def UnionFieldFromMojom(self, mojom_field):
"""Translates a mojom_types_mojom.UnionField to a module.UnionField.
Args:
mojom_field: {mojom_types_mojom.UnionField} to be translated.
Returns:
{module.UnionField} translated from mojom_field.
"""
union_field = module.UnionField()
self.PopulateCommonFieldValues(union_field, mojom_field)
union_field.ordinal = self.OrdinalFromMojom(mojom_field)
return union_field
def _UnionField(module, parsed_field, union):
"""
Args:
module: {mojom.Module} Module currently being constructed.
parsed_field: {ast.UnionField} Parsed union field.
union: {mojom.Union} Union this fields belong to.
Returns:
{mojom.UnionField} AST union.
"""
field = mojom.UnionField()
field.mojom_name = parsed_field.mojom_name
field.kind = _Kind(module.kinds, _MapKind(parsed_field.typename),
(module.mojom_namespace, union.mojom_name))
field.ordinal = parsed_field.ordinal.value if parsed_field.ordinal else None
field.default = _FixupExpression(
module, None, (module.mojom_namespace, union.mojom_name), field.kind)
field.attributes = _AttributeListToDict(parsed_field.attribute_list)
return field
def UnionFieldFromMojom(self, mojom_field):
"""Translates a fidl_types_fidl.UnionField to a module.UnionField.
Args:
mojom_field: {fidl_types_fidl.UnionField} to be translated.
Returns:
{module.UnionField} translated from mojom_field.
"""
union_field = module.UnionField()
self.PopulateCommonFieldValues(union_field, mojom_field)
# The |ordinal| attribute of |union_field| contains the field's tag
# as computed by the Mojom front-end.
union_field.ordinal = mojom_field.tag
# The |declared_tag| field is populated only if the user explicitly
# specified a tag for the field in the .mojom file and as such is not
# defined for every field. If defined it is equal to the |ordinal|
# attribute. Currently no code generators are consuming this data.
union_field.declared_tag = self.OrdinalFromMojom(mojom_field)
# The declaration_order field preserves the index of the field in
# declaration order in the .mojom file.
union_field.declaration_order = mojom_field.decl_data.declaration_order
return union_field
def UnionFieldFromData(module, data, union):
field = mojom.UnionField()
PopulateField(field, module, data, union)
return field