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1 |
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2 #if !defined(BOOST_PP_IS_ITERATING) |
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3 |
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4 ///// header body |
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5 |
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6 #ifndef BOOST_MPL_APPLY_HPP_INCLUDED |
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7 #define BOOST_MPL_APPLY_HPP_INCLUDED |
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8 |
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9 // Copyright Aleksey Gurtovoy 2000-2004 |
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10 // |
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11 // Distributed under the Boost Software License, Version 1.0. |
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12 // (See accompanying file LICENSE_1_0.txt or copy at |
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13 // http://www.boost.org/LICENSE_1_0.txt) |
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14 // |
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15 // See http://www.boost.org/libs/mpl for documentation. |
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16 |
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17 // $Id: apply.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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18 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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19 // $Revision: 49267 $ |
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20 |
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21 #if !defined(BOOST_MPL_PREPROCESSING_MODE) |
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22 # include <boost/mpl/apply_fwd.hpp> |
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23 # include <boost/mpl/apply_wrap.hpp> |
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24 # include <boost/mpl/placeholders.hpp> |
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25 # include <boost/mpl/lambda.hpp> |
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26 # include <boost/mpl/aux_/na.hpp> |
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27 # include <boost/mpl/aux_/lambda_support.hpp> |
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28 #endif |
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29 |
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30 #include <boost/mpl/aux_/config/use_preprocessed.hpp> |
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31 |
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32 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ |
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33 && !defined(BOOST_MPL_PREPROCESSING_MODE) |
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34 |
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35 # define BOOST_MPL_PREPROCESSED_HEADER apply.hpp |
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36 # include <boost/mpl/aux_/include_preprocessed.hpp> |
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37 |
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38 #else |
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39 |
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40 # include <boost/mpl/limits/arity.hpp> |
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41 # include <boost/mpl/aux_/preprocessor/params.hpp> |
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42 # include <boost/mpl/aux_/preprocessor/default_params.hpp> |
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43 # include <boost/mpl/aux_/preprocessor/partial_spec_params.hpp> |
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44 # include <boost/mpl/aux_/preprocessor/enum.hpp> |
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45 # include <boost/mpl/aux_/config/lambda.hpp> |
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46 # include <boost/mpl/aux_/config/dtp.hpp> |
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47 # include <boost/mpl/aux_/nttp_decl.hpp> |
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48 # include <boost/mpl/aux_/config/eti.hpp> |
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49 # include <boost/mpl/aux_/config/msvc.hpp> |
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50 # include <boost/mpl/aux_/config/workaround.hpp> |
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51 |
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52 # include <boost/preprocessor/comma_if.hpp> |
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53 # include <boost/preprocessor/inc.hpp> |
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54 # include <boost/preprocessor/iterate.hpp> |
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55 # include <boost/preprocessor/cat.hpp> |
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56 |
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57 namespace boost { namespace mpl { |
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58 |
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59 // local macros, #undef-ined at the end of the header |
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60 # define AUX778076_APPLY_PARAMS(param) \ |
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61 BOOST_MPL_PP_PARAMS( \ |
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62 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \ |
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63 , param \ |
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64 ) \ |
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65 /**/ |
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66 |
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67 # define AUX778076_APPLY_DEF_PARAMS(param, value) \ |
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68 BOOST_MPL_PP_DEFAULT_PARAMS( \ |
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69 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \ |
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70 , param \ |
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71 , value \ |
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72 ) \ |
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73 /**/ |
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74 |
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75 # define AUX778076_APPLY_N_PARAMS(n, param) \ |
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76 BOOST_MPL_PP_PARAMS(n, param) \ |
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77 /**/ |
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78 |
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79 # define AUX778076_APPLY_N_COMMA_PARAMS(n, param) \ |
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80 BOOST_PP_COMMA_IF(n) \ |
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81 BOOST_MPL_PP_PARAMS(n, param) \ |
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82 /**/ |
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83 |
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84 # define AUX778076_APPLY_N_PARTIAL_SPEC_PARAMS(n, param, def) \ |
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85 BOOST_PP_COMMA_IF(n) \ |
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86 BOOST_MPL_PP_PARTIAL_SPEC_PARAMS(n, param, def) \ |
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87 /**/ |
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88 |
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89 # define AUX778076_APPLY_N_SPEC_PARAMS(n, param) \ |
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90 BOOST_MPL_PP_ENUM(BOOST_PP_INC(n), param) \ |
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91 /**/ |
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92 |
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93 |
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94 #define BOOST_PP_ITERATION_PARAMS_1 \ |
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95 (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/apply.hpp>)) |
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96 #include BOOST_PP_ITERATE() |
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97 |
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98 # if !defined(BOOST_MPL_CFG_NO_APPLY_TEMPLATE) |
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99 // real C++ version is already taken care of |
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100 # if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
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101 |
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102 namespace aux { |
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103 // apply_count_args |
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104 #define AUX778076_COUNT_ARGS_PREFIX apply |
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105 #define AUX778076_COUNT_ARGS_DEFAULT na |
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106 #define AUX778076_COUNT_ARGS_ARITY BOOST_MPL_LIMIT_METAFUNCTION_ARITY |
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107 #include <boost/mpl/aux_/count_args.hpp> |
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108 } |
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109 |
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110 |
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111 template< |
