clang/tools/libclang/CXCursor.cpp

   1 //===- CXCursor.cpp - Routines for manipulating CXCursors -----------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file defines routines for manipulating CXCursors. It should be the
  10 // only file that has internal knowledge of the encoding of the data in
  11 // CXCursor.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "CXCursor.h"
  16 #include "CXString.h"
  17 #include "CXTranslationUnit.h"
  18 #include "CXType.h"
  19 #include "clang-c/Index.h"
  20 #include "clang/AST/Attr.h"
  21 #include "clang/AST/Decl.h"
  22 #include "clang/AST/DeclCXX.h"
  23 #include "clang/AST/DeclObjC.h"
  24 #include "clang/AST/DeclTemplate.h"
  25 #include "clang/AST/Expr.h"
  26 #include "clang/AST/ExprCXX.h"
  27 #include "clang/AST/ExprObjC.h"
  28 #include "clang/Frontend/ASTUnit.h"
  29 #include "llvm/Support/ErrorHandling.h"
  30
  31 using namespace clang;
  32 using namespace cxcursor;
  33
  34 CXCursor cxcursor::MakeCXCursorInvalid(CXCursorKind K, CXTranslationUnit TU) {
  35   assert(K >= CXCursor_FirstInvalid && K <= CXCursor_LastInvalid);
  36   CXCursor C = {K, 0, {nullptr, nullptr, TU}};
  37   return C;
  38 }
  39
  40 static CXCursorKind GetCursorKind(const Attr *A) {
  41   assert(A && "Invalid arguments!");
  42   switch (A->getKind()) {
  43   default:
  44     break;
  45   case attr::IBAction:
  46     return CXCursor_IBActionAttr;
  47   case attr::IBOutlet:
  48     return CXCursor_IBOutletAttr;
  49   case attr::IBOutletCollection:
  50     return CXCursor_IBOutletCollectionAttr;
  51   case attr::Final:
  52     return CXCursor_CXXFinalAttr;
  53   case attr::Override:
  54     return CXCursor_CXXOverrideAttr;
  55   case attr::Annotate:
  56     return CXCursor_AnnotateAttr;
  57   case attr::AsmLabel:
  58     return CXCursor_AsmLabelAttr;
  59   case attr::Packed:
  60     return CXCursor_PackedAttr;
  61   case attr::Pure:
  62     return CXCursor_PureAttr;
  63   case attr::Const:
  64     return CXCursor_ConstAttr;
  65   case attr::NoDuplicate:
  66     return CXCursor_NoDuplicateAttr;
  67   case attr::CUDAConstant:
  68     return CXCursor_CUDAConstantAttr;
  69   case attr::CUDADevice:
  70     return CXCursor_CUDADeviceAttr;
  71   case attr::CUDAGlobal:
  72     return CXCursor_CUDAGlobalAttr;
  73   case attr::CUDAHost:
  74     return CXCursor_CUDAHostAttr;
  75   case attr::CUDAShared:
  76     return CXCursor_CUDASharedAttr;
  77   case attr::Visibility:
  78     return CXCursor_VisibilityAttr;
  79   case attr::DLLExport:
  80     return CXCursor_DLLExport;
  81   case attr::DLLImport:
  82     return CXCursor_DLLImport;
  83   case attr::NSReturnsRetained:
  84     return CXCursor_NSReturnsRetained;
  85   case attr::NSReturnsNotRetained:
  86     return CXCursor_NSReturnsNotRetained;
  87   case attr::NSReturnsAutoreleased:
  88     return CXCursor_NSReturnsAutoreleased;
  89   case attr::NSConsumesSelf:
  90     return CXCursor_NSConsumesSelf;
  91   case attr::NSConsumed:
  92     return CXCursor_NSConsumed;
  93   case attr::ObjCException:
  94     return CXCursor_ObjCException;
  95   case attr::ObjCNSObject:
  96     return CXCursor_ObjCNSObject;
  97   case attr::ObjCIndependentClass:
  98     return CXCursor_ObjCIndependentClass;
  99   case attr::ObjCPreciseLifetime:
 100     return CXCursor_ObjCPreciseLifetime;
 101   case attr::ObjCReturnsInnerPointer:
 102     return CXCursor_ObjCReturnsInnerPointer;
 103   case attr::ObjCRequiresSuper:
 104     return CXCursor_ObjCRequiresSuper;
 105   case attr::ObjCRootClass:
 106     return CXCursor_ObjCRootClass;
 107   case attr::ObjCSubclassingRestricted:
 108     return CXCursor_ObjCSubclassingRestricted;
 109   case attr::ObjCExplicitProtocolImpl:
 110     return CXCursor_ObjCExplicitProtocolImpl;
 111   case attr::ObjCDesignatedInitializer:
 112     return CXCursor_ObjCDesignatedInitializer;
 113   case attr::ObjCRuntimeVisible:
 114     return CXCursor_ObjCRuntimeVisible;
 115   case attr::ObjCBoxable:
 116     return CXCursor_ObjCBoxable;
 117   case attr::FlagEnum:
 118     return CXCursor_FlagEnum;
 119   case attr::Convergent:
 120     return CXCursor_ConvergentAttr;
 121   case attr::WarnUnused:
 122     return CXCursor_WarnUnusedAttr;
 123   case attr::WarnUnusedResult:
 124     return CXCursor_WarnUnusedResultAttr;
 125   case attr::Aligned:
 126     return CXCursor_AlignedAttr;
 127   }
 128
 129   return CXCursor_UnexposedAttr;
 130 }
 131
 132 CXCursor cxcursor::MakeCXCursor(const Attr *A, const Decl *Parent,
 133                                 CXTranslationUnit TU) {
 134   assert(A && Parent && TU && "Invalid arguments!");
 135   CXCursor C = {GetCursorKind(A), 0, {Parent, A, TU}};
 136   return C;
 137 }
 138
 139 CXCursor cxcursor::MakeCXCursor(const Decl *D, CXTranslationUnit TU,
 140                                 SourceRange RegionOfInterest,
 141                                 bool FirstInDeclGroup) {
 142   assert(D && TU && "Invalid arguments!");
 143
 144   CXCursorKind K = getCursorKindForDecl(D);
 145
 146   if (K == CXCursor_ObjCClassMethodDecl ||
 147       K == CXCursor_ObjCInstanceMethodDecl) {
 148     int SelectorIdIndex = -1;
 149     // Check if cursor points to a selector id.
 150     if (RegionOfInterest.isValid() &&
 151         RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
 152       SmallVector<SourceLocation, 16> SelLocs;
 153       cast<ObjCMethodDecl>(D)->getSelectorLocs(SelLocs);
 154       SmallVectorImpl<SourceLocation>::iterator I =
 155           llvm::find(SelLocs, RegionOfInterest.getBegin());
 156       if (I != SelLocs.end())
 157         SelectorIdIndex = I - SelLocs.begin();
 158     }
 159     CXCursor C = {K,
 160                   SelectorIdIndex,
 161                   {D, (void *)(intptr_t)(FirstInDeclGroup ? 1 : 0), TU}};
 162     return C;
 163   }
 164
 165   CXCursor C = {K, 0, {D, (void *)(intptr_t)(FirstInDeclGroup ? 1 : 0), TU}};
 166   return C;
 167 }
 168
 169 CXCursor cxcursor::MakeCXCursor(const Stmt *S, const Decl *Parent,
 170                                 CXTranslationUnit TU,
 171                                 SourceRange RegionOfInterest) {
 172   assert(S && TU && "Invalid arguments!");
 173   CXCursorKind K = CXCursor_NotImplemented;
 174
 175   switch (S->getStmtClass()) {
 176   case Stmt::NoStmtClass:
 177     break;
 178
 179   case Stmt::CaseStmtClass:
 180     K = CXCursor_CaseStmt;
 181     break;
 182
 183   case Stmt::DefaultStmtClass:
 184     K = CXCursor_DefaultStmt;
 185     break;
 186
 187   case Stmt::IfStmtClass:
 188     K = CXCursor_IfStmt;
 189     break;
 190
 191   case Stmt::SwitchStmtClass:
 192     K = CXCursor_SwitchStmt;
 193     break;
 194
 195   case Stmt::WhileStmtClass:
 196     K = CXCursor_WhileStmt;
