clang 10.0.0git

ParseDeclCXX.cpp
Go to the documentation of this file.
1 //===--- ParseDeclCXX.cpp - C++ Declaration Parsing -------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the C++ Declaration portions of the Parser interfaces.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "clang/Parse/Parser.h"
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/DeclTemplate.h"
16 #include "clang/AST/PrettyDeclStackTrace.h"
17 #include "clang/Basic/Attributes.h"
18 #include "clang/Basic/CharInfo.h"
19 #include "clang/Basic/OperatorKinds.h"
20 #include "clang/Basic/TargetInfo.h"
21 #include "clang/Parse/ParseDiagnostic.h"
22 #include "clang/Parse/RAIIObjectsForParser.h"
23 #include "clang/Sema/DeclSpec.h"
24 #include "clang/Sema/ParsedTemplate.h"
25 #include "clang/Sema/Scope.h"
26 #include "llvm/ADT/SmallString.h"
27 #include "llvm/Support/TimeProfiler.h"
28
29 using namespace clang;
30
31 /// ParseNamespace - We know that the current token is a namespace keyword. This
32 /// may either be a top level namespace or a block-level namespace alias. If
33 /// there was an inline keyword, it has already been parsed.
34 ///
35 /// namespace-definition: [C++: namespace.def]
36 /// named-namespace-definition
37 /// unnamed-namespace-definition
38 /// nested-namespace-definition
39 ///
40 /// named-namespace-definition:
41 /// 'inline'[opt] 'namespace' attributes[opt] identifier '{'
42 /// namespace-body '}'
43 ///
44 /// unnamed-namespace-definition:
45 /// 'inline'[opt] 'namespace' attributes[opt] '{' namespace-body '}'
46 ///
47 /// nested-namespace-definition:
48 /// 'namespace' enclosing-namespace-specifier '::' 'inline'[opt]
49 /// identifier '{' namespace-body '}'
50 ///
51 /// enclosing-namespace-specifier:
52 /// identifier
53 /// enclosing-namespace-specifier '::' 'inline'[opt] identifier
54 ///
55 /// namespace-alias-definition: [C++ 7.3.2: namespace.alias]
56 /// 'namespace' identifier '=' qualified-namespace-specifier ';'
57 ///
58 Parser::DeclGroupPtrTy Parser::ParseNamespace(DeclaratorContext Context,
59 SourceLocation &DeclEnd,
60 SourceLocation InlineLoc) {
61 assert(Tok.is(tok::kw_namespace) && "Not a namespace!");
62 SourceLocation NamespaceLoc = ConsumeToken(); // eat the 'namespace'.
63 ObjCDeclContextSwitch ObjCDC(*this);
64
65 if (Tok.is(tok::code_completion)) {
66 Actions.CodeCompleteNamespaceDecl(getCurScope());
67 cutOffParsing();
68 return nullptr;
69 }
70
71 SourceLocation IdentLoc;
72 IdentifierInfo *Ident = nullptr;
73 InnerNamespaceInfoList ExtraNSs;
74 SourceLocation FirstNestedInlineLoc;
75
76 ParsedAttributesWithRange attrs(AttrFactory);
77 SourceLocation attrLoc;
78 if (getLangOpts().CPlusPlus11 && isCXX11AttributeSpecifier()) {
79 Diag(Tok.getLocation(), getLangOpts().CPlusPlus17
80 ? diag::warn_cxx14_compat_ns_enum_attribute
81 : diag::ext_ns_enum_attribute)
82 << 0 /*namespace*/;
83 attrLoc = Tok.getLocation();
84 ParseCXX11Attributes(attrs);
85 }
86
87 if (Tok.is(tok::identifier)) {
88 Ident = Tok.getIdentifierInfo();
89 IdentLoc = ConsumeToken(); // eat the identifier.
90 while (Tok.is(tok::coloncolon) &&
91 (NextToken().is(tok::identifier) ||
92 (NextToken().is(tok::kw_inline) &&
93 GetLookAheadToken(2).is(tok::identifier)))) {
94
95 InnerNamespaceInfo Info;
96 Info.NamespaceLoc = ConsumeToken();
97
98 if (Tok.is(tok::kw_inline)) {
99 Info.InlineLoc = ConsumeToken();
100 if (FirstNestedInlineLoc.isInvalid())
101 FirstNestedInlineLoc = Info.InlineLoc;
102 }
103
104 Info.Ident = Tok.getIdentifierInfo();
105 Info.IdentLoc = ConsumeToken();
106
107 ExtraNSs.push_back(Info);
108 }
109 }
110
111 // A nested namespace definition cannot have attributes.
112 if (!ExtraNSs.empty() && attrLoc.isValid())
113 Diag(attrLoc, diag::err_unexpected_nested_namespace_attribute);
114
115 // Read label attributes, if present.
116 if (Tok.is(tok::kw___attribute)) {
117 attrLoc = Tok.getLocation();
118 ParseGNUAttributes(attrs);
119 }
120
121 if (Tok.is(tok::equal)) {
122 if (!Ident) {
123 Diag(Tok, diag::err_expected) << tok::identifier;
124 // Skip to end of the definition and eat the ';'.
125 SkipUntil(tok::semi);
126 return nullptr;
127 }
128 if (attrLoc.isValid())
129 Diag(attrLoc, diag::err_unexpected_namespace_attributes_alias);
130 if (InlineLoc.isValid())
131 Diag(InlineLoc, diag::err_inline_namespace_alias)
132 << FixItHint::CreateRemoval(InlineLoc);
133 Decl *NSAlias = ParseNamespaceAlias(NamespaceLoc, IdentLoc, Ident, DeclEnd);
134 return Actions.ConvertDeclToDeclGroup(NSAlias);
135 }
136
137 BalancedDelimiterTracker T(*this, tok::l_brace);
138 if (T.consumeOpen()) {
139 if (Ident)
140 Diag(Tok, diag::err_expected) << tok::l_brace;
141 else
142 Diag(Tok, diag::err_expected_either) << tok::identifier << tok::l_brace;
143 return nullptr;
144 }
145
146 if (getCurScope()->isClassScope() || getCurScope()->isTemplateParamScope() ||
147 getCurScope()->isInObjcMethodScope() || getCurScope()->getBlockParent() ||
148 getCurScope()->getFnParent()) {
149 Diag(T.getOpenLocation(), diag::err_namespace_nonnamespace_scope);
150 SkipUntil(tok::r_brace);
151 return nullptr;
152 }
153
154 if (ExtraNSs.empty()) {
155 // Normal namespace definition, not a nested-namespace-definition.
156 } else if (InlineLoc.isValid()) {
157 Diag(InlineLoc, diag::err_inline_nested_namespace_definition);
158 } else if (getLangOpts().CPlusPlus2a) {
159 Diag(ExtraNSs[0].NamespaceLoc,
160 diag::warn_cxx14_compat_nested_namespace_definition);
161 if (FirstNestedInlineLoc.isValid())
162 Diag(FirstNestedInlineLoc,
163 diag::warn_cxx17_compat_inline_nested_namespace_definition);
164 } else if (getLangOpts().CPlusPlus17) {
165 Diag(ExtraNSs[0].NamespaceLoc,
166 diag::warn_cxx14_compat_nested_namespace_definition);
167 if (FirstNestedInlineLoc.isValid())
168 Diag(FirstNestedInlineLoc, diag::ext_inline_nested_namespace_definition);
169 } else {
170 TentativeParsingAction TPA(*this);
171 SkipUntil(tok::r_brace, StopBeforeMatch);
172 Token rBraceToken = Tok;
173 TPA.Revert();
174
175 if (!rBraceToken.is(tok::r_brace)) {
176 Diag(ExtraNSs[0].NamespaceLoc, diag::ext_nested_namespace_definition)
177 << SourceRange(ExtraNSs.front().NamespaceLoc,
178 ExtraNSs.back().IdentLoc);
179 } else {
180 std::string NamespaceFix;
181 for (const auto &ExtraNS : ExtraNSs) {
182 NamespaceFix += " { ";
183 if (ExtraNS.InlineLoc.isValid())
184 NamespaceFix += "inline ";
185 NamespaceFix += "namespace ";
186 NamespaceFix += ExtraNS.Ident->getName();
187 }
188
189 std::string RBraces;
190 for (unsigned i = 0, e = ExtraNSs.size(); i != e; ++i)
191 RBraces += "} ";
192
193 Diag(ExtraNSs[0].NamespaceLoc, diag::ext_nested_namespace_definition)
194 << FixItHint::CreateReplacement(
195 SourceRange(ExtraNSs.front().NamespaceLoc,
196 ExtraNSs.back().IdentLoc),
197 NamespaceFix)
198 << FixItHint::CreateInsertion(rBraceToken.getLocation(), RBraces);
199 }
200
201 // Warn about nested inline namespaces.
202 if (FirstNestedInlineLoc.isValid())
203 Diag(FirstNestedInlineLoc, diag::ext_inline_nested_namespace_definition);
204 }
205
206 // If we're still good, complain about inline namespaces in non-C++0x now.
207 if (InlineLoc.isValid())
208 Diag(InlineLoc, getLangOpts().CPlusPlus11 ?
209 diag::warn_cxx98_compat_inline_namespace : diag::ext_inline_namespace);
210
211 // Enter a scope for the namespace.
212 ParseScope NamespaceScope(this, Scope::DeclScope);
213
214 UsingDirectiveDecl *ImplicitUsingDirectiveDecl = nullptr;
215 Decl *NamespcDecl = Actions.ActOnStartNamespaceDef(
216 getCurScope(), InlineLoc, NamespaceLoc, IdentLoc, Ident,
217 T.getOpenLocation(), attrs, ImplicitUsingDirectiveDecl);
218
219 PrettyDeclStackTraceEntry CrashInfo(Actions.Context, NamespcDecl,
220 NamespaceLoc, "parsing namespace");
221
222 // Parse the contents of the namespace. This includes parsing recovery on
223 // any improperly nested namespaces.
224 ParseInnerNamespace(ExtraNSs, 0, InlineLoc, attrs, T);
225
226 // Leave the namespace scope.
227 NamespaceScope.Exit();
228
229 DeclEnd = T.getCloseLocation();
230 Actions.ActOnFinishNamespaceDef(NamespcDecl, DeclEnd);
231
232 return Actions.ConvertDeclToDeclGroup(NamespcDecl,
233 ImplicitUsingDirectiveDecl);
234 }
235
236 /// ParseInnerNamespace - Parse the contents of a namespace.
237 void Parser::ParseInnerNamespace(const InnerNamespaceInfoList &InnerNSs,
238 unsigned int index, SourceLocation &InlineLoc,
239 ParsedAttributes &attrs,
240 BalancedDelimiterTracker &Tracker) {
241 if (index == InnerNSs.size()) {
242 while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
243 Tok.isNot(tok::eof)) {
244 ParsedAttributesWithRange attrs(AttrFactory);
245 MaybeParseCXX11Attributes(attrs);
246 ParseExternalDeclaration(attrs);
247 }
248
249 // The caller is what called check -- we are simply calling
250 // the close for it.
251 Tracker.consumeClose();
252
253 return;
254 }
255
256 // Handle a nested namespace definition.
257 // FIXME: Preserve the source information through to the AST rather than
258 // desugaring it here.
259 ParseScope NamespaceScope(this, Scope::DeclScope);
260 UsingDirectiveDecl *ImplicitUsingDirectiveDecl = nullptr;
261 Decl *NamespcDecl = Actions.ActOnStartNamespaceDef(
262 getCurScope(), InnerNSs[index].InlineLoc, InnerNSs[index].NamespaceLoc,
263 InnerNSs[index].IdentLoc, InnerNSs[index].Ident,
264 Tracker.getOpenLocation(), attrs, ImplicitUsingDirectiveDecl);
265 assert(!ImplicitUsingDirectiveDecl &&
266 "nested namespace definition cannot define anonymous namespace");
267
268 ParseInnerNamespace(InnerNSs, ++index, InlineLoc, attrs, Tracker);
269
270 NamespaceScope.Exit();
271 Actions.ActOnFinishNamespaceDef(NamespcDecl, Tracker.getCloseLocation());
272 }
273
274 /// ParseNamespaceAlias - Parse the part after the '=' in a namespace
275 /// alias definition.
276 ///
277 Decl *Parser::ParseNamespaceAlias(SourceLocation NamespaceLoc,
278 SourceLocation AliasLoc,
279 IdentifierInfo *Alias,
280 SourceLocation &DeclEnd) {
281 assert(Tok.is(tok::equal) && "Not equal token");
282
283 ConsumeToken(); // eat the '='.
284
285 if (Tok.is(tok::code_completion)) {
286 Actions.CodeCompleteNamespaceAliasDecl(getCurScope());
287 cutOffParsing();
288 return nullptr;
289 }
290
291 CXXScopeSpec SS;
292 // Parse (optional) nested-name-specifier.
293 ParseOptionalCXXScopeSpecifier(SS, nullptr, /*EnteringContext=*/false,
294 /*MayBePseudoDestructor=*/nullptr,
295 /*IsTypename=*/false,
296 /*LastII=*/nullptr,
297 /*OnlyNamespace=*/true);
298
299 if (Tok.isNot(tok::identifier)) {
300 Diag(Tok, diag::err_expected_namespace_name);
301 // Skip to end of the definition and eat the ';'.
302 SkipUntil(tok::semi);
303 return nullptr;
304 }
305
306 if (SS.isInvalid()) {
307 // Diagnostics have been emitted in ParseOptionalCXXScopeSpecifier.
308 // Skip to end of the definition and eat the ';'.
309 SkipUntil(tok::semi);
310 return nullptr;
311 }
312
313 // Parse identifier.
314 IdentifierInfo *Ident = Tok.getIdentifierInfo();
315 SourceLocation IdentLoc = ConsumeToken();
316
317 // Eat the ';'.
318 DeclEnd = Tok.getLocation();
319 if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after_namespace_name))
320 SkipUntil(tok::semi);
321
322 return Actions.ActOnNamespaceAliasDef(getCurScope(), NamespaceLoc, AliasLoc,
323 Alias, SS, IdentLoc, Ident);
324 }
325
326 /// ParseLinkage - We know that the current token is a string_literal
327 /// and just before that, that extern was seen.
328 ///
329 /// linkage-specification: [C++ 7.5p2: dcl.link]
330 /// 'extern' string-literal '{' declaration-seq[opt] '}'
331 /// 'extern' string-literal declaration
332 ///
333 Decl *Parser::ParseLinkage(ParsingDeclSpec &DS, DeclaratorContext Context) {
334 assert(isTokenStringLiteral() && "Not a string literal!");
335 ExprResult Lang = ParseStringLiteralExpression(false);
336
337 ParseScope LinkageScope(this, Scope::DeclScope);
338 Decl *LinkageSpec =
339 Lang.isInvalid()
340 ? nullptr
341 : Actions.ActOnStartLinkageSpecification(
342 getCurScope(), DS.getSourceRange().getBegin(), Lang.get(),
343 Tok.is(tok::l_brace) ? Tok.getLocation() : SourceLocation());
344
345 ParsedAttributesWithRange attrs(AttrFactory);
346 MaybeParseCXX11Attributes(attrs);
347
348 if (Tok.isNot(tok::l_brace)) {
349 // Reset the source range in DS, as the leading "extern"
350 // does not really belong to the inner declaration ...
351 DS.SetRangeStart(SourceLocation());
352 DS.SetRangeEnd(SourceLocation());
353 // ... but anyway remember that such an "extern" was seen.
354 DS.setExternInLinkageSpec(true);
355 ParseExternalDeclaration(attrs, &DS);
356 return LinkageSpec ? Actions.ActOnFinishLinkageSpecification(
357 getCurScope(), LinkageSpec, SourceLocation())
358 : nullptr;
359 }
360
361 DS.abort();
362
363 ProhibitAttributes(attrs);
364
365 BalancedDelimiterTracker T(*this, tok::l_brace);
366 T.consumeOpen();
367
368 unsigned NestedModules = 0;
369 while (true) {
370 switch (Tok.getKind()) {
371 case tok::annot_module_begin:
372 ++NestedModules;
373 ParseTopLevelDecl();
374 continue;
375
376 case tok::annot_module_end:
377 if (!NestedModules)
378 break;
379 --NestedModules;
380 ParseTopLevelDecl();
381 continue;
382
383 case tok::annot_module_include:
384 ParseTopLevelDecl();
385 continue;
386
387 case tok::eof:
388 break;
389
390 case tok::r_brace:
391 if (!NestedModules)
392 break;
393 LLVM_FALLTHROUGH;
394 default:
395 ParsedAttributesWithRange attrs(AttrFactory);
396 MaybeParseCXX11Attributes(attrs);
397 ParseExternalDeclaration(attrs);
398 continue;
399 }
400
401 break;
402 }
403
404 T.consumeClose();
405 return LinkageSpec ? Actions.ActOnFinishLinkageSpecification(
406 getCurScope(), LinkageSpec, T.getCloseLocation())
407 : nullptr;
408 }
409
410 /// Parse a C++ Modules TS export-declaration.
411 ///
412 /// export-declaration:
413 /// 'export' declaration
414 /// 'export' '{' declaration-seq[opt] '}'
415 ///
416 Decl *Parser::ParseExportDeclaration() {
417 assert(Tok.is(tok::kw_export));
418 SourceLocation ExportLoc = ConsumeToken();
419
420 ParseScope ExportScope(this, Scope::DeclScope);
421 Decl *ExportDecl = Actions.ActOnStartExportDecl(
422 getCurScope(), ExportLoc,
423 Tok.is(tok::l_brace) ? Tok.getLocation() : SourceLocation());
424
425 if (Tok.isNot(tok::l_brace)) {
426 // FIXME: Factor out a ParseExternalDeclarationWithAttrs.
427 ParsedAttributesWithRange Attrs(AttrFactory);
428 MaybeParseCXX11Attributes(Attrs);
429 MaybeParseMicrosoftAttributes(Attrs);
430 ParseExternalDeclaration(Attrs);
431 return Actions.ActOnFinishExportDecl(getCurScope(), ExportDecl,
432 SourceLocation());
433 }
434
435 BalancedDelimiterTracker T(*this, tok::l_brace);
436 T.consumeOpen();
437
438 // The Modules TS draft says "An export-declaration shall declare at least one
439 // entity", but the intent is that it shall contain at least one declaration.
440 if (Tok.is(tok::r_brace) && getLangOpts().ModulesTS) {
441 Diag(ExportLoc, diag::err_export_empty)
442 << SourceRange(ExportLoc, Tok.getLocation());
443 }
444
445 while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
446 Tok.isNot(tok::eof)) {
447 ParsedAttributesWithRange Attrs(AttrFactory);
448 MaybeParseCXX11Attributes(Attrs);
449 MaybeParseMicrosoftAttributes(Attrs);
450 ParseExternalDeclaration(Attrs);
451 }
452
453 T.consumeClose();
454 return Actions.ActOnFinishExportDecl(getCurScope(), ExportDecl,
455 T.getCloseLocation());
456 }
457
458 /// ParseUsingDirectiveOrDeclaration - Parse C++ using using-declaration or
459 /// using-directive. Assumes that current token is 'using'.
460 Parser::DeclGroupPtrTy
461 Parser::ParseUsingDirectiveOrDeclaration(DeclaratorContext Context,
462 const ParsedTemplateInfo &TemplateInfo,
463 SourceLocation &DeclEnd,
464 ParsedAttributesWithRange &attrs) {
465 assert(Tok.is(tok::kw_using) && "Not using token");
466 ObjCDeclContextSwitch ObjCDC(*this);
467
468 // Eat 'using'.
469 SourceLocation UsingLoc = ConsumeToken();
470
471 if (Tok.is(tok::code_completion)) {
472 Actions.CodeCompleteUsing(getCurScope());
473 cutOffParsing();
474 return nullptr;
475 }
476
477 // Consume unexpected 'template' keywords.
478 while (Tok.is(tok::kw_template)) {
479 SourceLocation TemplateLoc = ConsumeToken();
480 Diag(TemplateLoc, diag::err_unexpected_template_after_using)
481 << FixItHint::CreateRemoval(TemplateLoc);
482 }
483
484 // 'using namespace' means this is a using-directive.
485 if (Tok.is(tok::kw_namespace)) {
486 // Template parameters are always an error here.
487 if (TemplateInfo.Kind) {
488 SourceRange R = TemplateInfo.getSourceRange();
489 Diag(UsingLoc, diag::err_templated_using_directive_declaration)
490 << 0 /* directive */ << R << FixItHint::CreateRemoval(R);
491 }
492
493 Decl *UsingDir = ParseUsingDirective(Context, UsingLoc, DeclEnd, attrs);
494 return Actions.ConvertDeclToDeclGroup(UsingDir);
495 }
496
497 // Otherwise, it must be a using-declaration or an alias-declaration.
498
499 // Using declarations can't have attributes.
500 ProhibitAttributes(attrs);
501
502 return ParseUsingDeclaration(Context, TemplateInfo, UsingLoc, DeclEnd,
503 AS_none);
504 }
505
506 /// ParseUsingDirective - Parse C++ using-directive, assumes
507 /// that current token is 'namespace' and 'using' was already parsed.
508 ///
509 /// using-directive: [C++ 7.3.p4: namespace.udir]
510 /// 'using' 'namespace' ::[opt] nested-name-specifier[opt]
511 /// namespace-name ;
512 /// [GNU] using-directive:
513 /// 'using' 'namespace' ::[opt] nested-name-specifier[opt]
514 /// namespace-name attributes[opt] ;
515 ///
516 Decl *Parser::ParseUsingDirective(DeclaratorContext Context,
517 SourceLocation UsingLoc,
518 SourceLocation &DeclEnd,
519 ParsedAttributes &attrs) {
520 assert(Tok.is(tok::kw_namespace) && "Not 'namespace' token");
521
522 // Eat 'namespace'.
523 SourceLocation NamespcLoc = ConsumeToken();
524
525 if (Tok.is(tok::code_completion)) {
526 Actions.CodeCompleteUsingDirective(getCurScope());
527 cutOffParsing();
528 return nullptr;
529 }
530
531 CXXScopeSpec SS;
532 // Parse (optional) nested-name-specifier.
533 ParseOptionalCXXScopeSpecifier(SS, nullptr, /*EnteringContext=*/false,
534 /*MayBePseudoDestructor=*/nullptr,
535 /*IsTypename=*/false,
536 /*LastII=*/nullptr,
537 /*OnlyNamespace=*/true);
538
539 IdentifierInfo *NamespcName = nullptr;
540 SourceLocation IdentLoc = SourceLocation();
541
542 // Parse namespace-name.
543 if (Tok.isNot(tok::identifier)) {
544 Diag(Tok, diag::err_expected_namespace_name);
545 // If there was invalid namespace name, skip to end of decl, and eat ';'.
546 SkipUntil(tok::semi);
547 // FIXME: Are there cases, when we would like to call ActOnUsingDirective?
548 return nullptr;
549 }
550
551 if (SS.isInvalid()) {
552 // Diagnostics have been emitted in ParseOptionalCXXScopeSpecifier.
553 // Skip to end of the definition and eat the ';'.
554 SkipUntil(tok::semi);
555 return nullptr;
556 }
557
558 // Parse identifier.
559 NamespcName = Tok.getIdentifierInfo();
560 IdentLoc = ConsumeToken();
561
562 // Parse (optional) attributes (most likely GNU strong-using extension).
563 bool GNUAttr = false;
564 if (Tok.is(tok::kw___attribute)) {
565 GNUAttr = true;
566 ParseGNUAttributes(attrs);
567 }
568
569 // Eat ';'.
570 DeclEnd = Tok.getLocation();
571 if (ExpectAndConsume(tok::semi,
572 GNUAttr ? diag::err_expected_semi_after_attribute_list
573 : diag::err_expected_semi_after_namespace_name))
574 SkipUntil(tok::semi);
575
576 return Actions.ActOnUsingDirective(getCurScope(), UsingLoc, NamespcLoc, SS,
577 IdentLoc, NamespcName, attrs);
578 }
579
580 /// Parse a using-declarator (or the identifier in a C++11 alias-declaration).
581 ///
582 /// using-declarator:
583 /// 'typename'[opt] nested-name-specifier unqualified-id
584 ///
585 bool Parser::ParseUsingDeclarator(DeclaratorContext Context,
586 UsingDeclarator &D) {
587 D.clear();
588
589 // Ignore optional 'typename'.
590 // FIXME: This is wrong; we should parse this as a typename-specifier.
591 TryConsumeToken(tok::kw_typename, D.TypenameLoc);
592
593 if (Tok.is(tok::kw___super)) {
594 Diag(Tok.getLocation(), diag::err_super_in_using_declaration);
595 return true;
596 }
597
598 // Parse nested-name-specifier.
599 IdentifierInfo *LastII = nullptr;
600 if (ParseOptionalCXXScopeSpecifier(D.SS, nullptr, /*EnteringContext=*/false,
601 /*MayBePseudoDtor=*/nullptr,
602 /*IsTypename=*/false,
603 /*LastII=*/&LastII,
604 /*OnlyNamespace=*/false,
605 /*InUsingDeclaration=*/true))
606
607 return true;
608 if (D.SS.isInvalid())
609 return true;
610
611 // Parse the unqualified-id. We allow parsing of both constructor and
612 // destructor names and allow the action module to diagnose any semantic
613 // errors.
614 //
615 // C++11 [class.qual]p2:
616 // [...] in a using-declaration that is a member-declaration, if the name
617 // specified after the nested-name-specifier is the same as the identifier
618 // or the simple-template-id's template-name in the last component of the
619 // nested-name-specifier, the name is [...] considered to name the
620 // constructor.
621 if (getLangOpts().CPlusPlus11 &&
622 Context == DeclaratorContext::MemberContext &&
623 Tok.is(tok::identifier) &&
624 (NextToken().is(tok::semi) || NextToken().is(tok::comma) ||
625 NextToken().is(tok::ellipsis)) &&
626 D.SS.isNotEmpty() && LastII == Tok.getIdentifierInfo() &&
627 !D.SS.getScopeRep()->getAsNamespace() &&
628 !D.SS.getScopeRep()->getAsNamespaceAlias()) {
629 SourceLocation IdLoc = ConsumeToken();
630 ParsedType Type =
631 Actions.getInheritingConstructorName(D.SS, IdLoc, *LastII);
632 D.Name.setConstructorName(Type, IdLoc, IdLoc);
633 } else {
634 if (ParseUnqualifiedId(
635 D.SS, /*EnteringContext=*/false,
636 /*AllowDestructorName=*/true,
637 /*AllowConstructorName=*/!(Tok.is(tok::identifier) &&
638 NextToken().is(tok::equal)),
639 /*AllowDeductionGuide=*/false,
640 nullptr, nullptr, D.Name))
641 return true;
642 }
643
644 if (TryConsumeToken(tok::ellipsis, D.EllipsisLoc))
645 Diag(Tok.getLocation(), getLangOpts().CPlusPlus17 ?
646 diag::warn_cxx17_compat_using_declaration_pack :
647 diag::ext_using_declaration_pack);
648
649 return false;
650 }
651
652 /// ParseUsingDeclaration - Parse C++ using-declaration or alias-declaration.
653 /// Assumes that 'using' was already seen.
654 ///
655 /// using-declaration: [C++ 7.3.p3: namespace.udecl]
656 /// 'using' using-declarator-list[opt] ;
657 ///
658 /// using-declarator-list: [C++1z]
659 /// using-declarator '...'[opt]
660 /// using-declarator-list ',' using-declarator '...'[opt]
661 ///
662 /// using-declarator-list: [C++98-14]
663 /// using-declarator
664 ///
665 /// alias-declaration: C++11 [dcl.dcl]p1
666 /// 'using' identifier attribute-specifier-seq[opt] = type-id ;
667 ///
668 Parser::DeclGroupPtrTy
669 Parser::ParseUsingDeclaration(DeclaratorContext Context,
670 const ParsedTemplateInfo &TemplateInfo,
671 SourceLocation UsingLoc, SourceLocation &DeclEnd,
672 AccessSpecifier AS) {
673 // Check for misplaced attributes before the identifier in an
674 // alias-declaration.
675 ParsedAttributesWithRange MisplacedAttrs(AttrFactory);
676 MaybeParseCXX11Attributes(MisplacedAttrs);
677
678 UsingDeclarator D;
679 bool InvalidDeclarator = ParseUsingDeclarator(Context, D);
680
681 ParsedAttributesWithRange Attrs(AttrFactory);
682 MaybeParseGNUAttributes(Attrs);
683 MaybeParseCXX11Attributes(Attrs);
684
685 // Maybe this is an alias-declaration.
686 if (Tok.is(tok::equal)) {
687 if (InvalidDeclarator) {
688 SkipUntil(tok::semi);
689 return nullptr;
690 }
691
692 // If we had any misplaced attributes from earlier, this is where they
693 // should have been written.
694 if (MisplacedAttrs.Range.isValid()) {
695 Diag(MisplacedAttrs.Range.getBegin(), diag::err_attributes_not_allowed)
696 << FixItHint::CreateInsertionFromRange(
697 Tok.getLocation(),
698 CharSourceRange::getTokenRange(MisplacedAttrs.Range))
699 << FixItHint::CreateRemoval(MisplacedAttrs.Range);
700 Attrs.takeAllFrom(MisplacedAttrs);
701 }
702
703 Decl *DeclFromDeclSpec = nullptr;
704 Decl *AD = ParseAliasDeclarationAfterDeclarator(
705 TemplateInfo, UsingLoc, D, DeclEnd, AS, Attrs, &DeclFromDeclSpec);
706 return Actions.ConvertDeclToDeclGroup(AD, DeclFromDeclSpec);
707 }
708
709 // C++11 attributes are not allowed on a using-declaration, but GNU ones
710 // are.
711 ProhibitAttributes(MisplacedAttrs);
712 ProhibitAttributes(Attrs);
713
714 // Diagnose an attempt to declare a templated using-declaration.
715 // In C++11, alias-declarations can be templates:
716 // template <...> using id = type;
717 if (TemplateInfo.Kind) {
718 SourceRange R = TemplateInfo.getSourceRange();
719 Diag(UsingLoc, diag::err_templated_using_directive_declaration)
720 << 1 /* declaration */ << R << FixItHint::CreateRemoval(R);
721
722 // Unfortunately, we have to bail out instead of recovering by
723 // ignoring the parameters, just in case the nested name specifier
724 // depends on the parameters.
725 return nullptr;
726 }
727
728 SmallVector<Decl *, 8> DeclsInGroup;
729 while (true) {
730 // Parse (optional) attributes (most likely GNU strong-using extension).
