mercurial/registrar.py

34279:53fb09c73ba8

    DoS attack (False by default).

    Optional argument 'takeorder' indicates whether a predicate function
    takes ordering policy as the last argument.

    'revsetpredicate' instance in example above can be used to
    decorate multiple functions.

    Decorated functions are registered automatically at loading
    extension, if an instance named as 'revsetpredicate' is used for

    Otherwise, explicit 'revset.loadpredicate()' is needed.
    """
    _getname = _funcregistrarbase._parsefuncdecl
    _docformat = "``%s``\n    %s"

    def _extrasetup(self, name, func, safe=False, takeorder=False):
        func._safe = safe
        func._takeorder = takeorder

class filesetpredicate(_funcregistrarbase):
    """Decorator to register fileset predicate

    Usage::

34280:b0790bebfcf8

    DoS attack (False by default).

    Optional argument 'takeorder' indicates whether a predicate function
    takes ordering policy as the last argument.

    Optional argument 'weight' indicates the estimated run-time cost, useful
    for static optimization, default is 1. Higher weight means more expensive.
    Usually, revsets that are fast and return only one revision has a weight of
    0.5 (ex. a symbol); revsets with O(changelog) complexity and read only the
    changelog have weight 10 (ex. author); revsets reading manifest deltas have
    weight 30 (ex. adds); revset reading manifest contents have weight 100
    (ex. contains). Note: those values are flexible. If the revset has a
    same big-O time complexity as 'contains', but with a smaller constant, it
    might have a weight of 90.

    'revsetpredicate' instance in example above can be used to
    decorate multiple functions.

    Decorated functions are registered automatically at loading
    extension, if an instance named as 'revsetpredicate' is used for

    Otherwise, explicit 'revset.loadpredicate()' is needed.
    """
    _getname = _funcregistrarbase._parsefuncdecl
    _docformat = "``%s``\n    %s"

    def _extrasetup(self, name, func, safe=False, takeorder=False, weight=1):
        func._safe = safe
        func._takeorder = takeorder
        func._weight = weight

class filesetpredicate(_funcregistrarbase):
    """Decorator to register fileset predicate

    Usage::