/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Parse/Parser.h
Line | Count | Source (jump to first uncovered line) |
1 | | //===--- Parser.h - C Language Parser ---------------------------*- 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 defines the Parser interface. |
10 | | // |
11 | | //===----------------------------------------------------------------------===// |
12 | | |
13 | | #ifndef LLVM_CLANG_PARSE_PARSER_H |
14 | | #define LLVM_CLANG_PARSE_PARSER_H |
15 | | |
16 | | #include "clang/AST/Availability.h" |
17 | | #include "clang/Basic/BitmaskEnum.h" |
18 | | #include "clang/Basic/OpenMPKinds.h" |
19 | | #include "clang/Basic/OperatorPrecedence.h" |
20 | | #include "clang/Basic/Specifiers.h" |
21 | | #include "clang/Lex/CodeCompletionHandler.h" |
22 | | #include "clang/Lex/Preprocessor.h" |
23 | | #include "clang/Sema/DeclSpec.h" |
24 | | #include "clang/Sema/Sema.h" |
25 | | #include "llvm/ADT/SmallVector.h" |
26 | | #include "llvm/Frontend/OpenMP/OMPContext.h" |
27 | | #include "llvm/Support/Compiler.h" |
28 | | #include "llvm/Support/PrettyStackTrace.h" |
29 | | #include "llvm/Support/SaveAndRestore.h" |
30 | | #include <memory> |
31 | | #include <stack> |
32 | | |
33 | | namespace clang { |
34 | | class PragmaHandler; |
35 | | class Scope; |
36 | | class BalancedDelimiterTracker; |
37 | | class CorrectionCandidateCallback; |
38 | | class DeclGroupRef; |
39 | | class DiagnosticBuilder; |
40 | | struct LoopHint; |
41 | | class Parser; |
42 | | class ParsingDeclRAIIObject; |
43 | | class ParsingDeclSpec; |
44 | | class ParsingDeclarator; |
45 | | class ParsingFieldDeclarator; |
46 | | class ColonProtectionRAIIObject; |
47 | | class InMessageExpressionRAIIObject; |
48 | | class PoisonSEHIdentifiersRAIIObject; |
49 | | class OMPClause; |
50 | | class ObjCTypeParamList; |
51 | | struct OMPTraitProperty; |
52 | | struct OMPTraitSelector; |
53 | | struct OMPTraitSet; |
54 | | class OMPTraitInfo; |
55 | | |
56 | | /// Parser - This implements a parser for the C family of languages. After |
57 | | /// parsing units of the grammar, productions are invoked to handle whatever has |
58 | | /// been read. |
59 | | /// |
60 | | class Parser : public CodeCompletionHandler { |
61 | | friend class ColonProtectionRAIIObject; |
62 | | friend class ParsingOpenMPDirectiveRAII; |
63 | | friend class InMessageExpressionRAIIObject; |
64 | | friend class PoisonSEHIdentifiersRAIIObject; |
65 | | friend class ObjCDeclContextSwitch; |
66 | | friend class ParenBraceBracketBalancer; |
67 | | friend class BalancedDelimiterTracker; |
68 | | |
69 | | Preprocessor &PP; |
70 | | |
71 | | /// Tok - The current token we are peeking ahead. All parsing methods assume |
72 | | /// that this is valid. |
73 | | Token Tok; |
74 | | |
75 | | // PrevTokLocation - The location of the token we previously |
76 | | // consumed. This token is used for diagnostics where we expected to |
77 | | // see a token following another token (e.g., the ';' at the end of |
78 | | // a statement). |
79 | | SourceLocation PrevTokLocation; |
80 | | |
81 | | /// Tracks an expected type for the current token when parsing an expression. |
82 | | /// Used by code completion for ranking. |
83 | | PreferredTypeBuilder PreferredType; |
84 | | |
85 | | unsigned short ParenCount = 0, BracketCount = 0, BraceCount = 0; |
86 | | unsigned short MisplacedModuleBeginCount = 0; |
87 | | |
88 | | /// Actions - These are the callbacks we invoke as we parse various constructs |
89 | | /// in the file. |
90 | | Sema &Actions; |
91 | | |
92 | | DiagnosticsEngine &Diags; |
93 | | |
94 | | /// ScopeCache - Cache scopes to reduce malloc traffic. |
95 | | enum { ScopeCacheSize = 16 }; |
96 | | unsigned NumCachedScopes; |
97 | | Scope *ScopeCache[ScopeCacheSize]; |
98 | | |
99 | | /// Identifiers used for SEH handling in Borland. These are only |
100 | | /// allowed in particular circumstances |
101 | | // __except block |
102 | | IdentifierInfo *Ident__exception_code, |
103 | | *Ident___exception_code, |
104 | | *Ident_GetExceptionCode; |
105 | | // __except filter expression |
106 | | IdentifierInfo *Ident__exception_info, |
107 | | *Ident___exception_info, |
108 | | *Ident_GetExceptionInfo; |
109 | | // __finally |
110 | | IdentifierInfo *Ident__abnormal_termination, |
111 | | *Ident___abnormal_termination, |
112 | | *Ident_AbnormalTermination; |
113 | | |
114 | | /// Contextual keywords for Microsoft extensions. |
115 | | IdentifierInfo *Ident__except; |
116 | | mutable IdentifierInfo *Ident_sealed; |
117 | | mutable IdentifierInfo *Ident_abstract; |
118 | | |
119 | | /// Ident_super - IdentifierInfo for "super", to support fast |
120 | | /// comparison. |
121 | | IdentifierInfo *Ident_super; |
122 | | /// Ident_vector, Ident_bool, Ident_Bool - cached IdentifierInfos for "vector" |
123 | | /// and "bool" fast comparison. Only present if AltiVec or ZVector are |
124 | | /// enabled. |
125 | | IdentifierInfo *Ident_vector; |
126 | | IdentifierInfo *Ident_bool; |
127 | | IdentifierInfo *Ident_Bool; |
128 | | /// Ident_pixel - cached IdentifierInfos for "pixel" fast comparison. |
129 | | /// Only present if AltiVec enabled. |
130 | | IdentifierInfo *Ident_pixel; |
131 | | |
132 | | /// Objective-C contextual keywords. |
133 | | IdentifierInfo *Ident_instancetype; |
134 | | |
135 | | /// Identifier for "introduced". |
136 | | IdentifierInfo *Ident_introduced; |
137 | | |
138 | | /// Identifier for "deprecated". |
139 | | IdentifierInfo *Ident_deprecated; |
140 | | |
141 | | /// Identifier for "obsoleted". |
142 | | IdentifierInfo *Ident_obsoleted; |
143 | | |
144 | | /// Identifier for "unavailable". |
145 | | IdentifierInfo *Ident_unavailable; |
146 | | |
147 | | /// Identifier for "message". |
148 | | IdentifierInfo *Ident_message; |
149 | | |
150 | | /// Identifier for "strict". |
151 | | IdentifierInfo *Ident_strict; |
152 | | |
153 | | /// Identifier for "replacement". |
154 | | IdentifierInfo *Ident_replacement; |
155 | | |
156 | | /// Identifiers used by the 'external_source_symbol' attribute. |
157 | | IdentifierInfo *Ident_language, *Ident_defined_in, |
158 | | *Ident_generated_declaration; |
159 | | |
160 | | /// C++11 contextual keywords. |
161 | | mutable IdentifierInfo *Ident_final; |
162 | | mutable IdentifierInfo *Ident_GNU_final; |
163 | | mutable IdentifierInfo *Ident_override; |
164 | | |
165 | | // C++2a contextual keywords. |
166 | | mutable IdentifierInfo *Ident_import; |
167 | | mutable IdentifierInfo *Ident_module; |
168 | | |
169 | | // C++ type trait keywords that can be reverted to identifiers and still be |
170 | | // used as type traits. |
171 | | llvm::SmallDenseMap<IdentifierInfo *, tok::TokenKind> RevertibleTypeTraits; |
172 | | |
173 | | std::unique_ptr<PragmaHandler> AlignHandler; |
174 | | std::unique_ptr<PragmaHandler> GCCVisibilityHandler; |
175 | | std::unique_ptr<PragmaHandler> OptionsHandler; |
176 | | std::unique_ptr<PragmaHandler> PackHandler; |
177 | | std::unique_ptr<PragmaHandler> MSStructHandler; |
178 | | std::unique_ptr<PragmaHandler> UnusedHandler; |
179 | | std::unique_ptr<PragmaHandler> WeakHandler; |
180 | | std::unique_ptr<PragmaHandler> RedefineExtnameHandler; |
181 | | std::unique_ptr<PragmaHandler> FPContractHandler; |
182 | | std::unique_ptr<PragmaHandler> OpenCLExtensionHandler; |
183 | | std::unique_ptr<PragmaHandler> OpenMPHandler; |
184 | | std::unique_ptr<PragmaHandler> PCSectionHandler; |
185 | | std::unique_ptr<PragmaHandler> MSCommentHandler; |
186 | | std::unique_ptr<PragmaHandler> MSDetectMismatchHandler; |
187 | | std::unique_ptr<PragmaHandler> FPEvalMethodHandler; |
188 | | std::unique_ptr<PragmaHandler> FloatControlHandler; |
189 | | std::unique_ptr<PragmaHandler> MSPointersToMembers; |
190 | | std::unique_ptr<PragmaHandler> MSVtorDisp; |
191 | | std::unique_ptr<PragmaHandler> MSInitSeg; |
192 | | std::unique_ptr<PragmaHandler> MSDataSeg; |
193 | | std::unique_ptr<PragmaHandler> MSBSSSeg; |
194 | | std::unique_ptr<PragmaHandler> MSConstSeg; |
195 | | std::unique_ptr<PragmaHandler> MSCodeSeg; |
196 | | std::unique_ptr<PragmaHandler> MSSection; |
197 | | std::unique_ptr<PragmaHandler> MSRuntimeChecks; |
198 | | std::unique_ptr<PragmaHandler> MSIntrinsic; |
199 | | std::unique_ptr<PragmaHandler> MSFunction; |
200 | | std::unique_ptr<PragmaHandler> MSOptimize; |
201 | | std::unique_ptr<PragmaHandler> MSFenvAccess; |
202 | | std::unique_ptr<PragmaHandler> MSAllocText; |
203 | | std::unique_ptr<PragmaHandler> CUDAForceHostDeviceHandler; |
204 | | std::unique_ptr<PragmaHandler> OptimizeHandler; |
205 | | std::unique_ptr<PragmaHandler> LoopHintHandler; |
206 | | std::unique_ptr<PragmaHandler> UnrollHintHandler; |
207 | | std::unique_ptr<PragmaHandler> NoUnrollHintHandler; |
208 | | std::unique_ptr<PragmaHandler> UnrollAndJamHintHandler; |
209 | | std::unique_ptr<PragmaHandler> NoUnrollAndJamHintHandler; |
210 | | std::unique_ptr<PragmaHandler> FPHandler; |
211 | | std::unique_ptr<PragmaHandler> STDCFenvAccessHandler; |
212 | | std::unique_ptr<PragmaHandler> STDCFenvRoundHandler; |
213 | | std::unique_ptr<PragmaHandler> STDCCXLIMITHandler; |
214 | | std::unique_ptr<PragmaHandler> STDCUnknownHandler; |
215 | | std::unique_ptr<PragmaHandler> AttributePragmaHandler; |
216 | | std::unique_ptr<PragmaHandler> MaxTokensHerePragmaHandler; |
217 | | std::unique_ptr<PragmaHandler> MaxTokensTotalPragmaHandler; |
218 | | |
219 | | std::unique_ptr<CommentHandler> CommentSemaHandler; |
220 | | |
221 | | /// Whether the '>' token acts as an operator or not. This will be |
222 | | /// true except when we are parsing an expression within a C++ |
223 | | /// template argument list, where the '>' closes the template |
224 | | /// argument list. |
225 | | bool GreaterThanIsOperator; |
226 | | |
227 | | /// ColonIsSacred - When this is false, we aggressively try to recover from |
228 | | /// code like "foo : bar" as if it were a typo for "foo :: bar". This is not |
229 | | /// safe in case statements and a few other things. This is managed by the |
230 | | /// ColonProtectionRAIIObject RAII object. |
231 | | bool ColonIsSacred; |
232 | | |
233 | | /// Parsing OpenMP directive mode. |
234 | | bool OpenMPDirectiveParsing = false; |
235 | | |
236 | | /// When true, we are directly inside an Objective-C message |
237 | | /// send expression. |
238 | | /// |
239 | | /// This is managed by the \c InMessageExpressionRAIIObject class, and |
240 | | /// should not be set directly. |
241 | | bool InMessageExpression; |
242 | | |
243 | | /// Gets set to true after calling ProduceSignatureHelp, it is for a |
244 | | /// workaround to make sure ProduceSignatureHelp is only called at the deepest |
245 | | /// function call. |
246 | | bool CalledSignatureHelp = false; |
247 | | |
248 | | /// The "depth" of the template parameters currently being parsed. |
249 | | unsigned TemplateParameterDepth; |
250 | | |
251 | | /// Current kind of OpenMP clause |
252 | | OpenMPClauseKind OMPClauseKind = llvm::omp::OMPC_unknown; |
253 | | |
254 | | /// RAII class that manages the template parameter depth. |
255 | | class TemplateParameterDepthRAII { |
256 | | unsigned &Depth; |
257 | | unsigned AddedLevels; |
258 | | public: |
259 | | explicit TemplateParameterDepthRAII(unsigned &Depth) |
260 | 9.33M | : Depth(Depth), AddedLevels(0) {} |
261 | | |
262 | 9.33M | ~TemplateParameterDepthRAII() { |
263 | 9.33M | Depth -= AddedLevels; |
264 | 9.33M | } |
265 | | |
266 | 1.53M | void operator++() { |
267 | 1.53M | ++Depth; |
268 | 1.53M | ++AddedLevels; |
269 | 1.53M | } |
270 | 1.03M | void addDepth(unsigned D) { |
271 | 1.03M | Depth += D; |
272 | 1.03M | AddedLevels += D; |
273 | 1.03M | } |
274 | 2.28k | void setAddedDepth(unsigned D) { |
275 | 2.28k | Depth = Depth - AddedLevels + D; |
276 | 2.28k | AddedLevels = D; |
277 | 2.28k | } |
278 | | |
279 | 3.22M | unsigned getDepth() const { return Depth; } |
280 | 3.84k | unsigned getOriginalDepth() const { return Depth - AddedLevels; } |
281 | | }; |
282 | | |
283 | | /// Factory object for creating ParsedAttr objects. |
284 | | AttributeFactory AttrFactory; |
285 | | |
286 | | /// Gathers and cleans up TemplateIdAnnotations when parsing of a |
287 | | /// top-level declaration is finished. |
288 | | SmallVector<TemplateIdAnnotation *, 16> TemplateIds; |
289 | | |
290 | 59.6M | void MaybeDestroyTemplateIds() { |
291 | 59.6M | if (!TemplateIds.empty() && |
292 | 59.6M | (2.87M Tok.is(tok::eof)2.87M || !PP.mightHavePendingAnnotationTokens()2.86M )) |
293 | 1.72M | DestroyTemplateIds(); |
294 | 59.6M | } |
295 | | void DestroyTemplateIds(); |
296 | | |
297 | | /// RAII object to destroy TemplateIdAnnotations where possible, from a |
298 | | /// likely-good position during parsing. |
299 | | struct DestroyTemplateIdAnnotationsRAIIObj { |
300 | | Parser &Self; |
301 | | |
302 | 47.2M | DestroyTemplateIdAnnotationsRAIIObj(Parser &Self) : Self(Self) {} |
303 | 47.2M | ~DestroyTemplateIdAnnotationsRAIIObj() { Self.MaybeDestroyTemplateIds(); } |
304 | | }; |
305 | | |
306 | | /// Identifiers which have been declared within a tentative parse. |
307 | | SmallVector<IdentifierInfo *, 8> TentativelyDeclaredIdentifiers; |
308 | | |
309 | | /// Tracker for '<' tokens that might have been intended to be treated as an |
310 | | /// angle bracket instead of a less-than comparison. |
311 | | /// |
312 | | /// This happens when the user intends to form a template-id, but typoes the |
313 | | /// template-name or forgets a 'template' keyword for a dependent template |
314 | | /// name. |
315 | | /// |
316 | | /// We track these locations from the point where we see a '<' with a |
317 | | /// name-like expression on its left until we see a '>' or '>>' that might |
318 | | /// match it. |
319 | | struct AngleBracketTracker { |
320 | | /// Flags used to rank candidate template names when there is more than one |
321 | | /// '<' in a scope. |
322 | | enum Priority : unsigned short { |
323 | | /// A non-dependent name that is a potential typo for a template name. |
324 | | PotentialTypo = 0x0, |
325 | | /// A dependent name that might instantiate to a template-name. |
326 | | DependentName = 0x2, |
327 | | |
328 | | /// A space appears before the '<' token. |
329 | | SpaceBeforeLess = 0x0, |
330 | | /// No space before the '<' token |
331 | | NoSpaceBeforeLess = 0x1, |
332 | | |
333 | | LLVM_MARK_AS_BITMASK_ENUM(/*LargestValue*/ DependentName) |
334 | | }; |
335 | | |
336 | | struct Loc { |
337 | | Expr *TemplateName; |
338 | | SourceLocation LessLoc; |
339 | | AngleBracketTracker::Priority Priority; |
340 | | unsigned short ParenCount, BracketCount, BraceCount; |
341 | | |
342 | 223k | bool isActive(Parser &P) const { |
343 | 223k | return P.ParenCount == ParenCount && P.BracketCount == BracketCount208k && |
344 | 223k | P.BraceCount == BraceCount208k ; |
345 | 223k | } |
346 | | |
347 | 220k | bool isActiveOrNested(Parser &P) const { |
348 | 220k | return isActive(P) || P.ParenCount > ParenCount13.2k || |
349 | 220k | P.BracketCount > BracketCount101 || P.BraceCount > BraceCount25 ; |
350 | 220k | } |
351 | | }; |
352 | | |
353 | | SmallVector<Loc, 8> Locs; |
354 | | |
355 | | /// Add an expression that might have been intended to be a template name. |
356 | | /// In the case of ambiguity, we arbitrarily select the innermost such |
357 | | /// expression, for example in 'foo < bar < baz', 'bar' is the current |
358 | | /// candidate. No attempt is made to track that 'foo' is also a candidate |
359 | | /// for the case where we see a second suspicious '>' token. |
360 | | void add(Parser &P, Expr *TemplateName, SourceLocation LessLoc, |
361 | 221k | Priority Prio) { |
362 | 221k | if (!Locs.empty() && Locs.back().isActive(P)1.72k ) { |
363 | 810 | if (Locs.back().Priority <= Prio) { |
364 | 806 | Locs.back().TemplateName = TemplateName; |
365 | 806 | Locs.back().LessLoc = LessLoc; |
366 | 806 | Locs.back().Priority = Prio; |
367 | 806 | } |
368 | 220k | } else { |
369 | 220k | Locs.push_back({TemplateName, LessLoc, Prio, |
370 | 220k | P.ParenCount, P.BracketCount, P.BraceCount}); |
371 | 220k | } |
372 | 221k | } |
373 | | |
374 | | /// Mark the current potential missing template location as having been |
375 | | /// handled (this happens if we pass a "corresponding" '>' or '>>' token |
376 | | /// or leave a bracket scope). |
377 | 229M | void clear(Parser &P) { |
378 | 229M | while (!Locs.empty() && Locs.back().isActiveOrNested(P)220k ) |
379 | 220k | Locs.pop_back(); |
380 | 229M | } |
381 | | |
382 | | /// Get the current enclosing expression that might hve been intended to be |
383 | | /// a template name. |
384 | 6.13M | Loc *getCurrent(Parser &P) { |
385 | 6.13M | if (!Locs.empty() && Locs.back().isActive(P)835 ) |
386 | 81 | return &Locs.back(); |
387 | 6.13M | return nullptr; |
388 | 6.13M | } |
389 | | }; |
390 | | |
391 | | AngleBracketTracker AngleBrackets; |
392 | | |
393 | | IdentifierInfo *getSEHExceptKeyword(); |
394 | | |
395 | | /// True if we are within an Objective-C container while parsing C-like decls. |
396 | | /// |
397 | | /// This is necessary because Sema thinks we have left the container |
398 | | /// to parse the C-like decls, meaning Actions.getObjCDeclContext() will |
399 | | /// be NULL. |
400 | | bool ParsingInObjCContainer; |
401 | | |
402 | | /// Whether to skip parsing of function bodies. |
403 | | /// |
404 | | /// This option can be used, for example, to speed up searches for |
405 | | /// declarations/definitions when indexing. |
406 | | bool SkipFunctionBodies; |
407 | | |
408 | | /// The location of the expression statement that is being parsed right now. |
409 | | /// Used to determine if an expression that is being parsed is a statement or |
410 | | /// just a regular sub-expression. |
411 | | SourceLocation ExprStatementTokLoc; |
412 | | |
413 | | /// Flags describing a context in which we're parsing a statement. |
414 | | enum class ParsedStmtContext { |
415 | | /// This context permits declarations in language modes where declarations |
416 | | /// are not statements. |
417 | | AllowDeclarationsInC = 0x1, |
418 | | /// This context permits standalone OpenMP directives. |
419 | | AllowStandaloneOpenMPDirectives = 0x2, |
420 | | /// This context is at the top level of a GNU statement expression. |
421 | | InStmtExpr = 0x4, |
422 | | |
423 | | /// The context of a regular substatement. |
424 | | SubStmt = 0, |
425 | | /// The context of a compound-statement. |
426 | | Compound = AllowDeclarationsInC | AllowStandaloneOpenMPDirectives, |
427 | | |
428 | | LLVM_MARK_AS_BITMASK_ENUM(InStmtExpr) |
429 | | }; |
430 | | |
431 | | /// Act on an expression statement that might be the last statement in a |
432 | | /// GNU statement expression. Checks whether we are actually at the end of |
433 | | /// a statement expression and builds a suitable expression statement. |
434 | | StmtResult handleExprStmt(ExprResult E, ParsedStmtContext StmtCtx); |
435 | | |
436 | | public: |
437 | | Parser(Preprocessor &PP, Sema &Actions, bool SkipFunctionBodies); |
438 | | ~Parser() override; |
439 | | |
440 | 2.64G | const LangOptions &getLangOpts() const { return PP.getLangOpts(); } |
441 | 155k | const TargetInfo &getTargetInfo() const { return PP.getTargetInfo(); } |
442 | 3.69M | Preprocessor &getPreprocessor() const { return PP; } |
443 | 117M | Sema &getActions() const { return Actions; } |
444 | 34.7M | AttributeFactory &getAttrFactory() { return AttrFactory; } |
445 | | |
446 | 3.48M | const Token &getCurToken() const { return Tok; } |
447 | 579M | Scope *getCurScope() const { return Actions.getCurScope(); } |
448 | 451k | void incrementMSManglingNumber() const { |
449 | 451k | return Actions.incrementMSManglingNumber(); |
450 | 451k | } |
451 | | |
452 | 33.9M | ObjCContainerDecl *getObjCDeclContext() const { |
453 | 33.9M | return Actions.getObjCDeclContext(); |
454 | 33.9M | } |
455 | | |
456 | | // Type forwarding. All of these are statically 'void*', but they may all be |
457 | | // different actual classes based on the actions in place. |
458 | | typedef OpaquePtr<DeclGroupRef> DeclGroupPtrTy; |
459 | | typedef OpaquePtr<TemplateName> TemplateTy; |
460 | | |
461 | | typedef SmallVector<TemplateParameterList *, 4> TemplateParameterLists; |
462 | | |
463 | | typedef Sema::FullExprArg FullExprArg; |
464 | | |
465 | | // Parsing methods. |
466 | | |
467 | | /// Initialize - Warm up the parser. |
468 | | /// |
469 | | void Initialize(); |
470 | | |
