// Copyright Aleksey Gurtovoy 2000-2006 | |
// | |
// 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/mpl for documentation. | |
// $Id: integral_wrapper.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ | |
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ | |
// $Revision: 49267 $ | |
// NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION! | |
#include <boost/mpl/integral_c_tag.hpp> | |
#include <boost/mpl/aux_/static_cast.hpp> | |
#include <boost/mpl/aux_/nttp_decl.hpp> | |
#include <boost/mpl/aux_/config/static_constant.hpp> | |
#include <boost/mpl/aux_/config/workaround.hpp> | |
#include <boost/preprocessor/cat.hpp> | |
#if !defined(AUX_WRAPPER_NAME) | |
# define AUX_WRAPPER_NAME BOOST_PP_CAT(AUX_WRAPPER_VALUE_TYPE,_) | |
#endif | |
#if !defined(AUX_WRAPPER_PARAMS) | |
# define AUX_WRAPPER_PARAMS(N) BOOST_MPL_AUX_NTTP_DECL(AUX_WRAPPER_VALUE_TYPE, N) | |
#endif | |
#if !defined(AUX_WRAPPER_INST) | |
# if BOOST_WORKAROUND(__MWERKS__, <= 0x2407) | |
# define AUX_WRAPPER_INST(value) AUX_WRAPPER_NAME< value > | |
# else | |
# define AUX_WRAPPER_INST(value) BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::AUX_WRAPPER_NAME< value > | |
# endif | |
#endif | |
BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN | |
template< AUX_WRAPPER_PARAMS(N) > | |
struct AUX_WRAPPER_NAME | |
{ | |
BOOST_STATIC_CONSTANT(AUX_WRAPPER_VALUE_TYPE, value = N); | |
// agurt, 08/mar/03: SGI MIPSpro C++ workaround, have to #ifdef because some | |
// other compilers (e.g. MSVC) are not particulary happy about it | |
#if BOOST_WORKAROUND(__EDG_VERSION__, <= 238) | |
typedef struct AUX_WRAPPER_NAME type; | |
#else | |
typedef AUX_WRAPPER_NAME type; | |
#endif | |
typedef AUX_WRAPPER_VALUE_TYPE value_type; | |
typedef integral_c_tag tag; | |
// have to #ifdef here: some compilers don't like the 'N + 1' form (MSVC), | |
// while some other don't like 'value + 1' (Borland), and some don't like | |
// either | |
#if BOOST_WORKAROUND(__EDG_VERSION__, <= 243) | |
private: | |
BOOST_STATIC_CONSTANT(AUX_WRAPPER_VALUE_TYPE, next_value = BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N + 1))); | |
BOOST_STATIC_CONSTANT(AUX_WRAPPER_VALUE_TYPE, prior_value = BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N - 1))); | |
public: | |
typedef AUX_WRAPPER_INST(next_value) next; | |
typedef AUX_WRAPPER_INST(prior_value) prior; | |
#elif BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x561)) \ | |
|| BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(502)) \ | |
|| (BOOST_WORKAROUND(__HP_aCC, <= 53800) && (BOOST_WORKAROUND(__hpxstd98, != 1))) | |
typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N + 1)) ) next; | |
typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (N - 1)) ) prior; | |
#else | |
typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (value + 1)) ) next; | |
typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (value - 1)) ) prior; | |
#endif | |
// enables uniform function call syntax for families of overloaded | |
// functions that return objects of both arithmetic ('int', 'long', | |
// 'double', etc.) and wrapped integral types (for an example, see | |
// "mpl/example/power.cpp") | |
operator AUX_WRAPPER_VALUE_TYPE() const { return static_cast<AUX_WRAPPER_VALUE_TYPE>(this->value); } | |
}; | |
#if !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION) | |
template< AUX_WRAPPER_PARAMS(N) > | |
AUX_WRAPPER_VALUE_TYPE const AUX_WRAPPER_INST(N)::value; | |
#endif | |
BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE | |
#undef AUX_WRAPPER_NAME | |
#undef AUX_WRAPPER_PARAMS | |
#undef AUX_WRAPPER_INST | |
#undef AUX_WRAPPER_VALUE_TYPE |