Added api_methods flag to CSSProperties.json5.

third_party/WebKit/Source/build/scripts/make_css_property_apis.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 json5_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.json5.
         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, json5_file_path):
+        # Holds names of all valid methods in the API. When a new method is added
+        # to the API, it must also be added to this list.
+        valid_methods = ["parseSingleValue"]
+
         super(CSSPropertyAPIWriter, self).__init__(json5_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'])
-            self._outputs[classname + '.h'] = self.generate_property_api_h_builder(classname)
+            for method in property['api_methods']:
+                assert method in valid_methods, 'Invalid method ' + method + \
+                    '. Methods added to the API must also be added to list of valid methods.'

[nainar, 2017/01/31 03:21:19]

valid methods -> valid_methods

+            self._outputs[classname + '.h'] = self.generate_property_api_h_builder(classname, property['api_methods'])
 
         # 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,
         }
 
     # Provides a function object given the classname of the property.
     # This returned function generates a .h file for the specified property.
-    def generate_property_api_h_builder(self, api_classname):
+    def generate_property_api_h_builder(self, api_classname, implemented_functions):
         @template_expander.use_jinja('CSSPropertyAPIFiles.h.tmpl')
         def generate_property_api_h():
             return {
                 'api_classname': api_classname,
+                'implemented_functions': implemented_functions,
             }
         return generate_property_api_h
 
 if __name__ == '__main__':
     json5_generator.Maker(CSSPropertyAPIWriter).main()