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Explify
author Adam Chlipala <adamc@hcoop.net>
date Thu, 19 Jun 2008 10:06:59 -0400
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children 1405d8c26790
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37:367f058aba23 38:d16ef24de78b
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 structure Explify :> EXPLIFY = struct
29
30 structure EM = ErrorMsg
31 structure L = Elab
32 structure L' = Expl
33
34 fun explifyKind (k, loc) =
35 case k of
36 L.KType => (L'.KType, loc)
37 | L.KArrow (k1, k2) => (L'.KArrow (explifyKind k1, explifyKind k2), loc)
38 | L.KName => (L'.KName, loc)
39 | L.KRecord k => (L'.KRecord (explifyKind k), loc)
40
41 | L.KError => raise Fail ("explifyKind: KError at " ^ EM.spanToString loc)
42 | L.KUnif (_, ref (SOME k)) => explifyKind k
43 | L.KUnif _ => raise Fail ("explifyKind: KUnif at " ^ EM.spanToString loc)
44
45 fun explifyCon (c, loc) =
46 case c of
47 L.TFun (t1, t2) => (L'.TFun (explifyCon t1, explifyCon t2), loc)
48 | L.TCFun (_, x, k, t) => (L'.TCFun (x, explifyKind k, explifyCon t), loc)
49 | L.TRecord c => (L'.TRecord (explifyCon c), loc)
50
51 | L.CRel n => (L'.CRel n, loc)
52 | L.CNamed n => (L'.CNamed n, loc)
53 | L.CModProj (m, ms, x) => (L'.CModProj (m, ms, x), loc)
54
55 | L.CApp (c1, c2) => (L'.CApp (explifyCon c1, explifyCon c2), loc)
56 | L.CAbs (x, k, c) => (L'.CAbs (x, explifyKind k, explifyCon c), loc)
57
58 | L.CName s => (L'.CName s, loc)
59
60 | L.CRecord (k, xcs) => (L'.CRecord (explifyKind k, map (fn (c1, c2) => (explifyCon c1, explifyCon c2)) xcs), loc)
61 | L.CConcat (c1, c2) => (L'.CConcat (explifyCon c1, explifyCon c2), loc)
62
63 | L.CError => raise Fail ("explifyCon: CError at " ^ EM.spanToString loc)
64 | L.CUnif (_, _, ref (SOME c)) => explifyCon c
65 | L.CUnif _ => raise Fail ("explifyCon: CUnif at " ^ EM.spanToString loc)
66
67 fun explifyExp (e, loc) =
68 case e of
69 L.EPrim p => (L'.EPrim p, loc)
70 | L.ERel n => (L'.ERel n, loc)
71 | L.ENamed n => (L'.ENamed n, loc)
72 | L.EModProj (m, ms, x) => (L'.EModProj (m, ms, x), loc)
73 | L.EApp (e1, e2) => (L'.EApp (explifyExp e1, explifyExp e2), loc)
74 | L.EAbs (x, dom, ran, e1) => (L'.EAbs (x, explifyCon dom, explifyCon ran, explifyExp e1), loc)
75 | L.ECApp (e1, c) => (L'.ECApp (explifyExp e1, explifyCon c), loc)
76 | L.ECAbs (_, x, k, e1) => (L'.ECAbs (x, explifyKind k, explifyExp e1), loc)
77
78 | L.ERecord xes => (L'.ERecord (map (fn (c, e, t) => (explifyCon c, explifyExp e, explifyCon t)) xes), loc)
79 | L.EField (e1, c, {field, rest}) => (L'.EField (explifyExp e1, explifyCon c,
80 {field = explifyCon field, rest = explifyCon rest}), loc)
81
82 | L.EError => raise Fail ("explifyExp: EError at " ^ EM.spanToString loc)
83
84 fun explifySgi (sgi, loc) =
85 case sgi of
86 L.SgiConAbs (x, n, k) => (L'.SgiConAbs (x, n, explifyKind k), loc)
87 | L.SgiCon (x, n, k, c) => (L'.SgiCon (x, n, explifyKind k, explifyCon c), loc)
88 | L.SgiVal (x, n, c) => (L'.SgiVal (x, n, explifyCon c), loc)
89 | L.SgiStr (x, n, sgn) => (L'.SgiStr (x, n, explifySgn sgn), loc)
90
91 and explifySgn (sgn, loc) =
92 case sgn of
93 L.SgnConst sgis => (L'.SgnConst (map explifySgi sgis), loc)
94 | L.SgnVar n => (L'.SgnVar n, loc)
95 | L.SgnError => raise Fail ("explifySgn: SgnError at " ^ EM.spanToString loc)
96
97 fun explifyDecl (d, loc : EM.span) =
98 case d of
99 L.DCon (x, n, k, c) => (L'.DCon (x, n, explifyKind k, explifyCon c), loc)
100 | L.DVal (x, n, t, e) => (L'.DVal (x, n, explifyCon t, explifyExp e), loc)
101
102 | L.DSgn (x, n, sgn) => (L'.DSgn (x, n, explifySgn sgn), loc)
103 | L.DStr (x, n, sgn, str) => (L'.DStr (x, n, explifySgn sgn, explifyStr str), loc)
104
105 and explifyStr (str, loc) =
106 case str of
107 L.StrConst ds => (L'.StrConst (map explifyDecl ds), loc)
108 | L.StrVar n => (L'.StrVar n, loc)
109 | L.StrProj (str, s) => (L'.StrProj (explifyStr str, s), loc)
110 | L.StrError => raise Fail ("explifyStr: StrError at " ^ EM.spanToString loc)
111
112 val explify = map explifyDecl
113
114 end