1 //===--- ParseDecl.cpp - Declaration Parsing --------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the Declaration portions of the Parser interfaces.
12 //===----------------------------------------------------------------------===//
14 #include "clang/Parse/Parser.h"
15 #include "RAIIObjectsForParser.h"
16 #include "clang/AST/ASTContext.h"
17 #include "clang/AST/DeclTemplate.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/PrettyDeclStackTrace.h"
26 #include "clang/Sema/Scope.h"
27 #include "clang/Sema/SemaDiagnostic.h"
28 #include "llvm/ADT/Optional.h"
29 #include "llvm/ADT/SmallSet.h"
30 #include "llvm/ADT/SmallString.h"
31 #include "llvm/ADT/StringSwitch.h"
32 #include "llvm/Support/ScopedPrinter.h"
34 using namespace clang;
36 //===----------------------------------------------------------------------===//
37 // C99 6.7: Declarations.
38 //===----------------------------------------------------------------------===//
41 /// type-name: [C99 6.7.6]
42 /// specifier-qualifier-list abstract-declarator[opt]
44 /// Called type-id in C++.
45 TypeResult Parser::ParseTypeName(SourceRange *Range,
46 Declarator::TheContext Context,
49 ParsedAttributes *Attrs) {
50 DeclSpecContext DSC = getDeclSpecContextFromDeclaratorContext(Context);
51 if (DSC == DSC_normal)
52 DSC = DSC_type_specifier;
54 // Parse the common declaration-specifiers piece.
55 DeclSpec DS(AttrFactory);
57 DS.addAttributes(Attrs->getList());
58 ParseSpecifierQualifierList(DS, AS, DSC);
60 *OwnedType = DS.isTypeSpecOwned() ? DS.getRepAsDecl() : nullptr;
62 // Parse the abstract-declarator, if present.
63 Declarator DeclaratorInfo(DS, Context);
64 ParseDeclarator(DeclaratorInfo);
66 *Range = DeclaratorInfo.getSourceRange();
68 if (DeclaratorInfo.isInvalidType())
71 return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
74 /// isAttributeLateParsed - Return true if the attribute has arguments that
75 /// require late parsing.
76 static bool isAttributeLateParsed(const IdentifierInfo &II) {
77 #define CLANG_ATTR_LATE_PARSED_LIST
78 return llvm::StringSwitch<bool>(II.getName())
79 #include "clang/Parse/AttrParserStringSwitches.inc"
81 #undef CLANG_ATTR_LATE_PARSED_LIST
84 /// ParseGNUAttributes - Parse a non-empty attributes list.
88 /// attributes attribute
91 /// '__attribute__' '(' '(' attribute-list ')' ')'
93 /// [GNU] attribute-list:
95 /// attribute_list ',' attrib
100 /// attrib-name '(' identifier ')'
101 /// attrib-name '(' identifier ',' nonempty-expr-list ')'
102 /// attrib-name '(' argument-expression-list [C99 6.5.2] ')'
104 /// [GNU] attrib-name:
110 /// Whether an attribute takes an 'identifier' is determined by the
111 /// attrib-name. GCC's behavior here is not worth imitating:
113 /// * In C mode, if the attribute argument list starts with an identifier
114 /// followed by a ',' or an ')', and the identifier doesn't resolve to
115 /// a type, it is parsed as an identifier. If the attribute actually
116 /// wanted an expression, it's out of luck (but it turns out that no
117 /// attributes work that way, because C constant expressions are very
119 /// * In C++ mode, if the attribute argument list starts with an identifier,
120 /// and the attribute *wants* an identifier, it is parsed as an identifier.
121 /// At block scope, any additional tokens between the identifier and the
122 /// ',' or ')' are ignored, otherwise they produce a parse error.
124 /// We follow the C++ model, but don't allow junk after the identifier.
125 void Parser::ParseGNUAttributes(ParsedAttributes &attrs,
126 SourceLocation *endLoc,
127 LateParsedAttrList *LateAttrs,
129 assert(Tok.is(tok::kw___attribute) && "Not a GNU attribute list!");
131 while (Tok.is(tok::kw___attribute)) {
133 if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after,
135 SkipUntil(tok::r_paren, StopAtSemi); // skip until ) or ;
138 if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after, "(")) {
139 SkipUntil(tok::r_paren, StopAtSemi); // skip until ) or ;
142 // Parse the attribute-list. e.g. __attribute__(( weak, alias("__f") ))
144 // Allow empty/non-empty attributes. ((__vector_size__(16),,,,))
145 if (TryConsumeToken(tok::comma))
148 // Expect an identifier or declaration specifier (const, int, etc.)
149 if (Tok.isAnnotation())
151 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
155 SourceLocation AttrNameLoc = ConsumeToken();
157 if (Tok.isNot(tok::l_paren)) {
158 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
159 AttributeList::AS_GNU);
163 // Handle "parameterized" attributes
164 if (!LateAttrs || !isAttributeLateParsed(*AttrName)) {
165 ParseGNUAttributeArgs(AttrName, AttrNameLoc, attrs, endLoc, nullptr,
166 SourceLocation(), AttributeList::AS_GNU, D);
170 // Handle attributes with arguments that require late parsing.
171 LateParsedAttribute *LA =
172 new LateParsedAttribute(this, *AttrName, AttrNameLoc);
173 LateAttrs->push_back(LA);
175 // Attributes in a class are parsed at the end of the class, along
176 // with other late-parsed declarations.
177 if (!ClassStack.empty() && !LateAttrs->parseSoon())
178 getCurrentClass().LateParsedDeclarations.push_back(LA);
180 // consume everything up to and including the matching right parens
181 ConsumeAndStoreUntil(tok::r_paren, LA->Toks, true, false);
185 Eof.setLocation(Tok.getLocation());
186 LA->Toks.push_back(Eof);
189 if (ExpectAndConsume(tok::r_paren))
190 SkipUntil(tok::r_paren, StopAtSemi);
191 SourceLocation Loc = Tok.getLocation();
192 if (ExpectAndConsume(tok::r_paren))
193 SkipUntil(tok::r_paren, StopAtSemi);
199 /// \brief Normalizes an attribute name by dropping prefixed and suffixed __.
200 static StringRef normalizeAttrName(StringRef Name) {
201 if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
202 Name = Name.drop_front(2).drop_back(2);
206 /// \brief Determine whether the given attribute has an identifier argument.
207 static bool attributeHasIdentifierArg(const IdentifierInfo &II) {
208 #define CLANG_ATTR_IDENTIFIER_ARG_LIST
209 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
210 #include "clang/Parse/AttrParserStringSwitches.inc"
212 #undef CLANG_ATTR_IDENTIFIER_ARG_LIST
215 /// \brief Determine whether the given attribute parses a type argument.
216 static bool attributeIsTypeArgAttr(const IdentifierInfo &II) {
217 #define CLANG_ATTR_TYPE_ARG_LIST
218 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
219 #include "clang/Parse/AttrParserStringSwitches.inc"
221 #undef CLANG_ATTR_TYPE_ARG_LIST
224 /// \brief Determine whether the given attribute requires parsing its arguments
225 /// in an unevaluated context or not.
226 static bool attributeParsedArgsUnevaluated(const IdentifierInfo &II) {
227 #define CLANG_ATTR_ARG_CONTEXT_LIST
228 return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
229 #include "clang/Parse/AttrParserStringSwitches.inc"
231 #undef CLANG_ATTR_ARG_CONTEXT_LIST
234 IdentifierLoc *Parser::ParseIdentifierLoc() {
235 assert(Tok.is(tok::identifier) && "expected an identifier");
236 IdentifierLoc *IL = IdentifierLoc::create(Actions.Context,
238 Tok.getIdentifierInfo());
243 void Parser::ParseAttributeWithTypeArg(IdentifierInfo &AttrName,
244 SourceLocation AttrNameLoc,
245 ParsedAttributes &Attrs,
246 SourceLocation *EndLoc,
247 IdentifierInfo *ScopeName,
248 SourceLocation ScopeLoc,
249 AttributeList::Syntax Syntax) {
250 BalancedDelimiterTracker Parens(*this, tok::l_paren);
251 Parens.consumeOpen();
254 if (Tok.isNot(tok::r_paren))
257 if (Parens.consumeClose())
264 Attrs.addNewTypeAttr(&AttrName,
265 SourceRange(AttrNameLoc, Parens.getCloseLocation()),
266 ScopeName, ScopeLoc, T.get(), Syntax);
268 Attrs.addNew(&AttrName, SourceRange(AttrNameLoc, Parens.getCloseLocation()),
269 ScopeName, ScopeLoc, nullptr, 0, Syntax);
272 unsigned Parser::ParseAttributeArgsCommon(
273 IdentifierInfo *AttrName, SourceLocation AttrNameLoc,
274 ParsedAttributes &Attrs, SourceLocation *EndLoc, IdentifierInfo *ScopeName,
275 SourceLocation ScopeLoc, AttributeList::Syntax Syntax) {
276 // Ignore the left paren location for now.
280 if (Tok.is(tok::identifier)) {
281 // If this attribute wants an 'identifier' argument, make it so.
282 bool IsIdentifierArg = attributeHasIdentifierArg(*AttrName);
283 AttributeList::Kind AttrKind =
284 AttributeList::getKind(AttrName, ScopeName, Syntax);
286 // If we don't know how to parse this attribute, but this is the only
287 // token in this argument, assume it's meant to be an identifier.
288 if (AttrKind == AttributeList::UnknownAttribute ||
289 AttrKind == AttributeList::IgnoredAttribute) {
290 const Token &Next = NextToken();
291 IsIdentifierArg = Next.isOneOf(tok::r_paren, tok::comma);
295 ArgExprs.push_back(ParseIdentifierLoc());
298 if (!ArgExprs.empty() ? Tok.is(tok::comma) : Tok.isNot(tok::r_paren)) {
300 if (!ArgExprs.empty())
303 // Parse the non-empty comma-separated list of expressions.
305 bool ShouldEnter = attributeParsedArgsUnevaluated(*AttrName);
306 EnterExpressionEvaluationContext Unevaluated(
307 Actions, Sema::Unevaluated, /*LambdaContextDecl=*/nullptr,
308 /*IsDecltype=*/false, ShouldEnter);
311 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()));
312 if (ArgExpr.isInvalid()) {
313 SkipUntil(tok::r_paren, StopAtSemi);
316 ArgExprs.push_back(ArgExpr.get());
317 // Eat the comma, move to the next argument
318 } while (TryConsumeToken(tok::comma));
321 SourceLocation RParen = Tok.getLocation();
322 if (!ExpectAndConsume(tok::r_paren)) {
323 SourceLocation AttrLoc = ScopeLoc.isValid() ? ScopeLoc : AttrNameLoc;
324 Attrs.addNew(AttrName, SourceRange(AttrLoc, RParen), ScopeName, ScopeLoc,
325 ArgExprs.data(), ArgExprs.size(), Syntax);
331 return static_cast<unsigned>(ArgExprs.size());
334 /// Parse the arguments to a parameterized GNU attribute or
335 /// a C++11 attribute in "gnu" namespace.
336 void Parser::ParseGNUAttributeArgs(IdentifierInfo *AttrName,
337 SourceLocation AttrNameLoc,
338 ParsedAttributes &Attrs,
339 SourceLocation *EndLoc,
340 IdentifierInfo *ScopeName,
341 SourceLocation ScopeLoc,
342 AttributeList::Syntax Syntax,
345 assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
347 AttributeList::Kind AttrKind =
348 AttributeList::getKind(AttrName, ScopeName, Syntax);
350 if (AttrKind == AttributeList::AT_Availability) {
351 ParseAvailabilityAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
354 } else if (AttrKind == AttributeList::AT_ObjCBridgeRelated) {
355 ParseObjCBridgeRelatedAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
356 ScopeName, ScopeLoc, Syntax);
358 } else if (AttrKind == AttributeList::AT_TypeTagForDatatype) {
359 ParseTypeTagForDatatypeAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
360 ScopeName, ScopeLoc, Syntax);
362 } else if (attributeIsTypeArgAttr(*AttrName)) {
363 ParseAttributeWithTypeArg(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
368 // These may refer to the function arguments, but need to be parsed early to
369 // participate in determining whether it's a redeclaration.
370 llvm::Optional<ParseScope> PrototypeScope;
371 if (normalizeAttrName(AttrName->getName()) == "enable_if" &&
372 D && D->isFunctionDeclarator()) {
373 DeclaratorChunk::FunctionTypeInfo FTI = D->getFunctionTypeInfo();
374 PrototypeScope.emplace(this, Scope::FunctionPrototypeScope |
375 Scope::FunctionDeclarationScope |
377 for (unsigned i = 0; i != FTI.NumParams; ++i) {
378 ParmVarDecl *Param = cast<ParmVarDecl>(FTI.Params[i].Param);
379 Actions.ActOnReenterCXXMethodParameter(getCurScope(), Param);
383 ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
387 bool Parser::ParseMicrosoftDeclSpecArgs(IdentifierInfo *AttrName,
388 SourceLocation AttrNameLoc,
389 ParsedAttributes &Attrs) {
390 // If the attribute isn't known, we will not attempt to parse any
392 if (!hasAttribute(AttrSyntax::Declspec, nullptr, AttrName,
393 getTargetInfo(), getLangOpts())) {
394 // Eat the left paren, then skip to the ending right paren.
396 SkipUntil(tok::r_paren);
400 SourceLocation OpenParenLoc = Tok.getLocation();
402 if (AttrName->getName() == "property") {
403 // The property declspec is more complex in that it can take one or two
404 // assignment expressions as a parameter, but the lhs of the assignment
405 // must be named get or put.
407 BalancedDelimiterTracker T(*this, tok::l_paren);
408 T.expectAndConsume(diag::err_expected_lparen_after,
409 AttrName->getNameStart(), tok::r_paren);
414 AK_Get = 1 // indices into AccessorNames
416 IdentifierInfo *AccessorNames[] = {nullptr, nullptr};
417 bool HasInvalidAccessor = false;
419 // Parse the accessor specifications.
421 // Stop if this doesn't look like an accessor spec.
422 if (!Tok.is(tok::identifier)) {
423 // If the user wrote a completely empty list, use a special diagnostic.
424 if (Tok.is(tok::r_paren) && !HasInvalidAccessor &&
425 AccessorNames[AK_Put] == nullptr &&
426 AccessorNames[AK_Get] == nullptr) {
427 Diag(AttrNameLoc, diag::err_ms_property_no_getter_or_putter);
431 Diag(Tok.getLocation(), diag::err_ms_property_unknown_accessor);
436 SourceLocation KindLoc = Tok.getLocation();
437 StringRef KindStr = Tok.getIdentifierInfo()->getName();
438 if (KindStr == "get") {
440 } else if (KindStr == "put") {
443 // Recover from the common mistake of using 'set' instead of 'put'.
444 } else if (KindStr == "set") {
445 Diag(KindLoc, diag::err_ms_property_has_set_accessor)
446 << FixItHint::CreateReplacement(KindLoc, "put");
449 // Handle the mistake of forgetting the accessor kind by skipping
451 } else if (NextToken().is(tok::comma) || NextToken().is(tok::r_paren)) {
452 Diag(KindLoc, diag::err_ms_property_missing_accessor_kind);
454 HasInvalidAccessor = true;
455 goto next_property_accessor;
457 // Otherwise, complain about the unknown accessor kind.
459 Diag(KindLoc, diag::err_ms_property_unknown_accessor);
460 HasInvalidAccessor = true;
463 // Try to keep parsing unless it doesn't look like an accessor spec.
464 if (!NextToken().is(tok::equal))
468 // Consume the identifier.
472 if (!TryConsumeToken(tok::equal)) {
473 Diag(Tok.getLocation(), diag::err_ms_property_expected_equal)
478 // Expect the method name.
479 if (!Tok.is(tok::identifier)) {
480 Diag(Tok.getLocation(), diag::err_ms_property_expected_accessor_name);
484 if (Kind == AK_Invalid) {
485 // Just drop invalid accessors.
486 } else if (AccessorNames[Kind] != nullptr) {
487 // Complain about the repeated accessor, ignore it, and keep parsing.
488 Diag(KindLoc, diag::err_ms_property_duplicate_accessor) << KindStr;
490 AccessorNames[Kind] = Tok.getIdentifierInfo();
494 next_property_accessor:
495 // Keep processing accessors until we run out.
496 if (TryConsumeToken(tok::comma))
499 // If we run into the ')', stop without consuming it.
500 if (Tok.is(tok::r_paren))
503 Diag(Tok.getLocation(), diag::err_ms_property_expected_comma_or_rparen);
507 // Only add the property attribute if it was well-formed.
508 if (!HasInvalidAccessor)
509 Attrs.addNewPropertyAttr(AttrName, AttrNameLoc, nullptr, SourceLocation(),
510 AccessorNames[AK_Get], AccessorNames[AK_Put],
511 AttributeList::AS_Declspec);
513 return !HasInvalidAccessor;
517 ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, nullptr, nullptr,
518 SourceLocation(), AttributeList::AS_Declspec);
520 // If this attribute's args were parsed, and it was expected to have
521 // arguments but none were provided, emit a diagnostic.
522 const AttributeList *Attr = Attrs.getList();
523 if (Attr && Attr->getMaxArgs() && !NumArgs) {
524 Diag(OpenParenLoc, diag::err_attribute_requires_arguments) << AttrName;
530 /// [MS] decl-specifier:
531 /// __declspec ( extended-decl-modifier-seq )
533 /// [MS] extended-decl-modifier-seq:
534 /// extended-decl-modifier[opt]
535 /// extended-decl-modifier extended-decl-modifier-seq
536 void Parser::ParseMicrosoftDeclSpecs(ParsedAttributes &Attrs,
537 SourceLocation *End) {
538 assert(getLangOpts().DeclSpecKeyword && "__declspec keyword is not enabled");
539 assert(Tok.is(tok::kw___declspec) && "Not a declspec!");
541 while (Tok.is(tok::kw___declspec)) {
543 BalancedDelimiterTracker T(*this, tok::l_paren);
544 if (T.expectAndConsume(diag::err_expected_lparen_after, "__declspec",
548 // An empty declspec is perfectly legal and should not warn. Additionally,
549 // you can specify multiple attributes per declspec.
550 while (Tok.isNot(tok::r_paren)) {
551 // Attribute not present.
552 if (TryConsumeToken(tok::comma))
555 // We expect either a well-known identifier or a generic string. Anything
556 // else is a malformed declspec.
557 bool IsString = Tok.getKind() == tok::string_literal;
558 if (!IsString && Tok.getKind() != tok::identifier &&
559 Tok.getKind() != tok::kw_restrict) {
560 Diag(Tok, diag::err_ms_declspec_type);
565 IdentifierInfo *AttrName;
566 SourceLocation AttrNameLoc;
568 SmallString<8> StrBuffer;
569 bool Invalid = false;
570 StringRef Str = PP.getSpelling(Tok, StrBuffer, &Invalid);
575 AttrName = PP.getIdentifierInfo(Str);
576 AttrNameLoc = ConsumeStringToken();
578 AttrName = Tok.getIdentifierInfo();
579 AttrNameLoc = ConsumeToken();
582 bool AttrHandled = false;
584 // Parse attribute arguments.
585 if (Tok.is(tok::l_paren))
586 AttrHandled = ParseMicrosoftDeclSpecArgs(AttrName, AttrNameLoc, Attrs);
587 else if (AttrName->getName() == "property")
588 // The property attribute must have an argument list.
589 Diag(Tok.getLocation(), diag::err_expected_lparen_after)
590 << AttrName->getName();
593 Attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
594 AttributeList::AS_Declspec);
598 *End = T.getCloseLocation();
602 void Parser::ParseMicrosoftTypeAttributes(ParsedAttributes &attrs) {
603 // Treat these like attributes
605 switch (Tok.getKind()) {
606 case tok::kw___fastcall:
607 case tok::kw___stdcall:
608 case tok::kw___thiscall:
609 case tok::kw___regcall:
610 case tok::kw___cdecl:
611 case tok::kw___vectorcall:
612 case tok::kw___ptr64:
614 case tok::kw___ptr32:
616 case tok::kw___uptr: {
617 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
618 SourceLocation AttrNameLoc = ConsumeToken();
619 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
620 AttributeList::AS_Keyword);
629 void Parser::DiagnoseAndSkipExtendedMicrosoftTypeAttributes() {
630 SourceLocation StartLoc = Tok.getLocation();
631 SourceLocation EndLoc = SkipExtendedMicrosoftTypeAttributes();
633 if (EndLoc.isValid()) {
634 SourceRange Range(StartLoc, EndLoc);
635 Diag(StartLoc, diag::warn_microsoft_qualifiers_ignored) << Range;
639 SourceLocation Parser::SkipExtendedMicrosoftTypeAttributes() {
640 SourceLocation EndLoc;
643 switch (Tok.getKind()) {
645 case tok::kw_volatile:
646 case tok::kw___fastcall:
647 case tok::kw___stdcall:
648 case tok::kw___thiscall:
649 case tok::kw___cdecl:
650 case tok::kw___vectorcall:
651 case tok::kw___ptr32:
652 case tok::kw___ptr64:
654 case tok::kw___unaligned:
657 EndLoc = ConsumeToken();
665 void Parser::ParseBorlandTypeAttributes(ParsedAttributes &attrs) {
666 // Treat these like attributes
667 while (Tok.is(tok::kw___pascal)) {
668 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
669 SourceLocation AttrNameLoc = ConsumeToken();
670 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
671 AttributeList::AS_Keyword);
675 void Parser::ParseOpenCLKernelAttributes(ParsedAttributes &attrs) {
676 // Treat these like attributes
677 while (Tok.is(tok::kw___kernel)) {
678 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
679 SourceLocation AttrNameLoc = ConsumeToken();
680 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
681 AttributeList::AS_Keyword);
685 void Parser::ParseOpenCLQualifiers(ParsedAttributes &Attrs) {
686 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
687 SourceLocation AttrNameLoc = Tok.getLocation();
688 Attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
689 AttributeList::AS_Keyword);
692 void Parser::ParseNullabilityTypeSpecifiers(ParsedAttributes &attrs) {
693 // Treat these like attributes, even though they're type specifiers.
695 switch (Tok.getKind()) {
696 case tok::kw__Nonnull:
697 case tok::kw__Nullable:
698 case tok::kw__Null_unspecified: {
699 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
700 SourceLocation AttrNameLoc = ConsumeToken();
701 if (!getLangOpts().ObjC1)
702 Diag(AttrNameLoc, diag::ext_nullability)
704 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
705 AttributeList::AS_Keyword);
714 static bool VersionNumberSeparator(const char Separator) {
715 return (Separator == '.' || Separator == '_');
718 /// \brief Parse a version number.
722 /// simple-integer ',' simple-integer
723 /// simple-integer ',' simple-integer ',' simple-integer
724 VersionTuple Parser::ParseVersionTuple(SourceRange &Range) {
725 Range = SourceRange(Tok.getLocation(), Tok.getEndLoc());
727 if (!Tok.is(tok::numeric_constant)) {
728 Diag(Tok, diag::err_expected_version);
729 SkipUntil(tok::comma, tok::r_paren,
730 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
731 return VersionTuple();
734 // Parse the major (and possibly minor and subminor) versions, which
735 // are stored in the numeric constant. We utilize a quirk of the
736 // lexer, which is that it handles something like 1.2.3 as a single
737 // numeric constant, rather than two separate tokens.
738 SmallString<512> Buffer;
739 Buffer.resize(Tok.getLength()+1);
740 const char *ThisTokBegin = &Buffer[0];
742 // Get the spelling of the token, which eliminates trigraphs, etc.
743 bool Invalid = false;
744 unsigned ActualLength = PP.getSpelling(Tok, ThisTokBegin, &Invalid);
746 return VersionTuple();
748 // Parse the major version.
749 unsigned AfterMajor = 0;
751 while (AfterMajor < ActualLength && isDigit(ThisTokBegin[AfterMajor])) {
752 Major = Major * 10 + ThisTokBegin[AfterMajor] - '0';
756 if (AfterMajor == 0) {
757 Diag(Tok, diag::err_expected_version);
758 SkipUntil(tok::comma, tok::r_paren,
759 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
760 return VersionTuple();
763 if (AfterMajor == ActualLength) {
766 // We only had a single version component.
768 Diag(Tok, diag::err_zero_version);
769 return VersionTuple();
772 return VersionTuple(Major);
775 const char AfterMajorSeparator = ThisTokBegin[AfterMajor];
776 if (!VersionNumberSeparator(AfterMajorSeparator)
777 || (AfterMajor + 1 == ActualLength)) {
778 Diag(Tok, diag::err_expected_version);
779 SkipUntil(tok::comma, tok::r_paren,
780 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
781 return VersionTuple();
784 // Parse the minor version.
785 unsigned AfterMinor = AfterMajor + 1;
787 while (AfterMinor < ActualLength && isDigit(ThisTokBegin[AfterMinor])) {
788 Minor = Minor * 10 + ThisTokBegin[AfterMinor] - '0';
792 if (AfterMinor == ActualLength) {
795 // We had major.minor.
796 if (Major == 0 && Minor == 0) {
797 Diag(Tok, diag::err_zero_version);
798 return VersionTuple();
801 return VersionTuple(Major, Minor, (AfterMajorSeparator == '_'));
804 const char AfterMinorSeparator = ThisTokBegin[AfterMinor];
805 // If what follows is not a '.' or '_', we have a problem.
806 if (!VersionNumberSeparator(AfterMinorSeparator)) {
807 Diag(Tok, diag::err_expected_version);
808 SkipUntil(tok::comma, tok::r_paren,
809 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
810 return VersionTuple();
813 // Warn if separators, be it '.' or '_', do not match.
814 if (AfterMajorSeparator != AfterMinorSeparator)
815 Diag(Tok, diag::warn_expected_consistent_version_separator);
817 // Parse the subminor version.
818 unsigned AfterSubminor = AfterMinor + 1;
819 unsigned Subminor = 0;
820 while (AfterSubminor < ActualLength && isDigit(ThisTokBegin[AfterSubminor])) {
821 Subminor = Subminor * 10 + ThisTokBegin[AfterSubminor] - '0';
825 if (AfterSubminor != ActualLength) {
826 Diag(Tok, diag::err_expected_version);
827 SkipUntil(tok::comma, tok::r_paren,
828 StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
829 return VersionTuple();
832 return VersionTuple(Major, Minor, Subminor, (AfterMajorSeparator == '_'));
835 /// \brief Parse the contents of the "availability" attribute.
837 /// availability-attribute:
838 /// 'availability' '(' platform ',' opt-strict version-arg-list,
839 /// opt-replacement, opt-message')'
847 /// version-arg-list:
849 /// version-arg ',' version-arg-list
852 /// 'introduced' '=' version
853 /// 'deprecated' '=' version
854 /// 'obsoleted' = version
857 /// 'replacement' '=' <string>
859 /// 'message' '=' <string>
860 void Parser::ParseAvailabilityAttribute(IdentifierInfo &Availability,
861 SourceLocation AvailabilityLoc,
862 ParsedAttributes &attrs,
863 SourceLocation *endLoc,
864 IdentifierInfo *ScopeName,
865 SourceLocation ScopeLoc,
866 AttributeList::Syntax Syntax) {
867 enum { Introduced, Deprecated, Obsoleted, Unknown };
868 AvailabilityChange Changes[Unknown];
869 ExprResult MessageExpr, ReplacementExpr;
872 BalancedDelimiterTracker T(*this, tok::l_paren);
873 if (T.consumeOpen()) {
874 Diag(Tok, diag::err_expected) << tok::l_paren;
878 // Parse the platform name.
879 if (Tok.isNot(tok::identifier)) {
880 Diag(Tok, diag::err_availability_expected_platform);
881 SkipUntil(tok::r_paren, StopAtSemi);
884 IdentifierLoc *Platform = ParseIdentifierLoc();
885 // Canonicalize platform name from "macosx" to "macos".
886 if (Platform->Ident && Platform->Ident->getName() == "macosx")
887 Platform->Ident = PP.getIdentifierInfo("macos");
888 // Canonicalize platform name from "macosx_app_extension" to
889 // "macos_app_extension".
890 if (Platform->Ident && Platform->Ident->getName() == "macosx_app_extension")
891 Platform->Ident = PP.getIdentifierInfo("macos_app_extension");
893 // Parse the ',' following the platform name.
894 if (ExpectAndConsume(tok::comma)) {
895 SkipUntil(tok::r_paren, StopAtSemi);
899 // If we haven't grabbed the pointers for the identifiers
900 // "introduced", "deprecated", and "obsoleted", do so now.
901 if (!Ident_introduced) {
902 Ident_introduced = PP.getIdentifierInfo("introduced");
903 Ident_deprecated = PP.getIdentifierInfo("deprecated");
904 Ident_obsoleted = PP.getIdentifierInfo("obsoleted");
905 Ident_unavailable = PP.getIdentifierInfo("unavailable");
906 Ident_message = PP.getIdentifierInfo("message");
907 Ident_strict = PP.getIdentifierInfo("strict");
908 Ident_replacement = PP.getIdentifierInfo("replacement");
911 // Parse the optional "strict", the optional "replacement" and the set of
912 // introductions/deprecations/removals.
