Mercurial > projects > ddmd
annotate dmd/VarDeclaration.d @ 187:b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
| author | Abscissa |
|---|---|
| date | Tue, 07 Jun 2011 23:37:34 -0400 |
| parents | cd48cb899aee |
| children |
| rev | line source |
|---|---|
| 0 | 1 module dmd.VarDeclaration; |
| 2 | |
| 114 | 3 import dmd.common; |
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4 import dmd.Array; |
| 0 | 5 import dmd.Declaration; |
| 6 import dmd.SliceExp; | |
| 7 import dmd.ClassDeclaration; | |
| 8 import dmd.DeleteExp; | |
| 9 import dmd.SymOffExp; | |
| 10 import dmd.DotIdExp; | |
| 11 import dmd.PtrExp; | |
| 12 import dmd.CallExp; | |
| 13 import dmd.DotVarExp; | |
| 14 import dmd.CommaExp; | |
| 15 import dmd.CastExp; | |
| 16 import dmd.WANT; | |
| 17 import dmd.StructDeclaration; | |
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18 import dmd.StorageClassDeclaration; |
| 0 | 19 import dmd.DsymbolExp; |
| 20 import dmd.TypeSArray; | |
| 21 import dmd.IntegerExp; | |
| 22 import dmd.VarExp; | |
| 23 import dmd.AssignExp; | |
| 24 import dmd.TypeTypedef; | |
| 25 import dmd.ArrayInitializer; | |
| 26 import dmd.StructInitializer; | |
| 27 import dmd.NewExp; | |
| 28 import dmd.TupleDeclaration; | |
| 29 import dmd.AggregateDeclaration; | |
| 30 import dmd.InterfaceDeclaration; | |
| 31 import dmd.TemplateInstance; | |
| 32 import dmd.Id; | |
| 33 import dmd.Initializer; | |
| 34 import dmd.TypeStruct; | |
| 35 import dmd.TypeTuple; | |
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36 import dmd.Parameter; |
| 0 | 37 import dmd.ExpInitializer; |
| 38 import dmd.ArrayTypes; | |
| 39 import dmd.Dsymbol; | |
| 40 import dmd.Expression; | |
| 41 import dmd.Loc; | |
| 42 import dmd.STC; | |
| 43 import dmd.TOK; | |
| 44 import dmd.TupleExp; | |
| 45 import dmd.Global; | |
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46 import dmd.Module; |
| 0 | 47 import dmd.FuncDeclaration; |
| 48 import dmd.Type; | |
| 49 import dmd.TY; | |
| 50 import dmd.LINK; | |
| 51 import dmd.Scope; | |
| 52 import dmd.Identifier; | |
| 53 import dmd.OutBuffer; | |
| 54 import dmd.HdrGenState; | |
| 55 import dmd.PROT; | |
| 73 | 56 import dmd.expression.Util; |
| 0 | 57 |
| 58 import dmd.backend.Symbol; | |
| 59 import dmd.backend.TYM; | |
| 60 import dmd.backend.FL; | |
| 61 import dmd.backend.DT; | |
| 62 import dmd.backend.mTY; | |
| 63 import dmd.backend.SC; | |
| 64 import dmd.backend.mTYman; | |
| 65 import dmd.backend.TYPE; | |
| 66 import dmd.backend.Util; | |
| 67 import dmd.backend.LIST; | |
| 68 | |
| 69 import std.stdio : writef; | |
| 70 import std.string : toStringz; | |
| 71 | |
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72 import dmd.DDMDExtensions; |
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73 |
| 0 | 74 class VarDeclaration : Declaration |
| 75 { | |
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76 mixin insertMemberExtension!(typeof(this)); |
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77 |
| 0 | 78 Initializer init; |
| 79 uint offset; | |
| 80 bool noauto; // no auto semantics | |
| 81 version (DMDV2) { | |
| 98 | 82 FuncDeclarations nestedrefs; // referenced by these lexically nested functions |
| 83 bool isargptr = false; // if parameter that _argptr points to | |
| 0 | 84 } else { |
| 85 int nestedref; // referenced by a lexically nested function | |
| 86 } | |
| 87 int ctorinit; // it has been initialized in a ctor | |
| 88 int onstack; // 1: it has been allocated on the stack | |
| 89 // 2: on stack, run destructor anyway | |
| 90 int canassign; // it can be assigned to | |
| 91 Dsymbol aliassym; // if redone as alias to another symbol | |
| 92 Expression value; // when interpreting, this is the value | |
| 93 // (null if value not determinable) | |
| 94 version (DMDV2) { | |
| 95 VarDeclaration rundtor; // if !null, rundtor is tested at runtime to see | |
| 96 // if the destructor should be run. Used to prevent | |
| 97 // dtor calls on postblitted vars | |
| 98 } | |
| 99 | |
| 100 this(Loc loc, Type type, Identifier id, Initializer init) | |
| 101 { | |
| 178 | 102 register(); |
| 0 | 103 super(id); |
| 104 | |
| 98 | 105 debug |
| 106 { | |
| 0 | 107 if (!type && !init) |
| 108 { | |
| 109 writef("VarDeclaration('%s')\n", id.toChars()); | |
| 110 //*(char*)0=0; | |
| 111 } | |
| 112 } | |
| 113 assert(type || init); | |
| 114 this.type = type; | |
| 115 this.init = init; | |
| 98 | 116 version(_DH) |
| 117 { | |
| 118 this.htype = null; | |
| 119 this.hinit = null; | |
| 120 } | |
| 0 | 121 this.loc = loc; |
| 122 | |
| 98 | 123 /* TODO: |
| 124 #if DMDV1 | |
| 125 nestedref = 0; | |
| 126 #endif | |
| 127 ctorinit = 0; | |
| 128 aliassym = NULL; | |
| 129 onstack = 0; | |
| 130 canassign = 0; | |
| 131 value = NULL; | |
| 132 rundtor = NULL; | |
| 133 */ | |
| 0 | 134 nestedrefs = new FuncDeclarations(); |
| 135 } | |
| 136 | |
| 72 | 137 override Dsymbol syntaxCopy(Dsymbol s) |
| 0 | 138 { |
| 139 //printf("VarDeclaration.syntaxCopy(%s)\n", toChars()); | |
| 140 | |
| 141 VarDeclaration sv; | |
| 142 if (s) | |
| 143 { | |
| 144 sv = cast(VarDeclaration)s; | |
| 145 } | |
| 146 else | |
| 147 { | |
| 148 Initializer init = null; | |
| 149 if (this.init) | |
| 150 { | |
| 151 init = this.init.syntaxCopy(); | |
| 152 //init.isExpInitializer().exp.print(); | |
| 153 //init.isExpInitializer().exp.dump(0); | |
| 154 } | |
| 155 | |
| 156 sv = new VarDeclaration(loc, type ? type.syntaxCopy() : null, ident, init); | |
| 157 sv.storage_class = storage_class; | |
| 158 } | |
| 159 | |
| 160 version (_DH) { | |
| 161 // Syntax copy for header file | |
| 162 if (!htype) // Don't overwrite original | |
| 163 { | |
| 164 if (type) // Make copy for both old and new instances | |
| 165 { htype = type.syntaxCopy(); | |
| 166 sv.htype = type.syntaxCopy(); | |
| 167 } | |
| 168 } | |
| 169 else // Make copy of original for new instance | |
| 170 sv.htype = htype.syntaxCopy(); | |
| 171 if (!hinit) | |
| 172 { | |
| 173 if (init) | |
| 174 { | |
| 175 hinit = init.syntaxCopy(); | |
| 176 sv.hinit = init.syntaxCopy(); | |
| 177 } | |
| 178 } | |
| 179 else | |
| 180 sv.hinit = hinit.syntaxCopy(); | |
| 181 } | |
| 182 return sv; | |
| 183 } | |
| 184 | |
| 72 | 185 override void semantic(Scope sc) |
| 0 | 186 { |
| 187 static if (false) { | |
