(************************************************************************)
(*         *   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)         *)
(************************************************************************)

(** This module implements pretty-printers for constr_expr syntactic
    objects and their subcomponents. *)

(** The default pretty-printers produce pretty-printing commands ({!Pp.t}). *)
open Libnames
open Constrexpr
open Names

val prec_less : entry_level -> entry_relative_level -> bool

val pr_tight_coma : unit -> Pp.t

val pr_with_comments : ?loc:Loc.t -> Pp.t -> Pp.t
val pr_com_at : int -> Pp.t
val pr_sep_com :
  (unit -> Pp.t) ->
  (constr_expr -> Pp.t) ->
  constr_expr -> Pp.t

val pr_id : Id.t -> Pp.t

val pr_qualid : qualid -> Pp.t
val pr_patvar : Pattern.patvar -> Pp.t

val pr_sort_name_expr : sort_name_expr -> Pp.t
val pr_univ_level_expr : univ_level_expr -> Pp.t
val pr_sort_expr : sort_expr -> Pp.t
val pr_guard_annot
  :  (constr_expr -> Pp.t)
  -> local_binder_expr list
  -> recursion_order_expr option
  -> Pp.t

val pr_record : string -> string -> ('a -> Pp.t) -> 'a list -> Pp.t
val pr_record_body : string -> string -> ('a -> Pp.t) -> (Libnames.qualid * 'a) list -> Pp.t
val pr_binders : Environ.env -> Evd.evar_map -> local_binder_expr list -> Pp.t
val pr_constr_pattern_expr : Environ.env -> Evd.evar_map -> constr_pattern_expr -> Pp.t
val pr_lconstr_pattern_expr : Environ.env -> Evd.evar_map -> constr_pattern_expr -> Pp.t
val pr_constr_expr : Environ.env -> Evd.evar_map -> constr_expr -> Pp.t
val pr_lconstr_expr : Environ.env -> Evd.evar_map -> constr_expr -> Pp.t
val pr_cases_pattern_expr : cases_pattern_expr -> Pp.t
val pr_constr_expr_n : Environ.env -> Evd.evar_map -> entry_relative_level -> constr_expr -> Pp.t

type term_pr = {
  pr_constr_expr : Environ.env -> Evd.evar_map -> constr_expr -> Pp.t;
  pr_lconstr_expr : Environ.env -> Evd.evar_map -> constr_expr -> Pp.t;
  pr_constr_pattern_expr : Environ.env -> Evd.evar_map -> constr_pattern_expr -> Pp.t;
  pr_lconstr_pattern_expr : Environ.env -> Evd.evar_map -> constr_pattern_expr -> Pp.t
}

val set_term_pr : term_pr -> unit
val default_term_pr : term_pr

(* The modular constr printer.
  [modular_constr_pr pr s p t] prints the head of the term [t] and calls
  [pr] on its subterms.
  [s] is typically {!Pp.mt} and [p] is [lsimpleconstr] for "constr" printers
  and [ltop] for "lconstr" printers (spiwack: we might need more
  specification here).
  We can make a new modular constr printer by overriding certain branches,
  for instance if we want to build a printer which prints "Prop" as "Omega"
  instead we can proceed as follows:
  let my_modular_constr_pr pr s p = function
  | CSort (_,GProp Null) -> str "Omega"
  | t -> modular_constr_pr pr s p t
  Which has the same type. We can turn a modular printer into a printer by
  taking its fixpoint. *)

val lsimpleconstr : entry_relative_level
val ltop : entry_relative_level
val modular_constr_pr :
  ((unit->Pp.t) -> entry_relative_level -> constr_expr -> Pp.t) ->
  (unit->Pp.t) -> entry_relative_level -> constr_expr -> Pp.t