Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 2295 deletions

diff --git a/gnu/llvm/tools/clang/lib/Parse/Parser.cpp b/gnu/llvm/tools/clang/lib/Parse/Parser.cpp
deleted file mode 100644
index a93db799f8f..00000000000
--- a/gnu/llvm/tools/clang/lib/Parse/Parser.cpp
+++ /dev/null
@@ -1,2295 +0,0 @@
-//===--- Parser.cpp - C Language Family Parser ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file implements the Parser interfaces.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Parse/Parser.h"
-#include "clang/AST/ASTConsumer.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/DeclTemplate.h"
-#include "clang/Parse/ParseDiagnostic.h"
-#include "clang/Parse/RAIIObjectsForParser.h"
-#include "clang/Sema/DeclSpec.h"
-#include "clang/Sema/ParsedTemplate.h"
-#include "clang/Sema/Scope.h"
-#include "llvm/Support/Path.h"
-using namespace clang;
-
-
-namespace {
-/// A comment handler that passes comments found by the preprocessor
-/// to the parser action.
-class ActionCommentHandler : public CommentHandler {
-  Sema &S;
-
-public:
-  explicit ActionCommentHandler(Sema &S) : S(S) { }
-
-  bool HandleComment(Preprocessor &PP, SourceRange Comment) override {
-    S.ActOnComment(Comment);
-    return false;
-  }
-};
-} // end anonymous namespace
-
-IdentifierInfo *Parser::getSEHExceptKeyword() {
-  // __except is accepted as a (contextual) keyword
-  if (!Ident__except && (getLangOpts().MicrosoftExt || getLangOpts().Borland))
-    Ident__except = PP.getIdentifierInfo("__except");
-
-  return Ident__except;
-}
-
-Parser::Parser(Preprocessor &pp, Sema &actions, bool skipFunctionBodies)
-  : PP(pp), Actions(actions), Diags(PP.getDiagnostics()),
-    GreaterThanIsOperator(true), ColonIsSacred(false),
-    InMessageExpression(false), TemplateParameterDepth(0),
-    ParsingInObjCContainer(false) {
-  SkipFunctionBodies = pp.isCodeCompletionEnabled() || skipFunctionBodies;
-  Tok.startToken();
-  Tok.setKind(tok::eof);
-  Actions.CurScope = nullptr;
-  NumCachedScopes = 0;
-  CurParsedObjCImpl = nullptr;
-
-  // Add #pragma handlers. These are removed and destroyed in the
-  // destructor.
-  initializePragmaHandlers();
-
-  CommentSemaHandler.reset(new ActionCommentHandler(actions));
-  PP.addCommentHandler(CommentSemaHandler.get());
-
-  PP.setCodeCompletionHandler(*this);
-}
-
-DiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) {
-  return Diags.Report(Loc, DiagID);
-}
-
-DiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) {
-  return Diag(Tok.getLocation(), DiagID);
-}
-
-/// Emits a diagnostic suggesting parentheses surrounding a
-/// given range.
-///
-/// \param Loc The location where we'll emit the diagnostic.
-/// \param DK The kind of diagnostic to emit.
-/// \param ParenRange Source range enclosing code that should be parenthesized.
-void Parser::SuggestParentheses(SourceLocation Loc, unsigned DK,
-                                SourceRange ParenRange) {
-  SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd());
-  if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) {
-    // We can't display the parentheses, so just dig the
-    // warning/error and return.
-    Diag(Loc, DK);
-    return;
-  }
-
-  Diag(Loc, DK)
-    << FixItHint::CreateInsertion(ParenRange.getBegin(), "(")
-    << FixItHint::CreateInsertion(EndLoc, ")");
-}
-
-static bool IsCommonTypo(tok::TokenKind ExpectedTok, const Token &Tok) {
-  switch (ExpectedTok) {
-  case tok::semi:
-    return Tok.is(tok::colon) || Tok.is(tok::comma); // : or , for ;
-  default: return false;
-  }
-}
-
-bool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID,
-                              StringRef Msg) {
-  if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) {
-    ConsumeAnyToken();
-    return false;
-  }
-
-  // Detect common single-character typos and resume.
-  if (IsCommonTypo(ExpectedTok, Tok)) {
-    SourceLocation Loc = Tok.getLocation();
-    {
-      DiagnosticBuilder DB = Diag(Loc, DiagID);
-      DB << FixItHint::CreateReplacement(
-                SourceRange(Loc), tok::getPunctuatorSpelling(ExpectedTok));
-      if (DiagID == diag::err_expected)
-        DB << ExpectedTok;
-      else if (DiagID == diag::err_expected_after)
-        DB << Msg << ExpectedTok;
-      else
-        DB << Msg;
-    }
-
-    // Pretend there wasn't a problem.
-    ConsumeAnyToken();
-    return false;
-  }
-
-  SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation);
-  const char *Spelling = nullptr;
-  if (EndLoc.isValid())
-    Spelling = tok::getPunctuatorSpelling(ExpectedTok);
-
-  DiagnosticBuilder DB =
-      Spelling
-          ? Diag(EndLoc, DiagID) << FixItHint::CreateInsertion(EndLoc, Spelling)
-          : Diag(Tok, DiagID);
-  if (DiagID == diag::err_expected)
-    DB << ExpectedTok;
-  else if (DiagID == diag::err_expected_after)
-    DB << Msg << ExpectedTok;
-  else
-    DB << Msg;
-
-  return true;
-}
-
-bool Parser::ExpectAndConsumeSemi(unsigned DiagID) {
-  if (TryConsumeToken(tok::semi))
-    return false;
-
-  if (Tok.is(tok::code_completion)) {
-    handleUnexpectedCodeCompletionToken();
-    return false;
-  }
-
-  if ((Tok.is(tok::r_paren) || Tok.is(tok::r_square)) &&
-      NextToken().is(tok::semi)) {
-    Diag(Tok, diag::err_extraneous_token_before_semi)
-      << PP.getSpelling(Tok)
-      << FixItHint::CreateRemoval(Tok.getLocation());
-    ConsumeAnyToken(); // The ')' or ']'.
-    ConsumeToken(); // The ';'.
-    return false;
-  }
-
-  return ExpectAndConsume(tok::semi, DiagID);
-}
-
-void Parser::ConsumeExtraSemi(ExtraSemiKind Kind, unsigned TST) {
-  if (!Tok.is(tok::semi)) return;
-
-  bool HadMultipleSemis = false;
-  SourceLocation StartLoc = Tok.getLocation();
-  SourceLocation EndLoc = Tok.getLocation();
-  ConsumeToken();
-
-  while ((Tok.is(tok::semi) && !Tok.isAtStartOfLine())) {
-    HadMultipleSemis = true;
-    EndLoc = Tok.getLocation();
-    ConsumeToken();
-  }
-
-  // C++11 allows extra semicolons at namespace scope, but not in any of the
-  // other contexts.
-  if (Kind == OutsideFunction && getLangOpts().CPlusPlus) {
-    if (getLangOpts().CPlusPlus11)
-      Diag(StartLoc, diag::warn_cxx98_compat_top_level_semi)
-          << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc));
-    else
-      Diag(StartLoc, diag::ext_extra_semi_cxx11)
-          << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc));
-    return;
-  }
-
-  if (Kind != AfterMemberFunctionDefinition || HadMultipleSemis)
-    Diag(StartLoc, diag::ext_extra_semi)
-        << Kind << DeclSpec::getSpecifierName((DeclSpec::TST)TST,
-                                    Actions.getASTContext().getPrintingPolicy())
-        << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc));
-  else
-    // A single semicolon is valid after a member function definition.
-    Diag(StartLoc, diag::warn_extra_semi_after_mem_fn_def)
-      << FixItHint::CreateRemoval(SourceRange(StartLoc, EndLoc));
-}
-
-bool Parser::expectIdentifier() {
-  if (Tok.is(tok::identifier))
-    return false;
-  if (const auto *II = Tok.getIdentifierInfo()) {
-    if (II->isCPlusPlusKeyword(getLangOpts())) {
-      Diag(Tok, diag::err_expected_token_instead_of_objcxx_keyword)
-          << tok::identifier << Tok.getIdentifierInfo();
-      // Objective-C++: Recover by treating this keyword as a valid identifier.
-      return false;
-    }
-  }
-  Diag(Tok, diag::err_expected) << tok::identifier;
-  return true;
-}
-
-//===----------------------------------------------------------------------===//
-// Error recovery.
-//===----------------------------------------------------------------------===//
-
-static bool HasFlagsSet(Parser::SkipUntilFlags L, Parser::SkipUntilFlags R) {
-  return (static_cast<unsigned>(L) & static_cast<unsigned>(R)) != 0;
-}
-
-/// SkipUntil - Read tokens until we get to the specified token, then consume
-/// it (unless no flag StopBeforeMatch).  Because we cannot guarantee that the
-/// token will ever occur, this skips to the next token, or to some likely
-/// good stopping point.  If StopAtSemi is true, skipping will stop at a ';'
-/// character.
-///
-/// If SkipUntil finds the specified token, it returns true, otherwise it
-/// returns false.
-bool Parser::SkipUntil(ArrayRef<tok::TokenKind> Toks, SkipUntilFlags Flags) {
-  // We always want this function to skip at least one token if the first token
-  // isn't T and if not at EOF.
-  bool isFirstTokenSkipped = true;
-  while (1) {
-    // If we found one of the tokens, stop and return true.
-    for (unsigned i = 0, NumToks = Toks.size(); i != NumToks; ++i) {
-      if (Tok.is(Toks[i])) {
-        if (HasFlagsSet(Flags, StopBeforeMatch)) {
-          // Noop, don't consume the token.
-        } else {
-          ConsumeAnyToken();
-        }
-        return true;
-      }
-    }
-
-    // Important special case: The caller has given up and just wants us to
-    // skip the rest of the file. Do this without recursing, since we can
-    // get here precisely because the caller detected too much recursion.
-    if (Toks.size() == 1 && Toks[0] == tok::eof &&
-        !HasFlagsSet(Flags, StopAtSemi) &&
-        !HasFlagsSet(Flags, StopAtCodeCompletion)) {
-      while (Tok.isNot(tok::eof))
-        ConsumeAnyToken();
-      return true;
-    }
-
-    switch (Tok.getKind()) {
-    case tok::eof:
-      // Ran out of tokens.
-      return false;
-
-    case tok::annot_pragma_openmp:
-    case tok::annot_pragma_openmp_end:
-      // Stop before an OpenMP pragma boundary.
-    case tok::annot_module_begin:
-    case tok::annot_module_end:
-    case tok::annot_module_include:
-      // Stop before we change submodules. They generally indicate a "good"
-      // place to pick up parsing again (except in the special case where
-      // we're trying to skip to EOF).
-      return false;
-
-    case tok::code_completion:
-      if (!HasFlagsSet(Flags, StopAtCodeCompletion))
-        handleUnexpectedCodeCompletionToken();
-      return false;
-
-    case tok::l_paren:
-      // Recursively skip properly-nested parens.
-      ConsumeParen();
-      if (HasFlagsSet(Flags, StopAtCodeCompletion))
-        SkipUntil(tok::r_paren, StopAtCodeCompletion);
-      else
-        SkipUntil(tok::r_paren);
-      break;
-    case tok::l_square:
-      // Recursively skip properly-nested square brackets.
