Mercurial > projects > ddmd
annotate dmd/TemplateInstance.d @ 79:43073c7c7769
updated to 2.035
also implemented a few missing functions
still crashes in Import.importAll though
| author | Trass3r |
|---|---|
| date | Mon, 30 Aug 2010 03:57:51 +0200 |
| parents | ad4792a1cfd6 |
| children | be2ab491772e |
| 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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1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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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 { | |
|
20
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
233 Objects a = null; |
|
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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234 if (objs) |
|
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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235 { a = new Objects(); |
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1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
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diff
changeset
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236 a.setDim(objs.dim); |
|
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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237 for (size_t i = 0; i < objs.dim; i++) |
|
1628b221808d
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Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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238 { |
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Robert Clipsham <robert@octarineparrot.com>
parents:
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diff
changeset
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239 a.data[i] = cast(void*)objectSyntaxCopy(cast(Object)objs.data[i]); |
|
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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240 } |
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1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
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changeset
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241 } |
|
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
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242 return a; |
| 0 | 243 } |
| 244 | |
| 72 | 245 override Dsymbol syntaxCopy(Dsymbol s) |
| 0 | 246 { |
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changeset
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247 TemplateInstance ti; |
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1628b221808d
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Robert Clipsham <robert@octarineparrot.com>
parents:
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248 |
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parents:
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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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parents:
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changeset
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253 |
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parents:
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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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parents:
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diff
changeset
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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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Switch Arrays of Dsymbols to the new templated Vector type
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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diff
changeset
|
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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Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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diff
changeset
|
443 a.push(this); |
| 0 | 444 break; |
| 445 } | |
| 446 | |
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Switch Arrays of Dsymbols to the new templated Vector type