| 188 printf("VarDeclaration.semantic('%s', parent = '%s')\n", toChars(), sc.parent.toChars()); | |
| 189 printf(" type = %s\n", type ? type.toChars() : "null"); | |
| 190 printf(" stc = x%x\n", sc.stc); | |
| 191 printf(" storage_class = x%x\n", storage_class); | |
| 192 printf("linkage = %d\n", sc.linkage); | |
| 193 //if (strcmp(toChars(), "mul") == 0) halt(); | |
| 194 } | |
| 195 | |
| 196 storage_class |= sc.stc; | |
| 197 if (storage_class & STC.STCextern && init) | |
| 198 error("extern symbols cannot have initializers"); | |
| 199 | |
| 200 /* If auto type inference, do the inference | |
| 201 */ | |
| 202 int inferred = 0; | |
| 203 if (!type) | |
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204 { |
| 0 | 205 inuse++; |
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206 |
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207 ArrayInitializer ai = init.isArrayInitializer(); |
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208 if (ai) |
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209 { |
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210 Expression e; |
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211 if (ai.isAssociativeArray()) |
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212 e = ai.toAssocArrayLiteral(); |
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213 else |
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214 e = init.toExpression(); |
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215 init = new ExpInitializer(e.loc, e); |
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216 type = init.inferType(sc); |
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217 if (type.ty == TY.Tsarray) |
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218 type = type.nextOf().arrayOf(); |
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219 } |
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220 else |
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221 type = init.inferType(sc); |
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222 |
| 0 | 223 inuse--; |
| 224 inferred = 1; | |
| 225 | |
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226 if (init.isArrayInitializer() && type.toBasetype().ty == TY.Tsarray) |
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227 { // Prefer array literals to give a T[] type rather than a T[dim] |
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228 type = type.toBasetype().nextOf().arrayOf(); |
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229 } |
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230 |
| 0 | 231 /* This is a kludge to support the existing syntax for RAII |
| 232 * declarations. | |
| 233 */ | |
| 234 storage_class &= ~STC.STCauto; | |
| 235 originalType = type; | |
| 236 } | |
| 237 else | |
| 238 { | |
| 239 if (!originalType) | |
| 240 originalType = type; | |
| 241 | |
| 242 type = type.semantic(loc, sc); | |
| 243 } | |
| 244 //printf(" semantic type = %s\n", type ? type.toChars() : "null"); | |
| 245 | |
| 246 type.checkDeprecated(loc, sc); | |
| 247 linkage = sc.linkage; | |
| 248 this.parent = sc.parent; | |
| 249 //printf("this = %p, parent = %p, '%s'\n", this, parent, parent.toChars()); | |
| 250 protection = sc.protection; | |
| 251 //printf("sc.stc = %x\n", sc.stc); | |
| 252 //printf("storage_class = x%x\n", storage_class); | |
| 253 | |
| 254 version (DMDV2) { | |
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255 static if (true) { |
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256 if (storage_class & STC.STCgshared && sc.func && sc.func.isSafe()) |
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257 { |
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258 error("__gshared not allowed in safe functions; use shared"); |
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259 } |
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260 } else { |
| 0 | 261 if (storage_class & STC.STCgshared && global.params.safe && !sc.module_.safe) |
| 262 { | |
| 263 error("__gshared not allowed in safe mode; use shared"); | |
| 264 } | |
| 265 } | |
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266 } |
| 0 | 267 |
| 268 Dsymbol parent = toParent(); | |
| 269 FuncDeclaration fd = parent.isFuncDeclaration(); | |
| 270 | |
| 271 Type tb = type.toBasetype(); | |
| 272 if (tb.ty == TY.Tvoid && !(storage_class & STC.STClazy)) | |
| 273 { error("voids have no value"); | |
| 274 type = Type.terror; | |
| 275 tb = type; | |
| 276 } | |
| 277 if (tb.ty == TY.Tfunction) | |
| 278 { error("cannot be declared to be a function"); | |
| 279 type = Type.terror; | |
| 280 tb = type; | |
| 281 } | |
| 282 if (tb.ty == TY.Tstruct) | |
| 283 { TypeStruct ts = cast(TypeStruct)tb; | |
| 284 | |
| 285 if (!ts.sym.members) | |
| 286 { | |
| 287 error("no definition of struct %s", ts.toChars()); | |
| 288 } | |
| 289 } | |
| 290 | |
| 291 if (tb.ty == TY.Ttuple) | |
| 292 { /* Instead, declare variables for each of the tuple elements | |
| 293 * and add those. | |
| 294 */ | |
| 295 TypeTuple tt = cast(TypeTuple)tb; | |
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296 size_t nelems = Parameter.dim(tt.arguments); |
| 0 | 297 Objects exps = new Objects(); |
| 298 exps.setDim(nelems); | |
| 299 Expression ie = init ? init.toExpression() : null; | |
| 300 | |
| 301 for (size_t i = 0; i < nelems; i++) | |
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302 { auto arg = Parameter.getNth(tt.arguments, i); |
| 0 | 303 |
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304 auto buf = new OutBuffer(); |
| 53 | 305 ///buf.printf("_%s_field_%zu", ident.toChars(), i); |
| 306 buf.printf("_%s_field_%s", ident.toChars(), i); | |
| 0 | 307 buf.writeByte(0); |
| 308 string name = buf.extractString(); | |
| 309 Identifier id = new Identifier(name, TOK.TOKidentifier); | |
| 310 | |
| 311 Expression einit = ie; | |
| 312 if (ie && ie.op == TOK.TOKtuple) | |
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313 { einit = (cast(TupleExp)ie).exps[i]; |
| 0 | 314 } |
| 315 Initializer ti = init; | |
| 316 if (einit) | |
| 317 { ti = new ExpInitializer(einit.loc, einit); | |
| 318 } | |
| 319 | |
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320 auto v = new VarDeclaration(loc, arg.type, id, ti); |
| 0 | 321 //printf("declaring field %s of type %s\n", v.toChars(), v.type.toChars()); |
| 322 v.semantic(sc); | |
| 323 | |
