01: // This file is part of KeY - Integrated Deductive Software Design
02: // Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
03: // Universitaet Koblenz-Landau, Germany
04: // Chalmers University of Technology, Sweden
05: //
06: // The KeY system is protected by the GNU General Public License.
07: // See LICENSE.TXT for details.
08: //
09: //
10:
11: package de.uka.ilkd.key.strategy.termfeature;
12:
13: import de.uka.ilkd.key.logic.Term;
14: import de.uka.ilkd.key.logic.op.Operator;
15:
16: /**
17: * Term feature for checking whether the top operator of a term is
18: * identical to a given one
19: */
20: public class OperatorTF extends BinaryTermFeature {
21:
22: private final Operator op;
23:
24: private OperatorTF(Operator op) {
25: this .op = op;
26: }
27:
28: public static TermFeature create(Operator op) {
29: return new OperatorTF(op);
30: }
31:
32: protected boolean filter(Term term) {
33: return op == term.op();
34: }
35: }
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