913 SourceLocation UnavailableLoc, StrictLoc;
915 if (Tok.isNot(tok::identifier)) {
916 Diag(Tok, diag::err_availability_expected_change);
917 SkipUntil(tok::r_paren, StopAtSemi);
920 IdentifierInfo *Keyword = Tok.getIdentifierInfo();
921 SourceLocation KeywordLoc = ConsumeToken();
923 if (Keyword == Ident_strict) {
924 if (StrictLoc.isValid()) {
925 Diag(KeywordLoc, diag::err_availability_redundant)
926 << Keyword << SourceRange(StrictLoc);
928 StrictLoc = KeywordLoc;
932 if (Keyword == Ident_unavailable) {
933 if (UnavailableLoc.isValid()) {
934 Diag(KeywordLoc, diag::err_availability_redundant)
935 << Keyword << SourceRange(UnavailableLoc);
937 UnavailableLoc = KeywordLoc;
941 if (Tok.isNot(tok::equal)) {
942 Diag(Tok, diag::err_expected_after) << Keyword << tok::equal;
943 SkipUntil(tok::r_paren, StopAtSemi);
947 if (Keyword == Ident_message || Keyword == Ident_replacement) {
948 if (Tok.isNot(tok::string_literal)) {
949 Diag(Tok, diag::err_expected_string_literal)
950 << /*Source='availability attribute'*/2;
951 SkipUntil(tok::r_paren, StopAtSemi);
954 if (Keyword == Ident_message)
955 MessageExpr = ParseStringLiteralExpression();
957 ReplacementExpr = ParseStringLiteralExpression();
958 // Also reject wide string literals.
959 if (StringLiteral *MessageStringLiteral =
960 cast_or_null<StringLiteral>(MessageExpr.get())) {
961 if (MessageStringLiteral->getCharByteWidth() != 1) {
962 Diag(MessageStringLiteral->getSourceRange().getBegin(),
963 diag::err_expected_string_literal)
964 << /*Source='availability attribute'*/ 2;
965 SkipUntil(tok::r_paren, StopAtSemi);
969 if (Keyword == Ident_message)
975 // Special handling of 'NA' only when applied to introduced or
977 if ((Keyword == Ident_introduced || Keyword == Ident_deprecated) &&
978 Tok.is(tok::identifier)) {
979 IdentifierInfo *NA = Tok.getIdentifierInfo();
980 if (NA->getName() == "NA") {
982 if (Keyword == Ident_introduced)
983 UnavailableLoc = KeywordLoc;
988 SourceRange VersionRange;
989 VersionTuple Version = ParseVersionTuple(VersionRange);
991 if (Version.empty()) {
992 SkipUntil(tok::r_paren, StopAtSemi);
997 if (Keyword == Ident_introduced)
999 else if (Keyword == Ident_deprecated)
1001 else if (Keyword == Ident_obsoleted)
1006 if (Index < Unknown) {
1007 if (!Changes[Index].KeywordLoc.isInvalid()) {
1008 Diag(KeywordLoc, diag::err_availability_redundant)
1010 << SourceRange(Changes[Index].KeywordLoc,
1011 Changes[Index].VersionRange.getEnd());
1014 Changes[Index].KeywordLoc = KeywordLoc;
1015 Changes[Index].Version = Version;
1016 Changes[Index].VersionRange = VersionRange;
1018 Diag(KeywordLoc, diag::err_availability_unknown_change)
1019 << Keyword << VersionRange;
1022 } while (TryConsumeToken(tok::comma));
1025 if (T.consumeClose())
1029 *endLoc = T.getCloseLocation();
1031 // The 'unavailable' availability cannot be combined with any other
1032 // availability changes. Make sure that hasn't happened.
1033 if (UnavailableLoc.isValid()) {
1034 bool Complained = false;
1035 for (unsigned Index = Introduced; Index != Unknown; ++Index) {
1036 if (Changes[Index].KeywordLoc.isValid()) {
1038 Diag(UnavailableLoc, diag::warn_availability_and_unavailable)
1039 << SourceRange(Changes[Index].KeywordLoc,
1040 Changes[Index].VersionRange.getEnd());
1044 // Clear out the availability.
1045 Changes[Index] = AvailabilityChange();
1050 // Record this attribute
1051 attrs.addNew(&Availability,
1052 SourceRange(AvailabilityLoc, T.getCloseLocation()),
1053 ScopeName, ScopeLoc,
1055 Changes[Introduced],
1056 Changes[Deprecated],
1058 UnavailableLoc, MessageExpr.get(),
1059 Syntax, StrictLoc, ReplacementExpr.get());
1062 /// \brief Parse the contents of the "objc_bridge_related" attribute.
1063 /// objc_bridge_related '(' related_class ',' opt-class_method ',' opt-instance_method ')'
1067 /// opt-class_method:
1068 /// Identifier: | <empty>
1070 /// opt-instance_method:
1071 /// Identifier | <empty>
1073 void Parser::ParseObjCBridgeRelatedAttribute(IdentifierInfo &ObjCBridgeRelated,
1074 SourceLocation ObjCBridgeRelatedLoc,
1075 ParsedAttributes &attrs,
1076 SourceLocation *endLoc,
1077 IdentifierInfo *ScopeName,
1078 SourceLocation ScopeLoc,
1079 AttributeList::Syntax Syntax) {
1081 BalancedDelimiterTracker T(*this, tok::l_paren);
1082 if (T.consumeOpen()) {
1083 Diag(Tok, diag::err_expected) << tok::l_paren;
1087 // Parse the related class name.
1088 if (Tok.isNot(tok::identifier)) {
1089 Diag(Tok, diag::err_objcbridge_related_expected_related_class);
1090 SkipUntil(tok::r_paren, StopAtSemi);
1093 IdentifierLoc *RelatedClass = ParseIdentifierLoc();
1094 if (ExpectAndConsume(tok::comma)) {
1095 SkipUntil(tok::r_paren, StopAtSemi);
1099 // Parse optional class method name.
1100 IdentifierLoc *ClassMethod = nullptr;
1101 if (Tok.is(tok::identifier)) {
1102 ClassMethod = ParseIdentifierLoc();
1103 if (!TryConsumeToken(tok::colon)) {
1104 Diag(Tok, diag::err_objcbridge_related_selector_name);
1105 SkipUntil(tok::r_paren, StopAtSemi);
1109 if (!TryConsumeToken(tok::comma)) {
1110 if (Tok.is(tok::colon))
1111 Diag(Tok, diag::err_objcbridge_related_selector_name);
1113 Diag(Tok, diag::err_expected) << tok::comma;
1114 SkipUntil(tok::r_paren, StopAtSemi);
1118 // Parse optional instance method name.
1119 IdentifierLoc *InstanceMethod = nullptr;
1120 if (Tok.is(tok::identifier))
1121 InstanceMethod = ParseIdentifierLoc();
1122 else if (Tok.isNot(tok::r_paren)) {
1123 Diag(Tok, diag::err_expected) << tok::r_paren;
1124 SkipUntil(tok::r_paren, StopAtSemi);
1129 if (T.consumeClose())
1133 *endLoc = T.getCloseLocation();
1135 // Record this attribute
1136 attrs.addNew(&ObjCBridgeRelated,
1137 SourceRange(ObjCBridgeRelatedLoc, T.getCloseLocation()),
1138 ScopeName, ScopeLoc,
1145 // Late Parsed Attributes:
1146 // See other examples of late parsing in lib/Parse/ParseCXXInlineMethods
1148 void Parser::LateParsedDeclaration::ParseLexedAttributes() {}
1150 void Parser::LateParsedClass::ParseLexedAttributes() {
1151 Self->ParseLexedAttributes(*Class);
1154 void Parser::LateParsedAttribute::ParseLexedAttributes() {
1155 Self->ParseLexedAttribute(*this, true, false);
1158 /// Wrapper class which calls ParseLexedAttribute, after setting up the
1159 /// scope appropriately.
1160 void Parser::ParseLexedAttributes(ParsingClass &Class) {
1161 // Deal with templates
1162 // FIXME: Test cases to make sure this does the right thing for templates.
1163 bool HasTemplateScope = !Class.TopLevelClass && Class.TemplateScope;
1164 ParseScope ClassTemplateScope(this, Scope::TemplateParamScope,
1166 if (HasTemplateScope)
1167 Actions.ActOnReenterTemplateScope(getCurScope(), Class.TagOrTemplate);
1169 // Set or update the scope flags.
1170 bool AlreadyHasClassScope = Class.TopLevelClass;
1171 unsigned ScopeFlags = Scope::ClassScope|Scope::DeclScope;
1172 ParseScope ClassScope(this, ScopeFlags, !AlreadyHasClassScope);
1173 ParseScopeFlags ClassScopeFlags(this, ScopeFlags, AlreadyHasClassScope);
1175 // Enter the scope of nested classes
1176 if (!AlreadyHasClassScope)
1177 Actions.ActOnStartDelayedMemberDeclarations(getCurScope(),
1178 Class.TagOrTemplate);
1179 if (!Class.LateParsedDeclarations.empty()) {
1180 for (unsigned i = 0, ni = Class.LateParsedDeclarations.size(); i < ni; ++i){
1181 Class.LateParsedDeclarations[i]->ParseLexedAttributes();
1185 if (!AlreadyHasClassScope)
1186 Actions.ActOnFinishDelayedMemberDeclarations(getCurScope(),
1187 Class.TagOrTemplate);
1190 /// \brief Parse all attributes in LAs, and attach them to Decl D.
1191 void Parser::ParseLexedAttributeList(LateParsedAttrList &LAs, Decl *D,
1192 bool EnterScope, bool OnDefinition) {
1193 assert(LAs.parseSoon() &&
1194 "Attribute list should be marked for immediate parsing.");
1195 for (unsigned i = 0, ni = LAs.size(); i < ni; ++i) {
1198 ParseLexedAttribute(*LAs[i], EnterScope, OnDefinition);
1204 /// \brief Finish parsing an attribute for which parsing was delayed.
1205 /// This will be called at the end of parsing a class declaration
1206 /// for each LateParsedAttribute. We consume the saved tokens and
1207 /// create an attribute with the arguments filled in. We add this
1208 /// to the Attribute list for the decl.
1209 void Parser::ParseLexedAttribute(LateParsedAttribute &LA,
1210 bool EnterScope, bool OnDefinition) {
1211 // Create a fake EOF so that attribute parsing won't go off the end of the
1214 AttrEnd.startToken();
1215 AttrEnd.setKind(tok::eof);
1216 AttrEnd.setLocation(Tok.getLocation());
1217 AttrEnd.setEofData(LA.Toks.data());
1218 LA.Toks.push_back(AttrEnd);
1220 // Append the current token at the end of the new token stream so that it
1221 // doesn't get lost.
1222 LA.Toks.push_back(Tok);
1223 PP.EnterTokenStream(LA.Toks, true);
1224 // Consume the previously pushed token.
1225 ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
1227 ParsedAttributes Attrs(AttrFactory);
1228 SourceLocation endLoc;
1230 if (LA.Decls.size() > 0) {
1231 Decl *D = LA.Decls[0];
1232 NamedDecl *ND = dyn_cast<NamedDecl>(D);
1233 RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext());
1235 // Allow 'this' within late-parsed attributes.
1236 Sema::CXXThisScopeRAII ThisScope(Actions, RD, /*TypeQuals=*/0,
1237 ND && ND->isCXXInstanceMember());
1239 if (LA.Decls.size() == 1) {
1240 // If the Decl is templatized, add template parameters to scope.
1241 bool HasTemplateScope = EnterScope && D->isTemplateDecl();
1242 ParseScope TempScope(this, Scope::TemplateParamScope, HasTemplateScope);
1243 if (HasTemplateScope)
1244 Actions.ActOnReenterTemplateScope(Actions.CurScope, D);
1246 // If the Decl is on a function, add function parameters to the scope.
1247 bool HasFunScope = EnterScope && D->isFunctionOrFunctionTemplate();
1248 ParseScope FnScope(this, Scope::FnScope|Scope::DeclScope, HasFunScope);
1250 Actions.ActOnReenterFunctionContext(Actions.CurScope, D);
1252 ParseGNUAttributeArgs(&LA.AttrName, LA.AttrNameLoc, Attrs, &endLoc,
1253 nullptr, SourceLocation(), AttributeList::AS_GNU,
1257 Actions.ActOnExitFunctionContext();
1258 FnScope.Exit(); // Pop scope, and remove Decls from IdResolver
1260 if (HasTemplateScope) {
1264 // If there are multiple decls, then the decl cannot be within the
1266 ParseGNUAttributeArgs(&LA.AttrName, LA.AttrNameLoc, Attrs, &endLoc,
1267 nullptr, SourceLocation(), AttributeList::AS_GNU,
1271 Diag(Tok, diag::warn_attribute_no_decl) << LA.AttrName.getName();
1274 const AttributeList *AL = Attrs.getList();
1275 if (OnDefinition && AL && !AL->isCXX11Attribute() &&
1277 Diag(Tok, diag::warn_attribute_on_function_definition)
1280 for (unsigned i = 0, ni = LA.Decls.size(); i < ni; ++i)
1281 Actions.ActOnFinishDelayedAttribute(getCurScope(), LA.Decls[i], Attrs);
1283 // Due to a parsing error, we either went over the cached tokens or
1284 // there are still cached tokens left, so we skip the leftover tokens.
1285 while (Tok.isNot(tok::eof))
1288 if (Tok.is(tok::eof) && Tok.getEofData() == AttrEnd.getEofData())
1292 void Parser::ParseTypeTagForDatatypeAttribute(IdentifierInfo &AttrName,
1293 SourceLocation AttrNameLoc,
1294 ParsedAttributes &Attrs,
1295 SourceLocation *EndLoc,
1296 IdentifierInfo *ScopeName,
1297 SourceLocation ScopeLoc,
1298 AttributeList::Syntax Syntax) {
1299 assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
1301 BalancedDelimiterTracker T(*this, tok::l_paren);
1304 if (Tok.isNot(tok::identifier)) {
1305 Diag(Tok, diag::err_expected) << tok::identifier;
1309 IdentifierLoc *ArgumentKind = ParseIdentifierLoc();
1311 if (ExpectAndConsume(tok::comma)) {
1316 SourceRange MatchingCTypeRange;
1317 TypeResult MatchingCType = ParseTypeName(&MatchingCTypeRange);
1318 if (MatchingCType.isInvalid()) {
1323 bool LayoutCompatible = false;
1324 bool MustBeNull = false;
1325 while (TryConsumeToken(tok::comma)) {
1326 if (Tok.isNot(tok::identifier)) {
1327 Diag(Tok, diag::err_expected) << tok::identifier;
1331 IdentifierInfo *Flag = Tok.getIdentifierInfo();
1332 if (Flag->isStr("layout_compatible"))
1333 LayoutCompatible = true;
1334 else if (Flag->isStr("must_be_null"))
1337 Diag(Tok, diag::err_type_safety_unknown_flag) << Flag;
1341 ConsumeToken(); // consume flag
1344 if (!T.consumeClose()) {
1345 Attrs.addNewTypeTagForDatatype(&AttrName, AttrNameLoc, ScopeName, ScopeLoc,
1346 ArgumentKind, MatchingCType.get(),
1347 LayoutCompatible, MustBeNull, Syntax);
1351 *EndLoc = T.getCloseLocation();
1354 /// DiagnoseProhibitedCXX11Attribute - We have found the opening square brackets
1355 /// of a C++11 attribute-specifier in a location where an attribute is not
1356 /// permitted. By C++11 [dcl.attr.grammar]p6, this is ill-formed. Diagnose this
1359 /// \return \c true if we skipped an attribute-like chunk of tokens, \c false if
1360 /// this doesn't appear to actually be an attribute-specifier, and the caller
1361 /// should try to parse it.
1362 bool Parser::DiagnoseProhibitedCXX11Attribute() {
1363 assert(Tok.is(tok::l_square) && NextToken().is(tok::l_square));
1365 switch (isCXX11AttributeSpecifier(/*Disambiguate*/true)) {
1366 case CAK_NotAttributeSpecifier:
1367 // No diagnostic: we're in Obj-C++11 and this is not actually an attribute.
1370 case CAK_InvalidAttributeSpecifier:
1371 Diag(Tok.getLocation(), diag::err_l_square_l_square_not_attribute);
1374 case CAK_AttributeSpecifier:
1375 // Parse and discard the attributes.
1376 SourceLocation BeginLoc = ConsumeBracket();
1378 SkipUntil(tok::r_square);
1379 assert(Tok.is(tok::r_square) && "isCXX11AttributeSpecifier lied");
1380 SourceLocation EndLoc = ConsumeBracket();
1381 Diag(BeginLoc, diag::err_attributes_not_allowed)
1382 << SourceRange(BeginLoc, EndLoc);
1385 llvm_unreachable("All cases handled above.");
1388 /// \brief We have found the opening square brackets of a C++11
1389 /// attribute-specifier in a location where an attribute is not permitted, but
1390 /// we know where the attributes ought to be written. Parse them anyway, and
1391 /// provide a fixit moving them to the right place.
1392 void Parser::DiagnoseMisplacedCXX11Attribute(ParsedAttributesWithRange &Attrs,
1393 SourceLocation CorrectLocation) {
1394 assert((Tok.is(tok::l_square) && NextToken().is(tok::l_square)) ||
1395 Tok.is(tok::kw_alignas));
1397 // Consume the attributes.
1398 SourceLocation Loc = Tok.getLocation();
1399 ParseCXX11Attributes(Attrs);
1400 CharSourceRange AttrRange(SourceRange(Loc, Attrs.Range.getEnd()), true);
1402 Diag(Loc, diag::err_attributes_not_allowed)
1403 << FixItHint::CreateInsertionFromRange(CorrectLocation, AttrRange)
1404 << FixItHint::CreateRemoval(AttrRange);
1407 void Parser::DiagnoseProhibitedAttributes(ParsedAttributesWithRange &attrs) {
1408 Diag(attrs.Range.getBegin(), diag::err_attributes_not_allowed)
1412 void Parser::ProhibitCXX11Attributes(ParsedAttributesWithRange &Attrs,
1414 for (AttributeList *Attr = Attrs.getList(); Attr; Attr = Attr->getNext()) {
1415 if (!Attr->isCXX11Attribute())
1417 if (Attr->getKind() == AttributeList::UnknownAttribute)
1418 Diag(Attr->getLoc(), diag::warn_unknown_attribute_ignored)
1421 Diag(Attr->getLoc(), DiagID)
1428 // Usually, `__attribute__((attrib)) class Foo {} var` means that attribute
1429 // applies to var, not the type Foo.
1430 // As an exception to the rule, __declspec(align(...)) before the
1431 // class-key affects the type instead of the variable.
1432 // Also, Microsoft-style [attributes] seem to affect the type instead of the
1434 // This function moves attributes that should apply to the type off DS to Attrs.
1435 void Parser::stripTypeAttributesOffDeclSpec(ParsedAttributesWithRange &Attrs,
1437 Sema::TagUseKind TUK) {
1438 if (TUK == Sema::TUK_Reference)
1441 ParsedAttributes &PA = DS.getAttributes();
1442 AttributeList *AL = PA.getList();
1443 AttributeList *Prev = nullptr;
1444 AttributeList *TypeAttrHead = nullptr;
1445 AttributeList *TypeAttrTail = nullptr;
1447 AttributeList *Next = AL->getNext();
1449 if ((AL->getKind() == AttributeList::AT_Aligned &&
1450 AL->isDeclspecAttribute()) ||
1451 AL->isMicrosoftAttribute()) {
1452 // Stitch the attribute into the tag's attribute list.
1454 TypeAttrTail->setNext(AL);
1458 TypeAttrTail->setNext(nullptr);
1460 // Remove the attribute from the variable's attribute list.
1462 // Set the last variable attribute's next attribute to be the attribute
1463 // after the current one.
1464 Prev->setNext(Next);
1466 // Removing the head of the list requires us to reset the head to the
1477 // Find end of type attributes Attrs and add NewTypeAttributes in the same
1478 // order they were in originally. (Remember, in AttributeList things earlier
1479 // in source order are later in the list, since new attributes are added to
1480 // the front of the list.)
1481 Attrs.addAllAtEnd(TypeAttrHead);
1484 /// ParseDeclaration - Parse a full 'declaration', which consists of
1485 /// declaration-specifiers, some number of declarators, and a semicolon.
1486 /// 'Context' should be a Declarator::TheContext value. This returns the
1487 /// location of the semicolon in DeclEnd.
1489 /// declaration: [C99 6.7]
1490 /// block-declaration ->
1491 /// simple-declaration
1493 /// [C++] template-declaration
1494 /// [C++] namespace-definition
1495 /// [C++] using-directive
1496 /// [C++] using-declaration
1497 /// [C++11/C11] static_assert-declaration
1498 /// others... [FIXME]
1500 Parser::DeclGroupPtrTy Parser::ParseDeclaration(unsigned Context,
1501 SourceLocation &DeclEnd,
1502 ParsedAttributesWithRange &attrs) {
1503 ParenBraceBracketBalancer BalancerRAIIObj(*this);
1504 // Must temporarily exit the objective-c container scope for
1505 // parsing c none objective-c decls.
1506 ObjCDeclContextSwitch ObjCDC(*this);
1508 Decl *SingleDecl = nullptr;
1509 switch (Tok.getKind()) {
1510 case tok::kw_template:
1511 case tok::kw_export:
1512 ProhibitAttributes(attrs);
1513 SingleDecl = ParseDeclarationStartingWithTemplate(Context, DeclEnd);
1515 case tok::kw_inline:
1516 // Could be the start of an inline namespace. Allowed as an ext in C++03.
1517 if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_namespace)) {
1518 ProhibitAttributes(attrs);
1519 SourceLocation InlineLoc = ConsumeToken();
1520 return ParseNamespace(Context, DeclEnd, InlineLoc);
1522 return ParseSimpleDeclaration(Context, DeclEnd, attrs,
1524 case tok::kw_namespace:
1525 ProhibitAttributes(attrs);
1526 return ParseNamespace(Context, DeclEnd);
1528 return ParseUsingDirectiveOrDeclaration(Context, ParsedTemplateInfo(),
1530 case tok::kw_static_assert:
1531 case tok::kw__Static_assert:
1532 ProhibitAttributes(attrs);
1533 SingleDecl = ParseStaticAssertDeclaration(DeclEnd);
1536 return ParseSimpleDeclaration(Context, DeclEnd, attrs, true);
1539 // This routine returns a DeclGroup, if the thing we parsed only contains a
1540 // single decl, convert it now.
1541 return Actions.ConvertDeclToDeclGroup(SingleDecl);
1544 /// simple-declaration: [C99 6.7: declaration] [C++ 7p1: dcl.dcl]
1545 /// declaration-specifiers init-declarator-list[opt] ';'
1546 /// [C++11] attribute-specifier-seq decl-specifier-seq[opt]
1547 /// init-declarator-list ';'
1548 ///[C90/C++]init-declarator-list ';' [TODO]
1549 /// [OMP] threadprivate-directive [TODO]
1551 /// for-range-declaration: [C++11 6.5p1: stmt.ranged]
1552 /// attribute-specifier-seq[opt] type-specifier-seq declarator
1554 /// If RequireSemi is false, this does not check for a ';' at the end of the
1555 /// declaration. If it is true, it checks for and eats it.
1557 /// If FRI is non-null, we might be parsing a for-range-declaration instead
1558 /// of a simple-declaration. If we find that we are, we also parse the
1559 /// for-range-initializer, and place it here.
1560 Parser::DeclGroupPtrTy
1561 Parser::ParseSimpleDeclaration(unsigned Context,
1562 SourceLocation &DeclEnd,
1563 ParsedAttributesWithRange &Attrs,
1564 bool RequireSemi, ForRangeInit *FRI) {
1565 // Parse the common declaration-specifiers piece.
1566 ParsingDeclSpec DS(*this);
1568 DeclSpecContext DSContext = getDeclSpecContextFromDeclaratorContext(Context);
1569 ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS_none, DSContext);
1571 // If we had a free-standing type definition with a missing semicolon, we
1572 // may get this far before the problem becomes obvious.
1573 if (DS.hasTagDefinition() &&
1574 DiagnoseMissingSemiAfterTagDefinition(DS, AS_none, DSContext))
1577 // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };"
1578 // declaration-specifiers init-declarator-list[opt] ';'
1579 if (Tok.is(tok::semi)) {
1580 ProhibitAttributes(Attrs);
1581 DeclEnd = Tok.getLocation();
1582 if (RequireSemi) ConsumeToken();
1583 RecordDecl *AnonRecord = nullptr;
1584 Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
1586 DS.complete(TheDecl);
1588 Decl* decls[] = {AnonRecord, TheDecl};
1589 return Actions.BuildDeclaratorGroup(decls, /*TypeMayContainAuto=*/false);
1591 return Actions.ConvertDeclToDeclGroup(TheDecl);
1594 DS.takeAttributesFrom(Attrs);
1595 return ParseDeclGroup(DS, Context, &DeclEnd, FRI);
1598 /// Returns true if this might be the start of a declarator, or a common typo
1599 /// for a declarator.
1600 bool Parser::MightBeDeclarator(unsigned Context) {
1601 switch (Tok.getKind()) {
1602 case tok::annot_cxxscope:
1603 case tok::annot_template_id:
1605 case tok::code_completion:
1606 case tok::coloncolon:
1608 case tok::kw___attribute:
1609 case tok::kw_operator:
1616 return getLangOpts().CPlusPlus;
1618 case tok::l_square: // Might be an attribute on an unnamed bit-field.
1619 return Context == Declarator::MemberContext && getLangOpts().CPlusPlus11 &&
1620 NextToken().is(tok::l_square);
1622 case tok::colon: // Might be a typo for '::' or an unnamed bit-field.
1623 return Context == Declarator::MemberContext || getLangOpts().CPlusPlus;
1625 case tok::identifier:
1626 switch (NextToken().getKind()) {
1627 case tok::code_completion:
1628 case tok::coloncolon:
1631 case tok::equalequal: // Might be a typo for '='.
1632 case tok::kw_alignas:
1634 case tok::kw___attribute:
1646 // At namespace scope, 'identifier:' is probably a typo for 'identifier::'
1647 // and in block scope it's probably a label. Inside a class definition,
1648 // this is a bit-field.
1649 return Context == Declarator::MemberContext ||
1650 (getLangOpts().CPlusPlus && Context == Declarator::FileContext);
1652 case tok::identifier: // Possible virt-specifier.
1653 return getLangOpts().CPlusPlus11 && isCXX11VirtSpecifier(NextToken());
1664 /// Skip until we reach something which seems like a sensible place to pick
1665 /// up parsing after a malformed declaration. This will sometimes stop sooner
1666 /// than SkipUntil(tok::r_brace) would, but will never stop later.
1667 void Parser::SkipMalformedDecl() {
1669 switch (Tok.getKind()) {
1671 // Skip until matching }, then stop. We've probably skipped over
1672 // a malformed class or function definition or similar.
1674 SkipUntil(tok::r_brace);
1675 if (Tok.isOneOf(tok::comma, tok::l_brace, tok::kw_try)) {
1676 // This declaration isn't over yet. Keep skipping.
1679 TryConsumeToken(tok::semi);
1684 SkipUntil(tok::r_square);
1689 SkipUntil(tok::r_paren);
1699 case tok::kw_inline:
1700 // 'inline namespace' at the start of a line is almost certainly
1701 // a good place to pick back up parsing, except in an Objective-C
1702 // @interface context.
1703 if (Tok.isAtStartOfLine() && NextToken().is(tok::kw_namespace) &&
1704 (!ParsingInObjCContainer || CurParsedObjCImpl))
1708 case tok::kw_namespace:
1709 // 'namespace' at the start of a line is almost certainly a good
1710 // place to pick back up parsing, except in an Objective-C
1711 // @interface context.
1712 if (Tok.isAtStartOfLine() &&
1713 (!ParsingInObjCContainer || CurParsedObjCImpl))
1718 // @end is very much like } in Objective-C contexts.
1719 if (NextToken().isObjCAtKeyword(tok::objc_end) &&
1720 ParsingInObjCContainer)
1726 // - and + probably start new method declarations in Objective-C contexts.
1727 if (Tok.isAtStartOfLine() && ParsingInObjCContainer)
1732 case tok::annot_module_begin:
1733 case tok::annot_module_end:
1734 case tok::annot_module_include:
1745 /// ParseDeclGroup - Having concluded that this is either a function
1746 /// definition or a group of object declarations, actually parse the
1748 Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS,
1750 SourceLocation *DeclEnd,
1751 ForRangeInit *FRI) {
1752 // Parse the first declarator.
1753 ParsingDeclarator D(*this, DS, static_cast<Declarator::TheContext>(Context));
1756 // Bail out if the first declarator didn't seem well-formed.
1757 if (!D.hasName() && !D.mayOmitIdentifier()) {
1758 SkipMalformedDecl();
1762 // Save late-parsed attributes for now; they need to be parsed in the
1763 // appropriate function scope after the function Decl has been constructed.
1764 // These will be parsed in ParseFunctionDefinition or ParseLexedAttrList.
1765 LateParsedAttrList LateParsedAttrs(true);
1766 if (D.isFunctionDeclarator()) {
1767 MaybeParseGNUAttributes(D, &LateParsedAttrs);
1769 // The _Noreturn keyword can't appear here, unlike the GNU noreturn
1770 // attribute. If we find the keyword here, tell the user to put it
1771 // at the start instead.