731 MaybeParseGNUAttributes(Attrs);
732
733 if (InvalidDeclarator)
734 SkipUntil(tok::comma, tok::semi, StopBeforeMatch);
735 else {
736 // "typename" keyword is allowed for identifiers only,
737 // because it may be a type definition.
738 if (D.TypenameLoc.isValid() &&
739 D.Name.getKind() != UnqualifiedIdKind::IK_Identifier) {
740 Diag(D.Name.getSourceRange().getBegin(),
741 diag::err_typename_identifiers_only)
742 << FixItHint::CreateRemoval(SourceRange(D.TypenameLoc));
743 // Proceed parsing, but discard the typename keyword.
744 D.TypenameLoc = SourceLocation();
745 }
746
747 Decl *UD = Actions.ActOnUsingDeclaration(getCurScope(), AS, UsingLoc,
748 D.TypenameLoc, D.SS, D.Name,
749 D.EllipsisLoc, Attrs);
750 if (UD)
751 DeclsInGroup.push_back(UD);
752 }
753
754 if (!TryConsumeToken(tok::comma))
755 break;
756
757 // Parse another using-declarator.
758 Attrs.clear();
759 InvalidDeclarator = ParseUsingDeclarator(Context, D);
760 }
761
762 if (DeclsInGroup.size() > 1)
763 Diag(Tok.getLocation(), getLangOpts().CPlusPlus17 ?
764 diag::warn_cxx17_compat_multi_using_declaration :
765 diag::ext_multi_using_declaration);
766
767 // Eat ';'.
768 DeclEnd = Tok.getLocation();
769 if (ExpectAndConsume(tok::semi, diag::err_expected_after,
770 !Attrs.empty() ? "attributes list"
771 : "using declaration"))
772 SkipUntil(tok::semi);
773
774 return Actions.BuildDeclaratorGroup(DeclsInGroup);
775 }
776
777 Decl *Parser::ParseAliasDeclarationAfterDeclarator(
778 const ParsedTemplateInfo &TemplateInfo, SourceLocation UsingLoc,
779 UsingDeclarator &D, SourceLocation &DeclEnd, AccessSpecifier AS,
780 ParsedAttributes &Attrs, Decl **OwnedType) {
781 if (ExpectAndConsume(tok::equal)) {
782 SkipUntil(tok::semi);
783 return nullptr;
784 }
785
786 Diag(Tok.getLocation(), getLangOpts().CPlusPlus11 ?
787 diag::warn_cxx98_compat_alias_declaration :
788 diag::ext_alias_declaration);
789
790 // Type alias templates cannot be specialized.
791 int SpecKind = -1;
792 if (TemplateInfo.Kind == ParsedTemplateInfo::Template &&
793 D.Name.getKind() == UnqualifiedIdKind::IK_TemplateId)
794 SpecKind = 0;
795 if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization)
796 SpecKind = 1;
797 if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation)
798 SpecKind = 2;
799 if (SpecKind != -1) {
800 SourceRange Range;
801 if (SpecKind == 0)
802 Range = SourceRange(D.Name.TemplateId->LAngleLoc,
803 D.Name.TemplateId->RAngleLoc);
804 else
805 Range = TemplateInfo.getSourceRange();
806 Diag(Range.getBegin(), diag::err_alias_declaration_specialization)
807 << SpecKind << Range;
808 SkipUntil(tok::semi);
809 return nullptr;
810 }
811
812 // Name must be an identifier.
813 if (D.Name.getKind() != UnqualifiedIdKind::IK_Identifier) {
814 Diag(D.Name.StartLocation, diag::err_alias_declaration_not_identifier);
815 // No removal fixit: can't recover from this.
816 SkipUntil(tok::semi);
817 return nullptr;
818 } else if (D.TypenameLoc.isValid())
819 Diag(D.TypenameLoc, diag::err_alias_declaration_not_identifier)
820 << FixItHint::CreateRemoval(SourceRange(
821 D.TypenameLoc,
822 D.SS.isNotEmpty() ? D.SS.getEndLoc() : D.TypenameLoc));
823 else if (D.SS.isNotEmpty())
824 Diag(D.SS.getBeginLoc(), diag::err_alias_declaration_not_identifier)
825 << FixItHint::CreateRemoval(D.SS.getRange());
826 if (D.EllipsisLoc.isValid())
827 Diag(D.EllipsisLoc, diag::err_alias_declaration_pack_expansion)
828 << FixItHint::CreateRemoval(SourceRange(D.EllipsisLoc));
829
830 Decl *DeclFromDeclSpec = nullptr;
831 TypeResult TypeAlias = ParseTypeName(
832 nullptr,
833 TemplateInfo.Kind ? DeclaratorContext::AliasTemplateContext
834 : DeclaratorContext::AliasDeclContext,
835 AS, &DeclFromDeclSpec, &Attrs);
836 if (OwnedType)
837 *OwnedType = DeclFromDeclSpec;
838
839 // Eat ';'.
840 DeclEnd = Tok.getLocation();
841 if (ExpectAndConsume(tok::semi, diag::err_expected_after,
842 !Attrs.empty() ? "attributes list"
843 : "alias declaration"))
844 SkipUntil(tok::semi);
845
846 TemplateParameterLists *TemplateParams = TemplateInfo.TemplateParams;
847 MultiTemplateParamsArg TemplateParamsArg(
848 TemplateParams ? TemplateParams->data() : nullptr,
849 TemplateParams ? TemplateParams->size() : 0);
850 return Actions.ActOnAliasDeclaration(getCurScope(), AS, TemplateParamsArg,
851 UsingLoc, D.Name, Attrs, TypeAlias,
852 DeclFromDeclSpec);
853 }
854
855 /// ParseStaticAssertDeclaration - Parse C++0x or C11 static_assert-declaration.
856 ///
857 /// [C++0x] static_assert-declaration:
858 /// static_assert ( constant-expression , string-literal ) ;
859 ///
860 /// [C11] static_assert-declaration:
861 /// _Static_assert ( constant-expression , string-literal ) ;
862 ///
863 Decl *Parser::ParseStaticAssertDeclaration(SourceLocation &DeclEnd){
864 assert(Tok.isOneOf(tok::kw_static_assert, tok::kw__Static_assert) &&
865 "Not a static_assert declaration");
866
867 if (Tok.is(tok::kw__Static_assert) && !getLangOpts().C11)
868 Diag(Tok, diag::ext_c11_feature) << Tok.getName();
869 if (Tok.is(tok::kw_static_assert))
870 Diag(Tok, diag::warn_cxx98_compat_static_assert);
871
872 SourceLocation StaticAssertLoc = ConsumeToken();
873
874 BalancedDelimiterTracker T(*this, tok::l_paren);
875 if (T.consumeOpen()) {
876 Diag(Tok, diag::err_expected) << tok::l_paren;
877 SkipMalformedDecl();
878 return nullptr;
879 }
880
881 EnterExpressionEvaluationContext ConstantEvaluated(
882 Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
883 ExprResult AssertExpr(ParseConstantExpressionInExprEvalContext());
884 if (AssertExpr.isInvalid()) {
885 SkipMalformedDecl();
886 return nullptr;
887 }
888
889 ExprResult AssertMessage;
890 if (Tok.is(tok::r_paren)) {
891 Diag(Tok, getLangOpts().CPlusPlus17
892 ? diag::warn_cxx14_compat_static_assert_no_message
893 : diag::ext_static_assert_no_message)
894 << (getLangOpts().CPlusPlus17
895 ? FixItHint()
896 : FixItHint::CreateInsertion(Tok.getLocation(), ", \"\""));
897 } else {
898 if (ExpectAndConsume(tok::comma)) {
899 SkipUntil(tok::semi);
900 return nullptr;
901 }
902
903 if (!isTokenStringLiteral()) {
904 Diag(Tok, diag::err_expected_string_literal)
905 << /*Source='static_assert'*/1;
906 SkipMalformedDecl();
907 return nullptr;
908 }
909
910 AssertMessage = ParseStringLiteralExpression();
911 if (AssertMessage.isInvalid()) {
912 SkipMalformedDecl();
913 return nullptr;
914 }
915 }
916
917 T.consumeClose();
918
919 DeclEnd = Tok.getLocation();
920 ExpectAndConsumeSemi(diag::err_expected_semi_after_static_assert);
921
922 return Actions.ActOnStaticAssertDeclaration(StaticAssertLoc,
923 AssertExpr.get(),
924 AssertMessage.get(),
925 T.getCloseLocation());
926 }
927
928 /// ParseDecltypeSpecifier - Parse a C++11 decltype specifier.
929 ///
930 /// 'decltype' ( expression )
931 /// 'decltype' ( 'auto' ) [C++1y]
932 ///
933 SourceLocation Parser::ParseDecltypeSpecifier(DeclSpec &DS) {
934 assert(Tok.isOneOf(tok::kw_decltype, tok::annot_decltype)
935 && "Not a decltype specifier");
936
937 ExprResult Result;
938 SourceLocation StartLoc = Tok.getLocation();
939 SourceLocation EndLoc;
940
941 if (Tok.is(tok::annot_decltype)) {
942 Result = getExprAnnotation(Tok);
943 EndLoc = Tok.getAnnotationEndLoc();
944 ConsumeAnnotationToken();
945 if (Result.isInvalid()) {
946 DS.SetTypeSpecError();
947 return EndLoc;
948 }
949 } else {
950 if (Tok.getIdentifierInfo()->isStr("decltype"))
951 Diag(Tok, diag::warn_cxx98_compat_decltype);
952
953 ConsumeToken();
954
955 BalancedDelimiterTracker T(*this, tok::l_paren);
956 if (T.expectAndConsume(diag::err_expected_lparen_after,
957 "decltype", tok::r_paren)) {
958 DS.SetTypeSpecError();
959 return T.getOpenLocation() == Tok.getLocation() ?
960 StartLoc : T.getOpenLocation();
961 }
962
963 // Check for C++1y 'decltype(auto)'.
964 if (Tok.is(tok::kw_auto)) {
965 // No need to disambiguate here: an expression can't start with 'auto',
966 // because the typename-specifier in a function-style cast operation can't
967 // be 'auto'.
968 Diag(Tok.getLocation(),
969 getLangOpts().CPlusPlus14
970 ? diag::warn_cxx11_compat_decltype_auto_type_specifier
971 : diag::ext_decltype_auto_type_specifier);
972 ConsumeToken();
973 } else {
974 // Parse the expression
975
976 // C++11 [dcl.type.simple]p4:
977 // The operand of the decltype specifier is an unevaluated operand.
978 EnterExpressionEvaluationContext Unevaluated(
979 Actions, Sema::ExpressionEvaluationContext::Unevaluated, nullptr,
980 Sema::ExpressionEvaluationContextRecord::EK_Decltype);
981 Result =
982 Actions.CorrectDelayedTyposInExpr(ParseExpression(), [](Expr *E) {
983 return E->hasPlaceholderType() ? ExprError() : E;
984 });
985 if (Result.isInvalid()) {
986 DS.SetTypeSpecError();
987 if (SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch)) {
988 EndLoc = ConsumeParen();
989 } else {
990 if (PP.isBacktrackEnabled() && Tok.is(tok::semi)) {
991 // Backtrack to get the location of the last token before the semi.
992 PP.RevertCachedTokens(2);
993 ConsumeToken(); // the semi.
994 EndLoc = ConsumeAnyToken();
995 assert(Tok.is(tok::semi));
996 } else {
997 EndLoc = Tok.getLocation();
998 }
999 }
1000 return EndLoc;
1001 }
1002
1003 Result = Actions.ActOnDecltypeExpression(Result.get());
1004 }
1005
1006 // Match the ')'
1007 T.consumeClose();
1008 if (T.getCloseLocation().isInvalid()) {
1009 DS.SetTypeSpecError();
1010 // FIXME: this should return the location of the last token
1011 // that was consumed (by "consumeClose()")
1012 return T.getCloseLocation();
1013 }
1014
1015 if (Result.isInvalid()) {
1016 DS.SetTypeSpecError();
1017 return T.getCloseLocation();
1018 }
1019
1020 EndLoc = T.getCloseLocation();
1021 }
1022 assert(!Result.isInvalid());
1023
1024 const char *PrevSpec = nullptr;
1025 unsigned DiagID;
1026 const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
1027 // Check for duplicate type specifiers (e.g. "int decltype(a)").
1028 if (Result.get()
1029 ? DS.SetTypeSpecType(DeclSpec::TST_decltype, StartLoc, PrevSpec,
1030 DiagID, Result.get(), Policy)
1031 : DS.SetTypeSpecType(DeclSpec::TST_decltype_auto, StartLoc, PrevSpec,
1032 DiagID, Policy)) {
1033 Diag(StartLoc, DiagID) << PrevSpec;
1034 DS.SetTypeSpecError();
1035 }
1036 return EndLoc;
1037 }
1038
1039 void Parser::AnnotateExistingDecltypeSpecifier(const DeclSpec& DS,
1040 SourceLocation StartLoc,
1041 SourceLocation EndLoc) {
1042 // make sure we have a token we can turn into an annotation token
1043 if (PP.isBacktrackEnabled())
1044 PP.RevertCachedTokens(1);
1045 else
1046 PP.EnterToken(Tok, /*IsReinject*/true);
1047
1048 Tok.setKind(tok::annot_decltype);
1049 setExprAnnotation(Tok,
1050 DS.getTypeSpecType() == TST_decltype ? DS.getRepAsExpr() :
1051 DS.getTypeSpecType() == TST_decltype_auto ? ExprResult() :
1052 ExprError());
1053 Tok.setAnnotationEndLoc(EndLoc);
1054 Tok.setLocation(StartLoc);
1055 PP.AnnotateCachedTokens(Tok);
1056 }
1057
1058 void Parser::ParseUnderlyingTypeSpecifier(DeclSpec &DS) {
1059 assert(Tok.is(tok::kw___underlying_type) &&
1060 "Not an underlying type specifier");
1061
1062 SourceLocation StartLoc = ConsumeToken();
1063 BalancedDelimiterTracker T(*this, tok::l_paren);
1064 if (T.expectAndConsume(diag::err_expected_lparen_after,
1065 "__underlying_type", tok::r_paren)) {
1066 return;
1067 }
1068
1069 TypeResult Result = ParseTypeName();
1070 if (Result.isInvalid()) {
1071 SkipUntil(tok::r_paren, StopAtSemi);
1072 return;
1073 }
1074
1075 // Match the ')'
1076 T.consumeClose();
1077 if (T.getCloseLocation().isInvalid())
1078 return;
1079
1080 const char *PrevSpec = nullptr;
1081 unsigned DiagID;
1082 if (DS.SetTypeSpecType(DeclSpec::TST_underlyingType, StartLoc, PrevSpec,
1083 DiagID, Result.get(),
1084 Actions.getASTContext().getPrintingPolicy()))
1085 Diag(StartLoc, DiagID) << PrevSpec;
1086 DS.setTypeofParensRange(T.getRange());
1087 }
1088
1089 /// ParseBaseTypeSpecifier - Parse a C++ base-type-specifier which is either a
1090 /// class name or decltype-specifier. Note that we only check that the result
1091 /// names a type; semantic analysis will need to verify that the type names a
1092 /// class. The result is either a type or null, depending on whether a type
1093 /// name was found.
1094 ///
1095 /// base-type-specifier: [C++11 class.derived]
1096 /// class-or-decltype
1097 /// class-or-decltype: [C++11 class.derived]
1098 /// nested-name-specifier[opt] class-name
1099 /// decltype-specifier
1100 /// class-name: [C++ class.name]
1101 /// identifier
1102 /// simple-template-id
1103 ///
1104 /// In C++98, instead of base-type-specifier, we have:
1105 ///
1106 /// ::[opt] nested-name-specifier[opt] class-name
1107 TypeResult Parser::ParseBaseTypeSpecifier(SourceLocation &BaseLoc,
1108 SourceLocation &EndLocation) {
1109 // Ignore attempts to use typename
1110 if (Tok.is(tok::kw_typename)) {
1111 Diag(Tok, diag::err_expected_class_name_not_template)
1112 << FixItHint::CreateRemoval(Tok.getLocation());
1113 ConsumeToken();
1114 }
1115
1116 // Parse optional nested-name-specifier
1117 CXXScopeSpec SS;
1118 if (ParseOptionalCXXScopeSpecifier(SS, nullptr, /*EnteringContext=*/false))
1119 return true;
1120
1121 BaseLoc = Tok.getLocation();
1122
1123 // Parse decltype-specifier
1124 // tok == kw_decltype is just error recovery, it can only happen when SS
1125 // isn't empty
1126 if (Tok.isOneOf(tok::kw_decltype, tok::annot_decltype)) {
1127 if (SS.isNotEmpty())
1128 Diag(SS.getBeginLoc(), diag::err_unexpected_scope_on_base_decltype)
1129 << FixItHint::CreateRemoval(SS.getRange());
1130 // Fake up a Declarator to use with ActOnTypeName.
1131 DeclSpec DS(AttrFactory);
1132
1133 EndLocation = ParseDecltypeSpecifier(DS);
1134
1135 Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
1136 return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
1137 }
1138
1139 // Check whether we have a template-id that names a type.
1140 if (Tok.is(tok::annot_template_id)) {
1141 TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
1142 if (TemplateId->Kind == TNK_Type_template ||
1143 TemplateId->Kind == TNK_Dependent_template_name ||
1144 TemplateId->Kind == TNK_Undeclared_template) {
1145 AnnotateTemplateIdTokenAsType(SS, /*IsClassName*/true);
1146
1147 assert(Tok.is(tok::annot_typename) && "template-id -> type failed");
1148 ParsedType Type = getTypeAnnotation(Tok);
1149 EndLocation = Tok.getAnnotationEndLoc();
1150 ConsumeAnnotationToken();
1151
1152 if (Type)
1153 return Type;
1154 return true;
1155 }
1156
1157 // Fall through to produce an error below.
1158 }
1159
1160 if (Tok.isNot(tok::identifier)) {
1161 Diag(Tok, diag::err_expected_class_name);
1162 return true;
1163 }
1164
1165 IdentifierInfo *Id = Tok.getIdentifierInfo();
1166 SourceLocation IdLoc = ConsumeToken();
1167
1168 if (Tok.is(tok::less)) {
1169 // It looks the user intended to write a template-id here, but the
1170 // template-name was wrong. Try to fix that.
1171 TemplateNameKind TNK = TNK_Type_template;
1172 TemplateTy Template;
1173 if (!Actions.DiagnoseUnknownTemplateName(*Id, IdLoc, getCurScope(),
1174 &SS, Template, TNK)) {
1175 Diag(IdLoc, diag::err_unknown_template_name)
1176 << Id;
1177 }
1178
1179 if (!Template) {
1180 TemplateArgList TemplateArgs;
1181 SourceLocation LAngleLoc, RAngleLoc;
1182 ParseTemplateIdAfterTemplateName(true, LAngleLoc, TemplateArgs,
1183 RAngleLoc);
1184 return true;
1185 }
1186
1187 // Form the template name
1188 UnqualifiedId TemplateName;
1189 TemplateName.setIdentifier(Id, IdLoc);
1190
1191 // Parse the full template-id, then turn it into a type.
1192 if (AnnotateTemplateIdToken(Template, TNK, SS, SourceLocation(),
1193 TemplateName))
1194 return true;
1195 if (TNK == TNK_Type_template || TNK == TNK_Dependent_template_name)
1196 AnnotateTemplateIdTokenAsType(SS, /*IsClassName*/true);
1197
1198 // If we didn't end up with a typename token, there's nothing more we
1199 // can do.
1200 if (Tok.isNot(tok::annot_typename))
1201 return true;
1202
1203 // Retrieve the type from the annotation token, consume that token, and
1204 // return.
1205 EndLocation = Tok.getAnnotationEndLoc();
1206 ParsedType Type = getTypeAnnotation(Tok);
1207 ConsumeAnnotationToken();
1208 return Type;
1209 }
1210
1211 // We have an identifier; check whether it is actually a type.
1212 IdentifierInfo *CorrectedII = nullptr;
1213 ParsedType Type = Actions.getTypeName(
1214 *Id, IdLoc, getCurScope(), &SS, /*isClassName=*/true, false, nullptr,
1215 /*IsCtorOrDtorName=*/false,
1216 /*WantNontrivialTypeSourceInfo=*/true,
1217 /*IsClassTemplateDeductionContext*/ false, &CorrectedII);
1218 if (!Type) {
1219 Diag(IdLoc, diag::err_expected_class_name);
1220 return true;
1221 }
1222
1223 // Consume the identifier.
1224 EndLocation = IdLoc;
1225
1226 // Fake up a Declarator to use with ActOnTypeName.
1227 DeclSpec DS(AttrFactory);
1228 DS.SetRangeStart(IdLoc);
1229 DS.SetRangeEnd(EndLocation);
1230 DS.getTypeSpecScope() = SS;
1231
1232 const char *PrevSpec = nullptr;
1233 unsigned DiagID;
1234 DS.SetTypeSpecType(TST_typename, IdLoc, PrevSpec, DiagID, Type,
1235 Actions.getASTContext().getPrintingPolicy());
1236
1237 Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
1238 return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
1239 }
1240
1241 void Parser::ParseMicrosoftInheritanceClassAttributes(ParsedAttributes &attrs) {
1242 while (Tok.isOneOf(tok::kw___single_inheritance,
1243 tok::kw___multiple_inheritance,
1244 tok::kw___virtual_inheritance)) {
1245 IdentifierInfo *AttrName = Tok.getIdentifierInfo();
1246 SourceLocation AttrNameLoc = ConsumeToken();
1247 attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
1248 ParsedAttr::AS_Keyword);
1249 }
1250 }
1251
1252 /// Determine whether the following tokens are valid after a type-specifier
1253 /// which could be a standalone declaration. This will conservatively return
1254 /// true if there's any doubt, and is appropriate for insert-';' fixits.
1255 bool Parser::isValidAfterTypeSpecifier(bool CouldBeBitfield) {
1256 // This switch enumerates the valid "follow" set for type-specifiers.
1257 switch (Tok.getKind()) {
1258 default: break;
1259 case tok::semi: // struct foo {...} ;
1260 case tok::star: // struct foo {...} * P;
1261 case tok::amp: // struct foo {...} & R = ...
1262 case tok::ampamp: // struct foo {...} && R = ...
1263 case tok::identifier: // struct foo {...} V ;
1264 case tok::r_paren: //(struct foo {...} ) {4}
1265 case tok::coloncolon: // struct foo {...} :: a::b;
1266 case tok::annot_cxxscope: // struct foo {...} a:: b;
1267 case tok::annot_typename: // struct foo {...} a ::b;
1268 case tok::annot_template_id: // struct foo {...} a<int> ::b;
1269 case tok::kw_decltype: // struct foo {...} decltype (a)::b;
1270 case tok::l_paren: // struct foo {...} ( x);
1271 case tok::comma: // __builtin_offsetof(struct foo{...} ,
1272 case tok::kw_operator: // struct foo operator ++() {...}
1273 case tok::kw___declspec: // struct foo {...} __declspec(...)
1274 case tok::l_square: // void f(struct f [ 3])
1275 case tok::ellipsis: // void f(struct f ... [Ns])
1276 // FIXME: we should emit semantic diagnostic when declaration
1277 // attribute is in type attribute position.
1278 case tok::kw___attribute: // struct foo __attribute__((used)) x;
1279 case tok::annot_pragma_pack: // struct foo {...} _Pragma(pack(pop));
1280 // struct foo {...} _Pragma(section(...));
1281 case tok::annot_pragma_ms_pragma:
1282 // struct foo {...} _Pragma(vtordisp(pop));
1283 case tok::annot_pragma_ms_vtordisp:
1284 // struct foo {...} _Pragma(pointers_to_members(...));
1285 case tok::annot_pragma_ms_pointers_to_members:
1286 return true;
1287 case tok::colon:
1288 return CouldBeBitfield; // enum E { ... } : 2;
1289 // Microsoft compatibility
1290 case tok::kw___cdecl: // struct foo {...} __cdecl x;
1291 case tok::kw___fastcall: // struct foo {...} __fastcall x;
1292 case tok::kw___stdcall: // struct foo {...} __stdcall x;
1293 case tok::kw___thiscall: // struct foo {...} __thiscall x;
1294 case tok::kw___vectorcall: // struct foo {...} __vectorcall x;
1295 // We will diagnose these calling-convention specifiers on non-function
1296 // declarations later, so claim they are valid after a type specifier.
1297 return getLangOpts().MicrosoftExt;
1298 // Type qualifiers
1299 case tok::kw_const: // struct foo {...} const x;
1300 case tok::kw_volatile: // struct foo {...} volatile x;
1301 case tok::kw_restrict: // struct foo {...} restrict x;
1302 case tok::kw__Atomic: // struct foo {...} _Atomic x;
1303 case tok::kw___unaligned: // struct foo {...} __unaligned *x;
1304 // Function specifiers
1305 // Note, no 'explicit'. An explicit function must be either a conversion
1306 // operator or a constructor. Either way, it can't have a return type.
1307 case tok::kw_inline: // struct foo inline f();
1308 case tok::kw_virtual: // struct foo virtual f();
1309 case tok::kw_friend: // struct foo friend f();
1310 // Storage-class specifiers
1311 case tok::kw_static: // struct foo {...} static x;
1312 case tok::kw_extern: // struct foo {...} extern x;
1313 case tok::kw_typedef: // struct foo {...} typedef x;
1314 case tok::kw_register: // struct foo {...} register x;
1315 case tok::kw_auto: // struct foo {...} auto x;
1316 case tok::kw_mutable: // struct foo {...} mutable x;
1317 case tok::kw_thread_local: // struct foo {...} thread_local x;
1318 case tok::kw_constexpr: // struct foo {...} constexpr x;
1319 case tok::kw_consteval: // struct foo {...} consteval x;
1320 case tok::kw_constinit: // struct foo {...} constinit x;
1321 // As shown above, type qualifiers and storage class specifiers absolutely
1322 // can occur after class specifiers according to the grammar. However,
1323 // almost no one actually writes code like this. If we see one of these,
1324 // it is much more likely that someone missed a semi colon and the
1325 // type/storage class specifier we're seeing is part of the *next*
1326 // intended declaration, as in:
1327 //
1328 // struct foo { ... }
1329 // typedef int X;
1330 //
1331 // We'd really like to emit a missing semicolon error instead of emitting
1332 // an error on the 'int' saying that you can't have two type specifiers in
1333 // the same declaration of X. Because of this, we look ahead past this
1334 // token to see if it's a type specifier. If so, we know the code is
1335 // otherwise invalid, so we can produce the expected semi error.
1336 if (!isKnownToBeTypeSpecifier(NextToken()))
1337 return true;
1338 break;
1339 case tok::r_brace: // struct bar { struct foo {...} }
1340 // Missing ';' at end of struct is accepted as an extension in C mode.
1341 if (!getLangOpts().CPlusPlus)
1342 return true;
1343 break;
1344 case tok::greater:
1345 // template<class T = class X>
1346 return getLangOpts().CPlusPlus;
1347 }
1348 return false;
1349 }
1350
1351 /// ParseClassSpecifier - Parse a C++ class-specifier [C++ class] or
1352 /// elaborated-type-specifier [C++ dcl.type.elab]; we can't tell which
1353 /// until we reach the start of a definition or see a token that
1354 /// cannot start a definition.
1355 ///
1356 /// class-specifier: [C++ class]
1357 /// class-head '{' member-specification[opt] '}'
1358 /// class-head '{' member-specification[opt] '}' attributes[opt]
1359 /// class-head:
1360 /// class-key identifier[opt] base-clause[opt]
1361 /// class-key nested-name-specifier identifier base-clause[opt]
1362 /// class-key nested-name-specifier[opt] simple-template-id
1363 /// base-clause[opt]
1364 /// [GNU] class-key attributes[opt] identifier[opt] base-clause[opt]
1365 /// [GNU] class-key attributes[opt] nested-name-specifier
1366 /// identifier base-clause[opt]
1367 /// [GNU] class-key attributes[opt] nested-name-specifier[opt]
1368 /// simple-template-id base-clause[opt]
1369 /// class-key:
1370 /// 'class'
1371 /// 'struct'
1372 /// 'union'
1373 ///
1374 /// elaborated-type-specifier: [C++ dcl.type.elab]
1375 /// class-key ::[opt] nested-name-specifier[opt] identifier
1376 /// class-key ::[opt] nested-name-specifier[opt] 'template'[opt]
1377 /// simple-template-id
1378 ///
1379 /// Note that the C++ class-specifier and elaborated-type-specifier,
1380 /// together, subsume the C99 struct-or-union-specifier:
1381 ///
1382 /// struct-or-union-specifier: [C99 6.7.2.1]
1383 /// struct-or-union identifier[opt] '{' struct-contents '}'
1384 /// struct-or-union identifier
1385 /// [GNU] struct-or-union attributes[opt] identifier[opt] '{' struct-contents
1386 /// '}' attributes[opt]
1387 /// [GNU] struct-or-union attributes[opt] identifier
1388 /// struct-or-union:
1389 /// 'struct'
1390 /// 'union'
1391 void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind,
1392 SourceLocation StartLoc, DeclSpec &DS,
1393 const ParsedTemplateInfo &TemplateInfo,
1394 AccessSpecifier AS,
1395 bool EnteringContext, DeclSpecContext DSC,
1396 ParsedAttributesWithRange &Attributes) {
1397 DeclSpec::TST TagType;
1398 if (TagTokKind == tok::kw_struct)
1399 TagType = DeclSpec::TST_struct;
1400 else if (TagTokKind == tok::kw___interface)
1401 TagType = DeclSpec::TST_interface;
1402 else if (TagTokKind == tok::kw_class)
1403 TagType = DeclSpec::TST_class;
1404 else {
1405 assert(TagTokKind == tok::kw_union && "Not a class specifier");
1406 TagType = DeclSpec::TST_union;
1407 }
1408
1409 if (Tok.is(tok::code_completion)) {
1410 // Code completion for a struct, class, or union name.
1411 Actions.CodeCompleteTag(getCurScope(), TagType);
1412 return cutOffParsing();
1413 }
1414
1415 // C++03 [temp.explicit] 14.7.2/8:
1416 // The usual access checking rules do not apply to names used to specify
1417 // explicit instantiations.
1418 //
1419 // As an extension we do not perform access checking on the names used to
1420 // specify explicit specializations either. This is important to allow
1421 // specializing traits classes for private types.
1422 //
1423 // Note that we don't suppress if this turns out to be an elaborated
1424 // type specifier.
1425 bool shouldDelayDiagsInTag =
1426 (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
1427 TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
1428 SuppressAccessChecks diagsFromTag(*this, shouldDelayDiagsInTag);
1429
1430 ParsedAttributesWithRange attrs(AttrFactory);
1431 // If attributes exist after tag, parse them.
