1 // natClass.cc - Implementation of java.lang.Class native methods.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
4 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/Constructor.h>
33 #include <java/lang/AbstractMethodError.h>
34 #include <java/lang/ArrayStoreException.h>
35 #include <java/lang/ClassCastException.h>
36 #include <java/lang/ClassNotFoundException.h>
37 #include <java/lang/ExceptionInInitializerError.h>
38 #include <java/lang/IllegalAccessException.h>
39 #include <java/lang/IllegalAccessError.h>
40 #include <java/lang/IllegalArgumentException.h>
41 #include <java/lang/IncompatibleClassChangeError.h>
42 #include <java/lang/NoSuchFieldError.h>
43 #include <java/lang/ArrayIndexOutOfBoundsException.h>
44 #include <java/lang/InstantiationException.h>
45 #include <java/lang/NoClassDefFoundError.h>
46 #include <java/lang/NoSuchFieldException.h>
47 #include <java/lang/NoSuchMethodError.h>
48 #include <java/lang/NoSuchMethodException.h>
49 #include <java/lang/Thread.h>
50 #include <java/lang/NullPointerException.h>
51 #include <java/lang/RuntimePermission.h>
52 #include <java/lang/System.h>
53 #include <java/lang/SecurityException.h>
54 #include <java/lang/SecurityManager.h>
55 #include <java/lang/StringBuffer.h>
56 #include <java/lang/VMClassLoader.h>
57 #include <gcj/method.h>
58 #include <gnu/gcj/RawData.h>
59 #include <java/lang/VerifyError.h>
60 #include <java/lang/InternalError.h>
61 #include <java/lang/TypeNotPresentException.h>
62 #include <java/lang/Byte.h>
63 #include <java/lang/Short.h>
64 #include <java/lang/Integer.h>
65 #include <java/lang/Float.h>
66 #include <java/lang/Double.h>
67 #include <java/lang/Long.h>
68 #include <java/lang/Character.h>
69 #include <java/lang/Boolean.h>
70 #include <java/lang/annotation/Annotation.h>
71 #include <java/util/HashMap.h>
72 #include <java/util/Map.h>
73 #include <sun/reflect/annotation/AnnotationInvocationHandler.h>
74 #include <java/lang/Enum.h>
76 #include <java-cpool.h>
77 #include <java-interp.h>
78 #include <java-assert.h>
79 #include <java-stack.h>
80 #include <execution.h>
87 java::lang::Class::forName (jstring className, jboolean initialize,
88 java::lang::ClassLoader *loader)
91 throw new java::lang::NullPointerException;
93 jsize length = _Jv_GetStringUTFLength (className);
95 _Jv_GetStringUTFRegion (className, 0, className->length(), buffer);
97 _Jv_Utf8Const *name = _Jv_makeUtf8Const (buffer, length);
99 if (! _Jv_VerifyClassName (name))
100 throw new java::lang::ClassNotFoundException (className);
102 jclass klass = (buffer[0] == '['
103 ? _Jv_FindClassFromSignature (name->chars(), loader)
104 : _Jv_FindClass (name, loader));
107 throw new java::lang::ClassNotFoundException (className);
110 _Jv_InitClass (klass);
116 java::lang::Class::forName (jstring className)
118 java::lang::ClassLoader *loader = NULL;
120 jclass caller = _Jv_StackTrace::GetCallingClass (&Class::class$);
122 loader = caller->getClassLoaderInternal();
124 return forName (className, true, loader);
127 java::lang::ClassLoader *
128 java::lang::Class::getClassLoader (void)
130 java::lang::SecurityManager *s = java::lang::System::getSecurityManager();
133 jclass caller = _Jv_StackTrace::GetCallingClass (&Class::class$);
134 return getClassLoader (caller);
140 java::lang::ClassLoader *
141 java::lang::Class::getClassLoader (jclass caller)
143 java::lang::SecurityManager *s = java::lang::System::getSecurityManager();
146 ClassLoader *caller_loader = caller->getClassLoaderInternal();
148 // If the caller has a non-null class loader, and that loader
149 // is not this class' loader or an ancestor thereof, then do a
151 if (caller_loader != NULL && ! caller_loader->isAncestorOf(loader))
152 s->checkPermission (new RuntimePermission (JvNewStringLatin1 ("getClassLoader")));
158 java::lang::reflect::Constructor *
159 java::lang::Class::getConstructor (JArray<jclass> *param_types)
161 memberAccessCheck(java::lang::reflect::Member::PUBLIC);
163 jstring partial_sig = getSignature (param_types, true);
164 jint hash = partial_sig->hashCode ();
166 int i = isPrimitive () ? 0 : method_count;
169 if (_Jv_equalUtf8Consts (methods[i].name, init_name)
170 && _Jv_equal (methods[i].signature, partial_sig, hash))
172 // Found it. For getConstructor, the constructor must be
174 using namespace java::lang::reflect;
175 if (! Modifier::isPublic(methods[i].accflags))
177 Constructor *cons = new Constructor ();
178 cons->offset = (char *) (&methods[i]) - (char *) methods;
179 cons->declaringClass = this;
183 throw new java::lang::NoSuchMethodException (_Jv_NewStringUtf8Const (init_name));
186 JArray<java::lang::reflect::Constructor *> *
187 java::lang::Class::getDeclaredConstructors (jboolean publicOnly)
189 int numConstructors = 0;
190 int max = isPrimitive () ? 0 : method_count;
192 for (i = max; --i >= 0; )
194 _Jv_Method *method = &methods[i];
195 if (method->name == NULL
196 || ! _Jv_equalUtf8Consts (method->name, init_name))
199 && ! java::lang::reflect::Modifier::isPublic(method->accflags))
203 JArray<java::lang::reflect::Constructor *> *result
204 = (JArray<java::lang::reflect::Constructor *> *)
205 JvNewObjectArray (numConstructors,
206 &java::lang::reflect::Constructor::class$,
208 java::lang::reflect::Constructor** cptr = elements (result);
209 for (i = 0; i < max; i++)
211 _Jv_Method *method = &methods[i];
212 if (method->name == NULL
213 || ! _Jv_equalUtf8Consts (method->name, init_name))
216 && ! java::lang::reflect::Modifier::isPublic(method->accflags))
218 java::lang::reflect::Constructor *cons
219 = new java::lang::reflect::Constructor ();
220 cons->offset = (char *) method - (char *) methods;
221 cons->declaringClass = this;
227 java::lang::reflect::Constructor *
228 java::lang::Class::getDeclaredConstructor (JArray<jclass> *param_types)
230 memberAccessCheck(java::lang::reflect::Member::DECLARED);
232 jstring partial_sig = getSignature (param_types, true);
233 jint hash = partial_sig->hashCode ();
235 int i = isPrimitive () ? 0 : method_count;
238 if (_Jv_equalUtf8Consts (methods[i].name, init_name)
239 && _Jv_equal (methods[i].signature, partial_sig, hash))
242 using namespace java::lang::reflect;
243 Constructor *cons = new Constructor ();
244 cons->offset = (char *) (&methods[i]) - (char *) methods;
