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annotate src/mono_opt.sml @ 198:ab86aa858e6c

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'Option' datatype encoding
author Adam Chlipala <adamc@hcoop.net>
date Sat, 09 Aug 2008 19:23:31 -0400
parents 890a61991263
children 7f6620853c36
rev   line source
adamc@96 1 (* Copyright (c) 2008, Adam Chlipala
adamc@96 2 * All rights reserved.
adamc@96 3 *
adamc@96 4 * Redistribution and use in source and binary forms, with or without
adamc@96 5 * modification, are permitted provided that the following conditions are met:
adamc@96 6 *
adamc@96 7 * - Redistributions of source code must retain the above copyright notice,
adamc@96 8 * this list of conditions and the following disclaimer.
adamc@96 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@96 10 * this list of conditions and the following disclaimer in the documentation
adamc@96 11 * and/or other materials provided with the distribution.
adamc@96 12 * - The names of contributors may not be used to endorse or promote products
adamc@96 13 * derived from this software without specific prior written permission.
adamc@96 14 *
adamc@96 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@96 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@96 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@96 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@96 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@96 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@96 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@96 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@96 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@96 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@96 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@96 26 *)
adamc@96 27
adamc@96 28 structure MonoOpt :> MONO_OPT = struct
adamc@96 29
adamc@96 30 open Mono
adamc@96 31 structure U = MonoUtil
adamc@96 32
adamc@96 33 fun typ t = t
adamc@96 34 fun decl d = d
adamc@96 35
adamc@107 36 fun attrifyInt n =
adamc@107 37 if n < 0 then
adamc@107 38 "-" ^ Int64.toString (Int64.~ n)
adamc@107 39 else
adamc@107 40 Int64.toString n
adamc@107 41
adamc@107 42 fun attrifyFloat n =
adamc@107 43 if n < 0.0 then
adamc@107 44 "-" ^ Real.toString (Real.~ n)
adamc@107 45 else
adamc@107 46 Real.toString n
adamc@107 47
adamc@107 48 val attrifyString = String.translate (fn #"\"" => "&quot;"
adamc@135 49 | #"&" => "&amp;"
adamc@107 50 | ch => if Char.isPrint ch then
adamc@107 51 str ch
adamc@107 52 else
adamc@107 53 "&#" ^ Int.toString (ord ch) ^ ";")
adamc@107 54
adamc@120 55 val urlifyInt = attrifyInt
adamc@120 56 val urlifyFloat = attrifyFloat
adamc@120 57
adamc@135 58 val htmlifyString = String.translate (fn ch => case ch of
adamc@135 59 #"<" => "&lt;"
adamc@135 60 | #"&" => "&amp;"
adamc@135 61 | _ =>
adamc@135 62 if Char.isPrint ch orelse Char.isSpace ch then
adamc@135 63 str ch
adamc@135 64 else
adamc@135 65 "&#" ^ Int.toString (ord ch) ^ ";")
adamc@135 66
adamc@120 67 fun hexIt ch =
adamc@120 68 let
adamc@120 69 val s = Int.fmt StringCvt.HEX (ord ch)
adamc@120 70 in
adamc@120 71 case size s of
adamc@120 72 0 => "00"
adamc@120 73 | 1 => "0" ^ s
adamc@120 74 | _ => s
adamc@120 75 end
adamc@120 76
adamc@120 77 val urlifyString = String.translate (fn #" " => "+"
adamc@120 78 | ch => if Char.isAlphaNum ch then
