1 /* nat/VMClass.c - java/lang/Class
3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
5 M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
6 P. Tomsich, J. Wenninger
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Roman Obermaiser
29 Changes: Joseph Wenninger
31 $Id: VMClass.c 1173 2004-06-16 14:56:18Z jowenn $
44 #include "toolbox/logging.h"
45 #include "toolbox/memory.h"
46 #include "java_lang_Object.h"
47 #include "java_lang_Class.h"
48 #include "java_lang_ClassLoader.h"
49 #include "java_security_ProtectionDomain.h"
50 #include "java_lang_reflect_Constructor.h"
51 #include "java_lang_reflect_Field.h"
52 #include "java_lang_reflect_Method.h"
53 #include "java_lang_Throwable.h" /* needed for java_lang_VMClass.h */
54 #include "java_lang_VMClass.h"
57 /* for selecting public members */
58 #define MEMBER_PUBLIC 0
62 * Class: java_lang_VMClass
64 * Signature: (Ljava/lang/String;)Ljava/lang/Class;
66 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_forName(JNIEnv *env, jclass clazz, java_lang_String *s)
71 /* illegal argument */
75 /* create utf string in which '.' is replaced by '/' */
76 u = javastring_toutf(s, true);
78 /* create a new class, ... */
84 /* class was not loaded. raise exception */
86 /* there is already an exception (NoClassDefFoundError), but forName()
87 returns a ClassNotFoundException */
89 /* clear exceptionptr, because builtin_new checks for
90 ExceptionInInitializerError */
94 new_exception_javastring(string_java_lang_ClassNotFoundException, s);
102 /* ...and initialize it */
105 use_class_as_object(c);
107 return (java_lang_Class *) c;
112 * Class: java_lang_VMClass
113 * Method: getClassLoader
114 * Signature: ()Ljava/lang/ClassLoader;
116 JNIEXPORT java_lang_ClassLoader* JNICALL Java_java_lang_VMClass_getClassLoader(JNIEnv *env, jclass clazz, java_lang_Class *that)
118 return ((classinfo*)that)->classloader;
119 /* init_systemclassloader();
121 return SystemClassLoader;*/
126 * Class: java_lang_VMClass
127 * Method: getComponentType
128 * Signature: ()Ljava/lang/Class;
130 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getComponentType(JNIEnv *env, jclass clazz,java_lang_Class *that)
132 classinfo *thisclass = (classinfo *) that;
134 arraydescriptor *desc;
136 if ((desc = thisclass->vftbl->arraydesc) != NULL) {
137 if (desc->arraytype == ARRAYTYPE_OBJECT)
138 c = desc->componentvftbl->class;
140 c = primitivetype_table[desc->arraytype].class_primitive;
143 use_class_as_object(c);
146 return (java_lang_Class *) c;
151 * Class: java_lang_VMClass
152 * Method: getDeclaredConstructors
153 * Signature: (Z)[Ljava/lang/reflect/Constructor;
155 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredConstructors(JNIEnv *env, jclass clazz,
156 struct java_lang_Class *that, s4 public_only)
159 classinfo *c = (classinfo *) that;
160 java_objectheader *o;
161 classinfo *class_constructor;
162 java_objectarray *array_constructor; /* result: array of Method-objects */
163 java_objectarray *exceptiontypes; /* the exceptions thrown by the method */
164 methodinfo *m; /* the current method to be represented */
165 int public_methods = 0; /* number of public methods of the class */
168 utf *utf_constr = utf_new_char("<init>");
170 /* determine number of constructors */
171 for (i = 0; i < c->methodscount; i++)
172 if (((c->methods[i].flags & ACC_PUBLIC) || !public_only) &&
173 (c->methods[i].name == utf_constr))
176 class_constructor = class_new(utf_new_char("java/lang/reflect/Constructor"));
178 if (!class_constructor->loaded)
179 class_load(class_constructor);
181 if (!class_constructor->linked)
182 class_link(class_constructor);
184 array_constructor = builtin_anewarray(public_methods, class_constructor);
186 if (!array_constructor)
189 for (i = 0; i < c->methodscount; i++)
190 if ((c->methods[i].flags & ACC_PUBLIC) || !public_only){
192 if (m->name!=utf_constr)
195 o = native_new_and_init(class_constructor);
196 array_constructor->data[pos++] = o;
198 /* array of exceptions declared to be thrown, information not available !! */
