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2
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3 // Copyright (c) 1999-2004 by Digital Mars
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4 // All Rights Reserved
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5 // written by Walter Bright
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6 // www.digitalmars.com
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7 // License for redistribution is by either the Artistic License
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8 // in artistic.txt, or the GNU General Public License in gnu.txt.
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9 // See the included readme.txt for details.
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10
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11 #include <cstdio>
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12 #include <cassert>
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13
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14 #include "mars.h"
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15 #include "module.h"
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16 #include "mtype.h"
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17 #include "scope.h"
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18 #include "init.h"
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19 #include "expression.h"
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20 #include "attrib.h"
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21 #include "declaration.h"
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22 #include "template.h"
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23 #include "id.h"
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24 #include "enum.h"
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25 #include "import.h"
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26 #include "aggregate.h"
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27
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28 #include "logger.h"
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29
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30 /*******************************************
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31
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32 * Get a canonicalized form of the TypeInfo for use with the internal
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33
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34 * runtime library routines. Canonicalized in that static arrays are
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35
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36 * represented as dynamic arrays, enums are represented by their
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37
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38 * underlying type, etc. This reduces the number of TypeInfo's needed,
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39
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40 * so we can use the custom internal ones more.
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41
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42 */
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43
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44
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45
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46 Expression *Type::getInternalTypeInfo(Scope *sc)
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47
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48 { TypeInfoDeclaration *tid;
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49
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50 Expression *e;
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51
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52 Type *t;
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53
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54 static TypeInfoDeclaration *internalTI[TMAX];
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55
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56
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57
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58 //printf("Type::getInternalTypeInfo() %s\n", toChars());
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59
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60 t = toBasetype();
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61
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62 switch (t->ty)
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63
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64 {
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65
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66 case Tsarray:
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67
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68 t = t->next->arrayOf(); // convert to corresponding dynamic array type
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69
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70 break;
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71
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72
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73
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74 case Tclass:
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75
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76 if (((TypeClass *)t)->sym->isInterfaceDeclaration())
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77
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78 break;
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79
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80 goto Linternal;
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81
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82
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83
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84 case Tarray:
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85
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86 if (t->next->ty != Tclass)
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87
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88 break;
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89
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90 goto Linternal;
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91
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92
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93
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94 case Tfunction:
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95
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96 case Tdelegate:
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97
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98 case Tpointer:
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99
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100 Linternal:
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101
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102 tid = internalTI[t->ty];
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103
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104 if (!tid)
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105
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106 { tid = new TypeInfoDeclaration(t, 1);
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107
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108 internalTI[t->ty] = tid;
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109
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110 }
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111
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112 e = new VarExp(0, tid);
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113
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114 e = e->addressOf(sc);
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115
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116 e->type = tid->type; // do this so we don't get redundant dereference
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117
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118 return e;
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119
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120
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121
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122 default:
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123
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124 break;
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125
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126 }
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127
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128 //printf("\tcalling getTypeInfo() %s\n", t->toChars());
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129
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130 return t->getTypeInfo(sc);
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131
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132 }
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133
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134
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135
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136
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137
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138 /****************************************************
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139
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140 * Get the exact TypeInfo.
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141
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142 */
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143
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144
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145
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146 Expression *Type::getTypeInfo(Scope *sc)
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147
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148 {
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149
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150 Expression *e;
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151
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152 Type *t;
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153
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154
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155
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156 //printf("Type::getTypeInfo() %p, %s\n", this, toChars());
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157
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158 t = merge(); // do this since not all Type's are merge'd
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159
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160 if (!t->vtinfo)
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161
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162 { t->vtinfo = t->getTypeInfoDeclaration();
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163
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164 assert(t->vtinfo);
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165
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166
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167
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168 /* If this has a custom implementation in std/typeinfo, then
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169
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170 * do not generate a COMDAT for it.
