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+(************************************************************************)
+(*         *   The Coq Proof Assistant / The Coq Development Team       *)
+(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
+(* <O___,, *       (see CREDITS file for the list of authors)           *)
+(*   \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 Util
+open Names
+open EConstr
+open Misctypes
+open Genarg
+open Geninterp
+
+(** Coercions from highest level generic arguments to actual data used by Ltac
+    interpretation. Those functions examinate dynamic types and try to return
+    something sensible according to the object content. *)
+
+exception CannotCoerceTo of string
+(** Exception raised whenever a coercion failed. *)
+
+(** {5 High-level access to values}
+
+  The [of_*] functions cast a given argument into a value. The [to_*] do the
+  converse, and return [None] if there is a type mismatch.
+
+*)
+
+module Value :
+sig
+  type t = Val.t
+
+  val of_constr : constr -> t
+  val to_constr : t -> constr option
+  val of_uconstr : Ltac_pretype.closed_glob_constr -> t
+  val to_uconstr : t -> Ltac_pretype.closed_glob_constr option
+  val of_int : int -> t
+  val to_int : t -> int option
+  val to_list : t -> t list option
+  val to_option : t -> t option option
+  val to_pair : t -> (t * t) option
+  val cast : 'a typed_abstract_argument_type -> Geninterp.Val.t -> 'a
+end
+
+(** {5 Coercion functions} *)
+
+val coerce_to_constr_context : Value.t -> constr
+
+val coerce_var_to_ident : bool -> Environ.env -> Evd.evar_map -> Value.t -> Id.t
+
+val coerce_to_ident_not_fresh : Environ.env -> Evd.evar_map -> Value.t -> Id.t
+
+val coerce_to_intro_pattern : Environ.env -> Evd.evar_map -> Value.t -> Tacexpr.delayed_open_constr intro_pattern_expr
+
+val coerce_to_intro_pattern_naming :
+  Environ.env -> Evd.evar_map -> Value.t -> intro_pattern_naming_expr
+
+val coerce_to_hint_base : Value.t -> string
+
+val coerce_to_int : Value.t -> int
+
+val coerce_to_constr : Environ.env -> Value.t -> Ltac_pretype.constr_under_binders
+
+val coerce_to_uconstr : Environ.env -> Value.t -> Ltac_pretype.closed_glob_constr
+
+val coerce_to_closed_constr : Environ.env -> Value.t -> constr
+
+val coerce_to_evaluable_ref :
+  Environ.env -> Evd.evar_map -> Value.t -> evaluable_global_reference
+
+val coerce_to_constr_list : Environ.env -> Value.t -> constr list
+
+val coerce_to_intro_pattern_list :
+  ?loc:Loc.t -> Environ.env -> Evd.evar_map -> Value.t -> Tacexpr.intro_patterns
+
+val coerce_to_hyp : Environ.env -> Evd.evar_map -> Value.t -> Id.t
+
+val coerce_to_hyp_list : Environ.env -> Evd.evar_map -> Value.t -> Id.t list
+
+val coerce_to_reference : Environ.env -> Evd.evar_map -> Value.t -> Globnames.global_reference
+
+val coerce_to_quantified_hypothesis : Evd.evar_map -> Value.t -> quantified_hypothesis
+
+val coerce_to_decl_or_quant_hyp : Environ.env -> Evd.evar_map -> Value.t -> quantified_hypothesis
+
+val coerce_to_int_or_var_list : Value.t -> int or_var list
+
+(** {5 Missing generic arguments} *)
+
+val wit_constr_context : (Empty.t, Empty.t, EConstr.constr) genarg_type
+
+val wit_constr_under_binders : (Empty.t, Empty.t, Ltac_pretype.constr_under_binders) genarg_type
+
+val error_ltac_variable : ?loc:Loc.t -> Id.t ->
+  (Environ.env * Evd.evar_map) option -> Value.t -> string -> 'a
+
+(** Abstract application, to print ltac functions *)
+type appl =
+  | UnnamedAppl (** For generic applications: nothing is printed *)
+  | GlbAppl of (Names.KerName.t * Val.t list) list
+       (** For calls to global constants, some may alias other. *)
+
+type tacvalue =
+  | VFun of appl*Tacexpr.ltac_trace * Val.t Id.Map.t *
+      Name.t list * Tacexpr.glob_tactic_expr
+  | VRec of Val.t Id.Map.t ref * Tacexpr.glob_tactic_expr
+
+val wit_tacvalue : (Empty.t, tacvalue, tacvalue) Genarg.genarg_type
+
+val pr_value : (Environ.env * Evd.evar_map) option -> Geninterp.Val.t -> Pp.t