/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp

Bug Summary

File:	clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
Warning:	line 7509, column 45 Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name RewriteModernObjC.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-11/lib/clang/11.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/tools/clang/lib/Frontend/Rewrite -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/include -I /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/llvm/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-11/lib/clang/11.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/build-llvm/tools/clang/lib/Frontend/Rewrite -fdebug-prefix-map=/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2020-03-09-184146-41876-1 -x c++ /build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp

/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp

→

1//===-- RewriteModernObjC.cpp - Playground for the code rewriter ----------===//
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// Hacks and fun related to the code rewriter.
10//
11//===----------------------------------------------------------------------===//

13#include "clang/Rewrite/Frontend/ASTConsumers.h"
14#include "clang/AST/AST.h"
15#include "clang/AST/ASTConsumer.h"
16#include "clang/AST/Attr.h"
17#include "clang/AST/ParentMap.h"
18#include "clang/Basic/CharInfo.h"
19#include "clang/Basic/Diagnostic.h"
20#include "clang/Basic/IdentifierTable.h"
21#include "clang/Basic/SourceManager.h"
22#include "clang/Basic/TargetInfo.h"
23#include "clang/Config/config.h"
24#include "clang/Lex/Lexer.h"
25#include "clang/Rewrite/Core/Rewriter.h"
26#include "llvm/ADT/DenseSet.h"
27#include "llvm/ADT/SmallPtrSet.h"
28#include "llvm/ADT/StringExtras.h"
29#include "llvm/Support/MemoryBuffer.h"
30#include "llvm/Support/raw_ostream.h"
31#include <memory>

33#if CLANG_ENABLE_OBJC_REWRITER1

35using namespace clang;
36using llvm::utostr;

38namespace {
class RewriteModernObjC : public ASTConsumer {
protected:

  enum {
    BLOCK_FIELD_IS_OBJECT   =  3,  /* id, NSObject, __attribute__((NSObject)),
                                      block, ... */
    BLOCK_FIELD_IS_BLOCK    =  7,  /* a block variable */
    BLOCK_FIELD_IS_BYREF    =  8,  /* the on stack structure holding the
                                      __block variable */
    BLOCK_FIELD_IS_WEAK     = 16,  /* declared __weak, only used in byref copy
                                      helpers */
    BLOCK_BYREF_CALLER      = 128, /* called from __block (byref) copy/dispose
                                      support routines */
    BLOCK_BYREF_CURRENT_MAX = 256
  };

  enum {
    BLOCK_NEEDS_FREE =        (1 << 24),
    BLOCK_HAS_COPY_DISPOSE =  (1 << 25),
    BLOCK_HAS_CXX_OBJ =       (1 << 26),
    BLOCK_IS_GC =             (1 << 27),
    BLOCK_IS_GLOBAL =         (1 << 28),
    BLOCK_HAS_DESCRIPTOR =    (1 << 29)
  };

  Rewriter Rewrite;
  DiagnosticsEngine &Diags;
  const LangOptions &LangOpts;
  ASTContext *Context;
  SourceManager *SM;
  TranslationUnitDecl *TUDecl;
  FileID MainFileID;
  const char *MainFileStart, *MainFileEnd;
  Stmt *CurrentBody;
  ParentMap *PropParentMap; // created lazily.
  std::string InFileName;
  std::unique_ptr<raw_ostream> OutFile;
  std::string Preamble;

  TypeDecl *ProtocolTypeDecl;
  VarDecl *GlobalVarDecl;
  Expr *GlobalConstructionExp;
  unsigned RewriteFailedDiag;
  unsigned GlobalBlockRewriteFailedDiag;
  // ObjC string constant support.
  unsigned NumObjCStringLiterals;
  VarDecl *ConstantStringClassReference;
  RecordDecl *NSStringRecord;

  // ObjC foreach break/continue generation support.
  int BcLabelCount;

  unsigned TryFinallyContainsReturnDiag;
  // Needed for super.
  ObjCMethodDecl *CurMethodDef;
  RecordDecl *SuperStructDecl;
  RecordDecl *ConstantStringDecl;

  FunctionDecl *MsgSendFunctionDecl;
  FunctionDecl *MsgSendSuperFunctionDecl;
  FunctionDecl *MsgSendStretFunctionDecl;
  FunctionDecl *MsgSendSuperStretFunctionDecl;
  FunctionDecl *MsgSendFpretFunctionDecl;
  FunctionDecl *GetClassFunctionDecl;
  FunctionDecl *GetMetaClassFunctionDecl;
  FunctionDecl *GetSuperClassFunctionDecl;
  FunctionDecl *SelGetUidFunctionDecl;
  FunctionDecl *CFStringFunctionDecl;
  FunctionDecl *SuperConstructorFunctionDecl;
  FunctionDecl *CurFunctionDef;

  /* Misc. containers needed for meta-data rewrite. */
  SmallVector<ObjCImplementationDecl *, 8> ClassImplementation;
  SmallVector<ObjCCategoryImplDecl *, 8> CategoryImplementation;
  llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCSynthesizedStructs;
  llvm::SmallPtrSet<ObjCProtocolDecl*, 8> ObjCSynthesizedProtocols;
  llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCWrittenInterfaces;
  llvm::SmallPtrSet<TagDecl*, 32> GlobalDefinedTags;
  SmallVector<ObjCInterfaceDecl*, 32> ObjCInterfacesSeen;
  /// DefinedNonLazyClasses - List of defined "non-lazy" classes.
  SmallVector<ObjCInterfaceDecl*, 8> DefinedNonLazyClasses;

  /// DefinedNonLazyCategories - List of defined "non-lazy" categories.
  SmallVector<ObjCCategoryDecl *, 8> DefinedNonLazyCategories;

  SmallVector<Stmt *, 32> Stmts;
  SmallVector<int, 8> ObjCBcLabelNo;
  // Remember all the @protocol(<expr>) expressions.
  llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ProtocolExprDecls;

  llvm::DenseSet<uint64_t> CopyDestroyCache;

  // Block expressions.
  SmallVector<BlockExpr *, 32> Blocks;
  SmallVector<int, 32> InnerDeclRefsCount;
  SmallVector<DeclRefExpr *, 32> InnerDeclRefs;

  SmallVector<DeclRefExpr *, 32> BlockDeclRefs;

  // Block related declarations.
  SmallVector<ValueDecl *, 8> BlockByCopyDecls;
  llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDeclsPtrSet;
  SmallVector<ValueDecl *, 8> BlockByRefDecls;
  llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDeclsPtrSet;
  llvm::DenseMap<ValueDecl *, unsigned> BlockByRefDeclNo;
  llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls;
  llvm::SmallPtrSet<VarDecl *, 8> ImportedLocalExternalDecls;

  llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs;
  llvm::DenseMap<ObjCInterfaceDecl *,
                  llvm::SmallSetVector<ObjCIvarDecl *, 8> > ReferencedIvars;

  // ivar bitfield grouping containers
  llvm::DenseSet<const ObjCInterfaceDecl *> ObjCInterefaceHasBitfieldGroups;
  llvm::DenseMap<const ObjCIvarDecl* , unsigned> IvarGroupNumber;
  // This container maps an <class, group number for ivar> tuple to the type
  // of the struct where the bitfield belongs.
  llvm::DenseMap<std::pair<const ObjCInterfaceDecl*, unsigned>, QualType> GroupRecordType;
  SmallVector<FunctionDecl*, 32> FunctionDefinitionsSeen;

  // This maps an original source AST to it's rewritten form. This allows
  // us to avoid rewriting the same node twice (which is very uncommon).
  // This is needed to support some of the exotic property rewriting.
  llvm::DenseMap<Stmt *, Stmt *> ReplacedNodes;

  // Needed for header files being rewritten
  bool IsHeader;
  bool SilenceRewriteMacroWarning;
  bool GenerateLineInfo;
  bool objc_impl_method;

  bool DisableReplaceStmt;
  class DisableReplaceStmtScope {
    RewriteModernObjC &R;
    bool SavedValue;

  public:
    DisableReplaceStmtScope(RewriteModernObjC &R)
      : R(R), SavedValue(R.DisableReplaceStmt) {
      R.DisableReplaceStmt = true;
    }
    ~DisableReplaceStmtScope() {
      R.DisableReplaceStmt = SavedValue;
    }
  };
  void InitializeCommon(ASTContext &context);

public:
  llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames;

  // Top Level Driver code.
  bool HandleTopLevelDecl(DeclGroupRef D) override {
    for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
      if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(*I)) {
        if (!Class->isThisDeclarationADefinition()) {
          RewriteForwardClassDecl(D);
          break;
        } else {
          // Keep track of all interface declarations seen.
          ObjCInterfacesSeen.push_back(Class);
          break;
        }
      }

      if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(*I)) {
        if (!Proto->isThisDeclarationADefinition()) {
          RewriteForwardProtocolDecl(D);
          break;
        }
      }

      if (FunctionDecl *FDecl = dyn_cast<FunctionDecl>(*I)) {
        // Under modern abi, we cannot translate body of the function
        // yet until all class extensions and its implementation is seen.
        // This is because they may introduce new bitfields which must go
        // into their grouping struct.
        if (FDecl->isThisDeclarationADefinition() &&
            // Not c functions defined inside an objc container.
            !FDecl->isTopLevelDeclInObjCContainer()) {
          FunctionDefinitionsSeen.push_back(FDecl);
          break;
        }
      }
      HandleTopLevelSingleDecl(*I);
    }
    return true;
  }

  void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override {
    for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
      if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(*I)) {
        if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
          RewriteBlockPointerDecl(TD);
        else if (TD->getUnderlyingType()->isFunctionPointerType())
          CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
        else
          RewriteObjCQualifiedInterfaceTypes(TD);
      }
    }
  }

  void HandleTopLevelSingleDecl(Decl *D);
  void HandleDeclInMainFile(Decl *D);
  RewriteModernObjC(std::string inFile, std::unique_ptr<raw_ostream> OS,
                    DiagnosticsEngine &D, const LangOptions &LOpts,
                    bool silenceMacroWarn, bool LineInfo);

  ~RewriteModernObjC() override {}

  void HandleTranslationUnit(ASTContext &C) override;

  void ReplaceStmt(Stmt *Old, Stmt *New) {
    ReplaceStmtWithRange(Old, New, Old->getSourceRange());
  }

  void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
    assert(Old != nullptr && New != nullptr && "Expected non-null Stmt's")((Old != nullptr && New != nullptr && "Expected non-null Stmt's"
) ? static_cast<void> (0) : __assert_fail ("Old != nullptr && New != nullptr && \"Expected non-null Stmt's\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 255, __PRETTY_FUNCTION__));

    Stmt *ReplacingStmt = ReplacedNodes[Old];
    if (ReplacingStmt)
      return; // We can't rewrite the same node twice.

    if (DisableReplaceStmt)
      return;

    // Measure the old text.
    int Size = Rewrite.getRangeSize(SrcRange);
    if (Size == -1) {
      Diags.Report(Context->getFullLoc(Old->getBeginLoc()), RewriteFailedDiag)
          << Old->getSourceRange();
      return;
    }
    // Get the new text.
    std::string SStr;
    llvm::raw_string_ostream S(SStr);
    New->printPretty(S, nullptr, PrintingPolicy(LangOpts));
    const std::string &Str = S.str();

    // If replacement succeeded or warning disabled return with no warning.
    if (!Rewrite.ReplaceText(SrcRange.getBegin(), Size, Str)) {
      ReplacedNodes[Old] = New;
      return;
    }
    if (SilenceRewriteMacroWarning)
      return;
    Diags.Report(Context->getFullLoc(Old->getBeginLoc()), RewriteFailedDiag)
        << Old->getSourceRange();
  }

  void InsertText(SourceLocation Loc, StringRef Str,
                  bool InsertAfter = true) {
    // If insertion succeeded or warning disabled return with no warning.
    if (!Rewrite.InsertText(Loc, Str, InsertAfter) ||
        SilenceRewriteMacroWarning)
      return;

    Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag);
  }

  void ReplaceText(SourceLocation Start, unsigned OrigLength,
                   StringRef Str) {
    // If removal succeeded or warning disabled return with no warning.
    if (!Rewrite.ReplaceText(Start, OrigLength, Str) ||
        SilenceRewriteMacroWarning)
      return;

    Diags.Report(Context->getFullLoc(Start), RewriteFailedDiag);
  }

  // Syntactic Rewriting.
  void RewriteRecordBody(RecordDecl *RD);
  void RewriteInclude();
  void RewriteLineDirective(const Decl *D);
  void ConvertSourceLocationToLineDirective(SourceLocation Loc,
                                            std::string &LineString);
  void RewriteForwardClassDecl(DeclGroupRef D);
  void RewriteForwardClassDecl(const SmallVectorImpl<Decl *> &DG);
  void RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
                                   const std::string &typedefString);
  void RewriteImplementations();
  void RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
                               ObjCImplementationDecl *IMD,
                               ObjCCategoryImplDecl *CID);
  void RewriteInterfaceDecl(ObjCInterfaceDecl *Dcl);
  void RewriteImplementationDecl(Decl *Dcl);
  void RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
                             ObjCMethodDecl *MDecl, std::string &ResultStr);
  void RewriteTypeIntoString(QualType T, std::string &ResultStr,
                             const FunctionType *&FPRetType);
  void RewriteByRefString(std::string &ResultStr, const std::string &Name,
                          ValueDecl *VD, bool def=false);
  void RewriteCategoryDecl(ObjCCategoryDecl *Dcl);
  void RewriteProtocolDecl(ObjCProtocolDecl *Dcl);
  void RewriteForwardProtocolDecl(DeclGroupRef D);
  void RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG);
  void RewriteMethodDeclaration(ObjCMethodDecl *Method);
  void RewriteProperty(ObjCPropertyDecl *prop);
  void RewriteFunctionDecl(FunctionDecl *FD);
  void RewriteBlockPointerType(std::string& Str, QualType Type);
  void RewriteBlockPointerTypeVariable(std::string& Str, ValueDecl *VD);
  void RewriteBlockLiteralFunctionDecl(FunctionDecl *FD);
  void RewriteObjCQualifiedInterfaceTypes(Decl *Dcl);
  void RewriteTypeOfDecl(VarDecl *VD);
  void RewriteObjCQualifiedInterfaceTypes(Expr *E);

  std::string getIvarAccessString(ObjCIvarDecl *D);

  // Expression Rewriting.
  Stmt *RewriteFunctionBodyOrGlobalInitializer(Stmt *S);
  Stmt *RewriteAtEncode(ObjCEncodeExpr *Exp);
  Stmt *RewritePropertyOrImplicitGetter(PseudoObjectExpr *Pseudo);
  Stmt *RewritePropertyOrImplicitSetter(PseudoObjectExpr *Pseudo);
  Stmt *RewriteAtSelector(ObjCSelectorExpr *Exp);
  Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp);
  Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp);
  Stmt *RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp);
  Stmt *RewriteObjCBoxedExpr(ObjCBoxedExpr *Exp);
  Stmt *RewriteObjCArrayLiteralExpr(ObjCArrayLiteral *Exp);
  Stmt *RewriteObjCDictionaryLiteralExpr(ObjCDictionaryLiteral *Exp);
  Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
  Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
  Stmt *RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt  *S);
  Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
  Stmt *RewriteObjCThrowStmt(ObjCAtThrowStmt *S);
  Stmt *RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
                                     SourceLocation OrigEnd);
  Stmt *RewriteBreakStmt(BreakStmt *S);
  Stmt *RewriteContinueStmt(ContinueStmt *S);
  void RewriteCastExpr(CStyleCastExpr *CE);
  void RewriteImplicitCastObjCExpr(CastExpr *IE);

  // Computes ivar bitfield group no.
  unsigned ObjCIvarBitfieldGroupNo(ObjCIvarDecl *IV);
  // Names field decl. for ivar bitfield group.
  void ObjCIvarBitfieldGroupDecl(ObjCIvarDecl *IV, std::string &Result);
  // Names struct type for ivar bitfield group.
  void ObjCIvarBitfieldGroupType(ObjCIvarDecl *IV, std::string &Result);
  // Names symbol for ivar bitfield group field offset.
  void ObjCIvarBitfieldGroupOffset(ObjCIvarDecl *IV, std::string &Result);
  // Given an ivar bitfield, it builds (or finds) its group record type.
  QualType GetGroupRecordTypeForObjCIvarBitfield(ObjCIvarDecl *IV);
  QualType SynthesizeBitfieldGroupStructType(
                                  ObjCIvarDecl *IV,
                                  SmallVectorImpl<ObjCIvarDecl *> &IVars);

  // Block rewriting.
  void RewriteBlocksInFunctionProtoType(QualType funcType, NamedDecl *D);

  // Block specific rewrite rules.
  void RewriteBlockPointerDecl(NamedDecl *VD);
  void RewriteByRefVar(VarDecl *VD, bool firstDecl, bool lastDecl);
  Stmt *RewriteBlockDeclRefExpr(DeclRefExpr *VD);
  Stmt *RewriteLocalVariableExternalStorage(DeclRefExpr *DRE);
  void RewriteBlockPointerFunctionArgs(FunctionDecl *FD);

  void RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
                                    std::string &Result);

  void RewriteObjCFieldDecl(FieldDecl *fieldDecl, std::string &Result);
  bool IsTagDefinedInsideClass(ObjCContainerDecl *IDecl, TagDecl *Tag,
                               bool &IsNamedDefinition);
  void RewriteLocallyDefinedNamedAggregates(FieldDecl *fieldDecl,
                                            std::string &Result);

  bool RewriteObjCFieldDeclType(QualType &Type, std::string &Result);

  void RewriteIvarOffsetSymbols(ObjCInterfaceDecl *CDecl,
                                std::string &Result);

  void Initialize(ASTContext &context) override;

  // Misc. AST transformation routines. Sometimes they end up calling
  // rewriting routines on the new ASTs.
  CallExpr *SynthesizeCallToFunctionDecl(FunctionDecl *FD,
                                         ArrayRef<Expr *> Args,
                                         SourceLocation StartLoc=SourceLocation(),
                                         SourceLocation EndLoc=SourceLocation());

  Expr *SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
                                      QualType returnType,
                                      SmallVectorImpl<QualType> &ArgTypes,
                                      SmallVectorImpl<Expr*> &MsgExprs,
                                      ObjCMethodDecl *Method);

  Stmt *SynthMessageExpr(ObjCMessageExpr *Exp,
                         SourceLocation StartLoc=SourceLocation(),
                         SourceLocation EndLoc=SourceLocation());

  void SynthCountByEnumWithState(std::string &buf);
  void SynthMsgSendFunctionDecl();
  void SynthMsgSendSuperFunctionDecl();
  void SynthMsgSendStretFunctionDecl();
  void SynthMsgSendFpretFunctionDecl();
  void SynthMsgSendSuperStretFunctionDecl();
  void SynthGetClassFunctionDecl();
  void SynthGetMetaClassFunctionDecl();
  void SynthGetSuperClassFunctionDecl();
  void SynthSelGetUidFunctionDecl();
  void SynthSuperConstructorFunctionDecl();

  // Rewriting metadata
  template<typename MethodIterator>
  void RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
                                  MethodIterator MethodEnd,
                                  bool IsInstanceMethod,
                                  StringRef prefix,
                                  StringRef ClassName,
                                  std::string &Result);
  void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol,
                                   std::string &Result);
  void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
                                        std::string &Result);
  void RewriteClassSetupInitHook(std::string &Result);

  void RewriteMetaDataIntoBuffer(std::string &Result);
  void WriteImageInfo(std::string &Result);
  void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
                                           std::string &Result);
  void RewriteCategorySetupInitHook(std::string &Result);

  // Rewriting ivar
  void RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
                                            std::string &Result);
  Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV);


  std::string SynthesizeByrefCopyDestroyHelper(VarDecl *VD, int flag);
  std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
                                    StringRef funcName, std::string Tag);
  std::string SynthesizeBlockFunc(BlockExpr *CE, int i,
                                    StringRef funcName, std::string Tag);
  std::string SynthesizeBlockImpl(BlockExpr *CE,
                                  std::string Tag, std::string Desc);
  std::string SynthesizeBlockDescriptor(std::string DescTag,
                                        std::string ImplTag,
                                        int i, StringRef funcName,
                                        unsigned hasCopy);
  Stmt *SynthesizeBlockCall(CallExpr *Exp, const Expr* BlockExp);
  void SynthesizeBlockLiterals(SourceLocation FunLocStart,
                               StringRef FunName);
  FunctionDecl *SynthBlockInitFunctionDecl(StringRef name);
  Stmt *SynthBlockInitExpr(BlockExpr *Exp,
                    const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs);

  // Misc. helper routines.
  QualType getProtocolType();
  void WarnAboutReturnGotoStmts(Stmt *S);
  void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND);
  void InsertBlockLiteralsWithinFunction(FunctionDecl *FD);
  void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD);

  bool IsDeclStmtInForeachHeader(DeclStmt *DS);
  void CollectBlockDeclRefInfo(BlockExpr *Exp);
  void GetBlockDeclRefExprs(Stmt *S);
  void GetInnerBlockDeclRefExprs(Stmt *S,
              SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
              llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts);

  // We avoid calling Type::isBlockPointerType(), since it operates on the
  // canonical type. We only care if the top-level type is a closure pointer.
  bool isTopLevelBlockPointerType(QualType T) {
    return isa<BlockPointerType>(T);
  }

  /// convertBlockPointerToFunctionPointer - Converts a block-pointer type
  /// to a function pointer type and upon success, returns true; false
  /// otherwise.
  bool convertBlockPointerToFunctionPointer(QualType &T) {
    if (isTopLevelBlockPointerType(T)) {
      const auto *BPT = T->castAs<BlockPointerType>();
      T = Context->getPointerType(BPT->getPointeeType());
      return true;
    }
    return false;
  }

  bool convertObjCTypeToCStyleType(QualType &T);

  bool needToScanForQualifiers(QualType T);
  QualType getSuperStructType();
  QualType getConstantStringStructType();
  QualType convertFunctionTypeOfBlocks(const FunctionType *FT);

  void convertToUnqualifiedObjCType(QualType &T) {
    if (T->isObjCQualifiedIdType()) {
      bool isConst = T.isConstQualified();
      T = isConst ? Context->getObjCIdType().withConst()
                  : Context->getObjCIdType();
    }
    else if (T->isObjCQualifiedClassType())
      T = Context->getObjCClassType();
    else if (T->isObjCObjectPointerType() &&
             T->getPointeeType()->isObjCQualifiedInterfaceType()) {
      if (const ObjCObjectPointerType * OBJPT =
            T->getAsObjCInterfacePointerType()) {
        const ObjCInterfaceType *IFaceT = OBJPT->getInterfaceType();
        T = QualType(IFaceT, 0);
        T = Context->getPointerType(T);
      }
   }
  }

  // FIXME: This predicate seems like it would be useful to add to ASTContext.
  bool isObjCType(QualType T) {
    if (!LangOpts.ObjC)
      return false;

    QualType OCT = Context->getCanonicalType(T).getUnqualifiedType();

    if (OCT == Context->getCanonicalType(Context->getObjCIdType()) ||
        OCT == Context->getCanonicalType(Context->getObjCClassType()))
      return true;

    if (const PointerType *PT = OCT->getAs<PointerType>()) {
      if (isa<ObjCInterfaceType>(PT->getPointeeType()) ||
          PT->getPointeeType()->isObjCQualifiedIdType())
        return true;
    }
    return false;
  }

  bool PointerTypeTakesAnyBlockArguments(QualType QT);
  bool PointerTypeTakesAnyObjCQualifiedType(QualType QT);
  void GetExtentOfArgList(const char *Name, const char *&LParen,
                          const char *&RParen);

  void QuoteDoublequotes(std::string &From, std::string &To) {
    for (unsigned i = 0; i < From.length(); i++) {
      if (From[i] == '"')
        To += "\\\"";
      else
        To += From[i];
    }
  }

  QualType getSimpleFunctionType(QualType result,
                                 ArrayRef<QualType> args,
                                 bool variadic = false) {
    if (result == Context->getObjCInstanceType())
      result =  Context->getObjCIdType();
    FunctionProtoType::ExtProtoInfo fpi;
    fpi.Variadic = variadic;
    return Context->getFunctionType(result, args, fpi);
  }

  // Helper function: create a CStyleCastExpr with trivial type source info.
  CStyleCastExpr* NoTypeInfoCStyleCastExpr(ASTContext *Ctx, QualType Ty,
                                           CastKind Kind, Expr *E) {
    TypeSourceInfo *TInfo = Ctx->getTrivialTypeSourceInfo(Ty, SourceLocation());
    return CStyleCastExpr::Create(*Ctx, Ty, VK_RValue, Kind, E, nullptr,
                                  TInfo, SourceLocation(), SourceLocation());
  }

  bool ImplementationIsNonLazy(const ObjCImplDecl *OD) const {
    IdentifierInfo* II = &Context->Idents.get("load");
    Selector LoadSel = Context->Selectors.getSelector(0, &II);
    return OD->getClassMethod(LoadSel) != nullptr;
  }

  StringLiteral *getStringLiteral(StringRef Str) {
    QualType StrType = Context->getConstantArrayType(
        Context->CharTy, llvm::APInt(32, Str.size() + 1), nullptr,
        ArrayType::Normal, 0);
    return StringLiteral::Create(*Context, Str, StringLiteral::Ascii,
                                 /*Pascal=*/false, StrType, SourceLocation());
  }
};
606} // end anonymous namespace

608void RewriteModernObjC::RewriteBlocksInFunctionProtoType(QualType funcType,
                                                 NamedDecl *D) {
if (const FunctionProtoType *fproto
    = dyn_cast<FunctionProtoType>(funcType.IgnoreParens())) {
  for (const auto &I : fproto->param_types())
    if (isTopLevelBlockPointerType(I)) {
      // All the args are checked/rewritten. Don't call twice!
      RewriteBlockPointerDecl(D);
      break;
    }
}
619}

621void RewriteModernObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) {
const PointerType *PT = funcType->getAs<PointerType>();
if (PT && PointerTypeTakesAnyBlockArguments(funcType))
  RewriteBlocksInFunctionProtoType(PT->getPointeeType(), ND);
625}

627static bool IsHeaderFile(const std::string &Filename) {
std::string::size_type DotPos = Filename.rfind('.');

if (DotPos == std::string::npos) {
  // no file extension
  return false;
}

std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
// C header: .h
// C++ header: .hh or .H;
return Ext == "h" || Ext == "hh" || Ext == "H";
639}

641RewriteModernObjC::RewriteModernObjC(std::string inFile,
                                   std::unique_ptr<raw_ostream> OS,
                                   DiagnosticsEngine &D,
                                   const LangOptions &LOpts,
                                   bool silenceMacroWarn, bool LineInfo)
  : Diags(D), LangOpts(LOpts), InFileName(inFile), OutFile(std::move(OS)),
    SilenceRewriteMacroWarning(silenceMacroWarn), GenerateLineInfo(LineInfo) {
IsHeader = IsHeaderFile(inFile);
RewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning,
             "rewriting sub-expression within a macro (may not be correct)");
// FIXME. This should be an error. But if block is not called, it is OK. And it
// may break including some headers.
GlobalBlockRewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning,
  "rewriting block literal declared in global scope is not implemented");

TryFinallyContainsReturnDiag = Diags.getCustomDiagID(
             DiagnosticsEngine::Warning,
             "rewriter doesn't support user-specified control flow semantics "
             "for @try/@finally (code may not execute properly)");
660}

662std::unique_ptr<ASTConsumer> clang::CreateModernObjCRewriter(
  const std::string &InFile, std::unique_ptr<raw_ostream> OS,
  DiagnosticsEngine &Diags, const LangOptions &LOpts,
  bool SilenceRewriteMacroWarning, bool LineInfo) {
return std::make_unique<RewriteModernObjC>(InFile, std::move(OS), Diags,
                                            LOpts, SilenceRewriteMacroWarning,
                                            LineInfo);
669}

671void RewriteModernObjC::InitializeCommon(ASTContext &context) {
Context = &context;
SM = &Context->getSourceManager();
TUDecl = Context->getTranslationUnitDecl();
MsgSendFunctionDecl = nullptr;
MsgSendSuperFunctionDecl = nullptr;
MsgSendStretFunctionDecl = nullptr;
MsgSendSuperStretFunctionDecl = nullptr;
MsgSendFpretFunctionDecl = nullptr;
GetClassFunctionDecl = nullptr;
GetMetaClassFunctionDecl = nullptr;
GetSuperClassFunctionDecl = nullptr;
SelGetUidFunctionDecl = nullptr;
CFStringFunctionDecl = nullptr;
ConstantStringClassReference = nullptr;
NSStringRecord = nullptr;
CurMethodDef = nullptr;
CurFunctionDef = nullptr;
GlobalVarDecl = nullptr;
GlobalConstructionExp = nullptr;
SuperStructDecl = nullptr;
ProtocolTypeDecl = nullptr;
ConstantStringDecl = nullptr;
BcLabelCount = 0;
SuperConstructorFunctionDecl = nullptr;
NumObjCStringLiterals = 0;
PropParentMap = nullptr;
CurrentBody = nullptr;
DisableReplaceStmt = false;
objc_impl_method = false;

// Get the ID and start/end of the main file.
MainFileID = SM->getMainFileID();
const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID);
MainFileStart = MainBuf->getBufferStart();
MainFileEnd = MainBuf->getBufferEnd();

Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOpts());
709}

711//===----------------------------------------------------------------------===//
712// Top Level Driver Code
713//===----------------------------------------------------------------------===//

715void RewriteModernObjC::HandleTopLevelSingleDecl(Decl *D) {
if (Diags.hasErrorOccurred())
  return;

// Two cases: either the decl could be in the main file, or it could be in a
// #included file.  If the former, rewrite it now.  If the later, check to see
// if we rewrote the #include/#import.
SourceLocation Loc = D->getLocation();
Loc = SM->getExpansionLoc(Loc);

// If this is for a builtin, ignore it.
if (Loc.isInvalid()) return;

// Look for built-in declarations that we need to refer during the rewrite.
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
  RewriteFunctionDecl(FD);
} else if (VarDecl *FVD = dyn_cast<VarDecl>(D)) {
  // declared in <Foundation/NSString.h>
  if (FVD->getName() == "_NSConstantStringClassReference") {
    ConstantStringClassReference = FVD;
    return;
  }
} else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(D)) {
  RewriteCategoryDecl(CD);
} else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
  if (PD->isThisDeclarationADefinition())
    RewriteProtocolDecl(PD);
} else if (LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(D)) {
  // Recurse into linkage specifications
  for (DeclContext::decl_iterator DI = LSD->decls_begin(),
                               DIEnd = LSD->decls_end();
       DI != DIEnd; ) {
    if (ObjCInterfaceDecl *IFace = dyn_cast<ObjCInterfaceDecl>((*DI))) {
      if (!IFace->isThisDeclarationADefinition()) {
        SmallVector<Decl *, 8> DG;
        SourceLocation StartLoc = IFace->getBeginLoc();
        do {
          if (isa<ObjCInterfaceDecl>(*DI) &&
              !cast<ObjCInterfaceDecl>(*DI)->isThisDeclarationADefinition() &&
              StartLoc == (*DI)->getBeginLoc())
            DG.push_back(*DI);
          else
            break;

          ++DI;
        } while (DI != DIEnd);
        RewriteForwardClassDecl(DG);
        continue;
      }
      else {
        // Keep track of all interface declarations seen.
        ObjCInterfacesSeen.push_back(IFace);
        ++DI;
        continue;
      }
    }

    if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>((*DI))) {
      if (!Proto->isThisDeclarationADefinition()) {
        SmallVector<Decl *, 8> DG;
        SourceLocation StartLoc = Proto->getBeginLoc();
        do {
          if (isa<ObjCProtocolDecl>(*DI) &&
              !cast<ObjCProtocolDecl>(*DI)->isThisDeclarationADefinition() &&
              StartLoc == (*DI)->getBeginLoc())
            DG.push_back(*DI);
          else
            break;

          ++DI;
        } while (DI != DIEnd);
        RewriteForwardProtocolDecl(DG);
        continue;
      }
    }

    HandleTopLevelSingleDecl(*DI);
    ++DI;
  }
}
// If we have a decl in the main file, see if we should rewrite it.
if (SM->isWrittenInMainFile(Loc))
  return HandleDeclInMainFile(D);
798}

800//===----------------------------------------------------------------------===//
801// Syntactic (non-AST) Rewriting Code
802//===----------------------------------------------------------------------===//

804void RewriteModernObjC::RewriteInclude() {
SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID);
StringRef MainBuf = SM->getBufferData(MainFileID);
const char *MainBufStart = MainBuf.begin();
const char *MainBufEnd = MainBuf.end();
size_t ImportLen = strlen("import");

// Loop over the whole file, looking for includes.
for (const char *BufPtr = MainBufStart; BufPtr < MainBufEnd; ++BufPtr) {
  if (*BufPtr == '#') {
    if (++BufPtr == MainBufEnd)
      return;
    while (*BufPtr == ' ' || *BufPtr == '\t')
      if (++BufPtr == MainBufEnd)
        return;
    if (!strncmp(BufPtr, "import", ImportLen)) {
      // replace import with include
      SourceLocation ImportLoc =
        LocStart.getLocWithOffset(BufPtr-MainBufStart);
      ReplaceText(ImportLoc, ImportLen, "include");
      BufPtr += ImportLen;
    }
  }
}
828}

830static void WriteInternalIvarName(const ObjCInterfaceDecl *IDecl,
                                ObjCIvarDecl *IvarDecl, std::string &Result) {
Result += "OBJC_IVAR_$_";
Result += IDecl->getName();
Result += "$";
Result += IvarDecl->getName();
836}

838std::string
839RewriteModernObjC::getIvarAccessString(ObjCIvarDecl *D) {
const ObjCInterfaceDecl *ClassDecl = D->getContainingInterface();

// Build name of symbol holding ivar offset.
std::string IvarOffsetName;
if (D->isBitField())
  ObjCIvarBitfieldGroupOffset(D, IvarOffsetName);
else
  WriteInternalIvarName(ClassDecl, D, IvarOffsetName);

std::string S = "(*(";
QualType IvarT = D->getType();
if (D->isBitField())
  IvarT = GetGroupRecordTypeForObjCIvarBitfield(D);

if (!isa<TypedefType>(IvarT) && IvarT->isRecordType()) {
  RecordDecl *RD = IvarT->castAs<RecordType>()->getDecl();
  RD = RD->getDefinition();
  if (RD && !RD->getDeclName().getAsIdentifierInfo()) {
    // decltype(((Foo_IMPL*)0)->bar) *
    auto *CDecl = cast<ObjCContainerDecl>(D->getDeclContext());
    // ivar in class extensions requires special treatment.
    if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl))
      CDecl = CatDecl->getClassInterface();
    std::string RecName = std::string(CDecl->getName());
    RecName += "_IMPL";
    RecordDecl *RD =
        RecordDecl::Create(*Context, TTK_Struct, TUDecl, SourceLocation(),
                           SourceLocation(), &Context->Idents.get(RecName));
    QualType PtrStructIMPL = Context->getPointerType(Context->getTagDeclType(RD));
    unsigned UnsignedIntSize =
    static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
    Expr *Zero = IntegerLiteral::Create(*Context,
                                        llvm::APInt(UnsignedIntSize, 0),
                                        Context->UnsignedIntTy, SourceLocation());
    Zero = NoTypeInfoCStyleCastExpr(Context, PtrStructIMPL, CK_BitCast, Zero);
    ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
                                            Zero);
    FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                      SourceLocation(),
                                      &Context->Idents.get(D->getNameAsString()),
                                      IvarT, nullptr,
                                      /*BitWidth=*/nullptr, /*Mutable=*/true,
                                      ICIS_NoInit);
    MemberExpr *ME = MemberExpr::CreateImplicit(
        *Context, PE, true, FD, FD->getType(), VK_LValue, OK_Ordinary);
    IvarT = Context->getDecltypeType(ME, ME->getType());
  }
}
convertObjCTypeToCStyleType(IvarT);
QualType castT = Context->getPointerType(IvarT);
std::string TypeString(castT.getAsString(Context->getPrintingPolicy()));
S += TypeString;
S += ")";

// ((char *)self + IVAR_OFFSET_SYMBOL_NAME)
S += "((char *)self + ";
S += IvarOffsetName;
S += "))";
if (D->isBitField()) {
  S += ".";
  S += D->getNameAsString();
}
ReferencedIvars[const_cast<ObjCInterfaceDecl *>(ClassDecl)].insert(D);
return S;
904}

906/// mustSynthesizeSetterGetterMethod - returns true if setter or getter has not
907/// been found in the class implementation. In this case, it must be synthesized.
908static bool mustSynthesizeSetterGetterMethod(ObjCImplementationDecl *IMP,
                                           ObjCPropertyDecl *PD,
                                           bool getter) {
auto *OMD = IMP->getInstanceMethod(getter ? PD->getGetterName()
                                          : PD->getSetterName());
return !OMD || OMD->isSynthesizedAccessorStub();
914}

916void RewriteModernObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
                                        ObjCImplementationDecl *IMD,
                                        ObjCCategoryImplDecl *CID) {
static bool objcGetPropertyDefined = false;
static bool objcSetPropertyDefined = false;
SourceLocation startGetterSetterLoc;

if (PID->getBeginLoc().isValid()) {
  SourceLocation startLoc = PID->getBeginLoc();
  InsertText(startLoc, "// ");
  const char *startBuf = SM->getCharacterData(startLoc);
  assert((*startBuf == '@') && "bogus @synthesize location")(((*startBuf == '@') && "bogus @synthesize location")
 ? static_cast<void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @synthesize location\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 927, __PRETTY_FUNCTION__));
  const char *semiBuf = strchr(startBuf, ';');
  assert((*semiBuf == ';') && "@synthesize: can't find ';'")(((*semiBuf == ';') && "@synthesize: can't find ';'")
 ? static_cast<void> (0) : __assert_fail ("(*semiBuf == ';') && \"@synthesize: can't find ';'\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 929, __PRETTY_FUNCTION__));
  startGetterSetterLoc = startLoc.getLocWithOffset(semiBuf-startBuf+1);
} else
  startGetterSetterLoc = IMD ? IMD->getEndLoc() : CID->getEndLoc();

if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
  return; // FIXME: is this correct?

// Generate the 'getter' function.
ObjCPropertyDecl *PD = PID->getPropertyDecl();
ObjCIvarDecl *OID = PID->getPropertyIvarDecl();
assert(IMD && OID && "Synthesized ivars must be attached to @implementation")((IMD && OID && "Synthesized ivars must be attached to @implementation"
) ? static_cast<void> (0) : __assert_fail ("IMD && OID && \"Synthesized ivars must be attached to @implementation\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 940, __PRETTY_FUNCTION__));

unsigned Attributes = PD->getPropertyAttributes();
if (mustSynthesizeSetterGetterMethod(IMD, PD, true /*getter*/)) {
  bool GenGetProperty = !(Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) &&
                        (Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
                                       ObjCPropertyDecl::OBJC_PR_copy));
  std::string Getr;
  if (GenGetProperty && !objcGetPropertyDefined) {
    objcGetPropertyDefined = true;
    // FIXME. Is this attribute correct in all cases?
    Getr = "\nextern \"C\" __declspec(dllimport) "
          "id objc_getProperty(id, SEL, long, bool);\n";
  }
  RewriteObjCMethodDecl(OID->getContainingInterface(),
                        PID->getGetterMethodDecl(), Getr);
  Getr += "{ ";
  // Synthesize an explicit cast to gain access to the ivar.
  // See objc-act.c:objc_synthesize_new_getter() for details.
  if (GenGetProperty) {
    // return objc_getProperty(self, _cmd, offsetof(ClassDecl, OID), 1)
    Getr += "typedef ";
    const FunctionType *FPRetType = nullptr;
    RewriteTypeIntoString(PID->getGetterMethodDecl()->getReturnType(), Getr,
                          FPRetType);
    Getr += " _TYPE";
    if (FPRetType) {
      Getr += ")"; // close the precedence "scope" for "*".

      // Now, emit the argument types (if any).
      if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)){
        Getr += "(";
        for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
          if (i) Getr += ", ";
          std::string ParamStr =
              FT->getParamType(i).getAsString(Context->getPrintingPolicy());
          Getr += ParamStr;
        }
        if (FT->isVariadic()) {
          if (FT->getNumParams())
            Getr += ", ";
          Getr += "...";
        }
        Getr += ")";
      } else
        Getr += "()";
    }
    Getr += ";\n";
    Getr += "return (_TYPE)";
    Getr += "objc_getProperty(self, _cmd, ";
    RewriteIvarOffsetComputation(OID, Getr);
    Getr += ", 1)";
  }
  else
    Getr += "return " + getIvarAccessString(OID);
  Getr += "; }";
  InsertText(startGetterSetterLoc, Getr);
}

if (PD->isReadOnly() ||
    !mustSynthesizeSetterGetterMethod(IMD, PD, false /*setter*/))
  return;

// Generate the 'setter' function.
std::string Setr;
bool GenSetProperty = Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
                                    ObjCPropertyDecl::OBJC_PR_copy);
if (GenSetProperty && !objcSetPropertyDefined) {
  objcSetPropertyDefined = true;
  // FIXME. Is this attribute correct in all cases?
  Setr = "\nextern \"C\" __declspec(dllimport) "
  "void objc_setProperty (id, SEL, long, id, bool, bool);\n";
}

RewriteObjCMethodDecl(OID->getContainingInterface(),
                      PID->getSetterMethodDecl(), Setr);
Setr += "{ ";
// Synthesize an explicit cast to initialize the ivar.
// See objc-act.c:objc_synthesize_new_setter() for details.
if (GenSetProperty) {
  Setr += "objc_setProperty (self, _cmd, ";
  RewriteIvarOffsetComputation(OID, Setr);
  Setr += ", (id)";
  Setr += PD->getName();
  Setr += ", ";
  if (Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic)
    Setr += "0, ";
  else
    Setr += "1, ";
  if (Attributes & ObjCPropertyDecl::OBJC_PR_copy)
    Setr += "1)";
  else
    Setr += "0)";
}
else {
  Setr += getIvarAccessString(OID) + " = ";
  Setr += PD->getName();
}
Setr += "; }\n";
InsertText(startGetterSetterLoc, Setr);
1040}

1042static void RewriteOneForwardClassDecl(ObjCInterfaceDecl *ForwardDecl,
                                     std::string &typedefString) {
typedefString += "\n#ifndef _REWRITER_typedef_";
typedefString += ForwardDecl->getNameAsString();
typedefString += "\n";
typedefString += "#define _REWRITER_typedef_";
typedefString += ForwardDecl->getNameAsString();
typedefString += "\n";
typedefString += "typedef struct objc_object ";
typedefString += ForwardDecl->getNameAsString();
// typedef struct { } _objc_exc_Classname;
typedefString += ";\ntypedef struct {} _objc_exc_";
typedefString += ForwardDecl->getNameAsString();
typedefString += ";\n#endif\n";
1056}

1058void RewriteModernObjC::RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
                                            const std::string &typedefString) {
SourceLocation startLoc = ClassDecl->getBeginLoc();
const char *startBuf = SM->getCharacterData(startLoc);
const char *semiPtr = strchr(startBuf, ';');
// Replace the @class with typedefs corresponding to the classes.
ReplaceText(startLoc, semiPtr-startBuf+1, typedefString);
1065}

1067void RewriteModernObjC::RewriteForwardClassDecl(DeclGroupRef D) {
std::string typedefString;
for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
  if (ObjCInterfaceDecl *ForwardDecl = dyn_cast<ObjCInterfaceDecl>(*I)) {
    if (I == D.begin()) {
      // Translate to typedef's that forward reference structs with the same name
      // as the class. As a convenience, we include the original declaration
      // as a comment.
      typedefString += "// @class ";
      typedefString += ForwardDecl->getNameAsString();
      typedefString += ";";
    }
    RewriteOneForwardClassDecl(ForwardDecl, typedefString);
  }
  else
    HandleTopLevelSingleDecl(*I);
}
DeclGroupRef::iterator I = D.begin();
RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(*I), typedefString);
1086}

1088void RewriteModernObjC::RewriteForwardClassDecl(
                              const SmallVectorImpl<Decl *> &D) {
std::string typedefString;
for (unsigned i = 0; i < D.size(); i++) {
  ObjCInterfaceDecl *ForwardDecl = cast<ObjCInterfaceDecl>(D[i]);
  if (i == 0) {
    typedefString += "// @class ";
    typedefString += ForwardDecl->getNameAsString();
    typedefString += ";";
  }
  RewriteOneForwardClassDecl(ForwardDecl, typedefString);
}
RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(D[0]), typedefString);
1101}

1103void RewriteModernObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
// When method is a synthesized one, such as a getter/setter there is
// nothing to rewrite.
if (Method->isImplicit())
  return;
SourceLocation LocStart = Method->getBeginLoc();
SourceLocation LocEnd = Method->getEndLoc();

if (SM->getExpansionLineNumber(LocEnd) >
    SM->getExpansionLineNumber(LocStart)) {
  InsertText(LocStart, "#if 0\n");
  ReplaceText(LocEnd, 1, ";\n#endif\n");
} else {
  InsertText(LocStart, "// ");
}
1118}

1120void RewriteModernObjC::RewriteProperty(ObjCPropertyDecl *prop) {
SourceLocation Loc = prop->getAtLoc();

ReplaceText(Loc, 0, "// ");
// FIXME: handle properties that are declared across multiple lines.
1125}

1127void RewriteModernObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) {
SourceLocation LocStart = CatDecl->getBeginLoc();

// FIXME: handle category headers that are declared across multiple lines.
if (CatDecl->getIvarRBraceLoc().isValid()) {
  ReplaceText(LocStart, 1, "/** ");
  ReplaceText(CatDecl->getIvarRBraceLoc(), 1, "**/ ");
}
else {
  ReplaceText(LocStart, 0, "// ");
}

for (auto *I : CatDecl->instance_properties())
  RewriteProperty(I);

for (auto *I : CatDecl->instance_methods())
  RewriteMethodDeclaration(I);
for (auto *I : CatDecl->class_methods())
  RewriteMethodDeclaration(I);

// Lastly, comment out the @end.
ReplaceText(CatDecl->getAtEndRange().getBegin(),
            strlen("@end"), "/* @end */\n");
1150}

1152void RewriteModernObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) {
SourceLocation LocStart = PDecl->getBeginLoc();
assert(PDecl->isThisDeclarationADefinition())((PDecl->isThisDeclarationADefinition()) ? static_cast<
void> (0) : __assert_fail ("PDecl->isThisDeclarationADefinition()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1154, __PRETTY_FUNCTION__));

// FIXME: handle protocol headers that are declared across multiple lines.
ReplaceText(LocStart, 0, "// ");

for (auto *I : PDecl->instance_methods())
  RewriteMethodDeclaration(I);
for (auto *I : PDecl->class_methods())
  RewriteMethodDeclaration(I);
for (auto *I : PDecl->instance_properties())
  RewriteProperty(I);

// Lastly, comment out the @end.
SourceLocation LocEnd = PDecl->getAtEndRange().getBegin();
ReplaceText(LocEnd, strlen("@end"), "/* @end */\n");

// Must comment out @optional/@required
const char *startBuf = SM->getCharacterData(LocStart);
const char *endBuf = SM->getCharacterData(LocEnd);
for (const char *p = startBuf; p < endBuf; p++) {
  if (*p == '@' && !strncmp(p+1, "optional", strlen("optional"))) {
    SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
    ReplaceText(OptionalLoc, strlen("@optional"), "/* @optional */");

  }
  else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) {
    SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
    ReplaceText(OptionalLoc, strlen("@required"), "/* @required */");

  }
}
1185}

1187void RewriteModernObjC::RewriteForwardProtocolDecl(DeclGroupRef D) {
SourceLocation LocStart = (*D.begin())->getBeginLoc();
if (LocStart.isInvalid())
  llvm_unreachable("Invalid SourceLocation")::llvm::llvm_unreachable_internal("Invalid SourceLocation", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1190);
// FIXME: handle forward protocol that are declared across multiple lines.
ReplaceText(LocStart, 0, "// ");
1193}

1195void
1196RewriteModernObjC::RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG) {
SourceLocation LocStart = DG[0]->getBeginLoc();
if (LocStart.isInvalid())
  llvm_unreachable("Invalid SourceLocation")::llvm::llvm_unreachable_internal("Invalid SourceLocation", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1199);
// FIXME: handle forward protocol that are declared across multiple lines.
ReplaceText(LocStart, 0, "// ");
1202}

1204void RewriteModernObjC::RewriteTypeIntoString(QualType T, std::string &ResultStr,
                                      const FunctionType *&FPRetType) {
if (T->isObjCQualifiedIdType())
  ResultStr += "id";
else if (T->isFunctionPointerType() ||
         T->isBlockPointerType()) {
  // needs special handling, since pointer-to-functions have special
  // syntax (where a decaration models use).
  QualType retType = T;
  QualType PointeeTy;
  if (const PointerType* PT = retType->getAs<PointerType>())
    PointeeTy = PT->getPointeeType();
  else if (const BlockPointerType *BPT = retType->getAs<BlockPointerType>())
    PointeeTy = BPT->getPointeeType();
  if ((FPRetType = PointeeTy->getAs<FunctionType>())) {
    ResultStr +=
        FPRetType->getReturnType().getAsString(Context->getPrintingPolicy());
    ResultStr += "(*";
  }
} else
  ResultStr += T.getAsString(Context->getPrintingPolicy());
1225}

1227void RewriteModernObjC::RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
                                      ObjCMethodDecl *OMD,
                                      std::string &ResultStr) {
//fprintf(stderr,"In RewriteObjCMethodDecl\n");
const FunctionType *FPRetType = nullptr;
ResultStr += "\nstatic ";
RewriteTypeIntoString(OMD->getReturnType(), ResultStr, FPRetType);
ResultStr += " ";

// Unique method name
std::string NameStr;

if (OMD->isInstanceMethod())
  NameStr += "_I_";
else
  NameStr += "_C_";

NameStr += IDecl->getNameAsString();
NameStr += "_";

if (ObjCCategoryImplDecl *CID =
    dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) {
  NameStr += CID->getNameAsString();
  NameStr += "_";
}
// Append selector names, replacing ':' with '_'
{
  std::string selString = OMD->getSelector().getAsString();
  int len = selString.size();
  for (int i = 0; i < len; i++)
    if (selString[i] == ':')
      selString[i] = '_';
  NameStr += selString;
}
// Remember this name for metadata emission
MethodInternalNames[OMD] = NameStr;
ResultStr += NameStr;

// Rewrite arguments
ResultStr += "(";

// invisible arguments
if (OMD->isInstanceMethod()) {
  QualType selfTy = Context->getObjCInterfaceType(IDecl);
  selfTy = Context->getPointerType(selfTy);
  if (!LangOpts.MicrosoftExt) {
    if (ObjCSynthesizedStructs.count(const_cast<ObjCInterfaceDecl*>(IDecl)))
      ResultStr += "struct ";
  }
  // When rewriting for Microsoft, explicitly omit the structure name.
  ResultStr += IDecl->getNameAsString();
  ResultStr += " *";
}
else
  ResultStr += Context->getObjCClassType().getAsString(
    Context->getPrintingPolicy());

ResultStr += " self, ";
ResultStr += Context->getObjCSelType().getAsString(Context->getPrintingPolicy());
ResultStr += " _cmd";

// Method arguments.
for (const auto *PDecl : OMD->parameters()) {
  ResultStr += ", ";
  if (PDecl->getType()->isObjCQualifiedIdType()) {
    ResultStr += "id ";
    ResultStr += PDecl->getNameAsString();
  } else {
    std::string Name = PDecl->getNameAsString();
    QualType QT = PDecl->getType();
    // Make sure we convert "t (^)(...)" to "t (*)(...)".
    (void)convertBlockPointerToFunctionPointer(QT);
    QT.getAsStringInternal(Name, Context->getPrintingPolicy());
    ResultStr += Name;
  }
}
if (OMD->isVariadic())
  ResultStr += ", ...";
ResultStr += ") ";

if (FPRetType) {
  ResultStr += ")"; // close the precedence "scope" for "*".

  // Now, emit the argument types (if any).
  if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)) {
    ResultStr += "(";
    for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
      if (i) ResultStr += ", ";
      std::string ParamStr =
          FT->getParamType(i).getAsString(Context->getPrintingPolicy());
      ResultStr += ParamStr;
    }
    if (FT->isVariadic()) {
      if (FT->getNumParams())
        ResultStr += ", ";
      ResultStr += "...";
    }
    ResultStr += ")";
  } else {
    ResultStr += "()";
  }
}
1329}

1331void RewriteModernObjC::RewriteImplementationDecl(Decl *OID) {
ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID);
ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID);
assert((IMD || CID) && "Unknown implementation type")(((IMD || CID) && "Unknown implementation type") ? static_cast
<void> (0) : __assert_fail ("(IMD || CID) && \"Unknown implementation type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1334, __PRETTY_FUNCTION__));

if (IMD) {
  if (IMD->getIvarRBraceLoc().isValid()) {
    ReplaceText(IMD->getBeginLoc(), 1, "/** ");
    ReplaceText(IMD->getIvarRBraceLoc(), 1, "**/ ");
  }
  else {
    InsertText(IMD->getBeginLoc(), "// ");
  }
}
else
  InsertText(CID->getBeginLoc(), "// ");

for (auto *OMD : IMD ? IMD->instance_methods() : CID->instance_methods()) {
  if (!OMD->getBody())
    continue;
  std::string ResultStr;
  RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
  SourceLocation LocStart = OMD->getBeginLoc();
  SourceLocation LocEnd = OMD->getCompoundBody()->getBeginLoc();

  const char *startBuf = SM->getCharacterData(LocStart);
  const char *endBuf = SM->getCharacterData(LocEnd);
  ReplaceText(LocStart, endBuf-startBuf, ResultStr);
}

for (auto *OMD : IMD ? IMD->class_methods() : CID->class_methods()) {
  if (!OMD->getBody())
    continue;
  std::string ResultStr;
  RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
  SourceLocation LocStart = OMD->getBeginLoc();
  SourceLocation LocEnd = OMD->getCompoundBody()->getBeginLoc();

  const char *startBuf = SM->getCharacterData(LocStart);
  const char *endBuf = SM->getCharacterData(LocEnd);
  ReplaceText(LocStart, endBuf-startBuf, ResultStr);
}
for (auto *I : IMD ? IMD->property_impls() : CID->property_impls())
  RewritePropertyImplDecl(I, IMD, CID);

InsertText(IMD ? IMD->getEndLoc() : CID->getEndLoc(), "// ");
1377}

1379void RewriteModernObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) {
// Do not synthesize more than once.
if (ObjCSynthesizedStructs.count(ClassDecl))
  return;
// Make sure super class's are written before current class is written.
ObjCInterfaceDecl *SuperClass = ClassDecl->getSuperClass();
while (SuperClass) {
  RewriteInterfaceDecl(SuperClass);
  SuperClass = SuperClass->getSuperClass();
}
std::string ResultStr;
if (!ObjCWrittenInterfaces.count(ClassDecl->getCanonicalDecl())) {
  // we haven't seen a forward decl - generate a typedef.
  RewriteOneForwardClassDecl(ClassDecl, ResultStr);
  RewriteIvarOffsetSymbols(ClassDecl, ResultStr);

  RewriteObjCInternalStruct(ClassDecl, ResultStr);
  // Mark this typedef as having been written into its c++ equivalent.
  ObjCWrittenInterfaces.insert(ClassDecl->getCanonicalDecl());

  for (auto *I : ClassDecl->instance_properties())
    RewriteProperty(I);
  for (auto *I : ClassDecl->instance_methods())
    RewriteMethodDeclaration(I);
  for (auto *I : ClassDecl->class_methods())
    RewriteMethodDeclaration(I);

  // Lastly, comment out the @end.
  ReplaceText(ClassDecl->getAtEndRange().getBegin(), strlen("@end"),
              "/* @end */\n");
}
1410}

1412Stmt *RewriteModernObjC::RewritePropertyOrImplicitSetter(PseudoObjectExpr *PseudoOp) {
SourceRange OldRange = PseudoOp->getSourceRange();

// We just magically know some things about the structure of this
// expression.
ObjCMessageExpr *OldMsg =
  cast<ObjCMessageExpr>(PseudoOp->getSemanticExpr(
                          PseudoOp->getNumSemanticExprs() - 1));

// Because the rewriter doesn't allow us to rewrite rewritten code,
// we need to suppress rewriting the sub-statements.
Expr *Base;
SmallVector<Expr*, 2> Args;
{
  DisableReplaceStmtScope S(*this);

  // Rebuild the base expression if we have one.
  Base = nullptr;
  if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
    Base = OldMsg->getInstanceReceiver();
    Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
    Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
  }

  unsigned numArgs = OldMsg->getNumArgs();
  for (unsigned i = 0; i < numArgs; i++) {
    Expr *Arg = OldMsg->getArg(i);
    if (isa<OpaqueValueExpr>(Arg))
      Arg = cast<OpaqueValueExpr>(Arg)->getSourceExpr();
    Arg = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Arg));
    Args.push_back(Arg);
  }
}

// TODO: avoid this copy.
SmallVector<SourceLocation, 1> SelLocs;
OldMsg->getSelectorLocs(SelLocs);

ObjCMessageExpr *NewMsg = nullptr;
switch (OldMsg->getReceiverKind()) {
case ObjCMessageExpr::Class:
  NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
                                   OldMsg->getValueKind(),
                                   OldMsg->getLeftLoc(),
                                   OldMsg->getClassReceiverTypeInfo(),
                                   OldMsg->getSelector(),
                                   SelLocs,
                                   OldMsg->getMethodDecl(),
                                   Args,
                                   OldMsg->getRightLoc(),
                                   OldMsg->isImplicit());
  break;

case ObjCMessageExpr::Instance:
  NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
                                   OldMsg->getValueKind(),
                                   OldMsg->getLeftLoc(),
                                   Base,
                                   OldMsg->getSelector(),
                                   SelLocs,
                                   OldMsg->getMethodDecl(),
                                   Args,
                                   OldMsg->getRightLoc(),
                                   OldMsg->isImplicit());
  break;

case ObjCMessageExpr::SuperClass:
case ObjCMessageExpr::SuperInstance:
  NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
                                   OldMsg->getValueKind(),
                                   OldMsg->getLeftLoc(),
                                   OldMsg->getSuperLoc(),
               OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
                                   OldMsg->getSuperType(),
                                   OldMsg->getSelector(),
                                   SelLocs,
                                   OldMsg->getMethodDecl(),
                                   Args,
                                   OldMsg->getRightLoc(),
                                   OldMsg->isImplicit());
  break;
}

Stmt *Replacement = SynthMessageExpr(NewMsg);
ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
return Replacement;
1498}

1500Stmt *RewriteModernObjC::RewritePropertyOrImplicitGetter(PseudoObjectExpr *PseudoOp) {
SourceRange OldRange = PseudoOp->getSourceRange();

// We just magically know some things about the structure of this
// expression.
ObjCMessageExpr *OldMsg =
  cast<ObjCMessageExpr>(PseudoOp->getResultExpr()->IgnoreImplicit());

// Because the rewriter doesn't allow us to rewrite rewritten code,
// we need to suppress rewriting the sub-statements.
Expr *Base = nullptr;
SmallVector<Expr*, 1> Args;
{
  DisableReplaceStmtScope S(*this);
  // Rebuild the base expression if we have one.
  if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
    Base = OldMsg->getInstanceReceiver();
    Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
    Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
  }
  unsigned numArgs = OldMsg->getNumArgs();
  for (unsigned i = 0; i < numArgs; i++) {
    Expr *Arg = OldMsg->getArg(i);
    if (isa<OpaqueValueExpr>(Arg))
      Arg = cast<OpaqueValueExpr>(Arg)->getSourceExpr();
    Arg = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Arg));
    Args.push_back(Arg);
  }
}

// Intentionally empty.
SmallVector<SourceLocation, 1> SelLocs;

ObjCMessageExpr *NewMsg = nullptr;
switch (OldMsg->getReceiverKind()) {
case ObjCMessageExpr::Class:
  NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
                                   OldMsg->getValueKind(),
                                   OldMsg->getLeftLoc(),
                                   OldMsg->getClassReceiverTypeInfo(),
                                   OldMsg->getSelector(),
                                   SelLocs,
                                   OldMsg->getMethodDecl(),
                                   Args,
                                   OldMsg->getRightLoc(),
                                   OldMsg->isImplicit());
  break;

case ObjCMessageExpr::Instance:
  NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
                                   OldMsg->getValueKind(),
                                   OldMsg->getLeftLoc(),
                                   Base,
                                   OldMsg->getSelector(),
                                   SelLocs,
                                   OldMsg->getMethodDecl(),
                                   Args,
                                   OldMsg->getRightLoc(),
                                   OldMsg->isImplicit());
  break;

case ObjCMessageExpr::SuperClass:
case ObjCMessageExpr::SuperInstance:
  NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
                                   OldMsg->getValueKind(),
                                   OldMsg->getLeftLoc(),
                                   OldMsg->getSuperLoc(),
               OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
                                   OldMsg->getSuperType(),
                                   OldMsg->getSelector(),
                                   SelLocs,
                                   OldMsg->getMethodDecl(),
                                   Args,
                                   OldMsg->getRightLoc(),
                                   OldMsg->isImplicit());
  break;
}

Stmt *Replacement = SynthMessageExpr(NewMsg);
ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
return Replacement;
1581}

1583/// SynthCountByEnumWithState - To print:
1584/// ((NSUInteger (*)
1585///  (id, SEL, struct __objcFastEnumerationState *, id *, NSUInteger))
1586///  (void *)objc_msgSend)((id)l_collection,
1587///                        sel_registerName(
1588///                          "countByEnumeratingWithState:objects:count:"),
1589///                        &enumState,
1590///                        (id *)__rw_items, (NSUInteger)16)
1591///
1592void RewriteModernObjC::SynthCountByEnumWithState(std::string &buf) {
buf += "((_WIN_NSUInteger (*) (id, SEL, struct __objcFastEnumerationState *, "
"id *, _WIN_NSUInteger))(void *)objc_msgSend)";
buf += "\n\t\t";
buf += "((id)l_collection,\n\t\t";
buf += "sel_registerName(\"countByEnumeratingWithState:objects:count:\"),";
buf += "\n\t\t";
buf += "&enumState, "
       "(id *)__rw_items, (_WIN_NSUInteger)16)";
1601}

1603/// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach
1604/// statement to exit to its outer synthesized loop.
1605///
1606Stmt *RewriteModernObjC::RewriteBreakStmt(BreakStmt *S) {
if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
  return S;
// replace break with goto __break_label
std::string buf;

SourceLocation startLoc = S->getBeginLoc();
buf = "goto __break_label_";
buf += utostr(ObjCBcLabelNo.back());
ReplaceText(startLoc, strlen("break"), buf);

return nullptr;
1618}

1620void RewriteModernObjC::ConvertSourceLocationToLineDirective(
                                        SourceLocation Loc,
                                        std::string &LineString) {
if (Loc.isFileID() && GenerateLineInfo) {
  LineString += "\n#line ";
  PresumedLoc PLoc = SM->getPresumedLoc(Loc);
  LineString += utostr(PLoc.getLine());
  LineString += " \"";
  LineString += Lexer::Stringify(PLoc.getFilename());
  LineString += "\"\n";
}
1631}

1633/// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach
1634/// statement to continue with its inner synthesized loop.
1635///
1636Stmt *RewriteModernObjC::RewriteContinueStmt(ContinueStmt *S) {
if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
  return S;
// replace continue with goto __continue_label
std::string buf;

SourceLocation startLoc = S->getBeginLoc();
buf = "goto __continue_label_";
buf += utostr(ObjCBcLabelNo.back());
ReplaceText(startLoc, strlen("continue"), buf);

return nullptr;
1648}

1650/// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement.
1651///  It rewrites:
1652/// for ( type elem in collection) { stmts; }

1654/// Into:
1655/// {
1656///   type elem;
1657///   struct __objcFastEnumerationState enumState = { 0 };
1658///   id __rw_items[16];
1659///   id l_collection = (id)collection;
1660///   NSUInteger limit = [l_collection countByEnumeratingWithState:&enumState
1661///                                       objects:__rw_items count:16];
1662/// if (limit) {
1663///   unsigned long startMutations = *enumState.mutationsPtr;
1664///   do {
1665///        unsigned long counter = 0;
1666///        do {
1667///             if (startMutations != *enumState.mutationsPtr)
1668///               objc_enumerationMutation(l_collection);
1669///             elem = (type)enumState.itemsPtr[counter++];
1670///             stmts;
1671///             __continue_label: ;
1672///        } while (counter < limit);
1673///   } while ((limit = [l_collection countByEnumeratingWithState:&enumState
1674///                                  objects:__rw_items count:16]));
1675///   elem = nil;
1676///   __break_label: ;
1677///  }
1678///  else
1679///       elem = nil;
1680///  }
1681///
1682Stmt *RewriteModernObjC::RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
                                              SourceLocation OrigEnd) {
assert(!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty")((!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty"
) ? static_cast<void> (0) : __assert_fail ("!Stmts.empty() && \"ObjCForCollectionStmt - Statement stack empty\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1684, __PRETTY_FUNCTION__));
assert(isa<ObjCForCollectionStmt>(Stmts.back()) &&((isa<ObjCForCollectionStmt>(Stmts.back()) && "ObjCForCollectionStmt Statement stack mismatch"
) ? static_cast<void> (0) : __assert_fail ("isa<ObjCForCollectionStmt>(Stmts.back()) && \"ObjCForCollectionStmt Statement stack mismatch\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1686, __PRETTY_FUNCTION__))
       "ObjCForCollectionStmt Statement stack mismatch")((isa<ObjCForCollectionStmt>(Stmts.back()) && "ObjCForCollectionStmt Statement stack mismatch"
) ? static_cast<void> (0) : __assert_fail ("isa<ObjCForCollectionStmt>(Stmts.back()) && \"ObjCForCollectionStmt Statement stack mismatch\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1686, __PRETTY_FUNCTION__));
assert(!ObjCBcLabelNo.empty() &&((!ObjCBcLabelNo.empty() && "ObjCForCollectionStmt - Label No stack empty"
) ? static_cast<void> (0) : __assert_fail ("!ObjCBcLabelNo.empty() && \"ObjCForCollectionStmt - Label No stack empty\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1688, __PRETTY_FUNCTION__))
       "ObjCForCollectionStmt - Label No stack empty")((!ObjCBcLabelNo.empty() && "ObjCForCollectionStmt - Label No stack empty"
) ? static_cast<void> (0) : __assert_fail ("!ObjCBcLabelNo.empty() && \"ObjCForCollectionStmt - Label No stack empty\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1688, __PRETTY_FUNCTION__));

SourceLocation startLoc = S->getBeginLoc();
const char *startBuf = SM->getCharacterData(startLoc);
StringRef elementName;
std::string elementTypeAsString;
std::string buf;
// line directive first.
SourceLocation ForEachLoc = S->getForLoc();
ConvertSourceLocationToLineDirective(ForEachLoc, buf);
buf += "{\n\t";
if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) {
  // type elem;
  NamedDecl* D = cast<NamedDecl>(DS->getSingleDecl());
  QualType ElementType = cast<ValueDecl>(D)->getType();
  if (ElementType->isObjCQualifiedIdType() ||
      ElementType->isObjCQualifiedInterfaceType())
    // Simply use 'id' for all qualified types.
    elementTypeAsString = "id";
  else
    elementTypeAsString = ElementType.getAsString(Context->getPrintingPolicy());
  buf += elementTypeAsString;
  buf += " ";
  elementName = D->getName();
  buf += elementName;
  buf += ";\n\t";
}
else {
  DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement());
  elementName = DR->getDecl()->getName();
  ValueDecl *VD = DR->getDecl();
  if (VD->getType()->isObjCQualifiedIdType() ||
      VD->getType()->isObjCQualifiedInterfaceType())
    // Simply use 'id' for all qualified types.
    elementTypeAsString = "id";
  else
    elementTypeAsString = VD->getType().getAsString(Context->getPrintingPolicy());
}

// struct __objcFastEnumerationState enumState = { 0 };
buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t";
// id __rw_items[16];
buf += "id __rw_items[16];\n\t";
// id l_collection = (id)
buf += "id l_collection = (id)";
// Find start location of 'collection' the hard way!
const char *startCollectionBuf = startBuf;
startCollectionBuf += 3;  // skip 'for'
startCollectionBuf = strchr(startCollectionBuf, '(');
startCollectionBuf++; // skip '('
// find 'in' and skip it.
while (*startCollectionBuf != ' ' ||
       *(startCollectionBuf+1) != 'i' || *(startCollectionBuf+2) != 'n' ||
       (*(startCollectionBuf+3) != ' ' &&
        *(startCollectionBuf+3) != '[' && *(startCollectionBuf+3) != '('))
  startCollectionBuf++;
startCollectionBuf += 3;

