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#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "api/helpers.h"
#include "api/defs.h"
#include "../vim.h"
#include "memory.h"
#include "eval.h"
#include "lib/khash.h"
KHASH_SET_INIT_INT64(Lookup)
/// Recursion helper for the `vim_to_object`. This uses a pointer table
/// to avoid infinite recursion due to cyclic references
///
/// @param obj The source object
/// @param lookup Lookup table containing pointers to all processed objects
/// @return The converted value
static Object vim_to_object_rec(typval_T *obj, khash_t(Lookup) *lookup);
void try_start()
{
++trylevel;
}
bool try_end(Error *err)
{
--trylevel;
// Without this it stops processing all subsequent VimL commands and
// generates strange error messages if I e.g. try calling Test() in a
// cycle
did_emsg = false;
if (got_int) {
if (did_throw) {
// If we got an interrupt, discard the current exception
discard_current_exception();
}
set_api_error("Keyboard interrupt", err);
got_int = false;
} else if (msg_list != NULL && *msg_list != NULL) {
int should_free;
char *msg = (char *)get_exception_string(*msg_list,
ET_ERROR,
NULL,
&should_free);
strncpy(err->msg, msg, sizeof(err->msg));
err->set = true;
free_global_msglist();
if (should_free) {
free(msg);
}
} else if (did_throw) {
set_api_error((char *)current_exception->value, err);
}
return err->set;
}
Object vim_to_object(typval_T *obj)
{
Object rv;
// We use a lookup table to break out of cyclic references
khash_t(Lookup) *lookup = kh_init(Lookup);
rv = vim_to_object_rec(obj, lookup);
// Free the table
kh_destroy(Lookup, lookup);
return rv;
}
static Object vim_to_object_rec(typval_T *obj, khash_t(Lookup) *lookup)
{
Object rv = {.type = kObjectTypeNil};
if (obj->v_type == VAR_LIST || obj->v_type == VAR_DICT) {
int ret;
// Container object, add it to the lookup table
kh_put(Lookup, lookup, (uint64_t)obj, &ret);
if (!ret) {
// It's already present, meaning we alredy processed it so just return
// nil instead.
return rv;
}
}
switch (obj->v_type) {
case VAR_STRING:
if (obj->vval.v_string != NULL) {
rv.type = kObjectTypeString;
rv.data.string.data = xstrdup((char *)obj->vval.v_string);
rv.data.string.size = strlen(rv.data.string.data);
}
break;
case VAR_NUMBER:
rv.type = kObjectTypeInt;
rv.data.integer = obj->vval.v_number;
break;
case VAR_FLOAT:
rv.type = kObjectTypeFloat;
rv.data.floating_point = obj->vval.v_float;
break;
case VAR_LIST:
{
list_T *list = obj->vval.v_list;
listitem_T *item;
if (list != NULL) {
rv.type = kObjectTypeArray;
rv.data.array.size = list->lv_len;
rv.data.array.items = xmalloc(list->lv_len * sizeof(Object));
uint32_t i = 0;
for (item = list->lv_first; item != NULL; item = item->li_next) {
rv.data.array.items[i] = vim_to_object_rec(&item->li_tv, lookup);
i++;
}
}
}
break;
case VAR_DICT:
{
dict_T *dict = obj->vval.v_dict;
hashtab_T *ht;
uint64_t todo;
hashitem_T *hi;
dictitem_T *di;
if (dict != NULL) {
ht = &obj->vval.v_dict->dv_hashtab;
todo = ht->ht_used;
rv.type = kObjectTypeDictionary;
// Count items
rv.data.dictionary.size = 0;
for (hi = ht->ht_array; todo > 0; ++hi) {
if (!HASHITEM_EMPTY(hi)) {
todo--;
rv.data.dictionary.size++;
}
}
rv.data.dictionary.items =
xmalloc(rv.data.dictionary.size * sizeof(KeyValuePair));
todo = ht->ht_used;
uint32_t i = 0;
// Convert all
for (hi = ht->ht_array; todo > 0; ++hi) {
if (!HASHITEM_EMPTY(hi)) {
di = dict_lookup(hi);
// Convert key
rv.data.dictionary.items[i].key.data =
xstrdup((char *)hi->hi_key);
rv.data.dictionary.items[i].key.size =
strlen((char *)hi->hi_key);
// Convert value
rv.data.dictionary.items[i].value =
vim_to_object_rec(&di->di_tv, lookup);
todo--;
i++;
}
}
}
}
break;
}
return rv;
}
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