Mercurial > projects > ddmd
annotate dmd/TemplateInstance.d @ 77:ad4792a1cfd6
more D-ification container accessing
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Sun, 29 Aug 2010 14:36:55 +0100 |
| parents | 7e0d548de9e6 |
| children | 43073c7c7769 |
| rev | line source |
|---|---|
| 0 | 1 module dmd.TemplateInstance; |
| 2 | |
| 3 import dmd.ScopeDsymbol; | |
| 4 import dmd.IntegerExp; | |
| 5 import dmd.Identifier; | |
| 6 import dmd.ArrayTypes; | |
| 7 import dmd.TupleDeclaration; | |
| 8 import dmd.TemplateParameter; | |
| 9 import dmd.AliasDeclaration; | |
| 10 import dmd.TemplateDeclaration; | |
| 11 import dmd.TupleExp; | |
| 12 import dmd.WithScopeSymbol; | |
| 13 import dmd.Dsymbol; | |
| 14 import dmd.Module; | |
| 15 import dmd.ArrayTypes; | |
| 16 import dmd.Loc; | |
| 17 import dmd.Global; | |
| 18 import dmd.Util; | |
| 19 import dmd.Type; | |
| 20 import dmd.Expression; | |
| 21 import dmd.Tuple; | |
| 22 import dmd.STC; | |
| 23 import dmd.TOK; | |
| 24 import dmd.TY; | |
| 25 import dmd.TypeTuple; | |
| 26 import dmd.Argument; | |
| 27 import dmd.WANT; | |
| 28 import dmd.ExpInitializer; | |
| 29 import dmd.Array; | |
| 30 import dmd.DsymbolTable; | |
| 31 import dmd.Scope; | |
| 32 import dmd.OutBuffer; | |
| 33 import dmd.HdrGenState; | |
| 34 import dmd.VarDeclaration; | |
| 35 import dmd.VarExp; | |
| 36 import dmd.FuncExp; | |
| 37 import dmd.Declaration; | |
| 38 import dmd.MATCH; | |
|
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39 import dmd.templates.Util; |
| 0 | 40 |
| 41 import dmd.backend.glue; | |
| 42 | |
| 43 Tuple isTuple(Object o) | |
| 44 { | |
| 45 //return dynamic_cast<Tuple *>(o); | |
| 46 ///if (!o || o.dyncast() != DYNCAST_TUPLE) | |
| 47 /// return null; | |
| 48 return cast(Tuple)o; | |
| 49 } | |
| 50 | |
| 51 /****************************** | |
| 52 * If o1 matches o2, return 1. | |
| 53 * Else, return 0. | |
| 54 */ | |
| 55 | |
| 56 bool match(Object o1, Object o2, TemplateDeclaration tempdecl, Scope sc) | |
| 57 { | |
| 58 Type t1 = isType(o1); | |
| 59 Type t2 = isType(o2); | |
| 60 Expression e1 = isExpression(o1); | |
| 61 Expression e2 = isExpression(o2); | |
| 62 Dsymbol s1 = isDsymbol(o1); | |
| 63 Dsymbol s2 = isDsymbol(o2); | |
| 64 Tuple v1 = isTuple(o1); | |
| 65 Tuple v2 = isTuple(o2); | |
| 66 | |
| 67 //printf("\t match t1 %p t2 %p, e1 %p e2 %p, s1 %p s2 %p, v1 %p v2 %p\n", t1,t2,e1,e2,s1,s2,v1,v2); | |
| 68 | |
| 69 /* A proper implementation of the various equals() overrides | |
| 70 * should make it possible to just do o1.equals(o2), but | |
| 71 * we'll do that another day. | |
| 72 */ | |
| 73 | |
| 74 if (t1) | |
| 75 { | |
| 76 /* if t1 is an instance of ti, then give error | |
| 77 * about recursive expansions. | |
| 78 */ | |
| 79 Dsymbol s = t1.toDsymbol(sc); | |
| 80 if (s && s.parent) | |
| 81 { | |
| 82 TemplateInstance ti1 = s.parent.isTemplateInstance(); | |
| 83 if (ti1 && ti1.tempdecl == tempdecl) | |
| 84 { | |
| 85 for (Scope sc1 = sc; sc1; sc1 = sc1.enclosing) | |
| 86 { | |
| 87 if (sc1.scopesym == ti1) | |
| 88 { | |
| 89 error("recursive template expansion for template argument %s", t1.toChars()); | |
| 90 return true; // fake a match | |
| 91 } | |
| 92 } | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 //printf("t1 = %s\n", t1.toChars()); | |
| 97 //printf("t2 = %s\n", t2.toChars()); | |
| 98 if (!t2 || !t1.equals(t2)) | |
| 99 goto Lnomatch; | |
| 100 } | |
| 101 else if (e1) | |
| 102 { | |
| 103 static if (false) { | |
| 104 if (e1 && e2) | |
| 105 { | |
| 106 printf("match %d\n", e1.equals(e2)); | |
| 107 e1.print(); | |
| 108 e2.print(); | |
| 109 e1.type.print(); | |
| 110 e2.type.print(); | |
| 111 } | |
| 112 } | |
| 113 if (!e2) | |
| 114 goto Lnomatch; | |
| 115 if (!e1.equals(e2)) | |
| 116 goto Lnomatch; | |
| 117 } | |
| 118 else if (s1) | |
| 119 { | |
| 120 //printf("%p %s, %p %s\n", s1, s1.toChars(), s2, s2.toChars()); | |
| 121 if (!s2 || !s1.equals(s2) || s1.parent != s2.parent) | |
| 122 { | |
| 123 goto Lnomatch; | |
| 124 } | |
| 125 version (DMDV2) { | |
| 126 VarDeclaration vv1 = s1.isVarDeclaration(); | |
| 127 VarDeclaration vv2 = s2.isVarDeclaration(); | |
| 128 if (vv1 && vv2 && vv1.storage_class & vv2.storage_class & STCmanifest) | |
| 129 { | |
| 130 ExpInitializer ei1 = vv1.init.isExpInitializer(); | |
| 131 ExpInitializer ei2 = vv2.init.isExpInitializer(); | |
| 132 if (ei1 && ei2 && !ei1.exp.equals(ei2.exp)) | |
| 133 goto Lnomatch; | |
| 134 } | |
| 135 } | |
| 136 } | |
| 137 else if (v1) | |
| 138 { | |
| 139 if (!v2) | |
| 140 goto Lnomatch; | |
| 141 | |
| 142 if (v1.objects.dim != v2.objects.dim) | |
| 143 goto Lnomatch; | |
| 144 | |
| 145 for (size_t i = 0; i < v1.objects.dim; i++) | |
| 146 { | |
| 147 if (!match(cast(Object)v1.objects.data[i], cast(Object)v2.objects.data[i], tempdecl, sc)) | |
| 148 goto Lnomatch; | |
| 149 } | |
| 150 } | |
| 151 //printf("match\n"); | |
| 152 return true; // match | |
| 153 | |
| 154 Lnomatch: | |
| 155 //printf("nomatch\n"); | |
| 156 return false; // nomatch; | |
| 157 } | |
| 158 | |
| 159 class TemplateInstance : ScopeDsymbol | |
| 160 { | |
| 161 /* Given: | |
| 162 * foo!(args) => | |
| 163 * name = foo | |
| 164 * tiargs = args | |
| 165 */ | |
| 166 Identifier name; | |
| 167 //Array idents; | |
| 168 Objects tiargs; // Array of Types/Expressions of template | |
| 169 // instance arguments [int*, char, 10*10] | |
| 170 | |
| 171 Objects tdtypes; // Array of Types/Expressions corresponding | |
| 172 // to TemplateDeclaration.parameters | |
| 173 // [int, char, 100] | |
| 174 | |
| 175 TemplateDeclaration tempdecl; // referenced by foo.bar.abc | |
| 176 TemplateInstance inst; // refer to existing instance | |
| 177 TemplateInstance tinst; // enclosing template instance | |
| 178 ScopeDsymbol argsym; // argument symbol table | |
| 179 AliasDeclaration aliasdecl; // !=null if instance is an alias for its | |
| 180 // sole member | |
| 181 WithScopeSymbol withsym; // if a member of a with statement | |
| 182 int semanticRun; // has semantic() been done? | |
| 183 int semantictiargsdone; // has semanticTiargs() been done? | |
