1 // natClass.cc - Implementation of java.lang.Class native methods.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
4 2010 Free Software Foundation
6 This file is part of libgcj.
8 This software is copyrighted work licensed under the terms of the
9 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
19 #pragma implementation "Class.h"
23 #include <java-threads.h>
25 #include <java/lang/Class.h>
26 #include <java/lang/ClassLoader.h>
27 #include <java/lang/String.h>
28 #include <java/lang/reflect/Modifier.h>
29 #include <java/lang/reflect/Member.h>
30 #include <java/lang/reflect/Method.h>
31 #include <java/lang/reflect/Field.h>
32 #include <java/lang/reflect/Proxy.h>
33 #include <java/lang/reflect/Constructor.h>
34 #include <java/lang/AbstractMethodError.h>
35 #include <java/lang/ArrayStoreException.h>
36 #include <java/lang/ClassCastException.h>
37 #include <java/lang/ClassNotFoundException.h>
38 #include <java/lang/ExceptionInInitializerError.h>
39 #include <java/lang/IllegalAccessException.h>
40 #include <java/lang/IllegalAccessError.h>
41 #include <java/lang/IllegalArgumentException.h>
42 #include <java/lang/IncompatibleClassChangeError.h>
43 #include <java/lang/NoSuchFieldError.h>
44 #include <java/lang/ArrayIndexOutOfBoundsException.h>
45 #include <java/lang/InstantiationException.h>
46 #include <java/lang/NoClassDefFoundError.h>
47 #include <java/lang/NoSuchFieldException.h>
48 #include <java/lang/NoSuchMethodError.h>
49 #include <java/lang/NoSuchMethodException.h>
50 #include <java/lang/Thread.h>
51 #include <java/lang/NullPointerException.h>
52 #include <java/lang/RuntimePermission.h>
53 #include <java/lang/System.h>
54 #include <java/lang/SecurityException.h>
55 #include <java/lang/SecurityManager.h>
56 #include <java/lang/StringBuffer.h>
57 #include <java/lang/VMClassLoader.h>
58 #include <gcj/method.h>
59 #include <gnu/gcj/RawData.h>
60 #include <java/lang/VerifyError.h>
61 #include <java/lang/InternalError.h>
62 #include <java/lang/TypeNotPresentException.h>
63 #include <java/lang/Byte.h>
64 #include <java/lang/Short.h>
65 #include <java/lang/Integer.h>
66 #include <java/lang/Float.h>
67 #include <java/lang/Double.h>
68 #include <java/lang/Long.h>
69 #include <java/lang/Character.h>
70 #include <java/lang/Boolean.h>
71 #include <java/lang/annotation/Annotation.h>
72 #include <java/util/HashMap.h>
73 #include <java/util/Map.h>
74 #include <sun/reflect/annotation/AnnotationInvocationHandler.h>
75 #include <java/lang/Enum.h>
77 #include <java-cpool.h>
78 #include <java-interp.h>
79 #include <java-assert.h>
80 #include <java-stack.h>
81 #include <execution.h>
88 java::lang::Class::forName (jstring className, jboolean initialize,
89 java::lang::ClassLoader *loader)
92 throw new java::lang::NullPointerException;
94 jsize length = _Jv_GetStringUTFLength (className);
96 _Jv_GetStringUTFRegion (className, 0, className->length(), buffer);
98 _Jv_Utf8Const *name = _Jv_makeUtf8Const (buffer, length);
100 if (! _Jv_VerifyClassName (name))
101 throw new java::lang::ClassNotFoundException (className);
103 jclass klass = (buffer[0] == '['
104 ? _Jv_FindClassFromSignature (name->chars(), loader)
105 : _Jv_FindClass (name, loader));
108 throw new java::lang::ClassNotFoundException (className);
111 _Jv_InitClass (klass);
117 java::lang::Class::forName (jstring className)
119 java::lang::ClassLoader *loader = NULL;
121 jclass caller = _Jv_StackTrace::GetCallingClass (&Class::class$);
123 loader = caller->getClassLoaderInternal();
125 return forName (className, true, loader);
128 java::lang::ClassLoader *
129 java::lang::Class::getClassLoader (void)
131 java::lang::SecurityManager *s = java::lang::System::getSecurityManager();
134 jclass caller = _Jv_StackTrace::GetCallingClass (&Class::class$);
135 return getClassLoader (caller);
141 java::lang::ClassLoader *
142 java::lang::Class::getClassLoader (jclass caller)
144 java::lang::SecurityManager *s = java::lang::System::getSecurityManager();
147 ClassLoader *caller_loader = caller->getClassLoaderInternal();
149 // If the caller has a non-null class loader, and that loader
150 // is not this class' loader or an ancestor thereof, then do a
152 if (caller_loader != NULL && ! caller_loader->isAncestorOf(loader))
153 s->checkPermission (new RuntimePermission (JvNewStringLatin1 ("getClassLoader")));
159 java::lang::reflect::Constructor *
160 java::lang::Class::getConstructor (JArray<jclass> *param_types)
162 memberAccessCheck(java::lang::reflect::Member::PUBLIC);
164 jstring partial_sig = getSignature (param_types, true);
165 jint hash = partial_sig->hashCode ();
167 int i = isPrimitive () ? 0 : method_count;
170 if (_Jv_equalUtf8Consts (methods[i].name, init_name)
171 && _Jv_equal (methods[i].signature, partial_sig, hash))
173 // Found it. For getConstructor, the constructor must be
175 using namespace java::lang::reflect;
176 if (! Modifier::isPublic(methods[i].accflags))
178 Constructor *cons = new Constructor ();
179 cons->offset = (char *) (&methods[i]) - (char *) methods;
180 cons->declaringClass = this;
184 throw new java::lang::NoSuchMethodException (_Jv_NewStringUtf8Const (init_name));
187 JArray<java::lang::reflect::Constructor *> *
188 java::lang::Class::getDeclaredConstructors (jboolean publicOnly)
190 int numConstructors = 0;
191 int max = isPrimitive () ? 0 : method_count;
193 for (i = max; --i >= 0; )
195 _Jv_Method *method = &methods[i];
196 if (method->name == NULL
197 || ! _Jv_equalUtf8Consts (method->name, init_name))
200 && ! java::lang::reflect::Modifier::isPublic(method->accflags))
204 JArray<java::lang::reflect::Constructor *> *result
205 = (JArray<java::lang::reflect::Constructor *> *)
206 JvNewObjectArray (numConstructors,
207 &java::lang::reflect::Constructor::class$,
209 java::lang::reflect::Constructor** cptr = elements (result);
210 for (i = 0; i < max; i++)
212 _Jv_Method *method = &methods[i];
213 if (method->name == NULL
214 || ! _Jv_equalUtf8Consts (method->name, init_name))
217 && ! java::lang::reflect::Modifier::isPublic(method->accflags))
219 java::lang::reflect::Constructor *cons
220 = new java::lang::reflect::Constructor ();
221 cons->offset = (char *) method - (char *) methods;
222 cons->declaringClass = this;
228 java::lang::reflect::Constructor *
229 java::lang::Class::getDeclaredConstructor (JArray<jclass> *param_types)
231 memberAccessCheck(java::lang::reflect::Member::DECLARED);
233 jstring partial_sig = getSignature (param_types, true);
234 jint hash = partial_sig->hashCode ();
236 int i = isPrimitive () ? 0 : method_count;