-      ConsumeBracket();
-      if (HasFlagsSet(Flags, StopAtCodeCompletion))
-        SkipUntil(tok::r_square, StopAtCodeCompletion);
-      else
-        SkipUntil(tok::r_square);
-      break;
-    case tok::l_brace:
-      // Recursively skip properly-nested braces.
-      ConsumeBrace();
-      if (HasFlagsSet(Flags, StopAtCodeCompletion))
-        SkipUntil(tok::r_brace, StopAtCodeCompletion);
-      else
-        SkipUntil(tok::r_brace);
-      break;
-
-    // Okay, we found a ']' or '}' or ')', which we think should be balanced.
-    // Since the user wasn't looking for this token (if they were, it would
-    // already be handled), this isn't balanced.  If there is a LHS token at a
-    // higher level, we will assume that this matches the unbalanced token
-    // and return it.  Otherwise, this is a spurious RHS token, which we skip.
-    case tok::r_paren:
-      if (ParenCount && !isFirstTokenSkipped)
-        return false;  // Matches something.
-      ConsumeParen();
-      break;
-    case tok::r_square:
-      if (BracketCount && !isFirstTokenSkipped)
-        return false;  // Matches something.
-      ConsumeBracket();
-      break;
-    case tok::r_brace:
-      if (BraceCount && !isFirstTokenSkipped)
-        return false;  // Matches something.
-      ConsumeBrace();
-      break;
-
-    case tok::semi:
-      if (HasFlagsSet(Flags, StopAtSemi))
-        return false;
-      LLVM_FALLTHROUGH;
-    default:
-      // Skip this token.
-      ConsumeAnyToken();
-      break;
-    }
-    isFirstTokenSkipped = false;
-  }
-}
-
-//===----------------------------------------------------------------------===//
-// Scope manipulation
-//===----------------------------------------------------------------------===//
-
-/// EnterScope - Start a new scope.
-void Parser::EnterScope(unsigned ScopeFlags) {
-  if (NumCachedScopes) {
-    Scope *N = ScopeCache[--NumCachedScopes];
-    N->Init(getCurScope(), ScopeFlags);
-    Actions.CurScope = N;
-  } else {
-    Actions.CurScope = new Scope(getCurScope(), ScopeFlags, Diags);
-  }
-}
-
-/// ExitScope - Pop a scope off the scope stack.
-void Parser::ExitScope() {
-  assert(getCurScope() && "Scope imbalance!");
-
-  // Inform the actions module that this scope is going away if there are any
-  // decls in it.
-  Actions.ActOnPopScope(Tok.getLocation(), getCurScope());
-
-  Scope *OldScope = getCurScope();
-  Actions.CurScope = OldScope->getParent();
-
-  if (NumCachedScopes == ScopeCacheSize)
-    delete OldScope;
-  else
-    ScopeCache[NumCachedScopes++] = OldScope;
-}
-
-/// Set the flags for the current scope to ScopeFlags. If ManageFlags is false,
-/// this object does nothing.
-Parser::ParseScopeFlags::ParseScopeFlags(Parser *Self, unsigned ScopeFlags,
-                                 bool ManageFlags)
-  : CurScope(ManageFlags ? Self->getCurScope() : nullptr) {
-  if (CurScope) {
-    OldFlags = CurScope->getFlags();
-    CurScope->setFlags(ScopeFlags);
-  }
-}
-
-/// Restore the flags for the current scope to what they were before this
-/// object overrode them.
-Parser::ParseScopeFlags::~ParseScopeFlags() {
-  if (CurScope)
-    CurScope->setFlags(OldFlags);
-}
-
-
-//===----------------------------------------------------------------------===//
-// C99 6.9: External Definitions.
-//===----------------------------------------------------------------------===//
-
-Parser::~Parser() {
-  // If we still have scopes active, delete the scope tree.
-  delete getCurScope();
-  Actions.CurScope = nullptr;
-
-  // Free the scope cache.
-  for (unsigned i = 0, e = NumCachedScopes; i != e; ++i)
-    delete ScopeCache[i];
-
-  resetPragmaHandlers();
-
-  PP.removeCommentHandler(CommentSemaHandler.get());
-
-  PP.clearCodeCompletionHandler();
-
-  if (getLangOpts().DelayedTemplateParsing &&
-      !PP.isIncrementalProcessingEnabled() && !TemplateIds.empty()) {
-    // If an ASTConsumer parsed delay-parsed templates in their
-    // HandleTranslationUnit() method, TemplateIds created there were not
-    // guarded by a DestroyTemplateIdAnnotationsRAIIObj object in
-    // ParseTopLevelDecl(). Destroy them here.
-    DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(TemplateIds);
-  }
-
-  assert(TemplateIds.empty() && "Still alive TemplateIdAnnotations around?");
-}
-
-/// Initialize - Warm up the parser.
-///
-void Parser::Initialize() {
-  // Create the translation unit scope.  Install it as the current scope.
-  assert(getCurScope() == nullptr && "A scope is already active?");
-  EnterScope(Scope::DeclScope);
-  Actions.ActOnTranslationUnitScope(getCurScope());
-
-  // Initialization for Objective-C context sensitive keywords recognition.
-  // Referenced in Parser::ParseObjCTypeQualifierList.
-  if (getLangOpts().ObjC) {
-    ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in");
-    ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out");
-    ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout");
-    ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway");
-    ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy");
-    ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref");
-    ObjCTypeQuals[objc_nonnull] = &PP.getIdentifierTable().get("nonnull");
-    ObjCTypeQuals[objc_nullable] = &PP.getIdentifierTable().get("nullable");
-    ObjCTypeQuals[objc_null_unspecified]
-      = &PP.getIdentifierTable().get("null_unspecified");
-  }
-
-  Ident_instancetype = nullptr;
-  Ident_final = nullptr;
-  Ident_sealed = nullptr;
-  Ident_override = nullptr;
-  Ident_GNU_final = nullptr;
-
-  Ident_super = &PP.getIdentifierTable().get("super");
-
-  Ident_vector = nullptr;
-  Ident_bool = nullptr;
-  Ident_pixel = nullptr;
-  if (getLangOpts().AltiVec || getLangOpts().ZVector) {
-    Ident_vector = &PP.getIdentifierTable().get("vector");
-    Ident_bool = &PP.getIdentifierTable().get("bool");
-  }
-  if (getLangOpts().AltiVec)
-    Ident_pixel = &PP.getIdentifierTable().get("pixel");
-
-  Ident_introduced = nullptr;
-  Ident_deprecated = nullptr;
-  Ident_obsoleted = nullptr;
-  Ident_unavailable = nullptr;
-  Ident_strict = nullptr;
-  Ident_replacement = nullptr;
-
-  Ident_language = Ident_defined_in = Ident_generated_declaration = nullptr;
-
-  Ident__except = nullptr;
-
-  Ident__exception_code = Ident__exception_info = nullptr;
-  Ident__abnormal_termination = Ident___exception_code = nullptr;
-  Ident___exception_info = Ident___abnormal_termination = nullptr;
-  Ident_GetExceptionCode = Ident_GetExceptionInfo = nullptr;
-  Ident_AbnormalTermination = nullptr;
-
-  if(getLangOpts().Borland) {
-    Ident__exception_info        = PP.getIdentifierInfo("_exception_info");
-    Ident___exception_info       = PP.getIdentifierInfo("__exception_info");
-    Ident_GetExceptionInfo       = PP.getIdentifierInfo("GetExceptionInformation");
-    Ident__exception_code        = PP.getIdentifierInfo("_exception_code");
-    Ident___exception_code       = PP.getIdentifierInfo("__exception_code");
-    Ident_GetExceptionCode       = PP.getIdentifierInfo("GetExceptionCode");
-    Ident__abnormal_termination  = PP.getIdentifierInfo("_abnormal_termination");
-    Ident___abnormal_termination = PP.getIdentifierInfo("__abnormal_termination");
-    Ident_AbnormalTermination    = PP.getIdentifierInfo("AbnormalTermination");
-
-    PP.SetPoisonReason(Ident__exception_code,diag::err_seh___except_block);
-    PP.SetPoisonReason(Ident___exception_code,diag::err_seh___except_block);
-    PP.SetPoisonReason(Ident_GetExceptionCode,diag::err_seh___except_block);
-    PP.SetPoisonReason(Ident__exception_info,diag::err_seh___except_filter);
-    PP.SetPoisonReason(Ident___exception_info,diag::err_seh___except_filter);
-    PP.SetPoisonReason(Ident_GetExceptionInfo,diag::err_seh___except_filter);
-    PP.SetPoisonReason(Ident__abnormal_termination,diag::err_seh___finally_block);
-    PP.SetPoisonReason(Ident___abnormal_termination,diag::err_seh___finally_block);
-    PP.SetPoisonReason(Ident_AbnormalTermination,diag::err_seh___finally_block);
-  }
-
-  Actions.Initialize();
-
-  // Prime the lexer look-ahead.
-  ConsumeToken();
-}
-
-void Parser::LateTemplateParserCleanupCallback(void *P) {
-  // While this RAII helper doesn't bracket any actual work, the destructor will
-  // clean up annotations that were created during ActOnEndOfTranslationUnit
-  // when incremental processing is enabled.
-  DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(((Parser *)P)->TemplateIds);
-}
-
-bool Parser::ParseFirstTopLevelDecl(DeclGroupPtrTy &Result) {
-  Actions.ActOnStartOfTranslationUnit();
-
-  // C11 6.9p1 says translation units must have at least one top-level
-  // declaration. C++ doesn't have this restriction. We also don't want to
-  // complain if we have a precompiled header, although technically if the PCH
-  // is empty we should still emit the (pedantic) diagnostic.
-  bool NoTopLevelDecls = ParseTopLevelDecl(Result);
-  if (NoTopLevelDecls && !Actions.getASTContext().getExternalSource() &&
-      !getLangOpts().CPlusPlus)
-    Diag(diag::ext_empty_translation_unit);
-
-  return NoTopLevelDecls;
-}
-
-/// ParseTopLevelDecl - Parse one top-level declaration, return whatever the
-/// action tells us to.  This returns true if the EOF was encountered.
-bool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) {
-  DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(TemplateIds);
-
-  // Skip over the EOF token, flagging end of previous input for incremental
-  // processing
-  if (PP.isIncrementalProcessingEnabled() && Tok.is(tok::eof))
-    ConsumeToken();
-
-  Result = nullptr;
-  switch (Tok.getKind()) {
-  case tok::annot_pragma_unused:
-    HandlePragmaUnused();
-    return false;
-
-  case tok::kw_export:
-    if (NextToken().isNot(tok::kw_module))
-      break;
-    LLVM_FALLTHROUGH;
-  case tok::kw_module:
-    Result = ParseModuleDecl();
-    return false;
-
-  case tok::annot_module_include:
-    Actions.ActOnModuleInclude(Tok.getLocation(),
-                               reinterpret_cast<Module *>(
-                                   Tok.getAnnotationValue()));
-    ConsumeAnnotationToken();
-    return false;
-
-  case tok::annot_module_begin:
-    Actions.ActOnModuleBegin(Tok.getLocation(), reinterpret_cast<Module *>(
-                                                    Tok.getAnnotationValue()));
-    ConsumeAnnotationToken();
-    return false;
-
-  case tok::annot_module_end:
-    Actions.ActOnModuleEnd(Tok.getLocation(), reinterpret_cast<Module *>(
-                                                  Tok.getAnnotationValue()));
-    ConsumeAnnotationToken();
-    return false;
-
-  case tok::annot_pragma_attribute:
-    HandlePragmaAttribute();
-    return false;
-
-  case tok::eof:
-    // Late template parsing can begin.
