CIndex.cpp revision db1314e3ef76f38de07f1b3c7cdc1100a0678931
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/Support/CrashRecoveryContext.h" 35#include "llvm/Support/MemoryBuffer.h" 36#include "llvm/Support/Timer.h" 37#include "llvm/System/Mutex.h" 38#include "llvm/System/Program.h" 39#include "llvm/System/Signals.h" 40#include "llvm/System/Threading.h" 41 42// Needed to define L_TMPNAM on some systems. 43#include <cstdio> 44 45using namespace clang; 46using namespace clang::cxcursor; 47using namespace clang::cxstring; 48 49//===----------------------------------------------------------------------===// 50// Crash Reporting. 51//===----------------------------------------------------------------------===// 52 53#ifdef USE_CRASHTRACER 54#include "clang/Analysis/Support/SaveAndRestore.h" 55// Integrate with crash reporter. 56static const char *__crashreporter_info__ = 0; 57asm(".desc ___crashreporter_info__, 0x10"); 58#define NUM_CRASH_STRINGS 32 59static unsigned crashtracer_counter = 0; 60static unsigned crashtracer_counter_id[NUM_CRASH_STRINGS] = { 0 }; 61static const char *crashtracer_strings[NUM_CRASH_STRINGS] = { 0 }; 62static const char *agg_crashtracer_strings[NUM_CRASH_STRINGS] = { 0 }; 63 64static unsigned SetCrashTracerInfo(const char *str, 65 llvm::SmallString<1024> &AggStr) { 66 67 unsigned slot = 0; 68 while (crashtracer_strings[slot]) { 69 if (++slot == NUM_CRASH_STRINGS) 70 slot = 0; 71 } 72 crashtracer_strings[slot] = str; 73 crashtracer_counter_id[slot] = ++crashtracer_counter; 74 75 // We need to create an aggregate string because multiple threads 76 // may be in this method at one time. The crash reporter string 77 // will attempt to overapproximate the set of in-flight invocations 78 // of this function. Race conditions can still cause this goal 79 // to not be achieved. 80 { 81 llvm::raw_svector_ostream Out(AggStr); 82 for (unsigned i = 0; i < NUM_CRASH_STRINGS; ++i) 83 if (crashtracer_strings[i]) Out << crashtracer_strings[i] << '\n'; 84 } 85 __crashreporter_info__ = agg_crashtracer_strings[slot] = AggStr.c_str(); 86 return slot; 87} 88 89static void ResetCrashTracerInfo(unsigned slot) { 90 unsigned max_slot = 0; 91 unsigned max_value = 0; 92 93 crashtracer_strings[slot] = agg_crashtracer_strings[slot] = 0; 94 95 for (unsigned i = 0 ; i < NUM_CRASH_STRINGS; ++i) 96 if (agg_crashtracer_strings[i] && 97 crashtracer_counter_id[i] > max_value) { 98 max_slot = i; 99 max_value = crashtracer_counter_id[i]; 100 } 101 102 __crashreporter_info__ = agg_crashtracer_strings[max_slot]; 103} 104 105namespace { 106class ArgsCrashTracerInfo { 107 llvm::SmallString<1024> CrashString; 108 llvm::SmallString<1024> AggregateString; 109 unsigned crashtracerSlot; 110public: 111 ArgsCrashTracerInfo(llvm::SmallVectorImpl<const char*> &Args) 112 : crashtracerSlot(0) 113 { 114 { 115 llvm::raw_svector_ostream Out(CrashString); 116 Out << "ClangCIndex [" << getClangFullVersion() << "]" 117 << "[createTranslationUnitFromSourceFile]: clang"; 118 for (llvm::SmallVectorImpl<const char*>::iterator I=Args.begin(), 119 E=Args.end(); I!=E; ++I) 120 Out << ' ' << *I; 121 } 122 crashtracerSlot = SetCrashTracerInfo(CrashString.c_str(), 123 AggregateString); 124 } 125 126 ~ArgsCrashTracerInfo() { 127 ResetCrashTracerInfo(crashtracerSlot); 128 } 129}; 130} 131#endif 132 133/// \brief The result of comparing two source ranges. 134enum RangeComparisonResult { 135 /// \brief Either the ranges overlap or one of the ranges is invalid. 136 RangeOverlap, 137 138 /// \brief The first range ends before the second range starts. 139 RangeBefore, 140 141 /// \brief The first range starts after the second range ends. 142 RangeAfter 143}; 144 145/// \brief Compare two source ranges to determine their relative position in 146/// the translation unit. 147static RangeComparisonResult RangeCompare(SourceManager &SM, 148 SourceRange R1, 149 SourceRange R2) { 150 assert(R1.isValid() && "First range is invalid?"); 151 assert(R2.isValid() && "Second range is invalid?"); 152 if (R1.getEnd() != R2.getBegin() && 153 SM.isBeforeInTranslationUnit(R1.getEnd(), R2.getBegin())) 154 return RangeBefore; 155 if (R2.getEnd() != R1.getBegin() && 156 SM.isBeforeInTranslationUnit(R2.getEnd(), R1.getBegin())) 157 return RangeAfter; 158 return RangeOverlap; 159} 160 161/// \brief Determine if a source location falls within, before, or after a 162/// a given source range. 163static RangeComparisonResult LocationCompare(SourceManager &SM, 164 SourceLocation L, SourceRange R) { 165 assert(R.isValid() && "First range is invalid?"); 166 assert(L.isValid() && "Second range is invalid?"); 167 if (L == R.getBegin() || L == R.getEnd()) 168 return RangeOverlap; 169 if (SM.isBeforeInTranslationUnit(L, R.getBegin())) 170 return RangeBefore; 171 if (SM.isBeforeInTranslationUnit(R.getEnd(), L)) 172 return RangeAfter; 173 return RangeOverlap; 174} 175 176/// \brief Translate a Clang source range into a CIndex source range. 177/// 178/// Clang internally represents ranges where the end location points to the 179/// start of the token at the end. However, for external clients it is more 180/// useful to have a CXSourceRange be a proper half-open interval. This routine 181/// does the appropriate translation. 182CXSourceRange cxloc::translateSourceRange(const SourceManager &SM, 183 const LangOptions &LangOpts, 184 const CharSourceRange &R) { 185 // We want the last character in this location, so we will adjust the 186 // location accordingly. 187 // FIXME: How do do this with a macro instantiation location? 188 SourceLocation EndLoc = R.getEnd(); 189 if (R.isTokenRange() && !EndLoc.isInvalid() && EndLoc.isFileID()) { 190 unsigned Length = Lexer::MeasureTokenLength(EndLoc, SM, LangOpts); 191 EndLoc = EndLoc.getFileLocWithOffset(Length); 192 } 193 194 CXSourceRange Result = { { (void *)&SM, (void *)&LangOpts }, 195 R.getBegin().getRawEncoding(), 196 EndLoc.getRawEncoding() }; 197 return Result; 198} 199 200//===----------------------------------------------------------------------===// 201// Cursor visitor. 202//===----------------------------------------------------------------------===// 203 204namespace { 205 206// Cursor visitor. 207class CursorVisitor : public DeclVisitor<CursorVisitor, bool>, 208 public TypeLocVisitor<CursorVisitor, bool>, 209 public StmtVisitor<CursorVisitor, bool> 210{ 211 /// \brief The translation unit we are traversing. 212 ASTUnit *TU; 213 214 /// \brief The parent cursor whose children we are traversing. 215 CXCursor Parent; 216 217 /// \brief The declaration that serves at the parent of any statement or 218 /// expression nodes. 219 Decl *StmtParent; 220 221 /// \brief The visitor function. 222 CXCursorVisitor Visitor; 223 224 /// \brief The opaque client data, to be passed along to the visitor. 225 CXClientData ClientData; 226 227 // MaxPCHLevel - the maximum PCH level of declarations that we will pass on 228 // to the visitor. Declarations with a PCH level greater than this value will 229 // be suppressed. 230 unsigned MaxPCHLevel; 231 232 /// \brief When valid, a source range to which the cursor should restrict 233 /// its search. 234 SourceRange RegionOfInterest; 235 236 using DeclVisitor<CursorVisitor, bool>::Visit; 237 using TypeLocVisitor<CursorVisitor, bool>::Visit; 238 using StmtVisitor<CursorVisitor, bool>::Visit; 239 240 /// \brief Determine whether this particular source range comes before, comes 241 /// after, or overlaps the region of interest. 242 /// 243 /// \param R a half-open source range retrieved from the abstract syntax tree. 244 RangeComparisonResult CompareRegionOfInterest(SourceRange R); 245 246 class SetParentRAII { 247 CXCursor &Parent; 248 Decl *&StmtParent; 249 CXCursor OldParent; 250 251 public: 252 SetParentRAII(CXCursor &Parent, Decl *&StmtParent, CXCursor NewParent) 253 : Parent(Parent), StmtParent(StmtParent), OldParent(Parent) 254 { 255 Parent = NewParent; 256 if (clang_isDeclaration(Parent.kind)) 257 StmtParent = getCursorDecl(Parent); 258 } 259 260 ~SetParentRAII() { 261 Parent = OldParent; 262 if (clang_isDeclaration(Parent.kind)) 263 StmtParent = getCursorDecl(Parent); 264 } 265 }; 266 267public: 268 CursorVisitor(ASTUnit *TU, CXCursorVisitor Visitor, CXClientData ClientData, 269 unsigned MaxPCHLevel, 270 SourceRange RegionOfInterest = SourceRange()) 271 : TU(TU), Visitor(Visitor), ClientData(ClientData), 272 MaxPCHLevel(MaxPCHLevel), RegionOfInterest(RegionOfInterest) 273 { 274 Parent.kind = CXCursor_NoDeclFound; 275 Parent.data[0] = 0; 276 Parent.data[1] = 0; 277 Parent.data[2] = 0; 278 StmtParent = 0; 279 } 280 281 bool Visit(CXCursor Cursor, bool CheckedRegionOfInterest = false); 282 283 std::pair<PreprocessingRecord::iterator, PreprocessingRecord::iterator> 284 getPreprocessedEntities(); 285 286 bool VisitChildren(CXCursor Parent); 287 288 // Declaration visitors 289 bool VisitAttributes(Decl *D); 290 bool VisitBlockDecl(BlockDecl *B); 291 bool VisitCXXRecordDecl(CXXRecordDecl *D); 292 bool VisitDeclContext(DeclContext *DC); 293 bool VisitTranslationUnitDecl(TranslationUnitDecl *D); 294 bool VisitTypedefDecl(TypedefDecl *D); 295 bool VisitTagDecl(TagDecl *D); 296 bool VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl *D); 297 bool VisitClassTemplatePartialSpecializationDecl( 298 ClassTemplatePartialSpecializationDecl *D); 299 bool VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 300 bool VisitEnumConstantDecl(EnumConstantDecl *D); 301 bool VisitDeclaratorDecl(DeclaratorDecl *DD); 302 bool VisitFunctionDecl(FunctionDecl *ND); 303 bool VisitFieldDecl(FieldDecl *D); 304 bool VisitVarDecl(VarDecl *); 305 bool VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 306 bool VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 307 bool VisitClassTemplateDecl(ClassTemplateDecl *D); 308 bool VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 309 bool VisitObjCMethodDecl(ObjCMethodDecl *ND); 310 bool VisitObjCContainerDecl(ObjCContainerDecl *D); 311 bool VisitObjCCategoryDecl(ObjCCategoryDecl *ND); 312 bool VisitObjCProtocolDecl(ObjCProtocolDecl *PID); 313 bool VisitObjCPropertyDecl(ObjCPropertyDecl *PD); 314 bool VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 315 bool VisitObjCImplDecl(ObjCImplDecl *D); 316 bool VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 317 bool VisitObjCImplementationDecl(ObjCImplementationDecl *D); 318 // FIXME: ObjCCompatibleAliasDecl requires aliased-class locations. 319 bool VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D); 320 bool VisitObjCClassDecl(ObjCClassDecl *D); 321 bool VisitLinkageSpecDecl(LinkageSpecDecl *D); 322 bool VisitNamespaceDecl(NamespaceDecl *D); 323 bool VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 324 bool VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 325 bool VisitUsingDecl(UsingDecl *D); 326 bool VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 327 bool VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 328 329 // Name visitor 330 bool VisitDeclarationNameInfo(DeclarationNameInfo Name); 331 bool VisitNestedNameSpecifier(NestedNameSpecifier *NNS, SourceRange Range); 332 333 // Template visitors 334 bool VisitTemplateParameters(const TemplateParameterList *Params); 335 bool VisitTemplateName(TemplateName Name, SourceLocation Loc); 336 bool VisitTemplateArgumentLoc(const TemplateArgumentLoc &TAL); 337 338 // Type visitors 339 bool VisitQualifiedTypeLoc(QualifiedTypeLoc TL); 340 bool VisitBuiltinTypeLoc(BuiltinTypeLoc TL); 341 bool VisitTypedefTypeLoc(TypedefTypeLoc TL); 342 bool VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL); 343 bool VisitTagTypeLoc(TagTypeLoc TL); 344 bool VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL); 345 bool VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL); 346 bool VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL); 347 bool VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL); 348 bool VisitPointerTypeLoc(PointerTypeLoc TL); 349 bool VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL); 350 bool VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL); 351 bool VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL); 352 bool VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL); 353 bool VisitFunctionTypeLoc(FunctionTypeLoc TL, bool SkipResultType = false); 354 bool VisitArrayTypeLoc(ArrayTypeLoc TL); 355 bool VisitTemplateSpecializationTypeLoc(TemplateSpecializationTypeLoc TL); 356 // FIXME: Implement visitors here when the unimplemented TypeLocs get 357 // implemented 358 bool VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL); 359 bool VisitTypeOfTypeLoc(TypeOfTypeLoc TL); 360 361 // Statement visitors 362 bool VisitStmt(Stmt *S); 363 bool VisitDeclStmt(DeclStmt *S); 364 bool VisitGotoStmt(GotoStmt *S); 365 bool VisitIfStmt(IfStmt *S); 366 bool VisitSwitchStmt(SwitchStmt *S); 367 bool VisitCaseStmt(CaseStmt *S); 368 bool VisitWhileStmt(WhileStmt *S); 369 bool VisitForStmt(ForStmt *S); 370 371 // Expression visitors 372 bool VisitDeclRefExpr(DeclRefExpr *E); 373 bool VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E); 374 bool VisitBlockExpr(BlockExpr *B); 375 bool VisitCompoundLiteralExpr(CompoundLiteralExpr *E); 376 bool VisitExplicitCastExpr(ExplicitCastExpr *E); 377 bool VisitObjCMessageExpr(ObjCMessageExpr *E); 378 bool VisitObjCEncodeExpr(ObjCEncodeExpr *E); 379 bool VisitOffsetOfExpr(OffsetOfExpr *E); 380 bool VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E); 381 bool VisitMemberExpr(MemberExpr *E); 382 bool VisitAddrLabelExpr(AddrLabelExpr *E); 383 bool VisitTypesCompatibleExpr(TypesCompatibleExpr *E); 384 bool VisitVAArgExpr(VAArgExpr *E); 385 bool VisitInitListExpr(InitListExpr *E); 386 bool VisitDesignatedInitExpr(DesignatedInitExpr *E); 387 bool VisitCXXTypeidExpr(CXXTypeidExpr *E); 388 bool VisitCXXUuidofExpr(CXXUuidofExpr *E); 389 bool VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) { return false; } 390 bool VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E); 391 bool VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E); 392 bool VisitCXXNewExpr(CXXNewExpr *E); 393 bool VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E); 394 bool VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E); 395 bool VisitOverloadExpr(OverloadExpr *E); 396 bool VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E); 397 bool VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E); 398 bool VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E); 399 bool VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E); 400}; 401 402} // end anonymous namespace 403 404static SourceRange getRawCursorExtent(CXCursor C); 405 406RangeComparisonResult CursorVisitor::CompareRegionOfInterest(SourceRange R) { 407 return RangeCompare(TU->getSourceManager(), R, RegionOfInterest); 408} 409 410/// \brief Visit the given cursor and, if requested by the visitor, 411/// its children. 412/// 413/// \param Cursor the cursor to visit. 414/// 415/// \param CheckRegionOfInterest if true, then the caller already checked that 416/// this cursor is within the region of interest. 417/// 418/// \returns true if the visitation should be aborted, false if it 419/// should continue. 420bool CursorVisitor::Visit(CXCursor Cursor, bool CheckedRegionOfInterest) { 421 if (clang_isInvalid(Cursor.kind)) 422 return false; 423 424 if (clang_isDeclaration(Cursor.kind)) { 425 Decl *D = getCursorDecl(Cursor); 426 assert(D && "Invalid declaration cursor"); 427 if (D->getPCHLevel() > MaxPCHLevel) 428 return false; 429 430 if (D->isImplicit()) 431 return false; 432 } 433 434 // If we have a range of interest, and this cursor doesn't intersect with it, 435 // we're done. 436 if (RegionOfInterest.isValid() && !CheckedRegionOfInterest) { 437 SourceRange Range = getRawCursorExtent(Cursor); 438 if (Range.isInvalid() || CompareRegionOfInterest(Range)) 439 return false; 440 } 441 442 switch (Visitor(Cursor, Parent, ClientData)) { 443 case CXChildVisit_Break: 444 return true; 445 446 case CXChildVisit_Continue: 447 return false; 448 449 case CXChildVisit_Recurse: 450 return VisitChildren(Cursor); 451 } 452 453 return false; 454} 455 456std::pair<PreprocessingRecord::iterator, PreprocessingRecord::iterator> 457CursorVisitor::getPreprocessedEntities() { 458 PreprocessingRecord &PPRec 459 = *TU->getPreprocessor().getPreprocessingRecord(); 460 461 bool OnlyLocalDecls 462 = !TU->isMainFileAST() && TU->getOnlyLocalDecls(); 463 464 // There is no region of interest; we have to walk everything. 465 if (RegionOfInterest.isInvalid()) 466 return std::make_pair(PPRec.begin(OnlyLocalDecls), 467 PPRec.end(OnlyLocalDecls)); 468 469 // Find the file in which the region of interest lands. 470 SourceManager &SM = TU->getSourceManager(); 471 std::pair<FileID, unsigned> Begin 472 = SM.getDecomposedInstantiationLoc(RegionOfInterest.getBegin()); 473 std::pair<FileID, unsigned> End 474 = SM.getDecomposedInstantiationLoc(RegionOfInterest.getEnd()); 475 476 // The region of interest spans files; we have to walk everything. 477 if (Begin.first != End.first) 478 return std::make_pair(PPRec.begin(OnlyLocalDecls), 479 PPRec.end(OnlyLocalDecls)); 480 481 ASTUnit::PreprocessedEntitiesByFileMap &ByFileMap 482 = TU->getPreprocessedEntitiesByFile(); 483 if (ByFileMap.empty()) { 484 // Build the mapping from files to sets of preprocessed entities. 485 for (PreprocessingRecord::iterator E = PPRec.begin(OnlyLocalDecls), 486 EEnd = PPRec.end(OnlyLocalDecls); 487 E != EEnd; ++E) { 488 std::pair<FileID, unsigned> P 489 = SM.getDecomposedInstantiationLoc((*E)->getSourceRange().getBegin()); 490 ByFileMap[P.first].push_back(*E); 491 } 492 } 493 494 return std::make_pair(ByFileMap[Begin.first].begin(), 495 ByFileMap[Begin.first].end()); 496} 497 498/// \brief Visit the children of the given cursor. 499/// 500/// \returns true if the visitation should be aborted, false if it 501/// should continue. 502bool CursorVisitor::VisitChildren(CXCursor Cursor) { 503 if (clang_isReference(Cursor.kind)) { 504 // By definition, references have no children. 