Generate HTMLElementFactory with Python

Source/build/scripts/make_element_factory.py

+#!/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 sys
+
+import in_generator
+import template_expander
+import name_utilities
+
+from make_qualified_names import MakeQualifiedNamesWriter
+
+
+def _interface(tag):
+    if tag['interfaceName']:
+        return tag['interfaceName']
+    name = name_utilities.upper_first(tag['name'])
+    # FIXME: We shouldn't hard-code HTML here.
+    if name == 'HTML':
+        name = 'Html'
+    return 'HTML%sElement' % name
+
+
+class MakeElementFactoryWriter(MakeQualifiedNamesWriter):
+    defaults = dict(MakeQualifiedNamesWriter.default_parameters, **{
+        'JSInterfaceName': None,
+        'constructorNeedsCreatedByParser': None,
+        'constructorNeedsFormElement': None,
+        'contextConditional': None,
+        'interfaceName': None,
+        'mapToTagName': None,
+        'noConstructor': None,
+        'wrapperOnlyIfMediaIsAvailable': None,
+    })
+    default_parameters = dict(MakeQualifiedNamesWriter.default_parameters, **{
+        'fallbackInterfaceName': None,
+        'namespacePrefix': None,
+    })
+    filters = dict(MakeQualifiedNamesWriter.filters, **{
+        'interface': _interface,
+    })
+
+    def __init__(self, in_file_paths, enabled_conditions):
+        super(MakeElementFactoryWriter, self).__init__(in_file_paths, enabled_conditions)
+
+        # FIXME: When we start using these element factories, we'll want to
+        # remove the "new" prefix and also have our base class generate
+        # *Names.h and *Names.cpp.
+        self._outputs = {
+            (self.namespace + 'ElementFactory.h'): self.generate_factory_header,
+            (self.namespace + 'ElementFactory.cpp'): self.generate_factory_implementation,
+        }
+
+        self._template_context.update({
+            'fallback_interface': self.tags_in_file.parameters['fallbackInterfaceName'].strip('"')
+        })
+
+    @template_expander.use_jinja('ElementFactory.h.tmpl', filters=filters)
+    def generate_factory_header(self):
+        return self._template_context
+
+    @template_expander.use_jinja('ElementFactory.cpp.tmpl', filters=filters)
+    def generate_factory_implementation(self):
+        return self._template_context
+
+
+if __name__ == "__main__":
+    in_generator.Maker(MakeElementFactoryWriter).main(sys.argv)