1 /* src/vmcore/class.h - class related functions header
3 Copyright (C) 1996-2005, 2006, 2007, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
29 /* forward typedefs ***********************************************************/
31 typedef struct classinfo classinfo;
32 typedef struct innerclassinfo innerclassinfo;
33 typedef struct extra_classref extra_classref;
34 typedef struct castinfo castinfo;
43 #include "toolbox/list.h"
45 #include "vm/global.h"
46 #include "vm/stringlocal.h"
48 #if defined(ENABLE_JAVASE)
49 # include "vmcore/annotation.h"
52 #include "vmcore/field.h"
53 #include "vmcore/linker.h"
54 #include "vmcore/loader.h"
55 #include "vmcore/method.h"
56 #include "vmcore/references.h"
57 #include "vmcore/utf8.h"
60 /* class state defines ********************************************************/
62 #define CLASS_LOADING 0x0001
63 #define CLASS_LOADED 0x0002
64 #define CLASS_LINKING 0x0004
65 #define CLASS_LINKED 0x0008
66 #define CLASS_INITIALIZING 0x0010
67 #define CLASS_INITIALIZED 0x0020
68 #define CLASS_ERROR 0x0040
71 /* some macros ****************************************************************/
73 #define CLASS_IS_OR_ALMOST_INITIALIZED(c) \
74 (((c)->state & CLASS_INITIALIZING) || ((c)->state & CLASS_INITIALIZED))
77 /* classinfo ******************************************************************/
79 /* We define this dummy structure of java_lang_Class so we can
80 bootstrap cacaoh without needing a java_lang_Class.h file. Whether
81 the size of the dummy structure is big enough is checked during
82 runtime in vm_create. */
86 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
88 #elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
90 #elif defined(WITH_JAVA_RUNTIME_LIBRARY_CLDC1_1)
93 # error unknown classpath configuration
95 } dummy_java_lang_Class;
97 struct classinfo { /* class structure */
98 dummy_java_lang_Class object;
100 s4 flags; /* ACC flags */
101 utf *name; /* class name */
103 s4 cpcount; /* number of entries in constant pool */
104 u1 *cptags; /* constant pool tags */
105 voidptr *cpinfos; /* pointer to constant pool info structures */
107 s4 classrefcount; /* number of symbolic class references */
108 constant_classref *classrefs; /* table of symbolic class references */
109 extra_classref *extclassrefs; /* additional classrefs */
110 s4 parseddescsize; /* size of the parsed descriptors block */
111 u1 *parseddescs; /* parsed descriptors */
113 classinfo *super; /* super class */
114 classinfo *sub; /* sub class pointer */
115 classinfo *nextsub; /* pointer to next class in sub class list */
117 int32_t interfacescount; /* number of interfaces */
118 classinfo **interfaces; /* super interfaces */
120 int32_t fieldscount; /* number of fields */
121 fieldinfo *fields; /* field table */
123 int32_t methodscount; /* number of methods */
124 methodinfo *methods; /* method table */
126 s4 state; /* current class state */
127 s4 index; /* hierarchy depth (classes) or index */
129 s4 instancesize; /* size of an instance of this class */
131 vftbl_t *vftbl; /* pointer to virtual function table */
133 methodinfo *finalizer; /* finalizer method */
135 u2 innerclasscount; /* number of inner classes */
136 innerclassinfo *innerclass;
138 classref_or_classinfo declaringclass;
139 classref_or_classinfo enclosingclass; /* enclosing class */
140 constant_nameandtype *enclosingmethod; /* enclosing method */
142 utf *packagename; /* full name of the package */
143 utf *sourcefile; /* SourceFile attribute */
144 #if defined(ENABLE_JAVASE)
145 utf *signature; /* Signature attribute */
146 #if defined(ENABLE_ANNOTATIONS)
147 /* All the annotation attributes are NULL (and not a zero length array) */
148 /* if there is nothing. */
149 java_object_t *annotations; /* annotations of this class */
151 java_object_t *method_annotations; /* array of annotations of the methods */
152 java_object_t *method_parameterannotations; /* array of parameter */
153 /* annotations of the methods */
154 java_object_t *method_annotationdefaults; /* array of annotation default */