199 exceptiontypes = builtin_anewarray(0, class_java_lang_Class);
201 /* class_showconstantpool(class_constructor);*/
202 /* initialize instance fields */
203 /* ((java_lang_reflect_Constructor*)o)->flag=(m->flags & (ACC_PRIVATE | ACC_PUBLIC | ACC_PROTECTED));*/
204 setfield_critical(class_constructor,o,"clazz", "Ljava/lang/Class;", jobject, (jobject) c /*this*/);
205 setfield_critical(class_constructor,o,"slot", "I", jint, i);
206 /* setfield_critical(class_constructor,o,"flag", "I", jint, (m->flags & (ACC_PRIVATE |
207 ACC_PUBLIC | ACC_PROTECTED))); */
208 setfield_critical(class_constructor,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes);
209 setfield_critical(class_constructor,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) get_parametertypes(m));
212 return array_constructor;
217 * Class: java_lang_VMClass
218 * Method: getDeclaredClasses
219 * Signature: (Z)[Ljava/lang/Class;
221 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredClasses(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 publicOnly)
223 #if defined(__GNUC__)
224 #warning fix the public only case
226 classinfo *c = (classinfo *) that;
227 int pos = 0; /* current declared class */
228 int declaredclasscount = 0; /* number of declared classes */
229 java_objectarray *result; /* array of declared classes */
230 int notPublicOnly = !publicOnly;
236 /*printf("PublicOnly: %d\n",publicOnly);*/
237 if (!Java_java_lang_VMClass_isPrimitive(env, clazz, (java_lang_Class *) c) && (c->name->text[0] != '[')) {
238 /* determine number of declared classes */
239 for (i = 0; i < c->innerclasscount; i++) {
240 if ( (c->innerclass[i].outer_class == c) && (notPublicOnly || (c->innerclass[i].flags & ACC_PUBLIC)))
241 /* outer class is this class */
242 declaredclasscount++;
246 /*class_showmethods(c); */
248 result = builtin_anewarray(declaredclasscount, class_java_lang_Class);
250 for (i = 0; i < c->innerclasscount; i++) {
251 classinfo *inner = c->innerclass[i].inner_class;
252 classinfo *outer = c->innerclass[i].outer_class;
254 if ((outer == c) && (notPublicOnly || (inner->flags & ACC_PUBLIC))) {
255 /* outer class is this class, store innerclass in array */
256 use_class_as_object(inner);
257 result->data[pos++] = (java_objectheader *) inner;
266 * Class: java/lang/Class
267 * Method: getDeclaringClass
268 * Signature: ()Ljava/lang/Class;
270 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getDeclaringClass(JNIEnv *env, jclass clazz, struct java_lang_Class *that)
272 #if defined(__GNUC__)
275 classinfo *c = (classinfo *) that;
277 if (that && !Java_java_lang_VMClass_isPrimitive(env, clazz,that) && (c->name->text[0] != '[')) {
280 if (c->innerclasscount == 0) /* no innerclasses exist */
283 for (i = 0; i < c->innerclasscount; i++) {
284 classinfo *inner = c->innerclass[i].inner_class;
285 classinfo *outer = c->innerclass[i].outer_class;
288 /* innerclass is this class */
289 use_class_as_object(outer);
290 return (java_lang_Class *) outer;
295 /* return NULL for arrayclasses and primitive classes */
300 java_lang_reflect_Field* cacao_getField0(JNIEnv *env, java_lang_Class *that, java_lang_String *name, s4 public_only)
303 classinfo *fieldtype;
304 fieldinfo *f; /* the field to be represented */
305 java_lang_reflect_Field *o; /* result: field-object */
306 utf *desc; /* the fielddescriptor */
309 /* create Field object */
310 /* c = (classinfo *) loader_load(utf_new_char("java/lang/reflect/Field")); */
311 c = class_new(utf_new_char("java/lang/reflect/Field"));
312 o = (java_lang_reflect_Field *) native_new_and_init(c);
314 /* get fieldinfo entry */
315 idx = class_findfield_index_approx((classinfo *) that, javastring_toutf(name, false));
318 *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
322 f = &(((classinfo *) that)->fields[idx]);
324 if (public_only && !(f->flags & ACC_PUBLIC)) {
325 /* field is not public and public only had been requested*/
326 *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
330 desc = f->descriptor;
331 fieldtype = class_from_descriptor(desc->text, utf_end(desc), NULL, CLASSLOAD_LOAD);