-    if (getLangOpts().DelayedTemplateParsing)
-      Actions.SetLateTemplateParser(LateTemplateParserCallback,
-                                    PP.isIncrementalProcessingEnabled() ?
-                                    LateTemplateParserCleanupCallback : nullptr,
-                                    this);
-    if (!PP.isIncrementalProcessingEnabled())
-      Actions.ActOnEndOfTranslationUnit();
-    //else don't tell Sema that we ended parsing: more input might come.
-    return true;
-
-  default:
-    break;
-  }
-
-  ParsedAttributesWithRange attrs(AttrFactory);
-  MaybeParseCXX11Attributes(attrs);
-
-  Result = ParseExternalDeclaration(attrs);
-  return false;
-}
-
-/// ParseExternalDeclaration:
-///
-///       external-declaration: [C99 6.9], declaration: [C++ dcl.dcl]
-///         function-definition
-///         declaration
-/// [GNU]   asm-definition
-/// [GNU]   __extension__ external-declaration
-/// [OBJC]  objc-class-definition
-/// [OBJC]  objc-class-declaration
-/// [OBJC]  objc-alias-declaration
-/// [OBJC]  objc-protocol-definition
-/// [OBJC]  objc-method-definition
-/// [OBJC]  @end
-/// [C++]   linkage-specification
-/// [GNU] asm-definition:
-///         simple-asm-expr ';'
-/// [C++11] empty-declaration
-/// [C++11] attribute-declaration
-///
-/// [C++11] empty-declaration:
-///           ';'
-///
-/// [C++0x/GNU] 'extern' 'template' declaration
-///
-/// [Modules-TS] module-import-declaration
-///
-Parser::DeclGroupPtrTy
-Parser::ParseExternalDeclaration(ParsedAttributesWithRange &attrs,
-                                 ParsingDeclSpec *DS) {
-  DestroyTemplateIdAnnotationsRAIIObj CleanupRAII(TemplateIds);
-  ParenBraceBracketBalancer BalancerRAIIObj(*this);
-
-  if (PP.isCodeCompletionReached()) {
-    cutOffParsing();
-    return nullptr;
-  }
-
-  Decl *SingleDecl = nullptr;
-  switch (Tok.getKind()) {
-  case tok::annot_pragma_vis:
-    HandlePragmaVisibility();
-    return nullptr;
-  case tok::annot_pragma_pack:
-    HandlePragmaPack();
-    return nullptr;
-  case tok::annot_pragma_msstruct:
-    HandlePragmaMSStruct();
-    return nullptr;
-  case tok::annot_pragma_align:
-    HandlePragmaAlign();
-    return nullptr;
-  case tok::annot_pragma_weak:
-    HandlePragmaWeak();
-    return nullptr;
-  case tok::annot_pragma_weakalias:
-    HandlePragmaWeakAlias();
-    return nullptr;
-  case tok::annot_pragma_redefine_extname:
-    HandlePragmaRedefineExtname();
-    return nullptr;
-  case tok::annot_pragma_fp_contract:
-    HandlePragmaFPContract();
-    return nullptr;
-  case tok::annot_pragma_fenv_access:
-    HandlePragmaFEnvAccess();
-    return nullptr;
-  case tok::annot_pragma_fp:
-    HandlePragmaFP();
-    break;
-  case tok::annot_pragma_opencl_extension:
-    HandlePragmaOpenCLExtension();
-    return nullptr;
-  case tok::annot_pragma_openmp: {
-    AccessSpecifier AS = AS_none;
-    return ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, attrs);
-  }
-  case tok::annot_pragma_ms_pointers_to_members:
-    HandlePragmaMSPointersToMembers();
-    return nullptr;
-  case tok::annot_pragma_ms_vtordisp:
-    HandlePragmaMSVtorDisp();
-    return nullptr;
-  case tok::annot_pragma_ms_pragma:
-    HandlePragmaMSPragma();
-    return nullptr;
-  case tok::annot_pragma_dump:
-    HandlePragmaDump();
-    return nullptr;
-  case tok::semi:
-    // Either a C++11 empty-declaration or attribute-declaration.
-    SingleDecl =
-        Actions.ActOnEmptyDeclaration(getCurScope(), attrs, Tok.getLocation());
-    ConsumeExtraSemi(OutsideFunction);
-    break;
-  case tok::r_brace:
-    Diag(Tok, diag::err_extraneous_closing_brace);
-    ConsumeBrace();
-    return nullptr;
-  case tok::eof:
-    Diag(Tok, diag::err_expected_external_declaration);
-    return nullptr;
-  case tok::kw___extension__: {
-    // __extension__ silences extension warnings in the subexpression.
-    ExtensionRAIIObject O(Diags);  // Use RAII to do this.
-    ConsumeToken();
-    return ParseExternalDeclaration(attrs);
-  }
-  case tok::kw_asm: {
-    ProhibitAttributes(attrs);
-
-    SourceLocation StartLoc = Tok.getLocation();
-    SourceLocation EndLoc;
-
-    ExprResult Result(ParseSimpleAsm(&EndLoc));
-
-    // Check if GNU-style InlineAsm is disabled.
-    // Empty asm string is allowed because it will not introduce
-    // any assembly code.
-    if (!(getLangOpts().GNUAsm || Result.isInvalid())) {
-      const auto *SL = cast<StringLiteral>(Result.get());
-      if (!SL->getString().trim().empty())
-        Diag(StartLoc, diag::err_gnu_inline_asm_disabled);
-    }
-
-    ExpectAndConsume(tok::semi, diag::err_expected_after,
-                     "top-level asm block");
-
-    if (Result.isInvalid())
-      return nullptr;
-    SingleDecl = Actions.ActOnFileScopeAsmDecl(Result.get(), StartLoc, EndLoc);
-    break;
-  }
-  case tok::at:
-    return ParseObjCAtDirectives(attrs);
-  case tok::minus:
-  case tok::plus:
-    if (!getLangOpts().ObjC) {
-      Diag(Tok, diag::err_expected_external_declaration);
-      ConsumeToken();
-      return nullptr;
-    }
-    SingleDecl = ParseObjCMethodDefinition();
-    break;
-  case tok::code_completion:
-    if (CurParsedObjCImpl) {
-      // Code-complete Objective-C methods even without leading '-'/'+' prefix.
-      Actions.CodeCompleteObjCMethodDecl(getCurScope(),
-                                         /*IsInstanceMethod=*/None,
-                                         /*ReturnType=*/nullptr);
-    }
-    Actions.CodeCompleteOrdinaryName(
-        getCurScope(),
-        CurParsedObjCImpl ? Sema::PCC_ObjCImplementation : Sema::PCC_Namespace);
-    cutOffParsing();
-    return nullptr;
-  case tok::kw_import:
-    SingleDecl = ParseModuleImport(SourceLocation());
-    break;
-  case tok::kw_export:
-    if (getLangOpts().ModulesTS) {
-      SingleDecl = ParseExportDeclaration();
-      break;
-    }
-    // This must be 'export template'. Parse it so we can diagnose our lack
-    // of support.
-    LLVM_FALLTHROUGH;
-  case tok::kw_using:
-  case tok::kw_namespace:
-  case tok::kw_typedef:
-  case tok::kw_template:
-  case tok::kw_static_assert:
-  case tok::kw__Static_assert:
-    // A function definition cannot start with any of these keywords.
-    {
-      SourceLocation DeclEnd;
-      return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
-    }
-
-  case tok::kw_static:
-    // Parse (then ignore) 'static' prior to a template instantiation. This is
-    // a GCC extension that we intentionally do not support.
-    if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_template)) {
-      Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
-        << 0;
-      SourceLocation DeclEnd;
-      return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
-    }
-    goto dont_know;
-
-  case tok::kw_inline:
-    if (getLangOpts().CPlusPlus) {
-      tok::TokenKind NextKind = NextToken().getKind();
-
-      // Inline namespaces. Allowed as an extension even in C++03.
-      if (NextKind == tok::kw_namespace) {
-        SourceLocation DeclEnd;
-        return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
-      }
-
-      // Parse (then ignore) 'inline' prior to a template instantiation. This is
-      // a GCC extension that we intentionally do not support.
-      if (NextKind == tok::kw_template) {
-        Diag(ConsumeToken(), diag::warn_static_inline_explicit_inst_ignored)
-          << 1;
-        SourceLocation DeclEnd;
-        return ParseDeclaration(DeclaratorContext::FileContext, DeclEnd, attrs);
-      }
-    }
-    goto dont_know;
-
-  case tok::kw_extern:
-    if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_template)) {
-      // Extern templates
-      SourceLocation ExternLoc = ConsumeToken();
-      SourceLocation TemplateLoc = ConsumeToken();
-      Diag(ExternLoc, getLangOpts().CPlusPlus11 ?
-             diag::warn_cxx98_compat_extern_template :
-             diag::ext_extern_template) << SourceRange(ExternLoc, TemplateLoc);
-      SourceLocation DeclEnd;
-      return Actions.ConvertDeclToDeclGroup(
-          ParseExplicitInstantiation(DeclaratorContext::FileContext, ExternLoc,
-                                     TemplateLoc, DeclEnd, attrs));
-    }
-    goto dont_know;
-
-  case tok::kw___if_exists:
-  case tok::kw___if_not_exists:
-    ParseMicrosoftIfExistsExternalDeclaration();
-    return nullptr;
-
-  case tok::kw_module:
-    Diag(Tok, diag::err_unexpected_module_decl);
-    SkipUntil(tok::semi);
-    return nullptr;
-
-  default:
-  dont_know:
-    if (Tok.isEditorPlaceholder()) {
-      ConsumeToken();
-      return nullptr;
-    }
-    // We can't tell whether this is a function-definition or declaration yet.
-    return ParseDeclarationOrFunctionDefinition(attrs, DS);
-  }
-
-  // This routine returns a DeclGroup, if the thing we parsed only contains a
-  // single decl, convert it now.
-  return Actions.ConvertDeclToDeclGroup(SingleDecl);
-}
-
-/// Determine whether the current token, if it occurs after a
-/// declarator, continues a declaration or declaration list.
-bool Parser::isDeclarationAfterDeclarator() {
-  // Check for '= delete' or '= default'
-  if (getLangOpts().CPlusPlus && Tok.is(tok::equal)) {
-    const Token &KW = NextToken();
-    if (KW.is(tok::kw_default) || KW.is(tok::kw_delete))
-      return false;
-  }
-
-  return Tok.is(tok::equal) ||      // int X()=  -> not a function def
-    Tok.is(tok::comma) ||           // int X(),  -> not a function def
-    Tok.is(tok::semi)  ||           // int X();  -> not a function def
-    Tok.is(tok::kw_asm) ||          // int X() __asm__ -> not a function def
-    Tok.is(tok::kw___attribute) ||  // int X() __attr__ -> not a function def
-    (getLangOpts().CPlusPlus &&
-     Tok.is(tok::l_paren));         // int X(0) -> not a function def [C++]
-}
-
-/// Determine whether the current token, if it occurs after a
-/// declarator, indicates the start of a function definition.
