/* nat/VMClass.c - java/lang/Class Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser, M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, J. Wenninger This file is part of CACAO. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Contact: cacao@complang.tuwien.ac.at Authors: Roman Obermaiser Changes: Joseph Wenninger $Id: VMClass.c 1201 2004-06-20 21:24:17Z twisti $ */ #include #include "jni.h" #include "types.h" #include "global.h" #include "builtin.h" #include "loader.h" #include "native.h" #include "tables.h" #include "toolbox/logging.h" #include "toolbox/memory.h" #include "java_lang_Object.h" #include "java_lang_Class.h" #include "java_lang_ClassLoader.h" #include "java_security_ProtectionDomain.h" #include "java_lang_reflect_Constructor.h" #include "java_lang_reflect_Field.h" #include "java_lang_reflect_Method.h" #include "java_lang_Throwable.h" /* needed for java_lang_VMClass.h */ #include "java_lang_VMClass.h" /* for selecting public members */ #define MEMBER_PUBLIC 0 /* * Class: java_lang_VMClass * Method: forName * Signature: (Ljava/lang/String;)Ljava/lang/Class; */ JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_forName(JNIEnv *env, jclass clazz, java_lang_String *s) { classinfo *c; utf *u; /* illegal argument */ if (!s) return NULL; /* create utf string in which '.' is replaced by '/' */ u = javastring_toutf(s, true); /* create a new class, ... */ c = class_new(u); /* load, ... */ if (!class_load(c)) { classinfo *xclass; xclass = (*exceptionptr)->vftbl->class; /* if the exception is a NoClassDefFoundError, we replace it with a ClassNotFoundException, otherwise return the exception */ if (xclass == class_get(utf_new_char(string_java_lang_NoClassDefFoundError))) { /* clear exceptionptr, because builtin_new checks for ExceptionInInitializerError */ *exceptionptr = NULL; *exceptionptr = new_exception_javastring(string_java_lang_ClassNotFoundException, s); } return NULL; } /* link, ... */ if (!class_link(c)) return NULL; /* ...and initialize it */ if (!class_init(c)) return NULL; use_class_as_object(c); return (java_lang_Class *) c; } /* * Class: java_lang_VMClass * Method: getClassLoader * Signature: ()Ljava/lang/ClassLoader; */ JNIEXPORT java_lang_ClassLoader* JNICALL Java_java_lang_VMClass_getClassLoader(JNIEnv *env, jclass clazz, java_lang_Class *that) { return ((classinfo*)that)->classloader; /* init_systemclassloader(); return SystemClassLoader;*/ } /* * Class: java_lang_VMClass * Method: getComponentType * Signature: ()Ljava/lang/Class; */ JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getComponentType(JNIEnv *env, jclass clazz,java_lang_Class *that) { classinfo *thisclass = (classinfo *) that; classinfo *c = NULL; arraydescriptor *desc; if ((desc = thisclass->vftbl->arraydesc) != NULL) { if (desc->arraytype == ARRAYTYPE_OBJECT) c = desc->componentvftbl->class; else c = primitivetype_table[desc->arraytype].class_primitive; /* set vftbl */ use_class_as_object(c); } return (java_lang_Class *) c; } /* * Class: java_lang_VMClass * Method: getDeclaredConstructors * Signature: (Z)[Ljava/lang/reflect/Constructor; */ JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredConstructors(JNIEnv *env, jclass clazz, struct java_lang_Class *that, s4 public_only) { classinfo *c = (classinfo *) that; java_objectheader *o; classinfo *class_constructor; java_objectarray *array_constructor; /* result: array of Method-objects */ java_objectarray *exceptiontypes; /* the exceptions thrown by the method */ methodinfo *m; /* the current method to be represented */ int public_methods = 0; /* number of public methods of the class */ int pos = 0; int i; utf *utf_constr = utf_new_char(""); /* determine number of constructors */ for (i = 0; i < c->methodscount; i++) if (((c->methods[i].flags & ACC_PUBLIC) || !public_only) && (c->methods[i].name == utf_constr)) public_methods++; class_constructor = class_new(utf_new_char("java/lang/reflect/Constructor")); if (!class_constructor->loaded) class_load(class_constructor); if (!class_constructor->linked) class_link(class_constructor); array_constructor = builtin_anewarray(public_methods, class_constructor); if (!array_constructor) return NULL; for (i = 0; i < c->methodscount; i++) if ((c->methods[i].flags & ACC_PUBLIC) || !public_only){ m = &c->methods[i]; if (m->name!