QxOrm  1.4.5
C++ Object Relational Mapping library
QxFunction_2.h
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00001 /****************************************************************************
00002 **
00003 ** https://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
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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
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00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the
00022 ** packaging of this file. Please review the following information to
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00024 ** met : http://www.gnu.org/copyleft/gpl.html
00025 **
00026 ** If you are unsure which license is appropriate for your use, or
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00031 
00032 #ifndef _QX_FUNCTION_2_H_
00033 #define _QX_FUNCTION_2_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <QxFunction/IxFunction.h>
00047 #include <QxFunction/QxParameters.h>
00048 
00049 namespace qx {
00050 
00055 template <class Owner, typename R, typename P1, typename P2>
00056 class QxFunction_2 : public IxFunction
00057 {
00058 
00059 public:
00060 
00061    typedef std::function<R (Owner *, P1, P2)> type_fct;
00062    typedef typename qx::trait::remove_attr<P1, false>::type type_P1;
00063    typedef typename qx::trait::remove_attr<P2, false>::type type_P2;
00064    QX_FUNCTION_CLASS_MEMBER_FCT(QxFunction_2);
00065 
00066    virtual int getParamCount() const                                    { return 2; }
00067    virtual qx_bool isValidParams(const QString & params) const          { Q_UNUSED(params); return true; }
00068    virtual qx_bool isValidParams(const type_any_params & params) const  { Q_UNUSED(params); return true; }
00069 
00070 private:
00071 
00072    template <class T, bool bReturnValue /* = false */>
00073    struct QxInvokerFct
00074    {
00075       static inline qx_bool invoke(void * pOwner, const T & params, qx::any * ret, const QxFunction_2 * pThis)
00076       {
00077          QX_FUNCTION_INVOKE_START_WITH_OWNER();
00078          QX_FUNCTION_FETCH_PARAM(type_P1, p1, get_param_1);
00079          QX_FUNCTION_FETCH_PARAM(type_P2, p2, get_param_2);
00080          try { pThis->m_fct(static_cast<Owner *>(pOwner), p1, p2); }
00081          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00082       }
00083    };
00084 
00085    template <class T>
00086    struct QxInvokerFct<T, true>
00087    {
00088       static inline qx_bool invoke(void * pOwner, const T & params, qx::any * ret, const QxFunction_2 * pThis)
00089       {
00090          QX_FUNCTION_INVOKE_START_WITH_OWNER();
00091          QX_FUNCTION_FETCH_PARAM(type_P1, p1, get_param_1);
00092          QX_FUNCTION_FETCH_PARAM(type_P2, p2, get_param_2);
00093          try { R retTmp = pThis->m_fct(static_cast<Owner *>(pOwner), p1, p2); if (ret) { (* ret) = qx::any(retTmp); } }
00094          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00095       }
00096    };
00097 
00098 };
00099 
00100 template <typename R, typename P1, typename P2>
00101 class QxFunction_2<void, R, P1, P2> : public IxFunction
00102 {
00103 
00104 public:
00105 
00106    typedef std::function<R (P1, P2)> type_fct;
00107    typedef typename qx::trait::remove_attr<P1, false>::type type_P1;
00108    typedef typename qx::trait::remove_attr<P2, false>::type type_P2;
00109    QX_FUNCTION_CLASS_FCT(QxFunction_2);
00110 
00111    virtual int getParamCount() const                                    { return 2; }
00112    virtual qx_bool isValidParams(const QString & params) const          { Q_UNUSED(params); return true; }
00113    virtual qx_bool isValidParams(const type_any_params & params) const  { Q_UNUSED(params); return true; }
00114 
00115 private:
00116 
00117    template <class T, bool bReturnValue /* = false */>
00118    struct QxInvokerFct
00119    {
00120       static inline qx_bool invoke(const T & params, qx::any * ret, const QxFunction_2 * pThis)
00121       {
00122          QX_FUNCTION_INVOKE_START_WITHOUT_OWNER();
00123          QX_FUNCTION_FETCH_PARAM(type_P1, p1, get_param_1);
00124          QX_FUNCTION_FETCH_PARAM(type_P2, p2, get_param_2);
00125          try { pThis->m_fct(p1, p2); }
00126          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00127       }
00128    };
00129 
00130    template <class T>
00131    struct QxInvokerFct<T, true>
00132    {
00133       static inline qx_bool invoke(const T & params, qx::any * ret, const QxFunction_2 * pThis)
00134       {
00135          QX_FUNCTION_INVOKE_START_WITHOUT_OWNER();
00136          QX_FUNCTION_FETCH_PARAM(type_P1, p1, get_param_1);
00137          QX_FUNCTION_FETCH_PARAM(type_P2, p2, get_param_2);
00138          try { R retTmp = pThis->m_fct(p1, p2); if (ret) { (* ret) = qx::any(retTmp); } }
00139          QX_FUNCTION_CATCH_AND_RETURN_INVOKE();
00140       }
00141    };
00142 
00143 };
00144 
00145 namespace function {
00146 
00147 template <class Owner, typename R, typename P1, typename P2>
00148 IxFunction_ptr bind_fct_2(const typename QxFunction_2<Owner, R, P1, P2>::type_fct & fct)
00149 {
00150    typedef std::is_same<Owner, void> qx_verify_owner_tmp;
00151    static_assert(qx_verify_owner_tmp::value, "qx_verify_owner_tmp::value");
00152    IxFunction_ptr ptr; ptr.reset(new QxFunction_2<void, R, P1, P2>(fct));
00153    return ptr;
00154 }
00155 
00156 template <class Owner, typename R, typename P1, typename P2>
00157 IxFunction_ptr bind_member_fct_2(const typename QxFunction_2<Owner, R, P1, P2>::type_fct & fct)
00158 {
00159    typedef std::is_same<Owner, void> qx_verify_owner_tmp;
00160    static_assert(! qx_verify_owner_tmp::value, "! qx_verify_owner_tmp::value");
00161    IxFunction_ptr ptr; ptr.reset(new QxFunction_2<Owner, R, P1, P2>(fct));
00162    return ptr;
00163 }
00164 
00165 } // namespace function
00166 } // namespace qx
00167 
00168 #endif // _QX_FUNCTION_2_H_