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comparison src/elab.sml @ 2:64f09f7822c3

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Start of elaboration
author Adam Chlipala <adamc@hcoop.net>
date Sat, 26 Jan 2008 14:27:33 -0500
parents
children 258261a53842
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1:4202f6eda946 2:64f09f7822c3
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 Elab = struct
29
30 type 'a located = 'a ErrorMsg.located
31
32 datatype kind' =
33 KType
34 | KArrow of kind * kind
35 | KName
36 | KRecord of kind
37
38 | KError
39 | KUnif of string * kind option ref
40
41 withtype kind = kind' located
42
43 datatype explicitness =
44 Explicit
45 | Implicit
46
47 datatype con' =
48 TFun of con * con
49 | TCFun of explicitness * string * kind * con
50 | TRecord of con
51
52 | CRel of int
53 | CNamed of int
54 | CApp of con * con
55 | CAbs of explicitness * string * kind * con
56
57 | CName of string
58
59 | CRecord of kind * (con * con) list
60 | CConcat of con * con
61
62 | CError
63 | CUnif of string * con option ref
64
65 withtype con = con' located
66
67 datatype decl' =
68 DCon of string * kind * con
69
70 withtype decl = decl' located
71
72 type file = decl list
73
74 end