clang 10.0.0

ParseDecl.cpp
Go to the documentation of this file.
1 //===--- ParseDecl.cpp - Declaration Parsing --------------------*- C++ -*-===//
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 the Declaration portions of the Parser interfaces.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "clang/Parse/Parser.h"
14 #include "clang/Parse/RAIIObjectsForParser.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/DeclTemplate.h"
17 #include "clang/AST/PrettyDeclStackTrace.h"
18 #include "clang/Basic/AddressSpaces.h"
19 #include "clang/Basic/Attributes.h"
20 #include "clang/Basic/CharInfo.h"
21 #include "clang/Basic/TargetInfo.h"
22 #include "clang/Parse/ParseDiagnostic.h"
23 #include "clang/Sema/Lookup.h"
24 #include "clang/Sema/ParsedTemplate.h"
25 #include "clang/Sema/Scope.h"
26 #include "llvm/ADT/Optional.h"
27 #include "llvm/ADT/SmallSet.h"
28 #include "llvm/ADT/SmallString.h"
29 #include "llvm/ADT/StringSwitch.h"
30
31 using namespace clang;
32
33 //===----------------------------------------------------------------------===//
34 // C99 6.7: Declarations.
35 //===----------------------------------------------------------------------===//
36
37 /// ParseTypeName
38 /// type-name: [C99 6.7.6]
39 /// specifier-qualifier-list abstract-declarator[opt]
40 ///
41 /// Called type-id in C++.
42 TypeResult Parser::ParseTypeName(SourceRange *Range,
43 DeclaratorContext Context,
44 AccessSpecifier AS,
45 Decl **OwnedType,
46 ParsedAttributes *Attrs) {
47 DeclSpecContext DSC = getDeclSpecContextFromDeclaratorContext(Context);
48 if (DSC == DeclSpecContext::DSC_normal)
49 DSC = DeclSpecContext::DSC_type_specifier;
50
51 // Parse the common declaration-specifiers piece.
52 DeclSpec DS(AttrFactory);
53 if (Attrs)
54 DS.addAttributes(*Attrs);
55 ParseSpecifierQualifierList(DS, AS, DSC);
56 if (OwnedType)
57 *OwnedType = DS.isTypeSpecOwned() ? DS.getRepAsDecl() : nullptr;
58
59 // Parse the abstract-declarator, if present.
60 Declarator DeclaratorInfo(DS, Context);
61 ParseDeclarator(DeclaratorInfo);
62 if (Range)
63 *Range = DeclaratorInfo.getSourceRange();
64
65 if (DeclaratorInfo.isInvalidType())
66 return true;
67
68 return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
69 }
70
71 /// Normalizes an attribute name by dropping prefixed and suffixed __.
72 static StringRef normalizeAttrName(StringRef Name) {
73 if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
74 return Name.drop_front(2).drop_back(2);
75 return Name;
76 }
77
78 /// isAttributeLateParsed - Return true if the attribute has arguments that
79 /// require late parsing.
80 static bool isAttributeLateParsed(const IdentifierInfo &II) {
81 #define CLANG_ATTR_LATE_PARSED_LIST
82 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
83 #include "clang/Parse/AttrParserStringSwitches.inc"
84 .Default(false);
85 #undef CLANG_ATTR_LATE_PARSED_LIST
86 }
87
88 /// Check if the a start and end source location expand to the same macro.
89 static bool FindLocsWithCommonFileID(Preprocessor &PP, SourceLocation StartLoc,
90 SourceLocation EndLoc) {
91 if (!StartLoc.isMacroID() || !EndLoc.isMacroID())
92 return false;
93
94 SourceManager &SM = PP.getSourceManager();
95 if (SM.getFileID(StartLoc) != SM.getFileID(EndLoc))
96 return false;
97
98 bool AttrStartIsInMacro =
99 Lexer::isAtStartOfMacroExpansion(StartLoc, SM, PP.getLangOpts());
100 bool AttrEndIsInMacro =
101 Lexer::isAtEndOfMacroExpansion(EndLoc, SM, PP.getLangOpts());
102 return AttrStartIsInMacro && AttrEndIsInMacro;
103 }
104
105 /// ParseGNUAttributes - Parse a non-empty attributes list.
106 ///
107 /// [GNU] attributes:
108 /// attribute
109 /// attributes attribute
110 ///
111 /// [GNU] attribute:
112 /// '__attribute__' '(' '(' attribute-list ')' ')'
113 ///
114 /// [GNU] attribute-list:
115 /// attrib
116 /// attribute_list ',' attrib
117 ///
118 /// [GNU] attrib:
119 /// empty
120 /// attrib-name
121 /// attrib-name '(' identifier ')'
122 /// attrib-name '(' identifier ',' nonempty-expr-list ')'
123 /// attrib-name '(' argument-expression-list [C99 6.5.2] ')'
124 ///
125 /// [GNU] attrib-name:
126 /// identifier
127 /// typespec
128 /// typequal
129 /// storageclass
130 ///
131 /// Whether an attribute takes an 'identifier' is determined by the
132 /// attrib-name. GCC's behavior here is not worth imitating:
133 ///
134 /// * In C mode, if the attribute argument list starts with an identifier
135 /// followed by a ',' or an ')', and the identifier doesn't resolve to
136 /// a type, it is parsed as an identifier. If the attribute actually
137 /// wanted an expression, it's out of luck (but it turns out that no
138 /// attributes work that way, because C constant expressions are very
139 /// limited).
140 /// * In C++ mode, if the attribute argument list starts with an identifier,
141 /// and the attribute *wants* an identifier, it is parsed as an identifier.
142 /// At block scope, any additional tokens between the identifier and the
143 /// ',' or ')' are ignored, otherwise they produce a parse error.
144 ///
145 /// We follow the C++ model, but don't allow junk after the identifier.
146 void Parser::ParseGNUAttributes(ParsedAttributes &attrs,
147 SourceLocation *endLoc,
148 LateParsedAttrList *LateAttrs,
149 Declarator *D) {
150 assert(Tok.is(tok::kw___attribute) && "Not a GNU attribute list!");
151
152 while (Tok.is(tok::kw___attribute)) {
153 SourceLocation AttrTokLoc = ConsumeToken();
154 unsigned OldNumAttrs = attrs.size();
155 unsigned OldNumLateAttrs = LateAttrs ? LateAttrs->size() : 0;
156
157 if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after,
158 "attribute")) {
159 SkipUntil(tok::r_paren, StopAtSemi); // skip until ) or ;
160 return;
161 }
162 if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after, "(")) {
163 SkipUntil(tok::r_paren, StopAtSemi); // skip until ) or ;
164 return;
165 }
166 // Parse the attribute-list. e.g. __attribute__(( weak, alias("__f") ))
167 do {
168 // Eat preceeding commas to allow __attribute__((,,,foo))
169 while (TryConsumeToken(tok::comma))
170 ;
171
172 // Expect an identifier or declaration specifier (const, int, etc.)
173 if (Tok.isAnnotation())
174 break;
175 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
176 if (!AttrName)
177 break;
178
179 SourceLocation AttrNameLoc = ConsumeToken();
180
181 if (Tok.isNot(tok::l_paren)) {
182 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
183 ParsedAttr::AS_GNU);
184 continue;
185 }
186
187 // Handle "parameterized" attributes
188 if (!LateAttrs || !isAttributeLateParsed(*AttrName)) {
189 ParseGNUAttributeArgs(AttrName, AttrNameLoc, attrs, endLoc, nullptr,
190 SourceLocation(), ParsedAttr::AS_GNU, D);
191 continue;
192 }
193
194 // Handle attributes with arguments that require late parsing.
195 LateParsedAttribute *LA =
196 new LateParsedAttribute(this, *AttrName, AttrNameLoc);
197 LateAttrs->push_back(LA);
198
199 // Attributes in a class are parsed at the end of the class, along
200 // with other late-parsed declarations.
201 if (!ClassStack.empty() && !LateAttrs->parseSoon())
202 getCurrentClass().LateParsedDeclarations.push_back(LA);
203
204 // Be sure ConsumeAndStoreUntil doesn't see the start l_paren, since it
205 // recursively consumes balanced parens.
206 LA->Toks.push_back(Tok);
207 ConsumeParen();
208 // Consume everything up to and including the matching right parens.
209 ConsumeAndStoreUntil(tok::r_paren, LA->Toks, /*StopAtSemi=*/true);
210
211 Token Eof;
212 Eof.startToken();
213 Eof.setLocation(Tok.getLocation());
214 LA->Toks.push_back(Eof);
215 } while (Tok.is(tok::comma));
216
217 if (ExpectAndConsume(tok::r_paren))
218 SkipUntil(tok::r_paren, StopAtSemi);
219 SourceLocation Loc = Tok.getLocation();
220 if (ExpectAndConsume(tok::r_paren))
221 SkipUntil(tok::r_paren, StopAtSemi);
222 if (endLoc)
223 *endLoc = Loc;
224
225 // If this was declared in a macro, attach the macro IdentifierInfo to the
226 // parsed attribute.
227 auto &SM = PP.getSourceManager();
228 if (!SM.isWrittenInBuiltinFile(SM.getSpellingLoc(AttrTokLoc)) &&
229 FindLocsWithCommonFileID(PP, AttrTokLoc, Loc)) {
230 CharSourceRange ExpansionRange = SM.getExpansionRange(AttrTokLoc);
231 StringRef FoundName =
232 Lexer::getSourceText(ExpansionRange, SM, PP.getLangOpts());
233 IdentifierInfo *MacroII = PP.getIdentifierInfo(FoundName);
234
235 for (unsigned i = OldNumAttrs; i < attrs.size(); ++i)
236 attrs[i].setMacroIdentifier(MacroII, ExpansionRange.getBegin());
237
238 if (LateAttrs) {
239 for (unsigned i = OldNumLateAttrs; i < LateAttrs->size(); ++i)
240 (*LateAttrs)[i]->MacroII = MacroII;
241 }
242 }
243 }
244 }
245
246 /// Determine whether the given attribute has an identifier argument.
247 static bool attributeHasIdentifierArg(const IdentifierInfo &II) {
248 #define CLANG_ATTR_IDENTIFIER_ARG_LIST
249 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
250 #include "clang/Parse/AttrParserStringSwitches.inc"
251 .Default(false);
252 #undef CLANG_ATTR_IDENTIFIER_ARG_LIST
253 }
254
255 /// Determine whether the given attribute has a variadic identifier argument.
256 static bool attributeHasVariadicIdentifierArg(const IdentifierInfo &II) {
257 #define CLANG_ATTR_VARIADIC_IDENTIFIER_ARG_LIST
258 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
259 #include "clang/Parse/AttrParserStringSwitches.inc"
260 .Default(false);
261 #undef CLANG_ATTR_VARIADIC_IDENTIFIER_ARG_LIST
262 }
263
264 /// Determine whether the given attribute treats kw_this as an identifier.
265 static bool attributeTreatsKeywordThisAsIdentifier(const IdentifierInfo &II) {
266 #define CLANG_ATTR_THIS_ISA_IDENTIFIER_ARG_LIST
267 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
268 #include "clang/Parse/AttrParserStringSwitches.inc"
269 .Default(false);
270 #undef CLANG_ATTR_THIS_ISA_IDENTIFIER_ARG_LIST
271 }
272
273 /// Determine whether the given attribute parses a type argument.
274 static bool attributeIsTypeArgAttr(const IdentifierInfo &II) {
275 #define CLANG_ATTR_TYPE_ARG_LIST
276 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
277 #include "clang/Parse/AttrParserStringSwitches.inc"
278 .Default(false);
279 #undef CLANG_ATTR_TYPE_ARG_LIST
280 }
281
282 /// Determine whether the given attribute requires parsing its arguments
283 /// in an unevaluated context or not.
284 static bool attributeParsedArgsUnevaluated(const IdentifierInfo &II) {
285 #define CLANG_ATTR_ARG_CONTEXT_LIST
286 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
287 #include "clang/Parse/AttrParserStringSwitches.inc"
288 .Default(false);
289 #undef CLANG_ATTR_ARG_CONTEXT_LIST
290 }
291
292 IdentifierLoc *Parser::ParseIdentifierLoc() {
293 assert(Tok.is(tok::identifier) && "expected an identifier");
294 IdentifierLoc *IL = IdentifierLoc::create(Actions.Context,
295 Tok.getLocation(),
296 Tok.getIdentifierInfo());
297 ConsumeToken();
298 return IL;
299 }
300
301 void Parser::ParseAttributeWithTypeArg(IdentifierInfo &AttrName,
302 SourceLocation AttrNameLoc,
303 ParsedAttributes &Attrs,
304 SourceLocation *EndLoc,
305 IdentifierInfo *ScopeName,
306 SourceLocation ScopeLoc,
307 ParsedAttr::Syntax Syntax) {
308 BalancedDelimiterTracker Parens(*this, tok::l_paren);
309 Parens.consumeOpen();
310
311 TypeResult T;
312 if (Tok.isNot(tok::r_paren))
313 T = ParseTypeName();
314
315 if (Parens.consumeClose())
316 return;
317
318 if (T.isInvalid())
319 return;
320
321 if (T.isUsable())
322 Attrs.addNewTypeAttr(&AttrName,
323 SourceRange(AttrNameLoc, Parens.getCloseLocation()),
324 ScopeName, ScopeLoc, T.get(), Syntax);
325 else
326 Attrs.addNew(&AttrName, SourceRange(AttrNameLoc, Parens.getCloseLocation()),
327 ScopeName, ScopeLoc, nullptr, 0, Syntax);
328 }
329
330 unsigned Parser::ParseAttributeArgsCommon(
331 IdentifierInfo *AttrName, SourceLocation AttrNameLoc,
332 ParsedAttributes &Attrs, SourceLocation *EndLoc, IdentifierInfo *ScopeName,
333 SourceLocation ScopeLoc, ParsedAttr::Syntax Syntax) {
334 // Ignore the left paren location for now.
335 ConsumeParen();
336
337 bool ChangeKWThisToIdent = attributeTreatsKeywordThisAsIdentifier(*AttrName);
338 bool AttributeIsTypeArgAttr = attributeIsTypeArgAttr(*AttrName);
339
340 // Interpret "kw_this" as an identifier if the attributed requests it.
341 if (ChangeKWThisToIdent && Tok.is(tok::kw_this))
342 Tok.setKind(tok::identifier);
343
344 ArgsVector ArgExprs;
345 if (Tok.is(tok::identifier)) {
346 // If this attribute wants an 'identifier' argument, make it so.
347 bool IsIdentifierArg = attributeHasIdentifierArg(*AttrName) ||
348 attributeHasVariadicIdentifierArg(*AttrName);
349 ParsedAttr::Kind AttrKind =
350 ParsedAttr::getParsedKind(AttrName, ScopeName, Syntax);
351
352 // If we don't know how to parse this attribute, but this is the only
353 // token in this argument, assume it's meant to be an identifier.
354 if (AttrKind == ParsedAttr::UnknownAttribute ||
355 AttrKind == ParsedAttr::IgnoredAttribute) {
356 const Token &Next = NextToken();
357 IsIdentifierArg = Next.isOneOf(tok::r_paren, tok::comma);
358 }
359
360 if (IsIdentifierArg)
361 ArgExprs.push_back(ParseIdentifierLoc());
362 }
363
364 ParsedType TheParsedType;
365 if (!ArgExprs.empty() ? Tok.is(tok::comma) : Tok.isNot(tok::r_paren)) {
366 // Eat the comma.
367 if (!ArgExprs.empty())
368 ConsumeToken();
369
370 // Parse the non-empty comma-separated list of expressions.
371 do {
372 // Interpret "kw_this" as an identifier if the attributed requests it.
373 if (ChangeKWThisToIdent && Tok.is(tok::kw_this))
374 Tok.setKind(tok::identifier);
375
376 ExprResult ArgExpr;
377 if (AttributeIsTypeArgAttr) {
378 TypeResult T = ParseTypeName();
379 if (T.isInvalid()) {
380 SkipUntil(tok::r_paren, StopAtSemi);
381 return 0;
382 }
383 if (T.isUsable())
384 TheParsedType = T.get();
385 break; // FIXME: Multiple type arguments are not implemented.
386 } else if (Tok.is(tok::identifier) &&
387 attributeHasVariadicIdentifierArg(*AttrName)) {
388 ArgExprs.push_back(ParseIdentifierLoc());
389 } else {
390 bool Uneval = attributeParsedArgsUnevaluated(*AttrName);
391 EnterExpressionEvaluationContext Unevaluated(
392 Actions,
393 Uneval ? Sema::ExpressionEvaluationContext::Unevaluated
394 : Sema::ExpressionEvaluationContext::ConstantEvaluated);
395
396 ExprResult ArgExpr(
397 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()));
398 if (ArgExpr.isInvalid()) {
399 SkipUntil(tok::r_paren, StopAtSemi);
400 return 0;
401 }
402 ArgExprs.push_back(ArgExpr.get());
403 }
404 // Eat the comma, move to the next argument
405 } while (TryConsumeToken(tok::comma));
406 }
407
408 SourceLocation RParen = Tok.getLocation();
409 if (!ExpectAndConsume(tok::r_paren)) {
410 SourceLocation AttrLoc = ScopeLoc.isValid() ? ScopeLoc : AttrNameLoc;
411
412 if (AttributeIsTypeArgAttr && !TheParsedType.get().isNull()) {
413 Attrs.addNewTypeAttr(AttrName, SourceRange(AttrNameLoc, RParen),
414 ScopeName, ScopeLoc, TheParsedType, Syntax);
415 } else {
416 Attrs.addNew(AttrName, SourceRange(AttrLoc, RParen), ScopeName, ScopeLoc,
417 ArgExprs.data(), ArgExprs.size(), Syntax);
418 }
419 }
420
421 if (EndLoc)
422 *EndLoc = RParen;
423
424 return static_cast<unsigned>(ArgExprs.size() + !TheParsedType.get().isNull());
425 }
426
427 /// Parse the arguments to a parameterized GNU attribute or
428 /// a C++11 attribute in "gnu" namespace.
429 void Parser::ParseGNUAttributeArgs(IdentifierInfo *AttrName,
430 SourceLocation AttrNameLoc,
431 ParsedAttributes &Attrs,
432 SourceLocation *EndLoc,
433 IdentifierInfo *ScopeName,
434 SourceLocation ScopeLoc,
435 ParsedAttr::Syntax Syntax,
436 Declarator *D) {
437
438 assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
439
440 ParsedAttr::Kind AttrKind =
441 ParsedAttr::getParsedKind(AttrName, ScopeName, Syntax);
442
443 if (AttrKind == ParsedAttr::AT_Availability) {
444 ParseAvailabilityAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
445 ScopeLoc, Syntax);
446 return;
447 } else if (AttrKind == ParsedAttr::AT_ExternalSourceSymbol) {
448 ParseExternalSourceSymbolAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
449 ScopeName, ScopeLoc, Syntax);
450 return;
451 } else if (AttrKind == ParsedAttr::AT_ObjCBridgeRelated) {
452 ParseObjCBridgeRelatedAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
453 ScopeName, ScopeLoc, Syntax);
454 return;
455 } else if (AttrKind == ParsedAttr::AT_TypeTagForDatatype) {
456 ParseTypeTagForDatatypeAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
457 ScopeName, ScopeLoc, Syntax);
458 return;
459 } else if (attributeIsTypeArgAttr(*AttrName)) {
460 ParseAttributeWithTypeArg(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
461 ScopeLoc, Syntax);
462 return;
463 }
464
465 // These may refer to the function arguments, but need to be parsed early to
466 // participate in determining whether it's a redeclaration.
467 llvm::Optional<ParseScope> PrototypeScope;
468 if (normalizeAttrName(AttrName->getName()) == "enable_if" &&
469 D && D->isFunctionDeclarator()) {
470 DeclaratorChunk::FunctionTypeInfo FTI = D->getFunctionTypeInfo();
471 PrototypeScope.emplace(this, Scope::FunctionPrototypeScope |
472 Scope::FunctionDeclarationScope |
473 Scope::DeclScope);
474 for (unsigned i = 0; i != FTI.NumParams; ++i) {
475 ParmVarDecl *Param = cast<ParmVarDecl>(FTI.Params[i].Param);
476 Actions.ActOnReenterCXXMethodParameter(getCurScope(), Param);
477 }
478 }
479
480 ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
481 ScopeLoc, Syntax);
482 }
483
484 unsigned Parser::ParseClangAttributeArgs(
485 IdentifierInfo *AttrName, SourceLocation AttrNameLoc,
486 ParsedAttributes &Attrs, SourceLocation *EndLoc, IdentifierInfo *ScopeName,
487 SourceLocation ScopeLoc, ParsedAttr::Syntax Syntax) {
488 assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
489
490 ParsedAttr::Kind AttrKind =
491 ParsedAttr::getParsedKind(AttrName, ScopeName, Syntax);
492
493 switch (AttrKind) {
494 default:
495 return ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, EndLoc,
496 ScopeName, ScopeLoc, Syntax);
497 case ParsedAttr::AT_ExternalSourceSymbol:
498 ParseExternalSourceSymbolAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
499 ScopeName, ScopeLoc, Syntax);
500 break;
501 case ParsedAttr::AT_Availability:
502 ParseAvailabilityAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
503 ScopeLoc, Syntax);
504 break;
505 case ParsedAttr::AT_ObjCBridgeRelated:
506 ParseObjCBridgeRelatedAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
507 ScopeName, ScopeLoc, Syntax);
508 break;
509 case ParsedAttr::AT_TypeTagForDatatype:
510 ParseTypeTagForDatatypeAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
511 ScopeName, ScopeLoc, Syntax);
512 break;
513 }
514 return !Attrs.empty() ? Attrs.begin()->getNumArgs() : 0;
515 }
516
517 bool Parser::ParseMicrosoftDeclSpecArgs(IdentifierInfo *AttrName,
518 SourceLocation AttrNameLoc,
519 ParsedAttributes &Attrs) {
520 // If the attribute isn't known, we will not attempt to parse any
521 // arguments.
522 if (!hasAttribute(AttrSyntax::Declspec, nullptr, AttrName,
523 getTargetInfo(), getLangOpts())) {
524 // Eat the left paren, then skip to the ending right paren.
525 ConsumeParen();
526 SkipUntil(tok::r_paren);
527 return false;
528 }
529
530 SourceLocation OpenParenLoc = Tok.getLocation();
531
532 if (AttrName->getName() == "property") {
533 // The property declspec is more complex in that it can take one or two
534 // assignment expressions as a parameter, but the lhs of the assignment
535 // must be named get or put.
536
537 BalancedDelimiterTracker T(*this, tok::l_paren);
538 T.expectAndConsume(diag::err_expected_lparen_after,
539 AttrName->getNameStart(), tok::r_paren);
540
541 enum AccessorKind {
542 AK_Invalid = -1,
543 AK_Put = 0,
544 AK_Get = 1 // indices into AccessorNames
545 };
546 IdentifierInfo *AccessorNames[] = {nullptr, nullptr};
547 bool HasInvalidAccessor = false;
548
549 // Parse the accessor specifications.
550 while (true) {
551 // Stop if this doesn't look like an accessor spec.
552 if (!Tok.is(tok::identifier)) {
553 // If the user wrote a completely empty list, use a special diagnostic.
554 if (Tok.is(tok::r_paren) && !HasInvalidAccessor &&
555 AccessorNames[AK_Put] == nullptr &&
556 AccessorNames[AK_Get] == nullptr) {
557 Diag(AttrNameLoc, diag::err_ms_property_no_getter_or_putter);
558 break;
559 }
560
561 Diag(Tok.getLocation(), diag::err_ms_property_unknown_accessor);
562 break;
563 }
564
565 AccessorKind Kind;
566 SourceLocation KindLoc = Tok.getLocation();
567 StringRef KindStr = Tok.getIdentifierInfo()->getName();
568 if (KindStr == "get") {
569 Kind = AK_Get;
570 } else if (KindStr == "put") {
571 Kind = AK_Put;
572
573 // Recover from the common mistake of using 'set' instead of 'put'.
574 } else if (KindStr == "set") {
575 Diag(KindLoc, diag::err_ms_property_has_set_accessor)
576 << FixItHint::CreateReplacement(KindLoc, "put");
577 Kind = AK_Put;
578
579 // Handle the mistake of forgetting the accessor kind by skipping
580 // this accessor.
581 } else if (NextToken().is(tok::comma) || NextToken().is(tok::r_paren)) {
582 Diag(KindLoc, diag::err_ms_property_missing_accessor_kind);
583 ConsumeToken();
584 HasInvalidAccessor = true;
585 goto next_property_accessor;
586
587 // Otherwise, complain about the unknown accessor kind.
588 } else {
589 Diag(KindLoc, diag::err_ms_property_unknown_accessor);
590 HasInvalidAccessor = true;
591 Kind = AK_Invalid;
592
593 // Try to keep parsing unless it doesn't look like an accessor spec.
594 if (!NextToken().is(tok::equal))
595 break;
596 }
597
598 // Consume the identifier.
599 ConsumeToken();
600
601 // Consume the '='.
602 if (!TryConsumeToken(tok::equal)) {
603 Diag(Tok.getLocation(), diag::err_ms_property_expected_equal)
604 << KindStr;
605 break;
606 }
607
608 // Expect the method name.
609 if (!Tok.is(tok::identifier)) {
610 Diag(Tok.getLocation(), diag::err_ms_property_expected_accessor_name);
611 break;
612 }
613
614 if (Kind == AK_Invalid) {
615 // Just drop invalid accessors.
616 } else if (AccessorNames[Kind] != nullptr) {
617 // Complain about the repeated accessor, ignore it, and keep parsing.
618 Diag(KindLoc, diag::err_ms_property_duplicate_accessor) << KindStr;
619 } else {
620 AccessorNames[Kind] = Tok.getIdentifierInfo();
621 }
622 ConsumeToken();
623
624 next_property_accessor:
625 // Keep processing accessors until we run out.
626 if (TryConsumeToken(tok::comma))
627 continue;
628
629 // If we run into the ')', stop without consuming it.
630 if (Tok.is(tok::r_paren))
631 break;
632
633 Diag(Tok.getLocation(), diag::err_ms_property_expected_comma_or_rparen);
634 break;
635 }
636
637 // Only add the property attribute if it was well-formed.
638 if (!HasInvalidAccessor)
639 Attrs.addNewPropertyAttr(AttrName, AttrNameLoc, nullptr, SourceLocation(),
640 AccessorNames[AK_Get], AccessorNames[AK_Put],
641 ParsedAttr::AS_Declspec);
642 T.skipToEnd();
643 return !HasInvalidAccessor;
644 }
645
646 unsigned NumArgs =
647 ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, nullptr, nullptr,
648 SourceLocation(), ParsedAttr::AS_Declspec);
649
650 // If this attribute's args were parsed, and it was expected to have
651 // arguments but none were provided, emit a diagnostic.
652 if (!Attrs.empty() && Attrs.begin()->getMaxArgs() && !NumArgs) {
653 Diag(OpenParenLoc, diag::err_attribute_requires_arguments) << AttrName;
654 return false;
655 }
656 return true;
657 }
658
659 /// [MS] decl-specifier:
660 /// __declspec ( extended-decl-modifier-seq )
661 ///
662 /// [MS] extended-decl-modifier-seq:
663 /// extended-decl-modifier[opt]
664 /// extended-decl-modifier extended-decl-modifier-seq
665 void Parser::ParseMicrosoftDeclSpecs(ParsedAttributes &Attrs,
666 SourceLocation *End) {
667 assert(getLangOpts().DeclSpecKeyword && "__declspec keyword is not enabled");
668 assert(Tok.is(tok::kw___declspec) && "Not a declspec!");
669
670 while (Tok.is(tok::kw___declspec)) {
671 ConsumeToken();
672 BalancedDelimiterTracker T(*this, tok::l_paren);
673 if (T.expectAndConsume(diag::err_expected_lparen_after, "__declspec",
674 tok::r_paren))
675 return;
676
677 // An empty declspec is perfectly legal and should not warn. Additionally,
678 // you can specify multiple attributes per declspec.
679 while (Tok.isNot(tok::r_paren)) {
680 // Attribute not present.
681 if (TryConsumeToken(tok::comma))
682 continue;
683
684 // We expect either a well-known identifier or a generic string. Anything
685 // else is a malformed declspec.
686 bool IsString = Tok.getKind() == tok::string_literal;
687 if (!IsString && Tok.getKind() != tok::identifier &&
688 Tok.getKind() != tok::kw_restrict) {
689 Diag(Tok, diag::err_ms_declspec_type);
690 T.skipToEnd();
691 return;
692 }
693
694 IdentifierInfo *AttrName;
695 SourceLocation AttrNameLoc;
696 if (IsString) {
697 SmallString<8> StrBuffer;
698 bool Invalid = false;
699 StringRef Str = PP.getSpelling(Tok, StrBuffer, &Invalid);
700 if (Invalid) {
701 T.skipToEnd();
702 return;
703 }
704 AttrName = PP.getIdentifierInfo(Str);
705 AttrNameLoc = ConsumeStringToken();
706 } else {
707 AttrName = Tok.getIdentifierInfo();
708 AttrNameLoc = ConsumeToken();
709 }
710
711 bool AttrHandled = false;
712
713 // Parse attribute arguments.
714 if (Tok.is(tok::l_paren))
715 AttrHandled = ParseMicrosoftDeclSpecArgs(AttrName, AttrNameLoc, Attrs);
716 else if (AttrName->getName() == "property")
717 // The property attribute must have an argument list.
718 Diag(Tok.getLocation(), diag::err_expected_lparen_after)
719 << AttrName->getName();
720
721 if (!AttrHandled)
722 Attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
723 ParsedAttr::AS_Declspec);
724 }
725 T.consumeClose();
726 if (End)
727 *End = T.getCloseLocation();
728 }
729 }
730
731 void Parser::ParseMicrosoftTypeAttributes(ParsedAttributes &attrs) {
732 // Treat these like attributes
733 while (true) {
734 switch (Tok.getKind()) {
735 case tok::kw___fastcall:
736 case tok::kw___stdcall:
737 case tok::kw___thiscall:
738 case tok::kw___regcall:
739 case tok::kw___cdecl:
740 case tok::kw___vectorcall:
741 case tok::kw___ptr64:
742 case tok::kw___w64:
743 case tok::kw___ptr32:
744 case tok::kw___sptr:
745 case tok::kw___uptr: {
746 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
747 SourceLocation AttrNameLoc = ConsumeToken();
748 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
749 ParsedAttr::AS_Keyword);
750 break;
751 }
752 default:
753 return;
754 }
755 }
756 }
757
758 void Parser::DiagnoseAndSkipExtendedMicrosoftTypeAttributes() {
759 SourceLocation StartLoc = Tok.getLocation();
760 SourceLocation EndLoc = SkipExtendedMicrosoftTypeAttributes();
761
762 if (EndLoc.isValid()) {
763 SourceRange Range(StartLoc, EndLoc);
764 Diag(StartLoc, diag::warn_microsoft_qualifiers_ignored) << Range;
765 }
766 }
767
768 SourceLocation Parser::SkipExtendedMicrosoftTypeAttributes() {
769 SourceLocation EndLoc;
770
771 while (true) {
772 switch (Tok.getKind()) {
773 case tok::kw_const:
774 case tok::kw_volatile:
775 case tok::kw___fastcall:
776 case tok::kw___stdcall:
777 case tok::kw___thiscall:
778 case tok::kw___cdecl:
779 case tok::kw___vectorcall:
780 case tok::kw___ptr32:
781 case tok::kw___ptr64:
782 case tok::kw___w64:
783 case tok::kw___unaligned:
784 case tok::kw___sptr:
785 case tok::kw___uptr:
786 EndLoc = ConsumeToken();
787 break;
788 default:
789 return EndLoc;
790 }
791 }
792 }
793
794 void Parser::ParseBorlandTypeAttributes(ParsedAttributes &attrs) {
795 // Treat these like attributes
796 while (Tok.is(tok::kw___pascal)) {
797 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
798 SourceLocation AttrNameLoc = ConsumeToken();
799 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
800 ParsedAttr::AS_Keyword);
801 }
802 }
803
804 void Parser::ParseOpenCLKernelAttributes(ParsedAttributes &attrs) {
805 // Treat these like attributes
806 while (Tok.is(tok::kw___kernel)) {
807 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
808 SourceLocation AttrNameLoc = ConsumeToken();
809 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
810 ParsedAttr::AS_Keyword);
811 }
812 }
813
814 void Parser::ParseOpenCLQualifiers(ParsedAttributes &Attrs) {
815 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
816 SourceLocation AttrNameLoc = Tok.getLocation();
817 Attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
818 ParsedAttr::AS_Keyword);
819 }
820
821 void Parser::ParseNullabilityTypeSpecifiers(ParsedAttributes &attrs) {
822 // Treat these like attributes, even though they're type specifiers.
823 while (true) {
824 switch (Tok.getKind()) {
825 case tok::kw__Nonnull:
826 case tok::kw__Nullable:
827 case tok::kw__Null_unspecified: {
828 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
829 SourceLocation AttrNameLoc = ConsumeToken();
830 if (!getLangOpts().ObjC)
831 Diag(AttrNameLoc, diag::ext_nullability)
832 << AttrName;
833 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
834 ParsedAttr::AS_Keyword);
835 break;
836 }
837 default:
838 return;
839 }
840 }
841 }
842
843 static bool VersionNumberSeparator(const char Separator) {
844 return (Separator == '.' || Separator == '_');
845 }
846
847 /// Parse a version number.
848 ///
849 /// version:
850 /// simple-integer
851 /// simple-integer '.' simple-integer
852 /// simple-integer '_' simple-integer
853 /// simple-integer '.' simple-integer '.' simple-integer
854 /// simple-integer '_' simple-integer '_' simple-integer
855 VersionTuple Parser::ParseVersionTuple(SourceRange &Range) {
856 Range = SourceRange(Tok.getLocation(), Tok.getEndLoc());
857
858 if (!Tok.is(tok::numeric_constant)) {
859 Diag(Tok, diag::err_expected_version);
860 SkipUntil(tok::comma, tok::r_paren,
861 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
862 return VersionTuple();
863 }
864
865 // Parse the major (and possibly minor and subminor) versions, which
866 // are stored in the numeric constant. We utilize a quirk of the
867 // lexer, which is that it handles something like 1.2.3 as a single
868 // numeric constant, rather than two separate tokens.
869 SmallString<512> Buffer;
870 Buffer.resize(Tok.getLength()+1);
871 const char *ThisTokBegin = &Buffer[0];
872
873 // Get the spelling of the token, which eliminates trigraphs, etc.
874 bool Invalid = false;
875 unsigned ActualLength = PP.getSpelling(Tok, ThisTokBegin, &Invalid);
876 if (Invalid)
877 return VersionTuple();
878
879 // Parse the major version.
880 unsigned AfterMajor = 0;
881 unsigned Major = 0;
882 while (AfterMajor < ActualLength && isDigit(ThisTokBegin[AfterMajor])) {
883 Major = Major * 10 + ThisTokBegin[AfterMajor] - '0';
884 ++AfterMajor;
885 }
886
887 if (AfterMajor == 0) {
888 Diag(Tok, diag::err_expected_version);
889 SkipUntil(tok::comma, tok::r_paren,
890 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
891 return VersionTuple();
892 }
893
894 if (AfterMajor == ActualLength) {
895 ConsumeToken();
896
897 // We only had a single version component.
898 if (Major == 0) {
899 Diag(Tok, diag::err_zero_version);
900 return VersionTuple();
901 }
902
903 return VersionTuple(Major);
904 }
905
906 const char AfterMajorSeparator = ThisTokBegin[AfterMajor];
907 if (!VersionNumberSeparator(AfterMajorSeparator)
908 || (AfterMajor + 1 == ActualLength)) {
909 Diag(Tok, diag::err_expected_version);
910 SkipUntil(tok::comma, tok::r_paren,
911 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
912 return VersionTuple();
913 }
914
915 // Parse the minor version.
916 unsigned AfterMinor = AfterMajor + 1;
917 unsigned Minor = 0;
918 while (AfterMinor < ActualLength && isDigit(ThisTokBegin[AfterMinor])) {
919 Minor = Minor * 10 + ThisTokBegin[AfterMinor] - '0';
920 ++AfterMinor;
921 }
922
923 if (AfterMinor == ActualLength) {
924 ConsumeToken();
925
926 // We had major.minor.
927 if (Major == 0 && Minor == 0) {
928 Diag(Tok, diag::err_zero_version);
929 return VersionTuple();
930 }
931
932 return VersionTuple(Major, Minor);
933 }
934
935 const char AfterMinorSeparator = ThisTokBegin[AfterMinor];
936 // If what follows is not a '.' or '_', we have a problem.
937 if (!VersionNumberSeparator(AfterMinorSeparator)) {
938 Diag(Tok, diag::err_expected_version);
939 SkipUntil(tok::comma, tok::r_paren,
940 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
941 return VersionTuple();
942 }
943
944 // Warn if separators, be it '.' or '_', do not match.
945 if (AfterMajorSeparator != AfterMinorSeparator)
946 Diag(Tok, diag::warn_expected_consistent_version_separator);
947
948 // Parse the subminor version.
949 unsigned AfterSubminor = AfterMinor + 1;
950 unsigned Subminor = 0;
951 while (AfterSubminor < ActualLength && isDigit(ThisTokBegin[AfterSubminor])) {
952 Subminor = Subminor * 10 + ThisTokBegin[AfterSubminor] - '0';
953 ++AfterSubminor;
954 }
955
956 if (AfterSubminor != ActualLength) {
957 Diag(Tok, diag::err_expected_version);
958 SkipUntil(tok::comma, tok::r_paren,
959 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
960 return VersionTuple();
961 }
962 ConsumeToken();
963 return VersionTuple(Major, Minor, Subminor);
964 }
965
966 /// Parse the contents of the "availability" attribute.
967 ///
968 /// availability-attribute:
969 /// 'availability' '(' platform ',' opt-strict version-arg-list,
970 /// opt-replacement, opt-message')'
971 ///
972 /// platform:
973 /// identifier
974 ///
975 /// opt-strict:
976 /// 'strict' ','
977 ///
978 /// version-arg-list:
979 /// version-arg
980 /// version-arg ',' version-arg-list
981 ///
982 /// version-arg:
983 /// 'introduced' '=' version
984 /// 'deprecated' '=' version
985 /// 'obsoleted' = version
986 /// 'unavailable'
987 /// opt-replacement:
988 /// 'replacement' '=' <string>
989 /// opt-message:
990 /// 'message' '=' <string>
991 void Parser::ParseAvailabilityAttribute(IdentifierInfo &Availability,
992 SourceLocation AvailabilityLoc,
993 ParsedAttributes &attrs,
994 SourceLocation *endLoc,
995 IdentifierInfo *ScopeName,
996 SourceLocation ScopeLoc,
997 ParsedAttr::Syntax Syntax) {
998 enum { Introduced, Deprecated, Obsoleted, Unknown };
999 AvailabilityChange Changes[Unknown];
1000 ExprResult MessageExpr, ReplacementExpr;
1001
1002 // Opening '('.
1003 BalancedDelimiterTracker T(*this, tok::l_paren);
1004 if (T.consumeOpen()) {
1005 Diag(Tok, diag::err_expected) << tok::l_paren;
1006 return;
1007 }
1008
1009 // Parse the platform name.
1010 if (Tok.isNot(tok::identifier)) {
1011 Diag(Tok, diag::err_availability_expected_platform);
1012 SkipUntil(tok::r_paren, StopAtSemi);
1013 return;
1014 }
1015 IdentifierLoc *Platform = ParseIdentifierLoc();
1016 if (const IdentifierInfo *const Ident = Platform->Ident) {
1017 // Canonicalize platform name from "macosx" to "macos".
1018 if (Ident->getName() == "macosx")
1019 Platform->Ident = PP.getIdentifierInfo("macos");
1020 // Canonicalize platform name from "macosx_app_extension" to
1021 // "macos_app_extension".
1022 else if (Ident->getName() == "macosx_app_extension")
1023 Platform->Ident = PP.getIdentifierInfo("macos_app_extension");
1024 else
1025 Platform->Ident = PP.getIdentifierInfo(
1026 AvailabilityAttr::canonicalizePlatformName(Ident->getName()));
1027 }
1028
1029 // Parse the ',' following the platform name.
1030 if (ExpectAndConsume(tok::comma)) {
1031 SkipUntil(tok::r_paren, StopAtSemi);
1032 return;
1033 }
1034
1035 // If we haven't grabbed the pointers for the identifiers
1036 // "introduced", "deprecated", and "obsoleted", do so now.
1037 if (!Ident_introduced) {
1038 Ident_introduced = PP.getIdentifierInfo("introduced");
1039 Ident_deprecated = PP.getIdentifierInfo("deprecated");
1040 Ident_obsoleted = PP.getIdentifierInfo("obsoleted");
1041 Ident_unavailable = PP.getIdentifierInfo("unavailable");
1042 Ident_message = PP.getIdentifierInfo("message");
1043 Ident_strict = PP.getIdentifierInfo("strict");
1044 Ident_replacement = PP.getIdentifierInfo("replacement");
1045 }
1046
1047 // Parse the optional "strict", the optional "replacement" and the set of
1048 // introductions/deprecations/removals.
1049 SourceLocation UnavailableLoc, StrictLoc;
1050 do {
1051 if (Tok.isNot(tok::identifier)) {
1052 Diag(Tok, diag::err_availability_expected_change);
1053 SkipUntil(tok::r_paren, StopAtSemi);
1054 return;
1055 }
1056 IdentifierInfo *Keyword = Tok.getIdentifierInfo();
1057 SourceLocation KeywordLoc = ConsumeToken();
1058
1059 if (Keyword == Ident_strict) {
1060 if (StrictLoc.isValid()) {
1061 Diag(KeywordLoc, diag::err_availability_redundant)
1062 << Keyword << SourceRange(StrictLoc);
1063 }
1064 StrictLoc = KeywordLoc;
1065 continue;
1066 }
1067
1068 if (Keyword == Ident_unavailable) {
1069 if (UnavailableLoc.isValid()) {
1070 Diag(KeywordLoc, diag::err_availability_redundant)
1071 << Keyword << SourceRange(UnavailableLoc);
1072 }
1073 UnavailableLoc = KeywordLoc;
1074 continue;
1075 }
1076
1077 if (Keyword == Ident_deprecated && Platform->Ident &&
1078 Platform->Ident->isStr("swift")) {
1079 // For swift, we deprecate for all versions.
1080 if (Changes[Deprecated].KeywordLoc.isValid()) {
1081 Diag(KeywordLoc, diag::err_availability_redundant)
1082 << Keyword
1083 << SourceRange(Changes[Deprecated].KeywordLoc);
1084 }
1085
1086 Changes[Deprecated].KeywordLoc = KeywordLoc;
1087 // Use a fake version here.
1088 Changes[Deprecated].Version = VersionTuple(1);
1089 continue;
1090 }
1091
1092 if (Tok.isNot(tok::equal)) {
1093 Diag(Tok, diag::err_expected_after) << Keyword << tok::equal;
1094 SkipUntil(tok::r_paren, StopAtSemi);
1095 return;
1096 }
1097 ConsumeToken();
1098 if (Keyword == Ident_message || Keyword == Ident_replacement) {
1099 if (Tok.isNot(tok::string_literal)) {
1100 Diag(Tok, diag::err_expected_string_literal)
1101 << /*Source='availability attribute'*/2;
1102 SkipUntil(tok::r_paren, StopAtSemi);
1103 return;
1104 }
1105 if (Keyword == Ident_message)
1106 MessageExpr = ParseStringLiteralExpression();
1107 else
1108 ReplacementExpr = ParseStringLiteralExpression();
1109 // Also reject wide string literals.
1110 if (StringLiteral *MessageStringLiteral =
1111 cast_or_null<StringLiteral>(MessageExpr.get())) {
1112 if (MessageStringLiteral->getCharByteWidth() != 1) {
1113 Diag(MessageStringLiteral->getSourceRange().getBegin(),
1114 diag::err_expected_string_literal)
1115 << /*Source='availability attribute'*/ 2;
1116 SkipUntil(tok::r_paren, StopAtSemi);
1117 return;
1118 }
1119 }
1120 if (Keyword == Ident_message)
1121 break;
1122 else
1123 continue;
1124 }
1125
1126 // Special handling of 'NA' only when applied to introduced or
1127 // deprecated.
1128 if ((Keyword == Ident_introduced || Keyword == Ident_deprecated) &&
1129 Tok.is(tok::identifier)) {
1130 IdentifierInfo *NA = Tok.getIdentifierInfo();
1131 if (NA->getName() == "NA") {
1132 ConsumeToken();
1133 if (Keyword == Ident_introduced)
1134 UnavailableLoc = KeywordLoc;
1135 continue;
1136 }
1137 }
1138
1139 SourceRange VersionRange;
1140 VersionTuple Version = ParseVersionTuple(VersionRange);
1141
1142 if (Version.empty()) {
1143 SkipUntil(tok::r_paren, StopAtSemi);
1144 return;
1145 }
1146
1147 unsigned Index;
1148 if (Keyword == Ident_introduced)
1149 Index = Introduced;
1150 else if (Keyword == Ident_deprecated)
1151 Index = Deprecated;
1152 else if (Keyword == Ident_obsoleted)
1153 Index = Obsoleted;
1154 else
1155 Index = Unknown;
1156
1157 if (Index < Unknown) {
1158 if (!Changes[Index].KeywordLoc.isInvalid()) {
1159 Diag(KeywordLoc, diag::err_availability_redundant)
1160 << Keyword
1161 << SourceRange(Changes[Index].KeywordLoc,
1162 Changes[Index].VersionRange.getEnd());
1163 }
1164
1165 Changes[Index].KeywordLoc = KeywordLoc;
1166 Changes[Index].Version = Version;
1167 Changes[Index].VersionRange = VersionRange;
1168 } else {
1169 Diag(KeywordLoc, diag::err_availability_unknown_change)
1170 << Keyword << VersionRange;
1171 }
1172
1173 } while (TryConsumeToken(tok::comma));
1174
1175 // Closing ')'.
1176 if (T.consumeClose())
1177 return;
1178
1179 if (endLoc)
1180 *endLoc = T.getCloseLocation();
1181
1182 // The 'unavailable' availability cannot be combined with any other
1183 // availability changes. Make sure that hasn't happened.
1184 if (UnavailableLoc.isValid()) {
1185 bool Complained = false;
1186 for (unsigned Index = Introduced; Index != Unknown; ++Index) {
1187 if (Changes[Index].KeywordLoc.isValid()) {
1188 if (!Complained) {
1189 Diag(UnavailableLoc, diag::warn_availability_and_unavailable)
1190 << SourceRange(Changes[Index].KeywordLoc,
1191 Changes[Index].VersionRange.getEnd());
1192 Complained = true;
1193 }
1194
1195 // Clear out the availability.
1196 Changes[Index] = AvailabilityChange();
1197 }
1198 }
1199 }
1200
1201 // Record this attribute
1202 attrs.addNew(&Availability,
1203 SourceRange(AvailabilityLoc, T.getCloseLocation()),
1204 ScopeName, ScopeLoc,
1205 Platform,
1206 Changes[Introduced],
1207 Changes[Deprecated],
1208 Changes[Obsoleted],
1209 UnavailableLoc, MessageExpr.get(),
1210 Syntax, StrictLoc, ReplacementExpr.get());
1211 }
1212
1213 /// Parse the contents of the "external_source_symbol" attribute.
