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, mi, 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, MethodInfo mi, 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[] argTypeNames = mi.getArgumentGenericTypeNames();
192 int[] ar = new int[argTypeNames.length];
194 for (int i = 0; i < argTypeNames.length; i++) {
195 // Change this into just the generic class type if it is a generic class
196 if (Types.isGenericSignature(argTypeNames[i])) {
197 ar[i] = getParameterizedTypeImplObj(argTypeNames[i], env, objRef, mi);
199 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(argTypeNames[i]);
200 if (!ci.isRegistered()) {
201 ci.registerClass(ti);
203 ar[i] = ci.getClassObjectRef();
206 int aRef = env.newObjectArray("Ljava/lang/reflect/Type;", argTypeNames.length);
207 for (int i = 0; i < argTypeNames.length; i++) {
208 env.setReferenceArrayElement(aRef, i, ar[i]);
215 public int getGenericParameterTypes_____3Ljava_lang_reflect_Type_2 (MJIEnv env, int objRef){
216 return getGenericParameterTypes(env, objRef, getMethodInfo(env, objRef));
220 public int getGenericReturnType____Ljava_lang_reflect_Type_2 (MJIEnv env, int objRef){
221 MethodInfo mi = getMethodInfo(env, objRef);
222 ThreadInfo ti = env.getThreadInfo();
225 if (Types.isGenericSignature(mi.getGenericReturnTypeName())) {
226 retRef = getParameterizedTypeImplObj(mi.getGenericReturnTypeName(), env, objRef, mi);
228 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(mi.getReturnTypeName());
229 if (!ci.isRegistered()) {
230 ci.registerClass(ti);
232 retRef = ci.getClassObjectRef();
237 // TODO: Fix for Groovy's model-checking
238 // TODO: We have been able to only register the generic class and not yet the parameterized types
240 int getExceptionTypes(MJIEnv env, MethodInfo mi) {
241 ThreadInfo ti = env.getThreadInfo();
242 String[] exceptionNames = mi.getThrownExceptionClassNames();
244 if (exceptionNames == null) {
245 exceptionNames = new String[0];
248 int[] ar = new int[exceptionNames.length];
250 for (int i = 0; i < exceptionNames.length; i++) {
251 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(exceptionNames[i]);
252 if (!ci.isRegistered()) {
253 ci.registerClass(ti);
256 ar[i] = ci.getClassObjectRef();
259 int aRef = env.newObjectArray("Ljava/lang/Class;", exceptionNames.length);
260 for (int i = 0; i < exceptionNames.length; i++) {
261 env.setReferenceArrayElement(aRef, i, ar[i]);
268 public int getExceptionTypes_____3Ljava_lang_Class_2 (MJIEnv env, int objRef) {
269 return getExceptionTypes(env, getMethodInfo(env, objRef));
273 public int getDefaultValue____Ljava_lang_Object_2(MJIEnv env, int objRef) {
274 MethodInfo mi = getMethodInfo(env, objRef);
275 ClassInfo ci = mi.getClassInfo();
276 if(!ci.isInterface() || ci.getDirectInterfaceNames() == null || ci.getDirectInterfaceNames().length != 1 || !ci.getDirectInterfaceNames()[0].equals("java.lang.annotation.Annotation")) {
279 String annotationName = ci.getName();
280 AnnotationInfo ai = ci.getClassLoaderInfo().getResolvedAnnotationInfo(annotationName);
281 Object o = ai.getValue(mi.getName());
286 return env.liftNativeAnnotationValue(Types.getTypeName(mi.getReturnType()), o);
287 } catch(ClinitRequired e) {
288 env.handleClinitRequest(e.getRequiredClassInfo());
294 public int getReturnType____Ljava_lang_Class_2 (MJIEnv env, int objRef){
295 MethodInfo mi = getMethodInfo(env, objRef);
296 ThreadInfo ti = env.getThreadInfo();
298 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(mi.getReturnTypeName());
299 if (!ci.isRegistered()) {
300 ci.registerClass(ti);
303 return ci.getClassObjectRef();
307 public int getDeclaringClass____Ljava_lang_Class_2 (MJIEnv env, int objRef){
308 MethodInfo mi = getMethodInfo(env, objRef);
309 ClassInfo ci = mi.getClassInfo();
310 // it's got to be registered, otherwise we wouldn't be able to acquire the Method object
311 return ci.getClassObjectRef();
314 static int createBoxedReturnValueObject (MJIEnv env, MethodInfo mi, DirectCallStackFrame frame) {
315 byte rt = mi.getReturnTypeCode();
316 int ret = MJIEnv.NULL;
