/// Set a value in a dict. Objects are recursively expanded into their
/// vimscript equivalents. Passing 'nil' as value deletes the key.
///
/// @param dict The vimscript dict
/// @param key The key
/// @param value The new value
/// @param[out] err Details of an error that may have occurred
/// @return the old value, if any
Object dict_set_value(dict_T *dict, String key, Object value, Error *err)
{
Object rv = OBJECT_INIT;
if (dict->dv_lock) {
set_api_error("Dictionary is locked", err);
return rv;
}
if (key.size == 0) {
set_api_error("Empty dictionary keys aren't allowed", err);
return rv;
}
if (key.size > INT_MAX) {
set_api_error("Key length is too high", err);
return rv;
}
dictitem_T *di = dict_find(dict, (uint8_t *)key.data, (int)key.size);
if (value.type == kObjectTypeNil) {
// Delete the key
if (di == NULL) {
// Doesn't exist, fail
set_api_error("Key doesn't exist", err);
} else {
// Return the old value
rv = vim_to_object(&di->di_tv);
// Delete the entry
hashitem_T *hi = hash_find(&dict->dv_hashtab, di->di_key);
hash_remove(&dict->dv_hashtab, hi);
dictitem_free(di);
}
} else {
// Update the key
typval_T tv;
// Convert the object to a vimscript type in the temporary variable
if (!object_to_vim(value, &tv, err)) {
return rv;
}
if (di == NULL) {
// Need to create an entry
di = dictitem_alloc((uint8_t *) key.data);
dict_add(dict, di);
} else {
// Return the old value
clear_tv(&di->di_tv);
}
// Update the value
copy_tv(&tv, &di->di_tv);
// Clear the temporary variable
clear_tv(&tv);
}
return rv;
}
static int
list_insert_tv(list_T *l, typval_T *tv, listitem_T *item)
{
listitem_T *ni = listitem_alloc();
if (ni == NULL)
return FAIL;
copy_tv(tv, &ni->li_tv);
if (item == NULL)
list_append(l, ni);
else
{
ni->li_prev = item->li_prev;
ni->li_next = item;
if (item->li_prev == NULL)
{
l->lv_first = ni;
++l->lv_idx;
}
else
{
item->li_prev->li_next = ni;
l->lv_idx_item = NULL;
}
item->li_prev = ni;
++l->lv_len;
}
return OK;
}
static int
luaV_list_newindex (lua_State *L)
{
list_T *l = luaV_unbox(L, luaV_List, 1);
long n = (long) luaL_checkinteger(L, 2);
listitem_T *li;
if (l->lv_lock)
luaL_error(L, "list is locked");
li = list_find(l, n);
if (li == NULL) return 0;
if (lua_isnil(L, 3)) /* remove? */
{
vimlist_remove(l, li, li);
clear_tv(&li->li_tv);
vim_free(li);
}
else
{
typval_T v;
luaV_totypval(L, 3, &v);
clear_tv(&li->li_tv);
copy_tv(&v, &li->li_tv);
clear_tv(&v);
}
return 0;
}
static int
luaV_dict_newindex (lua_State *L)
{
dict_T *d = luaV_unbox(L, luaV_Dict, 1);
char_u *key = (char_u *) luaL_checkstring(L, 2);
dictitem_T *di;
if (d->dv_lock)
luaL_error(L, "dict is locked");
di = dict_find(d, key, -1);
if (di == NULL) /* non-existing key? */
{
if (lua_isnil(L, 3)) return 0;
di = dictitem_alloc(key);
if (di == NULL) return 0;
if (dict_add(d, di) == FAIL)
{
vim_free(di);
return 0;
}
}
else
clear_tv(&di->di_tv);
if (lua_isnil(L, 3)) /* remove? */
{
hashitem_T *hi = hash_find(&d->dv_hashtab, di->di_key);
hash_remove(&d->dv_hashtab, hi);
dictitem_free(di);
}
else {
typval_T v;
luaV_totypval(L, 3, &v);
copy_tv(&v, &di->di_tv);
}
return 0;
}
/*
* Make a copy of dict "d". Shallow if "deep" is FALSE.
