1 2 #if !defined(BOOST_PP_IS_ITERATING) 3 4 ///// header body 5 6 #ifndef BOOST_MPL_QUOTE_HPP_INCLUDED 7 #define BOOST_MPL_QUOTE_HPP_INCLUDED 8 9 // Copyright Aleksey Gurtovoy 2000-2008 10 // 11 // Distributed under the Boost Software License, Version 1.0. 12 // (See accompanying file LICENSE_1_0.txt or copy at 13 // http://www.boost.org/LICENSE_1_0.txt) 14 // 15 // See http://www.boost.org/libs/mpl for documentation. 16 17 // $Id: quote.hpp 49272 2008-10-11 06:50:46Z agurtovoy $ 18 // $Date: 2008-10-10 23:50:46 -0700 (Fri, 10 Oct 2008) $ 19 // $Revision: 49272 $ 20 21 #if !defined(BOOST_MPL_PREPROCESSING_MODE) 22 # include <boost/mpl/void.hpp> 23 # include <boost/mpl/aux_/has_type.hpp> 24 #endif 25 26 #include <boost/mpl/aux_/config/bcc.hpp> 27 #include <boost/mpl/aux_/config/ttp.hpp> 28 29 #if defined(BOOST_MPL_CFG_NO_TEMPLATE_TEMPLATE_PARAMETERS) \ 30 && !defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS) 31 # define BOOST_MPL_CFG_NO_QUOTE_TEMPLATE 32 #endif 33 34 #if !defined(BOOST_MPL_CFG_NO_IMPLICIT_METAFUNCTIONS) \ 35 && defined(BOOST_MPL_CFG_NO_HAS_XXX) 36 # define BOOST_MPL_CFG_NO_IMPLICIT_METAFUNCTIONS 37 #endif 38 39 #include <boost/mpl/aux_/config/use_preprocessed.hpp> 40 41 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ 42 && !defined(BOOST_MPL_PREPROCESSING_MODE) 43 44 # define BOOST_MPL_PREPROCESSED_HEADER quote.hpp 45 # include <boost/mpl/aux_/include_preprocessed.hpp> 46 47 #else 48 49 # include <boost/mpl/limits/arity.hpp> 50 # include <boost/mpl/aux_/preprocessor/params.hpp> 51 # include <boost/mpl/aux_/config/ctps.hpp> 52 # include <boost/mpl/aux_/config/workaround.hpp> 53 54 # include <boost/preprocessor/iterate.hpp> 55 # include <boost/preprocessor/cat.hpp> 56 57 #if !defined(BOOST_MPL_CFG_NO_QUOTE_TEMPLATE) 58 59 namespace boost { namespace mpl { 60 61 #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) 62 63 template< typename T, bool has_type_ > 64 struct quote_impl 65 // GCC has a problem with metafunction forwarding when T is a 66 // specialization of a template called 'type'. 67 # if BOOST_WORKAROUND(__GNUC__, BOOST_TESTED_AT(4)) \ 68 && BOOST_WORKAROUND(__GNUC_MINOR__, BOOST_TESTED_AT(0)) \ 69 && BOOST_WORKAROUND(__GNUC_PATCHLEVEL__, BOOST_TESTED_AT(2)) 70 { 71 typedef typename T::type type; 72 }; 73 # else 74 : T 75 { 76 }; 77 # endif 78 79 template< typename T > 80 struct quote_impl<T,false> 81 { 82 typedef T type; 83 }; 84 85 #else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION 86 87 template< bool > struct quote_impl 88 { 89 template< typename T > struct result_ 90 : T 91 { 92 }; 93 }; 94 95 template<> struct quote_impl<false> 96 { 97 template< typename T > struct result_ 98 { 99 typedef T type; 100 }; 101 }; 102 103 #endif 104 105 #define BOOST_PP_ITERATION_PARAMS_1 \ 106 (3,(1, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/quote.hpp>)) 107 #include BOOST_PP_ITERATE() 108 109 }} 110 111 #endif // BOOST_MPL_CFG_NO_QUOTE_TEMPLATE 112 113 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS 114 #endif // BOOST_MPL_QUOTE_HPP_INCLUDED 115 116 ///// iteration 117 118 #else 119 #define i_ BOOST_PP_FRAME_ITERATION(1) 120 121 template< 122 template< BOOST_MPL_PP_PARAMS(i_, typename P) > class F 123 , typename Tag = void_ 124 > 125 struct BOOST_PP_CAT(quote,i_) 126 { 127 template< BOOST_MPL_PP_PARAMS(i_, typename U) > struct apply 128 #if defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS) 129 { 130 typedef typename quote_impl< 131 F< BOOST_MPL_PP_PARAMS(i_, U) > 132 , aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value 133 >::type type; 134 }; 135 #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) 136 : quote_impl< 137 F< BOOST_MPL_PP_PARAMS(i_, U) > 138 , aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value 139 > 140 { 141 }; 142 #else 143 : quote_impl< aux::has_type< F< BOOST_MPL_PP_PARAMS(i_, U) > >::value > 144 ::template result_< F< BOOST_MPL_PP_PARAMS(i_, U) > > 145 { 146 }; 147 #endif 148 }; 149 150 #undef i_ 151 #endif // BOOST_PP_IS_ITERATING 152