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
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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; |
|
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more D-ification container accessing
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parents:
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diff
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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 { | |
| 79 | 527 // static int nest; |
| 0 | 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 { | |
| 79 | 581 try |
| 582 { | |
| 583 // static int nest; // TODO: | |
| 584 if (++nest > 300) | |
| 585 { | |
| 586 global.gag = 0; // ensure error message gets printed | |
| 587 error("recursive expansion"); | |
| 588 fatal(); | |
| 589 } | |
| 590 semantic3(sc2); | |
| 591 --nest; | |
| 592 } | |
| 593 catch (Exception e) | |
| 594 { | |
| 595 global.gag = 0; // ensure error message gets printed | |
| 596 error("recursive expansion"); | |
| 597 fatal(); | |
| 598 } | |
| 0 | 599 } |
| 600 | |
| 601 Laftersemantic: | |
| 602 sc2.pop(); | |
| 603 | |
| 604 scope_.pop(); | |
| 605 | |
| 606 // Give additional context info if error occurred during instantiation | |
| 607 if (global.errors != errorsave) | |
| 608 { | |
| 609 error("error instantiating"); | |
| 610 if (tinst && !global.gag) | |
| 611 { | |
| 612 tinst.printInstantiationTrace(); | |
| 613 fatal(); | |
| 614 } | |
| 615 errors = 1; | |
| 616 if (global.gag) | |
| 617 tempdecl.instances.remove(tempdecl_instance_idx); | |
| 618 } | |
| 619 | |
| 620 version (LOG) { | |
| 621 printf("-TemplateInstance.semantic('%s', this=%p)\n", toChars(), this); | |
| 622 } | |
| 623 } | |
| 624 | |
| 72 | 625 override void semantic2(Scope sc) |
| 0 | 626 { |
| 627 int i; | |
| 628 | |
| 629 if (semanticRun >= 2) | |
| 630 return; | |
| 631 | |
| 632 semanticRun = 2; | |
| 633 version (LOG) { | |
|
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634 printf("+TemplateInstance.semantic2('%s')\n", toChars()); |
| 0 | 635 } |
| 636 | |
| 637 if (!errors && members) | |
| 638 { | |
| 639 sc = tempdecl.scope_; | |
| 640 assert(sc); | |
| 641 sc = sc.push(argsym); | |
| 642 sc = sc.push(this); | |
| 643 sc.tinst = this; | |
| 644 | |
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645 foreach(Dsymbol s; members) |
| 0 | 646 { |
| 647 version (LOG) { | |
| 648 printf("\tmember '%s', kind = '%s'\n", s.toChars(), s.kind()); | |
| 649 } | |
| 650 s.semantic2(sc); | |
| 651 } | |
| 652 | |
| 653 sc = sc.pop(); | |
| 654 sc.pop(); | |
| 655 } | |
| 656 | |
| 657 version (LOG) { | |
|
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658 printf("-TemplateInstance.semantic2('%s')\n", toChars()); |
| 0 | 659 } |
| 660 } | |
| 661 | |
| 72 | 662 override void semantic3(Scope sc) |
| 0 | 663 { |
| 664 version (LOG) { | |
| 665 printf("TemplateInstance.semantic3('%s'), semanticRun = %d\n", toChars(), semanticRun); | |
| 666 } | |
| 667 //if (toChars()[0] == 'D') *(char*)0=0; | |
| 668 if (semanticRun >= 3) | |
| 669 return; | |
| 670 semanticRun = 3; | |
| 671 if (!errors && members) | |
| 672 { | |
| 673 sc = tempdecl.scope_; | |
| 674 sc = sc.push(argsym); | |
| 675 sc = sc.push(this); | |
| 676 sc.tinst = this; | |
|
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677 foreach(Dsymbol s; members) |
| 0 | 678 s.semantic3(sc); |
| 679 sc = sc.pop(); | |
| 680 sc.pop(); | |
| 681 } | |
| 682 } | |
| 683 | |
| 72 | 684 override void inlineScan() |
| 0 | 685 { |
| 686 version (LOG) { | |
| 687 printf("TemplateInstance.inlineScan('%s')\n", toChars()); | |
| 688 } | |
| 689 if (!errors && members) | |
| 690 { | |
|
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691 foreach(Dsymbol s; members) |
| 0 | 692 s.inlineScan(); |
| 693 } | |
| 694 } | |
| 695 | |
| 72 | 696 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 697 { |
| 698 int i; | |
| 699 | |
| 700 Identifier id = name; | |
| 701 buf.writestring(id.toChars()); | |
