1 | //===- TemplateBase.cpp - Common template AST class implementation --------===// |
---|---|
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file implements common classes used throughout C++ template |
10 | // representations. |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #include "clang/AST/TemplateBase.h" |
15 | #include "clang/AST/ASTContext.h" |
16 | #include "clang/AST/Decl.h" |
17 | #include "clang/AST/DeclBase.h" |
18 | #include "clang/AST/DeclTemplate.h" |
19 | #include "clang/AST/DependenceFlags.h" |
20 | #include "clang/AST/Expr.h" |
21 | #include "clang/AST/ExprCXX.h" |
22 | #include "clang/AST/PrettyPrinter.h" |
23 | #include "clang/AST/TemplateName.h" |
24 | #include "clang/AST/Type.h" |
25 | #include "clang/AST/TypeLoc.h" |
26 | #include "clang/Basic/Diagnostic.h" |
27 | #include "clang/Basic/LLVM.h" |
28 | #include "clang/Basic/LangOptions.h" |
29 | #include "clang/Basic/SourceLocation.h" |
30 | #include "llvm/ADT/APSInt.h" |
31 | #include "llvm/ADT/FoldingSet.h" |
32 | #include "llvm/ADT/StringExtras.h" |
33 | #include "llvm/Support/Compiler.h" |
34 | #include "llvm/Support/ErrorHandling.h" |
35 | #include "llvm/Support/raw_ostream.h" |
36 | #include <cassert> |
37 | #include <cstddef> |
38 | #include <cstdint> |
39 | #include <cstring> |
40 | |
41 | using namespace clang; |
42 | |
43 | /// Print a template integral argument value. |
44 | /// |
45 | /// \param TemplArg the TemplateArgument instance to print. |
46 | /// |
47 | /// \param Out the raw_ostream instance to use for printing. |
48 | /// |
49 | /// \param Policy the printing policy for EnumConstantDecl printing. |
50 | /// |
51 | /// \param IncludeType If set, ensure that the type of the expression printed |
52 | /// matches the type of the template argument. |
53 | static void printIntegral(const TemplateArgument &TemplArg, raw_ostream &Out, |
54 | const PrintingPolicy &Policy, bool IncludeType) { |
55 | const Type *T = TemplArg.getIntegralType().getTypePtr(); |
56 | const llvm::APSInt &Val = TemplArg.getAsIntegral(); |
57 | |
58 | if (Policy.UseEnumerators) { |
59 | if (const EnumType *ET = T->getAs<EnumType>()) { |
60 | for (const EnumConstantDecl *ECD : ET->getDecl()->enumerators()) { |
61 | // In Sema::CheckTemplateArugment, enum template arguments value are |
62 | // extended to the size of the integer underlying the enum type. This |
63 | // may create a size difference between the enum value and template |
64 | // argument value, requiring isSameValue here instead of operator==. |
65 | if (llvm::APSInt::isSameValue(I1: ECD->getInitVal(), I2: Val)) { |
66 | ECD->printQualifiedName(Out, Policy); |
67 | return; |
68 | } |
69 | } |
70 | } |
71 | } |
72 | |
73 | if (Policy.MSVCFormatting) |
74 | IncludeType = false; |
75 | |
76 | if (T->isBooleanType()) { |
77 | if (!Policy.MSVCFormatting) |
78 | Out << (Val.getBoolValue() ? "true": "false"); |
79 | else |
80 | Out << Val; |
81 | } else if (T->isCharType()) { |
82 | if (IncludeType) { |
83 | if (T->isSpecificBuiltinType(K: BuiltinType::SChar)) |
84 | Out << "(signed char)"; |
85 | else if (T->isSpecificBuiltinType(K: BuiltinType::UChar)) |
86 | Out << "(unsigned char)"; |
87 | } |
88 | CharacterLiteral::print(val: Val.getZExtValue(), Kind: CharacterLiteralKind::Ascii, |
89 | OS&: Out); |
90 | } else if (T->isAnyCharacterType() && !Policy.MSVCFormatting) { |
91 | CharacterLiteralKind Kind; |
92 | if (T->isWideCharType()) |
93 | Kind = CharacterLiteralKind::Wide; |
94 | else if (T->isChar8Type()) |
95 | Kind = CharacterLiteralKind::UTF8; |
96 | else if (T->isChar16Type()) |
