1 | /* -*- c++ -*- |
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2 | |
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3 | This file is part of the dpp library of C++ template classes |
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4 | |
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5 | doc: http://diaxen.ssji.net/dpp/index.html |
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6 | repo: https://www.ssji.net/svn/projets/trunk/libdpp |
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7 | |
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8 | This program is free software: you can redistribute it and/or |
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9 | modify it under the terms of the GNU Lesser General Public License |
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10 | as published by the Free Software Foundation, either version 3 of |
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11 | the License, or (at your option) any later version. |
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12 | |
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13 | This program is distributed in the hope that it will be useful, but |
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14 | WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | Lesser General Public License for more details. |
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17 | |
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18 | You should have received a copy of the GNU Lesser General Public |
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19 | License along with this program. If not, see |
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20 | <http://www.gnu.org/licenses/>. |
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21 | |
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22 | (c) 2012 Alexandre Becoulet <alexandre.becoulet@free.fr> |
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23 | |
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24 | Some parts of this file were generated using tools/template_switch.pl |
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25 | |
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26 | */ |
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27 | |
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28 | #ifndef DPP_TEMPLATE_SWITCH_HH_ |
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29 | #define DPP_TEMPLATE_SWITCH_HH_ |
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30 | |
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31 | /** @file @module {Template switch} */ |
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32 | |
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33 | namespace dpp { |
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34 | |
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35 | /** |
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36 | @module {Template switch} |
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37 | @header dpp/template_switch |
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38 | |
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39 | @This declares a class designed to hold an array of function |
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40 | pointers for multiple instances of the same template function |
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41 | but with different values of its enum template parameter. |
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42 | |
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43 | The class constructor fill the array with function pointers for |
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44 | all enum values between 0 and @tt C0. The function pointer can |
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45 | later be retrieved using the @tt {()} operator on the template |
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46 | switch object. |
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47 | |
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48 | Other classes exists which hold multidimensional array to deal |
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49 | with multiple enum template parameters. |
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50 | |
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51 | @section {Examples} |
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52 | Use of template switch with global function and 1 enum parameter: |
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53 | @example test/test_template_switch.cc:example|example1 |
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54 | |
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55 | Use of template switch with member function and 2 enum parameters: |
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56 | @example test/test_template_switch.cc:example|example2 |
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57 | @end section |
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58 | */ |
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59 | #define DPP_TEMPLATE_SWITCH_1(clname, func_type, func, C0) \ |
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60 | class clname \ |
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61 | { \ |
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62 | typedef typeof(C0) e0; \ |
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63 | \ |
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64 | typedef func_type table_type[C0+1]; \ |
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65 | table_type _t; \ |
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66 | \ |
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67 | template <int I0, bool done> \ |
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68 | struct iter; \ |
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69 | \ |
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70 | template <int I0> \ |
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71 | struct iter<I0, true> \ |
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72 | { \ |
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73 | static void s(table_type &t) \ |
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74 | { \ |
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75 | } \ |
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76 | }; \ |
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77 | \ |
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78 | template <int I0, bool done> \ |
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79 | struct iter \ |
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80 | { \ |
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81 | static void s(table_type &t) \ |
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82 | { \ |
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83 | t[I0] = &func<(e0)I0>; \ |
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84 | iter<2*I0+1, (2*I0+1 >= C0+1)>::s(t); \ |
