1 /* nat/VMClass.c - java/lang/Class
3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
5 M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
6 P. Tomsich, J. Wenninger
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., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Roman Obermaiser
29 Changes: Joseph Wenninger
31 $Id: VMClass.c 1323 2004-07-18 21:42:11Z motse $
44 #include "toolbox/logging.h"
45 #include "toolbox/memory.h"
46 #include "java_lang_Object.h"
47 #include "java_lang_Class.h"
48 #include "java_lang_ClassLoader.h"
49 #include "java_security_ProtectionDomain.h"
50 #include "java_lang_reflect_Constructor.h"
51 #include "java_lang_reflect_Field.h"
52 #include "java_lang_reflect_Method.h"
53 #include "java_lang_Throwable.h" /* needed for java_lang_VMClass.h */
54 #include "java_lang_VMClass.h"
57 /* for selecting public members */
58 #define MEMBER_PUBLIC 0
62 * Class: java_lang_VMClass
64 * Signature: (Ljava/lang/String;)Ljava/lang/Class;
66 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_forName(JNIEnv *env, jclass clazz, java_lang_String *s)
71 /* illegal argument */
75 /* create utf string in which '.' is replaced by '/' */
76 u = javastring_toutf(s, true);
78 /* create a new class, ... */
85 xclass = (*exceptionptr)->vftbl->class;
87 /* if the exception is a NoClassDefFoundError, we replace it with a
88 ClassNotFoundException, otherwise return the exception */
90 if (xclass == class_get(utf_new_char(string_java_lang_NoClassDefFoundError))) {
91 /* clear exceptionptr, because builtin_new checks for
92 ExceptionInInitializerError */
96 new_exception_javastring(string_java_lang_ClassNotFoundException, s);
106 /* ...and initialize it */
110 use_class_as_object(c);
112 return (java_lang_Class *) c;
117 * Class: java_lang_VMClass
118 * Method: getClassLoader
119 * Signature: ()Ljava/lang/ClassLoader;
121 JNIEXPORT java_lang_ClassLoader* JNICALL Java_java_lang_VMClass_getClassLoader(JNIEnv *env, jclass clazz, java_lang_Class *that)
123 return ((classinfo*)that)->classloader;
124 /* init_systemclassloader();
126 return SystemClassLoader;*/
131 * Class: java_lang_VMClass
132 * Method: getComponentType
133 * Signature: ()Ljava/lang/Class;
135 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getComponentType(JNIEnv *env, jclass clazz,java_lang_Class *that)
137 classinfo *thisclass = (classinfo *) that;
139 arraydescriptor *desc;
141 if ((desc = thisclass->vftbl->arraydesc) != NULL) {
142 if (desc->arraytype == ARRAYTYPE_OBJECT)
143 c = desc->componentvftbl->class;
145 c = primitivetype_table[desc->arraytype].class_primitive;
148 use_class_as_object(c);
151 return (java_lang_Class *) c;
156 * Class: java_lang_VMClass
157 * Method: getDeclaredConstructors
158 * Signature: (Z)[Ljava/lang/reflect/Constructor;
160 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredConstructors(JNIEnv *env, jclass clazz,
161 struct java_lang_Class *that, s4 public_only)
164 classinfo *c = (classinfo *) that;
165 java_objectheader *o;
166 classinfo *class_constructor;
167 java_objectarray *array_constructor; /* result: array of Method-objects */
168 java_objectarray *exceptiontypes; /* the exceptions thrown by the method */
169 methodinfo *m; /* the current method to be represented */
170 int public_methods = 0; /* number of public methods of the class */
173 utf *utf_constr = utf_new_char("<init>");
175 /* determine number of constructors */
176 for (i = 0; i < c->methodscount; i++)
177 if (((c->methods[i].flags & ACC_PUBLIC) || !public_only) &&
178 (c->methods[i].name == utf_constr))
181 class_constructor = class_new(utf_new_char("java/lang/reflect/Constructor"));
183 if (!class_constructor->loaded)
184 class_load(class_constructor);
186 if (!class_constructor->linked)
187 class_link(class_constructor);
189 array_constructor = builtin_anewarray(public_methods, class_constructor);
191 if (!array_constructor)
194 for (i = 0; i < c->methodscount; i++)
195 if ((c->methods[i].flags & ACC_PUBLIC) || !public_only){
197 if (m->name!=utf_constr)
200 o = native_new_and_init(class_constructor);
201 array_constructor->data[pos++] = o;