=utf_constr) continue; o = native_new_and_init(class_constructor); array_constructor->data[pos++] = o; /* array of exceptions declared to be thrown, information not available !! */ exceptiontypes = builtin_anewarray(0, class_java_lang_Class); /* class_showconstantpool(class_constructor);*/ /* initialize instance fields */ /* ((java_lang_reflect_Constructor*)o)->flag=(m->flags & (ACC_PRIVATE | ACC_PUBLIC | ACC_PROTECTED));*/ setfield_critical(class_constructor,o,"clazz", "Ljava/lang/Class;", jobject, (jobject) c /*this*/); setfield_critical(class_constructor,o,"slot", "I", jint, i); /* setfield_critical(class_constructor,o,"flag", "I", jint, (m->flags & (ACC_PRIVATE | ACC_PUBLIC | ACC_PROTECTED))); */ setfield_critical(class_constructor,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes); setfield_critical(class_constructor,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) get_parametertypes(m)); } return array_constructor; } /* * Class: java_lang_VMClass * Method: getDeclaredClasses * Signature: (Z)[Ljava/lang/Class; */ JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredClasses(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 publicOnly) { #if defined(__GNUC__) #warning fix the public only case #endif classinfo *c = (classinfo *) that; int pos = 0; /* current declared class */ int declaredclasscount = 0; /* number of declared classes */ java_objectarray *result; /* array of declared classes */ int notPublicOnly = !publicOnly; int i; if (!that) return NULL; /*printf("PublicOnly: %d\n",publicOnly);*/ if (!Java_java_lang_VMClass_isPrimitive(env, clazz, (java_lang_Class *) c) && (c->name->text[0] != '[')) { /* determine number of declared classes */ for (i = 0; i < c->innerclasscount; i++) { if ( (c->innerclass[i].outer_class == c) && (notPublicOnly || (c->innerclass[i].flags & ACC_PUBLIC))) /* outer class is this class */ declaredclasscount++; } } /*class_showmethods(c); */ result = builtin_anewarray(declaredclasscount, class_java_lang_Class); for (i = 0; i < c->innerclasscount; i++) { classinfo *inner = c->innerclass[i].inner_class; classinfo *outer = c->innerclass[i].outer_class; if ((outer == c) && (notPublicOnly || (inner->flags & ACC_PUBLIC))) { /* outer class is this class, store innerclass in array */ use_class_as_object(inner); result->data[pos++] = (java_objectheader *) inner; } } return result; } /* * Class: java/lang/Class * Method: getDeclaringClass * Signature: ()Ljava/lang/Class; */ JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getDeclaringClass(JNIEnv *env, jclass clazz, struct java_lang_Class *that) { #if defined(__GNUC__) #warning fixme #endif classinfo *c = (classinfo *) that; if (that && !Java_java_lang_VMClass_isPrimitive(env, clazz,that) && (c->name->text[0] != '[')) { int i; if (c->innerclasscount == 0) /* no innerclasses exist */ return NULL; for (i = 0; i < c->innerclasscount; i++) { classinfo *inner = c->innerclass[i].inner_class; classinfo *outer = c->innerclass[i].outer_class; if (inner == c) { /* innerclass is this class */ use_class_as_object(outer); return (java_lang_Class *) outer; } } } /* return NULL for arrayclasses and primitive classes */ return NULL; } java_lang_reflect_Field* cacao_getField0(JNIEnv *env, java_lang_Class *that, java_lang_String *name, s4 public_only) { classinfo *c; classinfo *fieldtype; fieldinfo *f; /* the field to be represented */ java_lang_reflect_Field *o; /* result: field-object */ utf *desc; /* the fielddescriptor */ int idx; /* create Field object */ /* c = (classinfo *) loader_load(utf_new_char("java/lang/reflect/Field")); */ c = class_new(utf_new_char("java/lang/reflect/Field")); o = (java_lang_reflect_Field *) native_new_and_init(c); /* get fieldinfo entry */ idx = class_findfield_index_approx((classinfo *) that, javastring_toutf(name, false)); if (idx < 0) { *exceptionptr = new_exception(string_java_lang_NoSuchFieldException); return NULL; } f = &(((classinfo *) that)->fields[idx]); if (f) { if (public_only && !