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1 /* |
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2 * |
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3 * Copyright (c) 2003 |
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4 * John Maddock |
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5 * |
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6 * Use, modification and distribution are subject to the |
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7 * Boost Software License, Version 1.0. (See accompanying file |
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8 * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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9 * |
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10 */ |
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11 |
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12 /* |
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13 * LOCATION: see http://www.boost.org for most recent version. |
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14 * FILE regex_traits.hpp |
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15 * VERSION see <boost/version.hpp> |
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16 * DESCRIPTION: Declares regular expression traits classes. |
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17 */ |
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18 |
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19 #ifndef BOOST_REGEX_TRAITS_HPP_INCLUDED |
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20 #define BOOST_REGEX_TRAITS_HPP_INCLUDED |
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21 |
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22 #ifndef BOOST_REGEX_CONFIG_HPP |
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23 #include <boost/regex/config.hpp> |
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24 #endif |
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25 #ifndef BOOST_REGEX_WORKAROUND_HPP |
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26 #include <boost/regex/v4/regex_workaround.hpp> |
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27 #endif |
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28 #ifndef BOOST_REGEX_SYNTAX_TYPE_HPP |
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29 #include <boost/regex/v4/syntax_type.hpp> |
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30 #endif |
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31 #ifndef BOOST_REGEX_ERROR_TYPE_HPP |
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32 #include <boost/regex/v4/error_type.hpp> |
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33 #endif |
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34 #ifndef BOOST_REGEX_TRAITS_DEFAULTS_HPP_INCLUDED |
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35 #include <boost/regex/v4/regex_traits_defaults.hpp> |
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36 #endif |
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37 #ifndef BOOST_NO_STD_LOCALE |
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38 # ifndef BOOST_CPP_REGEX_TRAITS_HPP_INCLUDED |
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39 # include <boost/regex/v4/cpp_regex_traits.hpp> |
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40 # endif |
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41 #endif |
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42 #if !BOOST_WORKAROUND(__BORLANDC__, < 0x560) |
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43 # ifndef BOOST_C_REGEX_TRAITS_HPP_INCLUDED |
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44 # include <boost/regex/v4/c_regex_traits.hpp> |
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45 # endif |
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46 #endif |
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47 #if defined(_WIN32) && !defined(BOOST_REGEX_NO_W32) |
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48 # ifndef BOOST_W32_REGEX_TRAITS_HPP_INCLUDED |
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49 # include <boost/regex/v4/w32_regex_traits.hpp> |
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50 # endif |
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51 #endif |
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52 #ifndef BOOST_REGEX_FWD_HPP_INCLUDED |
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53 #include <boost/regex_fwd.hpp> |
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54 #endif |
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55 |
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56 #include "boost/mpl/has_xxx.hpp" |
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57 #include <boost/static_assert.hpp> |
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58 |
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59 #ifdef BOOST_MSVC |
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60 #pragma warning(push) |
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61 #pragma warning(disable: 4103) |
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62 #endif |
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63 #ifdef BOOST_HAS_ABI_HEADERS |
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64 # include BOOST_ABI_PREFIX |
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65 #endif |
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66 #ifdef BOOST_MSVC |
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67 #pragma warning(pop) |
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68 #endif |
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69 |
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70 namespace boost{ |
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71 |
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72 template <class charT, class implementationT > |
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73 struct regex_traits : public implementationT |
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74 { |
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75 regex_traits() : implementationT() {} |
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76 }; |
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77 |
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78 // |
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79 // class regex_traits_wrapper. |
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80 // this is what our implementation will actually store; |
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81 // it provides default implementations of the "optional" |
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82 // interfaces that we support, in addition to the |
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83 // required "standard" ones: |
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84 // |
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85 namespace re_detail{ |
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86 #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !BOOST_WORKAROUND(__HP_aCC, < 60000) |
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87 BOOST_MPL_HAS_XXX_TRAIT_DEF(boost_extensions_tag) |
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88 #else |
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89 template<class T> |
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90 struct has_boost_extensions_tag |
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91 { |
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92 BOOST_STATIC_CONSTANT(bool, value = false); |
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93 }; |
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94 #endif |
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95 |