1432 MaybeParseGNUAttributes(attrs);
1433 MaybeParseMicrosoftDeclSpecs(attrs);
1434
1435 // Parse inheritance specifiers.
1436 if (Tok.isOneOf(tok::kw___single_inheritance,
1437 tok::kw___multiple_inheritance,
1438 tok::kw___virtual_inheritance))
1439 ParseMicrosoftInheritanceClassAttributes(attrs);
1440
1441 // If C++0x attributes exist here, parse them.
1442 // FIXME: Are we consistent with the ordering of parsing of different
1443 // styles of attributes?
1444 MaybeParseCXX11Attributes(attrs);
1445
1446 // Source location used by FIXIT to insert misplaced
1447 // C++11 attributes
1448 SourceLocation AttrFixitLoc = Tok.getLocation();
1449
1450 if (TagType == DeclSpec::TST_struct &&
1451 Tok.isNot(tok::identifier) &&
1452 !Tok.isAnnotation() &&
1453 Tok.getIdentifierInfo() &&
1454 Tok.isOneOf(tok::kw___is_abstract,
1455 tok::kw___is_aggregate,
1456 tok::kw___is_arithmetic,
1457 tok::kw___is_array,
1458 tok::kw___is_assignable,
1459 tok::kw___is_base_of,
1460 tok::kw___is_class,
1461 tok::kw___is_complete_type,
1462 tok::kw___is_compound,
1463 tok::kw___is_const,
1464 tok::kw___is_constructible,
1465 tok::kw___is_convertible,
1466 tok::kw___is_convertible_to,
1467 tok::kw___is_destructible,
1468 tok::kw___is_empty,
1469 tok::kw___is_enum,
1470 tok::kw___is_floating_point,
1471 tok::kw___is_final,
1472 tok::kw___is_function,
1473 tok::kw___is_fundamental,
1474 tok::kw___is_integral,
1475 tok::kw___is_interface_class,
1476 tok::kw___is_literal,
1477 tok::kw___is_lvalue_expr,
1478 tok::kw___is_lvalue_reference,
1479 tok::kw___is_member_function_pointer,
1480 tok::kw___is_member_object_pointer,
1481 tok::kw___is_member_pointer,
1482 tok::kw___is_nothrow_assignable,
1483 tok::kw___is_nothrow_constructible,
1484 tok::kw___is_nothrow_destructible,
1485 tok::kw___is_object,
1486 tok::kw___is_pod,
1487 tok::kw___is_pointer,
1488 tok::kw___is_polymorphic,
1489 tok::kw___is_reference,
1490 tok::kw___is_rvalue_expr,
1491 tok::kw___is_rvalue_reference,
1492 tok::kw___is_same,
1493 tok::kw___is_scalar,
1494 tok::kw___is_sealed,
1495 tok::kw___is_signed,
1496 tok::kw___is_standard_layout,
1497 tok::kw___is_trivial,
1498 tok::kw___is_trivially_assignable,
1499 tok::kw___is_trivially_constructible,
1500 tok::kw___is_trivially_copyable,
1501 tok::kw___is_union,
1502 tok::kw___is_unsigned,
1503 tok::kw___is_void,
1504 tok::kw___is_volatile))
1505 // GNU libstdc++ 4.2 and libc++ use certain intrinsic names as the
1506 // name of struct templates, but some are keywords in GCC >= 4.3
1507 // and Clang. Therefore, when we see the token sequence "struct
1508 // X", make X into a normal identifier rather than a keyword, to
1509 // allow libstdc++ 4.2 and libc++ to work properly.
1510 TryKeywordIdentFallback(true);
1511
1512 struct PreserveAtomicIdentifierInfoRAII {
1513 PreserveAtomicIdentifierInfoRAII(Token &Tok, bool Enabled)
1514 : AtomicII(nullptr) {
1515 if (!Enabled)
1516 return;
1517 assert(Tok.is(tok::kw__Atomic));
1518 AtomicII = Tok.getIdentifierInfo();
1519 AtomicII->revertTokenIDToIdentifier();
1520 Tok.setKind(tok::identifier);
1521 }
1522 ~PreserveAtomicIdentifierInfoRAII() {
1523 if (!AtomicII)
1524 return;
1525 AtomicII->revertIdentifierToTokenID(tok::kw__Atomic);
1526 }
1527 IdentifierInfo *AtomicII;
1528 };
1529
1530 // HACK: MSVC doesn't consider _Atomic to be a keyword and its STL
1531 // implementation for VS2013 uses _Atomic as an identifier for one of the
1532 // classes in <atomic>. When we are parsing 'struct _Atomic', don't consider
1533 // '_Atomic' to be a keyword. We are careful to undo this so that clang can
1534 // use '_Atomic' in its own header files.
1535 bool ShouldChangeAtomicToIdentifier = getLangOpts().MSVCCompat &&
1536 Tok.is(tok::kw__Atomic) &&
1537 TagType == DeclSpec::TST_struct;
1538 PreserveAtomicIdentifierInfoRAII AtomicTokenGuard(
1539 Tok, ShouldChangeAtomicToIdentifier);
1540
1541 // Parse the (optional) nested-name-specifier.
1542 CXXScopeSpec &SS = DS.getTypeSpecScope();
1543 if (getLangOpts().CPlusPlus) {
1544 // "FOO : BAR" is not a potential typo for "FOO::BAR". In this context it
1545 // is a base-specifier-list.
1546 ColonProtectionRAIIObject X(*this);
1547
1548 CXXScopeSpec Spec;
1549 bool HasValidSpec = true;
1550 if (ParseOptionalCXXScopeSpecifier(Spec, nullptr, EnteringContext)) {
1551 DS.SetTypeSpecError();
1552 HasValidSpec = false;
1553 }
1554 if (Spec.isSet())
1555 if (Tok.isNot(tok::identifier) && Tok.isNot(tok::annot_template_id)) {
1556 Diag(Tok, diag::err_expected) << tok::identifier;
1557 HasValidSpec = false;
1558 }
1559 if (HasValidSpec)
1560 SS = Spec;
1561 }
1562
1563 TemplateParameterLists *TemplateParams = TemplateInfo.TemplateParams;
1564
1565 auto RecoverFromUndeclaredTemplateName = [&](IdentifierInfo *Name,
1566 SourceLocation NameLoc,
1567 SourceRange TemplateArgRange,
1568 bool KnownUndeclared) {
1569 Diag(NameLoc, diag::err_explicit_spec_non_template)
1570 << (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation)
1571 << TagTokKind << Name << TemplateArgRange << KnownUndeclared;
1572
1573 // Strip off the last template parameter list if it was empty, since
1574 // we've removed its template argument list.
1575 if (TemplateParams && TemplateInfo.LastParameterListWasEmpty) {
1576 if (TemplateParams->size() > 1) {
1577 TemplateParams->pop_back();
1578 } else {
1579 TemplateParams = nullptr;
1580 const_cast<ParsedTemplateInfo &>(TemplateInfo).Kind =
1581 ParsedTemplateInfo::NonTemplate;
1582 }
1583 } else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
1584 // Pretend this is just a forward declaration.
1585 TemplateParams = nullptr;
1586 const_cast<ParsedTemplateInfo &>(TemplateInfo).Kind =
1587 ParsedTemplateInfo::NonTemplate;
1588 const_cast<ParsedTemplateInfo &>(TemplateInfo).TemplateLoc =
1589 SourceLocation();
1590 const_cast<ParsedTemplateInfo &>(TemplateInfo).ExternLoc =
1591 SourceLocation();
1592 }
1593 };
1594
1595 // Parse the (optional) class name or simple-template-id.
1596 IdentifierInfo *Name = nullptr;
1597 SourceLocation NameLoc;
1598 TemplateIdAnnotation *TemplateId = nullptr;
1599 if (Tok.is(tok::identifier)) {
1600 Name = Tok.getIdentifierInfo();
1601 NameLoc = ConsumeToken();
1602
1603 if (Tok.is(tok::less) && getLangOpts().CPlusPlus) {
1604 // The name was supposed to refer to a template, but didn't.
1605 // Eat the template argument list and try to continue parsing this as
1606 // a class (or template thereof).
1607 TemplateArgList TemplateArgs;
1608 SourceLocation LAngleLoc, RAngleLoc;
1609 if (ParseTemplateIdAfterTemplateName(true, LAngleLoc, TemplateArgs,
1610 RAngleLoc)) {
1611 // We couldn't parse the template argument list at all, so don't
1612 // try to give any location information for the list.
1613 LAngleLoc = RAngleLoc = SourceLocation();
1614 }
1615 RecoverFromUndeclaredTemplateName(
1616 Name, NameLoc, SourceRange(LAngleLoc, RAngleLoc), false);
1617 }
1618 } else if (Tok.is(tok::annot_template_id)) {
1619 TemplateId = takeTemplateIdAnnotation(Tok);
1620 NameLoc = ConsumeAnnotationToken();
1621
1622 if (TemplateId->Kind == TNK_Undeclared_template) {
1623 // Try to resolve the template name to a type template.
1624 Actions.ActOnUndeclaredTypeTemplateName(getCurScope(), TemplateId->Template,
1625 TemplateId->Kind, NameLoc, Name);
1626 if (TemplateId->Kind == TNK_Undeclared_template) {
1627 RecoverFromUndeclaredTemplateName(
1628 Name, NameLoc,
1629 SourceRange(TemplateId->LAngleLoc, TemplateId->RAngleLoc), true);
1630 TemplateId = nullptr;
1631 }
1632 }
1633
1634 if (TemplateId && TemplateId->Kind != TNK_Type_template &&
1635 TemplateId->Kind != TNK_Dependent_template_name) {
1636 // The template-name in the simple-template-id refers to
1637 // something other than a class template. Give an appropriate
1638 // error message and skip to the ';'.
1639 SourceRange Range(NameLoc);
1640 if (SS.isNotEmpty())
1641 Range.setBegin(SS.getBeginLoc());
1642
1643 // FIXME: Name may be null here.
1644 Diag(TemplateId->LAngleLoc, diag::err_template_spec_syntax_non_template)
1645 << TemplateId->Name << static_cast<int>(TemplateId->Kind) << Range;
1646
1647 DS.SetTypeSpecError();
1648 SkipUntil(tok::semi, StopBeforeMatch);
1649 return;
1650 }
1651 }
1652
1653 // There are four options here.
1654 // - If we are in a trailing return type, this is always just a reference,
1655 // and we must not try to parse a definition. For instance,
1656 // [] () -> struct S { };
1657 // does not define a type.
1658 // - If we have 'struct foo {...', 'struct foo :...',
1659 // 'struct foo final :' or 'struct foo final {', then this is a definition.
1660 // - If we have 'struct foo;', then this is either a forward declaration
1661 // or a friend declaration, which have to be treated differently.
1662 // - Otherwise we have something like 'struct foo xyz', a reference.
1663 //
1664 // We also detect these erroneous cases to provide better diagnostic for
1665 // C++11 attributes parsing.
1666 // - attributes follow class name:
1667 // struct foo [[]] {};
1668 // - attributes appear before or after 'final':
1669 // struct foo [[]] final [[]] {};
1670 //
1671 // However, in type-specifier-seq's, things look like declarations but are
1672 // just references, e.g.
1673 // new struct s;
1674 // or
1675 // &T::operator struct s;
1676 // For these, DSC is DeclSpecContext::DSC_type_specifier or
1677 // DeclSpecContext::DSC_alias_declaration.
1678
1679 // If there are attributes after class name, parse them.
1680 MaybeParseCXX11Attributes(Attributes);
1681
1682 const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
1683 Sema::TagUseKind TUK;
1684 if (DSC == DeclSpecContext::DSC_trailing)
1685 TUK = Sema::TUK_Reference;
1686 else if (Tok.is(tok::l_brace) ||
1687 (getLangOpts().CPlusPlus && Tok.is(tok::colon)) ||
1688 (isCXX11FinalKeyword() &&
1689 (NextToken().is(tok::l_brace) || NextToken().is(tok::colon)))) {
1690 if (DS.isFriendSpecified()) {
1691 // C++ [class.friend]p2:
1692 // A class shall not be defined in a friend declaration.
1693 Diag(Tok.getLocation(), diag::err_friend_decl_defines_type)
1694 << SourceRange(DS.getFriendSpecLoc());
1695
1696 // Skip everything up to the semicolon, so that this looks like a proper
1697 // friend class (or template thereof) declaration.
1698 SkipUntil(tok::semi, StopBeforeMatch);
1699 TUK = Sema::TUK_Friend;
1700 } else {
1701 // Okay, this is a class definition.
1702 TUK = Sema::TUK_Definition;
1703 }
1704 } else if (isCXX11FinalKeyword() && (NextToken().is(tok::l_square) ||
1705 NextToken().is(tok::kw_alignas))) {
1706 // We can't tell if this is a definition or reference
1707 // until we skipped the 'final' and C++11 attribute specifiers.
1708 TentativeParsingAction PA(*this);
1709
1710 // Skip the 'final' keyword.
1711 ConsumeToken();
1712
1713 // Skip C++11 attribute specifiers.
1714 while (true) {
1715 if (Tok.is(tok::l_square) && NextToken().is(tok::l_square)) {
1716 ConsumeBracket();
1717 if (!SkipUntil(tok::r_square, StopAtSemi))
1718 break;
1719 } else if (Tok.is(tok::kw_alignas) && NextToken().is(tok::l_paren)) {
1720 ConsumeToken();
1721 ConsumeParen();
1722 if (!SkipUntil(tok::r_paren, StopAtSemi))
1723 break;
1724 } else {
1725 break;
1726 }
1727 }
1728
1729 if (Tok.isOneOf(tok::l_brace, tok::colon))
1730 TUK = Sema::TUK_Definition;
1731 else
1732 TUK = Sema::TUK_Reference;
1733
1734 PA.Revert();
1735 } else if (!isTypeSpecifier(DSC) &&
1736 (Tok.is(tok::semi) ||
1737 (Tok.isAtStartOfLine() && !isValidAfterTypeSpecifier(false)))) {
1738 TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration;
1739 if (Tok.isNot(tok::semi)) {
1740 const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy();
1741 // A semicolon was missing after this declaration. Diagnose and recover.
1742 ExpectAndConsume(tok::semi, diag::err_expected_after,
1743 DeclSpec::getSpecifierName(TagType, PPol));
1744 PP.EnterToken(Tok, /*IsReinject*/true);
1745 Tok.setKind(tok::semi);
1746 }
1747 } else
1748 TUK = Sema::TUK_Reference;
1749
1750 // Forbid misplaced attributes. In cases of a reference, we pass attributes
1751 // to caller to handle.
1752 if (TUK != Sema::TUK_Reference) {
1753 // If this is not a reference, then the only possible
1754 // valid place for C++11 attributes to appear here
1755 // is between class-key and class-name. If there are
1756 // any attributes after class-name, we try a fixit to move
1757 // them to the right place.
1758 SourceRange AttrRange = Attributes.Range;
1759 if (AttrRange.isValid()) {
1760 Diag(AttrRange.getBegin(), diag::err_attributes_not_allowed)
1761 << AttrRange
1762 << FixItHint::CreateInsertionFromRange(AttrFixitLoc,
1763 CharSourceRange(AttrRange, true))
1764 << FixItHint::CreateRemoval(AttrRange);
1765
1766 // Recover by adding misplaced attributes to the attribute list
1767 // of the class so they can be applied on the class later.
1768 attrs.takeAllFrom(Attributes);
1769 }
1770 }
1771
1772 // If this is an elaborated type specifier, and we delayed
1773 // diagnostics before, just merge them into the current pool.
1774 if (shouldDelayDiagsInTag) {
1775 diagsFromTag.done();
1776 if (TUK == Sema::TUK_Reference)
1777 diagsFromTag.redelay();
1778 }
1779
1780 if (!Name && !TemplateId && (DS.getTypeSpecType() == DeclSpec::TST_error ||
1781 TUK != Sema::TUK_Definition)) {
1782 if (DS.getTypeSpecType() != DeclSpec::TST_error) {
1783 // We have a declaration or reference to an anonymous class.
1784 Diag(StartLoc, diag::err_anon_type_definition)
1785 << DeclSpec::getSpecifierName(TagType, Policy);
1786 }
1787
1788 // If we are parsing a definition and stop at a base-clause, continue on
1789 // until the semicolon. Continuing from the comma will just trick us into
1790 // thinking we are seeing a variable declaration.
1791 if (TUK == Sema::TUK_Definition && Tok.is(tok::colon))
1792 SkipUntil(tok::semi, StopBeforeMatch);
1793 else
1794 SkipUntil(tok::comma, StopAtSemi);
1795 return;
1796 }
1797
1798 // Create the tag portion of the class or class template.
1799 DeclResult TagOrTempResult = true; // invalid
1800 TypeResult TypeResult = true; // invalid
1801
1802 bool Owned = false;
1803 Sema::SkipBodyInfo SkipBody;
1804 if (TemplateId) {
1805 // Explicit specialization, class template partial specialization,
1806 // or explicit instantiation.
1807 ASTTemplateArgsPtr TemplateArgsPtr(TemplateId->getTemplateArgs(),
1808 TemplateId->NumArgs);
1809 if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
1810 TUK == Sema::TUK_Declaration) {
1811 // This is an explicit instantiation of a class template.
1812 ProhibitAttributes(attrs);
1813
1814 TagOrTempResult = Actions.ActOnExplicitInstantiation(
1815 getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc,
1816 TagType, StartLoc, SS, TemplateId->Template,
1817 TemplateId->TemplateNameLoc, TemplateId->LAngleLoc, TemplateArgsPtr,
1818 TemplateId->RAngleLoc, attrs);
1819
1820 // Friend template-ids are treated as references unless
1821 // they have template headers, in which case they're ill-formed
1822 // (FIXME: "template <class T> friend class A<T>::B<int>;").
1823 // We diagnose this error in ActOnClassTemplateSpecialization.
1824 } else if (TUK == Sema::TUK_Reference ||
1825 (TUK == Sema::TUK_Friend &&
1826 TemplateInfo.Kind == ParsedTemplateInfo::NonTemplate)) {
1827 ProhibitAttributes(attrs);
1828 TypeResult = Actions.ActOnTagTemplateIdType(TUK, TagType, StartLoc,
1829 SS,
1830 TemplateId->TemplateKWLoc,
1831 TemplateId->Template,
1832 TemplateId->TemplateNameLoc,
1833 TemplateId->LAngleLoc,
1834 TemplateArgsPtr,
1835 TemplateId->RAngleLoc);
1836 } else {
1837 // This is an explicit specialization or a class template
1838 // partial specialization.
1839 TemplateParameterLists FakedParamLists;
1840 if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
1841 // This looks like an explicit instantiation, because we have
1842 // something like
1843 //
1844 // template class Foo<X>
1845 //
1846 // but it actually has a definition. Most likely, this was
1847 // meant to be an explicit specialization, but the user forgot
1848 // the '<>' after 'template'.
1849 // It this is friend declaration however, since it cannot have a
1850 // template header, it is most likely that the user meant to
1851 // remove the 'template' keyword.
1852 assert((TUK == Sema::TUK_Definition || TUK == Sema::TUK_Friend) &&
1853 "Expected a definition here");
1854
1855 if (TUK == Sema::TUK_Friend) {
1856 Diag(DS.getFriendSpecLoc(), diag::err_friend_explicit_instantiation);
1857 TemplateParams = nullptr;
1858 } else {
1859 SourceLocation LAngleLoc =
1860 PP.getLocForEndOfToken(TemplateInfo.TemplateLoc);
1861 Diag(TemplateId->TemplateNameLoc,
1862 diag::err_explicit_instantiation_with_definition)
1863 << SourceRange(TemplateInfo.TemplateLoc)
1864 << FixItHint::CreateInsertion(LAngleLoc, "<>");
1865
1866 // Create a fake template parameter list that contains only
1867 // "template<>", so that we treat this construct as a class
1868 // template specialization.
1869 FakedParamLists.push_back(Actions.ActOnTemplateParameterList(
1870 0, SourceLocation(), TemplateInfo.TemplateLoc, LAngleLoc, None,
1871 LAngleLoc, nullptr));
1872 TemplateParams = &FakedParamLists;
1873 }
1874 }
1875
1876 // Build the class template specialization.
1877 TagOrTempResult = Actions.ActOnClassTemplateSpecialization(
1878 getCurScope(), TagType, TUK, StartLoc, DS.getModulePrivateSpecLoc(),
1879 SS, *TemplateId, attrs,
1880 MultiTemplateParamsArg(TemplateParams ? &(*TemplateParams)[0]
1881 : nullptr,
1882 TemplateParams ? TemplateParams->size() : 0),
1883 &SkipBody);
1884 }
1885 } else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
1886 TUK == Sema::TUK_Declaration) {
1887 // Explicit instantiation of a member of a class template
1888 // specialization, e.g.,
1889 //
1890 // template struct Outer<int>::Inner;
1891 //
1892 ProhibitAttributes(attrs);
1893
1894 TagOrTempResult = Actions.ActOnExplicitInstantiation(
1895 getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc,
1896 TagType, StartLoc, SS, Name, NameLoc, attrs);
1897 } else if (TUK == Sema::TUK_Friend &&
1898 TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate) {
1899 ProhibitAttributes(attrs);
1900
1901 TagOrTempResult = Actions.ActOnTemplatedFriendTag(
1902 getCurScope(), DS.getFriendSpecLoc(), TagType, StartLoc, SS, Name,
1903 NameLoc, attrs,
1904 MultiTemplateParamsArg(TemplateParams ? &(*TemplateParams)[0] : nullptr,
1905 TemplateParams ? TemplateParams->size() : 0));
1906 } else {
1907 if (TUK != Sema::TUK_Declaration && TUK != Sema::TUK_Definition)
1908 ProhibitAttributes(attrs);
1909
1910 if (TUK == Sema::TUK_Definition &&
1911 TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
1912 // If the declarator-id is not a template-id, issue a diagnostic and
1913 // recover by ignoring the 'template' keyword.
1914 Diag(Tok, diag::err_template_defn_explicit_instantiation)
1915 << 1 << FixItHint::CreateRemoval(TemplateInfo.TemplateLoc);
1916 TemplateParams = nullptr;
1917 }
1918
1919 bool IsDependent = false;
1920
1921 // Don't pass down template parameter lists if this is just a tag
1922 // reference. For example, we don't need the template parameters here:
1923 // template <class T> class A *makeA(T t);
1924 MultiTemplateParamsArg TParams;
1925 if (TUK != Sema::TUK_Reference && TemplateParams)
1926 TParams =
1927 MultiTemplateParamsArg(&(*TemplateParams)[0], TemplateParams->size());
1928
1929 stripTypeAttributesOffDeclSpec(attrs, DS, TUK);
1930
1931 // Declaration or definition of a class type
1932 TagOrTempResult = Actions.ActOnTag(
1933 getCurScope(), TagType, TUK, StartLoc, SS, Name, NameLoc, attrs, AS,
1934 DS.getModulePrivateSpecLoc(), TParams, Owned, IsDependent,
1935 SourceLocation(), false, clang::TypeResult(),
1936 DSC == DeclSpecContext::DSC_type_specifier,
1937 DSC == DeclSpecContext::DSC_template_param ||
1938 DSC == DeclSpecContext::DSC_template_type_arg,
1939 &SkipBody);
1940
1941 // If ActOnTag said the type was dependent, try again with the
1942 // less common call.
1943 if (IsDependent) {
1944 assert(TUK == Sema::TUK_Reference || TUK == Sema::TUK_Friend);
1945 TypeResult = Actions.ActOnDependentTag(getCurScope(), TagType, TUK,
1946 SS, Name, StartLoc, NameLoc);
1947 }
1948 }
1949
1950 // If there is a body, parse it and inform the actions module.
1951 if (TUK == Sema::TUK_Definition) {
1952 assert(Tok.is(tok::l_brace) ||
1953 (getLangOpts().CPlusPlus && Tok.is(tok::colon)) ||
1954 isCXX11FinalKeyword());
1955 if (SkipBody.ShouldSkip)
1956 SkipCXXMemberSpecification(StartLoc, AttrFixitLoc, TagType,
1957 TagOrTempResult.get());
1958 else if (getLangOpts().CPlusPlus)
1959 ParseCXXMemberSpecification(StartLoc, AttrFixitLoc, attrs, TagType,
1960 TagOrTempResult.get());
1961 else {
1962 Decl *D =
1963 SkipBody.CheckSameAsPrevious ? SkipBody.New : TagOrTempResult.get();
1964 // Parse the definition body.
1965 ParseStructUnionBody(StartLoc, TagType, D);
1966 if (SkipBody.CheckSameAsPrevious &&
1967 !Actions.ActOnDuplicateDefinition(DS, TagOrTempResult.get(),
1968 SkipBody)) {
1969 DS.SetTypeSpecError();
1970 return;
1971 }
1972 }
1973 }
1974
1975 if (!TagOrTempResult.isInvalid())
1976 // Delayed processing of attributes.
1977 Actions.ProcessDeclAttributeDelayed(TagOrTempResult.get(), attrs);
1978
1979 const char *PrevSpec = nullptr;
1980 unsigned DiagID;
1981 bool Result;
1982 if (!TypeResult.isInvalid()) {
1983 Result = DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc,
1984 NameLoc.isValid() ? NameLoc : StartLoc,
1985 PrevSpec, DiagID, TypeResult.get(), Policy);
1986 } else if (!TagOrTempResult.isInvalid()) {
1987 Result = DS.SetTypeSpecType(TagType, StartLoc,
1988 NameLoc.isValid() ? NameLoc : StartLoc,
1989 PrevSpec, DiagID, TagOrTempResult.get(), Owned,
1990 Policy);
1991 } else {
1992 DS.SetTypeSpecError();
1993 return;
1994 }
1995
1996 if (Result)
1997 Diag(StartLoc, DiagID) << PrevSpec;
1998
1999 // At this point, we've successfully parsed a class-specifier in 'definition'
2000 // form (e.g. "struct foo { int x; }". While we could just return here, we're
2001 // going to look at what comes after it to improve error recovery. If an
2002 // impossible token occurs next, we assume that the programmer forgot a ; at
2003 // the end of the declaration and recover that way.
2004 //
2005 // Also enforce C++ [temp]p3:
2006 // In a template-declaration which defines a class, no declarator
2007 // is permitted.
2008 //
2009 // After a type-specifier, we don't expect a semicolon. This only happens in
2010 // C, since definitions are not permitted in this context in C++.
2011 if (TUK == Sema::TUK_Definition &&
2012 (getLangOpts().CPlusPlus || !isTypeSpecifier(DSC)) &&
2013 (TemplateInfo.Kind || !isValidAfterTypeSpecifier(false))) {
2014 if (Tok.isNot(tok::semi)) {
2015 const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy();
2016 ExpectAndConsume(tok::semi, diag::err_expected_after,
2017 DeclSpec::getSpecifierName(TagType, PPol));
2018 // Push this token back into the preprocessor and change our current token
2019 // to ';' so that the rest of the code recovers as though there were an
2020 // ';' after the definition.
2021 PP.EnterToken(Tok, /*IsReinject=*/true);
2022 Tok.setKind(tok::semi);
2023 }
2024 }
2025 }
2026
2027 /// ParseBaseClause - Parse the base-clause of a C++ class [C++ class.derived].
2028 ///
2029 /// base-clause : [C++ class.derived]
2030 /// ':' base-specifier-list
2031 /// base-specifier-list:
2032 /// base-specifier '...'[opt]
2033 /// base-specifier-list ',' base-specifier '...'[opt]
2034 void Parser::ParseBaseClause(Decl *ClassDecl) {
2035 assert(Tok.is(tok::colon) && "Not a base clause");
2036 ConsumeToken();
2037
2038 // Build up an array of parsed base specifiers.
2039 SmallVector<CXXBaseSpecifier *, 8> BaseInfo;
2040
2041 while (true) {
2042 // Parse a base-specifier.
2043 BaseResult Result = ParseBaseSpecifier(ClassDecl);
2044 if (Result.isInvalid()) {
2045 // Skip the rest of this base specifier, up until the comma or
2046 // opening brace.
2047 SkipUntil(tok::comma, tok::l_brace, StopAtSemi | StopBeforeMatch);
2048 } else {
2049 // Add this to our array of base specifiers.
2050 BaseInfo.push_back(Result.get());
2051 }
2052
2053 // If the next token is a comma, consume it and keep reading
2054 // base-specifiers.
2055 if (!TryConsumeToken(tok::comma))
2056 break;
2057 }
2058
2059 // Attach the base specifiers
2060 Actions.ActOnBaseSpecifiers(ClassDecl, BaseInfo);
2061 }
2062
2063 /// ParseBaseSpecifier - Parse a C++ base-specifier. A base-specifier is
2064 /// one entry in the base class list of a class specifier, for example:
2065 /// class foo : public bar, virtual private baz {
2066 /// 'public bar' and 'virtual private baz' are each base-specifiers.
2067 ///
2068 /// base-specifier: [C++ class.derived]
2069 /// attribute-specifier-seq[opt] base-type-specifier
2070 /// attribute-specifier-seq[opt] 'virtual' access-specifier[opt]
2071 /// base-type-specifier
2072 /// attribute-specifier-seq[opt] access-specifier 'virtual'[opt]
2073 /// base-type-specifier
2074 BaseResult Parser::ParseBaseSpecifier(Decl *ClassDecl) {
2075 bool IsVirtual = false;
2076 SourceLocation StartLoc = Tok.getLocation();
2077
2078 ParsedAttributesWithRange Attributes(AttrFactory);
2079 MaybeParseCXX11Attributes(Attributes);
2080
2081 // Parse the 'virtual' keyword.
2082 if (TryConsumeToken(tok::kw_virtual))
2083 IsVirtual = true;
2084
2085 CheckMisplacedCXX11Attribute(Attributes, StartLoc);
2086
2087 // Parse an (optional) access specifier.
2088 AccessSpecifier Access = getAccessSpecifierIfPresent();
2089 if (Access != AS_none)
2090 ConsumeToken();
2091
2092 CheckMisplacedCXX11Attribute(Attributes, StartLoc);
2093
2094 // Parse the 'virtual' keyword (again!), in case it came after the
2095 // access specifier.
2096 if (Tok.is(tok::kw_virtual)) {
2097 SourceLocation VirtualLoc = ConsumeToken();
2098 if (IsVirtual) {
2099 // Complain about duplicate 'virtual'
2100 Diag(VirtualLoc, diag::err_dup_virtual)
2101 << FixItHint::CreateRemoval(VirtualLoc);
2102 }
2103
2104 IsVirtual = true;
2105 }
2106
2107 CheckMisplacedCXX11Attribute(Attributes, StartLoc);
2108
2109 // Parse the class-name.
