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|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * Copyright INRIA, CNRS and contributors *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
open Constr
open Names
type pa_constructor =
{ cnode : int;
arity : int;
args : int list}
type pa_fun=
{fsym:int;
fnargs:int}
module PafMap : CSig.MapS with type key = pa_fun
module PacMap : CSig.MapS with type key = pa_constructor
type cinfo =
{ci_constr: pconstructor; (* inductive type *)
ci_arity: int; (* # args *)
ci_nhyps: int} (* # projectable args *)
type term =
Symb of constr
| Product of Sorts.t * Sorts.t
| Eps of Id.t
| Appli of term*term
| Constructor of cinfo (* constructor arity + nhyps *)
module Constrhash : Hashtbl.S with type key = constr
module Termhash : Hashtbl.S with type key = term
type ccpattern =
PApp of term * ccpattern list
| PVar of int
type rule=
Congruence
| Axiom of constr * bool
| Injection of int * pa_constructor * int * pa_constructor * int
type from=
Goal
| Hyp of constr
| HeqG of constr
| HeqnH of constr*constr
type 'a eq = {lhs:int;rhs:int;rule:'a}
type equality = rule eq
type disequality = from eq
type patt_kind =
Normal
| Trivial of types
| Creates_variables
type quant_eq=
{qe_hyp_id: Id.t;
qe_pol: bool;
qe_nvars:int;
qe_lhs: ccpattern;
qe_lhs_valid:patt_kind;
qe_rhs: ccpattern;
qe_rhs_valid:patt_kind}
type inductive_status =
Unknown
| Partial of pa_constructor
| Partial_applied
| Total of (int * pa_constructor)
type representative=
{mutable weight:int;
mutable lfathers:Int.Set.t;
mutable fathers:Int.Set.t;
mutable inductive_status: inductive_status;
class_type : types;
mutable functions: Int.Set.t PafMap.t} (*pac -> term = app(constr,t) *)
type cl = Rep of representative| Eqto of int*equality
type vertex = Leaf| Node of (int*int)
type node =
{mutable clas:cl;
mutable cpath: int;
mutable constructors: int PacMap.t;
vertex:vertex;
term:term}
type forest=
{mutable max_size:int;
mutable size:int;
mutable map: node array;
axioms: (term*term) Constrhash.t;
mutable epsilons: pa_constructor list;
syms: int Termhash.t}
type state
type explanation =
Discrimination of (int*pa_constructor*int*pa_constructor)
| Contradiction of disequality
| Incomplete
type matching_problem
val term_equal : term -> term -> bool
val constr_of_term : term -> constr
val debug_congruence : CDebug.t
val forest : state -> forest
val axioms : forest -> (term * term) Constrhash.t
val epsilons : forest -> pa_constructor list
val empty : int -> Goal.goal Evd.sigma -> state
val add_term : state -> term -> int
val add_equality : state -> constr -> term -> term -> unit
val add_disequality : state -> from -> term -> term -> unit
val add_quant : state -> Id.t -> bool ->
int * patt_kind * ccpattern * patt_kind * ccpattern -> unit
val tail_pac : pa_constructor -> pa_constructor
val find : forest -> int -> int
val find_oldest_pac : forest -> int -> pa_constructor -> int
val term : forest -> int -> term
val get_constructor_info : forest -> int -> cinfo
val subterms : forest -> int -> int * int
val join_path : forest -> int -> int ->
((int * int) * equality) list * ((int * int) * equality) list
val execute : bool -> state -> explanation option
val pr_idx_term : Environ.env -> Evd.evar_map -> forest -> int -> Pp.t
|