1772 if (Tok.is(tok::kw__Noreturn)) {
1773 SourceLocation Loc = ConsumeToken();
1774 const char *PrevSpec;
1777 // We can offer a fixit if it's valid to mark this function as _Noreturn
1778 // and we don't have any other declarators in this declaration.
1779 bool Fixit = !DS.setFunctionSpecNoreturn(Loc, PrevSpec, DiagID);
1780 MaybeParseGNUAttributes(D, &LateParsedAttrs);
1781 Fixit &= Tok.isOneOf(tok::semi, tok::l_brace, tok::kw_try);
1783 Diag(Loc, diag::err_c11_noreturn_misplaced)
1784 << (Fixit ? FixItHint::CreateRemoval(Loc) : FixItHint())
1785 << (Fixit ? FixItHint::CreateInsertion(D.getLocStart(), "_Noreturn ")
1790 // Check to see if we have a function *definition* which must have a body.
1791 if (D.isFunctionDeclarator() &&
1792 // Look at the next token to make sure that this isn't a function
1793 // declaration. We have to check this because __attribute__ might be the
1794 // start of a function definition in GCC-extended K&R C.
1795 !isDeclarationAfterDeclarator()) {
1797 // Function definitions are only allowed at file scope and in C++ classes.
1798 // The C++ inline method definition case is handled elsewhere, so we only
1799 // need to handle the file scope definition case.
1800 if (Context == Declarator::FileContext) {
1801 if (isStartOfFunctionDefinition(D)) {
1802 if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
1803 Diag(Tok, diag::err_function_declared_typedef);
1805 // Recover by treating the 'typedef' as spurious.
1806 DS.ClearStorageClassSpecs();
1810 ParseFunctionDefinition(D, ParsedTemplateInfo(), &LateParsedAttrs);
1811 return Actions.ConvertDeclToDeclGroup(TheDecl);
1814 if (isDeclarationSpecifier()) {
1815 // If there is an invalid declaration specifier right after the
1816 // function prototype, then we must be in a missing semicolon case
1817 // where this isn't actually a body. Just fall through into the code
1818 // that handles it as a prototype, and let the top-level code handle
1819 // the erroneous declspec where it would otherwise expect a comma or
1822 Diag(Tok, diag::err_expected_fn_body);
1823 SkipUntil(tok::semi);
1827 if (Tok.is(tok::l_brace)) {
1828 Diag(Tok, diag::err_function_definition_not_allowed);
1829 SkipMalformedDecl();
1835 if (ParseAsmAttributesAfterDeclarator(D))
1838 // C++0x [stmt.iter]p1: Check if we have a for-range-declarator. If so, we
1839 // must parse and analyze the for-range-initializer before the declaration is
1842 // Handle the Objective-C for-in loop variable similarly, although we
1843 // don't need to parse the container in advance.
1844 if (FRI && (Tok.is(tok::colon) || isTokIdentifier_in())) {
1845 bool IsForRangeLoop = false;
1846 if (TryConsumeToken(tok::colon, FRI->ColonLoc)) {
1847 IsForRangeLoop = true;
1848 if (Tok.is(tok::l_brace))
1849 FRI->RangeExpr = ParseBraceInitializer();
1851 FRI->RangeExpr = ParseExpression();
1854 Decl *ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
1856 Actions.ActOnCXXForRangeDecl(ThisDecl);
1857 Actions.FinalizeDeclaration(ThisDecl);
1858 D.complete(ThisDecl);
1859 return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, ThisDecl);
1862 SmallVector<Decl *, 8> DeclsInGroup;
1863 Decl *FirstDecl = ParseDeclarationAfterDeclaratorAndAttributes(
1864 D, ParsedTemplateInfo(), FRI);
1865 if (LateParsedAttrs.size() > 0)
1866 ParseLexedAttributeList(LateParsedAttrs, FirstDecl, true, false);
1867 D.complete(FirstDecl);
1869 DeclsInGroup.push_back(FirstDecl);
1871 bool ExpectSemi = Context != Declarator::ForContext;
1873 // If we don't have a comma, it is either the end of the list (a ';') or an
1875 SourceLocation CommaLoc;
1876 while (TryConsumeToken(tok::comma, CommaLoc)) {
1877 if (Tok.isAtStartOfLine() && ExpectSemi && !MightBeDeclarator(Context)) {
1878 // This comma was followed by a line-break and something which can't be
1879 // the start of a declarator. The comma was probably a typo for a
1881 Diag(CommaLoc, diag::err_expected_semi_declaration)
1882 << FixItHint::CreateReplacement(CommaLoc, ";");
1887 // Parse the next declarator.
1889 D.setCommaLoc(CommaLoc);
1891 // Accept attributes in an init-declarator. In the first declarator in a
1892 // declaration, these would be part of the declspec. In subsequent
1893 // declarators, they become part of the declarator itself, so that they
1894 // don't apply to declarators after *this* one. Examples:
1895 // short __attribute__((common)) var; -> declspec
1896 // short var __attribute__((common)); -> declarator
1897 // short x, __attribute__((common)) var; -> declarator
1898 MaybeParseGNUAttributes(D);
1900 // MSVC parses but ignores qualifiers after the comma as an extension.
1901 if (getLangOpts().MicrosoftExt)
1902 DiagnoseAndSkipExtendedMicrosoftTypeAttributes();
1905 if (!D.isInvalidType()) {
1906 Decl *ThisDecl = ParseDeclarationAfterDeclarator(D);
1907 D.complete(ThisDecl);
1909 DeclsInGroup.push_back(ThisDecl);
1914 *DeclEnd = Tok.getLocation();
1917 ExpectAndConsumeSemi(Context == Declarator::FileContext
1918 ? diag::err_invalid_token_after_toplevel_declarator
1919 : diag::err_expected_semi_declaration)) {
1920 // Okay, there was no semicolon and one was expected. If we see a
1921 // declaration specifier, just assume it was missing and continue parsing.
1922 // Otherwise things are very confused and we skip to recover.
1923 if (!isDeclarationSpecifier()) {
1924 SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
1925 TryConsumeToken(tok::semi);
1929 return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, DeclsInGroup);
1932 /// Parse an optional simple-asm-expr and attributes, and attach them to a
1933 /// declarator. Returns true on an error.
1934 bool Parser::ParseAsmAttributesAfterDeclarator(Declarator &D) {
1935 // If a simple-asm-expr is present, parse it.
1936 if (Tok.is(tok::kw_asm)) {
1938 ExprResult AsmLabel(ParseSimpleAsm(&Loc));
1939 if (AsmLabel.isInvalid()) {
1940 SkipUntil(tok::semi, StopBeforeMatch);
1944 D.setAsmLabel(AsmLabel.get());
1948 MaybeParseGNUAttributes(D);
1952 /// \brief Parse 'declaration' after parsing 'declaration-specifiers
1953 /// declarator'. This method parses the remainder of the declaration
1954 /// (including any attributes or initializer, among other things) and
1955 /// finalizes the declaration.
1957 /// init-declarator: [C99 6.7]
1959 /// declarator '=' initializer
1960 /// [GNU] declarator simple-asm-expr[opt] attributes[opt]
1961 /// [GNU] declarator simple-asm-expr[opt] attributes[opt] '=' initializer
1962 /// [C++] declarator initializer[opt]
1964 /// [C++] initializer:
1965 /// [C++] '=' initializer-clause
1966 /// [C++] '(' expression-list ')'
1967 /// [C++0x] '=' 'default' [TODO]
1968 /// [C++0x] '=' 'delete'
1969 /// [C++0x] braced-init-list
1971 /// According to the standard grammar, =default and =delete are function
1972 /// definitions, but that definitely doesn't fit with the parser here.
1974 Decl *Parser::ParseDeclarationAfterDeclarator(
1975 Declarator &D, const ParsedTemplateInfo &TemplateInfo) {
1976 if (ParseAsmAttributesAfterDeclarator(D))
1979 return ParseDeclarationAfterDeclaratorAndAttributes(D, TemplateInfo);
1982 Decl *Parser::ParseDeclarationAfterDeclaratorAndAttributes(
1983 Declarator &D, const ParsedTemplateInfo &TemplateInfo, ForRangeInit *FRI) {
1984 // Inform the current actions module that we just parsed this declarator.
1985 Decl *ThisDecl = nullptr;
1986 switch (TemplateInfo.Kind) {
1987 case ParsedTemplateInfo::NonTemplate:
1988 ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
1991 case ParsedTemplateInfo::Template:
1992 case ParsedTemplateInfo::ExplicitSpecialization: {
1993 ThisDecl = Actions.ActOnTemplateDeclarator(getCurScope(),
1994 *TemplateInfo.TemplateParams,
1996 if (VarTemplateDecl *VT = dyn_cast_or_null<VarTemplateDecl>(ThisDecl))
1997 // Re-direct this decl to refer to the templated decl so that we can
1999 ThisDecl = VT->getTemplatedDecl();
2002 case ParsedTemplateInfo::ExplicitInstantiation: {
2003 if (Tok.is(tok::semi)) {
2004 DeclResult ThisRes = Actions.ActOnExplicitInstantiation(
2005 getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc, D);
2006 if (ThisRes.isInvalid()) {
2007 SkipUntil(tok::semi, StopBeforeMatch);
2010 ThisDecl = ThisRes.get();
2012 // FIXME: This check should be for a variable template instantiation only.
2014 // Check that this is a valid instantiation
2015 if (D.getName().getKind() != UnqualifiedId::IK_TemplateId) {
2016 // If the declarator-id is not a template-id, issue a diagnostic and
2017 // recover by ignoring the 'template' keyword.
2018 Diag(Tok, diag::err_template_defn_explicit_instantiation)
2019 << 2 << FixItHint::CreateRemoval(TemplateInfo.TemplateLoc);
2020 ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
2022 SourceLocation LAngleLoc =
2023 PP.getLocForEndOfToken(TemplateInfo.TemplateLoc);
2024 Diag(D.getIdentifierLoc(),
2025 diag::err_explicit_instantiation_with_definition)
2026 << SourceRange(TemplateInfo.TemplateLoc)
2027 << FixItHint::CreateInsertion(LAngleLoc, "<>");
2029 // Recover as if it were an explicit specialization.
2030 TemplateParameterLists FakedParamLists;
2031 FakedParamLists.push_back(Actions.ActOnTemplateParameterList(
2032 0, SourceLocation(), TemplateInfo.TemplateLoc, LAngleLoc, None,
2033 LAngleLoc, nullptr));
2036 Actions.ActOnTemplateDeclarator(getCurScope(), FakedParamLists, D);
2043 bool TypeContainsAuto = D.getDeclSpec().containsPlaceholderType();
2045 // Parse declarator '=' initializer.
2046 // If a '==' or '+=' is found, suggest a fixit to '='.
2047 if (isTokenEqualOrEqualTypo()) {
2048 SourceLocation EqualLoc = ConsumeToken();
2050 if (Tok.is(tok::kw_delete)) {
2051 if (D.isFunctionDeclarator())
2052 Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
2055 Diag(ConsumeToken(), diag::err_deleted_non_function);
2056 } else if (Tok.is(tok::kw_default)) {
2057 if (D.isFunctionDeclarator())
2058 Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
2061 Diag(ConsumeToken(), diag::err_default_special_members);
2063 if (getLangOpts().CPlusPlus && D.getCXXScopeSpec().isSet()) {
2065 Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl);
2068 if (Tok.is(tok::code_completion)) {
2069 Actions.CodeCompleteInitializer(getCurScope(), ThisDecl);
2070 Actions.FinalizeDeclaration(ThisDecl);
2075 ExprResult Init(ParseInitializer());
2077 // If this is the only decl in (possibly) range based for statement,
2078 // our best guess is that the user meant ':' instead of '='.
2079 if (Tok.is(tok::r_paren) && FRI && D.isFirstDeclarator()) {
2080 Diag(EqualLoc, diag::err_single_decl_assign_in_for_range)
2081 << FixItHint::CreateReplacement(EqualLoc, ":");
2082 // We are trying to stop parser from looking for ';' in this for
2083 // statement, therefore preventing spurious errors to be issued.
2084 FRI->ColonLoc = EqualLoc;
2086 FRI->RangeExpr = Init;
2089 if (getLangOpts().CPlusPlus && D.getCXXScopeSpec().isSet()) {
2090 Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
2094 if (Init.isInvalid()) {
2095 SmallVector<tok::TokenKind, 2> StopTokens;
2096 StopTokens.push_back(tok::comma);
2097 if (D.getContext() == Declarator::ForContext ||
2098 D.getContext() == Declarator::InitStmtContext)
2099 StopTokens.push_back(tok::r_paren);
2100 SkipUntil(StopTokens, StopAtSemi | StopBeforeMatch);
2101 Actions.ActOnInitializerError(ThisDecl);
2103 Actions.AddInitializerToDecl(ThisDecl, Init.get(),
2104 /*DirectInit=*/false, TypeContainsAuto);
2106 } else if (Tok.is(tok::l_paren)) {
2107 // Parse C++ direct initializer: '(' expression-list ')'
2108 BalancedDelimiterTracker T(*this, tok::l_paren);
2112 CommaLocsTy CommaLocs;
2114 if (getLangOpts().CPlusPlus && D.getCXXScopeSpec().isSet()) {
2116 Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl);
2119 if (ParseExpressionList(Exprs, CommaLocs, [&] {
2120 Actions.CodeCompleteConstructor(getCurScope(),
2121 cast<VarDecl>(ThisDecl)->getType()->getCanonicalTypeInternal(),
2122 ThisDecl->getLocation(), Exprs);
2124 Actions.ActOnInitializerError(ThisDecl);
2125 SkipUntil(tok::r_paren, StopAtSemi);
2127 if (getLangOpts().CPlusPlus && D.getCXXScopeSpec().isSet()) {
2128 Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
2135 assert(!Exprs.empty() && Exprs.size()-1 == CommaLocs.size() &&
2136 "Unexpected number of commas!");
2138 if (getLangOpts().CPlusPlus && D.getCXXScopeSpec().isSet()) {
2139 Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
2143 ExprResult Initializer = Actions.ActOnParenListExpr(T.getOpenLocation(),
2144 T.getCloseLocation(),
2146 Actions.AddInitializerToDecl(ThisDecl, Initializer.get(),
2147 /*DirectInit=*/true, TypeContainsAuto);
2149 } else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace) &&
2150 (!CurParsedObjCImpl || !D.isFunctionDeclarator())) {
2151 // Parse C++0x braced-init-list.
2152 Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
2154 if (D.getCXXScopeSpec().isSet()) {
2156 Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl);
2159 ExprResult Init(ParseBraceInitializer());
2161 if (D.getCXXScopeSpec().isSet()) {
2162 Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
2166 if (Init.isInvalid()) {
2167 Actions.ActOnInitializerError(ThisDecl);
2169 Actions.AddInitializerToDecl(ThisDecl, Init.get(),
2170 /*DirectInit=*/true, TypeContainsAuto);
2173 Actions.ActOnUninitializedDecl(ThisDecl, TypeContainsAuto);
2176 Actions.FinalizeDeclaration(ThisDecl);
2181 /// ParseSpecifierQualifierList
2182 /// specifier-qualifier-list:
2183 /// type-specifier specifier-qualifier-list[opt]
2184 /// type-qualifier specifier-qualifier-list[opt]
2185 /// [GNU] attributes specifier-qualifier-list[opt]
2187 void Parser::ParseSpecifierQualifierList(DeclSpec &DS, AccessSpecifier AS,
2188 DeclSpecContext DSC) {
2189 /// specifier-qualifier-list is a subset of declaration-specifiers. Just
2190 /// parse declaration-specifiers and complain about extra stuff.
2191 /// TODO: diagnose attribute-specifiers and alignment-specifiers.
2192 ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC);
2194 // Validate declspec for type-name.
2195 unsigned Specs = DS.getParsedSpecifiers();
2196 if (isTypeSpecifier(DSC) && !DS.hasTypeSpecifier()) {
2197 Diag(Tok, diag::err_expected_type);
2198 DS.SetTypeSpecError();
2199 } else if (Specs == DeclSpec::PQ_None && !DS.hasAttributes()) {
2200 Diag(Tok, diag::err_typename_requires_specqual);
2201 if (!DS.hasTypeSpecifier())
2202 DS.SetTypeSpecError();
2205 // Issue diagnostic and remove storage class if present.
2206 if (Specs & DeclSpec::PQ_StorageClassSpecifier) {
2207 if (DS.getStorageClassSpecLoc().isValid())
2208 Diag(DS.getStorageClassSpecLoc(),diag::err_typename_invalid_storageclass);
2210 Diag(DS.getThreadStorageClassSpecLoc(),
2211 diag::err_typename_invalid_storageclass);
2212 DS.ClearStorageClassSpecs();
2215 // Issue diagnostic and remove function specifier if present.
2216 if (Specs & DeclSpec::PQ_FunctionSpecifier) {
2217 if (DS.isInlineSpecified())
2218 Diag(DS.getInlineSpecLoc(), diag::err_typename_invalid_functionspec);
2219 if (DS.isVirtualSpecified())
2220 Diag(DS.getVirtualSpecLoc(), diag::err_typename_invalid_functionspec);
2221 if (DS.isExplicitSpecified())
2222 Diag(DS.getExplicitSpecLoc(), diag::err_typename_invalid_functionspec);
2223 DS.ClearFunctionSpecs();
2226 // Issue diagnostic and remove constexpr specfier if present.
2227 if (DS.isConstexprSpecified() && DSC != DSC_condition) {
2228 Diag(DS.getConstexprSpecLoc(), diag::err_typename_invalid_constexpr);
2229 DS.ClearConstexprSpec();
2233 /// isValidAfterIdentifierInDeclaratorAfterDeclSpec - Return true if the
2234 /// specified token is valid after the identifier in a declarator which
2235 /// immediately follows the declspec. For example, these things are valid:
2237 /// int x [ 4]; // direct-declarator
2238 /// int x ( int y); // direct-declarator
2239 /// int(int x ) // direct-declarator
2240 /// int x ; // simple-declaration
2241 /// int x = 17; // init-declarator-list
2242 /// int x , y; // init-declarator-list
2243 /// int x __asm__ ("foo"); // init-declarator-list
2244 /// int x : 4; // struct-declarator
2245 /// int x { 5}; // C++'0x unified initializers
2247 /// This is not, because 'x' does not immediately follow the declspec (though
2248 /// ')' happens to be valid anyway).
2251 static bool isValidAfterIdentifierInDeclarator(const Token &T) {
2252 return T.isOneOf(tok::l_square, tok::l_paren, tok::r_paren, tok::semi,
2253 tok::comma, tok::equal, tok::kw_asm, tok::l_brace,
2257 /// ParseImplicitInt - This method is called when we have an non-typename
2258 /// identifier in a declspec (which normally terminates the decl spec) when
2259 /// the declspec has no type specifier. In this case, the declspec is either
2260 /// malformed or is "implicit int" (in K&R and C89).
2262 /// This method handles diagnosing this prettily and returns false if the
2263 /// declspec is done being processed. If it recovers and thinks there may be
2264 /// other pieces of declspec after it, it returns true.
2266 bool Parser::ParseImplicitInt(DeclSpec &DS, CXXScopeSpec *SS,
2267 const ParsedTemplateInfo &TemplateInfo,
2268 AccessSpecifier AS, DeclSpecContext DSC,
2269 ParsedAttributesWithRange &Attrs) {
2270 assert(Tok.is(tok::identifier) && "should have identifier");
2272 SourceLocation Loc = Tok.getLocation();
2273 // If we see an identifier that is not a type name, we normally would
2274 // parse it as the identifer being declared. However, when a typename
2275 // is typo'd or the definition is not included, this will incorrectly
2276 // parse the typename as the identifier name and fall over misparsing
2277 // later parts of the diagnostic.
2279 // As such, we try to do some look-ahead in cases where this would
2280 // otherwise be an "implicit-int" case to see if this is invalid. For
2281 // example: "static foo_t x = 4;" In this case, if we parsed foo_t as
2282 // an identifier with implicit int, we'd get a parse error because the
2283 // next token is obviously invalid for a type. Parse these as a case
2284 // with an invalid type specifier.
2285 assert(!DS.hasTypeSpecifier() && "Type specifier checked above");
2287 // Since we know that this either implicit int (which is rare) or an
2288 // error, do lookahead to try to do better recovery. This never applies
2289 // within a type specifier. Outside of C++, we allow this even if the
2290 // language doesn't "officially" support implicit int -- we support
2291 // implicit int as an extension in C99 and C11.
2292 if (!isTypeSpecifier(DSC) && !getLangOpts().CPlusPlus &&
2293 isValidAfterIdentifierInDeclarator(NextToken())) {
2294 // If this token is valid for implicit int, e.g. "static x = 4", then
2295 // we just avoid eating the identifier, so it will be parsed as the
2296 // identifier in the declarator.
2300 if (getLangOpts().CPlusPlus &&
2301 DS.getStorageClassSpec() == DeclSpec::SCS_auto) {
2302 // Don't require a type specifier if we have the 'auto' storage class
2303 // specifier in C++98 -- we'll promote it to a type specifier.
2305 AnnotateScopeToken(*SS, /*IsNewAnnotation*/false);
2309 if (getLangOpts().CPlusPlus && (!SS || SS->isEmpty()) &&
2310 getLangOpts().MSVCCompat) {
2311 // Lookup of an unqualified type name has failed in MSVC compatibility mode.
2312 // Give Sema a chance to recover if we are in a template with dependent base
2314 if (ParsedType T = Actions.ActOnMSVCUnknownTypeName(
2315 *Tok.getIdentifierInfo(), Tok.getLocation(),
2316 DSC == DSC_template_type_arg)) {
2317 const char *PrevSpec;
2319 DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, DiagID, T,
2320 Actions.getASTContext().getPrintingPolicy());
2321 DS.SetRangeEnd(Tok.getLocation());
2327 // Otherwise, if we don't consume this token, we are going to emit an
2328 // error anyway. Try to recover from various common problems. Check
2329 // to see if this was a reference to a tag name without a tag specified.
2330 // This is a common problem in C (saying 'foo' instead of 'struct foo').
2332 // C++ doesn't need this, and isTagName doesn't take SS.
2333 if (SS == nullptr) {
2334 const char *TagName = nullptr, *FixitTagName = nullptr;
2335 tok::TokenKind TagKind = tok::unknown;
2337 switch (Actions.isTagName(*Tok.getIdentifierInfo(), getCurScope())) {
2339 case DeclSpec::TST_enum:
2340 TagName="enum" ; FixitTagName = "enum " ; TagKind=tok::kw_enum ;break;
2341 case DeclSpec::TST_union:
2342 TagName="union" ; FixitTagName = "union " ;TagKind=tok::kw_union ;break;
2343 case DeclSpec::TST_struct:
2344 TagName="struct"; FixitTagName = "struct ";TagKind=tok::kw_struct;break;
2345 case DeclSpec::TST_interface:
2346 TagName="__interface"; FixitTagName = "__interface ";
2347 TagKind=tok::kw___interface;break;
2348 case DeclSpec::TST_class:
2349 TagName="class" ; FixitTagName = "class " ;TagKind=tok::kw_class ;break;
2353 IdentifierInfo *TokenName = Tok.getIdentifierInfo();
2354 LookupResult R(Actions, TokenName, SourceLocation(),
2355 Sema::LookupOrdinaryName);
2357 Diag(Loc, diag::err_use_of_tag_name_without_tag)
2358 << TokenName << TagName << getLangOpts().CPlusPlus
2359 << FixItHint::CreateInsertion(Tok.getLocation(), FixitTagName);
2361 if (Actions.LookupParsedName(R, getCurScope(), SS)) {
2362 for (LookupResult::iterator I = R.begin(), IEnd = R.end();
2364 Diag((*I)->getLocation(), diag::note_decl_hiding_tag_type)
2365 << TokenName << TagName;
2368 // Parse this as a tag as if the missing tag were present.
2369 if (TagKind == tok::kw_enum)
2370 ParseEnumSpecifier(Loc, DS, TemplateInfo, AS, DSC_normal);
2372 ParseClassSpecifier(TagKind, Loc, DS, TemplateInfo, AS,
2373 /*EnteringContext*/ false, DSC_normal, Attrs);
2378 // Determine whether this identifier could plausibly be the name of something
2379 // being declared (with a missing type).
2380 if (!isTypeSpecifier(DSC) &&
2381 (!SS || DSC == DSC_top_level || DSC == DSC_class)) {
2382 // Look ahead to the next token to try to figure out what this declaration
2383 // was supposed to be.
2384 switch (NextToken().getKind()) {
2385 case tok::l_paren: {
2386 // static x(4); // 'x' is not a type
2387 // x(int n); // 'x' is not a type
2388 // x (*p)[]; // 'x' is a type
2390 // Since we're in an error case, we can afford to perform a tentative
2391 // parse to determine which case we're in.
2392 TentativeParsingAction PA(*this);
2394 TPResult TPR = TryParseDeclarator(/*mayBeAbstract*/false);
2397 if (TPR != TPResult::False) {
2398 // The identifier is followed by a parenthesized declarator.
2399 // It's supposed to be a type.
2403 // If we're in a context where we could be declaring a constructor,
2404 // check whether this is a constructor declaration with a bogus name.
2405 if (DSC == DSC_class || (DSC == DSC_top_level && SS)) {
2406 IdentifierInfo *II = Tok.getIdentifierInfo();
2407 if (Actions.isCurrentClassNameTypo(II, SS)) {
2408 Diag(Loc, diag::err_constructor_bad_name)
2409 << Tok.getIdentifierInfo() << II
2410 << FixItHint::CreateReplacement(Tok.getLocation(), II->getName());
2411 Tok.setIdentifierInfo(II);
2422 // This looks like a variable or function declaration. The type is
2423 // probably missing. We're done parsing decl-specifiers.
2425 AnnotateScopeToken(*SS, /*IsNewAnnotation*/false);
2429 // This is probably supposed to be a type. This includes cases like:
2431 // struct S { unsinged : 4; };
2436 // This is almost certainly an invalid type name. Let Sema emit a diagnostic
2437 // and attempt to recover.
2439 IdentifierInfo *II = Tok.getIdentifierInfo();
2440 Actions.DiagnoseUnknownTypeName(II, Loc, getCurScope(), SS, T,
2441 getLangOpts().CPlusPlus &&
2442 NextToken().is(tok::less));
2444 // The action has suggested that the type T could be used. Set that as
2445 // the type in the declaration specifiers, consume the would-be type
2446 // name token, and we're done.
2447 const char *PrevSpec;
2449 DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, DiagID, T,
2450 Actions.getASTContext().getPrintingPolicy());
2451 DS.SetRangeEnd(Tok.getLocation());
2453 // There may be other declaration specifiers after this.
2455 } else if (II != Tok.getIdentifierInfo()) {
2456 // If no type was suggested, the correction is to a keyword
2457 Tok.setKind(II->getTokenID());
2458 // There may be other declaration specifiers after this.
2462 // Otherwise, the action had no suggestion for us. Mark this as an error.
2463 DS.SetTypeSpecError();
2464 DS.SetRangeEnd(Tok.getLocation());
2467 // TODO: Could inject an invalid typedef decl in an enclosing scope to
2468 // avoid rippling error messages on subsequent uses of the same type,
2469 // could be useful if #include was forgotten.
2473 /// \brief Determine the declaration specifier context from the declarator
2476 /// \param Context the declarator context, which is one of the
2477 /// Declarator::TheContext enumerator values.
2478 Parser::DeclSpecContext
2479 Parser::getDeclSpecContextFromDeclaratorContext(unsigned Context) {
2480 if (Context == Declarator::MemberContext)
2482 if (Context == Declarator::FileContext)
2483 return DSC_top_level;
2484 if (Context == Declarator::TemplateTypeArgContext)
2485 return DSC_template_type_arg;
2486 if (Context == Declarator::TrailingReturnContext)
2487 return DSC_trailing;
2488 if (Context == Declarator::AliasDeclContext ||
2489 Context == Declarator::AliasTemplateContext)
2490 return DSC_alias_declaration;
2494 /// ParseAlignArgument - Parse the argument to an alignment-specifier.
2496 /// FIXME: Simply returns an alignof() expression if the argument is a
2497 /// type. Ideally, the type should be propagated directly into Sema.
2500 /// [C11] constant-expression
2501 /// [C++0x] type-id ...[opt]
2502 /// [C++0x] assignment-expression ...[opt]
2503 ExprResult Parser::ParseAlignArgument(SourceLocation Start,
2504 SourceLocation &EllipsisLoc) {
2506 if (isTypeIdInParens()) {
2507 SourceLocation TypeLoc = Tok.getLocation();
2508 ParsedType Ty = ParseTypeName().get();
2509 SourceRange TypeRange(Start, Tok.getLocation());
2510 ER = Actions.ActOnUnaryExprOrTypeTraitExpr(TypeLoc, UETT_AlignOf, true,
2511 Ty.getAsOpaquePtr(), TypeRange);
2513 ER = ParseConstantExpression();
2515 if (getLangOpts().CPlusPlus11)
2516 TryConsumeToken(tok::ellipsis, EllipsisLoc);
2521 /// ParseAlignmentSpecifier - Parse an alignment-specifier, and add the
2522 /// attribute to Attrs.