1214 ///
1215 /// external-source-symbol-attribute:
1216 /// 'external_source_symbol' '(' keyword-arg-list ')'
1217 ///
1218 /// keyword-arg-list:
1219 /// keyword-arg
1220 /// keyword-arg ',' keyword-arg-list
1221 ///
1222 /// keyword-arg:
1223 /// 'language' '=' <string>
1224 /// 'defined_in' '=' <string>
1225 /// 'generated_declaration'
1226 void Parser::ParseExternalSourceSymbolAttribute(
1227 IdentifierInfo &ExternalSourceSymbol, SourceLocation Loc,
1228 ParsedAttributes &Attrs, SourceLocation *EndLoc, IdentifierInfo *ScopeName,
1229 SourceLocation ScopeLoc, ParsedAttr::Syntax Syntax) {
1230 // Opening '('.
1231 BalancedDelimiterTracker T(*this, tok::l_paren);
1232 if (T.expectAndConsume())
1233 return;
1234
1235 // Initialize the pointers for the keyword identifiers when required.
1236 if (!Ident_language) {
1237 Ident_language = PP.getIdentifierInfo("language");
1238 Ident_defined_in = PP.getIdentifierInfo("defined_in");
1239 Ident_generated_declaration = PP.getIdentifierInfo("generated_declaration");
1240 }
1241
1242 ExprResult Language;
1243 bool HasLanguage = false;
1244 ExprResult DefinedInExpr;
1245 bool HasDefinedIn = false;
1246 IdentifierLoc *GeneratedDeclaration = nullptr;
1247
1248 // Parse the language/defined_in/generated_declaration keywords
1249 do {
1250 if (Tok.isNot(tok::identifier)) {
1251 Diag(Tok, diag::err_external_source_symbol_expected_keyword);
1252 SkipUntil(tok::r_paren, StopAtSemi);
1253 return;
1254 }
1255
1256 SourceLocation KeywordLoc = Tok.getLocation();
1257 IdentifierInfo *Keyword = Tok.getIdentifierInfo();
1258 if (Keyword == Ident_generated_declaration) {
1259 if (GeneratedDeclaration) {
1260 Diag(Tok, diag::err_external_source_symbol_duplicate_clause) << Keyword;
1261 SkipUntil(tok::r_paren, StopAtSemi);
1262 return;
1263 }
1264 GeneratedDeclaration = ParseIdentifierLoc();
1265 continue;
1266 }
1267
1268 if (Keyword != Ident_language && Keyword != Ident_defined_in) {
1269 Diag(Tok, diag::err_external_source_symbol_expected_keyword);
1270 SkipUntil(tok::r_paren, StopAtSemi);
1271 return;
1272 }
1273
1274 ConsumeToken();
1275 if (ExpectAndConsume(tok::equal, diag::err_expected_after,
1276 Keyword->getName())) {
1277 SkipUntil(tok::r_paren, StopAtSemi);
1278 return;
1279 }
1280
1281 bool HadLanguage = HasLanguage, HadDefinedIn = HasDefinedIn;
1282 if (Keyword == Ident_language)
1283 HasLanguage = true;
1284 else
1285 HasDefinedIn = true;
1286
1287 if (Tok.isNot(tok::string_literal)) {
1288 Diag(Tok, diag::err_expected_string_literal)
1289 << /*Source='external_source_symbol attribute'*/ 3
1290 << /*language | source container*/ (Keyword != Ident_language);
1291 SkipUntil(tok::comma, tok::r_paren, StopAtSemi | StopBeforeMatch);
1292 continue;
1293 }
1294 if (Keyword == Ident_language) {
1295 if (HadLanguage) {
1296 Diag(KeywordLoc, diag::err_external_source_symbol_duplicate_clause)
1297 << Keyword;
1298 ParseStringLiteralExpression();
1299 continue;
1300 }
1301 Language = ParseStringLiteralExpression();
1302 } else {
1303 assert(Keyword == Ident_defined_in && "Invalid clause keyword!");
1304 if (HadDefinedIn) {
1305 Diag(KeywordLoc, diag::err_external_source_symbol_duplicate_clause)
1306 << Keyword;
1307 ParseStringLiteralExpression();
1308 continue;
1309 }
1310 DefinedInExpr = ParseStringLiteralExpression();
1311 }
1312 } while (TryConsumeToken(tok::comma));
1313
1314 // Closing ')'.
1315 if (T.consumeClose())
1316 return;
1317 if (EndLoc)
1318 *EndLoc = T.getCloseLocation();
1319
1320 ArgsUnion Args[] = {Language.get(), DefinedInExpr.get(),
1321 GeneratedDeclaration};
1322 Attrs.addNew(&ExternalSourceSymbol, SourceRange(Loc, T.getCloseLocation()),
1323 ScopeName, ScopeLoc, Args, llvm::array_lengthof(Args), Syntax);
1324 }
1325
1326 /// Parse the contents of the "objc_bridge_related" attribute.
1327 /// objc_bridge_related '(' related_class ',' opt-class_method ',' opt-instance_method ')'
1328 /// related_class:
1329 /// Identifier
1330 ///
1331 /// opt-class_method:
1332 /// Identifier: | <empty>
1333 ///
1334 /// opt-instance_method:
1335 /// Identifier | <empty>
1336 ///
1337 void Parser::ParseObjCBridgeRelatedAttribute(IdentifierInfo &ObjCBridgeRelated,
1338 SourceLocation ObjCBridgeRelatedLoc,
1339 ParsedAttributes &attrs,
1340 SourceLocation *endLoc,
1341 IdentifierInfo *ScopeName,
1342 SourceLocation ScopeLoc,
1343 ParsedAttr::Syntax Syntax) {
1344 // Opening '('.
1345 BalancedDelimiterTracker T(*this, tok::l_paren);
1346 if (T.consumeOpen()) {
1347 Diag(Tok, diag::err_expected) << tok::l_paren;
1348 return;
1349 }
1350
1351 // Parse the related class name.
1352 if (Tok.isNot(tok::identifier)) {
1353 Diag(Tok, diag::err_objcbridge_related_expected_related_class);
1354 SkipUntil(tok::r_paren, StopAtSemi);
1355 return;
1356 }
1357 IdentifierLoc *RelatedClass = ParseIdentifierLoc();
1358 if (ExpectAndConsume(tok::comma)) {
1359 SkipUntil(tok::r_paren, StopAtSemi);
1360 return;
1361 }
1362
1363 // Parse class method name. It's non-optional in the sense that a trailing
1364 // comma is required, but it can be the empty string, and then we record a
1365 // nullptr.
1366 IdentifierLoc *ClassMethod = nullptr;
1367 if (Tok.is(tok::identifier)) {
1368 ClassMethod = ParseIdentifierLoc();
1369 if (!TryConsumeToken(tok::colon)) {
1370 Diag(Tok, diag::err_objcbridge_related_selector_name);
1371 SkipUntil(tok::r_paren, StopAtSemi);
1372 return;
1373 }
1374 }
1375 if (!TryConsumeToken(tok::comma)) {
1376 if (Tok.is(tok::colon))
1377 Diag(Tok, diag::err_objcbridge_related_selector_name);
1378 else
1379 Diag(Tok, diag::err_expected) << tok::comma;
1380 SkipUntil(tok::r_paren, StopAtSemi);
1381 return;
1382 }
1383
1384 // Parse instance method name. Also non-optional but empty string is
1385 // permitted.
1386 IdentifierLoc *InstanceMethod = nullptr;
1387 if (Tok.is(tok::identifier))
1388 InstanceMethod = ParseIdentifierLoc();
1389 else if (Tok.isNot(tok::r_paren)) {
1390 Diag(Tok, diag::err_expected) << tok::r_paren;
1391 SkipUntil(tok::r_paren, StopAtSemi);
1392 return;
1393 }
1394
1395 // Closing ')'.
1396 if (T.consumeClose())
1397 return;
1398
1399 if (endLoc)
1400 *endLoc = T.getCloseLocation();
1401
1402 // Record this attribute
1403 attrs.addNew(&ObjCBridgeRelated,
1404 SourceRange(ObjCBridgeRelatedLoc, T.getCloseLocation()),
1405 ScopeName, ScopeLoc,
1406 RelatedClass,
1407 ClassMethod,
1408 InstanceMethod,
1409 Syntax);
1410 }
1411
1412 // Late Parsed Attributes:
1413 // See other examples of late parsing in lib/Parse/ParseCXXInlineMethods
1414
1415 void Parser::LateParsedDeclaration::ParseLexedAttributes() {}
1416
1417 void Parser::LateParsedClass::ParseLexedAttributes() {
1418 Self->ParseLexedAttributes(*Class);
1419 }
1420
1421 void Parser::LateParsedAttribute::ParseLexedAttributes() {
1422 Self->ParseLexedAttribute(*this, true, false);
1423 }
1424
1425 /// Wrapper class which calls ParseLexedAttribute, after setting up the
1426 /// scope appropriately.
1427 void Parser::ParseLexedAttributes(ParsingClass &Class) {
1428 // Deal with templates
1429 // FIXME: Test cases to make sure this does the right thing for templates.
1430 bool HasTemplateScope = !Class.TopLevelClass && Class.TemplateScope;
1431 ParseScope ClassTemplateScope(this, Scope::TemplateParamScope,
1432 HasTemplateScope);
1433 if (HasTemplateScope)
1434 Actions.ActOnReenterTemplateScope(getCurScope(), Class.TagOrTemplate);
1435
1436 // Set or update the scope flags.
1437 bool AlreadyHasClassScope = Class.TopLevelClass;
1438 unsigned ScopeFlags = Scope::ClassScope|Scope::DeclScope;
1439 ParseScope ClassScope(this, ScopeFlags, !AlreadyHasClassScope);
1440 ParseScopeFlags ClassScopeFlags(this, ScopeFlags, AlreadyHasClassScope);
1441
1442 // Enter the scope of nested classes
1443 if (!AlreadyHasClassScope)
1444 Actions.ActOnStartDelayedMemberDeclarations(getCurScope(),
1445 Class.TagOrTemplate);
1446 if (!Class.LateParsedDeclarations.empty()) {
1447 for (unsigned i = 0, ni = Class.LateParsedDeclarations.size(); i < ni; ++i){
1448 Class.LateParsedDeclarations[i]->ParseLexedAttributes();
1449 }
1450 }
1451
1452 if (!AlreadyHasClassScope)
1453 Actions.ActOnFinishDelayedMemberDeclarations(getCurScope(),
1454 Class.TagOrTemplate);
1455 }
1456
1457 /// Parse all attributes in LAs, and attach them to Decl D.
1458 void Parser::ParseLexedAttributeList(LateParsedAttrList &LAs, Decl *D,
1459 bool EnterScope, bool OnDefinition) {
1460 assert(LAs.parseSoon() &&
1461 "Attribute list should be marked for immediate parsing.");
1462 for (unsigned i = 0, ni = LAs.size(); i < ni; ++i) {
1463 if (D)
1464 LAs[i]->addDecl(D);
1465 ParseLexedAttribute(*LAs[i], EnterScope, OnDefinition);
1466 delete LAs[i];
1467 }
1468 LAs.clear();
1469 }
1470
1471 /// Finish parsing an attribute for which parsing was delayed.
1472 /// This will be called at the end of parsing a class declaration
1473 /// for each LateParsedAttribute. We consume the saved tokens and
1474 /// create an attribute with the arguments filled in. We add this
1475 /// to the Attribute list for the decl.
1476 void Parser::ParseLexedAttribute(LateParsedAttribute &LA,
1477 bool EnterScope, bool OnDefinition) {
1478 // Create a fake EOF so that attribute parsing won't go off the end of the
1479 // attribute.
1480 Token AttrEnd;
1481 AttrEnd.startToken();
1482 AttrEnd.setKind(tok::eof);
1483 AttrEnd.setLocation(Tok.getLocation());
1484 AttrEnd.setEofData(LA.Toks.data());
1485 LA.Toks.push_back(AttrEnd);
1486
1487 // Append the current token at the end of the new token stream so that it
1488 // doesn't get lost.
1489 LA.Toks.push_back(Tok);
1490 PP.EnterTokenStream(LA.Toks, true, /*IsReinject=*/true);
1491 // Consume the previously pushed token.
1492 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
1493
1494 ParsedAttributes Attrs(AttrFactory);
1495 SourceLocation endLoc;
1496
1497 if (LA.Decls.size() > 0) {
1498 Decl *D = LA.Decls[0];
1499 NamedDecl *ND = dyn_cast<NamedDecl>(D);
1500 RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext());
1501
1502 // Allow 'this' within late-parsed attributes.
1503 Sema::CXXThisScopeRAII ThisScope(Actions, RD, Qualifiers(),
1504 ND && ND->isCXXInstanceMember());
1505
1506 if (LA.Decls.size() == 1) {
1507 // If the Decl is templatized, add template parameters to scope.
1508 bool HasTemplateScope = EnterScope && D->isTemplateDecl();
1509 ParseScope TempScope(this, Scope::TemplateParamScope, HasTemplateScope);
1510 if (HasTemplateScope)
1511 Actions.ActOnReenterTemplateScope(Actions.CurScope, D);
1512
1513 // If the Decl is on a function, add function parameters to the scope.
1514 bool HasFunScope = EnterScope && D->isFunctionOrFunctionTemplate();
1515 ParseScope FnScope(
1516 this, Scope::FnScope | Scope::DeclScope | Scope::CompoundStmtScope,
1517 HasFunScope);
1518 if (HasFunScope)
1519 Actions.ActOnReenterFunctionContext(Actions.CurScope, D);
1520
1521 ParseGNUAttributeArgs(&LA.AttrName, LA.AttrNameLoc, Attrs, &endLoc,
1522 nullptr, SourceLocation(), ParsedAttr::AS_GNU,
1523 nullptr);
1524
1525 if (HasFunScope) {
1526 Actions.ActOnExitFunctionContext();
1527 FnScope.Exit(); // Pop scope, and remove Decls from IdResolver
1528 }
1529 if (HasTemplateScope) {
1530 TempScope.Exit();
1531 }
1532 } else {
1533 // If there are multiple decls, then the decl cannot be within the
1534 // function scope.
1535 ParseGNUAttributeArgs(&LA.AttrName, LA.AttrNameLoc, Attrs, &endLoc,
1536 nullptr, SourceLocation(), ParsedAttr::AS_GNU,
1537 nullptr);
1538 }
1539 } else {
1540 Diag(Tok, diag::warn_attribute_no_decl) << LA.AttrName.getName();
1541 }
1542
1543 if (OnDefinition && !Attrs.empty() && !Attrs.begin()->isCXX11Attribute() &&
1544 Attrs.begin()->isKnownToGCC())
1545 Diag(Tok, diag::warn_attribute_on_function_definition)
1546 << &LA.AttrName;
1547
1548 for (unsigned i = 0, ni = LA.Decls.size(); i < ni; ++i)
1549 Actions.ActOnFinishDelayedAttribute(getCurScope(), LA.Decls[i], Attrs);
1550
1551 // Due to a parsing error, we either went over the cached tokens or
1552 // there are still cached tokens left, so we skip the leftover tokens.
1553 while (Tok.isNot(tok::eof))
1554 ConsumeAnyToken();
1555
1556 if (Tok.is(tok::eof) && Tok.getEofData() == AttrEnd.getEofData())
1557 ConsumeAnyToken();
1558 }
1559
1560 void Parser::ParseTypeTagForDatatypeAttribute(IdentifierInfo &AttrName,
1561 SourceLocation AttrNameLoc,
1562 ParsedAttributes &Attrs,
1563 SourceLocation *EndLoc,
1564 IdentifierInfo *ScopeName,
1565 SourceLocation ScopeLoc,
1566 ParsedAttr::Syntax Syntax) {
1567 assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
1568
1569 BalancedDelimiterTracker T(*this, tok::l_paren);
1570 T.consumeOpen();
1571
1572 if (Tok.isNot(tok::identifier)) {
1573 Diag(Tok, diag::err_expected) << tok::identifier;
1574 T.skipToEnd();
1575 return;
1576 }
1577 IdentifierLoc *ArgumentKind = ParseIdentifierLoc();
1578
1579 if (ExpectAndConsume(tok::comma)) {
1580 T.skipToEnd();
1581 return;
1582 }
1583
1584 SourceRange MatchingCTypeRange;
1585 TypeResult MatchingCType = ParseTypeName(&MatchingCTypeRange);
1586 if (MatchingCType.isInvalid()) {
1587 T.skipToEnd();
1588 return;
1589 }
1590
1591 bool LayoutCompatible = false;
1592 bool MustBeNull = false;
1593 while (TryConsumeToken(tok::comma)) {
1594 if (Tok.isNot(tok::identifier)) {
1595 Diag(Tok, diag::err_expected) << tok::identifier;
1596 T.skipToEnd();
1597 return;
1598 }
1599 IdentifierInfo *Flag = Tok.getIdentifierInfo();
1600 if (Flag->isStr("layout_compatible"))
1601 LayoutCompatible = true;
1602 else if (Flag->isStr("must_be_null"))
1603 MustBeNull = true;
1604 else {
1605 Diag(Tok, diag::err_type_safety_unknown_flag) << Flag;
1606 T.skipToEnd();
1607 return;
1608 }
1609 ConsumeToken(); // consume flag
1610 }
1611
1612 if (!T.consumeClose()) {
1613 Attrs.addNewTypeTagForDatatype(&AttrName, AttrNameLoc, ScopeName, ScopeLoc,
1614 ArgumentKind, MatchingCType.get(),
1615 LayoutCompatible, MustBeNull, Syntax);
1616 }
1617
1618 if (EndLoc)
1619 *EndLoc = T.getCloseLocation();
1620 }
1621
1622 /// DiagnoseProhibitedCXX11Attribute - We have found the opening square brackets
1623 /// of a C++11 attribute-specifier in a location where an attribute is not
1624 /// permitted. By C++11 [dcl.attr.grammar]p6, this is ill-formed. Diagnose this
1625 /// situation.
1626 ///
1627 /// \return \c true if we skipped an attribute-like chunk of tokens, \c false if
1628 /// this doesn't appear to actually be an attribute-specifier, and the caller
1629 /// should try to parse it.
1630 bool Parser::DiagnoseProhibitedCXX11Attribute() {
1631 assert(Tok.is(tok::l_square) && NextToken().is(tok::l_square));
1632
1633 switch (isCXX11AttributeSpecifier(/*Disambiguate*/true)) {
1634 case CAK_NotAttributeSpecifier:
1635 // No diagnostic: we're in Obj-C++11 and this is not actually an attribute.
1636 return false;
1637
1638 case CAK_InvalidAttributeSpecifier:
1639 Diag(Tok.getLocation(), diag::err_l_square_l_square_not_attribute);
1640 return false;
1641
1642 case CAK_AttributeSpecifier:
1643 // Parse and discard the attributes.
1644 SourceLocation BeginLoc = ConsumeBracket();
1645 ConsumeBracket();
1646 SkipUntil(tok::r_square);
1647 assert(Tok.is(tok::r_square) && "isCXX11AttributeSpecifier lied");
1648 SourceLocation EndLoc = ConsumeBracket();
1649 Diag(BeginLoc, diag::err_attributes_not_allowed)
1650 << SourceRange(BeginLoc, EndLoc);
1651 return true;
1652 }
1653 llvm_unreachable("All cases handled above.");
1654 }
1655
1656 /// We have found the opening square brackets of a C++11
1657 /// attribute-specifier in a location where an attribute is not permitted, but
1658 /// we know where the attributes ought to be written. Parse them anyway, and
1659 /// provide a fixit moving them to the right place.
1660 void Parser::DiagnoseMisplacedCXX11Attribute(ParsedAttributesWithRange &Attrs,
1661 SourceLocation CorrectLocation) {
1662 assert((Tok.is(tok::l_square) && NextToken().is(tok::l_square)) ||
1663 Tok.is(tok::kw_alignas));
1664
1665 // Consume the attributes.
1666 SourceLocation Loc = Tok.getLocation();
1667 ParseCXX11Attributes(Attrs);
1668 CharSourceRange AttrRange(SourceRange(Loc, Attrs.Range.getEnd()), true);
1669 // FIXME: use err_attributes_misplaced
1670 Diag(Loc, diag::err_attributes_not_allowed)
1671 << FixItHint::CreateInsertionFromRange(CorrectLocation, AttrRange)
1672 << FixItHint::CreateRemoval(AttrRange);
1673 }
1674
1675 void Parser::DiagnoseProhibitedAttributes(
1676 const SourceRange &Range, const SourceLocation CorrectLocation) {
1677 if (CorrectLocation.isValid()) {
1678 CharSourceRange AttrRange(Range, true);
1679 Diag(CorrectLocation, diag::err_attributes_misplaced)
1680 << FixItHint::CreateInsertionFromRange(CorrectLocation, AttrRange)
1681 << FixItHint::CreateRemoval(AttrRange);
1682 } else
1683 Diag(Range.getBegin(), diag::err_attributes_not_allowed) << Range;
1684 }
1685
1686 void Parser::ProhibitCXX11Attributes(ParsedAttributesWithRange &Attrs,
1687 unsigned DiagID) {
1688 for (const ParsedAttr &AL : Attrs) {
1689 if (!AL.isCXX11Attribute() && !AL.isC2xAttribute())
1690 continue;
1691 if (AL.getKind() == ParsedAttr::UnknownAttribute)
1692 Diag(AL.getLoc(), diag::warn_unknown_attribute_ignored) << AL;
1693 else {
1694 Diag(AL.getLoc(), DiagID) << AL;
1695 AL.setInvalid();
1696 }
1697 }
1698 }
1699
1700 // Usually, `__attribute__((attrib)) class Foo {} var` means that attribute
1701 // applies to var, not the type Foo.
1702 // As an exception to the rule, __declspec(align(...)) before the
1703 // class-key affects the type instead of the variable.
1704 // Also, Microsoft-style [attributes] seem to affect the type instead of the
1705 // variable.
1706 // This function moves attributes that should apply to the type off DS to Attrs.
1707 void Parser::stripTypeAttributesOffDeclSpec(ParsedAttributesWithRange &Attrs,
1708 DeclSpec &DS,
1709 Sema::TagUseKind TUK) {
1710 if (TUK == Sema::TUK_Reference)
1711 return;
1712
1713 llvm::SmallVector<ParsedAttr *, 1> ToBeMoved;
1714
1715 for (ParsedAttr &AL : DS.getAttributes()) {
1716 if ((AL.getKind() == ParsedAttr::AT_Aligned &&
1717 AL.isDeclspecAttribute()) ||
1718 AL.isMicrosoftAttribute())
1719 ToBeMoved.push_back(&AL);
1720 }
1721
1722 for (ParsedAttr *AL : ToBeMoved) {
1723 DS.getAttributes().remove(AL);
1724 Attrs.addAtEnd(AL);
1725 }
1726 }
1727
1728 /// ParseDeclaration - Parse a full 'declaration', which consists of
1729 /// declaration-specifiers, some number of declarators, and a semicolon.
1730 /// 'Context' should be a DeclaratorContext value. This returns the
1731 /// location of the semicolon in DeclEnd.
1732 ///
1733 /// declaration: [C99 6.7]
1734 /// block-declaration ->
1735 /// simple-declaration
1736 /// others [FIXME]
1737 /// [C++] template-declaration
1738 /// [C++] namespace-definition
1739 /// [C++] using-directive
1740 /// [C++] using-declaration
1741 /// [C++11/C11] static_assert-declaration
1742 /// others... [FIXME]
1743 ///
1744 Parser::DeclGroupPtrTy
1745 Parser::ParseDeclaration(DeclaratorContext Context, SourceLocation &DeclEnd,
1746 ParsedAttributesWithRange &attrs,
1747 SourceLocation *DeclSpecStart) {
1748 ParenBraceBracketBalancer BalancerRAIIObj(*this);
1749 // Must temporarily exit the objective-c container scope for
1750 // parsing c none objective-c decls.
1751 ObjCDeclContextSwitch ObjCDC(*this);
1752
1753 Decl *SingleDecl = nullptr;
1754 switch (Tok.getKind()) {
1755 case tok::kw_template:
1756 case tok::kw_export:
1757 ProhibitAttributes(attrs);
1758 SingleDecl = ParseDeclarationStartingWithTemplate(Context, DeclEnd, attrs);
1759 break;
1760 case tok::kw_inline:
1761 // Could be the start of an inline namespace. Allowed as an ext in C++03.
1762 if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_namespace)) {
1763 ProhibitAttributes(attrs);
1764 SourceLocation InlineLoc = ConsumeToken();
1765 return ParseNamespace(Context, DeclEnd, InlineLoc);
1766 }
1767 return ParseSimpleDeclaration(Context, DeclEnd, attrs, true, nullptr,
1768 DeclSpecStart);
1769 case tok::kw_namespace:
1770 ProhibitAttributes(attrs);
1771 return ParseNamespace(Context, DeclEnd);
1772 case tok::kw_using:
1773 return ParseUsingDirectiveOrDeclaration(Context, ParsedTemplateInfo(),
1774 DeclEnd, attrs);
1775 case tok::kw_static_assert:
1776 case tok::kw__Static_assert:
1777 ProhibitAttributes(attrs);
1778 SingleDecl = ParseStaticAssertDeclaration(DeclEnd);
1779 break;
1780 default:
1781 return ParseSimpleDeclaration(Context, DeclEnd, attrs, true, nullptr,
1782 DeclSpecStart);
1783 }
1784
1785 // This routine returns a DeclGroup, if the thing we parsed only contains a
1786 // single decl, convert it now.
1787 return Actions.ConvertDeclToDeclGroup(SingleDecl);
1788 }
1789
1790 /// simple-declaration: [C99 6.7: declaration] [C++ 7p1: dcl.dcl]
1791 /// declaration-specifiers init-declarator-list[opt] ';'
1792 /// [C++11] attribute-specifier-seq decl-specifier-seq[opt]
1793 /// init-declarator-list ';'
1794 ///[C90/C++]init-declarator-list ';' [TODO]
1795 /// [OMP] threadprivate-directive
1796 /// [OMP] allocate-directive [TODO]
1797 ///
1798 /// for-range-declaration: [C++11 6.5p1: stmt.ranged]
1799 /// attribute-specifier-seq[opt] type-specifier-seq declarator
1800 ///
1801 /// If RequireSemi is false, this does not check for a ';' at the end of the
1802 /// declaration. If it is true, it checks for and eats it.
1803 ///
1804 /// If FRI is non-null, we might be parsing a for-range-declaration instead
1805 /// of a simple-declaration. If we find that we are, we also parse the
1806 /// for-range-initializer, and place it here.
1807 ///
1808 /// DeclSpecStart is used when decl-specifiers are parsed before parsing
1809 /// the Declaration. The SourceLocation for this Decl is set to
1810 /// DeclSpecStart if DeclSpecStart is non-null.
1811 Parser::DeclGroupPtrTy Parser::ParseSimpleDeclaration(
1812 DeclaratorContext Context, SourceLocation &DeclEnd,
1813 ParsedAttributesWithRange &Attrs, bool RequireSemi, ForRangeInit *FRI,
1814 SourceLocation *DeclSpecStart) {
1815 // Parse the common declaration-specifiers piece.
1816 ParsingDeclSpec DS(*this);
1817
1818 DeclSpecContext DSContext = getDeclSpecContextFromDeclaratorContext(Context);
1819 ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS_none, DSContext);
1820
1821 // If we had a free-standing type definition with a missing semicolon, we
1822 // may get this far before the problem becomes obvious.
1823 if (DS.hasTagDefinition() &&
1824 DiagnoseMissingSemiAfterTagDefinition(DS, AS_none, DSContext))
1825 return nullptr;
1826
1827 // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };"
1828 // declaration-specifiers init-declarator-list[opt] ';'
1829 if (Tok.is(tok::semi)) {
1830 ProhibitAttributes(Attrs);
1831 DeclEnd = Tok.getLocation();
1832 if (RequireSemi) ConsumeToken();
1833 RecordDecl *AnonRecord = nullptr;
1834 Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
1835 DS, AnonRecord);
1836 DS.complete(TheDecl);
1837 if (AnonRecord) {
1838 Decl* decls[] = {AnonRecord, TheDecl};
1839 return Actions.BuildDeclaratorGroup(decls);
1840 }
1841 return Actions.ConvertDeclToDeclGroup(TheDecl);
1842 }
1843
1844 if (DeclSpecStart)
1845 DS.SetRangeStart(*DeclSpecStart);
1846
1847 DS.takeAttributesFrom(Attrs);
1848 return ParseDeclGroup(DS, Context, &DeclEnd, FRI);
1849 }
1850
1851 /// Returns true if this might be the start of a declarator, or a common typo
1852 /// for a declarator.
1853 bool Parser::MightBeDeclarator(DeclaratorContext Context) {
1854 switch (Tok.getKind()) {
1855 case tok::annot_cxxscope:
1856 case tok::annot_template_id:
1857 case tok::caret:
1858 case tok::code_completion:
1859 case tok::coloncolon:
1860 case tok::ellipsis:
1861 case tok::kw___attribute:
1862 case tok::kw_operator:
1863 case tok::l_paren:
1864 case tok::star:
1865 return true;
1866
1867 case tok::amp:
1868 case tok::ampamp:
1869 return getLangOpts().CPlusPlus;
1870
1871 case tok::l_square: // Might be an attribute on an unnamed bit-field.
1872 return Context == DeclaratorContext::MemberContext &&
1873 getLangOpts().CPlusPlus11 && NextToken().is(tok::l_square);
1874
1875 case tok::colon: // Might be a typo for '::' or an unnamed bit-field.
1876 return Context == DeclaratorContext::MemberContext ||
1877 getLangOpts().CPlusPlus;
1878
1879 case tok::identifier:
1880 switch (NextToken().getKind()) {
1881 case tok::code_completion:
1882 case tok::coloncolon:
1883 case tok::comma:
1884 case tok::equal:
1885 case tok::equalequal: // Might be a typo for '='.
1886 case tok::kw_alignas:
1887 case tok::kw_asm:
1888 case tok::kw___attribute:
1889 case tok::l_brace:
1890 case tok::l_paren:
1891 case tok::l_square:
1892 case tok::less:
1893 case tok::r_brace:
1894 case tok::r_paren:
1895 case tok::r_square:
1896 case tok::semi:
1897 return true;
1898
1899 case tok::colon:
1900 // At namespace scope, 'identifier:' is probably a typo for 'identifier::'
1901 // and in block scope it's probably a label. Inside a class definition,
1902 // this is a bit-field.
1903 return Context == DeclaratorContext::MemberContext ||
1904 (getLangOpts().CPlusPlus &&
1905 Context == DeclaratorContext::FileContext);
1906
1907 case tok::identifier: // Possible virt-specifier.
1908 return getLangOpts().CPlusPlus11 && isCXX11VirtSpecifier(NextToken());
1909
1910 default:
1911 return false;
1912 }
1913
1914 default:
1915 return false;
1916 }
1917 }
1918
1919 /// Skip until we reach something which seems like a sensible place to pick
1920 /// up parsing after a malformed declaration. This will sometimes stop sooner
1921 /// than SkipUntil(tok::r_brace) would, but will never stop later.
1922 void Parser::SkipMalformedDecl() {
1923 while (true) {
1924 switch (Tok.getKind()) {
1925 case tok::l_brace:
1926 // Skip until matching }, then stop. We've probably skipped over
1927 // a malformed class or function definition or similar.
1928 ConsumeBrace();
1929 SkipUntil(tok::r_brace);
1930 if (Tok.isOneOf(tok::comma, tok::l_brace, tok::kw_try)) {
1931 // This declaration isn't over yet. Keep skipping.
1932 continue;
1933 }
1934 TryConsumeToken(tok::semi);
1935 return;
1936
1937 case tok::l_square:
1938 ConsumeBracket();
1939 SkipUntil(tok::r_square);
1940 continue;
1941
1942 case tok::l_paren:
1943 ConsumeParen();
1944 SkipUntil(tok::r_paren);
1945 continue;
1946
1947 case tok::r_brace:
1948 return;
1949
1950 case tok::semi:
1951 ConsumeToken();
1952 return;
1953
1954 case tok::kw_inline:
1955 // 'inline namespace' at the start of a line is almost certainly
1956 // a good place to pick back up parsing, except in an Objective-C
1957 // @interface context.
1958 if (Tok.isAtStartOfLine() && NextToken().is(tok::kw_namespace) &&
1959 (!ParsingInObjCContainer || CurParsedObjCImpl))
1960 return;
1961 break;
1962
1963 case tok::kw_namespace:
1964 // 'namespace' at the start of a line is almost certainly a good
1965 // place to pick back up parsing, except in an Objective-C
1966 // @interface context.
1967 if (Tok.isAtStartOfLine() &&
1968 (!ParsingInObjCContainer || CurParsedObjCImpl))
1969 return;
1970 break;
1971
1972 case tok::at:
1973 // @end is very much like } in Objective-C contexts.
1974 if (NextToken().isObjCAtKeyword(tok::objc_end) &&
1975 ParsingInObjCContainer)
1976 return;
1977 break;
1978
1979 case tok::minus:
1980 case tok::plus:
1981 // - and + probably start new method declarations in Objective-C contexts.
1982 if (Tok.isAtStartOfLine() && ParsingInObjCContainer)
1983 return;
1984 break;
1985
1986 case tok::eof:
1987 case tok::annot_module_begin:
1988 case tok::annot_module_end:
1989 case tok::annot_module_include:
1990 return;
1991
1992 default:
1993 break;
1994 }
1995
1996 ConsumeAnyToken();
1997 }
1998 }
1999
2000 /// ParseDeclGroup - Having concluded that this is either a function
2001 /// definition or a group of object declarations, actually parse the
2002 /// result.
2003 Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS,
2004 DeclaratorContext Context,
2005 SourceLocation *DeclEnd,
2006 ForRangeInit *FRI) {
2007 // Parse the first declarator.
2008 ParsingDeclarator D(*this, DS, Context);
2009 ParseDeclarator(D);
2010
2011 // Bail out if the first declarator didn't seem well-formed.
2012 if (!D.hasName() && !D.mayOmitIdentifier()) {
2013 SkipMalformedDecl();
2014 return nullptr;
2015 }
2016
2017 if (Tok.is(tok::kw_requires))
2018 ParseTrailingRequiresClause(D);
2019
2020 // Save late-parsed attributes for now; they need to be parsed in the
2021 // appropriate function scope after the function Decl has been constructed.
2022 // These will be parsed in ParseFunctionDefinition or ParseLexedAttrList.
2023 LateParsedAttrList LateParsedAttrs(true);
2024 if (D.isFunctionDeclarator()) {
2025 MaybeParseGNUAttributes(D, &LateParsedAttrs);
2026
2027 // The _Noreturn keyword can't appear here, unlike the GNU noreturn
2028 // attribute. If we find the keyword here, tell the user to put it
2029 // at the start instead.
2030 if (Tok.is(tok::kw__Noreturn)) {
2031 SourceLocation Loc = ConsumeToken();
2032 const char *PrevSpec;
2033 unsigned DiagID;
2034
2035 // We can offer a fixit if it's valid to mark this function as _Noreturn
2036 // and we don't have any other declarators in this declaration.
2037 bool Fixit = !DS.setFunctionSpecNoreturn(Loc, PrevSpec, DiagID);
2038 MaybeParseGNUAttributes(D, &LateParsedAttrs);
2039 Fixit &= Tok.isOneOf(tok::semi, tok::l_brace, tok::kw_try);
2040
2041 Diag(Loc, diag::err_c11_noreturn_misplaced)
2042 << (Fixit ? FixItHint::CreateRemoval(Loc) : FixItHint())
2043 << (Fixit ? FixItHint::CreateInsertion(D.getBeginLoc(), "_Noreturn ")
2044 : FixItHint());
2045 }
2046 }
2047
2048 // Check to see if we have a function *definition* which must have a body.
2049 if (D.isFunctionDeclarator() &&
2050 // Look at the next token to make sure that this isn't a function
2051 // declaration. We have to check this because __attribute__ might be the
2052 // start of a function definition in GCC-extended K&R C.
2053 !isDeclarationAfterDeclarator()) {
2054
2055 // Function definitions are only allowed at file scope and in C++ classes.
2056 // The C++ inline method definition case is handled elsewhere, so we only
2057 // need to handle the file scope definition case.
2058 if (Context == DeclaratorContext::FileContext) {
2059 if (isStartOfFunctionDefinition(D)) {
2060 if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
2061 Diag(Tok, diag::err_function_declared_typedef);
2062
2063 // Recover by treating the 'typedef' as spurious.
2064 DS.ClearStorageClassSpecs();
2065 }
2066
2067 Decl *TheDecl =
2068 ParseFunctionDefinition(D, ParsedTemplateInfo(), &LateParsedAttrs);
2069 return Actions.ConvertDeclToDeclGroup(TheDecl);
2070 }
2071
2072 if (isDeclarationSpecifier()) {
2073 // If there is an invalid declaration specifier right after the
2074 // function prototype, then we must be in a missing semicolon case
2075 // where this isn't actually a body. Just fall through into the code
2076 // that handles it as a prototype, and let the top-level code handle
2077 // the erroneous declspec where it would otherwise expect a comma or
2078 // semicolon.
2079 } else {
2080 Diag(Tok, diag::err_expected_fn_body);
2081 SkipUntil(tok::semi);
2082 return nullptr;
2083 }
2084 } else {
2085 if (Tok.is(tok::l_brace)) {
2086 Diag(Tok, diag::err_function_definition_not_allowed);
2087 SkipMalformedDecl();
2088 return nullptr;
2089 }
2090 }
2091 }
2092
2093 if (ParseAsmAttributesAfterDeclarator(D))
2094 return nullptr;
2095
2096 // C++0x [stmt.iter]p1: Check if we have a for-range-declarator. If so, we
2097 // must parse and analyze the for-range-initializer before the declaration is
2098 // analyzed.
2099 //
2100 // Handle the Objective-C for-in loop variable similarly, although we
2101 // don't need to parse the container in advance.
2102 if (FRI && (Tok.is(tok::colon) || isTokIdentifier_in())) {
2103 bool IsForRangeLoop = false;
2104 if (TryConsumeToken(tok::colon, FRI->ColonLoc)) {
2105 IsForRangeLoop = true;
2106 if (getLangOpts().OpenMP)
2107 Actions.startOpenMPCXXRangeFor();
2108 if (Tok.is(tok::l_brace))
2109 FRI->RangeExpr = ParseBraceInitializer();
2110 else
2111 FRI->RangeExpr = ParseExpression();
2112 }
2113
2114 Decl *ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
2115 if (IsForRangeLoop) {
2116 Actions.ActOnCXXForRangeDecl(ThisDecl);
2117 } else {
2118 // Obj-C for loop
2119 if (auto *VD = dyn_cast_or_null<VarDecl>(ThisDecl))
2120 VD->setObjCForDecl(true);
2121 }
2122 Actions.FinalizeDeclaration(ThisDecl);
2123 D.complete(ThisDecl);
2124 return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, ThisDecl);
2125 }
2126
2127 SmallVector<Decl *, 8> DeclsInGroup;
2128 Decl *FirstDecl = ParseDeclarationAfterDeclaratorAndAttributes(
2129 D, ParsedTemplateInfo(), FRI);
2130 if (LateParsedAttrs.size() > 0)
2131 ParseLexedAttributeList(LateParsedAttrs, FirstDecl, true, false);
2132 D.complete(FirstDecl);
2133 if (FirstDecl)
2134 DeclsInGroup.push_back(FirstDecl);
2135
2136 bool ExpectSemi = Context != DeclaratorContext::ForContext;
2137
2138 // If we don't have a comma, it is either the end of the list (a ';') or an
2139 // error, bail out.
2140 SourceLocation CommaLoc;
2141 while (TryConsumeToken(tok::comma, CommaLoc)) {
2142 if (Tok.isAtStartOfLine() && ExpectSemi && !MightBeDeclarator(Context)) {
2143 // This comma was followed by a line-break and something which can't be
2144 // the start of a declarator. The comma was probably a typo for a
2145 // semicolon.
2146 Diag(CommaLoc, diag::err_expected_semi_declaration)
2147 << FixItHint::CreateReplacement(CommaLoc, ";");
2148 ExpectSemi = false;
2149 break;
2150 }
2151
2152 // Parse the next declarator.
2153 D.clear();
2154 D.setCommaLoc(CommaLoc);
2155
2156 // Accept attributes in an init-declarator. In the first declarator in a
2157 // declaration, these would be part of the declspec. In subsequent
2158 // declarators, they become part of the declarator itself, so that they
2159 // don't apply to declarators after *this* one. Examples:
2160 // short __attribute__((common)) var; -> declspec
2161 // short var __attribute__((common)); -> declarator
2162 // short x, __attribute__((common)) var; -> declarator
2163 MaybeParseGNUAttributes(D);
2164
2165 // MSVC parses but ignores qualifiers after the comma as an extension.
2166 if (getLangOpts().MicrosoftExt)
2167 DiagnoseAndSkipExtendedMicrosoftTypeAttributes();
2168
2169 ParseDeclarator(D);
2170 if (!D.isInvalidType()) {
2171 // C++2a [dcl.decl]p1
2172 // init-declarator:
2173 // declarator initializer[opt]
2174 // declarator requires-clause
2175 if (Tok.is(tok::kw_requires))
2176 ParseTrailingRequiresClause(D);
2177 Decl *ThisDecl = ParseDeclarationAfterDeclarator(D);
2178 D.complete(ThisDecl);
2179 if (ThisDecl)
2180 DeclsInGroup.push_back(ThisDecl);
2181 }
2182 }
2183
2184 if (DeclEnd)
2185 *DeclEnd = Tok.getLocation();
2186
2187 if (ExpectSemi &&
2188 ExpectAndConsumeSemi(Context == DeclaratorContext::FileContext
2189 ? diag::err_invalid_token_after_toplevel_declarator
2190 : diag::err_expected_semi_declaration)) {
2191 // Okay, there was no semicolon and one was expected. If we see a
2192 // declaration specifier, just assume it was missing and continue parsing.
2193 // Otherwise things are very confused and we skip to recover.
2194 if (!isDeclarationSpecifier()) {
2195 SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
2196 TryConsumeToken(tok::semi);
2197 }
2198 }
2199
2200 return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, DeclsInGroup);
2201 }
2202
2203 /// Parse an optional simple-asm-expr and attributes, and attach them to a
2204 /// declarator. Returns true on an error.
2205 bool Parser::ParseAsmAttributesAfterDeclarator(Declarator &D) {
2206 // If a simple-asm-expr is present, parse it.
2207 if (Tok.is(tok::kw_asm)) {
2208 SourceLocation Loc;
2209 ExprResult AsmLabel(ParseSimpleAsm(/*ForAsmLabel*/ true, &Loc));
2210 if (AsmLabel.isInvalid()) {
2211 SkipUntil(tok::semi, StopBeforeMatch);
2212 return true;
2213 }
2214
2215 D.setAsmLabel(AsmLabel.get());
2216 D.SetRangeEnd(Loc);
2217 }
2218
2219 MaybeParseGNUAttributes(D);
2220 return false;
2221 }
2222
2223 /// Parse 'declaration' after parsing 'declaration-specifiers
2224 /// declarator'. This method parses the remainder of the declaration
2225 /// (including any attributes or initializer, among other things) and
2226 /// finalizes the declaration.
2227 ///
2228 /// init-declarator: [C99 6.7]
2229 /// declarator
2230 /// declarator '=' initializer
2231 /// [GNU] declarator simple-asm-expr[opt] attributes[opt]
2232 /// [GNU] declarator simple-asm-expr[opt] attributes[opt] '=' initializer
2233 /// [C++] declarator initializer[opt]
2234 ///
2235 /// [C++] initializer:
2236 /// [C++] '=' initializer-clause
2237 /// [C++] '(' expression-list ')'
2238 /// [C++0x] '=' 'default' [TODO]
2239 /// [C++0x] '=' 'delete'
2240 /// [C++0x] braced-init-list
2241 ///
2242 /// According to the standard grammar, =default and =delete are function
2243 /// definitions, but that definitely doesn't fit with the parser here.
2244 ///
2245 Decl *Parser::ParseDeclarationAfterDeclarator(
2246 Declarator &D, const ParsedTemplateInfo &TemplateInfo) {
2247 if (ParseAsmAttributesAfterDeclarator(D))
2248 return nullptr;
2249
2250 return ParseDeclarationAfterDeclaratorAndAttributes(D, TemplateInfo);
2251 }
2252
2253 Decl *Parser::ParseDeclarationAfterDeclaratorAndAttributes(
2254 Declarator &D, const ParsedTemplateInfo &TemplateInfo, ForRangeInit *FRI) {
2255 // RAII type used to track whether we're inside an initializer.
2256 struct InitializerScopeRAII {
2257 Parser &P;
2258 Declarator &D;
2259 Decl *ThisDecl;
2260
2261 InitializerScopeRAII(Parser &P, Declarator &D, Decl *ThisDecl)
2262 : P(P), D(D), ThisDecl(ThisDecl) {
2263 if (ThisDecl && P.getLangOpts().CPlusPlus) {
2264 Scope *S = nullptr;
2265 if (D.getCXXScopeSpec().isSet()) {
2266 P.EnterScope(0);
2267 S = P.getCurScope();
2268 }
2269 P.Actions.ActOnCXXEnterDeclInitializer(S, ThisDecl);
2270 }
2271 }
2272 ~InitializerScopeRAII() { pop(); }
2273 void pop() {
2274 if (ThisDecl && P.getLangOpts().CPlusPlus) {
2275 Scope *S = nullptr;
2276 if (D.getCXXScopeSpec().isSet())
2277 S = P.getCurScope();
2278 P.Actions.ActOnCXXExitDeclInitializer(S, ThisDecl);
2279 if (S)
2280 P.ExitScope();
2281 }
2282 ThisDecl = nullptr;
2283 }
2284 };
2285
2286 // Inform the current actions module that we just parsed this declarator.
2287 Decl *ThisDecl = nullptr;
2288 switch (TemplateInfo.Kind) {
2289 case ParsedTemplateInfo::NonTemplate:
2290 ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
2291 break;
2292
2293 case ParsedTemplateInfo::Template:
2294 case ParsedTemplateInfo::ExplicitSpecialization: {
2295 ThisDecl = Actions.ActOnTemplateDeclarator(getCurScope(),
2296 *TemplateInfo.TemplateParams,
2297 D);
2298 if (VarTemplateDecl *VT = dyn_cast_or_null<VarTemplateDecl>(ThisDecl))
2299 // Re-direct this decl to refer to the templated decl so that we can
2300 // initialize it.
2301 ThisDecl = VT->getTemplatedDecl();
2302 break;
2303 }
2304 case ParsedTemplateInfo::ExplicitInstantiation: {
2305 if (Tok.is(tok::semi)) {
2306 DeclResult ThisRes = Actions.ActOnExplicitInstantiation(
2307 getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc, D);
2308 if (ThisRes.isInvalid()) {
2309 SkipUntil(tok::semi, StopBeforeMatch);
2310 return nullptr;
2311 }
2312 ThisDecl = ThisRes.get();
2313 } else {
2314 // FIXME: This check should be for a variable template instantiation only.
2315
2316 // Check that this is a valid instantiation
2317 if (D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) {
2318 // If the declarator-id is not a template-id, issue a diagnostic and
2319 // recover by ignoring the 'template' keyword.
2320 Diag(Tok, diag::err_template_defn_explicit_instantiation)
2321 << 2 << FixItHint::CreateRemoval(TemplateInfo.TemplateLoc);
2322 ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
2323 } else {
2324 SourceLocation LAngleLoc =
2325 PP.getLocForEndOfToken(TemplateInfo.TemplateLoc);
2326 Diag(D.getIdentifierLoc(),
2327 diag::err_explicit_instantiation_with_definition)
2328 << SourceRange(TemplateInfo.TemplateLoc)
2329 << FixItHint::CreateInsertion(LAngleLoc, "<>");
2330
2331 // Recover as if it were an explicit specialization.
2332 TemplateParameterLists FakedParamLists;
2333 FakedParamLists.push_back(Actions.ActOnTemplateParameterList(
2334 0, SourceLocation(), TemplateInfo.TemplateLoc, LAngleLoc, None,
2335 LAngleLoc, nullptr));
2336
2337 ThisDecl =
2338 Actions.ActOnTemplateDeclarator(getCurScope(), FakedParamLists, D);
2339 }
2340 }
2341 break;
2342 }
2343 }
2344
2345 // Parse declarator '=' initializer.
