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.proof;
12:
13: import de.uka.ilkd.key.rule.Rule;
14:
15: /**
16: * Inversion of a rule filter
17: */
18: public class NotRuleFilter implements RuleFilter {
19:
20: private final RuleFilter a;
21:
22: public NotRuleFilter(RuleFilter p_a) {
23: a = p_a;
24: }
25:
26: public boolean filter(Rule rule) {
27: return !a.filter(rule);
28: }
29:
30: public String toString() {
31: return "Not:" + a;
32: }
33:
34: }
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