Mercurial > urweb

annotate src/mono_opt.sml @ 253:7f6620853c36

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Monoized a WHERE clause with a comparison
author Adam Chlipala <adamc@hcoop.net>
date Sun, 31 Aug 2008 14:27:01 -0400
parents 890a61991263
children d1b679dbbc25
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@253 82
adamc@253 83
adamc@253 84 val sqlifyInt = attrifyInt
adamc@253 85 val sqlifyFloat = attrifyFloat
adamc@253 86
adamc@253 87 fun sqlifyString s = "E'" ^ String.toString s ^ "'"
adamc@183 88
adamc@96 89 fun exp e =
adamc@96 90 case e of
adamc@96 91 EPrim (Prim.String s) =>
adamc@96 92 let
adamc@96 93 val (_, chs) =
adamc@96 94 CharVector.foldl (fn (ch, (lastSpace, chs)) =>
adamc@96 95 let
adamc@96 96 val isSpace = Char.isSpace ch
adamc@96 97 in
adamc@96 98 if isSpace andalso lastSpace then
adamc@96 99 (true, chs)
adamc@96 100 else
adamc@96 101 (isSpace, ch :: chs)
adamc@96 102 end)
adamc@96 103 (false, []) s
adamc@96 104 in
adamc@96 105 EPrim (Prim.String (String.implode (rev chs)))
adamc@96 106 end
adamc@96 107
adamc@96 108 | EStrcat ((EPrim (Prim.String s1), loc), (EPrim (Prim.String s2), _)) =>
adamc@96 109 let
adamc@96 110 val s =
adamc@96 111 if size s1 > 0 andalso size s2 > 0
adamc@96 112 andalso Char.isSpace (String.sub (s1, size s1 - 1))
adamc@96 113 andalso Char.isSpace (String.sub (s2, 0)) then
adamc@96 114 s1 ^ String.extract (s2, 1, NONE)
adamc@96 115 else
adamc@96 116 s1 ^ s2
adamc@96 117 in
adamc@96 118 EPrim (Prim.String s)
adamc@96 119 end
adamc@105 120
adamc@105 121 | EStrcat ((EPrim (Prim.String s1), loc), (EStrcat ((EPrim (Prim.String s2), _), rest), _)) =>
adamc@105 122 let
adamc@105 123 val s =
adamc@105 124 if size s1 > 0 andalso size s2 > 0
adamc@105 125 andalso Char.isSpace (String.sub (s1, size s1 - 1))
adamc@105 126 andalso Char.isSpace (String.sub (s2, 0)) then
adamc@105 127 s1 ^ String.extract (s2, 1, NONE)
adamc@105 128 else
adamc@105 129 s1 ^ s2
adamc@105 130 in
adamc@105 131 EStrcat ((EPrim (Prim.String s), loc), rest)
adamc@105 132 end
adamc@105 133
adamc@105 134 | EStrcat ((EStrcat (e1, e2), loc), e3) =>
adamc@105 135 optExp (EStrcat (e1, (EStrcat (e2, e3), loc)), loc)
adamc@105 136
adamc@106 137 | EWrite (EStrcat (e1, e2), loc) =>
adamc@106 138 ESeq ((optExp (EWrite e1, loc), loc),
adamc@106 139 (optExp (EWrite e2, loc), loc))
adamc@106 140
adamc@183 141 | ESeq ((EWrite (EPrim (Prim.String s1), _), loc),
adamc@183 142 (EWrite (EPrim (Prim.String s2), _), _)) =>
adamc@183 143 EWrite (EPrim (Prim.String (s1 ^ s2)), loc)
adamc@196 144 | ESeq ((EWrite (EPrim (Prim.String s1), _), loc),
adamc@196 145 (ESeq ((EWrite (EPrim (Prim.String s2), _), _),
adamc@196 146 e), _)) =>
adamc@196 147 ESeq ((EWrite (EPrim (Prim.String (s1 ^ s2)), loc), loc),
adamc@196 148 e)
adamc@183 149
adamc@135 150 | EFfiApp ("Basis", "htmlifyString", [(EPrim (Prim.String s), _)]) =>
adamc@135 151 EPrim (Prim.String (htmlifyString s))
adamc@135 152 | EWrite (EFfiApp ("Basis", "htmlifyString", [(EPrim (Prim.String s), _)]), loc) =>
adamc@135 153 EWrite (EPrim (Prim.String (htmlifyString s)), loc)
adamc@135 154 | EWrite (EFfiApp ("Basis", "htmlifyString", [e]), _) =>
adamc@135 155 EFfiApp ("Basis", "htmlifyString_w", [e])
adamc@196 156 | EFfiApp ("Basis", "htmlifyString_w", [(EPrim (Prim.String s), loc)]) =>
adamc@196 157 EWrite (EPrim (Prim.String (htmlifyString s)), loc)
adamc@135 158
adamc@107 159 | EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]) =>
adamc@107 160 EPrim (Prim.String (attrifyInt n))
adamc@107 161 | EWrite (EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]), loc) =>
adamc@107 162 EWrite (EPrim (Prim.String (attrifyInt n)), loc)
adamc@106 163 | EWrite (EFfiApp ("Basis", "attrifyInt", [e]), _) =>
adamc@106 164 EFfiApp ("Basis", "attrifyInt_w", [e])
adamc@107 165
adamc@107 166 | EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]) =>
adamc@107 167 EPrim (Prim.String (attrifyFloat n))
adamc@107 168 | EWrite (EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]), loc) =>