203 /* array of exceptions declared to be thrown, information not available !! */
204 exceptiontypes = builtin_anewarray(0, class_java_lang_Class);
206 /* class_showconstantpool(class_constructor);*/
207 /* initialize instance fields */
208 /* ((java_lang_reflect_Constructor*)o)->flag=(m->flags & (ACC_PRIVATE | ACC_PUBLIC | ACC_PROTECTED));*/
209 setfield_critical(class_constructor,o,"clazz", "Ljava/lang/Class;", jobject, (jobject) c /*this*/);
210 setfield_critical(class_constructor,o,"slot", "I", jint, i);
211 /* setfield_critical(class_constructor,o,"flag", "I", jint, (m->flags & (ACC_PRIVATE |
212 ACC_PUBLIC | ACC_PROTECTED))); */
213 setfield_critical(class_constructor,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes);
214 setfield_critical(class_constructor,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) get_parametertypes(m));
217 return array_constructor;
222 * Class: java_lang_VMClass
223 * Method: getDeclaredClasses
224 * Signature: (Z)[Ljava/lang/Class;
226 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredClasses(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 publicOnly)
228 #if defined(__GNUC__)
229 #warning fix the public only case
231 classinfo *c = (classinfo *) that;
232 int pos = 0; /* current declared class */
233 int declaredclasscount = 0; /* number of declared classes */
234 java_objectarray *result; /* array of declared classes */
235 int notPublicOnly = !publicOnly;
241 /*printf("PublicOnly: %d\n",publicOnly);*/
242 if (!Java_java_lang_VMClass_isPrimitive(env, clazz, (java_lang_Class *) c) && (c->name->text[0] != '[')) {
243 /* determine number of declared classes */
244 for (i = 0; i < c->innerclasscount; i++) {
245 if ( (c->innerclass[i].outer_class == c) && (notPublicOnly || (c->innerclass[i].flags & ACC_PUBLIC)))
246 /* outer class is this class */
247 declaredclasscount++;
251 /*class_showmethods(c); */
253 result = builtin_anewarray(declaredclasscount, class_java_lang_Class);
255 for (i = 0; i < c->innerclasscount; i++) {
256 classinfo *inner = c->innerclass[i].inner_class;
257 classinfo *outer = c->innerclass[i].outer_class;
259 if ((outer == c) && (notPublicOnly || (inner->flags & ACC_PUBLIC))) {
260 /* outer class is this class, store innerclass in array */
261 use_class_as_object(inner);
262 result->data[pos++] = (java_objectheader *) inner;
271 * Class: java/lang/Class
272 * Method: getDeclaringClass
273 * Signature: ()Ljava/lang/Class;
275 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getDeclaringClass(JNIEnv *env, jclass clazz, struct java_lang_Class *that)
277 #if defined(__GNUC__)
280 classinfo *c = (classinfo *) that;
282 if (that && !Java_java_lang_VMClass_isPrimitive(env, clazz,that) && (c->name->text[0] != '[')) {
285 if (c->innerclasscount == 0) /* no innerclasses exist */
288 for (i = 0; i < c->innerclasscount; i++) {
289 classinfo *inner = c->innerclass[i].inner_class;
290 classinfo *outer = c->innerclass[i].outer_class;
293 /* innerclass is this class */
294 use_class_as_object(outer);
295 return (java_lang_Class *) outer;
300 /* return NULL for arrayclasses and primitive classes */
305 java_lang_reflect_Field* cacao_getField0(JNIEnv *env, java_lang_Class *that, java_lang_String *name, s4 public_only)
308 classinfo *fieldtype;
309 fieldinfo *f; /* the field to be represented */
310 java_lang_reflect_Field *o; /* result: field-object */
311 utf *desc; /* the fielddescriptor */
314 /* create Field object */
315 /* c = (classinfo *) loader_load(utf_new_char("java/lang/reflect/Field")); */
316 c = class_new(utf_new_char("java/lang/reflect/Field"));
317 o = (java_lang_reflect_Field *) native_new_and_init(c);
319 /* get fieldinfo entry */
320 idx = class_findfield_index_approx((classinfo *) that, javastring_toutf(name, false));
323 *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
327 f = &(((classinfo *) that)->fields[idx]);
329 if (public_only && !(f->flags & ACC_PUBLIC)) {
330 /* field is not public and public only had been requested*/
331 *exceptionptr = new_exception(string_java_lang_NoSuchFieldException);
335 desc = f->descriptor;