| 184 int nest; // for recursion detection | |
| 185 int havetempdecl; // 1 if used second constructor | |
| 186 Dsymbol isnested; // if referencing local symbols, this is the context | |
| 187 int errors; // 1 if compiled with errors | |
| 188 version (IN_GCC) { | |
| 189 /* On some targets, it is necessary to know whether a symbol | |
| 190 will be emitted in the output or not before the symbol | |
| 191 is used. This can be different from getModule(). */ | |
| 192 Module objFileModule; | |
| 193 } | |
| 194 | |
| 195 this(Loc loc, Identifier ident) | |
| 196 { | |
| 197 super(null); | |
| 198 | |
| 199 version (LOG) { | |
| 200 printf("TemplateInstance(this = %p, ident = '%s')\n", this, ident ? ident.toChars() : "null"); | |
| 201 } | |
| 202 this.loc = loc; | |
| 203 this.name = ident; | |
| 204 | |
| 205 tdtypes = new Objects(); | |
| 206 } | |
| 207 | |
| 208 /***************** | |
| 209 * This constructor is only called when we figured out which function | |
| 210 * template to instantiate. | |
| 211 */ | |
| 212 this(Loc loc, TemplateDeclaration td, Objects tiargs) | |
| 213 { | |
| 214 super(null); | |
| 215 | |
| 216 version (LOG) { | |
| 217 printf("TemplateInstance(this = %p, tempdecl = '%s')\n", this, td.toChars()); | |
| 218 } | |
| 219 this.loc = loc; | |
| 220 this.name = td.ident; | |
| 221 this.tiargs = tiargs; | |
| 222 this.tempdecl = td; | |
| 223 this.semantictiargsdone = 1; | |
| 224 this.havetempdecl = 1; | |
| 225 | |
| 226 assert(cast(size_t)cast(void*)tempdecl.scope_ > 0x10000); | |
| 227 | |
| 228 tdtypes = new Objects(); | |
| 229 } | |
| 230 | |
| 231 static Objects arraySyntaxCopy(Objects objs) | |
| 232 { | |
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parents:
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diff
changeset
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233 Objects a = null; |
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1628b221808d
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Robert Clipsham <robert@octarineparrot.com>
parents:
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234 if (objs) |
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diff
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235 { a = new Objects(); |
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236 a.setDim(objs.dim); |
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1628b221808d
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parents:
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237 for (size_t i = 0; i < objs.dim; i++) |
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238 { |
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239 a.data[i] = cast(void*)objectSyntaxCopy(cast(Object)objs.data[i]); |
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240 } |
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241 } |
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parents:
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242 return a; |
| 0 | 243 } |
| 244 | |
| 72 | 245 override Dsymbol syntaxCopy(Dsymbol s) |
| 0 | 246 { |
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247 TemplateInstance ti; |
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248 |
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249 if (s) |
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250 ti = cast(TemplateInstance)s; |
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251 else |
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252 ti = new TemplateInstance(loc, name); |
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253 |
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254 ti.tiargs = arraySyntaxCopy(tiargs); |
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255 |
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256 ScopeDsymbol.syntaxCopy(ti); |
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257 return ti; |
| 0 | 258 } |
| 259 | |
| 72 | 260 override void semantic(Scope sc) |
| 0 | 261 { |
| 262 if (global.errors) | |
| 263 { | |
| 264 if (!global.gag) | |
| 265 { | |
| 266 /* Trying to soldier on rarely generates useful messages | |
| 267 * at this point. | |
| 268 */ | |
| 269 fatal(); | |
| 270 } | |
| 271 return; | |
| 272 } | |
| 273 | |
| 274 version (LOG) { | |
| 275 printf("\n+TemplateInstance.semantic('%s', this=%p)\n", toChars(), this); | |
| 276 } | |
| 277 | |
| 278 if (inst) // if semantic() was already run | |
| 279 { | |
| 280 version (LOG) { | |
| 281 printf("-TemplateInstance.semantic('%s', this=%p) already run\n", inst.toChars(), inst); | |
| 282 } | |
| 283 return; | |
| 284 } | |
| 285 | |
| 286 // get the enclosing template instance from the scope tinst | |
| 287 tinst = sc.tinst; | |
| 288 | |
| 289 if (semanticRun != 0) | |
| 290 { | |
| 291 error(loc, "recursive template expansion"); | |
| 292 // inst = this; | |
| 293 return; | |
| 294 } | |
| 295 | |
| 296 semanticRun = 1; | |
| 297 | |
| 298 version (LOG) { | |
| 299 printf("\tdo semantic\n"); | |
| 300 } | |
| 301 if (havetempdecl) | |
| 302 { | |
| 303 assert(cast(size_t)cast(void*)tempdecl.scope_ > 0x10000); | |
| 304 | |
| 305 // Deduce tdtypes | |
| 306 tdtypes.setDim(tempdecl.parameters.dim); | |
| 307 if (!tempdecl.matchWithInstance(this, tdtypes, 2)) | |
| 308 { | |
| 309 error("incompatible arguments for template instantiation"); | |
| 310 inst = this; | |
| 311 return; | |
| 312 } | |
| 313 } | |
| 314 else | |
| 315 { | |
| 316 /* Run semantic on each argument, place results in tiargs[] | |
| 317 * (if we havetempdecl, then tiargs is already evaluated) | |
| 318 */ | |
| 319 semanticTiargs(sc); | |
| 320 | |
| 321 tempdecl = findTemplateDeclaration(sc); | |
| 322 if (tempdecl) | |
| 323 tempdecl = findBestMatch(sc); | |
| 324 | |
| 325 if (!tempdecl || global.errors) | |
| 326 { | |
| 327 inst = this; | |
| 328 //printf("error return %p, %d\n", tempdecl, global.errors); | |
| 329 return; // error recovery | |
| 330 } | |
| 331 } | |
| 332 | |
| 333 hasNestedArgs(tiargs); | |
| 334 | |
| 335 /* See if there is an existing TemplateInstantiation that already | |
