Mercurial > hg > Members > kono > jpf-core
view src/main/gov/nasa/jpf/util/MethodInfoRegistry.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.MJIEnv; import gov.nasa.jpf.vm.MethodInfo; /** * just a little helper for java.lang.reflect peers * * <2do> - it's overly simplistic for now */ public class MethodInfoRegistry { final int NREG = 10; MethodInfo[] registered; int nRegistered; public MethodInfoRegistry () { registered = new MethodInfo[NREG]; nRegistered = 0; } public int registerMethodInfo (MethodInfo mi) { int idx; for (idx=0; idx < nRegistered; idx++) { if (registered[idx] == mi) { return idx; } } if (idx == registered.length) { MethodInfo[] newReg = new MethodInfo[registered.length+NREG]; System.arraycopy(registered, 0, newReg, 0, registered.length); registered = newReg; } registered[idx] = mi; nRegistered++; return idx; } public MethodInfo getRegisteredFieldInfo (int idx) { return registered[idx]; } public MethodInfo getMethodInfo (MJIEnv env, int objRef, String fieldName) { int idx = env.getIntField( objRef, fieldName); assert ((idx >= 0) || (idx < nRegistered)) : "illegal MethodInfo request: " + idx + ", " + nRegistered; return registered[idx]; } }