CIndex.cpp revision 6045878f1fa7fad19d826634617991db99d3bd22
1//===- CIndex.cpp - Clang-C Source Indexing Library -----------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file implements the main API hooks in the Clang-C Source Indexing 11// library. 12// 13//===----------------------------------------------------------------------===// 14 15#include "CIndexer.h" 16#include "CXCursor.h" 17#include "CXType.h" 18#include "CXSourceLocation.h" 19#include "CIndexDiagnostic.h" 20 21#include "clang/Basic/Version.h" 22 23#include "clang/AST/DeclVisitor.h" 24#include "clang/AST/StmtVisitor.h" 25#include "clang/AST/TypeLocVisitor.h" 26#include "clang/Basic/Diagnostic.h" 27#include "clang/Frontend/ASTUnit.h" 28#include "clang/Frontend/CompilerInstance.h" 29#include "clang/Frontend/FrontendDiagnostic.h" 30#include "clang/Lex/Lexer.h" 31#include "clang/Lex/PreprocessingRecord.h" 32#include "clang/Lex/Preprocessor.h" 33#include "llvm/ADT/STLExtras.h" 34#include "llvm/ADT/Optional.h" 35#include "clang/Analysis/Support/SaveAndRestore.h" 36#include "llvm/Support/CrashRecoveryContext.h" 37#include "llvm/Support/PrettyStackTrace.h" 38#include "llvm/Support/MemoryBuffer.h" 39#include "llvm/Support/raw_ostream.h" 40#include "llvm/Support/Timer.h" 41#include "llvm/System/Mutex.h" 42#include "llvm/System/Program.h" 43#include "llvm/System/Signals.h" 44#include "llvm/System/Threading.h" 45 46// Needed to define L_TMPNAM on some systems. 47#include <cstdio> 48 49using namespace clang; 50using namespace clang::cxcursor; 51using namespace clang::cxstring; 52 53/// \brief The result of comparing two source ranges. 54enum RangeComparisonResult { 55 /// \brief Either the ranges overlap or one of the ranges is invalid. 56 RangeOverlap, 57 58 /// \brief The first range ends before the second range starts. 59 RangeBefore, 60 61 /// \brief The first range starts after the second range ends. 62 RangeAfter 63}; 64 65/// \brief Compare two source ranges to determine their relative position in 66/// the translation unit. 67static RangeComparisonResult RangeCompare(SourceManager &SM, 68 SourceRange R1, 69 SourceRange R2) { 70 assert(R1.isValid() && "First range is invalid?"); 71 assert(R2.isValid() && "Second range is invalid?"); 72 if (R1.getEnd() != R2.getBegin() && 73 SM.isBeforeInTranslationUnit(R1.getEnd(), R2.getBegin())) 74 return RangeBefore; 75 if (R2.getEnd() != R1.getBegin() && 76 SM.isBeforeInTranslationUnit(R2.getEnd(), R1.getBegin())) 77 return RangeAfter; 78 return RangeOverlap; 79} 80 81/// \brief Determine if a source location falls within, before, or after a 82/// a given source range. 83static RangeComparisonResult LocationCompare(SourceManager &SM, 84 SourceLocation L, SourceRange R) { 85 assert(R.isValid() && "First range is invalid?"); 86 assert(L.isValid() && "Second range is invalid?"); 87 if (L == R.getBegin() || L == R.getEnd()) 88 return RangeOverlap; 89 if (SM.isBeforeInTranslationUnit(L, R.getBegin())) 90 return RangeBefore; 91 if (SM.isBeforeInTranslationUnit(R.getEnd(), L)) 92 return RangeAfter; 93 return RangeOverlap; 94} 95 96/// \brief Translate a Clang source range into a CIndex source range. 97/// 98/// Clang internally represents ranges where the end location points to the 99/// start of the token at the end. However, for external clients it is more 100/// useful to have a CXSourceRange be a proper half-open interval. This routine 101/// does the appropriate translation. 102CXSourceRange cxloc::translateSourceRange(const SourceManager &SM, 103 const LangOptions &LangOpts, 104 const CharSourceRange &R) { 105 // We want the last character in this location, so we will adjust the 106 // location accordingly. 107 SourceLocation EndLoc = R.getEnd(); 108 if (EndLoc.isValid() && EndLoc.isMacroID()) 109 EndLoc = SM.getSpellingLoc(EndLoc); 110 if (R.isTokenRange() && !EndLoc.isInvalid() && EndLoc.isFileID()) { 111 unsigned Length = Lexer::MeasureTokenLength(EndLoc, SM, LangOpts); 112 EndLoc = EndLoc.getFileLocWithOffset(Length); 113 } 114 115 CXSourceRange Result = { { (void *)&SM, (void *)&LangOpts }, 116 R.getBegin().getRawEncoding(), 117 EndLoc.getRawEncoding() }; 118 return Result; 119} 120 121//===----------------------------------------------------------------------===// 122// Cursor visitor. 123//===----------------------------------------------------------------------===// 124 125namespace { 126 127class VisitorJob { 128public: 129 enum Kind { DeclVisitKind, StmtVisitKind, MemberExprPartsKind, 130 TypeLocVisitKind, OverloadExprPartsKind }; 131protected: 132 void *dataA; 133 void *dataB; 134 CXCursor parent; 135 Kind K; 136 VisitorJob(CXCursor C, Kind k, void *d1, void *d2 = 0) 137 : dataA(d1), dataB(d2), parent(C), K(k) {} 138public: 139 Kind getKind() const { return K; } 140 const CXCursor &getParent() const { return parent; } 141 static bool classof(VisitorJob *VJ) { return true; } 142}; 143 144typedef llvm::SmallVector<VisitorJob, 10> VisitorWorkList; 145 146#define DEF_JOB(NAME, DATA, KIND)\ 147class NAME : public VisitorJob {\ 148public:\ 149 NAME(DATA *d, CXCursor parent) : VisitorJob(parent, VisitorJob::KIND, d) {} \ 150 static bool classof(const VisitorJob *VJ) { return VJ->getKind() == KIND; }\ 151 DATA *get() const { return static_cast<DATA*>(dataA); }\ 152}; 153 154DEF_JOB(DeclVisit, Decl, DeclVisitKind) 155DEF_JOB(StmtVisit, Stmt, StmtVisitKind) 156DEF_JOB(MemberExprParts, MemberExpr, MemberExprPartsKind) 157DEF_JOB(OverloadExprParts, OverloadExpr, OverloadExprPartsKind) 158#undef DEF_JOB 159 160class TypeLocVisit : public VisitorJob { 161public: 162 TypeLocVisit(TypeLoc tl, CXCursor parent) : 163 VisitorJob(parent, VisitorJob::TypeLocVisitKind, 164 tl.getType().getAsOpaquePtr(), tl.getOpaqueData()) {} 165 166 static bool classof(const VisitorJob *VJ) { 167 return VJ->getKind() == TypeLocVisitKind; 168 } 169 170 TypeLoc get() { 171 QualType T = QualType::getFromOpaquePtr(dataA); 172 return TypeLoc(T, dataB); 173 } 174}; 175 176static inline void WLAddStmt(VisitorWorkList &WL, CXCursor Parent, Stmt *S) { 177 if (S) 178 WL.push_back(StmtVisit(S, Parent)); 179} 180static inline void WLAddDecl(VisitorWorkList &WL, CXCursor Parent, Decl *D) { 181 if (D) 182 WL.push_back(DeclVisit(D, Parent)); 183} 184static inline void WLAddTypeLoc(VisitorWorkList &WL, CXCursor Parent, 185 TypeSourceInfo *TI) { 186 if (TI) 187 WL.push_back(TypeLocVisit(TI->getTypeLoc(), Parent)); 188} 189 190// Cursor visitor. 191class CursorVisitor : public DeclVisitor<CursorVisitor, bool>, 192 public TypeLocVisitor<CursorVisitor, bool>, 193 public StmtVisitor<CursorVisitor, bool> 194{ 195 /// \brief The translation unit we are traversing. 196 ASTUnit *TU; 197 198 /// \brief The parent cursor whose children we are traversing. 199 CXCursor Parent; 200 201 /// \brief The declaration that serves at the parent of any statement or 202 /// expression nodes. 203 Decl *StmtParent; 204 205 /// \brief The visitor function. 206 CXCursorVisitor Visitor; 207 208 /// \brief The opaque client data, to be passed along to the visitor. 209 CXClientData ClientData; 210 211 // MaxPCHLevel - the maximum PCH level of declarations that we will pass on 212 // to the visitor. Declarations with a PCH level greater than this value will 213 // be suppressed. 214 unsigned MaxPCHLevel; 215 216 /// \brief When valid, a source range to which the cursor should restrict 217 /// its search. 218 SourceRange RegionOfInterest; 219 220 // FIXME: Eventually remove. This part of a hack to support proper 221 // iteration over all Decls contained lexically within an ObjC container. 222 DeclContext::decl_iterator *DI_current; 223 DeclContext::decl_iterator DE_current; 224 225 using DeclVisitor<CursorVisitor, bool>::Visit; 226 using TypeLocVisitor<CursorVisitor, bool>::Visit; 227 using StmtVisitor<CursorVisitor, bool>::Visit; 228 229 /// \brief Determine whether this particular source range comes before, comes 230 /// after, or overlaps the region of interest. 231 /// 232 /// \param R a half-open source range retrieved from the abstract syntax tree. 233 RangeComparisonResult CompareRegionOfInterest(SourceRange R); 234 235 class SetParentRAII { 236 CXCursor &Parent; 237 Decl *&StmtParent; 238 CXCursor OldParent; 239 240 public: 241 SetParentRAII(CXCursor &Parent, Decl *&StmtParent, CXCursor NewParent) 242 : Parent(Parent), StmtParent(StmtParent), OldParent(Parent) 243 { 244 Parent = NewParent; 245 if (clang_isDeclaration(Parent.kind)) 246 StmtParent = getCursorDecl(Parent); 247 } 248 249 ~SetParentRAII() { 250 Parent = OldParent; 251 if (clang_isDeclaration(Parent.kind)) 252 StmtParent = getCursorDecl(Parent); 253 } 254 }; 255 256public: 257 CursorVisitor(ASTUnit *TU, CXCursorVisitor Visitor, CXClientData ClientData, 258 unsigned MaxPCHLevel, 259 SourceRange RegionOfInterest = SourceRange()) 260 : TU(TU), Visitor(Visitor), ClientData(ClientData), 261 MaxPCHLevel(MaxPCHLevel), RegionOfInterest(RegionOfInterest), 262 DI_current(0) 263 { 264 Parent.kind = CXCursor_NoDeclFound; 265 Parent.data[0] = 0; 266 Parent.data[1] = 0; 267 Parent.data[2] = 0; 268 StmtParent = 0; 269 } 270 271 ASTUnit *getASTUnit() const { return TU; } 272 273 bool Visit(CXCursor Cursor, bool CheckedRegionOfInterest = false); 274 275 std::pair<PreprocessingRecord::iterator, PreprocessingRecord::iterator> 276 getPreprocessedEntities(); 277 278 bool VisitChildren(CXCursor Parent); 279 280 // Declaration visitors 281 bool VisitAttributes(Decl *D); 282 bool VisitBlockDecl(BlockDecl *B); 283 bool VisitCXXRecordDecl(CXXRecordDecl *D); 284 llvm::Optional<bool> shouldVisitCursor(CXCursor C); 285 bool VisitDeclContext(DeclContext *DC); 286 bool VisitTranslationUnitDecl(TranslationUnitDecl *D); 287 bool VisitTypedefDecl(TypedefDecl *D); 288 bool VisitTagDecl(TagDecl *D); 289 bool VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl *D); 290 bool VisitClassTemplatePartialSpecializationDecl( 291 ClassTemplatePartialSpecializationDecl *D); 292 bool VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 293 bool VisitEnumConstantDecl(EnumConstantDecl *D); 294 bool VisitDeclaratorDecl(DeclaratorDecl *DD); 295 bool VisitFunctionDecl(FunctionDecl *ND); 296 bool VisitFieldDecl(FieldDecl *D); 297 bool VisitVarDecl(VarDecl *); 298 bool VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 299 bool VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 300 bool VisitClassTemplateDecl(ClassTemplateDecl *D); 301 bool VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 302 bool VisitObjCMethodDecl(ObjCMethodDecl *ND); 303 bool VisitObjCContainerDecl(ObjCContainerDecl *D); 304 bool VisitObjCCategoryDecl(ObjCCategoryDecl *ND); 305 bool VisitObjCProtocolDecl(ObjCProtocolDecl *PID); 306 bool VisitObjCPropertyDecl(ObjCPropertyDecl *PD); 307 bool VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 308 bool VisitObjCImplDecl(ObjCImplDecl *D); 309 bool VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 310 bool VisitObjCImplementationDecl(ObjCImplementationDecl *D); 311 // FIXME: ObjCCompatibleAliasDecl requires aliased-class locations. 312 bool VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); 313 bool VisitObjCClassDecl(ObjCClassDecl *D); 314 bool VisitLinkageSpecDecl(LinkageSpecDecl *D); 315 bool VisitNamespaceDecl(NamespaceDecl *D); 316 bool VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 317 bool VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 318 bool VisitUsingDecl(UsingDecl *D); 319 bool VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 320 bool VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 321 322 // Name visitor 323 bool VisitDeclarationNameInfo(DeclarationNameInfo Name); 324 bool VisitNestedNameSpecifier(NestedNameSpecifier *NNS, SourceRange Range); 325 326 // Template visitors 327 bool VisitTemplateParameters(const TemplateParameterList *Params); 328 bool VisitTemplateName(TemplateName Name, SourceLocation Loc); 329 bool VisitTemplateArgumentLoc(const TemplateArgumentLoc &TAL); 330 331 // Type visitors 332 bool VisitQualifiedTypeLoc(QualifiedTypeLoc TL); 333 bool VisitBuiltinTypeLoc(BuiltinTypeLoc TL); 334 bool VisitTypedefTypeLoc(TypedefTypeLoc TL); 335 bool VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL); 336 bool VisitTagTypeLoc(TagTypeLoc TL); 337 bool VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL); 338 bool VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL); 339 bool VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL); 340 bool VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL); 341 bool VisitPointerTypeLoc(PointerTypeLoc TL); 342 bool VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL); 343 bool VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL); 344 bool VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL); 345 bool VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL); 346 bool VisitFunctionTypeLoc(FunctionTypeLoc TL, bool SkipResultType = false); 347 bool VisitArrayTypeLoc(ArrayTypeLoc TL); 348 bool VisitTemplateSpecializationTypeLoc(TemplateSpecializationTypeLoc TL); 349 // FIXME: Implement visitors here when the unimplemented TypeLocs get 350 // implemented 351 bool VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL); 352 bool VisitTypeOfTypeLoc(TypeOfTypeLoc TL); 353 354 // Statement visitors 355 bool VisitStmt(Stmt *S); 356 bool VisitDeclStmt(DeclStmt *S); 357 bool VisitGotoStmt(GotoStmt *S); 358 359 // Expression visitors 360 bool VisitDeclRefExpr(DeclRefExpr *E); 361 bool VisitBlockExpr(BlockExpr *B); 362 bool VisitExplicitCastExpr(ExplicitCastExpr *E); 363 bool VisitObjCMessageExpr(ObjCMessageExpr *E); 364 bool VisitObjCEncodeExpr(ObjCEncodeExpr *E); 365 bool VisitOffsetOfExpr(OffsetOfExpr *E); 366 bool VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E); 367 bool VisitAddrLabelExpr(AddrLabelExpr *E); 368 bool VisitTypesCompatibleExpr(TypesCompatibleExpr *E); 369 bool VisitVAArgExpr(VAArgExpr *E); 370 bool VisitDesignatedInitExpr(DesignatedInitExpr *E); 371 bool VisitCXXTypeidExpr(CXXTypeidExpr *E); 372 bool VisitCXXUuidofExpr(CXXUuidofExpr *E); 373 bool VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) { return false; } 374 bool VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E); 375 bool VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E); 376 bool VisitCXXNewExpr(CXXNewExpr *E); 377 bool VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E); 378 bool VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E); 379 bool VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E); 380 bool VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E); 381 bool VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E); 382 383#define DATA_RECURSIVE_VISIT(NAME)\ 384bool Visit##NAME(NAME *S) { return VisitDataRecursive(S); } 385 DATA_RECURSIVE_VISIT(BinaryOperator) 386 DATA_RECURSIVE_VISIT(CompoundLiteralExpr) 387 DATA_RECURSIVE_VISIT(CXXMemberCallExpr) 388 DATA_RECURSIVE_VISIT(CXXOperatorCallExpr) 389 DATA_RECURSIVE_VISIT(DoStmt) 390 DATA_RECURSIVE_VISIT(IfStmt) 391 DATA_RECURSIVE_VISIT(InitListExpr) 392 DATA_RECURSIVE_VISIT(ForStmt) 393 DATA_RECURSIVE_VISIT(MemberExpr) 394 DATA_RECURSIVE_VISIT(OverloadExpr) 395 DATA_RECURSIVE_VISIT(SwitchStmt) 396 DATA_RECURSIVE_VISIT(WhileStmt) 397 DATA_RECURSIVE_VISIT(UnresolvedMemberExpr) 398 399 // Data-recursive visitor functions. 400 bool IsInRegionOfInterest(CXCursor C); 401 bool RunVisitorWorkList(VisitorWorkList &WL); 402 void EnqueueWorkList(VisitorWorkList &WL, Stmt *S); 403 bool VisitDataRecursive(Stmt *S); 404}; 405 406} // end anonymous namespace 407 408static SourceRange getRawCursorExtent(CXCursor C); 409 410RangeComparisonResult CursorVisitor::CompareRegionOfInterest(SourceRange R) { 411 return RangeCompare(TU->getSourceManager(), R, RegionOfInterest); 412} 413 414/// \brief Visit the given cursor and, if requested by the visitor, 415/// its children. 416/// 417/// \param Cursor the cursor to visit. 418/// 419/// \param CheckRegionOfInterest if true, then the caller already checked that 420/// this cursor is within the region of interest. 421/// 422/// \returns true if the visitation should be aborted, false if it 423/// should continue. 424bool CursorVisitor::Visit(CXCursor Cursor, bool CheckedRegionOfInterest) { 425 if (clang_isInvalid(Cursor.kind)) 426 return false; 427 428 if (clang_isDeclaration(Cursor.kind)) { 429 Decl *D = getCursorDecl(Cursor); 430 assert(D && "Invalid declaration cursor"); 431 if (D->getPCHLevel() > MaxPCHLevel) 432 return false; 433 434 if (D->isImplicit()) 435 return false; 436 } 437 438 // If we have a range of interest, and this cursor doesn't intersect with it, 439 // we're done. 440 if (RegionOfInterest.isValid() && !CheckedRegionOfInterest) { 441 SourceRange Range = getRawCursorExtent(Cursor); 442 if (Range.isInvalid() || CompareRegionOfInterest(Range)) 443 return false; 444 } 445 446 switch (Visitor(Cursor, Parent, ClientData)) { 447 case CXChildVisit_Break: 448 return true; 449 450 case CXChildVisit_Continue: 451 return false; 452 453 case CXChildVisit_Recurse: 454 return VisitChildren(Cursor); 455 } 456 457 return false; 458} 459 460std::pair<PreprocessingRecord::iterator, PreprocessingRecord::iterator> 461CursorVisitor::getPreprocessedEntities() { 462 PreprocessingRecord &PPRec 463 = *TU->getPreprocessor().getPreprocessingRecord(); 464 465 bool OnlyLocalDecls 466 = !TU->isMainFileAST() && TU->getOnlyLocalDecls(); 467 468 // There is no region of interest; we have to walk everything. 469 if (RegionOfInterest.isInvalid()) 470 return std::make_pair(PPRec.begin(OnlyLocalDecls), 471 PPRec.end(OnlyLocalDecls)); 472 473 // Find the file in which the region of interest lands. 474 SourceManager &SM = TU->getSourceManager(); 475 std::pair<FileID, unsigned> Begin 476 = SM.getDecomposedInstantiationLoc(RegionOfInterest.getBegin()); 477 std::pair<FileID, unsigned> End 478 = SM.getDecomposedInstantiationLoc(RegionOfInterest.getEnd()); 479 480 // The region of interest spans files; we have to walk everything. 481 if (Begin.first != End.first) 482 return std::make_pair(PPRec.begin(OnlyLocalDecls), 483 PPRec.end(OnlyLocalDecls)); 484 485 ASTUnit::PreprocessedEntitiesByFileMap &ByFileMap 486 = TU->getPreprocessedEntitiesByFile(); 487 if (ByFileMap.empty()) { 488 // Build the mapping from files to sets of preprocessed entities. 489 for (PreprocessingRecord::iterator E = PPRec.begin(OnlyLocalDecls), 490 EEnd = PPRec.end(OnlyLocalDecls); 491 E != EEnd; ++E) { 492 std::pair<FileID, unsigned> P 493 = SM.getDecomposedInstantiationLoc((*E)->getSourceRange().getBegin()); 494 ByFileMap[P.first].push_back(*E); 495 } 496 } 497 498 return std::make_pair(ByFileMap[Begin.first].begin(), 499 ByFileMap[Begin.first].end()); 500} 501 502/// \brief Visit the children of the given cursor. 503/// 504/// \returns true if the visitation should be aborted, false if it 505/// should continue. 506bool CursorVisitor::VisitChildren(CXCursor Cursor) { 507 if (clang_isReference(Cursor.kind)) { 508 // By definition, references have no children. 509 return false; 510 } 511 512 // Set the Parent field to Cursor, then back to its old value once we're 513 // done. 514 SetParentRAII SetParent(Parent, StmtParent, Cursor); 515 516 if (clang_isDeclaration(Cursor.kind)) { 517 Decl *D = getCursorDecl(Cursor); 518 assert(D && "Invalid declaration cursor"); 519 return VisitAttributes(D) || Visit(D); 520 } 521 522 if (clang_isStatement(Cursor.kind)) 523 return Visit(getCursorStmt(Cursor)); 524 if (clang_isExpression(Cursor.kind)) 525 return Visit(getCursorExpr(Cursor)); 526 527 if (clang_isTranslationUnit(Cursor.kind)) { 528 ASTUnit *CXXUnit = getCursorASTUnit(Cursor); 529 if (!CXXUnit->isMainFileAST() && CXXUnit->getOnlyLocalDecls() && 530 RegionOfInterest.isInvalid()) { 531 for (ASTUnit::top_level_iterator TL = CXXUnit->top_level_begin(), 532 TLEnd = CXXUnit->top_level_end(); 533 TL != TLEnd; ++TL) { 534 if (Visit(MakeCXCursor(*TL, CXXUnit), true)) 535 return true; 536 } 537 } else if (VisitDeclContext( 538 CXXUnit->getASTContext().getTranslationUnitDecl())) 539 return true; 540 541 // Walk the preprocessing record. 