adamc@567: (* Copyright (c) 2008, Adam Chlipala adamc@567: * All rights reserved. adamc@567: * adamc@567: * Redistribution and use in source and binary forms, with or without adamc@567: * modification, are permitted provided that the following conditions are met: adamc@567: * adamc@567: * - Redistributions of source code must retain the above copyright notice, adamc@567: * this list of conditions and the following disclaimer. adamc@567: * - Redistributions in binary form must reproduce the above copyright notice, adamc@567: * this list of conditions and the following disclaimer in the documentation adamc@567: * and/or other materials provided with the distribution. adamc@567: * - The names of contributors may not be used to endorse or promote products adamc@567: * derived from this software without specific prior written permission. adamc@567: * adamc@567: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" adamc@567: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE adamc@567: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE adamc@567: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE adamc@567: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR adamc@567: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF adamc@567: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS adamc@567: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN adamc@567: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) adamc@567: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE adamc@567: * POSSIBILITY OF SUCH DAMAGE. adamc@567: *) adamc@567: adamc@567: structure JsComp :> JSCOMP = struct adamc@567: adamc@567: open Mono adamc@567: adamc@567: structure EM = ErrorMsg adamc@567: structure E = MonoEnv adamc@567: structure U = MonoUtil adamc@567: adamc@589: structure IS = IntBinarySet adamc@589: structure IM = IntBinaryMap adamc@589: adamc@572: val funcs = [(("Basis", "alert"), "alert"), adamc@586: (("Basis", "htmlifyBool"), "bs"), adamc@583: (("Basis", "htmlifyFloat"), "ts"), adamc@582: (("Basis", "htmlifyInt"), "ts"), adamc@574: (("Basis", "htmlifyString"), "escape"), adamc@579: (("Basis", "new_client_source"), "sc"), adamc@579: (("Basis", "set_client_source"), "sv")] adamc@572: adamc@572: structure FM = BinaryMapFn(struct adamc@572: type ord_key = string * string adamc@572: fun compare ((m1, x1), (m2, x2)) = adamc@572: Order.join (String.compare (m1, m2), adamc@572: fn () => String.compare (x1, x2)) adamc@572: end) adamc@572: adamc@572: val funcs = foldl (fn ((k, v), m) => FM.insert (m, k, v)) FM.empty funcs adamc@572: adamc@572: fun ffi k = FM.find (funcs, k) adamc@572: adamc@567: type state = { adamc@567: decls : decl list, adamc@589: script : string list, adamc@589: included : IS.set adamc@567: } adamc@567: adamc@567: fun varDepth (e, _) = adamc@567: case e of adamc@567: EPrim _ => 0 adamc@567: | ERel _ => 0 adamc@567: | ENamed _ => 0 adamc@567: | ECon (_, _, NONE) => 0 adamc@567: | ECon (_, _, SOME e) => varDepth e adamc@567: | ENone _ => 0 adamc@567: | ESome (_, e) => varDepth e adamc@567: | EFfi _ => 0 adamc@567: | EFfiApp (_, _, es) => foldl Int.max 0 (map varDepth es) adamc@567: | EApp (e1, e2) => Int.max (varDepth e1, varDepth e2) adamc@567: | EAbs _ => 0 adamc@567: | EUnop (_, e) => varDepth