505 return false; 506 } 507 508 // Set the Parent field to Cursor, then back to its old value once we're 509 // done. 510 SetParentRAII SetParent(Parent, StmtParent, Cursor); 511 512 if (clang_isDeclaration(Cursor.kind)) { 513 Decl *D = getCursorDecl(Cursor); 514 assert(D && "Invalid declaration cursor"); 515 return VisitAttributes(D) || Visit(D); 516 } 517 518 if (clang_isStatement(Cursor.kind)) 519 return Visit(getCursorStmt(Cursor)); 520 if (clang_isExpression(Cursor.kind)) 521 return Visit(getCursorExpr(Cursor)); 522 523 if (clang_isTranslationUnit(Cursor.kind)) { 524 ASTUnit *CXXUnit = getCursorASTUnit(Cursor); 525 if (!CXXUnit->isMainFileAST() && CXXUnit->getOnlyLocalDecls() && 526 RegionOfInterest.isInvalid()) { 527 for (ASTUnit::top_level_iterator TL = CXXUnit->top_level_begin(), 528 TLEnd = CXXUnit->top_level_end(); 529 TL != TLEnd; ++TL) { 530 if (Visit(MakeCXCursor(*TL, CXXUnit), true)) 531 return true; 532 } 533 } else if (VisitDeclContext( 534 CXXUnit->getASTContext().getTranslationUnitDecl())) 535 return true; 536 537 // Walk the preprocessing record. 538 if (CXXUnit->getPreprocessor().getPreprocessingRecord()) { 539 // FIXME: Once we have the ability to deserialize a preprocessing record, 540 // do so. 541 PreprocessingRecord::iterator E, EEnd; 542 for (llvm::tie(E, EEnd) = getPreprocessedEntities(); E != EEnd; ++E) { 543 if (MacroInstantiation *MI = dyn_cast<MacroInstantiation>(*E)) { 544 if (Visit(MakeMacroInstantiationCursor(MI, CXXUnit))) 545 return true; 546 547 continue; 548 } 549 550 if (MacroDefinition *MD = dyn_cast<MacroDefinition>(*E)) { 551 if (Visit(MakeMacroDefinitionCursor(MD, CXXUnit))) 552 return true; 553 554 continue; 555 } 556 } 557 } 558 return false; 559 } 560 561 // Nothing to visit at the moment. 562 return false; 563} 564 565bool CursorVisitor::VisitBlockDecl(BlockDecl *B) { 566 if (Visit(B->getSignatureAsWritten()->getTypeLoc())) 567 return true; 568 569 if (Stmt *Body = B->getBody()) 570 return Visit(MakeCXCursor(Body, StmtParent, TU)); 571 572 return false; 573} 574 575bool CursorVisitor::VisitDeclContext(DeclContext *DC) { 576 for (DeclContext::decl_iterator 577 I = DC->decls_begin(), E = DC->decls_end(); I != E; ++I) { 578 579 Decl *D = *I; 580 if (D->getLexicalDeclContext() != DC) 581 continue; 582 583 CXCursor Cursor = MakeCXCursor(D, TU); 584 585 if (RegionOfInterest.isValid()) { 586 SourceRange Range = getRawCursorExtent(Cursor); 587 if (Range.isInvalid()) 588 continue; 589 590 switch (CompareRegionOfInterest(Range)) { 591 case RangeBefore: 592 // This declaration comes before the region of interest; skip it. 593 continue; 594 595 case RangeAfter: 596 // This declaration comes after the region of interest; we're done. 597 return false; 598 599 case RangeOverlap: 600 // This declaration overlaps the region of interest; visit it. 601 break; 602 } 603 } 604 605 if (Visit(Cursor, true)) 606 return true; 607 } 608 609 return false; 610} 611 612bool CursorVisitor::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 613 llvm_unreachable("Translation units are visited directly by Visit()"); 614 return false; 615} 616 617bool CursorVisitor::VisitTypedefDecl(TypedefDecl *D) { 618 if (TypeSourceInfo *TSInfo = D->getTypeSourceInfo()) 619 return Visit(TSInfo->getTypeLoc()); 620 621 return false; 622} 623 624bool CursorVisitor::VisitTagDecl(TagDecl *D) { 625 return VisitDeclContext(D); 626} 627 628bool CursorVisitor::VisitClassTemplateSpecializationDecl( 629 ClassTemplateSpecializationDecl *D) { 630 bool ShouldVisitBody = false; 631 switch (D->getSpecializationKind()) { 632 case TSK_Undeclared: 633 case TSK_ImplicitInstantiation: 634 // Nothing to visit 635 return false; 636 637 case TSK_ExplicitInstantiationDeclaration: 638 case TSK_ExplicitInstantiationDefinition: 639 break; 640 641 case TSK_ExplicitSpecialization: 642 ShouldVisitBody = true; 643 break; 644 } 645 646 // Visit the template arguments used in the specialization. 647 if (TypeSourceInfo *SpecType = D->getTypeAsWritten()) { 648 TypeLoc TL = SpecType->getTypeLoc(); 649 if (TemplateSpecializationTypeLoc *TSTLoc 650 = dyn_cast<TemplateSpecializationTypeLoc>(&TL)) { 651 for (unsigned I = 0, N = TSTLoc->getNumArgs(); I != N; ++I) 652 if (VisitTemplateArgumentLoc(TSTLoc->getArgLoc(I))) 653 return true; 654 } 655 } 656 657 if (ShouldVisitBody && VisitCXXRecordDecl(D)) 658 return true; 659 660 return false; 661} 662 663bool CursorVisitor::VisitClassTemplatePartialSpecializationDecl( 664 ClassTemplatePartialSpecializationDecl *D) { 665 // FIXME: Visit the "outer" template parameter lists on the TagDecl 666 // before visiting these template parameters. 667 if (VisitTemplateParameters(D->getTemplateParameters())) 668 return true; 669 670 // Visit the partial specialization arguments. 671 const TemplateArgumentLoc *TemplateArgs = D->getTemplateArgsAsWritten(); 672 for (unsigned I = 0, N = D->getNumTemplateArgsAsWritten(); I != N; ++I) 673 if (VisitTemplateArgumentLoc(TemplateArgs[I])) 674 return true; 675 676 return VisitCXXRecordDecl(D); 677} 678 679bool CursorVisitor::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 680 // Visit the default argument. 681 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) 682 if (TypeSourceInfo *DefArg = D->getDefaultArgumentInfo()) 683 if (Visit(DefArg->getTypeLoc())) 684 return true; 685 686 return false; 687} 688 689bool CursorVisitor::VisitEnumConstantDecl(EnumConstantDecl *D) { 690 if (Expr *Init = D->getInitExpr()) 691 return Visit(MakeCXCursor(Init, StmtParent, TU)); 692 return false; 693} 694 695bool CursorVisitor::VisitDeclaratorDecl(DeclaratorDecl *DD) { 696 if (TypeSourceInfo *TSInfo = DD->getTypeSourceInfo()) 697 if (Visit(TSInfo->getTypeLoc())) 698 return true; 699 700 return false; 701} 702 703/// \brief Compare two base or member initializers based on their source order. 704static int CompareCXXBaseOrMemberInitializers(const void* Xp, const void *Yp) { 705 CXXBaseOrMemberInitializer const * const *X 706 = static_cast<CXXBaseOrMemberInitializer const * const *>(Xp); 707 CXXBaseOrMemberInitializer const * const *Y 708 = static_cast<CXXBaseOrMemberInitializer const * const *>(Yp); 709 710 if ((*X)->getSourceOrder() < (*Y)->getSourceOrder()) 711 return -1; 712 else if ((*X)->getSourceOrder() > (*Y)->getSourceOrder()) 713 return 1; 714 else 715 return 0; 716} 717 718bool CursorVisitor::VisitFunctionDecl(FunctionDecl *ND) { 719 if (TypeSourceInfo *TSInfo = ND->getTypeSourceInfo()) { 720 // Visit the function declaration's syntactic components in the order 721 // written. This requires a bit of work. 722 TypeLoc TL = TSInfo->getTypeLoc(); 723 FunctionTypeLoc *FTL = dyn_cast<FunctionTypeLoc>(&TL); 724 725 // If we have a function declared directly (without the use of a typedef), 726 // visit just the return type. Otherwise, just visit the function's type 727 // now. 728 if ((FTL && !isa<CXXConversionDecl>(ND) && Visit(FTL->getResultLoc())) || 729 (!FTL && Visit(TL))) 730 return true; 731 732 // Visit the nested-name-specifier, if present. 733 if (NestedNameSpecifier *Qualifier = ND->getQualifier()) 734 if (VisitNestedNameSpecifier(Qualifier, ND->getQualifierRange())) 735 return true; 736 737 // Visit the declaration name. 738 if (VisitDeclarationNameInfo(ND->getNameInfo())) 739 return true; 740 741 // FIXME: Visit explicitly-specified template arguments! 742 743 // Visit the function parameters, if we have a function type. 744 if (FTL && VisitFunctionTypeLoc(*FTL, true)) 745 return true; 746 747 // FIXME: Attributes? 748 } 749 750 if (ND->isThisDeclarationADefinition()) { 751 if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(ND)) { 752 // Find the initializers that were written in the source. 753 llvm::SmallVector<CXXBaseOrMemberInitializer *, 4> WrittenInits; 754 for (CXXConstructorDecl::init_iterator I = Constructor->init_begin(), 755 IEnd = Constructor->init_end(); 756 I != IEnd; ++I) { 757 if (!(*I)->isWritten()) 758 continue; 759 760 WrittenInits.push_back(*I); 761 } 762 763 // Sort the initializers in source order 764 llvm::array_pod_sort(WrittenInits.begin(), WrittenInits.end(), 765 &CompareCXXBaseOrMemberInitializers); 766 767 // Visit the initializers in source order 768 for (unsigned I = 0, N = WrittenInits.size(); I != N; ++I) { 769 CXXBaseOrMemberInitializer *Init = WrittenInits[I]; 770 if (Init->isMemberInitializer()) { 771 if (Visit(MakeCursorMemberRef(Init->getMember(), 772 Init->getMemberLocation(), TU))) 773 return true; 774 } else if (TypeSourceInfo *BaseInfo = Init->getBaseClassInfo()) { 775 if (Visit(BaseInfo->getTypeLoc())) 776 return true; 777 } 778 779 // Visit the initializer value. 780 if (Expr *Initializer = Init->getInit()) 781 if (Visit(MakeCXCursor(Initializer, ND, TU))) 782 return true; 783 } 784 } 785 786 if (Visit(MakeCXCursor(ND->getBody(), StmtParent, TU))) 787 return true; 788 } 789 790 return false; 791} 792 793bool CursorVisitor::VisitFieldDecl(FieldDecl *D) { 794 if (VisitDeclaratorDecl(D)) 795 return true; 796 797 if (Expr *BitWidth = D->getBitWidth()) 798 return Visit(MakeCXCursor(BitWidth, StmtParent, TU)); 799 800 return false; 801} 802 803bool CursorVisitor::VisitVarDecl(VarDecl *D) { 804 if (VisitDeclaratorDecl(D)) 805 return true; 806 807 if (Expr *Init = D->getInit()) 808 return Visit(MakeCXCursor(Init, StmtParent, TU)); 809 810 return false; 811} 812 813bool CursorVisitor::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 814 if (VisitDeclaratorDecl(D)) 815 return true; 816 817 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited()) 818 if (Expr *DefArg = D->getDefaultArgument()) 819 return Visit(MakeCXCursor(DefArg, StmtParent, TU)); 820 821 return false; 822} 823 824bool CursorVisitor::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 825 // FIXME: Visit the "outer" template parameter lists on the FunctionDecl 826 // before visiting these template parameters. 827 if (VisitTemplateParameters(D->getTemplateParameters())) 828 return true; 829 830 return VisitFunctionDecl(D->getTemplatedDecl()); 831} 832 833bool CursorVisitor::VisitClassTemplateDecl(ClassTemplateDecl *D) { 834 // FIXME: Visit the "outer" template parameter lists on the TagDecl 835 // before visiting these template parameters. 836 if (VisitTemplateParameters(D->getTemplateParameters())) 837 return true; 838 839 return VisitCXXRecordDecl(D->getTemplatedDecl()); 840} 841 842bool CursorVisitor::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 843 if (VisitTemplateParameters(D->getTemplateParameters())) 844 return true; 845 846 if (D->hasDefaultArgument() && !D->defaultArgumentWasInherited() && 847 VisitTemplateArgumentLoc(D->getDefaultArgument())) 848 return true; 849 850 return false; 851} 852 853bool CursorVisitor::VisitObjCMethodDecl(ObjCMethodDecl *ND) { 854 if (TypeSourceInfo *TSInfo = ND->getResultTypeSourceInfo()) 855 if (Visit(TSInfo->getTypeLoc())) 856 return true; 857 858 for (ObjCMethodDecl::param_iterator P = ND->param_begin(), 859 PEnd = ND->param_end(); 860 P != PEnd; ++P) { 861 if (Visit(MakeCXCursor(*P, TU))) 862 return true; 863 } 864 865 if (ND->isThisDeclarationADefinition() && 866 Visit(MakeCXCursor(ND->getBody(), StmtParent, TU))) 867 return true; 868 869 return false; 870} 871 872bool CursorVisitor::VisitObjCContainerDecl(ObjCContainerDecl *D) { 873 return VisitDeclContext(D); 874} 875 876bool CursorVisitor::VisitObjCCategoryDecl(ObjCCategoryDecl *ND) { 877 if (Visit(MakeCursorObjCClassRef(ND->getClassInterface(), ND->getLocation(), 878 TU))) 879 return true; 880 881 ObjCCategoryDecl::protocol_loc_iterator PL = ND->protocol_loc_begin(); 882 for (ObjCCategoryDecl::protocol_iterator I = ND->protocol_begin(), 883 E = ND->protocol_end(); I != E; ++I, ++PL) 884 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 885 return true; 886 887 return VisitObjCContainerDecl(ND); 888} 889 890bool CursorVisitor::VisitObjCProtocolDecl(ObjCProtocolDecl *PID) { 891 ObjCProtocolDecl::protocol_loc_iterator PL = PID->protocol_loc_begin(); 892 for (ObjCProtocolDecl::protocol_iterator I = PID->protocol_begin(), 893 E = PID->protocol_end(); I != E; ++I, ++PL) 894 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 895 return true; 896 897 return VisitObjCContainerDecl(PID); 898} 899 900bool CursorVisitor::VisitObjCPropertyDecl(ObjCPropertyDecl *PD) { 901 if (PD->getTypeSourceInfo() && Visit(PD->getTypeSourceInfo()->getTypeLoc())) 902 return true; 903 904 // FIXME: This implements a workaround with @property declarations also being 905 // installed in the DeclContext for the @interface. Eventually this code 906 // should be removed. 907 ObjCCategoryDecl *CDecl = dyn_cast<ObjCCategoryDecl>(PD->getDeclContext()); 908 if (!CDecl || !CDecl->IsClassExtension()) 909 return false; 910 911 ObjCInterfaceDecl *ID = CDecl->getClassInterface(); 912 if (!ID) 913 return false; 914 915 IdentifierInfo *PropertyId = PD->getIdentifier(); 916 ObjCPropertyDecl *prevDecl = 917 ObjCPropertyDecl::findPropertyDecl(cast<DeclContext>(ID), PropertyId); 918 919 if (!prevDecl) 920 return false; 921 922 // Visit synthesized methods since they will be skipped when visiting 923 // the @interface. 924 if (ObjCMethodDecl *MD = prevDecl->getGetterMethodDecl()) 925 if (MD->isSynthesized() && MD->getLexicalDeclContext() == CDecl) 926 if (Visit(MakeCXCursor(MD, TU))) 927 return true; 928 929 if (ObjCMethodDecl *MD = prevDecl->getSetterMethodDecl()) 930 if (MD->isSynthesized() && MD->getLexicalDeclContext() == CDecl) 931 if (Visit(MakeCXCursor(MD, TU))) 932 return true; 933 934 return false; 935} 936 937bool CursorVisitor::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 938 // Issue callbacks for super class. 939 if (D->getSuperClass() && 940 Visit(MakeCursorObjCSuperClassRef(D->getSuperClass(), 941 D->getSuperClassLoc(), 942 TU))) 943 return true; 944 945 ObjCInterfaceDecl::protocol_loc_iterator PL = D->protocol_loc_begin(); 946 for (ObjCInterfaceDecl::protocol_iterator I = D->protocol_begin(), 947 E = D->protocol_end(); I != E; ++I, ++PL) 948 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 949 return true; 950 951 return VisitObjCContainerDecl(D); 952} 953 954bool CursorVisitor::VisitObjCImplDecl(ObjCImplDecl *D) { 955 return VisitObjCContainerDecl(D); 956} 957 958bool CursorVisitor::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 959 // 'ID' could be null when dealing with invalid code. 960 if (ObjCInterfaceDecl *ID = D->getClassInterface()) 961 if (Visit(MakeCursorObjCClassRef(ID, D->getLocation(), TU))) 962 return true; 963 964 return VisitObjCImplDecl(D); 965} 966 967bool CursorVisitor::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 968#if 0 969 // Issue callbacks for super class. 970 // FIXME: No source location information! 971 if (D->getSuperClass() && 972 Visit(MakeCursorObjCSuperClassRef(D->getSuperClass(), 973 D->getSuperClassLoc(), 974 TU))) 975 return true; 976#endif 977 978 return VisitObjCImplDecl(D); 979} 980 981bool CursorVisitor::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D) { 982 ObjCForwardProtocolDecl::protocol_loc_iterator PL = D->protocol_loc_begin(); 983 for (ObjCForwardProtocolDecl::protocol_iterator I = D->protocol_begin(), 984 E = D->protocol_end(); 985 I != E; ++I, ++PL) 986 if (Visit(MakeCursorObjCProtocolRef(*I, *PL, TU))) 987 return true; 988 989 return false; 990} 991 992bool CursorVisitor::VisitObjCClassDecl(ObjCClassDecl *D) { 993 for (ObjCClassDecl::iterator C = D->begin(), CEnd = D->end(); C != CEnd; ++C) 994 if (Visit(MakeCursorObjCClassRef(C->getInterface(), C->getLocation(), TU))) 995 return true; 996 997 return false; 998} 999 1000bool CursorVisitor::VisitNamespaceDecl(NamespaceDecl *D) { 1001 return VisitDeclContext(D); 1002} 1003 1004bool CursorVisitor::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1005 // Visit nested-name-specifier. 1006 if (NestedNameSpecifier *Qualifier = D->getQualifier()) 1007 if (VisitNestedNameSpecifier(Qualifier, D->getQualifierRange())) 1008 return true; 1009 1010 return Visit(MakeCursorNamespaceRef(D->getAliasedNamespace(), 1011 D->getTargetNameLoc(), TU)); 1012} 1013 1014bool CursorVisitor::VisitUsingDecl(UsingDecl *D) { 1015 // Visit nested-name-specifier. 1016 if (NestedNameSpecifier *Qualifier = D->getTargetNestedNameDecl()) 1017 if (VisitNestedNameSpecifier(Qualifier, D->getNestedNameRange())) 1018 return true; 1019 1020 if (Visit(MakeCursorOverloadedDeclRef(D, D->getLocation(), TU))) 1021 return true; 1022 1023 return VisitDeclarationNameInfo(D->getNameInfo()); 1024} 1025 1026bool CursorVisitor::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1027 // Visit nested-name-specifier. 1028 if (NestedNameSpecifier *Qualifier = D->getQualifier()) 1029 if (VisitNestedNameSpecifier(Qualifier, D->getQualifierRange())) 1030 return true; 1031 1032 return Visit(MakeCursorNamespaceRef(D->getNominatedNamespaceAsWritten(), 1033 D->getIdentLocation(), TU)); 1034} 1035 1036bool CursorVisitor::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1037 // Visit nested-name-specifier. 1038 if (NestedNameSpecifier *Qualifier = D->getTargetNestedNameSpecifier()) 1039 if (VisitNestedNameSpecifier(Qualifier, D->getTargetNestedNameRange())) 1040 return true; 1041 1042 return VisitDeclarationNameInfo(D->getNameInfo()); 1043} 1044 1045bool CursorVisitor::VisitUnresolvedUsingTypenameDecl( 1046 UnresolvedUsingTypenameDecl *D) { 1047 // Visit nested-name-specifier. 