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85 | iter<2*I0+2, (2*I0+2 >= C0+1)>::s(t); \ |
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86 | } \ |
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87 | }; \ |
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88 | \ |
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89 | public: \ |
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90 | \ |
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91 | clname() \ |
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92 | { \ |
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93 | iter<0, false>::s(_t); \ |
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94 | } \ |
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95 | \ |
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96 | const func_type operator() (e0 p0) const \ |
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97 | { \ |
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98 | return _t[p0]; \ |
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99 | } \ |
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100 | } |
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101 | |
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102 | /** |
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103 | @module {Template switch} |
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104 | @header dpp/template_switch |
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105 | @see #DPP_TEMPLATE_SWITCH_1 |
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106 | */ |
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107 | #define DPP_TEMPLATE_SWITCH_2(clname, func_type, func, C0, C1) \ |
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108 | class clname \ |
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109 | { \ |
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110 | typedef typeof(C0) e0; \ |
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111 | typedef typeof(C1) e1; \ |
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112 | \ |
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113 | typedef func_type table_type[C0+1][C1+1]; \ |
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114 | table_type _t; \ |
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115 | \ |
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116 | template <int I0, int I1, bool done> \ |
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117 | struct iter; \ |
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118 | \ |
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119 | template <int I0, int I1> \ |
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120 | struct iter<I0, I1, true> \ |
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121 | { \ |
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122 | static void s(table_type &t) \ |
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123 | { \ |
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124 | } \ |
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125 | }; \ |
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126 | \ |
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127 | template <int I0, int I1, bool done> \ |
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128 | struct iter \ |
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129 | { \ |
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130 | static void s(table_type &t) \ |
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131 | { \ |
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132 | t[I0][I1] = &func<(e0)I0, (e1)I1>; \ |
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133 | iter<2*I0+1, I1, (2*I0+1 >= C0+1)>::s(t); \ |
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134 | iter<2*I0+2, I1, (2*I0+2 >= C0+1)>::s(t); \ |
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135 | if (2*I0+1 == C0+1 || 2*I0+2 == C0+1) { \ |
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136 | iter<0, 2*I1+1, (2*I1+1 >= C1+1)>::s(t); \ |
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137 | iter<0, 2*I1+2, (2*I1+2 >= C1+1)>::s(t); \ |
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138 | } \ |
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139 | } \ |
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140 | }; \ |
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141 | \ |
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142 | public: \ |
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143 | \ |
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144 | clname() \ |
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145 | { \ |
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146 | iter<0, 0, false>::s(_t); \ |
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147 | } \ |
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148 | \ |
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149 | const func_type operator() (e0 p0, e1 p1) const \ |
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150 | { \ |
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151 | return _t[p0][p1]; \ |
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152 | } \ |
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153 | } |
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154 | |
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155 | |
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156 | /** |
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157 | @module {Template switch} |
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158 | @header dpp/template_switch |
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159 | @see #DPP_TEMPLATE_SWITCH_1 |
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160 | */ |
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161 | #define DPP_TEMPLATE_SWITCH_3(clname, func_type, func, \ |
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162 | C0, C1, C2) \ |
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163 | class clname \ |
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164 | { \ |
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165 | typedef typeof(C0) e0; \ |
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166 | typedef typeof(C1) e1; \ |
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167 | typedef typeof(C2) e2; \ |
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168 | \ |
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169 | typedef func_type table_type[C0+1][C1+1][C2+1]; \ |
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170 | table_type _t; \ |
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171 | \ |
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172 | template <int I0, int I1, int I2, bool done> \ |
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173 | struct iter; \ |
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174 | \ |
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175 | template <int I0, int I1, int I2> \ |
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176 | struct iter<I0, I1, I2, true> \ |
