clang  3.7.0
ParseInit.cpp
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1 //===--- ParseInit.cpp - Initializer Parsing ------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements initializer parsing as specified by C99 6.7.8.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/Parse/Parser.h"
15 #include "RAIIObjectsForParser.h"
17 #include "clang/Sema/Designator.h"
18 #include "clang/Sema/Scope.h"
19 #include "llvm/ADT/SmallString.h"
20 #include "llvm/Support/raw_ostream.h"
21 using namespace clang;
22 
23 
24 /// MayBeDesignationStart - Return true if the current token might be the start
25 /// of a designator. If we can tell it is impossible that it is a designator,
26 /// return false.
27 bool Parser::MayBeDesignationStart() {
28  switch (Tok.getKind()) {
29  default:
30  return false;
31 
32  case tok::period: // designator: '.' identifier
33  return true;
34 
35  case tok::l_square: { // designator: array-designator
36  if (!PP.getLangOpts().CPlusPlus11)
37  return true;
38 
39  // C++11 lambda expressions and C99 designators can be ambiguous all the
40  // way through the closing ']' and to the next character. Handle the easy
41  // cases here, and fall back to tentative parsing if those fail.
42  switch (PP.LookAhead(0).getKind()) {
43  case tok::equal:
44  case tok::r_square:
45  // Definitely starts a lambda expression.
46  return false;
47 
48  case tok::amp:
49  case tok::kw_this:
50  case tok::identifier:
51  // We have to do additional analysis, because these could be the
52  // start of a constant expression or a lambda capture list.
53  break;
54 
55  default:
56  // Anything not mentioned above cannot occur following a '[' in a
57  // lambda expression.
58  return true;
59  }
60 
61  // Handle the complicated case below.
62  break;
63  }
64  case tok::identifier: // designation: identifier ':'
65  return PP.LookAhead(0).is(tok::colon);
66  }
67 
68  // Parse up to (at most) the token after the closing ']' to determine
69  // whether this is a C99 designator or a lambda.
70  TentativeParsingAction Tentative(*this);
71 
72  LambdaIntroducer Intro;
73  bool SkippedInits = false;
74  Optional<unsigned> DiagID(ParseLambdaIntroducer(Intro, &SkippedInits));
75 
76  if (DiagID) {
77  // If this can't be a lambda capture list, it's a designator.
78  Tentative.Revert();
79  return true;
80  }
81 
82  // Once we hit the closing square bracket, we look at the next
83  // token. If it's an '=', this is a designator. Otherwise, it's a
84  // lambda expression. This decision favors lambdas over the older
85  // GNU designator syntax, which allows one to omit the '=', but is
86  // consistent with GCC.
87  tok::TokenKind Kind = Tok.getKind();
88  // FIXME: If we didn't skip any inits, parse the lambda from here
89  // rather than throwing away then reparsing the LambdaIntroducer.
90  Tentative.Revert();
91  return Kind == tok::equal;
92 }
93 
95  Designation &Desig) {
96  // If we have exactly one array designator, this used the GNU
97  // 'designation: array-designator' extension, otherwise there should be no
98  // designators at all!
99  if (Desig.getNumDesignators() == 1 &&
100  (Desig.getDesignator(0).isArrayDesignator() ||
102  P.Diag(Loc, diag::ext_gnu_missing_equal_designator);
103  else if (Desig.getNumDesignators() > 0)
104  P.Diag(Loc, diag::err_expected_equal_designator);
105 }
106 
107 /// ParseInitializerWithPotentialDesignator - Parse the 'initializer' production
108 /// checking to see if the token stream starts with a designator.
109 ///
110 /// designation:
111 /// designator-list '='
112 /// [GNU] array-designator
113 /// [GNU] identifier ':'
114 ///
115 /// designator-list:
116 /// designator
117 /// designator-list designator
118 ///
119 /// designator:
120 /// array-designator
121 /// '.' identifier
122 ///
123 /// array-designator:
124 /// '[' constant-expression ']'
125 /// [GNU] '[' constant-expression '...' constant-expression ']'
126 ///
127 /// NOTE: [OBC] allows '[ objc-receiver objc-message-args ]' as an
128 /// initializer (because it is an expression). We need to consider this case
129 /// when parsing array designators.
