Source code for xsdata.codegen.handlers.attribute_merge

from typing import List

from xsdata.codegen.mixins import HandlerInterface
from xsdata.codegen.models import Attr
from xsdata.codegen.models import Class
from xsdata.utils import collections


[docs]class AttributeMergeHandler(HandlerInterface): """Merge same type attributes and their restrictions."""
[docs] @classmethod def process(cls, target: Class): """ Detect same type attributes in order to merge them together with their restrictions. Two attributes are considered equal if they have the same name, types and namespace. """ result: List[Attr] = [] for attr in target.attrs: pos = collections.find(result, attr) existing = result[pos] if pos > -1 else None if not existing: result.append(attr) elif not (attr.is_attribute or attr.is_enumeration): min_occurs = existing.restrictions.min_occurs or 0 max_occurs = existing.restrictions.max_occurs or 1 attr_min_occurs = attr.restrictions.min_occurs or 0 attr_max_occurs = attr.restrictions.max_occurs or 1 existing.restrictions.min_occurs = min(min_occurs, attr_min_occurs) existing.restrictions.max_occurs = max_occurs + attr_max_occurs existing.fixed = False existing.restrictions.sequential = ( existing.restrictions.sequential or attr.restrictions.sequential ) target.attrs = result