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py: Remove mp_obj_str_builder and use vstr instead.

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With this patch str/bytes construction is streamlined.  Always use a
vstr to build a str/bytes object.  If the size is known beforehand then
use vstr_init_len to allocate only required memory.  Otherwise use
vstr_init and the vstr will grow as needed.  Then use
mp_obj_new_str_from_vstr to create a str/bytes object using the vstr
memory.

Saves code ROM: 68 bytes on stmhal, 108 bytes on bare-arm, and 336 bytes
on unix x64.
This commit is contained in:
Damien George
2015-01-21 22:48:37 +00:00
parent 0b9ee86133
commit 05005f679e
18 changed files with 130 additions and 143 deletions
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3
py/obj.h
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@@ -500,9 +500,6 @@ mp_obj_t mp_alloc_emergency_exception_buf(mp_obj_t size_in);
void mp_init_emergency_exception_buf(void);
// str
mp_obj_t mp_obj_str_builder_start(const mp_obj_type_t *type, mp_uint_t len, byte **data);
mp_obj_t mp_obj_str_builder_end(mp_obj_t o_in);
mp_obj_t mp_obj_str_builder_end_with_len(mp_obj_t o_in, mp_uint_t len);
bool mp_obj_str_equal(mp_obj_t s1, mp_obj_t s2);
mp_uint_t mp_obj_str_get_hash(mp_obj_t self_in);
mp_uint_t mp_obj_str_get_len(mp_obj_t self_in);