clang 10.0.0git

ParseInit.cpp
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1 //===--- ParseInit.cpp - Initializer Parsing ------------------------------===//
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 initializer parsing as specified by C99 6.7.8.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "clang/Parse/ParseDiagnostic.h"
14 #include "clang/Parse/Parser.h"
15 #include "clang/Parse/RAIIObjectsForParser.h"
16 #include "clang/Sema/Designator.h"
17 #include "clang/Sema/Scope.h"
18 #include "llvm/ADT/SmallString.h"
19 using namespace clang;
20
21
22 /// MayBeDesignationStart - Return true if the current token might be the start
23 /// of a designator. If we can tell it is impossible that it is a designator,
24 /// return false.
25 bool Parser::MayBeDesignationStart() {
26 switch (Tok.getKind()) {
27 default:
28 return false;
29
30 case tok::period: // designator: '.' identifier
31 return true;
32
33 case tok::l_square: { // designator: array-designator
34 if (!PP.getLangOpts().CPlusPlus11)
35 return true;
36
37 // C++11 lambda expressions and C99 designators can be ambiguous all the
38 // way through the closing ']' and to the next character. Handle the easy
39 // cases here, and fall back to tentative parsing if those fail.
40 switch (PP.LookAhead(0).getKind()) {
41 case tok::equal:
42 case tok::ellipsis:
43 case tok::r_square:
44 // Definitely starts a lambda expression.
45 return false;
46
47 case tok::amp:
48 case tok::kw_this:
49 case tok::star:
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 RevertingTentativeParsingAction Tentative(*this);
71
72 LambdaIntroducer Intro;
73 LambdaIntroducerTentativeParse ParseResult;
74 if (ParseLambdaIntroducer(Intro, &ParseResult)) {
75 // Hit and diagnosed an error in a lambda.
76 // FIXME: Tell the caller this happened so they can recover.
77 return true;
78 }
79
80 switch (ParseResult) {
81 case LambdaIntroducerTentativeParse::Success:
82 case LambdaIntroducerTentativeParse::Incomplete:
83 // Might be a lambda-expression. Keep looking.
84 // FIXME: If our tentative parse was not incomplete, parse the lambda from
85 // here rather than throwing away then reparsing the LambdaIntroducer.
86 break;
87
88 case LambdaIntroducerTentativeParse::MessageSend:
89 case LambdaIntroducerTentativeParse::Invalid:
90 // Can't be a lambda-expression. Treat it as a designator.
91 // FIXME: Should we disambiguate against a message-send?
92 return true;
93 }
94
95 // Once we hit the closing square bracket, we look at the next
96 // token. If it's an '=', this is a designator. Otherwise, it's a
97 // lambda expression. This decision favors lambdas over the older
98 // GNU designator syntax, which allows one to omit the '=', but is
99 // consistent with GCC.
100 return Tok.is(tok::equal);
101 }
102
103 static void CheckArrayDesignatorSyntax(Parser &P, SourceLocation Loc,
104 Designation &Desig) {
105 // If we have exactly one array designator, this used the GNU
106 // 'designation: array-designator' extension, otherwise there should be no
107 // designators at all!
108 if (Desig.getNumDesignators() == 1 &&
109 (Desig.getDesignator(0).isArrayDesignator() ||
110 Desig.getDesignator(0).isArrayRangeDesignator()))
111 P.Diag(Loc, diag::ext_gnu_missing_equal_designator);
112 else if (Desig.getNumDesignators() > 0)
113 P.Diag(Loc, diag::err_expected_equal_designator);
114 }
115
116 /// ParseInitializerWithPotentialDesignator - Parse the 'initializer' production
117 /// checking to see if the token stream starts with a designator.
