src/native/vm/gnu/java_lang_reflect_Method.c

   1 /* src/native/vm/gnu/java_lang_reflect_Method.c
   2
   3    Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  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.
  14
  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.
  19
  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., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25 */
  26
  27
  28 #include "config.h"
  29
  30 #include <assert.h>
  31
  32 #if defined(ENABLE_ANNOTATIONS)
  33 #include "vm/vm.h"
  34 #endif
  35
  36 #include "vm/types.h"
  37
  38 #include "native/jni.h"
  39 #include "native/llni.h"
  40 #include "native/native.h"
  41
  42 #include "native/include/java_lang_Object.h"
  43 #include "native/include/java_lang_Class.h"
  44 #include "native/include/java_lang_String.h"
  45
  46 #if defined(ENABLE_ANNOTATIONS)
  47 #include "native/include/sun_reflect_ConstantPool.h"
  48 #include "native/vm/reflect.h"
  49 #endif
  50
  51 #include "native/include/java_lang_reflect_Method.h"
  52
  53 #include "native/vm/java_lang_reflect_Method.h"
  54
  55 #include "vm/access.h"
  56 #include "vm/global.h"
  57 #include "vm/builtin.h"
  58 #include "vm/exceptions.h"
  59 #include "vm/initialize.h"
  60 #include "vm/resolve.h"
  61 #include "vm/stringlocal.h"
  62
  63 #include "vmcore/method.h"
  64
  65
  66 /* native methods implemented by this file ************************************/
  67
  68 static JNINativeMethod methods[] = {
  69         { "getModifiersInternal",    "()I",                                                                         (void *) (ptrint) &Java_java_lang_reflect_Method_getModifiersInternal    },
  70         { "getReturnType",           "()Ljava/lang/Class;",                                                         (void *) (ptrint) &Java_java_lang_reflect_Method_getReturnType           },
  71         { "getParameterTypes",       "()[Ljava/lang/Class;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getParameterTypes       },
  72         { "getExceptionTypes",       "()[Ljava/lang/Class;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getExceptionTypes       },
  73         { "invokeNative",            "(Ljava/lang/Object;[Ljava/lang/Object;Ljava/lang/Class;I)Ljava/lang/Object;", (void *) (ptrint) &Java_java_lang_reflect_Method_invokeNative            },
  74         { "getSignature",            "()Ljava/lang/String;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getSignature            },
  75 #if defined(ENABLE_ANNOTATIONS)
  76         { "getDefaultValue",         "()Ljava/lang/Object;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getDefaultValue         },
  77         { "declaredAnnotations",     "()Ljava/util/Map;",                                                           (void *) (ptrint) &Java_java_lang_reflect_Method_declaredAnnotations     },
  78         { "getParameterAnnotations", "()[[Ljava/lang/annotation/Annotation;",                                       (void *) (ptrint) &Java_java_lang_reflect_Method_getParameterAnnotations },
  79 #endif
  80 };
  81
  82
  83 /* _Jv_java_lang_reflect_Method_init *******************************************
  84
  85    Register native functions.
  86
  87 *******************************************************************************/
  88
  89 void _Jv_java_lang_reflect_Method_init(void)
  90 {
  91         utf *u;
  92
  93         u = utf_new_char("java/lang/reflect/Method");
  94
  95         native_method_register(u, methods, NATIVE_METHODS_COUNT);
  96 }
  97
  98
  99 /*
 100  * Class:     java/lang/reflect/Method
 101  * Method:    getModifiersInternal
 102  * Signature: ()I
 103  */
 104 JNIEXPORT s4 JNICALL Java_java_lang_reflect_Method_getModifiersInternal(JNIEnv *env, java_lang_reflect_Method *this)
 105 {
 106         classinfo  *c;
 107         methodinfo *m;
 108         int32_t     slot;
 109
 110         LLNI_field_get_cls(this, clazz, c);
 111         LLNI_field_get_val(this, slot , slot);
 112         m = &(c->methods[slot]);
 113
 114         return m->flags;
 115 }
 116
 117
 118 /*
 119  * Class:     java/lang/reflect/Method
 120  * Method:    getReturnType
 121  * Signature: ()Ljava/lang/Class;