239 if (_Jv_equalUtf8Consts (methods[i].name, init_name)
240 && _Jv_equal (methods[i].signature, partial_sig, hash))
243 using namespace java::lang::reflect;
244 Constructor *cons = new Constructor ();
245 cons->offset = (char *) (&methods[i]) - (char *) methods;
246 cons->declaringClass = this;
250 throw new java::lang::NoSuchMethodException (_Jv_NewStringUtf8Const (init_name));
253 java::lang::reflect::Field *
254 java::lang::Class::getField (jstring name, jint hash)
256 java::lang::reflect::Field* rfield;
257 for (int i = 0; i < field_count; i++)
259 _Jv_Field *field = &fields[i];
260 if (! _Jv_equal (field->name, name, hash))
262 if (! (field->getModifiers() & java::lang::reflect::Modifier::PUBLIC))
264 rfield = new java::lang::reflect::Field ();
265 rfield->offset = (char*) field - (char*) fields;
266 rfield->declaringClass = this;
270 jclass superclass = getSuperclass();
271 if (superclass == NULL)
273 rfield = superclass->getField(name, hash);
274 for (int i = 0; i < interface_count && rfield == NULL; ++i)
275 rfield = interfaces[i]->getField (name, hash);
279 java::lang::reflect::Field *
280 java::lang::Class::getDeclaredField (jstring name)
282 memberAccessCheck(java::lang::reflect::Member::DECLARED);
283 int hash = name->hashCode();
284 for (int i = 0; i < field_count; i++)
286 _Jv_Field *field = &fields[i];
287 if (! _Jv_equal (field->name, name, hash))
289 java::lang::reflect::Field* rfield = new java::lang::reflect::Field ();
290 rfield->offset = (char*) field - (char*) fields;
291 rfield->declaringClass = this;
295 throw new java::lang::NoSuchFieldException (name);
298 JArray<java::lang::reflect::Field *> *
299 java::lang::Class::getDeclaredFields (jboolean public_only)
305 for (int i = 0; i < field_count; ++i)
307 _Jv_Field *field = &fields[i];
308 if ((field->flags & java::lang::reflect::Modifier::PUBLIC))
315 JArray<java::lang::reflect::Field *> *result
316 = (JArray<java::lang::reflect::Field *> *)
317 JvNewObjectArray (size, &java::lang::reflect::Field::class$, NULL);
318 java::lang::reflect::Field** fptr = elements (result);
319 for (int i = 0; i < field_count; i++)
321 _Jv_Field *field = &fields[i];
323 && ! (field->flags & java::lang::reflect::Modifier::PUBLIC))
325 java::lang::reflect::Field* rfield = new java::lang::reflect::Field ();
326 rfield->offset = (char*) field - (char*) fields;
327 rfield->declaringClass = this;
334 java::lang::Class::getSignature (java::lang::StringBuffer *buffer)
337 buffer->append((jchar) method_count);
340 jstring name = getName();
341 if (name->charAt(0) != '[')
342 buffer->append((jchar) 'L');
343 buffer->append(name);
344 if (name->charAt(0) != '[')
345 buffer->append((jchar) ';');
349 // This doesn't have to be native. It is an implementation detail
350 // only called from the C++ code, though, so maybe this is clearer.
352 java::lang::Class::getSignature (JArray<jclass> *param_types,
353 jboolean is_constructor)
355 java::lang::StringBuffer *buf = new java::lang::StringBuffer ();
356 buf->append((jchar) '(');
357 // A NULL param_types means "no parameters".
358 if (param_types != NULL)
360 jclass *v = elements (param_types);
361 for (int i = 0; i < param_types->length; ++i)
362 v[i]->getSignature(buf);
364 buf->append((jchar) ')');
366 buf->append((jchar) 'V');
367 return buf->toString();
370 java::lang::reflect::Method *
371 java::lang::Class::_getDeclaredMethod (jstring name,
372 JArray<jclass> *param_types)
374 jstring partial_sig = getSignature (param_types, false);
375 jint p_len = partial_sig->length();
376 _Jv_Utf8Const *utf_name = _Jv_makeUtf8Const (name);
377 int i = isPrimitive () ? 0 : method_count;
380 if (_Jv_equalUtf8Consts (methods[i].name, utf_name)
381 && _Jv_equaln (methods[i].signature, partial_sig, p_len)
382 && (methods[i].accflags
383 & java::lang::reflect::Modifier::INVISIBLE) == 0)
386 using namespace java::lang::reflect;
387 Method *rmethod = new Method ();
388 rmethod->offset = (char*) (&methods[i]) - (char*) methods;
389 rmethod->declaringClass = this;
396 JArray<java::lang::reflect::Method *> *
397 java::lang::Class::getDeclaredMethods (void)
399 memberAccessCheck(java::lang::reflect::Member::DECLARED);
402 int max = isPrimitive () ? 0 : method_count;
404 for (i = max; --i >= 0; )
406 _Jv_Method *method = &methods[i];
407 if (method->name == NULL
408 || _Jv_equalUtf8Consts (method->name, clinit_name)
409 || _Jv_equalUtf8Consts (method->name, init_name)
410 || _Jv_equalUtf8Consts (method->name, finit_name)
411 || (methods[i].accflags
412 & java::lang::reflect::Modifier::INVISIBLE) != 0)
416 JArray<java::lang::reflect::Method *> *result
417 = (JArray<java::lang::reflect::Method *> *)
418 JvNewObjectArray (numMethods, &java::lang::reflect::Method::class$, NULL);
419 java::lang::reflect::Method** mptr = elements (result);
420 for (i = 0; i < max; i++)
422 _Jv_Method *method = &methods[i];
423 if (method->name == NULL
424 || _Jv_equalUtf8Consts (method->name, clinit_name)
425 || _Jv_equalUtf8Consts (method->name, init_name)
426 || _Jv_equalUtf8Consts (method->name, finit_name)
427 || (methods[i].accflags
428 & java::lang::reflect::Modifier::INVISIBLE) != 0)
430 java::lang::reflect::Method* rmethod
431 = new java::lang::reflect::Method ();
432 rmethod->offset = (char*) method - (char*) methods;
433 rmethod->declaringClass = this;
440 java::lang::Class::getName (void)
442 return name->toString();
446 java::lang::Class::getInterfaces (void)
448 jobjectArray r = JvNewObjectArray (interface_count, getClass (), NULL);
449 jobject *data = elements (r);
450 for (int i = 0; i < interface_count; ++i)
452 typedef unsigned int uaddr __attribute__ ((mode (pointer)));
453 data[i] = interfaces[i];
454 if ((uaddr)data[i] < (uaddr)constants.size)
455 fprintf (stderr, "ERROR !!!\n");
457 return reinterpret_cast<JArray<jclass> *> (r);
460 java::lang::reflect::Method *
461 java::lang::Class::_getMethod (jstring name, JArray<jclass> *param_types)
463 jstring partial_sig = getSignature (param_types, false);
464 jint p_len = partial_sig->length();
465 _Jv_Utf8Const *utf_name = _Jv_makeUtf8Const (name);
467 for (Class *klass = this; klass; klass = klass->getSuperclass())
469 int i = klass->isPrimitive () ? 0 : klass->method_count;
472 if (_Jv_equalUtf8Consts (klass->methods[i].name, utf_name)
473 && _Jv_equaln (klass->methods[i].signature, partial_sig, p_len)
474 && (klass->methods[i].accflags
475 & java::lang::reflect::Modifier::INVISIBLE) == 0)
478 using namespace java::lang::reflect;
480 // Method must be public.
