Mercurial > projects > ddmd
annotate dmd/EnumDeclaration.d @ 191:52188e7e3fb5
Fixed deprecated features, now compiles with DMD2.058
Also changed Array allocation policy:
Now doesn't reallocate but malloc's, followed by a memcpy (no free).
(this fixes a crash while compiling druntime. Same bug in dmd)
| author | korDen@korDen-pc |
|---|---|
| date | Sun, 25 Mar 2012 03:11:12 +0400 |
| parents | b0d41ff5e0df |
| children |
| rev | line source |
|---|---|
| 0 | 1 module dmd.EnumDeclaration; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.ScopeDsymbol; |
| 5 import dmd.AddExp; | |
| 6 import dmd.Type; | |
| 7 import dmd.CmpExp; | |
| 8 import dmd.IntegerExp; | |
| 9 import dmd.EqualExp; | |
| 10 import dmd.TOK; | |
| 11 import dmd.Id; | |
| 12 import dmd.TY; | |
| 13 import dmd.DsymbolTable; | |
| 14 import dmd.STC; | |
| 15 import dmd.Expression; | |
| 16 import dmd.Identifier; | |
| 17 import dmd.Dsymbol; | |
| 18 import dmd.Scope; | |
| 19 import dmd.OutBuffer; | |
| 20 import dmd.HdrGenState; | |
| 21 import dmd.Global; | |
| 22 import dmd.Loc; | |
|
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23 import dmd.Module; |
| 0 | 24 import dmd.TypeEnum; |
| 25 import dmd.EnumMember; | |
| 26 import dmd.DYNCAST; | |
| 27 import dmd.WANT; | |
| 28 import dmd.Id; | |
| 79 | 29 import dmd.Json; |
| 0 | 30 import dmd.Lexer; |
| 31 | |
| 32 import dmd.backend.SC; | |
| 33 import dmd.backend.FL; | |
| 34 import dmd.backend.Util; | |
| 35 import dmd.backend.Symbol; | |
| 36 import dmd.backend.Classsym; | |
| 37 import dmd.backend.SFL; | |
| 38 import dmd.backend.LIST; | |
| 39 import dmd.codegen.Util; | |
| 40 | |
| 41 import std.stdio : writef; | |
| 42 | |
|
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43 import dmd.DDMDExtensions; |
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44 |
| 0 | 45 class EnumDeclaration : ScopeDsymbol |
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46 { |
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47 mixin insertMemberExtension!(typeof(this)); |
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48 |
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49 /* enum ident : memtype { ... } |
| 0 | 50 */ |
| 51 Type type; // the TypeEnum | |
| 52 Type memtype; // type of the members | |
| 53 | |
| 79 | 54 version (DMDV1) |
| 55 { | |
| 0 | 56 ulong maxval; |
| 57 ulong minval; | |
| 58 ulong defaultval; // default initializer | |
| 79 | 59 } |
| 60 else | |
| 61 { | |
| 0 | 62 Expression maxval; |
| 63 Expression minval; | |
| 64 Expression defaultval; // default initializer | |
| 65 } | |
| 138 | 66 bool isdeprecated = false; |
| 67 bool isdone = false; // 0: not done | |
| 68 // 1: semantic() successfully completed | |
| 69 | |
| 0 | 70 this(Loc loc, Identifier id, Type memtype) |
| 71 { | |
| 178 | 72 register(); |
| 0 | 73 super(id); |
| 74 this.loc = loc; | |
| 75 type = new TypeEnum(this); | |
| 76 this.memtype = memtype; | |
| 77 } | |
| 78 | |
| 72 | 79 override Dsymbol syntaxCopy(Dsymbol s) |
| 0 | 80 { |
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81 Type t = null; |
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82 if (memtype) |
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83 t = memtype.syntaxCopy(); |
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84 |
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85 EnumDeclaration ed; |
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86 if (s) |
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87 { ed = cast(EnumDeclaration)s; |
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88 ed.memtype = t; |
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89 } |
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90 else |
