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[svn r5] Initial commit. Most things are very rough.
author lindquist
date Sat, 01 Sep 2007 21:43:27 +0200
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children dafae18f9c08
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0:a9e71648e74d 1:c53b6e3fe49a
1
2 // Compiler implementation of the D programming language
3 // Copyright (c) 1999-2007 by Digital Mars
4 // All Rights Reserved
5 // written by Walter Bright
6 // http://www.digitalmars.com
7 // License for redistribution is by either the Artistic License
8 // in artistic.txt, or the GNU General Public License in gnu.txt.
9 // See the included readme.txt for details.
10
11 #ifndef DMD_DECLARATION_H
12 #define DMD_DECLARATION_H
13
14 #ifdef __DMC__
15 #pragma once
16 #endif /* __DMC__ */
17
18 #include "dsymbol.h"
19 #include "lexer.h"
20 #include "mtype.h"
21
22 namespace llvm {
23 class Value;
24 }
25
26 struct Expression;
27 struct Statement;
28 struct LabelDsymbol;
29 struct Initializer;
30 struct Module;
31 struct InlineScanState;
32 struct ForeachStatement;
33 struct FuncDeclaration;
34 struct ExpInitializer;
35 struct StructDeclaration;
36 struct TupleType;
37 struct InterState;
38
39 enum PROT;
40 enum LINK;
41 enum TOK;
42 enum MATCH;
43
44 enum STC
45 {
46 STCundefined = 0,
47 STCstatic = 1,
48 STCextern = 2,
49 STCconst = 4,
50 STCfinal = 8,
51 STCabstract = 0x10,
52 STCparameter = 0x20,
53 STCfield = 0x40,
54 STCoverride = 0x80,
55 STCauto = 0x100,
56 STCsynchronized = 0x200,
57 STCdeprecated = 0x400,
58 STCin = 0x800, // in parameter
59 STCout = 0x1000, // out parameter
60 STClazy = 0x2000, // lazy parameter
61 STCforeach = 0x4000, // variable for foreach loop
62 STCcomdat = 0x8000, // should go into COMDAT record
63 STCvariadic = 0x10000, // variadic function argument
64 STCctorinit = 0x20000, // can only be set inside constructor
65 STCtemplateparameter = 0x40000, // template parameter
66 STCscope = 0x80000, // template parameter
67 STCinvariant = 0x100000,
68 STCref = 0x200000,
69 };
70
71 struct Match
72 {
73 int count; // number of matches found
74 MATCH last; // match level of lastf
75 FuncDeclaration *lastf; // last matching function we found
76 FuncDeclaration *nextf; // current matching function
77 FuncDeclaration *anyf; // pick a func, any func, to use for error recovery
78 };
79
80 void overloadResolveX(Match *m, FuncDeclaration *f, Expressions *arguments);
81 int overloadApply(FuncDeclaration *fstart,
82 int (*fp)(void *, FuncDeclaration *),
83 void *param);
84
85 /**************************************************************/
86
87 struct Declaration : Dsymbol
88 {
89 Type *type;
90 unsigned storage_class;
91 enum PROT protection;
92 enum LINK linkage;
93
94 Declaration(Identifier *id);
95 void semantic(Scope *sc);
96 char *kind();
97 unsigned size(Loc loc);
98
99 void emitComment(Scope *sc);
100 void toDocBuffer(OutBuffer *buf);
101
102 char *mangle();
103 int isStatic() { return storage_class & STCstatic; }
104 virtual int isStaticConstructor();
105 virtual int isStaticDestructor();
106 virtual int isDelete();
107 virtual int isDataseg();
108 virtual int isCodeseg();
109 int isCtorinit() { return storage_class & STCctorinit; }
110 int isFinal() { return storage_class & STCfinal; }
111 int isAbstract() { return storage_class & STCabstract; }
112 int isConst() { return storage_class & STCconst; }
113 int isAuto() { return storage_class & STCauto; }
114 int isScope() { return storage_class & (STCscope | STCauto); }
115 int isSynchronized() { return storage_class & STCsynchronized; }
116 int isParameter() { return storage_class & STCparameter; }
117 int isDeprecated() { return storage_class & STCdeprecated; }
118 int isOverride() { return storage_class & STCoverride; }
119
120 int isIn() { return storage_class & STCin; }
121 int isOut() { return storage_class & STCout; }
122 int isRef() { return storage_class & STCref; }
123
124 enum PROT prot();