2346 // If a '==' or '+=' is found, suggest a fixit to '='.
2347 if (isTokenEqualOrEqualTypo()) {
2348 SourceLocation EqualLoc = ConsumeToken();
2349
2350 if (Tok.is(tok::kw_delete)) {
2351 if (D.isFunctionDeclarator())
2352 Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
2353 << 1 /* delete */;
2354 else
2355 Diag(ConsumeToken(), diag::err_deleted_non_function);
2356 } else if (Tok.is(tok::kw_default)) {
2357 if (D.isFunctionDeclarator())
2358 Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
2359 << 0 /* default */;
2360 else
2361 Diag(ConsumeToken(), diag::err_default_special_members)
2362 << getLangOpts().CPlusPlus2a;
2363 } else {
2364 InitializerScopeRAII InitScope(*this, D, ThisDecl);
2365
2366 if (Tok.is(tok::code_completion)) {
2367 Actions.CodeCompleteInitializer(getCurScope(), ThisDecl);
2368 Actions.FinalizeDeclaration(ThisDecl);
2369 cutOffParsing();
2370 return nullptr;
2371 }
2372
2373 PreferredType.enterVariableInit(Tok.getLocation(), ThisDecl);
2374 ExprResult Init = ParseInitializer();
2375
2376 // If this is the only decl in (possibly) range based for statement,
2377 // our best guess is that the user meant ':' instead of '='.
2378 if (Tok.is(tok::r_paren) && FRI && D.isFirstDeclarator()) {
2379 Diag(EqualLoc, diag::err_single_decl_assign_in_for_range)
2380 << FixItHint::CreateReplacement(EqualLoc, ":");
2381 // We are trying to stop parser from looking for ';' in this for
2382 // statement, therefore preventing spurious errors to be issued.
2383 FRI->ColonLoc = EqualLoc;
2384 Init = ExprError();
2385 FRI->RangeExpr = Init;
2386 }
2387
2388 InitScope.pop();
2389
2390 if (Init.isInvalid()) {
2391 SmallVector<tok::TokenKind, 2> StopTokens;
2392 StopTokens.push_back(tok::comma);
2393 if (D.getContext() == DeclaratorContext::ForContext ||
2394 D.getContext() == DeclaratorContext::InitStmtContext)
2395 StopTokens.push_back(tok::r_paren);
2396 SkipUntil(StopTokens, StopAtSemi | StopBeforeMatch);
2397 Actions.ActOnInitializerError(ThisDecl);
2398 } else
2399 Actions.AddInitializerToDecl(ThisDecl, Init.get(),
2400 /*DirectInit=*/false);
2401 }
2402 } else if (Tok.is(tok::l_paren)) {
2403 // Parse C++ direct initializer: '(' expression-list ')'
2404 BalancedDelimiterTracker T(*this, tok::l_paren);
2405 T.consumeOpen();
2406
2407 ExprVector Exprs;
2408 CommaLocsTy CommaLocs;
2409
2410 InitializerScopeRAII InitScope(*this, D, ThisDecl);
2411
2412 auto ThisVarDecl = dyn_cast_or_null<VarDecl>(ThisDecl);
2413 auto RunSignatureHelp = [&]() {
2414 QualType PreferredType = Actions.ProduceConstructorSignatureHelp(
2415 getCurScope(), ThisVarDecl->getType()->getCanonicalTypeInternal(),
2416 ThisDecl->getLocation(), Exprs, T.getOpenLocation());
2417 CalledSignatureHelp = true;
2418 return PreferredType;
2419 };
2420 auto SetPreferredType = [&] {
2421 PreferredType.enterFunctionArgument(Tok.getLocation(), RunSignatureHelp);
2422 };
2423
2424 llvm::function_ref<void()> ExpressionStarts;
2425 if (ThisVarDecl) {
2426 // ParseExpressionList can sometimes succeed even when ThisDecl is not
2427 // VarDecl. This is an error and it is reported in a call to
2428 // Actions.ActOnInitializerError(). However, we call
2429 // ProduceConstructorSignatureHelp only on VarDecls.
2430 ExpressionStarts = SetPreferredType;
2431 }
2432 if (ParseExpressionList(Exprs, CommaLocs, ExpressionStarts)) {
2433 if (ThisVarDecl && PP.isCodeCompletionReached() && !CalledSignatureHelp) {
2434 Actions.ProduceConstructorSignatureHelp(
2435 getCurScope(), ThisVarDecl->getType()->getCanonicalTypeInternal(),
2436 ThisDecl->getLocation(), Exprs, T.getOpenLocation());
2437 CalledSignatureHelp = true;
2438 }
2439 Actions.ActOnInitializerError(ThisDecl);
2440 SkipUntil(tok::r_paren, StopAtSemi);
2441 } else {
2442 // Match the ')'.
2443 T.consumeClose();
2444
2445 assert(!Exprs.empty() && Exprs.size()-1 == CommaLocs.size() &&
2446 "Unexpected number of commas!");
2447
2448 InitScope.pop();
2449
2450 ExprResult Initializer = Actions.ActOnParenListExpr(T.getOpenLocation(),
2451 T.getCloseLocation(),
2452 Exprs);
2453 Actions.AddInitializerToDecl(ThisDecl, Initializer.get(),
2454 /*DirectInit=*/true);
2455 }
2456 } else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace) &&
2457 (!CurParsedObjCImpl || !D.isFunctionDeclarator())) {
2458 // Parse C++0x braced-init-list.
2459 Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
2460
2461 InitializerScopeRAII InitScope(*this, D, ThisDecl);
2462
2463 ExprResult Init(ParseBraceInitializer());
2464
2465 InitScope.pop();
2466
2467 if (Init.isInvalid()) {
2468 Actions.ActOnInitializerError(ThisDecl);
2469 } else
2470 Actions.AddInitializerToDecl(ThisDecl, Init.get(), /*DirectInit=*/true);
2471
2472 } else {
2473 Actions.ActOnUninitializedDecl(ThisDecl);
2474 }
2475
2476 Actions.FinalizeDeclaration(ThisDecl);
2477
2478 return ThisDecl;
2479 }
2480
2481 /// ParseSpecifierQualifierList
2482 /// specifier-qualifier-list:
2483 /// type-specifier specifier-qualifier-list[opt]
2484 /// type-qualifier specifier-qualifier-list[opt]
2485 /// [GNU] attributes specifier-qualifier-list[opt]
2486 ///
2487 void Parser::ParseSpecifierQualifierList(DeclSpec &DS, AccessSpecifier AS,
2488 DeclSpecContext DSC) {
2489 /// specifier-qualifier-list is a subset of declaration-specifiers. Just
2490 /// parse declaration-specifiers and complain about extra stuff.
2491 /// TODO: diagnose attribute-specifiers and alignment-specifiers.
2492 ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC);
2493
2494 // Validate declspec for type-name.
2495 unsigned Specs = DS.getParsedSpecifiers();
2496 if (isTypeSpecifier(DSC) && !DS.hasTypeSpecifier()) {
2497 Diag(Tok, diag::err_expected_type);
2498 DS.SetTypeSpecError();
2499 } else if (Specs == DeclSpec::PQ_None && !DS.hasAttributes()) {
2500 Diag(Tok, diag::err_typename_requires_specqual);
2501 if (!DS.hasTypeSpecifier())
2502 DS.SetTypeSpecError();
2503 }
2504
2505 // Issue diagnostic and remove storage class if present.
2506 if (Specs & DeclSpec::PQ_StorageClassSpecifier) {
2507 if (DS.getStorageClassSpecLoc().isValid())
2508 Diag(DS.getStorageClassSpecLoc(),diag::err_typename_invalid_storageclass);
2509 else
2510 Diag(DS.getThreadStorageClassSpecLoc(),
2511 diag::err_typename_invalid_storageclass);
2512 DS.ClearStorageClassSpecs();
2513 }
2514
2515 // Issue diagnostic and remove function specifier if present.
2516 if (Specs & DeclSpec::PQ_FunctionSpecifier) {
2517 if (DS.isInlineSpecified())
2518 Diag(DS.getInlineSpecLoc(), diag::err_typename_invalid_functionspec);
2519 if (DS.isVirtualSpecified())
2520 Diag(DS.getVirtualSpecLoc(), diag::err_typename_invalid_functionspec);
2521 if (DS.hasExplicitSpecifier())
2522 Diag(DS.getExplicitSpecLoc(), diag::err_typename_invalid_functionspec);
2523 DS.ClearFunctionSpecs();
2524 }
2525
2526 // Issue diagnostic and remove constexpr specifier if present.
2527 if (DS.hasConstexprSpecifier() && DSC != DeclSpecContext::DSC_condition) {
2528 Diag(DS.getConstexprSpecLoc(), diag::err_typename_invalid_constexpr)
2529 << DS.getConstexprSpecifier();
2530 DS.ClearConstexprSpec();
2531 }
2532 }
2533
2534 /// isValidAfterIdentifierInDeclaratorAfterDeclSpec - Return true if the
2535 /// specified token is valid after the identifier in a declarator which
2536 /// immediately follows the declspec. For example, these things are valid:
2537 ///
2538 /// int x [ 4]; // direct-declarator
2539 /// int x ( int y); // direct-declarator
2540 /// int(int x ) // direct-declarator
2541 /// int x ; // simple-declaration
2542 /// int x = 17; // init-declarator-list
2543 /// int x , y; // init-declarator-list
2544 /// int x __asm__ ("foo"); // init-declarator-list
2545 /// int x : 4; // struct-declarator
2546 /// int x { 5}; // C++'0x unified initializers
2547 ///
2548 /// This is not, because 'x' does not immediately follow the declspec (though
2549 /// ')' happens to be valid anyway).
2550 /// int (x)
2551 ///
2552 static bool isValidAfterIdentifierInDeclarator(const Token &T) {
2553 return T.isOneOf(tok::l_square, tok::l_paren, tok::r_paren, tok::semi,
2554 tok::comma, tok::equal, tok::kw_asm, tok::l_brace,
2555 tok::colon);
2556 }
2557
2558 /// ParseImplicitInt - This method is called when we have an non-typename
2559 /// identifier in a declspec (which normally terminates the decl spec) when
2560 /// the declspec has no type specifier. In this case, the declspec is either
2561 /// malformed or is "implicit int" (in K&R and C89).
2562 ///
2563 /// This method handles diagnosing this prettily and returns false if the
2564 /// declspec is done being processed. If it recovers and thinks there may be
2565 /// other pieces of declspec after it, it returns true.
2566 ///
2567 bool Parser::ParseImplicitInt(DeclSpec &DS, CXXScopeSpec *SS,
2568 const ParsedTemplateInfo &TemplateInfo,
2569 AccessSpecifier AS, DeclSpecContext DSC,
2570 ParsedAttributesWithRange &Attrs) {
2571 assert(Tok.is(tok::identifier) && "should have identifier");
2572
2573 SourceLocation Loc = Tok.getLocation();
2574 // If we see an identifier that is not a type name, we normally would
2575 // parse it as the identifier being declared. However, when a typename
2576 // is typo'd or the definition is not included, this will incorrectly
2577 // parse the typename as the identifier name and fall over misparsing
2578 // later parts of the diagnostic.
2579 //
2580 // As such, we try to do some look-ahead in cases where this would
2581 // otherwise be an "implicit-int" case to see if this is invalid. For
2582 // example: "static foo_t x = 4;" In this case, if we parsed foo_t as
2583 // an identifier with implicit int, we'd get a parse error because the
2584 // next token is obviously invalid for a type. Parse these as a case
2585 // with an invalid type specifier.
2586 assert(!DS.hasTypeSpecifier() && "Type specifier checked above");
2587
2588 // Since we know that this either implicit int (which is rare) or an
2589 // error, do lookahead to try to do better recovery. This never applies
2590 // within a type specifier. Outside of C++, we allow this even if the
2591 // language doesn't "officially" support implicit int -- we support
2592 // implicit int as an extension in C99 and C11.
2593 if (!isTypeSpecifier(DSC) && !getLangOpts().CPlusPlus &&
2594 isValidAfterIdentifierInDeclarator(NextToken())) {
2595 // If this token is valid for implicit int, e.g. "static x = 4", then
2596 // we just avoid eating the identifier, so it will be parsed as the
2597 // identifier in the declarator.
2598 return false;
2599 }
2600
2601 // Early exit as Sema has a dedicated missing_actual_pipe_type diagnostic
2602 // for incomplete declarations such as `pipe p`.
2603 if (getLangOpts().OpenCLCPlusPlus && DS.isTypeSpecPipe())
2604 return false;
2605
2606 if (getLangOpts().CPlusPlus &&
2607 DS.getStorageClassSpec() == DeclSpec::SCS_auto) {
2608 // Don't require a type specifier if we have the 'auto' storage class
2609 // specifier in C++98 -- we'll promote it to a type specifier.
2610 if (SS)
2611 AnnotateScopeToken(*SS, /*IsNewAnnotation*/false);
2612 return false;
2613 }
2614
2615 if (getLangOpts().CPlusPlus && (!SS || SS->isEmpty()) &&
2616 getLangOpts().MSVCCompat) {
2617 // Lookup of an unqualified type name has failed in MSVC compatibility mode.
2618 // Give Sema a chance to recover if we are in a template with dependent base
2619 // classes.
2620 if (ParsedType T = Actions.ActOnMSVCUnknownTypeName(
2621 *Tok.getIdentifierInfo(), Tok.getLocation(),
2622 DSC == DeclSpecContext::DSC_template_type_arg)) {
2623 const char *PrevSpec;
2624 unsigned DiagID;
2625 DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, DiagID, T,
2626 Actions.getASTContext().getPrintingPolicy());
2627 DS.SetRangeEnd(Tok.getLocation());
2628 ConsumeToken();
2629 return false;
2630 }
2631 }
2632
2633 // Otherwise, if we don't consume this token, we are going to emit an
2634 // error anyway. Try to recover from various common problems. Check
2635 // to see if this was a reference to a tag name without a tag specified.
2636 // This is a common problem in C (saying 'foo' instead of 'struct foo').
2637 //
2638 // C++ doesn't need this, and isTagName doesn't take SS.
2639 if (SS == nullptr) {
2640 const char *TagName = nullptr, *FixitTagName = nullptr;
2641 tok::TokenKind TagKind = tok::unknown;
2642
2643 switch (Actions.isTagName(*Tok.getIdentifierInfo(), getCurScope())) {
2644 default: break;
2645 case DeclSpec::TST_enum:
2646 TagName="enum" ; FixitTagName = "enum " ; TagKind=tok::kw_enum ;break;
2647 case DeclSpec::TST_union:
2648 TagName="union" ; FixitTagName = "union " ;TagKind=tok::kw_union ;break;
2649 case DeclSpec::TST_struct:
2650 TagName="struct"; FixitTagName = "struct ";TagKind=tok::kw_struct;break;
2651 case DeclSpec::TST_interface:
2652 TagName="__interface"; FixitTagName = "__interface ";
2653 TagKind=tok::kw___interface;break;
2654 case DeclSpec::TST_class:
2655 TagName="class" ; FixitTagName = "class " ;TagKind=tok::kw_class ;break;
2656 }
2657
2658 if (TagName) {
2659 IdentifierInfo *TokenName = Tok.getIdentifierInfo();
2660 LookupResult R(Actions, TokenName, SourceLocation(),
2661 Sema::LookupOrdinaryName);
2662
2663 Diag(Loc, diag::err_use_of_tag_name_without_tag)
2664 << TokenName << TagName << getLangOpts().CPlusPlus
2665 << FixItHint::CreateInsertion(Tok.getLocation(), FixitTagName);
2666
2667 if (Actions.LookupParsedName(R, getCurScope(), SS)) {
2668 for (LookupResult::iterator I = R.begin(), IEnd = R.end();
2669 I != IEnd; ++I)
2670 Diag((*I)->getLocation(), diag::note_decl_hiding_tag_type)
2671 << TokenName << TagName;
2672 }
2673
2674 // Parse this as a tag as if the missing tag were present.
2675 if (TagKind == tok::kw_enum)
2676 ParseEnumSpecifier(Loc, DS, TemplateInfo, AS,
2677 DeclSpecContext::DSC_normal);
2678 else
2679 ParseClassSpecifier(TagKind, Loc, DS, TemplateInfo, AS,
2680 /*EnteringContext*/ false,
2681 DeclSpecContext::DSC_normal, Attrs);
2682 return true;
2683 }
2684 }
2685
2686 // Determine whether this identifier could plausibly be the name of something
2687 // being declared (with a missing type).
2688 if (!isTypeSpecifier(DSC) && (!SS || DSC == DeclSpecContext::DSC_top_level ||
2689 DSC == DeclSpecContext::DSC_class)) {
2690 // Look ahead to the next token to try to figure out what this declaration
2691 // was supposed to be.
2692 switch (NextToken().getKind()) {
2693 case tok::l_paren: {
2694 // static x(4); // 'x' is not a type
2695 // x(int n); // 'x' is not a type
2696 // x (*p)[]; // 'x' is a type
2697 //
2698 // Since we're in an error case, we can afford to perform a tentative
2699 // parse to determine which case we're in.
2700 TentativeParsingAction PA(*this);
2701 ConsumeToken();
2702 TPResult TPR = TryParseDeclarator(/*mayBeAbstract*/false);
2703 PA.Revert();
2704
2705 if (TPR != TPResult::False) {
2706 // The identifier is followed by a parenthesized declarator.
2707 // It's supposed to be a type.
2708 break;
2709 }
2710
2711 // If we're in a context where we could be declaring a constructor,
2712 // check whether this is a constructor declaration with a bogus name.
2713 if (DSC == DeclSpecContext::DSC_class ||
2714 (DSC == DeclSpecContext::DSC_top_level && SS)) {
2715 IdentifierInfo *II = Tok.getIdentifierInfo();
2716 if (Actions.isCurrentClassNameTypo(II, SS)) {
2717 Diag(Loc, diag::err_constructor_bad_name)
2718 << Tok.getIdentifierInfo() << II
2719 << FixItHint::CreateReplacement(Tok.getLocation(), II->getName());
2720 Tok.setIdentifierInfo(II);
2721 }
2722 }
2723 // Fall through.
2724 LLVM_FALLTHROUGH;
2725 }
2726 case tok::comma:
2727 case tok::equal:
2728 case tok::kw_asm:
2729 case tok::l_brace:
2730 case tok::l_square:
2731 case tok::semi:
2732 // This looks like a variable or function declaration. The type is
2733 // probably missing. We're done parsing decl-specifiers.
2734 // But only if we are not in a function prototype scope.
2735 if (getCurScope()->isFunctionPrototypeScope())
2736 break;
2737 if (SS)
2738 AnnotateScopeToken(*SS, /*IsNewAnnotation*/false);
2739 return false;
2740
2741 default:
2742 // This is probably supposed to be a type. This includes cases like:
2743 // int f(itn);
2744 // struct S { unsinged : 4; };
2745 break;
2746 }
2747 }
2748
2749 // This is almost certainly an invalid type name. Let Sema emit a diagnostic
2750 // and attempt to recover.
2751 ParsedType T;
2752 IdentifierInfo *II = Tok.getIdentifierInfo();
2753 bool IsTemplateName = getLangOpts().CPlusPlus && NextToken().is(tok::less);
2754 Actions.DiagnoseUnknownTypeName(II, Loc, getCurScope(), SS, T,
2755 IsTemplateName);
2756 if (T) {
2757 // The action has suggested that the type T could be used. Set that as
2758 // the type in the declaration specifiers, consume the would-be type
2759 // name token, and we're done.
2760 const char *PrevSpec;
2761 unsigned DiagID;
2762 DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, DiagID, T,
2763 Actions.getASTContext().getPrintingPolicy());
2764 DS.SetRangeEnd(Tok.getLocation());
2765 ConsumeToken();
2766 // There may be other declaration specifiers after this.
2767 return true;
2768 } else if (II != Tok.getIdentifierInfo()) {
2769 // If no type was suggested, the correction is to a keyword
2770 Tok.setKind(II->getTokenID());
2771 // There may be other declaration specifiers after this.
2772 return true;
2773 }
2774
2775 // Otherwise, the action had no suggestion for us. Mark this as an error.
2776 DS.SetTypeSpecError();
2777 DS.SetRangeEnd(Tok.getLocation());
2778 ConsumeToken();
2779
2780 // Eat any following template arguments.
2781 if (IsTemplateName) {
2782 SourceLocation LAngle, RAngle;
2783 TemplateArgList Args;
2784 ParseTemplateIdAfterTemplateName(true, LAngle, Args, RAngle);
2785 }
2786
2787 // TODO: Could inject an invalid typedef decl in an enclosing scope to
2788 // avoid rippling error messages on subsequent uses of the same type,
2789 // could be useful if #include was forgotten.
2790 return true;
2791 }
2792
2793 /// Determine the declaration specifier context from the declarator
2794 /// context.
2795 ///
2796 /// \param Context the declarator context, which is one of the
2797 /// DeclaratorContext enumerator values.
2798 Parser::DeclSpecContext
2799 Parser::getDeclSpecContextFromDeclaratorContext(DeclaratorContext Context) {
2800 if (Context == DeclaratorContext::MemberContext)
2801 return DeclSpecContext::DSC_class;
2802 if (Context == DeclaratorContext::FileContext)
2803 return DeclSpecContext::DSC_top_level;
2804 if (Context == DeclaratorContext::TemplateParamContext)
2805 return DeclSpecContext::DSC_template_param;
2806 if (Context == DeclaratorContext::TemplateArgContext ||
2807 Context == DeclaratorContext::TemplateTypeArgContext)
2808 return DeclSpecContext::DSC_template_type_arg;
2809 if (Context == DeclaratorContext::TrailingReturnContext ||
2810 Context == DeclaratorContext::TrailingReturnVarContext)
2811 return DeclSpecContext::DSC_trailing;
2812 if (Context == DeclaratorContext::AliasDeclContext ||
2813 Context == DeclaratorContext::AliasTemplateContext)
2814 return DeclSpecContext::DSC_alias_declaration;
2815 return DeclSpecContext::DSC_normal;
2816 }
2817
2818 /// ParseAlignArgument - Parse the argument to an alignment-specifier.
2819 ///
2820 /// FIXME: Simply returns an alignof() expression if the argument is a
2821 /// type. Ideally, the type should be propagated directly into Sema.
2822 ///
2823 /// [C11] type-id
2824 /// [C11] constant-expression
2825 /// [C++0x] type-id ...[opt]
2826 /// [C++0x] assignment-expression ...[opt]
2827 ExprResult Parser::ParseAlignArgument(SourceLocation Start,
2828 SourceLocation &EllipsisLoc) {
2829 ExprResult ER;
2830 if (isTypeIdInParens()) {
2831 SourceLocation TypeLoc = Tok.getLocation();
2832 ParsedType Ty = ParseTypeName().get();
2833 SourceRange TypeRange(Start, Tok.getLocation());
2834 ER = Actions.ActOnUnaryExprOrTypeTraitExpr(TypeLoc, UETT_AlignOf, true,
2835 Ty.getAsOpaquePtr(), TypeRange);
2836 } else
2837 ER = ParseConstantExpression();
2838
2839 if (getLangOpts().CPlusPlus11)
2840 TryConsumeToken(tok::ellipsis, EllipsisLoc);
2841
2842 return ER;
2843 }
2844
2845 /// ParseAlignmentSpecifier - Parse an alignment-specifier, and add the
2846 /// attribute to Attrs.
2847 ///
2848 /// alignment-specifier:
2849 /// [C11] '_Alignas' '(' type-id ')'
2850 /// [C11] '_Alignas' '(' constant-expression ')'
2851 /// [C++11] 'alignas' '(' type-id ...[opt] ')'
2852 /// [C++11] 'alignas' '(' assignment-expression ...[opt] ')'
2853 void Parser::ParseAlignmentSpecifier(ParsedAttributes &Attrs,
2854 SourceLocation *EndLoc) {
2855 assert(Tok.isOneOf(tok::kw_alignas, tok::kw__Alignas) &&
2856 "Not an alignment-specifier!");
2857
2858 IdentifierInfo *KWName = Tok.getIdentifierInfo();
2859 SourceLocation KWLoc = ConsumeToken();
2860
2861 BalancedDelimiterTracker T(*this, tok::l_paren);
2862 if (T.expectAndConsume())
2863 return;
2864
2865 SourceLocation EllipsisLoc;
2866 ExprResult ArgExpr = ParseAlignArgument(T.getOpenLocation(), EllipsisLoc);
2867 if (ArgExpr.isInvalid()) {
2868 T.skipToEnd();
2869 return;
2870 }
2871
2872 T.consumeClose();
2873 if (EndLoc)
2874 *EndLoc = T.getCloseLocation();
2875
2876 ArgsVector ArgExprs;
2877 ArgExprs.push_back(ArgExpr.get());
2878 Attrs.addNew(KWName, KWLoc, nullptr, KWLoc, ArgExprs.data(), 1,
2879 ParsedAttr::AS_Keyword, EllipsisLoc);
2880 }
2881
2882 /// Determine whether we're looking at something that might be a declarator
2883 /// in a simple-declaration. If it can't possibly be a declarator, maybe
2884 /// diagnose a missing semicolon after a prior tag definition in the decl
2885 /// specifier.
2886 ///
2887 /// \return \c true if an error occurred and this can't be any kind of
2888 /// declaration.
2889 bool
2890 Parser::DiagnoseMissingSemiAfterTagDefinition(DeclSpec &DS, AccessSpecifier AS,
2891 DeclSpecContext DSContext,
2892 LateParsedAttrList *LateAttrs) {
2893 assert(DS.hasTagDefinition() && "shouldn't call this");
2894
2895 bool EnteringContext = (DSContext == DeclSpecContext::DSC_class ||
2896 DSContext == DeclSpecContext::DSC_top_level);
2897
2898 if (getLangOpts().CPlusPlus &&
2899 Tok.isOneOf(tok::identifier, tok::coloncolon, tok::kw_decltype,
2900 tok::annot_template_id) &&
2901 TryAnnotateCXXScopeToken(EnteringContext)) {
2902 SkipMalformedDecl();
2903 return true;
2904 }
2905
2906 bool HasScope = Tok.is(tok::annot_cxxscope);
2907 // Make a copy in case GetLookAheadToken invalidates the result of NextToken.
2908 Token AfterScope = HasScope ? NextToken() : Tok;
2909
2910 // Determine whether the following tokens could possibly be a
2911 // declarator.
2912 bool MightBeDeclarator = true;
2913 if (Tok.isOneOf(tok::kw_typename, tok::annot_typename)) {
2914 // A declarator-id can't start with 'typename'.
2915 MightBeDeclarator = false;
2916 } else if (AfterScope.is(tok::annot_template_id)) {
2917 // If we have a type expressed as a template-id, this cannot be a
2918 // declarator-id (such a type cannot be redeclared in a simple-declaration).
2919 TemplateIdAnnotation *Annot =
2920 static_cast<TemplateIdAnnotation *>(AfterScope.getAnnotationValue());
2921 if (Annot->Kind == TNK_Type_template)
2922 MightBeDeclarator = false;
2923 } else if (AfterScope.is(tok::identifier)) {
2924 const Token &Next = HasScope ? GetLookAheadToken(2) : NextToken();
2925
2926 // These tokens cannot come after the declarator-id in a
2927 // simple-declaration, and are likely to come after a type-specifier.
2928 if (Next.isOneOf(tok::star, tok::amp, tok::ampamp, tok::identifier,
2929 tok::annot_cxxscope, tok::coloncolon)) {
2930 // Missing a semicolon.
2931 MightBeDeclarator = false;
2932 } else if (HasScope) {
2933 // If the declarator-id has a scope specifier, it must redeclare a
2934 // previously-declared entity. If that's a type (and this is not a
2935 // typedef), that's an error.
2936 CXXScopeSpec SS;
2937 Actions.RestoreNestedNameSpecifierAnnotation(
2938 Tok.getAnnotationValue(), Tok.getAnnotationRange(), SS);
2939 IdentifierInfo *Name = AfterScope.getIdentifierInfo();
2940 Sema::NameClassification Classification = Actions.ClassifyName(
2941 getCurScope(), SS, Name, AfterScope.getLocation(), Next,
2942 /*CCC=*/nullptr);
2943 switch (Classification.getKind()) {
2944 case Sema::NC_Error:
2945 SkipMalformedDecl();
2946 return true;
2947
2948 case Sema::NC_Keyword:
2949 llvm_unreachable("typo correction is not possible here");
2950
2951 case Sema::NC_Type:
2952 case Sema::NC_TypeTemplate:
2953 case Sema::NC_UndeclaredNonType:
2954 case Sema::NC_UndeclaredTemplate:
2955 // Not a previously-declared non-type entity.
2956 MightBeDeclarator = false;
2957 break;
2958
2959 case Sema::NC_Unknown:
2960 case Sema::NC_NonType:
2961 case Sema::NC_DependentNonType:
2962 case Sema::NC_ContextIndependentExpr:
2963 case Sema::NC_VarTemplate:
2964 case Sema::NC_FunctionTemplate:
2965 case Sema::NC_Concept:
2966 // Might be a redeclaration of a prior entity.
2967 break;
2968 }
2969 }
2970 }
2971
2972 if (MightBeDeclarator)
2973 return false;
2974
2975 const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy();
2976 Diag(PP.getLocForEndOfToken(DS.getRepAsDecl()->getEndLoc()),
2977 diag::err_expected_after)
2978 << DeclSpec::getSpecifierName(DS.getTypeSpecType(), PPol) << tok::semi;
2979
2980 // Try to recover from the typo, by dropping the tag definition and parsing
2981 // the problematic tokens as a type.
2982 //
2983 // FIXME: Split the DeclSpec into pieces for the standalone
2984 // declaration and pieces for the following declaration, instead
2985 // of assuming that all the other pieces attach to new declaration,
2986 // and call ParsedFreeStandingDeclSpec as appropriate.
2987 DS.ClearTypeSpecType();
2988 ParsedTemplateInfo NotATemplate;
2989 ParseDeclarationSpecifiers(DS, NotATemplate, AS, DSContext, LateAttrs);
2990 return false;
2991 }
2992
2993 // Choose the apprpriate diagnostic error for why fixed point types are
2994 // disabled, set the previous specifier, and mark as invalid.
2995 static void SetupFixedPointError(const LangOptions &LangOpts,
2996 const char *&PrevSpec, unsigned &DiagID,
2997 bool &isInvalid) {
2998 assert(!LangOpts.FixedPoint);
2999 DiagID = diag::err_fixed_point_not_enabled;
3000 PrevSpec = ""; // Not used by diagnostic
3001 isInvalid = true;
3002 }
3003
3004 /// ParseDeclarationSpecifiers
3005 /// declaration-specifiers: [C99 6.7]
3006 /// storage-class-specifier declaration-specifiers[opt]
3007 /// type-specifier declaration-specifiers[opt]
3008 /// [C99] function-specifier declaration-specifiers[opt]
3009 /// [C11] alignment-specifier declaration-specifiers[opt]
3010 /// [GNU] attributes declaration-specifiers[opt]
3011 /// [Clang] '__module_private__' declaration-specifiers[opt]
3012 /// [ObjC1] '__kindof' declaration-specifiers[opt]
3013 ///
3014 /// storage-class-specifier: [C99 6.7.1]
3015 /// 'typedef'
3016 /// 'extern'
3017 /// 'static'
3018 /// 'auto'
3019 /// 'register'
3020 /// [C++] 'mutable'
3021 /// [C++11] 'thread_local'
3022 /// [C11] '_Thread_local'
3023 /// [GNU] '__thread'
3024 /// function-specifier: [C99 6.7.4]
3025 /// [C99] 'inline'
3026 /// [C++] 'virtual'
3027 /// [C++] 'explicit'
3028 /// [OpenCL] '__kernel'
3029 /// 'friend': [C++ dcl.friend]
3030 /// 'constexpr': [C++0x dcl.constexpr]
3031 void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
3032 const ParsedTemplateInfo &TemplateInfo,
3033 AccessSpecifier AS,
3034 DeclSpecContext DSContext,
3035 LateParsedAttrList *LateAttrs) {
3036 if (DS.getSourceRange().isInvalid()) {
3037 // Start the range at the current token but make the end of the range
3038 // invalid. This will make the entire range invalid unless we successfully
3039 // consume a token.
3040 DS.SetRangeStart(Tok.getLocation());
3041 DS.SetRangeEnd(SourceLocation());
3042 }
3043
3044 bool EnteringContext = (DSContext == DeclSpecContext::DSC_class ||
3045 DSContext == DeclSpecContext::DSC_top_level);
3046 bool AttrsLastTime = false;
3047 ParsedAttributesWithRange attrs(AttrFactory);
3048 // We use Sema's policy to get bool macros right.
3049 PrintingPolicy Policy = Actions.getPrintingPolicy();
3050 while (1) {
3051 bool isInvalid = false;
3052 bool isStorageClass = false;
3053 const char *PrevSpec = nullptr;
3054 unsigned DiagID = 0;
3055
3056 // This value needs to be set to the location of the last token if the last
3057 // token of the specifier is already consumed.
3058 SourceLocation ConsumedEnd;
3059
3060 // HACK: MSVC doesn't consider _Atomic to be a keyword and its STL
3061 // implementation for VS2013 uses _Atomic as an identifier for one of the
3062 // classes in <atomic>.
3063 //
3064 // A typedef declaration containing _Atomic<...> is among the places where
3065 // the class is used. If we are currently parsing such a declaration, treat
3066 // the token as an identifier.
3067 if (getLangOpts().MSVCCompat && Tok.is(tok::kw__Atomic) &&
3068 DS.getStorageClassSpec() == clang::DeclSpec::SCS_typedef &&
3069 !DS.hasTypeSpecifier() && GetLookAheadToken(1).is(tok::less))
3070 Tok.setKind(tok::identifier);
3071
3072 SourceLocation Loc = Tok.getLocation();
3073
3074 switch (Tok.getKind()) {
3075 default:
3076 DoneWithDeclSpec:
3077 if (!AttrsLastTime)
3078 ProhibitAttributes(attrs);
3079 else {
3080 // Reject C++11 attributes that appertain to decl specifiers as
3081 // we don't support any C++11 attributes that appertain to decl
3082 // specifiers. This also conforms to what g++ 4.8 is doing.
3083 ProhibitCXX11Attributes(attrs, diag::err_attribute_not_type_attr);
3084
3085 DS.takeAttributesFrom(attrs);
3086 }
3087
3088 // If this is not a declaration specifier token, we're done reading decl
3089 // specifiers. First verify that DeclSpec's are consistent.
3090 DS.Finish(Actions, Policy);
3091 return;
3092
3093 case tok::l_square:
3094 case tok::kw_alignas:
3095 if (!standardAttributesAllowed() || !isCXX11AttributeSpecifier())
3096 goto DoneWithDeclSpec;
3097
3098 ProhibitAttributes(attrs);
3099 // FIXME: It would be good to recover by accepting the attributes,
3100 // but attempting to do that now would cause serious
3101 // madness in terms of diagnostics.
3102 attrs.clear();
3103 attrs.Range = SourceRange();
3104
3105 ParseCXX11Attributes(attrs);
3106 AttrsLastTime = true;
3107 continue;
3108
3109 case tok::code_completion: {
3110 Sema::ParserCompletionContext CCC = Sema::PCC_Namespace;
3111 if (DS.hasTypeSpecifier()) {
3112 bool AllowNonIdentifiers
3113 = (getCurScope()->getFlags() & (Scope::ControlScope |
3114 Scope::BlockScope |
3115 Scope::TemplateParamScope |
3116 Scope::FunctionPrototypeScope |
3117 Scope::AtCatchScope)) == 0;
3118 bool AllowNestedNameSpecifiers
3119 = DSContext == DeclSpecContext::DSC_top_level ||
3120 (DSContext == DeclSpecContext::DSC_class && DS.isFriendSpecified());
3121
3122 Actions.CodeCompleteDeclSpec(getCurScope(), DS,
3123 AllowNonIdentifiers,
3124 AllowNestedNameSpecifiers);
3125 return cutOffParsing();
3126 }
3127
3128 if (getCurScope()->getFnParent() || getCurScope()->getBlockParent())
3129 CCC = Sema::PCC_LocalDeclarationSpecifiers;
3130 else if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate)
3131 CCC = DSContext == DeclSpecContext::DSC_class ? Sema::PCC_MemberTemplate
3132 : Sema::PCC_Template;
3133 else if (DSContext == DeclSpecContext::DSC_class)
3134 CCC = Sema::PCC_Class;
3135 else if (CurParsedObjCImpl)
3136 CCC = Sema::PCC_ObjCImplementation;
3137
3138 Actions.CodeCompleteOrdinaryName(getCurScope(), CCC);
3139 return cutOffParsing();
3140 }
3141
3142 case tok::coloncolon: // ::foo::bar
3143 // C++ scope specifier. Annotate and loop, or bail out on error.
3144 if (TryAnnotateCXXScopeToken(EnteringContext)) {
3145 if (!DS.hasTypeSpecifier())
3146 DS.SetTypeSpecError();
3147 goto DoneWithDeclSpec;
3148 }
3149 if (Tok.is(tok::coloncolon)) // ::new or ::delete
3150 goto DoneWithDeclSpec;
3151 continue;
3152
3153 case tok::annot_cxxscope: {
3154 if (DS.hasTypeSpecifier() || DS.isTypeAltiVecVector())
3155 goto DoneWithDeclSpec;
3156
3157 CXXScopeSpec SS;
3158 Actions.RestoreNestedNameSpecifierAnnotation(Tok.getAnnotationValue(),
3159 Tok.getAnnotationRange(),
3160 SS);
3161
3162 // We are looking for a qualified typename.
3163 Token Next = NextToken();
3164 if (Next.is(tok::annot_template_id) &&
3165 static_cast<TemplateIdAnnotation *>(Next.getAnnotationValue())
3166 ->Kind == TNK_Type_template) {
3167 // We have a qualified template-id, e.g., N::A<int>
3168
3169 // If this would be a valid constructor declaration with template
3170 // arguments, we will reject the attempt to form an invalid type-id
3171 // referring to the injected-class-name when we annotate the token,
3172 // per C++ [class.qual]p2.
3173 //
3174 // To improve diagnostics for this case, parse the declaration as a
3175 // constructor (and reject the extra template arguments later).
3176 TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Next);
3177 if ((DSContext == DeclSpecContext::DSC_top_level ||
3178 DSContext == DeclSpecContext::DSC_class) &&
3179 TemplateId->Name &&
3180 Actions.isCurrentClassName(*TemplateId->Name, getCurScope(), &SS) &&
3181 isConstructorDeclarator(/*Unqualified=*/false)) {
3182 // The user meant this to be an out-of-line constructor
3183 // definition, but template arguments are not allowed
3184 // there. Just allow this as a constructor; we'll
3185 // complain about it later.
3186 goto DoneWithDeclSpec;
3187 }
3188
3189 DS.getTypeSpecScope() = SS;
3190 ConsumeAnnotationToken(); // The C++ scope.
3191 assert(Tok.is(tok::annot_template_id) &&
3192 "ParseOptionalCXXScopeSpecifier not working");
3193 AnnotateTemplateIdTokenAsType(SS);
3194 continue;
3195 }
3196
3197 if (Next.is(tok::annot_template_id) &&
3198 static_cast<TemplateIdAnnotation *>(Next.getAnnotationValue())
3199 ->Kind == TNK_Concept_template &&
3200 GetLookAheadToken(2).isOneOf(tok::kw_auto, tok::kw_decltype)) {
3201 DS.getTypeSpecScope() = SS;
3202 // This is a qualified placeholder-specifier, e.g., ::C<int> auto ...
3203 // Consume the scope annotation and continue to consume the template-id
3204 // as a placeholder-specifier.
3205 ConsumeAnnotationToken();
3206 continue;
3207 }
3208
3209 if (Next.is(tok::annot_typename)) {
3210 DS.getTypeSpecScope() = SS;
3211 ConsumeAnnotationToken(); // The C++ scope.
3212 if (Tok.getAnnotationValue()) {
3213 ParsedType T = getTypeAnnotation(Tok);
3214 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename,
3215 Tok.getAnnotationEndLoc(),
3216 PrevSpec, DiagID, T, Policy);
3217 if (isInvalid)
3218 break;
3219 }
3220 else
3221 DS.SetTypeSpecError();
3222 DS.SetRangeEnd(Tok.getAnnotationEndLoc());
3223 ConsumeAnnotationToken(); // The typename
3224 }
3225
3226 if (Next.isNot(tok::identifier))
3227 goto DoneWithDeclSpec;
3228
3229 // Check whether this is a constructor declaration. If we're in a
3230 // context where the identifier could be a class name, and it has the
3231 // shape of a constructor declaration, process it as one.
3232 if ((DSContext == DeclSpecContext::DSC_top_level ||
3233 DSContext == DeclSpecContext::DSC_class) &&
3234 Actions.isCurrentClassName(*Next.getIdentifierInfo(), getCurScope(),
3235 &SS) &&
3236 isConstructorDeclarator(/*Unqualified*/ false))
3237 goto DoneWithDeclSpec;
3238
3239 ParsedType TypeRep =
3240 Actions.getTypeName(*Next.getIdentifierInfo(), Next.getLocation(),
3241 getCurScope(), &SS, false, false, nullptr,
3242 /*IsCtorOrDtorName=*/false,
3243 /*WantNontrivialTypeSourceInfo=*/true,
3244 isClassTemplateDeductionContext(DSContext));
3245
3246 // If the referenced identifier is not a type, then this declspec is
3247 // erroneous: We already checked about that it has no type specifier, and
3248 // C++ doesn't have implicit int. Diagnose it as a typo w.r.t. to the
3249 // typename.
3250 if (!TypeRep) {
3251 if (TryAnnotateTypeConstraint())
3252 goto DoneWithDeclSpec;
3253 if (isTypeConstraintAnnotation())
3254 continue;
3255 if (NextToken().is(tok::annot_template_id))
3256 // Might have been annotated by TryAnnotateTypeConstraint.
3257 continue;
3258 // Eat the scope spec so the identifier is current.
3259 ConsumeAnnotationToken();
3260 ParsedAttributesWithRange Attrs(AttrFactory);
3261 if (ParseImplicitInt(DS, &SS, TemplateInfo, AS, DSContext, Attrs)) {
3262 if (!Attrs.empty()) {
3263 AttrsLastTime = true;
3264 attrs.takeAllFrom(Attrs);
3265 }
3266 continue;
3267 }
3268 goto DoneWithDeclSpec;
3269 }
3270
3271 DS.getTypeSpecScope() = SS;
3272 ConsumeAnnotationToken(); // The C++ scope.
3273
3274 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
3275 DiagID, TypeRep, Policy);
3276 if (isInvalid)
3277 break;
3278
3279 DS.SetRangeEnd(Tok.getLocation());
3280 ConsumeToken(); // The typename.
3281
3282 continue;
3283 }
3284
3285 case tok::annot_typename: {
3286 // If we've previously seen a tag definition, we were almost surely
3287 // missing a semicolon after it.
3288 if (DS.hasTypeSpecifier() && DS.hasTagDefinition())
3289 goto DoneWithDeclSpec;
3290
3291 if (Tok.getAnnotationValue()) {
3292 ParsedType T = getTypeAnnotation(Tok);
3293 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
3294 DiagID, T, Policy);
3295 } else
3296 DS.SetTypeSpecError();
3297
3298 if (isInvalid)
3299 break;
3300
3301 DS.SetRangeEnd(Tok.getAnnotationEndLoc());
3302 ConsumeAnnotationToken(); // The typename
3303
3304 continue;
3305 }
3306
3307 case tok::kw___is_signed:
3308 // GNU libstdc++ 4.4 uses __is_signed as an identifier, but Clang
3309 // typically treats it as a trait. If we see __is_signed as it appears
3310 // in libstdc++, e.g.,
3311 //
3312 // static const bool __is_signed;
3313 //
3314 // then treat __is_signed as an identifier rather than as a keyword.
3315 if (DS.getTypeSpecType() == TST_bool &&
3316 DS.getTypeQualifiers() == DeclSpec::TQ_const &&
3317 DS.getStorageClassSpec() == DeclSpec::SCS_static)
3318 TryKeywordIdentFallback(true);
3319
3320 // We're done with the declaration-specifiers.
3321 goto DoneWithDeclSpec;
3322
3323 // typedef-name
3324 case tok::kw___super:
3325 case tok::kw_decltype:
3326 case tok::identifier: {
3327 // This identifier can only be a typedef name if we haven't already seen
3328 // a type-specifier. Without this check we misparse:
3329 // typedef int X; struct Y { short X; }; as 'short int'.
3330 if (DS.hasTypeSpecifier())
3331 goto DoneWithDeclSpec;
3332
3333 // If the token is an identifier named "__declspec" and Microsoft
3334 // extensions are not enabled, it is likely that there will be cascading
3335 // parse errors if this really is a __declspec attribute. Attempt to
3336 // recognize that scenario and recover gracefully.
3337 if (!getLangOpts().DeclSpecKeyword && Tok.is(tok::identifier) &&
3338 Tok.getIdentifierInfo()->getName().equals("__declspec")) {
3339 Diag(Loc, diag::err_ms_attributes_not_enabled);
3340
3341 // The next token should be an open paren. If it is, eat the entire
3342 // attribute declaration and continue.
3343 if (NextToken().is(tok::l_paren)) {
3344 // Consume the __declspec identifier.
3345 ConsumeToken();
3346
3347 // Eat the parens and everything between them.
3348 BalancedDelimiterTracker T(*this, tok::l_paren);
3349 if (T.consumeOpen()) {
3350 assert(false && "Not a left paren?");
3351 return;
3352 }
3353 T.skipToEnd();
3354 continue;
3355 }
3356 }
3357
3358 // In C++, check to see if this is a scope specifier like foo::bar::, if
3359 // so handle it as such. This is important for ctor parsing.
3360 if (getLangOpts().CPlusPlus) {
3361 if (TryAnnotateCXXScopeToken(EnteringContext)) {
3362 DS.SetTypeSpecError();
3363 goto DoneWithDeclSpec;
3364 }
3365 if (!Tok.is(tok::identifier))
3366 continue;
3367 }
3368
3369 // Check for need to substitute AltiVec keyword tokens.
3370 if (TryAltiVecToken(DS, Loc, PrevSpec, DiagID, isInvalid))
3371 break;
3372
3373 // [AltiVec] 2.2: [If the 'vector' specifier is used] The syntax does not
3374 // allow the use of a typedef name as a type specifier.
3375 if (DS.isTypeAltiVecVector())
3376 goto DoneWithDeclSpec;
3377
3378 if (DSContext == DeclSpecContext::DSC_objc_method_result &&
3379 isObjCInstancetype()) {
3380 ParsedType TypeRep = Actions.ActOnObjCInstanceType(Loc);
3381 assert(TypeRep);
3382 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
3383 DiagID, TypeRep, Policy);
3384 if (isInvalid)
3385 break;
3386
3387 DS.SetRangeEnd(Loc);
3388 ConsumeToken();
3389 continue;
3390 }
3391
3392 // If we're in a context where the identifier could be a class name,
3393 // check whether this is a constructor declaration.
3394 if (getLangOpts().CPlusPlus && DSContext == DeclSpecContext::DSC_class &&
3395 Actions.isCurrentClassName(*Tok.getIdentifierInfo(), getCurScope()) &&
3396 isConstructorDeclarator(/*Unqualified*/true))
3397 goto DoneWithDeclSpec;
3398
3399 ParsedType TypeRep = Actions.getTypeName(
3400 *Tok.getIdentifierInfo(), Tok.getLocation(), getCurScope(), nullptr,
3401 false, false, nullptr, false, false,
3402 isClassTemplateDeductionContext(DSContext));
3403
3404 // If this is not a typedef name, don't parse it as part of the declspec,
3405 // it must be an implicit int or an error.