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91 ed = new EnumDeclaration(loc, ident, t); |
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92 ScopeDsymbol.syntaxCopy(ed); |
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93 return ed; |
| 0 | 94 } |
| 95 | |
| 72 | 96 override void semantic(Scope sc) |
| 0 | 97 { |
| 98 Type t; | |
| 99 Scope sce; | |
| 100 | |
| 101 //writef("EnumDeclaration.semantic(sd = %p, '%s') %s\n", sc.scopesym, sc.scopesym.toChars(), toChars()); | |
| 102 //writef("EnumDeclaration.semantic() %s\n", toChars()); | |
| 103 if (!members) // enum ident; | |
| 104 return; | |
| 105 | |
| 106 if (!memtype && !isAnonymous()) | |
| 107 { | |
| 108 // Set memtype if we can to reduce fwd reference errors | |
| 109 memtype = Type.tint32; // case 1) enum ident { ... } | |
| 110 } | |
| 111 | |
| 112 if (symtab) // if already done | |
| 113 { | |
| 138 | 114 if (isdone || !scope_) |
| 0 | 115 return; // semantic() already completed |
| 116 } | |
| 117 else | |
| 118 symtab = new DsymbolTable(); | |
| 119 | |
| 120 Scope scx = null; | |
| 121 if (scope_) | |
| 122 { sc = scope_; | |
| 123 scx = scope_; // save so we don't make redundant copies | |
| 124 scope_ = null; | |
| 125 } | |
| 179 | 126 |
| 127 uint dprogress_save = global.dprogress; | |
| 0 | 128 |
| 129 if (sc.stc & STC.STCdeprecated) | |
| 130 isdeprecated = true; | |
| 131 | |
| 132 parent = sc.parent; | |
| 133 | |
| 134 /* The separate, and distinct, cases are: | |
| 135 * 1. enum { ... } | |
| 136 * 2. enum : memtype { ... } | |
| 137 * 3. enum ident { ... } | |
| 138 * 4. enum ident : memtype { ... } | |
| 139 */ | |
| 140 | |
| 141 if (memtype) | |
| 142 { | |
| 143 memtype = memtype.semantic(loc, sc); | |
| 144 | |
| 145 /* Check to see if memtype is forward referenced | |
| 146 */ | |
| 147 if (memtype.ty == TY.Tenum) | |
| 148 { EnumDeclaration sym = cast(EnumDeclaration)memtype.toDsymbol(sc); | |
| 149 if (!sym.memtype || !sym.members || !sym.symtab || sym.scope_) | |
| 150 { | |
| 151 // memtype is forward referenced, so try again later | |
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152 scope_ = scx ? scx : sc.clone(); |
| 0 | 153 scope_.setNoFree(); |
| 154 scope_.module_.addDeferredSemantic(this); | |
| 179 | 155 global.dprogress = dprogress_save; |
| 156 //writef("\tdeferring %s\n", toChars()); | |
| 0 | 157 return; |
| 158 } | |
| 159 } | |
| 138 | 160 static if (false) |
| 161 { | |
| 0 | 162 // Decided to abandon this restriction for D 2.0 |
| 163 if (!memtype.isintegral()) | |
| 164 { error("base type must be of integral type, not %s", memtype.toChars()); | |
| 165 memtype = Type.tint32; | |
| 166 } | |
| 167 } | |
| 168 } | |
| 169 | |
| 138 | 170 isdone = true; |
| 179 | 171 global.dprogress++; |
| 138 | 172 |
| 0 | 173 type = type.semantic(loc, sc); |
| 174 if (isAnonymous()) | |
| 175 sce = sc; | |
| 176 else | |
| 177 { sce = sc.push(this); | |
| 178 sce.parent = this; | |
| 179 } | |
| 180 if (members.dim == 0) | |
| 181 error("enum %s must have at least one member", toChars()); | |
| 182 int first = 1; | |
| 183 Expression elast = null; | |
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184 foreach (Dsymbol s; members) |
| 0 | 185 { |
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186 EnumMember em = s.isEnumMember(); |
| 0 | 187 Expression e; |
| 188 | |
| 189 if (!em) | |
| 190 /* The e.semantic(sce) can insert other symbols, such as | |
| 191 * template instances and function literals. | |
| 192 */ | |
| 193 continue; | |
| 194 | |
| 195 //printf(" Enum member '%s'\n",em.toChars()); | |
| 196 if (em.type) | |
| 197 em.type = em.type.semantic(em.loc, sce); | |
| 198 e = em.value; | |
| 199 if (e) | |
| 200 { | |
| 201 assert(e.dyncast() == DYNCAST.DYNCAST_EXPRESSION); | |
