"""
Utility functions for supporting the XML Schema Datatypes hierarchy
"""
from __future__ import annotations
from typing import TYPE_CHECKING, Dict, List, Optional, Set
from rdflib.namespace import XSD
if TYPE_CHECKING:
from rdflib.term import URIRef
XSD_DTs: Set[URIRef] = set(
(
XSD.integer,
XSD.decimal,
XSD.float,
XSD.double,
XSD.string,
XSD.boolean,
XSD.dateTime,
XSD.nonPositiveInteger,
XSD.negativeInteger,
XSD.long,
XSD.int,
XSD.short,
XSD.byte,
XSD.nonNegativeInteger,
XSD.unsignedLong,
XSD.unsignedInt,
XSD.unsignedShort,
XSD.unsignedByte,
XSD.positiveInteger,
XSD.date,
)
)
# adding dateTime datatypes
XSD_DateTime_DTs = set((XSD.dateTime, XSD.date, XSD.time))
XSD_Duration_DTs = set((XSD.duration, XSD.dayTimeDuration, XSD.yearMonthDuration))
_sub_types: Dict[URIRef, List[URIRef]] = {
XSD.integer: [
XSD.nonPositiveInteger,
XSD.negativeInteger,
XSD.long,
XSD.int,
XSD.short,
XSD.byte,
XSD.nonNegativeInteger,
XSD.positiveInteger,
XSD.unsignedLong,
XSD.unsignedInt,
XSD.unsignedShort,
XSD.unsignedByte,
],
}
_super_types: Dict[URIRef, URIRef] = {}
for superdt in XSD_DTs:
for subdt in _sub_types.get(superdt, []):
_super_types[subdt] = superdt
# we only care about float, double, integer, decimal
_typePromotionMap: Dict[URIRef, Dict[URIRef, URIRef]] = {
XSD.float: {XSD.integer: XSD.float, XSD.decimal: XSD.float, XSD.double: XSD.double},
XSD.double: {
XSD.integer: XSD.double,
XSD.float: XSD.double,
XSD.decimal: XSD.double,
},
XSD.decimal: {
XSD.integer: XSD.decimal,
XSD.float: XSD.float,
XSD.double: XSD.double,
},
XSD.integer: {
XSD.decimal: XSD.decimal,
XSD.float: XSD.float,
XSD.double: XSD.double,
},
}
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