| 702 buf.writestring("!("); | |
| 703 if (nest) | |
| 704 buf.writestring("..."); | |
| 705 else | |
| 706 { | |
| 707 nest++; | |
| 708 Objects args = tiargs; | |
| 709 for (i = 0; i < args.dim; i++) | |
| 710 { | |
| 711 if (i) | |
| 712 buf.writeByte(','); | |
| 713 Object oarg = cast(Object)args.data[i]; | |
| 714 ObjectToCBuffer(buf, hgs, oarg); | |
| 715 } | |
| 716 nest--; | |
| 717 } | |
| 718 buf.writeByte(')'); | |
| 719 } | |
| 720 | |
| 72 | 721 override Dsymbol toAlias() // resolve real symbol |
| 0 | 722 { |
| 79 | 723 version (LOG) |
| 724 { | |
| 725 writef("TemplateInstance.toAlias()\n"); | |
| 0 | 726 } |
| 727 if (!inst) | |
| 728 { | |
| 729 error("cannot resolve forward reference"); | |
| 79 | 730 errors = 1; |
| 0 | 731 return this; |
| 732 } | |
| 733 | |
| 734 if (inst !is this) | |
| 735 return inst.toAlias(); | |
| 736 | |
| 737 if (aliasdecl) | |
| 738 { | |
| 739 return aliasdecl.toAlias(); | |
| 740 } | |
| 741 | |
| 742 return inst; | |
| 743 } | |
| 744 | |
| 72 | 745 override string kind() |
| 0 | 746 { |
|
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747 return "template instance"; |
| 0 | 748 } |
| 749 | |
| 72 | 750 override bool oneMember(Dsymbol* ps) |
| 0 | 751 { |
|
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752 *ps = null; |
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753 return true; |
| 0 | 754 } |
| 755 | |
| 72 | 756 override string toChars() |
| 0 | 757 { |
| 758 scope OutBuffer buf = new OutBuffer(); | |
| 759 HdrGenState hgs; | |
| 760 | |
| 761 toCBuffer(buf, &hgs); | |
| 762 return buf.extractString(); | |
| 763 } | |
| 764 | |
| 72 | 765 override string mangle() |
| 0 | 766 { |
|
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767 OutBuffer buf = new OutBuffer(); |
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768 string id; |
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769 |
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770 static if (0) { |
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771 printf("TemplateInstance.mangle() %s", toChars()); |
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772 if (parent) |
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773 printf(" parent = %s %s", parent.kind(), parent.toChars()); |
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774 printf("\n"); |
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775 } |
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776 id = ident ? ident.toChars() : toChars(); |
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777 if (!tempdecl) |
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778 error("is not defined"); |
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779 else if (tempdecl.parent) |
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780 { |
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781 string p = tempdecl.parent.mangle(); |
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782 if (p[0] == '_' && p[1] == 'D') |
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783 p = p[2..$]; |
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784 buf.writestring(p); |
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785 } |
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786 buf.printf("%d%s", id.length, id); |
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787 id = buf.toChars(); |
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|
788 buf.data = null; |
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789 //printf("TemplateInstance.mangle() %s = %s\n", toChars(), id); |
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790 return id; |
| 0 | 791 } |
| 792 | |
| 793 void printInstantiationTrace() | |
| 794 { | |
|
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795 if (global.gag) |
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|
796 return; |
| 0 | 797 } |
| 798 | |
| 72 | 799 override void toObjFile(int multiobj) // compile to .obj file |
| 0 | 800 { |
| 801 version (LOG) { | |
| 802 printf("TemplateInstance.toObjFile('%s', this = %p)\n", toChars(), this); | |
