  { Q_UNUSED(params); return true; }
00098 
00099 private:
00100 
00101    template <class T, bool bReturnValue /* = false */>
00102    struct QxInvokerFct
00103    {
00104       static inline qx_bool invoke(const T & params, boost::any * ret, const QxFunction_0 * pThis)
00105       {
00106          QX_FUNCTION_INVOKE_START_WITHOUT_OWNER();
00107          try { pThis->m_fct(); }
00108          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00109       }
00110    };
00111 
00112    template <class T>
00113    struct QxInvokerFct<T, true>
00114    {
00115       static inline qx_bool invoke(const T & params, boost::any * ret, const QxFunction_0 * pThis)
00116       {
00117          QX_FUNCTION_INVOKE_START_WITHOUT_OWNER();
00118          try { R retTmp = pThis->m_fct(); if (ret) { (* ret) = boost::any(retTmp); } }
00119          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00120       }
00121    };
00122 
00123 };
00124 
00125 namespace function {
00126 
00127 template <class Owner, typename R>
00128 IxFunction_ptr bind_fct_0(const typename QxFunction_0<Owner, R>::type_fct & fct)
00129 {
00130    typedef boost::is_same<Owner, void> qx_verify_owner_tmp;
00131    BOOST_STATIC_ASSERT(qx_verify_owner_tmp::value);
00132    IxFunction_ptr ptr; ptr.reset(new QxFunction_0<void, R>(fct));
00133    return ptr;
00134 }
00135 
00136 template <class Owner, typename R>
00137 IxFunction_ptr bind_member_fct_0(const typename QxFunction_0<Owner, R>::type_fct & fct)
00138 {
00139    typedef boost::is_same<Owner, void> qx_verify_owner_tmp;
00140    BOOST_STATIC_ASSERT(! qx_verify_owner_tmp::value);
00141    IxFunction_ptr ptr; ptr.reset(new QxFunction_0<Owner, R>(fct));
00142    return ptr;
00143 }
00144 
00145 } // namespace function
00146 } // namespace qx
00147 
00148 #endif // _QX_FUNCTION_0_H_
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