1 | // Boost.Function library |
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2 | |
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3 | // Copyright Douglas Gregor 2001-2006 |
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4 | // Copyright Emil Dotchevski 2007 |
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5 | // Use, modification and distribution is subject to the Boost Software License, Version 1.0. |
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6 | // (See accompanying file LICENSE_1_0.txt or copy at |
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7 | // http://www.boost.org/LICENSE_1_0.txt) |
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8 | |
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9 | // For more information, see http://www.boost.org |
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10 | |
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11 | // Note: this header is a header template and must NOT have multiple-inclusion |
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12 | // protection. |
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13 | #include <boost/function/detail/prologue.hpp> |
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14 | #include <boost/detail/no_exceptions_support.hpp> |
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15 | |
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16 | #if defined(BOOST_MSVC) |
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17 | # pragma warning( push ) |
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18 | # pragma warning( disable : 4127 ) // "conditional expression is constant" |
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19 | #endif |
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20 | |
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21 | #define BOOST_FUNCTION_TEMPLATE_PARMS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, typename T) |
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22 | |
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23 | #define BOOST_FUNCTION_TEMPLATE_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, T) |
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24 | |
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25 | #define BOOST_FUNCTION_PARM(J,I,D) BOOST_PP_CAT(T,I) BOOST_PP_CAT(a,I) |
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26 | |
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27 | #define BOOST_FUNCTION_PARMS BOOST_PP_ENUM(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_PARM,BOOST_PP_EMPTY) |
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28 | |
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29 | #define BOOST_FUNCTION_ARGS BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS, a) |
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30 | |
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31 | #define BOOST_FUNCTION_ARG_TYPE(J,I,D) \ |
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32 | typedef BOOST_PP_CAT(T,I) BOOST_PP_CAT(BOOST_PP_CAT(arg, BOOST_PP_INC(I)),_type); |
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33 | |
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34 | #define BOOST_FUNCTION_ARG_TYPES BOOST_PP_REPEAT(BOOST_FUNCTION_NUM_ARGS,BOOST_FUNCTION_ARG_TYPE,BOOST_PP_EMPTY) |
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35 | |
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36 | // Comma if nonzero number of arguments |
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37 | #if BOOST_FUNCTION_NUM_ARGS == 0 |
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38 | # define BOOST_FUNCTION_COMMA |
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39 | #else |
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40 | # define BOOST_FUNCTION_COMMA , |
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41 | #endif // BOOST_FUNCTION_NUM_ARGS > 0 |
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42 | |
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43 | // Class names used in this version of the code |
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44 | #define BOOST_FUNCTION_FUNCTION BOOST_JOIN(function,BOOST_FUNCTION_NUM_ARGS) |
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45 | #define BOOST_FUNCTION_FUNCTION_INVOKER \ |
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46 | BOOST_JOIN(function_invoker,BOOST_FUNCTION_NUM_ARGS) |
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47 | #define BOOST_FUNCTION_VOID_FUNCTION_INVOKER \ |
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48 | BOOST_JOIN(void_function_invoker,BOOST_FUNCTION_NUM_ARGS) |
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49 | #define BOOST_FUNCTION_FUNCTION_OBJ_INVOKER \ |
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50 | BOOST_JOIN(function_obj_invoker,BOOST_FUNCTION_NUM_ARGS) |
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51 | #define BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER \ |
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52 | BOOST_JOIN(void_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS) |
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53 | #define BOOST_FUNCTION_FUNCTION_REF_INVOKER \ |
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54 | BOOST_JOIN(function_ref_invoker,BOOST_FUNCTION_NUM_ARGS) |
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55 | #define BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER \ |
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56 | BOOST_JOIN(void_function_ref_invoker,BOOST_FUNCTION_NUM_ARGS) |
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57 | #define BOOST_FUNCTION_MEMBER_INVOKER \ |
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58 | BOOST_JOIN(function_mem_invoker,BOOST_FUNCTION_NUM_ARGS) |
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59 | #define BOOST_FUNCTION_VOID_MEMBER_INVOKER \ |
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60 | BOOST_JOIN(function_void_mem_invoker,BOOST_FUNCTION_NUM_ARGS) |
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61 | #define BOOST_FUNCTION_GET_FUNCTION_INVOKER \ |
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62 | BOOST_JOIN(get_function_invoker,BOOST_FUNCTION_NUM_ARGS) |
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63 | #define BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER \ |
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64 | BOOST_JOIN(get_function_obj_invoker,BOOST_FUNCTION_NUM_ARGS) |
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65 | #define BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER \ |
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66 | BOOST_JOIN(get_function_ref_invoker,BOOST_FUNCTION_NUM_ARGS) |
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67 | #define BOOST_FUNCTION_GET_MEMBER_INVOKER \ |
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68 | BOOST_JOIN(get_member_invoker,BOOST_FUNCTION_NUM_ARGS) |
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69 | #define BOOST_FUNCTION_GET_INVOKER \ |
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70 | BOOST_JOIN(get_invoker,BOOST_FUNCTION_NUM_ARGS) |
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71 | #define BOOST_FUNCTION_VTABLE BOOST_JOIN(basic_vtable,BOOST_FUNCTION_NUM_ARGS) |
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72 | |
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73 | #ifndef BOOST_NO_VOID_RETURNS |
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74 | # define BOOST_FUNCTION_VOID_RETURN_TYPE void |
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75 | # define BOOST_FUNCTION_RETURN(X) X |
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76 | #else |
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77 | # define BOOST_FUNCTION_VOID_RETURN_TYPE boost::detail::function::unusable |
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78 | # define BOOST_FUNCTION_RETURN(X) X; return BOOST_FUNCTION_VOID_RETURN_TYPE () |
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79 | #endif |
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80 | |
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81 | namespace boost { |
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82 | namespace detail { |
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83 | namespace function { |
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84 | template< |
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85 | typename FunctionPtr, |
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86 | typename R BOOST_FUNCTION_COMMA |
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87 | BOOST_FUNCTION_TEMPLATE_PARMS |
