Initial implementation for lazy compound assignment operators

pkg/analyzer/lib/dart/ast/token.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.
 
 /**
  * Defines the tokens that are produced by the scanner, used by the parser, and
  * referenced from the [AST structure](ast.dart).
  */
 library analyzer.dart.ast.token;
 
@@ skipping 391 matching lines @@
       const TokenType._('SINGLE_LINE_COMMENT');
 
   static const TokenType STRING = const TokenType._('STRING');
 
   static const TokenType AMPERSAND =
       const TokenType._('AMPERSAND', TokenClass.BITWISE_AND_OPERATOR, '&');
 
   static const TokenType AMPERSAND_AMPERSAND = const TokenType._(
       'AMPERSAND_AMPERSAND', TokenClass.LOGICAL_AND_OPERATOR, '&&');
 
+  static const TokenType AMPERSAND_AMPERSAND_EQ = const TokenType._(
+      'AMPERSAND_AMPERSAND_EQ', TokenClass.ASSIGNMENT_OPERATOR, '&&=');
+
   static const TokenType AMPERSAND_EQ =
       const TokenType._('AMPERSAND_EQ', TokenClass.ASSIGNMENT_OPERATOR, '&=');
 
   static const TokenType AT = const TokenType._('AT', TokenClass.NO_CLASS, '@');
 
   static const TokenType BANG =
       const TokenType._('BANG', TokenClass.UNARY_PREFIX_OPERATOR, '!');
 
   static const TokenType BANG_EQ =
       const TokenType._('BANG_EQ', TokenClass.EQUALITY_OPERATOR, '!=');
 
   static const TokenType BAR =
       const TokenType._('BAR', TokenClass.BITWISE_OR_OPERATOR, '|');
 
   static const TokenType BAR_BAR =
       const TokenType._('BAR_BAR', TokenClass.LOGICAL_OR_OPERATOR, '||');
 
+  static const TokenType BAR_BAR_EQ =
+      const TokenType._('BAR_BAR_EQ', TokenClass.ASSIGNMENT_OPERATOR, '||=');
+
   static const TokenType BAR_EQ =
       const TokenType._('BAR_EQ', TokenClass.ASSIGNMENT_OPERATOR, '|=');
 
   static const TokenType COLON =
       const TokenType._('COLON', TokenClass.NO_CLASS, ':');
 
   static const TokenType COMMA =
       const TokenType._('COMMA', TokenClass.NO_CLASS, ',');
 
   static const TokenType CARET =
@@ skipping 297 matching lines @@
  */
 class _EndOfFileTokenType extends TokenType {
   /**
    * Initialize a newly created token.
    */
   const _EndOfFileTokenType() : super._('EOF', TokenClass.NO_CLASS, '');
 
   @override
   String toString() => '-eof-';
 }