Mercurial > projects > ldc
annotate dmd2/struct.c @ 928:1b10a9c6e3e8
Added X86-64 version. Needed significant changes.
author | wilsonk@ubuntu |
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date | Tue, 03 Feb 2009 12:35:00 -0700 |
parents | 356e65836fb5 |
children | de97188378bc |
rev | line source |
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1 |
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2 // Compiler implementation of the D programming language |
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3 // Copyright (c) 1999-2008 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 // http://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 <stdio.h> |
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12 #include <assert.h> |
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13 |
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14 #include "root.h" |
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15 #include "aggregate.h" |
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16 #include "scope.h" |
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17 #include "mtype.h" |
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18 #include "declaration.h" |
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19 #include "module.h" |
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20 #include "id.h" |
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21 #include "statement.h" |
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22 |
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23 /********************************* AggregateDeclaration ****************************/ |
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24 |
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25 AggregateDeclaration::AggregateDeclaration(Loc loc, Identifier *id) |
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26 : ScopeDsymbol(id) |
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27 { |
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28 this->loc = loc; |
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29 |
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30 storage_class = 0; |
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31 protection = PROTpublic; |
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32 type = NULL; |
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33 handle = NULL; |
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34 structsize = 0; // size of struct |
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35 alignsize = 0; // size of struct for alignment purposes |
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36 structalign = 0; // struct member alignment in effect |
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37 hasUnions = 0; |
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38 sizeok = 0; // size not determined yet |
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39 isdeprecated = 0; |
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40 inv = NULL; |
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41 aggNew = NULL; |
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42 aggDelete = NULL; |
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43 |
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44 stag = NULL; |
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45 sinit = NULL; |
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46 scope = NULL; |
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47 dtor = NULL; |
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48 |
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49 ctor = NULL; |
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50 defaultCtor = NULL; |
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51 } |
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52 |
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53 enum PROT AggregateDeclaration::prot() |
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54 { |
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55 return protection; |
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56 } |
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57 |
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58 void AggregateDeclaration::semantic2(Scope *sc) |
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59 { |
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60 //printf("AggregateDeclaration::semantic2(%s)\n", toChars()); |
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61 if (scope) |
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62 { error("has forward references"); |
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63 return; |
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64 } |
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65 if (members) |
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66 { |
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67 sc = sc->push(this); |
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68 for (size_t i = 0; i < members->dim; i++) |
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69 { |
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70 Dsymbol *s = (Dsymbol *)members->data[i]; |
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71 s->semantic2(sc); |
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72 } |
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73 sc->pop(); |
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74 } |
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75 } |
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76 |
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77 void AggregateDeclaration::semantic3(Scope *sc) |
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78 { int i; |
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79 |
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80 //printf("AggregateDeclaration::semantic3(%s)\n", toChars()); |
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81 if (members) |
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82 { |
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83 sc = sc->push(this); |
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84 for (i = 0; i < members->dim; i++) |
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85 { |
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86 Dsymbol *s = (Dsymbol *)members->data[i]; |
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87 s->semantic3(sc); |
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88 } |
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89 sc->pop(); |
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90 } |
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91 } |
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92 |
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93 void AggregateDeclaration::inlineScan() |
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94 { int i; |
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95 |
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96 //printf("AggregateDeclaration::inlineScan(%s)\n", toChars()); |
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97 if (members) |
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98 { |
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99 for (i = 0; i < members->dim; i++) |
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100 { |
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101 Dsymbol *s = (Dsymbol *)members->data[i]; |
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102 //printf("inline scan aggregate symbol '%s'\n", s->toChars()); |
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103 s->inlineScan(); |
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104 } |
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105 } |
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106 } |
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107 |
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108 unsigned AggregateDeclaration::size(Loc loc) |
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109 { |
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110 //printf("AggregateDeclaration::size() = %d\n", structsize); |
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111 if (!members) |
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112 error(loc, "unknown size"); |
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113 if (sizeok != 1) |
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114 { error(loc, "no size yet for forward reference"); |
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115 //*(char*)0=0; |
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116 } |
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117 return structsize; |
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118 } |
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119 |
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120 Type *AggregateDeclaration::getType() |
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121 { |
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122 return type; |
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123 } |
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124 |
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125 int AggregateDeclaration::isDeprecated() |
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126 { |
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127 return isdeprecated; |
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128 } |
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129 |
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130 /**************************** |
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131 * Do byte or word alignment as necessary. |
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132 * Align sizes of 0, as we may not know array sizes yet. |
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133 */ |
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134 |
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135 void AggregateDeclaration::alignmember(unsigned salign, unsigned size, unsigned *poffset) |
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136 { |
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137 //printf("salign = %d, size = %d, offset = %d\n",salign,size,offset); |
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138 if (salign > 1) |
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139 { int sa; |
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140 |
