Method: TupleSelectObligation(PExp, PType, 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.AIsExp;
28: import org.overture.ast.expressions.ANotUnaryExp;
29: import org.overture.ast.expressions.PExp;
30: import org.overture.ast.types.ABooleanBasicType;
31: import org.overture.ast.types.PType;
32: import org.overture.pog.pub.IPOContextStack;
33: import org.overture.pog.pub.IPogAssistantFactory;
34: import org.overture.pog.pub.POType;
35:
36: public class TupleSelectObligation extends ProofObligation
37: {
38:         /**
39:          *
40:          */
41:         private static final long serialVersionUID = -7776291065628025047L;
42:
43:         public TupleSelectObligation(PExp exp, PType type, IPOContextStack ctxt,
44:                         IPogAssistantFactory af) throws AnalysisException
45:         {
46:                 // not is_(exp, type)
47:                 super(exp, POType.TUPLE_SELECT, ctxt, exp.getLocation(), af);
48:
49:                 ANotUnaryExp notExp = new ANotUnaryExp();
50:                 notExp.setType(new ABooleanBasicType());
51:                 AIsExp isExp = new AIsExp();
52:                 isExp.setType(new ABooleanBasicType());
53:
54:                 isExp.setTest(exp.clone());
55:                 isExp.setBasicType(type.clone()); // Do we need the type definition instead? If so, the visitor must provide it.
56:
57:                 notExp.setExp(isExp);
58:
59:                 stitch = notExp;
60:                 valuetree.setPredicate(ctxt.getPredWithContext(stitch));
61:         }
62: }