320 if (rt == Types.T_DOUBLE) {
321 attr = frame.getLongResultAttr();
322 double v = frame.getDoubleResult();
323 ret = env.newObject(ClassLoaderInfo.getSystemResolvedClassInfo("java.lang.Double"));
324 rei = env.getModifiableElementInfo(ret);
325 rei.setDoubleField("value", v);
326 } else if (rt == Types.T_FLOAT) {
327 attr = frame.getResultAttr();
328 float v = frame.getFloatResult();
329 ret = env.newObject(ClassLoaderInfo.getSystemResolvedClassInfo("java.lang.Float"));
330 rei = env.getModifiableElementInfo(ret);
331 rei.setFloatField("value", v);
332 } else if (rt == Types.T_LONG) {
333 attr = frame.getLongResultAttr();
334 long v = frame.getLongResult();
335 ret = env.valueOfLong(v);
336 } else if (rt == Types.T_BYTE) {
337 attr = frame.getResultAttr();
338 int v = frame.getResult();
339 ret = env.valueOfByte((byte)v);
340 } else if (rt == Types.T_CHAR) {
341 attr = frame.getResultAttr();
342 int v = frame.getResult();
343 ret = env.valueOfCharacter((char)v);
344 } else if (rt == Types.T_SHORT) {
345 attr = frame.getResultAttr();
346 int v = frame.getResult();
347 ret = env.valueOfShort((short)v);
348 } else if (rt == Types.T_INT) {
349 attr = frame.getResultAttr();
350 int v = frame.getResult();
351 ret = env.valueOfInteger(v);
352 } else if (rt == Types.T_BOOLEAN) {
353 attr = frame.getResultAttr();
354 int v = frame.getResult();
355 ret = env.valueOfBoolean((v == 1)? true: false);
356 } else if (mi.isReferenceReturnType()){
357 attr = frame.getResultAttr();
358 ret = frame.getReferenceResult();
361 env.setReturnAttribute(attr);
365 static boolean pushUnboxedArguments (MJIEnv env, MethodInfo mi, DirectCallStackFrame frame, int argIdx, int argsRef) {
367 ClassInfo sourceClass;
368 String destTypeNames[];
369 int nArgs, passedCount, sourceRef;
370 byte sourceType, destTypes[];
372 destTypes = mi.getArgumentTypes();
373 destTypeNames = mi.getArgumentTypeNames();
374 nArgs = destTypeNames.length;
376 // according to the API docs, passing null instead of an empty array is allowed for no args
377 passedCount = (argsRef != MJIEnv.NULL) ? env.getArrayLength(argsRef) : 0;
379 if (nArgs != passedCount) {
380 env.throwException(IllegalArgumentException.class.getName(), "Wrong number of arguments passed. Actual = " + passedCount + ". Expected = " + nArgs);
384 for (int i = 0; i < nArgs; i++) {
385 sourceRef = env.getReferenceArrayElement(argsRef, i);
387 // we have to handle null references explicitly
388 if (sourceRef == MJIEnv.NULL) {
389 if ((destTypes[i] != Types.T_REFERENCE) && (destTypes[i] != Types.T_ARRAY)) {
390 env.throwException(IllegalArgumentException.class.getName(), "Wrong argument type at index " + i + ". Actual = (null). Expected = " + destTypeNames[i]);
394 frame.pushRef(MJIEnv.NULL);
398 source = env.getElementInfo(sourceRef);
399 sourceClass = source.getClassInfo();
400 sourceType = getSourceType( sourceClass, destTypes[i], destTypeNames[i]);
402 Object attr = env.getElementInfo(argsRef).getFields().getFieldAttr(i);
403 if ((argIdx = pushArg( argIdx, frame, source, sourceType, destTypes[i], attr)) < 0 ){
404 env.throwException(IllegalArgumentException.class.getName(), "Wrong argument type at index " + i + ". Source Class = " + sourceClass.getName() + ". Dest Class = " + destTypeNames[i]);
412 // this returns the primitive type in case we have to unbox, and otherwise checks reference type compatibility
413 private static byte getSourceType (ClassInfo ciArgVal, byte destType, String destTypeName){
416 case Types.T_BOOLEAN:
424 return Types.getUnboxedType(ciArgVal.getName());
427 case Types.T_REFERENCE: // check if the source type is assignment compatible with the destType
428 if (ciArgVal.isInstanceOf(destTypeName)){
436 // do the proper type conversion - Java is pretty forgiving here and does
437 // not throw exceptions upon value truncation
438 private static int pushArg( int argIdx, DirectCallStackFrame frame, ElementInfo eiArg, byte srcType, byte destType, Object attr){
442 double v = eiArg.getDoubleField("value");
443 if (destType == Types.T_DOUBLE){