125
126 Declaration *isDeclaration() { return this; }
127
128 virtual void toObjFile(); // compile to .obj file
129
130 // llvm stuff
131 llvm::Value* llvmValue;
132 };
133
134 /**************************************************************/
135
136 struct TupleDeclaration : Declaration
137 {
138 Objects *objects;
139 int isexp; // 1: expression tuple
140
141 TypeTuple *tupletype; // !=NULL if this is a type tuple
142
143 TupleDeclaration(Loc loc, Identifier *ident, Objects *objects);
144 Dsymbol *syntaxCopy(Dsymbol *);
145 char *kind();
146 Type *getType();
147 int needThis();
148
149 TupleDeclaration *isTupleDeclaration() { return this; }
150 };
151
152 /**************************************************************/
153
154 struct TypedefDeclaration : Declaration
155 {
156 Type *basetype;
157 Initializer *init;
158 int sem; // 0: semantic() has not been run
159 // 1: semantic() is in progress
160 // 2: semantic() has been run
161 // 3: semantic2() has been run
162 int inuse; // used to detect typedef cycles
163
164 TypedefDeclaration(Loc loc, Identifier *ident, Type *basetype, Initializer *init);
165 Dsymbol *syntaxCopy(Dsymbol *);
166 void semantic(Scope *sc);
167 void semantic2(Scope *sc);
168 char *mangle();
169 char *kind();
170 Type *getType();
171 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
172 #ifdef _DH
173 Type *htype;
174 Type *hbasetype;
175 #endif
176
177 void toDocBuffer(OutBuffer *buf);
178
179 void toObjFile(); // compile to .obj file
180 void toDebug();
181 int cvMember(unsigned char *p);
182
183 TypedefDeclaration *isTypedefDeclaration() { return this; }
184
185 Symbol *sinit;
186 Symbol *toInitializer();
187 };
188
189 /**************************************************************/
190
191 struct AliasDeclaration : Declaration
192 {
193 Dsymbol *aliassym;
194 Dsymbol *overnext; // next in overload list
195 int inSemantic;
196
197 AliasDeclaration(Loc loc, Identifier *ident, Type *type);
198 AliasDeclaration(Loc loc, Identifier *ident, Dsymbol *s);
199 Dsymbol *syntaxCopy(Dsymbol *);
200 void semantic(Scope *sc);
201 int overloadInsert(Dsymbol *s);
202 char *kind();
203 Type *getType();
204 Dsymbol *toAlias();
205 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
206 #ifdef _DH
207 Type *htype;
208 Dsymbol *haliassym;
209 #endif
210
211 void toDocBuffer(OutBuffer *buf);
212
213 AliasDeclaration *isAliasDeclaration() { return this; }
214 };
215
216 /**************************************************************/
217
218 struct VarDeclaration : Declaration
219 {
220 Initializer *init;
221 unsigned offset;
222 int noauto; // no auto semantics
223 int nestedref; // referenced by a lexically nested function
224 int inuse;
225 int ctorinit; // it has been initialized in a ctor
226 int onstack; // 1: it has been allocated on the stack
227 // 2: on stack, run destructor anyway
228 int canassign; // it can be assigned to
229 Dsymbol *aliassym; // if redone as alias to another symbol
230 Expression *value; // when interpreting, this is the value
231 // (NULL if value not determinable)
232
233 VarDeclaration(Loc loc, Type *t, Identifier *id, Initializer *init);
234 Dsymbol *syntaxCopy(Dsymbol *);
235 void semantic(Scope *sc);
236 void semantic2(Scope *sc);
237 char *kind();
238 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
239 #ifdef _DH
240 Type *htype;
241 Initializer *hinit;
242 #endif
243 int needThis();
244 int isImportedSymbol();
245 int isDataseg();
246 int hasPointers();
247 Expression *callAutoDtor();
248 ExpInitializer *getExpInitializer();
249 void checkCtorConstInit();
250 void checkNestedReference(Scope *sc, Loc loc);
251 Dsymbol *toAlias();
252
253 Symbol *toSymbol();
254 void toObjFile(); // compile to .obj file
255 int cvMember(unsigned char *p);
256
257 // Eliminate need for dynamic_cast
258 VarDeclaration *isVarDeclaration() { return (VarDeclaration *)this; }
259 };
260
261 /**************************************************************/
