2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
6 * The Java Pathfinder core (jpf-core) platform is licensed under the
7 * Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0.
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 package gov.nasa.jpf.vm;
20 import gov.nasa.jpf.Config;
21 import gov.nasa.jpf.annotation.MJI;
22 import gov.nasa.jpf.util.MethodInfoRegistry;
23 import gov.nasa.jpf.util.RunListener;
24 import gov.nasa.jpf.util.RunRegistry;
26 import java.lang.reflect.Method;
27 import java.lang.reflect.Modifier;
28 import java.util.ArrayList;
30 public class JPF_java_lang_reflect_Method extends NativePeer {
32 static MethodInfoRegistry registry;
34 // class init - this is called automatically from the NativePeer ctor
35 public static boolean init (Config conf) {
36 // this is an example of how to handle cross-initialization between
37 // native peers - this might also get explicitly called by the java.lang.Class
38 // peer, since it creates Method objects. Here we have to make sure
39 // we only reset between JPF runs
41 if (registry == null){
42 registry = new MethodInfoRegistry();
44 RunRegistry.getDefaultRegistry().addListener( new RunListener() {
46 public void reset (RunRegistry reg){
54 static int createMethodObject (MJIEnv env, ClassInfo ciMth, MethodInfo mi){
55 // note - it is the callers responsibility to ensure Method is properly initialized
56 int regIdx = registry.registerMethodInfo(mi);
57 int eidx = env.newObject( ciMth);
58 ElementInfo ei = env.getModifiableElementInfo(eidx);
60 ei.setIntField("regIdx", regIdx);
61 ei.setBooleanField("isAccessible", mi.isPublic());
66 // this is NOT an MJI method, but it is used outside this package, so
67 // we have to add 'final'
68 public static final MethodInfo getMethodInfo (MJIEnv env, int objRef){
69 return registry.getMethodInfo(env,objRef, "regIdx");
73 public int getName____Ljava_lang_String_2 (MJIEnv env, int objRef) {
74 MethodInfo mi = getMethodInfo(env, objRef);
76 int nameRef = env.getReferenceField( objRef, "name");
77 if (nameRef == MJIEnv.NULL) {
78 nameRef = env.newString(mi.getName());
79 env.setReferenceField(objRef, "name", nameRef);
86 public int getModifiers____I (MJIEnv env, int objRef){
87 MethodInfo mi = getMethodInfo(env, objRef);
88 return mi.getModifiers();
91 static int getParameterTypes( MJIEnv env, MethodInfo mi) {
92 ThreadInfo ti = env.getThreadInfo();
93 String[] argTypeNames = mi.getArgumentTypeNames();
94 int[] ar = new int[argTypeNames.length];
96 for (int i = 0; i < argTypeNames.length; i++) {
97 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(argTypeNames[i]);
98 if (!ci.isRegistered()) {
102 ar[i] = ci.getClassObjectRef();
105 int aRef = env.newObjectArray("Ljava/lang/Class;", argTypeNames.length);
106 for (int i = 0; i < argTypeNames.length; i++) {
107 env.setReferenceArrayElement(aRef, i, ar[i]);
114 public int getParameterTypes_____3Ljava_lang_Class_2 (MJIEnv env, int objRef){
115 return getParameterTypes(env, getMethodInfo(env, objRef));
118 // TODO: Fix for Groovy's model-checking
119 private static int getParameterizedTypeImplObj(String signature, MJIEnv env, int objRef, MethodInfo mi) {
121 ThreadInfo ti = env.getThreadInfo();
122 ClassLoaderInfo cli = env.getSystemClassLoaderInfo();
123 ClassInfo ci = cli.getResolvedClassInfo("sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl");
124 // Create a new object of type ParameterizedTypeImpl
125 int paramTypeRef = env.newObject(ci);
126 ElementInfo ei = env.getModifiableElementInfo(paramTypeRef);
127 // Get field information and fill out the fields
129 String className = Types.getGenericClassName(signature);