 197     break;
 198
 199   case Stmt::DoStmtClass:
 200     K = CXCursor_DoStmt;
 201     break;
 202
 203   case Stmt::ForStmtClass:
 204     K = CXCursor_ForStmt;
 205     break;
 206
 207   case Stmt::GotoStmtClass:
 208     K = CXCursor_GotoStmt;
 209     break;
 210
 211   case Stmt::IndirectGotoStmtClass:
 212     K = CXCursor_IndirectGotoStmt;
 213     break;
 214
 215   case Stmt::ContinueStmtClass:
 216     K = CXCursor_ContinueStmt;
 217     break;
 218
 219   case Stmt::BreakStmtClass:
 220     K = CXCursor_BreakStmt;
 221     break;
 222
 223   case Stmt::ReturnStmtClass:
 224     K = CXCursor_ReturnStmt;
 225     break;
 226
 227   case Stmt::GCCAsmStmtClass:
 228     K = CXCursor_GCCAsmStmt;
 229     break;
 230
 231   case Stmt::MSAsmStmtClass:
 232     K = CXCursor_MSAsmStmt;
 233     break;
 234
 235   case Stmt::ObjCAtTryStmtClass:
 236     K = CXCursor_ObjCAtTryStmt;
 237     break;
 238
 239   case Stmt::ObjCAtCatchStmtClass:
 240     K = CXCursor_ObjCAtCatchStmt;
 241     break;
 242
 243   case Stmt::ObjCAtFinallyStmtClass:
 244     K = CXCursor_ObjCAtFinallyStmt;
 245     break;
 246
 247   case Stmt::ObjCAtThrowStmtClass:
 248     K = CXCursor_ObjCAtThrowStmt;
 249     break;
 250
 251   case Stmt::ObjCAtSynchronizedStmtClass:
 252     K = CXCursor_ObjCAtSynchronizedStmt;
 253     break;
 254
 255   case Stmt::ObjCAutoreleasePoolStmtClass:
 256     K = CXCursor_ObjCAutoreleasePoolStmt;
 257     break;
 258
 259   case Stmt::ObjCForCollectionStmtClass:
 260     K = CXCursor_ObjCForCollectionStmt;
 261     break;
 262
 263   case Stmt::CXXCatchStmtClass:
 264     K = CXCursor_CXXCatchStmt;
 265     break;
 266
 267   case Stmt::CXXTryStmtClass:
 268     K = CXCursor_CXXTryStmt;
 269     break;
 270
 271   case Stmt::CXXForRangeStmtClass:
 272     K = CXCursor_CXXForRangeStmt;
 273     break;
 274
 275   case Stmt::SEHTryStmtClass:
 276     K = CXCursor_SEHTryStmt;
 277     break;
 278
 279   case Stmt::SEHExceptStmtClass:
 280     K = CXCursor_SEHExceptStmt;
 281     break;
 282
 283   case Stmt::SEHFinallyStmtClass:
 284     K = CXCursor_SEHFinallyStmt;
 285     break;
 286
 287   case Stmt::SEHLeaveStmtClass:
 288     K = CXCursor_SEHLeaveStmt;
 289     break;
 290
 291   case Stmt::CoroutineBodyStmtClass:
 292   case Stmt::CoreturnStmtClass:
 293     K = CXCursor_UnexposedStmt;
 294     break;
 295
 296   case Stmt::ArrayTypeTraitExprClass:
 297   case Stmt::AsTypeExprClass:
 298   case Stmt::AtomicExprClass:
 299   case Stmt::BinaryConditionalOperatorClass:
 300   case Stmt::TypeTraitExprClass:
 301   case Stmt::CoawaitExprClass:
 302   case Stmt::DependentCoawaitExprClass:
 303   case Stmt::CoyieldExprClass:
 304   case Stmt::CXXBindTemporaryExprClass:
 305   case Stmt::CXXDefaultArgExprClass:
 306   case Stmt::CXXDefaultInitExprClass:
 307   case Stmt::CXXFoldExprClass:
 308   case Stmt::CXXRewrittenBinaryOperatorClass:
 309   case Stmt::CXXStdInitializerListExprClass:
 310   case Stmt::CXXScalarValueInitExprClass:
 311   case Stmt::CXXUuidofExprClass:
 312   case Stmt::ChooseExprClass:
 313   case Stmt::DesignatedInitExprClass:
 314   case Stmt::DesignatedInitUpdateExprClass:
 315   case Stmt::ArrayInitLoopExprClass:
 316   case Stmt::ArrayInitIndexExprClass:
 317   case Stmt::ExprWithCleanupsClass:
 318   case Stmt::ExpressionTraitExprClass:
 319   case Stmt::ExtVectorElementExprClass:
 320   case Stmt::ImplicitCastExprClass:
 321   case Stmt::ImplicitValueInitExprClass:
 322   case Stmt::NoInitExprClass:
 323   case Stmt::MaterializeTemporaryExprClass:
 324   case Stmt::ObjCIndirectCopyRestoreExprClass:
 325   case Stmt::OffsetOfExprClass:
 326   case Stmt::ParenListExprClass:
 327   case Stmt::PredefinedExprClass:
 328   case Stmt::ShuffleVectorExprClass:
 329   case Stmt::SourceLocExprClass:
 330   case Stmt::ConvertVectorExprClass:
 331   case Stmt::VAArgExprClass:
 332   case Stmt::ObjCArrayLiteralClass:
 333   case Stmt::ObjCDictionaryLiteralClass:
 334   case Stmt::ObjCBoxedExprClass:
 335   case Stmt::ObjCSubscriptRefExprClass:
 336   case Stmt::RecoveryExprClass:
 337   case Stmt::SYCLUniqueStableNameExprClass:
 338   case Stmt::EmbedExprClass:
 339   case Stmt::HLSLOutArgExprClass:
 340   case Stmt::OpenACCAsteriskSizeExprClass:
 341   case Stmt::ResolvedUnexpandedPackExprClass:
 342     K = CXCursor_UnexposedExpr;
 343     break;
 344
 345   case Stmt::OpaqueValueExprClass:
 346     if (Expr *Src = cast<OpaqueValueExpr>(S)->getSourceExpr())
 347       return MakeCXCursor(Src, Parent, TU, RegionOfInterest);
 348     K = CXCursor_UnexposedExpr;
 349     break;
 350
 351   case Stmt::PseudoObjectExprClass:
 352     return MakeCXCursor(cast<PseudoObjectExpr>(S)->getSyntacticForm(), Parent,
 353                         TU, RegionOfInterest);
 354
 355   case Stmt::CompoundStmtClass:
 356     K = CXCursor_CompoundStmt;
 357     break;
 358
 359   case Stmt::NullStmtClass:
 360     K = CXCursor_NullStmt;
 361     break;
 362
 363   case Stmt::LabelStmtClass:
 364     K = CXCursor_LabelStmt;
 365     break;
 366
 367   case Stmt::AttributedStmtClass:
 368     K = CXCursor_UnexposedStmt;
 369     break;
 370
 371   case Stmt::DeclStmtClass:
 372     K = CXCursor_DeclStmt;
 373     break;
 374
 375   case Stmt::CapturedStmtClass:
 376     K = CXCursor_UnexposedStmt;
 377     break;
 378
 379   case Stmt::SYCLKernelCallStmtClass:
 380     K = CXCursor_UnexposedStmt;
 381     break;
 382
 383   case Stmt::IntegerLiteralClass:
 384     K = CXCursor_IntegerLiteral;
 385     break;
 386
 387   case Stmt::FixedPointLiteralClass:
 388     K = CXCursor_FixedPointLiteral;
 389     break;
 390
 391   case Stmt::FloatingLiteralClass:
 392     K = CXCursor_FloatingLiteral;
 393     break;
 394
 395   case Stmt::ImaginaryLiteralClass:
 396     K = CXCursor_ImaginaryLiteral;
 397     break;
 398
 399   case Stmt::StringLiteralClass:
 400     K = CXCursor_StringLiteral;
 401     break;
 402
 403   case Stmt::CharacterLiteralClass:
 404     K = CXCursor_CharacterLiteral;
 405     break;
 406
 407   case Stmt::ConstantExprClass:
 408     return MakeCXCursor(cast<ConstantExpr>(S)->getSubExpr(), Parent, TU,
 409                         RegionOfInterest);
 410
 411   case Stmt::ParenExprClass:
 412     K = CXCursor_ParenExpr;
 413     break;
 414
 415   case Stmt::UnaryOperatorClass:
 416     K = CXCursor_UnaryOperator;
 417     break;
 418
 419   case Stmt::UnaryExprOrTypeTraitExprClass:
 420   case Stmt::CXXNoexceptExprClass:
 421     K = CXCursor_UnaryExpr;
 422     break;
 423
 424   case Stmt::MSPropertySubscriptExprClass:
 425   case Stmt::ArraySubscriptExprClass:
 426     K = CXCursor_ArraySubscriptExpr;
 427     break;
 428
 429   case Stmt::MatrixSubscriptExprClass:
 430     // TODO: add support for MatrixSubscriptExpr.