118 ///
119 /// C99:
120 ///
121 /// designation:
122 /// designator-list '='
123 /// [GNU] array-designator
124 /// [GNU] identifier ':'
125 ///
126 /// designator-list:
127 /// designator
128 /// designator-list designator
129 ///
130 /// designator:
131 /// array-designator
132 /// '.' identifier
133 ///
134 /// array-designator:
135 /// '[' constant-expression ']'
136 /// [GNU] '[' constant-expression '...' constant-expression ']'
137 ///
138 /// C++20:
139 ///
140 /// designated-initializer-list:
141 /// designated-initializer-clause
142 /// designated-initializer-list ',' designated-initializer-clause
143 ///
144 /// designated-initializer-clause:
145 /// designator brace-or-equal-initializer
146 ///
147 /// designator:
148 /// '.' identifier
149 ///
150 /// We allow the C99 syntax extensions in C++20, but do not allow the C++20
151 /// extension (a braced-init-list after the designator with no '=') in C99.
152 ///
153 /// NOTE: [OBC] allows '[ objc-receiver objc-message-args ]' as an
154 /// initializer (because it is an expression). We need to consider this case
155 /// when parsing array designators.
156 ///
157 ExprResult Parser::ParseInitializerWithPotentialDesignator() {
158
159 // If this is the old-style GNU extension:
160 // designation ::= identifier ':'
161 // Handle it as a field designator. Otherwise, this must be the start of a
162 // normal expression.
163 if (Tok.is(tok::identifier)) {
164 const IdentifierInfo *FieldName = Tok.getIdentifierInfo();
165
166 SmallString<256> NewSyntax;
167 llvm::raw_svector_ostream(NewSyntax) << '.' << FieldName->getName()
168 << " = ";
169
170 SourceLocation NameLoc = ConsumeToken(); // Eat the identifier.
171
172 assert(Tok.is(tok::colon) && "MayBeDesignationStart not working properly!");
173 SourceLocation ColonLoc = ConsumeToken();
174
175 Diag(NameLoc, diag::ext_gnu_old_style_field_designator)
176 << FixItHint::CreateReplacement(SourceRange(NameLoc, ColonLoc),
177 NewSyntax);
178
179 Designation D;
180 D.AddDesignator(Designator::getField(FieldName, SourceLocation(), NameLoc));
181 return Actions.ActOnDesignatedInitializer(D, ColonLoc, true,
182 ParseInitializer());
183 }
184
185 // Desig - This is initialized when we see our first designator. We may have
186 // an objc message send with no designator, so we don't want to create this
187 // eagerly.
188 Designation Desig;
189
190 // Parse each designator in the designator list until we find an initializer.
191 while (Tok.is(tok::period) || Tok.is(tok::l_square)) {
192 if (Tok.is(tok::period)) {
193 // designator: '.' identifier
194 SourceLocation DotLoc = ConsumeToken();
195
196 if (Tok.isNot(tok::identifier)) {
197 Diag(Tok.getLocation(), diag::err_expected_field_designator);
198 return ExprError();
199 }
200
201 Desig.AddDesignator(Designator::getField(Tok.getIdentifierInfo(), DotLoc,
202 Tok.getLocation()));
203 ConsumeToken(); // Eat the identifier.
204 continue;
205 }
206
207 // We must have either an array designator now or an objc message send.
208 assert(Tok.is(tok::l_square) && "Unexpected token!");
209
210 // Handle the two forms of array designator:
211 // array-designator: '[' constant-expression ']'
212 // array-designator: '[' constant-expression '...' constant-expression ']'
213 //
214 // Also, we have to handle the case where the expression after the
215 // designator an an objc message send: '[' objc-message-expr ']'.
216 // Interesting cases are:
217 // [foo bar] -> objc message send
218 // [foo] -> array designator
219 // [foo ... bar] -> array designator
220 // [4][foo bar] -> obsolete GNU designation with objc message send.
221 //
222 // We do not need to check for an expression starting with [[ here. If it
223 // contains an Objective-C message send, then it is not an ill-formed
224 // attribute. If it is a lambda-expression within an array-designator, then
225 // it will be rejected because a constant-expression cannot begin with a
226 // lambda-expression.
