Mercurial > projects > ddmd
annotate dmd/EnumDeclaration.d @ 20:1628b221808d
Fleshed out more unimplemented methods.
| author | Robert Clipsham <robert@octarineparrot.com> |
|---|---|
| date | Wed, 07 Apr 2010 00:29:13 +0100 |
| parents | 10317f0c89a5 |
| children | fd4acc376c45 |
| rev | line source |
|---|---|
| 0 | 1 module dmd.EnumDeclaration; |
| 2 | |
| 3 import dmd.ScopeDsymbol; | |
| 4 import dmd.AddExp; | |
| 5 import dmd.Type; | |
| 6 import dmd.CmpExp; | |
| 7 import dmd.IntegerExp; | |
| 8 import dmd.EqualExp; | |
| 9 import dmd.TOK; | |
| 10 import dmd.Id; | |
| 11 import dmd.TY; | |
| 12 import dmd.DsymbolTable; | |
| 13 import dmd.STC; | |
| 14 import dmd.Expression; | |
| 15 import dmd.Identifier; | |
| 16 import dmd.Dsymbol; | |
| 17 import dmd.Scope; | |
| 18 import dmd.OutBuffer; | |
| 19 import dmd.HdrGenState; | |
| 20 import dmd.Global; | |
| 21 import dmd.Loc; | |
| 22 import dmd.TypeEnum; | |
| 23 import dmd.EnumMember; | |
| 24 import dmd.DYNCAST; | |
| 25 import dmd.WANT; | |
| 26 import dmd.Id; | |
| 27 import dmd.Lexer; | |
| 28 | |
| 29 import dmd.backend.SC; | |
| 30 import dmd.backend.FL; | |
| 31 import dmd.backend.Util; | |
| 32 import dmd.backend.Symbol; | |
| 33 import dmd.backend.Classsym; | |
| 34 import dmd.backend.SFL; | |
| 35 import dmd.backend.LIST; | |
| 36 import dmd.codegen.Util; | |
| 37 | |
| 38 import std.stdio : writef; | |
| 39 | |
| 40 class EnumDeclaration : ScopeDsymbol | |
| 41 { /* enum ident : memtype { ... } | |
| 42 */ | |
| 43 Type type; // the TypeEnum | |
| 44 Type memtype; // type of the members | |
| 45 | |
| 46 version (DMDV1) { | |
| 47 ulong maxval; | |
| 48 ulong minval; | |
| 49 ulong defaultval; // default initializer | |
| 50 } else { | |
| 51 Expression maxval; | |
| 52 Expression minval; | |
| 53 Expression defaultval; // default initializer | |
| 54 } | |
| 55 bool isdeprecated; | |
| 56 | |
| 57 this(Loc loc, Identifier id, Type memtype) | |
| 58 { | |
| 59 super(id); | |
| 60 this.loc = loc; | |
| 61 type = new TypeEnum(this); | |
| 62 this.memtype = memtype; | |
| 63 } | |
| 64 | |
| 65 Dsymbol syntaxCopy(Dsymbol s) | |
| 66 { | |
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67 Type t = null; |
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68 if (memtype) |
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69 t = memtype.syntaxCopy(); |
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70 |
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71 EnumDeclaration ed; |
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72 if (s) |
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73 { ed = cast(EnumDeclaration)s; |
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74 ed.memtype = t; |
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75 } |
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76 else |
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77 ed = new EnumDeclaration(loc, ident, t); |
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78 ScopeDsymbol.syntaxCopy(ed); |
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79 return ed; |
| 0 | 80 } |
| 81 | |
| 82 void semantic(Scope sc) | |
| 83 { | |
| 84 Type t; | |
| 85 Scope sce; | |
| 86 | |
| 87 //writef("EnumDeclaration.semantic(sd = %p, '%s') %s\n", sc.scopesym, sc.scopesym.toChars(), toChars()); | |
| 88 //writef("EnumDeclaration.semantic() %s\n", toChars()); | |
| 89 if (!members) // enum ident; | |
| 90 return; | |
| 91 | |
| 92 if (!memtype && !isAnonymous()) | |
| 93 { | |
| 94 // Set memtype if we can to reduce fwd reference errors | |
| 95 memtype = Type.tint32; // case 1) enum ident { ... } | |
| 96 } | |
| 97 | |
| 98 if (symtab) // if already done | |
| 99 { | |
| 100 if (!scope_) | |
| 101 return; // semantic() already completed | |
| 102 } | |
| 103 else | |
| 104 symtab = new DsymbolTable(); | |
| 105 | |
| 106 Scope scx = null; | |
| 107 if (scope_) | |
| 108 { sc = scope_; | |
| 109 scx = scope_; // save so we don't make redundant copies | |
| 110 scope_ = null; | |
| 111 } | |
| 112 | |
| 113 if (sc.stc & STC.STCdeprecated) | |