1048 if (NestedNameSpecifier *Qualifier = D->getTargetNestedNameSpecifier()) 1049 if (VisitNestedNameSpecifier(Qualifier, D->getTargetNestedNameRange())) 1050 return true; 1051 1052 return false; 1053} 1054 1055bool CursorVisitor::VisitDeclarationNameInfo(DeclarationNameInfo Name) { 1056 switch (Name.getName().getNameKind()) { 1057 case clang::DeclarationName::Identifier: 1058 case clang::DeclarationName::CXXLiteralOperatorName: 1059 case clang::DeclarationName::CXXOperatorName: 1060 case clang::DeclarationName::CXXUsingDirective: 1061 return false; 1062 1063 case clang::DeclarationName::CXXConstructorName: 1064 case clang::DeclarationName::CXXDestructorName: 1065 case clang::DeclarationName::CXXConversionFunctionName: 1066 if (TypeSourceInfo *TSInfo = Name.getNamedTypeInfo()) 1067 return Visit(TSInfo->getTypeLoc()); 1068 return false; 1069 1070 case clang::DeclarationName::ObjCZeroArgSelector: 1071 case clang::DeclarationName::ObjCOneArgSelector: 1072 case clang::DeclarationName::ObjCMultiArgSelector: 1073 // FIXME: Per-identifier location info? 1074 return false; 1075 } 1076 1077 return false; 1078} 1079 1080bool CursorVisitor::VisitNestedNameSpecifier(NestedNameSpecifier *NNS, 1081 SourceRange Range) { 1082 // FIXME: This whole routine is a hack to work around the lack of proper 1083 // source information in nested-name-specifiers (PR5791). Since we do have 1084 // a beginning source location, we can visit the first component of the 1085 // nested-name-specifier, if it's a single-token component. 1086 if (!NNS) 1087 return false; 1088 1089 // Get the first component in the nested-name-specifier. 1090 while (NestedNameSpecifier *Prefix = NNS->getPrefix()) 1091 NNS = Prefix; 1092 1093 switch (NNS->getKind()) { 1094 case NestedNameSpecifier::Namespace: 1095 // FIXME: The token at this source location might actually have been a 1096 // namespace alias, but we don't model that. Lame! 1097 return Visit(MakeCursorNamespaceRef(NNS->getAsNamespace(), Range.getBegin(), 1098 TU)); 1099 1100 case NestedNameSpecifier::TypeSpec: { 1101 // If the type has a form where we know that the beginning of the source 1102 // range matches up with a reference cursor. Visit the appropriate reference 1103 // cursor. 1104 Type *T = NNS->getAsType(); 1105 if (const TypedefType *Typedef = dyn_cast<TypedefType>(T)) 1106 return Visit(MakeCursorTypeRef(Typedef->getDecl(), Range.getBegin(), TU)); 1107 if (const TagType *Tag = dyn_cast<TagType>(T)) 1108 return Visit(MakeCursorTypeRef(Tag->getDecl(), Range.getBegin(), TU)); 1109 if (const TemplateSpecializationType *TST 1110 = dyn_cast<TemplateSpecializationType>(T)) 1111 return VisitTemplateName(TST->getTemplateName(), Range.getBegin()); 1112 break; 1113 } 1114 1115 case NestedNameSpecifier::TypeSpecWithTemplate: 1116 case NestedNameSpecifier::Global: 1117 case NestedNameSpecifier::Identifier: 1118 break; 1119 } 1120 1121 return false; 1122} 1123 1124bool CursorVisitor::VisitTemplateParameters( 1125 const TemplateParameterList *Params) { 1126 if (!Params) 1127 return false; 1128 1129 for (TemplateParameterList::const_iterator P = Params->begin(), 1130 PEnd = Params->end(); 1131 P != PEnd; ++P) { 1132 if (Visit(MakeCXCursor(*P, TU))) 1133 return true; 1134 } 1135 1136 return false; 1137} 1138 1139bool CursorVisitor::VisitTemplateName(TemplateName Name, SourceLocation Loc) { 1140 switch (Name.getKind()) { 1141 case TemplateName::Template: 1142 return Visit(MakeCursorTemplateRef(Name.getAsTemplateDecl(), Loc, TU)); 1143 1144 case TemplateName::OverloadedTemplate: 1145 // Visit the overloaded template set. 1146 if (Visit(MakeCursorOverloadedDeclRef(Name, Loc, TU))) 1147 return true; 1148 1149 return false; 1150 1151 case TemplateName::DependentTemplate: 1152 // FIXME: Visit nested-name-specifier. 1153 return false; 1154 1155 case TemplateName::QualifiedTemplate: 1156 // FIXME: Visit nested-name-specifier. 1157 return Visit(MakeCursorTemplateRef( 1158 Name.getAsQualifiedTemplateName()->getDecl(), 1159 Loc, TU)); 1160 } 1161 1162 return false; 1163} 1164 1165bool CursorVisitor::VisitTemplateArgumentLoc(const TemplateArgumentLoc &TAL) { 1166 switch (TAL.getArgument().getKind()) { 1167 case TemplateArgument::Null: 1168 case TemplateArgument::Integral: 1169 return false; 1170 1171 case TemplateArgument::Pack: 1172 // FIXME: Implement when variadic templates come along. 1173 return false; 1174 1175 case TemplateArgument::Type: 1176 if (TypeSourceInfo *TSInfo = TAL.getTypeSourceInfo()) 1177 return Visit(TSInfo->getTypeLoc()); 1178 return false; 1179 1180 case TemplateArgument::Declaration: 1181 if (Expr *E = TAL.getSourceDeclExpression()) 1182 return Visit(MakeCXCursor(E, StmtParent, TU)); 1183 return false; 1184 1185 case TemplateArgument::Expression: 1186 if (Expr *E = TAL.getSourceExpression()) 1187 return Visit(MakeCXCursor(E, StmtParent, TU)); 1188 return false; 1189 1190 case TemplateArgument::Template: 1191 return VisitTemplateName(TAL.getArgument().getAsTemplate(), 1192 TAL.getTemplateNameLoc()); 1193 } 1194 1195 return false; 1196} 1197 1198bool CursorVisitor::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1199 return VisitDeclContext(D); 1200} 1201 1202bool CursorVisitor::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 1203 return Visit(TL.getUnqualifiedLoc()); 1204} 1205 1206bool CursorVisitor::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { 1207 ASTContext &Context = TU->getASTContext(); 1208 1209 // Some builtin types (such as Objective-C's "id", "sel", and 1210 // "Class") have associated declarations. Create cursors for those. 1211 QualType VisitType; 1212 switch (TL.getType()->getAs<BuiltinType>()->getKind()) { 1213 case BuiltinType::Void: 1214 case BuiltinType::Bool: 1215 case BuiltinType::Char_U: 1216 case BuiltinType::UChar: 1217 case BuiltinType::Char16: 1218 case BuiltinType::Char32: 1219 case BuiltinType::UShort: 1220 case BuiltinType::UInt: 1221 case BuiltinType::ULong: 1222 case BuiltinType::ULongLong: 1223 case BuiltinType::UInt128: 1224 case BuiltinType::Char_S: 1225 case BuiltinType::SChar: 1226 case BuiltinType::WChar: 1227 case BuiltinType::Short: 1228 case BuiltinType::Int: 1229 case BuiltinType::Long: 1230 case BuiltinType::LongLong: 1231 case BuiltinType::Int128: 1232 case BuiltinType::Float: 1233 case BuiltinType::Double: 1234 case BuiltinType::LongDouble: 1235 case BuiltinType::NullPtr: 1236 case BuiltinType::Overload: 1237 case BuiltinType::Dependent: 1238 break; 1239 1240 case BuiltinType::UndeducedAuto: // FIXME: Deserves a cursor? 1241 break; 1242 1243 case BuiltinType::ObjCId: 1244 VisitType = Context.getObjCIdType(); 1245 break; 1246 1247 case BuiltinType::ObjCClass: 1248 VisitType = Context.getObjCClassType(); 1249 break; 1250 1251 case BuiltinType::ObjCSel: 1252 VisitType = Context.getObjCSelType(); 1253 break; 1254 } 1255 1256 if (!VisitType.isNull()) { 1257 if (const TypedefType *Typedef = VisitType->getAs<TypedefType>()) 1258 return Visit(MakeCursorTypeRef(Typedef->getDecl(), TL.getBuiltinLoc(), 1259 TU)); 1260 } 1261 1262 return false; 1263} 1264 1265bool CursorVisitor::VisitTypedefTypeLoc(TypedefTypeLoc TL) { 1266 return Visit(MakeCursorTypeRef(TL.getTypedefDecl(), TL.getNameLoc(), TU)); 1267} 1268 1269bool CursorVisitor::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) { 1270 return Visit(MakeCursorTypeRef(TL.getDecl(), TL.getNameLoc(), TU)); 1271} 1272 1273bool CursorVisitor::VisitTagTypeLoc(TagTypeLoc TL) { 1274 return Visit(MakeCursorTypeRef(TL.getDecl(), TL.getNameLoc(), TU)); 1275} 1276 1277bool CursorVisitor::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) { 1278 // FIXME: We can't visit the template type parameter, because there's 1279 // no context information with which we can match up the depth/index in the 1280 // type to the appropriate 1281 return false; 1282} 1283 1284bool CursorVisitor::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { 1285 if (Visit(MakeCursorObjCClassRef(TL.getIFaceDecl(), TL.getNameLoc(), TU))) 1286 return true; 1287 1288 return false; 1289} 1290 1291bool CursorVisitor::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { 1292 if (TL.hasBaseTypeAsWritten() && Visit(TL.getBaseLoc())) 1293 return true; 1294 1295 for (unsigned I = 0, N = TL.getNumProtocols(); I != N; ++I) { 1296 if (Visit(MakeCursorObjCProtocolRef(TL.getProtocol(I), TL.getProtocolLoc(I), 1297 TU))) 1298 return true; 1299 } 1300 1301 return false; 1302} 1303 1304bool CursorVisitor::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 1305 return Visit(TL.getPointeeLoc()); 1306} 1307 1308bool CursorVisitor::VisitPointerTypeLoc(PointerTypeLoc TL) { 1309 return Visit(TL.getPointeeLoc()); 1310} 1311 1312bool CursorVisitor::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { 1313 return Visit(TL.getPointeeLoc()); 1314} 1315 1316bool CursorVisitor::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { 1317 return Visit(TL.getPointeeLoc()); 1318} 1319 1320bool CursorVisitor::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { 1321 return Visit(TL.getPointeeLoc()); 1322} 1323 1324bool CursorVisitor::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { 1325 return Visit(TL.getPointeeLoc()); 1326} 1327 1328bool CursorVisitor::VisitFunctionTypeLoc(FunctionTypeLoc TL, 1329 bool SkipResultType) { 1330 if (!SkipResultType && Visit(TL.getResultLoc())) 1331 return true; 1332 1333 for (unsigned I = 0, N = TL.getNumArgs(); I != N; ++I) 1334 if (Decl *D = TL.getArg(I)) 1335 if (Visit(MakeCXCursor(D, TU))) 1336 return true; 1337 1338 return false; 1339} 1340 1341bool CursorVisitor::VisitArrayTypeLoc(ArrayTypeLoc TL) { 1342 if (Visit(TL.getElementLoc())) 1343 return true; 1344 1345 if (Expr *Size = TL.getSizeExpr()) 1346 return Visit(MakeCXCursor(Size, StmtParent, TU)); 1347 1348 return false; 1349} 1350 1351bool CursorVisitor::VisitTemplateSpecializationTypeLoc( 1352 TemplateSpecializationTypeLoc TL) { 1353 // Visit the template name. 1354 if (VisitTemplateName(TL.getTypePtr()->getTemplateName(), 1355 TL.getTemplateNameLoc())) 1356 return true; 1357 1358 // Visit the template arguments. 1359 for (unsigned I = 0, N = TL.getNumArgs(); I != N; ++I) 1360 if (VisitTemplateArgumentLoc(TL.getArgLoc(I))) 1361 return true; 1362 1363 return false; 1364} 1365 1366bool CursorVisitor::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { 1367 return Visit(MakeCXCursor(TL.getUnderlyingExpr(), StmtParent, TU)); 1368} 1369 1370bool CursorVisitor::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { 1371 if (TypeSourceInfo *TSInfo = TL.getUnderlyingTInfo()) 1372 return Visit(TSInfo->getTypeLoc()); 1373 1374 return false; 1375} 1376 1377bool CursorVisitor::VisitStmt(Stmt *S) { 1378 for (Stmt::child_iterator Child = S->child_begin(), ChildEnd = S->child_end(); 1379 Child != ChildEnd; ++Child) { 1380 if (Stmt *C = *Child) 1381 if (Visit(MakeCXCursor(C, StmtParent, TU))) 1382 return true; 1383 } 1384 1385 return false; 1386} 1387 1388bool CursorVisitor::VisitCaseStmt(CaseStmt *S) { 1389 // Specially handle CaseStmts because they can be nested, e.g.: 1390 // 1391 // case 1: 1392 // case 2: 1393 // 1394 // In this case the second CaseStmt is the child of the first. Walking 1395 // these recursively can blow out the stack. 1396 CXCursor Cursor = MakeCXCursor(S, StmtParent, TU); 1397 while (true) { 1398 // Set the Parent field to Cursor, then back to its old value once we're 1399 // done. 1400 SetParentRAII SetParent(Parent, StmtParent, Cursor); 1401 1402 if (Stmt *LHS = S->getLHS()) 1403 if (Visit(MakeCXCursor(LHS, StmtParent, TU))) 1404 return true; 1405 if (Stmt *RHS = S->getRHS()) 1406 if (Visit(MakeCXCursor(RHS, StmtParent, TU))) 1407 return true; 1408 if (Stmt *SubStmt = S->getSubStmt()) { 1409 if (!isa<CaseStmt>(SubStmt)) 1410 return Visit(MakeCXCursor(SubStmt, StmtParent, TU)); 1411 1412 // Specially handle 'CaseStmt' so that we don't blow out the stack. 1413 CaseStmt *CS = cast<CaseStmt>(SubStmt); 1414 Cursor = MakeCXCursor(CS, StmtParent, TU); 1415 if (RegionOfInterest.isValid()) { 1416 SourceRange Range = CS->getSourceRange(); 1417 if (Range.isInvalid() || CompareRegionOfInterest(Range)) 1418 return false; 1419 } 1420 1421 switch (Visitor(Cursor, Parent, ClientData)) { 1422 case CXChildVisit_Break: return true; 1423 case CXChildVisit_Continue: return false; 1424 case CXChildVisit_Recurse: 1425 // Perform tail-recursion manually. 1426 S = CS; 1427 continue; 1428 } 1429 } 1430 return false; 1431 } 1432} 1433 1434bool CursorVisitor::VisitDeclStmt(DeclStmt *S) { 1435 for (DeclStmt::decl_iterator D = S->decl_begin(), DEnd = S->decl_end(); 1436 D != DEnd; ++D) { 1437 if (*D && Visit(MakeCXCursor(*D, TU))) 1438 return true; 1439 } 1440 1441 return false; 1442} 1443 1444bool CursorVisitor::VisitGotoStmt(GotoStmt *S) { 1445 return Visit(MakeCursorLabelRef(S->getLabel(), S->getLabelLoc(), TU)); 1446} 1447 1448bool CursorVisitor::VisitIfStmt(IfStmt *S) { 1449 if (VarDecl *Var = S->getConditionVariable()) { 1450 if (Visit(MakeCXCursor(Var, TU))) 1451 return true; 1452 } 1453 1454 if (S->getCond() && Visit(MakeCXCursor(S->getCond(), StmtParent, TU))) 1455 return true; 1456 if (S->getThen() && Visit(MakeCXCursor(S->getThen(), StmtParent, TU))) 1457 return true; 1458 if (S->getElse() && Visit(MakeCXCursor(S->getElse(), StmtParent, TU))) 1459 return true; 1460 1461 return false; 1462} 1463 1464bool CursorVisitor::VisitSwitchStmt(SwitchStmt *S) { 1465 if (VarDecl *Var = S->getConditionVariable()) { 1466 if (Visit(MakeCXCursor(Var, TU))) 1467 return true; 1468 } 1469 1470 if (S->getCond() && Visit(MakeCXCursor(S->getCond(), StmtParent, TU))) 1471 return true; 1472 if (S->getBody() && Visit(MakeCXCursor(S->getBody(), StmtParent, TU))) 1473 return true; 1474 1475 return false; 1476} 1477 1478bool CursorVisitor::VisitWhileStmt(WhileStmt *S) { 1479 if (VarDecl *Var = S->getConditionVariable()) { 1480 if (Visit(MakeCXCursor(Var, TU))) 1481 return true; 1482 } 1483 1484 if (S->getCond() && Visit(MakeCXCursor(S->getCond(), StmtParent, TU))) 1485 return true; 1486 if (S->getBody() && Visit(MakeCXCursor(S->getBody(), StmtParent, TU))) 1487 return true; 1488 1489 return false; 1490} 1491 1492bool CursorVisitor::VisitForStmt(ForStmt *S) { 1493 if (S->getInit() && Visit(MakeCXCursor(S->getInit(), StmtParent, TU))) 1494 return true; 1495 if (VarDecl *Var = S->getConditionVariable()) { 1496 if (Visit(MakeCXCursor(Var, TU))) 1497 return true; 1498 } 1499 1500 if (S->getCond() && Visit(MakeCXCursor(S->getCond(), StmtParent, TU))) 1501 return true; 1502 if (S->getInc() && Visit(MakeCXCursor(S->getInc(), StmtParent, TU))) 1503 return true; 1504 if (S->getBody() && Visit(MakeCXCursor(S->getBody(), StmtParent, TU))) 1505 return true; 1506 1507 return false; 1508} 1509 1510bool CursorVisitor::VisitDeclRefExpr(DeclRefExpr *E) { 1511 // Visit nested-name-specifier, if present. 1512 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1513 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1514 return true; 1515 1516 // Visit declaration name. 1517 if (VisitDeclarationNameInfo(E->getNameInfo())) 1518 return true; 1519 1520 // Visit explicitly-specified template arguments. 1521 if (E->hasExplicitTemplateArgs()) { 1522 ExplicitTemplateArgumentList &Args = E->getExplicitTemplateArgs(); 1523 for (TemplateArgumentLoc *Arg = Args.getTemplateArgs(), 1524 *ArgEnd = Arg + Args.NumTemplateArgs; 1525 Arg != ArgEnd; ++Arg) 1526 if (VisitTemplateArgumentLoc(*Arg)) 1527 return true; 1528 } 1529 1530 return false; 1531} 1532 1533bool CursorVisitor::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) { 1534 if (Visit(MakeCXCursor(E->getArg(0), StmtParent, TU))) 1535 return true; 1536 1537 if (Visit(MakeCXCursor(E->getCallee(), StmtParent, TU))) 1538 return true; 1539 1540 for (unsigned I = 1, N = E->getNumArgs(); I != N; ++I) 1541 if (Visit(MakeCXCursor(E->getArg(I), StmtParent, TU))) 1542 return true; 1543 1544 return false; 1545} 1546 1547bool CursorVisitor::VisitCXXRecordDecl(CXXRecordDecl *D) { 1548 if (D->isDefinition()) { 1549 for (CXXRecordDecl::base_class_iterator I = D->bases_begin(), 1550 E = D->bases_end(); I != E; ++I) { 1551 if (Visit(cxcursor::MakeCursorCXXBaseSpecifier(I, TU))) 1552 return true; 1553 } 1554 } 1555 1556 return VisitTagDecl(D); 1557} 1558 1559 1560bool CursorVisitor::VisitBlockExpr(BlockExpr *B) { 1561 return Visit(B->getBlockDecl()); 1562} 1563 1564bool CursorVisitor::VisitOffsetOfExpr(OffsetOfExpr *E) { 1565 // Visit the type into which we're computing an offset. 1566 if (Visit(E->getTypeSourceInfo()->getTypeLoc())) 1567 return true; 1568 1569 // Visit the components of the offsetof expression. 1570 for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) { 1571 typedef OffsetOfExpr::OffsetOfNode OffsetOfNode; 1572 const OffsetOfNode &Node = E->getComponent(I); 1573 switch (Node.getKind()) { 1574 case OffsetOfNode::Array: 1575 if (Visit(MakeCXCursor(E->getIndexExpr(Node.getArrayExprIndex()), 1576 StmtParent, TU))) 1577 return true; 1578 break; 1579 1580 case OffsetOfNode::Field: 1581 if (Visit(MakeCursorMemberRef(Node.getField(), Node.getRange().getEnd(), 1582 TU))) 1583 return true; 1584 break; 1585 1586 case OffsetOfNode::Identifier: 1587 case OffsetOfNode::Base: 1588 continue; 1589 } 1590 } 1591 1592 return false; 1593} 1594 1595bool CursorVisitor::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E) { 1596 if (E->isArgumentType()) { 1597 if (TypeSourceInfo *TSInfo = E->getArgumentTypeInfo()) 1598 return Visit(TSInfo->getTypeLoc()); 1599 1600 return false; 1601 } 1602 1603 return VisitExpr(E); 1604} 1605 1606bool CursorVisitor::VisitMemberExpr(MemberExpr *E) { 1607 // Visit the base expression. 