227 InMessageExpressionRAIIObject InMessage(*this, true);
228
229 BalancedDelimiterTracker T(*this, tok::l_square);
230 T.consumeOpen();
231 SourceLocation StartLoc = T.getOpenLocation();
232
233 ExprResult Idx;
234
235 // If Objective-C is enabled and this is a typename (class message
236 // send) or send to 'super', parse this as a message send
237 // expression. We handle C++ and C separately, since C++ requires
238 // much more complicated parsing.
239 if (getLangOpts().ObjC && getLangOpts().CPlusPlus) {
240 // Send to 'super'.
241 if (Tok.is(tok::identifier) && Tok.getIdentifierInfo() == Ident_super &&
242 NextToken().isNot(tok::period) &&
243 getCurScope()->isInObjcMethodScope()) {
244 CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
245 return ParseAssignmentExprWithObjCMessageExprStart(
246 StartLoc, ConsumeToken(), nullptr, nullptr);
247 }
248
249 // Parse the receiver, which is either a type or an expression.
250 bool IsExpr;
251 void *TypeOrExpr;
252 if (ParseObjCXXMessageReceiver(IsExpr, TypeOrExpr)) {
253 SkipUntil(tok::r_square, StopAtSemi);
254 return ExprError();
255 }
256
257 // If the receiver was a type, we have a class message; parse
258 // the rest of it.
259 if (!IsExpr) {
260 CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
261 return ParseAssignmentExprWithObjCMessageExprStart(StartLoc,
262 SourceLocation(),
263 ParsedType::getFromOpaquePtr(TypeOrExpr),
264 nullptr);
265 }
266
267 // If the receiver was an expression, we still don't know
268 // whether we have a message send or an array designator; just
269 // adopt the expression for further analysis below.
270 // FIXME: potentially-potentially evaluated expression above?
271 Idx = ExprResult(static_cast<Expr*>(TypeOrExpr));
272 } else if (getLangOpts().ObjC && Tok.is(tok::identifier)) {
273 IdentifierInfo *II = Tok.getIdentifierInfo();
274 SourceLocation IILoc = Tok.getLocation();
275 ParsedType ReceiverType;
276 // Three cases. This is a message send to a type: [type foo]
277 // This is a message send to super: [super foo]
278 // This is a message sent to an expr: [super.bar foo]
279 switch (Actions.getObjCMessageKind(
280 getCurScope(), II, IILoc, II == Ident_super,
281 NextToken().is(tok::period), ReceiverType)) {
282 case Sema::ObjCSuperMessage:
283 CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
284 return ParseAssignmentExprWithObjCMessageExprStart(
285 StartLoc, ConsumeToken(), nullptr, nullptr);
286
287 case Sema::ObjCClassMessage:
288 CheckArrayDesignatorSyntax(*this, StartLoc, Desig);
289 ConsumeToken(); // the identifier
290 if (!ReceiverType) {
291 SkipUntil(tok::r_square, StopAtSemi);
292 return ExprError();
293 }
294
295 // Parse type arguments and protocol qualifiers.
296 if (Tok.is(tok::less)) {
297 SourceLocation NewEndLoc;
298 TypeResult NewReceiverType
299 = parseObjCTypeArgsAndProtocolQualifiers(IILoc, ReceiverType,
300 /*consumeLastToken=*/true,
301 NewEndLoc);
302 if (!NewReceiverType.isUsable()) {
303 SkipUntil(tok::r_square, StopAtSemi);
304 return ExprError();
305 }
306
307 ReceiverType = NewReceiverType.get();
308 }
309
310 return ParseAssignmentExprWithObjCMessageExprStart(StartLoc,
311 SourceLocation(),
312 ReceiverType,
313 nullptr);
314
315 case Sema::ObjCInstanceMessage:
316 // Fall through; we'll just parse the expression and
317 // (possibly) treat this like an Objective-C message send
318 // later.