97 | Kind = CharacterLiteralKind::UTF16; |
98 | else if (T->isChar32Type()) |
99 | Kind = CharacterLiteralKind::UTF32; |
100 | else |
101 | Kind = CharacterLiteralKind::Ascii; |
102 | CharacterLiteral::print(val: Val.getExtValue(), Kind, OS&: Out); |
103 | } else if (IncludeType) { |
104 | if (const auto *BT = T->getAs<BuiltinType>()) { |
105 | switch (BT->getKind()) { |
106 | case BuiltinType::ULongLong: |
107 | Out << Val << "ULL"; |
108 | break; |
109 | case BuiltinType::LongLong: |
110 | Out << Val << "LL"; |
111 | break; |
112 | case BuiltinType::ULong: |
113 | Out << Val << "UL"; |
114 | break; |
115 | case BuiltinType::Long: |
116 | Out << Val << "L"; |
117 | break; |
118 | case BuiltinType::UInt: |
119 | Out << Val << "U"; |
120 | break; |
121 | case BuiltinType::Int: |
122 | Out << Val; |
123 | break; |
124 | default: |
125 | Out << "("<< T->getCanonicalTypeInternal().getAsString(Policy) << ")" |
126 | << Val; |
127 | break; |
128 | } |
129 | } else |
130 | Out << "("<< T->getCanonicalTypeInternal().getAsString(Policy) << ")" |
131 | << Val; |
132 | } else |
133 | Out << Val; |
134 | } |
135 | |
136 | static unsigned getArrayDepth(QualType type) { |
137 | unsigned count = 0; |
138 | while (const auto *arrayType = type->getAsArrayTypeUnsafe()) { |
139 | count++; |
140 | type = arrayType->getElementType(); |
141 | } |
142 | return count; |
143 | } |
144 | |
145 | static bool needsAmpersandOnTemplateArg(QualType paramType, QualType argType) { |
146 | // Generally, if the parameter type is a pointer, we must be taking the |
147 | // address of something and need a &. However, if the argument is an array, |
148 | // this could be implicit via array-to-pointer decay. |
149 | if (!paramType->isPointerType()) |
150 | return paramType->isMemberPointerType(); |
151 | if (argType->isArrayType()) |
152 | return getArrayDepth(type: argType) == getArrayDepth(type: paramType->getPointeeType()); |
153 | return true; |
154 | } |
155 | |
156 | //===----------------------------------------------------------------------===// |
157 | // TemplateArgument Implementation |
158 | //===----------------------------------------------------------------------===// |
159 | |
160 | void TemplateArgument::initFromType(QualType T, bool IsNullPtr, |
161 | bool IsDefaulted) { |
162 | TypeOrValue.Kind = IsNullPtr ? NullPtr : Type; |
163 | TypeOrValue.IsDefaulted = IsDefaulted; |
164 | TypeOrValue.V = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr()); |
165 | } |
166 | |
167 | void TemplateArgument::initFromDeclaration(ValueDecl *D, QualType QT, |
168 | bool IsDefaulted) { |
169 | assert(D && "Expected decl"); |
170 | DeclArg.Kind = Declaration; |
171 | DeclArg.IsDefaulted = IsDefaulted; |
172 | DeclArg.QT = QT.getAsOpaquePtr(); |
173 | DeclArg.D = D; |
174 | } |
175 | |
176 | void TemplateArgument::initFromIntegral(const ASTContext &Ctx, |
177 | const llvm::APSInt &Value, |
178 | QualType Type, bool IsDefaulted) { |
179 | Integer.Kind = Integral; |
180 | Integer.IsDefaulted = IsDefaulted; |
181 | // Copy the APSInt value into our decomposed form. |
182 | Integer.BitWidth = Value.getBitWidth(); |
183 | Integer.IsUnsigned = Value.isUnsigned(); |
184 | // If the value is large, we have to get additional memory from the ASTContext |
185 | unsigned NumWords = Value.getNumWords(); |
186 | if (NumWords > 1) { |
187 | void *Mem = Ctx.Allocate(Size: NumWords * sizeof(uint64_t)); |
188 | std::memcpy(dest: Mem, src: Value.getRawData(), n: NumWords * sizeof(uint64_t)); |
189 | Integer.pVal = static_cast<uint64_t *>(Mem); |
190 | } else { |