 431     K = CXCursor_UnexposedExpr;
 432     break;
 433
 434   case Stmt::ArraySectionExprClass:
 435     K = CXCursor_ArraySectionExpr;
 436     break;
 437
 438   case Stmt::OMPArrayShapingExprClass:
 439     K = CXCursor_OMPArrayShapingExpr;
 440     break;
 441
 442   case Stmt::OMPIteratorExprClass:
 443     K = CXCursor_OMPIteratorExpr;
 444     break;
 445
 446   case Stmt::BinaryOperatorClass:
 447     K = CXCursor_BinaryOperator;
 448     break;
 449
 450   case Stmt::CompoundAssignOperatorClass:
 451     K = CXCursor_CompoundAssignOperator;
 452     break;
 453
 454   case Stmt::ConditionalOperatorClass:
 455     K = CXCursor_ConditionalOperator;
 456     break;
 457
 458   case Stmt::CStyleCastExprClass:
 459     K = CXCursor_CStyleCastExpr;
 460     break;
 461
 462   case Stmt::CompoundLiteralExprClass:
 463     K = CXCursor_CompoundLiteralExpr;
 464     break;
 465
 466   case Stmt::InitListExprClass:
 467     K = CXCursor_InitListExpr;
 468     break;
 469
 470   case Stmt::AddrLabelExprClass:
 471     K = CXCursor_AddrLabelExpr;
 472     break;
 473
 474   case Stmt::StmtExprClass:
 475     K = CXCursor_StmtExpr;
 476     break;
 477
 478   case Stmt::GenericSelectionExprClass:
 479     K = CXCursor_GenericSelectionExpr;
 480     break;
 481
 482   case Stmt::GNUNullExprClass:
 483     K = CXCursor_GNUNullExpr;
 484     break;
 485
 486   case Stmt::CXXStaticCastExprClass:
 487     K = CXCursor_CXXStaticCastExpr;
 488     break;
 489
 490   case Stmt::CXXDynamicCastExprClass:
 491     K = CXCursor_CXXDynamicCastExpr;
 492     break;
 493
 494   case Stmt::CXXReinterpretCastExprClass:
 495     K = CXCursor_CXXReinterpretCastExpr;
 496     break;
 497
 498   case Stmt::CXXConstCastExprClass:
 499     K = CXCursor_CXXConstCastExpr;
 500     break;
 501
 502   case Stmt::CXXFunctionalCastExprClass:
 503     K = CXCursor_CXXFunctionalCastExpr;
 504     break;
 505
 506   case Stmt::CXXAddrspaceCastExprClass:
 507     K = CXCursor_CXXAddrspaceCastExpr;
 508     break;
 509
 510   case Stmt::CXXTypeidExprClass:
 511     K = CXCursor_CXXTypeidExpr;
 512     break;
 513
 514   case Stmt::CXXBoolLiteralExprClass:
 515     K = CXCursor_CXXBoolLiteralExpr;
 516     break;
 517
 518   case Stmt::CXXNullPtrLiteralExprClass:
 519     K = CXCursor_CXXNullPtrLiteralExpr;
 520     break;
 521
 522   case Stmt::CXXThisExprClass:
 523     K = CXCursor_CXXThisExpr;
 524     break;
 525
 526   case Stmt::CXXThrowExprClass:
 527     K = CXCursor_CXXThrowExpr;
 528     break;
 529
 530   case Stmt::CXXNewExprClass:
 531     K = CXCursor_CXXNewExpr;
 532     break;
 533
 534   case Stmt::CXXDeleteExprClass:
 535     K = CXCursor_CXXDeleteExpr;
 536     break;
 537
 538   case Stmt::ObjCStringLiteralClass:
 539     K = CXCursor_ObjCStringLiteral;
 540     break;
 541
 542   case Stmt::ObjCEncodeExprClass:
 543     K = CXCursor_ObjCEncodeExpr;
 544     break;
 545
 546   case Stmt::ObjCSelectorExprClass:
 547     K = CXCursor_ObjCSelectorExpr;
 548     break;
 549
 550   case Stmt::ObjCProtocolExprClass:
 551     K = CXCursor_ObjCProtocolExpr;
 552     break;
 553
 554   case Stmt::ObjCBoolLiteralExprClass:
 555     K = CXCursor_ObjCBoolLiteralExpr;
 556     break;
 557
 558   case Stmt::ObjCAvailabilityCheckExprClass:
 559     K = CXCursor_ObjCAvailabilityCheckExpr;
 560     break;
 561
 562   case Stmt::ObjCBridgedCastExprClass:
 563     K = CXCursor_ObjCBridgedCastExpr;
 564     break;
 565
 566   case Stmt::BlockExprClass:
 567     K = CXCursor_BlockExpr;
 568     break;
 569
 570   case Stmt::PackExpansionExprClass:
 571     K = CXCursor_PackExpansionExpr;
 572     break;
 573
 574   case Stmt::SizeOfPackExprClass:
 575     K = CXCursor_SizeOfPackExpr;
 576     break;
 577
 578   case Stmt::PackIndexingExprClass:
 579     K = CXCursor_PackIndexingExpr;
 580     break;
 581
 582   case Stmt::DeclRefExprClass:
 583     if (const ImplicitParamDecl *IPD = dyn_cast_or_null<ImplicitParamDecl>(
 584             cast<DeclRefExpr>(S)->getDecl())) {
 585       if (const ObjCMethodDecl *MD =
 586               dyn_cast<ObjCMethodDecl>(IPD->getDeclContext())) {
 587         if (MD->getSelfDecl() == IPD) {
 588           K = CXCursor_ObjCSelfExpr;
 589           break;
 590         }
 591       }
 592     }
 593
 594     K = CXCursor_DeclRefExpr;
 595     break;
 596
 597   case Stmt::DependentScopeDeclRefExprClass:
 598   case Stmt::SubstNonTypeTemplateParmExprClass:
 599   case Stmt::SubstNonTypeTemplateParmPackExprClass:
 600   case Stmt::FunctionParmPackExprClass:
 601   case Stmt::UnresolvedLookupExprClass:
 602   case Stmt::TypoExprClass: // A typo could actually be a DeclRef or a MemberRef
 603     K = CXCursor_DeclRefExpr;
 604     break;
 605
 606   case Stmt::CXXDependentScopeMemberExprClass:
 607   case Stmt::CXXPseudoDestructorExprClass:
 608   case Stmt::MemberExprClass:
 609   case Stmt::MSPropertyRefExprClass:
 610   case Stmt::ObjCIsaExprClass:
 611   case Stmt::ObjCIvarRefExprClass:
 612   case Stmt::ObjCPropertyRefExprClass:
 613   case Stmt::UnresolvedMemberExprClass:
 614     K = CXCursor_MemberRefExpr;
 615     break;
 616
 617   case Stmt::CallExprClass:
 618   case Stmt::CXXOperatorCallExprClass:
 619   case Stmt::CXXMemberCallExprClass:
 620   case Stmt::CUDAKernelCallExprClass:
 621   case Stmt::CXXConstructExprClass:
 622   case Stmt::CXXInheritedCtorInitExprClass:
 623   case Stmt::CXXTemporaryObjectExprClass:
 624   case Stmt::CXXUnresolvedConstructExprClass:
 625   case Stmt::UserDefinedLiteralClass:
 626     K = CXCursor_CallExpr;
 627     break;
 628
 629   case Stmt::LambdaExprClass:
 630     K = CXCursor_LambdaExpr;
 631     break;
 632
 633   case Stmt::ObjCMessageExprClass: {
 634     K = CXCursor_ObjCMessageExpr;
 635     int SelectorIdIndex = -1;
 636     // Check if cursor points to a selector id.
 637     if (RegionOfInterest.isValid() &&
 638         RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
 639       SmallVector<SourceLocation, 16> SelLocs;
 640       cast<ObjCMessageExpr>(S)->getSelectorLocs(SelLocs);
 641       SmallVectorImpl<SourceLocation>::iterator I =
 642           llvm::find(SelLocs, RegionOfInterest.getBegin());
 643       if (I != SelLocs.end())
 644         SelectorIdIndex = I - SelLocs.begin();
 645     }
 646     CXCursor C = {K, 0, {Parent, S, TU}};
 647     return getSelectorIdentifierCursor(SelectorIdIndex, C);
 648   }
 649
 650   case Stmt::ConceptSpecializationExprClass:
 651     K = CXCursor_ConceptSpecializationExpr;
 652     break;
 653
 654   case Stmt::RequiresExprClass:
 655     K = CXCursor_RequiresExpr;
 656     break;
 657
 658   case Stmt::CXXParenListInitExprClass:
 659     K = CXCursor_CXXParenListInitExpr;
 660     break;
 661
 662   case Stmt::MSDependentExistsStmtClass:
 663     K = CXCursor_UnexposedStmt;
 664     break;
 665   case Stmt::OMPCanonicalLoopClass:
 666     K = CXCursor_OMPCanonicalLoop;
 667     break;
 668   case Stmt::OMPMetaDirectiveClass:
 669     K = CXCursor_OMPMetaDirective;
 670     break;
 671   case Stmt::OMPParallelDirectiveClass:
 672     K = CXCursor_OMPParallelDirective;
 673     break;
 674   case Stmt::OMPSimdDirectiveClass:
 675     K = CXCursor_OMPSimdDirective;
 676     break;
 677   case Stmt::OMPTileDirectiveClass:
 678     K = CXCursor_OMPTileDirective;
 679     break;
 680   case Stmt::OMPUnrollDirectiveClass:
 681     K = CXCursor_OMPUnrollDirective;
 682     break;
 683   case Stmt::OMPReverseDirectiveClass:
 684     K = CXCursor_OMPReverseDirective;
 685     break;
 686   case Stmt::OMPInterchangeDirectiveClass:
 687     K = CXCursor_OMPTileDirective;
 688     break;
 689   case Stmt::OMPForDirectiveClass:
 690     K = CXCursor_OMPForDirective;
 691     break;
 692   case Stmt::OMPForSimdDirectiveClass:
 693     K = CXCursor_OMPForSimdDirective;
 694     break;
 695   case Stmt::OMPSectionsDirectiveClass:
 696     K = CXCursor_OMPSectionsDirective;
 697     break;
 698   case Stmt::OMPSectionDirectiveClass:
 699     K = CXCursor_OMPSectionDirective;
 700     break;
 701   case Stmt::OMPScopeDirectiveClass:
 702     K = CXCursor_OMPScopeDirective;
 703     break;
 704   case Stmt::OMPSingleDirectiveClass:
 705     K = CXCursor_OMPSingleDirective;
 706     break;
 707   case Stmt::OMPMasterDirectiveClass:
 708     K = CXCursor_OMPMasterDirective;
 709     break;
 710   case Stmt::OMPCriticalDirectiveClass:
 711     K = CXCursor_OMPCriticalDirective;
 712     break;
 713   case Stmt::OMPParallelForDirectiveClass:
 714     K = CXCursor_OMPParallelForDirective;
 715     break;
 716   case Stmt::OMPParallelForSimdDirectiveClass:
 717     K = CXCursor_OMPParallelForSimdDirective;
 718     break;
 719   case Stmt::OMPParallelMasterDirectiveClass:
 720     K = CXCursor_OMPParallelMasterDirective;
 721     break;
 722   case Stmt::OMPParallelMaskedDirectiveClass:
 723     K = CXCursor_OMPParallelMaskedDirective;
 724     break;
 725   case Stmt::OMPParallelSectionsDirectiveClass:
 726     K = CXCursor_OMPParallelSectionsDirective;
 727     break;
 728   case Stmt::OMPTaskDirectiveClass:
 729     K = CXCursor_OMPTaskDirective;
 730     break;
 731   case Stmt::OMPTaskyieldDirectiveClass:
 732     K = CXCursor_OMPTaskyieldDirective;
 733     break;
 734   case Stmt::OMPBarrierDirectiveClass:
 735     K = CXCursor_OMPBarrierDirective;
 736     break;
 737   case Stmt::OMPTaskwaitDirectiveClass:
