Coverage Report

Created: 2021-01-19 06:58

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp
Line
Count
Source (jump to first uncovered line)
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
76.9k
                                              SourceLocation InlineLoc) {
61
76.9k
  assert(Tok.is(tok::kw_namespace) && "Not a namespace!");
62
76.9k
  SourceLocation NamespaceLoc = ConsumeToken();  // eat the 'namespace'.
63
76.9k
  ObjCDeclContextSwitch ObjCDC(*this);
64
65
76.9k
  if (Tok.is(tok::code_completion)) {
66
1
    Actions.CodeCompleteNamespaceDecl(getCurScope());
67
1
    cutOffParsing();
68
1
    return nullptr;
69
1
  }
70
71
76.9k
  SourceLocation IdentLoc;
72
76.9k
  IdentifierInfo *Ident = nullptr;
73
76.9k
  InnerNamespaceInfoList ExtraNSs;
74
76.9k
  SourceLocation FirstNestedInlineLoc;
75
76
76.9k
  ParsedAttributesWithRange attrs(AttrFactory);
77
76.9k
  SourceLocation attrLoc;
78
76.9k
  if (getLangOpts().CPlusPlus11 && 
isCXX11AttributeSpecifier()74.2k
) {
79
10
    Diag(Tok.getLocation(), getLangOpts().CPlusPlus17
80
9
                                ? diag::warn_cxx14_compat_ns_enum_attribute
81
1
                                : diag::ext_ns_enum_attribute)
82
10
      << 0 /*namespace*/;
83
10
    attrLoc = Tok.getLocation();
84
10
    ParseCXX11Attributes(attrs);
85
10
  }
86
87
76.9k
  if (Tok.is(tok::identifier)) {
88
75.0k
    Ident = Tok.getIdentifierInfo();
89
75.0k
    IdentLoc = ConsumeToken();  // eat the identifier.
90
75.1k
    while (Tok.is(tok::coloncolon) &&
91
98
           (NextToken().is(tok::identifier) ||
92
13
            (NextToken().is(tok::kw_inline) &&
93
98
             
GetLookAheadToken(2).is(tok::identifier)13
))) {
94
95
98
      InnerNamespaceInfo Info;
96
98
      Info.NamespaceLoc = ConsumeToken();
97
98
98
      if (Tok.is(tok::kw_inline)) {
99
13
        Info.InlineLoc = ConsumeToken();
100
13
        if (FirstNestedInlineLoc.isInvalid())
101
7
          FirstNestedInlineLoc = Info.InlineLoc;
102
13
      }
103
104
98
      Info.Ident = Tok.getIdentifierInfo();
105
98
      Info.IdentLoc = ConsumeToken();
106
107
98
      ExtraNSs.push_back(Info);
108
98
    }
109
75.0k
  }
110
111
  // A nested namespace definition cannot have attributes.
112
76.9k
  if (!ExtraNSs.empty() && 
attrLoc.isValid()65
)
113
1
    Diag(attrLoc, diag::err_unexpected_nested_namespace_attribute);
114
115
  // Read label attributes, if present.
116
76.9k
  if (Tok.is(tok::kw___attribute)) {
117
48
    attrLoc = Tok.getLocation();
118
48
    ParseGNUAttributes(attrs);
119
48
  }
120
121
76.9k
  if (Tok.is(tok::equal)) {
122
339
    if (!Ident) {
123
1
      Diag(Tok, diag::err_expected) << tok::identifier;
124
      // Skip to end of the definition and eat the ';'.
125
1
      SkipUntil(tok::semi);
126
1
      return nullptr;
127
1
    }
128
338
    if (attrLoc.isValid())
129
2
      Diag(attrLoc, diag::err_unexpected_namespace_attributes_alias);
130
338
    if (InlineLoc.isValid())
131
0
      Diag(InlineLoc, diag::err_inline_namespace_alias)
132
0
          << FixItHint::CreateRemoval(InlineLoc);
133
338
    Decl *NSAlias = ParseNamespaceAlias(NamespaceLoc, IdentLoc, Ident, DeclEnd);
134
338
    return Actions.ConvertDeclToDeclGroup(NSAlias);
135
338
}
136
137
76.5k
  BalancedDelimiterTracker T(*this, tok::l_brace);
138
76.5k
  if (T.consumeOpen()) {
139
7
    if (Ident)
140
0
      Diag(Tok, diag::err_expected) << tok::l_brace;
141
7
    else
142
7
      Diag(Tok, diag::err_expected_either) << tok::identifier << tok::l_brace;
143
7
    return nullptr;
144
7
  }
145
146
76.5k
  if (getCurScope()->isClassScope() || getCurScope()->isTemplateParamScope() ||
147
76.5k
      getCurScope()->isInObjcMethodScope() || getCurScope()->getBlockParent() ||
148
76.5k
      getCurScope()->getFnParent()) {
149
1
    Diag(T.getOpenLocation(), diag::err_namespace_nonnamespace_scope);
150
1
    SkipUntil(tok::r_brace);
151
1
    return nullptr;
152
1
  }
153
154
76.5k
  if (ExtraNSs.empty()) {
155
    // Normal namespace definition, not a nested-namespace-definition.
156
65
  } else if (InlineLoc.isValid()) {
157
5
    Diag(InlineLoc, diag::err_inline_nested_namespace_definition);
158
60
  } else if (getLangOpts().CPlusPlus20) {
159
26
    Diag(ExtraNSs[0].NamespaceLoc,
160
26
         diag::warn_cxx14_compat_nested_namespace_definition);
161
26
    if (FirstNestedInlineLoc.isValid())
162
3
      Diag(FirstNestedInlineLoc,
163
3
           diag::warn_cxx17_compat_inline_nested_namespace_definition);
164
34
  } else if (getLangOpts().CPlusPlus17) {
165
22
    Diag(ExtraNSs[0].NamespaceLoc,
166
22
         diag::warn_cxx14_compat_nested_namespace_definition);
167
22
    if (FirstNestedInlineLoc.isValid())
168
2
      Diag(FirstNestedInlineLoc, diag::ext_inline_nested_namespace_definition);
169
12
  } else {
170
12
    TentativeParsingAction TPA(*this);
171
12
    SkipUntil(tok::r_brace, StopBeforeMatch);
172
12
    Token rBraceToken = Tok;
173
12
    TPA.Revert();
174
175
12
    if (!rBraceToken.is(tok::r_brace)) {
176
0
      Diag(ExtraNSs[0].NamespaceLoc, diag::ext_nested_namespace_definition)
177
0
          << SourceRange(ExtraNSs.front().NamespaceLoc,
178
0
                         ExtraNSs.back().IdentLoc);
179
12
    } else {
180
12
      std::string NamespaceFix;
181
23
      for (const auto &ExtraNS : ExtraNSs) {
182
23
        NamespaceFix += " { ";
183
23
        if (ExtraNS.InlineLoc.isValid())
184
4
          NamespaceFix += "inline ";
185
23
        NamespaceFix += "namespace ";
186
23
        NamespaceFix += ExtraNS.Ident->getName();
187
23
      }
188
189
12
      std::string RBraces;
190
35
      for (unsigned i = 0, e = ExtraNSs.size(); i != e; 
++i23
)
191
23
        RBraces +=  "} ";
192
193
12
      Diag(ExtraNSs[0].NamespaceLoc, diag::ext_nested_namespace_definition)
194
12
          << FixItHint::CreateReplacement(
195
12
                 SourceRange(ExtraNSs.front().NamespaceLoc,
196
12
                             ExtraNSs.back().IdentLoc),
197
12
                 NamespaceFix)
198
12
          << FixItHint::CreateInsertion(rBraceToken.getLocation(), RBraces);
199
12
    }
200
201
    // Warn about nested inline namespaces.
202
12
    if (FirstNestedInlineLoc.isValid())
203
2
      Diag(FirstNestedInlineLoc, diag::ext_inline_nested_namespace_definition);
204
12
  }
205
206
  // If we're still good, complain about inline namespaces in non-C++0x now.
207
76.5k
  if (InlineLoc.isValid())
208
20.1k
    Diag(InlineLoc, getLangOpts().CPlusPlus11 ?
209
20.1k
         diag::warn_cxx98_compat_inline_namespace : 
diag::ext_inline_namespace16
);
210
211
  // Enter a scope for the namespace.
212
76.5k
  ParseScope NamespaceScope(this, Scope::DeclScope);
213
214
76.5k
  UsingDirectiveDecl *ImplicitUsingDirectiveDecl = nullptr;
215
76.5k
  Decl *NamespcDecl = Actions.ActOnStartNamespaceDef(
216
76.5k
      getCurScope(), InlineLoc, NamespaceLoc, IdentLoc, Ident,
217
76.5k
      T.getOpenLocation(), attrs, ImplicitUsingDirectiveDecl);
218
219
76.5k
  PrettyDeclStackTraceEntry CrashInfo(Actions.Context, NamespcDecl,
220
76.5k
                                      NamespaceLoc, "parsing namespace");
221
222
  // Parse the contents of the namespace.  This includes parsing recovery on
223
  // any improperly nested namespaces.
224
76.5k
  ParseInnerNamespace(ExtraNSs, 0, InlineLoc, attrs, T);
225
226
  // Leave the namespace scope.
227
76.5k
  NamespaceScope.Exit();
228
229
76.5k
  DeclEnd = T.getCloseLocation();
230
76.5k
  Actions.ActOnFinishNamespaceDef(NamespcDecl, DeclEnd);
231
232
76.5k
  return Actions.ConvertDeclToDeclGroup(NamespcDecl,
233
76.5k
                                        ImplicitUsingDirectiveDecl);
234
76.5k
}
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
76.6k
                                 BalancedDelimiterTracker &Tracker) {
241
76.6k
  if (index == InnerNSs.size()) {
242
1.47M
    while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
243
1.39M
           Tok.isNot(tok::eof)) {
244
1.39M
      ParsedAttributesWithRange attrs(AttrFactory);
245
1.39M
      MaybeParseCXX11Attributes(attrs);
246
1.39M
      ParseExternalDeclaration(attrs);
247
1.39M
    }
248
249
    // The caller is what called check -- we are simply calling
250
    // the close for it.
251
76.5k
    Tracker.consumeClose();
252
253
76.5k
    return;
254
76.5k
  }
255
256
  // Handle a nested namespace definition.
257
  // FIXME: Preserve the source information through to the AST rather than
258
  // desugaring it here.
259
98
  ParseScope NamespaceScope(this, Scope::DeclScope);
260
98
  UsingDirectiveDecl *ImplicitUsingDirectiveDecl = nullptr;
261
98
  Decl *NamespcDecl = Actions.ActOnStartNamespaceDef(
262
98
      getCurScope(), InnerNSs[index].InlineLoc, InnerNSs[index].NamespaceLoc,
263
98
      InnerNSs[index].IdentLoc, InnerNSs[index].Ident,
264
98
      Tracker.getOpenLocation(), attrs, ImplicitUsingDirectiveDecl);
265
98
  assert(!ImplicitUsingDirectiveDecl &&
266
98
         "nested namespace definition cannot define anonymous namespace");
267
268
98
  ParseInnerNamespace(InnerNSs, ++index, InlineLoc, attrs, Tracker);
269
270
98
  NamespaceScope.Exit();
271
98
  Actions.ActOnFinishNamespaceDef(NamespcDecl, Tracker.getCloseLocation());
272
98
}
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
338
                                  SourceLocation &DeclEnd) {
281
338
  assert(Tok.is(tok::equal) && "Not equal token");
282
283
338
  ConsumeToken(); // eat the '='.
284
285
338
  if (Tok.is(tok::code_completion)) {
286
1
    Actions.CodeCompleteNamespaceAliasDecl(getCurScope());
287
1
    cutOffParsing();
288
1
    return nullptr;
289
1
  }
290
291
337
  CXXScopeSpec SS;
292
  // Parse (optional) nested-name-specifier.
293
337
  ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
294
337
                                 /*ObjectHadErrors=*/false,
295
337
                                 /*EnteringContext=*/false,
296
337
                                 /*MayBePseudoDestructor=*/nullptr,
297
337
                                 /*IsTypename=*/false,
298
337
                                 /*LastII=*/nullptr,
299
337
                                 /*OnlyNamespace=*/true);
300
301
337
  if (Tok.isNot(tok::identifier)) {
302
2
    Diag(Tok, diag::err_expected_namespace_name);
303
    // Skip to end of the definition and eat the ';'.
304
2
    SkipUntil(tok::semi);
305
2
    return nullptr;
306
2
  }
307
308
335
  if (SS.isInvalid()) {
309
    // Diagnostics have been emitted in ParseOptionalCXXScopeSpecifier.
310
    // Skip to end of the definition and eat the ';'.
311
4
    SkipUntil(tok::semi);
312
4
    return nullptr;
313
4
  }
314
315
  // Parse identifier.
316
331
  IdentifierInfo *Ident = Tok.getIdentifierInfo();
317
331
  SourceLocation IdentLoc = ConsumeToken();
318
319
  // Eat the ';'.
320
331
  DeclEnd = Tok.getLocation();
321
331
  if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after_namespace_name))
322
0
    SkipUntil(tok::semi);
323
324
331
  return Actions.ActOnNamespaceAliasDef(getCurScope(), NamespaceLoc, AliasLoc,
325
331
                                        Alias, SS, IdentLoc, Ident);
326
331
}
327
328
/// ParseLinkage - We know that the current token is a string_literal
329
/// and just before that, that extern was seen.
330
///
331
///       linkage-specification: [C++ 7.5p2: dcl.link]
332
///         'extern' string-literal '{' declaration-seq[opt] '}'
333
///         'extern' string-literal declaration
334
///
335
151k
Decl *Parser::ParseLinkage(ParsingDeclSpec &DS, DeclaratorContext Context) {
336
151k
  assert(isTokenStringLiteral() && "Not a string literal!");
337
151k
  ExprResult Lang = ParseStringLiteralExpression(false);
338
339
151k
  ParseScope LinkageScope(this, Scope::DeclScope);
340
151k
  Decl *LinkageSpec =
341
151k
      Lang.isInvalid()
342
1
          ? nullptr
343
151k
          : Actions.ActOnStartLinkageSpecification(
344
151k
                getCurScope(), DS.getSourceRange().getBegin(), Lang.get(),
345
87.9k
                Tok.is(tok::l_brace) ? 
Tok.getLocation()63.6k
: SourceLocation());
346
347
151k
  ParsedAttributesWithRange attrs(AttrFactory);
348
151k
  MaybeParseCXX11Attributes(attrs);
349
350
151k
  if (Tok.isNot(tok::l_brace)) {
351
    // Reset the source range in DS, as the leading "extern"
352
    // does not really belong to the inner declaration ...
353
87.9k
    DS.SetRangeStart(SourceLocation());
354
87.9k
    DS.SetRangeEnd(SourceLocation());
355
    // ... but anyway remember that such an "extern" was seen.
356
87.9k
    DS.setExternInLinkageSpec(true);
357
87.9k
    ParseExternalDeclaration(attrs, &DS);
358
87.9k
    return LinkageSpec ? Actions.ActOnFinishLinkageSpecification(
359
87.9k
                             getCurScope(), LinkageSpec, SourceLocation())
360
4
                       : nullptr;
361
87.9k
  }
362
363
63.6k
  DS.abort();
364
365
63.6k
  ProhibitAttributes(attrs);
366
367
63.6k
  BalancedDelimiterTracker T(*this, tok::l_brace);
368
63.6k
  T.consumeOpen();
369
370
63.6k
  unsigned NestedModules = 0;
371
1.17M
  while (true) {
372
1.17M
    switch (Tok.getKind()) {
373
26.4k
    case tok::annot_module_begin:
374
26.4k
      ++NestedModules;
375
26.4k
      ParseTopLevelDecl();
376
26.4k
      continue;
377
378
26.4k
    case tok::annot_module_end:
379
26.4k
      if (!NestedModules)
380
2
        break;
381
26.4k
      --NestedModules;
382
26.4k
      ParseTopLevelDecl();
383
26.4k
      continue;
384
385
6.79k
    case tok::annot_module_include:
386
6.79k
      ParseTopLevelDecl();
387
6.79k
      continue;
388
389
1
    case tok::eof:
390
1
      break;
391
392
63.6k
    case tok::r_brace:
393
63.6k
      if (!NestedModules)
394
63.6k
        break;
395
2
      LLVM_FALLTHROUGH;
396
1.04M
    default:
397
1.04M
      ParsedAttributesWithRange attrs(AttrFactory);
398
1.04M
      MaybeParseCXX11Attributes(attrs);
399
1.04M
      ParseExternalDeclaration(attrs);
400
1.04M
      continue;
401
63.6k
    }
402
403
63.6k
    break;
404
63.6k
  }
405
406
63.6k
  T.consumeClose();
407
63.6k
  return LinkageSpec ? Actions.ActOnFinishLinkageSpecification(
408
63.6k
                           getCurScope(), LinkageSpec, T.getCloseLocation())
409
5
                     : nullptr;
410
63.6k
}
411
412
/// Parse a C++ Modules TS export-declaration.
413
///
414
///       export-declaration:
415
///         'export' declaration
416
///         'export' '{' declaration-seq[opt] '}'
417
///
418
103
Decl *Parser::ParseExportDeclaration() {
419
103
  assert(Tok.is(tok::kw_export));
420
103
  SourceLocation ExportLoc = ConsumeToken();
421
422
103
  ParseScope ExportScope(this, Scope::DeclScope);
423
103
  Decl *ExportDecl = Actions.ActOnStartExportDecl(
424
103
      getCurScope(), ExportLoc,
425
83
      Tok.is(tok::l_brace) ? 
Tok.getLocation()20
: SourceLocation());
426
427
103
  if (Tok.isNot(tok::l_brace)) {
428
    // FIXME: Factor out a ParseExternalDeclarationWithAttrs.
429
83
    ParsedAttributesWithRange Attrs(AttrFactory);
430
83
    MaybeParseCXX11Attributes(Attrs);
431
83
    MaybeParseMicrosoftAttributes(Attrs);
432
83
    ParseExternalDeclaration(Attrs);
433
83
    return Actions.ActOnFinishExportDecl(getCurScope(), ExportDecl,
434
83
                                         SourceLocation());
435
83
  }
436
437
20
  BalancedDelimiterTracker T(*this, tok::l_brace);
438
20
  T.consumeOpen();
439
440
  // The Modules TS draft says "An export-declaration shall declare at least one
441
  // entity", but the intent is that it shall contain at least one declaration.
442
20
  if (Tok.is(tok::r_brace) && 
getLangOpts().ModulesTS1
) {
443
1
    Diag(ExportLoc, diag::err_export_empty)
444
1
        << SourceRange(ExportLoc, Tok.getLocation());
445
1
  }
446
447
109
  while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
448
89
         Tok.isNot(tok::eof)) {
449
89
    ParsedAttributesWithRange Attrs(AttrFactory);
450
89
    MaybeParseCXX11Attributes(Attrs);
451
89
    MaybeParseMicrosoftAttributes(Attrs);
452
89
    ParseExternalDeclaration(Attrs);
453
89
  }
454
455
20
  T.consumeClose();
456
20
  return Actions.ActOnFinishExportDecl(getCurScope(), ExportDecl,
457
20
                                       T.getCloseLocation());
458
20
}
459
460
/// ParseUsingDirectiveOrDeclaration - Parse C++ using using-declaration or
461
/// using-directive. Assumes that current token is 'using'.
462
Parser::DeclGroupPtrTy
463
Parser::ParseUsingDirectiveOrDeclaration(DeclaratorContext Context,
464
                                         const ParsedTemplateInfo &TemplateInfo,
465
                                         SourceLocation &DeclEnd,
466
158k
                                         ParsedAttributesWithRange &attrs) {
467
158k
  assert(Tok.is(tok::kw_using) && "Not using token");
468
158k
  ObjCDeclContextSwitch ObjCDC(*this);
469
470
  // Eat 'using'.
471
158k
  SourceLocation UsingLoc = ConsumeToken();
472
473
158k
  if (Tok.is(tok::code_completion)) {
474
1
    Actions.CodeCompleteUsing(getCurScope());
475
1
    cutOffParsing();
476
1
    return nullptr;
477
1
  }
478
479
  // Consume unexpected 'template' keywords.
480
158k
  
while (158k
Tok.is(tok::kw_template)) {
481
5
    SourceLocation TemplateLoc = ConsumeToken();
482
5
    Diag(TemplateLoc, diag::err_unexpected_template_after_using)
483
5
        << FixItHint::CreateRemoval(TemplateLoc);
484
5
  }
485
486
  // 'using namespace' means this is a using-directive.
487
158k
  if (Tok.is(tok::kw_namespace)) {
488
    // Template parameters are always an error here.
489
2.37k
    if (TemplateInfo.Kind) {
490
1
      SourceRange R = TemplateInfo.getSourceRange();
491
1
      Diag(UsingLoc, diag::err_templated_using_directive_declaration)
492
1
        << 0 /* directive */ << R << FixItHint::CreateRemoval(R);
493
1
    }
494
495
2.37k
    Decl *UsingDir = ParseUsingDirective(Context, UsingLoc, DeclEnd, attrs);
496
2.37k
    return Actions.ConvertDeclToDeclGroup(UsingDir);
497
2.37k
  }
498
499
  // Otherwise, it must be a using-declaration or an alias-declaration.
500
501
  // Using declarations can't have attributes.
502
155k
  ProhibitAttributes(attrs);
503
504
155k
  return ParseUsingDeclaration(Context, TemplateInfo, UsingLoc, DeclEnd,
505
155k
                               AS_none);
506
155k
}
507
508
/// ParseUsingDirective - Parse C++ using-directive, assumes
509
/// that current token is 'namespace' and 'using' was already parsed.
510
///
511
///       using-directive: [C++ 7.3.p4: namespace.udir]
512
///        'using' 'namespace' ::[opt] nested-name-specifier[opt]
513
///                 namespace-name ;
514
/// [GNU] using-directive:
515
///        'using' 'namespace' ::[opt] nested-name-specifier[opt]
516
///                 namespace-name attributes[opt] ;
517
///
518
Decl *Parser::ParseUsingDirective(DeclaratorContext Context,
519
                                  SourceLocation UsingLoc,
520
                                  SourceLocation &DeclEnd,
521
2.37k
                                  ParsedAttributes &attrs) {
522
2.37k
  assert(Tok.is(tok::kw_namespace) && "Not 'namespace' token");
523
524
  // Eat 'namespace'.
525
2.37k
  SourceLocation NamespcLoc = ConsumeToken();
526
527
2.37k
  if (Tok.is(tok::code_completion)) {
528
1
    Actions.CodeCompleteUsingDirective(getCurScope());
529
1
    cutOffParsing();
530
1
    return nullptr;
531
1
  }
532
533
2.36k
  CXXScopeSpec SS;
534
  // Parse (optional) nested-name-specifier.
535
2.36k
  ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
536
2.36k
                                 /*ObjectHadErrors=*/false,
537
2.36k
                                 /*EnteringContext=*/false,
538
2.36k
                                 /*MayBePseudoDestructor=*/nullptr,
539
2.36k
                                 /*IsTypename=*/false,
540
2.36k
                                 /*LastII=*/nullptr,
541
2.36k
                                 /*OnlyNamespace=*/true);
542
543
2.36k
  IdentifierInfo *NamespcName = nullptr;
544
2.36k
  SourceLocation IdentLoc = SourceLocation();
545
546
  // Parse namespace-name.
547
2.36k
  if (Tok.isNot(tok::identifier)) {
548
1
    Diag(Tok, diag::err_expected_namespace_name);
549
    // If there was invalid namespace name, skip to end of decl, and eat ';'.
550
1
    SkipUntil(tok::semi);
551
    // FIXME: Are there cases, when we would like to call ActOnUsingDirective?
552
1
    return nullptr;
553
1
  }
554
555
2.36k
  if (SS.isInvalid()) {
556
    // Diagnostics have been emitted in ParseOptionalCXXScopeSpecifier.
557
    // Skip to end of the definition and eat the ';'.
558
4
    SkipUntil(tok::semi);
559
4
    return nullptr;
560
4
  }
561
562
  // Parse identifier.
563
2.36k
  NamespcName = Tok.getIdentifierInfo();
564
2.36k
  IdentLoc = ConsumeToken();
565
566
  // Parse (optional) attributes (most likely GNU strong-using extension).
567
2.36k
  bool GNUAttr = false;
568
2.36k
  if (Tok.is(tok::kw___attribute)) {
569
0
    GNUAttr = true;
570
0
    ParseGNUAttributes(attrs);
571
0
  }
572
573
  // Eat ';'.
574
2.36k
  DeclEnd = Tok.getLocation();
575
2.36k
  if (ExpectAndConsume(tok::semi,
576
0
                       GNUAttr ? diag::err_expected_semi_after_attribute_list
577
2.36k
                               : diag::err_expected_semi_after_namespace_name))
578
1
    SkipUntil(tok::semi);
579
580
2.36k
  return Actions.ActOnUsingDirective(getCurScope(), UsingLoc, NamespcLoc, SS,
581
2.36k
                                     IdentLoc, NamespcName, attrs);
582
2.36k
}
583
584
/// Parse a using-declarator (or the identifier in a C++11 alias-declaration).
585
///
586
///     using-declarator:
587
///       'typename'[opt] nested-name-specifier unqualified-id
588
///
589
bool Parser::ParseUsingDeclarator(DeclaratorContext Context,
590
202k
                                  UsingDeclarator &D) {
591
202k
  D.clear();
592
593
  // Ignore optional 'typename'.
594
  // FIXME: This is wrong; we should parse this as a typename-specifier.
595
202k
  TryConsumeToken(tok::kw_typename, D.TypenameLoc);
596
597
202k
  if (Tok.is(tok::kw___super)) {
598
1
    Diag(Tok.getLocation(), diag::err_super_in_using_declaration);
599
1
    return true;
600
1
  }
601
602
  // Parse nested-name-specifier.
603
202k
  IdentifierInfo *LastII = nullptr;
604
202k
  if (ParseOptionalCXXScopeSpecifier(D.SS, /*ObjectType=*/nullptr,
605
202k
                                     /*ObjectHadErrors=*/false,
606
202k
                                     /*EnteringContext=*/false,
607
202k
                                     /*MayBePseudoDtor=*/nullptr,
608
202k
                                     /*IsTypename=*/false,
609
202k
                                     /*LastII=*/&LastII,
610
202k
                                     /*OnlyNamespace=*/false,
611
202k
                                     /*InUsingDeclaration=*/true))
612
613
0
    return true;
614
202k
  if (D.SS.isInvalid())
615
4
    return true;
616
617
  // Parse the unqualified-id. We allow parsing of both constructor and
618
  // destructor names and allow the action module to diagnose any semantic
619
  // errors.
620
  //
621
  // C++11 [class.qual]p2:
622
  //   [...] in a using-declaration that is a member-declaration, if the name
623
  //   specified after the nested-name-specifier is the same as the identifier
624
  //   or the simple-template-id's template-name in the last component of the
625
  //   nested-name-specifier, the name is [...] considered to name the
626
  //   constructor.
627
202k
  if (getLangOpts().CPlusPlus11 && 
Context == DeclaratorContext::Member201k
&&
628
46.9k
      Tok.is(tok::identifier) &&
629
46.7k
      (NextToken().is(tok::semi) || 
NextToken().is(tok::comma)45.5k
||
630
45.5k
       NextToken().is(tok::ellipsis)) &&
631
1.20k
      D.SS.isNotEmpty() && LastII == Tok.getIdentifierInfo() &&
632
421
      !D.SS.getScopeRep()->getAsNamespace() &&
633
420
      !D.SS.getScopeRep()->getAsNamespaceAlias()) {
634
420
    SourceLocation IdLoc = ConsumeToken();
635
420
    ParsedType Type =
636
420
        Actions.getInheritingConstructorName(D.SS, IdLoc, *LastII);
637
420
    D.Name.setConstructorName(Type, IdLoc, IdLoc);
638
202k
  } else {
639
202k
    if (ParseUnqualifiedId(
640
202k
            D.SS, /*ObjectType=*/nullptr,
641
202k
            /*ObjectHadErrors=*/false, /*EnteringContext=*/false,
642
202k
            /*AllowDestructorName=*/true,
643
            /*AllowConstructorName=*/
644
202k
            !(Tok.is(tok::identifier) && 
NextToken().is(tok::equal)202k
),
645
202k
            /*AllowDeductionGuide=*/false, nullptr, D.Name))
646
16
      return true;
647
202k
  }
648
649
202k
  if (TryConsumeToken(tok::ellipsis, D.EllipsisLoc))
650
22
    Diag(Tok.getLocation(), getLangOpts().CPlusPlus17 ?