3406 if (!TypeRep) {
3407 if (TryAnnotateTypeConstraint())
3408 goto DoneWithDeclSpec;
3409 if (isTypeConstraintAnnotation())
3410 continue;
3411 if (Tok.is(tok::annot_template_id))
3412 // Might have been annotated by TryAnnotateTypeConstraint.
3413 continue;
3414 ParsedAttributesWithRange Attrs(AttrFactory);
3415 if (ParseImplicitInt(DS, nullptr, TemplateInfo, AS, DSContext, Attrs)) {
3416 if (!Attrs.empty()) {
3417 AttrsLastTime = true;
3418 attrs.takeAllFrom(Attrs);
3419 }
3420 continue;
3421 }
3422 goto DoneWithDeclSpec;
3423 }
3424
3425 // Likewise, if this is a context where the identifier could be a template
3426 // name, check whether this is a deduction guide declaration.
3427 if (getLangOpts().CPlusPlus17 &&
3428 (DSContext == DeclSpecContext::DSC_class ||
3429 DSContext == DeclSpecContext::DSC_top_level) &&
3430 Actions.isDeductionGuideName(getCurScope(), *Tok.getIdentifierInfo(),
3431 Tok.getLocation()) &&
3432 isConstructorDeclarator(/*Unqualified*/ true,
3433 /*DeductionGuide*/ true))
3434 goto DoneWithDeclSpec;
3435
3436 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
3437 DiagID, TypeRep, Policy);
3438 if (isInvalid)
3439 break;
3440
3441 DS.SetRangeEnd(Tok.getLocation());
3442 ConsumeToken(); // The identifier
3443
3444 // Objective-C supports type arguments and protocol references
3445 // following an Objective-C object or object pointer
3446 // type. Handle either one of them.
3447 if (Tok.is(tok::less) && getLangOpts().ObjC) {
3448 SourceLocation NewEndLoc;
3449 TypeResult NewTypeRep = parseObjCTypeArgsAndProtocolQualifiers(
3450 Loc, TypeRep, /*consumeLastToken=*/true,
3451 NewEndLoc);
3452 if (NewTypeRep.isUsable()) {
3453 DS.UpdateTypeRep(NewTypeRep.get());
3454 DS.SetRangeEnd(NewEndLoc);
3455 }
3456 }
3457
3458 // Need to support trailing type qualifiers (e.g. "id<p> const").
3459 // If a type specifier follows, it will be diagnosed elsewhere.
3460 continue;
3461 }
3462
3463 // type-name or placeholder-specifier
3464 case tok::annot_template_id: {
3465 TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
3466 if (TemplateId->Kind == TNK_Concept_template) {
3467 if (NextToken().is(tok::identifier)) {
3468 Diag(Loc, diag::err_placeholder_expected_auto_or_decltype_auto)
3469 << FixItHint::CreateInsertion(NextToken().getLocation(), "auto");
3470 // Attempt to continue as if 'auto' was placed here.
3471 isInvalid = DS.SetTypeSpecType(TST_auto, Loc, PrevSpec, DiagID,
3472 TemplateId, Policy);
3473 break;
3474 }
3475 if (!NextToken().isOneOf(tok::kw_auto, tok::kw_decltype))
3476 goto DoneWithDeclSpec;
3477 ConsumeAnnotationToken();
3478 SourceLocation AutoLoc = Tok.getLocation();
3479 if (TryConsumeToken(tok::kw_decltype)) {
3480 BalancedDelimiterTracker Tracker(*this, tok::l_paren);
3481 if (Tracker.consumeOpen()) {
3482 // Something like `void foo(Iterator decltype i)`
3483 Diag(Tok, diag::err_expected) << tok::l_paren;
3484 } else {
3485 if (!TryConsumeToken(tok::kw_auto)) {
3486 // Something like `void foo(Iterator decltype(int) i)`
3487 Tracker.skipToEnd();
3488 Diag(Tok, diag::err_placeholder_expected_auto_or_decltype_auto)
3489 << FixItHint::CreateReplacement(SourceRange(AutoLoc,
3490 Tok.getLocation()),
3491 "auto");
3492 } else {
3493 Tracker.consumeClose();
3494 }
3495 }
3496 ConsumedEnd = Tok.getLocation();
3497 // Even if something went wrong above, continue as if we've seen
3498 // `decltype(auto)`.
3499 isInvalid = DS.SetTypeSpecType(TST_decltype_auto, Loc, PrevSpec,
3500 DiagID, TemplateId, Policy);
3501 } else {
3502 isInvalid = DS.SetTypeSpecType(TST_auto, Loc, PrevSpec, DiagID,
3503 TemplateId, Policy);
3504 }
3505 break;
3506 }
3507
3508 if (TemplateId->Kind != TNK_Type_template &&
3509 TemplateId->Kind != TNK_Undeclared_template) {
3510 // This template-id does not refer to a type name, so we're
3511 // done with the type-specifiers.
3512 goto DoneWithDeclSpec;
3513 }
3514
3515 // If we're in a context where the template-id could be a
3516 // constructor name or specialization, check whether this is a
3517 // constructor declaration.
3518 if (getLangOpts().CPlusPlus && DSContext == DeclSpecContext::DSC_class &&
3519 Actions.isCurrentClassName(*TemplateId->Name, getCurScope()) &&
3520 isConstructorDeclarator(/*Unqualified=*/true))
3521 goto DoneWithDeclSpec;
3522
3523 // Turn the template-id annotation token into a type annotation
3524 // token, then try again to parse it as a type-specifier.
3525 CXXScopeSpec SS;
3526 AnnotateTemplateIdTokenAsType(SS);
3527 continue;
3528 }
3529
3530 // GNU attributes support.
3531 case tok::kw___attribute:
3532 ParseGNUAttributes(DS.getAttributes(), nullptr, LateAttrs);
3533 continue;
3534
3535 // Microsoft declspec support.
3536 case tok::kw___declspec:
3537 ParseMicrosoftDeclSpecs(DS.getAttributes());
3538 continue;
3539
3540 // Microsoft single token adornments.
3541 case tok::kw___forceinline: {
3542 isInvalid = DS.setFunctionSpecForceInline(Loc, PrevSpec, DiagID);
3543 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
3544 SourceLocation AttrNameLoc = Tok.getLocation();
3545 DS.getAttributes().addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc,
3546 nullptr, 0, ParsedAttr::AS_Keyword);
3547 break;
3548 }
3549
3550 case tok::kw___unaligned:
3551 isInvalid = DS.SetTypeQual(DeclSpec::TQ_unaligned, Loc, PrevSpec, DiagID,
3552 getLangOpts());
3553 break;
3554
3555 case tok::kw___sptr:
3556 case tok::kw___uptr:
3557 case tok::kw___ptr64:
3558 case tok::kw___ptr32:
3559 case tok::kw___w64:
3560 case tok::kw___cdecl:
3561 case tok::kw___stdcall:
3562 case tok::kw___fastcall:
3563 case tok::kw___thiscall:
3564 case tok::kw___regcall:
3565 case tok::kw___vectorcall:
3566 ParseMicrosoftTypeAttributes(DS.getAttributes());
3567 continue;
3568
3569 // Borland single token adornments.
3570 case tok::kw___pascal:
3571 ParseBorlandTypeAttributes(DS.getAttributes());
3572 continue;
3573
3574 // OpenCL single token adornments.
3575 case tok::kw___kernel:
3576 ParseOpenCLKernelAttributes(DS.getAttributes());
3577 continue;
3578
3579 // Nullability type specifiers.
3580 case tok::kw__Nonnull:
3581 case tok::kw__Nullable:
3582 case tok::kw__Null_unspecified:
3583 ParseNullabilityTypeSpecifiers(DS.getAttributes());
3584 continue;
3585
3586 // Objective-C 'kindof' types.
3587 case tok::kw___kindof:
3588 DS.getAttributes().addNew(Tok.getIdentifierInfo(), Loc, nullptr, Loc,
3589 nullptr, 0, ParsedAttr::AS_Keyword);
3590 (void)ConsumeToken();
3591 continue;
3592
3593 // storage-class-specifier
3594 case tok::kw_typedef:
3595 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_typedef, Loc,
3596 PrevSpec, DiagID, Policy);
3597 isStorageClass = true;
3598 break;
3599 case tok::kw_extern:
3600 if (DS.getThreadStorageClassSpec() == DeclSpec::TSCS___thread)
3601 Diag(Tok, diag::ext_thread_before) << "extern";
3602 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_extern, Loc,
3603 PrevSpec, DiagID, Policy);
3604 isStorageClass = true;
3605 break;
3606 case tok::kw___private_extern__:
3607 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_private_extern,
3608 Loc, PrevSpec, DiagID, Policy);
3609 isStorageClass = true;
3610 break;
3611 case tok::kw_static:
3612 if (DS.getThreadStorageClassSpec() == DeclSpec::TSCS___thread)
3613 Diag(Tok, diag::ext_thread_before) << "static";
3614 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_static, Loc,
3615 PrevSpec, DiagID, Policy);
3616 isStorageClass = true;
3617 break;
3618 case tok::kw_auto:
3619 if (getLangOpts().CPlusPlus11) {
3620 if (isKnownToBeTypeSpecifier(GetLookAheadToken(1))) {
3621 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
3622 PrevSpec, DiagID, Policy);
3623 if (!isInvalid)
3624 Diag(Tok, diag::ext_auto_storage_class)
3625 << FixItHint::CreateRemoval(DS.getStorageClassSpecLoc());
3626 } else
3627 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto, Loc, PrevSpec,
3628 DiagID, Policy);
3629 } else
3630 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
3631 PrevSpec, DiagID, Policy);
3632 isStorageClass = true;
3633 break;
3634 case tok::kw___auto_type:
3635 Diag(Tok, diag::ext_auto_type);
3636 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto_type, Loc, PrevSpec,
3637 DiagID, Policy);
3638 break;
3639 case tok::kw_register:
3640 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_register, Loc,
3641 PrevSpec, DiagID, Policy);
3642 isStorageClass = true;
3643 break;
3644 case tok::kw_mutable:
3645 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_mutable, Loc,
3646 PrevSpec, DiagID, Policy);
3647 isStorageClass = true;
3648 break;
3649 case tok::kw___thread:
3650 isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS___thread, Loc,
3651 PrevSpec, DiagID);
3652 isStorageClass = true;
3653 break;
3654 case tok::kw_thread_local:
3655 isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS_thread_local, Loc,
3656 PrevSpec, DiagID);
3657 isStorageClass = true;
3658 break;
3659 case tok::kw__Thread_local:
3660 if (!getLangOpts().C11)
3661 Diag(Tok, diag::ext_c11_feature) << Tok.getName();
3662 isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS__Thread_local,
3663 Loc, PrevSpec, DiagID);
3664 isStorageClass = true;
3665 break;
3666
3667 // function-specifier
3668 case tok::kw_inline:
3669 isInvalid = DS.setFunctionSpecInline(Loc, PrevSpec, DiagID);
3670 break;
3671 case tok::kw_virtual:
3672 // C++ for OpenCL does not allow virtual function qualifier, to avoid
3673 // function pointers restricted in OpenCL v2.0 s6.9.a.
3674 if (getLangOpts().OpenCLCPlusPlus) {
3675 DiagID = diag::err_openclcxx_virtual_function;
3676 PrevSpec = Tok.getIdentifierInfo()->getNameStart();
3677 isInvalid = true;
3678 }
3679 else {
3680 isInvalid = DS.setFunctionSpecVirtual(Loc, PrevSpec, DiagID);
3681 }
3682 break;
3683 case tok::kw_explicit: {
3684 SourceLocation ExplicitLoc = Loc;
3685 SourceLocation CloseParenLoc;
3686 ExplicitSpecifier ExplicitSpec(nullptr, ExplicitSpecKind::ResolvedTrue);
3687 ConsumedEnd = ExplicitLoc;
3688 ConsumeToken(); // kw_explicit
3689 if (Tok.is(tok::l_paren)) {
3690 if (getLangOpts().CPlusPlus2a || isExplicitBool() == TPResult::True) {
3691 Diag(Tok.getLocation(), getLangOpts().CPlusPlus2a
3692 ? diag::warn_cxx17_compat_explicit_bool
3693 : diag::ext_explicit_bool);
3694
3695 ExprResult ExplicitExpr(static_cast<Expr *>(nullptr));
3696 BalancedDelimiterTracker Tracker(*this, tok::l_paren);
3697 Tracker.consumeOpen();
3698 ExplicitExpr = ParseConstantExpression();
3699 ConsumedEnd = Tok.getLocation();
3700 if (ExplicitExpr.isUsable()) {
3701 CloseParenLoc = Tok.getLocation();
3702 Tracker.consumeClose();
3703 ExplicitSpec =
3704 Actions.ActOnExplicitBoolSpecifier(ExplicitExpr.get());
3705 } else
3706 Tracker.skipToEnd();
3707 } else {
3708 Diag(Tok.getLocation(), diag::warn_cxx2a_compat_explicit_bool);
3709 }
3710 }
3711 isInvalid = DS.setFunctionSpecExplicit(ExplicitLoc, PrevSpec, DiagID,
3712 ExplicitSpec, CloseParenLoc);
3713 break;
3714 }
3715 case tok::kw__Noreturn:
3716 if (!getLangOpts().C11)
3717 Diag(Tok, diag::ext_c11_feature) << Tok.getName();
3718 isInvalid = DS.setFunctionSpecNoreturn(Loc, PrevSpec, DiagID);
3719 break;
3720
3721 // alignment-specifier
3722 case tok::kw__Alignas:
3723 if (!getLangOpts().C11)
3724 Diag(Tok, diag::ext_c11_feature) << Tok.getName();
3725 ParseAlignmentSpecifier(DS.getAttributes());
3726 continue;
3727
3728 // friend
3729 case tok::kw_friend:
3730 if (DSContext == DeclSpecContext::DSC_class)
3731 isInvalid = DS.SetFriendSpec(Loc, PrevSpec, DiagID);
3732 else {
3733 PrevSpec = ""; // not actually used by the diagnostic
3734 DiagID = diag::err_friend_invalid_in_context;
3735 isInvalid = true;
3736 }
3737 break;
3738
3739 // Modules
3740 case tok::kw___module_private__:
3741 isInvalid = DS.setModulePrivateSpec(Loc, PrevSpec, DiagID);
3742 break;
3743
3744 // constexpr, consteval, constinit specifiers
3745 case tok::kw_constexpr:
3746 isInvalid = DS.SetConstexprSpec(CSK_constexpr, Loc, PrevSpec, DiagID);
3747 break;
3748 case tok::kw_consteval:
3749 isInvalid = DS.SetConstexprSpec(CSK_consteval, Loc, PrevSpec, DiagID);
3750 break;
3751 case tok::kw_constinit:
3752 isInvalid = DS.SetConstexprSpec(CSK_constinit, Loc, PrevSpec, DiagID);
3753 break;
3754
3755 // type-specifier
3756 case tok::kw_short:
3757 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_short, Loc, PrevSpec,
3758 DiagID, Policy);
3759 break;
3760 case tok::kw_long:
3761 if (DS.getTypeSpecWidth() != DeclSpec::TSW_long)
3762 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_long, Loc, PrevSpec,
3763 DiagID, Policy);
3764 else
3765 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
3766 DiagID, Policy);
3767 break;
3768 case tok::kw___int64:
3769 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
3770 DiagID, Policy);
3771 break;
3772 case tok::kw_signed:
3773 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_signed, Loc, PrevSpec,
3774 DiagID);
3775 break;
3776 case tok::kw_unsigned:
3777 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_unsigned, Loc, PrevSpec,
3778 DiagID);
3779 break;
3780 case tok::kw__Complex:
3781 if (!getLangOpts().C99)
3782 Diag(Tok, diag::ext_c99_feature) << Tok.getName();
3783 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_complex, Loc, PrevSpec,
3784 DiagID);
3785 break;
3786 case tok::kw__Imaginary:
3787 if (!getLangOpts().C99)
3788 Diag(Tok, diag::ext_c99_feature) << Tok.getName();
3789 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_imaginary, Loc, PrevSpec,
3790 DiagID);
3791 break;
3792 case tok::kw_void:
3793 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_void, Loc, PrevSpec,
3794 DiagID, Policy);
3795 break;
3796 case tok::kw_char:
3797 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char, Loc, PrevSpec,
3798 DiagID, Policy);
3799 break;
3800 case tok::kw_int:
3801 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, PrevSpec,
3802 DiagID, Policy);
3803 break;
3804 case tok::kw___int128:
3805 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int128, Loc, PrevSpec,
3806 DiagID, Policy);
3807 break;
3808 case tok::kw_half:
3809 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_half, Loc, PrevSpec,
3810 DiagID, Policy);
3811 break;
3812 case tok::kw_float:
3813 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float, Loc, PrevSpec,
3814 DiagID, Policy);
3815 break;
3816 case tok::kw_double:
3817 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_double, Loc, PrevSpec,
3818 DiagID, Policy);
3819 break;
3820 case tok::kw__Float16:
3821 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float16, Loc, PrevSpec,
3822 DiagID, Policy);
3823 break;
3824 case tok::kw__Accum:
3825 if (!getLangOpts().FixedPoint) {
3826 SetupFixedPointError(getLangOpts(), PrevSpec, DiagID, isInvalid);
3827 } else {
3828 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_accum, Loc, PrevSpec,
3829 DiagID, Policy);
3830 }
3831 break;
3832 case tok::kw__Fract:
3833 if (!getLangOpts().FixedPoint) {
3834 SetupFixedPointError(getLangOpts(), PrevSpec, DiagID, isInvalid);
3835 } else {
3836 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_fract, Loc, PrevSpec,
3837 DiagID, Policy);
3838 }
3839 break;
3840 case tok::kw__Sat:
3841 if (!getLangOpts().FixedPoint) {
3842 SetupFixedPointError(getLangOpts(), PrevSpec, DiagID, isInvalid);
3843 } else {
3844 isInvalid = DS.SetTypeSpecSat(Loc, PrevSpec, DiagID);
3845 }
3846 break;
3847 case tok::kw___float128:
3848 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float128, Loc, PrevSpec,
3849 DiagID, Policy);
3850 break;
3851 case tok::kw_wchar_t:
3852 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_wchar, Loc, PrevSpec,
3853 DiagID, Policy);
3854 break;
3855 case tok::kw_char8_t:
3856 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char8, Loc, PrevSpec,
3857 DiagID, Policy);
3858 break;
3859 case tok::kw_char16_t:
3860 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char16, Loc, PrevSpec,
3861 DiagID, Policy);
3862 break;
3863 case tok::kw_char32_t:
3864 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char32, Loc, PrevSpec,
3865 DiagID, Policy);
3866 break;
3867 case tok::kw_bool:
3868 case tok::kw__Bool:
3869 if (Tok.is(tok::kw__Bool) && !getLangOpts().C99)
3870 Diag(Tok, diag::ext_c99_feature) << Tok.getName();
3871
3872 if (Tok.is(tok::kw_bool) &&
3873 DS.getTypeSpecType() != DeclSpec::TST_unspecified &&
3874 DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
3875 PrevSpec = ""; // Not used by the diagnostic.
3876 DiagID = diag::err_bool_redeclaration;
3877 // For better error recovery.
3878 Tok.setKind(tok::identifier);
3879 isInvalid = true;
3880 } else {
3881 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_bool, Loc, PrevSpec,
3882 DiagID, Policy);
3883 }
3884 break;
3885 case tok::kw__Decimal32:
3886 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal32, Loc, PrevSpec,
3887 DiagID, Policy);
3888 break;
3889 case tok::kw__Decimal64:
3890 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal64, Loc, PrevSpec,
3891 DiagID, Policy);
3892 break;
3893 case tok::kw__Decimal128:
3894 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal128, Loc, PrevSpec,
3895 DiagID, Policy);
3896 break;
3897 case tok::kw___vector:
3898 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID, Policy);
3899 break;
3900 case tok::kw___pixel:
3901 isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID, Policy);
3902 break;
3903 case tok::kw___bool:
3904 isInvalid = DS.SetTypeAltiVecBool(true, Loc, PrevSpec, DiagID, Policy);
3905 break;
3906 case tok::kw_pipe:
3907 if (!getLangOpts().OpenCL || (getLangOpts().OpenCLVersion < 200 &&
3908 !getLangOpts().OpenCLCPlusPlus)) {
3909 // OpenCL 2.0 defined this keyword. OpenCL 1.2 and earlier should
3910 // support the "pipe" word as identifier.
3911 Tok.getIdentifierInfo()->revertTokenIDToIdentifier();
3912 goto DoneWithDeclSpec;
3913 }
3914 isInvalid = DS.SetTypePipe(true, Loc, PrevSpec, DiagID, Policy);
3915 break;
3916 #define GENERIC_IMAGE_TYPE(ImgType, Id) \
3917 case tok::kw_##ImgType##_t: \
3918 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_##ImgType##_t, Loc, PrevSpec, \
3919 DiagID, Policy); \
3920 break;
3921 #include "clang/Basic/OpenCLImageTypes.def"
3922 case tok::kw___unknown_anytype:
3923 isInvalid = DS.SetTypeSpecType(TST_unknown_anytype, Loc,
3924 PrevSpec, DiagID, Policy);
3925 break;
3926
3927 // class-specifier:
3928 case tok::kw_class:
3929 case tok::kw_struct:
3930 case tok::kw___interface:
3931 case tok::kw_union: {
3932 tok::TokenKind Kind = Tok.getKind();
3933 ConsumeToken();
3934
3935 // These are attributes following class specifiers.
3936 // To produce better diagnostic, we parse them when
3937 // parsing class specifier.
3938 ParsedAttributesWithRange Attributes(AttrFactory);
3939 ParseClassSpecifier(Kind, Loc, DS, TemplateInfo, AS,
3940 EnteringContext, DSContext, Attributes);
3941
3942 // If there are attributes following class specifier,
3943 // take them over and handle them here.
3944 if (!Attributes.empty()) {
3945 AttrsLastTime = true;
3946 attrs.takeAllFrom(Attributes);
3947 }
3948 continue;
3949 }
3950
3951 // enum-specifier:
3952 case tok::kw_enum:
3953 ConsumeToken();
3954 ParseEnumSpecifier(Loc, DS, TemplateInfo, AS, DSContext);
3955 continue;
3956
3957 // cv-qualifier:
3958 case tok::kw_const:
3959 isInvalid = DS.SetTypeQual(DeclSpec::TQ_const, Loc, PrevSpec, DiagID,
3960 getLangOpts());
3961 break;
3962 case tok::kw_volatile:
3963 isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
3964 getLangOpts());
3965 break;
3966 case tok::kw_restrict:
3967 isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
3968 getLangOpts());
3969 break;
3970
3971 // C++ typename-specifier:
3972 case tok::kw_typename:
3973 if (TryAnnotateTypeOrScopeToken()) {
3974 DS.SetTypeSpecError();
3975 goto DoneWithDeclSpec;
3976 }
3977 if (!Tok.is(tok::kw_typename))
3978 continue;
3979 break;
3980
3981 // GNU typeof support.
3982 case tok::kw_typeof:
3983 ParseTypeofSpecifier(DS);
3984 continue;
3985
3986 case tok::annot_decltype:
3987 ParseDecltypeSpecifier(DS);
3988 continue;
3989
3990 case tok::annot_pragma_pack:
3991 HandlePragmaPack();
3992 continue;
3993
3994 case tok::annot_pragma_ms_pragma:
3995 HandlePragmaMSPragma();
3996 continue;
3997
3998 case tok::annot_pragma_ms_vtordisp:
3999 HandlePragmaMSVtorDisp();
4000 continue;
4001
4002 case tok::annot_pragma_ms_pointers_to_members:
4003 HandlePragmaMSPointersToMembers();
4004 continue;
4005
4006 case tok::kw___underlying_type:
4007 ParseUnderlyingTypeSpecifier(DS);
4008 continue;
4009
4010 case tok::kw__Atomic:
4011 // C11 6.7.2.4/4:
4012 // If the _Atomic keyword is immediately followed by a left parenthesis,
4013 // it is interpreted as a type specifier (with a type name), not as a
4014 // type qualifier.
4015 if (!getLangOpts().C11)
4016 Diag(Tok, diag::ext_c11_feature) << Tok.getName();
4017
4018 if (NextToken().is(tok::l_paren)) {
4019 ParseAtomicSpecifier(DS);
4020 continue;
4021 }
4022 isInvalid = DS.SetTypeQual(DeclSpec::TQ_atomic, Loc, PrevSpec, DiagID,
4023 getLangOpts());
4024 break;
4025
4026 // OpenCL address space qualifiers:
4027 case tok::kw___generic:
4028 // generic address space is introduced only in OpenCL v2.0
4029 // see OpenCL C Spec v2.0 s6.5.5
4030 if (Actions.getLangOpts().OpenCLVersion < 200 &&
4031 !Actions.getLangOpts().OpenCLCPlusPlus) {
4032 DiagID = diag::err_opencl_unknown_type_specifier;
4033 PrevSpec = Tok.getIdentifierInfo()->getNameStart();
4034 isInvalid = true;
4035 break;
4036 }
4037 LLVM_FALLTHROUGH;
4038 case tok::kw_private:
4039 // It's fine (but redundant) to check this for __generic on the
4040 // fallthrough path; we only form the __generic token in OpenCL mode.
4041 if (!getLangOpts().OpenCL)
4042 goto DoneWithDeclSpec;
4043 LLVM_FALLTHROUGH;
4044 case tok::kw___private:
4045 case tok::kw___global:
4046 case tok::kw___local:
4047 case tok::kw___constant:
4048 // OpenCL access qualifiers:
4049 case tok::kw___read_only:
4050 case tok::kw___write_only:
4051 case tok::kw___read_write:
4052 ParseOpenCLQualifiers(DS.getAttributes());
4053 break;
4054
4055 case tok::less:
4056 // GCC ObjC supports types like "<SomeProtocol>" as a synonym for
4057 // "id<SomeProtocol>". This is hopelessly old fashioned and dangerous,
4058 // but we support it.
4059 if (DS.hasTypeSpecifier() || !getLangOpts().ObjC)
4060 goto DoneWithDeclSpec;
4061
4062 SourceLocation StartLoc = Tok.getLocation();
4063 SourceLocation EndLoc;
4064 TypeResult Type = parseObjCProtocolQualifierType(EndLoc);
4065 if (Type.isUsable()) {
4066 if (DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc, StartLoc,
4067 PrevSpec, DiagID, Type.get(),
4068 Actions.getASTContext().getPrintingPolicy()))
4069 Diag(StartLoc, DiagID) << PrevSpec;
4070
4071 DS.SetRangeEnd(EndLoc);
4072 } else {
4073 DS.SetTypeSpecError();
4074 }
4075
4076 // Need to support trailing type qualifiers (e.g. "id<p> const").
4077 // If a type specifier follows, it will be diagnosed elsewhere.
4078 continue;
4079 }
4080
4081 DS.SetRangeEnd(ConsumedEnd.isValid() ? ConsumedEnd : Tok.getLocation());
4082
4083 // If the specifier wasn't legal, issue a diagnostic.
4084 if (isInvalid) {
4085 assert(PrevSpec && "Method did not return previous specifier!");
4086 assert(DiagID);
4087
4088 if (DiagID == diag::ext_duplicate_declspec ||
4089 DiagID == diag::ext_warn_duplicate_declspec ||
4090 DiagID == diag::err_duplicate_declspec)
4091 Diag(Loc, DiagID) << PrevSpec
4092 << FixItHint::CreateRemoval(
4093 SourceRange(Loc, DS.getEndLoc()));
4094 else if (DiagID == diag::err_opencl_unknown_type_specifier) {
4095 Diag(Loc, DiagID) << getLangOpts().OpenCLCPlusPlus
4096 << getLangOpts().getOpenCLVersionTuple().getAsString()
4097 << PrevSpec << isStorageClass;
4098 } else
4099 Diag(Loc, DiagID) << PrevSpec;
4100 }
4101
4102 if (DiagID != diag::err_bool_redeclaration && ConsumedEnd.isInvalid())
4103 // After an error the next token can be an annotation token.
4104 ConsumeAnyToken();
4105
4106 AttrsLastTime = false;
4107 }
4108 }
4109
4110 /// ParseStructDeclaration - Parse a struct declaration without the terminating
4111 /// semicolon.
4112 ///
4113 /// Note that a struct declaration refers to a declaration in a struct,
4114 /// not to the declaration of a struct.
4115 ///
4116 /// struct-declaration:
4117 /// [C2x] attributes-specifier-seq[opt]
4118 /// specifier-qualifier-list struct-declarator-list
4119 /// [GNU] __extension__ struct-declaration
4120 /// [GNU] specifier-qualifier-list
4121 /// struct-declarator-list:
4122 /// struct-declarator
4123 /// struct-declarator-list ',' struct-declarator
4124 /// [GNU] struct-declarator-list ',' attributes[opt] struct-declarator
4125 /// struct-declarator:
4126 /// declarator
4127 /// [GNU] declarator attributes[opt]
4128 /// declarator[opt] ':' constant-expression
4129 /// [GNU] declarator[opt] ':' constant-expression attributes[opt]
4130 ///
4131 void Parser::ParseStructDeclaration(
4132 ParsingDeclSpec &DS,
4133 llvm::function_ref<void(ParsingFieldDeclarator &)> FieldsCallback) {
4134
4135 if (Tok.is(tok::kw___extension__)) {
4136 // __extension__ silences extension warnings in the subexpression.
4137 ExtensionRAIIObject O(Diags); // Use RAII to do this.
4138 ConsumeToken();
4139 return ParseStructDeclaration(DS, FieldsCallback);
4140 }
4141
4142 // Parse leading attributes.
4143 ParsedAttributesWithRange Attrs(AttrFactory);
4144 MaybeParseCXX11Attributes(Attrs);
4145 DS.takeAttributesFrom(Attrs);
4146
4147 // Parse the common specifier-qualifiers-list piece.
4148 ParseSpecifierQualifierList(DS);
4149
4150 // If there are no declarators, this is a free-standing declaration
4151 // specifier. Let the actions module cope with it.
4152 if (Tok.is(tok::semi)) {
4153 RecordDecl *AnonRecord = nullptr;
4154 Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
4155 DS, AnonRecord);
4156 assert(!AnonRecord && "Did not expect anonymous struct or union here");
4157 DS.complete(TheDecl);
4158 return;
4159 }
4160
4161 // Read struct-declarators until we find the semicolon.
4162 bool FirstDeclarator = true;
4163 SourceLocation CommaLoc;
4164 while (1) {
4165 ParsingFieldDeclarator DeclaratorInfo(*this, DS);
4166 DeclaratorInfo.D.setCommaLoc(CommaLoc);
4167
4168 // Attributes are only allowed here on successive declarators.
4169 if (!FirstDeclarator)
4170 MaybeParseGNUAttributes(DeclaratorInfo.D);
4171
4172 /// struct-declarator: declarator
4173 /// struct-declarator: declarator[opt] ':' constant-expression
4174 if (Tok.isNot(tok::colon)) {
4175 // Don't parse FOO:BAR as if it were a typo for FOO::BAR.
4176 ColonProtectionRAIIObject X(*this);
4177 ParseDeclarator(DeclaratorInfo.D);
4178 } else
4179 DeclaratorInfo.D.SetIdentifier(nullptr, Tok.getLocation());
4180
4181 if (TryConsumeToken(tok::colon)) {
4182 ExprResult Res(ParseConstantExpression());
4183 if (Res.isInvalid())
4184 SkipUntil(tok::semi, StopBeforeMatch);
4185 else
4186 DeclaratorInfo.BitfieldSize = Res.get();
4187 }
4188
4189 // If attributes exist after the declarator, parse them.
4190 MaybeParseGNUAttributes(DeclaratorInfo.D);
4191
4192 // We're done with this declarator; invoke the callback.
4193 FieldsCallback(DeclaratorInfo);
4194
4195 // If we don't have a comma, it is either the end of the list (a ';')
4196 // or an error, bail out.
4197 if (!TryConsumeToken(tok::comma, CommaLoc))
4198 return;
4199
4200 FirstDeclarator = false;
4201 }
4202 }
4203
4204 /// ParseStructUnionBody
4205 /// struct-contents:
4206 /// struct-declaration-list
4207 /// [EXT] empty
4208 /// [GNU] "struct-declaration-list" without terminatoring ';'
4209 /// struct-declaration-list:
4210 /// struct-declaration
4211 /// struct-declaration-list struct-declaration
4212 /// [OBC] '@' 'defs' '(' class-name ')'
4213 ///
4214 void Parser::ParseStructUnionBody(SourceLocation RecordLoc,
4215 DeclSpec::TST TagType, Decl *TagDecl) {
4216 PrettyDeclStackTraceEntry CrashInfo(Actions.Context, TagDecl, RecordLoc,
4217 "parsing struct/union body");
4218 assert(!getLangOpts().CPlusPlus && "C++ declarations not supported");
4219
4220 BalancedDelimiterTracker T(*this, tok::l_brace);
4221 if (T.consumeOpen())
4222 return;
4223
4224 ParseScope StructScope(this, Scope::ClassScope|Scope::DeclScope);
4225 Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
4226
4227 SmallVector<Decl *, 32> FieldDecls;
4228
4229 // While we still have something to read, read the declarations in the struct.
4230 while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
4231 Tok.isNot(tok::eof)) {
4232 // Each iteration of this loop reads one struct-declaration.
4233
4234 // Check for extraneous top-level semicolon.
4235 if (Tok.is(tok::semi)) {
4236 ConsumeExtraSemi(InsideStruct, TagType);
4237 continue;
4238 }
4239
4240 // Parse _Static_assert declaration.
4241 if (Tok.is(tok::kw__Static_assert)) {
4242 SourceLocation DeclEnd;
4243 ParseStaticAssertDeclaration(DeclEnd);
4244 continue;
4245 }
4246
4247 if (Tok.is(tok::annot_pragma_pack)) {
4248 HandlePragmaPack();
4249 continue;
4250 }
4251
4252 if (Tok.is(tok::annot_pragma_align)) {
4253 HandlePragmaAlign();
4254 continue;
4255 }
4256
4257 if (Tok.is(tok::annot_pragma_openmp)) {
4258 // Result can be ignored, because it must be always empty.
4259 AccessSpecifier AS = AS_none;
4260 ParsedAttributesWithRange Attrs(AttrFactory);
4261 (void)ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs);
4262 continue;
4263 }
4264
4265 if (tok::isPragmaAnnotation(Tok.getKind())) {
4266 Diag(Tok.getLocation(), diag::err_pragma_misplaced_in_decl)
4267 << DeclSpec::getSpecifierName(
4268 TagType, Actions.getASTContext().getPrintingPolicy());
4269 ConsumeAnnotationToken();
4270 continue;
4271 }
4272
4273 if (!Tok.is(tok::at)) {
4274 auto CFieldCallback = [&](ParsingFieldDeclarator &FD) {
4275 // Install the declarator into the current TagDecl.
4276 Decl *Field =
4277 Actions.ActOnField(getCurScope(), TagDecl,
4278 FD.D.getDeclSpec().getSourceRange().getBegin(),
4279 FD.D, FD.BitfieldSize);
4280 FieldDecls.push_back(Field);
4281 FD.complete(Field);
4282 };
4283
4284 // Parse all the comma separated declarators.
4285 ParsingDeclSpec DS(*this);
4286 ParseStructDeclaration(DS, CFieldCallback);
4287 } else { // Handle @defs
4288 ConsumeToken();
4289 if (!Tok.isObjCAtKeyword(tok::objc_defs)) {
4290 Diag(Tok, diag::err_unexpected_at);
4291 SkipUntil(tok::semi);
4292 continue;
4293 }
4294 ConsumeToken();
4295 ExpectAndConsume(tok::l_paren);
4296 if (!Tok.is(tok::identifier)) {
4297 Diag(Tok, diag::err_expected) << tok::identifier;
4298 SkipUntil(tok::semi);
4299 continue;
4300 }
4301 SmallVector<Decl *, 16> Fields;
4302 Actions.ActOnDefs(getCurScope(), TagDecl, Tok.getLocation(),
4303 Tok.getIdentifierInfo(), Fields);
4304 FieldDecls.insert(FieldDecls.end(), Fields.begin(), Fields.end());
4305 ConsumeToken();
4306 ExpectAndConsume(tok::r_paren);
4307 }
4308
4309 if (TryConsumeToken(tok::semi))
4310 continue;
4311
4312 if (Tok.is(tok::r_brace)) {
4313 ExpectAndConsume(tok::semi, diag::ext_expected_semi_decl_list);
4314 break;
4315 }
4316
4317 ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list);
4318 // Skip to end of block or statement to avoid ext-warning on extra ';'.
4319 SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
4320 // If we stopped at a ';', eat it.
4321 TryConsumeToken(tok::semi);
4322 }
4323
4324 T.consumeClose();
4325
4326 ParsedAttributes attrs(AttrFactory);
4327 // If attributes exist after struct contents, parse them.
4328 MaybeParseGNUAttributes(attrs);
4329
4330 Actions.ActOnFields(getCurScope(), RecordLoc, TagDecl, FieldDecls,
4331 T.getOpenLocation(), T.getCloseLocation(), attrs);
4332 StructScope.Exit();
4333 Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl, T.getRange());
4334 }
4335
4336 /// ParseEnumSpecifier
4337 /// enum-specifier: [C99 6.7.2.2]
4338 /// 'enum' identifier[opt] '{' enumerator-list '}'
4339 ///[C99/C++]'enum' identifier[opt] '{' enumerator-list ',' '}'
4340 /// [GNU] 'enum' attributes[opt] identifier[opt] '{' enumerator-list ',' [opt]
4341 /// '}' attributes[opt]
4342 /// [MS] 'enum' __declspec[opt] identifier[opt] '{' enumerator-list ',' [opt]
4343 /// '}'
4344 /// 'enum' identifier
4345 /// [GNU] 'enum' attributes[opt] identifier
4346 ///
4347 /// [C++11] enum-head '{' enumerator-list[opt] '}'
4348 /// [C++11] enum-head '{' enumerator-list ',' '}'
4349 ///
4350 /// enum-head: [C++11]
4351 /// enum-key attribute-specifier-seq[opt] identifier[opt] enum-base[opt]
4352 /// enum-key attribute-specifier-seq[opt] nested-name-specifier
4353 /// identifier enum-base[opt]
4354 ///
4355 /// enum-key: [C++11]
4356 /// 'enum'
4357 /// 'enum' 'class'
4358 /// 'enum' 'struct'
4359 ///
4360 /// enum-base: [C++11]
4361 /// ':' type-specifier-seq
4362 ///
4363 /// [C++] elaborated-type-specifier:
4364 /// [C++] 'enum' '::'[opt] nested-name-specifier[opt] identifier
4365 ///
4366 void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS,
4367 const ParsedTemplateInfo &TemplateInfo,
4368 AccessSpecifier AS, DeclSpecContext DSC) {
4369 // Parse the tag portion of this.
4370 if (Tok.is(tok::code_completion)) {
4371 // Code completion for an enum name.
4372 Actions.CodeCompleteTag(getCurScope(), DeclSpec::TST_enum);
4373 return cutOffParsing();
4374 }
4375
4376 // If attributes exist after tag, parse them.
4377 ParsedAttributesWithRange attrs(AttrFactory);
4378 MaybeParseGNUAttributes(attrs);
4379 MaybeParseCXX11Attributes(attrs);
4380 MaybeParseMicrosoftDeclSpecs(attrs);
4381
4382 SourceLocation ScopedEnumKWLoc;
4383 bool IsScopedUsingClassTag = false;
4384
4385 // In C++11, recognize 'enum class' and 'enum struct'.
4386 if (Tok.isOneOf(tok::kw_class, tok::kw_struct)) {
4387 Diag(Tok, getLangOpts().CPlusPlus11 ? diag::warn_cxx98_compat_scoped_enum
4388 : diag::ext_scoped_enum);
4389 IsScopedUsingClassTag = Tok.is(tok::kw_class);
4390 ScopedEnumKWLoc = ConsumeToken();
4391
4392 // Attributes are not allowed between these keywords. Diagnose,
4393 // but then just treat them like they appeared in the right place.
4394 ProhibitAttributes(attrs);
4395
4396 // They are allowed afterwards, though.
4397 MaybeParseGNUAttributes(attrs);
4398 MaybeParseCXX11Attributes(attrs);
4399 MaybeParseMicrosoftDeclSpecs(attrs);
4400 }
4401
4402 // C++11 [temp.explicit]p12:
4403 // The usual access controls do not apply to names used to specify
4404 // explicit instantiations.
4405 // We extend this to also cover explicit specializations. Note that
4406 // we don't suppress if this turns out to be an elaborated type
4407 // specifier.
4408 bool shouldDelayDiagsInTag =
4409 (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
4410 TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
4411 SuppressAccessChecks diagsFromTag(*this, shouldDelayDiagsInTag);
4412
4413 // Enum definitions should not be parsed in a trailing-return-type.
4414 bool AllowDeclaration = DSC != DeclSpecContext::DSC_trailing;
4415
4416 CXXScopeSpec &SS = DS.getTypeSpecScope();
4417 if (getLangOpts().CPlusPlus) {
4418 // "enum foo : bar;" is not a potential typo for "enum foo::bar;"
4419 // if a fixed underlying type is allowed.
4420 ColonProtectionRAIIObject X(*this, AllowDeclaration);
4421
4422 CXXScopeSpec Spec;
4423 if (ParseOptionalCXXScopeSpecifier(Spec, nullptr,
4424 /*EnteringContext=*/true))
4425 return;
4426
4427 if (Spec.isSet() && Tok.isNot(tok::identifier)) {
4428 Diag(Tok, diag::err_expected) << tok::identifier;
4429 if (Tok.isNot(tok::l_brace)) {
4430 // Has no name and is not a definition.
4431 // Skip the rest of this declarator, up until the comma or semicolon.
4432 SkipUntil(tok::comma, StopAtSemi);
4433 return;
4434 }
4435 }
4436
4437 SS = Spec;
4438 }
4439
4440 // Must have either 'enum name' or 'enum {...}'.
4441 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::l_brace) &&
4442 !(AllowDeclaration && Tok.is(tok::colon))) {
4443 Diag(Tok, diag::err_expected_either) << tok::identifier << tok::l_brace;
4444
4445 // Skip the rest of this declarator, up until the comma or semicolon.
4446 SkipUntil(tok::comma, StopAtSemi);
4447 return;
4448 }
4449
4450 // If an identifier is present, consume and remember it.
4451 IdentifierInfo *Name = nullptr;
4452 SourceLocation NameLoc;
4453 if (Tok.is(tok::identifier)) {
4454 Name = Tok.getIdentifierInfo();
4455 NameLoc = ConsumeToken();
4456 }
4457
4458 if (!Name && ScopedEnumKWLoc.isValid()) {
4459 // C++0x 7.2p2: The optional identifier shall not be omitted in the
4460 // declaration of a scoped enumeration.
4461 Diag(Tok, diag::err_scoped_enum_missing_identifier);
4462 ScopedEnumKWLoc = SourceLocation();
4463 IsScopedUsingClassTag = false;
4464 }
4465
4466 // Okay, end the suppression area. We'll decide whether to emit the
4467 // diagnostics in a second.
4468 if (shouldDelayDiagsInTag)
4469 diagsFromTag.done();
4470
4471 TypeResult BaseType;
4472
4473 // Parse the fixed underlying type.
4474 bool CanBeBitfield = getCurScope()->getFlags() & Scope::ClassScope;
4475 if (AllowDeclaration && Tok.is(tok::colon)) {
4476 bool PossibleBitfield = false;
4477 if (CanBeBitfield) {
4478 // If we're in class scope, this can either be an enum declaration with
4479 // an underlying type, or a declaration of a bitfield member. We try to
4480 // use a simple disambiguation scheme first to catch the common cases
4481 // (integer literal, sizeof); if it's still ambiguous, we then consider
4482 // anything that's a simple-type-specifier followed by '(' as an
4483 // expression. This suffices because function types are not valid
4484 // underlying types anyway.
4485 EnterExpressionEvaluationContext Unevaluated(
4486 Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
4487 TPResult TPR = isExpressionOrTypeSpecifierSimple(NextToken().getKind());
4488 // If the next token starts an expression, we know we're parsing a
4489 // bit-field. This is the common case.
4490 if (TPR == TPResult::True)
4491 PossibleBitfield = true;
4492 // If the next token starts a type-specifier-seq, it may be either a
4493 // a fixed underlying type or the start of a function-style cast in C++;
4494 // lookahead one more token to see if it's obvious that we have a
4495 // fixed underlying type.
4496 else if (TPR == TPResult::False &&
4497 GetLookAheadToken(2).getKind() == tok::semi) {
4498 // Consume the ':'.
4499 ConsumeToken();
4500 } else {
4501 // We have the start of a type-specifier-seq, so we have to perform
4502 // tentative parsing to determine whether we have an expression or a
4503 // type.
4504 TentativeParsingAction TPA(*this);
4505
4506 // Consume the ':'.
4507 ConsumeToken();
4508
4509 // If we see a type specifier followed by an open-brace, we have an
4510 // ambiguity between an underlying type and a C++11 braced
4511 // function-style cast. Resolve this by always treating it as an
4512 // underlying type.
4513 // FIXME: The standard is not entirely clear on how to disambiguate in
4514 // this case.
4515 if ((getLangOpts().CPlusPlus &&
4516 isCXXDeclarationSpecifier(TPResult::True) != TPResult::True) ||
4517 (!getLangOpts().CPlusPlus && !isDeclarationSpecifier(true))) {
4518 // We'll parse this as a bitfield later.
4519 PossibleBitfield = true;
4520 TPA.Revert();
4521 } else {
4522 // We have a type-specifier-seq.
4523 TPA.Commit();
4524 }
4525 }
4526 } else {
4527 // Consume the ':'.
4528 ConsumeToken();
4529 }
4530
4531 if (!PossibleBitfield) {
4532 SourceRange Range;
4533 BaseType = ParseTypeName(&Range);
4534
4535 if (!getLangOpts().ObjC) {
4536 if (getLangOpts().CPlusPlus11)
4537 Diag(StartLoc, diag::warn_cxx98_compat_enum_fixed_underlying_type);
4538 else if (getLangOpts().CPlusPlus)
4539 Diag(StartLoc, diag::ext_cxx11_enum_fixed_underlying_type);
4540 else if (getLangOpts().MicrosoftExt)
4541 Diag(StartLoc, diag::ext_ms_c_enum_fixed_underlying_type);
4542 else
4543 Diag(StartLoc, diag::ext_clang_c_enum_fixed_underlying_type);
4544 }
4545 }
4546 }
4547
4548 // There are four options here. If we have 'friend enum foo;' then this is a
4549 // friend declaration, and cannot have an accompanying definition. If we have
4550 // 'enum foo;', then this is a forward declaration. If we have
4551 // 'enum foo {...' then this is a definition. Otherwise we have something
4552 // like 'enum foo xyz', a reference.
4553 //
4554 // This is needed to handle stuff like this right (C99 6.7.2.3p11):
4555 // enum foo {..}; void bar() { enum foo; } <- new foo in bar.
4556 // enum foo {..}; void bar() { enum foo x; } <- use of old foo.