 738     K = CXCursor_OMPTaskwaitDirective;
 739     break;
 740   case Stmt::OMPErrorDirectiveClass:
 741     K = CXCursor_OMPErrorDirective;
 742     break;
 743   case Stmt::OMPTaskgroupDirectiveClass:
 744     K = CXCursor_OMPTaskgroupDirective;
 745     break;
 746   case Stmt::OMPFlushDirectiveClass:
 747     K = CXCursor_OMPFlushDirective;
 748     break;
 749   case Stmt::OMPDepobjDirectiveClass:
 750     K = CXCursor_OMPDepobjDirective;
 751     break;
 752   case Stmt::OMPScanDirectiveClass:
 753     K = CXCursor_OMPScanDirective;
 754     break;
 755   case Stmt::OMPOrderedDirectiveClass:
 756     K = CXCursor_OMPOrderedDirective;
 757     break;
 758   case Stmt::OMPAtomicDirectiveClass:
 759     K = CXCursor_OMPAtomicDirective;
 760     break;
 761   case Stmt::OMPTargetDirectiveClass:
 762     K = CXCursor_OMPTargetDirective;
 763     break;
 764   case Stmt::OMPTargetDataDirectiveClass:
 765     K = CXCursor_OMPTargetDataDirective;
 766     break;
 767   case Stmt::OMPTargetEnterDataDirectiveClass:
 768     K = CXCursor_OMPTargetEnterDataDirective;
 769     break;
 770   case Stmt::OMPTargetExitDataDirectiveClass:
 771     K = CXCursor_OMPTargetExitDataDirective;
 772     break;
 773   case Stmt::OMPTargetParallelDirectiveClass:
 774     K = CXCursor_OMPTargetParallelDirective;
 775     break;
 776   case Stmt::OMPTargetParallelForDirectiveClass:
 777     K = CXCursor_OMPTargetParallelForDirective;
 778     break;
 779   case Stmt::OMPTargetUpdateDirectiveClass:
 780     K = CXCursor_OMPTargetUpdateDirective;
 781     break;
 782   case Stmt::OMPTeamsDirectiveClass:
 783     K = CXCursor_OMPTeamsDirective;
 784     break;
 785   case Stmt::OMPCancellationPointDirectiveClass:
 786     K = CXCursor_OMPCancellationPointDirective;
 787     break;
 788   case Stmt::OMPCancelDirectiveClass:
 789     K = CXCursor_OMPCancelDirective;
 790     break;
 791   case Stmt::OMPTaskLoopDirectiveClass:
 792     K = CXCursor_OMPTaskLoopDirective;
 793     break;
 794   case Stmt::OMPTaskLoopSimdDirectiveClass:
 795     K = CXCursor_OMPTaskLoopSimdDirective;
 796     break;
 797   case Stmt::OMPMasterTaskLoopDirectiveClass:
 798     K = CXCursor_OMPMasterTaskLoopDirective;
 799     break;
 800   case Stmt::OMPMaskedTaskLoopDirectiveClass:
 801     K = CXCursor_OMPMaskedTaskLoopDirective;
 802     break;
 803   case Stmt::OMPMasterTaskLoopSimdDirectiveClass:
 804     K = CXCursor_OMPMasterTaskLoopSimdDirective;
 805     break;
 806   case Stmt::OMPMaskedTaskLoopSimdDirectiveClass:
 807     K = CXCursor_OMPMaskedTaskLoopSimdDirective;
 808     break;
 809   case Stmt::OMPParallelMasterTaskLoopDirectiveClass:
 810     K = CXCursor_OMPParallelMasterTaskLoopDirective;
 811     break;
 812   case Stmt::OMPParallelMaskedTaskLoopDirectiveClass:
 813     K = CXCursor_OMPParallelMaskedTaskLoopDirective;
 814     break;
 815   case Stmt::OMPParallelMasterTaskLoopSimdDirectiveClass:
 816     K = CXCursor_OMPParallelMasterTaskLoopSimdDirective;
 817     break;
 818   case Stmt::OMPParallelMaskedTaskLoopSimdDirectiveClass:
 819     K = CXCursor_OMPParallelMaskedTaskLoopSimdDirective;
 820     break;
 821   case Stmt::OMPDistributeDirectiveClass:
 822     K = CXCursor_OMPDistributeDirective;
 823     break;
 824   case Stmt::OMPDistributeParallelForDirectiveClass:
 825     K = CXCursor_OMPDistributeParallelForDirective;
 826     break;
 827   case Stmt::OMPDistributeParallelForSimdDirectiveClass:
 828     K = CXCursor_OMPDistributeParallelForSimdDirective;
 829     break;
 830   case Stmt::OMPDistributeSimdDirectiveClass:
 831     K = CXCursor_OMPDistributeSimdDirective;
 832     break;
 833   case Stmt::OMPTargetParallelForSimdDirectiveClass:
 834     K = CXCursor_OMPTargetParallelForSimdDirective;
 835     break;
 836   case Stmt::OMPTargetSimdDirectiveClass:
 837     K = CXCursor_OMPTargetSimdDirective;
 838     break;
 839   case Stmt::OMPTeamsDistributeDirectiveClass:
 840     K = CXCursor_OMPTeamsDistributeDirective;
 841     break;
 842   case Stmt::OMPTeamsDistributeSimdDirectiveClass:
 843     K = CXCursor_OMPTeamsDistributeSimdDirective;
 844     break;
 845   case Stmt::OMPTeamsDistributeParallelForSimdDirectiveClass:
 846     K = CXCursor_OMPTeamsDistributeParallelForSimdDirective;
 847     break;
 848   case Stmt::OMPTeamsDistributeParallelForDirectiveClass:
 849     K = CXCursor_OMPTeamsDistributeParallelForDirective;
 850     break;
 851   case Stmt::OMPTargetTeamsDirectiveClass:
 852     K = CXCursor_OMPTargetTeamsDirective;
 853     break;
 854   case Stmt::OMPTargetTeamsDistributeDirectiveClass:
 855     K = CXCursor_OMPTargetTeamsDistributeDirective;
 856     break;
 857   case Stmt::OMPTargetTeamsDistributeParallelForDirectiveClass:
 858     K = CXCursor_OMPTargetTeamsDistributeParallelForDirective;
 859     break;
 860   case Stmt::OMPTargetTeamsDistributeParallelForSimdDirectiveClass:
 861     K = CXCursor_OMPTargetTeamsDistributeParallelForSimdDirective;
 862     break;
 863   case Stmt::OMPTargetTeamsDistributeSimdDirectiveClass:
 864     K = CXCursor_OMPTargetTeamsDistributeSimdDirective;
 865     break;
 866   case Stmt::OMPInteropDirectiveClass:
 867     K = CXCursor_OMPInteropDirective;
 868     break;
 869   case Stmt::OMPDispatchDirectiveClass:
 870     K = CXCursor_OMPDispatchDirective;
 871     break;
 872   case Stmt::OMPMaskedDirectiveClass:
 873     K = CXCursor_OMPMaskedDirective;
 874     break;
 875   case Stmt::OMPGenericLoopDirectiveClass:
 876     K = CXCursor_OMPGenericLoopDirective;
 877     break;
 878   case Stmt::OMPTeamsGenericLoopDirectiveClass:
 879     K = CXCursor_OMPTeamsGenericLoopDirective;
 880     break;
 881   case Stmt::OMPTargetTeamsGenericLoopDirectiveClass:
 882     K = CXCursor_OMPTargetTeamsGenericLoopDirective;
 883     break;
 884   case Stmt::OMPParallelGenericLoopDirectiveClass:
 885     K = CXCursor_OMPParallelGenericLoopDirective;
 886     break;
 887   case Stmt::OpenACCComputeConstructClass:
 888     K = CXCursor_OpenACCComputeConstruct;
 889     break;
 890   case Stmt::OpenACCLoopConstructClass:
 891     K = CXCursor_OpenACCLoopConstruct;
 892     break;
 893   case Stmt::OpenACCCombinedConstructClass:
 894     K = CXCursor_OpenACCCombinedConstruct;
 895     break;
 896   case Stmt::OpenACCDataConstructClass:
 897     K = CXCursor_OpenACCDataConstruct;
 898     break;
 899   case Stmt::OpenACCEnterDataConstructClass:
 900     K = CXCursor_OpenACCEnterDataConstruct;
 901     break;
 902   case Stmt::OpenACCExitDataConstructClass:
 903     K = CXCursor_OpenACCExitDataConstruct;
 904     break;
 905   case Stmt::OpenACCHostDataConstructClass:
 906     K = CXCursor_OpenACCHostDataConstruct;
 907     break;
 908   case Stmt::OpenACCWaitConstructClass:
 909     K = CXCursor_OpenACCWaitConstruct;
 910     break;
 911   case Stmt::OpenACCInitConstructClass:
 912     K = CXCursor_OpenACCInitConstruct;
 913     break;
 914   case Stmt::OpenACCShutdownConstructClass:
 915     K = CXCursor_OpenACCShutdownConstruct;
 916     break;
 917   case Stmt::OpenACCSetConstructClass:
 918     K = CXCursor_OpenACCSetConstruct;
 919     break;
 920   case Stmt::OpenACCUpdateConstructClass:
 921     K = CXCursor_OpenACCUpdateConstruct;
 922     break;
 923   case Stmt::OMPTargetParallelGenericLoopDirectiveClass:
 924     K = CXCursor_OMPTargetParallelGenericLoopDirective;
 925     break;
 926   case Stmt::BuiltinBitCastExprClass:
 927     K = CXCursor_BuiltinBitCastExpr;
 928     break;
 929   case Stmt::OMPAssumeDirectiveClass:
 930     K = CXCursor_OMPAssumeDirective;
 931     break;
 932   }
 933
 934   CXCursor C = {K, 0, {Parent, S, TU}};
 935   return C;
 936 }
 937
 938 CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
 939                                                SourceLocation Loc,
 940                                                CXTranslationUnit TU) {
 941   assert(Super && TU && "Invalid arguments!");
 942   void *RawLoc = Loc.getPtrEncoding();
 943   CXCursor C = {CXCursor_ObjCSuperClassRef, 0, {Super, RawLoc, TU}};
 944   return C;
 945 }
 946
 947 std::pair<const ObjCInterfaceDecl *, SourceLocation>
 948 cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
 949   assert(C.kind == CXCursor_ObjCSuperClassRef);
 950   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
 951                         SourceLocation::getFromPtrEncoding(C.data[1]));
 952 }
 953
 954 CXCursor cxcursor::MakeCursorObjCProtocolRef(const ObjCProtocolDecl *Proto,
 955                                              SourceLocation Loc,
 956                                              CXTranslationUnit TU) {
 957   assert(Proto && TU && "Invalid arguments!");
 958   void *RawLoc = Loc.getPtrEncoding();
 959   CXCursor C = {CXCursor_ObjCProtocolRef, 0, {Proto, RawLoc, TU}};
 960   return C;
 961 }
 962
 963 std::pair<const ObjCProtocolDecl *, SourceLocation>
 964 cxcursor::getCursorObjCProtocolRef(CXCursor C) {
 965   assert(C.kind == CXCursor_ObjCProtocolRef);
 966   return std::make_pair(static_cast<const ObjCProtocolDecl *>(C.data[0]),
 967                         SourceLocation::getFromPtrEncoding(C.data[1]));
 968 }
 969
 970 CXCursor cxcursor::MakeCursorObjCClassRef(const ObjCInterfaceDecl *Class,
 971                                           SourceLocation Loc,
 972                                           CXTranslationUnit TU) {
 973   // 'Class' can be null for invalid code.
