ext-boost/boost/container/detail/function_detector.hpp
2014-12-28 01:22:08 -02:00

93 lines
3.4 KiB
C++

/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2009-2013.
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/container for documentation.
//
/////////////////////////////////////////////////////////////////////////////
// This code was modified from the code posted by Alexandre Courpron in his
// article "Interface Detection" in The Code Project:
// http://www.codeproject.com/KB/architecture/Detector.aspx
///////////////////////////////////////////////////////////////////////////////
// Copyright 2007 Alexandre Courpron
//
// Permission to use, copy, modify, redistribute and sell this software,
// provided that this copyright notice appears on all copies of the software.
///////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_CONTAINER_DETAIL_FUNCTION_DETECTOR_HPP
#define BOOST_CONTAINER_DETAIL_FUNCTION_DETECTOR_HPP
#if defined(_MSC_VER)
# pragma once
#endif
#include <boost/container/detail/config_begin.hpp>
namespace boost {
namespace container {
namespace function_detector {
typedef char NotFoundType;
struct StaticFunctionType { NotFoundType x [2]; };
struct NonStaticFunctionType { NotFoundType x [3]; };
enum
{ NotFound = 0,
StaticFunction = sizeof( StaticFunctionType ) - sizeof( NotFoundType ),
NonStaticFunction = sizeof( NonStaticFunctionType ) - sizeof( NotFoundType )
};
} //namespace boost {
} //namespace container {
} //namespace function_detector {
#define BOOST_CONTAINER_CREATE_FUNCTION_DETECTOR(Identifier, InstantiationKey) \
namespace boost { \
namespace container { \
namespace function_detector { \
template < class T, \
class NonStaticType, \
class NonStaticConstType, \
class StaticType > \
class DetectMember_##InstantiationKey_##Identifier { \
template < NonStaticType > \
struct TestNonStaticNonConst ; \
\
template < NonStaticConstType > \
struct TestNonStaticConst ; \
\
template < StaticType > \
struct TestStatic ; \
\
template <class U > \
static NonStaticFunctionType Test( TestNonStaticNonConst<&U::Identifier>*, int ); \
\
template <class U > \
static NonStaticFunctionType Test( TestNonStaticConst<&U::Identifier>*, int ); \
\
template <class U> \
static StaticFunctionType Test( TestStatic<&U::Identifier>*, int ); \
\
template <class U> \
static NotFoundType Test( ... ); \
public : \
static const int check = NotFound + (sizeof(Test<T>(0, 0)) - sizeof(NotFoundType));\
};\
}}} //namespace boost::container::function_detector {
#define BOOST_CONTAINER_DETECT_FUNCTION(Class, InstantiationKey, ReturnType, Identifier, Params) \
::boost::container::function_detector::DetectMember_##InstantiationKey_##Identifier< Class,\
ReturnType (Class::*)Params,\
ReturnType (Class::*)Params const,\
ReturnType (*)Params \
>::check
#include <boost/container/detail/config_end.hpp>
#endif //@ifndef BOOST_CONTAINER_DETAIL_FUNCTION_DETECTOR_HPP