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177 | { \ |
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178 | static void s(table_type &t) \ |
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179 | { \ |
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180 | } \ |
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181 | }; \ |
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182 | \ |
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183 | template <int I0, int I1, int I2, bool done> \ |
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184 | struct iter \ |
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185 | { \ |
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186 | static void s(table_type &t) \ |
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187 | { \ |
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188 | t[I0][I1][I2] = &func<(e0)I0, (e1)I1, (e2)I2>; \ |
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189 | iter<2*I0+1, I1, I2, (2*I0+1 >= C0+1)>::s(t); \ |
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190 | iter<2*I0+2, I1, I2, (2*I0+2 >= C0+1)>::s(t); \ |
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191 | if (2*I0+1 == C0+1 || 2*I0+2 == C0+1) { \ |
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192 | iter<0, 2*I1+1, I2, (2*I1+1 >= C1+1)>::s(t); \ |
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193 | iter<0, 2*I1+2, I2, (2*I1+2 >= C1+1)>::s(t); \ |
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194 | if (2*I1+1 == C1+1 || 2*I1+2 == C1+1) { \ |
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195 | iter<0, 0, 2*I2+1, (2*I2+1 >= C2+1)>::s(t); \ |
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196 | iter<0, 0, 2*I2+2, (2*I2+2 >= C2+1)>::s(t); \ |
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197 | } \ |
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198 | } \ |
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199 | } \ |
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200 | }; \ |
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201 | \ |
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202 | public: \ |
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203 | \ |
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204 | clname() \ |
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205 | { \ |
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206 | iter<0, 0, 0, false>::s(_t); \ |
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207 | } \ |
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208 | \ |
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209 | const func_type operator() (e0 p0, e1 p1, e2 p2) const \ |
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210 | { \ |
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211 | return _t[p0][p1][p2]; \ |
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212 | } \ |
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213 | } |
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214 | |
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215 | |
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216 | /** |
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217 | @module {Template switch} |
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218 | @header dpp/template_switch |
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219 | @see #DPP_TEMPLATE_SWITCH_1 |
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220 | */ |
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221 | #define DPP_TEMPLATE_SWITCH_4(clname, func_type, func, \ |
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222 | C0, C1, C2, C3) \ |
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223 | class clname \ |
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224 | { \ |
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225 | typedef typeof(C0) e0; \ |
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226 | typedef typeof(C1) e1; \ |
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227 | typedef typeof(C2) e2; \ |
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228 | typedef typeof(C3) e3; \ |
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229 | \ |
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230 | typedef func_type table_type[C0+1][C1+1][C2+1][C3+1]; \ |
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231 | table_type _t; \ |
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232 | \ |
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233 | template <int I0, int I1, int I2, int I3, bool done> \ |
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234 | struct iter; \ |
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235 | \ |
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236 | template <int I0, int I1, int I2, int I3> \ |
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237 | struct iter<I0, I1, I2, I3, true> \ |
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238 | { \ |
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239 | static void s(table_type &t) \ |
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240 | { \ |
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241 | } \ |
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242 | }; \ |
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243 | \ |
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244 | template <int I0, int I1, int I2, int I3, bool done> \ |
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245 | struct iter \ |
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246 | { \ |
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247 | static void s(table_type &t) \ |
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248 | { \ |
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249 | t[I0][I1][I2][I3] = &func<(e0)I0, (e1)I1, (e2)I2, (e3)I3>; \ |
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250 | iter<2*I0+1, I1, I2, I3, (2*I0+1 >= C0+1)>::s(t); \ |
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251 | iter<2*I0+2, I1, I2, I3, (2*I0+2 >= C0+1)>::s(t); \ |
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252 | if (2*I0+1 == C0+1 || 2*I0+2 == C0+1) { \ |
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253 | iter<0, 2*I1+1, I2, I3, (2*I1+1 >= C1+1)>::s(t); \ |
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254 | iter<0, 2*I1+2, I2, I3, (2*I1+2 >= C1+1)>::s(t); \ |
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255 | if (2*I1+1 == C1+1 || 2*I1+2 == C1+1) { \ |
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256 | iter<0, 0, 2*I2+1, I3, (2*I2+1 >= C2+1)>::s(t); \ |
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257 | iter<0, 0, 2*I2+2, I3, (2*I2+2 >= C2+1)>::s(t); \ |
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258 | if (2*I2+1 == C2+1 || 2*I2+2 == C2+1) { \ |
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259 | iter<0, 0, 0, 2*I3+1, (2*I3+1 >= C3+1)>::s(t); \ |
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260 | iter<0, 0, 0, 2*I3+2, (2*I3+2 >= C3+1)>::s(t); \ |
