Mercurial > urweb

annotate src/main.mlton.sml @ 1741:d6e233db97c8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Reinitialize lexer state properly
author Adam Chlipala <adam@chlipala.net>
date Fri, 04 May 2012 10:07:27 -0400
parents c414850f206f
children 6fcce0592178
rev   line source
adam@1677 1 (* Copyright (c) 2008-2012, Adam Chlipala
adamc@0 2 * All rights reserved.
adamc@0 3 *
adamc@0 4 * Redistribution and use in source and binary forms, with or without
adamc@0 5 * modification, are permitted provided that the following conditions are met:
adamc@0 6 *
adamc@0 7 * - Redistributions of source code must retain the above copyright notice,
adamc@0 8 * this list of conditions and the following disclaimer.
adamc@0 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@0 10 * this list of conditions and the following disclaimer in the documentation
adamc@0 11 * and/or other materials provided with the distribution.
adamc@0 12 * - The names of contributors may not be used to endorse or promote products
adamc@0 13 * derived from this software without specific prior written permission.
adamc@0 14 *
adamc@0 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@0 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@0 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@0 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@0 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@0 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@0 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@0 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@0 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@0 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@0 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@0 26 *)
adamc@0 27
adam@1733 28 val socket = ".urweb_daemon"
adamc@857 29
adam@1733 30 (* Encapsulate main invocation handler in a function, possibly to be called multiple times within a daemon. *)
adam@1540 31
adam@1733 32 exception Code of OS.Process.status
adam@1520 33
adam@1733 34 fun oneRun args =
adam@1733 35 let
adam@1733 36 val timing = ref false
adam@1733 37 val tc = ref false
adam@1733 38 val sources = ref ([] : string list)
adam@1733 39 val demo = ref (NONE : (string * bool) option)
adam@1733 40 val tutorial = ref false
adam@1733 41 val css = ref false
adamc@208 42
adam@1733 43 val () = (Compiler.debug := false;
adam@1733 44 Elaborate.dumpTypes := false;
adam@1733 45 Elaborate.unifyMore := false;
adam@1733 46 Compiler.dumpSource := false;
adam@1733 47 Compiler.doIflow := false;
adam@1733 48 Demo.noEmacs := false;
adam@1733 49 Settings.setDebug false)
adamc@208 50
adam@1733 51 val () = Compiler.beforeC := MLton.GC.pack
adamc@279 52
adam@1733 53 fun printVersion () = (print (Config.versionString ^ "\n");
adam@1733 54 raise Code OS.Process.success)
adam@1733 55 fun printNumericVersion () = (print (Config.versionNumber ^ "\n");
adam@1733 56 raise Code OS.Process.success)
adam@1733 57
adam@1733 58 fun doArgs args =
adam@1733 59 case args of
adam@1733 60 [] => ()
adam@1733 61 | "-version" :: rest =>
adam@1733 62 printVersion ()
adam@1733 63 | "-numeric-version" :: rest =>
adam@1733 64 printNumericVersion ()
adam@1733 65 | "-css" :: rest =>
adam@1733 66 (css := true;
adam@1733 67 doArgs rest)
adam@1733 68 | "-demo" :: prefix :: rest =>
adam@1733 69 (demo := SOME (prefix, false);
adam@1733 70 doArgs rest)
adam@1733 71 | "-guided-demo" :: prefix :: rest =>
adam@1733 72 (demo := SOME (prefix, true);
adam@1733 73 doArgs rest)
adam@1733 74 | "-tutorial" :: rest =>
adam@1733 75 (tutorial := true;
adam@1733 76 doArgs rest)
adam@1733 77 | "-protocol" :: name :: rest =>
adam@1733 78 (Settings.setProtocol name;
adam@1733 79 doArgs rest)
adam@1733 80 | "-prefix" :: prefix :: rest =>
adam@1733 81 (Settings.setUrlPrefix prefix;
adam@1733 82 doArgs rest)
adam@1733 83 | "-db" :: s :: rest =>
adam@1733 84 (Settings.setDbstring (SOME s);
adam@1733 85 doArgs rest)