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171
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172 */
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173
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174 if (!t->builtinTypeInfo())
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175
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176 { // Generate COMDAT
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177
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178 if (sc) // if in semantic() pass
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179
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180 { // Find module that will go all the way to an object file
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181
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182 Module *m = sc->module->importedFrom;
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183
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184 m->members->push(t->vtinfo);
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185
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186 }
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187
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188 else // if in obj generation pass
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189
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190 {
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191
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192 t->vtinfo->toObjFile();
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193
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194 }
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195
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196 }
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197
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198 }
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199
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200 e = new VarExp(0, t->vtinfo);
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201
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202 //e = e->addressOf(sc);
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203 e->type = t->vtinfo->type; // do this so we don't get redundant dereference
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204
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205 return e;
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206
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207 }
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208
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209
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210
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211 TypeInfoDeclaration *Type::getTypeInfoDeclaration()
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212
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213 {
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214
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215 //printf("Type::getTypeInfoDeclaration() %s\n", toChars());
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216
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217 return new TypeInfoDeclaration(this, 0);
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218
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219 }
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220
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221
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222
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223 TypeInfoDeclaration *TypeTypedef::getTypeInfoDeclaration()
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224
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225 {
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226
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227 return new TypeInfoTypedefDeclaration(this);
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228
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229 }
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230
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231
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232
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233 TypeInfoDeclaration *TypePointer::getTypeInfoDeclaration()
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234
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235 {
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236
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237 return new TypeInfoPointerDeclaration(this);
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238
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239 }
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240
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241
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242
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243 TypeInfoDeclaration *TypeDArray::getTypeInfoDeclaration()
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244
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245 {
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246
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247 return new TypeInfoArrayDeclaration(this);
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248
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249 }
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250
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251
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252
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253 TypeInfoDeclaration *TypeSArray::getTypeInfoDeclaration()
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254
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255 {
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256
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257 return new TypeInfoStaticArrayDeclaration(this);
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258
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259 }
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260
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261
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262
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263 TypeInfoDeclaration *TypeAArray::getTypeInfoDeclaration()
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264
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265 {
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266
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267 return new TypeInfoAssociativeArrayDeclaration(this);
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268
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269 }
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270
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271
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272
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273 TypeInfoDeclaration *TypeStruct::getTypeInfoDeclaration()
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274
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275 {
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276
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277 return new TypeInfoStructDeclaration(this);
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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
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283 TypeInfoDeclaration *TypeClass::getTypeInfoDeclaration()
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284
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285 {
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286
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287 if (sym->isInterfaceDeclaration())
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288
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289 return new TypeInfoInterfaceDeclaration(this);
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290
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291 else
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292
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293 return new TypeInfoClassDeclaration(this);
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294
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295 }
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296
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297
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298
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299 TypeInfoDeclaration *TypeEnum::getTypeInfoDeclaration()
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300
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301 {
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302
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303 return new TypeInfoEnumDeclaration(this);
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304
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305 }
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306
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307
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308
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309 TypeInfoDeclaration *TypeFunction::getTypeInfoDeclaration()
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310
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311 {
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312
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313 return new TypeInfoFunctionDeclaration(this);
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314
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315 }
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316 enum RET TypeFunction::retStyle()
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317
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318 {
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319
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320 return RETstack;
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321
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322 }
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323
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324
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325 TypeInfoDeclaration *TypeDelegate::getTypeInfoDeclaration()
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326
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327 {
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328
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329 return new TypeInfoDelegateDeclaration(this);
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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 TypeInfoDeclaration *TypeTuple::getTypeInfoDeclaration()
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336
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337 {
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338
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339 return new TypeInfoTupleDeclaration(this);
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340
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341 }
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342
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343
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344 void TypeInfoDeclaration::toDt(dt_t **pdt)
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345 {
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346 }
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347
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348 void TypeInfoTypedefDeclaration::toDt(dt_t **pdt)
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349 {
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350 }
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351
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352 void TypeInfoStructDeclaration::toDt(dt_t **pdt)
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353 {
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354 }
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355
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356 void TypeInfoClassDeclaration::toDt(dt_t **pdt)
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357 {
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358 }
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359
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360 void TypeInfoDeclaration::toObjFile()
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361 {
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362 Logger::println("TypeInfoDeclaration::toObjFile()");
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363 LOG_SCOPE;
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364 Logger::println("type = '%s'", tinfo->toChars());
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365
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366
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367 }
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368
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369 /* ========================================================================= */
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370
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371 /* These decide if there's an instance for them already in std.typeinfo,
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372 * because then the compiler doesn't need to build one.
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373 */
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374
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375 int Type::builtinTypeInfo()
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376 {
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377 return 0;
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378 }
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379
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380 int TypeBasic::builtinTypeInfo()
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381 {
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382 return 1;
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383 }
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384
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385 int TypeDArray::builtinTypeInfo()
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386 {
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387 return 0;
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388 }
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389
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390 /* ========================================================================= */
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391
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392 /***************************************
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393 * Create a static array of TypeInfo references
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394 * corresponding to an array of Expression's.
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395 * Used to supply hidden _arguments[] value for variadic D functions.
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396 */
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397
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398 Expression *createTypeInfoArray(Scope *sc, Expression *args[], int dim)
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399 {
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400 assert(0);
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401 return 0;
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402 }
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403
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