444 return frame.setDoubleArgument( argIdx, v, attr);
448 case Types.T_FLOAT: // covers float, double
450 float v = eiArg.getFloatField("value");
453 return frame.setFloatArgument( argIdx, v, attr);
455 return frame.setDoubleArgument( argIdx, v, attr);
461 long v = eiArg.getLongField("value");
464 return frame.setLongArgument(argIdx, v, attr);
466 return frame.setFloatArgument(argIdx, v, attr);
468 return frame.setDoubleArgument( argIdx, v, attr);
474 int v = eiArg.getIntField("value");
477 return frame.setArgument( argIdx, v, attr);
479 return frame.setLongArgument( argIdx, v, attr);
481 return frame.setFloatArgument(argIdx, v, attr);
483 return frame.setDoubleArgument( argIdx, v, attr);
489 int v = eiArg.getShortField("value");
493 return frame.setArgument( argIdx, v, attr);
495 return frame.setLongArgument( argIdx, v, attr);
497 return frame.setFloatArgument(argIdx, v, attr);
499 return frame.setDoubleArgument( argIdx, v, attr);
505 byte v = eiArg.getByteField("value");
510 return frame.setArgument( argIdx, v, attr);
512 return frame.setLongArgument( argIdx, v, attr);
514 return frame.setFloatArgument(argIdx, v, attr);
516 return frame.setDoubleArgument( argIdx, v, attr);
522 char v = eiArg.getCharField("value");
526 return frame.setArgument( argIdx, v, attr);
528 return frame.setLongArgument( argIdx, v, attr);
530 return frame.setFloatArgument(argIdx, v, attr);
532 return frame.setDoubleArgument( argIdx, v, attr);
536 case Types.T_BOOLEAN:
538 boolean v = eiArg.getBooleanField("value");
539 if (destType == Types.T_BOOLEAN){
540 return frame.setArgument( argIdx, v ? 1 : 0, attr);
546 int ref = eiArg.getObjectRef();
547 if (destType == Types.T_ARRAY){
548 return frame.setReferenceArgument( argIdx, ref, attr);
552 case Types.T_REFERENCE:
554 int ref = eiArg.getObjectRef();
555 if (destType == Types.T_REFERENCE){
556 return frame.setReferenceArgument( argIdx, ref, attr);
567 public int invoke__Ljava_lang_Object_2_3Ljava_lang_Object_2__Ljava_lang_Object_2 (MJIEnv env, int mthRef, int objRef, int argsRef) {
568 ThreadInfo ti = env.getThreadInfo();
569 MethodInfo miCallee = getMethodInfo(env, mthRef);
570 ClassInfo calleeClass = miCallee.getClassInfo();
571 DirectCallStackFrame frame = ti.getReturnedDirectCall();
573 if (frame == null){ // first time
575 //--- check the instance we are calling on
576 if (!miCallee.isStatic()) {
577 if (objRef == MJIEnv.NULL){
578 env.throwException("java.lang.NullPointerException");
582 ElementInfo eiObj = ti.getElementInfo(objRef);
583 ClassInfo objClass = eiObj.getClassInfo();
585 if (!objClass.isInstanceOf(calleeClass)) {
586 env.throwException(IllegalArgumentException.class.getName(), "Object is not an instance of declaring class. Actual = " + objClass + ". Expected = " + calleeClass);
592 //--- check accessibility
593 ElementInfo eiMth = ti.getElementInfo(mthRef);
594 if (! (Boolean) eiMth.getFieldValueObject("isAccessible")) {
595 StackFrame caller = ti.getTopFrame().getPrevious();
596 ClassInfo callerClass = caller.getClassInfo();
598 if (callerClass != calleeClass) {
599 env.throwException(IllegalAccessException.class.getName(), "Class " + callerClass.getName() +
600 " can not access a member of class " + calleeClass.getName()
601 + " with modifiers \"" + Modifier.toString(miCallee.getModifiers()));
606 //--- push the direct call
607 frame = miCallee.createDirectCallStackFrame(ti, 0);
608 frame.setReflection();
611 if (!miCallee.isStatic()) {
612 frame.setReferenceArgument( argOffset++, objRef, null);
614 if (!pushUnboxedArguments( env, miCallee, frame, argOffset, argsRef)) {
615 // we've got a IllegalArgumentException
621 //--- check for and push required clinits
622 if (miCallee.isStatic()){
623 calleeClass.initializeClass(ti);
626 return MJIEnv.NULL; // reexecute
628 } else { // we have returned from the direct call
629 return createBoxedReturnValueObject( env, miCallee, frame);
634 // this one has to collect annotations upwards in the inheritance chain
635 static int getAnnotations (MJIEnv env, MethodInfo mi){
636 String mname = mi.getName();