// Replace: "for (type element in" with string constructed thus far.
ReplaceText(startLoc, startCollectionBuf - startBuf, buf);
// Replace ')' in for '(' type elem in collection ')' with ';'
SourceLocation rightParenLoc = S->getRParenLoc();
const char *rparenBuf = SM->getCharacterData(rightParenLoc);
SourceLocation lparenLoc = startLoc.getLocWithOffset(rparenBuf-startBuf);
buf = ";\n\t";

// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
//                                   objects:__rw_items count:16];
// which is synthesized into:
// NSUInteger limit =
// ((NSUInteger (*)
//  (id, SEL, struct __objcFastEnumerationState *, id *, NSUInteger))
//  (void *)objc_msgSend)((id)l_collection,
//                        sel_registerName(
//                          "countByEnumeratingWithState:objects:count:"),
//                        (struct __objcFastEnumerationState *)&state,
//                        (id *)__rw_items, (NSUInteger)16);
buf += "_WIN_NSUInteger limit =\n\t\t";
SynthCountByEnumWithState(buf);
buf += ";\n\t";
/// if (limit) {
///   unsigned long startMutations = *enumState.mutationsPtr;
///   do {
///        unsigned long counter = 0;
///        do {
///             if (startMutations != *enumState.mutationsPtr)
///               objc_enumerationMutation(l_collection);
///             elem = (type)enumState.itemsPtr[counter++];
buf += "if (limit) {\n\t";
buf += "unsigned long startMutations = *enumState.mutationsPtr;\n\t";
buf += "do {\n\t\t";
buf += "unsigned long counter = 0;\n\t\t";
buf += "do {\n\t\t\t";
buf += "if (startMutations != *enumState.mutationsPtr)\n\t\t\t\t";
buf += "objc_enumerationMutation(l_collection);\n\t\t\t";
buf += elementName;
buf += " = (";
buf += elementTypeAsString;
buf += ")enumState.itemsPtr[counter++];";
// Replace ')' in for '(' type elem in collection ')' with all of these.
ReplaceText(lparenLoc, 1, buf);

///            __continue_label: ;
///        } while (counter < limit);
///   } while ((limit = [l_collection countByEnumeratingWithState:&enumState
///                                  objects:__rw_items count:16]));
///   elem = nil;
///   __break_label: ;
///  }
///  else
///       elem = nil;
///  }
///
buf = ";\n\t";
buf += "__continue_label_";
buf += utostr(ObjCBcLabelNo.back());
buf += ": ;";
buf += "\n\t\t";
buf += "} while (counter < limit);\n\t";
buf += "} while ((limit = ";
SynthCountByEnumWithState(buf);
buf += "));\n\t";
buf += elementName;
buf += " = ((";
buf += elementTypeAsString;
buf += ")0);\n\t";
buf += "__break_label_";
buf += utostr(ObjCBcLabelNo.back());
buf += ": ;\n\t";
buf += "}\n\t";
buf += "else\n\t\t";
buf += elementName;
buf += " = ((";
buf += elementTypeAsString;
buf += ")0);\n\t";
buf += "}\n";

// Insert all these *after* the statement body.
// FIXME: If this should support Obj-C++, support CXXTryStmt
if (isa<CompoundStmt>(S->getBody())) {
  SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(1);
  InsertText(endBodyLoc, buf);
} else {
  /* Need to treat single statements specially. For example:
   *
   *     for (A *a in b) if (stuff()) break;
   *     for (A *a in b) xxxyy;
   *
   * The following code simply scans ahead to the semi to find the actual end.
   */
  const char *stmtBuf = SM->getCharacterData(OrigEnd);
  const char *semiBuf = strchr(stmtBuf, ';');
  assert(semiBuf && "Can't find ';'")((semiBuf && "Can't find ';'") ? static_cast<void>
 (0) : __assert_fail ("semiBuf && \"Can't find ';'\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1840, __PRETTY_FUNCTION__));
  SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(semiBuf-stmtBuf+1);
  InsertText(endBodyLoc, buf);
}
Stmts.pop_back();
ObjCBcLabelNo.pop_back();
return nullptr;
1847}

1849static void Write_RethrowObject(std::string &buf) {
buf += "{ struct _FIN { _FIN(id reth) : rethrow(reth) {}\n";
buf += "\t~_FIN() { if (rethrow) objc_exception_throw(rethrow); }\n";
buf += "\tid rethrow;\n";
buf += "\t} _fin_force_rethow(_rethrow);";
1854}

1856/// RewriteObjCSynchronizedStmt -
1857/// This routine rewrites @synchronized(expr) stmt;
1858/// into:
1859/// objc_sync_enter(expr);
1860/// @try stmt @finally { objc_sync_exit(expr); }
1861///
1862Stmt *RewriteModernObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
// Get the start location and compute the semi location.
SourceLocation startLoc = S->getBeginLoc();
const char *startBuf = SM->getCharacterData(startLoc);

assert((*startBuf == '@') && "bogus @synchronized location")(((*startBuf == '@') && "bogus @synchronized location"
) ? static_cast<void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @synchronized location\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1867, __PRETTY_FUNCTION__));

std::string buf;
SourceLocation SynchLoc = S->getAtSynchronizedLoc();
ConvertSourceLocationToLineDirective(SynchLoc, buf);
buf += "{ id _rethrow = 0; id _sync_obj = (id)";

const char *lparenBuf = startBuf;
while (*lparenBuf != '(') lparenBuf++;
ReplaceText(startLoc, lparenBuf-startBuf+1, buf);

buf = "; objc_sync_enter(_sync_obj);\n";
buf += "try {\n\tstruct _SYNC_EXIT { _SYNC_EXIT(id arg) : sync_exit(arg) {}";
buf += "\n\t~_SYNC_EXIT() {objc_sync_exit(sync_exit);}";
buf += "\n\tid sync_exit;";
buf += "\n\t} _sync_exit(_sync_obj);\n";

// We can't use S->getSynchExpr()->getEndLoc() to find the end location, since
// the sync expression is typically a message expression that's already
// been rewritten! (which implies the SourceLocation's are invalid).
SourceLocation RParenExprLoc = S->getSynchBody()->getBeginLoc();
const char *RParenExprLocBuf = SM->getCharacterData(RParenExprLoc);
while (*RParenExprLocBuf != ')') RParenExprLocBuf--;
RParenExprLoc = startLoc.getLocWithOffset(RParenExprLocBuf-startBuf);

SourceLocation LBranceLoc = S->getSynchBody()->getBeginLoc();
const char *LBraceLocBuf = SM->getCharacterData(LBranceLoc);
assert (*LBraceLocBuf == '{')((*LBraceLocBuf == '{') ? static_cast<void> (0) : __assert_fail
 ("*LBraceLocBuf == '{'", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1894, __PRETTY_FUNCTION__));
ReplaceText(RParenExprLoc, (LBraceLocBuf - SM->getCharacterData(RParenExprLoc) + 1), buf);

SourceLocation startRBraceLoc = S->getSynchBody()->getEndLoc();
assert((*SM->getCharacterData(startRBraceLoc) == '}') &&(((*SM->getCharacterData(startRBraceLoc) == '}') &&
 "bogus @synchronized block") ? static_cast<void> (0) :
 __assert_fail ("(*SM->getCharacterData(startRBraceLoc) == '}') && \"bogus @synchronized block\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1899, __PRETTY_FUNCTION__))
       "bogus @synchronized block")(((*SM->getCharacterData(startRBraceLoc) == '}') &&
 "bogus @synchronized block") ? static_cast<void> (0) :
 __assert_fail ("(*SM->getCharacterData(startRBraceLoc) == '}') && \"bogus @synchronized block\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1899, __PRETTY_FUNCTION__));

buf = "} catch (id e) {_rethrow = e;}\n";
Write_RethrowObject(buf);
buf += "}\n";
buf += "}\n";

ReplaceText(startRBraceLoc, 1, buf);

return nullptr;
1909}

1911void RewriteModernObjC::WarnAboutReturnGotoStmts(Stmt *S)
1912{
// Perform a bottom up traversal of all children.
for (Stmt *SubStmt : S->children())
  if (SubStmt)
    WarnAboutReturnGotoStmts(SubStmt);

if (isa<ReturnStmt>(S) || isa<GotoStmt>(S)) {
  Diags.Report(Context->getFullLoc(S->getBeginLoc()),
               TryFinallyContainsReturnDiag);
}
1922}

1924Stmt *RewriteModernObjC::RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt  *S) {
SourceLocation startLoc = S->getAtLoc();
ReplaceText(startLoc, strlen("@autoreleasepool"), "/* @autoreleasepool */");
ReplaceText(S->getSubStmt()->getBeginLoc(), 1,
            "{ __AtAutoreleasePool __autoreleasepool; ");

return nullptr;
1931}

1933Stmt *RewriteModernObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt();
bool noCatch = S->getNumCatchStmts() == 0;
std::string buf;
SourceLocation TryLocation = S->getAtTryLoc();
ConvertSourceLocationToLineDirective(TryLocation, buf);

if (finalStmt) {
  if (noCatch)
    buf += "{ id volatile _rethrow = 0;\n";
  else {
    buf += "{ id volatile _rethrow = 0;\ntry {\n";
  }
}
// Get the start location and compute the semi location.
SourceLocation startLoc = S->getBeginLoc();
const char *startBuf = SM->getCharacterData(startLoc);

assert((*startBuf == '@') && "bogus @try location")(((*startBuf == '@') && "bogus @try location") ? static_cast
<void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @try location\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1951, __PRETTY_FUNCTION__));
if (finalStmt)
  ReplaceText(startLoc, 1, buf);
else
  // @try -> try
  ReplaceText(startLoc, 1, "");

for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) {
  ObjCAtCatchStmt *Catch = S->getCatchStmt(I);
  VarDecl *catchDecl = Catch->getCatchParamDecl();

  startLoc = Catch->getBeginLoc();
  bool AtRemoved = false;
  if (catchDecl) {
    QualType t = catchDecl->getType();
    if (const ObjCObjectPointerType *Ptr = t->getAs<ObjCObjectPointerType>()) {
      // Should be a pointer to a class.
      ObjCInterfaceDecl *IDecl = Ptr->getObjectType()->getInterface();
      if (IDecl) {
        std::string Result;
        ConvertSourceLocationToLineDirective(Catch->getBeginLoc(), Result);

        startBuf = SM->getCharacterData(startLoc);
        assert((*startBuf == '@') && "bogus @catch location")(((*startBuf == '@') && "bogus @catch location") ? static_cast
<void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @catch location\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 1974, __PRETTY_FUNCTION__));
        SourceLocation rParenLoc = Catch->getRParenLoc();
        const char *rParenBuf = SM->getCharacterData(rParenLoc);

        // _objc_exc_Foo *_e as argument to catch.
        Result += "catch (_objc_exc_"; Result += IDecl->getNameAsString();
        Result += " *_"; Result += catchDecl->getNameAsString();
        Result += ")";
        ReplaceText(startLoc, rParenBuf-startBuf+1, Result);
        // Foo *e = (Foo *)_e;
        Result.clear();
        Result = "{ ";
        Result += IDecl->getNameAsString();
        Result += " *"; Result += catchDecl->getNameAsString();
        Result += " = ("; Result += IDecl->getNameAsString(); Result += "*)";
        Result += "_"; Result += catchDecl->getNameAsString();

        Result += "; ";
        SourceLocation lBraceLoc = Catch->getCatchBody()->getBeginLoc();
        ReplaceText(lBraceLoc, 1, Result);
        AtRemoved = true;
      }
    }
  }
  if (!AtRemoved)
    // @catch -> catch
    ReplaceText(startLoc, 1, "");

}
if (finalStmt) {
  buf.clear();
  SourceLocation FinallyLoc = finalStmt->getBeginLoc();

  if (noCatch) {
    ConvertSourceLocationToLineDirective(FinallyLoc, buf);
    buf += "catch (id e) {_rethrow = e;}\n";
  }
  else {
    buf += "}\n";
    ConvertSourceLocationToLineDirective(FinallyLoc, buf);
    buf += "catch (id e) {_rethrow = e;}\n";
  }

  SourceLocation startFinalLoc = finalStmt->getBeginLoc();
  ReplaceText(startFinalLoc, 8, buf);
  Stmt *body = finalStmt->getFinallyBody();
  SourceLocation startFinalBodyLoc = body->getBeginLoc();
  buf.clear();
  Write_RethrowObject(buf);
  ReplaceText(startFinalBodyLoc, 1, buf);

  SourceLocation endFinalBodyLoc = body->getEndLoc();
  ReplaceText(endFinalBodyLoc, 1, "}\n}");
  // Now check for any return/continue/go statements within the @try.
  WarnAboutReturnGotoStmts(S->getTryBody());
}

return nullptr;
2032}

2034// This can't be done with ReplaceStmt(S, ThrowExpr), since
2035// the throw expression is typically a message expression that's already
2036// been rewritten! (which implies the SourceLocation's are invalid).
2037Stmt *RewriteModernObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
// Get the start location and compute the semi location.
SourceLocation startLoc = S->getBeginLoc();
const char *startBuf = SM->getCharacterData(startLoc);

assert((*startBuf == '@') && "bogus @throw location")(((*startBuf == '@') && "bogus @throw location") ? static_cast
<void> (0) : __assert_fail ("(*startBuf == '@') && \"bogus @throw location\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2042, __PRETTY_FUNCTION__));

std::string buf;
/* void objc_exception_throw(id) __attribute__((noreturn)); */
if (S->getThrowExpr())
  buf = "objc_exception_throw(";
else
  buf = "throw";

// handle "@  throw" correctly.
const char *wBuf = strchr(startBuf, 'w');
assert((*wBuf == 'w') && "@throw: can't find 'w'")(((*wBuf == 'w') && "@throw: can't find 'w'") ? static_cast
<void> (0) : __assert_fail ("(*wBuf == 'w') && \"@throw: can't find 'w'\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2053, __PRETTY_FUNCTION__));
ReplaceText(startLoc, wBuf-startBuf+1, buf);

SourceLocation endLoc = S->getEndLoc();
const char *endBuf = SM->getCharacterData(endLoc);
const char *semiBuf = strchr(endBuf, ';');
assert((*semiBuf == ';') && "@throw: can't find ';'")(((*semiBuf == ';') && "@throw: can't find ';'") ? static_cast
<void> (0) : __assert_fail ("(*semiBuf == ';') && \"@throw: can't find ';'\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2059, __PRETTY_FUNCTION__));
SourceLocation semiLoc = startLoc.getLocWithOffset(semiBuf-startBuf);
if (S->getThrowExpr())
  ReplaceText(semiLoc, 1, ");");
return nullptr;
2064}

2066Stmt *RewriteModernObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) {
// Create a new string expression.
std::string StrEncoding;
Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding);
Expr *Replacement = getStringLiteral(StrEncoding);
ReplaceStmt(Exp, Replacement);

// Replace this subexpr in the parent.
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
return Replacement;
2076}

2078Stmt *RewriteModernObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) {
if (!SelGetUidFunctionDecl)
  SynthSelGetUidFunctionDecl();
assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl")((SelGetUidFunctionDecl && "Can't find sel_registerName() decl"
) ? static_cast<void> (0) : __assert_fail ("SelGetUidFunctionDecl && \"Can't find sel_registerName() decl\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2081, __PRETTY_FUNCTION__));
// Create a call to sel_registerName("selName").
SmallVector<Expr*, 8> SelExprs;
SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
                                                SelExprs);
ReplaceStmt(Exp, SelExp);
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
return SelExp;
2090}

2092CallExpr *
2093RewriteModernObjC::SynthesizeCallToFunctionDecl(FunctionDecl *FD,
                                              ArrayRef<Expr *> Args,
                                              SourceLocation StartLoc,
                                              SourceLocation EndLoc) {
// Get the type, we will need to reference it in a couple spots.
QualType msgSendType = FD->getType();

// Create a reference to the objc_msgSend() declaration.
DeclRefExpr *DRE = new (Context) DeclRefExpr(*Context, FD, false, msgSendType,
                                             VK_LValue, SourceLocation());

// Now, we cast the reference to a pointer to the objc_msgSend type.
QualType pToFunc = Context->getPointerType(msgSendType);
ImplicitCastExpr *ICE =
  ImplicitCastExpr::Create(*Context, pToFunc, CK_FunctionToPointerDecay,
                           DRE, nullptr, VK_RValue);

const auto *FT = msgSendType->castAs<FunctionType>();
CallExpr *Exp = CallExpr::Create(
    *Context, ICE, Args, FT->getCallResultType(*Context), VK_RValue, EndLoc);
return Exp;
2114}

2116static bool scanForProtocolRefs(const char *startBuf, const char *endBuf,
                              const char *&startRef, const char *&endRef) {
while (startBuf < endBuf) {
  if (*startBuf == '<')
    startRef = startBuf; // mark the start.
  if (*startBuf == '>') {
    if (startRef && *startRef == '<') {
      endRef = startBuf; // mark the end.
      return true;
    }
    return false;
  }
  startBuf++;
}
return false;
2131}

2133static void scanToNextArgument(const char *&argRef) {
int angle = 0;
while (*argRef != ')' && (*argRef != ',' || angle > 0)) {
  if (*argRef == '<')
    angle++;
  else if (*argRef == '>')
    angle--;
  argRef++;
}
assert(angle == 0 && "scanToNextArgument - bad protocol type syntax")((angle == 0 && "scanToNextArgument - bad protocol type syntax"
) ? static_cast<void> (0) : __assert_fail ("angle == 0 && \"scanToNextArgument - bad protocol type syntax\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2142, __PRETTY_FUNCTION__));
2143}

2145bool RewriteModernObjC::needToScanForQualifiers(QualType T) {
if (T->isObjCQualifiedIdType())
  return true;
if (const PointerType *PT = T->getAs<PointerType>()) {
  if (PT->getPointeeType()->isObjCQualifiedIdType())
    return true;
}
if (T->isObjCObjectPointerType()) {
  T = T->getPointeeType();
  return T->isObjCQualifiedInterfaceType();
}
if (T->isArrayType()) {
  QualType ElemTy = Context->getBaseElementType(T);
  return needToScanForQualifiers(ElemTy);
}
return false;
2161}

2163void RewriteModernObjC::RewriteObjCQualifiedInterfaceTypes(Expr *E) {
QualType Type = E->getType();
if (needToScanForQualifiers(Type)) {
  SourceLocation Loc, EndLoc;

  if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) {
    Loc = ECE->getLParenLoc();
    EndLoc = ECE->getRParenLoc();
  } else {
    Loc = E->getBeginLoc();
    EndLoc = E->getEndLoc();
  }
  // This will defend against trying to rewrite synthesized expressions.
  if (Loc.isInvalid() || EndLoc.isInvalid())
    return;

  const char *startBuf = SM->getCharacterData(Loc);
  const char *endBuf = SM->getCharacterData(EndLoc);
  const char *startRef = nullptr, *endRef = nullptr;
  if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
    // Get the locations of the startRef, endRef.
    SourceLocation LessLoc = Loc.getLocWithOffset(startRef-startBuf);
    SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-startBuf+1);
    // Comment out the protocol references.
    InsertText(LessLoc, "/*");
    InsertText(GreaterLoc, "*/");
  }
}
2191}

2193void RewriteModernObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) {
SourceLocation Loc;
QualType Type;
const FunctionProtoType *proto = nullptr;
if (VarDecl *VD = dyn_cast<VarDecl>(Dcl)) {
  Loc = VD->getLocation();
  Type = VD->getType();
}
else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Dcl)) {
  Loc = FD->getLocation();
  // Check for ObjC 'id' and class types that have been adorned with protocol
  // information (id<p>, C<p>*). The protocol references need to be rewritten!
  const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
  assert(funcType && "missing function type")((funcType && "missing function type") ? static_cast<
void> (0) : __assert_fail ("funcType && \"missing function type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2206, __PRETTY_FUNCTION__));
  proto = dyn_cast<FunctionProtoType>(funcType);
  if (!proto)
    return;
  Type = proto->getReturnType();
}
else if (FieldDecl *FD = dyn_cast<FieldDecl>(Dcl)) {
  Loc = FD->getLocation();
  Type = FD->getType();
}
else if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(Dcl)) {
  Loc = TD->getLocation();
  Type = TD->getUnderlyingType();
}
else
  return;

if (needToScanForQualifiers(Type)) {
  // Since types are unique, we need to scan the buffer.

  const char *endBuf = SM->getCharacterData(Loc);
  const char *startBuf = endBuf;
  while (*startBuf != ';' && *startBuf != '<' && startBuf != MainFileStart)
    startBuf--; // scan backward (from the decl location) for return type.
  const char *startRef = nullptr, *endRef = nullptr;
  if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
    // Get the locations of the startRef, endRef.
    SourceLocation LessLoc = Loc.getLocWithOffset(startRef-endBuf);
    SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-endBuf+1);
    // Comment out the protocol references.
    InsertText(LessLoc, "/*");
    InsertText(GreaterLoc, "*/");
  }
}
if (!proto)
    return; // most likely, was a variable
// Now check arguments.
const char *startBuf = SM->getCharacterData(Loc);
const char *startFuncBuf = startBuf;
for (unsigned i = 0; i < proto->getNumParams(); i++) {
  if (needToScanForQualifiers(proto->getParamType(i))) {
    // Since types are unique, we need to scan the buffer.

    const char *endBuf = startBuf;
    // scan forward (from the decl location) for argument types.
    scanToNextArgument(endBuf);
    const char *startRef = nullptr, *endRef = nullptr;
    if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
      // Get the locations of the startRef, endRef.
      SourceLocation LessLoc =
        Loc.getLocWithOffset(startRef-startFuncBuf);
      SourceLocation GreaterLoc =
        Loc.getLocWithOffset(endRef-startFuncBuf+1);
      // Comment out the protocol references.
      InsertText(LessLoc, "/*");
      InsertText(GreaterLoc, "*/");
    }
    startBuf = ++endBuf;
  }
  else {
    // If the function name is derived from a macro expansion, then the
    // argument buffer will not follow the name. Need to speak with Chris.
    while (*startBuf && *startBuf != ')' && *startBuf != ',')
      startBuf++; // scan forward (from the decl location) for argument types.
    startBuf++;
  }
}
2273}

2275void RewriteModernObjC::RewriteTypeOfDecl(VarDecl *ND) {
QualType QT = ND->getType();
const Type* TypePtr = QT->getAs<Type>();
if (!isa<TypeOfExprType>(TypePtr))
  return;
while (isa<TypeOfExprType>(TypePtr)) {
  const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
  QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
  TypePtr = QT->getAs<Type>();
}
// FIXME. This will not work for multiple declarators; as in:
// __typeof__(a) b,c,d;
std::string TypeAsString(QT.getAsString(Context->getPrintingPolicy()));
SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
const char *startBuf = SM->getCharacterData(DeclLoc);
if (ND->getInit()) {
  std::string Name(ND->getNameAsString());
  TypeAsString += " " + Name + " = ";
  Expr *E = ND->getInit();
  SourceLocation startLoc;
  if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
    startLoc = ECE->getLParenLoc();
  else
    startLoc = E->getBeginLoc();
  startLoc = SM->getExpansionLoc(startLoc);
  const char *endBuf = SM->getCharacterData(startLoc);
  ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
}
else {
  SourceLocation X = ND->getEndLoc();
  X = SM->getExpansionLoc(X);
  const char *endBuf = SM->getCharacterData(X);
  ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
}
2309}

2311// SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str);
2312void RewriteModernObjC::SynthSelGetUidFunctionDecl() {
IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName");
SmallVector<QualType, 16> ArgTys;
ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
QualType getFuncType =
  getSimpleFunctionType(Context->getObjCSelType(), ArgTys);
SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                             SourceLocation(),
                                             SourceLocation(),
                                             SelGetUidIdent, getFuncType,
                                             nullptr, SC_Extern);
2323}

2325void RewriteModernObjC::RewriteFunctionDecl(FunctionDecl *FD) {
// declared in <objc/objc.h>
if (FD->getIdentifier() &&
    FD->getName() == "sel_registerName") {
  SelGetUidFunctionDecl = FD;
  return;
}
RewriteObjCQualifiedInterfaceTypes(FD);
2333}

2335void RewriteModernObjC::RewriteBlockPointerType(std::string& Str, QualType Type) {
std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
const char *argPtr = TypeString.c_str();
if (!strchr(argPtr, '^')) {
  Str += TypeString;
  return;
}
while (*argPtr) {
  Str += (*argPtr == '^' ? '*' : *argPtr);
  argPtr++;
}
2346}

2348// FIXME. Consolidate this routine with RewriteBlockPointerType.
2349void RewriteModernObjC::RewriteBlockPointerTypeVariable(std::string& Str,
                                                ValueDecl *VD) {
QualType Type = VD->getType();
std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
const char *argPtr = TypeString.c_str();
int paren = 0;
while (*argPtr) {
  switch (*argPtr) {
    case '(':
      Str += *argPtr;
      paren++;
      break;
    case ')':
      Str += *argPtr;
      paren--;
      break;
    case '^':
      Str += '*';
      if (paren == 1)
        Str += VD->getNameAsString();
      break;
    default:
      Str += *argPtr;
      break;
  }
  argPtr++;
}
2376}

2378void RewriteModernObjC::RewriteBlockLiteralFunctionDecl(FunctionDecl *FD) {
SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(funcType);
if (!proto)
  return;
QualType Type = proto->getReturnType();
std::string FdStr = Type.getAsString(Context->getPrintingPolicy());
FdStr += " ";
FdStr += FD->getName();
FdStr +=  "(";
unsigned numArgs = proto->getNumParams();
for (unsigned i = 0; i < numArgs; i++) {
  QualType ArgType = proto->getParamType(i);
RewriteBlockPointerType(FdStr, ArgType);
if (i+1 < numArgs)
  FdStr += ", ";
}
if (FD->isVariadic()) {
  FdStr +=  (numArgs > 0) ? ", ...);\n" : "...);\n";
}
else
  FdStr +=  ");\n";
InsertText(FunLocStart, FdStr);
2402}

2404// SynthSuperConstructorFunctionDecl - id __rw_objc_super(id obj, id super);
2405void RewriteModernObjC::SynthSuperConstructorFunctionDecl() {
if (SuperConstructorFunctionDecl)
  return;
IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super");
SmallVector<QualType, 16> ArgTys;
QualType argT = Context->getObjCIdType();
assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast
<void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2411, __PRETTY_FUNCTION__));
ArgTys.push_back(argT);
ArgTys.push_back(argT);
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
                                             ArgTys);
SuperConstructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                                   SourceLocation(),
                                                   SourceLocation(),
                                                   msgSendIdent, msgSendType,
                                                   nullptr, SC_Extern);
2421}

2423// SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...);
2424void RewriteModernObjC::SynthMsgSendFunctionDecl() {
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend");
SmallVector<QualType, 16> ArgTys;
QualType argT = Context->getObjCIdType();
assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast
<void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2428, __PRETTY_FUNCTION__));
ArgTys.push_back(argT);
argT = Context->getObjCSelType();
assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast
<void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2431, __PRETTY_FUNCTION__));
ArgTys.push_back(argT);
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
                                             ArgTys, /*variadic=*/true);
MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                           SourceLocation(),
                                           SourceLocation(),
                                           msgSendIdent, msgSendType, nullptr,
                                           SC_Extern);
2440}

2442// SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(void);
2443void RewriteModernObjC::SynthMsgSendSuperFunctionDecl() {
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper");
SmallVector<QualType, 2> ArgTys;
ArgTys.push_back(Context->VoidTy);
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
                                             ArgTys, /*variadic=*/true);
MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                                SourceLocation(),
                                                SourceLocation(),
                                                msgSendIdent, msgSendType,
                                                nullptr, SC_Extern);
2454}

2456// SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...);
2457void RewriteModernObjC::SynthMsgSendStretFunctionDecl() {
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret");
SmallVector<QualType, 16> ArgTys;
QualType argT = Context->getObjCIdType();
assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast
<void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2461, __PRETTY_FUNCTION__));
ArgTys.push_back(argT);
argT = Context->getObjCSelType();
assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast
<void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2464, __PRETTY_FUNCTION__));
ArgTys.push_back(argT);
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
                                             ArgTys, /*variadic=*/true);
MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                                SourceLocation(),
                                                SourceLocation(),
                                                msgSendIdent, msgSendType,
                                                nullptr, SC_Extern);
2473}

2475// SynthMsgSendSuperStretFunctionDecl -
2476// id objc_msgSendSuper_stret(void);
2477void RewriteModernObjC::SynthMsgSendSuperStretFunctionDecl() {
IdentifierInfo *msgSendIdent =
  &Context->Idents.get("objc_msgSendSuper_stret");
SmallVector<QualType, 2> ArgTys;
ArgTys.push_back(Context->VoidTy);
QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
                                             ArgTys, /*variadic=*/true);
MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                                     SourceLocation(),
                                                     SourceLocation(),
                                                     msgSendIdent,
                                                     msgSendType, nullptr,
                                                     SC_Extern);
2490}

2492// SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...);
2493void RewriteModernObjC::SynthMsgSendFpretFunctionDecl() {
IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret");
SmallVector<QualType, 16> ArgTys;
QualType argT = Context->getObjCIdType();
assert(!argT.isNull() && "Can't find 'id' type")((!argT.isNull() && "Can't find 'id' type") ? static_cast
<void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'id' type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2497, __PRETTY_FUNCTION__));
ArgTys.push_back(argT);
argT = Context->getObjCSelType();
assert(!argT.isNull() && "Can't find 'SEL' type")((!argT.isNull() && "Can't find 'SEL' type") ? static_cast
<void> (0) : __assert_fail ("!argT.isNull() && \"Can't find 'SEL' type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2500, __PRETTY_FUNCTION__));
ArgTys.push_back(argT);
QualType msgSendType = getSimpleFunctionType(Context->DoubleTy,
                                             ArgTys, /*variadic=*/true);
MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                                SourceLocation(),
                                                SourceLocation(),
                                                msgSendIdent, msgSendType,
                                                nullptr, SC_Extern);
2509}

2511// SynthGetClassFunctionDecl - Class objc_getClass(const char *name);
2512void RewriteModernObjC::SynthGetClassFunctionDecl() {
IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass");
SmallVector<QualType, 16> ArgTys;
ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
                                              ArgTys);
GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                            SourceLocation(),
                                            SourceLocation(),
                                            getClassIdent, getClassType,
                                            nullptr, SC_Extern);
2523}

2525// SynthGetSuperClassFunctionDecl - Class class_getSuperclass(Class cls);
2526void RewriteModernObjC::SynthGetSuperClassFunctionDecl() {
IdentifierInfo *getSuperClassIdent =
  &Context->Idents.get("class_getSuperclass");
SmallVector<QualType, 16> ArgTys;
ArgTys.push_back(Context->getObjCClassType());
QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
                                              ArgTys);
GetSuperClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                                 SourceLocation(),
                                                 SourceLocation(),
                                                 getSuperClassIdent,
                                                 getClassType, nullptr,
                                                 SC_Extern);
2539}

2541// SynthGetMetaClassFunctionDecl - Class objc_getMetaClass(const char *name);
2542void RewriteModernObjC::SynthGetMetaClassFunctionDecl() {
IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass");
SmallVector<QualType, 16> ArgTys;
ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
                                              ArgTys);
GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
                                                SourceLocation(),
                                                SourceLocation(),
                                                getClassIdent, getClassType,
                                                nullptr, SC_Extern);
2553}

2555Stmt *RewriteModernObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) {
assert (Exp != nullptr && "Expected non-null ObjCStringLiteral")((Exp != nullptr && "Expected non-null ObjCStringLiteral"
) ? static_cast<void> (0) : __assert_fail ("Exp != nullptr && \"Expected non-null ObjCStringLiteral\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 2556, __PRETTY_FUNCTION__));
QualType strType = getConstantStringStructType();

std::string S = "__NSConstantStringImpl_";

std::string tmpName = InFileName;
unsigned i;
for (i=0; i < tmpName.length(); i++) {
  char c = tmpName.at(i);
  // replace any non-alphanumeric characters with '_'.
  if (!isAlphanumeric(c))
    tmpName[i] = '_';
}
S += tmpName;
S += "_";
S += utostr(NumObjCStringLiterals++);

Preamble += "static __NSConstantStringImpl " + S;
Preamble += " __attribute__ ((section (\"__DATA, __cfstring\"))) = {__CFConstantStringClassReference,";
Preamble += "0x000007c8,"; // utf8_str
// The pretty printer for StringLiteral handles escape characters properly.
std::string prettyBufS;
llvm::raw_string_ostream prettyBuf(prettyBufS);
Exp->getString()->printPretty(prettyBuf, nullptr, PrintingPolicy(LangOpts));
Preamble += prettyBuf.str();
Preamble += ",";
Preamble += utostr(Exp->getString()->getByteLength()) + "};\n";

VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
                                 SourceLocation(), &Context->Idents.get(S),
                                 strType, nullptr, SC_Static);
DeclRefExpr *DRE = new (Context)
    DeclRefExpr(*Context, NewVD, false, strType, VK_LValue, SourceLocation());
Expr *Unop = new (Context)
    UnaryOperator(DRE, UO_AddrOf, Context->getPointerType(DRE->getType()),
                  VK_RValue, OK_Ordinary, SourceLocation(), false);
// cast to NSConstantString *
CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Exp->getType(),
                                          CK_CPointerToObjCPointerCast, Unop);
ReplaceStmt(Exp, cast);
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
return cast;
2598}

2600Stmt *RewriteModernObjC::RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp) {
unsigned IntSize =
  static_cast<unsigned>(Context->getTypeSize(Context->IntTy));

Expr *FlagExp = IntegerLiteral::Create(*Context,
                                       llvm::APInt(IntSize, Exp->getValue()),
                                       Context->IntTy, Exp->getLocation());
CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Context->ObjCBuiltinBoolTy,
                                          CK_BitCast, FlagExp);
ParenExpr *PE = new (Context) ParenExpr(Exp->getLocation(), Exp->getExprLoc(),
                                        cast);
ReplaceStmt(Exp, PE);
return PE;
2613}

2615Stmt *RewriteModernObjC::RewriteObjCBoxedExpr(ObjCBoxedExpr *Exp) {
// synthesize declaration of helper functions needed in this routine.
if (!SelGetUidFunctionDecl)
  SynthSelGetUidFunctionDecl();
// use objc_msgSend() for all.
if (!MsgSendFunctionDecl)
  SynthMsgSendFunctionDecl();
if (!GetClassFunctionDecl)
  SynthGetClassFunctionDecl();

FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
SourceLocation StartLoc = Exp->getBeginLoc();
SourceLocation EndLoc = Exp->getEndLoc();

// Synthesize a call to objc_msgSend().
SmallVector<Expr*, 4> MsgExprs;
SmallVector<Expr*, 4> ClsExprs;

// Create a call to objc_getClass("<BoxingClass>"). It will be the 1st argument.
ObjCMethodDecl *BoxingMethod = Exp->getBoxingMethod();
ObjCInterfaceDecl *BoxingClass = BoxingMethod->getClassInterface();

IdentifierInfo *clsName = BoxingClass->getIdentifier();
ClsExprs.push_back(getStringLiteral(clsName->getName()));
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
                                             StartLoc, EndLoc);
MsgExprs.push_back(Cls);

// Create a call to sel_registerName("<BoxingMethod>:"), etc.
// it will be the 2nd argument.
SmallVector<Expr*, 4> SelExprs;
SelExprs.push_back(
    getStringLiteral(BoxingMethod->getSelector().getAsString()));
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
                                                SelExprs, StartLoc, EndLoc);
MsgExprs.push_back(SelExp);

// User provided sub-expression is the 3rd, and last, argument.
Expr *subExpr  = Exp->getSubExpr();
if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(subExpr)) {
  QualType type = ICE->getType();
  const Expr *SubExpr = ICE->IgnoreParenImpCasts();
  CastKind CK = CK_BitCast;
  if (SubExpr->getType()->isIntegralType(*Context) && type->isBooleanType())
    CK = CK_IntegralToBoolean;
  subExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, subExpr);
}
MsgExprs.push_back(subExpr);

SmallVector<QualType, 4> ArgTypes;
ArgTypes.push_back(Context->getObjCClassType());
ArgTypes.push_back(Context->getObjCSelType());
for (const auto PI : BoxingMethod->parameters())
  ArgTypes.push_back(PI->getType());

QualType returnType = Exp->getType();
// Get the type, we will need to reference it in a couple spots.
QualType msgSendType = MsgSendFlavor->getType();

// Create a reference to the objc_msgSend() declaration.
DeclRefExpr *DRE = new (Context) DeclRefExpr(
    *Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());

CastExpr *cast = NoTypeInfoCStyleCastExpr(
    Context, Context->getPointerType(Context->VoidTy), CK_BitCast, DRE);

// Now do the "normal" pointer to function cast.
QualType castType =
  getSimpleFunctionType(returnType, ArgTypes, BoxingMethod->isVariadic());
castType = Context->getPointerType(castType);
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
                                cast);

// Don't forget the parens to enforce the proper binding.
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);

const FunctionType *FT = msgSendType->getAs<FunctionType>();
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
                                VK_RValue, EndLoc);
ReplaceStmt(Exp, CE);
return CE;
2696}

2698Stmt *RewriteModernObjC::RewriteObjCArrayLiteralExpr(ObjCArrayLiteral *Exp) {
// synthesize declaration of helper functions needed in this routine.
if (!SelGetUidFunctionDecl)
  SynthSelGetUidFunctionDecl();
// use objc_msgSend() for all.
if (!MsgSendFunctionDecl)
  SynthMsgSendFunctionDecl();
if (!GetClassFunctionDecl)
  SynthGetClassFunctionDecl();

FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
SourceLocation StartLoc = Exp->getBeginLoc();
SourceLocation EndLoc = Exp->getEndLoc();

// Build the expression: __NSContainer_literal(int, ...).arr
QualType IntQT = Context->IntTy;
QualType NSArrayFType =
  getSimpleFunctionType(Context->VoidTy, IntQT, true);
std::string NSArrayFName("__NSContainer_literal");
FunctionDecl *NSArrayFD = SynthBlockInitFunctionDecl(NSArrayFName);
DeclRefExpr *NSArrayDRE = new (Context) DeclRefExpr(
    *Context, NSArrayFD, false, NSArrayFType, VK_RValue, SourceLocation());

SmallVector<Expr*, 16> InitExprs;
unsigned NumElements = Exp->getNumElements();
unsigned UnsignedIntSize =
  static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
Expr *count = IntegerLiteral::Create(*Context,
                                     llvm::APInt(UnsignedIntSize, NumElements),
                                     Context->UnsignedIntTy, SourceLocation());
InitExprs.push_back(count);
for (unsigned i = 0; i < NumElements; i++)
  InitExprs.push_back(Exp->getElement(i));
Expr *NSArrayCallExpr =
    CallExpr::Create(*Context, NSArrayDRE, InitExprs, NSArrayFType, VK_LValue,
                     SourceLocation());

FieldDecl *ARRFD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                  SourceLocation(),
                                  &Context->Idents.get("arr"),
                                  Context->getPointerType(Context->VoidPtrTy),
                                  nullptr, /*BitWidth=*/nullptr,
                                  /*Mutable=*/true, ICIS_NoInit);
MemberExpr *ArrayLiteralME =
    MemberExpr::CreateImplicit(*Context, NSArrayCallExpr, false, ARRFD,
                               ARRFD->getType(), VK_LValue, OK_Ordinary);
QualType ConstIdT = Context->getObjCIdType().withConst();
CStyleCastExpr * ArrayLiteralObjects =
  NoTypeInfoCStyleCastExpr(Context,
                           Context->getPointerType(ConstIdT),
                           CK_BitCast,
                           ArrayLiteralME);

// Synthesize a call to objc_msgSend().
SmallVector<Expr*, 32> MsgExprs;
SmallVector<Expr*, 4> ClsExprs;
QualType expType = Exp->getType();

// Create a call to objc_getClass("NSArray"). It will be th 1st argument.
ObjCInterfaceDecl *Class =
  expType->getPointeeType()->castAs<ObjCObjectType>()->getInterface();

IdentifierInfo *clsName = Class->getIdentifier();
ClsExprs.push_back(getStringLiteral(clsName->getName()));
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
                                             StartLoc, EndLoc);
MsgExprs.push_back(Cls);

// Create a call to sel_registerName("arrayWithObjects:count:").
// it will be the 2nd argument.
SmallVector<Expr*, 4> SelExprs;
ObjCMethodDecl *ArrayMethod = Exp->getArrayWithObjectsMethod();
SelExprs.push_back(
    getStringLiteral(ArrayMethod->getSelector().getAsString()));
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
                                                SelExprs, StartLoc, EndLoc);
MsgExprs.push_back(SelExp);

// (const id [])objects
MsgExprs.push_back(ArrayLiteralObjects);

// (NSUInteger)cnt
Expr *cnt = IntegerLiteral::Create(*Context,
                                   llvm::APInt(UnsignedIntSize, NumElements),
                                   Context->UnsignedIntTy, SourceLocation());
MsgExprs.push_back(cnt);

SmallVector<QualType, 4> ArgTypes;
ArgTypes.push_back(Context->getObjCClassType());
ArgTypes.push_back(Context->getObjCSelType());
for (const auto *PI : ArrayMethod->parameters())
  ArgTypes.push_back(PI->getType());

QualType returnType = Exp->getType();
// Get the type, we will need to reference it in a couple spots.
QualType msgSendType = MsgSendFlavor->getType();

// Create a reference to the objc_msgSend() declaration.
DeclRefExpr *DRE = new (Context) DeclRefExpr(
    *Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());

CastExpr *cast = NoTypeInfoCStyleCastExpr(
    Context, Context->getPointerType(Context->VoidTy), CK_BitCast, DRE);

// Now do the "normal" pointer to function cast.
QualType castType =
getSimpleFunctionType(returnType, ArgTypes, ArrayMethod->isVariadic());
castType = Context->getPointerType(castType);
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
                                cast);

// Don't forget the parens to enforce the proper binding.
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);

const FunctionType *FT = msgSendType->castAs<FunctionType>();
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
                                VK_RValue, EndLoc);
ReplaceStmt(Exp, CE);
return CE;
2817}

2819Stmt *RewriteModernObjC::RewriteObjCDictionaryLiteralExpr(ObjCDictionaryLiteral *Exp) {
// synthesize declaration of helper functions needed in this routine.
if (!SelGetUidFunctionDecl)
  SynthSelGetUidFunctionDecl();
// use objc_msgSend() for all.
if (!MsgSendFunctionDecl)
  SynthMsgSendFunctionDecl();
if (!GetClassFunctionDecl)
  SynthGetClassFunctionDecl();

FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
SourceLocation StartLoc = Exp->getBeginLoc();
SourceLocation EndLoc = Exp->getEndLoc();

// Build the expression: __NSContainer_literal(int, ...).arr
QualType IntQT = Context->IntTy;
QualType NSDictFType =
  getSimpleFunctionType(Context->VoidTy, IntQT, true);
std::string NSDictFName("__NSContainer_literal");
FunctionDecl *NSDictFD = SynthBlockInitFunctionDecl(NSDictFName);
DeclRefExpr *NSDictDRE = new (Context) DeclRefExpr(
    *Context, NSDictFD, false, NSDictFType, VK_RValue, SourceLocation());

SmallVector<Expr*, 16> KeyExprs;
SmallVector<Expr*, 16> ValueExprs;

unsigned NumElements = Exp->getNumElements();
unsigned UnsignedIntSize =
  static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
Expr *count = IntegerLiteral::Create(*Context,
                                     llvm::APInt(UnsignedIntSize, NumElements),
                                     Context->UnsignedIntTy, SourceLocation());
KeyExprs.push_back(count);
ValueExprs.push_back(count);
for (unsigned i = 0; i < NumElements; i++) {
  ObjCDictionaryElement Element = Exp->getKeyValueElement(i);
  KeyExprs.push_back(Element.Key);
  ValueExprs.push_back(Element.Value);
}

// (const id [])objects
Expr *NSValueCallExpr =
    CallExpr::Create(*Context, NSDictDRE, ValueExprs, NSDictFType, VK_LValue,
                     SourceLocation());

FieldDecl *ARRFD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                     SourceLocation(),
                                     &Context->Idents.get("arr"),
                                     Context->getPointerType(Context->VoidPtrTy),
                                     nullptr, /*BitWidth=*/nullptr,
                                     /*Mutable=*/true, ICIS_NoInit);
MemberExpr *DictLiteralValueME =
    MemberExpr::CreateImplicit(*Context, NSValueCallExpr, false, ARRFD,
                               ARRFD->getType(), VK_LValue, OK_Ordinary);
QualType ConstIdT = Context->getObjCIdType().withConst();
CStyleCastExpr * DictValueObjects =
  NoTypeInfoCStyleCastExpr(Context,
                           Context->getPointerType(ConstIdT),
                           CK_BitCast,
                           DictLiteralValueME);
// (const id <NSCopying> [])keys
Expr *NSKeyCallExpr = CallExpr::Create(
    *Context, NSDictDRE, KeyExprs, NSDictFType, VK_LValue, SourceLocation());

MemberExpr *DictLiteralKeyME =
    MemberExpr::CreateImplicit(*Context, NSKeyCallExpr, false, ARRFD,
                               ARRFD->getType(), VK_LValue, OK_Ordinary);

CStyleCastExpr * DictKeyObjects =
  NoTypeInfoCStyleCastExpr(Context,
                           Context->getPointerType(ConstIdT),
                           CK_BitCast,
                           DictLiteralKeyME);

// Synthesize a call to objc_msgSend().
SmallVector<Expr*, 32> MsgExprs;
SmallVector<Expr*, 4> ClsExprs;
QualType expType = Exp->getType();

// Create a call to objc_getClass("NSArray"). It will be th 1st argument.
ObjCInterfaceDecl *Class =
expType->getPointeeType()->castAs<ObjCObjectType>()->getInterface();

IdentifierInfo *clsName = Class->getIdentifier();
ClsExprs.push_back(getStringLiteral(clsName->getName()));
CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
                                             StartLoc, EndLoc);
MsgExprs.push_back(Cls);

// Create a call to sel_registerName("arrayWithObjects:count:").
// it will be the 2nd argument.
SmallVector<Expr*, 4> SelExprs;
ObjCMethodDecl *DictMethod = Exp->getDictWithObjectsMethod();
SelExprs.push_back(getStringLiteral(DictMethod->getSelector().getAsString()));
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
                                                SelExprs, StartLoc, EndLoc);
MsgExprs.push_back(SelExp);

// (const id [])objects
MsgExprs.push_back(DictValueObjects);

// (const id <NSCopying> [])keys
MsgExprs.push_back(DictKeyObjects);

// (NSUInteger)cnt
Expr *cnt = IntegerLiteral::Create(*Context,
                                   llvm::APInt(UnsignedIntSize, NumElements),
                                   Context->UnsignedIntTy, SourceLocation());
MsgExprs.push_back(cnt);

SmallVector<QualType, 8> ArgTypes;
ArgTypes.push_back(Context->getObjCClassType());
ArgTypes.push_back(Context->getObjCSelType());
for (const auto *PI : DictMethod->parameters()) {
  QualType T = PI->getType();
  if (const PointerType* PT = T->getAs<PointerType>()) {
    QualType PointeeTy = PT->getPointeeType();
    convertToUnqualifiedObjCType(PointeeTy);
    T = Context->getPointerType(PointeeTy);
  }
  ArgTypes.push_back(T);
}

QualType returnType = Exp->getType();
// Get the type, we will need to reference it in a couple spots.
QualType msgSendType = MsgSendFlavor->getType();

// Create a reference to the objc_msgSend() declaration.
DeclRefExpr *DRE = new (Context) DeclRefExpr(
    *Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());

CastExpr *cast = NoTypeInfoCStyleCastExpr(
    Context, Context->getPointerType(Context->VoidTy), CK_BitCast, DRE);

// Now do the "normal" pointer to function cast.
QualType castType =
getSimpleFunctionType(returnType, ArgTypes, DictMethod->isVariadic());
castType = Context->getPointerType(castType);
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
                                cast);

// Don't forget the parens to enforce the proper binding.
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);

const FunctionType *FT = msgSendType->castAs<FunctionType>();
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
                                VK_RValue, EndLoc);
ReplaceStmt(Exp, CE);
return CE;
2968}

2970// struct __rw_objc_super {
2971//   struct objc_object *object; struct objc_object *superClass;
2972// };
2973QualType RewriteModernObjC::getSuperStructType() {
if (!SuperStructDecl) {
  SuperStructDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
                                       SourceLocation(), SourceLocation(),
                                       &Context->Idents.get("__rw_objc_super"));
  QualType FieldTypes[2];

  // struct objc_object *object;
  FieldTypes[0] = Context->getObjCIdType();
  // struct objc_object *superClass;
  FieldTypes[1] = Context->getObjCIdType();

  // Create fields
  for (unsigned i = 0; i < 2; ++i) {
    SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl,
                                               SourceLocation(),
                                               SourceLocation(), nullptr,
                                               FieldTypes[i], nullptr,
                                               /*BitWidth=*/nullptr,
                                               /*Mutable=*/false,
                                               ICIS_NoInit));
  }

  SuperStructDecl->completeDefinition();
}
return Context->getTagDeclType(SuperStructDecl);
2999}

3001QualType RewriteModernObjC::getConstantStringStructType() {
if (!ConstantStringDecl) {
  ConstantStringDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
                                          SourceLocation(), SourceLocation(),
                       &Context->Idents.get("__NSConstantStringImpl"));
  QualType FieldTypes[4];

  // struct objc_object *receiver;
  FieldTypes[0] = Context->getObjCIdType();
  // int flags;
  FieldTypes[1] = Context->IntTy;
  // char *str;
  FieldTypes[2] = Context->getPointerType(Context->CharTy);
  // long length;
  FieldTypes[3] = Context->LongTy;

  // Create fields
  for (unsigned i = 0; i < 4; ++i) {
    ConstantStringDecl->addDecl(FieldDecl::Create(*Context,
                                                  ConstantStringDecl,
                                                  SourceLocation(),
                                                  SourceLocation(), nullptr,
                                                  FieldTypes[i], nullptr,
                                                  /*BitWidth=*/nullptr,
                                                  /*Mutable=*/true,
                                                  ICIS_NoInit));
  }

  ConstantStringDecl->completeDefinition();
}
return Context->getTagDeclType(ConstantStringDecl);
3032}

3034/// getFunctionSourceLocation - returns start location of a function
3035/// definition. Complication arises when function has declared as
3036/// extern "C" or extern "C" {...}
3037static SourceLocation getFunctionSourceLocation (RewriteModernObjC &R,
                                               FunctionDecl *FD) {
if (FD->isExternC()  && !FD->isMain()) {
  const DeclContext *DC = FD->getDeclContext();
  if (const LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(DC))
    // if it is extern "C" {...}, return function decl's own location.
    if (!LSD->getRBraceLoc().isValid())
      return LSD->getExternLoc();
}
if (FD->getStorageClass() != SC_None)
  R.RewriteBlockLiteralFunctionDecl(FD);
return FD->getTypeSpecStartLoc();
3049}

3051void RewriteModernObjC::RewriteLineDirective(const Decl *D) {

SourceLocation Location = D->getLocation();

if (Location.isFileID() && GenerateLineInfo) {
  std::string LineString("\n#line ");
  PresumedLoc PLoc = SM->getPresumedLoc(Location);
  LineString += utostr(PLoc.getLine());
  LineString += " \"";
  LineString += Lexer::Stringify(PLoc.getFilename());
  if (isa<ObjCMethodDecl>(D))
    LineString += "\"";
  else LineString += "\"\n";

  Location = D->getBeginLoc();
  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
    if (FD->isExternC()  && !FD->isMain()) {
      const DeclContext *DC = FD->getDeclContext();
      if (const LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(DC))
        // if it is extern "C" {...}, return function decl's own location.
        if (!LSD->getRBraceLoc().isValid())
          Location = LSD->getExternLoc();
    }
  }
  InsertText(Location, LineString);
}
3077}

3079/// SynthMsgSendStretCallExpr - This routine translates message expression
3080/// into a call to objc_msgSend_stret() entry point. Tricky part is that
3081/// nil check on receiver must be performed before calling objc_msgSend_stret.
3082/// MsgSendStretFlavor - function declaration objc_msgSend_stret(...)
3083/// msgSendType - function type of objc_msgSend_stret(...)
3084/// returnType - Result type of the method being synthesized.
3085/// ArgTypes - type of the arguments passed to objc_msgSend_stret, starting with receiver type.
3086/// MsgExprs - list of argument expressions being passed to objc_msgSend_stret,
3087/// starting with receiver.
3088/// Method - Method being rewritten.
3089Expr *RewriteModernObjC::SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
                                               QualType returnType,
                                               SmallVectorImpl<QualType> &ArgTypes,
                                               SmallVectorImpl<Expr*> &MsgExprs,
                                               ObjCMethodDecl *Method) {
// Now do the "normal" pointer to function cast.
QualType FuncType = getSimpleFunctionType(
    returnType, ArgTypes, Method ? Method->isVariadic() : false);
QualType castType = Context->getPointerType(FuncType);

// build type for containing the objc_msgSend_stret object.
static unsigned stretCount=0;
std::string name = "__Stret"; name += utostr(stretCount);
std::string str =
  "extern \"C\" void * __cdecl memset(void *_Dst, int _Val, size_t _Size);\n";
str += "namespace {\n";
str += "struct "; str += name;
str += " {\n\t";
str += name;
str += "(id receiver, SEL sel";
for (unsigned i = 2; i < ArgTypes.size(); i++) {
  std::string ArgName = "arg"; ArgName += utostr(i);
  ArgTypes[i].getAsStringInternal(ArgName, Context->getPrintingPolicy());
  str += ", "; str += ArgName;
}
// could be vararg.
for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
  std::string ArgName = "arg"; ArgName += utostr(i);
  MsgExprs[i]->getType().getAsStringInternal(ArgName,
                                             Context->getPrintingPolicy());
  str += ", "; str += ArgName;
}

str += ") {\n";
str += "\t  unsigned size = sizeof(";
str += returnType.getAsString(Context->getPrintingPolicy()); str += ");\n";

str += "\t  if (size == 1 || size == 2 || size == 4 || size == 8)\n";

str += "\t    s = (("; str += castType.getAsString(Context->getPrintingPolicy());
str += ")(void *)objc_msgSend)(receiver, sel";
for (unsigned i = 2; i < ArgTypes.size(); i++) {
  str += ", arg"; str += utostr(i);
}
// could be vararg.
for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
  str += ", arg"; str += utostr(i);
}
str+= ");\n";

str += "\t  else if (receiver == 0)\n";
str += "\t    memset((void*)&s, 0, sizeof(s));\n";
str += "\t  else\n";

str += "\t    s = (("; str += castType.getAsString(Context->getPrintingPolicy());
str += ")(void *)objc_msgSend_stret)(receiver, sel";
for (unsigned i = 2; i < ArgTypes.size(); i++) {
  str += ", arg"; str += utostr(i);
}
// could be vararg.
for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
  str += ", arg"; str += utostr(i);
}
str += ");\n";

str += "\t}\n";
str += "\t"; str += returnType.getAsString(Context->getPrintingPolicy());
str += " s;\n";
str += "};\n};\n\n";
SourceLocation FunLocStart;
if (CurFunctionDef)
  FunLocStart = getFunctionSourceLocation(*this, CurFunctionDef);
else {
  assert(CurMethodDef && "SynthMsgSendStretCallExpr - CurMethodDef is null")((CurMethodDef && "SynthMsgSendStretCallExpr - CurMethodDef is null"
) ? static_cast<void> (0) : __assert_fail ("CurMethodDef && \"SynthMsgSendStretCallExpr - CurMethodDef is null\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3162, __PRETTY_FUNCTION__));
  FunLocStart = CurMethodDef->getBeginLoc();
}

InsertText(FunLocStart, str);
++stretCount;

// AST for __Stretn(receiver, args).s;
IdentifierInfo *ID = &Context->Idents.get(name);
FunctionDecl *FD =
    FunctionDecl::Create(*Context, TUDecl, SourceLocation(), SourceLocation(),
                         ID, FuncType, nullptr, SC_Extern, false, false);
DeclRefExpr *DRE = new (Context)
    DeclRefExpr(*Context, FD, false, castType, VK_RValue, SourceLocation());
CallExpr *STCE = CallExpr::Create(*Context, DRE, MsgExprs, castType,
                                  VK_LValue, SourceLocation());

FieldDecl *FieldD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                  SourceLocation(),
                                  &Context->Idents.get("s"),
                                  returnType, nullptr,
                                  /*BitWidth=*/nullptr,
                                  /*Mutable=*/true, ICIS_NoInit);
MemberExpr *ME = MemberExpr::CreateImplicit(
    *Context, STCE, false, FieldD, FieldD->getType(), VK_LValue, OK_Ordinary);

return ME;
3189}

3191Stmt *RewriteModernObjC::SynthMessageExpr(ObjCMessageExpr *Exp,
                                  SourceLocation StartLoc,
                                  SourceLocation EndLoc) {
if (!SelGetUidFunctionDecl)
  SynthSelGetUidFunctionDecl();
if (!MsgSendFunctionDecl)
  SynthMsgSendFunctionDecl();
if (!MsgSendSuperFunctionDecl)
  SynthMsgSendSuperFunctionDecl();
if (!MsgSendStretFunctionDecl)
  SynthMsgSendStretFunctionDecl();
if (!MsgSendSuperStretFunctionDecl)
  SynthMsgSendSuperStretFunctionDecl();
if (!MsgSendFpretFunctionDecl)
  SynthMsgSendFpretFunctionDecl();
if (!GetClassFunctionDecl)
  SynthGetClassFunctionDecl();
if (!GetSuperClassFunctionDecl)
  SynthGetSuperClassFunctionDecl();
if (!GetMetaClassFunctionDecl)
  SynthGetMetaClassFunctionDecl();

// default to objc_msgSend().
FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
// May need to use objc_msgSend_stret() as well.
FunctionDecl *MsgSendStretFlavor = nullptr;
if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) {
  QualType resultType = mDecl->getReturnType();
  if (resultType->isRecordType())
    MsgSendStretFlavor = MsgSendStretFunctionDecl;
  else if (resultType->isRealFloatingType())
    MsgSendFlavor = MsgSendFpretFunctionDecl;
}

// Synthesize a call to objc_msgSend().
SmallVector<Expr*, 8> MsgExprs;
switch (Exp->getReceiverKind()) {
case ObjCMessageExpr::SuperClass: {
  MsgSendFlavor = MsgSendSuperFunctionDecl;
  if (MsgSendStretFlavor)
    MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
  assert(MsgSendFlavor && "MsgSendFlavor is NULL!")((MsgSendFlavor && "MsgSendFlavor is NULL!") ? static_cast
<void> (0) : __assert_fail ("MsgSendFlavor && \"MsgSendFlavor is NULL!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3232, __PRETTY_FUNCTION__));

  ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();

  SmallVector<Expr*, 4> InitExprs;

  // set the receiver to self, the first argument to all methods.
  InitExprs.push_back(
    NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
                             CK_BitCast,
                 new (Context) DeclRefExpr(*Context,
                                           CurMethodDef->getSelfDecl(),
                                           false,
                                           Context->getObjCIdType(),
                                           VK_RValue,
                                           SourceLocation()))
                      ); // set the 'receiver'.

  // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
  SmallVector<Expr*, 8> ClsExprs;
  ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
  // (Class)objc_getClass("CurrentClass")
  CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl,
                                               ClsExprs, StartLoc, EndLoc);
  ClsExprs.clear();
  ClsExprs.push_back(Cls);
  Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl, ClsExprs,
                                     StartLoc, EndLoc);

  // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
  // To turn off a warning, type-cast to 'id'
  InitExprs.push_back( // set 'super class', using class_getSuperclass().
                      NoTypeInfoCStyleCastExpr(Context,
                                               Context->getObjCIdType(),
                                               CK_BitCast, Cls));
  // struct __rw_objc_super
  QualType superType = getSuperStructType();
  Expr *SuperRep;

  if (LangOpts.MicrosoftExt) {
    SynthSuperConstructorFunctionDecl();
    // Simulate a constructor call...
    DeclRefExpr *DRE = new (Context)
        DeclRefExpr(*Context, SuperConstructorFunctionDecl, false, superType,
                    VK_LValue, SourceLocation());
    SuperRep = CallExpr::Create(*Context, DRE, InitExprs, superType,
                                VK_LValue, SourceLocation());
    // The code for super is a little tricky to prevent collision with
    // the structure definition in the header. The rewriter has it's own
    // internal definition (__rw_objc_super) that is uses. This is why
    // we need the cast below. For example:
    // (struct __rw_objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
    //
    SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
                             Context->getPointerType(SuperRep->getType()),
                                           VK_RValue, OK_Ordinary,
                                           SourceLocation(), false);
    SuperRep = NoTypeInfoCStyleCastExpr(Context,
                                        Context->getPointerType(superType),
                                        CK_BitCast, SuperRep);
  } else {
    // (struct __rw_objc_super) { <exprs from above> }
    InitListExpr *ILE =
      new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
                                 SourceLocation());
    TypeSourceInfo *superTInfo
      = Context->getTrivialTypeSourceInfo(superType);
    SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
                                                 superType, VK_LValue,
                                                 ILE, false);
    // struct __rw_objc_super *
    SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
                             Context->getPointerType(SuperRep->getType()),
                                           VK_RValue, OK_Ordinary,
                                           SourceLocation(), false);
  }
  MsgExprs.push_back(SuperRep);
  break;
}

case ObjCMessageExpr::Class: {
  SmallVector<Expr*, 8> ClsExprs;
  ObjCInterfaceDecl *Class
    = Exp->getClassReceiver()->castAs<ObjCObjectType>()->getInterface();
  IdentifierInfo *clsName = Class->getIdentifier();
  ClsExprs.push_back(getStringLiteral(clsName->getName()));
  CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
                                               StartLoc, EndLoc);
  CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context,
                                               Context->getObjCIdType(),
                                               CK_BitCast, Cls);
  MsgExprs.push_back(ArgExpr);
  break;
}

case ObjCMessageExpr::SuperInstance:{
  MsgSendFlavor = MsgSendSuperFunctionDecl;
  if (MsgSendStretFlavor)
    MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
  assert(MsgSendFlavor && "MsgSendFlavor is NULL!")((MsgSendFlavor && "MsgSendFlavor is NULL!") ? static_cast
<void> (0) : __assert_fail ("MsgSendFlavor && \"MsgSendFlavor is NULL!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3331, __PRETTY_FUNCTION__));
  ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
  SmallVector<Expr*, 4> InitExprs;

  InitExprs.push_back(
    NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
                             CK_BitCast,
                 new (Context) DeclRefExpr(*Context,
                                           CurMethodDef->getSelfDecl(),
                                           false,
                                           Context->getObjCIdType(),
                                           VK_RValue, SourceLocation()))
                      ); // set the 'receiver'.

  // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
  SmallVector<Expr*, 8> ClsExprs;
  ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
  // (Class)objc_getClass("CurrentClass")
  CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl, ClsExprs,
                                               StartLoc, EndLoc);
  ClsExprs.clear();
  ClsExprs.push_back(Cls);
  Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl, ClsExprs,
                                     StartLoc, EndLoc);

  // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
  // To turn off a warning, type-cast to 'id'
  InitExprs.push_back(
    // set 'super class', using class_getSuperclass().
    NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
                             CK_BitCast, Cls));
  // struct __rw_objc_super
  QualType superType = getSuperStructType();
  Expr *SuperRep;

  if (LangOpts.MicrosoftExt) {
    SynthSuperConstructorFunctionDecl();
    // Simulate a constructor call...
    DeclRefExpr *DRE = new (Context)
        DeclRefExpr(*Context, SuperConstructorFunctionDecl, false, superType,
                    VK_LValue, SourceLocation());
    SuperRep = CallExpr::Create(*Context, DRE, InitExprs, superType,
                                VK_LValue, SourceLocation());
    // The code for super is a little tricky to prevent collision with
    // the structure definition in the header. The rewriter has it's own
    // internal definition (__rw_objc_super) that is uses. This is why
    // we need the cast below. For example:
    // (struct __rw_objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
    //
    SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
                             Context->getPointerType(SuperRep->getType()),
                             VK_RValue, OK_Ordinary,
                             SourceLocation(), false);
    SuperRep = NoTypeInfoCStyleCastExpr(Context,
                             Context->getPointerType(superType),
                             CK_BitCast, SuperRep);
  } else {
    // (struct __rw_objc_super) { <exprs from above> }
    InitListExpr *ILE =
      new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
                                 SourceLocation());
    TypeSourceInfo *superTInfo
      = Context->getTrivialTypeSourceInfo(superType);
    SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
                                                 superType, VK_RValue, ILE,
                                                 false);
  }
  MsgExprs.push_back(SuperRep);
  break;
}

case ObjCMessageExpr::Instance: {
  // Remove all type-casts because it may contain objc-style types; e.g.
  // Foo<Proto> *.
  Expr *recExpr = Exp->getInstanceReceiver();
  while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr))
    recExpr = CE->getSubExpr();
  CastKind CK = recExpr->getType()->isObjCObjectPointerType()
                  ? CK_BitCast : recExpr->getType()->isBlockPointerType()
                                   ? CK_BlockPointerToObjCPointerCast
                                   : CK_CPointerToObjCPointerCast;

  recExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
                                     CK, recExpr);
  MsgExprs.push_back(recExpr);
  break;
}
}

// Create a call to sel_registerName("selName"), it will be the 2nd argument.
SmallVector<Expr*, 8> SelExprs;
SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
                                                SelExprs, StartLoc, EndLoc);
MsgExprs.push_back(SelExp);

// Now push any user supplied arguments.
for (unsigned i = 0; i < Exp->getNumArgs(); i++) {
  Expr *userExpr = Exp->getArg(i);
  // Make all implicit casts explicit...ICE comes in handy:-)
  if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
    // Reuse the ICE type, it is exactly what the doctor ordered.
    QualType type = ICE->getType();
    if (needToScanForQualifiers(type))
      type = Context->getObjCIdType();
    // Make sure we convert "type (^)(...)" to "type (*)(...)".
    (void)convertBlockPointerToFunctionPointer(type);
    const Expr *SubExpr = ICE->IgnoreParenImpCasts();
    CastKind CK;
    if (SubExpr->getType()->isIntegralType(*Context) &&
        type->isBooleanType()) {
      CK = CK_IntegralToBoolean;
    } else if (type->isObjCObjectPointerType()) {
      if (SubExpr->getType()->isBlockPointerType()) {
        CK = CK_BlockPointerToObjCPointerCast;
      } else if (SubExpr->getType()->isPointerType()) {
        CK = CK_CPointerToObjCPointerCast;
      } else {
        CK = CK_BitCast;
      }
    } else {
      CK = CK_BitCast;
    }

    userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, userExpr);
  }
  // Make id<P...> cast into an 'id' cast.
  else if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(userExpr)) {
    if (CE->getType()->isObjCQualifiedIdType()) {
      while ((CE = dyn_cast<CStyleCastExpr>(userExpr)))
        userExpr = CE->getSubExpr();
      CastKind CK;
      if (userExpr->getType()->isIntegralType(*Context)) {
        CK = CK_IntegralToPointer;
      } else if (userExpr->getType()->isBlockPointerType()) {
        CK = CK_BlockPointerToObjCPointerCast;
      } else if (userExpr->getType()->isPointerType()) {
        CK = CK_CPointerToObjCPointerCast;
      } else {
        CK = CK_BitCast;
      }
      userExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
                                          CK, userExpr);
    }
  }
  MsgExprs.push_back(userExpr);
  // We've transferred the ownership to MsgExprs. For now, we *don't* null
  // out the argument in the original expression (since we aren't deleting
  // the ObjCMessageExpr). See RewritePropertyOrImplicitSetter() usage for more info.
  //Exp->setArg(i, 0);
}
// Generate the funky cast.
CastExpr *cast;
SmallVector<QualType, 8> ArgTypes;
QualType returnType;

// Push 'id' and 'SEL', the 2 implicit arguments.
if (MsgSendFlavor == MsgSendSuperFunctionDecl)
  ArgTypes.push_back(Context->getPointerType(getSuperStructType()));
else
  ArgTypes.push_back(Context->getObjCIdType());
ArgTypes.push_back(Context->getObjCSelType());
if (ObjCMethodDecl *OMD = Exp->getMethodDecl()) {
  // Push any user argument types.
  for (const auto *PI : OMD->parameters()) {
    QualType t = PI->getType()->isObjCQualifiedIdType()
                   ? Context->getObjCIdType()
                   : PI->getType();
    // Make sure we convert "t (^)(...)" to "t (*)(...)".
    (void)convertBlockPointerToFunctionPointer(t);
    ArgTypes.push_back(t);
  }
  returnType = Exp->getType();
  convertToUnqualifiedObjCType(returnType);
  (void)convertBlockPointerToFunctionPointer(returnType);
} else {
  returnType = Context->getObjCIdType();
}
// Get the type, we will need to reference it in a couple spots.
QualType msgSendType = MsgSendFlavor->getType();

// Create a reference to the objc_msgSend() declaration.
DeclRefExpr *DRE = new (Context) DeclRefExpr(
    *Context, MsgSendFlavor, false, msgSendType, VK_LValue, SourceLocation());

// Need to cast objc_msgSend to "void *" (to workaround a GCC bandaid).
// If we don't do this cast, we get the following bizarre warning/note:
// xx.m:13: warning: function called through a non-compatible type
// xx.m:13: note: if this code is reached, the program will abort
cast = NoTypeInfoCStyleCastExpr(Context,
                                Context->getPointerType(Context->VoidTy),
                                CK_BitCast, DRE);

// Now do the "normal" pointer to function cast.
// If we don't have a method decl, force a variadic cast.
const ObjCMethodDecl *MD = Exp->getMethodDecl();
QualType castType =
  getSimpleFunctionType(returnType, ArgTypes, MD ? MD->isVariadic() : true);
castType = Context->getPointerType(castType);
cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
                                cast);

// Don't forget the parens to enforce the proper binding.
ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);

const FunctionType *FT = msgSendType->castAs<FunctionType>();
CallExpr *CE = CallExpr::Create(*Context, PE, MsgExprs, FT->getReturnType(),
                                VK_RValue, EndLoc);
Stmt *ReplacingStmt = CE;
if (MsgSendStretFlavor) {
  // We have the method which returns a struct/union. Must also generate
  // call to objc_msgSend_stret and hang both varieties on a conditional
  // expression which dictate which one to envoke depending on size of
  // method's return type.

