More multi-version support (part 2)

ppapi/generators/idl_node.py

 #!/usr/bin/python
 #
 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Nodes for PPAPI IDL AST"""
 
 #
 # IDL Node
@@ skipping 255 matching lines @@
   def GetRelease(self, version):
     label = self.GetLabel()
     if not label: return None
     return label.GetRelease(version)
 
   def GetVersion(self, release):
     label = self.GetLabel()
     if not label: return None
     return label.GetVersion(release)
 
+  def GetUniqueReleases(self, releases):
+    # Given a list of release, return a subset of releases that change.
+    last_hash = None
+    build_list = []
+    for rel in releases:
+      cur_hash = self.GetHash(rel)
+      if last_hash != cur_hash:
+        build_list.append(rel)
+      last_hash = cur_hash
+    return build_list
+
   def SetProperty(self, name, val):
     self.property_node.SetProperty(name, val)
 
   def GetProperty(self, name, default=None):
     return self.property_node.GetProperty(name, default)
 
   def Traverse(self, data, func):
     func(self, data)
     for child in self.children:
       child.Traverse(data, func)
@@ skipping 73 matching lines @@
   errors += ChildTest()
 
   if errors:
     ErrOut.Log('IDLNode failed with %d errors.' % errors)
     return  -1
   return 0
 
 if __name__ == '__main__':
   sys.exit(Main())