Create LinkExceptions using the right arguments, in dart:io.

sdk/lib/io/link.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 /**
  * [Link] objects are references to filesystem links.
  *
  */
@@ skipping 128 matching lines @@
       }
       return this;
     });
   }
 
   void createSync(String target) {
     if (Platform.operatingSystem == 'windows') {
       target = _makeWindowsLinkTarget(target);
     }
     var result = _File._createLink(path, target);
-    throwIfError(result, "Cannot create link '$path'");
+    throwIfError(result, "Cannot create link", path);
   }
 
   // Put target into the form "\??\C:\my\target\dir".
   String _makeWindowsLinkTarget(String target) {
     if (target.startsWith('\\??\\')) {
       return target;
     }
     if (!(target.length > 3 && target[1] == ':' && target[2] == '\\')) {
       target = new File(target).fullPathSync();
     }
@@ skipping 21 matching lines @@
     return _fileService.call(request).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionFromResponse(response, "Cannot delete link '$path'");
       }
       return this;
     });
   }
 
   void deleteSync() {
     var result = _File._deleteLink(path);
-    throwIfError(result, "Cannot delete link '$path'");
+    throwIfError(result, "Cannot delete link", path);
   }
 
   Future<String> target() {
     _ensureFileService();
     List request = new List(2);
     request[0] = _LINK_TARGET_REQUEST;
     request[1] = path;
     return _fileService.call(request).then((response) {
       if (_isErrorResponse(response)) {
         throw _exceptionFromResponse(response,
             "Cannot get target of link '$path'");
       }
       return response;
     });
   }
 
   String targetSync() {
     var result = _File._linkTarget(path);
-    throwIfError(result, "Cannot read link '$path'");
+    throwIfError(result, "Cannot read link", path);
     return result;
   }
 
-  static throwIfError(Object result, String msg) {
+  static throwIfError(Object result, String msg, [String path = ""]) {
     if (result is OSError) {
-      throw new LinkException(msg, result);
+      throw new LinkException(msg, path, result);
     }
   }
 
   bool _isErrorResponse(response) {
     return response is List && response[0] != _SUCCESS_RESPONSE;
   }
 
   void _ensureFileService() {
     if (_fileService == null) {
       _fileService = _FileUtils._newServicePort();
@@ skipping 11 matching lines @@
         return new LinkException(message, err);
       default:
         return new Exception("Unknown error");
     }
   }
 }
 
 
 class LinkException implements IOException {
   const LinkException([String this.message = "",
-                         String this.path = "",
-                         OSError this.osError = null]);
+                       String this.path = "",
+                       OSError this.osError = null]);
   String toString() {
     StringBuffer sb = new StringBuffer();
     sb.write("LinkException");
     if (!message.isEmpty) {
       sb.write(": $message");
       if (path != null) {
         sb.write(", path = $path");
       }
       if (osError != null) {
         sb.write(" ($osError)");
       }
     } else if (osError != null) {
       sb.write(": $osError");
       if (path != null) {
         sb.write(", path = $path");
       }
     }
     return sb.toString();
   }
   final String message;
   final String path;
   final OSError osError;
 }