542 if (CXXUnit->getPreprocessor().getPreprocessingRecord()) { 543 // FIXME: Once we have the ability to deserialize a preprocessing record, 544 // do so. 545 PreprocessingRecord::iterator E, EEnd; 546 for (llvm::tie(E, EEnd) = getPreprocessedEntities(); E != EEnd; ++E) { 547 if (MacroInstantiation *MI = dyn_cast<MacroInstantiation>(*E)) { 548 if (Visit(MakeMacroInstantiationCursor(MI, CXXUnit))) 549 return true; 550 551 continue; 552 } 553 554 if (MacroDefinition *MD = dyn_cast<MacroDefinition>(*E)) { 555 if (Visit(MakeMacroDefinitionCursor(MD, CXXUnit))) 556 return true; 557 558 continue; 559 } 560 561 if (InclusionDirective *ID = dyn_cast<InclusionDirective>(*E)) { 562 if (Visit(MakeInclusionDirectiveCursor(ID, CXXUnit))) 563 return true; 564 565 continue; 566 } 567 } 568 } 569 return false; 570 } 571 572 // Nothing to visit at the moment. 573 return false; 574} 575 576bool CursorVisitor::VisitBlockDecl(BlockDecl *B) { 577 if (Visit(B->getSignatureAsWritten()->getTypeLoc())) 578 return true; 579 580 if (Stmt *Body = B->getBody()) 581 return Visit(MakeCXCursor(Body, StmtParent, TU)); 582 583 return false; 584} 585 586llvm::Optional<bool> CursorVisitor::shouldVisitCursor(CXCursor Cursor) { 587 if (RegionOfInterest.isValid()) { 588 SourceRange Range = getRawCursorExtent(Cursor); 589 if (Range.isInvalid()) 590 return llvm::Optional<bool>(); 591 592 switch (CompareRegionOfInterest(Range)) { 593 case RangeBefore: 594 // This declaration comes before the region of interest; skip it. 595 return llvm::Optional<bool>(); 596 597 case RangeAfter: 598 // This declaration comes after the region of interest; we're done. 599 return false; 600 601 case RangeOverlap: 602 // This declaration overlaps the region of interest; visit it. 603 break; 604 } 605 } 606 return true; 607} 608 609bool CursorVisitor::VisitDeclContext(DeclContext *DC) { 610 DeclContext::decl_iterator I = DC->decls_begin(), E = DC->decls_end(); 611 612 // FIXME: Eventually remove. This part of a hack to support proper 613 // iteration over all Decls contained lexically within an ObjC container. 614 SaveAndRestore<DeclContext::decl_iterator*> DI_saved(DI_current, &I); 615 SaveAndRestore<DeclContext::decl_iterator> DE_saved(DE_current, E); 616 617 for ( ; I != E; ++I) { 618 Decl *D = *I; 619 if (D->getLexicalDeclContext() != DC) 620 continue; 621 CXCursor Cursor = MakeCXCursor(D, TU); 622 const llvm::Optional<bool> &V = shouldVisitCursor(Cursor); 623 if (!V.hasValue()) 624 continue; 625 if (!V.getValue()) 626 return false; 627 if (Visit(Cursor, true)) 628 return true; 629 } 630 return false; 631} 632 633bool CursorVisitor::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 634 llvm_unreachable("Translation units are visited directly by Visit()"); 635 return false; 636} 637 638bool CursorVisitor::VisitTypedefDecl(TypedefDecl *D) { 639 if (TypeSourceInfo *TSInfo = D->getTypeSourceInfo()) 640 return Visit(TSInfo->getTypeLoc()); 641 642 return false; 643} 644 645bool CursorVisitor::VisitTagDecl(TagDecl *D) { 646 return VisitDeclContext(D); 647} 648 649bool CursorVisitor::VisitClassTemplateSpecializationDecl( 650 ClassTemplateSpecializationDecl *D) { 651 bool ShouldVisitBody = false; 652 switch (D->getSpecializationKind()) { 653 case TSK_Undeclared: 654 case TSK_ImplicitInstantiation: 655 // Nothing to visit 656 return false; 657 658 case TSK_ExplicitInstantiationDeclaration: 659 case TSK_ExplicitInstantiationDefinition: 660 break; 661 662 case TSK_ExplicitSpecialization: 663 ShouldVisitBody = true; 664 break; 665 } 666 667 // Visit the template arguments used in the specialization. 668 if (TypeSourceInfo *SpecType = D->getTypeAsWritten()) { 669 TypeLoc TL = SpecType->getTypeLoc(); 670 if (TemplateSpecializationTypeLoc *TSTLoc 671 = dyn_cast<TemplateSpecializationTypeLoc>(&TL)) { 672 for (unsigned I = 0, N = TSTLoc->getNumArgs(); I != N; ++I) 673 if (VisitTemplateArgumentLoc(TSTLoc->getArgLoc(I))) 674 return true; 675 } 676 } 677 678 if (ShouldVisitBody && VisitCXXRecordDecl(D)) 679 return true; 680 681 return false; 682} 683 684bool CursorVisitor::VisitClassTemplatePartialSpecializationDecl( 685 ClassTemplatePartialSpecializationDecl *D) { 686 // FIXME: Visit the "outer" template parameter lists on the TagDecl 687 // before visiting these template parameters. 688 if (VisitTemplateParameters(D->getTemplateParameters())) 689 return true; 690 691 // Visit the partial specialization arguments. 692 const TemplateArgumentLoc *TemplateArgs = D->getTemplateArgsAsWritten(); 693 for (unsigned I = 0, N = D->getNumTemplateArgsAsWritten(); I != N; ++I) 694 if (VisitTemplateArgumentLoc(TemplateArgs[I])) 695 return true; 696 697 return VisitCXXRecordDecl(D); 698} 699 700bool CursorVisitor::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 701 // Visit the default argument. 702 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) 703 if (TypeSourceInfo *DefArg = D->getDefaultArgumentInfo()) 704 if (Visit(DefArg->getTypeLoc())) 705 return true; 706 707 return false; 708} 709 710bool CursorVisitor::VisitEnumConstantDecl(EnumConstantDecl *D) { 711 if (Expr *Init = D->getInitExpr()) 712 return Visit(MakeCXCursor(Init, StmtParent, TU)); 713 return false; 714} 715 716bool CursorVisitor::VisitDeclaratorDecl(DeclaratorDecl *DD) { 717 if (TypeSourceInfo *TSInfo = DD->getTypeSourceInfo()) 718 if (Visit(TSInfo->getTypeLoc())) 719 return true; 720 721 return false; 722} 723 724/// \brief Compare two base or member initializers based on their source order. 725static int CompareCXXBaseOrMemberInitializers(const void* Xp, const void *Yp) { 726 CXXBaseOrMemberInitializer const * const *X 727 = static_cast<CXXBaseOrMemberInitializer const * const *>(Xp); 728 CXXBaseOrMemberInitializer const * const *Y 729 = static_cast<CXXBaseOrMemberInitializer const * const *>(Yp); 730 731 if ((*X)->getSourceOrder() < (*Y)->getSourceOrder()) 732 return -1; 733 else if ((*X)->getSourceOrder() > (*Y)->getSourceOrder()) 734 return 1; 735 else 736 return 0; 737} 738 739bool CursorVisitor::VisitFunctionDecl(FunctionDecl *ND) { 740 if (TypeSourceInfo *TSInfo = ND->getTypeSourceInfo()) { 741 // Visit the function declaration's syntactic components in the order 742 // written. This requires a bit of work. 743 TypeLoc TL = TSInfo->getTypeLoc(); 744 FunctionTypeLoc *FTL = dyn_cast<FunctionTypeLoc>(&TL); 745 746 // If we have a function declared directly (without the use of a typedef), 747 // visit just the return type. Otherwise, just visit the function's type 748 // now. 749 if ((FTL && !isa<CXXConversionDecl>(ND) && Visit(FTL->getResultLoc())) || 750 (!FTL && Visit(TL))) 751 return true; 752 753 // Visit the nested-name-specifier, if present. 754 if (NestedNameSpecifier *Qualifier = ND->getQualifier()) 755 if (VisitNestedNameSpecifier(Qualifier, ND->getQualifierRange())) 756 return true; 757 758 // Visit the declaration name. 759 if (VisitDeclarationNameInfo(ND->getNameInfo())) 760 return true; 761 762 // FIXME: Visit explicitly-specified template arguments! 763 764 // Visit the function parameters, if we have a function type. 765 if (FTL && VisitFunctionTypeLoc(*FTL, true)) 766 return true; 767 768 // FIXME: Attributes? 769 } 770 771 if (ND->isThisDeclarationADefinition()) { 772 if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(ND)) { 773 // Find the initializers that were written in the source. 774 llvm::SmallVector<CXXBaseOrMemberInitializer *, 4> WrittenInits; 775 for (CXXConstructorDecl::init_iterator I = Constructor->init_begin(), 776 IEnd = Constructor->init_end(); 777 I != IEnd; ++I) { 778 if (!(*I)->isWritten()) 779 continue; 780 781 WrittenInits.push_back(*I); 782 } 783 784 // Sort the initializers in source order 785 llvm::array_pod_sort(WrittenInits.begin(), WrittenInits.end(), 786 &CompareCXXBaseOrMemberInitializers); 787 788 // Visit the initializers in source order 789 for (unsigned I = 0, N = WrittenInits.size(); I != N; ++I) { 790 CXXBaseOrMemberInitializer *Init = WrittenInits[I]; 791 if (Init->isMemberInitializer()) { 792 if (Visit(MakeCursorMemberRef(Init->getMember(), 793 Init->getMemberLocation(), TU))) 794 return true; 795 } else if (TypeSourceInfo *BaseInfo = Init->getBaseClassInfo()) { 796 if (Visit(BaseInfo->getTypeLoc())) 797 return true; 798 } 799 800 // Visit the initializer value. 801 if (Expr *Initializer = Init->getInit()) 802 if (Visit(MakeCXCursor(Initializer, ND, TU))) 803 return true; 804 } 805 } 806 807 if (Visit(MakeCXCursor(ND->getBody(), StmtParent, TU))) 808 return true; 809 } 810 811 return false; 812} 813 814bool CursorVisitor::VisitFieldDecl(FieldDecl *D) { 815 if (VisitDeclaratorDecl(D)) 816 return true; 817 818 if (Expr *BitWidth = D->getBitWidth()) 819 return Visit(MakeCXCursor(BitWidth, StmtParent, TU)); 820 821 return false; 822} 823 824bool CursorVisitor::VisitVarDecl(VarDecl *D) { 825 if (VisitDeclaratorDecl(D)) 826 return true; 827 828 if (Expr *Init = D->getInit()) 829 return Visit(MakeCXCursor(Init, StmtParent, TU)); 830 831 return false; 832} 833 834bool CursorVisitor::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 835 if (VisitDeclaratorDecl(D)) 836 return true; 837 838 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) 839 if (Expr *DefArg = D->getDefaultArgument()) 840 return Visit(MakeCXCursor(DefArg, StmtParent, TU)); 841 842 return false; 843} 844 845bool CursorVisitor::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 846 // FIXME: Visit the "outer" template parameter lists on the FunctionDecl 847 // before visiting these template parameters. 848 if (VisitTemplateParameters(D->getTemplateParameters())) 849 return true; 850 851 return VisitFunctionDecl(D->getTemplatedDecl()); 852} 853 854bool CursorVisitor::VisitClassTemplateDecl(ClassTemplateDecl *D) { 855 // FIXME: Visit the "outer" template parameter lists on the TagDecl 856 // before visiting these template parameters. 857 if (VisitTemplateParameters(D->getTemplateParameters())) 858 return true; 859 860 return VisitCXXRecordDecl(D->getTemplatedDecl()); 861} 862 863bool CursorVisitor::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 864 if (VisitTemplateParameters(D->getTemplateParameters())) 865 return true; 866 867 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited() && 868 VisitTemplateArgumentLoc(D->getDefaultArgument())) 869 return true; 870 871 return false; 872} 873 874bool CursorVisitor::VisitObjCMethodDecl(ObjCMethodDecl *ND) { 875 if (TypeSourceInfo *TSInfo = ND->getResultTypeSourceInfo()) 876 if (Visit(TSInfo->getTypeLoc())) 877 return true; 878 879 for (ObjCMethodDecl::param_iterator P = ND->param_begin(), 880 PEnd = ND->param_end(); 881 P != PEnd; ++P) { 882 if (Visit(MakeCXCursor(*P, TU))) 883 return true; 884 } 885 886 if (ND->isThisDeclarationADefinition() && 887 Visit(MakeCXCursor(ND->getBody(), StmtParent, TU))) 888 return true; 889 890 return false; 891} 892 893namespace { 894 struct ContainerDeclsSort { 895 SourceManager &SM; 896 ContainerDeclsSort(SourceManager &sm) : SM(sm) {} 897 bool operator()(Decl *A, Decl *B) { 898 SourceLocation L_A = A->getLocStart(); 899 SourceLocation L_B = B->getLocStart(); 900 assert(L_A.isValid() && L_B.isValid()); 901 return SM.isBeforeInTranslationUnit(L_A, L_B); 902 } 903 }; 904} 905 906bool CursorVisitor::VisitObjCContainerDecl(ObjCContainerDecl *D) { 907 // FIXME: Eventually convert back to just 'VisitDeclContext()'. Essentially 908 // an @implementation can lexically contain Decls that are not properly 909 // nested in the AST. When we identify such cases, we need to retrofit 910 // this nesting here. 911 if (!DI_current) 912 return VisitDeclContext(D); 913 914 // Scan the Decls that immediately come after the container 915 // in the current DeclContext. If any fall within the 916 // container's lexical region, stash them into a vector 917 // for later processing. 918 llvm::SmallVector<Decl *, 24> DeclsInContainer; 919 SourceLocation EndLoc = D->getSourceRange().getEnd(); 920 SourceManager &SM = TU->getSourceManager(); 921 if (EndLoc.isValid()) { 922 DeclContext::decl_iterator next = *DI_current; 923 while (++next != DE_current) { 924 Decl *D_next = *next; 925 if (!D_next) 926 break; 927 SourceLocation L = D_next->getLocStart(); 928 if (!L.isValid()) 929 break; 930 if (SM.isBeforeInTranslationUnit(L, EndLoc)) { 931 *DI_current = next; 932 DeclsInContainer.push_back(D_next); 933 continue; 934 } 935 break; 936 } 937 } 938 939 // The common case. 940 if (DeclsInContainer.empty()) 941 return VisitDeclContext(D); 942 943 // Get all the Decls in the DeclContext, and sort them with the 944 // additional ones we've collected. Then visit them. 945 for (DeclContext::decl_iterator I = D->decls_begin(), E = D->decls_end(); 946 I!=E; ++I) { 947 Decl *subDecl = *I; 948 if (!subDecl || subDecl->getLexicalDeclContext() != D || 949 subDecl->getLocStart().isInvalid()) 950 continue; 951 DeclsInContainer.push_back(subDecl); 952 } 953 954 // Now sort the Decls so that they appear in lexical order. 955 std::sort(DeclsInContainer.begin(), DeclsInContainer.end(), 956 ContainerDeclsSort(SM)); 957 958 // Now visit the decls. 959 for (llvm::SmallVectorImpl<Decl*>::iterator I = DeclsInContainer.begin(), 960 E = DeclsInContainer.end(); I != E; ++I) { 961 CXCursor Cursor = MakeCXCursor(*I, TU); 962 const llvm::Optional<bool> &V = shouldVisitCursor(Cursor); 963 if (!V.hasValue()) 964 continue; 965 if (!V.getValue()) 966 return false; 967 if (Visit(Cursor, true)) 968 return true; 969 } 970 return false; 971} 972 973bool CursorVisitor::VisitObjCCategoryDecl(ObjCCategoryDecl *ND) { 974 if (Visit(MakeCursorObjCClassRef(ND->getClassInterface(), ND->getLocation(), 975 TU))) 976 return true; 977 978 ObjCCategoryDecl::protocol_loc_iterator PL = ND->protocol_loc_begin(); 979 for (ObjCCategoryDecl::protocol_iterator I = ND->protocol_begin(), 980 E = ND->protocol_end(); I != E; ++I, ++PL) 981 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 982 return true; 983 984 return VisitObjCContainerDecl(ND); 985} 986 987bool CursorVisitor::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) { 988 ObjCProtocolDecl::protocol_loc_iterator PL = PID->protocol_loc_begin(); 989 for (ObjCProtocolDecl::protocol_iterator I = PID->protocol_begin(), 990 E = PID->protocol_end(); I != E; ++I, ++PL) 991 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 992 return true; 993 994 return VisitObjCContainerDecl(PID); 995} 996 997bool CursorVisitor::VisitObjCPropertyDecl(ObjCPropertyDecl *PD) { 998 if (PD->getTypeSourceInfo() && Visit(PD->getTypeSourceInfo()->getTypeLoc())) 999 return true; 1000 1001 // FIXME: This implements a workaround with @property declarations also being 1002 // installed in the DeclContext for the @interface. Eventually this code 1003 // should be removed. 1004 ObjCCategoryDecl *CDecl = dyn_cast<ObjCCategoryDecl>(PD->getDeclContext()); 1005 if (!CDecl || !CDecl->IsClassExtension()) 1006 return false; 1007 1008 ObjCInterfaceDecl *ID = CDecl->getClassInterface(); 1009 if (!ID) 1010 return false; 1011 1012 IdentifierInfo *PropertyId = PD->getIdentifier(); 1013 ObjCPropertyDecl *prevDecl = 1014 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(ID), PropertyId); 1015 1016 if (!prevDecl) 1017 return false; 1018 1019 // Visit synthesized methods since they will be skipped when visiting 1020 // the @interface. 1021 if (ObjCMethodDecl *MD = prevDecl->getGetterMethodDecl()) 1022 if (MD->isSynthesized() && MD->getLexicalDeclContext() == CDecl) 1023 if (Visit(MakeCXCursor(MD, TU))) 1024 return true; 1025 1026 if (ObjCMethodDecl *MD = prevDecl->getSetterMethodDecl()) 1027 if (MD->isSynthesized() && MD->getLexicalDeclContext() == CDecl) 1028 if (Visit(MakeCXCursor(MD, TU))) 1029 return true; 1030 1031 return false; 1032} 1033 1034bool CursorVisitor::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 1035 // Issue callbacks for super class. 1036 if (D->getSuperClass() && 1037 Visit(MakeCursorObjCSuperClassRef(D->getSuperClass(), 1038 D->getSuperClassLoc(), 1039 TU))) 1040 return true; 1041 1042 ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(); 1043 for (ObjCInterfaceDecl::protocol_iterator I = D->protocol_begin(), 1044 E = D->protocol_end(); I != E; ++I, ++PL) 1045 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 1046 return true; 1047 1048 return VisitObjCContainerDecl(D); 1049} 1050 1051bool CursorVisitor::VisitObjCImplDecl(ObjCImplDecl *D) { 1052 return VisitObjCContainerDecl(D); 1053} 1054 1055bool CursorVisitor::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 1056 // 'ID' could be null when dealing with invalid code. 1057 if (ObjCInterfaceDecl *ID = D->getClassInterface()) 1058 if (Visit(MakeCursorObjCClassRef(ID, D->getLocation(), TU))) 1059 return true; 1060 1061 return VisitObjCImplDecl(D); 1062} 1063 1064bool CursorVisitor::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 1065#if 0 1066 // Issue callbacks for super class. 1067 // FIXME: No source location information! 1068 if (D->getSuperClass() && 1069 Visit(MakeCursorObjCSuperClassRef(D->getSuperClass(), 1070 D->getSuperClassLoc(), 1071 TU))) 1072 return true; 1073#endif 1074 1075 return VisitObjCImplDecl(D); 1076} 1077 1078bool CursorVisitor::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { 1079 ObjCForwardProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(); 1080 for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(), 1081 E = D->protocol_end(); 1082 I != E; ++I, ++PL) 1083 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 1084 return true; 1085 1086 return false; 1087} 1088 1089bool CursorVisitor::VisitObjCClassDecl(ObjCClassDecl *D) { 1090 for (ObjCClassDecl::iterator C = D->begin(), CEnd = D->end(); C != CEnd; ++C) 1091 if (Visit(MakeCursorObjCClassRef(C->getInterface(), C->getLocation(), TU))) 1092 return true; 1093 1094 return false; 1095} 1096 1097bool CursorVisitor::VisitNamespaceDecl(NamespaceDecl *D) { 1098 return VisitDeclContext(D); 1099} 1100 1101bool CursorVisitor::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1102 // Visit nested-name-specifier. 1103 if (NestedNameSpecifier *Qualifier = D->getQualifier()) 1104 if (VisitNestedNameSpecifier(Qualifier, D->getQualifierRange())) 1105 return true; 1106 1107 return Visit(MakeCursorNamespaceRef(D->getAliasedNamespace(), 1108 D->getTargetNameLoc(), TU)); 1109} 1110 1111bool CursorVisitor::VisitUsingDecl(UsingDecl *D) { 1112 // Visit nested-name-specifier. 1113 if (NestedNameSpecifier *Qualifier = D->getTargetNestedNameDecl()) 1114 if (VisitNestedNameSpecifier(Qualifier, D->getNestedNameRange())) 1115 return true; 1116 1117 if (Visit(MakeCursorOverloadedDeclRef(D, D->getLocation(), TU))) 1118 return true; 1119 1120 return VisitDeclarationNameInfo(D->getNameInfo()); 1121} 1122 1123bool CursorVisitor::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1124 // Visit nested-name-specifier. 1125 if (NestedNameSpecifier *Qualifier = D->getQualifier()) 1126 if (VisitNestedNameSpecifier(Qualifier, D->getQualifierRange())) 1127 return true; 1128 1129 return Visit(MakeCursorNamespaceRef(D->getNominatedNamespaceAsWritten(), 1130 D->getIdentLocation(), TU)); 1131} 1132 1133bool CursorVisitor::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1134 // Visit nested-name-specifier. 1135 if (NestedNameSpecifier *Qualifier = D->getTargetNestedNameSpecifier()) 1136 if (VisitNestedNameSpecifier(Qualifier, D->getTargetNestedNameRange())) 1137 return true; 1138 1139 return VisitDeclarationNameInfo(D->getNameInfo()); 1140} 1141 1142bool CursorVisitor::VisitUnresolvedUsingTypenameDecl( 1143 UnresolvedUsingTypenameDecl *D) { 1144 // Visit nested-name-specifier. 