# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

from portage.util.SlotObject import SlotObject


class Task(SlotObject):
    __slots__ = ("_hash_key", "_hash_value")

    def __eq__(self, other):
        try:
            return self._hash_key == other._hash_key
        except AttributeError:
            # depgraph._pkg() generates _hash_key
            # for lookups here, so handle that
            return self._hash_key == other

    def __ne__(self, other):
        try:
            return self._hash_key != other._hash_key
        except AttributeError:
            return True

    def __hash__(self):
        return self._hash_value

    def __len__(self):
        return len(self._hash_key)

    def __getitem__(self, key):
        return self._hash_key[key]

    def __iter__(self):
        return iter(self._hash_key)

    def __contains__(self, key):
        return key in self._hash_key

    def __str__(self):
        """
        Emulate tuple.__repr__, but don't show 'foo' as u'foo' for unicode
        strings.
        """
        return "(%s)" % ", ".join(("'%s'" % x for x in self._hash_key))

    def __repr__(self):
        if self._hash_key is None:
            # triggered by python-trace
            return SlotObject.__repr__(self)
        return "<%s (%s)>" % (
            self.__class__.__name__,
            ", ".join(("'%s'" % x for x in self._hash_key)),
        )