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141 switch (size) |
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142 { case 1: |
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143 break; |
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144 case 2: |
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145 case_2: |
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146 *poffset = (*poffset + 1) & ~1; // align to word |
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147 break; |
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148 case 3: |
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149 case 4: |
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150 if (salign == 2) |
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151 goto case_2; |
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152 *poffset = (*poffset + 3) & ~3; // align to dword |
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153 break; |
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154 default: |
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155 *poffset = (*poffset + salign - 1) & ~(salign - 1); |
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156 break; |
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157 } |
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158 } |
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159 //printf("result = %d\n",offset); |
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160 } |
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161 |
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162 |
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163 void AggregateDeclaration::addField(Scope *sc, VarDeclaration *v) |
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164 { |
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165 unsigned memsize; // size of member |
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166 unsigned memalignsize; // size of member for alignment purposes |
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167 unsigned xalign; // alignment boundaries |
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168 |
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169 //printf("AggregateDeclaration::addField('%s') %s\n", v->toChars(), toChars()); |
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170 assert(!(v->storage_class & (STCstatic | STCextern | STCparameter | STCtls))); |
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171 |
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172 // Check for forward referenced types which will fail the size() call |
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173 Type *t = v->type->toBasetype(); |
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174 if (t->ty == Tstruct /*&& isStructDeclaration()*/) |
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175 { TypeStruct *ts = (TypeStruct *)t; |
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176 |
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177 if (ts->sym == this) |
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178 { |
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179 error("cannot have field %s with same struct type", v->toChars()); |
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180 } |
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181 |
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182 if (ts->sym->sizeok != 1) |
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183 { |
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184 sizeok = 2; // cannot finish; flag as forward referenced |
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185 return; |
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186 } |
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187 } |
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188 if (t->ty == Tident) |
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189 { |
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190 sizeok = 2; // cannot finish; flag as forward referenced |
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191 return; |
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192 } |
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193 |
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194 memsize = v->type->size(loc); |
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195 memalignsize = v->type->alignsize(); |
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196 xalign = v->type->memalign(sc->structalign); |
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197 alignmember(xalign, memalignsize, &sc->offset); |
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198 v->offset = sc->offset; |
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199 sc->offset += memsize; |
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200 if (sc->offset > structsize) |
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201 structsize = sc->offset; |
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202 if (sc->structalign < memalignsize) |
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203 memalignsize = sc->structalign; |
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204 if (alignsize < memalignsize) |
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205 alignsize = memalignsize; |
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206 //printf("\talignsize = %d\n", alignsize); |
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207 |
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208 v->storage_class |= STCfield; |
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209 //printf(" addField '%s' to '%s' at offset %d, size = %d\n", v->toChars(), toChars(), v->offset, memsize); |
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210 fields.push(v); |
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211 } |
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212 |
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213 |
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214 /********************************* StructDeclaration ****************************/ |
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215 |
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216 StructDeclaration::StructDeclaration(Loc loc, Identifier *id) |
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217 : AggregateDeclaration(loc, id) |
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218 { |
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219 zeroInit = 0; // assume false until we do semantic processing |
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220 hasIdentityAssign = 0; |
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221 cpctor = NULL; |
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222 postblit = NULL; |
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223 |
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224 // For forward references |
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225 type = new TypeStruct(this); |
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226 } |
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227 |
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228 Dsymbol *StructDeclaration::syntaxCopy(Dsymbol *s) |
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229 { |
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230 StructDeclaration *sd; |
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231 |
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232 if (s) |
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233 sd = (StructDeclaration *)s; |
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234 else |
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235 sd = new StructDeclaration(loc, ident); |
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236 ScopeDsymbol::syntaxCopy(sd); |
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237 return sd; |
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238 } |
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239 |
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240 void StructDeclaration::semantic(Scope *sc) |
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241 { int i; |
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242 Scope *sc2; |
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243 |
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244 //printf("+StructDeclaration::semantic(this=%p, '%s')\n", this, toChars()); |
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245 |
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246 //static int count; if (++count == 20) *(char*)0=0; |
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247 |
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248 assert(type); |
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249 if (!members) // if forward reference |
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250 return; |
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251 |
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252 if (symtab) |
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253 { if (!scope) |
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254 return; // semantic() already completed |
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255 } |
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256 else |
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257 symtab = new DsymbolTable(); |
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258 |
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259 Scope *scx = NULL; |
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260 if (scope) |
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261 { sc = scope; |
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262 scx = scope; // save so we don't make redundant copies |
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263 scope = NULL; |
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264 } |
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265 |
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266 parent = sc->parent; |
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267 #if STRUCTTHISREF |
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268 handle = type; |
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269 #else |
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270 handle = type->pointerTo(); |
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271 #endif |
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272 structalign = sc->structalign; |