1145 if (NestedNameSpecifier *Qualifier = D->getTargetNestedNameSpecifier()) 1146 if (VisitNestedNameSpecifier(Qualifier, D->getTargetNestedNameRange())) 1147 return true; 1148 1149 return false; 1150} 1151 1152bool CursorVisitor::VisitDeclarationNameInfo(DeclarationNameInfo Name) { 1153 switch (Name.getName().getNameKind()) { 1154 case clang::DeclarationName::Identifier: 1155 case clang::DeclarationName::CXXLiteralOperatorName: 1156 case clang::DeclarationName::CXXOperatorName: 1157 case clang::DeclarationName::CXXUsingDirective: 1158 return false; 1159 1160 case clang::DeclarationName::CXXConstructorName: 1161 case clang::DeclarationName::CXXDestructorName: 1162 case clang::DeclarationName::CXXConversionFunctionName: 1163 if (TypeSourceInfo *TSInfo = Name.getNamedTypeInfo()) 1164 return Visit(TSInfo->getTypeLoc()); 1165 return false; 1166 1167 case clang::DeclarationName::ObjCZeroArgSelector: 1168 case clang::DeclarationName::ObjCOneArgSelector: 1169 case clang::DeclarationName::ObjCMultiArgSelector: 1170 // FIXME: Per-identifier location info? 1171 return false; 1172 } 1173 1174 return false; 1175} 1176 1177bool CursorVisitor::VisitNestedNameSpecifier(NestedNameSpecifier *NNS, 1178 SourceRange Range) { 1179 // FIXME: This whole routine is a hack to work around the lack of proper 1180 // source information in nested-name-specifiers (PR5791). Since we do have 1181 // a beginning source location, we can visit the first component of the 1182 // nested-name-specifier, if it's a single-token component. 1183 if (!NNS) 1184 return false; 1185 1186 // Get the first component in the nested-name-specifier. 1187 while (NestedNameSpecifier *Prefix = NNS->getPrefix()) 1188 NNS = Prefix; 1189 1190 switch (NNS->getKind()) { 1191 case NestedNameSpecifier::Namespace: 1192 // FIXME: The token at this source location might actually have been a 1193 // namespace alias, but we don't model that. Lame! 1194 return Visit(MakeCursorNamespaceRef(NNS->getAsNamespace(), Range.getBegin(), 1195 TU)); 1196 1197 case NestedNameSpecifier::TypeSpec: { 1198 // If the type has a form where we know that the beginning of the source 1199 // range matches up with a reference cursor. Visit the appropriate reference 1200 // cursor. 1201 Type *T = NNS->getAsType(); 1202 if (const TypedefType *Typedef = dyn_cast<TypedefType>(T)) 1203 return Visit(MakeCursorTypeRef(Typedef->getDecl(), Range.getBegin(), TU)); 1204 if (const TagType *Tag = dyn_cast<TagType>(T)) 1205 return Visit(MakeCursorTypeRef(Tag->getDecl(), Range.getBegin(), TU)); 1206 if (const TemplateSpecializationType *TST 1207 = dyn_cast<TemplateSpecializationType>(T)) 1208 return VisitTemplateName(TST->getTemplateName(), Range.getBegin()); 1209 break; 1210 } 1211 1212 case NestedNameSpecifier::TypeSpecWithTemplate: 1213 case NestedNameSpecifier::Global: 1214 case NestedNameSpecifier::Identifier: 1215 break; 1216 } 1217 1218 return false; 1219} 1220 1221bool CursorVisitor::VisitTemplateParameters( 1222 const TemplateParameterList *Params) { 1223 if (!Params) 1224 return false; 1225 1226 for (TemplateParameterList::const_iterator P = Params->begin(), 1227 PEnd = Params->end(); 1228 P != PEnd; ++P) { 1229 if (Visit(MakeCXCursor(*P, TU))) 1230 return true; 1231 } 1232 1233 return false; 1234} 1235 1236bool CursorVisitor::VisitTemplateName(TemplateName Name, SourceLocation Loc) { 1237 switch (Name.getKind()) { 1238 case TemplateName::Template: 1239 return Visit(MakeCursorTemplateRef(Name.getAsTemplateDecl(), Loc, TU)); 1240 1241 case TemplateName::OverloadedTemplate: 1242 // Visit the overloaded template set. 1243 if (Visit(MakeCursorOverloadedDeclRef(Name, Loc, TU))) 1244 return true; 1245 1246 return false; 1247 1248 case TemplateName::DependentTemplate: 1249 // FIXME: Visit nested-name-specifier. 1250 return false; 1251 1252 case TemplateName::QualifiedTemplate: 1253 // FIXME: Visit nested-name-specifier. 1254 return Visit(MakeCursorTemplateRef( 1255 Name.getAsQualifiedTemplateName()->getDecl(), 1256 Loc, TU)); 1257 } 1258 1259 return false; 1260} 1261 1262bool CursorVisitor::VisitTemplateArgumentLoc(const TemplateArgumentLoc &TAL) { 1263 switch (TAL.getArgument().getKind()) { 1264 case TemplateArgument::Null: 1265 case TemplateArgument::Integral: 1266 return false; 1267 1268 case TemplateArgument::Pack: 1269 // FIXME: Implement when variadic templates come along. 1270 return false; 1271 1272 case TemplateArgument::Type: 1273 if (TypeSourceInfo *TSInfo = TAL.getTypeSourceInfo()) 1274 return Visit(TSInfo->getTypeLoc()); 1275 return false; 1276 1277 case TemplateArgument::Declaration: 1278 if (Expr *E = TAL.getSourceDeclExpression()) 1279 return Visit(MakeCXCursor(E, StmtParent, TU)); 1280 return false; 1281 1282 case TemplateArgument::Expression: 1283 if (Expr *E = TAL.getSourceExpression()) 1284 return Visit(MakeCXCursor(E, StmtParent, TU)); 1285 return false; 1286 1287 case TemplateArgument::Template: 1288 return VisitTemplateName(TAL.getArgument().getAsTemplate(), 1289 TAL.getTemplateNameLoc()); 1290 } 1291 1292 return false; 1293} 1294 1295bool CursorVisitor::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1296 return VisitDeclContext(D); 1297} 1298 1299bool CursorVisitor::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 1300 return Visit(TL.getUnqualifiedLoc()); 1301} 1302 1303bool CursorVisitor::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { 1304 ASTContext &Context = TU->getASTContext(); 1305 1306 // Some builtin types (such as Objective-C's "id", "sel", and 1307 // "Class") have associated declarations. Create cursors for those. 1308 QualType VisitType; 1309 switch (TL.getType()->getAs<BuiltinType>()->getKind()) { 1310 case BuiltinType::Void: 1311 case BuiltinType::Bool: 1312 case BuiltinType::Char_U: 1313 case BuiltinType::UChar: 1314 case BuiltinType::Char16: 1315 case BuiltinType::Char32: 1316 case BuiltinType::UShort: 1317 case BuiltinType::UInt: 1318 case BuiltinType::ULong: 1319 case BuiltinType::ULongLong: 1320 case BuiltinType::UInt128: 1321 case BuiltinType::Char_S: 1322 case BuiltinType::SChar: 1323 case BuiltinType::WChar: 1324 case BuiltinType::Short: 1325 case BuiltinType::Int: 1326 case BuiltinType::Long: 1327 case BuiltinType::LongLong: 1328 case BuiltinType::Int128: 1329 case BuiltinType::Float: 1330 case BuiltinType::Double: 1331 case BuiltinType::LongDouble: 1332 case BuiltinType::NullPtr: 1333 case BuiltinType::Overload: 1334 case BuiltinType::Dependent: 1335 break; 1336 1337 case BuiltinType::UndeducedAuto: // FIXME: Deserves a cursor? 1338 break; 1339 1340 case BuiltinType::ObjCId: 1341 VisitType = Context.getObjCIdType(); 1342 break; 1343 1344 case BuiltinType::ObjCClass: 1345 VisitType = Context.getObjCClassType(); 1346 break; 1347 1348 case BuiltinType::ObjCSel: 1349 VisitType = Context.getObjCSelType(); 1350 break; 1351 } 1352 1353 if (!VisitType.isNull()) { 1354 if (const TypedefType *Typedef = VisitType->getAs<TypedefType>()) 1355 return Visit(MakeCursorTypeRef(Typedef->getDecl(), TL.getBuiltinLoc(), 1356 TU)); 1357 } 1358 1359 return false; 1360} 1361 1362bool CursorVisitor::VisitTypedefTypeLoc(TypedefTypeLoc TL) { 1363 return Visit(MakeCursorTypeRef(TL.getTypedefDecl(), TL.getNameLoc(), TU)); 1364} 1365 1366bool CursorVisitor::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) { 1367 return Visit(MakeCursorTypeRef(TL.getDecl(), TL.getNameLoc(), TU)); 1368} 1369 1370bool CursorVisitor::VisitTagTypeLoc(TagTypeLoc TL) { 1371 return Visit(MakeCursorTypeRef(TL.getDecl(), TL.getNameLoc(), TU)); 1372} 1373 1374bool CursorVisitor::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) { 1375 // FIXME: We can't visit the template type parameter, because there's 1376 // no context information with which we can match up the depth/index in the 1377 // type to the appropriate 1378 return false; 1379} 1380 1381bool CursorVisitor::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { 1382 if (Visit(MakeCursorObjCClassRef(TL.getIFaceDecl(), TL.getNameLoc(), TU))) 1383 return true; 1384 1385 return false; 1386} 1387 1388bool CursorVisitor::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { 1389 if (TL.hasBaseTypeAsWritten() && Visit(TL.getBaseLoc())) 1390 return true; 1391 1392 for (unsigned I = 0, N = TL.getNumProtocols(); I != N; ++I) { 1393 if (Visit(MakeCursorObjCProtocolRef(TL.getProtocol(I), TL.getProtocolLoc(I), 1394 TU))) 1395 return true; 1396 } 1397 1398 return false; 1399} 1400 1401bool CursorVisitor::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 1402 return Visit(TL.getPointeeLoc()); 1403} 1404 1405bool CursorVisitor::VisitPointerTypeLoc(PointerTypeLoc TL) { 1406 return Visit(TL.getPointeeLoc()); 1407} 1408 1409bool CursorVisitor::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { 1410 return Visit(TL.getPointeeLoc()); 1411} 1412 1413bool CursorVisitor::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { 1414 return Visit(TL.getPointeeLoc()); 1415} 1416 1417bool CursorVisitor::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { 1418 return Visit(TL.getPointeeLoc()); 1419} 1420 1421bool CursorVisitor::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { 1422 return Visit(TL.getPointeeLoc()); 1423} 1424 1425bool CursorVisitor::VisitFunctionTypeLoc(FunctionTypeLoc TL, 1426 bool SkipResultType) { 1427 if (!SkipResultType && Visit(TL.getResultLoc())) 1428 return true; 1429 1430 for (unsigned I = 0, N = TL.getNumArgs(); I != N; ++I) 1431 if (Decl *D = TL.getArg(I)) 1432 if (Visit(MakeCXCursor(D, TU))) 1433 return true; 1434 1435 return false; 1436} 1437 1438bool CursorVisitor::VisitArrayTypeLoc(ArrayTypeLoc TL) { 1439 if (Visit(TL.getElementLoc())) 1440 return true; 1441 1442 if (Expr *Size = TL.getSizeExpr()) 1443 return Visit(MakeCXCursor(Size, StmtParent, TU)); 1444 1445 return false; 1446} 1447 1448bool CursorVisitor::VisitTemplateSpecializationTypeLoc( 1449 TemplateSpecializationTypeLoc TL) { 1450 // Visit the template name. 1451 if (VisitTemplateName(TL.getTypePtr()->getTemplateName(), 1452 TL.getTemplateNameLoc())) 1453 return true; 1454 1455 // Visit the template arguments. 1456 for (unsigned I = 0, N = TL.getNumArgs(); I != N; ++I) 1457 if (VisitTemplateArgumentLoc(TL.getArgLoc(I))) 1458 return true; 1459 1460 return false; 1461} 1462 1463bool CursorVisitor::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { 1464 return Visit(MakeCXCursor(TL.getUnderlyingExpr(), StmtParent, TU)); 1465} 1466 1467bool CursorVisitor::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { 1468 if (TypeSourceInfo *TSInfo = TL.getUnderlyingTInfo()) 1469 return Visit(TSInfo->getTypeLoc()); 1470 1471 return false; 1472} 1473 1474bool CursorVisitor::VisitStmt(Stmt *S) { 1475 for (Stmt::child_iterator Child = S->child_begin(), ChildEnd = S->child_end(); 1476 Child != ChildEnd; ++Child) { 1477 if (Stmt *C = *Child) 1478 if (Visit(MakeCXCursor(C, StmtParent, TU))) 1479 return true; 1480 } 1481 1482 return false; 1483} 1484 1485bool CursorVisitor::VisitDeclStmt(DeclStmt *S) { 1486 bool isFirst = true; 1487 for (DeclStmt::decl_iterator D = S->decl_begin(), DEnd = S->decl_end(); 1488 D != DEnd; ++D) { 1489 if (*D && Visit(MakeCXCursor(*D, TU, isFirst))) 1490 return true; 1491 isFirst = false; 1492 } 1493 1494 return false; 1495} 1496 1497bool CursorVisitor::VisitGotoStmt(GotoStmt *S) { 1498 return Visit(MakeCursorLabelRef(S->getLabel(), S->getLabelLoc(), TU)); 1499} 1500 1501bool CursorVisitor::VisitDeclRefExpr(DeclRefExpr *E) { 1502 // Visit nested-name-specifier, if present. 1503 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1504 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1505 return true; 1506 1507 // Visit declaration name. 1508 if (VisitDeclarationNameInfo(E->getNameInfo())) 1509 return true; 1510 1511 // Visit explicitly-specified template arguments. 1512 if (E->hasExplicitTemplateArgs()) { 1513 ExplicitTemplateArgumentList &Args = E->getExplicitTemplateArgs(); 1514 for (TemplateArgumentLoc *Arg = Args.getTemplateArgs(), 1515 *ArgEnd = Arg + Args.NumTemplateArgs; 1516 Arg != ArgEnd; ++Arg) 1517 if (VisitTemplateArgumentLoc(*Arg)) 1518 return true; 1519 } 1520 1521 return false; 1522} 1523 1524bool CursorVisitor::VisitCXXRecordDecl(CXXRecordDecl *D) { 1525 if (D->isDefinition()) { 1526 for (CXXRecordDecl::base_class_iterator I = D->bases_begin(), 1527 E = D->bases_end(); I != E; ++I) { 1528 if (Visit(cxcursor::MakeCursorCXXBaseSpecifier(I, TU))) 1529 return true; 1530 } 1531 } 1532 1533 return VisitTagDecl(D); 1534} 1535 1536 1537bool CursorVisitor::VisitBlockExpr(BlockExpr *B) { 1538 return Visit(B->getBlockDecl()); 1539} 1540 1541bool CursorVisitor::VisitOffsetOfExpr(OffsetOfExpr *E) { 1542 // Visit the type into which we're computing an offset. 1543 if (Visit(E->getTypeSourceInfo()->getTypeLoc())) 1544 return true; 1545 1546 // Visit the components of the offsetof expression. 1547 for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) { 1548 typedef OffsetOfExpr::OffsetOfNode OffsetOfNode; 1549 const OffsetOfNode &Node = E->getComponent(I); 1550 switch (Node.getKind()) { 1551 case OffsetOfNode::Array: 1552 if (Visit(MakeCXCursor(E->getIndexExpr(Node.getArrayExprIndex()), 1553 StmtParent, TU))) 1554 return true; 1555 break; 1556 1557 case OffsetOfNode::Field: 1558 if (Visit(MakeCursorMemberRef(Node.getField(), Node.getRange().getEnd(), 1559 TU))) 1560 return true; 1561 break; 1562 1563 case OffsetOfNode::Identifier: 1564 case OffsetOfNode::Base: 1565 continue; 1566 } 1567 } 1568 1569 return false; 1570} 1571 1572bool CursorVisitor::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E) { 1573 if (E->isArgumentType()) { 1574 if (TypeSourceInfo *TSInfo = E->getArgumentTypeInfo()) 1575 return Visit(TSInfo->getTypeLoc()); 1576 1577 return false; 1578 } 1579 1580 return VisitExpr(E); 1581} 1582 1583bool CursorVisitor::VisitExplicitCastExpr(ExplicitCastExpr *E) { 1584 if (TypeSourceInfo *TSInfo = E->getTypeInfoAsWritten()) 1585 if (Visit(TSInfo->getTypeLoc())) 1586 return true; 1587 1588 return VisitCastExpr(E); 1589} 1590 1591bool CursorVisitor::VisitAddrLabelExpr(AddrLabelExpr *E) { 1592 return Visit(MakeCursorLabelRef(E->getLabel(), E->getLabelLoc(), TU)); 1593} 1594 1595bool CursorVisitor::VisitTypesCompatibleExpr(TypesCompatibleExpr *E) { 1596 return Visit(E->getArgTInfo1()->getTypeLoc()) || 1597 Visit(E->getArgTInfo2()->getTypeLoc()); 1598} 1599 1600bool CursorVisitor::VisitVAArgExpr(VAArgExpr *E) { 1601 if (Visit(E->getWrittenTypeInfo()->getTypeLoc())) 1602 return true; 1603 1604 return Visit(MakeCXCursor(E->getSubExpr(), StmtParent, TU)); 1605} 1606 1607bool CursorVisitor::VisitDesignatedInitExpr(DesignatedInitExpr *E) { 1608 // Visit the designators. 1609 typedef DesignatedInitExpr::Designator Designator; 1610 for (DesignatedInitExpr::designators_iterator D = E->designators_begin(), 1611 DEnd = E->designators_end(); 1612 D != DEnd; ++D) { 1613 if (D->isFieldDesignator()) { 1614 if (FieldDecl *Field = D->getField()) 1615 if (Visit(MakeCursorMemberRef(Field, D->getFieldLoc(), TU))) 1616 return true; 1617 1618 continue; 1619 } 1620 1621 if (D->isArrayDesignator()) { 1622 if (Visit(MakeCXCursor(E->getArrayIndex(*D), StmtParent, TU))) 1623 return true; 1624 1625 continue; 1626 } 1627 1628 assert(D->isArrayRangeDesignator() && "Unknown designator kind"); 1629 if (Visit(MakeCXCursor(E->getArrayRangeStart(*D), StmtParent, TU)) || 1630 Visit(MakeCXCursor(E->getArrayRangeEnd(*D), StmtParent, TU))) 1631 return true; 1632 } 1633 1634 // Visit the initializer value itself. 1635 return Visit(MakeCXCursor(E->getInit(), StmtParent, TU)); 1636} 1637 1638bool CursorVisitor::VisitCXXTypeidExpr(CXXTypeidExpr *E) { 1639 if (E->isTypeOperand()) { 1640 if (TypeSourceInfo *TSInfo = E->getTypeOperandSourceInfo()) 1641 return Visit(TSInfo->getTypeLoc()); 1642 1643 return false; 1644 } 1645 1646 return VisitExpr(E); 1647} 1648 1649bool CursorVisitor::VisitCXXUuidofExpr(CXXUuidofExpr *E) { 1650 if (E->isTypeOperand()) { 1651 if (TypeSourceInfo *TSInfo = E->getTypeOperandSourceInfo()) 1652 return Visit(TSInfo->getTypeLoc()); 1653 1654 return false; 1655 } 1656 1657 return VisitExpr(E); 1658} 1659 1660bool CursorVisitor::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) { 1661 if (TypeSourceInfo *TSInfo = E->getTypeSourceInfo()) 1662 if (Visit(TSInfo->getTypeLoc())) 1663 return true; 1664 1665 return VisitExpr(E); 1666} 1667 1668bool CursorVisitor::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) { 1669 if (TypeSourceInfo *TSInfo = E->getTypeSourceInfo()) 1670 return Visit(TSInfo->getTypeLoc()); 1671 1672 return false; 1673} 1674 1675bool CursorVisitor::VisitCXXNewExpr(CXXNewExpr *E) { 1676 // Visit placement arguments. 1677 for (unsigned I = 0, N = E->getNumPlacementArgs(); I != N; ++I) 1678 if (Visit(MakeCXCursor(E->getPlacementArg(I), StmtParent, TU))) 1679 return true; 1680 1681 // Visit the allocated type. 1682 if (TypeSourceInfo *TSInfo = E->getAllocatedTypeSourceInfo()) 1683 if (Visit(TSInfo->getTypeLoc())) 1684 return true; 1685 1686 // Visit the array size, if any. 1687 if (E->isArray() && Visit(MakeCXCursor(E->getArraySize(), StmtParent, TU))) 1688 return true; 1689 1690 // Visit the initializer or constructor arguments. 1691 for (unsigned I = 0, N = E->getNumConstructorArgs(); I != N; ++I) 1692 if (Visit(MakeCXCursor(E->getConstructorArg(I), StmtParent, TU))) 1693 return true; 1694 1695 return false; 1696} 1697 1698bool CursorVisitor::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) { 1699 // Visit base expression. 1700 if (Visit(MakeCXCursor(E->getBase(), StmtParent, TU))) 1701 return true; 1702 1703 // Visit the nested-name-specifier. 1704 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1705 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1706 return true; 1707 1708 // Visit the scope type that looks disturbingly like the nested-name-specifier 1709 // but isn't. 1710 if (TypeSourceInfo *TSInfo = E->getScopeTypeInfo()) 1711 if (Visit(TSInfo->getTypeLoc())) 1712 return true; 1713 1714 // Visit the name of the type being destroyed. 1715 if (TypeSourceInfo *TSInfo = E->getDestroyedTypeInfo()) 1716 if (Visit(TSInfo->getTypeLoc())) 1717 return true; 1718 1719 return false; 1720} 1721 1722bool CursorVisitor::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E) { 1723 return Visit(E->getQueriedTypeSourceInfo()->getTypeLoc()); 1724} 1725 1726bool CursorVisitor::VisitDependentScopeDeclRefExpr( 1727 DependentScopeDeclRefExpr *E) { 1728 // Visit the nested-name-specifier. 1729 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1730 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1731 return true; 1732 1733 // Visit the declaration name. 1734 if (VisitDeclarationNameInfo(E->getNameInfo())) 1735 return true; 1736 1737 // Visit the explicitly-specified template arguments. 1738 if (const ExplicitTemplateArgumentList *ArgList 1739 = E->getOptionalExplicitTemplateArgs()) { 1740 for (const TemplateArgumentLoc *Arg = ArgList->getTemplateArgs(), 1741 *ArgEnd = Arg + ArgList->NumTemplateArgs; 1742 Arg != ArgEnd; ++Arg) { 1743 if (VisitTemplateArgumentLoc(*Arg)) 1744 return true; 1745 } 1746 } 1747 1748 return false; 1749} 1750 1751bool CursorVisitor::VisitCXXUnresolvedConstructExpr( 1752 CXXUnresolvedConstructExpr *E) { 1753 if (TypeSourceInfo *TSInfo = E->getTypeSourceInfo()) 1754 if (Visit(TSInfo->getTypeLoc())) 1755 return true; 1756 1757 return VisitExpr(E); 1758} 1759 1760bool CursorVisitor::VisitCXXDependentScopeMemberExpr( 1761 CXXDependentScopeMemberExpr *E) { 1762 // Visit the base expression, if there is one. 1763 if (!E->isImplicitAccess() && 1764 Visit(MakeCXCursor(E->getBase(), StmtParent, TU))) 1765 return true; 1766 1767 // Visit the nested-name-specifier. 