2524 /// alignment-specifier:
2525 /// [C11] '_Alignas' '(' type-id ')'
2526 /// [C11] '_Alignas' '(' constant-expression ')'
2527 /// [C++11] 'alignas' '(' type-id ...[opt] ')'
2528 /// [C++11] 'alignas' '(' assignment-expression ...[opt] ')'
2529 void Parser::ParseAlignmentSpecifier(ParsedAttributes &Attrs,
2530 SourceLocation *EndLoc) {
2531 assert(Tok.isOneOf(tok::kw_alignas, tok::kw__Alignas) &&
2532 "Not an alignment-specifier!");
2534 IdentifierInfo *KWName = Tok.getIdentifierInfo();
2535 SourceLocation KWLoc = ConsumeToken();
2537 BalancedDelimiterTracker T(*this, tok::l_paren);
2538 if (T.expectAndConsume())
2541 SourceLocation EllipsisLoc;
2542 ExprResult ArgExpr = ParseAlignArgument(T.getOpenLocation(), EllipsisLoc);
2543 if (ArgExpr.isInvalid()) {
2550 *EndLoc = T.getCloseLocation();
2552 ArgsVector ArgExprs;
2553 ArgExprs.push_back(ArgExpr.get());
2554 Attrs.addNew(KWName, KWLoc, nullptr, KWLoc, ArgExprs.data(), 1,
2555 AttributeList::AS_Keyword, EllipsisLoc);
2558 /// Determine whether we're looking at something that might be a declarator
2559 /// in a simple-declaration. If it can't possibly be a declarator, maybe
2560 /// diagnose a missing semicolon after a prior tag definition in the decl
2563 /// \return \c true if an error occurred and this can't be any kind of
2566 Parser::DiagnoseMissingSemiAfterTagDefinition(DeclSpec &DS, AccessSpecifier AS,
2567 DeclSpecContext DSContext,
2568 LateParsedAttrList *LateAttrs) {
2569 assert(DS.hasTagDefinition() && "shouldn't call this");
2571 bool EnteringContext = (DSContext == DSC_class || DSContext == DSC_top_level);
2573 if (getLangOpts().CPlusPlus &&
2574 Tok.isOneOf(tok::identifier, tok::coloncolon, tok::kw_decltype,
2575 tok::annot_template_id) &&
2576 TryAnnotateCXXScopeToken(EnteringContext)) {
2577 SkipMalformedDecl();
2581 bool HasScope = Tok.is(tok::annot_cxxscope);
2582 // Make a copy in case GetLookAheadToken invalidates the result of NextToken.
2583 Token AfterScope = HasScope ? NextToken() : Tok;
2585 // Determine whether the following tokens could possibly be a
2587 bool MightBeDeclarator = true;
2588 if (Tok.isOneOf(tok::kw_typename, tok::annot_typename)) {
2589 // A declarator-id can't start with 'typename'.
2590 MightBeDeclarator = false;
2591 } else if (AfterScope.is(tok::annot_template_id)) {
2592 // If we have a type expressed as a template-id, this cannot be a
2593 // declarator-id (such a type cannot be redeclared in a simple-declaration).
2594 TemplateIdAnnotation *Annot =
2595 static_cast<TemplateIdAnnotation *>(AfterScope.getAnnotationValue());
2596 if (Annot->Kind == TNK_Type_template)
2597 MightBeDeclarator = false;
2598 } else if (AfterScope.is(tok::identifier)) {
2599 const Token &Next = HasScope ? GetLookAheadToken(2) : NextToken();
2601 // These tokens cannot come after the declarator-id in a
2602 // simple-declaration, and are likely to come after a type-specifier.
2603 if (Next.isOneOf(tok::star, tok::amp, tok::ampamp, tok::identifier,
2604 tok::annot_cxxscope, tok::coloncolon)) {
2605 // Missing a semicolon.
2606 MightBeDeclarator = false;
2607 } else if (HasScope) {
2608 // If the declarator-id has a scope specifier, it must redeclare a
2609 // previously-declared entity. If that's a type (and this is not a
2610 // typedef), that's an error.
2612 Actions.RestoreNestedNameSpecifierAnnotation(
2613 Tok.getAnnotationValue(), Tok.getAnnotationRange(), SS);
2614 IdentifierInfo *Name = AfterScope.getIdentifierInfo();
2615 Sema::NameClassification Classification = Actions.ClassifyName(
2616 getCurScope(), SS, Name, AfterScope.getLocation(), Next,
2617 /*IsAddressOfOperand*/false);
2618 switch (Classification.getKind()) {
2619 case Sema::NC_Error:
2620 SkipMalformedDecl();
2623 case Sema::NC_Keyword:
2624 case Sema::NC_NestedNameSpecifier:
2625 llvm_unreachable("typo correction and nested name specifiers not "
2629 case Sema::NC_TypeTemplate:
2630 // Not a previously-declared non-type entity.
2631 MightBeDeclarator = false;
2634 case Sema::NC_Unknown:
2635 case Sema::NC_Expression:
2636 case Sema::NC_VarTemplate:
2637 case Sema::NC_FunctionTemplate:
2638 // Might be a redeclaration of a prior entity.
2644 if (MightBeDeclarator)
2647 const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy();
2648 Diag(PP.getLocForEndOfToken(DS.getRepAsDecl()->getLocEnd()),
2649 diag::err_expected_after)
2650 << DeclSpec::getSpecifierName(DS.getTypeSpecType(), PPol) << tok::semi;
2652 // Try to recover from the typo, by dropping the tag definition and parsing
2653 // the problematic tokens as a type.
2655 // FIXME: Split the DeclSpec into pieces for the standalone
2656 // declaration and pieces for the following declaration, instead
2657 // of assuming that all the other pieces attach to new declaration,
2658 // and call ParsedFreeStandingDeclSpec as appropriate.
2659 DS.ClearTypeSpecType();
2660 ParsedTemplateInfo NotATemplate;
2661 ParseDeclarationSpecifiers(DS, NotATemplate, AS, DSContext, LateAttrs);
2665 /// ParseDeclarationSpecifiers
2666 /// declaration-specifiers: [C99 6.7]
2667 /// storage-class-specifier declaration-specifiers[opt]
2668 /// type-specifier declaration-specifiers[opt]
2669 /// [C99] function-specifier declaration-specifiers[opt]
2670 /// [C11] alignment-specifier declaration-specifiers[opt]
2671 /// [GNU] attributes declaration-specifiers[opt]
2672 /// [Clang] '__module_private__' declaration-specifiers[opt]
2673 /// [ObjC1] '__kindof' declaration-specifiers[opt]
2675 /// storage-class-specifier: [C99 6.7.1]
2682 /// [C++11] 'thread_local'
2683 /// [C11] '_Thread_local'
2684 /// [GNU] '__thread'
2685 /// function-specifier: [C99 6.7.4]
2688 /// [C++] 'explicit'
2689 /// [OpenCL] '__kernel'
2690 /// 'friend': [C++ dcl.friend]
2691 /// 'constexpr': [C++0x dcl.constexpr]
2692 void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
2693 const ParsedTemplateInfo &TemplateInfo,
2695 DeclSpecContext DSContext,
2696 LateParsedAttrList *LateAttrs) {
2697 if (DS.getSourceRange().isInvalid()) {
2698 // Start the range at the current token but make the end of the range
2699 // invalid. This will make the entire range invalid unless we successfully
2701 DS.SetRangeStart(Tok.getLocation());
2702 DS.SetRangeEnd(SourceLocation());
2705 bool EnteringContext = (DSContext == DSC_class || DSContext == DSC_top_level);
2706 bool AttrsLastTime = false;
2707 ParsedAttributesWithRange attrs(AttrFactory);
2708 // We use Sema's policy to get bool macros right.
2709 PrintingPolicy Policy = Actions.getPrintingPolicy();
2711 bool isInvalid = false;
2712 bool isStorageClass = false;
2713 const char *PrevSpec = nullptr;
2714 unsigned DiagID = 0;
2716 // HACK: MSVC doesn't consider _Atomic to be a keyword and its STL
2717 // implementation for VS2013 uses _Atomic as an identifier for one of the
2718 // classes in <atomic>.
2720 // A typedef declaration containing _Atomic<...> is among the places where
2721 // the class is used. If we are currently parsing such a declaration, treat
2722 // the token as an identifier.
2723 if (getLangOpts().MSVCCompat && Tok.is(tok::kw__Atomic) &&
2724 DS.getStorageClassSpec() == clang::DeclSpec::SCS_typedef &&
2725 !DS.hasTypeSpecifier() && GetLookAheadToken(1).is(tok::less))
2726 Tok.setKind(tok::identifier);
2728 SourceLocation Loc = Tok.getLocation();
2730 switch (Tok.getKind()) {
2734 ProhibitAttributes(attrs);
2736 // Reject C++11 attributes that appertain to decl specifiers as
2737 // we don't support any C++11 attributes that appertain to decl
2738 // specifiers. This also conforms to what g++ 4.8 is doing.
2739 ProhibitCXX11Attributes(attrs, diag::err_attribute_not_type_attr);
2741 DS.takeAttributesFrom(attrs);
2744 // If this is not a declaration specifier token, we're done reading decl
2745 // specifiers. First verify that DeclSpec's are consistent.
2746 DS.Finish(Actions, Policy);
2750 case tok::kw_alignas:
2751 if (!getLangOpts().CPlusPlus11 || !isCXX11AttributeSpecifier())
2752 goto DoneWithDeclSpec;
2754 ProhibitAttributes(attrs);
2755 // FIXME: It would be good to recover by accepting the attributes,
2756 // but attempting to do that now would cause serious
2757 // madness in terms of diagnostics.
2759 attrs.Range = SourceRange();
2761 ParseCXX11Attributes(attrs);
2762 AttrsLastTime = true;
2765 case tok::code_completion: {
2766 Sema::ParserCompletionContext CCC = Sema::PCC_Namespace;
2767 if (DS.hasTypeSpecifier()) {
2768 bool AllowNonIdentifiers
2769 = (getCurScope()->getFlags() & (Scope::ControlScope |
2771 Scope::TemplateParamScope |
2772 Scope::FunctionPrototypeScope |
2773 Scope::AtCatchScope)) == 0;
2774 bool AllowNestedNameSpecifiers
2775 = DSContext == DSC_top_level ||
2776 (DSContext == DSC_class && DS.isFriendSpecified());
2778 Actions.CodeCompleteDeclSpec(getCurScope(), DS,
2779 AllowNonIdentifiers,
2780 AllowNestedNameSpecifiers);
2781 return cutOffParsing();
2784 if (getCurScope()->getFnParent() || getCurScope()->getBlockParent())
2785 CCC = Sema::PCC_LocalDeclarationSpecifiers;
2786 else if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate)
2787 CCC = DSContext == DSC_class? Sema::PCC_MemberTemplate
2788 : Sema::PCC_Template;
2789 else if (DSContext == DSC_class)
2790 CCC = Sema::PCC_Class;
2791 else if (CurParsedObjCImpl)
2792 CCC = Sema::PCC_ObjCImplementation;
2794 Actions.CodeCompleteOrdinaryName(getCurScope(), CCC);
2795 return cutOffParsing();
2798 case tok::coloncolon: // ::foo::bar
2799 // C++ scope specifier. Annotate and loop, or bail out on error.
2800 if (TryAnnotateCXXScopeToken(EnteringContext)) {
2801 if (!DS.hasTypeSpecifier())
2802 DS.SetTypeSpecError();
2803 goto DoneWithDeclSpec;
2805 if (Tok.is(tok::coloncolon)) // ::new or ::delete
2806 goto DoneWithDeclSpec;
2809 case tok::annot_cxxscope: {
2810 if (DS.hasTypeSpecifier() || DS.isTypeAltiVecVector())
2811 goto DoneWithDeclSpec;
2814 Actions.RestoreNestedNameSpecifierAnnotation(Tok.getAnnotationValue(),
2815 Tok.getAnnotationRange(),
2818 // We are looking for a qualified typename.
2819 Token Next = NextToken();
2820 if (Next.is(tok::annot_template_id) &&
2821 static_cast<TemplateIdAnnotation *>(Next.getAnnotationValue())
2822 ->Kind == TNK_Type_template) {
2823 // We have a qualified template-id, e.g., N::A<int>
2825 // C++ [class.qual]p2:
2826 // In a lookup in which the constructor is an acceptable lookup
2827 // result and the nested-name-specifier nominates a class C:
2829 // - if the name specified after the
2830 // nested-name-specifier, when looked up in C, is the
2831 // injected-class-name of C (Clause 9), or
2833 // - if the name specified after the nested-name-specifier
2834 // is the same as the identifier or the
2835 // simple-template-id's template-name in the last
2836 // component of the nested-name-specifier,
2838 // the name is instead considered to name the constructor of
2841 // Thus, if the template-name is actually the constructor
2842 // name, then the code is ill-formed; this interpretation is
2843 // reinforced by the NAD status of core issue 635.
2844 TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Next);
2845 if ((DSContext == DSC_top_level || DSContext == DSC_class) &&
2847 Actions.isCurrentClassName(*TemplateId->Name, getCurScope(), &SS)) {
2848 if (isConstructorDeclarator(/*Unqualified*/false)) {
2849 // The user meant this to be an out-of-line constructor
2850 // definition, but template arguments are not allowed
2851 // there. Just allow this as a constructor; we'll
2852 // complain about it later.
2853 goto DoneWithDeclSpec;
2856 // The user meant this to name a type, but it actually names
2857 // a constructor with some extraneous template
2858 // arguments. Complain, then parse it as a type as the user
2860 Diag(TemplateId->TemplateNameLoc,
2861 diag::err_out_of_line_template_id_type_names_constructor)
2862 << TemplateId->Name << 0 /* template name */;
2865 DS.getTypeSpecScope() = SS;
2866 ConsumeToken(); // The C++ scope.
2867 assert(Tok.is(tok::annot_template_id) &&
2868 "ParseOptionalCXXScopeSpecifier not working");
2869 AnnotateTemplateIdTokenAsType();
2873 if (Next.is(tok::annot_typename)) {
2874 DS.getTypeSpecScope() = SS;
2875 ConsumeToken(); // The C++ scope.
2876 if (Tok.getAnnotationValue()) {
2877 ParsedType T = getTypeAnnotation(Tok);
2878 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename,
2879 Tok.getAnnotationEndLoc(),
2880 PrevSpec, DiagID, T, Policy);
2885 DS.SetTypeSpecError();
2886 DS.SetRangeEnd(Tok.getAnnotationEndLoc());
2887 ConsumeToken(); // The typename
2890 if (Next.isNot(tok::identifier))
2891 goto DoneWithDeclSpec;
2893 // If we're in a context where the identifier could be a class name,
2894 // check whether this is a constructor declaration.
2895 if ((DSContext == DSC_top_level || DSContext == DSC_class) &&
2896 Actions.isCurrentClassName(*Next.getIdentifierInfo(), getCurScope(),
2898 if (isConstructorDeclarator(/*Unqualified*/false))
2899 goto DoneWithDeclSpec;
2901 // As noted in C++ [class.qual]p2 (cited above), when the name
2902 // of the class is qualified in a context where it could name
2903 // a constructor, its a constructor name. However, we've
2904 // looked at the declarator, and the user probably meant this
2905 // to be a type. Complain that it isn't supposed to be treated
2906 // as a type, then proceed to parse it as a type.
2907 Diag(Next.getLocation(),
2908 diag::err_out_of_line_template_id_type_names_constructor)
2909 << Next.getIdentifierInfo() << 1 /* type */;
2912 ParsedType TypeRep =
2913 Actions.getTypeName(*Next.getIdentifierInfo(), Next.getLocation(),
2914 getCurScope(), &SS, false, false, nullptr,
2915 /*IsCtorOrDtorName=*/false,
2916 /*NonTrivialSourceInfo=*/true);
2918 // If the referenced identifier is not a type, then this declspec is
2919 // erroneous: We already checked about that it has no type specifier, and
2920 // C++ doesn't have implicit int. Diagnose it as a typo w.r.t. to the
2923 ConsumeToken(); // Eat the scope spec so the identifier is current.
2924 ParsedAttributesWithRange Attrs(AttrFactory);
2925 if (ParseImplicitInt(DS, &SS, TemplateInfo, AS, DSContext, Attrs)) {
2926 if (!Attrs.empty()) {
2927 AttrsLastTime = true;
2928 attrs.takeAllFrom(Attrs);
2932 goto DoneWithDeclSpec;
2935 DS.getTypeSpecScope() = SS;
2936 ConsumeToken(); // The C++ scope.
2938 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
2939 DiagID, TypeRep, Policy);
2943 DS.SetRangeEnd(Tok.getLocation());
2944 ConsumeToken(); // The typename.
2949 case tok::annot_typename: {
2950 // If we've previously seen a tag definition, we were almost surely
2951 // missing a semicolon after it.
2952 if (DS.hasTypeSpecifier() && DS.hasTagDefinition())
2953 goto DoneWithDeclSpec;
2955 if (Tok.getAnnotationValue()) {
2956 ParsedType T = getTypeAnnotation(Tok);
2957 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
2960 DS.SetTypeSpecError();
2965 DS.SetRangeEnd(Tok.getAnnotationEndLoc());
2966 ConsumeToken(); // The typename
2971 case tok::kw___is_signed:
2972 // GNU libstdc++ 4.4 uses __is_signed as an identifier, but Clang
2973 // typically treats it as a trait. If we see __is_signed as it appears
2974 // in libstdc++, e.g.,
2976 // static const bool __is_signed;
2978 // then treat __is_signed as an identifier rather than as a keyword.
2979 if (DS.getTypeSpecType() == TST_bool &&
2980 DS.getTypeQualifiers() == DeclSpec::TQ_const &&
2981 DS.getStorageClassSpec() == DeclSpec::SCS_static)
2982 TryKeywordIdentFallback(true);
2984 // We're done with the declaration-specifiers.
2985 goto DoneWithDeclSpec;
2988 case tok::kw___super:
2989 case tok::kw_decltype:
2990 case tok::identifier: {
2991 // This identifier can only be a typedef name if we haven't already seen
2992 // a type-specifier. Without this check we misparse:
2993 // typedef int X; struct Y { short X; }; as 'short int'.
2994 if (DS.hasTypeSpecifier())
2995 goto DoneWithDeclSpec;
2997 // In C++, check to see if this is a scope specifier like foo::bar::, if
2998 // so handle it as such. This is important for ctor parsing.
2999 if (getLangOpts().CPlusPlus) {
3000 if (TryAnnotateCXXScopeToken(EnteringContext)) {
3001 DS.SetTypeSpecError();
3002 goto DoneWithDeclSpec;
3004 if (!Tok.is(tok::identifier))
3008 // Check for need to substitute AltiVec keyword tokens.
3009 if (TryAltiVecToken(DS, Loc, PrevSpec, DiagID, isInvalid))
3012 // [AltiVec] 2.2: [If the 'vector' specifier is used] The syntax does not
3013 // allow the use of a typedef name as a type specifier.
3014 if (DS.isTypeAltiVecVector())
3015 goto DoneWithDeclSpec;
3017 if (DSContext == DSC_objc_method_result && isObjCInstancetype()) {
3018 ParsedType TypeRep = Actions.ActOnObjCInstanceType(Loc);
3020 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
3021 DiagID, TypeRep, Policy);
3025 DS.SetRangeEnd(Loc);
3030 ParsedType TypeRep =
3031 Actions.getTypeName(*Tok.getIdentifierInfo(),
3032 Tok.getLocation(), getCurScope());
3034 // If this is not a typedef name, don't parse it as part of the declspec,
3035 // it must be an implicit int or an error.
3037 ParsedAttributesWithRange Attrs(AttrFactory);
3038 if (ParseImplicitInt(DS, nullptr, TemplateInfo, AS, DSContext, Attrs)) {
3039 if (!Attrs.empty()) {
3040 AttrsLastTime = true;
3041 attrs.takeAllFrom(Attrs);
3045 goto DoneWithDeclSpec;
3048 // If we're in a context where the identifier could be a class name,
3049 // check whether this is a constructor declaration.
3050 if (getLangOpts().CPlusPlus && DSContext == DSC_class &&
3051 Actions.isCurrentClassName(*Tok.getIdentifierInfo(), getCurScope()) &&
3052 isConstructorDeclarator(/*Unqualified*/true))
3053 goto DoneWithDeclSpec;
3055 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
3056 DiagID, TypeRep, Policy);
3060 DS.SetRangeEnd(Tok.getLocation());
3061 ConsumeToken(); // The identifier
3063 // Objective-C supports type arguments and protocol references
3064 // following an Objective-C object or object pointer
3065 // type. Handle either one of them.
3066 if (Tok.is(tok::less) && getLangOpts().ObjC1) {
3067 SourceLocation NewEndLoc;
3068 TypeResult NewTypeRep = parseObjCTypeArgsAndProtocolQualifiers(
3069 Loc, TypeRep, /*consumeLastToken=*/true,
3071 if (NewTypeRep.isUsable()) {
3072 DS.UpdateTypeRep(NewTypeRep.get());
3073 DS.SetRangeEnd(NewEndLoc);
3077 // Need to support trailing type qualifiers (e.g. "id<p> const").
3078 // If a type specifier follows, it will be diagnosed elsewhere.
3083 case tok::annot_template_id: {
3084 TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
3085 if (TemplateId->Kind != TNK_Type_template) {
3086 // This template-id does not refer to a type name, so we're
3087 // done with the type-specifiers.
3088 goto DoneWithDeclSpec;
3091 // If we're in a context where the template-id could be a
3092 // constructor name or specialization, check whether this is a
3093 // constructor declaration.
3094 if (getLangOpts().CPlusPlus && DSContext == DSC_class &&
3095 Actions.isCurrentClassName(*TemplateId->Name, getCurScope()) &&
3096 isConstructorDeclarator(TemplateId->SS.isEmpty()))
3097 goto DoneWithDeclSpec;
3099 // Turn the template-id annotation token into a type annotation
3100 // token, then try again to parse it as a type-specifier.
3101 AnnotateTemplateIdTokenAsType();
3105 // GNU attributes support.
3106 case tok::kw___attribute:
3107 ParseGNUAttributes(DS.getAttributes(), nullptr, LateAttrs);
3110 // Microsoft declspec support.
3111 case tok::kw___declspec:
3112 ParseMicrosoftDeclSpecs(DS.getAttributes());
3115 // Microsoft single token adornments.
3116 case tok::kw___forceinline: {
3117 isInvalid = DS.setFunctionSpecForceInline(Loc, PrevSpec, DiagID);
3118 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
3119 SourceLocation AttrNameLoc = Tok.getLocation();
3120 DS.getAttributes().addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc,
3121 nullptr, 0, AttributeList::AS_Keyword);
3125 case tok::kw___unaligned:
3126 isInvalid = DS.SetTypeQual(DeclSpec::TQ_unaligned, Loc, PrevSpec, DiagID,
3130 case tok::kw___sptr:
3131 case tok::kw___uptr:
3132 case tok::kw___ptr64:
3133 case tok::kw___ptr32:
3135 case tok::kw___cdecl:
3136 case tok::kw___stdcall:
3137 case tok::kw___fastcall:
3138 case tok::kw___thiscall:
3139 case tok::kw___regcall:
3140 case tok::kw___vectorcall:
3141 ParseMicrosoftTypeAttributes(DS.getAttributes());
3144 // Borland single token adornments.
3145 case tok::kw___pascal:
3146 ParseBorlandTypeAttributes(DS.getAttributes());
3149 // OpenCL single token adornments.
3150 case tok::kw___kernel:
3151 ParseOpenCLKernelAttributes(DS.getAttributes());
3154 // Nullability type specifiers.
3155 case tok::kw__Nonnull:
3156 case tok::kw__Nullable:
3157 case tok::kw__Null_unspecified:
3158 ParseNullabilityTypeSpecifiers(DS.getAttributes());
3161 // Objective-C 'kindof' types.
3162 case tok::kw___kindof:
3163 DS.getAttributes().addNew(Tok.getIdentifierInfo(), Loc, nullptr, Loc,
3164 nullptr, 0, AttributeList::AS_Keyword);
3165 (void)ConsumeToken();
3168 // storage-class-specifier
3169 case tok::kw_typedef:
3170 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_typedef, Loc,
3171 PrevSpec, DiagID, Policy);
3172 isStorageClass = true;
3174 case tok::kw_extern:
3175 if (DS.getThreadStorageClassSpec() == DeclSpec::TSCS___thread)
3176 Diag(Tok, diag::ext_thread_before) << "extern";
3177 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_extern, Loc,
3178 PrevSpec, DiagID, Policy);
3179 isStorageClass = true;
3181 case tok::kw___private_extern__:
3182 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_private_extern,
3183 Loc, PrevSpec, DiagID, Policy);
3184 isStorageClass = true;
3186 case tok::kw_static:
3187 if (DS.getThreadStorageClassSpec() == DeclSpec::TSCS___thread)
3188 Diag(Tok, diag::ext_thread_before) << "static";
3189 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_static, Loc,
3190 PrevSpec, DiagID, Policy);
3191 isStorageClass = true;
3194 if (getLangOpts().CPlusPlus11) {
3195 if (isKnownToBeTypeSpecifier(GetLookAheadToken(1))) {
3196 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
3197 PrevSpec, DiagID, Policy);
3199 Diag(Tok, diag::ext_auto_storage_class)
3200 << FixItHint::CreateRemoval(DS.getStorageClassSpecLoc());
3202 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto, Loc, PrevSpec,
3205 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
3206 PrevSpec, DiagID, Policy);
3207 isStorageClass = true;
3209 case tok::kw___auto_type:
3210 Diag(Tok, diag::ext_auto_type);
3211 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto_type, Loc, PrevSpec,
3214 case tok::kw_register:
3215 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_register, Loc,
3216 PrevSpec, DiagID, Policy);
3217 isStorageClass = true;
3219 case tok::kw_mutable:
3220 isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_mutable, Loc,
3221 PrevSpec, DiagID, Policy);
3222 isStorageClass = true;
3224 case tok::kw___thread:
3225 isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS___thread, Loc,
3227 isStorageClass = true;
3229 case tok::kw_thread_local:
3230 isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS_thread_local, Loc,
3233 case tok::kw__Thread_local:
3234 isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS__Thread_local,
3235 Loc, PrevSpec, DiagID);
3236 isStorageClass = true;
3239 // function-specifier
3240 case tok::kw_inline:
3241 isInvalid = DS.setFunctionSpecInline(Loc, PrevSpec, DiagID);
3243 case tok::kw_virtual:
3244 isInvalid = DS.setFunctionSpecVirtual(Loc, PrevSpec, DiagID);
3246 case tok::kw_explicit:
3247 isInvalid = DS.setFunctionSpecExplicit(Loc, PrevSpec, DiagID);
3249 case tok::kw__Noreturn:
3250 if (!getLangOpts().C11)
3251 Diag(Loc, diag::ext_c11_noreturn);
3252 isInvalid = DS.setFunctionSpecNoreturn(Loc, PrevSpec, DiagID);
3255 // alignment-specifier
3256 case tok::kw__Alignas:
3257 if (!getLangOpts().C11)
3258 Diag(Tok, diag::ext_c11_alignment) << Tok.getName();
3259 ParseAlignmentSpecifier(DS.getAttributes());
3263 case tok::kw_friend:
3264 if (DSContext == DSC_class)
3265 isInvalid = DS.SetFriendSpec(Loc, PrevSpec, DiagID);
3267 PrevSpec = ""; // not actually used by the diagnostic
3268 DiagID = diag::err_friend_invalid_in_context;
3274 case tok::kw___module_private__:
3275 isInvalid = DS.setModulePrivateSpec(Loc, PrevSpec, DiagID);
3279 case tok::kw_constexpr:
3280 isInvalid = DS.SetConstexprSpec(Loc, PrevSpec, DiagID);
3284 case tok::kw_concept:
3285 isInvalid = DS.SetConceptSpec(Loc, PrevSpec, DiagID);
3290 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_short, Loc, PrevSpec,
3294 if (DS.getTypeSpecWidth() != DeclSpec::TSW_long)
3295 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_long, Loc, PrevSpec,
3298 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
3301 case tok::kw___int64:
3302 isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
3305 case tok::kw_signed:
3306 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_signed, Loc, PrevSpec,
3309 case tok::kw_unsigned:
3310 isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_unsigned, Loc, PrevSpec,
3313 case tok::kw__Complex:
3314 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_complex, Loc, PrevSpec,
3317 case tok::kw__Imaginary:
3318 isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_imaginary, Loc, PrevSpec,
3322 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_void, Loc, PrevSpec,
3326 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char, Loc, PrevSpec,
3330 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, PrevSpec,
3333 case tok::kw___int128:
3334 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int128, Loc, PrevSpec,
3338 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_half, Loc, PrevSpec,
3342 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float, Loc, PrevSpec,
3345 case tok::kw_double:
3346 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_double, Loc, PrevSpec,
3349 case tok::kw___float128:
3350 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float128, Loc, PrevSpec,
3353 case tok::kw_wchar_t:
3354 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_wchar, Loc, PrevSpec,
3357 case tok::kw_char16_t:
3358 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char16, Loc, PrevSpec,
3361 case tok::kw_char32_t:
3362 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char32, Loc, PrevSpec,
3367 if (Tok.is(tok::kw_bool) &&
3368 DS.getTypeSpecType() != DeclSpec::TST_unspecified &&
3369 DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
3370 PrevSpec = ""; // Not used by the diagnostic.
3371 DiagID = diag::err_bool_redeclaration;
3372 // For better error recovery.