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273 protection = sc->protection; |
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274 storage_class |= sc->stc; |
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275 if (sc->stc & STCdeprecated) |
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276 isdeprecated = 1; |
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277 assert(!isAnonymous()); |
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278 if (sc->stc & STCabstract) |
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279 error("structs, unions cannot be abstract"); |
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280 if (storage_class & STCinvariant) |
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281 type = type->invariantOf(); |
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282 else if (storage_class & STCconst) |
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283 type = type->constOf(); |
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284 |
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285 if (sizeok == 0) // if not already done the addMember step |
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286 { |
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287 for (i = 0; i < members->dim; i++) |
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288 { |
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289 Dsymbol *s = (Dsymbol *)members->data[i]; |
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290 //printf("adding member '%s' to '%s'\n", s->toChars(), this->toChars()); |
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291 s->addMember(sc, this, 1); |
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292 } |
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293 } |
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294 |
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295 sizeok = 0; |
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296 sc2 = sc->push(this); |
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297 sc2->stc &= storage_class & (STCconst | STCinvariant); |
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298 sc2->parent = this; |
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299 if (isUnionDeclaration()) |
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300 sc2->inunion = 1; |
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301 sc2->protection = PROTpublic; |
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302 sc2->explicitProtection = 0; |
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303 |
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304 int members_dim = members->dim; |
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305 for (i = 0; i < members_dim; i++) |
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306 { |
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307 Dsymbol *s = (Dsymbol *)members->data[i]; |
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308 s->semantic(sc2); |
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309 if (isUnionDeclaration()) |
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310 sc2->offset = 0; |
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311 #if 0 |
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312 if (sizeok == 2) |
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313 { //printf("forward reference\n"); |
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314 break; |
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315 } |
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316 #endif |
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317 } |
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318 |
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319 /* The TypeInfo_Struct is expecting an opEquals and opCmp with |
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320 * a parameter that is a pointer to the struct. But if there |
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321 * isn't one, but is an opEquals or opCmp with a value, write |
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322 * another that is a shell around the value: |
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323 * int opCmp(struct *p) { return opCmp(*p); } |
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324 */ |
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325 |
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326 TypeFunction *tfeqptr; |
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327 { |
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328 Arguments *arguments = new Arguments; |
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329 Argument *arg = new Argument(STCin, handle, Id::p, NULL); |
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330 |
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331 arguments->push(arg); |
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332 tfeqptr = new TypeFunction(arguments, Type::tint32, 0, LINKd); |
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333 tfeqptr = (TypeFunction *)tfeqptr->semantic(0, sc); |
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334 } |
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335 |
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336 TypeFunction *tfeq; |
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337 { |
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338 Arguments *arguments = new Arguments; |
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339 Argument *arg = new Argument(STCin, type, NULL, NULL); |
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340 |
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341 arguments->push(arg); |
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342 tfeq = new TypeFunction(arguments, Type::tint32, 0, LINKd); |
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343 tfeq = (TypeFunction *)tfeq->semantic(0, sc); |
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344 } |
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345 |
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346 Identifier *id = Id::eq; |
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347 for (int i = 0; i < 2; i++) |
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348 { |
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349 Dsymbol *s = search_function(this, id); |
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350 FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL; |
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351 if (fdx) |
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352 { FuncDeclaration *fd = fdx->overloadExactMatch(tfeqptr); |
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353 if (!fd) |
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354 { fd = fdx->overloadExactMatch(tfeq); |
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355 if (fd) |
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356 { // Create the thunk, fdptr |
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357 FuncDeclaration *fdptr = new FuncDeclaration(loc, loc, fdx->ident, STCundefined, tfeqptr); |
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358 Expression *e = new IdentifierExp(loc, Id::p); |
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359 e = new PtrExp(loc, e); |
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360 Expressions *args = new Expressions(); |
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361 args->push(e); |
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362 e = new IdentifierExp(loc, id); |
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363 e = new CallExp(loc, e, args); |
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364 fdptr->fbody = new ReturnStatement(loc, e); |
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365 ScopeDsymbol *s = fdx->parent->isScopeDsymbol(); |
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366 assert(s); |
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367 s->members->push(fdptr); |
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368 fdptr->addMember(sc, s, 1); |
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369 fdptr->semantic(sc2); |
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370 } |
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371 } |
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372 } |
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373 |
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374 id = Id::cmp; |
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375 } |
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376 |
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377 dtor = buildDtor(sc2); |
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378 postblit = buildPostBlit(sc2); |
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379 cpctor = buildCpCtor(sc2); |
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380 buildOpAssign(sc2); |
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381 |
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382 sc2->pop(); |
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383 |
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384 if (sizeok == 2) |
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385 { // semantic() failed because of forward references. |
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386 // Unwind what we did, and defer it for later |
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387 fields.setDim(0); |
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388 structsize = 0; |
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389 alignsize = 0; |
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390 structalign = 0; |
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391 |
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392 scope = scx ? scx : new Scope(*sc); |
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393 scope->setNoFree(); |
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394 scope->module->addDeferredSemantic(this); |
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395 //printf("\tdeferring %s\n", toChars()); |
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396 return; |
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397 } |
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398 |
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399 // 0 sized struct's are set to 1 byte |
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400 if (structsize == 0) |