130 ///
131 ExprResult Parser::ParseInitializerWithPotentialDesignator() {
132 
133  // If this is the old-style GNU extension:
134  // designation ::= identifier ':'
135  // Handle it as a field designator. Otherwise, this must be the start of a
136  // normal expression.
137  if (Tok.is(tok::identifier)) {
138  const IdentifierInfo *FieldName = Tok.getIdentifierInfo();
139 
140  SmallString<256> NewSyntax;
141  llvm::raw_svector_ostream(NewSyntax) << '.' << FieldName->getName()
142  << " = ";
143 
144  SourceLocation NameLoc = ConsumeToken(); // Eat the identifier.
145 
146  assert(Tok.is(tok::colon) && "MayBeDesignationStart not working properly!");
148 
149  Diag(NameLoc, diag::ext_gnu_old_style_field_designator)
150  << FixItHint::CreateReplacement(SourceRange(NameLoc, ColonLoc),
151  NewSyntax);
152 
153  Designation D;
154  D.AddDesignator(Designator::getField(FieldName, SourceLocation(), NameLoc));
155  return Actions.ActOnDesignatedInitializer(D, ColonLoc, true,
156  ParseInitializer());
157  }
158 
159  // Desig - This is initialized when we see our first designator. We may have
160  // an objc message send with no designator, so we don't want to create this
161  // eagerly.
162  Designation Desig;
163 
164  // Parse each designator in the designator list until we find an initializer.
165  while (Tok.is(tok::period) || Tok.is(tok::l_square)) {
166  if (Tok.is(tok::period)) {
167  // designator: '.' identifier
168  SourceLocation DotLoc = ConsumeToken();
169 
170  if (Tok.isNot(tok::identifier)) {
171  Diag(Tok.getLocation(), diag::err_expected_field_designator);
172  return ExprError();
173  }
174 
176  Tok.getLocation()));
177  ConsumeToken(); // Eat the identifier.
178  continue;
179  }
180 
181  // We must have either an array designator now or an objc message send.
182  assert(Tok.is(tok::l_square) && "Unexpected token!");
183 
184  // Handle the two forms of array designator:
185  // array-designator: '[' constant-expression ']'
186  // array-designator: '[' constant-expression '...' constant-expression ']'
187  //
188  // Also, we have to handle the case where the expression after the
189  // designator an an objc message send: '[' objc-message-expr ']'.
190  // Interesting cases are:
191  // [foo bar] -> objc message send
192  // [foo] -> array designator
193  // [foo ... bar] -> array designator
194  // [4][foo bar] -> obsolete GNU designation with objc message send.
195  //
196  // We do not need to check for an expression starting with [[ here. If it
197  // contains an Objective-C message send, then it is not an ill-formed
198  // attribute. If it is a lambda-expression within an array-designator, then
199  // it will be rejected because a constant-expression cannot begin with a
200  // lambda-expression.
201  InMessageExpressionRAIIObject InMessage(*this, true);
202 
203  BalancedDelimiterTracker T(*this, tok::l_square);
204  T.consumeOpen();
205  SourceLocation StartLoc = T.getOpenLocation();
206 
207  ExprResult Idx;
208 
209  // If Objective-C is enabled and this is a typename (class message
210  // send) or send to 'super', parse this as a message send
211  // expression. We handle C++ and C separately, since C++ requires
212  // much more complicated parsing.
213  if (getLangOpts().ObjC1 && getLangOpts().CPlusPlus) {
214  // Send to 'super'.
215  if (Tok.is(tok::identifier) && Tok.getIdentifierInfo() == Ident_super &&
216  NextToken().isNot(tok::period) &&
218  CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
219  return ParseAssignmentExprWithObjCMessageExprStart(StartLoc,
220  ConsumeToken(),
221  ParsedType(),
222  nullptr);
223  }
224 
225  // Parse the receiver, which is either a type or an expression.
226  bool IsExpr;
227  void *TypeOrExpr;
228  if (ParseObjCXXMessageReceiver(IsExpr, TypeOrExpr)) {
229  SkipUntil(tok::r_square, StopAtSemi);
230  return ExprError();
231  }
232 
233  // If the receiver was a type, we have a class message; parse
234  // the rest of it.