335 /* initialize instance fields */
336 setfield_critical(c,o,"declaringClass", "Ljava/lang/Class;", jobject, (jobject) that /*this*/);
337 /* ((java_lang_reflect_Field*)(o))->flag=f->flags;*/
338 /* save type in slot-field for faster processing */
339 /* setfield_critical(c,o,"flag", "I", jint, (jint) f->flags); */
340 setfield_critical(c,o,"slot", "I", jint, (jint) idx);
341 setfield_critical(c,o,"name", "Ljava/lang/String;", jstring, (jstring) name);
342 /*setfield_critical(c,o,"type", "Ljava/lang/Class;", jclass, fieldtype);*/
352 * Class: java_lang_VMClass
353 * Method: getDeclaredFields
354 * Signature: (Z)[Ljava/lang/reflect/Field;
356 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredFields(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 public_only)
358 classinfo *c = (classinfo *) that;
359 classinfo *class_field;
360 java_objectarray *array_field; /* result: array of field-objects */
361 int public_fields = 0; /* number of elements in field-array */
365 /* determine number of fields */
366 for (i = 0; i < c->fieldscount; i++)
367 if ((c->fields[i].flags & ACC_PUBLIC) || (!public_only))
370 /* class_field = loader_load(utf_new_char("java/lang/reflect/Field")); */
371 class_field = class_new(utf_new_char("java/lang/reflect/Field"));
376 /* create array of fields */
377 array_field = builtin_anewarray(public_fields, class_field);
379 /* creation of array failed */
383 /* get the fields and store in the array */
384 for (i = 0; i < c->fieldscount; i++)
385 if ( (c->fields[i].flags & ACC_PUBLIC) || (!public_only))
386 array_field->data[pos++] =
387 (java_objectheader *) cacao_getField0(env,
388 that, (java_lang_String *) javastring_new(c->fields[i].name),public_only);
394 * Class: java/lang/Class
395 * Method: getInterfaces
396 * Signature: ()[Ljava/lang/Class;
398 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getInterfaces(JNIEnv *env, jclass clazz, java_lang_Class *that)
400 classinfo *c = (classinfo *) that;
404 a = builtin_anewarray(c->interfacescount, class_java_lang_Class);
409 for (i = 0; i < c->interfacescount; i++) {
410 use_class_as_object(c->interfaces[i]);
412 a->data[i] = (java_objectheader *) c->interfaces[i];
419 java_lang_reflect_Method* cacao_getMethod0(JNIEnv *env, java_lang_Class *that, java_lang_String *name, java_objectarray *types, s4 which)
422 classinfo *clazz = (classinfo *) that;
423 java_lang_reflect_Method* o; /* result: Method-object */
424 java_objectarray *exceptiontypes; /* the exceptions thrown by the method */
425 methodinfo *m; /* the method to be represented */
427 /* c = (classinfo *) loader_load(utf_new_char("java/lang/reflect/Method")); */
428 c = class_new(utf_new_char("java/lang/reflect/Method"));
429 o = (java_lang_reflect_Method *) native_new_and_init(c);
431 /* find the method */
432 m = class_resolvemethod_approx(clazz,
433 javastring_toutf(name, false),
434 create_methodsig(types,0)
437 if (!m || (which == MEMBER_PUBLIC && !(m->flags & ACC_PUBLIC))) {
438 /* no apropriate method was found */
439 *exceptionptr = new_exception(string_java_lang_NoSuchMethodException);
443 /* array of exceptions declared to be thrown, information not available !! */
444 exceptiontypes = builtin_anewarray(0, class_java_lang_Class);
446 /* initialize instance fields */
447 setfield_critical(c,o,"clazz", "Ljava/lang/Class;", jobject, (jobject) clazz /*this*/);
448 setfield_critical(c,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) types);
449 setfield_critical(c,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes);
450 setfield_critical(c,o,"name", "Ljava/lang/String;", jstring, javastring_new(m->name));
451 setfield_critical(c,o,"modifiers", "I", jint, m->flags);
452 setfield_critical(c,o,"slot", "I", jint, 0);
453 setfield_critical(c,o,"returnType", "Ljava/lang/Class;", jclass, get_returntype(m));
460 * Class: java_lang_VMClass
461 * Method: getDeclaredMethods
462 * Signature: (Z)[Ljava/lang/reflect/Method;
464 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredMethods(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 public_only)
