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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Loc
open Names
open Term
open Environ
open Decl_kinds
(** Several proofs can be opened simultaneously but at most one is
focused at some time. The following functions work by side-effect
on current set of open proofs. In this module, ``proofs'' means an
open proof (something started by vernacular command [Goal], [Lemma]
or [Theorem]), and ``goal'' means a subgoal of the current focused
proof *)
(** {6 ... } *)
(** [refining ()] tells if there is some proof in progress, even if a not
focused one *)
val refining : unit -> bool
(** [check_no_pending_proofs ()] fails if there is still some proof in
progress *)
val check_no_pending_proofs : unit -> unit
(** {6 ... } *)
(** [delete_proof name] deletes proof of name [name] or fails if no proof
has this name *)
val delete_proof : Id.t located -> unit
(** [delete_current_proof ()] deletes current focused proof or fails if
no proof is focused *)
val delete_current_proof : unit -> unit
(** [delete_all_proofs ()] deletes all open proofs if any *)
val delete_all_proofs : unit -> unit
(** {6 ... } *)
(** [start_proof s str env t hook tac] starts a proof of name [s] and
conclusion [t]; [hook] is optionally a function to be applied at
proof end (e.g. to declare the built constructions as a coercion
or a setoid morphism); init_tac is possibly a tactic to
systematically apply at initialization time (e.g. to start the
proof of mutually dependent theorems) *)
type lemma_possible_guards = Proof_global.lemma_possible_guards
type universe_binders = Id.t Loc.located list
val start_proof :
Id.t -> ?pl:universe_binders -> goal_kind -> Evd.evar_map -> named_context_val -> constr ->
?init_tac:unit Proofview.tactic ->
Proof_global.proof_terminator -> unit
(** {6 ... } *)
(** [cook_proof opacity] turns the current proof (assumed completed) into
a constant with its name, kind and possible hook (see [start_proof]);
it fails if there is no current proof of if it is not completed;
it also tells if the guardness condition has to be inferred. *)
val cook_this_proof :
Proof_global.proof_object ->
(Id.t *
(Safe_typing.private_constants Entries.definition_entry * Proof_global.proof_universes * goal_kind))
val cook_proof : unit ->
(Id.t *
(Safe_typing.private_constants Entries.definition_entry * Proof_global.proof_universes * goal_kind))
(** {6 ... } *)
(** [get_pftreestate ()] returns the current focused pending proof.
@raise NoCurrentProof if there is no pending proof. *)
val get_pftreestate : unit -> Proof.proof
(** [get_goal_context n] returns the context of the [n]th subgoal of
the current focused proof or raises a [UserError] if there is no
focused proof or if there is no more subgoals *)
val get_goal_context : int -> Evd.evar_map * env
(** [get_current_goal_context ()] works as [get_goal_context 1] *)
val get_current_goal_context : unit -> Evd.evar_map * env
(** [current_proof_statement] *)
val current_proof_statement :
unit -> Id.t * goal_kind * types
(** {6 ... } *)
(** [get_current_proof_name ()] return the name of the current focused
proof or failed if no proof is focused *)
val get_current_proof_name : unit -> Id.t
(** [get_all_proof_names ()] returns the list of all pending proof names.
The first name is the current proof, the other names may come in
any order. *)
val get_all_proof_names : unit -> Id.t list
(** {6 ... } *)
(** [set_end_tac tac] applies tactic [tac] to all subgoal generate
by [solve] *)
val set_end_tac : Tacexpr.raw_tactic_expr -> unit
(** {6 ... } *)
(** [set_used_variables l] declares that section variables [l] will be
used in the proof *)
val set_used_variables :
Id.t list -> Context.section_context * (Loc.t * Names.Id.t) list
val get_used_variables : unit -> Context.section_context option
(** {6 Universe binders } *)
val get_universe_binders : unit -> universe_binders option
(** {6 ... } *)
(** [solve (SelectNth n) tac] applies tactic [tac] to the [n]th
subgoal of the current focused proof or raises a [UserError] if no
proof is focused or if there is no [n]th subgoal. [solve SelectAll
tac] applies [tac] to all subgoals. *)
val solve : ?with_end_tac:unit Proofview.tactic ->
Vernacexpr.goal_selector -> int option -> unit Proofview.tactic ->
Proof.proof -> Proof.proof*bool
(** [by tac] applies tactic [tac] to the 1st subgoal of the current
focused proof or raises a UserError if there is no focused proof or
if there is no more subgoals.
Returns [false] if an unsafe tactic has been used. *)
val by : unit Proofview.tactic -> bool
(** [instantiate_nth_evar_com n c] instantiate the [n]th undefined
existential variable of the current focused proof by [c] or raises a
UserError if no proof is focused or if there is no such [n]th
existential variable *)
val instantiate_nth_evar_com : int -> Constrexpr.constr_expr -> unit
(** [build_by_tactic typ tac] returns a term of type [typ] by calling
[tac]. The return boolean, if [false] indicates the use of an unsafe
tactic. *)
val build_constant_by_tactic :
Id.t -> Evd.evar_universe_context -> named_context_val -> ?goal_kind:goal_kind ->
types -> unit Proofview.tactic ->
Safe_typing.private_constants Entries.definition_entry * bool * Evd.evar_universe_context
val build_by_tactic : ?side_eff:bool -> env -> Evd.evar_universe_context -> ?poly:polymorphic ->
types -> unit Proofview.tactic ->
constr * bool * Evd.evar_universe_context
val refine_by_tactic : env -> Evd.evar_map -> types -> unit Proofview.tactic ->
constr * Evd.evar_map
(** A variant of the above function that handles open terms as well.
Caveat: all effects are purged in the returned term at the end, but other
evars solved by side-effects are NOT purged, so that unexpected failures may
occur. Ideally all code using this function should be rewritten in the
monad. *)
(** Declare the default tactic to fill implicit arguments *)
val declare_implicit_tactic : unit Proofview.tactic -> unit
(** To remove the default tactic *)
val clear_implicit_tactic : unit -> unit
(* Raise Exit if cannot solve *)
(* FIXME: interface: it may incur some new universes etc... *)
val solve_by_implicit_tactic : env -> Evd.evar_map -> Evd.evar -> constr
|