130 ClassInfo gci = cli.getResolvedClassInfo(className);
131 if (!gci.isRegistered()) {
132 gci.registerClass(ti);
134 ei.setReferenceField("rawType", gci.getClassObjectRef());
136 // actualTypeArguments
137 String[] parameterizedTypes = Types.getParameterizedTypes(signature);
138 int[] types = new int[parameterizedTypes.length];
139 String classGenericSig = mi.getClassInfo().getGenericSignature();
140 String methodGenericSig = mi.getGenericSignature();
141 for(int j = 0; j < parameterizedTypes.length; j++) {
142 if (Types.isTypeParameter(parameterizedTypes[j], methodGenericSig) ||
143 Types.isTypeParameter(parameterizedTypes[j], classGenericSig)) {
144 types[j] = getTypeVariableImplObject(env, objRef, parameterizedTypes[j]);
146 ClassInfo pci = cli.getResolvedClassInfo(parameterizedTypes[j]);
147 if (!pci.isRegistered()) {
148 pci.registerClass(ti);
150 types[j] = pci.getClassObjectRef();
153 int aRef = env.newObjectArray("Ljava/lang/reflect/Type;", parameterizedTypes.length);
154 // Set references for every array element
155 for (int j = 0; j < parameterizedTypes.length; j++) {
156 env.setReferenceArrayElement(aRef, j, types[j]);
158 ei.setReferenceField("actualTypeArguments", aRef);
161 String ownerType = Types.getOwnerClassName(signature);
162 if (ownerType != null) {
163 ClassInfo oci = ClassLoaderInfo.getCurrentResolvedClassInfo(ownerType);
164 if (!oci.isRegistered()) {
165 oci.registerClass(ti);
167 ei.setReferenceField("ownerType", oci.getClassObjectRef());
169 ei.setReferenceField("ownerType", MJIEnv.NULL);
175 private static int getTypeVariableImplObject(MJIEnv env, int objRef, String parameterizedType) {
177 ClassLoaderInfo cli = env.getSystemClassLoaderInfo();
178 ClassInfo ci = cli.getResolvedClassInfo("sun.reflect.generics.reflectiveObjects.TypeVariableImpl");
180 int typeVarRef = env.newObject(ci);
181 ElementInfo ei = env.getModifiableElementInfo(typeVarRef);
182 // genericDeclaration contains this java.lang.reflect.Method object
183 ei.setReferenceField("genericDeclaration", objRef);
184 ei.setReferenceField("name", env.newString(parameterizedType));
189 static int getGenericParameterTypes( MJIEnv env, int objRef, MethodInfo mi) {
190 ThreadInfo ti = env.getThreadInfo();
191 String name = mi.getName();
192 String[] argTypeNames = mi.getArgumentGenericTypeNames();
193 int[] ar = new int[argTypeNames.length];
195 for (int i = 0; i < argTypeNames.length; i++) {
196 // Change this into just the generic class type if it is a generic class
197 if (Types.isGenericSignature(argTypeNames[i])) {
198 ar[i] = getParameterizedTypeImplObj(argTypeNames[i], env, objRef, mi);
200 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(argTypeNames[i]);
201 if (!ci.isRegistered()) {
202 ci.registerClass(ti);
204 ar[i] = ci.getClassObjectRef();
207 int aRef = env.newObjectArray("Ljava/lang/reflect/Type;", argTypeNames.length);
208 for (int i = 0; i < argTypeNames.length; i++) {
209 env.setReferenceArrayElement(aRef, i, ar[i]);
216 public int getGenericParameterTypes_____3Ljava_lang_reflect_Type_2 (MJIEnv env, int objRef){
217 return getGenericParameterTypes(env, objRef, getMethodInfo(env, objRef));
221 public int getGenericReturnType____Ljava_lang_reflect_Type_2 (MJIEnv env, int objRef){
222 MethodInfo mi = getMethodInfo(env, objRef);
223 ThreadInfo ti = env.getThreadInfo();
226 if (Types.isGenericSignature(mi.getGenericReturnTypeName())) {
227 retRef = getParameterizedTypeImplObj(mi.getGenericReturnTypeName(), env, objRef, mi);
229 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(mi.getReturnTypeName());
230 if (!ci.isRegistered()) {
231 ci.registerClass(ti);
233 retRef = ci.getClassObjectRef();
