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binary: Factor out mp_binary_set_int().

This commit is contained in:
Paul Sokolovsky 2014-07-05 23:43:00 +03:00
parent 539681fffd
commit 5fa5ca40e6
2 changed files with 19 additions and 16 deletions
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34
py/binary.c
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@ -177,6 +177,23 @@ mp_obj_t mp_binary_get_val(char struct_type, char val_type, byte **ptr) {
} }
} }
void mp_binary_set_int(uint val_sz, bool big_endian, byte *p, byte *val_ptr) {
int in_delta, out_delta;
if (big_endian) {
in_delta = -1;
out_delta = 1;
val_ptr += val_sz - 1;
} else {
in_delta = out_delta = 1;
}
for (uint i = val_sz; i > 0; i--) {
*p = *val_ptr;
p += out_delta;
val_ptr += in_delta;
}
}
void mp_binary_set_val(char struct_type, char val_type, mp_obj_t val_in, byte **ptr) { void mp_binary_set_val(char struct_type, char val_type, mp_obj_t val_in, byte **ptr) {
byte *p = *ptr; byte *p = *ptr;
uint align; uint align;
@ -206,22 +223,7 @@ void mp_binary_set_val(char struct_type, char val_type, mp_obj_t val_in, byte **
val = mp_obj_get_int(val_in); val = mp_obj_get_int(val_in);
} }
int in_delta, out_delta; mp_binary_set_int(MIN(size, sizeof(val)), struct_type == '>', p, in);
uint val_sz = MIN(size, sizeof(val));
if (struct_type == '>') {
in_delta = -1;
out_delta = 1;
in += val_sz - 1;
} else {
in_delta = out_delta = 1;
}
for (uint i = val_sz; i > 0; i--) {
*p = *in;
p += out_delta;
in += in_delta;
}
} }
void mp_binary_set_val_array(char typecode, void *p, int index, mp_obj_t val_in) { void mp_binary_set_val_array(char typecode, void *p, int index, mp_obj_t val_in) {

1
py/binary.h
View File

@ -35,3 +35,4 @@ void mp_binary_set_val_array_from_int(char typecode, void *p, int index, mp_int_
mp_obj_t mp_binary_get_val(char struct_type, char val_type, byte **ptr); mp_obj_t mp_binary_get_val(char struct_type, char val_type, byte **ptr);
void mp_binary_set_val(char struct_type, char val_type, mp_obj_t val_in, byte **ptr); void mp_binary_set_val(char struct_type, char val_type, mp_obj_t val_in, byte **ptr);
mp_int_t mp_binary_get_int(uint size, bool is_signed, bool big_endian, byte *p); mp_int_t mp_binary_get_int(uint size, bool is_signed, bool big_endian, byte *p);
void mp_binary_set_int(uint val_sz, bool big_endian, byte *p, byte *val_ptr);