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static inline int unpack_container_header(unpack_context* ctx, const char* data, Py_ssize_t len, Py_ssize_t* off)
{
assert(len >= *off);
uint32_t size;
const unsigned char *const p = (unsigned char*)data + *off;
#define inc_offset(inc) \
if (len - *off < inc) \
return 0; \
*off += inc;
switch (*p) {
case var_offset:
inc_offset(3);
size = _msgpack_load16(uint16_t, p + 1);
break;
case var_offset + 1:
inc_offset(5);
size = _msgpack_load32(uint32_t, p + 1);
break;
#ifdef USE_CASE_RANGE
case fixed_offset + 0x0 ... fixed_offset + 0xf:
#else
case fixed_offset + 0x0:
case fixed_offset + 0x1:
case fixed_offset + 0x2:
case fixed_offset + 0x3:
case fixed_offset + 0x4:
case fixed_offset + 0x5:
case fixed_offset + 0x6:
case fixed_offset + 0x7:
case fixed_offset + 0x8:
case fixed_offset + 0x9:
case fixed_offset + 0xa:
case fixed_offset + 0xb:
case fixed_offset + 0xc:
case fixed_offset + 0xd:
case fixed_offset + 0xe:
case fixed_offset + 0xf:
#endif
++*off;
size = ((unsigned int)*p) & 0x0f;
break;
default:
PyErr_SetString(PyExc_ValueError, "Unexpected type header on stream");
return -1;
}
unpack_callback_uint32(&ctx->user, size, &ctx->stack[0].obj);
return 1;
}
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