grew_fs.ml 7.77 KB
Newer Older
bguillaum's avatar
bguillaum committed
1
open Printf
pj2m's avatar
pj2m committed
2
open Log
bguillaum's avatar
bguillaum committed
3
4
5

open Grew_utils
open Grew_ast
pj2m's avatar
pj2m committed
6

7
8
9
(* ==================================================================================================== *)
module Domain = struct
  let current = ref None
pj2m's avatar
pj2m committed
10

11
  let reset () = current := None
pj2m's avatar
pj2m committed
12

13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
  let init ast_domain = current := Some ast_domain

  let check ?loc name values = match !current with
  | None -> ()
  | Some d ->
      let rec loop = function
        | [] -> Error.build ?loc "[GRS] Unknown feature name '%s'" name
        | ((Ast.Open n)::_) when n = name -> ()
        | ((Ast.Closed (n,vs))::_) when n = name -> 
            (match List_.sort_diff values vs with 
            | [] -> ()
            | l -> Error.build ?loc "Unknown feature values '%s' for feature name '%s'" 
	          (List_.to_string (fun x->x) ", " l)
	          name
            )
        | _::t -> loop t in
      loop d
end

(* ==================================================================================================== *)
module G_feature = struct
  type t = string * string

  let get_name = fst
37

pj2m's avatar
pj2m committed
38
39
  let compare feat1 feat2 = Pervasives.compare (get_name feat1) (get_name feat2)

40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
  let build = function
    | ({Ast.kind=Ast.Equality [atom]; name=name},loc) ->
	Domain.check ~loc name [atom];
	(name, atom)
    | _ -> Error.build "Illegal feature declaration in Graph (must be '=' and atomic)"

  let to_string (feat_name, value) = sprintf "%s=\"%s\"" feat_name value

  let to_dep (feat_name, value) = sprintf "%s=%s" feat_name value
end

(* ==================================================================================================== *)
module P_feature = struct
  (* feature= (feature_name, disjunction of atomic values) *) 

  type v = 
    | Equal of string list  (* with Equal constr, the list is MUST never be empty *)
    | Different of string list
    | Param of int 

  type t = string * v

  let get_name = fst

  let compare feat1 feat2 = Pervasives.compare (get_name feat1) (get_name feat2)

  let to_string = function
    | (feat_name, Equal atoms) -> sprintf "%s=%s" feat_name (List_.to_string (fun x->x) "|" atoms)
    | (feat_name, Different []) -> sprintf "%s=*" feat_name
    | (feat_name, Different atoms) -> sprintf "%s<>%s" feat_name (List_.to_string (fun x->x) "|" atoms)
    | (feat_name, Param index) -> sprintf "%s=$%d" feat_name index 

  let build ?pat_vars = function
    | ({Ast.kind=Ast.Equality unsorted_values; name=name}, loc) ->
pj2m's avatar
pj2m committed
74
	let values = List.sort Pervasives.compare unsorted_values in
75
76
77
	Domain.check ~loc name values;
	(name, Equal values)
    | ({Ast.kind=Ast.Disequality unsorted_values; name=name}, loc) ->
pj2m's avatar
pj2m committed
78
	let values = List.sort Pervasives.compare unsorted_values in
79
80
81
	Domain.check ~loc name values;
	(name, Different values)
    | ({Ast.kind=Ast.Param var; name=name}, loc) ->
bguillaum's avatar
bguillaum committed
82
        match pat_vars with
83
        | None -> Error.bug ~loc "[P_feature.build] param '%s' in an unparametrized rule" var
bguillaum's avatar
bguillaum committed
84
85
        | Some l -> 
            match List_.pos var l with
86
87
            | Some index -> (name, Param index)
            | None -> Error.build ~loc "[P_feature.build] Unknown pattern variable '%s'" var
pj2m's avatar
pj2m committed
88
89
end

90
91
(* ==================================================================================================== *)
module G_fs = struct
pj2m's avatar
pj2m committed
92
  (* list are supposed to be striclty ordered wrt compare*)
93
  type t = G_feature.t list
bguillaum's avatar
bguillaum committed
94

95
  let empty = []
bguillaum's avatar
bguillaum committed
96

97
98
99
100
101
102
103
104
  let set_feat ?loc feature_name atom t =
    Domain.check ?loc feature_name [atom];
    let rec loop = function
    | [] -> [(feature_name, atom)]
    | ((fn,_)::_) as t when feature_name < fn -> (feature_name, atom)::t
    | (fn,_)::t when feature_name = fn -> (feature_name, atom)::t
    | (fn,a)::t -> (fn,a) :: (loop t) 
    in loop t
105

106
  let del_feat = List_.sort_remove_assoc
107

108
109
110
  let get_atom = List_.sort_assoc

  let to_gr t = List_.to_string G_feature.to_string ", " t
pj2m's avatar
pj2m committed
111

112
  let to_string t = List_.to_string G_feature.to_string "\\n" t
pj2m's avatar
pj2m committed
113

114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
  let build ast_fs =
    let unsorted = List.map (fun feat -> G_feature.build feat) ast_fs in
    List.sort G_feature.compare unsorted

  let of_conll line =
    let unsorted = ("phon", line.Conll.phon) :: ("lemma", line.Conll.lemma) :: ("cat", line.Conll.pos2) :: line.Conll.morph in
    List.sort G_feature.compare unsorted

  exception Fail_unif 
  let unif fs1 fs2 = 
    let rec loop = function
      | [], fs | fs, [] -> fs
      | (f1::t1, f2::t2) when G_feature.compare f1 f2 < 0 -> f1 :: loop (t1, f2::t2)
      | (f1::t1, f2::t2) when G_feature.compare f1 f2 > 0 -> f2 :: loop (f1::t1, t2)
                                                                    