651
22
         diag::warn_cxx17_compat_using_declaration_pack :
652
0
         diag::ext_using_declaration_pack);
653
654
202k
  return false;
655
202k
}
656
657
/// ParseUsingDeclaration - Parse C++ using-declaration or alias-declaration.
658
/// Assumes that 'using' was already seen.
659
///
660
///     using-declaration: [C++ 7.3.p3: namespace.udecl]
661
///       'using' using-declarator-list[opt] ;
662
///
663
///     using-declarator-list: [C++1z]
664
///       using-declarator '...'[opt]
665
///       using-declarator-list ',' using-declarator '...'[opt]
666
///
667
///     using-declarator-list: [C++98-14]
668
///       using-declarator
669
///
670
///     alias-declaration: C++11 [dcl.dcl]p1
671
///       'using' identifier attribute-specifier-seq[opt] = type-id ;
672
///
673
Parser::DeclGroupPtrTy
674
Parser::ParseUsingDeclaration(DeclaratorContext Context,
675
                              const ParsedTemplateInfo &TemplateInfo,
676
                              SourceLocation UsingLoc, SourceLocation &DeclEnd,
677
202k
                              AccessSpecifier AS) {
678
  // Check for misplaced attributes before the identifier in an
679
  // alias-declaration.
680
202k
  ParsedAttributesWithRange MisplacedAttrs(AttrFactory);
681
202k
  MaybeParseCXX11Attributes(MisplacedAttrs);
682
683
202k
  UsingDeclarator D;
684
202k
  bool InvalidDeclarator = ParseUsingDeclarator(Context, D);
685
686
202k
  ParsedAttributesWithRange Attrs(AttrFactory);
687
202k
  MaybeParseGNUAttributes(Attrs);
688
202k
  MaybeParseCXX11Attributes(Attrs);
689
690
  // Maybe this is an alias-declaration.
691
202k
  if (Tok.is(tok::equal)) {
692
73.8k
    if (InvalidDeclarator) {
693
0
      SkipUntil(tok::semi);
694
0
      return nullptr;
695
0
    }
696
697
    // If we had any misplaced attributes from earlier, this is where they
698
    // should have been written.
699
73.8k
    if (MisplacedAttrs.Range.isValid()) {
700
2
      Diag(MisplacedAttrs.Range.getBegin(), diag::err_attributes_not_allowed)
701
2
        << FixItHint::CreateInsertionFromRange(
702
2
               Tok.getLocation(),
703
2
               CharSourceRange::getTokenRange(MisplacedAttrs.Range))
704
2
        << FixItHint::CreateRemoval(MisplacedAttrs.Range);
705
2
      Attrs.takeAllFrom(MisplacedAttrs);
706
2
    }
707
708
73.8k
    Decl *DeclFromDeclSpec = nullptr;
709
73.8k
    Decl *AD = ParseAliasDeclarationAfterDeclarator(
710
73.8k
        TemplateInfo, UsingLoc, D, DeclEnd, AS, Attrs, &DeclFromDeclSpec);
711
73.8k
    return Actions.ConvertDeclToDeclGroup(AD, DeclFromDeclSpec);
712
73.8k
  }
713
714
  // C++11 attributes are not allowed on a using-declaration, but GNU ones
715
  // are.
716
129k
  ProhibitAttributes(MisplacedAttrs);
717
129k
  ProhibitAttributes(Attrs);
718
719
  // Diagnose an attempt to declare a templated using-declaration.
720
  // In C++11, alias-declarations can be templates:
721
  //   template <...> using id = type;
722
129k
  if (TemplateInfo.Kind) {
723
4
    SourceRange R = TemplateInfo.getSourceRange();
724
4
    Diag(UsingLoc, diag::err_templated_using_directive_declaration)
725
4
      << 1 /* declaration */ << R << FixItHint::CreateRemoval(R);
726
727
    // Unfortunately, we have to bail out instead of recovering by
728
    // ignoring the parameters, just in case the nested name specifier
729
    // depends on the parameters.
730
4
    return nullptr;
731
4
  }
732
733
129k
  SmallVector<Decl *, 8> DeclsInGroup;
734
129k
  while (true) {
735
    // Parse (optional) attributes (most likely GNU strong-using extension).
736
129k
    MaybeParseGNUAttributes(Attrs);
737
738
129k
    if (InvalidDeclarator)
739
21
      SkipUntil(tok::comma, tok::semi, StopBeforeMatch);
740
129k
    else {
741
      // "typename" keyword is allowed for identifiers only,
742
      // because it may be a type definition.
743
129k
      if (D.TypenameLoc.isValid() &&
744
381
          D.Name.getKind() != UnqualifiedIdKind::IK_Identifier) {
745
6
        Diag(D.Name.getSourceRange().getBegin(),
746
6
             diag::err_typename_identifiers_only)
747
6
            << FixItHint::CreateRemoval(SourceRange(D.TypenameLoc));
748
        // Proceed parsing, but discard the typename keyword.
749
6
        D.TypenameLoc = SourceLocation();
750
6
      }
751
752
129k
      Decl *UD = Actions.ActOnUsingDeclaration(getCurScope(), AS, UsingLoc,
753
129k
                                               D.TypenameLoc, D.SS, D.Name,
754
129k
                                               D.EllipsisLoc, Attrs);
755
129k
      if (UD)
756
128k
        DeclsInGroup.push_back(UD);
757
129k
    }
758
759
129k
    if (!TryConsumeToken(tok::comma))
760
129k
      break;
761
762
    // Parse another using-declarator.
763
8
    Attrs.clear();
764
8
    InvalidDeclarator = ParseUsingDeclarator(Context, D);
765
8
  }
766
767
129k
  if (DeclsInGroup.size() > 1)
768
2
    Diag(Tok.getLocation(), getLangOpts().CPlusPlus17 ?
769
2
         diag::warn_cxx17_compat_multi_using_declaration :
770
0
         diag::ext_multi_using_declaration);
771
772
  // Eat ';'.
773
129k
  DeclEnd = Tok.getLocation();
774
129k
  if (ExpectAndConsume(tok::semi, diag::err_expected_after,
775
0
                       !Attrs.empty() ? "attributes list"
776
129k
                                      : "using declaration"))
777
3
    SkipUntil(tok::semi);
778
779
129k
  return Actions.BuildDeclaratorGroup(DeclsInGroup);
780
129k
}
781
782
Decl *Parser::ParseAliasDeclarationAfterDeclarator(
783
    const ParsedTemplateInfo &TemplateInfo, SourceLocation UsingLoc,
784
    UsingDeclarator &D, SourceLocation &DeclEnd, AccessSpecifier AS,
785
73.8k
    ParsedAttributes &Attrs, Decl **OwnedType) {
786
73.8k
  if (ExpectAndConsume(tok::equal)) {
787
0
    SkipUntil(tok::semi);
788
0
    return nullptr;
789
0
  }
790
791
73.8k
  Diag(Tok.getLocation(), getLangOpts().CPlusPlus11 ?
792
73.7k
       diag::warn_cxx98_compat_alias_declaration :
793
27
       diag::ext_alias_declaration);
794
795
  // Type alias templates cannot be specialized.
796
73.8k
  int SpecKind = -1;
797
73.8k
  if (TemplateInfo.Kind == ParsedTemplateInfo::Template &&
798
44.1k
      D.Name.getKind() == UnqualifiedIdKind::IK_TemplateId)
799
1
    SpecKind = 0;
800
73.8k
  if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization)
801
1
    SpecKind = 1;
802
73.8k
  if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation)
803
1
    SpecKind = 2;
804
73.8k
  if (SpecKind != -1) {
805
3
    SourceRange Range;
806
3
    if (SpecKind == 0)
807
1
      Range = SourceRange(D.Name.TemplateId->LAngleLoc,
808
1
                          D.Name.TemplateId->RAngleLoc);
809
2
    else
810
2
      Range = TemplateInfo.getSourceRange();
811
3
    Diag(Range.getBegin(), diag::err_alias_declaration_specialization)
812
3
      << SpecKind << Range;
813
3
    SkipUntil(tok::semi);
814
3
    return nullptr;
815
3
  }
816
817
  // Name must be an identifier.
818
73.8k
  if (D.Name.getKind() != UnqualifiedIdKind::IK_Identifier) {
819
5
    Diag(D.Name.StartLocation, diag::err_alias_declaration_not_identifier);
820
    // No removal fixit: can't recover from this.
821
5
    SkipUntil(tok::semi);
822
5
    return nullptr;
823
73.8k
  } else if (D.TypenameLoc.isValid())
824
8
    Diag(D.TypenameLoc, diag::err_alias_declaration_not_identifier)
825
8
        << FixItHint::CreateRemoval(SourceRange(
826
8
               D.TypenameLoc,
827
4
               D.SS.isNotEmpty() ? D.SS.getEndLoc() : D.TypenameLoc));
828
73.8k
  else if (D.SS.isNotEmpty())
829
4
    Diag(D.SS.getBeginLoc(), diag::err_alias_declaration_not_identifier)
830
4
      << FixItHint::CreateRemoval(D.SS.getRange());
831
73.8k
  if (D.EllipsisLoc.isValid())
832
0
    Diag(D.EllipsisLoc, diag::err_alias_declaration_pack_expansion)
833
0
      << FixItHint::CreateRemoval(SourceRange(D.EllipsisLoc));
834
835
73.8k
  Decl *DeclFromDeclSpec = nullptr;
836
73.8k
  TypeResult TypeAlias =
837
73.8k
      ParseTypeName(nullptr,
838
44.1k
                    TemplateInfo.Kind ? DeclaratorContext::AliasTemplate
839
29.6k
                                      : DeclaratorContext::AliasDecl,
840
73.8k
                    AS, &DeclFromDeclSpec, &Attrs);
841
73.8k
  if (OwnedType)
842
73.8k
    *OwnedType = DeclFromDeclSpec;
843
844
  // Eat ';'.
845
73.8k
  DeclEnd = Tok.getLocation();
846
73.8k
  if (ExpectAndConsume(tok::semi, diag::err_expected_after,
847
30.0k
                       !Attrs.empty() ? "attributes list"
848
43.7k
                                      : "alias declaration"))
849
8
    SkipUntil(tok::semi);
850
851
73.8k
  TemplateParameterLists *TemplateParams = TemplateInfo.TemplateParams;
852
73.8k
  MultiTemplateParamsArg TemplateParamsArg(
853
44.1k
    TemplateParams ? TemplateParams->data() : 
nullptr29.6k
,
854
44.1k
    TemplateParams ? TemplateParams->size() : 
029.6k
);
855
73.8k
  return Actions.ActOnAliasDeclaration(getCurScope(), AS, TemplateParamsArg,
856
73.8k
                                       UsingLoc, D.Name, Attrs, TypeAlias,
857
73.8k
                                       DeclFromDeclSpec);
858
73.8k
}
859
860
/// ParseStaticAssertDeclaration - Parse C++0x or C11 static_assert-declaration.
861
///
862
/// [C++0x] static_assert-declaration:
863
///           static_assert ( constant-expression  ,  string-literal  ) ;
864
///
865
/// [C11]   static_assert-declaration:
866
///           _Static_assert ( constant-expression  ,  string-literal  ) ;
867
///
868
42.9k
Decl *Parser::ParseStaticAssertDeclaration(SourceLocation &DeclEnd){
869
42.9k
  assert(Tok.isOneOf(tok::kw_static_assert, tok::kw__Static_assert) &&
870
42.9k
         "Not a static_assert declaration");
871
872
42.9k
  if (Tok.is(tok::kw__Static_assert) && 
!getLangOpts().C112.68k
)
873
2.12k
    Diag(Tok, diag::ext_c11_feature) << Tok.getName();
874
42.9k
  if (Tok.is(tok::kw_static_assert))
875
40.2k
    Diag(Tok, diag::warn_cxx98_compat_static_assert);
876
877
42.9k
  SourceLocation StaticAssertLoc = ConsumeToken();
878
879
42.9k
  BalancedDelimiterTracker T(*this, tok::l_paren);
880
42.9k
  if (T.consumeOpen()) {
881
0
    Diag(Tok, diag::err_expected) << tok::l_paren;
882
0
    SkipMalformedDecl();
883
0
    return nullptr;
884
0
  }
885
886
42.9k
  EnterExpressionEvaluationContext ConstantEvaluated(
887
42.9k
      Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
888
42.9k
  ExprResult AssertExpr(ParseConstantExpressionInExprEvalContext());
889
42.9k
  if (AssertExpr.isInvalid()) {
890
89
    SkipMalformedDecl();
891
89
    return nullptr;
892
89
  }
893
894
42.8k
  ExprResult AssertMessage;
895
42.8k
  if (Tok.is(tok::r_paren)) {
896
4.06k
    Diag(Tok, getLangOpts().CPlusPlus17
897
4.04k
                  ? diag::warn_cxx14_compat_static_assert_no_message
898
14
                  : diag::ext_static_assert_no_message)
899
4.06k
      << (getLangOpts().CPlusPlus17
900
4.04k
              ? FixItHint()
901
14
              : FixItHint::CreateInsertion(Tok.getLocation(), ", \"\""));
902
38.8k
  } else {
903
38.8k
    if (ExpectAndConsume(tok::comma)) {
904
0
      SkipUntil(tok::semi);
905
0
      return nullptr;
906
0
    }
907
908
38.8k
    if (!isTokenStringLiteral()) {
909
3
      Diag(Tok, diag::err_expected_string_literal)
910
3
        << /*Source='static_assert'*/1;
911
3
      SkipMalformedDecl();
912
3
      return nullptr;
913
3
    }
914
915
38.8k
    AssertMessage = ParseStringLiteralExpression();
916
38.8k
    if (AssertMessage.isInvalid()) {
917
1
      SkipMalformedDecl();
918
1
      return nullptr;
919
1
    }
920
42.8k
  }
921
922
42.8k
  T.consumeClose();
923
924
42.8k
  DeclEnd = Tok.getLocation();
925
42.8k
  ExpectAndConsumeSemi(diag::err_expected_semi_after_static_assert);
926
927
42.8k
  return Actions.ActOnStaticAssertDeclaration(StaticAssertLoc,
928
42.8k
                                              AssertExpr.get(),
929
42.8k
                                              AssertMessage.get(),
930
42.8k
                                              T.getCloseLocation());
931
42.8k
}
932
933
/// ParseDecltypeSpecifier - Parse a C++11 decltype specifier.
934
///
935
/// 'decltype' ( expression )
936
/// 'decltype' ( 'auto' )      [C++1y]
937
///
938
67.4k
SourceLocation Parser::ParseDecltypeSpecifier(DeclSpec &DS) {
939
67.4k
  assert(Tok.isOneOf(tok::kw_decltype, tok::annot_decltype)
940
67.4k
           && "Not a decltype specifier");
941
942
67.4k
  ExprResult Result;
943
67.4k
  SourceLocation StartLoc = Tok.getLocation();
944
67.4k
  SourceLocation EndLoc;
945
946
67.4k
  if (Tok.is(tok::annot_decltype)) {
947
33.2k
    Result = getExprAnnotation(Tok);
948
33.2k
    EndLoc = Tok.getAnnotationEndLoc();
949
33.2k
    ConsumeAnnotationToken();
950
33.2k
    if (Result.isInvalid()) {
951
42
      DS.SetTypeSpecError();
952
42
      return EndLoc;
953
42
    }
954
34.2k
  } else {
955
34.2k
    if (Tok.getIdentifierInfo()->isStr("decltype"))
956
34.2k
      Diag(Tok, diag::warn_cxx98_compat_decltype);
957
958
34.2k
    ConsumeToken();
959
960
34.2k
    BalancedDelimiterTracker T(*this, tok::l_paren);
961
34.2k
    if (T.expectAndConsume(diag::err_expected_lparen_after,
962
1
                           "decltype", tok::r_paren)) {
963
1
      DS.SetTypeSpecError();
964
1
      return T.getOpenLocation() == Tok.getLocation() ?
965
1
             StartLoc : 
T.getOpenLocation()0
;
966
1
    }
967
968
    // Check for C++1y 'decltype(auto)'.
969
34.2k
    if (Tok.is(tok::kw_auto)) {
970
      // No need to disambiguate here: an expression can't start with 'auto',
971
      // because the typename-specifier in a function-style cast operation can't
972
      // be 'auto'.
973
267
      Diag(Tok.getLocation(),
974
267
           getLangOpts().CPlusPlus14
975
250
             ? diag::warn_cxx11_compat_decltype_auto_type_specifier
976
17
             : diag::ext_decltype_auto_type_specifier);
977
267
      ConsumeToken();
978
33.9k
    } else {
979
      // Parse the expression
980
981
      // C++11 [dcl.type.simple]p4:
982
      //   The operand of the decltype specifier is an unevaluated operand.
983
33.9k
      EnterExpressionEvaluationContext Unevaluated(
984
33.9k
          Actions, Sema::ExpressionEvaluationContext::Unevaluated, nullptr,
985
33.9k
          Sema::ExpressionEvaluationContextRecord::EK_Decltype);
986
33.9k
      Result = Actions.CorrectDelayedTyposInExpr(
987
33.9k
          ParseExpression(), /*InitDecl=*/nullptr,
988
33.9k
          /*RecoverUncorrectedTypos=*/false,
989
9
          [](Expr *E) { return E->hasPlaceholderType() ? 
ExprError()3
:
E6
; });
990
33.9k
      if (Result.isInvalid()) {
991
37
        DS.SetTypeSpecError();
992
37
        if (SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch)) {
993
34
          EndLoc = ConsumeParen();
994
3
        } else {
995
3
          if (PP.isBacktrackEnabled() && 
Tok.is(tok::semi)1
) {
996
            // Backtrack to get the location of the last token before the semi.
997
1
            PP.RevertCachedTokens(2);
998
1
            ConsumeToken(); // the semi.
999
1
            EndLoc = ConsumeAnyToken();
1000
1
            assert(Tok.is(tok::semi));
1001
2
          } else {
1002
2
            EndLoc = Tok.getLocation();
1003
2
          }
1004
3
        }
1005
37
        return EndLoc;
1006
37
      }
1007
1008
33.9k
      Result = Actions.ActOnDecltypeExpression(Result.get());
1009
33.9k
    }
1010
1011
    // Match the ')'
1012
34.2k
    T.consumeClose();
1013
34.2k
    if (T.getCloseLocation().isInvalid()) {
1014
0
      DS.SetTypeSpecError();
1015
      // FIXME: this should return the location of the last token
1016
      //        that was consumed (by "consumeClose()")
1017
0
      return T.getCloseLocation();
1018
0
    }
1019
1020
34.2k
    if (Result.isInvalid()) {
1021
9
      DS.SetTypeSpecError();
1022
9
      return T.getCloseLocation();
1023
9
    }
1024
1025
34.2k
    EndLoc = T.getCloseLocation();
1026
34.2k
  }
1027
67.3k
  assert(!Result.isInvalid());
1028
1029
67.3k
  const char *PrevSpec = nullptr;
1030
67.3k
  unsigned DiagID;
1031
67.3k
  const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
1032
  // Check for duplicate type specifiers (e.g. "int decltype(a)").
1033
67.3k
  if (Result.get()
1034
66.8k
        ? DS.SetTypeSpecType(DeclSpec::TST_decltype, StartLoc, PrevSpec,
1035
66.8k
                             DiagID, Result.get(), Policy)
1036
530
        : DS.SetTypeSpecType(DeclSpec::TST_decltype_auto, StartLoc, PrevSpec,
1037
0
                             DiagID, Policy)) {
1038
0
    Diag(StartLoc, DiagID) << PrevSpec;
1039
0
    DS.SetTypeSpecError();
1040
0
  }
1041
67.3k
  return EndLoc;
1042
67.4k
}
1043
1044
void Parser::AnnotateExistingDecltypeSpecifier(const DeclSpec& DS,
1045
                                               SourceLocation StartLoc,
1046
33.2k
                                               SourceLocation EndLoc) {
1047
  // make sure we have a token we can turn into an annotation token
1048
33.2k
  if (PP.isBacktrackEnabled()) {
1049
174
    PP.RevertCachedTokens(1);
1050
174
    if (DS.getTypeSpecType() == TST_error) {
1051
      // We encountered an error in parsing 'decltype(...)' so lets annotate all
1052
      // the tokens in the backtracking cache - that we likely had to skip over
1053
      // to get to a token that allows us to resume parsing, such as a
1054
      // semi-colon.
1055
3
      EndLoc = PP.getLastCachedTokenLocation();
1056
3
    }
1057
174
  }
1058
33.0k
  else
1059
33.0k
    PP.EnterToken(Tok, /*IsReinject*/true);
1060
1061
33.2k
  Tok.setKind(tok::annot_decltype);
1062
33.2k
  setExprAnnotation(Tok,
1063
32.9k
                    DS.getTypeSpecType() == TST_decltype ? DS.getRepAsExpr() :
1064
306
                    DS.getTypeSpecType() == TST_decltype_auto ? 
ExprResult()263
:
1065
43
                    ExprError());
1066
33.2k
  Tok.setAnnotationEndLoc(EndLoc);
1067
33.2k
  Tok.setLocation(StartLoc);
1068
33.2k
  PP.AnnotateCachedTokens(Tok);
1069
33.2k
}
1070
1071
497
void Parser::ParseUnderlyingTypeSpecifier(DeclSpec &DS) {
1072
497
  assert(Tok.is(tok::kw___underlying_type) &&
1073
497
         "Not an underlying type specifier");
1074
1075
497
  SourceLocation StartLoc = ConsumeToken();
1076
497
  BalancedDelimiterTracker T(*this, tok::l_paren);
1077
497
  if (T.expectAndConsume(diag::err_expected_lparen_after,
1078
0
                       "__underlying_type", tok::r_paren)) {
1079
0
    return;
1080
0
  }
1081
1082
497
  TypeResult Result = ParseTypeName();
1083
497
  if (Result.isInvalid()) {
1084
0
    SkipUntil(tok::r_paren, StopAtSemi);
1085
0
    return;
1086
0
  }
1087
1088
  // Match the ')'
1089
497
  T.consumeClose();
1090
497
  if (T.getCloseLocation().isInvalid())
1091
0
    return;
1092
1093
497
  const char *PrevSpec = nullptr;
1094
497
  unsigned DiagID;
1095
497
  if (DS.SetTypeSpecType(DeclSpec::TST_underlyingType, StartLoc, PrevSpec,
1096
497
                         DiagID, Result.get(),
1097
497
                         Actions.getASTContext().getPrintingPolicy()))
1098
0
    Diag(StartLoc, DiagID) << PrevSpec;
1099
497
  DS.setTypeofParensRange(T.getRange());
1100
497
}
1101
1102
/// ParseBaseTypeSpecifier - Parse a C++ base-type-specifier which is either a
1103
/// class name or decltype-specifier. Note that we only check that the result
1104
/// names a type; semantic analysis will need to verify that the type names a
1105
/// class. The result is either a type or null, depending on whether a type
1106
/// name was found.
1107
///
1108
///       base-type-specifier: [C++11 class.derived]
1109
///         class-or-decltype
1110
///       class-or-decltype: [C++11 class.derived]
1111
///         nested-name-specifier[opt] class-name
1112
///         decltype-specifier
1113
///       class-name: [C++ class.name]
1114
///         identifier
1115
///         simple-template-id
1116
///
1117
/// In C++98, instead of base-type-specifier, we have:
1118
///
1119
///         ::[opt] nested-name-specifier[opt] class-name
1120
TypeResult Parser::ParseBaseTypeSpecifier(SourceLocation &BaseLoc,
1121
193k
                                          SourceLocation &EndLocation) {
1122
  // Ignore attempts to use typename
1123
193k
  if (Tok.is(tok::kw_typename)) {
1124
1
    Diag(Tok, diag::err_expected_class_name_not_template)
1125
1
      << FixItHint::CreateRemoval(Tok.getLocation());
1126
1
    ConsumeToken();
1127
1
  }
1128
1129
  // Parse optional nested-name-specifier
1130
193k
  CXXScopeSpec SS;
1131
193k
  if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
1132
193k
                                     /*ObjectHadErrors=*/false,
1133
193k
                                     /*EnteringContext=*/false))
1134
6
    return true;
1135
1136
193k
  BaseLoc = Tok.getLocation();
1137
1138
  // Parse decltype-specifier
1139
  // tok == kw_decltype is just error recovery, it can only happen when SS
1140
  // isn't empty
1141
193k
  if (Tok.isOneOf(tok::kw_decltype, tok::annot_decltype)) {
1142
17
    if (SS.isNotEmpty())
1143
2
      Diag(SS.getBeginLoc(), diag::err_unexpected_scope_on_base_decltype)
1144
2
        << FixItHint::CreateRemoval(SS.getRange());
1145
    // Fake up a Declarator to use with ActOnTypeName.
1146
17
    DeclSpec DS(AttrFactory);
1147
1148
17
    EndLocation = ParseDecltypeSpecifier(DS);
1149
1150
17
    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
1151
17
    return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
1152
17
  }
1153
1154
  // Check whether we have a template-id that names a type.
1155
193k
  if (Tok.is(tok::annot_template_id)) {
1156
120k
    TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
1157
120k
    if (TemplateId->mightBeType()) {
1158
120k
      AnnotateTemplateIdTokenAsType(SS, /*IsClassName*/true);
1159
1160
120k
      assert(Tok.is(tok::annot_typename) && "template-id -> type failed");
1161
120k
      TypeResult Type = getTypeAnnotation(Tok);
1162
120k
      EndLocation = Tok.getAnnotationEndLoc();
1163
120k
      ConsumeAnnotationToken();
1164
120k
      return Type;
1165
120k
    }
1166
1167
    // Fall through to produce an error below.
1168
120k
  }
1169
1170
73.4k
  if (Tok.isNot(tok::identifier)) {
1171
7
    Diag(Tok, diag::err_expected_class_name);
1172
7
    return true;
1173
7
  }
1174
1175
73.4k
  IdentifierInfo *Id = Tok.getIdentifierInfo();
1176
73.4k
  SourceLocation IdLoc = ConsumeToken();
1177
1178
73.4k
  if (Tok.is(tok::less)) {
1179
    // It looks the user intended to write a template-id here, but the
1180
    // template-name was wrong. Try to fix that.
1181
    // FIXME: Invoke ParseOptionalCXXScopeSpecifier in a "'template' is neither
1182
    // required nor permitted" mode, and do this there.
1183
4
    TemplateNameKind TNK = TNK_Non_template;
1184
4
    TemplateTy Template;
1185
4
    if (!Actions.DiagnoseUnknownTemplateName(*Id, IdLoc, getCurScope(),
1186
4
                                             &SS, Template, TNK)) {
1187
4
      Diag(IdLoc, diag::err_unknown_template_name)
1188
4
        << Id;
1189
4
    }
1190
1191
    // Form the template name
1192
4
    UnqualifiedId TemplateName;
1193
4
    TemplateName.setIdentifier(Id, IdLoc);
1194
1195
    // Parse the full template-id, then turn it into a type.
1196
4
    if (AnnotateTemplateIdToken(Template, TNK, SS, SourceLocation(),
1197
4
                                TemplateName))
1198
1
      return true;
1199
3
    if (Tok.is(tok::annot_template_id) &&
1200
3
        takeTemplateIdAnnotation(Tok)->mightBeType())
1201
3
      AnnotateTemplateIdTokenAsType(SS, /*IsClassName*/true);
1202
1203
    // If we didn't end up with a typename token, there's nothing more we
1204
    // can do.
1205
3
    if (Tok.isNot(tok::annot_typename))
1206
0
      return true;
1207
1208
    // Retrieve the type from the annotation token, consume that token, and
1209
    // return.
1210
3
    EndLocation = Tok.getAnnotationEndLoc();
1211
3
    TypeResult Type = getTypeAnnotation(Tok);
1212
3
    ConsumeAnnotationToken();
1213
3
    return Type;
1214
3
  }
1215
1216
  // We have an identifier; check whether it is actually a type.
1217
73.4k
  IdentifierInfo *CorrectedII = nullptr;
1218
73.4k
  ParsedType Type = Actions.getTypeName(
1219
73.4k
      *Id, IdLoc, getCurScope(), &SS, /*isClassName=*/true, false, nullptr,
1220
73.4k
      /*IsCtorOrDtorName=*/false,
1221
73.4k
      /*WantNontrivialTypeSourceInfo=*/true,
1222
73.4k
      /*IsClassTemplateDeductionContext*/ false, &CorrectedII);
1223
73.4k
  if (!Type) {
1224
15
    Diag(IdLoc, diag::err_expected_class_name);
1225
15
    return true;
1226
15
  }
1227
1228
  // Consume the identifier.
1229
73.4k
  EndLocation = IdLoc;
1230
1231
  // Fake up a Declarator to use with ActOnTypeName.
