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12 | |
13 | #include "clang/AST/TypeLoc.h" |
14 | #include "clang/AST/ASTContext.h" |
15 | #include "clang/AST/Expr.h" |
16 | #include "clang/AST/NestedNameSpecifier.h" |
17 | #include "clang/AST/TemplateBase.h" |
18 | #include "clang/AST/TemplateName.h" |
19 | #include "clang/AST/TypeLocVisitor.h" |
20 | #include "clang/Basic/SourceLocation.h" |
21 | #include "clang/Basic/Specifiers.h" |
22 | #include "llvm/Support/ErrorHandling.h" |
23 | #include "llvm/Support/MathExtras.h" |
24 | #include <algorithm> |
25 | #include <cassert> |
26 | #include <cstdint> |
27 | #include <cstring> |
28 | |
29 | using namespace clang; |
30 | |
31 | static const unsigned TypeLocMaxDataAlign = alignof(void *); |
32 | |
33 | |
34 | |
35 | |
36 | |
37 | namespace { |
38 | |
39 | class TypeLocRanger : public TypeLocVisitor<TypeLocRanger, SourceRange> { |
40 | public: |
41 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
42 | #define TYPELOC(CLASS, PARENT) \ |
43 | SourceRange Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \ |
44 | return TyLoc.getLocalSourceRange(); \ |
45 | } |
46 | #include "clang/AST/TypeLocNodes.def" |
47 | }; |
48 | |
49 | } |
50 | |
51 | SourceRange TypeLoc::getLocalSourceRangeImpl(TypeLoc TL) { |
52 | if (TL.isNull()) return SourceRange(); |
53 | return TypeLocRanger().Visit(TL); |
54 | } |
55 | |
56 | namespace { |
57 | |
58 | class TypeAligner : public TypeLocVisitor<TypeAligner, unsigned> { |
59 | public: |
60 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
61 | #define TYPELOC(CLASS, PARENT) \ |
62 | unsigned Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \ |
63 | return TyLoc.getLocalDataAlignment(); \ |
64 | } |
65 | #include "clang/AST/TypeLocNodes.def" |
66 | }; |
67 | |
68 | } |
69 | |
70 | |
71 | unsigned TypeLoc::getLocalAlignmentForType(QualType Ty) { |
72 | if (Ty.isNull()) return 1; |
73 | return TypeAligner().Visit(TypeLoc(Ty, nullptr)); |
74 | } |
75 | |
76 | namespace { |
77 | |
78 | class TypeSizer : public TypeLocVisitor<TypeSizer, unsigned> { |
79 | public: |
80 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
81 | #define TYPELOC(CLASS, PARENT) \ |
82 | unsigned Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \ |
83 | return TyLoc.getLocalDataSize(); \ |
84 | } |
85 | #include "clang/AST/TypeLocNodes.def" |
86 | }; |
87 | |
88 | } |
89 | |
90 | |
91 | unsigned TypeLoc::getFullDataSizeForType(QualType Ty) { |
92 | unsigned Total = 0; |
93 | TypeLoc TyLoc(Ty, nullptr); |
94 | unsigned MaxAlign = 1; |
95 | while (!TyLoc.isNull()) { |
96 | unsigned Align = getLocalAlignmentForType(TyLoc.getType()); |
97 | MaxAlign = std::max(Align, MaxAlign); |
98 | Total = llvm::alignTo(Total, Align); |
99 | Total += TypeSizer().Visit(TyLoc); |
100 | TyLoc = TyLoc.getNextTypeLoc(); |
101 | } |
102 | Total = llvm::alignTo(Total, MaxAlign); |
103 | return Total; |
104 | } |
105 | |
106 | namespace { |
107 | |