| 114 isdeprecated = true; | |
| 115 | |
| 116 parent = sc.parent; | |
| 117 | |
| 118 /* The separate, and distinct, cases are: | |
| 119 * 1. enum { ... } | |
| 120 * 2. enum : memtype { ... } | |
| 121 * 3. enum ident { ... } | |
| 122 * 4. enum ident : memtype { ... } | |
| 123 */ | |
| 124 | |
| 125 if (memtype) | |
| 126 { | |
| 127 memtype = memtype.semantic(loc, sc); | |
| 128 | |
| 129 /* Check to see if memtype is forward referenced | |
| 130 */ | |
| 131 if (memtype.ty == TY.Tenum) | |
| 132 { EnumDeclaration sym = cast(EnumDeclaration)memtype.toDsymbol(sc); | |
| 133 if (!sym.memtype || !sym.members || !sym.symtab || sym.scope_) | |
| 134 { | |
| 135 // memtype is forward referenced, so try again later | |
| 136 scope_ = scx ? scx : new Scope(sc); | |
| 137 scope_.setNoFree(); | |
| 138 scope_.module_.addDeferredSemantic(this); | |
| 139 writef("\tdeferring %s\n", toChars()); | |
| 140 return; | |
| 141 } | |
| 142 } | |
| 143 static if (false) { | |
| 144 // Decided to abandon this restriction for D 2.0 | |
| 145 if (!memtype.isintegral()) | |
| 146 { error("base type must be of integral type, not %s", memtype.toChars()); | |
| 147 memtype = Type.tint32; | |
| 148 } | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 type = type.semantic(loc, sc); | |
| 153 if (isAnonymous()) | |
| 154 sce = sc; | |
| 155 else | |
| 156 { sce = sc.push(this); | |
| 157 sce.parent = this; | |
| 158 } | |
| 159 if (members.dim == 0) | |
| 160 error("enum %s must have at least one member", toChars()); | |
| 161 int first = 1; | |
| 162 Expression elast = null; | |
| 163 for (int i = 0; i < members.dim; i++) | |
| 164 { | |
| 165 EnumMember em = (cast(Dsymbol)members.data[i]).isEnumMember(); | |
| 166 Expression e; | |
| 167 | |
| 168 if (!em) | |
| 169 /* The e.semantic(sce) can insert other symbols, such as | |
| 170 * template instances and function literals. | |
| 171 */ | |
| 172 continue; | |
| 173 | |
| 174 //printf(" Enum member '%s'\n",em.toChars()); | |
| 175 if (em.type) | |
| 176 em.type = em.type.semantic(em.loc, sce); | |
| 177 e = em.value; | |
| 178 if (e) | |
| 179 { | |
| 180 assert(e.dyncast() == DYNCAST.DYNCAST_EXPRESSION); | |
| 181 e = e.semantic(sce); | |
| 182 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 183 if (memtype) | |
| 184 { | |
| 185 e = e.implicitCastTo(sce, memtype); | |
| 186 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 187 if (!isAnonymous()) | |
| 188 e = e.castTo(sce, type); | |
| 189 t = memtype; | |
| 190 } | |
| 191 else if (em.type) | |
| 192 { | |
| 193 e = e.implicitCastTo(sce, em.type); | |
| 194 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 195 assert(isAnonymous()); | |
| 196 t = e.type; | |
| 197 } | |
| 198 else | |
| 199 t = e.type; | |
| 200 } | |
| 201 else if (first) | |
| 202 { | |
| 203 if (memtype) | |
| 204 t = memtype; | |
| 205 else if (em.type) | |
| 206 t = em.type; | |
| 207 else | |
| 208 t = Type.tint32; | |
| 209 e = new IntegerExp(em.loc, 0, Type.tint32); | |
| 210 e = e.implicitCastTo(sce, t); | |
| 211 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 212 if (!isAnonymous()) | |
| 213 e = e.castTo(sce, type); | |
| 214 } | |
| 215 else | |
| 216 { | |
| 217 // Set value to (elast + 1). | |
| 218 // But first check that (elast != t.max) | |
| 219 assert(elast); | |
| 220 e = new EqualExp(TOK.TOKequal, em.loc, elast, t.getProperty(Loc(0), Id.max)); | |
| 221 e = e.semantic(sce); | |
| 222 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 223 if (e.toInteger()) | |
| 224 error("overflow of enum value %s", elast.toChars()); | |
| 225 | |
| 226 // Now set e to (elast + 1) | |
| 227 e = new AddExp(em.loc, elast, new IntegerExp(em.loc, 1, Type.tint32)); | |
| 228 e = e.semantic(sce); | |
| 229 e = e.castTo(sce, elast.type); | |
| 230 e = e.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 231 } | |
| 232 elast = e; | |
| 233 em.value = e; | |
| 234 | |
| 235 // Add to symbol table only after evaluating 'value' | |
| 236 if (isAnonymous()) | |
| 237 { | |
| 238 /* Anonymous enum members get added to enclosing scope. | |
| 239 */ | |