1232
73.4k
  DeclSpec DS(AttrFactory);
1233
73.4k
  DS.SetRangeStart(IdLoc);
1234
73.4k
  DS.SetRangeEnd(EndLocation);
1235
73.4k
  DS.getTypeSpecScope() = SS;
1236
1237
73.4k
  const char *PrevSpec = nullptr;
1238
73.4k
  unsigned DiagID;
1239
73.4k
  DS.SetTypeSpecType(TST_typename, IdLoc, PrevSpec, DiagID, Type,
1240
73.4k
                     Actions.getASTContext().getPrintingPolicy());
1241
1242
73.4k
  Declarator DeclaratorInfo(DS, DeclaratorContext::TypeName);
1243
73.4k
  return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
1244
73.4k
}
1245
1246
58
void Parser::ParseMicrosoftInheritanceClassAttributes(ParsedAttributes &attrs) {
1247
116
  while (Tok.isOneOf(tok::kw___single_inheritance,
1248
116
                     tok::kw___multiple_inheritance,
1249
58
                     tok::kw___virtual_inheritance)) {
1250
58
    IdentifierInfo *AttrName = Tok.getIdentifierInfo();
1251
58
    SourceLocation AttrNameLoc = ConsumeToken();
1252
58
    attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
1253
58
                 ParsedAttr::AS_Keyword);
1254
58
  }
1255
58
}
1256
1257
/// Determine whether the following tokens are valid after a type-specifier
1258
/// which could be a standalone declaration. This will conservatively return
1259
/// true if there's any doubt, and is appropriate for insert-';' fixits.
1260
1.37M
bool Parser::isValidAfterTypeSpecifier(bool CouldBeBitfield) {
1261
  // This switch enumerates the valid "follow" set for type-specifiers.
1262
1.37M
  switch (Tok.getKind()) {
1263
148
  default: break;
1264
1.02M
  case tok::semi:               // struct foo {...} ;
1265
1.02M
  case tok::star:               // struct foo {...} *         P;
1266
1.02M
  case tok::amp:                // struct foo {...} &         R = ...
1267
1.02M
  case tok::ampamp:             // struct foo {...} &&        R = ...
1268
1.37M
  case tok::identifier:         // struct foo {...} V         ;
1269
1.37M
  case tok::r_paren:            //(struct foo {...} )         {4}
1270
1.37M
  case tok::coloncolon:         // struct foo {...} ::        a::b;
1271
1.37M
  case tok::annot_cxxscope:     // struct foo {...} a::       b;
1272
1.37M
  case tok::annot_typename:     // struct foo {...} a         ::b;
1273
1.37M
  case tok::annot_template_id:  // struct foo {...} a<int>    ::b;
1274
1.37M
  case tok::kw_decltype:        // struct foo {...} decltype  (a)::b;
1275
1.37M
  case tok::l_paren:            // struct foo {...} (         x);
1276
1.37M
  case tok::comma:              // __builtin_offsetof(struct foo{...} ,
1277
1.37M
  case tok::kw_operator:        // struct foo       operator  ++() {...}
1278
1.37M
  case tok::kw___declspec:      // struct foo {...} __declspec(...)
1279
1.37M
  case tok::l_square:           // void f(struct f  [         3])
1280
1.37M
  case tok::ellipsis:           // void f(struct f  ...       [Ns])
1281
  // FIXME: we should emit semantic diagnostic when declaration
1282
  // attribute is in type attribute position.
1283
1.37M
  case tok::kw___attribute:     // struct foo __attribute__((used)) x;
1284
1.37M
  case tok::annot_pragma_pack:  // struct foo {...} _Pragma(pack(pop));
1285
  // struct foo {...} _Pragma(section(...));
1286
1.37M
  case tok::annot_pragma_ms_pragma:
1287
  // struct foo {...} _Pragma(vtordisp(pop));
1288
1.37M
  case tok::annot_pragma_ms_vtordisp:
1289
  // struct foo {...} _Pragma(pointers_to_members(...));
1290
1.37M
  case tok::annot_pragma_ms_pointers_to_members:
1291
1.37M
    return true;
1292
4
  case tok::colon:
1293
4
    return CouldBeBitfield ||   // enum E { ... }   :         2;
1294
3
           ColonIsSacred;       // _Generic(..., enum E :     2);
1295
  // Microsoft compatibility
1296
1
  case tok::kw___cdecl:         // struct foo {...} __cdecl      x;
1297
1
  case tok::kw___fastcall:      // struct foo {...} __fastcall   x;
1298
1
  case tok::kw___stdcall:       // struct foo {...} __stdcall    x;
1299
1
  case tok::kw___thiscall:      // struct foo {...} __thiscall   x;
1300
1
  case tok::kw___vectorcall:    // struct foo {...} __vectorcall x;
1301
    // We will diagnose these calling-convention specifiers on non-function
1302
    // declarations later, so claim they are valid after a type specifier.
1303
1
    return getLangOpts().MicrosoftExt;
1304
  // Type qualifiers
1305
23
  case tok::kw_const:           // struct foo {...} const     x;
1306
29
  case tok::kw_volatile:        // struct foo {...} volatile  x;
1307
29
  case tok::kw_restrict:        // struct foo {...} restrict  x;
1308
31
  case tok::kw__Atomic:         // struct foo {...} _Atomic   x;
1309
34
  case tok::kw___unaligned:     // struct foo {...} __unaligned *x;
1310
  // Function specifiers
1311
  // Note, no 'explicit'. An explicit function must be either a conversion
1312
  // operator or a constructor. Either way, it can't have a return type.
1313
36
  case tok::kw_inline:          // struct foo       inline    f();
1314
39
  case tok::kw_virtual:         // struct foo       virtual   f();
1315
42
  case tok::kw_friend:          // struct foo       friend    f();
1316
  // Storage-class specifiers
1317
47
  case tok::kw_static:          // struct foo {...} static    x;
1318
128
  case tok::kw_extern:          // struct foo {...} extern    x;
1319
138
  case tok::kw_typedef:         // struct foo {...} typedef   x;
1320
138
  case tok::kw_register:        // struct foo {...} register  x;
1321
138
  case tok::kw_auto:            // struct foo {...} auto      x;
1322
140
  case tok::kw_mutable:         // struct foo {...} mutable   x;
1323
141
  case tok::kw_thread_local:    // struct foo {...} thread_local x;
1324
199
  case tok::kw_constexpr:       // struct foo {...} constexpr x;
1325
199
  case tok::kw_consteval:       // struct foo {...} consteval x;
1326
199
  case tok::kw_constinit:       // struct foo {...} constinit x;
1327
    // As shown above, type qualifiers and storage class specifiers absolutely
1328
    // can occur after class specifiers according to the grammar.  However,
1329
    // almost no one actually writes code like this.  If we see one of these,
1330
    // it is much more likely that someone missed a semi colon and the
1331
    // type/storage class specifier we're seeing is part of the *next*
1332
    // intended declaration, as in:
1333
    //
1334
    //   struct foo { ... }
1335
    //   typedef int X;
1336
    //
1337
    // We'd really like to emit a missing semicolon error instead of emitting
1338
    // an error on the 'int' saying that you can't have two type specifiers in
1339
    // the same declaration of X.  Because of this, we look ahead past this
1340
    // token to see if it's a type specifier.  If so, we know the code is
1341
    // otherwise invalid, so we can produce the expected semi error.
1342
199
    if (!isKnownToBeTypeSpecifier(NextToken()))
1343
197
      return true;
1344
2
    break;
1345
6
  case tok::r_brace:  // struct bar { struct foo {...} }
1346
    // Missing ';' at end of struct is accepted as an extension in C mode.
1347
6
    if (!getLangOpts().CPlusPlus)
1348
2
      return true;
1349
4
    break;
1350
3
  case tok::greater:
1351
    // template<class T = class X>
1352
3
    return getLangOpts().CPlusPlus;
1353
154
  }
1354
154
  return false;
1355
154
}
1356
1357
/// ParseClassSpecifier - Parse a C++ class-specifier [C++ class] or
1358
/// elaborated-type-specifier [C++ dcl.type.elab]; we can't tell which
1359
/// until we reach the start of a definition or see a token that
1360
/// cannot start a definition.
1361
///
1362
///       class-specifier: [C++ class]
1363
///         class-head '{' member-specification[opt] '}'
1364
///         class-head '{' member-specification[opt] '}' attributes[opt]
1365
///       class-head:
1366
///         class-key identifier[opt] base-clause[opt]
1367
///         class-key nested-name-specifier identifier base-clause[opt]
1368
///         class-key nested-name-specifier[opt] simple-template-id
1369
///                          base-clause[opt]
1370
/// [GNU]   class-key attributes[opt] identifier[opt] base-clause[opt]
1371
/// [GNU]   class-key attributes[opt] nested-name-specifier
1372
///                          identifier base-clause[opt]
1373
/// [GNU]   class-key attributes[opt] nested-name-specifier[opt]
1374
///                          simple-template-id base-clause[opt]
1375
///       class-key:
1376
///         'class'
1377
///         'struct'
1378
///         'union'
1379
///
1380
///       elaborated-type-specifier: [C++ dcl.type.elab]
1381
///         class-key ::[opt] nested-name-specifier[opt] identifier
1382
///         class-key ::[opt] nested-name-specifier[opt] 'template'[opt]
1383
///                          simple-template-id
1384
///
1385
///  Note that the C++ class-specifier and elaborated-type-specifier,
1386
///  together, subsume the C99 struct-or-union-specifier:
1387
///
1388
///       struct-or-union-specifier: [C99 6.7.2.1]
1389
///         struct-or-union identifier[opt] '{' struct-contents '}'
1390
///         struct-or-union identifier
1391
/// [GNU]   struct-or-union attributes[opt] identifier[opt] '{' struct-contents
1392
///                                                         '}' attributes[opt]
1393
/// [GNU]   struct-or-union attributes[opt] identifier
1394
///       struct-or-union:
1395
///         'struct'
1396
///         'union'
1397
void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind,
1398
                                 SourceLocation StartLoc, DeclSpec &DS,
1399
                                 const ParsedTemplateInfo &TemplateInfo,
1400
                                 AccessSpecifier AS,
1401
                                 bool EnteringContext, DeclSpecContext DSC,
1402
1.94M
                                 ParsedAttributesWithRange &Attributes) {
1403
1.94M
  DeclSpec::TST TagType;
1404
1.94M
  if (TagTokKind == tok::kw_struct)
1405
1.73M
    TagType = DeclSpec::TST_struct;
1406
206k
  else if (TagTokKind == tok::kw___interface)
1407
32
    TagType = DeclSpec::TST_interface;
1408
206k
  else if (TagTokKind == tok::kw_class)
1409
152k
    TagType = DeclSpec::TST_class;
1410
54.5k
  else {
1411
54.5k
    assert(TagTokKind == tok::kw_union && "Not a class specifier");
1412
54.5k
    TagType = DeclSpec::TST_union;
1413
54.5k
  }
1414
1415
1.94M
  if (Tok.is(tok::code_completion)) {
1416
    // Code completion for a struct, class, or union name.
1417
11
    Actions.CodeCompleteTag(getCurScope(), TagType);
1418
11
    return cutOffParsing();
1419
11
  }
1420
1421
  // C++03 [temp.explicit] 14.7.2/8:
1422
  //   The usual access checking rules do not apply to names used to specify
1423
  //   explicit instantiations.
1424
  //
1425
  // As an extension we do not perform access checking on the names used to
1426
  // specify explicit specializations either. This is important to allow
1427
  // specializing traits classes for private types.
1428
  //
1429
  // Note that we don't suppress if this turns out to be an elaborated
1430
  // type specifier.
1431
1.94M
  bool shouldDelayDiagsInTag =
1432
1.94M
    (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
1433
1.93M
     TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
1434
1.94M
  SuppressAccessChecks diagsFromTag(*this, shouldDelayDiagsInTag);
1435
1436
1.94M
  ParsedAttributesWithRange attrs(AttrFactory);
1437
  // If attributes exist after tag, parse them.
1438
1.94M
  MaybeParseGNUAttributes(attrs);
1439
1.94M
  MaybeParseMicrosoftDeclSpecs(attrs);
1440
1441
  // Parse inheritance specifiers.
1442
1.94M
  if (Tok.isOneOf(tok::kw___single_inheritance,
1443
1.94M
                  tok::kw___multiple_inheritance,
1444
1.94M
                  tok::kw___virtual_inheritance))
1445
58
    ParseMicrosoftInheritanceClassAttributes(attrs);
1446
1447
  // If C++0x attributes exist here, parse them.
1448
  // FIXME: Are we consistent with the ordering of parsing of different
1449
  // styles of attributes?
1450
1.94M
  MaybeParseCXX11Attributes(attrs);
1451
1452
  // Source location used by FIXIT to insert misplaced
1453
  // C++11 attributes
1454
1.94M
  SourceLocation AttrFixitLoc = Tok.getLocation();
1455
1456
1.94M
  if (TagType == DeclSpec::TST_struct &&
1457
1.73M
      Tok.isNot(tok::identifier) &&
1458
203k
      !Tok.isAnnotation() &&
1459
203k
      Tok.getIdentifierInfo() &&
1460
115
      Tok.isOneOf(tok::kw___is_abstract,
1461
115
                  tok::kw___is_aggregate,
1462
115
                  tok::kw___is_arithmetic,
1463
115
                  tok::kw___is_array,
1464
115
                  tok::kw___is_assignable,
1465
115
                  tok::kw___is_base_of,
1466
115
                  tok::kw___is_class,
1467
115
                  tok::kw___is_complete_type,
1468
115
                  tok::kw___is_compound,
1469
115
                  tok::kw___is_const,
1470
115
                  tok::kw___is_constructible,
1471
115
                  tok::kw___is_convertible,
1472
115
                  tok::kw___is_convertible_to,
1473
115
                  tok::kw___is_destructible,
1474
115
                  tok::kw___is_empty,
1475
115
                  tok::kw___is_enum,
1476
115
                  tok::kw___is_floating_point,
1477
115
                  tok::kw___is_final,
1478
115
                  tok::kw___is_function,
1479
115
                  tok::kw___is_fundamental,
1480
115
                  tok::kw___is_integral,
1481
115
                  tok::kw___is_interface_class,
1482
115
                  tok::kw___is_literal,
1483
115
                  tok::kw___is_lvalue_expr,
1484
115
                  tok::kw___is_lvalue_reference,
1485
115
                  tok::kw___is_member_function_pointer,
1486
115
                  tok::kw___is_member_object_pointer,
1487
115
                  tok::kw___is_member_pointer,
1488
115
                  tok::kw___is_nothrow_assignable,
1489
115
                  tok::kw___is_nothrow_constructible,
1490
115
                  tok::kw___is_nothrow_destructible,
1491
115
                  tok::kw___is_object,
1492
115
                  tok::kw___is_pod,
1493
115
                  tok::kw___is_pointer,
1494
115
                  tok::kw___is_polymorphic,
1495
115
                  tok::kw___is_reference,
1496
115
                  tok::kw___is_rvalue_expr,
1497
115
                  tok::kw___is_rvalue_reference,
1498
115
                  tok::kw___is_same,
1499
115
                  tok::kw___is_scalar,
1500
115
                  tok::kw___is_sealed,
1501
115
                  tok::kw___is_signed,
1502
115
                  tok::kw___is_standard_layout,
1503
115
                  tok::kw___is_trivial,
1504
115
                  tok::kw___is_trivially_assignable,
1505
115
                  tok::kw___is_trivially_constructible,
1506
115
                  tok::kw___is_trivially_copyable,
1507
115
                  tok::kw___is_union,
1508
115
                  tok::kw___is_unsigned,
1509
115
                  tok::kw___is_void,
1510
115
                  tok::kw___is_volatile))
1511
    // GNU libstdc++ 4.2 and libc++ use certain intrinsic names as the
1512
    // name of struct templates, but some are keywords in GCC >= 4.3
1513
    // and Clang. Therefore, when we see the token sequence "struct
1514
    // X", make X into a normal identifier rather than a keyword, to
1515
    // allow libstdc++ 4.2 and libc++ to work properly.
1516
113
    TryKeywordIdentFallback(true);
1517
1518
1.94M
  struct PreserveAtomicIdentifierInfoRAII {
1519
1.94M
    PreserveAtomicIdentifierInfoRAII(Token &Tok, bool Enabled)
1520
1.94M
        : AtomicII(nullptr) {
1521
1.94M
      if (!Enabled)
1522
1.94M
        return;
1523
2
      assert(Tok.is(tok::kw__Atomic));
1524
2
      AtomicII = Tok.getIdentifierInfo();
1525
2
      AtomicII->revertTokenIDToIdentifier();
1526
2
      Tok.setKind(tok::identifier);
1527
2
    }
1528
1.94M
    ~PreserveAtomicIdentifierInfoRAII() {
1529
1.94M
      if (!AtomicII)
1530
1.94M
        return;
1531
2
      AtomicII->revertIdentifierToTokenID(tok::kw__Atomic);
1532
2
    }
1533
1.94M
    IdentifierInfo *AtomicII;
1534
1.94M
  };
1535
1536
  // HACK: MSVC doesn't consider _Atomic to be a keyword and its STL
1537
  // implementation for VS2013 uses _Atomic as an identifier for one of the
1538
  // classes in <atomic>.  When we are parsing 'struct _Atomic', don't consider
1539
  // '_Atomic' to be a keyword.  We are careful to undo this so that clang can
1540
  // use '_Atomic' in its own header files.
1541
1.94M
  bool ShouldChangeAtomicToIdentifier = getLangOpts().MSVCCompat &&
1542
9.66k
                                        Tok.is(tok::kw__Atomic) &&
1543
2
                                        TagType == DeclSpec::TST_struct;
1544
1.94M
  PreserveAtomicIdentifierInfoRAII AtomicTokenGuard(
1545
1.94M
      Tok, ShouldChangeAtomicToIdentifier);
1546
1547
  // Parse the (optional) nested-name-specifier.
1548
1.94M
  CXXScopeSpec &SS = DS.getTypeSpecScope();
1549
1.94M
  if (getLangOpts().CPlusPlus) {
1550
    // "FOO : BAR" is not a potential typo for "FOO::BAR".  In this context it
1551
    // is a base-specifier-list.
1552
1.00M
    ColonProtectionRAIIObject X(*this);
1553
1554
1.00M
    CXXScopeSpec Spec;
1555
1.00M
    bool HasValidSpec = true;
1556
1.00M
    if (ParseOptionalCXXScopeSpecifier(Spec, /*ObjectType=*/nullptr,
1557
1.00M
                                       /*ObjectHadErrors=*/false,
1558
2
                                       EnteringContext)) {
1559
2
      DS.SetTypeSpecError();
1560
2
      HasValidSpec = false;
1561
2
    }
1562
1.00M
    if (Spec.isSet())
1563
1.87k
      if (Tok.isNot(tok::identifier) && 
Tok.isNot(tok::annot_template_id)426
) {
1564
17
        Diag(Tok, diag::err_expected) << tok::identifier;
1565
17
        HasValidSpec = false;
1566
17
      }
1567
1.00M
    if (HasValidSpec)
1568
1.00M
      SS = Spec;
1569
1.00M
  }
1570
1571
1.94M
  TemplateParameterLists *TemplateParams = TemplateInfo.TemplateParams;
1572
1573
1.94M
  auto RecoverFromUndeclaredTemplateName = [&](IdentifierInfo *Name,
1574
1.94M
                                               SourceLocation NameLoc,
1575
1.94M
                                               SourceRange TemplateArgRange,
1576
24
                                               bool KnownUndeclared) {
1577
24
    Diag(NameLoc, diag::err_explicit_spec_non_template)
1578
24
        << (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation)
1579
24
        << TagTokKind << Name << TemplateArgRange << KnownUndeclared;
1580
1581
    // Strip off the last template parameter list if it was empty, since
1582
    // we've removed its template argument list.
1583
24
    if (TemplateParams && 
TemplateInfo.LastParameterListWasEmpty16
) {
1584
16
      if (TemplateParams->size() > 1) {
1585
0
        TemplateParams->pop_back();
1586
16
      } else {
1587
16
        TemplateParams = nullptr;
1588
16
        const_cast<ParsedTemplateInfo &>(TemplateInfo).Kind =
1589
16
            ParsedTemplateInfo::NonTemplate;
1590
16
      }
1591
8
    } else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
1592
      // Pretend this is just a forward declaration.
1593
6
      TemplateParams = nullptr;
1594
6
      const_cast<ParsedTemplateInfo &>(TemplateInfo).Kind =
1595
6
          ParsedTemplateInfo::NonTemplate;
1596
6
      const_cast<ParsedTemplateInfo &>(TemplateInfo).TemplateLoc =
1597
6
          SourceLocation();
1598
6
      const_cast<ParsedTemplateInfo &>(TemplateInfo).ExternLoc =
1599
6
          SourceLocation();
1600
6
    }
1601
24
  };
1602
1603
  // Parse the (optional) class name or simple-template-id.
1604
1.94M
  IdentifierInfo *Name = nullptr;
1605
1.94M
  SourceLocation NameLoc;
1606
1.94M
  TemplateIdAnnotation *TemplateId = nullptr;
1607
1.94M
  if (Tok.is(tok::identifier)) {
1608
1.52M
    Name = Tok.getIdentifierInfo();
1609
1.52M
    NameLoc = ConsumeToken();
1610
1611
1.52M
    if (Tok.is(tok::less) && 
getLangOpts().CPlusPlus12
) {
1612
      // The name was supposed to refer to a template, but didn't.
1613
      // Eat the template argument list and try to continue parsing this as
1614
      // a class (or template thereof).
1615
11
      TemplateArgList TemplateArgs;
1616
11
      SourceLocation LAngleLoc, RAngleLoc;
1617
11
      if (ParseTemplateIdAfterTemplateName(true, LAngleLoc, TemplateArgs,
1618
2
                                           RAngleLoc)) {
1619
        // We couldn't parse the template argument list at all, so don't
1620
        // try to give any location information for the list.
1621
2
        LAngleLoc = RAngleLoc = SourceLocation();
1622
2
      }
1623
11
      RecoverFromUndeclaredTemplateName(
1624
11
          Name, NameLoc, SourceRange(LAngleLoc, RAngleLoc), false);
1625
11
    }
1626
424k
  } else if (Tok.is(tok::annot_template_id)) {
1627
205k
    TemplateId = takeTemplateIdAnnotation(Tok);
1628
205k
    NameLoc = ConsumeAnnotationToken();
1629
1630
205k
    if (TemplateId->Kind == TNK_Undeclared_template) {
1631
      // Try to resolve the template name to a type template. May update Kind.
1632
16
      Actions.ActOnUndeclaredTypeTemplateName(
1633
16
          getCurScope(), TemplateId->Template, TemplateId->Kind, NameLoc, Name);
1634
16
      if (TemplateId->Kind == TNK_Undeclared_template) {
1635
13
        RecoverFromUndeclaredTemplateName(
1636
13
            Name, NameLoc,
1637
13
            SourceRange(TemplateId->LAngleLoc, TemplateId->RAngleLoc), true);
1638
13
        TemplateId = nullptr;
1639
13
      }
1640
16
    }
1641
1642
205k
    if (TemplateId && 
!TemplateId->mightBeType()205k
) {
1643
      // The template-name in the simple-template-id refers to
1644
      // something other than a type template. Give an appropriate
1645
      // error message and skip to the ';'.
1646
10
      SourceRange Range(NameLoc);
1647
10
      if (SS.isNotEmpty())
1648
5
        Range.setBegin(SS.getBeginLoc());
1649
1650
      // FIXME: Name may be null here.
1651
10
      Diag(TemplateId->LAngleLoc, diag::err_template_spec_syntax_non_template)
1652
10
          << TemplateId->Name << static_cast<int>(TemplateId->Kind) << Range;
1653
1654
10
      DS.SetTypeSpecError();
1655
10
      SkipUntil(tok::semi, StopBeforeMatch);
1656
10
      return;
1657
10
    }
1658
1.94M
  }
1659
1660
  // There are four options here.
1661
  //  - If we are in a trailing return type, this is always just a reference,
1662
  //    and we must not try to parse a definition. For instance,
1663
  //      [] () -> struct S { };
1664
  //    does not define a type.
1665
  //  - If we have 'struct foo {...', 'struct foo :...',
1666
  //    'struct foo final :' or 'struct foo final {', then this is a definition.
1667
  //  - If we have 'struct foo;', then this is either a forward declaration
1668
  //    or a friend declaration, which have to be treated differently.
1669
  //  - Otherwise we have something like 'struct foo xyz', a reference.
1670
  //
1671
  //  We also detect these erroneous cases to provide better diagnostic for
1672
  //  C++11 attributes parsing.
1673
  //  - attributes follow class name:
1674
  //    struct foo [[]] {};
1675
  //  - attributes appear before or after 'final':
1676
  //    struct foo [[]] final [[]] {};
1677
  //
1678
  // However, in type-specifier-seq's, things look like declarations but are
1679
  // just references, e.g.
1680
  //   new struct s;
1681
  // or
1682
  //   &T::operator struct s;
1683
  // For these, DSC is DeclSpecContext::DSC_type_specifier or
1684
  // DeclSpecContext::DSC_alias_declaration.
1685
1686
  // If there are attributes after class name, parse them.
1687
1.94M
  MaybeParseCXX11Attributes(Attributes);
1688
1689
1.94M
  const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
1690
1.94M
  Sema::TagUseKind TUK;
1691
1.94M
  if (isDefiningTypeSpecifierContext(DSC) == AllowDefiningTypeSpec::No ||
1692
1.94M
      (getLangOpts().OpenMP && 
OpenMPDirectiveParsing16.0k
))
1693
127
    TUK = Sema::TUK_Reference;
1694
1.94M
  else if (Tok.is(tok::l_brace) ||
1695
983k
           (getLangOpts().CPlusPlus && 
Tok.is(tok::colon)546k
) ||
1696
795k
           (isCXX11FinalKeyword() &&
1697
1.15M
            
(118
NextToken().is(tok::l_brace)118
||
NextToken().is(tok::colon)72
))) {
1698
1.15M
    if (DS.isFriendSpecified()) {
1699
      // C++ [class.friend]p2:
1700
      //   A class shall not be defined in a friend declaration.
1701
4
      Diag(Tok.getLocation(), diag::err_friend_decl_defines_type)
1702
4
        << SourceRange(DS.getFriendSpecLoc());
1703
1704
      // Skip everything up to the semicolon, so that this looks like a proper
1705
      // friend class (or template thereof) declaration.
1706
4
      SkipUntil(tok::semi, StopBeforeMatch);
1707
4
      TUK = Sema::TUK_Friend;
1708
1.15M
    } else {
1709
      // Okay, this is a class definition.
1710
1.15M
      TUK = Sema::TUK_Definition;
1711
1.15M
    }
1712
795k
  } else if (isCXX11FinalKeyword() && 
(16
NextToken().is(tok::l_square)16
||
1713
12
                                       
NextToken().is(tok::kw_alignas)9
)) {
1714
    // We can't tell if this is a definition or reference
1715
    // until we skipped the 'final' and C++11 attribute specifiers.
1716
12
    TentativeParsingAction PA(*this);
1717
1718
    // Skip the 'final' keyword.
1719
12
    ConsumeToken();
1720
1721
    // Skip C++11 attribute specifiers.
1722
47
    while (true) {
1723
47
      if (Tok.is(tok::l_square) && 
NextToken().is(tok::l_square)23
) {
1724
22
        ConsumeBracket();
1725
22
        if (!SkipUntil(tok::r_square, StopAtSemi))
1726
0
          break;
1727
25
      } else if (Tok.is(tok::kw_alignas) && 
NextToken().is(tok::l_paren)13
) {
1728
13
        ConsumeToken();
1729
13
        ConsumeParen();
1730
13
        if (!SkipUntil(tok::r_paren, StopAtSemi))
1731
0
          break;
1732
12
      } else {
1733
12
        break;
1734
12
      }
1735
47
    }
1736
1737
12
    if (Tok.isOneOf(tok::l_brace, tok::colon))
1738
10
      TUK = Sema::TUK_Definition;
1739
2
    else
1740
2
      TUK = Sema::TUK_Reference;
1741
1742
12
    PA.Revert();
1743
795k
  } else if (!isTypeSpecifier(DSC) &&
1744
794k
             (Tok.is(tok::semi) ||
1745
697k
              (Tok.isAtStartOfLine() && 
!isValidAfterTypeSpecifier(false)1.29k
))) {
1746
78.7k
    TUK = DS.isFriendSpecified() ? 
Sema::TUK_Friend18.1k
: Sema::TUK_Declaration;
1747
96.9k
    if (Tok.isNot(tok::semi)) {
1748
14
      const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy();
1749
      // A semicolon was missing after this declaration. Diagnose and recover.