(f->flags & ACC_PUBLIC)) { /* field is not public and public only had been requested*/ *exceptionptr = new_exception(string_java_lang_NoSuchFieldException); return NULL; } desc = f->descriptor; fieldtype = class_from_descriptor(desc->text, utf_end(desc), NULL, CLASSLOAD_LOAD); if (!fieldtype) return NULL; /* initialize instance fields */ setfield_critical(c,o,"declaringClass", "Ljava/lang/Class;", jobject, (jobject) that /*this*/); /* ((java_lang_reflect_Field*)(o))->flag=f->flags;*/ /* save type in slot-field for faster processing */ /* setfield_critical(c,o,"flag", "I", jint, (jint) f->flags); */ setfield_critical(c,o,"slot", "I", jint, (jint) idx); setfield_critical(c,o,"name", "Ljava/lang/String;", jstring, (jstring) name); /*setfield_critical(c,o,"type", "Ljava/lang/Class;", jclass, fieldtype);*/ return o; } return NULL; } /* * Class: java_lang_VMClass * Method: getDeclaredFields * Signature: (Z)[Ljava/lang/reflect/Field; */ JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredFields(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 public_only) { classinfo *c = (classinfo *) that; classinfo *class_field; java_objectarray *array_field; /* result: array of field-objects */ int public_fields = 0; /* number of elements in field-array */ int pos = 0; int i; /* determine number of fields */ for (i = 0; i < c->fieldscount; i++) if ((c->fields[i].flags & ACC_PUBLIC) || (!public_only)) public_fields++; /* class_field = loader_load(utf_new_char("java/lang/reflect/Field")); */ class_field = class_new(utf_new_char("java/lang/reflect/Field")); if (!class_field) return NULL; /* create array of fields */ array_field = builtin_anewarray(public_fields, class_field); /* creation of array failed */ if (!array_field) return NULL; /* get the fields and store in the array */ for (i = 0; i < c->fieldscount; i++) if ( (c->fields[i].flags & ACC_PUBLIC) || (!public_only)) array_field->data[pos++] = (java_objectheader *) cacao_getField0(env, that, (java_lang_String *) javastring_new(c->fields[i].name),public_only); return array_field; } /* * Class: java/lang/Class * Method: getInterfaces * Signature: ()[Ljava/lang/Class; */ JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getInterfaces(JNIEnv *env, jclass clazz, java_lang_Class *that) { classinfo *c = (classinfo *) that; u4 i; java_objectarray *a; a = builtin_anewarray(c->interfacescount, class_java_lang_Class); if (!a) return NULL; for (i = 0; i < c->interfacescount; i++) { use_class_as_object(c->interfaces[i]); a->data[i] = (java_objectheader *) c->interfaces[i]; } return a; } java_lang_reflect_Method* cacao_getMethod0(JNIEnv *env, java_lang_Class *that, java_lang_String *name, java_objectarray *types, s4 which) { classinfo *c; classinfo *clazz = (classinfo *) that; java_lang_reflect_Method* o; /* result: Method-object */ java_objectarray *exceptiontypes; /* the exceptions thrown by the method */ methodinfo *m; /* the method to be represented */ /* c = (classinfo *) loader_load(utf_new_char("java/lang/reflect/Method")); */ c = class_new(utf_new_char("java/lang/reflect/Method")); o = (java_lang_reflect_Method *) native_new_and_init(c); /* find the method */ m = class_resolvemethod_approx(clazz, javastring_toutf(name, false), create_methodsig(types,0) ); if (!m || (which == MEMBER_PUBLIC && !(m->flags & ACC_PUBLIC))) { /* no apropriate method was found */ *exceptionptr = new_exception(string_java_lang_NoSuchMethodException); return NULL; } /* array of exceptions declared to be thrown, information not available !! */ exceptiontypes = builtin_anewarray(0, class_java_lang_Class); /* initialize instance fields */ setfield_critical(c,o,"clazz", "Ljava/lang/Class;", jobject, (jobject) clazz /*this*/); setfield_critical(c,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) types); setfield_critical(c,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes); setfield_critical(c,o,"name", "Ljava/lang/String;", jstring, javastring_new(m->name)); setfield_critical(c,o,"modifiers", "I", jint, m->flags); setfield_critical(c,o,"slot", "I", jint, 0); setfield_critical(c,o,"returnType", "Ljava/lang/Class;", jclass, get_returntype(m)); return o; } /* * Class: java_lang_VMClass * Method: getDeclaredMethods * Signature: (Z)[Ljava/lang/reflect/Method; */ JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredMethods(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 public_only) { classinfo *c = (classinfo *) that; java_objectheader *o; classinfo *class_method; java_objectarray *array_method; /* result: array of Method-objects */ java_objectarray *exceptiontypes; /* the exceptions thrown by the method */ methodinfo *m; /* the current method to be represented */ int public_methods = 0; /* number of public methods of the class */ int pos = 0; int i; utf *utf_constr=utf_new_char(""); utf *utf_clinit=utf_new_char(""); /* class_method = (classinfo*) loader_load(utf_new_char ("java/lang/reflect/Method")); */ class_method = class_new(utf_new_char("java/lang/reflect/Method")); if (!class_method) return NULL; /* JOWENN: array classes do not declare methods according to mauve test. It should be considered, if we should return to my old clone method overriding instead of declaring it as a member function */ if (Java_java_lang_VMClass_isArray(env, clazz,that)) { return builtin_anewarray(0, class_method); } /* determine number of methods */ for (i = 0; i < c->methodscount; i++) if ((((c->methods[i].flags & ACC_PUBLIC)) || (!public_only)) && (! ((c->methods[i].name==utf_constr) || (c->methods[i].name==utf_clinit) ) )) public_methods++; /* class_showmethods(class_method); panic("JOWENN"); */ array_method = builtin_anewarray(public_methods, class_method); if (!array_method) return NULL; for (i = 0; i < c->methodscount; i++) if (((c->methods[i].flags & ACC_PUBLIC) || (!public_only)) && (! ((c->methods[i].name==utf_constr) || (c->methods[i].name==utf_clinit) ) )) { m = &c->methods[i]; o = native_new_and_init(class_method); array_method->data[pos++] = o; /* array of exceptions declared to be thrown, information not available !! */ exceptiontypes = builtin_anewarray (0, class_java_lang_Class); /* initialize instance fields */ /* ((java_lang_reflect_Method*)o)->flag=(m->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED | ACC_ABSTRACT | ACC_STATIC | ACC_FINAL | ACC_SYNCHRONIZED | ACC_NATIVE | ACC_STRICT) );*/ setfield_critical(class_method,o,"declaringClass", "Ljava/lang/Class;", jobject, (jobject) c /*this*/); setfield_critical(class_method,o,"name", "Ljava/lang/String;", jstring, javastring_new(m->name)); /* setfield_critical(class_method,o,"flag", "I", jint, (m->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED | ACC_ABSTRACT | ACC_STATIC | ACC_FINAL | ACC_SYNCHRONIZED | ACC_NATIVE | ACC_STRICT)));*/ setfield_critical(class_method,o,"slot", "I", jint, i); /* setfield_critical(class_method,o,"returnType", "Ljava/lang/Class;", jclass, get_returntype(m)); setfield_critical(class_method,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes); setfield_critical(class_method,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) get_parametertypes(m));*/ } return array_method; } /* * Class: java/lang/Class * Method: getModifiers * Signature: ()I */ JNIEXPORT s4 JNICALL Java_java_lang_VMClass_getModifiers(JNIEnv *env, jclass clazz, java_lang_Class *that) { classinfo *c = (classinfo *) that; return c->flags; } /* * Class: java/lang/Class * Method: getName * Signature: ()Ljava/lang/String; */ JNIEXPORT java_lang_String* JNICALL Java_java_lang_VMClass_getName(JNIEnv *env, jclass clazz, java_lang_Class* that) { u4 i; classinfo *c = (classinfo *) that; java_lang_String *s = (java_lang_String *) javastring_new(c->name); if (!s) return NULL; /* return string where '/' is replaced by '.' */ for (i = 0; i < s->value->header.size; i++) { if (s->value->data[i] == '/') s->value->data[i] = '.'; } return s; } /* * Class: java/lang/VMClass * Method: getBeautifiedName * Signature: (Ljava/lang/Class;)Ljava/lang/String; */ JNIEXPORT java_lang_String* JNICALL Java_java_lang_VMClass_getBeautifiedName(JNIEnv *env, jclass clazz, java_lang_Class *par1) { u4 dimCnt; classinfo *c = (classinfo *) (par1); char *utf__ptr = c->name->text; /* current position in utf-text */ char **utf_ptr = &utf__ptr; char *desc_end = utf_end(c->name); /* points behind utf string */ java_lang_String *s; char *str = NULL; s4 len; s4 i; #if 0 log_text("Java_java_lang_VMClass_getBeautifiedName"); utf_display(c->name); log_text("beautifying"); #endif dimCnt=0; while ( *utf_ptr != desc_end ) { if (utf_nextu2(utf_ptr)=='[') dimCnt++; else break; } utf__ptr = (*utf_ptr) - 1; len = 0; #if 0 