'Split && condition' quick assist.

compiler/java/com/google/dart/compiler/parser/DartParser.java

 // Copyright (c) 2012, 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.
 
 package com.google.dart.compiler.parser;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.io.CharStreams;
 import com.google.dart.compiler.DartCompilationError;
@@ skipping 4159 matching lines @@
    *    | SWITCH '(' expression ')' '{' switchCase* defaultCase? '}'
    *    ;
    * </pre>
    */
   private DartIfStatement parseIfStatement() {
     beginIfStatement();
     expect(Token.IF);
     expect(Token.LPAREN);
     DartExpression condition = parseExpression();
     expectCloseParen();
+    int closeParentOffset = ctx.getTokenLocation().getBegin();
     DartStatement yes = parseStatement();
     DartStatement no = null;
+    int elseTokenOffset = 0;
     if (optional(Token.ELSE)) {
+      elseTokenOffset = ctx.getTokenLocation().getBegin();
       no = parseStatement();
     }
-    return done(new DartIfStatement(condition, yes, no));
+    return done(new DartIfStatement(condition, closeParentOffset, yes, elseTokenOffset, no));
   }
 
   /**
    * <pre>
    * caseStatements
    *    : normalCompletingStatement* abruptCompletingStatement
    *    ;
    * </pre>
    */
   private List<DartStatement> parseCaseStatements() {
@@ skipping 545 matching lines @@
   private void reportError(DartNode node, ErrorCode errorCode, Object... arguments) {
     if (node != null) {
       reportError(new DartCompilationError(node, errorCode, arguments));
     }
   }
 
   private boolean currentlyParsingToplevel() {
     return   !(isParsingInterface || isTopLevelAbstract || isParsingClass);
   }
 }