2110
2111 // HACK: MSVC doesn't consider _Atomic to be a keyword and its STL
2112 // implementation for VS2013 uses _Atomic as an identifier for one of the
2113 // classes in <atomic>. Treat '_Atomic' to be an identifier when we are
2114 // parsing the class-name for a base specifier.
2115 if (getLangOpts().MSVCCompat && Tok.is(tok::kw__Atomic) &&
2116 NextToken().is(tok::less))
2117 Tok.setKind(tok::identifier);
2118
2119 SourceLocation EndLocation;
2120 SourceLocation BaseLoc;
2121 TypeResult BaseType = ParseBaseTypeSpecifier(BaseLoc, EndLocation);
2122 if (BaseType.isInvalid())
2123 return true;
2124
2125 // Parse the optional ellipsis (for a pack expansion). The ellipsis is
2126 // actually part of the base-specifier-list grammar productions, but we
2127 // parse it here for convenience.
2128 SourceLocation EllipsisLoc;
2129 TryConsumeToken(tok::ellipsis, EllipsisLoc);
2130
2131 // Find the complete source range for the base-specifier.
2132 SourceRange Range(StartLoc, EndLocation);
2133
2134 // Notify semantic analysis that we have parsed a complete
2135 // base-specifier.
2136 return Actions.ActOnBaseSpecifier(ClassDecl, Range, Attributes, IsVirtual,
2137 Access, BaseType.get(), BaseLoc,
2138 EllipsisLoc);
2139 }
2140
2141 /// getAccessSpecifierIfPresent - Determine whether the next token is
2142 /// a C++ access-specifier.
2143 ///
2144 /// access-specifier: [C++ class.derived]
2145 /// 'private'
2146 /// 'protected'
2147 /// 'public'
2148 AccessSpecifier Parser::getAccessSpecifierIfPresent() const {
2149 switch (Tok.getKind()) {
2150 default: return AS_none;
2151 case tok::kw_private: return AS_private;
2152 case tok::kw_protected: return AS_protected;
2153 case tok::kw_public: return AS_public;
2154 }
2155 }
2156
2157 /// If the given declarator has any parts for which parsing has to be
2158 /// delayed, e.g., default arguments or an exception-specification, create a
2159 /// late-parsed method declaration record to handle the parsing at the end of
2160 /// the class definition.
2161 void Parser::HandleMemberFunctionDeclDelays(Declarator& DeclaratorInfo,
2162 Decl *ThisDecl) {
2163 DeclaratorChunk::FunctionTypeInfo &FTI
2164 = DeclaratorInfo.getFunctionTypeInfo();
2165 // If there was a late-parsed exception-specification, we'll need a
2166 // late parse
2167 bool NeedLateParse = FTI.getExceptionSpecType() == EST_Unparsed;
2168
2169 if (!NeedLateParse) {
2170 // Look ahead to see if there are any default args
2171 for (unsigned ParamIdx = 0; ParamIdx < FTI.NumParams; ++ParamIdx) {
2172 auto Param = cast<ParmVarDecl>(FTI.Params[ParamIdx].Param);
2173 if (Param->hasUnparsedDefaultArg()) {
2174 NeedLateParse = true;
2175 break;
2176 }
2177 }
2178 }
2179
2180 if (NeedLateParse) {
2181 // Push this method onto the stack of late-parsed method
2182 // declarations.
2183 auto LateMethod = new LateParsedMethodDeclaration(this, ThisDecl);
2184 getCurrentClass().LateParsedDeclarations.push_back(LateMethod);
2185 LateMethod->TemplateScope = getCurScope()->isTemplateParamScope();
2186
2187 // Stash the exception-specification tokens in the late-pased method.
2188 LateMethod->ExceptionSpecTokens = FTI.ExceptionSpecTokens;
2189 FTI.ExceptionSpecTokens = nullptr;
2190
2191 // Push tokens for each parameter. Those that do not have
2192 // defaults will be NULL.
2193 LateMethod->DefaultArgs.reserve(FTI.NumParams);
2194 for (unsigned ParamIdx = 0; ParamIdx < FTI.NumParams; ++ParamIdx)
2195 LateMethod->DefaultArgs.push_back(LateParsedDefaultArgument(
2196 FTI.Params[ParamIdx].Param,
2197 std::move(FTI.Params[ParamIdx].DefaultArgTokens)));
2198 }
2199 }
2200
2201 /// isCXX11VirtSpecifier - Determine whether the given token is a C++11
2202 /// virt-specifier.
2203 ///
2204 /// virt-specifier:
2205 /// override
2206 /// final
2207 /// __final
2208 VirtSpecifiers::Specifier Parser::isCXX11VirtSpecifier(const Token &Tok) const {
2209 if (!getLangOpts().CPlusPlus || Tok.isNot(tok::identifier))
2210 return VirtSpecifiers::VS_None;
2211
2212 IdentifierInfo *II = Tok.getIdentifierInfo();
2213
2214 // Initialize the contextual keywords.
2215 if (!Ident_final) {
2216 Ident_final = &PP.getIdentifierTable().get("final");
2217 if (getLangOpts().GNUKeywords)
2218 Ident_GNU_final = &PP.getIdentifierTable().get("__final");
2219 if (getLangOpts().MicrosoftExt)
2220 Ident_sealed = &PP.getIdentifierTable().get("sealed");
2221 Ident_override = &PP.getIdentifierTable().get("override");
2222 }
2223
2224 if (II == Ident_override)
2225 return VirtSpecifiers::VS_Override;
2226
2227 if (II == Ident_sealed)
2228 return VirtSpecifiers::VS_Sealed;
2229
2230 if (II == Ident_final)
2231 return VirtSpecifiers::VS_Final;
2232
2233 if (II == Ident_GNU_final)
2234 return VirtSpecifiers::VS_GNU_Final;
2235
2236 return VirtSpecifiers::VS_None;
2237 }
2238
2239 /// ParseOptionalCXX11VirtSpecifierSeq - Parse a virt-specifier-seq.
2240 ///
2241 /// virt-specifier-seq:
2242 /// virt-specifier
2243 /// virt-specifier-seq virt-specifier
2244 void Parser::ParseOptionalCXX11VirtSpecifierSeq(VirtSpecifiers &VS,
2245 bool IsInterface,
2246 SourceLocation FriendLoc) {
2247 while (true) {
2248 VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier();
2249 if (Specifier == VirtSpecifiers::VS_None)
2250 return;
2251
2252 if (FriendLoc.isValid()) {
2253 Diag(Tok.getLocation(), diag::err_friend_decl_spec)
2254 << VirtSpecifiers::getSpecifierName(Specifier)
2255 << FixItHint::CreateRemoval(Tok.getLocation())
2256 << SourceRange(FriendLoc, FriendLoc);
2257 ConsumeToken();
2258 continue;
2259 }
2260
2261 // C++ [class.mem]p8:
2262 // A virt-specifier-seq shall contain at most one of each virt-specifier.
2263 const char *PrevSpec = nullptr;
2264 if (VS.SetSpecifier(Specifier, Tok.getLocation(), PrevSpec))
2265 Diag(Tok.getLocation(), diag::err_duplicate_virt_specifier)
2266 << PrevSpec
2267 << FixItHint::CreateRemoval(Tok.getLocation());
2268
2269 if (IsInterface && (Specifier == VirtSpecifiers::VS_Final ||
2270 Specifier == VirtSpecifiers::VS_Sealed)) {
2271 Diag(Tok.getLocation(), diag::err_override_control_interface)
2272 << VirtSpecifiers::getSpecifierName(Specifier);
2273 } else if (Specifier == VirtSpecifiers::VS_Sealed) {
2274 Diag(Tok.getLocation(), diag::ext_ms_sealed_keyword);
2275 } else if (Specifier == VirtSpecifiers::VS_GNU_Final) {
2276 Diag(Tok.getLocation(), diag::ext_warn_gnu_final);
2277 } else {
2278 Diag(Tok.getLocation(),
2279 getLangOpts().CPlusPlus11
2280 ? diag::warn_cxx98_compat_override_control_keyword
2281 : diag::ext_override_control_keyword)
2282 << VirtSpecifiers::getSpecifierName(Specifier);
2283 }
2284 ConsumeToken();
2285 }
2286 }
2287
2288 /// isCXX11FinalKeyword - Determine whether the next token is a C++11
2289 /// 'final' or Microsoft 'sealed' contextual keyword.
2290 bool Parser::isCXX11FinalKeyword() const {
2291 VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier();
2292 return Specifier == VirtSpecifiers::VS_Final ||
2293 Specifier == VirtSpecifiers::VS_GNU_Final ||
2294 Specifier == VirtSpecifiers::VS_Sealed;
2295 }
2296
2297 /// Parse a C++ member-declarator up to, but not including, the optional
2298 /// brace-or-equal-initializer or pure-specifier.
2299 bool Parser::ParseCXXMemberDeclaratorBeforeInitializer(
2300 Declarator &DeclaratorInfo, VirtSpecifiers &VS, ExprResult &BitfieldSize,
2301 LateParsedAttrList &LateParsedAttrs) {
2302 // member-declarator:
2303 // declarator pure-specifier[opt]
2304 // declarator requires-clause
2305 // declarator brace-or-equal-initializer[opt]
2306 // identifier[opt] ':' constant-expression
2307 if (Tok.isNot(tok::colon))
2308 ParseDeclarator(DeclaratorInfo);
2309 else
2310 DeclaratorInfo.SetIdentifier(nullptr, Tok.getLocation());
2311
2312 if (!DeclaratorInfo.isFunctionDeclarator() && TryConsumeToken(tok::colon)) {
2313 assert(DeclaratorInfo.isPastIdentifier() &&
2314 "don't know where identifier would go yet?");
2315 BitfieldSize = ParseConstantExpression();
2316 if (BitfieldSize.isInvalid())
2317 SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2318 } else if (Tok.is(tok::kw_requires)) {
2319 ParseTrailingRequiresClause(DeclaratorInfo);
2320 } else {
2321 ParseOptionalCXX11VirtSpecifierSeq(
2322 VS, getCurrentClass().IsInterface,
2323 DeclaratorInfo.getDeclSpec().getFriendSpecLoc());
2324 if (!VS.isUnset())
2325 MaybeParseAndDiagnoseDeclSpecAfterCXX11VirtSpecifierSeq(DeclaratorInfo, VS);
2326 }
2327
2328 // If a simple-asm-expr is present, parse it.
2329 if (Tok.is(tok::kw_asm)) {
2330 SourceLocation Loc;
2331 ExprResult AsmLabel(ParseSimpleAsm(/*ForAsmLabel*/ true, &Loc));
2332 if (AsmLabel.isInvalid())
2333 SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2334
2335 DeclaratorInfo.setAsmLabel(AsmLabel.get());
2336 DeclaratorInfo.SetRangeEnd(Loc);
2337 }
2338
2339 // If attributes exist after the declarator, but before an '{', parse them.
2340 MaybeParseGNUAttributes(DeclaratorInfo, &LateParsedAttrs);
2341
2342 // For compatibility with code written to older Clang, also accept a
2343 // virt-specifier *after* the GNU attributes.
2344 if (BitfieldSize.isUnset() && VS.isUnset()) {
2345 ParseOptionalCXX11VirtSpecifierSeq(
2346 VS, getCurrentClass().IsInterface,
2347 DeclaratorInfo.getDeclSpec().getFriendSpecLoc());
2348 if (!VS.isUnset()) {
2349 // If we saw any GNU-style attributes that are known to GCC followed by a
2350 // virt-specifier, issue a GCC-compat warning.
2351 for (const ParsedAttr &AL : DeclaratorInfo.getAttributes())
2352 if (AL.isKnownToGCC() && !AL.isCXX11Attribute())
2353 Diag(AL.getLoc(), diag::warn_gcc_attribute_location);
2354
2355 MaybeParseAndDiagnoseDeclSpecAfterCXX11VirtSpecifierSeq(DeclaratorInfo, VS);
2356 }
2357 }
2358
2359 // If this has neither a name nor a bit width, something has gone seriously
2360 // wrong. Skip until the semi-colon or }.
2361 if (!DeclaratorInfo.hasName() && BitfieldSize.isUnset()) {
2362 // If so, skip until the semi-colon or a }.
2363 SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
2364 return true;
2365 }
2366 return false;
2367 }
2368
2369 /// Look for declaration specifiers possibly occurring after C++11
2370 /// virt-specifier-seq and diagnose them.
2371 void Parser::MaybeParseAndDiagnoseDeclSpecAfterCXX11VirtSpecifierSeq(
2372 Declarator &D,
2373 VirtSpecifiers &VS) {
2374 DeclSpec DS(AttrFactory);
2375
2376 // GNU-style and C++11 attributes are not allowed here, but they will be
2377 // handled by the caller. Diagnose everything else.
2378 ParseTypeQualifierListOpt(
2379 DS, AR_NoAttributesParsed, false,
2380 /*IdentifierRequired=*/false, llvm::function_ref<void()>([&]() {
2381 Actions.CodeCompleteFunctionQualifiers(DS, D, &VS);
2382 }));
2383 D.ExtendWithDeclSpec(DS);
2384
2385 if (D.isFunctionDeclarator()) {
2386 auto &Function = D.getFunctionTypeInfo();
2387 if (DS.getTypeQualifiers() != DeclSpec::TQ_unspecified) {
2388 auto DeclSpecCheck = [&](DeclSpec::TQ TypeQual, StringRef FixItName,
2389 SourceLocation SpecLoc) {
2390 FixItHint Insertion;
2391 auto &MQ = Function.getOrCreateMethodQualifiers();
2392 if (!(MQ.getTypeQualifiers() & TypeQual)) {
2393 std::string Name(FixItName.data());
2394 Name += " ";
2395 Insertion = FixItHint::CreateInsertion(VS.getFirstLocation(), Name);
2396 MQ.SetTypeQual(TypeQual, SpecLoc);
2397 }
2398 Diag(SpecLoc, diag::err_declspec_after_virtspec)
2399 << FixItName
2400 << VirtSpecifiers::getSpecifierName(VS.getLastSpecifier())
2401 << FixItHint::CreateRemoval(SpecLoc) << Insertion;
2402 };
2403 DS.forEachQualifier(DeclSpecCheck);
2404 }
2405
2406 // Parse ref-qualifiers.
2407 bool RefQualifierIsLValueRef = true;
2408 SourceLocation RefQualifierLoc;
2409 if (ParseRefQualifier(RefQualifierIsLValueRef, RefQualifierLoc)) {
2410 const char *Name = (RefQualifierIsLValueRef ? "& " : "&& ");
2411 FixItHint Insertion = FixItHint::CreateInsertion(VS.getFirstLocation(), Name);
2412 Function.RefQualifierIsLValueRef = RefQualifierIsLValueRef;
2413 Function.RefQualifierLoc = RefQualifierLoc.getRawEncoding();
2414
2415 Diag(RefQualifierLoc, diag::err_declspec_after_virtspec)
2416 << (RefQualifierIsLValueRef ? "&" : "&&")
2417 << VirtSpecifiers::getSpecifierName(VS.getLastSpecifier())
2418 << FixItHint::CreateRemoval(RefQualifierLoc)
2419 << Insertion;
2420 D.SetRangeEnd(RefQualifierLoc);
2421 }
2422 }
2423 }
2424
2425 /// ParseCXXClassMemberDeclaration - Parse a C++ class member declaration.
2426 ///
2427 /// member-declaration:
2428 /// decl-specifier-seq[opt] member-declarator-list[opt] ';'
2429 /// function-definition ';'[opt]
2430 /// ::[opt] nested-name-specifier template[opt] unqualified-id ';'[TODO]
2431 /// using-declaration [TODO]
2432 /// [C++0x] static_assert-declaration
2433 /// template-declaration
2434 /// [GNU] '__extension__' member-declaration
2435 ///
2436 /// member-declarator-list:
2437 /// member-declarator
2438 /// member-declarator-list ',' member-declarator
2439 ///
2440 /// member-declarator:
2441 /// declarator virt-specifier-seq[opt] pure-specifier[opt]
2442 /// [C++2a] declarator requires-clause
2443 /// declarator constant-initializer[opt]
2444 /// [C++11] declarator brace-or-equal-initializer[opt]
2445 /// identifier[opt] ':' constant-expression
2446 ///
2447 /// virt-specifier-seq:
2448 /// virt-specifier
2449 /// virt-specifier-seq virt-specifier
2450 ///
2451 /// virt-specifier:
2452 /// override
2453 /// final
2454 /// [MS] sealed
2455 ///
2456 /// pure-specifier:
2457 /// '= 0'
2458 ///
2459 /// constant-initializer:
2460 /// '=' constant-expression
2461 ///
2462 Parser::DeclGroupPtrTy
2463 Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
2464 ParsedAttributes &AccessAttrs,
2465 const ParsedTemplateInfo &TemplateInfo,
2466 ParsingDeclRAIIObject *TemplateDiags) {
2467 if (Tok.is(tok::at)) {
2468 if (getLangOpts().ObjC && NextToken().isObjCAtKeyword(tok::objc_defs))
2469 Diag(Tok, diag::err_at_defs_cxx);
2470 else
2471 Diag(Tok, diag::err_at_in_class);
2472
2473 ConsumeToken();
2474 SkipUntil(tok::r_brace, StopAtSemi);
2475 return nullptr;
2476 }
2477
2478 // Turn on colon protection early, while parsing declspec, although there is
2479 // nothing to protect there. It prevents from false errors if error recovery
2480 // incorrectly determines where the declspec ends, as in the example:
2481 // struct A { enum class B { C }; };
2482 // const int C = 4;
2483 // struct D { A::B : C; };
2484 ColonProtectionRAIIObject X(*this);
2485
2486 // Access declarations.
2487 bool MalformedTypeSpec = false;
2488 if (!TemplateInfo.Kind &&
2489 Tok.isOneOf(tok::identifier, tok::coloncolon, tok::kw___super)) {
2490 if (TryAnnotateCXXScopeToken())
2491 MalformedTypeSpec = true;
2492
2493 bool isAccessDecl;
2494 if (Tok.isNot(tok::annot_cxxscope))
2495 isAccessDecl = false;
2496 else if (NextToken().is(tok::identifier))
2497 isAccessDecl = GetLookAheadToken(2).is(tok::semi);
2498 else
2499 isAccessDecl = NextToken().is(tok::kw_operator);
2500
2501 if (isAccessDecl) {
2502 // Collect the scope specifier token we annotated earlier.
2503 CXXScopeSpec SS;
2504 ParseOptionalCXXScopeSpecifier(SS, nullptr,
2505 /*EnteringContext=*/false);
2506
2507 if (SS.isInvalid()) {
2508 SkipUntil(tok::semi);
2509 return nullptr;
2510 }
2511
2512 // Try to parse an unqualified-id.
2513 SourceLocation TemplateKWLoc;
2514 UnqualifiedId Name;
2515 if (ParseUnqualifiedId(SS, false, true, true, false, nullptr,
2516 &TemplateKWLoc, Name)) {
2517 SkipUntil(tok::semi);
2518 return nullptr;
2519 }
2520
2521 // TODO: recover from mistakenly-qualified operator declarations.
2522 if (ExpectAndConsume(tok::semi, diag::err_expected_after,
2523 "access declaration")) {
2524 SkipUntil(tok::semi);
2525 return nullptr;
2526 }
2527
2528 // FIXME: We should do something with the 'template' keyword here.
2529 return DeclGroupPtrTy::make(DeclGroupRef(Actions.ActOnUsingDeclaration(
2530 getCurScope(), AS, /*UsingLoc*/ SourceLocation(),
2531 /*TypenameLoc*/ SourceLocation(), SS, Name,
2532 /*EllipsisLoc*/ SourceLocation(),
2533 /*AttrList*/ ParsedAttributesView())));
2534 }
2535 }
2536
2537 // static_assert-declaration. A templated static_assert declaration is
2538 // diagnosed in Parser::ParseSingleDeclarationAfterTemplate.
2539 if (!TemplateInfo.Kind &&
2540 Tok.isOneOf(tok::kw_static_assert, tok::kw__Static_assert)) {
2541 SourceLocation DeclEnd;
2542 return DeclGroupPtrTy::make(
2543 DeclGroupRef(ParseStaticAssertDeclaration(DeclEnd)));
2544 }
2545
2546 if (Tok.is(tok::kw_template)) {
2547 assert(!TemplateInfo.TemplateParams &&
2548 "Nested template improperly parsed?");
2549 ObjCDeclContextSwitch ObjCDC(*this);
2550 SourceLocation DeclEnd;
2551 return DeclGroupPtrTy::make(
2552 DeclGroupRef(ParseTemplateDeclarationOrSpecialization(
2553 DeclaratorContext::MemberContext, DeclEnd, AccessAttrs, AS)));
2554 }
2555
2556 // Handle: member-declaration ::= '__extension__' member-declaration
2557 if (Tok.is(tok::kw___extension__)) {
2558 // __extension__ silences extension warnings in the subexpression.
2559 ExtensionRAIIObject O(Diags); // Use RAII to do this.
2560 ConsumeToken();
2561 return ParseCXXClassMemberDeclaration(AS, AccessAttrs,
2562 TemplateInfo, TemplateDiags);
2563 }
2564
2565 ParsedAttributesWithRange attrs(AttrFactory);
2566 ParsedAttributesViewWithRange FnAttrs;
2567 // Optional C++11 attribute-specifier
2568 MaybeParseCXX11Attributes(attrs);
2569 // We need to keep these attributes for future diagnostic
2570 // before they are taken over by declaration specifier.
2571 FnAttrs.addAll(attrs.begin(), attrs.end());
2572 FnAttrs.Range = attrs.Range;
2573
2574 MaybeParseMicrosoftAttributes(attrs);
2575
2576 if (Tok.is(tok::kw_using)) {
2577 ProhibitAttributes(attrs);
2578
2579 // Eat 'using'.
2580 SourceLocation UsingLoc = ConsumeToken();
2581
2582 // Consume unexpected 'template' keywords.
2583 while (Tok.is(tok::kw_template)) {
2584 SourceLocation TemplateLoc = ConsumeToken();
2585 Diag(TemplateLoc, diag::err_unexpected_template_after_using)
2586 << FixItHint::CreateRemoval(TemplateLoc);
2587 }
2588
2589 if (Tok.is(tok::kw_namespace)) {
2590 Diag(UsingLoc, diag::err_using_namespace_in_class);
2591 SkipUntil(tok::semi, StopBeforeMatch);
2592 return nullptr;
2593 }
2594 SourceLocation DeclEnd;
2595 // Otherwise, it must be a using-declaration or an alias-declaration.
2596 return ParseUsingDeclaration(DeclaratorContext::MemberContext, TemplateInfo,
2597 UsingLoc, DeclEnd, AS);
2598 }
2599
2600 // Hold late-parsed attributes so we can attach a Decl to them later.
2601 LateParsedAttrList CommonLateParsedAttrs;
2602
2603 // decl-specifier-seq:
2604 // Parse the common declaration-specifiers piece.
2605 ParsingDeclSpec DS(*this, TemplateDiags);
2606 DS.takeAttributesFrom(attrs);
2607 if (MalformedTypeSpec)
2608 DS.SetTypeSpecError();
2609
2610 ParseDeclarationSpecifiers(DS, TemplateInfo, AS, DeclSpecContext::DSC_class,
2611 &CommonLateParsedAttrs);
2612
2613 // Turn off colon protection that was set for declspec.
2614 X.restore();
2615
2616 // If we had a free-standing type definition with a missing semicolon, we
2617 // may get this far before the problem becomes obvious.
2618 if (DS.hasTagDefinition() &&
2619 TemplateInfo.Kind == ParsedTemplateInfo::NonTemplate &&
2620 DiagnoseMissingSemiAfterTagDefinition(DS, AS, DeclSpecContext::DSC_class,
2621 &CommonLateParsedAttrs))
2622 return nullptr;
2623
2624 MultiTemplateParamsArg TemplateParams(
2625 TemplateInfo.TemplateParams? TemplateInfo.TemplateParams->data()
2626 : nullptr,
2627 TemplateInfo.TemplateParams? TemplateInfo.TemplateParams->size() : 0);
2628
2629 if (TryConsumeToken(tok::semi)) {
2630 if (DS.isFriendSpecified())
2631 ProhibitAttributes(FnAttrs);
2632
2633 RecordDecl *AnonRecord = nullptr;
2634 Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(
2635 getCurScope(), AS, DS, TemplateParams, false, AnonRecord);
2636 DS.complete(TheDecl);
2637 if (AnonRecord) {
2638 Decl* decls[] = {AnonRecord, TheDecl};
2639 return Actions.BuildDeclaratorGroup(decls);
2640 }
2641 return Actions.ConvertDeclToDeclGroup(TheDecl);
2642 }
2643
2644 ParsingDeclarator DeclaratorInfo(*this, DS, DeclaratorContext::MemberContext);
2645 if (TemplateInfo.TemplateParams)
2646 DeclaratorInfo.setTemplateParameterLists(TemplateParams);
2647 VirtSpecifiers VS;
2648
2649 // Hold late-parsed attributes so we can attach a Decl to them later.
2650 LateParsedAttrList LateParsedAttrs;
2651
2652 SourceLocation EqualLoc;
2653 SourceLocation PureSpecLoc;
2654
2655 auto TryConsumePureSpecifier = [&] (bool AllowDefinition) {
2656 if (Tok.isNot(tok::equal))
2657 return false;
2658
2659 auto &Zero = NextToken();
2660 SmallString<8> Buffer;
2661 if (Zero.isNot(tok::numeric_constant) || Zero.getLength() != 1 ||
2662 PP.getSpelling(Zero, Buffer) != "0")
2663 return false;
2664
2665 auto &After = GetLookAheadToken(2);
2666 if (!After.isOneOf(tok::semi, tok::comma) &&
2667 !(AllowDefinition &&
2668 After.isOneOf(tok::l_brace, tok::colon, tok::kw_try)))
2669 return false;
2670
2671 EqualLoc = ConsumeToken();
2672 PureSpecLoc = ConsumeToken();
2673 return true;
2674 };
2675
2676 SmallVector<Decl *, 8> DeclsInGroup;
2677 ExprResult BitfieldSize;
2678 ExprResult TrailingRequiresClause;
2679 bool ExpectSemi = true;
2680
2681 // Parse the first declarator.
2682 if (ParseCXXMemberDeclaratorBeforeInitializer(
2683 DeclaratorInfo, VS, BitfieldSize, LateParsedAttrs)) {
2684 TryConsumeToken(tok::semi);
2685 return nullptr;
2686 }
2687
2688 // Check for a member function definition.
2689 if (BitfieldSize.isUnset()) {
2690 // MSVC permits pure specifier on inline functions defined at class scope.
2691 // Hence check for =0 before checking for function definition.
2692 if (getLangOpts().MicrosoftExt && DeclaratorInfo.isDeclarationOfFunction())
2693 TryConsumePureSpecifier(/*AllowDefinition*/ true);
2694
2695 FunctionDefinitionKind DefinitionKind = FDK_Declaration;
2696 // function-definition:
2697 //
2698 // In C++11, a non-function declarator followed by an open brace is a
2699 // braced-init-list for an in-class member initialization, not an
2700 // erroneous function definition.
2701 if (Tok.is(tok::l_brace) && !getLangOpts().CPlusPlus11) {
2702 DefinitionKind = FDK_Definition;
2703 } else if (DeclaratorInfo.isFunctionDeclarator()) {
2704 if (Tok.isOneOf(tok::l_brace, tok::colon, tok::kw_try)) {
2705 DefinitionKind = FDK_Definition;
2706 } else if (Tok.is(tok::equal)) {
2707 const Token &KW = NextToken();
2708 if (KW.is(tok::kw_default))
2709 DefinitionKind = FDK_Defaulted;
2710 else if (KW.is(tok::kw_delete))
2711 DefinitionKind = FDK_Deleted;
2712 }
2713 }
2714 DeclaratorInfo.setFunctionDefinitionKind(DefinitionKind);
2715
2716 // C++11 [dcl.attr.grammar] p4: If an attribute-specifier-seq appertains
2717 // to a friend declaration, that declaration shall be a definition.
2718 if (DeclaratorInfo.isFunctionDeclarator() &&
2719 DefinitionKind != FDK_Definition && DS.isFriendSpecified()) {
2720 // Diagnose attributes that appear before decl specifier:
2721 // [[]] friend int foo();
2722 ProhibitAttributes(FnAttrs);
2723 }
2724
2725 if (DefinitionKind != FDK_Declaration) {
2726 if (!DeclaratorInfo.isFunctionDeclarator()) {
2727 Diag(DeclaratorInfo.getIdentifierLoc(), diag::err_func_def_no_params);
2728 ConsumeBrace();
2729 SkipUntil(tok::r_brace);
2730
2731 // Consume the optional ';'
2732 TryConsumeToken(tok::semi);
2733
2734 return nullptr;
2735 }
2736
2737 if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
2738 Diag(DeclaratorInfo.getIdentifierLoc(),
2739 diag::err_function_declared_typedef);
2740
2741 // Recover by treating the 'typedef' as spurious.
2742 DS.ClearStorageClassSpecs();
2743 }
2744
2745 Decl *FunDecl =
2746 ParseCXXInlineMethodDef(AS, AccessAttrs, DeclaratorInfo, TemplateInfo,
2747 VS, PureSpecLoc);
2748
2749 if (FunDecl) {
2750 for (unsigned i = 0, ni = CommonLateParsedAttrs.size(); i < ni; ++i) {
2751 CommonLateParsedAttrs[i]->addDecl(FunDecl);
2752 }
2753 for (unsigned i = 0, ni = LateParsedAttrs.size(); i < ni; ++i) {
2754 LateParsedAttrs[i]->addDecl(FunDecl);
2755 }
2756 }
2757 LateParsedAttrs.clear();
2758
2759 // Consume the ';' - it's optional unless we have a delete or default
2760 if (Tok.is(tok::semi))
2761 ConsumeExtraSemi(AfterMemberFunctionDefinition);
2762
2763 return DeclGroupPtrTy::make(DeclGroupRef(FunDecl));
2764 }
2765 }
2766
2767 // member-declarator-list:
2768 // member-declarator
2769 // member-declarator-list ',' member-declarator
2770
2771 while (1) {
2772 InClassInitStyle HasInClassInit = ICIS_NoInit;
2773 bool HasStaticInitializer = false;
2774 if (Tok.isOneOf(tok::equal, tok::l_brace) && PureSpecLoc.isInvalid()) {
2775 if (DeclaratorInfo.isDeclarationOfFunction()) {
2776 // It's a pure-specifier.