245 cons->declaringClass = this;
249 throw new java::lang::NoSuchMethodException (_Jv_NewStringUtf8Const (init_name));
252 java::lang::reflect::Field *
253 java::lang::Class::getField (jstring name, jint hash)
255 java::lang::reflect::Field* rfield;
256 for (int i = 0; i < field_count; i++)
258 _Jv_Field *field = &fields[i];
259 if (! _Jv_equal (field->name, name, hash))
261 if (! (field->getModifiers() & java::lang::reflect::Modifier::PUBLIC))
263 rfield = new java::lang::reflect::Field ();
264 rfield->offset = (char*) field - (char*) fields;
265 rfield->declaringClass = this;
269 jclass superclass = getSuperclass();
270 if (superclass == NULL)
272 rfield = superclass->getField(name, hash);
273 for (int i = 0; i < interface_count && rfield == NULL; ++i)
274 rfield = interfaces[i]->getField (name, hash);
278 java::lang::reflect::Field *
279 java::lang::Class::getDeclaredField (jstring name)
281 memberAccessCheck(java::lang::reflect::Member::DECLARED);
282 int hash = name->hashCode();
283 for (int i = 0; i < field_count; i++)
285 _Jv_Field *field = &fields[i];
286 if (! _Jv_equal (field->name, name, hash))
288 java::lang::reflect::Field* rfield = new java::lang::reflect::Field ();
289 rfield->offset = (char*) field - (char*) fields;
290 rfield->declaringClass = this;
294 throw new java::lang::NoSuchFieldException (name);
297 JArray<java::lang::reflect::Field *> *
298 java::lang::Class::getDeclaredFields (jboolean public_only)
304 for (int i = 0; i < field_count; ++i)
306 _Jv_Field *field = &fields[i];
307 if ((field->flags & java::lang::reflect::Modifier::PUBLIC))
314 JArray<java::lang::reflect::Field *> *result
315 = (JArray<java::lang::reflect::Field *> *)
316 JvNewObjectArray (size, &java::lang::reflect::Field::class$, NULL);
317 java::lang::reflect::Field** fptr = elements (result);
318 for (int i = 0; i < field_count; i++)
320 _Jv_Field *field = &fields[i];
322 && ! (field->flags & java::lang::reflect::Modifier::PUBLIC))
324 java::lang::reflect::Field* rfield = new java::lang::reflect::Field ();
325 rfield->offset = (char*) field - (char*) fields;
326 rfield->declaringClass = this;
333 java::lang::Class::getSignature (java::lang::StringBuffer *buffer)
336 buffer->append((jchar) method_count);
339 jstring name = getName();
340 if (name->charAt(0) != '[')
341 buffer->append((jchar) 'L');
342 buffer->append(name);
343 if (name->charAt(0) != '[')
344 buffer->append((jchar) ';');
348 // This doesn't have to be native. It is an implementation detail
349 // only called from the C++ code, though, so maybe this is clearer.
351 java::lang::Class::getSignature (JArray<jclass> *param_types,
352 jboolean is_constructor)
354 java::lang::StringBuffer *buf = new java::lang::StringBuffer ();
355 buf->append((jchar) '(');
356 // A NULL param_types means "no parameters".
357 if (param_types != NULL)
359 jclass *v = elements (param_types);
360 for (int i = 0; i < param_types->length; ++i)
361 v[i]->getSignature(buf);
363 buf->append((jchar) ')');
365 buf->append((jchar) 'V');
366 return buf->toString();
369 java::lang::reflect::Method *
370 java::lang::Class::_getDeclaredMethod (jstring name,
371 JArray<jclass> *param_types)
373 jstring partial_sig = getSignature (param_types, false);
374 jint p_len = partial_sig->length();
375 _Jv_Utf8Const *utf_name = _Jv_makeUtf8Const (name);
376 int i = isPrimitive () ? 0 : method_count;
379 if (_Jv_equalUtf8Consts (methods[i].name, utf_name)
380 && _Jv_equaln (methods[i].signature, partial_sig, p_len)
381 && (methods[i].accflags
382 & java::lang::reflect::Modifier::INVISIBLE) == 0)
385 using namespace java::lang::reflect;
386 Method *rmethod = new Method ();
387 rmethod->offset = (char*) (&methods[i]) - (char*) methods;
388 rmethod->declaringClass = this;
395 JArray<java::lang::reflect::Method *> *
396 java::lang::Class::getDeclaredMethods (void)
398 memberAccessCheck(java::lang::reflect::Member::DECLARED);
401 int max = isPrimitive () ? 0 : method_count;
403 for (i = max; --i >= 0; )
405 _Jv_Method *method = &methods[i];
406 if (method->name == NULL
407 || _Jv_equalUtf8Consts (method->name, clinit_name)
408 || _Jv_equalUtf8Consts (method->name, init_name)
409 || _Jv_equalUtf8Consts (method->name, finit_name)
410 || (methods[i].accflags
411 & java::lang::reflect::Modifier::INVISIBLE) != 0)
415 JArray<java::lang::reflect::Method *> *result
416 = (JArray<java::lang::reflect::Method *> *)
417 JvNewObjectArray (numMethods, &java::lang::reflect::Method::class$, NULL);
418 java::lang::reflect::Method** mptr = elements (result);
419 for (i = 0; i < max; i++)
421 _Jv_Method *method = &methods[i];
422 if (method->name == NULL
423 || _Jv_equalUtf8Consts (method->name, clinit_name)
424 || _Jv_equalUtf8Consts (method->name, init_name)
425 || _Jv_equalUtf8Consts (method->name, finit_name)
426 || (methods[i].accflags
427 & java::lang::reflect::Modifier::INVISIBLE) != 0)
429 java::lang::reflect::Method* rmethod
430 = new java::lang::reflect::Method ();
431 rmethod->offset = (char*) method - (char*) methods;
432 rmethod->declaringClass = this;
439 java::lang::Class::getName (void)
441 return name->toString();
445 java::lang::Class::getInterfaces (void)
447 jobjectArray r = JvNewObjectArray (interface_count, getClass (), NULL);
448 jobject *data = elements (r);
449 for (int i = 0; i < interface_count; ++i)
451 typedef unsigned int uaddr __attribute__ ((mode (pointer)));
452 data[i] = interfaces[i];
453 if ((uaddr)data[i] < (uaddr)constants.size)
454 fprintf (stderr, "ERROR !!!\n");
456 return reinterpret_cast<JArray<jclass> *> (r);
459 java::lang::reflect::Method *
460 java::lang::Class::_getMethod (jstring name, JArray<jclass> *param_types)
462 jstring partial_sig = getSignature (param_types, false);
463 jint p_len = partial_sig->length();
464 _Jv_Utf8Const *utf_name = _Jv_makeUtf8Const (name);
466 for (Class *klass = this; klass; klass = klass->getSuperclass())
468 int i = klass->isPrimitive () ? 0 : klass->method_count;
471 if (_Jv_equalUtf8Consts (klass->methods[i].name, utf_name)
472 && _Jv_equaln (klass->methods[i].signature, partial_sig, p_len)
473 && (klass->methods[i].accflags
474 & java::lang::reflect::Modifier::INVISIBLE) == 0)
477 using namespace java::lang::reflect;
479 // Method must be public.