-bool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) {
-  assert(Declarator.isFunctionDeclarator() && "Isn't a function declarator");
-  if (Tok.is(tok::l_brace))   // int X() {}
-    return true;
-
-  // Handle K&R C argument lists: int X(f) int f; {}
-  if (!getLangOpts().CPlusPlus &&
-      Declarator.getFunctionTypeInfo().isKNRPrototype())
-    return isDeclarationSpecifier();
-
-  if (getLangOpts().CPlusPlus && Tok.is(tok::equal)) {
-    const Token &KW = NextToken();
-    return KW.is(tok::kw_default) || KW.is(tok::kw_delete);
-  }
-
-  return Tok.is(tok::colon) ||         // X() : Base() {} (used for ctors)
-         Tok.is(tok::kw_try);          // X() try { ... }
-}
-
-/// Parse either a function-definition or a declaration.  We can't tell which
-/// we have until we read up to the compound-statement in function-definition.
-/// TemplateParams, if non-NULL, provides the template parameters when we're
-/// parsing a C++ template-declaration.
-///
-///       function-definition: [C99 6.9.1]
-///         decl-specs      declarator declaration-list[opt] compound-statement
-/// [C90] function-definition: [C99 6.7.1] - implicit int result
-/// [C90]   decl-specs[opt] declarator declaration-list[opt] compound-statement
-///
-///       declaration: [C99 6.7]
-///         declaration-specifiers init-declarator-list[opt] ';'
-/// [!C99]  init-declarator-list ';'                   [TODO: warn in c99 mode]
-/// [OMP]   threadprivate-directive                              [TODO]
-///
-Parser::DeclGroupPtrTy
-Parser::ParseDeclOrFunctionDefInternal(ParsedAttributesWithRange &attrs,
-                                       ParsingDeclSpec &DS,
-                                       AccessSpecifier AS) {
-  MaybeParseMicrosoftAttributes(DS.getAttributes());
-  // Parse the common declaration-specifiers piece.
-  ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS,
-                             DeclSpecContext::DSC_top_level);
-
-  // If we had a free-standing type definition with a missing semicolon, we
-  // may get this far before the problem becomes obvious.
-  if (DS.hasTagDefinition() && DiagnoseMissingSemiAfterTagDefinition(
-                                   DS, AS, DeclSpecContext::DSC_top_level))
-    return nullptr;
-
-  // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };"
-  // declaration-specifiers init-declarator-list[opt] ';'
-  if (Tok.is(tok::semi)) {
-    auto LengthOfTSTToken = [](DeclSpec::TST TKind) {
-      assert(DeclSpec::isDeclRep(TKind));
-      switch(TKind) {
-      case DeclSpec::TST_class:
-        return 5;
-      case DeclSpec::TST_struct:
-        return 6;
-      case DeclSpec::TST_union:
-        return 5;
-      case DeclSpec::TST_enum:
-        return 4;
-      case DeclSpec::TST_interface:
-        return 9;
-      default:
-        llvm_unreachable("we only expect to get the length of the class/struct/union/enum");
-      }
-
-    };
-    // Suggest correct location to fix '[[attrib]] struct' to 'struct [[attrib]]'
-    SourceLocation CorrectLocationForAttributes =
-        DeclSpec::isDeclRep(DS.getTypeSpecType())
-            ? DS.getTypeSpecTypeLoc().getLocWithOffset(
-                  LengthOfTSTToken(DS.getTypeSpecType()))
-            : SourceLocation();
-    ProhibitAttributes(attrs, CorrectLocationForAttributes);
-    ConsumeToken();
-    RecordDecl *AnonRecord = nullptr;
-    Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
-                                                       DS, AnonRecord);
-    DS.complete(TheDecl);
-    if (getLangOpts().OpenCL)
-      Actions.setCurrentOpenCLExtensionForDecl(TheDecl);
-    if (AnonRecord) {
-      Decl* decls[] = {AnonRecord, TheDecl};
-      return Actions.BuildDeclaratorGroup(decls);
-    }
-    return Actions.ConvertDeclToDeclGroup(TheDecl);
-  }
-
-  DS.takeAttributesFrom(attrs);
-
-  // ObjC2 allows prefix attributes on class interfaces and protocols.
-  // FIXME: This still needs better diagnostics. We should only accept
-  // attributes here, no types, etc.
-  if (getLangOpts().ObjC && Tok.is(tok::at)) {
-    SourceLocation AtLoc = ConsumeToken(); // the "@"
-    if (!Tok.isObjCAtKeyword(tok::objc_interface) &&
-        !Tok.isObjCAtKeyword(tok::objc_protocol)) {
-      Diag(Tok, diag::err_objc_unexpected_attr);
-      SkipUntil(tok::semi); // FIXME: better skip?
-      return nullptr;
-    }
-
-    DS.abort();
-
-    const char *PrevSpec = nullptr;
-    unsigned DiagID;
-    if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID,
-                           Actions.getASTContext().getPrintingPolicy()))
-      Diag(AtLoc, DiagID) << PrevSpec;
-
-    if (Tok.isObjCAtKeyword(tok::objc_protocol))
-      return ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes());
-
-    return Actions.ConvertDeclToDeclGroup(
-            ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()));
-  }
-
-  // If the declspec consisted only of 'extern' and we have a string
-  // literal following it, this must be a C++ linkage specifier like
-  // 'extern "C"'.
-  if (getLangOpts().CPlusPlus && isTokenStringLiteral() &&
-      DS.getStorageClassSpec() == DeclSpec::SCS_extern &&
-      DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) {
-    Decl *TheDecl = ParseLinkage(DS, DeclaratorContext::FileContext);
-    return Actions.ConvertDeclToDeclGroup(TheDecl);
-  }
-
-  return ParseDeclGroup(DS, DeclaratorContext::FileContext);
-}
-
-Parser::DeclGroupPtrTy
-Parser::ParseDeclarationOrFunctionDefinition(ParsedAttributesWithRange &attrs,
-                                             ParsingDeclSpec *DS,
-                                             AccessSpecifier AS) {
-  if (DS) {
-    return ParseDeclOrFunctionDefInternal(attrs, *DS, AS);
-  } else {
-    ParsingDeclSpec PDS(*this);
-    // Must temporarily exit the objective-c container scope for
-    // parsing c constructs and re-enter objc container scope
-    // afterwards.
-    ObjCDeclContextSwitch ObjCDC(*this);
-
-    return ParseDeclOrFunctionDefInternal(attrs, PDS, AS);
-  }
-}
-
-/// ParseFunctionDefinition - We parsed and verified that the specified
-/// Declarator is well formed.  If this is a K&R-style function, read the
-/// parameters declaration-list, then start the compound-statement.
-///
-///       function-definition: [C99 6.9.1]
-///         decl-specs      declarator declaration-list[opt] compound-statement
-/// [C90] function-definition: [C99 6.7.1] - implicit int result
-/// [C90]   decl-specs[opt] declarator declaration-list[opt] compound-statement
-/// [C++] function-definition: [C++ 8.4]
-///         decl-specifier-seq[opt] declarator ctor-initializer[opt]
-///         function-body
-/// [C++] function-definition: [C++ 8.4]
-///         decl-specifier-seq[opt] declarator function-try-block
-///
-Decl *Parser::ParseFunctionDefinition(ParsingDeclarator &D,
-                                      const ParsedTemplateInfo &TemplateInfo,
-                                      LateParsedAttrList *LateParsedAttrs) {
-  // Poison SEH identifiers so they are flagged as illegal in function bodies.
-  PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true);
-  const DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo();
-
-  // If this is C90 and the declspecs were completely missing, fudge in an
-  // implicit int.  We do this here because this is the only place where
-  // declaration-specifiers are completely optional in the grammar.
-  if (getLangOpts().ImplicitInt && D.getDeclSpec().isEmpty()) {
-    const char *PrevSpec;
-    unsigned DiagID;
-    const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
-    D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int,
-                                           D.getIdentifierLoc(),
-                                           PrevSpec, DiagID,
-                                           Policy);
-    D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin());
-  }
-
-  // If this declaration was formed with a K&R-style identifier list for the
-  // arguments, parse declarations for all of the args next.
-  // int foo(a,b) int a; float b; {}
-  if (FTI.isKNRPrototype())
-    ParseKNRParamDeclarations(D);
-
-  // We should have either an opening brace or, in a C++ constructor,
-  // we may have a colon.
-  if (Tok.isNot(tok::l_brace) &&
-      (!getLangOpts().CPlusPlus ||
-       (Tok.isNot(tok::colon) && Tok.isNot(tok::kw_try) &&
-        Tok.isNot(tok::equal)))) {
-    Diag(Tok, diag::err_expected_fn_body);
-
-    // Skip over garbage, until we get to '{'.  Don't eat the '{'.
-    SkipUntil(tok::l_brace, StopAtSemi | StopBeforeMatch);
-
-    // If we didn't find the '{', bail out.
-    if (Tok.isNot(tok::l_brace))
-      return nullptr;
-  }
-
-  // Check to make sure that any normal attributes are allowed to be on
-  // a definition.  Late parsed attributes are checked at the end.
-  if (Tok.isNot(tok::equal)) {
-    for (const ParsedAttr &AL : D.getAttributes())
-      if (AL.isKnownToGCC() && !AL.isCXX11Attribute())
-        Diag(AL.getLoc(), diag::warn_attribute_on_function_definition)
-            << AL.getName();
-  }
-
-  // In delayed template parsing mode, for function template we consume the
-  // tokens and store them for late parsing at the end of the translation unit.
-  if (getLangOpts().DelayedTemplateParsing && Tok.isNot(tok::equal) &&
-      TemplateInfo.Kind == ParsedTemplateInfo::Template &&
-      Actions.canDelayFunctionBody(D)) {
-    MultiTemplateParamsArg TemplateParameterLists(*TemplateInfo.TemplateParams);
-
-    ParseScope BodyScope(this, Scope::FnScope | Scope::DeclScope |
-                                   Scope::CompoundStmtScope);
-    Scope *ParentScope = getCurScope()->getParent();
-
-    D.setFunctionDefinitionKind(FDK_Definition);
-    Decl *DP = Actions.HandleDeclarator(ParentScope, D,
-                                        TemplateParameterLists);
-    D.complete(DP);
-    D.getMutableDeclSpec().abort();
-
-    if (SkipFunctionBodies && (!DP || Actions.canSkipFunctionBody(DP)) &&
-        trySkippingFunctionBody()) {
-      BodyScope.Exit();
-      return Actions.ActOnSkippedFunctionBody(DP);
-    }
-
-    CachedTokens Toks;
-    LexTemplateFunctionForLateParsing(Toks);
-
-    if (DP) {
-      FunctionDecl *FnD = DP->getAsFunction();
-      Actions.CheckForFunctionRedefinition(FnD);
-      Actions.MarkAsLateParsedTemplate(FnD, DP, Toks);
-    }
-    return DP;
-  }
-  else if (CurParsedObjCImpl &&
-           !TemplateInfo.TemplateParams &&
-           (Tok.is(tok::l_brace) || Tok.is(tok::kw_try) ||
-            Tok.is(tok::colon)) &&
-      Actions.CurContext->isTranslationUnit()) {
-    ParseScope BodyScope(this, Scope::FnScope | Scope::DeclScope |
-                                   Scope::CompoundStmtScope);
-    Scope *ParentScope = getCurScope()->getParent();
-
-    D.setFunctionDefinitionKind(FDK_Definition);
-    Decl *FuncDecl = Actions.HandleDeclarator(ParentScope, D,
-                                              MultiTemplateParamsArg());
-    D.complete(FuncDecl);
-    D.getMutableDeclSpec().abort();
-    if (FuncDecl) {
-      // Consume the tokens and store them for later parsing.
