1 /* src/vmcore/class.h - class related functions header
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
8 This file is part of CACAO.
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.
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.
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
31 /* forward typedefs ***********************************************************/
33 typedef struct classinfo classinfo;
34 typedef struct innerclassinfo innerclassinfo;
35 typedef struct extra_classref extra_classref;
36 typedef struct castinfo castinfo;
45 #include "toolbox/list.h"
47 #include "vm/global.h"
49 #if defined(ENABLE_JAVASE)
50 # include "vmcore/annotation.h"
53 #include "vmcore/field.h"
54 #include "vmcore/linker.h"
55 #include "vmcore/loader.h"
56 #include "vmcore/method.h"
57 #include "vmcore/references.h"
58 #include "vmcore/utf8.h"
61 /* class state defines ********************************************************/
63 #define CLASS_LOADING 0x0001
64 #define CLASS_LOADED 0x0002
65 #define CLASS_LINKING 0x0004
66 #define CLASS_LINKED 0x0008
67 #define CLASS_INITIALIZING 0x0010
68 #define CLASS_INITIALIZED 0x0020
69 #define CLASS_ERROR 0x0040
72 /* some macros ****************************************************************/
74 #define CLASS_IS_OR_ALMOST_INITIALIZED(c) \
75 (((c)->state & CLASS_INITIALIZING) || ((c)->state & CLASS_INITIALIZED))
78 /* classinfo ******************************************************************/
80 /* We define this dummy structure of java_lang_Class so we can
81 bootstrap cacaoh without needing a java_lang_Class.h file. Whether
82 the size of the dummy structure is big enough is checked during
83 runtime in vm_create. */
87 #if defined(WITH_CLASSPATH_GNU)
89 #elif defined(WITH_CLASSPATH_SUN)
91 #elif defined(WITH_CLASSPATH_CLDC1_1)
94 # error unknown classpath configuration
96 } dummy_java_lang_Class;
98 struct classinfo { /* class structure */
99 dummy_java_lang_Class object;
101 s4 flags; /* ACC flags */
102 utf *name; /* class name */
104 s4 cpcount; /* number of entries in constant pool */
105 u1 *cptags; /* constant pool tags */
106 voidptr *cpinfos; /* pointer to constant pool info structures */
108 s4 classrefcount; /* number of symbolic class references */
109 constant_classref *classrefs; /* table of symbolic class references */
110 extra_classref *extclassrefs; /* additional classrefs */
111 s4 parseddescsize; /* size of the parsed descriptors block */
112 u1 *parseddescs; /* parsed descriptors */
114 classinfo *super; /* super class */
115 classinfo *sub; /* sub class pointer */
116 classinfo *nextsub; /* pointer to next class in sub class list */
118 int32_t interfacescount; /* number of interfaces */
119 classinfo **interfaces; /* super interfaces */
121 int32_t fieldscount; /* number of fields */
122 fieldinfo *fields; /* field table */
124 int32_t methodscount; /* number of methods */
125 methodinfo *methods; /* method table */
127 s4 state; /* current class state */
128 s4 index; /* hierarchy depth (classes) or index */
130 s4 instancesize; /* size of an instance of this class */
132 vftbl_t *vftbl; /* pointer to virtual function table */
134 methodinfo *finalizer; /* finalizer method */
136 u2 innerclasscount; /* number of inner classes */
137 innerclassinfo *innerclass;
139 classref_or_classinfo declaringclass;
140 classref_or_classinfo enclosingclass; /* enclosing class */
141 constant_nameandtype *enclosingmethod; /* enclosing method */
143 utf *packagename; /* full name of the package */
144 utf *sourcefile; /* SourceFile attribute */
145 #if defined(ENABLE_JAVASE)
146 utf *signature; /* Signature attribute */
147 #if defined(ENABLE_ANNOTATIONS)
148 /* All the annotation attributes are NULL (and not a zero length array) */
149 /* if there is nothing. */
150 java_object_t *annotations; /* annotations of this class */
152 java_object_t *method_annotations; /* array of annotations of the methods */
153 java_object_t *method_parameterannotations; /* array of parameter */
154 /* annotations of the methods */
155 java_object_t *method_annotationdefaults; /* array of annotation default */
156 /* values of the methods */
158 java_object_t *field_annotations; /* array of annotations of the fields */
162 classloader *classloader; /* NULL for bootstrap classloader */
164 #if defined(ENABLE_JAVASE)
165 # if defined(WITH_CLASSPATH_SUN)
166 java_object_t *protectiondomain;
167 java_objectarray_t *signers;
173 /* innerclassinfo *************************************************************/
175 struct innerclassinfo {
176 classref_or_classinfo inner_class; /* inner class pointer */
177 classref_or_classinfo outer_class; /* outer class pointer */
178 utf *name; /* innerclass name */
179 s4 flags; /* ACC flags */
183 /* extra_classref **************************************************************
185 for classrefs not occurring within descriptors
187 *******************************************************************************/
189 struct extra_classref {
190 extra_classref *next;
191 constant_classref classref;
