def inner(self, *args):
from types import GeneratorType
from xotl.ql.interfaces import IQueryObject
from xotl.ql.core import these
query, rest = args[0], args[1:]
if rest:
raise SyntaxError('%s only accepts query expressions or query objects')
if isinstance(query, GeneratorType):
query = these(query)
elif not IQueryObject.providedBy(query):
raise SyntaxError('%s only accepts query expressions or query objects')
plan = naive_translation(query, vm=dict(self.vm))
return func(result for result in plan())
def mergable(self, expression):
'Returns true if `expression` is mergeable with the last captured part'
from xoutil.compat import itervalues_
assert context[UNPROXIFING_CONTEXT]
is_expression = IExpressionTree.providedBy
top = self._parts[-1]
if top is expression:
return True
elif is_expression(expression):
result = any(child is top for child in expression.children)
if not result:
return any(child is top
for child in itervalues_(expression.named_children))
else:
return result
elif ITerm.providedBy(expression):
return expression.parent is top
elif IQueryObject.providedBy(expression):
return False
else:
raise TypeError('Parts should be either these instance or '
'expression trees; not %s' % type(expression))
