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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id$ i*)
(*i*)
open Term
open Pattern
open Libnames
open Names
(*i*)
(* Discrimination nets of terms. *)
(* This module registers actions (typically tactics) mapped to patterns *)
(* Patterns are stocked linearly as the list of its node in prefix
order in such a way patterns having the same prefix have this common
prefix shared and the seek for the action associated to the patterns
that a term matches are found in time proportional to the maximal
number of nodes of the patterns matching the term. The [transparent_state]
indicates which constants and variables can be considered as rigid.
These dnets are able to cope with existential variables as well, which match
[Everything]. *)
type 'a t
val create : unit -> 'a t
(* [add t (c,a)] adds to table [t] pattern [c] associated to action [act] *)
val add : 'a t -> transparent_state -> (constr_pattern * 'a) -> 'a t
val rmv : 'a t -> transparent_state -> (constr_pattern * 'a) -> 'a t
(* [lookup t c] looks for patterns (with their action) matching term [c] *)
val lookup : 'a t -> transparent_state -> constr -> (constr_pattern * 'a) list
val app : ((constr_pattern * 'a) -> unit) -> 'a t -> unit
(*i*)
(* These are for Nbtermdn *)
type term_label =
| GRLabel of global_reference
| ProdLabel
| LambdaLabel
| SortLabel of sorts option
val constr_pat_discr_st : transparent_state ->
constr_pattern -> (term_label * constr_pattern list) option
val constr_val_discr_st : transparent_state ->
constr -> (term_label * constr list) Dn.lookup_res
val constr_pat_discr : constr_pattern -> (term_label * constr_pattern list) option
val constr_val_discr : constr -> (term_label * constr list) Dn.lookup_res
(*i*)
|