| 324 if (sc.scopesym) | |
| 325 { //printf("adding %s to %s\n", v.toChars(), sc.scopesym.toChars()); | |
| 326 if (sc.scopesym.members) | |
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327 sc.scopesym.members.push(v); |
| 0 | 328 } |
| 329 | |
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330 auto e = new DsymbolExp(loc, v); |
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331 exps[i] = e; |
| 0 | 332 } |
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333 auto v2 = new TupleDeclaration(loc, ident, exps); |
| 0 | 334 v2.isexp = 1; |
| 335 aliassym = v2; | |
| 336 return; | |
| 337 } | |
| 338 | |
| 339 Lagain: | |
| 340 /* Storage class can modify the type | |
| 341 */ | |
| 342 type = type.addStorageClass(storage_class); | |
| 343 | |
| 344 /* Adjust storage class to reflect type | |
| 345 */ | |
| 346 if (type.isConst()) | |
| 347 { storage_class |= STC.STCconst; | |
| 348 if (type.isShared()) | |
| 349 storage_class |= STC.STCshared; | |
| 350 } | |
| 135 | 351 else if (type.isImmutable()) |
| 0 | 352 storage_class |= STC.STCimmutable; |
| 353 else if (type.isShared()) | |
| 354 storage_class |= STC.STCshared; | |
| 135 | 355 else if (type.isWild()) |
| 356 storage_class |= STC.STCwild; | |
| 0 | 357 |
| 358 if (isSynchronized()) | |
| 359 { | |
| 360 error("variable %s cannot be synchronized", toChars()); | |
| 361 } | |
| 362 else if (isOverride()) | |
| 363 { | |
| 364 error("override cannot be applied to variable"); | |
| 365 } | |
| 366 else if (isAbstract()) | |
| 367 { | |
| 368 error("abstract cannot be applied to variable"); | |
| 369 } | |
| 370 else if (storage_class & STC.STCfinal) | |
| 371 { | |
| 372 error("final cannot be applied to variable"); | |
| 373 } | |
| 374 | |
| 375 if (storage_class & (STC.STCstatic | STC.STCextern | STC.STCmanifest | STC.STCtemplateparameter | STC.STCtls | STC.STCgshared)) | |
| 376 { | |
| 377 } | |
| 378 else | |
| 379 { | |
| 380 AggregateDeclaration aad = sc.anonAgg; | |
| 381 if (!aad) | |
| 382 aad = parent.isAggregateDeclaration(); | |
| 383 if (aad) | |
| 384 { | |
| 385 ///version (DMDV2) { | |
| 386 assert(!(storage_class & (STC.STCextern | STC.STCstatic | STC.STCtls | STC.STCgshared))); | |
| 387 | |
| 388 if (storage_class & (STC.STCconst | STC.STCimmutable) && init) | |
| 389 { | |
| 390 if (!type.toBasetype().isTypeBasic()) | |
| 391 storage_class |= STC.STCstatic; | |
| 392 } | |
| 393 else | |
| 394 ///} | |
| 395 aad.addField(sc, this); | |
| 396 } | |
| 397 | |
| 398 InterfaceDeclaration id = parent.isInterfaceDeclaration(); | |
| 399 if (id) | |
| 400 { | |
| 401 error("field not allowed in interface"); | |
| 402 } | |
| 403 | |
| 404 /* Templates cannot add fields to aggregates | |
| 405 */ | |
| 406 TemplateInstance ti = parent.isTemplateInstance(); | |
| 407 if (ti) | |
| 408 { | |
| 409 // Take care of nested templates | |
| 410 while (1) | |
| 411 { | |
| 412 TemplateInstance ti2 = ti.tempdecl.parent.isTemplateInstance(); | |
| 413 if (!ti2) | |
| 414 break; | |
| 415 ti = ti2; | |
| 416 } | |
| 417 | |
| 418 // If it's a member template | |
| 419 AggregateDeclaration ad = ti.tempdecl.isMember(); | |
| 420 if (ad && storage_class != STC.STCundefined) | |
| 421 { | |
| 422 error("cannot use template to add field to aggregate '%s'", ad.toChars()); | |
| 423 } | |
| 424 } | |
| 425 } | |
| 426 | |
| 427 version (DMDV2) { | |
| 428 if ((storage_class & (STC.STCref | STC.STCparameter | STC.STCforeach)) == STC.STCref && ident != Id.This) | |
| 429 { | |
| 430 error("only parameters or foreach declarations can be ref"); | |
| 431 } | |
| 135 | 432 |
| 433 if ((storage_class & (STCstatic | STCextern | STCtls | STCgshared | STCmanifest) || | |
| 434 isDataseg()) && | |
| 435 type.hasWild()) | |
| 436 { | |
| 437 error("only fields, parameters or stack based variables can be inout"); | |
| 438 } | |
| 0 | 439 } |
| 440 | |
| 441 if (type.isauto() && !noauto) | |
| 442 { | |
| 443 if (storage_class & (STC.STCfield | STC.STCout | STC.STCref | STC.STCstatic | STC.STCmanifest | STC.STCtls | STC.STCgshared) || !fd) | |
| 444 { | |
| 445 error("globals, statics, fields, manifest constants, ref and out parameters cannot be scope"); | |
| 446 } | |
| 447 | |
| 448 if (!(storage_class & (STC.STCauto | STC.STCscope))) | |
| 449 { | |
| 450 if (!(storage_class & STC.STCparameter) && ident != Id.withSym) | |
| 451 error("reference to scope class must be scope"); | |
| 452 } | |
| 453 } | |
| 454 | |
| 135 | 455 if ((isConst() || isImmutable()) && !init && !fd) |
| 0 | 456 { |
| 457 // Initialize by constructor only | |
| 458 storage_class |= STC.STCctorinit; | |
| 459 } | |
| 460 | |
| 461 if (init) | |
| 462 storage_class |= STC.STCinit; // remember we had an explicit initializer | |
| 463 else if (storage_class & STC.STCmanifest) | |
| 464 error("manifest constants must have initializers"); | |
| 465 | |
| 466 TOK op = TOK.TOKconstruct; | |
| 467 if (!init && !sc.inunion && !isStatic() && fd && | |
| 468 (!(storage_class & (STC.STCfield | STC.STCin | STC.STCforeach | STC.STCparameter)) || (storage_class & STC.STCout)) && | |
| 469 type.size() != 0) | |
| 470 { | |
| 179 | 471 // Provide a default initializer |
| 472 //printf("Providing default initializer for '%s'\n", toChars()); | |
| 473 if (type.ty == TY.Tstruct && | |
| 474 (cast(TypeStruct)type).sym.zeroInit) | |
| 475 { /* If a struct is all zeros, as a special case | |
| 476 * set it's initializer to the integer 0. | |
| 477 * In AssignExp.toElem(), we check for this and issue | |
| 478 * a memset() to initialize the struct. | |
| 479 * Must do same check in interpreter. | |
| 480 */ | |
| 481 Expression e = new IntegerExp(loc, 0, Type.tint32); | |
| 482 Expression e1; | |
| 483 e1 = new VarExp(loc, this); | |
| 484 e = new AssignExp(loc, e1, e); | |
| 485 e.op = TOK.TOKconstruct; | |
| 486 e.type = e1.type; // don't type check this, it would fail | |
| 487 init = new ExpInitializer(loc, e); | |
| 488 return; | |
| 489 } | |
| 490 else if (type.ty == TY.Ttypedef) | |
| 491 { | |
| 492 TypeTypedef td = cast(TypeTypedef)type; | |
| 493 if (td.sym.init) | |
| 494 { | |
| 495 init = td.sym.init; | |
| 496 ExpInitializer ie = init.isExpInitializer(); | |
| 497 if (ie) | |
| 498 // Make copy so we can modify it | |
| 499 init = new ExpInitializer(ie.loc, ie.exp); | |
| 500 } | |
| 501 else | |
| 502 init = getExpInitializer(); | |