481 if (! Modifier::isPublic (klass->methods[i].accflags))
484 Method *rmethod = new Method ();
485 rmethod->offset = ((char *) (&klass->methods[i])
486 - (char *) klass->methods);
487 rmethod->declaringClass = klass;
493 // If we haven't found a match, and this class is an interface, then
494 // check all the superinterfaces.
497 for (int i = 0; i < interface_count; ++i)
499 using namespace java::lang::reflect;
500 Method *rmethod = interfaces[i]->_getMethod (name, param_types);
509 // This is a very slow implementation, since it re-scans all the
510 // methods we've already listed to make sure we haven't duplicated a
511 // method. It also over-estimates the required size, so we have to
512 // shrink the result array later.
514 java::lang::Class::_getMethods (JArray<java::lang::reflect::Method *> *result,
519 // First examine all local methods
520 for (int i = isPrimitive () ? 0 : method_count; --i >= 0; )
522 _Jv_Method *method = &methods[i];
523 if (method->name == NULL
524 || _Jv_equalUtf8Consts (method->name, clinit_name)
525 || _Jv_equalUtf8Consts (method->name, init_name)
526 || _Jv_equalUtf8Consts (method->name, finit_name)
528 & java::lang::reflect::Modifier::INVISIBLE) != 0)
530 // Only want public methods.
531 if (! java::lang::reflect::Modifier::isPublic (method->accflags))
534 // This is where we over-count the slots required if we aren't
535 // filling the result for real.
539 java::lang::reflect::Method **mp = elements (result);
540 // If we already have a method with this name and signature,
541 // then ignore this one. This can happen with virtual
543 for (int j = 0; j < offset; ++j)
545 _Jv_Method *meth_2 = _Jv_FromReflectedMethod (mp[j]);
546 if (_Jv_equalUtf8Consts (method->name, meth_2->name)
547 && _Jv_equalUtf8Consts (method->signature,
560 using namespace java::lang::reflect;
561 Method *rmethod = new Method ();
562 rmethod->offset = (char *) method - (char *) methods;
563 rmethod->declaringClass = this;
564 Method **mp = elements (result);
565 mp[offset + count] = rmethod;
571 // Now examine superclasses.
572 if (getSuperclass () != NULL)
574 jint s_count = getSuperclass()->_getMethods (result, offset);
579 // Finally, examine interfaces.
580 for (int i = 0; i < interface_count; ++i)
582 int f_count = interfaces[i]->_getMethods (result, offset);
590 JArray<java::lang::reflect::Method *> *
591 java::lang::Class::getMethods (void)
593 using namespace java::lang::reflect;
595 memberAccessCheck(Member::PUBLIC);
597 // This will overestimate the size we need.
598 jint count = _getMethods (NULL, 0);
600 JArray<Method *> *result
601 = ((JArray<Method *> *) JvNewObjectArray (count,
605 // When filling the array for real, we get the actual count. Then
606 // we resize the array.
607 jint real_count = _getMethods (result, 0);
609 if (real_count != count)
612 = ((JArray<Method *> *) JvNewObjectArray (real_count,
616 Method **destp = elements (r2);
617 Method **srcp = elements (result);
619 for (int i = 0; i < real_count; ++i)
629 java::lang::Class::isAssignableFrom (jclass klass)
631 // Arguments may not have been initialized, given ".class" syntax.
632 // This ensures we can at least look at their superclasses.
633 _Jv_Linker::wait_for_state (this, JV_STATE_LOADING);
634 _Jv_Linker::wait_for_state (klass, JV_STATE_LOADING);
635 return _Jv_IsAssignableFrom (klass, this);
639 java::lang::Class::isInstance (jobject obj)
643 return _Jv_IsAssignableFrom (JV_CLASS (obj), this);
647 java::lang::Class::newInstance (void)
649 memberAccessCheck(java::lang::reflect::Member::PUBLIC);
654 || java::lang::reflect::Modifier::isAbstract(accflags))
655 throw new java::lang::InstantiationException (getName ());
657 _Jv_InitClass (this);
659 _Jv_Method *meth = _Jv_GetMethodLocal (this, init_name, void_signature);
661 throw new java::lang::InstantiationException (getName());
663 jobject r = _Jv_AllocObject (this);
664 ((void (*) (jobject)) meth->ncode) (r);
669 java::lang::Class::finalize (void)
671 // Array classes don't have an engine, and don't need to be finalized.
673 engine->unregister(this);
678 _Jv_ClosureList::releaseClosures (_Jv_ClosureList **closures)
683 while (_Jv_ClosureList *current = *closures)
685 *closures = current->next;
686 ffi_closure_free (current->ptr);
691 _Jv_ClosureList::registerClosure (jclass klass, void *ptr)
693 _Jv_ClosureList **closures = klass->engine->get_closure_list (klass);
697 this->next = *closures;
703 // This implements the initialization process for a class. From Spec
706 java::lang::Class::initializeClass (void)
708 // Short-circuit to avoid needless locking (expression includes
709 // JV_STATE_PHANTOM and JV_STATE_DONE).
710 if (state >= JV_STATE_PHANTOM)
713 // Step 1. We introduce a new scope so we can synchronize more
716 JvSynchronize sync (this);
718 if (state < JV_STATE_LINKED)
722 _Jv_Linker::wait_for_state(this, JV_STATE_LINKED);
724 catch (java::lang::SecurityException *x)
728 catch (java::lang::Throwable *x)
730 // Turn into a NoClassDefFoundError.
731 java::lang::NoClassDefFoundError *result
732 = new java::lang::NoClassDefFoundError(getName());
733 result->initCause(x);
739 java::lang::Thread *self = java::lang::Thread::currentThread();
740 self = (java::lang::Thread *) ((long) self | 1);
741 while (state == JV_STATE_IN_PROGRESS && thread && thread != self)
745 if (state == JV_STATE_DONE || state == JV_STATE_IN_PROGRESS)
749 if (state == JV_STATE_ERROR)
750 throw new java::lang::NoClassDefFoundError (getName());
754 _Jv_Linker::wait_for_state (this, JV_STATE_LINKED);
755 state = JV_STATE_IN_PROGRESS;
759 if (! isInterface () && superclass)
763 _Jv_InitClass (superclass);
765 catch (java::lang::SecurityException *x)
769 catch (java::lang::Throwable *except)
771 // Caught an exception.
