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comparison src/reduce_local.sml @ 482:9117a7bf229c

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Especialize working reasonably well; need to add new closure representation pass
author Adam Chlipala <adamc@hcoop.net>
date Sun, 09 Nov 2008 11:53:52 -0500
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children 40b19310ea9a
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481:2280193bf298 482:9117a7bf229c
1 (* Copyright (c) 2008, Adam Chlipala
2 * All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
12 * - The names of contributors may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 *)
27
28 (* Simplify a Core program algebraically, without unfolding definitions *)
29
30 structure ReduceLocal :> REDUCE_LOCAL = struct
31
32 open Core
33
34 structure E = CoreEnv
35 structure U = CoreUtil
36
37 val subExpInExp = E.subExpInExp
38
39 fun default x = x
40
41 fun exp (e : exp') =
42 let
43 (*val () = Print.prefaces "exp" [("e", CorePrint.p_exp env (e, ErrorMsg.dummySpan))]*)
44
45 val r = case e of
46 EApp ((EAbs (x, t, _, e1), loc), e2) =>
47 ((*Print.prefaces "Substitute" [("x", Print.PD.string x),
48 ("t", CorePrint.p_con CoreEnv.empty t)];*)
49 #1 (reduceExp (subExpInExp (0, e2) e1)))
50
51 | EField ((ERecord xes, _), (CName x, _), _) =>
52 (case List.find (fn ((CName x', _), _, _) => x' = x
53 | _ => false) xes of
54 SOME (_, (e, _), _) => e
55 | NONE => e)
56
57 | _ => e
58 in
59 (*Print.prefaces "exp'" [("e", CorePrint.p_exp env (e, ErrorMsg.dummySpan)),
60 ("r", CorePrint.p_exp env (r, ErrorMsg.dummySpan))];*)
61
62 r
63 end
64
65 and reduceExp e = U.Exp.map {kind = default, con = default, exp = exp} e
66
67 val reduce = U.File.map {kind = default, con = default, exp = exp, decl = default}
68
69 end