Mercurial > urweb
view src/mono_opt.sml @ 229:016d71e878c1
Relational operators; string literals for SQL
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Thu, 21 Aug 2008 15:27:04 -0400 |
| parents | 890a61991263 |
| children | 7f6620853c36 |
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(* Copyright (c) 2008, Adam Chlipala * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - The names of contributors may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. *) structure MonoOpt :> MONO_OPT = struct open Mono structure U = MonoUtil fun typ t = t fun decl d = d fun attrifyInt n = if n < 0 then "-" ^ Int64.toString (Int64.~ n) else Int64.toString n fun attrifyFloat n = if n < 0.0 then "-" ^ Real.toString (Real.~ n) else Real.toString n val attrifyString = String.translate (fn #"\"" => """ | #"&" => "&" | ch => if Char.isPrint ch then str ch else "&#" ^ Int.toString (ord ch) ^ ";") val urlifyInt = attrifyInt val urlifyFloat = attrifyFloat val htmlifyString = String.translate (fn ch => case ch of #"<" => "<" | #"&" => "&" | _ => if Char.isPrint ch orelse Char.isSpace ch then str ch else "&#" ^ Int.toString (ord ch) ^ ";") fun hexIt ch = let val s = Int.fmt StringCvt.HEX (ord ch) in case size s of 0 => "00" | 1 => "0" ^ s | _ => s end val urlifyString = String.translate (fn #" " => "+" | ch => if Char.isAlphaNum ch then str ch else "%" ^ hexIt ch) fun exp e = case e of EPrim (Prim.String s) => let val (_, chs) = CharVector.foldl (fn (ch, (lastSpace, chs)) => let val isSpace = Char.isSpace ch in if isSpace andalso lastSpace then (true, chs) else (isSpace, ch :: chs) end) (false, []) s in EPrim (Prim.String (String.implode (rev chs))) end | EStrcat ((EPrim (Prim.String s1), loc), (EPrim (Prim.String s2), _)) => let val s = if size s1 > 0 andalso size s2 > 0 andalso Char.isSpace (String.sub (s1, size s1 - 1)) andalso Char.isSpace (String.sub (s2, 0)) then s1 ^ String.extract (s2, 1, NONE) else s1 ^ s2 in EPrim (Prim.String s) end | EStrcat ((EPrim (Prim.String s1), loc), (EStrcat ((EPrim (Prim.String s2), _), rest), _)) => let val s = if size s1 > 0 andalso size s2 > 0 andalso Char.isSpace (String.sub (s1, size s1 - 1)) andalso Char.isSpace (String.sub (s2, 0)) then s1 ^ String.extract (s2, 1, NONE) else s1 ^ s2 in EStrcat ((EPrim (Prim.String s), loc), rest) end | EStrcat ((EStrcat (e1, e2), loc), e3) => optExp (EStrcat (e1, (EStrcat (e2, e3), loc)), loc) | EWrite (EStrcat (e1, e2), loc) => ESeq ((optExp (EWrite e1, loc), loc), (optExp (EWrite e2, loc), loc)) | ESeq ((EWrite (EPrim (Prim.String s1), _), loc), (EWrite (EPrim (Prim.String s2), _), _)) => EWrite (EPrim (Prim.String (s1 ^ s2)), loc) | ESeq ((EWrite (EPrim (Prim.String s1), _), loc), (ESeq ((EWrite (EPrim (Prim.String s2), _), _), e), _)) => ESeq ((EWrite (EPrim (Prim.String (s1 ^ s2)), loc), loc), e) | EFfiApp ("Basis", "htmlifyString", [(EPrim (Prim.String s), _)]) => EPrim (Prim.String (htmlifyString s)) | EWrite (EFfiApp ("Basis", "htmlifyString", [(EPrim (Prim.String s), _)]), loc) => EWrite (EPrim (Prim.String (htmlifyString s)), loc) | EWrite (EFfiApp ("Basis", "htmlifyString", [e]), _) => EFfiApp ("Basis", "htmlifyString_w", [e]) | EFfiApp ("Basis", "htmlifyString_w", [(EPrim (Prim.String s), loc)]) => EWrite (EPrim (Prim.String (htmlifyString s)), loc) | EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]) => EPrim (Prim.String (attrifyInt n)) | EWrite (EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]), loc) => EWrite (EPrim (Prim.String (attrifyInt n)), loc) | EWrite (EFfiApp ("Basis", "attrifyInt", [e]), _) => EFfiApp ("Basis", "attrifyInt_w", [e]) | EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]) => EPrim (Prim.String (attrifyFloat n)) | EWrite (EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]), loc) => EWrite (EPrim (Prim.String (attrifyFloat n)), loc) | EWrite (EFfiApp ("Basis", "attrifyFloat", [e]), _) => EFfiApp ("Basis", "attrifyFloat_w", [e]) | EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]) => EPrim (Prim.String (attrifyString s)) | EWrite (EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]), loc) => EWrite (EPrim (Prim.String (attrifyString s)), loc) | EWrite (EFfiApp ("Basis", "attrifyString", [e]), _) => EFfiApp ("Basis", "attrifyString_w", [e]) | EFfiApp ("Basis", "urlifyInt", [(EPrim (Prim.Int n), _)]) => EPrim (Prim.String (urlifyInt n)) | EWrite (EFfiApp ("Basis", "urlifyInt", [(EPrim (Prim.Int n), _)]), loc) => EWrite (EPrim (Prim.String (urlifyInt n)), loc) | EWrite (EFfiApp ("Basis", "urlifyInt", [e]), _) => EFfiApp ("Basis", "urlifyInt_w", [e]) | EFfiApp ("Basis", "urlifyFloat", [(EPrim (Prim.Float n), _)]) => EPrim (Prim.String (urlifyFloat n)) | EWrite (EFfiApp ("Basis", "urlifyFloat", [(EPrim (Prim.Float n), _)]), loc) => EWrite (EPrim (Prim.String (urlifyFloat n)), loc) | EWrite (EFfiApp ("Basis", "urlifyFloat", [e]), _) => EFfiApp ("Basis", "urlifyFloat_w", [e]) | EFfiApp ("Basis", "urlifyString", [(EPrim (Prim.String s), _)]) => EPrim (Prim.String (urlifyString s)) | EWrite (EFfiApp ("Basis", "urlifyString", [(EPrim (Prim.String s), _)]), loc) => EWrite (EPrim (Prim.String (urlifyString s)), loc) | EWrite (EFfiApp ("Basis", "urlifyString", [e]), _) => EFfiApp ("Basis", "urlifyString_w", [e]) | EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "True", ...}, NONE), _)]) => EPrim (Prim.String "1") | EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "False", ...}, NONE), _)]) => EPrim (Prim.String "0") | EWrite (EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "True", ...}, NONE), _)]), loc) => EWrite (EPrim (Prim.String "1"), loc) | EWrite (EFfiApp ("Basis", "urlifyBool", [(ECon (Enum, PConFfi {con = "False", ...}, NONE), _)]), loc) => EWrite (EPrim (Prim.String "0"), loc) | EWrite (EFfiApp ("Basis", "urlifyBool", [e]), _) => EFfiApp ("Basis", "urlifyBool_w", [e]) | EWrite (ECase (discE, pes, {disc, ...}), loc) => optExp (ECase (discE, map (fn (p, e) => (p, (EWrite e, loc))) pes, {disc = disc, result = (TRecord [], loc)}), loc) | _ => e and optExp e = #1 (U.Exp.map {typ = typ, exp = exp} e) val optimize = U.File.map {typ = typ, exp = exp, decl = decl} end