235  if (!IsExpr) {
236  CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
237  return ParseAssignmentExprWithObjCMessageExprStart(StartLoc,
238  SourceLocation(),
239  ParsedType::getFromOpaquePtr(TypeOrExpr),
240  nullptr);
241  }
242 
243  // If the receiver was an expression, we still don't know
244  // whether we have a message send or an array designator; just
245  // adopt the expression for further analysis below.
246  // FIXME: potentially-potentially evaluated expression above?
247  Idx = ExprResult(static_cast<Expr*>(TypeOrExpr));
248  } else if (getLangOpts().ObjC1 && Tok.is(tok::identifier)) {
249  IdentifierInfo *II = Tok.getIdentifierInfo();
250  SourceLocation IILoc = Tok.getLocation();
251  ParsedType ReceiverType;
252  // Three cases. This is a message send to a type: [type foo]
253  // This is a message send to super: [super foo]
254  // This is a message sent to an expr: [super.bar foo]
255  switch (Actions.getObjCMessageKind(
256  getCurScope(), II, IILoc, II == Ident_super,
257  NextToken().is(tok::period), ReceiverType)) {
259  CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
260  return ParseAssignmentExprWithObjCMessageExprStart(StartLoc,
261  ConsumeToken(),
262  ParsedType(),
263  nullptr);
264 
266  CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
267  ConsumeToken(); // the identifier
268  if (!ReceiverType) {
269  SkipUntil(tok::r_square, StopAtSemi);
270  return ExprError();
271  }
272 
273  // Parse type arguments and protocol qualifiers.
274  if (Tok.is(tok::less)) {
275  SourceLocation NewEndLoc;
276  TypeResult NewReceiverType
277  = parseObjCTypeArgsAndProtocolQualifiers(IILoc, ReceiverType,
278  /*consumeLastToken=*/true,
279  NewEndLoc);
280  if (!NewReceiverType.isUsable()) {
281  SkipUntil(tok::r_square, StopAtSemi);
282  return ExprError();
283  }
284 
285  ReceiverType = NewReceiverType.get();
286  }
287 
288  return ParseAssignmentExprWithObjCMessageExprStart(StartLoc,
289  SourceLocation(),
290  ReceiverType,
291  nullptr);
292 
294  // Fall through; we'll just parse the expression and
295  // (possibly) treat this like an Objective-C message send
296  // later.
297  break;
298  }
299  }
300 
301  // Parse the index expression, if we haven't already gotten one
302  // above (which can only happen in Objective-C++).
303  // Note that we parse this as an assignment expression, not a constant
304  // expression (allowing *=, =, etc) to handle the objc case. Sema needs
305  // to validate that the expression is a constant.
306  // FIXME: We also need to tell Sema that we're in a
307  // potentially-potentially evaluated context.
308  if (!Idx.get()) {
310  if (Idx.isInvalid()) {
311  SkipUntil(tok::r_square, StopAtSemi);
312  return Idx;
313  }
314  }
315 
316  // Given an expression, we could either have a designator (if the next
317  // tokens are '...' or ']' or an objc message send. If this is an objc
318  // message send, handle it now. An objc-message send is the start of
319  // an assignment-expression production.
320  if (getLangOpts().ObjC1 && Tok.isNot(tok::ellipsis) &&
321  Tok.isNot(tok::r_square)) {
322  CheckArrayDesignatorSyntax(*this, Tok.getLocation(), Desig);
323  return ParseAssignmentExprWithObjCMessageExprStart(StartLoc,
324  SourceLocation(),
325  ParsedType(),
326  Idx.get());
327  }
328 
329  // If this is a normal array designator, remember it.
330  if (Tok.isNot(tok::ellipsis)) {
331  Desig.AddDesignator(Designator::getArray(Idx.get(), StartLoc));
332  } else {
333  // Handle the gnu array range extension.