238 // TODO: Fix for Groovy's model-checking
239 // TODO: We have been able to only register the generic class and not yet the parameterized types
241 int getExceptionTypes(MJIEnv env, MethodInfo mi) {
242 ThreadInfo ti = env.getThreadInfo();
243 String[] exceptionNames = mi.getThrownExceptionClassNames();
245 if (exceptionNames == null) {
246 exceptionNames = new String[0];
249 int[] ar = new int[exceptionNames.length];
251 for (int i = 0; i < exceptionNames.length; i++) {
252 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(exceptionNames[i]);
253 if (!ci.isRegistered()) {
254 ci.registerClass(ti);
257 ar[i] = ci.getClassObjectRef();
260 int aRef = env.newObjectArray("Ljava/lang/Class;", exceptionNames.length);
261 for (int i = 0; i < exceptionNames.length; i++) {
262 env.setReferenceArrayElement(aRef, i, ar[i]);
269 public int getExceptionTypes_____3Ljava_lang_Class_2 (MJIEnv env, int objRef) {
270 return getExceptionTypes(env, getMethodInfo(env, objRef));
274 public int getDefaultValue____Ljava_lang_Object_2(MJIEnv env, int objRef) {
275 MethodInfo mi = getMethodInfo(env, objRef);
276 ClassInfo ci = mi.getClassInfo();
277 if(!ci.isInterface() || ci.getDirectInterfaceNames() == null || ci.getDirectInterfaceNames().length != 1 || !ci.getDirectInterfaceNames()[0].equals("java.lang.annotation.Annotation")) {
280 String annotationName = ci.getName();
281 AnnotationInfo ai = ci.getClassLoaderInfo().getResolvedAnnotationInfo(annotationName);
282 Object o = ai.getValue(mi.getName());
287 return env.liftNativeAnnotationValue(Types.getTypeName(mi.getReturnType()), o);
288 } catch(ClinitRequired e) {
289 env.handleClinitRequest(e.getRequiredClassInfo());
295 public int getReturnType____Ljava_lang_Class_2 (MJIEnv env, int objRef){
296 MethodInfo mi = getMethodInfo(env, objRef);
297 ThreadInfo ti = env.getThreadInfo();
299 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(mi.getReturnTypeName());
300 if (!ci.isRegistered()) {
301 ci.registerClass(ti);
304 return ci.getClassObjectRef();
308 public int getDeclaringClass____Ljava_lang_Class_2 (MJIEnv env, int objRef){
309 MethodInfo mi = getMethodInfo(env, objRef);
310 ClassInfo ci = mi.getClassInfo();
311 // it's got to be registered, otherwise we wouldn't be able to acquire the Method object
312 return ci.getClassObjectRef();
315 static int createBoxedReturnValueObject (MJIEnv env, MethodInfo mi, DirectCallStackFrame frame) {
316 byte rt = mi.getReturnTypeCode();
317 int ret = MJIEnv.NULL;
321 if (rt == Types.T_DOUBLE) {
322 attr = frame.getLongResultAttr();
323 double v = frame.getDoubleResult();
324 ret = env.newObject(ClassLoaderInfo.getSystemResolvedClassInfo("java.lang.Double"));
325 rei = env.getModifiableElementInfo(ret);
326 rei.setDoubleField("value", v);
327 } else if (rt == Types.T_FLOAT) {
328 attr = frame.getResultAttr();
329 float v = frame.getFloatResult();
330 ret = env.newObject(ClassLoaderInfo.getSystemResolvedClassInfo("java.lang.Float"));
331 rei = env.getModifiableElementInfo(ret);
332 rei.setFloatField("value", v);
333 } else if (rt == Types.T_LONG) {
334 attr = frame.getLongResultAttr();
335 long v = frame.getLongResult();
336 ret = env.valueOfLong(v);
337 } else if (rt == Types.T_BYTE) {
338 attr = frame.getResultAttr();
339 int v = frame.getResult();
340 ret = env.valueOfByte((byte)v);
341 } else if (rt == Types.T_CHAR) {
342 attr = frame.getResultAttr();
343 int v = frame.getResult();
344 ret = env.valueOfCharacter((char)v);
345 } else if (rt == Types.T_SHORT) {
346 attr = frame.getResultAttr();
347 int v = frame.getResult();
348 ret = env.valueOfShort((short)v);
349 } else if (rt == Types.T_INT) {
350 attr = frame.getResultAttr();