1750
14
      ExpectAndConsume(tok::semi, diag::err_expected_after,
1751
14
                       DeclSpec::getSpecifierName(TagType, PPol));
1752
14
      PP.EnterToken(Tok, /*IsReinject*/true);
1753
14
      Tok.setKind(tok::semi);
1754
14
    }
1755
96.9k
  } else
1756
698k
    TUK = Sema::TUK_Reference;
1757
1758
  // Forbid misplaced attributes. In cases of a reference, we pass attributes
1759
  // to caller to handle.
1760
1.94M
  if (TUK != Sema::TUK_Reference) {
1761
    // If this is not a reference, then the only possible
1762
    // valid place for C++11 attributes to appear here
1763
    // is between class-key and class-name. If there are
1764
    // any attributes after class-name, we try a fixit to move
1765
    // them to the right place.
1766
1.24M
    SourceRange AttrRange = Attributes.Range;
1767
1.24M
    if (AttrRange.isValid()) {
1768
20
      Diag(AttrRange.getBegin(), diag::err_attributes_not_allowed)
1769
20
        << AttrRange
1770
20
        << FixItHint::CreateInsertionFromRange(AttrFixitLoc,
1771
20
                                               CharSourceRange(AttrRange, true))
1772
20
        << FixItHint::CreateRemoval(AttrRange);
1773
1774
      // Recover by adding misplaced attributes to the attribute list
1775
      // of the class so they can be applied on the class later.
1776
20
      attrs.takeAllFrom(Attributes);
1777
20
    }
1778
1.24M
  }
1779
1780
  // If this is an elaborated type specifier, and we delayed
1781
  // diagnostics before, just merge them into the current pool.
1782
1.94M
  if (shouldDelayDiagsInTag) {
1783
57.4k
    diagsFromTag.done();
1784
57.4k
    if (TUK == Sema::TUK_Reference)
1785
4
      diagsFromTag.redelay();
1786
57.4k
  }
1787
1788
1.94M
  if (!Name && 
!TemplateId424k
&&
(219k
DS.getTypeSpecType() == DeclSpec::TST_error219k
||
1789
219k
                               TUK != Sema::TUK_Definition)) {
1790
28
    if (DS.getTypeSpecType() != DeclSpec::TST_error) {
1791
      // We have a declaration or reference to an anonymous class.
1792
24
      Diag(StartLoc, diag::err_anon_type_definition)
1793
24
        << DeclSpec::getSpecifierName(TagType, Policy);
1794
24
    }
1795
1796
    // If we are parsing a definition and stop at a base-clause, continue on
1797
    // until the semicolon.  Continuing from the comma will just trick us into
1798
    // thinking we are seeing a variable declaration.
1799
28
    if (TUK == Sema::TUK_Definition && 
Tok.is(tok::colon)0
)
1800
0
      SkipUntil(tok::semi, StopBeforeMatch);
1801
28
    else
1802
28
      SkipUntil(tok::comma, StopAtSemi);
1803
28
    return;
1804
28
  }
1805
1806
  // Create the tag portion of the class or class template.
1807
1.94M
  DeclResult TagOrTempResult = true; // invalid
1808
1.94M
  TypeResult TypeResult = true; // invalid
1809
1810
1.94M
  bool Owned = false;
1811
1.94M
  Sema::SkipBodyInfo SkipBody;
1812
1.94M
  if (TemplateId) {
1813
    // Explicit specialization, class template partial specialization,
1814
    // or explicit instantiation.
1815
205k
    ASTTemplateArgsPtr TemplateArgsPtr(TemplateId->getTemplateArgs(),
1816
205k
                                       TemplateId->NumArgs);
1817
205k
    if (TemplateId->isInvalid()) {
1818
      // Can't build the declaration.
1819
205k
    } else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
1820
6.92k
        TUK == Sema::TUK_Declaration) {
1821
      // This is an explicit instantiation of a class template.
1822
6.90k
      ProhibitAttributes(attrs);
1823
1824
6.90k
      TagOrTempResult = Actions.ActOnExplicitInstantiation(
1825
6.90k
          getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc,
1826
6.90k
          TagType, StartLoc, SS, TemplateId->Template,
1827
6.90k
          TemplateId->TemplateNameLoc, TemplateId->LAngleLoc, TemplateArgsPtr,
1828
6.90k
          TemplateId->RAngleLoc, attrs);
1829
1830
      // Friend template-ids are treated as references unless
1831
      // they have template headers, in which case they're ill-formed
1832
      // (FIXME: "template <class T> friend class A<T>::B<int>;").
1833
      // We diagnose this error in ActOnClassTemplateSpecialization.
1834
198k
    } else if (TUK == Sema::TUK_Reference ||
1835
198k
               (TUK == Sema::TUK_Friend &&
1836
4.51k
                
TemplateInfo.Kind == ParsedTemplateInfo::NonTemplate4.46k
)) {
1837
4.51k
      ProhibitAttributes(attrs);
1838
4.51k
      TypeResult = Actions.ActOnTagTemplateIdType(TUK, TagType, StartLoc,
1839
4.51k
                                                  SS,
1840
4.51k
                                                  TemplateId->TemplateKWLoc,
1841
4.51k
                                                  TemplateId->Template,
1842
4.51k
                                                  TemplateId->TemplateNameLoc,
1843
4.51k
                                                  TemplateId->LAngleLoc,
1844
4.51k
                                                  TemplateArgsPtr,
1845
4.51k
                                                  TemplateId->RAngleLoc);
1846
194k
    } else {
1847
      // This is an explicit specialization or a class template
1848
      // partial specialization.
1849
194k
      TemplateParameterLists FakedParamLists;
1850
194k
      if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
1851
        // This looks like an explicit instantiation, because we have
1852
        // something like
1853
        //
1854
        //   template class Foo<X>
1855
        //
1856
        // but it actually has a definition. Most likely, this was
1857
        // meant to be an explicit specialization, but the user forgot
1858
        // the '<>' after 'template'.
1859
        // It this is friend declaration however, since it cannot have a
1860
        // template header, it is most likely that the user meant to
1861
        // remove the 'template' keyword.
1862
10
        assert((TUK == Sema::TUK_Definition || TUK == Sema::TUK_Friend) &&
1863
10
               "Expected a definition here");
1864
1865
10
        if (TUK == Sema::TUK_Friend) {
1866
0
          Diag(DS.getFriendSpecLoc(), diag::err_friend_explicit_instantiation);
1867
0
          TemplateParams = nullptr;
1868
10
        } else {
1869
10
          SourceLocation LAngleLoc =
1870
10
              PP.getLocForEndOfToken(TemplateInfo.TemplateLoc);
1871
10
          Diag(TemplateId->TemplateNameLoc,
1872
10
               diag::err_explicit_instantiation_with_definition)
1873
10
              << SourceRange(TemplateInfo.TemplateLoc)
1874
10
              << FixItHint::CreateInsertion(LAngleLoc, "<>");
1875
1876
          // Create a fake template parameter list that contains only
1877
          // "template<>", so that we treat this construct as a class
1878
          // template specialization.
1879
10
          FakedParamLists.push_back(Actions.ActOnTemplateParameterList(
1880
10
              0, SourceLocation(), TemplateInfo.TemplateLoc, LAngleLoc, None,
1881
10
              LAngleLoc, nullptr));
1882
10
          TemplateParams = &FakedParamLists;
1883
10
        }
1884
10
      }
1885
1886
      // Build the class template specialization.
1887
194k
      TagOrTempResult = Actions.ActOnClassTemplateSpecialization(
1888
194k
          getCurScope(), TagType, TUK, StartLoc, DS.getModulePrivateSpecLoc(),
1889
194k
          SS, *TemplateId, attrs,
1890
194k
          MultiTemplateParamsArg(TemplateParams ? &(*TemplateParams)[0]
1891
14
                                                : nullptr,
1892
194k
                                 TemplateParams ? TemplateParams->size() : 
014
),
1893
194k
          &SkipBody);
1894
194k
    }
1895
1.74M
  } else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
1896
46
             TUK == Sema::TUK_Declaration) {
1897
    // Explicit instantiation of a member of a class template
1898
    // specialization, e.g.,
1899
    //
1900
    //   template struct Outer<int>::Inner;
1901
    //
1902
42
    ProhibitAttributes(attrs);
1903
1904
42
    TagOrTempResult = Actions.ActOnExplicitInstantiation(
1905
42
        getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc,
1906
42
        TagType, StartLoc, SS, Name, NameLoc, attrs);
1907
1.74M
  } else if (TUK == Sema::TUK_Friend &&
1908
13.7k
             TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate) {
1909
6.26k
    ProhibitAttributes(attrs);
1910
1911
6.26k
    TagOrTempResult = Actions.ActOnTemplatedFriendTag(
1912
6.26k
        getCurScope(), DS.getFriendSpecLoc(), TagType, StartLoc, SS, Name,
1913
6.26k
        NameLoc, attrs,
1914
6.26k
        MultiTemplateParamsArg(TemplateParams ? &(*TemplateParams)[0] : 
nullptr0
,
1915
6.26k
                               TemplateParams ? TemplateParams->size() : 
00
));
1916
1.73M
  } else {
1917
1.73M
    if (TUK != Sema::TUK_Declaration && 
TUK != Sema::TUK_Definition1.66M
)
1918
706k
      ProhibitAttributes(attrs);
1919
1920
1.73M
    if (TUK == Sema::TUK_Definition &&
1921
959k
        TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
1922
      // If the declarator-id is not a template-id, issue a diagnostic and
1923
      // recover by ignoring the 'template' keyword.
1924
4
      Diag(Tok, diag::err_template_defn_explicit_instantiation)
1925
4
        << 1 << FixItHint::CreateRemoval(TemplateInfo.TemplateLoc);
1926
4
      TemplateParams = nullptr;
1927
4
    }
1928
1929
1.73M
    bool IsDependent = false;
1930
1931
    // Don't pass down template parameter lists if this is just a tag
1932
    // reference.  For example, we don't need the template parameters here:
1933
    //   template <class T> class A *makeA(T t);
1934
1.73M
    MultiTemplateParamsArg TParams;
1935
1.73M
    if (TUK != Sema::TUK_Reference && 
TemplateParams1.03M
)
1936
236k
      TParams =
1937
236k
        MultiTemplateParamsArg(&(*TemplateParams)[0], TemplateParams->size());
1938
1939
1.73M
    stripTypeAttributesOffDeclSpec(attrs, DS, TUK);
1940
1941
    // Declaration or definition of a class type
1942
1.73M
    TagOrTempResult = Actions.ActOnTag(
1943
1.73M
        getCurScope(), TagType, TUK, StartLoc, SS, Name, NameLoc, attrs, AS,
1944
1.73M
        DS.getModulePrivateSpecLoc(), TParams, Owned, IsDependent,
1945
1.73M
        SourceLocation(), false, clang::TypeResult(),
1946
1.73M
        DSC == DeclSpecContext::DSC_type_specifier,
1947
1.73M
        DSC == DeclSpecContext::DSC_template_param ||
1948
1.73M
            DSC == DeclSpecContext::DSC_template_type_arg,
1949
1.73M
        &SkipBody);
1950
1951
    // If ActOnTag said the type was dependent, try again with the
1952
    // less common call.
1953
1.73M
    if (IsDependent) {
1954
31
      assert(TUK == Sema::TUK_Reference || TUK == Sema::TUK_Friend);
1955
31
      TypeResult = Actions.ActOnDependentTag(getCurScope(), TagType, TUK,
1956
31
                                             SS, Name, StartLoc, NameLoc);
1957
31
    }
1958
1.73M
  }
1959
1960
  // If there is a body, parse it and inform the actions module.
1961
1.94M
  if (TUK == Sema::TUK_Definition) {
1962
1.15M
    assert(Tok.is(tok::l_brace) ||
1963
1.15M
           (getLangOpts().CPlusPlus && Tok.is(tok::colon)) ||
1964
1.15M
           isCXX11FinalKeyword());
1965
1.15M
    if (SkipBody.ShouldSkip)
1966
254
      SkipCXXMemberSpecification(StartLoc, AttrFixitLoc, TagType,
1967
254
                                 TagOrTempResult.get());
1968
1.15M
    else if (getLangOpts().CPlusPlus)
1969
642k
      ParseCXXMemberSpecification(StartLoc, AttrFixitLoc, attrs, TagType,
1970
642k
                                  TagOrTempResult.get());
1971
507k
    else {
1972
507k
      Decl *D =
1973
507k
          SkipBody.CheckSameAsPrevious ? 
SkipBody.New9
: TagOrTempResult.get();
1974
      // Parse the definition body.
1975
507k
      ParseStructUnionBody(StartLoc, TagType, cast<RecordDecl>(D));
1976
507k
      if (SkipBody.CheckSameAsPrevious &&
1977
9
          !Actions.ActOnDuplicateDefinition(DS, TagOrTempResult.get(),
1978
2
                                            SkipBody)) {
1979
2
        DS.SetTypeSpecError();
1980
2
        return;
1981
2
      }
1982
1.94M
    }
1983
1.15M
  }
1984
1985
1.94M
  if (!TagOrTempResult.isInvalid())
1986
    // Delayed processing of attributes.
1987
1.94M
    Actions.ProcessDeclAttributeDelayed(TagOrTempResult.get(), attrs);
1988
1989
1.94M
  const char *PrevSpec = nullptr;
1990
1.94M
  unsigned DiagID;
1991
1.94M
  bool Result;
1992
1.94M
  if (!TypeResult.isInvalid()) {
1993
4.53k
    Result = DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc,
1994
4.53k
                                NameLoc.isValid() ? NameLoc : 
StartLoc0
,
1995
4.53k
                                PrevSpec, DiagID, TypeResult.get(), Policy);
1996
1.94M
  } else if (!TagOrTempResult.isInvalid()) {
1997
1.94M
    Result = DS.SetTypeSpecType(TagType, StartLoc,
1998
1.72M
                                NameLoc.isValid() ? NameLoc : 
StartLoc219k
,
1999
1.94M
                                PrevSpec, DiagID, TagOrTempResult.get(), Owned,
2000
1.94M
                                Policy);
2001
124
  } else {
2002
124
    DS.SetTypeSpecError();
2003
124
    return;
2004
124
  }
2005
2006
1.94M
  if (Result)
2007
3
    Diag(StartLoc, DiagID) << PrevSpec;
2008
2009
  // At this point, we've successfully parsed a class-specifier in 'definition'
2010
  // form (e.g. "struct foo { int x; }".  While we could just return here, we're
2011
  // going to look at what comes after it to improve error recovery.  If an
2012
  // impossible token occurs next, we assume that the programmer forgot a ; at
2013
  // the end of the declaration and recover that way.
2014
  //
2015
  // Also enforce C++ [temp]p3:
2016
  //   In a template-declaration which defines a class, no declarator
2017
  //   is permitted.
2018
  //
2019
  // After a type-specifier, we don't expect a semicolon. This only happens in
2020
  // C, since definitions are not permitted in this context in C++.
2021
1.94M
  if (TUK == Sema::TUK_Definition &&
2022
1.15M
      (getLangOpts().CPlusPlus || 
!isTypeSpecifier(DSC)507k
) &&
2023
1.15M
      (TemplateInfo.Kind || 
!isValidAfterTypeSpecifier(false)768k
)) {
2024
382k
    if (Tok.isNot(tok::semi)) {
2025
159
      const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy();
2026
159
      ExpectAndConsume(tok::semi, diag::err_expected_after,
2027
159
                       DeclSpec::getSpecifierName(TagType, PPol));
2028
      // Push this token back into the preprocessor and change our current token
2029
      // to ';' so that the rest of the code recovers as though there were an
2030
      // ';' after the definition.
2031
159
      PP.EnterToken(Tok, /*IsReinject=*/true);
2032
159
      Tok.setKind(tok::semi);
2033
159
    }
2034
382k
  }
2035
1.94M
}
2036
2037
/// ParseBaseClause - Parse the base-clause of a C++ class [C++ class.derived].
2038
///
2039
///       base-clause : [C++ class.derived]
2040
///         ':' base-specifier-list
2041
///       base-specifier-list:
2042
///         base-specifier '...'[opt]
2043
///         base-specifier-list ',' base-specifier '...'[opt]
2044
187k
void Parser::ParseBaseClause(Decl *ClassDecl) {
2045
187k
  assert(Tok.is(tok::colon) && "Not a base clause");
2046
187k
  ConsumeToken();
2047
2048
  // Build up an array of parsed base specifiers.
2049
187k
  SmallVector<CXXBaseSpecifier *, 8> BaseInfo;
2050
2051
193k
  while (true) {
2052
    // Parse a base-specifier.
2053
193k
    BaseResult Result = ParseBaseSpecifier(ClassDecl);
2054
193k
    if (Result.isInvalid()) {
2055
      // Skip the rest of this base specifier, up until the comma or
2056
      // opening brace.
2057
241
      SkipUntil(tok::comma, tok::l_brace, StopAtSemi | StopBeforeMatch);
2058
193k
    } else {
2059
      // Add this to our array of base specifiers.
2060
193k
      BaseInfo.push_back(Result.get());
2061
193k
    }
2062
2063
    // If the next token is a comma, consume it and keep reading
2064
    // base-specifiers.
2065
193k
    if (!TryConsumeToken(tok::comma))
2066
187k
      break;
2067
193k
  }
2068
2069
  // Attach the base specifiers
2070
187k
  Actions.ActOnBaseSpecifiers(ClassDecl, BaseInfo);
2071
187k
}
2072
2073
/// ParseBaseSpecifier - Parse a C++ base-specifier. A base-specifier is
2074
/// one entry in the base class list of a class specifier, for example:
2075
///    class foo : public bar, virtual private baz {
2076
/// 'public bar' and 'virtual private baz' are each base-specifiers.
2077
///
2078
///       base-specifier: [C++ class.derived]
2079
///         attribute-specifier-seq[opt] base-type-specifier
2080
///         attribute-specifier-seq[opt] 'virtual' access-specifier[opt]
2081
///                 base-type-specifier
2082
///         attribute-specifier-seq[opt] access-specifier 'virtual'[opt]
2083
///                 base-type-specifier
2084
193k
BaseResult Parser::ParseBaseSpecifier(Decl *ClassDecl) {
2085
193k
  bool IsVirtual = false;
2086
193k
  SourceLocation StartLoc = Tok.getLocation();
2087
2088
193k
  ParsedAttributesWithRange Attributes(AttrFactory);
2089
193k
  MaybeParseCXX11Attributes(Attributes);
2090
2091
  // Parse the 'virtual' keyword.
2092
193k
  if (TryConsumeToken(tok::kw_virtual))
2093
2.07k
    IsVirtual = true;
2094
2095
193k
  CheckMisplacedCXX11Attribute(Attributes, StartLoc);
2096
2097
  // Parse an (optional) access specifier.
2098
193k
  AccessSpecifier Access = getAccessSpecifierIfPresent();
2099
193k
  if (Access != AS_none)
2100
120k
    ConsumeToken();
2101
2102
193k
  CheckMisplacedCXX11Attribute(Attributes, StartLoc);
2103
2104
  // Parse the 'virtual' keyword (again!), in case it came after the
2105
  // access specifier.
2106
193k
  if (Tok.is(tok::kw_virtual))  {
2107
294
    SourceLocation VirtualLoc = ConsumeToken();
2108
294
    if (IsVirtual) {
2109
      // Complain about duplicate 'virtual'
2110
6
      Diag(VirtualLoc, diag::err_dup_virtual)
2111
6
        << FixItHint::CreateRemoval(VirtualLoc);
2112
6
    }
2113
2114
294
    IsVirtual = true;
2115
294
  }
2116
2117
193k
  CheckMisplacedCXX11Attribute(Attributes, StartLoc);
2118
2119
  // Parse the class-name.
2120
2121
  // HACK: MSVC doesn't consider _Atomic to be a keyword and its STL
2122
  // implementation for VS2013 uses _Atomic as an identifier for one of the
2123
  // classes in <atomic>.  Treat '_Atomic' to be an identifier when we are
2124
  // parsing the class-name for a base specifier.
2125
193k
  if (getLangOpts().MSVCCompat && 
Tok.is(tok::kw__Atomic)1.00k
&&
2126
2
      NextToken().is(tok::less))
2127
2
    Tok.setKind(tok::identifier);
2128
2129
193k
  SourceLocation EndLocation;
2130
193k
  SourceLocation BaseLoc;
2131
193k
  TypeResult BaseType = ParseBaseTypeSpecifier(BaseLoc, EndLocation);
2132
193k
  if (BaseType.isInvalid())
2133
136
    return true;
2134
2135
  // Parse the optional ellipsis (for a pack expansion). The ellipsis is
2136
  // actually part of the base-specifier-list grammar productions, but we
2137
  // parse it here for convenience.
2138
193k
  SourceLocation EllipsisLoc;
2139
193k
  TryConsumeToken(tok::ellipsis, EllipsisLoc);
2140
2141
  // Find the complete source range for the base-specifier.
2142
193k
  SourceRange Range(StartLoc, EndLocation);
2143
2144
  // Notify semantic analysis that we have parsed a complete
2145
  // base-specifier.
2146
193k
  return Actions.ActOnBaseSpecifier(ClassDecl, Range, Attributes, IsVirtual,
2147
193k
                                    Access, BaseType.get(), BaseLoc,
2148
193k
                                    EllipsisLoc);
2149
193k
}
2150
2151
/// getAccessSpecifierIfPresent - Determine whether the next token is
2152
/// a C++ access-specifier.
2153
///
2154
///       access-specifier: [C++ class.derived]
2155
///         'private'
2156
///         'protected'
2157
///         'public'
2158
342k
AccessSpecifier Parser::getAccessSpecifierIfPresent() const {
2159
342k
  switch (Tok.getKind()) {
2160
72.8k
  default: return AS_none;
2161
44.8k
  case tok::kw_private: return AS_private;
2162
14.7k
  case tok::kw_protected: return AS_protected;
2163
209k
  case tok::kw_public: return AS_public;
2164
342k
  }
2165
342k
}
2166
2167
/// If the given declarator has any parts for which parsing has to be
2168
/// delayed, e.g., default arguments or an exception-specification, create a
2169
/// late-parsed method declaration record to handle the parsing at the end of
2170
/// the class definition.
2171
void Parser::HandleMemberFunctionDeclDelays(Declarator& DeclaratorInfo,
2172
994k
                                            Decl *ThisDecl) {
2173
994k
  DeclaratorChunk::FunctionTypeInfo &FTI
2174
994k
    = DeclaratorInfo.getFunctionTypeInfo();
2175
  // If there was a late-parsed exception-specification, we'll need a
2176
  // late parse
2177
994k
  bool NeedLateParse = FTI.getExceptionSpecType() == EST_Unparsed;
2178
2179
994k
  if (!NeedLateParse) {
2180
    // Look ahead to see if there are any default args
2181
1.87M
    for (unsigned ParamIdx = 0; ParamIdx < FTI.NumParams; 
++ParamIdx905k
) {
2182
965k
      auto Param = cast<ParmVarDecl>(FTI.Params[ParamIdx].Param);
2183
965k
      if (Param->hasUnparsedDefaultArg()) {
2184
60.1k
        NeedLateParse = true;
2185
60.1k
        break;
2186
60.1k
      }
2187
965k
    }
2188
965k
  }
2189
2190
994k
  if (NeedLateParse) {
2191
    // Push this method onto the stack of late-parsed method
2192
    // declarations.
2193
89.6k
    auto LateMethod = new LateParsedMethodDeclaration(this, ThisDecl);
2194
89.6k
    getCurrentClass().LateParsedDeclarations.push_back(LateMethod);
2195
2196
    // Push tokens for each parameter. Those that do not have defaults will be
2197
    // NULL. We need to track all the parameters so that we can push them into
2198
    // scope for later parameters and perhaps for the exception specification.
2199
89.6k
    LateMethod->DefaultArgs.reserve(FTI.NumParams);
2200
248k
    for (unsigned ParamIdx = 0; ParamIdx < FTI.NumParams; 
++ParamIdx158k
)
2201
158k
      LateMethod->DefaultArgs.push_back(LateParsedDefaultArgument(
2202
158k
          FTI.Params[ParamIdx].Param,
2203
158k
          std::move(FTI.Params[ParamIdx].DefaultArgTokens)));
2204
2205
    // Stash the exception-specification tokens in the late-pased method.
2206
89.6k
    if (FTI.getExceptionSpecType() == EST_Unparsed) {
2207
29.5k
      LateMethod->ExceptionSpecTokens = FTI.ExceptionSpecTokens;
2208
29.5k
      FTI.ExceptionSpecTokens = nullptr;
2209
29.5k
    }
2210
89.6k
  }
2211
994k
}
2212
2213
/// isCXX11VirtSpecifier - Determine whether the given token is a C++11
2214
/// virt-specifier.
2215
///
2216
///       virt-specifier:
2217
///         override
2218
///         final
2219
///         __final
2220
6.42M
VirtSpecifiers::Specifier Parser::isCXX11VirtSpecifier(const Token &Tok) const {
2221
6.42M
  if (!getLangOpts().CPlusPlus || 
Tok.isNot(tok::identifier)5.55M
)
2222
6.00M
    return VirtSpecifiers::VS_None;
2223
2224
423k
  IdentifierInfo *II = Tok.getIdentifierInfo();
2225
2226
  // Initialize the contextual keywords.
2227
423k
  if (!Ident_final) {
2228
1.97k
    Ident_final = &PP.getIdentifierTable().get("final");
2229
1.97k
    if (getLangOpts().GNUKeywords)
2230
490
      Ident_GNU_final = &PP.getIdentifierTable().get("__final");
2231
1.97k
    if (getLangOpts().MicrosoftExt)
2232
126
      Ident_sealed = &PP.getIdentifierTable().get("sealed");
2233
1.97k
    Ident_override = &PP.getIdentifierTable().get("override");
2234
1.97k
  }
2235
2236
423k
  if (II == Ident_override)
2237
454
    return VirtSpecifiers::VS_Override;
2238
2239
422k
  if (II == Ident_sealed)
2240
51
    return VirtSpecifiers::VS_Sealed;
2241
2242
422k
  if (II == Ident_final)
2243
398
    return VirtSpecifiers::VS_Final;
2244
2245
422k
  if (II == Ident_GNU_final)
2246
8
    return VirtSpecifiers::VS_GNU_Final;
2247
2248
422k
  return VirtSpecifiers::VS_None;
2249
422k
}
2250
2251
/// ParseOptionalCXX11VirtSpecifierSeq - Parse a virt-specifier-seq.
2252
///
2253
///       virt-specifier-seq:
2254
///         virt-specifier
2255
///         virt-specifier-seq virt-specifier
2256
void Parser::ParseOptionalCXX11VirtSpecifierSeq(VirtSpecifiers &VS,
2257
                                                bool IsInterface,
2258
4.81M
                                                SourceLocation FriendLoc) {
2259
4.81M
  while (true) {
2260
4.81M
    VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier();
2261
4.81M
    if (Specifier == VirtSpecifiers::VS_None)
2262
4.81M
      return;
2263
2264
541
    if (FriendLoc.isValid()) {
2265
6
      Diag(Tok.getLocation(), diag::err_friend_decl_spec)
2266
6
        << VirtSpecifiers::getSpecifierName(Specifier)
2267
6
        << FixItHint::CreateRemoval(Tok.getLocation())
2268
6
        << SourceRange(FriendLoc, FriendLoc);
2269
6
      ConsumeToken();
2270
6
      continue;
2271
6
    }
2272
2273
    // C++ [class.mem]p8:
2274
    //   A virt-specifier-seq shall contain at most one of each virt-specifier.
2275
535
    const char *PrevSpec = nullptr;
2276
535
    if (VS.SetSpecifier(Specifier, Tok.getLocation(), PrevSpec))
2277
4
      Diag(Tok.getLocation(), diag::err_duplicate_virt_specifier)
2278
4
        << PrevSpec
2279
4
        << FixItHint::CreateRemoval(Tok.getLocation());
2280
2281
535
    if (IsInterface && 
(3
Specifier == VirtSpecifiers::VS_Final3
||
2282
2
                        Specifier == VirtSpecifiers::VS_Sealed)) {
2283
1
      Diag(Tok.getLocation(), diag::err_override_control_interface)
2284
1
        << VirtSpecifiers::getSpecifierName(Specifier);
2285
534
    } else if (Specifier == VirtSpecifiers::VS_Sealed) {
2286
6
      Diag(Tok.getLocation(), diag::ext_ms_sealed_keyword);
2287
528
    } else if (Specifier == VirtSpecifiers::VS_GNU_Final) {
2288
2
      Diag(Tok.getLocation(), diag::ext_warn_gnu_final);
2289
526
    } else {
2290
526
      Diag(Tok.getLocation(),
2291
526
           getLangOpts().CPlusPlus11
2292
518
               ? diag::warn_cxx98_compat_override_control_keyword
2293
8
               : diag::ext_override_control_keyword)
2294
526
          << VirtSpecifiers::getSpecifierName(Specifier);
2295
526
    }
2296
535
    ConsumeToken();
2297
535
  }
2298
4.81M
}
2299
2300
/// isCXX11FinalKeyword - Determine whether the next token is a C++11
2301
/// 'final' or Microsoft 'sealed' contextual keyword.