319 break;
320 }
321 }
322
323 // Parse the index expression, if we haven't already gotten one
324 // above (which can only happen in Objective-C++).
325 // Note that we parse this as an assignment expression, not a constant
326 // expression (allowing *=, =, etc) to handle the objc case. Sema needs
327 // to validate that the expression is a constant.
328 // FIXME: We also need to tell Sema that we're in a
329 // potentially-potentially evaluated context.
330 if (!Idx.get()) {
331 Idx = ParseAssignmentExpression();
332 if (Idx.isInvalid()) {
333 SkipUntil(tok::r_square, StopAtSemi);
334 return Idx;
335 }
336 }
337
338 // Given an expression, we could either have a designator (if the next
339 // tokens are '...' or ']' or an objc message send. If this is an objc
340 // message send, handle it now. An objc-message send is the start of
341 // an assignment-expression production.
342 if (getLangOpts().ObjC && Tok.isNot(tok::ellipsis) &&
343 Tok.isNot(tok::r_square)) {
344 CheckArrayDesignatorSyntax(*this, Tok.getLocation(), Desig);
345 return ParseAssignmentExprWithObjCMessageExprStart(
346 StartLoc, SourceLocation(), nullptr, Idx.get());
347 }
348
349 // If this is a normal array designator, remember it.
350 if (Tok.isNot(tok::ellipsis)) {
351 Desig.AddDesignator(Designator::getArray(Idx.get(), StartLoc));
352 } else {
353 // Handle the gnu array range extension.
354 Diag(Tok, diag::ext_gnu_array_range);
355 SourceLocation EllipsisLoc = ConsumeToken();
356
357 ExprResult RHS(ParseConstantExpression());
358 if (RHS.isInvalid()) {
359 SkipUntil(tok::r_square, StopAtSemi);
360 return RHS;
361 }
362 Desig.AddDesignator(Designator::getArrayRange(Idx.get(),
363 RHS.get(),
364 StartLoc, EllipsisLoc));
365 }
366
367 T.consumeClose();
368 Desig.getDesignator(Desig.getNumDesignators() - 1).setRBracketLoc(
369 T.getCloseLocation());
370 }
371
372 // Okay, we're done with the designator sequence. We know that there must be
373 // at least one designator, because the only case we can get into this method
374 // without a designator is when we have an objc message send. That case is
375 // handled and returned from above.
376 assert(!Desig.empty() && "Designator is empty?");
377
378 // Handle a normal designator sequence end, which is an equal.
379 if (Tok.is(tok::equal)) {
380 SourceLocation EqualLoc = ConsumeToken();
381 return Actions.ActOnDesignatedInitializer(Desig, EqualLoc, false,
382 ParseInitializer());
383 }
384
385 // Handle a C++20 braced designated initialization, which results in
386 // direct-list-initialization of the aggregate element. We allow this as an
387 // extension from C++11 onwards (when direct-list-initialization was added).
388 if (Tok.is(tok::l_brace) && getLangOpts().CPlusPlus11) {
389 return Actions.ActOnDesignatedInitializer(Desig, SourceLocation(), false,
390 ParseBraceInitializer());
391 }
392
393 // We read some number of designators and found something that isn't an = or
394 // an initializer. If we have exactly one array designator, this
395 // is the GNU 'designation: array-designator' extension. Otherwise, it is a
396 // parse error.
397 if (Desig.getNumDesignators() == 1 &&
398 (Desig.getDesignator(0).isArrayDesignator() ||
399 Desig.getDesignator(0).isArrayRangeDesignator())) {
400 Diag(Tok, diag::ext_gnu_missing_equal_designator)
401 << FixItHint::CreateInsertion(Tok.getLocation(), "= ");
402 return Actions.ActOnDesignatedInitializer(Desig, Tok.getLocation(),
403 true, ParseInitializer());
404 }
405
406 Diag(Tok, diag::err_expected_equal_designator);
407 return ExprError();
408 }
409
410
411 /// ParseBraceInitializer - Called when parsing an initializer that has a
412 /// leading open brace.