351 int v = frame.getResult();
352 ret = env.valueOfInteger(v);
353 } else if (rt == Types.T_BOOLEAN) {
354 attr = frame.getResultAttr();
355 int v = frame.getResult();
356 ret = env.valueOfBoolean((v == 1)? true: false);
357 } else if (mi.isReferenceReturnType()){
358 attr = frame.getResultAttr();
359 ret = frame.getReferenceResult();
362 env.setReturnAttribute(attr);
366 static boolean pushUnboxedArguments (MJIEnv env, MethodInfo mi, DirectCallStackFrame frame, int argIdx, int argsRef) {
368 ClassInfo sourceClass;
369 String destTypeNames[];
370 int nArgs, passedCount, sourceRef;
371 byte sourceType, destTypes[];
373 destTypes = mi.getArgumentTypes();
374 destTypeNames = mi.getArgumentTypeNames();
375 nArgs = destTypeNames.length;
377 // according to the API docs, passing null instead of an empty array is allowed for no args
378 passedCount = (argsRef != MJIEnv.NULL) ? env.getArrayLength(argsRef) : 0;
380 if (nArgs != passedCount) {
381 env.throwException(IllegalArgumentException.class.getName(), "Wrong number of arguments passed. Actual = " + passedCount + ". Expected = " + nArgs);
385 for (int i = 0; i < nArgs; i++) {
386 sourceRef = env.getReferenceArrayElement(argsRef, i);
388 // we have to handle null references explicitly
389 if (sourceRef == MJIEnv.NULL) {
390 if ((destTypes[i] != Types.T_REFERENCE) && (destTypes[i] != Types.T_ARRAY)) {
391 env.throwException(IllegalArgumentException.class.getName(), "Wrong argument type at index " + i + ". Actual = (null). Expected = " + destTypeNames[i]);
395 frame.pushRef(MJIEnv.NULL);
399 source = env.getElementInfo(sourceRef);
400 sourceClass = source.getClassInfo();
401 sourceType = getSourceType( sourceClass, destTypes[i], destTypeNames[i]);
403 Object attr = env.getElementInfo(argsRef).getFields().getFieldAttr(i);
404 if ((argIdx = pushArg( argIdx, frame, source, sourceType, destTypes[i], attr)) < 0 ){
405 env.throwException(IllegalArgumentException.class.getName(), "Wrong argument type at index " + i + ". Source Class = " + sourceClass.getName() + ". Dest Class = " + destTypeNames[i]);
413 // this returns the primitive type in case we have to unbox, and otherwise checks reference type compatibility
414 private static byte getSourceType (ClassInfo ciArgVal, byte destType, String destTypeName){
417 case Types.T_BOOLEAN:
425 return Types.getUnboxedType(ciArgVal.getName());
428 case Types.T_REFERENCE: // check if the source type is assignment compatible with the destType
429 if (ciArgVal.isInstanceOf(destTypeName)){
437 // do the proper type conversion - Java is pretty forgiving here and does
438 // not throw exceptions upon value truncation
439 private static int pushArg( int argIdx, DirectCallStackFrame frame, ElementInfo eiArg, byte srcType, byte destType, Object attr){
443 double v = eiArg.getDoubleField("value");
444 if (destType == Types.T_DOUBLE){
445 return frame.setDoubleArgument( argIdx, v, attr);
449 case Types.T_FLOAT: // covers float, double
451 float v = eiArg.getFloatField("value");
454 return frame.setFloatArgument( argIdx, v, attr);
456 return frame.setDoubleArgument( argIdx, v, attr);
462 long v = eiArg.getLongField("value");
465 return frame.setLongArgument(argIdx, v, attr);
467 return frame.setFloatArgument(argIdx, v, attr);
469 return frame.setDoubleArgument( argIdx, v, attr);
475 int v = eiArg.getIntField("value");
478 return frame.setArgument( argIdx, v, attr);
480 return frame.setLongArgument( argIdx, v, attr);
482 return frame.setFloatArgument(argIdx, v, attr);
484 return frame.setDoubleArgument( argIdx, v, attr);
490 int v = eiArg.getShortField("value");
494 return frame.setArgument( argIdx, v, attr);
