def match(data, query):
"""Checks if `data` object satisfies `query`"""
ast = parser.parse(query)
# validation
KeyExistenceValidatorVisitor(ast).evaluate()
dq = DataQueryVisitor(ast)
return dq.evaluate(data)
def filter(data,
query,
use_nested_keys=True,
key_separator='.',
case_sensitive=True,
raise_keyerror=False):
"""Filters iterable. Checks if each item satisfies `query`"""
ast = parser.parse(query)
dq = DataQueryVisitor(ast,
use_nested_keys=use_nested_keys,
key_separator=key_separator,
case_sensitive=case_sensitive,
raise_keyerror=raise_keyerror)
for item in data:
if not dq.evaluate(item):
continue
yield item
def test_visit_empty(self):
parser = DataQueryParser()
ast = parser.parse('')
dqv = DataQueryVisitor(ast)
self.assertFalse(dqv.evaluate({}))