480 if (! Modifier::isPublic (klass->methods[i].accflags))
483 Method *rmethod = new Method ();
484 rmethod->offset = ((char *) (&klass->methods[i])
485 - (char *) klass->methods);
486 rmethod->declaringClass = klass;
492 // If we haven't found a match, and this class is an interface, then
493 // check all the superinterfaces.
496 for (int i = 0; i < interface_count; ++i)
498 using namespace java::lang::reflect;
499 Method *rmethod = interfaces[i]->_getMethod (name, param_types);
508 // This is a very slow implementation, since it re-scans all the
509 // methods we've already listed to make sure we haven't duplicated a
510 // method. It also over-estimates the required size, so we have to
511 // shrink the result array later.
513 java::lang::Class::_getMethods (JArray<java::lang::reflect::Method *> *result,
518 // First examine all local methods
519 for (int i = isPrimitive () ? 0 : method_count; --i >= 0; )
521 _Jv_Method *method = &methods[i];
522 if (method->name == NULL
523 || _Jv_equalUtf8Consts (method->name, clinit_name)
524 || _Jv_equalUtf8Consts (method->name, init_name)
525 || _Jv_equalUtf8Consts (method->name, finit_name)
527 & java::lang::reflect::Modifier::INVISIBLE) != 0)
529 // Only want public methods.
530 if (! java::lang::reflect::Modifier::isPublic (method->accflags))
533 // This is where we over-count the slots required if we aren't
534 // filling the result for real.
538 java::lang::reflect::Method **mp = elements (result);
539 // If we already have a method with this name and signature,
540 // then ignore this one. This can happen with virtual
542 for (int j = 0; j < offset; ++j)
544 _Jv_Method *meth_2 = _Jv_FromReflectedMethod (mp[j]);
545 if (_Jv_equalUtf8Consts (method->name, meth_2->name)
546 && _Jv_equalUtf8Consts (method->signature,
559 using namespace java::lang::reflect;
560 Method *rmethod = new Method ();
561 rmethod->offset = (char *) method - (char *) methods;
562 rmethod->declaringClass = this;
563 Method **mp = elements (result);
564 mp[offset + count] = rmethod;
570 // Now examine superclasses.
571 if (getSuperclass () != NULL)
573 jint s_count = getSuperclass()->_getMethods (result, offset);
578 // Finally, examine interfaces.
579 for (int i = 0; i < interface_count; ++i)
581 int f_count = interfaces[i]->_getMethods (result, offset);
589 JArray<java::lang::reflect::Method *> *
590 java::lang::Class::getMethods (void)
592 using namespace java::lang::reflect;
594 memberAccessCheck(Member::PUBLIC);
596 // This will overestimate the size we need.
597 jint count = _getMethods (NULL, 0);
599 JArray<Method *> *result
600 = ((JArray<Method *> *) JvNewObjectArray (count,
604 // When filling the array for real, we get the actual count. Then
605 // we resize the array.
606 jint real_count = _getMethods (result, 0);
608 if (real_count != count)
611 = ((JArray<Method *> *) JvNewObjectArray (real_count,
615 Method **destp = elements (r2);
616 Method **srcp = elements (result);
618 for (int i = 0; i < real_count; ++i)
628 java::lang::Class::isAssignableFrom (jclass klass)
630 // Arguments may not have been initialized, given ".class" syntax.
631 // This ensures we can at least look at their superclasses.
632 _Jv_Linker::wait_for_state (this, JV_STATE_LOADING);
633 _Jv_Linker::wait_for_state (klass, JV_STATE_LOADING);
634 return _Jv_IsAssignableFrom (klass, this);
638 java::lang::Class::isInstance (jobject obj)
642 return _Jv_IsAssignableFrom (JV_CLASS (obj), this);
646 java::lang::Class::newInstance (void)
648 memberAccessCheck(java::lang::reflect::Member::PUBLIC);
653 || java::lang::reflect::Modifier::isAbstract(accflags))
654 throw new java::lang::InstantiationException (getName ());
656 _Jv_InitClass (this);
658 _Jv_Method *meth = _Jv_GetMethodLocal (this, init_name, void_signature);
660 throw new java::lang::InstantiationException (getName());
662 jobject r = _Jv_AllocObject (this);
663 ((void (*) (jobject)) meth->ncode) (r);
668 java::lang::Class::finalize (void)
670 engine->unregister(this);
674 _Jv_ClosureList::releaseClosures (_Jv_ClosureList **closures)
679 while (_Jv_ClosureList *current = *closures)
681 *closures = current->next;
682 ffi_closure_free (current->ptr);
687 _Jv_ClosureList::registerClosure (jclass klass, void *ptr)
689 _Jv_ClosureList **closures = klass->engine->get_closure_list (klass);
691 this->next = *closures;
695 // This implements the initialization process for a class. From Spec
698 java::lang::Class::initializeClass (void)
700 // Short-circuit to avoid needless locking (expression includes
701 // JV_STATE_PHANTOM and JV_STATE_DONE).
702 if (state >= JV_STATE_PHANTOM)
705 // Step 1. We introduce a new scope so we can synchronize more
708 JvSynchronize sync (this);
710 if (state < JV_STATE_LINKED)
714 _Jv_Linker::wait_for_state(this, JV_STATE_LINKED);
716 catch (java::lang::SecurityException *x)
720 catch (java::lang::Throwable *x)
722 // Turn into a NoClassDefFoundError.
723 java::lang::NoClassDefFoundError *result
724 = new java::lang::NoClassDefFoundError(getName());
725 result->initCause(x);
731 java::lang::Thread *self = java::lang::Thread::currentThread();
732 self = (java::lang::Thread *) ((long) self | 1);
733 while (state == JV_STATE_IN_PROGRESS && thread && thread != self)
737 if (state == JV_STATE_DONE || state == JV_STATE_IN_PROGRESS)
741 if (state == JV_STATE_ERROR)
742 throw new java::lang::NoClassDefFoundError (getName());
746 _Jv_Linker::wait_for_state (this, JV_STATE_LINKED);
747 state = JV_STATE_IN_PROGRESS;
751 if (! isInterface () && superclass)
755 _Jv_InitClass (superclass);
757 catch (java::lang::SecurityException *x)
761 catch (java::lang::Throwable *except)
763 // Caught an exception.
764 JvSynchronize sync (this);
765 state = JV_STATE_ERROR;
771 // Steps 8, 9, 10, 11.