413 ///
414 /// initializer: [C99 6.7.8]
415 /// '{' initializer-list '}'
416 /// '{' initializer-list ',' '}'
417 /// [GNU] '{' '}'
418 ///
419 /// initializer-list:
420 /// designation[opt] initializer ...[opt]
421 /// initializer-list ',' designation[opt] initializer ...[opt]
422 ///
423 ExprResult Parser::ParseBraceInitializer() {
424 InMessageExpressionRAIIObject InMessage(*this, false);
425
426 BalancedDelimiterTracker T(*this, tok::l_brace);
427 T.consumeOpen();
428 SourceLocation LBraceLoc = T.getOpenLocation();
429
430 /// InitExprs - This is the actual list of expressions contained in the
431 /// initializer.
432 ExprVector InitExprs;
433
434 if (Tok.is(tok::r_brace)) {
435 // Empty initializers are a C++ feature and a GNU extension to C.
436 if (!getLangOpts().CPlusPlus)
437 Diag(LBraceLoc, diag::ext_gnu_empty_initializer);
438 // Match the '}'.
439 return Actions.ActOnInitList(LBraceLoc, None, ConsumeBrace());
440 }
441
442 // Enter an appropriate expression evaluation context for an initializer list.
443 EnterExpressionEvaluationContext EnterContext(
444 Actions, EnterExpressionEvaluationContext::InitList);
445
446 bool InitExprsOk = true;
447
448 while (1) {
449 // Handle Microsoft __if_exists/if_not_exists if necessary.
450 if (getLangOpts().MicrosoftExt && (Tok.is(tok::kw___if_exists) ||
451 Tok.is(tok::kw___if_not_exists))) {
452 if (ParseMicrosoftIfExistsBraceInitializer(InitExprs, InitExprsOk)) {
453 if (Tok.isNot(tok::comma)) break;
454 ConsumeToken();
455 }
456 if (Tok.is(tok::r_brace)) break;
457 continue;
458 }
459
460 // Parse: designation[opt] initializer
461
462 // If we know that this cannot be a designation, just parse the nested
463 // initializer directly.
464 ExprResult SubElt;
465 if (MayBeDesignationStart())
466 SubElt = ParseInitializerWithPotentialDesignator();
467 else
468 SubElt = ParseInitializer();
469
470 if (Tok.is(tok::ellipsis))
471 SubElt = Actions.ActOnPackExpansion(SubElt.get(), ConsumeToken());
472
473 SubElt = Actions.CorrectDelayedTyposInExpr(SubElt.get());
474
475 // If we couldn't parse the subelement, bail out.
476 if (SubElt.isUsable()) {
477 InitExprs.push_back(SubElt.get());
478 } else {
479 InitExprsOk = false;
480
481 // We have two ways to try to recover from this error: if the code looks
482 // grammatically ok (i.e. we have a comma coming up) try to continue
483 // parsing the rest of the initializer. This allows us to emit
484 // diagnostics for later elements that we find. If we don't see a comma,
485 // assume there is a parse error, and just skip to recover.
486 // FIXME: This comment doesn't sound right. If there is a r_brace
487 // immediately, it can't be an error, since there is no other way of
488 // leaving this loop except through this if.
489 if (Tok.isNot(tok::comma)) {
490 SkipUntil(tok::r_brace, StopBeforeMatch);
491 break;
492 }
493 }
494
495 // If we don't have a comma continued list, we're done.
496 if (Tok.isNot(tok::comma)) break;
497
498 // TODO: save comma locations if some client cares.
499 ConsumeToken();
500
501 // Handle trailing comma.
