YDB Import 588

1384556be6811c00a4098d426b8eda9be6d2a541

1 files changed, 0 insertions, 775 deletions

diff --git a/contrib/libs/clang14/lib/Basic/IdentifierTable.cpp b/contrib/libs/clang14/lib/Basic/IdentifierTable.cpp
deleted file mode 100644
index b86cb7af69b..00000000000
--- a/contrib/libs/clang14/lib/Basic/IdentifierTable.cpp
+++ /dev/null
@@ -1,775 +0,0 @@
-//===- IdentifierTable.cpp - Hash table for identifier lookup -------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the IdentifierInfo, IdentifierVisitor, and
-// IdentifierTable interfaces.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Basic/IdentifierTable.h"
-#include "clang/Basic/CharInfo.h"
-#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/OperatorKinds.h"
-#include "clang/Basic/Specifiers.h"
-#include "clang/Basic/TargetBuiltins.h"
-#include "clang/Basic/TokenKinds.h"
-#include "llvm/ADT/DenseMapInfo.h"
-#include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/Allocator.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
-#include <cassert>
-#include <cstdio>
-#include <cstring>
-#include <string>
-
-using namespace clang;
-
-// A check to make sure the ObjCOrBuiltinID has sufficient room to store the
-// largest possible target/aux-target combination. If we exceed this, we likely
-// need to just change the ObjCOrBuiltinIDBits value in IdentifierTable.h.
-static_assert(2 * LargestBuiltinID < (2 << (ObjCOrBuiltinIDBits - 1)),
-              "Insufficient ObjCOrBuiltinID Bits");
-
-//===----------------------------------------------------------------------===//
-// IdentifierTable Implementation
-//===----------------------------------------------------------------------===//
-
-IdentifierIterator::~IdentifierIterator() = default;
-
-IdentifierInfoLookup::~IdentifierInfoLookup() = default;
-
-namespace {
-
-/// A simple identifier lookup iterator that represents an
-/// empty sequence of identifiers.
-class EmptyLookupIterator : public IdentifierIterator
-{
-public:
-  StringRef Next() override { return StringRef(); }
-};
-
-} // namespace
-
-IdentifierIterator *IdentifierInfoLookup::getIdentifiers() {
-  return new EmptyLookupIterator();
-}
-
-IdentifierTable::IdentifierTable(IdentifierInfoLookup *ExternalLookup)
-    : HashTable(8192), // Start with space for 8K identifiers.
-      ExternalLookup(ExternalLookup) {}
-
-IdentifierTable::IdentifierTable(const LangOptions &LangOpts,
-                                 IdentifierInfoLookup *ExternalLookup)
-    : IdentifierTable(ExternalLookup) {
-  // Populate the identifier table with info about keywords for the current
-  // language.
-  AddKeywords(LangOpts);
-}
-
-//===----------------------------------------------------------------------===//
-// Language Keyword Implementation
-//===----------------------------------------------------------------------===//
-
-// Constants for TokenKinds.def
-namespace {
-
-  enum {
-    KEYC99        = 0x1,
-    KEYCXX        = 0x2,
-    KEYCXX11      = 0x4,
-    KEYGNU        = 0x8,
-    KEYMS         = 0x10,
-    BOOLSUPPORT   = 0x20,
-    KEYALTIVEC    = 0x40,
-    KEYNOCXX      = 0x80,
-    KEYBORLAND    = 0x100,
-    KEYOPENCLC    = 0x200,
-    KEYC11        = 0x400,
-    KEYNOMS18     = 0x800,
-    KEYNOOPENCL   = 0x1000,
-    WCHARSUPPORT  = 0x2000,
-    HALFSUPPORT   = 0x4000,
-    CHAR8SUPPORT  = 0x8000,
-    KEYCONCEPTS   = 0x10000,
-    KEYOBJC       = 0x20000,
-    KEYZVECTOR    = 0x40000,
-    KEYCOROUTINES = 0x80000,
-    KEYMODULES    = 0x100000,
-    KEYCXX20      = 0x200000,
-    KEYOPENCLCXX  = 0x400000,
-    KEYMSCOMPAT   = 0x800000,
-    KEYSYCL       = 0x1000000,
-    KEYALLCXX = KEYCXX | KEYCXX11 | KEYCXX20,
-    KEYALL = (0x1ffffff & ~KEYNOMS18 &
-              ~KEYNOOPENCL) // KEYNOMS18 and KEYNOOPENCL are used to exclude.