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88 | > |
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89 | struct BOOST_FUNCTION_FUNCTION_INVOKER |
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90 | { |
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91 | static R invoke(function_buffer& function_ptr BOOST_FUNCTION_COMMA |
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92 | BOOST_FUNCTION_PARMS) |
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93 | { |
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94 | FunctionPtr f = reinterpret_cast<FunctionPtr>(function_ptr.func_ptr); |
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95 | return f(BOOST_FUNCTION_ARGS); |
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96 | } |
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97 | }; |
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98 | |
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99 | template< |
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100 | typename FunctionPtr, |
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101 | typename R BOOST_FUNCTION_COMMA |
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102 | BOOST_FUNCTION_TEMPLATE_PARMS |
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103 | > |
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104 | struct BOOST_FUNCTION_VOID_FUNCTION_INVOKER |
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105 | { |
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106 | static BOOST_FUNCTION_VOID_RETURN_TYPE |
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107 | invoke(function_buffer& function_ptr BOOST_FUNCTION_COMMA |
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108 | BOOST_FUNCTION_PARMS) |
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109 | |
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110 | { |
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111 | FunctionPtr f = reinterpret_cast<FunctionPtr>(function_ptr.func_ptr); |
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112 | BOOST_FUNCTION_RETURN(f(BOOST_FUNCTION_ARGS)); |
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113 | } |
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114 | }; |
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115 | |
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116 | template< |
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117 | typename FunctionObj, |
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118 | typename R BOOST_FUNCTION_COMMA |
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119 | BOOST_FUNCTION_TEMPLATE_PARMS |
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120 | > |
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121 | struct BOOST_FUNCTION_FUNCTION_OBJ_INVOKER |
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122 | { |
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123 | static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA |
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124 | BOOST_FUNCTION_PARMS) |
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125 | |
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126 | { |
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127 | FunctionObj* f; |
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128 | if (function_allows_small_object_optimization<FunctionObj>::value) |
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129 | f = reinterpret_cast<FunctionObj*>(&function_obj_ptr.data); |
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130 | else |
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131 | f = reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr); |
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132 | return (*f)(BOOST_FUNCTION_ARGS); |
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133 | } |
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134 | }; |
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135 | |
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136 | template< |
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137 | typename FunctionObj, |
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138 | typename R BOOST_FUNCTION_COMMA |
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139 | BOOST_FUNCTION_TEMPLATE_PARMS |
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140 | > |
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141 | struct BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER |
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142 | { |
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143 | static BOOST_FUNCTION_VOID_RETURN_TYPE |
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144 | invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA |
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145 | BOOST_FUNCTION_PARMS) |
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146 | |
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147 | { |
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148 | FunctionObj* f; |
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149 | if (function_allows_small_object_optimization<FunctionObj>::value) |
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150 | f = reinterpret_cast<FunctionObj*>(&function_obj_ptr.data); |
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151 | else |
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152 | f = reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr); |
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153 | BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS)); |
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154 | } |
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155 | }; |
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156 | |
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157 | template< |
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158 | typename FunctionObj, |
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159 | typename R BOOST_FUNCTION_COMMA |
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160 | BOOST_FUNCTION_TEMPLATE_PARMS |
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161 | > |
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162 | struct BOOST_FUNCTION_FUNCTION_REF_INVOKER |
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163 | { |
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164 | static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA |
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165 | BOOST_FUNCTION_PARMS) |
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166 | |
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167 | { |
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168 | FunctionObj* f = |
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169 | reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr); |
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170 | return (*f)(BOOST_FUNCTION_ARGS); |
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171 | } |
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172 | }; |
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173 | |
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174 | template< |
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175 | typename FunctionObj, |
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176 | typename R BOOST_FUNCTION_COMMA |
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177 | BOOST_FUNCTION_TEMPLATE_PARMS |
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178 | > |
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179 | struct BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER |
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180 | { |
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181 | static BOOST_FUNCTION_VOID_RETURN_TYPE |
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182 | invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA |
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183 | BOOST_FUNCTION_PARMS) |
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184 | |
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185 | { |
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186 | FunctionObj* f = |
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187 | reinterpret_cast<FunctionObj*>(function_obj_ptr.obj_ptr); |
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188 | BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS)); |
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189 | } |
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190 | }; |
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191 | |
