Method: UniqueExistenceObligation(AIotaExp, IPOContextStack, IPogAssistantFactory)

1: /*******************************************************************************
2: *
3: *        Copyright (C) 2008 Fujitsu Services Ltd.
4: *
5: *        Author: Nick Battle
6: *
7: *        This file is part of VDMJ.
8: *
9: *        VDMJ is free software: you can redistribute it and/or modify
10: *        it under the terms of the GNU General Public License as published by
11: *        the Free Software Foundation, either version 3 of the License, or
12: *        (at your option) any later version.
13: *
14: *        VDMJ is distributed in the hope that it will be useful,
15: *        but WITHOUT ANY WARRANTY; without even the implied warranty of
16: *        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: *        GNU General Public License for more details.
18: *
19: *        You should have received a copy of the GNU General Public License
20: *        along with VDMJ. If not, see <http://www.gnu.org/licenses/>.
21: *
22: ******************************************************************************/
23:
24: package org.overture.pog.obligation;
25:
26: import org.overture.ast.analysis.AnalysisException;
27: import org.overture.ast.expressions.AExists1Exp;
28: import org.overture.ast.expressions.AIotaExp;
29: import org.overture.pog.pub.IPOContextStack;
30: import org.overture.pog.pub.IPogAssistantFactory;
31: import org.overture.pog.pub.POType;
32:
33: public class UniqueExistenceObligation extends ProofObligation
34: {
35:         /**
36:          *
37:          */
38:         private static final long serialVersionUID = 6089416321651268903L;
39:
40:         public UniqueExistenceObligation(AIotaExp iota, IPOContextStack ctxt,
41:                         IPogAssistantFactory af) throws AnalysisException
42:         {
43:                 super(iota, POType.UNIQUE_EXISTENCE, ctxt, iota.getLocation(), af);
44:
45:                 // exists1 iotaBinds & iotaPredicate
46:
47:                 AExists1Exp exists1Exp = new AExists1Exp();
48:                 exists1Exp.setBind(iota.getBind().clone());
49:                 exists1Exp.setPredicate(iota.getPredicate().clone());
50:
51:                 // valuetree.setContext(ctxt.getContextNodeList());
52:                 stitch = exists1Exp;
53:                 valuetree.setPredicate(ctxt.getPredWithContext(exists1Exp));
54:         }
55: }