2302
1.59M
bool Parser::isCXX11FinalKeyword() const {
2303
1.59M
  VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier();
2304
1.59M
  return Specifier == VirtSpecifiers::VS_Final ||
2305
1.59M
         Specifier == VirtSpecifiers::VS_GNU_Final ||
2306
1.59M
         Specifier == VirtSpecifiers::VS_Sealed;
2307
1.59M
}
2308
2309
/// Parse a C++ member-declarator up to, but not including, the optional
2310
/// brace-or-equal-initializer or pure-specifier.
2311
bool Parser::ParseCXXMemberDeclaratorBeforeInitializer(
2312
    Declarator &DeclaratorInfo, VirtSpecifiers &VS, ExprResult &BitfieldSize,
2313
2.43M
    LateParsedAttrList &LateParsedAttrs) {
2314
  // member-declarator:
2315
  //   declarator virt-specifier-seq[opt] pure-specifier[opt]
2316
  //   declarator requires-clause
2317
  //   declarator brace-or-equal-initializer[opt]
2318
  //   identifier attribute-specifier-seq[opt] ':' constant-expression
2319
  //       brace-or-equal-initializer[opt]
2320
  //   ':' constant-expression
2321
  //
2322
  // NOTE: the latter two productions are a proposed bugfix rather than the
2323
  // current grammar rules as of C++20.
2324
2.43M
  if (Tok.isNot(tok::colon))
2325
2.43M
    ParseDeclarator(DeclaratorInfo);
2326
2.21k
  else
2327
2.21k
    DeclaratorInfo.SetIdentifier(nullptr, Tok.getLocation());
2328
2329
2.43M
  if (!DeclaratorInfo.isFunctionDeclarator() && 
TryConsumeToken(tok::colon)1.42M
) {
2330
26.6k
    assert(DeclaratorInfo.isPastIdentifier() &&
2331
26.6k
           "don't know where identifier would go yet?");
2332
26.6k
    BitfieldSize = ParseConstantExpression();
2333
26.6k
    if (BitfieldSize.isInvalid())
2334
9
      SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2335
2.40M
  } else if (Tok.is(tok::kw_requires)) {
2336
42
    ParseTrailingRequiresClause(DeclaratorInfo);
2337
2.40M
  } else {
2338
2.40M
    ParseOptionalCXX11VirtSpecifierSeq(
2339
2.40M
        VS, getCurrentClass().IsInterface,
2340
2.40M
        DeclaratorInfo.getDeclSpec().getFriendSpecLoc());
2341
2.40M
    if (!VS.isUnset())
2342
514
      MaybeParseAndDiagnoseDeclSpecAfterCXX11VirtSpecifierSeq(DeclaratorInfo, VS);
2343
2.40M
  }
2344
2345
  // If a simple-asm-expr is present, parse it.
2346
2.43M
  if (Tok.is(tok::kw_asm)) {
2347
8
    SourceLocation Loc;
2348
8
    ExprResult AsmLabel(ParseSimpleAsm(/*ForAsmLabel*/ true, &Loc));
2349
8
    if (AsmLabel.isInvalid())
2350
0
      SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2351
2352
8
    DeclaratorInfo.setAsmLabel(AsmLabel.get());
2353
8
    DeclaratorInfo.SetRangeEnd(Loc);
2354
8
  }
2355
2356
  // If attributes exist after the declarator, but before an '{', parse them.
2357
  // However, this does not apply for [[]] attributes (which could show up
2358
  // before or after the __attribute__ attributes).
2359
2.43M
  DiagnoseAndSkipCXX11Attributes();
2360
2.43M
  MaybeParseGNUAttributes(DeclaratorInfo, &LateParsedAttrs);
2361
2.43M
  DiagnoseAndSkipCXX11Attributes();
2362
2363
  // For compatibility with code written to older Clang, also accept a
2364
  // virt-specifier *after* the GNU attributes.
2365
2.43M
  if (BitfieldSize.isUnset() && 
VS.isUnset()2.40M
) {
2366
2.40M
    ParseOptionalCXX11VirtSpecifierSeq(
2367
2.40M
        VS, getCurrentClass().IsInterface,
2368
2.40M
        DeclaratorInfo.getDeclSpec().getFriendSpecLoc());
2369
2.40M
    if (!VS.isUnset()) {
2370
      // If we saw any GNU-style attributes that are known to GCC followed by a
2371
      // virt-specifier, issue a GCC-compat warning.
2372
5
      for (const ParsedAttr &AL : DeclaratorInfo.getAttributes())
2373
2
        if (AL.isKnownToGCC() && 
!AL.isCXX11Attribute()1
)
2374
1
          Diag(AL.getLoc(), diag::warn_gcc_attribute_location);
2375
2376
5
      MaybeParseAndDiagnoseDeclSpecAfterCXX11VirtSpecifierSeq(DeclaratorInfo, VS);
2377
5
    }
2378
2.40M
  }
2379
2380
  // If this has neither a name nor a bit width, something has gone seriously
2381
  // wrong. Skip until the semi-colon or }.
2382
2.43M
  if (!DeclaratorInfo.hasName() && 
BitfieldSize.isUnset()2.31k
) {
2383
    // If so, skip until the semi-colon or a }.
2384
99
    SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
2385
99
    return true;
2386
99
  }
2387
2.43M
  return false;
2388
2.43M
}
2389
2390
/// Look for declaration specifiers possibly occurring after C++11
2391
/// virt-specifier-seq and diagnose them.
2392
void Parser::MaybeParseAndDiagnoseDeclSpecAfterCXX11VirtSpecifierSeq(
2393
    Declarator &D,
2394
519
    VirtSpecifiers &VS) {
2395
519
  DeclSpec DS(AttrFactory);
2396
2397
  // GNU-style and C++11 attributes are not allowed here, but they will be
2398
  // handled by the caller.  Diagnose everything else.
2399
519
  ParseTypeQualifierListOpt(
2400
519
      DS, AR_NoAttributesParsed, false,
2401
2
      /*IdentifierRequired=*/false, llvm::function_ref<void()>([&]() {
2402
2
        Actions.CodeCompleteFunctionQualifiers(DS, D, &VS);
2403
2
      }));
2404
519
  D.ExtendWithDeclSpec(DS);
2405
2406
519
  if (D.isFunctionDeclarator()) {
2407
511
    auto &Function = D.getFunctionTypeInfo();
2408
511
    if (DS.getTypeQualifiers() != DeclSpec::TQ_unspecified) {
2409
4
      auto DeclSpecCheck = [&](DeclSpec::TQ TypeQual, StringRef FixItName,
2410
8
                               SourceLocation SpecLoc) {
2411
8
        FixItHint Insertion;
2412
8
        auto &MQ = Function.getOrCreateMethodQualifiers();
2413
8
        if (!(MQ.getTypeQualifiers() & TypeQual)) {
2414
8
          std::string Name(FixItName.data());
2415
8
          Name += " ";
2416
8
          Insertion = FixItHint::CreateInsertion(VS.getFirstLocation(), Name);
2417
8
          MQ.SetTypeQual(TypeQual, SpecLoc);
2418
8
        }
2419
8
        Diag(SpecLoc, diag::err_declspec_after_virtspec)
2420
8
            << FixItName
2421
8
            << VirtSpecifiers::getSpecifierName(VS.getLastSpecifier())
2422
8
            << FixItHint::CreateRemoval(SpecLoc) << Insertion;
2423
8
      };
2424
4
      DS.forEachQualifier(DeclSpecCheck);
2425
4
    }
2426
2427
    // Parse ref-qualifiers.
2428
511
    bool RefQualifierIsLValueRef = true;
2429
511
    SourceLocation RefQualifierLoc;
2430
511
    if (ParseRefQualifier(RefQualifierIsLValueRef, RefQualifierLoc)) {
2431
2
      const char *Name = (RefQualifierIsLValueRef ? "& " : "&& ");
2432
4
      FixItHint Insertion = FixItHint::CreateInsertion(VS.getFirstLocation(), Name);
2433
4
      Function.RefQualifierIsLValueRef = RefQualifierIsLValueRef;
2434
4
      Function.RefQualifierLoc = RefQualifierLoc;
2435
2436
4
      Diag(RefQualifierLoc, diag::err_declspec_after_virtspec)
2437
2
        << (RefQualifierIsLValueRef ? "&" : "&&")
2438
4
        << VirtSpecifiers::getSpecifierName(VS.getLastSpecifier())
2439
4
        << FixItHint::CreateRemoval(RefQualifierLoc)
2440
4
        << Insertion;
2441
4
      D.SetRangeEnd(RefQualifierLoc);
2442
4
    }
2443
511
  }
2444
519
}
2445
2446
/// ParseCXXClassMemberDeclaration - Parse a C++ class member declaration.
2447
///
2448
///       member-declaration:
2449
///         decl-specifier-seq[opt] member-declarator-list[opt] ';'
2450
///         function-definition ';'[opt]
2451
///         ::[opt] nested-name-specifier template[opt] unqualified-id ';'[TODO]
2452
///         using-declaration                                            [TODO]
2453
/// [C++0x] static_assert-declaration
2454
///         template-declaration
2455
/// [GNU]   '__extension__' member-declaration
2456
///
2457
///       member-declarator-list:
2458
///         member-declarator
2459
///         member-declarator-list ',' member-declarator
2460
///
2461
///       member-declarator:
2462
///         declarator virt-specifier-seq[opt] pure-specifier[opt]
2463
/// [C++2a] declarator requires-clause
2464
///         declarator constant-initializer[opt]
2465
/// [C++11] declarator brace-or-equal-initializer[opt]
2466
///         identifier[opt] ':' constant-expression
2467
///
2468
///       virt-specifier-seq:
2469
///         virt-specifier
2470
///         virt-specifier-seq virt-specifier
2471
///
2472
///       virt-specifier:
2473
///         override
2474
///         final
2475
/// [MS]    sealed
2476
///
2477
///       pure-specifier:
2478
///         '= 0'
2479
///
2480
///       constant-initializer:
2481
///         '=' constant-expression
2482
///
2483
Parser::DeclGroupPtrTy
2484
Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
2485
                                       ParsedAttributes &AccessAttrs,
2486
                                       const ParsedTemplateInfo &TemplateInfo,
2487
2.74M
                                       ParsingDeclRAIIObject *TemplateDiags) {
2488
2.74M
  if (Tok.is(tok::at)) {
2489
2
    if (getLangOpts().ObjC && NextToken().isObjCAtKeyword(tok::objc_defs))
2490
1
      Diag(Tok, diag::err_at_defs_cxx);
2491
1
    else
2492
1
      Diag(Tok, diag::err_at_in_class);
2493
2494
2
    ConsumeToken();
2495
2
    SkipUntil(tok::r_brace, StopAtSemi);
2496
2
    return nullptr;
2497
2
  }
2498
2499
  // Turn on colon protection early, while parsing declspec, although there is
2500
  // nothing to protect there. It prevents from false errors if error recovery
2501
  // incorrectly determines where the declspec ends, as in the example:
2502
  //   struct A { enum class B { C }; };
2503
  //   const int C = 4;
2504
  //   struct D { A::B : C; };
2505
2.74M
  ColonProtectionRAIIObject X(*this);
2506
2507
  // Access declarations.
2508
2.74M
  bool MalformedTypeSpec = false;
2509
2.74M
  if (!TemplateInfo.Kind &&
2510
2.54M
      Tok.isOneOf(tok::identifier, tok::coloncolon, tok::kw___super)) {
2511
718k
    if (TryAnnotateCXXScopeToken())
2512
2
      MalformedTypeSpec = true;
2513
2514
718k
    bool isAccessDecl;
2515
718k
    if (Tok.isNot(tok::annot_cxxscope))
2516
706k
      isAccessDecl = false;
2517
11.8k
    else if (NextToken().is(tok::identifier))
2518
11.1k
      isAccessDecl = GetLookAheadToken(2).is(tok::semi);
2519
708
    else
2520
708
      isAccessDecl = NextToken().is(tok::kw_operator);
2521
2522
718k
    if (isAccessDecl) {
2523
      // Collect the scope specifier token we annotated earlier.
2524
105
      CXXScopeSpec SS;
2525
105
      ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
2526
105
                                     /*ObjectHadErrors=*/false,
2527
105
                                     /*EnteringContext=*/false);
2528
2529
105
      if (SS.isInvalid()) {
2530
7
        SkipUntil(tok::semi);
2531
7
        return nullptr;
2532
7
      }
2533
2534
      // Try to parse an unqualified-id.
2535
98
      SourceLocation TemplateKWLoc;
2536
98
      UnqualifiedId Name;
2537
98
      if (ParseUnqualifiedId(SS, /*ObjectType=*/nullptr,
2538
98
                             /*ObjectHadErrors=*/false, false, true, true,
2539
0
                             false, &TemplateKWLoc, Name)) {
2540
0
        SkipUntil(tok::semi);
2541
0
        return nullptr;
2542
0
      }
2543
2544
      // TODO: recover from mistakenly-qualified operator declarations.
2545
98
      if (ExpectAndConsume(tok::semi, diag::err_expected_after,
2546
0
                           "access declaration")) {
2547
0
        SkipUntil(tok::semi);
2548
0
        return nullptr;
2549
0
      }
2550
2551
      // FIXME: We should do something with the 'template' keyword here.
2552
98
      return DeclGroupPtrTy::make(DeclGroupRef(Actions.ActOnUsingDeclaration(
2553
98
          getCurScope(), AS, /*UsingLoc*/ SourceLocation(),
2554
98
          /*TypenameLoc*/ SourceLocation(), SS, Name,
2555
98
          /*EllipsisLoc*/ SourceLocation(),
2556
98
          /*AttrList*/ ParsedAttributesView())));
2557
98
    }
2558
718k
  }
2559
2560
  // static_assert-declaration. A templated static_assert declaration is
2561
  // diagnosed in Parser::ParseSingleDeclarationAfterTemplate.
2562
2.74M
  if (!TemplateInfo.Kind &&
2563
2.54M
      Tok.isOneOf(tok::kw_static_assert, tok::kw__Static_assert)) {
2564
14.5k
    SourceLocation DeclEnd;
2565
14.5k
    return DeclGroupPtrTy::make(
2566
14.5k
        DeclGroupRef(ParseStaticAssertDeclaration(DeclEnd)));
2567
14.5k
  }
2568
2569
2.73M
  if (Tok.is(tok::kw_template)) {
2570
206k
    assert(!TemplateInfo.TemplateParams &&
2571
206k
           "Nested template improperly parsed?");
2572
206k
    ObjCDeclContextSwitch ObjCDC(*this);
2573
206k
    SourceLocation DeclEnd;
2574
206k
    return DeclGroupPtrTy::make(
2575
206k
        DeclGroupRef(ParseTemplateDeclarationOrSpecialization(
2576
206k
            DeclaratorContext::Member, DeclEnd, AccessAttrs, AS)));
2577
206k
  }
2578
2579
  // Handle:  member-declaration ::= '__extension__' member-declaration
2580
2.52M
  if (Tok.is(tok::kw___extension__)) {
2581
    // __extension__ silences extension warnings in the subexpression.
2582
404
    ExtensionRAIIObject O(Diags);  // Use RAII to do this.
2583
404
    ConsumeToken();
2584
404
    return ParseCXXClassMemberDeclaration(AS, AccessAttrs,
2585
404
                                          TemplateInfo, TemplateDiags);
2586
404
  }
2587
2588
2.52M
  ParsedAttributesWithRange attrs(AttrFactory);
2589
2.52M
  ParsedAttributesViewWithRange FnAttrs;
2590
  // Optional C++11 attribute-specifier
2591
2.52M
  MaybeParseCXX11Attributes(attrs);
2592
  // We need to keep these attributes for future diagnostic
2593
  // before they are taken over by declaration specifier.
2594
2.52M
  FnAttrs.addAll(attrs.begin(), attrs.end());
2595
2.52M
  FnAttrs.Range = attrs.Range;
2596
2597
2.52M
  MaybeParseMicrosoftAttributes(attrs);
2598
2599
2.52M
  if (Tok.is(tok::kw_using)) {
2600
47.1k
    ProhibitAttributes(attrs);
2601
2602
    // Eat 'using'.
2603
47.1k
    SourceLocation UsingLoc = ConsumeToken();
2604
2605
    // Consume unexpected 'template' keywords.
2606
47.1k
    while (Tok.is(tok::kw_template)) {
2607
1
      SourceLocation TemplateLoc = ConsumeToken();
2608
1
      Diag(TemplateLoc, diag::err_unexpected_template_after_using)
2609
1
          << FixItHint::CreateRemoval(TemplateLoc);
2610
1
    }
2611
2612
47.1k
    if (Tok.is(tok::kw_namespace)) {
2613
3
      Diag(UsingLoc, diag::err_using_namespace_in_class);
2614
3
      SkipUntil(tok::semi, StopBeforeMatch);
2615
3
      return nullptr;
2616
3
    }
2617
47.1k
    SourceLocation DeclEnd;
2618
    // Otherwise, it must be a using-declaration or an alias-declaration.
2619
47.1k
    return ParseUsingDeclaration(DeclaratorContext::Member, TemplateInfo,
2620
47.1k
                                 UsingLoc, DeclEnd, AS);
2621
47.1k
  }
2622
2623
  // Hold late-parsed attributes so we can attach a Decl to them later.
2624
2.47M
  LateParsedAttrList CommonLateParsedAttrs;
2625
2626
  // decl-specifier-seq:
2627
  // Parse the common declaration-specifiers piece.
2628
2.47M
  ParsingDeclSpec DS(*this, TemplateDiags);
2629
2.47M
  DS.takeAttributesFrom(attrs);
2630
2.47M
  if (MalformedTypeSpec)
2631
2
    DS.SetTypeSpecError();
2632
2633
2.47M
  ParseDeclarationSpecifiers(DS, TemplateInfo, AS, DeclSpecContext::DSC_class,
2634
2.47M
                             &CommonLateParsedAttrs);
2635
2636
  // Turn off colon protection that was set for declspec.
2637
2.47M
  X.restore();
2638
2639
  // If we had a free-standing type definition with a missing semicolon, we
2640
  // may get this far before the problem becomes obvious.
2641
2.47M
  if (DS.hasTagDefinition() &&
2642
40.6k
      TemplateInfo.Kind == ParsedTemplateInfo::NonTemplate &&
2643
40.6k
      DiagnoseMissingSemiAfterTagDefinition(DS, AS, DeclSpecContext::DSC_class,
2644
40.6k
                                            &CommonLateParsedAttrs))
2645
0
    return nullptr;
2646
2647
2.47M
  MultiTemplateParamsArg TemplateParams(
2648
181k
      TemplateInfo.TemplateParams? TemplateInfo.TemplateParams->data()
2649
2.29M
                                 : nullptr,
2650
2.29M
      TemplateInfo.TemplateParams? 
TemplateInfo.TemplateParams->size()181k
: 0);
2651
2652
2.47M
  if (TryConsumeToken(tok::semi)) {
2653
66.8k
    if (DS.isFriendSpecified())
2654
19.0k
      ProhibitAttributes(FnAttrs);
2655
2656
66.8k
    RecordDecl *AnonRecord = nullptr;
2657
66.8k
    Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(
2658
66.8k
        getCurScope(), AS, DS, TemplateParams, false, AnonRecord);
2659
66.8k
    DS.complete(TheDecl);
2660
66.8k
    if (AnonRecord) {
2661
0
      Decl* decls[] = {AnonRecord, TheDecl};
2662
0
      return Actions.BuildDeclaratorGroup(decls);
2663
0
    }
2664
66.8k
    return Actions.ConvertDeclToDeclGroup(TheDecl);
2665
66.8k
  }
2666
2667
2.41M
  ParsingDeclarator DeclaratorInfo(*this, DS, DeclaratorContext::Member);
2668
2.41M
  if (TemplateInfo.TemplateParams)
2669
163k
    DeclaratorInfo.setTemplateParameterLists(TemplateParams);
2670
2.41M
  VirtSpecifiers VS;
2671
2672
  // Hold late-parsed attributes so we can attach a Decl to them later.
2673
2.41M
  LateParsedAttrList LateParsedAttrs;
2674
2675
2.41M
  SourceLocation EqualLoc;
2676
2.41M
  SourceLocation PureSpecLoc;
2677
2678
12.7k
  auto TryConsumePureSpecifier = [&] (bool AllowDefinition) {
2679
12.7k
    if (Tok.isNot(tok::equal))
2680
7.60k
      return false;
2681
2682
5.13k
    auto &Zero = NextToken();
2683
5.13k
    SmallString<8> Buffer;
2684
5.13k
    if (Zero.isNot(tok::numeric_constant) ||
2685
4.64k
        PP.getSpelling(Zero, Buffer) != "0")
2686
514
      return false;
2687
2688
4.62k
    auto &After = GetLookAheadToken(2);
2689
4.62k
    if (!After.isOneOf(tok::semi, tok::comma) &&
2690
3
        !(AllowDefinition &&
2691
3
          After.isOneOf(tok::l_brace, tok::colon, tok::kw_try)))
2692
0
      return false;
2693
2694
4.62k
    EqualLoc = ConsumeToken();
2695
4.62k
    PureSpecLoc = ConsumeToken();
2696
4.62k
    return true;
2697
4.62k
  };
2698
2699
2.41M
  SmallVector<Decl *, 8> DeclsInGroup;
2700
2.41M
  ExprResult BitfieldSize;
2701
2.41M
  ExprResult TrailingRequiresClause;
2702
2.41M
  bool ExpectSemi = true;
2703
2704
  // Parse the first declarator.
2705
2.41M
  if (ParseCXXMemberDeclaratorBeforeInitializer(
2706
93
          DeclaratorInfo, VS, BitfieldSize, LateParsedAttrs)) {
2707
93
    TryConsumeToken(tok::semi);
2708
93
    return nullptr;
2709
93
  }
2710
2711
  // Check for a member function definition.
2712
2.41M
  if (BitfieldSize.isUnset()) {
2713
    // MSVC permits pure specifier on inline functions defined at class scope.
2714
    // Hence check for =0 before checking for function definition.
2715
2.40M
    if (getLangOpts().MicrosoftExt && 
DeclaratorInfo.isDeclarationOfFunction()12.3k
)
2716
8.13k
      TryConsumePureSpecifier(/*AllowDefinition*/ true);
2717
2718
2.40M
    FunctionDefinitionKind DefinitionKind = FunctionDefinitionKind::Declaration;
2719
    // function-definition:
2720
    //
2721
    // In C++11, a non-function declarator followed by an open brace is a
2722
    // braced-init-list for an in-class member initialization, not an
2723
    // erroneous function definition.
2724
2.40M
    if (Tok.is(tok::l_brace) && 
!getLangOpts().CPlusPlus11492k
) {
2725
2.09k
      DefinitionKind = FunctionDefinitionKind::Definition;
2726
2.40M
    } else if (DeclaratorInfo.isFunctionDeclarator()) {
2727
1.00M
      if (Tok.isOneOf(tok::l_brace, tok::colon, tok::kw_try)) {
2728
606k
        DefinitionKind = FunctionDefinitionKind::Definition;
2729
397k
      } else if (Tok.is(tok::equal)) {
2730
35.7k
        const Token &KW = NextToken();
2731
35.7k
        if (KW.is(tok::kw_default))
2732
21.0k
          DefinitionKind = FunctionDefinitionKind::Defaulted;
2733
14.6k
        else if (KW.is(tok::kw_delete))
2734
10.0k
          DefinitionKind = FunctionDefinitionKind::Deleted;
2735
4.61k
        else if (KW.is(tok::code_completion)) {
2736
7
          Actions.CodeCompleteAfterFunctionEquals(DeclaratorInfo);
2737
7
          cutOffParsing();
2738
7
          return nullptr;
2739
7
        }
2740
2.40M
      }
2741
1.00M
    }
2742
2.40M
    DeclaratorInfo.setFunctionDefinitionKind(DefinitionKind);
2743
2744
    // C++11 [dcl.attr.grammar] p4: If an attribute-specifier-seq appertains
2745
    // to a friend declaration, that declaration shall be a definition.
2746
2.40M
    if (DeclaratorInfo.isFunctionDeclarator() &&
2747
1.00M
        DefinitionKind == FunctionDefinitionKind::Declaration &&
2748
366k
        DS.isFriendSpecified()) {
2749
      // Diagnose attributes that appear before decl specifier:
2750
      // [[]] friend int foo();
2751
21.1k
      ProhibitAttributes(FnAttrs);
2752
21.1k
    }
2753
2754
2.40M
    if (DefinitionKind != FunctionDefinitionKind::Declaration) {
2755
639k
      if (!DeclaratorInfo.isFunctionDeclarator()) {
2756
2
        Diag(DeclaratorInfo.getIdentifierLoc(), diag::err_func_def_no_params);
2757
2
        ConsumeBrace();
2758
2
        SkipUntil(tok::r_brace);
2759
2760
        // Consume the optional ';'
2761
2
        TryConsumeToken(tok::semi);
2762
2763
2
        return nullptr;
2764
2
      }
2765
2766
639k
      if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
2767
12
        Diag(DeclaratorInfo.getIdentifierLoc(),
2768
12
             diag::err_function_declared_typedef);
2769
2770
        // Recover by treating the 'typedef' as spurious.
2771
12
        DS.ClearStorageClassSpecs();
2772
12
      }
2773
2774
639k
      Decl *FunDecl =
2775
639k
        ParseCXXInlineMethodDef(AS, AccessAttrs, DeclaratorInfo, TemplateInfo,
2776
639k
                                VS, PureSpecLoc);
2777
2778
639k
      if (FunDecl) {
2779
639k
        for (unsigned i = 0, ni = CommonLateParsedAttrs.size(); i < ni; 
++i0
) {
2780
0
          CommonLateParsedAttrs[i]->addDecl(FunDecl);
2781
0
        }
2782
643k
        for (unsigned i = 0, ni = LateParsedAttrs.size(); i < ni; 
++i3.55k
) {
2783
3.55k
          LateParsedAttrs[i]->addDecl(FunDecl);
2784
3.55k
        }
2785
639k
      }
2786
639k
      LateParsedAttrs.clear();
2787
2788
      // Consume the ';' - it's optional unless we have a delete or default
2789
639k
      if (Tok.is(tok::semi))
2790
902
        ConsumeExtraSemi(AfterMemberFunctionDefinition);
2791
2792
639k
      return DeclGroupPtrTy::make(DeclGroupRef(FunDecl));
2793
639k
    }
2794
2.40M
  }
2795
2796
  // member-declarator-list:
2797
  //   member-declarator
2798
  //   member-declarator-list ',' member-declarator
2799
2800
1.79M
  
while (1.77M
1) {
2801
1.79M
    InClassInitStyle HasInClassInit = ICIS_NoInit;
2802
1.79M
    bool HasStaticInitializer = false;
2803
1.79M
    if (Tok.isOneOf(tok::equal, tok::l_brace) && 
PureSpecLoc.isInvalid()170k
) {
2804
      // DRXXXX: Anonymous bit-fields cannot have a brace-or-equal-initializer.
2805
170k
      if (BitfieldSize.isUsable() && 
!DeclaratorInfo.hasName()21
) {
2806
        // Diagnose the error and pretend there is no in-class initializer.
2807
7
        Diag(Tok, diag::err_anon_bitfield_member_init);
2808
7
        SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2809
170k
      } else if (DeclaratorInfo.isDeclarationOfFunction()) {
2810
        // It's a pure-specifier.
2811
4.61k
        if (!TryConsumePureSpecifier(/*AllowFunctionDefinition*/ false))
2812
          // Parse it as an expression so that Sema can diagnose it.
2813
23
          HasStaticInitializer = true;
2814
165k
      } else if (DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
2815
165k
                     DeclSpec::SCS_static &&
2816
2.97k
                 DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
2817
2.97k
                     DeclSpec::SCS_typedef &&
2818
2.96k
                 !DS.isFriendSpecified()) {
2819
        // It's a default member initializer.