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112 typename F, AUX778076_APPLY_DEF_PARAMS(typename T, na) |
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113 > |
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114 struct apply |
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115 : aux::apply_chooser< |
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116 aux::apply_count_args< AUX778076_APPLY_PARAMS(T) >::value |
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117 >::template result_< F, AUX778076_APPLY_PARAMS(T) >::type |
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118 { |
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119 }; |
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120 |
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121 # endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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122 # endif // BOOST_MPL_CFG_NO_APPLY_TEMPLATE |
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123 |
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124 # undef AUX778076_APPLY_N_SPEC_PARAMS |
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125 # undef AUX778076_APPLY_N_PARTIAL_SPEC_PARAMS |
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126 # undef AUX778076_APPLY_N_COMMA_PARAMS |
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127 # undef AUX778076_APPLY_N_PARAMS |
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128 # undef AUX778076_APPLY_DEF_PARAMS |
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129 # undef AUX778076_APPLY_PARAMS |
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130 |
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131 }} |
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132 |
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133 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS |
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134 #endif // BOOST_MPL_APPLY_HPP_INCLUDED |
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135 |
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136 ///// iteration, depth == 1 |
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137 |
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138 // For gcc 4.4 compatability, we must include the |
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139 // BOOST_PP_ITERATION_DEPTH test inside an #else clause. |
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140 #else // BOOST_PP_IS_ITERATING |
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141 #if BOOST_PP_ITERATION_DEPTH() == 1 |
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142 |
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143 # define i_ BOOST_PP_FRAME_ITERATION(1) |
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144 |
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145 template< |
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146 typename F AUX778076_APPLY_N_COMMA_PARAMS(i_, typename T) |
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147 > |
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148 struct BOOST_PP_CAT(apply,i_) |
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149 #if !BOOST_WORKAROUND(BOOST_MSVC, < 1300) |
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150 : BOOST_PP_CAT(apply_wrap,i_)< |
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151 typename lambda<F>::type |
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152 AUX778076_APPLY_N_COMMA_PARAMS(i_, T) |
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153 > |
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154 { |
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155 #else |
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156 { |
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157 typedef typename BOOST_PP_CAT(apply_wrap,i_)< |
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158 typename lambda<F>::type |
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159 AUX778076_APPLY_N_COMMA_PARAMS(i_, T) |
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160 >::type type; |
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161 #endif |
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162 BOOST_MPL_AUX_LAMBDA_SUPPORT( |
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163 BOOST_PP_INC(i_) |
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164 , BOOST_PP_CAT(apply,i_) |
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165 , (F AUX778076_APPLY_N_COMMA_PARAMS(i_,T)) |
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166 ) |
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167 }; |
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168 |
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169 |
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170 #if defined(BOOST_MPL_CFG_MSVC_ETI_BUG) |
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171 /// workaround for ETI bug |
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172 template<> |
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173 struct BOOST_PP_CAT(apply,i_)<AUX778076_APPLY_N_SPEC_PARAMS(i_, int)> |
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174 { |
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175 typedef int type; |
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176 }; |
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177 #endif |
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178 |
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179 # if !defined(BOOST_MPL_CFG_NO_APPLY_TEMPLATE) |
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180 # if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
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181 |
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182 #if i_ == BOOST_MPL_LIMIT_METAFUNCTION_ARITY |
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183 /// primary template (not a specialization!) |
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184 template< |
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185 typename F AUX778076_APPLY_N_COMMA_PARAMS(i_, typename T) |
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186 > |
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187 struct apply |
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188 : BOOST_PP_CAT(apply,i_)< F AUX778076_APPLY_N_COMMA_PARAMS(i_, T) > |
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189 { |
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190 }; |
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191 #else |
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192 template< |
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193 typename F AUX778076_APPLY_N_COMMA_PARAMS(i_, typename T) |
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194 > |
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195 struct apply< F AUX778076_APPLY_N_PARTIAL_SPEC_PARAMS(i_, T, na) > |
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196 : BOOST_PP_CAT(apply,i_)< F AUX778076_APPLY_N_COMMA_PARAMS(i_, T) > |
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197 { |
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198 }; |
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199 #endif |
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200 |
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201 # else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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202 |
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203 #if !defined(BOOST_MPL_CFG_NO_APPLY_TEMPLATE) |
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204 namespace aux { |
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205 |
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206 template<> |
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207 struct apply_chooser<i_> |
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208 { |
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209 template< |
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210 typename F, AUX778076_APPLY_PARAMS(typename T) |
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211 > |
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212 struct result_ |
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213 { |
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214 typedef BOOST_PP_CAT(apply,i_)< |
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215 F AUX778076_APPLY_N_COMMA_PARAMS(i_, T) |
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216 > type; |
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217 }; |
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218 }; |
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219 |
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220 } // namespace aux |
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221 #endif |
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222 |
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223 # endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
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224 # endif // BOOST_MPL_CFG_NO_APPLY_TEMPLATE |
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225 |
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226 # undef i_ |
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227 |
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228 #endif // BOOST_PP_ITERATION_DEPTH() |
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229 #endif // BOOST_PP_IS_ITERATING |