-      StashAwayMethodOrFunctionBodyTokens(FuncDecl);
-      CurParsedObjCImpl->HasCFunction = true;
-      return FuncDecl;
-    }
-    // FIXME: Should we really fall through here?
-  }
-
-  // Enter a scope for the function body.
-  ParseScope BodyScope(this, Scope::FnScope | Scope::DeclScope |
-                                 Scope::CompoundStmtScope);
-
-  // Tell the actions module that we have entered a function definition with the
-  // specified Declarator for the function.
-  Sema::SkipBodyInfo SkipBody;
-  Decl *Res = Actions.ActOnStartOfFunctionDef(getCurScope(), D,
-                                              TemplateInfo.TemplateParams
-                                                  ? *TemplateInfo.TemplateParams
-                                                  : MultiTemplateParamsArg(),
-                                              &SkipBody);
-
-  if (SkipBody.ShouldSkip) {
-    SkipFunctionBody();
-    return Res;
-  }
-
-  // Break out of the ParsingDeclarator context before we parse the body.
-  D.complete(Res);
-
-  // Break out of the ParsingDeclSpec context, too.  This const_cast is
-  // safe because we're always the sole owner.
-  D.getMutableDeclSpec().abort();
-
-  if (TryConsumeToken(tok::equal)) {
-    assert(getLangOpts().CPlusPlus && "Only C++ function definitions have '='");
-
-    bool Delete = false;
-    SourceLocation KWLoc;
-    if (TryConsumeToken(tok::kw_delete, KWLoc)) {
-      Diag(KWLoc, getLangOpts().CPlusPlus11
-                      ? diag::warn_cxx98_compat_defaulted_deleted_function
-                      : diag::ext_defaulted_deleted_function)
-        << 1 /* deleted */;
-      Actions.SetDeclDeleted(Res, KWLoc);
-      Delete = true;
-    } else if (TryConsumeToken(tok::kw_default, KWLoc)) {
-      Diag(KWLoc, getLangOpts().CPlusPlus11
-                      ? diag::warn_cxx98_compat_defaulted_deleted_function
-                      : diag::ext_defaulted_deleted_function)
-        << 0 /* defaulted */;
-      Actions.SetDeclDefaulted(Res, KWLoc);
-    } else {
-      llvm_unreachable("function definition after = not 'delete' or 'default'");
-    }
-
-    if (Tok.is(tok::comma)) {
-      Diag(KWLoc, diag::err_default_delete_in_multiple_declaration)
-        << Delete;
-      SkipUntil(tok::semi);
-    } else if (ExpectAndConsume(tok::semi, diag::err_expected_after,
-                                Delete ? "delete" : "default")) {
-      SkipUntil(tok::semi);
-    }
-
-    Stmt *GeneratedBody = Res ? Res->getBody() : nullptr;
-    Actions.ActOnFinishFunctionBody(Res, GeneratedBody, false);
-    return Res;
-  }
-
-  if (SkipFunctionBodies && (!Res || Actions.canSkipFunctionBody(Res)) &&
-      trySkippingFunctionBody()) {
-    BodyScope.Exit();
-    Actions.ActOnSkippedFunctionBody(Res);
-    return Actions.ActOnFinishFunctionBody(Res, nullptr, false);
-  }
-
-  if (Tok.is(tok::kw_try))
-    return ParseFunctionTryBlock(Res, BodyScope);
-
-  // If we have a colon, then we're probably parsing a C++
-  // ctor-initializer.
-  if (Tok.is(tok::colon)) {
-    ParseConstructorInitializer(Res);
-
-    // Recover from error.
-    if (!Tok.is(tok::l_brace)) {
-      BodyScope.Exit();
-      Actions.ActOnFinishFunctionBody(Res, nullptr);
-      return Res;
-    }
-  } else
-    Actions.ActOnDefaultCtorInitializers(Res);
-
-  // Late attributes are parsed in the same scope as the function body.
-  if (LateParsedAttrs)
-    ParseLexedAttributeList(*LateParsedAttrs, Res, false, true);
-
-  return ParseFunctionStatementBody(Res, BodyScope);
-}
-
-void Parser::SkipFunctionBody() {
-  if (Tok.is(tok::equal)) {
-    SkipUntil(tok::semi);
-    return;
-  }
-
-  bool IsFunctionTryBlock = Tok.is(tok::kw_try);
-  if (IsFunctionTryBlock)
-    ConsumeToken();
-
-  CachedTokens Skipped;
-  if (ConsumeAndStoreFunctionPrologue(Skipped))
-    SkipMalformedDecl();
-  else {
-    SkipUntil(tok::r_brace);
-    while (IsFunctionTryBlock && Tok.is(tok::kw_catch)) {
-      SkipUntil(tok::l_brace);
-      SkipUntil(tok::r_brace);
-    }
-  }
-}
-
-/// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides
-/// types for a function with a K&R-style identifier list for arguments.
-void Parser::ParseKNRParamDeclarations(Declarator &D) {
-  // We know that the top-level of this declarator is a function.
-  DeclaratorChunk::FunctionTypeInfo &FTI = D.getFunctionTypeInfo();
-
-  // Enter function-declaration scope, limiting any declarators to the
-  // function prototype scope, including parameter declarators.
-  ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope |
-                            Scope::FunctionDeclarationScope | Scope::DeclScope);
-
-  // Read all the argument declarations.
-  while (isDeclarationSpecifier()) {
-    SourceLocation DSStart = Tok.getLocation();
-
-    // Parse the common declaration-specifiers piece.
-    DeclSpec DS(AttrFactory);
-    ParseDeclarationSpecifiers(DS);
-
-    // C99 6.9.1p6: 'each declaration in the declaration list shall have at
-    // least one declarator'.
-    // NOTE: GCC just makes this an ext-warn.  It's not clear what it does with
-    // the declarations though.  It's trivial to ignore them, really hard to do
-    // anything else with them.
-    if (TryConsumeToken(tok::semi)) {
-      Diag(DSStart, diag::err_declaration_does_not_declare_param);
-      continue;
-    }
-
-    // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other
-    // than register.
-    if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified &&
-        DS.getStorageClassSpec() != DeclSpec::SCS_register) {
-      Diag(DS.getStorageClassSpecLoc(),
-           diag::err_invalid_storage_class_in_func_decl);
-      DS.ClearStorageClassSpecs();
-    }
-    if (DS.getThreadStorageClassSpec() != DeclSpec::TSCS_unspecified) {
-      Diag(DS.getThreadStorageClassSpecLoc(),
-           diag::err_invalid_storage_class_in_func_decl);
-      DS.ClearStorageClassSpecs();
-    }
-
-    // Parse the first declarator attached to this declspec.
-    Declarator ParmDeclarator(DS, DeclaratorContext::KNRTypeListContext);
-    ParseDeclarator(ParmDeclarator);
-
-    // Handle the full declarator list.
-    while (1) {
-      // If attributes are present, parse them.
-      MaybeParseGNUAttributes(ParmDeclarator);
-
-      // Ask the actions module to compute the type for this declarator.
-      Decl *Param =
-        Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator);
-
-      if (Param &&
-          // A missing identifier has already been diagnosed.
-          ParmDeclarator.getIdentifier()) {
-
-        // Scan the argument list looking for the correct param to apply this
-        // type.
-        for (unsigned i = 0; ; ++i) {
-          // C99 6.9.1p6: those declarators shall declare only identifiers from
-          // the identifier list.
-          if (i == FTI.NumParams) {
-            Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param)
-              << ParmDeclarator.getIdentifier();
-            break;
-          }
-
-          if (FTI.Params[i].Ident == ParmDeclarator.getIdentifier()) {
-            // Reject redefinitions of parameters.
-            if (FTI.Params[i].Param) {
-              Diag(ParmDeclarator.getIdentifierLoc(),
-                   diag::err_param_redefinition)
-                 << ParmDeclarator.getIdentifier();
-            } else {
-              FTI.Params[i].Param = Param;
-            }
-            break;
-          }
-        }
-      }
-
-      // If we don't have a comma, it is either the end of the list (a ';') or
-      // an error, bail out.
-      if (Tok.isNot(tok::comma))
-        break;
-
-      ParmDeclarator.clear();
-
-      // Consume the comma.
-      ParmDeclarator.setCommaLoc(ConsumeToken());
-
-      // Parse the next declarator.
-      ParseDeclarator(ParmDeclarator);
-    }
-
-    // Consume ';' and continue parsing.
-    if (!ExpectAndConsumeSemi(diag::err_expected_semi_declaration))
-      continue;
-
-    // Otherwise recover by skipping to next semi or mandatory function body.
-    if (SkipUntil(tok::l_brace, StopAtSemi | StopBeforeMatch))
-      break;
-    TryConsumeToken(tok::semi);
-  }
-
-  // The actions module must verify that all arguments were declared.
-  Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation());
-}
-
-
-/// ParseAsmStringLiteral - This is just a normal string-literal, but is not
-/// allowed to be a wide string, and is not subject to character translation.
-///
-/// [GNU] asm-string-literal:
-///         string-literal
-///
-ExprResult Parser::ParseAsmStringLiteral() {
-  if (!isTokenStringLiteral()) {
-    Diag(Tok, diag::err_expected_string_literal)
-      << /*Source='in...'*/0 << "'asm'";
-    return ExprError();
-  }
-
-  ExprResult AsmString(ParseStringLiteralExpression());
-  if (!AsmString.isInvalid()) {
-    const auto *SL = cast<StringLiteral>(AsmString.get());
-    if (!SL->isAscii()) {
-      Diag(Tok, diag::err_asm_operand_wide_string_literal)
-        << SL->isWide()
-        << SL->getSourceRange();
-      return ExprError();
-    }
-  }
-  return AsmString;
-}
-
-/// ParseSimpleAsm
-///
-/// [GNU] simple-asm-expr:
-///         'asm' '(' asm-string-literal ')'
-///
-ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) {
-  assert(Tok.is(tok::kw_asm) && "Not an asm!");
-  SourceLocation Loc = ConsumeToken();
-
-  if (Tok.is(tok::kw_volatile)) {
-    // Remove from the end of 'asm' to the end of 'volatile'.
-    SourceRange RemovalRange(PP.getLocForEndOfToken(Loc),
-                             PP.getLocForEndOfToken(Tok.getLocation()));
-
-    Diag(Tok, diag::warn_file_asm_volatile)
-      << FixItHint::CreateRemoval(RemovalRange);
-    ConsumeToken();
-  }
-
-  BalancedDelimiterTracker T(*this, tok::l_paren);
-  if (T.consumeOpen()) {
-    Diag(Tok, diag::err_expected_lparen_after) << "asm";
-    return ExprError();
-  }
-
-  ExprResult Result(ParseAsmStringLiteral());
-
-  if (!Result.isInvalid()) {
-    // Close the paren and get the location of the end bracket
-    T.consumeClose();
-    if (EndLoc)
-      *EndLoc = T.getCloseLocation();
-  } else if (SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch)) {
-    if (EndLoc)
-      *EndLoc = Tok.getLocation();
-    ConsumeParen();
-  }
-
-  return Result;
-}
-
-/// Get the TemplateIdAnnotation from the token and put it in the
-/// cleanup pool so that it gets destroyed when parsing the current top level
-/// declaration is finished.
