src/native/vm/reflect.c

   1 /* src/native/vm/reflect.c - helper functions for java/lang/reflect
   2
   3    Copyright (C) 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: reflect.c 8393 2007-08-22 01:10:09Z panzi $
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <stdint.h>
  33
  34 #if defined(ENABLE_ANNOTATIONS)
  35 #include "mm/memory.h"
  36
  37 #if defined(WITH_CLASSPATH_GNU)
  38 #include "vm/vm.h"
  39
  40 #include "native/include/sun_reflect_ConstantPool.h"
  41 #endif
  42 #endif
  43
  44 #include "native/jni.h"
  45 #include "native/llni.h"
  46 #include "native/native.h"
  47
  48 /* keep this order of the native includes */
  49
  50 #include "native/include/java_lang_String.h"
  51
  52 #if defined(WITH_CLASSPATH_SUN)
  53 # include "native/include/java_nio_ByteBuffer.h"        /* required by j.l.CL */
  54 #endif
  55 #include "native/include/java_lang_ClassLoader.h"
  56
  57 #include "native/include/java_lang_Object.h"
  58 #include "native/include/java_lang_Class.h"
  59 #include "native/include/java_lang_reflect_Constructor.h"
  60 #include "native/include/java_lang_reflect_Field.h"
  61 #include "native/include/java_lang_reflect_Method.h"
  62
  63 #include "native/vm/reflect.h"
  64
  65 #include "vm/builtin.h"
  66 #include "vm/global.h"
  67 #include "vm/stringlocal.h"
  68
  69 #include "vmcore/method.h"
  70
  71
  72 /* reflect_constructor_new *****************************************************
  73
  74    Allocates a new java.lang.reflect.Constructor object and
  75    initializes the fields with the method passed.
  76
  77 *******************************************************************************/
  78
  79 java_lang_reflect_Constructor *reflect_constructor_new(methodinfo *m)
  80 {
  81         classinfo                     *c;
  82         java_handle_t                 *o;
  83         java_lang_reflect_Constructor *rc;
  84         int32_t                        slot;
  85
  86         /* get declaring class */
  87
  88         c = m->class;
  89
  90         /* allocate a new object */
  91
  92         o = builtin_new(class_java_lang_reflect_Constructor);
  93
  94         if (o == NULL)
  95                 return NULL;
  96
  97         /* initialize instance fields */
  98
  99         rc = (java_lang_reflect_Constructor *) o;
 100
 101         /* calculate the slot */
 102
 103         slot = m - c->methods;
 104
 105 #if defined(WITH_CLASSPATH_GNU)
 106
 107         LLNI_field_set_cls(rc, clazz               , c);
 108         LLNI_field_set_val(rc, slot                , slot);
 109         LLNI_field_set_ref(rc, annotations         , method_get_annotations(m));
 110         LLNI_field_set_ref(rc, parameterAnnotations, method_get_parameterannotations(m));
 111
 112 #elif defined(WITH_CLASSPATH_SUN)
 113
 114         LLNI_field_set_cls(rc, clazz               , c);
 115         LLNI_field_set_ref(rc, parameterTypes      , method_get_parametertypearray(m));
 116         LLNI_field_set_ref(rc, exceptionTypes      , method_get_exceptionarray(m));
 117         LLNI_field_set_val(rc, modifiers           , m->flags & ACC_CLASS_REFLECT_MASK);
 118         LLNI_field_set_val(rc, slot                , slot);
 119         LLNI_field_set_ref(rc, signature           , m->signature ? (java_lang_String *) javastring_new(m->signature) : NULL);
 120         LLNI_field_set_ref(rc, annotations         , method_get_annotations(m));
 121         LLNI_field_set_ref(rc, parameterAnnotations, method_get_parameterannotations(m));
 122
 123 #else
 124 # error unknown classpath configuration
 125 #endif
 126
 127         return rc;
 128 }
 129
 130
 131 /* reflect_field_new ***********************************************************
 132
 133    Allocates a new java.lang.reflect.Field object and initializes the
 134    fields with the field passed.