-  };
-
-  /// How a keyword is treated in the selected standard.
-  enum KeywordStatus {
-    KS_Disabled,    // Disabled
-    KS_Extension,   // Is an extension
-    KS_Enabled,     // Enabled
-    KS_Future       // Is a keyword in future standard
-  };
-
-} // namespace
-
-/// Translates flags as specified in TokenKinds.def into keyword status
-/// in the given language standard.
-static KeywordStatus getKeywordStatus(const LangOptions &LangOpts,
-                                      unsigned Flags) {
-  if (Flags == KEYALL) return KS_Enabled;
-  if (LangOpts.CPlusPlus && (Flags & KEYCXX)) return KS_Enabled;
-  if (LangOpts.CPlusPlus11 && (Flags & KEYCXX11)) return KS_Enabled;
-  if (LangOpts.CPlusPlus20 && (Flags & KEYCXX20)) return KS_Enabled;
-  if (LangOpts.C99 && (Flags & KEYC99)) return KS_Enabled;
-  if (LangOpts.GNUKeywords && (Flags & KEYGNU)) return KS_Extension;
-  if (LangOpts.MicrosoftExt && (Flags & KEYMS)) return KS_Extension;
-  if (LangOpts.MSVCCompat && (Flags & KEYMSCOMPAT)) return KS_Enabled;
-  if (LangOpts.Borland && (Flags & KEYBORLAND)) return KS_Extension;
-  if (LangOpts.Bool && (Flags & BOOLSUPPORT)) return KS_Enabled;
-  if (LangOpts.Half && (Flags & HALFSUPPORT)) return KS_Enabled;
-  if (LangOpts.WChar && (Flags & WCHARSUPPORT)) return KS_Enabled;
-  if (LangOpts.Char8 && (Flags & CHAR8SUPPORT)) return KS_Enabled;
-  if (LangOpts.AltiVec && (Flags & KEYALTIVEC)) return KS_Enabled;
-  if (LangOpts.ZVector && (Flags & KEYZVECTOR)) return KS_Enabled;
-  if (LangOpts.OpenCL && !LangOpts.OpenCLCPlusPlus && (Flags & KEYOPENCLC))
-    return KS_Enabled;
-  if (LangOpts.OpenCLCPlusPlus && (Flags & KEYOPENCLCXX)) return KS_Enabled;
-  if (!LangOpts.CPlusPlus && (Flags & KEYNOCXX)) return KS_Enabled;
-  if (LangOpts.C11 && (Flags & KEYC11)) return KS_Enabled;
-  // We treat bridge casts as objective-C keywords so we can warn on them
-  // in non-arc mode.
-  if (LangOpts.ObjC && (Flags & KEYOBJC)) return KS_Enabled;
-  if (LangOpts.CPlusPlus20 && (Flags & KEYCONCEPTS)) return KS_Enabled;
-  if (LangOpts.Coroutines && (Flags & KEYCOROUTINES)) return KS_Enabled;
-  if (LangOpts.ModulesTS && (Flags & KEYMODULES)) return KS_Enabled;
-  if (LangOpts.CPlusPlus && (Flags & KEYALLCXX)) return KS_Future;
-  if (LangOpts.CPlusPlus && !LangOpts.CPlusPlus20 && (Flags & CHAR8SUPPORT))
-    return KS_Future;
-  if (LangOpts.isSYCL() && (Flags & KEYSYCL))
-    return KS_Enabled;
-  return KS_Disabled;
-}
-
-/// AddKeyword - This method is used to associate a token ID with specific
-/// identifiers because they are language keywords.  This causes the lexer to
-/// automatically map matching identifiers to specialized token codes.