1608 if (Visit(MakeCXCursor(E->getBase(), StmtParent, TU))) 1609 return true; 1610 1611 // Visit the nested-name-specifier 1612 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1613 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1614 return true; 1615 1616 // Visit the declaration name. 1617 if (VisitDeclarationNameInfo(E->getMemberNameInfo())) 1618 return true; 1619 1620 // Visit the explicitly-specified template arguments, if any. 1621 if (E->hasExplicitTemplateArgs()) { 1622 for (const TemplateArgumentLoc *Arg = E->getTemplateArgs(), 1623 *ArgEnd = Arg + E->getNumTemplateArgs(); 1624 Arg != ArgEnd; 1625 ++Arg) { 1626 if (VisitTemplateArgumentLoc(*Arg)) 1627 return true; 1628 } 1629 } 1630 1631 return false; 1632} 1633 1634bool CursorVisitor::VisitExplicitCastExpr(ExplicitCastExpr *E) { 1635 if (TypeSourceInfo *TSInfo = E->getTypeInfoAsWritten()) 1636 if (Visit(TSInfo->getTypeLoc())) 1637 return true; 1638 1639 return VisitCastExpr(E); 1640} 1641 1642bool CursorVisitor::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) { 1643 if (TypeSourceInfo *TSInfo = E->getTypeSourceInfo()) 1644 if (Visit(TSInfo->getTypeLoc())) 1645 return true; 1646 1647 return VisitExpr(E); 1648} 1649 1650bool CursorVisitor::VisitAddrLabelExpr(AddrLabelExpr *E) { 1651 return Visit(MakeCursorLabelRef(E->getLabel(), E->getLabelLoc(), TU)); 1652} 1653 1654bool CursorVisitor::VisitTypesCompatibleExpr(TypesCompatibleExpr *E) { 1655 return Visit(E->getArgTInfo1()->getTypeLoc()) || 1656 Visit(E->getArgTInfo2()->getTypeLoc()); 1657} 1658 1659bool CursorVisitor::VisitVAArgExpr(VAArgExpr *E) { 1660 if (Visit(E->getWrittenTypeInfo()->getTypeLoc())) 1661 return true; 1662 1663 return Visit(MakeCXCursor(E->getSubExpr(), StmtParent, TU)); 1664} 1665 1666bool CursorVisitor::VisitInitListExpr(InitListExpr *E) { 1667 // We care about the syntactic form of the initializer list, only. 1668 if (InitListExpr *Syntactic = E->getSyntacticForm()) 1669 return VisitExpr(Syntactic); 1670 1671 return VisitExpr(E); 1672} 1673 1674bool CursorVisitor::VisitDesignatedInitExpr(DesignatedInitExpr *E) { 1675 // Visit the designators. 1676 typedef DesignatedInitExpr::Designator Designator; 1677 for (DesignatedInitExpr::designators_iterator D = E->designators_begin(), 1678 DEnd = E->designators_end(); 1679 D != DEnd; ++D) { 1680 if (D->isFieldDesignator()) { 1681 if (FieldDecl *Field = D->getField()) 1682 if (Visit(MakeCursorMemberRef(Field, D->getFieldLoc(), TU))) 1683 return true; 1684 1685 continue; 1686 } 1687 1688 if (D->isArrayDesignator()) { 1689 if (Visit(MakeCXCursor(E->getArrayIndex(*D), StmtParent, TU))) 1690 return true; 1691 1692 continue; 1693 } 1694 1695 assert(D->isArrayRangeDesignator() && "Unknown designator kind"); 1696 if (Visit(MakeCXCursor(E->getArrayRangeStart(*D), StmtParent, TU)) || 1697 Visit(MakeCXCursor(E->getArrayRangeEnd(*D), StmtParent, TU))) 1698 return true; 1699 } 1700 1701 // Visit the initializer value itself. 1702 return Visit(MakeCXCursor(E->getInit(), StmtParent, TU)); 1703} 1704 1705bool CursorVisitor::VisitCXXTypeidExpr(CXXTypeidExpr *E) { 1706 if (E->isTypeOperand()) { 1707 if (TypeSourceInfo *TSInfo = E->getTypeOperandSourceInfo()) 1708 return Visit(TSInfo->getTypeLoc()); 1709 1710 return false; 1711 } 1712 1713 return VisitExpr(E); 1714} 1715 1716bool CursorVisitor::VisitCXXUuidofExpr(CXXUuidofExpr *E) { 1717 if (E->isTypeOperand()) { 1718 if (TypeSourceInfo *TSInfo = E->getTypeOperandSourceInfo()) 1719 return Visit(TSInfo->getTypeLoc()); 1720 1721 return false; 1722 } 1723 1724 return VisitExpr(E); 1725} 1726 1727bool CursorVisitor::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) { 1728 if (TypeSourceInfo *TSInfo = E->getTypeSourceInfo()) 1729 return Visit(TSInfo->getTypeLoc()); 1730 1731 return VisitExpr(E); 1732} 1733 1734bool CursorVisitor::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) { 1735 if (TypeSourceInfo *TSInfo = E->getTypeSourceInfo()) 1736 return Visit(TSInfo->getTypeLoc()); 1737 1738 return false; 1739} 1740 1741bool CursorVisitor::VisitCXXNewExpr(CXXNewExpr *E) { 1742 // Visit placement arguments. 1743 for (unsigned I = 0, N = E->getNumPlacementArgs(); I != N; ++I) 1744 if (Visit(MakeCXCursor(E->getPlacementArg(I), StmtParent, TU))) 1745 return true; 1746 1747 // Visit the allocated type. 1748 if (TypeSourceInfo *TSInfo = E->getAllocatedTypeSourceInfo()) 1749 if (Visit(TSInfo->getTypeLoc())) 1750 return true; 1751 1752 // Visit the array size, if any. 1753 if (E->isArray() && Visit(MakeCXCursor(E->getArraySize(), StmtParent, TU))) 1754 return true; 1755 1756 // Visit the initializer or constructor arguments. 1757 for (unsigned I = 0, N = E->getNumConstructorArgs(); I != N; ++I) 1758 if (Visit(MakeCXCursor(E->getConstructorArg(I), StmtParent, TU))) 1759 return true; 1760 1761 return false; 1762} 1763 1764bool CursorVisitor::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) { 1765 // Visit base expression. 1766 if (Visit(MakeCXCursor(E->getBase(), StmtParent, TU))) 1767 return true; 1768 1769 // Visit the nested-name-specifier. 1770 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1771 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1772 return true; 1773 1774 // Visit the scope type that looks disturbingly like the nested-name-specifier 1775 // but isn't. 1776 if (TypeSourceInfo *TSInfo = E->getScopeTypeInfo()) 1777 if (Visit(TSInfo->getTypeLoc())) 1778 return true; 1779 1780 // Visit the name of the type being destroyed. 1781 if (TypeSourceInfo *TSInfo = E->getDestroyedTypeInfo()) 1782 if (Visit(TSInfo->getTypeLoc())) 1783 return true; 1784 1785 return false; 1786} 1787 1788bool CursorVisitor::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E) { 1789 return Visit(E->getQueriedTypeSourceInfo()->getTypeLoc()); 1790} 1791 1792bool CursorVisitor::VisitOverloadExpr(OverloadExpr *E) { 1793 // Visit the nested-name-specifier. 1794 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1795 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1796 return true; 1797 1798 // Visit the declaration name. 1799 if (VisitDeclarationNameInfo(E->getNameInfo())) 1800 return true; 1801 1802 // Visit the overloaded declaration reference. 1803 if (Visit(MakeCursorOverloadedDeclRef(E, TU))) 1804 return true; 1805 1806 // Visit the explicitly-specified template arguments. 1807 if (const ExplicitTemplateArgumentList *ArgList 1808 = E->getOptionalExplicitTemplateArgs()) { 1809 for (const TemplateArgumentLoc *Arg = ArgList->getTemplateArgs(), 1810 *ArgEnd = Arg + ArgList->NumTemplateArgs; 1811 Arg != ArgEnd; ++Arg) { 1812 if (VisitTemplateArgumentLoc(*Arg)) 1813 return true; 1814 } 1815 } 1816 1817 return false; 1818} 1819 1820bool CursorVisitor::VisitDependentScopeDeclRefExpr( 1821 DependentScopeDeclRefExpr *E) { 1822 // Visit the nested-name-specifier. 1823 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1824 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1825 return true; 1826 1827 // Visit the declaration name. 1828 if (VisitDeclarationNameInfo(E->getNameInfo())) 1829 return true; 1830 1831 // Visit the explicitly-specified template arguments. 1832 if (const ExplicitTemplateArgumentList *ArgList 1833 = E->getOptionalExplicitTemplateArgs()) { 1834 for (const TemplateArgumentLoc *Arg = ArgList->getTemplateArgs(), 1835 *ArgEnd = Arg + ArgList->NumTemplateArgs; 1836 Arg != ArgEnd; ++Arg) { 1837 if (VisitTemplateArgumentLoc(*Arg)) 1838 return true; 1839 } 1840 } 1841 1842 return false; 1843} 1844 1845bool CursorVisitor::VisitCXXUnresolvedConstructExpr( 1846 CXXUnresolvedConstructExpr *E) { 1847 if (TypeSourceInfo *TSInfo = E->getTypeSourceInfo()) 1848 if (Visit(TSInfo->getTypeLoc())) 1849 return true; 1850 1851 return VisitExpr(E); 1852} 1853 1854bool CursorVisitor::VisitCXXDependentScopeMemberExpr( 1855 CXXDependentScopeMemberExpr *E) { 1856 // Visit the base expression, if there is one. 1857 if (!E->isImplicitAccess() && 1858 Visit(MakeCXCursor(E->getBase(), StmtParent, TU))) 1859 return true; 1860 1861 // Visit the nested-name-specifier. 1862 if (NestedNameSpecifier *Qualifier = E->getQualifier()) 1863 if (VisitNestedNameSpecifier(Qualifier, E->getQualifierRange())) 1864 return true; 1865 1866 // Visit the declaration name. 1867 if (VisitDeclarationNameInfo(E->getMemberNameInfo())) 1868 return true; 1869 1870 // Visit the explicitly-specified template arguments. 1871 if (const ExplicitTemplateArgumentList *ArgList 1872 = E->getOptionalExplicitTemplateArgs()) { 1873 for (const TemplateArgumentLoc *Arg = ArgList->getTemplateArgs(), 1874 *ArgEnd = Arg + ArgList->NumTemplateArgs; 1875 Arg != ArgEnd; ++Arg) { 1876 if (VisitTemplateArgumentLoc(*Arg)) 1877 return true; 1878 } 1879 } 1880 1881 return false; 1882} 1883 1884bool CursorVisitor::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) { 1885 // Visit the base expression, if there is one. 1886 if (!E->isImplicitAccess() && 1887 Visit(MakeCXCursor(E->getBase(), StmtParent, TU))) 1888 return true; 1889 1890 return VisitOverloadExpr(E); 1891} 1892 1893bool CursorVisitor::VisitObjCMessageExpr(ObjCMessageExpr *E) { 1894 if (TypeSourceInfo *TSInfo = E->getClassReceiverTypeInfo()) 1895 if (Visit(TSInfo->getTypeLoc())) 1896 return true; 1897 1898 return VisitExpr(E); 1899} 1900 1901bool CursorVisitor::VisitObjCEncodeExpr(ObjCEncodeExpr *E) { 1902 return Visit(E->getEncodedTypeSourceInfo()->getTypeLoc()); 1903} 1904 1905 1906bool CursorVisitor::VisitAttributes(Decl *D) { 1907 for (AttrVec::const_iterator i = D->attr_begin(), e = D->attr_end(); 1908 i != e; ++i) 1909 if (Visit(MakeCXCursor(*i, D, TU))) 1910 return true; 1911 1912 return false; 1913} 1914 1915static llvm::sys::Mutex EnableMultithreadingMutex; 1916static bool EnabledMultithreading; 1917 1918extern "C" { 1919CXIndex clang_createIndex(int excludeDeclarationsFromPCH, 1920 int displayDiagnostics) { 1921 // We use crash recovery to make some of our APIs more reliable, implicitly 1922 // enable it. 1923 llvm::CrashRecoveryContext::Enable(); 1924 1925 // Enable support for multithreading in LLVM. 1926 { 1927 llvm::sys::ScopedLock L(EnableMultithreadingMutex); 1928 if (!EnabledMultithreading) { 1929 llvm::llvm_start_multithreaded(); 1930 EnabledMultithreading = true; 1931 } 1932 } 1933 1934 CIndexer *CIdxr = new CIndexer(); 1935 if (excludeDeclarationsFromPCH) 1936 CIdxr->setOnlyLocalDecls(); 1937 if (displayDiagnostics) 1938 CIdxr->setDisplayDiagnostics(); 1939 return CIdxr; 1940} 1941 1942void clang_disposeIndex(CXIndex CIdx) { 1943 if (CIdx) 1944 delete static_cast<CIndexer *>(CIdx); 1945} 1946 1947void clang_setUseExternalASTGeneration(CXIndex CIdx, int value) { 1948 if (CIdx) { 1949 CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx); 1950 CXXIdx->setUseExternalASTGeneration(value); 1951 } 1952} 1953 1954CXTranslationUnit clang_createTranslationUnit(CXIndex CIdx, 1955 const char *ast_filename) { 1956 if (!CIdx) 1957 return 0; 1958 1959 CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx); 1960 1961 llvm::IntrusiveRefCntPtr<Diagnostic> Diags; 1962 return ASTUnit::LoadFromASTFile(ast_filename, Diags, 1963 CXXIdx->getOnlyLocalDecls(), 1964 0, 0, true); 1965} 1966 1967unsigned clang_defaultEditingTranslationUnitOptions() { 1968 return CXTranslationUnit_PrecompiledPreamble | 1969 CXTranslationUnit_CacheCompletionResults; 1970} 1971 1972CXTranslationUnit 1973clang_createTranslationUnitFromSourceFile(CXIndex CIdx, 1974 const char *source_filename, 1975 int num_command_line_args, 1976 const char * const *command_line_args, 1977 unsigned num_unsaved_files, 1978 struct CXUnsavedFile *unsaved_files) { 1979 return clang_parseTranslationUnit(CIdx, source_filename, 1980 command_line_args, num_command_line_args, 1981 unsaved_files, num_unsaved_files, 1982 CXTranslationUnit_DetailedPreprocessingRecord); 1983} 1984 1985struct ParseTranslationUnitInfo { 1986 CXIndex CIdx; 1987 const char *source_filename; 1988 const char *const *command_line_args; 1989 int num_command_line_args; 1990 struct CXUnsavedFile *unsaved_files; 1991 unsigned num_unsaved_files; 1992 unsigned options; 1993 CXTranslationUnit result; 1994}; 1995static void clang_parseTranslationUnit_Impl(void *UserData) { 1996 ParseTranslationUnitInfo *PTUI = 1997 static_cast<ParseTranslationUnitInfo*>(UserData); 1998 CXIndex CIdx = PTUI->CIdx; 1999 const char *source_filename = PTUI->source_filename; 2000 const char * const *command_line_args = PTUI->command_line_args; 2001 int num_command_line_args = PTUI->num_command_line_args; 2002 struct CXUnsavedFile *unsaved_files = PTUI->unsaved_files; 2003 unsigned num_unsaved_files = PTUI->num_unsaved_files; 2004 unsigned options = PTUI->options; 2005 PTUI->result = 0; 2006 2007 if (!CIdx) 2008 return; 2009 2010 CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx); 2011 2012 bool PrecompilePreamble = options & CXTranslationUnit_PrecompiledPreamble; 2013 bool CompleteTranslationUnit 2014 = ((options & CXTranslationUnit_Incomplete) == 0); 2015 bool CacheCodeCompetionResults 2016 = options & CXTranslationUnit_CacheCompletionResults; 2017 2018 // Configure the diagnostics. 2019 DiagnosticOptions DiagOpts; 2020 llvm::IntrusiveRefCntPtr<Diagnostic> Diags; 2021 Diags = CompilerInstance::createDiagnostics(DiagOpts, 0, 0); 2022 2023 llvm::SmallVector<ASTUnit::RemappedFile, 4> RemappedFiles; 2024 for (unsigned I = 0; I != num_unsaved_files; ++I) { 2025 llvm::StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length); 2026 const llvm::MemoryBuffer *Buffer 2027 = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename); 2028 RemappedFiles.push_back(std::make_pair(unsaved_files[I].Filename, 2029 Buffer)); 2030 } 2031 2032 if (!CXXIdx->getUseExternalASTGeneration()) { 2033 llvm::SmallVector<const char *, 16> Args; 2034 2035 // The 'source_filename' argument is optional. If the caller does not 2036 // specify it then it is assumed that the source file is specified 2037 // in the actual argument list. 2038 if (source_filename) 2039 Args.push_back(source_filename); 2040 2041 // Since the Clang C library is primarily used by batch tools dealing with 2042 // (often very broken) source code, where spell-checking can have a 2043 // significant negative impact on performance (particularly when 2044 // precompiled headers are involved), we disable it by default. 2045 // Note that we place this argument early in the list, so that it can be 2046 // overridden by the caller with "-fspell-checking". 2047 Args.push_back("-fno-spell-checking"); 2048 2049 Args.insert(Args.end(), command_line_args, 2050 command_line_args + num_command_line_args); 2051 2052 // Do we need the detailed preprocessing record? 2053 if (options & CXTranslationUnit_DetailedPreprocessingRecord) { 2054 Args.push_back("-Xclang"); 2055 Args.push_back("-detailed-preprocessing-record"); 2056 } 2057 2058 unsigned NumErrors = Diags->getNumErrors(); 2059 2060#ifdef USE_CRASHTRACER 2061 ArgsCrashTracerInfo ACTI(Args); 2062#endif 2063 2064 llvm::OwningPtr<ASTUnit> Unit( 2065 ASTUnit::LoadFromCommandLine(Args.data(), Args.data() + Args.size(), 2066 Diags, 2067 CXXIdx->getClangResourcesPath(), 2068 CXXIdx->getOnlyLocalDecls(), 2069 RemappedFiles.data(), 2070 RemappedFiles.size(), 2071 /*CaptureDiagnostics=*/true, 2072 PrecompilePreamble, 2073 CompleteTranslationUnit, 2074 CacheCodeCompetionResults)); 2075 2076 if (NumErrors != Diags->getNumErrors()) { 2077 // Make sure to check that 'Unit' is non-NULL. 2078 if (CXXIdx->getDisplayDiagnostics() && Unit.get()) { 2079 for (ASTUnit::stored_diag_iterator D = Unit->stored_diag_begin(), 2080 DEnd = Unit->stored_diag_end(); 2081 D != DEnd; ++D) { 2082 CXStoredDiagnostic Diag(*D, Unit->getASTContext().getLangOptions()); 2083 CXString Msg = clang_formatDiagnostic(&Diag, 2084 clang_defaultDiagnosticDisplayOptions()); 2085 fprintf(stderr, "%s\n", clang_getCString(Msg)); 2086 clang_disposeString(Msg); 2087 } 2088#ifdef LLVM_ON_WIN32 2089 // On Windows, force a flush, since there may be multiple copies of 2090 // stderr and stdout in the file system, all with different buffers 2091 // but writing to the same device. 2092 fflush(stderr); 2093#endif 2094 } 2095 } 2096 2097 PTUI->result = Unit.take(); 2098 return; 2099 } 2100 2101 // Build up the arguments for invoking 'clang'. 2102 std::vector<const char *> argv; 2103 2104 // First add the complete path to the 'clang' executable. 2105 llvm::sys::Path ClangPath = static_cast<CIndexer *>(CIdx)->getClangPath(); 2106 argv.push_back(ClangPath.c_str()); 2107 2108 // Add the '-emit-ast' option as our execution mode for 'clang'. 2109 argv.push_back("-emit-ast"); 2110 2111 // The 'source_filename' argument is optional. If the caller does not 2112 // specify it then it is assumed that the source file is specified 2113 // in the actual argument list. 2114 if (source_filename) 2115 argv.push_back(source_filename); 2116 2117 // Generate a temporary name for the AST file. 2118 argv.push_back("-o"); 2119 char astTmpFile[L_tmpnam]; 2120 argv.push_back(tmpnam(astTmpFile)); 2121 2122 // Since the Clang C library is primarily used by batch tools dealing with 2123 // (often very broken) source code, where spell-checking can have a 2124 // significant negative impact on performance (particularly when 2125 // precompiled headers are involved), we disable it by default. 2126 // Note that we place this argument early in the list, so that it can be 2127 // overridden by the caller with "-fspell-checking". 2128 argv.push_back("-fno-spell-checking"); 2129 2130 // Remap any unsaved files to temporary files. 2131 std::vector<llvm::sys::Path> TemporaryFiles; 2132 std::vector<std::string> RemapArgs; 2133 if (RemapFiles(num_unsaved_files, unsaved_files, RemapArgs, TemporaryFiles)) 2134 return; 2135 2136 // The pointers into the elements of RemapArgs are stable because we 2137 // won't be adding anything to RemapArgs after this point. 2138 for (unsigned i = 0, e = RemapArgs.size(); i != e; ++i) 2139 argv.push_back(RemapArgs[i].c_str()); 2140 2141 // Process the compiler options, stripping off '-o', '-c', '-fsyntax-only'. 2142 for (int i = 0; i < num_command_line_args; ++i) 2143 if (const char *arg = command_line_args[i]) { 2144 if (strcmp(arg, "-o") == 0) { 2145 ++i; // Also skip the matching argument. 2146 continue; 2147 } 2148 if (strcmp(arg, "-emit-ast") == 0 || 2149 strcmp(arg, "-c") == 0 || 2150 strcmp(arg, "-fsyntax-only") == 0) { 2151 continue; 2152 } 2153 2154 // Keep the argument. 2155 argv.push_back(arg); 2156 } 2157 2158 // Generate a temporary name for the diagnostics file. 2159 char tmpFileResults[L_tmpnam]; 2160 char *tmpResultsFileName = tmpnam(tmpFileResults); 2161 llvm::sys::Path DiagnosticsFile(tmpResultsFileName); 2162 TemporaryFiles.push_back(DiagnosticsFile); 2163 argv.push_back("-fdiagnostics-binary"); 2164 2165 // Do we need the detailed preprocessing record? 2166 if (options & CXTranslationUnit_DetailedPreprocessingRecord) { 2167 argv.push_back("-Xclang"); 2168 argv.push_back("-detailed-preprocessing-record"); 2169 } 2170 2171 // Add the null terminator. 