1768 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1769 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1770 return true; 1771 1772 // Visit the declaration name. 1773 if (VisitDeclarationNameInfo(E->getMemberNameInfo())) 1774 return true; 1775 1776 // Visit the explicitly-specified template arguments. 1777 if (const ExplicitTemplateArgumentList *ArgList 1778 = E->getOptionalExplicitTemplateArgs()) { 1779 for (const TemplateArgumentLoc *Arg = ArgList->getTemplateArgs(), 1780 *ArgEnd = Arg + ArgList->NumTemplateArgs; 1781 Arg != ArgEnd; ++Arg) { 1782 if (VisitTemplateArgumentLoc(*Arg)) 1783 return true; 1784 } 1785 } 1786 1787 return false; 1788} 1789 1790bool CursorVisitor::VisitObjCMessageExpr(ObjCMessageExpr *E) { 1791 if (TypeSourceInfo *TSInfo = E->getClassReceiverTypeInfo()) 1792 if (Visit(TSInfo->getTypeLoc())) 1793 return true; 1794 1795 return VisitExpr(E); 1796} 1797 1798bool CursorVisitor::VisitObjCEncodeExpr(ObjCEncodeExpr *E) { 1799 return Visit(E->getEncodedTypeSourceInfo()->getTypeLoc()); 1800} 1801 1802 1803bool CursorVisitor::VisitAttributes(Decl *D) { 1804 for (AttrVec::const_iterator i = D->attr_begin(), e = D->attr_end(); 1805 i != e; ++i) 1806 if (Visit(MakeCXCursor(*i, D, TU))) 1807 return true; 1808 1809 return false; 1810} 1811 1812//===----------------------------------------------------------------------===// 1813// Data-recursive visitor methods. 1814//===----------------------------------------------------------------------===// 1815 1816static void EnqueueChildren(VisitorWorkList &WL, CXCursor Parent, Stmt *S) { 1817 unsigned size = WL.size(); 1818 for (Stmt::child_iterator Child = S->child_begin(), ChildEnd = S->child_end(); 1819 Child != ChildEnd; ++Child) { 1820 WLAddStmt(WL, Parent, *Child); 1821 } 1822 if (size == WL.size()) 1823 return; 1824 // Now reverse the entries we just added. This will match the DFS 1825 // ordering performed by the worklist. 1826 VisitorWorkList::iterator I = WL.begin() + size, E = WL.end(); 1827 std::reverse(I, E); 1828} 1829 1830static void EnqueueOverloadExpr(VisitorWorkList &WL, CXCursor Parent, 1831 OverloadExpr *E) { 1832 WL.push_back(OverloadExprParts(E, Parent)); 1833} 1834 1835void CursorVisitor::EnqueueWorkList(VisitorWorkList &WL, Stmt *S) { 1836 CXCursor C = MakeCXCursor(S, StmtParent, TU); 1837 switch (S->getStmtClass()) { 1838 default: 1839 EnqueueChildren(WL, C, S); 1840 break; 1841 case Stmt::CompoundLiteralExprClass: { 1842 CompoundLiteralExpr *CL = cast<CompoundLiteralExpr>(S); 1843 EnqueueChildren(WL, C, CL); 1844 WLAddTypeLoc(WL, C, CL->getTypeSourceInfo()); 1845 break; 1846 } 1847 case Stmt::CXXOperatorCallExprClass: { 1848 CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(S); 1849 // Note that we enqueue things in reverse order so that 1850 // they are visited correctly by the DFS. 1851 for (unsigned I = 1, N = CE->getNumArgs(); I != N; ++I) 1852 WLAddStmt(WL, C, CE->getArg(N-I)); 1853 1854 WLAddStmt(WL, C, CE->getCallee()); 1855 WLAddStmt(WL, C, CE->getArg(0)); 1856 break; 1857 } 1858 case Stmt::BinaryOperatorClass: { 1859 BinaryOperator *B = cast<BinaryOperator>(S); 1860 WLAddStmt(WL, C, B->getRHS()); 1861 WLAddStmt(WL, C, B->getLHS()); 1862 break; 1863 } 1864 case Stmt::ForStmtClass: { 1865 ForStmt *FS = cast<ForStmt>(S); 1866 WLAddStmt(WL, C, FS->getBody()); 1867 WLAddStmt(WL, C, FS->getInc()); 1868 WLAddStmt(WL, C, FS->getCond()); 1869 WLAddDecl(WL, C, FS->getConditionVariable()); 1870 WLAddStmt(WL, C, FS->getInit()); 1871 break; 1872 } 1873 case Stmt::IfStmtClass: { 1874 IfStmt *If = cast<IfStmt>(S); 1875 WLAddStmt(WL, C, If->getElse()); 1876 WLAddStmt(WL, C, If->getThen()); 1877 WLAddStmt(WL, C, If->getCond()); 1878 WLAddDecl(WL, C, If->getConditionVariable()); 1879 break; 1880 } 1881 case Stmt::InitListExprClass: { 1882 InitListExpr *IE = cast<InitListExpr>(S); 1883 // We care about the syntactic form of the initializer list, only. 1884 if (InitListExpr *Syntactic = IE->getSyntacticForm()) 1885 IE = Syntactic; 1886 EnqueueChildren(WL, C, IE); 1887 break; 1888 } 1889 case Stmt::MemberExprClass: { 1890 MemberExpr *M = cast<MemberExpr>(S); 1891 WL.push_back(MemberExprParts(M, C)); 1892 WLAddStmt(WL, C, M->getBase()); 1893 break; 1894 } 1895 case Stmt::ParenExprClass: { 1896 WLAddStmt(WL, C, cast<ParenExpr>(S)->getSubExpr()); 1897 break; 1898 } 1899 case Stmt::SwitchStmtClass: { 1900 SwitchStmt *SS = cast<SwitchStmt>(S); 1901 WLAddStmt(WL, C, SS->getBody()); 1902 WLAddStmt(WL, C, SS->getCond()); 1903 WLAddDecl(WL, C, SS->getConditionVariable()); 1904 break; 1905 } 1906 case Stmt::WhileStmtClass: { 1907 WhileStmt *W = cast<WhileStmt>(S); 1908 WLAddStmt(WL, C, W->getBody()); 1909 WLAddStmt(WL, C, W->getCond()); 1910 WLAddDecl(WL, C, W->getConditionVariable()); 1911 break; 1912 } 1913 case Stmt::UnresolvedLookupExprClass: 1914 EnqueueOverloadExpr(WL, C, cast<OverloadExpr>(S)); 1915 break; 1916 case Stmt::UnresolvedMemberExprClass: { 1917 UnresolvedMemberExpr *U = cast<UnresolvedMemberExpr>(S); 1918 EnqueueOverloadExpr(WL, C, U); 1919 if (!U->isImplicitAccess()) 1920 WLAddStmt(WL, C, U->getBase()); 1921 break; 1922 } 1923 } 1924} 1925 1926bool CursorVisitor::IsInRegionOfInterest(CXCursor C) { 1927 if (RegionOfInterest.isValid()) { 1928 SourceRange Range = getRawCursorExtent(C); 1929 if (Range.isInvalid() || CompareRegionOfInterest(Range)) 1930 return false; 1931 } 1932 return true; 1933} 1934 1935bool CursorVisitor::RunVisitorWorkList(VisitorWorkList &WL) { 1936 while (!WL.empty()) { 1937 // Dequeue the worklist item. 1938 VisitorJob LI = WL.back(); WL.pop_back(); 1939 1940 // Set the Parent field, then back to its old value once we're done. 1941 SetParentRAII SetParent(Parent, StmtParent, LI.getParent()); 1942 1943 switch (LI.getKind()) { 1944 case VisitorJob::DeclVisitKind: { 1945 Decl *D = cast<DeclVisit>(LI).get(); 1946 if (!D) 1947 continue; 1948 1949 // For now, perform default visitation for Decls. 1950 if (Visit(MakeCXCursor(D, TU))) 1951 return true; 1952 1953 continue; 1954 } 1955 case VisitorJob::TypeLocVisitKind: { 1956 // Perform default visitation for TypeLocs. 1957 if (Visit(cast<TypeLocVisit>(LI).get())) 1958 return true; 1959 continue; 1960 } 1961 case VisitorJob::StmtVisitKind: { 1962 Stmt *S = cast<StmtVisit>(LI).get(); 1963 if (!S) 1964 continue; 1965 1966 // Update the current cursor. 1967 CXCursor Cursor = MakeCXCursor(S, StmtParent, TU); 1968 1969 switch (S->getStmtClass()) { 1970 default: { 1971 // Perform default visitation for other cases. 1972 if (Visit(Cursor)) 1973 return true; 1974 continue; 1975 } 1976 case Stmt::BinaryOperatorClass: 1977 case Stmt::CallExprClass: 1978 case Stmt::CaseStmtClass: 1979 case Stmt::CompoundLiteralExprClass: 1980 case Stmt::CompoundStmtClass: 1981 case Stmt::CXXMemberCallExprClass: 1982 case Stmt::CXXOperatorCallExprClass: 1983 case Stmt::DefaultStmtClass: 1984 case Stmt::DoStmtClass: 1985 case Stmt::ForStmtClass: 1986 case Stmt::IfStmtClass: 1987 case Stmt::InitListExprClass: 1988 case Stmt::MemberExprClass: 1989 case Stmt::ParenExprClass: 1990 case Stmt::SwitchStmtClass: 1991 case Stmt::UnaryOperatorClass: 1992 case Stmt::UnresolvedLookupExprClass: 1993 case Stmt::UnresolvedMemberExprClass: 1994 case Stmt::WhileStmtClass: 1995 { 1996 if (!IsInRegionOfInterest(Cursor)) 1997 continue; 1998 switch (Visitor(Cursor, Parent, ClientData)) { 1999 case CXChildVisit_Break: 2000 return true; 2001 case CXChildVisit_Continue: 2002 break; 2003 case CXChildVisit_Recurse: 2004 EnqueueWorkList(WL, S); 2005 break; 2006 } 2007 } 2008 } 2009 continue; 2010 } 2011 case VisitorJob::MemberExprPartsKind: { 2012 // Handle the other pieces in the MemberExpr besides the base. 2013 MemberExpr *M = cast<MemberExprParts>(LI).get(); 2014 2015 // Visit the nested-name-specifier 2016 if (NestedNameSpecifier *Qualifier = M->getQualifier()) 2017 if (VisitNestedNameSpecifier(Qualifier, M->getQualifierRange())) 2018 return true; 2019 2020 // Visit the declaration name. 2021 if (VisitDeclarationNameInfo(M->getMemberNameInfo())) 2022 return true; 2023 2024 // Visit the explicitly-specified template arguments, if any. 2025 if (M->hasExplicitTemplateArgs()) { 2026 for (const TemplateArgumentLoc *Arg = M->getTemplateArgs(), 2027 *ArgEnd = Arg + M->getNumTemplateArgs(); 2028 Arg != ArgEnd; ++Arg) { 2029 if (VisitTemplateArgumentLoc(*Arg)) 2030 return true; 2031 } 2032 } 2033 continue; 2034 } 2035 case VisitorJob::OverloadExprPartsKind: { 2036 OverloadExpr *O = cast<OverloadExprParts>(LI).get(); 2037 // Visit the nested-name-specifier. 2038 if (NestedNameSpecifier *Qualifier = O->getQualifier()) 2039 if (VisitNestedNameSpecifier(Qualifier, O->getQualifierRange())) 2040 return true; 2041 // Visit the declaration name. 2042 if (VisitDeclarationNameInfo(O->getNameInfo())) 2043 return true; 2044 // Visit the overloaded declaration reference. 2045 if (Visit(MakeCursorOverloadedDeclRef(O, TU))) 2046 return true; 2047 // Visit the explicitly-specified template arguments. 2048 if (const ExplicitTemplateArgumentList *ArgList 2049 = O->getOptionalExplicitTemplateArgs()) { 2050 for (const TemplateArgumentLoc *Arg = ArgList->getTemplateArgs(), 2051 *ArgEnd = Arg + ArgList->NumTemplateArgs; 2052 Arg != ArgEnd; ++Arg) { 2053 if (VisitTemplateArgumentLoc(*Arg)) 2054 return true; 2055 } 2056 } 2057 continue; 2058 } 2059 } 2060 } 2061 return false; 2062} 2063 2064bool CursorVisitor::VisitDataRecursive(Stmt *S) { 2065 VisitorWorkList WL; 2066 EnqueueWorkList(WL, S); 2067 return RunVisitorWorkList(WL); 2068} 2069 2070//===----------------------------------------------------------------------===// 2071// Misc. API hooks. 2072//===----------------------------------------------------------------------===// 2073 2074static llvm::sys::Mutex EnableMultithreadingMutex; 2075static bool EnabledMultithreading; 2076 2077extern "C" { 2078CXIndex clang_createIndex(int excludeDeclarationsFromPCH, 2079 int displayDiagnostics) { 2080 // Disable pretty stack trace functionality, which will otherwise be a very 2081 // poor citizen of the world and set up all sorts of signal handlers. 2082 llvm::DisablePrettyStackTrace = true; 2083 2084 // We use crash recovery to make some of our APIs more reliable, implicitly 2085 // enable it. 2086 llvm::CrashRecoveryContext::Enable(); 2087 2088 // Enable support for multithreading in LLVM. 2089 { 2090 llvm::sys::ScopedLock L(EnableMultithreadingMutex); 2091 if (!EnabledMultithreading) { 2092 llvm::llvm_start_multithreaded(); 2093 EnabledMultithreading = true; 2094 } 2095 } 2096 2097 CIndexer *CIdxr = new CIndexer(); 2098 if (excludeDeclarationsFromPCH) 2099 CIdxr->setOnlyLocalDecls(); 2100 if (displayDiagnostics) 2101 CIdxr->setDisplayDiagnostics(); 2102 return CIdxr; 2103} 2104 2105void clang_disposeIndex(CXIndex CIdx) { 2106 if (CIdx) 2107 delete static_cast<CIndexer *>(CIdx); 2108} 2109 2110CXTranslationUnit clang_createTranslationUnit(CXIndex CIdx, 2111 const char *ast_filename) { 2112 if (!CIdx) 2113 return 0; 2114 2115 CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx); 2116 FileSystemOptions FileSystemOpts; 2117 FileSystemOpts.WorkingDir = CXXIdx->getWorkingDirectory(); 2118 2119 llvm::IntrusiveRefCntPtr<Diagnostic> Diags; 2120 return ASTUnit::LoadFromASTFile(ast_filename, Diags, FileSystemOpts, 2121 CXXIdx->getOnlyLocalDecls(), 2122 0, 0, true); 2123} 2124 2125unsigned clang_defaultEditingTranslationUnitOptions() { 2126 return CXTranslationUnit_PrecompiledPreamble | 2127 CXTranslationUnit_CacheCompletionResults | 2128 CXTranslationUnit_CXXPrecompiledPreamble; 2129} 2130 2131CXTranslationUnit 2132clang_createTranslationUnitFromSourceFile(CXIndex CIdx, 2133 const char *source_filename, 2134 int num_command_line_args, 2135 const char * const *command_line_args, 2136 unsigned num_unsaved_files, 2137 struct CXUnsavedFile *unsaved_files) { 2138 return clang_parseTranslationUnit(CIdx, source_filename, 2139 command_line_args, num_command_line_args, 2140 unsaved_files, num_unsaved_files, 2141 CXTranslationUnit_DetailedPreprocessingRecord); 2142} 2143 2144struct ParseTranslationUnitInfo { 2145 CXIndex CIdx; 2146 const char *source_filename; 2147 const char *const *command_line_args; 2148 int num_command_line_args; 2149 struct CXUnsavedFile *unsaved_files; 2150 unsigned num_unsaved_files; 2151 unsigned options; 2152 CXTranslationUnit result; 2153}; 2154static void clang_parseTranslationUnit_Impl(void *UserData) { 2155 ParseTranslationUnitInfo *PTUI = 2156 static_cast<ParseTranslationUnitInfo*>(UserData); 2157 CXIndex CIdx = PTUI->CIdx; 2158 const char *source_filename = PTUI->source_filename; 2159 const char * const *command_line_args = PTUI->command_line_args; 2160 int num_command_line_args = PTUI->num_command_line_args; 2161 struct CXUnsavedFile *unsaved_files = PTUI->unsaved_files; 2162 unsigned num_unsaved_files = PTUI->num_unsaved_files; 2163 unsigned options = PTUI->options; 2164 PTUI->result = 0; 2165 2166 if (!CIdx) 2167 return; 2168 2169 CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx); 2170 2171 bool PrecompilePreamble = options & CXTranslationUnit_PrecompiledPreamble; 2172 bool CompleteTranslationUnit 2173 = ((options & CXTranslationUnit_Incomplete) == 0); 2174 bool CacheCodeCompetionResults 2175 = options & CXTranslationUnit_CacheCompletionResults; 2176 bool CXXPrecompilePreamble 2177 = options & CXTranslationUnit_CXXPrecompiledPreamble; 2178 bool CXXChainedPCH 2179 = options & CXTranslationUnit_CXXChainedPCH; 2180 2181 // Configure the diagnostics. 2182 DiagnosticOptions DiagOpts; 2183 llvm::IntrusiveRefCntPtr<Diagnostic> Diags; 2184 Diags = CompilerInstance::createDiagnostics(DiagOpts, 0, 0); 2185 2186 llvm::SmallVector<ASTUnit::RemappedFile, 4> RemappedFiles; 2187 for (unsigned I = 0; I != num_unsaved_files; ++I) { 2188 llvm::StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length); 2189 const llvm::MemoryBuffer *Buffer 2190 = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename); 2191 RemappedFiles.push_back(std::make_pair(unsaved_files[I].Filename, 2192 Buffer)); 2193 } 2194 2195 llvm::SmallVector<const char *, 16> Args; 2196 2197 // The 'source_filename' argument is optional. If the caller does not 2198 // specify it then it is assumed that the source file is specified 2199 // in the actual argument list. 2200 if (source_filename) 2201 Args.push_back(source_filename); 2202 2203 // Since the Clang C library is primarily used by batch tools dealing with 2204 // (often very broken) source code, where spell-checking can have a 2205 // significant negative impact on performance (particularly when 2206 // precompiled headers are involved), we disable it by default. 2207 // Only do this if we haven't found a spell-checking-related argument. 2208 bool FoundSpellCheckingArgument = false; 2209 for (int I = 0; I != num_command_line_args; ++I) { 2210 if (strcmp(command_line_args[I], "-fno-spell-checking") == 0 || 2211 strcmp(command_line_args[I], "-fspell-checking") == 0) { 2212 FoundSpellCheckingArgument = true; 2213 break; 2214 } 2215 } 2216 if (!FoundSpellCheckingArgument) 2217 Args.push_back("-fno-spell-checking"); 2218 2219 Args.insert(Args.end(), command_line_args, 2220 command_line_args + num_command_line_args); 2221 2222 // Do we need the detailed preprocessing record? 2223 if (options & CXTranslationUnit_DetailedPreprocessingRecord) { 2224 Args.push_back("-Xclang"); 2225 Args.push_back("-detailed-preprocessing-record"); 2226 } 2227 2228 unsigned NumErrors = Diags->getNumErrors(); 2229 llvm::OwningPtr<ASTUnit> Unit( 2230 ASTUnit::LoadFromCommandLine(Args.data(), Args.data() + Args.size(), 2231 Diags, 2232 CXXIdx->getClangResourcesPath(), 2233 CXXIdx->getOnlyLocalDecls(), 2234 /*CaptureDiagnostics=*/true, 2235 RemappedFiles.data(), 2236 RemappedFiles.size(), 2237 PrecompilePreamble, 2238 CompleteTranslationUnit, 2239 CacheCodeCompetionResults, 2240 CXXPrecompilePreamble, 2241 CXXChainedPCH)); 2242 2243 if (NumErrors != Diags->getNumErrors()) { 2244 // Make sure to check that 'Unit' is non-NULL. 2245 if (CXXIdx->getDisplayDiagnostics() && Unit.get()) { 2246 for (ASTUnit::stored_diag_iterator D = Unit->stored_diag_begin(), 2247 DEnd = Unit->stored_diag_end(); 2248 D != DEnd; ++D) { 2249 CXStoredDiagnostic Diag(*D, Unit->getASTContext().getLangOptions()); 2250 CXString Msg = clang_formatDiagnostic(&Diag, 2251 clang_defaultDiagnosticDisplayOptions()); 2252 fprintf(stderr, "%s\n", clang_getCString(Msg)); 2253 clang_disposeString(Msg); 2254 } 2255#ifdef LLVM_ON_WIN32 2256 // On Windows, force a flush, since there may be multiple copies of 2257 // stderr and stdout in the file system, all with different buffers 2258 // but writing to the same device. 2259 fflush(stderr); 2260#endif 2261 } 2262 } 2263 2264 PTUI->result = Unit.take(); 2265} 2266CXTranslationUnit clang_parseTranslationUnit(CXIndex CIdx, 2267 const char *source_filename, 2268 const char * const *command_line_args, 2269 int num_command_line_args, 2270 struct CXUnsavedFile *unsaved_files, 2271 unsigned num_unsaved_files, 2272 unsigned options) { 2273 ParseTranslationUnitInfo PTUI = { CIdx, source_filename, command_line_args, 2274 num_command_line_args, unsaved_files, 2275 num_unsaved_files, options, 0 }; 2276 llvm::CrashRecoveryContext CRC; 2277 2278 if (!RunSafely(CRC, clang_parseTranslationUnit_Impl, &PTUI)) { 2279 fprintf(stderr, "libclang: crash detected during parsing: {\n"); 2280 fprintf(stderr, " 'source_filename' : '%s'\n", source_filename); 2281 fprintf(stderr, " 'command_line_args' : ["); 2282 for (int i = 0; i != num_command_line_args; ++i) { 2283 if (i) 2284 fprintf(stderr, ", "); 2285 fprintf(stderr, "'%s'", command_line_args[i]); 2286 } 2287 fprintf(stderr, "],\n"); 2288 fprintf(stderr, " 'unsaved_files' : ["); 2289 for (unsigned i = 0; i != num_unsaved_files; ++i) { 2290 if (i) 2291 fprintf(stderr, ", "); 2292 fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename, 2293 unsaved_files[i].Length); 2294 } 2295 fprintf(stderr, "],\n"); 2296 fprintf(stderr, " 'options' : %d,\n", options); 2297 fprintf(stderr, "}\n"); 2298 2299 return 0; 2300 } 2301 2302 return PTUI.result; 2303} 2304 2305unsigned clang_defaultSaveOptions(CXTranslationUnit TU) { 2306 return CXSaveTranslationUnit_None; 2307} 2308 2309int clang_saveTranslationUnit(CXTranslationUnit TU, const char *FileName, 2310 unsigned options) { 2311 if (!TU) 2312 return 1; 2313 2314 return static_cast<ASTUnit *>(TU)->Save(FileName); 2315} 2316 2317void clang_disposeTranslationUnit(CXTranslationUnit CTUnit) { 2318 if (CTUnit) { 2319 // If the translation unit has been marked as unsafe to free, just discard 2320 // it. 2321 if (static_cast<ASTUnit *>(CTUnit)->isUnsafeToFree()) 2322 return; 2323 2324 delete static_cast<ASTUnit *>(CTUnit); 2325 } 2326} 2327 2328unsigned clang_defaultReparseOptions(CXTranslationUnit TU) { 2329 return CXReparse_None; 2330} 2331 2332struct ReparseTranslationUnitInfo { 2333 CXTranslationUnit TU; 2334 unsigned num_unsaved_files; 2335 struct CXUnsavedFile *unsaved_files; 2336 unsigned options; 2337 int result; 2338}; 2339 2340static void clang_reparseTranslationUnit_Impl(void *UserData) { 2341 ReparseTranslationUnitInfo *RTUI = 2342 static_cast<ReparseTranslationUnitInfo*>(UserData); 2343 CXTranslationUnit TU = RTUI->TU; 2344 unsigned num_unsaved_files = RTUI->num_unsaved_files; 2345 struct CXUnsavedFile *unsaved_files = RTUI->unsaved_files; 2346 unsigned options = RTUI->options; 2347 (void) options; 2348 RTUI->result = 1; 2349 2350 if (!TU) 2351 return; 2352 2353 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 2354 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 2355 2356 llvm::SmallVector<ASTUnit::RemappedFile, 4> RemappedFiles; 2357 for (unsigned I = 0; I != num_unsaved_files; ++I) { 2358 llvm::StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length); 2359 const llvm::MemoryBuffer *Buffer 2360 = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename); 2361 RemappedFiles.push_back(std::make_pair(unsaved_files[I].Filename, 2362 Buffer)); 2363 } 2364 2365 if (!CXXUnit->Reparse(RemappedFiles.data(), RemappedFiles.size())) 2366 RTUI->result = 0; 2367} 2368 2369int clang_reparseTranslationUnit(CXTranslationUnit TU, 2370 unsigned num_unsaved_files, 2371 struct CXUnsavedFile *unsaved_files, 2372 unsigned options) { 2373 ReparseTranslationUnitInfo RTUI = { TU, num_unsaved_files, unsaved_files, 2374 options, 0 }; 2375 llvm::CrashRecoveryContext CRC; 2376 2377 if (!RunSafely(CRC, clang_reparseTranslationUnit_Impl, &RTUI)) { 2378 fprintf(stderr, "libclang: crash detected during reparsing\n"); 2379 static_cast<ASTUnit *>(TU)->setUnsafeToFree(true); 2380 return 1; 2381 } 2382 2383 2384 return RTUI.result; 2385} 2386 2387 2388CXString clang_getTranslationUnitSpelling(CXTranslationUnit CTUnit) { 2389 if (!CTUnit) 2390 return createCXString(""); 2391 2392 ASTUnit *CXXUnit = static_cast<ASTUnit *>(CTUnit); 2393 return createCXString(CXXUnit->getOriginalSourceFileName(), true); 2394} 2395 2396CXCursor clang_getTranslationUnitCursor(CXTranslationUnit TU) { 2397 CXCursor Result = { CXCursor_TranslationUnit, { 0, 0, TU } }; 2398 return Result; 2399} 2400 2401} // end: extern "C" 2402 2403//===----------------------------------------------------------------------===// 2404// CXSourceLocation and CXSourceRange Operations. 