2820
2.96k
        if (BitfieldSize.get())
2821
14
          Diag(Tok, getLangOpts().CPlusPlus20
2822
12
                        ? diag::warn_cxx17_compat_bitfield_member_init
2823
2
                        : diag::ext_bitfield_member_init);
2824
2.89k
        HasInClassInit = Tok.is(tok::equal) ? ICIS_CopyInit : 
ICIS_ListInit69
;
2825
163k
      } else {
2826
163k
        HasStaticInitializer = true;
2827
163k
      }
2828
170k
    }
2829
2830
    // NOTE: If Sema is the Action module and declarator is an instance field,
2831
    // this call will *not* return the created decl; It will return null.
2832
    // See Sema::ActOnCXXMemberDeclarator for details.
2833
2834
1.79M
    NamedDecl *ThisDecl = nullptr;
2835
1.79M
    if (DS.isFriendSpecified()) {
2836
      // C++11 [dcl.attr.grammar] p4: If an attribute-specifier-seq appertains
2837
      // to a friend declaration, that declaration shall be a definition.
2838
      //
2839
      // Diagnose attributes that appear in a friend member function declarator:
2840
      //   friend int foo [[]] ();
2841
21.1k
      SmallVector<SourceRange, 4> Ranges;
2842
21.1k
      DeclaratorInfo.getCXX11AttributeRanges(Ranges);
2843
21.1k
      for (SmallVectorImpl<SourceRange>::iterator I = Ranges.begin(),
2844
21.1k
           E = Ranges.end(); I != E; 
++I4
)
2845
4
        Diag((*I).getBegin(), diag::err_attributes_not_allowed) << *I;
2846
2847
21.1k
      ThisDecl = Actions.ActOnFriendFunctionDecl(getCurScope(), DeclaratorInfo,
2848
21.1k
                                                 TemplateParams);
2849
1.77M
    } else {
2850
1.77M
      ThisDecl = Actions.ActOnCXXMemberDeclarator(getCurScope(), AS,
2851
1.77M
                                                  DeclaratorInfo,
2852
1.77M
                                                  TemplateParams,
2853
1.77M
                                                  BitfieldSize.get(),
2854
1.77M
                                                  VS, HasInClassInit);
2855
2856
1.77M
      if (VarTemplateDecl *VT =
2857
485
              ThisDecl ? dyn_cast<VarTemplateDecl>(ThisDecl) : nullptr)
2858
        // Re-direct this decl to refer to the templated decl so that we can
2859
        // initialize it.
2860
485
        ThisDecl = VT->getTemplatedDecl();
2861
2862
1.77M
      if (ThisDecl)
2863
1.77M
        Actions.ProcessDeclAttributeList(getCurScope(), ThisDecl, AccessAttrs);
2864
1.77M
    }
2865
2866
    // Error recovery might have converted a non-static member into a static
2867
    // member.
2868
1.79M
    if (HasInClassInit != ICIS_NoInit &&
2869
2.96k
        DeclaratorInfo.getDeclSpec().getStorageClassSpec() ==
2870
6
            DeclSpec::SCS_static) {
2871
6
      HasInClassInit = ICIS_NoInit;
2872
6
      HasStaticInitializer = true;
2873
6
    }
2874
2875
1.79M
    if (ThisDecl && 
PureSpecLoc.isValid()1.79M
)
2876
4.62k
      Actions.ActOnPureSpecifier(ThisDecl, PureSpecLoc);
2877
2878
    // Handle the initializer.
2879
1.79M
    if (HasInClassInit != ICIS_NoInit) {
2880
      // The initializer was deferred; parse it and cache the tokens.
2881
2.96k
      Diag(Tok, getLangOpts().CPlusPlus11
2882
2.94k
                    ? diag::warn_cxx98_compat_nonstatic_member_init
2883
21
                    : diag::ext_nonstatic_member_init);
2884
2885
2.96k
      if (DeclaratorInfo.isArrayOfUnknownBound()) {
2886
        // C++11 [dcl.array]p3: An array bound may also be omitted when the
2887
        // declarator is followed by an initializer.
2888
        //
2889
        // A brace-or-equal-initializer for a member-declarator is not an
2890
        // initializer in the grammar, so this is ill-formed.
2891
4
        Diag(Tok, diag::err_incomplete_array_member_init);
2892
4
        SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2893
2894
        // Avoid later warnings about a class member of incomplete type.
2895
4
        if (ThisDecl)
2896
3
          ThisDecl->setInvalidDecl();
2897
4
      } else
2898
2.95k
        ParseCXXNonStaticMemberInitializer(ThisDecl);
2899
1.79M
    } else if (HasStaticInitializer) {
2900
      // Normal initializer.
2901
163k
      ExprResult Init = ParseCXXMemberInitializer(
2902
163k
          ThisDecl, DeclaratorInfo.isDeclarationOfFunction(), EqualLoc);
2903
2904
163k
      if (Init.isInvalid())
2905
10
        SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
2906
163k
      else if (ThisDecl)
2907
163k
        Actions.AddInitializerToDecl(ThisDecl, Init.get(), EqualLoc.isInvalid());
2908
1.62M
    } else if (ThisDecl && 
DS.getStorageClassSpec() == DeclSpec::SCS_static1.62M
)
2909
      // No initializer.
2910
40.0k
      Actions.ActOnUninitializedDecl(ThisDecl);
2911
2912
1.79M
    if (ThisDecl) {
2913
1.79M
      if (!ThisDecl->isInvalidDecl()) {
2914
        // Set the Decl for any late parsed attributes
2915
1.79M
        for (unsigned i = 0, ni = CommonLateParsedAttrs.size(); i < ni; 
++i21
)
2916
21
          CommonLateParsedAttrs[i]->addDecl(ThisDecl);
2917
2918
1.79M
        for (unsigned i = 0, ni = LateParsedAttrs.size(); i < ni; 
++i1.64k
)
2919
1.64k
          LateParsedAttrs[i]->addDecl(ThisDecl);
2920
1.79M
      }
2921
1.79M
      Actions.FinalizeDeclaration(ThisDecl);
2922
1.79M
      DeclsInGroup.push_back(ThisDecl);
2923
2924
1.79M
      if (DeclaratorInfo.isFunctionDeclarator() &&
2925
366k
          DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
2926
366k
              DeclSpec::SCS_typedef)
2927
355k
        HandleMemberFunctionDeclDelays(DeclaratorInfo, ThisDecl);
2928
1.79M
    }
2929
1.79M
    LateParsedAttrs.clear();
2930
2931
1.79M
    DeclaratorInfo.complete(ThisDecl);
2932
2933
    // If we don't have a comma, it is either the end of the list (a ';')
2934
    // or an error, bail out.
2935
1.79M
    SourceLocation CommaLoc;
2936
1.79M
    if (!TryConsumeToken(tok::comma, CommaLoc))
2937
1.77M
      break;
2938
2939
22.0k
    if (Tok.isAtStartOfLine() &&
2940
18.2k
        !MightBeDeclarator(DeclaratorContext::Member)) {
2941
      // This comma was followed by a line-break and something which can't be
2942
      // the start of a declarator. The comma was probably a typo for a
2943
      // semicolon.
2944
43
      Diag(CommaLoc, diag::err_expected_semi_declaration)
2945
43
        << FixItHint::CreateReplacement(CommaLoc, ";");
2946
43
      ExpectSemi = false;
2947
43
      break;
2948
43
    }
2949
2950
    // Parse the next declarator.
2951
22.0k
    DeclaratorInfo.clear();
2952
22.0k
    VS.clear();
2953
22.0k
    BitfieldSize = ExprResult(/*Invalid=*/false);
2954
22.0k
    EqualLoc = PureSpecLoc = SourceLocation();
2955
22.0k
    DeclaratorInfo.setCommaLoc(CommaLoc);
2956
2957
    // GNU attributes are allowed before the second and subsequent declarator.
2958
    // However, this does not apply for [[]] attributes (which could show up
2959
    // before or after the __attribute__ attributes).
2960
22.0k
    DiagnoseAndSkipCXX11Attributes();
2961
22.0k
    MaybeParseGNUAttributes(DeclaratorInfo);
2962
22.0k
    DiagnoseAndSkipCXX11Attributes();
2963
2964
22.0k
    if (ParseCXXMemberDeclaratorBeforeInitializer(
2965
22.0k
            DeclaratorInfo, VS, BitfieldSize, LateParsedAttrs))
2966
6
      break;
2967
22.0k
  }
2968
2969
1.77M
  if (ExpectSemi &&
2970
1.77M
      ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list)) {
2971
    // Skip to end of block or statement.
2972
41
    SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
2973
    // If we stopped at a ';', eat it.
2974
41
    TryConsumeToken(tok::semi);
2975
41
    return nullptr;
2976
41
  }
2977
2978
1.77M
  return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, DeclsInGroup);
2979
1.77M
}
2980
2981
/// ParseCXXMemberInitializer - Parse the brace-or-equal-initializer.
2982
/// Also detect and reject any attempted defaulted/deleted function definition.
2983
/// The location of the '=', if any, will be placed in EqualLoc.
2984
///
2985
/// This does not check for a pure-specifier; that's handled elsewhere.
2986
///
2987
///   brace-or-equal-initializer:
2988
///     '=' initializer-expression
2989
///     braced-init-list
2990
///
2991
///   initializer-clause:
2992
///     assignment-expression
2993
///     braced-init-list
2994
///
2995
///   defaulted/deleted function-definition:
2996
///     '=' 'default'
2997
///     '=' 'delete'
2998
///
2999
/// Prior to C++0x, the assignment-expression in an initializer-clause must
3000
/// be a constant-expression.
3001
ExprResult Parser::ParseCXXMemberInitializer(Decl *D, bool IsFunction,
3002
165k
                                             SourceLocation &EqualLoc) {
3003
165k
  assert(Tok.isOneOf(tok::equal, tok::l_brace)
3004
165k
         && "Data member initializer not starting with '=' or '{'");
3005
3006
165k
  EnterExpressionEvaluationContext Context(
3007
165k
      Actions, Sema::ExpressionEvaluationContext::PotentiallyEvaluated, D);
3008
165k
  if (TryConsumeToken(tok::equal, EqualLoc)) {
3009
165k
    if (Tok.is(tok::kw_delete)) {
3010
      // In principle, an initializer of '= delete p;' is legal, but it will
3011
      // never type-check. It's better to diagnose it as an ill-formed expression
3012
      // than as an ill-formed deleted non-function member.
3013
      // An initializer of '= delete p, foo' will never be parsed, because
3014
      // a top-level comma always ends the initializer expression.
3015
2
      const Token &Next = NextToken();
3016
2
      if (IsFunction || Next.isOneOf(tok::semi, tok::comma, tok::eof)) {
3017
2
        if (IsFunction)
3018
0
          Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
3019
0
            << 1 /* delete */;
3020
2
        else
3021
2
          Diag(ConsumeToken(), diag::err_deleted_non_function);
3022
2
        return ExprError();
3023
2
      }
3024
165k
    } else if (Tok.is(tok::kw_default)) {
3025
0
      if (IsFunction)
3026
0
        Diag(Tok, diag::err_default_delete_in_multiple_declaration)
3027
0
          << 0 /* default */;
3028
0
      else
3029
0
        Diag(ConsumeToken(), diag::err_default_special_members)
3030
0
            << getLangOpts().CPlusPlus20;
3031
0
      return ExprError();
3032
0
    }
3033
165k
  }
3034
165k
  if (const auto *PD = dyn_cast_or_null<MSPropertyDecl>(D)) {
3035
1
    Diag(Tok, diag::err_ms_property_initializer) << PD;
3036
1
    return ExprError();
3037
1
  }
3038
165k
  return ParseInitializer();
3039
165k
}
3040
3041
void Parser::SkipCXXMemberSpecification(SourceLocation RecordLoc,
3042
                                        SourceLocation AttrFixitLoc,
3043
254
                                        unsigned TagType, Decl *TagDecl) {
3044
  // Skip the optional 'final' keyword.
3045
254
  if (getLangOpts().CPlusPlus && Tok.is(tok::identifier)) {
3046
0
    assert(isCXX11FinalKeyword() && "not a class definition");
3047
0
    ConsumeToken();
3048
3049
    // Diagnose any C++11 attributes after 'final' keyword.
3050
    // We deliberately discard these attributes.
3051
0
    ParsedAttributesWithRange Attrs(AttrFactory);
3052
0
    CheckMisplacedCXX11Attribute(Attrs, AttrFixitLoc);
3053
3054
    // This can only happen if we had malformed misplaced attributes;
3055
    // we only get called if there is a colon or left-brace after the
3056
    // attributes.
3057
0
    if (Tok.isNot(tok::colon) && Tok.isNot(tok::l_brace))
3058
0
      return;
3059
254
  }
3060
3061
  // Skip the base clauses. This requires actually parsing them, because
3062
  // otherwise we can't be sure where they end (a left brace may appear
3063
  // within a template argument).
3064
254
  if (Tok.is(tok::colon)) {
3065
    // Enter the scope of the class so that we can correctly parse its bases.
3066
47
    ParseScope ClassScope(this, Scope::ClassScope|Scope::DeclScope);
3067
47
    ParsingClassDefinition ParsingDef(*this, TagDecl, /*NonNestedClass*/ true,
3068
47
                                      TagType == DeclSpec::TST_interface);
3069
47
    auto OldContext =
3070
47
        Actions.ActOnTagStartSkippedDefinition(getCurScope(), TagDecl);
3071
3072
    // Parse the bases but don't attach them to the class.
3073
47
    ParseBaseClause(nullptr);
3074
3075
47
    Actions.ActOnTagFinishSkippedDefinition(OldContext);
3076
3077
47
    if (!Tok.is(tok::l_brace)) {
3078
0
      Diag(PP.getLocForEndOfToken(PrevTokLocation),
3079
0
           diag::err_expected_lbrace_after_base_specifiers);
3080
0
      return;
3081
0
    }
3082
254
  }
3083
3084
  // Skip the body.
3085
254
  assert(Tok.is(tok::l_brace));
3086
254
  BalancedDelimiterTracker T(*this, tok::l_brace);
3087
254
  T.consumeOpen();
3088
254
  T.skipToEnd();
3089
3090
  // Parse and discard any trailing attributes.
3091
254
  ParsedAttributes Attrs(AttrFactory);
3092
254
  if (Tok.is(tok::kw___attribute))
3093
5
    MaybeParseGNUAttributes(Attrs);
3094
254
}
3095
3096
Parser::DeclGroupPtrTy Parser::ParseCXXClassMemberDeclarationWithPragmas(
3097
    AccessSpecifier &AS, ParsedAttributesWithRange &AccessAttrs,
3098
2.68M
    DeclSpec::TST TagType, Decl *TagDecl) {
3099
2.68M
  ParenBraceBracketBalancer BalancerRAIIObj(*this);
3100
3101
2.68M
  switch (Tok.getKind()) {
3102
5
  case tok::kw___if_exists:
3103
8
  case tok::kw___if_not_exists:
3104
8
    ParseMicrosoftIfExistsClassDeclaration(TagType, AccessAttrs, AS);
3105
8
    return nullptr;
3106
3107
39
  case tok::semi:
3108
    // Check for extraneous top-level semicolon.
3109
39
    ConsumeExtraSemi(InsideStruct, TagType);
3110
39
    return nullptr;
3111
3112
    // Handle pragmas that can appear as member declarations.
3113
2
  case tok::annot_pragma_vis:
3114
2
    HandlePragmaVisibility();
3115
2
    return nullptr;
3116
0
  case tok::annot_pragma_pack:
3117
0
    HandlePragmaPack();
3118
0
    return nullptr;
3119
1
  case tok::annot_pragma_align:
3120
1
    HandlePragmaAlign();
3121
1
    return nullptr;
3122
0
  case tok::annot_pragma_ms_pointers_to_members:
3123
0
    HandlePragmaMSPointersToMembers();
3124
0
    return nullptr;
3125
6
  case tok::annot_pragma_ms_pragma:
3126
6
    HandlePragmaMSPragma();
3127
6
    return nullptr;
3128
2
  case tok::annot_pragma_ms_vtordisp:
3129
2
    HandlePragmaMSVtorDisp();
3130
2
    return nullptr;
3131
0
  case tok::annot_pragma_dump:
3132
0
    HandlePragmaDump();
3133
0
    return nullptr;
3134
3135
2
  case tok::kw_namespace:
3136
    // If we see a namespace here, a close brace was missing somewhere.
3137
2
    DiagnoseUnexpectedNamespace(cast<NamedDecl>(TagDecl));
3138
2
    return nullptr;
3139
3140
39.1k
  case tok::kw_private:
3141
    // FIXME: We don't accept GNU attributes on access specifiers in OpenCL mode
3142
    // yet.
3143
39.1k
    if (getLangOpts().OpenCL && 
!NextToken().is(tok::colon)6
)
3144
4
      return ParseCXXClassMemberDeclaration(AS, AccessAttrs);
3145
39.1k
    LLVM_FALLTHROUGH;
3146
134k
  case tok::kw_public:
3147
148k
  case tok::kw_protected: {
3148
148k
    AccessSpecifier NewAS = getAccessSpecifierIfPresent();
3149
148k
    assert(NewAS != AS_none);
3150
    // Current token is a C++ access specifier.
3151
148k
    AS = NewAS;
3152
148k
    SourceLocation ASLoc = Tok.getLocation();
3153
148k
    unsigned TokLength = Tok.getLength();
3154
148k
    ConsumeToken();
3155
148k
    AccessAttrs.clear();
3156
148k
    MaybeParseGNUAttributes(AccessAttrs);
3157
3158
148k
    SourceLocation EndLoc;
3159
148k
    if (TryConsumeToken(tok::colon, EndLoc)) {
3160
10
    } else if (TryConsumeToken(tok::semi, EndLoc)) {
3161
3
      Diag(EndLoc, diag::err_expected)
3162
3
          << tok::colon << FixItHint::CreateReplacement(EndLoc, ":");
3163
7
    } else {
3164
7
      EndLoc = ASLoc.getLocWithOffset(TokLength);
3165
7
      Diag(EndLoc, diag::err_expected)
3166
7
          << tok::colon << FixItHint::CreateInsertion(EndLoc, ":");
3167
7
    }
3168
3169
    // The Microsoft extension __interface does not permit non-public
3170
    // access specifiers.
3171
148k
    if (TagType == DeclSpec::TST_interface && 
AS != AS_public5
) {
3172
4
      Diag(ASLoc, diag::err_access_specifier_interface) << (AS == AS_protected);
3173
4
    }
3174
3175
148k
    if (Actions.ActOnAccessSpecifier(NewAS, ASLoc, EndLoc, AccessAttrs)) {
3176
      // found another attribute than only annotations
3177
1
      AccessAttrs.clear();
3178
1
    }
3179
3180
148k
    return nullptr;
3181
134k
  }
3182
3183
633
  case tok::annot_pragma_openmp:
3184
633
    return ParseOpenMPDeclarativeDirectiveWithExtDecl(
3185
633
        AS, AccessAttrs, /*Delayed=*/true, TagType, TagDecl);
3186
3187
2.54M
  default:
3188
2.54M
    if (tok::isPragmaAnnotation(Tok.getKind())) {
3189
4
      Diag(Tok.getLocation(), diag::err_pragma_misplaced_in_decl)
3190
4
          << DeclSpec::getSpecifierName(TagType,
3191
4
                                   Actions.getASTContext().getPrintingPolicy());
3192
4
      ConsumeAnnotationToken();
3193
4
      return nullptr;
3194
4
    }
3195
2.54M
    return ParseCXXClassMemberDeclaration(AS, AccessAttrs);
3196
2.68M
  }
3197
2.68M
}
3198
3199
/// ParseCXXMemberSpecification - Parse the class definition.
3200
///
3201
///       member-specification:
3202
///         member-declaration member-specification[opt]
3203
///         access-specifier ':' member-specification[opt]
3204
///
3205
void Parser::ParseCXXMemberSpecification(SourceLocation RecordLoc,
3206
                                         SourceLocation AttrFixitLoc,
3207
                                         ParsedAttributesWithRange &Attrs,
3208
642k
                                         unsigned TagType, Decl *TagDecl) {
3209
642k
  assert((TagType == DeclSpec::TST_struct ||
3210
642k
         TagType == DeclSpec::TST_interface ||
3211
642k
         TagType == DeclSpec::TST_union  ||
3212
642k
         TagType == DeclSpec::TST_class) && "Invalid TagType!");
3213
3214
1
  llvm::TimeTraceScope TimeScope("ParseClass", [&]() {
3215
1
    if (auto *TD = dyn_cast_or_null<NamedDecl>(TagDecl))
3216
1
      return TD->getQualifiedNameAsString();
3217
0
    return std::string("<anonymous>");
3218
0
  });
3219
3220
642k
  PrettyDeclStackTraceEntry CrashInfo(Actions.Context, TagDecl, RecordLoc,
3221
642k
                                      "parsing struct/union/class body");
3222
3223
  // Determine whether this is a non-nested class. Note that local
3224
  // classes are *not* considered to be nested classes.
3225
642k
  bool NonNestedClass = true;
3226
642k
  if (!ClassStack.empty()) {
3227
53.1k
    for (const Scope *S = getCurScope(); S; 
S = S->getParent()10.7k
) {
3228
53.1k
      if (S->isClassScope()) {
3229
        // We're inside a class scope, so this is a nested class.
3230
39.4k
        NonNestedClass = false;
3231
3232
        // The Microsoft extension __interface does not permit nested classes.
3233
39.4k
        if (getCurrentClass().IsInterface) {
3234
1
          Diag(RecordLoc, diag::err_invalid_member_in_interface)
3235
1
            << /*ErrorType=*/6
3236
1
            << (isa<NamedDecl>(TagDecl)
3237
1
                  ? cast<NamedDecl>(TagDecl)->getQualifiedNameAsString()
3238
0
                  : "(anonymous)");
3239
1
        }
3240
39.4k
        break;
3241
39.4k
      }
3242
3243
13.7k
      if ((S->getFlags() & Scope::FnScope))
3244
        // If we're in a function or function template then this is a local
3245
        // class rather than a nested class.
3246
3.00k
        break;
3247
13.7k
    }
3248
42.4k
  }
3249
3250
  // Enter a scope for the class.
3251
642k
  ParseScope ClassScope(this, Scope::ClassScope|Scope::DeclScope);
3252
3253
  // Note that we are parsing a new (potentially-nested) class definition.
3254
642k
  ParsingClassDefinition ParsingDef(*this, TagDecl, NonNestedClass,
3255
642k
                                    TagType == DeclSpec::TST_interface);
3256
3257
642k
  if (TagDecl)
3258
642k
    Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
3259
3260
642k
  SourceLocation FinalLoc;
3261
642k
  bool IsFinalSpelledSealed = false;
3262
3263
  // Parse the optional 'final' keyword.
3264
642k
  if (getLangOpts().CPlusPlus && Tok.is(tok::identifier)) {
3265
112
    VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier(Tok);
3266
112
    assert((Specifier == VirtSpecifiers::VS_Final ||
3267
112
            Specifier == VirtSpecifiers::VS_GNU_Final ||
3268
112
            Specifier == VirtSpecifiers::VS_Sealed) &&
3269
112
           "not a class definition");
3270
112
    FinalLoc = ConsumeToken();
3271
112
    IsFinalSpelledSealed = Specifier == VirtSpecifiers::VS_Sealed;
3272
3273
112
    if (TagType == DeclSpec::TST_interface)
3274
4
      Diag(FinalLoc, diag::err_override_control_interface)
3275
4
        << VirtSpecifiers::getSpecifierName(Specifier);
3276
108
    else if (Specifier == VirtSpecifiers::VS_Final)
3277
94
      Diag(FinalLoc, getLangOpts().CPlusPlus11
3278
92
                         ? diag::warn_cxx98_compat_override_control_keyword
3279
2
                         : diag::ext_override_control_keyword)
3280
94
        << VirtSpecifiers::getSpecifierName(Specifier);
3281
14
    else if (Specifier == VirtSpecifiers::VS_Sealed)
3282
12
      Diag(FinalLoc, diag::ext_ms_sealed_keyword);
3283
2
    else if (Specifier == VirtSpecifiers::VS_GNU_Final)
3284
2
      Diag(FinalLoc, diag::ext_warn_gnu_final);
3285
3286
    // Parse any C++11 attributes after 'final' keyword.
3287
    // These attributes are not allowed to appear here,
3288
    // and the only possible place for them to appertain
3289
    // to the class would be between class-key and class-name.
3290
112
    CheckMisplacedCXX11Attribute(Attrs, AttrFixitLoc);
3291
3292
    // ParseClassSpecifier() does only a superficial check for attributes before
3293
    // deciding to call this method.  For example, for
3294
    // `class C final alignas ([l) {` it will decide that this looks like a
3295
    // misplaced attribute since it sees `alignas '(' ')'`.  But the actual
3296
    // attribute parsing code will try to parse the '[' as a constexpr lambda
3297
    // and consume enough tokens that the alignas parsing code will eat the
3298
    // opening '{'.  So bail out if the next token isn't one we expect.
3299
112
    if (!Tok.is(tok::colon) && 
!Tok.is(tok::l_brace)52
) {
3300
2
      if (TagDecl)
3301
2
        Actions.ActOnTagDefinitionError(getCurScope(), TagDecl);
3302
2
      return;
3303
2
    }
3304
642k
  }
3305
3306
642k
  if (Tok.is(tok::colon)) {
3307
187k
    ParseScope InheritanceScope(this, getCurScope()->getFlags() |
3308
187k
                                          Scope::ClassInheritanceScope);
3309
3310
187k
    ParseBaseClause(TagDecl);
3311
187k
    if (!Tok.is(tok::l_brace)) {
3312
44
      bool SuggestFixIt = false;
3313
44
      SourceLocation BraceLoc = PP.getLocForEndOfToken(PrevTokLocation);
3314
44
      if (Tok.isAtStartOfLine()) {
3315
36
        switch (Tok.getKind()) {
3316
0
        case tok::kw_private:
3317
5
        case tok::kw_protected:
3318
5
        case tok::kw_public:
3319
5
          SuggestFixIt = NextToken().getKind() == tok::colon;
3320
5
          break;
3321
3
        case tok::kw_static_assert:
3322
3
        case tok::r_brace:
3323
8
        case tok::kw_using:
3324
        // base-clause can have simple-template-id; 'template' can't be there
3325
13
        case tok::kw_template:
3326
13
          SuggestFixIt = true;
3327
13
          break;
3328
9
        case tok::identifier:
3329
9
          SuggestFixIt = isConstructorDeclarator(true);
3330
9
          break;
3331
9
        default:
3332
9
          SuggestFixIt = isCXXSimpleDeclaration(/*AllowForRangeDecl=*/false);
3333
9
          break;
3334
44
        }
3335
44
      }
3336
44
      DiagnosticBuilder LBraceDiag =
3337
44
          Diag(BraceLoc, diag::err_expected_lbrace_after_base_specifiers);
3338
44
      if (SuggestFixIt) {
3339
31
        LBraceDiag << FixItHint::CreateInsertion(BraceLoc, " {");
3340
        // Try recovering from missing { after base-clause.
3341
31
        PP.EnterToken(Tok, /*IsReinject*/true);
3342
31
        Tok.setKind(tok::l_brace);
3343
13
      } else {
3344
13
        if (TagDecl)
3345
12
          Actions.ActOnTagDefinitionError(getCurScope(), TagDecl);
3346
13
        return;
3347
13
      }
3348
642k
    }
3349
187k
  }
3350
3351
642k
  assert(Tok.is(tok::l_brace));
3352
642k
  BalancedDelimiterTracker T(*this, tok::l_brace);
3353
642k
  T.consumeOpen();
3354
3355
642k
  if (TagDecl)
3356
642k
    Actions.ActOnStartCXXMemberDeclarations(getCurScope(), TagDecl, FinalLoc,
3357
642k
                                            IsFinalSpelledSealed,
3358
642k
                                            T.getOpenLocation());
3359
3360
  // C++ 11p3: Members of a class defined with the keyword class are private
3361
  // by default. Members of a class defined with the keywords struct or union
3362
  // are public by default.
3363
642k
  AccessSpecifier CurAS;
3364
642k
  if (TagType == DeclSpec::TST_class)
3365
93.0k
    CurAS = AS_private;
3366
549k
  else
3367
549k
    CurAS = AS_public;
3368
642k
  ParsedAttributesWithRange AccessAttrs(AttrFactory);
3369
3370
642k
  if (TagDecl) {
3371
    // While we still have something to read, read the member-declarations.
3372
3.33M
    while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
3373
2.68M
           Tok.isNot(tok::eof)) {
3374
      // Each iteration of this loop reads one member-declaration.