108 | class NextLoc : public TypeLocVisitor<NextLoc, TypeLoc> { |
109 | public: |
110 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
111 | #define TYPELOC(CLASS, PARENT) \ |
112 | TypeLoc Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \ |
113 | return TyLoc.getNextTypeLoc(); \ |
114 | } |
115 | #include "clang/AST/TypeLocNodes.def" |
116 | }; |
117 | |
118 | } |
119 | |
120 | |
121 | |
122 | TypeLoc TypeLoc::getNextTypeLocImpl(TypeLoc TL) { |
123 | return NextLoc().Visit(TL); |
124 | } |
125 | |
126 | |
127 | |
128 | |
129 | void TypeLoc::initializeImpl(ASTContext &Context, TypeLoc TL, |
130 | SourceLocation Loc) { |
131 | while (true) { |
132 | switch (TL.getTypeLocClass()) { |
133 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
134 | #define TYPELOC(CLASS, PARENT) \ |
135 | case CLASS: { \ |
136 | CLASS##TypeLoc TLCasted = TL.castAs<CLASS##TypeLoc>(); \ |
137 | TLCasted.initializeLocal(Context, Loc); \ |
138 | TL = TLCasted.getNextTypeLoc(); \ |
139 | if (!TL) return; \ |
140 | continue; \ |
141 | } |
142 | #include "clang/AST/TypeLocNodes.def" |
143 | } |
144 | } |
145 | } |
146 | |
147 | namespace { |
148 | |
149 | class TypeLocCopier : public TypeLocVisitor<TypeLocCopier> { |
150 | TypeLoc Source; |
151 | |
152 | public: |
153 | TypeLocCopier(TypeLoc source) : Source(source) {} |
154 | |
155 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
156 | #define TYPELOC(CLASS, PARENT) \ |
157 | void Visit##CLASS##TypeLoc(CLASS##TypeLoc dest) { \ |
158 | dest.copyLocal(Source.castAs<CLASS##TypeLoc>()); \ |
159 | } |
160 | #include "clang/AST/TypeLocNodes.def" |
161 | }; |
162 | |
163 | } |
164 | |
165 | void TypeLoc::copy(TypeLoc other) { |
166 | assert(getFullDataSize() == other.getFullDataSize()); |
167 | |
168 | |
169 | |
170 | |
171 | if (reinterpret_cast<uintptr_t>(Data) == |
172 | llvm::alignTo(reinterpret_cast<uintptr_t>(Data), |
173 | TypeLocMaxDataAlign) && |
174 | reinterpret_cast<uintptr_t>(other.Data) == |
175 | llvm::alignTo(reinterpret_cast<uintptr_t>(other.Data), |
176 | TypeLocMaxDataAlign)) { |
177 | memcpy(Data, other.Data, getFullDataSize()); |
178 | return; |
179 | } |
180 | |
181 | |
182 | TypeLoc TL(getType(), Data); |
183 | do { |
184 | TypeLocCopier(other).Visit(TL); |
185 | other = other.getNextTypeLoc(); |
186 | } while ((TL = TL.getNextTypeLoc())); |
187 | } |
188 | |
189 | SourceLocation TypeLoc::getBeginLoc() const { |
190 | TypeLoc Cur = *this; |
191 | TypeLoc LeftMost = Cur; |
192 | while (true) { |
193 | switch (Cur.getTypeLocClass()) { |
194 | case Elaborated: |
195 | LeftMost = Cur; |
196 | break; |
197 | case FunctionProto: |
198 | if (Cur.castAs<FunctionProtoTypeLoc>().getTypePtr() |
199 | ->hasTrailingReturn()) { |
200 | LeftMost = Cur; |
201 | break; |
202 | } |
203 | LLVM_FALLTHROUGH; |
204 | case FunctionNoProto: |
205 | case ConstantArray: |
206 | case DependentSizedArray: |
207 | case IncompleteArray: |
208 | case VariableArray: |
209 | |
210 | case Qualified: |