4557 //
4558 Sema::TagUseKind TUK;
4559 if (!AllowDeclaration) {
4560 TUK = Sema::TUK_Reference;
4561 } else if (Tok.is(tok::l_brace)) {
4562 if (DS.isFriendSpecified()) {
4563 Diag(Tok.getLocation(), diag::err_friend_decl_defines_type)
4564 << SourceRange(DS.getFriendSpecLoc());
4565 ConsumeBrace();
4566 SkipUntil(tok::r_brace, StopAtSemi);
4567 TUK = Sema::TUK_Friend;
4568 } else {
4569 TUK = Sema::TUK_Definition;
4570 }
4571 } else if (!isTypeSpecifier(DSC) &&
4572 (Tok.is(tok::semi) ||
4573 (Tok.isAtStartOfLine() &&
4574 !isValidAfterTypeSpecifier(CanBeBitfield)))) {
4575 TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration;
4576 if (Tok.isNot(tok::semi)) {
4577 // A semicolon was missing after this declaration. Diagnose and recover.
4578 ExpectAndConsume(tok::semi, diag::err_expected_after, "enum");
4579 PP.EnterToken(Tok, /*IsReinject=*/true);
4580 Tok.setKind(tok::semi);
4581 }
4582 } else {
4583 TUK = Sema::TUK_Reference;
4584 }
4585
4586 // If this is an elaborated type specifier, and we delayed
4587 // diagnostics before, just merge them into the current pool.
4588 if (TUK == Sema::TUK_Reference && shouldDelayDiagsInTag) {
4589 diagsFromTag.redelay();
4590 }
4591
4592 MultiTemplateParamsArg TParams;
4593 if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate &&
4594 TUK != Sema::TUK_Reference) {
4595 if (!getLangOpts().CPlusPlus11 || !SS.isSet()) {
4596 // Skip the rest of this declarator, up until the comma or semicolon.
4597 Diag(Tok, diag::err_enum_template);
4598 SkipUntil(tok::comma, StopAtSemi);
4599 return;
4600 }
4601
4602 if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
4603 // Enumerations can't be explicitly instantiated.
4604 DS.SetTypeSpecError();
4605 Diag(StartLoc, diag::err_explicit_instantiation_enum);
4606 return;
4607 }
4608
4609 assert(TemplateInfo.TemplateParams && "no template parameters");
4610 TParams = MultiTemplateParamsArg(TemplateInfo.TemplateParams->data(),
4611 TemplateInfo.TemplateParams->size());
4612 }
4613
4614 if (TUK == Sema::TUK_Reference)
4615 ProhibitAttributes(attrs);
4616
4617 if (!Name && TUK != Sema::TUK_Definition) {
4618 Diag(Tok, diag::err_enumerator_unnamed_no_def);
4619
4620 // Skip the rest of this declarator, up until the comma or semicolon.
4621 SkipUntil(tok::comma, StopAtSemi);
4622 return;
4623 }
4624
4625 stripTypeAttributesOffDeclSpec(attrs, DS, TUK);
4626
4627 Sema::SkipBodyInfo SkipBody;
4628 if (!Name && TUK == Sema::TUK_Definition && Tok.is(tok::l_brace) &&
4629 NextToken().is(tok::identifier))
4630 SkipBody = Actions.shouldSkipAnonEnumBody(getCurScope(),
4631 NextToken().getIdentifierInfo(),
4632 NextToken().getLocation());
4633
4634 bool Owned = false;
4635 bool IsDependent = false;
4636 const char *PrevSpec = nullptr;
4637 unsigned DiagID;
4638 Decl *TagDecl = Actions.ActOnTag(
4639 getCurScope(), DeclSpec::TST_enum, TUK, StartLoc, SS, Name, NameLoc,
4640 attrs, AS, DS.getModulePrivateSpecLoc(), TParams, Owned, IsDependent,
4641 ScopedEnumKWLoc, IsScopedUsingClassTag, BaseType,
4642 DSC == DeclSpecContext::DSC_type_specifier,
4643 DSC == DeclSpecContext::DSC_template_param ||
4644 DSC == DeclSpecContext::DSC_template_type_arg,
4645 &SkipBody);
4646
4647 if (SkipBody.ShouldSkip) {
4648 assert(TUK == Sema::TUK_Definition && "can only skip a definition");
4649
4650 BalancedDelimiterTracker T(*this, tok::l_brace);
4651 T.consumeOpen();
4652 T.skipToEnd();
4653
4654 if (DS.SetTypeSpecType(DeclSpec::TST_enum, StartLoc,
4655 NameLoc.isValid() ? NameLoc : StartLoc,
4656 PrevSpec, DiagID, TagDecl, Owned,
4657 Actions.getASTContext().getPrintingPolicy()))
4658 Diag(StartLoc, DiagID) << PrevSpec;
4659 return;
4660 }
4661
4662 if (IsDependent) {
4663 // This enum has a dependent nested-name-specifier. Handle it as a
4664 // dependent tag.
4665 if (!Name) {
4666 DS.SetTypeSpecError();
4667 Diag(Tok, diag::err_expected_type_name_after_typename);
4668 return;
4669 }
4670
4671 TypeResult Type = Actions.ActOnDependentTag(
4672 getCurScope(), DeclSpec::TST_enum, TUK, SS, Name, StartLoc, NameLoc);
4673 if (Type.isInvalid()) {
4674 DS.SetTypeSpecError();
4675 return;
4676 }
4677
4678 if (DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc,
4679 NameLoc.isValid() ? NameLoc : StartLoc,
4680 PrevSpec, DiagID, Type.get(),
4681 Actions.getASTContext().getPrintingPolicy()))
4682 Diag(StartLoc, DiagID) << PrevSpec;
4683
4684 return;
4685 }
4686
4687 if (!TagDecl) {
4688 // The action failed to produce an enumeration tag. If this is a
4689 // definition, consume the entire definition.
4690 if (Tok.is(tok::l_brace) && TUK != Sema::TUK_Reference) {
4691 ConsumeBrace();
4692 SkipUntil(tok::r_brace, StopAtSemi);
4693 }
4694
4695 DS.SetTypeSpecError();
4696 return;
4697 }
4698
4699 if (Tok.is(tok::l_brace) && TUK != Sema::TUK_Reference) {
4700 Decl *D = SkipBody.CheckSameAsPrevious ? SkipBody.New : TagDecl;
4701 ParseEnumBody(StartLoc, D);
4702 if (SkipBody.CheckSameAsPrevious &&
4703 !Actions.ActOnDuplicateDefinition(DS, TagDecl, SkipBody)) {
4704 DS.SetTypeSpecError();
4705 return;
4706 }
4707 }
4708
4709 if (DS.SetTypeSpecType(DeclSpec::TST_enum, StartLoc,
4710 NameLoc.isValid() ? NameLoc : StartLoc,
4711 PrevSpec, DiagID, TagDecl, Owned,
4712 Actions.getASTContext().getPrintingPolicy()))
4713 Diag(StartLoc, DiagID) << PrevSpec;
4714 }
4715
4716 /// ParseEnumBody - Parse a {} enclosed enumerator-list.
4717 /// enumerator-list:
4718 /// enumerator
4719 /// enumerator-list ',' enumerator
4720 /// enumerator:
4721 /// enumeration-constant attributes[opt]
4722 /// enumeration-constant attributes[opt] '=' constant-expression
4723 /// enumeration-constant:
4724 /// identifier
4725 ///
4726 void Parser::ParseEnumBody(SourceLocation StartLoc, Decl *EnumDecl) {
4727 // Enter the scope of the enum body and start the definition.
4728 ParseScope EnumScope(this, Scope::DeclScope | Scope::EnumScope);
4729 Actions.ActOnTagStartDefinition(getCurScope(), EnumDecl);
4730
4731 BalancedDelimiterTracker T(*this, tok::l_brace);
4732 T.consumeOpen();
4733
4734 // C does not allow an empty enumerator-list, C++ does [dcl.enum].
4735 if (Tok.is(tok::r_brace) && !getLangOpts().CPlusPlus)
4736 Diag(Tok, diag::err_empty_enum);
4737
4738 SmallVector<Decl *, 32> EnumConstantDecls;
4739 SmallVector<SuppressAccessChecks, 32> EnumAvailabilityDiags;
4740
4741 Decl *LastEnumConstDecl = nullptr;
4742
4743 // Parse the enumerator-list.
4744 while (Tok.isNot(tok::r_brace)) {
4745 // Parse enumerator. If failed, try skipping till the start of the next
4746 // enumerator definition.
4747 if (Tok.isNot(tok::identifier)) {
4748 Diag(Tok.getLocation(), diag::err_expected) << tok::identifier;
4749 if (SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch) &&
4750 TryConsumeToken(tok::comma))
4751 continue;
4752 break;
4753 }
4754 IdentifierInfo *Ident = Tok.getIdentifierInfo();
4755 SourceLocation IdentLoc = ConsumeToken();
4756
4757 // If attributes exist after the enumerator, parse them.
4758 ParsedAttributesWithRange attrs(AttrFactory);
4759 MaybeParseGNUAttributes(attrs);
4760 ProhibitAttributes(attrs); // GNU-style attributes are prohibited.
4761 if (standardAttributesAllowed() && isCXX11AttributeSpecifier()) {
4762 if (getLangOpts().CPlusPlus)
4763 Diag(Tok.getLocation(), getLangOpts().CPlusPlus17
4764 ? diag::warn_cxx14_compat_ns_enum_attribute
4765 : diag::ext_ns_enum_attribute)
4766 << 1 /*enumerator*/;
4767 ParseCXX11Attributes(attrs);
4768 }
4769
4770 SourceLocation EqualLoc;
4771 ExprResult AssignedVal;
4772 EnumAvailabilityDiags.emplace_back(*this);
4773
4774 EnterExpressionEvaluationContext ConstantEvaluated(
4775 Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
4776 if (TryConsumeToken(tok::equal, EqualLoc)) {
4777 AssignedVal = ParseConstantExpressionInExprEvalContext();
4778 if (AssignedVal.isInvalid())
4779 SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch);
4780 }
4781
4782 // Install the enumerator constant into EnumDecl.
4783 Decl *EnumConstDecl = Actions.ActOnEnumConstant(
4784 getCurScope(), EnumDecl, LastEnumConstDecl, IdentLoc, Ident, attrs,
4785 EqualLoc, AssignedVal.get());
4786 EnumAvailabilityDiags.back().done();
4787
4788 EnumConstantDecls.push_back(EnumConstDecl);
4789 LastEnumConstDecl = EnumConstDecl;
4790
4791 if (Tok.is(tok::identifier)) {
4792 // We're missing a comma between enumerators.
4793 SourceLocation Loc = getEndOfPreviousToken();
4794 Diag(Loc, diag::err_enumerator_list_missing_comma)
4795 << FixItHint::CreateInsertion(Loc, ", ");
4796 continue;
4797 }
4798
4799 // Emumerator definition must be finished, only comma or r_brace are
4800 // allowed here.
4801 SourceLocation CommaLoc;
4802 if (Tok.isNot(tok::r_brace) && !TryConsumeToken(tok::comma, CommaLoc)) {
4803 if (EqualLoc.isValid())
4804 Diag(Tok.getLocation(), diag::err_expected_either) << tok::r_brace
4805 << tok::comma;
4806 else
4807 Diag(Tok.getLocation(), diag::err_expected_end_of_enumerator);
4808 if (SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch)) {
4809 if (TryConsumeToken(tok::comma, CommaLoc))
4810 continue;
4811 } else {
4812 break;
4813 }
4814 }
4815
4816 // If comma is followed by r_brace, emit appropriate warning.
4817 if (Tok.is(tok::r_brace) && CommaLoc.isValid()) {
4818 if (!getLangOpts().C99 && !getLangOpts().CPlusPlus11)
4819 Diag(CommaLoc, getLangOpts().CPlusPlus ?
4820 diag::ext_enumerator_list_comma_cxx :
4821 diag::ext_enumerator_list_comma_c)
4822 << FixItHint::CreateRemoval(CommaLoc);
4823 else if (getLangOpts().CPlusPlus11)
4824 Diag(CommaLoc, diag::warn_cxx98_compat_enumerator_list_comma)
4825 << FixItHint::CreateRemoval(CommaLoc);
4826 break;
4827 }
4828 }
4829
4830 // Eat the }.
4831 T.consumeClose();
4832
4833 // If attributes exist after the identifier list, parse them.
4834 ParsedAttributes attrs(AttrFactory);
4835 MaybeParseGNUAttributes(attrs);
4836
4837 Actions.ActOnEnumBody(StartLoc, T.getRange(), EnumDecl, EnumConstantDecls,
4838 getCurScope(), attrs);
4839
4840 // Now handle enum constant availability diagnostics.
4841 assert(EnumConstantDecls.size() == EnumAvailabilityDiags.size());
4842 for (size_t i = 0, e = EnumConstantDecls.size(); i != e; ++i) {
4843 ParsingDeclRAIIObject PD(*this, ParsingDeclRAIIObject::NoParent);
4844 EnumAvailabilityDiags[i].redelay();
4845 PD.complete(EnumConstantDecls[i]);
4846 }
4847
4848 EnumScope.Exit();
4849 Actions.ActOnTagFinishDefinition(getCurScope(), EnumDecl, T.getRange());
4850
4851 // The next token must be valid after an enum definition. If not, a ';'
4852 // was probably forgotten.
4853 bool CanBeBitfield = getCurScope()->getFlags() & Scope::ClassScope;
4854 if (!isValidAfterTypeSpecifier(CanBeBitfield)) {
4855 ExpectAndConsume(tok::semi, diag::err_expected_after, "enum");
4856 // Push this token back into the preprocessor and change our current token
4857 // to ';' so that the rest of the code recovers as though there were an
4858 // ';' after the definition.
4859 PP.EnterToken(Tok, /*IsReinject=*/true);
4860 Tok.setKind(tok::semi);
4861 }
4862 }
4863
4864 /// isKnownToBeTypeSpecifier - Return true if we know that the specified token
4865 /// is definitely a type-specifier. Return false if it isn't part of a type
4866 /// specifier or if we're not sure.
4867 bool Parser::isKnownToBeTypeSpecifier(const Token &Tok) const {
4868 switch (Tok.getKind()) {
4869 default: return false;
4870 // type-specifiers
4871 case tok::kw_short:
4872 case tok::kw_long:
4873 case tok::kw___int64:
4874 case tok::kw___int128:
4875 case tok::kw_signed:
4876 case tok::kw_unsigned:
4877 case tok::kw__Complex:
4878 case tok::kw__Imaginary:
4879 case tok::kw_void:
4880 case tok::kw_char:
4881 case tok::kw_wchar_t:
4882 case tok::kw_char8_t:
4883 case tok::kw_char16_t:
4884 case tok::kw_char32_t:
4885 case tok::kw_int:
4886 case tok::kw_half:
4887 case tok::kw_float:
4888 case tok::kw_double:
4889 case tok::kw__Accum:
4890 case tok::kw__Fract:
4891 case tok::kw__Float16:
4892 case tok::kw___float128:
4893 case tok::kw_bool:
4894 case tok::kw__Bool:
4895 case tok::kw__Decimal32:
4896 case tok::kw__Decimal64:
4897 case tok::kw__Decimal128:
4898 case tok::kw___vector:
4899 #define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
4900 #include "clang/Basic/OpenCLImageTypes.def"
4901
4902 // struct-or-union-specifier (C99) or class-specifier (C++)
4903 case tok::kw_class:
4904 case tok::kw_struct:
4905 case tok::kw___interface:
4906 case tok::kw_union:
4907 // enum-specifier
4908 case tok::kw_enum:
4909
4910 // typedef-name
4911 case tok::annot_typename:
4912 return true;
4913 }
4914 }
4915
4916 /// isTypeSpecifierQualifier - Return true if the current token could be the
4917 /// start of a specifier-qualifier-list.
4918 bool Parser::isTypeSpecifierQualifier() {
4919 switch (Tok.getKind()) {
4920 default: return false;
4921
4922 case tok::identifier: // foo::bar
4923 if (TryAltiVecVectorToken())
4924 return true;
4925 LLVM_FALLTHROUGH;
4926 case tok::kw_typename: // typename T::type
4927 // Annotate typenames and C++ scope specifiers. If we get one, just
4928 // recurse to handle whatever we get.
4929 if (TryAnnotateTypeOrScopeToken())
4930 return true;
4931 if (Tok.is(tok::identifier))
4932 return false;
4933 return isTypeSpecifierQualifier();
4934
4935 case tok::coloncolon: // ::foo::bar
4936 if (NextToken().is(tok::kw_new) || // ::new
4937 NextToken().is(tok::kw_delete)) // ::delete
4938 return false;
4939
4940 if (TryAnnotateTypeOrScopeToken())
4941 return true;
4942 return isTypeSpecifierQualifier();
4943
4944 // GNU attributes support.
4945 case tok::kw___attribute:
4946 // GNU typeof support.
4947 case tok::kw_typeof:
4948
4949 // type-specifiers
4950 case tok::kw_short:
4951 case tok::kw_long:
4952 case tok::kw___int64:
4953 case tok::kw___int128:
4954 case tok::kw_signed:
4955 case tok::kw_unsigned:
4956 case tok::kw__Complex:
4957 case tok::kw__Imaginary:
4958 case tok::kw_void:
4959 case tok::kw_char:
4960 case tok::kw_wchar_t:
4961 case tok::kw_char8_t:
4962 case tok::kw_char16_t:
4963 case tok::kw_char32_t:
4964 case tok::kw_int:
4965 case tok::kw_half:
4966 case tok::kw_float:
4967 case tok::kw_double:
4968 case tok::kw__Accum:
4969 case tok::kw__Fract:
4970 case tok::kw__Float16:
4971 case tok::kw___float128:
4972 case tok::kw_bool:
4973 case tok::kw__Bool:
4974 case tok::kw__Decimal32:
4975 case tok::kw__Decimal64:
4976 case tok::kw__Decimal128:
4977 case tok::kw___vector:
4978 #define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
4979 #include "clang/Basic/OpenCLImageTypes.def"
4980
4981 // struct-or-union-specifier (C99) or class-specifier (C++)
4982 case tok::kw_class:
4983 case tok::kw_struct:
4984 case tok::kw___interface:
4985 case tok::kw_union:
4986 // enum-specifier
4987 case tok::kw_enum:
4988
4989 // type-qualifier
4990 case tok::kw_const:
4991 case tok::kw_volatile:
4992 case tok::kw_restrict:
4993 case tok::kw__Sat:
4994
4995 // Debugger support.
4996 case tok::kw___unknown_anytype:
4997
4998 // typedef-name
4999 case tok::annot_typename:
5000 return true;
5001
5002 // GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
5003 case tok::less:
5004 return getLangOpts().ObjC;
5005
5006 case tok::kw___cdecl:
5007 case tok::kw___stdcall:
5008 case tok::kw___fastcall:
5009 case tok::kw___thiscall:
5010 case tok::kw___regcall:
5011 case tok::kw___vectorcall:
5012 case tok::kw___w64:
5013 case tok::kw___ptr64:
5014 case tok::kw___ptr32:
5015 case tok::kw___pascal:
5016 case tok::kw___unaligned:
5017
5018 case tok::kw__Nonnull:
5019 case tok::kw__Nullable:
5020 case tok::kw__Null_unspecified:
5021
5022 case tok::kw___kindof:
5023
5024 case tok::kw___private:
5025 case tok::kw___local:
5026 case tok::kw___global:
5027 case tok::kw___constant:
5028 case tok::kw___generic:
5029 case tok::kw___read_only:
5030 case tok::kw___read_write:
5031 case tok::kw___write_only:
5032 return true;
5033
5034 case tok::kw_private:
5035 return getLangOpts().OpenCL;
5036
5037 // C11 _Atomic
5038 case tok::kw__Atomic:
5039 return true;
5040 }
5041 }
5042
5043 /// isDeclarationSpecifier() - Return true if the current token is part of a
5044 /// declaration specifier.
5045 ///
5046 /// \param DisambiguatingWithExpression True to indicate that the purpose of
5047 /// this check is to disambiguate between an expression and a declaration.
5048 bool Parser::isDeclarationSpecifier(bool DisambiguatingWithExpression) {
5049 switch (Tok.getKind()) {
5050 default: return false;
5051
5052 case tok::kw_pipe:
5053 return (getLangOpts().OpenCL && getLangOpts().OpenCLVersion >= 200) ||
5054 getLangOpts().OpenCLCPlusPlus;
5055
5056 case tok::identifier: // foo::bar
5057 // Unfortunate hack to support "Class.factoryMethod" notation.
5058 if (getLangOpts().ObjC && NextToken().is(tok::period))
5059 return false;
5060 if (TryAltiVecVectorToken())
5061 return true;
5062 LLVM_FALLTHROUGH;
5063 case tok::kw_decltype: // decltype(T())::type
5064 case tok::kw_typename: // typename T::type
5065 // Annotate typenames and C++ scope specifiers. If we get one, just
5066 // recurse to handle whatever we get.
5067 if (TryAnnotateTypeOrScopeToken())
5068 return true;
5069 if (TryAnnotateTypeConstraint())
5070 return true;
5071 if (Tok.is(tok::identifier))
5072 return false;
5073
5074 // If we're in Objective-C and we have an Objective-C class type followed
5075 // by an identifier and then either ':' or ']', in a place where an
5076 // expression is permitted, then this is probably a class message send
5077 // missing the initial '['. In this case, we won't consider this to be
5078 // the start of a declaration.
5079 if (DisambiguatingWithExpression &&
5080 isStartOfObjCClassMessageMissingOpenBracket())
5081 return false;
5082
5083 return isDeclarationSpecifier();
5084
5085 case tok::coloncolon: // ::foo::bar
5086 if (NextToken().is(tok::kw_new) || // ::new
5087 NextToken().is(tok::kw_delete)) // ::delete
5088 return false;
5089
5090 // Annotate typenames and C++ scope specifiers. If we get one, just
5091 // recurse to handle whatever we get.
5092 if (TryAnnotateTypeOrScopeToken())
5093 return true;
5094 return isDeclarationSpecifier();
5095
5096 // storage-class-specifier
5097 case tok::kw_typedef:
5098 case tok::kw_extern:
5099 case tok::kw___private_extern__:
5100 case tok::kw_static:
5101 case tok::kw_auto:
5102 case tok::kw___auto_type:
5103 case tok::kw_register:
5104 case tok::kw___thread:
5105 case tok::kw_thread_local:
5106 case tok::kw__Thread_local:
5107
5108 // Modules
5109 case tok::kw___module_private__:
5110
5111 // Debugger support
5112 case tok::kw___unknown_anytype:
5113
5114 // type-specifiers
5115 case tok::kw_short:
5116 case tok::kw_long:
5117 case tok::kw___int64:
5118 case tok::kw___int128:
5119 case tok::kw_signed:
5120 case tok::kw_unsigned:
5121 case tok::kw__Complex:
5122 case tok::kw__Imaginary:
5123 case tok::kw_void:
5124 case tok::kw_char:
5125 case tok::kw_wchar_t:
5126 case tok::kw_char8_t:
5127 case tok::kw_char16_t:
5128 case tok::kw_char32_t:
5129
5130 case tok::kw_int:
5131 case tok::kw_half:
5132 case tok::kw_float:
5133 case tok::kw_double:
5134 case tok::kw__Accum:
5135 case tok::kw__Fract:
5136 case tok::kw__Float16:
5137 case tok::kw___float128:
5138 case tok::kw_bool:
5139 case tok::kw__Bool:
5140 case tok::kw__Decimal32:
5141 case tok::kw__Decimal64:
5142 case tok::kw__Decimal128:
5143 case tok::kw___vector:
5144
5145 // struct-or-union-specifier (C99) or class-specifier (C++)
5146 case tok::kw_class:
5147 case tok::kw_struct:
5148 case tok::kw_union:
5149 case tok::kw___interface:
5150 // enum-specifier
5151 case tok::kw_enum:
5152
5153 // type-qualifier
5154 case tok::kw_const:
5155 case tok::kw_volatile:
5156 case tok::kw_restrict:
5157 case tok::kw__Sat:
5158
5159 // function-specifier
5160 case tok::kw_inline:
5161 case tok::kw_virtual:
5162 case tok::kw_explicit:
5163 case tok::kw__Noreturn:
5164
5165 // alignment-specifier
5166 case tok::kw__Alignas:
5167
5168 // friend keyword.
5169 case tok::kw_friend:
5170
5171 // static_assert-declaration
5172 case tok::kw__Static_assert:
5173
5174 // GNU typeof support.
5175 case tok::kw_typeof:
5176
5177 // GNU attributes.
5178 case tok::kw___attribute:
5179
5180 // C++11 decltype and constexpr.
5181 case tok::annot_decltype:
5182 case tok::kw_constexpr:
5183
5184 // C++20 consteval and constinit.
5185 case tok::kw_consteval:
5186 case tok::kw_constinit:
5187
5188 // C11 _Atomic
5189 case tok::kw__Atomic:
5190 return true;
5191
5192 // GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
5193 case tok::less:
5194 return getLangOpts().ObjC;
5195
5196 // typedef-name
5197 case tok::annot_typename:
5198 return !DisambiguatingWithExpression ||
5199 !isStartOfObjCClassMessageMissingOpenBracket();
5200
5201 // placeholder-type-specifier
5202 case tok::annot_template_id: {
5203 return isTypeConstraintAnnotation() &&
5204 (NextToken().is(tok::kw_auto) || NextToken().is(tok::kw_decltype));
5205 }
5206 case tok::annot_cxxscope:
5207 if (NextToken().is(tok::identifier) && TryAnnotateTypeConstraint())
5208 return true;
5209 return isTypeConstraintAnnotation() &&
5210 GetLookAheadToken(2).isOneOf(tok::kw_auto, tok::kw_decltype);
5211 case tok::kw___declspec:
5212 case tok::kw___cdecl:
5213 case tok::kw___stdcall:
5214 case tok::kw___fastcall:
5215 case tok::kw___thiscall:
5216 case tok::kw___regcall:
5217 case tok::kw___vectorcall:
5218 case tok::kw___w64:
5219 case tok::kw___sptr:
5220 case tok::kw___uptr:
5221 case tok::kw___ptr64:
5222 case tok::kw___ptr32:
5223 case tok::kw___forceinline:
5224 case tok::kw___pascal:
5225 case tok::kw___unaligned:
5226
5227 case tok::kw__Nonnull:
5228 case tok::kw__Nullable:
5229 case tok::kw__Null_unspecified:
5230
5231 case tok::kw___kindof:
5232
5233 case tok::kw___private:
5234 case tok::kw___local:
5235 case tok::kw___global:
5236 case tok::kw___constant:
5237 case tok::kw___generic:
5238 case tok::kw___read_only:
5239 case tok::kw___read_write:
5240 case tok::kw___write_only:
5241 #define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
5242 #include "clang/Basic/OpenCLImageTypes.def"
5243
5244 return true;
5245
5246 case tok::kw_private:
5247 return getLangOpts().OpenCL;
5248 }
5249 }
5250
5251 bool Parser::isConstructorDeclarator(bool IsUnqualified, bool DeductionGuide) {
5252 TentativeParsingAction TPA(*this);
5253
5254 // Parse the C++ scope specifier.
5255 CXXScopeSpec SS;
5256 if (ParseOptionalCXXScopeSpecifier(SS, nullptr,
5257 /*EnteringContext=*/true)) {
5258 TPA.Revert();
5259 return false;
5260 }
5261
5262 // Parse the constructor name.
5263 if (Tok.is(tok::identifier)) {
5264 // We already know that we have a constructor name; just consume
5265 // the token.
5266 ConsumeToken();
5267 } else if (Tok.is(tok::annot_template_id)) {
5268 ConsumeAnnotationToken();
5269 } else {
5270 TPA.Revert();
5271 return false;
5272 }
5273
5274 // There may be attributes here, appertaining to the constructor name or type
5275 // we just stepped past.
5276 SkipCXX11Attributes();
5277
5278 // Current class name must be followed by a left parenthesis.
5279 if (Tok.isNot(tok::l_paren)) {
5280 TPA.Revert();
5281 return false;
5282 }
5283 ConsumeParen();
5284
5285 // A right parenthesis, or ellipsis followed by a right parenthesis signals
5286 // that we have a constructor.
5287 if (Tok.is(tok::r_paren) ||
5288 (Tok.is(tok::ellipsis) && NextToken().is(tok::r_paren))) {
5289 TPA.Revert();
5290 return true;
5291 }
5292
5293 // A C++11 attribute here signals that we have a constructor, and is an
5294 // attribute on the first constructor parameter.
5295 if (getLangOpts().CPlusPlus11 &&
5296 isCXX11AttributeSpecifier(/*Disambiguate*/ false,
5297 /*OuterMightBeMessageSend*/ true)) {
5298 TPA.Revert();
5299 return true;
5300 }
5301
5302 // If we need to, enter the specified scope.
5303 DeclaratorScopeObj DeclScopeObj(*this, SS);
5304 if (SS.isSet() && Actions.ShouldEnterDeclaratorScope(getCurScope(), SS))
5305 DeclScopeObj.EnterDeclaratorScope();
5306
5307 // Optionally skip Microsoft attributes.
5308 ParsedAttributes Attrs(AttrFactory);
5309 MaybeParseMicrosoftAttributes(Attrs);
5310
5311 // Check whether the next token(s) are part of a declaration
5312 // specifier, in which case we have the start of a parameter and,
5313 // therefore, we know that this is a constructor.
5314 bool IsConstructor = false;
5315 if (isDeclarationSpecifier())
5316 IsConstructor = true;
5317 else if (Tok.is(tok::identifier) ||
5318 (Tok.is(tok::annot_cxxscope) && NextToken().is(tok::identifier))) {
5319 // We've seen "C ( X" or "C ( X::Y", but "X" / "X::Y" is not a type.
5320 // This might be a parenthesized member name, but is more likely to
5321 // be a constructor declaration with an invalid argument type. Keep
5322 // looking.
5323 if (Tok.is(tok::annot_cxxscope))
5324 ConsumeAnnotationToken();
5325 ConsumeToken();
5326
5327 // If this is not a constructor, we must be parsing a declarator,
5328 // which must have one of the following syntactic forms (see the
5329 // grammar extract at the start of ParseDirectDeclarator):
5330 switch (Tok.getKind()) {
5331 case tok::l_paren:
5332 // C(X ( int));
5333 case tok::l_square:
5334 // C(X [ 5]);
5335 // C(X [ [attribute]]);
5336 case tok::coloncolon:
5337 // C(X :: Y);
5338 // C(X :: *p);
5339 // Assume this isn't a constructor, rather than assuming it's a
5340 // constructor with an unnamed parameter of an ill-formed type.
5341 break;
5342
5343 case tok::r_paren:
5344 // C(X )
5345
5346 // Skip past the right-paren and any following attributes to get to
5347 // the function body or trailing-return-type.
5348 ConsumeParen();
5349 SkipCXX11Attributes();
5350
5351 if (DeductionGuide) {
5352 // C(X) -> ... is a deduction guide.
5353 IsConstructor = Tok.is(tok::arrow);
5354 break;
5355 }
5356 if (Tok.is(tok::colon) || Tok.is(tok::kw_try)) {
5357 // Assume these were meant to be constructors:
5358 // C(X) : (the name of a bit-field cannot be parenthesized).
5359 // C(X) try (this is otherwise ill-formed).
5360 IsConstructor = true;
5361 }
5362 if (Tok.is(tok::semi) || Tok.is(tok::l_brace)) {
5363 // If we have a constructor name within the class definition,
5364 // assume these were meant to be constructors:
5365 // C(X) {
5366 // C(X) ;
5367 // ... because otherwise we would be declaring a non-static data
5368 // member that is ill-formed because it's of the same type as its
5369 // surrounding class.
5370 //
5371 // FIXME: We can actually do this whether or not the name is qualified,
5372 // because if it is qualified in this context it must be being used as
5373 // a constructor name.
5374 // currently, so we're somewhat conservative here.
5375 IsConstructor = IsUnqualified;
5376 }
5377 break;
5378
5379 default:
5380 IsConstructor = true;
5381 break;
5382 }
5383 }
5384
5385 TPA.Revert();
5386 return IsConstructor;
5387 }
5388
5389 /// ParseTypeQualifierListOpt
5390 /// type-qualifier-list: [C99 6.7.5]
5391 /// type-qualifier
5392 /// [vendor] attributes
5393 /// [ only if AttrReqs & AR_VendorAttributesParsed ]
5394 /// type-qualifier-list type-qualifier
5395 /// [vendor] type-qualifier-list attributes
5396 /// [ only if AttrReqs & AR_VendorAttributesParsed ]
5397 /// [C++0x] attribute-specifier[opt] is allowed before cv-qualifier-seq
5398 /// [ only if AttReqs & AR_CXX11AttributesParsed ]
5399 /// Note: vendor can be GNU, MS, etc and can be explicitly controlled via
5400 /// AttrRequirements bitmask values.
5401 void Parser::ParseTypeQualifierListOpt(
5402 DeclSpec &DS, unsigned AttrReqs, bool AtomicAllowed,
5403 bool IdentifierRequired,
5404 Optional<llvm::function_ref<void()>> CodeCompletionHandler) {
5405 if (standardAttributesAllowed() && (AttrReqs & AR_CXX11AttributesParsed) &&
5406 isCXX11AttributeSpecifier()) {
5407 ParsedAttributesWithRange attrs(AttrFactory);
5408 ParseCXX11Attributes(attrs);
5409 DS.takeAttributesFrom(attrs);
5410 }
5411
5412 SourceLocation EndLoc;
5413
5414 while (1) {
5415 bool isInvalid = false;
5416 const char *PrevSpec = nullptr;
5417 unsigned DiagID = 0;
5418 SourceLocation Loc = Tok.getLocation();
5419
5420 switch (Tok.getKind()) {
5421 case tok::code_completion:
5422 if (CodeCompletionHandler)
5423 (*CodeCompletionHandler)();
5424 else
5425 Actions.CodeCompleteTypeQualifiers(DS);
5426 return cutOffParsing();
5427
5428 case tok::kw_const:
5429 isInvalid = DS.SetTypeQual(DeclSpec::TQ_const , Loc, PrevSpec, DiagID,
5430 getLangOpts());
5431 break;
5432 case tok::kw_volatile:
5433 isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
5434 getLangOpts());
5435 break;
5436 case tok::kw_restrict:
5437 isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
5438 getLangOpts());
5439 break;
5440 case tok::kw__Atomic:
5441 if (!AtomicAllowed)
5442 goto DoneWithTypeQuals;
5443 if (!getLangOpts().C11)
5444 Diag(Tok, diag::ext_c11_feature) << Tok.getName();
5445 isInvalid = DS.SetTypeQual(DeclSpec::TQ_atomic, Loc, PrevSpec, DiagID,
5446 getLangOpts());
5447 break;
5448
5449 // OpenCL qualifiers:
5450 case tok::kw_private:
5451 if (!getLangOpts().OpenCL)
5452 goto DoneWithTypeQuals;
5453 LLVM_FALLTHROUGH;
5454 case tok::kw___private:
5455 case tok::kw___global:
5456 case tok::kw___local:
5457 case tok::kw___constant:
5458 case tok::kw___generic:
5459 case tok::kw___read_only:
5460 case tok::kw___write_only:
5461 case tok::kw___read_write:
5462 ParseOpenCLQualifiers(DS.getAttributes());
5463 break;
5464
5465 case tok::kw___unaligned:
5466 isInvalid = DS.SetTypeQual(DeclSpec::TQ_unaligned, Loc, PrevSpec, DiagID,
5467 getLangOpts());
5468 break;
5469 case tok::kw___uptr:
5470 // GNU libc headers in C mode use '__uptr' as an identifier which conflicts
5471 // with the MS modifier keyword.
5472 if ((AttrReqs & AR_DeclspecAttributesParsed) && !getLangOpts().CPlusPlus &&
5473 IdentifierRequired && DS.isEmpty() && NextToken().is(tok::semi)) {
5474 if (TryKeywordIdentFallback(false))
5475 continue;
5476 }
5477 LLVM_FALLTHROUGH;
5478 case tok::kw___sptr:
5479 case tok::kw___w64:
5480 case tok::kw___ptr64:
5481 case tok::kw___ptr32:
5482 case tok::kw___cdecl:
5483 case tok::kw___stdcall:
5484 case tok::kw___fastcall:
5485 case tok::kw___thiscall:
5486 case tok::kw___regcall:
5487 case tok::kw___vectorcall:
5488 if (AttrReqs & AR_DeclspecAttributesParsed) {
5489 ParseMicrosoftTypeAttributes(DS.getAttributes());
5490 continue;
5491 }
5492 goto DoneWithTypeQuals;
5493 case tok::kw___pascal:
5494 if (AttrReqs & AR_VendorAttributesParsed) {
5495 ParseBorlandTypeAttributes(DS.getAttributes());
5496 continue;
5497 }
5498 goto DoneWithTypeQuals;
5499
5500 // Nullability type specifiers.
5501 case tok::kw__Nonnull:
5502 case tok::kw__Nullable:
5503 case tok::kw__Null_unspecified:
5504 ParseNullabilityTypeSpecifiers(DS.getAttributes());
5505 continue;
5506
5507 // Objective-C 'kindof' types.
5508 case tok::kw___kindof:
5509 DS.getAttributes().addNew(Tok.getIdentifierInfo(), Loc, nullptr, Loc,
5510 nullptr, 0, ParsedAttr::AS_Keyword);
5511 (void)ConsumeToken();
5512 continue;
5513
5514 case tok::kw___attribute:
5515 if (AttrReqs & AR_GNUAttributesParsedAndRejected)
5516 // When GNU attributes are expressly forbidden, diagnose their usage.
5517 Diag(Tok, diag::err_attributes_not_allowed);
5518
5519 // Parse the attributes even if they are rejected to ensure that error
5520 // recovery is graceful.
5521 if (AttrReqs & AR_GNUAttributesParsed ||
5522 AttrReqs & AR_GNUAttributesParsedAndRejected) {
5523 ParseGNUAttributes(DS.getAttributes());
5524 continue; // do *not* consume the next token!
5525 }
5526 // otherwise, FALL THROUGH!
5527 LLVM_FALLTHROUGH;
5528 default:
5529 DoneWithTypeQuals:
5530 // If this is not a type-qualifier token, we're done reading type
5531 // qualifiers. First verify that DeclSpec's are consistent.
5532 DS.Finish(Actions, Actions.getASTContext().getPrintingPolicy());
5533 if (EndLoc.isValid())
5534 DS.SetRangeEnd(EndLoc);
5535 return;
5536 }
5537
5538 // If the specifier combination wasn't legal, issue a diagnostic.
5539 if (isInvalid) {
5540 assert(PrevSpec && "Method did not return previous specifier!");
5541 Diag(Tok, DiagID) << PrevSpec;
5542 }
5543 EndLoc = ConsumeToken();
5544 }
5545 }
5546
5547 /// ParseDeclarator - Parse and verify a newly-initialized declarator.
5548 ///
5549 void Parser::ParseDeclarator(Declarator &D) {
5550 /// This implements the 'declarator' production in the C grammar, then checks
5551 /// for well-formedness and issues diagnostics.
5552 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
5553 }
5554
5555 static bool isPtrOperatorToken(tok::TokenKind Kind, const LangOptions &Lang,
5556 DeclaratorContext TheContext) {
5557 if (Kind == tok::star || Kind == tok::caret)
5558 return true;
5559
5560 if (Kind == tok::kw_pipe &&
5561 ((Lang.OpenCL && Lang.OpenCLVersion >= 200) || Lang.OpenCLCPlusPlus))
5562 return true;
5563
5564 if (!Lang.CPlusPlus)
5565 return false;
5566
5567 if (Kind == tok::amp)
5568 return true;
5569
5570 // We parse rvalue refs in C++03, because otherwise the errors are scary.
5571 // But we must not parse them in conversion-type-ids and new-type-ids, since
5572 // those can be legitimately followed by a && operator.
5573 // (The same thing can in theory happen after a trailing-return-type, but
5574 // since those are a C++11 feature, there is no rejects-valid issue there.)
5575 if (Kind == tok::ampamp)
5576 return Lang.CPlusPlus11 ||
5577 (TheContext != DeclaratorContext::ConversionIdContext &&
5578 TheContext != DeclaratorContext::CXXNewContext);
5579
5580 return false;
5581 }
5582
5583 // Indicates whether the given declarator is a pipe declarator.
5584 static bool isPipeDeclerator(const Declarator &D) {
5585 const unsigned NumTypes = D.getNumTypeObjects();
5586
5587 for (unsigned Idx = 0; Idx != NumTypes; ++Idx)
5588 if (DeclaratorChunk::Pipe == D.getTypeObject(Idx).Kind)
5589 return true;
5590
5591 return false;
5592 }
5593
5594 /// ParseDeclaratorInternal - Parse a C or C++ declarator. The direct-declarator
5595 /// is parsed by the function passed to it. Pass null, and the direct-declarator
5596 /// isn't parsed at all, making this function effectively parse the C++
5597 /// ptr-operator production.
5598 ///
5599 /// If the grammar of this construct is extended, matching changes must also be
5600 /// made to TryParseDeclarator and MightBeDeclarator, and possibly to
5601 /// isConstructorDeclarator.
5602 ///
5603 /// declarator: [C99 6.7.5] [C++ 8p4, dcl.decl]
5604 /// [C] pointer[opt] direct-declarator
5605 /// [C++] direct-declarator
5606 /// [C++] ptr-operator declarator
5607 ///
5608 /// pointer: [C99 6.7.5]
5609 /// '*' type-qualifier-list[opt]
5610 /// '*' type-qualifier-list[opt] pointer
5611 ///
5612 /// ptr-operator:
5613 /// '*' cv-qualifier-seq[opt]
5614 /// '&'
5615 /// [C++0x] '&&'
5616 /// [GNU] '&' restrict[opt] attributes[opt]
5617 /// [GNU?] '&&' restrict[opt] attributes[opt]
5618 /// '::'[opt] nested-name-specifier '*' cv-qualifier-seq[opt]
5619 void Parser::ParseDeclaratorInternal(Declarator &D,
5620 DirectDeclParseFunction DirectDeclParser) {
5621 if (Diags.hasAllExtensionsSilenced())
5622 D.setExtension();
5623
5624 // C++ member pointers start with a '::' or a nested-name.
5625 // Member pointers get special handling, since there's no place for the
5626 // scope spec in the generic path below.
5627 if (getLangOpts().CPlusPlus &&
5628 (Tok.is(tok::coloncolon) || Tok.is(tok::kw_decltype) ||
5629 (Tok.is(tok::identifier) &&
5630 (NextToken().is(tok::coloncolon) || NextToken().is(tok::less))) ||
5631 Tok.is(tok::annot_cxxscope))) {
5632 bool EnteringContext =
5633 D.getContext() == DeclaratorContext::FileContext ||
5634 D.getContext() == DeclaratorContext::MemberContext;
5635 CXXScopeSpec SS;
5636 ParseOptionalCXXScopeSpecifier(SS, nullptr, EnteringContext);
5637
5638 if (SS.isNotEmpty()) {
5639 if (Tok.isNot(tok::star)) {
5640 // The scope spec really belongs to the direct-declarator.
5641 if (D.mayHaveIdentifier())
5642 D.getCXXScopeSpec() = SS;
5643 else
5644 AnnotateScopeToken(SS, true);
5645
5646 if (DirectDeclParser)
5647 (this->*DirectDeclParser)(D);
5648 return;
5649 }
5650
5651 SourceLocation Loc = ConsumeToken();
5652 D.SetRangeEnd(Loc);
5653 DeclSpec DS(AttrFactory);
5654 ParseTypeQualifierListOpt(DS);
5655 D.ExtendWithDeclSpec(DS);
5656
5657 // Recurse to parse whatever is left.
5658 ParseDeclaratorInternal(D, DirectDeclParser);
5659
5660 // Sema will have to catch (syntactically invalid) pointers into global
5661 // scope. It has to catch pointers into namespace scope anyway.
5662 D.AddTypeInfo(DeclaratorChunk::getMemberPointer(
5663 SS, DS.getTypeQualifiers(), DS.getEndLoc()),
5664 std::move(DS.getAttributes()),
5665 /* Don't replace range end. */ SourceLocation());
5666 return;
5667 }
5668 }
5669
5670 tok::TokenKind Kind = Tok.getKind();
5671
5672 if (D.getDeclSpec().isTypeSpecPipe() && !isPipeDeclerator(D)) {
5673 DeclSpec DS(AttrFactory);
5674 ParseTypeQualifierListOpt(DS);
5675
5676 D.AddTypeInfo(
5677 DeclaratorChunk::getPipe(DS.getTypeQualifiers(), DS.getPipeLoc()),
5678 std::move(DS.getAttributes()), SourceLocation());
5679 }
5680
5681 // Not a pointer, C++ reference, or block.
5682 if (!isPtrOperatorToken(Kind, getLangOpts(), D.getContext())) {
5683 if (DirectDeclParser)
5684 (this->*DirectDeclParser)(D);
5685 return;
5686 }
5687
5688 // Otherwise, '*' -> pointer, '^' -> block, '&' -> lvalue reference,
5689 // '&&' -> rvalue reference
5690 SourceLocation Loc = ConsumeToken(); // Eat the *, ^, & or &&.
5691 D.SetRangeEnd(Loc);
5692
5693 if (Kind == tok::star || Kind == tok::caret) {
5694 // Is a pointer.
5695 DeclSpec DS(AttrFactory);
5696
5697 // GNU attributes are not allowed here in a new-type-id, but Declspec and
5698 // C++11 attributes are allowed.
5699 unsigned Reqs = AR_CXX11AttributesParsed | AR_DeclspecAttributesParsed |
5700 ((D.getContext() != DeclaratorContext::CXXNewContext)
5701 ? AR_GNUAttributesParsed
5702 : AR_GNUAttributesParsedAndRejected);
5703 ParseTypeQualifierListOpt(DS, Reqs, true, !D.mayOmitIdentifier());
5704 D.ExtendWithDeclSpec(DS);
5705
5706 // Recursively parse the declarator.
5707 ParseDeclaratorInternal(D, DirectDeclParser);
5708 if (Kind == tok::star)
5709 // Remember that we parsed a pointer type, and remember the type-quals.
5710 D.AddTypeInfo(DeclaratorChunk::getPointer(
5711 DS.getTypeQualifiers(), Loc, DS.getConstSpecLoc(),
5712 DS.getVolatileSpecLoc(), DS.getRestrictSpecLoc(),
5713 DS.getAtomicSpecLoc(), DS.getUnalignedSpecLoc()),
5714 std::move(DS.getAttributes()), SourceLocation());
5715 else
5716 // Remember that we parsed a Block type, and remember the type-quals.
5717 D.AddTypeInfo(
5718 DeclaratorChunk::getBlockPointer(DS.getTypeQualifiers(), Loc),
5719 std::move(DS.getAttributes()), SourceLocation());
5720 } else {
5721 // Is a reference
5722 DeclSpec DS(AttrFactory);
5723
5724 // Complain about rvalue references in C++03, but then go on and build
5725 // the declarator.
5726 if (Kind == tok::ampamp)
5727 Diag(Loc, getLangOpts().CPlusPlus11 ?
5728 diag::warn_cxx98_compat_rvalue_reference :
5729 diag::ext_rvalue_reference);
5730
5731 // GNU-style and C++11 attributes are allowed here, as is restrict.
5732 ParseTypeQualifierListOpt(DS);
5733 D.ExtendWithDeclSpec(DS);
5734
5735 // C++ 8.3.2p1: cv-qualified references are ill-formed except when the
5736 // cv-qualifiers are introduced through the use of a typedef or of a
5737 // template type argument, in which case the cv-qualifiers are ignored.
5738 if (DS.getTypeQualifiers() != DeclSpec::TQ_unspecified) {
5739 if (DS.getTypeQualifiers() & DeclSpec::TQ_const)
5740 Diag(DS.getConstSpecLoc(),
5741 diag::err_invalid_reference_qualifier_application) << "const";
5742 if (DS.getTypeQualifiers() & DeclSpec::TQ_volatile)
5743 Diag(DS.getVolatileSpecLoc(),
5744 diag::err_invalid_reference_qualifier_application) << "volatile";
5745 // 'restrict' is permitted as an extension.