496 return frame.setLongArgument( argIdx, v, attr);
498 return frame.setFloatArgument(argIdx, v, attr);
500 return frame.setDoubleArgument( argIdx, v, attr);
506 byte v = eiArg.getByteField("value");
511 return frame.setArgument( argIdx, v, attr);
513 return frame.setLongArgument( argIdx, v, attr);
515 return frame.setFloatArgument(argIdx, v, attr);
517 return frame.setDoubleArgument( argIdx, v, attr);
523 char v = eiArg.getCharField("value");
527 return frame.setArgument( argIdx, v, attr);
529 return frame.setLongArgument( argIdx, v, attr);
531 return frame.setFloatArgument(argIdx, v, attr);
533 return frame.setDoubleArgument( argIdx, v, attr);
537 case Types.T_BOOLEAN:
539 boolean v = eiArg.getBooleanField("value");
540 if (destType == Types.T_BOOLEAN){
541 return frame.setArgument( argIdx, v ? 1 : 0, attr);
547 int ref = eiArg.getObjectRef();
548 if (destType == Types.T_ARRAY){
549 return frame.setReferenceArgument( argIdx, ref, attr);
553 case Types.T_REFERENCE:
555 int ref = eiArg.getObjectRef();
556 if (destType == Types.T_REFERENCE){
557 return frame.setReferenceArgument( argIdx, ref, attr);
568 public int invoke__Ljava_lang_Object_2_3Ljava_lang_Object_2__Ljava_lang_Object_2 (MJIEnv env, int mthRef, int objRef, int argsRef) {
569 ThreadInfo ti = env.getThreadInfo();
570 MethodInfo miCallee = getMethodInfo(env, mthRef);
571 ClassInfo calleeClass = miCallee.getClassInfo();
572 DirectCallStackFrame frame = ti.getReturnedDirectCall();
574 if (frame == null){ // first time
576 //--- check the instance we are calling on
577 if (!miCallee.isStatic()) {
578 if (objRef == MJIEnv.NULL){
579 env.throwException("java.lang.NullPointerException");
583 ElementInfo eiObj = ti.getElementInfo(objRef);
584 ClassInfo objClass = eiObj.getClassInfo();
586 if (!objClass.isInstanceOf(calleeClass)) {
587 env.throwException(IllegalArgumentException.class.getName(), "Object is not an instance of declaring class. Actual = " + objClass + ". Expected = " + calleeClass);
593 //--- check accessibility
594 ElementInfo eiMth = ti.getElementInfo(mthRef);
595 if (! (Boolean) eiMth.getFieldValueObject("isAccessible")) {
596 StackFrame caller = ti.getTopFrame().getPrevious();
597 ClassInfo callerClass = caller.getClassInfo();
599 if (callerClass != calleeClass) {
600 env.throwException(IllegalAccessException.class.getName(), "Class " + callerClass.getName() +
601 " can not access a member of class " + calleeClass.getName()
602 + " with modifiers \"" + Modifier.toString(miCallee.getModifiers()));
607 //--- push the direct call
608 frame = miCallee.createDirectCallStackFrame(ti, 0);
609 frame.setReflection();
612 if (!miCallee.isStatic()) {
613 frame.setReferenceArgument( argOffset++, objRef, null);
615 if (!pushUnboxedArguments( env, miCallee, frame, argOffset, argsRef)) {
616 // we've got a IllegalArgumentException
622 //--- check for and push required clinits
623 if (miCallee.isStatic()){
624 calleeClass.initializeClass(ti);
627 return MJIEnv.NULL; // reexecute
629 } else { // we have returned from the direct call
630 return createBoxedReturnValueObject( env, miCallee, frame);
635 // this one has to collect annotations upwards in the inheritance chain
636 static int getAnnotations (MJIEnv env, MethodInfo mi){
637 String mname = mi.getName();
638 String msig = mi.genericSignature;
639 ArrayList<AnnotationInfo> aiList = new ArrayList<AnnotationInfo>();
641 // our own annotations
642 ClassInfo ci = mi.getClassInfo();
643 for (AnnotationInfo ai : mi.getAnnotations()) {
647 // our superclass annotations
648 for (ci = ci.getSuperClass(); ci != null; ci = ci.getSuperClass()){
649 mi = ci.getMethod(mname, msig, false);