155 /* values of the methods */
157 java_object_t *field_annotations; /* array of annotations of the fields */
161 classloader_t *classloader; /* NULL for bootstrap classloader */
163 #if defined(ENABLE_JAVASE)
164 # if defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
165 java_object_t *protectiondomain;
166 java_objectarray_t *signers;
172 /* innerclassinfo *************************************************************/
174 struct innerclassinfo {
175 classref_or_classinfo inner_class; /* inner class pointer */
176 classref_or_classinfo outer_class; /* outer class pointer */
177 utf *name; /* innerclass name */
178 s4 flags; /* ACC flags */
182 /* extra_classref **************************************************************
184 for classrefs not occurring within descriptors
186 *******************************************************************************/
188 struct extra_classref {
189 extra_classref *next;
190 constant_classref classref;
194 /* castinfo *******************************************************************/
203 /* global variables ***********************************************************/
205 /* frequently used classes ****************************************************/
207 /* Important system classes. */
209 extern classinfo *class_java_lang_Object;
210 extern classinfo *class_java_lang_Class;
211 extern classinfo *class_java_lang_ClassLoader;
212 extern classinfo *class_java_lang_Cloneable;
213 extern classinfo *class_java_lang_SecurityManager;
214 extern classinfo *class_java_lang_String;
215 extern classinfo *class_java_lang_System;
216 extern classinfo *class_java_lang_Thread;
217 extern classinfo *class_java_lang_ThreadGroup;
218 extern classinfo *class_java_lang_Throwable;
219 extern classinfo *class_java_io_Serializable;
221 /* Important system exceptions. */
223 extern classinfo *class_java_lang_Exception;
224 extern classinfo *class_java_lang_ClassNotFoundException;
225 extern classinfo *class_java_lang_RuntimeException;
227 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
228 extern classinfo *class_java_lang_VMSystem;
229 extern classinfo *class_java_lang_VMThread;
230 extern classinfo *class_java_lang_VMThrowable;
233 #if defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
234 extern classinfo *class_sun_reflect_MagicAccessorImpl;
237 #if defined(ENABLE_JAVASE)
238 extern classinfo *class_java_lang_Void;
241 extern classinfo *class_java_lang_Boolean;
242 extern classinfo *class_java_lang_Byte;
243 extern classinfo *class_java_lang_Character;
244 extern classinfo *class_java_lang_Short;
245 extern classinfo *class_java_lang_Integer;
246 extern classinfo *class_java_lang_Long;
247 extern classinfo *class_java_lang_Float;
248 extern classinfo *class_java_lang_Double;
250 /* some classes which may be used more often */
252 #if defined(ENABLE_JAVASE)
253 extern classinfo *class_java_lang_StackTraceElement;
254 extern classinfo *class_java_lang_reflect_Constructor;
255 extern classinfo *class_java_lang_reflect_Field;
256 extern classinfo *class_java_lang_reflect_Method;
257 extern classinfo *class_java_security_PrivilegedAction;
258 extern classinfo *class_java_util_Vector;
259 extern classinfo *class_java_util_HashMap;
261 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
262 extern classinfo *class_java_lang_reflect_VMConstructor;
263 extern classinfo *class_java_lang_reflect_VMField;
264 extern classinfo *class_java_lang_reflect_VMMethod;
267 extern classinfo *arrayclass_java_lang_Object;
269 # if defined(ENABLE_ANNOTATIONS)
270 extern classinfo *class_sun_reflect_ConstantPool;
271 # if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
272 extern classinfo *class_sun_reflect_annotation_AnnotationParser;
278 /* pseudo classes for the type checker ****************************************/
281 * pseudo_class_Arraystub
282 * (extends Object implements Cloneable, java.io.Serializable)
284 * If two arrays of incompatible component types are merged,
285 * the resulting reference has no accessible components.
