Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 3180 deletions

diff --git a/gnu/llvm/tools/clang/lib/Parse/ParseExpr.cpp b/gnu/llvm/tools/clang/lib/Parse/ParseExpr.cpp
deleted file mode 100644
index 4bcbebcbb48..00000000000
--- a/gnu/llvm/tools/clang/lib/Parse/ParseExpr.cpp
+++ /dev/null
@@ -1,3180 +0,0 @@
-//===--- ParseExpr.cpp - Expression Parsing -------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// Provides the Expression parsing implementation.
-///
-/// Expressions in C99 basically consist of a bunch of binary operators with
-/// unary operators and other random stuff at the leaves.
-///
-/// In the C99 grammar, these unary operators bind tightest and are represented
-/// as the 'cast-expression' production.  Everything else is either a binary
-/// operator (e.g. '/') or a ternary operator ("?:").  The unary leaves are
-/// handled by ParseCastExpression, the higher level pieces are handled by
-/// ParseBinaryExpression.
-///
-//===----------------------------------------------------------------------===//
-
-#include "clang/Parse/Parser.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/Basic/PrettyStackTrace.h"
-#include "clang/Parse/RAIIObjectsForParser.h"
-#include "clang/Sema/DeclSpec.h"
-#include "clang/Sema/ParsedTemplate.h"
-#include "clang/Sema/Scope.h"
-#include "clang/Sema/TypoCorrection.h"
-#include "llvm/ADT/SmallVector.h"
-using namespace clang;
-
-/// Simple precedence-based parser for binary/ternary operators.
-///
-/// Note: we diverge from the C99 grammar when parsing the assignment-expression
-/// production.  C99 specifies that the LHS of an assignment operator should be
-/// parsed as a unary-expression, but consistency dictates that it be a
-/// conditional-expession.  In practice, the important thing here is that the
-/// LHS of an assignment has to be an l-value, which productions between
-/// unary-expression and conditional-expression don't produce.  Because we want
-/// consistency, we parse the LHS as a conditional-expression, then check for
-/// l-value-ness in semantic analysis stages.
-///
-/// \verbatim
-///       pm-expression: [C++ 5.5]
-///         cast-expression
-///         pm-expression '.*' cast-expression
-///         pm-expression '->*' cast-expression
-///
-///       multiplicative-expression: [C99 6.5.5]
-///     Note: in C++, apply pm-expression instead of cast-expression
-///         cast-expression
-///         multiplicative-expression '*' cast-expression
-///         multiplicative-expression '/' cast-expression
-///         multiplicative-expression '%' cast-expression
-///
-///       additive-expression: [C99 6.5.6]
-///         multiplicative-expression
-///         additive-expression '+' multiplicative-expression
-///         additive-expression '-' multiplicative-expression
-///
-///       shift-expression: [C99 6.5.7]
-///         additive-expression
-///         shift-expression '<<' additive-expression
-///         shift-expression '>>' additive-expression
-///
-///       compare-expression: [C++20 expr.spaceship]
-///         shift-expression
-///         compare-expression '<=>' shift-expression
-///
-///       relational-expression: [C99 6.5.8]
-///         compare-expression
-///         relational-expression '<' compare-expression
-///         relational-expression '>' compare-expression
-///         relational-expression '<=' compare-expression
-///         relational-expression '>=' compare-expression
-///
-///       equality-expression: [C99 6.5.9]
-///         relational-expression
-///         equality-expression '==' relational-expression
-///         equality-expression '!=' relational-expression
-///
-///       AND-expression: [C99 6.5.10]
-///         equality-expression
-///         AND-expression '&' equality-expression
-///
-///       exclusive-OR-expression: [C99 6.5.11]
-///         AND-expression
-///         exclusive-OR-expression '^' AND-expression
-///
-///       inclusive-OR-expression: [C99 6.5.12]
-///         exclusive-OR-expression
-///         inclusive-OR-expression '|' exclusive-OR-expression
-///
-///       logical-AND-expression: [C99 6.5.13]
-///         inclusive-OR-expression
-///         logical-AND-expression '&&' inclusive-OR-expression
-///
-///       logical-OR-expression: [C99 6.5.14]
-///         logical-AND-expression
-///         logical-OR-expression '||' logical-AND-expression
-///
-///       conditional-expression: [C99 6.5.15]
-///         logical-OR-expression
-///         logical-OR-expression '?' expression ':' conditional-expression
-/// [GNU]   logical-OR-expression '?' ':' conditional-expression
-/// [C++] the third operand is an assignment-expression
-///
-///       assignment-expression: [C99 6.5.16]
-///         conditional-expression
-///         unary-expression assignment-operator assignment-expression
-/// [C++]   throw-expression [C++ 15]
-///
-///       assignment-operator: one of
-///         = *= /= %= += -= <<= >>= &= ^= |=
-///
-///       expression: [C99 6.5.17]
-///         assignment-expression ...[opt]
-///         expression ',' assignment-expression ...[opt]
-/// \endverbatim
-ExprResult Parser::ParseExpression(TypeCastState isTypeCast) {
-  ExprResult LHS(ParseAssignmentExpression(isTypeCast));
-  return ParseRHSOfBinaryExpression(LHS, prec::Comma);
-}
-
-/// This routine is called when the '@' is seen and consumed.
-/// Current token is an Identifier and is not a 'try'. This
-/// routine is necessary to disambiguate \@try-statement from,
-/// for example, \@encode-expression.
-///
-ExprResult
-Parser::ParseExpressionWithLeadingAt(SourceLocation AtLoc) {
-  ExprResult LHS(ParseObjCAtExpression(AtLoc));
-  return ParseRHSOfBinaryExpression(LHS, prec::Comma);
-}
-
-/// This routine is called when a leading '__extension__' is seen and
-/// consumed.  This is necessary because the token gets consumed in the
-/// process of disambiguating between an expression and a declaration.
-ExprResult
-Parser::ParseExpressionWithLeadingExtension(SourceLocation ExtLoc) {
-  ExprResult LHS(true);
-  {
-    // Silence extension warnings in the sub-expression
-    ExtensionRAIIObject O(Diags);
-
-    LHS = ParseCastExpression(false);
-  }
-
-  if (!LHS.isInvalid())
-    LHS = Actions.ActOnUnaryOp(getCurScope(), ExtLoc, tok::kw___extension__,
-                               LHS.get());
-
-  return ParseRHSOfBinaryExpression(LHS, prec::Comma);
-}
-
-/// Parse an expr that doesn't include (top-level) commas.
-ExprResult Parser::ParseAssignmentExpression(TypeCastState isTypeCast) {
-  if (Tok.is(tok::code_completion)) {
-    Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Expression);
-    cutOffParsing();
-    return ExprError();
-  }
-
-  if (Tok.is(tok::kw_throw))
-    return ParseThrowExpression();
-  if (Tok.is(tok::kw_co_yield))
-    return ParseCoyieldExpression();
-
-  ExprResult LHS = ParseCastExpression(/*isUnaryExpression=*/false,
-                                       /*isAddressOfOperand=*/false,
-                                       isTypeCast);
-  return ParseRHSOfBinaryExpression(LHS, prec::Assignment);
-}
-
-/// Parse an assignment expression where part of an Objective-C message
-/// send has already been parsed.
-///
-/// In this case \p LBracLoc indicates the location of the '[' of the message
-/// send, and either \p ReceiverName or \p ReceiverExpr is non-null indicating
-/// the receiver of the message.
-///
-/// Since this handles full assignment-expression's, it handles postfix
-/// expressions and other binary operators for these expressions as well.
-ExprResult
-Parser::ParseAssignmentExprWithObjCMessageExprStart(SourceLocation LBracLoc,
-                                                    SourceLocation SuperLoc,
-                                                    ParsedType ReceiverType,
-                                                    Expr *ReceiverExpr) {
-  ExprResult R
-    = ParseObjCMessageExpressionBody(LBracLoc, SuperLoc,
-                                     ReceiverType, ReceiverExpr);
-  R = ParsePostfixExpressionSuffix(R);
-  return ParseRHSOfBinaryExpression(R, prec::Assignment);
-}
-
-ExprResult
-Parser::ParseConstantExpressionInExprEvalContext(TypeCastState isTypeCast) {
-  assert(Actions.ExprEvalContexts.back().Context ==
-             Sema::ExpressionEvaluationContext::ConstantEvaluated &&
-         "Call this function only if your ExpressionEvaluationContext is "
-         "already ConstantEvaluated");
-  ExprResult LHS(ParseCastExpression(false, false, isTypeCast));
-  ExprResult Res(ParseRHSOfBinaryExpression(LHS, prec::Conditional));
-  return Actions.ActOnConstantExpression(Res);
-}
-
-ExprResult Parser::ParseConstantExpression(TypeCastState isTypeCast) {
-  // C++03 [basic.def.odr]p2:
-  //   An expression is potentially evaluated unless it appears where an
-  //   integral constant expression is required (see 5.19) [...].
-  // C++98 and C++11 have no such rule, but this is only a defect in C++98.
-  EnterExpressionEvaluationContext ConstantEvaluated(
-      Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
-  return ParseConstantExpressionInExprEvalContext(isTypeCast);
-}
-
-ExprResult Parser::ParseCaseExpression(SourceLocation CaseLoc) {
-  EnterExpressionEvaluationContext ConstantEvaluated(
-      Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
-  ExprResult LHS(ParseCastExpression(false, false, NotTypeCast));
-  ExprResult Res(ParseRHSOfBinaryExpression(LHS, prec::Conditional));
-  return Actions.ActOnCaseExpr(CaseLoc, Res);
-}
-
-/// Parse a constraint-expression.
-///
-/// \verbatim
-///       constraint-expression: [Concepts TS temp.constr.decl p1]
-///         logical-or-expression
-/// \endverbatim
-ExprResult Parser::ParseConstraintExpression() {
-  // FIXME: this may erroneously consume a function-body as the braced
-  // initializer list of a compound literal
-  //
-  // FIXME: this may erroneously consume a parenthesized rvalue reference
-  // declarator as a parenthesized address-of-label expression
-  ExprResult LHS(ParseCastExpression(/*isUnaryExpression=*/false));
-  ExprResult Res(ParseRHSOfBinaryExpression(LHS, prec::LogicalOr));
-
-  return Res;
-}
-
-bool Parser::isNotExpressionStart() {
-  tok::TokenKind K = Tok.getKind();
-  if (K == tok::l_brace || K == tok::r_brace  ||
-      K == tok::kw_for  || K == tok::kw_while ||
-      K == tok::kw_if   || K == tok::kw_else  ||
-      K == tok::kw_goto || K == tok::kw_try)
-    return true;
-  // If this is a decl-specifier, we can't be at the start of an expression.
-  return isKnownToBeDeclarationSpecifier();
-}
-
-bool Parser::isFoldOperator(prec::Level Level) const {
-  return Level > prec::Unknown && Level != prec::Conditional &&
-         Level != prec::Spaceship;
-}
-
-bool Parser::isFoldOperator(tok::TokenKind Kind) const {
-  return isFoldOperator(getBinOpPrecedence(Kind, GreaterThanIsOperator, true));
-}
-
-/// Parse a binary expression that starts with \p LHS and has a
-/// precedence of at least \p MinPrec.
-ExprResult
-Parser::ParseRHSOfBinaryExpression(ExprResult LHS, prec::Level MinPrec) {
-  prec::Level NextTokPrec = getBinOpPrecedence(Tok.getKind(),
-                                               GreaterThanIsOperator,
-                                               getLangOpts().CPlusPlus11);
-  SourceLocation ColonLoc;
-
-  while (1) {
-    // If this token has a lower precedence than we are allowed to parse (e.g.
-    // because we are called recursively, or because the token is not a binop),
-    // then we are done!
-    if (NextTokPrec < MinPrec)
-      return LHS;
-
-    // Consume the operator, saving the operator token for error reporting.
-    Token OpToken = Tok;
-    ConsumeToken();
-
-    if (OpToken.is(tok::caretcaret)) {
-      return ExprError(Diag(Tok, diag::err_opencl_logical_exclusive_or));
-    }
-
-    // If we're potentially in a template-id, we may now be able to determine
-    // whether we're actually in one or not.
-    if (OpToken.isOneOf(tok::comma, tok::greater, tok::greatergreater,
-                        tok::greatergreatergreater) &&
-        checkPotentialAngleBracketDelimiter(OpToken))
-      return ExprError();
-
-    // Bail out when encountering a comma followed by a token which can't
-    // possibly be the start of an expression. For instance:
-    //   int f() { return 1, }
-    // We can't do this before consuming the comma, because
-    // isNotExpressionStart() looks at the token stream.
-    if (OpToken.is(tok::comma) && isNotExpressionStart()) {
-      PP.EnterToken(Tok);
-      Tok = OpToken;
-      return LHS;
-    }
-
-    // If the next token is an ellipsis, then this is a fold-expression. Leave
-    // it alone so we can handle it in the paren expression.
-    if (isFoldOperator(NextTokPrec) && Tok.is(tok::ellipsis)) {
-      // FIXME: We can't check this via lookahead before we consume the token
-      // because that tickles a lexer bug.
-      PP.EnterToken(Tok);
-      Tok = OpToken;
-      return LHS;
-    }
-
-    // In Objective-C++, alternative operator tokens can be used as keyword args
-    // in message expressions. Unconsume the token so that it can reinterpreted
-    // as an identifier in ParseObjCMessageExpressionBody. i.e., we support:
-    //   [foo meth:0 and:0];
-    //   [foo not_eq];
-    if (getLangOpts().ObjC && getLangOpts().CPlusPlus &&
-        Tok.isOneOf(tok::colon, tok::r_square) &&
-        OpToken.getIdentifierInfo() != nullptr) {
-      PP.EnterToken(Tok);
-      Tok = OpToken;
-      return LHS;
-    }
-
-    // Special case handling for the ternary operator.
-    ExprResult TernaryMiddle(true);
-    if (NextTokPrec == prec::Conditional) {
-      if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
-        // Parse a braced-init-list here for error recovery purposes.
-        SourceLocation BraceLoc = Tok.getLocation();
-        TernaryMiddle = ParseBraceInitializer();
-        if (!TernaryMiddle.isInvalid()) {
-          Diag(BraceLoc, diag::err_init_list_bin_op)
-              << /*RHS*/ 1 << PP.getSpelling(OpToken)
-              << Actions.getExprRange(TernaryMiddle.get());
-          TernaryMiddle = ExprError();
-        }
-      } else if (Tok.isNot(tok::colon)) {
-        // Don't parse FOO:BAR as if it were a typo for FOO::BAR.
-        ColonProtectionRAIIObject X(*this);
-
-        // Handle this production specially:
-        //   logical-OR-expression '?' expression ':' conditional-expression
-        // In particular, the RHS of the '?' is 'expression', not
-        // 'logical-OR-expression' as we might expect.
-        TernaryMiddle = ParseExpression();
-      } else {
-        // Special case handling of "X ? Y : Z" where Y is empty:
-        //   logical-OR-expression '?' ':' conditional-expression   [GNU]
-        TernaryMiddle = nullptr;
-        Diag(Tok, diag::ext_gnu_conditional_expr);
-      }
-
-      if (TernaryMiddle.isInvalid()) {
-        Actions.CorrectDelayedTyposInExpr(LHS);
-        LHS = ExprError();
-        TernaryMiddle = nullptr;
-      }
-
-      if (!TryConsumeToken(tok::colon, ColonLoc)) {
-        // Otherwise, we're missing a ':'.  Assume that this was a typo that
-        // the user forgot. If we're not in a macro expansion, we can suggest
-        // a fixit hint. If there were two spaces before the current token,
-        // suggest inserting the colon in between them, otherwise insert ": ".
-        SourceLocation FILoc = Tok.getLocation();
-        const char *FIText = ": ";
-        const SourceManager &SM = PP.getSourceManager();
-        if (FILoc.isFileID() || PP.isAtStartOfMacroExpansion(FILoc, &FILoc)) {
-          assert(FILoc.isFileID());
-          bool IsInvalid = false;
-          const char *SourcePtr =
-            SM.getCharacterData(FILoc.getLocWithOffset(-1), &IsInvalid);
-          if (!IsInvalid && *SourcePtr == ' ') {
-            SourcePtr =
-              SM.getCharacterData(FILoc.getLocWithOffset(-2), &IsInvalid);
-            if (!IsInvalid && *SourcePtr == ' ') {
-              FILoc = FILoc.getLocWithOffset(-1);
-              FIText = ":";
-            }
-          }
-        }
-
-        Diag(Tok, diag::err_expected)
-            << tok::colon << FixItHint::CreateInsertion(FILoc, FIText);
-        Diag(OpToken, diag::note_matching) << tok::question;
-        ColonLoc = Tok.getLocation();
-      }
-    }
-
-    // Code completion for the right-hand side of a binary expression goes
-    // through a special hook that takes the left-hand side into account.