adam@1733 86 | "-dbms" :: name :: rest =>
adam@1733 87 (Settings.setDbms name;
adam@1733 88 doArgs rest)
adam@1733 89 | "-debug" :: rest =>
adam@1733 90 (Settings.setDebug true;
adam@1733 91 doArgs rest)
adam@1733 92 | "-verbose" :: rest =>
adam@1733 93 (Compiler.debug := true;
adam@1733 94 doArgs rest)
adam@1733 95 | "-timing" :: rest =>
adam@1733 96 (timing := true;
adam@1733 97 doArgs rest)
adam@1733 98 | "-tc" :: rest =>
adam@1733 99 (tc := true;
adam@1733 100 doArgs rest)
adam@1733 101 | "-dumpTypes" :: rest =>
adam@1733 102 (Elaborate.dumpTypes := true;
adam@1733 103 doArgs rest)
adam@1733 104 | "-unifyMore" :: rest =>
adam@1733 105 (Elaborate.unifyMore := true;
adam@1733 106 doArgs rest)
adam@1733 107 | "-dumpSource" :: rest =>
adam@1733 108 (Compiler.dumpSource := true;
adam@1733 109 doArgs rest)
adam@1733 110 | "-output" :: s :: rest =>
adam@1733 111 (Settings.setExe (SOME s);
adam@1733 112 doArgs rest)
adam@1733 113 | "-sql" :: s :: rest =>
adam@1733 114 (Settings.setSql (SOME s);
adam@1733 115 doArgs rest)
adam@1733 116 | "-static" :: rest =>
adam@1733 117 (Settings.setStaticLinking true;
adam@1733 118 doArgs rest)
adam@1733 119 | "-path" :: name :: path :: rest =>
adam@1733 120 (Compiler.addPath (name, path);
adam@1733 121 doArgs rest)
adam@1733 122 | "-root" :: name :: root :: rest =>
adam@1733 123 (Compiler.addModuleRoot (root, name);
adam@1733 124 doArgs rest)
ezyang@1739 125 | "-boot" :: rest =>
ezyang@1739 126 (Compiler.enableBoot ();
ezyang@1739 127 Settings.setStaticLinking true;
ezyang@1739 128 doArgs rest)
adam@1733 129 | "-sigfile" :: name :: rest =>
adam@1733 130 (Settings.setSigFile (SOME name);
adam@1733 131 doArgs rest)
adam@1733 132 | "-iflow" :: rest =>
adam@1733 133 (Compiler.doIflow := true;
adam@1733 134 doArgs rest)
adam@1733 135 | "-moduleOf" :: fname :: _ =>
adam@1733 136 (print (Compiler.moduleOf fname ^ "\n");
adam@1733 137 raise Code OS.Process.success)
adam@1733 138 | "-noEmacs" :: rest =>
adam@1733 139 (Demo.noEmacs := true;
adam@1733 140 doArgs rest)
adam@1733 141 | "-limit" :: class :: num :: rest =>
adam@1733 142 (case Int.fromString num of
adam@1733 143 NONE => raise Fail ("Invalid limit number '" ^ num ^ "'")
adam@1733 144 | SOME n =>
adam@1733 145 if n < 0 then
adam@1733 146 raise Fail ("Invalid limit number '" ^ num ^ "'")
adam@1733 147 else
adam@1733 148 Settings.addLimit (class, n);
adam@1733 149 doArgs rest)
adam@1733 150 | arg :: rest =>
adam@1733 151 (if size arg > 0 andalso String.sub (arg, 0) = #"-" then
adam@1733 152 raise Fail ("Unknown flag " ^ arg)
adam@1733 153 else
adam@1733 154 sources := arg :: !sources;
adam@1733 155 doArgs rest)
adam@1733 156
adam@1733 157 val () = case args of
adam@1733 158 ["daemon", "stop"] => OS.Process.exit OS.Process.success
adam@1733 159 | _ => ()
adam@1733 160
adam@1733 161 val () = doArgs args
adam@1733 162
adam@1733 163 val job =
adam@1733 164 case !sources of
adam@1733 165 [file] => file
adam@1733 166 | _ => printVersion ()
adam@1733 167 in
adam@1733 168 case (!css, !demo, !tutorial) of
adam@1733 169 (true, _, _) =>
adam@1733 170 (case Compiler.run Compiler.toCss job of
adam@1733 171 NONE => OS.Process.failure
adam@1733 172 | SOME {Overall = ov, Classes = cl} =>
adam@1733 173 (app (print o Css.inheritableToString) ov;
adam@1733 174 print "\n";
adam@1733 175 app (fn (x, (ins, ots)) =>
adam@1733 176 (print x;
adam@1733 177 print " ";
adam@1733 178 app (print o Css.inheritableToString) ins;
adam@1733 179 app (print o Css.othersToString) ots;
adam@1733 180 print "\n")) cl;
adam@1733 181 OS.Process.success))
adam@1733 182 | (_, SOME (prefix, guided), _) =>
adam@1733 183 if Demo.make' {prefix = prefix, dirname = job, guided = guided} then
adam@1733 184 OS.Process.success
adam@1733 185 else
adam@1733 186 OS.Process.failure
adam@1733 187 | (_, _, true) => (Tutorial.make job;
adam@1733 188 OS.Process.success)
adam@1733 189 | _ =>
adam@1733 190 if !tc then
adam@1733 191 (Compiler.check Compiler.toElaborate job;
