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    $Id: java_lang_reflect_Method.c 8321 2007-08-16 11:37:25Z michi $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33
  34 #if defined(ENABLE_ANNOTATIONS)
  35 #include "vm/vm.h"
  36 #endif
  37
  38 #include "vm/types.h"
  39
  40 #include "native/jni.h"
  41 #include "native/llni.h"
  42 #include "native/native.h"
  43
  44 #include "native/include/java_lang_Object.h"
  45 #include "native/include/java_lang_Class.h"
  46 #include "native/include/java_lang_String.h"
  47
  48 #if defined(ENABLE_ANNOTATIONS)
  49 #include "native/include/sun_reflect_ConstantPool.h"
  50 #include "native/vm/reflect.h"
  51 #endif
  52
  53 #include "native/include/java_lang_reflect_Method.h"
  54
  55 #include "native/vm/java_lang_reflect_Method.h"
  56
  57 #include "vm/access.h"
  58 #include "vm/global.h"
  59 #include "vm/builtin.h"
  60 #include "vm/exceptions.h"
  61 #include "vm/initialize.h"
  62 #include "vm/resolve.h"
  63 #include "vm/stringlocal.h"
  64
  65 #include "vmcore/method.h"
  66
  67
  68 /* native methods implemented by this file ************************************/
  69
  70 static JNINativeMethod methods[] = {
  71         { "getModifiersInternal",    "()I",                                                                         (void *) (ptrint) &Java_java_lang_reflect_Method_getModifiersInternal    },
  72         { "getReturnType",           "()Ljava/lang/Class;",                                                         (void *) (ptrint) &Java_java_lang_reflect_Method_getReturnType           },
  73         { "getParameterTypes",       "()[Ljava/lang/Class;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getParameterTypes       },
  74         { "getExceptionTypes",       "()[Ljava/lang/Class;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getExceptionTypes       },
  75         { "invokeNative",            "(Ljava/lang/Object;[Ljava/lang/Object;Ljava/lang/Class;I)Ljava/lang/Object;", (void *) (ptrint) &Java_java_lang_reflect_Method_invokeNative            },
  76         { "getSignature",            "()Ljava/lang/String;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getSignature            },
  77 #if defined(ENABLE_ANNOTATIONS)
  78         { "getDefaultValue",         "()Ljava/lang/Object;",                                                        (void *) (ptrint) &Java_java_lang_reflect_Method_getDefaultValue         },
  79         { "declaredAnnotations",     "()Ljava/util/Map;",                                                           (void *) (ptrint) &Java_java_lang_reflect_Method_declaredAnnotations     },
  80         { "getParameterAnnotations", "()[[Ljava/lang/annotation/Annotation;",                                       (void *) (ptrint) &Java_java_lang_reflect_Method_getParameterAnnotations },
  81 #endif
  82 };
  83
  84
  85 /* _Jv_java_lang_reflect_Method_init *******************************************
  86
  87    Register native functions.
  88
  89 *******************************************************************************/
  90
  91 void _Jv_java_lang_reflect_Method_init(void)
  92 {
  93         utf *u;
  94
  95         u = utf_new_char("java/lang/reflect/Method");
  96
  97         native_method_register(u, methods, NATIVE_METHODS_COUNT);
  98 }
  99
 100
 101 /*
 102  * Class:     java/lang/reflect/Method
 103  * Method:    getModifiersInternal
 104  * Signature: ()I
 105  */
 106 JNIEXPORT s4 JNICALL Java_java_lang_reflect_Method_getModifiersInternal(JNIEnv *env, java_lang_reflect_Method *this)
 107 {
 108         classinfo  *c;
 109         methodinfo *m;
 110         int32_t     slot;
 111
 112         LLNI_field_get_cls(this, clazz, c);
 113         LLNI_field_get_val(this, slot , slot);
 114         m = &(c->methods[slot]);
 115
 116         return m->flags;
 117 }
 118
 119
 120 /*
 121  * Class:     java/lang/reflect/Method
 122  * Method:    getReturnType
 123  * Signature: ()Ljava/lang/Class;
 124  */
 125 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_reflect_Method_getReturnType(JNIEnv *env, java_lang_reflect_Method *this)
 126 {
 127         classinfo  *c;
