New analyzer snapshot.

pkg/analyzer/lib/src/generated/parser.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.parser;
 
 import 'dart:collection';
@@ skipping 1482 matching lines @@
    * A flag indicating whether the parser is to parse enum declarations.
    */
   bool _parseEnum = AnalysisOptionsImpl.DEFAULT_ENABLE_ENUM;
 
   /**
    * The next token to be parsed.
    */
   Token _currentToken;
 
   /**
+   * A flag indicating whether the parser is currently in a function body marked as being 'async'.
+   */
+  bool _inAsync = false;
+
+  /**
    * A flag indicating whether the parser is currently in the body of a loop.
    */
   bool _inLoop = false;
 
   /**
    * A flag indicating whether the parser is currently in a switch statement.
    */
   bool _inSwitch = false;
 
   /**
@@ skipping 3398 matching lines @@
    *   | block
    * </pre>
    *
    * @param mayBeEmpty `true` if the function body is allowed to be empty
    * @param emptyErrorCode the error code to report if function body expected, but not found
    * @param inExpression `true` if the function body is being parsed as part of an expression
    *          and therefore does not have a terminating semicolon
    * @return the function body that was parsed
    */
   FunctionBody _parseFunctionBody(bool mayBeEmpty, ParserErrorCode emptyErrorCode, bool inExpression) {
+    bool wasInAsync = _inAsync;
     bool wasInLoop = _inLoop;
     bool wasInSwitch = _inSwitch;
+    _inAsync = false;
     _inLoop = false;
     _inSwitch = false;
     try {
       if (_matches(TokenType.SEMICOLON)) {
         if (!mayBeEmpty) {
           _reportErrorForCurrentToken(emptyErrorCode, []);
         }
         return new EmptyFunctionBody(andAdvance);
       } else if (_matchesString(_NATIVE)) {
         Token nativeToken = andAdvance;
         StringLiteral stringLiteral = null;
         if (_matches(TokenType.STRING)) {
           stringLiteral = parseStringLiteral();
         }
         return new NativeFunctionBody(nativeToken, stringLiteral, _expect(TokenType.SEMICOLON));
       }
       Token keyword = null;
       Token star = null;
       if (_parseAsync) {
         if (_matchesString(ASYNC)) {
           keyword = andAdvance;
           if (_matches(TokenType.STAR)) {
             star = andAdvance;
           }
+          _inAsync = true;
         } else if (_matchesString(SYNC)) {
           keyword = andAdvance;
           if (_matches(TokenType.STAR)) {
             star = andAdvance;
           }
         }
       }
       if (_matches(TokenType.FUNCTION)) {
         if (keyword != null) {
           if (!_tokenMatchesString(keyword, ASYNC)) {
@@ skipping 23 matching lines @@
           _skipBlock();
           return new EmptyFunctionBody(_createSyntheticToken(TokenType.SEMICOLON));
         }
         return new BlockFunctionBody(keyword, star, parseBlock());
       } else {
         // Invalid function body
         _reportErrorForCurrentToken(emptyErrorCode, []);
         return new EmptyFunctionBody(_createSyntheticToken(TokenType.SEMICOLON));
       }
     } finally {
+      _inAsync = wasInAsync;
       _inLoop = wasInLoop;
       _inSwitch = wasInSwitch;
     }
   }
 
   /**
    * Parse a function declaration.
    *
    * <pre>
    * functionDeclaration ::=
@@ skipping 763 matching lines @@
         return _parseVariableDeclarationStatementAfterMetadata(commentAndMetadata);
       } else if (keyword == Keyword.NEW || keyword == Keyword.TRUE || keyword == Keyword.FALSE || keyword == Keyword.NULL || keyword == Keyword.SUPER || keyword == Keyword.THIS) {
         return new ExpressionStatement(parseExpression2(), _expect(TokenType.SEMICOLON));
       } else {
         //
         // We have found an error of some kind. Try to recover.
         //
         _reportErrorForCurrentToken(ParserErrorCode.MISSING_STATEMENT, []);
         return new EmptyStatement(_createSyntheticToken(TokenType.SEMICOLON));
       }
-    } else if (_parseAsync && _matchesString(_YIELD)) {
+    } else if (_inAsync && _matchesString(_YIELD)) {
       return _parseYieldStatement();
-    } else if (_parseAsync && _matchesString(_AWAIT) && _tokenMatchesKeyword(_peek(), Keyword.FOR)) {
-      return _parseForStatement();
+    } else if (_inAsync && _matchesString(_AWAIT)) {
+      if (_tokenMatchesKeyword(_peek(), Keyword.FOR)) {
+        return _parseForStatement();
+      }
+      return new ExpressionStatement(parseExpression2(), _expect(TokenType.SEMICOLON));
     } else if (_matches(TokenType.SEMICOLON)) {
       return _parseEmptyStatement();
     } else if (_isInitializedVariableDeclaration()) {
       return _parseVariableDeclarationStatementAfterMetadata(commentAndMetadata);
     } else if (_isFunctionDeclaration()) {
       return _parseFunctionDeclarationStatement();
     } else if (_matches(TokenType.CLOSE_CURLY_BRACKET)) {
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_STATEMENT, []);
       return new EmptyStatement(_createSyntheticToken(TokenType.SEMICOLON));
     } else {
@@ skipping 795 matching lines @@
         } else {
           // Invalid operator before 'super'
           _reportErrorForCurrentToken(ParserErrorCode.INVALID_OPERATOR_FOR_SUPER, [operator.lexeme]);
           return new PrefixExpression(operator, new SuperExpression(andAdvance));
         }
       }
       return new PrefixExpression(operator, _parseAssignableExpression(false));
     } else if (_matches(TokenType.PLUS)) {
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_IDENTIFIER, []);
       return _createSyntheticIdentifier();
-    } else if (_parseAsync && _matchesString(_AWAIT)) {
+    } else if (_inAsync && _matchesString(_AWAIT)) {
       return _parseAwaitExpression();
     }
     return _parsePostfixExpression();
   }
 
   /**
    * Parse a variable declaration.
    *
    * <pre>
    * variableDeclaration ::=
@@ skipping 2852 matching lines @@
         return trampoline(target, arguments[0], arguments[1]);
       case 3:
         return trampoline(target, arguments[0], arguments[1], arguments[2]);
       case 4:
         return trampoline(target, arguments[0], arguments[1], arguments[2], arguments[3]);
       default:
         throw new IllegalArgumentException("Not implemented for > 4 arguments");
     }
   }
 }