| 202 e = e.semantic(sce); | |
| 203 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 204 if (memtype) | |
| 205 { | |
| 206 e = e.implicitCastTo(sce, memtype); | |
| 207 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 208 if (!isAnonymous()) | |
| 209 e = e.castTo(sce, type); | |
| 210 t = memtype; | |
| 211 } | |
| 212 else if (em.type) | |
| 213 { | |
| 214 e = e.implicitCastTo(sce, em.type); | |
| 215 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 216 assert(isAnonymous()); | |
| 217 t = e.type; | |
| 218 } | |
| 219 else | |
| 220 t = e.type; | |
| 221 } | |
| 222 else if (first) | |
| 223 { | |
| 224 if (memtype) | |
| 225 t = memtype; | |
| 226 else if (em.type) | |
| 227 t = em.type; | |
| 228 else | |
| 229 t = Type.tint32; | |
| 230 e = new IntegerExp(em.loc, 0, Type.tint32); | |
| 231 e = e.implicitCastTo(sce, t); | |
| 232 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 233 if (!isAnonymous()) | |
| 234 e = e.castTo(sce, type); | |
| 235 } | |
| 236 else | |
| 237 { | |
| 238 // Set value to (elast + 1). | |
| 239 // But first check that (elast != t.max) | |
| 240 assert(elast); | |
| 241 e = new EqualExp(TOK.TOKequal, em.loc, elast, t.getProperty(Loc(0), Id.max)); | |
| 242 e = e.semantic(sce); | |
| 243 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 244 if (e.toInteger()) | |
| 245 error("overflow of enum value %s", elast.toChars()); | |
| 246 | |
| 247 // Now set e to (elast + 1) | |
| 248 e = new AddExp(em.loc, elast, new IntegerExp(em.loc, 1, Type.tint32)); | |
| 249 e = e.semantic(sce); | |
| 250 e = e.castTo(sce, elast.type); | |
| 251 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 252 } | |
| 253 elast = e; | |
| 254 em.value = e; | |
| 255 | |
| 256 // Add to symbol table only after evaluating 'value' | |
| 257 if (isAnonymous()) | |
| 258 { | |
| 259 /* Anonymous enum members get added to enclosing scope. | |
| 260 */ | |
| 261 for (Scope scxx = sce; scxx; scxx = scxx.enclosing) | |
| 262 { | |
| 263 if (scxx.scopesym) | |
| 264 { | |
| 265 if (!scxx.scopesym.symtab) | |
| 266 scxx.scopesym.symtab = new DsymbolTable(); | |
| 13 | 267 em.addMember(sce, scxx.scopesym, true); |
| 0 | 268 break; |
| 269 } | |
| 270 } | |
| 271 } | |
| 272 else | |
| 13 | 273 em.addMember(sc, this, true); |
| 0 | 274 |
| 275 /* Compute .min, .max and .default values. | |
| 276 * If enum doesn't have a name, we can never identify the enum type, | |
| 277 * so there is no purpose for a .min, .max or .default | |
| 278 */ | |
| 279 if (!isAnonymous()) | |
| 280 { | |
| 281 if (first) | |
| 282 { defaultval = e; | |
| 283 minval = e; | |
| 284 maxval = e; | |
| 285 } | |
| 286 else | |
| 287 { Expression ec; | |
| 288 | |
| 289 /* In order to work successfully with UDTs, | |
| 290 * build expressions to do the comparisons, | |
| 291 * and let the semantic analyzer and constant | |
| 292 * folder give us the result. | |
| 293 */ | |
| 294 | |
| 295 // Compute if(e < minval) | |
| 296 ec = new CmpExp(TOK.TOKlt, em.loc, e, minval); | |
| 297 ec = ec.semantic(sce); | |
| 298 ec = ec.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 299 if (ec.toInteger()) | |
| 300 minval = e; | |
| 301 | |
| 302 ec = new CmpExp(TOK.TOKgt, em.loc, e, maxval); | |
| 303 ec = ec.semantic(sce); | |
| 304 ec = ec.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 305 if (ec.toInteger()) | |
| 306 maxval = e; | |
| 307 } | |
| 308 } | |
| 309 first = 0; | |
| 310 } | |
| 311 //printf("defaultval = %lld\n", defaultval); | |
| 312 | |
| 313 //if (defaultval) printf("defaultval: %s %s\n", defaultval.toChars(), defaultval.type.toChars()); | |
| 314 if (sc != sce) | |
| 315 sce.pop(); | |
| 316 //members.print(); | |
| 317 } | |
| 318 | |