3373 Tok.setKind(tok::identifier);
3376 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_bool, Loc, PrevSpec,
3380 case tok::kw__Decimal32:
3381 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal32, Loc, PrevSpec,
3384 case tok::kw__Decimal64:
3385 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal64, Loc, PrevSpec,
3388 case tok::kw__Decimal128:
3389 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal128, Loc, PrevSpec,
3392 case tok::kw___vector:
3393 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID, Policy);
3395 case tok::kw___pixel:
3396 isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID, Policy);
3398 case tok::kw___bool:
3399 isInvalid = DS.SetTypeAltiVecBool(true, Loc, PrevSpec, DiagID, Policy);
3402 if (!getLangOpts().OpenCL || (getLangOpts().OpenCLVersion < 200)) {
3403 // OpenCL 2.0 defined this keyword. OpenCL 1.2 and earlier should
3404 // support the "pipe" word as identifier.
3405 Tok.getIdentifierInfo()->revertTokenIDToIdentifier();
3406 goto DoneWithDeclSpec;
3408 isInvalid = DS.SetTypePipe(true, Loc, PrevSpec, DiagID, Policy);
3410 #define GENERIC_IMAGE_TYPE(ImgType, Id) \
3411 case tok::kw_##ImgType##_t: \
3412 isInvalid = DS.SetTypeSpecType(DeclSpec::TST_##ImgType##_t, Loc, PrevSpec, \
3415 #include "clang/Basic/OpenCLImageTypes.def"
3416 case tok::kw___unknown_anytype:
3417 isInvalid = DS.SetTypeSpecType(TST_unknown_anytype, Loc,
3418 PrevSpec, DiagID, Policy);
3423 case tok::kw_struct:
3424 case tok::kw___interface:
3425 case tok::kw_union: {
3426 tok::TokenKind Kind = Tok.getKind();
3429 // These are attributes following class specifiers.
3430 // To produce better diagnostic, we parse them when
3431 // parsing class specifier.
3432 ParsedAttributesWithRange Attributes(AttrFactory);
3433 ParseClassSpecifier(Kind, Loc, DS, TemplateInfo, AS,
3434 EnteringContext, DSContext, Attributes);
3436 // If there are attributes following class specifier,
3437 // take them over and handle them here.
3438 if (!Attributes.empty()) {
3439 AttrsLastTime = true;
3440 attrs.takeAllFrom(Attributes);
3448 ParseEnumSpecifier(Loc, DS, TemplateInfo, AS, DSContext);
3453 isInvalid = DS.SetTypeQual(DeclSpec::TQ_const, Loc, PrevSpec, DiagID,
3456 case tok::kw_volatile:
3457 isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
3460 case tok::kw_restrict:
3461 isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
3465 // C++ typename-specifier:
3466 case tok::kw_typename:
3467 if (TryAnnotateTypeOrScopeToken()) {
3468 DS.SetTypeSpecError();
3469 goto DoneWithDeclSpec;
3471 if (!Tok.is(tok::kw_typename))
3475 // GNU typeof support.
3476 case tok::kw_typeof:
3477 ParseTypeofSpecifier(DS);
3480 case tok::annot_decltype:
3481 ParseDecltypeSpecifier(DS);
3484 case tok::annot_pragma_pack:
3488 case tok::annot_pragma_ms_pragma:
3489 HandlePragmaMSPragma();
3492 case tok::annot_pragma_ms_vtordisp:
3493 HandlePragmaMSVtorDisp();
3496 case tok::annot_pragma_ms_pointers_to_members:
3497 HandlePragmaMSPointersToMembers();
3500 case tok::kw___underlying_type:
3501 ParseUnderlyingTypeSpecifier(DS);
3504 case tok::kw__Atomic:
3506 // If the _Atomic keyword is immediately followed by a left parenthesis,
3507 // it is interpreted as a type specifier (with a type name), not as a
3509 if (NextToken().is(tok::l_paren)) {
3510 ParseAtomicSpecifier(DS);
3513 isInvalid = DS.SetTypeQual(DeclSpec::TQ_atomic, Loc, PrevSpec, DiagID,
3517 // OpenCL qualifiers:
3518 case tok::kw___generic:
3519 // generic address space is introduced only in OpenCL v2.0
3520 // see OpenCL C Spec v2.0 s6.5.5
3521 if (Actions.getLangOpts().OpenCLVersion < 200) {
3522 DiagID = diag::err_opencl_unknown_type_specifier;
3523 PrevSpec = Tok.getIdentifierInfo()->getNameStart();
3527 case tok::kw___private:
3528 case tok::kw___global:
3529 case tok::kw___local:
3530 case tok::kw___constant:
3531 case tok::kw___read_only:
3532 case tok::kw___write_only:
3533 case tok::kw___read_write:
3534 ParseOpenCLQualifiers(DS.getAttributes());
3538 // GCC ObjC supports types like "<SomeProtocol>" as a synonym for
3539 // "id<SomeProtocol>". This is hopelessly old fashioned and dangerous,
3540 // but we support it.
3541 if (DS.hasTypeSpecifier() || !getLangOpts().ObjC1)
3542 goto DoneWithDeclSpec;
3544 SourceLocation StartLoc = Tok.getLocation();
3545 SourceLocation EndLoc;
3546 TypeResult Type = parseObjCProtocolQualifierType(EndLoc);
3547 if (Type.isUsable()) {
3548 if (DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc, StartLoc,
3549 PrevSpec, DiagID, Type.get(),
3550 Actions.getASTContext().getPrintingPolicy()))
3551 Diag(StartLoc, DiagID) << PrevSpec;
3553 DS.SetRangeEnd(EndLoc);
3555 DS.SetTypeSpecError();
3558 // Need to support trailing type qualifiers (e.g. "id<p> const").
3559 // If a type specifier follows, it will be diagnosed elsewhere.
3562 // If the specifier wasn't legal, issue a diagnostic.
3564 assert(PrevSpec && "Method did not return previous specifier!");
3567 if (DiagID == diag::ext_duplicate_declspec)
3569 << PrevSpec << FixItHint::CreateRemoval(Tok.getLocation());
3570 else if (DiagID == diag::err_opencl_unknown_type_specifier) {
3571 const int OpenCLVer = getLangOpts().OpenCLVersion;
3572 std::string VerSpec = llvm::to_string(OpenCLVer / 100) +
3574 llvm::to_string((OpenCLVer % 100) / 10);
3575 Diag(Tok, DiagID) << VerSpec << PrevSpec << isStorageClass;
3577 Diag(Tok, DiagID) << PrevSpec;
3580 DS.SetRangeEnd(Tok.getLocation());
3581 if (DiagID != diag::err_bool_redeclaration)
3584 AttrsLastTime = false;
3588 /// ParseStructDeclaration - Parse a struct declaration without the terminating
3591 /// struct-declaration:
3592 /// specifier-qualifier-list struct-declarator-list
3593 /// [GNU] __extension__ struct-declaration
3594 /// [GNU] specifier-qualifier-list
3595 /// struct-declarator-list:
3596 /// struct-declarator
3597 /// struct-declarator-list ',' struct-declarator
3598 /// [GNU] struct-declarator-list ',' attributes[opt] struct-declarator
3599 /// struct-declarator:
3601 /// [GNU] declarator attributes[opt]
3602 /// declarator[opt] ':' constant-expression
3603 /// [GNU] declarator[opt] ':' constant-expression attributes[opt]
3605 void Parser::ParseStructDeclaration(
3606 ParsingDeclSpec &DS,
3607 llvm::function_ref<void(ParsingFieldDeclarator &)> FieldsCallback) {
3609 if (Tok.is(tok::kw___extension__)) {
3610 // __extension__ silences extension warnings in the subexpression.
3611 ExtensionRAIIObject O(Diags); // Use RAII to do this.
3613 return ParseStructDeclaration(DS, FieldsCallback);
3616 // Parse the common specifier-qualifiers-list piece.
3617 ParseSpecifierQualifierList(DS);
3619 // If there are no declarators, this is a free-standing declaration
3620 // specifier. Let the actions module cope with it.
3621 if (Tok.is(tok::semi)) {
3622 RecordDecl *AnonRecord = nullptr;
3623 Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
3625 assert(!AnonRecord && "Did not expect anonymous struct or union here");
3626 DS.complete(TheDecl);
3630 // Read struct-declarators until we find the semicolon.
3631 bool FirstDeclarator = true;
3632 SourceLocation CommaLoc;
3634 ParsingFieldDeclarator DeclaratorInfo(*this, DS);
3635 DeclaratorInfo.D.setCommaLoc(CommaLoc);
3637 // Attributes are only allowed here on successive declarators.
3638 if (!FirstDeclarator)
3639 MaybeParseGNUAttributes(DeclaratorInfo.D);
3641 /// struct-declarator: declarator
3642 /// struct-declarator: declarator[opt] ':' constant-expression
3643 if (Tok.isNot(tok::colon)) {
3644 // Don't parse FOO:BAR as if it were a typo for FOO::BAR.
3645 ColonProtectionRAIIObject X(*this);
3646 ParseDeclarator(DeclaratorInfo.D);
3648 DeclaratorInfo.D.SetIdentifier(nullptr, Tok.getLocation());
3650 if (TryConsumeToken(tok::colon)) {
3651 ExprResult Res(ParseConstantExpression());
3652 if (Res.isInvalid())
3653 SkipUntil(tok::semi, StopBeforeMatch);
3655 DeclaratorInfo.BitfieldSize = Res.get();
3658 // If attributes exist after the declarator, parse them.
3659 MaybeParseGNUAttributes(DeclaratorInfo.D);
3661 // We're done with this declarator; invoke the callback.
3662 FieldsCallback(DeclaratorInfo);
3664 // If we don't have a comma, it is either the end of the list (a ';')
3665 // or an error, bail out.
3666 if (!TryConsumeToken(tok::comma, CommaLoc))
3669 FirstDeclarator = false;
3673 /// ParseStructUnionBody
3674 /// struct-contents:
3675 /// struct-declaration-list
3677 /// [GNU] "struct-declaration-list" without terminatoring ';'
3678 /// struct-declaration-list:
3679 /// struct-declaration
3680 /// struct-declaration-list struct-declaration
3681 /// [OBC] '@' 'defs' '(' class-name ')'
3683 void Parser::ParseStructUnionBody(SourceLocation RecordLoc,
3684 unsigned TagType, Decl *TagDecl) {
3685 PrettyDeclStackTraceEntry CrashInfo(Actions, TagDecl, RecordLoc,
3686 "parsing struct/union body");
3687 assert(!getLangOpts().CPlusPlus && "C++ declarations not supported");
3689 BalancedDelimiterTracker T(*this, tok::l_brace);
3690 if (T.consumeOpen())
3693 ParseScope StructScope(this, Scope::ClassScope|Scope::DeclScope);
3694 Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
3696 SmallVector<Decl *, 32> FieldDecls;
3698 // While we still have something to read, read the declarations in the struct.
3699 while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
3700 Tok.isNot(tok::eof)) {
3701 // Each iteration of this loop reads one struct-declaration.
3703 // Check for extraneous top-level semicolon.
3704 if (Tok.is(tok::semi)) {
3705 ConsumeExtraSemi(InsideStruct, TagType);
3709 // Parse _Static_assert declaration.
3710 if (Tok.is(tok::kw__Static_assert)) {
3711 SourceLocation DeclEnd;
3712 ParseStaticAssertDeclaration(DeclEnd);
3716 if (Tok.is(tok::annot_pragma_pack)) {
3721 if (Tok.is(tok::annot_pragma_align)) {
3722 HandlePragmaAlign();
3726 if (Tok.is(tok::annot_pragma_openmp)) {
3727 // Result can be ignored, because it must be always empty.
3728 AccessSpecifier AS = AS_none;
3729 ParsedAttributesWithRange Attrs(AttrFactory);
3730 (void)ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs);
3734 if (!Tok.is(tok::at)) {
3735 auto CFieldCallback = [&](ParsingFieldDeclarator &FD) {
3736 // Install the declarator into the current TagDecl.
3738 Actions.ActOnField(getCurScope(), TagDecl,
3739 FD.D.getDeclSpec().getSourceRange().getBegin(),
3740 FD.D, FD.BitfieldSize);
3741 FieldDecls.push_back(Field);
3745 // Parse all the comma separated declarators.
3746 ParsingDeclSpec DS(*this);
3747 ParseStructDeclaration(DS, CFieldCallback);
3748 } else { // Handle @defs
3750 if (!Tok.isObjCAtKeyword(tok::objc_defs)) {
3751 Diag(Tok, diag::err_unexpected_at);
3752 SkipUntil(tok::semi);
3756 ExpectAndConsume(tok::l_paren);
3757 if (!Tok.is(tok::identifier)) {
3758 Diag(Tok, diag::err_expected) << tok::identifier;
3759 SkipUntil(tok::semi);
3762 SmallVector<Decl *, 16> Fields;
3763 Actions.ActOnDefs(getCurScope(), TagDecl, Tok.getLocation(),
3764 Tok.getIdentifierInfo(), Fields);
3765 FieldDecls.insert(FieldDecls.end(), Fields.begin(), Fields.end());
3767 ExpectAndConsume(tok::r_paren);
3770 if (TryConsumeToken(tok::semi))
3773 if (Tok.is(tok::r_brace)) {
3774 ExpectAndConsume(tok::semi, diag::ext_expected_semi_decl_list);
3778 ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list);
3779 // Skip to end of block or statement to avoid ext-warning on extra ';'.
3780 SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
3781 // If we stopped at a ';', eat it.
3782 TryConsumeToken(tok::semi);
3787 ParsedAttributes attrs(AttrFactory);
3788 // If attributes exist after struct contents, parse them.
3789 MaybeParseGNUAttributes(attrs);
3791 Actions.ActOnFields(getCurScope(),
3792 RecordLoc, TagDecl, FieldDecls,
3793 T.getOpenLocation(), T.getCloseLocation(),
3796 Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl, T.getRange());
3799 /// ParseEnumSpecifier
3800 /// enum-specifier: [C99 6.7.2.2]
3801 /// 'enum' identifier[opt] '{' enumerator-list '}'
3802 ///[C99/C++]'enum' identifier[opt] '{' enumerator-list ',' '}'
3803 /// [GNU] 'enum' attributes[opt] identifier[opt] '{' enumerator-list ',' [opt]
3804 /// '}' attributes[opt]
3805 /// [MS] 'enum' __declspec[opt] identifier[opt] '{' enumerator-list ',' [opt]
3807 /// 'enum' identifier
3808 /// [GNU] 'enum' attributes[opt] identifier
3810 /// [C++11] enum-head '{' enumerator-list[opt] '}'
3811 /// [C++11] enum-head '{' enumerator-list ',' '}'
3813 /// enum-head: [C++11]
3814 /// enum-key attribute-specifier-seq[opt] identifier[opt] enum-base[opt]
3815 /// enum-key attribute-specifier-seq[opt] nested-name-specifier
3816 /// identifier enum-base[opt]
3818 /// enum-key: [C++11]
3823 /// enum-base: [C++11]
3824 /// ':' type-specifier-seq
3826 /// [C++] elaborated-type-specifier:
3827 /// [C++] 'enum' '::'[opt] nested-name-specifier[opt] identifier
3829 void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS,
3830 const ParsedTemplateInfo &TemplateInfo,
3831 AccessSpecifier AS, DeclSpecContext DSC) {
3832 // Parse the tag portion of this.
3833 if (Tok.is(tok::code_completion)) {
3834 // Code completion for an enum name.
3835 Actions.CodeCompleteTag(getCurScope(), DeclSpec::TST_enum);
3836 return cutOffParsing();
3839 // If attributes exist after tag, parse them.
3840 ParsedAttributesWithRange attrs(AttrFactory);
3841 MaybeParseGNUAttributes(attrs);
3842 MaybeParseCXX11Attributes(attrs);
3843 MaybeParseMicrosoftDeclSpecs(attrs);
3845 SourceLocation ScopedEnumKWLoc;
3846 bool IsScopedUsingClassTag = false;
3848 // In C++11, recognize 'enum class' and 'enum struct'.
3849 if (Tok.isOneOf(tok::kw_class, tok::kw_struct)) {
3850 Diag(Tok, getLangOpts().CPlusPlus11 ? diag::warn_cxx98_compat_scoped_enum
3851 : diag::ext_scoped_enum);
3852 IsScopedUsingClassTag = Tok.is(tok::kw_class);
3853 ScopedEnumKWLoc = ConsumeToken();
3855 // Attributes are not allowed between these keywords. Diagnose,
3856 // but then just treat them like they appeared in the right place.
3857 ProhibitAttributes(attrs);
3859 // They are allowed afterwards, though.
3860 MaybeParseGNUAttributes(attrs);
3861 MaybeParseCXX11Attributes(attrs);
3862 MaybeParseMicrosoftDeclSpecs(attrs);
3865 // C++11 [temp.explicit]p12:
3866 // The usual access controls do not apply to names used to specify
3867 // explicit instantiations.
3868 // We extend this to also cover explicit specializations. Note that
3869 // we don't suppress if this turns out to be an elaborated type
3871 bool shouldDelayDiagsInTag =
3872 (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
3873 TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
3874 SuppressAccessChecks diagsFromTag(*this, shouldDelayDiagsInTag);
3876 // Enum definitions should not be parsed in a trailing-return-type.
3877 bool AllowDeclaration = DSC != DSC_trailing;
3879 bool AllowFixedUnderlyingType = AllowDeclaration &&
3880 (getLangOpts().CPlusPlus11 || getLangOpts().MicrosoftExt ||
3881 getLangOpts().ObjC2);
3883 CXXScopeSpec &SS = DS.getTypeSpecScope();
3884 if (getLangOpts().CPlusPlus) {
3885 // "enum foo : bar;" is not a potential typo for "enum foo::bar;"
3886 // if a fixed underlying type is allowed.
3887 ColonProtectionRAIIObject X(*this, AllowFixedUnderlyingType);
3890 if (ParseOptionalCXXScopeSpecifier(Spec, nullptr,
3891 /*EnteringContext=*/true))
3894 if (Spec.isSet() && Tok.isNot(tok::identifier)) {
3895 Diag(Tok, diag::err_expected) << tok::identifier;
3896 if (Tok.isNot(tok::l_brace)) {
3897 // Has no name and is not a definition.
3898 // Skip the rest of this declarator, up until the comma or semicolon.
3899 SkipUntil(tok::comma, StopAtSemi);
3907 // Must have either 'enum name' or 'enum {...}'.
3908 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::l_brace) &&
3909 !(AllowFixedUnderlyingType && Tok.is(tok::colon))) {
3910 Diag(Tok, diag::err_expected_either) << tok::identifier << tok::l_brace;
3912 // Skip the rest of this declarator, up until the comma or semicolon.
3913 SkipUntil(tok::comma, StopAtSemi);
3917 // If an identifier is present, consume and remember it.
3918 IdentifierInfo *Name = nullptr;
3919 SourceLocation NameLoc;
3920 if (Tok.is(tok::identifier)) {
3921 Name = Tok.getIdentifierInfo();
3922 NameLoc = ConsumeToken();
3925 if (!Name && ScopedEnumKWLoc.isValid()) {
3926 // C++0x 7.2p2: The optional identifier shall not be omitted in the
3927 // declaration of a scoped enumeration.
3928 Diag(Tok, diag::err_scoped_enum_missing_identifier);
3929 ScopedEnumKWLoc = SourceLocation();
3930 IsScopedUsingClassTag = false;
3933 // Okay, end the suppression area. We'll decide whether to emit the
3934 // diagnostics in a second.
3935 if (shouldDelayDiagsInTag)
3936 diagsFromTag.done();
3938 TypeResult BaseType;
3940 // Parse the fixed underlying type.
3941 bool CanBeBitfield = getCurScope()->getFlags() & Scope::ClassScope;
3942 if (AllowFixedUnderlyingType && Tok.is(tok::colon)) {
3943 bool PossibleBitfield = false;
3944 if (CanBeBitfield) {
3945 // If we're in class scope, this can either be an enum declaration with
3946 // an underlying type, or a declaration of a bitfield member. We try to
3947 // use a simple disambiguation scheme first to catch the common cases
3948 // (integer literal, sizeof); if it's still ambiguous, we then consider
3949 // anything that's a simple-type-specifier followed by '(' as an
3950 // expression. This suffices because function types are not valid
3951 // underlying types anyway.
3952 EnterExpressionEvaluationContext Unevaluated(Actions,
3953 Sema::ConstantEvaluated);
3954 TPResult TPR = isExpressionOrTypeSpecifierSimple(NextToken().getKind());
3955 // If the next token starts an expression, we know we're parsing a
3956 // bit-field. This is the common case.
3957 if (TPR == TPResult::True)
3958 PossibleBitfield = true;
3959 // If the next token starts a type-specifier-seq, it may be either a
3960 // a fixed underlying type or the start of a function-style cast in C++;
3961 // lookahead one more token to see if it's obvious that we have a
3962 // fixed underlying type.
3963 else if (TPR == TPResult::False &&
3964 GetLookAheadToken(2).getKind() == tok::semi) {
3968 // We have the start of a type-specifier-seq, so we have to perform
3969 // tentative parsing to determine whether we have an expression or a
3971 TentativeParsingAction TPA(*this);
3976 // If we see a type specifier followed by an open-brace, we have an
3977 // ambiguity between an underlying type and a C++11 braced
3978 // function-style cast. Resolve this by always treating it as an
3980 // FIXME: The standard is not entirely clear on how to disambiguate in
3982 if ((getLangOpts().CPlusPlus &&
3983 isCXXDeclarationSpecifier(TPResult::True) != TPResult::True) ||
3984 (!getLangOpts().CPlusPlus && !isDeclarationSpecifier(true))) {
3985 // We'll parse this as a bitfield later.
3986 PossibleBitfield = true;
3989 // We have a type-specifier-seq.
3998 if (!PossibleBitfield) {
4000 BaseType = ParseTypeName(&Range);
4002 if (getLangOpts().CPlusPlus11) {
4003 Diag(StartLoc, diag::warn_cxx98_compat_enum_fixed_underlying_type);
4004 } else if (!getLangOpts().ObjC2) {
4005 if (getLangOpts().CPlusPlus)
4006 Diag(StartLoc, diag::ext_cxx11_enum_fixed_underlying_type) << Range;
4008 Diag(StartLoc, diag::ext_c_enum_fixed_underlying_type) << Range;
4013 // There are four options here. If we have 'friend enum foo;' then this is a
4014 // friend declaration, and cannot have an accompanying definition. If we have
4015 // 'enum foo;', then this is a forward declaration. If we have
4016 // 'enum foo {...' then this is a definition. Otherwise we have something
4017 // like 'enum foo xyz', a reference.
4019 // This is needed to handle stuff like this right (C99 6.7.2.3p11):
4020 // enum foo {..}; void bar() { enum foo; } <- new foo in bar.
4021 // enum foo {..}; void bar() { enum foo x; } <- use of old foo.
4023 Sema::TagUseKind TUK;
4024 if (!AllowDeclaration) {
4025 TUK = Sema::TUK_Reference;
4026 } else if (Tok.is(tok::l_brace)) {
4027 if (DS.isFriendSpecified()) {
4028 Diag(Tok.getLocation(), diag::err_friend_decl_defines_type)
4029 << SourceRange(DS.getFriendSpecLoc());
4031 SkipUntil(tok::r_brace, StopAtSemi);
4032 TUK = Sema::TUK_Friend;
4034 TUK = Sema::TUK_Definition;
4036 } else if (!isTypeSpecifier(DSC) &&
4037 (Tok.is(tok::semi) ||
4038 (Tok.isAtStartOfLine() &&
4039 !isValidAfterTypeSpecifier(CanBeBitfield)))) {
4040 TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration;
4041 if (Tok.isNot(tok::semi)) {
4042 // A semicolon was missing after this declaration. Diagnose and recover.
4043 ExpectAndConsume(tok::semi, diag::err_expected_after, "enum");
4045 Tok.setKind(tok::semi);
4048 TUK = Sema::TUK_Reference;
4051 // If this is an elaborated type specifier, and we delayed
4052 // diagnostics before, just merge them into the current pool.
4053 if (TUK == Sema::TUK_Reference && shouldDelayDiagsInTag) {
4054 diagsFromTag.redelay();
4057 MultiTemplateParamsArg TParams;
4058 if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate &&
4059 TUK != Sema::TUK_Reference) {
4060 if (!getLangOpts().CPlusPlus11 || !SS.isSet()) {
4061 // Skip the rest of this declarator, up until the comma or semicolon.
4062 Diag(Tok, diag::err_enum_template);
4063 SkipUntil(tok::comma, StopAtSemi);
4067 if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
4068 // Enumerations can't be explicitly instantiated.
4069 DS.SetTypeSpecError();
4070 Diag(StartLoc, diag::err_explicit_instantiation_enum);
4074 assert(TemplateInfo.TemplateParams && "no template parameters");
4075 TParams = MultiTemplateParamsArg(TemplateInfo.TemplateParams->data(),
4076 TemplateInfo.TemplateParams->size());
4079 if (TUK == Sema::TUK_Reference)
4080 ProhibitAttributes(attrs);
4082 if (!Name && TUK != Sema::TUK_Definition) {
4083 Diag(Tok, diag::err_enumerator_unnamed_no_def);
4085 // Skip the rest of this declarator, up until the comma or semicolon.
4086 SkipUntil(tok::comma, StopAtSemi);
4090 stripTypeAttributesOffDeclSpec(attrs, DS, TUK);
4092 Sema::SkipBodyInfo SkipBody;
4093 if (!Name && TUK == Sema::TUK_Definition && Tok.is(tok::l_brace) &&
4094 NextToken().is(tok::identifier))
4095 SkipBody = Actions.shouldSkipAnonEnumBody(getCurScope(),
4096 NextToken().getIdentifierInfo(),
4097 NextToken().getLocation());
4100 bool IsDependent = false;
4101 const char *PrevSpec = nullptr;
4103 Decl *TagDecl = Actions.ActOnTag(getCurScope(), DeclSpec::TST_enum, TUK,
4104 StartLoc, SS, Name, NameLoc, attrs.getList(),
4105 AS, DS.getModulePrivateSpecLoc(), TParams,
4106 Owned, IsDependent, ScopedEnumKWLoc,
4107 IsScopedUsingClassTag, BaseType,
4108 DSC == DSC_type_specifier, &SkipBody);
4110 if (SkipBody.ShouldSkip) {
4111 assert(TUK == Sema::TUK_Definition && "can only skip a definition");
4113 BalancedDelimiterTracker T(*this, tok::l_brace);
4117 if (DS.SetTypeSpecType(DeclSpec::TST_enum, StartLoc,
4118 NameLoc.isValid() ? NameLoc : StartLoc,
4119 PrevSpec, DiagID, TagDecl, Owned,
4120 Actions.getASTContext().getPrintingPolicy()))
4121 Diag(StartLoc, DiagID) << PrevSpec;
4126 // This enum has a dependent nested-name-specifier. Handle it as a
4129 DS.SetTypeSpecError();
4130 Diag(Tok, diag::err_expected_type_name_after_typename);
4134 TypeResult Type = Actions.ActOnDependentTag(
4135 getCurScope(), DeclSpec::TST_enum, TUK, SS, Name, StartLoc, NameLoc);
4136 if (Type.isInvalid()) {
4137 DS.SetTypeSpecError();
4141 if (DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc,
4142 NameLoc.isValid() ? NameLoc : StartLoc,
4143 PrevSpec, DiagID, Type.get(),
4144 Actions.getASTContext().getPrintingPolicy()))
4145 Diag(StartLoc, DiagID) << PrevSpec;
4151 // The action failed to produce an enumeration tag. If this is a
4152 // definition, consume the entire definition.
4153 if (Tok.is(tok::l_brace) && TUK != Sema::TUK_Reference) {
4155 SkipUntil(tok::r_brace, StopAtSemi);
4158 DS.SetTypeSpecError();
4162 if (Tok.is(tok::l_brace) && TUK != Sema::TUK_Reference)
4163 ParseEnumBody(StartLoc, TagDecl);
4165 if (DS.SetTypeSpecType(DeclSpec::TST_enum, StartLoc,
4166 NameLoc.isValid() ? NameLoc : StartLoc,
4167 PrevSpec, DiagID, TagDecl, Owned,
4168 Actions.getASTContext().getPrintingPolicy()))
4169 Diag(StartLoc, DiagID) << PrevSpec;
4172 /// ParseEnumBody - Parse a {} enclosed enumerator-list.
4173 /// enumerator-list:
4175 /// enumerator-list ',' enumerator
4177 /// enumeration-constant attributes[opt]
4178 /// enumeration-constant attributes[opt] '=' constant-expression
4179 /// enumeration-constant:
4182 void Parser::ParseEnumBody(SourceLocation StartLoc, Decl *EnumDecl) {
4183 // Enter the scope of the enum body and start the definition.
4184 ParseScope EnumScope(this, Scope::DeclScope | Scope::EnumScope);
4185 Actions.ActOnTagStartDefinition(getCurScope(), EnumDecl);
4187 BalancedDelimiterTracker T(*this, tok::l_brace);
4190 // C does not allow an empty enumerator-list, C++ does [dcl.enum].