5746 if (DS.getTypeQualifiers() & DeclSpec::TQ_atomic)
5747 Diag(DS.getAtomicSpecLoc(),
5748 diag::err_invalid_reference_qualifier_application) << "_Atomic";
5749 }
5750
5751 // Recursively parse the declarator.
5752 ParseDeclaratorInternal(D, DirectDeclParser);
5753
5754 if (D.getNumTypeObjects() > 0) {
5755 // C++ [dcl.ref]p4: There shall be no references to references.
5756 DeclaratorChunk& InnerChunk = D.getTypeObject(D.getNumTypeObjects() - 1);
5757 if (InnerChunk.Kind == DeclaratorChunk::Reference) {
5758 if (const IdentifierInfo *II = D.getIdentifier())
5759 Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference)
5760 << II;
5761 else
5762 Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference)
5763 << "type name";
5764
5765 // Once we've complained about the reference-to-reference, we
5766 // can go ahead and build the (technically ill-formed)
5767 // declarator: reference collapsing will take care of it.
5768 }
5769 }
5770
5771 // Remember that we parsed a reference type.
5772 D.AddTypeInfo(DeclaratorChunk::getReference(DS.getTypeQualifiers(), Loc,
5773 Kind == tok::amp),
5774 std::move(DS.getAttributes()), SourceLocation());
5775 }
5776 }
5777
5778 // When correcting from misplaced brackets before the identifier, the location
5779 // is saved inside the declarator so that other diagnostic messages can use
5780 // them. This extracts and returns that location, or returns the provided
5781 // location if a stored location does not exist.
5782 static SourceLocation getMissingDeclaratorIdLoc(Declarator &D,
5783 SourceLocation Loc) {
5784 if (D.getName().StartLocation.isInvalid() &&
5785 D.getName().EndLocation.isValid())
5786 return D.getName().EndLocation;
5787
5788 return Loc;
5789 }
5790
5791 /// ParseDirectDeclarator
5792 /// direct-declarator: [C99 6.7.5]
5793 /// [C99] identifier
5794 /// '(' declarator ')'
5795 /// [GNU] '(' attributes declarator ')'
5796 /// [C90] direct-declarator '[' constant-expression[opt] ']'
5797 /// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']'
5798 /// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']'
5799 /// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']'
5800 /// [C99] direct-declarator '[' type-qual-list[opt] '*' ']'
5801 /// [C++11] direct-declarator '[' constant-expression[opt] ']'
5802 /// attribute-specifier-seq[opt]
5803 /// direct-declarator '(' parameter-type-list ')'
5804 /// direct-declarator '(' identifier-list[opt] ')'
5805 /// [GNU] direct-declarator '(' parameter-forward-declarations
5806 /// parameter-type-list[opt] ')'
5807 /// [C++] direct-declarator '(' parameter-declaration-clause ')'
5808 /// cv-qualifier-seq[opt] exception-specification[opt]
5809 /// [C++11] direct-declarator '(' parameter-declaration-clause ')'
5810 /// attribute-specifier-seq[opt] cv-qualifier-seq[opt]
5811 /// ref-qualifier[opt] exception-specification[opt]
5812 /// [C++] declarator-id
5813 /// [C++11] declarator-id attribute-specifier-seq[opt]
5814 ///
5815 /// declarator-id: [C++ 8]
5816 /// '...'[opt] id-expression
5817 /// '::'[opt] nested-name-specifier[opt] type-name
5818 ///
5819 /// id-expression: [C++ 5.1]
5820 /// unqualified-id
5821 /// qualified-id
5822 ///
5823 /// unqualified-id: [C++ 5.1]
5824 /// identifier
5825 /// operator-function-id
5826 /// conversion-function-id
5827 /// '~' class-name
5828 /// template-id
5829 ///
5830 /// C++17 adds the following, which we also handle here:
5831 ///
5832 /// simple-declaration:
5833 /// <decl-spec> '[' identifier-list ']' brace-or-equal-initializer ';'
5834 ///
5835 /// Note, any additional constructs added here may need corresponding changes
5836 /// in isConstructorDeclarator.
5837 void Parser::ParseDirectDeclarator(Declarator &D) {
5838 DeclaratorScopeObj DeclScopeObj(*this, D.getCXXScopeSpec());
5839
5840 if (getLangOpts().CPlusPlus && D.mayHaveIdentifier()) {
5841 // This might be a C++17 structured binding.
5842 if (Tok.is(tok::l_square) && !D.mayOmitIdentifier() &&
5843 D.getCXXScopeSpec().isEmpty())
5844 return ParseDecompositionDeclarator(D);
5845
5846 // Don't parse FOO:BAR as if it were a typo for FOO::BAR inside a class, in
5847 // this context it is a bitfield. Also in range-based for statement colon
5848 // may delimit for-range-declaration.
5849 ColonProtectionRAIIObject X(
5850 *this, D.getContext() == DeclaratorContext::MemberContext ||
5851 (D.getContext() == DeclaratorContext::ForContext &&
5852 getLangOpts().CPlusPlus11));
5853
5854 // ParseDeclaratorInternal might already have parsed the scope.
5855 if (D.getCXXScopeSpec().isEmpty()) {
5856 bool EnteringContext =
5857 D.getContext() == DeclaratorContext::FileContext ||
5858 D.getContext() == DeclaratorContext::MemberContext;
5859 ParseOptionalCXXScopeSpecifier(D.getCXXScopeSpec(), nullptr,
5860 EnteringContext);
5861 }
5862
5863 if (D.getCXXScopeSpec().isValid()) {
5864 if (Actions.ShouldEnterDeclaratorScope(getCurScope(),
5865 D.getCXXScopeSpec()))
5866 // Change the declaration context for name lookup, until this function
5867 // is exited (and the declarator has been parsed).
5868 DeclScopeObj.EnterDeclaratorScope();
5869 else if (getObjCDeclContext()) {
5870 // Ensure that we don't interpret the next token as an identifier when
5871 // dealing with declarations in an Objective-C container.
5872 D.SetIdentifier(nullptr, Tok.getLocation());
5873 D.setInvalidType(true);
5874 ConsumeToken();
5875 goto PastIdentifier;
5876 }
5877 }
5878
5879 // C++0x [dcl.fct]p14:
5880 // There is a syntactic ambiguity when an ellipsis occurs at the end of a
5881 // parameter-declaration-clause without a preceding comma. In this case,
5882 // the ellipsis is parsed as part of the abstract-declarator if the type
5883 // of the parameter either names a template parameter pack that has not
5884 // been expanded or contains auto; otherwise, it is parsed as part of the
5885 // parameter-declaration-clause.
5886 if (Tok.is(tok::ellipsis) && D.getCXXScopeSpec().isEmpty() &&
5887 !((D.getContext() == DeclaratorContext::PrototypeContext ||
5888 D.getContext() == DeclaratorContext::LambdaExprParameterContext ||
5889 D.getContext() == DeclaratorContext::BlockLiteralContext) &&
5890 NextToken().is(tok::r_paren) &&
5891 !D.hasGroupingParens() &&
5892 !Actions.containsUnexpandedParameterPacks(D) &&
5893 D.getDeclSpec().getTypeSpecType() != TST_auto)) {
5894 SourceLocation EllipsisLoc = ConsumeToken();
5895 if (isPtrOperatorToken(Tok.getKind(), getLangOpts(), D.getContext())) {
5896 // The ellipsis was put in the wrong place. Recover, and explain to
5897 // the user what they should have done.
5898 ParseDeclarator(D);
5899 if (EllipsisLoc.isValid())
5900 DiagnoseMisplacedEllipsisInDeclarator(EllipsisLoc, D);
5901 return;
5902 } else
5903 D.setEllipsisLoc(EllipsisLoc);
5904
5905 // The ellipsis can't be followed by a parenthesized declarator. We
5906 // check for that in ParseParenDeclarator, after we have disambiguated
5907 // the l_paren token.
5908 }
5909
5910 if (Tok.isOneOf(tok::identifier, tok::kw_operator, tok::annot_template_id,
5911 tok::tilde)) {
5912 // We found something that indicates the start of an unqualified-id.
5913 // Parse that unqualified-id.
5914 bool AllowConstructorName;
5915 bool AllowDeductionGuide;
5916 if (D.getDeclSpec().hasTypeSpecifier()) {
5917 AllowConstructorName = false;
5918 AllowDeductionGuide = false;
5919 } else if (D.getCXXScopeSpec().isSet()) {
5920 AllowConstructorName =
5921 (D.getContext() == DeclaratorContext::FileContext ||
5922 D.getContext() == DeclaratorContext::MemberContext);
5923 AllowDeductionGuide = false;
5924 } else {
5925 AllowConstructorName =
5926 (D.getContext() == DeclaratorContext::MemberContext);
5927 AllowDeductionGuide =
5928 (D.getContext() == DeclaratorContext::FileContext ||
5929 D.getContext() == DeclaratorContext::MemberContext);
5930 }
5931
5932 bool HadScope = D.getCXXScopeSpec().isValid();
5933 if (ParseUnqualifiedId(D.getCXXScopeSpec(),
5934 /*EnteringContext=*/true,
5935 /*AllowDestructorName=*/true, AllowConstructorName,
5936 AllowDeductionGuide, nullptr, nullptr,
5937 D.getName()) ||
5938 // Once we're past the identifier, if the scope was bad, mark the
5939 // whole declarator bad.
5940 D.getCXXScopeSpec().isInvalid()) {
5941 D.SetIdentifier(nullptr, Tok.getLocation());
5942 D.setInvalidType(true);
5943 } else {
5944 // ParseUnqualifiedId might have parsed a scope specifier during error
5945 // recovery. If it did so, enter that scope.
5946 if (!HadScope && D.getCXXScopeSpec().isValid() &&
5947 Actions.ShouldEnterDeclaratorScope(getCurScope(),
5948 D.getCXXScopeSpec()))
5949 DeclScopeObj.EnterDeclaratorScope();
5950
5951 // Parsed the unqualified-id; update range information and move along.
5952 if (D.getSourceRange().getBegin().isInvalid())
5953 D.SetRangeBegin(D.getName().getSourceRange().getBegin());
5954 D.SetRangeEnd(D.getName().getSourceRange().getEnd());
5955 }
5956 goto PastIdentifier;
5957 }
5958
5959 if (D.getCXXScopeSpec().isNotEmpty()) {
5960 // We have a scope specifier but no following unqualified-id.
5961 Diag(PP.getLocForEndOfToken(D.getCXXScopeSpec().getEndLoc()),
5962 diag::err_expected_unqualified_id)
5963 << /*C++*/1;
5964 D.SetIdentifier(nullptr, Tok.getLocation());
5965 goto PastIdentifier;
5966 }
5967 } else if (Tok.is(tok::identifier) && D.mayHaveIdentifier()) {
5968 assert(!getLangOpts().CPlusPlus &&
5969 "There's a C++-specific check for tok::identifier above");
5970 assert(Tok.getIdentifierInfo() && "Not an identifier?");
5971 D.SetIdentifier(Tok.getIdentifierInfo(), Tok.getLocation());
5972 D.SetRangeEnd(Tok.getLocation());
5973 ConsumeToken();
5974 goto PastIdentifier;
5975 } else if (Tok.is(tok::identifier) && !D.mayHaveIdentifier()) {
5976 // We're not allowed an identifier here, but we got one. Try to figure out
5977 // if the user was trying to attach a name to the type, or whether the name
5978 // is some unrelated trailing syntax.
5979 bool DiagnoseIdentifier = false;
5980 if (D.hasGroupingParens())
5981 // An identifier within parens is unlikely to be intended to be anything
5982 // other than a name being "declared".
5983 DiagnoseIdentifier = true;
5984 else if (D.getContext() == DeclaratorContext::TemplateArgContext)
5985 // T<int N> is an accidental identifier; T<int N indicates a missing '>'.
5986 DiagnoseIdentifier =
5987 NextToken().isOneOf(tok::comma, tok::greater, tok::greatergreater);
5988 else if (D.getContext() == DeclaratorContext::AliasDeclContext ||
5989 D.getContext() == DeclaratorContext::AliasTemplateContext)
5990 // The most likely error is that the ';' was forgotten.
5991 DiagnoseIdentifier = NextToken().isOneOf(tok::comma, tok::semi);
5992 else if ((D.getContext() == DeclaratorContext::TrailingReturnContext ||
5993 D.getContext() == DeclaratorContext::TrailingReturnVarContext) &&
5994 !isCXX11VirtSpecifier(Tok))
5995 DiagnoseIdentifier = NextToken().isOneOf(
5996 tok::comma, tok::semi, tok::equal, tok::l_brace, tok::kw_try);
5997 if (DiagnoseIdentifier) {
5998 Diag(Tok.getLocation(), diag::err_unexpected_unqualified_id)
5999 << FixItHint::CreateRemoval(Tok.getLocation());
6000 D.SetIdentifier(nullptr, Tok.getLocation());
6001 ConsumeToken();
6002 goto PastIdentifier;
6003 }
6004 }
6005
6006 if (Tok.is(tok::l_paren)) {
6007 // If this might be an abstract-declarator followed by a direct-initializer,
6008 // check whether this is a valid declarator chunk. If it can't be, assume
6009 // that it's an initializer instead.
6010 if (D.mayOmitIdentifier() && D.mayBeFollowedByCXXDirectInit()) {
6011 RevertingTentativeParsingAction PA(*this);
6012 if (TryParseDeclarator(true, D.mayHaveIdentifier(), true) ==
6013 TPResult::False) {
6014 D.SetIdentifier(nullptr, Tok.getLocation());
6015 goto PastIdentifier;
6016 }
6017 }
6018
6019 // direct-declarator: '(' declarator ')'
6020 // direct-declarator: '(' attributes declarator ')'
6021 // Example: 'char (*X)' or 'int (*XX)(void)'
6022 ParseParenDeclarator(D);
6023
6024 // If the declarator was parenthesized, we entered the declarator
6025 // scope when parsing the parenthesized declarator, then exited
6026 // the scope already. Re-enter the scope, if we need to.
6027 if (D.getCXXScopeSpec().isSet()) {
6028 // If there was an error parsing parenthesized declarator, declarator
6029 // scope may have been entered before. Don't do it again.
6030 if (!D.isInvalidType() &&
6031 Actions.ShouldEnterDeclaratorScope(getCurScope(),
6032 D.getCXXScopeSpec()))
6033 // Change the declaration context for name lookup, until this function
6034 // is exited (and the declarator has been parsed).
6035 DeclScopeObj.EnterDeclaratorScope();
6036 }
6037 } else if (D.mayOmitIdentifier()) {
6038 // This could be something simple like "int" (in which case the declarator
6039 // portion is empty), if an abstract-declarator is allowed.
6040 D.SetIdentifier(nullptr, Tok.getLocation());
6041
6042 // The grammar for abstract-pack-declarator does not allow grouping parens.
6043 // FIXME: Revisit this once core issue 1488 is resolved.
6044 if (D.hasEllipsis() && D.hasGroupingParens())
6045 Diag(PP.getLocForEndOfToken(D.getEllipsisLoc()),
6046 diag::ext_abstract_pack_declarator_parens);
6047 } else {
6048 if (Tok.getKind() == tok::annot_pragma_parser_crash)
6049 LLVM_BUILTIN_TRAP;
6050 if (Tok.is(tok::l_square))
6051 return ParseMisplacedBracketDeclarator(D);
6052 if (D.getContext() == DeclaratorContext::MemberContext) {
6053 // Objective-C++: Detect C++ keywords and try to prevent further errors by
6054 // treating these keyword as valid member names.
6055 if (getLangOpts().ObjC && getLangOpts().CPlusPlus &&
6056 Tok.getIdentifierInfo() &&
6057 Tok.getIdentifierInfo()->isCPlusPlusKeyword(getLangOpts())) {
6058 Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
6059 diag::err_expected_member_name_or_semi_objcxx_keyword)
6060 << Tok.getIdentifierInfo()
6061 << (D.getDeclSpec().isEmpty() ? SourceRange()
6062 : D.getDeclSpec().getSourceRange());
6063 D.SetIdentifier(Tok.getIdentifierInfo(), Tok.getLocation());
6064 D.SetRangeEnd(Tok.getLocation());
6065 ConsumeToken();
6066 goto PastIdentifier;
6067 }
6068 Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
6069 diag::err_expected_member_name_or_semi)
6070 << (D.getDeclSpec().isEmpty() ? SourceRange()
6071 : D.getDeclSpec().getSourceRange());
6072 } else if (getLangOpts().CPlusPlus) {
6073 if (Tok.isOneOf(tok::period, tok::arrow))
6074 Diag(Tok, diag::err_invalid_operator_on_type) << Tok.is(tok::arrow);
6075 else {
6076 SourceLocation Loc = D.getCXXScopeSpec().getEndLoc();
6077 if (Tok.isAtStartOfLine() && Loc.isValid())
6078 Diag(PP.getLocForEndOfToken(Loc), diag::err_expected_unqualified_id)
6079 << getLangOpts().CPlusPlus;
6080 else
6081 Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
6082 diag::err_expected_unqualified_id)
6083 << getLangOpts().CPlusPlus;
6084 }
6085 } else {
6086 Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
6087 diag::err_expected_either)
6088 << tok::identifier << tok::l_paren;
6089 }
6090 D.SetIdentifier(nullptr, Tok.getLocation());
6091 D.setInvalidType(true);
6092 }
6093
6094 PastIdentifier:
6095 assert(D.isPastIdentifier() &&
6096 "Haven't past the location of the identifier yet?");
6097
6098 // Don't parse attributes unless we have parsed an unparenthesized name.
6099 if (D.hasName() && !D.getNumTypeObjects())
6100 MaybeParseCXX11Attributes(D);
6101
6102 while (1) {
6103 if (Tok.is(tok::l_paren)) {
6104 bool IsFunctionDeclaration = D.isFunctionDeclaratorAFunctionDeclaration();
6105 // Enter function-declaration scope, limiting any declarators to the
6106 // function prototype scope, including parameter declarators.
6107 ParseScope PrototypeScope(this,
6108 Scope::FunctionPrototypeScope|Scope::DeclScope|
6109 (IsFunctionDeclaration
6110 ? Scope::FunctionDeclarationScope : 0));
6111
6112 // The paren may be part of a C++ direct initializer, eg. "int x(1);".
6113 // In such a case, check if we actually have a function declarator; if it
6114 // is not, the declarator has been fully parsed.
6115 bool IsAmbiguous = false;
6116 if (getLangOpts().CPlusPlus && D.mayBeFollowedByCXXDirectInit()) {
6117 // The name of the declarator, if any, is tentatively declared within
6118 // a possible direct initializer.
6119 TentativelyDeclaredIdentifiers.push_back(D.getIdentifier());
6120 bool IsFunctionDecl = isCXXFunctionDeclarator(&IsAmbiguous);
6121 TentativelyDeclaredIdentifiers.pop_back();
6122 if (!IsFunctionDecl)
6123 break;
6124 }
6125 ParsedAttributes attrs(AttrFactory);
6126 BalancedDelimiterTracker T(*this, tok::l_paren);
6127 T.consumeOpen();
6128 if (IsFunctionDeclaration)
6129 Actions.ActOnStartFunctionDeclarationDeclarator(D,
6130 TemplateParameterDepth);
6131 ParseFunctionDeclarator(D, attrs, T, IsAmbiguous);
6132 if (IsFunctionDeclaration)
6133 Actions.ActOnFinishFunctionDeclarationDeclarator(D);
6134 PrototypeScope.Exit();
6135 } else if (Tok.is(tok::l_square)) {
6136 ParseBracketDeclarator(D);
6137 } else if (Tok.is(tok::kw_requires) && D.hasGroupingParens()) {
6138 // This declarator is declaring a function, but the requires clause is
6139 // in the wrong place:
6140 // void (f() requires true);
6141 // instead of
6142 // void f() requires true;
6143 // or
6144 // void (f()) requires true;
6145 Diag(Tok, diag::err_requires_clause_inside_parens);
6146 ConsumeToken();
6147 ExprResult TrailingRequiresClause = Actions.CorrectDelayedTyposInExpr(
6148 ParseConstraintLogicalOrExpression(/*IsTrailingRequiresClause=*/true));
6149 if (TrailingRequiresClause.isUsable() && D.isFunctionDeclarator() &&
6150 !D.hasTrailingRequiresClause())
6151 // We're already ill-formed if we got here but we'll accept it anyway.
6152 D.setTrailingRequiresClause(TrailingRequiresClause.get());
6153 } else {
6154 break;
6155 }
6156 }
6157 }
6158
6159 void Parser::ParseDecompositionDeclarator(Declarator &D) {
6160 assert(Tok.is(tok::l_square));
6161
6162 // If this doesn't look like a structured binding, maybe it's a misplaced
6163 // array declarator.
6164 // FIXME: Consume the l_square first so we don't need extra lookahead for
6165 // this.
6166 if (!(NextToken().is(tok::identifier) &&
6167 GetLookAheadToken(2).isOneOf(tok::comma, tok::r_square)) &&
6168 !(NextToken().is(tok::r_square) &&
6169 GetLookAheadToken(2).isOneOf(tok::equal, tok::l_brace)))
6170 return ParseMisplacedBracketDeclarator(D);
6171
6172 BalancedDelimiterTracker T(*this, tok::l_square);
6173 T.consumeOpen();
6174
6175 SmallVector<DecompositionDeclarator::Binding, 32> Bindings;
6176 while (Tok.isNot(tok::r_square)) {
6177 if (!Bindings.empty()) {
6178 if (Tok.is(tok::comma))
6179 ConsumeToken();
6180 else {
6181 if (Tok.is(tok::identifier)) {
6182 SourceLocation EndLoc = getEndOfPreviousToken();
6183 Diag(EndLoc, diag::err_expected)
6184 << tok::comma << FixItHint::CreateInsertion(EndLoc, ",");
6185 } else {
6186 Diag(Tok, diag::err_expected_comma_or_rsquare);
6187 }
6188
6189 SkipUntil(tok::r_square, tok::comma, tok::identifier,
6190 StopAtSemi | StopBeforeMatch);
6191 if (Tok.is(tok::comma))
6192 ConsumeToken();
6193 else if (Tok.isNot(tok::identifier))
6194 break;
6195 }
6196 }
6197
6198 if (Tok.isNot(tok::identifier)) {
6199 Diag(Tok, diag::err_expected) << tok::identifier;
6200 break;
6201 }
6202
6203 Bindings.push_back({Tok.getIdentifierInfo(), Tok.getLocation()});
6204 ConsumeToken();
6205 }
6206
6207 if (Tok.isNot(tok::r_square))
6208 // We've already diagnosed a problem here.
6209 T.skipToEnd();
6210 else {
6211 // C++17 does not allow the identifier-list in a structured binding
6212 // to be empty.
6213 if (Bindings.empty())
6214 Diag(Tok.getLocation(), diag::ext_decomp_decl_empty);
6215
6216 T.consumeClose();
6217 }
6218
6219 return D.setDecompositionBindings(T.getOpenLocation(), Bindings,
6220 T.getCloseLocation());
6221 }
6222
6223 /// ParseParenDeclarator - We parsed the declarator D up to a paren. This is
6224 /// only called before the identifier, so these are most likely just grouping
6225 /// parens for precedence. If we find that these are actually function
6226 /// parameter parens in an abstract-declarator, we call ParseFunctionDeclarator.
6227 ///
6228 /// direct-declarator:
6229 /// '(' declarator ')'
6230 /// [GNU] '(' attributes declarator ')'
6231 /// direct-declarator '(' parameter-type-list ')'
6232 /// direct-declarator '(' identifier-list[opt] ')'
6233 /// [GNU] direct-declarator '(' parameter-forward-declarations
6234 /// parameter-type-list[opt] ')'
6235 ///
6236 void Parser::ParseParenDeclarator(Declarator &D) {
6237 BalancedDelimiterTracker T(*this, tok::l_paren);
6238 T.consumeOpen();
6239
6240 assert(!D.isPastIdentifier() && "Should be called before passing identifier");
6241
6242 // Eat any attributes before we look at whether this is a grouping or function
6243 // declarator paren. If this is a grouping paren, the attribute applies to
6244 // the type being built up, for example:
6245 // int (__attribute__(()) *x)(long y)
6246 // If this ends up not being a grouping paren, the attribute applies to the
6247 // first argument, for example:
6248 // int (__attribute__(()) int x)
6249 // In either case, we need to eat any attributes to be able to determine what
6250 // sort of paren this is.
6251 //
6252 ParsedAttributes attrs(AttrFactory);
6253 bool RequiresArg = false;
6254 if (Tok.is(tok::kw___attribute)) {
6255 ParseGNUAttributes(attrs);
6256
6257 // We require that the argument list (if this is a non-grouping paren) be
6258 // present even if the attribute list was empty.
6259 RequiresArg = true;
6260 }
6261
6262 // Eat any Microsoft extensions.
6263 ParseMicrosoftTypeAttributes(attrs);
6264
6265 // Eat any Borland extensions.
6266 if (Tok.is(tok::kw___pascal))
6267 ParseBorlandTypeAttributes(attrs);
6268
6269 // If we haven't past the identifier yet (or where the identifier would be
6270 // stored, if this is an abstract declarator), then this is probably just
6271 // grouping parens. However, if this could be an abstract-declarator, then
6272 // this could also be the start of function arguments (consider 'void()').
6273 bool isGrouping;
6274
6275 if (!D.mayOmitIdentifier()) {
6276 // If this can't be an abstract-declarator, this *must* be a grouping
6277 // paren, because we haven't seen the identifier yet.
6278 isGrouping = true;
6279 } else if (Tok.is(tok::r_paren) || // 'int()' is a function.
6280 (getLangOpts().CPlusPlus && Tok.is(tok::ellipsis) &&
6281 NextToken().is(tok::r_paren)) || // C++ int(...)
6282 isDeclarationSpecifier() || // 'int(int)' is a function.
6283 isCXX11AttributeSpecifier()) { // 'int([[]]int)' is a function.
6284 // This handles C99 6.7.5.3p11: in "typedef int X; void foo(X)", X is
6285 // considered to be a type, not a K&R identifier-list.
6286 isGrouping = false;
6287 } else {
6288 // Otherwise, this is a grouping paren, e.g. 'int (*X)' or 'int(X)'.
6289 isGrouping = true;
6290 }
6291
6292 // If this is a grouping paren, handle:
6293 // direct-declarator: '(' declarator ')'
6294 // direct-declarator: '(' attributes declarator ')'
6295 if (isGrouping) {
6296 SourceLocation EllipsisLoc = D.getEllipsisLoc();
6297 D.setEllipsisLoc(SourceLocation());
6298
6299 bool hadGroupingParens = D.hasGroupingParens();
6300 D.setGroupingParens(true);
6301 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
6302 // Match the ')'.
6303 T.consumeClose();
6304 D.AddTypeInfo(
6305 DeclaratorChunk::getParen(T.getOpenLocation(), T.getCloseLocation()),
6306 std::move(attrs), T.getCloseLocation());
6307
6308 D.setGroupingParens(hadGroupingParens);
6309
6310 // An ellipsis cannot be placed outside parentheses.
6311 if (EllipsisLoc.isValid())
6312 DiagnoseMisplacedEllipsisInDeclarator(EllipsisLoc, D);
6313
6314 return;
6315 }
6316
6317 // Okay, if this wasn't a grouping paren, it must be the start of a function
6318 // argument list. Recognize that this declarator will never have an
6319 // identifier (and remember where it would have been), then call into
6320 // ParseFunctionDeclarator to handle of argument list.
6321 D.SetIdentifier(nullptr, Tok.getLocation());
6322
6323 // Enter function-declaration scope, limiting any declarators to the
6324 // function prototype scope, including parameter declarators.
6325 ParseScope PrototypeScope(this,
6326 Scope::FunctionPrototypeScope | Scope::DeclScope |
6327 (D.isFunctionDeclaratorAFunctionDeclaration()
6328 ? Scope::FunctionDeclarationScope : 0));
6329 ParseFunctionDeclarator(D, attrs, T, false, RequiresArg);
6330 PrototypeScope.Exit();
6331 }
6332
6333 void Parser::InitCXXThisScopeForDeclaratorIfRelevant(
6334 const Declarator &D, const DeclSpec &DS,
6335 llvm::Optional<Sema::CXXThisScopeRAII> &ThisScope) {
6336 // C++11 [expr.prim.general]p3:
6337 // If a declaration declares a member function or member function
6338 // template of a class X, the expression this is a prvalue of type
6339 // "pointer to cv-qualifier-seq X" between the optional cv-qualifer-seq
6340 // and the end of the function-definition, member-declarator, or
6341 // declarator.
6342 // FIXME: currently, "static" case isn't handled correctly.
6343 bool IsCXX11MemberFunction = getLangOpts().CPlusPlus11 &&
6344 D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef &&
6345 (D.getContext() == DeclaratorContext::MemberContext
6346 ? !D.getDeclSpec().isFriendSpecified()
6347 : D.getContext() == DeclaratorContext::FileContext &&
6348 D.getCXXScopeSpec().isValid() &&
6349 Actions.CurContext->isRecord());
6350 if (!IsCXX11MemberFunction)
6351 return;
6352
6353 Qualifiers Q = Qualifiers::fromCVRUMask(DS.getTypeQualifiers());
6354 if (D.getDeclSpec().hasConstexprSpecifier() && !getLangOpts().CPlusPlus14)
6355 Q.addConst();
6356 // FIXME: Collect C++ address spaces.
6357 // If there are multiple different address spaces, the source is invalid.
6358 // Carry on using the first addr space for the qualifiers of 'this'.
6359 // The diagnostic will be given later while creating the function
6360 // prototype for the method.
6361 if (getLangOpts().OpenCLCPlusPlus) {
6362 for (ParsedAttr &attr : DS.getAttributes()) {
6363 LangAS ASIdx = attr.asOpenCLLangAS();
6364 if (ASIdx != LangAS::Default) {
6365 Q.addAddressSpace(ASIdx);
6366 break;
6367 }
6368 }
6369 }
6370 ThisScope.emplace(Actions, dyn_cast<CXXRecordDecl>(Actions.CurContext), Q,
6371 IsCXX11MemberFunction);
6372 }
6373
6374 /// ParseFunctionDeclarator - We are after the identifier and have parsed the
6375 /// declarator D up to a paren, which indicates that we are parsing function
6376 /// arguments.
6377 ///
6378 /// If FirstArgAttrs is non-null, then the caller parsed those arguments
6379 /// immediately after the open paren - they should be considered to be the
6380 /// first argument of a parameter.
6381 ///
6382 /// If RequiresArg is true, then the first argument of the function is required
6383 /// to be present and required to not be an identifier list.
6384 ///
6385 /// For C++, after the parameter-list, it also parses the cv-qualifier-seq[opt],
6386 /// (C++11) ref-qualifier[opt], exception-specification[opt],
6387 /// (C++11) attribute-specifier-seq[opt], (C++11) trailing-return-type[opt] and
6388 /// (C++2a) the trailing requires-clause.
6389 ///
6390 /// [C++11] exception-specification:
6391 /// dynamic-exception-specification
6392 /// noexcept-specification
6393 ///
6394 void Parser::ParseFunctionDeclarator(Declarator &D,
6395 ParsedAttributes &FirstArgAttrs,
6396 BalancedDelimiterTracker &Tracker,
6397 bool IsAmbiguous,
6398 bool RequiresArg) {
6399 assert(getCurScope()->isFunctionPrototypeScope() &&
6400 "Should call from a Function scope");
6401 // lparen is already consumed!
6402 assert(D.isPastIdentifier() && "Should not call before identifier!");
6403
6404 // This should be true when the function has typed arguments.
6405 // Otherwise, it is treated as a K&R-style function.
6406 bool HasProto = false;
6407 // Build up an array of information about the parsed arguments.
6408 SmallVector<DeclaratorChunk::ParamInfo, 16> ParamInfo;
6409 // Remember where we see an ellipsis, if any.
6410 SourceLocation EllipsisLoc;
6411
6412 DeclSpec DS(AttrFactory);
6413 bool RefQualifierIsLValueRef = true;
6414 SourceLocation RefQualifierLoc;
6415 ExceptionSpecificationType ESpecType = EST_None;
6416 SourceRange ESpecRange;
6417 SmallVector<ParsedType, 2> DynamicExceptions;
6418 SmallVector<SourceRange, 2> DynamicExceptionRanges;
6419 ExprResult NoexceptExpr;
6420 CachedTokens *ExceptionSpecTokens = nullptr;
6421 ParsedAttributesWithRange FnAttrs(AttrFactory);
6422 TypeResult TrailingReturnType;
6423
6424 /* LocalEndLoc is the end location for the local FunctionTypeLoc.
6425 EndLoc is the end location for the function declarator.
6426 They differ for trailing return types. */
6427 SourceLocation StartLoc, LocalEndLoc, EndLoc;
6428 SourceLocation LParenLoc, RParenLoc;
6429 LParenLoc = Tracker.getOpenLocation();
6430 StartLoc = LParenLoc;
6431
6432 if (isFunctionDeclaratorIdentifierList()) {
6433 if (RequiresArg)
6434 Diag(Tok, diag::err_argument_required_after_attribute);
6435
6436 ParseFunctionDeclaratorIdentifierList(D, ParamInfo);
6437
6438 Tracker.consumeClose();
6439 RParenLoc = Tracker.getCloseLocation();
6440 LocalEndLoc = RParenLoc;
6441 EndLoc = RParenLoc;
6442
6443 // If there are attributes following the identifier list, parse them and
6444 // prohibit them.
6445 MaybeParseCXX11Attributes(FnAttrs);
6446 ProhibitAttributes(FnAttrs);
6447 } else {
6448 if (Tok.isNot(tok::r_paren))
6449 ParseParameterDeclarationClause(D.getContext(), FirstArgAttrs, ParamInfo,
6450 EllipsisLoc);
6451 else if (RequiresArg)
6452 Diag(Tok, diag::err_argument_required_after_attribute);
6453
6454 HasProto = ParamInfo.size() || getLangOpts().CPlusPlus
6455 || getLangOpts().OpenCL;
6456
6457 // If we have the closing ')', eat it.
6458 Tracker.consumeClose();
6459 RParenLoc = Tracker.getCloseLocation();
6460 LocalEndLoc = RParenLoc;
6461 EndLoc = RParenLoc;
6462
6463 if (getLangOpts().CPlusPlus) {
6464 // FIXME: Accept these components in any order, and produce fixits to
6465 // correct the order if the user gets it wrong. Ideally we should deal
6466 // with the pure-specifier in the same way.
6467
6468 // Parse cv-qualifier-seq[opt].
6469 ParseTypeQualifierListOpt(DS, AR_NoAttributesParsed,
6470 /*AtomicAllowed*/ false,
6471 /*IdentifierRequired=*/false,
6472 llvm::function_ref<void()>([&]() {
6473 Actions.CodeCompleteFunctionQualifiers(DS, D);
6474 }));
6475 if (!DS.getSourceRange().getEnd().isInvalid()) {
6476 EndLoc = DS.getSourceRange().getEnd();
6477 }
6478
6479 // Parse ref-qualifier[opt].
6480 if (ParseRefQualifier(RefQualifierIsLValueRef, RefQualifierLoc))
6481 EndLoc = RefQualifierLoc;
6482
6483 llvm::Optional<Sema::CXXThisScopeRAII> ThisScope;
6484 InitCXXThisScopeForDeclaratorIfRelevant(D, DS, ThisScope);
6485
6486 // Parse exception-specification[opt].
6487 bool Delayed = D.isFirstDeclarationOfMember() &&
6488 D.isFunctionDeclaratorAFunctionDeclaration();
6489 if (Delayed && Actions.isLibstdcxxEagerExceptionSpecHack(D) &&
6490 GetLookAheadToken(0).is(tok::kw_noexcept) &&
6491 GetLookAheadToken(1).is(tok::l_paren) &&
6492 GetLookAheadToken(2).is(tok::kw_noexcept) &&
6493 GetLookAheadToken(3).is(tok::l_paren) &&
6494 GetLookAheadToken(4).is(tok::identifier) &&
6495 GetLookAheadToken(4).getIdentifierInfo()->isStr("swap")) {
6496 // HACK: We've got an exception-specification
6497 // noexcept(noexcept(swap(...)))
6498 // or
6499 // noexcept(noexcept(swap(...)) && noexcept(swap(...)))
6500 // on a 'swap' member function. This is a libstdc++ bug; the lookup
6501 // for 'swap' will only find the function we're currently declaring,
6502 // whereas it expects to find a non-member swap through ADL. Turn off
6503 // delayed parsing to give it a chance to find what it expects.
6504 Delayed = false;
6505 }
6506 ESpecType = tryParseExceptionSpecification(Delayed,
6507 ESpecRange,
6508 DynamicExceptions,
6509 DynamicExceptionRanges,
6510 NoexceptExpr,
6511 ExceptionSpecTokens);
6512 if (ESpecType != EST_None)
6513 EndLoc = ESpecRange.getEnd();
6514
6515 // Parse attribute-specifier-seq[opt]. Per DR 979 and DR 1297, this goes
6516 // after the exception-specification.
6517 MaybeParseCXX11Attributes(FnAttrs);
6518
6519 // Parse trailing-return-type[opt].
6520 LocalEndLoc = EndLoc;
6521 if (getLangOpts().CPlusPlus11 && Tok.is(tok::arrow)) {
6522 Diag(Tok, diag::warn_cxx98_compat_trailing_return_type);
6523 if (D.getDeclSpec().getTypeSpecType() == TST_auto)
6524 StartLoc = D.getDeclSpec().getTypeSpecTypeLoc();
6525 LocalEndLoc = Tok.getLocation();
6526 SourceRange Range;
6527 TrailingReturnType =
6528 ParseTrailingReturnType(Range, D.mayBeFollowedByCXXDirectInit());
6529 EndLoc = Range.getEnd();
6530 }
6531 } else if (standardAttributesAllowed()) {
6532 MaybeParseCXX11Attributes(FnAttrs);
6533 }
6534 }
6535
6536 // Collect non-parameter declarations from the prototype if this is a function
6537 // declaration. They will be moved into the scope of the function. Only do
6538 // this in C and not C++, where the decls will continue to live in the
6539 // surrounding context.
6540 SmallVector<NamedDecl *, 0> DeclsInPrototype;
6541 if (getCurScope()->getFlags() & Scope::FunctionDeclarationScope &&
6542 !getLangOpts().CPlusPlus) {
6543 for (Decl *D : getCurScope()->decls()) {
6544 NamedDecl *ND = dyn_cast<NamedDecl>(D);
6545 if (!ND || isa<ParmVarDecl>(ND))
6546 continue;
6547 DeclsInPrototype.push_back(ND);
6548 }
6549 }
6550
6551 // Remember that we parsed a function type, and remember the attributes.
6552 D.AddTypeInfo(DeclaratorChunk::getFunction(
6553 HasProto, IsAmbiguous, LParenLoc, ParamInfo.data(),
6554 ParamInfo.size(), EllipsisLoc, RParenLoc,
6555 RefQualifierIsLValueRef, RefQualifierLoc,
6556 /*MutableLoc=*/SourceLocation(),
6557 ESpecType, ESpecRange, DynamicExceptions.data(),
6558 DynamicExceptionRanges.data(), DynamicExceptions.size(),
6559 NoexceptExpr.isUsable() ? NoexceptExpr.get() : nullptr,
6560 ExceptionSpecTokens, DeclsInPrototype, StartLoc,
6561 LocalEndLoc, D, TrailingReturnType, &DS),
6562 std::move(FnAttrs), EndLoc);
6563 }
6564
6565 /// ParseRefQualifier - Parses a member function ref-qualifier. Returns
6566 /// true if a ref-qualifier is found.
6567 bool Parser::ParseRefQualifier(bool &RefQualifierIsLValueRef,
6568 SourceLocation &RefQualifierLoc) {
6569 if (Tok.isOneOf(tok::amp, tok::ampamp)) {
6570 Diag(Tok, getLangOpts().CPlusPlus11 ?
6571 diag::warn_cxx98_compat_ref_qualifier :
6572 diag::ext_ref_qualifier);
6573
6574 RefQualifierIsLValueRef = Tok.is(tok::amp);
6575 RefQualifierLoc = ConsumeToken();
6576 return true;
6577 }
6578 return false;
6579 }
6580
6581 /// isFunctionDeclaratorIdentifierList - This parameter list may have an
6582 /// identifier list form for a K&R-style function: void foo(a,b,c)
6583 ///
6584 /// Note that identifier-lists are only allowed for normal declarators, not for
6585 /// abstract-declarators.
6586 bool Parser::isFunctionDeclaratorIdentifierList() {
6587 return !getLangOpts().CPlusPlus
6588 && Tok.is(tok::identifier)
6589 && !TryAltiVecVectorToken()
6590 // K&R identifier lists can't have typedefs as identifiers, per C99
6591 // 6.7.5.3p11.
6592 && (TryAnnotateTypeOrScopeToken() || !Tok.is(tok::annot_typename))
6593 // Identifier lists follow a really simple grammar: the identifiers can
6594 // be followed *only* by a ", identifier" or ")". However, K&R
6595 // identifier lists are really rare in the brave new modern world, and
6596 // it is very common for someone to typo a type in a non-K&R style
6597 // list. If we are presented with something like: "void foo(intptr x,
6598 // float y)", we don't want to start parsing the function declarator as
6599 // though it is a K&R style declarator just because intptr is an
6600 // invalid type.
6601 //
6602 // To handle this, we check to see if the token after the first
6603 // identifier is a "," or ")". Only then do we parse it as an
6604 // identifier list.
6605 && (!Tok.is(tok::eof) &&
6606 (NextToken().is(tok::comma) || NextToken().is(tok::r_paren)));
6607 }
6608
6609 /// ParseFunctionDeclaratorIdentifierList - While parsing a function declarator
6610 /// we found a K&R-style identifier list instead of a typed parameter list.
6611 ///
6612 /// After returning, ParamInfo will hold the parsed parameters.
6613 ///
6614 /// identifier-list: [C99 6.7.5]
6615 /// identifier
6616 /// identifier-list ',' identifier
6617 ///
6618 void Parser::ParseFunctionDeclaratorIdentifierList(
6619 Declarator &D,
6620 SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo) {
6621 // If there was no identifier specified for the declarator, either we are in
6622 // an abstract-declarator, or we are in a parameter declarator which was found
6623 // to be abstract. In abstract-declarators, identifier lists are not valid:
6624 // diagnose this.
6625 if (!D.getIdentifier())
6626 Diag(Tok, diag::ext_ident_list_in_param);
6627
6628 // Maintain an efficient lookup of params we have seen so far.
6629 llvm::SmallSet<const IdentifierInfo*, 16> ParamsSoFar;
6630
6631 do {
6632 // If this isn't an identifier, report the error and skip until ')'.
6633 if (Tok.isNot(tok::identifier)) {
6634 Diag(Tok, diag::err_expected) << tok::identifier;
6635 SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch);
6636 // Forget we parsed anything.
6637 ParamInfo.clear();
6638 return;
6639 }
6640
6641 IdentifierInfo *ParmII = Tok.getIdentifierInfo();
6642
6643 // Reject 'typedef int y; int test(x, y)', but continue parsing.
6644 if (Actions.getTypeName(*ParmII, Tok.getLocation(), getCurScope()))
6645 Diag(Tok, diag::err_unexpected_typedef_ident) << ParmII;
6646
6647 // Verify that the argument identifier has not already been mentioned.
6648 if (!ParamsSoFar.insert(ParmII).second) {
6649 Diag(Tok, diag::err_param_redefinition) << ParmII;
6650 } else {
6651 // Remember this identifier in ParamInfo.
6652 ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
6653 Tok.getLocation(),
6654 nullptr));
6655 }
6656
6657 // Eat the identifier.
6658 ConsumeToken();
6659 // The list continues if we see a comma.
6660 } while (TryConsumeToken(tok::comma));
6661 }
6662
6663 /// ParseParameterDeclarationClause - Parse a (possibly empty) parameter-list
6664 /// after the opening parenthesis. This function will not parse a K&R-style
6665 /// identifier list.
6666 ///
6667 /// DeclContext is the context of the declarator being parsed. If FirstArgAttrs
6668 /// is non-null, then the caller parsed those attributes immediately after the
6669 /// open paren - they should be considered to be part of the first parameter.
6670 ///
6671 /// After returning, ParamInfo will hold the parsed parameters. EllipsisLoc will
6672 /// be the location of the ellipsis, if any was parsed.
6673 ///
6674 /// parameter-type-list: [C99 6.7.5]
6675 /// parameter-list
6676 /// parameter-list ',' '...'
6677 /// [C++] parameter-list '...'
6678 ///
6679 /// parameter-list: [C99 6.7.5]
6680 /// parameter-declaration
6681 /// parameter-list ',' parameter-declaration
6682 ///
6683 /// parameter-declaration: [C99 6.7.5]
6684 /// declaration-specifiers declarator
6685 /// [C++] declaration-specifiers declarator '=' assignment-expression
6686 /// [C++11] initializer-clause
6687 /// [GNU] declaration-specifiers declarator attributes
6688 /// declaration-specifiers abstract-declarator[opt]
6689 /// [C++] declaration-specifiers abstract-declarator[opt]
6690 /// '=' assignment-expression
6691 /// [GNU] declaration-specifiers abstract-declarator[opt] attributes
6692 /// [C++11] attribute-specifier-seq parameter-declaration
6693 ///
6694 void Parser::ParseParameterDeclarationClause(
6695 DeclaratorContext DeclaratorCtx,
6696 ParsedAttributes &FirstArgAttrs,
6697 SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo,
6698 SourceLocation &EllipsisLoc) {
6699
6700 // Avoid exceeding the maximum function scope depth.
6701 // See https://bugs.llvm.org/show_bug.cgi?id=19607
6702 // Note Sema::ActOnParamDeclarator calls ParmVarDecl::setScopeInfo with
6703 // getFunctionPrototypeDepth() - 1.
6704 if (getCurScope()->getFunctionPrototypeDepth() - 1 >
6705 ParmVarDecl::getMaxFunctionScopeDepth()) {
6706 Diag(Tok.getLocation(), diag::err_function_scope_depth_exceeded)
6707 << ParmVarDecl::getMaxFunctionScopeDepth();
6708 cutOffParsing();
6709 return;
6710 }
6711
6712 do {
6713 // FIXME: Issue a diagnostic if we parsed an attribute-specifier-seq
6714 // before deciding this was a parameter-declaration-clause.
6715 if (TryConsumeToken(tok::ellipsis, EllipsisLoc))
6716 break;
6717
6718 // Parse the declaration-specifiers.
6719 // Just use the ParsingDeclaration "scope" of the declarator.
6720 DeclSpec DS(AttrFactory);
6721
6722 // Parse any C++11 attributes.
6723 MaybeParseCXX11Attributes(DS.getAttributes());
6724
6725 // Skip any Microsoft attributes before a param.
6726 MaybeParseMicrosoftAttributes(DS.getAttributes());
6727
6728 SourceLocation DSStart = Tok.getLocation();
6729
6730 // If the caller parsed attributes for the first argument, add them now.
6731 // Take them so that we only apply the attributes to the first parameter.
6732 // FIXME: If we can leave the attributes in the token stream somehow, we can
6733 // get rid of a parameter (FirstArgAttrs) and this statement. It might be
6734 // too much hassle.
6735 DS.takeAttributesFrom(FirstArgAttrs);
6736
6737 ParseDeclarationSpecifiers(DS);
6738
6739
6740 // Parse the declarator. This is "PrototypeContext" or
6741 // "LambdaExprParameterContext", because we must accept either
6742 // 'declarator' or 'abstract-declarator' here.
6743 Declarator ParmDeclarator(
6744 DS, DeclaratorCtx == DeclaratorContext::RequiresExprContext
6745 ? DeclaratorContext::RequiresExprContext
6746 : DeclaratorCtx == DeclaratorContext::LambdaExprContext
6747 ? DeclaratorContext::LambdaExprParameterContext
6748 : DeclaratorContext::PrototypeContext);
6749 ParseDeclarator(ParmDeclarator);
6750
6751 // Parse GNU attributes, if present.