 135
 136 *******************************************************************************/
 137
 138 java_lang_reflect_Field *reflect_field_new(fieldinfo *f)
 139 {
 140         classinfo               *c;
 141         java_handle_t           *o;
 142         java_lang_reflect_Field *rf;
 143         int32_t                  slot;
 144
 145         /* get declaring class */
 146
 147         c = f->class;
 148
 149         /* allocate a new object */
 150
 151         o = builtin_new(class_java_lang_reflect_Field);
 152
 153         if (o == NULL)
 154                 return NULL;
 155
 156         /* initialize instance fields */
 157
 158         rf = (java_lang_reflect_Field *) o;
 159
 160         /* calculate the slot */
 161
 162         slot = f - c->fields;
 163
 164 #if defined(WITH_CLASSPATH_GNU)
 165
 166         LLNI_field_set_cls(rf, clazz         , c);
 167
 168         /* The name needs to be interned */
 169         /* XXX implement me better! */
 170
 171         LLNI_field_set_ref(rf, name          , javastring_intern((java_lang_String *) javastring_new(f->name)));
 172         LLNI_field_set_val(rf, slot          , slot);
 173         LLNI_field_set_ref(rf, annotations   , field_get_annotations(f));
 174
 175 #elif defined(WITH_CLASSPATH_SUN)
 176
 177         LLNI_field_set_cls(rf, clazz         , c);
 178
 179         /* The name needs to be interned */
 180         /* XXX implement me better! */
 181
 182         LLNI_field_set_ref(rf, name          , javastring_intern((java_lang_String *) javastring_new(f->name)));
 183         LLNI_field_set_cls(rf, type          , (java_lang_Class *) field_get_type(f));
 184         LLNI_field_set_val(rf, modifiers     , f->flags);
 185         LLNI_field_set_val(rf, slot          , slot);
 186         LLNI_field_set_ref(rf, signature     , f->signature ? (java_lang_String *) javastring_new(f->signature) : NULL);
 187         LLNI_field_set_ref(rf, annotations   , field_get_annotations(f));
 188
 189 #else
 190 # error unknown classpath configuration
 191 #endif
 192
 193         return rf;
 194 }
 195
 196
 197 /* reflect_method_new **********************************************************
 198
 199    Allocates a new java.lang.reflect.Method object and initializes the
 200    fields with the method passed.
 201
 202 *******************************************************************************/
 203
 204 java_lang_reflect_Method *reflect_method_new(methodinfo *m)
 205 {
 206         classinfo                *c;
 207         java_handle_t            *o;
 208         java_lang_reflect_Method *rm;
 209         int32_t                   slot;
 210
 211         /* get declaring class */
 212
 213         c = m->class;
 214
 215         /* allocate a new object */
 216
 217         o = builtin_new(class_java_lang_reflect_Method);
 218
 219         if (o == NULL)
 220                 return NULL;
 221
 222         /* initialize instance fields */
 223
 224         rm = (java_lang_reflect_Method *) o;
 225
 226         /* calculate the slot */
 227
 228         slot = m - c->methods;
 229
 230 #if defined(WITH_CLASSPATH_GNU)
 231
 232         LLNI_field_set_cls(rm, clazz               , m->class);
 233
 234         /* The name needs to be interned */
 235         /* XXX implement me better! */
 236
 237         LLNI_field_set_ref(rm, name                , javastring_intern((java_lang_String *) javastring_new(m->name)));
 238         LLNI_field_set_val(rm, slot                , slot);
 239         LLNI_field_set_ref(rm, annotations         , method_get_annotations(m));
 240         LLNI_field_set_ref(rm, parameterAnnotations, method_get_parameterannotations(m));
 241         LLNI_field_set_ref(rm, annotationDefault   , method_get_annotationdefault(m));
 242
 243 #elif defined(WITH_CLASSPATH_SUN)
 244
 245         LLNI_field_set_cls(rm, clazz               , m->class);
 246
 247         /* The name needs to be interned */
 248         /* XXX implement me better! */
 249
 250         LLNI_field_set_ref(rm, name                , javastring_intern((java_lang_String *) javastring_new(m->name)));