2172 argv.push_back(NULL); 2173 2174 // Invoke 'clang'. 2175 llvm::sys::Path DevNull; // leave empty, causes redirection to /dev/null 2176 // on Unix or NUL (Windows). 2177 std::string ErrMsg; 2178 const llvm::sys::Path *Redirects[] = { &DevNull, &DevNull, &DiagnosticsFile, 2179 NULL }; 2180 llvm::sys::Program::ExecuteAndWait(ClangPath, &argv[0], /* env */ NULL, 2181 /* redirects */ &Redirects[0], 2182 /* secondsToWait */ 0, /* memoryLimits */ 0, &ErrMsg); 2183 2184 if (!ErrMsg.empty()) { 2185 std::string AllArgs; 2186 for (std::vector<const char*>::iterator I = argv.begin(), E = argv.end(); 2187 I != E; ++I) { 2188 AllArgs += ' '; 2189 if (*I) 2190 AllArgs += *I; 2191 } 2192 2193 Diags->Report(diag::err_fe_invoking) << AllArgs << ErrMsg; 2194 } 2195 2196 ASTUnit *ATU = ASTUnit::LoadFromASTFile(astTmpFile, Diags, 2197 CXXIdx->getOnlyLocalDecls(), 2198 RemappedFiles.data(), 2199 RemappedFiles.size(), 2200 /*CaptureDiagnostics=*/true); 2201 if (ATU) { 2202 LoadSerializedDiagnostics(DiagnosticsFile, 2203 num_unsaved_files, unsaved_files, 2204 ATU->getFileManager(), 2205 ATU->getSourceManager(), 2206 ATU->getStoredDiagnostics()); 2207 } else if (CXXIdx->getDisplayDiagnostics()) { 2208 // We failed to load the ASTUnit, but we can still deserialize the 2209 // diagnostics and emit them. 2210 FileManager FileMgr; 2211 Diagnostic Diag; 2212 SourceManager SourceMgr(Diag); 2213 // FIXME: Faked LangOpts! 2214 LangOptions LangOpts; 2215 llvm::SmallVector<StoredDiagnostic, 4> Diags; 2216 LoadSerializedDiagnostics(DiagnosticsFile, 2217 num_unsaved_files, unsaved_files, 2218 FileMgr, SourceMgr, Diags); 2219 for (llvm::SmallVector<StoredDiagnostic, 4>::iterator D = Diags.begin(), 2220 DEnd = Diags.end(); 2221 D != DEnd; ++D) { 2222 CXStoredDiagnostic Diag(*D, LangOpts); 2223 CXString Msg = clang_formatDiagnostic(&Diag, 2224 clang_defaultDiagnosticDisplayOptions()); 2225 fprintf(stderr, "%s\n", clang_getCString(Msg)); 2226 clang_disposeString(Msg); 2227 } 2228 2229#ifdef LLVM_ON_WIN32 2230 // On Windows, force a flush, since there may be multiple copies of 2231 // stderr and stdout in the file system, all with different buffers 2232 // but writing to the same device. 2233 fflush(stderr); 2234#endif 2235 } 2236 2237 if (ATU) { 2238 // Make the translation unit responsible for destroying all temporary files. 2239 for (unsigned i = 0, e = TemporaryFiles.size(); i != e; ++i) 2240 ATU->addTemporaryFile(TemporaryFiles[i]); 2241 ATU->addTemporaryFile(llvm::sys::Path(ATU->getASTFileName())); 2242 } else { 2243 // Destroy all of the temporary files now; they can't be referenced any 2244 // longer. 2245 llvm::sys::Path(astTmpFile).eraseFromDisk(); 2246 for (unsigned i = 0, e = TemporaryFiles.size(); i != e; ++i) 2247 TemporaryFiles[i].eraseFromDisk(); 2248 } 2249 2250 PTUI->result = ATU; 2251} 2252CXTranslationUnit clang_parseTranslationUnit(CXIndex CIdx, 2253 const char *source_filename, 2254 const char * const *command_line_args, 2255 int num_command_line_args, 2256 struct CXUnsavedFile *unsaved_files, 2257 unsigned num_unsaved_files, 2258 unsigned options) { 2259 ParseTranslationUnitInfo PTUI = { CIdx, source_filename, command_line_args, 2260 num_command_line_args, unsaved_files, num_unsaved_files, 2261 options, 0 }; 2262 llvm::CrashRecoveryContext CRC; 2263 2264 if (!CRC.RunSafely(clang_parseTranslationUnit_Impl, &PTUI)) { 2265 fprintf(stderr, "libclang: crash detected during parsing: {\n"); 2266 fprintf(stderr, " 'source_filename' : '%s'\n", source_filename); 2267 fprintf(stderr, " 'command_line_args' : ["); 2268 for (int i = 0; i != num_command_line_args; ++i) { 2269 if (i) 2270 fprintf(stderr, ", "); 2271 fprintf(stderr, "'%s'", command_line_args[i]); 2272 } 2273 fprintf(stderr, "],\n"); 2274 fprintf(stderr, " 'unsaved_files' : ["); 2275 for (unsigned i = 0; i != num_unsaved_files; ++i) { 2276 if (i) 2277 fprintf(stderr, ", "); 2278 fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename, 2279 unsaved_files[i].Length); 2280 } 2281 fprintf(stderr, "],\n"); 2282 fprintf(stderr, " 'options' : %d,\n", options); 2283 fprintf(stderr, "}\n"); 2284 2285 return 0; 2286 } 2287 2288 return PTUI.result; 2289} 2290 2291unsigned clang_defaultSaveOptions(CXTranslationUnit TU) { 2292 return CXSaveTranslationUnit_None; 2293} 2294 2295int clang_saveTranslationUnit(CXTranslationUnit TU, const char *FileName, 2296 unsigned options) { 2297 if (!TU) 2298 return 1; 2299 2300 return static_cast<ASTUnit *>(TU)->Save(FileName); 2301} 2302 2303void clang_disposeTranslationUnit(CXTranslationUnit CTUnit) { 2304 if (CTUnit) { 2305 // If the translation unit has been marked as unsafe to free, just discard 2306 // it. 2307 if (static_cast<ASTUnit *>(CTUnit)->isUnsafeToFree()) 2308 return; 2309 2310 delete static_cast<ASTUnit *>(CTUnit); 2311 } 2312} 2313 2314unsigned clang_defaultReparseOptions(CXTranslationUnit TU) { 2315 return CXReparse_None; 2316} 2317 2318struct ReparseTranslationUnitInfo { 2319 CXTranslationUnit TU; 2320 unsigned num_unsaved_files; 2321 struct CXUnsavedFile *unsaved_files; 2322 unsigned options; 2323 int result; 2324}; 2325 2326static void clang_reparseTranslationUnit_Impl(void *UserData) { 2327 ReparseTranslationUnitInfo *RTUI = 2328 static_cast<ReparseTranslationUnitInfo*>(UserData); 2329 CXTranslationUnit TU = RTUI->TU; 2330 unsigned num_unsaved_files = RTUI->num_unsaved_files; 2331 struct CXUnsavedFile *unsaved_files = RTUI->unsaved_files; 2332 unsigned options = RTUI->options; 2333 (void) options; 2334 RTUI->result = 1; 2335 2336 if (!TU) 2337 return; 2338 2339 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 2340 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 2341 2342 llvm::SmallVector<ASTUnit::RemappedFile, 4> RemappedFiles; 2343 for (unsigned I = 0; I != num_unsaved_files; ++I) { 2344 llvm::StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length); 2345 const llvm::MemoryBuffer *Buffer 2346 = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename); 2347 RemappedFiles.push_back(std::make_pair(unsaved_files[I].Filename, 2348 Buffer)); 2349 } 2350 2351 if (!CXXUnit->Reparse(RemappedFiles.data(), RemappedFiles.size())) 2352 RTUI->result = 0; 2353} 2354 2355int clang_reparseTranslationUnit(CXTranslationUnit TU, 2356 unsigned num_unsaved_files, 2357 struct CXUnsavedFile *unsaved_files, 2358 unsigned options) { 2359 ReparseTranslationUnitInfo RTUI = { TU, num_unsaved_files, unsaved_files, 2360 options, 0 }; 2361 llvm::CrashRecoveryContext CRC; 2362 2363 if (!CRC.RunSafely(clang_reparseTranslationUnit_Impl, &RTUI)) { 2364 fprintf(stderr, "libclang: crash detected during reparsing\n"); 2365 static_cast<ASTUnit *>(TU)->setUnsafeToFree(true); 2366 return 1; 2367 } 2368 2369 return RTUI.result; 2370} 2371 2372 2373CXString clang_getTranslationUnitSpelling(CXTranslationUnit CTUnit) { 2374 if (!CTUnit) 2375 return createCXString(""); 2376 2377 ASTUnit *CXXUnit = static_cast<ASTUnit *>(CTUnit); 2378 return createCXString(CXXUnit->getOriginalSourceFileName(), true); 2379} 2380 2381CXCursor clang_getTranslationUnitCursor(CXTranslationUnit TU) { 2382 CXCursor Result = { CXCursor_TranslationUnit, { 0, 0, TU } }; 2383 return Result; 2384} 2385 2386} // end: extern "C" 2387 2388//===----------------------------------------------------------------------===// 2389// CXSourceLocation and CXSourceRange Operations. 2390//===----------------------------------------------------------------------===// 2391 2392extern "C" { 2393CXSourceLocation clang_getNullLocation() { 2394 CXSourceLocation Result = { { 0, 0 }, 0 }; 2395 return Result; 2396} 2397 2398unsigned clang_equalLocations(CXSourceLocation loc1, CXSourceLocation loc2) { 2399 return (loc1.ptr_data[0] == loc2.ptr_data[0] && 2400 loc1.ptr_data[1] == loc2.ptr_data[1] && 2401 loc1.int_data == loc2.int_data); 2402} 2403 2404CXSourceLocation clang_getLocation(CXTranslationUnit tu, 2405 CXFile file, 2406 unsigned line, 2407 unsigned column) { 2408 if (!tu || !file) 2409 return clang_getNullLocation(); 2410 2411 ASTUnit *CXXUnit = static_cast<ASTUnit *>(tu); 2412 SourceLocation SLoc 2413 = CXXUnit->getSourceManager().getLocation( 2414 static_cast<const FileEntry *>(file), 2415 line, column); 2416 2417 return cxloc::translateSourceLocation(CXXUnit->getASTContext(), SLoc); 2418} 2419 2420CXSourceRange clang_getNullRange() { 2421 CXSourceRange Result = { { 0, 0 }, 0, 0 }; 2422 return Result; 2423} 2424 2425CXSourceRange clang_getRange(CXSourceLocation begin, CXSourceLocation end) { 2426 if (begin.ptr_data[0] != end.ptr_data[0] || 2427 begin.ptr_data[1] != end.ptr_data[1]) 2428 return clang_getNullRange(); 2429 2430 CXSourceRange Result = { { begin.ptr_data[0], begin.ptr_data[1] }, 2431 begin.int_data, end.int_data }; 2432 return Result; 2433} 2434 2435void clang_getInstantiationLocation(CXSourceLocation location, 2436 CXFile *file, 2437 unsigned *line, 2438 unsigned *column, 2439 unsigned *offset) { 2440 SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data); 2441 2442 if (!location.ptr_data[0] || Loc.isInvalid()) { 2443 if (file) 2444 *file = 0; 2445 if (line) 2446 *line = 0; 2447 if (column) 2448 *column = 0; 2449 if (offset) 2450 *offset = 0; 2451 return; 2452 } 2453 2454 const SourceManager &SM = 2455 *static_cast<const SourceManager*>(location.ptr_data[0]); 2456 SourceLocation InstLoc = SM.getInstantiationLoc(Loc); 2457 2458 if (file) 2459 *file = (void *)SM.getFileEntryForID(SM.getFileID(InstLoc)); 2460 if (line) 2461 *line = SM.getInstantiationLineNumber(InstLoc); 2462 if (column) 2463 *column = SM.getInstantiationColumnNumber(InstLoc); 2464 if (offset) 2465 *offset = SM.getDecomposedLoc(InstLoc).second; 2466} 2467 2468CXSourceLocation clang_getRangeStart(CXSourceRange range) { 2469 CXSourceLocation Result = { { range.ptr_data[0], range.ptr_data[1] }, 2470 range.begin_int_data }; 2471 return Result; 2472} 2473 2474CXSourceLocation clang_getRangeEnd(CXSourceRange range) { 2475 CXSourceLocation Result = { { range.ptr_data[0], range.ptr_data[1] }, 2476 range.end_int_data }; 2477 return Result; 2478} 2479 2480} // end: extern "C" 2481 2482//===----------------------------------------------------------------------===// 2483// CXFile Operations. 2484//===----------------------------------------------------------------------===// 2485 2486extern "C" { 2487CXString clang_getFileName(CXFile SFile) { 2488 if (!SFile) 2489 return createCXString(NULL); 2490 2491 FileEntry *FEnt = static_cast<FileEntry *>(SFile); 2492 return createCXString(FEnt->getName()); 2493} 2494 2495time_t clang_getFileTime(CXFile SFile) { 2496 if (!SFile) 2497 return 0; 2498 2499 FileEntry *FEnt = static_cast<FileEntry *>(SFile); 2500 return FEnt->getModificationTime(); 2501} 2502 2503CXFile clang_getFile(CXTranslationUnit tu, const char *file_name) { 2504 if (!tu) 2505 return 0; 2506 2507 ASTUnit *CXXUnit = static_cast<ASTUnit *>(tu); 2508 2509 FileManager &FMgr = CXXUnit->getFileManager(); 2510 const FileEntry *File = FMgr.getFile(file_name, file_name+strlen(file_name)); 2511 return const_cast<FileEntry *>(File); 2512} 2513 2514} // end: extern "C" 2515 2516//===----------------------------------------------------------------------===// 2517// CXCursor Operations. 2518//===----------------------------------------------------------------------===// 2519 2520static Decl *getDeclFromExpr(Stmt *E) { 2521 if (CastExpr *CE = dyn_cast<CastExpr>(E)) 2522 return getDeclFromExpr(CE->getSubExpr()); 2523 2524 if (DeclRefExpr *RefExpr = dyn_cast<DeclRefExpr>(E)) 2525 return RefExpr->getDecl(); 2526 if (MemberExpr *ME = dyn_cast<MemberExpr>(E)) 2527 return ME->getMemberDecl(); 2528 if (ObjCIvarRefExpr *RE = dyn_cast<ObjCIvarRefExpr>(E)) 2529 return RE->getDecl(); 2530 if (ObjCPropertyRefExpr *PRE = dyn_cast<ObjCPropertyRefExpr>(E)) 2531 return PRE->getProperty(); 2532 2533 if (CallExpr *CE = dyn_cast<CallExpr>(E)) 2534 return getDeclFromExpr(CE->getCallee()); 2535 if (ObjCMessageExpr *OME = dyn_cast<ObjCMessageExpr>(E)) 2536 return OME->getMethodDecl(); 2537 2538 if (ObjCProtocolExpr *PE = dyn_cast<ObjCProtocolExpr>(E)) 2539 return PE->getProtocol(); 2540 2541 return 0; 2542} 2543 2544static SourceLocation getLocationFromExpr(Expr *E) { 2545 if (ObjCMessageExpr *Msg = dyn_cast<ObjCMessageExpr>(E)) 2546 return /*FIXME:*/Msg->getLeftLoc(); 2547 if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) 2548 return DRE->getLocation(); 2549 if (MemberExpr *Member = dyn_cast<MemberExpr>(E)) 2550 return Member->getMemberLoc(); 2551 if (ObjCIvarRefExpr *Ivar = dyn_cast<ObjCIvarRefExpr>(E)) 2552 return Ivar->getLocation(); 2553 return E->getLocStart(); 2554} 2555 2556extern "C" { 2557 2558unsigned clang_visitChildren(CXCursor parent, 2559 CXCursorVisitor visitor, 2560 CXClientData client_data) { 2561 ASTUnit *CXXUnit = getCursorASTUnit(parent); 2562 2563 CursorVisitor CursorVis(CXXUnit, visitor, client_data, 2564 CXXUnit->getMaxPCHLevel()); 2565 return CursorVis.VisitChildren(parent); 2566} 2567 2568static CXString getDeclSpelling(Decl *D) { 2569 NamedDecl *ND = dyn_cast_or_null<NamedDecl>(D); 2570 if (!ND) 2571 return createCXString(""); 2572 2573 if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(ND)) 2574 return createCXString(OMD->getSelector().getAsString()); 2575 2576 if (ObjCCategoryImplDecl *CIMP = dyn_cast<ObjCCategoryImplDecl>(ND)) 2577 // No, this isn't the same as the code below. getIdentifier() is non-virtual 2578 // and returns different names. NamedDecl returns the class name and 2579 // ObjCCategoryImplDecl returns the category name. 2580 return createCXString(CIMP->getIdentifier()->getNameStart()); 2581 2582 if (isa<UsingDirectiveDecl>(D)) 2583 return createCXString(""); 2584 2585 llvm::SmallString<1024> S; 2586 llvm::raw_svector_ostream os(S); 2587 ND->printName(os); 2588 2589 return createCXString(os.str()); 2590} 2591 2592CXString clang_getCursorSpelling(CXCursor C) { 2593 if (clang_isTranslationUnit(C.kind)) 2594 return clang_getTranslationUnitSpelling(C.data[2]); 2595 2596 if (clang_isReference(C.kind)) { 2597 switch (C.kind) { 2598 case CXCursor_ObjCSuperClassRef: { 2599 ObjCInterfaceDecl *Super = getCursorObjCSuperClassRef(C).first; 2600 return createCXString(Super->getIdentifier()->getNameStart()); 2601 } 2602 case CXCursor_ObjCClassRef: { 2603 ObjCInterfaceDecl *Class = getCursorObjCClassRef(C).first; 2604 return createCXString(Class->getIdentifier()->getNameStart()); 2605 } 2606 case CXCursor_ObjCProtocolRef: { 2607 ObjCProtocolDecl *OID = getCursorObjCProtocolRef(C).first; 2608 assert(OID && "getCursorSpelling(): Missing protocol decl"); 2609 return createCXString(OID->getIdentifier()->getNameStart()); 2610 } 2611 case CXCursor_CXXBaseSpecifier: { 2612 CXXBaseSpecifier *B = getCursorCXXBaseSpecifier(C); 2613 return createCXString(B->getType().getAsString()); 2614 } 2615 case CXCursor_TypeRef: { 2616 TypeDecl *Type = getCursorTypeRef(C).first; 2617 assert(Type && "Missing type decl"); 2618 2619 return createCXString(getCursorContext(C).getTypeDeclType(Type). 2620 getAsString()); 2621 } 2622 case CXCursor_TemplateRef: { 2623 TemplateDecl *Template = getCursorTemplateRef(C).first; 2624 assert(Template && "Missing template decl"); 2625 2626 return createCXString(Template->getNameAsString()); 2627 } 2628 2629 case CXCursor_NamespaceRef: { 2630 NamedDecl *NS = getCursorNamespaceRef(C).first; 2631 assert(NS && "Missing namespace decl"); 2632 2633 return createCXString(NS->getNameAsString()); 2634 } 2635 2636 case CXCursor_MemberRef: { 2637 FieldDecl *Field = getCursorMemberRef(C).first; 2638 assert(Field && "Missing member decl"); 2639 2640 return createCXString(Field->getNameAsString()); 2641 } 2642 2643 case CXCursor_LabelRef: { 2644 LabelStmt *Label = getCursorLabelRef(C).first; 2645 assert(Label && "Missing label"); 2646 2647 return createCXString(Label->getID()->getName()); 2648 } 2649 2650 case CXCursor_OverloadedDeclRef: { 2651 OverloadedDeclRefStorage Storage = getCursorOverloadedDeclRef(C).first; 2652 if (Decl *D = Storage.dyn_cast<Decl *>()) { 2653 if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) 2654 return createCXString(ND->getNameAsString()); 2655 return createCXString(""); 2656 } 2657 if (OverloadExpr *E = Storage.dyn_cast<OverloadExpr *>()) 2658 return createCXString(E->getName().getAsString()); 2659 OverloadedTemplateStorage *Ovl 2660 = Storage.get<OverloadedTemplateStorage*>(); 2661 if (Ovl->size() == 0) 2662 return createCXString(""); 2663 return createCXString((*Ovl->begin())->getNameAsString()); 2664 } 2665 2666 default: 2667 return createCXString("<not implemented>"); 2668 } 2669 } 2670 2671 if (clang_isExpression(C.kind)) { 2672 Decl *D = getDeclFromExpr(getCursorExpr(C)); 2673 if (D) 2674 return getDeclSpelling(D); 2675 return createCXString(""); 2676 } 2677 2678 if (clang_isStatement(C.kind)) { 2679 Stmt *S = getCursorStmt(C); 2680 if (LabelStmt *Label = dyn_cast_or_null<LabelStmt>(S)) 2681 return createCXString(Label->getID()->getName()); 2682 2683 return createCXString(""); 2684 } 2685 2686 if (C.kind == CXCursor_MacroInstantiation) 2687 return createCXString(getCursorMacroInstantiation(C)->getName() 2688 ->getNameStart()); 2689 2690 if (C.kind == CXCursor_MacroDefinition) 2691 return createCXString(getCursorMacroDefinition(C)->getName() 2692 ->getNameStart()); 2693 2694 if (clang_isDeclaration(C.kind)) 2695 return getDeclSpelling(getCursorDecl(C)); 2696 2697 return createCXString(""); 2698} 2699 2700CXString clang_getCursorKindSpelling(enum CXCursorKind Kind) { 2701 switch (Kind) { 2702 case CXCursor_FunctionDecl: 2703 return createCXString("FunctionDecl"); 2704 case CXCursor_TypedefDecl: 2705 return createCXString("TypedefDecl"); 2706 case CXCursor_EnumDecl: 2707 return createCXString("EnumDecl"); 2708 case CXCursor_EnumConstantDecl: 2709 return createCXString("EnumConstantDecl"); 2710 case CXCursor_StructDecl: 2711 return createCXString("StructDecl"); 2712 case CXCursor_UnionDecl: 2713 return createCXString("UnionDecl"); 2714 case CXCursor_ClassDecl: 2715 return createCXString("ClassDecl"); 2716 case