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py/objstr: Optimise mp_obj_new_str_from_vstr for known-safe strings.

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The new `mp_obj_new_str_from_utf8_vstr` can be used when you know you
already have a unicode-safe string.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared
2022-08-23 18:35:37 +10:00
committed by Damien George
parent 88864587f5
commit 3a910b1565
8 changed files with 19 additions and 7 deletions
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4
extmod/modujson.c
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@@ -67,7 +67,7 @@ STATIC mp_obj_t mod_ujson_dump_helper(size_t n_args, const mp_obj_t *pos_args, m
vstr_t vstr;
vstr_init_print(&vstr, 8, &print_ext.base);
mp_obj_print_helper(&print_ext.base, pos_args[0], PRINT_JSON);
return mp_obj_new_str_from_vstr(&vstr);
return mp_obj_new_str_from_utf8_vstr(&vstr);
} else {
// dump(obj, stream)
print_ext.base.data = MP_OBJ_TO_PTR(pos_args[1]);
@@ -103,7 +103,7 @@ STATIC mp_obj_t mod_ujson_dumps(mp_obj_t obj) {
mp_print_t print;
vstr_init_print(&vstr, 8, &print);
mp_obj_print_helper(&print, obj, PRINT_JSON);
return mp_obj_new_str_from_vstr(&vstr);
return mp_obj_new_str_from_utf8_vstr(&vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_ujson_dumps_obj, mod_ujson_dumps);