191 | Integer.VAL = Value.getZExtValue(); |
192 | } |
193 | |
194 | Integer.Type = Type.getAsOpaquePtr(); |
195 | } |
196 | |
197 | void TemplateArgument::initFromStructural(const ASTContext &Ctx, QualType Type, |
198 | const APValue &V, bool IsDefaulted) { |
199 | Value.Kind = StructuralValue; |
200 | Value.IsDefaulted = IsDefaulted; |
201 | Value.Value = new (Ctx) APValue(V); |
202 | Ctx.addDestruction(Ptr: Value.Value); |
203 | Value.Type = Type.getAsOpaquePtr(); |
204 | } |
205 | |
206 | TemplateArgument::TemplateArgument(const ASTContext &Ctx, |
207 | const llvm::APSInt &Value, QualType Type, |
208 | bool IsDefaulted) { |
209 | initFromIntegral(Ctx, Value, Type, IsDefaulted); |
210 | } |
211 | |
212 | static const ValueDecl *getAsSimpleValueDeclRef(const ASTContext &Ctx, |
213 | QualType T, const APValue &V) { |
214 | // Pointers to members are relatively easy. |
215 | if (V.isMemberPointer() && V.getMemberPointerPath().empty()) |
216 | return V.getMemberPointerDecl(); |
217 | |
218 | // We model class non-type template parameters as their template parameter |
219 | // object declaration. |
220 | if (V.isStruct() || V.isUnion()) { |
221 | // Dependent types are not supposed to be described as |
222 | // TemplateParamObjectDecls. |
223 | if (T->isDependentType() || T->isInstantiationDependentType()) |
224 | return nullptr; |
225 | return Ctx.getTemplateParamObjectDecl(T, V); |
226 | } |
227 | |
228 | // Pointers and references with an empty path use the special 'Declaration' |
229 | // representation. |
230 | if (V.isLValue() && V.hasLValuePath() && V.getLValuePath().empty() && |
231 | !V.isLValueOnePastTheEnd()) |
232 | return V.getLValueBase().dyn_cast<const ValueDecl *>(); |
233 | |
234 | // Everything else uses the 'structural' representation. |
235 | return nullptr; |
236 | } |
237 | |
238 | TemplateArgument::TemplateArgument(const ASTContext &Ctx, QualType Type, |
239 | const APValue &V, bool IsDefaulted) { |
240 | if (Type->isIntegralOrEnumerationType() && V.isInt()) |
241 | initFromIntegral(Ctx, Value: V.getInt(), Type, IsDefaulted); |
242 | else if ((V.isLValue() && V.isNullPointer()) || |
243 | (V.isMemberPointer() && !V.getMemberPointerDecl())) |
244 | initFromType(T: Type, /*isNullPtr=*/IsNullPtr: true, IsDefaulted); |
245 | else if (const ValueDecl *VD = getAsSimpleValueDeclRef(Ctx, T: Type, V)) |
246 | // FIXME: The Declaration form should expose a const ValueDecl*. |
247 | initFromDeclaration(D: const_cast<ValueDecl *>(VD), QT: Type, IsDefaulted); |
248 | else |
249 | initFromStructural(Ctx, Type, V, IsDefaulted); |
250 | } |
251 | |
252 | TemplateArgument |
253 | TemplateArgument::CreatePackCopy(ASTContext &Context, |
254 | ArrayRef<TemplateArgument> Args) { |
255 | if (Args.empty()) |
256 | return getEmptyPack(); |
257 | |
258 | return TemplateArgument(Args.copy(A&: Context)); |
259 | } |
260 | |
261 | TemplateArgumentDependence TemplateArgument::getDependence() const { |
262 | auto Deps = TemplateArgumentDependence::None; |
263 | switch (getKind()) { |
264 | case Null: |
265 | llvm_unreachable("Should not have a NULL template argument"); |
266 | |
267 | case Type: |
268 | Deps = toTemplateArgumentDependence(D: getAsType()->getDependence()); |
269 | if (isa<PackExpansionType>(Val: getAsType())) |
270 | Deps |= TemplateArgumentDependence::Dependent; |
271 | return Deps; |
272 | |
273 | case Template: |
274 | return toTemplateArgumentDependence(D: getAsTemplate().getDependence()); |
275 | |
276 | case TemplateExpansion: |
277 | return TemplateArgumentDependence::Dependent | |