  Expr *STCE = SynthMsgSendStretCallExpr(MsgSendStretFlavor,
                                         returnType,
                                         ArgTypes, MsgExprs,
                                         Exp->getMethodDecl());
  ReplacingStmt = STCE;
}
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
return ReplacingStmt;
3554}

3556Stmt *RewriteModernObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) {
Stmt *ReplacingStmt =
    SynthMessageExpr(Exp, Exp->getBeginLoc(), Exp->getEndLoc());

// Now do the actual rewrite.
ReplaceStmt(Exp, ReplacingStmt);

// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
return ReplacingStmt;
3565}

3567// typedef struct objc_object Protocol;
3568QualType RewriteModernObjC::getProtocolType() {
if (!ProtocolTypeDecl) {
  TypeSourceInfo *TInfo
    = Context->getTrivialTypeSourceInfo(Context->getObjCIdType());
  ProtocolTypeDecl = TypedefDecl::Create(*Context, TUDecl,
                                         SourceLocation(), SourceLocation(),
                                         &Context->Idents.get("Protocol"),
                                         TInfo);
}
return Context->getTypeDeclType(ProtocolTypeDecl);
3578}

3580/// RewriteObjCProtocolExpr - Rewrite a protocol expression into
3581/// a synthesized/forward data reference (to the protocol's metadata).
3582/// The forward references (and metadata) are generated in
3583/// RewriteModernObjC::HandleTranslationUnit().
3584Stmt *RewriteModernObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) {
std::string Name = "_OBJC_PROTOCOL_REFERENCE_$_" +
                    Exp->getProtocol()->getNameAsString();
IdentifierInfo *ID = &Context->Idents.get(Name);
VarDecl *VD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
                              SourceLocation(), ID, getProtocolType(),
                              nullptr, SC_Extern);
DeclRefExpr *DRE = new (Context) DeclRefExpr(
    *Context, VD, false, getProtocolType(), VK_LValue, SourceLocation());
CastExpr *castExpr = NoTypeInfoCStyleCastExpr(
    Context, Context->getPointerType(DRE->getType()), CK_BitCast, DRE);
ReplaceStmt(Exp, castExpr);
ProtocolExprDecls.insert(Exp->getProtocol()->getCanonicalDecl());
// delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
return castExpr;
3599}

3601/// IsTagDefinedInsideClass - This routine checks that a named tagged type
3602/// is defined inside an objective-c class. If so, it returns true.
3603bool RewriteModernObjC::IsTagDefinedInsideClass(ObjCContainerDecl *IDecl,
                                              TagDecl *Tag,
                                              bool &IsNamedDefinition) {
if (!IDecl)
  return false;
SourceLocation TagLocation;
if (RecordDecl *RD = dyn_cast<RecordDecl>(Tag)) {
  RD = RD->getDefinition();
  if (!RD || !RD->getDeclName().getAsIdentifierInfo())
    return false;
  IsNamedDefinition = true;
  TagLocation = RD->getLocation();
  return Context->getSourceManager().isBeforeInTranslationUnit(
                                        IDecl->getLocation(), TagLocation);
}
if (EnumDecl *ED = dyn_cast<EnumDecl>(Tag)) {
  if (!ED || !ED->getDeclName().getAsIdentifierInfo())
    return false;
  IsNamedDefinition = true;
  TagLocation = ED->getLocation();
  return Context->getSourceManager().isBeforeInTranslationUnit(
                                        IDecl->getLocation(), TagLocation);
}
return false;
3627}

3629/// RewriteObjCFieldDeclType - This routine rewrites a type into the buffer.
3630/// It handles elaborated types, as well as enum types in the process.
3631bool RewriteModernObjC::RewriteObjCFieldDeclType(QualType &Type,
                                               std::string &Result) {
if (isa<TypedefType>(Type)) {
  Result += "\t";
  return false;
}

if (Type->isArrayType()) {
  QualType ElemTy = Context->getBaseElementType(Type);
  return RewriteObjCFieldDeclType(ElemTy, Result);
}
else if (Type->isRecordType()) {
  RecordDecl *RD = Type->castAs<RecordType>()->getDecl();
  if (RD->isCompleteDefinition()) {
    if (RD->isStruct())
      Result += "\n\tstruct ";
    else if (RD->isUnion())
      Result += "\n\tunion ";
    else
      assert(false && "class not allowed as an ivar type")((false && "class not allowed as an ivar type") ? static_cast
<void> (0) : __assert_fail ("false && \"class not allowed as an ivar type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3650, __PRETTY_FUNCTION__));

    Result += RD->getName();
    if (GlobalDefinedTags.count(RD)) {
      // struct/union is defined globally, use it.
      Result += " ";
      return true;
    }
    Result += " {\n";
    for (auto *FD : RD->fields())
      RewriteObjCFieldDecl(FD, Result);
    Result += "\t} ";
    return true;
  }
}
else if (Type->isEnumeralType()) {
  EnumDecl *ED = Type->castAs<EnumType>()->getDecl();
  if (ED->isCompleteDefinition()) {
    Result += "\n\tenum ";
    Result += ED->getName();
    if (GlobalDefinedTags.count(ED)) {
      // Enum is globall defined, use it.
      Result += " ";
      return true;
    }

    Result += " {\n";
    for (const auto *EC : ED->enumerators()) {
      Result += "\t"; Result += EC->getName(); Result += " = ";
      llvm::APSInt Val = EC->getInitVal();
      Result += Val.toString(10);
      Result += ",\n";
    }
    Result += "\t} ";
    return true;
  }
}

Result += "\t";
convertObjCTypeToCStyleType(Type);
return false;
3691}


3694/// RewriteObjCFieldDecl - This routine rewrites a field into the buffer.
3695/// It handles elaborated types, as well as enum types in the process.
3696void RewriteModernObjC::RewriteObjCFieldDecl(FieldDecl *fieldDecl,
                                           std::string &Result) {
QualType Type = fieldDecl->getType();
std::string Name = fieldDecl->getNameAsString();

bool EleboratedType = RewriteObjCFieldDeclType(Type, Result);
if (!EleboratedType)
  Type.getAsStringInternal(Name, Context->getPrintingPolicy());
Result += Name;
if (fieldDecl->isBitField()) {
  Result += " : "; Result += utostr(fieldDecl->getBitWidthValue(*Context));
}
else if (EleboratedType && Type->isArrayType()) {
  const ArrayType *AT = Context->getAsArrayType(Type);
  do {
    if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT)) {
      Result += "[";
      llvm::APInt Dim = CAT->getSize();
      Result += utostr(Dim.getZExtValue());
      Result += "]";
    }
    AT = Context->getAsArrayType(AT->getElementType());
  } while (AT);
}

Result += ";\n";
3722}

3724/// RewriteLocallyDefinedNamedAggregates - This routine rewrites locally defined
3725/// named aggregate types into the input buffer.
3726void RewriteModernObjC::RewriteLocallyDefinedNamedAggregates(FieldDecl *fieldDecl,
                                           std::string &Result) {
QualType Type = fieldDecl->getType();
if (isa<TypedefType>(Type))
  return;
if (Type->isArrayType())
  Type = Context->getBaseElementType(Type);

auto *IDecl = dyn_cast<ObjCContainerDecl>(fieldDecl->getDeclContext());

TagDecl *TD = nullptr;
if (Type->isRecordType()) {
  TD = Type->castAs<RecordType>()->getDecl();
}
else if (Type->isEnumeralType()) {
  TD = Type->castAs<EnumType>()->getDecl();
}

if (TD) {
  if (GlobalDefinedTags.count(TD))
    return;

  bool IsNamedDefinition = false;
  if (IsTagDefinedInsideClass(IDecl, TD, IsNamedDefinition)) {
    RewriteObjCFieldDeclType(Type, Result);
    Result += ";";
  }
  if (IsNamedDefinition)
    GlobalDefinedTags.insert(TD);
}
3756}

3758unsigned RewriteModernObjC::ObjCIvarBitfieldGroupNo(ObjCIvarDecl *IV) {
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
if (ObjCInterefaceHasBitfieldGroups.count(CDecl)) {
  return IvarGroupNumber[IV];
}
unsigned GroupNo = 0;
SmallVector<const ObjCIvarDecl *, 8> IVars;
for (const ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
     IVD; IVD = IVD->getNextIvar())
  IVars.push_back(IVD);

for (unsigned i = 0, e = IVars.size(); i < e; i++)
  if (IVars[i]->isBitField()) {
    IvarGroupNumber[IVars[i++]] = ++GroupNo;
    while (i < e && IVars[i]->isBitField())
      IvarGroupNumber[IVars[i++]] = GroupNo;
    if (i < e)
      --i;
  }

ObjCInterefaceHasBitfieldGroups.insert(CDecl);
return IvarGroupNumber[IV];
3780}

3782QualType RewriteModernObjC::SynthesizeBitfieldGroupStructType(
                            ObjCIvarDecl *IV,
                            SmallVectorImpl<ObjCIvarDecl *> &IVars) {
std::string StructTagName;
ObjCIvarBitfieldGroupType(IV, StructTagName);
RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct,
                                    Context->getTranslationUnitDecl(),
                                    SourceLocation(), SourceLocation(),
                                    &Context->Idents.get(StructTagName));
for (unsigned i=0, e = IVars.size(); i < e; i++) {
  ObjCIvarDecl *Ivar = IVars[i];
  RD->addDecl(FieldDecl::Create(*Context, RD, SourceLocation(), SourceLocation(),
                                &Context->Idents.get(Ivar->getName()),
                                Ivar->getType(),
                                nullptr, /*Expr *BW */Ivar->getBitWidth(),
                                false, ICIS_NoInit));
}
RD->completeDefinition();
return Context->getTagDeclType(RD);
3801}

3803QualType RewriteModernObjC::GetGroupRecordTypeForObjCIvarBitfield(ObjCIvarDecl *IV) {
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
std::pair<const ObjCInterfaceDecl*, unsigned> tuple = std::make_pair(CDecl, GroupNo);
if (GroupRecordType.count(tuple))
  return GroupRecordType[tuple];

SmallVector<ObjCIvarDecl *, 8> IVars;
for (const ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
     IVD; IVD = IVD->getNextIvar()) {
  if (IVD->isBitField())
    IVars.push_back(const_cast<ObjCIvarDecl *>(IVD));
  else {
    if (!IVars.empty()) {
      unsigned GroupNo = ObjCIvarBitfieldGroupNo(IVars[0]);
      // Generate the struct type for this group of bitfield ivars.
      GroupRecordType[std::make_pair(CDecl, GroupNo)] =
        SynthesizeBitfieldGroupStructType(IVars[0], IVars);
      IVars.clear();
    }
  }
}
if (!IVars.empty()) {
  // Do the last one.
  unsigned GroupNo = ObjCIvarBitfieldGroupNo(IVars[0]);
  GroupRecordType[std::make_pair(CDecl, GroupNo)] =
    SynthesizeBitfieldGroupStructType(IVars[0], IVars);
}
QualType RetQT = GroupRecordType[tuple];
assert(!RetQT.isNull() && "GetGroupRecordTypeForObjCIvarBitfield struct type is NULL")((!RetQT.isNull() && "GetGroupRecordTypeForObjCIvarBitfield struct type is NULL"
) ? static_cast<void> (0) : __assert_fail ("!RetQT.isNull() && \"GetGroupRecordTypeForObjCIvarBitfield struct type is NULL\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3832, __PRETTY_FUNCTION__));

return RetQT;
3835}

3837/// ObjCIvarBitfieldGroupDecl - Names field decl. for ivar bitfield group.
3838/// Name would be: classname__GRBF_n where n is the group number for this ivar.
3839void RewriteModernObjC::ObjCIvarBitfieldGroupDecl(ObjCIvarDecl *IV,
                                                std::string &Result) {
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
Result += CDecl->getName();
Result += "__GRBF_";
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
Result += utostr(GroupNo);
3846}

3848/// ObjCIvarBitfieldGroupType - Names struct type for ivar bitfield group.
3849/// Name of the struct would be: classname__T_n where n is the group number for
3850/// this ivar.
3851void RewriteModernObjC::ObjCIvarBitfieldGroupType(ObjCIvarDecl *IV,
                                                std::string &Result) {
const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
Result += CDecl->getName();
Result += "__T_";
unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
Result += utostr(GroupNo);
3858}

3860/// ObjCIvarBitfieldGroupOffset - Names symbol for ivar bitfield group field offset.
3861/// Name would be: OBJC_IVAR_$_classname__GRBF_n where n is the group number for
3862/// this ivar.
3863void RewriteModernObjC::ObjCIvarBitfieldGroupOffset(ObjCIvarDecl *IV,
                                                  std::string &Result) {
Result += "OBJC_IVAR_$_";
ObjCIvarBitfieldGroupDecl(IV, Result);
3867}

3869#define SKIP_BITFIELDS(IX, ENDIX, VEC){ while ((IX < ENDIX) && VEC[IX]->isBitField())
 ++IX; if (IX < ENDIX) --IX; } { \
    while ((IX < ENDIX) && VEC[IX]->isBitField()) \
      ++IX; \
    if (IX < ENDIX) \
      --IX; \
3874}

3876/// RewriteObjCInternalStruct - Rewrite one internal struct corresponding to
3877/// an objective-c class with ivars.
3878void RewriteModernObjC::RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
                                             std::string &Result) {
assert(CDecl && "Class missing in SynthesizeObjCInternalStruct")((CDecl && "Class missing in SynthesizeObjCInternalStruct"
) ? static_cast<void> (0) : __assert_fail ("CDecl && \"Class missing in SynthesizeObjCInternalStruct\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3880, __PRETTY_FUNCTION__));
assert(CDecl->getName() != "" &&((CDecl->getName() != "" && "Name missing in SynthesizeObjCInternalStruct"
) ? static_cast<void> (0) : __assert_fail ("CDecl->getName() != \"\" && \"Name missing in SynthesizeObjCInternalStruct\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3882, __PRETTY_FUNCTION__))
       "Name missing in SynthesizeObjCInternalStruct")((CDecl->getName() != "" && "Name missing in SynthesizeObjCInternalStruct"
) ? static_cast<void> (0) : __assert_fail ("CDecl->getName() != \"\" && \"Name missing in SynthesizeObjCInternalStruct\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3882, __PRETTY_FUNCTION__));
ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass();
SmallVector<ObjCIvarDecl *, 8> IVars;
for (ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
     IVD; IVD = IVD->getNextIvar())
  IVars.push_back(IVD);

SourceLocation LocStart = CDecl->getBeginLoc();
SourceLocation LocEnd = CDecl->getEndOfDefinitionLoc();

const char *startBuf = SM->getCharacterData(LocStart);
const char *endBuf = SM->getCharacterData(LocEnd);

// If no ivars and no root or if its root, directly or indirectly,
// have no ivars (thus not synthesized) then no need to synthesize this class.
if ((!CDecl->isThisDeclarationADefinition() || IVars.size() == 0) &&
    (!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) {
  endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
  ReplaceText(LocStart, endBuf-startBuf, Result);
  return;
}

// Insert named struct/union definitions inside class to
// outer scope. This follows semantics of locally defined
// struct/unions in objective-c classes.
for (unsigned i = 0, e = IVars.size(); i < e; i++)
  RewriteLocallyDefinedNamedAggregates(IVars[i], Result);

// Insert named structs which are syntheized to group ivar bitfields
// to outer scope as well.
for (unsigned i = 0, e = IVars.size(); i < e; i++)
  if (IVars[i]->isBitField()) {
    ObjCIvarDecl *IV = IVars[i];
    QualType QT = GetGroupRecordTypeForObjCIvarBitfield(IV);
    RewriteObjCFieldDeclType(QT, Result);
    Result += ";";
    // skip over ivar bitfields in this group.
    SKIP_BITFIELDS(i , e, IVars){ while ((i < e) && IVars[i]->isBitField()) ++i
; if (i < e) --i; };
  }

Result += "\nstruct ";
Result += CDecl->getNameAsString();
Result += "_IMPL {\n";

if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) {
  Result += "\tstruct "; Result += RCDecl->getNameAsString();
  Result += "_IMPL "; Result += RCDecl->getNameAsString();
  Result += "_IVARS;\n";
}

for (unsigned i = 0, e = IVars.size(); i < e; i++) {
  if (IVars[i]->isBitField()) {
    ObjCIvarDecl *IV = IVars[i];
    Result += "\tstruct ";
    ObjCIvarBitfieldGroupType(IV, Result); Result += " ";
    ObjCIvarBitfieldGroupDecl(IV, Result); Result += ";\n";
    // skip over ivar bitfields in this group.
    SKIP_BITFIELDS(i , e, IVars){ while ((i < e) && IVars[i]->isBitField()) ++i
; if (i < e) --i; };
  }
  else
    RewriteObjCFieldDecl(IVars[i], Result);
}

Result += "};\n";
endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
ReplaceText(LocStart, endBuf-startBuf, Result);
// Mark this struct as having been generated.
if (!ObjCSynthesizedStructs.insert(CDecl).second)
  llvm_unreachable("struct already synthesize- RewriteObjCInternalStruct")::llvm::llvm_unreachable_internal("struct already synthesize- RewriteObjCInternalStruct"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 3950);
3951}

3953/// RewriteIvarOffsetSymbols - Rewrite ivar offset symbols of those ivars which
3954/// have been referenced in an ivar access expression.
3955void RewriteModernObjC::RewriteIvarOffsetSymbols(ObjCInterfaceDecl *CDecl,
                                                std::string &Result) {
// write out ivar offset symbols which have been referenced in an ivar
// access expression.
llvm::SmallSetVector<ObjCIvarDecl *, 8> Ivars = ReferencedIvars[CDecl];

if (Ivars.empty())
  return;

llvm::DenseSet<std::pair<const ObjCInterfaceDecl*, unsigned> > GroupSymbolOutput;
for (ObjCIvarDecl *IvarDecl : Ivars) {
  const ObjCInterfaceDecl *IDecl = IvarDecl->getContainingInterface();
  unsigned GroupNo = 0;
  if (IvarDecl->isBitField()) {
    GroupNo = ObjCIvarBitfieldGroupNo(IvarDecl);
    if (GroupSymbolOutput.count(std::make_pair(IDecl, GroupNo)))
      continue;
  }
  Result += "\n";
  if (LangOpts.MicrosoftExt)
    Result += "__declspec(allocate(\".objc_ivar$B\")) ";
  Result += "extern \"C\" ";
  if (LangOpts.MicrosoftExt &&
      IvarDecl->getAccessControl() != ObjCIvarDecl::Private &&
      IvarDecl->getAccessControl() != ObjCIvarDecl::Package)
      Result += "__declspec(dllimport) ";

  Result += "unsigned long ";
  if (IvarDecl->isBitField()) {
    ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
    GroupSymbolOutput.insert(std::make_pair(IDecl, GroupNo));
  }
  else
    WriteInternalIvarName(CDecl, IvarDecl, Result);
  Result += ";";
}
3991}

3993//===----------------------------------------------------------------------===//
3994// Meta Data Emission
3995//===----------------------------------------------------------------------===//

3997/// RewriteImplementations - This routine rewrites all method implementations
3998/// and emits meta-data.

4000void RewriteModernObjC::RewriteImplementations() {
int ClsDefCount = ClassImplementation.size();
int CatDefCount = CategoryImplementation.size();

// Rewrite implemented methods
for (int i = 0; i < ClsDefCount; i++) {
  ObjCImplementationDecl *OIMP = ClassImplementation[i];
  ObjCInterfaceDecl *CDecl = OIMP->getClassInterface();
  if (CDecl->isImplicitInterfaceDecl())
    assert(false &&((false && "Legacy implicit interface rewriting not supported in moder abi"
) ? static_cast<void> (0) : __assert_fail ("false && \"Legacy implicit interface rewriting not supported in moder abi\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4010, __PRETTY_FUNCTION__))
           "Legacy implicit interface rewriting not supported in moder abi")((false && "Legacy implicit interface rewriting not supported in moder abi"
) ? static_cast<void> (0) : __assert_fail ("false && \"Legacy implicit interface rewriting not supported in moder abi\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4010, __PRETTY_FUNCTION__));
  RewriteImplementationDecl(OIMP);
}

for (int i = 0; i < CatDefCount; i++) {
  ObjCCategoryImplDecl *CIMP = CategoryImplementation[i];
  ObjCInterfaceDecl *CDecl = CIMP->getClassInterface();
  if (CDecl->isImplicitInterfaceDecl())
    assert(false &&((false && "Legacy implicit interface rewriting not supported in moder abi"
) ? static_cast<void> (0) : __assert_fail ("false && \"Legacy implicit interface rewriting not supported in moder abi\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4019, __PRETTY_FUNCTION__))
           "Legacy implicit interface rewriting not supported in moder abi")((false && "Legacy implicit interface rewriting not supported in moder abi"
) ? static_cast<void> (0) : __assert_fail ("false && \"Legacy implicit interface rewriting not supported in moder abi\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4019, __PRETTY_FUNCTION__));
  RewriteImplementationDecl(CIMP);
}
4022}

4024void RewriteModernObjC::RewriteByRefString(std::string &ResultStr,
                                   const std::string &Name,
                                   ValueDecl *VD, bool def) {
assert(BlockByRefDeclNo.count(VD) &&((BlockByRefDeclNo.count(VD) && "RewriteByRefString: ByRef decl missing"
) ? static_cast<void> (0) : __assert_fail ("BlockByRefDeclNo.count(VD) && \"RewriteByRefString: ByRef decl missing\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4028, __PRETTY_FUNCTION__))
       "RewriteByRefString: ByRef decl missing")((BlockByRefDeclNo.count(VD) && "RewriteByRefString: ByRef decl missing"
) ? static_cast<void> (0) : __assert_fail ("BlockByRefDeclNo.count(VD) && \"RewriteByRefString: ByRef decl missing\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4028, __PRETTY_FUNCTION__));
if (def)
  ResultStr += "struct ";
ResultStr += "__Block_byref_" + Name +
  "_" + utostr(BlockByRefDeclNo[VD]) ;
4033}

4035static bool HasLocalVariableExternalStorage(ValueDecl *VD) {
if (VarDecl *Var = dyn_cast<VarDecl>(VD))
  return (Var->isFunctionOrMethodVarDecl() && !Var->hasLocalStorage());
return false;
4039}

4041std::string RewriteModernObjC::SynthesizeBlockFunc(BlockExpr *CE, int i,
                                                 StringRef funcName,
                                                 std::string Tag) {
const FunctionType *AFT = CE->getFunctionType();
QualType RT = AFT->getReturnType();
std::string StructRef = "struct " + Tag;
SourceLocation BlockLoc = CE->getExprLoc();
std::string S;
ConvertSourceLocationToLineDirective(BlockLoc, S);

S += "static " + RT.getAsString(Context->getPrintingPolicy()) + " __" +
       funcName.str() + "_block_func_" + utostr(i);

BlockDecl *BD = CE->getBlockDecl();

if (isa<FunctionNoProtoType>(AFT)) {
  // No user-supplied arguments. Still need to pass in a pointer to the
  // block (to reference imported block decl refs).
  S += "(" + StructRef + " *__cself)";
} else if (BD->param_empty()) {
  S += "(" + StructRef + " *__cself)";
} else {
  const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
  assert(FT && "SynthesizeBlockFunc: No function proto")((FT && "SynthesizeBlockFunc: No function proto") ? static_cast
<void> (0) : __assert_fail ("FT && \"SynthesizeBlockFunc: No function proto\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4064, __PRETTY_FUNCTION__));
  S += '(';
  // first add the implicit argument.
  S += StructRef + " *__cself, ";
  std::string ParamStr;
  for (BlockDecl::param_iterator AI = BD->param_begin(),
       E = BD->param_end(); AI != E; ++AI) {
    if (AI != BD->param_begin()) S += ", ";
    ParamStr = (*AI)->getNameAsString();
    QualType QT = (*AI)->getType();
    (void)convertBlockPointerToFunctionPointer(QT);
    QT.getAsStringInternal(ParamStr, Context->getPrintingPolicy());
    S += ParamStr;
  }
  if (FT->isVariadic()) {
    if (!BD->param_empty()) S += ", ";
    S += "...";
  }
  S += ')';
}
S += " {\n";

// Create local declarations to avoid rewriting all closure decl ref exprs.
// First, emit a declaration for all "by ref" decls.
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
     E = BlockByRefDecls.end(); I != E; ++I) {
  S += "  ";
  std::string Name = (*I)->getNameAsString();
  std::string TypeString;
  RewriteByRefString(TypeString, Name, (*I));
  TypeString += " *";
  Name = TypeString + Name;
  S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n";
}
// Next, emit a declaration for all "by copy" declarations.
for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
     E = BlockByCopyDecls.end(); I != E; ++I) {
  S += "  ";
  // Handle nested closure invocation. For example:
  //
  //   void (^myImportedClosure)(void);
  //   myImportedClosure  = ^(void) { setGlobalInt(x + y); };
  //
  //   void (^anotherClosure)(void);
  //   anotherClosure = ^(void) {
  //     myImportedClosure(); // import and invoke the closure
  //   };
  //
  if (isTopLevelBlockPointerType((*I)->getType())) {
    RewriteBlockPointerTypeVariable(S, (*I));
    S += " = (";
    RewriteBlockPointerType(S, (*I)->getType());
    S += ")";
    S += "__cself->" + (*I)->getNameAsString() + "; // bound by copy\n";
  }
  else {
    std::string Name = (*I)->getNameAsString();
    QualType QT = (*I)->getType();
    if (HasLocalVariableExternalStorage(*I))
      QT = Context->getPointerType(QT);
    QT.getAsStringInternal(Name, Context->getPrintingPolicy());
    S += Name + " = __cself->" +
                            (*I)->getNameAsString() + "; // bound by copy\n";
  }
}
std::string RewrittenStr = RewrittenBlockExprs[CE];
const char *cstr = RewrittenStr.c_str();
while (*cstr++ != '{') ;
S += cstr;
S += "\n";
return S;
4135}

4137std::string RewriteModernObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
                                                 StringRef funcName,
                                                 std::string Tag) {
std::string StructRef = "struct " + Tag;
std::string S = "static void __";

S += funcName;
S += "_block_copy_" + utostr(i);
S += "(" + StructRef;
S += "*dst, " + StructRef;
S += "*src) {";
for (ValueDecl *VD : ImportedBlockDecls) {
  S += "_Block_object_assign((void*)&dst->";
  S += VD->getNameAsString();
  S += ", (void*)src->";
  S += VD->getNameAsString();
  if (BlockByRefDeclsPtrSet.count(VD))
    S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
  else if (VD->getType()->isBlockPointerType())
    S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
  else
    S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
}
S += "}\n";

S += "\nstatic void __";
S += funcName;
S += "_block_dispose_" + utostr(i);
S += "(" + StructRef;
S += "*src) {";
for (ValueDecl *VD : ImportedBlockDecls) {
  S += "_Block_object_dispose((void*)src->";
  S += VD->getNameAsString();
  if (BlockByRefDeclsPtrSet.count(VD))
    S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
  else if (VD->getType()->isBlockPointerType())
    S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
  else
    S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
}
S += "}\n";
return S;
4179}

4181std::string RewriteModernObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
                                           std::string Desc) {
std::string S = "\nstruct " + Tag;
std::string Constructor = "  " + Tag;

S += " {\n  struct __block_impl impl;\n";
S += "  struct " + Desc;
S += "* Desc;\n";

Constructor += "(void *fp, "; // Invoke function pointer.
Constructor += "struct " + Desc; // Descriptor pointer.
Constructor += " *desc";

if (BlockDeclRefs.size()) {
  // Output all "by copy" declarations.
  for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
       E = BlockByCopyDecls.end(); I != E; ++I) {
    S += "  ";
    std::string FieldName = (*I)->getNameAsString();
    std::string ArgName = "_" + FieldName;
    // Handle nested closure invocation. For example:
    //
    //   void (^myImportedBlock)(void);
    //   myImportedBlock  = ^(void) { setGlobalInt(x + y); };
    //
    //   void (^anotherBlock)(void);
    //   anotherBlock = ^(void) {
    //     myImportedBlock(); // import and invoke the closure
    //   };
    //
    if (isTopLevelBlockPointerType((*I)->getType())) {
      S += "struct __block_impl *";
      Constructor += ", void *" + ArgName;
    } else {
      QualType QT = (*I)->getType();
      if (HasLocalVariableExternalStorage(*I))
        QT = Context->getPointerType(QT);
      QT.getAsStringInternal(FieldName, Context->getPrintingPolicy());
      QT.getAsStringInternal(ArgName, Context->getPrintingPolicy());
      Constructor += ", " + ArgName;
    }
    S += FieldName + ";\n";
  }
  // Output all "by ref" declarations.
  for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
       E = BlockByRefDecls.end(); I != E; ++I) {
    S += "  ";
    std::string FieldName = (*I)->getNameAsString();
    std::string ArgName = "_" + FieldName;
    {
      std::string TypeString;
      RewriteByRefString(TypeString, FieldName, (*I));
      TypeString += " *";
      FieldName = TypeString + FieldName;
      ArgName = TypeString + ArgName;
      Constructor += ", " + ArgName;
    }
    S += FieldName + "; // by ref\n";
  }
  // Finish writing the constructor.
  Constructor += ", int flags=0)";
  // Initialize all "by copy" arguments.
  bool firsTime = true;
  for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
       E = BlockByCopyDecls.end(); I != E; ++I) {
    std::string Name = (*I)->getNameAsString();
      if (firsTime) {
        Constructor += " : ";
        firsTime = false;
      }
      else
        Constructor += ", ";
      if (isTopLevelBlockPointerType((*I)->getType()))
        Constructor += Name + "((struct __block_impl *)_" + Name + ")";
      else
        Constructor += Name + "(_" + Name + ")";
  }
  // Initialize all "by ref" arguments.
  for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
       E = BlockByRefDecls.end(); I != E; ++I) {
    std::string Name = (*I)->getNameAsString();
    if (firsTime) {
      Constructor += " : ";
      firsTime = false;
    }
    else
      Constructor += ", ";
    Constructor += Name + "(_" + Name + "->__forwarding)";
  }

  Constructor += " {\n";
  if (GlobalVarDecl)
    Constructor += "    impl.isa = &_NSConcreteGlobalBlock;\n";
  else
    Constructor += "    impl.isa = &_NSConcreteStackBlock;\n";
  Constructor += "    impl.Flags = flags;\n    impl.FuncPtr = fp;\n";

  Constructor += "    Desc = desc;\n";
} else {
  // Finish writing the constructor.
  Constructor += ", int flags=0) {\n";
  if (GlobalVarDecl)
    Constructor += "    impl.isa = &_NSConcreteGlobalBlock;\n";
  else
    Constructor += "    impl.isa = &_NSConcreteStackBlock;\n";
  Constructor += "    impl.Flags = flags;\n    impl.FuncPtr = fp;\n";
  Constructor += "    Desc = desc;\n";
}
Constructor += "  ";
Constructor += "}\n";
S += Constructor;
S += "};\n";
return S;
4294}

4296std::string RewriteModernObjC::SynthesizeBlockDescriptor(std::string DescTag,
                                                 std::string ImplTag, int i,
                                                 StringRef FunName,
                                                 unsigned hasCopy) {
std::string S = "\nstatic struct " + DescTag;

S += " {\n  size_t reserved;\n";
S += "  size_t Block_size;\n";
if (hasCopy) {
  S += "  void (*copy)(struct ";
  S += ImplTag; S += "*, struct ";
  S += ImplTag; S += "*);\n";

  S += "  void (*dispose)(struct ";
  S += ImplTag; S += "*);\n";
}
S += "} ";

S += DescTag + "_DATA = { 0, sizeof(struct ";
S += ImplTag + ")";
if (hasCopy) {
  S += ", __" + FunName.str() + "_block_copy_" + utostr(i);
  S += ", __" + FunName.str() + "_block_dispose_" + utostr(i);
}
S += "};\n";
return S;
4322}

4324void RewriteModernObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart,
                                        StringRef FunName) {
bool RewriteSC = (GlobalVarDecl &&
                  !Blocks.empty() &&
                  GlobalVarDecl->getStorageClass() == SC_Static &&
                  GlobalVarDecl->getType().getCVRQualifiers());
if (RewriteSC) {
  std::string SC(" void __");
  SC += GlobalVarDecl->getNameAsString();
  SC += "() {}";
  InsertText(FunLocStart, SC);
}

// Insert closures that were part of the function.
for (unsigned i = 0, count=0; i < Blocks.size(); i++) {
  CollectBlockDeclRefInfo(Blocks[i]);
  // Need to copy-in the inner copied-in variables not actually used in this
  // block.
  for (int j = 0; j < InnerDeclRefsCount[i]; j++) {
    DeclRefExpr *Exp = InnerDeclRefs[count++];
    ValueDecl *VD = Exp->getDecl();
    BlockDeclRefs.push_back(Exp);
    if (!VD->hasAttr<BlocksAttr>()) {
      if (!BlockByCopyDeclsPtrSet.count(VD)) {
        BlockByCopyDeclsPtrSet.insert(VD);
        BlockByCopyDecls.push_back(VD);
      }
      continue;
    }

    if (!BlockByRefDeclsPtrSet.count(VD)) {
      BlockByRefDeclsPtrSet.insert(VD);
      BlockByRefDecls.push_back(VD);
    }

    // imported objects in the inner blocks not used in the outer
    // blocks must be copied/disposed in the outer block as well.
    if (VD->getType()->isObjCObjectPointerType() ||
        VD->getType()->isBlockPointerType())
      ImportedBlockDecls.insert(VD);
  }

  std::string ImplTag = "__" + FunName.str() + "_block_impl_" + utostr(i);
  std::string DescTag = "__" + FunName.str() + "_block_desc_" + utostr(i);

  std::string CI = SynthesizeBlockImpl(Blocks[i], ImplTag, DescTag);

  InsertText(FunLocStart, CI);

  std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, ImplTag);

  InsertText(FunLocStart, CF);

  if (ImportedBlockDecls.size()) {
    std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, ImplTag);
    InsertText(FunLocStart, HF);
  }
  std::string BD = SynthesizeBlockDescriptor(DescTag, ImplTag, i, FunName,
                                             ImportedBlockDecls.size() > 0);
  InsertText(FunLocStart, BD);

  BlockDeclRefs.clear();
  BlockByRefDecls.clear();
  BlockByRefDeclsPtrSet.clear();
  BlockByCopyDecls.clear();
  BlockByCopyDeclsPtrSet.clear();
  ImportedBlockDecls.clear();
}
if (RewriteSC) {
  // Must insert any 'const/volatile/static here. Since it has been
  // removed as result of rewriting of block literals.
  std::string SC;
  if (GlobalVarDecl->getStorageClass() == SC_Static)
    SC = "static ";
  if (GlobalVarDecl->getType().isConstQualified())
    SC += "const ";
  if (GlobalVarDecl->getType().isVolatileQualified())
    SC += "volatile ";
  if (GlobalVarDecl->getType().isRestrictQualified())
    SC += "restrict ";
  InsertText(FunLocStart, SC);
}
if (GlobalConstructionExp) {
  // extra fancy dance for global literal expression.

  // Always the latest block expression on the block stack.
  std::string Tag = "__";
  Tag += FunName;
  Tag += "_block_impl_";
  Tag += utostr(Blocks.size()-1);
  std::string globalBuf = "static ";
  globalBuf += Tag; globalBuf += " ";
  std::string SStr;

  llvm::raw_string_ostream constructorExprBuf(SStr);
  GlobalConstructionExp->printPretty(constructorExprBuf, nullptr,
                                     PrintingPolicy(LangOpts));
  globalBuf += constructorExprBuf.str();
  globalBuf += ";\n";
  InsertText(FunLocStart, globalBuf);
  GlobalConstructionExp = nullptr;
}

Blocks.clear();
InnerDeclRefsCount.clear();
InnerDeclRefs.clear();
RewrittenBlockExprs.clear();
4431}

4433void RewriteModernObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) {
SourceLocation FunLocStart =
  (!Blocks.empty()) ? getFunctionSourceLocation(*this, FD)
                    : FD->getTypeSpecStartLoc();
StringRef FuncName = FD->getName();

SynthesizeBlockLiterals(FunLocStart, FuncName);
4440}

4442static void BuildUniqueMethodName(std::string &Name,
                                ObjCMethodDecl *MD) {
ObjCInterfaceDecl *IFace = MD->getClassInterface();
Name = std::string(IFace->getName());
Name += "__" + MD->getSelector().getAsString();
// Convert colons to underscores.
std::string::size_type loc = 0;
while ((loc = Name.find(':', loc)) != std::string::npos)
  Name.replace(loc, 1, "_");
4451}

4453void RewriteModernObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) {
// fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n");
// SourceLocation FunLocStart = MD->getBeginLoc();
SourceLocation FunLocStart = MD->getBeginLoc();
std::string FuncName;
BuildUniqueMethodName(FuncName, MD);
SynthesizeBlockLiterals(FunLocStart, FuncName);
4460}

4462void RewriteModernObjC::GetBlockDeclRefExprs(Stmt *S) {
for (Stmt *SubStmt : S->children())
  if (SubStmt) {
    if (BlockExpr *CBE = dyn_cast<BlockExpr>(SubStmt))
      GetBlockDeclRefExprs(CBE->getBody());
    else
      GetBlockDeclRefExprs(SubStmt);
  }
// Handle specific things.
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S))
  if (DRE->refersToEnclosingVariableOrCapture() ||
      HasLocalVariableExternalStorage(DRE->getDecl()))
    // FIXME: Handle enums.
    BlockDeclRefs.push_back(DRE);
4476}

4478void RewriteModernObjC::GetInnerBlockDeclRefExprs(Stmt *S,
              SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
              llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts) {
for (Stmt *SubStmt : S->children())
  if (SubStmt) {
    if (BlockExpr *CBE = dyn_cast<BlockExpr>(SubStmt)) {
      InnerContexts.insert(cast<DeclContext>(CBE->getBlockDecl()));
      GetInnerBlockDeclRefExprs(CBE->getBody(),
                                InnerBlockDeclRefs,
                                InnerContexts);
    }
    else
      GetInnerBlockDeclRefExprs(SubStmt, InnerBlockDeclRefs, InnerContexts);
  }
// Handle specific things.
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
  if (DRE->refersToEnclosingVariableOrCapture() ||
      HasLocalVariableExternalStorage(DRE->getDecl())) {
    if (!InnerContexts.count(DRE->getDecl()->getDeclContext()))
      InnerBlockDeclRefs.push_back(DRE);
    if (VarDecl *Var = cast<VarDecl>(DRE->getDecl()))
      if (Var->isFunctionOrMethodVarDecl())
        ImportedLocalExternalDecls.insert(Var);
  }
}
4503}

4505/// convertObjCTypeToCStyleType - This routine converts such objc types
4506/// as qualified objects, and blocks to their closest c/c++ types that
4507/// it can. It returns true if input type was modified.
4508bool RewriteModernObjC::convertObjCTypeToCStyleType(QualType &T) {
QualType oldT = T;
convertBlockPointerToFunctionPointer(T);
if (T->isFunctionPointerType()) {
  QualType PointeeTy;
  if (const PointerType* PT = T->getAs<PointerType>()) {
    PointeeTy = PT->getPointeeType();
    if (const FunctionType *FT = PointeeTy->getAs<FunctionType>()) {
      T = convertFunctionTypeOfBlocks(FT);
      T = Context->getPointerType(T);
    }
  }
}

convertToUnqualifiedObjCType(T);
return T != oldT;
4524}

4526/// convertFunctionTypeOfBlocks - This routine converts a function type
4527/// whose result type may be a block pointer or whose argument type(s)
4528/// might be block pointers to an equivalent function type replacing
4529/// all block pointers to function pointers.
4530QualType RewriteModernObjC::convertFunctionTypeOfBlocks(const FunctionType *FT) {
const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
// FTP will be null for closures that don't take arguments.
// Generate a funky cast.
SmallVector<QualType, 8> ArgTypes;
QualType Res = FT->getReturnType();
bool modified = convertObjCTypeToCStyleType(Res);

if (FTP) {
  for (auto &I : FTP->param_types()) {
    QualType t = I;
    // Make sure we convert "t (^)(...)" to "t (*)(...)".
    if (convertObjCTypeToCStyleType(t))
      modified = true;
    ArgTypes.push_back(t);
  }
}
QualType FuncType;
if (modified)
  FuncType = getSimpleFunctionType(Res, ArgTypes);
else FuncType = QualType(FT, 0);
return FuncType;
4552}

4554Stmt *RewriteModernObjC::SynthesizeBlockCall(CallExpr *Exp, const Expr *BlockExp) {
// Navigate to relevant type information.
const BlockPointerType *CPT = nullptr;

if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BlockExp)) {
  CPT = DRE->getType()->getAs<BlockPointerType>();
} else if (const MemberExpr *MExpr = dyn_cast<MemberExpr>(BlockExp)) {
  CPT = MExpr->getType()->getAs<BlockPointerType>();
}
else if (const ParenExpr *PRE = dyn_cast<ParenExpr>(BlockExp)) {
  return SynthesizeBlockCall(Exp, PRE->getSubExpr());
}
else if (const ImplicitCastExpr *IEXPR = dyn_cast<ImplicitCastExpr>(BlockExp))
  CPT = IEXPR->getType()->getAs<BlockPointerType>();
else if (const ConditionalOperator *CEXPR =
          dyn_cast<ConditionalOperator>(BlockExp)) {
  Expr *LHSExp = CEXPR->getLHS();
  Stmt *LHSStmt = SynthesizeBlockCall(Exp, LHSExp);
  Expr *RHSExp = CEXPR->getRHS();
  Stmt *RHSStmt = SynthesizeBlockCall(Exp, RHSExp);
  Expr *CONDExp = CEXPR->getCond();
  ConditionalOperator *CondExpr =
    new (Context) ConditionalOperator(CONDExp,
                                    SourceLocation(), cast<Expr>(LHSStmt),
                                    SourceLocation(), cast<Expr>(RHSStmt),
                                    Exp->getType(), VK_RValue, OK_Ordinary);
  return CondExpr;
} else if (const ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(BlockExp)) {
  CPT = IRE->getType()->getAs<BlockPointerType>();
} else if (const PseudoObjectExpr *POE
             = dyn_cast<PseudoObjectExpr>(BlockExp)) {
  CPT = POE->getType()->castAs<BlockPointerType>();
} else {
  assert(false && "RewriteBlockClass: Bad type")((false && "RewriteBlockClass: Bad type") ? static_cast
<void> (0) : __assert_fail ("false && \"RewriteBlockClass: Bad type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4587, __PRETTY_FUNCTION__));
}
assert(CPT && "RewriteBlockClass: Bad type")((CPT && "RewriteBlockClass: Bad type") ? static_cast
<void> (0) : __assert_fail ("CPT && \"RewriteBlockClass: Bad type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4589, __PRETTY_FUNCTION__));
const FunctionType *FT = CPT->getPointeeType()->getAs<FunctionType>();
assert(FT && "RewriteBlockClass: Bad type")((FT && "RewriteBlockClass: Bad type") ? static_cast<
void> (0) : __assert_fail ("FT && \"RewriteBlockClass: Bad type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4591, __PRETTY_FUNCTION__));
const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
// FTP will be null for closures that don't take arguments.

RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
                                    SourceLocation(), SourceLocation(),
                                    &Context->Idents.get("__block_impl"));
QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD));

// Generate a funky cast.
SmallVector<QualType, 8> ArgTypes;

// Push the block argument type.
ArgTypes.push_back(PtrBlock);
if (FTP) {
  for (auto &I : FTP->param_types()) {
    QualType t = I;
    // Make sure we convert "t (^)(...)" to "t (*)(...)".
    if (!convertBlockPointerToFunctionPointer(t))
      convertToUnqualifiedObjCType(t);
    ArgTypes.push_back(t);
  }
}
// Now do the pointer to function cast.
QualType PtrToFuncCastType = getSimpleFunctionType(Exp->getType(), ArgTypes);

PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType);

CastExpr *BlkCast = NoTypeInfoCStyleCastExpr(Context, PtrBlock,
                                             CK_BitCast,
                                             const_cast<Expr*>(BlockExp));
// Don't forget the parens to enforce the proper binding.
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
                                        BlkCast);
//PE->dump();

FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                  SourceLocation(),
                                  &Context->Idents.get("FuncPtr"),
                                  Context->VoidPtrTy, nullptr,
                                  /*BitWidth=*/nullptr, /*Mutable=*/true,
                                  ICIS_NoInit);
MemberExpr *ME = MemberExpr::CreateImplicit(
    *Context, PE, true, FD, FD->getType(), VK_LValue, OK_Ordinary);

CastExpr *FunkCast = NoTypeInfoCStyleCastExpr(Context, PtrToFuncCastType,
                                              CK_BitCast, ME);
PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast);

SmallVector<Expr*, 8> BlkExprs;
// Add the implicit argument.
BlkExprs.push_back(BlkCast);
// Add the user arguments.
for (CallExpr::arg_iterator I = Exp->arg_begin(),
     E = Exp->arg_end(); I != E; ++I) {
  BlkExprs.push_back(*I);
}
CallExpr *CE = CallExpr::Create(*Context, PE, BlkExprs, Exp->getType(),
                                VK_RValue, SourceLocation());
return CE;
4651}

4653// We need to return the rewritten expression to handle cases where the
4654// DeclRefExpr is embedded in another expression being rewritten.
4655// For example:
4656//
4657// int main() {
4658//    __block Foo *f;
4659//    __block int i;
4660//
4661//    void (^myblock)() = ^() {
4662//        [f test]; // f is a DeclRefExpr embedded in a message (which is being rewritten).
4663//        i = 77;
4664//    };
4665//}
4666Stmt *RewriteModernObjC::RewriteBlockDeclRefExpr(DeclRefExpr *DeclRefExp) {
// Rewrite the byref variable into BYREFVAR->__forwarding->BYREFVAR
// for each DeclRefExp where BYREFVAR is name of the variable.
ValueDecl *VD = DeclRefExp->getDecl();
bool isArrow = DeclRefExp->refersToEnclosingVariableOrCapture() ||
               HasLocalVariableExternalStorage(DeclRefExp->getDecl());

FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                  SourceLocation(),
                                  &Context->Idents.get("__forwarding"),
                                  Context->VoidPtrTy, nullptr,
                                  /*BitWidth=*/nullptr, /*Mutable=*/true,
                                  ICIS_NoInit);
MemberExpr *ME = MemberExpr::CreateImplicit(
    *Context, DeclRefExp, isArrow, FD, FD->getType(), VK_LValue, OK_Ordinary);

StringRef Name = VD->getName();
FD = FieldDecl::Create(*Context, nullptr, SourceLocation(), SourceLocation(),
                       &Context->Idents.get(Name),
                       Context->VoidPtrTy, nullptr,
                       /*BitWidth=*/nullptr, /*Mutable=*/true,
                       ICIS_NoInit);
ME = MemberExpr::CreateImplicit(*Context, ME, true, FD, DeclRefExp->getType(),
                                VK_LValue, OK_Ordinary);

// Need parens to enforce precedence.
ParenExpr *PE = new (Context) ParenExpr(DeclRefExp->getExprLoc(),
                                        DeclRefExp->getExprLoc(),
                                        ME);
ReplaceStmt(DeclRefExp, PE);
return PE;
4697}

4699// Rewrites the imported local variable V with external storage
4700// (static, extern, etc.) as *V
4701//
4702Stmt *RewriteModernObjC::RewriteLocalVariableExternalStorage(DeclRefExpr *DRE) {
ValueDecl *VD = DRE->getDecl();
if (VarDecl *Var = dyn_cast<VarDecl>(VD))
  if (!ImportedLocalExternalDecls.count(Var))
    return DRE;
Expr *Exp = new (Context) UnaryOperator(DRE, UO_Deref, DRE->getType(),
                                        VK_LValue, OK_Ordinary,
                                        DRE->getLocation(), false);
// Need parens to enforce precedence.
ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
                                        Exp);
ReplaceStmt(DRE, PE);
return PE;
4715}

4717void RewriteModernObjC::RewriteCastExpr(CStyleCastExpr *CE) {
SourceLocation LocStart = CE->getLParenLoc();
SourceLocation LocEnd = CE->getRParenLoc();

// Need to avoid trying to rewrite synthesized casts.
if (LocStart.isInvalid())
  return;
// Need to avoid trying to rewrite casts contained in macros.
if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd))
  return;

const char *startBuf = SM->getCharacterData(LocStart);
const char *endBuf = SM->getCharacterData(LocEnd);
QualType QT = CE->getType();
const Type* TypePtr = QT->getAs<Type>();
if (isa<TypeOfExprType>(TypePtr)) {
  const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
  QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
  std::string TypeAsString = "(";
  RewriteBlockPointerType(TypeAsString, QT);
  TypeAsString += ")";
  ReplaceText(LocStart, endBuf-startBuf+1, TypeAsString);
  return;
}
// advance the location to startArgList.
const char *argPtr = startBuf;

while (*argPtr++ && (argPtr < endBuf)) {
  switch (*argPtr) {
  case '^':
    // Replace the '^' with '*'.
    LocStart = LocStart.getLocWithOffset(argPtr-startBuf);
    ReplaceText(LocStart, 1, "*");
    break;
  }
}
4753}

4755void RewriteModernObjC::RewriteImplicitCastObjCExpr(CastExpr *IC) {
CastKind CastKind = IC->getCastKind();
if (CastKind != CK_BlockPointerToObjCPointerCast &&
    CastKind != CK_AnyPointerToBlockPointerCast)
  return;

QualType QT = IC->getType();
(void)convertBlockPointerToFunctionPointer(QT);
std::string TypeString(QT.getAsString(Context->getPrintingPolicy()));
std::string Str = "(";
Str += TypeString;
Str += ")";
InsertText(IC->getSubExpr()->getBeginLoc(), Str);
4768}

4770void RewriteModernObjC::RewriteBlockPointerFunctionArgs(FunctionDecl *FD) {
SourceLocation DeclLoc = FD->getLocation();
unsigned parenCount = 0;

// We have 1 or more arguments that have closure pointers.
const char *startBuf = SM->getCharacterData(DeclLoc);
const char *startArgList = strchr(startBuf, '(');

assert((*startArgList == '(') && "Rewriter fuzzy parser confused")(((*startArgList == '(') && "Rewriter fuzzy parser confused"
) ? static_cast<void> (0) : __assert_fail ("(*startArgList == '(') && \"Rewriter fuzzy parser confused\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4778, __PRETTY_FUNCTION__));

parenCount++;
// advance the location to startArgList.
DeclLoc = DeclLoc.getLocWithOffset(startArgList-startBuf);
assert((DeclLoc.isValid()) && "Invalid DeclLoc")(((DeclLoc.isValid()) && "Invalid DeclLoc") ? static_cast
<void> (0) : __assert_fail ("(DeclLoc.isValid()) && \"Invalid DeclLoc\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4783, __PRETTY_FUNCTION__));

const char *argPtr = startArgList;

while (*argPtr++ && parenCount) {
  switch (*argPtr) {
  case '^':
    // Replace the '^' with '*'.
    DeclLoc = DeclLoc.getLocWithOffset(argPtr-startArgList);
    ReplaceText(DeclLoc, 1, "*");
    break;
  case '(':
    parenCount++;
    break;
  case ')':
    parenCount--;
    break;
  }
}
4802}

4804bool RewriteModernObjC::PointerTypeTakesAnyBlockArguments(QualType QT) {
const FunctionProtoType *FTP;
const PointerType *PT = QT->getAs<PointerType>();
if (PT) {
  FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
} else {
  const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
  assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type")((BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type"
) ? static_cast<void> (0) : __assert_fail ("BPT && \"BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4811, __PRETTY_FUNCTION__));
  FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
}
if (FTP) {
  for (const auto &I : FTP->param_types())
    if (isTopLevelBlockPointerType(I))
      return true;
}
return false;
4820}

4822bool RewriteModernObjC::PointerTypeTakesAnyObjCQualifiedType(QualType QT) {
const FunctionProtoType *FTP;
const PointerType *PT = QT->getAs<PointerType>();
if (PT) {
  FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
} else {
  const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
  assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type")((BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type"
) ? static_cast<void> (0) : __assert_fail ("BPT && \"BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4829, __PRETTY_FUNCTION__));
  FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
}
if (FTP) {
  for (const auto &I : FTP->param_types()) {
    if (I->isObjCQualifiedIdType())
      return true;
    if (I->isObjCObjectPointerType() &&
        I->getPointeeType()->isObjCQualifiedInterfaceType())
      return true;
  }

}
return false;
4843}

4845void RewriteModernObjC::GetExtentOfArgList(const char *Name, const char *&LParen,
                                   const char *&RParen) {
const char *argPtr = strchr(Name, '(');
assert((*argPtr == '(') && "Rewriter fuzzy parser confused")(((*argPtr == '(') && "Rewriter fuzzy parser confused"
) ? static_cast<void> (0) : __assert_fail ("(*argPtr == '(') && \"Rewriter fuzzy parser confused\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4848, __PRETTY_FUNCTION__));

LParen = argPtr; // output the start.
argPtr++; // skip past the left paren.
unsigned parenCount = 1;

while (*argPtr && parenCount) {
  switch (*argPtr) {
  case '(': parenCount++; break;
  case ')': parenCount--; break;
  default: break;
  }
  if (parenCount) argPtr++;
}
assert((*argPtr == ')') && "Rewriter fuzzy parser confused")(((*argPtr == ')') && "Rewriter fuzzy parser confused"
) ? static_cast<void> (0) : __assert_fail ("(*argPtr == ')') && \"Rewriter fuzzy parser confused\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4862, __PRETTY_FUNCTION__));
RParen = argPtr; // output the end
4864}

4866void RewriteModernObjC::RewriteBlockPointerDecl(NamedDecl *ND) {
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
  RewriteBlockPointerFunctionArgs(FD);
  return;
}
// Handle Variables and Typedefs.
SourceLocation DeclLoc = ND->getLocation();
QualType DeclT;
if (VarDecl *VD = dyn_cast<VarDecl>(ND))
  DeclT = VD->getType();
else if (TypedefNameDecl *TDD = dyn_cast<TypedefNameDecl>(ND))
  DeclT = TDD->getUnderlyingType();
else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND))
  DeclT = FD->getType();
else
  llvm_unreachable("RewriteBlockPointerDecl(): Decl type not yet handled")::llvm::llvm_unreachable_internal("RewriteBlockPointerDecl(): Decl type not yet handled"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 4881);

const char *startBuf = SM->getCharacterData(DeclLoc);
const char *endBuf = startBuf;
// scan backward (from the decl location) for the end of the previous decl.
while (*startBuf != '^' && *startBuf != ';' && startBuf != MainFileStart)
  startBuf--;
SourceLocation Start = DeclLoc.getLocWithOffset(startBuf-endBuf);
std::string buf;
unsigned OrigLength=0;
// *startBuf != '^' if we are dealing with a pointer to function that
// may take block argument types (which will be handled below).
if (*startBuf == '^') {
  // Replace the '^' with '*', computing a negative offset.
  buf = '*';
  startBuf++;
  OrigLength++;
}
while (*startBuf != ')') {
  buf += *startBuf;
  startBuf++;
  OrigLength++;
}
buf += ')';
OrigLength++;

if (PointerTypeTakesAnyBlockArguments(DeclT) ||
    PointerTypeTakesAnyObjCQualifiedType(DeclT)) {
  // Replace the '^' with '*' for arguments.
  // Replace id<P> with id/*<>*/
  DeclLoc = ND->getLocation();
  startBuf = SM->getCharacterData(DeclLoc);
  const char *argListBegin, *argListEnd;
  GetExtentOfArgList(startBuf, argListBegin, argListEnd);
  while (argListBegin < argListEnd) {
    if (*argListBegin == '^')
      buf += '*';
    else if (*argListBegin ==  '<') {
      buf += "/*";
      buf += *argListBegin++;
      OrigLength++;
      while (*argListBegin != '>') {
        buf += *argListBegin++;
        OrigLength++;
      }
      buf += *argListBegin;
      buf += "*/";
    }
    else
      buf += *argListBegin;
    argListBegin++;
    OrigLength++;
  }
  buf += ')';
  OrigLength++;
}
ReplaceText(Start, OrigLength, buf);
4938}

4940/// SynthesizeByrefCopyDestroyHelper - This routine synthesizes:
4941/// void __Block_byref_id_object_copy(struct Block_byref_id_object *dst,
4942///                    struct Block_byref_id_object *src) {
4943///  _Block_object_assign (&_dest->object, _src->object,
4944///                        BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
4945///                        [|BLOCK_FIELD_IS_WEAK]) // object
4946///  _Block_object_assign(&_dest->object, _src->object,
4947///                       BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
4948///                       [|BLOCK_FIELD_IS_WEAK]) // block
4949/// }
4950/// And:
4951/// void __Block_byref_id_object_dispose(struct Block_byref_id_object *_src) {
4952///  _Block_object_dispose(_src->object,
4953///                        BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
4954///                        [|BLOCK_FIELD_IS_WEAK]) // object
4955///  _Block_object_dispose(_src->object,
4956///                         BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
4957///                         [|BLOCK_FIELD_IS_WEAK]) // block
4958/// }

4960std::string RewriteModernObjC::SynthesizeByrefCopyDestroyHelper(VarDecl *VD,
                                                        int flag) {
std::string S;
if (CopyDestroyCache.count(flag))
  return S;
CopyDestroyCache.insert(flag);
S = "static void __Block_byref_id_object_copy_";
S += utostr(flag);
S += "(void *dst, void *src) {\n";

// offset into the object pointer is computed as:
// void * + void* + int + int + void* + void *
unsigned IntSize =
static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
unsigned VoidPtrSize =
static_cast<unsigned>(Context->getTypeSize(Context->VoidPtrTy));

unsigned offset = (VoidPtrSize*4 + IntSize + IntSize)/Context->getCharWidth();
S += " _Block_object_assign((char*)dst + ";
S += utostr(offset);
S += ", *(void * *) ((char*)src + ";
S += utostr(offset);
S += "), ";
S += utostr(flag);
S += ");\n}\n";

S += "static void __Block_byref_id_object_dispose_";
S += utostr(flag);
S += "(void *src) {\n";
S += " _Block_object_dispose(*(void * *) ((char*)src + ";
S += utostr(offset);
S += "), ";
S += utostr(flag);
S += ");\n}\n";
return S;
4995}

4997/// RewriteByRefVar - For each __block typex ND variable this routine transforms
4998/// the declaration into:
4999/// struct __Block_byref_ND {
5000/// void *__isa;                  // NULL for everything except __weak pointers
5001/// struct __Block_byref_ND *__forwarding;
5002/// int32_t __flags;
5003/// int32_t __size;
5004/// void *__Block_byref_id_object_copy; // If variable is __block ObjC object
5005/// void *__Block_byref_id_object_dispose; // If variable is __block ObjC object
5006/// typex ND;
5007/// };
5008///
5009/// It then replaces declaration of ND variable with:
5010/// struct __Block_byref_ND ND = {__isa=0B, __forwarding=&ND, __flags=some_flag,
5011///                               __size=sizeof(struct __Block_byref_ND),
5012///                               ND=initializer-if-any};
5013///
5014///
5015void RewriteModernObjC::RewriteByRefVar(VarDecl *ND, bool firstDecl,
                                      bool lastDecl) {
int flag = 0;
int isa = 0;
SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
if (DeclLoc.isInvalid())
  // If type location is missing, it is because of missing type (a warning).
  // Use variable's location which is good for this case.
  DeclLoc = ND->getLocation();
const char *startBuf = SM->getCharacterData(DeclLoc);
SourceLocation X = ND->getEndLoc();
X = SM->getExpansionLoc(X);
const char *endBuf = SM->getCharacterData(X);
std::string Name(ND->getNameAsString());
std::string ByrefType;
RewriteByRefString(ByrefType, Name, ND, true);
ByrefType += " {\n";
ByrefType += "  void *__isa;\n";
RewriteByRefString(ByrefType, Name, ND);
ByrefType += " *__forwarding;\n";
ByrefType += " int __flags;\n";
ByrefType += " int __size;\n";
// Add void *__Block_byref_id_object_copy;
// void *__Block_byref_id_object_dispose; if needed.
QualType Ty = ND->getType();
bool HasCopyAndDispose = Context->BlockRequiresCopying(Ty, ND);
if (HasCopyAndDispose) {
  ByrefType += " void (*__Block_byref_id_object_copy)(void*, void*);\n";
  ByrefType += " void (*__Block_byref_id_object_dispose)(void*);\n";
}

QualType T = Ty;
(void)convertBlockPointerToFunctionPointer(T);
T.getAsStringInternal(Name, Context->getPrintingPolicy());

ByrefType += " " + Name + ";\n";
ByrefType += "};\n";
// Insert this type in global scope. It is needed by helper function.
SourceLocation FunLocStart;
if (CurFunctionDef)
   FunLocStart = getFunctionSourceLocation(*this, CurFunctionDef);
else {
  assert(CurMethodDef && "RewriteByRefVar - CurMethodDef is null")((CurMethodDef && "RewriteByRefVar - CurMethodDef is null"
) ? static_cast<void> (0) : __assert_fail ("CurMethodDef && \"RewriteByRefVar - CurMethodDef is null\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5057, __PRETTY_FUNCTION__));
  FunLocStart = CurMethodDef->getBeginLoc();
}
InsertText(FunLocStart, ByrefType);

if (Ty.isObjCGCWeak()) {
  flag |= BLOCK_FIELD_IS_WEAK;
  isa = 1;
}
if (HasCopyAndDispose) {
  flag = BLOCK_BYREF_CALLER;
  QualType Ty = ND->getType();
  // FIXME. Handle __weak variable (BLOCK_FIELD_IS_WEAK) as well.
  if (Ty->isBlockPointerType())
    flag |= BLOCK_FIELD_IS_BLOCK;
  else
    flag |= BLOCK_FIELD_IS_OBJECT;
  std::string HF = SynthesizeByrefCopyDestroyHelper(ND, flag);
  if (!HF.empty())
    Preamble += HF;
}

// struct __Block_byref_ND ND =
// {0, &ND, some_flag, __size=sizeof(struct __Block_byref_ND),
//  initializer-if-any};
bool hasInit = (ND->getInit() != nullptr);
// FIXME. rewriter does not support __block c++ objects which
// require construction.
if (hasInit)
  if (CXXConstructExpr *CExp = dyn_cast<CXXConstructExpr>(ND->getInit())) {
    CXXConstructorDecl *CXXDecl = CExp->getConstructor();
    if (CXXDecl && CXXDecl->isDefaultConstructor())
      hasInit = false;
  }

unsigned flags = 0;
if (HasCopyAndDispose)
  flags |= BLOCK_HAS_COPY_DISPOSE;
Name = ND->getNameAsString();
ByrefType.clear();
RewriteByRefString(ByrefType, Name, ND);
std::string ForwardingCastType("(");
ForwardingCastType += ByrefType + " *)";
ByrefType += " " + Name + " = {(void*)";
ByrefType += utostr(isa);
ByrefType += "," +  ForwardingCastType + "&" + Name + ", ";
ByrefType += utostr(flags);
ByrefType += ", ";
ByrefType += "sizeof(";
RewriteByRefString(ByrefType, Name, ND);
ByrefType += ")";
if (HasCopyAndDispose) {
  ByrefType += ", __Block_byref_id_object_copy_";
  ByrefType += utostr(flag);
  ByrefType += ", __Block_byref_id_object_dispose_";
  ByrefType += utostr(flag);
}

if (!firstDecl) {
  // In multiple __block declarations, and for all but 1st declaration,
  // find location of the separating comma. This would be start location
  // where new text is to be inserted.
  DeclLoc = ND->getLocation();
  const char *startDeclBuf = SM->getCharacterData(DeclLoc);
  const char *commaBuf = startDeclBuf;
  while (*commaBuf != ',')
    commaBuf--;
  assert((*commaBuf == ',') && "RewriteByRefVar: can't find ','")(((*commaBuf == ',') && "RewriteByRefVar: can't find ','"
) ? static_cast<void> (0) : __assert_fail ("(*commaBuf == ',') && \"RewriteByRefVar: can't find ','\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5124, __PRETTY_FUNCTION__));
  DeclLoc = DeclLoc.getLocWithOffset(commaBuf - startDeclBuf);
  startBuf = commaBuf;
}

if (!hasInit) {
  ByrefType += "};\n";
  unsigned nameSize = Name.size();
  // for block or function pointer declaration. Name is already
  // part of the declaration.
  if (Ty->isBlockPointerType() || Ty->isFunctionPointerType())
    nameSize = 1;
  ReplaceText(DeclLoc, endBuf-startBuf+nameSize, ByrefType);
}
else {
  ByrefType += ", ";
  SourceLocation startLoc;
  Expr *E = ND->getInit();
  if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
    startLoc = ECE->getLParenLoc();
  else
    startLoc = E->getBeginLoc();
  startLoc = SM->getExpansionLoc(startLoc);
  endBuf = SM->getCharacterData(startLoc);
  ReplaceText(DeclLoc, endBuf-startBuf, ByrefType);

  const char separator = lastDecl ? ';' : ',';
  const char *startInitializerBuf = SM->getCharacterData(startLoc);
  const char *separatorBuf = strchr(startInitializerBuf, separator);
  assert((*separatorBuf == separator) &&(((*separatorBuf == separator) && "RewriteByRefVar: can't find ';' or ','"
) ? static_cast<void> (0) : __assert_fail ("(*separatorBuf == separator) && \"RewriteByRefVar: can't find ';' or ','\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5154, __PRETTY_FUNCTION__))
         "RewriteByRefVar: can't find ';' or ','")(((*separatorBuf == separator) && "RewriteByRefVar: can't find ';' or ','"
) ? static_cast<void> (0) : __assert_fail ("(*separatorBuf == separator) && \"RewriteByRefVar: can't find ';' or ','\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5154, __PRETTY_FUNCTION__));
  SourceLocation separatorLoc =
    startLoc.getLocWithOffset(separatorBuf-startInitializerBuf);

  InsertText(separatorLoc, lastDecl ? "}" : "};\n");
}
5160}

5162void RewriteModernObjC::CollectBlockDeclRefInfo(BlockExpr *Exp) {
// Add initializers for any closure decl refs.
GetBlockDeclRefExprs(Exp->getBody());
if (BlockDeclRefs.size()) {
  // Unique all "by copy" declarations.
  for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
    if (!BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
      if (!BlockByCopyDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
        BlockByCopyDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
        BlockByCopyDecls.push_back(BlockDeclRefs[i]->getDecl());
      }
    }
  // Unique all "by ref" declarations.
  for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
    if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
      if (!BlockByRefDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
        BlockByRefDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
        BlockByRefDecls.push_back(BlockDeclRefs[i]->getDecl());
      }
    }
  // Find any imported blocks...they will need special attention.
  for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
    if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
        BlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
        BlockDeclRefs[i]->getType()->isBlockPointerType())
      ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl());
}
5189}

