1 (* Copyright (C) 2000, 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.
7 * HELM is free software; you can redistribute it and/or
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://cs.unibo.it/helm/.
26 (******************************************************************************)
30 (* Claudio Sacerdoti Coen <sacerdot@@cs.unibo.it> *)
33 (* This module is the objects level of a parser for cic objects from xml *)
34 (* files to the internal representation. It uses the module cicParser3 *)
35 (* cicParser3 (terms level) and it is used only through cicParser2 (top *)
38 (******************************************************************************)
40 exception IllFormedXml of int;;
41 exception NotImplemented;;
43 (* Utility functions that transform a Pxp attribute into something useful *)
45 (* mk_absolute_uris "n1: v1 ... vn n2 : u1 ... un ...." *)
46 (* returns [(n1,[absolute_uri_for_v1 ; ... ; absolute_uri_for_vn]) ; (n2,...) *)
47 let mk_absolute_uris s =
48 let l = (Str.split (Str.regexp ":") s) in
49 let absolute_of_relative n v =
50 let module P3 = CicParser3 in
54 | (n,he::tl) when n > 0 ->
55 "/" ^ he ^ mkburi (n - 1, tl)
56 | _ -> raise (IllFormedXml 12)
58 let m = List.length !P3.current_sp - (int_of_string n) in
59 let buri = mkburi (m, !P3.current_sp) in
60 UriManager.uri_of_string ("cic:" ^ buri ^ v ^ ".var")
66 let vars = (Str.split (Str.regexp " ") vs) in
67 [(int_of_string no, List.map (absolute_of_relative no) vars)]
69 let vars = (Str.split (Str.regexp " ") vs) in
74 let (pvars, no2) = add_prefix tl in
75 ((absolute_of_relative no he)::pvars, no2)
76 | _ -> raise (IllFormedXml 11)
78 let (pvars, no2) = add_prefix vars in
79 (int_of_string no, pvars)::(absolutize (no2::tl))
80 | _ -> raise (IllFormedXml 10)
82 (* last parameter must be applied first *)
86 let option_uri_list_of_attr a1 a2 =
87 let module T = Pxp_types in
90 T.Value s -> mk_absolute_uris s
91 | _ -> raise (IllFormedXml 0)
94 T.Value "POSSIBLE" -> Cic.Possible parameters
95 | T.Implied_value -> Cic.Actual parameters
96 | _ -> raise (IllFormedXml 0)
99 let uri_list_of_attr a =
100 let module T = Pxp_types in
102 T.Value s -> mk_absolute_uris s
103 | _ -> raise (IllFormedXml 0)
106 let string_of_attr a =
107 let module T = Pxp_types in
110 | _ -> raise (IllFormedXml 0)
114 int_of_string (string_of_attr a)
118 bool_of_string (string_of_attr a)
121 (* Other utility functions *)
124 match n#sub_nodes with
126 | _ -> raise (IllFormedXml 1)
129 let register_id id node =
130 if !CicParser3.process_annotations then
131 match !CicParser3.ids_to_targets with
133 | Some ids_to_targets ->
134 Hashtbl.add ids_to_targets id (Cic.Object node)
137 (* Functions that, given the list of sons of a node of the cic dom (objects *)
138 (* level), retrieve the internal representation associated to the node. *)
139 (* Everytime a cic term subtree is found, it is translated to the internal *)
140 (* representation using the method to_cic_term defined in cicParser3. *)
141 (* Each function raise IllFormedXml if something goes wrong, but this should *)
142 (* be impossible due to the presence of the dtd *)
143 (* The functions should really be obvious looking at their name and the cic *)
146 (* called when a CurrentProof is found *)
147 let get_conjs_value_type l =
148 let rec rget (c, v, t) l =
149 let module D = Pxp_document in
152 | conj::tl when conj#node_type = D.T_element "Conjecture" ->
153 let no = int_of_attr (conj#attribute "no")
154 and typ = (get_content conj)#extension#to_cic_term in
155 rget ((no, typ)::c, v, t) tl
156 | value::tl when value#node_type = D.T_element "body" ->
157 let v' = (get_content value)#extension#to_cic_term in
159 None -> rget (c, Some v', t) tl
160 | _ -> raise (IllFormedXml 2)
162 | typ::tl when typ#node_type = D.T_element "type" ->
163 let t' = (get_content typ)#extension#to_cic_term in
165 None -> rget (c, v, Some t') tl
