def from_structure(cls, structure: JsonStructure) -> "Predicate":
operators = tuple(filter(Predicate.Operator.has_value, structure.keys()))
if len(operators) != 1:
raise Predicate.InvalidPredicateOperator(
"Each predicate must define exactly one operator."
)
operator = operators[0]
predicate = cls(operator=operator, case_sensitive=structure.get("caseSensitive", True))
predicate.fields_from_structure(structure[operator])
if "xpath" in structure:
predicate.xpath = structure["xpath"]["selector"]
return predicate
def from_structure(structure: JsonStructure) -> "BasePredicate":
if "and" in structure:
return AndPredicate.from_structure(structure)
elif "or" in structure:
return OrPredicate.from_structure(structure)
elif "contains" in structure and "data" in structure["contains"]:
return TcpPredicate.from_structure(structure)
elif "inject" in structure:
return InjectionPredicate.from_structure(structure)
elif set(structure.keys()).intersection(
{o.value
for o in Predicate.Operator}): # pragma: no cover
return Predicate.from_structure(structure)
raise NotImplementedError() # pragma: no cover