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192 | #if BOOST_FUNCTION_NUM_ARGS > 0 |
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193 | /* Handle invocation of member pointers. */ |
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194 | template< |
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195 | typename MemberPtr, |
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196 | typename R BOOST_FUNCTION_COMMA |
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197 | BOOST_FUNCTION_TEMPLATE_PARMS |
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198 | > |
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199 | struct BOOST_FUNCTION_MEMBER_INVOKER |
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200 | { |
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201 | static R invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA |
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202 | BOOST_FUNCTION_PARMS) |
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203 | |
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204 | { |
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205 | MemberPtr* f = |
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206 | reinterpret_cast<MemberPtr*>(&function_obj_ptr.data); |
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207 | return boost::mem_fn(*f)(BOOST_FUNCTION_ARGS); |
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208 | } |
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209 | }; |
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210 | |
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211 | template< |
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212 | typename MemberPtr, |
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213 | typename R BOOST_FUNCTION_COMMA |
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214 | BOOST_FUNCTION_TEMPLATE_PARMS |
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215 | > |
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216 | struct BOOST_FUNCTION_VOID_MEMBER_INVOKER |
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217 | { |
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218 | static BOOST_FUNCTION_VOID_RETURN_TYPE |
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219 | invoke(function_buffer& function_obj_ptr BOOST_FUNCTION_COMMA |
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220 | BOOST_FUNCTION_PARMS) |
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221 | |
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222 | { |
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223 | MemberPtr* f = |
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224 | reinterpret_cast<MemberPtr*>(&function_obj_ptr.data); |
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225 | BOOST_FUNCTION_RETURN(boost::mem_fn(*f)(BOOST_FUNCTION_ARGS)); |
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226 | } |
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227 | }; |
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228 | #endif |
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229 | |
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230 | template< |
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231 | typename FunctionPtr, |
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232 | typename R BOOST_FUNCTION_COMMA |
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233 | BOOST_FUNCTION_TEMPLATE_PARMS |
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234 | > |
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235 | struct BOOST_FUNCTION_GET_FUNCTION_INVOKER |
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236 | { |
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237 | typedef typename mpl::if_c<(is_void<R>::value), |
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238 | BOOST_FUNCTION_VOID_FUNCTION_INVOKER< |
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239 | FunctionPtr, |
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240 | R BOOST_FUNCTION_COMMA |
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241 | BOOST_FUNCTION_TEMPLATE_ARGS |
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242 | >, |
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243 | BOOST_FUNCTION_FUNCTION_INVOKER< |
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244 | FunctionPtr, |
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245 | R BOOST_FUNCTION_COMMA |
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246 | BOOST_FUNCTION_TEMPLATE_ARGS |
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247 | > |
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248 | >::type type; |
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249 | }; |
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250 | |
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251 | template< |
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252 | typename FunctionObj, |
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253 | typename R BOOST_FUNCTION_COMMA |
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254 | BOOST_FUNCTION_TEMPLATE_PARMS |
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255 | > |
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256 | struct BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER |
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257 | { |
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258 | typedef typename mpl::if_c<(is_void<R>::value), |
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259 | BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER< |
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260 | FunctionObj, |
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261 | R BOOST_FUNCTION_COMMA |
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262 | BOOST_FUNCTION_TEMPLATE_ARGS |
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263 | >, |
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264 | BOOST_FUNCTION_FUNCTION_OBJ_INVOKER< |
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265 | FunctionObj, |
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266 | R BOOST_FUNCTION_COMMA |
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267 | BOOST_FUNCTION_TEMPLATE_ARGS |
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268 | > |
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269 | >::type type; |
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270 | }; |
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271 | |
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272 | template< |
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273 | typename FunctionObj, |
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274 | typename R BOOST_FUNCTION_COMMA |
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275 | BOOST_FUNCTION_TEMPLATE_PARMS |
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276 | > |
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277 | struct BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER |
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278 | { |
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279 | typedef typename mpl::if_c<(is_void<R>::value), |
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280 | BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER< |
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281 | FunctionObj, |
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282 | R BOOST_FUNCTION_COMMA |
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283 | BOOST_FUNCTION_TEMPLATE_ARGS |
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284 | >, |
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285 | BOOST_FUNCTION_FUNCTION_REF_INVOKER< |
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286 | FunctionObj, |
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287 | R BOOST_FUNCTION_COMMA |
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288 | BOOST_FUNCTION_TEMPLATE_ARGS |
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289 | > |
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290 | >::type type; |
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291 | }; |
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292 | |
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293 | #if BOOST_FUNCTION_NUM_ARGS > 0 |
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294 | /* Retrieve the appropriate invoker for a member pointer. */ |
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295 | template< |
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296 | typename MemberPtr, |
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297 | typename R BOOST_FUNCTION_COMMA |
