def _create_inherited_flag_field(property_):
"""
Create the field used for an inheritance fast path from an independent CSS
property, and return the Field object.
"""
name_for_methods = NameStyleConverter(
property_['name_for_methods']).to_function_name(
suffix=['is', 'inherited'])
name_source = NameStyleConverter(name_for_methods)
return Field(
'inherited_flag',
name_for_methods,
property_name=property_['name'].original,
type_name='bool',
wrapper_pointer_name=None,
field_template='primitive',
size=1,
default_value='true',
custom_copy=False,
custom_compare=False,
mutable=False,
getter_method_name=name_source.to_function_name(),
setter_method_name=name_source.to_function_name(prefix='set'),
initial_method_name=name_source.to_function_name(prefix='initial'),
computed_style_custom_functions=property_[
"computed_style_custom_functions"],
)
def __init__(self, field_role, name_for_methods, property_name, type_name,
wrapper_pointer_name, field_template, size, default_value,
custom_copy, custom_compare, mutable, getter_method_name,
setter_method_name, initial_method_name,
computed_style_custom_functions, **kwargs):
name_source = NameStyleConverter(name_for_methods)
self.name = name_source.to_class_data_member()
self.property_name = property_name
self.type_name = type_name
self.wrapper_pointer_name = wrapper_pointer_name
self.alignment_type = self.wrapper_pointer_name or self.type_name
self.field_template = field_template
self.size = size
self.default_value = default_value
self.custom_copy = custom_copy
self.custom_compare = custom_compare
self.mutable = mutable
self.group = None
# Method names
self.getter_method_name = getter_method_name
self.setter_method_name = setter_method_name
self.internal_getter_method_name = name_source.to_function_name(
suffix='internal')
self.internal_mutable_method_name = name_source.to_function_name(
prefix='mutable', suffix='internal')
self.internal_setter_method_name = NameStyleConverter(
setter_method_name).to_function_name(suffix='internal')
self.initial_method_name = initial_method_name
self.resetter_method_name = name_source.to_function_name(
prefix='reset')
self.computed_style_custom_functions = computed_style_custom_functions
# Only bitfields have sizes.
self.is_bit_field = self.size is not None
# Field role: one of these must be true
self.is_property = field_role == 'property'
self.is_inherited_flag = field_role == 'inherited_flag'
assert (self.is_property, self.is_inherited_flag).count(True) == 1, \
'Field role has to be exactly one of: property, inherited_flag'
if not self.is_inherited_flag:
self.is_inherited = kwargs.pop('inherited')
self.is_independent = kwargs.pop('independent')
self.is_semi_independent_variable = kwargs.pop(
'semi_independent_variable')
assert self.is_inherited or not self.is_independent, \
'Only inherited fields can be independent'
self.is_inherited_method_name = name_source.to_function_name(
suffix=['is', 'inherited'])
assert len(kwargs) == 0, \
'Unexpected arguments provided to Field: ' + str(kwargs)