CXCursor_FieldDecl: 2717 return createCXString("FieldDecl"); 2718 case CXCursor_VarDecl: 2719 return createCXString("VarDecl"); 2720 case CXCursor_ParmDecl: 2721 return createCXString("ParmDecl"); 2722 case CXCursor_ObjCInterfaceDecl: 2723 return createCXString("ObjCInterfaceDecl"); 2724 case CXCursor_ObjCCategoryDecl: 2725 return createCXString("ObjCCategoryDecl"); 2726 case CXCursor_ObjCProtocolDecl: 2727 return createCXString("ObjCProtocolDecl"); 2728 case CXCursor_ObjCPropertyDecl: 2729 return createCXString("ObjCPropertyDecl"); 2730 case CXCursor_ObjCIvarDecl: 2731 return createCXString("ObjCIvarDecl"); 2732 case CXCursor_ObjCInstanceMethodDecl: 2733 return createCXString("ObjCInstanceMethodDecl"); 2734 case CXCursor_ObjCClassMethodDecl: 2735 return createCXString("ObjCClassMethodDecl"); 2736 case CXCursor_ObjCImplementationDecl: 2737 return createCXString("ObjCImplementationDecl"); 2738 case CXCursor_ObjCCategoryImplDecl: 2739 return createCXString("ObjCCategoryImplDecl"); 2740 case CXCursor_CXXMethod: 2741 return createCXString("CXXMethod"); 2742 case CXCursor_UnexposedDecl: 2743 return createCXString("UnexposedDecl"); 2744 case CXCursor_ObjCSuperClassRef: 2745 return createCXString("ObjCSuperClassRef"); 2746 case CXCursor_ObjCProtocolRef: 2747 return createCXString("ObjCProtocolRef"); 2748 case CXCursor_ObjCClassRef: 2749 return createCXString("ObjCClassRef"); 2750 case CXCursor_TypeRef: 2751 return createCXString("TypeRef"); 2752 case CXCursor_TemplateRef: 2753 return createCXString("TemplateRef"); 2754 case CXCursor_NamespaceRef: 2755 return createCXString("NamespaceRef"); 2756 case CXCursor_MemberRef: 2757 return createCXString("MemberRef"); 2758 case CXCursor_LabelRef: 2759 return createCXString("LabelRef"); 2760 case CXCursor_OverloadedDeclRef: 2761 return createCXString("OverloadedDeclRef"); 2762 case CXCursor_UnexposedExpr: 2763 return createCXString("UnexposedExpr"); 2764 case CXCursor_BlockExpr: 2765 return createCXString("BlockExpr"); 2766 case CXCursor_DeclRefExpr: 2767 return createCXString("DeclRefExpr"); 2768 case CXCursor_MemberRefExpr: 2769 return createCXString("MemberRefExpr"); 2770 case CXCursor_CallExpr: 2771 return createCXString("CallExpr"); 2772 case CXCursor_ObjCMessageExpr: 2773 return createCXString("ObjCMessageExpr"); 2774 case CXCursor_UnexposedStmt: 2775 return createCXString("UnexposedStmt"); 2776 case CXCursor_LabelStmt: 2777 return createCXString("LabelStmt"); 2778 case CXCursor_InvalidFile: 2779 return createCXString("InvalidFile"); 2780 case CXCursor_InvalidCode: 2781 return createCXString("InvalidCode"); 2782 case CXCursor_NoDeclFound: 2783 return createCXString("NoDeclFound"); 2784 case CXCursor_NotImplemented: 2785 return createCXString("NotImplemented"); 2786 case CXCursor_TranslationUnit: 2787 return createCXString("TranslationUnit"); 2788 case CXCursor_UnexposedAttr: 2789 return createCXString("UnexposedAttr"); 2790 case CXCursor_IBActionAttr: 2791 return createCXString("attribute(ibaction)"); 2792 case CXCursor_IBOutletAttr: 2793 return createCXString("attribute(iboutlet)"); 2794 case CXCursor_IBOutletCollectionAttr: 2795 return createCXString("attribute(iboutletcollection)"); 2796 case CXCursor_PreprocessingDirective: 2797 return createCXString("preprocessing directive"); 2798 case CXCursor_MacroDefinition: 2799 return createCXString("macro definition"); 2800 case CXCursor_MacroInstantiation: 2801 return createCXString("macro instantiation"); 2802 case CXCursor_Namespace: 2803 return createCXString("Namespace"); 2804 case CXCursor_LinkageSpec: 2805 return createCXString("LinkageSpec"); 2806 case CXCursor_CXXBaseSpecifier: 2807 return createCXString("C++ base class specifier"); 2808 case CXCursor_Constructor: 2809 return createCXString("CXXConstructor"); 2810 case CXCursor_Destructor: 2811 return createCXString("CXXDestructor"); 2812 case CXCursor_ConversionFunction: 2813 return createCXString("CXXConversion"); 2814 case CXCursor_TemplateTypeParameter: 2815 return createCXString("TemplateTypeParameter"); 2816 case CXCursor_NonTypeTemplateParameter: 2817 return createCXString("NonTypeTemplateParameter"); 2818 case CXCursor_TemplateTemplateParameter: 2819 return createCXString("TemplateTemplateParameter"); 2820 case CXCursor_FunctionTemplate: 2821 return createCXString("FunctionTemplate"); 2822 case CXCursor_ClassTemplate: 2823 return createCXString("ClassTemplate"); 2824 case CXCursor_ClassTemplatePartialSpecialization: 2825 return createCXString("ClassTemplatePartialSpecialization"); 2826 case CXCursor_NamespaceAlias: 2827 return createCXString("NamespaceAlias"); 2828 case CXCursor_UsingDirective: 2829 return createCXString("UsingDirective"); 2830 case CXCursor_UsingDeclaration: 2831 return createCXString("UsingDeclaration"); 2832 } 2833 2834 llvm_unreachable("Unhandled CXCursorKind"); 2835 return createCXString(NULL); 2836} 2837 2838enum CXChildVisitResult GetCursorVisitor(CXCursor cursor, 2839 CXCursor parent, 2840 CXClientData client_data) { 2841 CXCursor *BestCursor = static_cast<CXCursor *>(client_data); 2842 *BestCursor = cursor; 2843 return CXChildVisit_Recurse; 2844} 2845 2846CXCursor clang_getCursor(CXTranslationUnit TU, CXSourceLocation Loc) { 2847 if (!TU) 2848 return clang_getNullCursor(); 2849 2850 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 2851 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 2852 2853 // Translate the given source location to make it point at the beginning of 2854 // the token under the cursor. 2855 SourceLocation SLoc = cxloc::translateSourceLocation(Loc); 2856 2857 // Guard against an invalid SourceLocation, or we may assert in one 2858 // of the following calls. 2859 if (SLoc.isInvalid()) 2860 return clang_getNullCursor(); 2861 2862 SLoc = Lexer::GetBeginningOfToken(SLoc, CXXUnit->getSourceManager(), 2863 CXXUnit->getASTContext().getLangOptions()); 2864 2865 CXCursor Result = MakeCXCursorInvalid(CXCursor_NoDeclFound); 2866 if (SLoc.isValid()) { 2867 // FIXME: Would be great to have a "hint" cursor, then walk from that 2868 // hint cursor upward until we find a cursor whose source range encloses 2869 // the region of interest, rather than starting from the translation unit. 2870 CXCursor Parent = clang_getTranslationUnitCursor(CXXUnit); 2871 CursorVisitor CursorVis(CXXUnit, GetCursorVisitor, &Result, 2872 Decl::MaxPCHLevel, SourceLocation(SLoc)); 2873 CursorVis.VisitChildren(Parent); 2874 } 2875 return Result; 2876} 2877 2878CXCursor clang_getNullCursor(void) { 2879 return MakeCXCursorInvalid(CXCursor_InvalidFile); 2880} 2881 2882unsigned clang_equalCursors(CXCursor X, CXCursor Y) { 2883 return X == Y; 2884} 2885 2886unsigned clang_isInvalid(enum CXCursorKind K) { 2887 return K >= CXCursor_FirstInvalid && K <= CXCursor_LastInvalid; 2888} 2889 2890unsigned clang_isDeclaration(enum CXCursorKind K) { 2891 return K >= CXCursor_FirstDecl && K <= CXCursor_LastDecl; 2892} 2893 2894unsigned clang_isReference(enum CXCursorKind K) { 2895 return K >= CXCursor_FirstRef && K <= CXCursor_LastRef; 2896} 2897 2898unsigned clang_isExpression(enum CXCursorKind K) { 2899 return K >= CXCursor_FirstExpr && K <= CXCursor_LastExpr; 2900} 2901 2902unsigned clang_isStatement(enum CXCursorKind K) { 2903 return K >= CXCursor_FirstStmt && K <= CXCursor_LastStmt; 2904} 2905 2906unsigned clang_isTranslationUnit(enum CXCursorKind K) { 2907 return K == CXCursor_TranslationUnit; 2908} 2909 2910unsigned clang_isPreprocessing(enum CXCursorKind K) { 2911 return K >= CXCursor_FirstPreprocessing && K <= CXCursor_LastPreprocessing; 2912} 2913 2914unsigned clang_isUnexposed(enum CXCursorKind K) { 2915 switch (K) { 2916 case CXCursor_UnexposedDecl: 2917 case CXCursor_UnexposedExpr: 2918 case CXCursor_UnexposedStmt: 2919 case CXCursor_UnexposedAttr: 2920 return true; 2921 default: 2922 return false; 2923 } 2924} 2925 2926CXCursorKind clang_getCursorKind(CXCursor C) { 2927 return C.kind; 2928} 2929 2930CXSourceLocation clang_getCursorLocation(CXCursor C) { 2931 if (clang_isReference(C.kind)) { 2932 switch (C.kind) { 2933 case CXCursor_ObjCSuperClassRef: { 2934 std::pair<ObjCInterfaceDecl *, SourceLocation> P 2935 = getCursorObjCSuperClassRef(C); 2936 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 2937 } 2938 2939 case CXCursor_ObjCProtocolRef: { 2940 std::pair<ObjCProtocolDecl *, SourceLocation> P 2941 = getCursorObjCProtocolRef(C); 2942 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 2943 } 2944 2945 case CXCursor_ObjCClassRef: { 2946 std::pair<ObjCInterfaceDecl *, SourceLocation> P 2947 = getCursorObjCClassRef(C); 2948 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 2949 } 2950 2951 case CXCursor_TypeRef: { 2952 std::pair<TypeDecl *, SourceLocation> P = getCursorTypeRef(C); 2953 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 2954 } 2955 2956 case CXCursor_TemplateRef: { 2957 std::pair<TemplateDecl *, SourceLocation> P = getCursorTemplateRef(C); 2958 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 2959 } 2960 2961 case CXCursor_NamespaceRef: { 2962 std::pair<NamedDecl *, SourceLocation> P = getCursorNamespaceRef(C); 2963 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 2964 } 2965 2966 case CXCursor_MemberRef: { 2967 std::pair<FieldDecl *, SourceLocation> P = getCursorMemberRef(C); 2968 return cxloc::translateSourceLocation(P.first->getASTContext(), P.second); 2969 } 2970 2971 case CXCursor_CXXBaseSpecifier: { 2972 // FIXME: Figure out what location to return for a CXXBaseSpecifier. 2973 return clang_getNullLocation(); 2974 } 2975 2976 case CXCursor_LabelRef: { 2977 std::pair<LabelStmt *, SourceLocation> P = getCursorLabelRef(C); 2978 return cxloc::translateSourceLocation(getCursorContext(C), P.second); 2979 } 2980 2981 case CXCursor_OverloadedDeclRef: 2982 return cxloc::translateSourceLocation(getCursorContext(C), 2983 getCursorOverloadedDeclRef(C).second); 2984 2985 default: 2986 // FIXME: Need a way to enumerate all non-reference cases. 2987 llvm_unreachable("Missed a reference kind"); 2988 } 2989 } 2990 2991 if (clang_isExpression(C.kind)) 2992 return cxloc::translateSourceLocation(getCursorContext(C), 2993 getLocationFromExpr(getCursorExpr(C))); 2994 2995 if (clang_isStatement(C.kind)) 2996 return cxloc::translateSourceLocation(getCursorContext(C), 2997 getCursorStmt(C)->getLocStart()); 2998 2999 if (C.kind == CXCursor_PreprocessingDirective) { 3000 SourceLocation L = cxcursor::getCursorPreprocessingDirective(C).getBegin(); 3001 return cxloc::translateSourceLocation(getCursorContext(C), L); 3002 } 3003 3004 if (C.kind == CXCursor_MacroInstantiation) { 3005 SourceLocation L 3006 = cxcursor::getCursorMacroInstantiation(C)->getSourceRange().getBegin(); 3007 return cxloc::translateSourceLocation(getCursorContext(C), L); 3008 } 3009 3010 if (C.kind == CXCursor_MacroDefinition) { 3011 SourceLocation L = cxcursor::getCursorMacroDefinition(C)->getLocation(); 3012 return cxloc::translateSourceLocation(getCursorContext(C), L); 3013 } 3014 3015 if (C.kind < CXCursor_FirstDecl || C.kind > CXCursor_LastDecl) 3016 return clang_getNullLocation(); 3017 3018 Decl *D = getCursorDecl(C); 3019 SourceLocation Loc = D->getLocation(); 3020 if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(D)) 3021 Loc = Class->getClassLoc(); 3022 return cxloc::translateSourceLocation(getCursorContext(C), Loc); 3023} 3024 3025} // end extern "C" 3026 3027static SourceRange getRawCursorExtent(CXCursor C) { 3028 if (clang_isReference(C.kind)) { 3029 switch (C.kind) { 3030 case CXCursor_ObjCSuperClassRef: 3031 return getCursorObjCSuperClassRef(C).second; 3032 3033 case CXCursor_ObjCProtocolRef: 3034 return getCursorObjCProtocolRef(C).second; 3035 3036 case CXCursor_ObjCClassRef: 3037 return getCursorObjCClassRef(C).second; 3038 3039 case CXCursor_TypeRef: 3040 return getCursorTypeRef(C).second; 3041 3042 case CXCursor_TemplateRef: 3043 return getCursorTemplateRef(C).second; 3044 3045 case CXCursor_NamespaceRef: 3046 return getCursorNamespaceRef(C).second; 3047 3048 case CXCursor_MemberRef: 3049 return getCursorMemberRef(C).second; 3050 3051 case CXCursor_CXXBaseSpecifier: 3052 // FIXME: Figure out what source range to use for a CXBaseSpecifier. 3053 return SourceRange(); 3054 3055 case CXCursor_LabelRef: 3056 return getCursorLabelRef(C).second; 3057 3058 case CXCursor_OverloadedDeclRef: 3059 return getCursorOverloadedDeclRef(C).second; 3060 3061 default: 3062 // FIXME: Need a way to enumerate all non-reference cases. 3063 llvm_unreachable("Missed a reference kind"); 3064 } 3065 } 3066 3067 if (clang_isExpression(C.kind)) 3068 return getCursorExpr(C)->getSourceRange(); 3069 3070 if (clang_isStatement(C.kind)) 3071 return getCursorStmt(C)->getSourceRange(); 3072 3073 if (C.kind == CXCursor_PreprocessingDirective) 3074 return cxcursor::getCursorPreprocessingDirective(C); 3075 3076 if (C.kind == CXCursor_MacroInstantiation) 3077 return cxcursor::getCursorMacroInstantiation(C)->getSourceRange(); 3078 3079 if (C.kind == CXCursor_MacroDefinition) 3080 return cxcursor::getCursorMacroDefinition(C)->getSourceRange(); 3081 3082 if (C.kind >= CXCursor_FirstDecl && C.kind <= CXCursor_LastDecl) 3083 return getCursorDecl(C)->getSourceRange(); 3084 3085 return SourceRange(); 3086} 3087 3088extern "C" { 3089 3090CXSourceRange clang_getCursorExtent(CXCursor C) { 3091 SourceRange R = getRawCursorExtent(C); 3092 if (R.isInvalid()) 3093 return clang_getNullRange(); 3094 3095 return cxloc::translateSourceRange(getCursorContext(C), R); 3096} 3097 3098CXCursor clang_getCursorReferenced(CXCursor C) { 3099 if (clang_isInvalid(C.kind)) 3100 return clang_getNullCursor(); 3101 3102 ASTUnit *CXXUnit = getCursorASTUnit(C); 3103 if (clang_isDeclaration(C.kind)) { 3104 Decl *D = getCursorDecl(C); 3105 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) 3106 return MakeCursorOverloadedDeclRef(Using, D->getLocation(), CXXUnit); 3107 if (ObjCClassDecl *Classes = dyn_cast<ObjCClassDecl>(D)) 3108 return MakeCursorOverloadedDeclRef(Classes, D->getLocation(), CXXUnit); 3109 if (ObjCForwardProtocolDecl *Protocols 3110 = dyn_cast<ObjCForwardProtocolDecl>(D)) 3111 return MakeCursorOverloadedDeclRef(Protocols, D->getLocation(), CXXUnit); 3112 3113 return C; 3114 } 3115 3116 if (clang_isExpression(C.kind)) { 3117 Expr *E = getCursorExpr(C); 3118 Decl *D = getDeclFromExpr(E); 3119 if (D) 3120 return MakeCXCursor(D, CXXUnit); 3121 3122 if (OverloadExpr *Ovl = dyn_cast_or_null<OverloadExpr>(E)) 3123 return MakeCursorOverloadedDeclRef(Ovl, CXXUnit); 3124 3125 return clang_getNullCursor(); 3126 } 3127 3128 if (clang_isStatement(C.kind)) { 3129 Stmt *S = getCursorStmt(C); 3130 if (GotoStmt *Goto = dyn_cast_or_null<GotoStmt>(S)) 3131 return MakeCXCursor(Goto->getLabel(), getCursorDecl(C), 3132 getCursorASTUnit(C)); 3133 3134 return clang_getNullCursor(); 3135 } 3136 3137 if (C.kind == CXCursor_MacroInstantiation) { 3138 if (MacroDefinition *Def = getCursorMacroInstantiation(C)->getDefinition()) 3139 return MakeMacroDefinitionCursor(Def, CXXUnit); 3140 } 3141 3142 if (!clang_isReference(C.kind)) 3143 return clang_getNullCursor(); 3144 3145 switch (C.kind) { 3146 case CXCursor_ObjCSuperClassRef: 3147 return MakeCXCursor(getCursorObjCSuperClassRef(C).first, CXXUnit); 3148 3149 case CXCursor_ObjCProtocolRef: { 3150 return MakeCXCursor(getCursorObjCProtocolRef(C).first, CXXUnit); 3151 3152 case CXCursor_ObjCClassRef: 3153 return MakeCXCursor(getCursorObjCClassRef(C).first, CXXUnit); 3154 3155 case CXCursor_TypeRef: 3156 return MakeCXCursor(getCursorTypeRef(C).first, CXXUnit); 3157 3158 case CXCursor_TemplateRef: 3159 return MakeCXCursor(getCursorTemplateRef(C).first, CXXUnit); 3160 3161 case CXCursor_NamespaceRef: 3162 return MakeCXCursor(getCursorNamespaceRef(C).first, CXXUnit); 3163 3164 case CXCursor_MemberRef: 3165 return MakeCXCursor(getCursorMemberRef(C).first, CXXUnit); 3166 3167 case CXCursor_CXXBaseSpecifier: { 3168 CXXBaseSpecifier *B = cxcursor::getCursorCXXBaseSpecifier(C); 3169 return clang_getTypeDeclaration(cxtype::MakeCXType(B->getType(), 3170 CXXUnit)); 3171 } 3172 3173 case CXCursor_LabelRef: 3174 // FIXME: We end up faking the "parent" declaration here because we 3175 // don't want to make CXCursor larger. 3176 return MakeCXCursor(getCursorLabelRef(C).first, 3177 CXXUnit->getASTContext().getTranslationUnitDecl(), 3178 CXXUnit); 3179 3180 case CXCursor_OverloadedDeclRef: 3181 return C; 3182 3183 default: 3184 // We would prefer to enumerate all non-reference cursor kinds here. 3185 llvm_unreachable("Unhandled reference cursor kind"); 3186 break; 3187 } 3188 } 3189 3190 return clang_getNullCursor(); 3191} 3192 3193CXCursor clang_getCursorDefinition(CXCursor C) { 3194 if (clang_isInvalid(C.kind)) 3195 return clang_getNullCursor(); 3196 3197 ASTUnit *CXXUnit = getCursorASTUnit(C); 3198 3199 bool WasReference = false; 3200 if (clang_isReference(C.kind) || clang_isExpression(C.kind)) { 3201 C = clang_getCursorReferenced(C); 3202 WasReference = true; 3203 } 3204 3205 if (C.kind == CXCursor_MacroInstantiation) 3206 return clang_getCursorReferenced(C); 3207 3208 if (!clang_isDeclaration(C.kind)) 3209 return clang_getNullCursor(); 3210 3211 Decl *D = getCursorDecl(C); 3212 if (!D) 3213 return clang_getNullCursor(); 3214 3215 switch (D->getKind()) { 3216 // Declaration kinds that don't really separate the notions of 3217 // declaration and definition. 3218 case Decl::Namespace: 3219 case Decl::Typedef: 3220 case Decl::TemplateTypeParm: 3221 case Decl::EnumConstant: 3222 case Decl::Field: 3223 case Decl::ObjCIvar: 3224 case Decl::ObjCAtDefsField: 3225 case Decl::ImplicitParam: 3226 case Decl::ParmVar: 3227 case Decl::NonTypeTemplateParm: 3228 case Decl::TemplateTemplateParm: 3229 case Decl::ObjCCategoryImpl: 3230 case Decl::ObjCImplementation: 3231 case Decl::AccessSpec: 3232 case Decl::LinkageSpec: 3233 case Decl::ObjCPropertyImpl: 3234 case Decl::FileScopeAsm: 3235 case Decl::StaticAssert: 3236 case Decl::Block: 3237 return C; 3238 3239 // Declaration kinds that don't make any sense here, but are 3240 // nonetheless harmless. 