HCoop / hcoop / debian / mlton.git / blame
| Commit | Line | Data |
|---|---|---|
| 7f918cf1 CE |
1 | (* Copyright (C) 1999-2007 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 | signature STRING_ARG = | |
| 10 | sig | |
| 11 | structure Char: CHAR_EXTRA | |
| 12 | structure CharVector: EQTYPE_MONO_VECTOR_EXTRA | |
| 13 | sharing type Char.char = CharVector.elem | |
| 14 | sharing type Char.string = CharVector.vector | |
| 15 | end | |
| 16 | ||
| 17 | functor StringFn(Arg : STRING_ARG) | |
| 18 | :> STRING_EXTRA | |
| 19 | where type char = Arg.CharVector.elem | |
| 20 | where type string = Arg.CharVector.vector | |
| 21 | where type array = Arg.CharVector.array = | |
| 22 | struct | |
| 23 | open Arg | |
| 24 | open CharVector | |
| 25 | structure CharVectorSlice = MonoVectorSlice | |
| 26 | ||
| 27 | type char = elem | |
| 28 | type string = vector | |
| 29 | ||
| 30 | val new = vector | |
| 31 | fun str c = new (1, c) | |
| 32 | ||
| 33 | val maxSize = maxLen | |
| 34 | val size = length | |
| 35 | val op ^ = append | |
| 36 | val implode = fromList | |
| 37 | val explode = toList | |
| 38 | ||
| 39 | fun extract (s, start, len) = | |
| 40 | CharVectorSlice.vector (CharVectorSlice.slice (s, start, len)) | |
| 41 | fun substring (s, start, len) = extract (s, start, SOME len) | |
| 42 | ||
| 43 | val toLower = translate (str o Char.toLower) | |
| 44 | ||
| 45 | local | |
| 46 | fun make f = f (op = : char * char -> bool) | |
| 47 | in | |
| 48 | val isPrefix = make isPrefix | |
| 49 | val isSubstring = make isSubvector | |
| 50 | val isSuffix = make isSuffix | |
| 51 | end | |
| 52 | val compare = collate Char.compare | |
| 53 | local | |
| 54 | structure S = StringComparisons (type t = string | |
| 55 | val compare = compare) | |
| 56 | in | |
| 57 | open S | |
| 58 | end | |
| 59 | ||
| 60 | fun Stranslate f = String.fromPoly o Vector.translate f o toPoly | |
| 61 | ||
| 62 | val toString = Stranslate Char.toString | |
| 63 | val toCString = Stranslate Char.toCString | |
| 64 | ||
| 65 | val scan = | |
| 66 | fn reader => | |
| 67 | let | |
| 68 | fun loop (state, cs) = | |
| 69 | case Char.scan reader state of | |
| 70 | NONE => SOME (implode (rev cs), | |
| 71 | Char.formatSequences reader state) | |
| 72 | | SOME (c, state) => loop (state, c :: cs) | |
| 73 | in | |
| 74 | fn state => loop (state, []) | |
| 75 | end | |
| 76 | ||
| 77 | val fromString = StringCvt.scanString scan | |
| 78 | ||
| 79 | fun scanString scanChar reader = | |
| 80 | fn state => | |
| 81 | Option.map (fn (cs, state) => (implode cs, state)) | |
| 82 | (Reader.list (scanChar reader) state) | |
| 83 | ||
| 84 | val fromCString = StringCvt.scanString (scanString Char.scanC) | |
| 85 | ||
| 86 | val null = str (Char.chr 0) | |
| 87 | fun nullTerm s = s ^ null | |
| 88 | end | |
| 89 | ||
| 90 | structure StringArg : STRING_ARG = | |
| 91 | struct | |
| 92 | structure Char = Char | |
| 93 | structure CharVector = CharVector | |
| 94 | end | |
| 95 | ||
| 96 | structure WideStringArg : STRING_ARG = | |
| 97 | struct | |
| 98 | structure Char = WideChar | |
| 99 | structure CharVector = WideCharVector | |
| 100 | end | |
| 101 | ||
| 102 | structure String : STRING_EXTRA = StringFn(StringArg) | |
| 103 | structure WideString : STRING_EXTRA = StringFn(WideStringArg) |