1 (* Copyright (C) 2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
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15 * GNU General Public License for more details.
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26 (* $Id: acic2astMatcher.ml 9271 2008-11-28 18:28:58Z fguidi $ *)
28 module Ast = NotationPt
29 module Util = NotationUtil
37 | NRef of NReference.reference
38 | Appl of cic_mask_t list
40 let mask_of_cic = function
41 | NCic.Appl tl -> Appl (List.map (fun _ -> Blob) tl), tl
42 | NCic.Const nref -> NRef nref, []
46 let mask, tl = mask_of_cic t in
49 let mask_of_appl_pattern = function
50 | Ast.NRefPattern nref -> NRef nref, []
52 | Ast.VarPattern _ -> Blob, []
53 | Ast.ApplPattern pl -> Appl (List.map (fun _ -> Blob) pl), pl
55 let tag_of_pattern p =
56 let mask, pl = mask_of_appl_pattern p in
59 type pattern_t = Ast.cic_appl_pattern
60 type term_t = NCic.term
62 (* Debugging functions only *)
63 let string_of_pattern = NotationPp.pp_cic_appl_pattern
64 let string_of_term t =
65 (new NCicPp.status)#ppterm ~metasenv:[] ~subst:[] ~context:[] t
67 let classify = function
69 | Ast.VarPattern _ -> PatternMatcher.Variable
71 | Ast.ApplPattern _ -> PatternMatcher.Constructor
74 module M = PatternMatcher.Matcher (Pattern32)
76 let compiler status rows =
77 let match_cb rows matched_terms constructors =
85 | Ast.ImplicitPattern -> Util.fresh_name (), t
86 | Ast.VarPattern name -> name, t
89 with Invalid_argument _ -> assert false in
90 let rec check_non_linear_patterns =
96 name <> name' || NCicReduction.alpha_eq status [] [] [] t t'
97 ) tl && check_non_linear_patterns tl
99 if check_non_linear_patterns env then
100 Some (env, constructors, pid)
105 M.compiler rows match_cb (fun () -> None)