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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 EConstr
open Evd
open Environ
val env_nf_evar : evar_map -> env -> env
val env_nf_betaiotaevar : evar_map -> env -> env
type type_constraint = types option
type val_constraint = constr option
val empty_tycon : type_constraint
val mk_tycon : constr -> type_constraint
val empty_valcon : val_constraint
val mk_valcon : constr -> val_constraint
(** Instantiate an evar by as many lambda's as needed so that its arguments
are moved to the evar substitution (i.e. turn [?x[vars1:=args1] args] into
[?y[vars1:=args1,vars:=args]] with
[vars1 |- ?x:=\vars.?y[vars1:=vars1,vars:=vars]] *)
val evar_absorb_arguments : env -> evar_map -> existential -> constr list ->
evar_map * existential
val split_as_array : env -> evar_map -> type_constraint ->
evar_map * type_constraint
(** If the constraint can be made to look like [array A] return [A],
otherwise return [None] (this makes later coercion possible). *)
val valcon_of_tycon : type_constraint -> val_constraint
val lift_tycon : int -> type_constraint -> type_constraint
val define_evar_as_product : env -> evar_map -> existential -> evar_map * types
val define_evar_as_lambda : env -> evar_map -> existential -> evar_map * types
val define_evar_as_sort : env -> evar_map -> existential -> evar_map * Sorts.t
(** {6 debug pretty-printer:} *)
val pr_tycon : env -> evar_map -> type_constraint -> Pp.t
(** Used for bidi heuristic when typing lambdas. Transforms an applied
evar to an evar with bigger context (ie ?X e to ?X'@{y=e}). *)
val presplit : env -> evar_map -> EConstr.t -> evar_map * EConstr.t
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