334  Diag(Tok, diag::ext_gnu_array_range);
335  SourceLocation EllipsisLoc = ConsumeToken();
336 
338  if (RHS.isInvalid()) {
339  SkipUntil(tok::r_square, StopAtSemi);
340  return RHS;
341  }
343  RHS.get(),
344  StartLoc, EllipsisLoc));
345  }
346 
347  T.consumeClose();
348  Desig.getDesignator(Desig.getNumDesignators() - 1).setRBracketLoc(
349  T.getCloseLocation());
350  }
351 
352  // Okay, we're done with the designator sequence. We know that there must be
353  // at least one designator, because the only case we can get into this method
354  // without a designator is when we have an objc message send. That case is
355  // handled and returned from above.
356  assert(!Desig.empty() && "Designator is empty?");
357 
358  // Handle a normal designator sequence end, which is an equal.
359  if (Tok.is(tok::equal)) {
360  SourceLocation EqualLoc = ConsumeToken();
361  return Actions.ActOnDesignatedInitializer(Desig, EqualLoc, false,
362  ParseInitializer());
363  }
364 
365  // We read some number of designators and found something that isn't an = or
366  // an initializer. If we have exactly one array designator, this
367  // is the GNU 'designation: array-designator' extension. Otherwise, it is a
368  // parse error.
369  if (Desig.getNumDesignators() == 1 &&
370  (Desig.getDesignator(0).isArrayDesignator() ||
372  Diag(Tok, diag::ext_gnu_missing_equal_designator)
373  << FixItHint::CreateInsertion(Tok.getLocation(), "= ");
374  return Actions.ActOnDesignatedInitializer(Desig, Tok.getLocation(),
375  true, ParseInitializer());
376  }
377 
378  Diag(Tok, diag::err_expected_equal_designator);
379  return ExprError();
380 }
381 
382 
383 /// ParseBraceInitializer - Called when parsing an initializer that has a
384 /// leading open brace.
385 ///
386 /// initializer: [C99 6.7.8]
387 /// '{' initializer-list '}'
388 /// '{' initializer-list ',' '}'
389 /// [GNU] '{' '}'
390 ///
391 /// initializer-list:
392 /// designation[opt] initializer ...[opt]
393 /// initializer-list ',' designation[opt] initializer ...[opt]
394 ///
395 ExprResult Parser::ParseBraceInitializer() {
396  InMessageExpressionRAIIObject InMessage(*this, false);
397 
398  BalancedDelimiterTracker T(*this, tok::l_brace);
399  T.consumeOpen();
400  SourceLocation LBraceLoc = T.getOpenLocation();
401 
402  /// InitExprs - This is the actual list of expressions contained in the
403  /// initializer.
404  ExprVector InitExprs;
405 
406  if (Tok.is(tok::r_brace)) {
407  // Empty initializers are a C++ feature and a GNU extension to C.
408  if (!getLangOpts().CPlusPlus)
409  Diag(LBraceLoc, diag::ext_gnu_empty_initializer);
410  // Match the '}'.
411  return Actions.ActOnInitList(LBraceLoc, None, ConsumeBrace());
412  }
413 
414  bool InitExprsOk = true;
415 
416  while (1) {
417  // Handle Microsoft __if_exists/if_not_exists if necessary.
418  if (getLangOpts().MicrosoftExt && (Tok.is(tok::kw___if_exists) ||
419  Tok.is(tok::kw___if_not_exists))) {
420  if (ParseMicrosoftIfExistsBraceInitializer(InitExprs, InitExprsOk)) {
421  if (Tok.isNot(tok::comma)) break;
422  ConsumeToken();
423  }
424  if (Tok.is(tok::r_brace)) break;
425  continue;
426  }
427 
428  // Parse: designation[opt] initializer
429 
430  // If we know that this cannot be a designation, just parse the nested
431  // initializer directly.
432  ExprResult SubElt;
433  if (MayBeDesignationStart())
434  SubElt = ParseInitializerWithPotentialDesignator();
435  else
436  SubElt = ParseInitializer();
437 
438  if (Tok.is(tok::ellipsis))
439  SubElt = Actions.ActOnPackExpansion(SubElt.get(), ConsumeToken());
440 
441  SubElt = Actions.CorrectDelayedTyposInExpr(SubElt.get());
442 
443  // If we couldn't parse the subelement, bail out.