2777 if (!TryConsumePureSpecifier(/*AllowFunctionDefinition*/ false))
2778 // Parse it as an expression so that Sema can diagnose it.
2779 HasStaticInitializer = true;
2780 } else if (DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
2781 DeclSpec::SCS_static &&
2782 DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
2783 DeclSpec::SCS_typedef &&
2784 !DS.isFriendSpecified()) {
2785 // It's a default member initializer.
2786 if (BitfieldSize.get())
2787 Diag(Tok, getLangOpts().CPlusPlus2a
2788 ? diag::warn_cxx17_compat_bitfield_member_init
2789 : diag::ext_bitfield_member_init);
2790 HasInClassInit = Tok.is(tok::equal) ? ICIS_CopyInit : ICIS_ListInit;
2791 } else {
2792 HasStaticInitializer = true;
2793 }
2794 }
2795
2796 // NOTE: If Sema is the Action module and declarator is an instance field,
2797 // this call will *not* return the created decl; It will return null.
2798 // See Sema::ActOnCXXMemberDeclarator for details.
2799
2800 NamedDecl *ThisDecl = nullptr;
2801 if (DS.isFriendSpecified()) {
2802 // C++11 [dcl.attr.grammar] p4: If an attribute-specifier-seq appertains
2803 // to a friend declaration, that declaration shall be a definition.
2804 //
2805 // Diagnose attributes that appear in a friend member function declarator:
2806 // friend int foo [[]] ();
2807 SmallVector<SourceRange, 4> Ranges;
2808 DeclaratorInfo.getCXX11AttributeRanges(Ranges);
2809 for (SmallVectorImpl<SourceRange>::iterator I = Ranges.begin(),
2810 E = Ranges.end(); I != E; ++I)
2811 Diag((*I).getBegin(), diag::err_attributes_not_allowed) << *I;
2812
2813 ThisDecl = Actions.ActOnFriendFunctionDecl(getCurScope(), DeclaratorInfo,
2814 TemplateParams);
2815 } else {
2816 ThisDecl = Actions.ActOnCXXMemberDeclarator(getCurScope(), AS,
2817 DeclaratorInfo,
2818 TemplateParams,
2819 BitfieldSize.get(),
2820 VS, HasInClassInit);
2821
2822 if (VarTemplateDecl *VT =
2823 ThisDecl ? dyn_cast<VarTemplateDecl>(ThisDecl) : nullptr)
2824 // Re-direct this decl to refer to the templated decl so that we can
2825 // initialize it.
2826 ThisDecl = VT->getTemplatedDecl();
2827
2828 if (ThisDecl)
2829 Actions.ProcessDeclAttributeList(getCurScope(), ThisDecl, AccessAttrs);
2830 }
2831
2832 // Error recovery might have converted a non-static member into a static
2833 // member.
2834 if (HasInClassInit != ICIS_NoInit &&
2835 DeclaratorInfo.getDeclSpec().getStorageClassSpec() ==
2836 DeclSpec::SCS_static) {
2837 HasInClassInit = ICIS_NoInit;
2838 HasStaticInitializer = true;
2839 }
2840
2841 if (ThisDecl && PureSpecLoc.isValid())
2842 Actions.ActOnPureSpecifier(ThisDecl, PureSpecLoc);
2843
2844 // Handle the initializer.
2845 if (HasInClassInit != ICIS_NoInit) {
2846 // The initializer was deferred; parse it and cache the tokens.
2847 Diag(Tok, getLangOpts().CPlusPlus11
2848 ? diag::warn_cxx98_compat_nonstatic_member_init
2849 : diag::ext_nonstatic_member_init);
2850
2851 if (DeclaratorInfo.isArrayOfUnknownBound()) {
2852 // C++11 [dcl.array]p3: An array bound may also be omitted when the
2853 // declarator is followed by an initializer.
2854 //
2855 // A brace-or-equal-initializer for a member-declarator is not an
2856 // initializer in the grammar, so this is ill-formed.
2857 Diag(Tok, diag::err_incomplete_array_member_init);
2858 SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2859
2860 // Avoid later warnings about a class member of incomplete type.
2861 if (ThisDecl)
2862 ThisDecl->setInvalidDecl();
2863 } else
2864 ParseCXXNonStaticMemberInitializer(ThisDecl);
2865 } else if (HasStaticInitializer) {
2866 // Normal initializer.
2867 ExprResult Init = ParseCXXMemberInitializer(
2868 ThisDecl, DeclaratorInfo.isDeclarationOfFunction(), EqualLoc);
2869
2870 if (Init.isInvalid())
2871 SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2872 else if (ThisDecl)
2873 Actions.AddInitializerToDecl(ThisDecl, Init.get(), EqualLoc.isInvalid());
2874 } else if (ThisDecl && DS.getStorageClassSpec() == DeclSpec::SCS_static)
2875 // No initializer.
2876 Actions.ActOnUninitializedDecl(ThisDecl);
2877
2878 if (ThisDecl) {
2879 if (!ThisDecl->isInvalidDecl()) {
2880 // Set the Decl for any late parsed attributes
2881 for (unsigned i = 0, ni = CommonLateParsedAttrs.size(); i < ni; ++i)
2882 CommonLateParsedAttrs[i]->addDecl(ThisDecl);
2883
2884 for (unsigned i = 0, ni = LateParsedAttrs.size(); i < ni; ++i)
2885 LateParsedAttrs[i]->addDecl(ThisDecl);
2886 }
2887 Actions.FinalizeDeclaration(ThisDecl);
2888 DeclsInGroup.push_back(ThisDecl);
2889
2890 if (DeclaratorInfo.isFunctionDeclarator() &&
2891 DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
2892 DeclSpec::SCS_typedef)
2893 HandleMemberFunctionDeclDelays(DeclaratorInfo, ThisDecl);
2894 }
2895 LateParsedAttrs.clear();
2896
2897 DeclaratorInfo.complete(ThisDecl);
2898
2899 // If we don't have a comma, it is either the end of the list (a ';')
2900 // or an error, bail out.
2901 SourceLocation CommaLoc;
2902 if (!TryConsumeToken(tok::comma, CommaLoc))
2903 break;
2904
2905 if (Tok.isAtStartOfLine() &&
2906 !MightBeDeclarator(DeclaratorContext::MemberContext)) {
2907 // This comma was followed by a line-break and something which can't be
2908 // the start of a declarator. The comma was probably a typo for a
2909 // semicolon.
2910 Diag(CommaLoc, diag::err_expected_semi_declaration)
2911 << FixItHint::CreateReplacement(CommaLoc, ";");
2912 ExpectSemi = false;
2913 break;
2914 }
2915
2916 // Parse the next declarator.
2917 DeclaratorInfo.clear();
2918 VS.clear();
2919 BitfieldSize = ExprResult(/*Invalid=*/false);
2920 EqualLoc = PureSpecLoc = SourceLocation();
2921 DeclaratorInfo.setCommaLoc(CommaLoc);
2922
2923 // GNU attributes are allowed before the second and subsequent declarator.
2924 MaybeParseGNUAttributes(DeclaratorInfo);
2925
2926 if (ParseCXXMemberDeclaratorBeforeInitializer(
2927 DeclaratorInfo, VS, BitfieldSize, LateParsedAttrs))
2928 break;
2929 }
2930
2931 if (ExpectSemi &&
2932 ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list)) {
2933 // Skip to end of block or statement.
2934 SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
2935 // If we stopped at a ';', eat it.
2936 TryConsumeToken(tok::semi);
2937 return nullptr;
2938 }
2939
2940 return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, DeclsInGroup);
2941 }
2942
2943 /// ParseCXXMemberInitializer - Parse the brace-or-equal-initializer.
2944 /// Also detect and reject any attempted defaulted/deleted function definition.
2945 /// The location of the '=', if any, will be placed in EqualLoc.
2946 ///
2947 /// This does not check for a pure-specifier; that's handled elsewhere.
2948 ///
2949 /// brace-or-equal-initializer:
2950 /// '=' initializer-expression
2951 /// braced-init-list
2952 ///
2953 /// initializer-clause:
2954 /// assignment-expression
2955 /// braced-init-list
2956 ///
2957 /// defaulted/deleted function-definition:
2958 /// '=' 'default'
2959 /// '=' 'delete'
2960 ///
2961 /// Prior to C++0x, the assignment-expression in an initializer-clause must
2962 /// be a constant-expression.
2963 ExprResult Parser::ParseCXXMemberInitializer(Decl *D, bool IsFunction,
2964 SourceLocation &EqualLoc) {
2965 assert(Tok.isOneOf(tok::equal, tok::l_brace)
2966 && "Data member initializer not starting with '=' or '{'");
2967
2968 EnterExpressionEvaluationContext Context(
2969 Actions, Sema::ExpressionEvaluationContext::PotentiallyEvaluated, D);
2970 if (TryConsumeToken(tok::equal, EqualLoc)) {
2971 if (Tok.is(tok::kw_delete)) {
2972 // In principle, an initializer of '= delete p;' is legal, but it will
2973 // never type-check. It's better to diagnose it as an ill-formed expression
2974 // than as an ill-formed deleted non-function member.
2975 // An initializer of '= delete p, foo' will never be parsed, because
2976 // a top-level comma always ends the initializer expression.
2977 const Token &Next = NextToken();
2978 if (IsFunction || Next.isOneOf(tok::semi, tok::comma, tok::eof)) {
2979 if (IsFunction)
2980 Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
2981 << 1 /* delete */;
2982 else
2983 Diag(ConsumeToken(), diag::err_deleted_non_function);
2984 return ExprError();
2985 }
2986 } else if (Tok.is(tok::kw_default)) {
2987 if (IsFunction)
2988 Diag(Tok, diag::err_default_delete_in_multiple_declaration)
2989 << 0 /* default */;
2990 else
2991 Diag(ConsumeToken(), diag::err_default_special_members)
2992 << getLangOpts().CPlusPlus2a;
2993 return ExprError();
2994 }
2995 }
2996 if (const auto *PD = dyn_cast_or_null<MSPropertyDecl>(D)) {
2997 Diag(Tok, diag::err_ms_property_initializer) << PD;
2998 return ExprError();
2999 }
3000 return ParseInitializer();
3001 }
3002
3003 void Parser::SkipCXXMemberSpecification(SourceLocation RecordLoc,
3004 SourceLocation AttrFixitLoc,
3005 unsigned TagType, Decl *TagDecl) {
3006 // Skip the optional 'final' keyword.
3007 if (getLangOpts().CPlusPlus && Tok.is(tok::identifier)) {
3008 assert(isCXX11FinalKeyword() && "not a class definition");
3009 ConsumeToken();
3010
3011 // Diagnose any C++11 attributes after 'final' keyword.
3012 // We deliberately discard these attributes.
3013 ParsedAttributesWithRange Attrs(AttrFactory);
3014 CheckMisplacedCXX11Attribute(Attrs, AttrFixitLoc);
3015
3016 // This can only happen if we had malformed misplaced attributes;
3017 // we only get called if there is a colon or left-brace after the
3018 // attributes.
3019 if (Tok.isNot(tok::colon) && Tok.isNot(tok::l_brace))
3020 return;
3021 }
3022
3023 // Skip the base clauses. This requires actually parsing them, because
3024 // otherwise we can't be sure where they end (a left brace may appear
3025 // within a template argument).
3026 if (Tok.is(tok::colon)) {
3027 // Enter the scope of the class so that we can correctly parse its bases.
3028 ParseScope ClassScope(this, Scope::ClassScope|Scope::DeclScope);
3029 ParsingClassDefinition ParsingDef(*this, TagDecl, /*NonNestedClass*/ true,
3030 TagType == DeclSpec::TST_interface);
3031 auto OldContext =
3032 Actions.ActOnTagStartSkippedDefinition(getCurScope(), TagDecl);
3033
3034 // Parse the bases but don't attach them to the class.
3035 ParseBaseClause(nullptr);
3036
3037 Actions.ActOnTagFinishSkippedDefinition(OldContext);
3038
3039 if (!Tok.is(tok::l_brace)) {
3040 Diag(PP.getLocForEndOfToken(PrevTokLocation),
3041 diag::err_expected_lbrace_after_base_specifiers);
3042 return;
3043 }
3044 }
3045
3046 // Skip the body.
3047 assert(Tok.is(tok::l_brace));
3048 BalancedDelimiterTracker T(*this, tok::l_brace);
3049 T.consumeOpen();
3050 T.skipToEnd();
3051
3052 // Parse and discard any trailing attributes.
3053 ParsedAttributes Attrs(AttrFactory);
3054 if (Tok.is(tok::kw___attribute))
3055 MaybeParseGNUAttributes(Attrs);
3056 }
3057
3058 Parser::DeclGroupPtrTy Parser::ParseCXXClassMemberDeclarationWithPragmas(
3059 AccessSpecifier &AS, ParsedAttributesWithRange &AccessAttrs,
3060 DeclSpec::TST TagType, Decl *TagDecl) {
3061 ParenBraceBracketBalancer BalancerRAIIObj(*this);
3062
3063 switch (Tok.getKind()) {
3064 case tok::kw___if_exists:
3065 case tok::kw___if_not_exists:
3066 ParseMicrosoftIfExistsClassDeclaration(TagType, AccessAttrs, AS);
3067 return nullptr;
3068
3069 case tok::semi:
3070 // Check for extraneous top-level semicolon.
3071 ConsumeExtraSemi(InsideStruct, TagType);
3072 return nullptr;
3073
3074 // Handle pragmas that can appear as member declarations.
3075 case tok::annot_pragma_vis:
3076 HandlePragmaVisibility();
3077 return nullptr;
3078 case tok::annot_pragma_pack:
3079 HandlePragmaPack();
3080 return nullptr;
3081 case tok::annot_pragma_align:
3082 HandlePragmaAlign();
3083 return nullptr;
3084 case tok::annot_pragma_ms_pointers_to_members:
3085 HandlePragmaMSPointersToMembers();
3086 return nullptr;
3087 case tok::annot_pragma_ms_pragma:
3088 HandlePragmaMSPragma();
3089 return nullptr;
3090 case tok::annot_pragma_ms_vtordisp:
3091 HandlePragmaMSVtorDisp();
3092 return nullptr;
3093 case tok::annot_pragma_dump:
3094 HandlePragmaDump();
3095 return nullptr;
3096
3097 case tok::kw_namespace:
3098 // If we see a namespace here, a close brace was missing somewhere.
3099 DiagnoseUnexpectedNamespace(cast<NamedDecl>(TagDecl));
3100 return nullptr;
3101
3102 case tok::kw_private:
3103 // FIXME: We don't accept GNU attributes on access specifiers in OpenCL mode
3104 // yet.
3105 if (getLangOpts().OpenCL && !NextToken().is(tok::colon))
3106 return ParseCXXClassMemberDeclaration(AS, AccessAttrs);
3107 LLVM_FALLTHROUGH;
3108 case tok::kw_public:
3109 case tok::kw_protected: {
3110 AccessSpecifier NewAS = getAccessSpecifierIfPresent();
3111 assert(NewAS != AS_none);
3112 // Current token is a C++ access specifier.
3113 AS = NewAS;
3114 SourceLocation ASLoc = Tok.getLocation();
3115 unsigned TokLength = Tok.getLength();
3116 ConsumeToken();
3117 AccessAttrs.clear();
3118 MaybeParseGNUAttributes(AccessAttrs);
3119
3120 SourceLocation EndLoc;
3121 if (TryConsumeToken(tok::colon, EndLoc)) {
3122 } else if (TryConsumeToken(tok::semi, EndLoc)) {
3123 Diag(EndLoc, diag::err_expected)
3124 << tok::colon << FixItHint::CreateReplacement(EndLoc, ":");
3125 } else {
3126 EndLoc = ASLoc.getLocWithOffset(TokLength);
3127 Diag(EndLoc, diag::err_expected)
3128 << tok::colon << FixItHint::CreateInsertion(EndLoc, ":");
3129 }
3130
3131 // The Microsoft extension __interface does not permit non-public
3132 // access specifiers.
3133 if (TagType == DeclSpec::TST_interface && AS != AS_public) {
3134 Diag(ASLoc, diag::err_access_specifier_interface) << (AS == AS_protected);
3135 }
3136
3137 if (Actions.ActOnAccessSpecifier(NewAS, ASLoc, EndLoc, AccessAttrs)) {
3138 // found another attribute than only annotations
3139 AccessAttrs.clear();
3140 }
3141
3142 return nullptr;
3143 }
3144
3145 case tok::annot_pragma_openmp:
3146 return ParseOpenMPDeclarativeDirectiveWithExtDecl(
3147 AS, AccessAttrs, /*Delayed=*/true, TagType, TagDecl);
3148
3149 default:
3150 if (tok::isPragmaAnnotation(Tok.getKind())) {
3151 Diag(Tok.getLocation(), diag::err_pragma_misplaced_in_decl)
3152 << DeclSpec::getSpecifierName(TagType,
3153 Actions.getASTContext().getPrintingPolicy());
3154 ConsumeAnnotationToken();
3155 return nullptr;
3156 }
3157 return ParseCXXClassMemberDeclaration(AS, AccessAttrs);
3158 }
3159 }
3160
3161 /// ParseCXXMemberSpecification - Parse the class definition.
3162 ///
3163 /// member-specification:
3164 /// member-declaration member-specification[opt]
3165 /// access-specifier ':' member-specification[opt]
3166 ///
3167 void Parser::ParseCXXMemberSpecification(SourceLocation RecordLoc,
3168 SourceLocation AttrFixitLoc,
3169 ParsedAttributesWithRange &Attrs,
3170 unsigned TagType, Decl *TagDecl) {
3171 assert((TagType == DeclSpec::TST_struct ||
3172 TagType == DeclSpec::TST_interface ||
3173 TagType == DeclSpec::TST_union ||
3174 TagType == DeclSpec::TST_class) && "Invalid TagType!");
3175
3176 llvm::TimeTraceScope TimeScope("ParseClass", [&]() {
3177 if (auto *TD = dyn_cast_or_null<NamedDecl>(TagDecl))
3178 return TD->getQualifiedNameAsString();
3179 return std::string("<anonymous>");
3180 });
3181
3182 PrettyDeclStackTraceEntry CrashInfo(Actions.Context, TagDecl, RecordLoc,
3183 "parsing struct/union/class body");
3184
3185 // Determine whether this is a non-nested class. Note that local
3186 // classes are *not* considered to be nested classes.
3187 bool NonNestedClass = true;
3188 if (!ClassStack.empty()) {
3189 for (const Scope *S = getCurScope(); S; S = S->getParent()) {
3190 if (S->isClassScope()) {
3191 // We're inside a class scope, so this is a nested class.
3192 NonNestedClass = false;
3193
3194 // The Microsoft extension __interface does not permit nested classes.
3195 if (getCurrentClass().IsInterface) {
3196 Diag(RecordLoc, diag::err_invalid_member_in_interface)
3197 << /*ErrorType=*/6
3198 << (isa<NamedDecl>(TagDecl)
3199 ? cast<NamedDecl>(TagDecl)->getQualifiedNameAsString()
3200 : "(anonymous)");
3201 }
3202 break;
3203 }
3204
3205 if ((S->getFlags() & Scope::FnScope))
3206 // If we're in a function or function template then this is a local
3207 // class rather than a nested class.
3208 break;
3209 }
3210 }
3211
3212 // Enter a scope for the class.
3213 ParseScope ClassScope(this, Scope::ClassScope|Scope::DeclScope);
3214
3215 // Note that we are parsing a new (potentially-nested) class definition.
3216 ParsingClassDefinition ParsingDef(*this, TagDecl, NonNestedClass,
3217 TagType == DeclSpec::TST_interface);
3218
3219 if (TagDecl)
3220 Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
3221
3222 SourceLocation FinalLoc;
3223 bool IsFinalSpelledSealed = false;
3224
3225 // Parse the optional 'final' keyword.
3226 if (getLangOpts().CPlusPlus && Tok.is(tok::identifier)) {
3227 VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier(Tok);
3228 assert((Specifier == VirtSpecifiers::VS_Final ||
3229 Specifier == VirtSpecifiers::VS_GNU_Final ||
3230 Specifier == VirtSpecifiers::VS_Sealed) &&
3231 "not a class definition");
3232 FinalLoc = ConsumeToken();
3233 IsFinalSpelledSealed = Specifier == VirtSpecifiers::VS_Sealed;
3234
3235 if (TagType == DeclSpec::TST_interface)
3236 Diag(FinalLoc, diag::err_override_control_interface)
3237 << VirtSpecifiers::getSpecifierName(Specifier);
3238 else if (Specifier == VirtSpecifiers::VS_Final)
3239 Diag(FinalLoc, getLangOpts().CPlusPlus11
3240 ? diag::warn_cxx98_compat_override_control_keyword
3241 : diag::ext_override_control_keyword)
3242 << VirtSpecifiers::getSpecifierName(Specifier);
3243 else if (Specifier == VirtSpecifiers::VS_Sealed)
3244 Diag(FinalLoc, diag::ext_ms_sealed_keyword);
3245 else if (Specifier == VirtSpecifiers::VS_GNU_Final)
3246 Diag(FinalLoc, diag::ext_warn_gnu_final);
3247
3248 // Parse any C++11 attributes after 'final' keyword.
3249 // These attributes are not allowed to appear here,
3250 // and the only possible place for them to appertain
3251 // to the class would be between class-key and class-name.
3252 CheckMisplacedCXX11Attribute(Attrs, AttrFixitLoc);
3253
3254 // ParseClassSpecifier() does only a superficial check for attributes before
3255 // deciding to call this method. For example, for
3256 // `class C final alignas ([l) {` it will decide that this looks like a
3257 // misplaced attribute since it sees `alignas '(' ')'`. But the actual
3258 // attribute parsing code will try to parse the '[' as a constexpr lambda
3259 // and consume enough tokens that the alignas parsing code will eat the
3260 // opening '{'. So bail out if the next token isn't one we expect.
3261 if (!Tok.is(tok::colon) && !Tok.is(tok::l_brace)) {
3262 if (TagDecl)
3263 Actions.ActOnTagDefinitionError(getCurScope(), TagDecl);
3264 return;
3265 }
3266 }
3267
3268 if (Tok.is(tok::colon)) {
3269 ParseScope InheritanceScope(this, getCurScope()->getFlags() |
3270 Scope::ClassInheritanceScope);
3271
3272 ParseBaseClause(TagDecl);
3273 if (!Tok.is(tok::l_brace)) {
3274 bool SuggestFixIt = false;
3275 SourceLocation BraceLoc = PP.getLocForEndOfToken(PrevTokLocation);
3276 if (Tok.isAtStartOfLine()) {
3277 switch (Tok.getKind()) {
3278 case tok::kw_private:
3279 case tok::kw_protected:
3280 case tok::kw_public:
3281 SuggestFixIt = NextToken().getKind() == tok::colon;
3282 break;
3283 case tok::kw_static_assert:
3284 case tok::r_brace:
3285 case tok::kw_using:
3286 // base-clause can have simple-template-id; 'template' can't be there
3287 case tok::kw_template:
3288 SuggestFixIt = true;
3289 break;
3290 case tok::identifier:
3291 SuggestFixIt = isConstructorDeclarator(true);
3292 break;
3293 default:
3294 SuggestFixIt = isCXXSimpleDeclaration(/*AllowForRangeDecl=*/false);
3295 break;
3296 }
3297 }
3298 DiagnosticBuilder LBraceDiag =
3299 Diag(BraceLoc, diag::err_expected_lbrace_after_base_specifiers);
3300 if (SuggestFixIt) {
3301 LBraceDiag << FixItHint::CreateInsertion(BraceLoc, " {");
3302 // Try recovering from missing { after base-clause.
3303 PP.EnterToken(Tok, /*IsReinject*/true);
3304 Tok.setKind(tok::l_brace);
3305 } else {
3306 if (TagDecl)
3307 Actions.ActOnTagDefinitionError(getCurScope(), TagDecl);
3308 return;
3309 }
3310 }
3311 }
3312
3313 assert(Tok.is(tok::l_brace));
3314 BalancedDelimiterTracker T(*this, tok::l_brace);
3315 T.consumeOpen();
3316
3317 if (TagDecl)
3318 Actions.ActOnStartCXXMemberDeclarations(getCurScope(), TagDecl, FinalLoc,
3319 IsFinalSpelledSealed,
3320 T.getOpenLocation());
3321
3322 // C++ 11p3: Members of a class defined with the keyword class are private
3323 // by default. Members of a class defined with the keywords struct or union
3324 // are public by default.
3325 AccessSpecifier CurAS;
3326 if (TagType == DeclSpec::TST_class)
3327 CurAS = AS_private;
3328 else
3329 CurAS = AS_public;
3330 ParsedAttributesWithRange AccessAttrs(AttrFactory);
3331
3332 if (TagDecl) {
3333 // While we still have something to read, read the member-declarations.
3334 while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
3335 Tok.isNot(tok::eof)) {
3336 // Each iteration of this loop reads one member-declaration.
3337 ParseCXXClassMemberDeclarationWithPragmas(
3338 CurAS, AccessAttrs, static_cast<DeclSpec::TST>(TagType), TagDecl);
3339 }
3340 T.consumeClose();
3341 } else {
3342 SkipUntil(tok::r_brace);
3343 }
3344
3345 // If attributes exist after class contents, parse them.
3346 ParsedAttributes attrs(AttrFactory);
3347 MaybeParseGNUAttributes(attrs);
3348
3349 if (TagDecl)
3350 Actions.ActOnFinishCXXMemberSpecification(getCurScope(), RecordLoc, TagDecl,
3351 T.getOpenLocation(),
3352 T.getCloseLocation(), attrs);
3353
3354 // C++11 [class.mem]p2:
3355 // Within the class member-specification, the class is regarded as complete
3356 // within function bodies, default arguments, exception-specifications, and
3357 // brace-or-equal-initializers for non-static data members (including such
3358 // things in nested classes).
3359 if (TagDecl && NonNestedClass) {
3360 // We are not inside a nested class. This class and its nested classes
3361 // are complete and we can parse the delayed portions of method
3362 // declarations and the lexed inline method definitions, along with any
3363 // delayed attributes.
3364 SourceLocation SavedPrevTokLocation = PrevTokLocation;
3365 ParseLexedPragmas(getCurrentClass());
3366 ParseLexedAttributes(getCurrentClass());
3367 ParseLexedMethodDeclarations(getCurrentClass());
3368
3369 // We've finished with all pending member declarations.
3370 Actions.ActOnFinishCXXMemberDecls();
3371
3372 ParseLexedMemberInitializers(getCurrentClass());
3373 ParseLexedMethodDefs(getCurrentClass());
3374 PrevTokLocation = SavedPrevTokLocation;
3375
3376 // We've finished parsing everything, including default argument
3377 // initializers.
3378 Actions.ActOnFinishCXXNonNestedClass();
3379 }
3380
3381 if (TagDecl)
3382 Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl, T.getRange());
3383
3384 // Leave the class scope.
3385 ParsingDef.Pop();
3386 ClassScope.Exit();
3387 }
3388
3389 void Parser::DiagnoseUnexpectedNamespace(NamedDecl *D) {
3390 assert(Tok.is(tok::kw_namespace));
3391
3392 // FIXME: Suggest where the close brace should have gone by looking
3393 // at indentation changes within the definition body.
3394 Diag(D->getLocation(),
3395 diag::err_missing_end_of_definition) << D;
3396 Diag(Tok.getLocation(),
3397 diag::note_missing_end_of_definition_before) << D;
3398
3399 // Push '};' onto the token stream to recover.
3400 PP.EnterToken(Tok, /*IsReinject*/ true);
3401
3402 Tok.startToken();
3403 Tok.setLocation(PP.getLocForEndOfToken(PrevTokLocation));
3404 Tok.setKind(tok::semi);
3405 PP.EnterToken(Tok, /*IsReinject*/ true);
3406
3407 Tok.setKind(tok::r_brace);
3408 }
3409
3410 /// ParseConstructorInitializer - Parse a C++ constructor initializer,
3411 /// which explicitly initializes the members or base classes of a
3412 /// class (C++ [class.base.init]). For example, the three initializers
3413 /// after the ':' in the Derived constructor below:
3414 ///
3415 /// @code
3416 /// class Base { };
3417 /// class Derived : Base {
3418 /// int x;
3419 /// float f;
3420 /// public:
3421 /// Derived(float f) : Base(), x(17), f(f) { }
3422 /// };
3423 /// @endcode
3424 ///
3425 /// [C++] ctor-initializer:
3426 /// ':' mem-initializer-list
3427 ///
3428 /// [C++] mem-initializer-list:
3429 /// mem-initializer ...[opt]
3430 /// mem-initializer ...[opt] , mem-initializer-list
3431 void Parser::ParseConstructorInitializer(Decl *ConstructorDecl) {
3432 assert(Tok.is(tok::colon) &&
3433 "Constructor initializer always starts with ':'");
3434
3435 // Poison the SEH identifiers so they are flagged as illegal in constructor
3436 // initializers.
3437 PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true);
3438 SourceLocation ColonLoc = ConsumeToken();
3439
3440 SmallVector<CXXCtorInitializer*, 4> MemInitializers;
3441 bool AnyErrors = false;
3442
3443 do {
3444 if (Tok.is(tok::code_completion)) {
3445 Actions.CodeCompleteConstructorInitializer(ConstructorDecl,
3446 MemInitializers);
3447 return cutOffParsing();
3448 }
3449
3450 MemInitResult MemInit = ParseMemInitializer(ConstructorDecl);
3451 if (!MemInit.isInvalid())
3452 MemInitializers.push_back(MemInit.get());
3453 else
3454 AnyErrors = true;
3455
3456 if (Tok.is(tok::comma))
3457 ConsumeToken();
3458 else if (Tok.is(tok::l_brace))
3459 break;
3460 // If the previous initializer was valid and the next token looks like a
3461 // base or member initializer, assume that we're just missing a comma.
3462 else if (!MemInit.isInvalid() &&
3463 Tok.isOneOf(tok::identifier, tok::coloncolon)) {
3464 SourceLocation Loc = PP.getLocForEndOfToken(PrevTokLocation);
3465 Diag(Loc, diag::err_ctor_init_missing_comma)
3466 << FixItHint::CreateInsertion(Loc, ", ");
3467 } else {
3468 // Skip over garbage, until we get to '{'. Don't eat the '{'.
