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#include <stdint.h>
#include <assert.h>
#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "binary.h"
// Helpers to work with binary-encoded data
int mp_binary_get_size(char typecode) {
// This assumes that unsigned and signed types are of the same type,
// which is invariant for [u]intN_t.
switch (typecode) {
case BYTEARRAY_TYPECODE:
case 'b':
case 'B':
return sizeof(int8_t);
case 'h':
case 'H':
return sizeof(int16_t);
case 'i':
case 'I':
return sizeof(int32_t);
case 'l':
case 'L':
return sizeof(int32_t);
case 'q':
case 'Q':
return sizeof(long long);
#if MICROPY_ENABLE_FLOAT
case 'f':
return sizeof(float);
case 'd':
return sizeof(double);
#endif
}
return -1;
}
mp_obj_t mp_binary_get_val(char typecode, void *p, int index) {
machine_int_t val = 0;
switch (typecode) {
case 'b':
val = ((int8_t*)p)[index];
break;
case BYTEARRAY_TYPECODE:
case 'B':
val = ((uint8_t*)p)[index];
break;
case 'h':
val = ((int16_t*)p)[index];
break;
case 'H':
val = ((uint16_t*)p)[index];
break;
case 'i':
case 'l':
return mp_obj_new_int(((int32_t*)p)[index]);
case 'I':
case 'L':
return mp_obj_new_int_from_uint(((uint32_t*)p)[index]);
#if MICROPY_LONGINT_IMPL != MICROPY_LONGINT_IMPL_NONE
case 'q':
case 'Q':
// TODO: Explode API more to cover signedness
return mp_obj_new_int_from_ll(((long long*)p)[index]);
#endif
#if MICROPY_ENABLE_FLOAT
case 'f':
return mp_obj_new_float(((float*)p)[index]);
case 'd':
return mp_obj_new_float(((double*)p)[index]);
#endif
}
return MP_OBJ_NEW_SMALL_INT(val);
}
mp_obj_t mp_binary_get_val_unaligned_le(char typecode, byte **ptr) {
machine_int_t val = 0;
byte *p = *ptr;
switch (typecode) {
case 'b':
val = (int8_t)*p++;
break;
case BYTEARRAY_TYPECODE:
case 'B':
val = *p++;
break;
case 'h':
val = (int16_t)((p[1] << 8) | p[0]);
break;
case 'H':
val = (p[1] << 8) | p[0];
break;
case 'i':
case 'l':
val = (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
*ptr = p + 4;
return mp_obj_new_int(val);
case 'I':
case 'L':
val = (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
*ptr = p + 4;
return mp_obj_new_int_from_uint(val);
#if 0 //TODO
#if MICROPY_LONGINT_IMPL != MICROPY_LONGINT_IMPL_NONE
case 'q':
case 'Q':
// TODO: Explode API more to cover signedness
return mp_obj_new_int_from_ll(((long long*)p)[index]);
#endif
#if MICROPY_ENABLE_FLOAT
case 'f':
return mp_obj_new_float(((float*)p)[index]);
case 'd':
return mp_obj_new_float(((double*)p)[index]);
#endif
#endif
}
*ptr = p;
return MP_OBJ_NEW_SMALL_INT(val);
}
void mp_binary_set_val(char typecode, void *p, int index, mp_obj_t val_in) {
machine_int_t val = 0;
if (MP_OBJ_IS_INT(val_in)) {
val = mp_obj_int_get(val_in);
}
switch (typecode) {
case 'b':
((int8_t*)p)[index] = val;
break;
case BYTEARRAY_TYPECODE:
case 'B':
val = ((uint8_t*)p)[index] = val;
break;
case 'h':
val = ((int16_t*)p)[index] = val;
break;
case 'H':
val = ((uint16_t*)p)[index] = val;
break;
case 'i':
case 'l':
((int32_t*)p)[index] = val;
break;
case 'I':
case 'L':
((uint32_t*)p)[index] = val;
break;
#if MICROPY_LONGINT_IMPL != MICROPY_LONGINT_IMPL_NONE
case 'q':
case 'Q':
assert(0);
((long long*)p)[index] = val;
break;
#endif
#if MICROPY_ENABLE_FLOAT
case 'f':
((float*)p)[index] = mp_obj_float_get(val_in);
break;
case 'd':
((double*)p)[index] = mp_obj_float_get(val_in);
break;
#endif
}
}
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