| 336 * implements the typeargs. If so, just refer to that one instead. | |
| 337 */ | |
| 338 | |
| 339 for (size_t i = 0; i < tempdecl.instances.dim; i++) | |
| 340 { | |
| 341 TemplateInstance ti = cast(TemplateInstance)tempdecl.instances.data[i]; | |
| 342 version (LOG) { | |
| 343 printf("\t%s: checking for match with instance %d (%p): '%s'\n", toChars(), i, ti, ti.toChars()); | |
| 344 } | |
| 345 assert(tdtypes.dim == ti.tdtypes.dim); | |
| 346 | |
| 347 // Nesting must match | |
| 348 if (isnested !is ti.isnested) | |
| 349 { | |
| 350 //printf("test2 isnested %s ti.isnested %s\n", isnested ? isnested.toChars() : "", ti.isnested ? ti.isnested.toChars() : ""); | |
| 351 continue; | |
| 352 } | |
| 353 static if (false) { | |
| 354 if (isnested && sc.parent != ti.parent) | |
| 355 continue; | |
| 356 } | |
| 357 for (size_t j = 0; j < tdtypes.dim; j++) | |
| 358 { | |
| 359 Object o1 = cast(Object)tdtypes.data[j]; | |
| 360 Object o2 = cast(Object)ti.tdtypes.data[j]; | |
| 361 if (!match(o1, o2, tempdecl, sc)) | |
| 362 { | |
| 363 goto L1; | |
| 364 } | |
| 365 } | |
| 366 | |
| 367 // It's a match | |
| 368 inst = ti; | |
| 369 parent = ti.parent; | |
| 370 version (LOG) { | |
| 371 printf("\tit's a match with instance %p\n", inst); | |
| 372 } | |
| 373 return; | |
| 374 | |
| 375 L1: | |
| 376 ; | |
| 377 } | |
| 378 | |
| 379 /* So, we need to implement 'this' instance. | |
| 380 */ | |
| 381 version (LOG) { | |
| 382 printf("\timplement template instance '%s'\n", toChars()); | |
| 383 } | |
| 384 uint errorsave = global.errors; | |
| 385 inst = this; | |
| 386 int tempdecl_instance_idx = tempdecl.instances.dim; | |
| 387 tempdecl.instances.push(cast(void*)this); | |
| 388 parent = tempdecl.parent; | |
| 389 //printf("parent = '%s'\n", parent.kind()); | |
| 390 | |
| 391 ident = genIdent(); // need an identifier for name mangling purposes. | |
| 392 | |
| 393 static if (true) { | |
| 394 if (isnested) | |
| 395 parent = isnested; | |
| 396 } | |
| 397 //printf("parent = '%s'\n", parent.kind()); | |
| 398 | |
| 399 // Add 'this' to the enclosing scope's members[] so the semantic routines | |
| 400 // will get called on the instance members | |
| 401 static if (true) { | |
| 402 int dosemantic3 = 0; | |
| 403 { | |
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parents:
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404 Dsymbols a; |
| 0 | 405 |
| 406 Scope scx = sc; | |
| 407 static if (false) { | |
| 408 for (scx = sc; scx; scx = scx.enclosing) | |
| 409 if (scx.scopesym) | |
| 410 break; | |
| 411 } | |
| 412 | |
| 413 //if (scx && scx.scopesym) printf("3: scx is %s %s\n", scx.scopesym.kind(), scx.scopesym.toChars()); | |
| 414 if (scx && scx.scopesym && | |
| 415 scx.scopesym.members && !scx.scopesym.isTemplateMixin() | |
| 416 | |
| 417 /// static if (false) { // removed because it bloated compile times | |
| 418 /// /* The problem is if A imports B, and B imports A, and both A | |
| 419 /// * and B instantiate the same template, does the compilation of A | |
| 420 /// * or the compilation of B do the actual instantiation? | |
| 421 /// * | |
| 422 /// * see bugzilla 2500. | |
| 423 /// */ | |
| 424 /// && !scx.module.selfImports() | |
| 425 /// } | |
| 426 ) | |
| 427 { | |
| 428 //printf("\t1: adding to %s %s\n", scx.scopesym.kind(), scx.scopesym.toChars()); | |
| 429 a = scx.scopesym.members; | |
| 430 } | |
| 431 else | |
| 432 { Module m = sc.module_.importedFrom; | |
| 433 //printf("\t2: adding to module %s instead of module %s\n", m.toChars(), sc.module.toChars()); | |
| 434 a = m.members; | |
| 435 if (m.semanticRun >= 3) | |
| 436 dosemantic3 = 1; | |
| 437 } | |
| 438 | |
| 439 for (int i = 0; 1; i++) | |
| 440 { | |
| 441 if (i == a.dim) | |
| 442 { | |
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443 a.push(this); |
| 0 | 444 break; |
| 445 } | |
| 446 | |
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parents:
72
diff
changeset
|
447 if (this is a[i]) // if already in Array |
| 0 | 448 break; |
| 449 } | |
| 450 } | |
| 451 } | |
| 452 | |
| 453 // Copy the syntax trees from the TemplateDeclaration | |
| 454 members = Dsymbol.arraySyntaxCopy(tempdecl.members); | |
| 455 | |
| 456 // Create our own scope for the template parameters | |
| 457 Scope scope_ = tempdecl.scope_; | |
| 458 if (!tempdecl.semanticRun) | |
| 459 { | |
| 460 error("template instantiation %s forward references template declaration %s\n", toChars(), tempdecl.toChars()); | |
| 461 return; | |
| 462 } | |
| 463 | |
| 464 version (LOG) { | |
| 465 printf("\tcreate scope for template parameters '%s'\n", toChars()); | |
| 466 } | |
| 467 argsym = new ScopeDsymbol(); | |
| 468 argsym.parent = scope_.parent; | |
| 469 scope_ = scope_.push(argsym); | |
| 470 // scope.stc = 0; | |
| 471 | |
| 472 // Declare each template parameter as an alias for the argument type | |
| 473 Scope paramscope = scope_.push(); | |
| 474 paramscope.stc = STCundefined; | |
| 475 declareParameters(paramscope); | |
| 476 paramscope.pop(); | |
| 477 | |
| 478 // Add members of template instance to template instance symbol table | |
| 479 // parent = scope.scopesym; | |
| 480 symtab = new DsymbolTable(); | |
| 13 | 481 bool memnum = false; |
|
77
ad4792a1cfd6
more D-ification container accessing
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
74
diff
changeset
|
482 foreach(Dsymbol s; members) |
| 0 | 483 { |
| 484 version (LOG) { | |
| 485 printf("\t[%d] adding member '%s' %p kind %s to '%s', memnum = %d\n", i, s.toChars(), s, s.kind(), this.toChars(), memnum); | |
| 486 } | |
| 487 memnum |= s.addMember(scope_, this, memnum); | |
| 488 } | |
| 489 | |
| 490 version (LOG) { | |
| 491 printf("adding members done\n"); | |
| 492 } | |
| 493 | |
| 494 /* See if there is only one member of template instance, and that | |
| 495 * member has the same name as the template instance. | |
| 496 * If so, this template instance becomes an alias for that member. | |
| 497 */ | |
| 498 //printf("members.dim = %d\n", members.dim); | |
| 499 if (members.dim) | |
| 500 { | |
