| 1 | (* Copyright (C) 1999-2006 Henry Cejtin, Matthew Fluet, Suresh |
| 2 | * Jagannathan, and Stephen Weeks. |
| 3 | * |
| 4 | * MLton is released under a BSD-style license. |
| 5 | * See the file MLton-LICENSE for details. |
| 6 | *) |
| 7 | |
| 8 | structure Substring: SUBSTRING = |
| 9 | struct |
| 10 | open Pervasive.Substring |
| 11 | |
| 12 | type t = substring |
| 13 | |
| 14 | val length = size |
| 15 | |
| 16 | val substring = |
| 17 | fn (s, {start, length}) => substring (s, start, length) |
| 18 | |
| 19 | val base = |
| 20 | fn ss => let val (s, start, length) = base ss |
| 21 | in (s, {start = start, length = length}) |
| 22 | end |
| 23 | |
| 24 | val toString = string |
| 25 | |
| 26 | val layout = String1.layout o toString |
| 27 | |
| 28 | fun endOf ss = |
| 29 | let |
| 30 | val (_, {start, length}) = base ss |
| 31 | in |
| 32 | start + length |
| 33 | end |
| 34 | end |