adamc@107 169 EWrite (EPrim (Prim.String (attrifyFloat n)), loc)
adamc@106 170 | EWrite (EFfiApp ("Basis", "attrifyFloat", [e]), _) =>
adamc@106 171 EFfiApp ("Basis", "attrifyFloat_w", [e])
adamc@107 172
adamc@107 173 | EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]) =>
adamc@107 174 EPrim (Prim.String (attrifyString s))
adamc@107 175 | EWrite (EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]), loc) =>
adamc@107 176 EWrite (EPrim (Prim.String (attrifyString s)), loc)
adamc@106 177 | EWrite (EFfiApp ("Basis", "attrifyString", [e]), _) =>
adamc@106 178 EFfiApp ("Basis", "attrifyString_w", [e])
adamc@106 179
adamc@120 180 | EFfiApp ("Basis", "urlifyInt", [(EPrim (Prim.Int n), _)]) =>
adamc@120 181 EPrim (Prim.String (urlifyInt n))
adamc@120 182 | EWrite (EFfiApp ("Basis", "urlifyInt", [(EPrim (Prim.Int n), _)]), loc) =>
adamc@120 183 EWrite (EPrim (Prim.String (urlifyInt n)), loc)
adamc@120 184 | EWrite (EFfiApp ("Basis", "urlifyInt", [e]), _) =>
adamc@120 185 EFfiApp ("Basis", "urlifyInt_w", [e])
adamc@120 186
adamc@120 187 | EFfiApp ("Basis", "urlifyFloat", [(EPrim (Prim.Float n), _)]) =>
adamc@120 188 EPrim (Prim.String (urlifyFloat n))
adamc@120 189 | EWrite (EFfiApp ("Basis", "urlifyFloat", [(EPrim (Prim.Float n), _)]), loc) =>
adamc@120 190 EWrite (EPrim (Prim.String (urlifyFloat n)), loc)
adamc@120 191 | EWrite (EFfiApp ("Basis", "urlifyFloat", [e]), _) =>
adamc@120 192 EFfiApp ("Basis", "urlifyFloat_w", [e])
adamc@120 193
adamc@120 194 | EFfiApp ("Basis", "urlifyString", [(EPrim (Prim.String s), _)]) =>
adamc@120 195 EPrim (Prim.String (urlifyString s))
adamc@120 196 | EWrite (EFfiApp ("Basis", "urlifyString", [(EPrim (Prim.String s), _)]), loc) =>
adamc@120 197 EWrite (EPrim (Prim.String (urlifyString s)), loc)
adamc@120 198 | EWrite (EFfiApp ("Basis", "urlifyString", [e]), _) =>
adamc@120 199 EFfiApp ("Basis", "urlifyString_w", [e])
adamc@120 200
adamc@188 201 | EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "True", ...}, NONE), _)]) =>
adamc@187 202 EPrim (Prim.String "1")
adamc@188 203 | EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "False", ...}, NONE), _)]) =>
adamc@187 204 EPrim (Prim.String "0")
adamc@188 205 | EWrite (EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "True", ...}, NONE), _)]), loc) =>
adamc@187 206 EWrite (EPrim (Prim.String "1"), loc)
adamc@188 207 | EWrite (EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "False", ...}, NONE), _)]), loc) =>
adamc@187 208 EWrite (EPrim (Prim.String "0"), loc)
adamc@187 209 | EWrite (EFfiApp ("Basis", "urlifyBool", [e]), _) =>
adamc@187 210 EFfiApp ("Basis", "urlifyBool_w", [e])
adamc@187 211
adamc@253 212 | EFfiApp ("Basis", "sqlifyInt", [(EPrim (Prim.Int n), _)]) =>
adamc@253 213 EPrim (Prim.String (sqlifyInt n))
adamc@253 214 | EFfiApp ("Basis", "sqlifyFloat", [(EPrim (Prim.Float n), _)]) =>
adamc@253 215 EPrim (Prim.String (sqlifyFloat n))
adamc@253 216 | EFfiApp ("Basis", "sqlifyBool", [b as (_, loc)]) =>
adamc@253 217 optExp (ECase (b,
adamc@253 218 [((PCon (Enum, PConFfi {mod = "Basis", datatyp = "bool", con = "True", arg = NONE}, NONE), loc),
adamc@253 219 (EPrim (Prim.String "TRUE"), loc)),
adamc@253 220 ((PCon (Enum, PConFfi {mod = "Basis", datatyp = "bool", con = "False", arg = NONE}, NONE), loc),
adamc@253 221 (EPrim (Prim.String "FALSE"), loc))],
adamc@253 222 {disc = (TFfi ("Basis", "bool"), loc),
adamc@253 223 result = (TFfi ("Basis", "string"), loc)}), loc)
adamc@253 224 | EFfiApp ("Basis", "sqlifyString", [(EPrim (Prim.String n), _)]) =>
adamc@253 225 EPrim (Prim.String (sqlifyString n))
adamc@253 226
adamc@184 227 | EWrite (ECase (discE, pes, {disc, ...}), loc) =>
adamc@184 228 optExp (ECase (discE,
adamc@184 229 map (fn (p, e) => (p, (EWrite e, loc))) pes,
adamc@184 230 {disc = disc,
adamc@184 231 result = (TRecord [], loc)}), loc)
adamc@184 232
adamc@96 233 | _ => e
adamc@96 234
adamc@105 235 and optExp e = #1 (U.Exp.map {typ = typ, exp = exp} e)
adamc@105 236
adamc@96 237 val optimize = U.File.map {typ = typ, exp = exp, decl = decl}
adamc@96 238
adamc@96 239 end