| 803 } | |
| 804 if (!errors && members) | |
| 805 { | |
| 806 if (multiobj) | |
| 807 // Append to list of object files to be written later | |
| 808 obj_append(this); | |
| 809 else | |
| 810 { | |
|
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811 foreach(Dsymbol s; members) |
| 0 | 812 s.toObjFile(multiobj); |
| 813 } | |
| 814 } | |
| 815 } | |
| 816 | |
| 817 // Internal | |
| 818 /********************************** | |
| 819 * Input: | |
| 820 * flags 1: replace const variables with their initializers | |
| 821 */ | |
| 822 static void semanticTiargs(Loc loc, Scope sc, Objects tiargs, int flags) | |
| 823 { | |
| 824 // Run semantic on each argument, place results in tiargs[] | |
| 825 //printf("+TemplateInstance.semanticTiargs() %s\n", toChars()); | |
| 826 if (!tiargs) | |
| 827 return; | |
| 828 for (size_t j = 0; j < tiargs.dim; j++) | |
| 829 { | |
| 830 Object o = cast(Object)tiargs.data[j]; | |
| 831 Type ta = isType(o); | |
| 832 Expression ea = isExpression(o); | |
| 833 Dsymbol sa = isDsymbol(o); | |
| 834 | |
| 835 //printf("1: tiargs.data[%d] = %p, %p, %p, ea=%p, ta=%p\n", j, o, isDsymbol(o), isTuple(o), ea, ta); | |
| 836 if (ta) | |
| 837 { | |
| 838 //printf("type %s\n", ta.toChars()); | |
| 839 // It might really be an Expression or an Alias | |
| 840 ta.resolve(loc, sc, &ea, &ta, &sa); | |
| 841 if (ea) | |
| 842 { | |
| 843 ea = ea.semantic(sc); | |
| 844 /* This test is to skip substituting a const var with | |
| 845 * its initializer. The problem is the initializer won't | |
| 846 * match with an 'alias' parameter. Instead, do the | |
| 847 * const substitution in TemplateValueParameter.matchArg(). | |
| 848 */ | |
| 849 if (ea.op != TOKvar || flags & 1) | |
| 850 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 851 | |
| 852 tiargs.data[j] = cast(void*)ea; | |
| 853 } | |
| 854 else if (sa) | |
| 855 { | |
| 856 tiargs.data[j] = cast(void*)sa; | |
| 857 TupleDeclaration d = sa.toAlias().isTupleDeclaration(); | |
| 858 if (d) | |
| 859 { | |
| 860 size_t dim = d.objects.dim; | |
| 861 tiargs.remove(j); | |
| 862 tiargs.insert(j, d.objects); | |
| 863 j--; | |
| 864 } | |
| 865 } | |
| 866 else if (ta) | |
| 867 { | |
| 868 Ltype: | |
| 869 if (ta.ty == Ttuple) | |
| 870 { | |
| 871 // Expand tuple | |
| 872 TypeTuple tt = cast(TypeTuple)ta; | |
| 873 size_t dim = tt.arguments.dim; | |
| 874 tiargs.remove(j); | |
| 875 if (dim) | |
| 876 { | |
| 877 tiargs.reserve(dim); | |
| 878 for (size_t i = 0; i < dim; i++) | |
| 879 { | |
| 880 Argument arg = cast(Argument)tt.arguments.data[i]; | |
| 881 tiargs.insert(j + i, cast(void*)arg.type); | |
| 882 } | |
| 883 } | |
| 884 j--; | |
| 885 } | |
| 886 else | |
| 887 tiargs.data[j] = cast(void*)ta; | |
| 888 } | |
| 889 else | |
| 890 { | |
| 891 assert(global.errors); | |
| 892 tiargs.data[j] = cast(void*)Type.terror; | |
| 893 } | |
| 894 } | |
| 895 else if (ea) | |
| 896 { | |
| 897 if (!ea) | |
| 898 { | |
| 899 assert(global.errors); | |
| 900 ea = new IntegerExp(0); | |
| 901 } | |
| 902 assert(ea); | |
| 903 ea = ea.semantic(sc); | |
| 904 if (ea.op != TOKvar || flags & 1) | |
| 905 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 906 tiargs.data[j] = cast(void*)ea; | |
| 907 if (ea.op == TOKtype) | |
| 908 { | |
| 909 ta = ea.type; | |
| 910 goto Ltype; | |
| 911 } | |
| 912 if (ea.op == TOKtuple) | |
| 913 { | |
| 914 // Expand tuple | |
| 915 TupleExp te = cast(TupleExp)ea; | |
| 916 size_t dim = te.exps.dim; | |
| 917 tiargs.remove(j); | |
| 918 if (dim) | |
| 919 { | |
| 920 tiargs.reserve(dim); | |
| 921 for (size_t i = 0; i < dim; i++) | |
| 922 tiargs.insert(j + i, te.exps.data[i]); | |
| 923 } | |
| 924 j--; | |
| 925 } | |
| 926 } | |
| 927 else if (sa) | |
| 928 { | |
| 929 TemplateDeclaration td = sa.isTemplateDeclaration(); | |
| 930 if (td && !td.semanticRun && td.literal) | |
| 931 td.semantic(sc); | |
| 932 } | |
| 933 else | |
| 934 { | |
| 935 assert(0); | |
| 936 } | |
| 937 //printf("1: tiargs.data[%d] = %p\n", j, tiargs.data[j]); | |
| 938 } | |
| 939 | |
| 940 static if (false) { | |
