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py: Add typecode to buffer protocol.

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When querying an object that supports the buffer protocol, that object
must now return a typecode (as per binary.[ch]).  This does not have to
be honoured by the caller, but can be useful for determining element
size.
This commit is contained in:
Damien George
2014-04-18 22:29:21 +01:00
parent 3fd2d7fad2
commit 57a4b4f178
7 changed files with 24 additions and 25 deletions
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10
py/obj.c
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@@ -357,20 +357,20 @@ mp_obj_t mp_identity(mp_obj_t self) {
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_identity_obj, mp_identity);
bool mp_get_buffer(mp_obj_t obj, buffer_info_t *bufinfo) {
bool mp_get_buffer(mp_obj_t obj, mp_buffer_info_t *bufinfo) {
mp_obj_type_t *type = mp_obj_get_type(obj);
if (type->buffer_p.get_buffer == NULL) {
return false;
}
type->buffer_p.get_buffer(obj, bufinfo, BUFFER_READ);
if (bufinfo->buf == NULL) {
int ret = type->buffer_p.get_buffer(obj, bufinfo, MP_BUFFER_READ);
if (ret != 0 || bufinfo->buf == NULL) {
return false;
}
return true;
}
void mp_get_buffer_raise(mp_obj_t obj, buffer_info_t *bufinfo) {
void mp_get_buffer_raise(mp_obj_t obj, mp_buffer_info_t *bufinfo) {
if (!mp_get_buffer(obj, bufinfo)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "Object with buffer protocol required"));
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "object with buffer protocol required"));
}
}