637 String msig = mi.genericSignature;
638 ArrayList<AnnotationInfo> aiList = new ArrayList<AnnotationInfo>();
640 // our own annotations
641 ClassInfo ci = mi.getClassInfo();
642 for (AnnotationInfo ai : mi.getAnnotations()) {
646 // our superclass annotations
647 for (ci = ci.getSuperClass(); ci != null; ci = ci.getSuperClass()){
648 mi = ci.getMethod(mname, msig, false);
650 for (AnnotationInfo ai: mi.getAnnotations()){
657 return env.newAnnotationProxies(aiList.toArray(new AnnotationInfo[aiList.size()]));
658 } catch (ClinitRequired x){
659 env.handleClinitRequest(x.getRequiredClassInfo());
665 public int getAnnotations_____3Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef){
666 return getAnnotations( env, getMethodInfo(env,mthRef));
669 // the following ones consist of a package default implementation that is shared with
670 // the constructor peer, and a public model method
671 static int getAnnotation (MJIEnv env, MethodInfo mi, int annotationClsRef){
672 ClassInfo aci = env.getReferredClassInfo(annotationClsRef);
674 AnnotationInfo ai = mi.getAnnotation(aci.getName());
676 ClassInfo aciProxy = aci.getAnnotationProxy();
678 return env.newAnnotationProxy(aciProxy, ai);
679 } catch (ClinitRequired x){
680 env.handleClinitRequest(x.getRequiredClassInfo());
689 public int getAnnotation__Ljava_lang_Class_2__Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef, int annotationClsRef) {
690 return getAnnotation(env, getMethodInfo(env,mthRef), annotationClsRef);
693 static int getDeclaredAnnotations (MJIEnv env, MethodInfo mi){
694 AnnotationInfo[] ai = mi.getAnnotations();
697 return env.newAnnotationProxies(ai);
698 } catch (ClinitRequired x){
699 env.handleClinitRequest(x.getRequiredClassInfo());
705 public int getDeclaredAnnotations_____3Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef){
706 return getDeclaredAnnotations( env, getMethodInfo(env,mthRef));
709 static int getParameterAnnotations (MJIEnv env, MethodInfo mi){
710 AnnotationInfo[][] pa = mi.getParameterAnnotations();
711 // this should always return an array object, even if the method has no arguments
714 int paRef = env.newObjectArray("[Ljava/lang/annotation/Annotation;", pa.length);
716 for (int i=0; i<pa.length; i++){
717 int eRef = env.newAnnotationProxies(pa[i]);
718 env.setReferenceArrayElement(paRef, i, eRef);
723 } catch (ClinitRequired x){ // be prepared that we might have to initialize respective annotation classes
724 env.handleClinitRequest(x.getRequiredClassInfo());
730 public int getParameterAnnotations_____3_3Ljava_lang_annotation_Annotation_2 (MJIEnv env, int mthRef){
731 return getParameterAnnotations( env, getMethodInfo(env,mthRef));
735 public int toString____Ljava_lang_String_2 (MJIEnv env, int objRef){
736 StringBuilder sb = new StringBuilder();
738 MethodInfo mi = getMethodInfo(env, objRef);
740 sb.append(Modifier.toString(mi.getModifiers()));
743 sb.append(mi.getReturnTypeName());
746 sb.append(mi.getClassName());
749 sb.append(mi.getName());
753 String[] at = mi.getArgumentTypeNames();
754 for (int i=0; i<at.length; i++){
755 if (i>0) sb.append(',');
761 int sref = env.newString(sb.toString());
766 public boolean equals__Ljava_lang_Object_2__Z (MJIEnv env, int objRef, int mthRef){
767 ElementInfo ei = env.getElementInfo(mthRef);
768 ClassInfo ci = ClassLoaderInfo.getSystemResolvedClassInfo(JPF_java_lang_Class.METHOD_CLASSNAME);
770 if (ei.getClassInfo() == ci){
771 MethodInfo mi1 = getMethodInfo(env, objRef);
772 MethodInfo mi2 = getMethodInfo(env, mthRef);
773 if (mi1.getClassInfo() == mi2.getClassInfo()){
774 if (mi1.getName().equals(mi2.getName())){
775 if (mi1.getReturnType().equals(mi2.getReturnType())){
776 byte[] params1 = mi1.getArgumentTypes();
777 byte[] params2 = mi2.getArgumentTypes();
778 if (params1.length == params2.length){
779 for (int i = 0; i < params1.length; i++){
780 if (params1[i] != params2[i]){
794 public int hashCode____I (MJIEnv env, int objRef){
795 MethodInfo mi = getMethodInfo(env, objRef);
796 return mi.getClassName().hashCode() ^ mi.getName().hashCode();