651 for (AnnotationInfo ai: mi.getAnnotations()){
658 return env.newAnnotationProxies(aiList.toArray(new AnnotationInfo[aiList.size()]));
659 } catch (ClinitRequired x){
660 env.handleClinitRequest(x.getRequiredClassInfo());
666 public int getAnnotations_____3Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef){
667 return getAnnotations( env, getMethodInfo(env,mthRef));
670 // the following ones consist of a package default implementation that is shared with
671 // the constructor peer, and a public model method
672 static int getAnnotation (MJIEnv env, MethodInfo mi, int annotationClsRef){
673 ClassInfo aci = env.getReferredClassInfo(annotationClsRef);
675 AnnotationInfo ai = mi.getAnnotation(aci.getName());
677 ClassInfo aciProxy = aci.getAnnotationProxy();
679 return env.newAnnotationProxy(aciProxy, ai);
680 } catch (ClinitRequired x){
681 env.handleClinitRequest(x.getRequiredClassInfo());
690 public int getAnnotation__Ljava_lang_Class_2__Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef, int annotationClsRef) {
691 return getAnnotation(env, getMethodInfo(env,mthRef), annotationClsRef);
694 static int getDeclaredAnnotations (MJIEnv env, MethodInfo mi){
695 AnnotationInfo[] ai = mi.getAnnotations();
698 return env.newAnnotationProxies(ai);
699 } catch (ClinitRequired x){
700 env.handleClinitRequest(x.getRequiredClassInfo());
706 public int getDeclaredAnnotations_____3Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef){
707 return getDeclaredAnnotations( env, getMethodInfo(env,mthRef));
710 static int getParameterAnnotations (MJIEnv env, MethodInfo mi){
711 AnnotationInfo[][] pa = mi.getParameterAnnotations();
712 // this should always return an array object, even if the method has no arguments
715 int paRef = env.newObjectArray("[Ljava/lang/annotation/Annotation;", pa.length);
717 for (int i=0; i<pa.length; i++){
718 int eRef = env.newAnnotationProxies(pa[i]);
719 env.setReferenceArrayElement(paRef, i, eRef);
724 } catch (ClinitRequired x){ // be prepared that we might have to initialize respective annotation classes
725 env.handleClinitRequest(x.getRequiredClassInfo());
731 public int getParameterAnnotations_____3_3Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef){
732 return getParameterAnnotations( env, getMethodInfo(env,mthRef));
736 public int toString____Ljava_lang_String_2 (MJIEnv env, int objRef){
737 StringBuilder sb = new StringBuilder();
739 MethodInfo mi = getMethodInfo(env, objRef);
741 sb.append(Modifier.toString(mi.getModifiers()));
744 sb.append(mi.getReturnTypeName());
747 sb.append(mi.getClassName());
750 sb.append(mi.getName());
754 String[] at = mi.getArgumentTypeNames();
755 for (int i=0; i<at.length; i++){
756 if (i>0) sb.append(',');
762 int sref = env.newString(sb.toString());
767 public boolean equals__Ljava_lang_Object_2__Z (MJIEnv env, int objRef, int mthRef){
768 ElementInfo ei = env.getElementInfo(mthRef);
769 ClassInfo ci = ClassLoaderInfo.getSystemResolvedClassInfo(JPF_java_lang_Class.METHOD_CLASSNAME);
771 if (ei.getClassInfo() == ci){
772 MethodInfo mi1 = getMethodInfo(env, objRef);
773 MethodInfo mi2 = getMethodInfo(env, mthRef);
774 if (mi1.getClassInfo() == mi2.getClassInfo()){
775 if (mi1.getName().equals(mi2.getName())){
776 if (mi1.getReturnType().equals(mi2.getReturnType())){
777 byte[] params1 = mi1.getArgumentTypes();
778 byte[] params2 = mi2.getArgumentTypes();
779 if (params1.length == params2.length){
780 for (int i = 0; i < params1.length; i++){
781 if (params1[i] != params2[i]){
795 public int hashCode____I (MJIEnv env, int objRef){
796 MethodInfo mi = getMethodInfo(env, objRef);
797 return mi.getClassName().hashCode() ^ mi.getName().hashCode();