6752 MaybeParseGNUAttributes(ParmDeclarator);
6753
6754 if (Tok.is(tok::kw_requires)) {
6755 // User tried to define a requires clause in a parameter declaration,
6756 // which is surely not a function declaration.
6757 // void f(int (*g)(int, int) requires true);
6758 Diag(Tok,
6759 diag::err_requires_clause_on_declarator_not_declaring_a_function);
6760 ConsumeToken();
6761 Actions.CorrectDelayedTyposInExpr(
6762 ParseConstraintLogicalOrExpression(/*IsTrailingRequiresClause=*/true));
6763 }
6764
6765 // Remember this parsed parameter in ParamInfo.
6766 IdentifierInfo *ParmII = ParmDeclarator.getIdentifier();
6767
6768 // DefArgToks is used when the parsing of default arguments needs
6769 // to be delayed.
6770 std::unique_ptr<CachedTokens> DefArgToks;
6771
6772 // If no parameter was specified, verify that *something* was specified,
6773 // otherwise we have a missing type and identifier.
6774 if (DS.isEmpty() && ParmDeclarator.getIdentifier() == nullptr &&
6775 ParmDeclarator.getNumTypeObjects() == 0) {
6776 // Completely missing, emit error.
6777 Diag(DSStart, diag::err_missing_param);
6778 } else {
6779 // Otherwise, we have something. Add it and let semantic analysis try
6780 // to grok it and add the result to the ParamInfo we are building.
6781
6782 // Last chance to recover from a misplaced ellipsis in an attempted
6783 // parameter pack declaration.
6784 if (Tok.is(tok::ellipsis) &&
6785 (NextToken().isNot(tok::r_paren) ||
6786 (!ParmDeclarator.getEllipsisLoc().isValid() &&
6787 !Actions.isUnexpandedParameterPackPermitted())) &&
6788 Actions.containsUnexpandedParameterPacks(ParmDeclarator))
6789 DiagnoseMisplacedEllipsisInDeclarator(ConsumeToken(), ParmDeclarator);
6790
6791 // Inform the actions module about the parameter declarator, so it gets
6792 // added to the current scope.
6793 Decl *Param = Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator);
6794 // Parse the default argument, if any. We parse the default
6795 // arguments in all dialects; the semantic analysis in
6796 // ActOnParamDefaultArgument will reject the default argument in
6797 // C.
6798 if (Tok.is(tok::equal)) {
6799 SourceLocation EqualLoc = Tok.getLocation();
6800
6801 // Parse the default argument
6802 if (DeclaratorCtx == DeclaratorContext::MemberContext) {
6803 // If we're inside a class definition, cache the tokens
6804 // corresponding to the default argument. We'll actually parse
6805 // them when we see the end of the class definition.
6806 DefArgToks.reset(new CachedTokens);
6807
6808 SourceLocation ArgStartLoc = NextToken().getLocation();
6809 if (!ConsumeAndStoreInitializer(*DefArgToks, CIK_DefaultArgument)) {
6810 DefArgToks.reset();
6811 Actions.ActOnParamDefaultArgumentError(Param, EqualLoc);
6812 } else {
6813 Actions.ActOnParamUnparsedDefaultArgument(Param, EqualLoc,
6814 ArgStartLoc);
6815 }
6816 } else {
6817 // Consume the '='.
6818 ConsumeToken();
6819
6820 // The argument isn't actually potentially evaluated unless it is
6821 // used.
6822 EnterExpressionEvaluationContext Eval(
6823 Actions,
6824 Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed,
6825 Param);
6826
6827 ExprResult DefArgResult;
6828 if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
6829 Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
6830 DefArgResult = ParseBraceInitializer();
6831 } else
6832 DefArgResult = ParseAssignmentExpression();
6833 DefArgResult = Actions.CorrectDelayedTyposInExpr(DefArgResult);
6834 if (DefArgResult.isInvalid()) {
6835 Actions.ActOnParamDefaultArgumentError(Param, EqualLoc);
6836 SkipUntil(tok::comma, tok::r_paren, StopAtSemi | StopBeforeMatch);
6837 } else {
6838 // Inform the actions module about the default argument
6839 Actions.ActOnParamDefaultArgument(Param, EqualLoc,
6840 DefArgResult.get());
6841 }
6842 }
6843 }
6844
6845 ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
6846 ParmDeclarator.getIdentifierLoc(),
6847 Param, std::move(DefArgToks)));
6848 }
6849
6850 if (TryConsumeToken(tok::ellipsis, EllipsisLoc)) {
6851 if (!getLangOpts().CPlusPlus) {
6852 // We have ellipsis without a preceding ',', which is ill-formed
6853 // in C. Complain and provide the fix.
6854 Diag(EllipsisLoc, diag::err_missing_comma_before_ellipsis)
6855 << FixItHint::CreateInsertion(EllipsisLoc, ", ");
6856 } else if (ParmDeclarator.getEllipsisLoc().isValid() ||
6857 Actions.containsUnexpandedParameterPacks(ParmDeclarator)) {
6858 // It looks like this was supposed to be a parameter pack. Warn and
6859 // point out where the ellipsis should have gone.
6860 SourceLocation ParmEllipsis = ParmDeclarator.getEllipsisLoc();
6861 Diag(EllipsisLoc, diag::warn_misplaced_ellipsis_vararg)
6862 << ParmEllipsis.isValid() << ParmEllipsis;
6863 if (ParmEllipsis.isValid()) {
6864 Diag(ParmEllipsis,
6865 diag::note_misplaced_ellipsis_vararg_existing_ellipsis);
6866 } else {
6867 Diag(ParmDeclarator.getIdentifierLoc(),
6868 diag::note_misplaced_ellipsis_vararg_add_ellipsis)
6869 << FixItHint::CreateInsertion(ParmDeclarator.getIdentifierLoc(),
6870 "...")
6871 << !ParmDeclarator.hasName();
6872 }
6873 Diag(EllipsisLoc, diag::note_misplaced_ellipsis_vararg_add_comma)
6874 << FixItHint::CreateInsertion(EllipsisLoc, ", ");
6875 }
6876
6877 // We can't have any more parameters after an ellipsis.
6878 break;
6879 }
6880
6881 // If the next token is a comma, consume it and keep reading arguments.
6882 } while (TryConsumeToken(tok::comma));
6883 }
6884
6885 /// [C90] direct-declarator '[' constant-expression[opt] ']'
6886 /// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']'
6887 /// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']'
6888 /// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']'
6889 /// [C99] direct-declarator '[' type-qual-list[opt] '*' ']'
6890 /// [C++11] direct-declarator '[' constant-expression[opt] ']'
6891 /// attribute-specifier-seq[opt]
6892 void Parser::ParseBracketDeclarator(Declarator &D) {
6893 if (CheckProhibitedCXX11Attribute())
6894 return;
6895
6896 BalancedDelimiterTracker T(*this, tok::l_square);
6897 T.consumeOpen();
6898
6899 // C array syntax has many features, but by-far the most common is [] and [4].
6900 // This code does a fast path to handle some of the most obvious cases.
6901 if (Tok.getKind() == tok::r_square) {
6902 T.consumeClose();
6903 ParsedAttributes attrs(AttrFactory);
6904 MaybeParseCXX11Attributes(attrs);
6905
6906 // Remember that we parsed the empty array type.
6907 D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false, nullptr,
6908 T.getOpenLocation(),
6909 T.getCloseLocation()),
6910 std::move(attrs), T.getCloseLocation());
6911 return;
6912 } else if (Tok.getKind() == tok::numeric_constant &&
6913 GetLookAheadToken(1).is(tok::r_square)) {
6914 // [4] is very common. Parse the numeric constant expression.
6915 ExprResult ExprRes(Actions.ActOnNumericConstant(Tok, getCurScope()));
6916 ConsumeToken();
6917
6918 T.consumeClose();
6919 ParsedAttributes attrs(AttrFactory);
6920 MaybeParseCXX11Attributes(attrs);
6921
6922 // Remember that we parsed a array type, and remember its features.
6923 D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false, ExprRes.get(),
6924 T.getOpenLocation(),
6925 T.getCloseLocation()),
6926 std::move(attrs), T.getCloseLocation());
6927 return;
6928 } else if (Tok.getKind() == tok::code_completion) {
6929 Actions.CodeCompleteBracketDeclarator(getCurScope());
6930 return cutOffParsing();
6931 }
6932
6933 // If valid, this location is the position where we read the 'static' keyword.
6934 SourceLocation StaticLoc;
6935 TryConsumeToken(tok::kw_static, StaticLoc);
6936
6937 // If there is a type-qualifier-list, read it now.
6938 // Type qualifiers in an array subscript are a C99 feature.
6939 DeclSpec DS(AttrFactory);
6940 ParseTypeQualifierListOpt(DS, AR_CXX11AttributesParsed);
6941
6942 // If we haven't already read 'static', check to see if there is one after the
6943 // type-qualifier-list.
6944 if (!StaticLoc.isValid())
6945 TryConsumeToken(tok::kw_static, StaticLoc);
6946
6947 // Handle "direct-declarator [ type-qual-list[opt] * ]".
6948 bool isStar = false;
6949 ExprResult NumElements;
6950
6951 // Handle the case where we have '[*]' as the array size. However, a leading
6952 // star could be the start of an expression, for example 'X[*p + 4]'. Verify
6953 // the token after the star is a ']'. Since stars in arrays are
6954 // infrequent, use of lookahead is not costly here.
6955 if (Tok.is(tok::star) && GetLookAheadToken(1).is(tok::r_square)) {
6956 ConsumeToken(); // Eat the '*'.
6957
6958 if (StaticLoc.isValid()) {
6959 Diag(StaticLoc, diag::err_unspecified_vla_size_with_static);
6960 StaticLoc = SourceLocation(); // Drop the static.
6961 }
6962 isStar = true;
6963 } else if (Tok.isNot(tok::r_square)) {
6964 // Note, in C89, this production uses the constant-expr production instead
6965 // of assignment-expr. The only difference is that assignment-expr allows
6966 // things like '=' and '*='. Sema rejects these in C89 mode because they
6967 // are not i-c-e's, so we don't need to distinguish between the two here.
6968
6969 // Parse the constant-expression or assignment-expression now (depending
6970 // on dialect).
6971 if (getLangOpts().CPlusPlus) {
6972 NumElements = ParseConstantExpression();
6973 } else {
6974 EnterExpressionEvaluationContext Unevaluated(
6975 Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
6976 NumElements =
6977 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
6978 }
6979 } else {
6980 if (StaticLoc.isValid()) {
6981 Diag(StaticLoc, diag::err_unspecified_size_with_static);
6982 StaticLoc = SourceLocation(); // Drop the static.
6983 }
6984 }
6985
6986 // If there was an error parsing the assignment-expression, recover.
6987 if (NumElements.isInvalid()) {
6988 D.setInvalidType(true);
6989 // If the expression was invalid, skip it.
6990 SkipUntil(tok::r_square, StopAtSemi);
6991 return;
6992 }
6993
6994 T.consumeClose();
6995
6996 MaybeParseCXX11Attributes(DS.getAttributes());
6997
6998 // Remember that we parsed a array type, and remember its features.
6999 D.AddTypeInfo(
7000 DeclaratorChunk::getArray(DS.getTypeQualifiers(), StaticLoc.isValid(),
7001 isStar, NumElements.get(), T.getOpenLocation(),
7002 T.getCloseLocation()),
7003 std::move(DS.getAttributes()), T.getCloseLocation());
7004 }
7005
7006 /// Diagnose brackets before an identifier.
7007 void Parser::ParseMisplacedBracketDeclarator(Declarator &D) {
7008 assert(Tok.is(tok::l_square) && "Missing opening bracket");
7009 assert(!D.mayOmitIdentifier() && "Declarator cannot omit identifier");
7010
7011 SourceLocation StartBracketLoc = Tok.getLocation();
7012 Declarator TempDeclarator(D.getDeclSpec(), D.getContext());
7013
7014 while (Tok.is(tok::l_square)) {
7015 ParseBracketDeclarator(TempDeclarator);
7016 }
7017
7018 // Stuff the location of the start of the brackets into the Declarator.
7019 // The diagnostics from ParseDirectDeclarator will make more sense if
7020 // they use this location instead.
7021 if (Tok.is(tok::semi))
7022 D.getName().EndLocation = StartBracketLoc;
7023
7024 SourceLocation SuggestParenLoc = Tok.getLocation();
7025
7026 // Now that the brackets are removed, try parsing the declarator again.
7027 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
7028
7029 // Something went wrong parsing the brackets, in which case,
7030 // ParseBracketDeclarator has emitted an error, and we don't need to emit
7031 // one here.
7032 if (TempDeclarator.getNumTypeObjects() == 0)
7033 return;
7034
7035 // Determine if parens will need to be suggested in the diagnostic.
7036 bool NeedParens = false;
7037 if (D.getNumTypeObjects() != 0) {
7038 switch (D.getTypeObject(D.getNumTypeObjects() - 1).Kind) {
7039 case DeclaratorChunk::Pointer:
7040 case DeclaratorChunk::Reference:
7041 case DeclaratorChunk::BlockPointer:
7042 case DeclaratorChunk::MemberPointer:
7043 case DeclaratorChunk::Pipe:
7044 NeedParens = true;
7045 break;
7046 case DeclaratorChunk::Array:
7047 case DeclaratorChunk::Function:
7048 case DeclaratorChunk::Paren:
7049 break;
7050 }
7051 }
7052
7053 if (NeedParens) {
7054 // Create a DeclaratorChunk for the inserted parens.
7055 SourceLocation EndLoc = PP.getLocForEndOfToken(D.getEndLoc());
7056 D.AddTypeInfo(DeclaratorChunk::getParen(SuggestParenLoc, EndLoc),
7057 SourceLocation());
7058 }
7059
7060 // Adding back the bracket info to the end of the Declarator.
7061 for (unsigned i = 0, e = TempDeclarator.getNumTypeObjects(); i < e; ++i) {
7062 const DeclaratorChunk &Chunk = TempDeclarator.getTypeObject(i);
7063 D.AddTypeInfo(Chunk, SourceLocation());
7064 }
7065
7066 // The missing identifier would have been diagnosed in ParseDirectDeclarator.
7067 // If parentheses are required, always suggest them.
7068 if (!D.getIdentifier() && !NeedParens)
7069 return;
7070
7071 SourceLocation EndBracketLoc = TempDeclarator.getEndLoc();
7072
7073 // Generate the move bracket error message.
7074 SourceRange BracketRange(StartBracketLoc, EndBracketLoc);
7075 SourceLocation EndLoc = PP.getLocForEndOfToken(D.getEndLoc());
7076
7077 if (NeedParens) {
7078 Diag(EndLoc, diag::err_brackets_go_after_unqualified_id)
7079 << getLangOpts().CPlusPlus
7080 << FixItHint::CreateInsertion(SuggestParenLoc, "(")
7081 << FixItHint::CreateInsertion(EndLoc, ")")
7082 << FixItHint::CreateInsertionFromRange(
7083 EndLoc, CharSourceRange(BracketRange, true))
7084 << FixItHint::CreateRemoval(BracketRange);
7085 } else {
7086 Diag(EndLoc, diag::err_brackets_go_after_unqualified_id)
7087 << getLangOpts().CPlusPlus
7088 << FixItHint::CreateInsertionFromRange(
7089 EndLoc, CharSourceRange(BracketRange, true))
7090 << FixItHint::CreateRemoval(BracketRange);
7091 }
7092 }
7093
7094 /// [GNU] typeof-specifier:
7095 /// typeof ( expressions )
7096 /// typeof ( type-name )
7097 /// [GNU/C++] typeof unary-expression
7098 ///
7099 void Parser::ParseTypeofSpecifier(DeclSpec &DS) {
7100 assert(Tok.is(tok::kw_typeof) && "Not a typeof specifier");
7101 Token OpTok = Tok;
7102 SourceLocation StartLoc = ConsumeToken();
7103
7104 const bool hasParens = Tok.is(tok::l_paren);
7105
7106 EnterExpressionEvaluationContext Unevaluated(
7107 Actions, Sema::ExpressionEvaluationContext::Unevaluated,
7108 Sema::ReuseLambdaContextDecl);
7109
7110 bool isCastExpr;
7111 ParsedType CastTy;
7112 SourceRange CastRange;
7113 ExprResult Operand = Actions.CorrectDelayedTyposInExpr(
7114 ParseExprAfterUnaryExprOrTypeTrait(OpTok, isCastExpr, CastTy, CastRange));
7115 if (hasParens)
7116 DS.setTypeofParensRange(CastRange);
7117
7118 if (CastRange.getEnd().isInvalid())
7119 // FIXME: Not accurate, the range gets one token more than it should.
7120 DS.SetRangeEnd(Tok.getLocation());
7121 else
7122 DS.SetRangeEnd(CastRange.getEnd());
7123
7124 if (isCastExpr) {
7125 if (!CastTy) {
7126 DS.SetTypeSpecError();
7127 return;
7128 }
7129
7130 const char *PrevSpec = nullptr;
7131 unsigned DiagID;
7132 // Check for duplicate type specifiers (e.g. "int typeof(int)").
7133 if (DS.SetTypeSpecType(DeclSpec::TST_typeofType, StartLoc, PrevSpec,
7134 DiagID, CastTy,
7135 Actions.getASTContext().getPrintingPolicy()))
7136 Diag(StartLoc, DiagID) << PrevSpec;
7137 return;
7138 }
7139
7140 // If we get here, the operand to the typeof was an expression.
7141 if (Operand.isInvalid()) {
7142 DS.SetTypeSpecError();
7143 return;
7144 }
7145
7146 // We might need to transform the operand if it is potentially evaluated.
7147 Operand = Actions.HandleExprEvaluationContextForTypeof(Operand.get());
7148 if (Operand.isInvalid()) {
7149 DS.SetTypeSpecError();
7150 return;
7151 }
7152
7153 const char *PrevSpec = nullptr;
7154 unsigned DiagID;
7155 // Check for duplicate type specifiers (e.g. "int typeof(int)").
7156 if (DS.SetTypeSpecType(DeclSpec::TST_typeofExpr, StartLoc, PrevSpec,
7157 DiagID, Operand.get(),
7158 Actions.getASTContext().getPrintingPolicy()))
7159 Diag(StartLoc, DiagID) << PrevSpec;
7160 }
7161
7162 /// [C11] atomic-specifier:
7163 /// _Atomic ( type-name )
7164 ///
7165 void Parser::ParseAtomicSpecifier(DeclSpec &DS) {
7166 assert(Tok.is(tok::kw__Atomic) && NextToken().is(tok::l_paren) &&
7167 "Not an atomic specifier");
7168
7169 SourceLocation StartLoc = ConsumeToken();
7170 BalancedDelimiterTracker T(*this, tok::l_paren);
7171 if (T.consumeOpen())
7172 return;
7173
7174 TypeResult Result = ParseTypeName();
7175 if (Result.isInvalid()) {
7176 SkipUntil(tok::r_paren, StopAtSemi);
7177 return;
7178 }
7179
7180 // Match the ')'
7181 T.consumeClose();
7182
7183 if (T.getCloseLocation().isInvalid())
7184 return;
7185
7186 DS.setTypeofParensRange(T.getRange());
7187 DS.SetRangeEnd(T.getCloseLocation());
7188
7189 const char *PrevSpec = nullptr;
7190 unsigned DiagID;
7191 if (DS.SetTypeSpecType(DeclSpec::TST_atomic, StartLoc, PrevSpec,
7192 DiagID, Result.get(),
7193 Actions.getASTContext().getPrintingPolicy()))
7194 Diag(StartLoc, DiagID) << PrevSpec;
7195 }
7196
7197 /// TryAltiVecVectorTokenOutOfLine - Out of line body that should only be called
7198 /// from TryAltiVecVectorToken.
7199 bool Parser::TryAltiVecVectorTokenOutOfLine() {
7200 Token Next = NextToken();
7201 switch (Next.getKind()) {
7202 default: return false;
7203 case tok::kw_short:
7204 case tok::kw_long:
7205 case tok::kw_signed:
7206 case tok::kw_unsigned:
7207 case tok::kw_void:
7208 case tok::kw_char:
7209 case tok::kw_int:
7210 case tok::kw_float:
7211 case tok::kw_double:
7212 case tok::kw_bool:
7213 case tok::kw___bool:
7214 case tok::kw___pixel:
7215 Tok.setKind(tok::kw___vector);
7216 return true;
7217 case tok::identifier:
7218 if (Next.getIdentifierInfo() == Ident_pixel) {
7219 Tok.setKind(tok::kw___vector);
7220 return true;
7221 }
7222 if (Next.getIdentifierInfo() == Ident_bool) {
7223 Tok.setKind(tok::kw___vector);
7224 return true;
7225 }
7226 return false;
7227 }
7228 }
7229
7230 bool Parser::TryAltiVecTokenOutOfLine(DeclSpec &DS, SourceLocation Loc,
7231 const char *&PrevSpec, unsigned &DiagID,
7232 bool &isInvalid) {
7233 const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
7234 if (Tok.getIdentifierInfo() == Ident_vector) {
7235 Token Next = NextToken();
7236 switch (Next.getKind()) {
7237 case tok::kw_short:
7238 case tok::kw_long:
7239 case tok::kw_signed:
7240 case tok::kw_unsigned:
7241 case tok::kw_void:
7242 case tok::kw_char:
7243 case tok::kw_int:
7244 case tok::kw_float:
7245 case tok::kw_double:
7246 case tok::kw_bool:
7247 case tok::kw___bool:
7248 case tok::kw___pixel:
7249 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID, Policy);
7250 return true;
7251 case tok::identifier:
7252 if (Next.getIdentifierInfo() == Ident_pixel) {
7253 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID,Policy);
7254 return true;
7255 }
7256 if (Next.getIdentifierInfo() == Ident_bool) {
7257 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID,Policy);
7258 return true;
7259 }
7260 break;
7261 default:
7262 break;
7263 }
7264 } else if ((Tok.getIdentifierInfo() == Ident_pixel) &&
7265 DS.isTypeAltiVecVector()) {
7266 isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID, Policy);
7267 return true;
7268 } else if ((Tok.getIdentifierInfo() == Ident_bool) &&
7269 DS.isTypeAltiVecVector()) {
7270 isInvalid = DS.SetTypeAltiVecBool(true, Loc, PrevSpec, DiagID, Policy);
7271 return true;
7272 }
7273 return false;
7274 }
clang::DeclSpec::ClearFunctionSpecs
void ClearFunctionSpecs()
Definition: DeclSpec.h:597
clang::Sema::NC_DependentNonType
The name denotes a member of a dependent type that could not be resolved.
Definition: Sema.h:1962
ParsedTemplate.h
ASTContext.h
Defines the clang::ASTContext interface.
isAttributeLateParsed
static bool isAttributeLateParsed(const IdentifierInfo &II)
isAttributeLateParsed - Return true if the attribute has arguments that require late parsing...
Definition: ParseDecl.cpp:80
clang::Sema::NC_VarTemplate
The name was classified as a variable template name.
Definition: Sema.h:1969
clang::Sema::SkipBodyInfo::CheckSameAsPrevious
bool CheckSameAsPrevious
Definition: Sema.h:1903
FindLocsWithCommonFileID
static bool FindLocsWithCommonFileID(Preprocessor &PP, SourceLocation StartLoc, SourceLocation EndLoc)
Check if the a start and end source location expand to the same macro.
Definition: ParseDecl.cpp:89
clang::Qualifiers::fromCVRUMask
static Qualifiers fromCVRUMask(unsigned CVRU)
Definition: Type.h:242
clang::Declarator::getFunctionTypeInfo
DeclaratorChunk::FunctionTypeInfo & getFunctionTypeInfo()
getFunctionTypeInfo - Retrieves the function type info object (looking through parentheses).
Definition: DeclSpec.h:2313
clang::EST_None
no exception specification
Definition: ExceptionSpecificationType.h:21
clang::DynamicInitKind::Initializer
clang::OpaquePtr::get
PtrTy get() const
Definition: Ownership.h:80
clang::Parser::ParseExpression
ExprResult ParseExpression(TypeCastState isTypeCast=NotTypeCast)
Simple precedence-based parser for binary/ternary operators.
Definition: ParseExpr.cpp:123
clang::DeclaratorContext::PrototypeContext
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:654
clang::Scope::FunctionPrototypeScope
This is a scope that corresponds to the parameters within a function prototype.
Definition: Scope.h:81
clang::Parser::getEndOfPreviousToken
SourceLocation getEndOfPreviousToken()
Definition: Parser.h:498
clang::Preprocessor::getIdentifierInfo
IdentifierInfo * getIdentifierInfo(StringRef Name) const
Return information about the specified preprocessor identifier token.
Definition: Preprocessor.h:1170
clang::UnqualifiedId::getSourceRange
SourceRange getSourceRange() const LLVM_READONLY
Return the source range that covers this unqualified-id.
Definition: DeclSpec.h:1160
clang::DeclSpec::TSS_unsigned
static const TSS TSS_unsigned
Definition: DeclSpec.h:268
clang::UnqualifiedId::StartLocation
SourceLocation StartLocation
The location of the first token that describes this unqualified-id, which will be the location of the...
Definition: DeclSpec.h:1018
clang::Sema::PCC_Class
Code completion occurs within a class, struct, or union.
Definition: Sema.h:11490
clang::Declarator::getTypeObject
const DeclaratorChunk & getTypeObject(unsigned i) const
Return the specified TypeInfo from this declarator.
Definition: DeclSpec.h:2224
clang::ParsedAttributesView::size
SizeType size() const
Definition: ParsedAttr.h:734
clang::DeclSpec::SetTypeQual
bool SetTypeQual(TQ T, SourceLocation Loc)
Definition: DeclSpec.cpp:923
clang::Sema::LookupOrdinaryName
Ordinary name lookup, which finds ordinary names (functions, variables, typedefs, etc...
Definition: Sema.h:3463
clang::TemplateIdAnnotation::Name
IdentifierInfo * Name
FIXME: Temporarily stores the name of a specialization.
Definition: ParsedTemplate.h:163
clang::DeclSpec::TST_wchar
static const TST TST_wchar
Definition: DeclSpec.h:275
clang::ArgsUnion
llvm::PointerUnion< Expr *, IdentifierLoc * > ArgsUnion
A union of the various pointer types that can be passed to an ParsedAttr as an argument.
Definition: ParsedAttr.h:105
Parser.h
clang::Sema::NC_UndeclaredTemplate
The name was classified as an ADL-only function template name.
Definition: Sema.h:1973
clang::Sema::TagUseKind
TagUseKind
Definition: Sema.h:2565
attributeHasVariadicIdentifierArg
static bool attributeHasVariadicIdentifierArg(const IdentifierInfo &II)
Determine whether the given attribute has a variadic identifier argument.
Definition: ParseDecl.cpp:256
clang::Token::is
bool is(tok::TokenKind K) const
is/isNot - Predicates to check if this token is a specific kind, as in "if (Tok.is(tok::l_brace)) {...
Definition: Token.h:97
clang::BalancedDelimiterTracker::consumeClose
bool consumeClose()
Definition: RAIIObjectsForParser.h:446
clang::CXXScopeSpec::isEmpty
bool isEmpty() const
No scope specifier.
Definition: DeclSpec.h:189
clang::DeclSpec::TST_typeofExpr
static const TST TST_typeofExpr
Definition: DeclSpec.h:299
clang::DeclSpec::TST_char16
static const TST TST_char16
Definition: DeclSpec.h:277
clang::Decl
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:88
clang::DeclaratorContext::MemberContext
clang::AttributeCommonInfo::Syntax
Syntax
The style used to specify an attribute.
Definition: AttributeCommonInfo.h:25
clang::ParsingDeclRAIIObject
RAII object used to inform the actions that we&#39;re currently parsing a declaration.
Definition: RAIIObjectsForParser.h:90
clang::DeclSpec::SCS_mutable
Definition: DeclSpec.h:240
clang::AttrSyntax::Declspec
Is the identifier known as a __declspec-style attribute?
clang::SuppressAccessChecks
A RAII object used to temporarily suppress access-like checking.
Definition: RAIIObjectsForParser.h:44
DeclTemplate.h
Defines the C++ template declaration subclasses.
P
StringRef P
Definition: ASTMatchersInternal.cpp:485
clang::IdentifierLoc::Ident
IdentifierInfo * Ident
Definition: ParsedAttr.h:97
clang::DeclSpec::SCS_auto
Definition: DeclSpec.h:237
clang::Type
The base class of the type hierarchy.
Definition: Type.h:1450
clang::Sema::NC_Error
Classification failed; an error has been produced.
Definition: Sema.h:1946
clang::Parser::TryAnnotateCXXScopeToken
bool TryAnnotateCXXScopeToken(bool EnteringContext=false)
TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only annotates C++ scope specifiers and ...
Definition: Parser.cpp:2029
clang::BalancedDelimiterTracker::getCloseLocation
SourceLocation getCloseLocation() const
Definition: RAIIObjectsForParser.h:428
clang::Scope::FnScope
This indicates that the scope corresponds to a function, which means that labels are set here...
Definition: Scope.h:47
clang::Declarator::getBeginLoc
SourceLocation getBeginLoc() const LLVM_READONLY
Definition: DeclSpec.h:1931
clang::DeclaratorChunk
One instance of this struct is used for each type in a declarator that is parsed. ...
Definition: DeclSpec.h:1174
clang::VarTemplateDecl
Declaration of a variable template.
Definition: DeclTemplate.h:3070
clang::Declarator::isFunctionDeclarator
bool isFunctionDeclarator(unsigned &idx) const
isFunctionDeclarator - This method returns true if the declarator is a function declarator (looking t...
Definition: DeclSpec.h:2282
clang::FixItHint::CreateInsertionFromRange
static FixItHint CreateInsertionFromRange(SourceLocation InsertionLoc, CharSourceRange FromRange, bool BeforePreviousInsertions=false)
Create a code modification hint that inserts the given code from FromRange at a specific location...
Definition: Diagnostic.h:105
clang::DeclSpec::getSpecifierName
static const char * getSpecifierName(DeclSpec::TST T, const PrintingPolicy &Policy)
Turn a type-specifier-type into a string like "_Bool" or "union".
Definition: DeclSpec.cpp:520
clang::Declarator::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclSpec.h:1932
clang::Decl::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclBase.h:425
clang::AccessSpecifier
AccessSpecifier
A C++ access specifier (public, private, protected), plus the special value "none" which means differ...
Definition: Specifiers.h:113
clang::TemplateIdAnnotation::Kind
TemplateNameKind Kind
The kind of template that Template refers to.
Definition: ParsedTemplate.h:173
clang::Sema::ActOnExitFunctionContext
void ActOnExitFunctionContext()
Definition: SemaDecl.cpp:1398
clang::ExplicitSpecifier
Store information needed for an explicit specifier.
Definition: DeclCXX.h:1787
clang::OpaquePtr< QualType >
clang::Parser
Parser - This implements a parser for the C family of languages.
Definition: Parser.h:57
clang::DeclSpec::SetTypeAltiVecBool
bool SetTypeAltiVecBool(bool isAltiVecBool, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
Definition: DeclSpec.cpp:882
clang::DeclSpec::hasExplicitSpecifier
bool hasExplicitSpecifier() const
Definition: DeclSpec.h:584
clang::DeclSpec::getThreadStorageClassSpec
TSCS getThreadStorageClassSpec() const
Definition: DeclSpec.h:448
clang::Declarator::SetIdentifier
void SetIdentifier(IdentifierInfo *Id, SourceLocation IdLoc)
Set the name of this declarator to be the given identifier.
Definition: DeclSpec.h:2181
clang::IdentifierLoc::create
static IdentifierLoc * create(ASTContext &Ctx, SourceLocation Loc, IdentifierInfo *Ident)
Definition: ParsedAttr.cpp:28
clang::CXXScopeSpec::getEndLoc
SourceLocation getEndLoc() const
Definition: DeclSpec.h:73
clang::Sema::NameClassification::getKind
NameClassificationKind getKind() const
Definition: Sema.h:2052
clang::DeclSpec::SCS_private_extern
Definition: DeclSpec.h:239
clang::Lexer::isAtStartOfMacroExpansion
static bool isAtStartOfMacroExpansion(SourceLocation loc, const SourceManager &SM, const LangOptions &LangOpts, SourceLocation *MacroBegin=nullptr)
Returns true if the given MacroID location points at the first token of the macro expansion...
Definition: Lexer.cpp:800
clang::EnterExpressionEvaluationContext
RAII object that enters a new expression evaluation context.
Definition: Sema.h:12068
clang::Sema::ActOnStartDelayedMemberDeclarations
void ActOnStartDelayedMemberDeclarations(Scope *S, Decl *Record)
Definition: SemaDeclCXX.cpp:9714
clang::Declarator
Information about one declarator, including the parsed type information and the identifier.
Definition: DeclSpec.h:1792
clang::DeclSpec::setTypeofParensRange
void setTypeofParensRange(SourceRange range)
Definition: DeclSpec.h:527
clang::DeclSpec::getParsedSpecifiers
unsigned getParsedSpecifiers() const
Return a bitmask of which flavors of specifiers this DeclSpec includes.
Definition: DeclSpec.cpp:436
clang::TST_bool
Definition: Specifiers.h:77
clang::TypeSpecifierType
TypeSpecifierType
Specifies the kind of type.
Definition: Specifiers.h:60
clang::LangAS
LangAS
Defines the address space values used by the address space qualifier of QualType. ...
Definition: AddressSpaces.h:25
clang::DeclSpec::TST_interface
static const TST TST_interface
Definition: DeclSpec.h:295
clang::Sema::CXXThisScopeRAII
RAII object used to temporarily allow the C++ &#39;this&#39; expression to be used, with the given qualifiers...
Definition: Sema.h:5646
clang::DeclSpec::TST_char
static const TST TST_char
Definition: DeclSpec.h:274
clang::DeclaratorContext::ForContext
clang::DeclSpec::hasTypeSpecifier
bool hasTypeSpecifier() const
Return true if any type-specifier has been found.
Definition: DeclSpec.h:624
clang::PrintingPolicy
Describes how types, statements, expressions, and declarations should be printed. ...
Definition: PrettyPrinter.h:47
clang::Sema::PCC_ObjCImplementation
Code completion occurs within an Objective-C implementation or category implementation.
Definition: Sema.h:11496
clang::ParenBraceBracketBalancer
RAII object that makes sure paren/bracket/brace count is correct after declaration/statement parsing...
Definition: RAIIObjectsForParser.h:343
clang::CPlusPlus11
Definition: LangStandard.h:48
clang::Parser::ObjCDeclContextSwitch
friend class ObjCDeclContextSwitch
Definition: Parser.h:62
clang::Token::isAnnotation
bool isAnnotation() const
Return true if this is any of tok::annot_* kind tokens.
Definition: Token.h:120
clang::ParmVarDecl
Represents a parameter to a function.
Definition: Decl.h:1595
clang::Sema::NC_ContextIndependentExpr
The name was classified as a non-type, and an expression representing that name has been formed...
Definition: Sema.h:1965
clang::ColonProtectionRAIIObject
ColonProtectionRAIIObject - This sets the Parser::ColonIsSacred bool and restores it when destroyed...
Definition: RAIIObjectsForParser.h:270
clang::Token::getKind
tok::TokenKind getKind() const
Definition: Token.h:92
clang::DeclSpec::SetConstexprSpec
bool SetConstexprSpec(ConstexprSpecKind ConstexprKind, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:1046
clang::Parser::SkipUntil
bool SkipUntil(tok::TokenKind T, SkipUntilFlags Flags=static_cast< SkipUntilFlags >(0))
SkipUntil - Read tokens until we get to the specified token, then consume it (unless StopBeforeMatch ...
Definition: Parser.h:1118
ParseDiagnostic.h
clang::Declarator::setTrailingRequiresClause
void setTrailingRequiresClause(Expr *TRC)
Sets a trailing requires clause for this declarator.
Definition: DeclSpec.h:2441
clang::Declarator::mayOmitIdentifier
bool mayOmitIdentifier() const
mayOmitIdentifier - Return true if the identifier is either optional or not allowed.
Definition: DeclSpec.h:1979
clang::Qualifiers
The collection of all-type qualifiers we support.
Definition: Type.h:143
clang::TemplateIdAnnotation
Information about a template-id annotation token.
Definition: ParsedTemplate.h:150
clang::DeclSpec::TQ_restrict
Definition: DeclSpec.h:316
clang::TypeLoc
Base wrapper for a particular "section" of type source info.
Definition: TypeLoc.h:58
clang::DeclSpec::getFriendSpecLoc
SourceLocation getFriendSpecLoc() const
Definition: DeclSpec.h:741
clang::RecordDecl
Represents a struct/union/class.
Definition: Decl.h:3748
clang::Parser::NextToken
const Token & NextToken()
NextToken - This peeks ahead one token and returns it without consuming it.
Definition: Parser.h:759
clang::Parser::TryConsumeToken
bool TryConsumeToken(tok::TokenKind Expected)
Definition: Parser.h:460
clang::DeclaratorContext::TrailingReturnContext
clang::DeclSpec::TSC_imaginary
Definition: DeclSpec.h:260
clang::DeclSpec::SCS_static
Definition: DeclSpec.h:236
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:57
clang::CharSourceRange::getBegin
SourceLocation getBegin() const
Definition: SourceLocation.h:280
clang::DeclSpec::TST_decimal32
static const TST TST_decimal32
Definition: DeclSpec.h:289
clang::BalancedDelimiterTracker::consumeOpen
bool consumeOpen()
Definition: RAIIObjectsForParser.h:431
clang::IdentifierInfo::isStr
bool isStr(const char(&Str)[StrLen]) const
Return true if this is the identifier for the specified string.
Definition: IdentifierTable.h:136
attributeHasIdentifierArg
static bool attributeHasIdentifierArg(const IdentifierInfo &II)
Determine whether the given attribute has an identifier argument.
Definition: ParseDecl.cpp:247
clang::DeclSpec::TST_char8
static const TST TST_char8
Definition: DeclSpec.h:276
clang::TNK_Undeclared_template
Lookup for the name failed, but we&#39;re assuming it was a template name anyway.
Definition: TemplateKinds.h:50
llvm::Optional
Definition: LLVM.h:37
clang::DeclSpec::getTypeSpecTypeLoc
SourceLocation getTypeSpecTypeLoc() const
Definition: DeclSpec.h:517
clang::DeclaratorChunk::Function
Definition: DeclSpec.h:1176
clang::ParsingDeclarator::complete
void complete(Decl *D)
Definition: RAIIObjectsForParser.h:221
clang::DeclSpec::TST_class
static const TST TST_class
Definition: DeclSpec.h:296
clang::DeclSpec::setFunctionSpecExplicit
bool setFunctionSpecExplicit(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, ExplicitSpecifier ExplicitSpec, SourceLocation CloseParenLoc)
Definition: DeclSpec.cpp:979
clang::Sema::ConvertDeclToDeclGroup
DeclGroupPtrTy ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType=nullptr)
Definition: SemaDecl.cpp:55
clang::DeclSpec::TST_double
static const TST TST_double
Definition: DeclSpec.h:283
clang::Sema::PCC_MemberTemplate
Code completion occurs following one or more template headers within a class.
Definition: Sema.h:11505
clang::DeclSpec::setFunctionSpecVirtual
bool setFunctionSpecVirtual(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:964
clang::UnresolvedSetIterator
The iterator over UnresolvedSets.
Definition: UnresolvedSet.h:32
clang::Decl::getSourceRange
virtual SourceRange getSourceRange() const LLVM_READONLY
Source range that this declaration covers.
Definition: DeclBase.h:417
clang::Token
Token - This structure provides full information about a lexed token.
Definition: Token.h:34
clang::DeclSpec::TST_enum
static const TST TST_enum
Definition: DeclSpec.h:292
clang::Token::setKind
void setKind(tok::TokenKind K)
Definition: Token.h:93
clang::BalancedDelimiterTracker
RAII class that helps handle the parsing of an open/close delimiter pair, such as braces { ...
Definition: RAIIObjectsForParser.h:385
clang::Sema::ActOnFinishDelayedAttribute
void ActOnFinishDelayedAttribute(Scope *S, Decl *D, ParsedAttributes &Attrs)
ActOnFinishDelayedAttribute - Invoked when we have finished parsing an attribute for which parsing is...
Definition: SemaDecl.cpp:14230
clang::DeclSpec::TSC_complex
Definition: DeclSpec.h:261
clang::DeclSpec::hasTagDefinition
bool hasTagDefinition() const
Definition: DeclSpec.cpp:427
clang::DeclSpec::ClearStorageClassSpecs
void ClearStorageClassSpecs()
Definition: DeclSpec.h:461
clang::DeclaratorChunk::getPointer
static DeclaratorChunk getPointer(unsigned TypeQuals, SourceLocation Loc, SourceLocation ConstQualLoc, SourceLocation VolatileQualLoc, SourceLocation RestrictQualLoc, SourceLocation AtomicQualLoc, SourceLocation UnalignedQualLoc)
Return a DeclaratorChunk for a pointer.
Definition: DeclSpec.h:1571
clang::LangOptions
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:53
clang::Preprocessor::getLangOpts
const LangOptions & getLangOpts() const
Definition: Preprocessor.h:907
clang::OpaquePtr::getAsOpaquePtr
void * getAsOpaquePtr() const
Definition: Ownership.h:90
clang::DeclSpec::TST_accum
static const TST TST_accum
Definition: DeclSpec.h:285
llvm::SmallVectorImpl
Definition: LLVM.h:36
clang::DeclSpec::SetTypeAltiVecPixel
bool SetTypeAltiVecPixel(bool isAltiVecPixel, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
Definition: DeclSpec.cpp:865
clang::Declarator::isInvalidType
bool isInvalidType() const
Definition: DeclSpec.h:2530
clang::Sema::NC_Type
The name was classified as a type.
Definition: Sema.h:1950
clang::Sema::PCC_Namespace
Code completion occurs at top-level or namespace context.
Definition: Sema.h:11488
clang::Sema::NC_TypeTemplate
The name was classified as a template whose specializations are types.
Definition: Sema.h:1967
clang::Scope::ControlScope
The controlling scope in a if/switch/while/for statement.
Definition: Scope.h:62
clang::AttributeCommonInfo::AS_GNU
attribute((...))
Definition: AttributeCommonInfo.h:27
Attributes.h
clang::Token::isObjCAtKeyword
bool isObjCAtKeyword(tok::ObjCKeywordKind objcKey) const
Return true if we have an ObjC keyword identifier.
Definition: Lexer.cpp:57
clang::Scope::BlockScope
This is a scope that corresponds to a block/closure object.
Definition: Scope.h:71
PrettyDeclStackTrace.h
clang::Declarator::isFunctionDeclaratorAFunctionDeclaration
bool isFunctionDeclaratorAFunctionDeclaration() const
Return true if a function declarator at this position would be a function declaration.
Definition: DeclSpec.h:2419
clang::Parser::getTypeAnnotation
static ParsedType getTypeAnnotation(const Token &Tok)
getTypeAnnotation - Read a parsed type out of an annotation token.
Definition: Parser.h:764
clang::DeclSpec::TQ_unaligned
Definition: DeclSpec.h:318
clang::CSK_constinit
Definition: Specifiers.h:36
clang::LookupResult
Represents the results of name lookup.
Definition: Lookup.h:46
clang::ActionResult::get
PtrTy get() const
Definition: Ownership.h:170
clang::Declarator::setExtension
void setExtension(bool Val=true)
Definition: DeclSpec.h:2520
clang::format::FormatToken::isNot
bool isNot(T Kind) const
Definition: FormatToken.h:330
clang::Sema::startOpenMPCXXRangeFor
void startOpenMPCXXRangeFor()
If the current region is a range loop-based region, mark the start of the loop construct.
Definition: SemaOpenMP.cpp:2074
clang::Scope::EnumScope
This scope corresponds to an enum.
Definition: Scope.h:118
clang::Preprocessor::getSpelling
StringRef getSpelling(SourceLocation loc, SmallVectorImpl< char > &buffer, bool *invalid=nullptr) const
Return the &#39;spelling&#39; of the token at the given location; does not go up to the spelling location or ...
Definition: Preprocessor.h:1675
clang::IdentifierInfo::getTokenID
tok::TokenKind getTokenID() const
If this is a source-language token (e.g.
Definition: IdentifierTable.h:185
normalizeAttrName
static StringRef normalizeAttrName(StringRef Name)
Normalizes an attribute name by dropping prefixed and suffixed __.
Definition: ParseDecl.cpp:72
clang::Declarator::SetRangeBegin
void SetRangeBegin(SourceLocation Loc)
SetRangeBegin - Set the start of the source range to Loc, unless it&#39;s invalid.
Definition: DeclSpec.h:1937
clang::Sema::PCC_Template
Code completion occurs following one or more template headers.
Definition: Sema.h:11502
clang::DeclaratorContext::ConversionIdContext
clang::DeclSpec::isTypeSpecPipe
bool isTypeSpecPipe() const
Definition: DeclSpec.h:485
clang::DeclSpec::setFunctionSpecForceInline
bool setFunctionSpecForceInline(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:952
clang::Sema::BuildDeclaratorGroup
DeclGroupPtrTy BuildDeclaratorGroup(MutableArrayRef< Decl *> Group)
BuildDeclaratorGroup - convert a list of declarations into a declaration group, performing any necess...
Definition: SemaDecl.cpp:13017
clang::Sema::CorrectDelayedTyposInExpr
ExprResult CorrectDelayedTyposInExpr(Expr *E, VarDecl *InitDecl=nullptr, llvm::function_ref< ExprResult(Expr *)> Filter=[](Expr *E) -> ExprResult { return E;})
Process any TypoExprs in the given Expr and its children, generating diagnostics as appropriate and r...
Definition: SemaExprCXX.cpp:8167
clang::BalancedDelimiterTracker::getRange
SourceRange getRange() const
Definition: RAIIObjectsForParser.h:429
clang::Declarator::getNumTypeObjects
unsigned getNumTypeObjects() const
Return the number of types applied to this declarator.
Definition: DeclSpec.h:2220
clang::AttributeCommonInfo::AS_Keyword
__ptr16, alignas(...), etc.
Definition: AttributeCommonInfo.h:42
clang::ASTContext::getPrintingPolicy
const clang::PrintingPolicy & getPrintingPolicy() const
Definition: ASTContext.h:671
clang::AttributeCommonInfo::Kind
Kind
Definition: AttributeCommonInfo.h:52
clang::Sema::NC_Keyword
The name has been typo-corrected to a keyword.
Definition: Sema.h:1948
clang::DeclaratorChunk::Pipe
Definition: DeclSpec.h:1176
clang::MultiTemplateParamsArg
MutableArrayRef< TemplateParameterList * > MultiTemplateParamsArg
Definition: Ownership.h:277
clang::ParsingDeclSpec::complete
void complete(Decl *D)
Definition: RAIIObjectsForParser.h:190
clang::DeclSpec::SetFriendSpec
bool SetFriendSpec(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:1016
clang::DeclSpec::hasAttributes
bool hasAttributes() const
Definition: DeclSpec.h:785
clang::Scope
Scope - A scope is a transient data structure that is used while parsing the program.
Definition: Scope.h:40
clang::DeclSpec::PQ_FunctionSpecifier
Definition: DeclSpec.h:331
clang::AvailabilityChange
Represents information about a change in availability for an entity, which is part of the encoding of...
Definition: ParsedAttr.h:44
clang::CXXScopeSpec
Represents a C++ nested-name-specifier or a global scope specifier.
Definition: DeclSpec.h:63
clang::hasAttribute
int hasAttribute(AttrSyntax Syntax, const IdentifierInfo *Scope, const IdentifierInfo *Attr, const TargetInfo &Target, const LangOptions &LangOpts)
Return the version number associated with the attribute if we recognize and implement the attribute s...
