1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
(* Copyright (c) 2008, Adam Chlipala
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - The names of contributors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*)
structure Elab = struct
type 'a located = 'a ErrorMsg.located
datatype kind' =
KType
| KArrow of kind * kind
| KName
| KRecord of kind
| KError
| KUnif of string * kind option ref
withtype kind = kind' located
datatype explicitness =
Explicit
| Implicit
datatype con' =
TFun of con * con
| TCFun of explicitness * string * kind * con
| TRecord of con
| CRel of int
| CNamed of int
| CApp of con * con
| CAbs of string * kind * con
| CName of string
| CRecord of kind * (con * con) list
| CConcat of con * con
| CError
| CUnif of kind * string * con option ref
withtype con = con' located
datatype exp' =
EPrim of Prim.t
| ERel of int
| ENamed of int
| EApp of exp * exp
| EAbs of string * con * con * exp
| ECApp of exp * con
| ECAbs of explicitness * string * kind * exp
| ERecord of (con * exp * con) list
| EField of exp * con * { field : con, rest : con }
| EError
withtype exp = exp' located
datatype sgn_item' =
SgiConAbs of string * int * kind
| SgiCon of string * int * kind * con
| SgiVal of string * int * con
| SgiStr of string * int * sgn
and sgn' =
SgnConst of sgn_item list
| SgnVar of int
| SgnError
withtype sgn_item = sgn_item' located
and sgn = sgn' located
datatype decl' =
DCon of string * int * kind * con
| DVal of string * int * con * exp
| DSgn of string * int * sgn
| DStr of string * int * sgn * str
and str' =
StrConst of decl list
| StrVar of int
| StrError
withtype decl = decl' located
and str = str' located
type file = decl list
end
|