-static void AddKeyword(StringRef Keyword,
-                       tok::TokenKind TokenCode, unsigned Flags,
-                       const LangOptions &LangOpts, IdentifierTable &Table) {
-  KeywordStatus AddResult = getKeywordStatus(LangOpts, Flags);
-
-  // Don't add this keyword under MSVCCompat.
-  if (LangOpts.MSVCCompat && (Flags & KEYNOMS18) &&
-      !LangOpts.isCompatibleWithMSVC(LangOptions::MSVC2015))
-    return;
-
-  // Don't add this keyword under OpenCL.
-  if (LangOpts.OpenCL && (Flags & KEYNOOPENCL))
-    return;
-
-  // Don't add this keyword if disabled in this language.
-  if (AddResult == KS_Disabled) return;
-
-  IdentifierInfo &Info =
-      Table.get(Keyword, AddResult == KS_Future ? tok::identifier : TokenCode);
-  Info.setIsExtensionToken(AddResult == KS_Extension);
-  Info.setIsFutureCompatKeyword(AddResult == KS_Future);
-}
-
-/// AddCXXOperatorKeyword - Register a C++ operator keyword alternative
-/// representations.
-static void AddCXXOperatorKeyword(StringRef Keyword,
-                                  tok::TokenKind TokenCode,
-                                  IdentifierTable &Table) {
-  IdentifierInfo &Info = Table.get(Keyword, TokenCode);
-  Info.setIsCPlusPlusOperatorKeyword();
-}
-
-/// AddObjCKeyword - Register an Objective-C \@keyword like "class" "selector"
-/// or "property".
-static void AddObjCKeyword(StringRef Name,
-                           tok::ObjCKeywordKind ObjCID,
-                           IdentifierTable &Table) {
-  Table.get(Name).setObjCKeywordID(ObjCID);
-}
-
-/// AddKeywords - Add all keywords to the symbol table.
-///
-void IdentifierTable::AddKeywords(const LangOptions &LangOpts) {
-  // Add keywords and tokens for the current language.
-#define KEYWORD(NAME, FLAGS) \
-  AddKeyword(StringRef(#NAME), tok::kw_ ## NAME,  \
-             FLAGS, LangOpts, *this);
-#define ALIAS(NAME, TOK, FLAGS) \
-  AddKeyword(StringRef(NAME), tok::kw_ ## TOK,  \
-             FLAGS, LangOpts, *this);
-#define CXX_KEYWORD_OPERATOR(NAME, ALIAS) \
-  if (LangOpts.CXXOperatorNames)          \
-    AddCXXOperatorKeyword(StringRef(#NAME), tok::ALIAS, *this);
-#define OBJC_AT_KEYWORD(NAME)  \
-  if (LangOpts.ObjC)           \
-    AddObjCKeyword(StringRef(#NAME), tok::objc_##NAME, *this);
-#define TESTING_KEYWORD(NAME, FLAGS)
-#include "clang/Basic/TokenKinds.def"
-
-  if (LangOpts.ParseUnknownAnytype)
-    AddKeyword("__unknown_anytype", tok::kw___unknown_anytype, KEYALL,
-               LangOpts, *this);
-
-  if (LangOpts.DeclSpecKeyword)
-    AddKeyword("__declspec", tok::kw___declspec, KEYALL, LangOpts, *this);
-
-  if (LangOpts.IEEE128)
-    AddKeyword("__ieee128", tok::kw___float128, KEYALL, LangOpts, *this);
-
-  // Add the 'import' contextual keyword.
-  get("import").setModulesImport(true);
-}
-
-/// Checks if the specified token kind represents a keyword in the
-/// specified language.
-/// \returns Status of the keyword in the language.
-static KeywordStatus getTokenKwStatus(const LangOptions &LangOpts,
-                                      tok::TokenKind K) {
-  switch (K) {
-#define KEYWORD(NAME, FLAGS) \
-  case tok::kw_##NAME: return getKeywordStatus(LangOpts, FLAGS);
-#include "clang/Basic/TokenKinds.def"
-  default: return KS_Disabled;
-  }
-}
-
-/// Returns true if the identifier represents a keyword in the
-/// specified language.