466 classinfo *c = (classinfo *) that;
467 java_objectheader *o;
468 classinfo *class_method;
469 java_objectarray *array_method; /* result: array of Method-objects */
470 java_objectarray *exceptiontypes; /* the exceptions thrown by the method */
471 methodinfo *m; /* the current method to be represented */
472 int public_methods = 0; /* number of public methods of the class */
475 utf *utf_constr=utf_new_char("<init>");
476 utf *utf_clinit=utf_new_char("<clinit>");
478 /* class_method = (classinfo*) loader_load(utf_new_char ("java/lang/reflect/Method")); */
479 class_method = class_new(utf_new_char("java/lang/reflect/Method"));
484 /* JOWENN: array classes do not declare methods according to mauve test. It should be considered, if
485 we should return to my old clone method overriding instead of declaring it as a member function */
486 if (Java_java_lang_VMClass_isArray(env, clazz,that)) {
487 return builtin_anewarray(0, class_method);
491 /* determine number of methods */
492 for (i = 0; i < c->methodscount; i++)
493 if ((((c->methods[i].flags & ACC_PUBLIC)) || (!public_only)) &&
495 ((c->methods[i].name==utf_constr) ||
496 (c->methods[i].name==utf_clinit) )
500 class_showmethods(class_method);
505 array_method = builtin_anewarray(public_methods, class_method);
510 for (i = 0; i < c->methodscount; i++)
511 if (((c->methods[i].flags & ACC_PUBLIC) || (!public_only)) &&
513 ((c->methods[i].name==utf_constr) ||
514 (c->methods[i].name==utf_clinit) )
518 o = native_new_and_init(class_method);
519 array_method->data[pos++] = o;
521 /* array of exceptions declared to be thrown, information not available !! */
522 exceptiontypes = builtin_anewarray (0, class_java_lang_Class);
525 /* initialize instance fields */
526 /* ((java_lang_reflect_Method*)o)->flag=(m->flags &
527 (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED | ACC_ABSTRACT | ACC_STATIC | ACC_FINAL |
528 ACC_SYNCHRONIZED | ACC_NATIVE | ACC_STRICT)
530 setfield_critical(class_method,o,"declaringClass", "Ljava/lang/Class;", jobject, (jobject) c /*this*/);
531 setfield_critical(class_method,o,"name", "Ljava/lang/String;", jstring, javastring_new(m->name));
532 /* setfield_critical(class_method,o,"flag", "I", jint, (m->flags &
533 (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED | ACC_ABSTRACT | ACC_STATIC | ACC_FINAL |
534 ACC_SYNCHRONIZED | ACC_NATIVE | ACC_STRICT)));*/
535 setfield_critical(class_method,o,"slot", "I", jint, i);
536 /* setfield_critical(class_method,o,"returnType", "Ljava/lang/Class;", jclass, get_returntype(m));
537 setfield_critical(class_method,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes);
538 setfield_critical(class_method,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) get_parametertypes(m));*/
546 * Class: java/lang/Class
547 * Method: getModifiers
550 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_getModifiers(JNIEnv *env, jclass clazz, java_lang_Class *that)
552 classinfo *c = (classinfo *) that;
558 * Class: java/lang/Class
560 * Signature: ()Ljava/lang/String;
562 JNIEXPORT java_lang_String* JNICALL Java_java_lang_VMClass_getName(JNIEnv *env, jclass clazz, java_lang_Class* that)
565 classinfo *c = (classinfo *) that;
566 java_lang_String *s = (java_lang_String *) javastring_new(c->name);
571 /* return string where '/' is replaced by '.' */
572 for (i = 0; i < s->value->header.size; i++) {
573 if (s->value->data[i] == '/')
574 s->value->data[i] = '.';
583 * Class: java/lang/VMClass
584 * Method: getBeautifiedName
585 * Signature: (Ljava/lang/Class;)Ljava/lang/String;
587 JNIEXPORT java_lang_String* JNICALL Java_java_lang_VMClass_getBeautifiedName(JNIEnv *env, jclass clazz, java_lang_Class *par1)
590 classinfo *c = (classinfo *) (par1);
592 char *utf__ptr = c->name->text; /* current position in utf-text */
593 char **utf_ptr = &utf__ptr;
594 char *desc_end = utf_end(c->name); /* points behind utf string */
601 log_text("Java_java_lang_VMClass_getBeautifiedName");
602 utf_display(c->name);
603 log_text("beautifying");
606 while ( *utf_ptr != desc_end ) {
