Mercurial > urweb

annotate src/rpcify.sml @ 908:ed06e25c70ef

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Convert to requiring explicit 'rpc' marker
author Adam Chlipala <adamc@hcoop.net>
date Sat, 22 Aug 2009 12:55:18 -0400
parents a28982de5645
children 2a50da66ffd8
rev   line source
adamc@607 1 (* Copyright (c) 2009, Adam Chlipala
adamc@607 2 * All rights reserved.
adamc@607 3 *
adamc@607 4 * Redistribution and use in source and binary forms, with or without
adamc@607 5 * modification, are permitted provided that the following conditions are met:
adamc@607 6 *
adamc@607 7 * - Redistributions of source code must retain the above copyright notice,
adamc@607 8 * this list of conditions and the following disclaimer.
adamc@607 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@607 10 * this list of conditions and the following disclaimer in the documentation
adamc@607 11 * and/or other materials provided with the distribution.
adamc@607 12 * - The names of contributors may not be used to endorse or promote products
adamc@607 13 * derived from this software without specific prior written permission.
adamc@607 14 *
adamc@607 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@607 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@607 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@607 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@607 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@607 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@607 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@607 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@607 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@607 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@607 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@607 26 *)
adamc@607 27
adamc@607 28 structure Rpcify :> RPCIFY = struct
adamc@607 29
adamc@607 30 open Core
adamc@607 31
adamc@607 32 structure U = CoreUtil
adamc@607 33 structure E = CoreEnv
adamc@607 34
adamc@607 35 structure IS = IntBinarySet
adamc@607 36 structure IM = IntBinaryMap
adamc@607 37
adamc@607 38 structure SS = BinarySetFn(struct
adamc@607 39 type ord_key = string
adamc@607 40 val compare = String.compare
adamc@607 41 end)
adamc@607 42
adamc@607 43 type state = {
adamc@608 44 exported : IS.set,
adamc@908 45 export_decls : decl list
adamc@607 46 }
adamc@607 47
adamc@607 48 fun frob file =
adamc@607 49 let
adamc@908 50 val rpcBaseIds = foldl (fn ((d, _), rpcIds) =>
adamc@908 51 case d of
adamc@908 52 DVal (_, n, _, (EFfi ("Basis", "rpc"), _), _) => IS.add (rpcIds, n)
adamc@908 53 | DVal (_, n, _, (ENamed n', _), _) => if IS.member (rpcIds, n') then
adamc@908 54 IS.add (rpcIds, n)
adamc@908 55 else
adamc@908 56 rpcIds
adamc@908 57 | _ => rpcIds)
adamc@908 58 IS.empty file
adamc@607 59
adamc@609 60 val tfuncs = foldl
adamc@609 61 (fn ((d, _), tfuncs) =>
adamc@609 62 let
adamc@642 63 fun doOne ((x, n, t, e, _), tfuncs) =
adamc@609 64 let
adamc@642 65 val loc = #2 e
adamc@642 66
adamc@642 67 fun crawl (t, e, args) =
adamc@642 68 case (#1 t, #1 e) of
adamc@642 69 (CApp (_, ran), _) =>
adamc@642 70 SOME (x, rev args, ran, e)
adamc@642 71 | (TFun (arg, rest), EAbs (x, _, _, e)) =>
adamc@642 72 crawl (rest, e, (x, arg) :: args)
adamc@642 73 | (TFun (arg, rest), _) =>