195 /* castinfo *******************************************************************/
204 /* global variables ***********************************************************/
206 /* frequently used classes ****************************************************/
208 /* important system classes */
210 extern classinfo *class_java_lang_Object;
211 extern classinfo *class_java_lang_Class;
212 extern classinfo *class_java_lang_ClassLoader;
213 extern classinfo *class_java_lang_Cloneable;
214 extern classinfo *class_java_lang_SecurityManager;
215 extern classinfo *class_java_lang_String;
216 extern classinfo *class_java_lang_System;
217 extern classinfo *class_java_lang_Thread;
218 extern classinfo *class_java_lang_ThreadGroup;
219 extern classinfo *class_java_lang_Throwable;
220 extern classinfo *class_java_io_Serializable;
222 #if defined(WITH_CLASSPATH_GNU)
223 extern classinfo *class_java_lang_VMSystem;
224 extern classinfo *class_java_lang_VMThread;
225 extern classinfo *class_java_lang_VMThrowable;
228 #if defined(WITH_CLASSPATH_SUN)
229 extern classinfo *class_sun_reflect_MagicAccessorImpl;
232 #if defined(ENABLE_JAVASE)
233 extern classinfo *class_java_lang_Void;
236 extern classinfo *class_java_lang_Boolean;
237 extern classinfo *class_java_lang_Byte;
238 extern classinfo *class_java_lang_Character;
239 extern classinfo *class_java_lang_Short;
240 extern classinfo *class_java_lang_Integer;
241 extern classinfo *class_java_lang_Long;
242 extern classinfo *class_java_lang_Float;
243 extern classinfo *class_java_lang_Double;
245 /* some classes which may be used more often */
247 #if defined(ENABLE_JAVASE)
248 extern classinfo *class_java_lang_StackTraceElement;
249 extern classinfo *class_java_lang_reflect_Constructor;
250 extern classinfo *class_java_lang_reflect_Field;
251 extern classinfo *class_java_lang_reflect_Method;
252 extern classinfo *class_java_security_PrivilegedAction;
253 extern classinfo *class_java_util_Vector;
255 extern classinfo *arrayclass_java_lang_Object;
257 # if defined(ENABLE_ANNOTATIONS)
258 extern classinfo *class_sun_reflect_ConstantPool;
259 # if defined(WITH_CLASSPATH_GNU)
260 extern classinfo *class_sun_reflect_annotation_AnnotationParser;
266 /* pseudo classes for the type checker ****************************************/
269 * pseudo_class_Arraystub
270 * (extends Object implements Cloneable, java.io.Serializable)
272 * If two arrays of incompatible component types are merged,
273 * the resulting reference has no accessible components.
274 * The result does, however, implement the interfaces Cloneable
275 * and java.io.Serializable. This pseudo class is used internally
276 * to represent such results. (They are *not* considered arrays!)
280 * This pseudo class is used internally to represent the
285 * This pseudo class is used internally to represent the
286 * the 'uninitialized object' type.
289 extern classinfo *pseudo_class_Arraystub;
290 extern classinfo *pseudo_class_Null;
291 extern classinfo *pseudo_class_New;
294 /* inline functions ***********************************************************/
296 /* class_is_primitive **********************************************************
298 Checks if the given class is a primitive class.
300 *******************************************************************************/
302 static inline bool class_is_primitive(classinfo *c)
304 if (c->flags & ACC_CLASS_PRIMITIVE)
311 /* class_is_anonymousclass *****************************************************
313 Checks if the given class is an anonymous class.
315 *******************************************************************************/
317 static inline bool class_is_anonymousclass(classinfo *c)
319 if (c->flags & ACC_CLASS_ANONYMOUS)
326 /* class_is_array **************************************************************
328 Checks if the given class is an array class.
330 *******************************************************************************/
332 static inline bool class_is_array(classinfo *c)
334 if (!(c->state & CLASS_LINKED))
338 return (c->vftbl->arraydesc != NULL);
342 /* class_is_interface **********************************************************
344 Checks if the given class is an interface.
346 *******************************************************************************/
348 static inline bool class_is_interface(classinfo *c)
350 if (c->flags & ACC_INTERFACE)
357 /* class_is_localclass *********************************************************
359 Checks if the given class is a local class.
361 *******************************************************************************/
363 static inline bool class_is_localclass(classinfo *c)
365 if ((c->enclosingmethod != NULL) && !class_is_anonymousclass(c))
372 /* class_is_memberclass ********************************************************
374 Checks if the given class is a member class.
376 *******************************************************************************/
378 static inline bool class_is_memberclass(classinfo *c)
380 if (c->flags & ACC_CLASS_MEMBER)
387 /* class_get_classloader *******************************************************