| 501 Dsymbol s; | |
| 502 if (Dsymbol.oneMembers(members, &s) && s) | |
| 503 { | |
| 504 //printf("s.kind = '%s'\n", s.kind()); | |
| 505 //s.print(); | |
| 506 //printf("'%s', '%s'\n", s.ident.toChars(), tempdecl.ident.toChars()); | |
| 507 if (s.ident && s.ident.equals(tempdecl.ident)) | |
| 508 { | |
| 509 //printf("setting aliasdecl\n"); | |
| 510 aliasdecl = new AliasDeclaration(loc, s.ident, s); | |
| 511 } | |
| 512 } | |
| 513 } | |
| 514 | |
| 515 // Do semantic() analysis on template instance members | |
| 516 version (LOG) { | |
| 517 printf("\tdo semantic() on template instance members '%s'\n", toChars()); | |
| 518 } | |
| 519 Scope sc2; | |
| 520 sc2 = scope_.push(this); | |
| 521 //printf("isnested = %d, sc.parent = %s\n", isnested, sc.parent.toChars()); | |
| 522 sc2.parent = /*isnested ? sc.parent :*/ this; | |
| 523 sc2.tinst = this; | |
| 524 | |
| 525 try | |
| 526 { | |
| 527 static int nest; | |
| 528 //printf("%d\n", nest); | |
| 529 if (++nest > 500) | |
| 530 { | |
| 531 global.gag = 0; // ensure error message gets printed | |
| 532 error("recursive expansion"); | |
| 533 fatal(); | |
| 534 } | |
|
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535 foreach(Dsymbol s; members) |
| 0 | 536 { |
| 537 //printf("\t[%d] semantic on '%s' %p kind %s in '%s'\n", i, s.toChars(), s, s.kind(), this.toChars()); | |
| 538 //printf("test: isnested = %d, sc2.parent = %s\n", isnested, sc2.parent.toChars()); | |
| 539 // if (isnested) | |
| 540 // s.parent = sc.parent; | |
| 541 //printf("test3: isnested = %d, s.parent = %s\n", isnested, s.parent.toChars()); | |
| 542 s.semantic(sc2); | |
| 543 //printf("test4: isnested = %d, s.parent = %s\n", isnested, s.parent.toChars()); | |
| 544 sc2.module_.runDeferredSemantic(); | |
| 545 } | |
| 546 --nest; | |
| 547 } | |
|
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548 catch (Exception e) |
| 0 | 549 { |
| 550 global.gag = 0; // ensure error message gets printed | |
| 551 error("recursive expansion"); | |
| 552 fatal(); | |
| 553 } | |
| 554 | |
| 555 /* If any of the instantiation members didn't get semantic() run | |
| 556 * on them due to forward references, we cannot run semantic2() | |
| 557 * or semantic3() yet. | |
| 558 */ | |
| 559 for (size_t i = 0; i < Module.deferred.dim; i++) | |
| 560 { | |
| 561 Dsymbol sd = cast(Dsymbol)Module.deferred.data[i]; | |
| 562 | |
| 563 if (sd.parent is this) | |
| 564 goto Laftersemantic; | |
| 565 } | |
| 566 | |
| 567 /* The problem is when to parse the initializer for a variable. | |
| 568 * Perhaps VarDeclaration.semantic() should do it like it does | |
| 569 * for initializers inside a function. | |
| 570 */ | |
| 571 // if (sc.parent.isFuncDeclaration()) | |
| 572 | |
| 573 /* BUG 782: this has problems if the classes this depends on | |
| 574 * are forward referenced. Find a way to defer semantic() | |
| 575 * on this template. | |
| 576 */ | |
| 577 semantic2(sc2); | |
| 578 | |
| 579 if (sc.func || dosemantic3) | |
| 580 { | |
| 581 semantic3(sc2); | |
| 582 } | |
| 583 | |
| 584 Laftersemantic: | |
| 585 sc2.pop(); | |
| 586 | |
| 587 scope_.pop(); | |
| 588 | |
| 589 // Give additional context info if error occurred during instantiation | |
| 590 if (global.errors != errorsave) | |
| 591 { | |
| 592 error("error instantiating"); | |
| 593 if (tinst && !global.gag) | |
| 594 { | |
| 595 tinst.printInstantiationTrace(); | |
| 596 fatal(); | |
| 597 } | |
| 598 errors = 1; | |
| 599 if (global.gag) | |
| 600 tempdecl.instances.remove(tempdecl_instance_idx); | |
| 601 } | |
| 602 | |
| 603 version (LOG) { | |
| 604 printf("-TemplateInstance.semantic('%s', this=%p)\n", toChars(), this); | |
| 605 } | |
| 606 } | |
| 607 | |
| 72 | 608 override void semantic2(Scope sc) |
| 0 | 609 { |
| 610 int i; | |
| 611 | |
| 612 if (semanticRun >= 2) | |
| 613 return; | |
| 614 | |
| 615 semanticRun = 2; | |
| 616 version (LOG) { | |
|
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617 printf("+TemplateInstance.semantic2('%s')\n", toChars()); |
| 0 | 618 } |
| 619 | |
| 620 if (!errors && members) | |
| 621 { | |
| 622 sc = tempdecl.scope_; | |
| 623 assert(sc); | |
| 624 sc = sc.push(argsym); | |
| 625 sc = sc.push(this); | |
| 626 sc.tinst = this; | |
| 627 | |
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628 foreach(Dsymbol s; members) |
| 0 | 629 { |
| 630 version (LOG) { | |
| 631 printf("\tmember '%s', kind = '%s'\n", s.toChars(), s.kind()); | |
| 632 } | |
| 633 s.semantic2(sc); | |
| 634 } | |
| 635 | |
| 636 sc = sc.pop(); | |
| 637 sc.pop(); | |
| 638 } | |
| 639 | |
| 640 version (LOG) { | |
|
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641 printf("-TemplateInstance.semantic2('%s')\n", toChars()); |
| 0 | 642 } |
| 643 } | |
| 644 | |
| 72 | 645 override void semantic3(Scope sc) |
| 0 | 646 { |
| 647 version (LOG) { | |
| 648 printf("TemplateInstance.semantic3('%s'), semanticRun = %d\n", toChars(), semanticRun); | |
| 649 } | |
| 650 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 651 if (semanticRun >= 3) | |
| 652 return; | |
| 653 semanticRun = 3; | |
| 654 if (!errors && members) | |
| 655 { | |
| 656 sc = tempdecl.scope_; | |
| 657 sc = sc.push(argsym); | |
| 658 sc = sc.push(this); | |
| 659 sc.tinst = this; | |
|
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660 foreach(Dsymbol s; members) |
| 0 | 661 s.semantic3(sc); |
| 662 sc = sc.pop(); | |
| 663 sc.pop(); | |
| 664 } | |
| 665 } | |
| 666 | |
| 72 | 667 override void inlineScan() |
| 0 | 668 { |
| 669 version (LOG) { | |
| 670 printf("TemplateInstance.inlineScan('%s')\n", toChars()); | |
| 671 } | |
| 672 if (!errors && members) | |
| 673 { | |
|
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674 foreach(Dsymbol s; members) |
| 0 | 675 s.inlineScan(); |
| 676 } | |
| 677 } | |
| 678 | |
| 72 | 679 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 680 { |
| 681 int i; | |
| 682 | |
| 683 Identifier id = name; | |
| 684 buf.writestring(id.toChars()); | |
| 685 buf.writestring("!("); | |
| 686 if (nest) | |
| 687 buf.writestring("..."); | |
| 688 else | |
