Bytes.base64.digit: def of gralha-bytes@0.1.0.1
Import: import gralha-bytes@0.1.0.1/bytes.bend as Bytes
Lines 89-92 of gralha-bytes@0.1.0.1/bytes.bend: https://jend.leeeet.dev/read.txt?path=gralha-bytes@0.1.0.1/bytes.bend&start_line=89&end_line=92

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U

def base64.digit(+c: U32) -> U32:
  U.choose(U32, U32.is_ge(c, 65) && U32.is_le(c, 90), (c - 65 : U32),
    U.choose(U32, U32.is_ge(c, 97) && U32.is_le(c, 122), (c - 71 : U32),
      U.choose(U32, U32.is_ge(c, 48) && U32.is_le(c, 57), (c + 4 : U32), U.choose(U32, U32.is_eq(c, 43), 62, U.choose(U32, U32.is_eq(c, 47), 63, 64)))))

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_ge
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.is_le
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=choose