2405//===----------------------------------------------------------------------===// 2406 2407extern "C" { 2408CXSourceLocation clang_getNullLocation() { 2409 CXSourceLocation Result = { { 0, 0 }, 0 }; 2410 return Result; 2411} 2412 2413unsigned clang_equalLocations(CXSourceLocation loc1, CXSourceLocation loc2) { 2414 return (loc1.ptr_data[0] == loc2.ptr_data[0] && 2415 loc1.ptr_data[1] == loc2.ptr_data[1] && 2416 loc1.int_data == loc2.int_data); 2417} 2418 2419CXSourceLocation clang_getLocation(CXTranslationUnit tu, 2420 CXFile file, 2421 unsigned line, 2422 unsigned column) { 2423 if (!tu || !file) 2424 return clang_getNullLocation(); 2425 2426 ASTUnit *CXXUnit = static_cast<ASTUnit *>(tu); 2427 SourceLocation SLoc 2428 = CXXUnit->getSourceManager().getLocation( 2429 static_cast<const FileEntry *>(file), 2430 line, column); 2431 if (SLoc.isInvalid()) return clang_getNullLocation(); 2432 2433 return cxloc::translateSourceLocation(CXXUnit->getASTContext(), SLoc); 2434} 2435 2436CXSourceLocation clang_getLocationForOffset(CXTranslationUnit tu, 2437 CXFile file, 2438 unsigned offset) { 2439 if (!tu || !file) 2440 return clang_getNullLocation(); 2441 2442 ASTUnit *CXXUnit = static_cast<ASTUnit *>(tu); 2443 SourceLocation Start 2444 = CXXUnit->getSourceManager().getLocation( 2445 static_cast<const FileEntry *>(file), 2446 1, 1); 2447 if (Start.isInvalid()) return clang_getNullLocation(); 2448 2449 SourceLocation SLoc = Start.getFileLocWithOffset(offset); 2450 2451 if (SLoc.isInvalid()) return clang_getNullLocation(); 2452 2453 return cxloc::translateSourceLocation(CXXUnit->getASTContext(), SLoc); 2454} 2455 2456CXSourceRange clang_getNullRange() { 2457 CXSourceRange Result = { { 0, 0 }, 0, 0 }; 2458 return Result; 2459} 2460 2461CXSourceRange clang_getRange(CXSourceLocation begin, CXSourceLocation end) { 2462 if (begin.ptr_data[0] != end.ptr_data[0] || 2463 begin.ptr_data[1] != end.ptr_data[1]) 2464 return clang_getNullRange(); 2465 2466 CXSourceRange Result = { { begin.ptr_data[0], begin.ptr_data[1] }, 2467 begin.int_data, end.int_data }; 2468 return Result; 2469} 2470 2471void clang_getInstantiationLocation(CXSourceLocation location, 2472 CXFile *file, 2473 unsigned *line, 2474 unsigned *column, 2475 unsigned *offset) { 2476 SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data); 2477 2478 if (!location.ptr_data[0] || Loc.isInvalid()) { 2479 if (file) 2480 *file = 0; 2481 if (line) 2482 *line = 0; 2483 if (column) 2484 *column = 0; 2485 if (offset) 2486 *offset = 0; 2487 return; 2488 } 2489 2490 const SourceManager &SM = 2491 *static_cast<const SourceManager*>(location.ptr_data[0]); 2492 SourceLocation InstLoc = SM.getInstantiationLoc(Loc); 2493 2494 if (file) 2495 *file = (void *)SM.getFileEntryForID(SM.getFileID(InstLoc)); 2496 if (line) 2497 *line = SM.getInstantiationLineNumber(InstLoc); 2498 if (column) 2499 *column = SM.getInstantiationColumnNumber(InstLoc); 2500 if (offset) 2501 *offset = SM.getDecomposedLoc(InstLoc).second; 2502} 2503 2504void clang_getSpellingLocation(CXSourceLocation location, 2505 CXFile *file, 2506 unsigned *line, 2507 unsigned *column, 2508 unsigned *offset) { 2509 SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data); 2510 2511 if (!location.ptr_data[0] || Loc.isInvalid()) { 2512 if (file) 2513 *file = 0; 2514 if (line) 2515 *line = 0; 2516 if (column) 2517 *column = 0; 2518 if (offset) 2519 *offset = 0; 2520 return; 2521 } 2522 2523 const SourceManager &SM = 2524 *static_cast<const SourceManager*>(location.ptr_data[0]); 2525 SourceLocation SpellLoc = Loc; 2526 if (SpellLoc.isMacroID()) { 2527 SourceLocation SimpleSpellingLoc = SM.getImmediateSpellingLoc(SpellLoc); 2528 if (SimpleSpellingLoc.isFileID() && 2529 SM.getFileEntryForID(SM.getDecomposedLoc(SimpleSpellingLoc).first)) 2530 SpellLoc = SimpleSpellingLoc; 2531 else 2532 SpellLoc = SM.getInstantiationLoc(SpellLoc); 2533 } 2534 2535 std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(SpellLoc); 2536 FileID FID = LocInfo.first; 2537 unsigned FileOffset = LocInfo.second; 2538 2539 if (file) 2540 *file = (void *)SM.getFileEntryForID(FID); 2541 if (line) 2542 *line = SM.getLineNumber(FID, FileOffset); 2543 if (column) 2544 *column = SM.getColumnNumber(FID, FileOffset); 2545 if (offset) 2546 *offset = FileOffset; 2547} 2548 2549CXSourceLocation clang_getRangeStart(CXSourceRange range) { 2550 CXSourceLocation Result = { { range.ptr_data[0], range.ptr_data[1] }, 2551 range.begin_int_data }; 2552 return Result; 2553} 2554 2555CXSourceLocation clang_getRangeEnd(CXSourceRange range) { 2556 CXSourceLocation Result = { { range.ptr_data[0], range.ptr_data[1] }, 2557 range.end_int_data }; 2558 return Result; 2559} 2560 2561} // end: extern "C" 2562 2563//===----------------------------------------------------------------------===// 2564// CXFile Operations. 2565//===----------------------------------------------------------------------===// 2566 2567extern "C" { 2568CXString clang_getFileName(CXFile SFile) { 2569 if (!SFile) 2570 return createCXString(NULL); 2571 2572 FileEntry *FEnt = static_cast<FileEntry *>(SFile); 2573 return createCXString(FEnt->getName()); 2574} 2575 2576time_t clang_getFileTime(CXFile SFile) { 2577 if (!SFile) 2578 return 0; 2579 2580 FileEntry *FEnt = static_cast<FileEntry *>(SFile); 2581 return FEnt->getModificationTime(); 2582} 2583 2584CXFile clang_getFile(CXTranslationUnit tu, const char *file_name) { 2585 if (!tu) 2586 return 0; 2587 2588 ASTUnit *CXXUnit = static_cast<ASTUnit *>(tu); 2589 2590 FileManager &FMgr = CXXUnit->getFileManager(); 2591 const FileEntry *File = FMgr.getFile(file_name, file_name+strlen(file_name), 2592 CXXUnit->getFileSystemOpts()); 2593 return const_cast<FileEntry *>(File); 2594} 2595 2596} // end: extern "C" 2597 2598//===----------------------------------------------------------------------===// 2599// CXCursor Operations. 2600//===----------------------------------------------------------------------===// 2601 2602static Decl *getDeclFromExpr(Stmt *E) { 2603 if (CastExpr *CE = dyn_cast<CastExpr>(E)) 2604 return getDeclFromExpr(CE->getSubExpr()); 2605 2606 if (DeclRefExpr *RefExpr = dyn_cast<DeclRefExpr>(E)) 2607 return RefExpr->getDecl(); 2608 if (BlockDeclRefExpr *RefExpr = dyn_cast<BlockDeclRefExpr>(E)) 2609 return RefExpr->getDecl(); 2610 if (MemberExpr *ME = dyn_cast<MemberExpr>(E)) 2611 return ME->getMemberDecl(); 2612 if (ObjCIvarRefExpr *RE = dyn_cast<ObjCIvarRefExpr>(E)) 2613 return RE->getDecl(); 2614 if (ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(E)) 2615 return PRE->getProperty(); 2616 2617 if (CallExpr *CE = dyn_cast<CallExpr>(E)) 2618 return getDeclFromExpr(CE->getCallee()); 2619 if (CXXConstructExpr *CE = llvm::dyn_cast<CXXConstructExpr>(E)) 2620 if (!CE->isElidable()) 2621 return CE->getConstructor(); 2622 if (ObjCMessageExpr *OME = dyn_cast<ObjCMessageExpr>(E)) 2623 return OME->getMethodDecl(); 2624 2625 if (ObjCProtocolExpr *PE = dyn_cast<ObjCProtocolExpr>(E)) 2626 return PE->getProtocol(); 2627 2628 return 0; 2629} 2630 2631static SourceLocation getLocationFromExpr(Expr *E) { 2632 if (ObjCMessageExpr *Msg = dyn_cast<ObjCMessageExpr>(E)) 2633 return /*FIXME:*/Msg->getLeftLoc(); 2634 if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) 2635 return DRE->getLocation(); 2636 if (BlockDeclRefExpr *RefExpr = dyn_cast<BlockDeclRefExpr>(E)) 2637 return RefExpr->getLocation(); 2638 if (MemberExpr *Member = dyn_cast<MemberExpr>(E)) 2639 return Member->getMemberLoc(); 2640 if (ObjCIvarRefExpr *Ivar = dyn_cast<ObjCIvarRefExpr>(E)) 2641 return Ivar->getLocation(); 2642 return E->getLocStart(); 2643} 2644 2645extern "C" { 2646 2647unsigned clang_visitChildren(CXCursor parent, 2648 CXCursorVisitor visitor, 2649 CXClientData client_data) { 2650 ASTUnit *CXXUnit = getCursorASTUnit(parent); 2651 2652 CursorVisitor CursorVis(CXXUnit, visitor, client_data, 2653 CXXUnit->getMaxPCHLevel()); 2654 return CursorVis.VisitChildren(parent); 2655} 2656 2657#ifndef __has_feature 2658#define __has_feature(x) 0 2659#endif 2660#if __has_feature(blocks) 2661typedef enum CXChildVisitResult 2662 (^CXCursorVisitorBlock)(CXCursor cursor, CXCursor parent); 2663 2664static enum CXChildVisitResult visitWithBlock(CXCursor cursor, CXCursor parent, 2665 CXClientData client_data) { 2666 CXCursorVisitorBlock block = (CXCursorVisitorBlock)client_data; 2667 return block(cursor, parent); 2668} 2669#else 2670// If we are compiled with a compiler that doesn't have native blocks support, 2671// define and call the block manually, so the 2672typedef struct _CXChildVisitResult 2673{ 2674 void *isa; 2675 int flags; 2676 int reserved; 2677 enum CXChildVisitResult(*invoke)(struct _CXChildVisitResult*, CXCursor, 2678 CXCursor); 2679} *CXCursorVisitorBlock; 2680 2681static enum CXChildVisitResult visitWithBlock(CXCursor cursor, CXCursor parent, 2682 CXClientData client_data) { 2683 CXCursorVisitorBlock block = (CXCursorVisitorBlock)client_data; 2684 return block->invoke(block, cursor, parent); 2685} 2686#endif 2687 2688 2689unsigned clang_visitChildrenWithBlock(CXCursor parent, 2690 CXCursorVisitorBlock block) { 2691 return clang_visitChildren(parent, visitWithBlock, block); 2692} 2693 2694static CXString getDeclSpelling(Decl *D) { 2695 NamedDecl *ND = dyn_cast_or_null<NamedDecl>(D); 2696 if (!ND) 2697 return createCXString(""); 2698 2699 if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(ND)) 2700 return createCXString(OMD->getSelector().getAsString()); 2701 2702 if (ObjCCategoryImplDecl *CIMP = dyn_cast<ObjCCategoryImplDecl>(ND)) 2703 // No, this isn't the same as the code below. getIdentifier() is non-virtual 2704 // and returns different names. NamedDecl returns the class name and 2705 // ObjCCategoryImplDecl returns the category name. 2706 return createCXString(CIMP->getIdentifier()->getNameStart()); 2707 2708 if (isa<UsingDirectiveDecl>(D)) 2709 return createCXString(""); 2710 2711 llvm::SmallString<1024> S; 2712 llvm::raw_svector_ostream os(S); 2713 ND->printName(os); 2714 2715 return createCXString(os.str()); 2716} 2717 2718CXString clang_getCursorSpelling(CXCursor C) { 2719 if (clang_isTranslationUnit(C.kind)) 2720 return clang_getTranslationUnitSpelling(C.data[2]); 2721 2722 if (clang_isReference(C.kind)) { 2723 switch (C.kind) { 2724 case CXCursor_ObjCSuperClassRef: { 2725 ObjCInterfaceDecl *Super = getCursorObjCSuperClassRef(C).first; 2726 return createCXString(Super->getIdentifier()->getNameStart()); 2727 } 2728 case CXCursor_ObjCClassRef: { 2729 ObjCInterfaceDecl *Class = getCursorObjCClassRef(C).first; 2730 return createCXString(Class->getIdentifier()->getNameStart()); 2731 } 2732 case CXCursor_ObjCProtocolRef: { 2733 ObjCProtocolDecl *OID = getCursorObjCProtocolRef(C).first; 2734 assert(OID && "getCursorSpelling(): Missing protocol decl"); 2735 return createCXString(OID->getIdentifier()->getNameStart()); 2736 } 2737 case CXCursor_CXXBaseSpecifier: { 2738 CXXBaseSpecifier *B = getCursorCXXBaseSpecifier(C); 2739 return createCXString(B->getType().getAsString()); 2740 } 2741 case CXCursor_TypeRef: { 2742 TypeDecl *Type = getCursorTypeRef(C).first; 2743 assert(Type && "Missing type decl"); 2744 2745 return createCXString(getCursorContext(C).getTypeDeclType(Type). 2746 getAsString()); 2747 } 2748 case CXCursor_TemplateRef: { 2749 TemplateDecl *Template = getCursorTemplateRef(C).first; 2750 assert(Template && "Missing template decl"); 2751 2752 return createCXString(Template->getNameAsString()); 2753 } 2754 2755 case CXCursor_NamespaceRef: { 2756 NamedDecl *NS = getCursorNamespaceRef(C).first; 2757 assert(NS && "Missing namespace decl"); 2758 2759 return createCXString(NS->getNameAsString()); 2760 } 2761 2762 case CXCursor_MemberRef: { 2763 FieldDecl *Field = getCursorMemberRef(C).first; 2764 assert(Field && "Missing member decl"); 2765 2766 return createCXString(Field->getNameAsString()); 2767 } 2768 2769 case CXCursor_LabelRef: { 2770 LabelStmt *Label = getCursorLabelRef(C).first; 2771 assert(Label && "Missing label"); 2772 2773 return createCXString(Label->getID()->getName()); 2774 } 2775 2776 case CXCursor_OverloadedDeclRef: { 2777 OverloadedDeclRefStorage Storage = getCursorOverloadedDeclRef(C).first; 2778 if (Decl *D = Storage.dyn_cast<Decl *>()) { 2779 if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) 2780 return createCXString(ND->getNameAsString()); 2781 return createCXString(""); 2782 } 2783 if (OverloadExpr *E = Storage.dyn_cast<OverloadExpr *>()) 2784 return createCXString(E->getName().getAsString()); 2785 OverloadedTemplateStorage *Ovl 2786 = Storage.get<OverloadedTemplateStorage*>(); 2787 if (Ovl->size() == 0) 2788 return createCXString(""); 2789 return createCXString((*Ovl->begin())->getNameAsString()); 2790 } 2791 2792 default: 2793 return createCXString("<not implemented>"); 2794 } 2795 } 2796 2797 if (clang_isExpression(C.kind)) { 2798 Decl *D = getDeclFromExpr(getCursorExpr(C)); 2799 if (D) 2800 return getDeclSpelling(D); 2801 return createCXString(""); 2802 } 2803 2804 if (clang_isStatement(C.kind)) { 2805 Stmt *S = getCursorStmt(C); 2806 if (LabelStmt *Label = dyn_cast_or_null<LabelStmt>(S)) 2807 return createCXString(Label->getID()->getName()); 2808 2809 return createCXString(""); 2810 } 2811 2812 if (C.kind == CXCursor_MacroInstantiation) 2813 return createCXString(getCursorMacroInstantiation(C)->getName() 2814 ->getNameStart()); 2815 2816 if (C.kind == CXCursor_MacroDefinition) 2817 return createCXString(getCursorMacroDefinition(C)->getName() 2818 ->getNameStart()); 2819 2820 if (C.kind == CXCursor_InclusionDirective) 2821 return createCXString(getCursorInclusionDirective(C)->getFileName()); 2822 2823 if (clang_isDeclaration(C.kind)) 2824 return getDeclSpelling(getCursorDecl(C)); 2825 2826 return createCXString(""); 2827} 2828 2829CXString clang_getCursorDisplayName(CXCursor C) { 2830 if (!clang_isDeclaration(C.kind)) 2831 return clang_getCursorSpelling(C); 2832 2833 Decl *D = getCursorDecl(C); 2834 if (!D) 2835 return createCXString(""); 2836 2837 PrintingPolicy &Policy = getCursorContext(C).PrintingPolicy; 2838 if (FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D)) 2839 D = FunTmpl->getTemplatedDecl(); 2840 2841 if (FunctionDecl *Function = dyn_cast<FunctionDecl>(D)) { 2842 llvm::SmallString<64> Str; 2843 llvm::raw_svector_ostream OS(Str); 2844 OS << Function->getNameAsString(); 2845 if (Function->getPrimaryTemplate()) 2846 OS << "<>"; 2847 OS << "("; 2848 for (unsigned I = 0, N = Function->getNumParams(); I != N; ++I) { 2849 if (I) 2850 OS << ", "; 2851 OS << Function->getParamDecl(I)->getType().getAsString(Policy); 2852 } 2853 2854 if (Function->isVariadic()) { 2855 if (Function->getNumParams()) 2856 OS << ", "; 2857 OS << "..."; 2858 } 2859 OS << ")"; 2860 return createCXString(OS.str()); 2861 } 2862 2863 if (ClassTemplateDecl *ClassTemplate = dyn_cast<ClassTemplateDecl>(D)) { 2864 llvm::SmallString<64> Str; 2865 llvm::raw_svector_ostream OS(Str); 2866 OS << ClassTemplate->getNameAsString(); 2867 OS << "<"; 2868 TemplateParameterList *Params = ClassTemplate->getTemplateParameters(); 2869 for (unsigned I = 0, N = Params->size(); I != N; ++I) { 2870 if (I) 2871 OS << ", "; 2872 2873 NamedDecl *Param = Params->getParam(I); 2874 if (Param->getIdentifier()) { 2875 OS << Param->getIdentifier()->getName(); 2876 continue; 2877 } 2878 2879 // There is no parameter name, which makes this tricky. Try to come up 2880 // with something useful that isn't too long. 2881 if (TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(Param)) 2882 OS << (TTP->wasDeclaredWithTypename()? "typename" : "class"); 2883 else if (NonTypeTemplateParmDecl *NTTP 2884 = dyn_cast<NonTypeTemplateParmDecl>(Param)) 2885 OS << NTTP->getType().getAsString(Policy); 2886 else 2887 OS << "template<...