Mercurial > hg > Members > kono > jpf-core
view src/main/gov/nasa/jpf/util/ClassInfoFilter.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
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date | Fri, 23 Jan 2015 10:14:01 -0800 |
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/* * Copyright (C) 2014, United States Government, as represented by the * Administrator of the National Aeronautics and Space Administration. * All rights reserved. * * The Java Pathfinder core (jpf-core) platform is licensed under the * Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package gov.nasa.jpf.util; import gov.nasa.jpf.vm.ClassInfo; /** * utility class that can be used by InstructionFactory implementations to * selectively replace bytecodes for specified class sets. * * Filtering is based on include/exclude name patterns (e.g. for packages) and/or * on inheritance (both down- and upwards) */ public class ClassInfoFilter { // filter using an explicit set of class names (can be used for one-pass load) protected StringSetMatcher includes; // included classes that should use them protected StringSetMatcher excludes; // excluded classes (that should NOT use them) // filter using base/derived class sets (only useful in subsequent pass) ClassInfo ciLeaf; ClassInfo ciRoot; public ClassInfoFilter (String[] includeCls, String[] excludeCls, ClassInfo rootCls, ClassInfo leafCls) { includes = StringSetMatcher.getNonEmpty(includeCls); excludes = StringSetMatcher.getNonEmpty(excludeCls); ciRoot = rootCls; ciLeaf = leafCls; } public boolean isPassing (ClassInfo ci){ if (ci == null){ // <??> not clear what to do in this case, since we have nothing to // filter on. Since all reflection calls come in here, it's probably // better to instrument by default (until we have a better mechanism) return true; } else { String clsName = ci.getName(); if (StringSetMatcher.isMatch(clsName, includes, excludes)){ if (ciLeaf == null || ciLeaf.isInstanceOf(ci)){ if (ciRoot == null || ci.isInstanceOf(ciRoot)){ return true; } } } } return false; } }