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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: environ.mli 11001 2008-05-27 16:56:07Z aspiwack $ i*)
(*i*)
open Names
open Term
open Declarations
open Sign
(*i*)
(*s Unsafe environments. We define here a datatype for environments.
Since typing is not yet defined, it is not possible to check the
informations added in environments, and that is why we speak here
of ``unsafe'' environments. *)
(* Environments have the following components:
- a context for de Bruijn variables
- a context for de Bruijn variables vm values
- a context for section variables and goal assumptions
- a context for section variables and goal assumptions vm values
- a context for global constants and axioms
- a context for inductive definitions
- a set of universe constraints
- a flag telling if Set is, can be, or cannot be set impredicative *)
type env
val pre_env : env -> Pre_env.env
val env_of_pre_env : Pre_env.env -> env
type named_context_val
val eq_named_context_val : named_context_val -> named_context_val -> bool
val empty_env : env
val universes : env -> Univ.universes
val rel_context : env -> rel_context
val named_context : env -> named_context
val named_context_val : env -> named_context_val
val engagement : env -> engagement option
(* is the local context empty *)
val empty_context : env -> bool
(************************************************************************)
(*s Context of de Bruijn variables ([rel_context]) *)
val nb_rel : env -> int
val push_rel : rel_declaration -> env -> env
val push_rel_context : rel_context -> env -> env
val push_rec_types : rec_declaration -> env -> env
(* Looks up in the context of local vars referred by indice ([rel_context]) *)
(* raises [Not_found] if the index points out of the context *)
val lookup_rel : int -> env -> rel_declaration
val evaluable_rel : int -> env -> bool
(*s Recurrence on [rel_context] *)
val fold_rel_context :
(env -> rel_declaration -> 'a -> 'a) -> env -> init:'a -> 'a
(************************************************************************)
(* Context of variables (section variables and goal assumptions) *)
val named_context_of_val : named_context_val -> named_context
val named_vals_of_val : named_context_val -> Pre_env.named_vals
val val_of_named_context : named_context -> named_context_val
val empty_named_context_val : named_context_val
(* [map_named_val f ctxt] apply [f] to the body and the type of
each declarations.
*** /!\ *** [f t] should be convertible with t *)
val map_named_val :
(constr -> constr) -> named_context_val -> named_context_val
val push_named : named_declaration -> env -> env
val push_named_context_val :
named_declaration -> named_context_val -> named_context_val
(* Looks up in the context of local vars referred by names ([named_context]) *)
(* raises [Not_found] if the identifier is not found *)
val lookup_named : variable -> env -> named_declaration
val lookup_named_val : variable -> named_context_val -> named_declaration
val evaluable_named : variable -> env -> bool
val named_type : variable -> env -> types
val named_body : variable -> env -> constr option
(*s Recurrence on [named_context]: older declarations processed first *)
val fold_named_context :
(env -> named_declaration -> 'a -> 'a) -> env -> init:'a -> 'a
(* Recurrence on [named_context] starting from younger decl *)
val fold_named_context_reverse :
('a -> named_declaration -> 'a) -> init:'a -> env -> 'a
(* This forgets named and rel contexts *)
val reset_context : env -> env
(* This forgets rel context and sets a new named context *)
val reset_with_named_context : named_context_val -> env -> env
(************************************************************************)
(*s Global constants *)
(*s Add entries to global environment *)
val add_constant : constant -> constant_body -> env -> env
(* Looks up in the context of global constant names *)
(* raises [Not_found] if the required path is not found *)
val lookup_constant : constant -> env -> constant_body
val evaluable_constant : constant -> env -> bool
(*s [constant_value env c] raises [NotEvaluableConst Opaque] if
[c] is opaque and [NotEvaluableConst NoBody] if it has no
body and [Not_found] if it does not exist in [env] *)
type const_evaluation_result = NoBody | Opaque
exception NotEvaluableConst of const_evaluation_result