471 | | /// Parse the first top-level declaration in a translation unit. |
472 | | bool ParseFirstTopLevelDecl(DeclGroupPtrTy &Result, |
473 | | Sema::ModuleImportState &ImportState); |
474 | | |
475 | | /// ParseTopLevelDecl - Parse one top-level declaration. Returns true if |
476 | | /// the EOF was encountered. |
477 | | bool ParseTopLevelDecl(DeclGroupPtrTy &Result, |
478 | | Sema::ModuleImportState &ImportState); |
479 | 73.7k | bool ParseTopLevelDecl() { |
480 | 73.7k | DeclGroupPtrTy Result; |
481 | 73.7k | Sema::ModuleImportState IS = Sema::ModuleImportState::NotACXX20Module; |
482 | 73.7k | return ParseTopLevelDecl(Result, IS); |
483 | 73.7k | } |
484 | | |
485 | | /// ConsumeToken - Consume the current 'peek token' and lex the next one. |
486 | | /// This does not work with special tokens: string literals, code completion, |
487 | | /// annotation tokens and balanced tokens must be handled using the specific |
488 | | /// consume methods. |
489 | | /// Returns the location of the consumed token. |
490 | 471M | SourceLocation ConsumeToken() { |
491 | 471M | assert(!isTokenSpecial() && |
492 | 471M | "Should consume special tokens with Consume*Token"); |
493 | 0 | PrevTokLocation = Tok.getLocation(); |
494 | 471M | PP.Lex(Tok); |
495 | 471M | return PrevTokLocation; |
496 | 471M | } |
497 | | |
498 | 426M | bool TryConsumeToken(tok::TokenKind Expected) { |
499 | 426M | if (Tok.isNot(Expected)) |
500 | 304M | return false; |
501 | 121M | assert(!isTokenSpecial() && |
502 | 121M | "Should consume special tokens with Consume*Token"); |
503 | 0 | PrevTokLocation = Tok.getLocation(); |
504 | 121M | PP.Lex(Tok); |
505 | 121M | return true; |
506 | 426M | } |
507 | | |
508 | 190M | bool TryConsumeToken(tok::TokenKind Expected, SourceLocation &Loc) { |
509 | 190M | if (!TryConsumeToken(Expected)) |
510 | 177M | return false; |
511 | 13.3M | Loc = PrevTokLocation; |
512 | 13.3M | return true; |
513 | 190M | } |
514 | | |
515 | | /// ConsumeAnyToken - Dispatch to the right Consume* method based on the |
516 | | /// current token type. This should only be used in cases where the type of |
517 | | /// the token really isn't known, e.g. in error recovery. |
518 | 308M | SourceLocation ConsumeAnyToken(bool ConsumeCodeCompletionTok = false) { |
519 | 308M | if (isTokenParen()) |
520 | 222M | return ConsumeParen(); |
521 | 86.0M | if (isTokenBracket()) |
522 | 76.6k | return ConsumeBracket(); |
523 | 86.0M | if (isTokenBrace()) |
524 | 949k | return ConsumeBrace(); |
525 | 85.0M | if (isTokenStringLiteral()) |
526 | 42.4k | return ConsumeStringToken(); |
527 | 85.0M | if (Tok.is(tok::code_completion)) |
528 | 131 | return ConsumeCodeCompletionTok ? ConsumeCodeCompletionToken() |
529 | 131 | : handleUnexpectedCodeCompletionToken()0 ; |
530 | 85.0M | if (Tok.isAnnotation()) |
531 | 182k | return ConsumeAnnotationToken(); |
532 | 84.8M | return ConsumeToken(); |
533 | 85.0M | } |
534 | | |
535 | | |
536 | 92 | SourceLocation getEndOfPreviousToken() { |
537 | 92 | return PP.getLocForEndOfToken(PrevTokLocation); |
538 | 92 | } |
539 | | |
540 | | /// Retrieve the underscored keyword (_Nonnull, _Nullable) that corresponds |
541 | | /// to the given nullability kind. |
542 | 353k | IdentifierInfo *getNullabilityKeyword(NullabilityKind nullability) { |
543 | 353k | return Actions.getNullabilityKeyword(nullability); |
544 | 353k | } |
545 | | |
546 | | private: |
547 | | //===--------------------------------------------------------------------===// |
548 | | // Low-Level token peeking and consumption methods. |
549 | | // |
550 | | |
551 | | /// isTokenParen - Return true if the cur token is '(' or ')'. |
552 | 1.25G | bool isTokenParen() const { |
553 | 1.25G | return Tok.isOneOf(tok::l_paren, tok::r_paren); |
554 | 1.25G | } |
555 | | /// isTokenBracket - Return true if the cur token is '[' or ']'. |
556 | 681M | bool isTokenBracket() const { |
557 | 681M | return Tok.isOneOf(tok::l_square, tok::r_square); |
558 | 681M | } |
559 | | /// isTokenBrace - Return true if the cur token is '{' or '}'. |
560 | 694M | bool isTokenBrace() const { |
561 | 694M | return Tok.isOneOf(tok::l_brace, tok::r_brace); |
562 | 694M | } |
563 | | /// isTokenStringLiteral - True if this token is a string-literal. |
564 | 705M | bool isTokenStringLiteral() const { |
565 | 705M | return tok::isStringLiteral(Tok.getKind()); |
566 | 705M | } |
567 | | /// isTokenSpecial - True if this token requires special consumption methods. |
568 | 593M | bool isTokenSpecial() const { |
569 | 593M | return isTokenStringLiteral()593M || isTokenParen() || isTokenBracket() || |
570 | 593M | isTokenBrace() || Tok.is(tok::code_completion) || Tok.isAnnotation(); |
571 | 593M | } |
572 | | |
573 | | /// Returns true if the current token is '=' or is a type of '='. |
574 | | /// For typos, give a fixit to '=' |
575 | | bool isTokenEqualOrEqualTypo(); |
576 | | |
577 | | /// Return the current token to the token stream and make the given |
578 | | /// token the current token. |
579 | 17 | void UnconsumeToken(Token &Consumed) { |
580 | 17 | Token Next = Tok; |
581 | 17 | PP.EnterToken(Consumed, /*IsReinject*/true); |
582 | 17 | PP.Lex(Tok); |
583 | 17 | PP.EnterToken(Next, /*IsReinject*/true); |
584 | 17 | } |
585 | | |
586 | 45.7M | SourceLocation ConsumeAnnotationToken() { |
587 | 45.7M | assert(Tok.isAnnotation() && "wrong consume method"); |
588 | 0 | SourceLocation Loc = Tok.getLocation(); |
589 | 45.7M | PrevTokLocation = Tok.getAnnotationEndLoc(); |
590 | 45.7M | PP.Lex(Tok); |
591 | 45.7M | return Loc; |
592 | 45.7M | } |
593 | | |
594 | | /// ConsumeParen - This consume method keeps the paren count up-to-date. |
595 | | /// |
596 | 353M | SourceLocation ConsumeParen() { |
597 | 353M | assert(isTokenParen() && "wrong consume method"); |
598 | 353M | if (Tok.getKind() == tok::l_paren) |
599 | 181M | ++ParenCount; |
600 | 171M | else if (ParenCount) { |
601 | 171M | AngleBrackets.clear(*this); |
602 | 171M | --ParenCount; // Don't let unbalanced )'s drive the count negative. |
603 | 171M | } |
604 | 353M | PrevTokLocation = Tok.getLocation(); |
605 | 353M | PP.Lex(Tok); |
606 | 353M | return PrevTokLocation; |
607 | 353M | } |
608 | | |
609 | | /// ConsumeBracket - This consume method keeps the bracket count up-to-date. |
610 | | /// |
611 | 1.54M | SourceLocation ConsumeBracket() { |
612 | 1.54M | assert(isTokenBracket() && "wrong consume method"); |
613 | 1.54M | if (Tok.getKind() == tok::l_square) |
614 | 774k | ++BracketCount; |
615 | 773k | else if (BracketCount) { |
616 | 772k | AngleBrackets.clear(*this); |
617 | 772k | --BracketCount; // Don't let unbalanced ]'s drive the count negative. |
618 | 772k | } |
619 | | |
620 | 1.54M | PrevTokLocation = Tok.getLocation(); |
621 | 1.54M | PP.Lex(Tok); |
622 | 1.54M | return PrevTokLocation; |
623 | 1.54M | } |
624 | | |
625 | | /// ConsumeBrace - This consume method keeps the brace count up-to-date. |
626 | | /// |
627 | 15.3M | SourceLocation ConsumeBrace() { |
628 | 15.3M | assert(isTokenBrace() && "wrong consume method"); |
629 | 15.3M | if (Tok.getKind() == tok::l_brace) |
630 | 7.67M | ++BraceCount; |
631 | 7.66M | else if (BraceCount) { |
632 | 7.66M | AngleBrackets.clear(*this); |
633 | 7.66M | --BraceCount; // Don't let unbalanced }'s drive the count negative. |
634 | 7.66M | } |
635 | | |
636 | 15.3M | PrevTokLocation = Tok.getLocation(); |
637 | 15.3M | PP.Lex(Tok); |
638 | 15.3M | return PrevTokLocation; |
639 | 15.3M | } |
640 | | |
641 | | /// ConsumeStringToken - Consume the current 'peek token', lexing a new one |
642 | | /// and returning the token kind. This method is specific to strings, as it |
643 | | /// handles string literal concatenation, as per C99 5.1.1.2, translation |
644 | | /// phase #6. |
645 | 5.62M | SourceLocation ConsumeStringToken() { |
646 | 5.62M | assert(isTokenStringLiteral() && |
647 | 5.62M | "Should only consume string literals with this method"); |
648 | 0 | PrevTokLocation = Tok.getLocation(); |
649 | 5.62M | PP.Lex(Tok); |
650 | 5.62M | return PrevTokLocation; |
651 | 5.62M | } |
652 | | |
653 | | /// Consume the current code-completion token. |
654 | | /// |
655 | | /// This routine can be called to consume the code-completion token and |
656 | | /// continue processing in special cases where \c cutOffParsing() isn't |
657 | | /// desired, such as token caching or completion with lookahead. |
658 | 180 | SourceLocation ConsumeCodeCompletionToken() { |
659 | 180 | assert(Tok.is(tok::code_completion)); |
660 | 0 | PrevTokLocation = Tok.getLocation(); |
661 | 180 | PP.Lex(Tok); |
662 | 180 | return PrevTokLocation; |
663 | 180 | } |
664 | | |
665 | | ///\ brief When we are consuming a code-completion token without having |
666 | | /// matched specific position in the grammar, provide code-completion results |
667 | | /// based on context. |
668 | | /// |
669 | | /// \returns the source location of the code-completion token. |
670 | | SourceLocation handleUnexpectedCodeCompletionToken(); |
671 | | |
672 | | /// Abruptly cut off parsing; mainly used when we have reached the |
673 | | /// code-completion point. |
674 | 1.33k | void cutOffParsing() { |
675 | 1.33k | if (PP.isCodeCompletionEnabled()) |
676 | 1.31k | PP.setCodeCompletionReached(); |
677 | | // Cut off parsing by acting as if we reached the end-of-file. |
678 | 1.33k | Tok.setKind(tok::eof); |
679 | 1.33k | } |
680 | | |
681 | | /// Determine if we're at the end of the file or at a transition |
682 | | /// between modules. |
683 | 990k | bool isEofOrEom() { |
684 | 990k | tok::TokenKind Kind = Tok.getKind(); |
685 | 990k | return Kind == tok::eof || Kind == tok::annot_module_begin990k || |
686 | 990k | Kind == tok::annot_module_end990k || Kind == tok::annot_module_include990k ; |
687 | 990k | } |
688 | | |
689 | | /// Checks if the \p Level is valid for use in a fold expression. |
690 | | bool isFoldOperator(prec::Level Level) const; |
691 | | |
692 | | /// Checks if the \p Kind is a valid operator for fold expressions. |
693 | | bool isFoldOperator(tok::TokenKind Kind) const; |
694 | | |
695 | | /// Initialize all pragma handlers. |
696 | | void initializePragmaHandlers(); |
697 | | |
698 | | /// Destroy and reset all pragma handlers. |
699 | | void resetPragmaHandlers(); |
700 | | |
701 | | /// Handle the annotation token produced for #pragma unused(...) |
702 | | void HandlePragmaUnused(); |
703 | | |
704 | | /// Handle the annotation token produced for |
705 | | /// #pragma GCC visibility... |
706 | | void HandlePragmaVisibility(); |
707 | | |
708 | | /// Handle the annotation token produced for |
709 | | /// #pragma pack... |
710 | | void HandlePragmaPack(); |
711 | | |
712 | | /// Handle the annotation token produced for |
713 | | /// #pragma ms_struct... |
714 | | void HandlePragmaMSStruct(); |
715 | | |
716 | | void HandlePragmaMSPointersToMembers(); |
717 | | |
718 | | void HandlePragmaMSVtorDisp(); |
719 | | |
720 | | void HandlePragmaMSPragma(); |
721 | | bool HandlePragmaMSSection(StringRef PragmaName, |
722 | | SourceLocation PragmaLocation); |
723 | | bool HandlePragmaMSSegment(StringRef PragmaName, |
724 | | SourceLocation PragmaLocation); |
725 | | bool HandlePragmaMSInitSeg(StringRef PragmaName, |
726 | | SourceLocation PragmaLocation); |
727 | | bool HandlePragmaMSFunction(StringRef PragmaName, |
728 | | SourceLocation PragmaLocation); |
729 | | bool HandlePragmaMSAllocText(StringRef PragmaName, |
730 | | SourceLocation PragmaLocation); |
731 | | bool HandlePragmaMSOptimize(StringRef PragmaName, |
732 | | SourceLocation PragmaLocation); |
733 | | |
734 | | /// Handle the annotation token produced for |
735 | | /// #pragma align... |
736 | | void HandlePragmaAlign(); |
737 | | |
738 | | /// Handle the annotation token produced for |
739 | | /// #pragma clang __debug dump... |
740 | | void HandlePragmaDump(); |
741 | | |
742 | | /// Handle the annotation token produced for |
743 | | /// #pragma weak id... |
744 | | void HandlePragmaWeak(); |
745 | | |
746 | | /// Handle the annotation token produced for |
747 | | /// #pragma weak id = id... |
748 | | void HandlePragmaWeakAlias(); |
749 | | |
750 | | /// Handle the annotation token produced for |
751 | | /// #pragma redefine_extname... |
752 | | void HandlePragmaRedefineExtname(); |
753 | | |
754 | | /// Handle the annotation token produced for |
755 | | /// #pragma STDC FP_CONTRACT... |
756 | | void HandlePragmaFPContract(); |
757 | | |
758 | | /// Handle the annotation token produced for |
759 | | /// #pragma STDC FENV_ACCESS... |
760 | | void HandlePragmaFEnvAccess(); |
761 | | |
762 | | /// Handle the annotation token produced for |
763 | | /// #pragma STDC FENV_ROUND... |
764 | | void HandlePragmaFEnvRound(); |
765 | | |
766 | | /// Handle the annotation token produced for |
767 | | /// #pragma float_control |
768 | | void HandlePragmaFloatControl(); |
769 | | |
770 | | /// \brief Handle the annotation token produced for |
771 | | /// #pragma clang fp ... |
772 | | void HandlePragmaFP(); |
773 | | |
774 | | /// Handle the annotation token produced for |
775 | | /// #pragma OPENCL EXTENSION... |
776 | | void HandlePragmaOpenCLExtension(); |
777 | | |
778 | | /// Handle the annotation token produced for |
779 | | /// #pragma clang __debug captured |
780 | | StmtResult HandlePragmaCaptured(); |
781 | | |
782 | | /// Handle the annotation token produced for |
783 | | /// #pragma clang loop and #pragma unroll. |
784 | | bool HandlePragmaLoopHint(LoopHint &Hint); |
785 | | |
786 | | bool ParsePragmaAttributeSubjectMatchRuleSet( |
787 | | attr::ParsedSubjectMatchRuleSet &SubjectMatchRules, |
788 | | SourceLocation &AnyLoc, SourceLocation &LastMatchRuleEndLoc); |
789 | | |
790 | | void HandlePragmaAttribute(); |
791 | | |
792 | | /// GetLookAheadToken - This peeks ahead N tokens and returns that token |
793 | | /// without consuming any tokens. LookAhead(0) returns 'Tok', LookAhead(1) |
794 | | /// returns the token after Tok, etc. |
795 | | /// |
796 | | /// Note that this differs from the Preprocessor's LookAhead method, because |
797 | | /// the Parser always has one token lexed that the preprocessor doesn't. |
798 | | /// |
799 | 4.44M | const Token &GetLookAheadToken(unsigned N) { |
800 | 4.44M | if (N == 0 || Tok.is(tok::eof)4.41M ) return Tok27.6k ; |
801 | 4.41M | return PP.LookAhead(N-1); |
802 | 4.44M | } |
803 | | |
804 | | public: |
805 | | /// NextToken - This peeks ahead one token and returns it without |
806 | | /// consuming it. |
807 | 245M | const Token &NextToken() { |
808 | 245M | return PP.LookAhead(0); |
809 | 245M | } |
810 | | |
811 | | /// getTypeAnnotation - Read a parsed type out of an annotation token. |
812 | 34.6M | static TypeResult getTypeAnnotation(const Token &Tok) { |
813 | 34.6M | if (!Tok.getAnnotationValue()) |
814 | 1.79k | return TypeError(); |
815 | 34.6M | return ParsedType::getFromOpaquePtr(Tok.getAnnotationValue()); |
816 | 34.6M | } |
817 | | |
818 | | private: |
819 | 34.4M | static void setTypeAnnotation(Token &Tok, TypeResult T) { |
820 | 34.4M | assert((T.isInvalid() || T.get()) && |
821 | 34.4M | "produced a valid-but-null type annotation?"); |
822 | 34.4M | Tok.setAnnotationValue(T.isInvalid() ? nullptr1.79k : T.get().getAsOpaquePtr()34.4M ); |
823 | 34.4M | } |
824 | | |
825 | 2.23M | static NamedDecl *getNonTypeAnnotation(const Token &Tok) { |
826 | 2.23M | return static_cast<NamedDecl*>(Tok.getAnnotationValue()); |
827 | 2.23M | } |
828 | | |
829 | 2.23M | static void setNonTypeAnnotation(Token &Tok, NamedDecl *ND) { |
830 | 2.23M | Tok.setAnnotationValue(ND); |
831 | 2.23M | } |
832 | | |
833 | 9.37k | static IdentifierInfo *getIdentifierAnnotation(const Token &Tok) { |
834 | 9.37k | return static_cast<IdentifierInfo*>(Tok.getAnnotationValue()); |
835 | 9.37k | } |
836 | | |
837 | 9.37k | static void setIdentifierAnnotation(Token &Tok, IdentifierInfo *ND) { |
838 | 9.37k | Tok.setAnnotationValue(ND); |
839 | 9.37k | } |
840 | | |
841 | | /// Read an already-translated primary expression out of an annotation |
842 | | /// token. |
843 | 1.00M | static ExprResult getExprAnnotation(const Token &Tok) { |
844 | 1.00M | return ExprResult::getFromOpaquePointer(Tok.getAnnotationValue()); |
845 | 1.00M | } |
846 | | |
847 | | /// Set the primary expression corresponding to the given annotation |
848 | | /// token. |
849 | 1.00M | static void setExprAnnotation(Token &Tok, ExprResult ER) { |
850 | 1.00M | Tok.setAnnotationValue(ER.getAsOpaquePointer()); |
851 | 1.00M | } |
852 | | |
853 | | public: |
854 | | // If NeedType is true, then TryAnnotateTypeOrScopeToken will try harder to |
855 | | // find a type name by attempting typo correction. |
856 | | bool TryAnnotateTypeOrScopeToken(); |
857 | | bool TryAnnotateTypeOrScopeTokenAfterScopeSpec(CXXScopeSpec &SS, |
858 | | bool IsNewScope); |
859 | | bool TryAnnotateCXXScopeToken(bool EnteringContext = false); |
860 | | |
861 | 29.6M | bool MightBeCXXScopeToken() { |
862 | 29.6M | return Tok.is(tok::identifier) || Tok.is(tok::coloncolon)218k || |
863 | 29.6M | (217k Tok.is(tok::annot_template_id)217k && |
864 | 217k | NextToken().is(tok::coloncolon)0 ) || |
865 | 29.6M | Tok.is(tok::kw_decltype)217k || Tok.is(tok::kw___super)189k ; |
866 | 29.6M | } |
867 | 209k | bool TryAnnotateOptionalCXXScopeToken(bool EnteringContext = false) { |
868 | 209k | return MightBeCXXScopeToken() && TryAnnotateCXXScopeToken(EnteringContext)20.3k ; |
869 | 209k | } |
870 | | |
871 | | private: |
872 | | enum AnnotatedNameKind { |
873 | | /// Annotation has failed and emitted an error. |
874 | | ANK_Error, |
875 | | /// The identifier is a tentatively-declared name. |
876 | | ANK_TentativeDecl, |
877 | | /// The identifier is a template name. FIXME: Add an annotation for that. |
878 | | ANK_TemplateName, |
879 | | /// The identifier can't be resolved. |
880 | | ANK_Unresolved, |
881 | | /// Annotation was successful. |
882 | | ANK_Success |
883 | | }; |
884 | | AnnotatedNameKind TryAnnotateName(CorrectionCandidateCallback *CCC = nullptr); |
885 | | |
886 | | /// Push a tok::annot_cxxscope token onto the token stream. |
887 | | void AnnotateScopeToken(CXXScopeSpec &SS, bool IsNewAnnotation); |
888 | | |
889 | | /// TryAltiVecToken - Check for context-sensitive AltiVec identifier tokens, |
890 | | /// replacing them with the non-context-sensitive keywords. This returns |
891 | | /// true if the token was replaced. |
892 | | bool TryAltiVecToken(DeclSpec &DS, SourceLocation Loc, |
893 | | const char *&PrevSpec, unsigned &DiagID, |
894 | 66.1M | bool &isInvalid) { |
895 | 66.1M | if (!getLangOpts().AltiVec && !getLangOpts().ZVector66.0M ) |
896 | 66.0M | return false; |
897 | | |
898 | 76.9k | if (Tok.getIdentifierInfo() != Ident_vector && |
899 | 76.9k | Tok.getIdentifierInfo() != Ident_bool9.22k && |
900 | 76.9k | Tok.getIdentifierInfo() != Ident_Bool5.18k && |
901 | 76.9k | (5.18k !getLangOpts().AltiVec5.18k || Tok.getIdentifierInfo() != Ident_pixel5.17k )) |
902 | 2.63k | return false; |
903 | | |
904 | 74.2k | return TryAltiVecTokenOutOfLine(DS, Loc, PrevSpec, DiagID, isInvalid); |
905 | 76.9k | } |
906 | | |
907 | | /// TryAltiVecVectorToken - Check for context-sensitive AltiVec vector |
908 | | /// identifier token, replacing it with the non-context-sensitive __vector. |
909 | | /// This returns true if the token was replaced. |
910 | 49.9M | bool TryAltiVecVectorToken() { |
911 | 49.9M | if ((!getLangOpts().AltiVec && !getLangOpts().ZVector49.9M ) || |
912 | 49.9M | Tok.getIdentifierInfo() != Ident_vector69.2k ) return false49.9M ; |
913 | 56.2k | return TryAltiVecVectorTokenOutOfLine(); |
914 | 49.9M | } |
915 | | |
916 | | bool TryAltiVecVectorTokenOutOfLine(); |
917 | | bool TryAltiVecTokenOutOfLine(DeclSpec &DS, SourceLocation Loc, |
918 | | const char *&PrevSpec, unsigned &DiagID, |
919 | | bool &isInvalid); |
920 | | |
921 | | /// Returns true if the current token is the identifier 'instancetype'. |
922 | | /// |
923 | | /// Should only be used in Objective-C language modes. |
924 | 222k | bool isObjCInstancetype() { |
925 | 222k | assert(getLangOpts().ObjC); |
926 | 222k | if (Tok.isAnnotation()) |
927 | 2 | return false; |
928 | 222k | if (!Ident_instancetype) |
929 | 596 | Ident_instancetype = PP.getIdentifierInfo("instancetype"); |
930 | 222k | return Tok.getIdentifierInfo() == Ident_instancetype; |
931 | 222k | } |
932 | | |
933 | | /// TryKeywordIdentFallback - For compatibility with system headers using |