278 | TemplateArgumentDependence::Instantiation; |
279 | |
280 | case Declaration: { |
281 | auto *DC = dyn_cast<DeclContext>(Val: getAsDecl()); |
282 | if (!DC) |
283 | DC = getAsDecl()->getDeclContext(); |
284 | if (DC->isDependentContext()) |
285 | Deps = TemplateArgumentDependence::Dependent | |
286 | TemplateArgumentDependence::Instantiation; |
287 | return Deps; |
288 | } |
289 | |
290 | case NullPtr: |
291 | case Integral: |
292 | case StructuralValue: |
293 | return TemplateArgumentDependence::None; |
294 | |
295 | case Expression: |
296 | Deps = toTemplateArgumentDependence(D: getAsExpr()->getDependence()); |
297 | if (isa<PackExpansionExpr>(Val: getAsExpr())) |
298 | Deps |= TemplateArgumentDependence::Dependent | |
299 | TemplateArgumentDependence::Instantiation; |
300 | return Deps; |
301 | |
302 | case Pack: |
303 | for (const auto &P : pack_elements()) |
304 | Deps |= P.getDependence(); |
305 | return Deps; |
306 | } |
307 | llvm_unreachable("unhandled ArgKind"); |
308 | } |
309 | |
310 | bool TemplateArgument::isDependent() const { |
311 | return getDependence() & TemplateArgumentDependence::Dependent; |
312 | } |
313 | |
314 | bool TemplateArgument::isInstantiationDependent() const { |
315 | return getDependence() & TemplateArgumentDependence::Instantiation; |
316 | } |
317 | |
318 | bool TemplateArgument::isPackExpansion() const { |
319 | switch (getKind()) { |
320 | case Null: |
321 | case Declaration: |
322 | case Integral: |
323 | case StructuralValue: |
324 | case Pack: |
325 | case Template: |
326 | case NullPtr: |
327 | return false; |
328 | |
329 | case TemplateExpansion: |
330 | return true; |
331 | |
332 | case Type: |
333 | return isa<PackExpansionType>(Val: getAsType()); |
334 | |
335 | case Expression: |
336 | return isa<PackExpansionExpr>(Val: getAsExpr()); |
337 | } |
338 | |
339 | llvm_unreachable("Invalid TemplateArgument Kind!"); |
340 | } |
341 | |
342 | bool TemplateArgument::containsUnexpandedParameterPack() const { |
343 | return getDependence() & TemplateArgumentDependence::UnexpandedPack; |
344 | } |
345 | |
346 | UnsignedOrNone TemplateArgument::getNumTemplateExpansions() const { |
347 | assert(getKind() == TemplateExpansion); |
348 | return TemplateArg.NumExpansions; |
349 | } |
350 | |
351 | QualType TemplateArgument::getNonTypeTemplateArgumentType() const { |
352 | switch (getKind()) { |
353 | case TemplateArgument::Null: |
354 | case TemplateArgument::Type: |
355 | case TemplateArgument::Template: |
356 | case TemplateArgument::TemplateExpansion: |
357 | case TemplateArgument::Pack: |
358 | return QualType(); |
359 | |
360 | case TemplateArgument::Integral: |
361 | return getIntegralType(); |
362 | |
363 | case TemplateArgument::Expression: |
364 | return getAsExpr()->getType(); |
365 | |
366 | case TemplateArgument::Declaration: |
367 | return getParamTypeForDecl(); |
368 | |
369 | case TemplateArgument::NullPtr: |
370 | return getNullPtrType(); |
371 | |
372 | case TemplateArgument::StructuralValue: |
373 | return getStructuralValueType(); |
374 | } |
375 | |
376 | llvm_unreachable("Invalid TemplateArgument Kind!"); |
377 | } |
378 | |
379 | void TemplateArgument::Profile(llvm::FoldingSetNodeID &ID, |
380 | const ASTContext &Context) const { |
381 | ID.AddInteger(I: getKind()); |
382 | switch (getKind()) { |
383 | case Null: |
384 | break; |
385 | |
386 | case Type: |
387 | getAsType().Profile(ID); |
388 | break; |
389 | |
390 | case NullPtr: |
391 | getNullPtrType().Profile(ID); |
392 | break; |
393 | |
394 | case Declaration: |
395 | getParamTypeForDecl().Profile(ID); |
