traits_test.cpp

C++的一个好库。。。现在很流行

// (C) 2003, Fernando Luis Cacciola Carballal.
//
// 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)
//
//
#include<iostream>
#include<iomanip>
#include<string>
#include<typeinfo>
#include<vector>
#include<algorithm>

#include <boost/cstdint.hpp>
#include <boost/utility.hpp>
#include <boost/preprocessor/cat.hpp>

#include <boost/numeric/conversion/conversion_traits.hpp>
#include <boost/numeric/conversion/int_float_mixture.hpp>
#include <boost/numeric/conversion/sign_mixture.hpp>
#include <boost/numeric/conversion/udt_builtin_mixture.hpp>
#include <boost/numeric/conversion/is_subranged.hpp>

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#include "test_helpers.cpp"
#include "test_helpers2.cpp"

using namespace std ;
using namespace boost ;
using namespace numeric;
using namespace MyUDT ;

// These helpers are used by generate_expected_traits<T,S>.
// Unlike the similar helpers in the implementation, they are specialized by extension.
//
template<class T, class S> struct my_is_subranged ;
template<class T, class S> struct my_is_trivial   ;
template<class T, class S> struct my_int_float_mixture ;
template<class T, class S> struct my_sign_mixture ;
template<class T, class S> struct my_udt_builtin_mixture ;

// This macro is used to define the properties of each conversion between
// the builtin arithmetric types
//
// It defines the specialization of the helper traits used by 'generate_expected_traits'
//
#define DEFINE_CONVERSION(Target,Source,Trivial,Mixture,SignMixture,UdtMixture,SubRanged) \
                                                          \
        template<> struct my_is_subranged<Target,Source>  \
          { typedef mpl::bool_< (SubRanged) > type ; } ; \
                                                         \
        template<> struct my_is_trivial<Target,Source>   \
          { typedef mpl::bool_< (Trivial) > type ; } ;  \
                                                                                                 \
        template<> struct my_int_float_mixture<Target,Source>                                    \
          { typedef mpl::integral_c<boost::numeric::int_float_mixture_enum, (Mixture) > type ; } ;    \
                                                                                                 \
        template<> struct my_sign_mixture<Target,Source>                                         \
          { typedef mpl::integral_c<boost::numeric::sign_mixture_enum, (SignMixture) > type ; } ;     \
                                                                                                 \
        template<> struct my_udt_builtin_mixture<Target,Source>                                  \
          { typedef mpl::integral_c<boost::numeric::udt_builtin_mixture_enum, (UdtMixture) > type ; }


#define cSubRanged true
#define cTrivial   true

// The following test assumes a specific relation between the sizes of the types being used;
// therefore, use specific fixed-width types instead built-in types directly.

// NOTE --> TARGET,SOURCE
//
DEFINE_CONVERSION(boost::uint8_t  , boost::uint8_t,  cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , boost::uint8_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , boost::uint8_t, !cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , boost::uint8_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , boost::uint8_t, !cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , boost::uint8_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(float           , boost::uint8_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(double          , boost::uint8_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(long double     , boost::uint8_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(MyInt           , boost::uint8_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , boost::uint8_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_udt    , !cSubRanged );

DEFINE_CONVERSION(boost::uint8_t  , boost::int8_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , boost::int8_t,  cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , boost::int8_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , boost::int8_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , boost::int8_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , boost::int8_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(float           , boost::int8_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(double          , boost::int8_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(long double     , boost::int8_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(MyInt           , boost::int8_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , boost::int8_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_udt    , !cSubRanged );

DEFINE_CONVERSION(boost::uint8_t  , boost::uint16_t, !cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , boost::uint16_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , boost::uint16_t,  cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , boost::uint16_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , boost::uint16_t, !cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , boost::uint16_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(float           , boost::uint16_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(double          , boost::uint16_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(long double     , boost::uint16_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(MyInt           , boost::uint16_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , boost::uint16_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_udt    , !cSubRanged );

DEFINE_CONVERSION(boost::uint8_t  , boost::int16_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , boost::int16_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , boost::int16_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , boost::int16_t,  cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , boost::int16_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , boost::int16_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(float           , boost::int16_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(double          , boost::int16_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(long double     , boost::int16_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(MyInt           , boost::int16_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , boost::int16_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_udt    , !cSubRanged );

DEFINE_CONVERSION(boost::uint8_t  , boost::uint32_t, !cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , boost::uint32_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , boost::uint32_t, !cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , boost::uint32_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , boost::uint32_t,  cTrivial, integral_to_integral, unsigned_to_unsigned, builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , boost::uint32_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(float           , boost::uint32_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(double          , boost::uint32_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(long double     , boost::uint32_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(MyInt           , boost::uint32_t, !cTrivial, integral_to_integral, unsigned_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , boost::uint32_t, !cTrivial, integral_to_float   , unsigned_to_signed  , builtin_to_udt    , !cSubRanged );

DEFINE_CONVERSION(boost::uint8_t  , boost::int32_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , boost::int32_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , boost::int32_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , boost::int32_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , boost::int32_t, !cTrivial, integral_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , boost::int32_t,  cTrivial, integral_to_integral, signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(float           , boost::int32_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(double          , boost::int32_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(long double     , boost::int32_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(MyInt           , boost::int32_t, !cTrivial, integral_to_integral, signed_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , boost::int32_t, !cTrivial, integral_to_float   , signed_to_signed  , builtin_to_udt    , !cSubRanged );

DEFINE_CONVERSION(boost::uint8_t  , float, !cTrivial, float_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , float, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , float, !cTrivial, float_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , float, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , float, !cTrivial, float_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , float, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(float           , float,  cTrivial, float_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(double          , float, !cTrivial, float_to_float   , signed_to_signed  , builtin_to_builtin, ( sizeof(float) > sizeof(double) ) );
DEFINE_CONVERSION(long double     , float, !cTrivial, float_to_float   , signed_to_signed  , builtin_to_builtin, ( sizeof(float) > sizeof(long double) ) );
DEFINE_CONVERSION(MyInt           , float, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , float, !cTrivial, float_to_float   , signed_to_signed  , builtin_to_udt    , !cSubRanged );

DEFINE_CONVERSION(boost::uint8_t  , double, !cTrivial, float_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int8_t   , double, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint16_t , double, !cTrivial, float_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int16_t  , double, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::uint32_t , double, !cTrivial, float_to_integral, signed_to_unsigned, builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(boost::int32_t  , double, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_builtin,  cSubRanged );
DEFINE_CONVERSION(float           , double, !cTrivial, float_to_float   , signed_to_signed  , builtin_to_builtin, ( sizeof(double) > sizeof(float) ) );
DEFINE_CONVERSION(double          , double,  cTrivial, float_to_float   , signed_to_signed  , builtin_to_builtin, !cSubRanged );
DEFINE_CONVERSION(long double     , double, !cTrivial, float_to_float   , signed_to_signed  , builtin_to_builtin, ( sizeof(double) > sizeof(long double) ) );
DEFINE_CONVERSION(MyInt           , double, !cTrivial, float_to_integral, signed_to_signed  , builtin_to_udt    , !cSubRanged );
DEFINE_CONVERSION(MyFloat         , double, !cTrivial, float_to_float   , signed_to_signed  , builtin_to_udt    , !cSubRanged );