934 | | /// keywords as identifiers, attempt to convert the current token to an |
935 | | /// identifier and optionally disable the keyword for the remainder of the |
936 | | /// translation unit. This returns false if the token was not replaced, |
937 | | /// otherwise emits a diagnostic and returns true. |
938 | | bool TryKeywordIdentFallback(bool DisableKeyword); |
939 | | |
940 | | /// Get the TemplateIdAnnotation from the token. |
941 | | TemplateIdAnnotation *takeTemplateIdAnnotation(const Token &tok); |
942 | | |
943 | | /// TentativeParsingAction - An object that is used as a kind of "tentative |
944 | | /// parsing transaction". It gets instantiated to mark the token position and |
945 | | /// after the token consumption is done, Commit() or Revert() is called to |
946 | | /// either "commit the consumed tokens" or revert to the previously marked |
947 | | /// token position. Example: |
948 | | /// |
949 | | /// TentativeParsingAction TPA(*this); |
950 | | /// ConsumeToken(); |
951 | | /// .... |
952 | | /// TPA.Revert(); |
953 | | /// |
954 | | class TentativeParsingAction { |
955 | | Parser &P; |
956 | | PreferredTypeBuilder PrevPreferredType; |
957 | | Token PrevTok; |
958 | | size_t PrevTentativelyDeclaredIdentifierCount; |
959 | | unsigned short PrevParenCount, PrevBracketCount, PrevBraceCount; |
960 | | bool isActive; |
961 | | |
962 | | public: |
963 | | explicit TentativeParsingAction(Parser &p) |
964 | 11.7M | : P(p), PrevPreferredType(P.PreferredType) { |
965 | 11.7M | PrevTok = P.Tok; |
966 | 11.7M | PrevTentativelyDeclaredIdentifierCount = |
967 | 11.7M | P.TentativelyDeclaredIdentifiers.size(); |
968 | 11.7M | PrevParenCount = P.ParenCount; |
969 | 11.7M | PrevBracketCount = P.BracketCount; |
970 | 11.7M | PrevBraceCount = P.BraceCount; |
971 | 11.7M | P.PP.EnableBacktrackAtThisPos(); |
972 | 11.7M | isActive = true; |
973 | 11.7M | } |
974 | 47.2k | void Commit() { |
975 | 47.2k | assert(isActive && "Parsing action was finished!"); |
976 | 0 | P.TentativelyDeclaredIdentifiers.resize( |
977 | 47.2k | PrevTentativelyDeclaredIdentifierCount); |
978 | 47.2k | P.PP.CommitBacktrackedTokens(); |
979 | 47.2k | isActive = false; |
980 | 47.2k | } |
981 | 11.7M | void Revert() { |
982 | 11.7M | assert(isActive && "Parsing action was finished!"); |
983 | 0 | P.PP.Backtrack(); |
984 | 11.7M | P.PreferredType = PrevPreferredType; |
985 | 11.7M | P.Tok = PrevTok; |
986 | 11.7M | P.TentativelyDeclaredIdentifiers.resize( |
987 | 11.7M | PrevTentativelyDeclaredIdentifierCount); |
988 | 11.7M | P.ParenCount = PrevParenCount; |
989 | 11.7M | P.BracketCount = PrevBracketCount; |
990 | 11.7M | P.BraceCount = PrevBraceCount; |
991 | 11.7M | isActive = false; |
992 | 11.7M | } |
993 | 11.7M | ~TentativeParsingAction() { |
994 | 11.7M | assert(!isActive && "Forgot to call Commit or Revert!"); |
995 | 11.7M | } |
996 | | }; |
997 | | /// A TentativeParsingAction that automatically reverts in its destructor. |
998 | | /// Useful for disambiguation parses that will always be reverted. |
999 | | class RevertingTentativeParsingAction |
1000 | | : private Parser::TentativeParsingAction { |
1001 | | public: |
1002 | | RevertingTentativeParsingAction(Parser &P) |
1003 | 10.0M | : Parser::TentativeParsingAction(P) {} |
1004 | 10.0M | ~RevertingTentativeParsingAction() { Revert(); } |
1005 | | }; |
1006 | | |
1007 | | class UnannotatedTentativeParsingAction; |
1008 | | |
1009 | | /// ObjCDeclContextSwitch - An object used to switch context from |
1010 | | /// an objective-c decl context to its enclosing decl context and |
1011 | | /// back. |
1012 | | class ObjCDeclContextSwitch { |
1013 | | Parser &P; |
1014 | | ObjCContainerDecl *DC; |
1015 | | SaveAndRestore<bool> WithinObjCContainer; |
1016 | | public: |
1017 | | explicit ObjCDeclContextSwitch(Parser &p) |
1018 | | : P(p), DC(p.getObjCDeclContext()), |
1019 | 33.7M | WithinObjCContainer(P.ParsingInObjCContainer, DC != nullptr) { |
1020 | 33.7M | if (DC) |
1021 | 1.67M | P.Actions.ActOnObjCTemporaryExitContainerContext(DC); |
1022 | 33.7M | } |
1023 | 33.7M | ~ObjCDeclContextSwitch() { |
1024 | 33.7M | if (DC) |
1025 | 1.67M | P.Actions.ActOnObjCReenterContainerContext(DC); |
1026 | 33.7M | } |
1027 | | }; |
1028 | | |
1029 | | /// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the |
1030 | | /// input. If so, it is consumed and false is returned. |
1031 | | /// |
1032 | | /// If a trivial punctuator misspelling is encountered, a FixIt error |
1033 | | /// diagnostic is issued and false is returned after recovery. |
1034 | | /// |
1035 | | /// If the input is malformed, this emits the specified diagnostic and true is |
1036 | | /// returned. |
1037 | | bool ExpectAndConsume(tok::TokenKind ExpectedTok, |
1038 | | unsigned Diag = diag::err_expected, |
1039 | | StringRef DiagMsg = ""); |
1040 | | |
1041 | | /// The parser expects a semicolon and, if present, will consume it. |
1042 | | /// |
1043 | | /// If the next token is not a semicolon, this emits the specified diagnostic, |
1044 | | /// or, if there's just some closing-delimiter noise (e.g., ')' or ']') prior |
1045 | | /// to the semicolon, consumes that extra token. |
1046 | | bool ExpectAndConsumeSemi(unsigned DiagID); |
1047 | | |
1048 | | /// The kind of extra semi diagnostic to emit. |
1049 | | enum ExtraSemiKind { |
1050 | | OutsideFunction = 0, |
1051 | | InsideStruct = 1, |
1052 | | InstanceVariableList = 2, |
1053 | | AfterMemberFunctionDefinition = 3 |
1054 | | }; |
1055 | | |
1056 | | /// Consume any extra semi-colons until the end of the line. |
1057 | | void ConsumeExtraSemi(ExtraSemiKind Kind, DeclSpec::TST T = TST_unspecified); |
1058 | | |
1059 | | /// Return false if the next token is an identifier. An 'expected identifier' |
1060 | | /// error is emitted otherwise. |
1061 | | /// |
1062 | | /// The parser tries to recover from the error by checking if the next token |
1063 | | /// is a C++ keyword when parsing Objective-C++. Return false if the recovery |
1064 | | /// was successful. |
1065 | | bool expectIdentifier(); |
1066 | | |
1067 | | /// Kinds of compound pseudo-tokens formed by a sequence of two real tokens. |
1068 | | enum class CompoundToken { |
1069 | | /// A '(' '{' beginning a statement-expression. |
1070 | | StmtExprBegin, |
1071 | | /// A '}' ')' ending a statement-expression. |
1072 | | StmtExprEnd, |
1073 | | /// A '[' '[' beginning a C++11 or C2x attribute. |
1074 | | AttrBegin, |
1075 | | /// A ']' ']' ending a C++11 or C2x attribute. |
1076 | | AttrEnd, |
1077 | | /// A '::' '*' forming a C++ pointer-to-member declaration. |
1078 | | MemberPtr, |
1079 | | }; |
1080 | | |
1081 | | /// Check that a compound operator was written in a "sensible" way, and warn |
1082 | | /// if not. |
1083 | | void checkCompoundToken(SourceLocation FirstTokLoc, |
1084 | | tok::TokenKind FirstTokKind, CompoundToken Op); |
1085 | | |
1086 | | public: |
1087 | | //===--------------------------------------------------------------------===// |
1088 | | // Scope manipulation |
1089 | | |
1090 | | /// ParseScope - Introduces a new scope for parsing. The kind of |
1091 | | /// scope is determined by ScopeFlags. Objects of this type should |
1092 | | /// be created on the stack to coincide with the position where the |
1093 | | /// parser enters the new scope, and this object's constructor will |
1094 | | /// create that new scope. Similarly, once the object is destroyed |
1095 | | /// the parser will exit the scope. |
1096 | | class ParseScope { |
1097 | | Parser *Self; |
1098 | | ParseScope(const ParseScope &) = delete; |
1099 | | void operator=(const ParseScope &) = delete; |
1100 | | |
1101 | | public: |
1102 | | // ParseScope - Construct a new object to manage a scope in the |
1103 | | // parser Self where the new Scope is created with the flags |
1104 | | // ScopeFlags, but only when we aren't about to enter a compound statement. |
1105 | | ParseScope(Parser *Self, unsigned ScopeFlags, bool EnteredScope = true, |
1106 | | bool BeforeCompoundStmt = false) |
1107 | 35.2M | : Self(Self) { |
1108 | 35.2M | if (EnteredScope && !BeforeCompoundStmt35.2M ) |
1109 | 34.8M | Self->EnterScope(ScopeFlags); |
1110 | 452k | else { |
1111 | 452k | if (BeforeCompoundStmt) |
1112 | 451k | Self->incrementMSManglingNumber(); |
1113 | | |
1114 | 452k | this->Self = nullptr; |
1115 | 452k | } |
1116 | 35.2M | } |
1117 | | |
1118 | | // Exit - Exit the scope associated with this object now, rather |
1119 | | // than waiting until the object is destroyed. |
1120 | 68.7M | void Exit() { |
1121 | 68.7M | if (Self) { |
1122 | 34.8M | Self->ExitScope(); |
1123 | 34.8M | Self = nullptr; |
1124 | 34.8M | } |
1125 | 68.7M | } |
1126 | | |
1127 | 35.2M | ~ParseScope() { |
1128 | 35.2M | Exit(); |
1129 | 35.2M | } |
1130 | | }; |
1131 | | |
1132 | | /// Introduces zero or more scopes for parsing. The scopes will all be exited |
1133 | | /// when the object is destroyed. |
1134 | | class MultiParseScope { |
1135 | | Parser &Self; |
1136 | | unsigned NumScopes = 0; |
1137 | | |
1138 | | MultiParseScope(const MultiParseScope&) = delete; |
1139 | | |
1140 | | public: |
1141 | 6.35M | MultiParseScope(Parser &Self) : Self(Self) {} |
1142 | 1.89M | void Enter(unsigned ScopeFlags) { |
1143 | 1.89M | Self.EnterScope(ScopeFlags); |
1144 | 1.89M | ++NumScopes; |
1145 | 1.89M | } |
1146 | 6.48M | void Exit() { |
1147 | 8.37M | while (NumScopes) { |
1148 | 1.89M | Self.ExitScope(); |
1149 | 1.89M | --NumScopes; |
1150 | 1.89M | } |
1151 | 6.48M | } |
1152 | 6.35M | ~MultiParseScope() { |
1153 | 6.35M | Exit(); |
1154 | 6.35M | } |
1155 | | }; |
1156 | | |
1157 | | /// EnterScope - Start a new scope. |
1158 | | void EnterScope(unsigned ScopeFlags); |
1159 | | |
1160 | | /// ExitScope - Pop a scope off the scope stack. |
1161 | | void ExitScope(); |
1162 | | |
1163 | | /// Re-enter the template scopes for a declaration that might be a template. |
1164 | | unsigned ReenterTemplateScopes(MultiParseScope &S, Decl *D); |
1165 | | |
1166 | | private: |
1167 | | /// RAII object used to modify the scope flags for the current scope. |
1168 | | class ParseScopeFlags { |
1169 | | Scope *CurScope; |
1170 | | unsigned OldFlags; |
1171 | | ParseScopeFlags(const ParseScopeFlags &) = delete; |
1172 | | void operator=(const ParseScopeFlags &) = delete; |
1173 | | |
1174 | | public: |
1175 | | ParseScopeFlags(Parser *Self, unsigned ScopeFlags, bool ManageFlags = true); |
1176 | | ~ParseScopeFlags(); |
1177 | | }; |
1178 | | |
1179 | | //===--------------------------------------------------------------------===// |
1180 | | // Diagnostic Emission and Error recovery. |
1181 | | |
1182 | | public: |
1183 | | DiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID); |
1184 | | DiagnosticBuilder Diag(const Token &Tok, unsigned DiagID); |
1185 | 758 | DiagnosticBuilder Diag(unsigned DiagID) { |
1186 | 758 | return Diag(Tok, DiagID); |
1187 | 758 | } |
1188 | | |
1189 | | private: |
1190 | | void SuggestParentheses(SourceLocation Loc, unsigned DK, |
1191 | | SourceRange ParenRange); |
1192 | | void CheckNestedObjCContexts(SourceLocation AtLoc); |
1193 | | |
1194 | | public: |
1195 | | |
1196 | | /// Control flags for SkipUntil functions. |
1197 | | enum SkipUntilFlags { |
1198 | | StopAtSemi = 1 << 0, ///< Stop skipping at semicolon |
1199 | | /// Stop skipping at specified token, but don't skip the token itself |
1200 | | StopBeforeMatch = 1 << 1, |
1201 | | StopAtCodeCompletion = 1 << 2 ///< Stop at code completion |
1202 | | }; |
1203 | | |
1204 | | friend constexpr SkipUntilFlags operator|(SkipUntilFlags L, |
1205 | 44.1k | SkipUntilFlags R) { |
1206 | 44.1k | return static_cast<SkipUntilFlags>(static_cast<unsigned>(L) | |
1207 | 44.1k | static_cast<unsigned>(R)); |
1208 | 44.1k | } |
1209 | | |
1210 | | /// SkipUntil - Read tokens until we get to the specified token, then consume |
1211 | | /// it (unless StopBeforeMatch is specified). Because we cannot guarantee |
1212 | | /// that the token will ever occur, this skips to the next token, or to some |
1213 | | /// likely good stopping point. If Flags has StopAtSemi flag, skipping will |
1214 | | /// stop at a ';' character. Balances (), [], and {} delimiter tokens while |
1215 | | /// skipping. |
1216 | | /// |
1217 | | /// If SkipUntil finds the specified token, it returns true, otherwise it |
1218 | | /// returns false. |
1219 | | bool SkipUntil(tok::TokenKind T, |
1220 | 108k | SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0)) { |
1221 | 108k | return SkipUntil(llvm::makeArrayRef(T), Flags); |
1222 | 108k | } |
1223 | | bool SkipUntil(tok::TokenKind T1, tok::TokenKind T2, |
1224 | 35.8k | SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0)) { |
1225 | 35.8k | tok::TokenKind TokArray[] = {T1, T2}; |
1226 | 35.8k | return SkipUntil(TokArray, Flags); |
1227 | 35.8k | } |
1228 | | bool SkipUntil(tok::TokenKind T1, tok::TokenKind T2, tok::TokenKind T3, |
1229 | 44.0k | SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0)) { |
1230 | 44.0k | tok::TokenKind TokArray[] = {T1, T2, T3}; |
1231 | 44.0k | return SkipUntil(TokArray, Flags); |
1232 | 44.0k | } |
1233 | | bool SkipUntil(ArrayRef<tok::TokenKind> Toks, |
1234 | | SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0)); |
1235 | | |
1236 | | /// SkipMalformedDecl - Read tokens until we get to some likely good stopping |
1237 | | /// point for skipping past a simple-declaration. |
1238 | | void SkipMalformedDecl(); |
1239 | | |
1240 | | /// The location of the first statement inside an else that might |
1241 | | /// have a missleading indentation. If there is no |
1242 | | /// MisleadingIndentationChecker on an else active, this location is invalid. |
1243 | | SourceLocation MisleadingIndentationElseLoc; |
1244 | | |
1245 | | private: |
1246 | | //===--------------------------------------------------------------------===// |
1247 | | // Lexing and parsing of C++ inline methods. |
1248 | | |
1249 | | struct ParsingClass; |
1250 | | |
1251 | | /// [class.mem]p1: "... the class is regarded as complete within |
1252 | | /// - function bodies |
1253 | | /// - default arguments |
1254 | | /// - exception-specifications (TODO: C++0x) |
1255 | | /// - and brace-or-equal-initializers for non-static data members |
1256 | | /// (including such things in nested classes)." |
1257 | | /// LateParsedDeclarations build the tree of those elements so they can |
1258 | | /// be parsed after parsing the top-level class. |
1259 | | class LateParsedDeclaration { |
1260 | | public: |
1261 | | virtual ~LateParsedDeclaration(); |
1262 | | |
1263 | | virtual void ParseLexedMethodDeclarations(); |
1264 | | virtual void ParseLexedMemberInitializers(); |
1265 | | virtual void ParseLexedMethodDefs(); |
1266 | | virtual void ParseLexedAttributes(); |
1267 | | virtual void ParseLexedPragmas(); |
1268 | | }; |
1269 | | |
1270 | | /// Inner node of the LateParsedDeclaration tree that parses |
1271 | | /// all its members recursively. |
1272 | | class LateParsedClass : public LateParsedDeclaration { |
1273 | | public: |
1274 | | LateParsedClass(Parser *P, ParsingClass *C); |
1275 | | ~LateParsedClass() override; |
1276 | | |
1277 | | void ParseLexedMethodDeclarations() override; |
1278 | | void ParseLexedMemberInitializers() override; |
1279 | | void ParseLexedMethodDefs() override; |
1280 | | void ParseLexedAttributes() override; |
1281 | | void ParseLexedPragmas() override; |
1282 | | |
1283 | | private: |
1284 | | Parser *Self; |
1285 | | ParsingClass *Class; |
1286 | | }; |
1287 | | |
1288 | | /// Contains the lexed tokens of an attribute with arguments that |
1289 | | /// may reference member variables and so need to be parsed at the |
1290 | | /// end of the class declaration after parsing all other member |
1291 | | /// member declarations. |
1292 | | /// FIXME: Perhaps we should change the name of LateParsedDeclaration to |
1293 | | /// LateParsedTokens. |
1294 | | struct LateParsedAttribute : public LateParsedDeclaration { |
1295 | | Parser *Self; |
1296 | | CachedTokens Toks; |
1297 | | IdentifierInfo &AttrName; |
1298 | | IdentifierInfo *MacroII = nullptr; |
1299 | | SourceLocation AttrNameLoc; |
1300 | | SmallVector<Decl*, 2> Decls; |
1301 | | |
1302 | | explicit LateParsedAttribute(Parser *P, IdentifierInfo &Name, |
1303 | | SourceLocation Loc) |
1304 | 11.2k | : Self(P), AttrName(Name), AttrNameLoc(Loc) {} |
1305 | | |
1306 | | void ParseLexedAttributes() override; |
1307 | | |
1308 | 11.2k | void addDecl(Decl *D) { Decls.push_back(D); } |
1309 | | }; |
1310 | | |
1311 | | /// Contains the lexed tokens of a pragma with arguments that |
1312 | | /// may reference member variables and so need to be parsed at the |
1313 | | /// end of the class declaration after parsing all other member |
1314 | | /// member declarations. |
1315 | | class LateParsedPragma : public LateParsedDeclaration { |
1316 | | Parser *Self = nullptr; |
1317 | | AccessSpecifier AS = AS_none; |
1318 | | CachedTokens Toks; |
1319 | | |
1320 | | public: |
1321 | | explicit LateParsedPragma(Parser *P, AccessSpecifier AS) |
1322 | 86 | : Self(P), AS(AS) {} |
1323 | | |
1324 | 86 | void takeToks(CachedTokens &Cached) { Toks.swap(Cached); } |
1325 | 86 | const CachedTokens &toks() const { return Toks; } |
1326 | 86 | AccessSpecifier getAccessSpecifier() const { return AS; } |
1327 | | |
1328 | | void ParseLexedPragmas() override; |
1329 | | }; |
1330 | | |
1331 | | // A list of late-parsed attributes. Used by ParseGNUAttributes. |
1332 | | class LateParsedAttrList: public SmallVector<LateParsedAttribute *, 2> { |
1333 | | public: |
1334 | 33.9M | LateParsedAttrList(bool PSoon = false) : ParseSoon(PSoon) { } |
1335 | | |
1336 | 3.00M | bool parseSoon() { return ParseSoon; } |
1337 | | |
1338 | | private: |
1339 | | bool ParseSoon; // Are we planning to parse these shortly after creation? |
1340 | | }; |
1341 | | |
1342 | | /// Contains the lexed tokens of a member function definition |
1343 | | /// which needs to be parsed at the end of the class declaration |
1344 | | /// after parsing all other member declarations. |
1345 | | struct LexedMethod : public LateParsedDeclaration { |
1346 | | Parser *Self; |
1347 | | Decl *D; |
1348 | | CachedTokens Toks; |
1349 | | |
1350 | 873k | explicit LexedMethod(Parser *P, Decl *MD) : Self(P), D(MD) {} |
1351 | | |
1352 | | void ParseLexedMethodDefs() override; |
1353 | | }; |
1354 | | |
1355 | | /// LateParsedDefaultArgument - Keeps track of a parameter that may |
1356 | | /// have a default argument that cannot be parsed yet because it |
1357 | | /// occurs within a member function declaration inside the class |
1358 | | /// (C++ [class.mem]p2). |
1359 | | struct LateParsedDefaultArgument { |
1360 | | explicit LateParsedDefaultArgument(Decl *P, |
1361 | | std::unique_ptr<CachedTokens> Toks = nullptr) |
1362 | 205k | : Param(P), Toks(std::move(Toks)) { } |
1363 | | |
1364 | | /// Param - The parameter declaration for this parameter. |
1365 | | Decl *Param; |
1366 | | |
1367 | | /// Toks - The sequence of tokens that comprises the default |
1368 | | /// argument expression, not including the '=' or the terminating |
1369 | | /// ')' or ','. This will be NULL for parameters that have no |
1370 | | /// default argument. |
1371 | | std::unique_ptr<CachedTokens> Toks; |
1372 | | }; |
1373 | | |
1374 | | /// LateParsedMethodDeclaration - A method declaration inside a class that |
1375 | | /// contains at least one entity whose parsing needs to be delayed |
1376 | | /// until the class itself is completely-defined, such as a default |
1377 | | /// argument (C++ [class.mem]p2). |
1378 | | struct LateParsedMethodDeclaration : public LateParsedDeclaration { |
1379 | | explicit LateParsedMethodDeclaration(Parser *P, Decl *M) |
1380 | 120k | : Self(P), Method(M), ExceptionSpecTokens(nullptr) {} |
1381 | | |
1382 | | void ParseLexedMethodDeclarations() override; |
1383 | | |
1384 | | Parser *Self; |
1385 | | |
1386 | | /// Method - The method declaration. |
1387 | | Decl *Method; |
1388 | | |
1389 | | /// DefaultArgs - Contains the parameters of the function and |
1390 | | /// their default arguments. At least one of the parameters will |
1391 | | /// have a default argument, but all of the parameters of the |
1392 | | /// method will be stored so that they can be reintroduced into |
1393 | | /// scope at the appropriate times. |
1394 | | SmallVector<LateParsedDefaultArgument, 8> DefaultArgs; |
1395 | | |