| 72 | 319 override bool oneMember(Dsymbol* ps) |
| 0 | 320 { |
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321 if (isAnonymous()) |
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322 return Dsymbol.oneMembers(members, ps); |
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323 return Dsymbol.oneMember(ps); |
| 0 | 324 } |
| 325 | |
| 72 | 326 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 327 { |
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328 buf.writestring("enum "); |
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329 if (ident) |
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330 { buf.writestring(ident.toChars()); |
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331 buf.writeByte(' '); |
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332 } |
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333 if (memtype) |
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334 { |
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335 buf.writestring(": "); |
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336 memtype.toCBuffer(buf, null, hgs); |
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337 } |
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338 if (!members) |
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339 { |
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340 buf.writeByte(';'); |
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341 buf.writenl(); |
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342 return; |
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343 } |
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344 buf.writenl(); |
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345 buf.writeByte('{'); |
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346 buf.writenl(); |
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347 foreach(Dsymbol s; members) |
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348 { |
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349 EnumMember em = s.isEnumMember(); |
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350 if (!em) |
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351 continue; |
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352 //buf.writestring(" "); |
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353 em.toCBuffer(buf, hgs); |
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354 buf.writeByte(','); |
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355 buf.writenl(); |
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356 } |
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357 buf.writeByte('}'); |
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358 buf.writenl(); |
| 0 | 359 } |
| 360 | |
| 72 | 361 override Type getType() |
| 0 | 362 { |
| 363 return type; | |
| 364 } | |
| 365 | |
| 72 | 366 override string kind() |
| 0 | 367 { |
| 368 return "enum"; | |
| 369 } | |
| 370 | |
| 371 version (DMDV2) { | |
| 72 | 372 override Dsymbol search(Loc, Identifier ident, int flags) |
| 0 | 373 { |
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374 //printf("%s.EnumDeclaration.search('%s')\n", toChars(), ident.toChars()); |
| 0 | 375 if (scope_) |
| 376 // Try one last time to resolve this enum | |
| 377 semantic(scope_); | |
| 378 | |
| 379 if (!members || !symtab || scope_) | |
| 380 { | |
| 381 error("is forward referenced when looking for '%s'", ident.toChars()); | |
| 382 //*(char*)0=0; | |
| 383 return null; | |
| 384 } | |
| 385 | |
| 386 return ScopeDsymbol.search(loc, ident, flags); | |
| 387 } | |
| 388 } | |
| 72 | 389 override bool isDeprecated() // is Dsymbol deprecated? |
| 0 | 390 { |
| 391 return isdeprecated; | |
| 392 } | |
| 393 | |
