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has_xxx checkin
[SVN r16307]
This commit is contained in:
@@ -32,22 +32,22 @@
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// the implementation below is based on a USENET newsgroup's posting by
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// the implementation below is based on a USENET newsgroup's posting by
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// Rani Sharoni (comp.lang.c++.moderated, 2002-03-17 07:45:09 PST)
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// Rani Sharoni (comp.lang.c++.moderated, 2002-03-17 07:45:09 PST)
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# define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \
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# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
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template< typename T > \
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template< typename T > \
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boost::mpl::aux::yes_tag \
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boost::mpl::aux::yes_tag \
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has_##name##_helper( \
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trait##_helper( \
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T const volatile* \
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T const volatile* \
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, boost::mpl::aux::type_wrapper<BOOST_MSVC_TYPENAME T::name>* = 0 \
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, boost::mpl::aux::type_wrapper<BOOST_MSVC_TYPENAME T::name>* = 0 \
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); \
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); \
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\
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\
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boost::mpl::aux::no_tag \
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boost::mpl::aux::no_tag \
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has_##name##_helper(...); \
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trait##_helper(...); \
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\
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\
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template< typename T > \
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template< typename T > \
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struct has_##name \
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struct trait \
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{ \
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{ \
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BOOST_STATIC_CONSTANT(bool, value = \
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BOOST_STATIC_CONSTANT(bool, value = \
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sizeof((has_##name##_helper)(static_cast<T*>(0))) \
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sizeof((trait##_helper)(static_cast<T*>(0))) \
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== sizeof(boost::mpl::aux::yes_tag) \
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== sizeof(boost::mpl::aux::yes_tag) \
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); \
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); \
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}; \
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}; \
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@@ -66,9 +66,9 @@ namespace boost { namespace mpl { namespace aux {
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struct has_xxx_tag;
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struct has_xxx_tag;
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}}}
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}}}
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# define BOOST_MPL_HAS_XXX_TRAIT_DEF_(name) \
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# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name) \
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template< typename T, typename name = ::boost::mpl::aux::has_xxx_tag > \
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template< typename T, typename name = ::boost::mpl::aux::has_xxx_tag > \
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struct has_##name : T \
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struct trait : T \
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{ \
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{ \
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private: \
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private: \
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static boost::mpl::aux::no_tag test(void(*)(::boost::mpl::aux::has_xxx_tag)); \
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static boost::mpl::aux::no_tag test(void(*)(::boost::mpl::aux::has_xxx_tag)); \
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@@ -81,37 +81,37 @@ struct has_##name : T \
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); \
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); \
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}; \
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}; \
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\
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\
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, void) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, void) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, bool) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, bool) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, char) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, char) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, signed char) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, signed char) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, unsigned char) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, unsigned char) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, signed short) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, signed short) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, unsigned short) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, unsigned short) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, signed int) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, signed int) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, unsigned int) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, unsigned int) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, signed long) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, signed long) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, unsigned long) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, unsigned long) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, float) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, float) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, double) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, double) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, long double) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, long double) \
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/**/
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/**/
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# define BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, T) \
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# define BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, T) \
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template<> struct has_##name<T,boost::mpl::aux::has_xxx_tag> \
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template<> struct trait<T,boost::mpl::aux::has_xxx_tag> \
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{ \
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{ \
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enum { value = false }; \
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enum { value = false }; \
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}; \
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}; \
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/**/
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/**/
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#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
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#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
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# define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \
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# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
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BOOST_MPL_HAS_XXX_TRAIT_DEF_(name) \
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BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, wchar_t) \
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BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(trait, wchar_t) \
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/**/
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/**/
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#else
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#else
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# define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \
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# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
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BOOST_MPL_HAS_XXX_TRAIT_DEF_(name) \
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BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF_(trait, name) \
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/**/
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/**/
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#endif
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#endif
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@@ -119,9 +119,9 @@ template<> struct has_##name<T,boost::mpl::aux::has_xxx_tag> \
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#else
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#else
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# define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \
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# define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name) \
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template< typename T > \
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template< typename T > \
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struct has_##name \
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struct trait \
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{ \
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{ \
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BOOST_STATIC_CONSTANT(bool, value = false); \
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BOOST_STATIC_CONSTANT(bool, value = false); \
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}; \
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}; \
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@@ -129,4 +129,8 @@ struct has_##name \
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#endif // BOOST_MPL_BROKEN_OVERLOAD_RESOLUTION
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#endif // BOOST_MPL_BROKEN_OVERLOAD_RESOLUTION
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#define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \
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BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(has_##name, name) \
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/**/
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#endif // BOOST_MPL_AUX_HAS_XXX_HPP_INCLUDED
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#endif // BOOST_MPL_AUX_HAS_XXX_HPP_INCLUDED
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