1396 | | /// The set of tokens that make up an exception-specification that |
1397 | | /// has not yet been parsed. |
1398 | | CachedTokens *ExceptionSpecTokens; |
1399 | | }; |
1400 | | |
1401 | | /// LateParsedMemberInitializer - An initializer for a non-static class data |
1402 | | /// member whose parsing must to be delayed until the class is completely |
1403 | | /// defined (C++11 [class.mem]p2). |
1404 | | struct LateParsedMemberInitializer : public LateParsedDeclaration { |
1405 | | LateParsedMemberInitializer(Parser *P, Decl *FD) |
1406 | 4.78k | : Self(P), Field(FD) { } |
1407 | | |
1408 | | void ParseLexedMemberInitializers() override; |
1409 | | |
1410 | | Parser *Self; |
1411 | | |
1412 | | /// Field - The field declaration. |
1413 | | Decl *Field; |
1414 | | |
1415 | | /// CachedTokens - The sequence of tokens that comprises the initializer, |
1416 | | /// including any leading '='. |
1417 | | CachedTokens Toks; |
1418 | | }; |
1419 | | |
1420 | | /// LateParsedDeclarationsContainer - During parsing of a top (non-nested) |
1421 | | /// C++ class, its method declarations that contain parts that won't be |
1422 | | /// parsed until after the definition is completed (C++ [class.mem]p2), |
1423 | | /// the method declarations and possibly attached inline definitions |
1424 | | /// will be stored here with the tokens that will be parsed to create those |
1425 | | /// entities. |
1426 | | typedef SmallVector<LateParsedDeclaration*,2> LateParsedDeclarationsContainer; |
1427 | | |
1428 | | /// Representation of a class that has been parsed, including |
1429 | | /// any member function declarations or definitions that need to be |
1430 | | /// parsed after the corresponding top-level class is complete. |
1431 | | struct ParsingClass { |
1432 | | ParsingClass(Decl *TagOrTemplate, bool TopLevelClass, bool IsInterface) |
1433 | | : TopLevelClass(TopLevelClass), IsInterface(IsInterface), |
1434 | 790k | TagOrTemplate(TagOrTemplate) {} |
1435 | | |
1436 | | /// Whether this is a "top-level" class, meaning that it is |
1437 | | /// not nested within another class. |
1438 | | bool TopLevelClass : 1; |
1439 | | |
1440 | | /// Whether this class is an __interface. |
1441 | | bool IsInterface : 1; |
1442 | | |
1443 | | /// The class or class template whose definition we are parsing. |
1444 | | Decl *TagOrTemplate; |
1445 | | |
1446 | | /// LateParsedDeclarations - Method declarations, inline definitions and |
1447 | | /// nested classes that contain pieces whose parsing will be delayed until |
1448 | | /// the top-level class is fully defined. |
1449 | | LateParsedDeclarationsContainer LateParsedDeclarations; |
1450 | | }; |
1451 | | |
1452 | | /// The stack of classes that is currently being |
1453 | | /// parsed. Nested and local classes will be pushed onto this stack |
1454 | | /// when they are parsed, and removed afterward. |
1455 | | std::stack<ParsingClass *> ClassStack; |
1456 | | |
1457 | 10.8M | ParsingClass &getCurrentClass() { |
1458 | 10.8M | assert(!ClassStack.empty() && "No lexed method stacks!"); |
1459 | 0 | return *ClassStack.top(); |
1460 | 10.8M | } |
1461 | | |
1462 | | /// RAII object used to manage the parsing of a class definition. |
1463 | | class ParsingClassDefinition { |
1464 | | Parser &P; |
1465 | | bool Popped; |
1466 | | Sema::ParsingClassState State; |
1467 | | |
1468 | | public: |
1469 | | ParsingClassDefinition(Parser &P, Decl *TagOrTemplate, bool TopLevelClass, |
1470 | | bool IsInterface) |
1471 | | : P(P), Popped(false), |
1472 | 790k | State(P.PushParsingClass(TagOrTemplate, TopLevelClass, IsInterface)) { |
1473 | 790k | } |
1474 | | |
1475 | | /// Pop this class of the stack. |
1476 | 790k | void Pop() { |
1477 | 790k | assert(!Popped && "Nested class has already been popped"); |
1478 | 0 | Popped = true; |
1479 | 790k | P.PopParsingClass(State); |
1480 | 790k | } |
1481 | | |
1482 | 790k | ~ParsingClassDefinition() { |
1483 | 790k | if (!Popped) |
1484 | 67 | P.PopParsingClass(State); |
1485 | 790k | } |
1486 | | }; |
1487 | | |
1488 | | /// Contains information about any template-specific |
1489 | | /// information that has been parsed prior to parsing declaration |
1490 | | /// specifiers. |
1491 | | struct ParsedTemplateInfo { |
1492 | 139M | ParsedTemplateInfo() : Kind(NonTemplate), TemplateParams(nullptr) {} |
1493 | | |
1494 | | ParsedTemplateInfo(TemplateParameterLists *TemplateParams, |
1495 | | bool isSpecialization, |
1496 | | bool lastParameterListWasEmpty = false) |
1497 | | : Kind(isSpecialization? ExplicitSpecialization : Template), |
1498 | | TemplateParams(TemplateParams), |
1499 | 1.57M | LastParameterListWasEmpty(lastParameterListWasEmpty) { } |
1500 | | |
1501 | | explicit ParsedTemplateInfo(SourceLocation ExternLoc, |
1502 | | SourceLocation TemplateLoc) |
1503 | | : Kind(ExplicitInstantiation), TemplateParams(nullptr), |
1504 | | ExternLoc(ExternLoc), TemplateLoc(TemplateLoc), |
1505 | 55.9k | LastParameterListWasEmpty(false){ } |
1506 | | |
1507 | | /// The kind of template we are parsing. |
1508 | | enum { |
1509 | | /// We are not parsing a template at all. |
1510 | | NonTemplate = 0, |
1511 | | /// We are parsing a template declaration. |
1512 | | Template, |
1513 | | /// We are parsing an explicit specialization. |
1514 | | ExplicitSpecialization, |
1515 | | /// We are parsing an explicit instantiation. |
1516 | | ExplicitInstantiation |
1517 | | } Kind; |
1518 | | |
1519 | | /// The template parameter lists, for template declarations |
1520 | | /// and explicit specializations. |
1521 | | TemplateParameterLists *TemplateParams; |
1522 | | |
1523 | | /// The location of the 'extern' keyword, if any, for an explicit |
1524 | | /// instantiation |
1525 | | SourceLocation ExternLoc; |
1526 | | |
1527 | | /// The location of the 'template' keyword, for an explicit |
1528 | | /// instantiation. |
1529 | | SourceLocation TemplateLoc; |
1530 | | |
1531 | | /// Whether the last template parameter list was empty. |
1532 | | bool LastParameterListWasEmpty; |
1533 | | |
1534 | | SourceRange getSourceRange() const LLVM_READONLY; |
1535 | | }; |
1536 | | |
1537 | | // In ParseCXXInlineMethods.cpp. |
1538 | | struct ReenterTemplateScopeRAII; |
1539 | | struct ReenterClassScopeRAII; |
1540 | | |
1541 | | void LexTemplateFunctionForLateParsing(CachedTokens &Toks); |
1542 | | void ParseLateTemplatedFuncDef(LateParsedTemplate &LPT); |
1543 | | |
1544 | | static void LateTemplateParserCallback(void *P, LateParsedTemplate &LPT); |
1545 | | |
1546 | | Sema::ParsingClassState |
1547 | | PushParsingClass(Decl *TagOrTemplate, bool TopLevelClass, bool IsInterface); |
1548 | | void DeallocateParsedClasses(ParsingClass *Class); |
1549 | | void PopParsingClass(Sema::ParsingClassState); |
1550 | | |
1551 | | enum CachedInitKind { |
1552 | | CIK_DefaultArgument, |
1553 | | CIK_DefaultInitializer |
1554 | | }; |
1555 | | |
1556 | | NamedDecl *ParseCXXInlineMethodDef(AccessSpecifier AS, |
1557 | | const ParsedAttributesView &AccessAttrs, |
1558 | | ParsingDeclarator &D, |
1559 | | const ParsedTemplateInfo &TemplateInfo, |
1560 | | const VirtSpecifiers &VS, |
1561 | | SourceLocation PureSpecLoc); |
1562 | | void ParseCXXNonStaticMemberInitializer(Decl *VarD); |
1563 | | void ParseLexedAttributes(ParsingClass &Class); |
1564 | | void ParseLexedAttributeList(LateParsedAttrList &LAs, Decl *D, |
1565 | | bool EnterScope, bool OnDefinition); |
1566 | | void ParseLexedAttribute(LateParsedAttribute &LA, |
1567 | | bool EnterScope, bool OnDefinition); |
1568 | | void ParseLexedMethodDeclarations(ParsingClass &Class); |
1569 | | void ParseLexedMethodDeclaration(LateParsedMethodDeclaration &LM); |
1570 | | void ParseLexedMethodDefs(ParsingClass &Class); |
1571 | | void ParseLexedMethodDef(LexedMethod &LM); |
1572 | | void ParseLexedMemberInitializers(ParsingClass &Class); |
1573 | | void ParseLexedMemberInitializer(LateParsedMemberInitializer &MI); |
1574 | | void ParseLexedObjCMethodDefs(LexedMethod &LM, bool parseMethod); |
1575 | | void ParseLexedPragmas(ParsingClass &Class); |
1576 | | void ParseLexedPragma(LateParsedPragma &LP); |
1577 | | bool ConsumeAndStoreFunctionPrologue(CachedTokens &Toks); |
1578 | | bool ConsumeAndStoreInitializer(CachedTokens &Toks, CachedInitKind CIK); |
1579 | | bool ConsumeAndStoreConditional(CachedTokens &Toks); |
1580 | | bool ConsumeAndStoreUntil(tok::TokenKind T1, |
1581 | | CachedTokens &Toks, |
1582 | | bool StopAtSemi = true, |
1583 | 2.58M | bool ConsumeFinalToken = true) { |
1584 | 2.58M | return ConsumeAndStoreUntil(T1, T1, Toks, StopAtSemi, ConsumeFinalToken); |
1585 | 2.58M | } |
1586 | | bool ConsumeAndStoreUntil(tok::TokenKind T1, tok::TokenKind T2, |
1587 | | CachedTokens &Toks, |
1588 | | bool StopAtSemi = true, |
1589 | | bool ConsumeFinalToken = true); |
1590 | | |
1591 | | //===--------------------------------------------------------------------===// |
1592 | | // C99 6.9: External Definitions. |
1593 | | DeclGroupPtrTy ParseExternalDeclaration(ParsedAttributes &Attrs, |
1594 | | ParsingDeclSpec *DS = nullptr); |
1595 | | bool isDeclarationAfterDeclarator(); |
1596 | | bool isStartOfFunctionDefinition(const ParsingDeclarator &Declarator); |
1597 | | DeclGroupPtrTy |
1598 | | ParseDeclarationOrFunctionDefinition(ParsedAttributes &Attrs, |
1599 | | ParsingDeclSpec *DS = nullptr, |
1600 | | AccessSpecifier AS = AS_none); |
1601 | | DeclGroupPtrTy ParseDeclOrFunctionDefInternal(ParsedAttributes &Attrs, |
1602 | | ParsingDeclSpec &DS, |
1603 | | AccessSpecifier AS); |
1604 | | |
1605 | | void SkipFunctionBody(); |
1606 | | Decl *ParseFunctionDefinition(ParsingDeclarator &D, |
1607 | | const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(), |
1608 | | LateParsedAttrList *LateParsedAttrs = nullptr); |
1609 | | void ParseKNRParamDeclarations(Declarator &D); |
1610 | | // EndLoc is filled with the location of the last token of the simple-asm. |
1611 | | ExprResult ParseSimpleAsm(bool ForAsmLabel, SourceLocation *EndLoc); |
1612 | | ExprResult ParseAsmStringLiteral(bool ForAsmLabel); |
1613 | | |
1614 | | // Objective-C External Declarations |
1615 | | void MaybeSkipAttributes(tok::ObjCKeywordKind Kind); |
1616 | | DeclGroupPtrTy ParseObjCAtDirectives(ParsedAttributes &Attrs); |
1617 | | DeclGroupPtrTy ParseObjCAtClassDeclaration(SourceLocation atLoc); |
1618 | | Decl *ParseObjCAtInterfaceDeclaration(SourceLocation AtLoc, |
1619 | | ParsedAttributes &prefixAttrs); |
1620 | | class ObjCTypeParamListScope; |
1621 | | ObjCTypeParamList *parseObjCTypeParamList(); |
1622 | | ObjCTypeParamList *parseObjCTypeParamListOrProtocolRefs( |
1623 | | ObjCTypeParamListScope &Scope, SourceLocation &lAngleLoc, |
1624 | | SmallVectorImpl<IdentifierLocPair> &protocolIdents, |
1625 | | SourceLocation &rAngleLoc, bool mayBeProtocolList = true); |
1626 | | |
1627 | | void HelperActionsForIvarDeclarations(ObjCContainerDecl *interfaceDecl, |
1628 | | SourceLocation atLoc, |
1629 | | BalancedDelimiterTracker &T, |
1630 | | SmallVectorImpl<Decl *> &AllIvarDecls, |
1631 | | bool RBraceMissing); |
1632 | | void ParseObjCClassInstanceVariables(ObjCContainerDecl *interfaceDecl, |
1633 | | tok::ObjCKeywordKind visibility, |
1634 | | SourceLocation atLoc); |
1635 | | bool ParseObjCProtocolReferences(SmallVectorImpl<Decl *> &P, |
1636 | | SmallVectorImpl<SourceLocation> &PLocs, |
1637 | | bool WarnOnDeclarations, |
1638 | | bool ForObjCContainer, |
1639 | | SourceLocation &LAngleLoc, |
1640 | | SourceLocation &EndProtoLoc, |
1641 | | bool consumeLastToken); |
1642 | | |
1643 | | /// Parse the first angle-bracket-delimited clause for an |
1644 | | /// Objective-C object or object pointer type, which may be either |
1645 | | /// type arguments or protocol qualifiers. |
1646 | | void parseObjCTypeArgsOrProtocolQualifiers( |
1647 | | ParsedType baseType, |
1648 | | SourceLocation &typeArgsLAngleLoc, |
1649 | | SmallVectorImpl<ParsedType> &typeArgs, |
1650 | | SourceLocation &typeArgsRAngleLoc, |
1651 | | SourceLocation &protocolLAngleLoc, |
1652 | | SmallVectorImpl<Decl *> &protocols, |
1653 | | SmallVectorImpl<SourceLocation> &protocolLocs, |
1654 | | SourceLocation &protocolRAngleLoc, |
1655 | | bool consumeLastToken, |
1656 | | bool warnOnIncompleteProtocols); |
1657 | | |
1658 | | /// Parse either Objective-C type arguments or protocol qualifiers; if the |
1659 | | /// former, also parse protocol qualifiers afterward. |
1660 | | void parseObjCTypeArgsAndProtocolQualifiers( |
1661 | | ParsedType baseType, |
1662 | | SourceLocation &typeArgsLAngleLoc, |
1663 | | SmallVectorImpl<ParsedType> &typeArgs, |
1664 | | SourceLocation &typeArgsRAngleLoc, |
1665 | | SourceLocation &protocolLAngleLoc, |
1666 | | SmallVectorImpl<Decl *> &protocols, |
1667 | | SmallVectorImpl<SourceLocation> &protocolLocs, |
1668 | | SourceLocation &protocolRAngleLoc, |
1669 | | bool consumeLastToken); |
1670 | | |
1671 | | /// Parse a protocol qualifier type such as '<NSCopying>', which is |
1672 | | /// an anachronistic way of writing 'id<NSCopying>'. |
1673 | | TypeResult parseObjCProtocolQualifierType(SourceLocation &rAngleLoc); |
1674 | | |
1675 | | /// Parse Objective-C type arguments and protocol qualifiers, extending the |
1676 | | /// current type with the parsed result. |
1677 | | TypeResult parseObjCTypeArgsAndProtocolQualifiers(SourceLocation loc, |
1678 | | ParsedType type, |
1679 | | bool consumeLastToken, |
1680 | | SourceLocation &endLoc); |
1681 | | |
1682 | | void ParseObjCInterfaceDeclList(tok::ObjCKeywordKind contextKey, |
1683 | | Decl *CDecl); |
1684 | | DeclGroupPtrTy ParseObjCAtProtocolDeclaration(SourceLocation atLoc, |
1685 | | ParsedAttributes &prefixAttrs); |
1686 | | |
1687 | | struct ObjCImplParsingDataRAII { |
1688 | | Parser &P; |
1689 | | Decl *Dcl; |
1690 | | bool HasCFunction; |
1691 | | typedef SmallVector<LexedMethod*, 8> LateParsedObjCMethodContainer; |
1692 | | LateParsedObjCMethodContainer LateParsedObjCMethods; |
1693 | | |
1694 | | ObjCImplParsingDataRAII(Parser &parser, Decl *D) |
1695 | 5.37k | : P(parser), Dcl(D), HasCFunction(false) { |
1696 | 5.37k | P.CurParsedObjCImpl = this; |
1697 | 5.37k | Finished = false; |
1698 | 5.37k | } |
1699 | | ~ObjCImplParsingDataRAII(); |
1700 | | |
1701 | | void finish(SourceRange AtEnd); |
1702 | 20.2k | bool isFinished() const { return Finished; } |
1703 | | |
1704 | | private: |
1705 | | bool Finished; |
1706 | | }; |
1707 | | ObjCImplParsingDataRAII *CurParsedObjCImpl; |
1708 | | void StashAwayMethodOrFunctionBodyTokens(Decl *MDecl); |
1709 | | |
1710 | | DeclGroupPtrTy ParseObjCAtImplementationDeclaration(SourceLocation AtLoc, |
1711 | | ParsedAttributes &Attrs); |
1712 | | DeclGroupPtrTy ParseObjCAtEndDeclaration(SourceRange atEnd); |
1713 | | Decl *ParseObjCAtAliasDeclaration(SourceLocation atLoc); |
1714 | | Decl *ParseObjCPropertySynthesize(SourceLocation atLoc); |
1715 | | Decl *ParseObjCPropertyDynamic(SourceLocation atLoc); |
1716 | | |
1717 | | IdentifierInfo *ParseObjCSelectorPiece(SourceLocation &MethodLocation); |
1718 | | // Definitions for Objective-c context sensitive keywords recognition. |
1719 | | enum ObjCTypeQual { |
1720 | | objc_in=0, objc_out, objc_inout, objc_oneway, objc_bycopy, objc_byref, |
1721 | | objc_nonnull, objc_nullable, objc_null_unspecified, |
1722 | | objc_NumQuals |
1723 | | }; |
1724 | | IdentifierInfo *ObjCTypeQuals[objc_NumQuals]; |
1725 | | |
1726 | | bool isTokIdentifier_in() const; |
1727 | | |
1728 | | ParsedType ParseObjCTypeName(ObjCDeclSpec &DS, DeclaratorContext Ctx, |
1729 | | ParsedAttributes *ParamAttrs); |
1730 | | Decl *ParseObjCMethodPrototype( |
1731 | | tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword, |
1732 | | bool MethodDefinition = true); |
1733 | | Decl *ParseObjCMethodDecl(SourceLocation mLoc, tok::TokenKind mType, |
1734 | | tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword, |
1735 | | bool MethodDefinition=true); |
1736 | | void ParseObjCPropertyAttribute(ObjCDeclSpec &DS); |
1737 | | |
1738 | | Decl *ParseObjCMethodDefinition(); |
1739 | | |
1740 | | public: |
1741 | | //===--------------------------------------------------------------------===// |
1742 | | // C99 6.5: Expressions. |
1743 | | |
1744 | | /// TypeCastState - State whether an expression is or may be a type cast. |
1745 | | enum TypeCastState { |
1746 | | NotTypeCast = 0, |
1747 | | MaybeTypeCast, |
1748 | | IsTypeCast |
1749 | | }; |
1750 | | |
1751 | | ExprResult ParseExpression(TypeCastState isTypeCast = NotTypeCast); |
1752 | | ExprResult ParseConstantExpressionInExprEvalContext( |
1753 | | TypeCastState isTypeCast = NotTypeCast); |
1754 | | ExprResult ParseConstantExpression(TypeCastState isTypeCast = NotTypeCast); |
1755 | | ExprResult ParseCaseExpression(SourceLocation CaseLoc); |
1756 | | ExprResult ParseConstraintExpression(); |
1757 | | ExprResult |
1758 | | ParseConstraintLogicalAndExpression(bool IsTrailingRequiresClause); |
1759 | | ExprResult ParseConstraintLogicalOrExpression(bool IsTrailingRequiresClause); |
1760 | | // Expr that doesn't include commas. |
1761 | | ExprResult ParseAssignmentExpression(TypeCastState isTypeCast = NotTypeCast); |
1762 | | |
1763 | | ExprResult ParseMSAsmIdentifier(llvm::SmallVectorImpl<Token> &LineToks, |
1764 | | unsigned &NumLineToksConsumed, |
1765 | | bool IsUnevaluated); |
1766 | | |
1767 | | ExprResult ParseStringLiteralExpression(bool AllowUserDefinedLiteral = false); |
1768 | | |
1769 | | private: |
1770 | | ExprResult ParseExpressionWithLeadingAt(SourceLocation AtLoc); |
1771 | | |
1772 | | ExprResult ParseExpressionWithLeadingExtension(SourceLocation ExtLoc); |
1773 | | |
1774 | | ExprResult ParseRHSOfBinaryExpression(ExprResult LHS, |
1775 | | prec::Level MinPrec); |
1776 | | /// Control what ParseCastExpression will parse. |
1777 | | enum CastParseKind { |
1778 | | AnyCastExpr = 0, |
1779 | | UnaryExprOnly, |
1780 | | PrimaryExprOnly |
1781 | | }; |
1782 | | ExprResult ParseCastExpression(CastParseKind ParseKind, |
1783 | | bool isAddressOfOperand, |
1784 | | bool &NotCastExpr, |
1785 | | TypeCastState isTypeCast, |
1786 | | bool isVectorLiteral = false, |
1787 | | bool *NotPrimaryExpression = nullptr); |
1788 | | ExprResult ParseCastExpression(CastParseKind ParseKind, |
1789 | | bool isAddressOfOperand = false, |
1790 | | TypeCastState isTypeCast = NotTypeCast, |
1791 | | bool isVectorLiteral = false, |
1792 | | bool *NotPrimaryExpression = nullptr); |
1793 | | |
1794 | | /// Returns true if the next token cannot start an expression. |
1795 | | bool isNotExpressionStart(); |
1796 | | |
1797 | | /// Returns true if the next token would start a postfix-expression |
1798 | | /// suffix. |
1799 | 122k | bool isPostfixExpressionSuffixStart() { |
1800 | 122k | tok::TokenKind K = Tok.getKind(); |
1801 | 122k | return (K == tok::l_square || K == tok::l_paren114k || |
1802 | 122k | K == tok::period113k || K == tok::arrow107k || |
1803 | 122k | K == tok::plusplus91.4k || K == tok::minusminus91.4k ); |
1804 | 122k | } |
1805 | | |
1806 | | bool diagnoseUnknownTemplateId(ExprResult TemplateName, SourceLocation Less); |
1807 | | void checkPotentialAngleBracket(ExprResult &PotentialTemplateName); |
1808 | | bool checkPotentialAngleBracketDelimiter(const AngleBracketTracker::Loc &, |
1809 | | const Token &OpToken); |
1810 | 6.13M | bool checkPotentialAngleBracketDelimiter(const Token &OpToken) { |
1811 | 6.13M | if (auto *Info = AngleBrackets.getCurrent(*this)) |
1812 | 81 | return checkPotentialAngleBracketDelimiter(*Info, OpToken); |
1813 | 6.13M | return false; |
1814 | 6.13M | } |
1815 | | |
1816 | | ExprResult ParsePostfixExpressionSuffix(ExprResult LHS); |
1817 | | ExprResult ParseUnaryExprOrTypeTraitExpression(); |
1818 | | ExprResult ParseBuiltinPrimaryExpression(); |
1819 | | ExprResult ParseSYCLUniqueStableNameExpression(); |
1820 | | |
1821 | | ExprResult ParseExprAfterUnaryExprOrTypeTrait(const Token &OpTok, |
1822 | | bool &isCastExpr, |
1823 | | ParsedType &CastTy, |
1824 | | SourceRange &CastRange); |
1825 | | |
1826 | | typedef SmallVector<SourceLocation, 20> CommaLocsTy; |
1827 | | |
1828 | | /// ParseExpressionList - Used for C/C++ (argument-)expression-list. |
1829 | | bool ParseExpressionList(SmallVectorImpl<Expr *> &Exprs, |
1830 | | SmallVectorImpl<SourceLocation> &CommaLocs, |
1831 | | llvm::function_ref<void()> ExpressionStarts = |
1832 | | llvm::function_ref<void()>(), |
1833 | | bool FailImmediatelyOnInvalidExpr = false, |
1834 | | bool EarlyTypoCorrection = false); |
1835 | | |