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401 { |
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402 structsize = 1; |
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403 alignsize = 1; |
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404 } |
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405 |
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406 // Round struct size up to next alignsize boundary. |
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407 // This will ensure that arrays of structs will get their internals |
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408 // aligned properly. |
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409 structsize = (structsize + alignsize - 1) & ~(alignsize - 1); |
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410 |
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411 sizeok = 1; |
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412 Module::dprogress++; |
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413 |
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414 //printf("-StructDeclaration::semantic(this=%p, '%s')\n", this, toChars()); |
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415 |
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416 // Determine if struct is all zeros or not |
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417 zeroInit = 1; |
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418 for (i = 0; i < fields.dim; i++) |
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419 { |
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420 Dsymbol *s = (Dsymbol *)fields.data[i]; |
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421 VarDeclaration *vd = s->isVarDeclaration(); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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422 if (vd && !vd->isDataseg()) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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423 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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424 if (vd->init) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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425 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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426 // Should examine init to see if it is really all 0's |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
427 zeroInit = 0; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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428 break; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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429 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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430 else |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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431 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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432 if (!vd->type->isZeroInit()) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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433 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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434 zeroInit = 0; |
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435 break; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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436 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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437 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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438 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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439 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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440 |
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441 /* Look for special member functions. |
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442 */ |
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443 ctor = (CtorDeclaration *)search(0, Id::ctor, 0); |
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444 inv = (InvariantDeclaration *)search(0, Id::classInvariant, 0); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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445 aggNew = (NewDeclaration *)search(0, Id::classNew, 0); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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446 aggDelete = (DeleteDeclaration *)search(0, Id::classDelete, 0); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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447 |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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448 if (sc->func) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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449 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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450 semantic2(sc); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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451 semantic3(sc); |
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452 } |
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453 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
454 |
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455 void StructDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
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456 { int i; |
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457 |
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458 buf->printf("%s ", kind()); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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459 if (!isAnonymous()) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
460 buf->writestring(toChars()); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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461 if (!members) |
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462 { |
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|
463 buf->writeByte(';'); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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464 buf->writenl(); |
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465 return; |
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|
466 } |
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467 buf->writenl(); |
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468 buf->writeByte('{'); |
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469 buf->writenl(); |
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470 for (i = 0; i < members->dim; i++) |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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471 { |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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472 Dsymbol *s = (Dsymbol *)members->data[i]; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
473 |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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474 buf->writestring(" "); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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475 s->toCBuffer(buf, hgs); |
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|
476 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
477 buf->writeByte('}'); |
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|
478 buf->writenl(); |
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|
479 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
480 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
481 |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
482 const char *StructDeclaration::kind() |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
483 { |
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484 return "struct"; |
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|
485 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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changeset
|
486 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
487 /********************************* UnionDeclaration ****************************/ |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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changeset
|
488 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
489 UnionDeclaration::UnionDeclaration(Loc loc, Identifier *id) |
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490 : StructDeclaration(loc, id) |
f04dde6e882c
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|
491 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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changeset
|
492 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
493 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
494 Dsymbol *UnionDeclaration::syntaxCopy(Dsymbol *s) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff
changeset
|
495 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
496 UnionDeclaration *ud; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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parents:
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changeset
|
497 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
498 if (s) |
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|
499 ud = (UnionDeclaration *)s; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
500 else |
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|
501 ud = new UnionDeclaration(loc, ident); |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff
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|
502 StructDeclaration::syntaxCopy(ud); |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
503 return ud; |
f04dde6e882c
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|
504 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
505 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
506 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
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|
507 const char *UnionDeclaration::kind() |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
508 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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diff
changeset
|
509 return "union"; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
510 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
511 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff
changeset
|
512 |