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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 Constr
open EConstr
open Environ
open Evd
type core_unify_flags = {
modulo_conv_on_closed_terms : TransparentState.t option;
use_metas_eagerly_in_conv_on_closed_terms : bool;
use_evars_eagerly_in_conv_on_closed_terms : bool;
modulo_delta : TransparentState.t;
modulo_delta_types : TransparentState.t;
check_applied_meta_types : bool;
use_pattern_unification : bool;
use_meta_bound_pattern_unification : bool;
allowed_evars : Evarsolve.AllowedEvars.t;
restrict_conv_on_strict_subterms : bool;
modulo_betaiota : bool;
modulo_eta : bool;
}
type unify_flags = {
core_unify_flags : core_unify_flags;
merge_unify_flags : core_unify_flags;
subterm_unify_flags : core_unify_flags;
allow_K_in_toplevel_higher_order_unification : bool;
resolve_evars : bool
}
val default_core_unify_flags : unit -> core_unify_flags
val default_no_delta_core_unify_flags : unit -> core_unify_flags
val default_unify_flags : unit -> unify_flags
val default_no_delta_unify_flags : TransparentState.t -> unify_flags
val elim_flags : unit -> unify_flags
val elim_no_delta_flags : unit -> unify_flags
val is_keyed_unification : unit -> bool
(** The "unique" unification function *)
val w_unify :
env -> evar_map -> conv_pb -> ?flags:unify_flags -> constr -> constr -> evar_map
(** [w_unify_to_subterm env m (c,t)] performs unification of [c] with a
subterm of [t]. Constraints are added to [m] and the matched
subterm of [t] is also returned. *)
val w_unify_to_subterm :
env -> evar_map -> ?flags:unify_flags -> constr * constr -> evar_map * constr
val w_unify_to_subterm_all :
env -> evar_map -> ?flags:unify_flags -> constr * constr -> evar_map list
val w_unify_meta_types : env -> ?flags:unify_flags -> evar_map -> evar_map
(** [w_coerce_to_type env evd c ctyp typ] tries to coerce [c] of type
[ctyp] so that its gets type [typ]; [typ] may contain metavariables *)
val w_coerce_to_type : env -> evar_map -> constr -> types -> types ->
evar_map * constr
(* Looking for subterms in contexts at some occurrences, possibly with pattern*)
exception PatternNotFound
type prefix_of_inductive_support_flag = bool
type abstraction_request =
| AbstractPattern of prefix_of_inductive_support_flag * (types -> bool) * Names.Name.t * (evar_map * constr) * Locus.clause * bool
| AbstractExact of Names.Name.t * constr * types option * Locus.clause * bool
type 'r abstraction_result =
Names.Id.t * named_context_val *
named_declaration list * Names.Id.t option *
types * (evar_map * constr) option
val make_abstraction : env -> evar_map -> constr ->
abstraction_request -> 'r abstraction_result
val pose_all_metas_as_evars : env -> evar_map -> constr -> evar_map * constr
(*i This should be in another module i*)
(** [abstract_list_all env evd t c l]
abstracts the terms in l over c to get a term of type t
(exported for inv.ml) *)
val abstract_list_all :
env -> evar_map -> constr -> constr -> constr list -> evar_map * (constr * types)
(* For tracing *)
type metabinding = (metavariable * constr * (instance_constraint * instance_typing_status))
type subst0 =
(evar_map *
metabinding list *
((Environ.env * int) * existential * t) list)
val w_merge : env -> bool -> core_unify_flags -> subst0 -> evar_map
val unify_0 : Environ.env ->
Evd.evar_map ->
Evd.conv_pb ->
core_unify_flags ->
types ->
types ->
subst0
|