774 _Jv_Method *meth = _Jv_GetMethodLocal (this, clinit_name,
777 ((void (*) (void)) meth->ncode) ();
779 catch (java::lang::SecurityException *x)
783 catch (java::lang::Throwable *except)
785 if (! java::lang::Error::class$.isInstance(except))
789 except = new ExceptionInInitializerError (except);
791 catch (java::lang::Throwable *t)
797 JvSynchronize sync (this);
798 state = JV_STATE_ERROR;
803 JvSynchronize sync (this);
804 state = JV_STATE_DONE;
808 // Only used by serialization
809 java::lang::reflect::Field *
810 java::lang::Class::getPrivateField (jstring name)
812 int hash = name->hashCode ();
814 java::lang::reflect::Field* rfield;
815 for (int i = 0; i < field_count; i++)
817 _Jv_Field *field = &fields[i];
818 if (! _Jv_equal (field->name, name, hash))
820 rfield = new java::lang::reflect::Field ();
821 rfield->offset = (char*) field - (char*) fields;
822 rfield->declaringClass = this;
826 jclass superclass = getSuperclass();
827 if (superclass == NULL)
829 rfield = superclass->getPrivateField(name);
830 for (int i = 0; i < interface_count && rfield == NULL; ++i)
831 rfield = interfaces[i]->getPrivateField (name);
835 // Only used by serialization
836 java::lang::reflect::Method *
837 java::lang::Class::getPrivateMethod (jstring name, JArray<jclass> *param_types)
839 jstring partial_sig = getSignature (param_types, false);
840 jint p_len = partial_sig->length();
841 _Jv_Utf8Const *utf_name = _Jv_makeUtf8Const (name);
842 for (Class *klass = this; klass; klass = klass->getSuperclass())
844 int i = klass->isPrimitive () ? 0 : klass->method_count;
847 if (_Jv_equalUtf8Consts (klass->methods[i].name, utf_name)
848 && _Jv_equaln (klass->methods[i].signature, partial_sig, p_len))
851 using namespace java::lang::reflect;
853 Method *rmethod = new Method ();
854 rmethod->offset = ((char *) (&klass->methods[i])
855 - (char *) klass->methods);
856 rmethod->declaringClass = klass;
861 throw new java::lang::NoSuchMethodException (name);
864 // Private accessor method for Java code to retrieve the protection domain.
865 java::security::ProtectionDomain *
866 java::lang::Class::getProtectionDomain0 ()
868 return protectionDomain;
872 java::lang::Class::getSigners()
878 java::lang::Class::setSigners(JArray<jobject> *s)
886 read_u1 (unsigned char *&p)
892 read_u1 (unsigned char *&p, unsigned char *next)
895 throw new java::lang::InternalError();
900 read_u2 (unsigned char *&p)
902 unsigned int b1 = *p++;
903 unsigned int b2 = *p++;
904 return (b1 << 8) | b2;
908 read_u2 (unsigned char *&p, unsigned char *next)
911 throw new java::lang::InternalError();
916 read_4 (unsigned char *&p)
922 return (b1 << 24) | (b2 << 16) | (b3 << 8) | b4;
926 java::lang::Class::getReflectionSignature (jint /*jv_attr_type*/ type,
929 // We just re-parse the bytecode for this data each time. If
930 // necessary we can cache results, but I suspect this is not
931 // performance sensitive.
932 unsigned char *bytes = reflection_data;
937 int kind = read_u1 (bytes);
938 if (kind == JV_DONE_ATTR)
940 int len = read_4 (bytes);
941 unsigned char *next = bytes + len;
947 if (type != JV_CLASS_ATTR)
949 unsigned short index = read_u2 (bytes, next);
950 if (index != obj_index)
956 int nt = read_u1 (bytes, next);
957 if (nt != JV_SIGNATURE_KIND)
962 unsigned int cpool_idx = read_u2 (bytes, next);
963 if (cpool_idx >= (unsigned int) constants.size
964 || constants.tags[cpool_idx] != JV_CONSTANT_Utf8)
966 // We just ignore errors for now. It isn't clear what is
967 // best to do here, as an encoding error here means a bug
968 // either in the compiler or in defineclass.cc.
971 return _Jv_NewStringUtf8Const (constants.data[cpool_idx].utf8);
976 java::lang::Class::getReflectionSignature (::java::lang::reflect::Constructor *c)
978 _Jv_Method *meth = _Jv_FromReflectedConstructor (c);
979 unsigned short meth_index = meth - methods;
980 return getReflectionSignature (JV_METHOD_ATTR, meth_index);
984 java::lang::Class::getReflectionSignature (::java::lang::reflect::Method *m)
986 _Jv_Method *meth = _Jv_FromReflectedMethod (m);
987 unsigned short meth_index = meth - methods;
988 return getReflectionSignature (JV_METHOD_ATTR, meth_index);
992 java::lang::Class::getReflectionSignature (::java::lang::reflect::Field *f)
994 _Jv_Field *fld = _Jv_FromReflectedField (f);
995 unsigned short fld_index = fld - fields;
996 return getReflectionSignature (JV_FIELD_ATTR, fld_index);
1000 java::lang::Class::getClassSignature()
1002 return getReflectionSignature (JV_CLASS_ATTR, 0);
1006 java::lang::Class::getEnclosingMethodData()
1008 unsigned char *bytes = reflection_data;
1013 int kind = read_u1 (bytes);
1014 if (kind == JV_DONE_ATTR)
1016 int len = read_4 (bytes);
1017 unsigned char *next = bytes + len;
1018 if (kind != JV_CLASS_ATTR)
1023 int type = read_u1 (bytes, next);
1024 if (type != JV_ENCLOSING_METHOD_KIND)
1029 int class_index = read_u2 (bytes, next);
1030 int method_index = read_u2 (bytes, next);
1032 _Jv_storeIndexes (&result, class_index, method_index);
1038 java::lang::Class::getEnclosingClass()
1041 indexes.i = getEnclosingMethodData();
1044 _Jv_ushort class_index, method_index;
1045 _Jv_loadIndexes (&indexes, class_index, method_index);
1046 return _Jv_Linker::resolve_pool_entry (this, class_index).clazz;
1049 ::java::lang::reflect::Method *
1050 java::lang::Class::getEnclosingMethod()
1053 indexes.i = getEnclosingMethodData();
1056 _Jv_ushort class_index, method_index;
1057 _Jv_loadIndexes (&indexes, class_index, method_index);
1059 _Jv_Method *method = _Jv_Linker::resolve_method_entry (this, found_class,
1063 using namespace java::lang::reflect;
