#!/usr/bin/env python3
from riscv import byteify, bit_concat
from subx import clean, classify, parse_bits, format_instr

def pack(iter):
    for line in iter:
        line = clean(line)
        if line == '':
            continue

        type = classify(line)

        if type == 'segment' or type == 'label':
            yield line
        else:
            fields = parse_bits(line)
            total = bit_concat(*fields)

            if total[1] != 32:
                raise ValueError("instruction parts do not add up to 32 bit!")

            yield format_instr(byteify(total))

if __name__ == '__main__':
    import sys
    for line in pack(sys.stdin):
        print(line)

import unittest
class TestE2E(unittest.TestCase):
    def test_e2e(self):
        from io import StringIO
        from textwrap import dedent
        inp = dedent('''\
            == code 0x80000000
            37/7 05/5 10010/20
            13/7 06/5 00/3 00/5 48/12
            23/7 00/5 02/3 05/5 06/5 00/7
            13/7 06/5 00/3 00/5 65/12
            23/7 00/5 02/3 05/5 06/5 00/7
            13/7 06/5 00/3 00/5 6c/12
            23/7 00/5 02/3 05/5 06/5 00/7
            13/7 06/5 00/3 00/5 6c/12
            23/7 00/5 02/3 05/5 06/5 00/7
            13/7 06/5 00/3 00/5 6f/12
            23/7 00/5 02/3 05/5 06/5 00/7
            13/7 06/5 00/3 00/5 0a/12
            23/7 00/5 02/3 05/5 06/5 00/7
            6f/7 00/5 ff/8 01/1 3e6/10 1/1
        ''')

        out = dedent('''\
            == code 0x80000000
            b7 02 01 10
            13 03 80 04
            23 a0 62 00
            13 03 50 06
            23 a0 62 00
            13 03 c0 06
            23 a0 62 00
            13 03 c0 06
            23 a0 62 00
            13 03 f0 06
            23 a0 62 00
            13 03 a0 00
            23 a0 62 00
            6f f0 df fc
        ''')

        got = ''
        for line in pack(StringIO(inp)):
            got += line + '\n'

        self.assertEqual(got, out)