4191 if (Tok.is(tok::r_brace) && !getLangOpts().CPlusPlus)
4192 Diag(Tok, diag::err_empty_enum);
4194 SmallVector<Decl *, 32> EnumConstantDecls;
4195 SmallVector<SuppressAccessChecks, 32> EnumAvailabilityDiags;
4197 Decl *LastEnumConstDecl = nullptr;
4199 // Parse the enumerator-list.
4200 while (Tok.isNot(tok::r_brace)) {
4201 // Parse enumerator. If failed, try skipping till the start of the next
4202 // enumerator definition.
4203 if (Tok.isNot(tok::identifier)) {
4204 Diag(Tok.getLocation(), diag::err_expected) << tok::identifier;
4205 if (SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch) &&
4206 TryConsumeToken(tok::comma))
4210 IdentifierInfo *Ident = Tok.getIdentifierInfo();
4211 SourceLocation IdentLoc = ConsumeToken();
4213 // If attributes exist after the enumerator, parse them.
4214 ParsedAttributesWithRange attrs(AttrFactory);
4215 MaybeParseGNUAttributes(attrs);
4216 ProhibitAttributes(attrs); // GNU-style attributes are prohibited.
4217 if (getLangOpts().CPlusPlus11 && isCXX11AttributeSpecifier()) {
4218 if (!getLangOpts().CPlusPlus1z)
4219 Diag(Tok.getLocation(), diag::warn_cxx14_compat_attribute)
4220 << 1 /*enumerator*/;
4221 ParseCXX11Attributes(attrs);
4224 SourceLocation EqualLoc;
4225 ExprResult AssignedVal;
4226 EnumAvailabilityDiags.emplace_back(*this);
4228 if (TryConsumeToken(tok::equal, EqualLoc)) {
4229 AssignedVal = ParseConstantExpression();
4230 if (AssignedVal.isInvalid())
4231 SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch);
4234 // Install the enumerator constant into EnumDecl.
4235 Decl *EnumConstDecl = Actions.ActOnEnumConstant(getCurScope(), EnumDecl,
4238 attrs.getList(), EqualLoc,
4240 EnumAvailabilityDiags.back().done();
4242 EnumConstantDecls.push_back(EnumConstDecl);
4243 LastEnumConstDecl = EnumConstDecl;
4245 if (Tok.is(tok::identifier)) {
4246 // We're missing a comma between enumerators.
4247 SourceLocation Loc = getEndOfPreviousToken();
4248 Diag(Loc, diag::err_enumerator_list_missing_comma)
4249 << FixItHint::CreateInsertion(Loc, ", ");
4253 // Emumerator definition must be finished, only comma or r_brace are
4255 SourceLocation CommaLoc;
4256 if (Tok.isNot(tok::r_brace) && !TryConsumeToken(tok::comma, CommaLoc)) {
4257 if (EqualLoc.isValid())
4258 Diag(Tok.getLocation(), diag::err_expected_either) << tok::r_brace
4261 Diag(Tok.getLocation(), diag::err_expected_end_of_enumerator);
4262 if (SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch)) {
4263 if (TryConsumeToken(tok::comma, CommaLoc))
4270 // If comma is followed by r_brace, emit appropriate warning.
4271 if (Tok.is(tok::r_brace) && CommaLoc.isValid()) {
4272 if (!getLangOpts().C99 && !getLangOpts().CPlusPlus11)
4273 Diag(CommaLoc, getLangOpts().CPlusPlus ?
4274 diag::ext_enumerator_list_comma_cxx :
4275 diag::ext_enumerator_list_comma_c)
4276 << FixItHint::CreateRemoval(CommaLoc);
4277 else if (getLangOpts().CPlusPlus11)
4278 Diag(CommaLoc, diag::warn_cxx98_compat_enumerator_list_comma)
4279 << FixItHint::CreateRemoval(CommaLoc);
4287 // If attributes exist after the identifier list, parse them.
4288 ParsedAttributes attrs(AttrFactory);
4289 MaybeParseGNUAttributes(attrs);
4291 Actions.ActOnEnumBody(StartLoc, T.getRange(),
4292 EnumDecl, EnumConstantDecls,
4296 // Now handle enum constant availability diagnostics.
4297 assert(EnumConstantDecls.size() == EnumAvailabilityDiags.size());
4298 for (size_t i = 0, e = EnumConstantDecls.size(); i != e; ++i) {
4299 ParsingDeclRAIIObject PD(*this, ParsingDeclRAIIObject::NoParent);
4300 EnumAvailabilityDiags[i].redelay();
4301 PD.complete(EnumConstantDecls[i]);
4305 Actions.ActOnTagFinishDefinition(getCurScope(), EnumDecl, T.getRange());
4307 // The next token must be valid after an enum definition. If not, a ';'
4308 // was probably forgotten.
4309 bool CanBeBitfield = getCurScope()->getFlags() & Scope::ClassScope;
4310 if (!isValidAfterTypeSpecifier(CanBeBitfield)) {
4311 ExpectAndConsume(tok::semi, diag::err_expected_after, "enum");
4312 // Push this token back into the preprocessor and change our current token
4313 // to ';' so that the rest of the code recovers as though there were an
4314 // ';' after the definition.
4316 Tok.setKind(tok::semi);
4320 /// isKnownToBeTypeSpecifier - Return true if we know that the specified token
4321 /// is definitely a type-specifier. Return false if it isn't part of a type
4322 /// specifier or if we're not sure.
4323 bool Parser::isKnownToBeTypeSpecifier(const Token &Tok) const {
4324 switch (Tok.getKind()) {
4325 default: return false;
4329 case tok::kw___int64:
4330 case tok::kw___int128:
4331 case tok::kw_signed:
4332 case tok::kw_unsigned:
4333 case tok::kw__Complex:
4334 case tok::kw__Imaginary:
4337 case tok::kw_wchar_t:
4338 case tok::kw_char16_t:
4339 case tok::kw_char32_t:
4343 case tok::kw_double:
4344 case tok::kw___float128:
4347 case tok::kw__Decimal32:
4348 case tok::kw__Decimal64:
4349 case tok::kw__Decimal128:
4350 case tok::kw___vector:
4351 #define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
4352 #include "clang/Basic/OpenCLImageTypes.def"
4354 // struct-or-union-specifier (C99) or class-specifier (C++)
4356 case tok::kw_struct:
4357 case tok::kw___interface:
4363 case tok::annot_typename:
4368 /// isTypeSpecifierQualifier - Return true if the current token could be the
4369 /// start of a specifier-qualifier-list.
4370 bool Parser::isTypeSpecifierQualifier() {
4371 switch (Tok.getKind()) {
4372 default: return false;
4374 case tok::identifier: // foo::bar
4375 if (TryAltiVecVectorToken())
4378 case tok::kw_typename: // typename T::type
4379 // Annotate typenames and C++ scope specifiers. If we get one, just
4380 // recurse to handle whatever we get.
4381 if (TryAnnotateTypeOrScopeToken())
4383 if (Tok.is(tok::identifier))
4385 return isTypeSpecifierQualifier();
4387 case tok::coloncolon: // ::foo::bar
4388 if (NextToken().is(tok::kw_new) || // ::new
4389 NextToken().is(tok::kw_delete)) // ::delete
4392 if (TryAnnotateTypeOrScopeToken())
4394 return isTypeSpecifierQualifier();
4396 // GNU attributes support.
4397 case tok::kw___attribute:
4398 // GNU typeof support.
4399 case tok::kw_typeof:
4404 case tok::kw___int64:
4405 case tok::kw___int128:
4406 case tok::kw_signed:
4407 case tok::kw_unsigned:
4408 case tok::kw__Complex:
4409 case tok::kw__Imaginary:
4412 case tok::kw_wchar_t:
4413 case tok::kw_char16_t:
4414 case tok::kw_char32_t:
4418 case tok::kw_double:
4419 case tok::kw___float128:
4422 case tok::kw__Decimal32:
4423 case tok::kw__Decimal64:
4424 case tok::kw__Decimal128:
4425 case tok::kw___vector:
4426 #define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
4427 #include "clang/Basic/OpenCLImageTypes.def"
4429 // struct-or-union-specifier (C99) or class-specifier (C++)
4431 case tok::kw_struct:
4432 case tok::kw___interface:
4439 case tok::kw_volatile:
4440 case tok::kw_restrict:
4442 // Debugger support.
4443 case tok::kw___unknown_anytype:
4446 case tok::annot_typename:
4449 // GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
4451 return getLangOpts().ObjC1;
4453 case tok::kw___cdecl:
4454 case tok::kw___stdcall:
4455 case tok::kw___fastcall:
4456 case tok::kw___thiscall:
4457 case tok::kw___regcall:
4458 case tok::kw___vectorcall:
4460 case tok::kw___ptr64:
4461 case tok::kw___ptr32:
4462 case tok::kw___pascal:
4463 case tok::kw___unaligned:
4465 case tok::kw__Nonnull:
4466 case tok::kw__Nullable:
4467 case tok::kw__Null_unspecified:
4469 case tok::kw___kindof:
4471 case tok::kw___private:
4472 case tok::kw___local:
4473 case tok::kw___global:
4474 case tok::kw___constant:
4475 case tok::kw___generic:
4476 case tok::kw___read_only:
4477 case tok::kw___read_write:
4478 case tok::kw___write_only:
4483 case tok::kw__Atomic:
4488 /// isDeclarationSpecifier() - Return true if the current token is part of a
4489 /// declaration specifier.
4491 /// \param DisambiguatingWithExpression True to indicate that the purpose of
4492 /// this check is to disambiguate between an expression and a declaration.
4493 bool Parser::isDeclarationSpecifier(bool DisambiguatingWithExpression) {
4494 switch (Tok.getKind()) {
4495 default: return false;
4498 return getLangOpts().OpenCL && (getLangOpts().OpenCLVersion >= 200);
4500 case tok::identifier: // foo::bar
4501 // Unfortunate hack to support "Class.factoryMethod" notation.
4502 if (getLangOpts().ObjC1 && NextToken().is(tok::period))
4504 if (TryAltiVecVectorToken())
4507 case tok::kw_decltype: // decltype(T())::type
4508 case tok::kw_typename: // typename T::type
4509 // Annotate typenames and C++ scope specifiers. If we get one, just
4510 // recurse to handle whatever we get.
4511 if (TryAnnotateTypeOrScopeToken())
4513 if (Tok.is(tok::identifier))
4516 // If we're in Objective-C and we have an Objective-C class type followed
4517 // by an identifier and then either ':' or ']', in a place where an
4518 // expression is permitted, then this is probably a class message send
4519 // missing the initial '['. In this case, we won't consider this to be
4520 // the start of a declaration.
4521 if (DisambiguatingWithExpression &&
4522 isStartOfObjCClassMessageMissingOpenBracket())
4525 return isDeclarationSpecifier();
4527 case tok::coloncolon: // ::foo::bar
4528 if (NextToken().is(tok::kw_new) || // ::new
4529 NextToken().is(tok::kw_delete)) // ::delete
4532 // Annotate typenames and C++ scope specifiers. If we get one, just
4533 // recurse to handle whatever we get.
4534 if (TryAnnotateTypeOrScopeToken())
4536 return isDeclarationSpecifier();
4538 // storage-class-specifier
4539 case tok::kw_typedef:
4540 case tok::kw_extern:
4541 case tok::kw___private_extern__:
4542 case tok::kw_static:
4544 case tok::kw___auto_type:
4545 case tok::kw_register:
4546 case tok::kw___thread:
4547 case tok::kw_thread_local:
4548 case tok::kw__Thread_local:
4551 case tok::kw___module_private__:
4554 case tok::kw___unknown_anytype:
4559 case tok::kw___int64:
4560 case tok::kw___int128:
4561 case tok::kw_signed:
4562 case tok::kw_unsigned:
4563 case tok::kw__Complex:
4564 case tok::kw__Imaginary:
4567 case tok::kw_wchar_t:
4568 case tok::kw_char16_t:
4569 case tok::kw_char32_t:
4574 case tok::kw_double:
4575 case tok::kw___float128:
4578 case tok::kw__Decimal32:
4579 case tok::kw__Decimal64:
4580 case tok::kw__Decimal128:
4581 case tok::kw___vector:
4583 // struct-or-union-specifier (C99) or class-specifier (C++)
4585 case tok::kw_struct:
4587 case tok::kw___interface:
4593 case tok::kw_volatile:
4594 case tok::kw_restrict:
4596 // function-specifier
4597 case tok::kw_inline:
4598 case tok::kw_virtual:
4599 case tok::kw_explicit:
4600 case tok::kw__Noreturn:
4602 // alignment-specifier
4603 case tok::kw__Alignas:
4606 case tok::kw_friend:
4608 // static_assert-declaration
4609 case tok::kw__Static_assert:
4611 // GNU typeof support.
4612 case tok::kw_typeof:
4615 case tok::kw___attribute:
4617 // C++11 decltype and constexpr.
4618 case tok::annot_decltype:
4619 case tok::kw_constexpr:
4621 // C++ Concepts TS - concept
4622 case tok::kw_concept:
4625 case tok::kw__Atomic:
4628 // GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
4630 return getLangOpts().ObjC1;
4633 case tok::annot_typename:
4634 return !DisambiguatingWithExpression ||
4635 !isStartOfObjCClassMessageMissingOpenBracket();
4637 case tok::kw___declspec:
4638 case tok::kw___cdecl:
4639 case tok::kw___stdcall:
4640 case tok::kw___fastcall:
4641 case tok::kw___thiscall:
4642 case tok::kw___regcall:
4643 case tok::kw___vectorcall:
4645 case tok::kw___sptr:
4646 case tok::kw___uptr:
4647 case tok::kw___ptr64:
4648 case tok::kw___ptr32:
4649 case tok::kw___forceinline:
4650 case tok::kw___pascal:
4651 case tok::kw___unaligned:
4653 case tok::kw__Nonnull:
4654 case tok::kw__Nullable:
4655 case tok::kw__Null_unspecified:
4657 case tok::kw___kindof:
4659 case tok::kw___private:
4660 case tok::kw___local:
4661 case tok::kw___global:
4662 case tok::kw___constant:
4663 case tok::kw___generic:
4664 case tok::kw___read_only:
4665 case tok::kw___read_write:
4666 case tok::kw___write_only:
4667 #define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
4668 #include "clang/Basic/OpenCLImageTypes.def"
4674 bool Parser::isConstructorDeclarator(bool IsUnqualified) {
4675 TentativeParsingAction TPA(*this);
4677 // Parse the C++ scope specifier.
4679 if (ParseOptionalCXXScopeSpecifier(SS, nullptr,
4680 /*EnteringContext=*/true)) {
4685 // Parse the constructor name.
4686 if (Tok.isOneOf(tok::identifier, tok::annot_template_id)) {
4687 // We already know that we have a constructor name; just consume
4695 // Current class name must be followed by a left parenthesis.
4696 if (Tok.isNot(tok::l_paren)) {
4702 // A right parenthesis, or ellipsis followed by a right parenthesis signals
4703 // that we have a constructor.
4704 if (Tok.is(tok::r_paren) ||
4705 (Tok.is(tok::ellipsis) && NextToken().is(tok::r_paren))) {
4710 // A C++11 attribute here signals that we have a constructor, and is an
4711 // attribute on the first constructor parameter.
4712 if (getLangOpts().CPlusPlus11 &&
4713 isCXX11AttributeSpecifier(/*Disambiguate*/ false,
4714 /*OuterMightBeMessageSend*/ true)) {
4719 // If we need to, enter the specified scope.
4720 DeclaratorScopeObj DeclScopeObj(*this, SS);
4721 if (SS.isSet() && Actions.ShouldEnterDeclaratorScope(getCurScope(), SS))
4722 DeclScopeObj.EnterDeclaratorScope();
4724 // Optionally skip Microsoft attributes.
4725 ParsedAttributes Attrs(AttrFactory);
4726 MaybeParseMicrosoftAttributes(Attrs);
4728 // Check whether the next token(s) are part of a declaration
4729 // specifier, in which case we have the start of a parameter and,
4730 // therefore, we know that this is a constructor.
4731 bool IsConstructor = false;
4732 if (isDeclarationSpecifier())
4733 IsConstructor = true;
4734 else if (Tok.is(tok::identifier) ||
4735 (Tok.is(tok::annot_cxxscope) && NextToken().is(tok::identifier))) {
4736 // We've seen "C ( X" or "C ( X::Y", but "X" / "X::Y" is not a type.
4737 // This might be a parenthesized member name, but is more likely to
4738 // be a constructor declaration with an invalid argument type. Keep
4740 if (Tok.is(tok::annot_cxxscope))
4744 // If this is not a constructor, we must be parsing a declarator,
4745 // which must have one of the following syntactic forms (see the
4746 // grammar extract at the start of ParseDirectDeclarator):
4747 switch (Tok.getKind()) {
4752 // C(X [ [attribute]]);
4753 case tok::coloncolon:
4756 // Assume this isn't a constructor, rather than assuming it's a
4757 // constructor with an unnamed parameter of an ill-formed type.
4762 if (NextToken().is(tok::colon) || NextToken().is(tok::kw_try)) {
4763 // Assume these were meant to be constructors:
4764 // C(X) : (the name of a bit-field cannot be parenthesized).
4765 // C(X) try (this is otherwise ill-formed).
4766 IsConstructor = true;
4768 if (NextToken().is(tok::semi) || NextToken().is(tok::l_brace)) {
4769 // If we have a constructor name within the class definition,
4770 // assume these were meant to be constructors:
4773 // ... because otherwise we would be declaring a non-static data
4774 // member that is ill-formed because it's of the same type as its
4775 // surrounding class.
4777 // FIXME: We can actually do this whether or not the name is qualified,
4778 // because if it is qualified in this context it must be being used as
4779 // a constructor name. However, we do not implement that rule correctly
4780 // currently, so we're somewhat conservative here.
4781 IsConstructor = IsUnqualified;
4786 IsConstructor = true;
4792 return IsConstructor;
4795 /// ParseTypeQualifierListOpt
4796 /// type-qualifier-list: [C99 6.7.5]
4798 /// [vendor] attributes
4799 /// [ only if AttrReqs & AR_VendorAttributesParsed ]
4800 /// type-qualifier-list type-qualifier
4801 /// [vendor] type-qualifier-list attributes
4802 /// [ only if AttrReqs & AR_VendorAttributesParsed ]
4803 /// [C++0x] attribute-specifier[opt] is allowed before cv-qualifier-seq
4804 /// [ only if AttReqs & AR_CXX11AttributesParsed ]
4805 /// Note: vendor can be GNU, MS, etc and can be explicitly controlled via
4806 /// AttrRequirements bitmask values.
4807 void Parser::ParseTypeQualifierListOpt(DeclSpec &DS, unsigned AttrReqs,
4809 bool IdentifierRequired) {
4810 if (getLangOpts().CPlusPlus11 && (AttrReqs & AR_CXX11AttributesParsed) &&
4811 isCXX11AttributeSpecifier()) {
4812 ParsedAttributesWithRange attrs(AttrFactory);
4813 ParseCXX11Attributes(attrs);
4814 DS.takeAttributesFrom(attrs);
4817 SourceLocation EndLoc;
4820 bool isInvalid = false;
4821 const char *PrevSpec = nullptr;
4822 unsigned DiagID = 0;
4823 SourceLocation Loc = Tok.getLocation();
4825 switch (Tok.getKind()) {
4826 case tok::code_completion:
4827 Actions.CodeCompleteTypeQualifiers(DS);
4828 return cutOffParsing();
4831 isInvalid = DS.SetTypeQual(DeclSpec::TQ_const , Loc, PrevSpec, DiagID,
4834 case tok::kw_volatile:
4835 isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
4838 case tok::kw_restrict:
4839 isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
4842 case tok::kw__Atomic:
4844 goto DoneWithTypeQuals;
4845 isInvalid = DS.SetTypeQual(DeclSpec::TQ_atomic, Loc, PrevSpec, DiagID,
4849 // OpenCL qualifiers:
4850 case tok::kw___private:
4851 case tok::kw___global:
4852 case tok::kw___local:
4853 case tok::kw___constant:
4854 case tok::kw___generic:
4855 case tok::kw___read_only:
4856 case tok::kw___write_only:
4857 case tok::kw___read_write:
4858 ParseOpenCLQualifiers(DS.getAttributes());
4861 case tok::kw___unaligned:
4862 isInvalid = DS.SetTypeQual(DeclSpec::TQ_unaligned, Loc, PrevSpec, DiagID,
4865 case tok::kw___uptr:
4866 // GNU libc headers in C mode use '__uptr' as an identifer which conflicts
4867 // with the MS modifier keyword.
4868 if ((AttrReqs & AR_DeclspecAttributesParsed) && !getLangOpts().CPlusPlus &&
4869 IdentifierRequired && DS.isEmpty() && NextToken().is(tok::semi)) {
4870 if (TryKeywordIdentFallback(false))
4873 case tok::kw___sptr:
4875 case tok::kw___ptr64:
4876 case tok::kw___ptr32:
4877 case tok::kw___cdecl:
4878 case tok::kw___stdcall:
4879 case tok::kw___fastcall:
4880 case tok::kw___thiscall:
4881 case tok::kw___regcall:
4882 case tok::kw___vectorcall:
4883 if (AttrReqs & AR_DeclspecAttributesParsed) {
4884 ParseMicrosoftTypeAttributes(DS.getAttributes());
4887 goto DoneWithTypeQuals;
4888 case tok::kw___pascal:
4889 if (AttrReqs & AR_VendorAttributesParsed) {
4890 ParseBorlandTypeAttributes(DS.getAttributes());
4893 goto DoneWithTypeQuals;
4895 // Nullability type specifiers.
4896 case tok::kw__Nonnull:
4897 case tok::kw__Nullable:
4898 case tok::kw__Null_unspecified:
4899 ParseNullabilityTypeSpecifiers(DS.getAttributes());
4902 // Objective-C 'kindof' types.
4903 case tok::kw___kindof:
4904 DS.getAttributes().addNew(Tok.getIdentifierInfo(), Loc, nullptr, Loc,
4905 nullptr, 0, AttributeList::AS_Keyword);
4906 (void)ConsumeToken();
4909 case tok::kw___attribute:
4910 if (AttrReqs & AR_GNUAttributesParsedAndRejected)
4911 // When GNU attributes are expressly forbidden, diagnose their usage.
4912 Diag(Tok, diag::err_attributes_not_allowed);
4914 // Parse the attributes even if they are rejected to ensure that error
4915 // recovery is graceful.
4916 if (AttrReqs & AR_GNUAttributesParsed ||
4917 AttrReqs & AR_GNUAttributesParsedAndRejected) {
4918 ParseGNUAttributes(DS.getAttributes());
4919 continue; // do *not* consume the next token!
4921 // otherwise, FALL THROUGH!
4924 // If this is not a type-qualifier token, we're done reading type
4925 // qualifiers. First verify that DeclSpec's are consistent.
4926 DS.Finish(Actions, Actions.getASTContext().getPrintingPolicy());
4927 if (EndLoc.isValid())
4928 DS.SetRangeEnd(EndLoc);
4932 // If the specifier combination wasn't legal, issue a diagnostic.
4934 assert(PrevSpec && "Method did not return previous specifier!");
4935 Diag(Tok, DiagID) << PrevSpec;
4937 EndLoc = ConsumeToken();
4941 /// ParseDeclarator - Parse and verify a newly-initialized declarator.
4943 void Parser::ParseDeclarator(Declarator &D) {
4944 /// This implements the 'declarator' production in the C grammar, then checks
4945 /// for well-formedness and issues diagnostics.
4946 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
4949 static bool isPtrOperatorToken(tok::TokenKind Kind, const LangOptions &Lang,
4950 unsigned TheContext) {
4951 if (Kind == tok::star || Kind == tok::caret)
4954 if ((Kind == tok::kw_pipe) && Lang.OpenCL && (Lang.OpenCLVersion >= 200))
4957 if (!Lang.CPlusPlus)
4960 if (Kind == tok::amp)
4963 // We parse rvalue refs in C++03, because otherwise the errors are scary.
4964 // But we must not parse them in conversion-type-ids and new-type-ids, since
4965 // those can be legitimately followed by a && operator.
4966 // (The same thing can in theory happen after a trailing-return-type, but
4967 // since those are a C++11 feature, there is no rejects-valid issue there.)
4968 if (Kind == tok::ampamp)
4969 return Lang.CPlusPlus11 || (TheContext != Declarator::ConversionIdContext &&
4970 TheContext != Declarator::CXXNewContext);
4975 // Indicates whether the given declarator is a pipe declarator.
4976 static bool isPipeDeclerator(const Declarator &D) {
4977 const unsigned NumTypes = D.getNumTypeObjects();
4979 for (unsigned Idx = 0; Idx != NumTypes; ++Idx)
4980 if (DeclaratorChunk::Pipe == D.getTypeObject(Idx).Kind)
4986 /// ParseDeclaratorInternal - Parse a C or C++ declarator. The direct-declarator
4987 /// is parsed by the function passed to it. Pass null, and the direct-declarator
4988 /// isn't parsed at all, making this function effectively parse the C++
4989 /// ptr-operator production.
4991 /// If the grammar of this construct is extended, matching changes must also be
4992 /// made to TryParseDeclarator and MightBeDeclarator, and possibly to
4993 /// isConstructorDeclarator.
4995 /// declarator: [C99 6.7.5] [C++ 8p4, dcl.decl]
4996 /// [C] pointer[opt] direct-declarator
4997 /// [C++] direct-declarator
4998 /// [C++] ptr-operator declarator
5000 /// pointer: [C99 6.7.5]
5001 /// '*' type-qualifier-list[opt]
5002 /// '*' type-qualifier-list[opt] pointer
5005 /// '*' cv-qualifier-seq[opt]
5008 /// [GNU] '&' restrict[opt] attributes[opt]
5009 /// [GNU?] '&&' restrict[opt] attributes[opt]
5010 /// '::'[opt] nested-name-specifier '*' cv-qualifier-seq[opt]
5011 void Parser::ParseDeclaratorInternal(Declarator &D,
5012 DirectDeclParseFunction DirectDeclParser) {
5013 if (Diags.hasAllExtensionsSilenced())
5016 // C++ member pointers start with a '::' or a nested-name.
5017 // Member pointers get special handling, since there's no place for the
5018 // scope spec in the generic path below.
5019 if (getLangOpts().CPlusPlus &&
5020 (Tok.is(tok::coloncolon) || Tok.is(tok::kw_decltype) ||
5021 (Tok.is(tok::identifier) &&
5022 (NextToken().is(tok::coloncolon) || NextToken().is(tok::less))) ||
5023 Tok.is(tok::annot_cxxscope))) {
5024 bool EnteringContext = D.getContext() == Declarator::FileContext ||
5025 D.getContext() == Declarator::MemberContext;
5027 ParseOptionalCXXScopeSpecifier(SS, nullptr, EnteringContext);
5029 if (SS.isNotEmpty()) {
5030 if (Tok.isNot(tok::star)) {
5031 // The scope spec really belongs to the direct-declarator.
5032 if (D.mayHaveIdentifier())
5033 D.getCXXScopeSpec() = SS;
5035 AnnotateScopeToken(SS, true);
5037 if (DirectDeclParser)
5038 (this->*DirectDeclParser)(D);
5042 SourceLocation Loc = ConsumeToken();
5044 DeclSpec DS(AttrFactory);
5045 ParseTypeQualifierListOpt(DS);
5046 D.ExtendWithDeclSpec(DS);
5048 // Recurse to parse whatever is left.
5049 ParseDeclaratorInternal(D, DirectDeclParser);
5051 // Sema will have to catch (syntactically invalid) pointers into global
5052 // scope. It has to catch pointers into namespace scope anyway.
5053 D.AddTypeInfo(DeclaratorChunk::getMemberPointer(SS,DS.getTypeQualifiers(),
5056 /* Don't replace range end. */SourceLocation());
5061 tok::TokenKind Kind = Tok.getKind();
5063 if (D.getDeclSpec().isTypeSpecPipe() && !isPipeDeclerator(D)) {
5064 DeclSpec DS(AttrFactory);
5065 ParseTypeQualifierListOpt(DS);
5068 DeclaratorChunk::getPipe(DS.getTypeQualifiers(), DS.getPipeLoc()),
5069 DS.getAttributes(), SourceLocation());
5072 // Not a pointer, C++ reference, or block.
5073 if (!isPtrOperatorToken(Kind, getLangOpts(), D.getContext())) {
5074 if (DirectDeclParser)
5075 (this->*DirectDeclParser)(D);
5079 // Otherwise, '*' -> pointer, '^' -> block, '&' -> lvalue reference,
5080 // '&&' -> rvalue reference
5081 SourceLocation Loc = ConsumeToken(); // Eat the *, ^, & or &&.
5084 if (Kind == tok::star || Kind == tok::caret) {
5086 DeclSpec DS(AttrFactory);
5088 // GNU attributes are not allowed here in a new-type-id, but Declspec and
5089 // C++11 attributes are allowed.
5090 unsigned Reqs = AR_CXX11AttributesParsed | AR_DeclspecAttributesParsed |
5091 ((D.getContext() != Declarator::CXXNewContext)
5092 ? AR_GNUAttributesParsed
5093 : AR_GNUAttributesParsedAndRejected);
5094 ParseTypeQualifierListOpt(DS, Reqs, true, !D.mayOmitIdentifier());
5095 D.ExtendWithDeclSpec(DS);
5097 // Recursively parse the declarator.