1064 Method *rmethod = new Method ();
1065 rmethod->offset = (char *) method - (char *) found_class->methods;
1066 rmethod->declaringClass = found_class;
1070 ::java::lang::reflect::Constructor *
1071 java::lang::Class::getEnclosingConstructor()
1074 indexes.i = getEnclosingMethodData();
1077 _Jv_ushort class_index, method_index;
1078 _Jv_loadIndexes (&indexes, class_index, method_index);
1080 _Jv_Method *method = _Jv_Linker::resolve_method_entry (this, found_class,
1084 using namespace java::lang::reflect;
1085 Constructor *cons = new Constructor ();
1086 cons->offset = (char *) method - (char *) found_class->methods;
1087 cons->declaringClass = this;
1092 check_constant (_Jv_Constants *pool, jint cpool_index, jint type)
1094 if (cpool_index <= 0 || cpool_index >= pool->size)
1095 throw new InternalError(JvNewStringLatin1("invalid constant pool index"));
1096 if ((pool->tags[cpool_index] &
1097 ~(JV_CONSTANT_ResolvedFlag|JV_CONSTANT_LazyFlag)) != type)
1099 ::java::lang::StringBuffer *sb = new ::java::lang::StringBuffer();
1100 sb->append(JvNewStringLatin1("expected pool constant "));
1102 sb->append(JvNewStringLatin1(" but got "));
1103 sb->append(jint (pool->tags[cpool_index]));
1104 throw new InternalError(sb->toString());
1108 // Forward declaration
1109 static ::java::lang::annotation::Annotation *
1110 parseAnnotation(jclass klass, _Jv_Constants *pool,
1111 unsigned char *&bytes, unsigned char *last);
1114 parseAnnotationElement(jclass klass, _Jv_Constants *pool,
1115 unsigned char *&bytes, unsigned char *last)
1117 int tag = read_u1 (bytes, last);
1123 int cindex = read_u2 (bytes, last);
1124 check_constant (pool, cindex, JV_CONSTANT_Integer);
1125 result = Byte::valueOf (pool->data[cindex].i);
1130 int cindex = read_u2 (bytes, last);
1131 check_constant (pool, cindex, JV_CONSTANT_Integer);
1132 result = Character::valueOf (pool->data[cindex].i);
1137 int cindex = read_u2 (bytes, last);
1138 check_constant (pool, cindex, JV_CONSTANT_Integer);
1139 result = Short::valueOf (pool->data[cindex].i);
1144 int cindex = read_u2 (bytes, last);
1145 check_constant (pool, cindex, JV_CONSTANT_Integer);
1146 result = Boolean::valueOf (jboolean (pool->data[cindex].i));
1151 int cindex = read_u2 (bytes, last);
1152 check_constant (pool, cindex, JV_CONSTANT_Integer);
1153 result = Integer::valueOf (pool->data[cindex].i);
1158 int cindex = read_u2 (bytes, last);
1159 check_constant (pool, cindex, JV_CONSTANT_Double);
1161 memcpy (&word, &pool->data[cindex], 2 * sizeof (_Jv_word));
1162 result = Double::valueOf (word.d);
1167 int cindex = read_u2 (bytes, last);
1168 check_constant (pool, cindex, JV_CONSTANT_Float);
1169 result = Float::valueOf (pool->data[cindex].f);
1174 int cindex = read_u2 (bytes, last);
1175 check_constant (pool, cindex, JV_CONSTANT_Long);
1177 memcpy (&word, &pool->data[cindex], 2 * sizeof (_Jv_word));
1178 result = Long::valueOf (word.l);
1183 int cindex = read_u2 (bytes, last);
1184 // Despite what the JVM spec says, compilers generate a Utf8
1185 // constant here, not a String.
1186 check_constant (pool, cindex, JV_CONSTANT_Utf8);
1187 result = pool->data[cindex].utf8->toString();
1192 int type_name_index = read_u2 (bytes, last);
1193 check_constant (pool, type_name_index, JV_CONSTANT_Utf8);
1194 int const_name_index = read_u2 (bytes, last);
1195 check_constant (pool, const_name_index, JV_CONSTANT_Utf8);
1197 _Jv_Utf8Const *u_name = pool->data[type_name_index].utf8;
1198 _Jv_Utf8Const *e_name = pool->data[const_name_index].utf8;
1200 // FIXME: throw correct exceptions at the correct times.
1201 jclass e_class = _Jv_FindClassFromSignature(u_name->chars(),
1202 klass->getClassLoaderInternal());
1203 result = ::java::lang::Enum::valueOf(e_class, e_name->toString());
1208 int cindex = read_u2 (bytes, last);
1209 check_constant (pool, cindex, JV_CONSTANT_Utf8);
1210 _Jv_Utf8Const *u_name = pool->data[cindex].utf8;
1212 = _Jv_FindClassFromSignatureNoException(u_name->chars(),
1213 klass->getClassLoaderInternal());
1214 // FIXME: not correct: we should lazily do this when trying to
1215 // read the element. This means that
1216 // AnnotationInvocationHandler needs to have a special case.
1218 // FIXME: original exception...
1219 throw new TypeNotPresentException(u_name->toString(), NULL);
1220 result = anno_class;
1224 result = parseAnnotation (klass, pool, bytes, last);
1228 int n_array_elts = read_u2 (bytes, last);
1229 jobjectArray aresult = _Jv_NewObjectArray (n_array_elts,
1230 &Object::class$, NULL);
1231 jobject *elts = elements (aresult);
1232 for (int i = 0; i < n_array_elts; ++i)
1233 elts[i] = parseAnnotationElement(klass, pool, bytes, last);
1238 throw new java::lang::InternalError();
1243 static ::java::lang::annotation::Annotation *
1244 parseAnnotation(jclass klass, _Jv_Constants *pool,
1245 unsigned char *&bytes, unsigned char *last)
1247 int type_index = read_u2 (bytes, last);
1248 check_constant (pool, type_index, JV_CONSTANT_Utf8);
1250 _Jv_Utf8Const *u_name = pool->data[type_index].utf8;
1251 jclass anno_class = _Jv_FindClassFromSignatureNoException(u_name->chars(),
1252 klass->getClassLoaderInternal());
1253 // FIXME: what to do if anno_class==NULL?
1255 ::java::util::HashMap *hmap = new ::java::util::HashMap();
1256 int npairs = read_u2 (bytes, last);
1257 for (int i = 0; i < npairs; ++i)
1259 int name_index = read_u2 (bytes, last);
1260 check_constant (pool, name_index, JV_CONSTANT_Utf8);
1261 jstring name = _Jv_NewStringUtf8Const (pool->data[name_index].utf8);
1262 jobject value = parseAnnotationElement (klass, pool, bytes, last);
1263 // FIXME: any checks needed for name?
