+++ /dev/null
-(* Copyright (C) 2000, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://www.cs.unibo.it/helm/.
- *)
-
-(******************************************************************************)
-(* *)
-(* PROJECT HELM *)
-(* *)
-(* Ferruccio Guidi <fguidi@cs.unibo.it> *)
-(* Domenico Lordi <lordi@cs.unibo.it> *)
-(* 30/04/2002 *)
-(* *)
-(* *)
-(******************************************************************************)
-
-exception MQInvalidURI of string
-exception MQConnectionFailed of string
-exception MQInvalidConnection of string
-
-(* Input types **************************************************************)
-(* main type is mquery *)
-
-type mqrvar = string (* name *)
-
-type mqsvar = string (* name *)
-
-type mqlvar = string (* name *)
-
-type mqpt = string option (* PROTOCOL TOKENS *)
- (* Some = constant string *)
- (* None = single star: '*' *)
-
-type mqbt = (* BODY TOKENS *)
- | MQBC of string (* a constant string *)
- | MQBD (* a slash: '/' *)
- | MQBQ (* a question mark: '?' *)
- | MQBS (* a single star: '*' *)
- | MQBSS (* a double star: '**' *)
-
-type mqft = (* FRAGMENT TOKENS *)
- | MQFC of int (* a constant integer *)
- | MQFS (* a single star: '*' *)
- | MQFSS (* a double star: '**' *)
-
-type mquref = UriManager.uri * (int list) (* uri, fragment identifier *)
-
-type mqtref = mqpt * (mqbt list) * (mqft list) (* tokenized pattern reference *)
-
-type mqfunc =
- | MQName (* Name *)
- | MQTheory (* theory *)
- | MQTitle (* DC properties *)
- | MQContributor
- | MQCreator
- | MQPublisher
- | MQSubject
- | MQDescription
- | MQDate
- | MQType
- | MQFormat
- | MQIdentifier
- | MQLanguage
- | MQRelation
- | MQSource
- | MQCoverage
- | MQRights
- | MQInstitution
- | MQContact
- | MQFirstVersion
- | MQModified
-
-type mqstring =
- | MQCons of string (* constant *)
- | MQFunc of mqfunc * mqrvar (* function, rvar *)
- | MQStringRVar of mqrvar (* rvar *)
- | MQStringSVar of mqsvar (* svar *)
- | MQMConclusion (* main conclusion *)
- | MQConclusion (* inner conclusion *)
-
-type mqorder =
- | MQAsc (* ascending order *)
- | MQDesc (* descending order *)
-
-type mqbool =
- | MQTrue (* true *)
- | MQFalse (* false *)
- | MQAnd of mqbool * mqbool (* conjunction *)
- | MQOr of mqbool * mqbool (* disjunction *)
- | MQNot of mqbool (* negation *)
- | MQIs of mqstring * mqstring (* case-sensitive comparison *)
- | MQSetEqual of mqlist * mqlist (* the two lists denote the same set *)
- | MQSubset of mqlist * mqlist (* the two lists denote two sets, the 1st subset of the 2nd *)
-
-and mqlist =
- | MQReference of string list (* reference list *)
- | MQPattern of mqtref (* pattern *)
- | MQListLVar of mqlvar (* lvar *)
- | MQListRVar of mqrvar (* rvar *)
- | MQSelect of mqrvar * mqlist * mqbool (* rvar, list, boolean *)
- | MQUse of mqlist * mqsvar (* list, Position attribute *)
- | MQUsedBy of mqlist * mqsvar (* list, Position attribute *)
- | MQUnion of mqlist * mqlist (* operands *)
- | MQIntersect of mqlist * mqlist (* operands *)
- | MQSortedBy of mqlist * mqorder * mqfunc (* ordering *)
- | MQDiff of mqlist * mqlist (* set difference *)
- | MQLetIn of mqlvar * mqlist * mqlist (* explicit lvar assignment *)
-
-type mquery =
- | MQList of mqlist
-
-(* Output types *************************************************************)
-(* main type is mqresult *)
-
-type mqresult =
- | MQRefs of string list