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Diffstat (limited to 'parsing/notgram_ops.ml')
-rw-r--r-- | parsing/notgram_ops.ml | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/parsing/notgram_ops.ml b/parsing/notgram_ops.ml new file mode 100644 index 000000000..071e6db20 --- /dev/null +++ b/parsing/notgram_ops.ml @@ -0,0 +1,65 @@ +(************************************************************************) +(* * 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) *) +(************************************************************************) + +open Pp +open CErrors +open Util +open Extend +open Notation_gram + +(* Uninterpreted notation levels *) + +let notation_level_map = Summary.ref ~name:"notation_level_map" String.Map.empty + +let declare_notation_level ?(onlyprint=false) ntn level = + if String.Map.mem ntn !notation_level_map then + anomaly (str "Notation " ++ str ntn ++ str " is already assigned a level."); + notation_level_map := String.Map.add ntn (level,onlyprint) !notation_level_map + +let level_of_notation ?(onlyprint=false) ntn = + let (level,onlyprint') = String.Map.find ntn !notation_level_map in + if onlyprint' && not onlyprint then raise Not_found; + level + +(**********************************************************************) +(* Operations on scopes *) + +let parenRelation_eq t1 t2 = match t1, t2 with +| L, L | E, E | Any, Any -> true +| Prec l1, Prec l2 -> Int.equal l1 l2 +| _ -> false + +let production_level_eq l1 l2 = true (* (l1 = l2) *) + +let production_position_eq pp1 pp2 = true (* pp1 = pp2 *) (* match pp1, pp2 with +| NextLevel, NextLevel -> true +| NumLevel n1, NumLevel n2 -> Int.equal n1 n2 +| (NextLevel | NumLevel _), _ -> false *) + +let constr_entry_key_eq eq v1 v2 = match v1, v2 with +| ETName, ETName -> true +| ETReference, ETReference -> true +| ETBigint, ETBigint -> true +| ETBinder b1, ETBinder b2 -> b1 == b2 +| ETConstr lev1, ETConstr lev2 -> eq lev1 lev2 +| ETConstrAsBinder (bk1,lev1), ETConstrAsBinder (bk2,lev2) -> eq lev1 lev2 && bk1 = bk2 +| ETPattern (b1,n1), ETPattern (b2,n2) -> b1 = b2 && Option.equal Int.equal n1 n2 +| ETOther (s1,s1'), ETOther (s2,s2') -> String.equal s1 s2 && String.equal s1' s2' +| (ETName | ETReference | ETBigint | ETBinder _ | ETConstr _ | ETPattern _ | ETOther _ | ETConstrAsBinder _), _ -> false + +let level_eq_gen strict (l1, t1, u1) (l2, t2, u2) = + let tolerability_eq (i1, r1) (i2, r2) = Int.equal i1 i2 && parenRelation_eq r1 r2 in + let prod_eq (l1,pp1) (l2,pp2) = + if strict then production_level_eq l1 l2 && production_position_eq pp1 pp2 + else production_level_eq l1 l2 in + Int.equal l1 l2 && List.equal tolerability_eq t1 t2 + && List.equal (constr_entry_key_eq prod_eq) u1 u2 + +let level_eq = level_eq_gen false |