[ceph.git] / ceph / src / boost / boost / tti / has_static_member_data.hpp


//  (C) Copyright Edward Diener 2011,2012,2013
//  Use, modification and distribution are subject to 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).

#if !defined(BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP)
#define BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP

#include <boost/config.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/tti/gen/has_static_member_data_gen.hpp>
#include <boost/tti/detail/dstatic_mem_data.hpp>

/*

  The succeeding comments in this file are in doxygen format.

*/

/** \file
*/

/// A macro which expands to a metafunction which tests whether a static member data with a particular name and type exists.
/**

    BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA is a macro which expands to a metafunction.
    The metafunction tests whether static member data with a particular
    name and type exists. The macro takes the form of BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) where
    
    trait = the name of the metafunction <br/>
    name  = the name of the inner member.

    BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA generates a metafunction called "trait" where 'trait' is the macro parameter.
    
  @code
  
              template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE>
              struct trait
                {
                static const value = unspecified;
                typedef mpl::bool_<true-or-false> type;
                };

              The metafunction types and return:
    
                BOOST_TTI_TP_T    = the enclosing type.
                                    The enclosing type can be a class, struct, or union.
                                    If the type is a union, static member data can only
                                    be found if the C++11 unrestricted union is implemented
                                    by the compiler being used, since prior to C++11 a union
                                    could not have static data members.
                
                BOOST_TTI_TP_TYPE = the type of the static member data.
                       
                returns = 'value' is true if the 'name' exists,
                          with the BOOST_TTI_TP_TYPE type,
                          within the enclosing BOOST_TTI_TP_T type,
                          otherwise 'value' is false.
                          
  @endcode
  
*/
#define BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) \
  BOOST_TTI_DETAIL_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) \
  template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE> \
  struct trait \
    { \
    typedef typename \
    BOOST_PP_CAT(trait,_detail_hsd)<BOOST_TTI_TP_T,BOOST_TTI_TP_TYPE>::type type; \
    BOOST_STATIC_CONSTANT(bool,value=type::value); \
    }; \
/**/

/// A macro which expands to a metafunction which tests whether a static member data with a particular name and type exists.
/**

    BOOST_TTI_HAS_STATIC_MEMBER_DATA is a macro which expands to a metafunction.
    The metafunction tests whether static member data with a particular
    name and type exists. The macro takes the form of BOOST_TTI_HAS_STATIC_MEMBER_DATA(name) where
    
    name  = the name of the inner member.

    BOOST_TTI_HAS_STATIC_MEMBER_DATA generates a metafunction called "has_static_member_data_name" where 'name' is the macro parameter.
    
  @code
  
              template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE>
              struct has_static_member_data_'name'
                {
                static const value = unspecified;
                typedef mpl::bool_<true-or-false> type;
                };

              The metafunction types and return:
    
                BOOST_TTI_TP_T    = the enclosing type.
                                    The enclosing type can be a class, struct, or union.
                                    If the type is a union, static member data can only
                                    be found if the C++11 unrestricted union is implemented
                                    by the compiler being used, since prior to C++11 a union
                                    could not have static data members.
                
                BOOST_TTI_TP_TYPE = the type of the static member data.
                       
                returns = 'value' is true if the 'name' exists,
                          with the appropriate BOOST_TTI_TP_TYPE type,
                          within the enclosing BOOST_TTI_TP_T type,
                          otherwise 'value' is false.
                          
  @endcode
  
*/
#define BOOST_TTI_HAS_STATIC_MEMBER_DATA(name) \
  BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA \
  ( \
  BOOST_TTI_HAS_STATIC_MEMBER_DATA_GEN(name), \
  name \
  ) \
/**/