 122  */
 123 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_reflect_Method_getReturnType(JNIEnv *env, java_lang_reflect_Method *this)
 124 {
 125         classinfo  *c;
 126         methodinfo *m;
 127         classinfo  *result;
 128         int32_t     slot;
 129
 130         LLNI_field_get_cls(this, clazz, c);
 131         LLNI_field_get_val(this, slot , slot);
 132         m = &(c->methods[slot]);
 133
 134         result = method_returntype_get(m);
 135
 136         return LLNI_classinfo_wrap(result);
 137 }
 138
 139
 140 /*
 141  * Class:     java/lang/reflect/Method
 142  * Method:    getParameterTypes
 143  * Signature: ()[Ljava/lang/Class;
 144  */
 145 JNIEXPORT java_handle_objectarray_t* JNICALL Java_java_lang_reflect_Method_getParameterTypes(JNIEnv *env, java_lang_reflect_Method *this)
 146 {
 147         classinfo  *c;
 148         methodinfo *m;
 149         int32_t     slot;
 150
 151         LLNI_field_get_cls(this, clazz, c);
 152         LLNI_field_get_val(this, slot , slot);
 153         m = &(c->methods[slot]);
 154
 155         return method_get_parametertypearray(m);
 156 }
 157
 158
 159 /*
 160  * Class:     java/lang/reflect/Method
 161  * Method:    getExceptionTypes
 162  * Signature: ()[Ljava/lang/Class;
 163  */
 164 JNIEXPORT java_handle_objectarray_t* JNICALL Java_java_lang_reflect_Method_getExceptionTypes(JNIEnv *env, java_lang_reflect_Method *this)
 165 {
 166         classinfo  *c;
 167         methodinfo *m;
 168         int32_t     slot;
 169
 170         LLNI_field_get_cls(this, clazz, c);
 171         LLNI_field_get_val(this, slot , slot);
 172         m = &(c->methods[slot]);
 173
 174         return method_get_exceptionarray(m);
 175 }
 176
 177
 178 /*
 179  * Class:     java/lang/reflect/Method
 180  * Method:    invokeNative
 181  * Signature: (Ljava/lang/Object;[Ljava/lang/Object;Ljava/lang/Class;I)Ljava/lang/Object;
 182  */
 183 JNIEXPORT java_lang_Object* JNICALL Java_java_lang_reflect_Method_invokeNative(JNIEnv *env, java_lang_reflect_Method *this, java_lang_Object *o, java_handle_objectarray_t *args, java_lang_Class *clazz, s4 slot)
 184 {
 185         /* just to be sure */
 186
 187         assert(LLNI_field_direct(this, clazz) == clazz);
 188         assert(LLNI_field_direct(this, slot)  == slot);
 189
 190         return _Jv_java_lang_reflect_Method_invoke(this, o, args);
 191 }
 192
 193
 194 /*
 195  * Class:     java/lang/reflect/Method
 196  * Method:    getSignature
 197  * Signature: ()Ljava/lang/String;
 198  */
 199 JNIEXPORT java_lang_String* JNICALL Java_java_lang_reflect_Method_getSignature(JNIEnv *env, java_lang_reflect_Method* this)
 200 {
 201         classinfo     *c;
 202         methodinfo    *m;
 203         java_handle_t *o;
 204         int32_t        slot;
 205
 206         LLNI_field_get_cls(this, clazz, c);
 207         LLNI_field_get_val(this, slot , slot);
 208         m = &(c->methods[slot]);
 209
 210         if (m->signature == NULL)
 211                 return NULL;
 212
 213         o = javastring_new(m->signature);
 214
 215         /* in error case o is NULL */
 216
 217         return (java_lang_String *) o;
 218 }
 219
 220 #if defined(ENABLE_ANNOTATIONS)
 221 /*
 222  * Class:     java/lang/reflect/Method
 223  * Method:    getDefaultValue
 224  * Signature: ()Ljava/lang/Object;
 225  */
 226 JNIEXPORT struct java_lang_Object* JNICALL Java_java_lang_reflect_Method_getDefaultValue(JNIEnv *env, struct java_lang_reflect_Method* this)
 227 {
 228         static methodinfo        *m_parseAnnotationDefault   = NULL;
 229         utf                      *utf_parseAnnotationDefault = NULL;
 230         utf                      *utf_desc        = NULL;
 231         sun_reflect_ConstantPool *constantPool    = NULL;
 232         java_lang_Class          *constantPoolOop = NULL;
 233         classinfo                *referer         = NULL;
 234
 235         if (this == NULL) {
 236                 exceptions_throw_nullpointerexception();
 237                 return NULL;
 238         }
 239
 240         constantPool =
 241                 (sun_reflect_ConstantPool*)native_new_and_init(
 242                         class_sun_reflect_ConstantPool);
 243
