First pass at build dependency graph for barback.

pkg/pathos/lib/path.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.
 
 /// A comprehensive, cross-platform path manipulation library.
 ///
 /// ## Installing ##
 ///
 /// Use [pub][] to install this package. Add the following to your
 /// `pubspec.yaml` file.
@@ skipping 457 matching lines @@
   /// URLs that start with `/` are known as "root-relative", since they're
   /// relative to the root of the current URL. Since root-relative paths are
   /// still absolute in every other sense, [isAbsolute] will return true for
   /// them. They can be detected using [isRootRelative].
   bool isAbsolute(String path) => _parse(path).isAbsolute;
 
   /// Returns `true` if [path] is a relative path and `false` if it is absolute.
   /// On POSIX systems, absolute paths start with a `/` (forward slash). On
   /// Windows, an absolute path starts with `\\`, or a drive letter followed by
   /// `:/` or `:\`.
-  bool isRelative(String path) => !isAbsolute(path);
+  bool isRelative(String path) => !this.isAbsolute(path);
 
   /// Returns `true` if [path] is a root-relative path and `false` if it's not.
   ///
   /// URLs that start with `/` are known as "root-relative", since they're
   /// relative to the root of the current URL. Since root-relative paths are
   /// still absolute in every other sense, [isAbsolute] will return true for
   /// them. They can be detected using [isRootRelative].
   ///
   /// No POSIX and Windows paths are root-relative.
   bool isRootRelative(String path) => _parse(path).isRootRelative;
@@ skipping 643 matching lines @@
     // doesn't count.
     if (lastDot <= 0) return [file, ''];
 
     return [file.substring(0, lastDot), file.substring(lastDot)];
   }
 
   _ParsedPath clone() => new _ParsedPath(
       style, root, isRootRelative,
       new List.from(parts), new List.from(separators));
 }