-    if (Tok.is(tok::code_completion)) {
-      Actions.CodeCompleteBinaryRHS(getCurScope(), LHS.get(),
-                                    OpToken.getKind());
-      cutOffParsing();
-      return ExprError();
-    }
-
-    // Parse another leaf here for the RHS of the operator.
-    // ParseCastExpression works here because all RHS expressions in C have it
-    // as a prefix, at least. However, in C++, an assignment-expression could
-    // be a throw-expression, which is not a valid cast-expression.
-    // Therefore we need some special-casing here.
-    // Also note that the third operand of the conditional operator is
-    // an assignment-expression in C++, and in C++11, we can have a
-    // braced-init-list on the RHS of an assignment. For better diagnostics,
-    // parse as if we were allowed braced-init-lists everywhere, and check that
-    // they only appear on the RHS of assignments later.
-    ExprResult RHS;
-    bool RHSIsInitList = false;
-    if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
-      RHS = ParseBraceInitializer();
-      RHSIsInitList = true;
-    } else if (getLangOpts().CPlusPlus && NextTokPrec <= prec::Conditional)
-      RHS = ParseAssignmentExpression();
-    else
-      RHS = ParseCastExpression(false);
-
-    if (RHS.isInvalid()) {
-      // FIXME: Errors generated by the delayed typo correction should be
-      // printed before errors from parsing the RHS, not after.
-      Actions.CorrectDelayedTyposInExpr(LHS);
-      if (TernaryMiddle.isUsable())
-        TernaryMiddle = Actions.CorrectDelayedTyposInExpr(TernaryMiddle);
-      LHS = ExprError();
-    }
-
-    // Remember the precedence of this operator and get the precedence of the
-    // operator immediately to the right of the RHS.
-    prec::Level ThisPrec = NextTokPrec;
-    NextTokPrec = getBinOpPrecedence(Tok.getKind(), GreaterThanIsOperator,
-                                     getLangOpts().CPlusPlus11);
-
-    // Assignment and conditional expressions are right-associative.
-    bool isRightAssoc = ThisPrec == prec::Conditional ||
-                        ThisPrec == prec::Assignment;
-
-    // Get the precedence of the operator to the right of the RHS.  If it binds
-    // more tightly with RHS than we do, evaluate it completely first.
-    if (ThisPrec < NextTokPrec ||
-        (ThisPrec == NextTokPrec && isRightAssoc)) {
-      if (!RHS.isInvalid() && RHSIsInitList) {
-        Diag(Tok, diag::err_init_list_bin_op)
-          << /*LHS*/0 << PP.getSpelling(Tok) << Actions.getExprRange(RHS.get());
-        RHS = ExprError();
-      }
-      // If this is left-associative, only parse things on the RHS that bind
-      // more tightly than the current operator.  If it is left-associative, it
-      // is okay, to bind exactly as tightly.  For example, compile A=B=C=D as
-      // A=(B=(C=D)), where each paren is a level of recursion here.
-      // The function takes ownership of the RHS.
-      RHS = ParseRHSOfBinaryExpression(RHS,
-                            static_cast<prec::Level>(ThisPrec + !isRightAssoc));
-      RHSIsInitList = false;
-
-      if (RHS.isInvalid()) {
-        // FIXME: Errors generated by the delayed typo correction should be
-        // printed before errors from ParseRHSOfBinaryExpression, not after.
-        Actions.CorrectDelayedTyposInExpr(LHS);
-        if (TernaryMiddle.isUsable())
-          TernaryMiddle = Actions.CorrectDelayedTyposInExpr(TernaryMiddle);
-        LHS = ExprError();
-      }
-
-      NextTokPrec = getBinOpPrecedence(Tok.getKind(), GreaterThanIsOperator,
-                                       getLangOpts().CPlusPlus11);
-    }
-
-    if (!RHS.isInvalid() && RHSIsInitList) {
-      if (ThisPrec == prec::Assignment) {
-        Diag(OpToken, diag::warn_cxx98_compat_generalized_initializer_lists)
-          << Actions.getExprRange(RHS.get());
-      } else if (ColonLoc.isValid()) {
-        Diag(ColonLoc, diag::err_init_list_bin_op)
-          << /*RHS*/1 << ":"
-          << Actions.getExprRange(RHS.get());
-        LHS = ExprError();
-      } else {
-        Diag(OpToken, diag::err_init_list_bin_op)
-          << /*RHS*/1 << PP.getSpelling(OpToken)
-          << Actions.getExprRange(RHS.get());
-        LHS = ExprError();
-      }
-    }
-
-    ExprResult OrigLHS = LHS;
-    if (!LHS.isInvalid()) {
-      // Combine the LHS and RHS into the LHS (e.g. build AST).
-      if (TernaryMiddle.isInvalid()) {
-        // If we're using '>>' as an operator within a template
-        // argument list (in C++98), suggest the addition of
-        // parentheses so that the code remains well-formed in C++0x.
-        if (!GreaterThanIsOperator && OpToken.is(tok::greatergreater))
-          SuggestParentheses(OpToken.getLocation(),
-                             diag::warn_cxx11_right_shift_in_template_arg,
-                         SourceRange(Actions.getExprRange(LHS.get()).getBegin(),
-                                     Actions.getExprRange(RHS.get()).getEnd()));
-
-        LHS = Actions.ActOnBinOp(getCurScope(), OpToken.getLocation(),
-                                 OpToken.getKind(), LHS.get(), RHS.get());
-
-      } else {
-        LHS = Actions.ActOnConditionalOp(OpToken.getLocation(), ColonLoc,
-                                         LHS.get(), TernaryMiddle.get(),
-                                         RHS.get());
-      }
-      // In this case, ActOnBinOp or ActOnConditionalOp performed the
-      // CorrectDelayedTyposInExpr check.
-      if (!getLangOpts().CPlusPlus)
-        continue;
-    }
-
-    // Ensure potential typos aren't left undiagnosed.
-    if (LHS.isInvalid()) {
-      Actions.CorrectDelayedTyposInExpr(OrigLHS);
-      Actions.CorrectDelayedTyposInExpr(TernaryMiddle);
-      Actions.CorrectDelayedTyposInExpr(RHS);
-    }
-  }
-}
-
-/// Parse a cast-expression, or, if \p isUnaryExpression is true,
-/// parse a unary-expression.
-///
-/// \p isAddressOfOperand exists because an id-expression that is the
-/// operand of address-of gets special treatment due to member pointers.
-///
-ExprResult Parser::ParseCastExpression(bool isUnaryExpression,
-                                       bool isAddressOfOperand,
-                                       TypeCastState isTypeCast,
-                                       bool isVectorLiteral) {
-  bool NotCastExpr;
-  ExprResult Res = ParseCastExpression(isUnaryExpression,
-                                       isAddressOfOperand,
-                                       NotCastExpr,
-                                       isTypeCast,
-                                       isVectorLiteral);
-  if (NotCastExpr)
-    Diag(Tok, diag::err_expected_expression);
-  return Res;
-}
-
-namespace {
-class CastExpressionIdValidator : public CorrectionCandidateCallback {
- public:
-  CastExpressionIdValidator(Token Next, bool AllowTypes, bool AllowNonTypes)
-      : NextToken(Next), AllowNonTypes(AllowNonTypes) {
-    WantTypeSpecifiers = WantFunctionLikeCasts = AllowTypes;
-  }
-
-  bool ValidateCandidate(const TypoCorrection &candidate) override {
-    NamedDecl *ND = candidate.getCorrectionDecl();
-    if (!ND)
-      return candidate.isKeyword();
-
-    if (isa<TypeDecl>(ND))
-      return WantTypeSpecifiers;
-
-    if (!AllowNonTypes || !CorrectionCandidateCallback::ValidateCandidate(candidate))
-      return false;
-
-    if (!NextToken.isOneOf(tok::equal, tok::arrow, tok::period))
-      return true;
-
-    for (auto *C : candidate) {
-      NamedDecl *ND = C->getUnderlyingDecl();
-      if (isa<ValueDecl>(ND) && !isa<FunctionDecl>(ND))
-        return true;
-    }
-    return false;
-  }
-
- private:
-  Token NextToken;
-  bool AllowNonTypes;
-};
-}
-
-/// Parse a cast-expression, or, if \pisUnaryExpression is true, parse
-/// a unary-expression.
-///
-/// \p isAddressOfOperand exists because an id-expression that is the operand
-/// of address-of gets special treatment due to member pointers. NotCastExpr
-/// is set to true if the token is not the start of a cast-expression, and no
-/// diagnostic is emitted in this case and no tokens are consumed.
-///
-/// \verbatim
-///       cast-expression: [C99 6.5.4]
-///         unary-expression
-///         '(' type-name ')' cast-expression
-///
-///       unary-expression:  [C99 6.5.3]
-///         postfix-expression
-///         '++' unary-expression
-///         '--' unary-expression
-/// [Coro]  'co_await' cast-expression
-///         unary-operator cast-expression
-///         'sizeof' unary-expression
-///         'sizeof' '(' type-name ')'
-/// [C++11] 'sizeof' '...' '(' identifier ')'
-/// [GNU]   '__alignof' unary-expression
-/// [GNU]   '__alignof' '(' type-name ')'
-/// [C11]   '_Alignof' '(' type-name ')'
-/// [C++11] 'alignof' '(' type-id ')'
-/// [GNU]   '&&' identifier
-/// [C++11] 'noexcept' '(' expression ')' [C++11 5.3.7]
-/// [C++]   new-expression
-/// [C++]   delete-expression
-///
-///       unary-operator: one of
-///         '&'  '*'  '+'  '-'  '~'  '!'
-/// [GNU]   '__extension__'  '__real'  '__imag'
-///
-///       primary-expression: [C99 6.5.1]
-/// [C99]   identifier
-/// [C++]   id-expression
-///         constant
-///         string-literal
-/// [C++]   boolean-literal  [C++ 2.13.5]
-/// [C++11] 'nullptr'        [C++11 2.14.7]
-/// [C++11] user-defined-literal
-///         '(' expression ')'
-/// [C11]   generic-selection
-///         '__func__'        [C99 6.4.2.2]
-/// [GNU]   '__FUNCTION__'
-/// [MS]    '__FUNCDNAME__'
-/// [MS]    'L__FUNCTION__'
-/// [MS]    '__FUNCSIG__'
-/// [MS]    'L__FUNCSIG__'
-/// [GNU]   '__PRETTY_FUNCTION__'
-/// [GNU]   '(' compound-statement ')'
-/// [GNU]   '__builtin_va_arg' '(' assignment-expression ',' type-name ')'
-/// [GNU]   '__builtin_offsetof' '(' type-name ',' offsetof-member-designator')'
-/// [GNU]   '__builtin_choose_expr' '(' assign-expr ',' assign-expr ','
-///                                     assign-expr ')'
-/// [GNU]   '__builtin_types_compatible_p' '(' type-name ',' type-name ')'
-/// [GNU]   '__null'
-/// [OBJC]  '[' objc-message-expr ']'
-/// [OBJC]  '\@selector' '(' objc-selector-arg ')'
-/// [OBJC]  '\@protocol' '(' identifier ')'
-/// [OBJC]  '\@encode' '(' type-name ')'
-/// [OBJC]  objc-string-literal
-/// [C++]   simple-type-specifier '(' expression-list[opt] ')'      [C++ 5.2.3]
-/// [C++11] simple-type-specifier braced-init-list                  [C++11 5.2.3]
-/// [C++]   typename-specifier '(' expression-list[opt] ')'         [C++ 5.2.3]
-/// [C++11] typename-specifier braced-init-list                     [C++11 5.2.3]
-/// [C++]   'const_cast' '<' type-name '>' '(' expression ')'       [C++ 5.2p1]
-/// [C++]   'dynamic_cast' '<' type-name '>' '(' expression ')'     [C++ 5.2p1]
-/// [C++]   'reinterpret_cast' '<' type-name '>' '(' expression ')' [C++ 5.2p1]
-/// [C++]   'static_cast' '<' type-name '>' '(' expression ')'      [C++ 5.2p1]
-/// [C++]   'typeid' '(' expression ')'                             [C++ 5.2p1]
-/// [C++]   'typeid' '(' type-id ')'                                [C++ 5.2p1]
-/// [C++]   'this'          [C++ 9.3.2]
-/// [G++]   unary-type-trait '(' type-id ')'
-/// [G++]   binary-type-trait '(' type-id ',' type-id ')'           [TODO]
-/// [EMBT]  array-type-trait '(' type-id ',' integer ')'
-/// [clang] '^' block-literal
-///
-///       constant: [C99 6.4.4]
-///         integer-constant
-///         floating-constant
-///         enumeration-constant -> identifier
-///         character-constant
-///
-///       id-expression: [C++ 5.1]
-///                   unqualified-id
-///                   qualified-id
-///
-///       unqualified-id: [C++ 5.1]
-///                   identifier
-///                   operator-function-id
-///                   conversion-function-id
-///                   '~' class-name
-///                   template-id
-///
-///       new-expression: [C++ 5.3.4]
-///                   '::'[opt] 'new' new-placement[opt] new-type-id
-///                                     new-initializer[opt]
-///                   '::'[opt] 'new' new-placement[opt] '(' type-id ')'
-///                                     new-initializer[opt]
-///
-///       delete-expression: [C++ 5.3.5]
-///                   '::'[opt] 'delete' cast-expression
-///                   '::'[opt] 'delete' '[' ']' cast-expression
-///
-/// [GNU/Embarcadero] unary-type-trait:
-///                   '__is_arithmetic'
-///                   '__is_floating_point'
-///                   '__is_integral'
-///                   '__is_lvalue_expr'
-///                   '__is_rvalue_expr'
-///                   '__is_complete_type'
-///                   '__is_void'
-///                   '__is_array'
-///                   '__is_function'
-///                   '__is_reference'
-///                   '__is_lvalue_reference'
-///                   '__is_rvalue_reference'
-///                   '__is_fundamental'
-///                   '__is_object'
-///                   '__is_scalar'
-///                   '__is_compound'
-///                   '__is_pointer'
-///                   '__is_member_object_pointer'
-///                   '__is_member_function_pointer'
-///                   '__is_member_pointer'
-///                   '__is_const'
-///                   '__is_volatile'
-///                   '__is_trivial'
-///                   '__is_standard_layout'
-///                   '__is_signed'
-///                   '__is_unsigned'
-///
-/// [GNU] unary-type-trait:
-///                   '__has_nothrow_assign'
-///                   '__has_nothrow_copy'
-///                   '__has_nothrow_constructor'
-///                   '__has_trivial_assign'                  [TODO]
-///                   '__has_trivial_copy'                    [TODO]
-///                   '__has_trivial_constructor'
-///                   '__has_trivial_destructor'
-///                   '__has_virtual_destructor'
-///                   '__is_abstract'                         [TODO]
-///                   '__is_class'
-///                   '__is_empty'                            [TODO]
-///                   '__is_enum'
-///                   '__is_final'
-///                   '__is_pod'
-///                   '__is_polymorphic'
-///                   '__is_sealed'                           [MS]
-///                   '__is_trivial'
-///                   '__is_union'
-///                   '__has_unique_object_representations'
-///
-/// [Clang] unary-type-trait:
-///                   '__is_aggregate'
-///                   '__trivially_copyable'
-///
-///       binary-type-trait:
-/// [GNU]             '__is_base_of'
-/// [MS]              '__is_convertible_to'
-///                   '__is_convertible'
-///                   '__is_same'
-///
-/// [Embarcadero] array-type-trait:
-///                   '__array_rank'
-///                   '__array_extent'
-///
-/// [Embarcadero] expression-trait:
-///                   '__is_lvalue_expr'
-///                   '__is_rvalue_expr'
-/// \endverbatim
-///
-ExprResult Parser::ParseCastExpression(bool isUnaryExpression,
-                                       bool isAddressOfOperand,
-                                       bool &NotCastExpr,
-                                       TypeCastState isTypeCast,
-                                       bool isVectorLiteral) {
-  ExprResult Res;
-  tok::TokenKind SavedKind = Tok.getKind();
-  NotCastExpr = false;
-
-  // This handles all of cast-expression, unary-expression, postfix-expression,
-  // and primary-expression.  We handle them together like this for efficiency
-  // and to simplify handling of an expression starting with a '(' token: which
-  // may be one of a parenthesized expression, cast-expression, compound literal
-  // expression, or statement expression.