 128         methodinfo *m;
 129         classinfo  *result;
 130         int32_t     slot;
 131
 132         LLNI_field_get_cls(this, clazz, c);
 133         LLNI_field_get_val(this, slot , slot);
 134         m = &(c->methods[slot]);
 135
 136         result = method_returntype_get(m);
 137
 138         return (java_lang_Class *) result;
 139 }
 140
 141
 142 /*
 143  * Class:     java/lang/reflect/Method
 144  * Method:    getParameterTypes
 145  * Signature: ()[Ljava/lang/Class;
 146  */
 147 JNIEXPORT java_handle_objectarray_t* JNICALL Java_java_lang_reflect_Method_getParameterTypes(JNIEnv *env, java_lang_reflect_Method *this)
 148 {
 149         classinfo  *c;
 150         methodinfo *m;
 151         int32_t     slot;
 152
 153         LLNI_field_get_cls(this, clazz, c);
 154         LLNI_field_get_val(this, slot , slot);
 155         m = &(c->methods[slot]);
 156
 157         return method_get_parametertypearray(m);
 158 }
 159
 160
 161 /*
 162  * Class:     java/lang/reflect/Method
 163  * Method:    getExceptionTypes
 164  * Signature: ()[Ljava/lang/Class;
 165  */
 166 JNIEXPORT java_handle_objectarray_t* JNICALL Java_java_lang_reflect_Method_getExceptionTypes(JNIEnv *env, java_lang_reflect_Method *this)
 167 {
 168         classinfo  *c;
 169         methodinfo *m;
 170         int32_t     slot;
 171
 172         LLNI_field_get_cls(this, clazz, c);
 173         LLNI_field_get_val(this, slot , slot);
 174         m = &(c->methods[slot]);
 175
 176         return method_get_exceptionarray(m);
 177 }
 178
 179
 180 /*
 181  * Class:     java/lang/reflect/Method
 182  * Method:    invokeNative
 183  * Signature: (Ljava/lang/Object;[Ljava/lang/Object;Ljava/lang/Class;I)Ljava/lang/Object;
 184  */
 185 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)
 186 {
 187         /* just to be sure */
 188
 189         assert(LLNI_field_direct(this, clazz) == clazz);
 190         assert(LLNI_field_direct(this, slot)  == slot);
 191
 192         return _Jv_java_lang_reflect_Method_invoke(this, o, args);
 193 }
 194
 195
 196 /*
 197  * Class:     java/lang/reflect/Method
 198  * Method:    getSignature
 199  * Signature: ()Ljava/lang/String;
 200  */
 201 JNIEXPORT java_lang_String* JNICALL Java_java_lang_reflect_Method_getSignature(JNIEnv *env, java_lang_reflect_Method* this)
 202 {
 203         classinfo     *c;
 204         methodinfo    *m;
 205         java_handle_t *o;
 206         int32_t        slot;
 207
 208         LLNI_field_get_cls(this, clazz, c);
 209         LLNI_field_get_val(this, slot , slot);
 210         m = &(c->methods[slot]);
 211
 212         if (m->signature == NULL)
 213                 return NULL;
 214
 215         o = javastring_new(m->signature);
 216
 217         /* in error case o is NULL */
 218
 219         return (java_lang_String *) o;
 220 }
 221
 222 #if defined(ENABLE_ANNOTATIONS)
 223 /*
 224  * Class:     java/lang/reflect/Method
 225  * Method:    getDefaultValue
 226  * Signature: ()Ljava/lang/Object;
 227  */
 228 JNIEXPORT struct java_lang_Object* JNICALL Java_java_lang_reflect_Method_getDefaultValue(JNIEnv *env, struct java_lang_reflect_Method* this)
 229 {
 230         static methodinfo        *m_parseAnnotationDefault   = NULL;
 231         utf                      *utf_parseAnnotationDefault = NULL;
 232         utf                      *utf_desc        = NULL;
 233         sun_reflect_ConstantPool *constantPool    = NULL;
 234         java_handle_t            *o               = (java_handle_t*)this;
 235         java_lang_Class          *constantPoolOop = NULL;
 236
 237         if (this == NULL) {
 238                 exceptions_throw_nullpointerexception();
 239                 return NULL;
 240         }
 241
 242         constantPool =
 243                 (sun_reflect_ConstantPool*)native_new_and_init(
 244                         class_sun_reflect_ConstantPool);
 245
 246         if(constantPool == NULL) {
 247                 /* out of memory */
 248                 return NULL;
 249         }
 250
 251         LLNI_field_get_ref(this, clazz, constantPoolOop);
 252         LLNI_field_set_ref(constantPool, constantPoolOop, (java_lang_Object*)constantPoolOop);
