Initial implementation for lazy compound assignment operators

pkg/analyzer/lib/src/generated/resolver.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.
 
 library analyzer.src.generated.resolver;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 3416 matching lines @@
 
   @override
   bool visitAssertStatement(AssertStatement node) => false;
 
   @override
   bool visitAssignmentExpression(AssignmentExpression node) {
     Expression leftHandSide = node.leftHandSide;
     if (_nodeExits(leftHandSide)) {
       return true;
     }
-    if (node.operator.type == TokenType.QUESTION_QUESTION_EQ) {
+    TokenType operatorType = node.operator.type;
+    if (operatorType == TokenType.AMPERSAND_AMPERSAND_EQ ||
+        operatorType == TokenType.BAR_BAR_EQ ||
+        operatorType == TokenType.QUESTION_QUESTION_EQ) {
       return false;
     }
     if (leftHandSide is PropertyAccess &&
         leftHandSide.operator.type == TokenType.QUESTION_PERIOD) {
       return false;
     }
     return _nodeExits(node.rightHandSide);
   }
 
   @override
@@ skipping 7543 matching lines @@
       return null;
     }
     if (identical(node.staticElement, variable)) {
       if (node.inSetterContext()) {
         result = true;
       }
     }
     return null;
   }
 }