Mercurial > urweb
view src/jscomp.sml @ 1644:75cf4a68f6c9
More about the JavaScript FFI in the manual
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Wed, 28 Dec 2011 10:30:37 -0500 |
| parents | 438561303d02 |
| children | 3e7c7e200713 |
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(* Copyright (c) 2008-2011, 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 JsComp :> JSCOMP = struct open Mono structure EM = ErrorMsg structure E = MonoEnv structure U = MonoUtil structure IS = IntBinarySet structure IM = IntBinaryMap structure TM = BinaryMapFn(struct type ord_key = typ val compare = U.Typ.compare end) type state = { decls : (string * int * (string * int * typ option) list) list, script : string list, included : IS.set, injectors : int IM.map, listInjectors : int TM.map, decoders : int IM.map, maxName : int } fun strcat loc es = case es of [] => (EPrim (Prim.String ""), loc) | [x] => x | x :: es' => (EStrcat (x, strcat loc es'), loc) exception CantEmbed of typ fun inString {needle, haystack} = String.isSubstring needle haystack fun process file = let val (someTs, nameds) = foldl (fn ((DVal (_, n, t, e, _), _), (someTs, nameds)) => (someTs, IM.insert (nameds, n, e)) | ((DValRec vis, _), (someTs, nameds)) => (someTs, foldl (fn ((_, n, _, e, _), nameds) => IM.insert (nameds, n, e)) nameds vis) | ((DDatatype dts, _), state as (someTs, nameds)) => (foldl (fn ((_, _, cs), someTs) => if ElabUtil.classifyDatatype cs = Option then foldl (fn ((_, n, SOME t), someTs) => IM.insert (someTs, n, t) | (_, someTs) => someTs) someTs cs else someTs) someTs dts, nameds) | (_, state) => state) (IM.empty, IM.empty) file fun str loc s = (EPrim (Prim.String s), loc) fun isNullable (t, _) = case t of TOption _ => true | TList _ => true | TDatatype (_, ref (Option, _)) => true | TRecord [] => true | _ => false fun quoteExp loc (t : typ) (e, st) = case #1 t of TSource => ((EFfiApp ("Basis", "htmlifySource", [e]), loc), st) | TRecord [] => (str loc "null", st) | TRecord [(x, t)] => let val (e, st) = quoteExp loc t ((EField (e, x), loc), st) in (strcat loc [str loc ("{_" ^ x ^ ":"), e, str loc "}"], st) end | TRecord ((x, t) :: xts) => let val (e', st) = quoteExp loc t ((EField (e, x), loc), st) val (es, st) = ListUtil.foldlMap (fn ((x, t), st) => let val (e, st) = quoteExp loc t ((EField (e, x), loc), st) in (strcat loc [str loc (",_" ^ x ^ ":"), e], st) end) st xts in (strcat loc (str loc ("{_" ^ x ^ ":") :: e' :: es @ [str loc "}"]), st) end | TFfi ("Basis", "string") => ((EFfiApp ("Basis", "jsifyString", [e]), loc), st) | TFfi ("Basis", "char") => ((EFfiApp ("Basis", "jsifyChar", [e]), loc), st) | TFfi ("Basis", "int") => ((EFfiApp ("Basis", "htmlifyInt", [e]), loc), st) | TFfi ("Basis", "float") => ((EFfiApp ("Basis", "htmlifyFloat", [e]), loc), st) | TFfi ("Basis", "channel") => ((EFfiApp ("Basis", "jsifyChannel", [e]), loc), st) | TFfi ("Basis", "time") => ((EFfiApp ("Basis", "jsifyTime", [e]), loc), st) | TFfi ("Basis", "bool") => ((ECase (e, [((PCon (Enum, PConFfi {mod = "Basis", datatyp = "bool", con = "True", arg = NONE}, NONE), loc), str loc "true"), ((PCon (Enum, PConFfi {mod = "Basis", datatyp = "bool", con = "False", arg = NONE}, NONE), loc), str loc "false")], {disc = (TFfi ("Basis", "bool"), loc), result = (TFfi ("Basis", "string"), loc)}), loc), st) | TOption t => let