Package: NonZeroObligation

NonZeroObligation

nameinstructionbranchcomplexitylinemethod
NonZeroObligation(ILexLocation, PExp, IPOContextStack, IPogAssistantFactory)
M: 0 C: 31
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M: 0 C: 0
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M: 0 C: 1
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M: 0 C: 7
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M: 0 C: 1
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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 org.overture.ast.analysis.AnalysisException;
27: import org.overture.ast.expressions.AIntLiteralExp;
28: import org.overture.ast.expressions.ANotEqualBinaryExp;
29: import org.overture.ast.expressions.PExp;
30: import org.overture.ast.factory.AstExpressionFactory;
31: import org.overture.ast.intf.lex.ILexLocation;
32: import org.overture.ast.types.AIntNumericBasicType;
33: import org.overture.pog.pub.IPOContextStack;
34: import org.overture.pog.pub.IPogAssistantFactory;
35: import org.overture.pog.pub.POType;
36:
37: public class NonZeroObligation extends ProofObligation
38: {
39:         /**
40:          *
41:          */
42:         private static final long serialVersionUID = 5773921447005368923L;
43:
44:         public NonZeroObligation(ILexLocation location, PExp exp,
45:                         IPOContextStack ctxt, IPogAssistantFactory af)
46:                         throws AnalysisException
47:         {
48:                 super(exp, POType.NON_ZERO, ctxt, location, af);
49:
50:                 // exp <> 0
51:
52:                 AIntLiteralExp zeroExp = getIntLiteral(0);
53:                 zeroExp.setType(new AIntNumericBasicType());
54:                 ANotEqualBinaryExp notEqualsExp = AstExpressionFactory.newANotEqualBinaryExp(exp.clone(), zeroExp);
55:
56:                 stitch = notEqualsExp;
57:                 valuetree.setPredicate(ctxt.getPredWithContext(notEqualsExp));
58:         }
59: }