3241 case Decl::TranslationUnit: 3242 break; 3243 3244 // Declaration kinds for which the definition is not resolvable. 3245 case Decl::UnresolvedUsingTypename: 3246 case Decl::UnresolvedUsingValue: 3247 break; 3248 3249 case Decl::UsingDirective: 3250 return MakeCXCursor(cast<UsingDirectiveDecl>(D)->getNominatedNamespace(), 3251 CXXUnit); 3252 3253 case Decl::NamespaceAlias: 3254 return MakeCXCursor(cast<NamespaceAliasDecl>(D)->getNamespace(), CXXUnit); 3255 3256 case Decl::Enum: 3257 case Decl::Record: 3258 case Decl::CXXRecord: 3259 case Decl::ClassTemplateSpecialization: 3260 case Decl::ClassTemplatePartialSpecialization: 3261 if (TagDecl *Def = cast<TagDecl>(D)->getDefinition()) 3262 return MakeCXCursor(Def, CXXUnit); 3263 return clang_getNullCursor(); 3264 3265 case Decl::Function: 3266 case Decl::CXXMethod: 3267 case Decl::CXXConstructor: 3268 case Decl::CXXDestructor: 3269 case Decl::CXXConversion: { 3270 const FunctionDecl *Def = 0; 3271 if (cast<FunctionDecl>(D)->getBody(Def)) 3272 return MakeCXCursor(const_cast<FunctionDecl *>(Def), CXXUnit); 3273 return clang_getNullCursor(); 3274 } 3275 3276 case Decl::Var: { 3277 // Ask the variable if it has a definition. 3278 if (VarDecl *Def = cast<VarDecl>(D)->getDefinition()) 3279 return MakeCXCursor(Def, CXXUnit); 3280 return clang_getNullCursor(); 3281 } 3282 3283 case Decl::FunctionTemplate: { 3284 const FunctionDecl *Def = 0; 3285 if (cast<FunctionTemplateDecl>(D)->getTemplatedDecl()->getBody(Def)) 3286 return MakeCXCursor(Def->getDescribedFunctionTemplate(), CXXUnit); 3287 return clang_getNullCursor(); 3288 } 3289 3290 case Decl::ClassTemplate: { 3291 if (RecordDecl *Def = cast<ClassTemplateDecl>(D)->getTemplatedDecl() 3292 ->getDefinition()) 3293 return MakeCXCursor(cast<CXXRecordDecl>(Def)->getDescribedClassTemplate(), 3294 CXXUnit); 3295 return clang_getNullCursor(); 3296 } 3297 3298 case Decl::Using: 3299 return MakeCursorOverloadedDeclRef(cast<UsingDecl>(D), 3300 D->getLocation(), CXXUnit); 3301 3302 case Decl::UsingShadow: 3303 return clang_getCursorDefinition( 3304 MakeCXCursor(cast<UsingShadowDecl>(D)->getTargetDecl(), 3305 CXXUnit)); 3306 3307 case Decl::ObjCMethod: { 3308 ObjCMethodDecl *Method = cast<ObjCMethodDecl>(D); 3309 if (Method->isThisDeclarationADefinition()) 3310 return C; 3311 3312 // Dig out the method definition in the associated 3313 // @implementation, if we have it. 3314 // FIXME: The ASTs should make finding the definition easier. 3315 if (ObjCInterfaceDecl *Class 3316 = dyn_cast<ObjCInterfaceDecl>(Method->getDeclContext())) 3317 if (ObjCImplementationDecl *ClassImpl = Class->getImplementation()) 3318 if (ObjCMethodDecl *Def = ClassImpl->getMethod(Method->getSelector(), 3319 Method->isInstanceMethod())) 3320 if (Def->isThisDeclarationADefinition()) 3321 return MakeCXCursor(Def, CXXUnit); 3322 3323 return clang_getNullCursor(); 3324 } 3325 3326 case Decl::ObjCCategory: 3327 if (ObjCCategoryImplDecl *Impl 3328 = cast<ObjCCategoryDecl>(D)->getImplementation()) 3329 return MakeCXCursor(Impl, CXXUnit); 3330 return clang_getNullCursor(); 3331 3332 case Decl::ObjCProtocol: 3333 if (!cast<ObjCProtocolDecl>(D)->isForwardDecl()) 3334 return C; 3335 return clang_getNullCursor(); 3336 3337 case Decl::ObjCInterface: 3338 // There are two notions of a "definition" for an Objective-C 3339 // class: the interface and its implementation. When we resolved a 3340 // reference to an Objective-C class, produce the @interface as 3341 // the definition; when we were provided with the interface, 3342 // produce the @implementation as the definition. 3343 if (WasReference) { 3344 if (!cast<ObjCInterfaceDecl>(D)->isForwardDecl()) 3345 return C; 3346 } else if (ObjCImplementationDecl *Impl 3347 = cast<ObjCInterfaceDecl>(D)->getImplementation()) 3348 return MakeCXCursor(Impl, CXXUnit); 3349 return clang_getNullCursor(); 3350 3351 case Decl::ObjCProperty: 3352 // FIXME: We don't really know where to find the 3353 // ObjCPropertyImplDecls that implement this property. 3354 return clang_getNullCursor(); 3355 3356 case Decl::ObjCCompatibleAlias: 3357 if (ObjCInterfaceDecl *Class 3358 = cast<ObjCCompatibleAliasDecl>(D)->getClassInterface()) 3359 if (!Class->isForwardDecl()) 3360 return MakeCXCursor(Class, CXXUnit); 3361 3362 return clang_getNullCursor(); 3363 3364 case Decl::ObjCForwardProtocol: 3365 return MakeCursorOverloadedDeclRef(cast<ObjCForwardProtocolDecl>(D), 3366 D->getLocation(), CXXUnit); 3367 3368 case Decl::ObjCClass: 3369 return MakeCursorOverloadedDeclRef(cast<ObjCClassDecl>(D), D->getLocation(), 3370 CXXUnit); 3371 3372 case Decl::Friend: 3373 if (NamedDecl *Friend = cast<FriendDecl>(D)->getFriendDecl()) 3374 return clang_getCursorDefinition(MakeCXCursor(Friend, CXXUnit)); 3375 return clang_getNullCursor(); 3376 3377 case Decl::FriendTemplate: 3378 if (NamedDecl *Friend = cast<FriendTemplateDecl>(D)->getFriendDecl()) 3379 return clang_getCursorDefinition(MakeCXCursor(Friend, CXXUnit)); 3380 return clang_getNullCursor(); 3381 } 3382 3383 return clang_getNullCursor(); 3384} 3385 3386unsigned clang_isCursorDefinition(CXCursor C) { 3387 if (!clang_isDeclaration(C.kind)) 3388 return 0; 3389 3390 return clang_getCursorDefinition(C) == C; 3391} 3392 3393unsigned clang_getNumOverloadedDecls(CXCursor C) { 3394 if (C.kind != CXCursor_OverloadedDeclRef) 3395 return 0; 3396 3397 OverloadedDeclRefStorage Storage = getCursorOverloadedDeclRef(C).first; 3398 if (OverloadExpr *E = Storage.dyn_cast<OverloadExpr *>()) 3399 return E->getNumDecls(); 3400 3401 if (OverloadedTemplateStorage *S 3402 = Storage.dyn_cast<OverloadedTemplateStorage*>()) 3403 return S->size(); 3404 3405 Decl *D = Storage.get<Decl*>(); 3406 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) 3407 return Using->getNumShadowDecls(); 3408 if (ObjCClassDecl *Classes = dyn_cast<ObjCClassDecl>(D)) 3409 return Classes->size(); 3410 if (ObjCForwardProtocolDecl *Protocols =dyn_cast<ObjCForwardProtocolDecl>(D)) 3411 return Protocols->protocol_size(); 3412 3413 return 0; 3414} 3415 3416CXCursor clang_getOverloadedDecl(CXCursor cursor, unsigned index) { 3417 if (cursor.kind != CXCursor_OverloadedDeclRef) 3418 return clang_getNullCursor(); 3419 3420 if (index >= clang_getNumOverloadedDecls(cursor)) 3421 return clang_getNullCursor(); 3422 3423 ASTUnit *Unit = getCursorASTUnit(cursor); 3424 OverloadedDeclRefStorage Storage = getCursorOverloadedDeclRef(cursor).first; 3425 if (OverloadExpr *E = Storage.dyn_cast<OverloadExpr *>()) 3426 return MakeCXCursor(E->decls_begin()[index], Unit); 3427 3428 if (OverloadedTemplateStorage *S 3429 = Storage.dyn_cast<OverloadedTemplateStorage*>()) 3430 return MakeCXCursor(S->begin()[index], Unit); 3431 3432 Decl *D = Storage.get<Decl*>(); 3433 if (UsingDecl *Using = dyn_cast<UsingDecl>(D)) { 3434 // FIXME: This is, unfortunately, linear time. 3435 UsingDecl::shadow_iterator Pos = Using->shadow_begin(); 3436 std::advance(Pos, index); 3437 return MakeCXCursor(cast<UsingShadowDecl>(*Pos)->getTargetDecl(), Unit); 3438 } 3439 3440 if (ObjCClassDecl *Classes = dyn_cast<ObjCClassDecl>(D)) 3441 return MakeCXCursor(Classes->begin()[index].getInterface(), Unit); 3442 3443 if (ObjCForwardProtocolDecl *Protocols = dyn_cast<ObjCForwardProtocolDecl>(D)) 3444 return MakeCXCursor(Protocols->protocol_begin()[index], Unit); 3445 3446 return clang_getNullCursor(); 3447} 3448 3449void clang_getDefinitionSpellingAndExtent(CXCursor C, 3450 const char **startBuf, 3451 const char **endBuf, 3452 unsigned *startLine, 3453 unsigned *startColumn, 3454 unsigned *endLine, 3455 unsigned *endColumn) { 3456 assert(getCursorDecl(C) && "CXCursor has null decl"); 3457 NamedDecl *ND = static_cast<NamedDecl *>(getCursorDecl(C)); 3458 FunctionDecl *FD = dyn_cast<FunctionDecl>(ND); 3459 CompoundStmt *Body = dyn_cast<CompoundStmt>(FD->getBody()); 3460 3461 SourceManager &SM = FD->getASTContext().getSourceManager(); 3462 *startBuf = SM.getCharacterData(Body->getLBracLoc()); 3463 *endBuf = SM.getCharacterData(Body->getRBracLoc()); 3464 *startLine = SM.getSpellingLineNumber(Body->getLBracLoc()); 3465 *startColumn = SM.getSpellingColumnNumber(Body->getLBracLoc()); 3466 *endLine = SM.getSpellingLineNumber(Body->getRBracLoc()); 3467 *endColumn = SM.getSpellingColumnNumber(Body->getRBracLoc()); 3468} 3469 3470void clang_enableStackTraces(void) { 3471 llvm::sys::PrintStackTraceOnErrorSignal(); 3472} 3473 3474} // end: extern "C" 3475 3476//===----------------------------------------------------------------------===// 3477// Token-based Operations. 3478//===----------------------------------------------------------------------===// 3479 3480/* CXToken layout: 3481 * int_data[0]: a CXTokenKind 3482 * int_data[1]: starting token location 3483 * int_data[2]: token length 3484 * int_data[3]: reserved 3485 * ptr_data: for identifiers and keywords, an IdentifierInfo*. 3486 * otherwise unused. 3487 */ 3488extern "C" { 3489 3490CXTokenKind clang_getTokenKind(CXToken CXTok) { 3491 return static_cast<CXTokenKind>(CXTok.int_data[0]); 3492} 3493 3494CXString clang_getTokenSpelling(CXTranslationUnit TU, CXToken CXTok) { 3495 switch (clang_getTokenKind(CXTok)) { 3496 case CXToken_Identifier: 3497 case CXToken_Keyword: 3498 // We know we have an IdentifierInfo*, so use that. 3499 return createCXString(static_cast<IdentifierInfo *>(CXTok.ptr_data) 3500 ->getNameStart()); 3501 3502 case CXToken_Literal: { 3503 // We have stashed the starting pointer in the ptr_data field. Use it. 3504 const char *Text = static_cast<const char *>(CXTok.ptr_data); 3505 return createCXString(llvm::StringRef(Text, CXTok.int_data[2])); 3506 } 3507 3508 case CXToken_Punctuation: 3509 case CXToken_Comment: 3510 break; 3511 } 3512 3513 // We have to find the starting buffer pointer the hard way, by 3514 // deconstructing the source location. 3515 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3516 if (!CXXUnit) 3517 return createCXString(""); 3518 3519 SourceLocation Loc = SourceLocation::getFromRawEncoding(CXTok.int_data[1]); 3520 std::pair<FileID, unsigned> LocInfo 3521 = CXXUnit->getSourceManager().getDecomposedLoc(Loc); 3522 bool Invalid = false; 3523 llvm::StringRef Buffer 3524 = CXXUnit->getSourceManager().getBufferData(LocInfo.first, &Invalid); 3525 if (Invalid) 3526 return createCXString(""); 3527 3528 return createCXString(Buffer.substr(LocInfo.second, CXTok.int_data[2])); 3529} 3530 3531CXSourceLocation clang_getTokenLocation(CXTranslationUnit TU, CXToken CXTok) { 3532 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3533 if (!CXXUnit) 3534 return clang_getNullLocation(); 3535 3536 return cxloc::translateSourceLocation(CXXUnit->getASTContext(), 3537 SourceLocation::getFromRawEncoding(CXTok.int_data[1])); 3538} 3539 3540CXSourceRange clang_getTokenExtent(CXTranslationUnit TU, CXToken CXTok) { 3541 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3542 if (!CXXUnit) 3543 return clang_getNullRange(); 3544 3545 return cxloc::translateSourceRange(CXXUnit->getASTContext(), 3546 SourceLocation::getFromRawEncoding(CXTok.int_data[1])); 3547} 3548 3549void clang_tokenize(CXTranslationUnit TU, CXSourceRange Range, 3550 CXToken **Tokens, unsigned *NumTokens) { 3551 if (Tokens) 3552 *Tokens = 0; 3553 if (NumTokens) 3554 *NumTokens = 0; 3555 3556 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3557 if (!CXXUnit || !Tokens || !NumTokens) 3558 return; 3559 3560 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 3561 3562 SourceRange R = cxloc::translateCXSourceRange(Range); 3563 if (R.isInvalid()) 3564 return; 3565 3566 SourceManager &SourceMgr = CXXUnit->getSourceManager(); 3567 std::pair<FileID, unsigned> BeginLocInfo 3568 = SourceMgr.getDecomposedLoc(R.getBegin()); 3569 std::pair<FileID, unsigned> EndLocInfo 3570 = SourceMgr.getDecomposedLoc(R.getEnd()); 3571 3572 // Cannot tokenize across files. 3573 if (BeginLocInfo.first != EndLocInfo.first) 3574 return; 3575 3576 // Create a lexer 3577 bool Invalid = false; 3578 llvm::StringRef Buffer 3579 = SourceMgr.getBufferData(BeginLocInfo.first, &Invalid); 3580 if (Invalid) 3581 return; 3582 3583 Lexer Lex(SourceMgr.getLocForStartOfFile(BeginLocInfo.first), 3584 CXXUnit->getASTContext().getLangOptions(), 3585 Buffer.begin(), Buffer.data() + BeginLocInfo.second, Buffer.end()); 3586 Lex.SetCommentRetentionState(true); 3587 3588 // Lex tokens until we hit the end of the range. 3589 const char *EffectiveBufferEnd = Buffer.data() + EndLocInfo.second; 3590 llvm::SmallVector<CXToken, 32> CXTokens; 3591 Token Tok; 3592 do { 3593 // Lex the next token 3594 Lex.LexFromRawLexer(Tok); 3595 if (Tok.is(tok::eof)) 3596 break; 3597 3598 // Initialize the CXToken. 3599 CXToken CXTok; 3600 3601 // - Common fields 3602 CXTok.int_data[1] = Tok.getLocation().getRawEncoding(); 3603 CXTok.int_data[2] = Tok.getLength(); 3604 CXTok.int_data[3] = 0; 3605 3606 // - Kind-specific fields 3607 if (Tok.isLiteral()) { 3608 CXTok.int_data[0] = CXToken_Literal; 3609 CXTok.ptr_data = (void *)Tok.getLiteralData(); 3610 } else if (Tok.is(tok::identifier)) { 3611 // Lookup the identifier to determine whether we have a keyword. 3612 std::pair<FileID, unsigned> LocInfo 3613 = SourceMgr.getDecomposedLoc(Tok.getLocation()); 3614 bool Invalid = false; 3615 llvm::StringRef Buf 3616 = CXXUnit->getSourceManager().getBufferData(LocInfo.first, &Invalid); 3617 if (Invalid) 3618 return; 3619 3620 const char *StartPos = Buf.data() + LocInfo.second; 3621 IdentifierInfo *II 3622 = CXXUnit->getPreprocessor().LookUpIdentifierInfo(Tok, StartPos); 3623 3624 if (II->getObjCKeywordID() != tok::objc_not_keyword) { 3625 CXTok.int_data[0] = CXToken_Keyword; 3626 } 3627 else { 3628 CXTok.int_data[0] = II->getTokenID() == tok::identifier? 3629 CXToken_Identifier 3630 : CXToken_Keyword; 3631 } 3632 CXTok.ptr_data = II; 3633 } else if (Tok.is(tok::comment)) { 3634 CXTok.int_data[0] = CXToken_Comment; 3635 CXTok.ptr_data = 0; 3636 } else { 3637 CXTok.int_data[0] = CXToken_Punctuation; 3638 CXTok.ptr_data = 0; 3639 } 3640 CXTokens.push_back(CXTok); 3641 } while (Lex.getBufferLocation() <= EffectiveBufferEnd); 3642 3643 if (CXTokens.empty()) 3644 return; 3645 3646 *Tokens = (CXToken *)malloc(sizeof(CXToken) * CXTokens.size()); 3647 memmove(*Tokens, CXTokens.data(), sizeof(CXToken) * CXTokens.size()); 3648 *NumTokens = CXTokens.size(); 3649} 3650 3651void clang_disposeTokens(CXTranslationUnit TU, 3652 CXToken *Tokens, unsigned NumTokens) { 3653 free(Tokens); 3654} 3655 3656} // end: extern "C" 3657 3658//===----------------------------------------------------------------------===// 3659// Token annotation APIs. 3660//===----------------------------------------------------------------------===// 3661 3662typedef llvm::DenseMap<unsigned, CXCursor> AnnotateTokensData; 3663static enum CXChildVisitResult AnnotateTokensVisitor(CXCursor cursor, 3664 CXCursor parent, 3665 CXClientData client_data); 3666namespace { 3667class AnnotateTokensWorker { 3668 AnnotateTokensData &Annotated; 3669 CXToken *Tokens; 3670 CXCursor *Cursors; 3671 unsigned NumTokens; 3672 unsigned TokIdx; 3673 CursorVisitor AnnotateVis; 3674 SourceManager &SrcMgr; 3675 3676 bool MoreTokens() const { return TokIdx < NumTokens; } 3677 unsigned NextToken() const { return TokIdx; } 3678 void AdvanceToken() { ++TokIdx; } 3679 SourceLocation GetTokenLoc(unsigned tokI) { 3680 return SourceLocation::getFromRawEncoding(Tokens[tokI].int_data[1]); 3681 } 3682 3683public: 3684 AnnotateTokensWorker(AnnotateTokensData &annotated, 3685 CXToken *tokens, CXCursor *cursors, unsigned numTokens, 3686 ASTUnit *CXXUnit, SourceRange RegionOfInterest) 3687 : Annotated(annotated), Tokens(tokens), Cursors(cursors), 3688 NumTokens(numTokens), TokIdx(0), 3689 AnnotateVis(CXXUnit, AnnotateTokensVisitor, this, 3690 Decl::MaxPCHLevel, RegionOfInterest), 3691 SrcMgr(CXXUnit->getSourceManager()) {} 3692 3693 void VisitChildren(CXCursor C) { AnnotateVis.VisitChildren(C); } 3694 enum CXChildVisitResult Visit(CXCursor cursor, CXCursor parent); 3695 void AnnotateTokens(CXCursor parent); 3696}; 3697} 3698 3699void AnnotateTokensWorker::AnnotateTokens(CXCursor parent) { 3700 // Walk the AST within the region of interest, annotating tokens 3701 // along the way. 3702 VisitChildren(parent); 3703 3704 for (unsigned I = 0 ; I < TokIdx ; ++I) { 3705 AnnotateTokensData::iterator Pos = Annotated.find(Tokens[I].int_data[1]); 3706 if (Pos != Annotated.end()) 3707 Cursors[I] = Pos->second; 3708 } 3709 3710 // Finish up annotating any tokens left. 3711 if (!MoreTokens()) 3712 return; 3713 3714 const CXCursor &C = clang_getNullCursor(); 3715 for (unsigned I = TokIdx ; I < NumTokens ; ++I) { 3716 AnnotateTokensData::iterator Pos = Annotated.find(Tokens[I].int_data[1]); 3717 Cursors[I] = (Pos == Annotated.end()) ? C : Pos->second; 3718 } 3719} 3720 3721enum CXChildVisitResult 3722AnnotateTokensWorker::Visit(CXCursor cursor, CXCursor parent) { 3723 CXSourceLocation Loc = clang_getCursorLocation(cursor); 3724 // We can always annotate a preprocessing directive/macro instantiation. 3725 if (clang_isPreprocessing(cursor.kind)) { 3726 Annotated[Loc.int_data] = cursor; 3727 return CXChildVisit_Recurse; 3728 } 3729 3730 SourceRange cursorRange = getRawCursorExtent(cursor); 3731 3732 if (cursorRange.isInvalid()) 3733 return CXChildVisit_Continue; 3734 3735 SourceLocation L = SourceLocation::getFromRawEncoding(Loc.int_data); 3736 3737 // Adjust the annotated range based specific declarations. 3738 const enum CXCursorKind cursorK = clang_getCursorKind(cursor); 3739 if (cursorK >= CXCursor_FirstDecl && cursorK <= CXCursor_LastDecl) { 3740 Decl *D = cxcursor::getCursorDecl(cursor); 3741 // Don't visit synthesized ObjC methods, since they have no syntatic 3742 // representation in the source. 