262
263 // This is a shell around a back end symbol
264
265 struct SymbolDeclaration : Declaration
266 {
267 Symbol *sym;
268 StructDeclaration *dsym;
269
270 SymbolDeclaration(Loc loc, Symbol *s, StructDeclaration *dsym);
271
272 Symbol *toSymbol();
273
274 // Eliminate need for dynamic_cast
275 SymbolDeclaration *isSymbolDeclaration() { return (SymbolDeclaration *)this; }
276 };
277
278 struct ClassInfoDeclaration : VarDeclaration
279 {
280 ClassDeclaration *cd;
281
282 ClassInfoDeclaration(ClassDeclaration *cd);
283 Dsymbol *syntaxCopy(Dsymbol *);
284 void semantic(Scope *sc);
285
286 void emitComment(Scope *sc);
287
288 Symbol *toSymbol();
289 };
290
291 struct ModuleInfoDeclaration : VarDeclaration
292 {
293 Module *mod;
294
295 ModuleInfoDeclaration(Module *mod);
296 Dsymbol *syntaxCopy(Dsymbol *);
297 void semantic(Scope *sc);
298
299 void emitComment(Scope *sc);
300
301 Symbol *toSymbol();
302 };
303
304 struct TypeInfoDeclaration : VarDeclaration
305 {
306 Type *tinfo;
307
308 TypeInfoDeclaration(Type *tinfo, int internal);
309 Dsymbol *syntaxCopy(Dsymbol *);
310 void semantic(Scope *sc);
311
312 void emitComment(Scope *sc);
313
314 Symbol *toSymbol();
315 void toObjFile(); // compile to .obj file
316 virtual void toDt(dt_t **pdt);
317
318 virtual TypeInfoDeclaration* isTypeInfoDeclaration() { return this; }
319 };
320
321 struct TypeInfoStructDeclaration : TypeInfoDeclaration
322 {
323 TypeInfoStructDeclaration(Type *tinfo);
324
325 void toDt(dt_t **pdt);
326 };
327
328 struct TypeInfoClassDeclaration : TypeInfoDeclaration
329 {
330 TypeInfoClassDeclaration(Type *tinfo);
331
332 void toDt(dt_t **pdt);
333 };
334
335 struct TypeInfoInterfaceDeclaration : TypeInfoDeclaration
336 {
337 TypeInfoInterfaceDeclaration(Type *tinfo);
338
339 void toDt(dt_t **pdt);
340 };
341
342 struct TypeInfoTypedefDeclaration : TypeInfoDeclaration
343 {
344 TypeInfoTypedefDeclaration(Type *tinfo);
345
346 void toDt(dt_t **pdt);
347 };
348
349 struct TypeInfoPointerDeclaration : TypeInfoDeclaration
350 {
351 TypeInfoPointerDeclaration(Type *tinfo);
352
353 void toDt(dt_t **pdt);
354 };
355
356 struct TypeInfoArrayDeclaration : TypeInfoDeclaration
357 {
358 TypeInfoArrayDeclaration(Type *tinfo);
359
360 void toDt(dt_t **pdt);
361 };
362
363 struct TypeInfoStaticArrayDeclaration : TypeInfoDeclaration
364 {
365 TypeInfoStaticArrayDeclaration(Type *tinfo);
366
367 void toDt(dt_t **pdt);
368 };
369
370 struct TypeInfoAssociativeArrayDeclaration : TypeInfoDeclaration
371 {
372 TypeInfoAssociativeArrayDeclaration(Type *tinfo);
373
374 void toDt(dt_t **pdt);
375 };
376
377 struct TypeInfoEnumDeclaration : TypeInfoDeclaration
378 {
379 TypeInfoEnumDeclaration(Type *tinfo);
380
381 void toDt(dt_t **pdt);
382 };
383
384 struct TypeInfoFunctionDeclaration : TypeInfoDeclaration
385 {
386 TypeInfoFunctionDeclaration(Type *tinfo);
387
388 void toDt(dt_t **pdt);
389 };
390
391 struct TypeInfoDelegateDeclaration : TypeInfoDeclaration
392 {
393 TypeInfoDelegateDeclaration(Type *tinfo);
394
395 void toDt(dt_t **pdt);
396 };
397
398 struct TypeInfoTupleDeclaration : TypeInfoDeclaration
399 {
400 TypeInfoTupleDeclaration(Type *tinfo);
401
402 void toDt(dt_t **pdt);
403 };
404
405 struct ThisDeclaration : VarDeclaration
406 {
407 ThisDeclaration(Type *t);
408 Dsymbol *syntaxCopy(Dsymbol *);
409 };
410
411 enum ILS
412 {
413 ILSuninitialized, // not computed yet
414 ILSno, // cannot inline
415 ILSyes, // can inline
416 };
417
418 /**************************************************************/
419
420 struct FuncDeclaration : Declaration
421 {
422 Array *fthrows; // Array of Type's of exceptions (not used)
423 Statement *frequire;
424 Statement *fensure;
425 Statement *fbody;
426
427 Identifier *outId; // identifier for out statement
428 VarDeclaration *vresult; // variable corresponding to outId
429 LabelDsymbol *returnLabel; // where the return goes
430
431 DsymbolTable *localsymtab; // used to prevent symbols in different