396 | ID.AddPointer(Ptr: getAsDecl()); |
397 | break; |
398 | |
399 | case TemplateExpansion: |
400 | ID.AddInteger(I: TemplateArg.NumExpansions.toInternalRepresentation()); |
401 | [[fallthrough]]; |
402 | case Template: |
403 | ID.AddPointer(Ptr: TemplateArg.Name); |
404 | break; |
405 | |
406 | case Integral: |
407 | getIntegralType().Profile(ID); |
408 | getAsIntegral().Profile(ID); |
409 | break; |
410 | |
411 | case StructuralValue: |
412 | getStructuralValueType().Profile(ID); |
413 | getAsStructuralValue().Profile(ID); |
414 | break; |
415 | |
416 | case Expression: { |
417 | const Expr *E = getAsExpr(); |
418 | bool IsCanonical = isCanonicalExpr(); |
419 | ID.AddBoolean(B: IsCanonical); |
420 | if (IsCanonical) |
421 | E->Profile(ID, Context, true); |
422 | else |
423 | ID.AddPointer(Ptr: E); |
424 | break; |
425 | } |
426 | |
427 | case Pack: |
428 | ID.AddInteger(I: Args.NumArgs); |
429 | for (unsigned I = 0; I != Args.NumArgs; ++I) |
430 | Args.Args[I].Profile(ID, Context); |
431 | } |
432 | } |
433 | |
434 | bool TemplateArgument::structurallyEquals(const TemplateArgument &Other) const { |
435 | if (getKind() != Other.getKind()) return false; |
436 | |
437 | switch (getKind()) { |
438 | case Null: |
439 | case Type: |
440 | case NullPtr: |
441 | return TypeOrValue.V == Other.TypeOrValue.V; |
442 | case Expression: |
443 | return TypeOrValue.V == Other.TypeOrValue.V && |
444 | TypeOrValue.IsCanonicalExpr == Other.TypeOrValue.IsCanonicalExpr; |
445 | |
446 | case Template: |
447 | case TemplateExpansion: |
448 | return TemplateArg.Name == Other.TemplateArg.Name && |
449 | TemplateArg.NumExpansions == Other.TemplateArg.NumExpansions; |
450 | |
451 | case Declaration: |
452 | return getAsDecl() == Other.getAsDecl() && |
453 | getParamTypeForDecl() == Other.getParamTypeForDecl(); |
454 | |
455 | case Integral: |
456 | return getIntegralType() == Other.getIntegralType() && |
457 | getAsIntegral() == Other.getAsIntegral(); |
458 | |
459 | case StructuralValue: { |
460 | if (getStructuralValueType().getCanonicalType() != |
461 | Other.getStructuralValueType().getCanonicalType()) |
462 | return false; |
463 | |
464 | llvm::FoldingSetNodeID A, B; |
465 | getAsStructuralValue().Profile(ID&: A); |
466 | Other.getAsStructuralValue().Profile(ID&: B); |
467 | return A == B; |
468 | } |
469 | |
470 | case Pack: |
471 | if (Args.NumArgs != Other.Args.NumArgs) return false; |
472 | for (unsigned I = 0, E = Args.NumArgs; I != E; ++I) |
473 | if (!Args.Args[I].structurallyEquals(Other: Other.Args.Args[I])) |
474 | return false; |
475 | return true; |
476 | } |
477 | |
478 | llvm_unreachable("Invalid TemplateArgument Kind!"); |
479 | } |
480 | |
481 | TemplateArgument TemplateArgument::getPackExpansionPattern() const { |
482 | assert(isPackExpansion()); |
483 | |
484 | switch (getKind()) { |
485 | case Type: |
486 | return getAsType()->castAs<PackExpansionType>()->getPattern(); |
487 | |
488 | case Expression: |
489 | return TemplateArgument(cast<PackExpansionExpr>(Val: getAsExpr())->getPattern(), |
490 | isCanonicalExpr()); |
491 | |
492 | case TemplateExpansion: |
493 | return TemplateArgument(getAsTemplateOrTemplatePattern()); |
494 | |
495 | case Declaration: |
496 | case Integral: |
497 | case StructuralValue: |
498 | case Pack: |
499 | case Null: |
500 | case Template: |
501 | case NullPtr: |
502 | return TemplateArgument(); |
503 | } |
504 | |
505 | llvm_unreachable("Invalid TemplateArgument Kind!"); |
506 | } |
507 | |
508 | void TemplateArgument::print(const PrintingPolicy &Policy, raw_ostream &Out, |
509 | bool IncludeType) const { |