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96 template <class BaseT> |
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97 struct default_wrapper : public BaseT |
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98 { |
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99 typedef typename BaseT::char_type char_type; |
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100 std::string error_string(::boost::regex_constants::error_type e)const |
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101 { |
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102 return ::boost::re_detail::get_default_error_string(e); |
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103 } |
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104 ::boost::regex_constants::syntax_type syntax_type(char_type c)const |
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105 { |
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106 return ((c & 0x7f) == c) ? get_default_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::syntax_char; |
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107 } |
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108 ::boost::regex_constants::escape_syntax_type escape_syntax_type(char_type c)const |
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109 { |
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110 return ((c & 0x7f) == c) ? get_default_escape_syntax_type(static_cast<char>(c)) : ::boost::regex_constants::escape_type_identity; |
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111 } |
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112 int toi(const char_type*& p1, const char_type* p2, int radix)const |
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113 { |
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114 return ::boost::re_detail::global_toi(p1, p2, radix, *this); |
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115 } |
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116 char_type translate(char_type c, bool icase)const |
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117 { |
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118 return (icase ? this->translate_nocase(c) : this->translate(c)); |
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119 } |
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120 char_type translate(char_type c)const |
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121 { |
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122 return BaseT::translate(c); |
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123 } |
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124 char_type tolower(char_type c)const |
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125 { |
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126 return ::boost::re_detail::global_lower(c); |
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127 } |
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128 char_type toupper(char_type c)const |
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129 { |
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130 return ::boost::re_detail::global_upper(c); |
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131 } |
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132 }; |
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133 |
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134 template <class BaseT, bool has_extensions> |
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135 struct compute_wrapper_base |
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136 { |
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137 typedef BaseT type; |
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138 }; |
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139 #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !BOOST_WORKAROUND(__HP_aCC, < 60000) |
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140 template <class BaseT> |
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141 struct compute_wrapper_base<BaseT, false> |
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142 { |
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143 typedef default_wrapper<BaseT> type; |
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144 }; |
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145 #else |
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146 template <> |
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147 struct compute_wrapper_base<c_regex_traits<char>, false> |
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148 { |
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149 typedef default_wrapper<c_regex_traits<char> > type; |
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150 }; |
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151 #ifndef BOOST_NO_WREGEX |
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152 template <> |
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153 struct compute_wrapper_base<c_regex_traits<wchar_t>, false> |
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154 { |
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155 typedef default_wrapper<c_regex_traits<wchar_t> > type; |
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156 }; |
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157 #endif |
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158 #endif |
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159 |
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160 } // namespace re_detail |
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161 |
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162 template <class BaseT> |
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163 struct regex_traits_wrapper |
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164 : public ::boost::re_detail::compute_wrapper_base< |
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165 BaseT, |
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166 ::boost::re_detail::has_boost_extensions_tag<BaseT>::value |
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167 >::type |
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168 { |
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169 regex_traits_wrapper(){} |
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170 private: |
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171 regex_traits_wrapper(const regex_traits_wrapper&); |
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172 regex_traits_wrapper& operator=(const regex_traits_wrapper&); |
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173 }; |
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174 |
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175 } // namespace boost |
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176 |
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177 #ifdef BOOST_MSVC |
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178 #pragma warning(push) |
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179 #pragma warning(disable: 4103) |
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180 #endif |
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181 #ifdef BOOST_HAS_ABI_HEADERS |
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182 # include BOOST_ABI_SUFFIX |
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183 #endif |
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184 #ifdef BOOST_MSVC |
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185 #pragma warning(pop) |
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186 #endif |
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187 |
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188 #endif // include |
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189 |