Separate CSSValueID mappings generator from ComputedStyleBase generator.

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

Index: third_party/WebKit/Source/build/scripts/make_css_value_id_mappings.py
diff --git a/third_party/WebKit/Source/build/scripts/make_css_value_id_mappings.py b/third_party/WebKit/Source/build/scripts/make_css_value_id_mappings.py
new file mode 100755
index 0000000000000000000000000000000000000000..c484242e346f6ed6cd828bd15a41c72bcd2b54d5
--- /dev/null
+++ b/third_party/WebKit/Source/build/scripts/make_css_value_id_mappings.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+# Copyright 2017 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 json5_generator
+import template_expander
+import make_style_builder
+
+from name_utilities import enum_for_css_keyword, enum_value_name
+
+
+class CSSValueIDMappingsWriter(make_style_builder.StyleBuilderWriter):
+    def __init__(self, json5_file_path):
+        super(CSSValueIDMappingsWriter, self).__init__(json5_file_path)
+        self._outputs = {
+            'CSSValueIDMappingsGenerated.h': self.generate_css_value_mappings,
+        }
+
+        self._mappings = {}
+        self._include_paths = []
+        for property_ in self._properties.values():
+            if property_['field_template'] == 'keyword':
+                if property_['field_type_path']:
+                    type_name = property_['field_type_path'].split('/')[-1]
+                    self._include_paths.append(property_['field_type_path'] + '.h')

[Bugs Nash, 2017/04/03 23:58:55]

this population of self._include_paths didn't seem to occur previously, please
update description with the purpose of this

[shend, 2017/04/04 03:16:32]

It occurred previously, but it was being shared with the other generators. Since
we're pulling this out as a separate file, the logic has to be duplicated in the
new file). It's not doing anything new.

+                else:
+                    type_name = property_['type_name']
+
+                self._mappings[type_name] = {
+                    'default_value': enum_value_name(property_['default_value']),
+                    'mapping': [(enum_value_name(k), enum_for_css_keyword(k)) for k in property_['keywords']],
+                }
+
+    @template_expander.use_jinja('CSSValueIDMappingsGenerated.h.tmpl')
+    def generate_css_value_mappings(self):

[Bugs Nash, 2017/04/03 23:58:55]

this function name is no longer accurate - it doesn't generate the mappings,
just gets them

[shend, 2017/04/04 03:16:32]

I moved the generation code back down to this method

+        return {
+            'include_paths': list(sorted(self._include_paths)),
+            'mappings': self._mappings,
+        }
+
+if __name__ == '__main__':
+    json5_generator.Maker(CSSValueIDMappingsWriter).main()