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Monoizing joins and tags
author Adam Chlipala <adamc@hcoop.net>
date Thu, 03 Jul 2008 17:53:28 -0400
parents 40d146f467c5
children f0f59e918cac
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@25 82 fun monoExp env (all as (e, loc)) =
adamc@25 83 let
adamc@25 84 fun poly () =
adamc@25 85 (E.errorAt loc "Unsupported expression";
adamc@25 86 Print.eprefaces' [("Expression", CorePrint.p_exp env all)];
adamc@25 87 dummyExp)
adamc@25 88 in
adamc@25 89 case e of
adamc@25 90 L.EPrim p => (L'.EPrim p, loc)
adamc@25 91 | L.ERel n => (L'.ERel n, loc)
adamc@25 92 | L.ENamed n => (L'.ENamed n, loc)
adamc@51 93 | L.EFfi mx => (L'.EFfi mx, loc)
adamc@51 94 | L.EFfiApp (m, x, es) => (L'.EFfiApp (m, x, map (monoExp env) es), loc)
adamc@94 95
adamc@94 96 | L.EApp ((L.ECApp ((L.EFfi ("Basis", "cdata"), _),
adamc@94 97 _), _), se) => monoExp env se
adamc@95 98 | L.EApp (
adamc@95 99 (L.EApp (
adamc@95 100 (L.ECApp (
adamc@95 101 (L.ECApp (
adamc@95 102 (L.ECApp (
adamc@95 103 (L.EFfi ("Basis", "join"),
adamc@95 104 _), _), _),
adamc@95 105 _), _),
adamc@95 106 _), _),
adamc@95 107 xml1), _),
adamc@95 108 xml2) => (L'.EStrcat (monoExp env xml1, monoExp env xml2), loc)
adamc@95 109
adamc@95 110 | L.EApp (
adamc@95 111 (L.EApp (
adamc@95 112 (L.ECApp (
adamc@95 113 (L.ECApp (
adamc@95 114 (L.EFfi ("Basis", "tag"),
adamc@95 115 _), _), _),
adamc@95 116 _), _),
adamc@95 117 tag), _),
adamc@95 118 xml) =>
adamc@95 119 let
adamc@95 120 fun getTag (e, _) =
adamc@95 121 case e of
adamc@95 122 L.EFfi ("Basis", tag) => tag
adamc@95 123 | _ => (E.errorAt loc "Non-constant XML tag";
adamc@95 124 Print.eprefaces' [("Expression", CorePrint.p_exp env tag)];
adamc@95 125 "")
adamc@95 126
adamc@95 127 val tag = getTag tag
adamc@95 128
adamc@95 129 fun normal () =
adamc@95 130 (L'.EStrcat ((L'.EPrim (Prim.String (String.concat ["<", tag, ">"])), loc),
adamc@95 131 (L'.EStrcat (monoExp env xml,
adamc@95 132 (L'.EPrim (Prim.String (String.concat ["</", tag, ">"])), loc)), loc)),
adamc@95 133 loc)
adamc@95 134 in
adamc@95 135 case xml of
adamc@95 136 (L.EApp ((L.ECApp ((L.EFfi ("Basis", "cdata"), _),
adamc@95 137 _), _), (L.EPrim (Prim.String s), _)), _) =>
adamc@95 138 if CharVector.all Char.isSpace s then
adamc@95 139 (L'.EPrim (Prim.String (String.concat ["<", tag, "/>"])), loc)
adamc@95 140 else
adamc@95 141 normal ()
adamc@95 142 | _ => normal ()
adamc@95 143 end
adamc@94 144
adamc@25 145 | L.EApp (e1, e2) => (L'.EApp (monoExp env e1, monoExp env e2), loc)
adamc@26 146 | L.EAbs (x, dom, ran, e) =>
adamc@26 147 (L'.EAbs (x, monoType env dom, monoType env ran, monoExp (Env.pushERel env x dom) e), loc)
adamc@25 148 | L.ECApp _ => poly ()
adamc@25 149 | L.ECAbs _ => poly ()
adamc@25 150
adamc@29 151 | L.ERecord xes => (L'.ERecord (map (fn (x, e, t) => (monoName env x, monoExp env e, monoType env t)) xes), loc)
adamc@25 152 | L.EField (e, x, _) => (L'.EField (monoExp env e, monoName env x), loc)
adamc@73 153 | L.EFold _ => poly ()
adamc@25 154 end
adamc@25 155
adamc@25 156 fun monoDecl env (all as (d, loc)) =
adamc@25 157 let
adamc@25 158 fun poly () =
adamc@25 159 (E.errorAt loc "Unsupported declaration";
adamc@25 160 Print.eprefaces' [("Declaration", CorePrint.p_decl env all)];
adamc@25 161 NONE)
adamc@25 162 in
adamc@25 163 case d of
adamc@25 164 L.DCon _ => NONE
adamc@25 165 | L.DVal (x, n, t, e) => SOME (Env.pushENamed env x n t (SOME e),
adamc@25 166 (L'.DVal (x, n, monoType env t, monoExp env e), loc))
adamc@25 167 end
adamc@25 168
adamc@25 169 fun monoize env ds =
adamc@25 170 let
adamc@25 171 val (_, ds) = List.foldl (fn (d, (env, ds)) =>
adamc@25 172 case monoDecl env d of
adamc@25 173 NONE => (env, ds)
adamc@25 174 | SOME (env, d) => (env, d :: ds)) (env, []) ds
adamc@25 175 in
adamc@25 176 rev ds
adamc@25 177 end
adamc@25 178
adamc@25 179 end