502 if (Tok.is(tok::r_brace)) break;
503 }
504
505 bool closed = !T.consumeClose();
506
507 if (InitExprsOk && closed)
508 return Actions.ActOnInitList(LBraceLoc, InitExprs,
509 T.getCloseLocation());
510
511 return ExprError(); // an error occurred.
512 }
513
514
515 // Return true if a comma (or closing brace) is necessary after the
516 // __if_exists/if_not_exists statement.
517 bool Parser::ParseMicrosoftIfExistsBraceInitializer(ExprVector &InitExprs,
518 bool &InitExprsOk) {
519 bool trailingComma = false;
520 IfExistsCondition Result;
521 if (ParseMicrosoftIfExistsCondition(Result))
522 return false;
523
524 BalancedDelimiterTracker Braces(*this, tok::l_brace);
525 if (Braces.consumeOpen()) {
526 Diag(Tok, diag::err_expected) << tok::l_brace;
527 return false;
528 }
529
530 switch (Result.Behavior) {
531 case IEB_Parse:
532 // Parse the declarations below.
533 break;
534
535 case IEB_Dependent:
536 Diag(Result.KeywordLoc, diag::warn_microsoft_dependent_exists)
537 << Result.IsIfExists;
538 // Fall through to skip.
539 LLVM_FALLTHROUGH;
540
541 case IEB_Skip:
542 Braces.skipToEnd();
543 return false;
544 }
545
546 while (!isEofOrEom()) {
547 trailingComma = false;
548 // If we know that this cannot be a designation, just parse the nested
549 // initializer directly.
550 ExprResult SubElt;
551 if (MayBeDesignationStart())
552 SubElt = ParseInitializerWithPotentialDesignator();
553 else
554 SubElt = ParseInitializer();
555
556 if (Tok.is(tok::ellipsis))
557 SubElt = Actions.ActOnPackExpansion(SubElt.get(), ConsumeToken());
558
559 // If we couldn't parse the subelement, bail out.
560 if (!SubElt.isInvalid())
561 InitExprs.push_back(SubElt.get());
562 else
563 InitExprsOk = false;
564
565 if (Tok.is(tok::comma)) {
566 ConsumeToken();
567 trailingComma = true;
568 }
569
570 if (Tok.is(tok::r_brace))
571 break;
572 }
573
574 Braces.consumeClose();
575
576 return !trailingComma;
577 }
Parser.h
clang::Preprocessor::LookAhead
const Token & LookAhead(unsigned N)
Peeks ahead N tokens and returns that token without consuming any tokens.
Definition: Preprocessor.h:1451
clang::Token::is
bool is(tok::TokenKind K) const
is/isNot - Predicates to check if this token is a specific kind, as in "if (Tok.is(tok::l_brace)) {...
Definition: Token.h:97
clang::BalancedDelimiterTracker::consumeClose
bool consumeClose()
Definition: RAIIObjectsForParser.h:446
P
StringRef P
Definition: ASTMatchersInternal.cpp:485
clang::BalancedDelimiterTracker::getCloseLocation
SourceLocation getCloseLocation() const
Definition: RAIIObjectsForParser.h:428
clang::Designator::getField
const IdentifierInfo * getField() const
Definition: Designator.h:73
clang::Designator::isArrayRangeDesignator
bool isArrayRangeDesignator() const
Definition: Designator.h:71
clang::OpaquePtr< QualType >
clang::Parser
Parser - This implements a parser for the C family of languages.
Definition: Parser.h:57
clang::EnterExpressionEvaluationContext
RAII object that enters a new expression evaluation context.
Definition: Sema.h:12029
clang::Scope::isInObjcMethodScope
bool isInObjcMethodScope() const
isInObjcMethodScope - Return true if this scope is, or is contained in, an Objective-C method body...
Definition: Scope.h:356
clang::Token::getKind
tok::TokenKind getKind() const
Definition: Token.h:92
clang::Parser::SkipUntil
bool SkipUntil(tok::TokenKind T, SkipUntilFlags Flags=static_cast< SkipUntilFlags >(0))
SkipUntil - Read tokens until we get to the specified token, then consume it (unless StopBeforeMatch ...
