Remove --harmony-async-await runtime flag

src/parsing/parser-base.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PARSING_PARSER_BASE_H
 #define V8_PARSING_PARSER_BASE_H
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/bailout-reason.h"
@@ skipping 197 matching lines @@
         zone_(zone),
         classifier_(nullptr),
         scanner_(scanner),
         stack_overflow_(false),
         default_eager_compile_hint_(FunctionLiteral::kShouldLazyCompile),
         function_literal_id_(0),
         allow_natives_(false),
         allow_tailcalls_(false),
         allow_harmony_do_expressions_(false),
         allow_harmony_function_sent_(false),
-        allow_harmony_async_await_(false),
         allow_harmony_restrictive_generators_(false),
         allow_harmony_trailing_commas_(false),
         allow_harmony_class_fields_(false),
         allow_harmony_object_spread_(false) {}
 
 #define ALLOW_ACCESSORS(name)                           \
   bool allow_##name() const { return allow_##name##_; } \
   void set_allow_##name(bool allow) { allow_##name##_ = allow; }
 
   ALLOW_ACCESSORS(natives);
   ALLOW_ACCESSORS(tailcalls);
   ALLOW_ACCESSORS(harmony_do_expressions);
   ALLOW_ACCESSORS(harmony_function_sent);
-  ALLOW_ACCESSORS(harmony_async_await);
   ALLOW_ACCESSORS(harmony_restrictive_generators);
   ALLOW_ACCESSORS(harmony_trailing_commas);
   ALLOW_ACCESSORS(harmony_class_fields);
   ALLOW_ACCESSORS(harmony_object_spread);
 
 #undef ALLOW_ACCESSORS
 
   uintptr_t stack_limit() const { return stack_limit_; }
 
   void set_stack_limit(uintptr_t stack_limit) { stack_limit_ = stack_limit; }
@@ skipping 1205 matching lines @@
   bool stack_overflow_;
 
   FunctionLiteral::EagerCompileHint default_eager_compile_hint_;
 
   int function_literal_id_;
 
   bool allow_natives_;
   bool allow_tailcalls_;
   bool allow_harmony_do_expressions_;
   bool allow_harmony_function_sent_;
-  bool allow_harmony_async_await_;
   bool allow_harmony_restrictive_generators_;
   bool allow_harmony_trailing_commas_;
   bool allow_harmony_class_fields_;
   bool allow_harmony_object_spread_;
 
   friend class DiscardableZoneScope;
 };
 
 template <typename Impl>
 ParserBase<Impl>::FunctionState::FunctionState(
@@ skipping 266 matching lines @@
 
     case Token::NULL_LITERAL:
     case Token::TRUE_LITERAL:
     case Token::FALSE_LITERAL:
     case Token::SMI:
     case Token::NUMBER:
       BindingPatternUnexpectedToken();
       return impl()->ExpressionFromLiteral(Next(), beg_pos);
 
     case Token::ASYNC:
-      if (allow_harmony_async_await() &&
-          !scanner()->HasAnyLineTerminatorAfterNext() &&
+      if (!scanner()->HasAnyLineTerminatorAfterNext() &&
           PeekAhead() == Token::FUNCTION) {
         Consume(Token::ASYNC);
         return ParseAsyncFunctionLiteral(CHECK_OK);
       }
       // CoverCallExpressionAndAsyncArrowHead
       *is_async = true;
     /* falls through */
     case Token::IDENTIFIER:
     case Token::LET:
     case Token::STATIC:
@@ skipping 283 matching lines @@
   DCHECK(!*is_computed_name);
 
   *is_generator = Check(Token::MUL);
   if (*is_generator) {
     *kind = PropertyKind::kMethodProperty;
   }
 
   Token::Value token = peek();
   int pos = peek_position();
 
-  if (allow_harmony_async_await() && !*is_generator && token == Token::ASYNC &&
+  if (!*is_generator && token == Token::ASYNC &&
       !scanner()->HasAnyLineTerminatorAfterNext()) {
     Consume(Token::ASYNC);
     token = peek();
     if (SetPropertyKindFromToken(token, kind)) {
       *name = impl()->GetSymbol();  // TODO(bakkot) specialize on 'async'
       impl()->PushLiteralName(*name);
       return factory()->NewStringLiteral(*name, pos);
     }
     *kind = PropertyKind::kMethodProperty;
     *is_async = true;
@@ skipping 603 matching lines @@
     return ParseYieldExpression(accept_IN, ok);
   }
 
   FuncNameInferrer::State fni_state(fni_);
   Checkpoint checkpoint(this);
   ExpressionClassifier arrow_formals_classifier(
       this, classifier()->duplicate_finder());
 
   Scope::Snapshot scope_snapshot(scope());
 
-  bool is_async = allow_harmony_async_await() && peek() == Token::ASYNC &&
+  bool is_async = peek() == Token::ASYNC &&
                   !scanner()->HasAnyLineTerminatorAfterNext() &&
                   IsValidArrowFormalParametersStart(PeekAhead());
 
   bool parenthesized_formals = peek() == Token::LPAREN;
   if (!is_async && !parenthesized_formals) {
     ArrowFormalParametersUnexpectedToken();
   }
 
   // Parse a simple, faster sub-grammar (primary expression) if it's evident
   // that we have only a trivial expression to parse.
@@ skipping 1861 matching lines @@
       return ParseClassDeclaration(nullptr, false, ok);
     case Token::VAR:
     case Token::CONST:
       return ParseVariableStatement(kStatementListItem, nullptr, ok);
     case Token::LET:
       if (IsNextLetKeyword()) {
         return ParseVariableStatement(kStatementListItem, nullptr, ok);
       }
       break;
     case Token::ASYNC:
-      if (allow_harmony_async_await() && PeekAhead() == Token::FUNCTION &&
+      if (PeekAhead() == Token::FUNCTION &&
           !scanner()->HasAnyLineTerminatorAfterNext()) {
         Consume(Token::ASYNC);
         return ParseAsyncFunctionDeclaration(nullptr, false, ok);
       }
     /* falls through */
     default:
       break;
   }
   return ParseStatement(nullptr, kAllowLabelledFunctionStatement, ok);
 }
@@ skipping 966 matching lines @@
     has_seen_constructor_ = true;
     return;
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_BASE_H