510 | |
511 | switch (getKind()) { |
512 | case Null: |
513 | Out << "(no value)"; |
514 | break; |
515 | |
516 | case Type: { |
517 | PrintingPolicy SubPolicy(Policy); |
518 | SubPolicy.SuppressStrongLifetime = true; |
519 | getAsType().print(OS&: Out, Policy: SubPolicy); |
520 | break; |
521 | } |
522 | |
523 | case Declaration: { |
524 | ValueDecl *VD = getAsDecl(); |
525 | if (getParamTypeForDecl()->isRecordType()) { |
526 | if (auto *TPO = dyn_cast<TemplateParamObjectDecl>(Val: VD)) { |
527 | TPO->getType().getUnqualifiedType().print(Out, Policy); |
528 | TPO->printAsInit(OS&: Out, Policy); |
529 | break; |
530 | } |
531 | } |
532 | if (needsAmpersandOnTemplateArg(paramType: getParamTypeForDecl(), argType: VD->getType())) |
533 | Out << "&"; |
534 | VD->printQualifiedName(Out); |
535 | break; |
536 | } |
537 | |
538 | case StructuralValue: |
539 | getAsStructuralValue().printPretty(OS&: Out, Policy, Ty: getStructuralValueType()); |
540 | break; |
541 | |
542 | case NullPtr: |
543 | // FIXME: Include the type if it's not obvious from the context. |
544 | Out << "nullptr"; |
545 | break; |
546 | |
547 | case Template: { |
548 | getAsTemplate().print(OS&: Out, Policy); |
549 | break; |
550 | } |
551 | |
552 | case TemplateExpansion: |
553 | getAsTemplateOrTemplatePattern().print(OS&: Out, Policy); |
554 | Out << "..."; |
555 | break; |
556 | |
557 | case Integral: |
558 | printIntegral(TemplArg: *this, Out, Policy, IncludeType); |
559 | break; |
560 | |
561 | case Expression: { |
562 | PrintingPolicy ExprPolicy = Policy; |
563 | ExprPolicy.PrintAsCanonical = isCanonicalExpr(); |
564 | getAsExpr()->printPretty(Out, nullptr, ExprPolicy); |
565 | break; |
566 | } |
567 | |
568 | case Pack: |
569 | Out << "<"; |
570 | bool First = true; |
571 | for (const auto &P : pack_elements()) { |
572 | if (First) |
573 | First = false; |
574 | else |
575 | Out << ", "; |
576 | |
577 | P.print(Policy, Out, IncludeType); |
578 | } |
579 | Out << ">"; |
580 | break; |
581 | } |
582 | } |
583 | |
584 | //===----------------------------------------------------------------------===// |
585 | // TemplateArgumentLoc Implementation |
586 | //===----------------------------------------------------------------------===// |
587 | |
588 | SourceRange TemplateArgumentLoc::getSourceRange() const { |
589 | switch (Argument.getKind()) { |
590 | case TemplateArgument::Expression: |
591 | return getSourceExpression()->getSourceRange(); |
592 | |
593 | case TemplateArgument::Declaration: |
594 | return getSourceDeclExpression()->getSourceRange(); |
595 | |
596 | case TemplateArgument::NullPtr: |
597 | return getSourceNullPtrExpression()->getSourceRange(); |
598 | |
599 | case TemplateArgument::Type: |
600 | if (TypeSourceInfo *TSI = getTypeSourceInfo()) |
601 | return TSI->getTypeLoc().getSourceRange(); |
602 | else |
603 | return SourceRange(); |
604 | |
605 | case TemplateArgument::Template: |
606 | if (getTemplateQualifierLoc()) |
607 | return SourceRange(getTemplateQualifierLoc().getBeginLoc(), |
608 | getTemplateNameLoc()); |
609 | return SourceRange(getTemplateNameLoc()); |
610 | |
611 | case TemplateArgument::TemplateExpansion: |
612 | if (getTemplateQualifierLoc()) |
613 | return SourceRange(getTemplateQualifierLoc().getBeginLoc(), |
614 | getTemplateEllipsisLoc()); |
615 | return SourceRange(getTemplateNameLoc(), getTemplateEllipsisLoc()); |
616 | |
617 | case TemplateArgument::Integral: |
618 | return getSourceIntegralExpression()->getSourceRange(); |
619 | |
620 | case TemplateArgument::StructuralValue: |
