def __init__(self, file_paths):
assert len(file_paths) >= 3, \
"CSSProperties at least needs both css_properties.json5, \
computed_style_field_aliases.json5 and \
runtime_enabled_features.json5 to function"
# computed_style_field_aliases.json5. Used to expand out parameters used
# in the various generators for ComputedStyle.
self._field_alias_expander = FieldAliasExpander(file_paths[1])
# _alias_offset must be a power of 2.
self._alias_offset = 1024
# 0: CSSPropertyID::kInvalid
# 1: CSSPropertyID::kVariable
self._first_enum_value = 2
self._last_used_enum_value = self._first_enum_value
self._last_high_priority_property = None
self._properties_by_id = {}
self._properties_by_name = {}
self._aliases = []
self._longhands = []
self._shorthands = []
self._properties_including_aliases = []
# Add default data in css_properties.json5. This must be consistent
# across instantiations of this class.
css_properties_file = json5_generator.Json5File.load_from_files(
[file_paths[0]])
self._default_parameters = css_properties_file.parameters
# Map of feature name -> origin trial feature name
origin_trial_features = {}
# TODO(crbug/1031309): Refactor OriginTrialsWriter to reuse logic here.
origin_trials_writer = OriginTrialsWriter([file_paths[2]], "")
for feature in origin_trials_writer.origin_trial_features:
origin_trial_features[str(feature['name'])] = True
self.add_properties(css_properties_file.name_dictionaries,
origin_trial_features)
assert self._first_enum_value + len(self._properties_by_id) < \
self._alias_offset, \
'Property aliasing expects fewer than %d properties.' % \
self._alias_offset
self._last_unresolved_property_id = max(property_["enum_value"]
for property_ in self._aliases)
# Process extra files passed in.
self._extra_fields = []
for i in range(3, len(file_paths)):
fields = json5_generator.Json5File.load_from_files(
[file_paths[i]], default_parameters=self._default_parameters)
self._extra_fields.extend(fields.name_dictionaries)
for field in self._extra_fields:
self.expand_parameters(field)
validate_field(field)
def __init__(self, file_paths):
assert len(file_paths) >= 2, \
"CSSProperties at least needs both css_properties.json5 and \
computed_style_field_aliases.json5 to function"
# computed_style_field_aliases.json5. Used to expand out parameters used
# in the various generators for ComputedStyle.
self._field_alias_expander = FieldAliasExpander(file_paths[1])
# CSSPropertyValueMetadata assumes that there are at most 1024
# properties + aliases.
self._alias_offset = 512
# 0: CSSPropertyID::kInvalid
# 1: CSSPropertyID::kVariable
self._first_enum_value = 2
self._last_used_enum_value = self._first_enum_value
self._properties_by_id = {}
self._properties_by_name = {}
self._aliases = []
self._longhands = []
self._shorthands = []
self._properties_including_aliases = []
# Add default data in css_properties.json5. This must be consistent
# across instantiations of this class.
css_properties_file = json5_generator.Json5File.load_from_files(
[file_paths[0]])
self._default_parameters = css_properties_file.parameters
self.add_properties(css_properties_file.name_dictionaries)
assert self._first_enum_value + len(self._properties_by_id) < \
self._alias_offset, \
'Property aliasing expects fewer than %d properties.' % \
self._alias_offset
self._last_unresolved_property_id = max(property_["enum_value"]
for property_ in self._aliases)
# Process extra files passed in.
self._extra_fields = []
for i in range(2, len(file_paths)):
fields = json5_generator.Json5File.load_from_files(
[file_paths[i]], default_parameters=self._default_parameters)
self._extra_fields.extend(fields.name_dictionaries)
for field in self._extra_fields:
self.expand_parameters(field)