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annotate src/monoize.sml @ 105:da760c34f5ed

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Stringifying attributes
author Adam Chlipala <adamc@hcoop.net>
date Thu, 10 Jul 2008 15:19:06 -0400
parents b1e5398a7f30
children d101cb1efe55
rev   line source
adamc@25 1 (* Copyright (c) 2008, Adam Chlipala
adamc@25 2 * All rights reserved.
adamc@25 3 *
adamc@25 4 * Redistribution and use in source and binary forms, with or without
adamc@25 5 * modification, are permitted provided that the following conditions are met:
adamc@25 6 *
adamc@25 7 * - Redistributions of source code must retain the above copyright notice,
adamc@25 8 * this list of conditions and the following disclaimer.
adamc@25 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@25 10 * this list of conditions and the following disclaimer in the documentation
adamc@25 11 * and/or other materials provided with the distribution.
adamc@25 12 * - The names of contributors may not be used to endorse or promote products
adamc@25 13 * derived from this software without specific prior written permission.
adamc@25 14 *
adamc@25 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@25 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@25 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@25 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@25 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@25 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@25 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@25 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@25 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@25 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@25 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@25 26 *)
adamc@25 27
adamc@25 28 structure Monoize :> MONOIZE = struct
adamc@25 29
adamc@25 30 structure E = ErrorMsg
adamc@25 31 structure Env = CoreEnv
adamc@25 32
adamc@25 33 structure L = Core
adamc@25 34 structure L' = Mono
adamc@25 35
adamc@25 36 val dummyTyp = (L'.TNamed 0, E.dummySpan)
adamc@25 37
adamc@25 38 fun monoName env (all as (c, loc)) =
adamc@25 39 let
adamc@25 40 fun poly () =
adamc@25 41 (E.errorAt loc "Unsupported name constructor";
adamc@25 42 Print.eprefaces' [("Constructor", CorePrint.p_con env all)];
adamc@25 43 "")
adamc@25 44 in
adamc@25 45 case c of
adamc@25 46 L.CName s => s
adamc@25 47 | _ => poly ()
adamc@25 48 end
adamc@25 49
adamc@25 50 fun monoType env (all as (c, loc)) =
adamc@25 51 let
adamc@25 52 fun poly () =
adamc@25 53 (E.errorAt loc "Unsupported type constructor";
adamc@25 54 Print.eprefaces' [("Constructor", CorePrint.p_con env all)];
adamc@25 55 dummyTyp)
adamc@25 56 in
adamc@25 57 case c of
adamc@25 58 L.TFun (c1, c2) => (L'.TFun (monoType env c1, monoType env c2), loc)
adamc@25 59 | L.TCFun _ => poly ()
adamc@25 60 | L.TRecord (L.CRecord ((L.KType, _), xcs), _) =>
adamc@25 61 (L'.TRecord (map (fn (x, t) => (monoName env x, monoType env t)) xcs), loc)
adamc@25 62 | L.TRecord _ => poly ()
adamc@25 63
adamc@94 64 | L.CApp ((L.CFfi ("Basis", "xml"), _), _) => (L'.TFfi ("Basis", "string"), loc)
adamc@94 65
adamc@25 66 | L.CRel _ => poly ()
adamc@25 67 | L.CNamed n => (L'.TNamed n, loc)
adamc@51 68 | L.CFfi mx => (L'.TFfi mx, loc)
adamc@25 69 | L.CApp _ => poly ()
adamc@25 70 | L.CAbs _ => poly ()
adamc@25 71