e adamc@567: | EBinop (_, e1, e2) => Int.max (varDepth e1, varDepth e2) adamc@567: | ERecord xes => foldl Int.max 0 (map (fn (_, e, _) => varDepth e) xes) adamc@567: | EField (e, _) => varDepth e adamc@567: | ECase (e, pes, _) => adamc@567: foldl Int.max (varDepth e) adamc@567: (map (fn (p, e) => E.patBindsN p + varDepth e) pes) adamc@567: | EStrcat (e1, e2) => Int.max (varDepth e1, varDepth e2) adamc@567: | EError (e, _) => varDepth e adamc@567: | EWrite e => varDepth e adamc@567: | ESeq (e1, e2) => Int.max (varDepth e1, varDepth e2) adamc@567: | ELet (_, _, e1, e2) => Int.max (varDepth e1, 1 + varDepth e2) adamc@567: | EClosure _ => 0 adamc@567: | EQuery _ => 0 adamc@567: | EDml _ => 0 adamc@567: | ENextval _ => 0 adamc@567: | EUnurlify _ => 0 adamc@567: | EJavaScript _ => 0 adamc@568: | ESignalReturn e => varDepth e adamc@572: | ESignalBind (e1, e2) => Int.max (varDepth e1, varDepth e2) adamc@574: | ESignalSource e => varDepth e adamc@567: adamc@591: fun closedUpto d = adamc@591: let adamc@591: fun cu inner (e, _) = adamc@591: case e of adamc@591: EPrim _ => true adamc@591: | ERel n => n < inner orelse n - inner >= d adamc@591: | ENamed _ => true adamc@591: | ECon (_, _, NONE) => true adamc@591: | ECon (_, _, SOME e) => cu inner e adamc@591: | ENone _ => true adamc@591: | ESome (_, e) => cu inner e adamc@591: | EFfi _ => true adamc@591: | EFfiApp (_, _, es) => List.all (cu inner) es adamc@591: | EApp (e1, e2) => cu inner e1 andalso cu inner e2 adamc@591: | EAbs (_, _, _, e) => cu (inner + 1) e adamc@591: | EUnop (_, e) => cu inner e adamc@591: | EBinop (_, e1, e2) => cu inner e1 andalso cu inner e2 adamc@591: | ERecord xes => List.all (fn (_, e, _) => cu inner e) xes adamc@591: | EField (e, _) => cu inner e adamc@591: | ECase (e, pes, _) => adamc@591: cu inner e adamc@591: andalso List.all (fn (p, e) => cu (inner + E.patBindsN p) e) pes adamc@591: | EStrcat (e1, e2) => cu inner e1 andalso cu inner e2 adamc@591: | EError (e, _) => cu inner e adamc@591: | EWrite e => cu inner e adamc@591: | ESeq (e1, e2) => cu inner e1 andalso cu inner e2 adamc@591: | ELet (_, _, e1, e2) => cu inner e1 andalso cu (inner + 1) e2 adamc@591: | EClosure (_, es) => List.all (cu inner) es adamc@591: | EQuery {query, body, initial, ...} => adamc@591: cu inner query adamc@591: andalso cu (inner + 2) body adamc@591: andalso cu inner initial adamc@591: | EDml e => cu inner e adamc@591: | ENextval e => cu inner e adamc@591: | EUnurlify (e, _) => cu inner e adamc@591: | EJavaScript (_, e, _) => cu inner e adamc@591: | ESignalReturn e => cu inner e adamc@591: | ESignalBind (e1, e2) => cu inner e1 andalso cu inner e2 adamc@591: | ESignalSource e => cu inner e adamc@591: in adamc@591: cu 0 adamc@591: end adamc@591: adamc@568: fun strcat loc es = adamc@568: case es of adamc@568: [] => (EPrim (Prim.String ""), loc) adamc@568: | [x] => x adamc@568: | x :: es' => (EStrcat (x, strcat loc es'), loc) adamc@568: adamc@589: fun process file = adamc@567: let adamc@589: val nameds = foldl (fn ((DVal (_, n, t, e, _), _), nameds) => IM.insert (nameds, n, e) adamc@589: | ((DValRec vis, _), nameds) => adamc@589: foldl (fn ((_, n, _, e, _), nameds) => IM.insert (nameds, n, e)) adamc@589: nameds vis adamc@589: | (_, nameds) => nameds) adamc@589: