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(************************************************************************)
(* * The Rocq Prover / The Rocq 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 Evd
open Names
open Environ
open EConstr
open Glob_term
(** {6 Coercions. } *)
type coercion_trace
val empty_coercion_trace : coercion_trace
val reapply_coercions : evar_map -> coercion_trace -> EConstr.t -> EConstr.t
(** [inh_coerce_to_sort env isevars j] coerces [j] to a type; i.e. it
inserts a coercion into [j], if needed, in such a way it gets as
type a sort; it fails if no coercion is applicable *)
val inh_coerce_to_sort : ?loc:Loc.t -> ?use_coercions:bool ->
env -> evar_map -> unsafe_judgment -> evar_map * unsafe_type_judgment
(** [inh_coerce_to_base env isevars j] coerces [j] to its base type; i.e. it
inserts a coercion into [j], if needed, in such a way it gets as
type its base type (the notion depends on the coercion system) *)
val inh_coerce_to_base : ?loc:Loc.t -> program_mode:bool ->
env -> evar_map -> unsafe_judgment -> evar_map * unsafe_judgment
(** [remove_subset env sigma t] applies program mode transformations
to [t], recursively transforming [{x : A | P}] into [A] *)
val remove_subset : env -> evar_map -> types -> types
(** [inh_conv_coerce_to resolve_tc Loc.t env isevars j t] coerces [j] to an
object of type [t]; i.e. it inserts a coercion into [j], if needed, in such
a way [t] and [j.uj_type] are convertible; it fails if no coercion is
applicable. resolve_tc=false disables resolving type classes (as the last
resort before failing) *)
val inh_conv_coerce_to : ?loc:Loc.t -> program_mode:bool -> resolve_tc:bool ->
?use_coercions:bool -> ?patvars_abstract:bool -> env -> evar_map -> ?flags:Evarconv.unify_flags ->
unsafe_judgment -> types -> evar_map * unsafe_judgment * coercion_trace option
val inh_conv_coerce_rigid_to : ?loc:Loc.t -> program_mode:bool -> resolve_tc:bool ->
?use_coercions:bool -> ?patvars_abstract:bool -> env -> evar_map -> ?flags:Evarconv.unify_flags ->
unsafe_judgment -> types -> evar_map * unsafe_judgment * coercion_trace option
(** [inh_pattern_coerce_to loc env isevars pat ind1 ind2] coerces the Cases
pattern [pat] typed in [ind1] into a pattern typed in [ind2];
raises [Not_found] if no coercion found *)
val inh_pattern_coerce_to :
?loc:Loc.t -> env -> cases_pattern -> inductive -> inductive -> cases_pattern
type expected = Type of types | Sort | Product
type hook = env -> evar_map -> flags:Evarconv.unify_flags -> constr ->
inferred:types -> expected:expected -> (evar_map * constr * constr) option
(** A plugin can override the coercion mechanism by registering a hook here.
Note that these hooks will only be trigerred when no direct or reversible
coercion applies.
Newly registered hooks are not active by default, see [activate_hook] below.
The same hook cannot be registered twice, except if [override] is [true].
Beware that this addition is not persistent, it is up to the plugin to use
libobject if needed. *)
val register_hook : name:string -> ?override:bool -> hook -> unit
(** Activate a previously registered hook.
Most recently activated hooks are tried first. *)
val activate_hook : name:string -> unit
(** Deactivate a hook. If the hook wasn't registered/active,
this does nothing. *)
val deactivate_hook : name:string -> unit
type delayed_app_body
val start_app_body : evar_map -> constr -> delayed_app_body
val push_arg : delayed_app_body -> constr -> delayed_app_body
val force_app_body : delayed_app_body -> constr
val reapply_coercions_body : evar_map -> coercion_trace -> delayed_app_body -> delayed_app_body
(** [inh_app_fun resolve_tc env isevars j] coerces [j] to a function; i.e. it
inserts a coercion into [j], if needed, in such a way it gets as
type a product; it returns [j] if no coercion is applicable.
resolve_tc=false disables resolving type classes (as the last
resort before failing) *)
val inh_app_fun : program_mode:bool -> resolve_tc:bool -> ?use_coercions:bool ->
env -> evar_map -> ?flags:Evarconv.unify_flags -> delayed_app_body -> types -> evar_map * delayed_app_body * types * coercion_trace
|
