Mercurial > hg > Members > kono > jpf-core

annotate src/peers/gov/nasa/jpf/vm/JPF_java_net_URLClassLoader.java @ 0:61d41facf527

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author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18 package gov.nasa.jpf.vm;
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19
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20 import gov.nasa.jpf.JPF;
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21 import java.net.MalformedURLException;
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22 import java.net.URL;
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23
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24 import gov.nasa.jpf.annotation.MJI;
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25 import gov.nasa.jpf.util.JPFLogger;
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26
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27 /**
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28 * @author Nastaran Shafiei <nastaran.shafiei@gmail.com>
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29 *
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30 * Native peer for java.net.URLClassLoader
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31 */
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32 public class JPF_java_net_URLClassLoader extends JPF_java_lang_ClassLoader{
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33
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34 static JPFLogger log = JPF.getLogger("class");
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35
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36 @MJI
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37 public void addURL0__Ljava_lang_String_2__V (MJIEnv env, int objRef, int urlRef) throws MalformedURLException {
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38 ClassLoaderInfo cl = env.getClassLoaderInfo(objRef);
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39 String url = env.getStringObject(urlRef);
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40
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41 String path = null;
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42 URL u = new URL(url);
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43 String protocol = u.getProtocol();
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44 if(protocol.equals("file")) {
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45 path = u.getFile();
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46 } else if(protocol.equals("jar")){
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47 path = url.substring(url.lastIndexOf(':')+1, url.indexOf('!'));
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48 } else {
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49 // we don't support other protocols for now!
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50 log.warning("unknown path element specification: ", url);
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51 return;
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52 }
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53
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54 cl.addClassPathElement(path);
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55 }
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56
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57 @MJI
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58 public int findClass__Ljava_lang_String_2__Ljava_lang_Class_2 (MJIEnv env, int objRef, int nameRef) {
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59 String typeName = env.getStringObject(nameRef);
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60 ClassLoaderInfo cl = env.getClassLoaderInfo(objRef);
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61 ThreadInfo ti = env.getThreadInfo();
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62
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63 try {
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64 ClassInfo ci = cl.getResolvedClassInfo( typeName);
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65 if(!ci.isRegistered()) {
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66 ci.registerClass(env.getThreadInfo());
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67 }
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68 // note that we don't initialize yet
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69 return ci.getClassObjectRef();
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70
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71 } catch (LoadOnJPFRequired rre) { // this classloader has a overridden loadClass
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72 env.repeatInvocation();
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73 return MJIEnv.NULL;
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74
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75 } catch (ClassInfoException cix){
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76 if (cix.getCause() instanceof ClassParseException){
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77 env.throwException("java.lang.ClassFormatError", typeName);
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78 } else {
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79 env.throwException("java.lang.ClassNotFoundException", typeName);
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80 }
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81 return MJIEnv.NULL;
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82 }
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83 }
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84
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85 @MJI
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86 public int findResource0__Ljava_lang_String_2__Ljava_lang_String_2 (MJIEnv env, int objRef, int resRef){
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87 String rname = env.getStringObject(resRef);
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88
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89 ClassLoaderInfo cl = env.getClassLoaderInfo(objRef);
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90
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91 String resourcePath = cl.findResource(rname);
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92
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93 return env.newString(resourcePath);
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94 }
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95
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96 @MJI
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97 public int findResources0__Ljava_lang_String_2___3Ljava_lang_String_2 (MJIEnv env, int objRef, int resRef) {
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98 String rname = env.getStringObject(resRef);
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99
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100 ClassLoaderInfo cl = env.getClassLoaderInfo(objRef);
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101
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102 String[] resources = cl.findResources(rname);
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103
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104 return env.newStringArray(resources);
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105 }
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106 }