389 Return the classloader of the given class.
391 *******************************************************************************/
393 static inline classloader *class_get_classloader(classinfo *c)
399 /* The classloader may be NULL. */
405 /* class_get_superclass ********************************************************
407 Return the super class of the given class.
409 *******************************************************************************/
411 static inline classinfo *class_get_superclass(classinfo *c)
413 /* For interfaces we return NULL. */
415 if (c->flags & ACC_INTERFACE)
418 /* For java/lang/Object, primitive-type and Void classes c->super
419 is NULL and we return NULL. */
425 /* function prototypes ********************************************************/
427 classinfo *class_create_classinfo(utf *u);
428 void class_postset_header_vftbl(void);
429 classinfo *class_define(utf *name, classloader *cl, int32_t length, const uint8_t *data, java_handle_t *pd);
430 void class_set_packagename(classinfo *c);
432 bool class_load_attributes(classbuffer *cb);
434 /* retrieve constantpool element */
435 voidptr class_getconstant(classinfo *class, u4 pos, u4 ctype);
436 voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype);
438 /* frees all resources used by the class */
439 void class_free(classinfo *);
441 /* return an array class with the given component class */
442 classinfo *class_array_of(classinfo *component,bool link);
444 /* return an array class with the given dimension and element class */
445 classinfo *class_multiarray_of(s4 dim, classinfo *element,bool link);
447 /* return a classref for the given class name */
448 /* (does a linear search!) */
449 constant_classref *class_lookup_classref(classinfo *cls,utf *name);
451 /* return a classref for the given class name */
452 /* (does a linear search!) */
453 constant_classref *class_get_classref(classinfo *cls,utf *name);
455 /* return a classref to the class itself */
456 /* (does a linear search!) */
457 constant_classref *class_get_self_classref(classinfo *cls);
459 /* return a classref for an array with the given dimension of with the */
460 /* given component type */
461 constant_classref *class_get_classref_multiarray_of(s4 dim,constant_classref *ref);
463 /* return a classref for the component type of the given array type */
464 constant_classref *class_get_classref_component_of(constant_classref *ref);
466 /* get a class' field by name and descriptor */
467 fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc);
469 /* search 'classinfo'-structure for a field with the specified name */
470 fieldinfo *class_findfield_by_name(classinfo *c, utf *name);
471 s4 class_findfield_index_by_name(classinfo *c, utf *name);
473 /* search class for a field */
474 fieldinfo *class_resolvefield(classinfo *c, utf *name, utf *desc, classinfo *referer, bool throwexception);
476 /* search for a method with a specified name and descriptor */
477 methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc);
478 methodinfo *class_resolvemethod(classinfo *c, utf *name, utf *dest);
479 methodinfo *class_resolveclassmethod(classinfo *c, utf *name, utf *dest, classinfo *referer, bool throwexception);
480 methodinfo *class_resolveinterfacemethod(classinfo *c, utf *name, utf *dest, classinfo *referer, bool throwexception);
482 bool class_issubclass(classinfo *sub, classinfo *super);
483 bool class_isanysubclass(classinfo *sub, classinfo *super);
485 bool class_is_primitive(classinfo *c);
486 bool class_is_anonymousclass(classinfo *c);
487 bool class_is_array(classinfo *c);
488 bool class_is_interface(classinfo *c);
489 bool class_is_localclass(classinfo *c);
490 bool class_is_memberclass(classinfo *c);
492 classloader *class_get_classloader(classinfo *c);
493 classinfo *class_get_superclass(classinfo *c);
494 classinfo *class_get_componenttype(classinfo *c);
495 java_handle_objectarray_t *class_get_declaredclasses(classinfo *c, bool publicOnly);
496 classinfo *class_get_declaringclass(classinfo *c);
497 classinfo *class_get_enclosingclass(classinfo *c);
498 java_handle_objectarray_t *class_get_interfaces(classinfo *c);
499 java_handle_bytearray_t *class_get_annotations(classinfo *c);
500 int32_t class_get_modifiers(classinfo *c, bool ignoreInnerClassesAttrib);
502 #if defined(ENABLE_JAVASE)
503 utf *class_get_signature(classinfo *c);
506 /* some debugging functions */
509 void class_printflags(classinfo *c);
510 void class_print(classinfo *c);
511 void class_println(classinfo *c);
512 void class_classref_print(constant_classref *cr);
513 void class_classref_println(constant_classref *cr);
514 void class_classref_or_classinfo_print(classref_or_classinfo c);
515 void class_classref_or_classinfo_println(classref_or_classinfo c);
519 void class_showmethods(classinfo *c);
520 void class_showconstantpool(classinfo *c);
522 #endif /* _CLASS_H */
526 * These are local overrides for various environment variables in Emacs.
527 * Please do not remove this and leave it at the end of the file, where
528 * Emacs will automagically detect them.
529 * ---------------------------------------------------------------------
532 * indent-tabs-mode: t