| 941 printf("-TemplateInstance.semanticTiargs('%s', this=%p)\n", toChars(), this); | |
| 942 for (size_t j = 0; j < tiargs.dim; j++) | |
| 943 { | |
| 944 Object o = cast(Object)tiargs.data[j]; | |
| 945 Type ta = isType(o); | |
| 946 Expression ea = isExpression(o); | |
| 947 Dsymbol sa = isDsymbol(o); | |
| 948 Tuple va = isTuple(o); | |
| 949 | |
| 950 printf("\ttiargs[%d] = ta %p, ea %p, sa %p, va %p\n", j, ta, ea, sa, va); | |
| 951 } | |
| 952 } | |
| 953 } | |
| 954 | |
| 955 void semanticTiargs(Scope sc) | |
| 956 { | |
| 957 //printf("+TemplateInstance.semanticTiargs() %s\n", toChars()); | |
| 958 if (semantictiargsdone) | |
| 959 return; | |
| 960 | |
| 961 semantictiargsdone = 1; | |
| 962 semanticTiargs(loc, sc, tiargs, 0); | |
| 963 } | |
| 964 | |
| 965 /********************************************** | |
| 966 * Find template declaration corresponding to template instance. | |
| 967 */ | |
| 968 TemplateDeclaration findTemplateDeclaration(Scope sc) | |
| 969 { | |
| 970 //printf("TemplateInstance.findTemplateDeclaration() %s\n", toChars()); | |
| 971 if (!tempdecl) | |
| 972 { | |
| 973 /* Given: | |
| 974 * foo!( ... ) | |
| 975 * figure out which TemplateDeclaration foo refers to. | |
| 976 */ | |
| 977 Dsymbol s; | |
| 978 Dsymbol scopesym; | |
| 979 int i; | |
| 980 | |
| 981 Identifier id = name; | |
| 982 s = sc.search(loc, id, &scopesym); | |
| 983 if (!s) | |
| 984 { | |
| 985 error("identifier '%s' is not defined", id.toChars()); | |
| 986 return null; | |
| 987 } | |
| 988 version (LOG) { | |
| 989 printf("It's an instance of '%s' kind '%s'\n", s.toChars(), s.kind()); | |
| 990 if (s.parent) | |
| 991 printf("s.parent = '%s'\n", s.parent.toChars()); | |
| 992 } | |
| 993 withsym = scopesym.isWithScopeSymbol(); | |
| 994 | |
| 995 /* We might have found an alias within a template when | |
| 996 * we really want the template. | |
| 997 */ | |
| 998 TemplateInstance ti; | |
| 999 if (s.parent && | |
| 1000 (ti = s.parent.isTemplateInstance()) !is null) | |
| 1001 { | |
| 1002 if ( | |
| 1003 (ti.name == id || | |
| 1004 ti.toAlias().ident == id) | |
| 1005 && | |
| 1006 ti.tempdecl | |
| 1007 ) | |
| 1008 { | |
| 1009 /* This is so that one can refer to the enclosing | |
| 1010 * template, even if it has the same name as a member | |
| 1011 * of the template, if it has a !(arguments) | |
| 1012 */ | |
| 1013 tempdecl = ti.tempdecl; | |
| 1014 if (tempdecl.overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 1015 tempdecl = tempdecl.overroot; // then get the start | |
| 1016 | |
| 1017 s = tempdecl; | |
| 1018 } | |
| 1019 } | |
| 1020 | |
| 1021 s = s.toAlias(); | |
| 1022 | |
| 1023 /* It should be a TemplateDeclaration, not some other symbol | |
| 1024 */ | |
| 1025 tempdecl = s.isTemplateDeclaration(); | |
| 1026 if (!tempdecl) | |
| 1027 { | |
| 1028 if (!s.parent && global.errors) | |
| 1029 return null; | |
| 1030 if (!s.parent && s.getType()) | |
| 1031 { | |
| 1032 Dsymbol s2 = s.getType().toDsymbol(sc); | |
| 1033 if (!s2) | |
| 1034 { | |
| 1035 error("%s is not a template declaration, it is a %s", id.toChars(), s.kind()); | |
| 1036 return null; | |
| 1037 } | |
| 1038 s = s2; | |
| 1039 } | |
| 1040 debug { | |
| 1041 //if (!s.parent) printf("s = %s %s\n", s.kind(), s.toChars()); | |
| 1042 } | |
| 1043 //assert(s.parent); | |
| 1044 TemplateInstance ti2 = s.parent ? s.parent.isTemplateInstance() : null; | |
| 1045 if (ti2 && | |
| 1046 (ti2.name == id || | |
| 1047 ti2.toAlias().ident == id) | |
| 1048 && | |
| 1049 ti2.tempdecl | |
| 1050 ) | |
| 1051 { | |
| 1052 /* This is so that one can refer to the enclosing | |
| 1053 * template, even if it has the same name as a member | |
| 1054 * of the template, if it has a !(arguments) | |
| 1055 */ | |
| 1056 tempdecl = ti2.tempdecl; | |
| 1057 if (tempdecl.overroot) // if not start of overloaded list of TemplateDeclaration's | |
| 1058 tempdecl = tempdecl.overroot; // then get the start | |
| 1059 } | |
| 1060 else | |
| 1061 { | |
| 1062 error("%s is not a template declaration, it is a %s", id.toChars(), s.kind()); | |