621 | return getSourceStructuralValueExpression()->getSourceRange(); |
622 | |
623 | case TemplateArgument::Pack: |
624 | case TemplateArgument::Null: |
625 | return SourceRange(); |
626 | } |
627 | |
628 | llvm_unreachable("Invalid TemplateArgument Kind!"); |
629 | } |
630 | |
631 | template <typename T> |
632 | static const T &DiagTemplateArg(const T &DB, const TemplateArgument &Arg) { |
633 | switch (Arg.getKind()) { |
634 | case TemplateArgument::Null: |
635 | // This is bad, but not as bad as crashing because of argument |
636 | // count mismatches. |
637 | return DB << "(null template argument)"; |
638 | |
639 | case TemplateArgument::Type: |
640 | return DB << Arg.getAsType(); |
641 | |
642 | case TemplateArgument::Declaration: |
643 | return DB << Arg.getAsDecl(); |
644 | |
645 | case TemplateArgument::NullPtr: |
646 | return DB << "nullptr"; |
647 | |
648 | case TemplateArgument::Integral: |
649 | return DB << toString(I: Arg.getAsIntegral(), Radix: 10); |
650 | |
651 | case TemplateArgument::StructuralValue: { |
652 | // FIXME: We're guessing at LangOptions! |
653 | SmallString<32> Str; |
654 | llvm::raw_svector_ostream OS(Str); |
655 | LangOptions LangOpts; |
656 | LangOpts.CPlusPlus = true; |
657 | PrintingPolicy Policy(LangOpts); |
658 | Arg.getAsStructuralValue().printPretty(OS, Policy, |
659 | Ty: Arg.getStructuralValueType()); |
660 | return DB << OS.str(); |
661 | } |
662 | |
663 | case TemplateArgument::Template: |
664 | return DB << Arg.getAsTemplate(); |
665 | |
666 | case TemplateArgument::TemplateExpansion: |
667 | return DB << Arg.getAsTemplateOrTemplatePattern() << "..."; |
668 | |
669 | case TemplateArgument::Expression: |
670 | // FIXME: Support printing expressions as canonical |
671 | return DB << Arg.getAsExpr(); |
672 | |
673 | case TemplateArgument::Pack: { |
674 | // FIXME: We're guessing at LangOptions! |
675 | SmallString<32> Str; |
676 | llvm::raw_svector_ostream OS(Str); |
677 | LangOptions LangOpts; |
678 | LangOpts.CPlusPlus = true; |
679 | PrintingPolicy Policy(LangOpts); |
680 | Arg.print(Policy, Out&: OS, /*IncludeType*/ true); |
681 | return DB << OS.str(); |
682 | } |
683 | } |
684 | |
685 | llvm_unreachable("Invalid TemplateArgument Kind!"); |
686 | } |
687 | |
688 | const StreamingDiagnostic &clang::operator<<(const StreamingDiagnostic &DB, |
689 | const TemplateArgument &Arg) { |
690 | return DiagTemplateArg(DB, Arg); |
691 | } |
692 | |
693 | clang::TemplateArgumentLocInfo::TemplateArgumentLocInfo( |
694 | ASTContext &Ctx, NestedNameSpecifierLoc QualifierLoc, |
695 | SourceLocation TemplateNameLoc, SourceLocation EllipsisLoc) { |
696 | TemplateTemplateArgLocInfo *Template = new (Ctx) TemplateTemplateArgLocInfo; |
697 | Template->Qualifier = QualifierLoc.getNestedNameSpecifier(); |
698 | Template->QualifierLocData = QualifierLoc.getOpaqueData(); |
699 | Template->TemplateNameLoc = TemplateNameLoc; |
700 | Template->EllipsisLoc = EllipsisLoc; |
701 | Pointer = Template; |
702 | } |
703 | |
704 | const ASTTemplateArgumentListInfo * |
705 | ASTTemplateArgumentListInfo::Create(const ASTContext &C, |
706 | const TemplateArgumentListInfo &List) { |
707 | std::size_t size = totalSizeToAlloc<TemplateArgumentLoc>(Counts: List.size()); |
708 | void *Mem = C.Allocate(Size: size, Align: alignof(ASTTemplateArgumentListInfo)); |
709 | return new (Mem) ASTTemplateArgumentListInfo(List); |
710 | } |
711 | |
712 | const ASTTemplateArgumentListInfo * |
713 | ASTTemplateArgumentListInfo::Create(const ASTContext &C, |
714 | const ASTTemplateArgumentListInfo *List) { |
715 | if (!List) |
716 | return nullptr; |