336 fieldtype = class_from_descriptor(desc->text, utf_end(desc), NULL, CLASSLOAD_LOAD);
340 /* initialize instance fields */
341 setfield_critical(c,o,"declaringClass", "Ljava/lang/Class;", jobject, (jobject) that /*this*/);
342 /* ((java_lang_reflect_Field*)(o))->flag=f->flags;*/
343 /* save type in slot-field for faster processing */
344 /* setfield_critical(c,o,"flag", "I", jint, (jint) f->flags); */
346 setfield_critical(c,o,"slot", "I", jint, (jint) idx);
347 setfield_critical(c,o,"name", "Ljava/lang/String;", jstring, (jstring) name);
348 /*setfield_critical(c,o,"type", "Ljava/lang/Class;", jclass, fieldtype);*/
358 * Class: java_lang_VMClass
359 * Method: getDeclaredFields
360 * Signature: (Z)[Ljava/lang/reflect/Field;
362 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredFields(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 public_only)
364 classinfo *c = (classinfo *) that;
365 classinfo *class_field;
366 java_objectarray *array_field; /* result: array of field-objects */
367 int public_fields = 0; /* number of elements in field-array */
371 /* determine number of fields */
372 for (i = 0; i < c->fieldscount; i++)
373 if ((c->fields[i].flags & ACC_PUBLIC) || (!public_only))
376 /* class_field = loader_load(utf_new_char("java/lang/reflect/Field")); */
377 class_field = class_new(utf_new_char("java/lang/reflect/Field"));
382 /* create array of fields */
383 array_field = builtin_anewarray(public_fields, class_field);
385 /* creation of array failed */
389 /* get the fields and store in the array */
390 for (i = 0; i < c->fieldscount; i++)
391 if ( (c->fields[i].flags & ACC_PUBLIC) || (!public_only))
392 array_field->data[pos++] =
393 (java_objectheader *) cacao_getField0(env,
394 that, (java_lang_String *) javastring_new(c->fields[i].name),public_only);
400 * Class: java/lang/Class
401 * Method: getInterfaces
402 * Signature: ()[Ljava/lang/Class;
404 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getInterfaces(JNIEnv *env, jclass clazz, java_lang_Class *that)
406 classinfo *c = (classinfo *) that;
410 a = builtin_anewarray(c->interfacescount, class_java_lang_Class);
415 for (i = 0; i < c->interfacescount; i++) {
416 use_class_as_object(c->interfaces[i]);
418 a->data[i] = (java_objectheader *) c->interfaces[i];
425 java_lang_reflect_Method* cacao_getMethod0(JNIEnv *env, java_lang_Class *that, java_lang_String *name, java_objectarray *types, s4 which)
428 classinfo *clazz = (classinfo *) that;
429 java_lang_reflect_Method* o; /* result: Method-object */
430 java_objectarray *exceptiontypes; /* the exceptions thrown by the method */
431 methodinfo *m; /* the method to be represented */
433 /* c = (classinfo *) loader_load(utf_new_char("java/lang/reflect/Method")); */
434 c = class_new(utf_new_char("java/lang/reflect/Method"));
435 o = (java_lang_reflect_Method *) native_new_and_init(c);
437 /* find the method */
438 m = class_resolvemethod_approx(clazz,
439 javastring_toutf(name, false),
440 create_methodsig(types,0)
443 if (!m || (which == MEMBER_PUBLIC && !(m->flags & ACC_PUBLIC))) {
444 /* no apropriate method was found */
445 *exceptionptr = new_exception(string_java_lang_NoSuchMethodException);
449 /* array of exceptions declared to be thrown, information not available !! */
450 exceptiontypes = builtin_anewarray(0, class_java_lang_Class);
452 /* initialize instance fields */
453 setfield_critical(c,o,"clazz", "Ljava/lang/Class;", jobject, (jobject) clazz /*this*/);
454 setfield_critical(c,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) types);
455 setfield_critical(c,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes);
456 setfield_critical(c,o,"name", "Ljava/lang/String;", jstring, javastring_new(m->name));
457 setfield_critical(c,o,"modifiers", "I", jint, m->flags);
458 setfield_critical(c,o,"slot", "I", jint, 0);
459 setfield_critical(c,o,"returnType", "Ljava/lang/Class;", jclass, get_returntype(m));
466 * Class: java_lang_VMClass
467 * Method: getDeclaredMethods
468 * Signature: (Z)[Ljava/lang/reflect/Method;
470 JNIEXPORT java_objectarray* JNICALL Java_java_lang_VMClass_getDeclaredMethods(JNIEnv *env, jclass clazz, java_lang_Class *that, s4 public_only)