 253
 254         /* only resolve the method the first time */
 255         if (m_parseAnnotationDefault == NULL) {
 256                 utf_parseAnnotationDefault = utf_new_char("parseAnnotationDefault");
 257                 utf_desc = utf_new_char(
 258                         "(Ljava/lang/reflect/Method;[BLsun/reflect/ConstantPool;)"
 259                         "Ljava/lang/Object;");
 260
 261                 if (utf_parseAnnotationDefault == NULL || utf_desc == NULL) {
 262                         /* out of memory */
 263                         return NULL;
 264                 }
 265
 266                 m_parseAnnotationDefault = class_resolveclassmethod(
 267                         class_sun_reflect_annotation_AnnotationParser,
 268                         utf_parseAnnotationDefault,
 269                         utf_desc,
 270                         o->vftbl->class,
 271                         true);
 272
 273                 if (m_parseAnnotationDefault == NULL)
 274                 {
 275                         /* method not found */
 276                         return NULL;
 277                 }
 278         }
 279
 280         return (java_lang_Object*)vm_call_method(
 281                 m_parseAnnotationDefault, NULL,
 282                 this, this->annotationDefault, constantPool);
 283 }
 284
 285
 286 /*
 287  * Class:     java/lang/reflect/Method
 288  * Method:    declaredAnnotations
 289  * Signature: ()Ljava/util/Map;
 290  */
 291 JNIEXPORT struct java_util_Map* JNICALL Java_java_lang_reflect_Method_declaredAnnotations(JNIEnv *env, struct java_lang_reflect_Method* this)
 292 {
 293         java_handle_t        *o                   = (java_handle_t*)this;
 294         struct java_util_Map *declaredAnnotations = NULL;
 295         java_bytearray       *annotations         = NULL;
 296         java_lang_Class      *declaringClass      = NULL;
 297
 298         if (this == NULL) {
 299                 exceptions_throw_nullpointerexception();
 300                 return NULL;
 301         }
 302
 303         LLNI_field_get_ref(this, declaredAnnotations, declaredAnnotations);
 304
 305         if (declaredAnnotations == NULL) {
 306                 LLNI_field_get_val(this, annotations, annotations);
 307                 LLNI_field_get_ref(this, clazz, declaringClass);
 308
 309                 declaredAnnotations = reflect_get_declaredannotatios(annotations, declaringClass, o->vftbl->class);
 310
 311                 LLNI_field_set_ref(this, declaredAnnotations, declaredAnnotations);
 312         }
 313
 314         return declaredAnnotations;
 315 }
 316
 317
 318 /*
 319  * Class:     java/lang/reflect/Method
 320  * Method:    getParameterAnnotations
 321  * Signature: ()[[Ljava/lang/annotation/Annotation;
 322  */
 323 JNIEXPORT java_handle_objectarray_t* JNICALL Java_java_lang_reflect_Method_getParameterAnnotations(JNIEnv *env, struct java_lang_reflect_Method* this)
 324 {
 325         java_handle_t   *o                    = (java_handle_t*)this;
 326         java_bytearray  *parameterAnnotations = NULL;
 327         int32_t          slot                 = -1;
 328         java_lang_Class *declaringClass       = NULL;
 329
 330         if (this == NULL) {
 331                 exceptions_throw_nullpointerexception();
 332                 return NULL;
 333         }
 334
 335         LLNI_field_get_ref(this, parameterAnnotations, parameterAnnotations);
 336         LLNI_field_get_val(this, slot, slot);
 337         LLNI_field_get_ref(this, clazz, declaringClass);
 338
 339         return reflect_get_parameterannotations((java_handle_t*)parameterAnnotations, slot, declaringClass, o->vftbl->class);
 340 }
 341 #endif
 342
 343
 344 /*
 345  * These are local overrides for various environment variables in Emacs.
 346  * Please do not remove this and leave it at the end of the file, where
 347  * Emacs will automagically detect them.
 348  * ---------------------------------------------------------------------
 349  * Local variables:
 350  * mode: c
 351  * indent-tabs-mode: t
 352  * c-basic-offset: 4
 353  * tab-width: 4
 354  * End:
 355  */