val (e', st) = quoteExp loc t ((ERel 0, loc), st) in (case #1 e' of EPrim (Prim.String "ERROR") => raise Fail "UHOH" | _ => (ECase (e, [((PNone t, loc), str loc "null"), ((PSome (t, (PVar ("x", t), loc)), loc), if isNullable t then strcat loc [str loc "{v:", e', str loc "}"] else e')], {disc = (TOption t, loc), result = (TFfi ("Basis", "string"), loc)}), loc), st) end | TList t' => (case TM.find (#listInjectors st, t') of SOME n' => ((EApp ((ENamed n', loc), e), loc), st) | NONE => let val rt = (TRecord [("1", t'), ("2", t)], loc) val n' = #maxName st val st = {decls = #decls st, script = #script st, included = #included st, injectors = #injectors st, listInjectors = TM.insert (#listInjectors st, t', n'), decoders = #decoders st, maxName = n' + 1} val s = (TFfi ("Basis", "string"), loc) val (e', st) = quoteExp loc t' ((EField ((ERel 0, loc), "1"), loc), st) val body = (ECase ((ERel 0, loc), [((PNone rt, loc), str loc "null"), ((PSome (rt, (PVar ("x", rt), loc)), loc), strcat loc [str loc "{_1:", e', str loc ",_2:", (EApp ((ENamed n', loc), (EField ((ERel 0, loc), "2"), loc)), loc), str loc "}"])], {disc = t, result = s}), loc) val body = (EAbs ("x", t, s, body), loc) val st = {decls = ("jsify", n', (TFun (t, s), loc), body, "jsify") :: #decls st, script = #script st, included = #included st, injectors = #injectors st, listInjectors = #listInjectors st, decoders= #decoders st, maxName = #maxName st} in ((EApp ((ENamed n', loc), e), loc), st) end) | TDatatype (n, ref (dk, cs)) => (case IM.find (#injectors st, n) of SOME n' => ((EApp ((ENamed n', loc), e), loc), st) | NONE => let val n' = #maxName st val st = {decls = #decls st, script = #script st, included = #included st, injectors = IM.insert (#injectors st, n, n'), listInjectors = #listInjectors st, decoders = #decoders st, maxName = n' + 1} val (pes, st) = ListUtil.foldlMap (fn ((_, cn, NONE), st) => (((PCon (dk, PConVar cn, NONE), loc), case dk of Option => str loc "null" | _ => str loc (Int.toString cn)), st) | ((_, cn, SOME t), st) => let val (e, st) = quoteExp loc t ((ERel 0, loc), st) in (((PCon (dk, PConVar cn, SOME (PVar ("x", t), loc)), loc), case dk of Option => if isNullable t then strcat loc [str loc "{v:", e, str loc "}"] else e | _ => strcat loc [str loc ("{n:" ^ Int.toString cn ^ ",v:"), e, str loc "}"]), st) end) st cs val s = (TFfi ("Basis", "string"), loc) val body = (ECase ((ERel 0, loc), pes, {disc = t, result = s}), loc) val body = (EAbs ("x", t, s, body), loc) val st = {decls = ("jsify", n', (TFun (t, s), loc), body, "jsify") :: #decls st, script = #script st, included = #included st, injectors = #injectors st, listInjectors = #listInjectors st, decoders= #decoders st, maxName = #maxName st} in ((EApp ((ENamed n', loc), e), loc), st) end) | _ => ((*Print.prefaces "Can't embed" [("t", MonoPrint.p_typ MonoEnv.empty t)];*) raise CantEmbed t) fun unurlifyExp loc (t : typ, st) = case #1 t of TRecord [] => ("(i++,null)", st) | TFfi ("Basis", "unit") => ("(i++,null)", st) | TRecord [(x, t)] => let val (e, st) = unurlifyExp loc (t, st) in ("{_" ^ x ^ ":" ^ e ^ "}", st) end | TRecord ((x, t) :: xts) => let val (e', st) = unurlifyExp loc (t, st) val (es, st) = ListUtil.foldlMap (fn ((x, t), st) => let val (e, st) = unurlifyExp loc (t, st) in (",_" ^ x ^ ":" ^ e, st) end) st xts in (String.concat ("{_" :: x :: ":" :: e' :: es @ ["}"]), st) end | TFfi ("Basis", "string") => ("uu(t[i++])", st) | TFfi ("Basis", "char") => ("uu(t[i++])", st) | TFfi ("Basis", "int") => ("parseInt(t[i++])", st) | TFfi ("Basis", "time") => ("parseInt(t[i++])", st) | TFfi ("Basis", "float") => ("parseFloat(t[i++])", st) | TFfi ("Basis", "channel") => ("(t[i++].length > 0 ? parseInt(t[i-1]) : null)", st) | TFfi ("Basis", "bool") => ("t[i++] == \"1\"", st) | TSource => ("parseSource(t[i++], t[i++])", st) | TOption t => let val (e, st) = unurlifyExp loc (t, st) val e = if isNullable t then "{v:" ^ e ^ "}" else e in ("(t[i++]==\"Some\"?" ^ e ^ ":null)", st) end | TList t => let val (e, st) = unurlifyExp loc (t, st) in ("uul(function(){return t[i++];},function(){return " ^ e ^ "})", st) end | TDatatype (n, ref (dk, cs)) => (case IM.find (#decoders st, n) of SOME n' => ("(tmp=_n" ^ Int.toString n' ^ "(t,i),i=tmp._1,tmp._2)", st) | NONE => let val n' = #maxName st val st = {decls = #decls st, script = #script st, included = #included st, injectors = #injectors st, listInjectors = #listInjectors st, decoders = IM.insert (#decoders st, n, n'), maxName = n' + 1} val (e, st) = foldl (fn ((x, cn, NONE), (e, st)) => ("x==\"" ^ x ^ "\"?" ^ (case dk of Option => "null" | _ => Int.toString cn) ^ ":" ^ e, st) | ((x, cn, SOME t), (e, st)) => let val (e', st) = unurlifyExp loc (t, st) in ("x==\"" ^ x ^ "\"?" ^ (case dk of Option => if isNullable t then "{v:" ^ e' ^ "}" else e' | _ => "{n:" ^ Int.toString cn ^ ",v:" ^ e' ^ "}") ^ ":" ^ e, st) end) ("pf(\"" ^ ErrorMsg.spanToString loc ^ "\")", st) cs val body = "function _n" ^ Int.toString n' ^ "(t,i){var x=t[i++];var r=" ^ e ^ ";return {_1:i,_2:r}}\n\n" val st = {decls = #decls st, script = body :: #script st, included = #included st, injectors = #injectors st, listInjectors = #listInjectors st, decoders = #decoders st, maxName = #maxName st} in ("(tmp=_n" ^ Int.toString n' ^ "(t,i),i=tmp._1,tmp._2)", st) end) | _ => (EM.errorAt loc "Don't know how to unurlify type in JavaScript"; Print.prefaces "Can't unurlify" [("t", MonoPrint.p_typ MonoEnv.empty t)]; ("ERROR", st)) fun padWith (ch, s, len) = if size s < len then padWith (ch, String.str ch ^ s, len - 1) else s val foundJavaScript = ref false fun jsExp mode outer = let val len = length outer fun jsE inner (e as (_, loc), st) = let val str = str loc fun patCon pc = case pc of PConVar n => str (Int.toString n) | PConFfi {mod = "Basis", con = "True", ...} => str "true" | PConFfi {mod = "Basis", con = "False", ...} => str "false" | PConFfi {con, ...} => str ("\"" ^ con ^ "\"") fun unsupported s = (EM.errorAt loc (s ^ " in code to be compiled to JavaScript[2]"); Print.preface ("Code", MonoPrint.p_exp MonoEnv.empty e); (str "ERROR", st)) val strcat = strcat loc fun jsPrim p = let fun jsChar ch = case ch of #"'" => if mode = Attribute then "\\047" else "'" | #"\"" => "\\\"" | #"<" => "\\074" | #"\\" => "\\\\" | #"\n" => "\\n" | #"\r" => "\\r" | #"\t" => "\\t" | ch => if Char.isPrint ch orelse ord ch >= 128 then String.str ch else "\\" ^ padWith (#"0", Int.fmt StringCvt.OCT (ord ch), 3) in case p of Prim.String s => str ("\"" ^ String.translate jsChar s ^ "\"") | Prim.Char ch => str ("\"" ^ jsChar ch ^ "\"") | _ => str (Prim.toString p) end fun jsPat (p, _) = case p of PWild => str "{c:\"w\"}" | PVar _ => str "{c:\"v\"}" | PPrim p => strcat [str "{c:\"c\",v:", jsPrim p, str "}"] | PCon (_, PConFfi {mod = "Basis", con = "True", ...