-bool IdentifierInfo::isKeyword(const LangOptions &LangOpts) const {
-  switch (getTokenKwStatus(LangOpts, getTokenID())) {
-  case KS_Enabled:
-  case KS_Extension:
-    return true;
-  default:
-    return false;
-  }
-}
-
-/// Returns true if the identifier represents a C++ keyword in the
-/// specified language.
-bool IdentifierInfo::isCPlusPlusKeyword(const LangOptions &LangOpts) const {
-  if (!LangOpts.CPlusPlus || !isKeyword(LangOpts))
-    return false;
-  // This is a C++ keyword if this identifier is not a keyword when checked
-  // using LangOptions without C++ support.
-  LangOptions LangOptsNoCPP = LangOpts;
-  LangOptsNoCPP.CPlusPlus = false;
-  LangOptsNoCPP.CPlusPlus11 = false;
-  LangOptsNoCPP.CPlusPlus20 = false;
-  return !isKeyword(LangOptsNoCPP);
-}
-
-ReservedIdentifierStatus
-IdentifierInfo::isReserved(const LangOptions &LangOpts) const {
-  StringRef Name = getName();
-
-  // '_' is a reserved identifier, but its use is so common (e.g. to store
-  // ignored values) that we don't warn on it.
-  if (Name.size() <= 1)
-    return ReservedIdentifierStatus::NotReserved;
-
-  // [lex.name] p3
-  if (Name[0] == '_') {
-
-    // Each name that begins with an underscore followed by an uppercase letter
-    // or another underscore is reserved.
-    if (Name[1] == '_')
-      return ReservedIdentifierStatus::StartsWithDoubleUnderscore;
-
-    if ('A' <= Name[1] && Name[1] <= 'Z')
-      return ReservedIdentifierStatus::
-          StartsWithUnderscoreFollowedByCapitalLetter;
-
-    // This is a bit misleading: it actually means it's only reserved if we're
-    // at global scope because it starts with an underscore.
-    return ReservedIdentifierStatus::StartsWithUnderscoreAtGlobalScope;
-  }
-
-  // Each name that contains a double underscore (__) is reserved.
-  if (LangOpts.CPlusPlus && Name.contains("__"))
-    return ReservedIdentifierStatus::ContainsDoubleUnderscore;
-
-  return ReservedIdentifierStatus::NotReserved;
-}
-
-StringRef IdentifierInfo::deuglifiedName() const {
-  StringRef Name = getName();
-  if (Name.size() >= 2 && Name.front() == '_' &&
-      (Name[1] == '_' || (Name[1] >= 'A' && Name[1] <= 'Z')))
-    return Name.ltrim('_');
-  return Name;
-}
-
-tok::PPKeywordKind IdentifierInfo::getPPKeywordID() const {
-  // We use a perfect hash function here involving the length of the keyword,
-  // the first and third character.  For preprocessor ID's there are no
-  // collisions (if there were, the switch below would complain about duplicate
-  // case values).  Note that this depends on 'if' being null terminated.