adamc@642 74 crawl (rest, (EApp (e, (ERel (length args), loc)), loc), ("x", arg) :: args)
adamc@609 75 | _ => NONE
adamc@609 76 in
adamc@642 77 case crawl (t, e, []) of
adamc@609 78 NONE => tfuncs
adamc@609 79 | SOME sg => IM.insert (tfuncs, n, sg)
adamc@609 80 end
adamc@609 81 in
adamc@609 82 case d of
adamc@609 83 DVal vi => doOne (vi, tfuncs)
adamc@609 84 | DValRec vis => foldl doOne tfuncs vis
adamc@609 85 | _ => tfuncs
adamc@609 86 end)
adamc@609 87 IM.empty file
adamc@609 88
adamc@607 89 fun exp (e, st) =
adamc@649 90 let
adamc@649 91 fun getApp (e', args) =
adamc@908 92 case e' of
adamc@908 93 ENamed n => SOME (n, args)
adamc@908 94 | EApp (e1, e2) => getApp (#1 e1, e2 :: args)
adamc@908 95 | _ => NONE
adamc@642 96
adamc@908 97 fun newRpc (trans : exp, st : state) =
adamc@908 98 case getApp (#1 trans, []) of
adamc@908 99 NONE => (ErrorMsg.errorAt (#2 trans)
adamc@908 100 "RPC code doesn't use a named function or transaction";
adamc@908 101 (#1 trans, st))
adamc@908 102 | SOME (n, args) =>
adamc@908 103 case IM.find (tfuncs, n) of
adamc@908 104 NONE => ((*Print.prefaces "BAD" [("e", CorePrint.p_exp CoreEnv.empty (e, loc))];*)
adamc@908 105 raise Fail ("Rpcify: Undetected transaction function " ^ Int.toString n))
adamc@908 106 | SOME (_, _, ran, _) =>
adamc@908 107 let
adamc@908 108 val loc = #2 trans
adamc@642 109
adamc@908 110 val (exported, export_decls) =
adamc@908 111 if IS.member (#exported st, n) then
adamc@908 112 (#exported st, #export_decls st)
adamc@908 113 else
adamc@908 114 (IS.add (#exported st, n),
adamc@908 115 (DExport (Rpc ReadWrite, n), loc) :: #export_decls st)
adamc@642 116
adamc@908 117 val st = {exported = exported,
adamc@908 118 export_decls = export_decls}
adamc@642 119
adamc@908 120 val k = (ECApp ((EFfi ("Basis", "return"), loc),
adamc@908 121 (CFfi ("Basis", "transaction"), loc)), loc)
adamc@908 122 val k = (ECApp (k, ran), loc)
adamc@908 123 val k = (EApp (k, (EFfi ("Basis", "transaction_monad"), loc)), loc)
adamc@908 124 val e' = EServerCall (n, args, k, ran, ran)
adamc@651 125 in
adamc@908 126 (e', st)
adamc@651 127 end
adamc@649 128 in
adamc@649 129 case e of
adamc@908 130 EApp ((ECApp ((EFfi ("Basis", "rpc"), _), ran), _), trans) => newRpc (trans, st)
adamc@908 131 | EApp ((ECApp ((ENamed n, _), ran), _), trans) =>
adamc@908 132 if IS.member (rpcBaseIds, n) then
adamc@908 133 newRpc (trans, st)
adamc@908 134 else
adamc@908 135 (e, st)
adamc@642 136
adamc@649 137 | _ => (e, st)
adamc@649 138 end
adamc@607 139
adamc@642 140 and doExp (e, st) = U.Exp.foldMap {kind = fn x => x,
adamc@642 141 con = fn x => x,
adamc@642 142 exp = exp} st (ReduceLocal.reduceExp e)
adamc@642 143
adamc@607 144 fun decl (d, st : state) =
adamc@607 145 let
adamc@607 146 val (d, st) = U.Decl.foldMap {kind = fn x => x,
adamc@607 147 con = fn x => x,
adamc@607 148 exp = exp,
adamc@607 149 decl = fn x => x}
adamc@607 150 st d
adamc@607 151 in
adamc@908 152 (#export_decls st @ [d],
adamc@908 153 {exported = #exported st,
adamc@908 154 export_decls = []})
adamc@607 155 end
adamc@607 156
adamc@607 157 val (file, _) = ListUtil.foldlMapConcat decl
adamc@908 158 {exported = IS.empty,
adamc@908 159 export_decls = []}
adamc@607 160 file
adamc@607 161 in
adamc@607 162 file
adamc@607 163 end
adamc@607 164
adamc@607 165 end