 251         LLNI_field_set_ref(rm, parameterTypes      , method_get_parametertypearray(m));
 252         LLNI_field_set_cls(rm, returnType          , (java_lang_Class *) method_returntype_get(m));
 253         LLNI_field_set_ref(rm, exceptionTypes      , method_get_exceptionarray(m));
 254         LLNI_field_set_val(rm, modifiers           , m->flags & ACC_CLASS_REFLECT_MASK);
 255         LLNI_field_set_val(rm, slot                , slot);
 256         LLNI_field_set_ref(rm, signature           , m->signature ? (java_lang_String *) javastring_new(m->signature) : NULL);
 257         LLNI_field_set_ref(rm, annotations         , method_get_annotations(m));
 258         LLNI_field_set_ref(rm, parameterAnnotations, method_get_parameterannotations(m));
 259         LLNI_field_set_ref(rm, annotationDefault   , method_get_annotationdefault(m));
 260
 261 #else
 262 # error unknown classpath configuration
 263 #endif
 264
 265         return rm;
 266 }
 267
 268
 269 #if defined(WITH_CLASSPATH_GNU) && defined(ENABLE_ANNOTATIONS)
 270 /* reflect_get_declaredannotatios *********************************************
 271
 272    Returns a java.util.Map<Class<? extends Annotation>, Annotation>
 273    of the declared annotations.
 274
 275 *******************************************************************************/
 276
 277 struct java_util_Map* reflect_get_declaredannotatios(
 278         java_handle_bytearray_t *annotations,
 279         java_lang_Class         *declaringClass,
 280         classinfo               *referer)
 281 {
 282         static methodinfo        *m_parseAnnotations   = NULL;
 283         utf                      *utf_parseAnnotations = NULL;
 284         utf                      *utf_desc             = NULL;
 285         sun_reflect_ConstantPool *constantPool         = NULL;
 286         java_lang_Object         *constantPoolOop      = (java_lang_Object*)declaringClass;
 287
 288         constantPool =
 289                 (sun_reflect_ConstantPool*)native_new_and_init(
 290                         class_sun_reflect_ConstantPool);
 291
 292         if(constantPool == NULL) {
 293                 /* out of memory */
 294                 return NULL;
 295         }
 296
 297         LLNI_field_set_ref(constantPool, constantPoolOop, constantPoolOop);
 298
 299         /* only resolve the method the first time */
 300         if (m_parseAnnotations == NULL) {
 301                 utf_parseAnnotations = utf_new_char("parseAnnotations");
 302                 utf_desc = utf_new_char(
 303                         "([BLsun/reflect/ConstantPool;Ljava/lang/Class;)"
 304                         "Ljava/util/Map;");
 305
 306                 if (utf_parseAnnotations == NULL || utf_desc == NULL) {
 307                         /* out of memory */
 308                         return NULL;
 309                 }
 310
 311                 m_parseAnnotations = class_resolveclassmethod(
 312                         class_sun_reflect_annotation_AnnotationParser,
 313                         utf_parseAnnotations,
 314                         utf_desc,
 315                         referer,
 316                         true);
 317
 318                 if (m_parseAnnotations == NULL) {
 319                         /* method not found */
 320                         return NULL;
 321                 }
 322         }
 323
 324         return (struct java_util_Map*)vm_call_method(
 325                         m_parseAnnotations, NULL, annotations,
 326                         constantPool, declaringClass);
 327 }
 328
 329
 330 /* reflect_get_parameterannotations *******************************************
 331
 332    Parses and returns the parameter annotations of a method.
 333
 334 *******************************************************************************/
 335
 336 java_handle_objectarray_t* reflect_get_parameterannotations(
 337         java_handle_t     *parameterAnnotations,
 338         int32_t            slot,
 339         java_lang_Class   *declaringClass,
 340         classinfo         *referer)
 341 {
 342         /* This method in java would be basically the following.
