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IxFunction.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 _IX_FUNCTION_H_
    00027 #define _IX_FUNCTION_H_
    00028
    00029 #ifdef _MSC_VER
    00030 #pragma once
    00031 #endif
    00032
    00040 #include <boost/any.hpp>
    00041 #include <boost/function.hpp>
    00042 #include <boost/lexical_cast.hpp>
    00043 #include <boost/static_assert.hpp>
    00044 #include <boost/type_traits/is_same.hpp>
    00045
    00046 #include <QxCommon/QxBool.h>
    00047
    00048 #include <QxCollection/QxCollection.h>
    00049
    00050 #include <QxFunction/QxFunctionError.h>
    00051 #include <QxFunction/QxFunctionMacro.h>
    00052
    00053 #include <QxTraits/remove_attr.h>
    00054
    00055 namespace qx {
    00056
    00061 class IxFunction
    00062 {
    00063
    00064 protected:
    00065
    00066    QString m_sSeparator;
    00067
    00068 public:
    00069
    00070    typedef std::vector<boost::any> type_any_params;
    00071
    00072    IxFunction() : m_sSeparator("|") { ; }
    00073    virtual ~IxFunction() { ; }
    00074
    00075    QString getSeparator() const           { return m_sSeparator; }
    00076    void setSeparator(const QString & s)   { m_sSeparator = s; }
    00077
    00078    virtual qx_bool invoke(const QString & params = QString(), boost::any * ret = NULL) const = 0;
    00079    virtual qx_bool invoke(const type_any_params & params, boost::any * ret = NULL) const = 0;
    00080    virtual qx_bool invoke(void * pOwner, const QString & params = QString(), boost::any * ret = NULL) const = 0;
    00081    virtual qx_bool invoke(void * pOwner, const type_any_params & params, boost::any * ret = NULL) const = 0;
    00082
    00083    virtual qx_bool isValidFct() const = 0;
    00084    virtual qx_bool isValidParams(const QString & params) const = 0;
    00085    virtual qx_bool isValidParams(const type_any_params & params) const = 0;
    00086
    00087    template <class T>
    00088    qx_bool isValidOwner(void * pOwner, T * dummy) const
    00089    {
    00090       Q_UNUSED(dummy);
    00091       typedef boost::is_same<T, void> qx_verify_owner_tmp;
    00092       BOOST_STATIC_ASSERT(! qx_verify_owner_tmp::value);
    00093       if (! pOwner) { return qx_bool(false, 0, QX_FUNCTION_ERR_NULL_OWNER); }
    00094       if (! dynamic_cast<T *>(static_cast<T *>(pOwner))) { return qx_bool(false, 0, QX_FUNCTION_ERR_INVALID_OWNER); }
    00095       return true;
    00096    }
    00097
    00098    template <class T>
    00099    qx_bool isValid(const T & params) const
    00100    {
    00101       qx_bool bValid = isValidFct(); if (! bValid) { return bValid; };
    00102       bValid = isValidParams(params); if (! bValid) { return bValid; };
    00103       return true;
    00104    }
    00105
    00106    template <class T, class U>
    00107    qx_bool isValid(void * pOwner, const T & params, U * dummy) const
    00108    {
    00109       Q_UNUSED(dummy);
    00110       qx_bool bValid = isValidFct(); if (! bValid) { return bValid; };
    00111       bValid = isValidParams(params); if (! bValid) { return bValid; };
    00112       bValid = isValidOwner<U>(pOwner, NULL); if (! bValid) { return bValid; };
    00113       return true;
    00114    }
    00115
    00116 };
    00117
    00118 typedef boost::shared_ptr<IxFunction> IxFunction_ptr;
    00119 typedef QxCollection<QString, IxFunction_ptr> IxFunctionX;
    00120 typedef boost::shared_ptr<IxFunctionX> IxFunctionX_ptr;
    00121
    00122 } // namespace qx
    00123
    00124 #endif // _IX_FUNCTION_H_

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