5191FunctionDecl *RewriteModernObjC::SynthBlockInitFunctionDecl(StringRef name) {
IdentifierInfo *ID = &Context->Idents.get(name);
QualType FType = Context->getFunctionNoProtoType(Context->VoidPtrTy);
return FunctionDecl::Create(*Context, TUDecl, SourceLocation(),
                            SourceLocation(), ID, FType, nullptr, SC_Extern,
                            false, false);
5197}

5199Stmt *RewriteModernObjC::SynthBlockInitExpr(BlockExpr *Exp,
                   const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs) {
const BlockDecl *block = Exp->getBlockDecl();

Blocks.push_back(Exp);

CollectBlockDeclRefInfo(Exp);

// Add inner imported variables now used in current block.
int countOfInnerDecls = 0;
if (!InnerBlockDeclRefs.empty()) {
  for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++) {
    DeclRefExpr *Exp = InnerBlockDeclRefs[i];
    ValueDecl *VD = Exp->getDecl();
    if (!VD->hasAttr<BlocksAttr>() && !BlockByCopyDeclsPtrSet.count(VD)) {
    // We need to save the copied-in variables in nested
    // blocks because it is needed at the end for some of the API generations.
    // See SynthesizeBlockLiterals routine.
      InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
      BlockDeclRefs.push_back(Exp);
      BlockByCopyDeclsPtrSet.insert(VD);
      BlockByCopyDecls.push_back(VD);
    }
    if (VD->hasAttr<BlocksAttr>() && !BlockByRefDeclsPtrSet.count(VD)) {
      InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
      BlockDeclRefs.push_back(Exp);
      BlockByRefDeclsPtrSet.insert(VD);
      BlockByRefDecls.push_back(VD);
    }
  }
  // Find any imported blocks...they will need special attention.
  for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++)
    if (InnerBlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
        InnerBlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
        InnerBlockDeclRefs[i]->getType()->isBlockPointerType())
      ImportedBlockDecls.insert(InnerBlockDeclRefs[i]->getDecl());
}
InnerDeclRefsCount.push_back(countOfInnerDecls);

std::string FuncName;

if (CurFunctionDef)
  FuncName = CurFunctionDef->getNameAsString();
else if (CurMethodDef)
  BuildUniqueMethodName(FuncName, CurMethodDef);
else if (GlobalVarDecl)
  FuncName = std::string(GlobalVarDecl->getNameAsString());

bool GlobalBlockExpr =
  block->getDeclContext()->getRedeclContext()->isFileContext();

if (GlobalBlockExpr && !GlobalVarDecl) {
  Diags.Report(block->getLocation(), GlobalBlockRewriteFailedDiag);
  GlobalBlockExpr = false;
}

std::string BlockNumber = utostr(Blocks.size()-1);

std::string Func = "__" + FuncName + "_block_func_" + BlockNumber;

// Get a pointer to the function type so we can cast appropriately.
QualType BFT = convertFunctionTypeOfBlocks(Exp->getFunctionType());
QualType FType = Context->getPointerType(BFT);

FunctionDecl *FD;
Expr *NewRep;

// Simulate a constructor call...
std::string Tag;

if (GlobalBlockExpr)
  Tag = "__global_";
else
  Tag = "__";
Tag += FuncName + "_block_impl_" + BlockNumber;

FD = SynthBlockInitFunctionDecl(Tag);
DeclRefExpr *DRE = new (Context)
    DeclRefExpr(*Context, FD, false, FType, VK_RValue, SourceLocation());

SmallVector<Expr*, 4> InitExprs;

// Initialize the block function.
FD = SynthBlockInitFunctionDecl(Func);
DeclRefExpr *Arg = new (Context) DeclRefExpr(
    *Context, FD, false, FD->getType(), VK_LValue, SourceLocation());
CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
                                              CK_BitCast, Arg);
InitExprs.push_back(castExpr);

// Initialize the block descriptor.
std::string DescData = "__" + FuncName + "_block_desc_" + BlockNumber + "_DATA";

VarDecl *NewVD = VarDecl::Create(
    *Context, TUDecl, SourceLocation(), SourceLocation(),
    &Context->Idents.get(DescData), Context->VoidPtrTy, nullptr, SC_Static);
UnaryOperator *DescRefExpr = new (Context) UnaryOperator(
    new (Context) DeclRefExpr(*Context, NewVD, false, Context->VoidPtrTy,
                              VK_LValue, SourceLocation()),
    UO_AddrOf, Context->getPointerType(Context->VoidPtrTy), VK_RValue,
    OK_Ordinary, SourceLocation(), false);
InitExprs.push_back(DescRefExpr);

// Add initializers for any closure decl refs.
if (BlockDeclRefs.size()) {
  Expr *Exp;
  // Output all "by copy" declarations.
  for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
       E = BlockByCopyDecls.end(); I != E; ++I) {
    if (isObjCType((*I)->getType())) {
      // FIXME: Conform to ABI ([[obj retain] autorelease]).
      FD = SynthBlockInitFunctionDecl((*I)->getName());
      Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
                                      VK_LValue, SourceLocation());
      if (HasLocalVariableExternalStorage(*I)) {
        QualType QT = (*I)->getType();
        QT = Context->getPointerType(QT);
        Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
                                          OK_Ordinary, SourceLocation(),
                                          false);
      }
    } else if (isTopLevelBlockPointerType((*I)->getType())) {
      FD = SynthBlockInitFunctionDecl((*I)->getName());
      Arg = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
                                      VK_LValue, SourceLocation());
      Exp = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
                                     CK_BitCast, Arg);
    } else {
      FD = SynthBlockInitFunctionDecl((*I)->getName());
      Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
                                      VK_LValue, SourceLocation());
      if (HasLocalVariableExternalStorage(*I)) {
        QualType QT = (*I)->getType();
        QT = Context->getPointerType(QT);
        Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
                                          OK_Ordinary, SourceLocation(),
                                          false);
      }

    }
    InitExprs.push_back(Exp);
  }
  // Output all "by ref" declarations.
  for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
       E = BlockByRefDecls.end(); I != E; ++I) {
    ValueDecl *ND = (*I);
    std::string Name(ND->getNameAsString());
    std::string RecName;
    RewriteByRefString(RecName, Name, ND, true);
    IdentifierInfo *II = &Context->Idents.get(RecName.c_str()
                                              + sizeof("struct"));
    RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
                                        SourceLocation(), SourceLocation(),
                                        II);
    assert(RD && "SynthBlockInitExpr(): Can't find RecordDecl")((RD && "SynthBlockInitExpr(): Can't find RecordDecl"
) ? static_cast<void> (0) : __assert_fail ("RD && \"SynthBlockInitExpr(): Can't find RecordDecl\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5353, __PRETTY_FUNCTION__));
    QualType castT = Context->getPointerType(Context->getTagDeclType(RD));

    FD = SynthBlockInitFunctionDecl((*I)->getName());
    Exp = new (Context) DeclRefExpr(*Context, FD, false, FD->getType(),
                                    VK_LValue, SourceLocation());
    bool isNestedCapturedVar = false;
    if (block)
      for (const auto &CI : block->captures()) {
        const VarDecl *variable = CI.getVariable();
        if (variable == ND && CI.isNested()) {
          assert (CI.isByRef() &&((CI.isByRef() && "SynthBlockInitExpr - captured block variable is not byref"
) ? static_cast<void> (0) : __assert_fail ("CI.isByRef() && \"SynthBlockInitExpr - captured block variable is not byref\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5365, __PRETTY_FUNCTION__))
                  "SynthBlockInitExpr - captured block variable is not byref")((CI.isByRef() && "SynthBlockInitExpr - captured block variable is not byref"
) ? static_cast<void> (0) : __assert_fail ("CI.isByRef() && \"SynthBlockInitExpr - captured block variable is not byref\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5365, __PRETTY_FUNCTION__));
          isNestedCapturedVar = true;
          break;
        }
      }
    // captured nested byref variable has its address passed. Do not take
    // its address again.
    if (!isNestedCapturedVar)
        Exp = new (Context) UnaryOperator(Exp, UO_AddrOf,
                                   Context->getPointerType(Exp->getType()),
                                   VK_RValue, OK_Ordinary, SourceLocation(),
                                   false);
    Exp = NoTypeInfoCStyleCastExpr(Context, castT, CK_BitCast, Exp);
    InitExprs.push_back(Exp);
  }
}
if (ImportedBlockDecls.size()) {
  // generate BLOCK_HAS_COPY_DISPOSE(have helper funcs) | BLOCK_HAS_DESCRIPTOR
  int flag = (BLOCK_HAS_COPY_DISPOSE | BLOCK_HAS_DESCRIPTOR);
  unsigned IntSize =
    static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
  Expr *FlagExp = IntegerLiteral::Create(*Context, llvm::APInt(IntSize, flag),
                                         Context->IntTy, SourceLocation());
  InitExprs.push_back(FlagExp);
}
NewRep = CallExpr::Create(*Context, DRE, InitExprs, FType, VK_LValue,
                          SourceLocation());

if (GlobalBlockExpr) {
  assert (!GlobalConstructionExp &&((!GlobalConstructionExp && "SynthBlockInitExpr - GlobalConstructionExp must be null"
) ? static_cast<void> (0) : __assert_fail ("!GlobalConstructionExp && \"SynthBlockInitExpr - GlobalConstructionExp must be null\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5395, __PRETTY_FUNCTION__))
          "SynthBlockInitExpr - GlobalConstructionExp must be null")((!GlobalConstructionExp && "SynthBlockInitExpr - GlobalConstructionExp must be null"
) ? static_cast<void> (0) : __assert_fail ("!GlobalConstructionExp && \"SynthBlockInitExpr - GlobalConstructionExp must be null\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5395, __PRETTY_FUNCTION__));
  GlobalConstructionExp = NewRep;
  NewRep = DRE;
}

NewRep = new (Context) UnaryOperator(NewRep, UO_AddrOf,
                           Context->getPointerType(NewRep->getType()),
                           VK_RValue, OK_Ordinary, SourceLocation(), false);
NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CK_BitCast,
                                  NewRep);
// Put Paren around the call.
NewRep = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
                                 NewRep);

BlockDeclRefs.clear();
BlockByRefDecls.clear();
BlockByRefDeclsPtrSet.clear();
BlockByCopyDecls.clear();
BlockByCopyDeclsPtrSet.clear();
ImportedBlockDecls.clear();
return NewRep;
5416}

5418bool RewriteModernObjC::IsDeclStmtInForeachHeader(DeclStmt *DS) {
if (const ObjCForCollectionStmt * CS =
    dyn_cast<ObjCForCollectionStmt>(Stmts.back()))
      return CS->getElement() == DS;
return false;
5423}

5425//===----------------------------------------------------------------------===//
5426// Function Body / Expression rewriting
5427//===----------------------------------------------------------------------===//

5429Stmt *RewriteModernObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
    isa<DoStmt>(S) || isa<ForStmt>(S))
  Stmts.push_back(S);
else if (isa<ObjCForCollectionStmt>(S)) {
  Stmts.push_back(S);
  ObjCBcLabelNo.push_back(++BcLabelCount);
}

// Pseudo-object operations and ivar references need special
// treatment because we're going to recursively rewrite them.
if (PseudoObjectExpr *PseudoOp = dyn_cast<PseudoObjectExpr>(S)) {
  if (isa<BinaryOperator>(PseudoOp->getSyntacticForm())) {
    return RewritePropertyOrImplicitSetter(PseudoOp);
  } else {
    return RewritePropertyOrImplicitGetter(PseudoOp);
  }
} else if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S)) {
  return RewriteObjCIvarRefExpr(IvarRefExpr);
}
else if (isa<OpaqueValueExpr>(S))
  S = cast<OpaqueValueExpr>(S)->getSourceExpr();

SourceRange OrigStmtRange = S->getSourceRange();

// Perform a bottom up rewrite of all children.
for (Stmt *&childStmt : S->children())
  if (childStmt) {
    Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(childStmt);
    if (newStmt) {
      childStmt = newStmt;
    }
  }

if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
  SmallVector<DeclRefExpr *, 8> InnerBlockDeclRefs;
  llvm::SmallPtrSet<const DeclContext *, 8> InnerContexts;
  InnerContexts.insert(BE->getBlockDecl());
  ImportedLocalExternalDecls.clear();
  GetInnerBlockDeclRefExprs(BE->getBody(),
                            InnerBlockDeclRefs, InnerContexts);
  // Rewrite the block body in place.
  Stmt *SaveCurrentBody = CurrentBody;
  CurrentBody = BE->getBody();
  PropParentMap = nullptr;
  // block literal on rhs of a property-dot-sytax assignment
  // must be replaced by its synthesize ast so getRewrittenText
  // works as expected. In this case, what actually ends up on RHS
  // is the blockTranscribed which is the helper function for the
  // block literal; as in: self.c = ^() {[ace ARR];};
  bool saveDisableReplaceStmt = DisableReplaceStmt;
  DisableReplaceStmt = false;
  RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
  DisableReplaceStmt = saveDisableReplaceStmt;
  CurrentBody = SaveCurrentBody;
  PropParentMap = nullptr;
  ImportedLocalExternalDecls.clear();
  // Now we snarf the rewritten text and stash it away for later use.
  std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());
  RewrittenBlockExprs[BE] = Str;

  Stmt *blockTranscribed = SynthBlockInitExpr(BE, InnerBlockDeclRefs);

  //blockTranscribed->dump();
  ReplaceStmt(S, blockTranscribed);
  return blockTranscribed;
}
// Handle specific things.
if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S))
  return RewriteAtEncode(AtEncode);

if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S))
  return RewriteAtSelector(AtSelector);

if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S))
  return RewriteObjCStringLiteral(AtString);

if (ObjCBoolLiteralExpr *BoolLitExpr = dyn_cast<ObjCBoolLiteralExpr>(S))
  return RewriteObjCBoolLiteralExpr(BoolLitExpr);

if (ObjCBoxedExpr *BoxedExpr = dyn_cast<ObjCBoxedExpr>(S))
  return RewriteObjCBoxedExpr(BoxedExpr);

if (ObjCArrayLiteral *ArrayLitExpr = dyn_cast<ObjCArrayLiteral>(S))
  return RewriteObjCArrayLiteralExpr(ArrayLitExpr);

if (ObjCDictionaryLiteral *DictionaryLitExpr =
      dyn_cast<ObjCDictionaryLiteral>(S))
  return RewriteObjCDictionaryLiteralExpr(DictionaryLitExpr);

if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
5520#if 0
  // Before we rewrite it, put the original message expression in a comment.
  SourceLocation startLoc = MessExpr->getBeginLoc();
  SourceLocation endLoc = MessExpr->getEndLoc();

  const char *startBuf = SM->getCharacterData(startLoc);
  const char *endBuf = SM->getCharacterData(endLoc);

  std::string messString;
  messString += "// ";
  messString.append(startBuf, endBuf-startBuf+1);
  messString += "\n";

  // FIXME: Missing definition of
  // InsertText(clang::SourceLocation, char const*, unsigned int).
  // InsertText(startLoc, messString);
  // Tried this, but it didn't work either...
  // ReplaceText(startLoc, 0, messString.c_str(), messString.size());
5538#endif
  return RewriteMessageExpr(MessExpr);
}

if (ObjCAutoreleasePoolStmt *StmtAutoRelease =
      dyn_cast<ObjCAutoreleasePoolStmt>(S)) {
  return RewriteObjCAutoreleasePoolStmt(StmtAutoRelease);
}

if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S))
  return RewriteObjCTryStmt(StmtTry);

if (ObjCAtSynchronizedStmt *StmtTry = dyn_cast<ObjCAtSynchronizedStmt>(S))
  return RewriteObjCSynchronizedStmt(StmtTry);

if (ObjCAtThrowStmt *StmtThrow = dyn_cast<ObjCAtThrowStmt>(S))
  return RewriteObjCThrowStmt(StmtThrow);

if (ObjCProtocolExpr *ProtocolExp = dyn_cast<ObjCProtocolExpr>(S))
  return RewriteObjCProtocolExpr(ProtocolExp);

if (ObjCForCollectionStmt *StmtForCollection =
      dyn_cast<ObjCForCollectionStmt>(S))
  return RewriteObjCForCollectionStmt(StmtForCollection,
                                      OrigStmtRange.getEnd());
if (BreakStmt *StmtBreakStmt =
    dyn_cast<BreakStmt>(S))
  return RewriteBreakStmt(StmtBreakStmt);
if (ContinueStmt *StmtContinueStmt =
    dyn_cast<ContinueStmt>(S))
  return RewriteContinueStmt(StmtContinueStmt);

// Need to check for protocol refs (id <P>, Foo <P> *) in variable decls
// and cast exprs.
if (DeclStmt *DS = dyn_cast<DeclStmt>(S)) {
  // FIXME: What we're doing here is modifying the type-specifier that
  // precedes the first Decl.  In the future the DeclGroup should have
  // a separate type-specifier that we can rewrite.
  // NOTE: We need to avoid rewriting the DeclStmt if it is within
  // the context of an ObjCForCollectionStmt. For example:
  //   NSArray *someArray;
  //   for (id <FooProtocol> index in someArray) ;
  // This is because RewriteObjCForCollectionStmt() does textual rewriting
  // and it depends on the original text locations/positions.
  if (Stmts.empty() || !IsDeclStmtInForeachHeader(DS))
    RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin());

  // Blocks rewrite rules.
  for (DeclStmt::decl_iterator DI = DS->decl_begin(), DE = DS->decl_end();
       DI != DE; ++DI) {
    Decl *SD = *DI;
    if (ValueDecl *ND = dyn_cast<ValueDecl>(SD)) {
      if (isTopLevelBlockPointerType(ND->getType()))
        RewriteBlockPointerDecl(ND);
      else if (ND->getType()->isFunctionPointerType())
        CheckFunctionPointerDecl(ND->getType(), ND);
      if (VarDecl *VD = dyn_cast<VarDecl>(SD)) {
        if (VD->hasAttr<BlocksAttr>()) {
          static unsigned uniqueByrefDeclCount = 0;
          assert(!BlockByRefDeclNo.count(ND) &&((!BlockByRefDeclNo.count(ND) && "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl"
) ? static_cast<void> (0) : __assert_fail ("!BlockByRefDeclNo.count(ND) && \"RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5598, __PRETTY_FUNCTION__))
            "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl")((!BlockByRefDeclNo.count(ND) && "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl"
) ? static_cast<void> (0) : __assert_fail ("!BlockByRefDeclNo.count(ND) && \"RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5598, __PRETTY_FUNCTION__));
          BlockByRefDeclNo[ND] = uniqueByrefDeclCount++;
          RewriteByRefVar(VD, (DI == DS->decl_begin()), ((DI+1) == DE));
        }
        else
          RewriteTypeOfDecl(VD);
      }
    }
    if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(SD)) {
      if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
        RewriteBlockPointerDecl(TD);
      else if (TD->getUnderlyingType()->isFunctionPointerType())
        CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
    }
  }
}

if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S))
  RewriteObjCQualifiedInterfaceTypes(CE);

if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
    isa<DoStmt>(S) || isa<ForStmt>(S)) {
  assert(!Stmts.empty() && "Statement stack is empty")((!Stmts.empty() && "Statement stack is empty") ? static_cast
<void> (0) : __assert_fail ("!Stmts.empty() && \"Statement stack is empty\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5620, __PRETTY_FUNCTION__));
  assert ((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) ||(((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>
(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt
>(Stmts.back())) && "Statement stack mismatch") ? static_cast
<void> (0) : __assert_fail ("(isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back())) && \"Statement stack mismatch\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5623, __PRETTY_FUNCTION__))
           isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back()))(((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>
(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt
>(Stmts.back())) && "Statement stack mismatch") ? static_cast
<void> (0) : __assert_fail ("(isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back())) && \"Statement stack mismatch\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5623, __PRETTY_FUNCTION__))
          && "Statement stack mismatch")(((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>
(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt
>(Stmts.back())) && "Statement stack mismatch") ? static_cast
<void> (0) : __assert_fail ("(isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) || isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back())) && \"Statement stack mismatch\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 5623, __PRETTY_FUNCTION__));
  Stmts.pop_back();
}
// Handle blocks rewriting.
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
  ValueDecl *VD = DRE->getDecl();
  if (VD->hasAttr<BlocksAttr>())
    return RewriteBlockDeclRefExpr(DRE);
  if (HasLocalVariableExternalStorage(VD))
    return RewriteLocalVariableExternalStorage(DRE);
}

if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
  if (CE->getCallee()->getType()->isBlockPointerType()) {
    Stmt *BlockCall = SynthesizeBlockCall(CE, CE->getCallee());
    ReplaceStmt(S, BlockCall);
    return BlockCall;
  }
}
if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) {
  RewriteCastExpr(CE);
}
if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
  RewriteImplicitCastObjCExpr(ICE);
}
5648#if 0

if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
  CastExpr *Replacement = new (Context) CastExpr(ICE->getType(),
                                                 ICE->getSubExpr(),
                                                 SourceLocation());
  // Get the new text.
  std::string SStr;
  llvm::raw_string_ostream Buf(SStr);
  Replacement->printPretty(Buf);
  const std::string &Str = Buf.str();

  printf("CAST = %s\n", &Str[0]);
  InsertText(ICE->getSubExpr()->getBeginLoc(), Str);
  delete S;
  return Replacement;
}
5665#endif
// Return this stmt unmodified.
return S;
5668}

5670void RewriteModernObjC::RewriteRecordBody(RecordDecl *RD) {
for (auto *FD : RD->fields()) {
  if (isTopLevelBlockPointerType(FD->getType()))
    RewriteBlockPointerDecl(FD);
  if (FD->getType()->isObjCQualifiedIdType() ||
      FD->getType()->isObjCQualifiedInterfaceType())
    RewriteObjCQualifiedInterfaceTypes(FD);
}
5678}

5680/// HandleDeclInMainFile - This is called for each top-level decl defined in the
5681/// main file of the input.
5682void RewriteModernObjC::HandleDeclInMainFile(Decl *D) {
switch (D->getKind()) {
  case Decl::Function: {
    FunctionDecl *FD = cast<FunctionDecl>(D);
    if (FD->isOverloadedOperator())
      return;

    // Since function prototypes don't have ParmDecl's, we check the function
    // prototype. This enables us to rewrite function declarations and
    // definitions using the same code.
    RewriteBlocksInFunctionProtoType(FD->getType(), FD);

    if (!FD->isThisDeclarationADefinition())
      break;

    // FIXME: If this should support Obj-C++, support CXXTryStmt
    if (CompoundStmt *Body = dyn_cast_or_null<CompoundStmt>(FD->getBody())) {
      CurFunctionDef = FD;
      CurrentBody = Body;
      Body =
      cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
      FD->setBody(Body);
      CurrentBody = nullptr;
      if (PropParentMap) {
        delete PropParentMap;
        PropParentMap = nullptr;
      }
      // This synthesizes and inserts the block "impl" struct, invoke function,
      // and any copy/dispose helper functions.
      InsertBlockLiteralsWithinFunction(FD);
      RewriteLineDirective(D);
      CurFunctionDef = nullptr;
    }
    break;
  }
  case Decl::ObjCMethod: {
    ObjCMethodDecl *MD = cast<ObjCMethodDecl>(D);
    if (CompoundStmt *Body = MD->getCompoundBody()) {
      CurMethodDef = MD;
      CurrentBody = Body;
      Body =
        cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
      MD->setBody(Body);
      CurrentBody = nullptr;
      if (PropParentMap) {
        delete PropParentMap;
        PropParentMap = nullptr;
      }
      InsertBlockLiteralsWithinMethod(MD);
      RewriteLineDirective(D);
      CurMethodDef = nullptr;
    }
    break;
  }
  case Decl::ObjCImplementation: {
    ObjCImplementationDecl *CI = cast<ObjCImplementationDecl>(D);
    ClassImplementation.push_back(CI);
    break;
  }
  case Decl::ObjCCategoryImpl: {
    ObjCCategoryImplDecl *CI = cast<ObjCCategoryImplDecl>(D);
    CategoryImplementation.push_back(CI);
    break;
  }
  case Decl::Var: {
    VarDecl *VD = cast<VarDecl>(D);
    RewriteObjCQualifiedInterfaceTypes(VD);
    if (isTopLevelBlockPointerType(VD->getType()))
      RewriteBlockPointerDecl(VD);
    else if (VD->getType()->isFunctionPointerType()) {
      CheckFunctionPointerDecl(VD->getType(), VD);
      if (VD->getInit()) {
        if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
          RewriteCastExpr(CE);
        }
      }
    } else if (VD->getType()->isRecordType()) {
      RecordDecl *RD = VD->getType()->castAs<RecordType>()->getDecl();
      if (RD->isCompleteDefinition())
        RewriteRecordBody(RD);
    }
    if (VD->getInit()) {
      GlobalVarDecl = VD;
      CurrentBody = VD->getInit();
      RewriteFunctionBodyOrGlobalInitializer(VD->getInit());
      CurrentBody = nullptr;
      if (PropParentMap) {
        delete PropParentMap;
        PropParentMap = nullptr;
      }
      SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(), VD->getName());
      GlobalVarDecl = nullptr;

      // This is needed for blocks.
      if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
          RewriteCastExpr(CE);
      }
    }
    break;
  }
  case Decl::TypeAlias:
  case Decl::Typedef: {
    if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
      if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
        RewriteBlockPointerDecl(TD);
      else if (TD->getUnderlyingType()->isFunctionPointerType())
        CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
      else
        RewriteObjCQualifiedInterfaceTypes(TD);
    }
    break;
  }
  case Decl::CXXRecord:
  case Decl::Record: {
    RecordDecl *RD = cast<RecordDecl>(D);
    if (RD->isCompleteDefinition())
      RewriteRecordBody(RD);
    break;
  }
  default:
    break;
}
// Nothing yet.
5805}

5807/// Write_ProtocolExprReferencedMetadata - This routine writer out the
5808/// protocol reference symbols in the for of:
5809/// struct _protocol_t *PROTOCOL_REF = &PROTOCOL_METADATA.
5810static void Write_ProtocolExprReferencedMetadata(ASTContext *Context,
                                               ObjCProtocolDecl *PDecl,
                                               std::string &Result) {
// Also output .objc_protorefs$B section and its meta-data.
if (Context->getLangOpts().MicrosoftExt)
  Result += "static ";
Result += "struct _protocol_t *";
Result += "_OBJC_PROTOCOL_REFERENCE_$_";
Result += PDecl->getNameAsString();
Result += " = &";
Result += "_OBJC_PROTOCOL_"; Result += PDecl->getNameAsString();
Result += ";\n";
5822}

5824void RewriteModernObjC::HandleTranslationUnit(ASTContext &C) {
if (Diags.hasErrorOccurred())
  return;

RewriteInclude();

for (unsigned i = 0, e = FunctionDefinitionsSeen.size(); i < e; i++) {
  // translation of function bodies were postponed until all class and
  // their extensions and implementations are seen. This is because, we
  // cannot build grouping structs for bitfields until they are all seen.
  FunctionDecl *FDecl = FunctionDefinitionsSeen[i];
  HandleTopLevelSingleDecl(FDecl);
}

// Here's a great place to add any extra declarations that may be needed.
// Write out meta data for each @protocol(<expr>).
for (ObjCProtocolDecl *ProtDecl : ProtocolExprDecls) {
  RewriteObjCProtocolMetaData(ProtDecl, Preamble);
  Write_ProtocolExprReferencedMetadata(Context, ProtDecl, Preamble);
}

InsertText(SM->getLocForStartOfFile(MainFileID), Preamble, false);

if (ClassImplementation.size() || CategoryImplementation.size())
  RewriteImplementations();

for (unsigned i = 0, e = ObjCInterfacesSeen.size(); i < e; i++) {
  ObjCInterfaceDecl *CDecl = ObjCInterfacesSeen[i];
  // Write struct declaration for the class matching its ivar declarations.
  // Note that for modern abi, this is postponed until the end of TU
  // because class extensions and the implementation might declare their own
  // private ivars.
  RewriteInterfaceDecl(CDecl);
}

// Get the buffer corresponding to MainFileID.  If we haven't changed it, then
// we are done.
if (const RewriteBuffer *RewriteBuf =
    Rewrite.getRewriteBufferFor(MainFileID)) {
  //printf("Changed:\n");
  *OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end());
} else {
  llvm::errs() << "No changes\n";
}

if (ClassImplementation.size() || CategoryImplementation.size() ||
    ProtocolExprDecls.size()) {
  // Rewrite Objective-c meta data*
  std::string ResultStr;
  RewriteMetaDataIntoBuffer(ResultStr);
  // Emit metadata.
  *OutFile << ResultStr;
}
// Emit ImageInfo;
{
  std::string ResultStr;
  WriteImageInfo(ResultStr);
  *OutFile << ResultStr;
}
OutFile->flush();
5884}

5886void RewriteModernObjC::Initialize(ASTContext &context) {
InitializeCommon(context);

Preamble += "#ifndef __OBJC2__\n";
Preamble += "#define __OBJC2__\n";
Preamble += "#endif\n";

// declaring objc_selector outside the parameter list removes a silly
// scope related warning...
if (IsHeader)
  Preamble = "#pragma once\n";
Preamble += "struct objc_selector; struct objc_class;\n";
Preamble += "struct __rw_objc_super { \n\tstruct objc_object *object; ";
Preamble += "\n\tstruct objc_object *superClass; ";
// Add a constructor for creating temporary objects.
Preamble += "\n\t__rw_objc_super(struct objc_object *o, struct objc_object *s) ";
Preamble += ": object(o), superClass(s) {} ";
Preamble += "\n};\n";

if (LangOpts.MicrosoftExt) {
  // Define all sections using syntax that makes sense.
  // These are currently generated.
  Preamble += "\n#pragma section(\".objc_classlist$B\", long, read, write)\n";
  Preamble += "#pragma section(\".objc_catlist$B\", long, read, write)\n";
  Preamble += "#pragma section(\".objc_imageinfo$B\", long, read, write)\n";
  Preamble += "#pragma section(\".objc_nlclslist$B\", long, read, write)\n";
  Preamble += "#pragma section(\".objc_nlcatlist$B\", long, read, write)\n";
  // These are generated but not necessary for functionality.
  Preamble += "#pragma section(\".cat_cls_meth$B\", long, read, write)\n";
  Preamble += "#pragma section(\".inst_meth$B\", long, read, write)\n";
  Preamble += "#pragma section(\".cls_meth$B\", long, read, write)\n";
  Preamble += "#pragma section(\".objc_ivar$B\", long, read, write)\n";

  // These need be generated for performance. Currently they are not,
  // using API calls instead.
  Preamble += "#pragma section(\".objc_selrefs$B\", long, read, write)\n";
  Preamble += "#pragma section(\".objc_classrefs$B\", long, read, write)\n";
  Preamble += "#pragma section(\".objc_superrefs$B\", long, read, write)\n";

}
Preamble += "#ifndef _REWRITER_typedef_Protocol\n";
Preamble += "typedef struct objc_object Protocol;\n";
Preamble += "#define _REWRITER_typedef_Protocol\n";
Preamble += "#endif\n";
if (LangOpts.MicrosoftExt) {
  Preamble += "#define __OBJC_RW_DLLIMPORT extern \"C\" __declspec(dllimport)\n";
  Preamble += "#define __OBJC_RW_STATICIMPORT extern \"C\"\n";
}
else
  Preamble += "#define __OBJC_RW_DLLIMPORT extern\n";

Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend(void);\n";
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSendSuper(void);\n";
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend_stret(void);\n";
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSendSuper_stret(void);\n";
Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend_fpret(void);\n";

Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *objc_getClass";
Preamble += "(const char *);\n";
Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *class_getSuperclass";
Preamble += "(struct objc_class *);\n";
Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *objc_getMetaClass";
Preamble += "(const char *);\n";
Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw( struct objc_object *);\n";
// @synchronized hooks.
Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_enter( struct objc_object *);\n";
Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_exit( struct objc_object *);\n";
Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\n";
Preamble += "#ifdef _WIN64\n";
Preamble += "typedef unsigned long long  _WIN_NSUInteger;\n";
Preamble += "#else\n";
Preamble += "typedef unsigned int _WIN_NSUInteger;\n";
Preamble += "#endif\n";
Preamble += "#ifndef __FASTENUMERATIONSTATE\n";
Preamble += "struct __objcFastEnumerationState {\n\t";
Preamble += "unsigned long state;\n\t";
Preamble += "void **itemsPtr;\n\t";
Preamble += "unsigned long *mutationsPtr;\n\t";
Preamble += "unsigned long extra[5];\n};\n";
Preamble += "__OBJC_RW_DLLIMPORT void objc_enumerationMutation(struct objc_object *);\n";
Preamble += "#define __FASTENUMERATIONSTATE\n";
Preamble += "#endif\n";
Preamble += "#ifndef __NSCONSTANTSTRINGIMPL\n";
Preamble += "struct __NSConstantStringImpl {\n";
Preamble += "  int *isa;\n";
Preamble += "  int flags;\n";
Preamble += "  char *str;\n";
Preamble += "#if _WIN64\n";
Preamble += "  long long length;\n";
Preamble += "#else\n";
Preamble += "  long length;\n";
Preamble += "#endif\n";
Preamble += "};\n";
Preamble += "#ifdef CF_EXPORT_CONSTANT_STRING\n";
Preamble += "extern \"C\" __declspec(dllexport) int __CFConstantStringClassReference[];\n";
Preamble += "#else\n";
Preamble += "__OBJC_RW_DLLIMPORT int __CFConstantStringClassReference[];\n";
Preamble += "#endif\n";
Preamble += "#define __NSCONSTANTSTRINGIMPL\n";
Preamble += "#endif\n";
// Blocks preamble.
Preamble += "#ifndef BLOCK_IMPL\n";
Preamble += "#define BLOCK_IMPL\n";
Preamble += "struct __block_impl {\n";
Preamble += "  void *isa;\n";
Preamble += "  int Flags;\n";
Preamble += "  int Reserved;\n";
Preamble += "  void *FuncPtr;\n";
Preamble += "};\n";
Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n";
Preamble += "#ifdef __OBJC_EXPORT_BLOCKS\n";
Preamble += "extern \"C\" __declspec(dllexport) "
"void _Block_object_assign(void *, const void *, const int);\n";
Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_dispose(const void *, const int);\n";
Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteGlobalBlock[32];\n";
Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteStackBlock[32];\n";
Preamble += "#else\n";
Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_assign(void *, const void *, const int);\n";
Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_dispose(const void *, const int);\n";
Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteGlobalBlock[32];\n";
Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteStackBlock[32];\n";
Preamble += "#endif\n";
Preamble += "#endif\n";
if (LangOpts.MicrosoftExt) {
  Preamble += "#undef __OBJC_RW_DLLIMPORT\n";
  Preamble += "#undef __OBJC_RW_STATICIMPORT\n";
  Preamble += "#ifndef KEEP_ATTRIBUTES\n";  // We use this for clang tests.
  Preamble += "#define __attribute__(X)\n";
  Preamble += "#endif\n";
  Preamble += "#ifndef __weak\n";
  Preamble += "#define __weak\n";
  Preamble += "#endif\n";
  Preamble += "#ifndef __block\n";
  Preamble += "#define __block\n";
  Preamble += "#endif\n";
}
else {
  Preamble += "#define __block\n";
  Preamble += "#define __weak\n";
}

// Declarations required for modern objective-c array and dictionary literals.
Preamble += "\n#include <stdarg.h>\n";
Preamble += "struct __NSContainer_literal {\n";
Preamble += "  void * *arr;\n";
Preamble += "  __NSContainer_literal (unsigned int count, ...) {\n";
Preamble += "\tva_list marker;\n";
Preamble += "\tva_start(marker, count);\n";
Preamble += "\tarr = new void *[count];\n";
Preamble += "\tfor (unsigned i = 0; i < count; i++)\n";
Preamble += "\t  arr[i] = va_arg(marker, void *);\n";
Preamble += "\tva_end( marker );\n";
Preamble += "  };\n";
Preamble += "  ~__NSContainer_literal() {\n";
Preamble += "\tdelete[] arr;\n";
Preamble += "  }\n";
Preamble += "};\n";

// Declaration required for implementation of @autoreleasepool statement.
Preamble += "extern \"C\" __declspec(dllimport) void * objc_autoreleasePoolPush(void);\n";
Preamble += "extern \"C\" __declspec(dllimport) void objc_autoreleasePoolPop(void *);\n\n";
Preamble += "struct __AtAutoreleasePool {\n";
Preamble += "  __AtAutoreleasePool() {atautoreleasepoolobj = objc_autoreleasePoolPush();}\n";
Preamble += "  ~__AtAutoreleasePool() {objc_autoreleasePoolPop(atautoreleasepoolobj);}\n";
Preamble += "  void * atautoreleasepoolobj;\n";
Preamble += "};\n";

// NOTE! Windows uses LLP64 for 64bit mode. So, cast pointer to long long
// as this avoids warning in any 64bit/32bit compilation model.
Preamble += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long long) &((TYPE *)0)->MEMBER)\n";
6056}

6058/// RewriteIvarOffsetComputation - This routine synthesizes computation of
6059/// ivar offset.
6060void RewriteModernObjC::RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
                                                       std::string &Result) {
Result += "__OFFSETOFIVAR__(struct ";
Result += ivar->getContainingInterface()->getNameAsString();
if (LangOpts.MicrosoftExt)
  Result += "_IMPL";
Result += ", ";
if (ivar->isBitField())
  ObjCIvarBitfieldGroupDecl(ivar, Result);
else
  Result += ivar->getNameAsString();
Result += ")";
6072}

6074/// WriteModernMetadataDeclarations - Writes out metadata declarations for modern ABI.
6075/// struct _prop_t {
6076///   const char *name;
6077///   char *attributes;
6078/// }

6080/// struct _prop_list_t {
6081///   uint32_t entsize;      // sizeof(struct _prop_t)
6082///   uint32_t count_of_properties;
6083///   struct _prop_t prop_list[count_of_properties];
6084/// }

6086/// struct _protocol_t;

6088/// struct _protocol_list_t {
6089///   long protocol_count;   // Note, this is 32/64 bit
6090///   struct _protocol_t * protocol_list[protocol_count];
6091/// }

6093/// struct _objc_method {
6094///   SEL _cmd;
6095///   const char *method_type;
6096///   char *_imp;
6097/// }

6099/// struct _method_list_t {
6100///   uint32_t entsize;  // sizeof(struct _objc_method)
6101///   uint32_t method_count;
6102///   struct _objc_method method_list[method_count];
6103/// }

6105/// struct _protocol_t {
6106///   id isa;  // NULL
6107///   const char *protocol_name;
6108///   const struct _protocol_list_t * protocol_list; // super protocols
6109///   const struct method_list_t *instance_methods;
6110///   const struct method_list_t *class_methods;
6111///   const struct method_list_t *optionalInstanceMethods;
6112///   const struct method_list_t *optionalClassMethods;
6113///   const struct _prop_list_t * properties;
6114///   const uint32_t size;  // sizeof(struct _protocol_t)
6115///   const uint32_t flags;  // = 0
6116///   const char ** extendedMethodTypes;
6117/// }

6119/// struct _ivar_t {
6120///   unsigned long int *offset;  // pointer to ivar offset location
6121///   const char *name;
6122///   const char *type;
6123///   uint32_t alignment;
6124///   uint32_t size;
6125/// }

6127/// struct _ivar_list_t {
6128///   uint32 entsize;  // sizeof(struct _ivar_t)
6129///   uint32 count;
6130///   struct _ivar_t list[count];
6131/// }

6133/// struct _class_ro_t {
6134///   uint32_t flags;
6135///   uint32_t instanceStart;
6136///   uint32_t instanceSize;
6137///   uint32_t reserved;  // only when building for 64bit targets
6138///   const uint8_t *ivarLayout;
6139///   const char *name;
6140///   const struct _method_list_t *baseMethods;
6141///   const struct _protocol_list_t *baseProtocols;
6142///   const struct _ivar_list_t *ivars;
6143///   const uint8_t *weakIvarLayout;
6144///   const struct _prop_list_t *properties;
6145/// }

6147/// struct _class_t {
6148///   struct _class_t *isa;
6149///   struct _class_t *superclass;
6150///   void *cache;
6151///   IMP *vtable;
6152///   struct _class_ro_t *ro;
6153/// }

6155/// struct _category_t {
6156///   const char *name;
6157///   struct _class_t *cls;
6158///   const struct _method_list_t *instance_methods;
6159///   const struct _method_list_t *class_methods;
6160///   const struct _protocol_list_t *protocols;
6161///   const struct _prop_list_t *properties;
6162/// }

6164/// MessageRefTy - LLVM for:
6165/// struct _message_ref_t {
6166///   IMP messenger;
6167///   SEL name;
6168/// };

6170/// SuperMessageRefTy - LLVM for:
6171/// struct _super_message_ref_t {
6172///   SUPER_IMP messenger;
6173///   SEL name;
6174/// };

6176static void WriteModernMetadataDeclarations(ASTContext *Context, std::string &Result) {
static bool meta_data_declared = false;
if (meta_data_declared)
  return;

Result += "\nstruct _prop_t {\n";
Result += "\tconst char *name;\n";
Result += "\tconst char *attributes;\n";
Result += "};\n";

Result += "\nstruct _protocol_t;\n";

Result += "\nstruct _objc_method {\n";
Result += "\tstruct objc_selector * _cmd;\n";
Result += "\tconst char *method_type;\n";
Result += "\tvoid  *_imp;\n";
Result += "};\n";

Result += "\nstruct _protocol_t {\n";
Result += "\tvoid * isa;  // NULL\n";
Result += "\tconst char *protocol_name;\n";
Result += "\tconst struct _protocol_list_t * protocol_list; // super protocols\n";
Result += "\tconst struct method_list_t *instance_methods;\n";
Result += "\tconst struct method_list_t *class_methods;\n";
Result += "\tconst struct method_list_t *optionalInstanceMethods;\n";
Result += "\tconst struct method_list_t *optionalClassMethods;\n";
Result += "\tconst struct _prop_list_t * properties;\n";
Result += "\tconst unsigned int size;  // sizeof(struct _protocol_t)\n";
Result += "\tconst unsigned int flags;  // = 0\n";
Result += "\tconst char ** extendedMethodTypes;\n";
Result += "};\n";

Result += "\nstruct _ivar_t {\n";
Result += "\tunsigned long int *offset;  // pointer to ivar offset location\n";
Result += "\tconst char *name;\n";
Result += "\tconst char *type;\n";
Result += "\tunsigned int alignment;\n";
Result += "\tunsigned int  size;\n";
Result += "};\n";

Result += "\nstruct _class_ro_t {\n";
Result += "\tunsigned int flags;\n";
Result += "\tunsigned int instanceStart;\n";
Result += "\tunsigned int instanceSize;\n";
const llvm::Triple &Triple(Context->getTargetInfo().getTriple());
if (Triple.getArch() == llvm::Triple::x86_64)
  Result += "\tunsigned int reserved;\n";
Result += "\tconst unsigned char *ivarLayout;\n";
Result += "\tconst char *name;\n";
Result += "\tconst struct _method_list_t *baseMethods;\n";
Result += "\tconst struct _objc_protocol_list *baseProtocols;\n";
Result += "\tconst struct _ivar_list_t *ivars;\n";
Result += "\tconst unsigned char *weakIvarLayout;\n";
Result += "\tconst struct _prop_list_t *properties;\n";
Result += "};\n";

Result += "\nstruct _class_t {\n";
Result += "\tstruct _class_t *isa;\n";
Result += "\tstruct _class_t *superclass;\n";
Result += "\tvoid *cache;\n";
Result += "\tvoid *vtable;\n";
Result += "\tstruct _class_ro_t *ro;\n";
Result += "};\n";

Result += "\nstruct _category_t {\n";
Result += "\tconst char *name;\n";
Result += "\tstruct _class_t *cls;\n";
Result += "\tconst struct _method_list_t *instance_methods;\n";
Result += "\tconst struct _method_list_t *class_methods;\n";
Result += "\tconst struct _protocol_list_t *protocols;\n";
Result += "\tconst struct _prop_list_t *properties;\n";
Result += "};\n";

Result += "extern \"C\" __declspec(dllimport) struct objc_cache _objc_empty_cache;\n";
Result += "#pragma warning(disable:4273)\n";
meta_data_declared = true;
6252}

6254static void Write_protocol_list_t_TypeDecl(std::string &Result,
                                         long super_protocol_count) {
Result += "struct /*_protocol_list_t*/"; Result += " {\n";
Result += "\tlong protocol_count;  // Note, this is 32/64 bit\n";
Result += "\tstruct _protocol_t *super_protocols[";
Result += utostr(super_protocol_count); Result += "];\n";
Result += "}";
6261}

6263static void Write_method_list_t_TypeDecl(std::string &Result,
                                       unsigned int method_count) {
Result += "struct /*_method_list_t*/"; Result += " {\n";
Result += "\tunsigned int entsize;  // sizeof(struct _objc_method)\n";
Result += "\tunsigned int method_count;\n";
Result += "\tstruct _objc_method method_list[";
Result += utostr(method_count); Result += "];\n";
Result += "}";
6271}

6273static void Write__prop_list_t_TypeDecl(std::string &Result,
                                      unsigned int property_count) {
Result += "struct /*_prop_list_t*/"; Result += " {\n";
Result += "\tunsigned int entsize;  // sizeof(struct _prop_t)\n";
Result += "\tunsigned int count_of_properties;\n";
Result += "\tstruct _prop_t prop_list[";
Result += utostr(property_count); Result += "];\n";
Result += "}";
6281}

6283static void Write__ivar_list_t_TypeDecl(std::string &Result,
                                      unsigned int ivar_count) {
Result += "struct /*_ivar_list_t*/"; Result += " {\n";
Result += "\tunsigned int entsize;  // sizeof(struct _prop_t)\n";
Result += "\tunsigned int count;\n";
Result += "\tstruct _ivar_t ivar_list[";
Result += utostr(ivar_count); Result += "];\n";
Result += "}";
6291}

6293static void Write_protocol_list_initializer(ASTContext *Context, std::string &Result,
                                          ArrayRef<ObjCProtocolDecl *> SuperProtocols,
                                          StringRef VarName,
                                          StringRef ProtocolName) {
if (SuperProtocols.size() > 0) {
  Result += "\nstatic ";
  Write_protocol_list_t_TypeDecl(Result, SuperProtocols.size());
  Result += " "; Result += VarName;
  Result += ProtocolName;
  Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
  Result += "\t"; Result += utostr(SuperProtocols.size()); Result += ",\n";
  for (unsigned i = 0, e = SuperProtocols.size(); i < e; i++) {
    ObjCProtocolDecl *SuperPD = SuperProtocols[i];
    Result += "\t&"; Result += "_OBJC_PROTOCOL_";
    Result += SuperPD->getNameAsString();
    if (i == e-1)
      Result += "\n};\n";
    else
      Result += ",\n";
  }
}
6314}

6316static void Write_method_list_t_initializer(RewriteModernObjC &RewriteObj,
                                          ASTContext *Context, std::string &Result,
                                          ArrayRef<ObjCMethodDecl *> Methods,
                                          StringRef VarName,
                                          StringRef TopLevelDeclName,
                                          bool MethodImpl) {
if (Methods.size() > 0) {
  Result += "\nstatic ";
  Write_method_list_t_TypeDecl(Result, Methods.size());
  Result += " "; Result += VarName;
  Result += TopLevelDeclName;
  Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
  Result += "\t"; Result += "sizeof(_objc_method)"; Result += ",\n";
  Result += "\t"; Result += utostr(Methods.size()); Result += ",\n";
  for (unsigned i = 0, e = Methods.size(); i < e; i++) {
    ObjCMethodDecl *MD = Methods[i];
    if (i == 0)
      Result += "\t{{(struct objc_selector *)\"";
    else
      Result += "\t{(struct objc_selector *)\"";
    Result += (MD)->getSelector().getAsString(); Result += "\"";
    Result += ", ";
    std::string MethodTypeString = Context->getObjCEncodingForMethodDecl(MD);
    Result += "\""; Result += MethodTypeString; Result += "\"";
    Result += ", ";
    if (!MethodImpl)
      Result += "0";
    else {
      Result += "(void *)";
      Result += RewriteObj.MethodInternalNames[MD];
    }
    if (i  == e-1)
      Result += "}}\n";
    else
      Result += "},\n";
  }
  Result += "};\n";
}
6354}

6356static void Write_prop_list_t_initializer(RewriteModernObjC &RewriteObj,
                                         ASTContext *Context, std::string &Result,
                                         ArrayRef<ObjCPropertyDecl *> Properties,
                                         const Decl *Container,
                                         StringRef VarName,
                                         StringRef ProtocolName) {
if (Properties.size() > 0) {
  Result += "\nstatic ";
  Write__prop_list_t_TypeDecl(Result, Properties.size());
  Result += " "; Result += VarName;
  Result += ProtocolName;
  Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
  Result += "\t"; Result += "sizeof(_prop_t)"; Result += ",\n";
  Result += "\t"; Result += utostr(Properties.size()); Result += ",\n";
  for (unsigned i = 0, e = Properties.size(); i < e; i++) {
    ObjCPropertyDecl *PropDecl = Properties[i];
    if (i == 0)
      Result += "\t{{\"";
    else
      Result += "\t{\"";
    Result += PropDecl->getName(); Result += "\",";
    std::string PropertyTypeString =
      Context->getObjCEncodingForPropertyDecl(PropDecl, Container);
    std::string QuotePropertyTypeString;
    RewriteObj.QuoteDoublequotes(PropertyTypeString, QuotePropertyTypeString);
    Result += "\""; Result += QuotePropertyTypeString; Result += "\"";
    if (i  == e-1)
      Result += "}}\n";
    else
      Result += "},\n";
  }
  Result += "};\n";
}
6389}

6391// Metadata flags
6392enum MetaDataDlags {
CLS = 0x0,
CLS_META = 0x1,
CLS_ROOT = 0x2,
OBJC2_CLS_HIDDEN = 0x10,
CLS_EXCEPTION = 0x20,

/// (Obsolete) ARC-specific: this class has a .release_ivars method
CLS_HAS_IVAR_RELEASER = 0x40,
/// class was compiled with -fobjc-arr
CLS_COMPILED_BY_ARC = 0x80  // (1<<7)
6403};

6405static void Write__class_ro_t_initializer(ASTContext *Context, std::string &Result,
                                        unsigned int flags,
                                        const std::string &InstanceStart,
                                        const std::string &InstanceSize,
                                        ArrayRef<ObjCMethodDecl *>baseMethods,
                                        ArrayRef<ObjCProtocolDecl *>baseProtocols,
                                        ArrayRef<ObjCIvarDecl *>ivars,
                                        ArrayRef<ObjCPropertyDecl *>Properties,
                                        StringRef VarName,
                                        StringRef ClassName) {
Result += "\nstatic struct _class_ro_t ";
Result += VarName; Result += ClassName;
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
Result += "\t";
Result += llvm::utostr(flags); Result += ", ";
Result += InstanceStart; Result += ", ";
Result += InstanceSize; Result += ", \n";
Result += "\t";
const llvm::Triple &Triple(Context->getTargetInfo().getTriple());
if (Triple.getArch() == llvm::Triple::x86_64)
  // uint32_t const reserved; // only when building for 64bit targets
  Result += "(unsigned int)0, \n\t";
// const uint8_t * const ivarLayout;
Result += "0, \n\t";
Result += "\""; Result += ClassName; Result += "\",\n\t";
bool metaclass = ((flags & CLS_META) != 0);
if (baseMethods.size() > 0) {
  Result += "(const struct _method_list_t *)&";
  if (metaclass)
    Result += "_OBJC_$_CLASS_METHODS_";
  else
    Result += "_OBJC_$_INSTANCE_METHODS_";
  Result += ClassName;
  Result += ",\n\t";
}
else
  Result += "0, \n\t";

if (!metaclass && baseProtocols.size() > 0) {
  Result += "(const struct _objc_protocol_list *)&";
  Result += "_OBJC_CLASS_PROTOCOLS_$_"; Result += ClassName;
  Result += ",\n\t";
}
else
  Result += "0, \n\t";

if (!metaclass && ivars.size() > 0) {
  Result += "(const struct _ivar_list_t *)&";
  Result += "_OBJC_$_INSTANCE_VARIABLES_"; Result += ClassName;
  Result += ",\n\t";
}
else
  Result += "0, \n\t";

// weakIvarLayout
Result += "0, \n\t";
if (!metaclass && Properties.size() > 0) {
  Result += "(const struct _prop_list_t *)&";
  Result += "_OBJC_$_PROP_LIST_"; Result += ClassName;
  Result += ",\n";
}
else
  Result += "0, \n";

Result += "};\n";
6470}

6472static void Write_class_t(ASTContext *Context, std::string &Result,
                        StringRef VarName,
                        const ObjCInterfaceDecl *CDecl, bool metaclass) {
bool rootClass = (!CDecl->getSuperClass());
const ObjCInterfaceDecl *RootClass = CDecl;

if (!rootClass) {
  // Find the Root class
  RootClass = CDecl->getSuperClass();
  while (RootClass->getSuperClass()) {
    RootClass = RootClass->getSuperClass();
  }
}

if (metaclass && rootClass) {
  // Need to handle a case of use of forward declaration.
  Result += "\n";
  Result += "extern \"C\" ";
  if (CDecl->getImplementation())
    Result += "__declspec(dllexport) ";
  else
    Result += "__declspec(dllimport) ";

  Result += "struct _class_t OBJC_CLASS_$_";
  Result += CDecl->getNameAsString();
  Result += ";\n";
}
// Also, for possibility of 'super' metadata class not having been defined yet.
if (!rootClass) {
  ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass();
  Result += "\n";
  Result += "extern \"C\" ";
  if (SuperClass->getImplementation())
    Result += "__declspec(dllexport) ";
  else
    Result += "__declspec(dllimport) ";

  Result += "struct _class_t ";
  Result += VarName;
  Result += SuperClass->getNameAsString();
  Result += ";\n";

  if (metaclass && RootClass != SuperClass) {
    Result += "extern \"C\" ";
    if (RootClass->getImplementation())
      Result += "__declspec(dllexport) ";
    else
      Result += "__declspec(dllimport) ";

    Result += "struct _class_t ";
    Result += VarName;
    Result += RootClass->getNameAsString();
    Result += ";\n";
  }
}

Result += "\nextern \"C\" __declspec(dllexport) struct _class_t ";
Result += VarName; Result += CDecl->getNameAsString();
Result += " __attribute__ ((used, section (\"__DATA,__objc_data\"))) = {\n";
Result += "\t";
if (metaclass) {
  if (!rootClass) {
    Result += "0, // &"; Result += VarName;
    Result += RootClass->getNameAsString();
    Result += ",\n\t";
    Result += "0, // &"; Result += VarName;
    Result += CDecl->getSuperClass()->getNameAsString();
    Result += ",\n\t";
  }
  else {
    Result += "0, // &"; Result += VarName;
    Result += CDecl->getNameAsString();
    Result += ",\n\t";
    Result += "0, // &OBJC_CLASS_$_"; Result += CDecl->getNameAsString();
    Result += ",\n\t";
  }
}
else {
  Result += "0, // &OBJC_METACLASS_$_";
  Result += CDecl->getNameAsString();
  Result += ",\n\t";
  if (!rootClass) {
    Result += "0, // &"; Result += VarName;
    Result += CDecl->getSuperClass()->getNameAsString();
    Result += ",\n\t";
  }
  else
    Result += "0,\n\t";
}
Result += "0, // (void *)&_objc_empty_cache,\n\t";
Result += "0, // unused, was (void *)&_objc_empty_vtable,\n\t";
if (metaclass)
  Result += "&_OBJC_METACLASS_RO_$_";
else
  Result += "&_OBJC_CLASS_RO_$_";
Result += CDecl->getNameAsString();
Result += ",\n};\n";

// Add static function to initialize some of the meta-data fields.
// avoid doing it twice.
if (metaclass)
  return;

const ObjCInterfaceDecl *SuperClass =
  rootClass ? CDecl : CDecl->getSuperClass();

Result += "static void OBJC_CLASS_SETUP_$_";
Result += CDecl->getNameAsString();
Result += "(void ) {\n";
Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
Result += ".isa = "; Result += "&OBJC_METACLASS_$_";
Result += RootClass->getNameAsString(); Result += ";\n";

Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
Result += ".superclass = ";
if (rootClass)
  Result += "&OBJC_CLASS_$_";
else
   Result += "&OBJC_METACLASS_$_";

Result += SuperClass->getNameAsString(); Result += ";\n";

Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
Result += ".cache = "; Result += "&_objc_empty_cache"; Result += ";\n";

Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
Result += ".isa = "; Result += "&OBJC_METACLASS_$_";
Result += CDecl->getNameAsString(); Result += ";\n";

if (!rootClass) {
  Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
  Result += ".superclass = "; Result += "&OBJC_CLASS_$_";
  Result += SuperClass->getNameAsString(); Result += ";\n";
}

Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
Result += ".cache = "; Result += "&_objc_empty_cache"; Result += ";\n";
Result += "}\n";
6610}

6612static void Write_category_t(RewriteModernObjC &RewriteObj, ASTContext *Context,
                           std::string &Result,
                           ObjCCategoryDecl *CatDecl,
                           ObjCInterfaceDecl *ClassDecl,
                           ArrayRef<ObjCMethodDecl *> InstanceMethods,
                           ArrayRef<ObjCMethodDecl *> ClassMethods,
                           ArrayRef<ObjCProtocolDecl *> RefedProtocols,
                           ArrayRef<ObjCPropertyDecl *> ClassProperties) {
StringRef CatName = CatDecl->getName();
StringRef ClassName = ClassDecl->getName();
// must declare an extern class object in case this class is not implemented
// in this TU.
Result += "\n";
Result += "extern \"C\" ";
if (ClassDecl->getImplementation())
  Result += "__declspec(dllexport) ";
else
  Result += "__declspec(dllimport) ";

Result += "struct _class_t ";
Result += "OBJC_CLASS_$_"; Result += ClassName;
Result += ";\n";

Result += "\nstatic struct _category_t ";
Result += "_OBJC_$_CATEGORY_";
Result += ClassName; Result += "_$_"; Result += CatName;
Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = \n";
Result += "{\n";
Result += "\t\""; Result += ClassName; Result += "\",\n";
Result += "\t0, // &"; Result += "OBJC_CLASS_$_"; Result += ClassName;
Result += ",\n";
if (InstanceMethods.size() > 0) {
  Result += "\t(const struct _method_list_t *)&";
  Result += "_OBJC_$_CATEGORY_INSTANCE_METHODS_";
  Result += ClassName; Result += "_$_"; Result += CatName;
  Result += ",\n";
}
else
  Result += "\t0,\n";

if (ClassMethods.size() > 0) {
  Result += "\t(const struct _method_list_t *)&";
  Result += "_OBJC_$_CATEGORY_CLASS_METHODS_";
  Result += ClassName; Result += "_$_"; Result += CatName;
  Result += ",\n";
}
else
  Result += "\t0,\n";

if (RefedProtocols.size() > 0) {
  Result += "\t(const struct _protocol_list_t *)&";
  Result += "_OBJC_CATEGORY_PROTOCOLS_$_";
  Result += ClassName; Result += "_$_"; Result += CatName;
  Result += ",\n";
}
else
  Result += "\t0,\n";

if (ClassProperties.size() > 0) {
  Result += "\t(const struct _prop_list_t *)&";  Result += "_OBJC_$_PROP_LIST_";
  Result += ClassName; Result += "_$_"; Result += CatName;
  Result += ",\n";
}
else
  Result += "\t0,\n";

Result += "};\n";

// Add static function to initialize the class pointer in the category structure.
Result += "static void OBJC_CATEGORY_SETUP_$_";
Result += ClassDecl->getNameAsString();
Result += "_$_";
Result += CatName;
Result += "(void ) {\n";
Result += "\t_OBJC_$_CATEGORY_";
Result += ClassDecl->getNameAsString();
Result += "_$_";
Result += CatName;
Result += ".cls = "; Result += "&OBJC_CLASS_$_"; Result += ClassName;
Result += ";\n}\n";
6692}

6694static void Write__extendedMethodTypes_initializer(RewriteModernObjC &RewriteObj,
                                         ASTContext *Context, std::string &Result,
                                         ArrayRef<ObjCMethodDecl *> Methods,
                                         StringRef VarName,
                                         StringRef ProtocolName) {
if (Methods.size() == 0)
  return;

Result += "\nstatic const char *";
Result += VarName; Result += ProtocolName;
Result += " [] __attribute__ ((used, section (\"__DATA,__objc_const\"))) = \n";
Result += "{\n";
for (unsigned i = 0, e = Methods.size(); i < e; i++) {
  ObjCMethodDecl *MD = Methods[i];
  std::string MethodTypeString =
    Context->getObjCEncodingForMethodDecl(MD, true);
  std::string QuoteMethodTypeString;
  RewriteObj.QuoteDoublequotes(MethodTypeString, QuoteMethodTypeString);
  Result += "\t\""; Result += QuoteMethodTypeString; Result += "\"";
  if (i == e-1)
    Result += "\n};\n";
  else {
    Result += ",\n";
  }
}
6719}

6721static void Write_IvarOffsetVar(RewriteModernObjC &RewriteObj,
                              ASTContext *Context,
                              std::string &Result,
                              ArrayRef<ObjCIvarDecl *> Ivars,
                              ObjCInterfaceDecl *CDecl) {
// FIXME. visibilty of offset symbols may have to be set; for Darwin
// this is what happens:
/**
 if (Ivar->getAccessControl() == ObjCIvarDecl::Private ||
     Ivar->getAccessControl() == ObjCIvarDecl::Package ||
     Class->getVisibility() == HiddenVisibility)
   Visibility should be: HiddenVisibility;
 else
   Visibility should be: DefaultVisibility;
*/

Result += "\n";
for (unsigned i =0, e = Ivars.size(); i < e; i++) {
  ObjCIvarDecl *IvarDecl = Ivars[i];
  if (Context->getLangOpts().MicrosoftExt)
    Result += "__declspec(allocate(\".objc_ivar$B\")) ";

  if (!Context->getLangOpts().MicrosoftExt ||
      IvarDecl->getAccessControl() == ObjCIvarDecl::Private ||
      IvarDecl->getAccessControl() == ObjCIvarDecl::Package)
    Result += "extern \"C\" unsigned long int ";
  else
    Result += "extern \"C\" __declspec(dllexport) unsigned long int ";
  if (Ivars[i]->isBitField())
    RewriteObj.ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
  else
    WriteInternalIvarName(CDecl, IvarDecl, Result);
  Result += " __attribute__ ((used, section (\"__DATA,__objc_ivar\")))";
  Result += " = ";
  RewriteObj.RewriteIvarOffsetComputation(IvarDecl, Result);
  Result += ";\n";
  if (Ivars[i]->isBitField()) {
    // skip over rest of the ivar bitfields.
    SKIP_BITFIELDS(i , e, Ivars){ while ((i < e) && Ivars[i]->isBitField()) ++i
; if (i < e) --i; };
  }
}
6762}

6764static void Write__ivar_list_t_initializer(RewriteModernObjC &RewriteObj,
                                         ASTContext *Context, std::string &Result,
                                         ArrayRef<ObjCIvarDecl *> OriginalIvars,
                                         StringRef VarName,
                                         ObjCInterfaceDecl *CDecl) {
if (OriginalIvars.size() > 0) {
  Write_IvarOffsetVar(RewriteObj, Context, Result, OriginalIvars, CDecl);
  SmallVector<ObjCIvarDecl *, 8> Ivars;
  // strip off all but the first ivar bitfield from each group of ivars.
  // Such ivars in the ivar list table will be replaced by their grouping struct
  // 'ivar'.
  for (unsigned i = 0, e = OriginalIvars.size(); i < e; i++) {
    if (OriginalIvars[i]->isBitField()) {
      Ivars.push_back(OriginalIvars[i]);
      // skip over rest of the ivar bitfields.
      SKIP_BITFIELDS(i , e, OriginalIvars){ while ((i < e) && OriginalIvars[i]->isBitField
()) ++i; if (i < e) --i; };
    }
    else
      Ivars.push_back(OriginalIvars[i]);
  }

  Result += "\nstatic ";
  Write__ivar_list_t_TypeDecl(Result, Ivars.size());
  Result += " "; Result += VarName;
  Result += CDecl->getNameAsString();
  Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
  Result += "\t"; Result += "sizeof(_ivar_t)"; Result += ",\n";
  Result += "\t"; Result += utostr(Ivars.size()); Result += ",\n";
  for (unsigned i =0, e = Ivars.size(); i < e; i++) {
    ObjCIvarDecl *IvarDecl = Ivars[i];
    if (i == 0)
      Result += "\t{{";
    else
      Result += "\t {";
    Result += "(unsigned long int *)&";
    if (Ivars[i]->isBitField())
      RewriteObj.ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
    else
      WriteInternalIvarName(CDecl, IvarDecl, Result);
    Result += ", ";

    Result += "\"";
    if (Ivars[i]->isBitField())
      RewriteObj.ObjCIvarBitfieldGroupDecl(Ivars[i], Result);
    else
      Result += IvarDecl->getName();
    Result += "\", ";

    QualType IVQT = IvarDecl->getType();
    if (IvarDecl->isBitField())
      IVQT = RewriteObj.GetGroupRecordTypeForObjCIvarBitfield(IvarDecl);

    std::string IvarTypeString, QuoteIvarTypeString;
    Context->getObjCEncodingForType(IVQT, IvarTypeString,
                                    IvarDecl);
    RewriteObj.QuoteDoublequotes(IvarTypeString, QuoteIvarTypeString);
    Result += "\""; Result += QuoteIvarTypeString; Result += "\", ";

    // FIXME. this alignment represents the host alignment and need be changed to
    // represent the target alignment.
    unsigned Align = Context->getTypeAlign(IVQT)/8;
    Align = llvm::Log2_32(Align);
    Result += llvm::utostr(Align); Result += ", ";
    CharUnits Size = Context->getTypeSizeInChars(IVQT);
    Result += llvm::utostr(Size.getQuantity());
    if (i  == e-1)
      Result += "}}\n";
    else
      Result += "},\n";
  }
  Result += "};\n";
}
6836}

6838/// RewriteObjCProtocolMetaData - Rewrite protocols meta-data.
6839void RewriteModernObjC::RewriteObjCProtocolMetaData(ObjCProtocolDecl *PDecl,
                                                  std::string &Result) {

// Do not synthesize the protocol more than once.
if (ObjCSynthesizedProtocols.count(PDecl->getCanonicalDecl()))
  return;
WriteModernMetadataDeclarations(Context, Result);

if (ObjCProtocolDecl *Def = PDecl->getDefinition())
  PDecl = Def;
// Must write out all protocol definitions in current qualifier list,
// and in their nested qualifiers before writing out current definition.
for (auto *I : PDecl->protocols())
  RewriteObjCProtocolMetaData(I, Result);

// Construct method lists.
std::vector<ObjCMethodDecl *> InstanceMethods, ClassMethods;
std::vector<ObjCMethodDecl *> OptInstanceMethods, OptClassMethods;
for (auto *MD : PDecl->instance_methods()) {
  if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
    OptInstanceMethods.push_back(MD);
  } else {
    InstanceMethods.push_back(MD);
  }
}

for (auto *MD : PDecl->class_methods()) {
  if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
    OptClassMethods.push_back(MD);
  } else {
    ClassMethods.push_back(MD);
  }
}
std::vector<ObjCMethodDecl *> AllMethods;
for (unsigned i = 0, e = InstanceMethods.size(); i < e; i++)
  AllMethods.push_back(InstanceMethods[i]);
for (unsigned i = 0, e = ClassMethods.size(); i < e; i++)
  AllMethods.push_back(ClassMethods[i]);
for (unsigned i = 0, e = OptInstanceMethods.size(); i < e; i++)
  AllMethods.push_back(OptInstanceMethods[i]);
for (unsigned i = 0, e = OptClassMethods.size(); i < e; i++)
  AllMethods.push_back(OptClassMethods[i]);

Write__extendedMethodTypes_initializer(*this, Context, Result,
                                       AllMethods,
                                       "_OBJC_PROTOCOL_METHOD_TYPES_",
                                       PDecl->getNameAsString());
// Protocol's super protocol list
SmallVector<ObjCProtocolDecl *, 8> SuperProtocols(PDecl->protocols());
Write_protocol_list_initializer(Context, Result, SuperProtocols,
                                "_OBJC_PROTOCOL_REFS_",
                                PDecl->getNameAsString());

Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
                                "_OBJC_PROTOCOL_INSTANCE_METHODS_",
                                PDecl->getNameAsString(), false);

Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
                                "_OBJC_PROTOCOL_CLASS_METHODS_",
                                PDecl->getNameAsString(), false);

Write_method_list_t_initializer(*this, Context, Result, OptInstanceMethods,
                                "_OBJC_PROTOCOL_OPT_INSTANCE_METHODS_",
                                PDecl->getNameAsString(), false);

Write_method_list_t_initializer(*this, Context, Result, OptClassMethods,
                                "_OBJC_PROTOCOL_OPT_CLASS_METHODS_",
                                PDecl->getNameAsString(), false);

// Protocol's property metadata.
SmallVector<ObjCPropertyDecl *, 8> ProtocolProperties(
    PDecl->instance_properties());
Write_prop_list_t_initializer(*this, Context, Result, ProtocolProperties,
                               /* Container */nullptr,
                               "_OBJC_PROTOCOL_PROPERTIES_",
                               PDecl->getNameAsString());

// Writer out root metadata for current protocol: struct _protocol_t
Result += "\n";
if (LangOpts.MicrosoftExt)
  Result += "static ";
Result += "struct _protocol_t _OBJC_PROTOCOL_";
Result += PDecl->getNameAsString();
Result += " __attribute__ ((used)) = {\n";
Result += "\t0,\n"; // id is; is null
Result += "\t\""; Result += PDecl->getNameAsString(); Result += "\",\n";
if (SuperProtocols.size() > 0) {
  Result += "\t(const struct _protocol_list_t *)&"; Result += "_OBJC_PROTOCOL_REFS_";
  Result += PDecl->getNameAsString(); Result += ",\n";
}
else
  Result += "\t0,\n";
if (InstanceMethods.size() > 0) {
  Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
  Result += PDecl->getNameAsString(); Result += ",\n";
}
else
  Result += "\t0,\n";

if (ClassMethods.size() > 0) {
  Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_CLASS_METHODS_";
  Result += PDecl->getNameAsString(); Result += ",\n";
}
else
  Result += "\t0,\n";

if (OptInstanceMethods.size() > 0) {
  Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_INSTANCE_METHODS_";
  Result += PDecl->getNameAsString(); Result += ",\n";
}
else
  Result += "\t0,\n";

if (OptClassMethods.size() > 0) {
  Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_CLASS_METHODS_";
  Result += PDecl->getNameAsString(); Result += ",\n";
}
else
  Result += "\t0,\n";

if (ProtocolProperties.size() > 0) {
  Result += "\t(const struct _prop_list_t *)&_OBJC_PROTOCOL_PROPERTIES_";
  Result += PDecl->getNameAsString(); Result += ",\n";
}
else
  Result += "\t0,\n";

Result += "\t"; Result += "sizeof(_protocol_t)"; Result += ",\n";
Result += "\t0,\n";

if (AllMethods.size() > 0) {
  Result += "\t(const char **)&"; Result += "_OBJC_PROTOCOL_METHOD_TYPES_";
  Result += PDecl->getNameAsString();
  Result += "\n};\n";
}
else
  Result += "\t0\n};\n";

if (LangOpts.MicrosoftExt)
  Result += "static ";
Result += "struct _protocol_t *";
Result += "_OBJC_LABEL_PROTOCOL_$_"; Result += PDecl->getNameAsString();
Result += " = &_OBJC_PROTOCOL_"; Result += PDecl->getNameAsString();
Result += ";\n";

// Mark this protocol as having been generated.
if (!ObjCSynthesizedProtocols.insert(PDecl->getCanonicalDecl()).second)
  llvm_unreachable("protocol already synthesized")::llvm::llvm_unreachable_internal("protocol already synthesized"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 6986);
6987}

6989/// hasObjCExceptionAttribute - Return true if this class or any super
6990/// class has the __objc_exception__ attribute.
6991/// FIXME. Move this to ASTContext.cpp as it is also used for IRGen.
6992static bool hasObjCExceptionAttribute(ASTContext &Context,
                                    const ObjCInterfaceDecl *OID) {
if (OID->hasAttr<ObjCExceptionAttr>())
  return true;
if (const ObjCInterfaceDecl *Super = OID->getSuperClass())
  return hasObjCExceptionAttribute(Context, Super);
return false;
6999}

7001void RewriteModernObjC::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
                                         std::string &Result) {
ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();

// Explicitly declared @interface's are already synthesized.
if (CDecl->isImplicitInterfaceDecl())
  assert(false &&((false && "Legacy implicit interface rewriting not supported in moder abi"
) ? static_cast<void> (0) : __assert_fail ("false && \"Legacy implicit interface rewriting not supported in moder abi\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 7008, __PRETTY_FUNCTION__))
         "Legacy implicit interface rewriting not supported in moder abi")((false && "Legacy implicit interface rewriting not supported in moder abi"
) ? static_cast<void> (0) : __assert_fail ("false && \"Legacy implicit interface rewriting not supported in moder abi\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 7008, __PRETTY_FUNCTION__));

WriteModernMetadataDeclarations(Context, Result);
SmallVector<ObjCIvarDecl *, 8> IVars;

for (ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
    IVD; IVD = IVD->getNextIvar()) {
  // Ignore unnamed bit-fields.
  if (!IVD->getDeclName())
    continue;
  IVars.push_back(IVD);
}

Write__ivar_list_t_initializer(*this, Context, Result, IVars,
                               "_OBJC_$_INSTANCE_VARIABLES_",
                               CDecl);

// Build _objc_method_list for class's instance methods if needed
SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());

// If any of our property implementations have associated getters or
// setters, produce metadata for them as well.
for (const auto *Prop : IDecl->property_impls()) {
  if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
    continue;
  if (!Prop->getPropertyIvarDecl())
    continue;
  ObjCPropertyDecl *PD = Prop->getPropertyDecl();
  if (!PD)
    continue;
  if (ObjCMethodDecl *Getter = Prop->getGetterMethodDecl())
    if (mustSynthesizeSetterGetterMethod(IDecl, PD, true /*getter*/))
      InstanceMethods.push_back(Getter);
  if (PD->isReadOnly())
    continue;
  if (ObjCMethodDecl *Setter = Prop->getSetterMethodDecl())
    if (mustSynthesizeSetterGetterMethod(IDecl, PD, false /*setter*/))
      InstanceMethods.push_back(Setter);
}

Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
                                "_OBJC_$_INSTANCE_METHODS_",
                                IDecl->getNameAsString(), true);

SmallVector<ObjCMethodDecl *, 32> ClassMethods(IDecl->class_methods());

Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
                                "_OBJC_$_CLASS_METHODS_",
                                IDecl->getNameAsString(), true);

// Protocols referenced in class declaration?
// Protocol's super protocol list
std::vector<ObjCProtocolDecl *> RefedProtocols;
const ObjCList<ObjCProtocolDecl> &Protocols = CDecl->getReferencedProtocols();
for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
     E = Protocols.end();
     I != E; ++I) {
  RefedProtocols.push_back(*I);
  // Must write out all protocol definitions in current qualifier list,
  // and in their nested qualifiers before writing out current definition.
  RewriteObjCProtocolMetaData(*I, Result);
}

Write_protocol_list_initializer(Context, Result,
                                RefedProtocols,
                                "_OBJC_CLASS_PROTOCOLS_$_",
                                IDecl->getNameAsString());

// Protocol's property metadata.
SmallVector<ObjCPropertyDecl *, 8> ClassProperties(
    CDecl->instance_properties());
Write_prop_list_t_initializer(*this, Context, Result, ClassProperties,
                               /* Container */IDecl,
                               "_OBJC_$_PROP_LIST_",
                               CDecl->getNameAsString());

// Data for initializing _class_ro_t  metaclass meta-data
uint32_t flags = CLS_META;
std::string InstanceSize;
std::string InstanceStart;

bool classIsHidden = CDecl->getVisibility() == HiddenVisibility;
if (classIsHidden)
  flags |= OBJC2_CLS_HIDDEN;

if (!CDecl->getSuperClass())
  // class is root
  flags |= CLS_ROOT;
InstanceSize = "sizeof(struct _class_t)";
InstanceStart = InstanceSize;
Write__class_ro_t_initializer(Context, Result, flags,
                              InstanceStart, InstanceSize,
                              ClassMethods,
                              nullptr,
                              nullptr,
                              nullptr,
                              "_OBJC_METACLASS_RO_$_",
                              CDecl->getNameAsString());

// Data for initializing _class_ro_t meta-data
flags = CLS;
if (classIsHidden)
  flags |= OBJC2_CLS_HIDDEN;

if (hasObjCExceptionAttribute(*Context, CDecl))
  flags |= CLS_EXCEPTION;

if (!CDecl->getSuperClass())
  // class is root
  flags |= CLS_ROOT;

InstanceSize.clear();
InstanceStart.clear();
if (!ObjCSynthesizedStructs.count(CDecl)) {
  InstanceSize = "0";
  InstanceStart = "0";
}
else {
  InstanceSize = "sizeof(struct ";
  InstanceSize += CDecl->getNameAsString();
  InstanceSize += "_IMPL)";

  ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
  if (IVD) {
    RewriteIvarOffsetComputation(IVD, InstanceStart);
  }
  else
    InstanceStart = InstanceSize;
}
Write__class_ro_t_initializer(Context, Result, flags,
                              InstanceStart, InstanceSize,
                              InstanceMethods,
                              RefedProtocols,
                              IVars,
                              ClassProperties,
                              "_OBJC_CLASS_RO_$_",
                              CDecl->getNameAsString());

Write_class_t(Context, Result,
              "OBJC_METACLASS_$_",
              CDecl, /*metaclass*/true);

Write_class_t(Context, Result,
              "OBJC_CLASS_$_",
              CDecl, /*metaclass*/false);

if (ImplementationIsNonLazy(IDecl))
  DefinedNonLazyClasses.push_back(CDecl);
7156}

7158void RewriteModernObjC::RewriteClassSetupInitHook(std::string &Result) {
int ClsDefCount = ClassImplementation.size();
if (!ClsDefCount)
  return;
Result += "#pragma section(\".objc_inithooks$B\", long, read, write)\n";
Result += "__declspec(allocate(\".objc_inithooks$B\")) ";
Result += "static void *OBJC_CLASS_SETUP[] = {\n";
for (int i = 0; i < ClsDefCount; i++) {
  ObjCImplementationDecl *IDecl = ClassImplementation[i];
  ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
  Result += "\t(void *)&OBJC_CLASS_SETUP_$_";
  Result  += CDecl->getName(); Result += ",\n";
}
Result += "};\n";
7172}

7174void RewriteModernObjC::RewriteMetaDataIntoBuffer(std::string &Result) {
int ClsDefCount = ClassImplementation.size();
int CatDefCount = CategoryImplementation.size();

// For each implemented class, write out all its meta data.
for (int i = 0; i < ClsDefCount; i++)
  RewriteObjCClassMetaData(ClassImplementation[i], Result);

RewriteClassSetupInitHook(Result);

// For each implemented category, write out all its meta data.
for (int i = 0; i < CatDefCount; i++)
  RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result);

RewriteCategorySetupInitHook(Result);

if (ClsDefCount > 0) {
  if (LangOpts.MicrosoftExt)
    Result += "__declspec(allocate(\".objc_classlist$B\")) ";
  Result += "static struct _class_t *L_OBJC_LABEL_CLASS_$ [";
  Result += llvm::utostr(ClsDefCount); Result += "]";
  Result +=
    " __attribute__((used, section (\"__DATA, __objc_classlist,"
    "regular,no_dead_strip\")))= {\n";
  for (int i = 0; i < ClsDefCount; i++) {
    Result += "\t&OBJC_CLASS_$_";
    Result += ClassImplementation[i]->getNameAsString();
    Result += ",\n";
  }
  Result += "};\n";

  if (!DefinedNonLazyClasses.empty()) {
    if (LangOpts.MicrosoftExt)
      Result += "__declspec(allocate(\".objc_nlclslist$B\")) \n";
    Result += "static struct _class_t *_OBJC_LABEL_NONLAZY_CLASS_$[] = {\n\t";
    for (unsigned i = 0, e = DefinedNonLazyClasses.size(); i < e; i++) {
      Result += "\t&OBJC_CLASS_$_"; Result += DefinedNonLazyClasses[i]->getNameAsString();
      Result += ",\n";
    }
    Result += "};\n";
  }
}

if (CatDefCount > 0) {
  if (LangOpts.MicrosoftExt)
    Result += "__declspec(allocate(\".objc_catlist$B\")) ";
  Result += "static struct _category_t *L_OBJC_LABEL_CATEGORY_$ [";
  Result += llvm::utostr(CatDefCount); Result += "]";
  Result +=
  " __attribute__((used, section (\"__DATA, __objc_catlist,"
  "regular,no_dead_strip\")))= {\n";
  for (int i = 0; i < CatDefCount; i++) {
    Result += "\t&_OBJC_$_CATEGORY_";
    Result +=
      CategoryImplementation[i]->getClassInterface()->getNameAsString();
    Result += "_$_";
    Result += CategoryImplementation[i]->getNameAsString();
    Result += ",\n";
  }
  Result += "};\n";
}

if (!DefinedNonLazyCategories.empty()) {
  if (LangOpts.MicrosoftExt)
    Result += "__declspec(allocate(\".objc_nlcatlist$B\")) \n";
  Result += "static struct _category_t *_OBJC_LABEL_NONLAZY_CATEGORY_$[] = {\n\t";
  for (unsigned i = 0, e = DefinedNonLazyCategories.size(); i < e; i++) {
    Result += "\t&_OBJC_$_CATEGORY_";
    Result +=
      DefinedNonLazyCategories[i]->getClassInterface()->getNameAsString();
    Result += "_$_";
    Result += DefinedNonLazyCategories[i]->getNameAsString();
    Result += ",\n";
  }
  Result += "};\n";
}
7250}

7252void RewriteModernObjC::WriteImageInfo(std::string &Result) {
if (LangOpts.MicrosoftExt)
  Result += "__declspec(allocate(\".objc_imageinfo$B\")) \n";

Result += "static struct IMAGE_INFO { unsigned version; unsigned flag; } ";
// version 0, ObjCABI is 2
Result += "_OBJC_IMAGE_INFO = { 0, 2 };\n";
7259}

7261/// RewriteObjCCategoryImplDecl - Rewrite metadata for each category
7262/// implementation.
7263void RewriteModernObjC::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl,
                                            std::string &Result) {
WriteModernMetadataDeclarations(Context, Result);
ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
// Find category declaration for this implementation.
ObjCCategoryDecl *CDecl
  = ClassDecl->FindCategoryDeclaration(IDecl->getIdentifier());

std::string FullCategoryName = ClassDecl->getNameAsString();
FullCategoryName += "_$_";
FullCategoryName += CDecl->getNameAsString();

// Build _objc_method_list for class's instance methods if needed
SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());

// If any of our property implementations have associated getters or
// setters, produce metadata for them as well.
for (const auto *Prop : IDecl->property_impls()) {
  if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
    continue;
  if (!Prop->getPropertyIvarDecl())
    continue;
  ObjCPropertyDecl *PD = Prop->getPropertyDecl();
  if (!PD)
    continue;
  if (ObjCMethodDecl *Getter = Prop->getGetterMethodDecl())
    InstanceMethods.push_back(Getter);
  if (PD->isReadOnly())
    continue;
  if (ObjCMethodDecl *Setter = Prop->getSetterMethodDecl())
    InstanceMethods.push_back(Setter);
}

Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
                                "_OBJC_$_CATEGORY_INSTANCE_METHODS_",
                                FullCategoryName, true);

SmallVector<ObjCMethodDecl *, 32> ClassMethods(IDecl->class_methods());

Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
                                "_OBJC_$_CATEGORY_CLASS_METHODS_",
                                FullCategoryName, true);

// Protocols referenced in class declaration?
// Protocol's super protocol list
SmallVector<ObjCProtocolDecl *, 8> RefedProtocols(CDecl->protocols());
for (auto *I : CDecl->protocols())
  // Must write out all protocol definitions in current qualifier list,
  // and in their nested qualifiers before writing out current definition.
  RewriteObjCProtocolMetaData(I, Result);

Write_protocol_list_initializer(Context, Result,
                                RefedProtocols,
                                "_OBJC_CATEGORY_PROTOCOLS_$_",
                                FullCategoryName);

// Protocol's property metadata.
SmallVector<ObjCPropertyDecl *, 8> ClassProperties(
    CDecl->instance_properties());
Write_prop_list_t_initializer(*this, Context, Result, ClassProperties,
                              /* Container */IDecl,
                              "_OBJC_$_PROP_LIST_",
                              FullCategoryName);

Write_category_t(*this, Context, Result,
                 CDecl,
                 ClassDecl,
                 InstanceMethods,
                 ClassMethods,
                 RefedProtocols,
                 ClassProperties);

// Determine if this category is also "non-lazy".
if (ImplementationIsNonLazy(IDecl))
  DefinedNonLazyCategories.push_back(CDecl);
7338}

7340void RewriteModernObjC::RewriteCategorySetupInitHook(std::string &Result) {
int CatDefCount = CategoryImplementation.size();
if (!CatDefCount)
  return;
Result += "#pragma section(\".objc_inithooks$B\", long, read, write)\n";
Result += "__declspec(allocate(\".objc_inithooks$B\")) ";
Result += "static void *OBJC_CATEGORY_SETUP[] = {\n";
for (int i = 0; i < CatDefCount; i++) {
  ObjCCategoryImplDecl *IDecl = CategoryImplementation[i];
  ObjCCategoryDecl *CatDecl= IDecl->getCategoryDecl();
  ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
  Result += "\t(void *)&OBJC_CATEGORY_SETUP_$_";
  Result += ClassDecl->getName();
  Result += "_$_";
  Result += CatDecl->getName();
  Result += ",\n";
}
Result += "};\n";
7358}

7360// RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or
7361/// class methods.
7362template<typename MethodIterator>
7363void RewriteModernObjC::RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
                                           MethodIterator MethodEnd,
                                           bool IsInstanceMethod,
                                           StringRef prefix,
                                           StringRef ClassName,
                                           std::string &Result) {
if (MethodBegin == MethodEnd) return;

if (!objc_impl_method) {
  /* struct _objc_method {
   SEL _cmd;
   char *method_types;
   void *_imp;
   }
   */
  Result += "\nstruct _objc_method {\n";
  Result += "\tSEL _cmd;\n";
  Result += "\tchar *method_types;\n";
  Result += "\tvoid *_imp;\n";
  Result += "};\n";

  objc_impl_method = true;
}

// Build _objc_method_list for class's methods if needed

/* struct  {
 struct _objc_method_list *next_method;
 int method_count;
 struct _objc_method method_list[];
 }
 */
unsigned NumMethods = std::distance(MethodBegin, MethodEnd);
Result += "\n";
if (LangOpts.MicrosoftExt) {
  if (IsInstanceMethod)
    Result += "__declspec(allocate(\".inst_meth$B\")) ";
  else
    Result += "__declspec(allocate(\".cls_meth$B\")) ";
}
Result += "static struct {\n";
Result += "\tstruct _objc_method_list *next_method;\n";
Result += "\tint method_count;\n";
Result += "\tstruct _objc_method method_list[";
Result += utostr(NumMethods);
Result += "];\n} _OBJC_";
Result += prefix;
Result += IsInstanceMethod ? "INSTANCE" : "CLASS";
Result += "_METHODS_";
Result += ClassName;
Result += " __attribute__ ((used, section (\"__OBJC, __";
Result += IsInstanceMethod ? "inst" : "cls";
Result += "_meth\")))= ";
Result += "{\n\t0, " + utostr(NumMethods) + "\n";

Result += "\t,{{(SEL)\"";
Result += (*MethodBegin)->getSelector().getAsString().c_str();
std::string MethodTypeString;
Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
Result += "\", \"";
Result += MethodTypeString;
Result += "\", (void *)";
Result += MethodInternalNames[*MethodBegin];
Result += "}\n";
for (++MethodBegin; MethodBegin != MethodEnd; ++MethodBegin) {
  Result += "\t  ,{(SEL)\"";
  Result += (*MethodBegin)->getSelector().getAsString().c_str();
  std::string MethodTypeString;
  Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
  Result += "\", \"";
  Result += MethodTypeString;
  Result += "\", (void *)";
  Result += MethodInternalNames[*MethodBegin];
  Result += "}\n";
}
Result += "\t }\n};\n";
7439}

7441Stmt *RewriteModernObjC::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) {
SourceRange OldRange = IV->getSourceRange();
Expr *BaseExpr = IV->getBase();

// Rewrite the base, but without actually doing replaces.
{
  DisableReplaceStmtScope S(*this);
  BaseExpr = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(BaseExpr));
1
The object is a 'Expr'→
  IV->setBase(BaseExpr);
}

ObjCIvarDecl *D = IV->getDecl();

Expr *Replacement = IV;

  if (BaseExpr->getType()->isObjCObjectPointerType()) {
2
←
Calling 'Type::isObjCObjectPointerType'→
5
←
Returning from 'Type::isObjCObjectPointerType'→
6
←
Taking true branch→
    const ObjCInterfaceType *iFaceDecl =
      dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
    assert(iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null")((iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null"
) ? static_cast<void> (0) : __assert_fail ("iFaceDecl && \"RewriteObjCIvarRefExpr - iFaceDecl is null\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 7459, __PRETTY_FUNCTION__));
7
←
Assuming 'iFaceDecl' is non-null→
8
←
'?' condition is true→
    // lookup which class implements the instance variable.
    ObjCInterfaceDecl *clsDeclared = nullptr;
    iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
                                                 clsDeclared);
    assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class")((clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class"
) ? static_cast<void> (0) : __assert_fail ("clsDeclared && \"RewriteObjCIvarRefExpr(): Can't find class\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp"
, 7464, __PRETTY_FUNCTION__));
9
←
Assuming 'clsDeclared' is non-null→
10
←
'?' condition is true→

    // Build name of symbol holding ivar offset.
    std::string IvarOffsetName;
    if (D->isBitField())
11
←
Assuming the condition is true→
12
←
Taking true branch→
      ObjCIvarBitfieldGroupOffset(D, IvarOffsetName);
    else
      WriteInternalIvarName(clsDeclared, D, IvarOffsetName);

    ReferencedIvars[clsDeclared].insert(D);

    // cast offset to "char *".
    CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context,
                                                  Context->getPointerType(Context->CharTy),
                                                  CK_BitCast,
                                                  BaseExpr);
    VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
                                     SourceLocation(), &Context->Idents.get(IvarOffsetName),
                                     Context->UnsignedLongTy, nullptr,
                                     SC_Extern);
    DeclRefExpr *DRE = new (Context)
        DeclRefExpr(*Context, NewVD, false, Context->UnsignedLongTy,
                    VK_LValue, SourceLocation());
    BinaryOperator *addExpr =
      new (Context) BinaryOperator(castExpr, DRE, BO_Add,
                                   Context->getPointerType(Context->CharTy),
                                   VK_RValue, OK_Ordinary, SourceLocation(), FPOptions());
    // Don't forget the parens to enforce the proper binding.
    ParenExpr *PE = new (Context) ParenExpr(SourceLocation(),
                                            SourceLocation(),
                                            addExpr);
    QualType IvarT = D->getType();
    if (D->isBitField())
13
←
Assuming the condition is false→
14
←
Taking false branch→
      IvarT = GetGroupRecordTypeForObjCIvarBitfield(D);

    if (!isa<TypedefType>(IvarT) && IvarT->isRecordType()) {
15
←
Assuming 'IvarT' is not a 'TypedefType'→
16
←
Calling 'Type::isRecordType'→
19
←
Returning from 'Type::isRecordType'→
20
←
Taking true branch→
      RecordDecl *RD = IvarT->castAs<RecordType>()->getDecl();
21
←
The object is a 'RecordType'→
      RD = RD->getDefinition();
      if (RD21.1
'RD' is non-null
1
'RD' is non-null
 && !RD->getDeclName().getAsIdentifierInfo()) {
22
←
Taking true branch→
        // decltype(((Foo_IMPL*)0)->bar) *
        ObjCContainerDecl *CDecl =
24
←
'CDecl' initialized to a null pointer value→
          dyn_cast<ObjCContainerDecl>(D->getDeclContext());
23
←
Assuming the object is not a 'ObjCContainerDecl'→
        // ivar in class extensions requires special treatment.
        if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl))
25
←
Assuming 'CatDecl' is null→
26
←
Taking false branch→
          CDecl = CatDecl->getClassInterface();
        std::string RecName = std::string(CDecl->getName());
27
←
Called C++ object pointer is null
        RecName += "_IMPL";
        RecordDecl *RD = RecordDecl::Create(
            *Context, TTK_Struct, TUDecl, SourceLocation(), SourceLocation(),
            &Context->Idents.get(RecName));
        QualType PtrStructIMPL = Context->getPointerType(Context->getTagDeclType(RD));
        unsigned UnsignedIntSize =
          static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
        Expr *Zero = IntegerLiteral::Create(*Context,
                                            llvm::APInt(UnsignedIntSize, 0),
                                            Context->UnsignedIntTy, SourceLocation());
        Zero = NoTypeInfoCStyleCastExpr(Context, PtrStructIMPL, CK_BitCast, Zero);
        ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
                                                Zero);
        FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                          SourceLocation(),
                                          &Context->Idents.get(D->getNameAsString()),
                                          IvarT, nullptr,
                                          /*BitWidth=*/nullptr,
                                          /*Mutable=*/true, ICIS_NoInit);
        MemberExpr *ME = MemberExpr::CreateImplicit(
            *Context, PE, true, FD, FD->getType(), VK_LValue, OK_Ordinary);
        IvarT = Context->getDecltypeType(ME, ME->getType());
      }
    }
    convertObjCTypeToCStyleType(IvarT);
    QualType castT = Context->getPointerType(IvarT);

    castExpr = NoTypeInfoCStyleCastExpr(Context,
                                        castT,
                                        CK_BitCast,
                                        PE);


    Expr *Exp = new (Context) UnaryOperator(castExpr, UO_Deref, IvarT,
                                            VK_LValue, OK_Ordinary,
                                            SourceLocation(), false);
    PE = new (Context) ParenExpr(OldRange.getBegin(),
                                 OldRange.getEnd(),
                                 Exp);

    if (D->isBitField()) {
      FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
                                        SourceLocation(),
                                        &Context->Idents.get(D->getNameAsString()),
                                        D->getType(), nullptr,
                                        /*BitWidth=*/D->getBitWidth(),
                                        /*Mutable=*/true, ICIS_NoInit);
      MemberExpr *ME =
          MemberExpr::CreateImplicit(*Context, PE, /*isArrow*/ false, FD,
                                     FD->getType(), VK_LValue, OK_Ordinary);
      Replacement = ME;

    }
    else
      Replacement = PE;
  }

  ReplaceStmtWithRange(IV, Replacement, OldRange);
  return Replacement;
7569}

7571#endif // CLANG_ENABLE_OBJC_REWRITER

←

/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h

1//===- Type.h - C Language Family Type Representation -----------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9/// \file
10/// C Language Family Type Representation
11///
12/// This file defines the clang::Type interface and subclasses, used to
13/// represent types for languages in the C family.
14//
15//===----------------------------------------------------------------------===//

17#ifndef LLVM_CLANG_AST_TYPE_H
18#define LLVM_CLANG_AST_TYPE_H

20#include "clang/AST/DependencyFlags.h"
21#include "clang/AST/NestedNameSpecifier.h"
22#include "clang/AST/TemplateName.h"
23#include "clang/Basic/AddressSpaces.h"
24#include "clang/Basic/AttrKinds.h"
25#include "clang/Basic/Diagnostic.h"
26#include "clang/Basic/ExceptionSpecificationType.h"
27#include "clang/Basic/LLVM.h"
28#include "clang/Basic/Linkage.h"
29#include "clang/Basic/PartialDiagnostic.h"
30#include "clang/Basic/SourceLocation.h"
31#include "clang/Basic/Specifiers.h"
32#include "clang/Basic/Visibility.h"
33#include "llvm/ADT/APInt.h"
34#include "llvm/ADT/APSInt.h"
35#include "llvm/ADT/ArrayRef.h"
36#include "llvm/ADT/FoldingSet.h"
37#include "llvm/ADT/None.h"
38#include "llvm/ADT/Optional.h"
39#include "llvm/ADT/PointerIntPair.h"
40#include "llvm/ADT/PointerUnion.h"
41#include "llvm/ADT/StringRef.h"
42#include "llvm/ADT/Twine.h"
43#include "llvm/ADT/iterator_range.h"
44#include "llvm/Support/Casting.h"
45#include "llvm/Support/Compiler.h"
46#include "llvm/Support/ErrorHandling.h"
47#include "llvm/Support/PointerLikeTypeTraits.h"
48#include "llvm/Support/TrailingObjects.h"
49#include "llvm/Support/type_traits.h"
50#include <cassert>
51#include <cstddef>
52#include <cstdint>
53#include <cstring>
54#include <string>
55#include <type_traits>
56#include <utility>

58namespace clang {

60class ExtQuals;
61class QualType;
62class ConceptDecl;
63class TagDecl;
64class Type;

66enum {
TypeAlignmentInBits = 4,
TypeAlignment = 1 << TypeAlignmentInBits
69};

71namespace serialization {
template <class T> class AbstractTypeReader;
template <class T> class AbstractTypeWriter;
74}

76} // namespace clang

78namespace llvm {

template <typename T>
struct PointerLikeTypeTraits;
template<>
struct PointerLikeTypeTraits< ::clang::Type*> {
  static inline void *getAsVoidPointer(::clang::Type *P) { return P; }

  static inline ::clang::Type *getFromVoidPointer(void *P) {
    return static_cast< ::clang::Type*>(P);
  }

  static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits;
};

template<>
struct PointerLikeTypeTraits< ::clang::ExtQuals*> {
  static inline void *getAsVoidPointer(::clang::ExtQuals *P) { return P; }

  static inline ::clang::ExtQuals *getFromVoidPointer(void *P) {
    return static_cast< ::clang::ExtQuals*>(P);
  }

  static constexpr int NumLowBitsAvailable = clang::TypeAlignmentInBits;
};

104} // namespace llvm

106namespace clang {

108class ASTContext;
109template <typename> class CanQual;
110class CXXRecordDecl;
111class DeclContext;
112class EnumDecl;
113class Expr;
114class ExtQualsTypeCommonBase;
115class FunctionDecl;
116class IdentifierInfo;
117class NamedDecl;
118class ObjCInterfaceDecl;
119class ObjCProtocolDecl;
120class ObjCTypeParamDecl;
121struct PrintingPolicy;
122class RecordDecl;
123class Stmt;
124class TagDecl;
125class TemplateArgument;
126class TemplateArgumentListInfo;
127class TemplateArgumentLoc;
128class TemplateTypeParmDecl;
129class TypedefNameDecl;
130class UnresolvedUsingTypenameDecl;

132using CanQualType = CanQual<Type>;

134// Provide forward declarations for all of the *Type classes.
135#define TYPE(Class, Base) class Class##Type;
136#include "clang/AST/TypeNodes.inc"

138/// The collection of all-type qualifiers we support.
139/// Clang supports five independent qualifiers:
140/// * C99: const, volatile, and restrict
141/// * MS: __unaligned
142/// * Embedded C (TR18037): address spaces
143/// * Objective C: the GC attributes (none, weak, or strong)
144class Qualifiers {
145public:
enum TQ { // NOTE: These flags must be kept in sync with DeclSpec::TQ.
  Const    = 0x1,
  Restrict = 0x2,
  Volatile = 0x4,
  CVRMask = Const | Volatile | Restrict
};

enum GC {
  GCNone = 0,
  Weak,
  Strong
};

enum ObjCLifetime {
  /// There is no lifetime qualification on this type.
  OCL_None,

  /// This object can be modified without requiring retains or
  /// releases.
  OCL_ExplicitNone,

  /// Assigning into this object requires the old value to be
  /// released and the new value to be retained.  The timing of the
  /// release of the old value is inexact: it may be moved to
  /// immediately after the last known point where the value is
  /// live.
  OCL_Strong,

  /// Reading or writing from this object requires a barrier call.
  OCL_Weak,

  /// Assigning into this object requires a lifetime extension.
  OCL_Autoreleasing
};

enum {
  /// The maximum supported address space number.
  /// 23 bits should be enough for anyone.
  MaxAddressSpace = 0x7fffffu,

  /// The width of the "fast" qualifier mask.
  FastWidth = 3,

  /// The fast qualifier mask.
  FastMask = (1 << FastWidth) - 1
};

/// Returns the common set of qualifiers while removing them from
/// the given sets.
static Qualifiers removeCommonQualifiers(Qualifiers &L, Qualifiers &R) {
  // If both are only CVR-qualified, bit operations are sufficient.
  if (!(L.Mask & ~CVRMask) && !(R.Mask & ~CVRMask)) {
    Qualifiers Q;
    Q.Mask = L.Mask & R.Mask;
    L.Mask &= ~Q.Mask;
    R.Mask &= ~Q.Mask;
    return Q;
  }

  Qualifiers Q;
  unsigned CommonCRV = L.getCVRQualifiers() & R.getCVRQualifiers();
  Q.addCVRQualifiers(CommonCRV);
  L.removeCVRQualifiers(CommonCRV);
  R.removeCVRQualifiers(CommonCRV);

  if (L.getObjCGCAttr() == R.getObjCGCAttr()) {
    Q.setObjCGCAttr(L.getObjCGCAttr());
    L.removeObjCGCAttr();
    R.removeObjCGCAttr();
  }

  if (L.getObjCLifetime() == R.getObjCLifetime()) {
    Q.setObjCLifetime(L.getObjCLifetime());
    L.removeObjCLifetime();
    R.removeObjCLifetime();
  }

  if (L.getAddressSpace() == R.getAddressSpace()) {
    Q.setAddressSpace(L.getAddressSpace());
    L.removeAddressSpace();
    R.removeAddressSpace();
  }
  return Q;
}

static Qualifiers fromFastMask(unsigned Mask) {
  Qualifiers Qs;
  Qs.addFastQualifiers(Mask);
  return Qs;
}

static Qualifiers fromCVRMask(unsigned CVR) {
  Qualifiers Qs;
  Qs.addCVRQualifiers(CVR);
  return Qs;
}

static Qualifiers fromCVRUMask(unsigned CVRU) {
  Qualifiers Qs;
  Qs.addCVRUQualifiers(CVRU);
  return Qs;
}

// Deserialize qualifiers from an opaque representation.
static Qualifiers fromOpaqueValue(unsigned opaque) {
  Qualifiers Qs;
  Qs.Mask = opaque;
  return Qs;
}

// Serialize these qualifiers into an opaque representation.
unsigned getAsOpaqueValue() const {
  return Mask;
}

bool hasConst() const { return Mask & Const; }
bool hasOnlyConst() const { return Mask == Const; }
void removeConst() { Mask &= ~Const; }
void addConst() { Mask |= Const; }

bool hasVolatile() const { return Mask & Volatile; }
bool hasOnlyVolatile() const { return Mask == Volatile; }
void removeVolatile() { Mask &= ~Volatile; }
void addVolatile() { Mask |= Volatile; }

bool hasRestrict() const { return Mask & Restrict; }
bool hasOnlyRestrict() const { return Mask == Restrict; }
void removeRestrict() { Mask &= ~Restrict; }
void addRestrict() { Mask |= Restrict; }

bool hasCVRQualifiers() const { return getCVRQualifiers(); }
unsigned getCVRQualifiers() const { return Mask & CVRMask; }
unsigned getCVRUQualifiers() const { return Mask & (CVRMask | UMask); }

void setCVRQualifiers(unsigned mask) {
  assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits"
) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 281, __PRETTY_FUNCTION__));
  Mask = (Mask & ~CVRMask) | mask;
}
void removeCVRQualifiers(unsigned mask) {
  assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits"
) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 285, __PRETTY_FUNCTION__));
  Mask &= ~mask;
}
void removeCVRQualifiers() {
  removeCVRQualifiers(CVRMask);
}
void addCVRQualifiers(unsigned mask) {
  assert(!(mask & ~CVRMask) && "bitmask contains non-CVR bits")((!(mask & ~CVRMask) && "bitmask contains non-CVR bits"
) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask) && \"bitmask contains non-CVR bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 292, __PRETTY_FUNCTION__));
  Mask |= mask;
}
void addCVRUQualifiers(unsigned mask) {
  assert(!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits")((!(mask & ~CVRMask & ~UMask) && "bitmask contains non-CVRU bits"
) ? static_cast<void> (0) : __assert_fail ("!(mask & ~CVRMask & ~UMask) && \"bitmask contains non-CVRU bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 296, __PRETTY_FUNCTION__));
  Mask |= mask;
}

bool hasUnaligned() const { return Mask & UMask; }
void setUnaligned(bool flag) {
  Mask = (Mask & ~UMask) | (flag ? UMask : 0);
}
void removeUnaligned() { Mask &= ~UMask; }
void addUnaligned() { Mask |= UMask; }

bool hasObjCGCAttr() const { return Mask & GCAttrMask; }
GC getObjCGCAttr() const { return GC((Mask & GCAttrMask) >> GCAttrShift); }
void setObjCGCAttr(GC type) {
  Mask = (Mask & ~GCAttrMask) | (type << GCAttrShift);
}
void removeObjCGCAttr() { setObjCGCAttr(GCNone); }
void addObjCGCAttr(GC type) {
  assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 314, __PRETTY_FUNCTION__));
  setObjCGCAttr(type);
}
Qualifiers withoutObjCGCAttr() const {
  Qualifiers qs = *this;
  qs.removeObjCGCAttr();
  return qs;
}
Qualifiers withoutObjCLifetime() const {
  Qualifiers qs = *this;
  qs.removeObjCLifetime();
  return qs;
}
Qualifiers withoutAddressSpace() const {
  Qualifiers qs = *this;
  qs.removeAddressSpace();
  return qs;
}

bool hasObjCLifetime() const { return Mask & LifetimeMask; }
ObjCLifetime getObjCLifetime() const {
  return ObjCLifetime((Mask & LifetimeMask) >> LifetimeShift);
}
void setObjCLifetime(ObjCLifetime type) {
  Mask = (Mask & ~LifetimeMask) | (type << LifetimeShift);
}
void removeObjCLifetime() { setObjCLifetime(OCL_None); }
void addObjCLifetime(ObjCLifetime type) {
  assert(type)((type) ? static_cast<void> (0) : __assert_fail ("type"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 342, __PRETTY_FUNCTION__));
  assert(!hasObjCLifetime())((!hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail
 ("!hasObjCLifetime()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 343, __PRETTY_FUNCTION__));
  Mask |= (type << LifetimeShift);
}

/// True if the lifetime is neither None or ExplicitNone.
bool hasNonTrivialObjCLifetime() const {
  ObjCLifetime lifetime = getObjCLifetime();
  return (lifetime > OCL_ExplicitNone);
}

/// True if the lifetime is either strong or weak.
bool hasStrongOrWeakObjCLifetime() const {
  ObjCLifetime lifetime = getObjCLifetime();
  return (lifetime == OCL_Strong || lifetime == OCL_Weak);
}

bool hasAddressSpace() const { return Mask & AddressSpaceMask; }
LangAS getAddressSpace() const {
  return static_cast<LangAS>(Mask >> AddressSpaceShift);
}
bool hasTargetSpecificAddressSpace() const {
  return isTargetAddressSpace(getAddressSpace());
}
/// Get the address space attribute value to be printed by diagnostics.
unsigned getAddressSpaceAttributePrintValue() const {
  auto Addr = getAddressSpace();
  // This function is not supposed to be used with language specific
  // address spaces. If that happens, the diagnostic message should consider
  // printing the QualType instead of the address space value.
  assert(Addr == LangAS::Default || hasTargetSpecificAddressSpace())((Addr == LangAS::Default || hasTargetSpecificAddressSpace())
 ? static_cast<void> (0) : __assert_fail ("Addr == LangAS::Default || hasTargetSpecificAddressSpace()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 372, __PRETTY_FUNCTION__));
  if (Addr != LangAS::Default)
    return toTargetAddressSpace(Addr);
  // TODO: The diagnostic messages where Addr may be 0 should be fixed
  // since it cannot differentiate the situation where 0 denotes the default
  // address space or user specified __attribute__((address_space(0))).
  return 0;
}
void setAddressSpace(LangAS space) {
  assert((unsigned)space <= MaxAddressSpace)(((unsigned)space <= MaxAddressSpace) ? static_cast<void
> (0) : __assert_fail ("(unsigned)space <= MaxAddressSpace"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 381, __PRETTY_FUNCTION__));
  Mask = (Mask & ~AddressSpaceMask)
       | (((uint32_t) space) << AddressSpaceShift);
}
void removeAddressSpace() { setAddressSpace(LangAS::Default); }
void addAddressSpace(LangAS space) {
  assert(space != LangAS::Default)((space != LangAS::Default) ? static_cast<void> (0) : __assert_fail
 ("space != LangAS::Default", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 387, __PRETTY_FUNCTION__));
  setAddressSpace(space);
}

// Fast qualifiers are those that can be allocated directly
// on a QualType object.
bool hasFastQualifiers() const { return getFastQualifiers(); }
unsigned getFastQualifiers() const { return Mask & FastMask; }
void setFastQualifiers(unsigned mask) {
  assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits"
) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 396, __PRETTY_FUNCTION__));
  Mask = (Mask & ~FastMask) | mask;
}
void removeFastQualifiers(unsigned mask) {
  assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits"
) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 400, __PRETTY_FUNCTION__));
  Mask &= ~mask;
}
void removeFastQualifiers() {
  removeFastQualifiers(FastMask);
}
void addFastQualifiers(unsigned mask) {
  assert(!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits")((!(mask & ~FastMask) && "bitmask contains non-fast qualifier bits"
) ? static_cast<void> (0) : __assert_fail ("!(mask & ~FastMask) && \"bitmask contains non-fast qualifier bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 407, __PRETTY_FUNCTION__));
  Mask |= mask;
}

/// Return true if the set contains any qualifiers which require an ExtQuals
/// node to be allocated.
bool hasNonFastQualifiers() const { return Mask & ~FastMask; }
Qualifiers getNonFastQualifiers() const {
  Qualifiers Quals = *this;
  Quals.setFastQualifiers(0);
  return Quals;
}

/// Return true if the set contains any qualifiers.
bool hasQualifiers() const { return Mask; }
bool empty() const { return !Mask; }

/// Add the qualifiers from the given set to this set.
void addQualifiers(Qualifiers Q) {
  // If the other set doesn't have any non-boolean qualifiers, just
  // bit-or it in.
  if (!(Q.Mask & ~CVRMask))
    Mask |= Q.Mask;
  else {
    Mask |= (Q.Mask & CVRMask);
    if (Q.hasAddressSpace())
      addAddressSpace(Q.getAddressSpace());
    if (Q.hasObjCGCAttr())
      addObjCGCAttr(Q.getObjCGCAttr());
    if (Q.hasObjCLifetime())
      addObjCLifetime(Q.getObjCLifetime());
  }
}

/// Remove the qualifiers from the given set from this set.
void removeQualifiers(Qualifiers Q) {
  // If the other set doesn't have any non-boolean qualifiers, just
  // bit-and the inverse in.
  if (!(Q.Mask & ~CVRMask))
    Mask &= ~Q.Mask;
  else {
    Mask &= ~(Q.Mask & CVRMask);
    if (getObjCGCAttr() == Q.getObjCGCAttr())
      removeObjCGCAttr();
    if (getObjCLifetime() == Q.getObjCLifetime())
      removeObjCLifetime();
    if (getAddressSpace() == Q.getAddressSpace())
      removeAddressSpace();
  }
}

/// Add the qualifiers from the given set to this set, given that
/// they don't conflict.
void addConsistentQualifiers(Qualifiers qs) {
  assert(getAddressSpace() == qs.getAddressSpace() ||((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace
() || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail
 ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 462, __PRETTY_FUNCTION__))
         !hasAddressSpace() || !qs.hasAddressSpace())((getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace
() || !qs.hasAddressSpace()) ? static_cast<void> (0) : __assert_fail
 ("getAddressSpace() == qs.getAddressSpace() || !hasAddressSpace() || !qs.hasAddressSpace()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 462, __PRETTY_FUNCTION__));
  assert(getObjCGCAttr() == qs.getObjCGCAttr() ||((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() ||
 !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail
 ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 464, __PRETTY_FUNCTION__))
         !hasObjCGCAttr() || !qs.hasObjCGCAttr())((getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() ||
 !qs.hasObjCGCAttr()) ? static_cast<void> (0) : __assert_fail
 ("getObjCGCAttr() == qs.getObjCGCAttr() || !hasObjCGCAttr() || !qs.hasObjCGCAttr()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 464, __PRETTY_FUNCTION__));
  assert(getObjCLifetime() == qs.getObjCLifetime() ||((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime
() || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail
 ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 466, __PRETTY_FUNCTION__))
         !hasObjCLifetime() || !qs.hasObjCLifetime())((getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime
() || !qs.hasObjCLifetime()) ? static_cast<void> (0) : __assert_fail
 ("getObjCLifetime() == qs.getObjCLifetime() || !hasObjCLifetime() || !qs.hasObjCLifetime()"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 466, __PRETTY_FUNCTION__));
  Mask |= qs.Mask;
}

/// Returns true if address space A is equal to or a superset of B.
/// OpenCL v2.0 defines conversion rules (OpenCLC v2.0 s6.5.5) and notion of
/// overlapping address spaces.
/// CL1.1 or CL1.2:
///   every address space is a superset of itself.
/// CL2.0 adds:
///   __generic is a superset of any address space except for __constant.
static bool isAddressSpaceSupersetOf(LangAS A, LangAS B) {
  // Address spaces must match exactly.
  return A == B ||
         // Otherwise in OpenCLC v2.0 s6.5.5: every address space except
         // for __constant can be used as __generic.
         (A == LangAS::opencl_generic && B != LangAS::opencl_constant) ||
         // Consider pointer size address spaces to be equivalent to default.
         ((isPtrSizeAddressSpace(A) || A == LangAS::Default) &&
          (isPtrSizeAddressSpace(B) || B == LangAS::Default));
}

/// Returns true if the address space in these qualifiers is equal to or
/// a superset of the address space in the argument qualifiers.
bool isAddressSpaceSupersetOf(Qualifiers other) const {
  return isAddressSpaceSupersetOf(getAddressSpace(), other.getAddressSpace());
}

/// Determines if these qualifiers compatibly include another set.
/// Generally this answers the question of whether an object with the other
/// qualifiers can be safely used as an object with these qualifiers.
bool compatiblyIncludes(Qualifiers other) const {
  return isAddressSpaceSupersetOf(other) &&
         // ObjC GC qualifiers can match, be added, or be removed, but can't
         // be changed.
         (getObjCGCAttr() == other.getObjCGCAttr() || !hasObjCGCAttr() ||
          !other.hasObjCGCAttr()) &&
         // ObjC lifetime qualifiers must match exactly.
         getObjCLifetime() == other.getObjCLifetime() &&
         // CVR qualifiers may subset.
         (((Mask & CVRMask) | (other.Mask & CVRMask)) == (Mask & CVRMask)) &&
         // U qualifier may superset.
         (!other.hasUnaligned() || hasUnaligned());
}

/// Determines if these qualifiers compatibly include another set of
/// qualifiers from the narrow perspective of Objective-C ARC lifetime.
///
/// One set of Objective-C lifetime qualifiers compatibly includes the other
/// if the lifetime qualifiers match, or if both are non-__weak and the
/// including set also contains the 'const' qualifier, or both are non-__weak
/// and one is None (which can only happen in non-ARC modes).
bool compatiblyIncludesObjCLifetime(Qualifiers other) const {
  if (getObjCLifetime() == other.getObjCLifetime())
    return true;

  if (getObjCLifetime() == OCL_Weak || other.getObjCLifetime() == OCL_Weak)
    return false;

  if (getObjCLifetime() == OCL_None || other.getObjCLifetime() == OCL_None)
    return true;

  return hasConst();
}

/// Determine whether this set of qualifiers is a strict superset of
/// another set of qualifiers, not considering qualifier compatibility.
bool isStrictSupersetOf(Qualifiers Other) const;

bool operator==(Qualifiers Other) const { return Mask == Other.Mask; }
bool operator!=(Qualifiers Other) const { return Mask != Other.Mask; }

explicit operator bool() const { return hasQualifiers(); }

Qualifiers &operator+=(Qualifiers R) {
  addQualifiers(R);
  return *this;
}

// Union two qualifier sets.  If an enumerated qualifier appears
// in both sets, use the one from the right.
friend Qualifiers operator+(Qualifiers L, Qualifiers R) {
  L += R;
  return L;
}

Qualifiers &operator-=(Qualifiers R) {
  removeQualifiers(R);
  return *this;
}

/// Compute the difference between two qualifier sets.
friend Qualifiers operator-(Qualifiers L, Qualifiers R) {
  L -= R;
  return L;
}

std::string getAsString() const;
std::string getAsString(const PrintingPolicy &Policy) const;

static std::string getAddrSpaceAsString(LangAS AS);

bool isEmptyWhenPrinted(const PrintingPolicy &Policy) const;
void print(raw_ostream &OS, const PrintingPolicy &Policy,
           bool appendSpaceIfNonEmpty = false) const;

void Profile(llvm::FoldingSetNodeID &ID) const {
  ID.AddInteger(Mask);
}

576private:
// bits:     |0 1 2|3|4 .. 5|6  ..  8|9   ...   31|
//           |C R V|U|GCAttr|Lifetime|AddressSpace|
uint32_t Mask = 0;

static const uint32_t UMask = 0x8;
static const uint32_t UShift = 3;
static const uint32_t GCAttrMask = 0x30;
static const uint32_t GCAttrShift = 4;
static const uint32_t LifetimeMask = 0x1C0;
static const uint32_t LifetimeShift = 6;
static const uint32_t AddressSpaceMask =
    ~(CVRMask | UMask | GCAttrMask | LifetimeMask);
static const uint32_t AddressSpaceShift = 9;
590};

592/// A std::pair-like structure for storing a qualified type split
593/// into its local qualifiers and its locally-unqualified type.
594struct SplitQualType {
/// The locally-unqualified type.
const Type *Ty = nullptr;

/// The local qualifiers.
Qualifiers Quals;

SplitQualType() = default;
SplitQualType(const Type *ty, Qualifiers qs) : Ty(ty), Quals(qs) {}

SplitQualType getSingleStepDesugaredType() const; // end of this file

// Make std::tie work.
std::pair<const Type *,Qualifiers> asPair() const {
  return std::pair<const Type *, Qualifiers>(Ty, Quals);
}

friend bool operator==(SplitQualType a, SplitQualType b) {
  return a.Ty == b.Ty && a.Quals == b.Quals;
}
friend bool operator!=(SplitQualType a, SplitQualType b) {
  return a.Ty != b.Ty || a.Quals != b.Quals;
}
617};

619/// The kind of type we are substituting Objective-C type arguments into.
620///
621/// The kind of substitution affects the replacement of type parameters when
622/// no concrete type information is provided, e.g., when dealing with an
623/// unspecialized type.
624enum class ObjCSubstitutionContext {
/// An ordinary type.
Ordinary,

/// The result type of a method or function.
Result,

/// The parameter type of a method or function.
Parameter,

/// The type of a property.
Property,

/// The superclass of a type.
Superclass,
639};

641/// A (possibly-)qualified type.
642///
643/// For efficiency, we don't store CV-qualified types as nodes on their
644/// own: instead each reference to a type stores the qualifiers.  This
645/// greatly reduces the number of nodes we need to allocate for types (for
646/// example we only need one for 'int', 'const int', 'volatile int',
647/// 'const volatile int', etc).
648///
649/// As an added efficiency bonus, instead of making this a pair, we
650/// just store the two bits we care about in the low bits of the
651/// pointer.  To handle the packing/unpacking, we make QualType be a
652/// simple wrapper class that acts like a smart pointer.  A third bit
653/// indicates whether there are extended qualifiers present, in which
654/// case the pointer points to a special structure.
655class QualType {
friend class QualifierCollector;

// Thankfully, these are efficiently composable.
llvm::PointerIntPair<llvm::PointerUnion<const Type *, const ExtQuals *>,
                     Qualifiers::FastWidth> Value;

const ExtQuals *getExtQualsUnsafe() const {
  return Value.getPointer().get<const ExtQuals*>();
}

const Type *getTypePtrUnsafe() const {
  return Value.getPointer().get<const Type*>();
}

const ExtQualsTypeCommonBase *getCommonPtr() const {
  assert(!isNull() && "Cannot retrieve a NULL type pointer")((!isNull() && "Cannot retrieve a NULL type pointer")
 ? static_cast<void> (0) : __assert_fail ("!isNull() && \"Cannot retrieve a NULL type pointer\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 671, __PRETTY_FUNCTION__));
  auto CommonPtrVal = reinterpret_cast<uintptr_t>(Value.getOpaqueValue());
  CommonPtrVal &= ~(uintptr_t)((1 << TypeAlignmentInBits) - 1);
  return reinterpret_cast<ExtQualsTypeCommonBase*>(CommonPtrVal);
}

677public:
QualType() = default;
QualType(const Type *Ptr, unsigned Quals) : Value(Ptr, Quals) {}
QualType(const ExtQuals *Ptr, unsigned Quals) : Value(Ptr, Quals) {}

unsigned getLocalFastQualifiers() const { return Value.getInt(); }
void setLocalFastQualifiers(unsigned Quals) { Value.setInt(Quals); }

/// Retrieves a pointer to the underlying (unqualified) type.
///
/// This function requires that the type not be NULL. If the type might be
/// NULL, use the (slightly less efficient) \c getTypePtrOrNull().
const Type *getTypePtr() const;

const Type *getTypePtrOrNull() const;

/// Retrieves a pointer to the name of the base type.
const IdentifierInfo *getBaseTypeIdentifier() const;

/// Divides a QualType into its unqualified type and a set of local
/// qualifiers.
SplitQualType split() const;

void *getAsOpaquePtr() const { return Value.getOpaqueValue(); }

static QualType getFromOpaquePtr(const void *Ptr) {
  QualType T;
  T.Value.setFromOpaqueValue(const_cast<void*>(Ptr));
  return T;
}

const Type &operator*() const {
  return *getTypePtr();
}

const Type *operator->() const {
  return getTypePtr();
}

bool isCanonical() const;
bool isCanonicalAsParam() const;

/// Return true if this QualType doesn't point to a type yet.
bool isNull() const {
  return Value.getPointer().isNull();
}

/// Determine whether this particular QualType instance has the
/// "const" qualifier set, without looking through typedefs that may have
/// added "const" at a different level.
bool isLocalConstQualified() const {
  return (getLocalFastQualifiers() & Qualifiers::Const);
}

/// Determine whether this type is const-qualified.
bool isConstQualified() const;

/// Determine whether this particular QualType instance has the
/// "restrict" qualifier set, without looking through typedefs that may have
/// added "restrict" at a different level.
bool isLocalRestrictQualified() const {
  return (getLocalFastQualifiers() & Qualifiers::Restrict);
}

/// Determine whether this type is restrict-qualified.
bool isRestrictQualified() const;

/// Determine whether this particular QualType instance has the
/// "volatile" qualifier set, without looking through typedefs that may have
/// added "volatile" at a different level.
bool isLocalVolatileQualified() const {
  return (getLocalFastQualifiers() & Qualifiers::Volatile);
}

/// Determine whether this type is volatile-qualified.
bool isVolatileQualified() const;

/// Determine whether this particular QualType instance has any
/// qualifiers, without looking through any typedefs that might add
/// qualifiers at a different level.
bool hasLocalQualifiers() const {
  return getLocalFastQualifiers() || hasLocalNonFastQualifiers();
}

/// Determine whether this type has any qualifiers.
bool hasQualifiers() const;

/// Determine whether this particular QualType instance has any
/// "non-fast" qualifiers, e.g., those that are stored in an ExtQualType
/// instance.
bool hasLocalNonFastQualifiers() const {
  return Value.getPointer().is<const ExtQuals*>();
}

/// Retrieve the set of qualifiers local to this particular QualType
/// instance, not including any qualifiers acquired through typedefs or
/// other sugar.
Qualifiers getLocalQualifiers() const;

/// Retrieve the set of qualifiers applied to this type.
Qualifiers getQualifiers() const;

/// Retrieve the set of CVR (const-volatile-restrict) qualifiers
/// local to this particular QualType instance, not including any qualifiers
/// acquired through typedefs or other sugar.
unsigned getLocalCVRQualifiers() const {
  return getLocalFastQualifiers();
}

/// Retrieve the set of CVR (const-volatile-restrict) qualifiers
/// applied to this type.
unsigned getCVRQualifiers() const;

bool isConstant(const ASTContext& Ctx) const {
  return QualType::isConstant(*this, Ctx);
}

/// Determine whether this is a Plain Old Data (POD) type (C++ 3.9p10).
bool isPODType(const ASTContext &Context) const;

/// Return true if this is a POD type according to the rules of the C++98
/// standard, regardless of the current compilation's language.
bool isCXX98PODType(const ASTContext &Context) const;

/// Return true if this is a POD type according to the more relaxed rules
/// of the C++11 standard, regardless of the current compilation's language.
/// (C++0x [basic.types]p9). Note that, unlike
/// CXXRecordDecl::isCXX11StandardLayout, this takes DRs into account.
bool isCXX11PODType(const ASTContext &Context) const;

/// Return true if this is a trivial type per (C++0x [basic.types]p9)
bool isTrivialType(const ASTContext &Context) const;

/// Return true if this is a trivially copyable type (C++0x [basic.types]p9)
bool isTriviallyCopyableType(const ASTContext &Context) const;


/// Returns true if it is a class and it might be dynamic.
bool mayBeDynamicClass() const;

/// Returns true if it is not a class or if the class might not be dynamic.
bool mayBeNotDynamicClass() const;

// Don't promise in the API that anything besides 'const' can be
// easily added.

/// Add the `const` type qualifier to this QualType.
void addConst() {
  addFastQualifiers(Qualifiers::Const);
}
QualType withConst() const {
  return withFastQualifiers(Qualifiers::Const);
}

/// Add the `volatile` type qualifier to this QualType.
void addVolatile() {
  addFastQualifiers(Qualifiers::Volatile);
}
QualType withVolatile() const {
  return withFastQualifiers(Qualifiers::Volatile);
}

/// Add the `restrict` qualifier to this QualType.
void addRestrict() {
  addFastQualifiers(Qualifiers::Restrict);
}
QualType withRestrict() const {
  return withFastQualifiers(Qualifiers::Restrict);
}

QualType withCVRQualifiers(unsigned CVR) const {
  return withFastQualifiers(CVR);
}

void addFastQualifiers(unsigned TQs) {
  assert(!(TQs & ~Qualifiers::FastMask)((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!"
) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 853, __PRETTY_FUNCTION__))
         && "non-fast qualifier bits set in mask!")((!(TQs & ~Qualifiers::FastMask) && "non-fast qualifier bits set in mask!"
) ? static_cast<void> (0) : __assert_fail ("!(TQs & ~Qualifiers::FastMask) && \"non-fast qualifier bits set in mask!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 853, __PRETTY_FUNCTION__));
  Value.setInt(Value.getInt() | TQs);
}

void removeLocalConst();
void removeLocalVolatile();
void removeLocalRestrict();
void removeLocalCVRQualifiers(unsigned Mask);

void removeLocalFastQualifiers() { Value.setInt(0); }
void removeLocalFastQualifiers(unsigned Mask) {
  assert(!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers")((!(Mask & ~Qualifiers::FastMask) && "mask has non-fast qualifiers"
) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::FastMask) && \"mask has non-fast qualifiers\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 864, __PRETTY_FUNCTION__));
  Value.setInt(Value.getInt() & ~Mask);
}

// Creates a type with the given qualifiers in addition to any
// qualifiers already on this type.
QualType withFastQualifiers(unsigned TQs) const {
  QualType T = *this;
  T.addFastQualifiers(TQs);
  return T;
}

// Creates a type with exactly the given fast qualifiers, removing
// any existing fast qualifiers.
QualType withExactLocalFastQualifiers(unsigned TQs) const {
  return withoutLocalFastQualifiers().withFastQualifiers(TQs);
}

// Removes fast qualifiers, but leaves any extended qualifiers in place.
QualType withoutLocalFastQualifiers() const {
  QualType T = *this;
  T.removeLocalFastQualifiers();
  return T;
}

QualType getCanonicalType() const;

/// Return this type with all of the instance-specific qualifiers
/// removed, but without removing any qualifiers that may have been applied
/// through typedefs.
QualType getLocalUnqualifiedType() const { return QualType(getTypePtr(), 0); }

/// Retrieve the unqualified variant of the given type,
/// removing as little sugar as possible.
///
/// This routine looks through various kinds of sugar to find the
/// least-desugared type that is unqualified. For example, given:
///
/// \code
/// typedef int Integer;
/// typedef const Integer CInteger;
/// typedef CInteger DifferenceType;
/// \endcode
///
/// Executing \c getUnqualifiedType() on the type \c DifferenceType will
/// desugar until we hit the type \c Integer, which has no qualifiers on it.
///
/// The resulting type might still be qualified if it's sugar for an array
/// type.  To strip qualifiers even from within a sugared array type, use
/// ASTContext::getUnqualifiedArrayType.
inline QualType getUnqualifiedType() const;

/// Retrieve the unqualified variant of the given type, removing as little
/// sugar as possible.
///
/// Like getUnqualifiedType(), but also returns the set of
/// qualifiers that were built up.
///
/// The resulting type might still be qualified if it's sugar for an array
/// type.  To strip qualifiers even from within a sugared array type, use
/// ASTContext::getUnqualifiedArrayType.
inline SplitQualType getSplitUnqualifiedType() const;

/// Determine whether this type is more qualified than the other
/// given type, requiring exact equality for non-CVR qualifiers.
bool isMoreQualifiedThan(QualType Other) const;

/// Determine whether this type is at least as qualified as the other
/// given type, requiring exact equality for non-CVR qualifiers.
bool isAtLeastAsQualifiedAs(QualType Other) const;

QualType getNonReferenceType() const;

/// Determine the type of a (typically non-lvalue) expression with the
/// specified result type.
///
/// This routine should be used for expressions for which the return type is
/// explicitly specified (e.g., in a cast or call) and isn't necessarily
/// an lvalue. It removes a top-level reference (since there are no
/// expressions of reference type) and deletes top-level cvr-qualifiers
/// from non-class types (in C++) or all types (in C).
QualType getNonLValueExprType(const ASTContext &Context) const;

/// Return the specified type with any "sugar" removed from
/// the type.  This takes off typedefs, typeof's etc.  If the outer level of
/// the type is already concrete, it returns it unmodified.  This is similar
/// to getting the canonical type, but it doesn't remove *all* typedefs.  For
/// example, it returns "T*" as "T*", (not as "int*"), because the pointer is
/// concrete.
///
/// Qualifiers are left in place.
QualType getDesugaredType(const ASTContext &Context) const {
  return getDesugaredType(*this, Context);
}

SplitQualType getSplitDesugaredType() const {
  return getSplitDesugaredType(*this);
}

/// Return the specified type with one level of "sugar" removed from
/// the type.
///
/// This routine takes off the first typedef, typeof, etc. If the outer level
/// of the type is already concrete, it returns it unmodified.
QualType getSingleStepDesugaredType(const ASTContext &Context) const {
  return getSingleStepDesugaredTypeImpl(*this, Context);
}

/// Returns the specified type after dropping any
/// outer-level parentheses.
QualType IgnoreParens() const {
  if (isa<ParenType>(*this))
    return QualType::IgnoreParens(*this);
  return *this;
}

/// Indicate whether the specified types and qualifiers are identical.
friend bool operator==(const QualType &LHS, const QualType &RHS) {
  return LHS.Value == RHS.Value;
}
friend bool operator!=(const QualType &LHS, const QualType &RHS) {
  return LHS.Value != RHS.Value;
}
friend bool operator<(const QualType &LHS, const QualType &RHS) {
  return LHS.Value < RHS.Value;
}

static std::string getAsString(SplitQualType split,
                               const PrintingPolicy &Policy) {
  return getAsString(split.Ty, split.Quals, Policy);
}
static std::string getAsString(const Type *ty, Qualifiers qs,
                               const PrintingPolicy &Policy);

std::string getAsString() const;
std::string getAsString(const PrintingPolicy &Policy) const;

void print(raw_ostream &OS, const PrintingPolicy &Policy,
           const Twine &PlaceHolder = Twine(),
           unsigned Indentation = 0) const;

static void print(SplitQualType split, raw_ostream &OS,
                  const PrintingPolicy &policy, const Twine &PlaceHolder,
                  unsigned Indentation = 0) {
  return print(split.Ty, split.Quals, OS, policy, PlaceHolder, Indentation);
}

static void print(const Type *ty, Qualifiers qs,
                  raw_ostream &OS, const PrintingPolicy &policy,
                  const Twine &PlaceHolder,
                  unsigned Indentation = 0);

void getAsStringInternal(std::string &Str,
                         const PrintingPolicy &Policy) const;

static void getAsStringInternal(SplitQualType split, std::string &out,
                                const PrintingPolicy &policy) {
  return getAsStringInternal(split.Ty, split.Quals, out, policy);
}

static void getAsStringInternal(const Type *ty, Qualifiers qs,
                                std::string &out,
                                const PrintingPolicy &policy);

class StreamedQualTypeHelper {
  const QualType &T;
  const PrintingPolicy &Policy;
  const Twine &PlaceHolder;
  unsigned Indentation;

public:
  StreamedQualTypeHelper(const QualType &T, const PrintingPolicy &Policy,
                         const Twine &PlaceHolder, unsigned Indentation)
      : T(T), Policy(Policy), PlaceHolder(PlaceHolder),
        Indentation(Indentation) {}

  friend raw_ostream &operator<<(raw_ostream &OS,
                                 const StreamedQualTypeHelper &SQT) {
    SQT.T.print(OS, SQT.Policy, SQT.PlaceHolder, SQT.Indentation);
    return OS;
  }
};

StreamedQualTypeHelper stream(const PrintingPolicy &Policy,
                              const Twine &PlaceHolder = Twine(),
                              unsigned Indentation = 0) const {
  return StreamedQualTypeHelper(*this, Policy, PlaceHolder, Indentation);
}

void dump(const char *s) const;
void dump() const;
void dump(llvm::raw_ostream &OS) const;

void Profile(llvm::FoldingSetNodeID &ID) const {
  ID.AddPointer(getAsOpaquePtr());
}

/// Check if this type has any address space qualifier.
inline bool hasAddressSpace() const;

/// Return the address space of this type.
inline LangAS getAddressSpace() const;

/// Returns gc attribute of this type.
inline Qualifiers::GC getObjCGCAttr() const;

/// true when Type is objc's weak.
bool isObjCGCWeak() const {
  return getObjCGCAttr() == Qualifiers::Weak;
}

/// true when Type is objc's strong.
bool isObjCGCStrong() const {
  return getObjCGCAttr() == Qualifiers::Strong;
}

/// Returns lifetime attribute of this type.
Qualifiers::ObjCLifetime getObjCLifetime() const {
  return getQualifiers().getObjCLifetime();
}

bool hasNonTrivialObjCLifetime() const {
  return getQualifiers().hasNonTrivialObjCLifetime();
}

bool hasStrongOrWeakObjCLifetime() const {
  return getQualifiers().hasStrongOrWeakObjCLifetime();
}

// true when Type is objc's weak and weak is enabled but ARC isn't.
bool isNonWeakInMRRWithObjCWeak(const ASTContext &Context) const;

enum PrimitiveDefaultInitializeKind {
  /// The type does not fall into any of the following categories. Note that
  /// this case is zero-valued so that values of this enum can be used as a
  /// boolean condition for non-triviality.
  PDIK_Trivial,

  /// The type is an Objective-C retainable pointer type that is qualified
  /// with the ARC __strong qualifier.
  PDIK_ARCStrong,

  /// The type is an Objective-C retainable pointer type that is qualified
  /// with the ARC __weak qualifier.
  PDIK_ARCWeak,

  /// The type is a struct containing a field whose type is not PCK_Trivial.
  PDIK_Struct
};

/// Functions to query basic properties of non-trivial C struct types.