1836 | | /// ParseSimpleExpressionList - A simple comma-separated list of expressions, |
1837 | | /// used for misc language extensions. |
1838 | | bool ParseSimpleExpressionList(SmallVectorImpl<Expr*> &Exprs, |
1839 | | SmallVectorImpl<SourceLocation> &CommaLocs); |
1840 | | |
1841 | | |
1842 | | /// ParenParseOption - Control what ParseParenExpression will parse. |
1843 | | enum ParenParseOption { |
1844 | | SimpleExpr, // Only parse '(' expression ')' |
1845 | | FoldExpr, // Also allow fold-expression <anything> |
1846 | | CompoundStmt, // Also allow '(' compound-statement ')' |
1847 | | CompoundLiteral, // Also allow '(' type-name ')' '{' ... '}' |
1848 | | CastExpr // Also allow '(' type-name ')' <anything> |
1849 | | }; |
1850 | | ExprResult ParseParenExpression(ParenParseOption &ExprType, |
1851 | | bool stopIfCastExpr, |
1852 | | bool isTypeCast, |
1853 | | ParsedType &CastTy, |
1854 | | SourceLocation &RParenLoc); |
1855 | | |
1856 | | ExprResult ParseCXXAmbiguousParenExpression( |
1857 | | ParenParseOption &ExprType, ParsedType &CastTy, |
1858 | | BalancedDelimiterTracker &Tracker, ColonProtectionRAIIObject &ColonProt); |
1859 | | ExprResult ParseCompoundLiteralExpression(ParsedType Ty, |
1860 | | SourceLocation LParenLoc, |
1861 | | SourceLocation RParenLoc); |
1862 | | |
1863 | | ExprResult ParseGenericSelectionExpression(); |
1864 | | |
1865 | | ExprResult ParseObjCBoolLiteral(); |
1866 | | |
1867 | | ExprResult ParseFoldExpression(ExprResult LHS, BalancedDelimiterTracker &T); |
1868 | | |
1869 | | //===--------------------------------------------------------------------===// |
1870 | | // C++ Expressions |
1871 | | ExprResult tryParseCXXIdExpression(CXXScopeSpec &SS, bool isAddressOfOperand, |
1872 | | Token &Replacement); |
1873 | | ExprResult ParseCXXIdExpression(bool isAddressOfOperand = false); |
1874 | | |
1875 | | bool areTokensAdjacent(const Token &A, const Token &B); |
1876 | | |
1877 | | void CheckForTemplateAndDigraph(Token &Next, ParsedType ObjectTypePtr, |
1878 | | bool EnteringContext, IdentifierInfo &II, |
1879 | | CXXScopeSpec &SS); |
1880 | | |
1881 | | bool ParseOptionalCXXScopeSpecifier(CXXScopeSpec &SS, |
1882 | | ParsedType ObjectType, |
1883 | | bool ObjectHasErrors, |
1884 | | bool EnteringContext, |
1885 | | bool *MayBePseudoDestructor = nullptr, |
1886 | | bool IsTypename = false, |
1887 | | IdentifierInfo **LastII = nullptr, |
1888 | | bool OnlyNamespace = false, |
1889 | | bool InUsingDeclaration = false); |
1890 | | |
1891 | | //===--------------------------------------------------------------------===// |
1892 | | // C++11 5.1.2: Lambda expressions |
1893 | | |
1894 | | /// Result of tentatively parsing a lambda-introducer. |
1895 | | enum class LambdaIntroducerTentativeParse { |
1896 | | /// This appears to be a lambda-introducer, which has been fully parsed. |
1897 | | Success, |
1898 | | /// This is a lambda-introducer, but has not been fully parsed, and this |
1899 | | /// function needs to be called again to parse it. |
1900 | | Incomplete, |
1901 | | /// This is definitely an Objective-C message send expression, rather than |
1902 | | /// a lambda-introducer, attribute-specifier, or array designator. |
1903 | | MessageSend, |
1904 | | /// This is not a lambda-introducer. |
1905 | | Invalid, |
1906 | | }; |
1907 | | |
1908 | | // [...] () -> type {...} |
1909 | | ExprResult ParseLambdaExpression(); |
1910 | | ExprResult TryParseLambdaExpression(); |
1911 | | bool |
1912 | | ParseLambdaIntroducer(LambdaIntroducer &Intro, |
1913 | | LambdaIntroducerTentativeParse *Tentative = nullptr); |
1914 | | ExprResult ParseLambdaExpressionAfterIntroducer(LambdaIntroducer &Intro); |
1915 | | |
1916 | | //===--------------------------------------------------------------------===// |
1917 | | // C++ 5.2p1: C++ Casts |
1918 | | ExprResult ParseCXXCasts(); |
1919 | | |
1920 | | /// Parse a __builtin_bit_cast(T, E), used to implement C++2a std::bit_cast. |
1921 | | ExprResult ParseBuiltinBitCast(); |
1922 | | |
1923 | | //===--------------------------------------------------------------------===// |
1924 | | // C++ 5.2p1: C++ Type Identification |
1925 | | ExprResult ParseCXXTypeid(); |
1926 | | |
1927 | | //===--------------------------------------------------------------------===// |
1928 | | // C++ : Microsoft __uuidof Expression |
1929 | | ExprResult ParseCXXUuidof(); |
1930 | | |
1931 | | //===--------------------------------------------------------------------===// |
1932 | | // C++ 5.2.4: C++ Pseudo-Destructor Expressions |
1933 | | ExprResult ParseCXXPseudoDestructor(Expr *Base, SourceLocation OpLoc, |
1934 | | tok::TokenKind OpKind, |
1935 | | CXXScopeSpec &SS, |
1936 | | ParsedType ObjectType); |
1937 | | |
1938 | | //===--------------------------------------------------------------------===// |
1939 | | // C++ 9.3.2: C++ 'this' pointer |
1940 | | ExprResult ParseCXXThis(); |
1941 | | |
1942 | | //===--------------------------------------------------------------------===// |
1943 | | // C++ 15: C++ Throw Expression |
1944 | | ExprResult ParseThrowExpression(); |
1945 | | |
1946 | | ExceptionSpecificationType tryParseExceptionSpecification( |
1947 | | bool Delayed, |
1948 | | SourceRange &SpecificationRange, |
1949 | | SmallVectorImpl<ParsedType> &DynamicExceptions, |
1950 | | SmallVectorImpl<SourceRange> &DynamicExceptionRanges, |
1951 | | ExprResult &NoexceptExpr, |
1952 | | CachedTokens *&ExceptionSpecTokens); |
1953 | | |
1954 | | // EndLoc is filled with the location of the last token of the specification. |
1955 | | ExceptionSpecificationType ParseDynamicExceptionSpecification( |
1956 | | SourceRange &SpecificationRange, |
1957 | | SmallVectorImpl<ParsedType> &Exceptions, |
1958 | | SmallVectorImpl<SourceRange> &Ranges); |
1959 | | |
1960 | | //===--------------------------------------------------------------------===// |
1961 | | // C++0x 8: Function declaration trailing-return-type |
1962 | | TypeResult ParseTrailingReturnType(SourceRange &Range, |
1963 | | bool MayBeFollowedByDirectInit); |
1964 | | |
1965 | | //===--------------------------------------------------------------------===// |
1966 | | // C++ 2.13.5: C++ Boolean Literals |
1967 | | ExprResult ParseCXXBoolLiteral(); |
1968 | | |
1969 | | //===--------------------------------------------------------------------===// |
1970 | | // C++ 5.2.3: Explicit type conversion (functional notation) |
1971 | | ExprResult ParseCXXTypeConstructExpression(const DeclSpec &DS); |
1972 | | |
1973 | | /// ParseCXXSimpleTypeSpecifier - [C++ 7.1.5.2] Simple type specifiers. |
1974 | | /// This should only be called when the current token is known to be part of |
1975 | | /// simple-type-specifier. |
1976 | | void ParseCXXSimpleTypeSpecifier(DeclSpec &DS); |
1977 | | |
1978 | | bool ParseCXXTypeSpecifierSeq(DeclSpec &DS); |
1979 | | |
1980 | | //===--------------------------------------------------------------------===// |
1981 | | // C++ 5.3.4 and 5.3.5: C++ new and delete |
1982 | | bool ParseExpressionListOrTypeId(SmallVectorImpl<Expr*> &Exprs, |
1983 | | Declarator &D); |
1984 | | void ParseDirectNewDeclarator(Declarator &D); |
1985 | | ExprResult ParseCXXNewExpression(bool UseGlobal, SourceLocation Start); |
1986 | | ExprResult ParseCXXDeleteExpression(bool UseGlobal, |
1987 | | SourceLocation Start); |
1988 | | |
1989 | | //===--------------------------------------------------------------------===// |
1990 | | // C++ if/switch/while/for condition expression. |
1991 | | struct ForRangeInfo; |
1992 | | Sema::ConditionResult ParseCXXCondition(StmtResult *InitStmt, |
1993 | | SourceLocation Loc, |
1994 | | Sema::ConditionKind CK, |
1995 | | bool MissingOK, |
1996 | | ForRangeInfo *FRI = nullptr, |
1997 | | bool EnterForConditionScope = false); |
1998 | | DeclGroupPtrTy ParseAliasDeclarationInInitStatement(DeclaratorContext Context, |
1999 | | ParsedAttributes &Attrs); |
2000 | | |
2001 | | //===--------------------------------------------------------------------===// |
2002 | | // C++ Coroutines |
2003 | | |
2004 | | ExprResult ParseCoyieldExpression(); |
2005 | | |
2006 | | //===--------------------------------------------------------------------===// |
2007 | | // C++ Concepts |
2008 | | |
2009 | | ExprResult ParseRequiresExpression(); |
2010 | | void ParseTrailingRequiresClause(Declarator &D); |
2011 | | |
2012 | | //===--------------------------------------------------------------------===// |
2013 | | // C99 6.7.8: Initialization. |
2014 | | |
2015 | | /// ParseInitializer |
2016 | | /// initializer: [C99 6.7.8] |
2017 | | /// assignment-expression |
2018 | | /// '{' ... |
2019 | 1.44M | ExprResult ParseInitializer() { |
2020 | 1.44M | if (Tok.isNot(tok::l_brace)) |
2021 | 1.35M | return ParseAssignmentExpression(); |
2022 | 83.5k | return ParseBraceInitializer(); |
2023 | 1.44M | } |
2024 | | bool MayBeDesignationStart(); |
2025 | | ExprResult ParseBraceInitializer(); |
2026 | | struct DesignatorCompletionInfo { |
2027 | | SmallVectorImpl<Expr *> &InitExprs; |
2028 | | QualType PreferredBaseType; |
2029 | | }; |
2030 | | ExprResult ParseInitializerWithPotentialDesignator(DesignatorCompletionInfo); |
2031 | | |
2032 | | //===--------------------------------------------------------------------===// |
2033 | | // clang Expressions |
2034 | | |
2035 | | ExprResult ParseBlockLiteralExpression(); // ^{...} |
2036 | | |
2037 | | //===--------------------------------------------------------------------===// |
2038 | | // Objective-C Expressions |
2039 | | ExprResult ParseObjCAtExpression(SourceLocation AtLocation); |
2040 | | ExprResult ParseObjCStringLiteral(SourceLocation AtLoc); |
2041 | | ExprResult ParseObjCCharacterLiteral(SourceLocation AtLoc); |
2042 | | ExprResult ParseObjCNumericLiteral(SourceLocation AtLoc); |
2043 | | ExprResult ParseObjCBooleanLiteral(SourceLocation AtLoc, bool ArgValue); |
2044 | | ExprResult ParseObjCArrayLiteral(SourceLocation AtLoc); |
2045 | | ExprResult ParseObjCDictionaryLiteral(SourceLocation AtLoc); |
2046 | | ExprResult ParseObjCBoxedExpr(SourceLocation AtLoc); |
2047 | | ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc); |
2048 | | ExprResult ParseObjCSelectorExpression(SourceLocation AtLoc); |
2049 | | ExprResult ParseObjCProtocolExpression(SourceLocation AtLoc); |
2050 | | bool isSimpleObjCMessageExpression(); |
2051 | | ExprResult ParseObjCMessageExpression(); |
2052 | | ExprResult ParseObjCMessageExpressionBody(SourceLocation LBracloc, |
2053 | | SourceLocation SuperLoc, |
2054 | | ParsedType ReceiverType, |
2055 | | Expr *ReceiverExpr); |
2056 | | ExprResult ParseAssignmentExprWithObjCMessageExprStart( |
2057 | | SourceLocation LBracloc, SourceLocation SuperLoc, |
2058 | | ParsedType ReceiverType, Expr *ReceiverExpr); |
2059 | | bool ParseObjCXXMessageReceiver(bool &IsExpr, void *&TypeOrExpr); |
2060 | | |
2061 | | //===--------------------------------------------------------------------===// |
2062 | | // C99 6.8: Statements and Blocks. |
2063 | | |
2064 | | /// A SmallVector of statements, with stack size 32 (as that is the only one |
2065 | | /// used.) |
2066 | | typedef SmallVector<Stmt*, 32> StmtVector; |
2067 | | /// A SmallVector of expressions, with stack size 12 (the maximum used.) |
2068 | | typedef SmallVector<Expr*, 12> ExprVector; |
2069 | | /// A SmallVector of types. |
2070 | | typedef SmallVector<ParsedType, 12> TypeVector; |
2071 | | |
2072 | | StmtResult |
2073 | | ParseStatement(SourceLocation *TrailingElseLoc = nullptr, |
2074 | | ParsedStmtContext StmtCtx = ParsedStmtContext::SubStmt); |
2075 | | StmtResult ParseStatementOrDeclaration( |
2076 | | StmtVector &Stmts, ParsedStmtContext StmtCtx, |
2077 | | SourceLocation *TrailingElseLoc = nullptr); |
2078 | | StmtResult ParseStatementOrDeclarationAfterAttributes( |
2079 | | StmtVector &Stmts, ParsedStmtContext StmtCtx, |
2080 | | SourceLocation *TrailingElseLoc, ParsedAttributes &DeclAttrs, |
2081 | | ParsedAttributes &DeclSpecAttrs); |
2082 | | StmtResult ParseExprStatement(ParsedStmtContext StmtCtx); |
2083 | | StmtResult ParseLabeledStatement(ParsedAttributes &Attrs, |
2084 | | ParsedStmtContext StmtCtx); |
2085 | | StmtResult ParseCaseStatement(ParsedStmtContext StmtCtx, |
2086 | | bool MissingCase = false, |
2087 | | ExprResult Expr = ExprResult()); |
2088 | | StmtResult ParseDefaultStatement(ParsedStmtContext StmtCtx); |
2089 | | StmtResult ParseCompoundStatement(bool isStmtExpr = false); |
2090 | | StmtResult ParseCompoundStatement(bool isStmtExpr, |
2091 | | unsigned ScopeFlags); |
2092 | | void ParseCompoundStatementLeadingPragmas(); |
2093 | | bool ConsumeNullStmt(StmtVector &Stmts); |
2094 | | StmtResult ParseCompoundStatementBody(bool isStmtExpr = false); |
2095 | | bool ParseParenExprOrCondition(StmtResult *InitStmt, |
2096 | | Sema::ConditionResult &CondResult, |
2097 | | SourceLocation Loc, Sema::ConditionKind CK, |
2098 | | bool MissingOK, SourceLocation *LParenLoc, |
2099 | | SourceLocation *RParenLoc); |
2100 | | StmtResult ParseIfStatement(SourceLocation *TrailingElseLoc); |
2101 | | StmtResult ParseSwitchStatement(SourceLocation *TrailingElseLoc); |
2102 | | StmtResult ParseWhileStatement(SourceLocation *TrailingElseLoc); |
2103 | | StmtResult ParseDoStatement(); |
2104 | | StmtResult ParseForStatement(SourceLocation *TrailingElseLoc); |
2105 | | StmtResult ParseGotoStatement(); |
2106 | | StmtResult ParseContinueStatement(); |
2107 | | StmtResult ParseBreakStatement(); |
2108 | | StmtResult ParseReturnStatement(); |
2109 | | StmtResult ParseAsmStatement(bool &msAsm); |
2110 | | StmtResult ParseMicrosoftAsmStatement(SourceLocation AsmLoc); |
2111 | | StmtResult ParsePragmaLoopHint(StmtVector &Stmts, ParsedStmtContext StmtCtx, |
2112 | | SourceLocation *TrailingElseLoc, |
2113 | | ParsedAttributes &Attrs); |
2114 | | |
2115 | | /// Describes the behavior that should be taken for an __if_exists |
2116 | | /// block. |
2117 | | enum IfExistsBehavior { |
2118 | | /// Parse the block; this code is always used. |
2119 | | IEB_Parse, |
2120 | | /// Skip the block entirely; this code is never used. |
2121 | | IEB_Skip, |
2122 | | /// Parse the block as a dependent block, which may be used in |
2123 | | /// some template instantiations but not others. |
2124 | | IEB_Dependent |
2125 | | }; |
2126 | | |
2127 | | /// Describes the condition of a Microsoft __if_exists or |
2128 | | /// __if_not_exists block. |
2129 | | struct IfExistsCondition { |
2130 | | /// The location of the initial keyword. |
2131 | | SourceLocation KeywordLoc; |
2132 | | /// Whether this is an __if_exists block (rather than an |
2133 | | /// __if_not_exists block). |
2134 | | bool IsIfExists; |
2135 | | |
2136 | | /// Nested-name-specifier preceding the name. |
2137 | | CXXScopeSpec SS; |
2138 | | |
2139 | | /// The name we're looking for. |
2140 | | UnqualifiedId Name; |
2141 | | |
2142 | | /// The behavior of this __if_exists or __if_not_exists block |
2143 | | /// should. |
2144 | | IfExistsBehavior Behavior; |
2145 | | }; |
2146 | | |
2147 | | bool ParseMicrosoftIfExistsCondition(IfExistsCondition& Result); |
2148 | | void ParseMicrosoftIfExistsStatement(StmtVector &Stmts); |
2149 | | void ParseMicrosoftIfExistsExternalDeclaration(); |
2150 | | void ParseMicrosoftIfExistsClassDeclaration(DeclSpec::TST TagType, |
2151 | | ParsedAttributes &AccessAttrs, |
2152 | | AccessSpecifier &CurAS); |
2153 | | bool ParseMicrosoftIfExistsBraceInitializer(ExprVector &InitExprs, |
2154 | | bool &InitExprsOk); |
2155 | | bool ParseAsmOperandsOpt(SmallVectorImpl<IdentifierInfo *> &Names, |
2156 | | SmallVectorImpl<Expr *> &Constraints, |
2157 | | SmallVectorImpl<Expr *> &Exprs); |
2158 | | |
2159 | | //===--------------------------------------------------------------------===// |
2160 | | // C++ 6: Statements and Blocks |
2161 | | |
2162 | | StmtResult ParseCXXTryBlock(); |
2163 | | StmtResult ParseCXXTryBlockCommon(SourceLocation TryLoc, bool FnTry = false); |
2164 | | StmtResult ParseCXXCatchBlock(bool FnCatch = false); |
2165 | | |
2166 | | //===--------------------------------------------------------------------===// |
2167 | | // MS: SEH Statements and Blocks |
2168 | | |
2169 | | StmtResult ParseSEHTryBlock(); |
2170 | | StmtResult ParseSEHExceptBlock(SourceLocation Loc); |
2171 | | StmtResult ParseSEHFinallyBlock(SourceLocation Loc); |
2172 | | StmtResult ParseSEHLeaveStatement(); |
2173 | | |
2174 | | //===--------------------------------------------------------------------===// |
2175 | | // Objective-C Statements |
2176 | | |
2177 | | StmtResult ParseObjCAtStatement(SourceLocation atLoc, |
2178 | | ParsedStmtContext StmtCtx); |
2179 | | StmtResult ParseObjCTryStmt(SourceLocation atLoc); |
2180 | | StmtResult ParseObjCThrowStmt(SourceLocation atLoc); |
2181 | | StmtResult ParseObjCSynchronizedStmt(SourceLocation atLoc); |
2182 | | StmtResult ParseObjCAutoreleasePoolStmt(SourceLocation atLoc); |
2183 | | |
2184 | | |
2185 | | //===--------------------------------------------------------------------===// |
2186 | | // C99 6.7: Declarations. |
2187 | | |
2188 | | /// A context for parsing declaration specifiers. TODO: flesh this |
2189 | | /// out, there are other significant restrictions on specifiers than |
2190 | | /// would be best implemented in the parser. |
2191 | | enum class DeclSpecContext { |
2192 | | DSC_normal, // normal context |
2193 | | DSC_class, // class context, enables 'friend' |
2194 | | DSC_type_specifier, // C++ type-specifier-seq or C specifier-qualifier-list |
2195 | | DSC_trailing, // C++11 trailing-type-specifier in a trailing return type |
2196 | | DSC_alias_declaration, // C++11 type-specifier-seq in an alias-declaration |
2197 | | DSC_top_level, // top-level/namespace declaration context |
2198 | | DSC_template_param, // template parameter context |
2199 | | DSC_template_type_arg, // template type argument context |
2200 | | DSC_objc_method_result, // ObjC method result context, enables 'instancetype' |
2201 | | DSC_condition, // condition declaration context |
2202 | | DSC_association // A _Generic selection expression's type association |
2203 | | }; |
2204 | | |
2205 | | /// Is this a context in which we are parsing just a type-specifier (or |
2206 | | /// trailing-type-specifier)? |
2207 | 16.2M | static bool isTypeSpecifier(DeclSpecContext DSC) { |
2208 | 16.2M | switch (DSC) { |
2209 | 8.90M | case DeclSpecContext::DSC_normal: |
2210 | 8.90M | case DeclSpecContext::DSC_template_param: |
2211 | 9.13M | case DeclSpecContext::DSC_class: |
2212 | 9.92M | case DeclSpecContext::DSC_top_level: |
2213 | 10.5M | case DeclSpecContext::DSC_objc_method_result: |
2214 | 10.5M | case DeclSpecContext::DSC_condition: |
2215 | 10.5M | return false; |
2216 | | |
2217 | 5.04M | case DeclSpecContext::DSC_template_type_arg: |
2218 | 5.53M | case DeclSpecContext::DSC_type_specifier: |
2219 | 5.54M | case DeclSpecContext::DSC_trailing: |
2220 | 5.67M | case DeclSpecContext::DSC_alias_declaration: |
2221 | 5.67M | case DeclSpecContext::DSC_association: |
2222 | 5.67M | return true; |
2223 | 16.2M | } |
2224 | 0 | llvm_unreachable("Missing DeclSpecContext case"); |
2225 | 0 | } |
2226 | | |
2227 | | /// Whether a defining-type-specifier is permitted in a given context. |
2228 | | enum class AllowDefiningTypeSpec { |
2229 | | /// The grammar doesn't allow a defining-type-specifier here, and we must |
2230 | | /// not parse one (eg, because a '{' could mean something else). |
2231 | | No, |
2232 | | /// The grammar doesn't allow a defining-type-specifier here, but we permit |
2233 | | /// one for error recovery purposes. Sema will reject. |
2234 | | NoButErrorRecovery, |
2235 | | /// The grammar allows a defining-type-specifier here, even though it's |
2236 | | /// always invalid. Sema will reject. |
2237 | | YesButInvalid, |
2238 | | /// The grammar allows a defining-type-specifier here, and one can be valid. |
2239 | | Yes |
2240 | | }; |
2241 | | |
2242 | | /// Is this a context in which we are parsing defining-type-specifiers (and |
2243 | | /// so permit class and enum definitions in addition to non-defining class and |
2244 | | /// enum elaborated-type-specifiers)? |
2245 | | static AllowDefiningTypeSpec |
2246 | 2.83M | isDefiningTypeSpecifierContext(DeclSpecContext DSC, bool IsCPlusPlus) { |
2247 | 2.83M | switch (DSC) { |
2248 | 553k | case DeclSpecContext::DSC_normal: |
2249 | 844k | case DeclSpecContext::DSC_class: |
2250 | 2.82M | case DeclSpecContext::DSC_top_level: |
