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Diffstat (limited to 'plugins/syntax/int31_syntax.ml')
| -rw-r--r-- | plugins/syntax/int31_syntax.ml | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/plugins/syntax/int31_syntax.ml b/plugins/syntax/int31_syntax.ml deleted file mode 100644 index e34a401c2c..0000000000 --- a/plugins/syntax/int31_syntax.ml +++ /dev/null @@ -1,114 +0,0 @@ -(************************************************************************) -(* * The Coq Proof Assistant / The Coq Development Team *) -(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) -(* <O___,, * (see CREDITS file for the list of authors) *) -(* \VV/ **************************************************************) -(* // * This file is distributed under the terms of the *) -(* * GNU Lesser General Public License Version 2.1 *) -(* * (see LICENSE file for the text of the license) *) -(************************************************************************) - - -(* Poor's man DECLARE PLUGIN *) -let __coq_plugin_name = "int31_syntax_plugin" -let () = Mltop.add_known_module __coq_plugin_name - -(* digit-based syntax for int31 *) - -open Bigint -open Names -open Globnames -open Glob_term - -(*** Constants for locating int31 constructors ***) - -let make_dir l = DirPath.make (List.rev_map Id.of_string l) -let make_path dir id = Libnames.make_path (make_dir dir) (Id.of_string id) - -let is_gr c gr = match DAst.get c with -| GRef (r, _) -> GlobRef.equal r gr -| _ -> false - -let make_mind mp id = Names.MutInd.make2 mp (Label.make id) -let make_mind_mpfile dir id = make_mind (ModPath.MPfile (make_dir dir)) id -let make_mind_mpdot dir modname id = - let mp = ModPath.MPdot (ModPath.MPfile (make_dir dir), Label.make modname) - in make_mind mp id - - -(* int31 stuff *) -let int31_module = ["Coq"; "Numbers"; "Cyclic"; "Int31"; "Int31"] -let int31_path = make_path int31_module "int31" -let int31_id = make_mind_mpfile int31_module -let int31_scope = "int31_scope" - -let int31_construct = ConstructRef ((int31_id "int31",0),1) - -let int31_0 = ConstructRef ((int31_id "digits",0),1) -let int31_1 = ConstructRef ((int31_id "digits",0),2) - -(*** Definition of the Non_closed exception, used in the pretty printing ***) -exception Non_closed - -(*** Parsing for int31 in digital notation ***) - -(* parses a *non-negative* integer (from bigint.ml) into an int31 - wraps modulo 2^31 *) -let int31_of_pos_bigint ?loc n = - let ref_construct = DAst.make ?loc (GRef (int31_construct, None)) in - let ref_0 = DAst.make ?loc (GRef (int31_0, None)) in - let ref_1 = DAst.make ?loc (GRef (int31_1, None)) in - let rec args counter n = - if counter <= 0 then - [] - else - let (q,r) = div2_with_rest n in - (if r then ref_1 else ref_0)::(args (counter-1) q) - in - DAst.make ?loc (GApp (ref_construct, List.rev (args 31 n))) - -let error_negative ?loc = - CErrors.user_err ?loc ~hdr:"interp_int31" (Pp.str "int31 are only non-negative numbers.") - -let interp_int31 ?loc n = - if is_pos_or_zero n then - int31_of_pos_bigint ?loc n - else - error_negative ?loc - -(* Pretty prints an int31 *) - -let bigint_of_int31 = - let rec args_parsing args cur = - match args with - | [] -> cur - | r::l when is_gr r int31_0 -> args_parsing l (mult_2 cur) - | r::l when is_gr r int31_1 -> args_parsing l (add_1 (mult_2 cur)) - | _ -> raise Non_closed - in - fun c -> match DAst.get c with - | GApp (r, args) when is_gr r int31_construct -> args_parsing args zero - | _ -> raise Non_closed - -let uninterp_int31 (AnyGlobConstr i) = - try - Some (bigint_of_int31 i) - with Non_closed -> - None - -open Notation - -let at_declare_ml_module f x = - Mltop.declare_cache_obj (fun () -> f x) __coq_plugin_name - -(* Actually declares the interpreter for int31 *) - -let _ = - register_bignumeral_interpretation int31_scope (interp_int31,uninterp_int31); - at_declare_ml_module enable_prim_token_interpretation - { pt_local = false; - pt_scope = int31_scope; - pt_interp_info = Uid int31_scope; - pt_required = (int31_path,int31_module); - pt_refs = [int31_construct]; - pt_in_match = true } |