/// Check if this is a non-trivial type that would cause a C struct
/// transitively containing this type to be non-trivial to default initialize
/// and return the kind.
PrimitiveDefaultInitializeKind
isNonTrivialToPrimitiveDefaultInitialize() const;

enum PrimitiveCopyKind {
  /// The type does not fall into any of the following categories. Note that
  /// this case is zero-valued so that values of this enum can be used as a
  /// boolean condition for non-triviality.
  PCK_Trivial,

  /// The type would be trivial except that it is volatile-qualified. Types
  /// that fall into one of the other non-trivial cases may additionally be
  /// volatile-qualified.
  PCK_VolatileTrivial,

  /// The type is an Objective-C retainable pointer type that is qualified
  /// with the ARC __strong qualifier.
  PCK_ARCStrong,

  /// The type is an Objective-C retainable pointer type that is qualified
  /// with the ARC __weak qualifier.
  PCK_ARCWeak,

  /// The type is a struct containing a field whose type is neither
  /// PCK_Trivial nor PCK_VolatileTrivial.
  /// Note that a C++ struct type does not necessarily match this; C++ copying
  /// semantics are too complex to express here, in part because they depend
  /// on the exact constructor or assignment operator that is chosen by
  /// overload resolution to do the copy.
  PCK_Struct
};

/// Check if this is a non-trivial type that would cause a C struct
/// transitively containing this type to be non-trivial to copy and return the
/// kind.
PrimitiveCopyKind isNonTrivialToPrimitiveCopy() const;

/// Check if this is a non-trivial type that would cause a C struct
/// transitively containing this type to be non-trivial to destructively
/// move and return the kind. Destructive move in this context is a C++-style
/// move in which the source object is placed in a valid but unspecified state
/// after it is moved, as opposed to a truly destructive move in which the
/// source object is placed in an uninitialized state.
PrimitiveCopyKind isNonTrivialToPrimitiveDestructiveMove() const;

enum DestructionKind {
  DK_none,
  DK_cxx_destructor,
  DK_objc_strong_lifetime,
  DK_objc_weak_lifetime,
  DK_nontrivial_c_struct
};

/// Returns a nonzero value if objects of this type require
/// non-trivial work to clean up after.  Non-zero because it's
/// conceivable that qualifiers (objc_gc(weak)?) could make
/// something require destruction.
DestructionKind isDestructedType() const {
  return isDestructedTypeImpl(*this);
}

/// Check if this is or contains a C union that is non-trivial to
/// default-initialize, which is a union that has a member that is non-trivial
/// to default-initialize. If this returns true,
/// isNonTrivialToPrimitiveDefaultInitialize returns PDIK_Struct.
bool hasNonTrivialToPrimitiveDefaultInitializeCUnion() const;

/// Check if this is or contains a C union that is non-trivial to destruct,
/// which is a union that has a member that is non-trivial to destruct. If
/// this returns true, isDestructedType returns DK_nontrivial_c_struct.
bool hasNonTrivialToPrimitiveDestructCUnion() const;

/// Check if this is or contains a C union that is non-trivial to copy, which
/// is a union that has a member that is non-trivial to copy. If this returns
/// true, isNonTrivialToPrimitiveCopy returns PCK_Struct.
bool hasNonTrivialToPrimitiveCopyCUnion() const;

/// Determine whether expressions of the given type are forbidden
/// from being lvalues in C.
///
/// The expression types that are forbidden to be lvalues are:
///   - 'void', but not qualified void
///   - function types
///
/// The exact rule here is C99 6.3.2.1:
///   An lvalue is an expression with an object type or an incomplete
///   type other than void.
bool isCForbiddenLValueType() const;

/// Substitute type arguments for the Objective-C type parameters used in the
/// subject type.
///
/// \param ctx ASTContext in which the type exists.
///
/// \param typeArgs The type arguments that will be substituted for the
/// Objective-C type parameters in the subject type, which are generally
/// computed via \c Type::getObjCSubstitutions. If empty, the type
/// parameters will be replaced with their bounds or id/Class, as appropriate
/// for the context.
///
/// \param context The context in which the subject type was written.
///
/// \returns the resulting type.
QualType substObjCTypeArgs(ASTContext &ctx,
                           ArrayRef<QualType> typeArgs,
                           ObjCSubstitutionContext context) const;

/// Substitute type arguments from an object type for the Objective-C type
/// parameters used in the subject type.
///
/// This operation combines the computation of type arguments for
/// substitution (\c Type::getObjCSubstitutions) with the actual process of
/// substitution (\c QualType::substObjCTypeArgs) for the convenience of
/// callers that need to perform a single substitution in isolation.
///
/// \param objectType The type of the object whose member type we're
/// substituting into. For example, this might be the receiver of a message
/// or the base of a property access.
///
/// \param dc The declaration context from which the subject type was
/// retrieved, which indicates (for example) which type parameters should
/// be substituted.
///
/// \param context The context in which the subject type was written.
///
/// \returns the subject type after replacing all of the Objective-C type
/// parameters with their corresponding arguments.
QualType substObjCMemberType(QualType objectType,
                             const DeclContext *dc,
                             ObjCSubstitutionContext context) const;

/// Strip Objective-C "__kindof" types from the given type.
QualType stripObjCKindOfType(const ASTContext &ctx) const;

/// Remove all qualifiers including _Atomic.
QualType getAtomicUnqualifiedType() const;

1255private:
// These methods are implemented in a separate translation unit;
// "static"-ize them to avoid creating temporary QualTypes in the
// caller.
static bool isConstant(QualType T, const ASTContext& Ctx);
static QualType getDesugaredType(QualType T, const ASTContext &Context);
static SplitQualType getSplitDesugaredType(QualType T);
static SplitQualType getSplitUnqualifiedTypeImpl(QualType type);
static QualType getSingleStepDesugaredTypeImpl(QualType type,
                                               const ASTContext &C);
static QualType IgnoreParens(QualType T);
static DestructionKind isDestructedTypeImpl(QualType type);

/// Check if \param RD is or contains a non-trivial C union.
static bool hasNonTrivialToPrimitiveDefaultInitializeCUnion(const RecordDecl *RD);
static bool hasNonTrivialToPrimitiveDestructCUnion(const RecordDecl *RD);
static bool hasNonTrivialToPrimitiveCopyCUnion(const RecordDecl *RD);
1272};

1274} // namespace clang

1276namespace llvm {

1278/// Implement simplify_type for QualType, so that we can dyn_cast from QualType
1279/// to a specific Type class.
1280template<> struct simplify_type< ::clang::QualType> {
using SimpleType = const ::clang::Type *;

static SimpleType getSimplifiedValue(::clang::QualType Val) {
  return Val.getTypePtr();
}
1286};

1288// Teach SmallPtrSet that QualType is "basically a pointer".
1289template<>
1290struct PointerLikeTypeTraits<clang::QualType> {
static inline void *getAsVoidPointer(clang::QualType P) {
  return P.getAsOpaquePtr();
}

static inline clang::QualType getFromVoidPointer(void *P) {
  return clang::QualType::getFromOpaquePtr(P);
}

// Various qualifiers go in low bits.
static constexpr int NumLowBitsAvailable = 0;
1301};

1303} // namespace llvm

1305namespace clang {

1307/// Base class that is common to both the \c ExtQuals and \c Type
1308/// classes, which allows \c QualType to access the common fields between the
1309/// two.
1310class ExtQualsTypeCommonBase {
friend class ExtQuals;
friend class QualType;
friend class Type;

/// The "base" type of an extended qualifiers type (\c ExtQuals) or
/// a self-referential pointer (for \c Type).
///
/// This pointer allows an efficient mapping from a QualType to its
/// underlying type pointer.
const Type *const BaseType;

/// The canonical type of this type.  A QualType.
QualType CanonicalType;

ExtQualsTypeCommonBase(const Type *baseType, QualType canon)
    : BaseType(baseType), CanonicalType(canon) {}
1327};

1329/// We can encode up to four bits in the low bits of a
1330/// type pointer, but there are many more type qualifiers that we want
1331/// to be able to apply to an arbitrary type.  Therefore we have this
1332/// struct, intended to be heap-allocated and used by QualType to
1333/// store qualifiers.
1334///
1335/// The current design tags the 'const', 'restrict', and 'volatile' qualifiers
1336/// in three low bits on the QualType pointer; a fourth bit records whether
1337/// the pointer is an ExtQuals node. The extended qualifiers (address spaces,
1338/// Objective-C GC attributes) are much more rare.
1339class ExtQuals : public ExtQualsTypeCommonBase, public llvm::FoldingSetNode {
// NOTE: changing the fast qualifiers should be straightforward as
// long as you don't make 'const' non-fast.
// 1. Qualifiers:
//    a) Modify the bitmasks (Qualifiers::TQ and DeclSpec::TQ).
//       Fast qualifiers must occupy the low-order bits.
//    b) Update Qualifiers::FastWidth and FastMask.
// 2. QualType:
//    a) Update is{Volatile,Restrict}Qualified(), defined inline.
//    b) Update remove{Volatile,Restrict}, defined near the end of
//       this header.
// 3. ASTContext:
//    a) Update get{Volatile,Restrict}Type.

/// The immutable set of qualifiers applied by this node. Always contains
/// extended qualifiers.
Qualifiers Quals;

ExtQuals *this_() { return this; }

1359public:
ExtQuals(const Type *baseType, QualType canon, Qualifiers quals)
    : ExtQualsTypeCommonBase(baseType,
                             canon.isNull() ? QualType(this_(), 0) : canon),
      Quals(quals) {
  assert(Quals.hasNonFastQualifiers()((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers"
) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 1365, __PRETTY_FUNCTION__))
         && "ExtQuals created with no fast qualifiers")((Quals.hasNonFastQualifiers() && "ExtQuals created with no fast qualifiers"
) ? static_cast<void> (0) : __assert_fail ("Quals.hasNonFastQualifiers() && \"ExtQuals created with no fast qualifiers\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 1365, __PRETTY_FUNCTION__));
  assert(!Quals.hasFastQualifiers()((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers"
) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 1367, __PRETTY_FUNCTION__))
         && "ExtQuals created with fast qualifiers")((!Quals.hasFastQualifiers() && "ExtQuals created with fast qualifiers"
) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"ExtQuals created with fast qualifiers\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 1367, __PRETTY_FUNCTION__));
}

Qualifiers getQualifiers() const { return Quals; }

bool hasObjCGCAttr() const { return Quals.hasObjCGCAttr(); }
Qualifiers::GC getObjCGCAttr() const { return Quals.getObjCGCAttr(); }

bool hasObjCLifetime() const { return Quals.hasObjCLifetime(); }
Qualifiers::ObjCLifetime getObjCLifetime() const {
  return Quals.getObjCLifetime();
}

bool hasAddressSpace() const { return Quals.hasAddressSpace(); }
LangAS getAddressSpace() const { return Quals.getAddressSpace(); }

const Type *getBaseType() const { return BaseType; }

1385public:
void Profile(llvm::FoldingSetNodeID &ID) const {
  Profile(ID, getBaseType(), Quals);
}

static void Profile(llvm::FoldingSetNodeID &ID,
                    const Type *BaseType,
                    Qualifiers Quals) {
  assert(!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!")((!Quals.hasFastQualifiers() && "fast qualifiers in ExtQuals hash!"
) ? static_cast<void> (0) : __assert_fail ("!Quals.hasFastQualifiers() && \"fast qualifiers in ExtQuals hash!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 1393, __PRETTY_FUNCTION__));
  ID.AddPointer(BaseType);
  Quals.Profile(ID);
}
1397};

1399/// The kind of C++11 ref-qualifier associated with a function type.
1400/// This determines whether a member function's "this" object can be an
1401/// lvalue, rvalue, or neither.
1402enum RefQualifierKind {
/// No ref-qualifier was provided.
RQ_None = 0,

/// An lvalue ref-qualifier was provided (\c &).
RQ_LValue,

/// An rvalue ref-qualifier was provided (\c &&).
RQ_RValue
1411};

1413/// Which keyword(s) were used to create an AutoType.
1414enum class AutoTypeKeyword {
/// auto
Auto,

/// decltype(auto)
DecltypeAuto,

/// __auto_type (GNU extension)
GNUAutoType
1423};

1425/// The base class of the type hierarchy.
1426///
1427/// A central concept with types is that each type always has a canonical
1428/// type.  A canonical type is the type with any typedef names stripped out
1429/// of it or the types it references.  For example, consider:
1430///
1431///  typedef int  foo;
1432///  typedef foo* bar;
1433///    'int *'    'foo *'    'bar'
1434///
1435/// There will be a Type object created for 'int'.  Since int is canonical, its
1436/// CanonicalType pointer points to itself.  There is also a Type for 'foo' (a
1437/// TypedefType).  Its CanonicalType pointer points to the 'int' Type.  Next
1438/// there is a PointerType that represents 'int*', which, like 'int', is
1439/// canonical.  Finally, there is a PointerType type for 'foo*' whose canonical
1440/// type is 'int*', and there is a TypedefType for 'bar', whose canonical type
1441/// is also 'int*'.
1442///
1443/// Non-canonical types are useful for emitting diagnostics, without losing
1444/// information about typedefs being used.  Canonical types are useful for type
1445/// comparisons (they allow by-pointer equality tests) and useful for reasoning
1446/// about whether something has a particular form (e.g. is a function type),
1447/// because they implicitly, recursively, strip all typedefs out of a type.
1448///
1449/// Types, once created, are immutable.
1450///
1451class alignas(8) Type : public ExtQualsTypeCommonBase {
1452public:
enum TypeClass {
1454#define TYPE(Class, Base) Class,
1455#define LAST_TYPE(Class) TypeLast = Class
1456#define ABSTRACT_TYPE(Class, Base)
1457#include "clang/AST/TypeNodes.inc"
};

1460private:
/// Bitfields required by the Type class.
class TypeBitfields {
  friend class Type;
  template <class T> friend class TypePropertyCache;

  /// TypeClass bitfield - Enum that specifies what subclass this belongs to.
  unsigned TC : 8;

  /// Store information on the type dependency.
  /*TypeDependence*/ unsigned Dependence : TypeDependenceBits;

  /// True if the cache (i.e. the bitfields here starting with
  /// 'Cache') is valid.
  mutable unsigned CacheValid : 1;

  /// Linkage of this type.
  mutable unsigned CachedLinkage : 3;

  /// Whether this type involves and local or unnamed types.
  mutable unsigned CachedLocalOrUnnamed : 1;

  /// Whether this type comes from an AST file.
  mutable unsigned FromAST : 1;

  bool isCacheValid() const {
    return CacheValid;
  }

  Linkage getLinkage() const {
    assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache"
) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 1490, __PRETTY_FUNCTION__));
    return static_cast<Linkage>(CachedLinkage);
  }

  bool hasLocalOrUnnamedType() const {
    assert(isCacheValid() && "getting linkage from invalid cache")((isCacheValid() && "getting linkage from invalid cache"
) ? static_cast<void> (0) : __assert_fail ("isCacheValid() && \"getting linkage from invalid cache\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 1495, __PRETTY_FUNCTION__));
    return CachedLocalOrUnnamed;
  }
};
enum { NumTypeBits = 18 };

1501protected:
// These classes allow subclasses to somewhat cleanly pack bitfields
// into Type.

class ArrayTypeBitfields {
  friend class ArrayType;

  unsigned : NumTypeBits;

  /// CVR qualifiers from declarations like
  /// 'int X[static restrict 4]'. For function parameters only.
  unsigned IndexTypeQuals : 3;

  /// Storage class qualifiers from declarations like
  /// 'int X[static restrict 4]'. For function parameters only.
  /// Actually an ArrayType::ArraySizeModifier.
  unsigned SizeModifier : 3;
};

class ConstantArrayTypeBitfields {
  friend class ConstantArrayType;

  unsigned : NumTypeBits + 3 + 3;

  /// Whether we have a stored size expression.
  unsigned HasStoredSizeExpr : 1;
};

class BuiltinTypeBitfields {
  friend class BuiltinType;

  unsigned : NumTypeBits;

  /// The kind (BuiltinType::Kind) of builtin type this is.
  unsigned Kind : 8;
};

/// FunctionTypeBitfields store various bits belonging to FunctionProtoType.
/// Only common bits are stored here. Additional uncommon bits are stored
/// in a trailing object after FunctionProtoType.
class FunctionTypeBitfields {
  friend class FunctionProtoType;
  friend class FunctionType;

  unsigned : NumTypeBits;

  /// Extra information which affects how the function is called, like
  /// regparm and the calling convention.
  unsigned ExtInfo : 12;

  /// The ref-qualifier associated with a \c FunctionProtoType.
  ///
  /// This is a value of type \c RefQualifierKind.
  unsigned RefQualifier : 2;

  /// Used only by FunctionProtoType, put here to pack with the
  /// other bitfields.
  /// The qualifiers are part of FunctionProtoType because...
  ///
  /// C++ 8.3.5p4: The return type, the parameter type list and the
  /// cv-qualifier-seq, [...], are part of the function type.
  unsigned FastTypeQuals : Qualifiers::FastWidth;
  /// Whether this function has extended Qualifiers.
  unsigned HasExtQuals : 1;

  /// The number of parameters this function has, not counting '...'.
  /// According to [implimits] 8 bits should be enough here but this is
  /// somewhat easy to exceed with metaprogramming and so we would like to
  /// keep NumParams as wide as reasonably possible.
  unsigned NumParams : 16;

  /// The type of exception specification this function has.
  unsigned ExceptionSpecType : 4;

  /// Whether this function has extended parameter information.
  unsigned HasExtParameterInfos : 1;

  /// Whether the function is variadic.
  unsigned Variadic : 1;

  /// Whether this function has a trailing return type.
  unsigned HasTrailingReturn : 1;
};

class ObjCObjectTypeBitfields {
  friend class ObjCObjectType;

  unsigned : NumTypeBits;

  /// The number of type arguments stored directly on this object type.
  unsigned NumTypeArgs : 7;

  /// The number of protocols stored directly on this object type.
  unsigned NumProtocols : 6;

  /// Whether this is a "kindof" type.
  unsigned IsKindOf : 1;
};

class ReferenceTypeBitfields {
  friend class ReferenceType;

  unsigned : NumTypeBits;

  /// True if the type was originally spelled with an lvalue sigil.
  /// This is never true of rvalue references but can also be false
  /// on lvalue references because of C++0x [dcl.typedef]p9,
  /// as follows:
  ///
  ///   typedef int &ref;    // lvalue, spelled lvalue
  ///   typedef int &&rvref; // rvalue
  ///   ref &a;              // lvalue, inner ref, spelled lvalue
  ///   ref &&a;             // lvalue, inner ref
  ///   rvref &a;            // lvalue, inner ref, spelled lvalue
  ///   rvref &&a;           // rvalue, inner ref
  unsigned SpelledAsLValue : 1;

  /// True if the inner type is a reference type.  This only happens
  /// in non-canonical forms.
  unsigned InnerRef : 1;
};

class TypeWithKeywordBitfields {
  friend class TypeWithKeyword;

  unsigned : NumTypeBits;

  /// An ElaboratedTypeKeyword.  8 bits for efficient access.
  unsigned Keyword : 8;
};

enum { NumTypeWithKeywordBits = 8 };

class ElaboratedTypeBitfields {
  friend class ElaboratedType;

  unsigned : NumTypeBits;
  unsigned : NumTypeWithKeywordBits;

  /// Whether the ElaboratedType has a trailing OwnedTagDecl.
  unsigned HasOwnedTagDecl : 1;
};

class VectorTypeBitfields {
  friend class VectorType;
  friend class DependentVectorType;

  unsigned : NumTypeBits;

  /// The kind of vector, either a generic vector type or some
  /// target-specific vector type such as for AltiVec or Neon.
  unsigned VecKind : 3;

  /// The number of elements in the vector.
  unsigned NumElements : 29 - NumTypeBits;

  enum { MaxNumElements = (1 << (29 - NumTypeBits)) - 1 };
};

class AttributedTypeBitfields {
  friend class AttributedType;

  unsigned : NumTypeBits;

  /// An AttributedType::Kind
  unsigned AttrKind : 32 - NumTypeBits;
};

class AutoTypeBitfields {
  friend class AutoType;

  unsigned : NumTypeBits;

  /// Was this placeholder type spelled as 'auto', 'decltype(auto)',
  /// or '__auto_type'?  AutoTypeKeyword value.
  unsigned Keyword : 2;

  /// The number of template arguments in the type-constraints, which is
  /// expected to be able to hold at least 1024 according to [implimits].
  /// However as this limit is somewhat easy to hit with template
  /// metaprogramming we'd prefer to keep it as large as possible.
  /// At the moment it has been left as a non-bitfield since this type
  /// safely fits in 64 bits as an unsigned, so there is no reason to
  /// introduce the performance impact of a bitfield.
  unsigned NumArgs;
};

class SubstTemplateTypeParmPackTypeBitfields {
  friend class SubstTemplateTypeParmPackType;

  unsigned : NumTypeBits;

  /// The number of template arguments in \c Arguments, which is
  /// expected to be able to hold at least 1024 according to [implimits].
  /// However as this limit is somewhat easy to hit with template
  /// metaprogramming we'd prefer to keep it as large as possible.
  /// At the moment it has been left as a non-bitfield since this type
  /// safely fits in 64 bits as an unsigned, so there is no reason to
  /// introduce the performance impact of a bitfield.
  unsigned NumArgs;
};

class TemplateSpecializationTypeBitfields {
  friend class TemplateSpecializationType;

  unsigned : NumTypeBits;

  /// Whether this template specialization type is a substituted type alias.
  unsigned TypeAlias : 1;

  /// The number of template arguments named in this class template
  /// specialization, which is expected to be able to hold at least 1024
  /// according to [implimits]. However, as this limit is somewhat easy to
  /// hit with template metaprogramming we'd prefer to keep it as large
  /// as possible. At the moment it has been left as a non-bitfield since
  /// this type safely fits in 64 bits as an unsigned, so there is no reason
  /// to introduce the performance impact of a bitfield.
  unsigned NumArgs;
};

class DependentTemplateSpecializationTypeBitfields {
  friend class DependentTemplateSpecializationType;

  unsigned : NumTypeBits;
  unsigned : NumTypeWithKeywordBits;

  /// The number of template arguments named in this class template
  /// specialization, which is expected to be able to hold at least 1024
  /// according to [implimits]. However, as this limit is somewhat easy to
  /// hit with template metaprogramming we'd prefer to keep it as large
  /// as possible. At the moment it has been left as a non-bitfield since
  /// this type safely fits in 64 bits as an unsigned, so there is no reason
  /// to introduce the performance impact of a bitfield.
  unsigned NumArgs;
};

class PackExpansionTypeBitfields {
  friend class PackExpansionType;

  unsigned : NumTypeBits;

  /// The number of expansions that this pack expansion will
  /// generate when substituted (+1), which is expected to be able to
  /// hold at least 1024 according to [implimits]. However, as this limit
  /// is somewhat easy to hit with template metaprogramming we'd prefer to
  /// keep it as large as possible. At the moment it has been left as a
  /// non-bitfield since this type safely fits in 64 bits as an unsigned, so
  /// there is no reason to introduce the performance impact of a bitfield.
  ///
  /// This field will only have a non-zero value when some of the parameter
  /// packs that occur within the pattern have been substituted but others
  /// have not.
  unsigned NumExpansions;
};

union {
  TypeBitfields TypeBits;
  ArrayTypeBitfields ArrayTypeBits;
  ConstantArrayTypeBitfields ConstantArrayTypeBits;
  AttributedTypeBitfields AttributedTypeBits;
  AutoTypeBitfields AutoTypeBits;
  BuiltinTypeBitfields BuiltinTypeBits;
  FunctionTypeBitfields FunctionTypeBits;
  ObjCObjectTypeBitfields ObjCObjectTypeBits;
  ReferenceTypeBitfields ReferenceTypeBits;
  TypeWithKeywordBitfields TypeWithKeywordBits;
  ElaboratedTypeBitfields ElaboratedTypeBits;
  VectorTypeBitfields VectorTypeBits;
  SubstTemplateTypeParmPackTypeBitfields SubstTemplateTypeParmPackTypeBits;
  TemplateSpecializationTypeBitfields TemplateSpecializationTypeBits;
  DependentTemplateSpecializationTypeBitfields
    DependentTemplateSpecializationTypeBits;
  PackExpansionTypeBitfields PackExpansionTypeBits;

  static_assert(sizeof(TypeBitfields) <= 8,
                "TypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(ArrayTypeBitfields) <= 8,
                "ArrayTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(AttributedTypeBitfields) <= 8,
                "AttributedTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(AutoTypeBitfields) <= 8,
                "AutoTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(BuiltinTypeBitfields) <= 8,
                "BuiltinTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(FunctionTypeBitfields) <= 8,
                "FunctionTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(ObjCObjectTypeBitfields) <= 8,
                "ObjCObjectTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(ReferenceTypeBitfields) <= 8,
                "ReferenceTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(TypeWithKeywordBitfields) <= 8,
                "TypeWithKeywordBitfields is larger than 8 bytes!");
  static_assert(sizeof(ElaboratedTypeBitfields) <= 8,
                "ElaboratedTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(VectorTypeBitfields) <= 8,
                "VectorTypeBitfields is larger than 8 bytes!");
  static_assert(sizeof(SubstTemplateTypeParmPackTypeBitfields) <= 8,
                "SubstTemplateTypeParmPackTypeBitfields is larger"
                " than 8 bytes!");
  static_assert(sizeof(TemplateSpecializationTypeBitfields) <= 8,
                "TemplateSpecializationTypeBitfields is larger"
                " than 8 bytes!");
  static_assert(sizeof(DependentTemplateSpecializationTypeBitfields) <= 8,
                "DependentTemplateSpecializationTypeBitfields is larger"
                " than 8 bytes!");
  static_assert(sizeof(PackExpansionTypeBitfields) <= 8,
                "PackExpansionTypeBitfields is larger than 8 bytes");
};

1810private:
template <class T> friend class TypePropertyCache;

/// Set whether this type comes from an AST file.
void setFromAST(bool V = true) const {
  TypeBits.FromAST = V;
}

1818protected:
friend class ASTContext;

Type(TypeClass tc, QualType canon, bool Dependent,
     bool InstantiationDependent, bool VariablyModified,
     bool ContainsUnexpandedParameterPack)
    : ExtQualsTypeCommonBase(this,
                             canon.isNull() ? QualType(this_(), 0) : canon) {
  auto Deps = TypeDependence::None;
  if (Dependent)
    Deps |= TypeDependence::Dependent | TypeDependence::Instantiation;
  if (InstantiationDependent)
    Deps |= TypeDependence::Instantiation;
  if (ContainsUnexpandedParameterPack)
    Deps |= TypeDependence::UnexpandedPack;
  if (VariablyModified)
    Deps |= TypeDependence::VariablyModified;

  TypeBits.TC = tc;
  TypeBits.Dependence = static_cast<unsigned>(Deps);
  TypeBits.CacheValid = false;
  TypeBits.CachedLocalOrUnnamed = false;
  TypeBits.CachedLinkage = NoLinkage;
  TypeBits.FromAST = false;
}

// silence VC++ warning C4355: 'this' : used in base member initializer list
Type *this_() { return this; }

void setDependent(bool D = true) {
  if (!D) {
    TypeBits.Dependence &= ~static_cast<unsigned>(TypeDependence::Dependent);
    return;
  }
  TypeBits.Dependence |= static_cast<unsigned>(TypeDependence::Dependent |
                                               TypeDependence::Instantiation);
}

void setInstantiationDependent(bool D = true) {
  if (D)
    TypeBits.Dependence |=
        static_cast<unsigned>(TypeDependence::Instantiation);
  else
    TypeBits.Dependence &=
        ~static_cast<unsigned>(TypeDependence::Instantiation);
}

void setVariablyModified(bool VM = true) {
  if (VM)
    TypeBits.Dependence |=
        static_cast<unsigned>(TypeDependence::VariablyModified);
  else
    TypeBits.Dependence &=
        ~static_cast<unsigned>(TypeDependence::VariablyModified);
}

void setContainsUnexpandedParameterPack(bool PP = true) {
  if (PP)
    TypeBits.Dependence |=
        static_cast<unsigned>(TypeDependence::UnexpandedPack);
  else
    TypeBits.Dependence &=
        ~static_cast<unsigned>(TypeDependence::UnexpandedPack);
}

1883public:
friend class ASTReader;
friend class ASTWriter;
template <class T> friend class serialization::AbstractTypeReader;
template <class T> friend class serialization::AbstractTypeWriter;

Type(const Type &) = delete;
Type(Type &&) = delete;
Type &operator=(const Type &) = delete;
Type &operator=(Type &&) = delete;

TypeClass getTypeClass() const { return static_cast<TypeClass>(TypeBits.TC); }

/// Whether this type comes from an AST file.
bool isFromAST() const { return TypeBits.FromAST; }

/// Whether this type is or contains an unexpanded parameter
/// pack, used to support C++0x variadic templates.
///
/// A type that contains a parameter pack shall be expanded by the
/// ellipsis operator at some point. For example, the typedef in the
/// following example contains an unexpanded parameter pack 'T':
///
/// \code
/// template<typename ...T>
/// struct X {
///   typedef T* pointer_types; // ill-formed; T is a parameter pack.
/// };
/// \endcode
///
/// Note that this routine does not specify which
bool containsUnexpandedParameterPack() const {
  return getDependence() & TypeDependence::UnexpandedPack;
}

/// Determines if this type would be canonical if it had no further
/// qualification.
bool isCanonicalUnqualified() const {
  return CanonicalType == QualType(this, 0);
}

/// Pull a single level of sugar off of this locally-unqualified type.
/// Users should generally prefer SplitQualType::getSingleStepDesugaredType()
/// or QualType::getSingleStepDesugaredType(const ASTContext&).
QualType getLocallyUnqualifiedSingleStepDesugaredType() const;

/// Types are partitioned into 3 broad categories (C99 6.2.5p1):
/// object types, function types, and incomplete types.

/// Return true if this is an incomplete type.
/// A type that can describe objects, but which lacks information needed to
/// determine its size (e.g. void, or a fwd declared struct). Clients of this
/// routine will need to determine if the size is actually required.
///
/// Def If non-null, and the type refers to some kind of declaration
/// that can be completed (such as a C struct, C++ class, or Objective-C
/// class), will be set to the declaration.
bool isIncompleteType(NamedDecl **Def = nullptr) const;

/// Return true if this is an incomplete or object
/// type, in other words, not a function type.
bool isIncompleteOrObjectType() const {
  return !isFunctionType();
}

/// Determine whether this type is an object type.
bool isObjectType() const {
  // C++ [basic.types]p8:
  //   An object type is a (possibly cv-qualified) type that is not a
  //   function type, not a reference type, and not a void type.
  return !isReferenceType() && !isFunctionType() && !isVoidType();
}

/// Return true if this is a literal type
/// (C++11 [basic.types]p10)
bool isLiteralType(const ASTContext &Ctx) const;

/// Test if this type is a standard-layout type.
/// (C++0x [basic.type]p9)
bool isStandardLayoutType() const;

/// Helper methods to distinguish type categories. All type predicates
/// operate on the canonical type, ignoring typedefs and qualifiers.

/// Returns true if the type is a builtin type.
bool isBuiltinType() const;

/// Test for a particular builtin type.
bool isSpecificBuiltinType(unsigned K) const;

/// Test for a type which does not represent an actual type-system type but
/// is instead used as a placeholder for various convenient purposes within
/// Clang.  All such types are BuiltinTypes.
bool isPlaceholderType() const;
const BuiltinType *getAsPlaceholderType() const;

/// Test for a specific placeholder type.
bool isSpecificPlaceholderType(unsigned K) const;

/// Test for a placeholder type other than Overload; see
/// BuiltinType::isNonOverloadPlaceholderType.
bool isNonOverloadPlaceholderType() const;

/// isIntegerType() does *not* include complex integers (a GCC extension).
/// isComplexIntegerType() can be used to test for complex integers.
bool isIntegerType() const;     // C99 6.2.5p17 (int, char, bool, enum)
bool isEnumeralType() const;

/// Determine whether this type is a scoped enumeration type.
bool isScopedEnumeralType() const;
bool isBooleanType() const;
bool isCharType() const;
bool isWideCharType() const;
bool isChar8Type() const;
bool isChar16Type() const;
bool isChar32Type() const;
bool isAnyCharacterType() const;
bool isIntegralType(const ASTContext &Ctx) const;

/// Determine whether this type is an integral or enumeration type.
bool isIntegralOrEnumerationType() const;

/// Determine whether this type is an integral or unscoped enumeration type.
bool isIntegralOrUnscopedEnumerationType() const;
bool isUnscopedEnumerationType() const;

/// Floating point categories.
bool isRealFloatingType() const; // C99 6.2.5p10 (float, double, long double)
/// isComplexType() does *not* include complex integers (a GCC extension).
/// isComplexIntegerType() can be used to test for complex integers.
bool isComplexType() const;      // C99 6.2.5p11 (complex)
bool isAnyComplexType() const;   // C99 6.2.5p11 (complex) + Complex Int.
bool isFloatingType() const;     // C99 6.2.5p11 (real floating + complex)
bool isHalfType() const;         // OpenCL 6.1.1.1, NEON (IEEE 754-2008 half)
bool isFloat16Type() const;      // C11 extension ISO/IEC TS 18661
bool isFloat128Type() const;
bool isRealType() const;         // C99 6.2.5p17 (real floating + integer)
bool isArithmeticType() const;   // C99 6.2.5p18 (integer + floating)
bool isVoidType() const;         // C99 6.2.5p19
bool isScalarType() const;       // C99 6.2.5p21 (arithmetic + pointers)
bool isAggregateType() const;
bool isFundamentalType() const;
bool isCompoundType() const;

// Type Predicates: Check to see if this type is structurally the specified
// type, ignoring typedefs and qualifiers.
bool isFunctionType() const;
bool isFunctionNoProtoType() const { return getAs<FunctionNoProtoType>(); }
bool isFunctionProtoType() const { return getAs<FunctionProtoType>(); }
bool isPointerType() const;
bool isAnyPointerType() const;   // Any C pointer or ObjC object pointer
bool isBlockPointerType() const;
bool isVoidPointerType() const;
bool isReferenceType() const;
bool isLValueReferenceType() const;
bool isRValueReferenceType() const;
bool isObjectPointerType() const;
bool isFunctionPointerType() const;
bool isFunctionReferenceType() const;
bool isMemberPointerType() const;
bool isMemberFunctionPointerType() const;
bool isMemberDataPointerType() const;
bool isArrayType() const;
bool isConstantArrayType() const;
bool isIncompleteArrayType() const;
bool isVariableArrayType() const;
bool isDependentSizedArrayType() const;
bool isRecordType() const;
bool isClassType() const;
bool isStructureType() const;
bool isObjCBoxableRecordType() const;
bool isInterfaceType() const;
bool isStructureOrClassType() const;
bool isUnionType() const;
bool isComplexIntegerType() const;            // GCC _Complex integer type.
bool isVectorType() const;                    // GCC vector type.
bool isExtVectorType() const;                 // Extended vector type.
bool isDependentAddressSpaceType() const;     // value-dependent address space qualifier
bool isObjCObjectPointerType() const;         // pointer to ObjC object
bool isObjCRetainableType() const;            // ObjC object or block pointer
bool isObjCLifetimeType() const;              // (array of)* retainable type
bool isObjCIndirectLifetimeType() const;      // (pointer to)* lifetime type
bool isObjCNSObjectType() const;              // __attribute__((NSObject))
bool isObjCIndependentClassType() const;      // __attribute__((objc_independent_class))
// FIXME: change this to 'raw' interface type, so we can used 'interface' type
// for the common case.
bool isObjCObjectType() const;                // NSString or typeof(*(id)0)
bool isObjCQualifiedInterfaceType() const;    // NSString<foo>
bool isObjCQualifiedIdType() const;           // id<foo>
bool isObjCQualifiedClassType() const;        // Class<foo>
bool isObjCObjectOrInterfaceType() const;
bool isObjCIdType() const;                    // id
bool isDecltypeType() const;
/// Was this type written with the special inert-in-ARC __unsafe_unretained
/// qualifier?
///
/// This approximates the answer to the following question: if this
/// translation unit were compiled in ARC, would this type be qualified
/// with __unsafe_unretained?
bool isObjCInertUnsafeUnretainedType() const {
  return hasAttr(attr::ObjCInertUnsafeUnretained);
}

/// Whether the type is Objective-C 'id' or a __kindof type of an
/// object type, e.g., __kindof NSView * or __kindof id
/// <NSCopying>.
///
/// \param bound Will be set to the bound on non-id subtype types,
/// which will be (possibly specialized) Objective-C class type, or
/// null for 'id.
bool isObjCIdOrObjectKindOfType(const ASTContext &ctx,
                                const ObjCObjectType *&bound) const;

bool isObjCClassType() const;                 // Class

/// Whether the type is Objective-C 'Class' or a __kindof type of an
/// Class type, e.g., __kindof Class <NSCopying>.
///
/// Unlike \c isObjCIdOrObjectKindOfType, there is no relevant bound
/// here because Objective-C's type system cannot express "a class
/// object for a subclass of NSFoo".
bool isObjCClassOrClassKindOfType() const;

bool isBlockCompatibleObjCPointerType(ASTContext &ctx) const;
bool isObjCSelType() const;                 // Class
bool isObjCBuiltinType() const;               // 'id' or 'Class'
bool isObjCARCBridgableType() const;
bool isCARCBridgableType() const;
bool isTemplateTypeParmType() const;          // C++ template type parameter
bool isNullPtrType() const;                   // C++11 std::nullptr_t
bool isNothrowT() const;                      // C++   std::nothrow_t
bool isAlignValT() const;                     // C++17 std::align_val_t
bool isStdByteType() const;                   // C++17 std::byte
bool isAtomicType() const;                    // C11 _Atomic()
bool isUndeducedAutoType() const;             // C++11 auto or
                                              // C++14 decltype(auto)

2120#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
bool is##Id##Type() const;
2122#include "clang/Basic/OpenCLImageTypes.def"

bool isImageType() const;                     // Any OpenCL image type

bool isSamplerT() const;                      // OpenCL sampler_t
bool isEventT() const;                        // OpenCL event_t
bool isClkEventT() const;                     // OpenCL clk_event_t
bool isQueueT() const;                        // OpenCL queue_t
bool isReserveIDT() const;                    // OpenCL reserve_id_t

2132#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
bool is##Id##Type() const;
2134#include "clang/Basic/OpenCLExtensionTypes.def"
// Type defined in cl_intel_device_side_avc_motion_estimation OpenCL extension
bool isOCLIntelSubgroupAVCType() const;
bool isOCLExtOpaqueType() const;              // Any OpenCL extension type

bool isPipeType() const;                      // OpenCL pipe type
bool isOpenCLSpecificType() const;            // Any OpenCL specific type

/// Determines if this type, which must satisfy
/// isObjCLifetimeType(), is implicitly __unsafe_unretained rather
/// than implicitly __strong.
bool isObjCARCImplicitlyUnretainedType() const;

/// Return the implicit lifetime for this type, which must not be dependent.
Qualifiers::ObjCLifetime getObjCARCImplicitLifetime() const;

enum ScalarTypeKind {
  STK_CPointer,
  STK_BlockPointer,
  STK_ObjCObjectPointer,
  STK_MemberPointer,
  STK_Bool,
  STK_Integral,
  STK_Floating,
  STK_IntegralComplex,
  STK_FloatingComplex,
  STK_FixedPoint
};

/// Given that this is a scalar type, classify it.
ScalarTypeKind getScalarTypeKind() const;

TypeDependence getDependence() const {
  return static_cast<TypeDependence>(TypeBits.Dependence);
}

/// Whether this type is a dependent type, meaning that its definition
/// somehow depends on a template parameter (C++ [temp.dep.type]).
bool isDependentType() const {
  return getDependence() & TypeDependence::Dependent;
}

/// Determine whether this type is an instantiation-dependent type,
/// meaning that the type involves a template parameter (even if the
/// definition does not actually depend on the type substituted for that
/// template parameter).
bool isInstantiationDependentType() const {
  return getDependence() & TypeDependence::Instantiation;
}

/// Determine whether this type is an undeduced type, meaning that
/// it somehow involves a C++11 'auto' type or similar which has not yet been
/// deduced.
bool isUndeducedType() const;

/// Whether this type is a variably-modified type (C99 6.7.5).
bool isVariablyModifiedType() const {
  return getDependence() & TypeDependence::VariablyModified;
}

/// Whether this type involves a variable-length array type
/// with a definite size.
bool hasSizedVLAType() const;

/// Whether this type is or contains a local or unnamed type.
bool hasUnnamedOrLocalType() const;

bool isOverloadableType() const;

/// Determine wither this type is a C++ elaborated-type-specifier.
bool isElaboratedTypeSpecifier() const;

bool canDecayToPointerType() const;

/// Whether this type is represented natively as a pointer.  This includes
/// pointers, references, block pointers, and Objective-C interface,
/// qualified id, and qualified interface types, as well as nullptr_t.
bool hasPointerRepresentation() const;

/// Whether this type can represent an objective pointer type for the
/// purpose of GC'ability
bool hasObjCPointerRepresentation() const;

/// Determine whether this type has an integer representation
/// of some sort, e.g., it is an integer type or a vector.
bool hasIntegerRepresentation() const;

/// Determine whether this type has an signed integer representation
/// of some sort, e.g., it is an signed integer type or a vector.
bool hasSignedIntegerRepresentation() const;

/// Determine whether this type has an unsigned integer representation
/// of some sort, e.g., it is an unsigned integer type or a vector.
bool hasUnsignedIntegerRepresentation() const;

/// Determine whether this type has a floating-point representation
/// of some sort, e.g., it is a floating-point type or a vector thereof.
bool hasFloatingRepresentation() const;

// Type Checking Functions: Check to see if this type is structurally the
// specified type, ignoring typedefs and qualifiers, and return a pointer to
// the best type we can.
const RecordType *getAsStructureType() const;
/// NOTE: getAs*ArrayType are methods on ASTContext.
const RecordType *getAsUnionType() const;
const ComplexType *getAsComplexIntegerType() const; // GCC complex int type.
const ObjCObjectType *getAsObjCInterfaceType() const;

// The following is a convenience method that returns an ObjCObjectPointerType
// for object declared using an interface.
const ObjCObjectPointerType *getAsObjCInterfacePointerType() const;
const ObjCObjectPointerType *getAsObjCQualifiedIdType() const;
const ObjCObjectPointerType *getAsObjCQualifiedClassType() const;
const ObjCObjectType *getAsObjCQualifiedInterfaceType() const;

/// Retrieves the CXXRecordDecl that this type refers to, either
/// because the type is a RecordType or because it is the injected-class-name
/// type of a class template or class template partial specialization.
CXXRecordDecl *getAsCXXRecordDecl() const;

/// Retrieves the RecordDecl this type refers to.
RecordDecl *getAsRecordDecl() const;

/// Retrieves the TagDecl that this type refers to, either
/// because the type is a TagType or because it is the injected-class-name
/// type of a class template or class template partial specialization.
TagDecl *getAsTagDecl() const;

/// If this is a pointer or reference to a RecordType, return the
/// CXXRecordDecl that the type refers to.
///
/// If this is not a pointer or reference, or the type being pointed to does
/// not refer to a CXXRecordDecl, returns NULL.
const CXXRecordDecl *getPointeeCXXRecordDecl() const;

/// Get the DeducedType whose type will be deduced for a variable with
/// an initializer of this type. This looks through declarators like pointer
/// types, but not through decltype or typedefs.
DeducedType *getContainedDeducedType() const;

/// Get the AutoType whose type will be deduced for a variable with
/// an initializer of this type. This looks through declarators like pointer
/// types, but not through decltype or typedefs.
AutoType *getContainedAutoType() const {
  return dyn_cast_or_null<AutoType>(getContainedDeducedType());
}

/// Determine whether this type was written with a leading 'auto'
/// corresponding to a trailing return type (possibly for a nested
/// function type within a pointer to function type or similar).
bool hasAutoForTrailingReturnType() const;

/// Member-template getAs<specific type>'.  Look through sugar for
/// an instance of \<specific type>.   This scheme will eventually
/// replace the specific getAsXXXX methods above.
///
/// There are some specializations of this member template listed
/// immediately following this class.
template <typename T> const T *getAs() const;

/// Member-template getAsAdjusted<specific type>. Look through specific kinds
/// of sugar (parens, attributes, etc) for an instance of \<specific type>.
/// This is used when you need to walk over sugar nodes that represent some
/// kind of type adjustment from a type that was written as a \<specific type>
/// to another type that is still canonically a \<specific type>.
template <typename T> const T *getAsAdjusted() const;

/// A variant of getAs<> for array types which silently discards
/// qualifiers from the outermost type.
const ArrayType *getAsArrayTypeUnsafe() const;

/// Member-template castAs<specific type>.  Look through sugar for
/// the underlying instance of \<specific type>.
///
/// This method has the same relationship to getAs<T> as cast<T> has
/// to dyn_cast<T>; which is to say, the underlying type *must*
/// have the intended type, and this method will never return null.
template <typename T> const T *castAs() const;

/// A variant of castAs<> for array type which silently discards
/// qualifiers from the outermost type.
const ArrayType *castAsArrayTypeUnsafe() const;

/// Determine whether this type had the specified attribute applied to it
/// (looking through top-level type sugar).
bool hasAttr(attr::Kind AK) const;

/// Get the base element type of this type, potentially discarding type
/// qualifiers.  This should never be used when type qualifiers
/// are meaningful.
const Type *getBaseElementTypeUnsafe() const;

/// If this is an array type, return the element type of the array,
/// potentially with type qualifiers missing.
/// This should never be used when type qualifiers are meaningful.
const Type *getArrayElementTypeNoTypeQual() const;

/// If this is a pointer type, return the pointee type.
/// If this is an array type, return the array element type.
/// This should never be used when type qualifiers are meaningful.
const Type *getPointeeOrArrayElementType() const;

/// If this is a pointer, ObjC object pointer, or block
/// pointer, this returns the respective pointee.
QualType getPointeeType() const;

/// Return the specified type with any "sugar" removed from the type,
/// removing any typedefs, typeofs, etc., as well as any qualifiers.
const Type *getUnqualifiedDesugaredType() const;

/// More type predicates useful for type checking/promotion
bool isPromotableIntegerType() const; // C99 6.3.1.1p2

/// Return true if this is an integer type that is
/// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..],
/// or an enum decl which has a signed representation.
bool isSignedIntegerType() const;

/// Return true if this is an integer type that is
/// unsigned, according to C99 6.2.5p6 [which returns true for _Bool],
/// or an enum decl which has an unsigned representation.
bool isUnsignedIntegerType() const;

/// Determines whether this is an integer type that is signed or an
/// enumeration types whose underlying type is a signed integer type.
bool isSignedIntegerOrEnumerationType() const;

/// Determines whether this is an integer type that is unsigned or an
/// enumeration types whose underlying type is a unsigned integer type.
bool isUnsignedIntegerOrEnumerationType() const;

/// Return true if this is a fixed point type according to
/// ISO/IEC JTC1 SC22 WG14 N1169.
bool isFixedPointType() const;

/// Return true if this is a fixed point or integer type.
bool isFixedPointOrIntegerType() const;

/// Return true if this is a saturated fixed point type according to
/// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned.
bool isSaturatedFixedPointType() const;

/// Return true if this is a saturated fixed point type according to
/// ISO/IEC JTC1 SC22 WG14 N1169. This type can be signed or unsigned.
bool isUnsaturatedFixedPointType() const;

/// Return true if this is a fixed point type that is signed according
/// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated.
bool isSignedFixedPointType() const;

/// Return true if this is a fixed point type that is unsigned according
/// to ISO/IEC JTC1 SC22 WG14 N1169. This type can also be saturated.
bool isUnsignedFixedPointType() const;

/// Return true if this is not a variable sized type,
/// according to the rules of C99 6.7.5p3.  It is not legal to call this on
/// incomplete types.
bool isConstantSizeType() const;

/// Returns true if this type can be represented by some
/// set of type specifiers.
bool isSpecifierType() const;

/// Determine the linkage of this type.
Linkage getLinkage() const;

/// Determine the visibility of this type.
Visibility getVisibility() const {
  return getLinkageAndVisibility().getVisibility();
}

/// Return true if the visibility was explicitly set is the code.
bool isVisibilityExplicit() const {
  return getLinkageAndVisibility().isVisibilityExplicit();
}

/// Determine the linkage and visibility of this type.
LinkageInfo getLinkageAndVisibility() const;

/// True if the computed linkage is valid. Used for consistency
/// checking. Should always return true.
bool isLinkageValid() const;

/// Determine the nullability of the given type.
///
/// Note that nullability is only captured as sugar within the type
/// system, not as part of the canonical type, so nullability will
/// be lost by canonicalization and desugaring.
Optional<NullabilityKind> getNullability(const ASTContext &context) const;

/// Determine whether the given type can have a nullability
/// specifier applied to it, i.e., if it is any kind of pointer type.
///
/// \param ResultIfUnknown The value to return if we don't yet know whether
///        this type can have nullability because it is dependent.
bool canHaveNullability(bool ResultIfUnknown = true) const;

/// Retrieve the set of substitutions required when accessing a member
/// of the Objective-C receiver type that is declared in the given context.
///
/// \c *this is the type of the object we're operating on, e.g., the
/// receiver for a message send or the base of a property access, and is
/// expected to be of some object or object pointer type.
///
/// \param dc The declaration context for which we are building up a
/// substitution mapping, which should be an Objective-C class, extension,
/// category, or method within.
///
/// \returns an array of type arguments that can be substituted for
/// the type parameters of the given declaration context in any type described
/// within that context, or an empty optional to indicate that no
/// substitution is required.
Optional<ArrayRef<QualType>>
getObjCSubstitutions(const DeclContext *dc) const;

/// Determines if this is an ObjC interface type that may accept type
/// parameters.
bool acceptsObjCTypeParams() const;

const char *getTypeClassName() const;

QualType getCanonicalTypeInternal() const {
  return CanonicalType;
}

CanQualType getCanonicalTypeUnqualified() const; // in CanonicalType.h
void dump() const;
void dump(llvm::raw_ostream &OS) const;
2462};

2464/// This will check for a TypedefType by removing any existing sugar
2465/// until it reaches a TypedefType or a non-sugared type.
2466template <> const TypedefType *Type::getAs() const;

2468/// This will check for a TemplateSpecializationType by removing any
2469/// existing sugar until it reaches a TemplateSpecializationType or a
2470/// non-sugared type.
2471template <> const TemplateSpecializationType *Type::getAs() const;

2473/// This will check for an AttributedType by removing any existing sugar
2474/// until it reaches an AttributedType or a non-sugared type.
2475template <> const AttributedType *Type::getAs() const;

2477// We can do canonical leaf types faster, because we don't have to
2478// worry about preserving child type decoration.
2479#define TYPE(Class, Base)
2480#define LEAF_TYPE(Class) \
2481template <> inline const Class##Type *Type::getAs() const { \
return dyn_cast<Class##Type>(CanonicalType); \
2483} \
2484template <> inline const Class##Type *Type::castAs() const { \
return cast<Class##Type>(CanonicalType); \
2486}
2487#include "clang/AST/TypeNodes.inc"

2489/// This class is used for builtin types like 'int'.  Builtin
2490/// types are always canonical and have a literal name field.
2491class BuiltinType : public Type {
2492public:
enum Kind {
2494// OpenCL image types
2495#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) Id,
2496#include "clang/Basic/OpenCLImageTypes.def"
2497// OpenCL extension types
2498#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) Id,
2499#include "clang/Basic/OpenCLExtensionTypes.def"
2500// SVE Types
2501#define SVE_TYPE(Name, Id, SingletonId) Id,
2502#include "clang/Basic/AArch64SVEACLETypes.def"
2503// All other builtin types
2504#define BUILTIN_TYPE(Id, SingletonId) Id,
2505#define LAST_BUILTIN_TYPE(Id) LastKind = Id
2506#include "clang/AST/BuiltinTypes.def"
};

2509private:
friend class ASTContext; // ASTContext creates these.

BuiltinType(Kind K)
    : Type(Builtin, QualType(), /*Dependent=*/(K == Dependent),
           /*InstantiationDependent=*/(K == Dependent),
           /*VariablyModified=*/false,
           /*Unexpanded parameter pack=*/false) {
  BuiltinTypeBits.Kind = K;
}

2520public:
Kind getKind() const { return static_cast<Kind>(BuiltinTypeBits.Kind); }
StringRef getName(const PrintingPolicy &Policy) const;

const char *getNameAsCString(const PrintingPolicy &Policy) const {
  // The StringRef is null-terminated.
  StringRef str = getName(Policy);
  assert(!str.empty() && str.data()[str.size()] == '\0')((!str.empty() && str.data()[str.size()] == '\0') ? static_cast
<void> (0) : __assert_fail ("!str.empty() && str.data()[str.size()] == '\\0'"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 2527, __PRETTY_FUNCTION__));
  return str.data();
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

bool isInteger() const {
  return getKind() >= Bool && getKind() <= Int128;
}

bool isSignedInteger() const {
  return getKind() >= Char_S && getKind() <= Int128;
}

bool isUnsignedInteger() const {
  return getKind() >= Bool && getKind() <= UInt128;
}

bool isFloatingPoint() const {
  return getKind() >= Half && getKind() <= Float128;
}

/// Determines whether the given kind corresponds to a placeholder type.
static bool isPlaceholderTypeKind(Kind K) {
  return K >= Overload;
}

/// Determines whether this type is a placeholder type, i.e. a type
/// which cannot appear in arbitrary positions in a fully-formed
/// expression.
bool isPlaceholderType() const {
  return isPlaceholderTypeKind(getKind());
}

/// Determines whether this type is a placeholder type other than
/// Overload.  Most placeholder types require only syntactic
/// information about their context in order to be resolved (e.g.
/// whether it is a call expression), which means they can (and
/// should) be resolved in an earlier "phase" of analysis.
/// Overload expressions sometimes pick up further information
/// from their context, like whether the context expects a
/// specific function-pointer type, and so frequently need
/// special treatment.
bool isNonOverloadPlaceholderType() const {
  return getKind() > Overload;
}

static bool classof(const Type *T) { return T->getTypeClass() == Builtin; }
2576};

2578/// Complex values, per C99 6.2.5p11.  This supports the C99 complex
2579/// types (_Complex float etc) as well as the GCC integer complex extensions.
2580class ComplexType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

QualType ElementType;

ComplexType(QualType Element, QualType CanonicalPtr)
    : Type(Complex, CanonicalPtr, Element->isDependentType(),
           Element->isInstantiationDependentType(),
           Element->isVariablyModifiedType(),
           Element->containsUnexpandedParameterPack()),
      ElementType(Element) {}

2592public:
QualType getElementType() const { return ElementType; }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getElementType());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType Element) {
  ID.AddPointer(Element.getAsOpaquePtr());
}

static bool classof(const Type *T) { return T->getTypeClass() == Complex; }
2607};

2609/// Sugar for parentheses used when specifying types.
2610class ParenType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

QualType Inner;

ParenType(QualType InnerType, QualType CanonType)
    : Type(Paren, CanonType, InnerType->isDependentType(),
           InnerType->isInstantiationDependentType(),
           InnerType->isVariablyModifiedType(),
           InnerType->containsUnexpandedParameterPack()),
      Inner(InnerType) {}

2622public:
QualType getInnerType() const { return Inner; }

bool isSugared() const { return true; }
QualType desugar() const { return getInnerType(); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getInnerType());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType Inner) {
  Inner.Profile(ID);
}

static bool classof(const Type *T) { return T->getTypeClass() == Paren; }
2637};

2639/// PointerType - C99 6.7.5.1 - Pointer Declarators.
2640class PointerType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

QualType PointeeType;

PointerType(QualType Pointee, QualType CanonicalPtr)
    : Type(Pointer, CanonicalPtr, Pointee->isDependentType(),
           Pointee->isInstantiationDependentType(),
           Pointee->isVariablyModifiedType(),
           Pointee->containsUnexpandedParameterPack()),
      PointeeType(Pointee) {}

2652public:
QualType getPointeeType() const { return PointeeType; }

/// Returns true if address spaces of pointers overlap.
/// OpenCL v2.0 defines conversion rules for pointers to different
/// address spaces (OpenCLC v2.0 s6.5.5) and notion of overlapping
/// address spaces.
/// CL1.1 or CL1.2:
///   address spaces overlap iff they are they same.
/// CL2.0 adds:
///   __generic overlaps with any address space except for __constant.
bool isAddressSpaceOverlapping(const PointerType &other) const {
  Qualifiers thisQuals = PointeeType.getQualifiers();
  Qualifiers otherQuals = other.getPointeeType().getQualifiers();
  // Address spaces overlap if at least one of them is a superset of another
  return thisQuals.isAddressSpaceSupersetOf(otherQuals) ||
         otherQuals.isAddressSpaceSupersetOf(thisQuals);
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getPointeeType());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) {
  ID.AddPointer(Pointee.getAsOpaquePtr());
}

static bool classof(const Type *T) { return T->getTypeClass() == Pointer; }
2683};

2685/// Represents a type which was implicitly adjusted by the semantic
2686/// engine for arbitrary reasons.  For example, array and function types can
2687/// decay, and function types can have their calling conventions adjusted.
2688class AdjustedType : public Type, public llvm::FoldingSetNode {
QualType OriginalTy;
QualType AdjustedTy;

2692protected:
friend class ASTContext; // ASTContext creates these.

AdjustedType(TypeClass TC, QualType OriginalTy, QualType AdjustedTy,
             QualType CanonicalPtr)
    : Type(TC, CanonicalPtr, OriginalTy->isDependentType(),
           OriginalTy->isInstantiationDependentType(),
           OriginalTy->isVariablyModifiedType(),
           OriginalTy->containsUnexpandedParameterPack()),
      OriginalTy(OriginalTy), AdjustedTy(AdjustedTy) {}

2703public:
QualType getOriginalType() const { return OriginalTy; }
QualType getAdjustedType() const { return AdjustedTy; }

bool isSugared() const { return true; }
QualType desugar() const { return AdjustedTy; }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, OriginalTy, AdjustedTy);
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType Orig, QualType New) {
  ID.AddPointer(Orig.getAsOpaquePtr());
  ID.AddPointer(New.getAsOpaquePtr());
}

static bool classof(const Type *T) {
  return T->getTypeClass() == Adjusted || T->getTypeClass() == Decayed;
}
2722};

2724/// Represents a pointer type decayed from an array or function type.
2725class DecayedType : public AdjustedType {
friend class ASTContext; // ASTContext creates these.

inline
DecayedType(QualType OriginalType, QualType Decayed, QualType Canonical);

2731public:
QualType getDecayedType() const { return getAdjustedType(); }

inline QualType getPointeeType() const;

static bool classof(const Type *T) { return T->getTypeClass() == Decayed; }
2737};

2739/// Pointer to a block type.
2740/// This type is to represent types syntactically represented as
2741/// "void (^)(int)", etc. Pointee is required to always be a function type.
2742class BlockPointerType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

// Block is some kind of pointer type
QualType PointeeType;

BlockPointerType(QualType Pointee, QualType CanonicalCls)
    : Type(BlockPointer, CanonicalCls, Pointee->isDependentType(),
           Pointee->isInstantiationDependentType(),
           Pointee->isVariablyModifiedType(),
           Pointee->containsUnexpandedParameterPack()),
      PointeeType(Pointee) {}

2755public:
// Get the pointee type. Pointee is required to always be a function type.
QualType getPointeeType() const { return PointeeType; }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
    Profile(ID, getPointeeType());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee) {
    ID.AddPointer(Pointee.getAsOpaquePtr());
}

static bool classof(const Type *T) {
  return T->getTypeClass() == BlockPointer;
}
2773};

2775/// Base for LValueReferenceType and RValueReferenceType
2776class ReferenceType : public Type, public llvm::FoldingSetNode {
QualType PointeeType;

2779protected:
ReferenceType(TypeClass tc, QualType Referencee, QualType CanonicalRef,
              bool SpelledAsLValue)
    : Type(tc, CanonicalRef, Referencee->isDependentType(),
           Referencee->isInstantiationDependentType(),
           Referencee->isVariablyModifiedType(),
           Referencee->containsUnexpandedParameterPack()),
      PointeeType(Referencee) {
  ReferenceTypeBits.SpelledAsLValue = SpelledAsLValue;
  ReferenceTypeBits.InnerRef = Referencee->isReferenceType();
}

2791public:
bool isSpelledAsLValue() const { return ReferenceTypeBits.SpelledAsLValue; }
bool isInnerRef() const { return ReferenceTypeBits.InnerRef; }

QualType getPointeeTypeAsWritten() const { return PointeeType; }

QualType getPointeeType() const {
  // FIXME: this might strip inner qualifiers; okay?
  const ReferenceType *T = this;
  while (T->isInnerRef())
    T = T->PointeeType->castAs<ReferenceType>();
  return T->PointeeType;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, PointeeType, isSpelledAsLValue());
}

static void Profile(llvm::FoldingSetNodeID &ID,
                    QualType Referencee,
                    bool SpelledAsLValue) {
  ID.AddPointer(Referencee.getAsOpaquePtr());
  ID.AddBoolean(SpelledAsLValue);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == LValueReference ||
         T->getTypeClass() == RValueReference;
}
2820};

2822/// An lvalue reference type, per C++11 [dcl.ref].
2823class LValueReferenceType : public ReferenceType {
friend class ASTContext; // ASTContext creates these

LValueReferenceType(QualType Referencee, QualType CanonicalRef,
                    bool SpelledAsLValue)
    : ReferenceType(LValueReference, Referencee, CanonicalRef,
                    SpelledAsLValue) {}

2831public:
bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == LValueReference;
}
2838};

2840/// An rvalue reference type, per C++11 [dcl.ref].
2841class RValueReferenceType : public ReferenceType {
friend class ASTContext; // ASTContext creates these

RValueReferenceType(QualType Referencee, QualType CanonicalRef)
     : ReferenceType(RValueReference, Referencee, CanonicalRef, false) {}

2847public:
bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == RValueReference;
}
2854};

2856/// A pointer to member type per C++ 8.3.3 - Pointers to members.
2857///
2858/// This includes both pointers to data members and pointer to member functions.
2859class MemberPointerType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

QualType PointeeType;

/// The class of which the pointee is a member. Must ultimately be a
/// RecordType, but could be a typedef or a template parameter too.
const Type *Class;

MemberPointerType(QualType Pointee, const Type *Cls, QualType CanonicalPtr)
    : Type(MemberPointer, CanonicalPtr,
           Cls->isDependentType() || Pointee->isDependentType(),
           (Cls->isInstantiationDependentType() ||
            Pointee->isInstantiationDependentType()),
           Pointee->isVariablyModifiedType(),
           (Cls->containsUnexpandedParameterPack() ||
            Pointee->containsUnexpandedParameterPack())),
           PointeeType(Pointee), Class(Cls) {}

2878public:
QualType getPointeeType() const { return PointeeType; }

/// Returns true if the member type (i.e. the pointee type) is a
/// function type rather than a data-member type.
bool isMemberFunctionPointer() const {
  return PointeeType->isFunctionProtoType();
}

/// Returns true if the member type (i.e. the pointee type) is a
/// data type rather than a function type.
bool isMemberDataPointer() const {
  return !PointeeType->isFunctionProtoType();
}

const Type *getClass() const { return Class; }
CXXRecordDecl *getMostRecentCXXRecordDecl() const;

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getPointeeType(), getClass());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType Pointee,
                    const Type *Class) {
  ID.AddPointer(Pointee.getAsOpaquePtr());
  ID.AddPointer(Class);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == MemberPointer;
}
2912};

2914/// Represents an array type, per C99 6.7.5.2 - Array Declarators.
2915class ArrayType : public Type, public llvm::FoldingSetNode {
2916public:
/// Capture whether this is a normal array (e.g. int X[4])
/// an array with a static size (e.g. int X[static 4]), or an array
/// with a star size (e.g. int X[*]).
/// 'static' is only allowed on function parameters.
enum ArraySizeModifier {
  Normal, Static, Star
};

2925private:
/// The element type of the array.
QualType ElementType;

2929protected:
friend class ASTContext; // ASTContext creates these.

ArrayType(TypeClass tc, QualType et, QualType can, ArraySizeModifier sm,
          unsigned tq, const Expr *sz = nullptr);

2935public:
QualType getElementType() const { return ElementType; }

ArraySizeModifier getSizeModifier() const {
  return ArraySizeModifier(ArrayTypeBits.SizeModifier);
}

Qualifiers getIndexTypeQualifiers() const {
  return Qualifiers::fromCVRMask(getIndexTypeCVRQualifiers());
}

unsigned getIndexTypeCVRQualifiers() const {
  return ArrayTypeBits.IndexTypeQuals;
}

static bool classof(const Type *T) {
  return T->getTypeClass() == ConstantArray ||
         T->getTypeClass() == VariableArray ||
         T->getTypeClass() == IncompleteArray ||
         T->getTypeClass() == DependentSizedArray;
}
2956};

2958/// Represents the canonical version of C arrays with a specified constant size.
2959/// For example, the canonical type for 'int A[4 + 4*100]' is a
2960/// ConstantArrayType where the element type is 'int' and the size is 404.
2961class ConstantArrayType final
  : public ArrayType,
    private llvm::TrailingObjects<ConstantArrayType, const Expr *> {
friend class ASTContext; // ASTContext creates these.
friend TrailingObjects;

llvm::APInt Size; // Allows us to unique the type.

ConstantArrayType(QualType et, QualType can, const llvm::APInt &size,
                  const Expr *sz, ArraySizeModifier sm, unsigned tq)
    : ArrayType(ConstantArray, et, can, sm, tq, sz), Size(size) {
  ConstantArrayTypeBits.HasStoredSizeExpr = sz != nullptr;
  if (ConstantArrayTypeBits.HasStoredSizeExpr) {
    assert(!can.isNull() && "canonical constant array should not have size")((!can.isNull() && "canonical constant array should not have size"
) ? static_cast<void> (0) : __assert_fail ("!can.isNull() && \"canonical constant array should not have size\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 2974, __PRETTY_FUNCTION__));
    *getTrailingObjects<const Expr*>() = sz;
  }
}

unsigned numTrailingObjects(OverloadToken<const Expr*>) const {
  return ConstantArrayTypeBits.HasStoredSizeExpr;
}

2983public:
const llvm::APInt &getSize() const { return Size; }
const Expr *getSizeExpr() const {
  return ConstantArrayTypeBits.HasStoredSizeExpr
             ? *getTrailingObjects<const Expr *>()
             : nullptr;
}
bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

/// Determine the number of bits required to address a member of
// an array with the given element type and number of elements.
static unsigned getNumAddressingBits(const ASTContext &Context,
                                     QualType ElementType,
                                     const llvm::APInt &NumElements);

/// Determine the maximum number of active bits that an array's size
/// can require, which limits the maximum size of the array.
static unsigned getMaxSizeBits(const ASTContext &Context);

void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) {
  Profile(ID, Ctx, getElementType(), getSize(), getSizeExpr(),
          getSizeModifier(), getIndexTypeCVRQualifiers());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx,
                    QualType ET, const llvm::APInt &ArraySize,
                    const Expr *SizeExpr, ArraySizeModifier SizeMod,
                    unsigned TypeQuals);

static bool classof(const Type *T) {
  return T->getTypeClass() == ConstantArray;
}
3016};

3018/// Represents a C array with an unspecified size.  For example 'int A[]' has
3019/// an IncompleteArrayType where the element type is 'int' and the size is
3020/// unspecified.
3021class IncompleteArrayType : public ArrayType {
friend class ASTContext; // ASTContext creates these.

IncompleteArrayType(QualType et, QualType can,
                    ArraySizeModifier sm, unsigned tq)
    : ArrayType(IncompleteArray, et, can, sm, tq) {}

3028public:
friend class StmtIteratorBase;

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == IncompleteArray;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getElementType(), getSizeModifier(),
          getIndexTypeCVRQualifiers());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType ET,
                    ArraySizeModifier SizeMod, unsigned TypeQuals) {
  ID.AddPointer(ET.getAsOpaquePtr());
  ID.AddInteger(SizeMod);
  ID.AddInteger(TypeQuals);
}
3049};

3051/// Represents a C array with a specified size that is not an
3052/// integer-constant-expression.  For example, 'int s[x+foo()]'.
3053/// Since the size expression is an arbitrary expression, we store it as such.
3054///
3055/// Note: VariableArrayType's aren't uniqued (since the expressions aren't) and
3056/// should not be: two lexically equivalent variable array types could mean
3057/// different things, for example, these variables do not have the same type
3058/// dynamically:
3059///
3060/// void foo(int x) {
3061///   int Y[x];
3062///   ++x;
3063///   int Z[x];
3064/// }
3065class VariableArrayType : public ArrayType {
friend class ASTContext; // ASTContext creates these.