-
-#define HASH(LEN, FIRST, THIRD) \
-  (LEN << 5) + (((FIRST-'a') + (THIRD-'a')) & 31)
-#define CASE(LEN, FIRST, THIRD, NAME) \
-  case HASH(LEN, FIRST, THIRD): \
-    return memcmp(Name, #NAME, LEN) ? tok::pp_not_keyword : tok::pp_ ## NAME
-
-  unsigned Len = getLength();
-  if (Len < 2) return tok::pp_not_keyword;
-  const char *Name = getNameStart();
-  switch (HASH(Len, Name[0], Name[2])) {
-  default: return tok::pp_not_keyword;
-  CASE( 2, 'i', '\0', if);
-  CASE( 4, 'e', 'i', elif);
-  CASE( 4, 'e', 's', else);
-  CASE( 4, 'l', 'n', line);
-  CASE( 4, 's', 'c', sccs);
-  CASE( 5, 'e', 'd', endif);
-  CASE( 5, 'e', 'r', error);
-  CASE( 5, 'i', 'e', ident);
-  CASE( 5, 'i', 'd', ifdef);
-  CASE( 5, 'u', 'd', undef);
-
-  CASE( 6, 'a', 's', assert);
-  CASE( 6, 'd', 'f', define);
-  CASE( 6, 'i', 'n', ifndef);
-  CASE( 6, 'i', 'p', import);
-  CASE( 6, 'p', 'a', pragma);
-
-  CASE( 7, 'd', 'f', defined);
-  CASE( 7, 'e', 'i', elifdef);
-  CASE( 7, 'i', 'c', include);
-  CASE( 7, 'w', 'r', warning);
-
-  CASE( 8, 'e', 'i', elifndef);
-  CASE( 8, 'u', 'a', unassert);
-  CASE(12, 'i', 'c', include_next);
-
-  CASE(14, '_', 'p', __public_macro);
-
-  CASE(15, '_', 'p', __private_macro);
-
-  CASE(16, '_', 'i', __include_macros);
-#undef CASE
-#undef HASH
-  }
-}
-
-//===----------------------------------------------------------------------===//
-// Stats Implementation
-//===----------------------------------------------------------------------===//
-
-/// PrintStats - Print statistics about how well the identifier table is doing
-/// at hashing identifiers.
-void IdentifierTable::PrintStats() const {
-  unsigned NumBuckets = HashTable.getNumBuckets();
-  unsigned NumIdentifiers = HashTable.getNumItems();
-  unsigned NumEmptyBuckets = NumBuckets-NumIdentifiers;
-  unsigned AverageIdentifierSize = 0;
-  unsigned MaxIdentifierLength = 0;
-
-  // TODO: Figure out maximum times an identifier had to probe for -stats.
-  for (llvm::StringMap<IdentifierInfo*, llvm::BumpPtrAllocator>::const_iterator
-       I = HashTable.begin(), E = HashTable.end(); I != E; ++I) {
-    unsigned IdLen = I->getKeyLength();
-    AverageIdentifierSize += IdLen;
-    if (MaxIdentifierLength < IdLen)
-      MaxIdentifierLength = IdLen;
-  }
-
-  fprintf(stderr, "\n*** Identifier Table Stats:\n");
-  fprintf(stderr, "# Identifiers:   %d\n", NumIdentifiers);
-  fprintf(stderr, "# Empty Buckets: %d\n", NumEmptyBuckets);
-  fprintf(stderr, "Hash density (#identifiers per bucket): %f\n",
-          NumIdentifiers/(double)NumBuckets);
-  fprintf(stderr, "Ave identifier length: %f\n",
-          (AverageIdentifierSize/(double)NumIdentifiers));
-  fprintf(stderr, "Max identifier length: %d\n", MaxIdentifierLength);
-
-  // Compute statistics about the memory allocated for identifiers.
-  HashTable.getAllocator().PrintStats();
-}
-
-//===----------------------------------------------------------------------===//
-// SelectorTable Implementation
-//===----------------------------------------------------------------------===//
-
-unsigned llvm::DenseMapInfo<clang::Selector>::getHashValue(clang::Selector S) {
-  return DenseMapInfo<void*>::getHashValue(S.getAsOpaquePtr());
-}
-
-namespace clang {
-
-/// One of these variable length records is kept for each
-/// selector containing more than one keyword. We use a folding set
-/// to unique aggregate names (keyword selectors in ObjC parlance). Access to
-/// this class is provided strictly through Selector.
-class alignas(IdentifierInfoAlignment) MultiKeywordSelector
-    : public detail::DeclarationNameExtra,
-      public llvm::FoldingSetNode {
-  MultiKeywordSelector(unsigned nKeys) : DeclarationNameExtra(nKeys) {}
-
-public:
-  // Constructor for keyword selectors.
-  MultiKeywordSelector(unsigned nKeys, IdentifierInfo **IIV)
-      : DeclarationNameExtra(nKeys) {
-    assert((nKeys > 1) && "not a multi-keyword selector");
-
-    // Fill in the trailing keyword array.
