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#include "api/error.h"
#include "arch/x86_64/hal/obj.h"
#include "hal/memory.h"
#include "hal/obj.h"
#include "lib/string.h"
#include "jove.h"
#include <errno.h>
int
objdir_new(jove_owned_obj_t *untyped_obj)
{
jove_untyped_t *untyped = obj_deref(untyped_obj);
if((uintptr_t)untyped & (JOVE_OBJDIR_SIZE - 1)) return -EALIGN;
if(untyped->limit != JOVE_OBJDIR_SIZE) return -EBADSIZE;
memset(untyped, 0, JOVE_OBJDIR_SIZE);
obj_settype(untyped_obj, JOVE_OBJ_OBJDIR);
return 0;
}
jove_obj_t
objdir_peeklocal(
jove_owned_obj_t *objdir_obj,
uint16_t entry)
{
if(obj_gettype(objdir_obj) != JOVE_OBJ_OBJDIR) {
errno = EBADOBJ;
return (jove_obj_t) { 0 };
}
if(entry >= JOVE_OBJDIR_ENTRIES) {
errno = EBADPATH;
return (jove_obj_t) { 0 };
}
jove_objdir_t *objtab = obj_deref(objdir_obj);
return objtab->entries[entry];
}
jove_owned_obj_t*
objdir_getlocal(
jove_owned_obj_t *objdir_obj,
uint16_t entry)
{
if(obj_gettype(objdir_obj) != JOVE_OBJ_OBJDIR) {
reterr(EBADOBJ);
}
if(entry >= JOVE_OBJDIR_ENTRIES) {
reterr(EBADPATH);
}
jove_objdir_t *objtab = obj_deref(objdir_obj);
return obj_take(&objtab->entries[entry]);
}
jove_owned_obj_t*
objdir_trygetlocal(
jove_owned_obj_t *objdir_obj,
uint16_t entry)
{
if(obj_gettype(objdir_obj) != JOVE_OBJ_OBJDIR) {
reterr(EBADOBJ);
}
if(entry >= JOVE_OBJDIR_ENTRIES) {
reterr(EBADPATH);
}
jove_objdir_t *objtab = obj_deref(objdir_obj);
return obj_trytake(&objtab->entries[entry]);
}
jove_owned_obj_t*
objdir_getobj(
jove_owned_obj_t *objdir_obj,
const uint16_t *path,
size_t path_len)
{
errno = 0;
if(path_len == 0) {
return objdir_obj;
}
{
jove_owned_obj_t *child_objdir = objdir_getlocal(objdir_obj, path[0]);
if(child_objdir == 0) {
reterr(EBADPATH);
}
jove_owned_obj_t *target_obj = objdir_getobj(child_objdir, path + 1, path_len - 1);
obj_release(child_objdir);
return target_obj;
}
}
jove_owned_obj_t*
objdir_trygetobj(
jove_owned_obj_t *objdir_obj,
const uint16_t *path,
size_t path_len)
{
errno = 0;
if(path_len == 0) {
return objdir_obj;
}
{
jove_owned_obj_t *child_objdir = objdir_trygetlocal(objdir_obj, path[0]);
if(child_objdir == 0) {
return 0;
}
jove_owned_obj_t *target_obj = objdir_trygetobj(child_objdir, path + 1, path_len - 1);
obj_release(child_objdir);
return target_obj;
}
}
void
objdir_swapobj(jove_owned_obj_t *a, jove_owned_obj_t *b)
{
jove_owned_obj_t buffer_obj = *a;
*a = *b;
*b = buffer_obj;
}
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