444  if (SubElt.isUsable()) {
445  InitExprs.push_back(SubElt.get());
446  } else {
447  InitExprsOk = false;
448 
449  // We have two ways to try to recover from this error: if the code looks
450  // grammatically ok (i.e. we have a comma coming up) try to continue
451  // parsing the rest of the initializer. This allows us to emit
452  // diagnostics for later elements that we find. If we don't see a comma,
453  // assume there is a parse error, and just skip to recover.
454  // FIXME: This comment doesn't sound right. If there is a r_brace
455  // immediately, it can't be an error, since there is no other way of
456  // leaving this loop except through this if.
457  if (Tok.isNot(tok::comma)) {
458  SkipUntil(tok::r_brace, StopBeforeMatch);
459  break;
460  }
461  }
462 
463  // If we don't have a comma continued list, we're done.
464  if (Tok.isNot(tok::comma)) break;
465 
466  // TODO: save comma locations if some client cares.
467  ConsumeToken();
468 
469  // Handle trailing comma.
470  if (Tok.is(tok::r_brace)) break;
471  }
472 
473  bool closed = !T.consumeClose();
474 
475  if (InitExprsOk && closed)
476  return Actions.ActOnInitList(LBraceLoc, InitExprs,
477  T.getCloseLocation());
478 
479  return ExprError(); // an error occurred.
480 }
481 
482 
483 // Return true if a comma (or closing brace) is necessary after the
484 // __if_exists/if_not_exists statement.
485 bool Parser::ParseMicrosoftIfExistsBraceInitializer(ExprVector &InitExprs,
486  bool &InitExprsOk) {
487  bool trailingComma = false;
488  IfExistsCondition Result;
489  if (ParseMicrosoftIfExistsCondition(Result))
490  return false;
491 
492  BalancedDelimiterTracker Braces(*this, tok::l_brace);
493  if (Braces.consumeOpen()) {
494  Diag(Tok, diag::err_expected) << tok::l_brace;
495  return false;
496  }
497 
498  switch (Result.Behavior) {
499  case IEB_Parse:
500  // Parse the declarations below.
501  break;
502 
503  case IEB_Dependent:
504  Diag(Result.KeywordLoc, diag::warn_microsoft_dependent_exists)
505  << Result.IsIfExists;
506  // Fall through to skip.
507 
508  case IEB_Skip:
509  Braces.skipToEnd();
510  return false;
511  }
512 
513  while (!isEofOrEom()) {
514  trailingComma = false;
515  // If we know that this cannot be a designation, just parse the nested
516  // initializer directly.
517  ExprResult SubElt;
518  if (MayBeDesignationStart())
519  SubElt = ParseInitializerWithPotentialDesignator();
520  else
521  SubElt = ParseInitializer();
522 
523  if (Tok.is(tok::ellipsis))
524  SubElt = Actions.ActOnPackExpansion(SubElt.get(), ConsumeToken());
525 
526  // If we couldn't parse the subelement, bail out.
527  if (!SubElt.isInvalid())
528  InitExprs.push_back(SubElt.get());
529  else
530  InitExprsOk = false;
531 
532  if (Tok.is(tok::comma)) {
533  ConsumeToken();
534  trailingComma = true;
535  }
536 
537  if (Tok.is(tok::r_brace))
538  break;
539  }
540 
541  Braces.consumeClose();
542 
543  return !trailingComma;
544 }
bool isInvalid() const
Definition: Ownership.h:159
const LangOptions & getLangOpts() const
Definition: Parse/Parser.h:243
const Token & LookAhead(unsigned N)
Peeks ahead N tokens and returns that token without consuming any tokens.
ActionResult< Expr * > ExprResult
Definition: Ownership.h:252
PtrTy get() const
Definition: Ownership.h:163
bool SkipUntil(tok::TokenKind T, SkipUntilFlags Flags=static_cast< SkipUntilFlags >(0))
Definition: Parse/Parser.h:861
const Token & NextToken()
Definition: Parse/Parser.h:546
The message is a class message, and the identifier is a type name.
Definition: Sema.h:7355
OpaquePtr< QualType > ParsedType
Definition: Ownership.h:233
const LangOptions & getLangOpts() const
Definition: Preprocessor.h:679
RAII class that helps handle the parsing of an open/close delimiter pair, such as braces { ...