adam@1733 192 if ErrorMsg.anyErrors () then
adam@1733 193 OS.Process.failure
adam@1733 194 else
adam@1733 195 OS.Process.success)
adam@1733 196 else if !timing then
adam@1733 197 (Compiler.time Compiler.toCjrize job;
adam@1733 198 OS.Process.success)
adam@1733 199 else
adam@1733 200 (if Compiler.compile job then
adam@1733 201 OS.Process.success
adam@1733 202 else
adam@1733 203 OS.Process.failure)
adam@1733 204 end handle Code n => n
adam@1733 205
adam@1733 206 fun send (sock, s) =
adam@1733 207 let
adam@1733 208 val n = Socket.sendVec (sock, Word8VectorSlice.full (Vector.map (Word8.fromInt o ord) s))
adam@1733 209 in
adam@1733 210 if n >= size s then
adam@1733 211 ()
adamc@384 212 else
adam@1733 213 send (sock, String.extract (s, n, NONE))
adam@1733 214 end
adam@1733 215
adam@1733 216 val () = case CommandLine.arguments () of
adam@1733 217 ["daemon", "start"] =>
adam@1733 218 (case Posix.Process.fork () of
adam@1733 219 SOME _ => ()
adam@1733 220 | NONE =>
adam@1733 221 let
adam@1733 222 val () = Elaborate.incremental := true
adam@1733 223 val listen = UnixSock.Strm.socket ()
adam@1733 224
adam@1733 225 fun loop () =
adam@1733 226 let
adam@1733 227 val (sock, _) = Socket.accept listen
adam@1733 228
adam@1733 229 fun loop' (buf, args) =
adam@1733 230 let
adam@1733 231 val s = if CharVector.exists (fn ch => ch = #"\n") buf then
adam@1733 232 ""
adam@1733 233 else
adam@1733 234 Vector.map (chr o Word8.toInt) (Socket.recvVec (sock, 1024))
adam@1733 235 val s = buf ^ s
adam@1733 236 val (befor, after) = Substring.splitl (fn ch => ch <> #"\n") (Substring.full s)
adam@1733 237 in
adam@1733 238 if Substring.isEmpty after then
adam@1733 239 loop' (s, args)
adam@1733 240 else
adam@1733 241 let
adam@1733 242 val cmd = Substring.string befor
adam@1733 243 val rest = Substring.string (Substring.slice (after, 1, NONE))
adam@1733 244 in
adam@1733 245 case cmd of
adam@1733 246 "" => send (sock, if OS.Process.isSuccess ((oneRun (rev args))
adam@1733 247 handle ex => (print "unhandled exception:\n";
adam@1733 248 print (General.exnMessage ex ^ "\n");
adam@1733 249 OS.Process.failure)) then
adam@1733 250 "0"
adam@1733 251 else
adam@1733 252 "1")
adam@1733 253 | _ => loop' (rest, cmd :: args)
adam@1733 254 end
adam@1733 255 end handle OS.SysErr _ => ()
adam@1733 256 in
adam@1733 257 loop' ("", []);
adam@1733 258 Socket.close sock;
adam@1733 259 MLton.GC.pack ();
adam@1733 260 loop ()
adam@1733 261 end
adam@1733 262 in
adam@1733 263 OS.Process.atExit (fn () => OS.FileSys.remove socket);
adam@1733 264 Socket.bind (listen, UnixSock.toAddr socket);
adam@1733 265 Socket.listen (listen, 1);
adam@1733 266 loop ()
adam@1733 267 end)
adam@1733 268
adam@1733 269 | args =>
adam@1733 270 let
adam@1733 271 val sock = UnixSock.Strm.socket ()
adam@1733 272
adam@1733 273 fun wait () =
adam@1733 274 let
adam@1733 275 val v = Socket.recvVec (sock, 1)
adam@1733 276 in
adam@1733 277 if Vector.length v = 0 then
adam@1733 278 OS.Process.failure
adam@1733 279 else
adam@1733 280 case chr (Word8.toInt (Vector.sub (v, 0))) of
adam@1733 281 #"0" => OS.Process.success
adam@1733 282 | #"1" => OS.Process.failure
adam@1733 283 | _ => raise Fail "Weird return code from daemon"
adam@1733 284 end handle OS.SysErr _ => OS.Process.failure
adam@1733 285 in
adam@1733 286 if Socket.connectNB (sock, UnixSock.toAddr socket)
adam@1733 287 orelse not (List.null (#wrs (Socket.select {rds = [],
adam@1733 288 wrs = [Socket.sockDesc sock],
adam@1733 289 exs = [],
adam@1733 290 timeout = SOME (Time.fromSeconds 1)}))) then
adam@1733 291 (app (fn arg => send (sock, arg ^ "\n")) args;
adam@1733 292 send (sock, "\n");
adam@1733 293 OS.Process.exit (wait ()))
adam@1733 294 else
adam@1733 295 (OS.FileSys.remove socket;
adam@1733 296 raise OS.SysErr ("", NONE))
adam@1733 297 end handle OS.SysErr _ => case args of
adam@1733 298 ["daemon", "stop"] => (OS.FileSys.remove socket handle OS.SysErr _ => ())
adam@1733 299 | _ => OS.Process.exit (oneRun args)