772 JvSynchronize sync (this);
773 state = JV_STATE_ERROR;
779 // Steps 8, 9, 10, 11.
782 _Jv_Method *meth = _Jv_GetMethodLocal (this, clinit_name,
785 ((void (*) (void)) meth->ncode) ();
787 catch (java::lang::SecurityException *x)
791 catch (java::lang::Throwable *except)
793 if (! java::lang::Error::class$.isInstance(except))
797 except = new ExceptionInInitializerError (except);
799 catch (java::lang::Throwable *t)
805 JvSynchronize sync (this);
806 state = JV_STATE_ERROR;
811 JvSynchronize sync (this);
812 state = JV_STATE_DONE;
816 // Only used by serialization
817 java::lang::reflect::Field *
818 java::lang::Class::getPrivateField (jstring name)
820 int hash = name->hashCode ();
822 java::lang::reflect::Field* rfield;
823 for (int i = 0; i < field_count; i++)
825 _Jv_Field *field = &fields[i];
826 if (! _Jv_equal (field->name, name, hash))
828 rfield = new java::lang::reflect::Field ();
829 rfield->offset = (char*) field - (char*) fields;
830 rfield->declaringClass = this;
834 jclass superclass = getSuperclass();
835 if (superclass == NULL)
837 rfield = superclass->getPrivateField(name);
838 for (int i = 0; i < interface_count && rfield == NULL; ++i)
839 rfield = interfaces[i]->getPrivateField (name);
843 // Only used by serialization
844 java::lang::reflect::Method *
845 java::lang::Class::getPrivateMethod (jstring name, JArray<jclass> *param_types)
847 jstring partial_sig = getSignature (param_types, false);
848 jint p_len = partial_sig->length();
849 _Jv_Utf8Const *utf_name = _Jv_makeUtf8Const (name);
850 for (Class *klass = this; klass; klass = klass->getSuperclass())
852 int i = klass->isPrimitive () ? 0 : klass->method_count;
855 if (_Jv_equalUtf8Consts (klass->methods[i].name, utf_name)
856 && _Jv_equaln (klass->methods[i].signature, partial_sig, p_len))
859 using namespace java::lang::reflect;
861 Method *rmethod = new Method ();
862 rmethod->offset = ((char *) (&klass->methods[i])
863 - (char *) klass->methods);
864 rmethod->declaringClass = klass;
869 throw new java::lang::NoSuchMethodException (name);
872 // Private accessor method for Java code to retrieve the protection domain.
873 java::security::ProtectionDomain *
874 java::lang::Class::getProtectionDomain0 ()
876 return protectionDomain;
880 java::lang::Class::getSigners()
886 java::lang::Class::setSigners(JArray<jobject> *s)
894 read_u1 (unsigned char *&p)
900 read_u1 (unsigned char *&p, unsigned char *next)
903 throw new java::lang::InternalError();
908 read_u2 (unsigned char *&p)
910 unsigned int b1 = *p++;
911 unsigned int b2 = *p++;
912 return (b1 << 8) | b2;
916 read_u2 (unsigned char *&p, unsigned char *next)
919 throw new java::lang::InternalError();
924 read_4 (unsigned char *&p)
930 return (b1 << 24) | (b2 << 16) | (b3 << 8) | b4;
934 java::lang::Class::getReflectionSignature (jint /*jv_attr_type*/ type,
937 // We just re-parse the bytecode for this data each time. If
938 // necessary we can cache results, but I suspect this is not
939 // performance sensitive.
940 unsigned char *bytes = reflection_data;
945 int kind = read_u1 (bytes);
946 if (kind == JV_DONE_ATTR)
948 int len = read_4 (bytes);
949 unsigned char *next = bytes + len;
955 if (type != JV_CLASS_ATTR)
957 unsigned short index = read_u2 (bytes, next);
958 if (index != obj_index)
964 int nt = read_u1 (bytes, next);
965 if (nt != JV_SIGNATURE_KIND)
970 unsigned int cpool_idx = read_u2 (bytes, next);
971 if (cpool_idx >= (unsigned int) constants.size
972 || constants.tags[cpool_idx] != JV_CONSTANT_Utf8)
974 // We just ignore errors for now. It isn't clear what is
975 // best to do here, as an encoding error here means a bug
976 // either in the compiler or in defineclass.cc.
979 return _Jv_NewStringUtf8Const (constants.data[cpool_idx].utf8);
984 java::lang::Class::getReflectionSignature (::java::lang::reflect::Constructor *c)
986 _Jv_Method *meth = _Jv_FromReflectedConstructor (c);
987 unsigned short meth_index = meth - methods;
988 return getReflectionSignature (JV_METHOD_ATTR, meth_index);
992 java::lang::Class::getReflectionSignature (::java::lang::reflect::Method *m)
994 _Jv_Method *meth = _Jv_FromReflectedMethod (m);
995 unsigned short meth_index = meth - methods;
996 return getReflectionSignature (JV_METHOD_ATTR, meth_index);
1000 java::lang::Class::getReflectionSignature (::java::lang::reflect::Field *f)
1002 _Jv_Field *fld = _Jv_FromReflectedField (f);
1003 unsigned short fld_index = fld - fields;
1004 return getReflectionSignature (JV_FIELD_ATTR, fld_index);
1008 java::lang::Class::getClassSignature()
1010 return getReflectionSignature (JV_CLASS_ATTR, 0);
1014 java::lang::Class::getEnclosingMethodData()
1016 unsigned char *bytes = reflection_data;
1021 int kind = read_u1 (bytes);
1022 if (kind == JV_DONE_ATTR)
1024 int len = read_4 (bytes);
1025 unsigned char *next = bytes + len;
1026 if (kind != JV_CLASS_ATTR)
1031 int type = read_u1 (bytes, next);
1032 if (type != JV_ENCLOSING_METHOD_KIND)
1037 int class_index = read_u2 (bytes, next);
1038 int method_index = read_u2 (bytes, next);
1040 _Jv_storeIndexes (&result, class_index, method_index);
1046 java::lang::Class::getEnclosingClass()
1049 indexes.i = getEnclosingMethodData();
1051 // No enclosing method, but perhaps a member or anonymous class
1052 return getDeclaringClass();
1053 _Jv_ushort class_index, method_index;
1054 _Jv_loadIndexes (&indexes, class_index, method_index);
1055 return _Jv_Linker::resolve_pool_entry (this, class_index).clazz;
1058 ::java::lang::reflect::Method *
1059 java::lang::Class::getEnclosingMethod()
1062 indexes.i = getEnclosingMethodData();
1065 _Jv_ushort class_index, method_index;
1066 _Jv_loadIndexes (&indexes, class_index, method_index);
