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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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2
extmod/modure.c
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@@ -373,7 +373,7 @@ STATIC mp_obj_t re_sub_helper(size_t n_args, const mp_obj_t *args) {
vstr_add_strn(&vstr_return, subj.begin, subj.end - subj.begin);
if (mp_obj_get_type(where) == &mp_type_str) {
return mp_obj_new_str_from_vstr(&vstr_return);
return mp_obj_new_str_from_utf8_vstr(&vstr_return);
} else {
return mp_obj_new_bytes_from_vstr(&vstr_return);
}