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298 | BOOST_FUNCTION_TEMPLATE_PARMS |
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299 | > |
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300 | struct BOOST_FUNCTION_GET_MEMBER_INVOKER |
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301 | { |
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302 | typedef typename mpl::if_c<(is_void<R>::value), |
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303 | BOOST_FUNCTION_VOID_MEMBER_INVOKER< |
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304 | MemberPtr, |
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305 | R BOOST_FUNCTION_COMMA |
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306 | BOOST_FUNCTION_TEMPLATE_ARGS |
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307 | >, |
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308 | BOOST_FUNCTION_MEMBER_INVOKER< |
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309 | MemberPtr, |
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310 | R BOOST_FUNCTION_COMMA |
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311 | BOOST_FUNCTION_TEMPLATE_ARGS |
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312 | > |
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313 | >::type type; |
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314 | }; |
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315 | #endif |
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316 | |
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317 | /* Given the tag returned by get_function_tag, retrieve the |
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318 | actual invoker that will be used for the given function |
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319 | object. |
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320 | |
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321 | Each specialization contains an "apply" nested class template |
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322 | that accepts the function object, return type, function |
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323 | argument types, and allocator. The resulting "apply" class |
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324 | contains two typedefs, "invoker_type" and "manager_type", |
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325 | which correspond to the invoker and manager types. */ |
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326 | template<typename Tag> |
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327 | struct BOOST_FUNCTION_GET_INVOKER { }; |
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328 | |
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329 | /* Retrieve the invoker for a function pointer. */ |
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330 | template<> |
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331 | struct BOOST_FUNCTION_GET_INVOKER<function_ptr_tag> |
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332 | { |
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333 | template<typename FunctionPtr, |
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334 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
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335 | struct apply |
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336 | { |
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337 | typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER< |
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338 | FunctionPtr, |
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339 | R BOOST_FUNCTION_COMMA |
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340 | BOOST_FUNCTION_TEMPLATE_ARGS |
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341 | >::type |
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342 | invoker_type; |
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343 | |
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344 | typedef functor_manager<FunctionPtr> manager_type; |
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345 | }; |
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346 | |
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347 | template<typename FunctionPtr, |
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348 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS, |
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349 | typename Allocator> |
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350 | struct apply_a |
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351 | { |
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352 | typedef typename BOOST_FUNCTION_GET_FUNCTION_INVOKER< |
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353 | FunctionPtr, |
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354 | R BOOST_FUNCTION_COMMA |
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355 | BOOST_FUNCTION_TEMPLATE_ARGS |
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356 | >::type |
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357 | invoker_type; |
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358 | |
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359 | typedef functor_manager<FunctionPtr> manager_type; |
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360 | }; |
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361 | }; |
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362 | |
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363 | #if BOOST_FUNCTION_NUM_ARGS > 0 |
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364 | /* Retrieve the invoker for a member pointer. */ |
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365 | template<> |
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366 | struct BOOST_FUNCTION_GET_INVOKER<member_ptr_tag> |
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367 | { |
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368 | template<typename MemberPtr, |
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369 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
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370 | struct apply |
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371 | { |
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372 | typedef typename BOOST_FUNCTION_GET_MEMBER_INVOKER< |
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373 | MemberPtr, |
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374 | R BOOST_FUNCTION_COMMA |
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375 | BOOST_FUNCTION_TEMPLATE_ARGS |
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376 | >::type |
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377 | invoker_type; |
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378 | |
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379 | typedef functor_manager<MemberPtr> manager_type; |
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380 | }; |
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381 | |
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382 | template<typename MemberPtr, |
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383 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS, |
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384 | typename Allocator> |
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385 | struct apply_a |
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386 | { |
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387 | typedef typename BOOST_FUNCTION_GET_MEMBER_INVOKER< |
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388 | MemberPtr, |
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389 | R BOOST_FUNCTION_COMMA |
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390 | BOOST_FUNCTION_TEMPLATE_ARGS |
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391 | >::type |
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392 | invoker_type; |
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393 | |
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394 | typedef functor_manager<MemberPtr> manager_type; |
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395 | }; |
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396 | }; |
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397 | #endif |
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398 | |
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399 | /* Retrieve the invoker for a function object. */ |
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400 | template<> |
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401 | struct BOOST_FUNCTION_GET_INVOKER<function_obj_tag> |