5098 ParseDeclaratorInternal(D, DirectDeclParser);
5099 if (Kind == tok::star)
5100 // Remember that we parsed a pointer type, and remember the type-quals.
5101 D.AddTypeInfo(DeclaratorChunk::getPointer(DS.getTypeQualifiers(), Loc,
5102 DS.getConstSpecLoc(),
5103 DS.getVolatileSpecLoc(),
5104 DS.getRestrictSpecLoc(),
5105 DS.getAtomicSpecLoc(),
5106 DS.getUnalignedSpecLoc()),
5110 // Remember that we parsed a Block type, and remember the type-quals.
5111 D.AddTypeInfo(DeclaratorChunk::getBlockPointer(DS.getTypeQualifiers(),
5117 DeclSpec DS(AttrFactory);
5119 // Complain about rvalue references in C++03, but then go on and build
5121 if (Kind == tok::ampamp)
5122 Diag(Loc, getLangOpts().CPlusPlus11 ?
5123 diag::warn_cxx98_compat_rvalue_reference :
5124 diag::ext_rvalue_reference);
5126 // GNU-style and C++11 attributes are allowed here, as is restrict.
5127 ParseTypeQualifierListOpt(DS);
5128 D.ExtendWithDeclSpec(DS);
5130 // C++ 8.3.2p1: cv-qualified references are ill-formed except when the
5131 // cv-qualifiers are introduced through the use of a typedef or of a
5132 // template type argument, in which case the cv-qualifiers are ignored.
5133 if (DS.getTypeQualifiers() != DeclSpec::TQ_unspecified) {
5134 if (DS.getTypeQualifiers() & DeclSpec::TQ_const)
5135 Diag(DS.getConstSpecLoc(),
5136 diag::err_invalid_reference_qualifier_application) << "const";
5137 if (DS.getTypeQualifiers() & DeclSpec::TQ_volatile)
5138 Diag(DS.getVolatileSpecLoc(),
5139 diag::err_invalid_reference_qualifier_application) << "volatile";
5140 // 'restrict' is permitted as an extension.
5141 if (DS.getTypeQualifiers() & DeclSpec::TQ_atomic)
5142 Diag(DS.getAtomicSpecLoc(),
5143 diag::err_invalid_reference_qualifier_application) << "_Atomic";
5146 // Recursively parse the declarator.
5147 ParseDeclaratorInternal(D, DirectDeclParser);
5149 if (D.getNumTypeObjects() > 0) {
5150 // C++ [dcl.ref]p4: There shall be no references to references.
5151 DeclaratorChunk& InnerChunk = D.getTypeObject(D.getNumTypeObjects() - 1);
5152 if (InnerChunk.Kind == DeclaratorChunk::Reference) {
5153 if (const IdentifierInfo *II = D.getIdentifier())
5154 Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference)
5157 Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference)
5160 // Once we've complained about the reference-to-reference, we
5161 // can go ahead and build the (technically ill-formed)
5162 // declarator: reference collapsing will take care of it.
5166 // Remember that we parsed a reference type.
5167 D.AddTypeInfo(DeclaratorChunk::getReference(DS.getTypeQualifiers(), Loc,
5174 // When correcting from misplaced brackets before the identifier, the location
5175 // is saved inside the declarator so that other diagnostic messages can use
5176 // them. This extracts and returns that location, or returns the provided
5177 // location if a stored location does not exist.
5178 static SourceLocation getMissingDeclaratorIdLoc(Declarator &D,
5179 SourceLocation Loc) {
5180 if (D.getName().StartLocation.isInvalid() &&
5181 D.getName().EndLocation.isValid())
5182 return D.getName().EndLocation;
5187 /// ParseDirectDeclarator
5188 /// direct-declarator: [C99 6.7.5]
5189 /// [C99] identifier
5190 /// '(' declarator ')'
5191 /// [GNU] '(' attributes declarator ')'
5192 /// [C90] direct-declarator '[' constant-expression[opt] ']'
5193 /// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']'
5194 /// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']'
5195 /// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']'
5196 /// [C99] direct-declarator '[' type-qual-list[opt] '*' ']'
5197 /// [C++11] direct-declarator '[' constant-expression[opt] ']'
5198 /// attribute-specifier-seq[opt]
5199 /// direct-declarator '(' parameter-type-list ')'
5200 /// direct-declarator '(' identifier-list[opt] ')'
5201 /// [GNU] direct-declarator '(' parameter-forward-declarations
5202 /// parameter-type-list[opt] ')'
5203 /// [C++] direct-declarator '(' parameter-declaration-clause ')'
5204 /// cv-qualifier-seq[opt] exception-specification[opt]
5205 /// [C++11] direct-declarator '(' parameter-declaration-clause ')'
5206 /// attribute-specifier-seq[opt] cv-qualifier-seq[opt]
5207 /// ref-qualifier[opt] exception-specification[opt]
5208 /// [C++] declarator-id
5209 /// [C++11] declarator-id attribute-specifier-seq[opt]
5211 /// declarator-id: [C++ 8]
5212 /// '...'[opt] id-expression
5213 /// '::'[opt] nested-name-specifier[opt] type-name
5215 /// id-expression: [C++ 5.1]
5219 /// unqualified-id: [C++ 5.1]
5221 /// operator-function-id
5222 /// conversion-function-id
5226 /// C++17 adds the following, which we also handle here:
5228 /// simple-declaration:
5229 /// <decl-spec> '[' identifier-list ']' brace-or-equal-initializer ';'
5231 /// Note, any additional constructs added here may need corresponding changes
5232 /// in isConstructorDeclarator.
5233 void Parser::ParseDirectDeclarator(Declarator &D) {
5234 DeclaratorScopeObj DeclScopeObj(*this, D.getCXXScopeSpec());
5236 if (getLangOpts().CPlusPlus && D.mayHaveIdentifier()) {
5237 // This might be a C++17 structured binding.
5238 if (Tok.is(tok::l_square) && !D.mayOmitIdentifier() &&
5239 D.getCXXScopeSpec().isEmpty())
5240 return ParseDecompositionDeclarator(D);
5242 // Don't parse FOO:BAR as if it were a typo for FOO::BAR inside a class, in
5243 // this context it is a bitfield. Also in range-based for statement colon
5244 // may delimit for-range-declaration.
5245 ColonProtectionRAIIObject X(*this,
5246 D.getContext() == Declarator::MemberContext ||
5247 (D.getContext() == Declarator::ForContext &&
5248 getLangOpts().CPlusPlus11));
5250 // ParseDeclaratorInternal might already have parsed the scope.
5251 if (D.getCXXScopeSpec().isEmpty()) {
5252 bool EnteringContext = D.getContext() == Declarator::FileContext ||
5253 D.getContext() == Declarator::MemberContext;
5254 ParseOptionalCXXScopeSpecifier(D.getCXXScopeSpec(), nullptr,
5258 if (D.getCXXScopeSpec().isValid()) {
5259 if (Actions.ShouldEnterDeclaratorScope(getCurScope(),
5260 D.getCXXScopeSpec()))
5261 // Change the declaration context for name lookup, until this function
5262 // is exited (and the declarator has been parsed).
5263 DeclScopeObj.EnterDeclaratorScope();
5264 else if (getObjCDeclContext()) {
5265 // Ensure that we don't interpret the next token as an identifier when
5266 // dealing with declarations in an Objective-C container.
5267 D.SetIdentifier(nullptr, Tok.getLocation());
5268 D.setInvalidType(true);
5270 goto PastIdentifier;
5274 // C++0x [dcl.fct]p14:
5275 // There is a syntactic ambiguity when an ellipsis occurs at the end of a
5276 // parameter-declaration-clause without a preceding comma. In this case,
5277 // the ellipsis is parsed as part of the abstract-declarator if the type
5278 // of the parameter either names a template parameter pack that has not
5279 // been expanded or contains auto; otherwise, it is parsed as part of the
5280 // parameter-declaration-clause.
5281 if (Tok.is(tok::ellipsis) && D.getCXXScopeSpec().isEmpty() &&
5282 !((D.getContext() == Declarator::PrototypeContext ||
5283 D.getContext() == Declarator::LambdaExprParameterContext ||
5284 D.getContext() == Declarator::BlockLiteralContext) &&
5285 NextToken().is(tok::r_paren) &&
5286 !D.hasGroupingParens() &&
5287 !Actions.containsUnexpandedParameterPacks(D) &&
5288 D.getDeclSpec().getTypeSpecType() != TST_auto)) {
5289 SourceLocation EllipsisLoc = ConsumeToken();
5290 if (isPtrOperatorToken(Tok.getKind(), getLangOpts(), D.getContext())) {
5291 // The ellipsis was put in the wrong place. Recover, and explain to
5292 // the user what they should have done.
5294 if (EllipsisLoc.isValid())
5295 DiagnoseMisplacedEllipsisInDeclarator(EllipsisLoc, D);
5298 D.setEllipsisLoc(EllipsisLoc);
5300 // The ellipsis can't be followed by a parenthesized declarator. We
5301 // check for that in ParseParenDeclarator, after we have disambiguated
5302 // the l_paren token.
5305 if (Tok.isOneOf(tok::identifier, tok::kw_operator, tok::annot_template_id,
5307 // We found something that indicates the start of an unqualified-id.
5308 // Parse that unqualified-id.
5309 bool AllowConstructorName;
5310 if (D.getDeclSpec().hasTypeSpecifier())
5311 AllowConstructorName = false;
5312 else if (D.getCXXScopeSpec().isSet())
5313 AllowConstructorName =
5314 (D.getContext() == Declarator::FileContext ||
5315 D.getContext() == Declarator::MemberContext);
5317 AllowConstructorName = (D.getContext() == Declarator::MemberContext);
5319 SourceLocation TemplateKWLoc;
5320 bool HadScope = D.getCXXScopeSpec().isValid();
5321 if (ParseUnqualifiedId(D.getCXXScopeSpec(),
5322 /*EnteringContext=*/true,
5323 /*AllowDestructorName=*/true, AllowConstructorName,
5324 nullptr, TemplateKWLoc, D.getName()) ||
5325 // Once we're past the identifier, if the scope was bad, mark the
5326 // whole declarator bad.
5327 D.getCXXScopeSpec().isInvalid()) {
5328 D.SetIdentifier(nullptr, Tok.getLocation());
5329 D.setInvalidType(true);
5331 // ParseUnqualifiedId might have parsed a scope specifier during error
5332 // recovery. If it did so, enter that scope.
5333 if (!HadScope && D.getCXXScopeSpec().isValid() &&
5334 Actions.ShouldEnterDeclaratorScope(getCurScope(),
5335 D.getCXXScopeSpec()))
5336 DeclScopeObj.EnterDeclaratorScope();
5338 // Parsed the unqualified-id; update range information and move along.
5339 if (D.getSourceRange().getBegin().isInvalid())
5340 D.SetRangeBegin(D.getName().getSourceRange().getBegin());
5341 D.SetRangeEnd(D.getName().getSourceRange().getEnd());
5343 goto PastIdentifier;
5346 if (D.getCXXScopeSpec().isNotEmpty()) {
5347 // We have a scope specifier but no following unqualified-id.
5348 Diag(PP.getLocForEndOfToken(D.getCXXScopeSpec().getEndLoc()),
5349 diag::err_expected_unqualified_id)
5351 D.SetIdentifier(nullptr, Tok.getLocation());
5352 goto PastIdentifier;
5354 } else if (Tok.is(tok::identifier) && D.mayHaveIdentifier()) {
5355 assert(!getLangOpts().CPlusPlus &&
5356 "There's a C++-specific check for tok::identifier above");
5357 assert(Tok.getIdentifierInfo() && "Not an identifier?");
5358 D.SetIdentifier(Tok.getIdentifierInfo(), Tok.getLocation());
5359 D.SetRangeEnd(Tok.getLocation());
5361 goto PastIdentifier;
5362 } else if (Tok.is(tok::identifier) && D.diagnoseIdentifier()) {
5363 // A virt-specifier isn't treated as an identifier if it appears after a
5364 // trailing-return-type.
5365 if (D.getContext() != Declarator::TrailingReturnContext ||
5366 !isCXX11VirtSpecifier(Tok)) {
5367 Diag(Tok.getLocation(), diag::err_unexpected_unqualified_id)
5368 << FixItHint::CreateRemoval(Tok.getLocation());
5369 D.SetIdentifier(nullptr, Tok.getLocation());
5371 goto PastIdentifier;
5375 if (Tok.is(tok::l_paren)) {
5376 // direct-declarator: '(' declarator ')'
5377 // direct-declarator: '(' attributes declarator ')'
5378 // Example: 'char (*X)' or 'int (*XX)(void)'
5379 ParseParenDeclarator(D);
5381 // If the declarator was parenthesized, we entered the declarator
5382 // scope when parsing the parenthesized declarator, then exited
5383 // the scope already. Re-enter the scope, if we need to.
5384 if (D.getCXXScopeSpec().isSet()) {
5385 // If there was an error parsing parenthesized declarator, declarator
5386 // scope may have been entered before. Don't do it again.
5387 if (!D.isInvalidType() &&
5388 Actions.ShouldEnterDeclaratorScope(getCurScope(),
5389 D.getCXXScopeSpec()))
5390 // Change the declaration context for name lookup, until this function
5391 // is exited (and the declarator has been parsed).
5392 DeclScopeObj.EnterDeclaratorScope();
5394 } else if (D.mayOmitIdentifier()) {
5395 // This could be something simple like "int" (in which case the declarator
5396 // portion is empty), if an abstract-declarator is allowed.
5397 D.SetIdentifier(nullptr, Tok.getLocation());
5399 // The grammar for abstract-pack-declarator does not allow grouping parens.
5400 // FIXME: Revisit this once core issue 1488 is resolved.
5401 if (D.hasEllipsis() && D.hasGroupingParens())
5402 Diag(PP.getLocForEndOfToken(D.getEllipsisLoc()),
5403 diag::ext_abstract_pack_declarator_parens);
5405 if (Tok.getKind() == tok::annot_pragma_parser_crash)
5407 if (Tok.is(tok::l_square))
5408 return ParseMisplacedBracketDeclarator(D);
5409 if (D.getContext() == Declarator::MemberContext) {
5410 Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
5411 diag::err_expected_member_name_or_semi)
5412 << (D.getDeclSpec().isEmpty() ? SourceRange()
5413 : D.getDeclSpec().getSourceRange());
5414 } else if (getLangOpts().CPlusPlus) {
5415 if (Tok.isOneOf(tok::period, tok::arrow))
5416 Diag(Tok, diag::err_invalid_operator_on_type) << Tok.is(tok::arrow);
5418 SourceLocation Loc = D.getCXXScopeSpec().getEndLoc();
5419 if (Tok.isAtStartOfLine() && Loc.isValid())
5420 Diag(PP.getLocForEndOfToken(Loc), diag::err_expected_unqualified_id)
5421 << getLangOpts().CPlusPlus;
5423 Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
5424 diag::err_expected_unqualified_id)
5425 << getLangOpts().CPlusPlus;
5428 Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
5429 diag::err_expected_either)
5430 << tok::identifier << tok::l_paren;
5432 D.SetIdentifier(nullptr, Tok.getLocation());
5433 D.setInvalidType(true);
5437 assert(D.isPastIdentifier() &&
5438 "Haven't past the location of the identifier yet?");
5440 // Don't parse attributes unless we have parsed an unparenthesized name.
5441 if (D.hasName() && !D.getNumTypeObjects())
5442 MaybeParseCXX11Attributes(D);
5445 if (Tok.is(tok::l_paren)) {
5446 // Enter function-declaration scope, limiting any declarators to the
5447 // function prototype scope, including parameter declarators.
5448 ParseScope PrototypeScope(this,
5449 Scope::FunctionPrototypeScope|Scope::DeclScope|
5450 (D.isFunctionDeclaratorAFunctionDeclaration()
5451 ? Scope::FunctionDeclarationScope : 0));
5453 // The paren may be part of a C++ direct initializer, eg. "int x(1);".
5454 // In such a case, check if we actually have a function declarator; if it
5455 // is not, the declarator has been fully parsed.
5456 bool IsAmbiguous = false;
5457 if (getLangOpts().CPlusPlus && D.mayBeFollowedByCXXDirectInit()) {
5458 // The name of the declarator, if any, is tentatively declared within
5459 // a possible direct initializer.
5460 TentativelyDeclaredIdentifiers.push_back(D.getIdentifier());
5461 bool IsFunctionDecl = isCXXFunctionDeclarator(&IsAmbiguous);
5462 TentativelyDeclaredIdentifiers.pop_back();
5463 if (!IsFunctionDecl)
5466 ParsedAttributes attrs(AttrFactory);
5467 BalancedDelimiterTracker T(*this, tok::l_paren);
5469 ParseFunctionDeclarator(D, attrs, T, IsAmbiguous);
5470 PrototypeScope.Exit();
5471 } else if (Tok.is(tok::l_square)) {
5472 ParseBracketDeclarator(D);
5479 void Parser::ParseDecompositionDeclarator(Declarator &D) {
5480 assert(Tok.is(tok::l_square));
5482 // If this doesn't look like a structured binding, maybe it's a misplaced
5483 // array declarator.
5484 // FIXME: Consume the l_square first so we don't need extra lookahead for
5486 if (!(NextToken().is(tok::identifier) &&
5487 GetLookAheadToken(2).isOneOf(tok::comma, tok::r_square)) &&
5488 !(NextToken().is(tok::r_square) &&
5489 GetLookAheadToken(2).isOneOf(tok::equal, tok::l_brace)))
5490 return ParseMisplacedBracketDeclarator(D);
5492 BalancedDelimiterTracker T(*this, tok::l_square);
5495 SmallVector<DecompositionDeclarator::Binding, 32> Bindings;
5496 while (Tok.isNot(tok::r_square)) {
5497 if (!Bindings.empty()) {
5498 if (Tok.is(tok::comma))
5501 if (Tok.is(tok::identifier)) {
5502 SourceLocation EndLoc = getEndOfPreviousToken();
5503 Diag(EndLoc, diag::err_expected)
5504 << tok::comma << FixItHint::CreateInsertion(EndLoc, ",");
5506 Diag(Tok, diag::err_expected_comma_or_rsquare);
5509 SkipUntil(tok::r_square, tok::comma, tok::identifier,
5510 StopAtSemi | StopBeforeMatch);
5511 if (Tok.is(tok::comma))
5513 else if (Tok.isNot(tok::identifier))
5518 if (Tok.isNot(tok::identifier)) {
5519 Diag(Tok, diag::err_expected) << tok::identifier;
5523 Bindings.push_back({Tok.getIdentifierInfo(), Tok.getLocation()});
5527 if (Tok.isNot(tok::r_square))
5528 // We've already diagnosed a problem here.
5531 // C++17 does not allow the identifier-list in a structured binding
5533 if (Bindings.empty())
5534 Diag(Tok.getLocation(), diag::ext_decomp_decl_empty);
5539 return D.setDecompositionBindings(T.getOpenLocation(), Bindings,
5540 T.getCloseLocation());
5543 /// ParseParenDeclarator - We parsed the declarator D up to a paren. This is
5544 /// only called before the identifier, so these are most likely just grouping
5545 /// parens for precedence. If we find that these are actually function
5546 /// parameter parens in an abstract-declarator, we call ParseFunctionDeclarator.
5548 /// direct-declarator:
5549 /// '(' declarator ')'
5550 /// [GNU] '(' attributes declarator ')'
5551 /// direct-declarator '(' parameter-type-list ')'
5552 /// direct-declarator '(' identifier-list[opt] ')'
5553 /// [GNU] direct-declarator '(' parameter-forward-declarations
5554 /// parameter-type-list[opt] ')'
5556 void Parser::ParseParenDeclarator(Declarator &D) {
5557 BalancedDelimiterTracker T(*this, tok::l_paren);
5560 assert(!D.isPastIdentifier() && "Should be called before passing identifier");
5562 // Eat any attributes before we look at whether this is a grouping or function
5563 // declarator paren. If this is a grouping paren, the attribute applies to
5564 // the type being built up, for example:
5565 // int (__attribute__(()) *x)(long y)
5566 // If this ends up not being a grouping paren, the attribute applies to the
5567 // first argument, for example:
5568 // int (__attribute__(()) int x)
5569 // In either case, we need to eat any attributes to be able to determine what
5570 // sort of paren this is.
5572 ParsedAttributes attrs(AttrFactory);
5573 bool RequiresArg = false;
5574 if (Tok.is(tok::kw___attribute)) {
5575 ParseGNUAttributes(attrs);
5577 // We require that the argument list (if this is a non-grouping paren) be
5578 // present even if the attribute list was empty.
5582 // Eat any Microsoft extensions.
5583 ParseMicrosoftTypeAttributes(attrs);
5585 // Eat any Borland extensions.
5586 if (Tok.is(tok::kw___pascal))
5587 ParseBorlandTypeAttributes(attrs);
5589 // If we haven't past the identifier yet (or where the identifier would be
5590 // stored, if this is an abstract declarator), then this is probably just
5591 // grouping parens. However, if this could be an abstract-declarator, then
5592 // this could also be the start of function arguments (consider 'void()').
5595 if (!D.mayOmitIdentifier()) {
5596 // If this can't be an abstract-declarator, this *must* be a grouping
5597 // paren, because we haven't seen the identifier yet.
5599 } else if (Tok.is(tok::r_paren) || // 'int()' is a function.
5600 (getLangOpts().CPlusPlus && Tok.is(tok::ellipsis) &&
5601 NextToken().is(tok::r_paren)) || // C++ int(...)
5602 isDeclarationSpecifier() || // 'int(int)' is a function.
5603 isCXX11AttributeSpecifier()) { // 'int([[]]int)' is a function.
5604 // This handles C99 6.7.5.3p11: in "typedef int X; void foo(X)", X is
5605 // considered to be a type, not a K&R identifier-list.
5608 // Otherwise, this is a grouping paren, e.g. 'int (*X)' or 'int(X)'.
5612 // If this is a grouping paren, handle:
5613 // direct-declarator: '(' declarator ')'
5614 // direct-declarator: '(' attributes declarator ')'
5616 SourceLocation EllipsisLoc = D.getEllipsisLoc();
5617 D.setEllipsisLoc(SourceLocation());
5619 bool hadGroupingParens = D.hasGroupingParens();
5620 D.setGroupingParens(true);
5621 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
5624 D.AddTypeInfo(DeclaratorChunk::getParen(T.getOpenLocation(),
5625 T.getCloseLocation()),
5626 attrs, T.getCloseLocation());
5628 D.setGroupingParens(hadGroupingParens);
5630 // An ellipsis cannot be placed outside parentheses.
5631 if (EllipsisLoc.isValid())
5632 DiagnoseMisplacedEllipsisInDeclarator(EllipsisLoc, D);
5637 // Okay, if this wasn't a grouping paren, it must be the start of a function
5638 // argument list. Recognize that this declarator will never have an
5639 // identifier (and remember where it would have been), then call into
5640 // ParseFunctionDeclarator to handle of argument list.
5641 D.SetIdentifier(nullptr, Tok.getLocation());
5643 // Enter function-declaration scope, limiting any declarators to the
5644 // function prototype scope, including parameter declarators.
5645 ParseScope PrototypeScope(this,
5646 Scope::FunctionPrototypeScope | Scope::DeclScope |
5647 (D.isFunctionDeclaratorAFunctionDeclaration()
5648 ? Scope::FunctionDeclarationScope : 0));
5649 ParseFunctionDeclarator(D, attrs, T, false, RequiresArg);
5650 PrototypeScope.Exit();
5653 /// ParseFunctionDeclarator - We are after the identifier and have parsed the
5654 /// declarator D up to a paren, which indicates that we are parsing function
5657 /// If FirstArgAttrs is non-null, then the caller parsed those arguments
5658 /// immediately after the open paren - they should be considered to be the
5659 /// first argument of a parameter.
5661 /// If RequiresArg is true, then the first argument of the function is required
5662 /// to be present and required to not be an identifier list.
5664 /// For C++, after the parameter-list, it also parses the cv-qualifier-seq[opt],
5665 /// (C++11) ref-qualifier[opt], exception-specification[opt],
5666 /// (C++11) attribute-specifier-seq[opt], and (C++11) trailing-return-type[opt].
5668 /// [C++11] exception-specification:
5669 /// dynamic-exception-specification
5670 /// noexcept-specification
5672 void Parser::ParseFunctionDeclarator(Declarator &D,
5673 ParsedAttributes &FirstArgAttrs,
5674 BalancedDelimiterTracker &Tracker,
5677 assert(getCurScope()->isFunctionPrototypeScope() &&
5678 "Should call from a Function scope");
5679 // lparen is already consumed!
5680 assert(D.isPastIdentifier() && "Should not call before identifier!");
5682 // This should be true when the function has typed arguments.
5683 // Otherwise, it is treated as a K&R-style function.
5684 bool HasProto = false;
5685 // Build up an array of information about the parsed arguments.
5686 SmallVector<DeclaratorChunk::ParamInfo, 16> ParamInfo;
5687 // Remember where we see an ellipsis, if any.
5688 SourceLocation EllipsisLoc;
5690 DeclSpec DS(AttrFactory);
5691 bool RefQualifierIsLValueRef = true;
5692 SourceLocation RefQualifierLoc;
5693 SourceLocation ConstQualifierLoc;
5694 SourceLocation VolatileQualifierLoc;
5695 SourceLocation RestrictQualifierLoc;
5696 ExceptionSpecificationType ESpecType = EST_None;
5697 SourceRange ESpecRange;
5698 SmallVector<ParsedType, 2> DynamicExceptions;
5699 SmallVector<SourceRange, 2> DynamicExceptionRanges;
5700 ExprResult NoexceptExpr;
5701 CachedTokens *ExceptionSpecTokens = nullptr;
5702 ParsedAttributes FnAttrs(AttrFactory);
5703 TypeResult TrailingReturnType;
5705 /* LocalEndLoc is the end location for the local FunctionTypeLoc.
5706 EndLoc is the end location for the function declarator.
5707 They differ for trailing return types. */
5708 SourceLocation StartLoc, LocalEndLoc, EndLoc;
5709 SourceLocation LParenLoc, RParenLoc;
5710 LParenLoc = Tracker.getOpenLocation();
5711 StartLoc = LParenLoc;
5713 if (isFunctionDeclaratorIdentifierList()) {
5715 Diag(Tok, diag::err_argument_required_after_attribute);
5717 ParseFunctionDeclaratorIdentifierList(D, ParamInfo);
5719 Tracker.consumeClose();
5720 RParenLoc = Tracker.getCloseLocation();
5721 LocalEndLoc = RParenLoc;
5724 if (Tok.isNot(tok::r_paren))
5725 ParseParameterDeclarationClause(D, FirstArgAttrs, ParamInfo,
5727 else if (RequiresArg)
5728 Diag(Tok, diag::err_argument_required_after_attribute);
5730 HasProto = ParamInfo.size() || getLangOpts().CPlusPlus;
5732 // If we have the closing ')', eat it.
5733 Tracker.consumeClose();
5734 RParenLoc = Tracker.getCloseLocation();
5735 LocalEndLoc = RParenLoc;
5738 if (getLangOpts().CPlusPlus) {
5739 // FIXME: Accept these components in any order, and produce fixits to
5740 // correct the order if the user gets it wrong. Ideally we should deal
5741 // with the pure-specifier in the same way.
5743 // Parse cv-qualifier-seq[opt].
5744 ParseTypeQualifierListOpt(DS, AR_NoAttributesParsed,
5745 /*AtomicAllowed*/ false);
5746 if (!DS.getSourceRange().getEnd().isInvalid()) {
5747 EndLoc = DS.getSourceRange().getEnd();
5748 ConstQualifierLoc = DS.getConstSpecLoc();
5749 VolatileQualifierLoc = DS.getVolatileSpecLoc();
5750 RestrictQualifierLoc = DS.getRestrictSpecLoc();
5753 // Parse ref-qualifier[opt].
5754 if (ParseRefQualifier(RefQualifierIsLValueRef, RefQualifierLoc))
5755 EndLoc = RefQualifierLoc;
5757 // C++11 [expr.prim.general]p3:
5758 // If a declaration declares a member function or member function
5759 // template of a class X, the expression this is a prvalue of type
5760 // "pointer to cv-qualifier-seq X" between the optional cv-qualifer-seq
5761 // and the end of the function-definition, member-declarator, or
5763 // FIXME: currently, "static" case isn't handled correctly.
5764 bool IsCXX11MemberFunction =
5765 getLangOpts().CPlusPlus11 &&
5766 D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef &&
5767 (D.getContext() == Declarator::MemberContext
5768 ? !D.getDeclSpec().isFriendSpecified()
5769 : D.getContext() == Declarator::FileContext &&
5770 D.getCXXScopeSpec().isValid() &&
5771 Actions.CurContext->isRecord());
5772 Sema::CXXThisScopeRAII ThisScope(Actions,
5773 dyn_cast<CXXRecordDecl>(Actions.CurContext),
5774 DS.getTypeQualifiers() |
5775 (D.getDeclSpec().isConstexprSpecified() &&
5776 !getLangOpts().CPlusPlus14
5777 ? Qualifiers::Const : 0),
5778 IsCXX11MemberFunction);
5780 // Parse exception-specification[opt].
