Add .fromPath constructors to File and Directory.

runtime/bin/directory.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.
 
 /**
  * [Directory] objects are used for working with directories.
  */
 interface Directory default _Directory {
   /**
-   * Creates a directory object. The path is either a full path or
-   * relative to the directory in which the Dart VM was
-   * started.
+   * Creates a directory object. The path is either an absolute path,
+   * or it is a relative path which is interpreted relative to the directory
+   * in which the Dart VM was started.
    */
   Directory(String path);
 
   /**
+   * Creates a directory object from a Path object. The path is either
+   * an absolute path, or it is a relative path which is interpreted
+   * relative to the directory in which the Dart VM was started.
+   */
+  Directory.fromPath(Path path);

[Søren Gjesse, 2012/06/22 08:06:12]

I know that it would be a breaking change, but shouldn't we consider to have
this one be the default one and rename the other to Directory.fromString. Or
just get rid of it, as one can always do

  new Directory(new Path(str))

[Bill Hesse, 2012/06/22 10:35:33]

I'd like to make breaking changes once we are more confident about how usable
the Path library is.

On 2012/06/22 08:06:12, Søren Gjesse wrote:

+
+  /**
    * Creates a directory object pointing to the current working
    * directory.
    */
   Directory.current();
 
   /**
    * Check whether a directory with this name already exists. Returns
    * a [:Future<bool>:] that completes with the result.
    */
   Future<bool> exists();
@@ skipping 158 matching lines @@
       if (path != null) {
         sb.add(", path = $path");
       }
     }
     return sb.toString();
   }
   final String message;
   final String path;
   final OSError osError;
 }