Definition: Parser.h:1118
ParseDiagnostic.h
clang::Parser::NextToken
const Token & NextToken()
NextToken - This peeks ahead one token and returns it without consuming it.
Definition: Parser.h:759
clang::Sema::ObjCClassMessage
The message is a class message, and the identifier is a type name.
Definition: Sema.h:9144
clang::IdentifierInfo
One of these records is kept for each identifier that is lexed.
Definition: IdentifierTable.h:57
clang::BalancedDelimiterTracker::consumeOpen
bool consumeOpen()
Definition: RAIIObjectsForParser.h:431
clang::Sema::ActOnDesignatedInitializer
ExprResult ActOnDesignatedInitializer(Designation &Desig, SourceLocation EqualOrColonLoc, bool GNUSyntax, ExprResult Init)
Definition: SemaInit.cpp:3126
clang::BalancedDelimiterTracker
RAII class that helps handle the parsing of an open/close delimiter pair, such as braces { ...
Definition: RAIIObjectsForParser.h:385
clang::Preprocessor::getLangOpts
const LangOptions & getLangOpts() const
Definition: Preprocessor.h:907
clang::ActionResult::get
PtrTy get() const
Definition: Ownership.h:170
clang::Sema::CorrectDelayedTyposInExpr
ExprResult CorrectDelayedTyposInExpr(Expr *E, VarDecl *InitDecl=nullptr, llvm::function_ref< ExprResult(Expr *)> Filter=[](Expr *E) -> ExprResult { return E;})
Process any TypoExprs in the given Expr and its children, generating diagnostics as appropriate and r...
Definition: SemaExprCXX.cpp:8166
llvm::SmallString
Definition: LLVM.h:34
clang::Designation::getNumDesignators
unsigned getNumDesignators() const
Definition: Designator.h:192
clang::BalancedDelimiterTracker::skipToEnd
void skipToEnd()
Definition: Parser.cpp:2525
Designator.h
clang::CPlusPlus
Definition: LangStandard.h:47
clang::Sema::ObjCInstanceMessage
The message is an instance message.
Definition: Sema.h:9141
clang::Designator::isArrayDesignator
bool isArrayDesignator() const
Definition: Designator.h:70
clang::Token::getLocation
SourceLocation getLocation() const
Return a source location identifier for the specified offset in the current file. ...
Definition: Token.h:126
Scope.h
clang::Sema::getObjCMessageKind
ObjCMessageKind getObjCMessageKind(Scope *S, IdentifierInfo *Name, SourceLocation NameLoc, bool IsSuper, bool HasTrailingDot, ParsedType &ReceiverType)
Definition: SemaExprObjC.cpp:2157
clang::ActionResult::isInvalid
bool isInvalid() const
Definition: Ownership.h:166
clang::BalancedDelimiterTracker::getOpenLocation
SourceLocation getOpenLocation() const
Definition: RAIIObjectsForParser.h:427
clang::Designation::empty
bool empty() const
Definition: Designator.h:190
clang::ActionResult::isUsable
bool isUsable() const
Definition: Ownership.h:167
clang::ObjCSubstitutionContext::Result
The result type of a method or function.
clang::Sema::ActOnPackExpansion
ParsedTemplateArgument ActOnPackExpansion(const ParsedTemplateArgument &Arg, SourceLocation EllipsisLoc)
Invoked when parsing a template argument followed by an ellipsis, which creates a pack expansion...
Definition: SemaTemplateVariadic.cpp:529
clang::Parser::getLangOpts
const LangOptions & getLangOpts() const
Definition: Parser.h:407
clang::Designation::getDesignator
const Designator & getDesignator(unsigned Idx) const
Definition: Designator.h:193
clang::Parser::StopAtSemi
Stop skipping at semicolon.