| 0 | 503 } |
| 504 else | |
| 179 | 505 { |
| 506 init = getExpInitializer(); | |
| 507 } | |
| 508 // Default initializer is always a blit | |
| 509 op = TOK.TOKblit; | |
| 0 | 510 } |
| 511 | |
| 512 if (init) | |
| 513 { | |
| 179 | 514 sc = sc.push(); |
| 515 sc.stc &= ~(STC.STC_TYPECTOR | STC.STCpure | STC.STCnothrow | STC.STCref | STCdisable); | |
| 0 | 516 |
| 179 | 517 ArrayInitializer ai = init.isArrayInitializer(); |
| 518 if (ai && tb.ty == TY.Taarray) | |
| 0 | 519 { |
| 179 | 520 Expression e = ai.toAssocArrayLiteral(); |
| 521 init = new ExpInitializer(e.loc, e); | |
| 0 | 522 } |
| 523 | |
| 179 | 524 StructInitializer si = init.isStructInitializer(); |
| 525 ExpInitializer ei = init.isExpInitializer(); | |
| 0 | 526 |
| 179 | 527 // See if initializer is a NewExp that can be allocated on the stack |
| 528 if (ei && isScope() && ei.exp.op == TOK.TOKnew) | |
| 529 { NewExp ne = cast(NewExp)ei.exp; | |
| 530 if (!(ne.newargs && ne.newargs.dim)) | |
| 531 { ne.onstack = 1; | |
| 532 onstack = 1; | |
| 533 if (type.isBaseOf(ne.newtype.semantic(loc, sc), null)) | |
| 534 onstack = 2; | |
| 0 | 535 } |
| 536 } | |
| 179 | 537 |
| 538 // If inside function, there is no semantic3() call | |
| 539 if (sc.func) | |
| 0 | 540 { |
| 179 | 541 // If local variable, use AssignExp to handle all the various |
| 542 // possibilities. | |
| 543 if (fd && | |
| 544 !(storage_class & (STC.STCmanifest | STC.STCstatic | STC.STCtls | STC.STCgshared | STC.STCextern)) && | |
| 545 !init.isVoidInitializer()) | |
| 0 | 546 { |
| 179 | 547 //printf("fd = '%s', var = '%s'\n", fd.toChars(), toChars()); |
| 548 if (!ei) | |
| 549 { | |
| 550 Expression e = init.toExpression(); | |
| 551 if (!e) | |
| 552 { | |
| 553 init = init.semantic(sc, type); | |
| 554 e = init.toExpression(); | |
| 555 if (!e) | |
| 556 { error("is not a static and cannot have static initializer"); | |
| 0 | 557 return; |
| 558 } | |
| 559 } | |
| 179 | 560 ei = new ExpInitializer(init.loc, e); |
| 561 init = ei; | |
| 0 | 562 } |
| 179 | 563 |
| 564 Expression e1 = new VarExp(loc, this); | |
| 565 | |
| 566 Type t = type.toBasetype(); | |
| 567 if (t.ty == TY.Tsarray && !(storage_class & (STC.STCref | STC.STCout))) | |
| 73 | 568 { |
| 179 | 569 ei.exp = ei.exp.semantic(sc); |
| 570 if (!ei.exp.implicitConvTo(type)) | |
| 571 { | |
| 572 int dim = cast(int)(cast(TypeSArray)t).dim.toInteger(); /// | |
| 573 // If multidimensional static array, treat as one large array | |
| 574 while (1) | |
| 575 { | |
| 576 t = t.nextOf().toBasetype(); | |
| 577 if (t.ty != TY.Tsarray) | |
| 578 break; | |
| 579 dim *= (cast(TypeSArray)t).dim.toInteger(); | |
| 580 e1.type = new TypeSArray(t.nextOf(), new IntegerExp(Loc(0), dim, Type.tindex)); | |
| 581 } | |
| 582 } | |
| 583 e1 = new SliceExp(loc, e1, null, null); | |
| 584 } | |
| 585 else if (t.ty == TY.Tstruct) | |
| 586 { | |
| 587 ei.exp = ei.exp.semantic(sc); | |
| 588 ei.exp = resolveProperties(sc, ei.exp); | |
| 589 StructDeclaration sd = (cast(TypeStruct)t).sym; | |
| 590 version (DMDV2) | |
| 591 { | |
| 592 /* Look to see if initializer is a call to the constructor | |
| 593 */ | |
| 594 if (sd.ctor && // there are constructors | |
| 595 ei.exp.type.ty == TY.Tstruct && // rvalue is the same struct | |
| 596 (cast(TypeStruct)ei.exp.type).sym == sd && | |
| 597 ei.exp.op == TOK.TOKstar) | |
| 98 | 598 { |
| 179 | 599 /* Look for form of constructor call which is: |
| 600 * *__ctmp.ctor(arguments...) | |
| 73 | 601 */ |
| 179 | 602 PtrExp pe = cast(PtrExp)ei.exp; |
| 603 if (pe.e1.op == TOK.TOKcall) | |
| 604 { CallExp ce = cast(CallExp)pe.e1; | |
| 605 if (ce.e1.op == TOK.TOKdotvar) | |
| 606 { DotVarExp dve = cast(DotVarExp)ce.e1; | |
| 607 if (dve.var.isCtorDeclaration()) | |
| 608 { /* It's a constructor call, currently constructing | |
| 609 * a temporary __ctmp. | |
| 610 */ | |
| 611 /* Before calling the constructor, initialize | |
| 612 * variable with a bit copy of the default | |
| 613 * initializer | |
| 614 */ | |
| 615 Expression e = new AssignExp(loc, new VarExp(loc, this), t.defaultInit(loc)); | |
| 616 e.op = TOK.TOKblit; | |
| 617 e.type = t; | |
| 618 ei.exp = new CommaExp(loc, e, ei.exp); | |
| 98 | 619 |
| 179 | 620 /* Replace __ctmp being constructed with e1 |
| 621 */ | |
| 622 dve.e1 = e1; | |
| 623 return; | |
| 624 } | |
| 625 } | |
| 626 } | |
| 627 } | |
| 628 } | |
| 629 if (!ei.exp.implicitConvTo(type)) | |
| 630 { | |
| 631 Type ti = ei.exp.type.toBasetype(); | |
| 632 // Look for constructor first | |
| 633 if (sd.ctor && | |
| 634 /* Initializing with the same type is done differently | |
| 635 */ | |
| 636 !(ti.ty == Tstruct && t.toDsymbol(sc) == ti.toDsymbol(sc))) | |
| 637 { | |
| 638 // Rewrite as e1.ctor(arguments) | |
| 639 Expression ector = new DotIdExp(loc, e1, Id.ctor); | |
| 640 ei.exp = new CallExp(loc, ector, ei.exp); | |
| 641 } | |
| 642 else | |
| 643 /* Look for opCall | |
| 644 * See bugzilla 2702 for more discussion | |
| 73 | 645 */ |
| 179 | 646 |
| 647 // Don't cast away invariant or mutability in initializer | |
| 648 if (search_function(sd, Id.call) && | |
| 649 /* Initializing with the same type is done differently | |
| 650 */ | |
| 651 !(ti.ty == Tstruct && t.toDsymbol(sc) == ti.toDsymbol(sc))) | |
| 652 { // Rewrite as e1.call(arguments) | |
| 653 Expression eCall = new DotIdExp(loc, e1, Id.call); | |
| 654 ei.exp = new CallExp(loc, eCall, ei.exp); | |
| 655 } | |
| 73 | 656 } |
| 0 | 657 } |
| 179 | 658 ei.exp = new AssignExp(loc, e1, ei.exp); |
| 659 ei.exp.op = op; | |
| 660 canassign++; | |
| 661 ei.exp = ei.exp.semantic(sc); | |
| 662 canassign--; | |
| 663 ei.exp.optimize(WANT.WANTvalue); | |
| 664 } | |
| 665 else | |
| 666 { | |
| 667 init = init.semantic(sc, type); | |
| 668 } | |
| 0 | 669 } |
| 179 | 670 else if (storage_class & (STC.STCconst | STC.STCimmutable | STC.STCmanifest) || |
| 671 type.isConst() || type.isImmutable() || | |
| 672 parent.isAggregateDeclaration()) | |
| 0 | 673 { |
| 179 | 674 /* Because we may need the results of a const declaration in a |
| 675 * subsequent type, such as an array dimension, before semantic2() | |
| 676 * gets ordinarily run, try to run semantic2() now. | |
| 677 * Ignore failure. | |
| 678 */ | |
| 679 | |
| 680 if (!global.errors && !inferred) | |
| 681 { | |
| 682 uint errors = global.errors; | |
| 683 global.gag++; | |