| 72 | 394 override void emitComment(Scope sc) |
| 0 | 395 { |
| 396 assert(false); | |
| 397 } | |
| 79 | 398 |
| 399 override void toJsonBuffer(OutBuffer buf) | |
| 400 { | |
| 401 //writef("EnumDeclaration.toJsonBuffer()\n"); | |
| 402 if (isAnonymous()) | |
| 403 { | |
| 404 if (members) | |
| 405 { | |
| 406 foreach (Dsymbol s; members) | |
| 407 { | |
| 408 s.toJsonBuffer(buf); | |
| 409 buf.writestring(",\n"); | |
| 410 } | |
| 411 JsonRemoveComma(buf); | |
| 412 } | |
| 413 return; | |
| 414 } | |
| 0 | 415 |
| 79 | 416 buf.writestring("{\n"); |
| 417 | |
| 418 JsonProperty(buf, Pname, toChars()); | |
| 419 JsonProperty(buf, Pkind, kind()); | |
| 420 if (comment) | |
| 421 JsonProperty(buf, Pcomment, comment); | |
| 422 | |
| 423 if (loc.linnum) | |
| 424 JsonProperty(buf, Pline, loc.linnum); | |
| 425 | |
| 426 if (memtype) | |
| 427 JsonProperty(buf, "base", memtype.toChars()); | |
| 428 | |
| 429 JsonString(buf, Pmembers); | |
| 430 buf.writestring(" : [\n"); | |
| 431 size_t offset = buf.offset; | |
| 432 foreach (Dsymbol s; members) | |
| 433 { | |
| 434 if (offset != buf.offset) | |
| 435 { | |
| 96 | 436 buf.writestring(",\n"); |
| 79 | 437 offset = buf.offset; |
| 438 } | |
| 439 s.toJsonBuffer(buf); | |
| 440 } | |
| 96 | 441 JsonRemoveComma(buf); |
| 79 | 442 buf.writestring("]\n"); |
| 443 | |
| 444 buf.writestring("}\n"); | |
| 445 } | |
| 446 | |
| 72 | 447 override void toDocBuffer(OutBuffer buf) |
| 0 | 448 { |
| 449 assert(false); | |
| 450 } | |
| 451 | |
| 72 | 452 override EnumDeclaration isEnumDeclaration() { return this; } |
| 0 | 453 |
| 72 | 454 override void toObjFile(int multiobj) // compile to .obj file |
| 0 | 455 { |
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456 //printf("EnumDeclaration.toObjFile('%s')\n", toChars()); |
| 0 | 457 version (DMDV2) { |
| 458 if (isAnonymous()) | |
| 459 return; | |
| 460 } | |
| 461 | |
| 462 if (global.params.symdebug) | |
| 463 toDebug(); | |
| 464 | |
| 465 type.getTypeInfo(null); // generate TypeInfo | |
| 466 | |
| 467 TypeEnum tc = cast(TypeEnum)type; | |
| 468 if (!tc.sym.defaultval || type.isZeroInit(Loc(0))) { | |
| 469 ; | |
| 470 } else { | |
| 471 SC scclass = SCglobal; | |
| 472 if (inTemplateInstance()) | |
| 473 scclass = SCcomdat; | |
| 474 | |
| 475 // Generate static initializer | |
| 476 toInitializer(); | |
| 477 sinit.Sclass = scclass; | |
| 478 sinit.Sfl = FLdata; | |
| 479 version (ELFOBJ) { // Burton | |
| 480 sinit.Sseg = Segment.CDATA; | |
| 481 } | |
| 482 version (MACHOBJ) { | |
| 483 sinit.Sseg = Segment.DATA; | |
| 484 } | |
| 485 version (DMDV1) { | |
| 486 dtnbytes(&sinit.Sdt, tc.size(0), cast(char*)&tc.sym.defaultval); | |
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487 //sinit.Sdt = tc.sym.init.toDt(); |
| 0 | 488 } |
| 489 version (DMDV2) { | |
| 490 tc.sym.defaultval.toDt(&sinit.Sdt); | |
| 491 } | |
| 492 outdata(sinit); | |
| 493 } | |
| 494 } | |
| 495 | |
| 496 void toDebug() | |
| 497 { | |
| 498 assert(false); | |
| 499 } | |
| 500 | |
| 72 | 501 override int cvMember(ubyte* p) |
| 0 | 502 { |
| 503 assert(false); | |
| 504 } | |
| 505 | |
| 506 Symbol* sinit; | |
| 507 | |
| 508 Symbol* toInitializer() | |
| 509 { | |
| 510 Symbol* s; | |
| 511 Classsym* stag; | |
| 512 | |
| 513 if (!sinit) | |
| 514 { | |
| 515 stag = fake_classsym(Id.ClassInfo); | |
| 516 Identifier ident_save = ident; | |
| 517 if (!ident) | |
| 518 ident = Lexer.uniqueId("__enum"); | |
| 519 s = toSymbolX("__init", SCextern, stag.Stype, "Z"); | |
| 520 ident = ident_save; | |
| 521 s.Sfl = FLextern; | |
| 522 s.Sflags |= SFLnodebug; | |
| 523 slist_add(s); | |
| 524 sinit = s; | |
| 525 } | |
| 526 | |
| 527 return sinit; | |
| 528 } | |
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529 }; |