/// An assignment-expression. VLA's are only permitted within
/// a function block.
Stmt *SizeExpr;

/// The range spanned by the left and right array brackets.
SourceRange Brackets;

VariableArrayType(QualType et, QualType can, Expr *e,
                  ArraySizeModifier sm, unsigned tq,
                  SourceRange brackets)
    : ArrayType(VariableArray, et, can, sm, tq, e),
      SizeExpr((Stmt*) e), Brackets(brackets) {}

3081public:
friend class StmtIteratorBase;

Expr *getSizeExpr() const {
  // We use C-style casts instead of cast<> here because we do not wish
  // to have a dependency of Type.h on Stmt.h/Expr.h.
  return (Expr*) SizeExpr;
}

SourceRange getBracketsRange() const { return Brackets; }
SourceLocation getLBracketLoc() const { return Brackets.getBegin(); }
SourceLocation getRBracketLoc() const { return Brackets.getEnd(); }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == VariableArray;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  llvm_unreachable("Cannot unique VariableArrayTypes.")::llvm::llvm_unreachable_internal("Cannot unique VariableArrayTypes."
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 3102);
}
3104};

3106/// Represents an array type in C++ whose size is a value-dependent expression.
3107///
3108/// For example:
3109/// \code
3110/// template<typename T, int Size>
3111/// class array {
3112///   T data[Size];
3113/// };
3114/// \endcode
3115///
3116/// For these types, we won't actually know what the array bound is
3117/// until template instantiation occurs, at which point this will
3118/// become either a ConstantArrayType or a VariableArrayType.
3119class DependentSizedArrayType : public ArrayType {
friend class ASTContext; // ASTContext creates these.

const ASTContext &Context;

/// An assignment expression that will instantiate to the
/// size of the array.
///
/// The expression itself might be null, in which case the array
/// type will have its size deduced from an initializer.
Stmt *SizeExpr;

/// The range spanned by the left and right array brackets.
SourceRange Brackets;

DependentSizedArrayType(const ASTContext &Context, QualType et, QualType can,
                        Expr *e, ArraySizeModifier sm, unsigned tq,
                        SourceRange brackets);

3138public:
friend class StmtIteratorBase;

Expr *getSizeExpr() const {
  // We use C-style casts instead of cast<> here because we do not wish
  // to have a dependency of Type.h on Stmt.h/Expr.h.
  return (Expr*) SizeExpr;
}

SourceRange getBracketsRange() const { return Brackets; }
SourceLocation getLBracketLoc() const { return Brackets.getBegin(); }
SourceLocation getRBracketLoc() const { return Brackets.getEnd(); }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == DependentSizedArray;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, Context, getElementType(),
          getSizeModifier(), getIndexTypeCVRQualifiers(), getSizeExpr());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
                    QualType ET, ArraySizeModifier SizeMod,
                    unsigned TypeQuals, Expr *E);
3166};

3168/// Represents an extended address space qualifier where the input address space
3169/// value is dependent. Non-dependent address spaces are not represented with a
3170/// special Type subclass; they are stored on an ExtQuals node as part of a QualType.
3171///
3172/// For example:
3173/// \code
3174/// template<typename T, int AddrSpace>
3175/// class AddressSpace {
3176///   typedef T __attribute__((address_space(AddrSpace))) type;
3177/// }
3178/// \endcode
3179class DependentAddressSpaceType : public Type, public llvm::FoldingSetNode {
friend class ASTContext;

const ASTContext &Context;
Expr *AddrSpaceExpr;
QualType PointeeType;
SourceLocation loc;

DependentAddressSpaceType(const ASTContext &Context, QualType PointeeType,
                          QualType can, Expr *AddrSpaceExpr,
                          SourceLocation loc);

3191public:
Expr *getAddrSpaceExpr() const { return AddrSpaceExpr; }
QualType getPointeeType() const { return PointeeType; }
SourceLocation getAttributeLoc() const { return loc; }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == DependentAddressSpace;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, Context, getPointeeType(), getAddrSpaceExpr());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
                    QualType PointeeType, Expr *AddrSpaceExpr);
3209};

3211/// Represents an extended vector type where either the type or size is
3212/// dependent.
3213///
3214/// For example:
3215/// \code
3216/// template<typename T, int Size>
3217/// class vector {
3218///   typedef T __attribute__((ext_vector_type(Size))) type;
3219/// }
3220/// \endcode
3221class DependentSizedExtVectorType : public Type, public llvm::FoldingSetNode {
friend class ASTContext;

const ASTContext &Context;
Expr *SizeExpr;

/// The element type of the array.
QualType ElementType;

SourceLocation loc;

DependentSizedExtVectorType(const ASTContext &Context, QualType ElementType,
                            QualType can, Expr *SizeExpr, SourceLocation loc);

3235public:
Expr *getSizeExpr() const { return SizeExpr; }
QualType getElementType() const { return ElementType; }
SourceLocation getAttributeLoc() const { return loc; }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == DependentSizedExtVector;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, Context, getElementType(), getSizeExpr());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
                    QualType ElementType, Expr *SizeExpr);
3253};


3256/// Represents a GCC generic vector type. This type is created using
3257/// __attribute__((vector_size(n)), where "n" specifies the vector size in
3258/// bytes; or from an Altivec __vector or vector declaration.
3259/// Since the constructor takes the number of vector elements, the
3260/// client is responsible for converting the size into the number of elements.
3261class VectorType : public Type, public llvm::FoldingSetNode {
3262public:
enum VectorKind {
  /// not a target-specific vector type
  GenericVector,

  /// is AltiVec vector
  AltiVecVector,

  /// is AltiVec 'vector Pixel'
  AltiVecPixel,

  /// is AltiVec 'vector bool ...'
  AltiVecBool,

  /// is ARM Neon vector
  NeonVector,

  /// is ARM Neon polynomial vector
  NeonPolyVector
};

3283protected:
friend class ASTContext; // ASTContext creates these.

/// The element type of the vector.
QualType ElementType;

VectorType(QualType vecType, unsigned nElements, QualType canonType,
           VectorKind vecKind);

VectorType(TypeClass tc, QualType vecType, unsigned nElements,
           QualType canonType, VectorKind vecKind);

3295public:
QualType getElementType() const { return ElementType; }
unsigned getNumElements() const { return VectorTypeBits.NumElements; }

static bool isVectorSizeTooLarge(unsigned NumElements) {
  return NumElements > VectorTypeBitfields::MaxNumElements;
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

VectorKind getVectorKind() const {
  return VectorKind(VectorTypeBits.VecKind);
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getElementType(), getNumElements(),
          getTypeClass(), getVectorKind());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType ElementType,
                    unsigned NumElements, TypeClass TypeClass,
                    VectorKind VecKind) {
  ID.AddPointer(ElementType.getAsOpaquePtr());
  ID.AddInteger(NumElements);
  ID.AddInteger(TypeClass);
  ID.AddInteger(VecKind);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == Vector || T->getTypeClass() == ExtVector;
}
3327};

3329/// Represents a vector type where either the type or size is dependent.
3330////
3331/// For example:
3332/// \code
3333/// template<typename T, int Size>
3334/// class vector {
3335///   typedef T __attribute__((vector_size(Size))) type;
3336/// }
3337/// \endcode
3338class DependentVectorType : public Type, public llvm::FoldingSetNode {
friend class ASTContext;

const ASTContext &Context;
QualType ElementType;
Expr *SizeExpr;
SourceLocation Loc;

DependentVectorType(const ASTContext &Context, QualType ElementType,
                         QualType CanonType, Expr *SizeExpr,
                         SourceLocation Loc, VectorType::VectorKind vecKind);

3350public:
Expr *getSizeExpr() const { return SizeExpr; }
QualType getElementType() const { return ElementType; }
SourceLocation getAttributeLoc() const { return Loc; }
VectorType::VectorKind getVectorKind() const {
  return VectorType::VectorKind(VectorTypeBits.VecKind);
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == DependentVector;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, Context, getElementType(), getSizeExpr(), getVectorKind());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
                    QualType ElementType, const Expr *SizeExpr,
                    VectorType::VectorKind VecKind);
3372};

3374/// ExtVectorType - Extended vector type. This type is created using
3375/// __attribute__((ext_vector_type(n)), where "n" is the number of elements.
3376/// Unlike vector_size, ext_vector_type is only allowed on typedef's. This
3377/// class enables syntactic extensions, like Vector Components for accessing
3378/// points (as .xyzw), colors (as .rgba), and textures (modeled after OpenGL
3379/// Shading Language).
3380class ExtVectorType : public VectorType {
friend class ASTContext; // ASTContext creates these.

ExtVectorType(QualType vecType, unsigned nElements, QualType canonType)
    : VectorType(ExtVector, vecType, nElements, canonType, GenericVector) {}

3386public:
static int getPointAccessorIdx(char c) {
  switch (c) {
  default: return -1;
  case 'x': case 'r': return 0;
  case 'y': case 'g': return 1;
  case 'z': case 'b': return 2;
  case 'w': case 'a': return 3;
  }
}

static int getNumericAccessorIdx(char c) {
  switch (c) {
    default: return -1;
    case '0': return 0;
    case '1': return 1;
    case '2': return 2;
    case '3': return 3;
    case '4': return 4;
    case '5': return 5;
    case '6': return 6;
    case '7': return 7;
    case '8': return 8;
    case '9': return 9;
    case 'A':
    case 'a': return 10;
    case 'B':
    case 'b': return 11;
    case 'C':
    case 'c': return 12;
    case 'D':
    case 'd': return 13;
    case 'E':
    case 'e': return 14;
    case 'F':
    case 'f': return 15;
  }
}

static int getAccessorIdx(char c, bool isNumericAccessor) {
  if (isNumericAccessor)
    return getNumericAccessorIdx(c);
  else
    return getPointAccessorIdx(c);
}

bool isAccessorWithinNumElements(char c, bool isNumericAccessor) const {
  if (int idx = getAccessorIdx(c, isNumericAccessor)+1)
    return unsigned(idx-1) < getNumElements();
  return false;
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == ExtVector;
}
3444};

3446/// FunctionType - C99 6.7.5.3 - Function Declarators.  This is the common base
3447/// class of FunctionNoProtoType and FunctionProtoType.
3448class FunctionType : public Type {
// The type returned by the function.
QualType ResultType;

3452public:
/// Interesting information about a specific parameter that can't simply
/// be reflected in parameter's type. This is only used by FunctionProtoType
/// but is in FunctionType to make this class available during the
/// specification of the bases of FunctionProtoType.
///
/// It makes sense to model language features this way when there's some
/// sort of parameter-specific override (such as an attribute) that
/// affects how the function is called.  For example, the ARC ns_consumed
/// attribute changes whether a parameter is passed at +0 (the default)
/// or +1 (ns_consumed).  This must be reflected in the function type,
/// but isn't really a change to the parameter type.
///
/// One serious disadvantage of modelling language features this way is
/// that they generally do not work with language features that attempt
/// to destructure types.  For example, template argument deduction will
/// not be able to match a parameter declared as
///   T (*)(U)
/// against an argument of type
///   void (*)(__attribute__((ns_consumed)) id)
/// because the substitution of T=void, U=id into the former will
/// not produce the latter.
class ExtParameterInfo {
  enum {
    ABIMask = 0x0F,
    IsConsumed = 0x10,
    HasPassObjSize = 0x20,
    IsNoEscape = 0x40,
  };
  unsigned char Data = 0;

public:
  ExtParameterInfo() = default;

  /// Return the ABI treatment of this parameter.
  ParameterABI getABI() const { return ParameterABI(Data & ABIMask); }
  ExtParameterInfo withABI(ParameterABI kind) const {
    ExtParameterInfo copy = *this;
    copy.Data = (copy.Data & ~ABIMask) | unsigned(kind);
    return copy;
  }

  /// Is this parameter considered "consumed" by Objective-C ARC?
  /// Consumed parameters must have retainable object type.
  bool isConsumed() const { return (Data & IsConsumed); }
  ExtParameterInfo withIsConsumed(bool consumed) const {
    ExtParameterInfo copy = *this;
    if (consumed)
      copy.Data |= IsConsumed;
    else
      copy.Data &= ~IsConsumed;
    return copy;
  }

  bool hasPassObjectSize() const { return Data & HasPassObjSize; }
  ExtParameterInfo withHasPassObjectSize() const {
    ExtParameterInfo Copy = *this;
    Copy.Data |= HasPassObjSize;
    return Copy;
  }

  bool isNoEscape() const { return Data & IsNoEscape; }
  ExtParameterInfo withIsNoEscape(bool NoEscape) const {
    ExtParameterInfo Copy = *this;
    if (NoEscape)
      Copy.Data |= IsNoEscape;
    else
      Copy.Data &= ~IsNoEscape;
    return Copy;
  }

  unsigned char getOpaqueValue() const { return Data; }
  static ExtParameterInfo getFromOpaqueValue(unsigned char data) {
    ExtParameterInfo result;
    result.Data = data;
    return result;
  }

  friend bool operator==(ExtParameterInfo lhs, ExtParameterInfo rhs) {
    return lhs.Data == rhs.Data;
  }

  friend bool operator!=(ExtParameterInfo lhs, ExtParameterInfo rhs) {
    return lhs.Data != rhs.Data;
  }
};

/// A class which abstracts out some details necessary for
/// making a call.
///
/// It is not actually used directly for storing this information in
/// a FunctionType, although FunctionType does currently use the
/// same bit-pattern.
///
// If you add a field (say Foo), other than the obvious places (both,
// constructors, compile failures), what you need to update is
// * Operator==
// * getFoo
// * withFoo
// * functionType. Add Foo, getFoo.
// * ASTContext::getFooType
// * ASTContext::mergeFunctionTypes
// * FunctionNoProtoType::Profile
// * FunctionProtoType::Profile
// * TypePrinter::PrintFunctionProto
// * AST read and write
// * Codegen
class ExtInfo {
  friend class FunctionType;

  // Feel free to rearrange or add bits, but if you go over 12,
  // you'll need to adjust both the Bits field below and
  // Type::FunctionTypeBitfields.

  //   |  CC  |noreturn|produces|nocallersavedregs|regparm|nocfcheck|
  //   |0 .. 4|   5    |    6   |       7         |8 .. 10|    11   |
  //
  // regparm is either 0 (no regparm attribute) or the regparm value+1.
  enum { CallConvMask = 0x1F };
  enum { NoReturnMask = 0x20 };
  enum { ProducesResultMask = 0x40 };
  enum { NoCallerSavedRegsMask = 0x80 };
  enum { NoCfCheckMask = 0x800 };
  enum {
    RegParmMask = ~(CallConvMask | NoReturnMask | ProducesResultMask |
                    NoCallerSavedRegsMask | NoCfCheckMask),
    RegParmOffset = 8
  }; // Assumed to be the last field
  uint16_t Bits = CC_C;

  ExtInfo(unsigned Bits) : Bits(static_cast<uint16_t>(Bits)) {}

 public:
   // Constructor with no defaults. Use this when you know that you
   // have all the elements (when reading an AST file for example).
   ExtInfo(bool noReturn, bool hasRegParm, unsigned regParm, CallingConv cc,
           bool producesResult, bool noCallerSavedRegs, bool NoCfCheck) {
     assert((!hasRegParm || regParm < 7) && "Invalid regparm value")(((!hasRegParm || regParm < 7) && "Invalid regparm value"
) ? static_cast<void> (0) : __assert_fail ("(!hasRegParm || regParm < 7) && \"Invalid regparm value\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 3589, __PRETTY_FUNCTION__));
     Bits = ((unsigned)cc) | (noReturn ? NoReturnMask : 0) |
            (producesResult ? ProducesResultMask : 0) |
            (noCallerSavedRegs ? NoCallerSavedRegsMask : 0) |
            (hasRegParm ? ((regParm + 1) << RegParmOffset) : 0) |
            (NoCfCheck ? NoCfCheckMask : 0);
  }

  // Constructor with all defaults. Use when for example creating a
  // function known to use defaults.
  ExtInfo() = default;

  // Constructor with just the calling convention, which is an important part
  // of the canonical type.
  ExtInfo(CallingConv CC) : Bits(CC) {}

  bool getNoReturn() const { return Bits & NoReturnMask; }
  bool getProducesResult() const { return Bits & ProducesResultMask; }
  bool getNoCallerSavedRegs() const { return Bits & NoCallerSavedRegsMask; }
  bool getNoCfCheck() const { return Bits & NoCfCheckMask; }
  bool getHasRegParm() const { return (Bits >> RegParmOffset) != 0; }

  unsigned getRegParm() const {
    unsigned RegParm = (Bits & RegParmMask) >> RegParmOffset;
    if (RegParm > 0)
      --RegParm;
    return RegParm;
  }

  CallingConv getCC() const { return CallingConv(Bits & CallConvMask); }

  bool operator==(ExtInfo Other) const {
    return Bits == Other.Bits;
  }
  bool operator!=(ExtInfo Other) const {
    return Bits != Other.Bits;
  }

  // Note that we don't have setters. That is by design, use
  // the following with methods instead of mutating these objects.

  ExtInfo withNoReturn(bool noReturn) const {
    if (noReturn)
      return ExtInfo(Bits | NoReturnMask);
    else
      return ExtInfo(Bits & ~NoReturnMask);
  }

  ExtInfo withProducesResult(bool producesResult) const {
    if (producesResult)
      return ExtInfo(Bits | ProducesResultMask);
    else
      return ExtInfo(Bits & ~ProducesResultMask);
  }

  ExtInfo withNoCallerSavedRegs(bool noCallerSavedRegs) const {
    if (noCallerSavedRegs)
      return ExtInfo(Bits | NoCallerSavedRegsMask);
    else
      return ExtInfo(Bits & ~NoCallerSavedRegsMask);
  }

  ExtInfo withNoCfCheck(bool noCfCheck) const {
    if (noCfCheck)
      return ExtInfo(Bits | NoCfCheckMask);
    else
      return ExtInfo(Bits & ~NoCfCheckMask);
  }

  ExtInfo withRegParm(unsigned RegParm) const {
    assert(RegParm < 7 && "Invalid regparm value")((RegParm < 7 && "Invalid regparm value") ? static_cast
<void> (0) : __assert_fail ("RegParm < 7 && \"Invalid regparm value\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 3659, __PRETTY_FUNCTION__));
    return ExtInfo((Bits & ~RegParmMask) |
                   ((RegParm + 1) << RegParmOffset));
  }

  ExtInfo withCallingConv(CallingConv cc) const {
    return ExtInfo((Bits & ~CallConvMask) | (unsigned) cc);
  }

  void Profile(llvm::FoldingSetNodeID &ID) const {
    ID.AddInteger(Bits);
  }
};

/// A simple holder for a QualType representing a type in an
/// exception specification. Unfortunately needed by FunctionProtoType
/// because TrailingObjects cannot handle repeated types.
struct ExceptionType { QualType Type; };

/// A simple holder for various uncommon bits which do not fit in
/// FunctionTypeBitfields. Aligned to alignof(void *) to maintain the
/// alignment of subsequent objects in TrailingObjects. You must update
/// hasExtraBitfields in FunctionProtoType after adding extra data here.
struct alignas(void *) FunctionTypeExtraBitfields {
  /// The number of types in the exception specification.
  /// A whole unsigned is not needed here and according to
  /// [implimits] 8 bits would be enough here.
  unsigned NumExceptionType;
};

3689protected:
FunctionType(TypeClass tc, QualType res,
             QualType Canonical, bool Dependent,
             bool InstantiationDependent,
             bool VariablyModified, bool ContainsUnexpandedParameterPack,
             ExtInfo Info)
    : Type(tc, Canonical, Dependent, InstantiationDependent, VariablyModified,
           ContainsUnexpandedParameterPack),
      ResultType(res) {
  FunctionTypeBits.ExtInfo = Info.Bits;
}

Qualifiers getFastTypeQuals() const {
  return Qualifiers::fromFastMask(FunctionTypeBits.FastTypeQuals);
}

3705public:
QualType getReturnType() const { return ResultType; }

bool getHasRegParm() const { return getExtInfo().getHasRegParm(); }
unsigned getRegParmType() const { return getExtInfo().getRegParm(); }

/// Determine whether this function type includes the GNU noreturn
/// attribute. The C++11 [[noreturn]] attribute does not affect the function
/// type.
bool getNoReturnAttr() const { return getExtInfo().getNoReturn(); }

CallingConv getCallConv() const { return getExtInfo().getCC(); }
ExtInfo getExtInfo() const { return ExtInfo(FunctionTypeBits.ExtInfo); }

static_assert((~Qualifiers::FastMask & Qualifiers::CVRMask) == 0,
              "Const, volatile and restrict are assumed to be a subset of "
              "the fast qualifiers.");

bool isConst() const { return getFastTypeQuals().hasConst(); }
bool isVolatile() const { return getFastTypeQuals().hasVolatile(); }
bool isRestrict() const { return getFastTypeQuals().hasRestrict(); }

/// Determine the type of an expression that calls a function of
/// this type.
QualType getCallResultType(const ASTContext &Context) const {
  return getReturnType().getNonLValueExprType(Context);
}

static StringRef getNameForCallConv(CallingConv CC);

static bool classof(const Type *T) {
  return T->getTypeClass() == FunctionNoProto ||
         T->getTypeClass() == FunctionProto;
}
3739};

3741/// Represents a K&R-style 'int foo()' function, which has
3742/// no information available about its arguments.
3743class FunctionNoProtoType : public FunctionType, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

FunctionNoProtoType(QualType Result, QualType Canonical, ExtInfo Info)
    : FunctionType(FunctionNoProto, Result, Canonical,
                   /*Dependent=*/false, /*InstantiationDependent=*/false,
                   Result->isVariablyModifiedType(),
                   /*ContainsUnexpandedParameterPack=*/false, Info) {}

3752public:
// No additional state past what FunctionType provides.

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getReturnType(), getExtInfo());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType ResultType,
                    ExtInfo Info) {
  Info.Profile(ID);
  ID.AddPointer(ResultType.getAsOpaquePtr());
}

static bool classof(const Type *T) {
  return T->getTypeClass() == FunctionNoProto;
}
3771};

3773/// Represents a prototype with parameter type info, e.g.
3774/// 'int foo(int)' or 'int foo(void)'.  'void' is represented as having no
3775/// parameters, not as having a single void parameter. Such a type can have
3776/// an exception specification, but this specification is not part of the
3777/// canonical type. FunctionProtoType has several trailing objects, some of
3778/// which optional. For more information about the trailing objects see
3779/// the first comment inside FunctionProtoType.
3780class FunctionProtoType final
  : public FunctionType,
    public llvm::FoldingSetNode,
    private llvm::TrailingObjects<
        FunctionProtoType, QualType, SourceLocation,
        FunctionType::FunctionTypeExtraBitfields, FunctionType::ExceptionType,
        Expr *, FunctionDecl *, FunctionType::ExtParameterInfo, Qualifiers> {
friend class ASTContext; // ASTContext creates these.
friend TrailingObjects;

// FunctionProtoType is followed by several trailing objects, some of
// which optional. They are in order:
//
// * An array of getNumParams() QualType holding the parameter types.
//   Always present. Note that for the vast majority of FunctionProtoType,
//   these will be the only trailing objects.
//
// * Optionally if the function is variadic, the SourceLocation of the
//   ellipsis.
//
// * Optionally if some extra data is stored in FunctionTypeExtraBitfields
//   (see FunctionTypeExtraBitfields and FunctionTypeBitfields):
//   a single FunctionTypeExtraBitfields. Present if and only if
//   hasExtraBitfields() is true.
//
// * Optionally exactly one of:
//   * an array of getNumExceptions() ExceptionType,
//   * a single Expr *,
//   * a pair of FunctionDecl *,
//   * a single FunctionDecl *
//   used to store information about the various types of exception
//   specification. See getExceptionSpecSize for the details.
//
// * Optionally an array of getNumParams() ExtParameterInfo holding
//   an ExtParameterInfo for each of the parameters. Present if and
//   only if hasExtParameterInfos() is true.
//
// * Optionally a Qualifiers object to represent extra qualifiers that can't
//   be represented by FunctionTypeBitfields.FastTypeQuals. Present if and only
//   if hasExtQualifiers() is true.
//
// The optional FunctionTypeExtraBitfields has to be before the data
// related to the exception specification since it contains the number
// of exception types.
//
// We put the ExtParameterInfos last.  If all were equal, it would make
// more sense to put these before the exception specification, because
// it's much easier to skip past them compared to the elaborate switch
// required to skip the exception specification.  However, all is not
// equal; ExtParameterInfos are used to model very uncommon features,
// and it's better not to burden the more common paths.

3832public:
/// Holds information about the various types of exception specification.
/// ExceptionSpecInfo is not stored as such in FunctionProtoType but is
/// used to group together the various bits of information about the
/// exception specification.
struct ExceptionSpecInfo {
  /// The kind of exception specification this is.
  ExceptionSpecificationType Type = EST_None;

  /// Explicitly-specified list of exception types.
  ArrayRef<QualType> Exceptions;

  /// Noexcept expression, if this is a computed noexcept specification.
  Expr *NoexceptExpr = nullptr;

  /// The function whose exception specification this is, for
  /// EST_Unevaluated and EST_Uninstantiated.
  FunctionDecl *SourceDecl = nullptr;

  /// The function template whose exception specification this is instantiated
  /// from, for EST_Uninstantiated.
  FunctionDecl *SourceTemplate = nullptr;

  ExceptionSpecInfo() = default;

  ExceptionSpecInfo(ExceptionSpecificationType EST) : Type(EST) {}
};

/// Extra information about a function prototype. ExtProtoInfo is not
/// stored as such in FunctionProtoType but is used to group together
/// the various bits of extra information about a function prototype.
struct ExtProtoInfo {
  FunctionType::ExtInfo ExtInfo;
  bool Variadic : 1;
  bool HasTrailingReturn : 1;
  Qualifiers TypeQuals;
  RefQualifierKind RefQualifier = RQ_None;
  ExceptionSpecInfo ExceptionSpec;
  const ExtParameterInfo *ExtParameterInfos = nullptr;
  SourceLocation EllipsisLoc;

  ExtProtoInfo() : Variadic(false), HasTrailingReturn(false) {}

  ExtProtoInfo(CallingConv CC)
      : ExtInfo(CC), Variadic(false), HasTrailingReturn(false) {}

  ExtProtoInfo withExceptionSpec(const ExceptionSpecInfo &ESI) {
    ExtProtoInfo Result(*this);
    Result.ExceptionSpec = ESI;
    return Result;
  }
};

3885private:
unsigned numTrailingObjects(OverloadToken<QualType>) const {
  return getNumParams();
}

unsigned numTrailingObjects(OverloadToken<SourceLocation>) const {
  return isVariadic();
}

unsigned numTrailingObjects(OverloadToken<FunctionTypeExtraBitfields>) const {
  return hasExtraBitfields();
}

unsigned numTrailingObjects(OverloadToken<ExceptionType>) const {
  return getExceptionSpecSize().NumExceptionType;
}

unsigned numTrailingObjects(OverloadToken<Expr *>) const {
  return getExceptionSpecSize().NumExprPtr;
}

unsigned numTrailingObjects(OverloadToken<FunctionDecl *>) const {
  return getExceptionSpecSize().NumFunctionDeclPtr;
}

unsigned numTrailingObjects(OverloadToken<ExtParameterInfo>) const {
  return hasExtParameterInfos() ? getNumParams() : 0;
}

/// Determine whether there are any argument types that
/// contain an unexpanded parameter pack.
static bool containsAnyUnexpandedParameterPack(const QualType *ArgArray,
                                               unsigned numArgs) {
  for (unsigned Idx = 0; Idx < numArgs; ++Idx)
    if (ArgArray[Idx]->containsUnexpandedParameterPack())
      return true;

  return false;
}

FunctionProtoType(QualType result, ArrayRef<QualType> params,
                  QualType canonical, const ExtProtoInfo &epi);

/// This struct is returned by getExceptionSpecSize and is used to
/// translate an ExceptionSpecificationType to the number and kind
/// of trailing objects related to the exception specification.
struct ExceptionSpecSizeHolder {
  unsigned NumExceptionType;
  unsigned NumExprPtr;
  unsigned NumFunctionDeclPtr;
};

/// Return the number and kind of trailing objects
/// related to the exception specification.
static ExceptionSpecSizeHolder
getExceptionSpecSize(ExceptionSpecificationType EST, unsigned NumExceptions) {
  switch (EST) {
  case EST_None:
  case EST_DynamicNone:
  case EST_MSAny:
  case EST_BasicNoexcept:
  case EST_Unparsed:
  case EST_NoThrow:
    return {0, 0, 0};

  case EST_Dynamic:
    return {NumExceptions, 0, 0};

  case EST_DependentNoexcept:
  case EST_NoexceptFalse:
  case EST_NoexceptTrue:
    return {0, 1, 0};

  case EST_Uninstantiated:
    return {0, 0, 2};

  case EST_Unevaluated:
    return {0, 0, 1};
  }
  llvm_unreachable("bad exception specification kind")::llvm::llvm_unreachable_internal("bad exception specification kind"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 3964);
}

/// Return the number and kind of trailing objects
/// related to the exception specification.
ExceptionSpecSizeHolder getExceptionSpecSize() const {
  return getExceptionSpecSize(getExceptionSpecType(), getNumExceptions());
}

/// Whether the trailing FunctionTypeExtraBitfields is present.
static bool hasExtraBitfields(ExceptionSpecificationType EST) {
  // If the exception spec type is EST_Dynamic then we have > 0 exception
  // types and the exact number is stored in FunctionTypeExtraBitfields.
  return EST == EST_Dynamic;
}

/// Whether the trailing FunctionTypeExtraBitfields is present.
bool hasExtraBitfields() const {
  return hasExtraBitfields(getExceptionSpecType());
}

bool hasExtQualifiers() const {
  return FunctionTypeBits.HasExtQuals;
}

3989public:
unsigned getNumParams() const { return FunctionTypeBits.NumParams; }

QualType getParamType(unsigned i) const {
  assert(i < getNumParams() && "invalid parameter index")((i < getNumParams() && "invalid parameter index")
 ? static_cast<void> (0) : __assert_fail ("i < getNumParams() && \"invalid parameter index\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 3993, __PRETTY_FUNCTION__));
  return param_type_begin()[i];
}

ArrayRef<QualType> getParamTypes() const {
  return llvm::makeArrayRef(param_type_begin(), param_type_end());
}

ExtProtoInfo getExtProtoInfo() const {
  ExtProtoInfo EPI;
  EPI.ExtInfo = getExtInfo();
  EPI.Variadic = isVariadic();
  EPI.EllipsisLoc = getEllipsisLoc();
  EPI.HasTrailingReturn = hasTrailingReturn();
  EPI.ExceptionSpec = getExceptionSpecInfo();
  EPI.TypeQuals = getMethodQuals();
  EPI.RefQualifier = getRefQualifier();
  EPI.ExtParameterInfos = getExtParameterInfosOrNull();
  return EPI;
}

/// Get the kind of exception specification on this function.
ExceptionSpecificationType getExceptionSpecType() const {
  return static_cast<ExceptionSpecificationType>(
      FunctionTypeBits.ExceptionSpecType);
}

/// Return whether this function has any kind of exception spec.
bool hasExceptionSpec() const { return getExceptionSpecType() != EST_None; }

/// Return whether this function has a dynamic (throw) exception spec.
bool hasDynamicExceptionSpec() const {
  return isDynamicExceptionSpec(getExceptionSpecType());
}

/// Return whether this function has a noexcept exception spec.
bool hasNoexceptExceptionSpec() const {
  return isNoexceptExceptionSpec(getExceptionSpecType());
}

/// Return whether this function has a dependent exception spec.
bool hasDependentExceptionSpec() const;

/// Return whether this function has an instantiation-dependent exception
/// spec.
bool hasInstantiationDependentExceptionSpec() const;

/// Return all the available information about this type's exception spec.
ExceptionSpecInfo getExceptionSpecInfo() const {
  ExceptionSpecInfo Result;
  Result.Type = getExceptionSpecType();
  if (Result.Type == EST_Dynamic) {
    Result.Exceptions = exceptions();
  } else if (isComputedNoexcept(Result.Type)) {
    Result.NoexceptExpr = getNoexceptExpr();
  } else if (Result.Type == EST_Uninstantiated) {
    Result.SourceDecl = getExceptionSpecDecl();
    Result.SourceTemplate = getExceptionSpecTemplate();
  } else if (Result.Type == EST_Unevaluated) {
    Result.SourceDecl = getExceptionSpecDecl();
  }
  return Result;
}

/// Return the number of types in the exception specification.
unsigned getNumExceptions() const {
  return getExceptionSpecType() == EST_Dynamic
             ? getTrailingObjects<FunctionTypeExtraBitfields>()
                   ->NumExceptionType
             : 0;
}

/// Return the ith exception type, where 0 <= i < getNumExceptions().
QualType getExceptionType(unsigned i) const {
  assert(i < getNumExceptions() && "Invalid exception number!")((i < getNumExceptions() && "Invalid exception number!"
) ? static_cast<void> (0) : __assert_fail ("i < getNumExceptions() && \"Invalid exception number!\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4067, __PRETTY_FUNCTION__));
  return exception_begin()[i];
}

/// Return the expression inside noexcept(expression), or a null pointer
/// if there is none (because the exception spec is not of this form).
Expr *getNoexceptExpr() const {
  if (!isComputedNoexcept(getExceptionSpecType()))
    return nullptr;
  return *getTrailingObjects<Expr *>();
}

/// If this function type has an exception specification which hasn't
/// been determined yet (either because it has not been evaluated or because
/// it has not been instantiated), this is the function whose exception
/// specification is represented by this type.
FunctionDecl *getExceptionSpecDecl() const {
  if (getExceptionSpecType() != EST_Uninstantiated &&
      getExceptionSpecType() != EST_Unevaluated)
    return nullptr;
  return getTrailingObjects<FunctionDecl *>()[0];
}

/// If this function type has an uninstantiated exception
/// specification, this is the function whose exception specification
/// should be instantiated to find the exception specification for
/// this type.
FunctionDecl *getExceptionSpecTemplate() const {
  if (getExceptionSpecType() != EST_Uninstantiated)
    return nullptr;
  return getTrailingObjects<FunctionDecl *>()[1];
}

/// Determine whether this function type has a non-throwing exception
/// specification.
CanThrowResult canThrow() const;

/// Determine whether this function type has a non-throwing exception
/// specification. If this depends on template arguments, returns
/// \c ResultIfDependent.
bool isNothrow(bool ResultIfDependent = false) const {
  return ResultIfDependent ? canThrow() != CT_Can : canThrow() == CT_Cannot;
}

/// Whether this function prototype is variadic.
bool isVariadic() const { return FunctionTypeBits.Variadic; }

SourceLocation getEllipsisLoc() const {
  return isVariadic() ? *getTrailingObjects<SourceLocation>()
                      : SourceLocation();
}

/// Determines whether this function prototype contains a
/// parameter pack at the end.
///
/// A function template whose last parameter is a parameter pack can be
/// called with an arbitrary number of arguments, much like a variadic
/// function.
bool isTemplateVariadic() const;

/// Whether this function prototype has a trailing return type.
bool hasTrailingReturn() const { return FunctionTypeBits.HasTrailingReturn; }

Qualifiers getMethodQuals() const {
  if (hasExtQualifiers())
    return *getTrailingObjects<Qualifiers>();
  else
    return getFastTypeQuals();
}

/// Retrieve the ref-qualifier associated with this function type.
RefQualifierKind getRefQualifier() const {
  return static_cast<RefQualifierKind>(FunctionTypeBits.RefQualifier);
}

using param_type_iterator = const QualType *;
using param_type_range = llvm::iterator_range<param_type_iterator>;

param_type_range param_types() const {
  return param_type_range(param_type_begin(), param_type_end());
}

param_type_iterator param_type_begin() const {
  return getTrailingObjects<QualType>();
}

param_type_iterator param_type_end() const {
  return param_type_begin() + getNumParams();
}

using exception_iterator = const QualType *;

ArrayRef<QualType> exceptions() const {
  return llvm::makeArrayRef(exception_begin(), exception_end());
}

exception_iterator exception_begin() const {
  return reinterpret_cast<exception_iterator>(
      getTrailingObjects<ExceptionType>());
}

exception_iterator exception_end() const {
  return exception_begin() + getNumExceptions();
}

/// Is there any interesting extra information for any of the parameters
/// of this function type?
bool hasExtParameterInfos() const {
  return FunctionTypeBits.HasExtParameterInfos;
}

ArrayRef<ExtParameterInfo> getExtParameterInfos() const {
  assert(hasExtParameterInfos())((hasExtParameterInfos()) ? static_cast<void> (0) : __assert_fail
 ("hasExtParameterInfos()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4179, __PRETTY_FUNCTION__));
  return ArrayRef<ExtParameterInfo>(getTrailingObjects<ExtParameterInfo>(),
                                    getNumParams());
}

/// Return a pointer to the beginning of the array of extra parameter
/// information, if present, or else null if none of the parameters
/// carry it.  This is equivalent to getExtProtoInfo().ExtParameterInfos.
const ExtParameterInfo *getExtParameterInfosOrNull() const {
  if (!hasExtParameterInfos())
    return nullptr;
  return getTrailingObjects<ExtParameterInfo>();
}

ExtParameterInfo getExtParameterInfo(unsigned I) const {
  assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range"
) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4194, __PRETTY_FUNCTION__));
  if (hasExtParameterInfos())
    return getTrailingObjects<ExtParameterInfo>()[I];
  return ExtParameterInfo();
}

ParameterABI getParameterABI(unsigned I) const {
  assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range"
) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4201, __PRETTY_FUNCTION__));
  if (hasExtParameterInfos())
    return getTrailingObjects<ExtParameterInfo>()[I].getABI();
  return ParameterABI::Ordinary;
}

bool isParamConsumed(unsigned I) const {
  assert(I < getNumParams() && "parameter index out of range")((I < getNumParams() && "parameter index out of range"
) ? static_cast<void> (0) : __assert_fail ("I < getNumParams() && \"parameter index out of range\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4208, __PRETTY_FUNCTION__));
  if (hasExtParameterInfos())
    return getTrailingObjects<ExtParameterInfo>()[I].isConsumed();
  return false;
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void printExceptionSpecification(raw_ostream &OS,
                                 const PrintingPolicy &Policy) const;

static bool classof(const Type *T) {
  return T->getTypeClass() == FunctionProto;
}

void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx);
static void Profile(llvm::FoldingSetNodeID &ID, QualType Result,
                    param_type_iterator ArgTys, unsigned NumArgs,
                    const ExtProtoInfo &EPI, const ASTContext &Context,
                    bool Canonical);
4229};

4231/// Represents the dependent type named by a dependently-scoped
4232/// typename using declaration, e.g.
4233///   using typename Base<T>::foo;
4234///
4235/// Template instantiation turns these into the underlying type.
4236class UnresolvedUsingType : public Type {
friend class ASTContext; // ASTContext creates these.

UnresolvedUsingTypenameDecl *Decl;

UnresolvedUsingType(const UnresolvedUsingTypenameDecl *D)
    : Type(UnresolvedUsing, QualType(), true, true, false,
           /*ContainsUnexpandedParameterPack=*/false),
      Decl(const_cast<UnresolvedUsingTypenameDecl*>(D)) {}

4246public:
UnresolvedUsingTypenameDecl *getDecl() const { return Decl; }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == UnresolvedUsing;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  return Profile(ID, Decl);
}

static void Profile(llvm::FoldingSetNodeID &ID,
                    UnresolvedUsingTypenameDecl *D) {
  ID.AddPointer(D);
}
4264};

4266class TypedefType : public Type {
TypedefNameDecl *Decl;

4269protected:
friend class ASTContext; // ASTContext creates these.

TypedefType(TypeClass tc, const TypedefNameDecl *D, QualType can)
    : Type(tc, can, can->isDependentType(),
           can->isInstantiationDependentType(),
           can->isVariablyModifiedType(),
           /*ContainsUnexpandedParameterPack=*/false),
      Decl(const_cast<TypedefNameDecl*>(D)) {
  assert(!isa<TypedefType>(can) && "Invalid canonical type")((!isa<TypedefType>(can) && "Invalid canonical type"
) ? static_cast<void> (0) : __assert_fail ("!isa<TypedefType>(can) && \"Invalid canonical type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4278, __PRETTY_FUNCTION__));
}

4281public:
TypedefNameDecl *getDecl() const { return Decl; }

bool isSugared() const { return true; }
QualType desugar() const;

static bool classof(const Type *T) { return T->getTypeClass() == Typedef; }
4288};

4290/// Sugar type that represents a type that was qualified by a qualifier written
4291/// as a macro invocation.
4292class MacroQualifiedType : public Type {
friend class ASTContext; // ASTContext creates these.

QualType UnderlyingTy;
const IdentifierInfo *MacroII;

MacroQualifiedType(QualType UnderlyingTy, QualType CanonTy,
                   const IdentifierInfo *MacroII)
    : Type(MacroQualified, CanonTy, UnderlyingTy->isDependentType(),
           UnderlyingTy->isInstantiationDependentType(),
           UnderlyingTy->isVariablyModifiedType(),
           UnderlyingTy->containsUnexpandedParameterPack()),
      UnderlyingTy(UnderlyingTy), MacroII(MacroII) {
  assert(isa<AttributedType>(UnderlyingTy) &&((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types."
) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4306, __PRETTY_FUNCTION__))
         "Expected a macro qualified type to only wrap attributed types.")((isa<AttributedType>(UnderlyingTy) && "Expected a macro qualified type to only wrap attributed types."
) ? static_cast<void> (0) : __assert_fail ("isa<AttributedType>(UnderlyingTy) && \"Expected a macro qualified type to only wrap attributed types.\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4306, __PRETTY_FUNCTION__));
}

4309public:
const IdentifierInfo *getMacroIdentifier() const { return MacroII; }
QualType getUnderlyingType() const { return UnderlyingTy; }

/// Return this attributed type's modified type with no qualifiers attached to
/// it.
QualType getModifiedType() const;

bool isSugared() const { return true; }
QualType desugar() const;

static bool classof(const Type *T) {
  return T->getTypeClass() == MacroQualified;
}
4323};

4325/// Represents a `typeof` (or __typeof__) expression (a GCC extension).
4326class TypeOfExprType : public Type {
Expr *TOExpr;

4329protected:
friend class ASTContext; // ASTContext creates these.

TypeOfExprType(Expr *E, QualType can = QualType());

4334public:
Expr *getUnderlyingExpr() const { return TOExpr; }

/// Remove a single level of sugar.
QualType desugar() const;

/// Returns whether this type directly provides sugar.
bool isSugared() const;

static bool classof(const Type *T) { return T->getTypeClass() == TypeOfExpr; }
4344};

4346/// Internal representation of canonical, dependent
4347/// `typeof(expr)` types.
4348///
4349/// This class is used internally by the ASTContext to manage
4350/// canonical, dependent types, only. Clients will only see instances
4351/// of this class via TypeOfExprType nodes.
4352class DependentTypeOfExprType
: public TypeOfExprType, public llvm::FoldingSetNode {
const ASTContext &Context;

4356public:
DependentTypeOfExprType(const ASTContext &Context, Expr *E)
    : TypeOfExprType(E), Context(Context) {}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, Context, getUnderlyingExpr());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
                    Expr *E);
4366};

4368/// Represents `typeof(type)`, a GCC extension.
4369class TypeOfType : public Type {
friend class ASTContext; // ASTContext creates these.

QualType TOType;

TypeOfType(QualType T, QualType can)
    : Type(TypeOf, can, T->isDependentType(),
           T->isInstantiationDependentType(),
           T->isVariablyModifiedType(),
           T->containsUnexpandedParameterPack()),
      TOType(T) {
  assert(!isa<TypedefType>(can) && "Invalid canonical type")((!isa<TypedefType>(can) && "Invalid canonical type"
) ? static_cast<void> (0) : __assert_fail ("!isa<TypedefType>(can) && \"Invalid canonical type\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4380, __PRETTY_FUNCTION__));
}

4383public:
QualType getUnderlyingType() const { return TOType; }

/// Remove a single level of sugar.
QualType desugar() const { return getUnderlyingType(); }

/// Returns whether this type directly provides sugar.
bool isSugared() const { return true; }

static bool classof(const Type *T) { return T->getTypeClass() == TypeOf; }
4393};

4395/// Represents the type `decltype(expr)` (C++11).
4396class DecltypeType : public Type {
Expr *E;
QualType UnderlyingType;

4400protected:
friend class ASTContext; // ASTContext creates these.

DecltypeType(Expr *E, QualType underlyingType, QualType can = QualType());

4405public:
Expr *getUnderlyingExpr() const { return E; }
QualType getUnderlyingType() const { return UnderlyingType; }

/// Remove a single level of sugar.
QualType desugar() const;

/// Returns whether this type directly provides sugar.
bool isSugared() const;

static bool classof(const Type *T) { return T->getTypeClass() == Decltype; }
4416};

4418/// Internal representation of canonical, dependent
4419/// decltype(expr) types.
4420///
4421/// This class is used internally by the ASTContext to manage
4422/// canonical, dependent types, only. Clients will only see instances
4423/// of this class via DecltypeType nodes.
4424class DependentDecltypeType : public DecltypeType, public llvm::FoldingSetNode {
const ASTContext &Context;

4427public:
DependentDecltypeType(const ASTContext &Context, Expr *E);

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, Context, getUnderlyingExpr());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
                    Expr *E);
4436};

4438/// A unary type transform, which is a type constructed from another.
4439class UnaryTransformType : public Type {
4440public:
enum UTTKind {
  EnumUnderlyingType
};

4445private:
/// The untransformed type.
QualType BaseType;

/// The transformed type if not dependent, otherwise the same as BaseType.
QualType UnderlyingType;

UTTKind UKind;

4454protected:
friend class ASTContext;

UnaryTransformType(QualType BaseTy, QualType UnderlyingTy, UTTKind UKind,
                   QualType CanonicalTy);

4460public:
bool isSugared() const { return !isDependentType(); }
QualType desugar() const { return UnderlyingType; }

QualType getUnderlyingType() const { return UnderlyingType; }
QualType getBaseType() const { return BaseType; }

UTTKind getUTTKind() const { return UKind; }

static bool classof(const Type *T) {
  return T->getTypeClass() == UnaryTransform;
}
4472};

4474/// Internal representation of canonical, dependent
4475/// __underlying_type(type) types.
4476///
4477/// This class is used internally by the ASTContext to manage
4478/// canonical, dependent types, only. Clients will only see instances
4479/// of this class via UnaryTransformType nodes.
4480class DependentUnaryTransformType : public UnaryTransformType,
                                  public llvm::FoldingSetNode {
4482public:
DependentUnaryTransformType(const ASTContext &C, QualType BaseType,
                            UTTKind UKind);

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getBaseType(), getUTTKind());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType BaseType,
                    UTTKind UKind) {
  ID.AddPointer(BaseType.getAsOpaquePtr());
  ID.AddInteger((unsigned)UKind);
}
4495};

4497class TagType : public Type {
friend class ASTReader;
template <class T> friend class serialization::AbstractTypeReader;

/// Stores the TagDecl associated with this type. The decl may point to any
/// TagDecl that declares the entity.
TagDecl *decl;

4505protected:
TagType(TypeClass TC, const TagDecl *D, QualType can);

4508public:
TagDecl *getDecl() const;

/// Determines whether this type is in the process of being defined.
bool isBeingDefined() const;

static bool classof(const Type *T) {
  return T->getTypeClass() == Enum || T->getTypeClass() == Record;
}
4517};

4519/// A helper class that allows the use of isa/cast/dyncast
4520/// to detect TagType objects of structs/unions/classes.
4521class RecordType : public TagType {
4522protected:
friend class ASTContext; // ASTContext creates these.

explicit RecordType(const RecordDecl *D)
    : TagType(Record, reinterpret_cast<const TagDecl*>(D), QualType()) {}
explicit RecordType(TypeClass TC, RecordDecl *D)
    : TagType(TC, reinterpret_cast<const TagDecl*>(D), QualType()) {}

4530public:
RecordDecl *getDecl() const {
  return reinterpret_cast<RecordDecl*>(TagType::getDecl());
}

/// Recursively check all fields in the record for const-ness. If any field
/// is declared const, return true. Otherwise, return false.
bool hasConstFields() const;

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) { return T->getTypeClass() == Record; }
4543};

4545/// A helper class that allows the use of isa/cast/dyncast
4546/// to detect TagType objects of enums.
4547class EnumType : public TagType {
friend class ASTContext; // ASTContext creates these.

explicit EnumType(const EnumDecl *D)
    : TagType(Enum, reinterpret_cast<const TagDecl*>(D), QualType()) {}

4553public:
EnumDecl *getDecl() const {
  return reinterpret_cast<EnumDecl*>(TagType::getDecl());
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) { return T->getTypeClass() == Enum; }
4562};

4564/// An attributed type is a type to which a type attribute has been applied.
4565///
4566/// The "modified type" is the fully-sugared type to which the attributed
4567/// type was applied; generally it is not canonically equivalent to the
4568/// attributed type. The "equivalent type" is the minimally-desugared type
4569/// which the type is canonically equivalent to.
4570///
4571/// For example, in the following attributed type:
4572///     int32_t __attribute__((vector_size(16)))
4573///   - the modified type is the TypedefType for int32_t
4574///   - the equivalent type is VectorType(16, int32_t)
4575///   - the canonical type is VectorType(16, int)
4576class AttributedType : public Type, public llvm::FoldingSetNode {
4577public:
using Kind = attr::Kind;

4580private:
friend class ASTContext; // ASTContext creates these

QualType ModifiedType;
QualType EquivalentType;

AttributedType(QualType canon, attr::Kind attrKind, QualType modified,
               QualType equivalent)
    : Type(Attributed, canon, equivalent->isDependentType(),
           equivalent->isInstantiationDependentType(),
           equivalent->isVariablyModifiedType(),
           equivalent->containsUnexpandedParameterPack()),
      ModifiedType(modified), EquivalentType(equivalent) {
  AttributedTypeBits.AttrKind = attrKind;
}

4596public:
Kind getAttrKind() const {
  return static_cast<Kind>(AttributedTypeBits.AttrKind);
}

QualType getModifiedType() const { return ModifiedType; }
QualType getEquivalentType() const { return EquivalentType; }

bool isSugared() const { return true; }
QualType desugar() const { return getEquivalentType(); }

/// Does this attribute behave like a type qualifier?
///
/// A type qualifier adjusts a type to provide specialized rules for
/// a specific object, like the standard const and volatile qualifiers.
/// This includes attributes controlling things like nullability,
/// address spaces, and ARC ownership.  The value of the object is still
/// largely described by the modified type.
///
/// In contrast, many type attributes "rewrite" their modified type to
/// produce a fundamentally different type, not necessarily related in any
/// formalizable way to the original type.  For example, calling convention
/// and vector attributes are not simple type qualifiers.
///
/// Type qualifiers are often, but not always, reflected in the canonical
/// type.
bool isQualifier() const;

bool isMSTypeSpec() const;

bool isCallingConv() const;

llvm::Optional<NullabilityKind> getImmediateNullability() const;

/// Retrieve the attribute kind corresponding to the given
/// nullability kind.
static Kind getNullabilityAttrKind(NullabilityKind kind) {
  switch (kind) {
  case NullabilityKind::NonNull:
    return attr::TypeNonNull;

  case NullabilityKind::Nullable:
    return attr::TypeNullable;

  case NullabilityKind::Unspecified:
    return attr::TypeNullUnspecified;
  }
  llvm_unreachable("Unknown nullability kind.")::llvm::llvm_unreachable_internal("Unknown nullability kind."
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 4643);
}

/// Strip off the top-level nullability annotation on the given
/// type, if it's there.
///
/// \param T The type to strip. If the type is exactly an
/// AttributedType specifying nullability (without looking through
/// type sugar), the nullability is returned and this type changed
/// to the underlying modified type.
///
/// \returns the top-level nullability, if present.
static Optional<NullabilityKind> stripOuterNullability(QualType &T);

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getAttrKind(), ModifiedType, EquivalentType);
}

static void Profile(llvm::FoldingSetNodeID &ID, Kind attrKind,
                    QualType modified, QualType equivalent) {
  ID.AddInteger(attrKind);
  ID.AddPointer(modified.getAsOpaquePtr());
  ID.AddPointer(equivalent.getAsOpaquePtr());
}

static bool classof(const Type *T) {
  return T->getTypeClass() == Attributed;
}
4671};

4673class TemplateTypeParmType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these

// Helper data collector for canonical types.
struct CanonicalTTPTInfo {
  unsigned Depth : 15;
  unsigned ParameterPack : 1;
  unsigned Index : 16;
};

union {
  // Info for the canonical type.
  CanonicalTTPTInfo CanTTPTInfo;

  // Info for the non-canonical type.
  TemplateTypeParmDecl *TTPDecl;
};

/// Build a non-canonical type.
TemplateTypeParmType(TemplateTypeParmDecl *TTPDecl, QualType Canon)
    : Type(TemplateTypeParm, Canon, /*Dependent=*/true,
           /*InstantiationDependent=*/true,
           /*VariablyModified=*/false,
           Canon->containsUnexpandedParameterPack()),
      TTPDecl(TTPDecl) {}

/// Build the canonical type.
TemplateTypeParmType(unsigned D, unsigned I, bool PP)
    : Type(TemplateTypeParm, QualType(this, 0),
           /*Dependent=*/true,
           /*InstantiationDependent=*/true,
           /*VariablyModified=*/false, PP) {
  CanTTPTInfo.Depth = D;
  CanTTPTInfo.Index = I;
  CanTTPTInfo.ParameterPack = PP;
}

const CanonicalTTPTInfo& getCanTTPTInfo() const {
  QualType Can = getCanonicalTypeInternal();
  return Can->castAs<TemplateTypeParmType>()->CanTTPTInfo;
}

4715public:
unsigned getDepth() const { return getCanTTPTInfo().Depth; }
unsigned getIndex() const { return getCanTTPTInfo().Index; }
bool isParameterPack() const { return getCanTTPTInfo().ParameterPack; }

TemplateTypeParmDecl *getDecl() const {
  return isCanonicalUnqualified() ? nullptr : TTPDecl;
}

IdentifierInfo *getIdentifier() const;

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getDepth(), getIndex(), isParameterPack(), getDecl());
}

static void Profile(llvm::FoldingSetNodeID &ID, unsigned Depth,
                    unsigned Index, bool ParameterPack,
                    TemplateTypeParmDecl *TTPDecl) {
  ID.AddInteger(Depth);
  ID.AddInteger(Index);
  ID.AddBoolean(ParameterPack);
  ID.AddPointer(TTPDecl);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == TemplateTypeParm;
}
4745};

4747/// Represents the result of substituting a type for a template
4748/// type parameter.
4749///
4750/// Within an instantiated template, all template type parameters have
4751/// been replaced with these.  They are used solely to record that a
4752/// type was originally written as a template type parameter;
4753/// therefore they are never canonical.
4754class SubstTemplateTypeParmType : public Type, public llvm::FoldingSetNode {
friend class ASTContext;

// The original type parameter.
const TemplateTypeParmType *Replaced;

SubstTemplateTypeParmType(const TemplateTypeParmType *Param, QualType Canon)
    : Type(SubstTemplateTypeParm, Canon, Canon->isDependentType(),
           Canon->isInstantiationDependentType(),
           Canon->isVariablyModifiedType(),
           Canon->containsUnexpandedParameterPack()),
      Replaced(Param) {}

4767public:
/// Gets the template parameter that was substituted for.
const TemplateTypeParmType *getReplacedParameter() const {
  return Replaced;
}

/// Gets the type that was substituted for the template
/// parameter.
QualType getReplacementType() const {
  return getCanonicalTypeInternal();
}

bool isSugared() const { return true; }
QualType desugar() const { return getReplacementType(); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getReplacedParameter(), getReplacementType());
}

static void Profile(llvm::FoldingSetNodeID &ID,
                    const TemplateTypeParmType *Replaced,
                    QualType Replacement) {
  ID.AddPointer(Replaced);
  ID.AddPointer(Replacement.getAsOpaquePtr());
}

static bool classof(const Type *T) {
  return T->getTypeClass() == SubstTemplateTypeParm;
}
4796};

4798/// Represents the result of substituting a set of types for a template
4799/// type parameter pack.
4800///
4801/// When a pack expansion in the source code contains multiple parameter packs
4802/// and those parameter packs correspond to different levels of template
4803/// parameter lists, this type node is used to represent a template type
4804/// parameter pack from an outer level, which has already had its argument pack
4805/// substituted but that still lives within a pack expansion that itself
4806/// could not be instantiated. When actually performing a substitution into
4807/// that pack expansion (e.g., when all template parameters have corresponding
4808/// arguments), this type will be replaced with the \c SubstTemplateTypeParmType
4809/// at the current pack substitution index.
4810class SubstTemplateTypeParmPackType : public Type, public llvm::FoldingSetNode {
friend class ASTContext;

/// The original type parameter.
const TemplateTypeParmType *Replaced;

/// A pointer to the set of template arguments that this
/// parameter pack is instantiated with.
const TemplateArgument *Arguments;

SubstTemplateTypeParmPackType(const TemplateTypeParmType *Param,
                              QualType Canon,
                              const TemplateArgument &ArgPack);

4824public:
IdentifierInfo *getIdentifier() const { return Replaced->getIdentifier(); }

/// Gets the template parameter that was substituted for.
const TemplateTypeParmType *getReplacedParameter() const {
  return Replaced;
}

unsigned getNumArgs() const {
  return SubstTemplateTypeParmPackTypeBits.NumArgs;
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

TemplateArgument getArgumentPack() const;

void Profile(llvm::FoldingSetNodeID &ID);
static void Profile(llvm::FoldingSetNodeID &ID,
                    const TemplateTypeParmType *Replaced,
                    const TemplateArgument &ArgPack);

static bool classof(const Type *T) {
  return T->getTypeClass() == SubstTemplateTypeParmPack;
}
4849};

4851/// Common base class for placeholders for types that get replaced by
4852/// placeholder type deduction: C++11 auto, C++14 decltype(auto), C++17 deduced
4853/// class template types, and constrained type names.
4854///
4855/// These types are usually a placeholder for a deduced type. However, before
4856/// the initializer is attached, or (usually) if the initializer is
4857/// type-dependent, there is no deduced type and the type is canonical. In
4858/// the latter case, it is also a dependent type.
4859class DeducedType : public Type {
4860protected:
DeducedType(TypeClass TC, QualType DeducedAsType, bool IsDependent,
            bool IsInstantiationDependent, bool ContainsParameterPack)
    : Type(TC,
           // FIXME: Retain the sugared deduced type?
           DeducedAsType.isNull() ? QualType(this, 0)
                                  : DeducedAsType.getCanonicalType(),
           IsDependent, IsInstantiationDependent,
           /*VariablyModified=*/false, ContainsParameterPack) {
  if (!DeducedAsType.isNull()) {
    if (DeducedAsType->isDependentType())
      setDependent();
    if (DeducedAsType->isInstantiationDependentType())
      setInstantiationDependent();
    if (DeducedAsType->containsUnexpandedParameterPack())
      setContainsUnexpandedParameterPack();
  }
}

4879public:
bool isSugared() const { return !isCanonicalUnqualified(); }
QualType desugar() const { return getCanonicalTypeInternal(); }

/// Get the type deduced for this placeholder type, or null if it's
/// either not been deduced or was deduced to a dependent type.
QualType getDeducedType() const {
  return !isCanonicalUnqualified() ? getCanonicalTypeInternal() : QualType();
}
bool isDeduced() const {
  return !isCanonicalUnqualified() || isDependentType();
}

static bool classof(const Type *T) {
  return T->getTypeClass() == Auto ||
         T->getTypeClass() == DeducedTemplateSpecialization;
}
4896};

4898/// Represents a C++11 auto or C++14 decltype(auto) type, possibly constrained
4899/// by a type-constraint.
4900class alignas(8) AutoType : public DeducedType, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these

ConceptDecl *TypeConstraintConcept;

AutoType(QualType DeducedAsType, AutoTypeKeyword Keyword,
         bool IsDeducedAsDependent, bool IsDeducedAsPack, ConceptDecl *CD,
         ArrayRef<TemplateArgument> TypeConstraintArgs);

const TemplateArgument *getArgBuffer() const {
  return reinterpret_cast<const TemplateArgument*>(this+1);
}

TemplateArgument *getArgBuffer() {
  return reinterpret_cast<TemplateArgument*>(this+1);
}

4917public:
/// Retrieve the template arguments.
const TemplateArgument *getArgs() const {
  return getArgBuffer();
}

/// Retrieve the number of template arguments.
unsigned getNumArgs() const {
  return AutoTypeBits.NumArgs;
}

const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h

ArrayRef<TemplateArgument> getTypeConstraintArguments() const {
  return {getArgs(), getNumArgs()};
}

ConceptDecl *getTypeConstraintConcept() const {
  return TypeConstraintConcept;
}

bool isConstrained() const {
  return TypeConstraintConcept != nullptr;
}

bool isDecltypeAuto() const {
  return getKeyword() == AutoTypeKeyword::DecltypeAuto;
}

AutoTypeKeyword getKeyword() const {
  return (AutoTypeKeyword)AutoTypeBits.Keyword;
}

void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) {
  Profile(ID, Context, getDeducedType(), getKeyword(), isDependentType(),
          getTypeConstraintConcept(), getTypeConstraintArguments());
}

static void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
                    QualType Deduced, AutoTypeKeyword Keyword,
                    bool IsDependent, ConceptDecl *CD,
                    ArrayRef<TemplateArgument> Arguments);

static bool classof(const Type *T) {
  return T->getTypeClass() == Auto;
}
4963};

4965/// Represents a C++17 deduced template specialization type.
4966class DeducedTemplateSpecializationType : public DeducedType,
                                        public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these

/// The name of the template whose arguments will be deduced.
TemplateName Template;

DeducedTemplateSpecializationType(TemplateName Template,
                                  QualType DeducedAsType,
                                  bool IsDeducedAsDependent)
    : DeducedType(DeducedTemplateSpecialization, DeducedAsType,
                  IsDeducedAsDependent || Template.isDependent(),
                  IsDeducedAsDependent || Template.isInstantiationDependent(),
                  Template.containsUnexpandedParameterPack()),
      Template(Template) {}

4982public:
/// Retrieve the name of the template that we are deducing.
TemplateName getTemplateName() const { return Template;}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getTemplateName(), getDeducedType(), isDependentType());
}

static void Profile(llvm::FoldingSetNodeID &ID, TemplateName Template,
                    QualType Deduced, bool IsDependent) {
  Template.Profile(ID);
  ID.AddPointer(Deduced.getAsOpaquePtr());
  ID.AddBoolean(IsDependent);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == DeducedTemplateSpecialization;
}
5000};

5002/// Represents a type template specialization; the template
5003/// must be a class template, a type alias template, or a template
5004/// template parameter.  A template which cannot be resolved to one of
5005/// these, e.g. because it is written with a dependent scope
5006/// specifier, is instead represented as a
5007/// @c DependentTemplateSpecializationType.
5008///
5009/// A non-dependent template specialization type is always "sugar",
5010/// typically for a \c RecordType.  For example, a class template
5011/// specialization type of \c vector<int> will refer to a tag type for
5012/// the instantiation \c std::vector<int, std::allocator<int>>
5013///
5014/// Template specializations are dependent if either the template or
5015/// any of the template arguments are dependent, in which case the
5016/// type may also be canonical.
5017///
5018/// Instances of this type are allocated with a trailing array of
5019/// TemplateArguments, followed by a QualType representing the
5020/// non-canonical aliased type when the template is a type alias
5021/// template.
5022class alignas(8) TemplateSpecializationType
  : public Type,
    public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these

/// The name of the template being specialized.  This is
/// either a TemplateName::Template (in which case it is a
/// ClassTemplateDecl*, a TemplateTemplateParmDecl*, or a
/// TypeAliasTemplateDecl*), a
/// TemplateName::SubstTemplateTemplateParmPack, or a
/// TemplateName::SubstTemplateTemplateParm (in which case the
/// replacement must, recursively, be one of these).
TemplateName Template;

TemplateSpecializationType(TemplateName T,
                           ArrayRef<TemplateArgument> Args,
                           QualType Canon,
                           QualType Aliased);

5041public:
/// Determine whether any of the given template arguments are dependent.
static bool anyDependentTemplateArguments(ArrayRef<TemplateArgumentLoc> Args,
                                          bool &InstantiationDependent);

static bool anyDependentTemplateArguments(const TemplateArgumentListInfo &,
                                          bool &InstantiationDependent);

/// True if this template specialization type matches a current
/// instantiation in the context in which it is found.
bool isCurrentInstantiation() const {
  return isa<InjectedClassNameType>(getCanonicalTypeInternal());
}

/// Determine if this template specialization type is for a type alias
/// template that has been substituted.
///
/// Nearly every template specialization type whose template is an alias
/// template will be substituted. However, this is not the case when
/// the specialization contains a pack expansion but the template alias
/// does not have a corresponding parameter pack, e.g.,
///
/// \code
/// template<typename T, typename U, typename V> struct S;
/// template<typename T, typename U> using A = S<T, int, U>;
/// template<typename... Ts> struct X {
///   typedef A<Ts...> type; // not a type alias
/// };
/// \endcode
bool isTypeAlias() const { return TemplateSpecializationTypeBits.TypeAlias; }

/// Get the aliased type, if this is a specialization of a type alias
/// template.
QualType getAliasedType() const {
  assert(isTypeAlias() && "not a type alias template specialization")((isTypeAlias() && "not a type alias template specialization"
) ? static_cast<void> (0) : __assert_fail ("isTypeAlias() && \"not a type alias template specialization\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5075, __PRETTY_FUNCTION__));
  return *reinterpret_cast<const QualType*>(end());
}

using iterator = const TemplateArgument *;

iterator begin() const { return getArgs(); }
iterator end() const; // defined inline in TemplateBase.h

/// Retrieve the name of the template that we are specializing.
TemplateName getTemplateName() const { return Template; }

/// Retrieve the template arguments.
const TemplateArgument *getArgs() const {
  return reinterpret_cast<const TemplateArgument *>(this + 1);
}

/// Retrieve the number of template arguments.
unsigned getNumArgs() const {
  return TemplateSpecializationTypeBits.NumArgs;
}

/// Retrieve a specific template argument as a type.
/// \pre \c isArgType(Arg)
const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h

ArrayRef<TemplateArgument> template_arguments() const {
  return {getArgs(), getNumArgs()};
}

bool isSugared() const {
  return !isDependentType() || isCurrentInstantiation() || isTypeAlias();
}

QualType desugar() const {
  return isTypeAlias() ? getAliasedType() : getCanonicalTypeInternal();
}

void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Ctx) {
  Profile(ID, Template, template_arguments(), Ctx);
  if (isTypeAlias())
    getAliasedType().Profile(ID);
}

static void Profile(llvm::FoldingSetNodeID &ID, TemplateName T,
                    ArrayRef<TemplateArgument> Args,
                    const ASTContext &Context);

static bool classof(const Type *T) {
  return T->getTypeClass() == TemplateSpecialization;
}
5126};

5128/// Print a template argument list, including the '<' and '>'
5129/// enclosing the template arguments.
5130void printTemplateArgumentList(raw_ostream &OS,
                             ArrayRef<TemplateArgument> Args,
                             const PrintingPolicy &Policy);

5134void printTemplateArgumentList(raw_ostream &OS,
                             ArrayRef<TemplateArgumentLoc> Args,
                             const PrintingPolicy &Policy);

5138void printTemplateArgumentList(raw_ostream &OS,
                             const TemplateArgumentListInfo &Args,
                             const PrintingPolicy &Policy);

5142/// The injected class name of a C++ class template or class
5143/// template partial specialization.  Used to record that a type was
5144/// spelled with a bare identifier rather than as a template-id; the
5145/// equivalent for non-templated classes is just RecordType.
5146///
5147/// Injected class name types are always dependent.  Template
5148/// instantiation turns these into RecordTypes.
5149///
5150/// Injected class name types are always canonical.  This works
5151/// because it is impossible to compare an injected class name type
5152/// with the corresponding non-injected template type, for the same
5153/// reason that it is impossible to directly compare template
5154/// parameters from different dependent contexts: injected class name
5155/// types can only occur within the scope of a particular templated
5156/// declaration, and within that scope every template specialization
5157/// will canonicalize to the injected class name (when appropriate
5158/// according to the rules of the language).
5159class InjectedClassNameType : public Type {
friend class ASTContext; // ASTContext creates these.
friend class ASTNodeImporter;
friend class ASTReader; // FIXME: ASTContext::getInjectedClassNameType is not
                        // currently suitable for AST reading, too much
                        // interdependencies.
template <class T> friend class serialization::AbstractTypeReader;

CXXRecordDecl *Decl;

/// The template specialization which this type represents.
/// For example, in
///   template <class T> class A { ... };
/// this is A<T>, whereas in
///   template <class X, class Y> class A<B<X,Y> > { ... };
/// this is A<B<X,Y> >.
///
/// It is always unqualified, always a template specialization type,
/// and always dependent.
QualType InjectedType;

InjectedClassNameType(CXXRecordDecl *D, QualType TST)
    : Type(InjectedClassName, QualType(), /*Dependent=*/true,
           /*InstantiationDependent=*/true,
           /*VariablyModified=*/false,
           /*ContainsUnexpandedParameterPack=*/false),
      Decl(D), InjectedType(TST) {
  assert(isa<TemplateSpecializationType>(TST))((isa<TemplateSpecializationType>(TST)) ? static_cast<
void> (0) : __assert_fail ("isa<TemplateSpecializationType>(TST)"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5186, __PRETTY_FUNCTION__));
  assert(!TST.hasQualifiers())((!TST.hasQualifiers()) ? static_cast<void> (0) : __assert_fail
 ("!TST.hasQualifiers()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5187, __PRETTY_FUNCTION__));
  assert(TST->isDependentType())((TST->isDependentType()) ? static_cast<void> (0) : __assert_fail
 ("TST->isDependentType()", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5188, __PRETTY_FUNCTION__));
}

5191public:
QualType getInjectedSpecializationType() const { return InjectedType; }

const TemplateSpecializationType *getInjectedTST() const {
  return cast<TemplateSpecializationType>(InjectedType.getTypePtr());
}

TemplateName getTemplateName() const {
  return getInjectedTST()->getTemplateName();
}

CXXRecordDecl *getDecl() const;

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == InjectedClassName;
}
5210};

5212/// The kind of a tag type.
5213enum TagTypeKind {
/// The "struct" keyword.
TTK_Struct,

/// The "__interface" keyword.
TTK_Interface,

/// The "union" keyword.
TTK_Union,

/// The "class" keyword.
TTK_Class,

/// The "enum" keyword.
TTK_Enum
5228};

5230/// The elaboration keyword that precedes a qualified type name or
5231/// introduces an elaborated-type-specifier.
5232enum ElaboratedTypeKeyword {
/// The "struct" keyword introduces the elaborated-type-specifier.
ETK_Struct,

/// The "__interface" keyword introduces the elaborated-type-specifier.
ETK_Interface,

/// The "union" keyword introduces the elaborated-type-specifier.
ETK_Union,

/// The "class" keyword introduces the elaborated-type-specifier.
ETK_Class,

/// The "enum" keyword introduces the elaborated-type-specifier.
ETK_Enum,

/// The "typename" keyword precedes the qualified type name, e.g.,
/// \c typename T::type.
ETK_Typename,

/// No keyword precedes the qualified type name.
ETK_None
5254};

5256/// A helper class for Type nodes having an ElaboratedTypeKeyword.
5257/// The keyword in stored in the free bits of the base class.
5258/// Also provides a few static helpers for converting and printing
5259/// elaborated type keyword and tag type kind enumerations.
5260class TypeWithKeyword : public Type {
5261protected:
TypeWithKeyword(ElaboratedTypeKeyword Keyword, TypeClass tc,
                QualType Canonical, bool Dependent,
                bool InstantiationDependent, bool VariablyModified,
                bool ContainsUnexpandedParameterPack)
    : Type(tc, Canonical, Dependent, InstantiationDependent, VariablyModified,
           ContainsUnexpandedParameterPack) {
  TypeWithKeywordBits.Keyword = Keyword;
}

5271public:
ElaboratedTypeKeyword getKeyword() const {
  return static_cast<ElaboratedTypeKeyword>(TypeWithKeywordBits.Keyword);
}

/// Converts a type specifier (DeclSpec::TST) into an elaborated type keyword.
static ElaboratedTypeKeyword getKeywordForTypeSpec(unsigned TypeSpec);

/// Converts a type specifier (DeclSpec::TST) into a tag type kind.
/// It is an error to provide a type specifier which *isn't* a tag kind here.
static TagTypeKind getTagTypeKindForTypeSpec(unsigned TypeSpec);

/// Converts a TagTypeKind into an elaborated type keyword.
static ElaboratedTypeKeyword getKeywordForTagTypeKind(TagTypeKind Tag);

/// Converts an elaborated type keyword into a TagTypeKind.
/// It is an error to provide an elaborated type keyword
/// which *isn't* a tag kind here.
static TagTypeKind getTagTypeKindForKeyword(ElaboratedTypeKeyword Keyword);

static bool KeywordIsTagTypeKind(ElaboratedTypeKeyword Keyword);

static StringRef getKeywordName(ElaboratedTypeKeyword Keyword);

static StringRef getTagTypeKindName(TagTypeKind Kind) {
  return getKeywordName(getKeywordForTagTypeKind(Kind));
}

class CannotCastToThisType {};
static CannotCastToThisType classof(const Type *);
5301};

5303/// Represents a type that was referred to using an elaborated type
5304/// keyword, e.g., struct S, or via a qualified name, e.g., N::M::type,
5305/// or both.
5306///
5307/// This type is used to keep track of a type name as written in the
5308/// source code, including tag keywords and any nested-name-specifiers.
5309/// The type itself is always "sugar", used to express what was written
5310/// in the source code but containing no additional semantic information.
5311class ElaboratedType final
  : public TypeWithKeyword,
    public llvm::FoldingSetNode,
    private llvm::TrailingObjects<ElaboratedType, TagDecl *> {
friend class ASTContext; // ASTContext creates these
friend TrailingObjects;

/// The nested name specifier containing the qualifier.
NestedNameSpecifier *NNS;

/// The type that this qualified name refers to.
QualType NamedType;

/// The (re)declaration of this tag type owned by this occurrence is stored
/// as a trailing object if there is one. Use getOwnedTagDecl to obtain
/// it, or obtain a null pointer if there is none.

