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def Cursor.region.if

bend-kit-bytes@0.3.3.0 · bytes.bend:849

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

849# On success, read inside the region, then leave with the returned affine limit.
850def Cursor.region.if(ok: Bool, c: Cursor, +n: U32) -> Cursor & Maybe<&1, CursorLimit>:
851  match ok:
852    case False{}:
853      (c, None{})
854    case True{}:
855      Cursor{b, +pos, start, end} = c
856      +resume = (pos + n : U32)
857      (Cursor{b, pos, pos, resume}, Some{CursorLimit{resume, start, end}})

Uses (8)

Used by (1)