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261 | } \ |
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262 | } \ |
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263 | } \ |
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264 | } \ |
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265 | }; \ |
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266 | \ |
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267 | public: \ |
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268 | \ |
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269 | clname() \ |
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270 | { \ |
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271 | iter<0, 0, 0, 0, false>::s(_t); \ |
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272 | } \ |
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273 | \ |
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274 | const func_type operator() (e0 p0, e1 p1, e2 p2, e3 p3) const \ |
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275 | { \ |
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276 | return _t[p0][p1][p2][p3]; \ |
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277 | } \ |
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278 | } |
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279 | |
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280 | |
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281 | /** |
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282 | @module {Template switch} |
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283 | @header dpp/template_switch |
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284 | @see #DPP_TEMPLATE_SWITCH_1 |
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285 | */ |
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286 | #define DPP_TEMPLATE_SWITCH_5(clname, func_type, func, \ |
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287 | C0, C1, C2, C3, C4) \ |
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288 | class clname \ |
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289 | { \ |
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290 | typedef typeof(C0) e0; \ |
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291 | typedef typeof(C1) e1; \ |
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292 | typedef typeof(C2) e2; \ |
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293 | typedef typeof(C3) e3; \ |
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294 | typedef typeof(C4) e4; \ |
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295 | \ |
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296 | typedef func_type table_type[C0+1][C1+1][C2+1][C3+1][C4+1]; \ |
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297 | table_type _t; \ |
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298 | \ |
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299 | template <int I0, int I1, int I2, int I3, int I4, bool done> \ |
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300 | struct iter; \ |
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301 | \ |
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302 | template <int I0, int I1, int I2, int I3, int I4> \ |
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303 | struct iter<I0, I1, I2, I3, I4, true> \ |
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304 | { \ |
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305 | static void s(table_type &t) \ |
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306 | { \ |
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307 | } \ |
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308 | }; \ |
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309 | \ |
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310 | template <int I0, int I1, int I2, int I3, int I4, bool done> \ |
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311 | struct iter \ |
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312 | { \ |
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313 | static void s(table_type &t) \ |
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314 | { \ |
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315 | t[I0][I1][I2][I3][I4] = &func<(e0)I0, (e1)I1, (e2)I2, (e3)I3, (e4)I4>; \ |
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316 | iter<2*I0+1, I1, I2, I3, I4, (2*I0+1 >= C0+1)>::s(t); \ |
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317 | iter<2*I0+2, I1, I2, I3, I4, (2*I0+2 >= C0+1)>::s(t); \ |
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318 | if (2*I0+1 == C0+1 || 2*I0+2 == C0+1) { \ |
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319 | iter<0, 2*I1+1, I2, I3, I4, (2*I1+1 >= C1+1)>::s(t); \ |
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320 | iter<0, 2*I1+2, I2, I3, I4, (2*I1+2 >= C1+1)>::s(t); \ |
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321 | if (2*I1+1 == C1+1 || 2*I1+2 == C1+1) { \ |
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322 | iter<0, 0, 2*I2+1, I3, I4, (2*I2+1 >= C2+1)>::s(t); \ |
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323 | iter<0, 0, 2*I2+2, I3, I4, (2*I2+2 >= C2+1)>::s(t); \ |
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324 | if (2*I2+1 == C2+1 || 2*I2+2 == C2+1) { \ |
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325 | iter<0, 0, 0, 2*I3+1, I4, (2*I3+1 >= C3+1)>::s(t); \ |
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326 | iter<0, 0, 0, 2*I3+2, I4, (2*I3+2 >= C3+1)>::s(t); \ |
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327 | if (2*I3+1 == C3+1 || 2*I3+2 == C3+1) { \ |
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328 | iter<0, 0, 0, 0, 2*I4+1, (2*I4+1 >= C4+1)>::s(t); \ |
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329 | iter<0, 0, 0, 0, 2*I4+2, (2*I4+2 >= C4+1)>::s(t); \ |
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330 | } \ |
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331 | } \ |
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332 | } \ |
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333 | } \ |
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334 | } \ |
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335 | }; \ |
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336 | \ |
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337 | public: \ |
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338 | \ |
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339 | clname() \ |
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340 | { \ |
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341 | iter<0, 0, 0, 0, 0, false>::s(_t); \ |
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342 | } \ |
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343 | \ |
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344 | const func_type operator() (e0 p0, e1 p1, e2 p2, e3 p3, e4 p4) const \ |
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345 | { \ |