-  //
-  // If the parsed tokens consist of a primary-expression, the cases below
-  // break out of the switch;  at the end we call ParsePostfixExpressionSuffix
-  // to handle the postfix expression suffixes.  Cases that cannot be followed
-  // by postfix exprs should return without invoking
-  // ParsePostfixExpressionSuffix.
-  switch (SavedKind) {
-  case tok::l_paren: {
-    // If this expression is limited to being a unary-expression, the parent can
-    // not start a cast expression.
-    ParenParseOption ParenExprType =
-        (isUnaryExpression && !getLangOpts().CPlusPlus) ? CompoundLiteral
-                                                        : CastExpr;
-    ParsedType CastTy;
-    SourceLocation RParenLoc;
-    Res = ParseParenExpression(ParenExprType, false/*stopIfCastExr*/,
-                               isTypeCast == IsTypeCast, CastTy, RParenLoc);
-
-    if (isVectorLiteral)
-        return Res;
-
-    switch (ParenExprType) {
-    case SimpleExpr:   break;    // Nothing else to do.
-    case CompoundStmt: break;  // Nothing else to do.
-    case CompoundLiteral:
-      // We parsed '(' type-name ')' '{' ... '}'.  If any suffixes of
-      // postfix-expression exist, parse them now.
-      break;
-    case CastExpr:
-      // We have parsed the cast-expression and no postfix-expr pieces are
-      // following.
-      return Res;
-    case FoldExpr:
-      // We only parsed a fold-expression. There might be postfix-expr pieces
-      // afterwards; parse them now.
-      break;
-    }
-
-    break;
-  }
-
-    // primary-expression
-  case tok::numeric_constant:
-    // constant: integer-constant
-    // constant: floating-constant
-
-    Res = Actions.ActOnNumericConstant(Tok, /*UDLScope*/getCurScope());
-    ConsumeToken();
-    break;
-
-  case tok::kw_true:
-  case tok::kw_false:
-    Res = ParseCXXBoolLiteral();
-    break;
-
-  case tok::kw___objc_yes:
-  case tok::kw___objc_no:
-      return ParseObjCBoolLiteral();
-
-  case tok::kw_nullptr:
-    Diag(Tok, diag::warn_cxx98_compat_nullptr);
-    return Actions.ActOnCXXNullPtrLiteral(ConsumeToken());
-
-  case tok::annot_primary_expr:
-    assert(Res.get() == nullptr && "Stray primary-expression annotation?");
-    Res = getExprAnnotation(Tok);
-    ConsumeAnnotationToken();
-    if (!Res.isInvalid() && Tok.is(tok::less))
-      checkPotentialAngleBracket(Res);
-    break;
-
-  case tok::kw___super:
-  case tok::kw_decltype:
-    // Annotate the token and tail recurse.
-    if (TryAnnotateTypeOrScopeToken())
-      return ExprError();
-    assert(Tok.isNot(tok::kw_decltype) && Tok.isNot(tok::kw___super));
-    return ParseCastExpression(isUnaryExpression, isAddressOfOperand);
-
-  case tok::identifier: {      // primary-expression: identifier
-                               // unqualified-id: identifier
-                               // constant: enumeration-constant
-    // Turn a potentially qualified name into a annot_typename or
-    // annot_cxxscope if it would be valid.  This handles things like x::y, etc.
-    if (getLangOpts().CPlusPlus) {
-      // Avoid the unnecessary parse-time lookup in the common case
-      // where the syntax forbids a type.
-      const Token &Next = NextToken();
-
-      // If this identifier was reverted from a token ID, and the next token
-      // is a parenthesis, this is likely to be a use of a type trait. Check
-      // those tokens.
-      if (Next.is(tok::l_paren) &&
-          Tok.is(tok::identifier) &&
-          Tok.getIdentifierInfo()->hasRevertedTokenIDToIdentifier()) {
-        IdentifierInfo *II = Tok.getIdentifierInfo();
-        // Build up the mapping of revertible type traits, for future use.
-        if (RevertibleTypeTraits.empty()) {
-#define RTT_JOIN(X,Y) X##Y
-#define REVERTIBLE_TYPE_TRAIT(Name)                         \
-          RevertibleTypeTraits[PP.getIdentifierInfo(#Name)] \
-            = RTT_JOIN(tok::kw_,Name)
-
-          REVERTIBLE_TYPE_TRAIT(__is_abstract);
-          REVERTIBLE_TYPE_TRAIT(__is_aggregate);
-          REVERTIBLE_TYPE_TRAIT(__is_arithmetic);
-          REVERTIBLE_TYPE_TRAIT(__is_array);
-          REVERTIBLE_TYPE_TRAIT(__is_assignable);
-          REVERTIBLE_TYPE_TRAIT(__is_base_of);
-          REVERTIBLE_TYPE_TRAIT(__is_class);
-          REVERTIBLE_TYPE_TRAIT(__is_complete_type);
-          REVERTIBLE_TYPE_TRAIT(__is_compound);
-          REVERTIBLE_TYPE_TRAIT(__is_const);
-          REVERTIBLE_TYPE_TRAIT(__is_constructible);
-          REVERTIBLE_TYPE_TRAIT(__is_convertible);
-          REVERTIBLE_TYPE_TRAIT(__is_convertible_to);
-          REVERTIBLE_TYPE_TRAIT(__is_destructible);
-          REVERTIBLE_TYPE_TRAIT(__is_empty);
-          REVERTIBLE_TYPE_TRAIT(__is_enum);
-          REVERTIBLE_TYPE_TRAIT(__is_floating_point);
-          REVERTIBLE_TYPE_TRAIT(__is_final);
-          REVERTIBLE_TYPE_TRAIT(__is_function);
-          REVERTIBLE_TYPE_TRAIT(__is_fundamental);
-          REVERTIBLE_TYPE_TRAIT(__is_integral);
-          REVERTIBLE_TYPE_TRAIT(__is_interface_class);
-          REVERTIBLE_TYPE_TRAIT(__is_literal);
-          REVERTIBLE_TYPE_TRAIT(__is_lvalue_expr);
-          REVERTIBLE_TYPE_TRAIT(__is_lvalue_reference);
-          REVERTIBLE_TYPE_TRAIT(__is_member_function_pointer);
-          REVERTIBLE_TYPE_TRAIT(__is_member_object_pointer);
-          REVERTIBLE_TYPE_TRAIT(__is_member_pointer);
-          REVERTIBLE_TYPE_TRAIT(__is_nothrow_assignable);
-          REVERTIBLE_TYPE_TRAIT(__is_nothrow_constructible);
-          REVERTIBLE_TYPE_TRAIT(__is_nothrow_destructible);
-          REVERTIBLE_TYPE_TRAIT(__is_object);
-          REVERTIBLE_TYPE_TRAIT(__is_pod);
-          REVERTIBLE_TYPE_TRAIT(__is_pointer);
-          REVERTIBLE_TYPE_TRAIT(__is_polymorphic);
-          REVERTIBLE_TYPE_TRAIT(__is_reference);
-          REVERTIBLE_TYPE_TRAIT(__is_rvalue_expr);
-          REVERTIBLE_TYPE_TRAIT(__is_rvalue_reference);
-          REVERTIBLE_TYPE_TRAIT(__is_same);
-          REVERTIBLE_TYPE_TRAIT(__is_scalar);
-          REVERTIBLE_TYPE_TRAIT(__is_sealed);
-          REVERTIBLE_TYPE_TRAIT(__is_signed);
-          REVERTIBLE_TYPE_TRAIT(__is_standard_layout);
-          REVERTIBLE_TYPE_TRAIT(__is_trivial);
-          REVERTIBLE_TYPE_TRAIT(__is_trivially_assignable);
-          REVERTIBLE_TYPE_TRAIT(__is_trivially_constructible);
-          REVERTIBLE_TYPE_TRAIT(__is_trivially_copyable);
-          REVERTIBLE_TYPE_TRAIT(__is_union);
-          REVERTIBLE_TYPE_TRAIT(__is_unsigned);
-          REVERTIBLE_TYPE_TRAIT(__is_void);
-          REVERTIBLE_TYPE_TRAIT(__is_volatile);
-#undef REVERTIBLE_TYPE_TRAIT
-#undef RTT_JOIN
-        }
-
-        // If we find that this is in fact the name of a type trait,
-        // update the token kind in place and parse again to treat it as
-        // the appropriate kind of type trait.
-        llvm::SmallDenseMap<IdentifierInfo *, tok::TokenKind>::iterator Known
-          = RevertibleTypeTraits.find(II);
-        if (Known != RevertibleTypeTraits.end()) {
-          Tok.setKind(Known->second);
-          return ParseCastExpression(isUnaryExpression, isAddressOfOperand,
-                                     NotCastExpr, isTypeCast);
-        }
-      }
-
-      if ((!ColonIsSacred && Next.is(tok::colon)) ||
-          Next.isOneOf(tok::coloncolon, tok::less, tok::l_paren,
-                       tok::l_brace)) {
-        // If TryAnnotateTypeOrScopeToken annotates the token, tail recurse.
-        if (TryAnnotateTypeOrScopeToken())
-          return ExprError();
-        if (!Tok.is(tok::identifier))
-          return ParseCastExpression(isUnaryExpression, isAddressOfOperand);
-      }
-    }
-
-    // Consume the identifier so that we can see if it is followed by a '(' or
-    // '.'.
-    IdentifierInfo &II = *Tok.getIdentifierInfo();
-    SourceLocation ILoc = ConsumeToken();
-
-    // Support 'Class.property' and 'super.property' notation.
-    if (getLangOpts().ObjC && Tok.is(tok::period) &&
-        (Actions.getTypeName(II, ILoc, getCurScope()) ||
-         // Allow the base to be 'super' if in an objc-method.
-         (&II == Ident_super && getCurScope()->isInObjcMethodScope()))) {
-      ConsumeToken();
-
-      if (Tok.is(tok::code_completion) && &II != Ident_super) {
-        Actions.CodeCompleteObjCClassPropertyRefExpr(
-            getCurScope(), II, ILoc, ExprStatementTokLoc == ILoc);
-        cutOffParsing();
-        return ExprError();
-      }
-      // Allow either an identifier or the keyword 'class' (in C++).
-      if (Tok.isNot(tok::identifier) &&
-          !(getLangOpts().CPlusPlus && Tok.is(tok::kw_class))) {
-        Diag(Tok, diag::err_expected_property_name);
-        return ExprError();
-      }
-      IdentifierInfo &PropertyName = *Tok.getIdentifierInfo();
-      SourceLocation PropertyLoc = ConsumeToken();
-
-      Res = Actions.ActOnClassPropertyRefExpr(II, PropertyName,
-                                              ILoc, PropertyLoc);
-      break;
-    }
-
-    // In an Objective-C method, if we have "super" followed by an identifier,
-    // the token sequence is ill-formed. However, if there's a ':' or ']' after
-    // that identifier, this is probably a message send with a missing open
-    // bracket. Treat it as such.
-    if (getLangOpts().ObjC && &II == Ident_super && !InMessageExpression &&
-        getCurScope()->isInObjcMethodScope() &&
-        ((Tok.is(tok::identifier) &&
-         (NextToken().is(tok::colon) || NextToken().is(tok::r_square))) ||
-         Tok.is(tok::code_completion))) {
-      Res = ParseObjCMessageExpressionBody(SourceLocation(), ILoc, nullptr,
-                                           nullptr);
-      break;
-    }
-
-    // If we have an Objective-C class name followed by an identifier
-    // and either ':' or ']', this is an Objective-C class message
-    // send that's missing the opening '['. Recovery
-    // appropriately. Also take this path if we're performing code
-    // completion after an Objective-C class name.
-    if (getLangOpts().ObjC &&
-        ((Tok.is(tok::identifier) && !InMessageExpression) ||
-         Tok.is(tok::code_completion))) {
-      const Token& Next = NextToken();
-      if (Tok.is(tok::code_completion) ||
-          Next.is(tok::colon) || Next.is(tok::r_square))
-        if (ParsedType Typ = Actions.getTypeName(II, ILoc, getCurScope()))
-          if (Typ.get()->isObjCObjectOrInterfaceType()) {
-            // Fake up a Declarator to use with ActOnTypeName.
-            DeclSpec DS(AttrFactory);
-            DS.SetRangeStart(ILoc);
-            DS.SetRangeEnd(ILoc);
-            const char *PrevSpec = nullptr;
-            unsigned DiagID;
-            DS.SetTypeSpecType(TST_typename, ILoc, PrevSpec, DiagID, Typ,
-                               Actions.getASTContext().getPrintingPolicy());
-
-            Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
-            TypeResult Ty = Actions.ActOnTypeName(getCurScope(),
-                                                  DeclaratorInfo);
-            if (Ty.isInvalid())
-              break;
-
-            Res = ParseObjCMessageExpressionBody(SourceLocation(),
-                                                 SourceLocation(),
-                                                 Ty.get(), nullptr);
-            break;
-          }
-    }
-
-    // Make sure to pass down the right value for isAddressOfOperand.
-    if (isAddressOfOperand && isPostfixExpressionSuffixStart())
-      isAddressOfOperand = false;
-
-    // Function designators are allowed to be undeclared (C99 6.5.1p2), so we
-    // need to know whether or not this identifier is a function designator or
-    // not.
-    UnqualifiedId Name;
-    CXXScopeSpec ScopeSpec;
-    SourceLocation TemplateKWLoc;
-    Token Replacement;
-    auto Validator = llvm::make_unique<CastExpressionIdValidator>(
-        Tok, isTypeCast != NotTypeCast, isTypeCast != IsTypeCast);
-    Validator->IsAddressOfOperand = isAddressOfOperand;
-    if (Tok.isOneOf(tok::periodstar, tok::arrowstar)) {
-      Validator->WantExpressionKeywords = false;
-      Validator->WantRemainingKeywords = false;
-    } else {
-      Validator->WantRemainingKeywords = Tok.isNot(tok::r_paren);
-    }
-    Name.setIdentifier(&II, ILoc);
-    Res = Actions.ActOnIdExpression(
-        getCurScope(), ScopeSpec, TemplateKWLoc, Name, Tok.is(tok::l_paren),
-        isAddressOfOperand, std::move(Validator),
-        /*IsInlineAsmIdentifier=*/false,
-        Tok.is(tok::r_paren) ? nullptr : &Replacement);
-    if (!Res.isInvalid() && Res.isUnset()) {
-      UnconsumeToken(Replacement);
-      return ParseCastExpression(isUnaryExpression, isAddressOfOperand,
-                                 NotCastExpr, isTypeCast);
-    }
-    if (!Res.isInvalid() && Tok.is(tok::less))
-      checkPotentialAngleBracket(Res);
-    break;
-  }
-  case tok::char_constant:     // constant: character-constant
-  case tok::wide_char_constant:
-  case tok::utf8_char_constant:
-  case tok::utf16_char_constant:
-  case tok::utf32_char_constant:
-    Res = Actions.ActOnCharacterConstant(Tok, /*UDLScope*/getCurScope());
-    ConsumeToken();
-    break;
-  case tok::kw___func__:       // primary-expression: __func__ [C99 6.4.2.2]
-  case tok::kw___FUNCTION__:   // primary-expression: __FUNCTION__ [GNU]
-  case tok::kw___FUNCDNAME__:   // primary-expression: __FUNCDNAME__ [MS]
-  case tok::kw___FUNCSIG__:     // primary-expression: __FUNCSIG__ [MS]
-  case tok::kw_L__FUNCTION__:   // primary-expression: L__FUNCTION__ [MS]
-  case tok::kw_L__FUNCSIG__:    // primary-expression: L__FUNCSIG__ [MS]
-  case tok::kw___PRETTY_FUNCTION__:  // primary-expression: __P..Y_F..N__ [GNU]
-    Res = Actions.ActOnPredefinedExpr(Tok.getLocation(), SavedKind);
-    ConsumeToken();
-    break;
-  case tok::string_literal:    // primary-expression: string-literal
-  case tok::wide_string_literal:
-  case tok::utf8_string_literal:
-  case tok::utf16_string_literal:
-  case tok::utf32_string_literal:
-    Res = ParseStringLiteralExpression(true);
-    break;
-  case tok::kw__Generic:   // primary-expression: generic-selection [C11 6.5.1]
-    Res = ParseGenericSelectionExpression();
-    break;
-  case tok::kw___builtin_available:
-    return ParseAvailabilityCheckExpr(Tok.getLocation());
-  case tok::kw___builtin_va_arg:
-  case tok::kw___builtin_offsetof:
-  case tok::kw___builtin_choose_expr:
-  case tok::kw___builtin_astype: // primary-expression: [OCL] as_type()
-  case tok::kw___builtin_convertvector:
-    return ParseBuiltinPrimaryExpression();
-  case tok::kw___null:
-    return Actions.ActOnGNUNullExpr(ConsumeToken());
-
-  case tok::plusplus:      // unary-expression: '++' unary-expression [C99]
-  case tok::minusminus: {  // unary-expression: '--' unary-expression [C99]
-    // C++ [expr.unary] has:
-    //   unary-expression:
-    //     ++ cast-expression
-    //     -- cast-expression
-    Token SavedTok = Tok;
-    ConsumeToken();
-    // One special case is implicitly handled here: if the preceding tokens are
-    // an ambiguous cast expression, such as "(T())++", then we recurse to
-    // determine whether the '++' is prefix or postfix.