3469 if (!MemInit.isInvalid())
3470 Diag(Tok.getLocation(), diag::err_expected_either) << tok::l_brace
3471 << tok::comma;
3472 SkipUntil(tok::l_brace, StopAtSemi | StopBeforeMatch);
3473 break;
3474 }
3475 } while (true);
3476
3477 Actions.ActOnMemInitializers(ConstructorDecl, ColonLoc, MemInitializers,
3478 AnyErrors);
3479 }
3480
3481 /// ParseMemInitializer - Parse a C++ member initializer, which is
3482 /// part of a constructor initializer that explicitly initializes one
3483 /// member or base class (C++ [class.base.init]). See
3484 /// ParseConstructorInitializer for an example.
3485 ///
3486 /// [C++] mem-initializer:
3487 /// mem-initializer-id '(' expression-list[opt] ')'
3488 /// [C++0x] mem-initializer-id braced-init-list
3489 ///
3490 /// [C++] mem-initializer-id:
3491 /// '::'[opt] nested-name-specifier[opt] class-name
3492 /// identifier
3493 MemInitResult Parser::ParseMemInitializer(Decl *ConstructorDecl) {
3494 // parse '::'[opt] nested-name-specifier[opt]
3495 CXXScopeSpec SS;
3496 if (ParseOptionalCXXScopeSpecifier(SS, nullptr, /*EnteringContext=*/false))
3497 return true;
3498
3499 // : identifier
3500 IdentifierInfo *II = nullptr;
3501 SourceLocation IdLoc = Tok.getLocation();
3502 // : declype(...)
3503 DeclSpec DS(AttrFactory);
3504 // : template_name<...>
3505 ParsedType TemplateTypeTy;
3506
3507 if (Tok.is(tok::identifier)) {
3508 // Get the identifier. This may be a member name or a class name,
3509 // but we'll let the semantic analysis determine which it is.
3510 II = Tok.getIdentifierInfo();
3511 ConsumeToken();
3512 } else if (Tok.is(tok::annot_decltype)) {
3513 // Get the decltype expression, if there is one.
3514 // Uses of decltype will already have been converted to annot_decltype by
3515 // ParseOptionalCXXScopeSpecifier at this point.
3516 // FIXME: Can we get here with a scope specifier?
3517 ParseDecltypeSpecifier(DS);
3518 } else {
3519 TemplateIdAnnotation *TemplateId = Tok.is(tok::annot_template_id)
3520 ? takeTemplateIdAnnotation(Tok)
3521 : nullptr;
3522 if (TemplateId && (TemplateId->Kind == TNK_Type_template ||
3523 TemplateId->Kind == TNK_Dependent_template_name ||
3524 TemplateId->Kind == TNK_Undeclared_template)) {
3525 AnnotateTemplateIdTokenAsType(SS, /*IsClassName*/true);
3526 assert(Tok.is(tok::annot_typename) && "template-id -> type failed");
3527 TemplateTypeTy = getTypeAnnotation(Tok);
3528 ConsumeAnnotationToken();
3529 if (!TemplateTypeTy)
3530 return true;
3531 } else {
3532 Diag(Tok, diag::err_expected_member_or_base_name);
3533 return true;
3534 }
3535 }
3536
3537 // Parse the '('.
3538 if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
3539 Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
3540
3541 // FIXME: Add support for signature help inside initializer lists.
3542 ExprResult InitList = ParseBraceInitializer();
3543 if (InitList.isInvalid())
3544 return true;
3545
3546 SourceLocation EllipsisLoc;
3547 TryConsumeToken(tok::ellipsis, EllipsisLoc);
3548
3549 return Actions.ActOnMemInitializer(ConstructorDecl, getCurScope(), SS, II,
3550 TemplateTypeTy, DS, IdLoc,
3551 InitList.get(), EllipsisLoc);
3552 } else if(Tok.is(tok::l_paren)) {
3553 BalancedDelimiterTracker T(*this, tok::l_paren);
3554 T.consumeOpen();
3555
3556 // Parse the optional expression-list.
3557 ExprVector ArgExprs;
3558 CommaLocsTy CommaLocs;
3559 auto RunSignatureHelp = [&] {
3560 QualType PreferredType = Actions.ProduceCtorInitMemberSignatureHelp(
3561 getCurScope(), ConstructorDecl, SS, TemplateTypeTy, ArgExprs, II,
3562 T.getOpenLocation());
3563 CalledSignatureHelp = true;
3564 return PreferredType;
3565 };
3566 if (Tok.isNot(tok::r_paren) &&
3567 ParseExpressionList(ArgExprs, CommaLocs, [&] {
3568 PreferredType.enterFunctionArgument(Tok.getLocation(),
3569 RunSignatureHelp);
3570 })) {
3571 if (PP.isCodeCompletionReached() && !CalledSignatureHelp)
3572 RunSignatureHelp();
3573 SkipUntil(tok::r_paren, StopAtSemi);
3574 return true;
3575 }
3576
3577 T.consumeClose();
3578
3579 SourceLocation EllipsisLoc;
3580 TryConsumeToken(tok::ellipsis, EllipsisLoc);
3581
3582 return Actions.ActOnMemInitializer(ConstructorDecl, getCurScope(), SS, II,
3583 TemplateTypeTy, DS, IdLoc,
3584 T.getOpenLocation(), ArgExprs,
3585 T.getCloseLocation(), EllipsisLoc);
3586 }
3587
3588 if (getLangOpts().CPlusPlus11)
3589 return Diag(Tok, diag::err_expected_either) << tok::l_paren << tok::l_brace;
3590 else
3591 return Diag(Tok, diag::err_expected) << tok::l_paren;
3592 }
3593
3594 /// Parse a C++ exception-specification if present (C++0x [except.spec]).
3595 ///
3596 /// exception-specification:
3597 /// dynamic-exception-specification
3598 /// noexcept-specification
3599 ///
3600 /// noexcept-specification:
3601 /// 'noexcept'
3602 /// 'noexcept' '(' constant-expression ')'
3603 ExceptionSpecificationType
3604 Parser::tryParseExceptionSpecification(bool Delayed,
3605 SourceRange &SpecificationRange,
3606 SmallVectorImpl<ParsedType> &DynamicExceptions,
3607 SmallVectorImpl<SourceRange> &DynamicExceptionRanges,
3608 ExprResult &NoexceptExpr,
3609 CachedTokens *&ExceptionSpecTokens) {
3610 ExceptionSpecificationType Result = EST_None;
3611 ExceptionSpecTokens = nullptr;
3612
3613 // Handle delayed parsing of exception-specifications.
3614 if (Delayed) {
3615 if (Tok.isNot(tok::kw_throw) && Tok.isNot(tok::kw_noexcept))
3616 return EST_None;
3617
3618 // Consume and cache the starting token.
3619 bool IsNoexcept = Tok.is(tok::kw_noexcept);
3620 Token StartTok = Tok;
3621 SpecificationRange = SourceRange(ConsumeToken());
3622
3623 // Check for a '('.
3624 if (!Tok.is(tok::l_paren)) {
3625 // If this is a bare 'noexcept', we're done.
3626 if (IsNoexcept) {
3627 Diag(Tok, diag::warn_cxx98_compat_noexcept_decl);
3628 NoexceptExpr = nullptr;
3629 return EST_BasicNoexcept;
3630 }
3631
3632 Diag(Tok, diag::err_expected_lparen_after) << "throw";
3633 return EST_DynamicNone;
3634 }
3635
3636 // Cache the tokens for the exception-specification.
3637 ExceptionSpecTokens = new CachedTokens;
3638 ExceptionSpecTokens->push_back(StartTok); // 'throw' or 'noexcept'
3639 ExceptionSpecTokens->push_back(Tok); // '('
3640 SpecificationRange.setEnd(ConsumeParen()); // '('
3641
3642 ConsumeAndStoreUntil(tok::r_paren, *ExceptionSpecTokens,
3643 /*StopAtSemi=*/true,
3644 /*ConsumeFinalToken=*/true);
3645 SpecificationRange.setEnd(ExceptionSpecTokens->back().getLocation());
3646
3647 return EST_Unparsed;
3648 }
3649
3650 // See if there's a dynamic specification.
3651 if (Tok.is(tok::kw_throw)) {
3652 Result = ParseDynamicExceptionSpecification(SpecificationRange,
3653 DynamicExceptions,
3654 DynamicExceptionRanges);
3655 assert(DynamicExceptions.size() == DynamicExceptionRanges.size() &&
3656 "Produced different number of exception types and ranges.");
3657 }
3658
3659 // If there's no noexcept specification, we're done.
3660 if (Tok.isNot(tok::kw_noexcept))
3661 return Result;
3662
3663 Diag(Tok, diag::warn_cxx98_compat_noexcept_decl);
3664
3665 // If we already had a dynamic specification, parse the noexcept for,
3666 // recovery, but emit a diagnostic and don't store the results.
3667 SourceRange NoexceptRange;
3668 ExceptionSpecificationType NoexceptType = EST_None;
3669
3670 SourceLocation KeywordLoc = ConsumeToken();
3671 if (Tok.is(tok::l_paren)) {
3672 // There is an argument.
3673 BalancedDelimiterTracker T(*this, tok::l_paren);
3674 T.consumeOpen();
3675 NoexceptExpr = ParseConstantExpression();
3676 T.consumeClose();
3677 if (!NoexceptExpr.isInvalid()) {
3678 NoexceptExpr = Actions.ActOnNoexceptSpec(KeywordLoc, NoexceptExpr.get(),
3679 NoexceptType);
3680 NoexceptRange = SourceRange(KeywordLoc, T.getCloseLocation());
3681 } else {
3682 NoexceptType = EST_BasicNoexcept;
3683 }
3684 } else {
3685 // There is no argument.
3686 NoexceptType = EST_BasicNoexcept;
3687 NoexceptRange = SourceRange(KeywordLoc, KeywordLoc);
3688 }
3689
3690 if (Result == EST_None) {
3691 SpecificationRange = NoexceptRange;
3692 Result = NoexceptType;
3693
3694 // If there's a dynamic specification after a noexcept specification,
3695 // parse that and ignore the results.
3696 if (Tok.is(tok::kw_throw)) {
3697 Diag(Tok.getLocation(), diag::err_dynamic_and_noexcept_specification);
3698 ParseDynamicExceptionSpecification(NoexceptRange, DynamicExceptions,
3699 DynamicExceptionRanges);
3700 }
3701 } else {
3702 Diag(Tok.getLocation(), diag::err_dynamic_and_noexcept_specification);
3703 }
3704
3705 return Result;
3706 }
3707
3708 static void diagnoseDynamicExceptionSpecification(
3709 Parser &P, SourceRange Range, bool IsNoexcept) {
3710 if (P.getLangOpts().CPlusPlus11) {
3711 const char *Replacement = IsNoexcept ? "noexcept" : "noexcept(false)";
3712 P.Diag(Range.getBegin(),
3713 P.getLangOpts().CPlusPlus17 && !IsNoexcept
3714 ? diag::ext_dynamic_exception_spec
3715 : diag::warn_exception_spec_deprecated)
3716 << Range;
3717 P.Diag(Range.getBegin(), diag::note_exception_spec_deprecated)
3718 << Replacement << FixItHint::CreateReplacement(Range, Replacement);
3719 }
3720 }
3721
3722 /// ParseDynamicExceptionSpecification - Parse a C++
3723 /// dynamic-exception-specification (C++ [except.spec]).
3724 ///
3725 /// dynamic-exception-specification:
3726 /// 'throw' '(' type-id-list [opt] ')'
3727 /// [MS] 'throw' '(' '...' ')'
3728 ///
3729 /// type-id-list:
3730 /// type-id ... [opt]
3731 /// type-id-list ',' type-id ... [opt]
3732 ///
3733 ExceptionSpecificationType Parser::ParseDynamicExceptionSpecification(
3734 SourceRange &SpecificationRange,
3735 SmallVectorImpl<ParsedType> &Exceptions,
3736 SmallVectorImpl<SourceRange> &Ranges) {
3737 assert(Tok.is(tok::kw_throw) && "expected throw");
3738
3739 SpecificationRange.setBegin(ConsumeToken());
3740 BalancedDelimiterTracker T(*this, tok::l_paren);
3741 if (T.consumeOpen()) {
3742 Diag(Tok, diag::err_expected_lparen_after) << "throw";
3743 SpecificationRange.setEnd(SpecificationRange.getBegin());
3744 return EST_DynamicNone;
3745 }
3746
3747 // Parse throw(...), a Microsoft extension that means "this function
3748 // can throw anything".
3749 if (Tok.is(tok::ellipsis)) {
3750 SourceLocation EllipsisLoc = ConsumeToken();
3751 if (!getLangOpts().MicrosoftExt)
3752 Diag(EllipsisLoc, diag::ext_ellipsis_exception_spec);
3753 T.consumeClose();
3754 SpecificationRange.setEnd(T.getCloseLocation());
3755 diagnoseDynamicExceptionSpecification(*this, SpecificationRange, false);
3756 return EST_MSAny;
3757 }
3758
3759 // Parse the sequence of type-ids.
3760 SourceRange Range;
3761 while (Tok.isNot(tok::r_paren)) {
3762 TypeResult Res(ParseTypeName(&Range));
3763
3764 if (Tok.is(tok::ellipsis)) {
3765 // C++0x [temp.variadic]p5:
3766 // - In a dynamic-exception-specification (15.4); the pattern is a
3767 // type-id.
3768 SourceLocation Ellipsis = ConsumeToken();
3769 Range.setEnd(Ellipsis);
3770 if (!Res.isInvalid())
3771 Res = Actions.ActOnPackExpansion(Res.get(), Ellipsis);
3772 }
3773
3774 if (!Res.isInvalid()) {
3775 Exceptions.push_back(Res.get());
3776 Ranges.push_back(Range);
3777 }
3778
3779 if (!TryConsumeToken(tok::comma))
3780 break;
3781 }
3782
3783 T.consumeClose();
3784 SpecificationRange.setEnd(T.getCloseLocation());
3785 diagnoseDynamicExceptionSpecification(*this, SpecificationRange,
3786 Exceptions.empty());
3787 return Exceptions.empty() ? EST_DynamicNone : EST_Dynamic;
3788 }
3789
3790 /// ParseTrailingReturnType - Parse a trailing return type on a new-style
3791 /// function declaration.
3792 TypeResult Parser::ParseTrailingReturnType(SourceRange &Range,
3793 bool MayBeFollowedByDirectInit) {
3794 assert(Tok.is(tok::arrow) && "expected arrow");
3795
3796 ConsumeToken();
3797
3798 return ParseTypeName(&Range, MayBeFollowedByDirectInit
3799 ? DeclaratorContext::TrailingReturnVarContext
3800 : DeclaratorContext::TrailingReturnContext);
3801 }
3802
3803 /// Parse a requires-clause as part of a function declaration.
3804 void Parser::ParseTrailingRequiresClause(Declarator &D) {
3805 assert(Tok.is(tok::kw_requires) && "expected requires");
3806
3807 SourceLocation RequiresKWLoc = ConsumeToken();
3808
3809 ExprResult TrailingRequiresClause;
3810 ParseScope ParamScope(this,
3811 Scope::DeclScope |
3812 Scope::FunctionDeclarationScope |
3813 Scope::FunctionPrototypeScope);
3814
3815 Actions.ActOnStartTrailingRequiresClause(getCurScope(), D);
3816
3817 llvm::Optional<Sema::CXXThisScopeRAII> ThisScope;
3818 InitCXXThisScopeForDeclaratorIfRelevant(D, D.getDeclSpec(), ThisScope);
3819
3820 TrailingRequiresClause =
3821 ParseConstraintLogicalOrExpression(/*IsTrailingRequiresClause=*/true);
3822
3823 TrailingRequiresClause =
3824 Actions.ActOnFinishTrailingRequiresClause(TrailingRequiresClause);
3825
3826 if (!D.isDeclarationOfFunction()) {
3827 Diag(RequiresKWLoc,
3828 diag::err_requires_clause_on_declarator_not_declaring_a_function);
3829 return;
3830 }
3831
3832 if (TrailingRequiresClause.isInvalid())
3833 SkipUntil({tok::l_brace, tok::arrow, tok::kw_try, tok::comma, tok::colon},
3834 StopAtSemi | StopBeforeMatch);
3835 else
3836 D.setTrailingRequiresClause(TrailingRequiresClause.get());
3837
3838 // Did the user swap the trailing return type and requires clause?
3839 if (D.isFunctionDeclarator() && Tok.is(tok::arrow) &&
3840 D.getDeclSpec().getTypeSpecType() == TST_auto) {
3841 SourceLocation ArrowLoc = Tok.getLocation();
3842 SourceRange Range;
3843 TypeResult TrailingReturnType =
3844 ParseTrailingReturnType(Range, /*MayBeFollowedByDirectInit=*/false);
3845
3846 if (!TrailingReturnType.isInvalid()) {
3847 Diag(ArrowLoc,
3848 diag::err_requires_clause_must_appear_after_trailing_return)
3849 << Range;
3850 auto &FunctionChunk = D.getFunctionTypeInfo();
3851 FunctionChunk.HasTrailingReturnType = TrailingReturnType.isUsable();
3852 FunctionChunk.TrailingReturnType = TrailingReturnType.get();
3853 } else
3854 SkipUntil({tok::equal, tok::l_brace, tok::arrow, tok::kw_try, tok::comma},
3855 StopAtSemi | StopBeforeMatch);
3856 }
3857 }
3858
3859 /// We have just started parsing the definition of a new class,
3860 /// so push that class onto our stack of classes that is currently
3861 /// being parsed.
3862 Sema::ParsingClassState
3863 Parser::PushParsingClass(Decl *ClassDecl, bool NonNestedClass,
3864 bool IsInterface) {
3865 assert((NonNestedClass || !ClassStack.empty()) &&
3866 "Nested class without outer class");
3867 ClassStack.push(new ParsingClass(ClassDecl, NonNestedClass, IsInterface));
3868 return Actions.PushParsingClass();
3869 }
3870
3871 /// Deallocate the given parsed class and all of its nested
3872 /// classes.
3873 void Parser::DeallocateParsedClasses(Parser::ParsingClass *Class) {
3874 for (unsigned I = 0, N = Class->LateParsedDeclarations.size(); I != N; ++I)
3875 delete Class->LateParsedDeclarations[I];
3876 delete Class;
3877 }
3878
3879 /// Pop the top class of the stack of classes that are
3880 /// currently being parsed.
3881 ///
3882 /// This routine should be called when we have finished parsing the
3883 /// definition of a class, but have not yet popped the Scope
3884 /// associated with the class's definition.
3885 void Parser::PopParsingClass(Sema::ParsingClassState state) {
3886 assert(!ClassStack.empty() && "Mismatched push/pop for class parsing");
3887
3888 Actions.PopParsingClass(state);
3889
3890 ParsingClass *Victim = ClassStack.top();
3891 ClassStack.pop();
3892 if (Victim->TopLevelClass) {
3893 // Deallocate all of the nested classes of this class,
3894 // recursively: we don't need to keep any of this information.
3895 DeallocateParsedClasses(Victim);
3896 return;
3897 }
3898 assert(!ClassStack.empty() && "Missing top-level class?");
3899
3900 if (Victim->LateParsedDeclarations.empty()) {
3901 // The victim is a nested class, but we will not need to perform
3902 // any processing after the definition of this class since it has
3903 // no members whose handling was delayed. Therefore, we can just
3904 // remove this nested class.
3905 DeallocateParsedClasses(Victim);
3906 return;
3907 }
3908
3909 // This nested class has some members that will need to be processed
3910 // after the top-level class is completely defined. Therefore, add
3911 // it to the list of nested classes within its parent.
3912 assert(getCurScope()->isClassScope() && "Nested class outside of class scope?");
3913 ClassStack.top()->LateParsedDeclarations.push_back(new LateParsedClass(this, Victim));
3914 Victim->TemplateScope = getCurScope()->getParent()->isTemplateParamScope();
3915 }
3916
3917 /// Try to parse an 'identifier' which appears within an attribute-token.
3918 ///
3919 /// \return the parsed identifier on success, and 0 if the next token is not an
3920 /// attribute-token.
3921 ///
3922 /// C++11 [dcl.attr.grammar]p3:
3923 /// If a keyword or an alternative token that satisfies the syntactic
3924 /// requirements of an identifier is contained in an attribute-token,
3925 /// it is considered an identifier.
3926 IdentifierInfo *Parser::TryParseCXX11AttributeIdentifier(SourceLocation &Loc) {
3927 switch (Tok.getKind()) {
3928 default:
3929 // Identifiers and keywords have identifier info attached.
3930 if (!Tok.isAnnotation()) {
3931 if (IdentifierInfo *II = Tok.getIdentifierInfo()) {
3932 Loc = ConsumeToken();
3933 return II;
3934 }
3935 }
3936 return nullptr;
3937
3938 case tok::numeric_constant: {
3939 // If we got a numeric constant, check to see if it comes from a macro that
3940 // corresponds to the predefined __clang__ macro. If it does, warn the user
3941 // and recover by pretending they said _Clang instead.
3942 if (Tok.getLocation().isMacroID()) {
3943 SmallString<8> ExpansionBuf;
3944 SourceLocation ExpansionLoc =
3945 PP.getSourceManager().getExpansionLoc(Tok.getLocation());
3946 StringRef Spelling = PP.getSpelling(ExpansionLoc, ExpansionBuf);
3947 if (Spelling == "__clang__") {
3948 SourceRange TokRange(
3949 ExpansionLoc,
3950 PP.getSourceManager().getExpansionLoc(Tok.getEndLoc()));
3951 Diag(Tok, diag::warn_wrong_clang_attr_namespace)
3952 << FixItHint::CreateReplacement(TokRange, "_Clang");
3953 Loc = ConsumeToken();
3954 return &PP.getIdentifierTable().get("_Clang");
3955 }
3956 }
3957 return nullptr;
3958 }
3959
3960 case tok::ampamp: // 'and'
3961 case tok::pipe: // 'bitor'
3962 case tok::pipepipe: // 'or'
3963 case tok::caret: // 'xor'
3964 case tok::tilde: // 'compl'
3965 case tok::amp: // 'bitand'
3966 case tok::ampequal: // 'and_eq'
3967 case tok::pipeequal: // 'or_eq'
3968 case tok::caretequal: // 'xor_eq'
3969 case tok::exclaim: // 'not'
3970 case tok::exclaimequal: // 'not_eq'
3971 // Alternative tokens do not have identifier info, but their spelling
3972 // starts with an alphabetical character.
3973 SmallString<8> SpellingBuf;
3974 SourceLocation SpellingLoc =
3975 PP.getSourceManager().getSpellingLoc(Tok.getLocation());
3976 StringRef Spelling = PP.getSpelling(SpellingLoc, SpellingBuf);
3977 if (isLetter(Spelling[0])) {
3978 Loc = ConsumeToken();
3979 return &PP.getIdentifierTable().get(Spelling);
3980 }
3981 return nullptr;
3982 }
3983 }
3984
3985 static bool IsBuiltInOrStandardCXX11Attribute(IdentifierInfo *AttrName,
3986 IdentifierInfo *ScopeName) {
3987 switch (
3988 ParsedAttr::getParsedKind(AttrName, ScopeName, ParsedAttr::AS_CXX11)) {
3989 case ParsedAttr::AT_CarriesDependency:
3990 case ParsedAttr::AT_Deprecated:
3991 case ParsedAttr::AT_FallThrough:
3992 case ParsedAttr::AT_CXX11NoReturn:
3993 case ParsedAttr::AT_NoUniqueAddress:
3994 return true;
3995 case ParsedAttr::AT_WarnUnusedResult:
3996 return !ScopeName && AttrName->getName().equals("nodiscard");
3997 case ParsedAttr::AT_Unused:
3998 return !ScopeName && AttrName->getName().equals("maybe_unused");
3999 default:
4000 return false;
4001 }
4002 }
4003
4004 /// ParseCXX11AttributeArgs -- Parse a C++11 attribute-argument-clause.
4005 ///
4006 /// [C++11] attribute-argument-clause:
4007 /// '(' balanced-token-seq ')'
4008 ///
4009 /// [C++11] balanced-token-seq:
4010 /// balanced-token
4011 /// balanced-token-seq balanced-token
4012 ///
4013 /// [C++11] balanced-token:
4014 /// '(' balanced-token-seq ')'
4015 /// '[' balanced-token-seq ']'
4016 /// '{' balanced-token-seq '}'
4017 /// any token but '(', ')', '[', ']', '{', or '}'
4018 bool Parser::ParseCXX11AttributeArgs(IdentifierInfo *AttrName,
4019 SourceLocation AttrNameLoc,
4020 ParsedAttributes &Attrs,
4021 SourceLocation *EndLoc,
4022 IdentifierInfo *ScopeName,
4023 SourceLocation ScopeLoc) {
4024 assert(Tok.is(tok::l_paren) && "Not a C++11 attribute argument list");
4025 SourceLocation LParenLoc = Tok.getLocation();
4026 const LangOptions &LO = getLangOpts();
4027 ParsedAttr::Syntax Syntax =
4028 LO.CPlusPlus ? ParsedAttr::AS_CXX11 : ParsedAttr::AS_C2x;
4029
4030 // If the attribute isn't known, we will not attempt to parse any
4031 // arguments.
4032 if (!hasAttribute(LO.CPlusPlus ? AttrSyntax::CXX : AttrSyntax::C, ScopeName,
4033 AttrName, getTargetInfo(), getLangOpts())) {
4034 // Eat the left paren, then skip to the ending right paren.
4035 ConsumeParen();
4036 SkipUntil(tok::r_paren);
4037 return false;
4038 }
4039
4040 if (ScopeName && (ScopeName->isStr("gnu") || ScopeName->isStr("__gnu__"))) {
4041 // GNU-scoped attributes have some special cases to handle GNU-specific
4042 // behaviors.
4043 ParseGNUAttributeArgs(AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
4044 ScopeLoc, Syntax, nullptr);
4045 return true;
4046 }
4047
4048 unsigned NumArgs;
4049 // Some Clang-scoped attributes have some special parsing behavior.
4050 if (ScopeName && (ScopeName->isStr("clang") || ScopeName->isStr("_Clang")))
4051 NumArgs = ParseClangAttributeArgs(AttrName, AttrNameLoc, Attrs, EndLoc,
4052 ScopeName, ScopeLoc, Syntax);
4053 else
4054 NumArgs =
4055 ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, EndLoc,
4056 ScopeName, ScopeLoc, Syntax);
4057
4058 if (!Attrs.empty() &&
4059 IsBuiltInOrStandardCXX11Attribute(AttrName, ScopeName)) {
4060 ParsedAttr &Attr = Attrs.back();
4061 // If the attribute is a standard or built-in attribute and we are
4062 // parsing an argument list, we need to determine whether this attribute
4063 // was allowed to have an argument list (such as [[deprecated]]), and how
4064 // many arguments were parsed (so we can diagnose on [[deprecated()]]).
4065 if (Attr.getMaxArgs() && !NumArgs) {
4066 // The attribute was allowed to have arguments, but none were provided
4067 // even though the attribute parsed successfully. This is an error.
4068 Diag(LParenLoc, diag::err_attribute_requires_arguments) << AttrName;
4069 Attr.setInvalid(true);
4070 } else if (!Attr.getMaxArgs()) {
4071 // The attribute parsed successfully, but was not allowed to have any
4072 // arguments. It doesn't matter whether any were provided -- the
4073 // presence of the argument list (even if empty) is diagnosed.
4074 Diag(LParenLoc, diag::err_cxx11_attribute_forbids_arguments)
4075 << AttrName
4076 << FixItHint::CreateRemoval(SourceRange(LParenLoc, *EndLoc));
4077 Attr.setInvalid(true);
4078 }
4079 }
4080 return true;
4081 }
4082
4083 /// ParseCXX11AttributeSpecifier - Parse a C++11 or C2x attribute-specifier.
4084 ///
4085 /// [C++11] attribute-specifier:
4086 /// '[' '[' attribute-list ']' ']'
4087 /// alignment-specifier
4088 ///
4089 /// [C++11] attribute-list:
4090 /// attribute[opt]
4091 /// attribute-list ',' attribute[opt]
4092 /// attribute '...'
4093 /// attribute-list ',' attribute '...'
4094 ///
4095 /// [C++11] attribute:
4096 /// attribute-token attribute-argument-clause[opt]
4097 ///
4098 /// [C++11] attribute-token:
4099 /// identifier
4100 /// attribute-scoped-token
4101 ///
4102 /// [C++11] attribute-scoped-token:
4103 /// attribute-namespace '::' identifier
4104 ///
4105 /// [C++11] attribute-namespace:
4106 /// identifier
4107 void Parser::ParseCXX11AttributeSpecifier(ParsedAttributes &attrs,
4108 SourceLocation *endLoc) {
4109 if (Tok.is(tok::kw_alignas)) {
4110 Diag(Tok.getLocation(), diag::warn_cxx98_compat_alignas);
4111 ParseAlignmentSpecifier(attrs, endLoc);
4112 return;
4113 }
4114
4115 assert(Tok.is(tok::l_square) && NextToken().is(tok::l_square) &&
4116 "Not a double square bracket attribute list");
4117
4118 Diag(Tok.getLocation(), diag::warn_cxx98_compat_attribute);
4119
4120 ConsumeBracket();
4121 ConsumeBracket();
4122
4123 SourceLocation CommonScopeLoc;
4124 IdentifierInfo *CommonScopeName = nullptr;
4125 if (Tok.is(tok::kw_using)) {
4126 Diag(Tok.getLocation(), getLangOpts().CPlusPlus17
4127 ? diag::warn_cxx14_compat_using_attribute_ns
4128 : diag::ext_using_attribute_ns);
4129 ConsumeToken();
4130
4131 CommonScopeName = TryParseCXX11AttributeIdentifier(CommonScopeLoc);
4132 if (!CommonScopeName) {
4133 Diag(Tok.getLocation(), diag::err_expected) << tok::identifier;
4134 SkipUntil(tok::r_square, tok::colon, StopBeforeMatch);
4135 }
4136 if (!TryConsumeToken(tok::colon) && CommonScopeName)
4137 Diag(Tok.getLocation(), diag::err_expected) << tok::colon;
4138 }
4139
4140 llvm::SmallDenseMap<IdentifierInfo*, SourceLocation, 4> SeenAttrs;
4141
4142 while (Tok.isNot(tok::r_square)) {
4143 // attribute not present
4144 if (TryConsumeToken(tok::comma))
4145 continue;
4146
4147 SourceLocation ScopeLoc, AttrLoc;
4148 IdentifierInfo *ScopeName = nullptr, *AttrName = nullptr;
4149
4150 AttrName = TryParseCXX11AttributeIdentifier(AttrLoc);
4151 if (!AttrName)
4152 // Break out to the "expected ']'" diagnostic.