1068 _Jv_Method *method = _Jv_Linker::resolve_method_entry (this, found_class,
1072 using namespace java::lang::reflect;
1073 Method *rmethod = new Method ();
1074 rmethod->offset = (char *) method - (char *) found_class->methods;
1075 rmethod->declaringClass = found_class;
1079 ::java::lang::reflect::Constructor *
1080 java::lang::Class::getEnclosingConstructor()
1083 indexes.i = getEnclosingMethodData();
1086 _Jv_ushort class_index, method_index;
1087 _Jv_loadIndexes (&indexes, class_index, method_index);
1089 _Jv_Method *method = _Jv_Linker::resolve_method_entry (this, found_class,
1093 using namespace java::lang::reflect;
1094 Constructor *cons = new Constructor ();
1095 cons->offset = (char *) method - (char *) found_class->methods;
1096 cons->declaringClass = this;
1101 check_constant (_Jv_Constants *pool, jint cpool_index, jint type)
1103 if (cpool_index <= 0 || cpool_index >= pool->size)
1104 throw new InternalError(JvNewStringLatin1("invalid constant pool index"));
1105 if ((pool->tags[cpool_index] &
1106 ~(JV_CONSTANT_ResolvedFlag|JV_CONSTANT_LazyFlag)) != type)
1108 ::java::lang::StringBuffer *sb = new ::java::lang::StringBuffer();
1109 sb->append(JvNewStringLatin1("expected pool constant "));
1111 sb->append(JvNewStringLatin1(" but got "));
1112 sb->append(jint (pool->tags[cpool_index]));
1113 throw new InternalError(sb->toString());
1117 // Forward declaration
1118 static ::java::lang::annotation::Annotation *
1119 parseAnnotation(jclass klass, _Jv_Constants *pool,
1120 unsigned char *&bytes, unsigned char *last);
1123 parseAnnotationElement(jclass klass, _Jv_Constants *pool,
1124 unsigned char *&bytes, unsigned char *last)
1126 int tag = read_u1 (bytes, last);
1132 int cindex = read_u2 (bytes, last);
1133 check_constant (pool, cindex, JV_CONSTANT_Integer);
1134 result = Byte::valueOf (pool->data[cindex].i);
1139 int cindex = read_u2 (bytes, last);
1140 check_constant (pool, cindex, JV_CONSTANT_Integer);
1141 result = Character::valueOf (pool->data[cindex].i);
1146 int cindex = read_u2 (bytes, last);
1147 check_constant (pool, cindex, JV_CONSTANT_Integer);
1148 result = Short::valueOf (pool->data[cindex].i);
1153 int cindex = read_u2 (bytes, last);
1154 check_constant (pool, cindex, JV_CONSTANT_Integer);
1155 result = Boolean::valueOf (jboolean (pool->data[cindex].i));
1160 int cindex = read_u2 (bytes, last);
1161 check_constant (pool, cindex, JV_CONSTANT_Integer);
1162 result = Integer::valueOf (pool->data[cindex].i);
1167 int cindex = read_u2 (bytes, last);
1168 check_constant (pool, cindex, JV_CONSTANT_Double);
1170 memcpy (&word, &pool->data[cindex], 2 * sizeof (_Jv_word));
1171 result = Double::valueOf (word.d);
1176 int cindex = read_u2 (bytes, last);
1177 check_constant (pool, cindex, JV_CONSTANT_Float);
1178 result = Float::valueOf (pool->data[cindex].f);
1183 int cindex = read_u2 (bytes, last);
1184 check_constant (pool, cindex, JV_CONSTANT_Long);
1186 memcpy (&word, &pool->data[cindex], 2 * sizeof (_Jv_word));
1187 result = Long::valueOf (word.l);
1192 int cindex = read_u2 (bytes, last);
1193 // Despite what the JVM spec says, compilers generate a Utf8
1194 // constant here, not a String.
1195 check_constant (pool, cindex, JV_CONSTANT_Utf8);
1196 result = pool->data[cindex].utf8->toString();
1201 int type_name_index = read_u2 (bytes, last);
1202 check_constant (pool, type_name_index, JV_CONSTANT_Utf8);
1203 int const_name_index = read_u2 (bytes, last);
1204 check_constant (pool, const_name_index, JV_CONSTANT_Utf8);
1206 _Jv_Utf8Const *u_name = pool->data[type_name_index].utf8;
1207 _Jv_Utf8Const *e_name = pool->data[const_name_index].utf8;
1209 // FIXME: throw correct exceptions at the correct times.
1210 jclass e_class = _Jv_FindClassFromSignature(u_name->chars(),
1211 klass->getClassLoaderInternal());
1212 result = ::java::lang::Enum::valueOf(e_class, e_name->toString());
1217 int cindex = read_u2 (bytes, last);
1218 check_constant (pool, cindex, JV_CONSTANT_Utf8);
1219 _Jv_Utf8Const *u_name = pool->data[cindex].utf8;
1221 = _Jv_FindClassFromSignatureNoException(u_name->chars(),
1222 klass->getClassLoaderInternal());
1223 // FIXME: not correct: we should lazily do this when trying to
1224 // read the element. This means that
1225 // AnnotationInvocationHandler needs to have a special case.
1227 // FIXME: original exception...
1228 throw new TypeNotPresentException(u_name->toString(), NULL);
1229 result = anno_class;
1233 result = parseAnnotation (klass, pool, bytes, last);
1237 int n_array_elts = read_u2 (bytes, last);
1238 jobjectArray aresult = _Jv_NewObjectArray (n_array_elts,
1239 &Object::class$, NULL);
1240 jobject *elts = elements (aresult);
1241 for (int i = 0; i < n_array_elts; ++i)
1242 elts[i] = parseAnnotationElement(klass, pool, bytes, last);
1247 throw new java::lang::InternalError();
1252 static ::java::lang::annotation::Annotation *
1253 parseAnnotation(jclass klass, _Jv_Constants *pool,
1254 unsigned char *&bytes, unsigned char *last)
1256 int type_index = read_u2 (bytes, last);
1257 check_constant (pool, type_index, JV_CONSTANT_Utf8);
1259 _Jv_Utf8Const *u_name = pool->data[type_index].utf8;
1260 jclass anno_class = _Jv_FindClassFromSignatureNoException(u_name->chars(),
1261 klass->getClassLoaderInternal());
1262 // FIXME: what to do if anno_class==NULL?
1264 ::java::util::HashMap *hmap = new ::java::util::HashMap();
1265 int npairs = read_u2 (bytes, last);
1266 for (int i = 0; i < npairs; ++i)
1268 int name_index = read_u2 (bytes, last);
1269 check_constant (pool, name_index, JV_CONSTANT_Utf8);
1270 jstring name = _Jv_NewStringUtf8Const (pool->data[name_index].utf8);
1271 jobject value = parseAnnotationElement (klass, pool, bytes, last);
1272 // FIXME: any checks needed for name?