472 classinfo *c = (classinfo *) that;
473 java_objectheader *o;
474 classinfo *class_method;
475 java_objectarray *array_method; /* result: array of Method-objects */
476 java_objectarray *exceptiontypes; /* the exceptions thrown by the method */
477 methodinfo *m; /* the current method to be represented */
478 int public_methods = 0; /* number of public methods of the class */
481 utf *utf_constr=utf_new_char("<init>");
482 utf *utf_clinit=utf_new_char("<clinit>");
484 /* class_method = (classinfo*) loader_load(utf_new_char ("java/lang/reflect/Method")); */
485 class_method = class_new(utf_new_char("java/lang/reflect/Method"));
490 /* JOWENN: array classes do not declare methods according to mauve test. It should be considered, if
491 we should return to my old clone method overriding instead of declaring it as a member function */
492 if (Java_java_lang_VMClass_isArray(env, clazz,that)) {
493 return builtin_anewarray(0, class_method);
497 /* determine number of methods */
498 for (i = 0; i < c->methodscount; i++)
499 if ((((c->methods[i].flags & ACC_PUBLIC)) || (!public_only)) &&
501 ((c->methods[i].name==utf_constr) ||
502 (c->methods[i].name==utf_clinit) )
506 class_showmethods(class_method);
511 array_method = builtin_anewarray(public_methods, class_method);
516 for (i = 0; i < c->methodscount; i++)
517 if (((c->methods[i].flags & ACC_PUBLIC) || (!public_only)) &&
519 ((c->methods[i].name==utf_constr) ||
520 (c->methods[i].name==utf_clinit) )
524 o = native_new_and_init(class_method);
525 array_method->data[pos++] = o;
527 /* array of exceptions declared to be thrown, information not available !! */
528 exceptiontypes = builtin_anewarray (0, class_java_lang_Class);
531 /* initialize instance fields */
532 /* ((java_lang_reflect_Method*)o)->flag=(m->flags &
533 (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED | ACC_ABSTRACT | ACC_STATIC | ACC_FINAL |
534 ACC_SYNCHRONIZED | ACC_NATIVE | ACC_STRICT)
536 setfield_critical(class_method,o,"declaringClass", "Ljava/lang/Class;", jobject, (jobject) c /*this*/);
537 setfield_critical(class_method,o,"name", "Ljava/lang/String;", jstring, javastring_new(m->name));
538 /* setfield_critical(class_method,o,"flag", "I", jint, (m->flags &
539 (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED | ACC_ABSTRACT | ACC_STATIC | ACC_FINAL |
540 ACC_SYNCHRONIZED | ACC_NATIVE | ACC_STRICT)));*/
541 setfield_critical(class_method,o,"slot", "I", jint, i);
542 /* setfield_critical(class_method,o,"returnType", "Ljava/lang/Class;", jclass, get_returntype(m));
543 setfield_critical(class_method,o,"exceptionTypes", "[Ljava/lang/Class;", jobject, (jobject) exceptiontypes);
544 setfield_critical(class_method,o,"parameterTypes", "[Ljava/lang/Class;", jobject, (jobject) get_parametertypes(m));*/
552 * Class: java/lang/Class
553 * Method: getModifiers
556 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_getModifiers(JNIEnv *env, jclass clazz, java_lang_Class *that)
558 classinfo *c = (classinfo *) that;
564 * Class: java/lang/Class
566 * Signature: ()Ljava/lang/String;
568 JNIEXPORT java_lang_String* JNICALL Java_java_lang_VMClass_getName(JNIEnv *env, jclass clazz, java_lang_Class* that)
571 classinfo *c = (classinfo *) that;
572 java_lang_String *s = (java_lang_String *) javastring_new(c->name);
577 /* return string where '/' is replaced by '.' */
578 for (i = 0; i < s->value->header.size; i++) {
579 if (s->value->data[i] == '/')
580 s->value->data[i] = '.';
589 * Class: java/lang/VMClass
590 * Method: getBeautifiedName
591 * Signature: (Ljava/lang/Class;)Ljava/lang/String;
593 JNIEXPORT java_lang_String* JNICALL Java_java_lang_VMClass_getBeautifiedName(JNIEnv *env, jclass clazz, java_lang_Class *par1)
596 classinfo *c = (classinfo *) (par1);
598 char *utf__ptr = c->name->text; /* current position in utf-text */
599 char **utf_ptr = &utf__ptr;
600 char *desc_end = utf_end(c->name); /* points behind utf string */
607 log_text("Java_java_lang_VMClass_getBeautifiedName");
608 utf_display(c->name);
609 log_text("beautifying");
612 while ( *utf_ptr != desc_end ) {