| 1063 return null; | |
| 1064 } | |
| 1065 } | |
| 1066 } | |
| 1067 else | |
| 1068 assert(tempdecl.isTemplateDeclaration()); | |
| 1069 | |
| 1070 return tempdecl; | |
| 1071 } | |
| 1072 | |
| 1073 TemplateDeclaration findBestMatch(Scope sc) | |
| 1074 { | |
| 1075 /* Since there can be multiple TemplateDeclaration's with the same | |
| 1076 * name, look for the best match. | |
| 1077 */ | |
| 1078 TemplateDeclaration td_ambig = null; | |
| 1079 TemplateDeclaration td_best = null; | |
| 1080 MATCH m_best = MATCHnomatch; | |
| 1081 scope Objects dedtypes = new Objects(); | |
| 1082 | |
| 1083 version (LOG) { | |
| 1084 printf("TemplateInstance.findBestMatch()\n"); | |
| 1085 } | |
| 1086 // First look for forward references | |
| 1087 for (TemplateDeclaration td = tempdecl; td; td = td.overnext) | |
| 1088 { | |
| 1089 if (!td.semanticRun) | |
| 1090 { | |
| 1091 if (td.scope_) | |
| 1092 { | |
| 1093 // Try to fix forward reference | |
| 1094 td.semantic(td.scope_); | |
| 1095 } | |
| 1096 if (!td.semanticRun) | |
| 1097 { | |
| 1098 error("%s forward references template declaration %s\n", toChars(), td.toChars()); | |
| 1099 return null; | |
| 1100 } | |
| 1101 } | |
| 1102 } | |
| 1103 | |
| 1104 for (TemplateDeclaration td = tempdecl; td; td = td.overnext) | |
| 1105 { | |
| 1106 MATCH m; | |
| 1107 | |
| 1108 //if (tiargs.dim) printf("2: tiargs.dim = %d, data[0] = %p\n", tiargs.dim, tiargs.data[0]); | |
| 1109 | |
| 1110 // If more arguments than parameters, | |
| 1111 // then this is no match. | |
| 1112 if (td.parameters.dim < tiargs.dim) | |
| 1113 { | |
| 1114 if (!td.isVariadic()) | |
| 1115 continue; | |
| 1116 } | |
| 1117 | |
| 1118 dedtypes.setDim(td.parameters.dim); | |
| 1119 dedtypes.zero(); | |
| 1120 assert(td.semanticRun); | |
| 1121 m = td.matchWithInstance(this, dedtypes, 0); | |
| 1122 //printf("matchWithInstance = %d\n", m); | |
| 1123 if (!m) // no match at all | |
| 1124 continue; | |
| 1125 | |
| 1126 if (m < m_best) | |
| 1127 goto Ltd_best; | |
| 1128 if (m > m_best) | |
| 1129 goto Ltd; | |
| 1130 | |
| 1131 { | |
| 1132 // Disambiguate by picking the most specialized TemplateDeclaration | |
| 1133 MATCH c1 = td.leastAsSpecialized(td_best); | |
| 1134 MATCH c2 = td_best.leastAsSpecialized(td); | |
| 1135 //printf("c1 = %d, c2 = %d\n", c1, c2); | |
| 1136 | |
| 1137 if (c1 > c2) | |
| 1138 goto Ltd; | |
| 1139 else if (c1 < c2) | |
| 1140 goto Ltd_best; | |
| 1141 else | |
| 1142 goto Lambig; | |
| 1143 } | |
| 1144 | |
| 1145 Lambig: // td_best and td are ambiguous | |
| 1146 td_ambig = td; | |
| 1147 continue; | |
| 1148 | |
| 1149 Ltd_best: // td_best is the best match so far | |
| 1150 td_ambig = null; | |
| 1151 continue; | |
| 1152 | |
| 1153 Ltd: // td is the new best match | |
| 1154 td_ambig = null; | |
| 1155 td_best = td; | |
| 1156 m_best = m; | |
| 1157 tdtypes.setDim(dedtypes.dim); | |
| 1158 memcpy(tdtypes.data, dedtypes.data, tdtypes.dim * (void*).sizeof); | |
| 1159 continue; | |
| 1160 } | |
| 1161 | |
| 1162 if (!td_best) | |
| 1163 { | |
| 1164 if (tempdecl && !tempdecl.overnext) | |
| 1165 // Only one template, so we can give better error message | |
| 1166 error("%s does not match template declaration %s", toChars(), tempdecl.toChars()); | |
| 1167 else | |
| 1168 error("%s does not match any template declaration", toChars()); | |
| 1169 return null; | |
| 1170 } | |
| 1171 | |
| 1172 if (td_ambig) | |
| 1173 { | |
| 1174 error("%s matches more than one template declaration, %s and %s", | |
| 1175 toChars(), td_best.toChars(), td_ambig.toChars()); | |
| 1176 } | |
| 1177 | |
| 1178 /* The best match is td_best | |
| 1179 */ | |
| 1180 tempdecl = td_best; | |
| 1181 | |
| 1182 static if (false) { | |
| 1183 /* Cast any value arguments to be same type as value parameter | |
| 1184 */ | |
| 1185 for (size_t i = 0; i < tiargs.dim; i++) | |
| 1186 { | |
| 1187 Object o = cast(Object)tiargs.data[i]; | |
| 1188 Expression ea = isExpression(o); // value argument | |
| 1189 TemplateParameter tp = cast(TemplateParameter)tempdecl.parameters.data[i]; | |
| 1190 assert(tp); | |
