| 1 | (* Copyright (C) 1999-2006 Henry Cejtin, Matthew Fluet, Suresh |
| 2 | * Jagannathan, and Stephen Weeks. |
| 3 | * Copyright (C) 1997-2000 NEC Research Institute. |
| 4 | * |
| 5 | * MLton is released under a BSD-style license. |
| 6 | * See the file MLton-LICENSE for details. |
| 7 | *) |
| 8 | |
| 9 | (* Primitive names are special -- see atoms/prim.fun. *) |
| 10 | |
| 11 | structure Primitive = struct |
| 12 | |
| 13 | open Primitive |
| 14 | |
| 15 | (* NullString is used for strings that must be passed to C and hence must be |
| 16 | * null terminated. |
| 17 | *) |
| 18 | structure NullString8 :> |
| 19 | sig |
| 20 | type t |
| 21 | |
| 22 | val empty: t |
| 23 | val fromString: String8.string -> t |
| 24 | end = |
| 25 | struct |
| 26 | type t = String8.string |
| 27 | |
| 28 | fun fromString s = |
| 29 | if #"\000" = Vector.subUnsafe (s, SeqIndex.- (Vector.length s, 1)) |
| 30 | then s |
| 31 | else raise Exn.Fail8 "NullString.fromString" |
| 32 | |
| 33 | val empty = fromString "\000" |
| 34 | end |
| 35 | structure NullString8Array = struct type t = NullString8.t array end |
| 36 | |
| 37 | end |