2251 | 2.82M | case DeclSpecContext::DSC_alias_declaration: |
2252 | 2.82M | case DeclSpecContext::DSC_objc_method_result: |
2253 | 2.82M | return AllowDefiningTypeSpec::Yes; |
2254 | | |
2255 | 27 | case DeclSpecContext::DSC_condition: |
2256 | 56 | case DeclSpecContext::DSC_template_param: |
2257 | 56 | return AllowDefiningTypeSpec::YesButInvalid; |
2258 | | |
2259 | 553 | case DeclSpecContext::DSC_template_type_arg: |
2260 | 1.46k | case DeclSpecContext::DSC_type_specifier: |
2261 | 1.46k | return AllowDefiningTypeSpec::NoButErrorRecovery; |
2262 | | |
2263 | 17 | case DeclSpecContext::DSC_association: |
2264 | 17 | return IsCPlusPlus ? AllowDefiningTypeSpec::NoButErrorRecovery7 |
2265 | 17 | : AllowDefiningTypeSpec::Yes10 ; |
2266 | | |
2267 | 61 | case DeclSpecContext::DSC_trailing: |
2268 | 61 | return AllowDefiningTypeSpec::No; |
2269 | 2.83M | } |
2270 | 0 | llvm_unreachable("Missing DeclSpecContext case"); |
2271 | 0 | } |
2272 | | |
2273 | | /// Is this a context in which an opaque-enum-declaration can appear? |
2274 | 793k | static bool isOpaqueEnumDeclarationContext(DeclSpecContext DSC) { |
2275 | 793k | switch (DSC) { |
2276 | 330k | case DeclSpecContext::DSC_normal: |
2277 | 344k | case DeclSpecContext::DSC_class: |
2278 | 793k | case DeclSpecContext::DSC_top_level: |
2279 | 793k | return true; |
2280 | | |
2281 | 5 | case DeclSpecContext::DSC_alias_declaration: |
2282 | 5 | case DeclSpecContext::DSC_objc_method_result: |
2283 | 6 | case DeclSpecContext::DSC_condition: |
2284 | 11 | case DeclSpecContext::DSC_template_param: |
2285 | 18 | case DeclSpecContext::DSC_template_type_arg: |
2286 | 55 | case DeclSpecContext::DSC_type_specifier: |
2287 | 110 | case DeclSpecContext::DSC_trailing: |
2288 | 114 | case DeclSpecContext::DSC_association: |
2289 | 114 | return false; |
2290 | 793k | } |
2291 | 0 | llvm_unreachable("Missing DeclSpecContext case"); |
2292 | 0 | } |
2293 | | |
2294 | | /// Is this a context in which we can perform class template argument |
2295 | | /// deduction? |
2296 | 65.7M | static bool isClassTemplateDeductionContext(DeclSpecContext DSC) { |
2297 | 65.7M | switch (DSC) { |
2298 | 42.0M | case DeclSpecContext::DSC_normal: |
2299 | 42.1M | case DeclSpecContext::DSC_template_param: |
2300 | 43.6M | case DeclSpecContext::DSC_class: |
2301 | 65.2M | case DeclSpecContext::DSC_top_level: |
2302 | 65.2M | case DeclSpecContext::DSC_condition: |
2303 | 65.5M | case DeclSpecContext::DSC_type_specifier: |
2304 | 65.5M | case DeclSpecContext::DSC_association: |
2305 | 65.5M | return true; |
2306 | | |
2307 | 613 | case DeclSpecContext::DSC_objc_method_result: |
2308 | 99.2k | case DeclSpecContext::DSC_template_type_arg: |
2309 | 100k | case DeclSpecContext::DSC_trailing: |
2310 | 125k | case DeclSpecContext::DSC_alias_declaration: |
2311 | 125k | return false; |
2312 | 65.7M | } |
2313 | 0 | llvm_unreachable("Missing DeclSpecContext case"); |
2314 | 0 | } |
2315 | | |
2316 | | /// Information on a C++0x for-range-initializer found while parsing a |
2317 | | /// declaration which turns out to be a for-range-declaration. |
2318 | | struct ForRangeInit { |
2319 | | SourceLocation ColonLoc; |
2320 | | ExprResult RangeExpr; |
2321 | | |
2322 | 1.43M | bool ParsedForRangeDecl() { return !ColonLoc.isInvalid(); } |
2323 | | }; |
2324 | | struct ForRangeInfo : ForRangeInit { |
2325 | | StmtResult LoopVar; |
2326 | | }; |
2327 | | |
2328 | | DeclGroupPtrTy ParseDeclaration(DeclaratorContext Context, |
2329 | | SourceLocation &DeclEnd, |
2330 | | ParsedAttributes &DeclAttrs, |
2331 | | ParsedAttributes &DeclSpecAttrs, |
2332 | | SourceLocation *DeclSpecStart = nullptr); |
2333 | | DeclGroupPtrTy |
2334 | | ParseSimpleDeclaration(DeclaratorContext Context, SourceLocation &DeclEnd, |
2335 | | ParsedAttributes &DeclAttrs, |
2336 | | ParsedAttributes &DeclSpecAttrs, bool RequireSemi, |
2337 | | ForRangeInit *FRI = nullptr, |
2338 | | SourceLocation *DeclSpecStart = nullptr); |
2339 | | bool MightBeDeclarator(DeclaratorContext Context); |
2340 | | DeclGroupPtrTy ParseDeclGroup(ParsingDeclSpec &DS, DeclaratorContext Context, |
2341 | | ParsedAttributes &Attrs, |
2342 | | SourceLocation *DeclEnd = nullptr, |
2343 | | ForRangeInit *FRI = nullptr); |
2344 | | Decl *ParseDeclarationAfterDeclarator(Declarator &D, |
2345 | | const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo()); |
2346 | | bool ParseAsmAttributesAfterDeclarator(Declarator &D); |
2347 | | Decl *ParseDeclarationAfterDeclaratorAndAttributes( |
2348 | | Declarator &D, |
2349 | | const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(), |
2350 | | ForRangeInit *FRI = nullptr); |
2351 | | Decl *ParseFunctionStatementBody(Decl *Decl, ParseScope &BodyScope); |
2352 | | Decl *ParseFunctionTryBlock(Decl *Decl, ParseScope &BodyScope); |
2353 | | |
2354 | | /// When in code-completion, skip parsing of the function/method body |
2355 | | /// unless the body contains the code-completion point. |
2356 | | /// |
2357 | | /// \returns true if the function body was skipped. |
2358 | | bool trySkippingFunctionBody(); |
2359 | | |
2360 | | bool ParseImplicitInt(DeclSpec &DS, CXXScopeSpec *SS, |
2361 | | const ParsedTemplateInfo &TemplateInfo, |
2362 | | AccessSpecifier AS, DeclSpecContext DSC, |
2363 | | ParsedAttributes &Attrs); |
2364 | | DeclSpecContext |
2365 | | getDeclSpecContextFromDeclaratorContext(DeclaratorContext Context); |
2366 | | void ParseDeclarationSpecifiers( |
2367 | | DeclSpec &DS, |
2368 | | const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(), |
2369 | | AccessSpecifier AS = AS_none, |
2370 | | DeclSpecContext DSC = DeclSpecContext::DSC_normal, |
2371 | | LateParsedAttrList *LateAttrs = nullptr); |
2372 | | bool DiagnoseMissingSemiAfterTagDefinition( |
2373 | | DeclSpec &DS, AccessSpecifier AS, DeclSpecContext DSContext, |
2374 | | LateParsedAttrList *LateAttrs = nullptr); |
2375 | | |
2376 | | void ParseSpecifierQualifierList( |
2377 | | DeclSpec &DS, AccessSpecifier AS = AS_none, |
2378 | | DeclSpecContext DSC = DeclSpecContext::DSC_normal); |
2379 | | |
2380 | | void ParseObjCTypeQualifierList(ObjCDeclSpec &DS, |
2381 | | DeclaratorContext Context); |
2382 | | |
2383 | | void ParseEnumSpecifier(SourceLocation TagLoc, DeclSpec &DS, |
2384 | | const ParsedTemplateInfo &TemplateInfo, |
2385 | | AccessSpecifier AS, DeclSpecContext DSC); |
2386 | | void ParseEnumBody(SourceLocation StartLoc, Decl *TagDecl); |
2387 | | void ParseStructUnionBody(SourceLocation StartLoc, DeclSpec::TST TagType, |
2388 | | RecordDecl *TagDecl); |
2389 | | |
2390 | | void ParseStructDeclaration( |
2391 | | ParsingDeclSpec &DS, |
2392 | | llvm::function_ref<void(ParsingFieldDeclarator &)> FieldsCallback); |
2393 | | |
2394 | | bool isDeclarationSpecifier(bool DisambiguatingWithExpression = false); |
2395 | | bool isTypeSpecifierQualifier(); |
2396 | | |
2397 | | /// isKnownToBeTypeSpecifier - Return true if we know that the specified token |
2398 | | /// is definitely a type-specifier. Return false if it isn't part of a type |
2399 | | /// specifier or if we're not sure. |
2400 | | bool isKnownToBeTypeSpecifier(const Token &Tok) const; |
2401 | | |
2402 | | /// Return true if we know that we are definitely looking at a |
2403 | | /// decl-specifier, and isn't part of an expression such as a function-style |
2404 | | /// cast. Return false if it's no a decl-specifier, or we're not sure. |
2405 | 44.6k | bool isKnownToBeDeclarationSpecifier() { |
2406 | 44.6k | if (getLangOpts().CPlusPlus) |
2407 | 44.0k | return isCXXDeclarationSpecifier() == TPResult::True; |
2408 | 623 | return isDeclarationSpecifier(true); |
2409 | 44.6k | } |
2410 | | |
2411 | | /// isDeclarationStatement - Disambiguates between a declaration or an |
2412 | | /// expression statement, when parsing function bodies. |
2413 | | /// Returns true for declaration, false for expression. |
2414 | 3.91M | bool isDeclarationStatement() { |
2415 | 3.91M | if (getLangOpts().CPlusPlus) |
2416 | 2.83M | return isCXXDeclarationStatement(); |
2417 | 1.08M | return isDeclarationSpecifier(true); |
2418 | 3.91M | } |
2419 | | |
2420 | | /// isForInitDeclaration - Disambiguates between a declaration or an |
2421 | | /// expression in the context of the C 'clause-1' or the C++ |
2422 | | // 'for-init-statement' part of a 'for' statement. |
2423 | | /// Returns true for declaration, false for expression. |
2424 | 170k | bool isForInitDeclaration() { |
2425 | 170k | if (getLangOpts().OpenMP) |
2426 | 124k | Actions.startOpenMPLoop(); |
2427 | 170k | if (getLangOpts().CPlusPlus) |
2428 | 161k | return Tok.is(tok::kw_using) || |
2429 | 161k | isCXXSimpleDeclaration(/*AllowForRangeDecl=*/true)161k ; |
2430 | 8.77k | return isDeclarationSpecifier(true); |
2431 | 170k | } |
2432 | | |
2433 | | /// Determine whether this is a C++1z for-range-identifier. |
2434 | | bool isForRangeIdentifier(); |
2435 | | |
2436 | | /// Determine whether we are currently at the start of an Objective-C |
2437 | | /// class message that appears to be missing the open bracket '['. |
2438 | | bool isStartOfObjCClassMessageMissingOpenBracket(); |
2439 | | |
2440 | | /// Starting with a scope specifier, identifier, or |
2441 | | /// template-id that refers to the current class, determine whether |
2442 | | /// this is a constructor declarator. |
2443 | | bool isConstructorDeclarator(bool Unqualified, bool DeductionGuide = false); |
2444 | | |
2445 | | /// Specifies the context in which type-id/expression |
2446 | | /// disambiguation will occur. |
2447 | | enum TentativeCXXTypeIdContext { |
2448 | | TypeIdInParens, |
2449 | | TypeIdUnambiguous, |
2450 | | TypeIdAsTemplateArgument |
2451 | | }; |
2452 | | |
2453 | | |
2454 | | /// isTypeIdInParens - Assumes that a '(' was parsed and now we want to know |
2455 | | /// whether the parens contain an expression or a type-id. |
2456 | | /// Returns true for a type-id and false for an expression. |
2457 | 6.05M | bool isTypeIdInParens(bool &isAmbiguous) { |
2458 | 6.05M | if (getLangOpts().CPlusPlus) |
2459 | 1.36M | return isCXXTypeId(TypeIdInParens, isAmbiguous); |
2460 | 4.68M | isAmbiguous = false; |
2461 | 4.68M | return isTypeSpecifierQualifier(); |
2462 | 6.05M | } |
2463 | 39.0k | bool isTypeIdInParens() { |
2464 | 39.0k | bool isAmbiguous; |
2465 | 39.0k | return isTypeIdInParens(isAmbiguous); |
2466 | 39.0k | } |
2467 | | |
2468 | | /// Checks if the current tokens form type-id or expression. |
2469 | | /// It is similar to isTypeIdInParens but does not suppose that type-id |
2470 | | /// is in parenthesis. |
2471 | 222k | bool isTypeIdUnambiguously() { |
2472 | 222k | bool IsAmbiguous; |
2473 | 222k | if (getLangOpts().CPlusPlus) |
2474 | 221k | return isCXXTypeId(TypeIdUnambiguous, IsAmbiguous); |
2475 | 645 | return isTypeSpecifierQualifier(); |
2476 | 222k | } |
2477 | | |
2478 | | /// isCXXDeclarationStatement - C++-specialized function that disambiguates |
2479 | | /// between a declaration or an expression statement, when parsing function |
2480 | | /// bodies. Returns true for declaration, false for expression. |
2481 | | bool isCXXDeclarationStatement(); |
2482 | | |
2483 | | /// isCXXSimpleDeclaration - C++-specialized function that disambiguates |
2484 | | /// between a simple-declaration or an expression-statement. |
2485 | | /// If during the disambiguation process a parsing error is encountered, |
2486 | | /// the function returns true to let the declaration parsing code handle it. |
2487 | | /// Returns false if the statement is disambiguated as expression. |
2488 | | bool isCXXSimpleDeclaration(bool AllowForRangeDecl); |
2489 | | |
2490 | | /// isCXXFunctionDeclarator - Disambiguates between a function declarator or |
2491 | | /// a constructor-style initializer, when parsing declaration statements. |
2492 | | /// Returns true for function declarator and false for constructor-style |
2493 | | /// initializer. Sets 'IsAmbiguous' to true to indicate that this declaration |
2494 | | /// might be a constructor-style initializer. |
2495 | | /// If during the disambiguation process a parsing error is encountered, |
2496 | | /// the function returns true to let the declaration parsing code handle it. |
2497 | | bool isCXXFunctionDeclarator(bool *IsAmbiguous = nullptr); |
2498 | | |
2499 | | struct ConditionDeclarationOrInitStatementState; |
2500 | | enum class ConditionOrInitStatement { |
2501 | | Expression, ///< Disambiguated as an expression (either kind). |
2502 | | ConditionDecl, ///< Disambiguated as the declaration form of condition. |
2503 | | InitStmtDecl, ///< Disambiguated as a simple-declaration init-statement. |
2504 | | ForRangeDecl, ///< Disambiguated as a for-range declaration. |
2505 | | Error ///< Can't be any of the above! |
2506 | | }; |
2507 | | /// Disambiguates between the different kinds of things that can happen |
2508 | | /// after 'if (' or 'switch ('. This could be one of two different kinds of |
2509 | | /// declaration (depending on whether there is a ';' later) or an expression. |
2510 | | ConditionOrInitStatement |
2511 | | isCXXConditionDeclarationOrInitStatement(bool CanBeInitStmt, |
2512 | | bool CanBeForRangeDecl); |
2513 | | |
2514 | | bool isCXXTypeId(TentativeCXXTypeIdContext Context, bool &isAmbiguous); |
2515 | 5.77M | bool isCXXTypeId(TentativeCXXTypeIdContext Context) { |
2516 | 5.77M | bool isAmbiguous; |
2517 | 5.77M | return isCXXTypeId(Context, isAmbiguous); |
2518 | 5.77M | } |
2519 | | |
2520 | | /// TPResult - Used as the result value for functions whose purpose is to |
2521 | | /// disambiguate C++ constructs by "tentatively parsing" them. |
2522 | | enum class TPResult { |
2523 | | True, False, Ambiguous, Error |
2524 | | }; |
2525 | | |
2526 | | /// Determine whether we could have an enum-base. |
2527 | | /// |
2528 | | /// \p AllowSemi If \c true, then allow a ';' after the enum-base; otherwise |
2529 | | /// only consider this to be an enum-base if the next token is a '{'. |
2530 | | /// |
2531 | | /// \return \c false if this cannot possibly be an enum base; \c true |
2532 | | /// otherwise. |
2533 | | bool isEnumBase(bool AllowSemi); |
2534 | | |
2535 | | /// isCXXDeclarationSpecifier - Returns TPResult::True if it is a |
2536 | | /// declaration specifier, TPResult::False if it is not, |
2537 | | /// TPResult::Ambiguous if it could be either a decl-specifier or a |
2538 | | /// function-style cast, and TPResult::Error if a parsing error was |
2539 | | /// encountered. If it could be a braced C++11 function-style cast, returns |
2540 | | /// BracedCastResult. |
2541 | | /// Doesn't consume tokens. |
2542 | | TPResult |
2543 | | isCXXDeclarationSpecifier(TPResult BracedCastResult = TPResult::False, |
2544 | | bool *InvalidAsDeclSpec = nullptr); |
2545 | | |
2546 | | /// Given that isCXXDeclarationSpecifier returns \c TPResult::True or |
2547 | | /// \c TPResult::Ambiguous, determine whether the decl-specifier would be |
2548 | | /// a type-specifier other than a cv-qualifier. |
2549 | | bool isCXXDeclarationSpecifierAType(); |
2550 | | |
2551 | | /// Determine whether the current token sequence might be |
2552 | | /// '<' template-argument-list '>' |
2553 | | /// rather than a less-than expression. |
2554 | | TPResult isTemplateArgumentList(unsigned TokensToSkip); |
2555 | | |
2556 | | /// Determine whether an '(' after an 'explicit' keyword is part of a C++20 |
2557 | | /// 'explicit(bool)' declaration, in earlier language modes where that is an |
2558 | | /// extension. |
2559 | | TPResult isExplicitBool(); |
2560 | | |
2561 | | /// Determine whether an identifier has been tentatively declared as a |
2562 | | /// non-type. Such tentative declarations should not be found to name a type |
2563 | | /// during a tentative parse, but also should not be annotated as a non-type. |
2564 | | bool isTentativelyDeclared(IdentifierInfo *II); |
2565 | | |
2566 | | // "Tentative parsing" functions, used for disambiguation. If a parsing error |
2567 | | // is encountered they will return TPResult::Error. |
2568 | | // Returning TPResult::True/False indicates that the ambiguity was |
2569 | | // resolved and tentative parsing may stop. TPResult::Ambiguous indicates |
2570 | | // that more tentative parsing is necessary for disambiguation. |
2571 | | // They all consume tokens, so backtracking should be used after calling them. |
2572 | | |
2573 | | TPResult TryParseSimpleDeclaration(bool AllowForRangeDecl); |
2574 | | TPResult TryParseTypeofSpecifier(); |
2575 | | TPResult TryParseProtocolQualifiers(); |
2576 | | TPResult TryParsePtrOperatorSeq(); |
2577 | | TPResult TryParseOperatorId(); |
2578 | | TPResult TryParseInitDeclaratorList(); |
2579 | | TPResult TryParseDeclarator(bool mayBeAbstract, bool mayHaveIdentifier = true, |
2580 | | bool mayHaveDirectInit = false); |
2581 | | TPResult |
2582 | | TryParseParameterDeclarationClause(bool *InvalidAsDeclaration = nullptr, |
2583 | | bool VersusTemplateArg = false); |
2584 | | TPResult TryParseFunctionDeclarator(); |
2585 | | TPResult TryParseBracketDeclarator(); |
2586 | | TPResult TryConsumeDeclarationSpecifier(); |
2587 | | |
2588 | | /// Try to skip a possibly empty sequence of 'attribute-specifier's without |
2589 | | /// full validation of the syntactic structure of attributes. |
2590 | | bool TrySkipAttributes(); |
2591 | | |
2592 | | /// Diagnoses use of _ExtInt as being deprecated, and diagnoses use of |
2593 | | /// _BitInt as an extension when appropriate. |
2594 | | void DiagnoseBitIntUse(const Token &Tok); |
2595 | | |
2596 | | public: |
2597 | | TypeResult |
2598 | | ParseTypeName(SourceRange *Range = nullptr, |
2599 | | DeclaratorContext Context = DeclaratorContext::TypeName, |
2600 | | AccessSpecifier AS = AS_none, Decl **OwnedType = nullptr, |
2601 | | ParsedAttributes *Attrs = nullptr); |
2602 | | |
2603 | | private: |
2604 | | void ParseBlockId(SourceLocation CaretLoc); |
2605 | | |
2606 | | /// Are [[]] attributes enabled? |
2607 | 218M | bool standardAttributesAllowed() const { |
2608 | 218M | const LangOptions &LO = getLangOpts(); |
2609 | 218M | return LO.DoubleSquareBracketAttributes; |
2610 | 218M | } |
2611 | | |
2612 | | // Check for the start of an attribute-specifier-seq in a context where an |
2613 | | // attribute is not allowed. |
2614 | 636k | bool CheckProhibitedCXX11Attribute() { |
2615 | 636k | assert(Tok.is(tok::l_square)); |
2616 | 636k | if (!standardAttributesAllowed() || NextToken().isNot(tok::l_square)315k ) |
2617 | 636k | return false; |
2618 | 12 | return DiagnoseProhibitedCXX11Attribute(); |
2619 | 636k | } |
2620 | | |
2621 | | bool DiagnoseProhibitedCXX11Attribute(); |
2622 | | void CheckMisplacedCXX11Attribute(ParsedAttributes &Attrs, |
2623 | 797k | SourceLocation CorrectLocation) { |
2624 | 797k | if (!standardAttributesAllowed()) |
2625 | 4.59k | return; |
2626 | 793k | if ((Tok.isNot(tok::l_square) || NextToken().isNot(tok::l_square)19 ) && |
2627 | 793k | Tok.isNot(tok::kw_alignas)793k ) |
2628 | 793k | return; |
2629 | 24 | DiagnoseMisplacedCXX11Attribute(Attrs, CorrectLocation); |
2630 | 24 | } |
2631 | | void DiagnoseMisplacedCXX11Attribute(ParsedAttributes &Attrs, |
2632 | | SourceLocation CorrectLocation); |
2633 | | |
2634 | | void stripTypeAttributesOffDeclSpec(ParsedAttributes &Attrs, DeclSpec &DS, |
2635 | | Sema::TagUseKind TUK); |
2636 | | |
2637 | | // FixItLoc = possible correct location for the attributes |
2638 | | void ProhibitAttributes(ParsedAttributes &Attrs, |
2639 | 119M | SourceLocation FixItLoc = SourceLocation()) { |
2640 | 119M | if (Attrs.Range.isInvalid()) |
2641 | 119M | return; |
2642 | 118 | DiagnoseProhibitedAttributes(Attrs.Range, FixItLoc); |
2643 | 118 | Attrs.clear(); |
2644 | 118 | } |
2645 | | |
2646 | | void ProhibitAttributes(ParsedAttributesView &Attrs, |
2647 | 0 | SourceLocation FixItLoc = SourceLocation()) { |
2648 | 0 | if (Attrs.Range.isInvalid()) |
2649 | 0 | return; |
2650 | 0 | DiagnoseProhibitedAttributes(Attrs.Range, FixItLoc); |
2651 | 0 | Attrs.clearListOnly(); |
2652 | 0 | } |
2653 | | void DiagnoseProhibitedAttributes(const SourceRange &Range, |
2654 | | SourceLocation FixItLoc); |
2655 | | |
2656 | | // Forbid C++11 and C2x attributes that appear on certain syntactic locations |
2657 | | // which standard permits but we don't supported yet, for example, attributes |
2658 | | // appertain to decl specifiers. |
2659 | | // For the most cases we don't want to warn on unknown type attributes, but |