717 | std::size_t size = |
718 | totalSizeToAlloc<TemplateArgumentLoc>(Counts: List->getNumTemplateArgs()); |
719 | void *Mem = C.Allocate(Size: size, Align: alignof(ASTTemplateArgumentListInfo)); |
720 | return new (Mem) ASTTemplateArgumentListInfo(List); |
721 | } |
722 | |
723 | ASTTemplateArgumentListInfo::ASTTemplateArgumentListInfo( |
724 | const TemplateArgumentListInfo &Info) { |
725 | LAngleLoc = Info.getLAngleLoc(); |
726 | RAngleLoc = Info.getRAngleLoc(); |
727 | NumTemplateArgs = Info.size(); |
728 | |
729 | TemplateArgumentLoc *ArgBuffer = getTrailingObjects(); |
730 | for (unsigned i = 0; i != NumTemplateArgs; ++i) |
731 | new (&ArgBuffer[i]) TemplateArgumentLoc(Info[i]); |
732 | } |
733 | |
734 | ASTTemplateArgumentListInfo::ASTTemplateArgumentListInfo( |
735 | const ASTTemplateArgumentListInfo *Info) { |
736 | LAngleLoc = Info->getLAngleLoc(); |
737 | RAngleLoc = Info->getRAngleLoc(); |
738 | NumTemplateArgs = Info->getNumTemplateArgs(); |
739 | |
740 | TemplateArgumentLoc *ArgBuffer = getTrailingObjects(); |
741 | for (unsigned i = 0; i != NumTemplateArgs; ++i) |
742 | new (&ArgBuffer[i]) TemplateArgumentLoc((*Info)[i]); |
743 | } |
744 | |
745 | void ASTTemplateKWAndArgsInfo::initializeFrom( |
746 | SourceLocation TemplateKWLoc, const TemplateArgumentListInfo &Info, |
747 | TemplateArgumentLoc *OutArgArray) { |
748 | this->TemplateKWLoc = TemplateKWLoc; |
749 | LAngleLoc = Info.getLAngleLoc(); |
750 | RAngleLoc = Info.getRAngleLoc(); |
751 | NumTemplateArgs = Info.size(); |
752 | |
753 | for (unsigned i = 0; i != NumTemplateArgs; ++i) |
754 | new (&OutArgArray[i]) TemplateArgumentLoc(Info[i]); |
755 | } |
756 | |
757 | void ASTTemplateKWAndArgsInfo::initializeFrom(SourceLocation TemplateKWLoc) { |
758 | assert(TemplateKWLoc.isValid()); |
759 | LAngleLoc = SourceLocation(); |
760 | RAngleLoc = SourceLocation(); |
761 | this->TemplateKWLoc = TemplateKWLoc; |
762 | NumTemplateArgs = 0; |
763 | } |
764 | |
765 | void ASTTemplateKWAndArgsInfo::initializeFrom( |
766 | SourceLocation TemplateKWLoc, const TemplateArgumentListInfo &Info, |
767 | TemplateArgumentLoc *OutArgArray, TemplateArgumentDependence &Deps) { |
768 | this->TemplateKWLoc = TemplateKWLoc; |
769 | LAngleLoc = Info.getLAngleLoc(); |
770 | RAngleLoc = Info.getRAngleLoc(); |
771 | NumTemplateArgs = Info.size(); |
772 | |
773 | for (unsigned i = 0; i != NumTemplateArgs; ++i) { |
774 | Deps |= Info[i].getArgument().getDependence(); |
775 | |
776 | new (&OutArgArray[i]) TemplateArgumentLoc(Info[i]); |
777 | } |
778 | } |
779 | |
780 | void ASTTemplateKWAndArgsInfo::copyInto(const TemplateArgumentLoc *ArgArray, |
781 | TemplateArgumentListInfo &Info) const { |
782 | Info.setLAngleLoc(LAngleLoc); |
783 | Info.setRAngleLoc(RAngleLoc); |
784 | for (unsigned I = 0; I != NumTemplateArgs; ++I) |
785 | Info.addArgument(Loc: ArgArray[I]); |
786 | } |
787 |
Definitions
- printIntegral
- getArrayDepth
- needsAmpersandOnTemplateArg
- initFromType
- initFromDeclaration
- initFromIntegral
- initFromStructural
- TemplateArgument
- getAsSimpleValueDeclRef
- TemplateArgument
- CreatePackCopy
- getDependence
- isDependent
- isInstantiationDependent
- isPackExpansion
- containsUnexpandedParameterPack
- getNumTemplateExpansions
- getNonTypeTemplateArgumentType
- Profile
- structurallyEquals
- getPackExpansionPattern
- getSourceRange
- DiagTemplateArg
- operator<<
- TemplateArgumentLocInfo
- Create
- Create
- ASTTemplateArgumentListInfo
- ASTTemplateArgumentListInfo
- initializeFrom
- initializeFrom
- initializeFrom
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