* The refcount of the new dict is set to 1.
* See item_copy() for "copyID".
* Returns NULL when out of memory.
*/
dict_T *
dict_copy(dict_T *orig, int deep, int copyID)
{
dict_T *copy;
dictitem_T *di;
int todo;
hashitem_T *hi;
if (orig == NULL)
return NULL;
copy = dict_alloc();
if (copy != NULL)
{
if (copyID != 0)
{
orig->dv_copyID = copyID;
orig->dv_copydict = copy;
}
todo = (int)orig->dv_hashtab.ht_used;
for (hi = orig->dv_hashtab.ht_array; todo > 0 && !got_int; ++hi)
{
if (!HASHITEM_EMPTY(hi))
{
--todo;
di = dictitem_alloc(hi->hi_key);
if (di == NULL)
break;
if (deep)
{
if (item_copy(&HI2DI(hi)->di_tv, &di->di_tv, deep,
copyID) == FAIL)
{
vim_free(di);
break;
}
}
else
copy_tv(&HI2DI(hi)->di_tv, &di->di_tv);
if (dict_add(copy, di) == FAIL)
{
dictitem_free(di);
break;
}
}
}
++copy->dv_refcount;
if (todo > 0)
{
dict_unref(copy);
copy = NULL;
}
}
return copy;
}
/*
* Insert typval_T "tv" in list "l" before "item".
* If "item" is NULL append at the end.
* Return FAIL when out of memory.
*/
int
list_insert_tv(list_T *l, typval_T *tv, listitem_T *item)
{
listitem_T *ni = listitem_alloc();
if (ni == NULL)
return FAIL;
copy_tv(tv, &ni->li_tv);
list_insert(l, ni, item);
return OK;
}
/*
* Append typval_T "tv" to the end of list "l".
* Return FAIL when out of memory.
*/
int
list_append_tv(list_T *l, typval_T *tv)
{
listitem_T *li = listitem_alloc();
if (li == NULL)
return FAIL;
copy_tv(tv, &li->li_tv);
list_append(l, li);
return OK;
}
/*
* Make a copy of a Dictionary item.
*/
static dictitem_T *
dictitem_copy(dictitem_T *org)
{
dictitem_T *di;
di = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T)
+ STRLEN(org->di_key)));
if (di != NULL)
{
STRCPY(di->di_key, org->di_key);
di->di_flags = DI_FLAGS_ALLOC;
copy_tv(&org->di_tv, &di->di_tv);
}
return di;
}
/*
* Make a copy of list "orig". Shallow if "deep" is FALSE.
* The refcount of the new list is set to 1.
* See item_copy() for "copyID".
* Returns NULL when out of memory.
*/
list_T *
list_copy(list_T *orig, int deep, int copyID)
{
list_T *copy;
listitem_T *item;
listitem_T *ni;
if (orig == NULL)
return NULL;
copy = list_alloc();
if (copy != NULL)
{
if (copyID != 0)
{
/* Do this before adding the items, because one of the items may
* refer back to this list. */
orig->lv_copyID = copyID;
orig->lv_copylist = copy;
}
for (item = orig->lv_first; item != NULL && !got_int;
item = item->li_next)
{
ni = listitem_alloc();
if (ni == NULL)
break;
if (deep)
{
if (item_copy(&item->li_tv, &ni->li_tv, deep, copyID) == FAIL)
{
vim_free(ni);
break;
}
}
else
copy_tv(&item->li_tv, &ni->li_tv);
list_append(copy, ni);
}
++copy->lv_refcount;
if (item != NULL)
{
list_unref(copy);
copy = NULL;
}
}
return copy;
}
/*
* Go over all entries in "d2" and add them to "d1".
* When "action" is "error" then a duplicate key is an error.
* When "action" is "force" then a duplicate key is overwritten.
* Otherwise duplicate keys are ignored ("action" is "keep").
