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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Term
open Evd
open Environ
type unification_result =
| Success of evar_map
| UnifFailure of evar_map * Pretype_errors.unification_error
val is_success : unification_result -> bool
(** Replace the vars and rels that are aliases to other vars and rels by
their representative that is most ancient in the context *)
val expand_vars_in_term : env -> constr -> constr
(** [evar_define choose env ev c] try to instantiate [ev] with [c] (typed in [env]),
possibly solving related unification problems, possibly leaving open
some problems that cannot be solved in a unique way (except if choose is
true); fails if the instance is not valid for the given [ev] *)
type conv_fun =
env -> evar_map -> conv_pb -> constr -> constr -> unification_result
type conv_fun_bool =
env -> evar_map -> conv_pb -> constr -> constr -> bool
val evar_define : conv_fun -> ?choose:bool -> env -> evar_map ->
bool option -> existential -> constr -> evar_map
val refresh_universes : ?inferred:bool -> ?onlyalg:bool (* Only algebraic universes *) ->
bool option (* direction: true for levels lower than the existing levels *) ->
env -> evar_map -> types -> evar_map * types
val solve_refl : ?can_drop:bool -> conv_fun_bool -> env -> evar_map ->
bool option -> existential_key -> constr array -> constr array -> evar_map
val solve_evar_evar : ?force:bool ->
(env -> evar_map -> bool option -> existential -> constr -> evar_map) ->
conv_fun ->
env -> evar_map -> bool option -> existential -> existential -> evar_map
val solve_simple_eqn : conv_fun -> ?choose:bool -> env -> evar_map ->
bool option * existential * constr -> unification_result
val reconsider_conv_pbs : conv_fun -> evar_map -> unification_result
val is_unification_pattern_evar : env -> evar_map -> existential -> constr list ->
constr -> constr list option
val is_unification_pattern : env * int -> evar_map -> constr -> constr list ->
constr -> constr list option
val solve_pattern_eqn : env -> constr list -> constr -> constr
exception IllTypedInstance of env * types * types
(* May raise IllTypedInstance if types are not convertible *)
val check_evar_instance :
evar_map -> existential_key -> constr -> conv_fun -> evar_map
val remove_instance_local_defs :
evar_map -> existential_key -> constr array -> constr list
|
