diff options
Diffstat (limited to 'lib/protocols/Generative.mli')
| -rw-r--r-- | lib/protocols/Generative.mli | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/protocols/Generative.mli b/lib/protocols/Generative.mli index 14e2c13..5ada329 100644 --- a/lib/protocols/Generative.mli +++ b/lib/protocols/Generative.mli @@ -16,9 +16,20 @@ val modes : t Handle.interface -> (Concepts.Mode.t, Concepts.Condition.condition (** a handle carrying a cursor over the members agreeing with the binding and under the empty binding this is enumeration, so a - relation carrying enumerable answers the same members here. *) + relation carrying enumerable answers the same members here. Refused + when no declared mode generates under the attributes bound. *) val generate : t Handle.interface -> binding -> (Handle.t, Concepts.Condition.condition) result val nothing : binding val bound : binding -> Concepts.Mode.attributes val satisfies : binding -> Concepts.Tuple.t -> bool + +(** membership for a relation with no lookup of its own, asked of the + generator under the binding the tuple fixes. Only a tuple carrying + exactly the [heading] can be a member, and it must match one whole. *) +class virtual membership : object + val virtual heading : Concepts.Mode.attributes + method virtual modes : (Concepts.Mode.t, Concepts.Condition.condition) result + method virtual generate : binding -> (Handle.t, Concepts.Condition.condition) result + method contains : Concepts.Tuple.t -> (bool, Concepts.Condition.condition) result +end |