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
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 (* Ferruccio Guidi <fguidi@cs.unibo.it> *)
31 (* Domenico Lordi <lordi@cs.unibo.it> *)
35 (******************************************************************************)
37 exception MQInvalidURI of string
38 exception MQConnectionFailed of string
39 exception MQInvalidConnection of string
41 (* Input types **************************************************************)
42 (* main type is mquery *)
44 type mqrvar = string (* name *)
46 type mqsvar = string (* name *)
48 type mqpt = string option (* PROTOCOL TOKENS *)
49 (* Some = constant string *)
50 (* None = single star: '*' *)
52 type mqbt = (* BODY TOKENS *)
53 | MQBC of string (* a constant string *)
54 | MQBD (* a slash: '/' *)
55 | MQBQ (* a question mark: '?' *)
56 | MQBS (* a single star: '*' *)
57 | MQBSS (* a double star: '**' *)
59 type mqft = (* FRAGMENT TOKENS *)
60 | MQFC of int (* a constant integer *)
61 | MQFS (* a single star: '*' *)
62 | MQFSS (* a double star: '**' *)
64 type mqtref = mqpt * (mqbt list) * (mqft list) (* tokenized reference *)
66 type mqpattern = mqtref (* constant pattern *)
92 | MQCons of string (* constant *)
93 | MQFunc of mqfunc * mqrvar (* function, rvar *)
94 | MQRVar of mqrvar (* rvar *)
95 | MQSVar of mqsvar (* svar *)
96 | MQMConclusion (* main conclusion *)
97 | MQConclusion (* inner conclusion *)
106 | MQAnd of mqbool * mqbool
107 | MQOr of mqbool * mqbool
109 | MQIs of mqstring * mqstring (* operands *)
110 | MQSetEqual of mqlist * mqlist (* the two lists denote the *)
112 | MQSubset of mqlist * mqlist (* the two lists denote two *)
113 (* sets, the first one *)
114 (* subsect of the second one. *)
117 | MQSelect of mqrvar * mqlist * mqbool (* rvar, list, boolean *)
118 | MQUse of mqlist * mqsvar (* list, Position attribute *)
119 | MQUsedBy of mqlist * mqsvar (* list, Position attribute *)
120 | MQPattern of mqpattern (* pattern *)
121 | MQUnion of mqlist * mqlist (* operands *)
122 | MQIntersect of mqlist * mqlist (* operands *)
123 | MQSortedBy of mqlist * mqorder * mqfunc (* *)
124 | MQRVarOccur of mqrvar
125 | MQDiff of mqlist * mqlist (* *)
130 (* Output types *************************************************************)
131 (* main type is mqresult *)
133 (* TODO: usare le uri in questo formato *)
134 type mquref = UriManager.uri * (int list) (* uri, fragment identifier *)
136 type mqrefs = string list (* list of references (helper) *)