3375
2.68M
      ParseCXXClassMemberDeclarationWithPragmas(
3376
2.68M
          CurAS, AccessAttrs, static_cast<DeclSpec::TST>(TagType), TagDecl);
3377
2.68M
      MaybeDestroyTemplateIds();
3378
2.68M
    }
3379
642k
    T.consumeClose();
3380
209
  } else {
3381
209
    SkipUntil(tok::r_brace);
3382
209
  }
3383
3384
  // If attributes exist after class contents, parse them.
3385
642k
  ParsedAttributes attrs(AttrFactory);
3386
642k
  MaybeParseGNUAttributes(attrs);
3387
3388
642k
  if (TagDecl)
3389
642k
    Actions.ActOnFinishCXXMemberSpecification(getCurScope(), RecordLoc, TagDecl,
3390
642k
                                              T.getOpenLocation(),
3391
642k
                                              T.getCloseLocation(), attrs);
3392
3393
  // C++11 [class.mem]p2:
3394
  //   Within the class member-specification, the class is regarded as complete
3395
  //   within function bodies, default arguments, exception-specifications, and
3396
  //   brace-or-equal-initializers for non-static data members (including such
3397
  //   things in nested classes).
3398
642k
  if (TagDecl && 
NonNestedClass642k
) {
3399
    // We are not inside a nested class. This class and its nested classes
3400
    // are complete and we can parse the delayed portions of method
3401
    // declarations and the lexed inline method definitions, along with any
3402
    // delayed attributes.
3403
3404
    // Save the state of Sema.FPFeatures, and change the setting
3405
    // to the levels specified on the command line.  Previous level
3406
    // will be restored when the RAII object is destroyed.
3407
603k
    Sema::FPFeaturesStateRAII SaveFPFeaturesState(Actions);
3408
603k
    FPOptionsOverride NewOverrides;
3409
603k
    Actions.CurFPFeatures = NewOverrides.applyOverrides(getLangOpts());
3410
603k
    Actions.FpPragmaStack.Act(Tok.getLocation(), Sema::PSK_Reset, StringRef(),
3411
603k
                              {} /*unused*/);
3412
3413
603k
    SourceLocation SavedPrevTokLocation = PrevTokLocation;
3414
603k
    ParseLexedPragmas(getCurrentClass());
3415
603k
    ParseLexedAttributes(getCurrentClass());
3416
603k
    ParseLexedMethodDeclarations(getCurrentClass());
3417
3418
    // We've finished with all pending member declarations.
3419
603k
    Actions.ActOnFinishCXXMemberDecls();
3420
3421
603k
    ParseLexedMemberInitializers(getCurrentClass());
3422
603k
    ParseLexedMethodDefs(getCurrentClass());
3423
603k
    PrevTokLocation = SavedPrevTokLocation;
3424
3425
    // We've finished parsing everything, including default argument
3426
    // initializers.
3427
603k
    Actions.ActOnFinishCXXNonNestedClass();
3428
603k
  }
3429
3430
642k
  if (TagDecl)
3431
642k
    Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl, T.getRange());
3432
3433
  // Leave the class scope.
3434
642k
  ParsingDef.Pop();
3435
642k
  ClassScope.Exit();
3436
642k
}
3437
3438
2
void Parser::DiagnoseUnexpectedNamespace(NamedDecl *D) {
3439
2
  assert(Tok.is(tok::kw_namespace));
3440
3441
  // FIXME: Suggest where the close brace should have gone by looking
3442
  // at indentation changes within the definition body.
3443
2
  Diag(D->getLocation(),
3444
2
       diag::err_missing_end_of_definition) << D;
3445
2
  Diag(Tok.getLocation(),
3446
2
       diag::note_missing_end_of_definition_before) << D;
3447
3448
  // Push '};' onto the token stream to recover.
3449
2
  PP.EnterToken(Tok, /*IsReinject*/ true);
3450
3451
2
  Tok.startToken();
3452
2
  Tok.setLocation(PP.getLocForEndOfToken(PrevTokLocation));
3453
2
  Tok.setKind(tok::semi);
3454
2
  PP.EnterToken(Tok, /*IsReinject*/ true);
3455
3456
2
  Tok.setKind(tok::r_brace);
3457
2
}
3458
3459
/// ParseConstructorInitializer - Parse a C++ constructor initializer,
3460
/// which explicitly initializes the members or base classes of a
3461
/// class (C++ [class.base.init]). For example, the three initializers
3462
/// after the ':' in the Derived constructor below:
3463
///
3464
/// @code
3465
/// class Base { };
3466
/// class Derived : Base {
3467
///   int x;
3468
///   float f;
3469
/// public:
3470
///   Derived(float f) : Base(), x(17), f(f) { }
3471
/// };
3472
/// @endcode
3473
///
3474
/// [C++]  ctor-initializer:
3475
///          ':' mem-initializer-list
3476
///
3477
/// [C++]  mem-initializer-list:
3478
///          mem-initializer ...[opt]
3479
///          mem-initializer ...[opt] , mem-initializer-list
3480
144k
void Parser::ParseConstructorInitializer(Decl *ConstructorDecl) {
3481
144k
  assert(Tok.is(tok::colon) &&
3482
144k
         "Constructor initializer always starts with ':'");
3483
3484
  // Poison the SEH identifiers so they are flagged as illegal in constructor
3485
  // initializers.
3486
144k
  PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true);
3487
144k
  SourceLocation ColonLoc = ConsumeToken();
3488
3489
144k
  SmallVector<CXXCtorInitializer*, 4> MemInitializers;
3490
144k
  bool AnyErrors = false;
3491
3492
200k
  do {
3493
200k
    if (Tok.is(tok::code_completion)) {
3494
28
      Actions.CodeCompleteConstructorInitializer(ConstructorDecl,
3495
28
                                                 MemInitializers);
3496
28
      return cutOffParsing();
3497
28
    }
3498
3499
200k
    MemInitResult MemInit = ParseMemInitializer(ConstructorDecl);
3500
200k
    if (!MemInit.isInvalid())
3501
200k
      MemInitializers.push_back(MemInit.get());
3502
131
    else
3503
131
      AnyErrors = true;
3504
3505
200k
    if (Tok.is(tok::comma))
3506
55.6k
      ConsumeToken();
3507
144k
    else if (Tok.is(tok::l_brace))
3508
144k
      break;
3509
    // If the previous initializer was valid and the next token looks like a
3510
    // base or member initializer, assume that we're just missing a comma.
3511
23
    else if (!MemInit.isInvalid() &&
3512
9
             Tok.isOneOf(tok::identifier, tok::coloncolon)) {
3513
8
      SourceLocation Loc = PP.getLocForEndOfToken(PrevTokLocation);
3514
8
      Diag(Loc, diag::err_ctor_init_missing_comma)
3515
8
        << FixItHint::CreateInsertion(Loc, ", ");
3516
15
    } else {
3517
      // Skip over garbage, until we get to '{'.  Don't eat the '{'.
3518
15
      if (!MemInit.isInvalid())
3519
1
        Diag(Tok.getLocation(), diag::err_expected_either) << tok::l_brace
3520
1
                                                           << tok::comma;
3521
15
      SkipUntil(tok::l_brace, StopAtSemi | StopBeforeMatch);
3522
15
      break;
3523
15
    }
3524
55.6k
  } while (true);
3525
3526
144k
  Actions.ActOnMemInitializers(ConstructorDecl, ColonLoc, MemInitializers,
3527
144k
                               AnyErrors);
3528
144k
}
3529
3530
/// ParseMemInitializer - Parse a C++ member initializer, which is
3531
/// part of a constructor initializer that explicitly initializes one
3532
/// member or base class (C++ [class.base.init]). See
3533
/// ParseConstructorInitializer for an example.
3534
///
3535
/// [C++] mem-initializer:
3536
///         mem-initializer-id '(' expression-list[opt] ')'
3537
/// [C++0x] mem-initializer-id braced-init-list
3538
///
3539
/// [C++] mem-initializer-id:
3540
///         '::'[opt] nested-name-specifier[opt] class-name
3541
///         identifier
3542
200k
MemInitResult Parser::ParseMemInitializer(Decl *ConstructorDecl) {
3543
  // parse '::'[opt] nested-name-specifier[opt]
3544
200k
  CXXScopeSpec SS;
3545
200k
  if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
3546
200k
                                     /*ObjectHadErrors=*/false,
3547
200k
                                     /*EnteringContext=*/false))
3548
2
    return true;
3549
3550
  // : identifier
3551
200k
  IdentifierInfo *II = nullptr;
3552
200k
  SourceLocation IdLoc = Tok.getLocation();
3553
  // : declype(...)
3554
200k
  DeclSpec DS(AttrFactory);
3555
  // : template_name<...>
3556
200k
  TypeResult TemplateTypeTy;
3557
3558
200k
  if (Tok.is(tok::identifier)) {
3559
    // Get the identifier. This may be a member name or a class name,
3560
    // but we'll let the semantic analysis determine which it is.
3561
195k
    II = Tok.getIdentifierInfo();
3562
195k
    ConsumeToken();
3563
4.83k
  } else if (Tok.is(tok::annot_decltype)) {
3564
    // Get the decltype expression, if there is one.
3565
    // Uses of decltype will already have been converted to annot_decltype by
3566
    // ParseOptionalCXXScopeSpecifier at this point.
3567
    // FIXME: Can we get here with a scope specifier?
3568
6
    ParseDecltypeSpecifier(DS);
3569
4.82k
  } else {
3570
4.82k
    TemplateIdAnnotation *TemplateId = Tok.is(tok::annot_template_id)
3571
4.80k
                                           ? takeTemplateIdAnnotation(Tok)
3572
26
                                           : nullptr;
3573
4.82k
    if (TemplateId && 
TemplateId->mightBeType()4.80k
) {
3574
4.80k
      AnnotateTemplateIdTokenAsType(SS, /*IsClassName*/true);
3575
4.80k
      assert(Tok.is(tok::annot_typename) && "template-id -> type failed");
3576
4.80k
      TemplateTypeTy = getTypeAnnotation(Tok);
3577
4.80k
      ConsumeAnnotationToken();
3578
27
    } else {
3579
27
      Diag(Tok, diag::err_expected_member_or_base_name);
3580
27
      return true;
3581
27
    }
3582
200k
  }
3583
3584
  // Parse the '('.
3585
200k
  if (getLangOpts().CPlusPlus11 && 
Tok.is(tok::l_brace)198k
) {
3586
355
    Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
3587
3588
    // FIXME: Add support for signature help inside initializer lists.
3589
355
    ExprResult InitList = ParseBraceInitializer();
3590
355
    if (InitList.isInvalid())
3591
0
      return true;
3592
3593
355
    SourceLocation EllipsisLoc;
3594
355
    TryConsumeToken(tok::ellipsis, EllipsisLoc);
3595
3596
355
    if (TemplateTypeTy.isInvalid())
3597
0
      return true;
3598
355
    return Actions.ActOnMemInitializer(ConstructorDecl, getCurScope(), SS, II,
3599
355
                                       TemplateTypeTy.get(), DS, IdLoc,
3600
355
                                       InitList.get(), EllipsisLoc);
3601
199k
  } else if(Tok.is(tok::l_paren)) {
3602
199k
    BalancedDelimiterTracker T(*this, tok::l_paren);
3603
199k
    T.consumeOpen();
3604
3605
    // Parse the optional expression-list.
3606
199k
    ExprVector ArgExprs;
3607
199k
    CommaLocsTy CommaLocs;
3608
2
    auto RunSignatureHelp = [&] {
3609
2
      if (TemplateTypeTy.isInvalid())
3610
0
        return QualType();
3611
2
      QualType PreferredType = Actions.ProduceCtorInitMemberSignatureHelp(
3612
2
          getCurScope(), ConstructorDecl, SS, TemplateTypeTy.get(), ArgExprs, II,
3613
2
          T.getOpenLocation());
3614
2
      CalledSignatureHelp = true;
3615
2
      return PreferredType;
3616
2
    };
3617
199k
    if (Tok.isNot(tok::r_paren) &&
3618
248k
        
ParseExpressionList(ArgExprs, CommaLocs, [&] 190k
{
3619
248k
          PreferredType.enterFunctionArgument(Tok.getLocation(),
3620
248k
                                              RunSignatureHelp);
3621
13
        })) {
3622
13
      if (PP.isCodeCompletionReached() && 
!CalledSignatureHelp6
)
3623
0
        RunSignatureHelp();
3624
13
      SkipUntil(tok::r_paren, StopAtSemi);
3625
13
      return true;
3626
13
    }
3627
3628
199k
    T.consumeClose();
3629
3630
199k
    SourceLocation EllipsisLoc;
3631
199k
    TryConsumeToken(tok::ellipsis, EllipsisLoc);
3632
3633
199k
    if (TemplateTypeTy.isInvalid())
3634
1
      return true;
3635
199k
    return Actions.ActOnMemInitializer(ConstructorDecl, getCurScope(), SS, II,
3636
199k
                                       TemplateTypeTy.get(), DS, IdLoc,
3637
199k
                                       T.getOpenLocation(), ArgExprs,
3638
199k
                                       T.getCloseLocation(), EllipsisLoc);
3639
199k
  }
3640
3641
0
  if (TemplateTypeTy.isInvalid())
3642
0
    return true;
3643
3644
0
  if (getLangOpts().CPlusPlus11)
3645
0
    return Diag(Tok, diag::err_expected_either) << tok::l_paren << tok::l_brace;
3646
0
  else
3647
0
    return Diag(Tok, diag::err_expected) << tok::l_paren;
3648
0
}
3649
3650
/// Parse a C++ exception-specification if present (C++0x [except.spec]).
3651
///
3652
///       exception-specification:
3653
///         dynamic-exception-specification
3654
///         noexcept-specification
3655
///
3656
///       noexcept-specification:
3657
///         'noexcept'
3658
///         'noexcept' '(' constant-expression ')'
3659
ExceptionSpecificationType
3660
Parser::tryParseExceptionSpecification(bool Delayed,
3661
                    SourceRange &SpecificationRange,
3662
                    SmallVectorImpl<ParsedType> &DynamicExceptions,
3663
                    SmallVectorImpl<SourceRange> &DynamicExceptionRanges,
3664
                    ExprResult &NoexceptExpr,
3665
2.88M
                    CachedTokens *&ExceptionSpecTokens) {
3666
2.88M
  ExceptionSpecificationType Result = EST_None;
3667
2.88M
  ExceptionSpecTokens = nullptr;
3668
3669
  // Handle delayed parsing of exception-specifications.
3670
2.88M
  if (Delayed) {
3671
963k
    if (Tok.isNot(tok::kw_throw) && 
Tok.isNot(tok::kw_noexcept)961k
)
3672
587k
      return EST_None;
3673
3674
    // Consume and cache the starting token.
3675
375k
    bool IsNoexcept = Tok.is(tok::kw_noexcept);
3676
375k
    Token StartTok = Tok;
3677
375k
    SpecificationRange = SourceRange(ConsumeToken());
3678
3679
    // Check for a '('.
3680
375k
    if (!Tok.is(tok::l_paren)) {
3681
      // If this is a bare 'noexcept', we're done.
3682
345k
      if (IsNoexcept) {
3683
345k
        Diag(Tok, diag::warn_cxx98_compat_noexcept_decl);
3684
345k
        NoexceptExpr = nullptr;
3685
345k
        return EST_BasicNoexcept;
3686
345k
      }
3687
3688
0
      Diag(Tok, diag::err_expected_lparen_after) << "throw";
3689
0
      return EST_DynamicNone;
3690
0
    }
3691
3692
    // Cache the tokens for the exception-specification.
3693
29.5k
    ExceptionSpecTokens = new CachedTokens;
3694
29.5k
    ExceptionSpecTokens->push_back(StartTok); // 'throw' or 'noexcept'
3695
29.5k
    ExceptionSpecTokens->push_back(Tok); // '('
3696
29.5k
    SpecificationRange.setEnd(ConsumeParen()); // '('
3697
3698
29.5k
    ConsumeAndStoreUntil(tok::r_paren, *ExceptionSpecTokens,
3699
29.5k
                         /*StopAtSemi=*/true,
3700
29.5k
                         /*ConsumeFinalToken=*/true);
3701
29.5k
    SpecificationRange.setEnd(ExceptionSpecTokens->back().getLocation());
3702
3703
29.5k
    return EST_Unparsed;
3704
29.5k
  }
3705
3706
  // See if there's a dynamic specification.
3707
1.92M
  if (Tok.is(tok::kw_throw)) {
3708
4.20k
    Result = ParseDynamicExceptionSpecification(SpecificationRange,
3709
4.20k
                                                DynamicExceptions,
3710
4.20k
                                                DynamicExceptionRanges);
3711
4.20k
    assert(DynamicExceptions.size() == DynamicExceptionRanges.size() &&
3712
4.20k
           "Produced different number of exception types and ranges.");
3713
4.20k
  }
3714
3715
  // If there's no noexcept specification, we're done.
3716
1.92M
  if (Tok.isNot(tok::kw_noexcept))
3717
1.68M
    return Result;
3718
3719
242k
  Diag(Tok, diag::warn_cxx98_compat_noexcept_decl);
3720
3721
  // If we already had a dynamic specification, parse the noexcept for,
3722
  // recovery, but emit a diagnostic and don't store the results.
3723
242k
  SourceRange NoexceptRange;
3724
242k
  ExceptionSpecificationType NoexceptType = EST_None;
3725
3726
242k
  SourceLocation KeywordLoc = ConsumeToken();
3727
242k
  if (Tok.is(tok::l_paren)) {
3728
    // There is an argument.
3729
45.8k
    BalancedDelimiterTracker T(*this, tok::l_paren);
3730
45.8k
    T.consumeOpen();
3731
45.8k
    NoexceptExpr = ParseConstantExpression();
3732
45.8k
    T.consumeClose();
3733
45.8k
    if (!NoexceptExpr.isInvalid()) {
3734
45.8k
      NoexceptExpr = Actions.ActOnNoexceptSpec(KeywordLoc, NoexceptExpr.get(),
3735
45.8k
                                               NoexceptType);
3736
45.8k
      NoexceptRange = SourceRange(KeywordLoc, T.getCloseLocation());
3737
2
    } else {
3738
2
      NoexceptType = EST_BasicNoexcept;
3739
2
    }
3740
196k
  } else {
3741
    // There is no argument.
3742
196k
    NoexceptType = EST_BasicNoexcept;
3743
196k
    NoexceptRange = SourceRange(KeywordLoc, KeywordLoc);
3744
196k
  }
3745
3746
242k
  if (Result == EST_None) {
3747
242k
    SpecificationRange = NoexceptRange;
3748
242k
    Result = NoexceptType;
3749
3750
    // If there's a dynamic specification after a noexcept specification,
3751
    // parse that and ignore the results.
3752
242k
    if (Tok.is(tok::kw_throw)) {
3753
1
      Diag(Tok.getLocation(), diag::err_dynamic_and_noexcept_specification);
3754
1
      ParseDynamicExceptionSpecification(NoexceptRange, DynamicExceptions,
3755
1
                                         DynamicExceptionRanges);
3756
1
    }
3757
0
  } else {
3758
0
    Diag(Tok.getLocation(), diag::err_dynamic_and_noexcept_specification);
3759
0
  }
3760
3761
242k
  return Result;
3762
242k
}
3763
3764
static void diagnoseDynamicExceptionSpecification(
3765
4.20k
    Parser &P, SourceRange Range, bool IsNoexcept) {
3766
4.20k
  if (P.getLangOpts().CPlusPlus11) {
3767
3.43k
    const char *Replacement = IsNoexcept ? "noexcept" : 
"noexcept(false)"545
;
3768
3.98k
    P.Diag(Range.getBegin(),
3769
3.98k
           P.getLangOpts().CPlusPlus17 && 
!IsNoexcept380
3770
45
               ? diag::ext_dynamic_exception_spec
3771
3.93k
               : diag::warn_exception_spec_deprecated)
3772
3.98k
        << Range;
3773
3.98k
    P.Diag(Range.getBegin(), diag::note_exception_spec_deprecated)
3774
3.98k
      << Replacement << FixItHint::CreateReplacement(Range, Replacement);
3775
3.98k
  }
3776
4.20k
}
3777
3778
/// ParseDynamicExceptionSpecification - Parse a C++
3779
/// dynamic-exception-specification (C++ [except.spec]).
3780
///
3781
///       dynamic-exception-specification:
3782
///         'throw' '(' type-id-list [opt] ')'
3783
/// [MS]    'throw' '(' '...' ')'
3784
///
3785
///       type-id-list:
3786
///         type-id ... [opt]
3787
///         type-id-list ',' type-id ... [opt]
3788
///
3789
ExceptionSpecificationType Parser::ParseDynamicExceptionSpecification(
3790
                                  SourceRange &SpecificationRange,
3791
                                  SmallVectorImpl<ParsedType> &Exceptions,
3792
4.20k
                                  SmallVectorImpl<SourceRange> &Ranges) {
3793
4.20k
  assert(Tok.is(tok::kw_throw) && "expected throw");
3794
3795
4.20k
  SpecificationRange.setBegin(ConsumeToken());
3796
4.20k
  BalancedDelimiterTracker T(*this, tok::l_paren);
3797
4.20k
  if (T.consumeOpen()) {
3798
0
    Diag(Tok, diag::err_expected_lparen_after) << "throw";
3799
0
    SpecificationRange.setEnd(SpecificationRange.getBegin());
3800
0
    return EST_DynamicNone;
3801
0
  }
3802
3803
  // Parse throw(...), a Microsoft extension that means "this function
3804
  // can throw anything".
3805
4.20k
  if (Tok.is(tok::ellipsis)) {
3806
66
    SourceLocation EllipsisLoc = ConsumeToken();
3807
66
    if (!getLangOpts().MicrosoftExt)
3808
44
      Diag(EllipsisLoc, diag::ext_ellipsis_exception_spec);
3809
66
    T.consumeClose();
3810
66
    SpecificationRange.setEnd(T.getCloseLocation());
3811
66
    diagnoseDynamicExceptionSpecification(*this, SpecificationRange, false);
3812
66
    return EST_MSAny;
3813
66
  }
3814
3815
  // Parse the sequence of type-ids.
3816
4.13k
  SourceRange Range;
3817
4.21k
  while (Tok.isNot(tok::r_paren)) {
3818
680
    TypeResult Res(ParseTypeName(&Range));
3819
3820
680
    if (Tok.is(tok::ellipsis)) {
3821
      // C++0x [temp.variadic]p5:
3822
      //   - In a dynamic-exception-specification (15.4); the pattern is a
3823
      //     type-id.
3824
13
      SourceLocation Ellipsis = ConsumeToken();
3825
13
      Range.setEnd(Ellipsis);
3826
13
      if (!Res.isInvalid())
3827
13
        Res = Actions.ActOnPackExpansion(Res.get(), Ellipsis);
3828
13
    }
3829
3830
680
    if (!Res.isInvalid()) {
3831
672
      Exceptions.push_back(Res.get());
3832
672
      Ranges.push_back(Range);
3833
672
    }
3834
3835
680
    if (!TryConsumeToken(tok::comma))
3836
596
      break;
3837
680
  }
3838
3839
4.13k
  T.consumeClose();
3840
4.13k
  SpecificationRange.setEnd(T.getCloseLocation());
3841
4.13k
  diagnoseDynamicExceptionSpecification(*this, SpecificationRange,
3842
4.13k
                                        Exceptions.empty());
3843
3.54k
  return Exceptions.empty() ? EST_DynamicNone : 
EST_Dynamic588
;
3844
4.13k
}
3845
3846
/// ParseTrailingReturnType - Parse a trailing return type on a new-style
3847
/// function declaration.
3848
TypeResult Parser::ParseTrailingReturnType(SourceRange &Range,
3849
16.1k
                                           bool MayBeFollowedByDirectInit) {
3850
16.1k
  assert(Tok.is(tok::arrow) && "expected arrow");
3851
3852
16.1k
  ConsumeToken();
3853
3854
16.1k
  return ParseTypeName(&Range, MayBeFollowedByDirectInit
3855
9.33k
                                   ? DeclaratorContext::TrailingReturnVar
3856
6.81k
                                   : DeclaratorContext::TrailingReturn);
3857
16.1k
}
3858
3859
/// Parse a requires-clause as part of a function declaration.
3860
127
void Parser::ParseTrailingRequiresClause(Declarator &D) {
3861
127
  assert(Tok.is(tok::kw_requires) && "expected requires");
3862
3863
127
  SourceLocation RequiresKWLoc = ConsumeToken();
3864
3865
127
  ExprResult TrailingRequiresClause;
3866
127
  ParseScope ParamScope(this,
3867
127
                        Scope::DeclScope |
3868
127
                        Scope::FunctionDeclarationScope |
3869
127
                        Scope::FunctionPrototypeScope);
3870
3871
127
  Actions.ActOnStartTrailingRequiresClause(getCurScope(), D);
3872
3873
127
  llvm::Optional<Sema::CXXThisScopeRAII> ThisScope;
3874
127
  InitCXXThisScopeForDeclaratorIfRelevant(D, D.getDeclSpec(), ThisScope);
3875
3876
127
  TrailingRequiresClause =
3877
127
      ParseConstraintLogicalOrExpression(/*IsTrailingRequiresClause=*/true);
3878
3879
127
  TrailingRequiresClause =
3880
127
      Actions.ActOnFinishTrailingRequiresClause(TrailingRequiresClause);
3881
3882
127
  if (!D.isDeclarationOfFunction()) {
3883
1
    Diag(RequiresKWLoc,
3884
1
         diag::err_requires_clause_on_declarator_not_declaring_a_function);
3885
1
    return;
3886
1
  }
3887
3888
126
  if (TrailingRequiresClause.isInvalid())
3889
7
    SkipUntil({tok::l_brace, tok::arrow, tok::kw_try, tok::comma, tok::colon},
3890
7
              StopAtSemi | StopBeforeMatch);
3891
119
  else
3892
119
    D.setTrailingRequiresClause(TrailingRequiresClause.get());
3893
3894
  // Did the user swap the trailing return type and requires clause?
3895
126
  if (D.isFunctionDeclarator() && 
Tok.is(tok::arrow)123
&&
3896
1
      D.getDeclSpec().getTypeSpecType() == TST_auto) {
3897
1
    SourceLocation ArrowLoc = Tok.getLocation();
3898
1
    SourceRange Range;
3899
1
    TypeResult TrailingReturnType =
3900
1
        ParseTrailingReturnType(Range, /*MayBeFollowedByDirectInit=*/false);
3901
3902
1
    if (!TrailingReturnType.isInvalid()) {
3903
1
      Diag(ArrowLoc,
3904
1
           diag::err_requires_clause_must_appear_after_trailing_return)
3905
1
          << Range;
3906
1
      auto &FunctionChunk = D.getFunctionTypeInfo();
3907
1
      FunctionChunk.HasTrailingReturnType = TrailingReturnType.isUsable();
3908
1
      FunctionChunk.TrailingReturnType = TrailingReturnType.get();
3909
1
      FunctionChunk.TrailingReturnTypeLoc = Range.getBegin();
3910
1
    } else
3911
0
      SkipUntil({tok::equal, tok::l_brace, tok::arrow, tok::kw_try, tok::comma},
3912
0
                StopAtSemi | StopBeforeMatch);
3913
1
  }
3914
126
}
3915
3916
/// We have just started parsing the definition of a new class,
3917
/// so push that class onto our stack of classes that is currently
3918
/// being parsed.
3919
Sema::ParsingClassState
3920
Parser::PushParsingClass(Decl *ClassDecl, bool NonNestedClass,
3921
642k
                         bool IsInterface) {
3922
642k
  assert((NonNestedClass || !ClassStack.empty()) &&
3923
642k
         "Nested class without outer class");
3924
642k
  ClassStack.push(new ParsingClass(ClassDecl, NonNestedClass, IsInterface));
3925
642k
  return Actions.PushParsingClass();
3926
642k
}
3927
3928
/// Deallocate the given parsed class and all of its nested
3929
/// classes.
3930
642k
void Parser::DeallocateParsedClasses(Parser::ParsingClass *Class) {
3931
1.35M
  for (unsigned I = 0, N = Class->LateParsedDeclarations.size(); I != N; 
++I712k
)
3932
712k
    delete Class->LateParsedDeclarations[I];
3933
642k
  delete Class;
3934
642k
}
3935
3936
/// Pop the top class of the stack of classes that are
3937
/// currently being parsed.
3938
///
3939
/// This routine should be called when we have finished parsing the
3940
/// definition of a class, but have not yet popped the Scope
3941
/// associated with the class's definition.
3942
642k
void Parser::PopParsingClass(Sema::ParsingClassState state) {
3943
642k
  assert(!ClassStack.empty() && "Mismatched push/pop for class parsing");
3944
3945
642k
  Actions.PopParsingClass(state);
3946
3947
642k
  ParsingClass *Victim = ClassStack.top();
3948
642k
  ClassStack.pop();
3949
642k
  if (Victim->TopLevelClass) {
3950
    // Deallocate all of the nested classes of this class,
3951
    // recursively: we don't need to keep any of this information.