-    Res = ParseCastExpression(!getLangOpts().CPlusPlus,
-                              /*isAddressOfOperand*/false, NotCastExpr,
-                              NotTypeCast);
-    if (NotCastExpr) {
-      // If we return with NotCastExpr = true, we must not consume any tokens,
-      // so put the token back where we found it.
-      assert(Res.isInvalid());
-      UnconsumeToken(SavedTok);
-      return ExprError();
-    }
-    if (!Res.isInvalid())
-      Res = Actions.ActOnUnaryOp(getCurScope(), SavedTok.getLocation(),
-                                 SavedKind, Res.get());
-    return Res;
-  }
-  case tok::amp: {         // unary-expression: '&' cast-expression
-    // Special treatment because of member pointers
-    SourceLocation SavedLoc = ConsumeToken();
-    Res = ParseCastExpression(false, true);
-    if (!Res.isInvalid())
-      Res = Actions.ActOnUnaryOp(getCurScope(), SavedLoc, SavedKind, Res.get());
-    return Res;
-  }
-
-  case tok::star:          // unary-expression: '*' cast-expression
-  case tok::plus:          // unary-expression: '+' cast-expression
-  case tok::minus:         // unary-expression: '-' cast-expression
-  case tok::tilde:         // unary-expression: '~' cast-expression
-  case tok::exclaim:       // unary-expression: '!' cast-expression
-  case tok::kw___real:     // unary-expression: '__real' cast-expression [GNU]
-  case tok::kw___imag: {   // unary-expression: '__imag' cast-expression [GNU]
-    SourceLocation SavedLoc = ConsumeToken();
-    Res = ParseCastExpression(false);
-    if (!Res.isInvalid())
-      Res = Actions.ActOnUnaryOp(getCurScope(), SavedLoc, SavedKind, Res.get());
-    return Res;
-  }
-
-  case tok::kw_co_await: {  // unary-expression: 'co_await' cast-expression
-    SourceLocation CoawaitLoc = ConsumeToken();
-    Res = ParseCastExpression(false);
-    if (!Res.isInvalid())
-      Res = Actions.ActOnCoawaitExpr(getCurScope(), CoawaitLoc, Res.get());
-    return Res;
-  }
-
-  case tok::kw___extension__:{//unary-expression:'__extension__' cast-expr [GNU]
-    // __extension__ silences extension warnings in the subexpression.
-    ExtensionRAIIObject O(Diags);  // Use RAII to do this.
-    SourceLocation SavedLoc = ConsumeToken();
-    Res = ParseCastExpression(false);
-    if (!Res.isInvalid())
-      Res = Actions.ActOnUnaryOp(getCurScope(), SavedLoc, SavedKind, Res.get());
-    return Res;
-  }
-  case tok::kw__Alignof:   // unary-expression: '_Alignof' '(' type-name ')'
-    if (!getLangOpts().C11)
-      Diag(Tok, diag::ext_c11_alignment) << Tok.getName();
-    LLVM_FALLTHROUGH;
-  case tok::kw_alignof:    // unary-expression: 'alignof' '(' type-id ')'
-  case tok::kw___alignof:  // unary-expression: '__alignof' unary-expression
-                           // unary-expression: '__alignof' '(' type-name ')'
-  case tok::kw_sizeof:     // unary-expression: 'sizeof' unary-expression
-                           // unary-expression: 'sizeof' '(' type-name ')'
-  case tok::kw_vec_step:   // unary-expression: OpenCL 'vec_step' expression
-  // unary-expression: '__builtin_omp_required_simd_align' '(' type-name ')'
-  case tok::kw___builtin_omp_required_simd_align:
-    return ParseUnaryExprOrTypeTraitExpression();
-  case tok::ampamp: {      // unary-expression: '&&' identifier
-    SourceLocation AmpAmpLoc = ConsumeToken();
-    if (Tok.isNot(tok::identifier))
-      return ExprError(Diag(Tok, diag::err_expected) << tok::identifier);
-
-    if (getCurScope()->getFnParent() == nullptr)
-      return ExprError(Diag(Tok, diag::err_address_of_label_outside_fn));
-
-    Diag(AmpAmpLoc, diag::ext_gnu_address_of_label);
-    LabelDecl *LD = Actions.LookupOrCreateLabel(Tok.getIdentifierInfo(),
-                                                Tok.getLocation());
-    Res = Actions.ActOnAddrLabel(AmpAmpLoc, Tok.getLocation(), LD);
-    ConsumeToken();
-    return Res;
-  }
-  case tok::kw_const_cast:
-  case tok::kw_dynamic_cast:
-  case tok::kw_reinterpret_cast:
-  case tok::kw_static_cast:
-    Res = ParseCXXCasts();
-    break;
-  case tok::kw_typeid:
-    Res = ParseCXXTypeid();
-    break;
-  case tok::kw___uuidof:
-    Res = ParseCXXUuidof();
-    break;
-  case tok::kw_this:
-    Res = ParseCXXThis();
-    break;
-
-  case tok::annot_typename:
-    if (isStartOfObjCClassMessageMissingOpenBracket()) {
-      ParsedType Type = getTypeAnnotation(Tok);
-
-      // Fake up a Declarator to use with ActOnTypeName.
-      DeclSpec DS(AttrFactory);
-      DS.SetRangeStart(Tok.getLocation());
-      DS.SetRangeEnd(Tok.getLastLoc());
-
-      const char *PrevSpec = nullptr;
-      unsigned DiagID;
-      DS.SetTypeSpecType(TST_typename, Tok.getAnnotationEndLoc(),
-                         PrevSpec, DiagID, Type,
-                         Actions.getASTContext().getPrintingPolicy());
-
-      Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
-      TypeResult Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
-      if (Ty.isInvalid())
-        break;
-
-      ConsumeAnnotationToken();
-      Res = ParseObjCMessageExpressionBody(SourceLocation(), SourceLocation(),
-                                           Ty.get(), nullptr);
-      break;
-    }
-    LLVM_FALLTHROUGH;
-
-  case tok::annot_decltype:
-  case tok::kw_char:
-  case tok::kw_wchar_t:
-  case tok::kw_char8_t:
-  case tok::kw_char16_t:
-  case tok::kw_char32_t:
-  case tok::kw_bool:
-  case tok::kw_short:
-  case tok::kw_int:
-  case tok::kw_long:
-  case tok::kw___int64:
-  case tok::kw___int128:
-  case tok::kw_signed:
-  case tok::kw_unsigned:
-  case tok::kw_half:
-  case tok::kw_float:
-  case tok::kw_double:
-  case tok::kw__Float16:
-  case tok::kw___float128:
-  case tok::kw_void:
-  case tok::kw_typename:
-  case tok::kw_typeof:
-  case tok::kw___vector:
-#define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
-#include "clang/Basic/OpenCLImageTypes.def"
-  {
-    if (!getLangOpts().CPlusPlus) {
-      Diag(Tok, diag::err_expected_expression);
-      return ExprError();
-    }
-
-    if (SavedKind == tok::kw_typename) {
-      // postfix-expression: typename-specifier '(' expression-list[opt] ')'
-      //                     typename-specifier braced-init-list
-      if (TryAnnotateTypeOrScopeToken())
-        return ExprError();
-
-      if (!Actions.isSimpleTypeSpecifier(Tok.getKind()))
-        // We are trying to parse a simple-type-specifier but might not get such
-        // a token after error recovery.
-        return ExprError();
-    }
-
-    // postfix-expression: simple-type-specifier '(' expression-list[opt] ')'
-    //                     simple-type-specifier braced-init-list
-    //
-    DeclSpec DS(AttrFactory);
-
-    ParseCXXSimpleTypeSpecifier(DS);
-    if (Tok.isNot(tok::l_paren) &&
-        (!getLangOpts().CPlusPlus11 || Tok.isNot(tok::l_brace)))
-      return ExprError(Diag(Tok, diag::err_expected_lparen_after_type)
-                         << DS.getSourceRange());
-
-    if (Tok.is(tok::l_brace))
-      Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
-
-    Res = ParseCXXTypeConstructExpression(DS);
-    break;
-  }
-
-  case tok::annot_cxxscope: { // [C++] id-expression: qualified-id
-    // If TryAnnotateTypeOrScopeToken annotates the token, tail recurse.
-    // (We can end up in this situation after tentative parsing.)
-    if (TryAnnotateTypeOrScopeToken())
-      return ExprError();
-    if (!Tok.is(tok::annot_cxxscope))
-      return ParseCastExpression(isUnaryExpression, isAddressOfOperand,
-                                 NotCastExpr, isTypeCast);
-
-    Token Next = NextToken();
-    if (Next.is(tok::annot_template_id)) {
-      TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Next);
-      if (TemplateId->Kind == TNK_Type_template) {
-        // We have a qualified template-id that we know refers to a
-        // type, translate it into a type and continue parsing as a
-        // cast expression.
-        CXXScopeSpec SS;
-        ParseOptionalCXXScopeSpecifier(SS, nullptr,
-                                       /*EnteringContext=*/false);
-        AnnotateTemplateIdTokenAsType();
-        return ParseCastExpression(isUnaryExpression, isAddressOfOperand,
-                                   NotCastExpr, isTypeCast);
-      }
-    }
-
-    // Parse as an id-expression.
-    Res = ParseCXXIdExpression(isAddressOfOperand);
-    break;
-  }
-
-  case tok::annot_template_id: { // [C++]          template-id
-    TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
-    if (TemplateId->Kind == TNK_Type_template) {
-      // We have a template-id that we know refers to a type,
-      // translate it into a type and continue parsing as a cast
-      // expression.
-      AnnotateTemplateIdTokenAsType();
-      return ParseCastExpression(isUnaryExpression, isAddressOfOperand,
-                                 NotCastExpr, isTypeCast);
-    }
-
-    // Fall through to treat the template-id as an id-expression.
-    LLVM_FALLTHROUGH;
-  }
-
-  case tok::kw_operator: // [C++] id-expression: operator/conversion-function-id
-    Res = ParseCXXIdExpression(isAddressOfOperand);
-    break;
-
-  case tok::coloncolon: {
-    // ::foo::bar -> global qualified name etc.   If TryAnnotateTypeOrScopeToken
-    // annotates the token, tail recurse.
-    if (TryAnnotateTypeOrScopeToken())
-      return ExprError();
-    if (!Tok.is(tok::coloncolon))
-      return ParseCastExpression(isUnaryExpression, isAddressOfOperand);
-
-    // ::new -> [C++] new-expression
-    // ::delete -> [C++] delete-expression
-    SourceLocation CCLoc = ConsumeToken();
-    if (Tok.is(tok::kw_new))
-      return ParseCXXNewExpression(true, CCLoc);
-    if (Tok.is(tok::kw_delete))
-      return ParseCXXDeleteExpression(true, CCLoc);
-
-    // This is not a type name or scope specifier, it is an invalid expression.
-    Diag(CCLoc, diag::err_expected_expression);
-    return ExprError();
-  }
-
-  case tok::kw_new: // [C++] new-expression
-    return ParseCXXNewExpression(false, Tok.getLocation());
-
-  case tok::kw_delete: // [C++] delete-expression
-    return ParseCXXDeleteExpression(false, Tok.getLocation());
-
-  case tok::kw_noexcept: { // [C++0x] 'noexcept' '(' expression ')'
-    Diag(Tok, diag::warn_cxx98_compat_noexcept_expr);
-    SourceLocation KeyLoc = ConsumeToken();
-    BalancedDelimiterTracker T(*this, tok::l_paren);
-
-    if (T.expectAndConsume(diag::err_expected_lparen_after, "noexcept"))
-      return ExprError();
-    // C++11 [expr.unary.noexcept]p1:
-    //   The noexcept operator determines whether the evaluation of its operand,
-    //   which is an unevaluated operand, can throw an exception.
-    EnterExpressionEvaluationContext Unevaluated(
-        Actions, Sema::ExpressionEvaluationContext::Unevaluated);
-    ExprResult Result = ParseExpression();
-
-    T.consumeClose();
-
-    if (!Result.isInvalid())
-      Result = Actions.ActOnNoexceptExpr(KeyLoc, T.getOpenLocation(),
-                                         Result.get(), T.getCloseLocation());
-    return Result;
-  }
-
-#define TYPE_TRAIT(N,Spelling,K) \
-  case tok::kw_##Spelling:
-#include "clang/Basic/TokenKinds.def"
-    return ParseTypeTrait();
-
-  case tok::kw___array_rank:
-  case tok::kw___array_extent:
-    return ParseArrayTypeTrait();
-
-  case tok::kw___is_lvalue_expr:
-  case tok::kw___is_rvalue_expr:
-    return ParseExpressionTrait();
-
-  case tok::at: {
-    SourceLocation AtLoc = ConsumeToken();
-    return ParseObjCAtExpression(AtLoc);
-  }
-  case tok::caret:
-    Res = ParseBlockLiteralExpression();
-    break;
-  case tok::code_completion: {
-    Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Expression);
-    cutOffParsing();
-    return ExprError();
-  }
-  case tok::l_square:
-    if (getLangOpts().CPlusPlus11) {
-      if (getLangOpts().ObjC) {
-        // C++11 lambda expressions and Objective-C message sends both start with a
-        // square bracket.  There are three possibilities here:
-        // we have a valid lambda expression, we have an invalid lambda
-        // expression, or we have something that doesn't appear to be a lambda.
-        // If we're in the last case, we fall back to ParseObjCMessageExpression.
-        Res = TryParseLambdaExpression();
-        if (!Res.isInvalid() && !Res.get())
-          Res = ParseObjCMessageExpression();
-        break;
-      }
-      Res = ParseLambdaExpression();
-      break;
-    }
-    if (getLangOpts().ObjC) {
-      Res = ParseObjCMessageExpression();
-      break;
-    }
-    LLVM_FALLTHROUGH;
-  default:
-    NotCastExpr = true;
-    return ExprError();
-  }
-
-  // Check to see whether Res is a function designator only. If it is and we
-  // are compiling for OpenCL, we need to return an error as this implies
-  // that the address of the function is being taken, which is illegal in CL.
-
-  // These can be followed by postfix-expr pieces.
-  Res = ParsePostfixExpressionSuffix(Res);
-  if (getLangOpts().OpenCL)
-    if (Expr *PostfixExpr = Res.get()) {
-      QualType Ty = PostfixExpr->getType();
-      if (!Ty.isNull() && Ty->isFunctionType()) {
-        Diag(PostfixExpr->getExprLoc(),
-             diag::err_opencl_taking_function_address_parser);
-        return ExprError();
-      }
-    }
-
-  return Res;
-}
-
-/// Once the leading part of a postfix-expression is parsed, this
-/// method parses any suffixes that apply.
-///
-/// \verbatim
-///       postfix-expression: [C99 6.5.2]
-///         primary-expression
-///         postfix-expression '[' expression ']'
-///         postfix-expression '[' braced-init-list ']'
-///         postfix-expression '(' argument-expression-list[opt] ')'
-///         postfix-expression '.' identifier
-///         postfix-expression '->' identifier
-///         postfix-expression '++'
-///         postfix-expression '--'
-///         '(' type-name ')' '{' initializer-list '}'
-///         '(' type-name ')' '{' initializer-list ',' '}'
-///
-///       argument-expression-list: [C99 6.5.2]
-///         argument-expression ...[opt]
-///         argument-expression-list ',' assignment-expression ...[opt]
-/// \endverbatim
-ExprResult
-Parser::ParsePostfixExpressionSuffix(ExprResult LHS) {
-  // Now that the primary-expression piece of the postfix-expression has been
-  // parsed, see if there are any postfix-expression pieces here.
-  SourceLocation Loc;
-  while (1) {
-    switch (Tok.getKind()) {
-    case tok::code_completion:
-      if (InMessageExpression)
-        return LHS;
-
-      Actions.CodeCompletePostfixExpression(getCurScope(), LHS);
-      cutOffParsing();
-      return ExprError();
-
-    case tok::identifier:
-      // If we see identifier: after an expression, and we're not already in a
-      // message send, then this is probably a message send with a missing
-      // opening bracket '['.