adamc@25 72 | L.CName _ => poly ()
adamc@25 73
adamc@25 74 | L.CRecord _ => poly ()
adamc@25 75 | L.CConcat _ => poly ()
adamc@69 76 | L.CFold _ => poly ()
adamc@87 77 | L.CUnit => poly ()
adamc@25 78 end
adamc@25 79
adamc@25 80 val dummyExp = (L'.EPrim (Prim.Int 0), E.dummySpan)
adamc@25 81
adamc@105 82 fun attrifyExp (e, tAll as (t, loc)) =
adamc@105 83 case t of
adamc@105 84 L'.TFfi ("Basis", "string") => e
adamc@105 85 | L'.TFfi ("Basis", "int") => (L'.EFfiApp ("Basis", "attrifyInt", [e]), loc)
adamc@105 86 | L'.TFfi ("Basis", "float") => (L'.EFfiApp ("Basis", "attrifyFloat", [e]), loc)
adamc@105 87 | _ => (E.errorAt loc "Don't know how to encode attribute type";
adamc@105 88 Print.eprefaces' [("Type", MonoPrint.p_typ MonoEnv.empty tAll)];
adamc@105 89 dummyExp)
adamc@105 90
adamc@25 91 fun monoExp env (all as (e, loc)) =
adamc@25 92 let
adamc@25 93 fun poly () =
adamc@25 94 (E.errorAt loc "Unsupported expression";
adamc@25 95 Print.eprefaces' [("Expression", CorePrint.p_exp env all)];
adamc@25 96 dummyExp)
adamc@25 97 in
adamc@25 98 case e of
adamc@25 99 L.EPrim p => (L'.EPrim p, loc)
adamc@25 100 | L.ERel n => (L'.ERel n, loc)
adamc@25 101 | L.ENamed n => (L'.ENamed n, loc)
adamc@51 102 | L.EFfi mx => (L'.EFfi mx, loc)
adamc@51 103 | L.EFfiApp (m, x, es) => (L'.EFfiApp (m, x, map (monoExp env) es), loc)
adamc@94 104
adamc@94 105 | L.EApp ((L.ECApp ((L.EFfi ("Basis", "cdata"), _),
adamc@94 106 _), _), se) => monoExp env se
adamc@95 107 | L.EApp (
adamc@95 108 (L.EApp (
adamc@95 109 (L.ECApp (
adamc@95 110 (L.ECApp (
adamc@95 111 (L.ECApp (
adamc@95 112 (L.EFfi ("Basis", "join"),
adamc@95 113 _), _), _),
adamc@95 114 _), _),
adamc@95 115 _), _),
adamc@95 116 xml1), _),
adamc@95 117 xml2) => (L'.EStrcat (monoExp env xml1, monoExp env xml2), loc)
adamc@95 118
adamc@95 119 | L.EApp (
adamc@95 120 (L.EApp (
adamc@104 121 (L.EApp (
adamc@95 122 (L.ECApp (
adamc@104 123 (L.ECApp (
adamc@104 124 (L.ECApp (
adamc@104 125 (L.ECApp (
adamc@104 126 (L.EFfi ("Basis", "tag"),
adamc@104 127 _), _), _), _), _), _), _), _), _),
adamc@104 128 attrs), _),
adamc@95 129 tag), _),
adamc@95 130 xml) =>
adamc@95 131 let
adamc@95 132 fun getTag (e, _) =
adamc@95 133 case e of
adamc@95 134 L.EFfi ("Basis", tag) => tag
adamc@95 135 | _ => (E.errorAt loc "Non-constant XML tag";
adamc@95 136 Print.eprefaces' [("Expression", CorePrint.p_exp env tag)];
adamc@95 137 "")
adamc@95 138
adamc@95 139 val tag = getTag tag
adamc@95 140
adamc@104 141 val attrs = monoExp env attrs
adamc@104 142
adamc@104 143 val tagStart =
adamc@104 144 case #1 attrs of
adamc@104 145 L'.ERecord xes =>
adamc@104 146 let
adamc@104 147 fun lowercaseFirst "" = ""
adamc@104 148 | lowercaseFirst s = str (Char.toLower (String.sub (s, 0))) ^ String.extract (s, 1, NONE)
adamc@104 149
adamc@104 150 val s = (L'.EPrim (Prim.String (String.concat ["<", tag])), loc)
adamc@104 151 in
adamc@105 152 foldl (fn ((x, e, t), s) =>
adamc@104 153 let
adamc@104 154 val xp = " " ^ lowercaseFirst x ^ "=\""
adamc@104 155 in
adamc@104 156 (L'.EStrcat (s,
adamc@104 157 (L'.EStrcat ((L'.EPrim (Prim.String xp), loc),
adamc@105 158 (L'.EStrcat (attrifyExp (e, t),
adamc@104 159 (L'.EPrim (Prim.String "\""), loc)),
adamc@104 160 loc)),
adamc@104 161 loc)), loc)
adamc@104 162 end)
adamc@104 163 s xes
adamc@104 164 end
adamc@104 165 | _ => raise Fail "Attributes!"