> class"; 2888 } 2889 2890 OS << ">"; 2891 return createCXString(OS.str()); 2892 } 2893 2894 if (ClassTemplateSpecializationDecl *ClassSpec 2895 = dyn_cast<ClassTemplateSpecializationDecl>(D)) { 2896 // If the type was explicitly written, use that. 2897 if (TypeSourceInfo *TSInfo = ClassSpec->getTypeAsWritten()) 2898 return createCXString(TSInfo->getType().getAsString(Policy)); 2899 2900 llvm::SmallString<64> Str; 2901 llvm::raw_svector_ostream OS(Str); 2902 OS << ClassSpec->getNameAsString(); 2903 OS << TemplateSpecializationType::PrintTemplateArgumentList( 2904 ClassSpec->getTemplateArgs().data(), 2905 ClassSpec->getTemplateArgs().size(), 2906 Policy); 2907 return createCXString(OS.str()); 2908 } 2909 2910 return clang_getCursorSpelling(C); 2911} 2912 2913CXString clang_getCursorKindSpelling(enum CXCursorKind Kind) { 2914 switch (Kind) { 2915 case CXCursor_FunctionDecl: 2916 return createCXString("FunctionDecl"); 2917 case CXCursor_TypedefDecl: 2918 return createCXString("TypedefDecl"); 2919 case CXCursor_EnumDecl: 2920 return createCXString("EnumDecl"); 2921 case CXCursor_EnumConstantDecl: 2922 return createCXString("EnumConstantDecl"); 2923 case CXCursor_StructDecl: 2924 return createCXString("StructDecl"); 2925 case CXCursor_UnionDecl: 2926 return createCXString("UnionDecl"); 2927 case CXCursor_ClassDecl: 2928 return createCXString("ClassDecl"); 2929 case CXCursor_FieldDecl: 2930 return createCXString("FieldDecl"); 2931 case CXCursor_VarDecl: 2932 return createCXString("VarDecl"); 2933 case CXCursor_ParmDecl: 2934 return createCXString("ParmDecl"); 2935 case CXCursor_ObjCInterfaceDecl: 2936 return createCXString("ObjCInterfaceDecl"); 2937 case CXCursor_ObjCCategoryDecl: 2938 return createCXString("ObjCCategoryDecl"); 2939 case CXCursor_ObjCProtocolDecl: 2940 return createCXString("ObjCProtocolDecl"); 2941 case CXCursor_ObjCPropertyDecl: 2942 return createCXString("ObjCPropertyDecl"); 2943 case CXCursor_ObjCIvarDecl: 2944 return createCXString("ObjCIvarDecl"); 2945 case CXCursor_ObjCInstanceMethodDecl: 2946 return createCXString("ObjCInstanceMethodDecl"); 2947 case CXCursor_ObjCClassMethodDecl: 2948 return createCXString("ObjCClassMethodDecl"); 2949 case CXCursor_ObjCImplementationDecl: 2950 return createCXString("ObjCImplementationDecl"); 2951 case CXCursor_ObjCCategoryImplDecl: 2952 return createCXString("ObjCCategoryImplDecl"); 2953 case CXCursor_CXXMethod: 2954 return createCXString("CXXMethod"); 2955 case CXCursor_UnexposedDecl: 2956 return createCXString("UnexposedDecl"); 2957 case CXCursor_ObjCSuperClassRef: 2958 return createCXString("ObjCSuperClassRef"); 2959 case CXCursor_ObjCProtocolRef: 2960 return createCXString("ObjCProtocolRef"); 2961 case CXCursor_ObjCClassRef: 2962 return createCXString("ObjCClassRef"); 2963 case CXCursor_TypeRef: 2964 return createCXString("TypeRef"); 2965 case CXCursor_TemplateRef: 2966 return createCXString("TemplateRef"); 2967 case CXCursor_NamespaceRef: 2968 return createCXString("NamespaceRef"); 2969 case CXCursor_MemberRef: 2970 return createCXString("MemberRef"); 2971 case CXCursor_LabelRef: 2972 return createCXString("LabelRef"); 2973 case CXCursor_OverloadedDeclRef: 2974 return createCXString("OverloadedDeclRef"); 2975 case CXCursor_UnexposedExpr: 2976 return createCXString("UnexposedExpr"); 2977 case CXCursor_BlockExpr: 2978 return createCXString("BlockExpr"); 2979 case CXCursor_DeclRefExpr: 2980 return createCXString("DeclRefExpr"); 2981 case CXCursor_MemberRefExpr: 2982 return createCXString("MemberRefExpr"); 2983 case CXCursor_CallExpr: 2984 return createCXString("CallExpr"); 2985 case CXCursor_ObjCMessageExpr: 2986 return createCXString("ObjCMessageExpr"); 2987 case CXCursor_UnexposedStmt: 2988 return createCXString("UnexposedStmt"); 2989 case CXCursor_LabelStmt: 2990 return createCXString("LabelStmt"); 2991 case CXCursor_InvalidFile: 2992 return createCXString("InvalidFile"); 2993 case CXCursor_InvalidCode: 2994 return createCXString("InvalidCode"); 2995 case CXCursor_NoDeclFound: 2996 return createCXString("NoDeclFound"); 2997 case CXCursor_NotImplemented: 2998 return createCXString("NotImplemented"); 2999 case CXCursor_TranslationUnit: 3000 return createCXString("TranslationUnit"); 3001 case CXCursor_UnexposedAttr: 3002 return createCXString("UnexposedAttr"); 3003 case CXCursor_IBActionAttr: 3004 return createCXString("attribute(ibaction)"); 3005 case CXCursor_IBOutletAttr: 3006 return createCXString("attribute(iboutlet)"); 3007 case CXCursor_IBOutletCollectionAttr: 3008 return createCXString("attribute(iboutletcollection)"); 3009 case CXCursor_PreprocessingDirective: 3010 return createCXString("preprocessing directive"); 3011 case CXCursor_MacroDefinition: 3012 return createCXString("macro definition"); 3013 case CXCursor_MacroInstantiation: 3014 return createCXString("macro instantiation"); 3015 case CXCursor_InclusionDirective: 3016 return createCXString("inclusion directive"); 3017 case CXCursor_Namespace: 3018 return createCXString("Namespace"); 3019 case CXCursor_LinkageSpec: 3020 return createCXString("LinkageSpec"); 3021 case CXCursor_CXXBaseSpecifier: 3022 return createCXString("C++ base class specifier"); 3023 case CXCursor_Constructor: 3024 return createCXString("CXXConstructor"); 3025 case CXCursor_Destructor: 3026 return createCXString("CXXDestructor"); 3027 case CXCursor_ConversionFunction: 3028 return createCXString("CXXConversion"); 3029 case CXCursor_TemplateTypeParameter: 3030 return createCXString("TemplateTypeParameter"); 3031 case CXCursor_NonTypeTemplateParameter: 3032 return createCXString("NonTypeTemplateParameter"); 3033 case CXCursor_TemplateTemplateParameter: 3034 return createCXString("TemplateTemplateParameter"); 3035 case CXCursor_FunctionTemplate: 3036 return createCXString("FunctionTemplate"); 3037 case CXCursor_ClassTemplate: 3038 return createCXString("ClassTemplate"); 3039 case CXCursor_ClassTemplatePartialSpecialization: 3040 return createCXString("ClassTemplatePartialSpecialization"); 3041 case CXCursor_NamespaceAlias: 3042 return createCXString("NamespaceAlias"); 3043 case CXCursor_UsingDirective: 3044 return createCXString("UsingDirective"); 3045 case CXCursor_UsingDeclaration: 3046 return createCXString("UsingDeclaration"); 3047 } 3048 3049 llvm_unreachable("Unhandled CXCursorKind"); 3050 return createCXString(NULL); 3051} 3052 3053enum CXChildVisitResult GetCursorVisitor(CXCursor cursor, 3054 CXCursor parent, 3055 CXClientData client_data) { 3056 CXCursor *BestCursor = static_cast<CXCursor *>(client_data); 3057 3058 // If our current best cursor is the construction of a temporary object, 3059 // don't replace that cursor with a type reference, because we want 3060 // clang_getCursor() to point at the constructor. 3061 if (clang_isExpression(BestCursor->kind) && 3062 isa<CXXTemporaryObjectExpr>(getCursorExpr(*BestCursor)) && 3063 cursor.kind == CXCursor_TypeRef) 3064 return CXChildVisit_Recurse; 3065 3066 *BestCursor = cursor; 3067 return CXChildVisit_Recurse; 3068} 3069 3070CXCursor clang_getCursor(CXTranslationUnit TU, CXSourceLocation Loc) { 3071 if (!TU) 3072 return clang_getNullCursor(); 3073 3074 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3075 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 3076 3077 // Translate the given source location to make it point at the beginning of 3078 // the token under the cursor. 3079 SourceLocation SLoc = cxloc::translateSourceLocation(Loc); 3080 3081 // Guard against an invalid SourceLocation, or we may assert in one 3082 // of the following calls. 3083 if (SLoc.isInvalid()) 3084 return clang_getNullCursor(); 3085 3086 bool Logging = getenv("LIBCLANG_LOGGING"); 3087 SLoc = Lexer::GetBeginningOfToken(SLoc, CXXUnit->getSourceManager(), 3088 CXXUnit->getASTContext().getLangOptions()); 3089 3090 CXCursor Result = MakeCXCursorInvalid(CXCursor_NoDeclFound); 3091 if (SLoc.isValid()) { 3092 // FIXME: Would be great to have a "hint" cursor, then walk from that 3093 // hint cursor upward until we find a cursor whose source range encloses 3094 // the region of interest, rather than starting from the translation unit. 3095 CXCursor Parent = clang_getTranslationUnitCursor(CXXUnit); 3096 CursorVisitor CursorVis(CXXUnit, GetCursorVisitor, &Result, 3097 Decl::MaxPCHLevel, SourceLocation(SLoc)); 3098 CursorVis.VisitChildren(Parent); 3099 } 3100 3101 if (Logging) { 3102 CXFile SearchFile; 3103 unsigned SearchLine, SearchColumn; 3104 CXFile ResultFile; 3105 unsigned ResultLine, ResultColumn; 3106 CXString SearchFileName, ResultFileName, KindSpelling; 3107 CXSourceLocation ResultLoc = clang_getCursorLocation(Result); 3108 3109 clang_getInstantiationLocation(Loc, &SearchFile, &SearchLine, &SearchColumn, 3110 0); 3111 clang_getInstantiationLocation(ResultLoc, &ResultFile, &ResultLine, 3112 &ResultColumn, 0); 3113 SearchFileName = clang_getFileName(SearchFile); 3114 ResultFileName = clang_getFileName(ResultFile); 3115 KindSpelling = clang_getCursorKindSpelling(Result.kind); 3116 fprintf(stderr, "clang_getCursor(%s:%d:%d) = %s(%s:%d:%d)\n", 3117 clang_getCString(SearchFileName), SearchLine, SearchColumn, 3118 clang_getCString(KindSpelling), 3119 clang_getCString(ResultFileName), ResultLine, ResultColumn); 3120 clang_disposeString(SearchFileName); 3121 clang_disposeString(ResultFileName); 3122 clang_disposeString(KindSpelling); 3123 } 3124 3125 return Result; 3126} 3127 3128CXCursor clang_getNullCursor(void) { 3129 return MakeCXCursorInvalid(CXCursor_InvalidFile); 3130} 3131 3132unsigned clang_equalCursors(CXCursor X, CXCursor Y) { 3133 return X == Y; 3134} 3135 3136unsigned clang_isInvalid(enum CXCursorKind K) { 3137 return K >= CXCursor_FirstInvalid && K <= CXCursor_LastInvalid; 3138} 3139 3140unsigned clang_isDeclaration(enum CXCursorKind K) { 3141 return K >= CXCursor_FirstDecl && K <= CXCursor_LastDecl; 3142} 3143 3144unsigned clang_isReference(enum CXCursorKind K) { 3145 return K >= CXCursor_FirstRef && K <= CXCursor_LastRef; 3146} 3147 3148unsigned clang_isExpression(enum CXCursorKind K) { 3149 return K >= CXCursor_FirstExpr && K <= CXCursor_LastExpr; 3150} 3151 3152unsigned clang_isStatement(enum CXCursorKind K) { 3153 return K >= CXCursor_FirstStmt && K <= CXCursor_LastStmt; 3154} 3155 3156unsigned clang_isTranslationUnit(enum CXCursorKind K) { 3157 return K == CXCursor_TranslationUnit; 3158} 3159 3160unsigned clang_isPreprocessing(enum CXCursorKind K) { 3161 return K >= CXCursor_FirstPreprocessing && K <= CXCursor_LastPreprocessing; 3162} 3163 3164unsigned clang_isUnexposed(enum CXCursorKind K) { 3165 switch (K) { 3166 case CXCursor_UnexposedDecl: 3167 case CXCursor_UnexposedExpr: 3168 case CXCursor_UnexposedStmt: 3169 case CXCursor_UnexposedAttr: 3170 return true; 3171 default: 3172 return false; 3173 } 3174} 3175 3176CXCursorKind clang_getCursorKind(CXCursor C) { 3177 return C.kind; 3178} 3179 3180CXSourceLocation clang_getCursorLocation(CXCursor C) { 3181 if (clang_isReference(C.kind)) { 3182 switch (C.kind) { 3183 case CXCursor_ObjCSuperClassRef: { 3184 std::pair<ObjCInterfaceDecl *, SourceLocation> P 3185 = getCursorObjCSuperClassRef(C); 3186 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 3187 } 3188 3189 case CXCursor_ObjCProtocolRef: { 3190 std::pair<ObjCProtocolDecl *, SourceLocation> P 3191 = getCursorObjCProtocolRef(C); 3192 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 3193 } 3194 3195 case CXCursor_ObjCClassRef: { 3196 std::pair<ObjCInterfaceDecl *, SourceLocation> P 3197 = getCursorObjCClassRef(C); 3198 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 3199 } 3200 3201 case CXCursor_TypeRef: { 3202 std::pair<TypeDecl *, SourceLocation> P = getCursorTypeRef(C); 3203 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 3204 } 3205 3206 case CXCursor_TemplateRef: { 3207 std::pair<TemplateDecl *, SourceLocation> P = getCursorTemplateRef(C); 3208 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 3209 } 3210 3211 case CXCursor_NamespaceRef: { 3212 std::pair<NamedDecl *, SourceLocation> P = getCursorNamespaceRef(C); 3213 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 3214 } 3215 3216 case CXCursor_MemberRef: { 3217 std::pair<FieldDecl *, SourceLocation> P = getCursorMemberRef(C); 3218 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 3219 } 3220 3221 case CXCursor_CXXBaseSpecifier: { 3222 CXXBaseSpecifier *BaseSpec = getCursorCXXBaseSpecifier(C); 3223 if (!BaseSpec) 3224 return clang_getNullLocation(); 3225 3226 if (TypeSourceInfo *TSInfo = BaseSpec->getTypeSourceInfo()) 3227 return cxloc::translateSourceLocation(getCursorContext(C), 3228 TSInfo->getTypeLoc().getBeginLoc()); 3229 3230 return cxloc::translateSourceLocation(getCursorContext(C), 3231 BaseSpec->getSourceRange().getBegin()); 3232 } 3233 3234 case CXCursor_LabelRef: { 3235 std::pair<LabelStmt *, SourceLocation> P = getCursorLabelRef(C); 3236 return cxloc::translateSourceLocation(getCursorContext(C), P.second); 3237 } 3238 3239 case CXCursor_OverloadedDeclRef: 3240 return cxloc::translateSourceLocation(getCursorContext(C), 3241 getCursorOverloadedDeclRef(C).second); 3242 3243 default: 3244 // FIXME: Need a way to enumerate all non-reference cases. 3245 llvm_unreachable("Missed a reference kind"); 3246 } 3247 } 3248 3249 if (clang_isExpression(C.kind)) 3250 return cxloc::translateSourceLocation(getCursorContext(C), 3251 getLocationFromExpr(getCursorExpr(C))); 3252 3253 if (clang_isStatement(C.kind)) 3254 return cxloc::translateSourceLocation(getCursorContext(C), 3255 getCursorStmt(C)->getLocStart()); 3256 3257 if (C.kind == CXCursor_PreprocessingDirective) { 3258 SourceLocation L = cxcursor::getCursorPreprocessingDirective(C).getBegin(); 3259 return cxloc::translateSourceLocation(getCursorContext(C), L); 3260 } 3261 3262 if (C.kind == CXCursor_MacroInstantiation) { 3263 SourceLocation L 3264 = cxcursor::getCursorMacroInstantiation(C)->getSourceRange().getBegin(); 3265 return cxloc::translateSourceLocation(getCursorContext(C), L); 3266 } 3267 3268 if (C.kind == CXCursor_MacroDefinition) { 3269 SourceLocation L = cxcursor::getCursorMacroDefinition(C)->getLocation(); 3270 return cxloc::translateSourceLocation(getCursorContext(C), L); 3271 } 3272 3273 if (C.kind == CXCursor_InclusionDirective) { 3274 SourceLocation L 3275 = cxcursor::getCursorInclusionDirective(C)->getSourceRange().getBegin(); 3276 return cxloc::translateSourceLocation(getCursorContext(C), L); 3277 } 3278 3279 if (C.kind < CXCursor_FirstDecl || C.kind > CXCursor_LastDecl) 3280 return clang_getNullLocation(); 3281 3282 Decl *D = getCursorDecl(C); 3283 SourceLocation Loc = D->getLocation(); 3284 if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(D)) 3285 Loc = Class->getClassLoc(); 3286 // FIXME: Multiple variables declared in a single declaration 3287 // currently lack the information needed to correctly determine their 3288 // ranges when accounting for the type-specifier. We use context 3289 // stored in the CXCursor to determine if the VarDecl is in a DeclGroup, 3290 // and if so, whether it is the first decl. 3291 if (VarDecl *VD = dyn_cast<VarDecl>(D)) { 3292 if (!cxcursor::isFirstInDeclGroup(C)) 3293 Loc = VD->getLocation(); 3294 } 3295 3296 return cxloc::translateSourceLocation(getCursorContext(C), Loc); 3297} 3298 3299} // end extern "C" 3300 3301static SourceRange getRawCursorExtent(CXCursor C) { 3302 if (clang_isReference(C.kind)) { 3303 switch (C.kind) { 3304 case CXCursor_ObjCSuperClassRef: 3305 return getCursorObjCSuperClassRef(C).second; 3306 3307 case CXCursor_ObjCProtocolRef: 3308 return getCursorObjCProtocolRef(C).second; 3309 3310 case CXCursor_ObjCClassRef: 3311 return getCursorObjCClassRef(C).second; 3312 3313 case CXCursor_TypeRef: 3314 return getCursorTypeRef(C).second; 3315 3316 case CXCursor_TemplateRef: 3317 return getCursorTemplateRef(C).second; 3318 3319 case CXCursor_NamespaceRef: 3320 return getCursorNamespaceRef(C).second; 3321 3322 case CXCursor_MemberRef: 3323 return getCursorMemberRef(C).second; 3324 3325 case CXCursor_CXXBaseSpecifier: 3326 return getCursorCXXBaseSpecifier(C)->getSourceRange(); 3327 3328 case CXCursor_LabelRef: 3329 return getCursorLabelRef(C).second; 3330 3331 case CXCursor_OverloadedDeclRef: 3332 return getCursorOverloadedDeclRef(C).second; 3333 3334 default: 3335 // FIXME: Need a way to enumerate all non-reference cases. 3336 llvm_unreachable("Missed a reference kind"); 3337 } 3338 } 3339 3340 if (clang_isExpression(C.kind)) 3341 return getCursorExpr(C)->getSourceRange(); 3342 3343 if (clang_isStatement(C.kind)) 3344 return getCursorStmt(C)->getSourceRange(); 3345 3346 if (C.kind == CXCursor_PreprocessingDirective) 3347 return cxcursor::getCursorPreprocessingDirective(C); 3348 3349 if (C.kind == CXCursor_MacroInstantiation) 3350 return cxcursor::getCursorMacroInstantiation(C)->getSourceRange(); 3351 3352 if (C.kind == CXCursor_MacroDefinition) 3353 return cxcursor::getCursorMacroDefinition(C)->getSourceRange(); 3354 3355 if (C.kind == CXCursor_InclusionDirective) 3356 return cxcursor::getCursorInclusionDirective(C)->getSourceRange(); 3357 3358 if (C.kind >= CXCursor_FirstDecl && C.kind <= CXCursor_LastDecl) { 3359 Decl *D = cxcursor::getCursorDecl(C); 3360 SourceRange R = D->getSourceRange(); 3361 // FIXME: Multiple variables declared in a single declaration 3362 // currently lack the information needed to correctly determine their 3363 // ranges when accounting for the type-specifier. We use context 3364 // stored in the CXCursor to determine if the VarDecl is in a DeclGroup, 3365 // and if so, whether it is the first decl. 3366 if (VarDecl *VD = dyn_cast<VarDecl>(D)) { 3367 if (!cxcursor::isFirstInDeclGroup(C)) 3368 R.setBegin(VD->getLocation()); 3369 } 3370 return R; 3371 } 3372 return SourceRange();} 3373 3374extern "C" { 3375 3376CXSourceRange clang_getCursorExtent(CXCursor C) { 3377 SourceRange R = getRawCursorExtent(C); 3378 if (R.isInvalid()) 3379 return clang_getNullRange(); 3380 3381 return cxloc::translateSourceRange(getCursorContext(C), R); 3382} 3383 3384CXCursor clang_getCursorReferenced(CXCursor C) { 3385 if (clang_isInvalid(C.kind)) 3386 return clang_getNullCursor(); 3387 3388 ASTUnit *CXXUnit = getCursorASTUnit(C); 3389 if (clang_isDeclaration(C.kind)) { 3390 Decl *D = getCursorDecl(C); 3391 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) 3392 return MakeCursorOverloadedDeclRef(Using, D->getLocation(), CXXUnit); 3393 if (ObjCClassDecl *Classes = dyn_cast<ObjCClassDecl>(D)) 3394 return MakeCursorOverloadedDeclRef(Classes, D->getLocation(), CXXUnit); 3395 if (ObjCForwardProtocolDecl *Protocols 3396 = dyn_cast<ObjCForwardProtocolDecl>(D)) 3397 return MakeCursorOverloadedDeclRef(Protocols, D->getLocation(), CXXUnit); 3398 3399 return C; 3400 } 3401 3402 if (clang_isExpression(C.kind)) { 3403 Expr *E = getCursorExpr(C); 3404 Decl *D = getDeclFromExpr(E); 3405 if (D) 3406 return MakeCXCursor(D, CXXUnit); 3407 3408 if (OverloadExpr *Ovl = dyn_cast_or_null<OverloadExpr>(E)) 3409 return MakeCursorOverloadedDeclRef(Ovl, CXXUnit); 3410 3411 return clang_getNullCursor(); 3412 } 3413 3414 if (clang_isStatement(C.kind)) { 3415 Stmt *S = getCursorStmt(C); 3416 if (GotoStmt *Goto = dyn_cast_or_null<GotoStmt>(S)) 3417 return MakeCXCursor(Goto->getLabel(), getCursorDecl(C), 3418 getCursorASTUnit(C)); 3419 3420 return clang_getNullCursor(); 3421 } 3422 3423 if (C.kind == CXCursor_MacroInstantiation) { 3424 if (MacroDefinition *Def = getCursorMacroInstantiation(C)->getDefinition()) 3425 return MakeMacroDefinitionCursor(Def, CXXUnit); 3426 } 3427 3428 if (!clang_isReference(C.kind)) 3429 return clang_getNullCursor(); 3430 3431 switch (C.kind) { 3432 case CXCursor_ObjCSuperClassRef: 3433 return MakeCXCursor(getCursorObjCSuperClassRef(C).first, CXXUnit); 3434 3435 case CXCursor_ObjCProtocolRef: { 3436 return MakeCXCursor(getCursorObjCProtocolRef(C).first, CXXUnit); 3437 3438 case CXCursor_ObjCClassRef: 3439 return MakeCXCursor(getCursorObjCClassRef(C).first, CXXUnit); 3440 3441 case CXCursor_TypeRef: 3442 return MakeCXCursor(getCursorTypeRef(C).first, CXXUnit); 3443 3444 case CXCursor_TemplateRef: 3445 return MakeCXCursor(getCursorTemplateRef(C).first, CXXUnit); 3446 3447 case CXCursor_NamespaceRef: 3448 return MakeCXCursor(getCursorNamespaceRef(C).first, CXXUnit); 3449 3450 case CXCursor_MemberRef: 3451 return MakeCXCursor(getCursorMemberRef(C).first, CXXUnit); 3452 3453 case CXCursor_CXXBaseSpecifier: { 3454 CXXBaseSpecifier *B = cxcursor::getCursorCXXBaseSpecifier(C); 3455 return clang_getTypeDeclaration(cxtype::MakeCXType(B->getType(), 3456 CXXUnit)); 3457 } 3458 3459 case CXCursor_LabelRef: 3460 // FIXME: We end up faking the "parent" declaration here because we 3461 // don't want to make CXCursor larger. 3462 return MakeCXCursor(getCursorLabelRef(C).first, 3463 CXXUnit->getASTContext().getTranslationUnitDecl(), 3464 CXXUnit); 3465 3466 case CXCursor_OverloadedDeclRef: 3467 return C; 3468 3469 default: 3470 // We would prefer to enumerate all non-reference cursor kinds here. 3471 llvm_unreachable("Unhandled reference cursor kind"); 3472 break; 3473 } 3474 } 3475 3476 return clang_getNullCursor(); 3477} 3478 3479CXCursor clang_getCursorDefinition(CXCursor C) { 3480 if (clang_isInvalid(C.kind)) 3481 return clang_getNullCursor(); 3482 3483 ASTUnit *CXXUnit = getCursorASTUnit(C); 3484 3485 bool WasReference = false; 3486 if (clang_isReference(C.kind) || clang_isExpression(C.kind)) { 3487 C = clang_getCursorReferenced(C); 3488 WasReference = true; 3489 } 3490 3491 if (C.kind == CXCursor_MacroInstantiation) 3492 return clang_getCursorReferenced(C); 3493 3494 if (!clang_isDeclaration(C.kind)) 3495 return clang_getNullCursor(); 3496 3497 Decl *D = getCursorDecl(C); 3498 if (!D) 3499 return clang_getNullCursor(); 3500 3501 switch (D->getKind()) { 3502 // Declaration kinds that don't really separate the notions of 3503 // declaration and definition. 