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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Pp
open Errors
open Util
type 'a summary_declaration = {
freeze_function : unit -> 'a;
unfreeze_function : 'a -> unit;
init_function : unit -> unit }
let summaries =
(Hashtbl.create 17 : (string, Dyn.t summary_declaration) Hashtbl.t)
let internal_declare_summary sumname sdecl =
let (infun,outfun) = Dyn.create sumname in
let dyn_freeze () = infun (sdecl.freeze_function())
and dyn_unfreeze sum = sdecl.unfreeze_function (outfun sum)
and dyn_init = sdecl.init_function in
let ddecl = {
freeze_function = dyn_freeze;
unfreeze_function = dyn_unfreeze;
init_function = dyn_init }
in
if Hashtbl.mem summaries sumname then
anomalylabstrm "Summary.declare_summary"
(str "Cannot declare a summary twice: " ++ str sumname);
Hashtbl.add summaries sumname ddecl
let declare_summary sumname decl =
internal_declare_summary (sumname^"-SUMMARY") decl
type frozen = Dyn.t Stringmap.t
let freeze_summaries () =
let m = ref Stringmap.empty in
Hashtbl.iter
(fun id decl -> m := Stringmap.add id (decl.freeze_function()) !m)
summaries;
!m
let unfreeze_summaries fs =
Hashtbl.iter
(fun id decl ->
try decl.unfreeze_function (Stringmap.find id fs)
with Not_found -> decl.init_function())
summaries
let init_summaries () =
Hashtbl.iter (fun _ decl -> decl.init_function()) summaries
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