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annotate src/elab.sml @ 541:2bf2d0e0fb61

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Type inference
author Adam Chlipala <adamc@hcoop.net>
date Sat, 06 Dec 2008 12:01:12 -0500
parents ae03d09043c1
children 44958d74c43f
rev   line source
adamc@2 1 (* Copyright (c) 2008, Adam Chlipala
adamc@2 2 * All rights reserved.
adamc@2 3 *
adamc@2 4 * Redistribution and use in source and binary forms, with or without
adamc@2 5 * modification, are permitted provided that the following conditions are met:
adamc@2 6 *
adamc@2 7 * - Redistributions of source code must retain the above copyright notice,
adamc@2 8 * this list of conditions and the following disclaimer.
adamc@2 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@2 10 * this list of conditions and the following disclaimer in the documentation
adamc@2 11 * and/or other materials provided with the distribution.
adamc@2 12 * - The names of contributors may not be used to endorse or promote products
adamc@2 13 * derived from this software without specific prior written permission.
adamc@2 14 *
adamc@2 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@2 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@2 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@2 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@2 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@2 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@2 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@2 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@2 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@2 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@2 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@2 26 *)
adamc@2 27
adamc@2 28 structure Elab = struct
adamc@2 29
adamc@2 30 type 'a located = 'a ErrorMsg.located
adamc@2 31
adamc@2 32 datatype kind' =
adamc@2 33 KType
adamc@2 34 | KArrow of kind * kind
adamc@2 35 | KName
adamc@2 36 | KRecord of kind
adamc@82 37 | KUnit
adamc@207 38 | KTuple of kind list
adamc@2 39
adamc@2 40 | KError
adamc@76 41 | KUnif of ErrorMsg.span * string * kind option ref
adamc@2 42
adamc@2 43 withtype kind = kind' located
adamc@2 44
adamc@2 45 datatype explicitness =
adamc@2 46 Explicit
adamc@2 47 | Implicit
adamc@2 48
adamc@334 49 datatype auto_instantiate =
adamc@334 50 Instantiate
adamc@334 51 | LeaveAlone
adamc@334 52
adamc@2 53 datatype con' =
adamc@2 54 TFun of con * con
adamc@2 55 | TCFun of explicitness * string * kind * con
adamc@2 56 | TRecord of con
adamc@2 57
adamc@2 58 | CRel of int
adamc@2 59 | CNamed of int
adamc@34 60 | CModProj of int * string list * string
adamc@2 61 | CApp of con * con
adamc@8 62 | CAbs of string * kind * con
adamc@345 63 | CDisjoint of auto_instantiate * con * con * con
adamc@2 64
adamc@2 65 | CName of string
adamc@2 66
adamc@2 67 | CRecord of kind * (con * con) list
adamc@2 68 | CConcat of con * con
adamc@67 69 | CFold of kind * kind
adamc@2 70
adamc@82 71 | CUnit
adamc@82 72
adamc@207 73 | CTuple of con list
adamc@207 74 | CProj of con * int
adamc@207 75
adamc@2 76 | CError
adamc@76 77 | CUnif of ErrorMsg.span * kind * string * con option ref
adamc@2 78
adamc@2 79 withtype con = con' located
adamc@2 80
adamc@188 81 datatype datatype_kind =
adamc@188 82 Enum
adamc@198 83 | Option
adamc@188 84 | Default
adamc@188 85
adamc@171 86 datatype patCon =
adamc@171 87 PConVar of int
adamc@171 88 | PConProj of int * string list * string
adamc@171 89
adamc@171 90 datatype pat' =
adamc@171 91 PWild
adamc@182 92 | PVar of string * con
adamc@173 93 | PPrim of Prim.t