1273 hmap->put(name, value);
1275 using namespace ::sun::reflect::annotation;
1276 return AnnotationInvocationHandler::create (anno_class,
1277 (::java::util::Map *) hmap);
1281 parseAnnotations(jclass klass, _Jv_Constants *pool,
1282 unsigned char *&bytes, unsigned char *last)
1284 int num = read_u2 (bytes, last);
1285 jobjectArray result = _Jv_NewObjectArray (num,
1286 &::java::lang::annotation::Annotation::class$,
1288 jobject *elts = elements (result);
1289 for (int i = 0; i < num; ++i)
1290 elts[i] = parseAnnotation(klass, pool, bytes, last);
1295 parseParameterAnnotations(jclass klass, _Jv_Constants *pool,
1296 unsigned char *&bytes, unsigned char *last)
1298 jclass anno = &::java::lang::annotation::Annotation::class$;
1299 jclass annoary = _Jv_GetArrayClass (anno, anno->getClassLoaderInternal());
1301 // FIXME: something should check the number of params versus the
1303 int n_params = read_u1 (bytes, last);
1304 jobjectArray result = _Jv_NewObjectArray (n_params, annoary, NULL);
1305 jobject *elts = elements (result);
1306 for (int i = 0; i < n_params; ++i)
1307 elts[i] = parseAnnotations(klass, pool, bytes, last);
1312 java::lang::Class::getMethodDefaultValue(::java::lang::reflect::Method *meth)
1314 // FIXME: could cache the value here...
1316 unsigned char *bytes = reflection_data;
1320 unsigned short meth_index = _Jv_FromReflectedMethod (meth) - methods;
1324 int type = read_u1 (bytes);
1325 if (type == JV_DONE_ATTR)
1327 int len = read_4 (bytes);
1328 unsigned char *next = bytes + len;
1329 if (type != JV_METHOD_ATTR)
1334 int kind = read_u1 (bytes, next);
1335 if (kind != JV_ANNOTATION_DEFAULT_KIND)
1340 int index = read_u2 (bytes, next);
1341 if (meth_index != index)
1347 // FIXME: could cache here. If we do then we have to clone any
1349 return parseAnnotationElement(this, &this->constants, bytes, next);
1354 java::lang::Class::getDeclaredAnnotations(jint /* jv_attr_type */ member_type,
1356 jint /* jv_attr_kind */ kind_req)
1358 using namespace java::lang::annotation;
1359 jobjectArray result;
1361 unsigned char *bytes = reflection_data;
1366 loader = (ClassLoader *)VMClassLoader::bootLoader;
1368 result = (loader->getDeclaredAnnotations
1369 (this, member_type, member_index, kind_req));
1375 int type = read_u1 (bytes);
1376 if (type == JV_DONE_ATTR)
1378 int len = read_4 (bytes);
1379 unsigned char *next = bytes + len;
1380 if (type != member_type)
1385 int kind = read_u1 (bytes, next);
1386 if (kind != kind_req)
1391 if (member_type != JV_CLASS_ATTR)
1393 int index = read_u2 (bytes, next);
1394 if (member_index != index)
1401 if (kind_req == JV_PARAMETER_ANNOTATIONS_KIND)
1402 result = ((parseParameterAnnotations
1403 (this, &this->constants, bytes, next)));
1405 result = ((parseAnnotations (this, &this->constants, bytes, next)));
1409 return (loader->putDeclaredAnnotations
1410 (this, member_type, member_index, kind_req, result));
1414 java::lang::Class::getDeclaredAnnotations(::java::lang::reflect::Method *meth,
1417 unsigned short meth_index = _Jv_FromReflectedMethod (meth) - methods;
1418 return getDeclaredAnnotations(JV_METHOD_ATTR, meth_index,
1420 ? JV_PARAMETER_ANNOTATIONS_KIND
1421 : JV_ANNOTATIONS_KIND));
1425 java::lang::Class::getDeclaredAnnotations(::java::lang::reflect::Constructor *cons,
1428 unsigned short meth_index = _Jv_FromReflectedConstructor (cons) - methods;
1429 return getDeclaredAnnotations(JV_METHOD_ATTR, meth_index,
1431 ? JV_PARAMETER_ANNOTATIONS_KIND
1432 : JV_ANNOTATIONS_KIND));
1436 java::lang::Class::getDeclaredAnnotations(::java::lang::reflect::Field *fld)
1438 unsigned short field_index = _Jv_FromReflectedField (fld) - fields;
1439 return getDeclaredAnnotations(JV_FIELD_ATTR, field_index,
1440 JV_ANNOTATIONS_KIND);
1443 JArray< ::java::lang::annotation::Annotation *> *
1444 java::lang::Class::getDeclaredAnnotationsInternal()
1446 return (JArray< ::java::lang::annotation::Annotation *> *) getDeclaredAnnotations(JV_CLASS_ATTR, 0, JV_ANNOTATIONS_KIND);
1450 resolve_class_constant (jclass klass, _Jv_Constants *pool, int cpool_index)
1452 check_constant (pool, cpool_index, JV_CONSTANT_Class);
1453 // FIXME: what is the correct thing to do with an exception here?
1454 return _Jv_Linker::resolve_pool_entry (klass, cpool_index, false).clazz;
1458 java::lang::Class::findInnerClassAttribute()
1460 unsigned char *bytes = reflection_data;
1465 int type = read_u1 (bytes);
1466 if (type == JV_DONE_ATTR)
1468 // After the type but before the length.
1469 unsigned char *save = bytes;
1470 int len = read_4 (bytes);
1471 unsigned char *next = bytes + len;
1472 if (type != JV_CLASS_ATTR)
1477 int kind = read_u1 (bytes, next);
1478 if (kind != JV_INNER_CLASSES_KIND)
1483 return save - reflection_data;
1489 java::lang::Class::findDeclaredClasses(JArray<jclass> *result,
1490 jboolean publicOnly,
1493 unsigned char *bytes = reflection_data + offset;
1494 int len = read_4 (bytes);
1495 unsigned char *next = bytes + len;
1497 read_u1 (bytes, next);
1498 int n_classes = read_u2 (bytes, next);
1500 for (int i = 0; i < n_classes; ++i)
1502 int inner_class_index = read_u2 (bytes, next);
1503 int outer_class_index = read_u2 (bytes, next);
1504 /*int inner_name_index = */ read_u2 (bytes, next);
1505 int inner_flags = read_u2 (bytes, next);
1507 if (inner_class_index == 0 || outer_class_index == 0)
1509 if (resolve_class_constant (this, &constants, outer_class_index) == this)
1511 jclass inner = resolve_class_constant (this, &constants,
1515 & java::lang::reflect::Modifier::PUBLIC) != 0))
1519 jclass *elts = elements (result);
1520 elts[count] = inner;
1531 java::lang::Class::getDeclaredClasses (jboolean publicOnly)
1533 int offset = findInnerClassAttribute();
1537 // No InnerClasses attribute, so no declared classes.
