Move modules-dependent IDL statements out of core by supporting 'implements' in RHS interface

Source/bindings/scripts/compute_interfaces_info.py

 #!/usr/bin/python
 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
@@ skipping 64 matching lines @@
 
 Design doc: http://www.chromium.org/developers/design-documents/idl-build
 """
 
 from collections import defaultdict
 import optparse
 import os
 import posixpath
 import sys
 
-from utilities import get_file_contents, write_pickle_file, get_interface_extended_attributes_from_idl, is_callback_interface_from_idl, get_partial_interface_name_from_idl, get_implemented_interfaces_from_idl, get_parent_interface, get_put_forward_interfaces_from_idl
+from utilities import get_file_contents, write_pickle_file, get_interface_extended_attributes_from_idl, is_callback_interface_from_idl, get_partial_interface_name_from_idl, get_implemented_interfaces_from_idl, get_source_interfaces_from_idl, get_parent_interface, get_put_forward_interfaces_from_idl
 
 module_path = os.path.dirname(__file__)
 source_path = os.path.normpath(os.path.join(module_path, os.pardir, os.pardir))
 
 INHERITED_EXTENDED_ATTRIBUTES = set([
     'ActiveDOMObject',
     'DependentLifetime',
     'GarbageCollected',
     'WillBeGarbageCollected',
 ])
@@ skipping 88 matching lines @@
         'is_callback_interface': is_callback_interface_from_idl(idl_file_contents),
         # Interfaces that are referenced (used as types) and that we introspect
         # during code generation (beyond interface-level data ([ImplementedAs],
         # is_callback_interface, ancestors, and inherited extended attributes):
         # deep dependencies.
         # These cause rebuilds of referrers, due to the dependency, so these
         # should be minimized; currently only targets of [PutForwards].
         'referenced_interfaces': get_put_forward_interfaces_from_idl(idl_file_contents),
     }
 
+    source_implements_interfaces = get_source_interfaces_from_idl(idl_file_contents, interface_name)

[Inactive, 2014/05/07 20:08:07]

Please add a comment to explain why we need to do this.

+    for source_interface_name in source_implements_interfaces:
+        interface_info = interfaces_info[source_interface_name]
+        interface_info['implements_interfaces'].append(interface_name)
+
     # Record inheritance information
     inherited_extended_attributes_by_interface[interface_name] = dict(
             (key, value)
             for key, value in extended_attributes.iteritems()
             if key in INHERITED_EXTENDED_ATTRIBUTES)
     parent = get_parent_interface(idl_file_contents)
     if parent:
         parent_interfaces[interface_name] = parent
 
 
@@ skipping 93 matching lines @@
     idl_files.extend(args)
 
     compute_interfaces_info(idl_files)
     write_pickle_file(options.interfaces_info_file,
                       interfaces_info,
                       options.write_file_only_if_changed)
 
 
 if __name__ == '__main__':
     sys.exit(main())