1264 hmap->put(name, value);
1266 using namespace ::sun::reflect::annotation;
1267 return AnnotationInvocationHandler::create (anno_class,
1268 (::java::util::Map *) hmap);
1272 parseAnnotations(jclass klass, _Jv_Constants *pool,
1273 unsigned char *&bytes, unsigned char *last)
1275 int num = read_u2 (bytes, last);
1276 jobjectArray result = _Jv_NewObjectArray (num,
1277 &::java::lang::annotation::Annotation::class$,
1279 jobject *elts = elements (result);
1280 for (int i = 0; i < num; ++i)
1281 elts[i] = parseAnnotation(klass, pool, bytes, last);
1286 parseParameterAnnotations(jclass klass, _Jv_Constants *pool,
1287 unsigned char *&bytes, unsigned char *last)
1289 jclass anno = &::java::lang::annotation::Annotation::class$;
1290 jclass annoary = _Jv_GetArrayClass (anno, anno->getClassLoaderInternal());
1292 // FIXME: something should check the number of params versus the
1294 int n_params = read_u1 (bytes, last);
1295 jobjectArray result = _Jv_NewObjectArray (n_params, annoary, NULL);
1296 jobject *elts = elements (result);
1297 for (int i = 0; i < n_params; ++i)
1298 elts[i] = parseAnnotations(klass, pool, bytes, last);
1303 java::lang::Class::getMethodDefaultValue(::java::lang::reflect::Method *meth)
1305 // FIXME: could cache the value here...
1307 unsigned char *bytes = reflection_data;
1311 unsigned short meth_index = _Jv_FromReflectedMethod (meth) - methods;
1315 int type = read_u1 (bytes);
1316 if (type == JV_DONE_ATTR)
1318 int len = read_4 (bytes);
1319 unsigned char *next = bytes + len;
1320 if (type != JV_METHOD_ATTR)
1325 int kind = read_u1 (bytes, next);
1326 if (kind != JV_ANNOTATION_DEFAULT_KIND)
1331 int index = read_u2 (bytes, next);
1332 if (meth_index != index)
1338 // FIXME: could cache here. If we do then we have to clone any
1340 return parseAnnotationElement(this, &this->constants, bytes, next);
1345 java::lang::Class::getDeclaredAnnotations(jint /* jv_attr_type */ member_type,
1347 jint /* jv_attr_kind */ kind_req)
1349 using namespace java::lang::annotation;
1350 jobjectArray result;
1352 unsigned char *bytes = reflection_data;
1357 loader = (ClassLoader *)VMClassLoader::bootLoader;
1359 result = (loader->getDeclaredAnnotations
1360 (this, member_type, member_index, kind_req));
1366 int type = read_u1 (bytes);
1367 if (type == JV_DONE_ATTR)
1369 int len = read_4 (bytes);
1370 unsigned char *next = bytes + len;
1371 if (type != member_type)
1376 int kind = read_u1 (bytes, next);
1377 if (kind != kind_req)
1382 if (member_type != JV_CLASS_ATTR)
1384 int index = read_u2 (bytes, next);
1385 if (member_index != index)
1392 if (kind_req == JV_PARAMETER_ANNOTATIONS_KIND)
1393 result = ((parseParameterAnnotations
1394 (this, &this->constants, bytes, next)));
1396 result = ((parseAnnotations (this, &this->constants, bytes, next)));
1400 return (loader->putDeclaredAnnotations
1401 (this, member_type, member_index, kind_req, result));
1405 java::lang::Class::getDeclaredAnnotations(::java::lang::reflect::Method *meth,
1408 unsigned short meth_index = _Jv_FromReflectedMethod (meth) - methods;
1409 return getDeclaredAnnotations(JV_METHOD_ATTR, meth_index,
1411 ? JV_PARAMETER_ANNOTATIONS_KIND
1412 : JV_ANNOTATIONS_KIND));
1416 java::lang::Class::getDeclaredAnnotations(::java::lang::reflect::Constructor *cons,
1419 unsigned short meth_index = _Jv_FromReflectedConstructor (cons) - methods;
1420 return getDeclaredAnnotations(JV_METHOD_ATTR, meth_index,
1422 ? JV_PARAMETER_ANNOTATIONS_KIND
1423 : JV_ANNOTATIONS_KIND));
1427 java::lang::Class::getDeclaredAnnotations(::java::lang::reflect::Field *fld)
1429 unsigned short field_index = _Jv_FromReflectedField (fld) - fields;
1430 return getDeclaredAnnotations(JV_FIELD_ATTR, field_index,
1431 JV_ANNOTATIONS_KIND);
1434 JArray< ::java::lang::annotation::Annotation *> *
1435 java::lang::Class::getDeclaredAnnotationsInternal()
1437 return (JArray< ::java::lang::annotation::Annotation *> *) getDeclaredAnnotations(JV_CLASS_ATTR, 0, JV_ANNOTATIONS_KIND);
1441 resolve_class_constant (jclass klass, _Jv_Constants *pool, int cpool_index)
1443 check_constant (pool, cpool_index, JV_CONSTANT_Class);
1444 // FIXME: what is the correct thing to do with an exception here?
1445 return _Jv_Linker::resolve_pool_entry (klass, cpool_index, false).clazz;
1449 java::lang::Class::findInnerClassAttribute()
1451 unsigned char *bytes = reflection_data;
1456 int type = read_u1 (bytes);
1457 if (type == JV_DONE_ATTR)
1459 // After the type but before the length.
1460 unsigned char *save = bytes;
1461 int len = read_4 (bytes);
1462 unsigned char *next = bytes + len;
1463 if (type != JV_CLASS_ATTR)
1468 int kind = read_u1 (bytes, next);
1469 if (kind != JV_INNER_CLASSES_KIND)
1474 return save - reflection_data;
1480 java::lang::Class::findDeclaredClasses(JArray<jclass> *result,
1481 jboolean publicOnly,
1484 unsigned char *bytes = reflection_data + offset;
1485 int len = read_4 (bytes);
1486 unsigned char *next = bytes + len;
1488 read_u1 (bytes, next);
1489 int n_classes = read_u2 (bytes, next);
1491 for (int i = 0; i < n_classes; ++i)
1493 int inner_class_index = read_u2 (bytes, next);
1494 int outer_class_index = read_u2 (bytes, next);
1495 /*int inner_name_index = */ read_u2 (bytes, next);
1496 int inner_flags = read_u2 (bytes, next);
1498 if (inner_class_index == 0 || outer_class_index == 0)
1500 if (resolve_class_constant (this, &constants, outer_class_index) == this)
1502 jclass inner = resolve_class_constant (this, &constants,
1506 & java::lang::reflect::Modifier::PUBLIC) != 0))
1510 jclass *elts = elements (result);
1511 elts[count] = inner;
1522 java::lang::Class::getDeclaredClasses (jboolean publicOnly)
1524 int offset = findInnerClassAttribute();
1528 // No InnerClasses attribute, so no declared classes.
