Mercurial > urweb

annotate src/prim.sml @ 2284:472b4504aef2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Actually use transactional machinery for flushes this time.
author Ziv Scully <ziv@mit.edu>
date Thu, 12 Nov 2015 11:44:21 -0500
parents 4d64af730e35
children
rev   line source
adam@2048 1 (* Copyright (c) 2008, 2014, Adam Chlipala
adamc@14 2 * All rights reserved.
adamc@14 3 *
adamc@14 4 * Redistribution and use in source and binary forms, with or without
adamc@14 5 * modification, are permitted provided that the following conditions are met:
adamc@14 6 *
adamc@14 7 * - Redistributions of source code must retain the above copyright notice,
adamc@14 8 * this list of conditions and the following disclaimer.
adamc@14 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@14 10 * this list of conditions and the following disclaimer in the documentation
adamc@14 11 * and/or other materials provided with the distribution.
adamc@14 12 * - The names of contributors may not be used to endorse or promote products
adamc@14 13 * derived from this software without specific prior written permission.
adamc@14 14 *
adamc@14 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@14 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@14 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@14 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@14 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@14 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@14 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@14 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@14 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@14 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@14 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@14 26 *)
adamc@14 27
adamc@14 28 structure Prim :> PRIM = struct
adamc@14 29
adam@2048 30 datatype string_mode = Normal | Html
adam@2048 31
adamc@14 32 datatype t =
adamc@14 33 Int of Int64.int
adamc@14 34 | Float of Real64.real
adam@2048 35 | String of string_mode * string
adamc@821 36 | Char of char
adamc@14 37
adamc@14 38 open Print.PD
adamc@14 39 open Print
adamc@14 40
adamc@14 41 fun p_t t =
adamc@14 42 case t of
adamc@14 43 Int n => string (Int64.toString n)
adamc@14 44 | Float n => string (Real64.toString n)
adam@2048 45 | String (_, s) => box [string "\"", string (String.toString s), string "\""]
adamc@942 46 | Char ch => box [string "#\"", string (String.toString (String.str ch)), string "\""]
adamc@14 47
adamc@276 48 fun int2s n =
adamc@276 49 if Int64.compare (n, Int64.fromInt 0) = LESS then
adamc@276 50 "-" ^ Int64.toString (Int64.~ n) ^ "LL"
adamc@276 51 else
adamc@276 52 Int64.toString n ^ "LL"
adamc@276 53
adamc@582 54 fun int2s' n =
adamc@582 55 if Int64.compare (n, Int64.fromInt 0) = LESS then
adamc@582 56 "-" ^ Int64.toString (Int64.~ n)
adamc@582 57 else
adamc@582 58 Int64.toString n
adamc@582 59
adam@1468 60 val float2s = String.translate (fn #"~" => "-" | ch => str ch) o Real64.toString
adamc@276 61
adamc@567 62 fun toString t =
adamc@567 63 case t of
adamc@582 64 Int n => int2s' n
adamc@567 65 | Float n => float2s n
adam@2048 66 | String (_, s) => s
adamc@821 67 | Char ch => str ch
adamc@567 68
adamc@1053 69 fun pad (n, ch, s) =
adamc@1053 70 if size s >= n then
adamc@1053 71 s
adamc@1053 72 else
adamc@1053 73 str ch ^ pad (n-1, ch, s)
adamc@1053 74
adam@1656 75 fun quoteDouble ch =
adam@1656 76 case ch of
adam@1656 77 #"'" => str ch
adam@1656 78 | _ => Char.toCString ch
adam@1656 79
adam@1656 80 fun toCChar ch =
adam@1656 81 case ch of
adam@1656 82 #"\"" => str ch
adam@1656 83 | _ => Char.toCString ch
adam@1656 84
adam@1656 85 val toCString = String.translate quoteDouble
adam@1656 86
adamc@276 87 fun p_t_GCC t =
adamc@276 88 case t of
adamc@276 89 Int n => string (int2s n)
adamc@276 90 | Float n => string (float2s n)
adam@2048 91 | String (_, s) => box [string "\"", string (toCString s), string "\""]
adam@1656 92 | Char ch => box [string "'", string (toCChar ch), string "'"]
adamc@276 93
adamc@183 94 fun equal x =
adamc@183 95 case x of
adamc@183 96 (Int n1, Int n2) => n1 = n2
adamc@183 97 | (Float n1, Float n2) => Real64.== (n1, n2)
adam@2048 98 | (String (_, s1), String (_, s2)) => s1 = s2
adamc@821 99 | (Char ch1, Char ch2) => ch1 = ch2
adamc@183 100
adamc@183 101 | _ => false
adamc@183 102
adamc@479 103 fun compare (p1, p2) =
adamc@479 104 case (p1, p2) of
adamc@479 105 (Int n1, Int n2) => Int64.compare (n1, n2)
adamc@479 106 | (Int _, _) => LESS
adamc@479 107 | (_, Int _) => GREATER
adamc@479 108
adamc@479 109 | (Float n1, Float n2) => Real64.compare (n1, n2)
adamc@479 110 | (Float _, _) => LESS
adamc@821 111 | (_, Float _) => GREATER
adamc@479 112
adam@2048 113 | (String (_, n1), String (_, n2)) => String.compare (n1, n2)
adamc@821 114 | (String _, _) => LESS
adamc@821 115 | (_, String _) => GREATER
adamc@821 116
adamc@821 117 | (Char ch1, Char ch2) => Char.compare (ch1, ch2)
adamc@479 118
adamc@14 119 end