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|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \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) *)
(************************************************************************)
(** This file features facilities to generate fresh names. *)
open Names
open Environ
open Evd
open EConstr
(*********************************************************************
Conventional default names *)
val default_prop_ident : Id.t (* "H" *)
val default_small_ident : Id.t (* "H" *)
val default_type_ident : Id.t (* "X" *)
val default_non_dependent_ident : Id.t (* "H" *)
val default_dependent_ident : Id.t (* "x" *)
(*********************************************************************
Generating "intuitive" names from their type *)
val lowercase_first_char : Id.t -> string
val sort_hdchar : Sorts.t -> string
val hdchar : env -> evar_map -> types -> string
val id_of_name_using_hdchar : env -> evar_map -> types -> Name.t -> Id.t
val named_hd : env -> evar_map -> types -> Name.t -> Name.t
val head_name : evar_map -> types -> Id.t option
val mkProd_name : env -> evar_map -> Name.t * types * types -> types
val mkLambda_name : env -> evar_map -> Name.t * types * constr -> constr
(** Deprecated synonyms of [mkProd_name] and [mkLambda_name] *)
val prod_name : env -> evar_map -> Name.t * types * types -> types
val lambda_name : env -> evar_map -> Name.t * types * constr -> constr
val prod_create : env -> evar_map -> types * types -> constr
val lambda_create : env -> evar_map -> types * constr -> constr
val name_assumption : env -> evar_map -> rel_declaration -> rel_declaration
val name_context : env -> evar_map -> rel_context -> rel_context
val mkProd_or_LetIn_name : env -> evar_map -> types -> rel_declaration -> types
val mkLambda_or_LetIn_name : env -> evar_map -> constr -> rel_declaration -> constr
val it_mkProd_or_LetIn_name : env -> evar_map -> types -> rel_context -> types
val it_mkLambda_or_LetIn_name : env -> evar_map -> constr -> rel_context -> constr
(*********************************************************************
Fresh names *)
(** Avoid clashing with a name satisfying some predicate *)
val next_ident_away_from : Id.t -> (Id.t -> bool) -> Id.t
(** [next_ident_away original_id unwanted_ids] returns a new identifier as close as possible
to the [original_id] while avoiding all [unwanted_ids].
In particular:
{ul {- if [original_id] does not appear in the list of [unwanted_ids], then [original_id] is returned.}
{- if [original_id] appears in the list of [unwanted_ids],
then this function returns a new id that:
{ul {- has the same {i root} as the [original_id],}
{- does not occur in the list of [unwanted_ids],}
{- has the smallest possible {i subscript}.}}}}
where by {i subscript} of some identifier we mean last part of it that is composed
only from (decimal) digits and by {i root} of some identifier we mean
the whole identifier except for the {i subscript}.
E.g. if we take [foo42], then [42] is the {i subscript}, and [foo] is the root. *)
val next_ident_away : Id.t -> Id.Set.t -> Id.t
(** Avoid clashing with a name already used in current module *)
val next_ident_away_in_goal : Id.t -> Id.Set.t -> Id.t
(** Avoid clashing with a name already used in current module
but tolerate overwriting section variables, as in goals *)
val next_global_ident_away : Id.t -> Id.Set.t -> Id.t
(** Default is [default_non_dependent_ident] *)
val next_name_away : Name.t -> Id.Set.t -> Id.t
val next_name_away_with_default : string -> Name.t -> Id.Set.t -> Id.t
val next_name_away_with_default_using_types : string -> Name.t ->
Id.Set.t -> types -> Id.t
val set_reserved_typed_name : (types -> Name.t) -> unit
(*********************************************************************
Making name distinct for displaying *)
type renaming_flags =
| RenamingForCasesPattern of (Name.t list * constr) (** avoid only global constructors *)
| RenamingForGoal (** avoid all globals (as in intro) *)
| RenamingElsewhereFor of (Name.t list * constr)
val make_all_name_different : env -> evar_map -> env
val compute_displayed_name_in :
evar_map -> renaming_flags -> Id.Set.t -> Name.t -> constr -> Name.t * Id.Set.t
val compute_and_force_displayed_name_in :
evar_map -> renaming_flags -> Id.Set.t -> Name.t -> constr -> Name.t * Id.Set.t
val compute_displayed_let_name_in :
evar_map -> renaming_flags -> Id.Set.t -> Name.t -> 'a -> Name.t * Id.Set.t
val rename_bound_vars_as_displayed :
evar_map -> Id.Set.t -> Name.t list -> types -> types
(* Generic function expecting a "not occurn" function *)
val compute_displayed_name_in_gen :
(evar_map -> int -> 'a -> bool) ->
evar_map -> Id.Set.t -> Name.t -> 'a -> Name.t * Id.Set.t
(**********************************************************************)
(* Naming strategy for arguments in Prop when eliminating inductive types *)
val use_h_based_elimination_names : unit -> bool
|