4153 break;
4154
4155 // scoped attribute
4156 if (TryConsumeToken(tok::coloncolon)) {
4157 ScopeName = AttrName;
4158 ScopeLoc = AttrLoc;
4159
4160 AttrName = TryParseCXX11AttributeIdentifier(AttrLoc);
4161 if (!AttrName) {
4162 Diag(Tok.getLocation(), diag::err_expected) << tok::identifier;
4163 SkipUntil(tok::r_square, tok::comma, StopAtSemi | StopBeforeMatch);
4164 continue;
4165 }
4166 }
4167
4168 if (CommonScopeName) {
4169 if (ScopeName) {
4170 Diag(ScopeLoc, diag::err_using_attribute_ns_conflict)
4171 << SourceRange(CommonScopeLoc);
4172 } else {
4173 ScopeName = CommonScopeName;
4174 ScopeLoc = CommonScopeLoc;
4175 }
4176 }
4177
4178 bool StandardAttr = IsBuiltInOrStandardCXX11Attribute(AttrName, ScopeName);
4179 bool AttrParsed = false;
4180
4181 if (StandardAttr &&
4182 !SeenAttrs.insert(std::make_pair(AttrName, AttrLoc)).second)
4183 Diag(AttrLoc, diag::err_cxx11_attribute_repeated)
4184 << AttrName << SourceRange(SeenAttrs[AttrName]);
4185
4186 // Parse attribute arguments
4187 if (Tok.is(tok::l_paren))
4188 AttrParsed = ParseCXX11AttributeArgs(AttrName, AttrLoc, attrs, endLoc,
4189 ScopeName, ScopeLoc);
4190
4191 if (!AttrParsed)
4192 attrs.addNew(
4193 AttrName,
4194 SourceRange(ScopeLoc.isValid() ? ScopeLoc : AttrLoc, AttrLoc),
4195 ScopeName, ScopeLoc, nullptr, 0,
4196 getLangOpts().CPlusPlus ? ParsedAttr::AS_CXX11 : ParsedAttr::AS_C2x);
4197
4198 if (TryConsumeToken(tok::ellipsis))
4199 Diag(Tok, diag::err_cxx11_attribute_forbids_ellipsis)
4200 << AttrName;
4201 }
4202
4203 if (ExpectAndConsume(tok::r_square))
4204 SkipUntil(tok::r_square);
4205 if (endLoc)
4206 *endLoc = Tok.getLocation();
4207 if (ExpectAndConsume(tok::r_square))
4208 SkipUntil(tok::r_square);
4209 }
4210
4211 /// ParseCXX11Attributes - Parse a C++11 or C2x attribute-specifier-seq.
4212 ///
4213 /// attribute-specifier-seq:
4214 /// attribute-specifier-seq[opt] attribute-specifier
4215 void Parser::ParseCXX11Attributes(ParsedAttributesWithRange &attrs,
4216 SourceLocation *endLoc) {
4217 assert(standardAttributesAllowed());
4218
4219 SourceLocation StartLoc = Tok.getLocation(), Loc;
4220 if (!endLoc)
4221 endLoc = &Loc;
4222
4223 do {
4224 ParseCXX11AttributeSpecifier(attrs, endLoc);
4225 } while (isCXX11AttributeSpecifier());
4226
4227 attrs.Range = SourceRange(StartLoc, *endLoc);
4228 }
4229
4230 void Parser::DiagnoseAndSkipCXX11Attributes() {
4231 // Start and end location of an attribute or an attribute list.
4232 SourceLocation StartLoc = Tok.getLocation();
4233 SourceLocation EndLoc = SkipCXX11Attributes();
4234
4235 if (EndLoc.isValid()) {
4236 SourceRange Range(StartLoc, EndLoc);
4237 Diag(StartLoc, diag::err_attributes_not_allowed)
4238 << Range;
4239 }
4240 }
4241
4242 SourceLocation Parser::SkipCXX11Attributes() {
4243 SourceLocation EndLoc;
4244
4245 if (!isCXX11AttributeSpecifier())
4246 return EndLoc;
4247
4248 do {
4249 if (Tok.is(tok::l_square)) {
4250 BalancedDelimiterTracker T(*this, tok::l_square);
4251 T.consumeOpen();
4252 T.skipToEnd();
4253 EndLoc = T.getCloseLocation();
4254 } else {
4255 assert(Tok.is(tok::kw_alignas) && "not an attribute specifier");
4256 ConsumeToken();
4257 BalancedDelimiterTracker T(*this, tok::l_paren);
4258 if (!T.consumeOpen())
4259 T.skipToEnd();
4260 EndLoc = T.getCloseLocation();
4261 }
4262 } while (isCXX11AttributeSpecifier());
4263
4264 return EndLoc;
4265 }
4266
4267 /// Parse uuid() attribute when it appears in a [] Microsoft attribute.
4268 void Parser::ParseMicrosoftUuidAttributeArgs(ParsedAttributes &Attrs) {
4269 assert(Tok.is(tok::identifier) && "Not a Microsoft attribute list");
4270 IdentifierInfo *UuidIdent = Tok.getIdentifierInfo();
4271 assert(UuidIdent->getName() == "uuid" && "Not a Microsoft attribute list");
4272
4273 SourceLocation UuidLoc = Tok.getLocation();
4274 ConsumeToken();
4275
4276 // Ignore the left paren location for now.
4277 BalancedDelimiterTracker T(*this, tok::l_paren);
4278 if (T.consumeOpen()) {
4279 Diag(Tok, diag::err_expected) << tok::l_paren;
4280 return;
4281 }
4282
4283 ArgsVector ArgExprs;
4284 if (Tok.is(tok::string_literal)) {
4285 // Easy case: uuid("...") -- quoted string.
4286 ExprResult StringResult = ParseStringLiteralExpression();
4287 if (StringResult.isInvalid())
4288 return;
4289 ArgExprs.push_back(StringResult.get());
4290 } else {
4291 // something like uuid({000000A0-0000-0000-C000-000000000049}) -- no
4292 // quotes in the parens. Just append the spelling of all tokens encountered
4293 // until the closing paren.
4294
4295 SmallString<42> StrBuffer; // 2 "", 36 bytes UUID, 2 optional {}, 1 nul
4296 StrBuffer += "\"";
4297
4298 // Since none of C++'s keywords match [a-f]+, accepting just tok::l_brace,
4299 // tok::r_brace, tok::minus, tok::identifier (think C000) and
4300 // tok::numeric_constant (0000) should be enough. But the spelling of the
4301 // uuid argument is checked later anyways, so there's no harm in accepting
4302 // almost anything here.
4303 // cl is very strict about whitespace in this form and errors out if any
4304 // is present, so check the space flags on the tokens.
4305 SourceLocation StartLoc = Tok.getLocation();
4306 while (Tok.isNot(tok::r_paren)) {
4307 if (Tok.hasLeadingSpace() || Tok.isAtStartOfLine()) {
4308 Diag(Tok, diag::err_attribute_uuid_malformed_guid);
4309 SkipUntil(tok::r_paren, StopAtSemi);
4310 return;
4311 }
4312 SmallString<16> SpellingBuffer;
4313 SpellingBuffer.resize(Tok.getLength() + 1);
4314 bool Invalid = false;
4315 StringRef TokSpelling = PP.getSpelling(Tok, SpellingBuffer, &Invalid);
4316 if (Invalid) {
4317 SkipUntil(tok::r_paren, StopAtSemi);
4318 return;
4319 }
4320 StrBuffer += TokSpelling;
4321 ConsumeAnyToken();
4322 }
4323 StrBuffer += "\"";
4324
4325 if (Tok.hasLeadingSpace() || Tok.isAtStartOfLine()) {
4326 Diag(Tok, diag::err_attribute_uuid_malformed_guid);
4327 ConsumeParen();
4328 return;
4329 }
4330
4331 // Pretend the user wrote the appropriate string literal here.
4332 // ActOnStringLiteral() copies the string data into the literal, so it's
4333 // ok that the Token points to StrBuffer.
4334 Token Toks[1];
4335 Toks[0].startToken();
4336 Toks[0].setKind(tok::string_literal);
4337 Toks[0].setLocation(StartLoc);
4338 Toks[0].setLiteralData(StrBuffer.data());
4339 Toks[0].setLength(StrBuffer.size());
4340 StringLiteral *UuidString =
4341 cast<StringLiteral>(Actions.ActOnStringLiteral(Toks, nullptr).get());
4342 ArgExprs.push_back(UuidString);
4343 }
4344
4345 if (!T.consumeClose()) {
4346 Attrs.addNew(UuidIdent, SourceRange(UuidLoc, T.getCloseLocation()), nullptr,
4347 SourceLocation(), ArgExprs.data(), ArgExprs.size(),
4348 ParsedAttr::AS_Microsoft);
4349 }
4350 }
4351
4352 /// ParseMicrosoftAttributes - Parse Microsoft attributes [Attr]
4353 ///
4354 /// [MS] ms-attribute:
4355 /// '[' token-seq ']'
4356 ///
4357 /// [MS] ms-attribute-seq:
4358 /// ms-attribute[opt]
4359 /// ms-attribute ms-attribute-seq
4360 void Parser::ParseMicrosoftAttributes(ParsedAttributes &attrs,
4361 SourceLocation *endLoc) {
4362 assert(Tok.is(tok::l_square) && "Not a Microsoft attribute list");
4363
4364 do {
4365 // FIXME: If this is actually a C++11 attribute, parse it as one.
4366 BalancedDelimiterTracker T(*this, tok::l_square);
4367 T.consumeOpen();
4368
4369 // Skip most ms attributes except for a whitelist.
4370 while (true) {
4371 SkipUntil(tok::r_square, tok::identifier, StopAtSemi | StopBeforeMatch);
4372 if (Tok.isNot(tok::identifier)) // ']', but also eof
4373 break;
4374 if (Tok.getIdentifierInfo()->getName() == "uuid")
4375 ParseMicrosoftUuidAttributeArgs(attrs);
4376 else
4377 ConsumeToken();
4378 }
4379
4380 T.consumeClose();
4381 if (endLoc)
4382 *endLoc = T.getCloseLocation();
4383 } while (Tok.is(tok::l_square));
4384 }
4385
4386 void Parser::ParseMicrosoftIfExistsClassDeclaration(
4387 DeclSpec::TST TagType, ParsedAttributes &AccessAttrs,
4388 AccessSpecifier &CurAS) {
4389 IfExistsCondition Result;
4390 if (ParseMicrosoftIfExistsCondition(Result))
4391 return;
4392
4393 BalancedDelimiterTracker Braces(*this, tok::l_brace);
4394 if (Braces.consumeOpen()) {
4395 Diag(Tok, diag::err_expected) << tok::l_brace;
4396 return;
4397 }
4398
4399 switch (Result.Behavior) {
4400 case IEB_Parse:
4401 // Parse the declarations below.
4402 break;
4403
4404 case IEB_Dependent:
4405 Diag(Result.KeywordLoc, diag::warn_microsoft_dependent_exists)
4406 << Result.IsIfExists;
4407 // Fall through to skip.
4408 LLVM_FALLTHROUGH;
4409
4410 case IEB_Skip:
4411 Braces.skipToEnd();
4412 return;
4413 }
4414
4415 while (Tok.isNot(tok::r_brace) && !isEofOrEom()) {
4416 // __if_exists, __if_not_exists can nest.
4417 if (Tok.isOneOf(tok::kw___if_exists, tok::kw___if_not_exists)) {
4418 ParseMicrosoftIfExistsClassDeclaration(TagType,
4419 AccessAttrs, CurAS);
4420 continue;
4421 }
4422
4423 // Check for extraneous top-level semicolon.
4424 if (Tok.is(tok::semi)) {
4425 ConsumeExtraSemi(InsideStruct, TagType);
4426 continue;
4427 }
4428
4429 AccessSpecifier AS = getAccessSpecifierIfPresent();
4430 if (AS != AS_none) {
4431 // Current token is a C++ access specifier.
4432 CurAS = AS;
4433 SourceLocation ASLoc = Tok.getLocation();
4434 ConsumeToken();
4435 if (Tok.is(tok::colon))
4436 Actions.ActOnAccessSpecifier(AS, ASLoc, Tok.getLocation(),
4437 ParsedAttributesView{});
4438 else
4439 Diag(Tok, diag::err_expected) << tok::colon;
4440 ConsumeToken();
4441 continue;
4442 }
4443
4444 // Parse all the comma separated declarators.
4445 ParseCXXClassMemberDeclaration(CurAS, AccessAttrs);
4446 }
4447
4448 Braces.consumeClose();
4449 }
clang::TST_decltype
Definition: Specifiers.h:89
clang::VirtSpecifiers::VS_GNU_Final
Definition: DeclSpec.h:2594
ParsedTemplate.h
ASTContext.h
Defines the clang::ASTContext interface.
clang::Sema::SkipBodyInfo::CheckSameAsPrevious
bool CheckSameAsPrevious
Definition: Sema.h:1875
clang::Declarator::getFunctionTypeInfo
DeclaratorChunk::FunctionTypeInfo & getFunctionTypeInfo()
getFunctionTypeInfo - Retrieves the function type info object (looking through parentheses).
Definition: DeclSpec.h:2313
clang::SourceLocation::getLocWithOffset
SourceLocation getLocWithOffset(int Offset) const
Return a source location with the specified offset from this SourceLocation.
Definition: SourceLocation.h:132
clang::EST_None
no exception specification
Definition: ExceptionSpecificationType.h:21
clang::Parser::ParseExpression
ExprResult ParseExpression(TypeCastState isTypeCast=NotTypeCast)
Simple precedence-based parser for binary/ternary operators.
Definition: ParseExpr.cpp:123
clang::SourceLocation::getRawEncoding
unsigned getRawEncoding() const
When a SourceLocation itself cannot be used, this returns an (opaque) 32-bit integer encoding for it...
Definition: SourceLocation.h:144
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:654
clang::Scope::FunctionPrototypeScope
This is a scope that corresponds to the parameters within a function prototype.
Definition: Scope.h:81
clang::Declarator::clear
void clear()
Reset the contents of this Declarator.
Definition: DeclSpec.h:1958
clang::VirtSpecifiers::Specifier
Specifier
Definition: DeclSpec.h:2588
clang::Sema::ActOnFinishNamespaceDef
void ActOnFinishNamespaceDef(Decl *Dcl, SourceLocation RBrace)
ActOnFinishNamespaceDef - This callback is called after a namespace is exited.
Definition: SemaDeclCXX.cpp:10614
clang::EST_Unparsed
not parsed yet
Definition: ExceptionSpecificationType.h:32
clang::TemplateIdAnnotation::Name
IdentifierInfo * Name
FIXME: Temporarily stores the name of a specialization.
Definition: ParsedTemplate.h:163
Parser.h
clang::TemplateIdAnnotation::TemplateNameLoc
SourceLocation TemplateNameLoc
TemplateNameLoc - The location of the template name within the source.
Definition: ParsedTemplate.h:160
clang::FDK_Declaration
Definition: DeclSpec.h:1743
clang::Sema::TagUseKind
TagUseKind
Definition: Sema.h:2537
clang::FDK_Defaulted
Definition: DeclSpec.h:1745
clang::Expr::hasPlaceholderType
bool hasPlaceholderType() const
Returns whether this expression has a placeholder type.
Definition: Expr.h:481
clang::Token::is
bool is(tok::TokenKind K) const
is/isNot - Predicates to check if this token is a specific kind, as in "if (Tok.is(tok::l_brace)) {...
Definition: Token.h:97
clang::CharSourceRange::getTokenRange
static CharSourceRange getTokenRange(SourceRange R)
Definition: SourceLocation.h:258
clang::TNK_Dependent_template_name
The name refers to a dependent template name:
Definition: TemplateKinds.h:46
clang::BalancedDelimiterTracker::consumeClose
bool consumeClose()
Definition: RAIIObjectsForParser.h:446
clang::Sema::ActOnUsingDirective
Decl * ActOnUsingDirective(Scope *CurScope, SourceLocation UsingLoc, SourceLocation NamespcLoc, CXXScopeSpec &SS, SourceLocation IdentLoc, IdentifierInfo *NamespcName, const ParsedAttributesView &AttrList)
Definition: SemaDeclCXX.cpp:10993
clang::Decl
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:88
clang::DeclaratorContext::MemberContext
clang::AttributeCommonInfo::Syntax
Syntax
The style used to specify an attribute.
Definition: AttributeCommonInfo.h:25
clang::ParsingDeclRAIIObject
RAII object used to inform the actions that we&#39;re currently parsing a declaration.
Definition: RAIIObjectsForParser.h:90
clang::Sema::CodeCompleteUsing
void CodeCompleteUsing(Scope *S)
Definition: SemaCodeComplete.cpp:5438
clang::SuppressAccessChecks
A RAII object used to temporarily suppress access-like checking.
Definition: RAIIObjectsForParser.h:44
DeclTemplate.h
Defines the C++ template declaration subclasses.
P
StringRef P
Definition: ASTMatchersInternal.cpp:485
clang::Scope::isTemplateParamScope
bool isTemplateParamScope() const
isTemplateParamScope - Return true if this scope is a C++ template parameter scope.
Definition: Scope.h:378
clang::index::SymbolKind::TypeAlias
clang::Type
The base class of the type hierarchy.
Definition: Type.h:1450
clang::Parser::TryAnnotateCXXScopeToken
bool TryAnnotateCXXScopeToken(bool EnteringContext=false)
TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only annotates C++ scope specifiers and ...
Definition: Parser.cpp:2029
clang::BalancedDelimiterTracker::getCloseLocation
SourceLocation getCloseLocation() const
Definition: RAIIObjectsForParser.h:428
clang::Scope::FnScope
This indicates that the scope corresponds to a function, which means that labels are set here...
Definition: Scope.h:47
clang::VarTemplateDecl
Declaration of a variable template.
Definition: DeclTemplate.h:3070
clang::Declarator::isFunctionDeclarator
bool isFunctionDeclarator(unsigned &idx) const
isFunctionDeclarator - This method returns true if the declarator is a function declarator (looking t...
Definition: DeclSpec.h:2282
clang::FixItHint::CreateInsertionFromRange
static FixItHint CreateInsertionFromRange(SourceLocation InsertionLoc, CharSourceRange FromRange, bool BeforePreviousInsertions=false)
Create a code modification hint that inserts the given code from FromRange at a specific location...
Definition: Diagnostic.h:105
clang::DeclSpec::getSpecifierName
static const char * getSpecifierName(DeclSpec::TST T, const PrintingPolicy &Policy)
Turn a type-specifier-type into a string like "_Bool" or "union".
Definition: DeclSpec.cpp:520
clang::DeclaratorChunk::ParamInfo::DefaultArgTokens
std::unique_ptr< CachedTokens > DefaultArgTokens
DefaultArgTokens - When the parameter&#39;s default argument cannot be parsed immediately (because it occ...
Definition: DeclSpec.h:1260
clang::AttributeCommonInfo::AS_Microsoft
[uuid("...")] class Foo
Definition: AttributeCommonInfo.h:39
clang::VirtSpecifiers::getSpecifierName
static const char * getSpecifierName(Specifier VS)
Definition: DeclSpec.cpp:1417
clang::AccessSpecifier
AccessSpecifier
A C++ access specifier (public, private, protected), plus the special value "none" which means differ...
Definition: Specifiers.h:113
clang::TemplateIdAnnotation::Kind
TemplateNameKind Kind
The kind of template that Template refers to.
Definition: ParsedTemplate.h:173
Specifier
const NestedNameSpecifier * Specifier
Definition: USRLocFinder.cpp:172
clang::OpaquePtr
Wrapper for void* pointer.
Definition: Ownership.h:50
clang::Parser
Parser - This implements a parser for the C family of languages.
Definition: Parser.h:57
clang::XRayInstrKind::Function
constexpr XRayInstrMask Function
Definition: XRayInstr.h:38
clang::Declarator::SetIdentifier
void SetIdentifier(IdentifierInfo *Id, SourceLocation IdLoc)
Set the name of this declarator to be the given identifier.
Definition: DeclSpec.h:2181
clang::Declarator::getAttributes
const ParsedAttributes & getAttributes() const
Definition: DeclSpec.h:2496
clang::EnterExpressionEvaluationContext
RAII object that enters a new expression evaluation context.
Definition: Sema.h:12029
clang::DeclSpec::TST_underlyingType
static const TST TST_underlyingType
Definition: DeclSpec.h:302
clang::Declarator
Information about one declarator, including the parsed type information and the identifier.
Definition: DeclSpec.h:1792
clang::DeclSpec::setTypeofParensRange
void setTypeofParensRange(SourceRange range)
Definition: DeclSpec.h:527
clang::EST_Dynamic
throw(T1, T2)
Definition: ExceptionSpecificationType.h:23
clang::TypeSpecifierType
TypeSpecifierType
Specifies the kind of type.
Definition: Specifiers.h:60
clang::DeclSpec::TST_interface
static const TST TST_interface
Definition: DeclSpec.h:295
clang::Decl::isInvalidDecl
bool isInvalidDecl() const
Definition: DeclBase.h:553
clang::frontend::After
Like System, but searched after the system directories.
Definition: HeaderSearchOptions.h:60
clang::SourceRange::setBegin
void setBegin(SourceLocation b)
Definition: SourceLocation.h:219
clang::PrintingPolicy
Describes how types, statements, expressions, and declarations should be printed. ...
Definition: PrettyPrinter.h:47
clang::ParenBraceBracketBalancer
RAII object that makes sure paren/bracket/brace count is correct after declaration/statement parsing...
Definition: RAIIObjectsForParser.h:343
clang::Sema::getTypeName
ParsedType getTypeName(const IdentifierInfo &II, SourceLocation NameLoc, Scope *S, CXXScopeSpec *SS=nullptr, bool isClassName=false, bool HasTrailingDot=false, ParsedType ObjectType=nullptr, bool IsCtorOrDtorName=false, bool WantNontrivialTypeSourceInfo=false, bool IsClassTemplateDeductionContext=true, IdentifierInfo **CorrectedII=nullptr)
If the identifier refers to a type name within this scope, return the declaration of that type...
Definition: SemaDecl.cpp:282
clang::CPlusPlus11
Definition: LangStandard.h:48
clang::Token::isAnnotation
bool isAnnotation() const
Return true if this is any of tok::annot_* kind tokens.
Definition: Token.h:120
clang::Parser::ObjCDeclContextSwitch
friend class ObjCDeclContextSwitch
Definition: Parser.h:62
clang::ColonProtectionRAIIObject
ColonProtectionRAIIObject - This sets the Parser::ColonIsSacred bool and restores it when destroyed...
Definition: RAIIObjectsForParser.h:270
clang::ActionResult::isUnset
bool isUnset() const
Definition: Ownership.h:168
clang::Token::getKind
tok::TokenKind getKind() const
Definition: Token.h:92
clang::Parser::SkipUntil
bool SkipUntil(tok::TokenKind T, SkipUntilFlags Flags=static_cast< SkipUntilFlags >(0))
SkipUntil - Read tokens until we get to the specified token, then consume it (unless StopBeforeMatch ...
Definition: Parser.h:1118
ParseDiagnostic.h
clang::Declarator::setTrailingRequiresClause
void setTrailingRequiresClause(Expr *TRC)
Sets a trailing requires clause for this declarator.
Definition: DeclSpec.h:2441
clang::TemplateIdAnnotation
Information about a template-id annotation token.
Definition: ParsedTemplate.h:150
clang::VirtSpecifiers::isUnset
bool isUnset() const
Definition: DeclSpec.h:2602
clang::DeclSpec::getFriendSpecLoc
SourceLocation getFriendSpecLoc() const
Definition: DeclSpec.h:741
clang::TST_typename
Definition: Specifiers.h:86
clang::RecordDecl
Represents a struct/union/class.
Definition: Decl.h:3748
clang::Parser::NextToken
const Token & NextToken()
NextToken - This peeks ahead one token and returns it without consuming it.
Definition: Parser.h:759
clang::Parser::TryConsumeToken
bool TryConsumeToken(tok::TokenKind Expected)
Definition: Parser.h:460
clang::DeclaratorContext::TrailingReturnContext
clang::DeclSpec::SCS_static
Definition: DeclSpec.h:236
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:57
clang::Sema::ActOnStartNamespaceDef
Decl * ActOnStartNamespaceDef(Scope *S, SourceLocation InlineLoc, SourceLocation NamespaceLoc, SourceLocation IdentLoc, IdentifierInfo *Ident, SourceLocation LBrace, const ParsedAttributesView &AttrList, UsingDirectiveDecl *&UsingDecl)
ActOnStartNamespaceDef - This is called at the start of a namespace definition.
Definition: SemaDeclCXX.cpp:10461
clang::Sema::ActOnNamespaceAliasDef
Decl * ActOnNamespaceAliasDef(Scope *CurScope, SourceLocation NamespaceLoc, SourceLocation AliasLoc, IdentifierInfo *Alias, CXXScopeSpec &SS, SourceLocation IdentLoc, IdentifierInfo *Ident)
Definition: SemaDeclCXX.cpp:12279
clang::Token::getAnnotationEndLoc
SourceLocation getAnnotationEndLoc() const
Definition: Token.h:140
clang::BalancedDelimiterTracker::consumeOpen
bool consumeOpen()
Definition: RAIIObjectsForParser.h:431
clang::IdentifierInfo::isStr
bool isStr(const char(&Str)[StrLen]) const
Return true if this is the identifier for the specified string.
Definition: IdentifierTable.h:136
clang::ICIS_CopyInit
Copy initialization.
Definition: Specifiers.h:260
clang::TNK_Undeclared_template
Lookup for the name failed, but we&#39;re assuming it was a template name anyway.
Definition: TemplateKinds.h:50
llvm::Optional
Definition: LLVM.h:37
clang::isLetter
LLVM_READONLY bool isLetter(unsigned char c)
Return true if this character is an ASCII letter: [a-zA-Z].
Definition: CharInfo.h:111
clang::DeclSpec::TST_class
static const TST TST_class
Definition: DeclSpec.h:296
clang::FDK_Definition
Definition: DeclSpec.h:1744
clang::Sema::ExpressionEvaluationContext::PotentiallyEvaluated
The current expression is potentially evaluated at run time, which means that code may be generated t...
clang::Sema::ConvertDeclToDeclGroup
DeclGroupPtrTy ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType=nullptr)
Definition: SemaDecl.cpp:55
clang::interp::Zero
bool Zero(InterpState &S, CodePtr OpPC)
Definition: Interp.h:812
clang::DeclSpec::TST_error
static const TST TST_error
Definition: DeclSpec.h:310
clang::Token
Token - This structure provides full information about a lexed token.
Definition: Token.h:34
clang::Token::setKind
void setKind(tok::TokenKind K)
Definition: Token.h:93
clang::BalancedDelimiterTracker
RAII class that helps handle the parsing of an open/close delimiter pair, such as braces { ...
Definition: RAIIObjectsForParser.h:385
clang::Sema::DiagnoseUnknownTemplateName
bool DiagnoseUnknownTemplateName(const IdentifierInfo &II, SourceLocation IILoc, Scope *S, const CXXScopeSpec *SS, TemplateTy &SuggestedTemplate, TemplateNameKind &SuggestedKind)
Definition: SemaTemplate.cpp:301
clang::DeclSpec::hasTagDefinition
bool hasTagDefinition() const
Definition: DeclSpec.cpp:427
clang::DeclSpec::ClearStorageClassSpecs
void ClearStorageClassSpecs()
Definition: DeclSpec.h:461
clang::LangOptions
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:53
clang::CodeGen::state
i32 captured_struct **param SharedsTy A type which contains references the shared variables *param Shareds Context with the list of shared variables from the p *TaskFunction *param Data Additional data for task generation like final * state
Definition: CGOpenMPRuntime.h:802
llvm::SmallVectorImpl
Definition: LLVM.h:36
clang::Declarator::setTemplateParameterLists
void setTemplateParameterLists(ArrayRef< TemplateParameterList *> TPLs)
Sets the template parameter lists that preceded the declarator.
Definition: DeclSpec.h:2457
Attributes.h
clang::Token::isObjCAtKeyword
bool isObjCAtKeyword(tok::ObjCKeywordKind objcKey) const
Return true if we have an ObjC keyword identifier.
Definition: Lexer.cpp:57
clang::DeclSpec::setExternInLinkageSpec
void setExternInLinkageSpec(bool Value)
Definition: DeclSpec.h:452
clang::UnqualifiedId
Represents a C++ unqualified-id that has been parsed.
Definition: DeclSpec.h:960
PrettyDeclStackTrace.h
clang::Parser::getTypeAnnotation
static ParsedType getTypeAnnotation(const Token &Tok)
getTypeAnnotation - Read a parsed type out of an annotation token.
Definition: Parser.h:764
clang::ActionResult::get
PtrTy get() const
Definition: Ownership.h:170
clang::AS_private
Definition: Specifiers.h:116
clang::EST_MSAny
Microsoft throw(...) extension.
Definition: ExceptionSpecificationType.h:24
clang::Sema::BuildDeclaratorGroup
DeclGroupPtrTy BuildDeclaratorGroup(MutableArrayRef< Decl *> Group)
BuildDeclaratorGroup - convert a list of declarations into a declaration group, performing any necess...
Definition: SemaDecl.cpp:13016
clang::Sema::CorrectDelayedTyposInExpr
ExprResult CorrectDelayedTyposInExpr(Expr *E, VarDecl *InitDecl=nullptr, llvm::function_ref< ExprResult(Expr *)> Filter=[](Expr *E) -> ExprResult { return E;})
Process any TypoExprs in the given Expr and its children, generating diagnostics as appropriate and r...
Definition: SemaExprCXX.cpp:8166
clang::AttributeCommonInfo::AS_Keyword
__ptr16, alignas(...), etc.
Definition: AttributeCommonInfo.h:42
clang::ASTContext::getPrintingPolicy
const clang::PrintingPolicy & getPrintingPolicy() const
Definition: ASTContext.h:671
clang::ParsedAttributes::takeAllFrom
void takeAllFrom(ParsedAttributes &attrs)
Definition: ParsedAttr.h:831
clang::TemplateIdAnnotation::getTemplateArgs
ParsedTemplateArgument * getTemplateArgs()
Retrieves a pointer to the template arguments.
Definition: ParsedTemplate.h:187
clang::MultiTemplateParamsArg
MutableArrayRef< TemplateParameterList * > MultiTemplateParamsArg
Definition: Ownership.h:277
clang::DeclaratorChunk::FunctionTypeInfo::HasTrailingReturnType
unsigned HasTrailingReturnType
HasTrailingReturnType - If this is true, a trailing return type was specified.