607 if (utf_nextu2(utf_ptr)=='[') dimCnt++;
610 utf__ptr = (*utf_ptr) - 1;
616 utf_display(c->name);
620 if (((*utf_ptr) + 1) == desc_end) {
621 for (i = 0; i < PRIMITIVETYPE_COUNT; i++) {
622 if (primitivetype_table[i].typesig == (*utf__ptr)) {
623 len = dimCnt * 2 + strlen(primitivetype_table[i].name);
624 str = MNEW(char, len + 1);
625 strcpy(str, primitivetype_table[i].name);
633 len = dimCnt + strlen(c->name->text) - 2;
634 str = MNEW(char, len + 1);
635 strncpy(str, ++utf__ptr, len - 2 * dimCnt);
637 len = strlen(c->name->text);
638 str = MNEW(char, len + 1);
639 strncpy(str, utf__ptr, len);
644 dimCnt = len - 2 * dimCnt;
646 for (i = len - 1; i >= dimCnt; i = i - 2) {
651 s = javastring_new(utf_new_char(str));
652 MFREE(str, char, len + 1);
656 /* return string where '/' is replaced by '.' */
657 for (i = 0; i < s->value->header.size; i++) {
658 if (s->value->data[i] == '/') s->value->data[i] = '.';
667 * Class: java/lang/Class
668 * Method: getSuperclass
669 * Signature: ()Ljava/lang/Class;
671 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getSuperclass(JNIEnv *env, jclass clazz, java_lang_Class *that)
673 classinfo *cl = (classinfo *) that;
674 classinfo *c = cl->super;
679 use_class_as_object (c);
681 return (java_lang_Class *) c;
686 * Class: java/lang/Class
690 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isArray(JNIEnv *env, jclass clazz, java_lang_Class *that)
692 classinfo *c = (classinfo *) that;
694 return c->vftbl->arraydesc != NULL;
699 * Class: java/lang/Class
700 * Method: isAssignableFrom
701 * Signature: (Ljava/lang/Class;)Z
703 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isAssignableFrom(JNIEnv *env, jclass clazz, java_lang_Class *that, java_lang_Class *sup)
705 /* log_text("Java_java_lang_VMClass_isAssignableFrom");*/
709 panic("sup->vmClass is NULL in VMClass.isAssignableFrom");
712 return (*env)->IsAssignableForm(env, (jclass) sup, (jclass) that);
717 * Class: java/lang/Class
719 * Signature: (Ljava/lang/Object;)Z
721 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isInstance(JNIEnv *env, jclass clazz, java_lang_Class *that, java_lang_Object *obj)
723 classinfo *clazz = (classinfo *) that;
725 return (*env)->IsInstanceOf(env, (jobject) obj, that);
730 * Class: java/lang/Class
731 * Method: isInterface
734 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isInterface(JNIEnv *env, jclass clazz, java_lang_Class *that)
736 classinfo *c = (classinfo *) that;
738 if (c->flags & ACC_INTERFACE)
746 * Class: java/lang/Class
747 * Method: isPrimitive
750 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isPrimitive(JNIEnv *env, jclass clazz, java_lang_Class *that)
753 classinfo *c = (classinfo *) that;
755 /* search table of primitive classes */
756 for (i = 0; i < PRIMITIVETYPE_COUNT; i++)
757 if (primitivetype_table[i].class_primitive == c)
767 * Class: java_lang_VMClass
771 JNIEXPORT void JNICALL Java_java_lang_VMClass_initialize(JNIEnv *env, jclass clazz, java_lang_Class *that)
773 log_text("Java_java_lang_VMClass_initialize");
778 * Class: java_lang_VMClass
779 * Method: loadArrayClass
780 * Signature: (Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/lang/Class;
782 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_loadArrayClass(JNIEnv *env, jclass clazz, java_lang_String *par1, java_lang_ClassLoader* par2)
784 log_text("Java_java_lang_VMClass_loadArrayClass");
791 * Class: java_lang_VMClass
792 * Method: throwException
793 * Signature: (Ljava/lang/Throwable;)V
795 JNIEXPORT void JNICALL Java_java_lang_VMClass_throwException(JNIEnv *env, jclass clazz, java_lang_Throwable *par1)
797 log_text("Won't implement VmClass.throwException. (Not needed according to spec) Is only needed to be bug compatible with the SUN VM. (according to gnuclasspath team)");
805 * These are local overrides for various environment variables in Emacs.
806 * Please do not remove this and leave it at the end of the file, where
807 * Emacs will automagically detect them.
808 * ---------------------------------------------------------------------
811 * indent-tabs-mode: t