Package: NonEmptySeqObligation

NonEmptySeqObligation

nameinstructionbranchcomplexitylinemethod
NonEmptySeqObligation(PExp, IPOContextStack, IPogAssistantFactory)
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Coverage

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 java.util.LinkedList;
27:
28: import org.overture.ast.analysis.AnalysisException;
29: import org.overture.ast.expressions.ANotEqualBinaryExp;
30: import org.overture.ast.expressions.ASeqEnumSeqExp;
31: import org.overture.ast.expressions.PExp;
32: import org.overture.ast.factory.AstExpressionFactory;
33: import org.overture.ast.factory.AstFactory;
34: import org.overture.ast.types.AUnknownType;
35: import org.overture.pog.pub.IPOContextStack;
36: import org.overture.pog.pub.IPogAssistantFactory;
37: import org.overture.pog.pub.POType;
38:
39: public class NonEmptySeqObligation extends ProofObligation
40: {
41:         /**
42:          *
43:          */
44:         private static final long serialVersionUID = -8245417295117901422L;
45:
46:         public NonEmptySeqObligation(PExp exp, IPOContextStack ctxt,
47:                         IPogAssistantFactory af) throws AnalysisException
48:         {
49:                 super(exp, POType.NON_EMPTY_SEQ, ctxt, exp.getLocation(), af);
50:
51:                 // exp <> []
52:
53:                 ASeqEnumSeqExp seqExp = new ASeqEnumSeqExp();
54:                 seqExp.setMembers(new LinkedList<PExp>()); // empty list
55:                 seqExp.setType(AstFactory.newASeqSeqType(null, new AUnknownType()));
56:
57:                 ANotEqualBinaryExp notEqualsExp = AstExpressionFactory.newANotEqualBinaryExp(exp.clone(), seqExp);
58:
59:                 stitch = notEqualsExp;
60:                 valuetree.setPredicate(ctxt.getPredWithContext(notEqualsExp));
61:         }
62: }