-      if (getLangOpts().ObjC && !InMessageExpression &&
-          (NextToken().is(tok::colon) || NextToken().is(tok::r_square))) {
-        LHS = ParseObjCMessageExpressionBody(SourceLocation(), SourceLocation(),
-                                             nullptr, LHS.get());
-        break;
-      }
-      // Fall through; this isn't a message send.
-      LLVM_FALLTHROUGH;
-
-    default:  // Not a postfix-expression suffix.
-      return LHS;
-    case tok::l_square: {  // postfix-expression: p-e '[' expression ']'
-      // If we have a array postfix expression that starts on a new line and
-      // Objective-C is enabled, it is highly likely that the user forgot a
-      // semicolon after the base expression and that the array postfix-expr is
-      // actually another message send.  In this case, do some look-ahead to see
-      // if the contents of the square brackets are obviously not a valid
-      // expression and recover by pretending there is no suffix.
-      if (getLangOpts().ObjC && Tok.isAtStartOfLine() &&
-          isSimpleObjCMessageExpression())
-        return LHS;
-
-      // Reject array indices starting with a lambda-expression. '[[' is
-      // reserved for attributes.
-      if (CheckProhibitedCXX11Attribute()) {
-        (void)Actions.CorrectDelayedTyposInExpr(LHS);
-        return ExprError();
-      }
-
-      BalancedDelimiterTracker T(*this, tok::l_square);
-      T.consumeOpen();
-      Loc = T.getOpenLocation();
-      ExprResult Idx, Length;
-      SourceLocation ColonLoc;
-      if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
-        Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
-        Idx = ParseBraceInitializer();
-      } else if (getLangOpts().OpenMP) {
-        ColonProtectionRAIIObject RAII(*this);
-        // Parse [: or [ expr or [ expr :
-        if (!Tok.is(tok::colon)) {
-          // [ expr
-          Idx = ParseExpression();
-        }
-        if (Tok.is(tok::colon)) {
-          // Consume ':'
-          ColonLoc = ConsumeToken();
-          if (Tok.isNot(tok::r_square))
-            Length = ParseExpression();
-        }
-      } else
-        Idx = ParseExpression();
-
-      SourceLocation RLoc = Tok.getLocation();
-
-      ExprResult OrigLHS = LHS;
-      if (!LHS.isInvalid() && !Idx.isInvalid() && !Length.isInvalid() &&
-          Tok.is(tok::r_square)) {
-        if (ColonLoc.isValid()) {
-          LHS = Actions.ActOnOMPArraySectionExpr(LHS.get(), Loc, Idx.get(),
-                                                 ColonLoc, Length.get(), RLoc);
-        } else {
-          LHS = Actions.ActOnArraySubscriptExpr(getCurScope(), LHS.get(), Loc,
-                                                Idx.get(), RLoc);
-        }
-      } else {
-        LHS = ExprError();
-      }
-      if (LHS.isInvalid()) {
-        (void)Actions.CorrectDelayedTyposInExpr(OrigLHS);
-        (void)Actions.CorrectDelayedTyposInExpr(Idx);
-        (void)Actions.CorrectDelayedTyposInExpr(Length);
-        LHS = ExprError();
-        Idx = ExprError();
-      }
-
-      // Match the ']'.
-      T.consumeClose();
-      break;
-    }
-
-    case tok::l_paren:         // p-e: p-e '(' argument-expression-list[opt] ')'
-    case tok::lesslessless: {  // p-e: p-e '<<<' argument-expression-list '>>>'
-                               //   '(' argument-expression-list[opt] ')'
-      tok::TokenKind OpKind = Tok.getKind();
-      InMessageExpressionRAIIObject InMessage(*this, false);
-
-      Expr *ExecConfig = nullptr;
-
-      BalancedDelimiterTracker PT(*this, tok::l_paren);
-
-      if (OpKind == tok::lesslessless) {
-        ExprVector ExecConfigExprs;
-        CommaLocsTy ExecConfigCommaLocs;
-        SourceLocation OpenLoc = ConsumeToken();
-
-        if (ParseSimpleExpressionList(ExecConfigExprs, ExecConfigCommaLocs)) {
-          (void)Actions.CorrectDelayedTyposInExpr(LHS);
-          LHS = ExprError();
-        }
-
-        SourceLocation CloseLoc;
-        if (TryConsumeToken(tok::greatergreatergreater, CloseLoc)) {
-        } else if (LHS.isInvalid()) {
-          SkipUntil(tok::greatergreatergreater, StopAtSemi);
-        } else {
-          // There was an error closing the brackets
-          Diag(Tok, diag::err_expected) << tok::greatergreatergreater;
-          Diag(OpenLoc, diag::note_matching) << tok::lesslessless;
-          SkipUntil(tok::greatergreatergreater, StopAtSemi);
-          LHS = ExprError();
-        }
-
-        if (!LHS.isInvalid()) {
-          if (ExpectAndConsume(tok::l_paren))
-            LHS = ExprError();
-          else
-            Loc = PrevTokLocation;
-        }
-
-        if (!LHS.isInvalid()) {
-          ExprResult ECResult = Actions.ActOnCUDAExecConfigExpr(getCurScope(),
-                                    OpenLoc,
-                                    ExecConfigExprs,
-                                    CloseLoc);
-          if (ECResult.isInvalid())
-            LHS = ExprError();
-          else
-            ExecConfig = ECResult.get();
-        }
-      } else {
-        PT.consumeOpen();
-        Loc = PT.getOpenLocation();
-      }
-
-      ExprVector ArgExprs;
-      CommaLocsTy CommaLocs;
-
-      if (Tok.is(tok::code_completion)) {
-        QualType PreferredType = Actions.ProduceCallSignatureHelp(
-            getCurScope(), LHS.get(), None, PT.getOpenLocation());
-        CalledSignatureHelp = true;
-        Actions.CodeCompleteExpression(getCurScope(), PreferredType);
-        cutOffParsing();
-        return ExprError();
-      }
-
-      if (OpKind == tok::l_paren || !LHS.isInvalid()) {
-        if (Tok.isNot(tok::r_paren)) {
-          if (ParseExpressionList(ArgExprs, CommaLocs, [&] {
-                QualType PreferredType = Actions.ProduceCallSignatureHelp(
-                    getCurScope(), LHS.get(), ArgExprs, PT.getOpenLocation());
-                CalledSignatureHelp = true;
-                Actions.CodeCompleteExpression(getCurScope(), PreferredType);
-              })) {
-            (void)Actions.CorrectDelayedTyposInExpr(LHS);
-            // If we got an error when parsing expression list, we don't call
-            // the CodeCompleteCall handler inside the parser. So call it here
-            // to make sure we get overload suggestions even when we are in the
-            // middle of a parameter.
-            if (PP.isCodeCompletionReached() && !CalledSignatureHelp) {
-              Actions.ProduceCallSignatureHelp(getCurScope(), LHS.get(),
-                                               ArgExprs, PT.getOpenLocation());
-              CalledSignatureHelp = true;
-            }
-            LHS = ExprError();
-          } else if (LHS.isInvalid()) {
-            for (auto &E : ArgExprs)
-              Actions.CorrectDelayedTyposInExpr(E);
-          }
-        }
-      }
-
-      // Match the ')'.
-      if (LHS.isInvalid()) {
-        SkipUntil(tok::r_paren, StopAtSemi);
-      } else if (Tok.isNot(tok::r_paren)) {
-        bool HadDelayedTypo = false;
-        if (Actions.CorrectDelayedTyposInExpr(LHS).get() != LHS.get())
-          HadDelayedTypo = true;
-        for (auto &E : ArgExprs)
-          if (Actions.CorrectDelayedTyposInExpr(E).get() != E)
-            HadDelayedTypo = true;
-        // If there were delayed typos in the LHS or ArgExprs, call SkipUntil
-        // instead of PT.consumeClose() to avoid emitting extra diagnostics for
-        // the unmatched l_paren.
-        if (HadDelayedTypo)
-          SkipUntil(tok::r_paren, StopAtSemi);
-        else
-          PT.consumeClose();
-        LHS = ExprError();
-      } else {
-        assert((ArgExprs.size() == 0 ||
-                ArgExprs.size()-1 == CommaLocs.size())&&
-               "Unexpected number of commas!");
-        LHS = Actions.ActOnCallExpr(getCurScope(), LHS.get(), Loc,
-                                    ArgExprs, Tok.getLocation(),
-                                    ExecConfig);
-        PT.consumeClose();
-      }
-
-      break;
-    }
-    case tok::arrow:
-    case tok::period: {
-      // postfix-expression: p-e '->' template[opt] id-expression
-      // postfix-expression: p-e '.' template[opt] id-expression
-      tok::TokenKind OpKind = Tok.getKind();
-      SourceLocation OpLoc = ConsumeToken();  // Eat the "." or "->" token.
-
-      CXXScopeSpec SS;
-      ParsedType ObjectType;
-      bool MayBePseudoDestructor = false;
-      Expr* OrigLHS = !LHS.isInvalid() ? LHS.get() : nullptr;
-
-      if (getLangOpts().CPlusPlus && !LHS.isInvalid()) {
-        Expr *Base = OrigLHS;
-        const Type* BaseType = Base->getType().getTypePtrOrNull();
-        if (BaseType && Tok.is(tok::l_paren) &&
-            (BaseType->isFunctionType() ||
-             BaseType->isSpecificPlaceholderType(BuiltinType::BoundMember))) {
-          Diag(OpLoc, diag::err_function_is_not_record)
-              << OpKind << Base->getSourceRange()
-              << FixItHint::CreateRemoval(OpLoc);
-          return ParsePostfixExpressionSuffix(Base);
-        }
-
-        LHS = Actions.ActOnStartCXXMemberReference(getCurScope(), Base,
-                                                   OpLoc, OpKind, ObjectType,
-                                                   MayBePseudoDestructor);
-        if (LHS.isInvalid())
-          break;
-
-        ParseOptionalCXXScopeSpecifier(SS, ObjectType,
-                                       /*EnteringContext=*/false,
-                                       &MayBePseudoDestructor);
-        if (SS.isNotEmpty())
-          ObjectType = nullptr;
-      }
-
-      if (Tok.is(tok::code_completion)) {
-        tok::TokenKind CorrectedOpKind =
-            OpKind == tok::arrow ? tok::period : tok::arrow;
-        ExprResult CorrectedLHS(/*IsInvalid=*/true);
-        if (getLangOpts().CPlusPlus && OrigLHS) {
-          const bool DiagsAreSuppressed = Diags.getSuppressAllDiagnostics();
-          Diags.setSuppressAllDiagnostics(true);
-          CorrectedLHS = Actions.ActOnStartCXXMemberReference(
-              getCurScope(), OrigLHS, OpLoc, CorrectedOpKind, ObjectType,
-              MayBePseudoDestructor);
-          Diags.setSuppressAllDiagnostics(DiagsAreSuppressed);
-        }
-
-        Expr *Base = LHS.get();
-        Expr *CorrectedBase = CorrectedLHS.get();
-        if (!CorrectedBase && !getLangOpts().CPlusPlus)
-          CorrectedBase = Base;
-
-        // Code completion for a member access expression.
-        Actions.CodeCompleteMemberReferenceExpr(
-            getCurScope(), Base, CorrectedBase, OpLoc, OpKind == tok::arrow,
-            Base && ExprStatementTokLoc == Base->getBeginLoc());
-
-        cutOffParsing();
-        return ExprError();
-      }
-
-      if (MayBePseudoDestructor && !LHS.isInvalid()) {
-        LHS = ParseCXXPseudoDestructor(LHS.get(), OpLoc, OpKind, SS,
-                                       ObjectType);
-        break;
-      }
-
-      // Either the action has told us that this cannot be a
-      // pseudo-destructor expression (based on the type of base
-      // expression), or we didn't see a '~' in the right place. We
-      // can still parse a destructor name here, but in that case it
-      // names a real destructor.
-      // Allow explicit constructor calls in Microsoft mode.
-      // FIXME: Add support for explicit call of template constructor.
-      SourceLocation TemplateKWLoc;
-      UnqualifiedId Name;
-      if (getLangOpts().ObjC && OpKind == tok::period &&
-          Tok.is(tok::kw_class)) {
-        // Objective-C++:
-        //   After a '.' in a member access expression, treat the keyword
-        //   'class' as if it were an identifier.
-        //
-        // This hack allows property access to the 'class' method because it is
-        // such a common method name. For other C++ keywords that are
-        // Objective-C method names, one must use the message send syntax.
-        IdentifierInfo *Id = Tok.getIdentifierInfo();
-        SourceLocation Loc = ConsumeToken();
-        Name.setIdentifier(Id, Loc);
-      } else if (ParseUnqualifiedId(SS,
-                                    /*EnteringContext=*/false,
-                                    /*AllowDestructorName=*/true,
-                                    /*AllowConstructorName=*/
-                                    getLangOpts().MicrosoftExt &&
-                                        SS.isNotEmpty(),
-                                    /*AllowDeductionGuide=*/false,
-                                    ObjectType, &TemplateKWLoc, Name)) {
-        (void)Actions.CorrectDelayedTyposInExpr(LHS);
-        LHS = ExprError();
-      }
-
-      if (!LHS.isInvalid())
-        LHS = Actions.ActOnMemberAccessExpr(getCurScope(), LHS.get(), OpLoc,
-                                            OpKind, SS, TemplateKWLoc, Name,
-                                 CurParsedObjCImpl ? CurParsedObjCImpl->Dcl
-                                                   : nullptr);
-      if (!LHS.isInvalid() && Tok.is(tok::less))
-        checkPotentialAngleBracket(LHS);
-      break;
-    }
-    case tok::plusplus:    // postfix-expression: postfix-expression '++'
-    case tok::minusminus:  // postfix-expression: postfix-expression '--'
-      if (!LHS.isInvalid()) {
-        LHS = Actions.ActOnPostfixUnaryOp(getCurScope(), Tok.getLocation(),
-                                          Tok.getKind(), LHS.get());
-      }
-      ConsumeToken();
-      break;
-    }
-  }
-}
-
-/// ParseExprAfterUnaryExprOrTypeTrait - We parsed a typeof/sizeof/alignof/
-/// vec_step and we are at the start of an expression or a parenthesized
-/// type-id. OpTok is the operand token (typeof/sizeof/alignof). Returns the
-/// expression (isCastExpr == false) or the type (isCastExpr == true).
-///
-/// \verbatim
-///       unary-expression:  [C99 6.5.3]
-///         'sizeof' unary-expression
-///         'sizeof' '(' type-name ')'
-/// [GNU]   '__alignof' unary-expression
-/// [GNU]   '__alignof' '(' type-name ')'
-/// [C11]   '_Alignof' '(' type-name ')'
-/// [C++0x] 'alignof' '(' type-id ')'
-///
-/// [GNU]   typeof-specifier:
-///           typeof ( expressions )
-///           typeof ( type-name )
-/// [GNU/C++] typeof unary-expression
-///
-/// [OpenCL 1.1 6.11.12] vec_step built-in function:
-///           vec_step ( expressions )
-///           vec_step ( type-name )
-/// \endverbatim
-ExprResult
-Parser::ParseExprAfterUnaryExprOrTypeTrait(const Token &OpTok,
-                                           bool &isCastExpr,
-                                           ParsedType &CastTy,
-                                           SourceRange &CastRange) {
-
-  assert(OpTok.isOneOf(tok::kw_typeof, tok::kw_sizeof, tok::kw___alignof,
-                       tok::kw_alignof, tok::kw__Alignof, tok::kw_vec_step,
-                       tok::kw___builtin_omp_required_simd_align) &&
-         "Not a typeof/sizeof/alignof/vec_step expression!");
-
-  ExprResult Operand;
-
-  // If the operand doesn't start with an '(', it must be an expression.
-  if (Tok.isNot(tok::l_paren)) {
-    // If construct allows a form without parenthesis, user may forget to put
-    // pathenthesis around type name.