ExprResult ActOnDesignatedInitializer(Designation &Desig, SourceLocation Loc, bool GNUSyntax, ExprResult Init)
Definition: SemaInit.cpp:2662
tok::TokenKind getKind() const
Definition: Token.h:90
bool empty() const
Definition: Designator.h:191
bool isArrayDesignator() const
Definition: Designator.h:71
AnnotatingParser & P
StringRef getName() const
Return the actual identifier string.
The message is an instance message.
Definition: Sema.h:7352
SourceLocation getLocation() const
Return a source location identifier for the specified offset in the current file. ...
Definition: Token.h:124
bool isNot(tok::TokenKind K) const
Definition: Token.h:96
ObjCMessageKind getObjCMessageKind(Scope *S, IdentifierInfo *Name, SourceLocation NameLoc, bool IsSuper, bool HasTrailingDot, ParsedType &ReceiverType)
const IdentifierInfo * getField() const
Definition: Designator.h:74
The result type of a method or function.
ParsedTemplateArgument ActOnPackExpansion(const ParsedTemplateArgument &Arg, SourceLocation EllipsisLoc)
Invoked when parsing a template argument followed by an ellipsis, which creates a pack expansion...
Kind
Encodes a location in the source. The SourceManager can decode this to get at the full include stack...
Scope * getCurScope() const
Definition: Parse/Parser.h:250
bool isArrayRangeDesignator() const
Definition: Designator.h:72
const Designator & getDesignator(unsigned Idx) const
Definition: Designator.h:194
The message is sent to 'super'.
Definition: Sema.h:7350
ExprResult ActOnInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, SourceLocation RBraceLoc)
Definition: SemaExpr.cpp:5163
TokenKind
Provides a simple uniform namespace for tokens from all C languages.
Definition: TokenKinds.h:25
bool is(tok::TokenKind K) const
Definition: Token.h:95
bool isInObjcMethodScope() const
Definition: Scope.h:339
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID)
static void CheckArrayDesignatorSyntax(Parser &P, SourceLocation Loc, Designation &Desig)
Definition: ParseInit.cpp:94
ExprResult ParseAssignmentExpression(TypeCastState isTypeCast=NotTypeCast)
Parse an expr that doesn't include (top-level) commas.
Definition: ParseExpr.cpp:157
static FixItHint CreateInsertion(SourceLocation InsertionLoc, StringRef Code, bool BeforePreviousInsertions=false)
Create a code modification hint that inserts the given code string at a specific location.
Definition: Diagnostic.h:78
bool isUsable() const
Definition: Ownership.h:160
ExprResult ParseConstantExpression(TypeCastState isTypeCast=NotTypeCast)
Definition: ParseExpr.cpp:195
void AddDesignator(Designator D)
AddDesignator - Add a designator to the end of this list.
Definition: Designator.h:187
SourceLocation ConsumeToken()
Definition: Parse/Parser.h:284
ExprResult CorrectDelayedTyposInExpr(Expr *E, VarDecl *InitDecl=nullptr, llvm::function_ref< ExprResult(Expr *)> Filter=[](Expr *E) -> ExprResult{return E;})
Process any TypoExprs in the given Expr and its children, generating diagnostics as appropriate and r...
static FixItHint CreateReplacement(CharSourceRange RemoveRange, StringRef Code)
Create a code modification hint that replaces the given source range with the given code string...
Definition: Diagnostic.h:115
Represents a complete lambda introducer.
Definition: DeclSpec.h:2255
ExprResult ExprError()
Definition: Ownership.h:267
static Designator getArray(Expr *Index, SourceLocation LBracketLoc)
Definition: Designator.h:136
A trivial tuple used to represent a source range.
static Designator getArrayRange(Expr *Start, Expr *End, SourceLocation LBracketLoc, SourceLocation EllipsisLoc)
Definition: Designator.h:146
unsigned getNumDesignators() const
Definition: Designator.h:193
static OpaquePtr getFromOpaquePtr(void *P)
Definition: Ownership.h:85
SourceLocation ColonLoc
Location of ':'.
Definition: OpenMPClause.h:260
Stop skipping at specified token, but don't skip the token itself.
Definition: Parse/Parser.h:843
IdentifierInfo * getIdentifierInfo() const
Definition: Token.h:177