| 684 //printf("+gag\n"); | |
| 685 Expression e; | |
| 686 Initializer i2 = init; | |
| 687 inuse++; | |
| 688 if (ei) | |
| 689 { | |
| 690 e = ei.exp.syntaxCopy(); | |
| 691 e = e.semantic(sc); | |
| 692 e = resolveProperties(sc, e); | |
| 693 version (DMDV2) { | |
| 694 /* The problem is the following code: | |
| 695 * struct CopyTest { | |
| 696 * double x; | |
| 697 * this(double a) { x = a * 10.0;} | |
| 698 * this(this) { x += 2.0; } | |
| 699 * } | |
| 700 * const CopyTest z = CopyTest(5.3); // ok | |
| 701 * const CopyTest w = z; // not ok, postblit not run | |
| 702 * static assert(w.x == 55.0); | |
| 703 * because the postblit doesn't get run on the initialization of w. | |
| 704 */ | |
| 0 | 705 |
| 179 | 706 Type tb_ = e.type.toBasetype(); |
| 707 if (tb_.ty == Tstruct) | |
| 708 { | |
| 709 StructDeclaration sd = (cast(TypeStruct)tb_).sym; | |
| 710 Type typeb = type.toBasetype(); | |
| 711 /* Look to see if initializer involves a copy constructor | |
| 712 * (which implies a postblit) | |
| 713 */ | |
| 714 if (sd.cpctor && // there is a copy constructor | |
| 715 typeb.equals(tb_)) // rvalue is the same struct | |
| 716 { | |
| 717 // The only allowable initializer is a (non-copy) constructor | |
| 718 if (e.op == TOKcall) | |
| 719 { | |
| 720 CallExp ce = cast(CallExp)e; | |
| 721 if (ce.e1.op == TOKdotvar) | |
| 722 { | |
| 723 DotVarExp dve = cast(DotVarExp)ce.e1; | |
| 724 if (dve.var.isCtorDeclaration()) | |
| 725 goto LNoCopyConstruction; | |
| 726 } | |
| 727 } | |
| 728 global.gag--; | |
| 729 error("of type struct %s uses this(this), which is not allowed in static initialization", typeb.toChars()); | |
| 730 global.gag++; | |
| 731 | |
| 732 LNoCopyConstruction: | |
| 733 ; | |
| 734 } | |
| 735 } | |
| 736 } | |
| 737 e = e.implicitCastTo(sc, type); | |
| 738 } | |
| 739 else if (si || ai) | |
| 740 { | |
| 741 i2 = init.syntaxCopy(); | |
| 742 i2 = i2.semantic(sc, type); | |
| 743 } | |
| 744 inuse--; | |
| 745 global.gag--; | |
| 746 //printf("-gag\n"); | |
| 747 if (errors != global.errors) // if errors happened | |
| 748 { | |
| 749 if (global.gag == 0) | |
| 750 global.errors = errors; // act as if nothing happened | |
| 751 version (DMDV2) { | |
| 752 /* Save scope for later use, to try again | |
| 753 */ | |
| 754 scope_ = sc.clone(); | |
| 755 scope_.setNoFree(); | |
| 756 } | |
| 757 } | |
| 758 else if (ei) | |
| 759 { | |
| 760 if (isDataseg()) | |
| 761 /* static const/invariant does CTFE | |
| 762 */ | |
| 763 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 764 else | |
| 765 e = e.optimize(WANT.WANTvalue); | |
| 766 if (e.op == TOK.TOKint64 || e.op == TOK.TOKstring || e.op == TOK.TOKfloat64) | |
| 767 { | |
| 768 ei.exp = e; // no errors, keep result | |
| 769 } | |
| 770 ///version (DMDV2) { | |
| 771 else | |
| 772 { | |
| 773 /* Save scope for later use, to try again | |
| 774 */ | |
| 775 scope_ = sc.clone(); | |
| 776 scope_.setNoFree(); | |
| 777 } | |
| 778 ///} | |
| 779 } | |
| 780 else | |
| 781 init = i2; // no errors, keep result | |
| 782 } | |
| 0 | 783 } |
| 179 | 784 sc = sc.pop(); |
| 0 | 785 } |
| 786 } | |
| 787 | |
| 72 | 788 override void semantic2(Scope sc) |
| 0 | 789 { |
| 790 //printf("VarDeclaration.semantic2('%s')\n", toChars()); | |
| 791 if (init && !toParent().isFuncDeclaration()) | |
| 792 { | |
| 793 inuse++; | |
| 794 static if (false) { | |
| 795 ExpInitializer ei = init.isExpInitializer(); | |
| 796 if (ei) | |
| 797 { | |
| 798 ei.exp.dump(0); | |
| 799 printf("type = %p\n", ei.exp.type); | |
| 800 } | |
| 801 } | |
| 802 init = init.semantic(sc, type); | |
| 803 inuse--; | |
| 804 } | |
| 805 } | |
| 806 | |
| 72 | 807 override string kind() |
| 0 | 808 { |
| 809 return "variable"; | |
| 810 } | |
| 811 | |
| 72 | 812 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 813 { |
|
68
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814 StorageClassDeclaration.stcToCBuffer(buf, storage_class); |
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815 |
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816 /* If changing, be sure and fix CompoundDeclarationStatement.toCBuffer() |
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817 * too. |
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818 */ |
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819 if (type) |
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820 type.toCBuffer(buf, ident, hgs); |
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821 else |
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822 buf.writestring(ident.toChars()); |
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823 if (init) |
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824 { |
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825 buf.writestring(" = "); |
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826 ///version (DMDV2) { |
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827 ExpInitializer ie = init.isExpInitializer(); |
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828 if (ie && (ie.exp.op == TOKconstruct || ie.exp.op == TOKblit)) |
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829 (cast(AssignExp)ie.exp).e2.toCBuffer(buf, hgs); |
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830 else |
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831 ///} |
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832 init.toCBuffer(buf, hgs); |
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833 } |
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834 buf.writeByte(';'); |
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835 buf.writenl(); |
| 0 | 836 } |
| 837 | |
| 838 version (_DH) { | |
| 839 Type htype; | |
| 840 Initializer hinit; | |
| 841 } | |
| 72 | 842 override bool needThis() |
| 0 | 843 { |
| 844 //printf("VarDeclaration.needThis(%s, x%x)\n", toChars(), storage_class); | |
| 845 return (storage_class & STC.STCfield) != 0; | |
| 846 } | |
| 847 | |
| 72 | 848 override bool isImportedSymbol() |
| 0 | 849 { |
| 850 if (protection == PROT.PROTexport && !init && (storage_class & STC.STCstatic || parent.isModule())) | |
| 851 return true; | |
| 852 | |
| 853 return false; | |
| 854 } | |
| 855 | |
| 72 | 856 override bool isDataseg() |
| 0 | 857 { |
| 858 static if (false) { | |
| 859 printf("VarDeclaration.isDataseg(%p, '%s')\n", this, toChars()); | |
