Contact: cacao@cacaojvm.org
Authors: Reinhard Grafl
-
- Changes: Mark Probst
+ Mark Probst
Andreas Krall
Christian Thalinger
- Edwin Steiner
+ Edwin Steiner
- $Id: class.c 6033 2006-11-21 16:56:56Z michi $
+ $Id: class.c 6216 2006-12-18 18:21:37Z twisti $
*/
#include "vm/resolve.h"
#include "vm/statistics.h"
#include "vm/stringlocal.h"
+#include "vm/suck.h"
#include "vm/utf8.h"
}
+/* class_load_attribute_sourcefile *********************************************
+
+ SourceFile_attribute {
+ u2 attribute_name_index;
+ u4 attribute_length;
+ u2 sourcefile_index;
+ }
+
+*******************************************************************************/
+
+static bool class_load_attribute_sourcefile(classbuffer *cb)
+{
+ classinfo *c;
+ u4 attribute_length;
+ u2 sourcefile_index;
+ utf *sourcefile;
+
+ /* get classinfo */
+
+ c = cb->class;
+
+ /* check buffer size */
+
+ if (!suck_check_classbuffer_size(cb, 4 + 2))
+ return false;
+
+ /* check attribute length */
+
+ attribute_length = suck_u4(cb);
+
+ if (attribute_length != 2) {
+ exceptions_throw_classformaterror(c, "Wrong size for VALUE attribute");
+ return false;
+ }
+
+ /* there can be no more than one SourceFile attribute */
+
+ if (c->sourcefile != NULL) {
+ exceptions_throw_classformaterror(c, "Multiple SourceFile attributes");
+ return false;
+ }
+
+ /* get sourcefile */
+
+ sourcefile_index = suck_u2(cb);
+ sourcefile = class_getconstant(c, sourcefile_index, CONSTANT_Utf8);
+
+ if (sourcefile == NULL)
+ return false;
+
+ /* store sourcefile */
+
+ c->sourcefile = sourcefile;
+
+ return true;
+}
+
+
+/* class_load_attribute_enclosingmethod ****************************************
+
+ EnclosingMethod_attribute {
+ u2 attribute_name_index;
+ u4 attribute_length;
+ u2 class_index;
+ u2 method_index;
+ }
+
+*******************************************************************************/
+
+static bool class_load_attribute_enclosingmethod(classbuffer *cb)
+{
+ classinfo *c;
+ u4 attribute_length;
+ u2 class_index;
+ u2 method_index;
+ classref_or_classinfo cr;
+ constant_nameandtype *cn;
+
+ /* get classinfo */
+
+ c = cb->class;
+
+ /* check buffer size */
+
+ if (!suck_check_classbuffer_size(cb, 4 + 2 + 2))
+ return false;
+
+ /* check attribute length */
+
+ attribute_length = suck_u4(cb);
+
+ if (attribute_length != 4) {
+ exceptions_throw_classformaterror(c, "Wrong size for VALUE attribute");
+ return false;
+ }
+
+ /* there can be no more than one EnclosingMethod attribute */
+
+ if (c->enclosingmethod != NULL) {
+ exceptions_throw_classformaterror(c, "Multiple EnclosingMethod attributes");
+ return false;
+ }
+
+ /* get class index */
+
+ class_index = suck_u2(cb);
+ cr.ref = innerclass_getconstant(c, class_index, CONSTANT_Class);
+
+ /* get method index */
+
+ method_index = suck_u2(cb);
+ cn = innerclass_getconstant(c, method_index, CONSTANT_NameAndType);
+
+ /* store info in classinfo */
+
+ c->enclosingclass.any = cr.any;
+ c->enclosingmethod = cn;
+
+ return true;
+}
+
+
+/* class_load_attributes *******************************************************
+
+ Read attributes from ClassFile.
