Made a generator for .h files for implementations of CSSPropertyAPI.h

third_party/WebKit/Source/build/scripts/make_css_property_descriptor.py

-#!/usr/bin/env python
-# Copyright 2016 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import sys
-
-import in_generator
-import template_expander
-import make_style_builder
-
-from collections import namedtuple, defaultdict
-
-
-# Gets the classname for a given property.
-def get_classname(property):
-    if property['api_class'] is True:
-        # This property had the generated_api_class flag set in CSSProperties.in.
-        return 'CSSPropertyAPI' + property['upper_camel_name']
-    # This property has a specified class name.
-    assert isinstance(property['api_class'], str), \
-        ("api_class value for " + property['api_class'] + " should be None, True or a string")
-    return property['api_class']
-
-
-class CSSPropertyAPIWriter(make_style_builder.StyleBuilderWriter):
-    def __init__(self, in_file_path):
-        super(CSSPropertyAPIWriter, self).__init__(in_file_path)
-        self._outputs = {
-            'CSSPropertyDescriptor.cpp': self.generate_property_descriptor_cpp,
-        }
-
-        # Temporary map of API classname to list of propertyIDs that the API class is for.
-        properties_for_class = defaultdict(list)
-        for property in self._properties.values():
-            if property['api_class'] is None:
-                continue
-            classname = get_classname(property)
-            properties_for_class[classname].append(property['property_id'])
-
-        # Stores a list of classes with elements (index, classname, [propertyIDs, ..]).
-        self._api_classes = []
-
-        ApiClass = namedtuple('ApiClass', ('index', 'classname', 'property_ids'))
-        for i, classname in enumerate(properties_for_class.keys()):
-            self._api_classes.append(ApiClass(
-                index=i + 1,
-                classname=classname,
-                property_ids=properties_for_class[classname]
-            ))
-
-    @template_expander.use_jinja('CSSPropertyDescriptor.cpp.tmpl')
-    def generate_property_descriptor_cpp(self):
-        return {
-            'api_classes': self._api_classes,
-        }
-
-if __name__ == '__main__':
-    in_generator.Maker(CSSPropertyAPIWriter).main(sys.argv)