3743 if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { 3744 if (MD->isSynthesized()) 3745 return CXChildVisit_Continue; 3746 } 3747 if (const DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) { 3748 if (TypeSourceInfo *TI = DD->getTypeSourceInfo()) { 3749 TypeLoc TL = TI->getTypeLoc(); 3750 SourceLocation TLoc = TL.getSourceRange().getBegin(); 3751 if (TLoc.isValid() && 3752 SrcMgr.isBeforeInTranslationUnit(TLoc, L)) 3753 cursorRange.setBegin(TLoc); 3754 } 3755 } 3756 } 3757 3758 // If the location of the cursor occurs within a macro instantiation, record 3759 // the spelling location of the cursor in our annotation map. We can then 3760 // paper over the token labelings during a post-processing step to try and 3761 // get cursor mappings for tokens that are the *arguments* of a macro 3762 // instantiation. 3763 if (L.isMacroID()) { 3764 unsigned rawEncoding = SrcMgr.getSpellingLoc(L).getRawEncoding(); 3765 // Only invalidate the old annotation if it isn't part of a preprocessing 3766 // directive. Here we assume that the default construction of CXCursor 3767 // results in CXCursor.kind being an initialized value (i.e., 0). If 3768 // this isn't the case, we can fix by doing lookup + insertion. 3769 3770 CXCursor &oldC = Annotated[rawEncoding]; 3771 if (!clang_isPreprocessing(oldC.kind)) 3772 oldC = cursor; 3773 } 3774 3775 const enum CXCursorKind K = clang_getCursorKind(parent); 3776 const CXCursor updateC = 3777 (clang_isInvalid(K) || K == CXCursor_TranslationUnit) 3778 ? clang_getNullCursor() : parent; 3779 3780 while (MoreTokens()) { 3781 const unsigned I = NextToken(); 3782 SourceLocation TokLoc = GetTokenLoc(I); 3783 switch (LocationCompare(SrcMgr, TokLoc, cursorRange)) { 3784 case RangeBefore: 3785 Cursors[I] = updateC; 3786 AdvanceToken(); 3787 continue; 3788 case RangeAfter: 3789 case RangeOverlap: 3790 break; 3791 } 3792 break; 3793 } 3794 3795 // Visit children to get their cursor information. 3796 const unsigned BeforeChildren = NextToken(); 3797 VisitChildren(cursor); 3798 const unsigned AfterChildren = NextToken(); 3799 3800 // Adjust 'Last' to the last token within the extent of the cursor. 3801 while (MoreTokens()) { 3802 const unsigned I = NextToken(); 3803 SourceLocation TokLoc = GetTokenLoc(I); 3804 switch (LocationCompare(SrcMgr, TokLoc, cursorRange)) { 3805 case RangeBefore: 3806 assert(0 && "Infeasible"); 3807 case RangeAfter: 3808 break; 3809 case RangeOverlap: 3810 Cursors[I] = updateC; 3811 AdvanceToken(); 3812 continue; 3813 } 3814 break; 3815 } 3816 const unsigned Last = NextToken(); 3817 3818 // Scan the tokens that are at the beginning of the cursor, but are not 3819 // capture by the child cursors. 3820 3821 // For AST elements within macros, rely on a post-annotate pass to 3822 // to correctly annotate the tokens with cursors. Otherwise we can 3823 // get confusing results of having tokens that map to cursors that really 3824 // are expanded by an instantiation. 3825 if (L.isMacroID()) 3826 cursor = clang_getNullCursor(); 3827 3828 for (unsigned I = BeforeChildren; I != AfterChildren; ++I) { 3829 if (!clang_isInvalid(clang_getCursorKind(Cursors[I]))) 3830 break; 3831 Cursors[I] = cursor; 3832 } 3833 // Scan the tokens that are at the end of the cursor, but are not captured 3834 // but the child cursors. 3835 for (unsigned I = AfterChildren; I != Last; ++I) 3836 Cursors[I] = cursor; 3837 3838 TokIdx = Last; 3839 return CXChildVisit_Continue; 3840} 3841 3842static enum CXChildVisitResult AnnotateTokensVisitor(CXCursor cursor, 3843 CXCursor parent, 3844 CXClientData client_data) { 3845 return static_cast<AnnotateTokensWorker*>(client_data)->Visit(cursor, parent); 3846} 3847 3848extern "C" { 3849 3850void clang_annotateTokens(CXTranslationUnit TU, 3851 CXToken *Tokens, unsigned NumTokens, 3852 CXCursor *Cursors) { 3853 3854 if (NumTokens == 0 || !Tokens || !Cursors) 3855 return; 3856 3857 ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU); 3858 if (!CXXUnit) { 3859 // Any token we don't specifically annotate will have a NULL cursor. 3860 const CXCursor &C = clang_getNullCursor(); 3861 for (unsigned I = 0; I != NumTokens; ++I) 3862 Cursors[I] = C; 3863 return; 3864 } 3865 3866 ASTUnit::ConcurrencyCheck Check(*CXXUnit); 3867 3868 // Determine the region of interest, which contains all of the tokens. 3869 SourceRange RegionOfInterest; 3870 RegionOfInterest.setBegin(cxloc::translateSourceLocation( 3871 clang_getTokenLocation(TU, Tokens[0]))); 3872 RegionOfInterest.setEnd(cxloc::translateSourceLocation( 3873 clang_getTokenLocation(TU, 3874 Tokens[NumTokens - 1]))); 3875 3876 // A mapping from the source locations found when re-lexing or traversing the 3877 // region of interest to the corresponding cursors. 3878 AnnotateTokensData Annotated; 3879 3880 // Relex the tokens within the source range to look for preprocessing 3881 // directives. 3882 SourceManager &SourceMgr = CXXUnit->getSourceManager(); 3883 std::pair<FileID, unsigned> BeginLocInfo 3884 = SourceMgr.getDecomposedLoc(RegionOfInterest.getBegin()); 3885 std::pair<FileID, unsigned> EndLocInfo 3886 = SourceMgr.getDecomposedLoc(RegionOfInterest.getEnd()); 3887 3888 llvm::StringRef Buffer; 3889 bool Invalid = false; 3890 if (BeginLocInfo.first == EndLocInfo.first && 3891 ((Buffer = SourceMgr.getBufferData(BeginLocInfo.first, &Invalid)),true) && 3892 !Invalid) { 3893 Lexer Lex(SourceMgr.getLocForStartOfFile(BeginLocInfo.first), 3894 CXXUnit->getASTContext().getLangOptions(), 3895 Buffer.begin(), Buffer.data() + BeginLocInfo.second, 3896 Buffer.end()); 3897 Lex.SetCommentRetentionState(true); 3898 3899 // Lex tokens in raw mode until we hit the end of the range, to avoid 3900 // entering #includes or expanding macros. 3901 while (true) { 3902 Token Tok; 3903 Lex.LexFromRawLexer(Tok); 3904 3905 reprocess: 3906 if (Tok.is(tok::hash) && Tok.isAtStartOfLine()) { 3907 // We have found a preprocessing directive. Gobble it up so that we 3908 // don't see it while preprocessing these tokens later, but keep track of 3909 // all of the token locations inside this preprocessing directive so that 3910 // we can annotate them appropriately. 3911 // 3912 // FIXME: Some simple tests here could identify macro definitions and 3913 // #undefs, to provide specific cursor kinds for those. 3914 std::vector<SourceLocation> Locations; 3915 do { 3916 Locations.push_back(Tok.getLocation()); 3917 Lex.LexFromRawLexer(Tok); 3918 } while (!Tok.isAtStartOfLine() && !Tok.is(tok::eof)); 3919 3920 using namespace cxcursor; 3921 CXCursor Cursor 3922 = MakePreprocessingDirectiveCursor(SourceRange(Locations.front(), 3923 Locations.back()), 3924 CXXUnit); 3925 for (unsigned I = 0, N = Locations.size(); I != N; ++I) { 3926 Annotated[Locations[I].getRawEncoding()] = Cursor; 3927 } 3928 3929 if (Tok.isAtStartOfLine()) 3930 goto reprocess; 3931 3932 continue; 3933 } 3934 3935 if (Tok.is(tok::eof)) 3936 break; 3937 } 3938 } 3939 3940 // Annotate all of the source locations in the region of interest that map to 3941 // a specific cursor. 3942 AnnotateTokensWorker W(Annotated, Tokens, Cursors, NumTokens, 3943 CXXUnit, RegionOfInterest); 3944 W.AnnotateTokens(clang_getTranslationUnitCursor(CXXUnit)); 3945} 3946} // end: extern "C" 3947 3948//===----------------------------------------------------------------------===// 3949// Operations for querying linkage of a cursor. 3950//===----------------------------------------------------------------------===// 3951 3952extern "C" { 3953CXLinkageKind clang_getCursorLinkage(CXCursor cursor) { 3954 if (!clang_isDeclaration(cursor.kind)) 3955 return CXLinkage_Invalid; 3956 3957 Decl *D = cxcursor::getCursorDecl(cursor); 3958 if (NamedDecl *ND = dyn_cast_or_null<NamedDecl>(D)) 3959 switch (ND->getLinkage()) { 3960 case NoLinkage: return CXLinkage_NoLinkage; 3961 case InternalLinkage: return CXLinkage_Internal; 3962 case UniqueExternalLinkage: return CXLinkage_UniqueExternal; 3963 case ExternalLinkage: return CXLinkage_External; 3964 }; 3965 3966 return CXLinkage_Invalid; 3967} 3968} // end: extern "C" 3969 3970//===----------------------------------------------------------------------===// 3971// Operations for querying language of a cursor. 3972//===----------------------------------------------------------------------===// 3973 3974static CXLanguageKind getDeclLanguage(const Decl *D) { 3975 switch (D->getKind()) { 3976 default: 3977 break; 3978 case Decl::ImplicitParam: 3979 case Decl::ObjCAtDefsField: 3980 case Decl::ObjCCategory: 3981 case Decl::ObjCCategoryImpl: 3982 case Decl::ObjCClass: 3983 case Decl::ObjCCompatibleAlias: 3984 case Decl::ObjCForwardProtocol: 3985 case Decl::ObjCImplementation: 3986 case Decl::ObjCInterface: 3987 case Decl::ObjCIvar: 3988 case Decl::ObjCMethod: 3989 case Decl::ObjCProperty: 3990 case Decl::ObjCPropertyImpl: 3991 case Decl::ObjCProtocol: 3992 return CXLanguage_ObjC; 3993 case Decl::CXXConstructor: 3994 case Decl::CXXConversion: 3995 case Decl::CXXDestructor: 3996 case Decl::CXXMethod: 3997 case Decl::CXXRecord: 3998 case Decl::ClassTemplate: 3999 case Decl::ClassTemplatePartialSpecialization: 4000 case Decl::ClassTemplateSpecialization: 4001 case Decl::Friend: 4002 case Decl::FriendTemplate: 4003 case Decl::FunctionTemplate: 4004 case Decl::LinkageSpec: 4005 case Decl::Namespace: 4006 case Decl::NamespaceAlias: 4007 case Decl::NonTypeTemplateParm: 4008 case Decl::StaticAssert: 4009 case Decl::TemplateTemplateParm: 4010 case Decl::TemplateTypeParm: 4011 case Decl::UnresolvedUsingTypename: 4012 case Decl::UnresolvedUsingValue: 4013 case Decl::Using: 4014 case Decl::UsingDirective: 4015 case Decl::UsingShadow: 4016 return CXLanguage_CPlusPlus; 4017 } 4018 4019 return CXLanguage_C; 4020} 4021 4022extern "C" { 4023 4024enum CXAvailabilityKind clang_getCursorAvailability(CXCursor cursor) { 4025 if (clang_isDeclaration(cursor.kind)) 4026 if (Decl *D = cxcursor::getCursorDecl(cursor)) { 4027 if (D->hasAttr<UnavailableAttr>() || 4028 (isa<FunctionDecl>(D) && cast<FunctionDecl>(D)->isDeleted())) 4029 return CXAvailability_Available; 4030 4031 if (D->hasAttr<DeprecatedAttr>()) 4032 return CXAvailability_Deprecated; 4033 } 4034 4035 return CXAvailability_Available; 4036} 4037 4038CXLanguageKind clang_getCursorLanguage(CXCursor cursor) { 4039 if (clang_isDeclaration(cursor.kind)) 4040 return getDeclLanguage(cxcursor::getCursorDecl(cursor)); 4041 4042 return CXLanguage_Invalid; 4043} 4044 4045CXCursor clang_getCursorSemanticParent(CXCursor cursor) { 4046 if (clang_isDeclaration(cursor.kind)) { 4047 if (Decl *D = getCursorDecl(cursor)) { 4048 DeclContext *DC = D->getDeclContext(); 4049 return MakeCXCursor(cast<Decl>(DC), getCursorASTUnit(cursor)); 4050 } 4051 } 4052 4053 if (clang_isStatement(cursor.kind) || clang_isExpression(cursor.kind)) { 4054 if (Decl *D = getCursorDecl(cursor)) 4055 return MakeCXCursor(D, getCursorASTUnit(cursor)); 4056 } 4057 4058 return clang_getNullCursor(); 4059} 4060 4061CXCursor clang_getCursorLexicalParent(CXCursor cursor) { 4062 if (clang_isDeclaration(cursor.kind)) { 4063 if (Decl *D = getCursorDecl(cursor)) { 4064 DeclContext *DC = D->getLexicalDeclContext(); 4065 return MakeCXCursor(cast<Decl>(DC), getCursorASTUnit(cursor)); 4066 } 4067 } 4068 4069 // FIXME: Note that we can't easily compute the lexical context of a 4070 // statement or expression, so we return nothing. 4071 return clang_getNullCursor(); 4072} 4073 4074static void CollectOverriddenMethods(DeclContext *Ctx, 4075 ObjCMethodDecl *Method, 4076 llvm::SmallVectorImpl<ObjCMethodDecl *> &Methods) { 4077 if (!Ctx) 4078 return; 4079 4080 // If we have a class or category implementation, jump straight to the 4081 // interface. 4082 if (ObjCImplDecl *Impl = dyn_cast<ObjCImplDecl>(Ctx)) 4083 return CollectOverriddenMethods(Impl->getClassInterface(), Method, Methods); 4084 4085 ObjCContainerDecl *Container = dyn_cast<ObjCContainerDecl>(Ctx); 4086 if (!Container) 4087 return; 4088 4089 // Check whether we have a matching method at this level. 4090 if (ObjCMethodDecl *Overridden = Container->getMethod(Method->getSelector(), 4091 Method->isInstanceMethod())) 4092 if (Method != Overridden) { 4093 // We found an override at this level; there is no need to look 4094 // into other protocols or categories. 4095 Methods.push_back(Overridden); 4096 return; 4097 } 4098 4099 if (ObjCProtocolDecl *Protocol = dyn_cast<ObjCProtocolDecl>(Container)) { 4100 for (ObjCProtocolDecl::protocol_iterator P = Protocol->protocol_begin(), 4101 PEnd = Protocol->protocol_end(); 4102 P != PEnd; ++P) 4103 CollectOverriddenMethods(*P, Method, Methods); 4104 } 4105 4106 if (ObjCCategoryDecl *Category = dyn_cast<ObjCCategoryDecl>(Container)) { 4107 for (ObjCCategoryDecl::protocol_iterator P = Category->protocol_begin(), 4108 PEnd = Category->protocol_end(); 4109 P != PEnd; ++P) 4110 CollectOverriddenMethods(*P, Method, Methods); 4111 } 4112 4113 if (ObjCInterfaceDecl *Interface = dyn_cast<ObjCInterfaceDecl>(Container)) { 4114 for (ObjCInterfaceDecl::protocol_iterator P = Interface->protocol_begin(), 4115 PEnd = Interface->protocol_end(); 4116 P != PEnd; ++P) 4117 CollectOverriddenMethods(*P, Method, Methods); 4118 4119 for (ObjCCategoryDecl *Category = Interface->getCategoryList(); 4120 Category; Category = Category->getNextClassCategory()) 4121 CollectOverriddenMethods(Category, Method, Methods); 4122 4123 // We only look into the superclass if we haven't found anything yet. 4124 if (Methods.empty()) 4125 if (ObjCInterfaceDecl *Super = Interface->getSuperClass()) 4126 return CollectOverriddenMethods(Super, Method, Methods); 4127 } 4128} 4129 4130void clang_getOverriddenCursors(CXCursor cursor, 4131 CXCursor **overridden, 4132 unsigned *num_overridden) { 4133 if (overridden) 4134 *overridden = 0; 4135 if (num_overridden) 4136 *num_overridden = 0; 4137 if (!overridden || !num_overridden) 4138 return; 4139 4140 if (!clang_isDeclaration(cursor.kind)) 4141 return; 4142 4143 Decl *D = getCursorDecl(cursor); 4144 if (!D) 4145 return; 4146 4147 // Handle C++ member functions. 4148 ASTUnit *CXXUnit = getCursorASTUnit(cursor); 4149 if (CXXMethodDecl *CXXMethod = dyn_cast<CXXMethodDecl>(D)) { 4150 *num_overridden = CXXMethod->size_overridden_methods(); 4151 if (!*num_overridden) 4152 return; 4153 4154 *overridden = new CXCursor [*num_overridden]; 4155 unsigned I = 0; 4156 for (CXXMethodDecl::method_iterator 4157 M = CXXMethod->begin_overridden_methods(), 4158 MEnd = CXXMethod->end_overridden_methods(); 4159 M != MEnd; (void)++M, ++I) 4160 (*overridden)[I] = MakeCXCursor(const_cast<CXXMethodDecl*>(*M), CXXUnit); 4161 return; 4162 } 4163 4164 ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(D); 4165 if (!Method) 4166 return; 4167 4168 // Handle Objective-C methods. 4169 llvm::SmallVector<ObjCMethodDecl *, 4> Methods; 4170 CollectOverriddenMethods(Method->getDeclContext(), Method, Methods); 4171 4172 if (Methods.empty()) 4173 return; 4174 4175 *num_overridden = Methods.size(); 4176 *overridden = new CXCursor [Methods.size()]; 4177 for (unsigned I = 0, N = Methods.size(); I != N; ++I) 4178 (*overridden)[I] = MakeCXCursor(Methods[I], CXXUnit); 4179} 4180 4181void clang_disposeOverriddenCursors(CXCursor *overridden) { 4182 delete [] overridden; 4183} 4184 4185} // end: extern "C" 4186 4187 4188//===----------------------------------------------------------------------===// 4189// C++ AST instrospection. 4190//===----------------------------------------------------------------------===// 4191 4192extern "C" { 4193unsigned clang_CXXMethod_isStatic(CXCursor C) { 4194 if (!clang_isDeclaration(C.kind)) 4195 return 0; 4196 4197 CXXMethodDecl *Method = 0; 4198 Decl *D = cxcursor::getCursorDecl(C); 4199 if (FunctionTemplateDecl *FunTmpl = dyn_cast_or_null<FunctionTemplateDecl>(D)) 4200 Method = dyn_cast<CXXMethodDecl>(FunTmpl->getTemplatedDecl()); 4201 else 4202 Method = dyn_cast_or_null<CXXMethodDecl>(D); 4203 return (Method && Method->isStatic()) ? 1 : 0; 4204} 4205 4206} // end: extern "C" 4207 4208//===----------------------------------------------------------------------===// 4209// Attribute introspection. 4210//===----------------------------------------------------------------------===// 4211 4212extern "C" { 4213CXType clang_getIBOutletCollectionType(CXCursor C) { 4214 if (C.kind != CXCursor_IBOutletCollectionAttr) 4215 return cxtype::MakeCXType(QualType(), cxcursor::getCursorASTUnit(C)); 4216 4217 IBOutletCollectionAttr *A = 4218 cast<IBOutletCollectionAttr>(cxcursor::getCursorAttr(C)); 4219 4220 return cxtype::MakeCXType(A->getInterface(), cxcursor::getCursorASTUnit(C)); 4221} 4222} // end: extern "C" 4223 4224//===----------------------------------------------------------------------===// 4225// CXString Operations. 4226//===----------------------------------------------------------------------===// 4227 4228extern "C" { 4229const char *clang_getCString(CXString string) { 4230 return string.Spelling; 4231} 4232 4233void clang_disposeString(CXString string) { 4234 if (string.MustFreeString && string.Spelling) 4235 free((void*)string.Spelling); 4236} 4237 4238} // end: extern "C" 4239 4240namespace clang { namespace cxstring { 4241CXString createCXString(const char *String, bool DupString){ 4242 CXString Str; 4243 if (DupString) { 4244 Str.Spelling = strdup(String); 4245 Str.MustFreeString = 1; 4246 } else { 4247 Str.Spelling = String; 4248 Str.MustFreeString = 0; 4249 } 4250 return Str; 4251} 4252 4253CXString createCXString(llvm::StringRef String, bool DupString) { 4254 CXString Result; 4255 if (DupString || (!String.empty() && String.data()[String.size()] != 0)) { 4256 char *Spelling = (char *)malloc(String.size() + 1); 4257 memmove(Spelling, String.data(), String.size()); 4258 Spelling[String.size()] = 0; 4259 Result.Spelling = Spelling; 4260 Result.MustFreeString = 1; 4261 } else { 4262 Result.Spelling = String.data(); 4263 Result.MustFreeString = 0; 4264 } 4265 return Result; 4266} 4267}} 4268 4269//===----------------------------------------------------------------------===// 4270// Misc. utility functions. 4271//===----------------------------------------------------------------------===// 4272 4273extern "C" { 4274 4275CXString clang_getClangVersion() { 4276 return createCXString(getClangFullVersion()); 4277} 4278 4279} // end: extern "C" 4280