      (* all remaining case are fn1 = fn2 *)
      | ((fn, a1)::t1, (_, a2)::t2) when a1=a2 -> (fn,a1) :: (loop (t1, t2))
      | _ -> raise Fail_unif
    in try Some (loop (fs1, fs2)) with Fail_unif -> None
133
134
135
136
137

  let get_main ?main_feat t =
    let main_list = match main_feat with
    | None -> []
    | Some string -> Str.split (Str.regexp " *; *") string in
138

139
140
141
    let rec loop = function
      | [] -> (None, t)
      | feat_name :: tail ->
142
143
144
          match List_.sort_assoc feat_name t with
          | Some atom -> (Some atom, List_.sort_remove_assoc feat_name t)
          | None -> loop tail in
145
    loop main_list
bguillaum's avatar
bguillaum committed
146

147
148
149
150
151
  let to_dot ?main_feat t =
    match get_main ?main_feat t with
    | (None, _) -> List_.to_string G_feature.to_string "\\n" t
    | (Some atom, sub) -> sprintf "%s|%s" atom (List_.to_string G_feature.to_string "\\n" sub)
          
152
153
154
  let to_dep ?main_feat t =
    let (main_opt, sub) = get_main ?main_feat t in
    sprintf " word=\"%s\"; subword=\"%s\"; " 
155
156
157
158
159
160
161
162
      (match main_opt with Some atom -> atom | None -> "")
      (List_.to_string G_feature.to_dep "#" sub)
end
 
(* ==================================================================================================== *)
module P_fs = struct
  (* list are supposed to be striclty ordered wrt compare*)
  type t = P_feature.t list
pj2m's avatar
pj2m committed
163

164
  let empty = []
pj2m's avatar
pj2m committed
165

166
167
168
  let build ?pat_vars ast_fs =
    let unsorted = List.map (P_feature.build ?pat_vars) ast_fs in
    List.sort P_feature.compare unsorted 
pj2m's avatar
pj2m committed
169

170
  let to_string t = List_.to_string P_feature.to_string "\\n" t
pj2m's avatar
pj2m committed
171

172
  let to_dot t = List_.to_string P_feature.to_string "\\n" t
pj2m's avatar
pj2m committed
173

174
  exception Fail
pj2m's avatar
pj2m committed
175

176
177
178
  let match_ ?param pattern fs =
    let rec loop acc = function
      | [], _ -> acc
pj2m's avatar
pj2m committed
179

180
181
182
      (* Two next cases: each feature_name present in pattern must be in instance: [] means unif failure *)
      | _, [] -> raise Fail
      | ((fn_pat, _)::_, (fn, _)::_) when fn_pat < fn -> raise Fail
pj2m's avatar
pj2m committed
183

184
185
      (* a feature_name present only in instance -> Skip it *)
      | ((fn_pat, fv_pat)::t_pat, (fn, _)::t) when fn_pat > fn -> loop acc ((fn_pat, fv_pat)::t_pat, t)
pj2m's avatar
pj2m committed
186

187
188
189
      (* Next cases: fn_pat = fn *)
      | ((_, (P_feature.Equal fv))::t_pat, (_, fa)::t) when List_.sort_mem fa fv -> loop acc (t_pat,t)
      | ((_, (P_feature.Different fv))::t_pat, (_, fa)::t) when not (List_.sort_mem fa fv) -> loop acc (t_pat,t)
pj2m's avatar
pj2m committed
190

191
192
193
194
195
      | ((_, (P_feature.Param index))::t_pat, (_, atom)::t) ->
          (match acc with
          | None -> Log.bug "[P_fs.compatible] Illegal parametrized pattern feature"; exit 2
          | Some param ->
              (match Lex_par.filter index atom param with
196
              | None -> raise Fail
197
198
199
              | Some new_param -> loop (Some new_param) (t_pat,t)
              )
          )
pj2m's avatar
pj2m committed
200

201
202
203
      (* remaining cases: Equal and not list_mem  |  Diff and not list_mem -> fail*)  
      | _ -> raise Fail
    in loop param (pattern,fs)
pj2m's avatar
pj2m committed
204
205
206
207
208
209

  let filter fs_p fs_g = 
    let rec loop = function
      | [], fs -> true
      | fs, [] -> false

210
211
      | ((fn1,_)::_, (fn2,_)::_) when fn1 < fn2 -> false
      | ((fn1,_)::_ as f1, (fn2,_)::t2) when fn1 > fn2 -> loop (f1, t2)
pj2m's avatar
pj2m committed
212
213

      (* all remaining case are fn1 = fn2 *)
214
215
216
      | ((_, (P_feature.Equal fv))::t1, (_, atom)::t2) when List_.sort_mem atom fv -> loop (t1, t2)
      | ((_, (P_feature.Different fv))::t1, (_, atom)::t2) when not (List_.sort_mem atom fv) -> loop (t1, t2)
      | _ -> false
pj2m's avatar
pj2m committed
217

218
    in loop (fs_p, fs_g)
pj2m's avatar
pj2m committed
219
end