-    if (OpTok.isOneOf(tok::kw_sizeof, tok::kw___alignof, tok::kw_alignof,
-                      tok::kw__Alignof)) {
-      if (isTypeIdUnambiguously()) {
-        DeclSpec DS(AttrFactory);
-        ParseSpecifierQualifierList(DS);
-        Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
-        ParseDeclarator(DeclaratorInfo);
-
-        SourceLocation LParenLoc = PP.getLocForEndOfToken(OpTok.getLocation());
-        SourceLocation RParenLoc = PP.getLocForEndOfToken(PrevTokLocation);
-        Diag(LParenLoc, diag::err_expected_parentheses_around_typename)
-          << OpTok.getName()
-          << FixItHint::CreateInsertion(LParenLoc, "(")
-          << FixItHint::CreateInsertion(RParenLoc, ")");
-        isCastExpr = true;
-        return ExprEmpty();
-      }
-    }
-
-    isCastExpr = false;
-    if (OpTok.is(tok::kw_typeof) && !getLangOpts().CPlusPlus) {
-      Diag(Tok, diag::err_expected_after) << OpTok.getIdentifierInfo()
-                                          << tok::l_paren;
-      return ExprError();
-    }
-
-    Operand = ParseCastExpression(true/*isUnaryExpression*/);
-  } else {
-    // If it starts with a '(', we know that it is either a parenthesized
-    // type-name, or it is a unary-expression that starts with a compound
-    // literal, or starts with a primary-expression that is a parenthesized
-    // expression.
-    ParenParseOption ExprType = CastExpr;
-    SourceLocation LParenLoc = Tok.getLocation(), RParenLoc;
-
-    Operand = ParseParenExpression(ExprType, true/*stopIfCastExpr*/,
-                                   false, CastTy, RParenLoc);
-    CastRange = SourceRange(LParenLoc, RParenLoc);
-
-    // If ParseParenExpression parsed a '(typename)' sequence only, then this is
-    // a type.
-    if (ExprType == CastExpr) {
-      isCastExpr = true;
-      return ExprEmpty();
-    }
-
-    if (getLangOpts().CPlusPlus || OpTok.isNot(tok::kw_typeof)) {
-      // GNU typeof in C requires the expression to be parenthesized. Not so for
-      // sizeof/alignof or in C++. Therefore, the parenthesized expression is
-      // the start of a unary-expression, but doesn't include any postfix
-      // pieces. Parse these now if present.
-      if (!Operand.isInvalid())
-        Operand = ParsePostfixExpressionSuffix(Operand.get());
-    }
-  }
-
-  // If we get here, the operand to the typeof/sizeof/alignof was an expression.
-  isCastExpr = false;
-  return Operand;
-}
-
-
-/// Parse a sizeof or alignof expression.
-///
-/// \verbatim
-///       unary-expression:  [C99 6.5.3]
-///         'sizeof' unary-expression
-///         'sizeof' '(' type-name ')'
-/// [C++11] 'sizeof' '...' '(' identifier ')'
-/// [GNU]   '__alignof' unary-expression
-/// [GNU]   '__alignof' '(' type-name ')'
-/// [C11]   '_Alignof' '(' type-name ')'
-/// [C++11] 'alignof' '(' type-id ')'
-/// \endverbatim
-ExprResult Parser::ParseUnaryExprOrTypeTraitExpression() {
-  assert(Tok.isOneOf(tok::kw_sizeof, tok::kw___alignof, tok::kw_alignof,
-                     tok::kw__Alignof, tok::kw_vec_step,
-                     tok::kw___builtin_omp_required_simd_align) &&
-         "Not a sizeof/alignof/vec_step expression!");
-  Token OpTok = Tok;
-  ConsumeToken();
-
-  // [C++11] 'sizeof' '...' '(' identifier ')'
-  if (Tok.is(tok::ellipsis) && OpTok.is(tok::kw_sizeof)) {
-    SourceLocation EllipsisLoc = ConsumeToken();
-    SourceLocation LParenLoc, RParenLoc;
-    IdentifierInfo *Name = nullptr;
-    SourceLocation NameLoc;
-    if (Tok.is(tok::l_paren)) {
-      BalancedDelimiterTracker T(*this, tok::l_paren);
-      T.consumeOpen();
-      LParenLoc = T.getOpenLocation();
-      if (Tok.is(tok::identifier)) {
-        Name = Tok.getIdentifierInfo();
-        NameLoc = ConsumeToken();
-        T.consumeClose();
-        RParenLoc = T.getCloseLocation();
-        if (RParenLoc.isInvalid())
-          RParenLoc = PP.getLocForEndOfToken(NameLoc);
-      } else {
-        Diag(Tok, diag::err_expected_parameter_pack);
-        SkipUntil(tok::r_paren, StopAtSemi);
-      }
-    } else if (Tok.is(tok::identifier)) {
-      Name = Tok.getIdentifierInfo();
-      NameLoc = ConsumeToken();
-      LParenLoc = PP.getLocForEndOfToken(EllipsisLoc);
-      RParenLoc = PP.getLocForEndOfToken(NameLoc);
-      Diag(LParenLoc, diag::err_paren_sizeof_parameter_pack)
-        << Name
-        << FixItHint::CreateInsertion(LParenLoc, "(")
-        << FixItHint::CreateInsertion(RParenLoc, ")");
-    } else {
-      Diag(Tok, diag::err_sizeof_parameter_pack);
-    }
-
-    if (!Name)
-      return ExprError();
-
-    EnterExpressionEvaluationContext Unevaluated(
-        Actions, Sema::ExpressionEvaluationContext::Unevaluated,
-        Sema::ReuseLambdaContextDecl);
-
-    return Actions.ActOnSizeofParameterPackExpr(getCurScope(),
-                                                OpTok.getLocation(),
-                                                *Name, NameLoc,
-                                                RParenLoc);
-  }
-
-  if (OpTok.isOneOf(tok::kw_alignof, tok::kw__Alignof))
-    Diag(OpTok, diag::warn_cxx98_compat_alignof);
-
-  EnterExpressionEvaluationContext Unevaluated(
-      Actions, Sema::ExpressionEvaluationContext::Unevaluated,
-      Sema::ReuseLambdaContextDecl);
-
-  bool isCastExpr;
-  ParsedType CastTy;
-  SourceRange CastRange;
-  ExprResult Operand = ParseExprAfterUnaryExprOrTypeTrait(OpTok,
-                                                          isCastExpr,
-                                                          CastTy,
-                                                          CastRange);
-
-  UnaryExprOrTypeTrait ExprKind = UETT_SizeOf;
-  if (OpTok.isOneOf(tok::kw_alignof, tok::kw__Alignof))
-    ExprKind = UETT_AlignOf;
-  else if (OpTok.is(tok::kw___alignof))
-    ExprKind = UETT_PreferredAlignOf;
-  else if (OpTok.is(tok::kw_vec_step))
-    ExprKind = UETT_VecStep;
-  else if (OpTok.is(tok::kw___builtin_omp_required_simd_align))
-    ExprKind = UETT_OpenMPRequiredSimdAlign;
-
-  if (isCastExpr)
-    return Actions.ActOnUnaryExprOrTypeTraitExpr(OpTok.getLocation(),
-                                                 ExprKind,
-                                                 /*isType=*/true,
-                                                 CastTy.getAsOpaquePtr(),
-                                                 CastRange);
-
-  if (OpTok.isOneOf(tok::kw_alignof, tok::kw__Alignof))
-    Diag(OpTok, diag::ext_alignof_expr) << OpTok.getIdentifierInfo();
-
-  // If we get here, the operand to the sizeof/alignof was an expression.
-  if (!Operand.isInvalid())
-    Operand = Actions.ActOnUnaryExprOrTypeTraitExpr(OpTok.getLocation(),
-                                                    ExprKind,
-                                                    /*isType=*/false,
-                                                    Operand.get(),
-                                                    CastRange);
-  return Operand;
-}
-
-/// ParseBuiltinPrimaryExpression
-///
-/// \verbatim
-///       primary-expression: [C99 6.5.1]
-/// [GNU]   '__builtin_va_arg' '(' assignment-expression ',' type-name ')'
-/// [GNU]   '__builtin_offsetof' '(' type-name ',' offsetof-member-designator')'
-/// [GNU]   '__builtin_choose_expr' '(' assign-expr ',' assign-expr ','
-///                                     assign-expr ')'
-/// [GNU]   '__builtin_types_compatible_p' '(' type-name ',' type-name ')'
-/// [OCL]   '__builtin_astype' '(' assignment-expression ',' type-name ')'
-///
-/// [GNU] offsetof-member-designator:
-/// [GNU]   identifier
-/// [GNU]   offsetof-member-designator '.' identifier
-/// [GNU]   offsetof-member-designator '[' expression ']'
-/// \endverbatim
-ExprResult Parser::ParseBuiltinPrimaryExpression() {
-  ExprResult Res;
-  const IdentifierInfo *BuiltinII = Tok.getIdentifierInfo();
-
-  tok::TokenKind T = Tok.getKind();
-  SourceLocation StartLoc = ConsumeToken();   // Eat the builtin identifier.
-
-  // All of these start with an open paren.
-  if (Tok.isNot(tok::l_paren))
-    return ExprError(Diag(Tok, diag::err_expected_after) << BuiltinII
-                                                         << tok::l_paren);
-
-  BalancedDelimiterTracker PT(*this, tok::l_paren);
-  PT.consumeOpen();
-
-  // TODO: Build AST.
-
-  switch (T) {
-  default: llvm_unreachable("Not a builtin primary expression!");
-  case tok::kw___builtin_va_arg: {
-    ExprResult Expr(ParseAssignmentExpression());
-
-    if (ExpectAndConsume(tok::comma)) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      Expr = ExprError();
-    }
-
-    TypeResult Ty = ParseTypeName();
-
-    if (Tok.isNot(tok::r_paren)) {
-      Diag(Tok, diag::err_expected) << tok::r_paren;
-      Expr = ExprError();
-    }
-
-    if (Expr.isInvalid() || Ty.isInvalid())
-      Res = ExprError();
-    else
-      Res = Actions.ActOnVAArg(StartLoc, Expr.get(), Ty.get(), ConsumeParen());
-    break;
-  }
-  case tok::kw___builtin_offsetof: {
-    SourceLocation TypeLoc = Tok.getLocation();
-    TypeResult Ty = ParseTypeName();
-    if (Ty.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    if (ExpectAndConsume(tok::comma)) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    // We must have at least one identifier here.
-    if (Tok.isNot(tok::identifier)) {
-      Diag(Tok, diag::err_expected) << tok::identifier;
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    // Keep track of the various subcomponents we see.
-    SmallVector<Sema::OffsetOfComponent, 4> Comps;
-
-    Comps.push_back(Sema::OffsetOfComponent());
-    Comps.back().isBrackets = false;
-    Comps.back().U.IdentInfo = Tok.getIdentifierInfo();
-    Comps.back().LocStart = Comps.back().LocEnd = ConsumeToken();
-
-    // FIXME: This loop leaks the index expressions on error.
-    while (1) {
-      if (Tok.is(tok::period)) {
-        // offsetof-member-designator: offsetof-member-designator '.' identifier
-        Comps.push_back(Sema::OffsetOfComponent());
-        Comps.back().isBrackets = false;
-        Comps.back().LocStart = ConsumeToken();
-
-        if (Tok.isNot(tok::identifier)) {
-          Diag(Tok, diag::err_expected) << tok::identifier;
-          SkipUntil(tok::r_paren, StopAtSemi);
-          return ExprError();
-        }
-        Comps.back().U.IdentInfo = Tok.getIdentifierInfo();
-        Comps.back().LocEnd = ConsumeToken();
-
-      } else if (Tok.is(tok::l_square)) {
-        if (CheckProhibitedCXX11Attribute())
-          return ExprError();
-
-        // offsetof-member-designator: offsetof-member-design '[' expression ']'
-        Comps.push_back(Sema::OffsetOfComponent());
-        Comps.back().isBrackets = true;
-        BalancedDelimiterTracker ST(*this, tok::l_square);
-        ST.consumeOpen();
-        Comps.back().LocStart = ST.getOpenLocation();
-        Res = ParseExpression();
-        if (Res.isInvalid()) {
-          SkipUntil(tok::r_paren, StopAtSemi);
-          return Res;
-        }
-        Comps.back().U.E = Res.get();
-
-        ST.consumeClose();
-        Comps.back().LocEnd = ST.getCloseLocation();
-      } else {
-        if (Tok.isNot(tok::r_paren)) {
-          PT.consumeClose();
-          Res = ExprError();
-        } else if (Ty.isInvalid()) {
-          Res = ExprError();
-        } else {
-          PT.consumeClose();
-          Res = Actions.ActOnBuiltinOffsetOf(getCurScope(), StartLoc, TypeLoc,
-                                             Ty.get(), Comps,
-                                             PT.getCloseLocation());
-        }
-        break;
-      }
-    }
-    break;
-  }
-  case tok::kw___builtin_choose_expr: {
-    ExprResult Cond(ParseAssignmentExpression());
-    if (Cond.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return Cond;
-    }
-    if (ExpectAndConsume(tok::comma)) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    ExprResult Expr1(ParseAssignmentExpression());
-    if (Expr1.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return Expr1;
-    }
-    if (ExpectAndConsume(tok::comma)) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    ExprResult Expr2(ParseAssignmentExpression());
-    if (Expr2.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return Expr2;
-    }
-    if (Tok.isNot(tok::r_paren)) {
-      Diag(Tok, diag::err_expected) << tok::r_paren;
-      return ExprError();
-    }
-    Res = Actions.ActOnChooseExpr(StartLoc, Cond.get(), Expr1.get(),
-                                  Expr2.get(), ConsumeParen());
-    break;
-  }
-  case tok::kw___builtin_astype: {
-    // The first argument is an expression to be converted, followed by a comma.
-    ExprResult Expr(ParseAssignmentExpression());
-    if (Expr.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    if (ExpectAndConsume(tok::comma)) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    // Second argument is the type to bitcast to.
-    TypeResult DestTy = ParseTypeName();
-    if (DestTy.isInvalid())
-      return ExprError();
-
-    // Attempt to consume the r-paren.
-    if (Tok.isNot(tok::r_paren)) {
-      Diag(Tok, diag::err_expected) << tok::r_paren;
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    Res = Actions.ActOnAsTypeExpr(Expr.get(), DestTy.get(), StartLoc,
-                                  ConsumeParen());
-    break;
-  }
-  case tok::kw___builtin_convertvector: {
-    // The first argument is an expression to be converted, followed by a comma.
-    ExprResult Expr(ParseAssignmentExpression());
-    if (Expr.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    if (ExpectAndConsume(tok::comma)) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    // Second argument is the type to bitcast to.
-    TypeResult DestTy = ParseTypeName();
-    if (DestTy.isInvalid())
-      return ExprError();
-
-    // Attempt to consume the r-paren.
-    if (Tok.isNot(tok::r_paren)) {
-      Diag(Tok, diag::err_expected) << tok::r_paren;
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    Res = Actions.ActOnConvertVectorExpr(Expr.get(), DestTy.get(), StartLoc,
-                                         ConsumeParen());
-    break;
-  }
-  }
-
-  if (Res.isInvalid())
-    return ExprError();
-
-  // These can be followed by postfix-expr pieces because they are
-  // primary-expressions.
-  return ParsePostfixExpressionSuffix(Res.get());
-}
-
-/// ParseParenExpression - This parses the unit that starts with a '(' token,
-/// based on what is allowed by ExprType.  The actual thing parsed is returned
-/// in ExprType. If stopIfCastExpr is true, it will only return the parsed type,
-/// not the parsed cast-expression.
-///
-/// \verbatim
-///       primary-expression: [C99 6.5.1]
-///         '(' expression ')'
-/// [GNU]   '(' compound-statement ')'      (if !ParenExprOnly)
-///       postfix-expression: [C99 6.5.2]
-///         '(' type-name ')' '{' initializer-list '}'
-///         '(' type-name ')' '{' initializer-list ',' '}'
-///       cast-expression: [C99 6.5.4]
-///         '(' type-name ')' cast-expression
-/// [ARC]   bridged-cast-expression
-/// [ARC] bridged-cast-expression:
-///         (__bridge type-name) cast-expression
-///         (__bridge_transfer type-name) cast-expression
-///         (__bridge_retained type-name) cast-expression
-///       fold-expression: [C++1z]
-///         '(' cast-expression fold-operator '...' ')'
-///         '(' '...' fold-operator cast-expression ')'
-///         '(' cast-expression fold-operator '...'
-///                 fold-operator cast-expression ')'
-/// \endverbatim
-ExprResult
-Parser::ParseParenExpression(ParenParseOption &ExprType, bool stopIfCastExpr,
-                             bool isTypeCast, ParsedType &CastTy,
-                             SourceLocation &RParenLoc) {
-  assert(Tok.is(tok::l_paren) && "Not a paren expr!");
-  ColonProtectionRAIIObject ColonProtection(*this, false);
-  BalancedDelimiterTracker T(*this, tok::l_paren);
-  if (T.consumeOpen())
-    return ExprError();
-  SourceLocation OpenLoc = T.getOpenLocation();
-
-  ExprResult Result(true);
-  bool isAmbiguousTypeId;
-  CastTy = nullptr;
-
-  if (Tok.is(tok::code_completion)) {
-    Actions.CodeCompleteOrdinaryName(getCurScope(),
-                 ExprType >= CompoundLiteral? Sema::PCC_ParenthesizedExpression
-                                            : Sema::PCC_Expression);
-    cutOffParsing();
-    return ExprError();
-  }
-
-  // Diagnose use of bridge casts in non-arc mode.