adamc@104 166
adamc@95 167 fun normal () =
adamc@104 168 (L'.EStrcat ((L'.EStrcat (tagStart, (L'.EPrim (Prim.String ">"), loc)), loc),
adamc@95 169 (L'.EStrcat (monoExp env xml,
adamc@95 170 (L'.EPrim (Prim.String (String.concat ["</", tag, ">"])), loc)), loc)),
adamc@95 171 loc)
adamc@104 172
adamc@104 173
adamc@95 174 in
adamc@95 175 case xml of
adamc@95 176 (L.EApp ((L.ECApp ((L.EFfi ("Basis", "cdata"), _),
adamc@95 177 _), _), (L.EPrim (Prim.String s), _)), _) =>
adamc@95 178 if CharVector.all Char.isSpace s then
adamc@104 179 (L'.EStrcat (tagStart, (L'.EPrim (Prim.String "/>"), loc)), loc)
adamc@95 180 else
adamc@95 181 normal ()
adamc@95 182 | _ => normal ()
adamc@95 183 end
adamc@94 184
adamc@25 185 | L.EApp (e1, e2) => (L'.EApp (monoExp env e1, monoExp env e2), loc)
adamc@26 186 | L.EAbs (x, dom, ran, e) =>
adamc@26 187 (L'.EAbs (x, monoType env dom, monoType env ran, monoExp (Env.pushERel env x dom) e), loc)
adamc@25 188 | L.ECApp _ => poly ()
adamc@25 189 | L.ECAbs _ => poly ()
adamc@25 190
adamc@29 191 | L.ERecord xes => (L'.ERecord (map (fn (x, e, t) => (monoName env x, monoExp env e, monoType env t)) xes), loc)
adamc@25 192 | L.EField (e, x, _) => (L'.EField (monoExp env e, monoName env x), loc)
adamc@73 193 | L.EFold _ => poly ()
adamc@102 194 | L.EWrite e => (L'.EWrite (monoExp env e), loc)
adamc@25 195 end
adamc@25 196
adamc@25 197 fun monoDecl env (all as (d, loc)) =
adamc@25 198 let
adamc@25 199 fun poly () =
adamc@25 200 (E.errorAt loc "Unsupported declaration";
adamc@25 201 Print.eprefaces' [("Declaration", CorePrint.p_decl env all)];
adamc@25 202 NONE)
adamc@25 203 in
adamc@25 204 case d of
adamc@25 205 L.DCon _ => NONE
adamc@25 206 | L.DVal (x, n, t, e) => SOME (Env.pushENamed env x n t (SOME e),
adamc@25 207 (L'.DVal (x, n, monoType env t, monoExp env e), loc))
adamc@100 208 | L.DPage ((c, _), e) =>
adamc@100 209 (case c of
adamc@100 210 L.CRecord (_, vs) => SOME (env,
adamc@100 211 (L'.DPage (map (fn (nm, t) => (monoName env nm,
adamc@100 212 monoType env t)) vs,
adamc@100 213 monoExp env e), loc))
adamc@100 214 | _ => poly ())
adamc@25 215 end
adamc@25 216
adamc@25 217 fun monoize env ds =
adamc@25 218 let
adamc@25 219 val (_, ds) = List.foldl (fn (d, (env, ds)) =>
adamc@25 220 case monoDecl env d of
adamc@25 221 NONE => (env, ds)
adamc@25 222 | SOME (env, d) => (env, d :: ds)) (env, []) ds
adamc@25 223 in
adamc@25 224 rev ds
adamc@25 225 end
adamc@25 226
adamc@25 227 end