IM.empty file adamc@567: adamc@590: fun str loc s = (EPrim (Prim.String s), loc) adamc@590: adamc@593: fun quoteExp loc (t : typ) (e, st) = adamc@590: case #1 t of adamc@593: TSource => (strcat loc [str loc "s", adamc@593: (EFfiApp ("Basis", "htmlifyInt", [e]), loc)], st) adamc@590: adamc@593: | TRecord [] => (str loc "null", st) adamc@593: | TRecord [(x, t)] => adamc@593: let adamc@593: val (e, st) = quoteExp loc t ((EField (e, x), loc), st) adamc@593: in adamc@593: (strcat loc [str loc ("{_" ^ x ^ ":"), adamc@593: e, adamc@593: str loc "}"], st) adamc@593: end adamc@593: | TRecord ((x, t) :: xts) => adamc@593: let adamc@593: val (e', st) = quoteExp loc t ((EField (e, x), loc), st) adamc@593: val (es, st) = ListUtil.foldlMap adamc@593: (fn ((x, t), st) => adamc@593: let adamc@593: val (e, st) = quoteExp loc t ((EField (e, x), loc), st) adamc@593: in adamc@593: (strcat loc [str loc (",_" ^ x ^ ":"), e], st) adamc@593: end) adamc@593: st xts adamc@593: in adamc@593: (strcat loc (str loc ("{_" ^ x ^ ":") adamc@593: :: e' adamc@593: :: es adamc@593: @ [str loc "}"]), st) adamc@593: end adamc@590: adamc@593: | TFfi ("Basis", "string") => ((EFfiApp ("Basis", "jsifyString", [e]), loc), st) adamc@593: | TFfi ("Basis", "int") => ((EFfiApp ("Basis", "htmlifyInt", [e]), loc), st) adamc@593: | TFfi ("Basis", "float") => ((EFfiApp ("Basis", "htmlifyFloat", [e]), loc), st) adamc@593: adamc@593: | TFfi ("Basis", "bool") => ((ECase (e, adamc@593: [((PCon (Enum, PConFfi {mod = "Basis", adamc@593: datatyp = "bool", adamc@593: con = "True", adamc@593: arg = NONE}, NONE), loc), adamc@593: str loc "true"), adamc@593: ((PCon (Enum, PConFfi {mod = "Basis", adamc@593: datatyp = "bool", adamc@593: con = "False", adamc@593: arg = NONE}, NONE), loc), adamc@593: str loc "false")], adamc@593: {disc = (TFfi ("Basis", "bool"), loc), adamc@593: result = (TFfi ("Basis", "string"), loc)}), loc), adamc@593: st) adamc@592: adamc@590: | _ => (EM.errorAt loc "Don't know how to embed type in JavaScript"; adamc@590: Print.prefaces "Can't embed" [("t", MonoPrint.p_typ MonoEnv.empty t)]; adamc@593: (str loc "ERROR", st)) adamc@590: adamc@589: fun jsExp mode skip outer = adamc@567: let adamc@589: val len = length outer adamc@567: adamc@589: fun jsE inner (e as (_, loc), st) = adamc@589: let adamc@590: val str = str loc adamc@567: adamc@589: fun var n = Int.toString (len + inner - n - 1) adamc@567: adamc@589: fun patCon pc = adamc@589: case pc of adamc@589: PConVar n => str (Int.toString n) adamc@589: | PConFfi {mod = "Basis", con = "True", ...} => str "true" adamc@589: | PConFfi {mod = "Basis", con = "False", ...} => str "false" adamc@589: | PConFfi {con, ...} => str ("\"_" ^ con ^ "\"") adamc@567: adamc@589: fun isNullable (t, _) = adamc@589: case t of adamc@589: TOption _ => true adamc@589: | TRecord [] => true adamc@589: | _ => false adamc@568: adamc@591: fun unsupported s = adamc@591: (EM.errorAt loc (s ^ " in code to be compiled to JavaScript[2]"); adamc@591: (str "ERROR", st)) adamc@577: adamc@589: val strcat = strcat loc adamc@584: adamc@589: fun jsPrim p = adamc@589: case p of adamc@589: Prim.String s => adamc@589: str ("\"" adamc@589: ^ String.translate (fn #"'" => adamc@589: if mode = Attribute then adamc@589: "\\047" adamc@589: else adamc@589: "'" adamc@589: | #"\"" => "\\\"" adamc@589: | #"<" => adamc@589: if mode = Script then adamc@589: "<" adamc@589: else adamc@589: "\\074" adamc@589: | #"\\" => "\\\\" adamc@589: | ch => String.str ch) s adamc@589: ^ "\"") adamc@589: | _ => str (Prim.toString p) adamc@589: adamc@589: fun jsPat depth inner (p, _) succ fail = adamc@589: case p of adamc@589: PWild => succ adamc@589: | PVar _ => strcat [str ("(_" ^ Int.toString (len + inner) ^ "=d" adamc@589: ^ Int.toString depth ^ ","), adamc@589: succ, adamc@589: str ")"] adamc@589: | PPrim p => strcat [str ("(d" ^ Int.toString depth ^ "=="), adamc@589: jsPrim p, adamc@589: str "?", adamc@589: succ, adamc@589: str ":", adamc@589: fail, adamc@589: str ")"] adamc@589: | PCon (_, PConFfi {mod = "Basis", con = "True", ...}, NONE) => adamc@589: strcat [str ("(d" ^ Int.toString depth ^ "?"), adamc@589: succ, adamc@589: str ":", adamc@589: fail, adamc@589: str ")"] adamc@589: | PCon (_, PConFfi {mod = "Basis", con = "False", ...}, NONE) => adamc@589: strcat [str ("(d" ^ Int.toString depth ^ "?"), adamc@589: fail, adamc@589: str ":", adamc@589: succ, adamc@589: str ")"] adamc@589: | PCon (_, pc, NONE) => adamc@589: strcat [str ("(d" ^ Int.toString depth ^ "=="), adamc@589: patCon pc, adamc@589: str "?", adamc@589: succ, adamc@589: str ":", adamc@589: fail, adamc@589: str ")"] adamc@589: | PCon (_, pc, SOME p) => adamc@589: strcat [str ("(d" ^ Int.toString depth ^ ".n=="), adamc@589: patCon pc, adamc@589: str ("?(d" ^ Int.toString depth ^ "=d" ^ Int.toString depth ^ ".v,"), adamc@589: jsPat depth inner p succ fail, adamc@589: str "):", adamc@589: fail, adamc@589: str ")"] adamc@589: | PRecord xps => adamc@589: let adamc@589: val (_, succ) = foldl adamc@589: (fn ((x, p, _), (inner, succ)) => adamc@589: (inner + E.patBindsN p, adamc@589: strcat [str ("(d" ^ Int.toString (depth+1) ^ "=d" adamc@589: ^ Int.toString depth ^ "._" ^ x ^ ","), adamc@589: jsPat (depth+1) inner p succ fail, adamc@589: str ")"])) adamc@589: (inner, succ) xps adamc@589: in adamc@589: succ adamc@589: end adamc@589: | PNone _ => strcat [str ("(d" ^ Int.toString depth ^ "?"), adamc@589: fail, adamc@589: str ":", adamc@589: succ, adamc@589: str ")"] adamc@589: | PSome (_, p) => strcat [str ("(d" ^ Int.toString depth ^ "?"), adamc@589: jsPat depth inner p succ fail, adamc@589: str ":", adamc@589: fail, adamc@589: str ")"] adamc@589: adamc@589: fun deStrcat (e, _) = adamc@589: case e of adamc@589: EPrim (Prim.String s) => s adamc@589: | EStrcat (e1, e2) => deStrcat e1 ^ deStrcat e2 adamc@589: | _ => raise Fail "Jscomp: deStrcat" adamc@590: adamc@590: val quoteExp = quoteExp loc adamc@567: in adamc@590: (*Print.prefaces "jsE" [("e", MonoPrint.p_exp MonoEnv.empty e)];*) adamc@590: adamc@589: case #1 e of adamc@589: EPrim p => (jsPrim p, st) adamc@589: | ERel n => adamc@589: if n < inner then adamc@589: (str ("_" ^ var n), st) adamc@589: else adamc@589: let adamc@589: val n = n - inner adamc@589: in adamc@593: quoteExp (List.nth (outer, n)) ((ERel (n - skip), loc), st) adamc@589: end adamc@567: adamc@589: | ENamed n => adamc@589: let adamc@589: val st = adamc@589: if IS.member (#included st, n) then adamc@589: st adamc@589: else adamc@589: case IM.find (nameds, n) of