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346 | return _t[p0][p1][p2][p3][p4]; \ |
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347 | } \ |
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348 | } |
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349 | |
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350 | |
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351 | /** |
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352 | @module {Template switch} |
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353 | @header dpp/template_switch |
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354 | @see #DPP_TEMPLATE_SWITCH_1 |
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355 | */ |
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356 | #define DPP_TEMPLATE_SWITCH_6(clname, func_type, func, \ |
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357 | C0, C1, C2, C3, C4, C5) \ |
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358 | class clname \ |
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359 | { \ |
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360 | typedef typeof(C0) e0; \ |
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361 | typedef typeof(C1) e1; \ |
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362 | typedef typeof(C2) e2; \ |
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363 | typedef typeof(C3) e3; \ |
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364 | typedef typeof(C4) e4; \ |
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365 | typedef typeof(C5) e5; \ |
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366 | \ |
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367 | typedef func_type table_type[C0+1][C1+1][C2+1][C3+1][C4+1][C5+1]; \ |
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368 | table_type _t; \ |
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369 | \ |
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370 | template <int I0, int I1, int I2, int I3, int I4, int I5, bool done> \ |
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371 | struct iter; \ |
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372 | \ |
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373 | template <int I0, int I1, int I2, int I3, int I4, int I5> \ |
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374 | struct iter<I0, I1, I2, I3, I4, I5, true> \ |
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375 | { \ |
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376 | static void s(table_type &t) \ |
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377 | { \ |
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378 | } \ |
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379 | }; \ |
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380 | \ |
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381 | template <int I0, int I1, int I2, int I3, int I4, int I5, bool done> \ |
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382 | struct iter \ |
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383 | { \ |
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384 | static void s(table_type &t) \ |
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385 | { \ |
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386 | t[I0][I1][I2][I3][I4][I5] = &func<(e0)I0, (e1)I1, (e2)I2, (e3)I3, (e4)I4, (e5)I5>; \ |
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387 | iter<2*I0+1, I1, I2, I3, I4, I5, (2*I0+1 >= C0+1)>::s(t); \ |
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388 | iter<2*I0+2, I1, I2, I3, I4, I5, (2*I0+2 >= C0+1)>::s(t); \ |
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389 | if (2*I0+1 == C0+1 || 2*I0+2 == C0+1) { \ |
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390 | iter<0, 2*I1+1, I2, I3, I4, I5, (2*I1+1 >= C1+1)>::s(t); \ |
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391 | iter<0, 2*I1+2, I2, I3, I4, I5, (2*I1+2 >= C1+1)>::s(t); \ |
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392 | if (2*I1+1 == C1+1 || 2*I1+2 == C1+1) { \ |
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393 | iter<0, 0, 2*I2+1, I3, I4, I5, (2*I2+1 >= C2+1)>::s(t); \ |
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394 | iter<0, 0, 2*I2+2, I3, I4, I5, (2*I2+2 >= C2+1)>::s(t); \ |
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395 | if (2*I2+1 == C2+1 || 2*I2+2 == C2+1) { \ |
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396 | iter<0, 0, 0, 2*I3+1, I4, I5, (2*I3+1 >= C3+1)>::s(t); \ |
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397 | iter<0, 0, 0, 2*I3+2, I4, I5, (2*I3+2 >= C3+1)>::s(t); \ |
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398 | if (2*I3+1 == C3+1 || 2*I3+2 == C3+1) { \ |
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399 | iter<0, 0, 0, 0, 2*I4+1, I5, (2*I4+1 >= C4+1)>::s(t); \ |
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400 | iter<0, 0, 0, 0, 2*I4+2, I5, (2*I4+2 >= C4+1)>::s(t); \ |
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401 | if (2*I4+1 == C4+1 || 2*I4+2 == C4+1) { \ |
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402 | iter<0, 0, 0, 0, 0, 2*I5+1, (2*I5+1 >= C5+1)>::s(t); \ |
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403 | iter<0, 0, 0, 0, 0, 2*I5+2, (2*I5+2 >= C5+1)>::s(t); \ |
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404 | } \ |
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405 | } \ |
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406 | } \ |
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407 | } \ |
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408 | } \ |
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409 | } \ |
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410 | }; \ |
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411 | \ |
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412 | public: \ |
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413 | \ |
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414 | clname() \ |
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415 | { \ |
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416 | iter<0, 0, 0, 0, 0, 0, false>::s(_t); \ |
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417 | } \ |
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418 | \ |
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419 | const func_type operator() (e0 p0, e1 p1, e2 p2, e3 p3, e4 p4, e5 p5) const \ |
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420 | { \ |
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421 | return _t[p0][p1][p2][p3][p4][p5]; \ |
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422 | } \ |
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423 | } |
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424 | |
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425 | } |
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426 | |
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427 | #endif |
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428 | |
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