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_WRAP_HPP_INCLUDED |
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7 | #define BOOST_MPL_APPLY_WRAP_HPP_INCLUDED |
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8 | |
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9 | // Copyright Aleksey Gurtovoy 2000-2008 |
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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_wrap.hpp 49272 2008-10-11 06:50:46Z agurtovoy $ |
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18 | // $Date: 2008-10-11 02:50:46 -0400 (Sat, 11 Oct 2008) $ |
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19 | // $Revision: 49272 $ |
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20 | |
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21 | #if !defined(BOOST_MPL_PREPROCESSING_MODE) |
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22 | # include <boost/mpl/aux_/arity.hpp> |
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23 | # include <boost/mpl/aux_/has_apply.hpp> |
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24 | # include <boost/mpl/aux_/na.hpp> |
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25 | # include <boost/mpl/aux_/msvc_never_true.hpp> |
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26 | #endif |
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27 | |
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28 | #include <boost/mpl/aux_/config/use_preprocessed.hpp> |
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29 | |
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30 | #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ |
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31 | && !defined(BOOST_MPL_PREPROCESSING_MODE) |
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32 | |
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33 | # define BOOST_MPL_PREPROCESSED_HEADER apply_wrap.hpp |
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34 | # include <boost/mpl/aux_/include_preprocessed.hpp> |
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35 | |
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36 | #else |
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37 | |
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38 | # include <boost/mpl/limits/arity.hpp> |
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39 | # include <boost/mpl/aux_/preprocessor/params.hpp> |
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40 | # include <boost/mpl/aux_/preprocessor/enum.hpp> |
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41 | # include <boost/mpl/aux_/preprocessor/add.hpp> |
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42 | # include <boost/mpl/aux_/config/bcc.hpp> |
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43 | # include <boost/mpl/aux_/config/ctps.hpp> |
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44 | # include <boost/mpl/aux_/config/dtp.hpp> |
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45 | # include <boost/mpl/aux_/config/eti.hpp> |
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46 | # include <boost/mpl/aux_/config/msvc.hpp> |
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47 | # include <boost/mpl/aux_/config/workaround.hpp> |
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48 | |
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49 | # include <boost/preprocessor/comma_if.hpp> |
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50 | # include <boost/preprocessor/logical/and.hpp> |
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51 | # include <boost/preprocessor/inc.hpp> |
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52 | # include <boost/preprocessor/iterate.hpp> |
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53 | |
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54 | |
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55 | namespace boost { namespace mpl { |
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56 | |
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57 | // local macros, #undef-ined at the end of the header |
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58 | # define AUX778076_APPLY_WRAP_PARAMS(n, param) \ |
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59 | BOOST_MPL_PP_PARAMS(n, param) \ |
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60 | /**/ |
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61 | |
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62 | # define AUX778076_APPLY_WRAP_SPEC_PARAMS(n, param) \ |
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63 | BOOST_MPL_PP_ENUM(BOOST_PP_INC(n), param) \ |
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64 | /**/ |
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65 | |
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66 | |
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67 | #define BOOST_PP_ITERATION_PARAMS_1 \ |
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68 | (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/apply_wrap.hpp>)) |
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69 | #include BOOST_PP_ITERATE() |
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70 | |
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71 | |
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72 | # undef AUX778076_APPLY_WRAP_SPEC_PARAMS |
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73 | # undef AUX778076_APPLY_WRAP_PARAMS |
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74 | |
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75 | }} |
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76 | |
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77 | #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS |
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78 | #endif // BOOST_MPL_APPLY_WRAP_HPP_INCLUDED |
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79 | |
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80 | ///// iteration, depth == 1 |
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81 | |
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82 | // For gcc 4.4 compatability, we must include the |
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83 | // BOOST_PP_ITERATION_DEPTH test inside an #else clause. |
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84 | #else // BOOST_PP_IS_ITERATING |
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85 | #if BOOST_PP_ITERATION_DEPTH() == 1 |
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86 | |
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87 | # define i_ BOOST_PP_FRAME_ITERATION(1) |
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88 | |
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89 | # if BOOST_WORKAROUND(BOOST_MSVC, < 1300) |
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90 | // MSVC version |
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91 | |
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92 | #define AUX778076_MSVC_DTW_NAME BOOST_PP_CAT(msvc_apply,i_) |
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93 | #define AUX778076_MSVC_DTW_ORIGINAL_NAME apply |
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94 | #define AUX778076_MSVC_DTW_ARITY i_ |
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95 | #include <boost/mpl/aux_/msvc_dtw.hpp> |
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96 | |
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97 | template< |
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98 | typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T) |
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99 | > |
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100 | struct BOOST_PP_CAT(apply_wrap,i_) |
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101 | { |
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102 | // Metafunction forwarding confuses vc6 |
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103 | typedef typename BOOST_PP_CAT(msvc_apply,i_)<F>::template result_< |
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104 | AUX778076_APPLY_WRAP_PARAMS(i_, T) |
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105 | >::type type; |
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106 | }; |
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107 | |
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108 | # elif defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES) |
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109 | // MWCW/Borland version |
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110 | |
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111 | template< |
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112 | int N, typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T) |
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113 | > |
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114 | struct BOOST_PP_CAT(apply_wrap_impl,i_); |
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115 | |
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116 | #define BOOST_PP_ITERATION_PARAMS_2 \ |
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117 | (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY - i_, <boost/mpl/apply_wrap.hpp>)) |
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118 | #include BOOST_PP_ITERATE() |
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119 | |