-TemplateIdAnnotation *Parser::takeTemplateIdAnnotation(const Token &tok) {
-  assert(tok.is(tok::annot_template_id) && "Expected template-id token");
-  TemplateIdAnnotation *
-      Id = static_cast<TemplateIdAnnotation *>(tok.getAnnotationValue());
-  return Id;
-}
-
-void Parser::AnnotateScopeToken(CXXScopeSpec &SS, bool IsNewAnnotation) {
-  // Push the current token back into the token stream (or revert it if it is
-  // cached) and use an annotation scope token for current token.
-  if (PP.isBacktrackEnabled())
-    PP.RevertCachedTokens(1);
-  else
-    PP.EnterToken(Tok);
-  Tok.setKind(tok::annot_cxxscope);
-  Tok.setAnnotationValue(Actions.SaveNestedNameSpecifierAnnotation(SS));
-  Tok.setAnnotationRange(SS.getRange());
-
-  // In case the tokens were cached, have Preprocessor replace them
-  // with the annotation token.  We don't need to do this if we've
-  // just reverted back to a prior state.
-  if (IsNewAnnotation)
-    PP.AnnotateCachedTokens(Tok);
-}
-
-/// Attempt to classify the name at the current token position. This may
-/// form a type, scope or primary expression annotation, or replace the token
-/// with a typo-corrected keyword. This is only appropriate when the current
-/// name must refer to an entity which has already been declared.
-///
-/// \param IsAddressOfOperand Must be \c true if the name is preceded by an '&'
-///        and might possibly have a dependent nested name specifier.
-/// \param CCC Indicates how to perform typo-correction for this name. If NULL,
-///        no typo correction will be performed.
-Parser::AnnotatedNameKind
-Parser::TryAnnotateName(bool IsAddressOfOperand,
-                        std::unique_ptr<CorrectionCandidateCallback> CCC) {
-  assert(Tok.is(tok::identifier) || Tok.is(tok::annot_cxxscope));
-
-  const bool EnteringContext = false;
-  const bool WasScopeAnnotation = Tok.is(tok::annot_cxxscope);
-
-  CXXScopeSpec SS;
-  if (getLangOpts().CPlusPlus &&
-      ParseOptionalCXXScopeSpecifier(SS, nullptr, EnteringContext))
-    return ANK_Error;
-
-  if (Tok.isNot(tok::identifier) || SS.isInvalid()) {
-    if (TryAnnotateTypeOrScopeTokenAfterScopeSpec(SS, !WasScopeAnnotation))
-      return ANK_Error;
-    return ANK_Unresolved;
-  }
-
-  IdentifierInfo *Name = Tok.getIdentifierInfo();
-  SourceLocation NameLoc = Tok.getLocation();
-
-  // FIXME: Move the tentative declaration logic into ClassifyName so we can
-  // typo-correct to tentatively-declared identifiers.
-  if (isTentativelyDeclared(Name)) {
-    // Identifier has been tentatively declared, and thus cannot be resolved as
-    // an expression. Fall back to annotating it as a type.
-    if (TryAnnotateTypeOrScopeTokenAfterScopeSpec(SS, !WasScopeAnnotation))
-      return ANK_Error;
-    return Tok.is(tok::annot_typename) ? ANK_Success : ANK_TentativeDecl;
-  }
-
-  Token Next = NextToken();
-
-  // Look up and classify the identifier. We don't perform any typo-correction
-  // after a scope specifier, because in general we can't recover from typos
-  // there (eg, after correcting 'A::template B<X>::C' [sic], we would need to
-  // jump back into scope specifier parsing).
-  Sema::NameClassification Classification = Actions.ClassifyName(
-      getCurScope(), SS, Name, NameLoc, Next, IsAddressOfOperand,
-      SS.isEmpty() ? std::move(CCC) : nullptr);
-
-  switch (Classification.getKind()) {
-  case Sema::NC_Error:
-    return ANK_Error;
-
-  case Sema::NC_Keyword:
-    // The identifier was typo-corrected to a keyword.
-    Tok.setIdentifierInfo(Name);
-    Tok.setKind(Name->getTokenID());
-    PP.TypoCorrectToken(Tok);
-    if (SS.isNotEmpty())
-      AnnotateScopeToken(SS, !WasScopeAnnotation);
-    // We've "annotated" this as a keyword.
-    return ANK_Success;
-
-  case Sema::NC_Unknown:
-    // It's not something we know about. Leave it unannotated.
-    break;
-
-  case Sema::NC_Type: {
-    SourceLocation BeginLoc = NameLoc;
-    if (SS.isNotEmpty())
-      BeginLoc = SS.getBeginLoc();
-
-    /// An Objective-C object type followed by '<' is a specialization of
-    /// a parameterized class type or a protocol-qualified type.
-    ParsedType Ty = Classification.getType();
-    if (getLangOpts().ObjC && NextToken().is(tok::less) &&
-        (Ty.get()->isObjCObjectType() ||
-         Ty.get()->isObjCObjectPointerType())) {
-      // Consume the name.
-      SourceLocation IdentifierLoc = ConsumeToken();
-      SourceLocation NewEndLoc;
-      TypeResult NewType
-          = parseObjCTypeArgsAndProtocolQualifiers(IdentifierLoc, Ty,
-                                                   /*consumeLastToken=*/false,
-                                                   NewEndLoc);
-      if (NewType.isUsable())
-        Ty = NewType.get();
-      else if (Tok.is(tok::eof)) // Nothing to do here, bail out...
-        return ANK_Error;
-    }
-
-    Tok.setKind(tok::annot_typename);
-    setTypeAnnotation(Tok, Ty);
-    Tok.setAnnotationEndLoc(Tok.getLocation());
-    Tok.setLocation(BeginLoc);
-    PP.AnnotateCachedTokens(Tok);
-    return ANK_Success;
-  }
-
-  case Sema::NC_Expression:
-    Tok.setKind(tok::annot_primary_expr);
-    setExprAnnotation(Tok, Classification.getExpression());
-    Tok.setAnnotationEndLoc(NameLoc);
-    if (SS.isNotEmpty())
-      Tok.setLocation(SS.getBeginLoc());
-    PP.AnnotateCachedTokens(Tok);
-    return ANK_Success;
-
-  case Sema::NC_TypeTemplate:
-    if (Next.isNot(tok::less)) {
-      // This may be a type template being used as a template template argument.
-      if (SS.isNotEmpty())
-        AnnotateScopeToken(SS, !WasScopeAnnotation);
-      return ANK_TemplateName;
-    }
-    LLVM_FALLTHROUGH;
-  case Sema::NC_VarTemplate:
-  case Sema::NC_FunctionTemplate: {
-    // We have a type, variable or function template followed by '<'.
-    ConsumeToken();
-    UnqualifiedId Id;
-    Id.setIdentifier(Name, NameLoc);
-    if (AnnotateTemplateIdToken(
-            TemplateTy::make(Classification.getTemplateName()),
-            Classification.getTemplateNameKind(), SS, SourceLocation(), Id))
-      return ANK_Error;
-    return ANK_Success;
-  }
-
-  case Sema::NC_NestedNameSpecifier:
-    llvm_unreachable("already parsed nested name specifier");
-  }
-
-  // Unable to classify the name, but maybe we can annotate a scope specifier.
-  if (SS.isNotEmpty())
-    AnnotateScopeToken(SS, !WasScopeAnnotation);
-  return ANK_Unresolved;
-}
-
-bool Parser::TryKeywordIdentFallback(bool DisableKeyword) {
-  assert(Tok.isNot(tok::identifier));
-  Diag(Tok, diag::ext_keyword_as_ident)
-    << PP.getSpelling(Tok)
-    << DisableKeyword;
-  if (DisableKeyword)
-    Tok.getIdentifierInfo()->revertTokenIDToIdentifier();
-  Tok.setKind(tok::identifier);
-  return true;
-}
-
-/// TryAnnotateTypeOrScopeToken - If the current token position is on a
-/// typename (possibly qualified in C++) or a C++ scope specifier not followed
-/// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens
-/// with a single annotation token representing the typename or C++ scope
-/// respectively.
-/// This simplifies handling of C++ scope specifiers and allows efficient
-/// backtracking without the need to re-parse and resolve nested-names and
-/// typenames.
-/// It will mainly be called when we expect to treat identifiers as typenames
-/// (if they are typenames). For example, in C we do not expect identifiers
-/// inside expressions to be treated as typenames so it will not be called
-/// for expressions in C.
-/// The benefit for C/ObjC is that a typename will be annotated and
-/// Actions.getTypeName will not be needed to be called again (e.g. getTypeName
-/// will not be called twice, once to check whether we have a declaration
-/// specifier, and another one to get the actual type inside
-/// ParseDeclarationSpecifiers).
-///
-/// This returns true if an error occurred.
-///
-/// Note that this routine emits an error if you call it with ::new or ::delete
-/// as the current tokens, so only call it in contexts where these are invalid.
-bool Parser::TryAnnotateTypeOrScopeToken() {
-  assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) ||
-          Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope) ||
-          Tok.is(tok::kw_decltype) || Tok.is(tok::annot_template_id) ||
-          Tok.is(tok::kw___super)) &&
-         "Cannot be a type or scope token!");
-
-  if (Tok.is(tok::kw_typename)) {
-    // MSVC lets you do stuff like:
-    //   typename typedef T_::D D;
-    //
-    // We will consume the typedef token here and put it back after we have
-    // parsed the first identifier, transforming it into something more like:
-    //   typename T_::D typedef D;
-    if (getLangOpts().MSVCCompat && NextToken().is(tok::kw_typedef)) {
-      Token TypedefToken;
-      PP.Lex(TypedefToken);
-      bool Result = TryAnnotateTypeOrScopeToken();
-      PP.EnterToken(Tok);
-      Tok = TypedefToken;
-      if (!Result)
-        Diag(Tok.getLocation(), diag::warn_expected_qualified_after_typename);
-      return Result;
-    }
-
-    // Parse a C++ typename-specifier, e.g., "typename T::type".
-    //
-    //   typename-specifier:
-    //     'typename' '::' [opt] nested-name-specifier identifier
-    //     'typename' '::' [opt] nested-name-specifier template [opt]
-    //            simple-template-id
-    SourceLocation TypenameLoc = ConsumeToken();
-    CXXScopeSpec SS;
-    if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/nullptr,
-                                       /*EnteringContext=*/false, nullptr,
-                                       /*IsTypename*/ true))
-      return true;
-    if (!SS.isSet()) {
-      if (Tok.is(tok::identifier) || Tok.is(tok::annot_template_id) ||
-          Tok.is(tok::annot_decltype)) {
-        // Attempt to recover by skipping the invalid 'typename'
-        if (Tok.is(tok::annot_decltype) ||
-            (!TryAnnotateTypeOrScopeToken() && Tok.isAnnotation())) {
-          unsigned DiagID = diag::err_expected_qualified_after_typename;
-          // MS compatibility: MSVC permits using known types with typename.
-          // e.g. "typedef typename T* pointer_type"
-          if (getLangOpts().MicrosoftExt)
-            DiagID = diag::warn_expected_qualified_after_typename;
-          Diag(Tok.getLocation(), DiagID);
-          return false;
-        }
-      }
-      if (Tok.isEditorPlaceholder())
-        return true;
-
-      Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename);
-      return true;
-    }
-
-    TypeResult Ty;
-    if (Tok.is(tok::identifier)) {
-      // FIXME: check whether the next token is '<', first!
