Protobuf.varint.go: def of bend-kit-protobuf@0.2.0.0
Import: import bend-kit-protobuf@0.2.0.0/protobuf.bend as Protobuf
Lines 109-128 of bend-kit-protobuf@0.2.0.0/protobuf.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&start_line=109&end_line=128

import Base
import bend-kit-bytes@0.3.3.0/bytes.bend as B

# The last byte must fit its word; its continuation bit is never allowed.
def varint.go(fuel: Nat, r: B.Cursor & Maybe<&2, VarintByte>, +i: U32, +last: U32, +max_last: U32, w: Word64) -> Result<&2, &1, Error, B.Cursor & Word64>:
  match fuel:
    case 0n:
      Fail{Malformed{}}
    case 1n+p:
      (c, v) = r
      match v:
        case None{}:
          Fail{Incomplete{}}
        case Some{VarintByte{bad, done, b}}:
          match bad:
            case True{}:
              Fail{Malformed{}}
            case False{}:
              match done:
                case True{}:
                  Done{(c, varint.add(i, (b .&. 127 : U32), w))}
                case False{}:
                  varint.go(p, varint.read((i + 1 : U32), last, max_last, c), (i + 1 : U32), last, max_last, varint.add(i, (b .&. 127 : U32), w))

Uses (15):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  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.and
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=Cursor
  https://jend.leeeet.dev/definition.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&name=VarintByte
  https://jend.leeeet.dev/definition.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&name=Word64
  https://jend.leeeet.dev/definition.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&name=varint.add
  https://jend.leeeet.dev/definition.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&name=varint.read