summaryrefslogtreecommitdiff
path: root/src/elab.sml
blob: 83a7f929d9b1d1b972c35b5498c675a530dc995a (plain)
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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
(* 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
       | KUnit
       | KTuple of kind list

       | KError
       | KUnif of ErrorMsg.span * string * kind option ref

       | KRel of int
       | KFun of string * kind

withtype kind = kind' located

datatype explicitness =
         Explicit
       | Implicit

datatype con' =
         TFun of con * con
       | TCFun of explicitness * string * kind * con
       | TRecord of con
       | TDisjoint of con * con * con

       | CRel of int
       | CNamed of int
       | CModProj of int * string list * string
       | CApp of con * con
       | CAbs of string * kind * con

       | CKAbs of string * con
       | CKApp of con * kind
       | TKFun of string * con

       | CName of string

       | CRecord of kind * (con * con) list
       | CConcat of con * con
       | CMap of kind * kind

       | CUnit

       | CTuple of con list
       | CProj of con * int

       | CError
       | CUnif of ErrorMsg.span * kind * string * con option ref

withtype con = con' located

datatype datatype_kind =
         Enum
       | Option
       | Default

datatype patCon =
         PConVar of int
       | PConProj of int * string list * string

datatype pat' =
         PWild
       | PVar of string * con
       | PPrim of Prim.t
       | PCon of datatype_kind * patCon * con list * pat option
       | PRecord of (string * pat * con) list

withtype pat = pat' located

datatype exp' =
         EPrim of Prim.t
       | ERel of int
       | ENamed of int
       | EModProj of int * string list * string
       | EApp of exp * exp
       | EAbs of string * con * con * exp
       | ECApp of exp * con
       | ECAbs of explicitness * string * kind * exp

       | EKAbs of string * exp
       | EKApp of exp * kind

       | ERecord of (con * exp * con) list
       | EField of exp * con * { field : con, rest : con }
       | EConcat of exp * con * exp * con
       | ECut of exp * con * { field : con, rest : con }
       | ECutMulti of exp * con * { rest : con }

       | ECase of exp * (pat * exp) list * { disc : con, result : con }

       | EError
       | EUnif of exp option ref

       | ELet of edecl list * exp

and edecl' =
    EDVal of string * con * exp
  | EDValRec of (string * con * exp) list

withtype exp = exp' located
     and edecl = edecl' located

datatype sgn_item' =
         SgiConAbs of string * int * kind
       | SgiCon of string * int * kind * con
       | SgiDatatype of string * int * string list * (string * int * con option) list
       | SgiDatatypeImp of string * int * int * string list * string * string list * (string * int * con option) list
       | SgiVal of string * int * con
       | SgiStr of string * int * sgn
       | SgiSgn of string * int * sgn
       | SgiConstraint of con * con
       | SgiClassAbs of string * int * kind
       | SgiClass of string * int * kind * con

and sgn' =
    SgnConst of sgn_item list
  | SgnVar of int
  | SgnFun of string * int * sgn * sgn
  | SgnWhere of sgn * string * con
  | SgnProj of int * string list * string
  | SgnError

withtype sgn_item = sgn_item' located
and sgn = sgn' located

datatype decl' =
         DCon of string * int * kind * con
       | DDatatype of string * int * string list * (string * int * con option) list
       | DDatatypeImp of string * int * int * string list * string * string list * (string * int * con option) list
       | DVal of string * int * con * exp
       | DValRec of (string * int * con * exp) list
       | DSgn of string * int * sgn
       | DStr of string * int * sgn * str
       | DFfiStr of string * int * sgn
       | DConstraint of con * con
       | DExport of int * sgn * str
       | DTable of int * string * int * con * exp * con * exp * con
       | DSequence of int * string * int
       | DClass of string * int * kind * con
       | DDatabase of string
       | DCookie of int * string * int * con

     and str' =
         StrConst of decl list
       | StrVar of int
       | StrProj of str * string
       | StrFun of string * int * sgn * sgn * str
       | StrApp of str * str
       | StrError

withtype decl = decl' located
     and str = str' located
               
type file = decl list

end