#endif // BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP
Commit	Line	Data
7c673cae FG	1
	2	// (C) Copyright Edward Diener 2011,2012,2013
	3	// Use, modification and distribution are subject to the Boost Software License,
	4	// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
	5	// http://www.boost.org/LICENSE_1_0.txt).
	6
	7	#if !defined(BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP)
	8	#define BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP
	9
	10	#include <boost/config.hpp>
	11	#include <boost/preprocessor/cat.hpp>
	12	#include <boost/tti/gen/has_static_member_data_gen.hpp>
	13	#include <boost/tti/detail/dstatic_mem_data.hpp>
	14
	15	/*
	16
	17	The succeeding comments in this file are in doxygen format.
	18
	19	*/
	20
	21	/** \file
	22	*/
	23
f67539c2	24	/// A macro which expands to a metafunction which tests whether a static member data with a particular name and type exists.
7c673cae FG	25	/**
7c673cae FG	26
f67539c2 TL	27	BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA is a macro which expands to a metafunction.
	28	The metafunction tests whether static member data with a particular
	29	name and type exists. The macro takes the form of BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) where
7c673cae	30
f67539c2	31	trait = the name of the metafunction <br/>
7c673cae FG	32	name = the name of the inner member.
7c673cae FG	33
f67539c2	34	BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA generates a metafunction called "trait" where 'trait' is the macro parameter.
7c673cae	35
f67539c2 TL	36	@code
	37
	38	template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE>
	39	struct trait
	40	{
	41	static const value = unspecified;
	42	typedef mpl::bool_<true-or-false> type;
	43	};
	44
7c673cae FG	45	The metafunction types and return:
	46
	47	BOOST_TTI_TP_T = the enclosing type.
f67539c2 TL	48	The enclosing type can be a class, struct, or union.
	49	If the type is a union, static member data can only
	50	be found if the C++11 unrestricted union is implemented
	51	by the compiler being used, since prior to C++11 a union
	52	could not have static data members.
7c673cae	53
f67539c2	54	BOOST_TTI_TP_TYPE = the type of the static member data.
7c673cae FG	55
	56	returns = 'value' is true if the 'name' exists,
	57	with the BOOST_TTI_TP_TYPE type,
	58	within the enclosing BOOST_TTI_TP_T type,
	59	otherwise 'value' is false.
	60
f67539c2 TL	61	@endcode
f67539c2 TL	62
7c673cae FG	63	*/
	64	#define BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) \
	65	BOOST_TTI_DETAIL_TRAIT_HAS_STATIC_MEMBER_DATA(trait,name) \
	66	template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE> \
	67	struct trait \
	68	{ \
	69	typedef typename \
	70	BOOST_PP_CAT(trait,_detail_hsd)<BOOST_TTI_TP_T,BOOST_TTI_TP_TYPE>::type type; \
	71	BOOST_STATIC_CONSTANT(bool,value=type::value); \
	72	}; \
	73	/**/
	74
f67539c2	75	/// A macro which expands to a metafunction which tests whether a static member data with a particular name and type exists.
7c673cae FG	76	/**
7c673cae FG	77
f67539c2 TL	78	BOOST_TTI_HAS_STATIC_MEMBER_DATA is a macro which expands to a metafunction.
	79	The metafunction tests whether static member data with a particular
	80	name and type exists. The macro takes the form of BOOST_TTI_HAS_STATIC_MEMBER_DATA(name) where
	81
7c673cae FG	82	name = the name of the inner member.
7c673cae FG	83
f67539c2	84	BOOST_TTI_HAS_STATIC_MEMBER_DATA generates a metafunction called "has_static_member_data_name" where 'name' is the macro parameter.
7c673cae	85
f67539c2 TL	86	@code
	87
	88	template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_TYPE>
	89	struct has_static_member_data_'name'
	90	{
	91	static const value = unspecified;
	92	typedef mpl::bool_<true-or-false> type;
	93	};
	94
7c673cae FG	95	The metafunction types and return:
	96
	97	BOOST_TTI_TP_T = the enclosing type.
f67539c2 TL	98	The enclosing type can be a class, struct, or union.
	99	If the type is a union, static member data can only
	100	be found if the C++11 unrestricted union is implemented
	101	by the compiler being used, since prior to C++11 a union
	102	could not have static data members.
7c673cae	103
f67539c2	104	BOOST_TTI_TP_TYPE = the type of the static member data.
7c673cae FG	105
	106	returns = 'value' is true if the 'name' exists,
	107	with the appropriate BOOST_TTI_TP_TYPE type,
	108	within the enclosing BOOST_TTI_TP_T type,
	109	otherwise 'value' is false.
	110
f67539c2 TL	111	@endcode
f67539c2 TL	112
7c673cae FG	113	*/
	114	#define BOOST_TTI_HAS_STATIC_MEMBER_DATA(name) \
	115	BOOST_TTI_TRAIT_HAS_STATIC_MEMBER_DATA \
	116	( \
	117	BOOST_TTI_HAS_STATIC_MEMBER_DATA_GEN(name), \
	118	name \
	119	) \
	120	/**/
	121
	122	#endif // BOOST_TTI_HAS_STATIC_MEMBER_DATA_HPP