| 1191 TemplateValueParameter tvp = tp.isTemplateValueParameter(); | |
| 1192 if (tvp) | |
| 1193 { | |
| 1194 assert(ea); | |
| 1195 ea = ea.castTo(tvp.valType); | |
| 1196 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 1197 tiargs.data[i] = cast(Object)ea; | |
| 1198 } | |
| 1199 } | |
| 1200 } | |
| 1201 | |
| 1202 version (LOG) { | |
| 1203 printf("\tIt's a match with template declaration '%s'\n", tempdecl.toChars()); | |
| 1204 } | |
| 1205 return tempdecl; | |
| 1206 } | |
| 1207 | |
| 1208 /**************************************************** | |
| 1209 * Declare parameters of template instance, initialize them with the | |
| 1210 * template instance arguments. | |
| 1211 */ | |
| 1212 void declareParameters(Scope sc) | |
| 1213 { | |
|
20
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Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1214 //printf("TemplateInstance.declareParameters()\n"); |
| 0 | 1215 for (int i = 0; i < tdtypes.dim; i++) |
| 1216 { | |
| 1217 TemplateParameter tp = cast(TemplateParameter)tempdecl.parameters.data[i]; | |
| 1218 //Object o = cast(Object)tiargs.data[i]; | |
| 1219 Object o = cast(Object)tdtypes.data[i]; // initializer for tp | |
| 1220 | |
| 1221 //printf("\ttdtypes[%d] = %p\n", i, o); | |
| 1222 tempdecl.declareParameter(sc, tp, o); | |
| 1223 } | |
| 1224 } | |
| 1225 | |
| 1226 /***************************************** | |
| 1227 * Determines if a TemplateInstance will need a nested | |
| 1228 * generation of the TemplateDeclaration. | |
| 1229 */ | |
| 1230 bool hasNestedArgs(Objects args) | |
| 1231 { | |
| 1232 bool nested = false; | |
|
20
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1233 //printf("TemplateInstance.hasNestedArgs('%s')\n", tempdecl.ident.toChars()); |
| 0 | 1234 |
| 1235 /* A nested instance happens when an argument references a local | |
| 1236 * symbol that is on the stack. | |
| 1237 */ | |
| 1238 for (size_t i = 0; i < args.dim; i++) | |
| 1239 { | |
| 1240 Object o = cast(Object)args.data[i]; | |
| 1241 Expression ea = isExpression(o); | |
| 1242 Dsymbol sa = isDsymbol(o); | |
| 1243 Tuple va = isTuple(o); | |
| 1244 if (ea) | |
| 1245 { | |
| 1246 if (ea.op == TOKvar) | |
| 1247 { | |
| 1248 sa = (cast(VarExp)ea).var; | |
| 1249 goto Lsa; | |
| 1250 } | |
| 1251 if (ea.op == TOKfunction) | |
| 1252 { | |
| 1253 sa = (cast(FuncExp)ea).fd; | |
| 1254 goto Lsa; | |
| 1255 } | |
| 1256 } | |
| 1257 else if (sa) | |
| 1258 { | |
| 1259 Lsa: | |
| 1260 Declaration d = null; | |
| 1261 TemplateDeclaration td = sa.isTemplateDeclaration(); | |
| 1262 if (td && td.literal) | |
| 1263 { | |
| 1264 goto L2; | |
| 1265 } | |
| 1266 d = sa.isDeclaration(); | |
| 1267 if (d && !d.isDataseg() && | |
| 1268 /// version (DMDV2) { | |
| 1269 !(d.storage_class & STCmanifest) && | |
| 1270 /// } | |
| 1271 (!d.isFuncDeclaration() || d.isFuncDeclaration().isNested()) && | |
| 1272 !isTemplateMixin()) | |
| 1273 { | |
| 1274 L2: | |
| 1275 // if module level template | |
| 1276 if (tempdecl.toParent().isModule()) | |
| 1277 { | |
| 1278 Dsymbol dparent = sa.toParent(); | |
| 1279 if (!isnested) | |
| 1280 isnested = dparent; | |
| 1281 else if (isnested != dparent) | |
| 1282 { | |
| 1283 /* Select the more deeply nested of the two. | |
| 1284 * Error if one is not nested inside the other. | |
| 1285 */ | |
| 1286 for (Dsymbol p = isnested; p; p = p.parent) | |
| 1287 { | |
| 1288 if (p == dparent) | |
| 1289 goto L1; // isnested is most nested | |
| 1290 } | |
| 1291 for (Dsymbol p = dparent; p; p = p.parent) | |
| 1292 { | |
| 1293 if (p == isnested) | |
| 1294 { | |
| 1295 isnested = dparent; | |
| 1296 goto L1; // dparent is most nested | |
| 1297 } | |
| 1298 } | |
| 1299 error("%s is nested in both %s and %s", | |
| 1300 toChars(), isnested.toChars(), dparent.toChars()); | |
| 1301 } | |
| 1302 L1: | |
| 1303 //printf("\tnested inside %s\n", isnested.toChars()); | |
| 1304 nested |= 1; | |
| 1305 } | |
| 1306 else | |
| 1307 error("cannot use local '%s' as parameter to non-global template %s", d.toChars(), tempdecl.toChars()); | |
| 1308 } | |
