"""Contains predicates used in Pyramid views.

"""

class MatchIsETypePredicate(object):

    """A predicate that match if a given etype exist in schema.

    """

    def __init__(self, matchname, config):

        self.matchname = matchname

    def text(self):

        return 'match_is_etype = %s' % self.matchname

    phash = text

    def __call__(self, info, request):

        return info['match'][self.matchname].lower() in \

            request.registry['cubicweb.registry'].case_insensitive_etypes

def includeme(config):

    config.add_route_predicate('match_is_etype', MatchIsETypePredicate)