5781 bool Delayed = D.isFirstDeclarationOfMember() &&
5782 D.isFunctionDeclaratorAFunctionDeclaration();
5783 if (Delayed && Actions.isLibstdcxxEagerExceptionSpecHack(D) &&
5784 GetLookAheadToken(0).is(tok::kw_noexcept) &&
5785 GetLookAheadToken(1).is(tok::l_paren) &&
5786 GetLookAheadToken(2).is(tok::kw_noexcept) &&
5787 GetLookAheadToken(3).is(tok::l_paren) &&
5788 GetLookAheadToken(4).is(tok::identifier) &&
5789 GetLookAheadToken(4).getIdentifierInfo()->isStr("swap")) {
5790 // HACK: We've got an exception-specification
5791 // noexcept(noexcept(swap(...)))
5793 // noexcept(noexcept(swap(...)) && noexcept(swap(...)))
5794 // on a 'swap' member function. This is a libstdc++ bug; the lookup
5795 // for 'swap' will only find the function we're currently declaring,
5796 // whereas it expects to find a non-member swap through ADL. Turn off
5797 // delayed parsing to give it a chance to find what it expects.
5800 ESpecType = tryParseExceptionSpecification(Delayed,
5803 DynamicExceptionRanges,
5805 ExceptionSpecTokens);
5806 if (ESpecType != EST_None)
5807 EndLoc = ESpecRange.getEnd();
5809 // Parse attribute-specifier-seq[opt]. Per DR 979 and DR 1297, this goes
5810 // after the exception-specification.
5811 MaybeParseCXX11Attributes(FnAttrs);
5813 // Parse trailing-return-type[opt].
5814 LocalEndLoc = EndLoc;
5815 if (getLangOpts().CPlusPlus11 && Tok.is(tok::arrow)) {
5816 Diag(Tok, diag::warn_cxx98_compat_trailing_return_type);
5817 if (D.getDeclSpec().getTypeSpecType() == TST_auto)
5818 StartLoc = D.getDeclSpec().getTypeSpecTypeLoc();
5819 LocalEndLoc = Tok.getLocation();
5821 TrailingReturnType = ParseTrailingReturnType(Range);
5822 EndLoc = Range.getEnd();
5827 // Collect non-parameter declarations from the prototype if this is a function
5828 // declaration. They will be moved into the scope of the function. Only do
5829 // this in C and not C++, where the decls will continue to live in the
5830 // surrounding context.
5831 SmallVector<NamedDecl *, 0> DeclsInPrototype;
5832 if (getCurScope()->getFlags() & Scope::FunctionDeclarationScope &&
5833 !getLangOpts().CPlusPlus) {
5834 for (Decl *D : getCurScope()->decls()) {
5835 NamedDecl *ND = dyn_cast<NamedDecl>(D);
5836 if (!ND || isa<ParmVarDecl>(ND))
5838 DeclsInPrototype.push_back(ND);
5842 // Remember that we parsed a function type, and remember the attributes.
5843 D.AddTypeInfo(DeclaratorChunk::getFunction(HasProto,
5846 ParamInfo.data(), ParamInfo.size(),
5847 EllipsisLoc, RParenLoc,
5848 DS.getTypeQualifiers(),
5849 RefQualifierIsLValueRef,
5850 RefQualifierLoc, ConstQualifierLoc,
5851 VolatileQualifierLoc,
5852 RestrictQualifierLoc,
5853 /*MutableLoc=*/SourceLocation(),
5854 ESpecType, ESpecRange,
5855 DynamicExceptions.data(),
5856 DynamicExceptionRanges.data(),
5857 DynamicExceptions.size(),
5858 NoexceptExpr.isUsable() ?
5859 NoexceptExpr.get() : nullptr,
5860 ExceptionSpecTokens,
5862 StartLoc, LocalEndLoc, D,
5863 TrailingReturnType),
5867 /// ParseRefQualifier - Parses a member function ref-qualifier. Returns
5868 /// true if a ref-qualifier is found.
5869 bool Parser::ParseRefQualifier(bool &RefQualifierIsLValueRef,
5870 SourceLocation &RefQualifierLoc) {
5871 if (Tok.isOneOf(tok::amp, tok::ampamp)) {
5872 Diag(Tok, getLangOpts().CPlusPlus11 ?
5873 diag::warn_cxx98_compat_ref_qualifier :
5874 diag::ext_ref_qualifier);
5876 RefQualifierIsLValueRef = Tok.is(tok::amp);
5877 RefQualifierLoc = ConsumeToken();
5883 /// isFunctionDeclaratorIdentifierList - This parameter list may have an
5884 /// identifier list form for a K&R-style function: void foo(a,b,c)
5886 /// Note that identifier-lists are only allowed for normal declarators, not for
5887 /// abstract-declarators.
5888 bool Parser::isFunctionDeclaratorIdentifierList() {
5889 return !getLangOpts().CPlusPlus
5890 && Tok.is(tok::identifier)
5891 && !TryAltiVecVectorToken()
5892 // K&R identifier lists can't have typedefs as identifiers, per C99
5894 && (TryAnnotateTypeOrScopeToken() || !Tok.is(tok::annot_typename))
5895 // Identifier lists follow a really simple grammar: the identifiers can
5896 // be followed *only* by a ", identifier" or ")". However, K&R
5897 // identifier lists are really rare in the brave new modern world, and
5898 // it is very common for someone to typo a type in a non-K&R style
5899 // list. If we are presented with something like: "void foo(intptr x,
5900 // float y)", we don't want to start parsing the function declarator as
5901 // though it is a K&R style declarator just because intptr is an
5904 // To handle this, we check to see if the token after the first
5905 // identifier is a "," or ")". Only then do we parse it as an
5907 && (!Tok.is(tok::eof) &&
5908 (NextToken().is(tok::comma) || NextToken().is(tok::r_paren)));
5911 /// ParseFunctionDeclaratorIdentifierList - While parsing a function declarator
5912 /// we found a K&R-style identifier list instead of a typed parameter list.
5914 /// After returning, ParamInfo will hold the parsed parameters.
5916 /// identifier-list: [C99 6.7.5]
5918 /// identifier-list ',' identifier
5920 void Parser::ParseFunctionDeclaratorIdentifierList(
5922 SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo) {
5923 // If there was no identifier specified for the declarator, either we are in
5924 // an abstract-declarator, or we are in a parameter declarator which was found
5925 // to be abstract. In abstract-declarators, identifier lists are not valid:
5927 if (!D.getIdentifier())
5928 Diag(Tok, diag::ext_ident_list_in_param);
5930 // Maintain an efficient lookup of params we have seen so far.
5931 llvm::SmallSet<const IdentifierInfo*, 16> ParamsSoFar;
5934 // If this isn't an identifier, report the error and skip until ')'.
5935 if (Tok.isNot(tok::identifier)) {
5936 Diag(Tok, diag::err_expected) << tok::identifier;
5937 SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch);
5938 // Forget we parsed anything.
5943 IdentifierInfo *ParmII = Tok.getIdentifierInfo();
5945 // Reject 'typedef int y; int test(x, y)', but continue parsing.
5946 if (Actions.getTypeName(*ParmII, Tok.getLocation(), getCurScope()))
5947 Diag(Tok, diag::err_unexpected_typedef_ident) << ParmII;
5949 // Verify that the argument identifier has not already been mentioned.
5950 if (!ParamsSoFar.insert(ParmII).second) {
5951 Diag(Tok, diag::err_param_redefinition) << ParmII;
5953 // Remember this identifier in ParamInfo.
5954 ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
5959 // Eat the identifier.
5961 // The list continues if we see a comma.
5962 } while (TryConsumeToken(tok::comma));
5965 /// ParseParameterDeclarationClause - Parse a (possibly empty) parameter-list
5966 /// after the opening parenthesis. This function will not parse a K&R-style
5967 /// identifier list.
5969 /// D is the declarator being parsed. If FirstArgAttrs is non-null, then the
5970 /// caller parsed those arguments immediately after the open paren - they should
5971 /// be considered to be part of the first parameter.
5973 /// After returning, ParamInfo will hold the parsed parameters. EllipsisLoc will
5974 /// be the location of the ellipsis, if any was parsed.
5976 /// parameter-type-list: [C99 6.7.5]
5978 /// parameter-list ',' '...'
5979 /// [C++] parameter-list '...'
5981 /// parameter-list: [C99 6.7.5]
5982 /// parameter-declaration
5983 /// parameter-list ',' parameter-declaration
5985 /// parameter-declaration: [C99 6.7.5]
5986 /// declaration-specifiers declarator
5987 /// [C++] declaration-specifiers declarator '=' assignment-expression
5988 /// [C++11] initializer-clause
5989 /// [GNU] declaration-specifiers declarator attributes
5990 /// declaration-specifiers abstract-declarator[opt]
5991 /// [C++] declaration-specifiers abstract-declarator[opt]
5992 /// '=' assignment-expression
5993 /// [GNU] declaration-specifiers abstract-declarator[opt] attributes
5994 /// [C++11] attribute-specifier-seq parameter-declaration
5996 void Parser::ParseParameterDeclarationClause(
5998 ParsedAttributes &FirstArgAttrs,
5999 SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo,
6000 SourceLocation &EllipsisLoc) {
6002 // FIXME: Issue a diagnostic if we parsed an attribute-specifier-seq
6003 // before deciding this was a parameter-declaration-clause.
6004 if (TryConsumeToken(tok::ellipsis, EllipsisLoc))
6007 // Parse the declaration-specifiers.
6008 // Just use the ParsingDeclaration "scope" of the declarator.
6009 DeclSpec DS(AttrFactory);
6011 // Parse any C++11 attributes.
6012 MaybeParseCXX11Attributes(DS.getAttributes());
6014 // Skip any Microsoft attributes before a param.
6015 MaybeParseMicrosoftAttributes(DS.getAttributes());
6017 SourceLocation DSStart = Tok.getLocation();
6019 // If the caller parsed attributes for the first argument, add them now.
6020 // Take them so that we only apply the attributes to the first parameter.
6021 // FIXME: If we can leave the attributes in the token stream somehow, we can
6022 // get rid of a parameter (FirstArgAttrs) and this statement. It might be
6024 DS.takeAttributesFrom(FirstArgAttrs);
6026 ParseDeclarationSpecifiers(DS);
6029 // Parse the declarator. This is "PrototypeContext" or
6030 // "LambdaExprParameterContext", because we must accept either
6031 // 'declarator' or 'abstract-declarator' here.
6032 Declarator ParmDeclarator(DS,
6033 D.getContext() == Declarator::LambdaExprContext ?
6034 Declarator::LambdaExprParameterContext :
6035 Declarator::PrototypeContext);
6036 ParseDeclarator(ParmDeclarator);
6038 // Parse GNU attributes, if present.
6039 MaybeParseGNUAttributes(ParmDeclarator);
6041 // Remember this parsed parameter in ParamInfo.
6042 IdentifierInfo *ParmII = ParmDeclarator.getIdentifier();
6044 // DefArgToks is used when the parsing of default arguments needs
6046 std::unique_ptr<CachedTokens> DefArgToks;
6048 // If no parameter was specified, verify that *something* was specified,
6049 // otherwise we have a missing type and identifier.
6050 if (DS.isEmpty() && ParmDeclarator.getIdentifier() == nullptr &&
6051 ParmDeclarator.getNumTypeObjects() == 0) {
6052 // Completely missing, emit error.
6053 Diag(DSStart, diag::err_missing_param);
6055 // Otherwise, we have something. Add it and let semantic analysis try
6056 // to grok it and add the result to the ParamInfo we are building.
6058 // Last chance to recover from a misplaced ellipsis in an attempted
6059 // parameter pack declaration.
6060 if (Tok.is(tok::ellipsis) &&
6061 (NextToken().isNot(tok::r_paren) ||
6062 (!ParmDeclarator.getEllipsisLoc().isValid() &&
6063 !Actions.isUnexpandedParameterPackPermitted())) &&
6064 Actions.containsUnexpandedParameterPacks(ParmDeclarator))
6065 DiagnoseMisplacedEllipsisInDeclarator(ConsumeToken(), ParmDeclarator);
6067 // Inform the actions module about the parameter declarator, so it gets
6068 // added to the current scope.
6069 Decl *Param = Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator);
6070 // Parse the default argument, if any. We parse the default
6071 // arguments in all dialects; the semantic analysis in
6072 // ActOnParamDefaultArgument will reject the default argument in
6074 if (Tok.is(tok::equal)) {
6075 SourceLocation EqualLoc = Tok.getLocation();
6077 // Parse the default argument
6078 if (D.getContext() == Declarator::MemberContext) {
6079 // If we're inside a class definition, cache the tokens
6080 // corresponding to the default argument. We'll actually parse
6081 // them when we see the end of the class definition.
6082 DefArgToks.reset(new CachedTokens);
6084 SourceLocation ArgStartLoc = NextToken().getLocation();
6085 if (!ConsumeAndStoreInitializer(*DefArgToks, CIK_DefaultArgument)) {
6087 Actions.ActOnParamDefaultArgumentError(Param, EqualLoc);
6089 Actions.ActOnParamUnparsedDefaultArgument(Param, EqualLoc,
6096 // The argument isn't actually potentially evaluated unless it is
6098 EnterExpressionEvaluationContext Eval(Actions,
6099 Sema::PotentiallyEvaluatedIfUsed,
6102 ExprResult DefArgResult;
6103 if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
6104 Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
6105 DefArgResult = ParseBraceInitializer();
6107 DefArgResult = ParseAssignmentExpression();
6108 DefArgResult = Actions.CorrectDelayedTyposInExpr(DefArgResult);
6109 if (DefArgResult.isInvalid()) {
6110 Actions.ActOnParamDefaultArgumentError(Param, EqualLoc);
6111 SkipUntil(tok::comma, tok::r_paren, StopAtSemi | StopBeforeMatch);
6113 // Inform the actions module about the default argument
6114 Actions.ActOnParamDefaultArgument(Param, EqualLoc,
6115 DefArgResult.get());
6120 ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
6121 ParmDeclarator.getIdentifierLoc(),
6122 Param, std::move(DefArgToks)));
6125 if (TryConsumeToken(tok::ellipsis, EllipsisLoc)) {
6126 if (!getLangOpts().CPlusPlus) {
6127 // We have ellipsis without a preceding ',', which is ill-formed
6128 // in C. Complain and provide the fix.
6129 Diag(EllipsisLoc, diag::err_missing_comma_before_ellipsis)
6130 << FixItHint::CreateInsertion(EllipsisLoc, ", ");
6131 } else if (ParmDeclarator.getEllipsisLoc().isValid() ||
6132 Actions.containsUnexpandedParameterPacks(ParmDeclarator)) {
6133 // It looks like this was supposed to be a parameter pack. Warn and
6134 // point out where the ellipsis should have gone.
6135 SourceLocation ParmEllipsis = ParmDeclarator.getEllipsisLoc();
6136 Diag(EllipsisLoc, diag::warn_misplaced_ellipsis_vararg)
6137 << ParmEllipsis.isValid() << ParmEllipsis;
6138 if (ParmEllipsis.isValid()) {
6140 diag::note_misplaced_ellipsis_vararg_existing_ellipsis);
6142 Diag(ParmDeclarator.getIdentifierLoc(),
6143 diag::note_misplaced_ellipsis_vararg_add_ellipsis)
6144 << FixItHint::CreateInsertion(ParmDeclarator.getIdentifierLoc(),
6146 << !ParmDeclarator.hasName();
6148 Diag(EllipsisLoc, diag::note_misplaced_ellipsis_vararg_add_comma)
6149 << FixItHint::CreateInsertion(EllipsisLoc, ", ");
6152 // We can't have any more parameters after an ellipsis.
6156 // If the next token is a comma, consume it and keep reading arguments.
6157 } while (TryConsumeToken(tok::comma));
6160 /// [C90] direct-declarator '[' constant-expression[opt] ']'
6161 /// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']'
6162 /// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']'
6163 /// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']'
6164 /// [C99] direct-declarator '[' type-qual-list[opt] '*' ']'
6165 /// [C++11] direct-declarator '[' constant-expression[opt] ']'
6166 /// attribute-specifier-seq[opt]
6167 void Parser::ParseBracketDeclarator(Declarator &D) {
6168 if (CheckProhibitedCXX11Attribute())
6171 BalancedDelimiterTracker T(*this, tok::l_square);
6174 // C array syntax has many features, but by-far the most common is [] and [4].
6175 // This code does a fast path to handle some of the most obvious cases.
6176 if (Tok.getKind() == tok::r_square) {
6178 ParsedAttributes attrs(AttrFactory);
6179 MaybeParseCXX11Attributes(attrs);
6181 // Remember that we parsed the empty array type.
6182 D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false, nullptr,
6183 T.getOpenLocation(),
6184 T.getCloseLocation()),
6185 attrs, T.getCloseLocation());
6187 } else if (Tok.getKind() == tok::numeric_constant &&
6188 GetLookAheadToken(1).is(tok::r_square)) {
6189 // [4] is very common. Parse the numeric constant expression.
6190 ExprResult ExprRes(Actions.ActOnNumericConstant(Tok, getCurScope()));
6194 ParsedAttributes attrs(AttrFactory);
6195 MaybeParseCXX11Attributes(attrs);
6197 // Remember that we parsed a array type, and remember its features.
6198 D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false,
6200 T.getOpenLocation(),
6201 T.getCloseLocation()),
6202 attrs, T.getCloseLocation());
6204 } else if (Tok.getKind() == tok::code_completion) {
6205 Actions.CodeCompleteBracketDeclarator(getCurScope());
6206 return cutOffParsing();
6209 // If valid, this location is the position where we read the 'static' keyword.
6210 SourceLocation StaticLoc;
6211 TryConsumeToken(tok::kw_static, StaticLoc);
6213 // If there is a type-qualifier-list, read it now.
6214 // Type qualifiers in an array subscript are a C99 feature.
6215 DeclSpec DS(AttrFactory);
6216 ParseTypeQualifierListOpt(DS, AR_CXX11AttributesParsed);
6218 // If we haven't already read 'static', check to see if there is one after the
6219 // type-qualifier-list.
6220 if (!StaticLoc.isValid())
6221 TryConsumeToken(tok::kw_static, StaticLoc);
6223 // Handle "direct-declarator [ type-qual-list[opt] * ]".
6224 bool isStar = false;
6225 ExprResult NumElements;
6227 // Handle the case where we have '[*]' as the array size. However, a leading
6228 // star could be the start of an expression, for example 'X[*p + 4]'. Verify
6229 // the token after the star is a ']'. Since stars in arrays are
6230 // infrequent, use of lookahead is not costly here.
6231 if (Tok.is(tok::star) && GetLookAheadToken(1).is(tok::r_square)) {
6232 ConsumeToken(); // Eat the '*'.
6234 if (StaticLoc.isValid()) {
6235 Diag(StaticLoc, diag::err_unspecified_vla_size_with_static);
6236 StaticLoc = SourceLocation(); // Drop the static.
6239 } else if (Tok.isNot(tok::r_square)) {
6240 // Note, in C89, this production uses the constant-expr production instead
6241 // of assignment-expr. The only difference is that assignment-expr allows
6242 // things like '=' and '*='. Sema rejects these in C89 mode because they
6243 // are not i-c-e's, so we don't need to distinguish between the two here.
6245 // Parse the constant-expression or assignment-expression now (depending
6247 if (getLangOpts().CPlusPlus) {
6248 NumElements = ParseConstantExpression();
6250 EnterExpressionEvaluationContext Unevaluated(Actions,
6251 Sema::ConstantEvaluated);
6253 Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
6256 if (StaticLoc.isValid()) {
6257 Diag(StaticLoc, diag::err_unspecified_size_with_static);
6258 StaticLoc = SourceLocation(); // Drop the static.
6262 // If there was an error parsing the assignment-expression, recover.
6263 if (NumElements.isInvalid()) {
6264 D.setInvalidType(true);
6265 // If the expression was invalid, skip it.
6266 SkipUntil(tok::r_square, StopAtSemi);
6272 MaybeParseCXX11Attributes(DS.getAttributes());
6274 // Remember that we parsed a array type, and remember its features.
6275 D.AddTypeInfo(DeclaratorChunk::getArray(DS.getTypeQualifiers(),
6276 StaticLoc.isValid(), isStar,
6278 T.getOpenLocation(),
6279 T.getCloseLocation()),
6280 DS.getAttributes(), T.getCloseLocation());
6283 /// Diagnose brackets before an identifier.
6284 void Parser::ParseMisplacedBracketDeclarator(Declarator &D) {
6285 assert(Tok.is(tok::l_square) && "Missing opening bracket");
6286 assert(!D.mayOmitIdentifier() && "Declarator cannot omit identifier");
6288 SourceLocation StartBracketLoc = Tok.getLocation();
6289 Declarator TempDeclarator(D.getDeclSpec(), D.getContext());
6291 while (Tok.is(tok::l_square)) {
6292 ParseBracketDeclarator(TempDeclarator);
6295 // Stuff the location of the start of the brackets into the Declarator.
6296 // The diagnostics from ParseDirectDeclarator will make more sense if
6297 // they use this location instead.
6298 if (Tok.is(tok::semi))
6299 D.getName().EndLocation = StartBracketLoc;
6301 SourceLocation SuggestParenLoc = Tok.getLocation();
6303 // Now that the brackets are removed, try parsing the declarator again.
6304 ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
6306 // Something went wrong parsing the brackets, in which case,
6307 // ParseBracketDeclarator has emitted an error, and we don't need to emit
6309 if (TempDeclarator.getNumTypeObjects() == 0)
6312 // Determine if parens will need to be suggested in the diagnostic.
6313 bool NeedParens = false;
6314 if (D.getNumTypeObjects() != 0) {
6315 switch (D.getTypeObject(D.getNumTypeObjects() - 1).Kind) {
6316 case DeclaratorChunk::Pointer:
6317 case DeclaratorChunk::Reference:
6318 case DeclaratorChunk::BlockPointer:
6319 case DeclaratorChunk::MemberPointer:
6320 case DeclaratorChunk::Pipe:
6323 case DeclaratorChunk::Array:
6324 case DeclaratorChunk::Function:
6325 case DeclaratorChunk::Paren:
6331 // Create a DeclaratorChunk for the inserted parens.
6332 ParsedAttributes attrs(AttrFactory);
6333 SourceLocation EndLoc = PP.getLocForEndOfToken(D.getLocEnd());
6334 D.AddTypeInfo(DeclaratorChunk::getParen(SuggestParenLoc, EndLoc), attrs,
6338 // Adding back the bracket info to the end of the Declarator.
6339 for (unsigned i = 0, e = TempDeclarator.getNumTypeObjects(); i < e; ++i) {
6340 const DeclaratorChunk &Chunk = TempDeclarator.getTypeObject(i);
6341 ParsedAttributes attrs(AttrFactory);
6342 attrs.set(Chunk.Common.AttrList);
6343 D.AddTypeInfo(Chunk, attrs, SourceLocation());
6346 // The missing identifier would have been diagnosed in ParseDirectDeclarator.
6347 // If parentheses are required, always suggest them.
6348 if (!D.getIdentifier() && !NeedParens)
6351 SourceLocation EndBracketLoc = TempDeclarator.getLocEnd();
6353 // Generate the move bracket error message.
6354 SourceRange BracketRange(StartBracketLoc, EndBracketLoc);
6355 SourceLocation EndLoc = PP.getLocForEndOfToken(D.getLocEnd());
6358 Diag(EndLoc, diag::err_brackets_go_after_unqualified_id)
6359 << getLangOpts().CPlusPlus
6360 << FixItHint::CreateInsertion(SuggestParenLoc, "(")
6361 << FixItHint::CreateInsertion(EndLoc, ")")
6362 << FixItHint::CreateInsertionFromRange(
6363 EndLoc, CharSourceRange(BracketRange, true))
6364 << FixItHint::CreateRemoval(BracketRange);
6366 Diag(EndLoc, diag::err_brackets_go_after_unqualified_id)
6367 << getLangOpts().CPlusPlus
6368 << FixItHint::CreateInsertionFromRange(
6369 EndLoc, CharSourceRange(BracketRange, true))
6370 << FixItHint::CreateRemoval(BracketRange);
6374 /// [GNU] typeof-specifier:
6375 /// typeof ( expressions )
6376 /// typeof ( type-name )
6377 /// [GNU/C++] typeof unary-expression
6379 void Parser::ParseTypeofSpecifier(DeclSpec &DS) {
6380 assert(Tok.is(tok::kw_typeof) && "Not a typeof specifier");
6382 SourceLocation StartLoc = ConsumeToken();
6384 const bool hasParens = Tok.is(tok::l_paren);
6386 EnterExpressionEvaluationContext Unevaluated(Actions, Sema::Unevaluated,
6387 Sema::ReuseLambdaContextDecl);
6391 SourceRange CastRange;
6392 ExprResult Operand = Actions.CorrectDelayedTyposInExpr(
6393 ParseExprAfterUnaryExprOrTypeTrait(OpTok, isCastExpr, CastTy, CastRange));
6395 DS.setTypeofParensRange(CastRange);
6397 if (CastRange.getEnd().isInvalid())
6398 // FIXME: Not accurate, the range gets one token more than it should.
6399 DS.SetRangeEnd(Tok.getLocation());
6401 DS.SetRangeEnd(CastRange.getEnd());
6405 DS.SetTypeSpecError();
6409 const char *PrevSpec = nullptr;
6411 // Check for duplicate type specifiers (e.g. "int typeof(int)").
6412 if (DS.SetTypeSpecType(DeclSpec::TST_typeofType, StartLoc, PrevSpec,
6414 Actions.getASTContext().getPrintingPolicy()))
6415 Diag(StartLoc, DiagID) << PrevSpec;
6419 // If we get here, the operand to the typeof was an expresion.
6420 if (Operand.isInvalid()) {
6421 DS.SetTypeSpecError();
6425 // We might need to transform the operand if it is potentially evaluated.
6426 Operand = Actions.HandleExprEvaluationContextForTypeof(Operand.get());
6427 if (Operand.isInvalid()) {
6428 DS.SetTypeSpecError();
6432 const char *PrevSpec = nullptr;
6434 // Check for duplicate type specifiers (e.g. "int typeof(int)").
6435 if (DS.SetTypeSpecType(DeclSpec::TST_typeofExpr, StartLoc, PrevSpec,
6436 DiagID, Operand.get(),
6437 Actions.getASTContext().getPrintingPolicy()))
6438 Diag(StartLoc, DiagID) << PrevSpec;
6441 /// [C11] atomic-specifier:
6442 /// _Atomic ( type-name )
6444 void Parser::ParseAtomicSpecifier(DeclSpec &DS) {
6445 assert(Tok.is(tok::kw__Atomic) && NextToken().is(tok::l_paren) &&
6446 "Not an atomic specifier");
6448 SourceLocation StartLoc = ConsumeToken();
6449 BalancedDelimiterTracker T(*this, tok::l_paren);
6450 if (T.consumeOpen())
6453 TypeResult Result = ParseTypeName();
6454 if (Result.isInvalid()) {
6455 SkipUntil(tok::r_paren, StopAtSemi);
6462 if (T.getCloseLocation().isInvalid())
6465 DS.setTypeofParensRange(T.getRange());
6466 DS.SetRangeEnd(T.getCloseLocation());
6468 const char *PrevSpec = nullptr;
6470 if (DS.SetTypeSpecType(DeclSpec::TST_atomic, StartLoc, PrevSpec,
6471 DiagID, Result.get(),
6472 Actions.getASTContext().getPrintingPolicy()))
6473 Diag(StartLoc, DiagID) << PrevSpec;
6476 /// TryAltiVecVectorTokenOutOfLine - Out of line body that should only be called
6477 /// from TryAltiVecVectorToken.
6478 bool Parser::TryAltiVecVectorTokenOutOfLine() {
6479 Token Next = NextToken();
6480 switch (Next.getKind()) {
6481 default: return false;
6484 case tok::kw_signed:
6485 case tok::kw_unsigned:
6490 case tok::kw_double:
6492 case tok::kw___bool:
6493 case tok::kw___pixel:
6494 Tok.setKind(tok::kw___vector);
6496 case tok::identifier:
6497 if (Next.getIdentifierInfo() == Ident_pixel) {
6498 Tok.setKind(tok::kw___vector);
6501 if (Next.getIdentifierInfo() == Ident_bool) {
6502 Tok.setKind(tok::kw___vector);
6509 bool Parser::TryAltiVecTokenOutOfLine(DeclSpec &DS, SourceLocation Loc,
6510 const char *&PrevSpec, unsigned &DiagID,
6512 const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
6513 if (Tok.getIdentifierInfo() == Ident_vector) {
6514 Token Next = NextToken();
6515 switch (Next.getKind()) {
6518 case tok::kw_signed:
6519 case tok::kw_unsigned:
6524 case tok::kw_double:
6526 case tok::kw___bool:
6527 case tok::kw___pixel:
6528 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID, Policy);
6530 case tok::identifier:
6531 if (Next.getIdentifierInfo() == Ident_pixel) {
6532 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID,Policy);
6535 if (Next.getIdentifierInfo() == Ident_bool) {
6536 isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID,Policy);
6543 } else if ((Tok.getIdentifierInfo() == Ident_pixel) &&
6544 DS.isTypeAltiVecVector()) {
6545 isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID, Policy);
6547 } else if ((Tok.getIdentifierInfo() == Ident_bool) &&
6548 DS.isTypeAltiVecVector()) {
6549 isInvalid = DS.SetTypeAltiVecBool(true, Loc, PrevSpec, DiagID, Policy);