211 | Cur = Cur.getNextTypeLoc(); |
212 | continue; |
213 | default: |
214 | if (Cur.getLocalSourceRange().getBegin().isValid()) |
215 | LeftMost = Cur; |
216 | Cur = Cur.getNextTypeLoc(); |
217 | if (Cur.isNull()) |
218 | break; |
219 | continue; |
220 | } |
221 | break; |
222 | } |
223 | return LeftMost.getLocalSourceRange().getBegin(); |
224 | } |
225 | |
226 | SourceLocation TypeLoc::getEndLoc() const { |
227 | TypeLoc Cur = *this; |
228 | TypeLoc Last; |
229 | while (true) { |
230 | switch (Cur.getTypeLocClass()) { |
231 | default: |
232 | if (!Last) |
233 | Last = Cur; |
234 | return Last.getLocalSourceRange().getEnd(); |
235 | case Paren: |
236 | case ConstantArray: |
237 | case DependentSizedArray: |
238 | case IncompleteArray: |
239 | case VariableArray: |
240 | case FunctionNoProto: |
241 | Last = Cur; |
242 | break; |
243 | case FunctionProto: |
244 | if (Cur.castAs<FunctionProtoTypeLoc>().getTypePtr()->hasTrailingReturn()) |
245 | Last = TypeLoc(); |
246 | else |
247 | Last = Cur; |
248 | break; |
249 | case Pointer: |
250 | case BlockPointer: |
251 | case MemberPointer: |
252 | case LValueReference: |
253 | case RValueReference: |
254 | case PackExpansion: |
255 | if (!Last) |
256 | Last = Cur; |
257 | break; |
258 | case Qualified: |
259 | case Elaborated: |
260 | break; |
261 | } |
262 | Cur = Cur.getNextTypeLoc(); |
263 | } |
264 | } |
265 | |
266 | namespace { |
267 | |
268 | struct TSTChecker : public TypeLocVisitor<TSTChecker, bool> { |
269 | |
270 | static bool isTypeSpec(TypeSpecTypeLoc _) { return true; } |
271 | static bool isTypeSpec(TypeLoc _) { return false; } |
272 | |
273 | #define ABSTRACT_TYPELOC(CLASS, PARENT) |
274 | #define TYPELOC(CLASS, PARENT) \ |
275 | bool Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc) { \ |
276 | return isTypeSpec(TyLoc); \ |
277 | } |
278 | #include "clang/AST/TypeLocNodes.def" |
279 | }; |
280 | |
281 | } |
282 | |
283 | |
284 | |
285 | |
286 | |
287 | |
288 | |
289 | |
290 | |
291 | bool TypeSpecTypeLoc::isKind(const TypeLoc &TL) { |
292 | if (TL.getType().hasLocalQualifiers()) return false; |
293 | return TSTChecker().Visit(TL); |
294 | } |
295 | |
296 | |
297 | |
298 | |
299 | SourceRange TypeOfExprTypeLoc::getLocalSourceRange() const { |
300 | if (getRParenLoc().isValid()) |
301 | return SourceRange(getTypeofLoc(), getRParenLoc()); |
302 | else |
303 | return SourceRange(getTypeofLoc(), |
304 | getUnderlyingExpr()->getSourceRange().getEnd()); |
305 | } |
306 | |
307 | |
308 | TypeSpecifierType BuiltinTypeLoc::getWrittenTypeSpec() const { |
309 | if (needsExtraLocalData()) |
310 | return static_cast<TypeSpecifierType>(getWrittenBuiltinSpecs().Type); |
311 | switch (getTypePtr()->getKind()) { |
312 | case BuiltinType::Void: |
313 | return TST_void; |
314 | case BuiltinType::Bool: |
315 | return TST_bool; |
316 | case BuiltinType::Char_U: |
317 | case BuiltinType::Char_S: |
318 | return TST_char; |
319 | case BuiltinType::Char8: |