1541 count = findDeclaredClasses(NULL, publicOnly, offset);
1542 JArray<jclass> *result
1543 = (JArray<jclass> *) JvNewObjectArray (count, &java::lang::Class::class$,
1546 findDeclaredClasses(result, publicOnly, offset);
1551 java::lang::Class::getDeclaringClass (void)
1553 int offset = findInnerClassAttribute();
1557 unsigned char *bytes = reflection_data + offset;
1558 int len = read_4 (bytes);
1559 unsigned char *next = bytes + len;
1561 read_u1 (bytes, next);
1562 int n_classes = read_u2 (bytes, next);
1563 for (int i = 0; i < n_classes; ++i)
1565 int inner_class_index = read_u2 (bytes, next);
1566 int outer_class_index = read_u2 (bytes, next);
1567 /*int inner_name_index = */read_u2 (bytes, next);
1568 /*int inner_flags = */read_u2 (bytes, next);
1570 if (inner_class_index == 0 || outer_class_index == 0)
1572 if (resolve_class_constant (this, &constants, inner_class_index) == this)
1573 return resolve_class_constant (this, &constants, outer_class_index);
1580 java::lang::Class::isAnonymousClass()
1582 int offset = findInnerClassAttribute();
1586 unsigned char *bytes = reflection_data + offset;
1587 int len = read_4 (bytes);
1588 unsigned char *next = bytes + len;
1590 read_u1 (bytes, next);
1591 int n_classes = read_u2 (bytes, next);
1592 for (int i = 0; i < n_classes; ++i)
1594 int inner_class_index = read_u2 (bytes, next);
1595 /*int outer_class_index = */read_u2 (bytes, next);
1596 int inner_name_index = read_u2 (bytes, next);
1597 /*int inner_flags = */read_u2 (bytes, next);
1599 if (inner_class_index == 0)
1601 if (resolve_class_constant (this, &constants, inner_class_index) == this)
1602 return inner_name_index == 0;
1609 java::lang::Class::isLocalClass()
1612 indexes.i = getEnclosingMethodData();
1613 return indexes.i != 0;
1617 java::lang::Class::isMemberClass()
1619 // FIXME: is this correct?
1620 return !isLocalClass() && getDeclaringClass() != NULL;
1626 // Some class-related convenience functions.
1629 // Find a method declared in the class. If it is not declared locally
1630 // (or if it is inherited), return NULL.
1632 _Jv_GetMethodLocal (jclass klass, _Jv_Utf8Const *name,
1633 _Jv_Utf8Const *signature)
1635 for (int i = 0; i < klass->method_count; ++i)
1637 if (_Jv_equalUtf8Consts (name, klass->methods[i].name)
1638 && _Jv_equalUtf8Consts (signature, klass->methods[i].signature))
1639 return &klass->methods[i];
1645 _Jv_LookupDeclaredMethod (jclass klass, _Jv_Utf8Const *name,
1646 _Jv_Utf8Const *signature,
1647 jclass *declarer_result)
1649 for (; klass; klass = klass->getSuperclass())
1651 _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature);
1655 if (declarer_result)
1656 *declarer_result = klass;
1664 java::lang::reflect::Method *
1665 _Jv_GetReflectedMethod (jclass klass, _Jv_Utf8Const *name,
1666 _Jv_Utf8Const *signature)
1668 for (; klass; klass = klass->getSuperclass())
1670 _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature);
1673 using namespace java::lang::reflect;
1674 Method *rmethod = new Method ();
1675 rmethod->offset = (char*) meth - (char*) klass->methods;
1676 rmethod->declaringClass = klass;
1686 // NOTE: MCACHE_SIZE should be a power of 2 minus one.
1687 #define MCACHE_SIZE 31
1695 static __thread _Jv_mcache *method_cache;
1699 _Jv_FindMethodInCache (jclass klass MAYBE_UNUSED,
1700 _Jv_Utf8Const *name MAYBE_UNUSED,
1701 _Jv_Utf8Const *signature MAYBE_UNUSED)
1704 _Jv_mcache *cache = method_cache;
1707 int index = name->hash16 () & MCACHE_SIZE;
1708 _Jv_mcache *mc = &cache[index];
1709 _Jv_Method *m = mc->method;
1711 if (mc->klass == klass
1712 && _Jv_equalUtf8Consts (m->name, name)
1713 && _Jv_equalUtf8Consts (m->signature, signature))
1714 return mc->method->ncode;
1721 _Jv_AddMethodToCache (jclass klass MAYBE_UNUSED,
1722 _Jv_Method *method MAYBE_UNUSED)
1725 if (method_cache == NULL)
1726 method_cache = (_Jv_mcache *) _Jv_MallocUnchecked((MCACHE_SIZE + 1)
1727 * sizeof (_Jv_mcache));
1728 // If the allocation failed, just keep going.
1729 if (method_cache != NULL)
1731 int index = method->name->hash16 () & MCACHE_SIZE;
1732 method_cache[index].method = method;
1733 method_cache[index].klass = klass;
1738 // Free this thread's method cache. We explicitly manage this memory
1739 // as the GC does not yet know how to scan TLS on all platforms.
1741 _Jv_FreeMethodCache ()
1744 if (method_cache != NULL)
1746 _Jv_Free(method_cache);
1747 method_cache = NULL;
1753 _Jv_LookupInterfaceMethod (jclass klass, _Jv_Utf8Const *name,
1754 _Jv_Utf8Const *signature)
1756 using namespace java::lang::reflect;
1758 void *ncode = _Jv_FindMethodInCache (klass, name, signature);
1762 for (; klass; klass = klass->getSuperclass())
1764 _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature);
1768 if (Modifier::isStatic(meth->accflags))
1769 throw new java::lang::IncompatibleClassChangeError
1770 (_Jv_GetMethodString (klass, meth));
1771 if (Modifier::isAbstract(meth->accflags))
1772 throw new java::lang::AbstractMethodError
1773 (_Jv_GetMethodString (klass, meth));
1774 if (! Modifier::isPublic(meth->accflags))
1775 throw new java::lang::IllegalAccessError
1776 (_Jv_GetMethodString (klass, meth));
1778 _Jv_AddMethodToCache (klass, meth);
1782 throw new java::lang::IncompatibleClassChangeError;
1785 // Fast interface method lookup by index.
1787 _Jv_LookupInterfaceMethodIdx (jclass klass, jclass iface, int method_idx)
1789 _Jv_IDispatchTable *cldt = klass->idt;
1790 int idx = iface->ioffsets[cldt->iindex] + method_idx;
1791 return cldt->itable[idx];
1795 _Jv_IsAssignableFrom (jclass source, jclass target)
1797 if (source == target)
1800 // If target is array, so must source be.
1801 while (target->isArray ())
1803 if (! source->isArray())
1805 target = target->getComponentType();
1806 source = source->getComponentType();
1809 if (target->isInterface())
1811 // Abstract classes have no IDT, and IDTs provide no way to check
1812 // two interfaces for assignability.
1813 if (__builtin_expect
1814 (source->idt == NULL || source->isInterface(), false))
1815 return _Jv_InterfaceAssignableFrom (source, target);
1817 _Jv_IDispatchTable *cl_idt = source->idt;
1819 if (__builtin_expect ((target->ioffsets == NULL), false))
1820 return false; // No class implementing TARGET has been loaded.
