Introduce TypeRegistry class.

lib/dom/scripts/systemnative.py

Index: lib/dom/scripts/systemnative.py
diff --git a/lib/dom/scripts/systemnative.py b/lib/dom/scripts/systemnative.py
index d98fa585c0ef22a2c7d2ba11c317d03539f9639b..a5d279066fb7a01a4545ad594b16cb317b0fa414 100644
--- a/lib/dom/scripts/systemnative.py
+++ b/lib/dom/scripts/systemnative.py
@@ -15,13 +15,12 @@ from systemhtml import HtmlSystemShared
 
 class NativeImplementationSystem(systembase.System):
 
-  def __init__(self, templates, database, emitters, output_dir, auxiliary_dir):
-    super(NativeImplementationSystem, self).__init__(
-        templates, database, emitters, output_dir)
+  def __init__(self, options, auxiliary_dir):
+    super(NativeImplementationSystem, self).__init__(options)
     self._auxiliary_dir = auxiliary_dir
     self._cpp_header_files = []
     self._cpp_impl_files = []
-    self._html_system = HtmlSystemShared(database)
+    self._html_system = HtmlSystemShared(self._database)
 
   def ImplementationGenerator(self, interface):
     return NativeImplementationGenerator(self, interface)
@@ -47,13 +46,13 @@ class NativeImplementationSystem(systembase.System):
       parameters = []
       arguments = []
       for argument in operation.arguments:
-        argument_type_info = GetIDLTypeInfo(argument.type.id)
+        argument_type_info = self._type_registry.TypeInfo(argument.type.id)
         parameters.append('%s %s' % (argument_type_info.parameter_type(),
                                      argument.id))
         arguments.append(argument_type_info.to_dart_conversion(argument.id))
         cpp_impl_includes |= set(argument_type_info.conversion_includes())
 
-      native_return_type = GetIDLTypeInfo(operation.type.id).native_type()
+      native_return_type = self._type_registry.TypeInfo(operation.type.id).native_type()
       cpp_header_handlers_emitter.Emit(
           '\n'
           '    virtual $TYPE handleEvent($PARAMETERS);\n',
@@ -212,7 +211,7 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
       self._cpp_header_emitter = emitter.Emitter()
       self._cpp_impl_emitter = emitter.Emitter()
 
-    self._interface_type_info = GetIDLTypeInfo(self._interface.id)
+    self._interface_type_info = self._TypeInfo(self._interface.id)
     self._members_emitter = emitter.Emitter()
     self._cpp_declarations_emitter = emitter.Emitter()
     self._cpp_impl_includes = set()
@@ -487,7 +486,7 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
       self._AddSetter(attribute, html_name)
 
   def _AddGetter(self, attr, html_name):
-    type_info = GetIDLTypeInfo(attr.type.id)
+    type_info = self._TypeInfo(attr.type.id)
     dart_declaration = '%s get %s()' % (self._DartType(attr.type.id), html_name)
     is_custom = 'Custom' in attr.ext_attrs or 'CustomGetter' in attr.ext_attrs
     cpp_callback_name = self._GenerateNativeBinding(attr.id, 1,
@@ -501,7 +500,7 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
     raises_exceptions = raises_exceptions or attr.get_raises
 
     if 'Reflect' in attr.ext_attrs:
-      webcore_function_name = GetIDLTypeInfo(attr.type.id).webcore_getter_name()
+      webcore_function_name = self._TypeInfo(attr.type.id).webcore_getter_name()
       if 'URL' in attr.ext_attrs:
         if 'NonEmpty' in attr.ext_attrs:
           webcore_function_name = 'getNonEmptyURLAttribute'
@@ -525,7 +524,7 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
         True, invocation, raises_exceptions=raises_exceptions)
 
   def _AddSetter(self, attr, html_name):
-    type_info = GetIDLTypeInfo(attr.type.id)
+    type_info = self._TypeInfo(attr.type.id)
     dart_declaration = 'void set %s(%s)' % (html_name, self._DartType(attr.type.id))
     is_custom = set(['Custom', 'CustomSetter', 'V8CustomSetter']) & set(attr.ext_attrs)
     cpp_callback_name = self._GenerateNativeBinding(attr.id, 2,
@@ -538,7 +537,7 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
     self._GenerateCallWithHandling(attr, parameter_definitions_emitter, arguments)
 
     if 'Reflect' in attr.ext_attrs:
-      webcore_function_name = GetIDLTypeInfo(attr.type.id).webcore_setter_name()
+      webcore_function_name = self._TypeInfo(attr.type.id).webcore_setter_name()
       arguments.append(self._GenerateWebCoreReflectionAttributeName(attr))
     else:
       webcore_function_name = re.sub(r'^(xml(?=[A-Z])|\w)',
@@ -862,7 +861,7 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
   def _GenerateToNative(self, emitter, idl_node, index,
                                 argument_name=None):
     """idl_node is IDLArgument or IDLAttribute."""
-    type_info = GetIDLTypeInfo(idl_node.type.id)
+    type_info = self._TypeInfo(idl_node.type.id)
     self._cpp_impl_includes |= set(type_info.to_native_includes())
     argument_name = argument_name or idl_node.id
     handle = 'Dart_GetNativeArgument(args, %i)' % index
@@ -916,7 +915,7 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
       idl_return_type, attributes, raises_dom_exceptions):
     invocation_template = '        $FUNCTION_CALL;\n'
     if idl_return_type != 'void':
-      return_type_info = GetIDLTypeInfo(idl_return_type)
+      return_type_info = self._TypeInfo(idl_return_type)
       self._cpp_impl_includes |= set(return_type_info.conversion_includes())
 
       # Generate to Dart conversion of C++ value.
@@ -946,6 +945,9 @@ class NativeImplementationGenerator(systembase.BaseGenerator):
     return emitter.Format(invocation_template,
         FUNCTION_CALL='%s(%s)' % (function_expression, ', '.join(arguments)))
 
+  def _TypeInfo(self, type_name):
+    return self._system._type_registry.TypeInfo(type_name)
+
 
 def _GenerateCPPIncludes(includes):
   return ''.join(['#include %s\n' % include for include in sorted(includes)])