-  bool BridgeCast = (getLangOpts().ObjC &&
-                     Tok.isOneOf(tok::kw___bridge,
-                                 tok::kw___bridge_transfer,
-                                 tok::kw___bridge_retained,
-                                 tok::kw___bridge_retain));
-  if (BridgeCast && !getLangOpts().ObjCAutoRefCount) {
-    if (!TryConsumeToken(tok::kw___bridge)) {
-      StringRef BridgeCastName = Tok.getName();
-      SourceLocation BridgeKeywordLoc = ConsumeToken();
-      if (!PP.getSourceManager().isInSystemHeader(BridgeKeywordLoc))
-        Diag(BridgeKeywordLoc, diag::warn_arc_bridge_cast_nonarc)
-          << BridgeCastName
-          << FixItHint::CreateReplacement(BridgeKeywordLoc, "");
-    }
-    BridgeCast = false;
-  }
-
-  // None of these cases should fall through with an invalid Result
-  // unless they've already reported an error.
-  if (ExprType >= CompoundStmt && Tok.is(tok::l_brace)) {
-    Diag(Tok, diag::ext_gnu_statement_expr);
-
-    if (!getCurScope()->getFnParent() && !getCurScope()->getBlockParent()) {
-      Result = ExprError(Diag(OpenLoc, diag::err_stmtexpr_file_scope));
-    } else {
-      // Find the nearest non-record decl context. Variables declared in a
-      // statement expression behave as if they were declared in the enclosing
-      // function, block, or other code construct.
-      DeclContext *CodeDC = Actions.CurContext;
-      while (CodeDC->isRecord() || isa<EnumDecl>(CodeDC)) {
-        CodeDC = CodeDC->getParent();
-        assert(CodeDC && !CodeDC->isFileContext() &&
-               "statement expr not in code context");
-      }
-      Sema::ContextRAII SavedContext(Actions, CodeDC, /*NewThisContext=*/false);
-
-      Actions.ActOnStartStmtExpr();
-
-      StmtResult Stmt(ParseCompoundStatement(true));
-      ExprType = CompoundStmt;
-
-      // If the substmt parsed correctly, build the AST node.
-      if (!Stmt.isInvalid()) {
-        Result = Actions.ActOnStmtExpr(OpenLoc, Stmt.get(), Tok.getLocation());
-      } else {
-        Actions.ActOnStmtExprError();
-      }
-    }
-  } else if (ExprType >= CompoundLiteral && BridgeCast) {
-    tok::TokenKind tokenKind = Tok.getKind();
-    SourceLocation BridgeKeywordLoc = ConsumeToken();
-
-    // Parse an Objective-C ARC ownership cast expression.
-    ObjCBridgeCastKind Kind;
-    if (tokenKind == tok::kw___bridge)
-      Kind = OBC_Bridge;
-    else if (tokenKind == tok::kw___bridge_transfer)
-      Kind = OBC_BridgeTransfer;
-    else if (tokenKind == tok::kw___bridge_retained)
-      Kind = OBC_BridgeRetained;
-    else {
-      // As a hopefully temporary workaround, allow __bridge_retain as
-      // a synonym for __bridge_retained, but only in system headers.
-      assert(tokenKind == tok::kw___bridge_retain);
-      Kind = OBC_BridgeRetained;
-      if (!PP.getSourceManager().isInSystemHeader(BridgeKeywordLoc))
-        Diag(BridgeKeywordLoc, diag::err_arc_bridge_retain)
-          << FixItHint::CreateReplacement(BridgeKeywordLoc,
-                                          "__bridge_retained");
-    }
-
-    TypeResult Ty = ParseTypeName();
-    T.consumeClose();
-    ColonProtection.restore();
-    RParenLoc = T.getCloseLocation();
-    ExprResult SubExpr = ParseCastExpression(/*isUnaryExpression=*/false);
-
-    if (Ty.isInvalid() || SubExpr.isInvalid())
-      return ExprError();
-
-    return Actions.ActOnObjCBridgedCast(getCurScope(), OpenLoc, Kind,
-                                        BridgeKeywordLoc, Ty.get(),
-                                        RParenLoc, SubExpr.get());
-  } else if (ExprType >= CompoundLiteral &&
-             isTypeIdInParens(isAmbiguousTypeId)) {
-
-    // Otherwise, this is a compound literal expression or cast expression.
-
-    // In C++, if the type-id is ambiguous we disambiguate based on context.
-    // If stopIfCastExpr is true the context is a typeof/sizeof/alignof
-    // in which case we should treat it as type-id.
-    // if stopIfCastExpr is false, we need to determine the context past the
-    // parens, so we defer to ParseCXXAmbiguousParenExpression for that.
-    if (isAmbiguousTypeId && !stopIfCastExpr) {
-      ExprResult res = ParseCXXAmbiguousParenExpression(ExprType, CastTy, T,
-                                                        ColonProtection);
-      RParenLoc = T.getCloseLocation();
-      return res;
-    }
-
-    // Parse the type declarator.
-    DeclSpec DS(AttrFactory);
-    ParseSpecifierQualifierList(DS);
-    Declarator DeclaratorInfo(DS, DeclaratorContext::TypeNameContext);
-    ParseDeclarator(DeclaratorInfo);
-
-    // If our type is followed by an identifier and either ':' or ']', then
-    // this is probably an Objective-C message send where the leading '[' is
-    // missing. Recover as if that were the case.
-    if (!DeclaratorInfo.isInvalidType() && Tok.is(tok::identifier) &&
-        !InMessageExpression && getLangOpts().ObjC &&
-        (NextToken().is(tok::colon) || NextToken().is(tok::r_square))) {
-      TypeResult Ty;
-      {
-        InMessageExpressionRAIIObject InMessage(*this, false);
-        Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
-      }
-      Result = ParseObjCMessageExpressionBody(SourceLocation(),
-                                              SourceLocation(),
-                                              Ty.get(), nullptr);
-    } else {
-      // Match the ')'.
-      T.consumeClose();
-      ColonProtection.restore();
-      RParenLoc = T.getCloseLocation();
-      if (Tok.is(tok::l_brace)) {
-        ExprType = CompoundLiteral;
-        TypeResult Ty;
-        {
-          InMessageExpressionRAIIObject InMessage(*this, false);
-          Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
-        }
-        return ParseCompoundLiteralExpression(Ty.get(), OpenLoc, RParenLoc);
-      }
-
-      if (Tok.is(tok::l_paren)) {
-        // This could be OpenCL vector Literals
-        if (getLangOpts().OpenCL)
-        {
-          TypeResult Ty;
-          {
-            InMessageExpressionRAIIObject InMessage(*this, false);
-            Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
-          }
-          if(Ty.isInvalid())
-          {
-             return ExprError();
-          }
-          QualType QT = Ty.get().get().getCanonicalType();
-          if (QT->isVectorType())
-          {
-            // We parsed '(' vector-type-name ')' followed by '('
-
-            // Parse the cast-expression that follows it next.
-            // isVectorLiteral = true will make sure we don't parse any
-            // Postfix expression yet
-            Result = ParseCastExpression(/*isUnaryExpression=*/false,
-                                         /*isAddressOfOperand=*/false,
-                                         /*isTypeCast=*/IsTypeCast,
-                                         /*isVectorLiteral=*/true);
-
-            if (!Result.isInvalid()) {
-              Result = Actions.ActOnCastExpr(getCurScope(), OpenLoc,
-                                             DeclaratorInfo, CastTy,
-                                             RParenLoc, Result.get());
-            }
-
-            // After we performed the cast we can check for postfix-expr pieces.
-            if (!Result.isInvalid()) {
-              Result = ParsePostfixExpressionSuffix(Result);
-            }
-
-            return Result;
-          }
-        }
-      }
-
-      if (ExprType == CastExpr) {
-        // We parsed '(' type-name ')' and the thing after it wasn't a '{'.
-
-        if (DeclaratorInfo.isInvalidType())
-          return ExprError();
-
-        // Note that this doesn't parse the subsequent cast-expression, it just
-        // returns the parsed type to the callee.
-        if (stopIfCastExpr) {
-          TypeResult Ty;
-          {
-            InMessageExpressionRAIIObject InMessage(*this, false);
-            Ty = Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
-          }
-          CastTy = Ty.get();
-          return ExprResult();
-        }
-
-        // Reject the cast of super idiom in ObjC.
-        if (Tok.is(tok::identifier) && getLangOpts().ObjC &&
-            Tok.getIdentifierInfo() == Ident_super &&
-            getCurScope()->isInObjcMethodScope() &&
-            GetLookAheadToken(1).isNot(tok::period)) {
-          Diag(Tok.getLocation(), diag::err_illegal_super_cast)
-            << SourceRange(OpenLoc, RParenLoc);
-          return ExprError();
-        }
-
-        // Parse the cast-expression that follows it next.
-        // TODO: For cast expression with CastTy.
-        Result = ParseCastExpression(/*isUnaryExpression=*/false,
-                                     /*isAddressOfOperand=*/false,
-                                     /*isTypeCast=*/IsTypeCast);
-        if (!Result.isInvalid()) {
-          Result = Actions.ActOnCastExpr(getCurScope(), OpenLoc,
-                                         DeclaratorInfo, CastTy,
-                                         RParenLoc, Result.get());
-        }
-        return Result;
-      }
-
-      Diag(Tok, diag::err_expected_lbrace_in_compound_literal);
-      return ExprError();
-    }
-  } else if (ExprType >= FoldExpr && Tok.is(tok::ellipsis) &&
-             isFoldOperator(NextToken().getKind())) {
-    ExprType = FoldExpr;
-    return ParseFoldExpression(ExprResult(), T);
-  } else if (isTypeCast) {
-    // Parse the expression-list.
-    InMessageExpressionRAIIObject InMessage(*this, false);
-
-    ExprVector ArgExprs;
-    CommaLocsTy CommaLocs;
-
-    if (!ParseSimpleExpressionList(ArgExprs, CommaLocs)) {
-      // FIXME: If we ever support comma expressions as operands to
-      // fold-expressions, we'll need to allow multiple ArgExprs here.
-      if (ExprType >= FoldExpr && ArgExprs.size() == 1 &&
-          isFoldOperator(Tok.getKind()) && NextToken().is(tok::ellipsis)) {
-        ExprType = FoldExpr;
-        return ParseFoldExpression(ArgExprs[0], T);
-      }
-
-      ExprType = SimpleExpr;
-      Result = Actions.ActOnParenListExpr(OpenLoc, Tok.getLocation(),
-                                          ArgExprs);
-    }
-  } else {
-    InMessageExpressionRAIIObject InMessage(*this, false);
-
-    Result = ParseExpression(MaybeTypeCast);
-    if (!getLangOpts().CPlusPlus && MaybeTypeCast && Result.isUsable()) {
-      // Correct typos in non-C++ code earlier so that implicit-cast-like
-      // expressions are parsed correctly.
-      Result = Actions.CorrectDelayedTyposInExpr(Result);
-    }
-
-    if (ExprType >= FoldExpr && isFoldOperator(Tok.getKind()) &&
-        NextToken().is(tok::ellipsis)) {
-      ExprType = FoldExpr;
-      return ParseFoldExpression(Result, T);
-    }
-    ExprType = SimpleExpr;
-
-    // Don't build a paren expression unless we actually match a ')'.
-    if (!Result.isInvalid() && Tok.is(tok::r_paren))
-      Result =
-          Actions.ActOnParenExpr(OpenLoc, Tok.getLocation(), Result.get());
-  }
-
-  // Match the ')'.
-  if (Result.isInvalid()) {
-    SkipUntil(tok::r_paren, StopAtSemi);
-    return ExprError();
-  }
-
-  T.consumeClose();
-  RParenLoc = T.getCloseLocation();
-  return Result;
-}
-
-/// ParseCompoundLiteralExpression - We have parsed the parenthesized type-name
-/// and we are at the left brace.
-///
-/// \verbatim
-///       postfix-expression: [C99 6.5.2]
-///         '(' type-name ')' '{' initializer-list '}'
-///         '(' type-name ')' '{' initializer-list ',' '}'
-/// \endverbatim
-ExprResult
-Parser::ParseCompoundLiteralExpression(ParsedType Ty,
-                                       SourceLocation LParenLoc,
-                                       SourceLocation RParenLoc) {
-  assert(Tok.is(tok::l_brace) && "Not a compound literal!");
-  if (!getLangOpts().C99)   // Compound literals don't exist in C90.
-    Diag(LParenLoc, diag::ext_c99_compound_literal);
-  ExprResult Result = ParseInitializer();
-  if (!Result.isInvalid() && Ty)
-    return Actions.ActOnCompoundLiteral(LParenLoc, Ty, RParenLoc, Result.get());
-  return Result;
-}
-
-/// ParseStringLiteralExpression - This handles the various token types that
-/// form string literals, and also handles string concatenation [C99 5.1.1.2,
-/// translation phase #6].
-///
-/// \verbatim
-///       primary-expression: [C99 6.5.1]
-///         string-literal
-/// \verbatim
-ExprResult Parser::ParseStringLiteralExpression(bool AllowUserDefinedLiteral) {
-  assert(isTokenStringLiteral() && "Not a string literal!");
-
-  // String concat.  Note that keywords like __func__ and __FUNCTION__ are not
-  // considered to be strings for concatenation purposes.
-  SmallVector<Token, 4> StringToks;
-
-  do {
-    StringToks.push_back(Tok);
-    ConsumeStringToken();
-  } while (isTokenStringLiteral());
-
-  // Pass the set of string tokens, ready for concatenation, to the actions.
-  return Actions.ActOnStringLiteral(StringToks,
-                                    AllowUserDefinedLiteral ? getCurScope()
-                                                            : nullptr);
-}
-
-/// ParseGenericSelectionExpression - Parse a C11 generic-selection
-/// [C11 6.5.1.1].
-///
-/// \verbatim
-///    generic-selection:
-///           _Generic ( assignment-expression , generic-assoc-list )
-///    generic-assoc-list:
-///           generic-association
-///           generic-assoc-list , generic-association
-///    generic-association:
-///           type-name : assignment-expression
-///           default : assignment-expression
-/// \endverbatim
-ExprResult Parser::ParseGenericSelectionExpression() {
-  assert(Tok.is(tok::kw__Generic) && "_Generic keyword expected");
-  SourceLocation KeyLoc = ConsumeToken();
-
-  if (!getLangOpts().C11)
-    Diag(KeyLoc, diag::ext_c11_generic_selection);
-
-  BalancedDelimiterTracker T(*this, tok::l_paren);
-  if (T.expectAndConsume())
-    return ExprError();
-
-  ExprResult ControllingExpr;
-  {
-    // C11 6.5.1.1p3 "The controlling expression of a generic selection is
-    // not evaluated."
-    EnterExpressionEvaluationContext Unevaluated(
-        Actions, Sema::ExpressionEvaluationContext::Unevaluated);
-    ControllingExpr =
-        Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
-    if (ControllingExpr.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-  }
-
-  if (ExpectAndConsume(tok::comma)) {
-    SkipUntil(tok::r_paren, StopAtSemi);
-    return ExprError();
-  }
-
-  SourceLocation DefaultLoc;
-  TypeVector Types;
-  ExprVector Exprs;
-  do {
-    ParsedType Ty;
-    if (Tok.is(tok::kw_default)) {
-      // C11 6.5.1.1p2 "A generic selection shall have no more than one default
-      // generic association."
-      if (!DefaultLoc.isInvalid()) {
-        Diag(Tok, diag::err_duplicate_default_assoc);
-        Diag(DefaultLoc, diag::note_previous_default_assoc);
-        SkipUntil(tok::r_paren, StopAtSemi);
-        return ExprError();
-      }
-      DefaultLoc = ConsumeToken();
-      Ty = nullptr;
-    } else {
-      ColonProtectionRAIIObject X(*this);
-      TypeResult TR = ParseTypeName();
-      if (TR.isInvalid()) {
-        SkipUntil(tok::r_paren, StopAtSemi);
-        return ExprError();
-      }
-      Ty = TR.get();
-    }
-    Types.push_back(Ty);
-
-    if (ExpectAndConsume(tok::colon)) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-
-    // FIXME: These expressions should be parsed in a potentially potentially
-    // evaluated context.