432 // scopes from having the same name
433 VarDeclaration *vthis; // 'this' parameter (member and nested)
434 VarDeclaration *v_arguments; // '_arguments' parameter
435 #if IN_GCC
436 VarDeclaration *v_argptr; // '_argptr' variable
437 #endif
438 Dsymbols *parameters; // Array of VarDeclaration's for parameters
439 DsymbolTable *labtab; // statement label symbol table
440 Declaration *overnext; // next in overload list
441 Loc endloc; // location of closing curly bracket
442 int vtblIndex; // for member functions, index into vtbl[]
443 int naked; // !=0 if naked
444 int inlineAsm; // !=0 if has inline assembler
445 ILS inlineStatus;
446 int inlineNest; // !=0 if nested inline
447 int cantInterpret; // !=0 if cannot interpret function
448 int semanticRun; // !=0 if semantic3() had been run
449 int nestedFrameRef; // !=0 if nested variables referenced frame ptr
450 ForeachStatement *fes; // if foreach body, this is the foreach
451 int introducing; // !=0 if 'introducing' function
452 Type *tintro; // if !=NULL, then this is the type
453 // of the 'introducing' function
454 // this one is overriding
455 int inferRetType; // !=0 if return type is to be inferred
456 Scope *scope; // !=NULL means context to use
457
458 // Things that should really go into Scope
459 int hasReturnExp; // 1 if there's a return exp; statement
460 // 2 if there's a throw statement
461 // 4 if there's an assert(0)
462 // 8 if there's inline asm
463
464 // Support for NRVO (named return value optimization)
465 int nrvo_can; // !=0 means we can do it
466 VarDeclaration *nrvo_var; // variable to replace with shidden
467 Symbol *shidden; // hidden pointer passed to function
468
469 FuncDeclaration(Loc loc, Loc endloc, Identifier *id, enum STC storage_class, Type *type);
470 Dsymbol *syntaxCopy(Dsymbol *);
471 void semantic(Scope *sc);
472 void semantic2(Scope *sc);
473 void semantic3(Scope *sc);
474 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
475 void bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs);
476 int overrides(FuncDeclaration *fd);
477 int overloadInsert(Dsymbol *s);
478 FuncDeclaration *overloadExactMatch(Type *t);
479 FuncDeclaration *overloadResolve(Loc loc, Expressions *arguments);
480 LabelDsymbol *searchLabel(Identifier *ident);
481 AggregateDeclaration *isThis();
482 AggregateDeclaration *isMember2();
483 int getLevel(Loc loc, FuncDeclaration *fd); // lexical nesting level difference
484 void appendExp(Expression *e);
485 void appendState(Statement *s);
486 char *mangle();
487 int isMain();
488 int isWinMain();
489 int isDllMain();
490 int isExport();
491 int isImportedSymbol();
492 int isAbstract();
493 int isCodeseg();
494 virtual int isNested();
495 int needThis();
496 virtual int isVirtual();
497 virtual int addPreInvariant();
498 virtual int addPostInvariant();
499 Expression *interpret(InterState *istate, Expressions *arguments);
500 void inlineScan();
501 int canInline(int hasthis, int hdrscan = 0);
502 Expression *doInline(InlineScanState *iss, Expression *ethis, Array *arguments);
503 char *kind();
504 void toDocBuffer(OutBuffer *buf);
505
506 static FuncDeclaration *genCfunc(Type *treturn, char *name);
507 static FuncDeclaration *genCfunc(Type *treturn, Identifier *id);
508
509 Symbol *toSymbol();
510 Symbol *toThunkSymbol(int offset); // thunk version
511 void toObjFile(); // compile to .obj file
512 int cvMember(unsigned char *p);
513
514 FuncDeclaration *isFuncDeclaration() { return this; }
515 };
516
517 struct FuncAliasDeclaration : FuncDeclaration
518 {
519 FuncDeclaration *funcalias;
520
521 FuncAliasDeclaration(FuncDeclaration *funcalias);
522
523 FuncAliasDeclaration *isFuncAliasDeclaration() { return this; }
524 char *kind();
525 Symbol *toSymbol();
526 };
527
528 struct FuncLiteralDeclaration : FuncDeclaration
529 {
530 enum TOK tok; // TOKfunction or TOKdelegate
531
532 FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, enum TOK tok,
533 ForeachStatement *fes);
