grew_fs.ml 8.73 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
  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)"

bguillaum's avatar
bguillaum committed
46 47 48 49 50 51
  let to_string (feat_name, feat_val) = sprintf "%s=%s" feat_name feat_val
      
  let to_dot (feat_name, feat_val) =
    match Str.split (Str.regexp ":C:") feat_val with
    | [] -> Error.bug "[G_feature.to_dot] feature value '%s'" feat_val
    | fv::_ -> sprintf "%s=%s" feat_name fv
52 53 54 55 56 57 58
end

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

  type v = 
bguillaum's avatar
bguillaum committed
59
    | Equal of string list  (* with Equal constr, the list MUST never be empty *)
60 61 62 63 64 65 66 67 68
    | 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)

bguillaum's avatar
bguillaum committed
69 70 71 72 73 74 75 76 77
  let unif_value v1 v2 = 
    match (v1, v2) with
    | (Equal l1, Equal l2) -> 
        (match List_.sort_inter l1 l2 with
        | [] -> Error.build "Unification failure" 
        | l -> Equal l)
    | (Different l1, Different l2) -> Different (List_.sort_union l1 l2)
    | _ -> Error.build "cannot unify heterogeneous pattern features"
        
78 79 80 81 82 83 84 85
  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
86
	let values = List.sort Pervasives.compare unsorted_values in
87 88 89
	Domain.check ~loc name values;
	(name, Equal values)
    | ({Ast.kind=Ast.Disequality unsorted_values; name=name}, loc) ->
pj2m's avatar
pj2m committed
90
	let values = List.sort Pervasives.compare unsorted_values in
91 92 93
	Domain.check ~loc name values;
	(name, Different values)
    | ({Ast.kind=Ast.Param var; name=name}, loc) ->
bguillaum's avatar
bguillaum committed
94
        match pat_vars with
95
        | None -> Error.bug ~loc "[P_feature.build] param '%s' in an unparametrized rule" var
bguillaum's avatar
bguillaum committed
96 97
        | Some l -> 
            match List_.pos var l with
98 99
            | Some index -> (name, Param index)
            | None -> Error.build ~loc "[P_feature.build] Unknown pattern variable '%s'" var
pj2m's avatar
pj2m committed
100 101
end

102 103
(* ==================================================================================================== *)
module G_fs = struct
pj2m's avatar
pj2m committed
104
  (* list are supposed to be striclty ordered wrt compare*)
105
  type t = G_feature.t list
bguillaum's avatar
bguillaum committed
106

107
  let empty = []
bguillaum's avatar
bguillaum committed
108

109 110 111 112 113 114 115 116
  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
117

118
  let del_feat = List_.sort_remove_assoc
119

120 121
  let get_atom = List_.sort_assoc

bguillaum's avatar
bguillaum committed
122 123
  let to_string t = List_.to_string G_feature.to_string "," t
  let to_gr = to_string
pj2m's avatar
pj2m committed
124

125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
  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
144 145 146 147

  let get_main ?main_feat t =
    let main_list = match main_feat with
    | None -> []
bguillaum's avatar
bguillaum committed
148
    | Some string -> Str.split (Str.regexp "\\( *; *\\)\\|#") string in
149

150 151 152
    let rec loop = function
      | [] -> (None, t)
      | feat_name :: tail ->
153 154 155
          match List_.sort_assoc feat_name t with
          | Some atom -> (Some atom, List_.sort_remove_assoc feat_name t)
          | None -> loop tail in
156
    loop main_list
bguillaum's avatar
bguillaum committed
157

158 159
  let to_dot ?main_feat t =
    match get_main ?main_feat t with
bguillaum's avatar
bguillaum committed
160
    | (None, _) -> List_.to_string G_feature.to_dot "\\n" t
bguillaum's avatar
bguillaum committed
161
    | (Some atom, sub) -> sprintf "{%s|%s}" atom (List_.to_string G_feature.to_dot "\\n" sub)
162
          
163 164 165
  let to_dep ?main_feat t =
    let (main_opt, sub) = get_main ?main_feat t in
    sprintf " word=\"%s\"; subword=\"%s\"; " 
166
      (match main_opt with Some atom -> atom | None -> "")
bguillaum's avatar
bguillaum committed
167
      (List_.to_string G_feature.to_string "#" sub)
168 169 170 171 172 173
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
174

175
  let empty = []
pj2m's avatar
pj2m committed
176

177 178 179
  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
180

181
  let to_string t = List_.to_string P_feature.to_string "\\n" t
pj2m's avatar
pj2m committed
182

bguillaum's avatar
bguillaum committed
183 184
  let to_dep t = List_.to_string P_feature.to_string "#" t

185
  let to_dot t = List_.to_string P_feature.to_string "\\n" t
pj2m's avatar
pj2m committed
186

187
  exception Fail
pj2m's avatar
pj2m committed
188

189 190 191
  let match_ ?param pattern fs =
    let rec loop acc = function
      | [], _ -> acc
pj2m's avatar
pj2m committed
192

193 194 195
      (* 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
196

197 198
      (* 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
199

200 201 202
      (* 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
203

204 205 206 207 208
      | ((_, (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
209
              | None -> raise Fail
210 211 212
              | Some new_param -> loop (Some new_param) (t_pat,t)
              )
          )
pj2m's avatar
pj2m committed
213

214 215 216
      (* 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
217 218 219 220 221 222

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

223 224
      | ((fn1,_)::_, (fn2,_)::_) when fn1 < fn2 -> false
      | ((fn1,_)::_ as f1, (fn2,_)::t2) when fn1 > fn2 -> loop (f1, t2)
pj2m's avatar
pj2m committed
225 226

      (* all remaining case are fn1 = fn2 *)
227 228 229
      | ((_, (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
230

231
    in loop (fs_p, fs_g)
bguillaum's avatar
bguillaum committed
232 233 234 235 236 237 238 239 240 241 242 243

  let unif fs1 fs2 = 
    let rec loop = function
      | [], fs -> fs
      | fs, [] -> fs

      | ((fn1,v1)::t1, (fn2,v2)::t2) when fn1 < fn2 -> (fn1,v1) :: (loop (t1,(fn2,v2)::t2))
      | ((fn1,v1)::t1, (fn2,v2)::t2) when fn1 > fn2 -> (fn2,v2) :: (loop ((fn1,v1)::t1,t2))

      (* all remaining case are fn1 = fn2 *)
      | ((fn1,v1)::t1, (fn2,v2)::t2) (* when fn1 = fn2 *) -> (fn1,P_feature.unif_value v1 v2) :: (loop (t1,t2))
    in loop (fs1, fs2)      
pj2m's avatar
pj2m committed
244
end