Definition: Attributes.cpp:8
clang::DeclSpec::SetTypePipe
bool SetTypePipe(bool isPipe, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
Definition: DeclSpec.cpp:848
clang::DeclSpec::setFunctionSpecNoreturn
bool setFunctionSpecNoreturn(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:1001
clang::SourceManager::getSpellingLoc
SourceLocation getSpellingLoc(SourceLocation Loc) const
Given a SourceLocation object, return the spelling location referenced by the ID. ...
Definition: SourceManager.h:1207
clang::Parser::ConsumeAnyToken
SourceLocation ConsumeAnyToken(bool ConsumeCodeCompletionTok=false)
ConsumeAnyToken - Dispatch to the right Consume* method based on the current token type...
Definition: Parser.h:480
clang::DeclSpec::getConstSpecLoc
SourceLocation getConstSpecLoc() const
Definition: DeclSpec.h:551
clang::Declarator::getCXXScopeSpec
const CXXScopeSpec & getCXXScopeSpec() const
getCXXScopeSpec - Return the C++ scope specifier (global scope or nested-name-specifier) that is part...
Definition: DeclSpec.h:1910
clang::IdentifierInfo::isCPlusPlusKeyword
bool isCPlusPlusKeyword(const LangOptions &LangOpts) const
Return true if this token is a C++ keyword in the specified language.
Definition: IdentifierTable.cpp:252
clang::ParsedAttributesView::begin
iterator begin()
Definition: ParsedAttr.h:786
clang::ParsedAttributesView::addAtEnd
void addAtEnd(ParsedAttr *newAttr)
Definition: ParsedAttr.h:738
clang::DeclaratorChunk::FunctionTypeInfo
Definition: DeclSpec.h:1275
VersionNumberSeparator
static bool VersionNumberSeparator(const char Separator)
Definition: ParseDecl.cpp:843
clang::DeclSpec::getSourceRange
SourceRange getSourceRange() const LLVM_READONLY
Definition: DeclSpec.h:509
clang::Token::getName
const char * getName() const
Definition: Token.h:168
llvm::SmallString
Definition: LLVM.h:34
clang::Sema::ExpressionEvaluationContext::ConstantEvaluated
The current context is "potentially evaluated" in C++11 terms, but the expression is evaluated at com...
clang::LangOptions::getOpenCLVersionTuple
VersionTuple getOpenCLVersionTuple() const
Return the OpenCL C or C++ version as a VersionTuple.
Definition: LangOptions.cpp:46
clang::AvailabilityChange::Version
VersionTuple Version
The version number at which the change occurred.
Definition: ParsedAttr.h:49
clang::Declarator::getIdentifier
IdentifierInfo * getIdentifier() const
Definition: DeclSpec.h:2172
clang::AttributeCommonInfo::UnknownAttribute
Definition: AttributeCommonInfo.h:58
clang::ParsingDeclarator::clear
void clear()
Definition: RAIIObjectsForParser.h:216
clang::ExplicitSpecKind::ResolvedTrue
clang::DeclSpec::TST_float
static const TST TST_float
Definition: DeclSpec.h:282
clang::Language
Language
The language for the input, used to select and validate the language standard and possible actions...
Definition: LangStandard.h:19
clang::AS_none
Definition: Specifiers.h:117
clang::Sema::PCC_LocalDeclarationSpecifiers
Code completion occurs within a sequence of declaration specifiers within a function, method, or block.
Definition: Sema.h:11528
clang::Sema::ActOnCXXExitDeclInitializer
void ActOnCXXExitDeclInitializer(Scope *S, Decl *Dcl)
ActOnCXXExitDeclInitializer - Invoked after we are finished parsing an initializer for the declaratio...
Definition: SemaDeclCXX.cpp:16717
clang::Scope::getFlags
unsigned getFlags() const
getFlags - Return the flags for this scope.
Definition: Scope.h:220
AddressSpaces.h
Provides definitions for the various language-specific address spaces.
clang::DeclaratorContext::InitStmtContext
clang::DeclSpec::TSW_long
static const TSW TSW_long
Definition: DeclSpec.h:255
clang::DeclaratorChunk::getFunction
static DeclaratorChunk getFunction(bool HasProto, bool IsAmbiguous, SourceLocation LParenLoc, ParamInfo *Params, unsigned NumParams, SourceLocation EllipsisLoc, SourceLocation RParenLoc, bool RefQualifierIsLvalueRef, SourceLocation RefQualifierLoc, SourceLocation MutableLoc, ExceptionSpecificationType ESpecType, SourceRange ESpecRange, ParsedType *Exceptions, SourceRange *ExceptionRanges, unsigned NumExceptions, Expr *NoexceptExpr, CachedTokens *ExceptionSpecTokens, ArrayRef< NamedDecl *> DeclsInPrototype, SourceLocation LocalRangeBegin, SourceLocation LocalRangeEnd, Declarator &TheDeclarator, TypeResult TrailingReturnType=TypeResult(), DeclSpec *MethodQualifiers=nullptr)
DeclaratorChunk::getFunction - Return a DeclaratorChunk for a function.
Definition: DeclSpec.cpp:151
CharInfo.h
clang::TST_auto
Definition: Specifiers.h:91
clang::DeclSpec::getUnalignedSpecLoc
SourceLocation getUnalignedSpecLoc() const
Definition: DeclSpec.h:555
clang::DeclSpec::hasConstexprSpecifier
bool hasConstexprSpecifier() const
Definition: DeclSpec.h:751
clang::format::FormatToken::isOneOf
bool isOneOf(A K1, B K2) const
Definition: FormatToken.h:323
clang::ParsedAttributes::addNewTypeTagForDatatype
ParsedAttr * addNewTypeTagForDatatype(IdentifierInfo *attrName, SourceRange attrRange, IdentifierInfo *scopeName, SourceLocation scopeLoc, IdentifierLoc *argumentKind, ParsedType matchingCType, bool layoutCompatible, bool mustBeNull, ParsedAttr::Syntax syntax)
Add type_tag_for_datatype attribute.
Definition: ParsedAttr.h:890
clang::DeclSpec::ClearConstexprSpec
void ClearConstexprSpec()
Definition: DeclSpec.h:755
clang::Declarator::mayBeFollowedByCXXDirectInit
bool mayBeFollowedByCXXDirectInit() const
mayBeFollowedByCXXDirectInit - Return true if the declarator can be followed by a C++ direct initiali...
Definition: DeclSpec.h:2099
clang::ParsingDeclarator
A class for parsing a declarator.
Definition: RAIIObjectsForParser.h:200
clang::Declarator::isPastIdentifier
bool isPastIdentifier() const
isPastIdentifier - Return true if we have parsed beyond the point where the name would appear...
Definition: DeclSpec.h:2156
clang::DeclSpec::SetRangeStart
void SetRangeStart(SourceLocation Loc)
Definition: DeclSpec.h:641
clang::Sema::NC_FunctionTemplate
The name was classified as a function template name.
Definition: Sema.h:1971
clang::DeclaratorChunk::FunctionTypeInfo::NumParams
unsigned NumParams
NumParams - This is the number of formal parameters specified by the declarator.
Definition: DeclSpec.h:1314
clang::Parser::StopAtCodeCompletion
Stop at code completion.
Definition: Parser.h:1101
clang::BalancedDelimiterTracker::skipToEnd
void skipToEnd()
Definition: Parser.cpp:2525
clang::Sema::ActOnReenterCXXMethodParameter
void ActOnReenterCXXMethodParameter(Scope *S, ParmVarDecl *Param)
This is used to implement the constant expression evaluation part of the attribute enable_if extensio...
Definition: SemaDeclCXX.cpp:9729
clang::DeclSpec::getTypeSpecType
TST getTypeSpecType() const
Definition: DeclSpec.h:479
clang::Lexer::getSourceText
static StringRef getSourceText(CharSourceRange Range, const SourceManager &SM, const LangOptions &LangOpts, bool *Invalid=nullptr)
Returns a string for the source that the range encompasses.
Definition: Lexer.cpp:939
clang::Lexer::isAtEndOfMacroExpansion
static bool isAtEndOfMacroExpansion(SourceLocation loc, const SourceManager &SM, const LangOptions &LangOpts, SourceLocation *MacroEnd=nullptr)
Returns true if the given MacroID location points at the last token of the macro expansion.
Definition: Lexer.cpp:822
clang::Sema::ReuseLambdaContextDecl
Definition: Sema.h:4465
clang::Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed
The current expression is potentially evaluated, but any declarations referenced inside that expressi...
clang::ParsedAttributes::addNewPropertyAttr
ParsedAttr * addNewPropertyAttr(IdentifierInfo *attrName, SourceRange attrRange, IdentifierInfo *scopeName, SourceLocation scopeLoc, IdentifierInfo *getterId, IdentifierInfo *setterId, ParsedAttr::Syntax syntaxUsed)
Add microsoft __delspec(property) attribute.
Definition: ParsedAttr.h:915
clang::Sema::ParsedFreeStandingDeclSpec
Decl * ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, DeclSpec &DS, RecordDecl *&AnonRecord)
ParsedFreeStandingDeclSpec - This method is invoked when a declspec with no declarator (e...
Definition: SemaDecl.cpp:4305
End
SourceLocation End
Definition: USRLocFinder.cpp:166
clang::Declarator::setDecompositionBindings
void setDecompositionBindings(SourceLocation LSquareLoc, ArrayRef< DecompositionDeclarator::Binding > Bindings, SourceLocation RSquareLoc)
Set the decomposition bindings for this declarator.
Definition: DeclSpec.cpp:280
clang::CharSourceRange
Represents a character-granular source range.
Definition: SourceLocation.h:250
llvm::MutableArrayRef
Definition: LLVM.h:32
clang::CPlusPlus
Definition: LangStandard.h:47
clang::Sema::TUK_Reference
Definition: Sema.h:2566
clang::Parser::SkipMalformedDecl
void SkipMalformedDecl()
SkipMalformedDecl - Read tokens until we get to some likely good stopping point for skipping past a s...
Definition: ParseDecl.cpp:1922
clang::Parser::ParseUnqualifiedId
bool ParseUnqualifiedId(CXXScopeSpec &SS, bool EnteringContext, bool AllowDestructorName, bool AllowConstructorName, bool AllowDeductionGuide, ParsedType ObjectType, SourceLocation *TemplateKWLoc, UnqualifiedId &Result)
Parse a C++ unqualified-id (or a C identifier), which describes the name of an entity.
Definition: ParseExprCXX.cpp:2699
clang::DeclaratorChunk::getPipe
static DeclaratorChunk getPipe(unsigned TypeQuals, SourceLocation Loc)
Return a DeclaratorChunk for a block.
Definition: DeclSpec.h:1652
clang::Sema::TUK_Friend
Definition: Sema.h:2569
clang::DeclaratorContext::TrailingReturnVarContext
clang::Sema::ActOnTypeName
TypeResult ActOnTypeName(Scope *S, Declarator &D)
Definition: SemaType.cpp:6026
clang::DeclaratorChunk::ParamInfo::Param
Decl * Param
Definition: DeclSpec.h:1253
clang::DeclSpec::isTypeAltiVecVector
bool isTypeAltiVecVector() const
Definition: DeclSpec.h:480
clang::Sema::NC_NonType
The name was classified as a specific non-type, non-template declaration.
Definition: Sema.h:1954
clang::Token::setEofData
void setEofData(const void *D)
Definition: Token.h:196
clang::TNK_Concept_template
The name refers to a concept.
Definition: TemplateKinds.h:52
isPipeDeclerator
static bool isPipeDeclerator(const Declarator &D)
Definition: ParseDecl.cpp:5584
clang::DeclSpec::getVolatileSpecLoc
SourceLocation getVolatileSpecLoc() const
Definition: DeclSpec.h:553
Lookup.h
clang::DeclSpec::getThreadStorageClassSpecLoc
SourceLocation getThreadStorageClassSpecLoc() const
Definition: DeclSpec.h:457
isOneOf
static constexpr bool isOneOf()
Definition: RetainSummaryManager.cpp:27
clang::Token::getLocation
SourceLocation getLocation() const
Return a source location identifier for the specified offset in the current file. ...
Definition: Token.h:126
clang::DeclaratorChunk::Array
Definition: DeclSpec.h:1176
clang::Declarator::setAsmLabel
void setAsmLabel(Expr *E)
Definition: DeclSpec.h:2517
clang::Sema::SkipBodyInfo::New
NamedDecl * New
Definition: Sema.h:1905
clang::AttributeCommonInfo::AS_Declspec
__declspec(...)
Definition: AttributeCommonInfo.h:36
clang::Decl::getDeclContext
DeclContext * getDeclContext()
Definition: DeclBase.h:438
clang::Declarator::hasEllipsis
bool hasEllipsis() const
Definition: DeclSpec.h:2541
clang::DeclaratorContext::AliasDeclContext
Scope.h
clang::DeclSpec::TST_decimal64
static const TST TST_decimal64
Definition: DeclSpec.h:290
clang::Scope::CompoundStmtScope
This is a compound statement scope.
Definition: Scope.h:130
clang::DeclSpec::getStorageClassSpecLoc
SourceLocation getStorageClassSpecLoc() const
Definition: DeclSpec.h:456
clang::UnqualifiedId::getKind
UnqualifiedIdKind getKind() const
Determine what kind of name we have.
Definition: DeclSpec.h:1042
clang::Sema::ExpressionEvaluationContext::Unevaluated
The current expression and its subexpressions occur within an unevaluated operand (C++11 [expr]p7)...
clang::DeclSpec::UpdateTypeRep
void UpdateTypeRep(ParsedType Rep)
Definition: DeclSpec.h:707
clang::AvailabilityChange::KeywordLoc
SourceLocation KeywordLoc
The location of the keyword indicating the kind of change.
Definition: ParsedAttr.h:46
clang::ParsingFieldDeclarator
A class for parsing a field declarator.
Definition: RAIIObjectsForParser.h:227
clang::AvailabilityChange::isValid
bool isValid() const
Determine whether this availability change is valid.
Definition: ParsedAttr.h:55
clang::SourceRange::isInvalid
bool isInvalid() const
Definition: SourceLocation.h:223
clang::DeclSpec::TQ_const
Definition: DeclSpec.h:315
clang::DeclaratorChunk::Loc
SourceLocation Loc
Loc - The place where this type was defined.
Definition: DeclSpec.h:1180
clang::DeclaratorContext
DeclaratorContext
Definition: DeclSpec.h:1749
getMissingDeclaratorIdLoc
static SourceLocation getMissingDeclaratorIdLoc(Declarator &D, SourceLocation Loc)
Definition: ParseDecl.cpp:5782
clang::DeclSpec::TST_int
static const TST TST_int
Definition: DeclSpec.h:279
clang::Declarator::setEllipsisLoc
void setEllipsisLoc(SourceLocation EL)
Definition: DeclSpec.h:2543
clang::ActionResult::isInvalid
bool isInvalid() const
Definition: Ownership.h:166
clang::SourceRange::getEnd
SourceLocation getEnd() const
Definition: SourceLocation.h:217
clang::DeclSpec::SetTypeSpecSign
bool SetTypeSpecSign(TSS S, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:692
clang::BalancedDelimiterTracker::getOpenLocation
SourceLocation getOpenLocation() const
Definition: RAIIObjectsForParser.h:427
clang::DeclSpec::TST_half
static const TST TST_half
Definition: DeclSpec.h:281
clang::DeclSpec::isFriendSpecified
bool isFriendSpecified() const
Definition: DeclSpec.h:740
clang::IdentifierLoc
Wraps an identifier and optional source location for the identifier.
Definition: ParsedAttr.h:95
clang::Sema::ActOnCXXEnterDeclInitializer
void ActOnCXXEnterDeclInitializer(Scope *S, Decl *Dcl)
ActOnCXXEnterDeclInitializer - Invoked when we are about to parse an initializer for the declaration ...
Definition: SemaDeclCXX.cpp:16696
clang::DeclaratorContext::AliasTemplateContext
clang::ActionResult::isUsable
bool isUsable() const
Definition: Ownership.h:167
clang::ObjCSubstitutionContext::Result
The result type of a method or function.
clang::Sema::SkipBodyInfo
Definition: Sema.h:1898
clang::AvailabilityChange::VersionRange
SourceRange VersionRange
The source range covering the version number.
Definition: ParsedAttr.h:52
clang::QualType::isNull
bool isNull() const
Return true if this QualType doesn&#39;t point to a type yet.
Definition: Type.h:719
clang::DeclSpec::TSW_short
static const TSW TSW_short
Definition: DeclSpec.h:254
SM
const SourceManager & SM
Definition: Format.cpp:1685
clang::PrettyDeclStackTraceEntry
PrettyDeclStackTraceEntry - If a crash occurs in the parser while parsing something related to a decl...
Definition: PrettyDeclStackTrace.h:30
clang::Declarator::isFirstDeclarator
bool isFirstDeclarator() const
Definition: DeclSpec.h:2537
clang::Parser::getLangOpts
const LangOptions & getLangOpts() const
Definition: Parser.h:407
clang::DeclSpec::SetTypeSpecWidth
bool SetTypeSpecWidth(TSW W, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
These methods set the specified attribute of the DeclSpec, but return true and ignore the request if ...
Definition: DeclSpec.cpp:665
clang::Scope::FunctionDeclarationScope
This is a scope that corresponds to the parameters within a function prototype for a function declara...
Definition: Scope.h:87
clang::TST_decltype_auto
Definition: Specifiers.h:92
clang::Declarator::hasGroupingParens
bool hasGroupingParens() const
Definition: DeclSpec.h:2535
clang::Preprocessor::getSourceManager
SourceManager & getSourceManager() const
Definition: Preprocessor.h:911
clang::DeclSpec::getConstexprSpecifier
ConstexprSpecKind getConstexprSpecifier() const
Definition: DeclSpec.h:746
clang::DeclSpec::TST_char32
static const TST TST_char32
Definition: DeclSpec.h:278
clang::DeclSpec::TST_fract
static const TST TST_fract
Definition: DeclSpec.h:286
clang::ParsingDeclSpec
A class for parsing a DeclSpec.
Definition: RAIIObjectsForParser.h:175
clang::Decl::isTemplateDecl
bool isTemplateDecl() const
returns true if this declaration is a template
Definition: DeclBase.cpp:226
clang::DeclaratorChunk::getParen
static DeclaratorChunk getParen(SourceLocation LParenLoc, SourceLocation RParenLoc)
Return a DeclaratorChunk for a paren.
Definition: DeclSpec.h:1674
clang::DeclSpec::TQ_atomic
Definition: DeclSpec.h:321
Kind
Kind
Definition: ChrootChecker.cpp:29
clang::DeclaratorContext::FileContext
clang::Parser::StopAtSemi
Stop skipping at semicolon.
Definition: Parser.h:1098
clang::ActionResult
ActionResult - This structure is used while parsing/acting on expressions, stmts, etc...
Definition: Ownership.h:153
clang::DeclaratorChunk::getReference
static DeclaratorChunk getReference(unsigned TypeQuals, SourceLocation Loc, bool lvalue)
Return a DeclaratorChunk for a reference.
Definition: DeclSpec.h:1590
clang::DeclSpec::getStorageClassSpec
SCS getStorageClassSpec() const
Definition: DeclSpec.h:447
clang::DeclSpec::TST_float16
static const TST TST_float16
Definition: DeclSpec.h:284
clang::Declarator::hasName
bool hasName() const
hasName - Whether this declarator has a name, which might be an identifier (accessible via getIdentif...
Definition: DeclSpec.h:2162
clang::LangAS::Default
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:86
clang::Sema::ActOnFinishDelayedMemberDeclarations
void ActOnFinishDelayedMemberDeclarations(Scope *S, Decl *Record)
Definition: SemaDeclCXX.cpp:9721
clang::DeclSpec::isTypeSpecOwned
bool isTypeSpecOwned() const
Definition: DeclSpec.h:483
clang::DeclSpec::TST_auto_type
static const TST TST_auto_type
Definition: DeclSpec.h:304
clang::Parser::TryAnnotateTypeOrScopeToken
bool TryAnnotateTypeOrScopeToken()
TryAnnotateTypeOrScopeToken - If the current token position is on a typename (possibly qualified in C...
Definition: Parser.cpp:1800
clang::DeclSpec::SCS_extern
Definition: DeclSpec.h:235
clang::format::FormatToken::is
bool is(tok::TokenKind Kind) const
Definition: FormatToken.h:314
clang::DeclaratorChunk::Kind
enum clang::DeclaratorChunk::@219 Kind
clang::Declarator::getName
UnqualifiedId & getName()
Retrieve the name specified by this declarator.
Definition: DeclSpec.h:1914
clang::Sema::FinalizeDeclaration
void FinalizeDeclaration(Decl *D)
FinalizeDeclaration - called by ParseDeclarationAfterDeclarator to perform any semantic actions neces...
Definition: SemaDecl.cpp:12758
SetupFixedPointError
static void SetupFixedPointError(const LangOptions &LangOpts, const char *&PrevSpec, unsigned &DiagID, bool &isInvalid)
Definition: ParseDecl.cpp:2995
clang::DeclaratorContext::RequiresExprContext
clang::TagDecl
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3219
clang::Parser::ExitScope
void ExitScope()
ExitScope - Pop a scope off the scope stack.
Definition: Parser.cpp:381
clang::Scope::AtCatchScope
This is a scope that corresponds to the Objective-C @catch statement.
Definition: Scope.h:91
clang::Decl::getASTContext
ASTContext & getASTContext() const LLVM_READONLY
Definition: DeclBase.cpp:377
clang::DeclSpec::PQ_StorageClassSpecifier
Definition: DeclSpec.h:328
clang::DeclSpec::getEndLoc
SourceLocation getEndLoc() const LLVM_READONLY
Definition: DeclSpec.h:511
clang::ParsingDeclRAIIObject::complete
void complete(Decl *D)
Definition: RAIIObjectsForParser.h:149
clang::DeclSpec::TST_union
static const TST TST_union
Definition: DeclSpec.h:293
clang::Token::getIdentifierInfo
IdentifierInfo * getIdentifierInfo() const
Definition: Token.h:179
clang::ParsedAttr
ParsedAttr - Represents a syntactic attribute.
Definition: ParsedAttr.h:117
clang::DeclSpec::SetStorageClassSpec
bool SetStorageClassSpec(Sema &S, SCS SC, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
These methods set the specified attribute of the DeclSpec and return false if there was no error...
Definition: DeclSpec.cpp:589
clang::Declarator::hasTrailingRequiresClause
bool hasTrailingRequiresClause() const
Determine whether a trailing requires clause was written in this declarator.
Definition: DeclSpec.h:2452
clang::SourceManager::isWrittenInBuiltinFile
bool isWrittenInBuiltinFile(SourceLocation Loc) const
Returns whether Loc is located in a <built-in> file.
Definition: SourceManager.h:1475
clang::DeclSpec::TSS_signed
static const TSS TSS_signed
Definition: DeclSpec.h:267
clang::ExtensionRAIIObject
ExtensionRAIIObject - This saves the state of extension warnings when constructed and disables them...
Definition: RAIIObjectsForParser.h:252
clang::Declarator::setGroupingParens
void setGroupingParens(bool flag)
Definition: DeclSpec.h:2534
clang::DeclSpec::SCS_typedef
Definition: DeclSpec.h:234
clang::ParsedAttributes::addNew
ParsedAttr * addNew(IdentifierInfo *attrName, SourceRange attrRange, IdentifierInfo *scopeName, SourceLocation scopeLoc, ArgsUnion *args, unsigned numArgs, ParsedAttr::Syntax syntax, SourceLocation ellipsisLoc=SourceLocation())
Add attribute with expression arguments.
Definition: ParsedAttr.h:850
clang::FieldDeclarator::BitfieldSize
Expr * BitfieldSize
Definition: DeclSpec.h:2579
clang::Parser::EnterScope
void EnterScope(unsigned ScopeFlags)
EnterScope - Start a new scope.
Definition: Parser.cpp:370
clang::IdentifierInfo::getNameStart
const char * getNameStart() const
Return the beginning of the actual null-terminated string for this identifier.
Definition: IdentifierTable.h:149
clang::Sema::NC_Unknown
This name is not a type or template in this context, but might be something else. ...
Definition: Sema.h:1944
clang::Token::getEofData
const void * getEofData() const
Definition: Token.h:192
clang::Token::isAtStartOfLine
bool isAtStartOfLine() const
isAtStartOfLine - Return true if this token is at the start of a line.
Definition: Token.h:268
isPtrOperatorToken
static bool isPtrOperatorToken(tok::TokenKind Kind, const LangOptions &Lang, DeclaratorContext TheContext)
Definition: ParseDecl.cpp:5555
clang::DeclaratorContext::LambdaExprParameterContext
clang::AtomicScopeModelKind::OpenCL
clang::tok::TokenKind
TokenKind
Provides a simple uniform namespace for tokens from all C languages.
Definition: TokenKinds.h:24
clang::ParsedAttributesView::remove
void remove(ParsedAttr *ToBeRemoved)
Definition: ParsedAttr.h:743
llvm::SmallVector
Definition: LLVM.h:35
clang::DeclaratorChunk::Pointer
Definition: DeclSpec.h:1176
clang::DeclSpec::getRepAsDecl
Decl * getRepAsDecl() const
Definition: DeclSpec.h:493
clang::DeclSpec::TST_typeofType
static const TST TST_typeofType
Definition: DeclSpec.h:298
clang::UETT_AlignOf
Used for C&#39;s _Alignof and C++&#39;s alignof.
Definition: TypeTraits.h:100
clang::Parser::getCurScope
Scope * getCurScope() const
Definition: Parser.h:414
clang::DeclSpec::SetTypeAltiVecVector
bool SetTypeAltiVecVector(bool isAltiVecVector, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
Definition: DeclSpec.cpp:833
clang::DeclSpec::getInlineSpecLoc
SourceLocation getInlineSpecLoc() const
Definition: DeclSpec.h:573
clang::DeclaratorChunk::getArray
static DeclaratorChunk getArray(unsigned TypeQuals, bool isStatic, bool isStar, Expr *NumElts, SourceLocation LBLoc, SourceLocation RBLoc)
Return a DeclaratorChunk for an array.
Definition: DeclSpec.h:1601
clang::Parser::ParseConstantExpressionInExprEvalContext
ExprResult ParseConstantExpressionInExprEvalContext(TypeCastState isTypeCast=NotTypeCast)
Definition: ParseExpr.cpp:201
clang::CXXScopeSpec::isInvalid
bool isInvalid() const
An error occurred during parsing of the scope specifier.
Definition: DeclSpec.h:194
clang::MultiVersionKind::None
clang::Sema::TUK_Definition
Definition: Sema.h:2568
clang::ParsedAttributesView::empty
bool empty() const
Definition: ParsedAttr.h:733
clang::DeclSpec::getModulePrivateSpecLoc
SourceLocation getModulePrivateSpecLoc() const
Definition: DeclSpec.h:744
clang::IdentifierInfo::getName
StringRef getName() const
Return the actual identifier string.
Definition: IdentifierTable.h:155
clang::Scope::ClassScope
The scope of a struct/union/class definition.
Definition: Scope.h:65
clang::Declarator::getSourceRange
SourceRange getSourceRange() const LLVM_READONLY
Get the source range that spans this declarator.
Definition: DeclSpec.h:1930
clang::DeclSpec::TQ_unspecified
Definition: DeclSpec.h:314
clang::Token::isNot
bool isNot(tok::TokenKind K) const
Definition: Token.h:98
clang::Sema::ActOnReenterFunctionContext
void ActOnReenterFunctionContext(Scope *S, Decl *D)
Push the parameters of D, which must be a function, into scope.
Definition: SemaDecl.cpp:1374
clang::DeclSpec::getTypeSpecWidth
TSW getTypeSpecWidth() const
Definition: DeclSpec.h:476
clang::Sema::ParserCompletionContext
ParserCompletionContext
Describes the context in which code completion occurs.
Definition: Sema.h:11486
clang::DeclSpec::setModulePrivateSpec
bool setModulePrivateSpec(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:1034
clang::DeclSpec::SCS_register
Definition: DeclSpec.h:238
clang::Sema::SkipBodyInfo::ShouldSkip
bool ShouldSkip
Definition: Sema.h:1902
isInvalid
static bool isInvalid(LocType Loc, bool *Invalid)
Definition: SourceManager.cpp:1199
clang::CPlusPlus17
Definition: LangStandard.h:50
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
clang::CSK_consteval
Definition: Specifiers.h:35
clang::SourceLocation::isValid
bool isValid() const
Return true if this is a valid SourceLocation object.
Definition: SourceLocation.h:106
clang::BalancedDelimiterTracker::expectAndConsume
bool expectAndConsume(unsigned DiagID=diag::err_expected, const char *Msg="", tok::TokenKind SkipToTok=tok::unknown)
Definition: Parser.cpp:2489
clang::DeclSpec::TST_auto
static const TST TST_auto
Definition: DeclSpec.h:303
clang::DeclSpec::TST_void
static const TST TST_void
Definition: DeclSpec.h:273
clang::Decl::isFunctionOrFunctionTemplate
bool isFunctionOrFunctionTemplate() const
Whether this declaration is a function or function template.
Definition: DeclBase.h:1018
clang::DeclSpec::TST_int128
static const TST TST_int128
Definition: DeclSpec.h:280
clang::C99
Definition: LangStandard.h:43
clang::DeclSpec::PQ_None
Definition: DeclSpec.h:327
clang::Sema::NameClassification
Definition: Sema.h:1978
clang::FixItHint::CreateRemoval
static FixItHint CreateRemoval(CharSourceRange RemoveRange)
Create a code modification hint that removes the given source range.
Definition: Diagnostic.h:118
clang::AttributeCommonInfo::IgnoredAttribute
Definition: AttributeCommonInfo.h:57
clang::DeclSpec::getPipeLoc
SourceLocation getPipeLoc() const
Definition: DeclSpec.h:556
clang::Scope::TemplateParamScope
This is a scope that corresponds to the template parameters of a C++ template.
Definition: Scope.h:77
RAIIObjectsForParser.h
clang::DeclaratorChunk::MemberPointer
Definition: DeclSpec.h:1176
clang::Token::isOneOf
bool isOneOf(tok::TokenKind K1, tok::TokenKind K2) const
Definition: Token.h:99
clang::EnumDecl
Represents an enum.
Definition: Decl.h:3481
clang::C11
Definition: LangStandard.h:44
clang::Language::Unknown
clang::TNK_Type_template
The name refers to a template whose specialization produces a type.
Definition: TemplateKinds.h:30
clang::DeclSpec::TST_unspecified
static const TST TST_unspecified
Definition: DeclSpec.h:272
clang::Token::getLength
unsigned getLength() const
Definition: Token.h:129
clang::FieldDeclarator::D
Declarator D
Definition: DeclSpec.h:2578
clang::CXXScopeSpec::isValid
bool isValid() const
A scope specifier is present, and it refers to a real scope.
Definition: DeclSpec.h:196
clang::Qualifiers::addConst
void addConst()
Definition: Type.h:263
clang::SourceLocation::isMacroID
bool isMacroID() const
Definition: SourceLocation.h:99
clang::isDigit
LLVM_READONLY bool isDigit(unsigned char c)
Return true if this character is an ASCII digit: [0-9].
Definition: CharInfo.h:93
clang::SourceManager::getFileID
FileID getFileID(SourceLocation SpellingLoc) const
Return the FileID for a SourceLocation.
Definition: SourceManager.h:1090
clang::Parser::getTargetInfo
const TargetInfo & getTargetInfo() const
Definition: Parser.h:408
clang::DeclSpec::TST_decimal128
static const TST TST_decimal128
Definition: DeclSpec.h:291
clang::DeclSpec::getTypeQualifiers
unsigned getTypeQualifiers() const
getTypeQualifiers - Return a set of TQs.
Definition: DeclSpec.h:550
clang::comments::tok::eof
Definition: CommentLexer.h:33
clang::DeclaratorContext::LambdaExprContext
clang::DeclSpec::takeAttributesFrom
void takeAttributesFrom(ParsedAttributes &attrs)
Definition: DeclSpec.h:790
clang::SuppressAccessChecks::redelay
void redelay()
Definition: RAIIObjectsForParser.h:74
clang::Parser::Diag
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID)
Definition: Parser.cpp:72
clang::DeclSpec::TSCS___thread
static const TSCS TSCS___thread
Definition: DeclSpec.h:247
clang::DeclSpec::getVirtualSpecLoc
SourceLocation getVirtualSpecLoc() const
Definition: DeclSpec.h:582
clang::DeclSpec::SetStorageClassSpecThread
bool SetStorageClassSpecThread(TSCS TSC, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:651
clang::DeclSpec::TST_typename
static const TST TST_typename
Definition: DeclSpec.h:297
clang::Sema::NC_UndeclaredNonType
The name was classified as an ADL-only function name.
Definition: Sema.h:1958
clang::Declarator::SetRangeEnd
void SetRangeEnd(SourceLocation Loc)
SetRangeEnd - Set the end of the source range to Loc, unless it&#39;s invalid.
Definition: DeclSpec.h:1942
clang::DeclaratorContext::TemplateArgContext
clang::Parser::ParseAssignmentExpression
ExprResult ParseAssignmentExpression(TypeCastState isTypeCast=NotTypeCast)
Parse an expr that doesn&#39;t include (top-level) commas.
Definition: ParseExpr.cpp:160
clang::ExceptionSpecificationType
ExceptionSpecificationType
The various types of exception specifications that exist in C++11.
Definition: ExceptionSpecificationType.h:20
clang::Sema::ActOnCXXForRangeDecl
void ActOnCXXForRangeDecl(Decl *D)
Definition: SemaDecl.cpp:12412
clang::ParsingDeclRAIIObject::NoParent
Definition: RAIIObjectsForParser.h:100
clang::FixItHint::CreateInsertion
static FixItHint CreateInsertion(SourceLocation InsertionLoc, StringRef Code, bool BeforePreviousInsertions=false)
Create a code modification hint that inserts the given code string at a specific location.
Definition: Diagnostic.h:92
clang::Sema::TUK_Declaration
Definition: Sema.h:2567
clang::Declarator::AddTypeInfo
void AddTypeInfo(const DeclaratorChunk &TI, ParsedAttributes &&attrs, SourceLocation EndLoc)
AddTypeInfo - Add a chunk to this declarator.
Definition: DeclSpec.h:2195
clang::SourceManager::getExpansionRange
CharSourceRange getExpansionRange(SourceLocation Loc) const
Given a SourceLocation object, return the range of tokens covered by the expansion in the ultimate fi...
Definition: SourceManager.cpp:1010
clang::DeclSpec::getTypeSpecScope
CXXScopeSpec & getTypeSpecScope()
Definition: DeclSpec.h:506
clang::Scope::DeclScope
This is a scope that can contain a declaration.
Definition: Scope.h:59
clang::DeclSpec::SetTypeSpecType
bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
Definition: DeclSpec.cpp:796
clang::Declarator::getIdentifierLoc
SourceLocation getIdentifierLoc() const
Definition: DeclSpec.h:2178
clang::CXXScopeSpec::isSet
bool isSet() const
Deprecated.
Definition: DeclSpec.h:209
clang::Sema::NC_Concept
The name was classified as a concept name.
Definition: Sema.h:1975
X
X
Add a minimal nested name specifier fixit hint to allow lookup of a tag name from an outer enclosing ...
Definition: SemaDecl.cpp:14781
clang::ParsedAttributes::addNewTypeAttr
ParsedAttr * addNewTypeAttr(IdentifierInfo *attrName, SourceRange attrRange, IdentifierInfo *scopeName, SourceLocation scopeLoc, ParsedType typeArg, ParsedAttr::Syntax syntaxUsed)
Add an attribute with a single type argument.
Definition: ParsedAttr.h:903
clang::Declarator::setInvalidType
void setInvalidType(bool Val=true)
Definition: DeclSpec.h:2529
clang::Parser::ParseConstantExpression
ExprResult ParseConstantExpression(TypeCastState isTypeCast=NotTypeCast)
Definition: ParseExpr.cpp:211
clang::ParmVarDecl::getMaxFunctionScopeDepth
static constexpr unsigned getMaxFunctionScopeDepth()
Definition: Decl.h:1647
clang::DeclaratorChunk::getBlockPointer
static DeclaratorChunk getBlockPointer(unsigned TypeQuals, SourceLocation Loc)
Return a DeclaratorChunk for a block.
Definition: DeclSpec.h:1642
attributeParsedArgsUnevaluated
static bool attributeParsedArgsUnevaluated(const IdentifierInfo &II)
Determine whether the given attribute requires parsing its arguments in an unevaluated context or not...
Definition: ParseDecl.cpp:284
clang::DeclSpec
Captures information about "declaration specifiers".
Definition: DeclSpec.h:228
clang::DeclSpec::getRestrictSpecLoc
SourceLocation getRestrictSpecLoc() const
Definition: DeclSpec.h:552
isValidAfterIdentifierInDeclarator
static bool isValidAfterIdentifierInDeclarator(const Token &T)
isValidAfterIdentifierInDeclaratorAfterDeclSpec - Return true if the specified token is valid after t...
Definition: ParseDecl.cpp:2552
clang::Sema::FinalizeDeclaratorGroup
DeclGroupPtrTy FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS, ArrayRef< Decl *> Group)
Definition: SemaDecl.cpp:12946
clang::Parser::ConsumeToken
SourceLocation ConsumeToken()
ConsumeToken - Consume the current &#39;peek token&#39; and lex the next one.
Definition: Parser.h:452
clang::DeclSpec::TSCS_thread_local
static const TSCS TSCS_thread_local
Definition: DeclSpec.h:248
clang::Declarator::getEllipsisLoc
SourceLocation getEllipsisLoc() const
Definition: DeclSpec.h:2542
clang::DeclSpec::SetTypeSpecSat
bool SetTypeSpecSat(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:820
clang::SourceLocation::isInvalid
bool isInvalid() const
Definition: SourceLocation.h:107
clang::DeclSpec::ClearTypeSpecType
void ClearTypeSpecType()
Definition: DeclSpec.h:469
clang::tok::isPragmaAnnotation
bool isPragmaAnnotation(TokenKind K)
Return true if this is an annotation token representing a pragma.
Definition: TokenKinds.cpp:59
clang::Declarator::mayHaveIdentifier
bool mayHaveIdentifier() const
mayHaveIdentifier - Return true if the identifier is either optional or required. ...
Definition: DeclSpec.h:2018
clang::CXXScopeSpec::isNotEmpty
bool isNotEmpty() const
A scope specifier is present, but may be valid or invalid.
Definition: DeclSpec.h:191
clang::DeclSpec::TST_float128
static const TST TST_float128
Definition: DeclSpec.h:287
clang::DeclaratorContext::CXXNewContext
clang::Declarator::getDeclSpec
const DeclSpec & getDeclSpec() const
getDeclSpec - Return the declaration-specifier that this declarator was declared with.
Definition: DeclSpec.h:1895
clang::DeclSpec::TST_bool
static const TST TST_bool
Definition: DeclSpec.h:288
clang::DeclSpec::TQ_volatile
Definition: DeclSpec.h:317
clang::DeclaratorChunk::Reference
Definition: DeclSpec.h:1176
clang::DeclSpec::isVirtualSpecified
bool isVirtualSpecified() const
Definition: DeclSpec.h:581
clang::Parser::getObjCDeclContext
Decl * getObjCDeclContext() const
Definition: Parser.h:419
clang::FixItHint::CreateReplacement
static FixItHint CreateReplacement(CharSourceRange RemoveRange, StringRef Code)
Create a code modification hint that replaces the given source range with the given code string...
Definition: Diagnostic.h:129
clang::LookupResult::end
iterator end() const
Definition: Lookup.h:336
clang::UnqualifiedIdKind::IK_TemplateId
A template-id, e.g., f<int>.
clang::DeclSpec::Finish
void Finish(Sema &S, const PrintingPolicy &Policy)
Finish - This does final analysis of the declspec, issuing diagnostics for things like "_Imaginary" (...
Definition: DeclSpec.cpp:1069
clang::StringLiteral
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1711
TargetInfo.h
Defines the clang::TargetInfo interface.
clang::DeclSpec::isInlineSpecified
bool isInlineSpecified() const
Definition: DeclSpec.h:570
clang::Declarator::ExtendWithDeclSpec
void ExtendWithDeclSpec(const DeclSpec &DS)
ExtendWithDeclSpec - Extend the declarator source range to include the given declspec, unless its location is invalid.
Definition: DeclSpec.h:1949
clang::DeclSpec::getAtomicSpecLoc
SourceLocation getAtomicSpecLoc() const
Definition: DeclSpec.h:554
clang::ExprError
ExprResult ExprError()
Definition: Ownership.h:279
clang::Language::ObjC
clang::DeclSpec::TSW_longlong
static const TSW TSW_longlong
Definition: DeclSpec.h:256
getKind
static Decl::Kind getKind(const Decl *D)
Definition: DeclBase.cpp:947
clang::DeclSpec::getExplicitSpecLoc
SourceLocation getExplicitSpecLoc() const
Definition: DeclSpec.h:587
clang::DeclaratorContext::TemplateTypeArgContext
clang::DeclSpec::getConstexprSpecLoc
SourceLocation getConstexprSpecLoc() const
Definition: DeclSpec.h:750
attributeIsTypeArgAttr
static bool attributeIsTypeArgAttr(const IdentifierInfo &II)
Determine whether the given attribute parses a type argument.
Definition: ParseDecl.cpp:274
clang::DeclSpec::TST_atomic
static const TST TST_atomic
Definition: DeclSpec.h:306
clang::TST_unknown_anytype
Definition: Specifiers.h:94
attributeTreatsKeywordThisAsIdentifier
static bool attributeTreatsKeywordThisAsIdentifier(const IdentifierInfo &II)
Determine whether the given attribute treats kw_this as an identifier.
Definition: ParseDecl.cpp:265
clang::DeclSpec::isEmpty
bool isEmpty() const
isEmpty - Return true if this declaration specifier is completely empty: no tokens were parsed in the...
Definition: DeclSpec.h:637
clang::Qualifiers::addAddressSpace
void addAddressSpace(LangAS space)
Definition: Type.h:385
clang::DeclSpec::TST_struct
static const TST TST_struct
Definition: DeclSpec.h:294
clang::FixItHint
Annotates a diagnostic with some code that should be inserted, removed, or replaced to fix the proble...
Definition: Diagnostic.h:66
clang::DeclaratorChunk::ParamInfo
ParamInfo - An array of paraminfo objects is allocated whenever a function declarator is parsed...
Definition: DeclSpec.h:1250
clang::Declarator::getContext
DeclaratorContext getContext() const
Definition: DeclSpec.h:1920
clang::AttributeCommonInfo::getParsedKind
Kind getParsedKind() const
Definition: AttributeCommonInfo.h:126
clang::Token::setLocation
void setLocation(SourceLocation L)
Definition: Token.h:134
clang::CSK_constexpr
Definition: Specifiers.h:34
clang::DeclaratorChunk::Paren
Definition: DeclSpec.h:1176
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:207
clang::SuppressAccessChecks::done
void done()
Definition: RAIIObjectsForParser.h:68
clang::Sema::Context
ASTContext & Context
Definition: Sema.h:385
clang::DeclSpec::SetTypeSpecComplex
bool SetTypeSpecComplex(TSC C, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:682
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:223
clang::TagType
Definition: Type.h:4471
clang::DeclSpec::SetTypeSpecError
bool SetTypeSpecError()
Definition: DeclSpec.cpp:899
clang::DeclaratorContext::BlockLiteralContext
clang::UnqualifiedId::EndLocation
SourceLocation EndLocation
The location of the last token that describes this unqualified-id.
Definition: DeclSpec.h:1021
clang::LookupResult::begin
iterator begin() const
Definition: Lookup.h:335
clang::DeclSpec::TSCS__Thread_local
static const TSCS TSCS__Thread_local
Definition: DeclSpec.h:249
clang::format::FormatToken::isObjCAtKeyword
bool isObjCAtKeyword(tok::ObjCKeywordKind Kind) const
Definition: FormatToken.h:365
clang::CodeCompletionHandler
Callback handler that receives notifications when performing code completion within the preprocessor...
Definition: CodeCompletionHandler.h:25
clang::Token::getAnnotationValue
void * getAnnotationValue() const
Definition: Token.h:226
clang::Declarator::isFirstDeclarationOfMember
bool isFirstDeclarationOfMember()
Returns true if this declares a real member and not a friend.
Definition: DeclSpec.h:2558
clang::DeclSpec::SetRangeEnd
void SetRangeEnd(SourceLocation Loc)
Definition: DeclSpec.h:642
clang::DeclSpec::addAttributes
void addAttributes(ParsedAttributesView &AL)
Concatenates two attribute lists.
Definition: DeclSpec.h:781
clang::SourceRange::getBegin
SourceLocation getBegin() const
Definition: SourceLocation.h:216
clang::ParsedAttributes
ParsedAttributes - A collection of parsed attributes.
Definition: ParsedAttr.h:824
clang::Declarator::setCommaLoc
void setCommaLoc(SourceLocation CL)
Definition: DeclSpec.h:2539
clang::SourceManager
This class handles loading and caching of source files into memory.
Definition: SourceManager.h:596
clang::DeclaratorChunk::BlockPointer
Definition: DeclSpec.h:1176
clang::Parser::ParseConstraintLogicalOrExpression
ExprResult ParseConstraintLogicalOrExpression(bool IsTrailingRequiresClause)
Parse a constraint-logical-or-expression.
Definition: ParseExpr.cpp:349
clang::DeclaratorChunk::FunctionTypeInfo::Params
ParamInfo * Params
Params - This is a pointer to a new[]&#39;d array of ParamInfo objects that describe the parameters speci...
Definition: DeclSpec.h:1339
clang::Parser::ParseTypeName
TypeResult ParseTypeName(SourceRange *Range=nullptr, DeclaratorContext Context=DeclaratorContext::TypeNameContext, AccessSpecifier AS=AS_none, Decl **OwnedType=nullptr, ParsedAttributes *Attrs=nullptr)
ParseTypeName type-name: [C99 6.7.6] specifier-qualifier-list abstract-declarator[opt].
Definition: ParseDecl.cpp:42
clang::DeclSpec::getAttributes
ParsedAttributes & getAttributes()
Definition: DeclSpec.h:787
clang::Decl::getLocation
SourceLocation getLocation() const
Definition: DeclBase.h:429
clang::Token::startToken
void startToken()
Reset all flags to cleared.
Definition: Token.h:171
clang::DeclaratorContext::TemplateParamContext
clang::Sema::ActOnDeclarator
Decl * ActOnDeclarator(Scope *S, Declarator &D)
Definition: SemaDecl.cpp:5406
clang::Preprocessor
Engages in a tight little dance with the lexer to efficiently preprocess tokens.
Definition: Preprocessor.h:128
clang::NamedDecl::isCXXInstanceMember
bool isCXXInstanceMember() const
Determine whether the given declaration is an instance member of a C++ class.
Definition: Decl.cpp:1790
clang::DeclaratorChunk::getMemberPointer
static DeclaratorChunk getMemberPointer(const CXXScopeSpec &SS, unsigned TypeQuals, SourceLocation Loc)
Definition: DeclSpec.h:1661
clang::DeclSpec::setFunctionSpecInline
bool setFunctionSpecInline(SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID)
Definition: DeclSpec.cpp:938
clang::Parser::StopBeforeMatch
Stop skipping at specified token, but don&#39;t skip the token itself.
Definition: Parser.h:1100
clang::Sema::ActOnReenterTemplateScope
unsigned ActOnReenterTemplateScope(Scope *S, Decl *Template)
Definition: SemaDeclCXX.cpp:9663
clang::Token::getEndLoc
SourceLocation getEndLoc() const
Definition: Token.h:153