320 | return TST_char8; |
321 | case BuiltinType::Char16: |
322 | return TST_char16; |
323 | case BuiltinType::Char32: |
324 | return TST_char32; |
325 | case BuiltinType::WChar_S: |
326 | case BuiltinType::WChar_U: |
327 | return TST_wchar; |
328 | case BuiltinType::UChar: |
329 | case BuiltinType::UShort: |
330 | case BuiltinType::UInt: |
331 | case BuiltinType::ULong: |
332 | case BuiltinType::ULongLong: |
333 | case BuiltinType::UInt128: |
334 | case BuiltinType::SChar: |
335 | case BuiltinType::Short: |
336 | case BuiltinType::Int: |
337 | case BuiltinType::Long: |
338 | case BuiltinType::LongLong: |
339 | case BuiltinType::Int128: |
340 | case BuiltinType::Half: |
341 | case BuiltinType::Float: |
342 | case BuiltinType::Double: |
343 | case BuiltinType::LongDouble: |
344 | case BuiltinType::Float16: |
345 | case BuiltinType::Float128: |
346 | case BuiltinType::ShortAccum: |
347 | case BuiltinType::Accum: |
348 | case BuiltinType::LongAccum: |
349 | case BuiltinType::UShortAccum: |
350 | case BuiltinType::UAccum: |
351 | case BuiltinType::ULongAccum: |
352 | case BuiltinType::ShortFract: |
353 | case BuiltinType::Fract: |
354 | case BuiltinType::LongFract: |
355 | case BuiltinType::UShortFract: |
356 | case BuiltinType::UFract: |
357 | case BuiltinType::ULongFract: |
358 | case BuiltinType::SatShortAccum: |
359 | case BuiltinType::SatAccum: |
360 | case BuiltinType::SatLongAccum: |
361 | case BuiltinType::SatUShortAccum: |
362 | case BuiltinType::SatUAccum: |
363 | case BuiltinType::SatULongAccum: |
364 | case BuiltinType::SatShortFract: |
365 | case BuiltinType::SatFract: |
366 | case BuiltinType::SatLongFract: |
367 | case BuiltinType::SatUShortFract: |
368 | case BuiltinType::SatUFract: |
369 | case BuiltinType::SatULongFract: |
370 | llvm_unreachable("Builtin type needs extra local data!"); |
371 | |
372 | |
373 | case BuiltinType::NullPtr: |
374 | case BuiltinType::Overload: |
375 | case BuiltinType::Dependent: |
376 | case BuiltinType::BoundMember: |
377 | case BuiltinType::UnknownAny: |
378 | case BuiltinType::ARCUnbridgedCast: |
379 | case BuiltinType::PseudoObject: |
380 | case BuiltinType::ObjCId: |
381 | case BuiltinType::ObjCClass: |
382 | case BuiltinType::ObjCSel: |
383 | #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ |
384 | case BuiltinType::Id: |
385 | #include "clang/Basic/OpenCLImageTypes.def" |
386 | #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ |
387 | case BuiltinType::Id: |
388 | #include "clang/Basic/OpenCLExtensionTypes.def" |
389 | case BuiltinType::OCLSampler: |
390 | case BuiltinType::OCLEvent: |
391 | case BuiltinType::OCLClkEvent: |
392 | case BuiltinType::OCLQueue: |
393 | case BuiltinType::OCLReserveID: |
394 | case BuiltinType::BuiltinFn: |
395 | case BuiltinType::OMPArraySection: |
396 | return TST_unspecified; |
397 | } |
398 | |
399 | llvm_unreachable("Invalid BuiltinType Kind!"); |
400 | } |
401 | |
402 | TypeLoc TypeLoc::IgnoreParensImpl(TypeLoc TL) { |