val constant_value : env -> constant -> constr
val constant_type : env -> constant -> constant_type
val constant_opt_value : env -> constant -> constr option
(************************************************************************)
(*s Inductive types *)
val add_mind : mutual_inductive -> mutual_inductive_body -> env -> env
(* Looks up in the context of global inductive names *)
(* raises [Not_found] if the required path is not found *)
val lookup_mind : mutual_inductive -> env -> mutual_inductive_body
(* Find the ultimate inductive in the [mind_equiv] chain *)
val scrape_mind : env -> mutual_inductive -> mutual_inductive
(************************************************************************)
(*s Modules *)
val add_modtype : module_path -> module_type_body -> env -> env
(* [shallow_add_module] does not add module components *)
val shallow_add_module : module_path -> module_body -> env -> env
val lookup_module : module_path -> env -> module_body
val lookup_modtype : module_path -> env -> module_type_body
val register_alias : module_path -> module_path -> env -> env
val lookup_alias : module_path -> env -> module_path
val scrape_alias : module_path -> env -> module_path
(************************************************************************)
(*s Universe constraints *)
val set_universes : Univ.universes -> env -> env
val add_constraints : Univ.constraints -> env -> env
val set_engagement : engagement -> env -> env
(************************************************************************)
(* Sets of referred section variables *)
(* [global_vars_set env c] returns the list of [id]'s occurring as
[VAR id] in [c] *)
val global_vars_set : env -> constr -> Idset.t
(* the constr must be an atomic construction *)
val vars_of_global : env -> constr -> identifier list
val keep_hyps : env -> Idset.t -> section_context
(************************************************************************)
(*s Unsafe judgments. We introduce here the pre-type of judgments, which is
actually only a datatype to store a term with its type and the type of its
type. *)
type unsafe_judgment = {
uj_val : constr;
uj_type : types }
val make_judge : constr -> types -> unsafe_judgment
val j_val : unsafe_judgment -> constr
val j_type : unsafe_judgment -> types
type unsafe_type_judgment = {
utj_val : constr;
utj_type : sorts }
(*s Compilation of global declaration *)
val compile_constant_body :
env -> constr_substituted option -> bool -> bool -> Cemitcodes.body_code
(* opaque *) (* boxed *)
exception Hyp_not_found
(* [apply_to_hyp sign id f] split [sign] into [tail::(id,_,_)::head] and
return [tail::(f head (id,_,_) (rev tail))::head].
the value associated to id should not change *)
val apply_to_hyp : named_context_val -> variable ->
(named_context -> named_declaration -> named_context -> named_declaration) ->
named_context_val
(* [apply_to_hyp_and_dependent_on sign id f g] split [sign] into
[tail::(id,_,_)::head] and
return [(g tail)::(f (id,_,_))::head]. *)
val apply_to_hyp_and_dependent_on : named_context_val -> variable ->
(named_declaration -> named_context_val -> named_declaration) ->
(named_declaration -> named_context_val -> named_declaration) ->
named_context_val
val insert_after_hyp : named_context_val -> variable ->
named_declaration ->
(named_context -> unit) -> named_context_val
val remove_hyps : identifier list -> (named_declaration -> named_declaration) -> (Pre_env.lazy_val -> Pre_env.lazy_val) -> named_context_val -> named_context_val * identifier list
(* spiwack: functions manipulating the retroknowledge *)
open Retroknowledge
val retroknowledge : (retroknowledge->'a) -> env -> 'a
val registered : env -> field -> bool
val unregister : env -> field -> env
val register : env -> field -> Retroknowledge.entry -> env
(******************************************************************)
(* spiwack: a few declarations for the "Print Assumption" command *)
type context_object =
| Variable of identifier (* A section variable or a Let definition *)
| Axiom of constant (* An axiom or a constant. *)
(* AssumptionSet.t is a set of [assumption] *)
module OrderedContextObject : Set.OrderedType with type t = context_object
module ContextObjectMap : Map.S with type key = context_object
(* collects all the assumptions on which a term relies (together with
their type *)
val assumptions : constr -> env -> Term.types ContextObjectMap.t
|