286 * The result does, however, implement the interfaces Cloneable
287 * and java.io.Serializable. This pseudo class is used internally
288 * to represent such results. (They are *not* considered arrays!)
292 * This pseudo class is used internally to represent the
297 * This pseudo class is used internally to represent the
298 * the 'uninitialized object' type.
301 extern classinfo *pseudo_class_Arraystub;
302 extern classinfo *pseudo_class_Null;
303 extern classinfo *pseudo_class_New;
306 /* inline functions ***********************************************************/
309 * Returns the classname of the class, where slashes ('/') are
310 * replaced by dots ('.').
312 * @param c class to get name of
315 inline static java_handle_t* class_get_classname(classinfo* c)
319 /* Create a java string. */
321 s = javastring_new_slash_to_dot(c->name);
327 /* class_is_primitive **********************************************************
329 Checks if the given class is a primitive class.
331 *******************************************************************************/
333 static inline bool class_is_primitive(classinfo *c)
335 if (c->flags & ACC_CLASS_PRIMITIVE)
342 /* class_is_anonymousclass *****************************************************
344 Checks if the given class is an anonymous class.
346 *******************************************************************************/
348 static inline bool class_is_anonymousclass(classinfo *c)
350 if (c->flags & ACC_CLASS_ANONYMOUS)
357 /* class_is_array **************************************************************
359 Checks if the given class is an array class.
361 *******************************************************************************/
363 static inline bool class_is_array(classinfo *c)
365 if (!(c->state & CLASS_LINKED))
369 return (c->vftbl->arraydesc != NULL);
373 /* class_is_interface **********************************************************
375 Checks if the given class is an interface.
377 *******************************************************************************/
379 static inline bool class_is_interface(classinfo *c)
381 if (c->flags & ACC_INTERFACE)
388 /* class_is_localclass *********************************************************
390 Checks if the given class is a local class.
392 *******************************************************************************/
394 static inline bool class_is_localclass(classinfo *c)
396 if ((c->enclosingmethod != NULL) && !class_is_anonymousclass(c))
403 /* class_is_memberclass ********************************************************
405 Checks if the given class is a member class.
407 *******************************************************************************/
409 static inline bool class_is_memberclass(classinfo *c)
411 if (c->flags & ACC_CLASS_MEMBER)
418 /* class_get_classloader *******************************************************
420 Return the classloader of the given class.
422 *******************************************************************************/
424 static inline classloader_t *class_get_classloader(classinfo *c)
430 /* The classloader may be NULL. */
436 /* class_get_superclass ********************************************************
438 Return the super class of the given class.
440 *******************************************************************************/
442 static inline classinfo *class_get_superclass(classinfo *c)
444 /* For interfaces we return NULL. */
446 if (c->flags & ACC_INTERFACE)
449 /* For java/lang/Object, primitive-type and Void classes c->super
450 is NULL and we return NULL. */
456 /* function prototypes ********************************************************/
458 classinfo *class_create_classinfo(utf *u);
459 void class_postset_header_vftbl(void);
460 classinfo *class_define(utf *name, classloader_t *cl, int32_t length, uint8_t *data, java_handle_t *pd);
461 void class_set_packagename(classinfo *c);
463 bool class_load_attributes(classbuffer *cb);
465 /* retrieve constantpool element */
466 voidptr class_getconstant(classinfo *class, u4 pos, u4 ctype);
467 voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype);
469 /* frees all resources used by the class */
470 void class_free(classinfo *);
