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author | gareuselesinge <gareuselesinge@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2013-08-09 06:09:52 +0000 |
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committer | gareuselesinge <gareuselesinge@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2013-08-09 06:09:52 +0000 |
commit | 6410e8c242d50eb0571d0e6feea4526979c8b0b2 (patch) | |
tree | 2eac7acf7ba6008b45727742f33cc0ef60c65e99 /lib/stateid.ml | |
parent | dc6c9c950700a9707ff1f473ef687f0bda597eb3 (diff) |
state_id data type
(this should have been the first commit of Paral-ITP)
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16688 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'lib/stateid.ml')
-rw-r--r-- | lib/stateid.ml | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/stateid.ml b/lib/stateid.ml new file mode 100644 index 000000000..3abd80cfb --- /dev/null +++ b/lib/stateid.ml @@ -0,0 +1,37 @@ +(************************************************************************) +(* 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 Xml_datatype + +type state_id = int +let initial_state_id = 1 +let dummy_state_id = 0 +let fresh_state_id, in_range = + let cur = ref initial_state_id in + (fun () -> incr cur; !cur), (fun id -> id >= 0 && id <= !cur) +let string_of_state_id = string_of_int +let state_id_of_int id = assert(in_range id); id +let int_of_state_id id = id +let newer_than id1 id2 = id1 > id2 + +let to_state_id = function + | Element ("state_id",["val",i],[]) -> + let id = int_of_string i in + (* Coqide too to parse ids too, but cannot check if they are valid. + * Hence we check for validity only if we are an ide slave. *) + if !Flags.ide_slave then assert(in_range id); + id + | _ -> raise (Invalid_argument "to_state_id") +let of_state_id i = Element ("state_id",["val",string_of_int i],[]) + +let state_id_info : (state_id * state_id) Exninfo.t = Exninfo.make () +let add_state_id exn ?(valid = initial_state_id) id = + Exninfo.add exn state_id_info (valid, id) +let get_state_id exn = Exninfo.get exn state_id_info + +module StateidOrderedType = struct type t = state_id let compare = compare end |