-    IdentifierInfo **KeyInfo = reinterpret_cast<IdentifierInfo **>(this + 1);
-    for (unsigned i = 0; i != nKeys; ++i)
-      KeyInfo[i] = IIV[i];
-  }
-
-  // getName - Derive the full selector name and return it.
-  std::string getName() const;
-
-  using DeclarationNameExtra::getNumArgs;
-
-  using keyword_iterator = IdentifierInfo *const *;
-
-  keyword_iterator keyword_begin() const {
-    return reinterpret_cast<keyword_iterator>(this + 1);
-  }
-
-  keyword_iterator keyword_end() const {
-    return keyword_begin() + getNumArgs();
-  }
-
-  IdentifierInfo *getIdentifierInfoForSlot(unsigned i) const {
-    assert(i < getNumArgs() && "getIdentifierInfoForSlot(): illegal index");
-    return keyword_begin()[i];
-  }
-
-  static void Profile(llvm::FoldingSetNodeID &ID, keyword_iterator ArgTys,
-                      unsigned NumArgs) {
-    ID.AddInteger(NumArgs);
-    for (unsigned i = 0; i != NumArgs; ++i)
-      ID.AddPointer(ArgTys[i]);
-  }
-
-  void Profile(llvm::FoldingSetNodeID &ID) {
-    Profile(ID, keyword_begin(), getNumArgs());
-  }
-};
-
-} // namespace clang.
-
-bool Selector::isKeywordSelector(ArrayRef<StringRef> Names) const {
-  assert(!Names.empty() && "must have >= 1 selector slots");
-  if (getNumArgs() != Names.size())
-    return false;
-  for (unsigned I = 0, E = Names.size(); I != E; ++I) {
-    if (getNameForSlot(I) != Names[I])
-      return false;
-  }
-  return true;
-}
-
-bool Selector::isUnarySelector(StringRef Name) const {
-  return isUnarySelector() && getNameForSlot(0) == Name;
-}
-
-unsigned Selector::getNumArgs() const {
-  unsigned IIF = getIdentifierInfoFlag();
-  if (IIF <= ZeroArg)
-    return 0;
-  if (IIF == OneArg)
-    return 1;
-  // We point to a MultiKeywordSelector.
-  MultiKeywordSelector *SI = getMultiKeywordSelector();
-  return SI->getNumArgs();
-}
-
-IdentifierInfo *Selector::getIdentifierInfoForSlot(unsigned argIndex) const {
-  if (getIdentifierInfoFlag() < MultiArg) {
-    assert(argIndex == 0 && "illegal keyword index");
-    return getAsIdentifierInfo();
-  }
-
-  // We point to a MultiKeywordSelector.
-  MultiKeywordSelector *SI = getMultiKeywordSelector();
-  return SI->getIdentifierInfoForSlot(argIndex);
-}
-
-StringRef Selector::getNameForSlot(unsigned int argIndex) const {
-  IdentifierInfo *II = getIdentifierInfoForSlot(argIndex);
-  return II ? II->getName() : StringRef();
-}
-
-std::string MultiKeywordSelector::getName() const {
-  SmallString<256> Str;
-  llvm::raw_svector_ostream OS(Str);
-  for (keyword_iterator I = keyword_begin(), E = keyword_end(); I != E; ++I) {
-    if (*I)
-      OS << (*I)->getName();
-    OS << ':';
-  }
-
-  return std::string(OS.str());
-}
-
-std::string Selector::getAsString() const {
-  if (InfoPtr == 0)
-    return "<null selector>";
-
-  if (getIdentifierInfoFlag() < MultiArg) {
-    IdentifierInfo *II = getAsIdentifierInfo();
-
-    if (getNumArgs() == 0) {
-      assert(II && "If the number of arguments is 0 then II is guaranteed to "
-                   "not be null.");
-      return std::string(II->getName());
-    }
-
-    if (!II)
-      return ":";
-
-    return II->getName().str() + ":";
-  }
-
-  // We have a multiple keyword selector.