| 689 { | |
| 690 nest++; | |
| 691 Objects args = tiargs; | |
| 692 for (i = 0; i < args.dim; i++) | |
| 693 { | |
| 694 if (i) | |
| 695 buf.writeByte(','); | |
| 696 Object oarg = cast(Object)args.data[i]; | |
| 697 ObjectToCBuffer(buf, hgs, oarg); | |
| 698 } | |
| 699 nest--; | |
| 700 } | |
| 701 buf.writeByte(')'); | |
| 702 } | |
| 703 | |
| 72 | 704 override Dsymbol toAlias() // resolve real symbol |
| 0 | 705 { |
| 706 version (LOG) { | |
|
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707 printf("TemplateInstance.toAlias()\n"); |
| 0 | 708 } |
| 709 if (!inst) | |
| 710 { | |
| 711 error("cannot resolve forward reference"); | |
| 712 return this; | |
| 713 } | |
| 714 | |
| 715 if (inst !is this) | |
| 716 return inst.toAlias(); | |
| 717 | |
| 718 if (aliasdecl) | |
| 719 { | |
| 720 return aliasdecl.toAlias(); | |
| 721 } | |
| 722 | |
| 723 return inst; | |
| 724 } | |
| 725 | |
| 72 | 726 override string kind() |
| 0 | 727 { |
|
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728 return "template instance"; |
| 0 | 729 } |
| 730 | |
| 72 | 731 override bool oneMember(Dsymbol* ps) |
| 0 | 732 { |
|
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733 *ps = null; |
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734 return true; |
| 0 | 735 } |
| 736 | |
| 72 | 737 override string toChars() |
| 0 | 738 { |
| 739 scope OutBuffer buf = new OutBuffer(); | |
| 740 HdrGenState hgs; | |
| 741 | |
| 742 toCBuffer(buf, &hgs); | |
| 743 return buf.extractString(); | |
| 744 } | |
| 745 | |
| 72 | 746 override string mangle() |
| 0 | 747 { |
|
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748 OutBuffer buf = new OutBuffer(); |
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749 string id; |
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750 |
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751 static if (0) { |
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752 printf("TemplateInstance.mangle() %s", toChars()); |
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753 if (parent) |
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754 printf(" parent = %s %s", parent.kind(), parent.toChars()); |
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755 printf("\n"); |
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756 } |
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757 id = ident ? ident.toChars() : toChars(); |
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758 if (!tempdecl) |
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759 error("is not defined"); |
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760 else if (tempdecl.parent) |
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761 { |
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762 string p = tempdecl.parent.mangle(); |
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763 if (p[0] == '_' && p[1] == 'D') |
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764 p = p[2..$]; |
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765 buf.writestring(p); |
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766 } |
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767 buf.printf("%d%s", id.length, id); |
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768 id = buf.toChars(); |
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769 buf.data = null; |
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770 //printf("TemplateInstance.mangle() %s = %s\n", toChars(), id); |
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771 return id; |
| 0 | 772 } |
| 773 | |
| 774 void printInstantiationTrace() | |
| 775 { | |
|
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776 if (global.gag) |
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777 return; |
| 0 | 778 } |
| 779 | |
| 72 | 780 override void toObjFile(int multiobj) // compile to .obj file |
| 0 | 781 { |
| 782 version (LOG) { | |
| 783 printf("TemplateInstance.toObjFile('%s', this = %p)\n", toChars(), this); | |
| 784 } | |
| 785 if (!errors && members) | |
| 786 { | |
| 787 if (multiobj) | |
| 788 // Append to list of object files to be written later | |
| 789 obj_append(this); | |
| 790 else | |
| 791 { | |
|
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792 foreach(Dsymbol s; members) |
| 0 | 793 s.toObjFile(multiobj); |
| 794 } | |
| 795 } | |
| 796 } | |
| 797 | |
| 798 // Internal | |
| 799 /********************************** | |
| 800 * Input: | |
| 801 * flags 1: replace const variables with their initializers | |
| 802 */ | |
| 803 static void semanticTiargs(Loc loc, Scope sc, Objects tiargs, int flags) | |
| 804 { | |
| 805 // Run semantic on each argument, place results in tiargs[] | |
| 806 //printf("+TemplateInstance.semanticTiargs() %s\n", toChars()); | |
| 807 if (!tiargs) | |
| 808 return; | |
| 809 for (size_t j = 0; j < tiargs.dim; j++) | |
| 810 { | |
| 811 Object o = cast(Object)tiargs.data[j]; | |
| 812 Type ta = isType(o); | |
| 813 Expression ea = isExpression(o); | |
| 814 Dsymbol sa = isDsymbol(o); | |
| 815 | |
| 816 //printf("1: tiargs.data[%d] = %p, %p, %p, ea=%p, ta=%p\n", j, o, isDsymbol(o), isTuple(o), ea, ta); | |
| 817 if (ta) | |
| 818 { | |
| 819 //printf("type %s\n", ta.toChars()); | |
| 820 // It might really be an Expression or an Alias | |
| 821 ta.resolve(loc, sc, &ea, &ta, &sa); | |
| 822 if (ea) | |
| 823 { | |
| 824 ea = ea.semantic(sc); | |
| 825 /* This test is to skip substituting a const var with | |
| 826 * its initializer. The problem is the initializer won't | |
| 827 * match with an 'alias' parameter. Instead, do the | |
| 828 * const substitution in TemplateValueParameter.matchArg(). | |
| 829 */ | |
| 830 if (ea.op != TOKvar || flags & 1) | |
| 831 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 832 | |
| 833 tiargs.data[j] = cast(void*)ea; | |
| 834 } | |
| 835 else if (sa) | |
| 836 { | |
| 837 tiargs.data[j] = cast(void*)sa; | |
| 838 TupleDeclaration d = sa.toAlias().isTupleDeclaration(); | |
| 839 if (d) | |
| 840 { | |
| 841 size_t dim = d.objects.dim; | |
| 842 tiargs.remove(j); | |
