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(*i $Id$ i*)
(*i*)
open Names
open Term
open Sign
open Evd
open Environ
open Reduction
(*i*)
(*s This modules provides useful functions for unification modulo evars *)
val evar_env : 'a evar_info -> env
val dummy_sort : constr
type evar_constraint = conv_pb * constr * constr
type 'a evar_defs = 'a evar_map ref
val reset_problems : unit -> unit
val add_conv_pb : evar_constraint -> unit
val ise_try : 'a evar_defs -> (unit -> bool) list -> bool
val ise_undefined : 'a evar_defs -> constr -> bool
val has_undefined_isevars : 'a evar_defs -> constr -> bool
val make_evar_instance : env -> constr list
val new_isevar : 'a evar_defs -> env -> constr -> path_kind -> constr
val is_eliminator : constr -> bool
val head_is_embedded_evar : 'a evar_defs -> constr -> bool
val solve_simple_eqn :
(env -> 'a evar_defs -> conv_pb -> constr -> constr -> bool)
-> env -> 'a evar_defs -> conv_pb * existential * constr -> bool
(* Value/Type constraints *)
type type_constraint = constr 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
val split_tycon :
Rawterm.loc -> env -> 'a evar_defs -> type_constraint ->
type_constraint * type_constraint
val valcon_of_tycon : type_constraint -> val_constraint
(* $Id$ *)
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