-      Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS,
-                                     *Tok.getIdentifierInfo(),
-                                     Tok.getLocation());
-    } else if (Tok.is(tok::annot_template_id)) {
-      TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
-      if (TemplateId->Kind != TNK_Type_template &&
-          TemplateId->Kind != TNK_Dependent_template_name) {
-        Diag(Tok, diag::err_typename_refers_to_non_type_template)
-          << Tok.getAnnotationRange();
-        return true;
-      }
-
-      ASTTemplateArgsPtr TemplateArgsPtr(TemplateId->getTemplateArgs(),
-                                         TemplateId->NumArgs);
-
-      Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS,
-                                     TemplateId->TemplateKWLoc,
-                                     TemplateId->Template,
-                                     TemplateId->Name,
-                                     TemplateId->TemplateNameLoc,
-                                     TemplateId->LAngleLoc,
-                                     TemplateArgsPtr,
-                                     TemplateId->RAngleLoc);
-    } else {
-      Diag(Tok, diag::err_expected_type_name_after_typename)
-        << SS.getRange();
-      return true;
-    }
-
-    SourceLocation EndLoc = Tok.getLastLoc();
-    Tok.setKind(tok::annot_typename);
-    setTypeAnnotation(Tok, Ty.isInvalid() ? nullptr : Ty.get());
-    Tok.setAnnotationEndLoc(EndLoc);
-    Tok.setLocation(TypenameLoc);
-    PP.AnnotateCachedTokens(Tok);
-    return false;
-  }
-
-  // Remembers whether the token was originally a scope annotation.
-  bool WasScopeAnnotation = Tok.is(tok::annot_cxxscope);
-
-  CXXScopeSpec SS;
-  if (getLangOpts().CPlusPlus)
-    if (ParseOptionalCXXScopeSpecifier(SS, nullptr, /*EnteringContext*/false))
-      return true;
-
-  return TryAnnotateTypeOrScopeTokenAfterScopeSpec(SS, !WasScopeAnnotation);
-}
-
-/// Try to annotate a type or scope token, having already parsed an
-/// optional scope specifier. \p IsNewScope should be \c true unless the scope
-/// specifier was extracted from an existing tok::annot_cxxscope annotation.
-bool Parser::TryAnnotateTypeOrScopeTokenAfterScopeSpec(CXXScopeSpec &SS,
-                                                       bool IsNewScope) {
-  if (Tok.is(tok::identifier)) {
-    // Determine whether the identifier is a type name.
-    if (ParsedType Ty = Actions.getTypeName(
-            *Tok.getIdentifierInfo(), Tok.getLocation(), getCurScope(), &SS,
-            false, NextToken().is(tok::period), nullptr,
-            /*IsCtorOrDtorName=*/false,
-            /*NonTrivialTypeSourceInfo*/true,
-            /*IsClassTemplateDeductionContext*/true)) {
-      SourceLocation BeginLoc = Tok.getLocation();
-      if (SS.isNotEmpty()) // it was a C++ qualified type name.
-        BeginLoc = SS.getBeginLoc();
-
-      /// An Objective-C object type followed by '<' is a specialization of
-      /// a parameterized class type or a protocol-qualified type.
-      if (getLangOpts().ObjC && NextToken().is(tok::less) &&
-          (Ty.get()->isObjCObjectType() ||
-           Ty.get()->isObjCObjectPointerType())) {
-        // Consume the name.
-        SourceLocation IdentifierLoc = ConsumeToken();
-        SourceLocation NewEndLoc;
-        TypeResult NewType
-          = parseObjCTypeArgsAndProtocolQualifiers(IdentifierLoc, Ty,
-                                                   /*consumeLastToken=*/false,
-                                                   NewEndLoc);
-        if (NewType.isUsable())
-          Ty = NewType.get();
-        else if (Tok.is(tok::eof)) // Nothing to do here, bail out...
-          return false;
-      }
-
-      // This is a typename. Replace the current token in-place with an
-      // annotation type token.
-      Tok.setKind(tok::annot_typename);
-      setTypeAnnotation(Tok, Ty);
-      Tok.setAnnotationEndLoc(Tok.getLocation());
-      Tok.setLocation(BeginLoc);
-
-      // In case the tokens were cached, have Preprocessor replace
-      // them with the annotation token.
-      PP.AnnotateCachedTokens(Tok);
-      return false;
-    }
-
-    if (!getLangOpts().CPlusPlus) {
-      // If we're in C, we can't have :: tokens at all (the lexer won't return
-      // them).  If the identifier is not a type, then it can't be scope either,
-      // just early exit.
-      return false;
-    }
-
-    // If this is a template-id, annotate with a template-id or type token.
-    if (NextToken().is(tok::less)) {
-      TemplateTy Template;
-      UnqualifiedId TemplateName;
-      TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation());
-      bool MemberOfUnknownSpecialization;
-      if (TemplateNameKind TNK = Actions.isTemplateName(
-              getCurScope(), SS,
-              /*hasTemplateKeyword=*/false, TemplateName,
-              /*ObjectType=*/nullptr, /*EnteringContext*/false, Template,
-              MemberOfUnknownSpecialization)) {
-        // Consume the identifier.
-        ConsumeToken();
-        if (AnnotateTemplateIdToken(Template, TNK, SS, SourceLocation(),
-                                    TemplateName)) {
-          // If an unrecoverable error occurred, we need to return true here,
-          // because the token stream is in a damaged state.  We may not return
-          // a valid identifier.
-          return true;
-        }
-      }
-    }
-
-    // The current token, which is either an identifier or a
-    // template-id, is not part of the annotation. Fall through to
-    // push that token back into the stream and complete the C++ scope
-    // specifier annotation.
-  }
-
-  if (Tok.is(tok::annot_template_id)) {
-    TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
-    if (TemplateId->Kind == TNK_Type_template) {
-      // A template-id that refers to a type was parsed into a
-      // template-id annotation in a context where we weren't allowed
-      // to produce a type annotation token. Update the template-id
-      // annotation token to a type annotation token now.
-      AnnotateTemplateIdTokenAsType();
-      return false;
-    }
-  }
-
-  if (SS.isEmpty())
-    return false;
-
-  // A C++ scope specifier that isn't followed by a typename.
-  AnnotateScopeToken(SS, IsNewScope);
-  return false;
-}
-
-/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only
-/// annotates C++ scope specifiers and template-ids.  This returns
-/// true if there was an error that could not be recovered from.
-///
-/// Note that this routine emits an error if you call it with ::new or ::delete
-/// as the current tokens, so only call it in contexts where these are invalid.
-bool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) {
-  assert(getLangOpts().CPlusPlus &&
-         "Call sites of this function should be guarded by checking for C++");
-  assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) ||
-          (Tok.is(tok::annot_template_id) && NextToken().is(tok::coloncolon)) ||
-          Tok.is(tok::kw_decltype) || Tok.is(tok::kw___super)) &&
-         "Cannot be a type or scope token!");
-
-  CXXScopeSpec SS;
-  if (ParseOptionalCXXScopeSpecifier(SS, nullptr, EnteringContext))
-    return true;
-  if (SS.isEmpty())
-    return false;
-
-  AnnotateScopeToken(SS, true);
-  return false;
-}
-
-bool Parser::isTokenEqualOrEqualTypo() {
-  tok::TokenKind Kind = Tok.getKind();
-  switch (Kind) {
-  default:
-    return false;
-  case tok::ampequal:            // &=
-  case tok::starequal:           // *=
-  case tok::plusequal:           // +=
-  case tok::minusequal:          // -=
-  case tok::exclaimequal:        // !=
-  case tok::slashequal:          // /=
-  case tok::percentequal:        // %=
-  case tok::lessequal:           // <=
-  case tok::lesslessequal:       // <<=
-  case tok::greaterequal:        // >=
-  case tok::greatergreaterequal: // >>=
-  case tok::caretequal:          // ^=
-  case tok::pipeequal:           // |=
-  case tok::equalequal:          // ==
-    Diag(Tok, diag::err_invalid_token_after_declarator_suggest_equal)
-        << Kind
-        << FixItHint::CreateReplacement(SourceRange(Tok.getLocation()), "=");
-    LLVM_FALLTHROUGH;
-  case tok::equal:
-    return true;
-  }
-}
-
-SourceLocation Parser::handleUnexpectedCodeCompletionToken() {
-  assert(Tok.is(tok::code_completion));
-  PrevTokLocation = Tok.getLocation();
-
-  for (Scope *S = getCurScope(); S; S = S->getParent()) {
-    if (S->getFlags() & Scope::FnScope) {
-      Actions.CodeCompleteOrdinaryName(getCurScope(),
-                                       Sema::PCC_RecoveryInFunction);
-      cutOffParsing();
-      return PrevTokLocation;
-    }
-
-    if (S->getFlags() & Scope::ClassScope) {
-      Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Class);
-      cutOffParsing();
-      return PrevTokLocation;
-    }
-  }
-
-  Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Namespace);
-  cutOffParsing();
-  return PrevTokLocation;
-}
-
-// Code-completion pass-through functions
-
-void Parser::CodeCompleteDirective(bool InConditional) {
-  Actions.CodeCompletePreprocessorDirective(InConditional);
-}
-
-void Parser::CodeCompleteInConditionalExclusion() {
-  Actions.CodeCompleteInPreprocessorConditionalExclusion(getCurScope());
-}
-
-void Parser::CodeCompleteMacroName(bool IsDefinition) {
-  Actions.CodeCompletePreprocessorMacroName(IsDefinition);
-}
-
-void Parser::CodeCompletePreprocessorExpression() {
-  Actions.CodeCompletePreprocessorExpression();
-}
-
-void Parser::CodeCompleteMacroArgument(IdentifierInfo *Macro,
-                                       MacroInfo *MacroInfo,
-                                       unsigned ArgumentIndex) {
-  Actions.CodeCompletePreprocessorMacroArgument(getCurScope(), Macro, MacroInfo,
-                                                ArgumentIndex);
-}
-
-void Parser::CodeCompleteIncludedFile(llvm::StringRef Dir, bool IsAngled) {
-  Actions.CodeCompleteIncludedFile(Dir, IsAngled);
-}
-
-void Parser::CodeCompleteNaturalLanguage() {
-  Actions.CodeCompleteNaturalLanguage();
-}
-
-bool Parser::ParseMicrosoftIfExistsCondition(IfExistsCondition& Result) {
-  assert((Tok.is(tok::kw___if_exists) || Tok.is(tok::kw___if_not_exists)) &&
-         "Expected '__if_exists' or '__if_not_exists'");
-  Result.IsIfExists = Tok.is(tok::kw___if_exists);
-  Result.KeywordLoc = ConsumeToken();
-
-  BalancedDelimiterTracker T(*this, tok::l_paren);
-  if (T.consumeOpen()) {
-    Diag(Tok, diag::err_expected_lparen_after)
-      << (Result.IsIfExists? "__if_exists" : "__if_not_exists");
-    return true;
-  }
-
-  // Parse nested-name-specifier.
-  if (getLangOpts().CPlusPlus)
-    ParseOptionalCXXScopeSpecifier(Result.SS, nullptr,
-                                   /*EnteringContext=*/false);
-
-  // Check nested-name specifier.
-  if (Result.SS.isInvalid()) {
-    T.skipToEnd();
-    return true;
-  }
-
-  // Parse the unqualified-id.
-  SourceLocation TemplateKWLoc; // FIXME: parsed, but unused.