166 | _ -> raise (IllFormedXml 3)
168 | _ -> raise (IllFormedXml 4)
170 match rget ([], None, None) l with
171 (c, Some v, Some t) -> (c, v, t)
172 | _ -> raise (IllFormedXml 5)
175 (* used only by get_inductive_types; called one time for each inductive *)
176 (* definitions in a block of inductive definitions *)
177 let get_names_arity_constructors l =
178 let rec rget (a,c) l =
179 let module D = Pxp_document in
182 | arity::tl when arity#node_type = D.T_element "arity" ->
183 let a' = (get_content arity)#extension#to_cic_term in
185 | con::tl when con#node_type = D.T_element "Constructor" ->
186 let id = string_of_attr (con#attribute "name")
187 and ty = (get_content con)#extension#to_cic_term in
188 rget (a,(id,ty,ref None)::c) tl
189 | _ -> raise (IllFormedXml 9)
191 match rget (None,[]) l with
192 (Some a, c) -> (a, List.rev c)
193 | _ -> raise (IllFormedXml 8)
196 (* called when an InductiveDefinition is found *)
197 let rec get_inductive_types =
201 let tyname = string_of_attr (he#attribute "name")
202 and inductive = bool_of_attr (he#attribute "inductive")
204 get_names_arity_constructors (he#sub_nodes)
206 (tyname,inductive,arity,cons)::(get_inductive_types tl) (*CSC 0 a caso *)
209 (* This is the main function and also the only one used directly from *)
210 (* cicParser. Given the root of the dom tree, it returns the internal *)
211 (* representation of the cic object described in the tree *)
212 (* It uses the previous functions and the to_cic_term method defined *)
213 (* in cicParser3 (used for subtrees that encode cic terms) *)
215 let module D = Pxp_document in
216 let module C = Cic in
217 let ntype = n # node_type in
219 D.T_element "Definition" ->
220 let id = string_of_attr (n # attribute "name")
222 option_uri_list_of_attr (n#attribute "params") (n#attribute "paramMode")
224 let sons = n#sub_nodes in
227 v#node_type = D.T_element "body" &&
228 t#node_type = D.T_element "type" ->
229 let v' = get_content v
230 and t' = get_content t in
231 (v'#extension#to_cic_term, t'#extension#to_cic_term)
232 | _ -> raise (IllFormedXml 6)
233 and xid = string_of_attr (n#attribute "id") in
234 let res = C.ADefinition (xid, ref None, id, value, typ, params) in
235 register_id xid res ;
237 | D.T_element "Axiom" ->
238 let id = string_of_attr (n # attribute "name")
239 and params = uri_list_of_attr (n # attribute "params")
241 (get_content (get_content n))#extension#to_cic_term
242 and xid = string_of_attr (n#attribute "id") in
243 let res = C.AAxiom (xid, ref None, id, typ, params) in
244 register_id xid res ;
246 | D.T_element "CurrentProof" ->
247 let name = string_of_attr (n#attribute "name")
248 and xid = string_of_attr (n#attribute "id") in
249 let sons = n#sub_nodes in
250 let (conjs, value, typ) = get_conjs_value_type sons in
251 let res = C.ACurrentProof (xid, ref None, name, conjs, value, typ) in
252 register_id xid res ;
254 | D.T_element "InductiveDefinition" ->
255 let sons = n#sub_nodes
256 and xid = string_of_attr (n#attribute "id") in
257 let inductiveTypes = get_inductive_types sons
258 and params = uri_list_of_attr (n#attribute "params")
259 and nparams = int_of_attr (n#attribute "noParams") in
261 C.AInductiveDefinition (xid, ref None, inductiveTypes, params, nparams)
263 register_id xid res ;
265 | D.T_element "Variable" ->
266 let name = string_of_attr (n#attribute "name")
267 and xid = string_of_attr (n#attribute "id")
269 let sons = n#sub_nodes in
272 b#node_type = D.T_element "body" &&
273 t#node_type = D.T_element "type" ->
274 let b' = get_content b
275 and t' = get_content t in
276 (Some (b'#extension#to_cic_term), t'#extension#to_cic_term)
277 | [t] when t#node_type = D.T_element "type" ->
278 let t' = get_content t in
279 (None, t'#extension#to_cic_term)
280 | _ -> raise (IllFormedXml 6)
282 let res = C.AVariable (xid,ref None,name,body,typ) in
283 register_id xid res ;
288 raise (IllFormedXml 7)