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|
(***********************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *)
(* \VV/ *************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(***********************************************************************)
(*i $Id$ *)
(*i*)
open Util
open Names
open Closure
open Summary
open Term
open Declarations
(*i*)
let tr_state = ref all_transparent
let state () = !tr_state
let _ =
declare_summary "Transparent constants and variables"
{ freeze_function = state;
unfreeze_function = (fun ts -> tr_state := ts);
init_function = (fun () -> tr_state := all_transparent);
survive_section = false }
let is_evaluable env ref =
match ref with
EvalConstRef sp ->
let (ids,sps) = !tr_state in
Sppred.mem sp sps &
let cb = Environ.lookup_constant sp env in
cb.const_body <> None & not cb.const_opaque
| EvalVarRef id ->
let (ids,sps) = !tr_state in
Idpred.mem id ids &
let (_,value,_) = Environ.lookup_named id env in
value <> None
(* Modifying this state *)
let set_opaque_const sp =
let (ids,sps) = !tr_state in
tr_state := (ids, Sppred.remove sp sps)
let set_transparent_const sp =
let (ids,sps) = !tr_state in
let cb = Global.lookup_constant sp in
if cb.const_body <> None & cb.const_opaque then
let s = string_of_path sp in
error ("Cannot make "^s^" transparent because it was declared opaque.");
tr_state := (ids, Sppred.add sp sps)
let set_opaque_var id =
let (ids,sps) = !tr_state in
tr_state := (Idpred.remove id ids, sps)
let set_transparent_var id =
let (ids,sps) = !tr_state in
tr_state := (Idpred.add id ids, sps)
|