adamc@120 79 str ch
adamc@120 80 else
adamc@120 81 "%" ^ hexIt ch)
adamc@183 82
adamc@96 83 fun exp e =
adamc@96 84 case e of
adamc@96 85 EPrim (Prim.String s) =>
adamc@96 86 let
adamc@96 87 val (_, chs) =
adamc@96 88 CharVector.foldl (fn (ch, (lastSpace, chs)) =>
adamc@96 89 let
adamc@96 90 val isSpace = Char.isSpace ch
adamc@96 91 in
adamc@96 92 if isSpace andalso lastSpace then
adamc@96 93 (true, chs)
adamc@96 94 else
adamc@96 95 (isSpace, ch :: chs)
adamc@96 96 end)
adamc@96 97 (false, []) s
adamc@96 98 in
adamc@96 99 EPrim (Prim.String (String.implode (rev chs)))
adamc@96 100 end
adamc@96 101
adamc@96 102 | EStrcat ((EPrim (Prim.String s1), loc), (EPrim (Prim.String s2), _)) =>
adamc@96 103 let
adamc@96 104 val s =
adamc@96 105 if size s1 > 0 andalso size s2 > 0
adamc@96 106 andalso Char.isSpace (String.sub (s1, size s1 - 1))
adamc@96 107 andalso Char.isSpace (String.sub (s2, 0)) then
adamc@96 108 s1 ^ String.extract (s2, 1, NONE)
adamc@96 109 else
adamc@96 110 s1 ^ s2
adamc@96 111 in
adamc@96 112 EPrim (Prim.String s)
adamc@96 113 end
adamc@105 114
adamc@105 115 | EStrcat ((EPrim (Prim.String s1), loc), (EStrcat ((EPrim (Prim.String s2), _), rest), _)) =>
adamc@105 116 let
adamc@105 117 val s =
adamc@105 118 if size s1 > 0 andalso size s2 > 0
adamc@105 119 andalso Char.isSpace (String.sub (s1, size s1 - 1))
adamc@105 120 andalso Char.isSpace (String.sub (s2, 0)) then
adamc@105 121 s1 ^ String.extract (s2, 1, NONE)
adamc@105 122 else
adamc@105 123 s1 ^ s2
adamc@105 124 in
adamc@105 125 EStrcat ((EPrim (Prim.String s), loc), rest)
adamc@105 126 end
adamc@105 127
adamc@105 128 | EStrcat ((EStrcat (e1, e2), loc), e3) =>
adamc@105 129 optExp (EStrcat (e1, (EStrcat (e2, e3), loc)), loc)
adamc@105 130
adamc@106 131 | EWrite (EStrcat (e1, e2), loc) =>
adamc@106 132 ESeq ((optExp (EWrite e1, loc), loc),
adamc@106 133 (optExp (EWrite e2, loc), loc))
adamc@106 134
adamc@183 135 | ESeq ((EWrite (EPrim (Prim.String s1), _), loc),
adamc@183 136 (EWrite (EPrim (Prim.String s2), _), _)) =>
adamc@183 137 EWrite (EPrim (Prim.String (s1 ^ s2)), loc)
adamc@196 138 | ESeq ((EWrite (EPrim (Prim.String s1), _), loc),
adamc@196 139 (ESeq ((EWrite (EPrim (Prim.String s2), _), _),
adamc@196 140 e), _)) =>
adamc@196 141 ESeq ((EWrite (EPrim (Prim.String (s1 ^ s2)), loc), loc),
adamc@196 142 e)
adamc@183 143
adamc@135 144 | EFfiApp ("Basis", "htmlifyString", [(EPrim (Prim.String s), _)]) =>
adamc@135 145 EPrim (Prim.String (htmlifyString s))
adamc@135 146 | EWrite (EFfiApp ("Basis", "htmlifyString", [(EPrim (Prim.String s), _)]), loc) =>
adamc@135 147 EWrite (EPrim (Prim.String (htmlifyString s)), loc)
adamc@135 148 | EWrite (EFfiApp ("Basis", "htmlifyString", [e]), _) =>
adamc@135 149 EFfiApp ("Basis", "htmlifyString_w", [e])
adamc@196 150 | EFfiApp ("Basis", "htmlifyString_w", [(EPrim (Prim.String s), loc)]) =>
adamc@196 151 EWrite (EPrim (Prim.String (htmlifyString s)), loc)
adamc@135 152
adamc@107 153 | EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]) =>
adamc@107 154 EPrim (Prim.String (attrifyInt n))
adamc@107 155 | EWrite (EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]), loc) =>
adamc@107 156 EWrite (EPrim (Prim.String (attrifyInt n)), loc)
adamc@106 157 | EWrite (EFfiApp ("Basis", "attrifyInt", [e]), _) =>
adamc@106 158 EFfiApp ("Basis", "attrifyInt_w", [e])
adamc@107 159
