Tar.frame.region: def of bend-kit-tar@0.3.0.0
Import: import bend-kit-tar@0.3.0.0/tar.bend as Tar
Lines 461-469 of bend-kit-tar@0.3.0.0/tar.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-tar@0.3.0.0/tar.bend&start_line=461&end_line=469

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

# First bound the complete padded body, then restrict PAX to the exact payload.
# Limits are left in reverse order; neither region slices or copies the backing buffer.
def frame.region(+t: U32, +size: U32, +pd: U32, pax: Pax, acc: List<&1, Entry>, r: Bytes.Cursor & Maybe<&1, Bytes.CursorLimit>) -> Bytes.Cursor & St:
  (c, m) = r
  match m:
    case Some{outer}:
      frame.payload(t, size, (pd - size : U32), outer, pax, acc, Bytes.Cursor.region(c, size))
    case None{}:
      (c, SFail{})

Uses (13):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  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.sub
  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-bytes@0.3.3.0/bytes.bend&name=Cursor.region
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=CursorLimit
  https://jend.leeeet.dev/definition.txt?path=bend-kit-tar@0.3.0.0/tar.bend&name=Entry
  https://jend.leeeet.dev/definition.txt?path=bend-kit-tar@0.3.0.0/tar.bend&name=Pax
  https://jend.leeeet.dev/definition.txt?path=bend-kit-tar@0.3.0.0/tar.bend&name=St
  https://jend.leeeet.dev/definition.txt?path=bend-kit-tar@0.3.0.0/tar.bend&name=frame.payload