| 843 tiargs.insert(j, d.objects); | |
| 844 j--; | |
| 845 } | |
| 846 } | |
| 847 else if (ta) | |
| 848 { | |
| 849 Ltype: | |
| 850 if (ta.ty == Ttuple) | |
| 851 { | |
| 852 // Expand tuple | |
| 853 TypeTuple tt = cast(TypeTuple)ta; | |
| 854 size_t dim = tt.arguments.dim; | |
| 855 tiargs.remove(j); | |
| 856 if (dim) | |
| 857 { | |
| 858 tiargs.reserve(dim); | |
| 859 for (size_t i = 0; i < dim; i++) | |
| 860 { | |
| 861 Argument arg = cast(Argument)tt.arguments.data[i]; | |
| 862 tiargs.insert(j + i, cast(void*)arg.type); | |
| 863 } | |
| 864 } | |
| 865 j--; | |
| 866 } | |
| 867 else | |
| 868 tiargs.data[j] = cast(void*)ta; | |
| 869 } | |
| 870 else | |
| 871 { | |
| 872 assert(global.errors); | |
| 873 tiargs.data[j] = cast(void*)Type.terror; | |
| 874 } | |
| 875 } | |
| 876 else if (ea) | |
| 877 { | |
| 878 if (!ea) | |
| 879 { | |
| 880 assert(global.errors); | |
| 881 ea = new IntegerExp(0); | |
| 882 } | |
| 883 assert(ea); | |
| 884 ea = ea.semantic(sc); | |
| 885 if (ea.op != TOKvar || flags & 1) | |
| 886 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 887 tiargs.data[j] = cast(void*)ea; | |
| 888 if (ea.op == TOKtype) | |
| 889 { | |
| 890 ta = ea.type; | |
| 891 goto Ltype; | |
| 892 } | |
| 893 if (ea.op == TOKtuple) | |
| 894 { | |
| 895 // Expand tuple | |
| 896 TupleExp te = cast(TupleExp)ea; | |
| 897 size_t dim = te.exps.dim; | |
| 898 tiargs.remove(j); | |
| 899 if (dim) | |
| 900 { | |
| 901 tiargs.reserve(dim); | |
| 902 for (size_t i = 0; i < dim; i++) | |
| 903 tiargs.insert(j + i, te.exps.data[i]); | |
| 904 } | |
| 905 j--; | |
| 906 } | |
| 907 } | |
| 908 else if (sa) | |
| 909 { | |
| 910 TemplateDeclaration td = sa.isTemplateDeclaration(); | |
| 911 if (td && !td.semanticRun && td.literal) | |
| 912 td.semantic(sc); | |
| 913 } | |
| 914 else | |
| 915 { | |
| 916 assert(0); | |
| 917 } | |
| 918 //printf("1: tiargs.data[%d] = %p\n", j, tiargs.data[j]); | |
| 919 } | |
| 920 | |
| 921 static if (false) { | |
| 922 printf("-TemplateInstance.semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 923 for (size_t j = 0; j < tiargs.dim; j++) | |
| 924 { | |
| 925 Object o = cast(Object)tiargs.data[j]; | |
| 926 Type ta = isType(o); | |
| 927 Expression ea = isExpression(o); | |
| 928 Dsymbol sa = isDsymbol(o); | |
| 929 Tuple va = isTuple(o); | |
| 930 | |
| 931 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 932 } | |
| 933 } | |
| 934 } | |
| 935 | |
| 936 void semanticTiargs(Scope sc) | |
| 937 { | |
| 938 //printf("+TemplateInstance.semanticTiargs() %s\n", toChars()); | |
| 939 if (semantictiargsdone) | |
| 940 return; | |
| 941 | |
| 942 semantictiargsdone = 1; | |
| 943 semanticTiargs(loc, sc, tiargs, 0); | |
| 944 } | |
| 945 | |
| 946 /********************************************** | |
| 947 * Find template declaration corresponding to template instance. | |
| 948 */ | |
| 949 TemplateDeclaration findTemplateDeclaration(Scope sc) | |
| 950 { | |
| 951 //printf("TemplateInstance.findTemplateDeclaration() %s\n", toChars()); | |
| 952 if (!tempdecl) | |
| 953 { | |
| 954 /* Given: | |
| 955 * foo!( ... ) | |
| 956 * figure out which TemplateDeclaration foo refers to. | |
| 957 */ | |
| 958 Dsymbol s; | |
| 959 Dsymbol scopesym; | |
| 960 int i; | |
| 961 | |
| 962 Identifier id = name; | |
| 963 s = sc.search(loc, id, &scopesym); | |
| 964 if (!s) | |
| 965 { | |
| 966 error("identifier '%s' is not defined", id.toChars()); | |
| 967 return null; | |
| 968 } | |
| 969 version (LOG) { | |
| 970 printf("It's an instance of '%s' kind '%s'\n", s.toChars(), s.kind()); | |
| 971 if (s.parent) | |
| 972 printf("s.parent = '%s'\n", s.parent.toChars()); | |
| 973 } | |
| 974 withsym = scopesym.isWithScopeSymbol(); | |
| 975 | |
| 976 /* We might have found an alias within a template when | |
| 977 * we really want the template. | |
| 978 */ | |
| 979 TemplateInstance ti; | |
| 980 if (s.parent && | |
| 981 (ti = s.parent.isTemplateInstance()) !is null) | |
| 982 { | |
| 983 if ( | |
| 984 (ti.name == id || | |
| 985 ti.toAlias().ident == id) | |
| 986 && | |
| 987 ti.tempdecl | |
| 988 ) | |
| 989 { | |
| 990 /* This is so that one can refer to the enclosing | |
| 991 * template, even if it has the same name as a member | |
| 992 * of the template, if it has a !(arguments) | |
| 993 */ | |
| 994 tempdecl = ti.tempdecl; | |
| 995 if (tempdecl.overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 996 tempdecl = tempdecl.overroot; // then get the start | |
| 997 | |
| 998 s = tempdecl; | |
| 999 } | |
| 1000 } | |
| 1001 | |
| 1002 s = s.toAlias(); | |
| 1003 | |
| 1004 /* It should be a TemplateDeclaration, not some other symbol | |
| 1005 */ | |
| 1006 tempdecl = s.isTemplateDeclaration(); | |
| 1007 if (!tempdecl) | |
| 1008 { | |
| 1009 if (!s.parent && global.errors) | |
| 1010 return null; | |
| 1011 if (!s.parent && s.getType()) | |
| 1012 { | |
| 1013 Dsymbol s2 = s.getType().toDsymbol(sc); | |
| 1014 if (!s2) | |
| 1015 { | |
| 1016 error("%s is not a template declaration, it is a %s", id.toChars(), s.kind()); | |
| 1017 return null; | |
| 1018 } | |
| 1019 s = s2; | |
| 1020 } | |
| 1021 debug { | |
| 1022 //if (!s.parent) printf("s = %s %s\n", s.kind(), s.toChars()); | |
| 1023 } | |
| 1024 //assert(s.parent); | |
| 1025 TemplateInstance ti2 = s.parent ? s.parent.isTemplateInstance() : null; | |
| 1026 if (ti2 && | |
| 1027 (ti2.name == id || | |
| 1028 ti2.toAlias().ident == id) | |
| 1029 && | |
| 1030 ti2.tempdecl | |
| 1031 ) | |
| 1032 { | |
| 1033 /* This is so that one can refer to the enclosing | |
| 1034 * template, even if it has the same name as a member | |
| 1035 * of the template, if it has a !(arguments) | |
| 1036 */ | |
| 1037 tempdecl = ti2.tempdecl; | |
| 1038 if (tempdecl.overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 1039 tempdecl = tempdecl.overroot; // then get the start | |
| 1040 } | |
| 1041 else | |
| 1042 { | |
| 1043 error("%s is not a template declaration, it is a %s", id.toChars(), s.kind()); | |
| 1044 return null; | |
| 1045 } | |
| 1046 } | |
| 1047 } | |
| 1048 else | |
