IDL: Generate union type containers

Source/bindings/scripts/code_generator_v8.py

Index: Source/bindings/scripts/code_generator_v8.py
diff --git a/Source/bindings/scripts/code_generator_v8.py b/Source/bindings/scripts/code_generator_v8.py
index 10ceed630ad1ece6e5079ca4b306b7e7b986abee..15d9977f5a350cdf85b7bd8279a6698b123c823d 100644
--- a/Source/bindings/scripts/code_generator_v8.py
+++ b/Source/bindings/scripts/code_generator_v8.py
@@ -103,6 +103,16 @@ def render_template(include_paths, header_template, cpp_template,
     return header_text, cpp_text
 
 
+def set_global_type_info(interfaces_info):
+    idl_types.set_ancestors(interfaces_info['ancestors'])
+    IdlType.set_callback_interfaces(interfaces_info['callback_interfaces'])
+    IdlType.set_dictionaries(interfaces_info['dictionaries'])
+    IdlType.set_implemented_as_interfaces(interfaces_info['implemented_as_interfaces'])
+    IdlType.set_garbage_collected_types(interfaces_info['garbage_collected_interfaces'])
+    IdlType.set_will_be_garbage_collected_types(interfaces_info['will_be_garbage_collected_interfaces'])
+    v8_types.set_component_dirs(interfaces_info['component_dirs'])
+
+
 class CodeGeneratorBase(object):
     """Base class for v8 bindings generator and IDL dictionary impl generator"""
 
@@ -111,15 +121,7 @@ class CodeGeneratorBase(object):
         self.interfaces_info = interfaces_info
         self.jinja_env = initialize_jinja_env(cache_dir)
         self.output_dir = output_dir
-
-        # Set global type info
-        idl_types.set_ancestors(interfaces_info['ancestors'])
-        IdlType.set_callback_interfaces(interfaces_info['callback_interfaces'])
-        IdlType.set_dictionaries(interfaces_info['dictionaries'])
-        IdlType.set_implemented_as_interfaces(interfaces_info['implemented_as_interfaces'])
-        IdlType.set_garbage_collected_types(interfaces_info['garbage_collected_interfaces'])
-        IdlType.set_will_be_garbage_collected_types(interfaces_info['will_be_garbage_collected_interfaces'])
-        v8_types.set_component_dirs(interfaces_info['component_dirs'])
+        set_global_type_info(interfaces_info)
 
     def generate_code(self, definitions, definition_name):
         """Returns .h/.cpp code as ((path, content)...)."""
@@ -248,7 +250,7 @@ class CodeGeneratorDictionaryImpl(CodeGeneratorBase):
         )
 
 
-class CodeGeneratorUnionTypeContainers(object):
+class CodeGeneratorUnionType(object):
     """Generates union type container classes.
     This generator is different from CodeGeneratorV8 and
     CodeGeneratorDictionaryImpl. It assumes that all union types are already
@@ -259,6 +261,7 @@ class CodeGeneratorUnionTypeContainers(object):
         self.jinja_env = initialize_jinja_env(cache_dir)
         self.output_dir = output_dir
         self.target_component = target_component
+        set_global_type_info(interfaces_info)
 
     def generate_code(self, union_types):
         if not union_types:
@@ -266,9 +269,12 @@ class CodeGeneratorUnionTypeContainers(object):
         header_template = self.jinja_env.get_template('union.h')
         cpp_template = self.jinja_env.get_template('union.cpp')
         template_context = v8_union.union_context(
-            sorted(union_types, key=lambda union_type: union_type.name))
+            sorted(union_types, key=lambda union_type: union_type.name),
+            self.interfaces_info)
         template_context['code_generator'] = module_pyname
         capitalized_component = self.target_component.capitalize()
+        template_context['header_filename'] = 'bindings/%s/v8/UnionTypes%s.h' % (
+            self.target_component, capitalized_component)
         template_context['macro_guard'] = 'UnionType%s_h' % capitalized_component
         header_text = header_template.render(template_context)
         cpp_text = cpp_template.render(template_context)