 974   if (!Class)
 975     return MakeCXCursorInvalid(CXCursor_InvalidCode);
 976   assert(TU && "Invalid arguments!");
 977   void *RawLoc = Loc.getPtrEncoding();
 978   CXCursor C = {CXCursor_ObjCClassRef, 0, {Class, RawLoc, TU}};
 979   return C;
 980 }
 981
 982 std::pair<const ObjCInterfaceDecl *, SourceLocation>
 983 cxcursor::getCursorObjCClassRef(CXCursor C) {
 984   assert(C.kind == CXCursor_ObjCClassRef);
 985   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
 986                         SourceLocation::getFromPtrEncoding(C.data[1]));
 987 }
 988
 989 CXCursor cxcursor::MakeCursorTypeRef(const TypeDecl *Type, SourceLocation Loc,
 990                                      CXTranslationUnit TU) {
 991   assert(Type && TU && "Invalid arguments!");
 992   void *RawLoc = Loc.getPtrEncoding();
 993   CXCursor C = {CXCursor_TypeRef, 0, {Type, RawLoc, TU}};
 994   return C;
 995 }
 996
 997 std::pair<const TypeDecl *, SourceLocation>
 998 cxcursor::getCursorTypeRef(CXCursor C) {
 999   assert(C.kind == CXCursor_TypeRef);
1000   return std::make_pair(static_cast<const TypeDecl *>(C.data[0]),
1001                         SourceLocation::getFromPtrEncoding(C.data[1]));
1002 }
1003
1004 CXCursor cxcursor::MakeCursorTemplateRef(const TemplateDecl *Template,
1005                                          SourceLocation Loc,
1006                                          CXTranslationUnit TU) {
1007   assert(Template && TU && "Invalid arguments!");
1008   void *RawLoc = Loc.getPtrEncoding();
1009   CXCursor C = {CXCursor_TemplateRef, 0, {Template, RawLoc, TU}};
1010   return C;
1011 }
1012
1013 std::pair<const TemplateDecl *, SourceLocation>
1014 cxcursor::getCursorTemplateRef(CXCursor C) {
1015   assert(C.kind == CXCursor_TemplateRef);
1016   return std::make_pair(static_cast<const TemplateDecl *>(C.data[0]),
1017                         SourceLocation::getFromPtrEncoding(C.data[1]));
1018 }
1019
1020 CXCursor cxcursor::MakeCursorNamespaceRef(const NamedDecl *NS,
1021                                           SourceLocation Loc,
1022                                           CXTranslationUnit TU) {
1023
1024   assert(NS && (isa<NamespaceDecl>(NS) || isa<NamespaceAliasDecl>(NS)) && TU &&
1025          "Invalid arguments!");
1026   void *RawLoc = Loc.getPtrEncoding();
1027   CXCursor C = {CXCursor_NamespaceRef, 0, {NS, RawLoc, TU}};
1028   return C;
1029 }
1030
1031 std::pair<const NamedDecl *, SourceLocation>
1032 cxcursor::getCursorNamespaceRef(CXCursor C) {
1033   assert(C.kind == CXCursor_NamespaceRef);
1034   return std::make_pair(static_cast<const NamedDecl *>(C.data[0]),
1035                         SourceLocation::getFromPtrEncoding(C.data[1]));
1036 }
1037
1038 CXCursor cxcursor::MakeCursorVariableRef(const VarDecl *Var, SourceLocation Loc,
1039                                          CXTranslationUnit TU) {
1040
1041   assert(Var && TU && "Invalid arguments!");
1042   void *RawLoc = Loc.getPtrEncoding();
1043   CXCursor C = {CXCursor_VariableRef, 0, {Var, RawLoc, TU}};
1044   return C;
1045 }
1046
1047 std::pair<const VarDecl *, SourceLocation>
1048 cxcursor::getCursorVariableRef(CXCursor C) {
1049   assert(C.kind == CXCursor_VariableRef);
1050   return std::make_pair(static_cast<const VarDecl *>(C.data[0]),
1051                         SourceLocation::getFromPtrEncoding(C.data[1]));
1052 }
1053
1054 CXCursor cxcursor::MakeCursorMemberRef(const FieldDecl *Field,
1055                                        SourceLocation Loc,
1056                                        CXTranslationUnit TU) {
1057
1058   assert(Field && TU && "Invalid arguments!");
1059   void *RawLoc = Loc.getPtrEncoding();
1060   CXCursor C = {CXCursor_MemberRef, 0, {Field, RawLoc, TU}};
1061   return C;
1062 }
1063
1064 std::pair<const FieldDecl *, SourceLocation>
1065 cxcursor::getCursorMemberRef(CXCursor C) {
1066   assert(C.kind == CXCursor_MemberRef);
1067   return std::make_pair(static_cast<const FieldDecl *>(C.data[0]),
1068                         SourceLocation::getFromPtrEncoding(C.data[1]));
1069 }
1070
1071 CXCursor cxcursor::MakeCursorCXXBaseSpecifier(const CXXBaseSpecifier *B,
1072                                               CXTranslationUnit TU) {
1073   CXCursor C = {CXCursor_CXXBaseSpecifier, 0, {B, nullptr, TU}};
1074   return C;
1075 }
1076
1077 const CXXBaseSpecifier *cxcursor::getCursorCXXBaseSpecifier(CXCursor C) {
1078   assert(C.kind == CXCursor_CXXBaseSpecifier);
1079   return static_cast<const CXXBaseSpecifier *>(C.data[0]);
1080 }
1081
1082 CXCursor cxcursor::MakePreprocessingDirectiveCursor(SourceRange Range,
1083                                                     CXTranslationUnit TU) {
1084   CXCursor C = {
1085       CXCursor_PreprocessingDirective,
1086       0,
1087       {Range.getBegin().getPtrEncoding(), Range.getEnd().getPtrEncoding(), TU}};
1088   return C;
1089 }
1090
1091 SourceRange cxcursor::getCursorPreprocessingDirective(CXCursor C) {
1092   assert(C.kind == CXCursor_PreprocessingDirective);
1093   SourceRange Range(SourceLocation::getFromPtrEncoding(C.data[0]),
1094                     SourceLocation::getFromPtrEncoding(C.data[1]));
1095   ASTUnit *TU = getCursorASTUnit(C);
1096   return TU->mapRangeFromPreamble(Range);
1097 }
1098
1099 CXCursor cxcursor::MakeMacroDefinitionCursor(const MacroDefinitionRecord *MI,
1100                                              CXTranslationUnit TU) {
1101   CXCursor C = {CXCursor_MacroDefinition, 0, {MI, nullptr, TU}};
1102   return C;
1103 }
1104
1105 const MacroDefinitionRecord *cxcursor::getCursorMacroDefinition(CXCursor C) {
1106   assert(C.kind == CXCursor_MacroDefinition);
1107   return static_cast<const MacroDefinitionRecord *>(C.data[0]);
1108 }
1109
1110 CXCursor cxcursor::MakeMacroExpansionCursor(MacroExpansion *MI,
1111                                             CXTranslationUnit TU) {
1112   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, nullptr, TU}};
1113   return C;
1114 }
1115
1116 CXCursor cxcursor::MakeMacroExpansionCursor(MacroDefinitionRecord *MI,
1117                                             SourceLocation Loc,
1118                                             CXTranslationUnit TU) {
1119   assert(Loc.isValid());
1120   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, Loc.getPtrEncoding(), TU}};
1121   return C;
1122 }
1123
1124 const IdentifierInfo *cxcursor::MacroExpansionCursor::getName() const {
1125   if (isPseudo())
1126     return getAsMacroDefinition()->getName();
1127   return getAsMacroExpansion()->getName();
1128 }
1129 const MacroDefinitionRecord *
1130 cxcursor::MacroExpansionCursor::getDefinition() const {
1131   if (isPseudo())
1132     return getAsMacroDefinition();
1133   return getAsMacroExpansion()->getDefinition();
1134 }
1135 SourceRange cxcursor::MacroExpansionCursor::getSourceRange() const {
1136   if (isPseudo())
1137     return getPseudoLoc();
1138   return getAsMacroExpansion()->getSourceRange();
1139 }
1140
1141 CXCursor cxcursor::MakeInclusionDirectiveCursor(InclusionDirective *ID,
1142                                                 CXTranslationUnit TU) {
1143   CXCursor C = {CXCursor_InclusionDirective, 0, {ID, nullptr, TU}};
1144   return C;
1145 }
1146
1147 const InclusionDirective *cxcursor::getCursorInclusionDirective(CXCursor C) {
1148   assert(C.kind == CXCursor_InclusionDirective);
1149   return static_cast<const InclusionDirective *>(C.data[0]);
1150 }
1151
1152 CXCursor cxcursor::MakeCursorLabelRef(LabelStmt *Label, SourceLocation Loc,
1153                                       CXTranslationUnit TU) {
1154
1155   assert(Label && TU && "Invalid arguments!");