ElaboratedType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS,
               QualType NamedType, QualType CanonType, TagDecl *OwnedTagDecl)
    : TypeWithKeyword(Keyword, Elaborated, CanonType,
                      NamedType->isDependentType(),
                      NamedType->isInstantiationDependentType(),
                      NamedType->isVariablyModifiedType(),
                      NamedType->containsUnexpandedParameterPack()),
      NNS(NNS), NamedType(NamedType) {
  ElaboratedTypeBits.HasOwnedTagDecl = false;
  if (OwnedTagDecl) {
    ElaboratedTypeBits.HasOwnedTagDecl = true;
    *getTrailingObjects<TagDecl *>() = OwnedTagDecl;
  }
  assert(!(Keyword == ETK_None && NNS == nullptr) &&((!(Keyword == ETK_None && NNS == nullptr) &&
 "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null."
) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5343, __PRETTY_FUNCTION__))
         "ElaboratedType cannot have elaborated type keyword "((!(Keyword == ETK_None && NNS == nullptr) &&
 "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null."
) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5343, __PRETTY_FUNCTION__))
         "and name qualifier both null.")((!(Keyword == ETK_None && NNS == nullptr) &&
 "ElaboratedType cannot have elaborated type keyword " "and name qualifier both null."
) ? static_cast<void> (0) : __assert_fail ("!(Keyword == ETK_None && NNS == nullptr) && \"ElaboratedType cannot have elaborated type keyword \" \"and name qualifier both null.\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5343, __PRETTY_FUNCTION__));
}

5346public:
/// Retrieve the qualification on this type.
NestedNameSpecifier *getQualifier() const { return NNS; }

/// Retrieve the type named by the qualified-id.
QualType getNamedType() const { return NamedType; }

/// Remove a single level of sugar.
QualType desugar() const { return getNamedType(); }

/// Returns whether this type directly provides sugar.
bool isSugared() const { return true; }

/// Return the (re)declaration of this type owned by this occurrence of this
/// type, or nullptr if there is none.
TagDecl *getOwnedTagDecl() const {
  return ElaboratedTypeBits.HasOwnedTagDecl ? *getTrailingObjects<TagDecl *>()
                                            : nullptr;
}

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getKeyword(), NNS, NamedType, getOwnedTagDecl());
}

static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword,
                    NestedNameSpecifier *NNS, QualType NamedType,
                    TagDecl *OwnedTagDecl) {
  ID.AddInteger(Keyword);
  ID.AddPointer(NNS);
  NamedType.Profile(ID);
  ID.AddPointer(OwnedTagDecl);
}

static bool classof(const Type *T) { return T->getTypeClass() == Elaborated; }
5380};

5382/// Represents a qualified type name for which the type name is
5383/// dependent.
5384///
5385/// DependentNameType represents a class of dependent types that involve a
5386/// possibly dependent nested-name-specifier (e.g., "T::") followed by a
5387/// name of a type. The DependentNameType may start with a "typename" (for a
5388/// typename-specifier), "class", "struct", "union", or "enum" (for a
5389/// dependent elaborated-type-specifier), or nothing (in contexts where we
5390/// know that we must be referring to a type, e.g., in a base class specifier).
5391/// Typically the nested-name-specifier is dependent, but in MSVC compatibility
5392/// mode, this type is used with non-dependent names to delay name lookup until
5393/// instantiation.
5394class DependentNameType : public TypeWithKeyword, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these

/// The nested name specifier containing the qualifier.
NestedNameSpecifier *NNS;

/// The type that this typename specifier refers to.
const IdentifierInfo *Name;

DependentNameType(ElaboratedTypeKeyword Keyword, NestedNameSpecifier *NNS,
                  const IdentifierInfo *Name, QualType CanonType)
    : TypeWithKeyword(Keyword, DependentName, CanonType, /*Dependent=*/true,
                      /*InstantiationDependent=*/true,
                      /*VariablyModified=*/false,
                      NNS->containsUnexpandedParameterPack()),
      NNS(NNS), Name(Name) {}

5411public:
/// Retrieve the qualification on this type.
NestedNameSpecifier *getQualifier() const { return NNS; }

/// Retrieve the type named by the typename specifier as an identifier.
///
/// This routine will return a non-NULL identifier pointer when the
/// form of the original typename was terminated by an identifier,
/// e.g., "typename T::type".
const IdentifierInfo *getIdentifier() const {
  return Name;
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getKeyword(), NNS, Name);
}

static void Profile(llvm::FoldingSetNodeID &ID, ElaboratedTypeKeyword Keyword,
                    NestedNameSpecifier *NNS, const IdentifierInfo *Name) {
  ID.AddInteger(Keyword);
  ID.AddPointer(NNS);
  ID.AddPointer(Name);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == DependentName;
}
5441};

5443/// Represents a template specialization type whose template cannot be
5444/// resolved, e.g.
5445///   A<T>::template B<T>
5446class alignas(8) DependentTemplateSpecializationType
  : public TypeWithKeyword,
    public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these

/// The nested name specifier containing the qualifier.
NestedNameSpecifier *NNS;

/// The identifier of the template.
const IdentifierInfo *Name;

DependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword,
                                    NestedNameSpecifier *NNS,
                                    const IdentifierInfo *Name,
                                    ArrayRef<TemplateArgument> Args,
                                    QualType Canon);

const TemplateArgument *getArgBuffer() const {
  return reinterpret_cast<const TemplateArgument*>(this+1);
}

TemplateArgument *getArgBuffer() {
  return reinterpret_cast<TemplateArgument*>(this+1);
}

5471public:
NestedNameSpecifier *getQualifier() const { return NNS; }
const IdentifierInfo *getIdentifier() const { return Name; }

/// Retrieve the template arguments.
const TemplateArgument *getArgs() const {
  return getArgBuffer();
}

/// Retrieve the number of template arguments.
unsigned getNumArgs() const {
  return DependentTemplateSpecializationTypeBits.NumArgs;
}

const TemplateArgument &getArg(unsigned Idx) const; // in TemplateBase.h

ArrayRef<TemplateArgument> template_arguments() const {
  return {getArgs(), getNumArgs()};
}

using iterator = const TemplateArgument *;

iterator begin() const { return getArgs(); }
iterator end() const; // inline in TemplateBase.h

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context) {
  Profile(ID, Context, getKeyword(), NNS, Name, {getArgs(), getNumArgs()});
}

static void Profile(llvm::FoldingSetNodeID &ID,
                    const ASTContext &Context,
                    ElaboratedTypeKeyword Keyword,
                    NestedNameSpecifier *Qualifier,
                    const IdentifierInfo *Name,
                    ArrayRef<TemplateArgument> Args);

static bool classof(const Type *T) {
  return T->getTypeClass() == DependentTemplateSpecialization;
}
5513};

5515/// Represents a pack expansion of types.
5516///
5517/// Pack expansions are part of C++11 variadic templates. A pack
5518/// expansion contains a pattern, which itself contains one or more
5519/// "unexpanded" parameter packs. When instantiated, a pack expansion
5520/// produces a series of types, each instantiated from the pattern of
5521/// the expansion, where the Ith instantiation of the pattern uses the
5522/// Ith arguments bound to each of the unexpanded parameter packs. The
5523/// pack expansion is considered to "expand" these unexpanded
5524/// parameter packs.
5525///
5526/// \code
5527/// template<typename ...Types> struct tuple;
5528///
5529/// template<typename ...Types>
5530/// struct tuple_of_references {
5531///   typedef tuple<Types&...> type;
5532/// };
5533/// \endcode
5534///
5535/// Here, the pack expansion \c Types&... is represented via a
5536/// PackExpansionType whose pattern is Types&.
5537class PackExpansionType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these

/// The pattern of the pack expansion.
QualType Pattern;

PackExpansionType(QualType Pattern, QualType Canon,
                  Optional<unsigned> NumExpansions)
    : Type(PackExpansion, Canon, /*Dependent=*/Pattern->isDependentType(),
           /*InstantiationDependent=*/true,
           /*VariablyModified=*/Pattern->isVariablyModifiedType(),
           /*ContainsUnexpandedParameterPack=*/false),
      Pattern(Pattern) {
  PackExpansionTypeBits.NumExpansions =
      NumExpansions ? *NumExpansions + 1 : 0;
}

5554public:
/// Retrieve the pattern of this pack expansion, which is the
/// type that will be repeatedly instantiated when instantiating the
/// pack expansion itself.
QualType getPattern() const { return Pattern; }

/// Retrieve the number of expansions that this pack expansion will
/// generate, if known.
Optional<unsigned> getNumExpansions() const {
  if (PackExpansionTypeBits.NumExpansions)
    return PackExpansionTypeBits.NumExpansions - 1;
  return None;
}

bool isSugared() const { return !Pattern->isDependentType(); }
QualType desugar() const { return isSugared() ? Pattern : QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getPattern(), getNumExpansions());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType Pattern,
                    Optional<unsigned> NumExpansions) {
  ID.AddPointer(Pattern.getAsOpaquePtr());
  ID.AddBoolean(NumExpansions.hasValue());
  if (NumExpansions)
    ID.AddInteger(*NumExpansions);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == PackExpansion;
}
5586};

5588/// This class wraps the list of protocol qualifiers. For types that can
5589/// take ObjC protocol qualifers, they can subclass this class.
5590template <class T>
5591class ObjCProtocolQualifiers {
5592protected:
ObjCProtocolQualifiers() = default;

ObjCProtocolDecl * const *getProtocolStorage() const {
  return const_cast<ObjCProtocolQualifiers*>(this)->getProtocolStorage();
}

ObjCProtocolDecl **getProtocolStorage() {
  return static_cast<T*>(this)->getProtocolStorageImpl();
}

void setNumProtocols(unsigned N) {
  static_cast<T*>(this)->setNumProtocolsImpl(N);
}

void initialize(ArrayRef<ObjCProtocolDecl *> protocols) {
  setNumProtocols(protocols.size());
  assert(getNumProtocols() == protocols.size() &&((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count"
) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5610, __PRETTY_FUNCTION__))
         "bitfield overflow in protocol count")((getNumProtocols() == protocols.size() && "bitfield overflow in protocol count"
) ? static_cast<void> (0) : __assert_fail ("getNumProtocols() == protocols.size() && \"bitfield overflow in protocol count\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5610, __PRETTY_FUNCTION__));
  if (!protocols.empty())
    memcpy(getProtocolStorage(), protocols.data(),
           protocols.size() * sizeof(ObjCProtocolDecl*));
}

5616public:
using qual_iterator = ObjCProtocolDecl * const *;
using qual_range = llvm::iterator_range<qual_iterator>;

qual_range quals() const { return qual_range(qual_begin(), qual_end()); }
qual_iterator qual_begin() const { return getProtocolStorage(); }
qual_iterator qual_end() const { return qual_begin() + getNumProtocols(); }

bool qual_empty() const { return getNumProtocols() == 0; }

/// Return the number of qualifying protocols in this type, or 0 if
/// there are none.
unsigned getNumProtocols() const {
  return static_cast<const T*>(this)->getNumProtocolsImpl();
}

/// Fetch a protocol by index.
ObjCProtocolDecl *getProtocol(unsigned I) const {
  assert(I < getNumProtocols() && "Out-of-range protocol access")((I < getNumProtocols() && "Out-of-range protocol access"
) ? static_cast<void> (0) : __assert_fail ("I < getNumProtocols() && \"Out-of-range protocol access\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5634, __PRETTY_FUNCTION__));
  return qual_begin()[I];
}

/// Retrieve all of the protocol qualifiers.
ArrayRef<ObjCProtocolDecl *> getProtocols() const {
  return ArrayRef<ObjCProtocolDecl *>(qual_begin(), getNumProtocols());
}
5642};

5644/// Represents a type parameter type in Objective C. It can take
5645/// a list of protocols.
5646class ObjCTypeParamType : public Type,
                        public ObjCProtocolQualifiers<ObjCTypeParamType>,
                        public llvm::FoldingSetNode {
friend class ASTContext;
friend class ObjCProtocolQualifiers<ObjCTypeParamType>;

/// The number of protocols stored on this type.
unsigned NumProtocols : 6;

ObjCTypeParamDecl *OTPDecl;

/// The protocols are stored after the ObjCTypeParamType node. In the
/// canonical type, the list of protocols are sorted alphabetically
/// and uniqued.
ObjCProtocolDecl **getProtocolStorageImpl();

/// Return the number of qualifying protocols in this interface type,
/// or 0 if there are none.
unsigned getNumProtocolsImpl() const {
  return NumProtocols;
}

void setNumProtocolsImpl(unsigned N) {
  NumProtocols = N;
}

ObjCTypeParamType(const ObjCTypeParamDecl *D,
                  QualType can,
                  ArrayRef<ObjCProtocolDecl *> protocols);

5676public:
bool isSugared() const { return true; }
QualType desugar() const { return getCanonicalTypeInternal(); }

static bool classof(const Type *T) {
  return T->getTypeClass() == ObjCTypeParam;
}

void Profile(llvm::FoldingSetNodeID &ID);
static void Profile(llvm::FoldingSetNodeID &ID,
                    const ObjCTypeParamDecl *OTPDecl,
                    ArrayRef<ObjCProtocolDecl *> protocols);

ObjCTypeParamDecl *getDecl() const { return OTPDecl; }
5690};

5692/// Represents a class type in Objective C.
5693///
5694/// Every Objective C type is a combination of a base type, a set of
5695/// type arguments (optional, for parameterized classes) and a list of
5696/// protocols.
5697///
5698/// Given the following declarations:
5699/// \code
5700///   \@class C<T>;
5701///   \@protocol P;
5702/// \endcode
5703///
5704/// 'C' is an ObjCInterfaceType C.  It is sugar for an ObjCObjectType
5705/// with base C and no protocols.
5706///
5707/// 'C<P>' is an unspecialized ObjCObjectType with base C and protocol list [P].
5708/// 'C<C*>' is a specialized ObjCObjectType with type arguments 'C*' and no
5709/// protocol list.
5710/// 'C<C*><P>' is a specialized ObjCObjectType with base C, type arguments 'C*',
5711/// and protocol list [P].
5712///
5713/// 'id' is a TypedefType which is sugar for an ObjCObjectPointerType whose
5714/// pointee is an ObjCObjectType with base BuiltinType::ObjCIdType
5715/// and no protocols.
5716///
5717/// 'id<P>' is an ObjCObjectPointerType whose pointee is an ObjCObjectType
5718/// with base BuiltinType::ObjCIdType and protocol list [P].  Eventually
5719/// this should get its own sugar class to better represent the source.
5720class ObjCObjectType : public Type,
                     public ObjCProtocolQualifiers<ObjCObjectType> {
friend class ObjCProtocolQualifiers<ObjCObjectType>;

// ObjCObjectType.NumTypeArgs - the number of type arguments stored
// after the ObjCObjectPointerType node.
// ObjCObjectType.NumProtocols - the number of protocols stored
// after the type arguments of ObjCObjectPointerType node.
//
// These protocols are those written directly on the type.  If
// protocol qualifiers ever become additive, the iterators will need
// to get kindof complicated.
//
// In the canonical object type, these are sorted alphabetically
// and uniqued.

/// Either a BuiltinType or an InterfaceType or sugar for either.
QualType BaseType;

/// Cached superclass type.
mutable llvm::PointerIntPair<const ObjCObjectType *, 1, bool>
  CachedSuperClassType;

QualType *getTypeArgStorage();
const QualType *getTypeArgStorage() const {
  return const_cast<ObjCObjectType *>(this)->getTypeArgStorage();
}

ObjCProtocolDecl **getProtocolStorageImpl();
/// Return the number of qualifying protocols in this interface type,
/// or 0 if there are none.
unsigned getNumProtocolsImpl() const {
  return ObjCObjectTypeBits.NumProtocols;
}
void setNumProtocolsImpl(unsigned N) {
  ObjCObjectTypeBits.NumProtocols = N;
}

5758protected:
enum Nonce_ObjCInterface { Nonce_ObjCInterface };

ObjCObjectType(QualType Canonical, QualType Base,
               ArrayRef<QualType> typeArgs,
               ArrayRef<ObjCProtocolDecl *> protocols,
               bool isKindOf);

ObjCObjectType(enum Nonce_ObjCInterface)
      : Type(ObjCInterface, QualType(), false, false, false, false),
        BaseType(QualType(this_(), 0)) {
  ObjCObjectTypeBits.NumProtocols = 0;
  ObjCObjectTypeBits.NumTypeArgs = 0;
  ObjCObjectTypeBits.IsKindOf = 0;
}

void computeSuperClassTypeSlow() const;

5776public:
/// Gets the base type of this object type.  This is always (possibly
/// sugar for) one of:
///  - the 'id' builtin type (as opposed to the 'id' type visible to the
///    user, which is a typedef for an ObjCObjectPointerType)
///  - the 'Class' builtin type (same caveat)
///  - an ObjCObjectType (currently always an ObjCInterfaceType)
QualType getBaseType() const { return BaseType; }

bool isObjCId() const {
  return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCId);
}

bool isObjCClass() const {
  return getBaseType()->isSpecificBuiltinType(BuiltinType::ObjCClass);
}

bool isObjCUnqualifiedId() const { return qual_empty() && isObjCId(); }
bool isObjCUnqualifiedClass() const { return qual_empty() && isObjCClass(); }
bool isObjCUnqualifiedIdOrClass() const {
  if (!qual_empty()) return false;
  if (const BuiltinType *T = getBaseType()->getAs<BuiltinType>())
    return T->getKind() == BuiltinType::ObjCId ||
           T->getKind() == BuiltinType::ObjCClass;
  return false;
}
bool isObjCQualifiedId() const { return !qual_empty() && isObjCId(); }
bool isObjCQualifiedClass() const { return !qual_empty() && isObjCClass(); }

/// Gets the interface declaration for this object type, if the base type
/// really is an interface.
ObjCInterfaceDecl *getInterface() const;

/// Determine whether this object type is "specialized", meaning
/// that it has type arguments.
bool isSpecialized() const;

/// Determine whether this object type was written with type arguments.
bool isSpecializedAsWritten() const {
  return ObjCObjectTypeBits.NumTypeArgs > 0;
}

/// Determine whether this object type is "unspecialized", meaning
/// that it has no type arguments.
bool isUnspecialized() const { return !isSpecialized(); }

/// Determine whether this object type is "unspecialized" as
/// written, meaning that it has no type arguments.
bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); }

/// Retrieve the type arguments of this object type (semantically).
ArrayRef<QualType> getTypeArgs() const;

/// Retrieve the type arguments of this object type as they were
/// written.
ArrayRef<QualType> getTypeArgsAsWritten() const {
  return llvm::makeArrayRef(getTypeArgStorage(),
                            ObjCObjectTypeBits.NumTypeArgs);
}

/// Whether this is a "__kindof" type as written.
bool isKindOfTypeAsWritten() const { return ObjCObjectTypeBits.IsKindOf; }

/// Whether this ia a "__kindof" type (semantically).
bool isKindOfType() const;

/// Retrieve the type of the superclass of this object type.
///
/// This operation substitutes any type arguments into the
/// superclass of the current class type, potentially producing a
/// specialization of the superclass type. Produces a null type if
/// there is no superclass.
QualType getSuperClassType() const {
  if (!CachedSuperClassType.getInt())
    computeSuperClassTypeSlow();

  assert(CachedSuperClassType.getInt() && "Superclass not set?")((CachedSuperClassType.getInt() && "Superclass not set?"
) ? static_cast<void> (0) : __assert_fail ("CachedSuperClassType.getInt() && \"Superclass not set?\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 5852, __PRETTY_FUNCTION__));
  return QualType(CachedSuperClassType.getPointer(), 0);
}

/// Strip off the Objective-C "kindof" type and (with it) any
/// protocol qualifiers.
QualType stripObjCKindOfTypeAndQuals(const ASTContext &ctx) const;

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == ObjCObject ||
         T->getTypeClass() == ObjCInterface;
}
5867};

5869/// A class providing a concrete implementation
5870/// of ObjCObjectType, so as to not increase the footprint of
5871/// ObjCInterfaceType.  Code outside of ASTContext and the core type
5872/// system should not reference this type.
5873class ObjCObjectTypeImpl : public ObjCObjectType, public llvm::FoldingSetNode {
friend class ASTContext;

// If anyone adds fields here, ObjCObjectType::getProtocolStorage()
// will need to be modified.

ObjCObjectTypeImpl(QualType Canonical, QualType Base,
                   ArrayRef<QualType> typeArgs,
                   ArrayRef<ObjCProtocolDecl *> protocols,
                   bool isKindOf)
    : ObjCObjectType(Canonical, Base, typeArgs, protocols, isKindOf) {}

5885public:
void Profile(llvm::FoldingSetNodeID &ID);
static void Profile(llvm::FoldingSetNodeID &ID,
                    QualType Base,
                    ArrayRef<QualType> typeArgs,
                    ArrayRef<ObjCProtocolDecl *> protocols,
                    bool isKindOf);
5892};

5894inline QualType *ObjCObjectType::getTypeArgStorage() {
return reinterpret_cast<QualType *>(static_cast<ObjCObjectTypeImpl*>(this)+1);
5896}

5898inline ObjCProtocolDecl **ObjCObjectType::getProtocolStorageImpl() {
  return reinterpret_cast<ObjCProtocolDecl**>(
           getTypeArgStorage() + ObjCObjectTypeBits.NumTypeArgs);
5901}

5903inline ObjCProtocolDecl **ObjCTypeParamType::getProtocolStorageImpl() {
  return reinterpret_cast<ObjCProtocolDecl**>(
           static_cast<ObjCTypeParamType*>(this)+1);
5906}

5908/// Interfaces are the core concept in Objective-C for object oriented design.
5909/// They basically correspond to C++ classes.  There are two kinds of interface
5910/// types: normal interfaces like `NSString`, and qualified interfaces, which
5911/// are qualified with a protocol list like `NSString<NSCopyable, NSAmazing>`.
5912///
5913/// ObjCInterfaceType guarantees the following properties when considered
5914/// as a subtype of its superclass, ObjCObjectType:
5915///   - There are no protocol qualifiers.  To reinforce this, code which
5916///     tries to invoke the protocol methods via an ObjCInterfaceType will
5917///     fail to compile.
5918///   - It is its own base type.  That is, if T is an ObjCInterfaceType*,
5919///     T->getBaseType() == QualType(T, 0).
5920class ObjCInterfaceType : public ObjCObjectType {
friend class ASTContext; // ASTContext creates these.
friend class ASTReader;
friend class ObjCInterfaceDecl;
template <class T> friend class serialization::AbstractTypeReader;

mutable ObjCInterfaceDecl *Decl;

ObjCInterfaceType(const ObjCInterfaceDecl *D)
    : ObjCObjectType(Nonce_ObjCInterface),
      Decl(const_cast<ObjCInterfaceDecl*>(D)) {}

5932public:
/// Get the declaration of this interface.
ObjCInterfaceDecl *getDecl() const { return Decl; }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

static bool classof(const Type *T) {
  return T->getTypeClass() == ObjCInterface;
}

// Nonsense to "hide" certain members of ObjCObjectType within this
// class.  People asking for protocols on an ObjCInterfaceType are
// not going to get what they want: ObjCInterfaceTypes are
// guaranteed to have no protocols.
enum {
  qual_iterator,
  qual_begin,
  qual_end,
  getNumProtocols,
  getProtocol
};
5954};

5956inline ObjCInterfaceDecl *ObjCObjectType::getInterface() const {
QualType baseType = getBaseType();
while (const auto *ObjT = baseType->getAs<ObjCObjectType>()) {
  if (const auto *T = dyn_cast<ObjCInterfaceType>(ObjT))
    return T->getDecl();

  baseType = ObjT->getBaseType();
}

return nullptr;
5966}

5968/// Represents a pointer to an Objective C object.
5969///
5970/// These are constructed from pointer declarators when the pointee type is
5971/// an ObjCObjectType (or sugar for one).  In addition, the 'id' and 'Class'
5972/// types are typedefs for these, and the protocol-qualified types 'id<P>'
5973/// and 'Class<P>' are translated into these.
5974///
5975/// Pointers to pointers to Objective C objects are still PointerTypes;
5976/// only the first level of pointer gets it own type implementation.
5977class ObjCObjectPointerType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

QualType PointeeType;

ObjCObjectPointerType(QualType Canonical, QualType Pointee)
    : Type(ObjCObjectPointer, Canonical,
           Pointee->isDependentType(),
           Pointee->isInstantiationDependentType(),
           Pointee->isVariablyModifiedType(),
           Pointee->containsUnexpandedParameterPack()),
      PointeeType(Pointee) {}

5990public:
/// Gets the type pointed to by this ObjC pointer.
/// The result will always be an ObjCObjectType or sugar thereof.
QualType getPointeeType() const { return PointeeType; }

/// Gets the type pointed to by this ObjC pointer.  Always returns non-null.
///
/// This method is equivalent to getPointeeType() except that
/// it discards any typedefs (or other sugar) between this
/// type and the "outermost" object type.  So for:
/// \code
///   \@class A; \@protocol P; \@protocol Q;
///   typedef A<P> AP;
///   typedef A A1;
///   typedef A1<P> A1P;
///   typedef A1P<Q> A1PQ;
/// \endcode
/// For 'A*', getObjectType() will return 'A'.
/// For 'A<P>*', getObjectType() will return 'A<P>'.
/// For 'AP*', getObjectType() will return 'A<P>'.
/// For 'A1*', getObjectType() will return 'A'.
/// For 'A1<P>*', getObjectType() will return 'A1<P>'.
/// For 'A1P*', getObjectType() will return 'A1<P>'.
/// For 'A1PQ*', getObjectType() will return 'A1<Q>', because
///   adding protocols to a protocol-qualified base discards the
///   old qualifiers (for now).  But if it didn't, getObjectType()
///   would return 'A1P<Q>' (and we'd have to make iterating over
///   qualifiers more complicated).
const ObjCObjectType *getObjectType() const {
  return PointeeType->castAs<ObjCObjectType>();
}

/// If this pointer points to an Objective C
/// \@interface type, gets the type for that interface.  Any protocol
/// qualifiers on the interface are ignored.
///
/// \return null if the base type for this pointer is 'id' or 'Class'
const ObjCInterfaceType *getInterfaceType() const;

/// If this pointer points to an Objective \@interface
/// type, gets the declaration for that interface.
///
/// \return null if the base type for this pointer is 'id' or 'Class'
ObjCInterfaceDecl *getInterfaceDecl() const {
  return getObjectType()->getInterface();
}

/// True if this is equivalent to the 'id' type, i.e. if
/// its object type is the primitive 'id' type with no protocols.
bool isObjCIdType() const {
  return getObjectType()->isObjCUnqualifiedId();
}

/// True if this is equivalent to the 'Class' type,
/// i.e. if its object tive is the primitive 'Class' type with no protocols.
bool isObjCClassType() const {
  return getObjectType()->isObjCUnqualifiedClass();
}

/// True if this is equivalent to the 'id' or 'Class' type,
bool isObjCIdOrClassType() const {
  return getObjectType()->isObjCUnqualifiedIdOrClass();
}

/// True if this is equivalent to 'id<P>' for some non-empty set of
/// protocols.
bool isObjCQualifiedIdType() const {
  return getObjectType()->isObjCQualifiedId();
}

/// True if this is equivalent to 'Class<P>' for some non-empty set of
/// protocols.
bool isObjCQualifiedClassType() const {
  return getObjectType()->isObjCQualifiedClass();
}

/// Whether this is a "__kindof" type.
bool isKindOfType() const { return getObjectType()->isKindOfType(); }

/// Whether this type is specialized, meaning that it has type arguments.
bool isSpecialized() const { return getObjectType()->isSpecialized(); }

/// Whether this type is specialized, meaning that it has type arguments.
bool isSpecializedAsWritten() const {
  return getObjectType()->isSpecializedAsWritten();
}

/// Whether this type is unspecialized, meaning that is has no type arguments.
bool isUnspecialized() const { return getObjectType()->isUnspecialized(); }

/// Determine whether this object type is "unspecialized" as
/// written, meaning that it has no type arguments.
bool isUnspecializedAsWritten() const { return !isSpecializedAsWritten(); }

/// Retrieve the type arguments for this type.
ArrayRef<QualType> getTypeArgs() const {
  return getObjectType()->getTypeArgs();
}

/// Retrieve the type arguments for this type.
ArrayRef<QualType> getTypeArgsAsWritten() const {
  return getObjectType()->getTypeArgsAsWritten();
}

/// An iterator over the qualifiers on the object type.  Provided
/// for convenience.  This will always iterate over the full set of
/// protocols on a type, not just those provided directly.
using qual_iterator = ObjCObjectType::qual_iterator;
using qual_range = llvm::iterator_range<qual_iterator>;

qual_range quals() const { return qual_range(qual_begin(), qual_end()); }

qual_iterator qual_begin() const {
  return getObjectType()->qual_begin();
}

qual_iterator qual_end() const {
  return getObjectType()->qual_end();
}

bool qual_empty() const { return getObjectType()->qual_empty(); }

/// Return the number of qualifying protocols on the object type.
unsigned getNumProtocols() const {
  return getObjectType()->getNumProtocols();
}

/// Retrieve a qualifying protocol by index on the object type.
ObjCProtocolDecl *getProtocol(unsigned I) const {
  return getObjectType()->getProtocol(I);
}

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

/// Retrieve the type of the superclass of this object pointer type.
///
/// This operation substitutes any type arguments into the
/// superclass of the current class type, potentially producing a
/// pointer to a specialization of the superclass type. Produces a
/// null type if there is no superclass.
QualType getSuperClassType() const;

/// Strip off the Objective-C "kindof" type and (with it) any
/// protocol qualifiers.
const ObjCObjectPointerType *stripObjCKindOfTypeAndQuals(
                               const ASTContext &ctx) const;

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getPointeeType());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType T) {
  ID.AddPointer(T.getAsOpaquePtr());
}

static bool classof(const Type *T) {
  return T->getTypeClass() == ObjCObjectPointer;
}
6149};

6151class AtomicType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

QualType ValueType;

AtomicType(QualType ValTy, QualType Canonical)
    : Type(Atomic, Canonical, ValTy->isDependentType(),
           ValTy->isInstantiationDependentType(),
           ValTy->isVariablyModifiedType(),
           ValTy->containsUnexpandedParameterPack()),
      ValueType(ValTy) {}

6163public:
/// Gets the type contained by this atomic type, i.e.
/// the type returned by performing an atomic load of this atomic type.
QualType getValueType() const { return ValueType; }

bool isSugared() const { return false; }
QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getValueType());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType T) {
  ID.AddPointer(T.getAsOpaquePtr());
}

static bool classof(const Type *T) {
  return T->getTypeClass() == Atomic;
}
6182};

6184/// PipeType - OpenCL20.
6185class PipeType : public Type, public llvm::FoldingSetNode {
friend class ASTContext; // ASTContext creates these.

QualType ElementType;
bool isRead;

PipeType(QualType elemType, QualType CanonicalPtr, bool isRead)
    : Type(Pipe, CanonicalPtr, elemType->isDependentType(),
           elemType->isInstantiationDependentType(),
           elemType->isVariablyModifiedType(),
           elemType->containsUnexpandedParameterPack()),
      ElementType(elemType), isRead(isRead) {}

6198public:
QualType getElementType() const { return ElementType; }

bool isSugared() const { return false; }

QualType desugar() const { return QualType(this, 0); }

void Profile(llvm::FoldingSetNodeID &ID) {
  Profile(ID, getElementType(), isReadOnly());
}

static void Profile(llvm::FoldingSetNodeID &ID, QualType T, bool isRead) {
  ID.AddPointer(T.getAsOpaquePtr());
  ID.AddBoolean(isRead);
}

static bool classof(const Type *T) {
  return T->getTypeClass() == Pipe;
}

bool isReadOnly() const { return isRead; }
6219};

6221/// A qualifier set is used to build a set of qualifiers.
6222class QualifierCollector : public Qualifiers {
6223public:
QualifierCollector(Qualifiers Qs = Qualifiers()) : Qualifiers(Qs) {}

/// Collect any qualifiers on the given type and return an
/// unqualified type.  The qualifiers are assumed to be consistent
/// with those already in the type.
const Type *strip(QualType type) {
  addFastQualifiers(type.getLocalFastQualifiers());
  if (!type.hasLocalNonFastQualifiers())
    return type.getTypePtrUnsafe();

  const ExtQuals *extQuals = type.getExtQualsUnsafe();
  addConsistentQualifiers(extQuals->getQualifiers());
  return extQuals->getBaseType();
}

/// Apply the collected qualifiers to the given type.
QualType apply(const ASTContext &Context, QualType QT) const;

/// Apply the collected qualifiers to the given type.
QualType apply(const ASTContext &Context, const Type* T) const;
6244};

6246/// A container of type source information.
6247///
6248/// A client can read the relevant info using TypeLoc wrappers, e.g:
6249/// @code
6250/// TypeLoc TL = TypeSourceInfo->getTypeLoc();
6251/// TL.getBeginLoc().print(OS, SrcMgr);
6252/// @endcode
6253class alignas(8) TypeSourceInfo {
// Contains a memory block after the class, used for type source information,
// allocated by ASTContext.
friend class ASTContext;

QualType Ty;

TypeSourceInfo(QualType ty) : Ty(ty) {}

6262public:
/// Return the type wrapped by this type source info.
QualType getType() const { return Ty; }

/// Return the TypeLoc wrapper for the type source info.
TypeLoc getTypeLoc() const; // implemented in TypeLoc.h

/// Override the type stored in this TypeSourceInfo. Use with caution!
void overrideType(QualType T) { Ty = T; }
6271};

6273// Inline function definitions.

6275inline SplitQualType SplitQualType::getSingleStepDesugaredType() const {
SplitQualType desugar =
  Ty->getLocallyUnqualifiedSingleStepDesugaredType().split();
desugar.Quals.addConsistentQualifiers(Quals);
return desugar;
6280}

6282inline const Type *QualType::getTypePtr() const {
return getCommonPtr()->BaseType;
6284}

6286inline const Type *QualType::getTypePtrOrNull() const {
return (isNull() ? nullptr : getCommonPtr()->BaseType);
6288}

6290inline SplitQualType QualType::split() const {
if (!hasLocalNonFastQualifiers())
  return SplitQualType(getTypePtrUnsafe(),
                       Qualifiers::fromFastMask(getLocalFastQualifiers()));

const ExtQuals *eq = getExtQualsUnsafe();
Qualifiers qs = eq->getQualifiers();
qs.addFastQualifiers(getLocalFastQualifiers());
return SplitQualType(eq->getBaseType(), qs);
6299}

6301inline Qualifiers QualType::getLocalQualifiers() const {
Qualifiers Quals;
if (hasLocalNonFastQualifiers())
  Quals = getExtQualsUnsafe()->getQualifiers();
Quals.addFastQualifiers(getLocalFastQualifiers());
return Quals;
6307}

6309inline Qualifiers QualType::getQualifiers() const {
Qualifiers quals = getCommonPtr()->CanonicalType.getLocalQualifiers();
quals.addFastQualifiers(getLocalFastQualifiers());
return quals;
6313}

6315inline unsigned QualType::getCVRQualifiers() const {
unsigned cvr = getCommonPtr()->CanonicalType.getLocalCVRQualifiers();
cvr |= getLocalCVRQualifiers();
return cvr;
6319}

6321inline QualType QualType::getCanonicalType() const {
QualType canon = getCommonPtr()->CanonicalType;
return canon.withFastQualifiers(getLocalFastQualifiers());
6324}

6326inline bool QualType::isCanonical() const {
return getTypePtr()->isCanonicalUnqualified();
6328}

6330inline bool QualType::isCanonicalAsParam() const {
if (!isCanonical()) return false;
if (hasLocalQualifiers()) return false;

const Type *T = getTypePtr();
if (T->isVariablyModifiedType() && T->hasSizedVLAType())
  return false;

return !isa<FunctionType>(T) && !isa<ArrayType>(T);
6339}

6341inline bool QualType::isConstQualified() const {
return isLocalConstQualified() ||
       getCommonPtr()->CanonicalType.isLocalConstQualified();
6344}

6346inline bool QualType::isRestrictQualified() const {
return isLocalRestrictQualified() ||
       getCommonPtr()->CanonicalType.isLocalRestrictQualified();
6349}


6352inline bool QualType::isVolatileQualified() const {
return isLocalVolatileQualified() ||
       getCommonPtr()->CanonicalType.isLocalVolatileQualified();
6355}

6357inline bool QualType::hasQualifiers() const {
return hasLocalQualifiers() ||
       getCommonPtr()->CanonicalType.hasLocalQualifiers();
6360}

6362inline QualType QualType::getUnqualifiedType() const {
if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers())
  return QualType(getTypePtr(), 0);

return QualType(getSplitUnqualifiedTypeImpl(*this).Ty, 0);
6367}

6369inline SplitQualType QualType::getSplitUnqualifiedType() const {
if (!getTypePtr()->getCanonicalTypeInternal().hasLocalQualifiers())
  return split();

return getSplitUnqualifiedTypeImpl(*this);
6374}

6376inline void QualType::removeLocalConst() {
removeLocalFastQualifiers(Qualifiers::Const);
6378}

6380inline void QualType::removeLocalRestrict() {
removeLocalFastQualifiers(Qualifiers::Restrict);
6382}

6384inline void QualType::removeLocalVolatile() {
removeLocalFastQualifiers(Qualifiers::Volatile);
6386}

6388inline void QualType::removeLocalCVRQualifiers(unsigned Mask) {
assert(!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits")((!(Mask & ~Qualifiers::CVRMask) && "mask has non-CVR bits"
) ? static_cast<void> (0) : __assert_fail ("!(Mask & ~Qualifiers::CVRMask) && \"mask has non-CVR bits\""
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 6389, __PRETTY_FUNCTION__));
static_assert((int)Qualifiers::CVRMask == (int)Qualifiers::FastMask,
              "Fast bits differ from CVR bits!");

// Fast path: we don't need to touch the slow qualifiers.
removeLocalFastQualifiers(Mask);
6395}

6397/// Check if this type has any address space qualifier.
6398inline bool QualType::hasAddressSpace() const {
return getQualifiers().hasAddressSpace();
6400}

6402/// Return the address space of this type.
6403inline LangAS QualType::getAddressSpace() const {
return getQualifiers().getAddressSpace();
6405}

6407/// Return the gc attribute of this type.
6408inline Qualifiers::GC QualType::getObjCGCAttr() const {
return getQualifiers().getObjCGCAttr();
6410}

6412inline bool QualType::hasNonTrivialToPrimitiveDefaultInitializeCUnion() const {
if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl())
  return hasNonTrivialToPrimitiveDefaultInitializeCUnion(RD);
return false;
6416}

6418inline bool QualType::hasNonTrivialToPrimitiveDestructCUnion() const {
if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl())
  return hasNonTrivialToPrimitiveDestructCUnion(RD);
return false;
6422}

6424inline bool QualType::hasNonTrivialToPrimitiveCopyCUnion() const {
if (auto *RD = getTypePtr()->getBaseElementTypeUnsafe()->getAsRecordDecl())
  return hasNonTrivialToPrimitiveCopyCUnion(RD);
return false;
6428}

6430inline FunctionType::ExtInfo getFunctionExtInfo(const Type &t) {
if (const auto *PT = t.getAs<PointerType>()) {
  if (const auto *FT = PT->getPointeeType()->getAs<FunctionType>())
    return FT->getExtInfo();
} else if (const auto *FT = t.getAs<FunctionType>())
  return FT->getExtInfo();

return FunctionType::ExtInfo();
6438}

6440inline FunctionType::ExtInfo getFunctionExtInfo(QualType t) {
return getFunctionExtInfo(*t);
6442}

6444/// Determine whether this type is more
6445/// qualified than the Other type. For example, "const volatile int"
6446/// is more qualified than "const int", "volatile int", and
6447/// "int". However, it is not more qualified than "const volatile
6448/// int".
6449inline bool QualType::isMoreQualifiedThan(QualType other) const {
Qualifiers MyQuals = getQualifiers();
Qualifiers OtherQuals = other.getQualifiers();
return (MyQuals != OtherQuals && MyQuals.compatiblyIncludes(OtherQuals));
6453}

6455/// Determine whether this type is at last
6456/// as qualified as the Other type. For example, "const volatile
6457/// int" is at least as qualified as "const int", "volatile int",
6458/// "int", and "const volatile int".
6459inline bool QualType::isAtLeastAsQualifiedAs(QualType other) const {
Qualifiers OtherQuals = other.getQualifiers();

// Ignore __unaligned qualifier if this type is a void.
if (getUnqualifiedType()->isVoidType())
  OtherQuals.removeUnaligned();

return getQualifiers().compatiblyIncludes(OtherQuals);
6467}

6469/// If Type is a reference type (e.g., const
6470/// int&), returns the type that the reference refers to ("const
6471/// int"). Otherwise, returns the type itself. This routine is used
6472/// throughout Sema to implement C++ 5p6:
6473///
6474///   If an expression initially has the type "reference to T" (8.3.2,
6475///   8.5.3), the type is adjusted to "T" prior to any further
6476///   analysis, the expression designates the object or function
6477///   denoted by the reference, and the expression is an lvalue.
6478inline QualType QualType::getNonReferenceType() const {
if (const auto *RefType = (*this)->getAs<ReferenceType>())
  return RefType->getPointeeType();
else
  return *this;
6483}

6485inline bool QualType::isCForbiddenLValueType() const {
return ((getTypePtr()->isVoidType() && !hasQualifiers()) ||
        getTypePtr()->isFunctionType());
6488}

6490/// Tests whether the type is categorized as a fundamental type.
6491///
6492/// \returns True for types specified in C++0x [basic.fundamental].
6493inline bool Type::isFundamentalType() const {
return isVoidType() ||
       isNullPtrType() ||
       // FIXME: It's really annoying that we don't have an
       // 'isArithmeticType()' which agrees with the standard definition.
       (isArithmeticType() && !isEnumeralType());
6499}

6501/// Tests whether the type is categorized as a compound type.
6502///
6503/// \returns True for types specified in C++0x [basic.compound].
6504inline bool Type::isCompoundType() const {
// C++0x [basic.compound]p1:
//   Compound types can be constructed in the following ways:
//    -- arrays of objects of a given type [...];
return isArrayType() ||
//    -- functions, which have parameters of given types [...];
       isFunctionType() ||
//    -- pointers to void or objects or functions [...];
       isPointerType() ||
//    -- references to objects or functions of a given type. [...]
       isReferenceType() ||
//    -- classes containing a sequence of objects of various types, [...];
       isRecordType() ||
//    -- unions, which are classes capable of containing objects of different
//               types at different times;
       isUnionType() ||
//    -- enumerations, which comprise a set of named constant values. [...];
       isEnumeralType() ||
//    -- pointers to non-static class members, [...].
       isMemberPointerType();
6524}

6526inline bool Type::isFunctionType() const {
return isa<FunctionType>(CanonicalType);
6528}

6530inline bool Type::isPointerType() const {
return isa<PointerType>(CanonicalType);
6532}

6534inline bool Type::isAnyPointerType() const {
return isPointerType() || isObjCObjectPointerType();
6536}

6538inline bool Type::isBlockPointerType() const {
return isa<BlockPointerType>(CanonicalType);
6540}

6542inline bool Type::isReferenceType() const {
return isa<ReferenceType>(CanonicalType);
6544}

6546inline bool Type::isLValueReferenceType() const {
return isa<LValueReferenceType>(CanonicalType);
6548}

6550inline bool Type::isRValueReferenceType() const {
return isa<RValueReferenceType>(CanonicalType);
6552}

6554inline bool Type::isObjectPointerType() const {
// Note: an "object pointer type" is not the same thing as a pointer to an
// object type; rather, it is a pointer to an object type or a pointer to cv
// void.
if (const auto *T = getAs<PointerType>())
  return !T->getPointeeType()->isFunctionType();
else
  return false;
6562}

6564inline bool Type::isFunctionPointerType() const {
if (const auto *T = getAs<PointerType>())
  return T->getPointeeType()->isFunctionType();
else
  return false;
6569}

6571inline bool Type::isFunctionReferenceType() const {
if (const auto *T = getAs<ReferenceType>())
  return T->getPointeeType()->isFunctionType();
else
  return false;
6576}

6578inline bool Type::isMemberPointerType() const {
return isa<MemberPointerType>(CanonicalType);
6580}

6582inline bool Type::isMemberFunctionPointerType() const {
if (const auto *T = getAs<MemberPointerType>())
  return T->isMemberFunctionPointer();
else
  return false;
6587}

6589inline bool Type::isMemberDataPointerType() const {
if (const auto *T = getAs<MemberPointerType>())
  return T->isMemberDataPointer();
else
  return false;
6594}

6596inline bool Type::isArrayType() const {
return isa<ArrayType>(CanonicalType);
6598}

6600inline bool Type::isConstantArrayType() const {
return isa<ConstantArrayType>(CanonicalType);
6602}

6604inline bool Type::isIncompleteArrayType() const {
return isa<IncompleteArrayType>(CanonicalType);
6606}

6608inline bool Type::isVariableArrayType() const {
return isa<VariableArrayType>(CanonicalType);
6610}

6612inline bool Type::isDependentSizedArrayType() const {
return isa<DependentSizedArrayType>(CanonicalType);
6614}

6616inline bool Type::isBuiltinType() const {
return isa<BuiltinType>(CanonicalType);
6618}

6620inline bool Type::isRecordType() const {
return isa<RecordType>(CanonicalType);
17
←
Assuming field 'CanonicalType' is a 'RecordType'→
18
←
Returning the value 1, which participates in a condition later→
6622}

6624inline bool Type::isEnumeralType() const {
return isa<EnumType>(CanonicalType);
6626}

6628inline bool Type::isAnyComplexType() const {
return isa<ComplexType>(CanonicalType);
6630}

6632inline bool Type::isVectorType() const {
return isa<VectorType>(CanonicalType);
6634}

6636inline bool Type::isExtVectorType() const {
return isa<ExtVectorType>(CanonicalType);
6638}

6640inline bool Type::isDependentAddressSpaceType() const {
return isa<DependentAddressSpaceType>(CanonicalType);
6642}

6644inline bool Type::isObjCObjectPointerType() const {
return isa<ObjCObjectPointerType>(CanonicalType);
3
←
Assuming field 'CanonicalType' is a 'ObjCObjectPointerType'→
4
←
Returning the value 1, which participates in a condition later→
6646}

6648inline bool Type::isObjCObjectType() const {
return isa<ObjCObjectType>(CanonicalType);
6650}

6652inline bool Type::isObjCObjectOrInterfaceType() const {
return isa<ObjCInterfaceType>(CanonicalType) ||
  isa<ObjCObjectType>(CanonicalType);
6655}

6657inline bool Type::isAtomicType() const {
return isa<AtomicType>(CanonicalType);
6659}

6661inline bool Type::isUndeducedAutoType() const {
return isa<AutoType>(CanonicalType);
6663}

6665inline bool Type::isObjCQualifiedIdType() const {
if (const auto *OPT = getAs<ObjCObjectPointerType>())
  return OPT->isObjCQualifiedIdType();
return false;
6669}

6671inline bool Type::isObjCQualifiedClassType() const {
if (const auto *OPT = getAs<ObjCObjectPointerType>())
  return OPT->isObjCQualifiedClassType();
return false;
6675}

6677inline bool Type::isObjCIdType() const {
if (const auto *OPT = getAs<ObjCObjectPointerType>())
  return OPT->isObjCIdType();
return false;
6681}

6683inline bool Type::isObjCClassType() const {
if (const auto *OPT = getAs<ObjCObjectPointerType>())
  return OPT->isObjCClassType();
return false;
6687}

6689inline bool Type::isObjCSelType() const {
if (const auto *OPT = getAs<PointerType>())
  return OPT->getPointeeType()->isSpecificBuiltinType(BuiltinType::ObjCSel);
return false;
6693}

6695inline bool Type::isObjCBuiltinType() const {
return isObjCIdType() || isObjCClassType() || isObjCSelType();
6697}

6699inline bool Type::isDecltypeType() const {
return isa<DecltypeType>(this);
6701}

6703#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
inline bool Type::is##Id##Type() const { \
  return isSpecificBuiltinType(BuiltinType::Id); \
}
6707#include "clang/Basic/OpenCLImageTypes.def"

6709inline bool Type::isSamplerT() const {
return isSpecificBuiltinType(BuiltinType::OCLSampler);
6711}

6713inline bool Type::isEventT() const {
return isSpecificBuiltinType(BuiltinType::OCLEvent);
6715}

6717inline bool Type::isClkEventT() const {
return isSpecificBuiltinType(BuiltinType::OCLClkEvent);
6719}

6721inline bool Type::isQueueT() const {
return isSpecificBuiltinType(BuiltinType::OCLQueue);
6723}

6725inline bool Type::isReserveIDT() const {
return isSpecificBuiltinType(BuiltinType::OCLReserveID);
6727}

6729inline bool Type::isImageType() const {
6730#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) is##Id##Type() ||
return
6732#include "clang/Basic/OpenCLImageTypes.def"
    false; // end boolean or operation
6734}

6736inline bool Type::isPipeType() const {
return isa<PipeType>(CanonicalType);
6738}

6740#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
inline bool Type::is##Id##Type() const { \
  return isSpecificBuiltinType(BuiltinType::Id); \
}
6744#include "clang/Basic/OpenCLExtensionTypes.def"

6746inline bool Type::isOCLIntelSubgroupAVCType() const {
6747#define INTEL_SUBGROUP_AVC_TYPE(ExtType, Id) \
isOCLIntelSubgroupAVC##Id##Type() ||
return
6750#include "clang/Basic/OpenCLExtensionTypes.def"
  false; // end of boolean or operation
6752}

6754inline bool Type::isOCLExtOpaqueType() const {
6755#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) is##Id##Type() ||
return
6757#include "clang/Basic/OpenCLExtensionTypes.def"
  false; // end of boolean or operation
6759}

6761inline bool Type::isOpenCLSpecificType() const {
return isSamplerT() || isEventT() || isImageType() || isClkEventT() ||
       isQueueT() || isReserveIDT() || isPipeType() || isOCLExtOpaqueType();
6764}

6766inline bool Type::isTemplateTypeParmType() const {
return isa<TemplateTypeParmType>(CanonicalType);
6768}

6770inline bool Type::isSpecificBuiltinType(unsigned K) const {
if (const BuiltinType *BT = getAs<BuiltinType>())
  if (BT->getKind() == (BuiltinType::Kind) K)
    return true;
return false;
6775}

6777inline bool Type::isPlaceholderType() const {
if (const auto *BT = dyn_cast<BuiltinType>(this))
  return BT->isPlaceholderType();
return false;
6781}

6783inline const BuiltinType *Type::getAsPlaceholderType() const {
if (const auto *BT = dyn_cast<BuiltinType>(this))
  if (BT->isPlaceholderType())
    return BT;
return nullptr;
6788}

6790inline bool Type::isSpecificPlaceholderType(unsigned K) const {
assert(BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K))((BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)) ?
 static_cast<void> (0) : __assert_fail ("BuiltinType::isPlaceholderTypeKind((BuiltinType::Kind) K)"
, "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 6791, __PRETTY_FUNCTION__));
if (const auto *BT = dyn_cast<BuiltinType>(this))
  return (BT->getKind() == (BuiltinType::Kind) K);
return false;
6795}

6797inline bool Type::isNonOverloadPlaceholderType() const {
if (const auto *BT = dyn_cast<BuiltinType>(this))
  return BT->isNonOverloadPlaceholderType();
return false;
6801}

6803inline bool Type::isVoidType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() == BuiltinType::Void;
return false;
6807}

6809inline bool Type::isHalfType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() == BuiltinType::Half;
// FIXME: Should we allow complex __fp16? Probably not.
return false;
6814}

6816inline bool Type::isFloat16Type() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() == BuiltinType::Float16;
return false;
6820}

6822inline bool Type::isFloat128Type() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() == BuiltinType::Float128;
return false;
6826}

6828inline bool Type::isNullPtrType() const {
if (const auto *BT = getAs<BuiltinType>())
  return BT->getKind() == BuiltinType::NullPtr;
return false;
6832}

6834bool IsEnumDeclComplete(EnumDecl *);
6835bool IsEnumDeclScoped(EnumDecl *);

6837inline bool Type::isIntegerType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() >= BuiltinType::Bool &&
         BT->getKind() <= BuiltinType::Int128;
if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) {
  // Incomplete enum types are not treated as integer types.
  // FIXME: In C++, enum types are never integer types.
  return IsEnumDeclComplete(ET->getDecl()) &&
    !IsEnumDeclScoped(ET->getDecl());
}
return false;
6848}

6850inline bool Type::isFixedPointType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) {
  return BT->getKind() >= BuiltinType::ShortAccum &&
         BT->getKind() <= BuiltinType::SatULongFract;
}
return false;
6856}

6858inline bool Type::isFixedPointOrIntegerType() const {
return isFixedPointType() || isIntegerType();
6860}

6862inline bool Type::isSaturatedFixedPointType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) {
  return BT->getKind() >= BuiltinType::SatShortAccum &&
         BT->getKind() <= BuiltinType::SatULongFract;
}
return false;
6868}

6870inline bool Type::isUnsaturatedFixedPointType() const {
return isFixedPointType() && !isSaturatedFixedPointType();
6872}

6874inline bool Type::isSignedFixedPointType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType)) {
  return ((BT->getKind() >= BuiltinType::ShortAccum &&
           BT->getKind() <= BuiltinType::LongAccum) ||
          (BT->getKind() >= BuiltinType::ShortFract &&
           BT->getKind() <= BuiltinType::LongFract) ||
          (BT->getKind() >= BuiltinType::SatShortAccum &&
           BT->getKind() <= BuiltinType::SatLongAccum) ||
          (BT->getKind() >= BuiltinType::SatShortFract &&
           BT->getKind() <= BuiltinType::SatLongFract));
}
return false;
6886}

6888inline bool Type::isUnsignedFixedPointType() const {
return isFixedPointType() && !isSignedFixedPointType();
6890}

6892inline bool Type::isScalarType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() > BuiltinType::Void &&
         BT->getKind() <= BuiltinType::NullPtr;
if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType))
  // Enums are scalar types, but only if they are defined.  Incomplete enums
  // are not treated as scalar types.
  return IsEnumDeclComplete(ET->getDecl());
return isa<PointerType>(CanonicalType) ||
       isa<BlockPointerType>(CanonicalType) ||
       isa<MemberPointerType>(CanonicalType) ||
       isa<ComplexType>(CanonicalType) ||
       isa<ObjCObjectPointerType>(CanonicalType);
6905}

6907inline bool Type::isIntegralOrEnumerationType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() >= BuiltinType::Bool &&
         BT->getKind() <= BuiltinType::Int128;

// Check for a complete enum type; incomplete enum types are not properly an
// enumeration type in the sense required here.
if (const auto *ET = dyn_cast<EnumType>(CanonicalType))
  return IsEnumDeclComplete(ET->getDecl());

return false;
6918}

6920inline bool Type::isBooleanType() const {
if (const auto *BT = dyn_cast<BuiltinType>(CanonicalType))
  return BT->getKind() == BuiltinType::Bool;
return false;
6924}

6926inline bool Type::isUndeducedType() const {
auto *DT = getContainedDeducedType();
return DT && !DT->isDeduced();
6929}

6931/// Determines whether this is a type for which one can define
6932/// an overloaded operator.
6933inline bool Type::isOverloadableType() const {
return isDependentType() || isRecordType() || isEnumeralType();
6935}

6937/// Determines whether this type can decay to a pointer type.
6938inline bool Type::canDecayToPointerType() const {
return isFunctionType() || isArrayType();
6940}

6942inline bool Type::hasPointerRepresentation() const {
return (isPointerType() || isReferenceType() || isBlockPointerType() ||
        isObjCObjectPointerType() || isNullPtrType());
6945}

6947inline bool Type::hasObjCPointerRepresentation() const {
return isObjCObjectPointerType();
6949}

6951inline const Type *Type::getBaseElementTypeUnsafe() const {
const Type *type = this;
while (const ArrayType *arrayType = type->getAsArrayTypeUnsafe())
  type = arrayType->getElementType().getTypePtr();
return type;
6956}

6958inline const Type *Type::getPointeeOrArrayElementType() const {
const Type *type = this;
if (type->isAnyPointerType())
  return type->getPointeeType().getTypePtr();
else if (type->isArrayType())
  return type->getBaseElementTypeUnsafe();
return type;
6965}
6966/// Insertion operator for diagnostics. This allows sending address spaces into
6967/// a diagnostic with <<.
6968inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
                                         LangAS AS) {
DB.AddTaggedVal(static_cast<std::underlying_type_t<LangAS>>(AS),
                DiagnosticsEngine::ArgumentKind::ak_addrspace);
return DB;
6973}

6975/// Insertion operator for partial diagnostics. This allows sending adress
6976/// spaces into a diagnostic with <<.
6977inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
                                         LangAS AS) {
PD.AddTaggedVal(static_cast<std::underlying_type_t<LangAS>>(AS),
                DiagnosticsEngine::ArgumentKind::ak_addrspace);
return PD;
6982}

6984/// Insertion operator for diagnostics. This allows sending Qualifiers into a
6985/// diagnostic with <<.
6986inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
                                         Qualifiers Q) {
DB.AddTaggedVal(Q.getAsOpaqueValue(),
                DiagnosticsEngine::ArgumentKind::ak_qual);
return DB;
6991}

6993/// Insertion operator for partial diagnostics. This allows sending Qualifiers
6994/// into a diagnostic with <<.
6995inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
                                         Qualifiers Q) {
PD.AddTaggedVal(Q.getAsOpaqueValue(),
                DiagnosticsEngine::ArgumentKind::ak_qual);
return PD;
7000}

7002/// Insertion operator for diagnostics.  This allows sending QualType's into a
7003/// diagnostic with <<.
7004inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
                                         QualType T) {
DB.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()),
                DiagnosticsEngine::ak_qualtype);
return DB;
7009}

7011/// Insertion operator for partial diagnostics.  This allows sending QualType's
7012/// into a diagnostic with <<.
7013inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
                                         QualType T) {
PD.AddTaggedVal(reinterpret_cast<intptr_t>(T.getAsOpaquePtr()),
                DiagnosticsEngine::ak_qualtype);
return PD;
7018}

7020// Helper class template that is used by Type::getAs to ensure that one does
7021// not try to look through a qualified type to get to an array type.
7022template <typename T>
7023using TypeIsArrayType =
  std::integral_constant<bool, std::is_same<T, ArrayType>::value ||
                                   std::is_base_of<ArrayType, T>::value>;

7027// Member-template getAs<specific type>'.
7028template <typename T> const T *Type::getAs() const {
static_assert(!TypeIsArrayType<T>::value,
              "ArrayType cannot be used with getAs!");

// If this is directly a T type, return it.
if (const auto *Ty = dyn_cast<T>(this))
  return Ty;

// If the canonical form of this type isn't the right kind, reject it.
if (!isa<T>(CanonicalType))
  return nullptr;

// If this is a typedef for the type, strip the typedef off without
// losing all typedef information.
return cast<T>(getUnqualifiedDesugaredType());
7043}

7045template <typename T> const T *Type::getAsAdjusted() const {
static_assert(!TypeIsArrayType<T>::value, "ArrayType cannot be used with getAsAdjusted!");

// If this is directly a T type, return it.
if (const auto *Ty = dyn_cast<T>(this))
  return Ty;

// If the canonical form of this type isn't the right kind, reject it.
if (!isa<T>(CanonicalType))
  return nullptr;

// Strip off type adjustments that do not modify the underlying nature of the
// type.
const Type *Ty = this;
while (Ty) {
  if (const auto *A = dyn_cast<AttributedType>(Ty))
    Ty = A->getModifiedType().getTypePtr();
  else if (const auto *E = dyn_cast<ElaboratedType>(Ty))
    Ty = E->desugar().getTypePtr();
  else if (const auto *P = dyn_cast<ParenType>(Ty))
    Ty = P->desugar().getTypePtr();
  else if (const auto *A = dyn_cast<AdjustedType>(Ty))
    Ty = A->desugar().getTypePtr();
  else if (const auto *M = dyn_cast<MacroQualifiedType>(Ty))
    Ty = M->desugar().getTypePtr();
  else
    break;
}

// Just because the canonical type is correct does not mean we can use cast<>,
// since we may not have stripped off all the sugar down to the base type.
return dyn_cast<T>(Ty);
7077}

7079inline const ArrayType *Type::getAsArrayTypeUnsafe() const {
// If this is directly an array type, return it.
if (const auto *arr = dyn_cast<ArrayType>(this))
  return arr;

// If the canonical form of this type isn't the right kind, reject it.
if (!isa<ArrayType>(CanonicalType))
  return nullptr;

// If this is a typedef for the type, strip the typedef off without
// losing all typedef information.
return cast<ArrayType>(getUnqualifiedDesugaredType());
7091}

7093template <typename T> const T *Type::castAs() const {
static_assert(!TypeIsArrayType<T>::value,
              "ArrayType cannot be used with castAs!");

if (const auto *ty = dyn_cast<T>(this)) return ty;
assert(isa<T>(CanonicalType))((isa<T>(CanonicalType)) ? static_cast<void> (0) :
 __assert_fail ("isa<T>(CanonicalType)", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 7098, __PRETTY_FUNCTION__));
return cast<T>(getUnqualifiedDesugaredType());
7100}

7102inline const ArrayType *Type::castAsArrayTypeUnsafe() const {
assert(isa<ArrayType>(CanonicalType))((isa<ArrayType>(CanonicalType)) ? static_cast<void>
 (0) : __assert_fail ("isa<ArrayType>(CanonicalType)", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 7103, __PRETTY_FUNCTION__));
if (const auto *arr = dyn_cast<ArrayType>(this)) return arr;
return cast<ArrayType>(getUnqualifiedDesugaredType());
7106}

7108DecayedType::DecayedType(QualType OriginalType, QualType DecayedPtr,
                       QualType CanonicalPtr)
  : AdjustedType(Decayed, OriginalType, DecayedPtr, CanonicalPtr) {
7111#ifndef NDEBUG
QualType Adjusted = getAdjustedType();
(void)AttributedType::stripOuterNullability(Adjusted);
assert(isa<PointerType>(Adjusted))((isa<PointerType>(Adjusted)) ? static_cast<void>
 (0) : __assert_fail ("isa<PointerType>(Adjusted)", "/build/llvm-toolchain-snapshot-11~++20200309111110+2c36c23f347/clang/include/clang/AST/Type.h"
, 7114, __PRETTY_FUNCTION__));
7115#endif
7116}

7118QualType DecayedType::getPointeeType() const {
QualType Decayed = getDecayedType();
(void)AttributedType::stripOuterNullability(Decayed);
return cast<PointerType>(Decayed)->getPointeeType();
7122}

7124// Get the decimal string representation of a fixed point type, represented
7125// as a scaled integer.
7126// TODO: At some point, we should change the arguments to instead just accept an
7127// APFixedPoint instead of APSInt and scale.
7128void FixedPointValueToString(SmallVectorImpl<char> &Str, llvm::APSInt Val,
                           unsigned Scale);

7131} // namespace clang

7133#endif // LLVM_CLANG_AST_TYPE_H