| 1049 assert(tempdecl.isTemplateDeclaration()); | |
| 1050 | |
| 1051 return tempdecl; | |
| 1052 } | |
| 1053 | |
| 1054 TemplateDeclaration findBestMatch(Scope sc) | |
| 1055 { | |
| 1056 /* Since there can be multiple TemplateDeclaration's with the same | |
| 1057 * name, look for the best match. | |
| 1058 */ | |
| 1059 TemplateDeclaration td_ambig = null; | |
| 1060 TemplateDeclaration td_best = null; | |
| 1061 MATCH m_best = MATCHnomatch; | |
| 1062 scope Objects dedtypes = new Objects(); | |
| 1063 | |
| 1064 version (LOG) { | |
| 1065 printf("TemplateInstance.findBestMatch()\n"); | |
| 1066 } | |
| 1067 // First look for forward references | |
| 1068 for (TemplateDeclaration td = tempdecl; td; td = td.overnext) | |
| 1069 { | |
| 1070 if (!td.semanticRun) | |
| 1071 { | |
| 1072 if (td.scope_) | |
| 1073 { | |
| 1074 // Try to fix forward reference | |
| 1075 td.semantic(td.scope_); | |
| 1076 } | |
| 1077 if (!td.semanticRun) | |
| 1078 { | |
| 1079 error("%s forward references template declaration %s\n", toChars(), td.toChars()); | |
| 1080 return null; | |
| 1081 } | |
| 1082 } | |
| 1083 } | |
| 1084 | |
| 1085 for (TemplateDeclaration td = tempdecl; td; td = td.overnext) | |
| 1086 { | |
| 1087 MATCH m; | |
| 1088 | |
| 1089 //if (tiargs.dim) printf("2: tiargs.dim = %d, data[0] = %p\n", tiargs.dim, tiargs.data[0]); | |
| 1090 | |
| 1091 // If more arguments than parameters, | |
| 1092 // then this is no match. | |
| 1093 if (td.parameters.dim < tiargs.dim) | |
| 1094 { | |
| 1095 if (!td.isVariadic()) | |
| 1096 continue; | |
| 1097 } | |
| 1098 | |
| 1099 dedtypes.setDim(td.parameters.dim); | |
| 1100 dedtypes.zero(); | |
| 1101 assert(td.semanticRun); | |
| 1102 m = td.matchWithInstance(this, dedtypes, 0); | |
| 1103 //printf("matchWithInstance = %d\n", m); | |
| 1104 if (!m) // no match at all | |
| 1105 continue; | |
| 1106 | |
| 1107 if (m < m_best) | |
| 1108 goto Ltd_best; | |
| 1109 if (m > m_best) | |
| 1110 goto Ltd; | |
| 1111 | |
| 1112 { | |
| 1113 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1114 MATCH c1 = td.leastAsSpecialized(td_best); | |
| 1115 MATCH c2 = td_best.leastAsSpecialized(td); | |
| 1116 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1117 | |
| 1118 if (c1 > c2) | |
| 1119 goto Ltd; | |
| 1120 else if (c1 < c2) | |
| 1121 goto Ltd_best; | |
| 1122 else | |
| 1123 goto Lambig; | |
| 1124 } | |
| 1125 | |
| 1126 Lambig: // td_best and td are ambiguous | |
| 1127 td_ambig = td; | |
| 1128 continue; | |
| 1129 | |
| 1130 Ltd_best: // td_best is the best match so far | |
| 1131 td_ambig = null; | |
| 1132 continue; | |
| 1133 | |
| 1134 Ltd: // td is the new best match | |
| 1135 td_ambig = null; | |
| 1136 td_best = td; | |
| 1137 m_best = m; | |
| 1138 tdtypes.setDim(dedtypes.dim); | |
| 1139 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * (void*).sizeof); | |
| 1140 continue; | |
| 1141 } | |
| 1142 | |
| 1143 if (!td_best) | |
| 1144 { | |
| 1145 if (tempdecl && !tempdecl.overnext) | |
| 1146 // Only one template, so we can give better error message | |
| 1147 error("%s does not match template declaration %s", toChars(), tempdecl.toChars()); | |
| 1148 else | |
| 1149 error("%s does not match any template declaration", toChars()); | |
| 1150 return null; | |
| 1151 } | |
| 1152 | |
| 1153 if (td_ambig) | |
| 1154 { | |
| 1155 error("%s matches more than one template declaration, %s and %s", | |
| 1156 toChars(), td_best.toChars(), td_ambig.toChars()); | |
| 1157 } | |
| 1158 | |
| 1159 /* The best match is td_best | |
| 1160 */ | |
| 1161 tempdecl = td_best; | |
| 1162 | |
| 1163 static if (false) { | |
| 1164 /* Cast any value arguments to be same type as value parameter | |
| 1165 */ | |
| 1166 for (size_t i = 0; i < tiargs.dim; i++) | |
| 1167 { | |
| 1168 Object o = cast(Object)tiargs.data[i]; | |
| 1169 Expression ea = isExpression(o); // value argument | |
| 1170 TemplateParameter tp = cast(TemplateParameter)tempdecl.parameters.data[i]; | |
| 1171 assert(tp); | |
| 1172 TemplateValueParameter tvp = tp.isTemplateValueParameter(); | |
| 1173 if (tvp) | |
| 1174 { | |
| 1175 assert(ea); | |
| 1176 ea = ea.castTo(tvp.valType); | |
| 1177 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 1178 tiargs.data[i] = cast(Object)ea; | |
| 1179 } | |
| 1180 } | |
| 1181 } | |
| 1182 | |
| 1183 version (LOG) { | |
| 1184 printf("\tIt's a match with template declaration '%s'\n", tempdecl.toChars()); | |
| 1185 } | |
| 1186 return tempdecl; | |
| 1187 } | |
| 1188 | |
| 1189 /**************************************************** | |
| 1190 * Declare parameters of template instance, initialize them with the | |
| 1191 * template instance arguments. | |
| 1192 */ | |
| 1193 void declareParameters(Scope sc) | |
| 1194 { | |
|
20
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Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1195 //printf("TemplateInstance.declareParameters()\n"); |
| 0 | 1196 for (int i = 0; i < tdtypes.dim; i++) |
| 1197 { | |
| 1198 TemplateParameter tp = cast(TemplateParameter)tempdecl.parameters.data[i]; | |
| 1199 //Object o = cast(Object)tiargs.data[i]; | |
| 1200 Object o = cast(Object)tdtypes.data[i]; // initializer for tp | |
| 1201 | |
| 1202 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 1203 tempdecl.declareParameter(sc, tp, o); | |
| 1204 } | |
| 1205 } | |
| 1206 | |
| 1207 /***************************************** | |
| 1208 * Determines if a TemplateInstance will need a nested | |
| 1209 * generation of the TemplateDeclaration. | |
| 1210 */ | |
| 1211 bool hasNestedArgs(Objects args) | |
| 1212 { | |
| 1213 bool nested = false; | |
|
20
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1214 //printf("TemplateInstance.hasNestedArgs('%s')\n", tempdecl.ident.toChars()); |
| 0 | 1215 |
| 1216 /* A nested instance happens when an argument references a local | |
| 1217 * symbol that is on the stack. | |
| 1218 */ | |
| 1219 for (size_t i = 0; i < args.dim; i++) | |
| 1220 { | |
| 1221 Object o = cast(Object)args.data[i]; | |
| 1222 Expression ea = isExpression(o); | |