log_text("------>"); utf_display(c->name); log_text("<------"); #endif if (((*utf_ptr) + 1) == desc_end) { for (i = 0; i < PRIMITIVETYPE_COUNT; i++) { if (primitivetype_table[i].typesig == (*utf__ptr)) { len = dimCnt * 2 + strlen(primitivetype_table[i].name); str = MNEW(char, len + 1); strcpy(str, primitivetype_table[i].name); break; } } } if (len == 0) { if (dimCnt>0) { len = dimCnt + strlen(c->name->text) - 2; str = MNEW(char, len + 1); strncpy(str, ++utf__ptr, len - 2 * dimCnt); } else { len = strlen(c->name->text); str = MNEW(char, len + 1); strncpy(str, utf__ptr, len); } } dimCnt = len - 2 * dimCnt; str[len] = 0; for (i = len - 1; i >= dimCnt; i = i - 2) { str[i] = ']'; str[i - 1] = '['; } s = javastring_new(utf_new_char(str)); MFREE(str, char, len + 1); if (!s) return NULL; /* return string where '/' is replaced by '.' */ for (i = 0; i < s->value->header.size; i++) { if (s->value->data[i] == '/') s->value->data[i] = '.'; } return s; } /* * Class: java/lang/Class * Method: getSuperclass * Signature: ()Ljava/lang/Class; */ JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getSuperclass(JNIEnv *env, jclass clazz, java_lang_Class *that) { classinfo *cl = (classinfo *) that; classinfo *c = cl->super; if (!c) return NULL; use_class_as_object (c); return (java_lang_Class *) c; } /* * Class: java/lang/Class * Method: isArray * Signature: ()Z */ JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isArray(JNIEnv *env, jclass clazz, java_lang_Class *that) { classinfo *c = (classinfo *) that; return c->vftbl->arraydesc != NULL; } /* * Class: java/lang/Class * Method: isAssignableFrom * Signature: (Ljava/lang/Class;)Z */ JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isAssignableFrom(JNIEnv *env, jclass clazz, java_lang_Class *that, java_lang_Class *sup) { /* log_text("Java_java_lang_VMClass_isAssignableFrom");*/ if (!sup) return 0; if (!that) { panic("sup->vmClass is NULL in VMClass.isAssignableFrom"); return 0; } return (*env)->IsAssignableForm(env, (jclass) sup, (jclass) that); } /* * Class: java/lang/Class * Method: isInstance * Signature: (Ljava/lang/Object;)Z */ JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isInstance(JNIEnv *env, jclass clazz, java_lang_Class *that, java_lang_Object *obj) { /* classinfo *clazz = (classinfo *) that; */ return (*env)->IsInstanceOf(env, (jobject) obj, that); } /* * Class: java/lang/Class * Method: isInterface * Signature: ()Z */ JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isInterface(JNIEnv *env, jclass clazz, java_lang_Class *that) { classinfo *c = (classinfo *) that; if (c->flags & ACC_INTERFACE) return true; return false; } /* * Class: java/lang/Class * Method: isPrimitive * Signature: ()Z */ JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isPrimitive(JNIEnv *env, jclass clazz, java_lang_Class *that) { int i; classinfo *c = (classinfo *) that; /* search table of primitive classes */ for (i = 0; i < PRIMITIVETYPE_COUNT; i++) if (primitivetype_table[i].class_primitive == c) return true; return false; } /* * Class: java_lang_VMClass * Method: initialize * Signature: ()V */ JNIEXPORT void JNICALL Java_java_lang_VMClass_initialize(JNIEnv *env, jclass clazz, java_lang_Class *that) { log_text("Java_java_lang_VMClass_initialize"); } /* * Class: java_lang_VMClass * Method: loadArrayClass * Signature: (Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/lang/Class; */ JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_loadArrayClass(JNIEnv *env, jclass clazz, java_lang_String *par1, java_lang_ClassLoader* par2) { log_text("Java_java_lang_VMClass_loadArrayClass"); return 0; } /* * Class: java_lang_VMClass * Method: throwException * Signature: (Ljava/lang/Throwable;)V */ JNIEXPORT void JNICALL Java_java_lang_VMClass_throwException(JNIEnv *env, jclass clazz, java_lang_Throwable *par1) { 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)"); } /* * These are local overrides for various environment variables in Emacs. * Please do not remove this and leave it at the end of the file, where * Emacs will automagically detect them. * --------------------------------------------------------------------- * Local variables: * mode: c * indent-tabs-mode: t * c-basic-offset: 4 * tab-width: 4 * End: */