-  if (ParseUnqualifiedId(
-          Result.SS, /*EnteringContext*/false, /*AllowDestructorName*/true,
-          /*AllowConstructorName*/true, /*AllowDeductionGuide*/false, nullptr,
-          &TemplateKWLoc, Result.Name)) {
-    T.skipToEnd();
-    return true;
-  }
-
-  if (T.consumeClose())
-    return true;
-
-  // Check if the symbol exists.
-  switch (Actions.CheckMicrosoftIfExistsSymbol(getCurScope(), Result.KeywordLoc,
-                                               Result.IsIfExists, Result.SS,
-                                               Result.Name)) {
-  case Sema::IER_Exists:
-    Result.Behavior = Result.IsIfExists ? IEB_Parse : IEB_Skip;
-    break;
-
-  case Sema::IER_DoesNotExist:
-    Result.Behavior = !Result.IsIfExists ? IEB_Parse : IEB_Skip;
-    break;
-
-  case Sema::IER_Dependent:
-    Result.Behavior = IEB_Dependent;
-    break;
-
-  case Sema::IER_Error:
-    return true;
-  }
-
-  return false;
-}
-
-void Parser::ParseMicrosoftIfExistsExternalDeclaration() {
-  IfExistsCondition Result;
-  if (ParseMicrosoftIfExistsCondition(Result))
-    return;
-
-  BalancedDelimiterTracker Braces(*this, tok::l_brace);
-  if (Braces.consumeOpen()) {
-    Diag(Tok, diag::err_expected) << tok::l_brace;
-    return;
-  }
-
-  switch (Result.Behavior) {
-  case IEB_Parse:
-    // Parse declarations below.
-    break;
-
-  case IEB_Dependent:
-    llvm_unreachable("Cannot have a dependent external declaration");
-
-  case IEB_Skip:
-    Braces.skipToEnd();
-    return;
-  }
-
-  // Parse the declarations.
-  // FIXME: Support module import within __if_exists?
-  while (Tok.isNot(tok::r_brace) && !isEofOrEom()) {
-    ParsedAttributesWithRange attrs(AttrFactory);
-    MaybeParseCXX11Attributes(attrs);
-    DeclGroupPtrTy Result = ParseExternalDeclaration(attrs);
-    if (Result && !getCurScope()->getParent())
-      Actions.getASTConsumer().HandleTopLevelDecl(Result.get());
-  }
-  Braces.consumeClose();
-}
-
-/// Parse a C++ Modules TS module declaration, which appears at the beginning
-/// of a module interface, module partition, or module implementation file.
-///
-///   module-declaration:   [Modules TS + P0273R0 + P0629R0]
-///     'export'[opt] 'module' 'partition'[opt]
-///            module-name attribute-specifier-seq[opt] ';'
-///
-/// Note that 'partition' is a context-sensitive keyword.
-Parser::DeclGroupPtrTy Parser::ParseModuleDecl() {
-  SourceLocation StartLoc = Tok.getLocation();
-
-  Sema::ModuleDeclKind MDK = TryConsumeToken(tok::kw_export)
-                                 ? Sema::ModuleDeclKind::Interface
-                                 : Sema::ModuleDeclKind::Implementation;
-
-  assert(Tok.is(tok::kw_module) && "not a module declaration");
-  SourceLocation ModuleLoc = ConsumeToken();
-
-  if (Tok.is(tok::identifier) && NextToken().is(tok::identifier) &&
-      Tok.getIdentifierInfo()->isStr("partition")) {
-    // If 'partition' is present, this must be a module interface unit.
-    if (MDK != Sema::ModuleDeclKind::Interface)
-      Diag(Tok.getLocation(), diag::err_module_implementation_partition)
-        << FixItHint::CreateInsertion(ModuleLoc, "export ");
-    MDK = Sema::ModuleDeclKind::Partition;
-    ConsumeToken();
-  }
-
-  SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> Path;
-  if (ParseModuleName(ModuleLoc, Path, /*IsImport*/false))
-    return nullptr;
-
-  // We don't support any module attributes yet; just parse them and diagnose.
-  ParsedAttributesWithRange Attrs(AttrFactory);
-  MaybeParseCXX11Attributes(Attrs);
-  ProhibitCXX11Attributes(Attrs, diag::err_attribute_not_module_attr);
-
-  ExpectAndConsumeSemi(diag::err_module_expected_semi);
-
-  return Actions.ActOnModuleDecl(StartLoc, ModuleLoc, MDK, Path);
-}
-
-/// Parse a module import declaration. This is essentially the same for
-/// Objective-C and the C++ Modules TS, except for the leading '@' (in ObjC)
-/// and the trailing optional attributes (in C++).
-///
-/// [ObjC]  @import declaration:
-///           '@' 'import' module-name ';'
-/// [ModTS] module-import-declaration:
-///           'import' module-name attribute-specifier-seq[opt] ';'
-Decl *Parser::ParseModuleImport(SourceLocation AtLoc) {
-  assert((AtLoc.isInvalid() ? Tok.is(tok::kw_import)
-                            : Tok.isObjCAtKeyword(tok::objc_import)) &&
-         "Improper start to module import");
-  bool IsObjCAtImport = Tok.isObjCAtKeyword(tok::objc_import);
-  SourceLocation ImportLoc = ConsumeToken();
-  SourceLocation StartLoc = AtLoc.isInvalid() ? ImportLoc : AtLoc;
-
-  SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> Path;
-  if (ParseModuleName(ImportLoc, Path, /*IsImport*/true))
-    return nullptr;
-
-  ParsedAttributesWithRange Attrs(AttrFactory);
-  MaybeParseCXX11Attributes(Attrs);
-  // We don't support any module import attributes yet.
-  ProhibitCXX11Attributes(Attrs, diag::err_attribute_not_import_attr);
-
-  if (PP.hadModuleLoaderFatalFailure()) {
-    // With a fatal failure in the module loader, we abort parsing.
-    cutOffParsing();
-    return nullptr;
-  }
-
-  DeclResult Import = Actions.ActOnModuleImport(StartLoc, ImportLoc, Path);
-  ExpectAndConsumeSemi(diag::err_module_expected_semi);
-  if (Import.isInvalid())
-    return nullptr;
-
-  // Using '@import' in framework headers requires modules to be enabled so that
-  // the header is parseable. Emit a warning to make the user aware.
-  if (IsObjCAtImport && AtLoc.isValid()) {
-    auto &SrcMgr = PP.getSourceManager();
-    auto *FE = SrcMgr.getFileEntryForID(SrcMgr.getFileID(AtLoc));
-    if (FE && llvm::sys::path::parent_path(FE->getDir()->getName())
-                  .endswith(".framework"))
-      Diags.Report(AtLoc, diag::warn_atimport_in_framework_header);
-  }
-
-  return Import.get();
-}
-
-/// Parse a C++ Modules TS / Objective-C module name (both forms use the same
-/// grammar).
-///
-///         module-name:
-///           module-name-qualifier[opt] identifier
-///         module-name-qualifier:
-///           module-name-qualifier[opt] identifier '.'
-bool Parser::ParseModuleName(
-    SourceLocation UseLoc,
-    SmallVectorImpl<std::pair<IdentifierInfo *, SourceLocation>> &Path,
-    bool IsImport) {
-  // Parse the module path.
-  while (true) {
-    if (!Tok.is(tok::identifier)) {
-      if (Tok.is(tok::code_completion)) {
-        Actions.CodeCompleteModuleImport(UseLoc, Path);
-        cutOffParsing();
-        return true;
-      }
-
-      Diag(Tok, diag::err_module_expected_ident) << IsImport;
-      SkipUntil(tok::semi);
-      return true;
-    }
-
-    // Record this part of the module path.
-    Path.push_back(std::make_pair(Tok.getIdentifierInfo(), Tok.getLocation()));
-    ConsumeToken();
-
-    if (Tok.isNot(tok::period))
-      return false;
-
-    ConsumeToken();
-  }
-}
-
-/// Try recover parser when module annotation appears where it must not
-/// be found.
-/// \returns false if the recover was successful and parsing may be continued, or
-/// true if parser must bail out to top level and handle the token there.
-bool Parser::parseMisplacedModuleImport() {
-  while (true) {
-    switch (Tok.getKind()) {
-    case tok::annot_module_end:
-      // If we recovered from a misplaced module begin, we expect to hit a
-      // misplaced module end too. Stay in the current context when this
-      // happens.
-      if (MisplacedModuleBeginCount) {
-        --MisplacedModuleBeginCount;
-        Actions.ActOnModuleEnd(Tok.getLocation(),
-                               reinterpret_cast<Module *>(
-                                   Tok.getAnnotationValue()));
-        ConsumeAnnotationToken();
-        continue;
-      }
-      // Inform caller that recovery failed, the error must be handled at upper
-      // level. This will generate the desired "missing '}' at end of module"
-      // diagnostics on the way out.
-      return true;
-    case tok::annot_module_begin:
-      // Recover by entering the module (Sema will diagnose).
-      Actions.ActOnModuleBegin(Tok.getLocation(),
-                               reinterpret_cast<Module *>(
-                                   Tok.getAnnotationValue()));
-      ConsumeAnnotationToken();
-      ++MisplacedModuleBeginCount;
-      continue;
-    case tok::annot_module_include:
-      // Module import found where it should not be, for instance, inside a
-      // namespace. Recover by importing the module.
-      Actions.ActOnModuleInclude(Tok.getLocation(),
-                                 reinterpret_cast<Module *>(
-                                     Tok.getAnnotationValue()));
-      ConsumeAnnotationToken();
-      // If there is another module import, process it.
-      continue;
-    default:
-      return false;
-    }
-  }
-  return false;
-}
-
-bool BalancedDelimiterTracker::diagnoseOverflow() {
-  P.Diag(P.Tok, diag::err_bracket_depth_exceeded)
-    << P.getLangOpts().BracketDepth;
-  P.Diag(P.Tok, diag::note_bracket_depth);
-  P.cutOffParsing();
-  return true;
-}
-
-bool BalancedDelimiterTracker::expectAndConsume(unsigned DiagID,
-                                                const char *Msg,
-                                                tok::TokenKind SkipToTok) {
-  LOpen = P.Tok.getLocation();
-  if (P.ExpectAndConsume(Kind, DiagID, Msg)) {
-    if (SkipToTok != tok::unknown)
-      P.SkipUntil(SkipToTok, Parser::StopAtSemi);
-    return true;
-  }
-
-  if (getDepth() < P.getLangOpts().BracketDepth)
-    return false;
-
-  return diagnoseOverflow();
-}
-
-bool BalancedDelimiterTracker::diagnoseMissingClose() {
-  assert(!P.Tok.is(Close) && "Should have consumed closing delimiter");
-
-  if (P.Tok.is(tok::annot_module_end))
-    P.Diag(P.Tok, diag::err_missing_before_module_end) << Close;
-  else
-    P.Diag(P.Tok, diag::err_expected) << Close;
-  P.Diag(LOpen, diag::note_matching) << Kind;
-
-  // If we're not already at some kind of closing bracket, skip to our closing
-  // token.
-  if (P.Tok.isNot(tok::r_paren) && P.Tok.isNot(tok::r_brace) &&
-      P.Tok.isNot(tok::r_square) &&
-      P.SkipUntil(Close, FinalToken,
-                  Parser::StopAtSemi | Parser::StopBeforeMatch) &&
-      P.Tok.is(Close))
-    LClose = P.ConsumeAnyToken();
-  return true;
-}
-
-void BalancedDelimiterTracker::skipToEnd() {
-  P.SkipUntil(Close, Parser::StopBeforeMatch);
-  consumeClose();
-}