MIRROR: javascript for 🐜's, a tiny runtime with big ambitions
iterate over utf8 codepoints
+14
-6
+14
-6
src/ant.c
+14
-6
src/ant.c
···
10416
10416
10417
10417
static jsval_t for_of_iter_string(struct js *js, for_iter_ctx_t *ctx, jsval_t iterable) {
10418
10418
jshdl_t h_iterable = js_root(js, iterable);
10419
-
jsoff_t slen;
10420
-
(void) vstr(js, iterable, &slen);
10419
+
jsoff_t byte_len;
10420
+
jsoff_t soff = vstr(js, iterable, &byte_len);
10421
10421
10422
-
for (jsoff_t i = 0; i < slen; i++) {
10422
+
const char *str = (char *) &js->mem[soff];
10423
+
size_t utf16_len = utf16_strlen(str, byte_len);
10424
+
10425
+
for (size_t i = 0; i < utf16_len; i++) {
10423
10426
jsval_t cur = js_deref(js, h_iterable);
10424
-
jsoff_t soff = vstr(js, cur, NULL);
10425
-
const char *str = (char *) &js->mem[soff];
10426
-
jsval_t char_str = js_mkstr(js, &str[i], 1);
10427
+
jsoff_t cur_byte_len;
10428
+
jsoff_t cur_soff = vstr(js, cur, &cur_byte_len);
10429
+
const char *cur_str = (char *) &js->mem[cur_soff];
10430
+
10431
+
size_t char_bytes;
10432
+
int byte_offset = utf16_index_to_byte_offset(cur_str, cur_byte_len, i, &char_bytes);
10433
+
if (byte_offset < 0) break;
10434
+
jsval_t char_str = js_mkstr(js, cur_str + byte_offset, char_bytes);
10427
10435
10428
10436
jsval_t err = for_iter_bind_var(js, ctx, char_str);
10429
10437
if (is_err(err)) { js_unroot(js, h_iterable); return err; }