1532 count = findDeclaredClasses(NULL, publicOnly, offset);
1533 JArray<jclass> *result
1534 = (JArray<jclass> *) JvNewObjectArray (count, &java::lang::Class::class$,
1537 findDeclaredClasses(result, publicOnly, offset);
1542 java::lang::Class::getDeclaringClass (void)
1544 int offset = findInnerClassAttribute();
1548 unsigned char *bytes = reflection_data + offset;
1549 int len = read_4 (bytes);
1550 unsigned char *next = bytes + len;
1552 read_u1 (bytes, next);
1553 int n_classes = read_u2 (bytes, next);
1554 for (int i = 0; i < n_classes; ++i)
1556 int inner_class_index = read_u2 (bytes, next);
1557 int outer_class_index = read_u2 (bytes, next);
1558 /*int inner_name_index = */read_u2 (bytes, next);
1559 /*int inner_flags = */read_u2 (bytes, next);
1561 if (inner_class_index == 0 || outer_class_index == 0)
1563 if (resolve_class_constant (this, &constants, inner_class_index) == this)
1564 return resolve_class_constant (this, &constants, outer_class_index);
1571 java::lang::Class::isAnonymousClass()
1573 int offset = findInnerClassAttribute();
1577 unsigned char *bytes = reflection_data + offset;
1578 int len = read_4 (bytes);
1579 unsigned char *next = bytes + len;
1581 read_u1 (bytes, next);
1582 int n_classes = read_u2 (bytes, next);
1583 for (int i = 0; i < n_classes; ++i)
1585 int inner_class_index = read_u2 (bytes, next);
1586 /*int outer_class_index = */read_u2 (bytes, next);
1587 int inner_name_index = read_u2 (bytes, next);
1588 /*int inner_flags = */read_u2 (bytes, next);
1590 if (inner_class_index == 0)
1592 if (resolve_class_constant (this, &constants, inner_class_index) == this)
1593 return inner_name_index == 0;
1600 java::lang::Class::isLocalClass()
1603 indexes.i = getEnclosingMethodData();
1604 return indexes.i != 0;
1608 java::lang::Class::isMemberClass()
1610 // FIXME: is this correct?
1611 return !isLocalClass() && getDeclaringClass() != NULL;
1617 // Some class-related convenience functions.
1620 // Find a method declared in the class. If it is not declared locally
1621 // (or if it is inherited), return NULL.
1623 _Jv_GetMethodLocal (jclass klass, _Jv_Utf8Const *name,
1624 _Jv_Utf8Const *signature)
1626 for (int i = 0; i < klass->method_count; ++i)
1628 if (_Jv_equalUtf8Consts (name, klass->methods[i].name)
1629 && _Jv_equalUtf8Consts (signature, klass->methods[i].signature))
1630 return &klass->methods[i];
1636 _Jv_LookupDeclaredMethod (jclass klass, _Jv_Utf8Const *name,
1637 _Jv_Utf8Const *signature,
1638 jclass *declarer_result)
1640 for (; klass; klass = klass->getSuperclass())
1642 _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature);
1646 if (declarer_result)
1647 *declarer_result = klass;
1655 java::lang::reflect::Method *
1656 _Jv_GetReflectedMethod (jclass klass, _Jv_Utf8Const *name,
1657 _Jv_Utf8Const *signature)
1659 for (; klass; klass = klass->getSuperclass())
1661 _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature);
1664 using namespace java::lang::reflect;
1665 Method *rmethod = new Method ();
1666 rmethod->offset = (char*) meth - (char*) klass->methods;
1667 rmethod->declaringClass = klass;
1677 // NOTE: MCACHE_SIZE should be a power of 2 minus one.
1678 #define MCACHE_SIZE 31
1686 static __thread _Jv_mcache *method_cache;
1690 _Jv_FindMethodInCache (jclass klass MAYBE_UNUSED,
1691 _Jv_Utf8Const *name MAYBE_UNUSED,
1692 _Jv_Utf8Const *signature MAYBE_UNUSED)
1695 _Jv_mcache *cache = method_cache;
1698 int index = name->hash16 () & MCACHE_SIZE;
1699 _Jv_mcache *mc = &cache[index];
1700 _Jv_Method *m = mc->method;
1702 if (mc->klass == klass
1703 && _Jv_equalUtf8Consts (m->name, name)
1704 && _Jv_equalUtf8Consts (m->signature, signature))
1705 return mc->method->ncode;
1712 _Jv_AddMethodToCache (jclass klass MAYBE_UNUSED,
1713 _Jv_Method *method MAYBE_UNUSED)
1716 if (method_cache == NULL)
1717 method_cache = (_Jv_mcache *) _Jv_MallocUnchecked((MCACHE_SIZE + 1)
1718 * sizeof (_Jv_mcache));
1719 // If the allocation failed, just keep going.
1720 if (method_cache != NULL)
1722 int index = method->name->hash16 () & MCACHE_SIZE;
1723 method_cache[index].method = method;
1724 method_cache[index].klass = klass;
1729 // Free this thread's method cache. We explicitly manage this memory
1730 // as the GC does not yet know how to scan TLS on all platforms.
1732 _Jv_FreeMethodCache ()
1735 if (method_cache != NULL)
1737 _Jv_Free(method_cache);
1738 method_cache = NULL;
1744 _Jv_LookupInterfaceMethod (jclass klass, _Jv_Utf8Const *name,
1745 _Jv_Utf8Const *signature)
1747 using namespace java::lang::reflect;
1749 void *ncode = _Jv_FindMethodInCache (klass, name, signature);
1753 for (; klass; klass = klass->getSuperclass())
1755 _Jv_Method *meth = _Jv_GetMethodLocal (klass, name, signature);
1759 if (Modifier::isStatic(meth->accflags))
1760 throw new java::lang::IncompatibleClassChangeError
1761 (_Jv_GetMethodString (klass, meth));
1762 if (Modifier::isAbstract(meth->accflags))
1763 throw new java::lang::AbstractMethodError
1764 (_Jv_GetMethodString (klass, meth));
1765 if (! Modifier::isPublic(meth->accflags))
1766 throw new java::lang::IllegalAccessError
1767 (_Jv_GetMethodString (klass, meth));
1769 _Jv_AddMethodToCache (klass, meth);
1773 throw new java::lang::IncompatibleClassChangeError;
1776 // Fast interface method lookup by index.
1778 _Jv_LookupInterfaceMethodIdx (jclass klass, jclass iface, int method_idx)
1780 _Jv_IDispatchTable *cldt = klass->idt;
1781 int idx = iface->ioffsets[cldt->iindex] + method_idx;
1782 return cldt->itable[idx];
1786 _Jv_IsAssignableFrom (jclass source, jclass target)
1788 if (source == target)
1791 // If target is array, so must source be.
1792 while (target->isArray ())
1794 if (! source->isArray())
1796 target = target->getComponentType();
1797 source = source->getComponentType();
1800 if (target->isInterface())
1802 // Abstract classes have no IDT, and IDTs provide no way to check
1803 // two interfaces for assignability.
1804 if (__builtin_expect
1805 (source->idt == NULL || source->isInterface(), false))
1806 return _Jv_InterfaceAssignableFrom (source, target);
1808 _Jv_IDispatchTable *cl_idt = source->idt;
1810 if (__builtin_expect ((target->ioffsets == NULL), false))
1811 return false; // No class implementing TARGET has been loaded.