| 1223 Dsymbol sa = isDsymbol(o); | |
| 1224 Tuple va = isTuple(o); | |
| 1225 if (ea) | |
| 1226 { | |
| 1227 if (ea.op == TOKvar) | |
| 1228 { | |
| 1229 sa = (cast(VarExp)ea).var; | |
| 1230 goto Lsa; | |
| 1231 } | |
| 1232 if (ea.op == TOKfunction) | |
| 1233 { | |
| 1234 sa = (cast(FuncExp)ea).fd; | |
| 1235 goto Lsa; | |
| 1236 } | |
| 1237 } | |
| 1238 else if (sa) | |
| 1239 { | |
| 1240 Lsa: | |
| 1241 Declaration d = null; | |
| 1242 TemplateDeclaration td = sa.isTemplateDeclaration(); | |
| 1243 if (td && td.literal) | |
| 1244 { | |
| 1245 goto L2; | |
| 1246 } | |
| 1247 d = sa.isDeclaration(); | |
| 1248 if (d && !d.isDataseg() && | |
| 1249 /// version (DMDV2) { | |
| 1250 !(d.storage_class & STCmanifest) && | |
| 1251 /// } | |
| 1252 (!d.isFuncDeclaration() || d.isFuncDeclaration().isNested()) && | |
| 1253 !isTemplateMixin()) | |
| 1254 { | |
| 1255 L2: | |
| 1256 // if module level template | |
| 1257 if (tempdecl.toParent().isModule()) | |
| 1258 { | |
| 1259 Dsymbol dparent = sa.toParent(); | |
| 1260 if (!isnested) | |
| 1261 isnested = dparent; | |
| 1262 else if (isnested != dparent) | |
| 1263 { | |
| 1264 /* Select the more deeply nested of the two. | |
| 1265 * Error if one is not nested inside the other. | |
| 1266 */ | |
| 1267 for (Dsymbol p = isnested; p; p = p.parent) | |
| 1268 { | |
| 1269 if (p == dparent) | |
| 1270 goto L1; // isnested is most nested | |
| 1271 } | |
| 1272 for (Dsymbol p = dparent; p; p = p.parent) | |
| 1273 { | |
| 1274 if (p == isnested) | |
| 1275 { | |
| 1276 isnested = dparent; | |
| 1277 goto L1; // dparent is most nested | |
| 1278 } | |
| 1279 } | |
| 1280 error("%s is nested in both %s and %s", | |
| 1281 toChars(), isnested.toChars(), dparent.toChars()); | |
| 1282 } | |
| 1283 L1: | |
| 1284 //printf("\tnested inside %s\n", isnested.toChars()); | |
| 1285 nested |= 1; | |
| 1286 } | |
| 1287 else | |
| 1288 error("cannot use local '%s' as parameter to non-global template %s", d.toChars(), tempdecl.toChars()); | |
| 1289 } | |
| 1290 } | |
| 1291 else if (va) | |
| 1292 { | |
| 1293 nested |= hasNestedArgs(va.objects); | |
| 1294 } | |
| 1295 } | |
| 1296 return nested; | |
| 1297 } | |
| 1298 | |
| 1299 /**************************************** | |
| 1300 * This instance needs an identifier for name mangling purposes. | |
| 1301 * Create one by taking the template declaration name and adding | |
| 1302 * the type signature for it. | |
| 1303 */ | |
| 1304 Identifier genIdent() | |
| 1305 { | |
| 1306 scope OutBuffer buf = new OutBuffer(); | |
| 1307 string id; | |
| 1308 Objects args; | |
| 1309 | |
|
20
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1310 //printf("TemplateInstance.genIdent('%s')\n", tempdecl.ident.toChars()); |
| 0 | 1311 id = tempdecl.ident.toChars(); |
| 1312 buf.printf("__T%d%s", id.length, id); ///! | |
| 1313 args = tiargs; | |
| 1314 for (int i = 0; i < args.dim; i++) | |
| 1315 { | |
| 1316 Object o = cast(Object)args.data[i]; | |
| 1317 Type ta = isType(o); | |
| 1318 Expression ea = isExpression(o); | |
| 1319 Dsymbol sa = isDsymbol(o); | |
| 1320 Tuple va = isTuple(o); | |
| 1321 //printf("\to [%d] %p ta %p ea %p sa %p va %p\n", i, o, ta, ea, sa, va); | |
| 1322 if (ta) | |
| 1323 { | |
| 1324 buf.writeByte('T'); | |
| 1325 if (ta.deco) | |
| 1326 buf.writestring(ta.deco); | |
| 1327 else | |
| 1328 { | |
| 1329 debug writef("ta = %d, %s\n", ta.ty, ta.toChars()); | |
| 1330 assert(global.errors); | |
| 1331 } | |
| 1332 } | |
| 1333 else if (ea) | |
| 1334 { | |
| 1335 Lea: | |
| 1336 long v; | |
| 1337 real r; | |
| 1338 | |
| 1339 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 1340 if (ea.op == TOKvar) | |
| 1341 { | |
| 1342 sa = (cast(VarExp)ea).var; | |
| 1343 ea = null; | |
| 1344 goto Lsa; | |
| 1345 } | |
| 1346 if (ea.op == TOKfunction) | |
| 1347 { | |
| 1348 sa = (cast(FuncExp)ea).fd; | |
| 1349 ea = null; | |
| 1350 goto Lsa; | |
| 1351 } | |
| 1352 buf.writeByte('V'); | |
| 1353 if (ea.op == TOKtuple) | |
| 1354 { | |
| 1355 ea.error("tuple is not a valid template value argument"); | |
| 1356 continue; | |
| 1357 } | |
| 1358 static if (true) { | |
| 1359 /* Use deco that matches what it would be for a function parameter | |
| 1360 */ | |
| 1361 buf.writestring(ea.type.deco); | |
| 1362 } else { | |
| 1363 // Use type of parameter, not type of argument | |
| 1364 TemplateParameter tp = cast(TemplateParameter)tempdecl.parameters.data[i]; | |
| 1365 assert(tp); | |
| 1366 TemplateValueParameter tvp = tp.isTemplateValueParameter(); | |
| 1367 assert(tvp); | |
| 1368 buf.writestring(tvp.valType.deco); | |
| 1369 } | |
| 1370 ea.toMangleBuffer(buf); | |
| 1371 } | |
| 1372 else if (sa) | |
| 1373 { | |
| 1374 Lsa: | |
| 1375 buf.writeByte('S'); | |
| 1376 Declaration d = sa.isDeclaration(); | |
| 1377 if (d && (!d.type || !d.type.deco)) | |
| 1378 { | |
| 1379 error("forward reference of %s", d.toChars()); | |
| 1380 continue; | |
| 1381 } | |
| 1382 static if (false) { | |
| 1383 VarDeclaration v = sa.isVarDeclaration(); | |
| 1384 if (v && v.storage_class & STCmanifest) | |
| 1385 { | |
| 1386 ExpInitializer ei = v.init.isExpInitializer(); | |
| 1387 if (ei) | |
| 1388 { | |
| 1389 ea = ei.exp; | |
| 1390 goto Lea; | |
| 1391 } | |
| 1392 } | |
| 1393 } | |
| 1394 string p = sa.mangle(); | |
| 62 | 1395 ///buf.printf("%zu%s", p.length, p); |
| 1396 buf.printf("%su%s", p.length, p); | |
| 0 | 1397 } |
| 1398 else if (va) | |
| 1399 { | |
| 1400 assert(i + 1 == args.dim); // must be last one | |
| 1401 args = va.objects; | |
| 1402 i = -1; | |
| 1403 } | |
| 1404 else | |
| 1405 assert(0); | |
| 1406 } | |
| 1407 buf.writeByte('Z'); | |
| 1408 id = buf.toChars(); | |
| 1409 buf.data = null; | |
| 1410 //printf("\tgenIdent = %s\n", id); | |
| 1411 return new Identifier(id, TOKidentifier); | |
| 1412 } | |
| 1413 | |
| 72 | 1414 override TemplateInstance isTemplateInstance() { return this; } |
| 0 | 1415 |
| 72 | 1416 override AliasDeclaration isAliasDeclaration() |
| 0 | 1417 { |
| 1418 assert(false); | |
| 1419 } | |
|
20
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1420 } |