 343          * We don't do it in java because we don't want to make a
 344          * public method with wich you can get a ConstantPool, because
 345          * with that you could read any kind of constants (even private
 346          * ones).
 347          *
 348          * ConstantPool constPool = new ConstantPool();
 349          * constPool.constantPoolOop = getDeclaringClass();
 350          * return sun.reflect.AnnotationParser.parseParameterAnnotations(
 351          *      parameterAnnotations,
 352          *      constPool,
 353          *      getDeclaringClass(),
 354          *      getParameterTypes().length);
 355          */
 356         static methodinfo        *m_parseParameterAnnotations   = NULL;
 357         utf                      *utf_parseParameterAnnotations = NULL;
 358         utf                      *utf_desc        = NULL;
 359         sun_reflect_ConstantPool *constantPool    = NULL;
 360         java_lang_Object         *constantPoolOop = (java_lang_Object*)declaringClass;
 361         classinfo                *c               = NULL;
 362         methodinfo               *m               = NULL;
 363         int32_t                   numParameters   = -1;
 364
 365         /* get parameter count */
 366
 367         c = LLNI_classinfo_unwrap(declaringClass);
 368         m = &(c->methods[slot]);
 369
 370         numParameters = method_get_parametercount(m);
 371
 372         if (numParameters < 0) {
 373                 /* error parsing descriptor */
 374                 return NULL;
 375         }
 376
 377         /* get ConstantPool */
 378
 379         constantPool =
 380                 (sun_reflect_ConstantPool*)native_new_and_init(
 381                         class_sun_reflect_ConstantPool);
 382
 383         if(constantPool == NULL) {
 384                 /* out of memory */
 385                 return NULL;
 386         }
 387
 388         LLNI_field_set_ref(constantPool, constantPoolOop, constantPoolOop);
 389
 390         /* only resolve the method the first time */
 391         if (m_parseParameterAnnotations == NULL) {
 392                 utf_parseParameterAnnotations = utf_new_char("parseParameterAnnotations");
 393                 utf_desc = utf_new_char(
 394                         "([BLsun/reflect/ConstantPool;Ljava/lang/Class;I)"
 395                         "[[Ljava/lang/annotation/Annotation;");
 396
 397                 if (utf_parseParameterAnnotations == NULL || utf_desc == NULL) {
 398                         /* out of memory */
 399                         return NULL;
 400                 }
 401
 402                 /* get parser method */
 403
 404                 m_parseParameterAnnotations = class_resolveclassmethod(
 405                         class_sun_reflect_annotation_AnnotationParser,
 406                         utf_parseParameterAnnotations,
 407                         utf_desc,
 408                         referer,
 409                         true);
 410
 411                 if (m_parseParameterAnnotations == NULL)
 412                 {
 413                         /* method not found */
 414                         return NULL;
 415                 }
 416         }
 417
 418         return (java_handle_objectarray_t*)vm_call_method(
 419                 m_parseParameterAnnotations, NULL, parameterAnnotations,
 420                 constantPool, declaringClass, numParameters);
 421 }
 422 #endif
 423
 424
 425 /*
 426  * These are local overrides for various environment variables in Emacs.
 427  * Please do not remove this and leave it at the end of the file, where
 428  * Emacs will automagically detect them.
 429  * ---------------------------------------------------------------------
 430  * Local variables:
 431  * mode: c
 432  * indent-tabs-mode: t
 433  * c-basic-offset: 4
 434  * tab-width: 4
 435  * End:
 436  * vim:noexpandtab:sw=4:ts=4:
 437  */