from libc.stdint cimport uint64_t
from libc.stdint cimport uint32_t
ctypedef unsigned char uchar
cdef struct Code:
uint64_t bits
char length
cdef Code bit_append(Code code, bint bit) nogil
cdef class BitArray:
cdef bytes data
cdef uchar byte
cdef uchar bit_of_byte
cdef uint32_t i
cdef int extend(self, uint64_t code, char n_bits) except -1
cdef uint32_t read32(self) except 0