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402 | { |
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403 | template<typename FunctionObj, |
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404 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
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405 | struct apply |
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406 | { |
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407 | typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER< |
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408 | FunctionObj, |
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409 | R BOOST_FUNCTION_COMMA |
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410 | BOOST_FUNCTION_TEMPLATE_ARGS |
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411 | >::type |
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412 | invoker_type; |
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413 | |
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414 | typedef functor_manager<FunctionObj> manager_type; |
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415 | }; |
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416 | |
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417 | template<typename FunctionObj, |
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418 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS, |
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419 | typename Allocator> |
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420 | struct apply_a |
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421 | { |
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422 | typedef typename BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER< |
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423 | FunctionObj, |
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424 | R BOOST_FUNCTION_COMMA |
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425 | BOOST_FUNCTION_TEMPLATE_ARGS |
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426 | >::type |
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427 | invoker_type; |
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428 | |
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429 | typedef functor_manager_a<FunctionObj, Allocator> manager_type; |
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430 | }; |
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431 | }; |
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432 | |
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433 | /* Retrieve the invoker for a reference to a function object. */ |
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434 | template<> |
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435 | struct BOOST_FUNCTION_GET_INVOKER<function_obj_ref_tag> |
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436 | { |
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437 | template<typename RefWrapper, |
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438 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
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439 | struct apply |
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440 | { |
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441 | typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER< |
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442 | typename RefWrapper::type, |
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443 | R BOOST_FUNCTION_COMMA |
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444 | BOOST_FUNCTION_TEMPLATE_ARGS |
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445 | >::type |
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446 | invoker_type; |
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447 | |
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448 | typedef reference_manager<typename RefWrapper::type> manager_type; |
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449 | }; |
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450 | |
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451 | template<typename RefWrapper, |
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452 | typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS, |
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453 | typename Allocator> |
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454 | struct apply_a |
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455 | { |
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456 | typedef typename BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER< |
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457 | typename RefWrapper::type, |
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458 | R BOOST_FUNCTION_COMMA |
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459 | BOOST_FUNCTION_TEMPLATE_ARGS |
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460 | >::type |
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461 | invoker_type; |
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462 | |
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463 | typedef reference_manager<typename RefWrapper::type> manager_type; |
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464 | }; |
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465 | }; |
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466 | |
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467 | |
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468 | /** |
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469 | * vtable for a specific boost::function instance. This |
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470 | * structure must be an aggregate so that we can use static |
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471 | * initialization in boost::function's assign_to and assign_to_a |
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472 | * members. It therefore cannot have any constructors, |
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473 | * destructors, base classes, etc. |
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474 | */ |
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475 | template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
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476 | struct BOOST_FUNCTION_VTABLE |
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477 | { |
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478 | #ifndef BOOST_NO_VOID_RETURNS |
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479 | typedef R result_type; |
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480 | #else |
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481 | typedef typename function_return_type<R>::type result_type; |
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482 | #endif // BOOST_NO_VOID_RETURNS |
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483 | |
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484 | typedef result_type (*invoker_type)(function_buffer& |
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485 | BOOST_FUNCTION_COMMA |
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486 | BOOST_FUNCTION_TEMPLATE_ARGS); |
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487 | |
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488 | template<typename F> |
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489 | bool assign_to(F f, function_buffer& functor) |
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490 | { |
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491 | typedef typename get_function_tag<F>::type tag; |
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492 | return assign_to(f, functor, tag()); |
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493 | } |
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494 | template<typename F,typename Allocator> |
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495 | bool assign_to_a(F f, function_buffer& functor, Allocator a) |
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496 | { |
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497 | typedef typename get_function_tag<F>::type tag; |
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498 | return assign_to_a(f, functor, a, tag()); |
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499 | } |
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500 | |
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501 | void clear(function_buffer& functor) |
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502 | { |
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503 | if (base.manager) |