}, NONE) => str "{c:\"c\",v:true}" | PCon (_, PConFfi {mod = "Basis", con = "False", ...}, NONE) => str "{c:\"c\",v:false}" | PCon (Option, _, NONE) => str "{c:\"c\",v:null}" | PCon (Option, PConVar n, SOME p) => (case IM.find (someTs, n) of NONE => raise Fail "Jscomp: Not in someTs" | SOME t => strcat [str ("{c:\"s\",n:" ^ (if isNullable t then "true" else "false") ^ ",p:"), jsPat p, str "}"]) | PCon (_, pc, NONE) => strcat [str "{c:\"c\",v:", patCon pc, str "}"] | PCon (_, pc, SOME p) => strcat [str "{c:\"1\",n:", patCon pc, str ",p:", jsPat p, str "}"] | PRecord xps => strcat [str "{c:\"r\",l:", foldr (fn ((x, p, _), e) => strcat [str ("cons({n:\"" ^ x ^ "\",p:"), jsPat p, str "},", e, str ")"]) (str "null") xps, str "}"] | PNone _ => str "{c:\"c\",v:null}" | PSome (t, p) => strcat [str ("{c:\"s\",n:" ^ (if isNullable t then "true" else "false") ^ ",p:"), jsPat p, str "}"] val jsifyString = String.translate (fn #"\"" => "\\\"" | #"\\" => "\\\\" | ch => String.str ch) fun jsifyStringMulti (n, s) = case n of 0 => s | _ => jsifyStringMulti (n - 1, jsifyString s) fun deStrcat level (all as (e, _)) = case e of EPrim (Prim.String s) => jsifyStringMulti (level, s) | EStrcat (e1, e2) => deStrcat level e1 ^ deStrcat level e2 | EFfiApp ("Basis", "jsifyString", [e]) => "\"" ^ deStrcat (level + 1) e ^ "\"" | _ => (Print.prefaces "deStrcat" [("e", MonoPrint.p_exp MonoEnv.empty all)]; raise Fail "Jscomp: deStrcat") val quoteExp = quoteExp loc in (*Print.prefaces "jsE" [("e", MonoPrint.p_exp MonoEnv.empty e), ("inner", Print.PD.string (Int.toString inner))];*) case #1 e of EPrim p => (strcat [str "{c:\"c\",v:", jsPrim p, str "}"], st) | ERel n => if n < inner then (str ("{c:\"v\",n:" ^ Int.toString n ^ "}"), st) else let val n = n - inner (*val () = Print.prefaces "quote" [("t", MonoPrint.p_typ MonoEnv.empty (List.nth (outer, n)))]*) val (e, st) = quoteExp (List.nth (outer, n)) ((ERel n, loc), st) in (strcat [str "{c:\"c\",v:", e, str "}"], st) end | ENamed n => let val st = if IS.member (#included st, n) then st else case IM.find (nameds, n) of NONE => raise Fail "Jscomp: Unbound ENamed" | SOME e => let val st = {decls = #decls st, script = #script st, included = IS.add (#included st, n), injectors = #injectors st, listInjectors = #listInjectors st, decoders = #decoders st, maxName = #maxName st} val old = e val (e, st) = jsExp mode [] (e, st) val e = deStrcat 0 e val e = String.translate (fn #"'" => "\\'" | #"\\" => "\\\\" | ch => String.str ch) e val sc = "urfuncs[" ^ Int.toString n ^ "] = {c:\"t\",f:'" ^ e ^ "'};\n" in (*Print.prefaces "jsify'" [("old", MonoPrint.p_exp MonoEnv.empty old), ("new", MonoPrint.p_exp MonoEnv.empty new)];*) {decls = #decls st, script = sc :: #script st, included = #included st, injectors = #injectors st, listInjectors = #listInjectors st, decoders= #decoders st, maxName = #maxName st} end in (str ("{c:\"n\",n:" ^ Int.toString n ^ "}"), st) end | ECon (Option, _, NONE) => (str "{c:\"c\",v:null}", st) | ECon (Option, PConVar n, SOME e) => let val (e, st) = jsE inner (e, st) in case IM.find (someTs, n) of NONE => raise Fail "Jscomp: Not in someTs [2]" | SOME t => (if isNullable t then strcat [str "{c:\"s\",v:", e, str "}"] else e, st) end | ECon (_, pc, NONE) => (strcat [str "{c:\"c\",v:", patCon pc, str "}"], st) | ECon (_, pc, SOME e) => let val (s, st) = jsE inner (e, st) in (strcat [str "{c:\"1\",n:", patCon pc, str ",v:", s, str "}"], st) end | ENone _ => (str "{c:\"c\",v:null}", st) | ESome (t, e) => let val (e, st) = jsE inner (e, st) in (if isNullable t then strcat [str "{c:\"s\",v:", e, str "}"] else e, st) end | EFfi k => let val name = case Settings.jsFunc k of NONE => (EM.errorAt loc ("Unsupported FFI identifier " ^ #2 k ^ " in JavaScript"); "ERROR") | SOME s => s in (str ("{c:\"c\",v:" ^ name ^ "}"), st) end | EFfiApp ("Basis", "sigString", [_]) => (strcat [str "{c:\"c\",v:\"", e, str "\"}"], st) | EFfiApp (m, x, args) => let val name = case Settings.jsFunc (m, x) of NONE => (EM.errorAt loc ("Unsupported FFI function " ^ m ^ "." ^ x ^ " in JavaScript"); "ERROR") | SOME s => s val (e, st) = foldr (fn (e, (acc, st)) => let val (e, st) = jsE inner (e, st) in (strcat [str "cons(", e, str ",", acc, str ")"], st) end) (str "null", st) args in (strcat [str ("{c:\"f\",f:\"" ^ name ^ "\",a:"), e, str "}"], st) end | EApp (e1, e2) => let val (e1, st) = jsE inner (e1, st) val (e2, st) = jsE inner (e2, st) in (strcat [str "{c:\"a\",f:", e1, str ",x:", e2, str "}"], st) end | EAbs (_, _, _, e) => let val (e, st) = jsE (inner + 1) (e, st) in (strcat [str "{c:\"l\",b:", e, str "}"], st) end | EUnop (s, e) => let val name = case s of "!" => "not" | "-" => "neg" | _ => raise Fail ("Jscomp: Unknown unary operator " ^ s) val (e, st) = jsE inner (e, st) in (strcat [str ("{c:\"f\",f:\"" ^ name ^ "\",a:cons("), e, str ",null)}"], st) end | EBinop (bi, s, e1, e2) => let val name = case s of "==" => "eq" | "!strcmp" => "eq" | "+" => "plus" | "-" => "minus" | "*" => "times" | "/" => (case bi of Int => "divInt" | NotInt => "div") | "%" => (case bi of Int => "modInt" | NotInt => "mod") | "fdiv" => "div" | "fmod" => "mod" | "<" => "lt" | "<=" => "le" | "strcmp" => "strcmp" | _ => raise Fail ("Jscomp: Unknown binary operator " ^ s) val (e1, st) = jsE inner (e1, st) val (e2, st) = jsE inner (e2, st) in (strcat [str ("{c:\"f\",f:\"" ^ name ^ "\",a:cons("), e1, str ",cons(", e2, str ",null))}"], st) end | ERecord [] => (str "{c:\"c\",v:null}", st) | ERecord xes => let val (es, st) = foldr (fn ((x, e, _), (es, st)) => let val (e, st) = jsE inner (e, st) in (strcat [str ("cons({n:\"" ^ x ^ "\",v:"), e, str "},", es, str ")"], st) end) (str "null", st) xes in (strcat [str "{c:\"r\",l:", es, str "}"], st) end | EField (e', x) => let fun default () = let val (e', st) = jsE inner (e', st) in (strcat [str "{c:\".\",r:", e', str (",f:\"" ^ x ^ "\"}")], st) end fun seek (e, xs) = case #1 e of ERel n => if n < inner then default () else let val n = n - inner val t = List.nth (outer, n) val t = foldl (fn (x, (TRecord xts, _)) => (case List.find (fn (x', _) => x' = x) xts of NONE => raise Fail "Jscomp: Bad seek [1]" | SOME (_, t) => t) | _ => raise Fail "Jscomp: Bad seek [2]") t xs val e = (ERel n, loc) val e = foldl (fn (x, e) => (EField (e, x), loc)) e xs val (e, st) = quoteExp t (e, st) in (strcat [str "{c:\"c\",v:", e, str "}"], st) end | EField (e', x) => seek (e', x :: xs) | _ => default () in seek (e', [x]) end | ECase (e', pes, _) => let val (e', st) = jsE inner (e', st) val (ps, st) = foldr (fn ((p, e), (ps, st)) => let val (e, st) = jsE (inner + E.patBindsN p) (e, st) in (strcat [str "cons({p:", jsPat p, str ",b:", e, str "},", ps, str ")"], st) end) (str "null", st) pes in (strcat [str "{c:\"m\",e:", e', str ",p:", ps, str "}"], st) end | EStrcat (e1, e2) => let val (e1, st) = jsE inner (e1, st) val (e2, st) = jsE inner (e2, st) in (strcat [str "{c:\"f\",f:\"cat\",a:cons(", e1, str ",cons(", e2, str ",null))}"], st) end | EError (e, _) => let val (e, st) = jsE inner (e, st) in (strcat [str "{c:\"f\",f:\"er\",a:cons(", e, str ",null)}"], st) end | ESeq (e1, e2) => let val (e1, st) = jsE inner (e1, st) val (e2, st) = jsE inner (e2, st) in (strcat [str "{c:\";\",e1:", e1, str ",e2:", e2, str "}"], st) end | ELet (_, _, e1, e2) => let val (e1, st) = jsE inner (e1, st) val (e2, st) = jsE (inner + 1) (e2, st) in (strcat [str "{c:\"=\",e1:", e1, str ",e2:", e2, str "}"], st) end | EJavaScript (Source _, e) => (foundJavaScript := true; jsE inner (e, st)) | EJavaScript (_, e) => let val (e, st) = jsE inner (e, st) in foundJavaScript := true; (strcat [str "{c:\"e\",e:", e, str "}"], st) end | EWrite _ => unsupported "EWrite" | EClosure _ => unsupported "EClosure" | EQuery _ => unsupported "Query" | EDml _ => unsupported "DML" | ENextval _ => unsupported "Nextval" | ESetval _ => unsupported "Nextval" | EReturnBlob _ => unsupported "EReturnBlob" | ERedirect (e, _) => let val (e, st) = jsE inner (e, st) in (strcat [str "{c:\"f\",f:\"redirect\",a:cons(", e, str ",null)}"], st) end | EUnurlify (_, _, true) => unsupported "EUnurlify" | EUnurlify (e, t, false) => let val (e, st) = jsE inner (e, st) val (e', st) = unurlifyExp loc (t, st) in (strcat [str ("{c:\"f\",f:\"unurlify\",a:cons({c:\"c\",v:function(s){var t=s.split(\"/\");var i=0;return " ^ e' ^ "}},cons("), e, str ",null))}"], st) end | ESignalReturn e => let val (e, st) = jsE inner (e, st) in (strcat [str "{c:\"f\",f:\"sr\",a:cons(", e, str ",null)}"], st) end | ESignalBind (e1, e2) => let val (e1, st) = jsE inner (e1, st) val (e2, st) = jsE inner (e2, st) in (strcat [str "{c:\"f\",f:\"sb\",a:cons(", e1, str ",cons(", e2, str ",null))}"], st) end | ESignalSource e => let val (e, st) = jsE inner (e, st) in (strcat [str "{c:\"f\",f:\"ss\",a:cons(", e, str ",null)}"], st) end | EServerCall (e, t, eff) => let val (e, st) = jsE inner (e, st) val (unurl, st) = unurlifyExp loc (t, st) in (strcat [str ("{c:\"f\",f:\"rc\",a:cons({c:\"c\",v:\"" ^ Settings.getUrlPrefix () ^ "\"},cons("), e, str (",cons({c:\"c\",v:function(s){var t=s.split(\"/\");var i=0;return " ^ unurl ^ "}},cons({c:\"K\"},cons({c:\"c\",v:" ^ (case eff of ReadCookieWrite => "true" | _ => "false") ^ "},null)))))}")], st) end | ERecv (e, t) => let val (e, st) = jsE inner (e, st) val (unurl, st) = unurlifyExp loc (t, st) in (strcat [str ("{c:\"f\",f:\"rv\",a:cons("), e, str (",cons({c:\"c\",v:function(s){var t=s.split(\"/\");var i=0;return " ^ unurl ^ "}},cons({c:\"K\"},null)))}")], st) end | ESleep e => let val (e, st) = jsE inner (e, st) in (strcat [str "{c:\"f\",f:\"sl\",a:cons(", e, str ",cons({c:\"K\"},null))}"], st) end | ESpawn e => let val (e, st) = jsE inner (e, st) in (strcat [str "{c:\"f\",f:\"sp\",a:cons(", e, str ",null)}"], st) end end in jsE 0 end fun patBinds ((p, _), env) = case p of PWild => env | PVar (_, t) => t :: env | PPrim _ => env | PCon (_, _, NONE) => env | PCon (_, _, SOME p) => patBinds (p, env) | PRecord xpts => foldl (fn ((_, p, _), env) => patBinds (p, env)) env xpts | PNone _ => env | PSome (_, p) => patBinds (p, env) fun exp outer (e as (_, loc), st) = ((*Print.preface ("exp", MonoPrint.p_exp MonoEnv.empty e);*) case #1 e of EPrim p => (case p of Prim.String s => if inString {needle = "<script", haystack = s} then foundJavaScript := true else () | _ => (); (e, st)) | ERel _ => (e, st) | ENamed _ => (e, st) | ECon (_, _, NONE) => (e, st) | ECon (dk, pc, SOME e) => let val (e, st) = exp outer (e, st) in ((ECon (dk, pc, SOME e), loc), st) end | ENone _ => (e, st) | ESome (t, e) => let val (e, st) = exp outer (e, st) in ((ESome (t, e), loc), st) end | EFfi _ => (e, st) | EFfiApp (m, x, es) => let val (es, st) = ListUtil.foldlMap (exp outer) st es in ((EFfiApp (m, x, es), loc), st) end | EApp (e1, e2) => let val (e1, st) = exp outer (e1, st) val (e2, st) = exp outer (e2, st) in ((EApp (e1, e2), loc), st) end | EAbs (x, dom, ran, e) => let val (e, st) = exp (dom :: outer) (e, st) in ((EAbs (x, dom, ran, e), loc), st) end | EUnop (s, e) => let val (e, st) = exp outer (e, st) in ((EUnop (s, e), loc), st) end | EBinop (bi, s, e1, e2) => let val (e1, st) = exp outer (e1, st) val (e2, st) = exp outer (e2, st) in ((EBinop (bi, s, e1, e2), loc), st) end | ERecord xets => let val (xets, st) = ListUtil.foldlMap (fn ((x, e, t), st) => let val (e, st) = exp outer (e, st) in ((x, e, t), st) end) st xets in ((ERecord xets, loc), st) end | EField (e, s) => let val (e, st) = exp outer (e, st) in ((EField (e, s), loc), st) end | ECase (e, pes, ts) => let val (e, st) = exp outer (e, st) val (pes, st) = ListUtil.foldlMap (fn ((p, e), st) => let val (e, st) = exp (patBinds (p, outer)) (e, st) in ((p, e), st) end) st pes in ((ECase (e, pes, ts), loc), st) end | EStrcat (e1, e2) => let val (e1, st) = exp outer (e1, st) val (e2, st) = exp outer (e2, st) in ((EStrcat (e1, e2), loc), st) end | EError (e, t) => let val (e, st) = exp outer (e, st) in ((EError (e, t), loc), st) end | EReturnBlob {blob, mimeType, t} => let val (blob, st) = exp outer (blob, st) val (mimeType, st) = exp outer (mimeType, st) in ((EReturnBlob {blob = blob, mimeType = mimeType, t = t}, loc), st) end | ERedirect (e, t) => let val (e, st) = exp outer (e, st) in ((ERedirect (e, t), loc), st) end | EWrite e => let val (e, st) = exp outer (e, st) in ((EWrite e, loc), st) end | ESeq (e1, e2) => let val (e1, st) = exp outer (e1, st) val (e2, st) = exp outer (e2, st) in ((ESeq (e1, e2), loc), st) end | ELet (x, t, e1, e2) => let val (e1, st) = exp outer (e1, st) val (e2, st) = exp (t :: outer) (e2, st) in ((ELet (x, t, e1, e2), loc), st) end | EClosure (n, es) => let val (es, st) = ListUtil.foldlMap (exp outer) st es in ((EClosure (n, es), loc), st) end | EQuery {exps, tables, state, query, body, initial} => let val row = exps @ map (fn (x, xts) => (x, (TRecord xts, loc))) tables val row = ListMergeSort.sort (fn ((x, _), (y, _)) => String.compare (x, y) = GREATER) row val row = (TRecord row, loc) val (query, st) = exp outer (query, st) val (body, st) = exp (state :: row :: outer) (body, st) val (initial, st) = exp outer (initial, st) in ((EQuery {exps = exps, tables = tables, state = state, query = query, body = body, initial = initial}, loc), st) end | EDml (e, mode) => let val (e, st) = exp outer (e, st) in ((EDml (e, mode), loc), st) end | ENextval e => let val (e, st) = exp outer (e, st) in ((ENextval e, loc), st) end | ESetval (e1, e2) => let val (e1, st) = exp outer (e1, st) val (e2, st) = exp outer (e2, st) in ((ESetval (e1, e2), loc), st) end | EUnurlify (e, t, b) => let val (e, st) = exp outer (e, st) in ((EUnurlify (e, t, b), loc), st) end | EJavaScript (m as Source t, e') => (foundJavaScript := true; let val (x', st) = jsExp m (t :: outer) ((ERel 0, loc), st) in ((ELet ("x", t, e', x'), loc), st) end handle CantEmbed _ => (jsExp m outer (e', st) handle CantEmbed t => ((*ErrorMsg.errorAt loc "Unable to embed type in JavaScript"; Print.preface ("Type", MonoPrint.p_typ MonoEnv.empty t);*) (e, st)))) | EJavaScript (m, e') => (foundJavaScript := true; jsExp m outer (e', st) handle CantEmbed t => ((*ErrorMsg.errorAt loc "Unable to embed type in JavaScript"; Print.preface ("Type", MonoPrint.p_typ MonoEnv.empty t);*) (e, st))) | ESignalReturn e => let val (e, st) = exp outer (e, st) in ((ESignalReturn e, loc), st) end | ESignalBind (e1, e2) => let val (e1, st) = exp outer (e1, st) val (e2, st) = exp outer (e2, st) in ((ESignalBind (e1, e2), loc), st) end | ESignalSource e => let val (e, st) = exp outer (e, st) in ((ESignalSource e, loc), st) end | EServerCall (e1, t, ef) => let val (e1, st) = exp outer (e1, st) in ((EServerCall (e1, t, ef), loc), st) end | ERecv (e1, t) => let val (e1, st) = exp outer (e1, st) in ((ERecv (e1, t), loc), st) end | ESleep e1 => let val (e1, st) = exp outer (e1, st) in ((ESleep e1, loc), st) end | ESpawn e1 => let val (e1, st) = exp outer (e1, st) in ((ESpawn e1, loc), st) end) fun decl (d as (_, loc), st) = case #1 d of DVal (x, n, t, e, s) => let val (e, st) = exp [] (e, st) in ((DVal (x, n, t, e, s), loc), st) end | DValRec vis => let val (vis, st) = ListUtil.foldlMap (fn ((x, n, t, e, s), st) => let val (e, st) = exp [] (e, st) in ((x, n, t, e, s), st) end) st vis in ((DValRec vis, loc), st) end | _ => (d, st) fun doDecl (d, st) = let (*val () = Print.preface ("doDecl", MonoPrint.p_decl MonoEnv.empty d)*) val (d, st) = decl (d, st) val ds = case #decls st of [] => [d] | vis => [(DValRec vis, #2 d), d] in (ds, {decls = [], script = #script st, included = #included st, injectors = #injectors st, listInjectors = #listInjectors st, decoders = #decoders st, maxName = #maxName st}) end val (ds, st) = ListUtil.foldlMapConcat doDecl {decls = [], script = [], included = IS.empty, injectors = IM.empty, listInjectors = TM.empty, decoders = IM.empty, maxName = U.File.maxName file + 1} file val inf = TextIO.openIn (OS.Path.joinDirFile {dir = Config.libJs, file = "urweb.js"}) fun lines acc = case TextIO.inputLine inf of NONE => String.concat (rev acc) | SOME line => lines (line :: acc) val lines = lines [] val urlRules = foldr (fn (r, s) => "cons({allow:" ^ (if #action r = Settings.Allow then "true" else "false") ^ ",prefix:" ^ (if #kind r = Settings.Prefix then "true" else "false") ^ ",pattern:\"" ^ #pattern r ^ "\"}," ^ s ^ ")") "null" (Settings.getUrlRules ()) val urlRules = "urlRules = " ^ urlRules ^ ";\n\n" val script = if !foundJavaScript then lines ^ urlRules ^ String.concat (rev (#script st)) ^ "\ntime_format = \"" ^ String.toCString (Settings.getTimeFormat ()) ^ "\";\n" else "" in TextIO.closeIn inf; (DJavaScript script, ErrorMsg.dummySpan) :: ds end end