3504 case Decl::Namespace: 3505 case Decl::Typedef: 3506 case Decl::TemplateTypeParm: 3507 case Decl::EnumConstant: 3508 case Decl::Field: 3509 case Decl::ObjCIvar: 3510 case Decl::ObjCAtDefsField: 3511 case Decl::ImplicitParam: 3512 case Decl::ParmVar: 3513 case Decl::NonTypeTemplateParm: 3514 case Decl::TemplateTemplateParm: 3515 case Decl::ObjCCategoryImpl: 3516 case Decl::ObjCImplementation: 3517 case Decl::AccessSpec: 3518 case Decl::LinkageSpec: 3519 case Decl::ObjCPropertyImpl: 3520 case Decl::FileScopeAsm: 3521 case Decl::StaticAssert: 3522 case Decl::Block: 3523 return C; 3524 3525 // Declaration kinds that don't make any sense here, but are 3526 // nonetheless harmless. 3527 case Decl::TranslationUnit: 3528 break; 3529 3530 // Declaration kinds for which the definition is not resolvable. 3531 case Decl::UnresolvedUsingTypename: 3532 case Decl::UnresolvedUsingValue: 3533 break; 3534 3535 case Decl::UsingDirective: 3536 return MakeCXCursor(cast<UsingDirectiveDecl>(D)->getNominatedNamespace(), 3537 CXXUnit); 3538 3539 case Decl::NamespaceAlias: 3540 return MakeCXCursor(cast<NamespaceAliasDecl>(D)->getNamespace(), CXXUnit); 3541 3542 case Decl::Enum: 3543 case Decl::Record: 3544 case Decl::CXXRecord: 3545 case Decl::ClassTemplateSpecialization: 3546 case Decl::ClassTemplatePartialSpecialization: 3547 if (TagDecl *Def = cast<TagDecl>(D)->getDefinition()) 3548 return MakeCXCursor(Def, CXXUnit); 3549 return clang_getNullCursor(); 3550 3551 case Decl::Function: 3552 case Decl::CXXMethod: 3553 case Decl::CXXConstructor: 3554 case Decl::CXXDestructor: 3555 case Decl::CXXConversion: { 3556 const FunctionDecl *Def = 0; 3557 if (cast<FunctionDecl>(D)->getBody(Def)) 3558 return MakeCXCursor(const_cast<FunctionDecl *>(Def), CXXUnit); 3559 return clang_getNullCursor(); 3560 } 3561 3562 case Decl::Var: { 3563 // Ask the variable if it has a definition. 3564 if (VarDecl *Def = cast<VarDecl>(D)->getDefinition()) 3565 return MakeCXCursor(Def, CXXUnit); 3566 return clang_getNullCursor(); 3567 } 3568 3569 case Decl::FunctionTemplate: { 3570 const FunctionDecl *Def = 0; 3571 if (cast<FunctionTemplateDecl>(D)->getTemplatedDecl()->getBody(Def)) 3572 return MakeCXCursor(Def->getDescribedFunctionTemplate(), CXXUnit); 3573 return clang_getNullCursor(); 3574 } 3575 3576 case Decl::ClassTemplate: { 3577 if (RecordDecl *Def = cast<ClassTemplateDecl>(D)->getTemplatedDecl() 3578 ->getDefinition()) 3579 return MakeCXCursor(cast<CXXRecordDecl>(Def)->getDescribedClassTemplate(), 3580 CXXUnit); 3581 return clang_getNullCursor(); 3582 } 3583 3584 case Decl::Using: 3585 return MakeCursorOverloadedDeclRef(cast<UsingDecl>(D), 3586 D->getLocation(), CXXUnit); 3587 3588 case Decl::UsingShadow: 3589 return clang_getCursorDefinition( 3590 MakeCXCursor(cast<UsingShadowDecl>(D)->getTargetDecl(), 3591 CXXUnit)); 3592 3593 case Decl::ObjCMethod: { 3594 ObjCMethodDecl *Method = cast<ObjCMethodDecl>(D); 3595 if (Method->isThisDeclarationADefinition()) 3596 return C; 3597 3598 // Dig out the method definition in the associated 3599 // @implementation, if we have it. 3600 // FIXME: The ASTs should make finding the definition easier. 3601 if (ObjCInterfaceDecl *Class 3602 = dyn_cast<ObjCInterfaceDecl>(Method->getDeclContext())) 3603 if (ObjCImplementationDecl *ClassImpl = Class->getImplementation()) 3604 if (ObjCMethodDecl *Def = ClassImpl->getMethod(Method->getSelector(), 3605 Method->isInstanceMethod())) 3606 if (Def->isThisDeclarationADefinition()) 3607 return MakeCXCursor(Def, CXXUnit); 3608 3609 return clang_getNullCursor(); 3610 } 3611 3612 case Decl::ObjCCategory: 3613 if (ObjCCategoryImplDecl *Impl 3614 = cast<ObjCCategoryDecl>(D)->getImplementation()) 3615 return MakeCXCursor(Impl, CXXUnit); 3616 return clang_getNullCursor(); 3617 3618 case Decl::ObjCProtocol: 3619 if (!cast<ObjCProtocolDecl>(D)->isForwardDecl()) 3620 return C; 3621 return clang_getNullCursor(); 3622 3623 case Decl::ObjCInterface: 3624 // There are two notions of a "definition" for an Objective-C 3625 // class: the interface and its implementation. When we resolved a 3626 // reference to an Objective-C class, produce the @interface as 3627 // the definition; when we were provided with the interface, 3628 // produce the @implementation as the definition. 3629 if (WasReference) { 3630 if (!cast<ObjCInterfaceDecl>(D)->isForwardDecl()) 3631 return C; 3632 } else if (ObjCImplementationDecl *Impl 3633 = cast<ObjCInterfaceDecl>(D)->getImplementation()) 3634 return MakeCXCursor(Impl, CXXUnit); 3635 return clang_getNullCursor(); 3636 3637 case Decl::ObjCProperty: 3638 // FIXME: We don't really know where to find the 3639 // ObjCPropertyImplDecls that implement this property. 3640 return clang_getNullCursor(); 3641 3642 case Decl::ObjCCompatibleAlias: 3643 if (ObjCInterfaceDecl *Class 3644 = cast<ObjCCompatibleAliasDecl>(D)->getClassInterface()) 3645 if (!Class->isForwardDecl()) 3646 return MakeCXCursor(Class, CXXUnit); 3647 3648 return clang_getNullCursor(); 3649 3650 case Decl::ObjCForwardProtocol: 3651 return MakeCursorOverloadedDeclRef(cast<ObjCForwardProtocolDecl>(D), 3652 D->getLocation(), CXXUnit); 3653 3654 case Decl::ObjCClass: 3655 return MakeCursorOverloadedDeclRef(cast<ObjCClassDecl>(D), D->getLocation(), 3656 CXXUnit); 3657 3658 case Decl::Friend: 3659 if (NamedDecl *Friend = cast<FriendDecl>(D)->getFriendDecl()) 3660 return clang_getCursorDefinition(MakeCXCursor(Friend, CXXUnit)); 3661 return clang_getNullCursor(); 3662 3663 case Decl::FriendTemplate: 3664 if (NamedDecl *Friend = cast<FriendTemplateDecl>(D)->getFriendDecl()) 3665 return clang_getCursorDefinition(MakeCXCursor(Friend, CXXUnit)); 3666 return clang_getNullCursor(); 3667 } 3668 3669 return clang_getNullCursor(); 3670} 3671 3672unsigned clang_isCursorDefinition(CXCursor C) { 3673 if (!clang_isDeclaration(C.kind)) 3674 return 0; 3675 3676 return clang_getCursorDefinition(C) == C; 3677} 3678 3679unsigned clang_getNumOverloadedDecls(CXCursor C) { 3680 if (C.kind != CXCursor_OverloadedDeclRef) 3681 return 0; 3682 3683 OverloadedDeclRefStorage Storage = getCursorOverloadedDeclRef(C).first; 3684 if (OverloadExpr *E = Storage.dyn_cast<OverloadExpr *>()) 3685 return E->getNumDecls(); 3686 3687 if (OverloadedTemplateStorage *S 3688 = Storage.dyn_cast<OverloadedTemplateStorage*>()) 3689 return S->size(); 3690 3691 Decl *D = Storage.get<Decl*>(); 3692 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) 3693 return Using->shadow_size(); 3694 if (ObjCClassDecl *Classes = dyn_cast<ObjCClassDecl>(D)) 3695 return Classes->size(); 3696 if (ObjCForwardProtocolDecl *Protocols =dyn_cast<ObjCForwardProtocolDecl>(D)) 3697 return Protocols->protocol_size(); 3698 3699 return 0; 3700} 3701 3702CXCursor clang_getOverloadedDecl(CXCursor cursor, unsigned index) { 3703 if (cursor.kind != CXCursor_OverloadedDeclRef) 3704 return clang_getNullCursor(); 3705 3706 if (index >= clang_getNumOverloadedDecls(cursor)) 3707 return clang_getNullCursor(); 3708 3709 ASTUnit *Unit = getCursorASTUnit(cursor); 3710 OverloadedDeclRefStorage Storage = getCursorOverloadedDeclRef(cursor).first; 3711 if (OverloadExpr *E = Storage.dyn_cast<OverloadExpr *>()) 3712 return MakeCXCursor(E->decls_begin()[index], Unit); 3713 3714 if (OverloadedTemplateStorage *S 3715 = Storage.dyn_cast<OverloadedTemplateStorage*>()) 3716 return MakeCXCursor(S->begin()[index], Unit); 3717 3718 Decl *D = Storage.get<Decl*>(); 3719 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) { 3720 // FIXME: This is, unfortunately, linear time. 3721 UsingDecl::shadow_iterator Pos = Using->shadow_begin(); 3722 std::advance(Pos, index); 3723 return MakeCXCursor(cast<UsingShadowDecl>(*Pos)->getTargetDecl(), Unit); 3724 } 3725 3726 if (ObjCClassDecl *Classes = dyn_cast<ObjCClassDecl>(D)) 3727 return MakeCXCursor(Classes->begin()[index].getInterface(), Unit); 3728 3729 if (ObjCForwardProtocolDecl *Protocols = dyn_cast<ObjCForwardProtocolDecl>(D)) 3730 return MakeCXCursor(Protocols->protocol_begin()[index], Unit); 3731 3732 return clang_getNullCursor(); 3733} 3734 3735void clang_getDefinitionSpellingAndExtent(CXCursor C, 3736 const char **startBuf, 3737 const char **endBuf, 3738 unsigned *startLine, 3739 unsigned *startColumn, 3740 unsigned *endLine, 3741 unsigned *endColumn) { 3742 assert(getCursorDecl(C) && "CXCursor has null decl"); 3743 NamedDecl *ND = static_cast<NamedDecl *>(getCursorDecl(C)); 3744 FunctionDecl *FD = dyn_cast<FunctionDecl>(ND); 3745 CompoundStmt *Body = dyn_cast<CompoundStmt>(FD->getBody()); 3746 3747 SourceManager &SM = FD->getASTContext().getSourceManager(); 3748 *startBuf = SM.getCharacterData(Body->getLBracLoc()); 3749 *endBuf = SM.getCharacterData(Body->getRBracLoc()); 3750 *startLine = SM.getSpellingLineNumber(Body->getLBracLoc()); 3751 *startColumn = SM.getSpellingColumnNumber(Body->getLBracLoc()); 3752 *endLine = SM.getSpellingLineNumber(Body->getRBracLoc()); 3753 *endColumn = SM.getSpellingColumnNumber(Body->getRBracLoc()); 3754} 3755 3756void clang_enableStackTraces(void) { 3757 llvm::sys::PrintStackTraceOnErrorSignal(); 3758} 3759 3760void clang_executeOnThread(void (*fn)(void*), void *user_data, 3761 unsigned stack_size) { 3762 llvm::llvm_execute_on_thread(fn, user_data, stack_size); 3763} 3764 3765} // end: extern "C" 3766 3767//===----------------------------------------------------------------------===// 3768// Token-based Operations. 3769//===----------------------------------------------------------------------===// 3770 3771/* CXToken layout: 3772 * int_data[0]: a CXTokenKind 3773 * int_data[1]: starting token location 3774 * int_data[2]: token length 3775 * int_data[3]: reserved 3776 * ptr_data: for identifiers and keywords, an IdentifierInfo*. 3777 * otherwise unused. 3778 */ 3779extern "C" { 3780 3781CXTokenKind clang_getTokenKind(CXToken CXTok) { 3782 return static_cast<CXTokenKind>(CXTok.int_data[0]); 3783} 3784 3785CXString clang_getTokenSpelling(CXTranslationUnit TU, CXToken CXTok) { 3786 switch (clang_getTokenKind(CXTok)) { 3787 case CXToken_Identifier: 3788 case CXToken_Keyword: 3789 // We know we have an IdentifierInfo*, so use that. 3790 return createCXString(static_cast<IdentifierInfo *>(CXTok.ptr_data) 3791 ->getNameStart()); 3792 3793 case CXToken_Literal: { 3794 // We have stashed the starting pointer in the ptr_data field. Use it. 3795 const char *Text = static_cast<const char *>(CXTok.ptr_data); 3796 return createCXString(llvm::StringRef(Text, CXTok.int_data[2])); 3797 } 3798 3799 case CXToken_Punctuation: 3800 case CXToken_Comment: 3801 break; 3802 } 3803 3804 // We have to find the starting buffer pointer the hard way, by 3805 // deconstructing the source location. 3806 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3807 if (!CXXUnit) 3808 return createCXString(""); 3809 3810 SourceLocation Loc = SourceLocation::getFromRawEncoding(CXTok.int_data[1]); 3811 std::pair<FileID, unsigned> LocInfo 3812 = CXXUnit->getSourceManager().getDecomposedLoc(Loc); 3813 bool Invalid = false; 3814 llvm::StringRef Buffer 3815 = CXXUnit->getSourceManager().getBufferData(LocInfo.first, &Invalid); 3816 if (Invalid) 3817 return createCXString(""); 3818 3819 return createCXString(Buffer.substr(LocInfo.second, CXTok.int_data[2])); 3820} 3821 3822CXSourceLocation clang_getTokenLocation(CXTranslationUnit TU, CXToken CXTok) { 3823 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3824 if (!CXXUnit) 3825 return clang_getNullLocation(); 3826 3827 return cxloc::translateSourceLocation(CXXUnit->getASTContext(), 3828 SourceLocation::getFromRawEncoding(CXTok.int_data[1])); 3829} 3830 3831CXSourceRange clang_getTokenExtent(CXTranslationUnit TU, CXToken CXTok) { 3832 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3833 if (!CXXUnit) 3834 return clang_getNullRange(); 3835 3836 return cxloc::translateSourceRange(CXXUnit->getASTContext(), 3837 SourceLocation::getFromRawEncoding(CXTok.int_data[1])); 3838} 3839 3840void clang_tokenize(CXTranslationUnit TU, CXSourceRange Range, 3841 CXToken **Tokens, unsigned *NumTokens) { 3842 if (Tokens) 3843 *Tokens = 0; 3844 if (NumTokens) 3845 *NumTokens = 0; 3846 3847 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3848 if (!CXXUnit || !Tokens || !NumTokens) 3849 return; 3850 3851 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 3852 3853 SourceRange R = cxloc::translateCXSourceRange(Range); 3854 if (R.isInvalid()) 3855 return; 3856 3857 SourceManager &SourceMgr = CXXUnit->getSourceManager(); 3858 std::pair<FileID, unsigned> BeginLocInfo 3859 = SourceMgr.getDecomposedLoc(R.getBegin()); 3860 std::pair<FileID, unsigned> EndLocInfo 3861 = SourceMgr.getDecomposedLoc(R.getEnd()); 3862 3863 // Cannot tokenize across files. 3864 if (BeginLocInfo.first != EndLocInfo.first) 3865 return; 3866 3867 // Create a lexer 3868 bool Invalid = false; 3869 llvm::StringRef Buffer 3870 = SourceMgr.getBufferData(BeginLocInfo.first, &Invalid); 3871 if (Invalid) 3872 return; 3873 3874 Lexer Lex(SourceMgr.getLocForStartOfFile(BeginLocInfo.first), 3875 CXXUnit->getASTContext().getLangOptions(), 3876 Buffer.begin(), Buffer.data() + BeginLocInfo.second, Buffer.end()); 3877 Lex.SetCommentRetentionState(true); 3878 3879 // Lex tokens until we hit the end of the range. 3880 const char *EffectiveBufferEnd = Buffer.data() + EndLocInfo.second; 3881 llvm::SmallVector<CXToken, 32> CXTokens; 3882 Token Tok; 3883 bool previousWasAt = false; 3884 do { 3885 // Lex the next token 3886 Lex.LexFromRawLexer(Tok); 3887 if (Tok.is(tok::eof)) 3888 break; 3889 3890 // Initialize the CXToken. 3891 CXToken CXTok; 3892 3893 // - Common fields 3894 CXTok.int_data[1] = Tok.getLocation().getRawEncoding(); 3895 CXTok.int_data[2] = Tok.getLength(); 3896 CXTok.int_data[3] = 0; 3897 3898 // - Kind-specific fields 3899 if (Tok.isLiteral()) { 3900 CXTok.int_data[0] = CXToken_Literal; 3901 CXTok.ptr_data = (void *)Tok.getLiteralData(); 3902 } else if (Tok.is(tok::identifier)) { 3903 // Lookup the identifier to determine whether we have a keyword. 3904 std::pair<FileID, unsigned> LocInfo 3905 = SourceMgr.getDecomposedLoc(Tok.getLocation()); 3906 bool Invalid = false; 3907 llvm::StringRef Buf 3908 = CXXUnit->getSourceManager().getBufferData(LocInfo.first, &Invalid); 3909 if (Invalid) 3910 return; 3911 3912 const char *StartPos = Buf.data() + LocInfo.second; 3913 IdentifierInfo *II 3914 = CXXUnit->getPreprocessor().LookUpIdentifierInfo(Tok, StartPos); 3915 3916 if ((II->getObjCKeywordID() != tok::objc_not_keyword) && previousWasAt) { 3917 CXTok.int_data[0] = CXToken_Keyword; 3918 } 3919 else { 3920 CXTok.int_data[0] = II->getTokenID() == tok::identifier? 3921 CXToken_Identifier 3922 : CXToken_Keyword; 3923 } 3924 CXTok.ptr_data = II; 3925 } else if (Tok.is(tok::comment)) { 3926 CXTok.int_data[0] = CXToken_Comment; 3927 CXTok.ptr_data = 0; 3928 } else { 3929 CXTok.int_data[0] = CXToken_Punctuation; 3930 CXTok.ptr_data = 0; 3931 } 3932 CXTokens.push_back(CXTok); 3933 previousWasAt = Tok.is(tok::at); 3934 } while (Lex.getBufferLocation() <= EffectiveBufferEnd); 3935 3936 if (CXTokens.empty()) 3937 return; 3938 3939 *Tokens = (CXToken *)malloc(sizeof(CXToken) * CXTokens.size()); 3940 memmove(*Tokens, CXTokens.data(), sizeof(CXToken) * CXTokens.size()); 3941 *NumTokens = CXTokens.size(); 3942} 3943 3944void clang_disposeTokens(CXTranslationUnit TU, 3945 CXToken *Tokens, unsigned NumTokens) { 3946 free(Tokens); 3947} 3948 3949} // end: extern "C" 3950 3951//===----------------------------------------------------------------------===// 3952// Token annotation APIs. 3953//===----------------------------------------------------------------------===// 3954 3955typedef llvm::DenseMap<unsigned, CXCursor> AnnotateTokensData; 3956static enum CXChildVisitResult AnnotateTokensVisitor(CXCursor cursor, 3957 CXCursor parent, 3958 CXClientData client_data); 3959namespace { 3960class AnnotateTokensWorker { 3961 AnnotateTokensData &Annotated; 3962 CXToken *Tokens; 3963 CXCursor *Cursors; 3964 unsigned NumTokens; 3965 unsigned TokIdx; 3966 unsigned PreprocessingTokIdx; 3967 CursorVisitor AnnotateVis; 3968 SourceManager &SrcMgr; 3969 3970 bool MoreTokens() const { return TokIdx < NumTokens; } 3971 unsigned NextToken() const { return TokIdx; } 3972 void AdvanceToken() { ++TokIdx; } 3973 SourceLocation GetTokenLoc(unsigned tokI) { 3974 return SourceLocation::getFromRawEncoding(Tokens[tokI].int_data[1]); 3975 } 3976 3977public: 3978 AnnotateTokensWorker(AnnotateTokensData &annotated, 3979 CXToken *tokens, CXCursor *cursors, unsigned numTokens, 3980 ASTUnit *CXXUnit, SourceRange RegionOfInterest) 3981 : Annotated(annotated), Tokens(tokens), Cursors(cursors), 3982 NumTokens(numTokens), TokIdx(0), PreprocessingTokIdx(0), 3983 AnnotateVis(CXXUnit, AnnotateTokensVisitor, this, 3984 Decl::MaxPCHLevel, RegionOfInterest), 3985 SrcMgr(CXXUnit->getSourceManager()) {} 3986 3987 void VisitChildren(CXCursor C) { AnnotateVis.VisitChildren(C); } 3988 enum CXChildVisitResult Visit(CXCursor cursor, CXCursor parent); 3989 void AnnotateTokens(CXCursor parent); 3990 void AnnotateTokens() { 3991 AnnotateTokens(clang_getTranslationUnitCursor(AnnotateVis.getASTUnit())); 3992 } 3993}; 3994} 3995 3996void AnnotateTokensWorker::AnnotateTokens(CXCursor parent) { 3997 // Walk the AST within the region of interest, annotating tokens 3998 // along the way. 3999 VisitChildren(parent); 4000 4001 for (unsigned I = 0 ; I < TokIdx ; ++I) { 4002 AnnotateTokensData::iterator Pos = Annotated.find(Tokens[I].int_data[1]); 4003 if (Pos != Annotated.end() && 4004 (clang_isInvalid(Cursors[I].kind) || 4005 Pos->second.kind != CXCursor_PreprocessingDirective)) 4006 Cursors[I] = Pos->second; 4007 } 4008 4009 // Finish up annotating any tokens left. 4010 if (!MoreTokens()) 4011 return; 4012 4013 const CXCursor &C = clang_getNullCursor(); 4014 for (unsigned I = TokIdx ; I < NumTokens ; ++I) { 4015 AnnotateTokensData::iterator Pos = Annotated.find(Tokens[I].int_data[1]); 4016 Cursors[I] = (Pos == Annotated.end()) ? C : Pos->second; 4017 } 4018} 4019 4020enum CXChildVisitResult 4021AnnotateTokensWorker::Visit(CXCursor cursor, CXCursor parent) { 4022 CXSourceLocation Loc = clang_getCursorLocation(cursor); 4023 SourceRange cursorRange = getRawCursorExtent(cursor); 4024 if (cursorRange.isInvalid()) 4025 return CXChildVisit_Recurse; 4026 4027 if (clang_isPreprocessing(cursor.kind)) { 4028 // For macro instantiations, just note where the beginning of the macro 4029 // instantiation occurs. 4030 if (cursor.kind == CXCursor_MacroInstantiation) { 4031 Annotated[Loc.int_data] = cursor; 4032 return CXChildVisit_Recurse; 4033 } 4034 4035 // Items in the preprocessing record are kept separate from items in 4036 // declarations, so we keep a separate token index. 4037 unsigned SavedTokIdx = TokIdx; 4038 TokIdx = PreprocessingTokIdx; 4039 4040 // Skip tokens up until we catch up to the beginning of the preprocessing 4041 // entry. 4042 while (MoreTokens()) { 4043 const unsigned I = NextToken(); 4044 SourceLocation TokLoc = GetTokenLoc(I); 4045 switch (LocationCompare(SrcMgr, TokLoc, cursorRange)) { 4046 case RangeBefore: 4047 AdvanceToken(); 4048 continue; 4049 case RangeAfter: 4050 case RangeOverlap: 4051 break; 4052 } 4053 break; 4054 } 4055 4056 // Look at all of the tokens within this range. 4057 while (MoreTokens()) { 4058 const unsigned I = NextToken(); 4059 SourceLocation TokLoc = GetTokenLoc(I); 4060 switch (LocationCompare(SrcMgr, TokLoc, cursorRange)) { 4061 case RangeBefore: 4062 assert(0 && "Infeasible"); 4063 case RangeAfter: 4064 break; 4065 case RangeOverlap: 4066 Cursors[I] = cursor; 4067 AdvanceToken(); 4068 continue; 4069 } 4070 break; 4071 } 4072 4073 // Save the preprocessing token index; restore the non-preprocessing 4074 // token index. 4075 PreprocessingTokIdx = TokIdx; 4076 TokIdx = SavedTokIdx; 4077 return CXChildVisit_Recurse; 4078 } 4079 4080 if (cursorRange.isInvalid()) 4081 return CXChildVisit_Continue; 4082 4083 SourceLocation L = SourceLocation::getFromRawEncoding(Loc.int_data); 4084 4085 // Adjust the annotated range based specific declarations. 