+
+ attribute_info {
+ u2 attribute_name_index;
+ u4 attribute_length;
+ u1 info[attribute_length];
+ }
+
+ InnerClasses_attribute {
+ u2 attribute_name_index;
+ u4 attribute_length;
+ }
+
+*******************************************************************************/
+
+bool class_load_attributes(classbuffer *cb)
+{
+ classinfo *c;
+ u4 i, j;
+ u2 attributes_count;
+ u2 attribute_name_index;
+ utf *attribute_name;
+
+ c = cb->class;
+
+ /* get attributes count */
+
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
+
+ attributes_count = suck_u2(cb);
+
+ for (i = 0; i < attributes_count; i++) {
+ /* get attribute name */
+
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
+
+ attribute_name_index = suck_u2(cb);
+ attribute_name =
+ class_getconstant(c, attribute_name_index, CONSTANT_Utf8);
+
+ if (attribute_name == NULL)
+ return false;
+
+ if (attribute_name == utf_InnerClasses) {
+ /* InnerClasses */
+
+ if (c->innerclass != NULL) {
+ exceptions_throw_classformaterror(c, "Multiple InnerClasses attributes");
+ return false;
+ }
+
+ if (!suck_check_classbuffer_size(cb, 4 + 2))
+ return false;
+
+ /* skip attribute length */
+ suck_u4(cb);
+
+ /* number of records */
+ c->innerclasscount = suck_u2(cb);
+
+ if (!suck_check_classbuffer_size(cb, (2 + 2 + 2 + 2) * c->innerclasscount))
+ return false;
+
+ /* allocate memory for innerclass structure */
+ c->innerclass = MNEW(innerclassinfo, c->innerclasscount);
+
+ for (j = 0; j < c->innerclasscount; j++) {
+ /* The innerclass structure contains a class with an encoded
+ name, its defining scope, its simple name and a bitmask of
+ the access flags. If an inner class is not a member, its
+ outer_class is NULL, if a class is anonymous, its name is
+ NULL. */
+
+ innerclassinfo *info = c->innerclass + j;
+
+ info->inner_class.ref =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
+ info->outer_class.ref =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
+ info->name =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Utf8);
+ info->flags = suck_u2(cb);
+ }
+ }
+ else if (attribute_name == utf_SourceFile) {
+ /* SourceFile */
+
+ if (!class_load_attribute_sourcefile(cb))
+ return false;
+ }
+#if defined(ENABLE_JAVASE)
+ else if (attribute_name == utf_EnclosingMethod) {
+ /* EnclosingMethod */
+
+ if (!class_load_attribute_enclosingmethod(cb))
+ return false;
+ }
+ else if (attribute_name == utf_Signature) {
+ /* Signature */
+
+ if (!loader_load_attribute_signature(cb, &(c->signature)))
+ return false;
+ }
+ else if (attribute_name == utf_RuntimeVisibleAnnotations) {
+ /* RuntimeVisibleAnnotations */
+
+ if (!annotation_load_attribute_runtimevisibleannotations(cb))
+ return false;
+ }
+#endif
+ else {
+ /* unknown attribute */
+
+ if (!loader_skip_attribute_body(cb))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+
/* class_freepool **************************************************************
Frees all resources used by this classes Constant Pool.
/* check index and type of constantpool entry */
/* (pos == 0 is caught by type comparison) */
- if (pos >= c->cpcount || c->cptags[pos] != ctype) {
- *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
+ if ((pos >= c->cpcount) || (c->cptags[pos] != ctype)) {
+ exceptions_throw_classformaterror(c, "Illegal constant pool index");
return NULL;
}
voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype)
{
/* invalid position in constantpool */
+
if (pos >= c->cpcount) {
- *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
+ exceptions_throw_classformaterror(c, "Illegal constant pool index");
return NULL;
}
/* constantpool entry of type 0 */
- if (!c->cptags[pos])
+
+ if (c->cptags[pos] == 0)
return NULL;
/* check type of constantpool entry */
+
if (c->cptags[pos] != ctype) {
*exceptionptr = new_classformaterror(c, "Illegal constant pool index");
return NULL;
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