Automatically generate most constructors

client/dom/scripts/systeminterface.py

 #!/usr/bin/python
 # 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.
 
 """This module providesfunctionality for systems to generate
 Dart interfaces from the IDL database."""
 
 import os
 import systembase
@@ skipping 97 matching lines @@
                                   (self._common_prefix, parent.type.id))
 
     comment = ' extends'
     extends_str = ''
     if extends:
       extends_str += ' extends ' + ', '.join(extends)
       comment = ','
     if suppressed_extends:
       extends_str += ' /*%s %s */' % (comment, ', '.join(suppressed_extends))
 
+    factory_provider = None
+    constructor_info = AnalyzeConstructor(self._interface)
+    if constructor_info:
+      factory_provider = '_' + typename + 'FactoryProvider';
+
     if typename in interface_factories:
-      extends_str += ' default ' + interface_factories[typename]
+      factory_provider = interface_factories[typename]
+
+    if factory_provider:
+      extends_str += ' default ' + factory_provider
 
     # TODO(vsm): Add appropriate package / namespace syntax.
     (self._members_emitter,
      self._top_level_emitter) = self._emitter.Emit(
          self._template + '$!TOP_LEVEL',
          ID=typename,
          EXTENDS=extends_str)
 
+    if constructor_info:
+      self._members_emitter.Emit(
+          '\n'
+          '  $CTOR($PARAMS);\n',
+          CTOR=typename,
+          PARAMS=constructor_info.ParametersInterfaceDeclaration());
+
     element_type = MaybeTypedArrayElementType(self._interface)
     if element_type:
       self._members_emitter.Emit(
           '\n'
           '  $CTOR(int length);\n'
           '\n'
           '  $CTOR.fromList(List<$TYPE> list);\n'
           '\n'
           '  $CTOR.fromBuffer(ArrayBuffer buffer);\n',
         CTOR=self._interface.id,
@@ skipping 56 matching lines @@
 
   # Interfaces get secondary members directly via the superinterfaces.
   def AddSecondaryAttribute(self, interface, getter, setter):
     pass
 
   def AddSecondaryOperation(self, interface, attr):
     pass
 
   def AddEventAttributes(self, event_attrs):
     pass