IDL roll.

core/scripts/make_event_factory.py

Index: core/scripts/make_event_factory.py
===================================================================
--- core/scripts/make_event_factory.py	(revision 0)
+++ core/scripts/make_event_factory.py	(revision 0)
@@ -0,0 +1,101 @@
+#!/usr/bin/env 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.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import os.path
+import sys
+import shutil
+
+from in_file import InFile
+import in_generator
+import license
+
+
+IMPLEMENTATION_TEMPLATE = """%(license)s
+#include "config.h"
+#include "%(namespace)sFactory.h"
+
+#include "%(namespace)sHeaders.h"
+#include "RuntimeEnabledFeatures.h"
+
+namespace WebCore {
+
+PassRefPtr<%(namespace)s> %(namespace)sFactory::create(const String& type)
+{
+%(factory_implementation)s
+    return 0;
+}
+
+} // namespace WebCore
+"""
+
+
+class EventFactoryWriter(in_generator.Writer):
+    defaults = {
+        'interfaceName' : None,
+        'conditional' : None,
+        'runtimeConditional': None,
+    }
+    default_parameters = {
+        'namespace': '',
+    }
+    class_name = 'EventFactory'
+
+    def _namespace(self):
+        return self.in_file.parameters['namespace']
+
+    def _events(self):
+        return self.in_file.name_dictionaries
+
+    def _factory_implementation(self, event):
+        runtime_condition = ''
+        if event['runtimeConditional']:
+            runtime_condition = ' && RuntimeEnabledFeatures::' + event['runtimeConditional'] + '()'
+        name = os.path.basename(event['name'])
+        interface_name = event['interfaceName'] if event['interfaceName'] else name
+        implementation = """    if (type == "%(name)s"%(runtime_condition)s)
+        return %(interface_name)s::create();""" % {
+            'name': name,
+            'runtime_condition': runtime_condition,
+            'interface_name': interface_name,
+        }
+        return self.wrap_with_condition(implementation, event['conditional'])
+
+    def generate_header(self):
+        pass
+
+    def generate_implementation(self):
+        return IMPLEMENTATION_TEMPLATE % {
+            'namespace': self._namespace().strip('"'),
+            'license': license.license_for_generated_cpp(),
+            'factory_implementation': "\n".join(map(self._factory_implementation, self._events())),
+        }
+
+
+if __name__ == "__main__":
+    in_generator.Maker(EventFactoryWriter).main(sys.argv)