1812 jshort cl_iindex = cl_idt->iindex;
1813 if (cl_iindex < target->ioffsets[0])
1815 jshort offset = target->ioffsets[cl_iindex];
1816 if (offset != -1 && offset < cl_idt->itable_length
1817 && cl_idt->itable[offset] == target)
1823 // Primitive TYPE classes are only assignable to themselves.
1824 if (__builtin_expect (target->isPrimitive() || source->isPrimitive(), false))
1827 if (target == &java::lang::Object::class$)
1829 else if (source->ancestors == NULL || target->ancestors == NULL)
1831 // We need this case when either SOURCE or TARGET has not has
1832 // its constant-time tables prepared.
1834 // At this point we know that TARGET can't be Object, so it is
1835 // safe to use that as the termination point.
1836 while (source && source != &java::lang::Object::class$)
1838 if (source == target)
1840 source = source->getSuperclass();
1843 else if (source->depth >= target->depth
1844 && source->ancestors[source->depth - target->depth] == target)
1850 // Interface type checking, the slow way. Returns TRUE if IFACE is a
1851 // superinterface of SOURCE. This is used when SOURCE is also an interface,
1852 // or a class with no interface dispatch table.
1854 _Jv_InterfaceAssignableFrom (jclass source, jclass iface)
1856 for (int i = 0; i < source->interface_count; i++)
1858 jclass interface = source->interfaces[i];
1859 if (iface == interface
1860 || _Jv_InterfaceAssignableFrom (interface, iface))
1864 if (!source->isInterface()
1865 && source->superclass
1866 && _Jv_InterfaceAssignableFrom (source->superclass, iface))
1873 _Jv_IsInstanceOf(jobject obj, jclass cl)
1875 if (__builtin_expect (!obj, false))
1877 return _Jv_IsAssignableFrom (JV_CLASS (obj), cl);
1881 _Jv_CheckCast (jclass c, jobject obj)
1883 if (__builtin_expect
1884 (obj != NULL && ! _Jv_IsAssignableFrom(JV_CLASS (obj), c), false))
1885 throw new java::lang::ClassCastException
1886 ((new java::lang::StringBuffer
1887 (obj->getClass()->getName()))->append
1888 (JvNewStringUTF(" cannot be cast to "))->append
1889 (c->getName())->toString());
1895 _Jv_CheckArrayStore (jobject arr, jobject obj)
1899 JvAssert (arr != NULL);
1900 jclass elt_class = (JV_CLASS (arr))->getComponentType();
1901 if (elt_class == &java::lang::Object::class$)
1903 jclass obj_class = JV_CLASS (obj);
1904 if (__builtin_expect
1905 (! _Jv_IsAssignableFrom (obj_class, elt_class), false))
1906 throw new java::lang::ArrayStoreException
1907 ((new java::lang::StringBuffer
1908 (JvNewStringUTF("Cannot store ")))->append
1909 (obj_class->getName())->append
1910 (JvNewStringUTF(" in array of type "))->append
1911 (elt_class->getName())->toString());
1916 _Jv_IsAssignableFromSlow (jclass source, jclass target)
1918 // First, strip arrays.
1919 while (target->isArray ())
1921 // If target is array, source must be as well.
1922 if (! source->isArray ())
1924 target = target->getComponentType ();
1925 source = source->getComponentType ();
1929 if (target == &java::lang::Object::class$)
1932 // Ensure that the classes have their supers installed.
1933 _Jv_Linker::wait_for_state (source, JV_STATE_LOADING);
1934 _Jv_Linker::wait_for_state (target, JV_STATE_LOADING);
1938 if (source == target)
1941 if (target->isPrimitive () || source->isPrimitive ())
1944 if (target->isInterface ())
1946 for (int i = 0; i < source->interface_count; ++i)
1948 // We use a recursive call because we also need to
1949 // check superinterfaces.
1950 if (_Jv_IsAssignableFromSlow (source->getInterface (i), target))
1954 source = source->getSuperclass ();
1956 while (source != NULL);
1961 // Lookup an interface method by name. This is very similar to
1962 // purpose to _getMethod, but the interfaces are quite different. It
1963 // might be a good idea for _getMethod to call this function.
1965 // Return true of the method is found, with the class in FOUND_CLASS
1966 // and the index in INDEX.
1968 _Jv_getInterfaceMethod (jclass search_class, jclass &found_class, int &index,
1969 const _Jv_Utf8Const *utf_name,
1970 const _Jv_Utf8Const *utf_sig)
1972 for (jclass klass = search_class; klass; klass = klass->getSuperclass())
1974 // FIXME: Throw an exception?
1975 if (!klass->isInterface ())
1978 int max = klass->method_count;
1980 for (int i = 0; i < max; ++i)
1982 // Skip <clinit> here, as it will not be in the IDT.
1983 if (klass->methods[i].name->first() == '<')
1986 if (_Jv_equalUtf8Consts (klass->methods[i].name, utf_name)
1987 && _Jv_equalUtf8Consts (klass->methods[i].signature, utf_sig))
1990 using namespace java::lang::reflect;
1992 // FIXME: Method must be public. Throw an exception?
1993 if (! Modifier::isPublic (klass->methods[i].accflags))
1996 found_class = klass;
1997 // Interface method indexes count from 1.
2006 // If we haven't found a match, and this class is an interface, then
2007 // check all the superinterfaces.
2008 if (search_class->isInterface())
2010 for (int i = 0; i < search_class->interface_count; ++i)
2012 using namespace java::lang::reflect;
2013 bool found = _Jv_getInterfaceMethod (search_class->interfaces[i],
2026 _Jv_FindInterpreterMethod (jclass klass, jmethodID desired_method)
2028 using namespace java::lang::reflect;
2030 _Jv_InterpClass *iclass
2031 = reinterpret_cast<_Jv_InterpClass *> (klass->aux_info);
2032 _Jv_MethodBase **imethods = _Jv_GetFirstMethod (iclass);
2034 for (int i = 0; i < JvNumMethods (klass); ++i)
2036 _Jv_MethodBase *imeth = imethods[i];
2037 if (imeth->get_method () == desired_method)
2045 // Return Utf8 name of a class. This function is here for code that
2046 // can't access klass->name directly.
2048 _Jv_GetClassNameUtf8 (jclass klass)
2054 _Jv_GetMethodDeclaringClass (jmethodID method)
2056 _Jv_StackTrace::UpdateNCodeMap ();
2057 jobject obj = reinterpret_cast<jobject> (method->ncode);
2058 return reinterpret_cast<jclass> (_Jv_StackTrace::ncodeMap->get (obj));
2062 _Jv_GetClassState (jclass klass)
2064 return klass->state;
2068 _Jv_GetInterpClassSourceFile (jclass klass)
2070 if (_Jv_IsInterpretedClass (klass))
2072 _Jv_InterpClass *iclass =
2073 reinterpret_cast<_Jv_InterpClass *> (klass->aux_info);
2074 return iclass->source_file_name;