adamc@589: NONE => raise Fail "Jscomp: Unbound ENamed" adamc@589: | SOME e => adamc@589: let adamc@589: val st = {decls = #decls st, adamc@589: script = #script st, adamc@589: included = IS.add (#included st, n)} adamc@578: adamc@589: val (e, st) = jsExp mode skip [] 0 (e, st) adamc@589: val e = deStrcat e adamc@589: adamc@589: val sc = "_n" ^ Int.toString n ^ "=" ^ e ^ ";\n" adamc@589: in adamc@589: {decls = #decls st, adamc@589: script = sc :: #script st, adamc@589: included = #included st} adamc@589: end adamc@589: in adamc@589: (str ("_n" ^ Int.toString n), st) adamc@589: end adamc@589: adamc@589: | ECon (_, pc, NONE) => (patCon pc, st) adamc@589: | ECon (_, pc, SOME e) => adamc@589: let adamc@589: val (s, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [str "{n:", adamc@589: patCon pc, adamc@589: str ",v:", adamc@589: s, adamc@589: str "}"], st) adamc@589: end adamc@589: | ENone _ => (str "null", st) adamc@589: | ESome (t, e) => adamc@572: let adamc@572: val (e, st) = jsE inner (e, st) adamc@572: in adamc@589: (if isNullable t then adamc@589: strcat [str "{v:", e, str "}"] adamc@589: else adamc@589: e, st) adamc@589: end adamc@589: adamc@589: | EFfi k => adamc@589: let adamc@589: val name = case ffi k of adamc@589: NONE => (EM.errorAt loc ("Unsupported FFI identifier " ^ #2 k adamc@589: ^ " in JavaScript"); adamc@589: "ERROR") adamc@589: | SOME s => s adamc@589: in adamc@589: (str name, st) adamc@589: end adamc@589: | EFfiApp (m, x, args) => adamc@589: let adamc@589: val args = adamc@589: case (m, x, args) of adamc@589: ("Basis", "new_client_source", [(EJavaScript (_, e, _), _)]) => [e] adamc@589: | ("Basis", "set_client_source", [e1, (EJavaScript (_, e2, _), _)]) => [e1, e2] adamc@589: | _ => args adamc@589: adamc@589: val name = case ffi (m, x) of adamc@589: NONE => (EM.errorAt loc ("Unsupported FFI function " adamc@589: ^ x ^ " in JavaScript"); adamc@589: "ERROR") adamc@589: | SOME s => s adamc@589: in adamc@589: case args of adamc@589: [] => (str (name ^ "()"), st) adamc@589: | [e] => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [str (name ^ "("), adamc@589: e, adamc@589: str ")"], st) adamc@589: end adamc@589: | e :: es => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: val (es, st) = ListUtil.foldlMapConcat adamc@589: (fn (e, st) => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: ([str ",", e], st) adamc@589: end) adamc@589: st es adamc@589: in adamc@589: (strcat (str (name ^ "(") adamc@589: :: e adamc@589: :: es adamc@589: @ [str ")"]), st) adamc@589: end adamc@589: end adamc@589: adamc@589: | EApp (e1, e2) => adamc@589: let adamc@589: val (e1, st) = jsE inner (e1, st) adamc@589: val (e2, st) = jsE inner (e2, st) adamc@589: in adamc@589: (strcat [e1, str "(", e2, str ")"], st) adamc@589: end adamc@589: | EAbs (_, _, _, e) => adamc@589: let adamc@589: val locals = List.tabulate adamc@589: (varDepth e, adamc@589: fn i => str ("var _" ^ Int.toString (len + inner + i + 1) ^ ";")) adamc@589: val (e, st) = jsE (inner + 1) (e, st) adamc@589: in adamc@589: (strcat (str ("function(_" adamc@589: ^ Int.toString (len + inner) adamc@589: ^ "){") adamc@589: :: locals adamc@589: @ [str "return ", adamc@589: e, adamc@589: str "}"]), adamc@589: st) adamc@589: end adamc@589: adamc@589: | EUnop (s, e) => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [str ("(" ^ s), adamc@572: e, adamc@589: str ")"], adamc@589: st) adamc@589: end adamc@589: | EBinop (s, e1, e2) => adamc@589: let adamc@589: val (e1, st) = jsE inner (e1, st) adamc@589: val (e2, st) = jsE inner (e2, st) adamc@589: in adamc@589: (strcat [str "(", adamc@589: e1, adamc@589: str s, adamc@589: e2, adamc@589: str ")"], adamc@589: st) adamc@589: end adamc@589: adamc@589: | ERecord [] => (str "null", st) adamc@589: | ERecord [(x, e, _)] => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [str "{_x:", e, str "}"], st) adamc@589: end adamc@589: | ERecord ((x, e, _) :: xes) => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: adamc@589: val (es, st) = adamc@589: foldr (fn ((x, e, _), (es, st)) => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (str (",_" ^ x ^ ":") adamc@589: :: e adamc@589: :: es, adamc@589: st) adamc@589: end) adamc@589: ([str "}"], st) xes adamc@589: in adamc@589: (strcat (str ("{_" ^ x ^ ":") adamc@589: :: e adamc@589: :: es), adamc@589: st) adamc@589: end adamc@589: | EField (e, x) => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [e, adamc@589: str ("._" ^ x)], st) adamc@589: end adamc@589: adamc@591: | ECase (e', pes, {result, ...}) => adamc@591: if closedUpto inner e andalso List.all (fn (_, e) => closedUpto inner e) pes then adamc@593: let adamc@593: val (e', st) = quoteExp result ((ERel 0, loc), st) adamc@593: in adamc@593: ((ELet ("js", result, e, e'), loc), adamc@593: st) adamc@593: end adamc@591: else adamc@591: let adamc@591: val plen = length pes adamc@589: adamc@591: val (cases, st) = ListUtil.foldliMap adamc@591: (fn (i, (p, e), st) => adamc@591: let adamc@591: val (e, st) = jsE (inner + E.patBindsN p) (e, st) adamc@591: val fail = adamc@591: if i = plen - 1 then adamc@591: str "pf()" adamc@591: else adamc@591: str ("c" ^ Int.toString (i+1) ^ "()") adamc@591: val c = jsPat 0 inner p e fail adamc@591: in adamc@591: (strcat [str ("c" ^ Int.toString i ^ "=function(){return "), adamc@591: c, adamc@591: str "},"], adamc@591: st) adamc@591: end) adamc@591: st pes adamc@589: adamc@591: val (e, st) = jsE inner (e', st) adamc@591: in adamc@591: (strcat (str "(" adamc@591: :: List.revAppend (cases, adamc@591: [str "d0=", adamc@591: e, adamc@591: str ",c0())"])), st) adamc@591: end adamc@589: adamc@589: | EStrcat (e1, e2) => adamc@589: let adamc@589: val (e1, st) = jsE inner (e1, st) adamc@589: val (e2, st) = jsE inner (e2, st) adamc@589: in adamc@589: (strcat [str "(", e1, str "+", e2, str ")"], st) adamc@589: end adamc@589: adamc@589: | EError (e, _) => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [str "alert(\"ERROR: \"+", e, str ")"], adamc@589: st) adamc@589: end adamc@589: adamc@589: | EWrite e => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [str "document.write(", adamc@589: e, adamc@589: str ".v)"], st) adamc@589: end adamc@589: adamc@589: | ESeq (e1, e2) => adamc@589: let adamc@589: val (e1, st) = jsE inner (e1, st) adamc@589: val (e2, st) = jsE inner (e2, st) adamc@589: in adamc@589: (strcat [str "(", e1, str ",", e2, str ")"], st) adamc@589: end adamc@589: | ELet (_, _, e1, e2) => adamc@589: let adamc@589: val (e1, st) = jsE inner (e1, st) adamc@589: val (e2, st) = jsE (inner + 1) (e2, st) adamc@589: in adamc@589: (strcat [str ("(_" ^ Int.toString (len + inner) ^ "="), adamc@589: e1, adamc@589: str ",", adamc@589: e2, adamc@572: str ")"], st) adamc@572: end adamc@589: adamc@591: | EJavaScript (_, _, SOME _) => (e, st) adamc@590: adamc@589: | EClosure _ => unsupported "EClosure" adamc@589: | EQuery _ => unsupported "Query" adamc@589: | EDml _ => unsupported "DML" adamc@589: | ENextval _ => unsupported "Nextval" adamc@589: | EUnurlify _ => unsupported "EUnurlify" adamc@590: | EJavaScript (_, e, _) => unsupported "Nested JavaScript" adamc@590: adamc@589: | ESignalReturn e => adamc@572: let adamc@572: val (e, st) = jsE inner (e, st) adamc@572: in adamc@589: (strcat [str "sr(", adamc@589: e, adamc@589: str ")"], adamc@589: st) adamc@589: end adamc@589: | ESignalBind (e1, e2) => adamc@589: let adamc@589: val (e1, st) = jsE inner (e1, st) adamc@589: val (e2, st) = jsE inner (e2, st) adamc@589: in adamc@589: (strcat [str "sb(", adamc@589: e1, adamc@589: str ",", adamc@589: e2, adamc@589: str ")"], adamc@589: st) adamc@589: end adamc@589: | ESignalSource e => adamc@589: let adamc@589: val (e, st) = jsE inner (e, st) adamc@589: in adamc@589: (strcat [str "ss(", adamc@589: e, adamc@589: str ")"], adamc@589: st) adamc@572: end adamc@567: end adamc@589: in adamc@589: jsE adamc@589: end adamc@567: adamc@589: val decl : state -> decl -> decl * state = adamc@589: U.Decl.foldMapB {typ = fn x => x, adamc@589: exp = fn (env, e, st) => adamc@589: let adamc@589: fun doCode m skip env orig e = adamc@589: let adamc@589: val len = length env adamc@589: fun str s = (EPrim (Prim.String s), #2 e) adamc@567: adamc@589: val locals = List.tabulate adamc@589: (varDepth e, adamc@589: fn i => str ("var _" ^ Int.toString (len + i) ^ ";")) adamc@589: val (e, st) = jsExp m skip env 0 (e, st) adamc@589: in adamc@589: (EJavaScript (m, orig, SOME (strcat (#2 e) (locals @ [e]))), st) adamc@589: end adamc@589: in adamc@589: case e of adamc@591: EJavaScript (m, orig as (EAbs (_, t, _, e), _), NONE) => adamc@591: doCode m 1 (t :: env) orig e adamc@591: | EJavaScript (m, orig, NONE) => adamc@591: doCode m 0 env orig orig adamc@589: | _ => (e, st) adamc@589: end, adamc@589: decl = fn (_, e, st) => (e, st), adamc@589: bind = fn (env, U.Decl.RelE (_, t)) => t :: env adamc@589: | (env, _) => env} adamc@589: [] adamc@567: adamc@567: fun doDecl (d, st) = adamc@567: let adamc@567: val (d, st) = decl st d adamc@567: in adamc@567: (List.revAppend (#decls st, [d]), adamc@567: {decls = [], adamc@589: script = #script st, adamc@589: included = #included st}) adamc@567: end adamc@567: adamc@567: val (ds, st) = ListUtil.foldlMapConcat doDecl adamc@567: {decls = [], adamc@589: script = [], adamc@589: included = IS.empty} adamc@567: file adamc@569: adamc@569: val inf = TextIO.openIn (OS.Path.joinDirFile {dir = Config.libJs, file = "urweb.js"}) adamc@569: fun lines acc = adamc@569: case TextIO.inputLine inf of adamc@569: NONE => String.concat (rev acc) adamc@569: | SOME line => lines (line :: acc) adamc@569: val lines = lines [] adamc@567: in adamc@569: TextIO.closeIn inf; adamc@589: (DJavaScript (lines ^ String.concat (rev (#script st))), ErrorMsg.dummySpan) :: ds adamc@567: end adamc@567: adamc@567: end