| 135 | 860 printf("%llx, isModule: %p, isTemplateInstance: %p\n", storage_class & (STC.STCstatic | STC.STCconst), parent.isModule(), parent.isTemplateInstance()); |
| 0 | 861 printf("parent = '%s'\n", parent.toChars()); |
| 862 } | |
| 863 if (storage_class & STC.STCmanifest) | |
| 864 return false; | |
| 865 | |
| 866 Dsymbol parent = this.toParent(); | |
| 867 if (!parent && !(storage_class & STC.STCstatic)) | |
| 868 { | |
| 869 error("forward referenced"); | |
| 870 type = Type.terror; | |
| 871 return false; | |
| 872 } | |
| 873 | |
| 874 return canTakeAddressOf() && (storage_class & (STC.STCstatic | STC.STCextern | STC.STCtls | STC.STCgshared) || toParent().isModule() || toParent().isTemplateInstance()); | |
| 875 } | |
| 876 | |
| 72 | 877 override bool isThreadlocal() |
| 0 | 878 { |
| 879 //printf("VarDeclaration.isThreadlocal(%p, '%s')\n", this, toChars()); | |
| 880 static if (false) { /// || TARGET_OSX | |
| 881 /* To be thread-local, must use the __thread storage class. | |
| 882 * BUG: OSX doesn't support thread local yet. | |
| 883 */ | |
| 884 return isDataseg() && (storage_class & (STC.STCtls | STC.STCconst | STC.STCimmutable | STC.STCshared | STC.STCgshared)) == STC.STCtls; | |
| 885 } else { | |
| 886 /* Data defaults to being thread-local. It is not thread-local | |
| 887 * if it is immutable, const or shared. | |
| 888 */ | |
| 889 bool i = isDataseg() && !(storage_class & (STC.STCimmutable | STC.STCconst | STC.STCshared | STC.STCgshared)); | |
| 890 //printf("\treturn %d\n", i); | |
| 891 return i; | |
| 892 } | |
| 893 } | |
| 894 | |
| 135 | 895 /******************************************** |
| 896 * Can variable be read and written by CTFE? | |
| 897 */ | |
| 898 | |
| 899 int isCTFE() | |
| 900 { | |
| 901 return (storage_class & STCctfe) || !isDataseg(); | |
| 902 } | |
| 903 | |
| 72 | 904 override bool hasPointers() |
| 0 | 905 { |
| 906 //printf("VarDeclaration.hasPointers() %s, ty = %d\n", toChars(), type.ty); | |
| 907 return (!isDataseg() && type.hasPointers()); | |
| 908 } | |
| 909 | |
| 910 version (DMDV2) { | |
| 911 bool canTakeAddressOf() | |
| 912 { | |
| 913 static if (false) { | |
| 914 /* Global variables and struct/class fields of the form: | |
| 915 * const int x = 3; | |
| 916 * are not stored and hence cannot have their address taken. | |
| 917 */ | |
| 135 | 918 if ((isConst() || isImmutable()) && (storage_class & STC.STCinit) && (!(storage_class & (STC.STCstatic | STC.STCextern)) || (storage_class & STC.STCfield)) && |
| 0 | 919 (!parent || toParent().isModule() || toParent().isTemplateInstance()) && type.toBasetype().isTypeBasic()) |
| 920 { | |
| 921 return false; | |
| 922 } | |
| 923 } else { | |
| 924 if (storage_class & STC.STCmanifest) | |
| 925 return false; | |
| 926 } | |
| 927 return true; | |
| 928 } | |
| 929 | |
|
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930 /****************************************** |
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931 * Return TRUE if variable needs to call the destructor. |
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932 */ |
|
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933 bool needsAutoDtor() |
| 0 | 934 { |
|
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935 //printf("VarDeclaration.needsAutoDtor() %s\n", toChars()); |
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936 |
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937 if (noauto || storage_class & STCnodtor) |
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938 return false; |
|
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939 |
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940 // Destructors for structs and arrays of structs |
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941 Type tv = type.toBasetype(); |
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942 while (tv.ty == Tsarray) |
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943 { |
|
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944 TypeSArray ta = cast(TypeSArray)tv; |
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945 tv = tv.nextOf().toBasetype(); |
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946 } |
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947 if (tv.ty == Tstruct) |
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948 { |
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949 TypeStruct ts = cast(TypeStruct)tv; |
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950 StructDeclaration sd = ts.sym; |
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951 if (sd.dtor) |
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952 return true; |
|
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|
953 } |
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|
954 |
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955 // Destructors for classes |
|
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|
956 if (storage_class & (STCauto | STCscope)) |
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957 { |
|
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|
958 if (type.isClassHandle()) |
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959 return true; |
|
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|
960 } |
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|
961 return false; |
| 0 | 962 } |
| 963 } | |
| 964 | |
| 965 /****************************************** | |
| 966 * If a variable has an auto destructor call, return call for it. | |
| 967 * Otherwise, return null. | |
| 968 */ | |
| 969 Expression callAutoDtor(Scope sc) | |
| 970 { | |
| 971 Expression e = null; | |
| 972 | |
| 973 //printf("VarDeclaration.callAutoDtor() %s\n", toChars()); | |
| 974 | |
| 975 if (noauto || storage_class & STC.STCnodtor) | |
| 976 return null; | |
| 977 | |
| 978 // Destructors for structs and arrays of structs | |
| 979 bool array = false; | |
| 980 Type tv = type.toBasetype(); | |
| 981 while (tv.ty == TY.Tsarray) | |
| 982 { | |
| 983 TypeSArray ta = cast(TypeSArray)tv; | |
| 984 array = true; | |
| 985 tv = tv.nextOf().toBasetype(); | |
| 986 } | |
| 987 if (tv.ty == TY.Tstruct) | |
| 988 { | |
| 989 TypeStruct ts = cast(TypeStruct)tv; | |
| 990 StructDeclaration sd = ts.sym; | |
| 991 if (sd.dtor) | |
| 992 { | |
| 993 if (array) | |
| 994 { | |
| 995 // Typeinfo.destroy(cast(void*)&v); | |
