Add Directory.systemTemp getter to replace createSystemTemp().

sdk/lib/io/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.
 
 part of dart.io;
 
 /**
  * A reference to a directory (or _folder_) on the file system.
  */
 abstract class Directory implements FileSystemEntity {
@@ skipping 50 matching lines @@
    *
    * If [recursive] is false, only the last directory in the path is
    * created. If [recursive] is true, all non-existing path components
    * are created. If the directory already exists nothing is done.
    *
    * If the directory cannot be created an exception is thrown.
    */
   void createSync({bool recursive: false});
 
   /**
-   * Creates a temporary directory in this directory.  Additional random
-   * characters are appended to [template] to produce a unique directory
-   * name.
+   * Gets the system temp directory.
+   *
+   * Gets the directory provided by the operating system for creating
+   * temporary files and directories in.
+   * The location of the system temp directory is platform-dependent,
+   * and may be set by an environment variable.
+   */
+  static Directory get systemTemp => _Directory.systemTemp;
+
+  /**
+   * Creates a temporary directory in this directory. Additional random
+   * characters are appended to [prefix] to produce a unique directory
+   * name. If [prefix] is missing or null, the empty string is used
+   * for [prefix].
    *
    * Returns a [:Future<Directory>:] that completes with the newly
    * created temporary directory.
    *
    * Deprecated behavior, to be removed Oct 18, 2013: If the path is the
    * empty string, the directory is created in the default system temp
-   * directory.  This capability has been moved to the static function
-   * [createSystemTemp].
+   * directory. This capability has been moved to the static getter
+   * [systemTemp].
    */
   Future<Directory> createTemp([String template]);
 
   /**
    * Synchronously creates a temporary directory in this directory.
-   * Additional random characters are appended to [template] to produce
-   * a unique directory name.
+   * Additional random characters are appended to [prefix] to produce
+   * a unique directory name. If [prefix] is missing or null, the empty
+   * string is used for [prefix].
    *
    * Returns the newly created temporary directory.
    *
    * Deprecated behavior, to be removed Oct 18, 2013: If the path is the
    * empty string, the directory is created in the default system temp
-   * directory.  This capability has been moved to the static function
+   * directory. This capability has been moved to the static function
    * [createSystemTemp].
    */
- Directory createTempSync([String template]);
-
-  /**
-   * Creates a temporary directory in the system temp directory.
-   * The location of the system temp directory is platform-dependent,
-   * and may be set by an environment variable.
-   * Additional random characters are appended to [template] to produce
-   * a unique directory name.
-   *
-   * Returns a [:Future<Directory>:] that completes with the newly
-   * created temporary directory.
-   */
-  static Future<Directory> createSystemTemp([String template]) =>
-      _Directory.createSystemTemp(template);
-
-  /**
-   * Synchronously creates a temporary directory in the system temp directory.
-   * The location of the system temp directory is platform-dependent,
-   * and may be set by an environment variable.
-   * Additional random characters are appended to [template] to produce
-   * a unique directory name.
-   *
-   * Returns a [:Future<Directory>:] that completes with the newly
-   * created temporary directory.
-   */
-  static Directory createSystemTempSync([String template]) =>
-      _Directory.createSystemTempSync(template);
+  Directory createTempSync([String template]);
 
   Future<String> resolveSymbolicLinks();
 
   String resolveSymbolicLinksSync();
 
   /**
    * Renames this directory. Returns a [:Future<Directory>:] that completes
    * with a [Directory] instance for the renamed directory.
    *
    * If newPath identifies an existing directory, that directory is
@@ skipping 99 matching lines @@
       if (path != null) {
         sb.write(", path = $path");
       }
     }
     return sb.toString();
   }
   final String message;
   final String path;
   final OSError osError;
 }