1156   void *RawLoc = Loc.getPtrEncoding();
1157   CXCursor C = {CXCursor_LabelRef, 0, {Label, RawLoc, TU}};
1158   return C;
1159 }
1160
1161 std::pair<const LabelStmt *, SourceLocation>
1162 cxcursor::getCursorLabelRef(CXCursor C) {
1163   assert(C.kind == CXCursor_LabelRef);
1164   return std::make_pair(static_cast<const LabelStmt *>(C.data[0]),
1165                         SourceLocation::getFromPtrEncoding(C.data[1]));
1166 }
1167
1168 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const OverloadExpr *E,
1169                                                CXTranslationUnit TU) {
1170   assert(E && TU && "Invalid arguments!");
1171   OverloadedDeclRefStorage Storage(E);
1172   void *RawLoc = E->getNameLoc().getPtrEncoding();
1173   CXCursor C = {
1174       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1175   return C;
1176 }
1177
1178 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const Decl *D,
1179                                                SourceLocation Loc,
1180                                                CXTranslationUnit TU) {
1181   assert(D && TU && "Invalid arguments!");
1182   void *RawLoc = Loc.getPtrEncoding();
1183   OverloadedDeclRefStorage Storage(D);
1184   CXCursor C = {
1185       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1186   return C;
1187 }
1188
1189 CXCursor cxcursor::MakeCursorOverloadedDeclRef(TemplateName Name,
1190                                                SourceLocation Loc,
1191                                                CXTranslationUnit TU) {
1192   assert(Name.getAsOverloadedTemplate() && TU && "Invalid arguments!");
1193   void *RawLoc = Loc.getPtrEncoding();
1194   OverloadedDeclRefStorage Storage(Name.getAsOverloadedTemplate());
1195   CXCursor C = {
1196       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1197   return C;
1198 }
1199
1200 std::pair<cxcursor::OverloadedDeclRefStorage, SourceLocation>
1201 cxcursor::getCursorOverloadedDeclRef(CXCursor C) {
1202   assert(C.kind == CXCursor_OverloadedDeclRef);
1203   return std::make_pair(OverloadedDeclRefStorage::getFromOpaqueValue(
1204                             const_cast<void *>(C.data[0])),
1205                         SourceLocation::getFromPtrEncoding(C.data[1]));
1206 }
1207
1208 const Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
1209   return static_cast<const Decl *>(Cursor.data[0]);
1210 }
1211
1212 const Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
1213   return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
1214 }
1215
1216 const Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
1217   if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
1218       Cursor.kind == CXCursor_ObjCProtocolRef ||
1219       Cursor.kind == CXCursor_ObjCClassRef)
1220     return nullptr;
1221
1222   return static_cast<const Stmt *>(Cursor.data[1]);
1223 }
1224
1225 const Attr *cxcursor::getCursorAttr(CXCursor Cursor) {
1226   return static_cast<const Attr *>(Cursor.data[1]);
1227 }
1228
1229 ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
1230   return getCursorASTUnit(Cursor)->getASTContext();
1231 }
1232
1233 ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
1234   CXTranslationUnit TU = getCursorTU(Cursor);
1235   if (!TU)
1236     return nullptr;
1237   return cxtu::getASTUnit(TU);
1238 }
1239
1240 CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {
1241   return static_cast<CXTranslationUnit>(const_cast<void *>(Cursor.data[2]));
1242 }
1243
1244 void cxcursor::getOverriddenCursors(CXCursor cursor,
1245                                     SmallVectorImpl<CXCursor> &overridden) {
1246   assert(clang_isDeclaration(cursor.kind));
1247   const NamedDecl *D = dyn_cast_or_null<NamedDecl>(getCursorDecl(cursor));
1248   if (!D)
1249     return;
1250
1251   CXTranslationUnit TU = getCursorTU(cursor);
1252   SmallVector<const NamedDecl *, 8> OverDecls;
1253   D->getASTContext().getOverriddenMethods(D, OverDecls);
1254
1255   for (SmallVectorImpl<const NamedDecl *>::iterator I = OverDecls.begin(),
1256                                                     E = OverDecls.end();
1257        I != E; ++I) {
1258     overridden.push_back(MakeCXCursor(*I, TU));
1259   }
1260 }
1261
1262 std::pair<int, SourceLocation>
1263 cxcursor::getSelectorIdentifierIndexAndLoc(CXCursor cursor) {
1264   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1265     if (cursor.xdata != -1)
1266       return std::make_pair(cursor.xdata,
1267                             cast<ObjCMessageExpr>(getCursorExpr(cursor))
1268                                 ->getSelectorLoc(cursor.xdata));
1269   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1270              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1271     if (cursor.xdata != -1)
1272       return std::make_pair(cursor.xdata,
1273                             cast<ObjCMethodDecl>(getCursorDecl(cursor))
1274                                 ->getSelectorLoc(cursor.xdata));
1275   }
1276
1277   return std::make_pair(-1, SourceLocation());
1278 }
1279
1280 CXCursor cxcursor::getSelectorIdentifierCursor(int SelIdx, CXCursor cursor) {
1281   CXCursor newCursor = cursor;
1282
1283   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1284     if (SelIdx == -1 ||
1285         unsigned(SelIdx) >=
1286             cast<ObjCMessageExpr>(getCursorExpr(cursor))->getNumSelectorLocs())
1287       newCursor.xdata = -1;
1288     else
1289       newCursor.xdata = SelIdx;
1290   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1291              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1292     if (SelIdx == -1 ||
1293         unsigned(SelIdx) >=
1294             cast<ObjCMethodDecl>(getCursorDecl(cursor))->getNumSelectorLocs())
1295       newCursor.xdata = -1;
1296     else
1297       newCursor.xdata = SelIdx;
1298   }
1299
1300   return newCursor;
1301 }
1302
1303 CXCursor cxcursor::getTypeRefCursor(CXCursor cursor) {
1304   if (cursor.kind != CXCursor_CallExpr)
1305     return cursor;
1306
1307   if (cursor.xdata == 0)
1308     return cursor;
1309
1310   const Expr *E = getCursorExpr(cursor);
1311   TypeSourceInfo *Type = nullptr;
1312   if (const CXXUnresolvedConstructExpr *UnCtor =
1313           dyn_cast<CXXUnresolvedConstructExpr>(E)) {
1314     Type = UnCtor->getTypeSourceInfo();
1315   } else if (const CXXTemporaryObjectExpr *Tmp =
1316                  dyn_cast<CXXTemporaryObjectExpr>(E)) {
1317     Type = Tmp->getTypeSourceInfo();
1318   }
1319
1320   if (!Type)
1321     return cursor;
1322
1323   CXTranslationUnit TU = getCursorTU(cursor);
1324   QualType Ty = Type->getType();
1325   TypeLoc TL = Type->getTypeLoc();
1326   SourceLocation Loc = TL.getBeginLoc();
1327
1328   if (const ElaboratedType *ElabT = Ty->getAs<ElaboratedType>()) {
1329     Ty = ElabT->getNamedType();
1330     ElaboratedTypeLoc ElabTL = TL.castAs<ElaboratedTypeLoc>();
1331     Loc = ElabTL.getNamedTypeLoc().getBeginLoc();
1332   }
1333
1334   if (const TypedefType *Typedef = Ty->getAs<TypedefType>())
1335     return MakeCursorTypeRef(Typedef->getDecl(), Loc, TU);
1336   if (const TagType *Tag = Ty->getAs<TagType>())
1337     return MakeCursorTypeRef(Tag->getDecl(), Loc, TU);
1338   if (const TemplateTypeParmType *TemplP = Ty->getAs<TemplateTypeParmType>())
1339     return MakeCursorTypeRef(TemplP->getDecl(), Loc, TU);
1340
1341   return cursor;
1342 }
1343
1344 bool cxcursor::operator==(CXCursor X, CXCursor Y) {
1345   return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
1346          X.data[2] == Y.data[2];
1347 }
1348
1349 // FIXME: Remove once we can model DeclGroups and their appropriate ranges
1350 // properly in the ASTs.
