Parse for-in statements with Fasta.

pkg/front_end/lib/src/fasta/parser/parser.dart

 // 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.
 
 library fasta.parser.parser;
 
 import '../scanner.dart' show ErrorToken;
 
 import '../scanner/recover.dart' show closeBraceFor, skipToEof;
 
@@ skipping 3186 matching lines @@
       listener.endElseStatement(token);
     }
     listener.endIfStatement(ifToken, elseToken);
     return token;
   }
 
   Token parseForStatement(Token awaitToken, Token token) {
     Token forToken = token;
     listener.beginForStatement(forToken);
     token = expect('for', token);
+    Token leftParenthesis = token;
     token = expect('(', token);
     token = parseVariablesDeclarationOrExpressionOpt(token);
     if (optional('in', token)) {
-      return parseForInRest(awaitToken, forToken, token);
+      return parseForInRest(awaitToken, forToken, leftParenthesis, token);
     } else {
       if (awaitToken != null) {
         reportRecoverableError(awaitToken, ErrorKind.InvalidAwaitFor);
       }
       return parseForRest(forToken, token);
     }
   }
 
   Token parseVariablesDeclarationOrExpressionOpt(Token token) {
     final String value = token.stringValue;
@@ skipping 32 matching lines @@
       }
     }
     token = expect(')', token);
     listener.beginForStatementBody(token);
     token = parseStatement(token);
     listener.endForStatementBody(token);
     listener.endForStatement(expressionCount, forToken, token);
     return token;
   }
 
-  Token parseForInRest(Token awaitToken, Token forToken, Token token) {
+  Token parseForInRest(
+      Token awaitToken, Token forToken, Token leftParenthesis, Token token) {
     assert(optional('in', token));
     Token inKeyword = token;
     token = token.next;
     listener.beginForInExpression(token);
     token = parseExpression(token);
     listener.endForInExpression(token);
+    Token rightParenthesis = token;
     token = expect(')', token);
     listener.beginForInBody(token);
     token = parseStatement(token);
     listener.endForInBody(token);
-    listener.endForIn(awaitToken, forToken, inKeyword, token);
+    listener.endForIn(awaitToken, forToken, leftParenthesis, inKeyword,
+        rightParenthesis, token);
     return token;
   }
 
   Token parseWhileStatement(Token token) {
     Token whileToken = token;
     listener.beginWhileStatement(whileToken);
     token = expect('while', token);
     token = parseParenthesizedExpression(token);
     listener.beginWhileStatementBody(token);
     token = parseStatement(token);
@@ skipping 312 matching lines @@
         break;
     }
     if (isRecoverable) {
       listener.handleRecoverableError(token, kind, arguments);
       return null;
     } else {
       return listener.handleUnrecoverableError(token, kind, arguments);
     }
   }
 }