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120 | template< |
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121 | typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T) |
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122 | > |
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123 | struct BOOST_PP_CAT(apply_wrap,i_) |
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124 | : BOOST_PP_CAT(apply_wrap_impl,i_)< |
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125 | ::boost::mpl::aux::arity<F,i_>::value |
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126 | , F |
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127 | BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T) |
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128 | >::type |
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129 | { |
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130 | }; |
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131 | |
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132 | # else |
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133 | // ISO98 C++, with minor concession to vc7 |
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134 | |
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135 | template< |
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136 | typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T) |
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137 | #if i_ == 0 |
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138 | , typename has_apply_ = typename aux::has_apply<F>::type |
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139 | #endif |
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140 | > |
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141 | struct BOOST_PP_CAT(apply_wrap,i_) |
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142 | // metafunction forwarding confuses MSVC 7.0 |
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143 | #if !BOOST_WORKAROUND(BOOST_MSVC, == 1300) |
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144 | : F::template apply< AUX778076_APPLY_WRAP_PARAMS(i_, T) > |
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145 | { |
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146 | #else |
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147 | { |
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148 | typedef typename F::template apply< |
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149 | AUX778076_APPLY_WRAP_PARAMS(i_, T) |
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150 | >::type type; |
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151 | #endif |
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152 | }; |
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153 | |
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154 | #if i_ == 0 && !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
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155 | template< typename F > |
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156 | struct BOOST_PP_CAT(apply_wrap,i_)<F,true_> |
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157 | : F::apply |
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158 | { |
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159 | }; |
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160 | #endif |
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161 | |
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162 | # endif // workarounds |
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163 | |
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164 | #if defined(BOOST_MPL_CFG_MSVC_ETI_BUG) |
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165 | /// workaround for ETI bug |
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166 | template<> |
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167 | struct BOOST_PP_CAT(apply_wrap,i_)<AUX778076_APPLY_WRAP_SPEC_PARAMS(i_, int)> |
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168 | { |
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169 | typedef int type; |
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170 | }; |
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171 | #endif |
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172 | |
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173 | # undef i_ |
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174 | |
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175 | ///// iteration, depth == 2 |
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176 | |
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177 | #elif BOOST_PP_ITERATION_DEPTH() == 2 |
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178 | |
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179 | # define j_ BOOST_PP_FRAME_ITERATION(2) |
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180 | |
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181 | #if i_ == 0 && j_ == 0 \ |
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182 | && defined(BOOST_MPL_CFG_BCC590_WORKAROUNDS) \ |
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183 | && !defined(BOOST_MPL_CFG_NO_HAS_APPLY) |
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184 | |
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185 | template< typename F, bool F_has_apply > |
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186 | struct apply_wrap_impl0_bcb { |
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187 | typedef typename F::template apply< na > type; |
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188 | }; |
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189 | |
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190 | template< typename F > |
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191 | struct apply_wrap_impl0_bcb< F, true > { |
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192 | typedef typename F::apply type; |
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193 | }; |
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194 | |
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195 | template< |
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196 | typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T) |
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197 | > |
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198 | struct BOOST_PP_CAT(apply_wrap_impl,i_)< |
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199 | BOOST_MPL_PP_ADD(i_, j_) |
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200 | , F |
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201 | BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T) |
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202 | > |
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203 | { |
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204 | typedef apply_wrap_impl0_bcb< F, aux::has_apply< F >::value >::type type; |
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205 | }; |
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206 | #else |
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207 | |
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208 | template< |
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209 | typename F BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, typename T) |
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210 | > |
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211 | struct BOOST_PP_CAT(apply_wrap_impl,i_)< |
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212 | BOOST_MPL_PP_ADD(i_, j_) |
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213 | , F |
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214 | BOOST_PP_COMMA_IF(i_) AUX778076_APPLY_WRAP_PARAMS(i_, T) |
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215 | > |
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216 | { |
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217 | typedef typename F::template apply< |
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218 | AUX778076_APPLY_WRAP_PARAMS(i_, T) |
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219 | #if i_ == 0 && j_ == 0 |
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220 | /// since the defaults are "lost", we have to pass *something* even for nullary |
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221 | /// metafunction classes |
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222 | na |
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223 | #else |
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224 | BOOST_PP_COMMA_IF(BOOST_PP_AND(i_, j_)) BOOST_MPL_PP_ENUM(j_, na) |
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225 | #endif |
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226 | > type; |
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227 | }; |
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228 | |
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229 | #endif |
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230 | |
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231 | # undef j_ |
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232 | |
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233 | #endif // BOOST_PP_ITERATION_DEPTH() |
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234 | #endif // BOOST_PP_IS_ITERATING |
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