 244         if(constantPool == NULL) {
 245                 /* out of memory */
 246                 return NULL;
 247         }
 248
 249         LLNI_field_get_ref(this, clazz, constantPoolOop);
 250         LLNI_field_set_ref(constantPool, constantPoolOop, (java_lang_Object*)constantPoolOop);
 251
 252         /* only resolve the method the first time */
 253         if (m_parseAnnotationDefault == NULL) {
 254                 utf_parseAnnotationDefault = utf_new_char("parseAnnotationDefault");
 255                 utf_desc = utf_new_char(
 256                         "(Ljava/lang/reflect/Method;[BLsun/reflect/ConstantPool;)"
 257                         "Ljava/lang/Object;");
 258
 259                 if (utf_parseAnnotationDefault == NULL || utf_desc == NULL) {
 260                         /* out of memory */
 261                         return NULL;
 262                 }
 263
 264                 LLNI_class_get(this, referer);
 265
 266                 m_parseAnnotationDefault = class_resolveclassmethod(
 267                         class_sun_reflect_annotation_AnnotationParser,
 268                         utf_parseAnnotationDefault,
 269                         utf_desc,
 270                         referer,
 271                         true);
 272
 273                 if (m_parseAnnotationDefault == NULL) {
 274                         /* method not found */
 275                         return NULL;
 276                 }
 277         }
 278
 279         return (java_lang_Object*)vm_call_method(
 280                 m_parseAnnotationDefault, NULL,
 281                 this, this->annotationDefault, constantPool);
 282 }
 283
 284
 285 /*
 286  * Class:     java/lang/reflect/Method
 287  * Method:    declaredAnnotations
 288  * Signature: ()Ljava/util/Map;
 289  */
 290 JNIEXPORT struct java_util_Map* JNICALL Java_java_lang_reflect_Method_declaredAnnotations(JNIEnv *env, java_lang_reflect_Method *this)
 291 {
 292         struct java_util_Map    *declaredAnnotations = NULL;
 293         java_handle_bytearray_t *annotations         = NULL;
 294         java_lang_Class         *declaringClass      = NULL;
 295         classinfo               *referer             = NULL;
 296
 297         LLNI_field_get_ref(this, declaredAnnotations, declaredAnnotations);
 298
 299         if (declaredAnnotations == NULL) {
 300                 LLNI_field_get_val(this, annotations, annotations);
 301                 LLNI_field_get_ref(this, clazz, declaringClass);
 302                 LLNI_class_get(this, referer);
 303
 304                 declaredAnnotations = reflect_get_declaredannotatios(annotations, declaringClass, referer);
 305
 306                 LLNI_field_set_ref(this, declaredAnnotations, declaredAnnotations);
 307         }
 308
 309         return declaredAnnotations;
 310 }
 311
 312
 313 /*
 314  * Class:     java/lang/reflect/Method
 315  * Method:    getParameterAnnotations
 316  * Signature: ()[[Ljava/lang/annotation/Annotation;
 317  */
 318 JNIEXPORT java_handle_objectarray_t* JNICALL Java_java_lang_reflect_Method_getParameterAnnotations(JNIEnv *env, java_lang_reflect_Method *this)
 319 {
 320         java_handle_bytearray_t *parameterAnnotations = NULL;
 321         int32_t                  slot                 = -1;
 322         java_lang_Class         *declaringClass       = NULL;
 323         classinfo               *referer              = NULL;
 324
 325         LLNI_field_get_ref(this, parameterAnnotations, parameterAnnotations);
 326         LLNI_field_get_val(this, slot, slot);
 327         LLNI_field_get_ref(this, clazz, declaringClass);
 328         LLNI_class_get(this, referer);
 329
 330         return reflect_get_parameterannotations((java_handle_t*)parameterAnnotations, slot, declaringClass, referer);
 331 }
 332 #endif
 333
 334
 335 /*
 336  * These are local overrides for various environment variables in Emacs.
 337  * Please do not remove this and leave it at the end of the file, where
 338  * Emacs will automagically detect them.
 339  * ---------------------------------------------------------------------
 340  * Local variables:
 341  * mode: c
 342  * indent-tabs-mode: t
 343  * c-basic-offset: 4
 344  * tab-width: 4
 345  * End:
 346  */