Definition: DeclSpec.h:1301
clang::AttrSyntax::CXX
clang::TypeResult
ActionResult< ParsedType > TypeResult
Definition: Ownership.h:265
clang::Scope
Scope - A scope is a transient data structure that is used while parsing the program.
Definition: Scope.h:40
clang::CXXScopeSpec
Represents a C++ nested-name-specifier or a global scope specifier.
Definition: DeclSpec.h:63
clang::hasAttribute
int hasAttribute(AttrSyntax Syntax, const IdentifierInfo *Scope, const IdentifierInfo *Attr, const TargetInfo &Target, const LangOptions &LangOpts)
Return the version number associated with the attribute if we recognize and implement the attribute s...
Definition: Attributes.cpp:8
clang::Parser::ConsumeAnyToken
SourceLocation ConsumeAnyToken(bool ConsumeCodeCompletionTok=false)
ConsumeAnyToken - Dispatch to the right Consume* method based on the current token type...
Definition: Parser.h:480
clang::CPlusPlus2a
Definition: LangStandard.h:51
clang::EST_BasicNoexcept
noexcept
Definition: ExceptionSpecificationType.h:26
clang::Sema::ActOnStartLinkageSpecification
Decl * ActOnStartLinkageSpecification(Scope *S, SourceLocation ExternLoc, Expr *LangStr, SourceLocation LBraceLoc)
ActOnStartLinkageSpecification - Parsed the beginning of a C++ linkage specification, including the language and (if present) the &#39;{&#39;.
Definition: SemaDeclCXX.cpp:15338
clang::DeclaratorChunk::FunctionTypeInfo
Definition: DeclSpec.h:1275
clang::DeclSpec::getSourceRange
SourceRange getSourceRange() const LLVM_READONLY
Definition: DeclSpec.h:509
clang::Token::getName
const char * getName() const
Definition: Token.h:168
llvm::SmallString
Definition: LLVM.h:34
clang::Sema::ExpressionEvaluationContext::ConstantEvaluated
The current context is "potentially evaluated" in C++11 terms, but the expression is evaluated at com...
clang::UnqualifiedIdKind::IK_Identifier
An identifier.
clang::TemplateIdAnnotation::TemplateKWLoc
SourceLocation TemplateKWLoc
TemplateKWLoc - The location of the template keyword.
Definition: ParsedTemplate.h:156
clang::ParsedAttr::setInvalid
void setInvalid(bool b=true) const
Definition: ParsedAttr.h:345
clang::AS_none
Definition: Specifiers.h:117
clang::TemplateIdAnnotation::LAngleLoc
SourceLocation LAngleLoc
The location of the &#39;<&#39; before the template argument list.
Definition: ParsedTemplate.h:177
clang::DiagnosticBuilder
A little helper class used to produce diagnostics.
Definition: Diagnostic.h:1053
CharInfo.h
clang::TST_auto
Definition: Specifiers.h:91
clang::ParsingDeclarator
A class for parsing a declarator.
Definition: RAIIObjectsForParser.h:200
clang::Declarator::isDeclarationOfFunction
bool isDeclarationOfFunction() const
Determine whether the declaration that will be produced from this declaration will be a function...
Definition: DeclSpec.cpp:312
clang::Declarator::isPastIdentifier
bool isPastIdentifier() const
isPastIdentifier - Return true if we have parsed beyond the point where the name would appear...
Definition: DeclSpec.h:2156
clang::DeclSpec::SetRangeStart
void SetRangeStart(SourceLocation Loc)
Definition: DeclSpec.h:641
clang::DeclaratorChunk::FunctionTypeInfo::NumParams
unsigned NumParams
NumParams - This is the number of formal parameters specified by the declarator.
Definition: DeclSpec.h:1314
clang::BalancedDelimiterTracker::skipToEnd
void skipToEnd()
Definition: Parser.cpp:2525
clang::CXXScopeSpec::getRange
SourceRange getRange() const
Definition: DeclSpec.h:68
clang::DeclSpec::getTypeSpecType
TST getTypeSpecType() const
Definition: DeclSpec.h:479
clang::Sema::ActOnStaticAssertDeclaration
Decl * ActOnStaticAssertDeclaration(SourceLocation StaticAssertLoc, Expr *AssertExpr, Expr *AssertMessageExpr, SourceLocation RParenLoc)
Definition: SemaDeclCXX.cpp:15578
clang::ParamIdx
A single parameter index whose accessors require each use to make explicit the parameter index encodi...
Definition: Attr.h:212
clang::Expr
This represents one expression.
Definition: Expr.h:108
IsBuiltInOrStandardCXX11Attribute
static bool IsBuiltInOrStandardCXX11Attribute(IdentifierInfo *AttrName, IdentifierInfo *ScopeName)
Definition: ParseDeclCXX.cpp:3985
clang::CharSourceRange
Represents a character-granular source range.
Definition: SourceLocation.h:250
llvm::MutableArrayRef
Definition: LLVM.h:32
Id
int Id
Definition: ASTDiff.cpp:190
clang::Preprocessor::AnnotateCachedTokens
void AnnotateCachedTokens(const Token &Tok)
We notify the Preprocessor that if it is caching tokens (because backtrack is enabled) it should repl...
Definition: Preprocessor.h:1502
clang::CPlusPlus
Definition: LangStandard.h:47
clang::VirtSpecifiers::VS_None
Definition: DeclSpec.h:2589
clang::Sema::TUK_Reference
Definition: Sema.h:2538
DeclSpec.h
This file defines the classes used to store parsed information about declaration-specifiers and decla...
clang::Parser::SkipMalformedDecl
void SkipMalformedDecl()
SkipMalformedDecl - Read tokens until we get to some likely good stopping point for skipping past a s...
Definition: ParseDecl.cpp:1922
clang::Parser::ParseUnqualifiedId
bool ParseUnqualifiedId(CXXScopeSpec &SS, bool EnteringContext, bool AllowDestructorName, bool AllowConstructorName, bool AllowDeductionGuide, ParsedType ObjectType, SourceLocation *TemplateKWLoc, UnqualifiedId &Result)
Parse a C++ unqualified-id (or a C identifier), which describes the name of an entity.
Definition: ParseExprCXX.cpp:2699
clang::Sema::TUK_Friend
Definition: Sema.h:2541
clang::VirtSpecifiers::getLastSpecifier
Specifier getLastSpecifier() const
Definition: DeclSpec.h:2617
clang::DeclaratorContext::TrailingReturnVarContext
clang::Sema::ActOnTypeName
TypeResult ActOnTypeName(Scope *S, Declarator &D)
Definition: SemaType.cpp:6026
clang::DeclaratorChunk::ParamInfo::Param
Decl * Param
Definition: DeclSpec.h:1253
clang::Preprocessor::RevertCachedTokens
void RevertCachedTokens(unsigned N)
When backtracking is enabled and tokens are cached, this allows to revert a specific number of tokens...
Definition: Preprocessor.h:1464
clang::Decl::setInvalidDecl
void setInvalidDecl(bool Invalid=true)
setInvalidDecl - Indicates the Decl had a semantic error.
Definition: DeclBase.cpp:132
clang::Parser::TemplateTy
OpaquePtr< TemplateName > TemplateTy
Definition: Parser.h:424
OperatorKinds.h
Defines an enumeration for C++ overloaded operators.
clang::Token::getLocation
SourceLocation getLocation() const
Return a source location identifier for the specified offset in the current file. ...
Definition: Token.h:126
clang::Declarator::setAsmLabel
void setAsmLabel(Expr *E)
Definition: DeclSpec.h:2517
clang::Sema::SkipBodyInfo::New
NamedDecl * New
Definition: Sema.h:1877
clang::AttributeCommonInfo::AS_CXX11
[[...]]
Definition: AttributeCommonInfo.h:30
clang::CXXScopeSpec::getBeginLoc
SourceLocation getBeginLoc() const
Definition: DeclSpec.h:72
clang::DeclaratorContext::AliasDeclContext
clang::Sema::ActOnFinishExportDecl
Decl * ActOnFinishExportDecl(Scope *S, Decl *ExportDecl, SourceLocation RBraceLoc)
Complete the definition of an export declaration.
Definition: SemaModule.cpp:689
Scope.h
clang::TemplateName
Represents a C++ template name within the type system.
Definition: TemplateName.h:191
clang::Sema::ExpressionEvaluationContext::Unevaluated
The current expression and its subexpressions occur within an unevaluated operand (C++11 [expr]p7)...
clang::DeclaratorChunk::FunctionTypeInfo::ExceptionSpecTokens
CachedTokens * ExceptionSpecTokens
Pointer to the cached tokens for an exception-specification that has not yet been parsed...
Definition: DeclSpec.h:1359
clang::TemplateNameKind
TemplateNameKind
Specifies the kind of template name that an identifier refers to.
Definition: TemplateKinds.h:20
clang::InClassInitStyle
InClassInitStyle
In-class initialization styles for non-static data members.
Definition: Specifiers.h:258
clang::DeclaratorContext
DeclaratorContext
Definition: DeclSpec.h:1749
clang::ActionResult::isInvalid
bool isInvalid() const
Definition: Ownership.h:166
clang::BalancedDelimiterTracker::getOpenLocation
SourceLocation getOpenLocation() const
Definition: RAIIObjectsForParser.h:427
clang::Sema::getInheritingConstructorName
ParsedType getInheritingConstructorName(CXXScopeSpec &SS, SourceLocation NameLoc, IdentifierInfo &Name)
Handle the result of the special case name lookup for inheriting constructor declarations.
Definition: SemaExprCXX.cpp:49
clang::DeclSpec::isFriendSpecified
bool isFriendSpecified() const
Definition: DeclSpec.h:740
clang::ActionResult::isUsable
bool isUsable() const
Definition: Ownership.h:167
clang::DeclaratorContext::AliasTemplateContext
clang::ObjCSubstitutionContext::Result
The result type of a method or function.
clang::Sema::CodeCompleteNamespaceDecl
void CodeCompleteNamespaceDecl(Scope *S)
Definition: SemaCodeComplete.cpp:5488
clang::Sema::SkipBodyInfo
Definition: Sema.h:1870
clang::PrettyDeclStackTraceEntry
PrettyDeclStackTraceEntry - If a crash occurs in the parser while parsing something related to a decl...
Definition: PrettyDeclStackTrace.h:30
clang::Parser::getLangOpts
const LangOptions & getLangOpts() const
Definition: Parser.h:407
clang::AttributeCommonInfo::AS_C2x
[[...]]
Definition: AttributeCommonInfo.h:33
clang::VirtSpecifiers::VS_Sealed
Definition: DeclSpec.h:2592
clang::Scope::FunctionDeclarationScope
This is a scope that corresponds to the parameters within a function prototype for a function declara...
Definition: Scope.h:87
clang::TST_decltype_auto
Definition: Specifiers.h:92
clang::ParsingDeclSpec
A class for parsing a DeclSpec.
Definition: RAIIObjectsForParser.h:175
clang::DeclaratorContext::TypeNameContext
clang::AS_protected
Definition: Specifiers.h:115
clang::ExportDecl
Represents a C++ Modules TS module export declaration.
Definition: Decl.h:4396
clang::Sema::ActOnDecltypeExpression
ExprResult ActOnDecltypeExpression(Expr *E)
Process the expression contained within a decltype.
Definition: SemaExprCXX.cpp:6812
clang::Declarator::isArrayOfUnknownBound
bool isArrayOfUnknownBound() const
isArrayOfUnknownBound - This method returns true if the declarator is a declarator for an array of un...
Definition: DeclSpec.h:2272
Kind
Kind
Definition: ChrootChecker.cpp:29
clang::Parser::StopAtSemi
Stop skipping at semicolon.
Definition: Parser.h:1098
clang::ActionResult
ActionResult - This structure is used while parsing/acting on expressions, stmts, etc...
Definition: Ownership.h:153
clang::DeclSpec::getStorageClassSpec
SCS getStorageClassSpec() const
Definition: DeclSpec.h:447
clang::Parser::ParseTopLevelDecl
bool ParseTopLevelDecl()
Definition: Parser.h:442
clang::Sema::getASTContext
ASTContext & getASTContext() const
Definition: Sema.h:1331
clang::Declarator::hasName
bool hasName() const
hasName - Whether this declarator has a name, which might be an identifier (accessible via getIdentif...
Definition: DeclSpec.h:2162
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:86
clang::Sema::ActOnFinishLinkageSpecification
Decl * ActOnFinishLinkageSpecification(Scope *S, Decl *LinkageSpec, SourceLocation RBraceLoc)
ActOnFinishLinkageSpecification - Complete the definition of the C++ linkage specification LinkageSpe...
Definition: SemaDeclCXX.cpp:15374
clang::Token::setLength
void setLength(unsigned Len)
Definition: Token.h:135
clang::TagDecl
Represents the declaration of a struct/union/class/enum.
Definition: Decl.h:3219
clang::DeclSpec::TST_union
static const TST TST_union
Definition: DeclSpec.h:293
clang::Token::getIdentifierInfo
IdentifierInfo * getIdentifierInfo() const
Definition: Token.h:179
clang::Token::setAnnotationEndLoc
void setAnnotationEndLoc(SourceLocation L)
Definition: Token.h:144
clang::ParsedAttr
ParsedAttr - Represents a syntactic attribute.
Definition: ParsedAttr.h:117
clang::AS_public
Definition: Specifiers.h:114
clang::ExtensionRAIIObject
ExtensionRAIIObject - This saves the state of extension warnings when constructed and disables them...
Definition: RAIIObjectsForParser.h:252
clang::DeclSpec::SCS_typedef
Definition: DeclSpec.h:234
clang::ParsedAttributes::addNew
ParsedAttr * addNew(IdentifierInfo *attrName, SourceRange attrRange, IdentifierInfo *scopeName, SourceLocation scopeLoc, ArgsUnion *args, unsigned numArgs, ParsedAttr::Syntax syntax, SourceLocation ellipsisLoc=SourceLocation())
Add attribute with expression arguments.
Definition: ParsedAttr.h:850
clang::VirtSpecifiers::clear
void clear()
Definition: DeclSpec.h:2611
clang::Token::isAtStartOfLine
bool isAtStartOfLine() const
isAtStartOfLine - Return true if this token is at the start of a line.
Definition: Token.h:268
clang::AtomicScopeModelKind::OpenCL
clang::tok::TokenKind
TokenKind
Provides a simple uniform namespace for tokens from all C languages.
Definition: TokenKinds.h:24
llvm::SmallVector
Definition: LLVM.h:35
clang::ICIS_ListInit
Direct list-initialization.
Definition: Specifiers.h:261
clang::VirtSpecifiers
Represents a C++11 virt-specifier-seq.
Definition: DeclSpec.h:2586
clang::Preprocessor::EnterToken
void EnterToken(const Token &Tok, bool IsReinject)
Enters a token in the token stream to be lexed next.
Definition: Preprocessor.h:1480
clang::Sema::ActOnStartExportDecl
Decl * ActOnStartExportDecl(Scope *S, SourceLocation ExportLoc, SourceLocation LBraceLoc)
We have parsed the start of an export declaration, including the &#39;{&#39; (if present).
Definition: SemaModule.cpp:523
clang::FunctionDefinitionKind
FunctionDefinitionKind
Described the kind of function definition (if any) provided for a function.
Definition: DeclSpec.h:1742
clang::Parser::getCurScope
Scope * getCurScope() const
Definition: Parser.h:414
clang::Parser::ParseConstantExpressionInExprEvalContext
ExprResult ParseConstantExpressionInExprEvalContext(TypeCastState isTypeCast=NotTypeCast)
Definition: ParseExpr.cpp:201
clang::CXXScopeSpec::isInvalid
bool isInvalid() const
An error occurred during parsing of the scope specifier.
Definition: DeclSpec.h:194
clang::EST_DynamicNone
throw()
Definition: ExceptionSpecificationType.h:22
clang::Declarator::setFunctionDefinitionKind
void setFunctionDefinitionKind(FunctionDefinitionKind Val)
Definition: DeclSpec.h:2545
clang::MultiVersionKind::None
clang::Sema::TUK_Definition
Definition: Sema.h:2540
clang::ParsedAttributesView::empty
bool empty() const
Definition: ParsedAttr.h:733
clang::DeclSpec::getModulePrivateSpecLoc
SourceLocation getModulePrivateSpecLoc() const
Definition: DeclSpec.h:744
clang::IdentifierInfo::getName
StringRef getName() const
Return the actual identifier string.
Definition: IdentifierTable.h:155
clang::Scope::ClassScope
The scope of a struct/union/class definition.
Definition: Scope.h:65
clang::DeclSpec::TQ
TQ
Definition: DeclSpec.h:313
clang::DeclSpec::TQ_unspecified
Definition: DeclSpec.h:314
clang::Token::isNot
bool isNot(tok::TokenKind K) const
Definition: Token.h:98
clang::Preprocessor::isBacktrackEnabled
bool isBacktrackEnabled() const
True if EnableBacktrackAtThisPos() was called and caching of tokens is on.
Definition: Preprocessor.h:1366
clang::DeclSpec::TST_decltype_auto
static const TST TST_decltype_auto
Definition: DeclSpec.h:301
clang::Sema::SkipBodyInfo::ShouldSkip
bool ShouldSkip
Definition: Sema.h:1874
clang::CPlusPlus17
Definition: LangStandard.h:50
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
clang::SourceLocation::isValid
bool isValid() const
Return true if this is a valid SourceLocation object.
Definition: SourceLocation.h:106
clang::CachedTokens
SmallVector< Token, 4 > CachedTokens
A set of tokens that has been cached for later parsing.
Definition: DeclSpec.h:1168
clang::DeclSpec::TST_decltype
static const TST TST_decltype
Definition: DeclSpec.h:300
clang::Scope::getParent
const Scope * getParent() const
getParent - Return the scope that this is nested in.
Definition: Scope.h:228
diagnoseDynamicExceptionSpecification
static void diagnoseDynamicExceptionSpecification(Parser &P, SourceRange Range, bool IsNoexcept)
Definition: ParseDeclCXX.cpp:3708
clang::Sema::DelayedDiagnosticsState
Definition: Sema.h:736
clang::TemplateIdAnnotation::RAngleLoc
SourceLocation RAngleLoc
The location of the &#39;>&#39; after the template argument list.
Definition: ParsedTemplate.h:181
clang::Sema::CodeCompleteTag
void CodeCompleteTag(Scope *S, unsigned TagSpec)
Definition: SemaCodeComplete.cpp:4887
clang::FixItHint::CreateRemoval
static FixItHint CreateRemoval(CharSourceRange RemoveRange)
Create a code modification hint that removes the given source range.
Definition: Diagnostic.h:118
RAIIObjectsForParser.h
clang::ParsedAttributesView
Definition: ParsedAttr.h:728
clang::DeclGroupRef
Definition: DeclGroup.h:51
clang::Token::isOneOf
bool isOneOf(tok::TokenKind K1, tok::TokenKind K2) const
Definition: Token.h:99
clang::TNK_Type_template
The name refers to a template whose specialization produces a type.
Definition: TemplateKinds.h:30
clang::FDK_Deleted
Definition: DeclSpec.h:1746
clang::Token::getLength
unsigned getLength() const
Definition: Token.h:129
clang::ParsingDeclSpec::abort
void abort()
Definition: RAIIObjectsForParser.h:194
clang::SourceLocation::isMacroID
bool isMacroID() const
Definition: SourceLocation.h:99
clang::Sema::CodeCompleteNamespaceAliasDecl
void CodeCompleteNamespaceAliasDecl(Scope *S)
Definition: SemaCodeComplete.cpp:5536
clang::DeclSpec::forEachQualifier
void forEachQualifier(llvm::function_ref< void(TQ, StringRef, SourceLocation)> Handle)
This method calls the passed in handler on each qual being set.
Definition: DeclSpec.cpp:421
clang::Token::setLiteralData
void setLiteralData(const char *Ptr)
Definition: Token.h:221
clang::Sema::CodeCompleteUsingDirective
void CodeCompleteUsingDirective(Scope *S)
Definition: SemaCodeComplete.cpp:5468
clang::Parser::getTargetInfo
const TargetInfo & getTargetInfo() const
Definition: Parser.h:408
clang::VirtSpecifiers::SetSpecifier
bool SetSpecifier(Specifier VS, SourceLocation Loc, const char *&PrevSpec)
Definition: DeclSpec.cpp:1392
clang::DeclSpec::getTypeQualifiers
unsigned getTypeQualifiers() const
getTypeQualifiers - Return a set of TQs.
Definition: DeclSpec.h:550
clang::comments::tok::eof
Definition: CommentLexer.h:33
clang::DeclSpec::takeAttributesFrom
void takeAttributesFrom(ParsedAttributes &attrs)
Definition: DeclSpec.h:790
clang::Parser::Diag
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID)
Definition: Parser.cpp:72
clang::PoisonSEHIdentifiersRAIIObject
Definition: RAIIObjectsForParser.h:359
clang::DeclSpec::TST_typename
static const TST TST_typename
Definition: DeclSpec.h:297
clang::Declarator::SetRangeEnd
void SetRangeEnd(SourceLocation Loc)
SetRangeEnd - Set the end of the source range to Loc, unless it&#39;s invalid.
Definition: DeclSpec.h:1942
clang::ExceptionSpecificationType
ExceptionSpecificationType
The various types of exception specifications that exist in C++11.
Definition: ExceptionSpecificationType.h:20
clang::Sema::ExpressionEvaluationContextRecord::EK_Decltype
Definition: Sema.h:1089
clang::FixItHint::CreateInsertion
static FixItHint CreateInsertion(SourceLocation InsertionLoc, StringRef Code, bool BeforePreviousInsertions=false)
Create a code modification hint that inserts the given code string at a specific location.
Definition: Diagnostic.h:92
clang::Scope::ClassInheritanceScope
We are between inheritance colon and the real class/struct definition scope.
Definition: Scope.h:133
clang::DeclaratorChunk::FunctionTypeInfo::getExceptionSpecType
ExceptionSpecificationType getExceptionSpecType() const
Get the type of exception specification this function has.
Definition: DeclSpec.h:1484
clang::Sema::TUK_Declaration
Definition: Sema.h:2539
clang::Parser::TemplateParameterLists
SmallVector< TemplateParameterList *, 4 > TemplateParameterLists
Definition: Parser.h:426
clang::DeclSpec::getTypeSpecScope
CXXScopeSpec & getTypeSpecScope()
Definition: DeclSpec.h:506
clang::Scope::DeclScope
This is a scope that can contain a declaration.
Definition: Scope.h:59
clang::DeclSpec::SetTypeSpecType
bool SetTypeSpecType(TST T, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const PrintingPolicy &Policy)
Definition: DeclSpec.cpp:796
clang::Declarator::getIdentifierLoc
SourceLocation getIdentifierLoc() const
Definition: DeclSpec.h:2178
clang::CXXScopeSpec::isSet
bool isSet() const
Deprecated.
Definition: DeclSpec.h:209
clang::VirtSpecifiers::VS_Final
Definition: DeclSpec.h:2591
clang::ParsedAttr::getMaxArgs
unsigned getMaxArgs() const
Definition: ParsedAttr.cpp:134
clang::Declarator::getCXX11AttributeRanges
void getCXX11AttributeRanges(SmallVectorImpl< SourceRange > &Ranges)
Return a source range list of C++11 attributes associated with the declarator.
Definition: DeclSpec.h:2511
X
X
Add a minimal nested name specifier fixit hint to allow lookup of a tag name from an outer enclosing ...
Definition: SemaDecl.cpp:14780
clang::Parser::ParseConstantExpression
ExprResult ParseConstantExpression(TypeCastState isTypeCast=NotTypeCast)
Definition: ParseExpr.cpp:211
clang::DeclSpec
Captures information about "declaration specifiers".
Definition: DeclSpec.h:228
clang::ExprResult
ActionResult< Expr * > ExprResult
Definition: Ownership.h:263
clang::SourceRange::setEnd
void setEnd(SourceLocation e)
Definition: SourceLocation.h:220
clang::Parser::ConsumeToken
SourceLocation ConsumeToken()
ConsumeToken - Consume the current &#39;peek token&#39; and lex the next one.
Definition: Parser.h:452
clang::SourceRange::isValid
bool isValid() const
Definition: SourceLocation.h:222
clang::VirtSpecifiers::VS_Override
Definition: DeclSpec.h:2590
clang::SourceLocation::isInvalid
bool isInvalid() const
Definition: SourceLocation.h:107
clang::tok::isPragmaAnnotation
bool isPragmaAnnotation(TokenKind K)
Return true if this is an annotation token representing a pragma.
Definition: TokenKinds.cpp:59
clang::CXXScopeSpec::isNotEmpty
bool isNotEmpty() const
A scope specifier is present, but may be valid or invalid.
Definition: DeclSpec.h:191
clang::AttrSyntax::C
clang::Declarator::getDeclSpec
const DeclSpec & getDeclSpec() const
getDeclSpec - Return the declaration-specifier that this declarator was declared with.
Definition: DeclSpec.h:1895
clang::FixItHint::CreateReplacement
static FixItHint CreateReplacement(CharSourceRange RemoveRange, StringRef Code)
Create a code modification hint that replaces the given source range with the given code string...
Definition: Diagnostic.h:129
clang::IdentifierInfo::revertTokenIDToIdentifier
void revertTokenIDToIdentifier()
Revert TokenID to tok::identifier; used for GNU libstdc++ 4.2 compatibility.
Definition: IdentifierTable.h:196
clang::UnqualifiedIdKind::IK_TemplateId
A template-id, e.g., f<int>.
clang::VirtSpecifiers::getFirstLocation
SourceLocation getFirstLocation() const
Definition: DeclSpec.h:2615
clang::ParsedAttributesView::back
ParsedAttr & back()
Definition: ParsedAttr.h:799
clang::StringLiteral
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1711
TargetInfo.h
Defines the clang::TargetInfo interface.
clang::Declarator::ExtendWithDeclSpec
void ExtendWithDeclSpec(const DeclSpec &DS)
ExtendWithDeclSpec - Extend the declarator source range to include the given declspec, unless its location is invalid.
Definition: DeclSpec.h:1949
clang::ExprError
ExprResult ExprError()
Definition: Ownership.h:279
clang::OpaquePtr::make
static OpaquePtr make(PtrTy P)
Definition: Ownership.h:60
clang::DeclSpec::TST_struct
static const TST TST_struct
Definition: DeclSpec.h:294
clang::FixItHint
Annotates a diagnostic with some code that should be inserted, removed, or replaced to fix the proble...
Definition: Diagnostic.h:66
clang::AttributeCommonInfo::getParsedKind
Kind getParsedKind() const
Definition: AttributeCommonInfo.h:126
clang::Token::setLocation
void setLocation(SourceLocation L)
Definition: Token.h:134
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:207
clang::Sema::Context
ASTContext & Context
Definition: Sema.h:385
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:223
clang::UnqualifiedId::setIdentifier
void setIdentifier(const IdentifierInfo *Id, SourceLocation IdLoc)
Specify that this unqualified-id was parsed as an identifier.
Definition: DeclSpec.h:1049
clang::TagType
Definition: Type.h:4471
clang::DeclSpec::SetTypeSpecError
bool SetTypeSpecError()
Definition: DeclSpec.cpp:899
clang::DeclSpec::getRepAsExpr
Expr * getRepAsExpr() const
Definition: DeclSpec.h:497
clang::UsingDirectiveDecl
Represents C++ using-directive.
Definition: DeclCXX.h:2863
clang::TemplateIdAnnotation::NumArgs
unsigned NumArgs
NumArgs - The number of template arguments.
Definition: ParsedTemplate.h:184
clang::DeclSpec::SetRangeEnd
void SetRangeEnd(SourceLocation Loc)
Definition: DeclSpec.h:642
clang::Sema::ActOnAliasDeclaration
Decl * ActOnAliasDeclaration(Scope *CurScope, AccessSpecifier AS, MultiTemplateParamsArg TemplateParams, SourceLocation UsingLoc, UnqualifiedId &Name, const ParsedAttributesView &AttrList, TypeResult Type, Decl *DeclFromDeclSpec)
Definition: SemaDeclCXX.cpp:12123
clang::SourceRange::getBegin
SourceLocation getBegin() const
Definition: SourceLocation.h:216
clang::ParsedAttributes
ParsedAttributes - A collection of parsed attributes.
Definition: ParsedAttr.h:824
ColonLoc
SourceLocation ColonLoc
Location of &#39;:&#39;.
Definition: OpenMPClause.h:107
clang::Declarator::setCommaLoc
void setCommaLoc(SourceLocation CL)
Definition: DeclSpec.h:2539
clang::Token::hasLeadingSpace
bool hasLeadingSpace() const
Return true if this token has whitespace before it.
Definition: Token.h:272
clang::ICIS_NoInit
No in-class initializer.
Definition: Specifiers.h:259
clang::Sema::ActOnUsingDeclaration
Decl * ActOnUsingDeclaration(Scope *CurScope, AccessSpecifier AS, SourceLocation UsingLoc, SourceLocation TypenameLoc, CXXScopeSpec &SS, UnqualifiedId &Name, SourceLocation EllipsisLoc, const ParsedAttributesView &AttrList)
Definition: SemaDeclCXX.cpp:11089
clang::Parser::ParseConstraintLogicalOrExpression
ExprResult ParseConstraintLogicalOrExpression(bool IsTrailingRequiresClause)
Parse a constraint-logical-or-expression.
Definition: ParseExpr.cpp:349
clang::DeclaratorChunk::FunctionTypeInfo::Params
ParamInfo * Params
Params - This is a pointer to a new[]&#39;d array of ParamInfo objects that describe the parameters speci...
Definition: DeclSpec.h:1339
clang::Parser::ParseTypeName
TypeResult ParseTypeName(SourceRange *Range=nullptr, DeclaratorContext Context=DeclaratorContext::TypeNameContext, AccessSpecifier AS=AS_none, Decl **OwnedType=nullptr, ParsedAttributes *Attrs=nullptr)
ParseTypeName type-name: [C99 6.7.6] specifier-qualifier-list abstract-declarator[opt].
Definition: ParseDecl.cpp:42
clang::Attr
Attr - This represents one attribute.
Definition: Attr.h:45
clang::Decl::getLocation
SourceLocation getLocation() const
Definition: DeclBase.h:429
clang::Token::startToken
void startToken()
Reset all flags to cleared.
Definition: Token.h:171
clang::TemplateIdAnnotation::Template
ParsedTemplateTy Template
The declaration of the template corresponding to the template-name.
Definition: ParsedTemplate.h:170
clang::Parser::StopBeforeMatch
Stop skipping at specified token, but don&#39;t skip the token itself.
Definition: Parser.h:1100
clang::Token::getEndLoc
SourceLocation getEndLoc() const
Definition: Token.h:153