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504 | base.manager(functor, functor, destroy_functor_tag); |
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505 | } |
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506 | |
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507 | private: |
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508 | // Function pointers |
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509 | template<typename FunctionPtr> |
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510 | bool |
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511 | assign_to(FunctionPtr f, function_buffer& functor, function_ptr_tag) |
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512 | { |
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513 | this->clear(functor); |
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514 | if (f) { |
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515 | // should be a reinterpret cast, but some compilers insist |
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516 | // on giving cv-qualifiers to free functions |
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517 | functor.func_ptr = (void (*)())(f); |
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518 | return true; |
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519 | } else { |
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520 | return false; |
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521 | } |
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522 | } |
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523 | template<typename FunctionPtr,typename Allocator> |
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524 | bool |
---|
525 | assign_to_a(FunctionPtr f, function_buffer& functor, Allocator, function_ptr_tag) |
---|
526 | { |
---|
527 | return assign_to(f,functor,function_ptr_tag()); |
---|
528 | } |
---|
529 | |
---|
530 | // Member pointers |
---|
531 | #if BOOST_FUNCTION_NUM_ARGS > 0 |
---|
532 | template<typename MemberPtr> |
---|
533 | bool assign_to(MemberPtr f, function_buffer& functor, member_ptr_tag) |
---|
534 | { |
---|
535 | // DPG TBD: Add explicit support for member function |
---|
536 | // objects, so we invoke through mem_fn() but we retain the |
---|
537 | // right target_type() values. |
---|
538 | if (f) { |
---|
539 | this->assign_to(mem_fn(f), functor); |
---|
540 | return true; |
---|
541 | } else { |
---|
542 | return false; |
---|
543 | } |
---|
544 | } |
---|
545 | template<typename MemberPtr,typename Allocator> |
---|
546 | bool assign_to_a(MemberPtr f, function_buffer& functor, Allocator a, member_ptr_tag) |
---|
547 | { |
---|
548 | // DPG TBD: Add explicit support for member function |
---|
549 | // objects, so we invoke through mem_fn() but we retain the |
---|
550 | // right target_type() values. |
---|
551 | if (f) { |
---|
552 | this->assign_to_a(mem_fn(f), functor, a); |
---|
553 | return true; |
---|
554 | } else { |
---|
555 | return false; |
---|
556 | } |
---|
557 | } |
---|
558 | #endif // BOOST_FUNCTION_NUM_ARGS > 0 |
---|
559 | |
---|
560 | // Function objects |
---|
561 | // Assign to a function object using the small object optimization |
---|
562 | template<typename FunctionObj> |
---|
563 | void |
---|
564 | assign_functor(FunctionObj f, function_buffer& functor, mpl::true_) |
---|
565 | { |
---|
566 | new ((void*)&functor.data) FunctionObj(f); |
---|
567 | } |
---|
568 | template<typename FunctionObj,typename Allocator> |
---|
569 | void |
---|
570 | assign_functor_a(FunctionObj f, function_buffer& functor, Allocator, mpl::true_) |
---|
571 | { |
---|
572 | assign_functor(f,functor,mpl::true_()); |
---|
573 | } |
---|
574 | |
---|
575 | // Assign to a function object allocated on the heap. |
---|
576 | template<typename FunctionObj> |
---|
577 | void |
---|
578 | assign_functor(FunctionObj f, function_buffer& functor, mpl::false_) |
---|
579 | { |
---|
580 | functor.obj_ptr = new FunctionObj(f); |
---|
581 | } |
---|
582 | template<typename FunctionObj,typename Allocator> |
---|
583 | void |
---|
584 | assign_functor_a(FunctionObj f, function_buffer& functor, Allocator a, mpl::false_) |
---|
585 | { |
---|
586 | typedef functor_wrapper<FunctionObj,Allocator> functor_wrapper_type; |
---|
587 | typedef typename Allocator::template rebind<functor_wrapper_type>::other |
---|
588 | wrapper_allocator_type; |
---|
589 | typedef typename wrapper_allocator_type::pointer wrapper_allocator_pointer_type; |
---|
590 | wrapper_allocator_type wrapper_allocator(a); |
---|
591 | wrapper_allocator_pointer_type copy = wrapper_allocator.allocate(1); |
---|
592 | wrapper_allocator.construct(copy, functor_wrapper_type(f,a)); |
---|
593 | functor_wrapper_type* new_f = static_cast<functor_wrapper_type*>(copy); |
---|
594 | functor.obj_ptr = new_f; |
---|
595 | } |
---|
596 | |
---|
597 | template<typename FunctionObj> |
---|
598 | bool |
---|
599 | assign_to(FunctionObj f, function_buffer& functor, function_obj_tag) |
---|
600 | { |
---|
601 | if (!boost::detail::function::has_empty_target(boost::addressof(f))) { |
---|
602 | assign_functor(f, functor, |
---|
603 | mpl::bool_<(function_allows_small_object_optimization<FunctionObj>::value)>()); |
---|
604 | return true; |
---|
605 | } else { |
---|
606 | return false; |
---|
607 | } |
---|
608 | } |
---|
609 | template<typename FunctionObj,typename Allocator> |
---|
610 | bool |
---|
611 | assign_to_a(FunctionObj f, function_buffer& functor, Allocator a, function_obj_tag) |
---|
612 | { |
---|
613 | if (!boost::detail::function::has_empty_target(boost::addressof(f))) { |
---|
614 | assign_functor_a(f, functor, a, |
---|
615 | mpl::bool_<(function_allows_small_object_optimization<FunctionObj>::value)>()); |
---|
616 | return true; |
---|
617 | } else { |
---|
618 | return false; |
---|
619 | } |
---|
620 | } |
---|
621 | |
---|
622 | // Reference to a function object |
---|
623 | template<typename FunctionObj> |
---|
624 | bool |
---|
625 | assign_to(const reference_wrapper<FunctionObj>& f, |
---|
626 | function_buffer& functor, function_obj_ref_tag) |
---|
627 | { |
---|
628 | functor.obj_ref.obj_ptr = (void *)f.get_pointer(); |
---|
629 | functor.obj_ref.is_const_qualified = is_const<FunctionObj>::value; |
---|
630 | functor.obj_ref.is_volatile_qualified = is_volatile<FunctionObj>::value; |
---|
631 | return true; |
---|
632 | } |
---|
633 | template<typename FunctionObj,typename Allocator> |
---|
634 | bool |
---|
635 | assign_to_a(const reference_wrapper<FunctionObj>& f, |
---|
636 | function_buffer& functor, Allocator, function_obj_ref_tag) |
---|
637 | { |
---|
638 | return assign_to(f,functor,function_obj_ref_tag()); |
---|
639 | } |
---|
640 | |
---|
641 | public: |
---|
642 | vtable_base base; |
---|
643 | invoker_type invoker; |
---|
644 | }; |
---|
645 | } // end namespace function |
---|
646 | } // end namespace detail |
---|
647 | |
---|
648 | template< |
---|
649 | typename R BOOST_FUNCTION_COMMA |
---|
650 | BOOST_FUNCTION_TEMPLATE_PARMS |
---|
651 | > |
---|
652 | class BOOST_FUNCTION_FUNCTION : public function_base |
---|
653 | |
---|
654 | #if BOOST_FUNCTION_NUM_ARGS == 1 |
---|
655 | |
---|
656 | , public std::unary_function<T0,R> |
---|
657 | |
---|
658 | #elif BOOST_FUNCTION_NUM_ARGS == 2 |
---|
659 | |
---|
660 | , public std::binary_function<T0,T1,R> |
---|
661 | |
---|
662 | #endif |
---|
663 | |
---|
664 | { |
---|
665 | public: |
---|
666 | #ifndef BOOST_NO_VOID_RETURNS |
---|
667 | typedef R result_type; |
---|
668 | #else |
---|
669 | typedef typename boost::detail::function::function_return_type<R>::type |
---|
670 | result_type; |
---|
671 | #endif // BOOST_NO_VOID_RETURNS |
---|
672 | |
---|
673 | private: |
---|
674 | typedef boost::detail::function::BOOST_FUNCTION_VTABLE< |
---|
675 | R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS> |
---|
676 | vtable_type; |
---|
677 | |
---|
678 | vtable_type* get_vtable() const { |
---|
679 | return reinterpret_cast<vtable_type*>( |
---|
680 | reinterpret_cast<std::size_t>(vtable) & ~(std::size_t)0x01); |
---|
681 | } |
---|
682 | |
---|
683 | struct clear_type {}; |
---|
684 | |
---|
685 | public: |
---|
686 | BOOST_STATIC_CONSTANT(int, args = BOOST_FUNCTION_NUM_ARGS); |
---|
687 | |
---|
688 | // add signature for boost::lambda |
---|
689 | template<typename Args> |
---|
690 | struct sig |
---|
691 | { |
---|
692 | typedef result_type type; |
---|
693 | }; |
---|
694 | |
---|
695 | #if BOOST_FUNCTION_NUM_ARGS == 1 |
---|
696 | typedef T0 argument_type; |
---|
697 | #elif BOOST_FUNCTION_NUM_ARGS == 2 |
---|
698 | typedef T0 first_argument_type; |
---|
699 | typedef T1 second_argument_type; |
---|
700 | #endif |
---|
701 | |
---|
702 | BOOST_STATIC_CONSTANT(int, arity = BOOST_FUNCTION_NUM_ARGS); |