472 /* return an array class with the given component class */
473 classinfo *class_array_of(classinfo *component,bool link);
475 /* return an array class with the given dimension and element class */
476 classinfo *class_multiarray_of(s4 dim, classinfo *element,bool link);
478 /* return a classref for the given class name */
479 /* (does a linear search!) */
480 constant_classref *class_lookup_classref(classinfo *cls,utf *name);
482 /* return a classref for the given class name */
483 /* (does a linear search!) */
484 constant_classref *class_get_classref(classinfo *cls,utf *name);
486 /* return a classref to the class itself */
487 /* (does a linear search!) */
488 constant_classref *class_get_self_classref(classinfo *cls);
490 /* return a classref for an array with the given dimension of with the */
491 /* given component type */
492 constant_classref *class_get_classref_multiarray_of(s4 dim,constant_classref *ref);
494 /* return a classref for the component type of the given array type */
495 constant_classref *class_get_classref_component_of(constant_classref *ref);
497 /* get a class' field by name and descriptor */
498 fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc);
500 /* search 'classinfo'-structure for a field with the specified name */
501 fieldinfo *class_findfield_by_name(classinfo *c, utf *name);
502 s4 class_findfield_index_by_name(classinfo *c, utf *name);
504 /* search class for a field */
505 fieldinfo *class_resolvefield(classinfo *c, utf *name, utf *desc, classinfo *referer, bool throwexception);
507 /* search for a method with a specified name and descriptor */
508 methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc);
509 methodinfo *class_resolvemethod(classinfo *c, utf *name, utf *dest);
510 methodinfo *class_resolveclassmethod(classinfo *c, utf *name, utf *dest, classinfo *referer, bool throwexception);
511 methodinfo *class_resolveinterfacemethod(classinfo *c, utf *name, utf *dest, classinfo *referer, bool throwexception);
513 bool class_issubclass(classinfo *sub, classinfo *super);
514 bool class_isanysubclass(classinfo *sub, classinfo *super);
515 bool class_is_assignable_from(classinfo *to, classinfo *from);
516 bool class_is_instance(classinfo *c, java_handle_t *h);
518 classloader_t *class_get_classloader(classinfo *c);
519 classinfo *class_get_superclass(classinfo *c);
520 classinfo *class_get_componenttype(classinfo *c);
521 java_handle_objectarray_t *class_get_declaredclasses(classinfo *c, bool publicOnly);
522 java_handle_objectarray_t *class_get_declaredconstructors(classinfo *c, bool publicOnly);
523 java_handle_objectarray_t *class_get_declaredfields(classinfo *c, bool publicOnly);
524 java_handle_objectarray_t *class_get_declaredmethods(classinfo *c, bool publicOnly);
525 classinfo *class_get_declaringclass(classinfo *c);
526 classinfo *class_get_enclosingclass(classinfo *c);
527 java_handle_t* class_get_enclosingconstructor(classinfo *c);
528 methodinfo* class_get_enclosingmethod_raw(classinfo *c);
529 java_handle_t* class_get_enclosingmethod(classinfo *c);
530 java_handle_objectarray_t *class_get_interfaces(classinfo *c);
531 java_handle_bytearray_t *class_get_annotations(classinfo *c);
532 int32_t class_get_modifiers(classinfo *c, bool ignoreInnerClassesAttrib);
533 java_handle_t *class_get_name(classinfo *c);
535 #if defined(ENABLE_JAVASE)
536 utf *class_get_signature(classinfo *c);
539 /* some debugging functions */
542 void class_printflags(classinfo *c);
543 void class_print(classinfo *c);
544 void class_println(classinfo *c);
545 void class_classref_print(constant_classref *cr);
546 void class_classref_println(constant_classref *cr);
547 void class_classref_or_classinfo_print(classref_or_classinfo c);
548 void class_classref_or_classinfo_println(classref_or_classinfo c);
552 void class_showmethods(classinfo *c);
553 void class_showconstantpool(classinfo *c);
555 #endif /* _CLASS_H */
559 * These are local overrides for various environment variables in Emacs.
560 * Please do not remove this and leave it at the end of the file, where
561 * Emacs will automagically detect them.
562 * ---------------------------------------------------------------------
565 * indent-tabs-mode: t