Definition: Parser.h:1098
clang::ActionResult
ActionResult - This structure is used while parsing/acting on expressions, stmts, etc...
Definition: Ownership.h:153
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:86
clang::Token::getIdentifierInfo
IdentifierInfo * getIdentifierInfo() const
Definition: Token.h:179
clang::Sema::ObjCSuperMessage
The message is sent to &#39;super&#39;.
Definition: Sema.h:9139
clang::Sema::ActOnInitList
ExprResult ActOnInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, SourceLocation RBraceLoc)
Definition: SemaExpr.cpp:6272
clang::Parser::getCurScope
Scope * getCurScope() const
Definition: Parser.h:414
clang::MultiVersionKind::None
clang::IdentifierInfo::getName
StringRef getName() const
Return the actual identifier string.
Definition: IdentifierTable.h:155
clang::Token::isNot
bool isNot(tok::TokenKind K) const
Definition: Token.h:98
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
RAIIObjectsForParser.h
clang::Parser::Diag
DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID)
Definition: Parser.cpp:72
CheckArrayDesignatorSyntax
static void CheckArrayDesignatorSyntax(Parser &P, SourceLocation Loc, Designation &Desig)
Definition: ParseInit.cpp:103
clang::Parser::ParseAssignmentExpression
ExprResult ParseAssignmentExpression(TypeCastState isTypeCast=NotTypeCast)
Parse an expr that doesn&#39;t include (top-level) commas.
Definition: ParseExpr.cpp:160
clang::FixItHint::CreateInsertion
static FixItHint CreateInsertion(SourceLocation InsertionLoc, StringRef Code, bool BeforePreviousInsertions=false)
Create a code modification hint that inserts the given code string at a specific location.
Definition: Diagnostic.h:92
clang::EnterExpressionEvaluationContext::InitList
Definition: Sema.h:12055
clang::InMessageExpressionRAIIObject
Definition: RAIIObjectsForParser.h:325
clang::Parser::ParseConstantExpression
ExprResult ParseConstantExpression(TypeCastState isTypeCast=NotTypeCast)
Definition: ParseExpr.cpp:211
clang::Designation::AddDesignator
void AddDesignator(Designator D)
AddDesignator - Add a designator to the end of this list.
Definition: Designator.h:186
clang::ExprResult
ActionResult< Expr * > ExprResult
Definition: Ownership.h:263
clang::Parser::ConsumeToken
SourceLocation ConsumeToken()
ConsumeToken - Consume the current &#39;peek token&#39; and lex the next one.
Definition: Parser.h:452
clang::FixItHint::CreateReplacement
static FixItHint CreateReplacement(CharSourceRange RemoveRange, StringRef Code)
Create a code modification hint that replaces the given source range with the given code string...
Definition: Diagnostic.h:129
clang::LambdaIntroducer
Represents a complete lambda introducer.
Definition: DeclSpec.h:2636
clang::ExprError
ExprResult ExprError()
Definition: Ownership.h:279
clang::Language::ObjC
clang::Designation
Designation - Represent a full designation, which is a sequence of designators.
Definition: Designator.h:180
clang::Designator::getArray
static Designator getArray(Expr *Index, SourceLocation LBracketLoc)
Definition: Designator.h:135
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:207
clang::Designator::getArrayRange
static Designator getArrayRange(Expr *Start, Expr *End, SourceLocation LBracketLoc, SourceLocation EllipsisLoc)
Definition: Designator.h:145
clang::OpaquePtr< QualType >::getFromOpaquePtr
static OpaquePtr getFromOpaquePtr(void *P)
Definition: Ownership.h:91
ColonLoc
SourceLocation ColonLoc
Location of &#39;:&#39;.
Definition: OpenMPClause.h:107
clang::Parser::StopBeforeMatch
Stop skipping at specified token, but don&#39;t skip the token itself.
Definition: Parser.h:1100