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#include <string.h>
#include <stdio.h>
#include "cafebabe/class.h"
#include "cafebabe/constant_pool.h"
#include "cafebabe/field_info.h"
#include "cafebabe/stream.h"
#include "cafebabe/annotations_attribute.h"
#include "vm/class.h"
#include "vm/field.h"
#include "vm/method.h"
#include "vm/object.h"
#include "vm/stdlib.h"
#include "vm/annotation.h"
int vm_field_init(struct vm_field *vmf,
struct vm_class *vmc, unsigned int field_index)
{
const struct cafebabe_class *class = vmc->class;
const struct cafebabe_field_info *field
= &class->fields[field_index];
vmf->class = vmc;
vmf->field_index = field_index;
vmf->field = field;
vmf->annotation_initialized = false;
const struct cafebabe_constant_info_utf8 *name;
if (cafebabe_class_constant_get_utf8(class, field->name_index,
&name))
{
NOT_IMPLEMENTED;
return -1;
}
vmf->name = strndup((char *) name->bytes, name->length);
if (!vmf->name) {
NOT_IMPLEMENTED;
return -1;
}
const struct cafebabe_constant_info_utf8 *type;
if (cafebabe_class_constant_get_utf8(class, field->descriptor_index,
&type))
{
NOT_IMPLEMENTED;
return -1;
}
vmf->type = strndup((char *) type->bytes, type->length);
if (!vmf->type)
return -ENOMEM;
if (parse_field_type(vmf)) {
NOT_IMPLEMENTED;
return -1;
}
return 0;
}
int vm_field_init_annotation(struct vm_field *vmf)
{
const struct cafebabe_class *class = vmf->class->class;
const struct cafebabe_field_info *field
= &class->fields[vmf->field_index];
struct cafebabe_annotations_attribute annotations_attribute;
if (cafebabe_read_annotations_attribute(class, &field->attributes, &annotations_attribute))
goto out;
if (!annotations_attribute.num_annotations)
goto out_deinit_annotations;
vmf->annotations = vm_alloc(sizeof(struct vm_annotation *) * annotations_attribute.num_annotations);
if (!vmf->annotations)
goto out_deinit_annotations;
for (unsigned int i = 0; i < annotations_attribute.num_annotations; i++) {
struct cafebabe_annotation *annotation = &annotations_attribute.annotations[i];
struct vm_annotation *vma;
vma = vm_annotation_parse(vmf->class, annotation);
if (!vma)
goto error_free_annotations;
vmf->annotations[vmf->nr_annotations++] = vma;
}
out_deinit_annotations:
cafebabe_annotations_attribute_deinit(&annotations_attribute);
out:
vmf->annotation_initialized = true;
return 0;
error_free_annotations:
for (unsigned int i = 0; i < vmf->nr_annotations; i++) {
struct vm_annotation *vma = vmf->annotations[i];
vm_annotation_free(vma);
}
vm_free(vmf->annotations);
return -1;
}
void vm_field_init_nonstatic(struct vm_field *vmf)
{
}
int vm_field_init_static(struct vm_field *vmf)
{
const struct vm_class *vmc = vmf->class;
const struct cafebabe_class *class = vmc->class;
const struct cafebabe_field_info *field
= &class->fields[vmf->field_index];
unsigned int constant_value_index = 0;
if (cafebabe_attribute_array_get(&field->attributes,
"ConstantValue", class, &constant_value_index))
{
return 0;
}
const struct cafebabe_attribute_info *attribute
= &field->attributes.array[constant_value_index];
struct cafebabe_constant_value_attribute constant_value_attribute;
struct cafebabe_stream stream;
cafebabe_stream_open_buffer(&stream,
attribute->info, attribute->attribute_length);
if (cafebabe_constant_value_attribute_init(
&constant_value_attribute, &stream))
{
NOT_IMPLEMENTED;
return -1;
}
cafebabe_stream_close_buffer(&stream);
int idx = constant_value_attribute.constant_value_index;
if (cafebabe_class_constant_index_invalid(class, idx)) {
NOT_IMPLEMENTED;
return -1;
}
struct cafebabe_constant_pool *cp;
cp = &class->constant_pool[idx];
/* XXX: I don't actually have any way to test that this works. We
* should write a test case in Jasmine or something, I guess. */
switch (cp->tag) {
case CAFEBABE_CONSTANT_TAG_INTEGER:
if (mimic_stack_type(vmf->type_info.vm_type) != J_INT) {
NOT_IMPLEMENTED;
return -1;
}
static_field_set_int(vmf, cp->integer_.bytes);
break;
case CAFEBABE_CONSTANT_TAG_FLOAT:
if (vmf->type_info.vm_type != J_FLOAT) {
NOT_IMPLEMENTED;
return -1;
}
static_field_set_float(vmf, cp->float_.bytes);
break;
case CAFEBABE_CONSTANT_TAG_STRING: {
if (strcmp(vmf->type_info.class_name, "java/lang/String")) {
NOT_IMPLEMENTED;
return -1;
}
const struct cafebabe_constant_info_utf8 *utf8;
if (cafebabe_class_constant_get_utf8(class,
cp->string.string_index, &utf8))
{
NOT_IMPLEMENTED;
return -1;
}
struct vm_object *string
= vm_object_alloc_string_from_utf8(utf8->bytes,
utf8->length);
if (!string) {
NOT_IMPLEMENTED;
return -1;
}
static_field_set_object(vmf, string);
break;
}
case CAFEBABE_CONSTANT_TAG_LONG:
if (vmf->type_info.vm_type != J_LONG) {
NOT_IMPLEMENTED;
return -1;
}
static_field_set_long(vmf,
((uint64_t) cp->long_.high_bytes << 32)
+ (uint64_t) cp->long_.low_bytes);
break;
case CAFEBABE_CONSTANT_TAG_DOUBLE:
if (vmf->type_info.vm_type != J_DOUBLE) {
NOT_IMPLEMENTED;
return -1;
}
static_field_set_double(vmf,
uint64_to_double(cp->double_.low_bytes, cp->double_.high_bytes));
break;
default:
return -1;
}
return 0;
}
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