adamc@191 94 | PCon of datatype_kind * patCon * con list * pat option
adamc@182 95 | PRecord of (string * pat * con) list
adamc@171 96
adamc@171 97 withtype pat = pat' located
adamc@171 98
adamc@9 99 datatype exp' =
adamc@14 100 EPrim of Prim.t
adamc@14 101 | ERel of int
adamc@9 102 | ENamed of int
adamc@34 103 | EModProj of int * string list * string
adamc@9 104 | EApp of exp * exp
adamc@26 105 | EAbs of string * con * con * exp
adamc@9 106 | ECApp of exp * con
adamc@9 107 | ECAbs of explicitness * string * kind * exp
adamc@9 108
adamc@29 109 | ERecord of (con * exp * con) list
adamc@12 110 | EField of exp * con * { field : con, rest : con }
adamc@445 111 | EConcat of exp * con * exp * con
adamc@149 112 | ECut of exp * con * { field : con, rest : con }
adamc@493 113 | ECutMulti of exp * con * { rest : con }
adamc@71 114 | EFold of kind
adamc@12 115
adamc@182 116 | ECase of exp * (pat * exp) list * { disc : con, result : con }
adamc@171 117
adamc@9 118 | EError
adamc@228 119 | EUnif of exp option ref
adamc@9 120
adamc@447 121 | ELet of edecl list * exp
adamc@447 122
adamc@447 123 and edecl' =
adamc@447 124 EDVal of string * con * exp
adamc@447 125 | EDValRec of (string * con * exp) list
adamc@447 126
adamc@9 127 withtype exp = exp' located
adamc@447 128 and edecl = edecl' located
adamc@9 129
adamc@31 130 datatype sgn_item' =
adamc@31 131 SgiConAbs of string * int * kind
adamc@31 132 | SgiCon of string * int * kind * con
adamc@191 133 | SgiDatatype of string * int * string list * (string * int * con option) list
adamc@191 134 | SgiDatatypeImp of string * int * int * string list * string * string list * (string * int * con option) list
adamc@31 135 | SgiVal of string * int * con
adamc@31 136 | SgiStr of string * int * sgn
adamc@59 137 | SgiSgn of string * int * sgn
adamc@88 138 | SgiConstraint of con * con
adamc@211 139 | SgiClassAbs of string * int
adamc@211 140 | SgiClass of string * int * con
adamc@31 141
adamc@31 142 and sgn' =
adamc@31 143 SgnConst of sgn_item list
adamc@31 144 | SgnVar of int
adamc@41 145 | SgnFun of string * int * sgn * sgn
adamc@42 146 | SgnWhere of sgn * string * con
adamc@59 147 | SgnProj of int * string list * string
adamc@31 148 | SgnError
adamc@31 149
adamc@31 150 withtype sgn_item = sgn_item' located
adamc@31 151 and sgn = sgn' located
adamc@31 152
adamc@2 153 datatype decl' =
adamc@5 154 DCon of string * int * kind * con
adamc@191 155 | DDatatype of string * int * string list * (string * int * con option) list
adamc@191 156 | DDatatypeImp of string * int * int * string list * string * string list * (string * int * con option) list
adamc@9 157 | DVal of string * int * con * exp
adamc@123 158 | DValRec of (string * int * con * exp) list
adamc@31 159 | DSgn of string * int * sgn
adamc@31 160 | DStr of string * int * sgn * str
adamc@48 161 | DFfiStr of string * int * sgn
adamc@88 162 | DConstraint of con * con
adamc@109 163 | DExport of int * sgn * str
adamc@205 164 | DTable of int * string * int * con
adamc@338 165 | DSequence of int * string * int
adamc@213 166 | DClass of string * int * con
adamc@271 167 | DDatabase of string
adamc@459 168 | DCookie of int * string * int * con
adamc@31 169
adamc@31 170 and str' =
adamc@31 171 StrConst of decl list
adamc@31 172 | StrVar of int
adamc@34 173 | StrProj of str * string
adamc@41 174 | StrFun of string * int * sgn * sgn * str
adamc@44 175 | StrApp of str * str
adamc@31 176 | StrError
adamc@2 177
adamc@2 178 withtype decl = decl' located
adamc@31 179 and str = str' located
adamc@31 180
adamc@2 181 type file = decl list
adamc@2 182
adamc@2 183 end