2660 | | // left them to later diagnoses. However, for a few cases like module |
2661 | | // declarations and module import declarations, we should do it. |
2662 | | void ProhibitCXX11Attributes(ParsedAttributes &Attrs, unsigned DiagID, |
2663 | | bool DiagnoseEmptyAttrs = false, |
2664 | | bool WarnOnUnknownAttrs = false); |
2665 | | |
2666 | | /// Skip C++11 and C2x attributes and return the end location of the |
2667 | | /// last one. |
2668 | | /// \returns SourceLocation() if there are no attributes. |
2669 | | SourceLocation SkipCXX11Attributes(); |
2670 | | |
2671 | | /// Diagnose and skip C++11 and C2x attributes that appear in syntactic |
2672 | | /// locations where attributes are not allowed. |
2673 | | void DiagnoseAndSkipCXX11Attributes(); |
2674 | | |
2675 | | /// Emit warnings for C++11 and C2x attributes that are in a position that |
2676 | | /// clang accepts as an extension. |
2677 | | void DiagnoseCXX11AttributeExtension(ParsedAttributes &Attrs); |
2678 | | |
2679 | | /// Parses syntax-generic attribute arguments for attributes which are |
2680 | | /// known to the implementation, and adds them to the given ParsedAttributes |
2681 | | /// list with the given attribute syntax. Returns the number of arguments |
2682 | | /// parsed for the attribute. |
2683 | | unsigned |
2684 | | ParseAttributeArgsCommon(IdentifierInfo *AttrName, SourceLocation AttrNameLoc, |
2685 | | ParsedAttributes &Attrs, SourceLocation *EndLoc, |
2686 | | IdentifierInfo *ScopeName, SourceLocation ScopeLoc, |
2687 | | ParsedAttr::Syntax Syntax); |
2688 | | |
2689 | | enum ParseAttrKindMask { |
2690 | | PAKM_GNU = 1 << 0, |
2691 | | PAKM_Declspec = 1 << 1, |
2692 | | PAKM_CXX11 = 1 << 2, |
2693 | | }; |
2694 | | |
2695 | | /// \brief Parse attributes based on what syntaxes are desired, allowing for |
2696 | | /// the order to vary. e.g. with PAKM_GNU | PAKM_Declspec: |
2697 | | /// __attribute__((...)) __declspec(...) __attribute__((...))) |
2698 | | /// Note that Microsoft attributes (spelled with single square brackets) are |
2699 | | /// not supported by this because of parsing ambiguities with other |
2700 | | /// constructs. |
2701 | | /// |
2702 | | /// There are some attribute parse orderings that should not be allowed in |
2703 | | /// arbitrary order. e.g., |
2704 | | /// |
2705 | | /// [[]] __attribute__(()) int i; // OK |
2706 | | /// __attribute__(()) [[]] int i; // Not OK |
2707 | | /// |
2708 | | /// Such situations should use the specific attribute parsing functionality. |
2709 | | void ParseAttributes(unsigned WhichAttrKinds, ParsedAttributes &Attrs, |
2710 | | LateParsedAttrList *LateAttrs = nullptr); |
2711 | | /// \brief Possibly parse attributes based on what syntaxes are desired, |
2712 | | /// allowing for the order to vary. |
2713 | | bool MaybeParseAttributes(unsigned WhichAttrKinds, ParsedAttributes &Attrs, |
2714 | 7.66M | LateParsedAttrList *LateAttrs = nullptr) { |
2715 | 7.66M | if (Tok.isOneOf(tok::kw___attribute, tok::kw___declspec) || |
2716 | 7.66M | (6.80M standardAttributesAllowed()6.80M && isCXX11AttributeSpecifier()2.89M )) { |
2717 | 866k | ParseAttributes(WhichAttrKinds, Attrs, LateAttrs); |
2718 | 866k | return true; |
2719 | 866k | } |
2720 | 6.79M | return false; |
2721 | 7.66M | } |
2722 | | |
2723 | | void MaybeParseGNUAttributes(Declarator &D, |
2724 | 119M | LateParsedAttrList *LateAttrs = nullptr) { |
2725 | 119M | if (Tok.is(tok::kw___attribute)) { |
2726 | 2.08M | ParsedAttributes Attrs(AttrFactory); |
2727 | 2.08M | ParseGNUAttributes(Attrs, LateAttrs, &D); |
2728 | 2.08M | D.takeAttributes(Attrs); |
2729 | 2.08M | } |
2730 | 119M | } |
2731 | | |
2732 | | bool MaybeParseGNUAttributes(ParsedAttributes &Attrs, |
2733 | 52.7M | LateParsedAttrList *LateAttrs = nullptr) { |
2734 | 52.7M | if (Tok.is(tok::kw___attribute)) { |
2735 | 23.6M | ParseGNUAttributes(Attrs, LateAttrs); |
2736 | 23.6M | return true; |
2737 | 23.6M | } |
2738 | 29.0M | return false; |
2739 | 52.7M | } |
2740 | | |
2741 | | void ParseGNUAttributes(ParsedAttributes &Attrs, |
2742 | | LateParsedAttrList *LateAttrs = nullptr, |
2743 | | Declarator *D = nullptr); |
2744 | | void ParseGNUAttributeArgs(IdentifierInfo *AttrName, |
2745 | | SourceLocation AttrNameLoc, |
2746 | | ParsedAttributes &Attrs, SourceLocation *EndLoc, |
2747 | | IdentifierInfo *ScopeName, SourceLocation ScopeLoc, |
2748 | | ParsedAttr::Syntax Syntax, Declarator *D); |
2749 | | IdentifierLoc *ParseIdentifierLoc(); |
2750 | | |
2751 | | unsigned |
2752 | | ParseClangAttributeArgs(IdentifierInfo *AttrName, SourceLocation AttrNameLoc, |
2753 | | ParsedAttributes &Attrs, SourceLocation *EndLoc, |
2754 | | IdentifierInfo *ScopeName, SourceLocation ScopeLoc, |
2755 | | ParsedAttr::Syntax Syntax); |
2756 | | |
2757 | 28.8k | void ReplayOpenMPAttributeTokens(CachedTokens &OpenMPTokens) { |
2758 | | // If parsing the attributes found an OpenMP directive, emit those tokens |
2759 | | // to the parse stream now. |
2760 | 28.8k | if (!OpenMPTokens.empty()) { |
2761 | 632 | PP.EnterToken(Tok, /*IsReinject*/ true); |
2762 | 632 | PP.EnterTokenStream(OpenMPTokens, /*DisableMacroExpansion*/ true, |
2763 | 632 | /*IsReinject*/ true); |
2764 | 632 | ConsumeAnyToken(/*ConsumeCodeCompletionTok*/ true); |
2765 | 632 | } |
2766 | 28.8k | } |
2767 | 44.6M | void MaybeParseCXX11Attributes(Declarator &D) { |
2768 | 44.6M | if (standardAttributesAllowed() && isCXX11AttributeSpecifier()18.7M ) { |
2769 | 323 | ParsedAttributes Attrs(AttrFactory); |
2770 | 323 | ParseCXX11Attributes(Attrs); |
2771 | 323 | D.takeAttributes(Attrs); |
2772 | 323 | } |
2773 | 44.6M | } |
2774 | | |
2775 | | bool MaybeParseCXX11Attributes(ParsedAttributes &Attrs, |
2776 | 127M | bool OuterMightBeMessageSend = false) { |
2777 | 127M | if (standardAttributesAllowed() && |
2778 | 127M | isCXX11AttributeSpecifier(false, OuterMightBeMessageSend)64.8M ) { |
2779 | 27.9k | ParseCXX11Attributes(Attrs); |
2780 | 27.9k | return true; |
2781 | 27.9k | } |
2782 | 127M | return false; |
2783 | 127M | } |
2784 | | |
2785 | | void ParseOpenMPAttributeArgs(IdentifierInfo *AttrName, |
2786 | | CachedTokens &OpenMPTokens); |
2787 | | |
2788 | | void ParseCXX11AttributeSpecifierInternal(ParsedAttributes &Attrs, |
2789 | | CachedTokens &OpenMPTokens, |
2790 | | SourceLocation *EndLoc = nullptr); |
2791 | | void ParseCXX11AttributeSpecifier(ParsedAttributes &Attrs, |
2792 | 28.7k | SourceLocation *EndLoc = nullptr) { |
2793 | 28.7k | CachedTokens OpenMPTokens; |
2794 | 28.7k | ParseCXX11AttributeSpecifierInternal(Attrs, OpenMPTokens, EndLoc); |
2795 | 28.7k | ReplayOpenMPAttributeTokens(OpenMPTokens); |
2796 | 28.7k | } |
2797 | | void ParseCXX11Attributes(ParsedAttributes &attrs); |
2798 | | /// Parses a C++11 (or C2x)-style attribute argument list. Returns true |
2799 | | /// if this results in adding an attribute to the ParsedAttributes list. |
2800 | | bool ParseCXX11AttributeArgs(IdentifierInfo *AttrName, |
2801 | | SourceLocation AttrNameLoc, |
2802 | | ParsedAttributes &Attrs, SourceLocation *EndLoc, |
2803 | | IdentifierInfo *ScopeName, |
2804 | | SourceLocation ScopeLoc, |
2805 | | CachedTokens &OpenMPTokens); |
2806 | | |
2807 | | IdentifierInfo *TryParseCXX11AttributeIdentifier( |
2808 | | SourceLocation &Loc, |
2809 | | Sema::AttributeCompletion Completion = Sema::AttributeCompletion::None, |
2810 | | const IdentifierInfo *EnclosingScope = nullptr); |
2811 | | |
2812 | | void MaybeParseHLSLSemantics(ParsedAttributes &Attrs, |
2813 | 65.3M | SourceLocation *EndLoc = nullptr) { |
2814 | 65.3M | if (getLangOpts().HLSL && Tok.is(tok::colon)28 ) |
2815 | 4 | ParseHLSLSemantics(Attrs, EndLoc); |
2816 | 65.3M | } |
2817 | | |
2818 | | void ParseHLSLSemantics(ParsedAttributes &Attrs, |
2819 | | SourceLocation *EndLoc = nullptr); |
2820 | | |
2821 | 103M | void MaybeParseMicrosoftAttributes(ParsedAttributes &Attrs) { |
2822 | 103M | if ((getLangOpts().MicrosoftExt || getLangOpts().HLSL102M ) && |
2823 | 103M | Tok.is(tok::l_square)346k ) { |
2824 | 145 | ParsedAttributes AttrsWithRange(AttrFactory); |
2825 | 145 | ParseMicrosoftAttributes(AttrsWithRange); |
2826 | 145 | Attrs.takeAllFrom(AttrsWithRange); |
2827 | 145 | } |
2828 | 103M | } |
2829 | | void ParseMicrosoftUuidAttributeArgs(ParsedAttributes &Attrs); |
2830 | | void ParseMicrosoftAttributes(ParsedAttributes &Attrs); |
2831 | 46.0M | bool MaybeParseMicrosoftDeclSpecs(ParsedAttributes &Attrs) { |
2832 | 46.0M | if (getLangOpts().DeclSpecKeyword && Tok.is(tok::kw___declspec)181k ) { |
2833 | 11.4k | ParseMicrosoftDeclSpecs(Attrs); |
2834 | 11.4k | return true; |
2835 | 11.4k | } |
2836 | 46.0M | return false; |
2837 | 46.0M | } |
2838 | | void ParseMicrosoftDeclSpecs(ParsedAttributes &Attrs); |
2839 | | bool ParseMicrosoftDeclSpecArgs(IdentifierInfo *AttrName, |
2840 | | SourceLocation AttrNameLoc, |
2841 | | ParsedAttributes &Attrs); |
2842 | | void ParseMicrosoftTypeAttributes(ParsedAttributes &attrs); |
2843 | | void DiagnoseAndSkipExtendedMicrosoftTypeAttributes(); |
2844 | | SourceLocation SkipExtendedMicrosoftTypeAttributes(); |
2845 | | void ParseMicrosoftInheritanceClassAttributes(ParsedAttributes &attrs); |
2846 | | void ParseBorlandTypeAttributes(ParsedAttributes &attrs); |
2847 | | void ParseOpenCLKernelAttributes(ParsedAttributes &attrs); |
2848 | | void ParseOpenCLQualifiers(ParsedAttributes &Attrs); |
2849 | | void ParseNullabilityTypeSpecifiers(ParsedAttributes &attrs); |
2850 | | void ParseCUDAFunctionAttributes(ParsedAttributes &attrs); |
2851 | | |
2852 | | VersionTuple ParseVersionTuple(SourceRange &Range); |
2853 | | void ParseAvailabilityAttribute(IdentifierInfo &Availability, |
2854 | | SourceLocation AvailabilityLoc, |
2855 | | ParsedAttributes &attrs, |
2856 | | SourceLocation *endLoc, |
2857 | | IdentifierInfo *ScopeName, |
2858 | | SourceLocation ScopeLoc, |
2859 | | ParsedAttr::Syntax Syntax); |
2860 | | |
2861 | | Optional<AvailabilitySpec> ParseAvailabilitySpec(); |
2862 | | ExprResult ParseAvailabilityCheckExpr(SourceLocation StartLoc); |
2863 | | |
2864 | | void ParseExternalSourceSymbolAttribute(IdentifierInfo &ExternalSourceSymbol, |
2865 | | SourceLocation Loc, |
2866 | | ParsedAttributes &Attrs, |
2867 | | SourceLocation *EndLoc, |
2868 | | IdentifierInfo *ScopeName, |
2869 | | SourceLocation ScopeLoc, |
2870 | | ParsedAttr::Syntax Syntax); |
2871 | | |
2872 | | void ParseObjCBridgeRelatedAttribute(IdentifierInfo &ObjCBridgeRelated, |
2873 | | SourceLocation ObjCBridgeRelatedLoc, |
2874 | | ParsedAttributes &Attrs, |
2875 | | SourceLocation *EndLoc, |
2876 | | IdentifierInfo *ScopeName, |
2877 | | SourceLocation ScopeLoc, |
2878 | | ParsedAttr::Syntax Syntax); |
2879 | | |
2880 | | void ParseSwiftNewTypeAttribute(IdentifierInfo &AttrName, |
2881 | | SourceLocation AttrNameLoc, |
2882 | | ParsedAttributes &Attrs, |
2883 | | SourceLocation *EndLoc, |
2884 | | IdentifierInfo *ScopeName, |
2885 | | SourceLocation ScopeLoc, |
2886 | | ParsedAttr::Syntax Syntax); |
2887 | | |
2888 | | void ParseTypeTagForDatatypeAttribute(IdentifierInfo &AttrName, |
2889 | | SourceLocation AttrNameLoc, |
2890 | | ParsedAttributes &Attrs, |
2891 | | SourceLocation *EndLoc, |
2892 | | IdentifierInfo *ScopeName, |
2893 | | SourceLocation ScopeLoc, |
2894 | | ParsedAttr::Syntax Syntax); |
2895 | | |
2896 | | void ParseAttributeWithTypeArg(IdentifierInfo &AttrName, |
2897 | | SourceLocation AttrNameLoc, |
2898 | | ParsedAttributes &Attrs, |
2899 | | IdentifierInfo *ScopeName, |
2900 | | SourceLocation ScopeLoc, |
2901 | | ParsedAttr::Syntax Syntax); |
2902 | | |
2903 | | void ParseTypeofSpecifier(DeclSpec &DS); |
2904 | | SourceLocation ParseDecltypeSpecifier(DeclSpec &DS); |
2905 | | void AnnotateExistingDecltypeSpecifier(const DeclSpec &DS, |
2906 | | SourceLocation StartLoc, |
2907 | | SourceLocation EndLoc); |
2908 | | void ParseUnderlyingTypeSpecifier(DeclSpec &DS); |
2909 | | void ParseAtomicSpecifier(DeclSpec &DS); |
2910 | | |
2911 | | ExprResult ParseAlignArgument(SourceLocation Start, |
2912 | | SourceLocation &EllipsisLoc); |
2913 | | void ParseAlignmentSpecifier(ParsedAttributes &Attrs, |
2914 | | SourceLocation *endLoc = nullptr); |
2915 | | ExprResult ParseExtIntegerArgument(); |
2916 | | |
2917 | | VirtSpecifiers::Specifier isCXX11VirtSpecifier(const Token &Tok) const; |
2918 | 30.5M | VirtSpecifiers::Specifier isCXX11VirtSpecifier() const { |
2919 | 30.5M | return isCXX11VirtSpecifier(Tok); |
2920 | 30.5M | } |
2921 | | void ParseOptionalCXX11VirtSpecifierSeq(VirtSpecifiers &VS, bool IsInterface, |
2922 | | SourceLocation FriendLoc); |
2923 | | |
2924 | | bool isCXX11FinalKeyword() const; |
2925 | | bool isClassCompatibleKeyword() const; |
2926 | | |
2927 | | /// DeclaratorScopeObj - RAII object used in Parser::ParseDirectDeclarator to |
2928 | | /// enter a new C++ declarator scope and exit it when the function is |
2929 | | /// finished. |
2930 | | class DeclaratorScopeObj { |
2931 | | Parser &P; |
2932 | | CXXScopeSpec &SS; |
2933 | | bool EnteredScope; |
2934 | | bool CreatedScope; |
2935 | | public: |
2936 | | DeclaratorScopeObj(Parser &p, CXXScopeSpec &ss) |
2937 | 111M | : P(p), SS(ss), EnteredScope(false), CreatedScope(false) {} |
2938 | | |
2939 | 344k | void EnterDeclaratorScope() { |
2940 | 344k | assert(!EnteredScope && "Already entered the scope!"); |
2941 | 0 | assert(SS.isSet() && "C++ scope was not set!"); |
2942 | | |
2943 | 0 | CreatedScope = true; |
2944 | 344k | P.EnterScope(0); // Not a decl scope. |
2945 | | |
2946 | 344k | if (!P.Actions.ActOnCXXEnterDeclaratorScope(P.getCurScope(), SS)) |
2947 | 344k | EnteredScope = true; |
2948 | 344k | } |
2949 | | |
2950 | 111M | ~DeclaratorScopeObj() { |
2951 | 111M | if (EnteredScope) { |
2952 | 344k | assert(SS.isSet() && "C++ scope was cleared ?"); |
2953 | 0 | P.Actions.ActOnCXXExitDeclaratorScope(P.getCurScope(), SS); |
2954 | 344k | } |
2955 | 111M | if (CreatedScope) |
2956 | 344k | P.ExitScope(); |
2957 | 111M | } |
2958 | | }; |
2959 | | |
2960 | | /// ParseDeclarator - Parse and verify a newly-initialized declarator. |
2961 | | void ParseDeclarator(Declarator &D); |
2962 | | /// A function that parses a variant of direct-declarator. |
2963 | | typedef void (Parser::*DirectDeclParseFunction)(Declarator&); |
2964 | | void ParseDeclaratorInternal(Declarator &D, |
2965 | | DirectDeclParseFunction DirectDeclParser); |
2966 | | |
2967 | | enum AttrRequirements { |
2968 | | AR_NoAttributesParsed = 0, ///< No attributes are diagnosed. |
2969 | | AR_GNUAttributesParsedAndRejected = 1 << 0, ///< Diagnose GNU attributes. |
2970 | | AR_GNUAttributesParsed = 1 << 1, |
2971 | | AR_CXX11AttributesParsed = 1 << 2, |
2972 | | AR_DeclspecAttributesParsed = 1 << 3, |
2973 | | AR_AllAttributesParsed = AR_GNUAttributesParsed | |
2974 | | AR_CXX11AttributesParsed | |
2975 | | AR_DeclspecAttributesParsed, |
2976 | | AR_VendorAttributesParsed = AR_GNUAttributesParsed | |
2977 | | AR_DeclspecAttributesParsed |
2978 | | }; |
2979 | | |
2980 | | void ParseTypeQualifierListOpt( |
2981 | | DeclSpec &DS, unsigned AttrReqs = AR_AllAttributesParsed, |
2982 | | bool AtomicAllowed = true, bool IdentifierRequired = false, |
2983 | | Optional<llvm::function_ref<void()>> CodeCompletionHandler = None); |
2984 | | void ParseDirectDeclarator(Declarator &D); |
2985 | | void ParseDecompositionDeclarator(Declarator &D); |
2986 | | void ParseParenDeclarator(Declarator &D); |
2987 | | void ParseFunctionDeclarator(Declarator &D, ParsedAttributes &FirstArgAttrs, |
2988 | | BalancedDelimiterTracker &Tracker, |
2989 | | bool IsAmbiguous, bool RequiresArg = false); |
2990 | | void InitCXXThisScopeForDeclaratorIfRelevant( |
2991 | | const Declarator &D, const DeclSpec &DS, |
2992 | | llvm::Optional<Sema::CXXThisScopeRAII> &ThisScope); |
2993 | | bool ParseRefQualifier(bool &RefQualifierIsLValueRef, |
2994 | | SourceLocation &RefQualifierLoc); |
2995 | | bool isFunctionDeclaratorIdentifierList(); |
2996 | | void ParseFunctionDeclaratorIdentifierList( |
2997 | | Declarator &D, |
2998 | | SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo); |
2999 | | void ParseParameterDeclarationClause( |
3000 | | DeclaratorContext DeclaratorContext, |
3001 | | ParsedAttributes &attrs, |
3002 | | SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo, |
3003 | | SourceLocation &EllipsisLoc); |
3004 | | void ParseBracketDeclarator(Declarator &D); |
3005 | | void ParseMisplacedBracketDeclarator(Declarator &D); |
3006 | | |
3007 | | //===--------------------------------------------------------------------===// |
3008 | | // C++ 7: Declarations [dcl.dcl] |
3009 | | |
3010 | | /// The kind of attribute specifier we have found. |
3011 | | enum CXX11AttributeKind { |
3012 | | /// This is not an attribute specifier. |
3013 | | CAK_NotAttributeSpecifier, |
3014 | | /// This should be treated as an attribute-specifier. |
3015 | | CAK_AttributeSpecifier, |
3016 | | /// The next tokens are '[[', but this is not an attribute-specifier. This |
3017 | | /// is ill-formed by C++11 [dcl.attr.grammar]p6. |
3018 | | CAK_InvalidAttributeSpecifier |
3019 | | }; |
3020 | | CXX11AttributeKind |
3021 | | isCXX11AttributeSpecifier(bool Disambiguate = false, |
3022 | | bool OuterMightBeMessageSend = false); |
3023 | | |
3024 | | void DiagnoseUnexpectedNamespace(NamedDecl *Context); |
3025 | | |
3026 | | DeclGroupPtrTy ParseNamespace(DeclaratorContext Context, |
3027 | | SourceLocation &DeclEnd, |
3028 | | SourceLocation InlineLoc = SourceLocation()); |
3029 | | |
3030 | | struct InnerNamespaceInfo { |
3031 | | SourceLocation NamespaceLoc; |
3032 | | SourceLocation InlineLoc; |
3033 | | SourceLocation IdentLoc; |
3034 | | IdentifierInfo *Ident; |
3035 | | }; |
3036 | | using InnerNamespaceInfoList = llvm::SmallVector<InnerNamespaceInfo, 4>; |
3037 | | |
3038 | | void ParseInnerNamespace(const InnerNamespaceInfoList &InnerNSs, |
3039 | | unsigned int index, SourceLocation &InlineLoc, |
3040 | | ParsedAttributes &attrs, |
3041 | | BalancedDelimiterTracker &Tracker); |
3042 | | Decl *ParseLinkage(ParsingDeclSpec &DS, DeclaratorContext Context); |
3043 | | Decl *ParseExportDeclaration(); |
3044 | | DeclGroupPtrTy ParseUsingDirectiveOrDeclaration( |
3045 | | DeclaratorContext Context, const ParsedTemplateInfo &TemplateInfo, |
3046 | | SourceLocation &DeclEnd, ParsedAttributes &Attrs); |
3047 | | Decl *ParseUsingDirective(DeclaratorContext Context, |
3048 | | SourceLocation UsingLoc, |
3049 | | SourceLocation &DeclEnd, |
3050 | | ParsedAttributes &attrs); |
3051 | | |
3052 | | struct UsingDeclarator { |
3053 | | SourceLocation TypenameLoc; |
3054 | | CXXScopeSpec SS; |
3055 | | UnqualifiedId Name; |
3056 | | SourceLocation EllipsisLoc; |
3057 | | |
3058 | 355k | void clear() { |
3059 | 355k | TypenameLoc = EllipsisLoc = SourceLocation(); |
3060 | 355k | SS.clear(); |
3061 | 355k | Name.clear(); |
3062 | 355k | } |
3063 | | }; |
3064 | | |
3065 | | bool ParseUsingDeclarator(DeclaratorContext Context, UsingDeclarator &D); |
3066 | | DeclGroupPtrTy ParseUsingDeclaration(DeclaratorContext Context, |
3067 | | const ParsedTemplateInfo &TemplateInfo, |
3068 | | SourceLocation UsingLoc, |
3069 | | SourceLocation &DeclEnd, |
3070 | | ParsedAttributes &Attrs, |
3071 | | AccessSpecifier AS = AS_none); |
3072 | | Decl *ParseAliasDeclarationAfterDeclarator( |
3073 | | const ParsedTemplateInfo &TemplateInfo, SourceLocation UsingLoc, |
3074 | | UsingDeclarator &D, SourceLocation &DeclEnd, AccessSpecifier AS, |
3075 | | ParsedAttributes &Attrs, Decl **OwnedType = nullptr); |
3076 | | |
3077 | | Decl *ParseStaticAssertDeclaration(SourceLocation &DeclEnd); |
3078 | | Decl *ParseNamespaceAlias(SourceLocation NamespaceLoc, |
3079 | | SourceLocation AliasLoc, IdentifierInfo *Alias, |
3080 | | SourceLocation &DeclEnd); |
3081 | | |
3082 | | //===--------------------------------------------------------------------===// |
3083 | | // C++ 9: classes [class] and C structs/unions. |
3084 | | bool isValidAfterTypeSpecifier(bool CouldBeBitfield); |
3085 | | void ParseClassSpecifier(tok::TokenKind TagTokKind, SourceLocation TagLoc, |
3086 | | DeclSpec &DS, const ParsedTemplateInfo &TemplateInfo, |
3087 | | AccessSpecifier AS, bool EnteringContext, |
3088 | | DeclSpecContext DSC, ParsedAttributes &Attributes); |
3089 | | void SkipCXXMemberSpecification(SourceLocation StartLoc, |
3090 | | SourceLocation AttrFixitLoc, |
3091 | | unsigned TagType, |
3092 | | Decl *TagDecl); |
3093 | | void ParseCXXMemberSpecification(SourceLocation StartLoc, |