-    ExprResult ER(
-        Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()));
-    if (ER.isInvalid()) {
-      SkipUntil(tok::r_paren, StopAtSemi);
-      return ExprError();
-    }
-    Exprs.push_back(ER.get());
-  } while (TryConsumeToken(tok::comma));
-
-  T.consumeClose();
-  if (T.getCloseLocation().isInvalid())
-    return ExprError();
-
-  return Actions.ActOnGenericSelectionExpr(KeyLoc, DefaultLoc,
-                                           T.getCloseLocation(),
-                                           ControllingExpr.get(),
-                                           Types, Exprs);
-}
-
-/// Parse A C++1z fold-expression after the opening paren and optional
-/// left-hand-side expression.
-///
-/// \verbatim
-///   fold-expression:
-///       ( cast-expression fold-operator ... )
-///       ( ... fold-operator cast-expression )
-///       ( cast-expression fold-operator ... fold-operator cast-expression )
-ExprResult Parser::ParseFoldExpression(ExprResult LHS,
-                                       BalancedDelimiterTracker &T) {
-  if (LHS.isInvalid()) {
-    T.skipToEnd();
-    return true;
-  }
-
-  tok::TokenKind Kind = tok::unknown;
-  SourceLocation FirstOpLoc;
-  if (LHS.isUsable()) {
-    Kind = Tok.getKind();
-    assert(isFoldOperator(Kind) && "missing fold-operator");
-    FirstOpLoc = ConsumeToken();
-  }
-
-  assert(Tok.is(tok::ellipsis) && "not a fold-expression");
-  SourceLocation EllipsisLoc = ConsumeToken();
-
-  ExprResult RHS;
-  if (Tok.isNot(tok::r_paren)) {
-    if (!isFoldOperator(Tok.getKind()))
-      return Diag(Tok.getLocation(), diag::err_expected_fold_operator);
-
-    if (Kind != tok::unknown && Tok.getKind() != Kind)
-      Diag(Tok.getLocation(), diag::err_fold_operator_mismatch)
-        << SourceRange(FirstOpLoc);
-    Kind = Tok.getKind();
-    ConsumeToken();
-
-    RHS = ParseExpression();
-    if (RHS.isInvalid()) {
-      T.skipToEnd();
-      return true;
-    }
-  }
-
-  Diag(EllipsisLoc, getLangOpts().CPlusPlus17
-                        ? diag::warn_cxx14_compat_fold_expression
-                        : diag::ext_fold_expression);
-
-  T.consumeClose();
-  return Actions.ActOnCXXFoldExpr(T.getOpenLocation(), LHS.get(), Kind,
-                                  EllipsisLoc, RHS.get(), T.getCloseLocation());
-}
-
-/// ParseExpressionList - Used for C/C++ (argument-)expression-list.
-///
-/// \verbatim
-///       argument-expression-list:
-///         assignment-expression
-///         argument-expression-list , assignment-expression
-///
-/// [C++] expression-list:
-/// [C++]   assignment-expression
-/// [C++]   expression-list , assignment-expression
-///
-/// [C++0x] expression-list:
-/// [C++0x]   initializer-list
-///
-/// [C++0x] initializer-list
-/// [C++0x]   initializer-clause ...[opt]
-/// [C++0x]   initializer-list , initializer-clause ...[opt]
-///
-/// [C++0x] initializer-clause:
-/// [C++0x]   assignment-expression
-/// [C++0x]   braced-init-list
-/// \endverbatim
-bool Parser::ParseExpressionList(SmallVectorImpl<Expr *> &Exprs,
-                                 SmallVectorImpl<SourceLocation> &CommaLocs,
-                                 llvm::function_ref<void()> Completer) {
-  bool SawError = false;
-  while (1) {
-    if (Tok.is(tok::code_completion)) {
-      if (Completer)
-        Completer();
-      else
-        Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Expression);
-      cutOffParsing();
-      return true;
-    }
-
-    ExprResult Expr;
-    if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
-      Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
-      Expr = ParseBraceInitializer();
-    } else
-      Expr = ParseAssignmentExpression();
-
-    if (Tok.is(tok::ellipsis))
-      Expr = Actions.ActOnPackExpansion(Expr.get(), ConsumeToken());
-    if (Expr.isInvalid()) {
-      SkipUntil(tok::comma, tok::r_paren, StopBeforeMatch);
-      SawError = true;
-    } else {
-      Exprs.push_back(Expr.get());
-    }
-
-    if (Tok.isNot(tok::comma))
-      break;
-    // Move to the next argument, remember where the comma was.
-    Token Comma = Tok;
-    CommaLocs.push_back(ConsumeToken());
-
-    checkPotentialAngleBracketDelimiter(Comma);
-  }
-  if (SawError) {
-    // Ensure typos get diagnosed when errors were encountered while parsing the
-    // expression list.
-    for (auto &E : Exprs) {
-      ExprResult Expr = Actions.CorrectDelayedTyposInExpr(E);
-      if (Expr.isUsable()) E = Expr.get();
-    }
-  }
-  return SawError;
-}
-
-/// ParseSimpleExpressionList - A simple comma-separated list of expressions,
-/// used for misc language extensions.
-///
-/// \verbatim
-///       simple-expression-list:
-///         assignment-expression
-///         simple-expression-list , assignment-expression
-/// \endverbatim
-bool
-Parser::ParseSimpleExpressionList(SmallVectorImpl<Expr*> &Exprs,
-                                  SmallVectorImpl<SourceLocation> &CommaLocs) {
-  while (1) {
-    ExprResult Expr = ParseAssignmentExpression();
-    if (Expr.isInvalid())
-      return true;
-
-    Exprs.push_back(Expr.get());
-
-    if (Tok.isNot(tok::comma))
-      return false;
-
-    // Move to the next argument, remember where the comma was.
-    Token Comma = Tok;
-    CommaLocs.push_back(ConsumeToken());
-
-    checkPotentialAngleBracketDelimiter(Comma);
-  }
-}
-
-/// ParseBlockId - Parse a block-id, which roughly looks like int (int x).
-///
-/// \verbatim
-/// [clang] block-id:
-/// [clang]   specifier-qualifier-list block-declarator
-/// \endverbatim
-void Parser::ParseBlockId(SourceLocation CaretLoc) {
-  if (Tok.is(tok::code_completion)) {
-    Actions.CodeCompleteOrdinaryName(getCurScope(), Sema::PCC_Type);
-    return cutOffParsing();
-  }
-
-  // Parse the specifier-qualifier-list piece.
-  DeclSpec DS(AttrFactory);
-  ParseSpecifierQualifierList(DS);
-
-  // Parse the block-declarator.
-  Declarator DeclaratorInfo(DS, DeclaratorContext::BlockLiteralContext);
-  DeclaratorInfo.setFunctionDefinitionKind(FDK_Definition);
-  ParseDeclarator(DeclaratorInfo);
-
-  MaybeParseGNUAttributes(DeclaratorInfo);
-
-  // Inform sema that we are starting a block.
-  Actions.ActOnBlockArguments(CaretLoc, DeclaratorInfo, getCurScope());
-}
-
-/// ParseBlockLiteralExpression - Parse a block literal, which roughly looks
-/// like ^(int x){ return x+1; }
-///
-/// \verbatim
-///         block-literal:
-/// [clang]   '^' block-args[opt] compound-statement
-/// [clang]   '^' block-id compound-statement
-/// [clang] block-args:
-/// [clang]   '(' parameter-list ')'
-/// \endverbatim
-ExprResult Parser::ParseBlockLiteralExpression() {
-  assert(Tok.is(tok::caret) && "block literal starts with ^");
-  SourceLocation CaretLoc = ConsumeToken();
-
-  PrettyStackTraceLoc CrashInfo(PP.getSourceManager(), CaretLoc,
-                                "block literal parsing");
-
-  // Enter a scope to hold everything within the block.  This includes the
-  // argument decls, decls within the compound expression, etc.  This also
-  // allows determining whether a variable reference inside the block is
-  // within or outside of the block.
-  ParseScope BlockScope(this, Scope::BlockScope | Scope::FnScope |
-                                  Scope::CompoundStmtScope | Scope::DeclScope);
-
-  // Inform sema that we are starting a block.
-  Actions.ActOnBlockStart(CaretLoc, getCurScope());
-
-  // Parse the return type if present.
-  DeclSpec DS(AttrFactory);
-  Declarator ParamInfo(DS, DeclaratorContext::BlockLiteralContext);
-  ParamInfo.setFunctionDefinitionKind(FDK_Definition);
-  // FIXME: Since the return type isn't actually parsed, it can't be used to
-  // fill ParamInfo with an initial valid range, so do it manually.
-  ParamInfo.SetSourceRange(SourceRange(Tok.getLocation(), Tok.getLocation()));
-
-  // If this block has arguments, parse them.  There is no ambiguity here with
-  // the expression case, because the expression case requires a parameter list.
-  if (Tok.is(tok::l_paren)) {
-    ParseParenDeclarator(ParamInfo);
-    // Parse the pieces after the identifier as if we had "int(...)".
-    // SetIdentifier sets the source range end, but in this case we're past
-    // that location.
-    SourceLocation Tmp = ParamInfo.getSourceRange().getEnd();
-    ParamInfo.SetIdentifier(nullptr, CaretLoc);
-    ParamInfo.SetRangeEnd(Tmp);
-    if (ParamInfo.isInvalidType()) {
-      // If there was an error parsing the arguments, they may have
-      // tried to use ^(x+y) which requires an argument list.  Just
-      // skip the whole block literal.
-      Actions.ActOnBlockError(CaretLoc, getCurScope());
-      return ExprError();
-    }
-
-    MaybeParseGNUAttributes(ParamInfo);
-
-    // Inform sema that we are starting a block.
-    Actions.ActOnBlockArguments(CaretLoc, ParamInfo, getCurScope());
-  } else if (!Tok.is(tok::l_brace)) {
-    ParseBlockId(CaretLoc);
-  } else {
-    // Otherwise, pretend we saw (void).
-    SourceLocation NoLoc;
-    ParamInfo.AddTypeInfo(
-        DeclaratorChunk::getFunction(/*HasProto=*/true,
-                                     /*IsAmbiguous=*/false,
-                                     /*RParenLoc=*/NoLoc,
-                                     /*ArgInfo=*/nullptr,
-                                     /*NumArgs=*/0,
-                                     /*EllipsisLoc=*/NoLoc,
-                                     /*RParenLoc=*/NoLoc,
-                                     /*RefQualifierIsLvalueRef=*/true,
-                                     /*RefQualifierLoc=*/NoLoc,
-                                     /*MutableLoc=*/NoLoc, EST_None,
-                                     /*ESpecRange=*/SourceRange(),
-                                     /*Exceptions=*/nullptr,
-                                     /*ExceptionRanges=*/nullptr,
-                                     /*NumExceptions=*/0,
-                                     /*NoexceptExpr=*/nullptr,
-                                     /*ExceptionSpecTokens=*/nullptr,
-                                     /*DeclsInPrototype=*/None, CaretLoc,
-                                     CaretLoc, ParamInfo),
-        CaretLoc);
-
-    MaybeParseGNUAttributes(ParamInfo);
-
-    // Inform sema that we are starting a block.
-    Actions.ActOnBlockArguments(CaretLoc, ParamInfo, getCurScope());
-  }
-
-
-  ExprResult Result(true);
-  if (!Tok.is(tok::l_brace)) {
-    // Saw something like: ^expr
-    Diag(Tok, diag::err_expected_expression);
-    Actions.ActOnBlockError(CaretLoc, getCurScope());
-    return ExprError();
-  }
-
-  StmtResult Stmt(ParseCompoundStatementBody());
-  BlockScope.Exit();
-  if (!Stmt.isInvalid())
-    Result = Actions.ActOnBlockStmtExpr(CaretLoc, Stmt.get(), getCurScope());
-  else
-    Actions.ActOnBlockError(CaretLoc, getCurScope());
-  return Result;
-}
-
-/// ParseObjCBoolLiteral - This handles the objective-c Boolean literals.
-///
-///         '__objc_yes'
-///         '__objc_no'
-ExprResult Parser::ParseObjCBoolLiteral() {
-  tok::TokenKind Kind = Tok.getKind();
-  return Actions.ActOnObjCBoolLiteral(ConsumeToken(), Kind);
-}
-
-/// Validate availability spec list, emitting diagnostics if necessary. Returns
-/// true if invalid.
-static bool CheckAvailabilitySpecList(Parser &P,
-                                      ArrayRef<AvailabilitySpec> AvailSpecs) {
-  llvm::SmallSet<StringRef, 4> Platforms;
-  bool HasOtherPlatformSpec = false;
-  bool Valid = true;
-  for (const auto &Spec : AvailSpecs) {
-    if (Spec.isOtherPlatformSpec()) {
-      if (HasOtherPlatformSpec) {
-        P.Diag(Spec.getBeginLoc(), diag::err_availability_query_repeated_star);
-        Valid = false;
-      }
-
-      HasOtherPlatformSpec = true;
-      continue;
-    }
-
-    bool Inserted = Platforms.insert(Spec.getPlatform()).second;
-    if (!Inserted) {
-      // Rule out multiple version specs referring to the same platform.
-      // For example, we emit an error for:
-      // @available(macos 10.10, macos 10.11, *)
-      StringRef Platform = Spec.getPlatform();
-      P.Diag(Spec.getBeginLoc(), diag::err_availability_query_repeated_platform)
-          << Spec.getEndLoc() << Platform;
-      Valid = false;
-    }
-  }
-
-  if (!HasOtherPlatformSpec) {
-    SourceLocation InsertWildcardLoc = AvailSpecs.back().getEndLoc();
-    P.Diag(InsertWildcardLoc, diag::err_availability_query_wildcard_required)
-        << FixItHint::CreateInsertion(InsertWildcardLoc, ", *");
-    return true;
-  }
-
-  return !Valid;
-}
-
-/// Parse availability query specification.
-///
-///  availability-spec:
-///     '*'
-///     identifier version-tuple
-Optional<AvailabilitySpec> Parser::ParseAvailabilitySpec() {
-  if (Tok.is(tok::star)) {
-    return AvailabilitySpec(ConsumeToken());
-  } else {
-    // Parse the platform name.
-    if (Tok.is(tok::code_completion)) {
-      Actions.CodeCompleteAvailabilityPlatformName();
-      cutOffParsing();
-      return None;
-    }
-    if (Tok.isNot(tok::identifier)) {
-      Diag(Tok, diag::err_avail_query_expected_platform_name);
-      return None;
-    }
-
-    IdentifierLoc *PlatformIdentifier = ParseIdentifierLoc();
-    SourceRange VersionRange;
-    VersionTuple Version = ParseVersionTuple(VersionRange);
-
-    if (Version.empty())
-      return None;
-
-    StringRef GivenPlatform = PlatformIdentifier->Ident->getName();
-    StringRef Platform =
-        AvailabilityAttr::canonicalizePlatformName(GivenPlatform);
-
-    if (AvailabilityAttr::getPrettyPlatformName(Platform).empty()) {
-      Diag(PlatformIdentifier->Loc,
-           diag::err_avail_query_unrecognized_platform_name)
-          << GivenPlatform;
-      return None;
-    }
-
-    return AvailabilitySpec(Version, Platform, PlatformIdentifier->Loc,
-                            VersionRange.getEnd());
-  }
-}
-
-ExprResult Parser::ParseAvailabilityCheckExpr(SourceLocation BeginLoc) {
-  assert(Tok.is(tok::kw___builtin_available) ||
-         Tok.isObjCAtKeyword(tok::objc_available));
-
-  // Eat the available or __builtin_available.
-  ConsumeToken();
-
-  BalancedDelimiterTracker Parens(*this, tok::l_paren);
-  if (Parens.expectAndConsume())
-    return ExprError();
-
-  SmallVector<AvailabilitySpec, 4> AvailSpecs;
-  bool HasError = false;
-  while (true) {
-    Optional<AvailabilitySpec> Spec = ParseAvailabilitySpec();
-    if (!Spec)
-      HasError = true;
-    else
-      AvailSpecs.push_back(*Spec);
-
-    if (!TryConsumeToken(tok::comma))
-      break;
-  }
-
-  if (HasError) {
-    SkipUntil(tok::r_paren, StopAtSemi);
-    return ExprError();
-  }
-
-  CheckAvailabilitySpecList(*this, AvailSpecs);
-
-  if (Parens.consumeClose())
-    return ExprError();
-
-  return Actions.ActOnObjCAvailabilityCheckExpr(AvailSpecs, BeginLoc,
-                                                Parens.getCloseLocation());
-}