| 240 for (Scope scxx = sce; scxx; scxx = scxx.enclosing) | |
| 241 { | |
| 242 if (scxx.scopesym) | |
| 243 { | |
| 244 if (!scxx.scopesym.symtab) | |
| 245 scxx.scopesym.symtab = new DsymbolTable(); | |
| 246 em.addMember(sce, scxx.scopesym, 1); | |
| 247 break; | |
| 248 } | |
| 249 } | |
| 250 } | |
| 251 else | |
| 252 em.addMember(sc, this, 1); | |
| 253 | |
| 254 /* Compute .min, .max and .default values. | |
| 255 * If enum doesn't have a name, we can never identify the enum type, | |
| 256 * so there is no purpose for a .min, .max or .default | |
| 257 */ | |
| 258 if (!isAnonymous()) | |
| 259 { | |
| 260 if (first) | |
| 261 { defaultval = e; | |
| 262 minval = e; | |
| 263 maxval = e; | |
| 264 } | |
| 265 else | |
| 266 { Expression ec; | |
| 267 | |
| 268 /* In order to work successfully with UDTs, | |
| 269 * build expressions to do the comparisons, | |
| 270 * and let the semantic analyzer and constant | |
| 271 * folder give us the result. | |
| 272 */ | |
| 273 | |
| 274 // Compute if(e < minval) | |
| 275 ec = new CmpExp(TOK.TOKlt, em.loc, e, minval); | |
| 276 ec = ec.semantic(sce); | |
| 277 ec = ec.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 278 if (ec.toInteger()) | |
| 279 minval = e; | |
| 280 | |
| 281 ec = new CmpExp(TOK.TOKgt, em.loc, e, maxval); | |
| 282 ec = ec.semantic(sce); | |
| 283 ec = ec.optimize(WANT.WANTvalue | WANT.WANTinterpret); | |
| 284 if (ec.toInteger()) | |
| 285 maxval = e; | |
| 286 } | |
| 287 } | |
| 288 first = 0; | |
| 289 } | |
| 290 //printf("defaultval = %lld\n", defaultval); | |
| 291 | |
| 292 //if (defaultval) printf("defaultval: %s %s\n", defaultval.toChars(), defaultval.type.toChars()); | |
| 293 if (sc != sce) | |
| 294 sce.pop(); | |
| 295 //members.print(); | |
| 296 } | |
| 297 | |
| 298 bool oneMember(Dsymbol* ps) | |
| 299 { | |
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300 if (isAnonymous()) |
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301 return Dsymbol.oneMembers(members, ps); |
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302 return Dsymbol.oneMember(ps); |
| 0 | 303 } |
| 304 | |
| 305 void toCBuffer(OutBuffer buf, HdrGenState* hgs) | |
| 306 { | |
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307 int i; |
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308 |
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309 buf.writestring("enum "); |
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310 if (ident) |
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311 { buf.writestring(ident.toChars()); |
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312 buf.writeByte(' '); |
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313 } |
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314 if (memtype) |
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315 { |
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316 buf.writestring(": "); |
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317 memtype.toCBuffer(buf, null, hgs); |
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318 } |
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319 if (!members) |
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320 { |
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321 buf.writeByte(';'); |
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322 buf.writenl(); |
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323 return; |
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324 } |
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325 buf.writenl(); |
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326 buf.writeByte('{'); |
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327 buf.writenl(); |
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328 for (i = 0; i < members.dim; i++) |
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329 { |
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330 EnumMember em = (cast(Dsymbol)members.data[i]).isEnumMember(); |
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331 if (!em) |
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332 continue; |