613 if (utf_nextu2(utf_ptr)=='[') dimCnt++;
616 utf__ptr = (*utf_ptr) - 1;
622 utf_display(c->name);
626 if (((*utf_ptr) + 1) == desc_end) {
627 for (i = 0; i < PRIMITIVETYPE_COUNT; i++) {
628 if (primitivetype_table[i].typesig == (*utf__ptr)) {
629 len = dimCnt * 2 + strlen(primitivetype_table[i].name);
630 str = MNEW(char, len + 1);
631 strcpy(str, primitivetype_table[i].name);
639 len = dimCnt + strlen(c->name->text) - 2;
640 str = MNEW(char, len + 1);
641 strncpy(str, ++utf__ptr, len - 2 * dimCnt);
643 len = strlen(c->name->text);
644 str = MNEW(char, len + 1);
645 strncpy(str, utf__ptr, len);
650 dimCnt = len - 2 * dimCnt;
652 for (i = len - 1; i >= dimCnt; i = i - 2) {
657 s = javastring_new(utf_new_char(str));
658 MFREE(str, char, len + 1);
662 /* return string where '/' is replaced by '.' */
663 for (i = 0; i < s->value->header.size; i++) {
664 if (s->value->data[i] == '/') s->value->data[i] = '.';
673 * Class: java/lang/Class
674 * Method: getSuperclass
675 * Signature: ()Ljava/lang/Class;
677 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_getSuperclass(JNIEnv *env, jclass clazz, java_lang_Class *that)
679 classinfo *cl = (classinfo *) that;
680 classinfo *c = cl->super;
685 use_class_as_object (c);
687 return (java_lang_Class *) c;
692 * Class: java/lang/Class
696 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isArray(JNIEnv *env, jclass clazz, java_lang_Class *that)
698 classinfo *c = (classinfo *) that;
700 return c->vftbl->arraydesc != NULL;
705 * Class: java/lang/Class
706 * Method: isAssignableFrom
707 * Signature: (Ljava/lang/Class;)Z
709 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isAssignableFrom(JNIEnv *env, jclass clazz, java_lang_Class *that, java_lang_Class *sup)
711 /* log_text("Java_java_lang_VMClass_isAssignableFrom");*/
715 panic("sup->vmClass is NULL in VMClass.isAssignableFrom");
718 return (*env)->IsAssignableForm(env, (jclass) sup, (jclass) that);
723 * Class: java/lang/Class
725 * Signature: (Ljava/lang/Object;)Z
727 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isInstance(JNIEnv *env, jclass clazz, java_lang_Class *that, java_lang_Object *obj)
729 /* classinfo *clazz = (classinfo *) that; */
731 return (*env)->IsInstanceOf(env, (jobject) obj, that);
736 * Class: java/lang/Class
737 * Method: isInterface
740 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isInterface(JNIEnv *env, jclass clazz, java_lang_Class *that)
742 classinfo *c = (classinfo *) that;
744 if (c->flags & ACC_INTERFACE)
752 * Class: java/lang/Class
753 * Method: isPrimitive
756 JNIEXPORT s4 JNICALL Java_java_lang_VMClass_isPrimitive(JNIEnv *env, jclass clazz, java_lang_Class *that)
759 classinfo *c = (classinfo *) that;
761 /* search table of primitive classes */
762 for (i = 0; i < PRIMITIVETYPE_COUNT; i++)
763 if (primitivetype_table[i].class_primitive == c)
771 * Class: java_lang_VMClass
775 JNIEXPORT void JNICALL Java_java_lang_VMClass_initialize(JNIEnv *env, jclass clazz, java_lang_Class *c)
779 ci = (classinfo *) c;
781 /* initialize class */
782 if (!ci->initialized)
788 * Class: java_lang_VMClass
789 * Method: loadArrayClass
790 * Signature: (Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/lang/Class;
792 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClass_loadArrayClass(JNIEnv *env, jclass clazz, java_lang_String *par1, java_lang_ClassLoader* par2)
794 log_text("Java_java_lang_VMClass_loadArrayClass");
801 * Class: java_lang_VMClass
802 * Method: throwException
803 * Signature: (Ljava/lang/Throwable;)V
805 JNIEXPORT void JNICALL Java_java_lang_VMClass_throwException(JNIEnv *env, jclass clazz, java_lang_Throwable *par1)
807 log_text("Won't implement VmClass.throwException. (Not needed according to spec) Is only needed to be bug compatible with the SUN VM. (according to gnuclasspath team)");
815 * These are local overrides for various environment variables in Emacs.
816 * Please do not remove this and leave it at the end of the file, where
817 * Emacs will automagically detect them.
818 * ---------------------------------------------------------------------
821 * indent-tabs-mode: t