---|
703 | BOOST_FUNCTION_ARG_TYPES |
---|
704 | |
---|
705 | typedef BOOST_FUNCTION_FUNCTION self_type; |
---|
706 | |
---|
707 | BOOST_FUNCTION_FUNCTION() : function_base() { } |
---|
708 | |
---|
709 | // MSVC chokes if the following two constructors are collapsed into |
---|
710 | // one with a default parameter. |
---|
711 | template<typename Functor> |
---|
712 | BOOST_FUNCTION_FUNCTION(Functor BOOST_FUNCTION_TARGET_FIX(const &) f |
---|
713 | #ifndef BOOST_NO_SFINAE |
---|
714 | ,typename enable_if_c< |
---|
715 | (boost::type_traits::ice_not< |
---|
716 | (is_integral<Functor>::value)>::value), |
---|
717 | int>::type = 0 |
---|
718 | #endif // BOOST_NO_SFINAE |
---|
719 | ) : |
---|
720 | function_base() |
---|
721 | { |
---|
722 | this->assign_to(f); |
---|
723 | } |
---|
724 | template<typename Functor,typename Allocator> |
---|
725 | BOOST_FUNCTION_FUNCTION(Functor BOOST_FUNCTION_TARGET_FIX(const &) f, Allocator a |
---|
726 | #ifndef BOOST_NO_SFINAE |
---|
727 | ,typename enable_if_c< |
---|
728 | (boost::type_traits::ice_not< |
---|
729 | (is_integral<Functor>::value)>::value), |
---|
730 | int>::type = 0 |
---|
731 | #endif // BOOST_NO_SFINAE |
---|
732 | ) : |
---|
733 | function_base() |
---|
734 | { |
---|
735 | this->assign_to_a(f,a); |
---|
736 | } |
---|
737 | |
---|
738 | #ifndef BOOST_NO_SFINAE |
---|
739 | BOOST_FUNCTION_FUNCTION(clear_type*) : function_base() { } |
---|
740 | #else |
---|
741 | BOOST_FUNCTION_FUNCTION(int zero) : function_base() |
---|
742 | { |
---|
743 | BOOST_ASSERT(zero == 0); |
---|
744 | } |
---|
745 | #endif |
---|
746 | |
---|
747 | BOOST_FUNCTION_FUNCTION(const BOOST_FUNCTION_FUNCTION& f) : function_base() |
---|
748 | { |
---|
749 | this->assign_to_own(f); |
---|
750 | } |
---|
751 | |
---|
752 | ~BOOST_FUNCTION_FUNCTION() { clear(); } |
---|
753 | |
---|
754 | #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) |
---|
755 | // MSVC 6.0 and prior require all definitions to be inline, but |
---|
756 | // these definitions can become very costly. |
---|
757 | result_type operator()(BOOST_FUNCTION_PARMS) const |
---|
758 | { |
---|
759 | if (this->empty()) |
---|
760 | boost::throw_exception(bad_function_call()); |
---|
761 | |
---|
762 | return get_vtable()->invoker |
---|
763 | (this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS); |
---|
764 | } |
---|
765 | #else |
---|
766 | result_type operator()(BOOST_FUNCTION_PARMS) const; |
---|
767 | #endif |
---|
768 | |
---|
769 | // The distinction between when to use BOOST_FUNCTION_FUNCTION and |
---|
770 | // when to use self_type is obnoxious. MSVC cannot handle self_type as |
---|
771 | // the return type of these assignment operators, but Borland C++ cannot |
---|
772 | // handle BOOST_FUNCTION_FUNCTION as the type of the temporary to |
---|
773 | // construct. |
---|
774 | template<typename Functor> |
---|
775 | #ifndef BOOST_NO_SFINAE |
---|
776 | typename enable_if_c< |
---|
777 | (boost::type_traits::ice_not< |
---|
778 | (is_integral<Functor>::value)>::value), |
---|
779 | BOOST_FUNCTION_FUNCTION&>::type |
---|
780 | #else |
---|
781 | BOOST_FUNCTION_FUNCTION& |
---|
782 | #endif |
---|
783 | operator=(Functor BOOST_FUNCTION_TARGET_FIX(const &) f) |
---|
784 | { |
---|
785 | this->clear(); |
---|
786 | BOOST_TRY { |
---|
787 | this->assign_to(f); |
---|
788 | } BOOST_CATCH (...) { |
---|
789 | vtable = 0; |
---|
790 | BOOST_RETHROW; |
---|
791 | } |
---|
792 | BOOST_CATCH_END |
---|
793 | return *this; |
---|
794 | } |
---|
795 | template<typename Functor,typename Allocator> |
---|
796 | void assign(Functor BOOST_FUNCTION_TARGET_FIX(const &) f, Allocator a) |
---|
797 | { |
---|
798 | this->clear(); |
---|
799 | BOOST_TRY{ |
---|
800 | this->assign_to_a(f,a); |
---|
801 | } BOOST_CATCH (...) { |
---|
802 | vtable = 0; |
---|
803 | BOOST_RETHROW; |
---|
804 | } |
---|
805 | BOOST_CATCH_END |
---|
806 | } |
---|
807 | |
---|
808 | #ifndef BOOST_NO_SFINAE |
---|
809 | BOOST_FUNCTION_FUNCTION& operator=(clear_type*) |
---|
810 | { |
---|
811 | this->clear(); |
---|
812 | return *this; |
---|
813 | } |
---|
814 | #else |
---|
815 | BOOST_FUNCTION_FUNCTION& operator=(int zero) |
---|
816 | { |
---|
817 | BOOST_ASSERT(zero == 0); |
---|
818 | this->clear(); |
---|
819 | return *this; |
---|
820 | } |
---|
821 | #endif |
---|
822 | |
---|
823 | // Assignment from another BOOST_FUNCTION_FUNCTION |
---|
824 | BOOST_FUNCTION_FUNCTION& operator=(const BOOST_FUNCTION_FUNCTION& f) |
---|
825 | { |
---|
826 | if (&f == this) |
---|
827 | return *this; |
---|
828 | |
---|
829 | this->clear(); |
---|
830 | BOOST_TRY { |
---|
831 | this->assign_to_own(f); |
---|
832 | } BOOST_CATCH (...) { |
---|
833 | vtable = 0; |
---|
834 | BOOST_RETHROW; |
---|
835 | } |
---|
836 | BOOST_CATCH_END |
---|
837 | return *this; |
---|
838 | } |
---|
839 | |
---|
840 | void swap(BOOST_FUNCTION_FUNCTION& other) |
---|
841 | { |
---|
842 | if (&other == this) |
---|
843 | return; |
---|
844 | |
---|
845 | BOOST_FUNCTION_FUNCTION tmp; |
---|
846 | tmp.move_assign(*this); |
---|
847 | this->move_assign(other); |
---|
848 | other.move_assign(tmp); |
---|
849 | } |
---|
850 | |
---|
851 | // Clear out a target, if there is one |
---|
852 | void clear() |
---|
853 | { |
---|
854 | if (vtable) { |
---|
855 | if (!this->has_trivial_copy_and_destroy()) |
---|
856 | get_vtable()->clear(this->functor); |
---|
857 | vtable = 0; |
---|
858 | } |
---|
859 | } |
---|
860 | |
---|
861 | #if (defined __SUNPRO_CC) && (__SUNPRO_CC <= 0x530) && !(defined BOOST_NO_COMPILER_CONFIG) |
---|
862 | // Sun C++ 5.3 can't handle the safe_bool idiom, so don't use it |
---|
863 | operator bool () const { return !this->empty(); } |
---|
864 | #else |
---|
865 | private: |
---|
866 | struct dummy { |
---|
867 | void nonnull() {}; |
---|
868 | }; |
---|
869 | |
---|
870 | typedef void (dummy::*safe_bool)(); |
---|
871 | |
---|
872 | public: |
---|
873 | operator safe_bool () const |
---|
874 | { return (this->empty())? 0 : &dummy::nonnull; } |
---|
875 | |
---|
876 | bool operator!() const |
---|
877 | { return this->empty(); } |
---|
878 | #endif |
---|
879 | |
---|
880 | private: |
---|
881 | void assign_to_own(const BOOST_FUNCTION_FUNCTION& f) |
---|
882 | { |
---|
883 | if (!f.empty()) { |
---|
884 | this->vtable = f.vtable; |
---|
885 | if (this->has_trivial_copy_and_destroy()) |
---|
886 | this->functor = f.functor; |
---|
887 | else |
---|
888 | get_vtable()->base.manager(f.functor, this->functor, |
---|
889 | boost::detail::function::clone_functor_tag); |
---|
890 | } |
---|
891 | } |
---|
892 | |
---|
893 | template<typename Functor> |
---|
894 | void assign_to(Functor f) |
---|
895 | { |
---|
896 | using detail::function::vtable_base; |
---|
897 | |
---|
898 | typedef typename detail::function::get_function_tag<Functor>::type tag; |
---|
899 | typedef detail::function::BOOST_FUNCTION_GET_INVOKER<tag> get_invoker; |
---|
900 | typedef typename get_invoker:: |
---|
901 | template apply<Functor, R BOOST_FUNCTION_COMMA |
---|
902 | BOOST_FUNCTION_TEMPLATE_ARGS> |
---|
903 | handler_type; |
---|
904 | |
---|
905 | typedef typename handler_type::invoker_type invoker_type; |
---|
906 | typedef typename handler_type::manager_type manager_type; |
---|
907 | |
---|
908 | // Note: it is extremely important that this initialization use |
---|
909 | // static initialization. Otherwise, we will have a race |
---|
910 | // condition here in multi-threaded code. See |
---|
911 | // http://thread.gmane.org/gmane.comp.lib.boost.devel/164902/. |
---|
912 | static vtable_type stored_vtable = |
---|
913 | { { &manager_type::manage }, &invoker_type::invoke }; |
---|
914 | |
---|
915 | if (stored_vtable.assign_to(f, functor)) { |
---|
916 | std::size_t value = reinterpret_cast<std::size_t>(&stored_vtable.base); |
---|
917 | if (boost::has_trivial_copy_constructor<Functor>::value && |
---|
918 | boost::has_trivial_destructor<Functor>::value && |
---|
919 | detail::function::function_allows_small_object_optimization<Functor>::value) |
---|
920 | value |= (std::size_t)0x01; |
---|
921 | vtable = reinterpret_cast<detail::function::vtable_base *>(value); |
---|
922 | } else |
---|
923 | vtable = 0; |
---|
924 | } |
---|
925 | |
---|
926 | template<typename Functor,typename Allocator> |
---|
927 | void assign_to_a(Functor f,Allocator a) |
---|
928 | { |
---|
929 | using detail::function::vtable_base; |
---|
930 | |
---|
931 | typedef typename detail::function::get_function_tag<Functor>::type tag; |
---|
932 | typedef detail::function::BOOST_FUNCTION_GET_INVOKER<tag> get_invoker; |
---|
933 | typedef typename get_invoker:: |
---|
934 | template apply_a<Functor, R BOOST_FUNCTION_COMMA |
---|
935 | BOOST_FUNCTION_TEMPLATE_ARGS, |
---|
936 | Allocator> |
---|
937 | handler_type; |