| 1309 } | |
| 1310 else if (va) | |
| 1311 { | |
| 1312 nested |= hasNestedArgs(va.objects); | |
| 1313 } | |
| 1314 } | |
| 1315 return nested; | |
| 1316 } | |
| 1317 | |
| 1318 /**************************************** | |
| 1319 * This instance needs an identifier for name mangling purposes. | |
| 1320 * Create one by taking the template declaration name and adding | |
| 1321 * the type signature for it. | |
| 1322 */ | |
| 1323 Identifier genIdent() | |
| 1324 { | |
| 1325 scope OutBuffer buf = new OutBuffer(); | |
| 1326 string id; | |
| 1327 Objects args; | |
| 1328 | |
|
20
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1329 //printf("TemplateInstance.genIdent('%s')\n", tempdecl.ident.toChars()); |
| 0 | 1330 id = tempdecl.ident.toChars(); |
| 1331 buf.printf("__T%d%s", id.length, id); ///! | |
| 1332 args = tiargs; | |
| 1333 for (int i = 0; i < args.dim; i++) | |
| 1334 { | |
| 1335 Object o = cast(Object)args.data[i]; | |
| 1336 Type ta = isType(o); | |
| 1337 Expression ea = isExpression(o); | |
| 1338 Dsymbol sa = isDsymbol(o); | |
| 1339 Tuple va = isTuple(o); | |
| 1340 //printf("\to [%d] %p ta %p ea %p sa %p va %p\n", i, o, ta, ea, sa, va); | |
| 1341 if (ta) | |
| 1342 { | |
| 1343 buf.writeByte('T'); | |
| 1344 if (ta.deco) | |
| 1345 buf.writestring(ta.deco); | |
| 1346 else | |
| 1347 { | |
| 1348 debug writef("ta = %d, %s\n", ta.ty, ta.toChars()); | |
| 1349 assert(global.errors); | |
| 1350 } | |
| 1351 } | |
| 1352 else if (ea) | |
| 1353 { | |
| 1354 Lea: | |
| 1355 long v; | |
| 1356 real r; | |
| 1357 | |
| 1358 ea = ea.optimize(WANTvalue | WANTinterpret); | |
| 1359 if (ea.op == TOKvar) | |
| 1360 { | |
| 1361 sa = (cast(VarExp)ea).var; | |
| 1362 ea = null; | |
| 1363 goto Lsa; | |
| 1364 } | |
| 1365 if (ea.op == TOKfunction) | |
| 1366 { | |
| 1367 sa = (cast(FuncExp)ea).fd; | |
| 1368 ea = null; | |
| 1369 goto Lsa; | |
| 1370 } | |
| 1371 buf.writeByte('V'); | |
| 1372 if (ea.op == TOKtuple) | |
| 1373 { | |
| 1374 ea.error("tuple is not a valid template value argument"); | |
| 1375 continue; | |
| 1376 } | |
| 1377 static if (true) { | |
| 1378 /* Use deco that matches what it would be for a function parameter | |
| 1379 */ | |
| 1380 buf.writestring(ea.type.deco); | |
| 1381 } else { | |
| 1382 // Use type of parameter, not type of argument | |
| 1383 TemplateParameter tp = cast(TemplateParameter)tempdecl.parameters.data[i]; | |
| 1384 assert(tp); | |
| 1385 TemplateValueParameter tvp = tp.isTemplateValueParameter(); | |
| 1386 assert(tvp); | |
| 1387 buf.writestring(tvp.valType.deco); | |
| 1388 } | |
| 1389 ea.toMangleBuffer(buf); | |
| 1390 } | |
| 1391 else if (sa) | |
| 1392 { | |
| 1393 Lsa: | |
| 1394 buf.writeByte('S'); | |
| 1395 Declaration d = sa.isDeclaration(); | |
| 1396 if (d && (!d.type || !d.type.deco)) | |
| 1397 { | |
| 1398 error("forward reference of %s", d.toChars()); | |
| 1399 continue; | |
| 1400 } | |
| 1401 static if (false) { | |
| 1402 VarDeclaration v = sa.isVarDeclaration(); | |
| 1403 if (v && v.storage_class & STCmanifest) | |
| 1404 { | |
| 1405 ExpInitializer ei = v.init.isExpInitializer(); | |
| 1406 if (ei) | |
| 1407 { | |
| 1408 ea = ei.exp; | |
| 1409 goto Lea; | |
| 1410 } | |
| 1411 } | |
| 1412 } | |
| 1413 string p = sa.mangle(); | |
| 62 | 1414 ///buf.printf("%zu%s", p.length, p); |
| 1415 buf.printf("%su%s", p.length, p); | |
| 0 | 1416 } |
| 1417 else if (va) | |
| 1418 { | |
| 1419 assert(i + 1 == args.dim); // must be last one | |
| 1420 args = va.objects; | |
| 1421 i = -1; | |
| 1422 } | |
| 1423 else | |
| 1424 assert(0); | |
| 1425 } | |
| 1426 buf.writeByte('Z'); | |
| 1427 id = buf.toChars(); | |
| 1428 buf.data = null; | |
| 1429 //printf("\tgenIdent = %s\n", id); | |
| 1430 return new Identifier(id, TOKidentifier); | |
| 1431 } | |
| 1432 | |
| 72 | 1433 override TemplateInstance isTemplateInstance() { return this; } |
| 0 | 1434 |
| 72 | 1435 override AliasDeclaration isAliasDeclaration() |
| 0 | 1436 { |
| 1437 assert(false); | |
| 1438 } | |
|
20
1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
1439 } |