adamc@107 160 | EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]) =>
adamc@107 161 EPrim (Prim.String (attrifyFloat n))
adamc@107 162 | EWrite (EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]), loc) =>
adamc@107 163 EWrite (EPrim (Prim.String (attrifyFloat n)), loc)
adamc@106 164 | EWrite (EFfiApp ("Basis", "attrifyFloat", [e]), _) =>
adamc@106 165 EFfiApp ("Basis", "attrifyFloat_w", [e])
adamc@107 166
adamc@107 167 | EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]) =>
adamc@107 168 EPrim (Prim.String (attrifyString s))
adamc@107 169 | EWrite (EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]), loc) =>
adamc@107 170 EWrite (EPrim (Prim.String (attrifyString s)), loc)
adamc@106 171 | EWrite (EFfiApp ("Basis", "attrifyString", [e]), _) =>
adamc@106 172 EFfiApp ("Basis", "attrifyString_w", [e])
adamc@106 173
adamc@120 174 | EFfiApp ("Basis", "urlifyInt", [(EPrim (Prim.Int n), _)]) =>
adamc@120 175 EPrim (Prim.String (urlifyInt n))
adamc@120 176 | EWrite (EFfiApp ("Basis", "urlifyInt", [(EPrim (Prim.Int n), _)]), loc) =>
adamc@120 177 EWrite (EPrim (Prim.String (urlifyInt n)), loc)
adamc@120 178 | EWrite (EFfiApp ("Basis", "urlifyInt", [e]), _) =>
adamc@120 179 EFfiApp ("Basis", "urlifyInt_w", [e])
adamc@120 180
adamc@120 181 | EFfiApp ("Basis", "urlifyFloat", [(EPrim (Prim.Float n), _)]) =>
adamc@120 182 EPrim (Prim.String (urlifyFloat n))
adamc@120 183 | EWrite (EFfiApp ("Basis", "urlifyFloat", [(EPrim (Prim.Float n), _)]), loc) =>
adamc@120 184 EWrite (EPrim (Prim.String (urlifyFloat n)), loc)
adamc@120 185 | EWrite (EFfiApp ("Basis", "urlifyFloat", [e]), _) =>
adamc@120 186 EFfiApp ("Basis", "urlifyFloat_w", [e])
adamc@120 187
adamc@120 188 | EFfiApp ("Basis", "urlifyString", [(EPrim (Prim.String s), _)]) =>
adamc@120 189 EPrim (Prim.String (urlifyString s))
adamc@120 190 | EWrite (EFfiApp ("Basis", "urlifyString", [(EPrim (Prim.String s), _)]), loc) =>
adamc@120 191 EWrite (EPrim (Prim.String (urlifyString s)), loc)
adamc@120 192 | EWrite (EFfiApp ("Basis", "urlifyString", [e]), _) =>
adamc@120 193 EFfiApp ("Basis", "urlifyString_w", [e])
adamc@120 194
adamc@188 195 | EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "True", ...}, NONE), _)]) =>
adamc@187 196 EPrim (Prim.String "1")
adamc@188 197 | EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "False", ...}, NONE), _)]) =>
adamc@187 198 EPrim (Prim.String "0")
adamc@188 199 | EWrite (EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "True", ...}, NONE), _)]), loc) =>
adamc@187 200 EWrite (EPrim (Prim.String "1"), loc)
adamc@188 201 | EWrite (EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "False", ...}, NONE), _)]), loc) =>
adamc@187 202 EWrite (EPrim (Prim.String "0"), loc)
adamc@187 203 | EWrite (EFfiApp ("Basis", "urlifyBool", [e]), _) =>
adamc@187 204 EFfiApp ("Basis", "urlifyBool_w", [e])
adamc@187 205
adamc@184 206 | EWrite (ECase (discE, pes, {disc, ...}), loc) =>
adamc@184 207 optExp (ECase (discE,
adamc@184 208 map (fn (p, e) => (p, (EWrite e, loc))) pes,
adamc@184 209 {disc = disc,
adamc@184 210 result = (TRecord [], loc)}), loc)
adamc@184 211
adamc@96 212 | _ => e
adamc@96 213
adamc@105 214 and optExp e = #1 (U.Exp.map {typ = typ, exp = exp} e)
adamc@105 215
adamc@96 216 val optimize = U.File.map {typ = typ, exp = exp, decl = decl}
adamc@96 217
adamc@96 218 end