jvm/c/execute_helper.h

37 lines
2.0 KiB
C

static inline void class_entry_field_entry_from_constant_index(struct vm * vm,
int32_t index,
struct class_entry ** class_entry,
struct field_entry ** field_entry,
struct constant ** field_descriptor_constant)
{
struct constant * fieldref_constant = &vm->current_frame->class_entry->class_file->constant_pool[index - 1];
#ifdef DEBUG
assert(fieldref_constant->tag == CONSTANT_Fieldref);
#endif
*class_entry = class_resolver_lookup_class_from_class_index(vm->class_hash_table.length,
vm->class_hash_table.entry,
vm->current_frame->class_entry,
fieldref_constant->fieldref.class_index);
assert(*class_entry != nullptr);
int fields_hash_table_length = (*class_entry)->fields.length;
struct hash_table_entry * fields_hash_table = (*class_entry)->fields.entry;
*field_entry = class_resolver_lookup_field_from_fieldref_index(fields_hash_table_length,
fields_hash_table,
vm->current_frame->class_entry,
index);
assert(*field_entry != nullptr);
struct constant * nameandtype_constant = &vm->current_frame->class_entry->class_file->constant_pool[fieldref_constant->fieldref.name_and_type_index - 1];
#ifdef DEBUG
assert(nameandtype_constant->tag == CONSTANT_NameAndType);
#endif
*field_descriptor_constant = &vm->current_frame->class_entry->class_file->constant_pool[nameandtype_constant->nameandtype.descriptor_index - 1];
#ifdef DEBUG
assert((*field_descriptor_constant)->tag == CONSTANT_Utf8);
#endif
}