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333 //buf.writestring(" "); |
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334 em.toCBuffer(buf, hgs); |
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335 buf.writeByte(','); |
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336 buf.writenl(); |
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337 } |
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338 buf.writeByte('}'); |
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339 buf.writenl(); |
| 0 | 340 } |
| 341 | |
| 342 Type getType() | |
| 343 { | |
| 344 return type; | |
| 345 } | |
| 346 | |
| 347 string kind() | |
| 348 { | |
| 349 return "enum"; | |
| 350 } | |
| 351 | |
| 352 version (DMDV2) { | |
| 353 Dsymbol search(Loc, Identifier ident, int flags) | |
| 354 { | |
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355 //printf("%s.EnumDeclaration.search('%s')\n", toChars(), ident.toChars()); |
| 0 | 356 if (scope_) |
| 357 // Try one last time to resolve this enum | |
| 358 semantic(scope_); | |
| 359 | |
| 360 if (!members || !symtab || scope_) | |
| 361 { | |
| 362 error("is forward referenced when looking for '%s'", ident.toChars()); | |
| 363 //*(char*)0=0; | |
| 364 return null; | |
| 365 } | |
| 366 | |
| 367 return ScopeDsymbol.search(loc, ident, flags); | |
| 368 } | |
| 369 } | |
| 370 bool isDeprecated() // is Dsymbol deprecated? | |
| 371 { | |
| 372 return isdeprecated; | |
| 373 } | |
| 374 | |
| 375 void emitComment(Scope sc) | |
| 376 { | |
| 377 assert(false); | |
| 378 } | |
| 379 | |
| 380 void toDocBuffer(OutBuffer buf) | |
| 381 { | |
| 382 assert(false); | |
| 383 } | |
| 384 | |
| 385 EnumDeclaration isEnumDeclaration() { return this; } | |
| 386 | |
| 387 void toObjFile(int multiobj) // compile to .obj file | |
| 388 { | |
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389 //printf("EnumDeclaration.toObjFile('%s')\n", toChars()); |
| 0 | 390 version (DMDV2) { |
| 391 if (isAnonymous()) | |
| 392 return; | |
| 393 } | |
| 394 | |
| 395 if (global.params.symdebug) | |
| 396 toDebug(); | |
| 397 | |
| 398 type.getTypeInfo(null); // generate TypeInfo | |
| 399 | |
| 400 TypeEnum tc = cast(TypeEnum)type; | |
| 401 if (!tc.sym.defaultval || type.isZeroInit(Loc(0))) { | |
| 402 ; | |
| 403 } else { | |
| 404 SC scclass = SCglobal; | |
| 405 if (inTemplateInstance()) | |
| 406 scclass = SCcomdat; | |
| 407 | |
| 408 // Generate static initializer | |
| 409 toInitializer(); | |
| 410 sinit.Sclass = scclass; | |
| 411 sinit.Sfl = FLdata; | |
| 412 version (ELFOBJ) { // Burton | |
| 413 sinit.Sseg = Segment.CDATA; | |
| 414 } | |
| 415 version (MACHOBJ) { | |
| 416 sinit.Sseg = Segment.DATA; | |
| 417 } | |
| 418 version (DMDV1) { | |
| 419 dtnbytes(&sinit.Sdt, tc.size(0), cast(char*)&tc.sym.defaultval); | |
|
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1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
420 //sinit.Sdt = tc.sym.init.toDt(); |
| 0 | 421 } |
| 422 version (DMDV2) { | |
| 423 tc.sym.defaultval.toDt(&sinit.Sdt); | |
| 424 } | |
| 425 outdata(sinit); | |
| 426 } | |
| 427 } | |
| 428 | |
| 429 void toDebug() | |
| 430 { | |
| 431 assert(false); | |
| 432 } | |
| 433 | |
| 434 int cvMember(ubyte* p) | |
| 435 { | |
| 436 assert(false); | |
| 437 } | |
| 438 | |
| 439 Symbol* sinit; | |
| 440 | |
| 441 Symbol* toInitializer() | |
| 442 { | |
| 443 Symbol* s; | |
| 444 Classsym* stag; | |
| 445 | |
| 446 if (!sinit) | |
| 447 { | |
| 448 stag = fake_classsym(Id.ClassInfo); | |
| 449 Identifier ident_save = ident; | |
| 450 if (!ident) | |
| 451 ident = Lexer.uniqueId("__enum"); | |
| 452 s = toSymbolX("__init", SCextern, stag.Stype, "Z"); | |
| 453 ident = ident_save; | |
| 454 s.Sfl = FLextern; | |
| 455 s.Sflags |= SFLnodebug; | |
| 456 slist_add(s); | |
| 457 sinit = s; | |
| 458 } | |
| 459 | |
| 460 return sinit; | |
| 461 } | |
|
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1628b221808d
Fleshed out more unimplemented methods.
Robert Clipsham <robert@octarineparrot.com>
parents:
0
diff
changeset
|
462 }; |