3952
603k
    DeallocateParsedClasses(Victim);
3953
603k
    return;
3954
603k
  }
3955
39.4k
  assert(!ClassStack.empty() && "Missing top-level class?");
3956
3957
39.4k
  if (Victim->LateParsedDeclarations.empty()) {
3958
    // The victim is a nested class, but we will not need to perform
3959
    // any processing after the definition of this class since it has
3960
    // no members whose handling was delayed. Therefore, we can just
3961
    // remove this nested class.
3962
32.3k
    DeallocateParsedClasses(Victim);
3963
32.3k
    return;
3964
32.3k
  }
3965
3966
  // This nested class has some members that will need to be processed
3967
  // after the top-level class is completely defined. Therefore, add
3968
  // it to the list of nested classes within its parent.
3969
7.07k
  assert(getCurScope()->isClassScope() && "Nested class outside of class scope?");
3970
7.07k
  ClassStack.top()->LateParsedDeclarations.push_back(
3971
7.07k
      new LateParsedClass(this, Victim));
3972
7.07k
}
3973
3974
/// Try to parse an 'identifier' which appears within an attribute-token.
3975
///
3976
/// \return the parsed identifier on success, and 0 if the next token is not an
3977
/// attribute-token.
3978
///
3979
/// C++11 [dcl.attr.grammar]p3:
3980
///   If a keyword or an alternative token that satisfies the syntactic
3981
///   requirements of an identifier is contained in an attribute-token,
3982
///   it is considered an identifier.
3983
14.6k
IdentifierInfo *Parser::TryParseCXX11AttributeIdentifier(SourceLocation &Loc) {
3984
14.6k
  switch (Tok.getKind()) {
3985
14.6k
  default:
3986
    // Identifiers and keywords have identifier info attached.
3987
14.6k
    if (!Tok.isAnnotation()) {
3988
14.6k
      if (IdentifierInfo *II = Tok.getIdentifierInfo()) {
3989
14.6k
        Loc = ConsumeToken();
3990
14.6k
        return II;
3991
14.6k
      }
3992
16
    }
3993
16
    return nullptr;
3994
3995
7
  case tok::numeric_constant: {
3996
    // If we got a numeric constant, check to see if it comes from a macro that
3997
    // corresponds to the predefined __clang__ macro. If it does, warn the user
3998
    // and recover by pretending they said _Clang instead.
3999
7
    if (Tok.getLocation().isMacroID()) {
4000
5
      SmallString<8> ExpansionBuf;
4001
5
      SourceLocation ExpansionLoc =
4002
5
          PP.getSourceManager().getExpansionLoc(Tok.getLocation());
4003
5
      StringRef Spelling = PP.getSpelling(ExpansionLoc, ExpansionBuf);
4004
5
      if (Spelling == "__clang__") {
4005
5
        SourceRange TokRange(
4006
5
            ExpansionLoc,
4007
5
            PP.getSourceManager().getExpansionLoc(Tok.getEndLoc()));
4008
5
        Diag(Tok, diag::warn_wrong_clang_attr_namespace)
4009
5
            << FixItHint::CreateReplacement(TokRange, "_Clang");
4010
5
        Loc = ConsumeToken();
4011
5
        return &PP.getIdentifierTable().get("_Clang");
4012
5
      }
4013
2
    }
4014
2
    return nullptr;
4015
2
  }
4016
4017
0
  case tok::ampamp:       // 'and'
4018
2
  case tok::pipe:         // 'bitor'
4019
2
  case tok::pipepipe:     // 'or'
4020
3
  case tok::caret:        // 'xor'
4021
5
  case tok::tilde:        // 'compl'
4022
8
  case tok::amp:          // 'bitand'
4023
8
  case tok::ampequal:     // 'and_eq'
4024
8
  case tok::pipeequal:    // 'or_eq'
4025
8
  case tok::caretequal:   // 'xor_eq'
4026
8
  case tok::exclaim:      // 'not'
4027
8
  case tok::exclaimequal: // 'not_eq'
4028
    // Alternative tokens do not have identifier info, but their spelling
4029
    // starts with an alphabetical character.
4030
8
    SmallString<8> SpellingBuf;
4031
8
    SourceLocation SpellingLoc =
4032
8
        PP.getSourceManager().getSpellingLoc(Tok.getLocation());
4033
8
    StringRef Spelling = PP.getSpelling(SpellingLoc, SpellingBuf);
4034
8
    if (isLetter(Spelling[0])) {
4035
7
      Loc = ConsumeToken();
4036
7
      return &PP.getIdentifierTable().get(Spelling);
4037
7
    }
4038
1
    return nullptr;
4039
14.6k
  }
4040
14.6k
}
4041
4042
static bool IsBuiltInOrStandardCXX11Attribute(IdentifierInfo *AttrName,
4043
12.9k
                                              IdentifierInfo *ScopeName) {
4044
12.9k
  switch (
4045
12.9k
      ParsedAttr::getParsedKind(AttrName, ScopeName, ParsedAttr::AS_CXX11)) {
4046
52
  case ParsedAttr::AT_CarriesDependency:
4047
136
  case ParsedAttr::AT_Deprecated:
4048
1.13k
  case ParsedAttr::AT_FallThrough:
4049
11.4k
  case ParsedAttr::AT_CXX11NoReturn:
4050
11.5k
  case ParsedAttr::AT_NoUniqueAddress:
4051
11.6k
  case ParsedAttr::AT_Likely:
4052
11.7k
  case ParsedAttr::AT_Unlikely:
4053
11.7k
    return true;
4054
131
  case ParsedAttr::AT_WarnUnusedResult:
4055
131
    return !ScopeName && 
AttrName->getName().equals("nodiscard")117
;
4056
53
  case ParsedAttr::AT_Unused:
4057
53
    return !ScopeName && 
AttrName->getName().equals("maybe_unused")44
;
4058
1.07k
  default:
4059
1.07k
    return false;
4060
12.9k
  }
4061
12.9k
}
4062
4063
/// ParseCXX11AttributeArgs -- Parse a C++11 attribute-argument-clause.
4064
///
4065
/// [C++11] attribute-argument-clause:
4066
///         '(' balanced-token-seq ')'
4067
///
4068
/// [C++11] balanced-token-seq:
4069
///         balanced-token
4070
///         balanced-token-seq balanced-token
4071
///
4072
/// [C++11] balanced-token:
4073
///         '(' balanced-token-seq ')'
4074
///         '[' balanced-token-seq ']'
4075
///         '{' balanced-token-seq '}'
4076
///         any token but '(', ')', '[', ']', '{', or '}'
4077
bool Parser::ParseCXX11AttributeArgs(IdentifierInfo *AttrName,
4078
                                     SourceLocation AttrNameLoc,
4079
                                     ParsedAttributes &Attrs,
4080
                                     SourceLocation *EndLoc,
4081
                                     IdentifierInfo *ScopeName,
4082
307
                                     SourceLocation ScopeLoc) {
4083
307
  assert(Tok.is(tok::l_paren) && "Not a C++11 attribute argument list");
4084
307
  SourceLocation LParenLoc = Tok.getLocation();
4085
307
  const LangOptions &LO = getLangOpts();
4086
307
  ParsedAttr::Syntax Syntax =
4087
255
      LO.CPlusPlus ? ParsedAttr::AS_CXX11 : 
ParsedAttr::AS_C2x52
;
4088
4089
  // If the attribute isn't known, we will not attempt to parse any
4090
  // arguments.
4091
307
  if (!hasAttribute(LO.CPlusPlus ? 
AttrSyntax::CXX255
:
AttrSyntax::C52
, ScopeName,
4092
15
                    AttrName, getTargetInfo(), getLangOpts())) {
4093
    // Eat the left paren, then skip to the ending right paren.
4094
15
    ConsumeParen();
4095
15
    SkipUntil(tok::r_paren);
4096
15
    return false;
4097
15
  }
4098
4099
292
  if (ScopeName && 
(239
ScopeName->isStr("gnu")239
||
ScopeName->isStr("__gnu__")202
)) {
4100
    // GNU-scoped attributes have some special cases to handle GNU-specific
4101
    // behaviors.
4102
37
    ParseGNUAttributeArgs(AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
4103
37
                          ScopeLoc, Syntax, nullptr);
4104
37
    return true;
4105
37
  }
4106
4107
255
  unsigned NumArgs;
4108
  // Some Clang-scoped attributes have some special parsing behavior.
4109
255
  if (ScopeName && 
(202
ScopeName->isStr("clang")202
||
ScopeName->isStr("_Clang")58
))
4110
150
    NumArgs = ParseClangAttributeArgs(AttrName, AttrNameLoc, Attrs, EndLoc,
4111
150
                                      ScopeName, ScopeLoc, Syntax);
4112
105
  else
4113
105
    NumArgs =
4114
105
        ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, EndLoc,
4115
105
                                 ScopeName, ScopeLoc, Syntax);
4116
4117
255
  if (!Attrs.empty() &&
4118
241
      IsBuiltInOrStandardCXX11Attribute(AttrName, ScopeName)) {
4119
52
    ParsedAttr &Attr = Attrs.back();
4120
    // If the attribute is a standard or built-in attribute and we are
4121
    // parsing an argument list, we need to determine whether this attribute
4122
    // was allowed to have an argument list (such as [[deprecated]]), and how
4123
    // many arguments were parsed (so we can diagnose on [[deprecated()]]).
4124
52
    if (Attr.getMaxArgs() && 
!NumArgs43
) {
4125
      // The attribute was allowed to have arguments, but none were provided
4126
      // even though the attribute parsed successfully. This is an error.
4127
1
      Diag(LParenLoc, diag::err_attribute_requires_arguments) << AttrName;
4128
1
      Attr.setInvalid(true);
4129
51
    } else if (!Attr.getMaxArgs()) {
4130
      // The attribute parsed successfully, but was not allowed to have any
4131
      // arguments. It doesn't matter whether any were provided -- the
4132
      // presence of the argument list (even if empty) is diagnosed.
4133
9
      Diag(LParenLoc, diag::err_cxx11_attribute_forbids_arguments)
4134
9
          << AttrName
4135
9
          << FixItHint::CreateRemoval(SourceRange(LParenLoc, *EndLoc));
4136
9
      Attr.setInvalid(true);
4137
9
    }
4138
52
  }
4139
255
  return true;
4140
255
}
4141
4142
/// ParseCXX11AttributeSpecifier - Parse a C++11 or C2x attribute-specifier.
4143
///
4144
/// [C++11] attribute-specifier:
4145
///         '[' '[' attribute-list ']' ']'
4146
///         alignment-specifier
4147
///
4148
/// [C++11] attribute-list:
4149
///         attribute[opt]
4150
///         attribute-list ',' attribute[opt]
4151
///         attribute '...'
4152
///         attribute-list ',' attribute '...'
4153
///
4154
/// [C++11] attribute:
4155
///         attribute-token attribute-argument-clause[opt]
4156
///
4157
/// [C++11] attribute-token:
4158
///         identifier
4159
///         attribute-scoped-token
4160
///
4161
/// [C++11] attribute-scoped-token:
4162
///         attribute-namespace '::' identifier
4163
///
4164
/// [C++11] attribute-namespace:
4165
///         identifier
4166
void Parser::ParseCXX11AttributeSpecifier(ParsedAttributes &attrs,
4167
21.2k
                                          SourceLocation *endLoc) {
4168
21.2k
  if (Tok.is(tok::kw_alignas)) {
4169
8.04k
    Diag(Tok.getLocation(), diag::warn_cxx98_compat_alignas);
4170
8.04k
    ParseAlignmentSpecifier(attrs, endLoc);
4171
8.04k
    return;
4172
8.04k
  }
4173
4174
13.1k
  assert(Tok.is(tok::l_square) && NextToken().is(tok::l_square) &&
4175
13.1k
         "Not a double square bracket attribute list");
4176
4177
13.1k
  SourceLocation OpenLoc = Tok.getLocation();
4178
13.1k
  Diag(OpenLoc, diag::warn_cxx98_compat_attribute);
4179
4180
13.1k
  ConsumeBracket();
4181
13.1k
  checkCompoundToken(OpenLoc, tok::l_square, CompoundToken::AttrBegin);
4182
13.1k
  ConsumeBracket();
4183
4184
13.1k
  SourceLocation CommonScopeLoc;
4185
13.1k
  IdentifierInfo *CommonScopeName = nullptr;
4186
13.1k
  if (Tok.is(tok::kw_using)) {
4187
10
    Diag(Tok.getLocation(), getLangOpts().CPlusPlus17
4188
10
                                ? diag::warn_cxx14_compat_using_attribute_ns
4189
0
                                : diag::ext_using_attribute_ns);
4190
10
    ConsumeToken();
4191
4192
10
    CommonScopeName = TryParseCXX11AttributeIdentifier(CommonScopeLoc);
4193
10
    if (!CommonScopeName) {
4194
2
      Diag(Tok.getLocation(), diag::err_expected) << tok::identifier;
4195
2
      SkipUntil(tok::r_square, tok::colon, StopBeforeMatch);
4196
2
    }
4197
10
    if (!TryConsumeToken(tok::colon) && 
CommonScopeName2
)
4198
1
      Diag(Tok.getLocation(), diag::err_expected) << tok::colon;
4199
10
  }
4200
4201
13.1k
  llvm::SmallDenseMap<IdentifierInfo*, SourceLocation, 4> SeenAttrs;
4202
4203
25.9k
  while (Tok.isNot(tok::r_square)) {
4204
    // attribute not present
4205
12.7k
    if (TryConsumeToken(tok::comma))
4206
47
      continue;
4207
4208
12.7k
    SourceLocation ScopeLoc, AttrLoc;
4209
12.7k
    IdentifierInfo *ScopeName = nullptr, *AttrName = nullptr;
4210
4211
12.7k
    AttrName = TryParseCXX11AttributeIdentifier(AttrLoc);
4212
12.7k
    if (!AttrName)
4213
      // Break out to the "expected ']'" diagnostic.
4214
6
      break;
4215
4216
    // scoped attribute
4217
12.7k
    if (TryConsumeToken(tok::coloncolon)) {
4218
1.75k
      ScopeName = AttrName;
4219
1.75k
      ScopeLoc = AttrLoc;
4220
4221
1.75k
      AttrName = TryParseCXX11AttributeIdentifier(AttrLoc);
4222
1.75k
      if (!AttrName) {
4223
1
        Diag(Tok.getLocation(), diag::err_expected) << tok::identifier;
4224
1
        SkipUntil(tok::r_square, tok::comma, StopAtSemi | StopBeforeMatch);
4225
1
        continue;
4226
1
      }
4227
12.7k
    }
4228
4229
12.7k
    if (CommonScopeName) {
4230
8
      if (ScopeName) {
4231
1
        Diag(ScopeLoc, diag::err_using_attribute_ns_conflict)
4232
1
            << SourceRange(CommonScopeLoc);
4233
7
      } else {
4234
7
        ScopeName = CommonScopeName;
4235
7
        ScopeLoc = CommonScopeLoc;
4236
7
      }
4237
8
    }
4238
4239
12.7k
    bool StandardAttr = IsBuiltInOrStandardCXX11Attribute(AttrName, ScopeName);
4240
12.7k
    bool AttrParsed = false;
4241
4242
12.7k
    if (StandardAttr &&
4243
11.8k
        !SeenAttrs.insert(std::make_pair(AttrName, AttrLoc)).second)
4244
10
      Diag(AttrLoc, diag::err_cxx11_attribute_repeated)
4245
10
          << AttrName << SourceRange(SeenAttrs[AttrName]);
4246
4247
    // Parse attribute arguments
4248
12.7k
    if (Tok.is(tok::l_paren))
4249
307
      AttrParsed = ParseCXX11AttributeArgs(AttrName, AttrLoc, attrs, endLoc,
4250
307
                                           ScopeName, ScopeLoc);
4251
4252
12.7k
    if (!AttrParsed)
4253
12.4k
      attrs.addNew(
4254
12.4k
          AttrName,
4255
10.9k
          SourceRange(ScopeLoc.isValid() ? 
ScopeLoc1.52k
: AttrLoc, AttrLoc),
4256
12.4k
          ScopeName, ScopeLoc, nullptr, 0,
4257
12.2k
          getLangOpts().CPlusPlus ? ParsedAttr::AS_CXX11 : 
ParsedAttr::AS_C2x144
);
4258
4259
12.7k
    if (TryConsumeToken(tok::ellipsis))
4260
5
      Diag(Tok, diag::err_cxx11_attribute_forbids_ellipsis)
4261
5
        << AttrName;
4262
12.7k
  }
4263
4264
13.1k
  SourceLocation CloseLoc = Tok.getLocation();
4265
13.1k
  if (ExpectAndConsume(tok::r_square))
4266
6
    SkipUntil(tok::r_square);
4267
13.1k
  else if (Tok.is(tok::r_square))
4268
13.1k
    checkCompoundToken(CloseLoc, tok::r_square, CompoundToken::AttrEnd);
4269
13.1k
  if (endLoc)
4270
13.1k
    *endLoc = Tok.getLocation();
4271
13.1k
  if (ExpectAndConsume(tok::r_square))
4272
5
    SkipUntil(tok::r_square);
4273
13.1k
}
4274
4275
/// ParseCXX11Attributes - Parse a C++11 or C2x attribute-specifier-seq.
4276
///
4277
/// attribute-specifier-seq:
4278
///       attribute-specifier-seq[opt] attribute-specifier
4279
void Parser::ParseCXX11Attributes(ParsedAttributesWithRange &attrs,
4280
21.0k
                                  SourceLocation *endLoc) {
4281
21.0k
  assert(standardAttributesAllowed());
4282
4283
21.0k
  SourceLocation StartLoc = Tok.getLocation(), Loc;
4284
21.0k
  if (!endLoc)
4285
20.8k
    endLoc = &Loc;
4286
4287
21.2k
  do {
4288
21.2k
    ParseCXX11AttributeSpecifier(attrs, endLoc);
4289
21.2k
  } while (isCXX11AttributeSpecifier());
4290
4291
21.0k
  attrs.Range = SourceRange(StartLoc, *endLoc);
4292
21.0k
}
4293
4294
4.96M
void Parser::DiagnoseAndSkipCXX11Attributes() {
4295
  // Start and end location of an attribute or an attribute list.
4296
4.96M
  SourceLocation StartLoc = Tok.getLocation();
4297
4.96M
  SourceLocation EndLoc = SkipCXX11Attributes();
4298
4299
4.96M
  if (EndLoc.isValid()) {
4300
9
    SourceRange Range(StartLoc, EndLoc);
4301
9
    Diag(StartLoc, diag::err_attributes_not_allowed)
4302
9
      << Range;
4303
9
  }
4304
4.96M
}
4305
4306
5.34M
SourceLocation Parser::SkipCXX11Attributes() {
4307
5.34M
  SourceLocation EndLoc;
4308
4309
5.34M
  if (!isCXX11AttributeSpecifier())
4310
5.34M
    return EndLoc;
4311
4312
19
  do {
4313
19
    if (Tok.is(tok::l_square)) {
4314
16
      BalancedDelimiterTracker T(*this, tok::l_square);
4315
16
      T.consumeOpen();
4316
16
      T.skipToEnd();
4317
16
      EndLoc = T.getCloseLocation();
4318
3
    } else {
4319
3
      assert(Tok.is(tok::kw_alignas) && "not an attribute specifier");
4320
3
      ConsumeToken();
4321
3
      BalancedDelimiterTracker T(*this, tok::l_paren);
4322
3
      if (!T.consumeOpen())
4323
3
        T.skipToEnd();
4324
3
      EndLoc = T.getCloseLocation();
4325
3
    }
4326
19
  } while (isCXX11AttributeSpecifier());
4327
4328
19
  return EndLoc;
4329
19
}
4330
4331
/// Parse uuid() attribute when it appears in a [] Microsoft attribute.
4332
61
void Parser::ParseMicrosoftUuidAttributeArgs(ParsedAttributes &Attrs) {
4333
61
  assert(Tok.is(tok::identifier) && "Not a Microsoft attribute list");
4334
61
  IdentifierInfo *UuidIdent = Tok.getIdentifierInfo();
4335
61
  assert(UuidIdent->getName() == "uuid" && "Not a Microsoft attribute list");
4336
4337
61
  SourceLocation UuidLoc = Tok.getLocation();
4338
61
  ConsumeToken();
4339
4340
  // Ignore the left paren location for now.
4341
61
  BalancedDelimiterTracker T(*this, tok::l_paren);
4342
61
  if (T.consumeOpen()) {
4343
1
    Diag(Tok, diag::err_expected) << tok::l_paren;
4344
1
    return;
4345
1
  }
4346
4347
60
  ArgsVector ArgExprs;
4348
60
  if (Tok.is(tok::string_literal)) {
4349
    // Easy case: uuid("...") -- quoted string.
4350
35
    ExprResult StringResult = ParseStringLiteralExpression();
4351
35
    if (StringResult.isInvalid())
4352
0
      return;
4353
35
    ArgExprs.push_back(StringResult.get());
4354
25
  } else {
4355
    // something like uuid({000000A0-0000-0000-C000-000000000049}) -- no
4356
    // quotes in the parens. Just append the spelling of all tokens encountered
4357
    // until the closing paren.
4358
4359
25
    SmallString<42> StrBuffer; // 2 "", 36 bytes UUID, 2 optional {}, 1 nul
4360
25
    StrBuffer += "\"";
4361
4362
    // Since none of C++'s keywords match [a-f]+, accepting just tok::l_brace,
4363
    // tok::r_brace, tok::minus, tok::identifier (think C000) and
4364
    // tok::numeric_constant (0000) should be enough. But the spelling of the
4365
    // uuid argument is checked later anyways, so there's no harm in accepting
4366
    // almost anything here.
4367
    // cl is very strict about whitespace in this form and errors out if any
4368
    // is present, so check the space flags on the tokens.
4369
25
    SourceLocation StartLoc = Tok.getLocation();
4370
218
    while (Tok.isNot(tok::r_paren)) {
4371
197
      if (Tok.hasLeadingSpace() || 
Tok.isAtStartOfLine()194
) {
4372
4
        Diag(Tok, diag::err_attribute_uuid_malformed_guid);
4373
4
        SkipUntil(tok::r_paren, StopAtSemi);
4374
4
        return;
4375
4
      }
4376
193
      SmallString<16> SpellingBuffer;
4377
193
      SpellingBuffer.resize(Tok.getLength() + 1);
4378
193
      bool Invalid = false;
4379
193
      StringRef TokSpelling = PP.getSpelling(Tok, SpellingBuffer, &Invalid);
4380
193
      if (Invalid) {
4381
0
        SkipUntil(tok::r_paren, StopAtSemi);
4382
0
        return;
4383
0
      }
4384
193
      StrBuffer += TokSpelling;
4385
193
      ConsumeAnyToken();
4386
193
    }
4387
21
    StrBuffer += "\"";
4388
4389
21
    if (Tok.hasLeadingSpace() || 
Tok.isAtStartOfLine()20
) {
4390
2
      Diag(Tok, diag::err_attribute_uuid_malformed_guid);
4391
2
      ConsumeParen();
4392
2
      return;
4393
2
    }
4394
4395
    // Pretend the user wrote the appropriate string literal here.
4396
    // ActOnStringLiteral() copies the string data into the literal, so it's
4397
    // ok that the Token points to StrBuffer.
4398
19
    Token Toks[1];
4399
19
    Toks[0].startToken();
4400
19
    Toks[0].setKind(tok::string_literal);
4401
19
    Toks[0].setLocation(StartLoc);
4402
19
    Toks[0].setLiteralData(StrBuffer.data());
4403
19
    Toks[0].setLength(StrBuffer.size());
4404
19
    StringLiteral *UuidString =
4405
19
        cast<StringLiteral>(Actions.ActOnStringLiteral(Toks, nullptr).get());
4406
19
    ArgExprs.push_back(UuidString);
4407
19
  }
4408
4409
54
  if (!T.consumeClose()) {
4410
52
    Attrs.addNew(UuidIdent, SourceRange(UuidLoc, T.getCloseLocation()), nullptr,
4411
52
                 SourceLocation(), ArgExprs.data(), ArgExprs.size(),
4412
52
                 ParsedAttr::AS_Microsoft);
4413
52
  }
4414
54
}
4415
4416
/// ParseMicrosoftAttributes - Parse Microsoft attributes [Attr]
4417
///
4418
/// [MS] ms-attribute:
4419
///             '[' token-seq ']'
4420
///
4421
/// [MS] ms-attribute-seq:
4422
///             ms-attribute[opt]
4423
///             ms-attribute ms-attribute-seq
4424
void Parser::ParseMicrosoftAttributes(ParsedAttributes &attrs,
4425
75
                                      SourceLocation *endLoc) {
4426
75
  assert(Tok.is(tok::l_square) && "Not a Microsoft attribute list");
4427
4428
76
  do {
4429
    // FIXME: If this is actually a C++11 attribute, parse it as one.
4430
76
    BalancedDelimiterTracker T(*this, tok::l_square);
4431
76
    T.consumeOpen();
4432
4433
    // Skip most ms attributes except for a specific list.
4434
161
    while (true) {
4435
161
      SkipUntil(tok::r_square, tok::identifier, StopAtSemi | StopBeforeMatch);
4436
161
      if (Tok.isNot(tok::identifier)) // ']', but also eof
4437
76
        break;
4438
85
      if (Tok.getIdentifierInfo()->getName() == "uuid")
4439
61
        ParseMicrosoftUuidAttributeArgs(attrs);
4440
24
      else
4441
24
        ConsumeToken();
4442
85
    }
4443
4444
76
    T.consumeClose();
4445
76
    if (endLoc)
4446
0
      *endLoc = T.getCloseLocation();
4447
76
  } while (Tok.is(tok::l_square));
4448
75
}
4449
4450
void Parser::ParseMicrosoftIfExistsClassDeclaration(
4451
    DeclSpec::TST TagType, ParsedAttributes &AccessAttrs,
4452
9
    AccessSpecifier &CurAS) {
4453
9
  IfExistsCondition Result;
4454
9
  if (ParseMicrosoftIfExistsCondition(Result))
4455
0
    return;
4456
4457
9
  BalancedDelimiterTracker Braces(*this, tok::l_brace);
4458
9
  if (Braces.consumeOpen()) {
4459
0
    Diag(Tok, diag::err_expected) << tok::l_brace;
4460
0
    return;
4461
0
  }
4462
4463
9
  switch (Result.Behavior) {
4464
5
  case IEB_Parse:
4465
    // Parse the declarations below.
4466
5
    break;
4467
4468
1
  case IEB_Dependent:
4469
1
    Diag(Result.KeywordLoc, diag::warn_microsoft_dependent_exists)
4470
1
      << Result.IsIfExists;
4471
    // Fall through to skip.
4472
1
    LLVM_FALLTHROUGH;
4473
4474
4
  case IEB_Skip:
4475
4
    Braces.skipToEnd();
4476
4
    return;
4477
5
  }
4478
4479
11
  
while (5
Tok.isNot(tok::r_brace) &&
!isEofOrEom()6
) {
4480
    // __if_exists, __if_not_exists can nest.
4481
6
    if (Tok.isOneOf(tok::kw___if_exists, tok::kw___if_not_exists)) {
4482
1
      ParseMicrosoftIfExistsClassDeclaration(TagType,
4483
1
                                             AccessAttrs, CurAS);
4484
1
      continue;
4485
1
    }
4486
4487
    // Check for extraneous top-level semicolon.
4488
5
    if (Tok.is(tok::semi)) {
4489
0
      ConsumeExtraSemi(InsideStruct, TagType);
4490
0
      continue;
4491
0
    }
4492
4493
5
    AccessSpecifier AS = getAccessSpecifierIfPresent();
4494
5
    if (AS != AS_none) {
4495
      // Current token is a C++ access specifier.
4496
0
      CurAS = AS;
4497
0
      SourceLocation ASLoc = Tok.getLocation();
4498
0
      ConsumeToken();
4499
0
      if (Tok.is(tok::colon))
4500
0
        Actions.ActOnAccessSpecifier(AS, ASLoc, Tok.getLocation(),
4501
0
                                     ParsedAttributesView{});
4502
0
      else
4503
0
        Diag(Tok, diag::err_expected) << tok::colon;
4504
0
      ConsumeToken();
4505
0
      continue;
4506
0
    }
4507
4508
    // Parse all the comma separated declarators.
4509
5
    ParseCXXClassMemberDeclaration(CurAS, AccessAttrs);
4510
5
  }
4511
4512
5
  Braces.consumeClose();
4513
5
}