-  return getMultiKeywordSelector()->getName();
-}
-
-void Selector::print(llvm::raw_ostream &OS) const {
-  OS << getAsString();
-}
-
-LLVM_DUMP_METHOD void Selector::dump() const { print(llvm::errs()); }
-
-/// Interpreting the given string using the normal CamelCase
-/// conventions, determine whether the given string starts with the
-/// given "word", which is assumed to end in a lowercase letter.
-static bool startsWithWord(StringRef name, StringRef word) {
-  if (name.size() < word.size()) return false;
-  return ((name.size() == word.size() || !isLowercase(name[word.size()])) &&
-          name.startswith(word));
-}
-
-ObjCMethodFamily Selector::getMethodFamilyImpl(Selector sel) {
-  IdentifierInfo *first = sel.getIdentifierInfoForSlot(0);
-  if (!first) return OMF_None;
-
-  StringRef name = first->getName();
-  if (sel.isUnarySelector()) {
-    if (name == "autorelease") return OMF_autorelease;
-    if (name == "dealloc") return OMF_dealloc;
-    if (name == "finalize") return OMF_finalize;
-    if (name == "release") return OMF_release;
-    if (name == "retain") return OMF_retain;
-    if (name == "retainCount") return OMF_retainCount;
-    if (name == "self") return OMF_self;
-    if (name == "initialize") return OMF_initialize;
-  }
-
-  if (name == "performSelector" || name == "performSelectorInBackground" ||
-      name == "performSelectorOnMainThread")
-    return OMF_performSelector;
-
-  // The other method families may begin with a prefix of underscores.
-  while (!name.empty() && name.front() == '_')
-    name = name.substr(1);
-
-  if (name.empty()) return OMF_None;
-  switch (name.front()) {
-  case 'a':
-    if (startsWithWord(name, "alloc")) return OMF_alloc;
-    break;
-  case 'c':
-    if (startsWithWord(name, "copy")) return OMF_copy;
-    break;
-  case 'i':
-    if (startsWithWord(name, "init")) return OMF_init;
-    break;
-  case 'm':
-    if (startsWithWord(name, "mutableCopy")) return OMF_mutableCopy;
-    break;
-  case 'n':
-    if (startsWithWord(name, "new")) return OMF_new;
-    break;
-  default:
-    break;
-  }
-
-  return OMF_None;
-}
-
-ObjCInstanceTypeFamily Selector::getInstTypeMethodFamily(Selector sel) {
-  IdentifierInfo *first = sel.getIdentifierInfoForSlot(0);
-  if (!first) return OIT_None;
-
-  StringRef name = first->getName();
-
-  if (name.empty()) return OIT_None;
-  switch (name.front()) {
-    case 'a':
-      if (startsWithWord(name, "array")) return OIT_Array;
-      break;
-    case 'd':
-      if (startsWithWord(name, "default")) return OIT_ReturnsSelf;
-      if (startsWithWord(name, "dictionary")) return OIT_Dictionary;
-      break;
-    case 's':
-      if (startsWithWord(name, "shared")) return OIT_ReturnsSelf;
-      if (startsWithWord(name, "standard")) return OIT_Singleton;
-      break;
-    case 'i':
-      if (startsWithWord(name, "init")) return OIT_Init;
-      break;
-    default:
-      break;
-  }
-  return OIT_None;
-}
-
-ObjCStringFormatFamily Selector::getStringFormatFamilyImpl(Selector sel) {
-  IdentifierInfo *first = sel.getIdentifierInfoForSlot(0);
-  if (!first) return SFF_None;
-
-  StringRef name = first->getName();
-
-  switch (name.front()) {
-    case 'a':
-      if (name == "appendFormat") return SFF_NSString;
-      break;
-
-    case 'i':
-      if (name == "initWithFormat") return SFF_NSString;
-      break;
-
-    case 'l':
-      if (name == "localizedStringWithFormat") return SFF_NSString;
-      break;
-
-    case 's':
-      if (name == "stringByAppendingFormat" ||