*/
void
dict_extend(dict_T *d1, dict_T *d2, char_u *action)
{
dictitem_T *di1;
hashitem_T *hi2;
int todo;
char_u *arg_errmsg = (char_u *)N_("extend() argument");
todo = (int)d2->dv_hashtab.ht_used;
for (hi2 = d2->dv_hashtab.ht_array; todo > 0; ++hi2)
{
if (!HASHITEM_EMPTY(hi2))
{
--todo;
di1 = dict_find(d1, hi2->hi_key, -1);
if (d1->dv_scope != 0)
{
/* Disallow replacing a builtin function in l: and g:.
* Check the key to be valid when adding to any scope. */
if (d1->dv_scope == VAR_DEF_SCOPE
&& HI2DI(hi2)->di_tv.v_type == VAR_FUNC
&& var_check_func_name(hi2->hi_key, di1 == NULL))
break;
if (!valid_varname(hi2->hi_key))
break;
}
if (di1 == NULL)
{
di1 = dictitem_copy(HI2DI(hi2));
if (di1 != NULL && dict_add(d1, di1) == FAIL)
dictitem_free(di1);
}
else if (*action == 'e')
{
EMSG2(_("E737: Key already exists: %s"), hi2->hi_key);
break;
}
else if (*action == 'f' && HI2DI(hi2) != di1)
{
if (tv_check_lock(di1->di_tv.v_lock, arg_errmsg, TRUE)
|| var_check_ro(di1->di_flags, arg_errmsg, TRUE))
break;
clear_tv(&di1->di_tv);
copy_tv(&HI2DI(hi2)->di_tv, &di1->di_tv);
}
}
}
}
static int
luaV_list_add (lua_State *L)
{
luaV_List *lis = luaV_checkudata(L, 1, LUAVIM_LIST);
list_T *l = (list_T *) luaV_checkcache(L, (void *) *lis);
listitem_T *li;
if (l->lv_lock)
luaL_error(L, "list is locked");
li = listitem_alloc();
if (li != NULL)
{
typval_T v;
lua_settop(L, 2);
luaV_totypval(L, 2, &v);
copy_tv(&v, &li->li_tv);
list_append(l, li);
}
lua_settop(L, 1);
return 1;
}
/*
* Turn a dict into a list:
* "what" == 0: list of keys
* "what" == 1: list of values
* "what" == 2: list of items
*/
void
dict_list(typval_T *argvars, typval_T *rettv, int what)
{
list_T *l2;
dictitem_T *di;
hashitem_T *hi;
listitem_T *li;
listitem_T *li2;
dict_T *d;
int todo;
if (argvars[0].v_type != VAR_DICT)
{
EMSG(_(e_dictreq));
return;
}
if ((d = argvars[0].vval.v_dict) == NULL)
return;
if (rettv_list_alloc(rettv) == FAIL)
return;
todo = (int)d->dv_hashtab.ht_used;
for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi)
{
if (!HASHITEM_EMPTY(hi))
{
--todo;
di = HI2DI(hi);
li = listitem_alloc();
if (li == NULL)
break;
list_append(rettv->vval.v_list, li);
if (what == 0)
{
/* keys() */
li->li_tv.v_type = VAR_STRING;
li->li_tv.v_lock = 0;
li->li_tv.vval.v_string = vim_strsave(di->di_key);
}
else if (what == 1)
{
/* values() */
copy_tv(&di->di_tv, &li->li_tv);
}
else
{
/* items() */
l2 = list_alloc();
li->li_tv.v_type = VAR_LIST;
li->li_tv.v_lock = 0;
li->li_tv.vval.v_list = l2;
if (l2 == NULL)
break;
++l2->lv_refcount;
li2 = listitem_alloc();
if (li2 == NULL)
break;
list_append(l2, li2);
li2->li_tv.v_type = VAR_STRING;
li2->li_tv.v_lock = 0;
li2->li_tv.vval.v_string = vim_strsave(di->di_key);
li2 = listitem_alloc();
if (li2 == NULL)
break;
list_append(l2, li2);
copy_tv(&di->di_tv, &li2->li_tv);
}
}
}
}