4086 const enum CXCursorKind cursorK = clang_getCursorKind(cursor); 4087 if (cursorK >= CXCursor_FirstDecl && cursorK <= CXCursor_LastDecl) { 4088 Decl *D = cxcursor::getCursorDecl(cursor); 4089 // Don't visit synthesized ObjC methods, since they have no syntatic 4090 // representation in the source. 4091 if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 4092 if (MD->isSynthesized()) 4093 return CXChildVisit_Continue; 4094 } 4095 if (const DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) { 4096 if (TypeSourceInfo *TI = DD->getTypeSourceInfo()) { 4097 TypeLoc TL = TI->getTypeLoc(); 4098 SourceLocation TLoc = TL.getSourceRange().getBegin(); 4099 if (TLoc.isValid() && L.isValid() && 4100 SrcMgr.isBeforeInTranslationUnit(TLoc, L)) 4101 cursorRange.setBegin(TLoc); 4102 } 4103 } 4104 } 4105 4106 // If the location of the cursor occurs within a macro instantiation, record 4107 // the spelling location of the cursor in our annotation map. We can then 4108 // paper over the token labelings during a post-processing step to try and 4109 // get cursor mappings for tokens that are the *arguments* of a macro 4110 // instantiation. 4111 if (L.isMacroID()) { 4112 unsigned rawEncoding = SrcMgr.getSpellingLoc(L).getRawEncoding(); 4113 // Only invalidate the old annotation if it isn't part of a preprocessing 4114 // directive. Here we assume that the default construction of CXCursor 4115 // results in CXCursor.kind being an initialized value (i.e., 0). If 4116 // this isn't the case, we can fix by doing lookup + insertion. 4117 4118 CXCursor &oldC = Annotated[rawEncoding]; 4119 if (!clang_isPreprocessing(oldC.kind)) 4120 oldC = cursor; 4121 } 4122 4123 const enum CXCursorKind K = clang_getCursorKind(parent); 4124 const CXCursor updateC = 4125 (clang_isInvalid(K) || K == CXCursor_TranslationUnit) 4126 ? clang_getNullCursor() : parent; 4127 4128 while (MoreTokens()) { 4129 const unsigned I = NextToken(); 4130 SourceLocation TokLoc = GetTokenLoc(I); 4131 switch (LocationCompare(SrcMgr, TokLoc, cursorRange)) { 4132 case RangeBefore: 4133 Cursors[I] = updateC; 4134 AdvanceToken(); 4135 continue; 4136 case RangeAfter: 4137 case RangeOverlap: 4138 break; 4139 } 4140 break; 4141 } 4142 4143 // Visit children to get their cursor information. 4144 const unsigned BeforeChildren = NextToken(); 4145 VisitChildren(cursor); 4146 const unsigned AfterChildren = NextToken(); 4147 4148 // Adjust 'Last' to the last token within the extent of the cursor. 4149 while (MoreTokens()) { 4150 const unsigned I = NextToken(); 4151 SourceLocation TokLoc = GetTokenLoc(I); 4152 switch (LocationCompare(SrcMgr, TokLoc, cursorRange)) { 4153 case RangeBefore: 4154 assert(0 && "Infeasible"); 4155 case RangeAfter: 4156 break; 4157 case RangeOverlap: 4158 Cursors[I] = updateC; 4159 AdvanceToken(); 4160 continue; 4161 } 4162 break; 4163 } 4164 const unsigned Last = NextToken(); 4165 4166 // Scan the tokens that are at the beginning of the cursor, but are not 4167 // capture by the child cursors. 4168 4169 // For AST elements within macros, rely on a post-annotate pass to 4170 // to correctly annotate the tokens with cursors. Otherwise we can 4171 // get confusing results of having tokens that map to cursors that really 4172 // are expanded by an instantiation. 4173 if (L.isMacroID()) 4174 cursor = clang_getNullCursor(); 4175 4176 for (unsigned I = BeforeChildren; I != AfterChildren; ++I) { 4177 if (!clang_isInvalid(clang_getCursorKind(Cursors[I]))) 4178 break; 4179 4180 Cursors[I] = cursor; 4181 } 4182 // Scan the tokens that are at the end of the cursor, but are not captured 4183 // but the child cursors. 4184 for (unsigned I = AfterChildren; I != Last; ++I) 4185 Cursors[I] = cursor; 4186 4187 TokIdx = Last; 4188 return CXChildVisit_Continue; 4189} 4190 4191static enum CXChildVisitResult AnnotateTokensVisitor(CXCursor cursor, 4192 CXCursor parent, 4193 CXClientData client_data) { 4194 return static_cast<AnnotateTokensWorker*>(client_data)->Visit(cursor, parent); 4195} 4196 4197// This gets run a separate thread to avoid stack blowout. 4198static void runAnnotateTokensWorker(void *UserData) { 4199 ((AnnotateTokensWorker*)UserData)->AnnotateTokens(); 4200} 4201 4202extern "C" { 4203 4204void clang_annotateTokens(CXTranslationUnit TU, 4205 CXToken *Tokens, unsigned NumTokens, 4206 CXCursor *Cursors) { 4207 4208 if (NumTokens == 0 || !Tokens || !Cursors) 4209 return; 4210 4211 // Any token we don't specifically annotate will have a NULL cursor. 4212 CXCursor C = clang_getNullCursor(); 4213 for (unsigned I = 0; I != NumTokens; ++I) 4214 Cursors[I] = C; 4215 4216 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 4217 if (!CXXUnit) 4218 return; 4219 4220 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 4221 4222 // Determine the region of interest, which contains all of the tokens. 4223 SourceRange RegionOfInterest; 4224 RegionOfInterest.setBegin(cxloc::translateSourceLocation( 4225 clang_getTokenLocation(TU, Tokens[0]))); 4226 RegionOfInterest.setEnd(cxloc::translateSourceLocation( 4227 clang_getTokenLocation(TU, 4228 Tokens[NumTokens - 1]))); 4229 4230 // A mapping from the source locations found when re-lexing or traversing the 4231 // region of interest to the corresponding cursors. 4232 AnnotateTokensData Annotated; 4233 4234 // Relex the tokens within the source range to look for preprocessing 4235 // directives. 4236 SourceManager &SourceMgr = CXXUnit->getSourceManager(); 4237 std::pair<FileID, unsigned> BeginLocInfo 4238 = SourceMgr.getDecomposedLoc(RegionOfInterest.getBegin()); 4239 std::pair<FileID, unsigned> EndLocInfo 4240 = SourceMgr.getDecomposedLoc(RegionOfInterest.getEnd()); 4241 4242 llvm::StringRef Buffer; 4243 bool Invalid = false; 4244 if (BeginLocInfo.first == EndLocInfo.first && 4245 ((Buffer = SourceMgr.getBufferData(BeginLocInfo.first, &Invalid)),true) && 4246 !Invalid) { 4247 Lexer Lex(SourceMgr.getLocForStartOfFile(BeginLocInfo.first), 4248 CXXUnit->getASTContext().getLangOptions(), 4249 Buffer.begin(), Buffer.data() + BeginLocInfo.second, 4250 Buffer.end()); 4251 Lex.SetCommentRetentionState(true); 4252 4253 // Lex tokens in raw mode until we hit the end of the range, to avoid 4254 // entering #includes or expanding macros. 4255 while (true) { 4256 Token Tok; 4257 Lex.LexFromRawLexer(Tok); 4258 4259 reprocess: 4260 if (Tok.is(tok::hash) && Tok.isAtStartOfLine()) { 4261 // We have found a preprocessing directive. Gobble it up so that we 4262 // don't see it while preprocessing these tokens later, but keep track 4263 // of all of the token locations inside this preprocessing directive so 4264 // that we can annotate them appropriately. 4265 // 4266 // FIXME: Some simple tests here could identify macro definitions and 4267 // #undefs, to provide specific cursor kinds for those. 4268 std::vector<SourceLocation> Locations; 4269 do { 4270 Locations.push_back(Tok.getLocation()); 4271 Lex.LexFromRawLexer(Tok); 4272 } while (!Tok.isAtStartOfLine() && !Tok.is(tok::eof)); 4273 4274 using namespace cxcursor; 4275 CXCursor Cursor 4276 = MakePreprocessingDirectiveCursor(SourceRange(Locations.front(), 4277 Locations.back()), 4278 CXXUnit); 4279 for (unsigned I = 0, N = Locations.size(); I != N; ++I) { 4280 Annotated[Locations[I].getRawEncoding()] = Cursor; 4281 } 4282 4283 if (Tok.isAtStartOfLine()) 4284 goto reprocess; 4285 4286 continue; 4287 } 4288 4289 if (Tok.is(tok::eof)) 4290 break; 4291 } 4292 } 4293 4294 // Annotate all of the source locations in the region of interest that map to 4295 // a specific cursor. 4296 AnnotateTokensWorker W(Annotated, Tokens, Cursors, NumTokens, 4297 CXXUnit, RegionOfInterest); 4298 4299 // Run the worker within a CrashRecoveryContext. 4300 llvm::CrashRecoveryContext CRC; 4301 if (!RunSafely(CRC, runAnnotateTokensWorker, &W)) { 4302 fprintf(stderr, "libclang: crash detected while annotating tokens\n"); 4303 } 4304} 4305} // end: extern "C" 4306 4307//===----------------------------------------------------------------------===// 4308// Operations for querying linkage of a cursor. 4309//===----------------------------------------------------------------------===// 4310 4311extern "C" { 4312CXLinkageKind clang_getCursorLinkage(CXCursor cursor) { 4313 if (!clang_isDeclaration(cursor.kind)) 4314 return CXLinkage_Invalid; 4315 4316 Decl *D = cxcursor::getCursorDecl(cursor); 4317 if (NamedDecl *ND = dyn_cast_or_null<NamedDecl>(D)) 4318 switch (ND->getLinkage()) { 4319 case NoLinkage: return CXLinkage_NoLinkage; 4320 case InternalLinkage: return CXLinkage_Internal; 4321 case UniqueExternalLinkage: return CXLinkage_UniqueExternal; 4322 case ExternalLinkage: return CXLinkage_External; 4323 }; 4324 4325 return CXLinkage_Invalid; 4326} 4327} // end: extern "C" 4328 4329//===----------------------------------------------------------------------===// 4330// Operations for querying language of a cursor. 4331//===----------------------------------------------------------------------===// 4332 4333static CXLanguageKind getDeclLanguage(const Decl *D) { 4334 switch (D->getKind()) { 4335 default: 4336 break; 4337 case Decl::ImplicitParam: 4338 case Decl::ObjCAtDefsField: 4339 case Decl::ObjCCategory: 4340 case Decl::ObjCCategoryImpl: 4341 case Decl::ObjCClass: 4342 case Decl::ObjCCompatibleAlias: 4343 case Decl::ObjCForwardProtocol: 4344 case Decl::ObjCImplementation: 4345 case Decl::ObjCInterface: 4346 case Decl::ObjCIvar: 4347 case Decl::ObjCMethod: 4348 case Decl::ObjCProperty: 4349 case Decl::ObjCPropertyImpl: 4350 case Decl::ObjCProtocol: 4351 return CXLanguage_ObjC; 4352 case Decl::CXXConstructor: 4353 case Decl::CXXConversion: 4354 case Decl::CXXDestructor: 4355 case Decl::CXXMethod: 4356 case Decl::CXXRecord: 4357 case Decl::ClassTemplate: 4358 case Decl::ClassTemplatePartialSpecialization: 4359 case Decl::ClassTemplateSpecialization: 4360 case Decl::Friend: 4361 case Decl::FriendTemplate: 4362 case Decl::FunctionTemplate: 4363 case Decl::LinkageSpec: 4364 case Decl::Namespace: 4365 case Decl::NamespaceAlias: 4366 case Decl::NonTypeTemplateParm: 4367 case Decl::StaticAssert: 4368 case Decl::TemplateTemplateParm: 4369 case Decl::TemplateTypeParm: 4370 case Decl::UnresolvedUsingTypename: 4371 case Decl::UnresolvedUsingValue: 4372 case Decl::Using: 4373 case Decl::UsingDirective: 4374 case Decl::UsingShadow: 4375 return CXLanguage_CPlusPlus; 4376 } 4377 4378 return CXLanguage_C; 4379} 4380 4381extern "C" { 4382 4383enum CXAvailabilityKind clang_getCursorAvailability(CXCursor cursor) { 4384 if (clang_isDeclaration(cursor.kind)) 4385 if (Decl *D = cxcursor::getCursorDecl(cursor)) { 4386 if (D->hasAttr<UnavailableAttr>() || 4387 (isa<FunctionDecl>(D) && cast<FunctionDecl>(D)->isDeleted())) 4388 return CXAvailability_Available; 4389 4390 if (D->hasAttr<DeprecatedAttr>()) 4391 return CXAvailability_Deprecated; 4392 } 4393 4394 return CXAvailability_Available; 4395} 4396 4397CXLanguageKind clang_getCursorLanguage(CXCursor cursor) { 4398 if (clang_isDeclaration(cursor.kind)) 4399 return getDeclLanguage(cxcursor::getCursorDecl(cursor)); 4400 4401 return CXLanguage_Invalid; 4402} 4403 4404CXCursor clang_getCursorSemanticParent(CXCursor cursor) { 4405 if (clang_isDeclaration(cursor.kind)) { 4406 if (Decl *D = getCursorDecl(cursor)) { 4407 DeclContext *DC = D->getDeclContext(); 4408 return MakeCXCursor(cast<Decl>(DC), getCursorASTUnit(cursor)); 4409 } 4410 } 4411 4412 if (clang_isStatement(cursor.kind) || clang_isExpression(cursor.kind)) { 4413 if (Decl *D = getCursorDecl(cursor)) 4414 return MakeCXCursor(D, getCursorASTUnit(cursor)); 4415 } 4416 4417 return clang_getNullCursor(); 4418} 4419 4420CXCursor clang_getCursorLexicalParent(CXCursor cursor) { 4421 if (clang_isDeclaration(cursor.kind)) { 4422 if (Decl *D = getCursorDecl(cursor)) { 4423 DeclContext *DC = D->getLexicalDeclContext(); 4424 return MakeCXCursor(cast<Decl>(DC), getCursorASTUnit(cursor)); 4425 } 4426 } 4427 4428 // FIXME: Note that we can't easily compute the lexical context of a 4429 // statement or expression, so we return nothing. 4430 return clang_getNullCursor(); 4431} 4432 4433static void CollectOverriddenMethods(DeclContext *Ctx, 4434 ObjCMethodDecl *Method, 4435 llvm::SmallVectorImpl<ObjCMethodDecl *> &Methods) { 4436 if (!Ctx) 4437 return; 4438 4439 // If we have a class or category implementation, jump straight to the 4440 // interface. 4441 if (ObjCImplDecl *Impl = dyn_cast<ObjCImplDecl>(Ctx)) 4442 return CollectOverriddenMethods(Impl->getClassInterface(), Method, Methods); 4443 4444 ObjCContainerDecl *Container = dyn_cast<ObjCContainerDecl>(Ctx); 4445 if (!Container) 4446 return; 4447 4448 // Check whether we have a matching method at this level. 4449 if (ObjCMethodDecl *Overridden = Container->getMethod(Method->getSelector(), 4450 Method->isInstanceMethod())) 4451 if (Method != Overridden) { 4452 // We found an override at this level; there is no need to look 4453 // into other protocols or categories. 4454 Methods.push_back(Overridden); 4455 return; 4456 } 4457 4458 if (ObjCProtocolDecl *Protocol = dyn_cast<ObjCProtocolDecl>(Container)) { 4459 for (ObjCProtocolDecl::protocol_iterator P = Protocol->protocol_begin(), 4460 PEnd = Protocol->protocol_end(); 4461 P != PEnd; ++P) 4462 CollectOverriddenMethods(*P, Method, Methods); 4463 } 4464 4465 if (ObjCCategoryDecl *Category = dyn_cast<ObjCCategoryDecl>(Container)) { 4466 for (ObjCCategoryDecl::protocol_iterator P = Category->protocol_begin(), 4467 PEnd = Category->protocol_end(); 4468 P != PEnd; ++P) 4469 CollectOverriddenMethods(*P, Method, Methods); 4470 } 4471 4472 if (ObjCInterfaceDecl *Interface = dyn_cast<ObjCInterfaceDecl>(Container)) { 4473 for (ObjCInterfaceDecl::protocol_iterator P = Interface->protocol_begin(), 4474 PEnd = Interface->protocol_end(); 4475 P != PEnd; ++P) 4476 CollectOverriddenMethods(*P, Method, Methods); 4477 4478 for (ObjCCategoryDecl *Category = Interface->getCategoryList(); 4479 Category; Category = Category->getNextClassCategory()) 4480 CollectOverriddenMethods(Category, Method, Methods); 4481 4482 // We only look into the superclass if we haven't found anything yet. 4483 if (Methods.empty()) 4484 if (ObjCInterfaceDecl *Super = Interface->getSuperClass()) 4485 return CollectOverriddenMethods(Super, Method, Methods); 4486 } 4487} 4488 4489void clang_getOverriddenCursors(CXCursor cursor, 4490 CXCursor **overridden, 4491 unsigned *num_overridden) { 4492 if (overridden) 4493 *overridden = 0; 4494 if (num_overridden) 4495 *num_overridden = 0; 4496 if (!overridden || !num_overridden) 4497 return; 4498 4499 if (!clang_isDeclaration(cursor.kind)) 4500 return; 4501 4502 Decl *D = getCursorDecl(cursor); 4503 if (!D) 4504 return; 4505 4506 // Handle C++ member functions. 4507 ASTUnit *CXXUnit = getCursorASTUnit(cursor); 4508 if (CXXMethodDecl *CXXMethod = dyn_cast<CXXMethodDecl>(D)) { 4509 *num_overridden = CXXMethod->size_overridden_methods(); 4510 if (!*num_overridden) 4511 return; 4512 4513 *overridden = new CXCursor [*num_overridden]; 4514 unsigned I = 0; 4515 for (CXXMethodDecl::method_iterator 4516 M = CXXMethod->begin_overridden_methods(), 4517 MEnd = CXXMethod->end_overridden_methods(); 4518 M != MEnd; (void)++M, ++I) 4519 (*overridden)[I] = MakeCXCursor(const_cast<CXXMethodDecl*>(*M), CXXUnit); 4520 return; 4521 } 4522 4523 ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(D); 4524 if (!Method) 4525 return; 4526 4527 // Handle Objective-C methods. 4528 llvm::SmallVector<ObjCMethodDecl *, 4> Methods; 4529 CollectOverriddenMethods(Method->getDeclContext(), Method, Methods); 4530 4531 if (Methods.empty()) 4532 return; 4533 4534 *num_overridden = Methods.size(); 4535 *overridden = new CXCursor [Methods.size()]; 4536 for (unsigned I = 0, N = Methods.size(); I != N; ++I) 4537 (*overridden)[I] = MakeCXCursor(Methods[I], CXXUnit); 4538} 4539 4540void clang_disposeOverriddenCursors(CXCursor *overridden) { 4541 delete [] overridden; 4542} 4543 4544CXFile clang_getIncludedFile(CXCursor cursor) { 4545 if (cursor.kind != CXCursor_InclusionDirective) 4546 return 0; 4547 4548 InclusionDirective *ID = getCursorInclusionDirective(cursor); 4549 return (void *)ID->getFile(); 4550} 4551 4552} // end: extern "C" 4553 4554 4555//===----------------------------------------------------------------------===// 4556// C++ AST instrospection. 4557//===----------------------------------------------------------------------===// 4558 4559extern "C" { 4560unsigned clang_CXXMethod_isStatic(CXCursor C) { 4561 if (!clang_isDeclaration(C.kind)) 4562 return 0; 4563 4564 CXXMethodDecl *Method = 0; 4565 Decl *D = cxcursor::getCursorDecl(C); 4566 if (FunctionTemplateDecl *FunTmpl = dyn_cast_or_null<FunctionTemplateDecl>(D)) 4567 Method = dyn_cast<CXXMethodDecl>(FunTmpl->getTemplatedDecl()); 4568 else 4569 Method = dyn_cast_or_null<CXXMethodDecl>(D); 4570 return (Method && Method->isStatic()) ? 1 : 0; 4571} 4572 4573} // end: extern "C" 4574 4575//===----------------------------------------------------------------------===// 4576// Attribute introspection. 4577//===----------------------------------------------------------------------===// 4578 4579extern "C" { 4580CXType clang_getIBOutletCollectionType(CXCursor C) { 4581 if (C.kind != CXCursor_IBOutletCollectionAttr) 4582 return cxtype::MakeCXType(QualType(), cxcursor::getCursorASTUnit(C)); 4583 4584 IBOutletCollectionAttr *A = 4585 cast<IBOutletCollectionAttr>(cxcursor::getCursorAttr(C)); 4586 4587 return cxtype::MakeCXType(A->getInterface(), cxcursor::getCursorASTUnit(C)); 4588} 4589} // end: extern "C" 4590 4591//===----------------------------------------------------------------------===// 4592// CXString Operations. 4593//===----------------------------------------------------------------------===// 4594 4595extern "C" { 4596const char *clang_getCString(CXString string) { 4597 return string.Spelling; 4598} 4599 4600void clang_disposeString(CXString string) { 4601 if (string.MustFreeString && string.Spelling) 4602 free((void*)string.Spelling); 4603} 4604 4605} // end: extern "C" 4606 4607namespace clang { namespace cxstring { 4608CXString createCXString(const char *String, bool DupString){ 4609 CXString Str; 4610 if (DupString) { 4611 Str.Spelling = strdup(String); 4612 Str.MustFreeString = 1; 4613 } else { 4614 Str.Spelling = String; 4615 Str.MustFreeString = 0; 4616 } 4617 return Str; 4618} 4619 4620CXString createCXString(llvm::StringRef String, bool DupString) { 4621 CXString Result; 4622 if (DupString || (!String.empty() && String.data()[String.size()] != 0)) { 4623 char *Spelling = (char *)malloc(String.size() + 1); 4624 memmove(Spelling, String.data(), String.size()); 4625 Spelling[String.size()] = 0; 4626 Result.Spelling = Spelling; 4627 Result.MustFreeString = 1; 4628 } else { 4629 Result.Spelling = String.data(); 4630 Result.MustFreeString = 0; 4631 } 4632 return Result; 4633} 4634}} 4635 4636//===----------------------------------------------------------------------===// 4637// Misc. utility functions. 4638//===----------------------------------------------------------------------===// 4639 4640/// Default to using an 8 MB stack size on "safety" threads. 4641static unsigned SafetyStackThreadSize = 8 << 20; 4642 4643namespace clang { 4644 4645bool RunSafely(llvm::CrashRecoveryContext &CRC, 4646 void (*Fn)(void*), void *UserData) { 4647 if (unsigned Size = GetSafetyThreadStackSize()) 4648 return CRC.RunSafelyOnThread(Fn, UserData, Size); 4649 return CRC.RunSafely(Fn, UserData); 4650} 4651 4652unsigned GetSafetyThreadStackSize() { 4653 return SafetyStackThreadSize; 4654} 4655 4656void SetSafetyThreadStackSize(unsigned Value) { 4657 SafetyStackThreadSize = Value; 4658} 4659 4660} 4661 4662extern "C" { 4663 4664CXString clang_getClangVersion() { 4665 return createCXString(getClangFullVersion()); 4666} 4667 4668} // end: extern "C" 4669