-          name == "stringWithFormat") return SFF_NSString;
-      break;
-  }
-  return SFF_None;
-}
-
-namespace {
-
-struct SelectorTableImpl {
-  llvm::FoldingSet<MultiKeywordSelector> Table;
-  llvm::BumpPtrAllocator Allocator;
-};
-
-} // namespace
-
-static SelectorTableImpl &getSelectorTableImpl(void *P) {
-  return *static_cast<SelectorTableImpl*>(P);
-}
-
-SmallString<64>
-SelectorTable::constructSetterName(StringRef Name) {
-  SmallString<64> SetterName("set");
-  SetterName += Name;
-  SetterName[3] = toUppercase(SetterName[3]);
-  return SetterName;
-}
-
-Selector
-SelectorTable::constructSetterSelector(IdentifierTable &Idents,
-                                       SelectorTable &SelTable,
-                                       const IdentifierInfo *Name) {
-  IdentifierInfo *SetterName =
-    &Idents.get(constructSetterName(Name->getName()));
-  return SelTable.getUnarySelector(SetterName);
-}
-
-std::string SelectorTable::getPropertyNameFromSetterSelector(Selector Sel) {
-  StringRef Name = Sel.getNameForSlot(0);
-  assert(Name.startswith("set") && "invalid setter name");
-  return (Twine(toLowercase(Name[3])) + Name.drop_front(4)).str();
-}
-
-size_t SelectorTable::getTotalMemory() const {
-  SelectorTableImpl &SelTabImpl = getSelectorTableImpl(Impl);
-  return SelTabImpl.Allocator.getTotalMemory();
-}
-
-Selector SelectorTable::getSelector(unsigned nKeys, IdentifierInfo **IIV) {
-  if (nKeys < 2)
-    return Selector(IIV[0], nKeys);
-
-  SelectorTableImpl &SelTabImpl = getSelectorTableImpl(Impl);
-
-  // Unique selector, to guarantee there is one per name.
-  llvm::FoldingSetNodeID ID;
-  MultiKeywordSelector::Profile(ID, IIV, nKeys);
-
-  void *InsertPos = nullptr;
-  if (MultiKeywordSelector *SI =
-        SelTabImpl.Table.FindNodeOrInsertPos(ID, InsertPos))
-    return Selector(SI);
-
-  // MultiKeywordSelector objects are not allocated with new because they have a
-  // variable size array (for parameter types) at the end of them.
-  unsigned Size = sizeof(MultiKeywordSelector) + nKeys*sizeof(IdentifierInfo *);
-  MultiKeywordSelector *SI =
-      (MultiKeywordSelector *)SelTabImpl.Allocator.Allocate(
-          Size, alignof(MultiKeywordSelector));
-  new (SI) MultiKeywordSelector(nKeys, IIV);
-  SelTabImpl.Table.InsertNode(SI, InsertPos);
-  return Selector(SI);
-}
-
-SelectorTable::SelectorTable() {
-  Impl = new SelectorTableImpl();
-}
-
-SelectorTable::~SelectorTable() {
-  delete &getSelectorTableImpl(Impl);
-}
-
-const char *clang::getOperatorSpelling(OverloadedOperatorKind Operator) {
-  switch (Operator) {
-  case OO_None:
-  case NUM_OVERLOADED_OPERATORS:
-    return nullptr;
-
-#define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \
-  case OO_##Name: return Spelling;
-#include "clang/Basic/OperatorKinds.def"
-  }
-
-  llvm_unreachable("Invalid OverloadedOperatorKind!");
-}
-
-StringRef clang::getNullabilitySpelling(NullabilityKind kind,
-                                        bool isContextSensitive) {
-  switch (kind) {
-  case NullabilityKind::NonNull:
-    return isContextSensitive ? "nonnull" : "_Nonnull";
-
-  case NullabilityKind::Nullable:
-    return isContextSensitive ? "nullable" : "_Nullable";
-
-  case NullabilityKind::NullableResult:
-    assert(!isContextSensitive &&
-           "_Nullable_result isn't supported as context-sensitive keyword");
-    return "_Nullable_result";
-
-  case NullabilityKind::Unspecified:
-    return isContextSensitive ? "null_unspecified" : "_Null_unspecified";
-  }
-  llvm_unreachable("Unknown nullability kind.");
-}