| 996 Expression ea = new SymOffExp(loc, this, 0, 0); | |
| 997 ea = new CastExp(loc, ea, Type.tvoid.pointerTo()); | |
| 998 Expressions args = new Expressions(); | |
|
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|
999 args.push(ea); |
| 0 | 1000 |
| 1001 Expression et = type.getTypeInfo(sc); | |
| 1002 et = new DotIdExp(loc, et, Id.destroy); | |
| 1003 | |
| 1004 e = new CallExp(loc, et, args); | |
| 1005 } | |
| 1006 else | |
| 1007 { | |
| 1008 e = new VarExp(loc, this); | |
| 1009 e = new DotVarExp(loc, e, sd.dtor, 0); | |
| 1010 e = new CallExp(loc, e); | |
| 1011 } | |
| 1012 return e; | |
| 1013 } | |
| 1014 } | |
| 1015 | |
| 1016 // Destructors for classes | |
| 1017 if (storage_class & (STC.STCauto | STC.STCscope)) | |
| 1018 { | |
| 1019 for (ClassDeclaration cd = type.isClassHandle(); cd; cd = cd.baseClass) | |
| 1020 { | |
| 1021 /* We can do better if there's a way with onstack | |
| 1022 * classes to determine if there's no way the monitor | |
| 1023 * could be set. | |
| 1024 */ | |
| 1025 //if (cd.isInterfaceDeclaration()) | |
| 1026 //error("interface %s cannot be scope", cd.toChars()); | |
| 1027 if (1 || onstack || cd.dtors.dim) // if any destructors | |
| 1028 { | |
| 1029 // delete this; | |
| 1030 Expression ec = new VarExp(loc, this); | |
| 1031 e = new DeleteExp(loc, ec); | |
| 1032 e.type = Type.tvoid; | |
| 1033 break; | |
| 1034 } | |
| 1035 } | |
| 1036 } | |
| 1037 return e; | |
| 1038 } | |
| 1039 | |
| 1040 /**************************** | |
| 1041 * Get ExpInitializer for a variable, if there is one. | |
| 1042 */ | |
| 1043 ExpInitializer getExpInitializer() | |
| 1044 { | |
| 1045 ExpInitializer ei; | |
| 1046 | |
| 1047 if (init) | |
| 1048 ei = init.isExpInitializer(); | |
| 1049 else | |
| 1050 { | |
| 1051 Expression e = type.defaultInit(loc); | |
| 1052 if (e) | |
| 1053 ei = new ExpInitializer(loc, e); | |
| 1054 else | |
| 1055 ei = null; | |
| 1056 } | |
| 1057 return ei; | |
| 1058 } | |
| 1059 | |
| 1060 /******************************************* | |
| 1061 * If variable has a constant expression initializer, get it. | |
| 1062 * Otherwise, return null. | |
| 1063 */ | |
| 1064 Expression getConstInitializer() | |
| 1065 { | |
| 135 | 1066 if ((isConst() || isImmutable() || storage_class & STC.STCmanifest) && storage_class & STC.STCinit) |
| 0 | 1067 { |
| 1068 ExpInitializer ei = getExpInitializer(); | |
| 1069 if (ei) | |
| 1070 return ei.exp; | |
| 1071 } | |
| 1072 | |
| 1073 return null; | |
| 1074 } | |
| 1075 | |
| 72 | 1076 override void checkCtorConstInit() |
| 0 | 1077 { |
| 1078 static if (false) { /* doesn't work if more than one static ctor */ | |
| 1079 if (ctorinit == 0 && isCtorinit() && !(storage_class & STCfield)) | |
| 1080 error("missing initializer in static constructor for const variable"); | |
| 1081 } | |
| 1082 } | |
| 1083 | |
| 1084 /************************************ | |
| 1085 * Check to see if this variable is actually in an enclosing function | |
| 1086 * rather than the current one. | |
| 1087 */ | |
| 1088 void checkNestedReference(Scope sc, Loc loc) | |
| 1089 { | |
| 1090 if (parent && !isDataseg() && parent != sc.parent && !(storage_class & STC.STCmanifest)) | |
| 1091 { | |
| 1092 // The function that this variable is in | |
| 1093 FuncDeclaration fdv = toParent().isFuncDeclaration(); | |
| 1094 // The current function | |
| 1095 FuncDeclaration fdthis = sc.parent.isFuncDeclaration(); | |
| 1096 | |
| 1097 if (fdv && fdthis && fdv !is fdthis) | |
| 1098 { | |
| 1099 if (loc.filename) | |
| 1100 fdthis.getLevel(loc, fdv); | |
| 1101 | |
|
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|
1102 foreach (f; nestedrefs) |
| 0 | 1103 { |
| 1104 if (f == fdthis) | |
| 1105 goto L1; | |
| 1106 } | |
|
74
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73
diff
changeset
|
1107 nestedrefs.push(fdthis); |
| 0 | 1108 L1: ; |
| 1109 | |
|
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diff
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|
1110 foreach (s; fdv.closureVars) |
| 0 | 1111 { |
| 1112 if (s == this) | |
| 1113 goto L2; | |
| 1114 } | |
| 1115 | |
|
74
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Eldar Insafutdinov <e.insafutdinov@gmail.com>
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73
diff
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|
1116 fdv.closureVars.push(this); |
| 0 | 1117 L2: ; |
| 1118 | |
| 1119 //printf("fdthis is %s\n", fdthis.toChars()); | |
| 1120 //printf("var %s in function %s is nested ref\n", toChars(), fdv.toChars()); | |
| 1121 } | |
| 1122 } | |
| 1123 } | |
| 1124 | |
| 72 | 1125 override Dsymbol toAlias() |
| 0 | 1126 { |
| 1127 //printf("VarDeclaration::toAlias('%s', this = %p, aliassym = %p)\n", toChars(), this, aliassym); | |
| 1128 assert(this !is aliassym); | |
| 1129 return aliassym ? aliassym.toAlias() : this; | |
| 1130 } | |
| 1131 | |
| 72 | 1132 override Symbol* toSymbol() |
| 0 | 1133 { |
| 1134 //printf("VarDeclaration.toSymbol(%s)\n", toChars()); | |
| 1135 //if (needThis()) *(char*)0=0; | |
| 1136 assert(!needThis()); | |
| 1137 if (!csym) | |
| 1138 { | |
| 1139 Symbol* s; | |
| 1140 TYPE* t; | |
| 1141 string id; | |
| 1142 | |
| 1143 if (isDataseg()) | |
| 1144 id = mangle(); | |
| 1145 else | |
| 1146 id = ident.toChars(); | |
| 1147 | |
| 1148 s = symbol_calloc(toStringz(id)); | |
| 1149 | |
| 1150 if (storage_class & (STC.STCout | STC.STCref)) | |
| 1151 { | |
| 1152 if (global.params.symdebug && storage_class & STC.STCparameter) | |
| 1153 { | |
| 1154 t = type_alloc(TYM.TYnptr); // should be TYref, but problems in back end | |
| 1155 t.Tnext = type.toCtype(); | |
| 1156 t.Tnext.Tcount++; | |
| 1157 } | |
| 1158 else | |
| 1159 t = type_fake(TYM.TYnptr); | |
| 1160 } | |
| 1161 else if (storage_class & STC.STClazy) | |
| 1162 t = type_fake(TYM.TYdelegate); // Tdelegate as C type | |
| 1163 else if (isParameter()) | |
| 1164 t = type.toCParamtype(); | |
| 1165 else | |
| 1166 t = type.toCtype(); | |
| 1167 | |
| 1168 t.Tcount++; | |
| 1169 | |
| 1170 if (isDataseg()) | |
| 1171 { | |
| 1172 if (isThreadlocal()) | |
| 1173 { | |
| 1174 /* Thread local storage | |
| 1175 */ | |
| 1176 TYPE* ts = t; | |
| 1177 ts.Tcount++; // make sure a different t is allocated | |
| 1178 type_setty(&t, t.Tty | mTY.mTYthread); | |
| 1179 ts.Tcount--; | |
| 1180 | |
| 1181 if (global.params.vtls) | |