---|
938 | |
---|
939 | typedef typename handler_type::invoker_type invoker_type; |
---|
940 | typedef typename handler_type::manager_type manager_type; |
---|
941 | |
---|
942 | // Note: it is extremely important that this initialization use |
---|
943 | // static initialization. Otherwise, we will have a race |
---|
944 | // condition here in multi-threaded code. See |
---|
945 | // http://thread.gmane.org/gmane.comp.lib.boost.devel/164902/. |
---|
946 | static vtable_type stored_vtable = |
---|
947 | { { &manager_type::manage }, &invoker_type::invoke }; |
---|
948 | |
---|
949 | if (stored_vtable.assign_to_a(f, functor, a)) { |
---|
950 | std::size_t value = reinterpret_cast<std::size_t>(&stored_vtable.base); |
---|
951 | if (boost::has_trivial_copy_constructor<Functor>::value && |
---|
952 | boost::has_trivial_destructor<Functor>::value && |
---|
953 | detail::function::function_allows_small_object_optimization<Functor>::value) |
---|
954 | value |= (std::size_t)0x01; |
---|
955 | vtable = reinterpret_cast<detail::function::vtable_base *>(value); |
---|
956 | } else |
---|
957 | vtable = 0; |
---|
958 | } |
---|
959 | |
---|
960 | // Moves the value from the specified argument to *this. If the argument |
---|
961 | // has its function object allocated on the heap, move_assign will pass |
---|
962 | // its buffer to *this, and set the argument's buffer pointer to NULL. |
---|
963 | void move_assign(BOOST_FUNCTION_FUNCTION& f) |
---|
964 | { |
---|
965 | if (&f == this) |
---|
966 | return; |
---|
967 | |
---|
968 | BOOST_TRY { |
---|
969 | if (!f.empty()) { |
---|
970 | this->vtable = f.vtable; |
---|
971 | if (this->has_trivial_copy_and_destroy()) |
---|
972 | this->functor = f.functor; |
---|
973 | else |
---|
974 | get_vtable()->base.manager(f.functor, this->functor, |
---|
975 | boost::detail::function::move_functor_tag); |
---|
976 | f.vtable = 0; |
---|
977 | } else { |
---|
978 | clear(); |
---|
979 | } |
---|
980 | } BOOST_CATCH (...) { |
---|
981 | vtable = 0; |
---|
982 | BOOST_RETHROW; |
---|
983 | } |
---|
984 | BOOST_CATCH_END |
---|
985 | } |
---|
986 | }; |
---|
987 | |
---|
988 | template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
---|
989 | inline void swap(BOOST_FUNCTION_FUNCTION< |
---|
990 | R BOOST_FUNCTION_COMMA |
---|
991 | BOOST_FUNCTION_TEMPLATE_ARGS |
---|
992 | >& f1, |
---|
993 | BOOST_FUNCTION_FUNCTION< |
---|
994 | R BOOST_FUNCTION_COMMA |
---|
995 | BOOST_FUNCTION_TEMPLATE_ARGS |
---|
996 | >& f2) |
---|
997 | { |
---|
998 | f1.swap(f2); |
---|
999 | } |
---|
1000 | |
---|
1001 | #if !BOOST_WORKAROUND(BOOST_MSVC, < 1300) |
---|
1002 | template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
---|
1003 | typename BOOST_FUNCTION_FUNCTION< |
---|
1004 | R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS>::result_type |
---|
1005 | inline |
---|
1006 | BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS> |
---|
1007 | ::operator()(BOOST_FUNCTION_PARMS) const |
---|
1008 | { |
---|
1009 | if (this->empty()) |
---|
1010 | boost::throw_exception(bad_function_call()); |
---|
1011 | |
---|
1012 | return get_vtable()->invoker |
---|
1013 | (this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS); |
---|
1014 | } |
---|
1015 | #endif |
---|
1016 | |
---|
1017 | // Poison comparisons between boost::function objects of the same type. |
---|
1018 | template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
---|
1019 | void operator==(const BOOST_FUNCTION_FUNCTION< |
---|
1020 | R BOOST_FUNCTION_COMMA |
---|
1021 | BOOST_FUNCTION_TEMPLATE_ARGS>&, |
---|
1022 | const BOOST_FUNCTION_FUNCTION< |
---|
1023 | R BOOST_FUNCTION_COMMA |
---|
1024 | BOOST_FUNCTION_TEMPLATE_ARGS>&); |
---|
1025 | template<typename R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_PARMS> |
---|
1026 | void operator!=(const BOOST_FUNCTION_FUNCTION< |
---|
1027 | R BOOST_FUNCTION_COMMA |
---|
1028 | BOOST_FUNCTION_TEMPLATE_ARGS>&, |
---|
1029 | const BOOST_FUNCTION_FUNCTION< |
---|
1030 | R BOOST_FUNCTION_COMMA |
---|
1031 | BOOST_FUNCTION_TEMPLATE_ARGS>& ); |
---|
1032 | |
---|
1033 | #if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX) |
---|
1034 | |
---|
1035 | #if BOOST_FUNCTION_NUM_ARGS == 0 |
---|
1036 | #define BOOST_FUNCTION_PARTIAL_SPEC R (void) |
---|
1037 | #else |
---|
1038 | #define BOOST_FUNCTION_PARTIAL_SPEC R (BOOST_PP_ENUM_PARAMS(BOOST_FUNCTION_NUM_ARGS,T)) |
---|
1039 | #endif |
---|
1040 | |
---|
1041 | template<typename R BOOST_FUNCTION_COMMA |
---|
1042 | BOOST_FUNCTION_TEMPLATE_PARMS> |
---|
1043 | class function<BOOST_FUNCTION_PARTIAL_SPEC> |
---|
1044 | : public BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS> |
---|
1045 | { |
---|
1046 | typedef BOOST_FUNCTION_FUNCTION<R BOOST_FUNCTION_COMMA BOOST_FUNCTION_TEMPLATE_ARGS> base_type; |
---|
1047 | typedef function self_type; |
---|
1048 | |
---|
1049 | struct clear_type {}; |
---|
1050 | |
---|
1051 | public: |
---|
1052 | |
---|
1053 | function() : base_type() {} |
---|
1054 | |
---|
1055 | template<typename Functor> |
---|
1056 | function(Functor f |
---|
1057 | #ifndef BOOST_NO_SFINAE |
---|
1058 | ,typename enable_if_c< |
---|
1059 | (boost::type_traits::ice_not< |
---|
1060 | (is_integral<Functor>::value)>::value), |
---|
1061 | int>::type = 0 |
---|
1062 | #endif |
---|
1063 | ) : |
---|
1064 | base_type(f) |
---|
1065 | { |
---|
1066 | } |
---|
1067 | template<typename Functor,typename Allocator> |
---|
1068 | function(Functor f, Allocator a |
---|
1069 | #ifndef BOOST_NO_SFINAE |
---|
1070 | ,typename enable_if_c< |
---|
1071 | (boost::type_traits::ice_not< |
---|
1072 | (is_integral<Functor>::value)>::value), |
---|
1073 | int>::type = 0 |
---|
1074 | #endif |
---|
1075 | ) : |
---|
1076 | base_type(f,a) |
---|
1077 | { |
---|
1078 | } |
---|
1079 | |
---|
1080 | #ifndef BOOST_NO_SFINAE |
---|
1081 | function(clear_type*) : base_type() {} |
---|
1082 | #endif |
---|
1083 | |
---|
1084 | function(const self_type& f) : base_type(static_cast<const base_type&>(f)){} |
---|
1085 | |
---|
1086 | function(const base_type& f) : base_type(static_cast<const base_type&>(f)){} |
---|
1087 | |
---|
1088 | self_type& operator=(const self_type& f) |
---|
1089 | { |
---|
1090 | self_type(f).swap(*this); |
---|
1091 | return *this; |
---|
1092 | } |
---|
1093 | |
---|
1094 | template<typename Functor> |
---|
1095 | #ifndef BOOST_NO_SFINAE |
---|
1096 | typename enable_if_c< |
---|
1097 | (boost::type_traits::ice_not< |
---|
1098 | (is_integral<Functor>::value)>::value), |
---|
1099 | self_type&>::type |
---|
1100 | #else |
---|
1101 | self_type& |
---|
1102 | #endif |
---|
1103 | operator=(Functor f) |
---|
1104 | { |
---|
1105 | self_type(f).swap(*this); |
---|
1106 | return *this; |
---|
1107 | } |
---|
1108 | |
---|
1109 | #ifndef BOOST_NO_SFINAE |
---|
1110 | self_type& operator=(clear_type*) |
---|
1111 | { |
---|
1112 | this->clear(); |
---|
1113 | return *this; |
---|
1114 | } |
---|
1115 | #endif |
---|
1116 | |
---|
1117 | self_type& operator=(const base_type& f) |
---|
1118 | { |
---|
1119 | self_type(f).swap(*this); |
---|
1120 | return *this; |
---|
1121 | } |
---|
1122 | }; |
---|
1123 | |
---|
1124 | #undef BOOST_FUNCTION_PARTIAL_SPEC |
---|
1125 | #endif // have partial specialization |
---|
1126 | |
---|
1127 | } // end namespace boost |
---|
1128 | |
---|
1129 | // Cleanup after ourselves... |
---|
1130 | #undef BOOST_FUNCTION_VTABLE |
---|
1131 | #undef BOOST_FUNCTION_COMMA |
---|
1132 | #undef BOOST_FUNCTION_FUNCTION |
---|
1133 | #undef BOOST_FUNCTION_FUNCTION_INVOKER |
---|
1134 | #undef BOOST_FUNCTION_VOID_FUNCTION_INVOKER |
---|
1135 | #undef BOOST_FUNCTION_FUNCTION_OBJ_INVOKER |
---|
1136 | #undef BOOST_FUNCTION_VOID_FUNCTION_OBJ_INVOKER |
---|
1137 | #undef BOOST_FUNCTION_FUNCTION_REF_INVOKER |
---|
1138 | #undef BOOST_FUNCTION_VOID_FUNCTION_REF_INVOKER |
---|
1139 | #undef BOOST_FUNCTION_MEMBER_INVOKER |
---|
1140 | #undef BOOST_FUNCTION_VOID_MEMBER_INVOKER |
---|
1141 | #undef BOOST_FUNCTION_GET_FUNCTION_INVOKER |
---|
1142 | #undef BOOST_FUNCTION_GET_FUNCTION_OBJ_INVOKER |
---|
1143 | #undef BOOST_FUNCTION_GET_FUNCTION_REF_INVOKER |
---|
1144 | #undef BOOST_FUNCTION_GET_MEM_FUNCTION_INVOKER |
---|
1145 | #undef BOOST_FUNCTION_GET_INVOKER |
---|
1146 | #undef BOOST_FUNCTION_TEMPLATE_PARMS |
---|
1147 | #undef BOOST_FUNCTION_TEMPLATE_ARGS |
---|
1148 | #undef BOOST_FUNCTION_PARMS |
---|
1149 | #undef BOOST_FUNCTION_PARM |
---|
1150 | #undef BOOST_FUNCTION_ARGS |
---|
1151 | #undef BOOST_FUNCTION_ARG_TYPE |
---|
1152 | #undef BOOST_FUNCTION_ARG_TYPES |
---|
1153 | #undef BOOST_FUNCTION_VOID_RETURN_TYPE |
---|
1154 | #undef BOOST_FUNCTION_RETURN |
---|
1155 | |
---|
1156 | #if defined(BOOST_MSVC) |
---|
1157 | # pragma warning( pop ) |
---|
1158 | #endif |
---|