403 | while (ParenTypeLoc PTL = TL.getAs<ParenTypeLoc>()) |
404 | TL = PTL.getInnerLoc(); |
405 | return TL; |
406 | } |
407 | |
408 | SourceLocation TypeLoc::findNullabilityLoc() const { |
409 | if (auto ATL = getAs<AttributedTypeLoc>()) { |
410 | const Attr *A = ATL.getAttr(); |
411 | if (A && (isa<TypeNullableAttr>(A) || isa<TypeNonNullAttr>(A) || |
412 | isa<TypeNullUnspecifiedAttr>(A))) |
413 | return A->getLocation(); |
414 | } |
415 | |
416 | return {}; |
417 | } |
418 | |
419 | TypeLoc TypeLoc::findExplicitQualifierLoc() const { |
420 | |
421 | if (auto qual = getAs<QualifiedTypeLoc>()) |
422 | return qual; |
423 | |
424 | TypeLoc loc = IgnoreParens(); |
425 | |
426 | |
427 | if (auto attr = loc.getAs<AttributedTypeLoc>()) { |
428 | if (attr.isQualifier()) return attr; |
429 | return attr.getModifiedLoc().findExplicitQualifierLoc(); |
430 | } |
431 | |
432 | |
433 | if (auto atomic = loc.getAs<AtomicTypeLoc>()) { |
434 | return atomic; |
435 | } |
436 | |
437 | return {}; |
438 | } |
439 | |
440 | void ObjCTypeParamTypeLoc::initializeLocal(ASTContext &Context, |
441 | SourceLocation Loc) { |
442 | setNameLoc(Loc); |
443 | if (!getNumProtocols()) return; |
444 | |
445 | setProtocolLAngleLoc(Loc); |
446 | setProtocolRAngleLoc(Loc); |
447 | for (unsigned i = 0, e = getNumProtocols(); i != e; ++i) |
448 | setProtocolLoc(i, Loc); |
449 | } |
450 | |
451 | void ObjCObjectTypeLoc::initializeLocal(ASTContext &Context, |
452 | SourceLocation Loc) { |
453 | setHasBaseTypeAsWritten(true); |
454 | setTypeArgsLAngleLoc(Loc); |
455 | setTypeArgsRAngleLoc(Loc); |
456 | for (unsigned i = 0, e = getNumTypeArgs(); i != e; ++i) { |
457 | setTypeArgTInfo(i, |
458 | Context.getTrivialTypeSourceInfo( |
459 | getTypePtr()->getTypeArgsAsWritten()[i], Loc)); |
460 | } |
461 | setProtocolLAngleLoc(Loc); |
462 | setProtocolRAngleLoc(Loc); |
463 | for (unsigned i = 0, e = getNumProtocols(); i != e; ++i) |
464 | setProtocolLoc(i, Loc); |
465 | } |
466 | |
467 | void TypeOfTypeLoc::initializeLocal(ASTContext &Context, |
468 | SourceLocation Loc) { |
469 | TypeofLikeTypeLoc<TypeOfTypeLoc, TypeOfType, TypeOfTypeLocInfo> |
470 | ::initializeLocal(Context, Loc); |
471 | this->getLocalData()->UnderlyingTInfo = Context.getTrivialTypeSourceInfo( |
472 | getUnderlyingType(), Loc); |
473 | } |
474 | |
475 | void UnaryTransformTypeLoc::initializeLocal(ASTContext &Context, |
476 | SourceLocation Loc) { |
477 | setKWLoc(Loc); |
478 | setRParenLoc(Loc); |
479 | setLParenLoc(Loc); |
480 | this->setUnderlyingTInfo( |
481 | Context.getTrivialTypeSourceInfo(getTypePtr()->getBaseType(), Loc)); |
482 | } |
483 | |
484 | void ElaboratedTypeLoc::initializeLocal(ASTContext &Context, |
485 | SourceLocation Loc) { |
486 | setElaboratedKeywordLoc(Loc); |
487 | NestedNameSpecifierLocBuilder Builder; |
488 | Builder.MakeTrivial(Context, getTypePtr()->getQualifier(), Loc); |
489 | setQualifierLoc(Builder.getWithLocInContext(Context)); |
