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annotate src/elab.sml @ 211:e86411f647c6

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Initial type class support
author Adam Chlipala <adamc@hcoop.net>
date Sat, 16 Aug 2008 14:32:18 -0400
parents cc68da3801bc
children 0343557355fc
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@2 49 datatype con' =
adamc@2 50 TFun of con * con
adamc@2 51 | TCFun of explicitness * string * kind * con
adamc@85 52 | TDisjoint of con * con * con
adamc@2 53 | TRecord of con
adamc@2 54
adamc@2 55 | CRel of int
adamc@2 56 | CNamed of int
adamc@34 57 | CModProj of int * string list * string
adamc@2 58 | CApp of con * con
adamc@8 59 | CAbs of string * kind * con
adamc@84 60 | CDisjoint of con * con * con
adamc@2 61
adamc@2 62 | CName of string
adamc@2 63
adamc@2 64 | CRecord of kind * (con * con) list
adamc@2 65 | CConcat of con * con
adamc@67 66 | CFold of kind * kind
adamc@2 67
adamc@82 68 | CUnit
adamc@82 69
adamc@207 70 | CTuple of con list
adamc@207 71 | CProj of con * int
adamc@207 72
adamc@2 73 | CError
adamc@76 74 | CUnif of ErrorMsg.span * kind * string * con option ref
adamc@2 75
adamc@2 76 withtype con = con' located
adamc@2 77
adamc@188 78 datatype datatype_kind =
adamc@188 79 Enum
adamc@198 80 | Option
adamc@188 81 | Default
adamc@188 82
adamc@171 83 datatype patCon =
adamc@171 84 PConVar of int
adamc@171 85 | PConProj of int * string list * string
adamc@171 86
adamc@171 87 datatype pat' =
adamc@171 88 PWild
adamc@182 89 | PVar of string * con
adamc@173 90 | PPrim of Prim.t
adamc@191 91 | PCon of datatype_kind * patCon * con list * pat option
adamc@182 92 | PRecord of (string * pat * con) list
adamc@171 93
adamc@171 94 withtype pat = pat' located
adamc@171 95
adamc@9 96 datatype exp' =
adamc@14 97 EPrim of Prim.t
adamc@14 98 | ERel of int
adamc@9 99 | ENamed of int
adamc@34 100 | EModProj of int * string list * string
adamc@9 101 | EApp of exp * exp
adamc@26 102 | EAbs of string * con * con * exp
adamc@9 103 | ECApp of exp * con
adamc@9 104 | ECAbs of explicitness * string * kind * exp
adamc@9 105
adamc@29 106 | ERecord of (con * exp * con) list
adamc@12 107 | EField of exp * con * { field : con, rest : con }
adamc@149 108 | ECut of exp * con * { field : con, rest : con }
adamc@71 109 | EFold of kind
adamc@12 110
adamc@182 111 | ECase of exp * (pat * exp) list * { disc : con, result : con }
adamc@171 112
adamc@9 113 | EError
adamc@9 114
adamc@9 115 withtype exp = exp' located
adamc@9 116
adamc@31 117 datatype sgn_item' =
adamc@31 118 SgiConAbs of string * int * kind
adamc@31 119 | SgiCon of string * int * kind * con
adamc@191 120 | SgiDatatype of string * int * string list * (string * int * con option) list
adamc@191 121 | SgiDatatypeImp of string * int * int * string list * string * string list * (string * int * con option) list
adamc@31 122 | SgiVal of string * int * con
adamc@31 123 | SgiStr of string * int * sgn
adamc@59 124 | SgiSgn of string * int * sgn
adamc@88 125 | SgiConstraint of con * con
adamc@205 126 | SgiTable of int * string * int * con
adamc@211 127 | SgiClassAbs of string * int
adamc@211 128 | SgiClass of string * int * con
adamc@31 129
adamc@31 130 and sgn' =
adamc@31 131 SgnConst of sgn_item list
adamc@31 132 | SgnVar of int
adamc@41 133 | SgnFun of string * int * sgn * sgn
adamc@42 134 | SgnWhere of sgn * string * con
adamc@59 135 | SgnProj of int * string list * string
adamc@31 136 | SgnError
adamc@31 137
adamc@31 138 withtype sgn_item = sgn_item' located
adamc@31 139 and sgn = sgn' located
adamc@31 140
adamc@2 141 datatype decl' =
adamc@5 142 DCon of string * int * kind * con
adamc@191 143 | DDatatype of string * int * string list * (string * int * con option) list
adamc@191 144 | DDatatypeImp of string * int * int * string list * string * string list * (string * int * con option) list
adamc@9 145 | DVal of string * int * con * exp
adamc@123 146 | DValRec of (string * int * con * exp) list
adamc@31 147 | DSgn of string * int * sgn
adamc@31 148 | DStr of string * int * sgn * str
adamc@48 149 | DFfiStr of string * int * sgn
adamc@88 150 | DConstraint of con * con
adamc@109 151 | DExport of int * sgn * str
adamc@205 152 | DTable of int * string * int * con
adamc@31 153
adamc@31 154 and str' =
adamc@31 155 StrConst of decl list
adamc@31 156 | StrVar of int
adamc@34 157 | StrProj of str * string
adamc@41 158 | StrFun of string * int * sgn * sgn * str
adamc@44 159 | StrApp of str * str
adamc@31 160 | StrError
adamc@2 161
adamc@2 162 withtype decl = decl' located
adamc@31 163 and str = str' located
adamc@31 164
adamc@2 165 type file = decl list
adamc@2 166
adamc@2 167 end