534 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
535 Dsymbol *syntaxCopy(Dsymbol *);
536 int isNested();
537
538 FuncLiteralDeclaration *isFuncLiteralDeclaration() { return this; }
539 char *kind();
540 };
541
542 struct CtorDeclaration : FuncDeclaration
543 { Arguments *arguments;
544 int varargs;
545
546 CtorDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs);
547 Dsymbol *syntaxCopy(Dsymbol *);
548 void semantic(Scope *sc);
549 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
550 char *kind();
551 char *toChars();
552 int isVirtual();
553 int addPreInvariant();
554 int addPostInvariant();
555 void toDocBuffer(OutBuffer *buf);
556
557 CtorDeclaration *isCtorDeclaration() { return this; }
558 };
559
560 struct DtorDeclaration : FuncDeclaration
561 {
562 DtorDeclaration(Loc loc, Loc endloc);
563 Dsymbol *syntaxCopy(Dsymbol *);
564 void semantic(Scope *sc);
565 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
566 int isVirtual();
567 int addPreInvariant();
568 int addPostInvariant();
569 int overloadInsert(Dsymbol *s);
570 void emitComment(Scope *sc);
571
572 DtorDeclaration *isDtorDeclaration() { return this; }
573 };
574
575 struct StaticCtorDeclaration : FuncDeclaration
576 {
577 StaticCtorDeclaration(Loc loc, Loc endloc);
578 Dsymbol *syntaxCopy(Dsymbol *);
579 void semantic(Scope *sc);
580 AggregateDeclaration *isThis();
581 int isStaticConstructor();
582 int isVirtual();
583 int addPreInvariant();
584 int addPostInvariant();
585 void emitComment(Scope *sc);
586 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
587
588 StaticCtorDeclaration *isStaticCtorDeclaration() { return this; }
589 };
590
591 struct StaticDtorDeclaration : FuncDeclaration
592 {
593 StaticDtorDeclaration(Loc loc, Loc endloc);
594 Dsymbol *syntaxCopy(Dsymbol *);
595 void semantic(Scope *sc);
596 AggregateDeclaration *isThis();
597 int isStaticDestructor();
598 int isVirtual();
599 int addPreInvariant();
600 int addPostInvariant();
601 void emitComment(Scope *sc);
602 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
603
604 StaticDtorDeclaration *isStaticDtorDeclaration() { return this; }
605 };
606
607 struct InvariantDeclaration : FuncDeclaration
608 {
609 InvariantDeclaration(Loc loc, Loc endloc);
610 Dsymbol *syntaxCopy(Dsymbol *);
611 void semantic(Scope *sc);
612 int isVirtual();
613 int addPreInvariant();
614 int addPostInvariant();
615 void emitComment(Scope *sc);
616 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
617
618 InvariantDeclaration *isInvariantDeclaration() { return this; }
619 };
620
621
622 struct UnitTestDeclaration : FuncDeclaration
623 {
624 UnitTestDeclaration(Loc loc, Loc endloc);
625 Dsymbol *syntaxCopy(Dsymbol *);
626 void semantic(Scope *sc);
627 AggregateDeclaration *isThis();
628 int isVirtual();
629 int addPreInvariant();
630 int addPostInvariant();
631 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
632
633 UnitTestDeclaration *isUnitTestDeclaration() { return this; }
634 };
635
636 struct NewDeclaration : FuncDeclaration
637 { Arguments *arguments;
638 int varargs;
639
640 NewDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs);
641 Dsymbol *syntaxCopy(Dsymbol *);
642 void semantic(Scope *sc);
643 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
644 char *kind();
645 int isVirtual();
646 int addPreInvariant();
647 int addPostInvariant();
648
649 NewDeclaration *isNewDeclaration() { return this; }
650 };
651
652
653 struct DeleteDeclaration : FuncDeclaration
654 { Arguments *arguments;
655
656 DeleteDeclaration(Loc loc, Loc endloc, Arguments *arguments);
657 Dsymbol *syntaxCopy(Dsymbol *);
658 void semantic(Scope *sc);
659 void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
660 char *kind();
661 int isDelete();
662 int isVirtual();
663 int addPreInvariant();
664 int addPostInvariant();
665 #ifdef _DH
666 DeleteDeclaration *isDeleteDeclaration() { return this; }
667 #endif
668 };
669
670 #endif /* DMD_DECLARATION_H */