1351 bool cxcursor::isFirstInDeclGroup(CXCursor C) {
1352   assert(clang_isDeclaration(C.kind));
1353   return ((uintptr_t)(C.data[1])) != 0;
1354 }
1355
1356 //===----------------------------------------------------------------------===//
1357 // libclang CXCursor APIs
1358 //===----------------------------------------------------------------------===//
1359
1360 int clang_Cursor_isNull(CXCursor cursor) {
1361   return clang_equalCursors(cursor, clang_getNullCursor());
1362 }
1363
1364 CXTranslationUnit clang_Cursor_getTranslationUnit(CXCursor cursor) {
1365   return getCursorTU(cursor);
1366 }
1367
1368 int clang_Cursor_getNumArguments(CXCursor C) {
1369   if (clang_isDeclaration(C.kind)) {
1370     const Decl *D = cxcursor::getCursorDecl(C);
1371     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D))
1372       return MD->param_size();
1373     if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
1374       return FD->param_size();
1375   }
1376
1377   if (clang_isExpression(C.kind)) {
1378     const Expr *E = cxcursor::getCursorExpr(C);
1379     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1380       return CE->getNumArgs();
1381     }
1382     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1383       return CE->getNumArgs();
1384     }
1385   }
1386
1387   return -1;
1388 }
1389
1390 CXCursor clang_Cursor_getArgument(CXCursor C, unsigned i) {
1391   if (clang_isDeclaration(C.kind)) {
1392     const Decl *D = cxcursor::getCursorDecl(C);
1393     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D)) {
1394       if (i < MD->param_size())
1395         return cxcursor::MakeCXCursor(MD->parameters()[i],
1396                                       cxcursor::getCursorTU(C));
1397     } else if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) {
1398       if (i < FD->param_size())
1399         return cxcursor::MakeCXCursor(FD->parameters()[i],
1400                                       cxcursor::getCursorTU(C));
1401     }
1402   }
1403
1404   if (clang_isExpression(C.kind)) {
1405     const Expr *E = cxcursor::getCursorExpr(C);
1406     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1407       if (i < CE->getNumArgs()) {
1408         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1409                                       cxcursor::getCursorTU(C));
1410       }
1411     }
1412     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1413       if (i < CE->getNumArgs()) {
1414         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1415                                       cxcursor::getCursorTU(C));
1416       }
1417     }
1418   }
1419
1420   return clang_getNullCursor();
1421 }
1422
1423 int clang_Cursor_getNumTemplateArguments(CXCursor C) {
1424   CXCursorKind kind = clang_getCursorKind(C);
1425   if (kind != CXCursor_FunctionDecl && kind != CXCursor_StructDecl &&
1426       kind != CXCursor_ClassDecl &&
1427       kind != CXCursor_ClassTemplatePartialSpecialization) {
1428     return -1;
1429   }
1430
1431   if (const auto *FD =
1432           llvm::dyn_cast_if_present<clang::FunctionDecl>(getCursorDecl(C))) {
1433     const FunctionTemplateSpecializationInfo *SpecInfo =
1434         FD->getTemplateSpecializationInfo();
1435     if (!SpecInfo) {
1436       return -1;
1437     }
1438     return SpecInfo->TemplateArguments->size();
1439   }
1440
1441   if (const auto *SD =
1442           llvm::dyn_cast_if_present<clang::ClassTemplateSpecializationDecl>(
1443               getCursorDecl(C))) {
1444     return SD->getTemplateArgs().size();
1445   }
1446
1447   return -1;
1448 }
1449
1450 enum CXGetTemplateArgumentStatus {
1451   /** The operation completed successfully */
1452   CXGetTemplateArgumentStatus_Success = 0,
1453
1454   /** The specified cursor did not represent a FunctionDecl or
1455       ClassTemplateSpecializationDecl.                         */
1456   CXGetTemplateArgumentStatus_CursorNotCompatibleDecl = -1,
1457
1458   /** The specified cursor was not castable to a FunctionDecl or
1459       ClassTemplateSpecializationDecl.                         */
1460   CXGetTemplateArgumentStatus_BadDeclCast = -2,
1461
1462   /** A NULL FunctionTemplateSpecializationInfo was retrieved. */
1463   CXGetTemplateArgumentStatus_NullTemplSpecInfo = -3,
1464
1465   /** An invalid (OOB) argument index was specified */
1466   CXGetTemplateArgumentStatus_InvalidIndex = -4
1467 };
1468
1469 static int clang_Cursor_getTemplateArgument(CXCursor C, unsigned I,
1470                                             TemplateArgument *TA) {
1471   CXCursorKind kind = clang_getCursorKind(C);
1472   if (kind != CXCursor_FunctionDecl && kind != CXCursor_StructDecl &&
1473       kind != CXCursor_ClassDecl &&
1474       kind != CXCursor_ClassTemplatePartialSpecialization) {
1475     return -1;
1476   }
1477
1478   if (const auto *FD =
1479           llvm::dyn_cast_if_present<clang::FunctionDecl>(getCursorDecl(C))) {
1480
1481     const FunctionTemplateSpecializationInfo *SpecInfo =
1482         FD->getTemplateSpecializationInfo();
1483     if (!SpecInfo) {
1484       return CXGetTemplateArgumentStatus_NullTemplSpecInfo;
1485     }
1486
1487     if (I >= SpecInfo->TemplateArguments->size()) {
1488       return CXGetTemplateArgumentStatus_InvalidIndex;
1489     }
1490
1491     *TA = SpecInfo->TemplateArguments->get(I);
1492     return 0;
1493   }
1494
1495   if (const auto *SD =
1496           llvm::dyn_cast_if_present<clang::ClassTemplateSpecializationDecl>(
1497               getCursorDecl(C))) {
1498     if (I >= SD->getTemplateArgs().size()) {
1499       return CXGetTemplateArgumentStatus_InvalidIndex;
1500     }
1501
1502     *TA = SD->getTemplateArgs()[I];
1503     return 0;
1504   }
1505
1506   return CXGetTemplateArgumentStatus_BadDeclCast;
1507 }
1508
1509 enum CXTemplateArgumentKind clang_Cursor_getTemplateArgumentKind(CXCursor C,
1510                                                                  unsigned I) {
1511   TemplateArgument TA;
1512   if (clang_Cursor_getTemplateArgument(C, I, &TA)) {
1513     return CXTemplateArgumentKind_Invalid;
1514   }
1515
1516   switch (TA.getKind()) {
1517   case TemplateArgument::Null:
1518     return CXTemplateArgumentKind_Null;
1519   case TemplateArgument::Type:
1520     return CXTemplateArgumentKind_Type;
1521   case TemplateArgument::Declaration:
1522     return CXTemplateArgumentKind_Declaration;
1523   case TemplateArgument::NullPtr:
1524     return CXTemplateArgumentKind_NullPtr;
1525   case TemplateArgument::Integral:
1526     return CXTemplateArgumentKind_Integral;
1527   case TemplateArgument::StructuralValue:
1528     // FIXME: Expose these values.
1529     return CXTemplateArgumentKind_Invalid;
1530   case TemplateArgument::Template:
1531     return CXTemplateArgumentKind_Template;
1532   case TemplateArgument::TemplateExpansion:
1533     return CXTemplateArgumentKind_TemplateExpansion;
1534   case TemplateArgument::Expression:
1535     return CXTemplateArgumentKind_Expression;
1536   case TemplateArgument::Pack:
1537     return CXTemplateArgumentKind_Pack;
1538   }
1539
1540   return CXTemplateArgumentKind_Invalid;
1541 }
1542
1543 CXType clang_Cursor_getTemplateArgumentType(CXCursor C, unsigned I) {
1544   TemplateArgument TA;
1545   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1546       CXGetTemplateArgumentStatus_Success) {
1547     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1548   }
1549
1550   if (TA.getKind() != TemplateArgument::Type) {
1551     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1552   }
1553
1554   return cxtype::MakeCXType(TA.getAsType(), getCursorTU(C));
1555 }
1556
1557 long long clang_Cursor_getTemplateArgumentValue(CXCursor C, unsigned I) {
1558   TemplateArgument TA;
1559   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1560       CXGetTemplateArgumentStatus_Success) {
1561     assert(0 && "Unable to retrieve TemplateArgument");
1562     return 0;
1563   }
1564
1565   if (TA.getKind() != TemplateArgument::Integral) {
1566     assert(0 && "Passed template argument is not Integral");
1567     return 0;
1568   }
1569
1570   return TA.getAsIntegral().getSExtValue();
1571 }
1572
1573 unsigned long long clang_Cursor_getTemplateArgumentUnsignedValue(CXCursor C,
1574                                                                  unsigned I) {
1575   TemplateArgument TA;
1576   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1577       CXGetTemplateArgumentStatus_Success) {
1578     assert(0 && "Unable to retrieve TemplateArgument");
1579     return 0;
1580   }
1581
1582   if (TA.getKind() != TemplateArgument::Integral) {
1583     assert(0 && "Passed template argument is not Integral");
1584     return 0;
1585   }
1586
1587   return TA.getAsIntegral().getZExtValue();
1588 }
1589
1590 //===----------------------------------------------------------------------===//
1591 // CXCursorSet.