3094 | | SourceLocation AttrFixitLoc, |
3095 | | ParsedAttributes &Attrs, unsigned TagType, |
3096 | | Decl *TagDecl); |
3097 | | ExprResult ParseCXXMemberInitializer(Decl *D, bool IsFunction, |
3098 | | SourceLocation &EqualLoc); |
3099 | | bool |
3100 | | ParseCXXMemberDeclaratorBeforeInitializer(Declarator &DeclaratorInfo, |
3101 | | VirtSpecifiers &VS, |
3102 | | ExprResult &BitfieldSize, |
3103 | | LateParsedAttrList &LateAttrs); |
3104 | | void MaybeParseAndDiagnoseDeclSpecAfterCXX11VirtSpecifierSeq(Declarator &D, |
3105 | | VirtSpecifiers &VS); |
3106 | | DeclGroupPtrTy ParseCXXClassMemberDeclaration( |
3107 | | AccessSpecifier AS, ParsedAttributes &Attr, |
3108 | | const ParsedTemplateInfo &TemplateInfo = ParsedTemplateInfo(), |
3109 | | ParsingDeclRAIIObject *DiagsFromTParams = nullptr); |
3110 | | DeclGroupPtrTy |
3111 | | ParseCXXClassMemberDeclarationWithPragmas(AccessSpecifier &AS, |
3112 | | ParsedAttributes &AccessAttrs, |
3113 | | DeclSpec::TST TagType, Decl *Tag); |
3114 | | void ParseConstructorInitializer(Decl *ConstructorDecl); |
3115 | | MemInitResult ParseMemInitializer(Decl *ConstructorDecl); |
3116 | | void HandleMemberFunctionDeclDelays(Declarator& DeclaratorInfo, |
3117 | | Decl *ThisDecl); |
3118 | | |
3119 | | //===--------------------------------------------------------------------===// |
3120 | | // C++ 10: Derived classes [class.derived] |
3121 | | TypeResult ParseBaseTypeSpecifier(SourceLocation &BaseLoc, |
3122 | | SourceLocation &EndLocation); |
3123 | | void ParseBaseClause(Decl *ClassDecl); |
3124 | | BaseResult ParseBaseSpecifier(Decl *ClassDecl); |
3125 | | AccessSpecifier getAccessSpecifierIfPresent() const; |
3126 | | |
3127 | | bool ParseUnqualifiedIdTemplateId(CXXScopeSpec &SS, |
3128 | | ParsedType ObjectType, |
3129 | | bool ObjectHadErrors, |
3130 | | SourceLocation TemplateKWLoc, |
3131 | | IdentifierInfo *Name, |
3132 | | SourceLocation NameLoc, |
3133 | | bool EnteringContext, |
3134 | | UnqualifiedId &Id, |
3135 | | bool AssumeTemplateId); |
3136 | | bool ParseUnqualifiedIdOperator(CXXScopeSpec &SS, bool EnteringContext, |
3137 | | ParsedType ObjectType, |
3138 | | UnqualifiedId &Result); |
3139 | | |
3140 | | //===--------------------------------------------------------------------===// |
3141 | | // OpenMP: Directives and clauses. |
3142 | | /// Parse clauses for '#pragma omp declare simd'. |
3143 | | DeclGroupPtrTy ParseOMPDeclareSimdClauses(DeclGroupPtrTy Ptr, |
3144 | | CachedTokens &Toks, |
3145 | | SourceLocation Loc); |
3146 | | |
3147 | | /// Parse a property kind into \p TIProperty for the selector set \p Set and |
3148 | | /// selector \p Selector. |
3149 | | void parseOMPTraitPropertyKind(OMPTraitProperty &TIProperty, |
3150 | | llvm::omp::TraitSet Set, |
3151 | | llvm::omp::TraitSelector Selector, |
3152 | | llvm::StringMap<SourceLocation> &Seen); |
3153 | | |
3154 | | /// Parse a selector kind into \p TISelector for the selector set \p Set. |
3155 | | void parseOMPTraitSelectorKind(OMPTraitSelector &TISelector, |
3156 | | llvm::omp::TraitSet Set, |
3157 | | llvm::StringMap<SourceLocation> &Seen); |
3158 | | |
3159 | | /// Parse a selector set kind into \p TISet. |
3160 | | void parseOMPTraitSetKind(OMPTraitSet &TISet, |
3161 | | llvm::StringMap<SourceLocation> &Seen); |
3162 | | |
3163 | | /// Parses an OpenMP context property. |
3164 | | void parseOMPContextProperty(OMPTraitSelector &TISelector, |
3165 | | llvm::omp::TraitSet Set, |
3166 | | llvm::StringMap<SourceLocation> &Seen); |
3167 | | |
3168 | | /// Parses an OpenMP context selector. |
3169 | | void parseOMPContextSelector(OMPTraitSelector &TISelector, |
3170 | | llvm::omp::TraitSet Set, |
3171 | | llvm::StringMap<SourceLocation> &SeenSelectors); |
3172 | | |
3173 | | /// Parses an OpenMP context selector set. |
3174 | | void parseOMPContextSelectorSet(OMPTraitSet &TISet, |
3175 | | llvm::StringMap<SourceLocation> &SeenSets); |
3176 | | |
3177 | | /// Parses OpenMP context selectors. |
3178 | | bool parseOMPContextSelectors(SourceLocation Loc, OMPTraitInfo &TI); |
3179 | | |
3180 | | /// Parse an 'append_args' clause for '#pragma omp declare variant'. |
3181 | | bool parseOpenMPAppendArgs( |
3182 | | SmallVectorImpl<OMPDeclareVariantAttr::InteropType> &InterOpTypes); |
3183 | | |
3184 | | /// Parse a `match` clause for an '#pragma omp declare variant'. Return true |
3185 | | /// if there was an error. |
3186 | | bool parseOMPDeclareVariantMatchClause(SourceLocation Loc, OMPTraitInfo &TI, |
3187 | | OMPTraitInfo *ParentTI); |
3188 | | |
3189 | | /// Parse clauses for '#pragma omp declare variant'. |
3190 | | void ParseOMPDeclareVariantClauses(DeclGroupPtrTy Ptr, CachedTokens &Toks, |
3191 | | SourceLocation Loc); |
3192 | | |
3193 | | /// Parse 'omp [begin] assume[s]' directive. |
3194 | | void ParseOpenMPAssumesDirective(OpenMPDirectiveKind DKind, |
3195 | | SourceLocation Loc); |
3196 | | |
3197 | | /// Parse 'omp end assumes' directive. |
3198 | | void ParseOpenMPEndAssumesDirective(SourceLocation Loc); |
3199 | | |
3200 | | /// Parse clauses for '#pragma omp [begin] declare target'. |
3201 | | void ParseOMPDeclareTargetClauses(Sema::DeclareTargetContextInfo &DTCI); |
3202 | | |
3203 | | /// Parse '#pragma omp end declare target'. |
3204 | | void ParseOMPEndDeclareTargetDirective(OpenMPDirectiveKind BeginDKind, |
3205 | | OpenMPDirectiveKind EndDKind, |
3206 | | SourceLocation Loc); |
3207 | | |
3208 | | /// Skip tokens until a `annot_pragma_openmp_end` was found. Emit a warning if |
3209 | | /// it is not the current token. |
3210 | | void skipUntilPragmaOpenMPEnd(OpenMPDirectiveKind DKind); |
3211 | | |
3212 | | /// Check the \p FoundKind against the \p ExpectedKind, if not issue an error |
3213 | | /// that the "end" matching the "begin" directive of kind \p BeginKind was not |
3214 | | /// found. Finally, if the expected kind was found or if \p SkipUntilOpenMPEnd |
3215 | | /// is set, skip ahead using the helper `skipUntilPragmaOpenMPEnd`. |
3216 | | void parseOMPEndDirective(OpenMPDirectiveKind BeginKind, |
3217 | | OpenMPDirectiveKind ExpectedKind, |
3218 | | OpenMPDirectiveKind FoundKind, |
3219 | | SourceLocation MatchingLoc, |
3220 | | SourceLocation FoundLoc, |
3221 | | bool SkipUntilOpenMPEnd); |
3222 | | |
3223 | | /// Parses declarative OpenMP directives. |
3224 | | DeclGroupPtrTy ParseOpenMPDeclarativeDirectiveWithExtDecl( |
3225 | | AccessSpecifier &AS, ParsedAttributes &Attrs, bool Delayed = false, |
3226 | | DeclSpec::TST TagType = DeclSpec::TST_unspecified, |
3227 | | Decl *TagDecl = nullptr); |
3228 | | /// Parse 'omp declare reduction' construct. |
3229 | | DeclGroupPtrTy ParseOpenMPDeclareReductionDirective(AccessSpecifier AS); |
3230 | | /// Parses initializer for provided omp_priv declaration inside the reduction |
3231 | | /// initializer. |
3232 | | void ParseOpenMPReductionInitializerForDecl(VarDecl *OmpPrivParm); |
3233 | | |
3234 | | /// Parses 'omp declare mapper' directive. |
3235 | | DeclGroupPtrTy ParseOpenMPDeclareMapperDirective(AccessSpecifier AS); |
3236 | | /// Parses variable declaration in 'omp declare mapper' directive. |
3237 | | TypeResult parseOpenMPDeclareMapperVarDecl(SourceRange &Range, |
3238 | | DeclarationName &Name, |
3239 | | AccessSpecifier AS = AS_none); |
3240 | | |
3241 | | /// Tries to parse cast part of OpenMP array shaping operation: |
3242 | | /// '[' expression ']' { '[' expression ']' } ')'. |
3243 | | bool tryParseOpenMPArrayShapingCastPart(); |
3244 | | |
3245 | | /// Parses simple list of variables. |
3246 | | /// |
3247 | | /// \param Kind Kind of the directive. |
3248 | | /// \param Callback Callback function to be called for the list elements. |
3249 | | /// \param AllowScopeSpecifier true, if the variables can have fully |
3250 | | /// qualified names. |
3251 | | /// |
3252 | | bool ParseOpenMPSimpleVarList( |
3253 | | OpenMPDirectiveKind Kind, |
3254 | | const llvm::function_ref<void(CXXScopeSpec &, DeclarationNameInfo)> & |
3255 | | Callback, |
3256 | | bool AllowScopeSpecifier); |
3257 | | /// Parses declarative or executable directive. |
3258 | | /// |
3259 | | /// \param StmtCtx The context in which we're parsing the directive. |
3260 | | /// \param ReadDirectiveWithinMetadirective true if directive is within a |
3261 | | /// metadirective and therefore ends on the closing paren. |
3262 | | StmtResult ParseOpenMPDeclarativeOrExecutableDirective( |
3263 | | ParsedStmtContext StmtCtx, bool ReadDirectiveWithinMetadirective = false); |
3264 | | /// Parses clause of kind \a CKind for directive of a kind \a Kind. |
3265 | | /// |
3266 | | /// \param DKind Kind of current directive. |
3267 | | /// \param CKind Kind of current clause. |
3268 | | /// \param FirstClause true, if this is the first clause of a kind \a CKind |
3269 | | /// in current directive. |
3270 | | /// |
3271 | | OMPClause *ParseOpenMPClause(OpenMPDirectiveKind DKind, |
3272 | | OpenMPClauseKind CKind, bool FirstClause); |
3273 | | /// Parses clause with a single expression of a kind \a Kind. |
3274 | | /// |
3275 | | /// \param Kind Kind of current clause. |
3276 | | /// \param ParseOnly true to skip the clause's semantic actions and return |
3277 | | /// nullptr. |
3278 | | /// |
3279 | | OMPClause *ParseOpenMPSingleExprClause(OpenMPClauseKind Kind, |
3280 | | bool ParseOnly); |
3281 | | /// Parses simple clause of a kind \a Kind. |
3282 | | /// |
3283 | | /// \param Kind Kind of current clause. |
3284 | | /// \param ParseOnly true to skip the clause's semantic actions and return |
3285 | | /// nullptr. |
3286 | | /// |
3287 | | OMPClause *ParseOpenMPSimpleClause(OpenMPClauseKind Kind, bool ParseOnly); |
3288 | | /// Parses indirect clause |
3289 | | /// \param ParseOnly true to skip the clause's semantic actions and return |
3290 | | // false; |
3291 | | bool ParseOpenMPIndirectClause(Sema::DeclareTargetContextInfo &DTCI, |
3292 | | bool ParseOnly); |
3293 | | /// Parses clause with a single expression and an additional argument |
3294 | | /// of a kind \a Kind. |
3295 | | /// |
3296 | | /// \param DKind Directive kind. |
3297 | | /// \param Kind Kind of current clause. |
3298 | | /// \param ParseOnly true to skip the clause's semantic actions and return |
3299 | | /// nullptr. |
3300 | | /// |
3301 | | OMPClause *ParseOpenMPSingleExprWithArgClause(OpenMPDirectiveKind DKind, |
3302 | | OpenMPClauseKind Kind, |
3303 | | bool ParseOnly); |
3304 | | |
3305 | | /// Parses the 'sizes' clause of a '#pragma omp tile' directive. |
3306 | | OMPClause *ParseOpenMPSizesClause(); |
3307 | | |
3308 | | /// Parses clause without any additional arguments. |
3309 | | /// |
3310 | | /// \param Kind Kind of current clause. |
3311 | | /// \param ParseOnly true to skip the clause's semantic actions and return |
3312 | | /// nullptr. |
3313 | | /// |
3314 | | OMPClause *ParseOpenMPClause(OpenMPClauseKind Kind, bool ParseOnly = false); |
3315 | | /// Parses clause with the list of variables of a kind \a Kind. |
3316 | | /// |
3317 | | /// \param Kind Kind of current clause. |
3318 | | /// \param ParseOnly true to skip the clause's semantic actions and return |
3319 | | /// nullptr. |
3320 | | /// |
3321 | | OMPClause *ParseOpenMPVarListClause(OpenMPDirectiveKind DKind, |
3322 | | OpenMPClauseKind Kind, bool ParseOnly); |
3323 | | |
3324 | | /// Parses and creates OpenMP 5.0 iterators expression: |
3325 | | /// <iterators> = 'iterator' '(' { [ <iterator-type> ] identifier = |
3326 | | /// <range-specification> }+ ')' |
3327 | | ExprResult ParseOpenMPIteratorsExpr(); |
3328 | | |
3329 | | /// Parses allocators and traits in the context of the uses_allocator clause. |
3330 | | /// Expected format: |
3331 | | /// '(' { <allocator> [ '(' <allocator_traits> ')' ] }+ ')' |
3332 | | OMPClause *ParseOpenMPUsesAllocatorClause(OpenMPDirectiveKind DKind); |
3333 | | |
3334 | | /// Parses clause with an interop variable of kind \a Kind. |
3335 | | /// |
3336 | | /// \param Kind Kind of current clause. |
3337 | | /// \param ParseOnly true to skip the clause's semantic actions and return |
3338 | | /// nullptr. |
3339 | | // |
3340 | | OMPClause *ParseOpenMPInteropClause(OpenMPClauseKind Kind, bool ParseOnly); |
3341 | | |
3342 | | public: |
3343 | | /// Parses simple expression in parens for single-expression clauses of OpenMP |
3344 | | /// constructs. |
3345 | | /// \param RLoc Returned location of right paren. |
3346 | | ExprResult ParseOpenMPParensExpr(StringRef ClauseName, SourceLocation &RLoc, |
3347 | | bool IsAddressOfOperand = false); |
3348 | | |
3349 | | /// Parses a reserved locator like 'omp_all_memory'. |
3350 | | bool ParseOpenMPReservedLocator(OpenMPClauseKind Kind, |
3351 | | Sema::OpenMPVarListDataTy &Data, |
3352 | | const LangOptions &LangOpts); |
3353 | | /// Parses clauses with list. |
3354 | | bool ParseOpenMPVarList(OpenMPDirectiveKind DKind, OpenMPClauseKind Kind, |
3355 | | SmallVectorImpl<Expr *> &Vars, |
3356 | | Sema::OpenMPVarListDataTy &Data); |
3357 | | bool ParseUnqualifiedId(CXXScopeSpec &SS, ParsedType ObjectType, |
3358 | | bool ObjectHadErrors, bool EnteringContext, |
3359 | | bool AllowDestructorName, bool AllowConstructorName, |
3360 | | bool AllowDeductionGuide, |
3361 | | SourceLocation *TemplateKWLoc, UnqualifiedId &Result); |
3362 | | |
3363 | | /// Parses the mapper modifier in map, to, and from clauses. |
3364 | | bool parseMapperModifier(Sema::OpenMPVarListDataTy &Data); |
3365 | | /// Parses map-type-modifiers in map clause. |
3366 | | /// map([ [map-type-modifier[,] [map-type-modifier[,] ...] map-type : ] list) |
3367 | | /// where, map-type-modifier ::= always | close | mapper(mapper-identifier) |
3368 | | bool parseMapTypeModifiers(Sema::OpenMPVarListDataTy &Data); |
3369 | | |
3370 | | private: |
3371 | | //===--------------------------------------------------------------------===// |
3372 | | // C++ 14: Templates [temp] |
3373 | | |
3374 | | // C++ 14.1: Template Parameters [temp.param] |
3375 | | Decl *ParseDeclarationStartingWithTemplate(DeclaratorContext Context, |
3376 | | SourceLocation &DeclEnd, |
3377 | | ParsedAttributes &AccessAttrs, |
3378 | | AccessSpecifier AS = AS_none); |
3379 | | Decl *ParseTemplateDeclarationOrSpecialization(DeclaratorContext Context, |
3380 | | SourceLocation &DeclEnd, |
3381 | | ParsedAttributes &AccessAttrs, |
3382 | | AccessSpecifier AS); |
3383 | | Decl *ParseSingleDeclarationAfterTemplate( |
3384 | | DeclaratorContext Context, const ParsedTemplateInfo &TemplateInfo, |
3385 | | ParsingDeclRAIIObject &DiagsFromParams, SourceLocation &DeclEnd, |
3386 | | ParsedAttributes &AccessAttrs, AccessSpecifier AS = AS_none); |
3387 | | bool ParseTemplateParameters(MultiParseScope &TemplateScopes, unsigned Depth, |
3388 | | SmallVectorImpl<NamedDecl *> &TemplateParams, |
3389 | | SourceLocation &LAngleLoc, |
3390 | | SourceLocation &RAngleLoc); |
3391 | | bool ParseTemplateParameterList(unsigned Depth, |
3392 | | SmallVectorImpl<NamedDecl*> &TemplateParams); |
3393 | | TPResult isStartOfTemplateTypeParameter(); |
3394 | | NamedDecl *ParseTemplateParameter(unsigned Depth, unsigned Position); |
3395 | | NamedDecl *ParseTypeParameter(unsigned Depth, unsigned Position); |
3396 | | NamedDecl *ParseTemplateTemplateParameter(unsigned Depth, unsigned Position); |
3397 | | NamedDecl *ParseNonTypeTemplateParameter(unsigned Depth, unsigned Position); |
3398 | | bool isTypeConstraintAnnotation(); |
3399 | | bool TryAnnotateTypeConstraint(); |
3400 | | void DiagnoseMisplacedEllipsis(SourceLocation EllipsisLoc, |
3401 | | SourceLocation CorrectLoc, |
3402 | | bool AlreadyHasEllipsis, |
3403 | | bool IdentifierHasName); |
3404 | | void DiagnoseMisplacedEllipsisInDeclarator(SourceLocation EllipsisLoc, |
3405 | | Declarator &D); |
3406 | | // C++ 14.3: Template arguments [temp.arg] |
3407 | | typedef SmallVector<ParsedTemplateArgument, 16> TemplateArgList; |
3408 | | |
3409 | | bool ParseGreaterThanInTemplateList(SourceLocation LAngleLoc, |
3410 | | SourceLocation &RAngleLoc, |
3411 | | bool ConsumeLastToken, |
3412 | | bool ObjCGenericList); |
3413 | | bool ParseTemplateIdAfterTemplateName(bool ConsumeLastToken, |
3414 | | SourceLocation &LAngleLoc, |
3415 | | TemplateArgList &TemplateArgs, |
3416 | | SourceLocation &RAngleLoc, |
3417 | | TemplateTy NameHint = nullptr); |
3418 | | |
3419 | | bool AnnotateTemplateIdToken(TemplateTy Template, TemplateNameKind TNK, |
3420 | | CXXScopeSpec &SS, |
3421 | | SourceLocation TemplateKWLoc, |
3422 | | UnqualifiedId &TemplateName, |
3423 | | bool AllowTypeAnnotation = true, |
3424 | | bool TypeConstraint = false); |
3425 | | void AnnotateTemplateIdTokenAsType(CXXScopeSpec &SS, |
3426 | | bool IsClassName = false); |
3427 | | bool ParseTemplateArgumentList(TemplateArgList &TemplateArgs, |
3428 | | TemplateTy Template, SourceLocation OpenLoc); |
3429 | | ParsedTemplateArgument ParseTemplateTemplateArgument(); |
3430 | | ParsedTemplateArgument ParseTemplateArgument(); |
3431 | | Decl *ParseExplicitInstantiation(DeclaratorContext Context, |
3432 | | SourceLocation ExternLoc, |
3433 | | SourceLocation TemplateLoc, |
3434 | | SourceLocation &DeclEnd, |
3435 | | ParsedAttributes &AccessAttrs, |
3436 | | AccessSpecifier AS = AS_none); |
3437 | | // C++2a: Template, concept definition [temp] |
3438 | | Decl * |
3439 | | ParseConceptDefinition(const ParsedTemplateInfo &TemplateInfo, |
3440 | | SourceLocation &DeclEnd); |
3441 | | |
3442 | | //===--------------------------------------------------------------------===// |
3443 | | // Modules |
3444 | | DeclGroupPtrTy ParseModuleDecl(Sema::ModuleImportState &ImportState); |
3445 | | Decl *ParseModuleImport(SourceLocation AtLoc, |
3446 | | Sema::ModuleImportState &ImportState); |
3447 | | bool parseMisplacedModuleImport(); |
3448 | 21.0M | bool tryParseMisplacedModuleImport() { |
3449 | 21.0M | tok::TokenKind Kind = Tok.getKind(); |
3450 | 21.0M | if (Kind == tok::annot_module_begin || Kind == tok::annot_module_end21.0M || |
3451 | 21.0M | Kind == tok::annot_module_include21.0M ) |
3452 | 21 | return parseMisplacedModuleImport(); |
3453 | 21.0M | return false; |
3454 | 21.0M | } |
3455 | | |
3456 | | bool ParseModuleName( |
3457 | | SourceLocation UseLoc, |
3458 | | SmallVectorImpl<std::pair<IdentifierInfo *, SourceLocation>> &Path, |
3459 | | bool IsImport); |
3460 | | |
3461 | | //===--------------------------------------------------------------------===// |
3462 | | // C++11/G++: Type Traits [Type-Traits.html in the GCC manual] |
3463 | | ExprResult ParseTypeTrait(); |
3464 | | |
3465 | | //===--------------------------------------------------------------------===// |
3466 | | // Embarcadero: Arary and Expression Traits |
3467 | | ExprResult ParseArrayTypeTrait(); |
3468 | | ExprResult ParseExpressionTrait(); |
3469 | | |
3470 | | //===--------------------------------------------------------------------===// |
3471 | | // Preprocessor code-completion pass-through |
3472 | | void CodeCompleteDirective(bool InConditional) override; |
3473 | | void CodeCompleteInConditionalExclusion() override; |
3474 | | void CodeCompleteMacroName(bool IsDefinition) override; |
3475 | | void CodeCompletePreprocessorExpression() override; |
3476 | | void CodeCompleteMacroArgument(IdentifierInfo *Macro, MacroInfo *MacroInfo, |
3477 | | unsigned ArgumentIndex) override; |
3478 | | void CodeCompleteIncludedFile(llvm::StringRef Dir, bool IsAngled) override; |
3479 | | void CodeCompleteNaturalLanguage() override; |
3480 | | |
3481 | | class GNUAsmQualifiers { |
3482 | | unsigned Qualifiers = AQ_unspecified; |
3483 | | |
3484 | | public: |
3485 | | enum AQ { |
3486 | | AQ_unspecified = 0, |
3487 | | AQ_volatile = 1, |
3488 | | AQ_inline = 2, |
3489 | | AQ_goto = 4, |
3490 | | }; |
3491 | | static const char *getQualifierName(AQ Qualifier); |
3492 | | bool setAsmQualifier(AQ Qualifier); |
3493 | 5.35k | inline bool isVolatile() const { return Qualifiers & AQ_volatile; }; |
3494 | 0 | inline bool isInline() const { return Qualifiers & AQ_inline; }; |
3495 | 15.3k | inline bool isGoto() const { return Qualifiers & AQ_goto; } |
3496 | | }; |
3497 | | bool isGCCAsmStatement(const Token &TokAfterAsm) const; |
3498 | | bool isGNUAsmQualifier(const Token &TokAfterAsm) const; |
3499 | | GNUAsmQualifiers::AQ getGNUAsmQualifier(const Token &Tok) const; |
3500 | | bool parseGNUAsmQualifierListOpt(GNUAsmQualifiers &AQ); |
3501 | | }; |
3502 | | |
3503 | | } // end namespace clang |
3504 | | |
3505 | | #endif |