1821 jshort cl_iindex = cl_idt->iindex;
1822 if (cl_iindex < target->ioffsets[0])
1824 jshort offset = target->ioffsets[cl_iindex];
1825 if (offset != -1 && offset < cl_idt->itable_length
1826 && cl_idt->itable[offset] == target)
1832 // Primitive TYPE classes are only assignable to themselves.
1833 if (__builtin_expect (target->isPrimitive() || source->isPrimitive(), false))
1836 if (target == &java::lang::Object::class$)
1838 else if (source->ancestors == NULL || target->ancestors == NULL)
1840 // We need this case when either SOURCE or TARGET has not has
1841 // its constant-time tables prepared.
1843 // At this point we know that TARGET can't be Object, so it is
1844 // safe to use that as the termination point.
1845 while (source && source != &java::lang::Object::class$)
1847 if (source == target)
1849 source = source->getSuperclass();
1852 else if (source->depth >= target->depth
1853 && source->ancestors[source->depth - target->depth] == target)
1859 // Interface type checking, the slow way. Returns TRUE if IFACE is a
1860 // superinterface of SOURCE. This is used when SOURCE is also an interface,
1861 // or a class with no interface dispatch table.
1863 _Jv_InterfaceAssignableFrom (jclass source, jclass iface)
1865 for (int i = 0; i < source->interface_count; i++)
1867 jclass interface = source->interfaces[i];
1868 if (iface == interface
1869 || _Jv_InterfaceAssignableFrom (interface, iface))
1873 if (!source->isInterface()
1874 && source->superclass
1875 && _Jv_InterfaceAssignableFrom (source->superclass, iface))
1882 _Jv_IsInstanceOf(jobject obj, jclass cl)
1884 if (__builtin_expect (!obj, false))
1886 return _Jv_IsAssignableFrom (JV_CLASS (obj), cl);
1890 _Jv_CheckCast (jclass c, jobject obj)
1892 if (__builtin_expect
1893 (obj != NULL && ! _Jv_IsAssignableFrom(JV_CLASS (obj), c), false))
1894 throw new java::lang::ClassCastException
1895 ((new java::lang::StringBuffer
1896 (obj->getClass()->getName()))->append
1897 (JvNewStringUTF(" cannot be cast to "))->append
1898 (c->getName())->toString());
1904 _Jv_CheckArrayStore (jobject arr, jobject obj)
1908 JvAssert (arr != NULL);
1909 jclass elt_class = (JV_CLASS (arr))->getComponentType();
1910 if (elt_class == &java::lang::Object::class$)
1912 jclass obj_class = JV_CLASS (obj);
1913 if (__builtin_expect
1914 (! _Jv_IsAssignableFrom (obj_class, elt_class), false))
1915 throw new java::lang::ArrayStoreException
1916 ((new java::lang::StringBuffer
1917 (JvNewStringUTF("Cannot store ")))->append
1918 (obj_class->getName())->append
1919 (JvNewStringUTF(" in array of type "))->append
1920 (elt_class->getName())->toString());
1925 _Jv_IsAssignableFromSlow (jclass source, jclass target)
1927 // First, strip arrays.
1928 while (target->isArray ())
1930 // If target is array, source must be as well.
1931 if (! source->isArray ())
1933 target = target->getComponentType ();
1934 source = source->getComponentType ();
1938 if (target == &java::lang::Object::class$)
1941 // Ensure that the classes have their supers installed.
1942 _Jv_Linker::wait_for_state (source, JV_STATE_LOADING);
1943 _Jv_Linker::wait_for_state (target, JV_STATE_LOADING);
1947 if (source == target)
1950 if (target->isPrimitive () || source->isPrimitive ())
1953 if (target->isInterface ())
1955 for (int i = 0; i < source->interface_count; ++i)
1957 // We use a recursive call because we also need to
1958 // check superinterfaces.
1959 if (_Jv_IsAssignableFromSlow (source->getInterface (i), target))
1963 source = source->getSuperclass ();
1965 while (source != NULL);
1970 // Lookup an interface method by name. This is very similar to
1971 // purpose to _getMethod, but the interfaces are quite different. It
1972 // might be a good idea for _getMethod to call this function.
1974 // Return true of the method is found, with the class in FOUND_CLASS
1975 // and the index in INDEX.
1977 _Jv_getInterfaceMethod (jclass search_class, jclass &found_class, int &index,
1978 const _Jv_Utf8Const *utf_name,
1979 const _Jv_Utf8Const *utf_sig)
1981 for (jclass klass = search_class; klass; klass = klass->getSuperclass())
1983 // FIXME: Throw an exception?
1984 if (!klass->isInterface ())
1987 int max = klass->method_count;
1989 for (int i = 0; i < max; ++i)
1991 // Skip <clinit> here, as it will not be in the IDT.
1992 if (klass->methods[i].name->first() == '<')
1995 if (_Jv_equalUtf8Consts (klass->methods[i].name, utf_name)
1996 && _Jv_equalUtf8Consts (klass->methods[i].signature, utf_sig))
1999 using namespace java::lang::reflect;
2001 // FIXME: Method must be public. Throw an exception?
2002 if (! Modifier::isPublic (klass->methods[i].accflags))
2005 found_class = klass;
2006 // Interface method indexes count from 1.
2015 // If we haven't found a match, and this class is an interface, then
2016 // check all the superinterfaces.
2017 if (search_class->isInterface())
2019 for (int i = 0; i < search_class->interface_count; ++i)
2021 using namespace java::lang::reflect;
2022 bool found = _Jv_getInterfaceMethod (search_class->interfaces[i],
2035 _Jv_FindInterpreterMethod (jclass klass, jmethodID desired_method)
2037 using namespace java::lang::reflect;
2039 _Jv_InterpClass *iclass
2040 = reinterpret_cast<_Jv_InterpClass *> (klass->aux_info);
2041 _Jv_MethodBase **imethods = _Jv_GetFirstMethod (iclass);
2043 for (int i = 0; i < JvNumMethods (klass); ++i)
2045 _Jv_MethodBase *imeth = imethods[i];
2046 if (imeth->get_method () == desired_method)
2054 // Return Utf8 name of a class. This function is here for code that
2055 // can't access klass->name directly.
2057 _Jv_GetClassNameUtf8 (jclass klass)
2063 _Jv_GetMethodDeclaringClass (jmethodID method)
2065 _Jv_StackTrace::UpdateNCodeMap ();
2066 jobject obj = reinterpret_cast<jobject> (method->ncode);
2067 return reinterpret_cast<jclass> (_Jv_StackTrace::ncodeMap->get (obj));
2071 _Jv_GetClassState (jclass klass)
2073 return klass->state;
2078 _Jv_GetInterpClassSourceFile (jclass klass)
2080 if (_Jv_IsInterpretedClass (klass))
2082 _Jv_InterpClass *iclass =
2083 reinterpret_cast<_Jv_InterpClass *> (klass->aux_info);
2084 return iclass->source_file_name;