1592 //===----------------------------------------------------------------------===//
1593
1594 typedef llvm::DenseMap<CXCursor, unsigned> CXCursorSet_Impl;
1595
1596 static inline CXCursorSet packCXCursorSet(CXCursorSet_Impl *setImpl) {
1597   return (CXCursorSet)setImpl;
1598 }
1599 static inline CXCursorSet_Impl *unpackCXCursorSet(CXCursorSet set) {
1600   return (CXCursorSet_Impl *)set;
1601 }
1602 namespace llvm {
1603 template <> struct DenseMapInfo<CXCursor> {
1604 public:
1605   static inline CXCursor getEmptyKey() {
1606     return MakeCXCursorInvalid(CXCursor_InvalidFile);
1607   }
1608   static inline CXCursor getTombstoneKey() {
1609     return MakeCXCursorInvalid(CXCursor_NoDeclFound);
1610   }
1611   static inline unsigned getHashValue(const CXCursor &cursor) {
1612     return llvm::DenseMapInfo<std::pair<const void *, const void *>>::
1613         getHashValue(std::make_pair(cursor.data[0], cursor.data[1]));
1614   }
1615   static inline bool isEqual(const CXCursor &x, const CXCursor &y) {
1616     return x.kind == y.kind && x.data[0] == y.data[0] && x.data[1] == y.data[1];
1617   }
1618 };
1619 } // namespace llvm
1620
1621 CXCursorSet clang_createCXCursorSet() {
1622   return packCXCursorSet(new CXCursorSet_Impl());
1623 }
1624
1625 void clang_disposeCXCursorSet(CXCursorSet set) {
1626   delete unpackCXCursorSet(set);
1627 }
1628
1629 unsigned clang_CXCursorSet_contains(CXCursorSet set, CXCursor cursor) {
1630   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1631   if (!setImpl)
1632     return 0;
1633   return setImpl->find(cursor) != setImpl->end();
1634 }
1635
1636 unsigned clang_CXCursorSet_insert(CXCursorSet set, CXCursor cursor) {
1637   // Do not insert invalid cursors into the set.
1638   if (cursor.kind >= CXCursor_FirstInvalid &&
1639       cursor.kind <= CXCursor_LastInvalid)
1640     return 1;
1641
1642   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1643   if (!setImpl)
1644     return 1;
1645   unsigned &entry = (*setImpl)[cursor];
1646   unsigned flag = entry == 0 ? 1 : 0;
1647   entry = 1;
1648   return flag;
1649 }
1650
1651 CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
1652   enum CXCursorKind kind = clang_getCursorKind(cursor);
1653   if (clang_isDeclaration(kind)) {
1654     const Decl *decl = getCursorDecl(cursor);
1655     if (const NamedDecl *namedDecl = dyn_cast_or_null<NamedDecl>(decl)) {
1656       ASTUnit *unit = getCursorASTUnit(cursor);
1657       CodeCompletionResult Result(namedDecl, CCP_Declaration);
1658       CodeCompletionString *String = Result.CreateCodeCompletionString(
1659           unit->getASTContext(), unit->getPreprocessor(),
1660           CodeCompletionContext::CCC_Other,
1661           unit->getCodeCompletionTUInfo().getAllocator(),
1662           unit->getCodeCompletionTUInfo(), true);
1663       return String;
1664     }
1665   } else if (kind == CXCursor_MacroDefinition) {
1666     const MacroDefinitionRecord *definition = getCursorMacroDefinition(cursor);
1667     const IdentifierInfo *Macro = definition->getName();
1668     ASTUnit *unit = getCursorASTUnit(cursor);
1669     CodeCompletionResult Result(
1670         Macro,
1671         unit->getPreprocessor().getMacroDefinition(Macro).getMacroInfo());
1672     CodeCompletionString *String = Result.CreateCodeCompletionString(
1673         unit->getASTContext(), unit->getPreprocessor(),
1674         CodeCompletionContext::CCC_Other,
1675         unit->getCodeCompletionTUInfo().getAllocator(),
1676         unit->getCodeCompletionTUInfo(), false);
1677     return String;
1678   }
1679   return nullptr;
1680 }
1681
1682 namespace {
1683 struct OverridenCursorsPool {
1684   typedef SmallVector<CXCursor, 2> CursorVec;
1685   std::vector<CursorVec *> AllCursors;
1686   std::vector<CursorVec *> AvailableCursors;
1687
1688   ~OverridenCursorsPool() {
1689     for (std::vector<CursorVec *>::iterator I = AllCursors.begin(),
1690                                             E = AllCursors.end();
1691          I != E; ++I) {
1692       delete *I;
1693     }
1694   }
1695 };
1696 } // namespace
1697
1698 void *cxcursor::createOverridenCXCursorsPool() {
1699   return new OverridenCursorsPool();
1700 }
1701
1702 void cxcursor::disposeOverridenCXCursorsPool(void *pool) {
1703   delete static_cast<OverridenCursorsPool *>(pool);
1704 }
1705
1706 void clang_getOverriddenCursors(CXCursor cursor, CXCursor **overridden,
1707                                 unsigned *num_overridden) {
1708   if (overridden)
1709     *overridden = nullptr;
1710   if (num_overridden)
1711     *num_overridden = 0;
1712
1713   CXTranslationUnit TU = cxcursor::getCursorTU(cursor);
1714
1715   if (!overridden || !num_overridden || !TU)
1716     return;
1717
1718   if (!clang_isDeclaration(cursor.kind))
1719     return;
1720
1721   OverridenCursorsPool &pool =
1722       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1723
1724   OverridenCursorsPool::CursorVec *Vec = nullptr;
1725
1726   if (!pool.AvailableCursors.empty()) {
1727     Vec = pool.AvailableCursors.back();
1728     pool.AvailableCursors.pop_back();
1729   } else {
1730     Vec = new OverridenCursorsPool::CursorVec();
1731     pool.AllCursors.push_back(Vec);
1732   }
1733
1734   // Clear out the vector, but don't free the memory contents.  This
1735   // reduces malloc() traffic.
1736   Vec->clear();
1737
1738   // Use the first entry to contain a back reference to the vector.
1739   // This is a complete hack.
1740   CXCursor backRefCursor = MakeCXCursorInvalid(CXCursor_InvalidFile, TU);
1741   backRefCursor.data[0] = Vec;
1742   assert(cxcursor::getCursorTU(backRefCursor) == TU);
1743   Vec->push_back(backRefCursor);
1744
1745   // Get the overridden cursors.
1746   cxcursor::getOverriddenCursors(cursor, *Vec);
1747
1748   // Did we get any overridden cursors?  If not, return Vec to the pool
1749   // of available cursor vectors.
1750   if (Vec->size() == 1) {
1751     pool.AvailableCursors.push_back(Vec);
1752     return;
1753   }
1754
1755   // Now tell the caller about the overridden cursors.
1756   assert(Vec->size() > 1);
1757   *overridden = &((*Vec)[1]);
1758   *num_overridden = Vec->size() - 1;
1759 }
1760
1761 void clang_disposeOverriddenCursors(CXCursor *overridden) {
1762   if (!overridden)
1763     return;
1764
1765   // Use pointer arithmetic to get back the first faux entry
1766   // which has a back-reference to the TU and the vector.
1767   --overridden;
1768   OverridenCursorsPool::CursorVec *Vec =
1769       static_cast<OverridenCursorsPool::CursorVec *>(
1770           const_cast<void *>(overridden->data[0]));
1771   CXTranslationUnit TU = getCursorTU(*overridden);
1772
1773   assert(Vec && TU);
1774
1775   OverridenCursorsPool &pool =
1776       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1777
1778   pool.AvailableCursors.push_back(Vec);
1779 }
1780
1781 int clang_Cursor_isDynamicCall(CXCursor C) {
1782   const Expr *E = nullptr;
1783   if (clang_isExpression(C.kind))
1784     E = getCursorExpr(C);
1785   if (!E)
1786     return 0;
1787
1788   if (const ObjCMessageExpr *MsgE = dyn_cast<ObjCMessageExpr>(E)) {
1789     if (MsgE->getReceiverKind() != ObjCMessageExpr::Instance)
1790       return false;
1791     if (auto *RecE = dyn_cast<ObjCMessageExpr>(
1792             MsgE->getInstanceReceiver()->IgnoreParenCasts())) {
1793       if (RecE->getMethodFamily() == OMF_alloc)
1794         return false;
1795     }
1796     return true;
1797   }
1798
1799   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1800     return !PropRefE->isSuperReceiver();
1801   }
1802
1803   const MemberExpr *ME = nullptr;
1804   if (isa<MemberExpr>(E))
1805     ME = cast<MemberExpr>(E);
1806   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1807     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1808
1809   if (ME) {
1810     if (const CXXMethodDecl *MD =
1811             dyn_cast_or_null<CXXMethodDecl>(ME->getMemberDecl()))
1812       return MD->isVirtual() &&
1813              ME->performsVirtualDispatch(
1814                  cxcursor::getCursorContext(C).getLangOpts());
1815   }
1816
1817   return 0;
1818 }
1819
1820 CXType clang_Cursor_getReceiverType(CXCursor C) {
1821   CXTranslationUnit TU = cxcursor::getCursorTU(C);
1822   const Expr *E = nullptr;
1823   if (clang_isExpression(C.kind))
1824     E = getCursorExpr(C);
1825
1826   if (const ObjCMessageExpr *MsgE = dyn_cast_or_null<ObjCMessageExpr>(E))
1827     return cxtype::MakeCXType(MsgE->getReceiverType(), TU);
1828
1829   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1830     return cxtype::MakeCXType(
1831         PropRefE->getReceiverType(cxcursor::getCursorContext(C)), TU);
1832   }
1833
1834   const MemberExpr *ME = nullptr;
1835   if (isa<MemberExpr>(E))
1836     ME = cast<MemberExpr>(E);
1837   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1838     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1839
1840   if (ME) {
1841     if (isa_and_nonnull<CXXMethodDecl>(ME->getMemberDecl())) {
1842       auto receiverTy = ME->getBase()->IgnoreImpCasts()->getType();
1843       return cxtype::MakeCXType(receiverTy, TU);
1844     }
1845   }
1846
1847   return cxtype::MakeCXType(QualType(), TU);
1848 }