490 | } |
491 | |
492 | void DependentNameTypeLoc::initializeLocal(ASTContext &Context, |
493 | SourceLocation Loc) { |
494 | setElaboratedKeywordLoc(Loc); |
495 | NestedNameSpecifierLocBuilder Builder; |
496 | Builder.MakeTrivial(Context, getTypePtr()->getQualifier(), Loc); |
497 | setQualifierLoc(Builder.getWithLocInContext(Context)); |
498 | setNameLoc(Loc); |
499 | } |
500 | |
501 | void |
502 | DependentTemplateSpecializationTypeLoc::initializeLocal(ASTContext &Context, |
503 | SourceLocation Loc) { |
504 | setElaboratedKeywordLoc(Loc); |
505 | if (getTypePtr()->getQualifier()) { |
506 | NestedNameSpecifierLocBuilder Builder; |
507 | Builder.MakeTrivial(Context, getTypePtr()->getQualifier(), Loc); |
508 | setQualifierLoc(Builder.getWithLocInContext(Context)); |
509 | } else { |
510 | setQualifierLoc(NestedNameSpecifierLoc()); |
511 | } |
512 | setTemplateKeywordLoc(Loc); |
513 | setTemplateNameLoc(Loc); |
514 | setLAngleLoc(Loc); |
515 | setRAngleLoc(Loc); |
516 | TemplateSpecializationTypeLoc::initializeArgLocs(Context, getNumArgs(), |
517 | getTypePtr()->getArgs(), |
518 | getArgInfos(), Loc); |
519 | } |
520 | |
521 | void TemplateSpecializationTypeLoc::initializeArgLocs(ASTContext &Context, |
522 | unsigned NumArgs, |
523 | const TemplateArgument *Args, |
524 | TemplateArgumentLocInfo *ArgInfos, |
525 | SourceLocation Loc) { |
526 | for (unsigned i = 0, e = NumArgs; i != e; ++i) { |
527 | switch (Args[i].getKind()) { |
528 | case TemplateArgument::Null: |
529 | llvm_unreachable("Impossible TemplateArgument"); |
530 | |
531 | case TemplateArgument::Integral: |
532 | case TemplateArgument::Declaration: |
533 | case TemplateArgument::NullPtr: |
534 | ArgInfos[i] = TemplateArgumentLocInfo(); |
535 | break; |
536 | |
537 | case TemplateArgument::Expression: |
538 | ArgInfos[i] = TemplateArgumentLocInfo(Args[i].getAsExpr()); |
539 | break; |
540 | |
541 | case TemplateArgument::Type: |
542 | ArgInfos[i] = TemplateArgumentLocInfo( |
543 | Context.getTrivialTypeSourceInfo(Args[i].getAsType(), |
544 | Loc)); |
545 | break; |
546 | |
547 | case TemplateArgument::Template: |
548 | case TemplateArgument::TemplateExpansion: { |
549 | NestedNameSpecifierLocBuilder Builder; |
550 | TemplateName Template = Args[i].getAsTemplateOrTemplatePattern(); |
551 | if (DependentTemplateName *DTN = Template.getAsDependentTemplateName()) |
552 | Builder.MakeTrivial(Context, DTN->getQualifier(), Loc); |
553 | else if (QualifiedTemplateName *QTN = Template.getAsQualifiedTemplateName()) |
554 | Builder.MakeTrivial(Context, QTN->getQualifier(), Loc); |
555 | |
556 | ArgInfos[i] = TemplateArgumentLocInfo( |
557 | Builder.getWithLocInContext(Context), Loc, |
558 | Args[i].getKind() == TemplateArgument::Template ? SourceLocation() |
559 | : Loc); |
560 | break; |
561 | } |
562 | |
563 | case TemplateArgument::Pack: |
564 | ArgInfos[i] = TemplateArgumentLocInfo(); |
565 | break; |
566 | } |
567 | } |
568 | } |
569 | |