| 1182 { | |
| 1183 string p = loc.toChars(); | |
| 1184 writef("%s: %s is thread local\n", p ? p : "", toChars()); | |
| 1185 } | |
| 1186 } | |
| 1187 | |
| 1188 s.Sclass = SC.SCextern; | |
| 1189 s.Sfl = FL.FLextern; | |
| 1190 slist_add(s); | |
| 1191 } | |
| 1192 else | |
| 1193 { | |
| 1194 s.Sclass = SC.SCauto; | |
| 1195 s.Sfl = FL.FLauto; | |
| 1196 | |
| 1197 if (nestedrefs.dim) | |
| 1198 { | |
| 1199 /* Symbol is accessed by a nested function. Make sure | |
| 1200 * it is not put in a register, and that the optimizer | |
| 1201 * assumes it is modified across function calls and pointer | |
| 1202 * dereferences. | |
| 1203 */ | |
| 1204 //printf("\tnested ref, not register\n"); | |
| 1205 type_setcv(&t, t.Tty | mTY.mTYvolatile); | |
| 1206 } | |
| 1207 } | |
| 1208 | |
| 1209 mangle_t m = 0; | |
| 1210 switch (linkage) | |
| 1211 { | |
| 1212 case LINK.LINKwindows: | |
| 1213 m = mTYman.mTYman_std; | |
| 1214 break; | |
| 1215 | |
| 1216 case LINK.LINKpascal: | |
| 1217 m = mTYman.mTYman_pas; | |
| 1218 break; | |
| 1219 | |
| 1220 case LINK.LINKc: | |
| 1221 m = mTYman.mTYman_c; | |
| 1222 break; | |
| 1223 | |
| 1224 case LINK.LINKd: | |
| 1225 m = mTYman.mTYman_d; | |
| 1226 break; | |
| 1227 | |
| 1228 case LINK.LINKcpp: | |
| 1229 m = mTYman.mTYman_cpp; | |
| 1230 break; | |
| 1231 | |
| 1232 default: | |
| 1233 writef("linkage = %d\n", linkage); | |
| 1234 assert(0); | |
| 1235 } | |
| 1236 type_setmangle(&t, m); | |
| 1237 s.Stype = t; | |
| 1238 | |
| 1239 csym = s; | |
| 1240 } | |
| 1241 return csym; | |
| 1242 } | |
| 1243 | |
| 72 | 1244 override void toObjFile(int multiobj) // compile to .obj file |
| 0 | 1245 { |
| 1246 Symbol* s; | |
| 1247 uint sz; | |
| 1248 Dsymbol parent; | |
| 1249 | |
| 1250 //printf("VarDeclaration.toObjFile(%p '%s' type=%s) protection %d\n", this, toChars(), type.toChars(), protection); | |
| 1251 //printf("\talign = %d\n", type.alignsize()); | |
| 1252 | |
| 1253 if (aliassym) | |
| 1254 { | |
| 1255 toAlias().toObjFile(0); | |
| 1256 return; | |
| 1257 } | |
| 1258 | |
| 1259 version (DMDV2) { | |
| 1260 // Do not store variables we cannot take the address of | |
| 1261 if (!canTakeAddressOf()) | |
| 1262 { | |
| 1263 return; | |
| 1264 } | |
| 1265 } | |
| 1266 | |
| 1267 if (isDataseg() && !(storage_class & STC.STCextern)) | |
| 1268 { | |
| 1269 s = toSymbol(); | |
| 1270 sz = cast(uint)type.size(); | |
| 1271 | |
| 1272 parent = this.toParent(); | |
| 1273 /// version (DMDV1) { /* private statics should still get a global symbol, in case | |
| 1274 /// * another module inlines a function that references it. | |
| 1275 /// */ | |
| 1276 /// if (/*protection == PROT.PROTprivate ||*/ | |
| 1277 /// !parent || parent.ident == null || parent.isFuncDeclaration()) | |
| 1278 /// { | |
| 1279 /// s.Sclass = SC.SCstatic; | |
| 1280 /// } | |
| 1281 /// else | |
| 1282 /// } | |
| 1283 { | |
| 1284 if (storage_class & STC.STCcomdat) | |
| 1285 s.Sclass = SC.SCcomdat; | |
| 1286 else | |
| 1287 s.Sclass = SC.SCglobal; | |
| 1288 | |
| 1289 do | |
| 1290 { | |
| 1291 /* Global template data members need to be in comdat's | |
| 1292 * in case multiple .obj files instantiate the same | |
| 1293 * template with the same types. | |
| 1294 */ | |
| 1295 if (parent.isTemplateInstance() && !parent.isTemplateMixin()) | |
| 1296 { | |
| 1297 version (DMDV1) { | |
| 1298 /* These symbol constants have already been copied, | |
| 1299 * so no reason to output them. | |
| 1300 * Note that currently there is no way to take | |
| 1301 * the address of such a const. | |
| 1302 */ | |
| 1303 if (isConst() && type.toBasetype().ty != TY.Tsarray && init && init.isExpInitializer()) | |
| 1304 return; | |
| 1305 } | |
| 1306 s.Sclass = SC.SCcomdat; | |
| 1307 break; | |
| 1308 } | |
| 1309 parent = parent.parent; | |
| 1310 } while (parent); | |
| 1311 } | |
| 1312 | |
| 1313 s.Sfl = FL.FLdata; | |
| 1314 | |
| 1315 if (init) | |
| 1316 { | |
| 1317 s.Sdt = init.toDt(); | |
| 1318 | |
| 1319 // Look for static array that is block initialized | |
| 1320 Type tb; | |
| 1321 ExpInitializer ie = init.isExpInitializer(); | |
| 1322 | |
| 1323 tb = type.toBasetype(); | |
| 1324 if (tb.ty == TY.Tsarray && ie | |
| 1325 && !tb.nextOf().equals(ie.exp.type.toBasetype().nextOf()) | |
| 1326 && ie.exp.implicitConvTo(tb.nextOf())) | |
| 1327 { | |
| 1328 int dim = cast(int)(cast(TypeSArray)tb).dim.toInteger(); | |
| 1329 | |
| 1330 // Duplicate Sdt 'dim-1' times, as we already have the first one | |
| 1331 while (--dim > 0) | |
| 1332 { | |
| 1333 ie.exp.toDt(&s.Sdt); | |
| 1334 } | |
| 1335 } | |
| 1336 } | |
| 1337 else if (storage_class & STC.STCextern) | |
| 1338 { | |
| 1339 s.Sclass = SC.SCextern; | |
| 1340 s.Sfl = FL.FLextern; | |
| 1341 s.Sdt = null; | |
| 1342 // BUG: if isExport(), shouldn't we make it dllimport? | |
| 1343 return; | |
| 1344 } | |
| 1345 else | |
| 1346 { | |
| 1347 type.toDt(&s.Sdt); | |
| 1348 } | |
| 1349 dt_optimize(s.Sdt); | |
| 1350 | |
| 1351 // See if we can convert a comdat to a comdef, | |
| 1352 // which saves on exe file space. | |
| 1353 if (s.Sclass == SC.SCcomdat && | |
| 1354 s.Sdt && | |
| 1355 s.Sdt.dt == DT.DT_azeros && | |
| 1356 s.Sdt.DTnext is null && | |
| 1357 !isThreadlocal()) | |
| 1358 { | |
| 1359 s.Sclass = SC.SCglobal; | |
| 1360 s.Sdt.dt = DT.DT_common; | |
| 1361 } | |
| 1362 | |
| 1363 version (ELFOBJ_OR_MACHOBJ) { // Burton | |
| 1364 if (s.Sdt && s.Sdt.dt == DT.DT_azeros && s.Sdt.DTnext is null) | |
| 1365 s.Sseg = Segment.UDATA; | |
| 1366 else | |
| 1367 s.Sseg = Segment.DATA; | |
| 1368 } | |
| 1369 if (sz) | |
| 1370 { | |
| 1371 outdata(s); | |
| 1372 if (isExport()) | |
| 1373 obj_export(s, 0); | |
| 1374 } | |
| 1375 } | |
| 1376 } | |
| 1377 | |
| 72 | 1378 override int cvMember(ubyte* p) |
| 0 | 1379 { |
| 1380 assert(false); | |
| 1381 } | |
| 1382 | |
| 1383 // Eliminate need for dynamic_cast | |
| 72 | 1384 override VarDeclaration isVarDeclaration() { return this; } |
|
16
5c9b78899f5d
Implemented methods for Tuples, fixed some linking issues.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1385 } |
|
84
be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
77
diff
changeset
|
1386 |
|
be2ab491772e
Expressions -> Vector!Expression
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
77
diff
changeset
|
1387 alias Vector!VarDeclaration VarDeclarations; |