module ContextTable: sig .. end
A context table is a hash table mapping contents to values. If a context
is garbage collected, the corresponding entry in the table will be
removed. The values stored in a context table should have pointers back
to their associated context.
type 'a t
val create : int -> 'a t
val add : 'a t -> 'b Syntax.context -> 'a -> unit
val replace : 'a t -> 'b Syntax.context -> 'a -> unit
val find : 'a t -> 'b Syntax.context -> 'a
val mem : 'a t -> 'b Syntax.context -> bool
val clear : 'a t -> unit