Mercurial > urweb

annotate src/source.sml @ 1668:64c1e65c2365

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Prevent horrifying loops in unification variable graph
author Adam Chlipala <adam@chlipala.net>
date Mon, 09 Jan 2012 16:20:10 -0500
parents b4480a56cab7
children 4a03aa3251cb
rev   line source
adamc@0 1 (* Copyright (c) 2008, Adam Chlipala
adamc@0 2 * All rights reserved.
adamc@0 3 *
adamc@0 4 * Redistribution and use in source and binary forms, with or without
adamc@0 5 * modification, are permitted provided that the following conditions are met:
adamc@0 6 *
adamc@0 7 * - Redistributions of source code must retain the above copyright notice,
adamc@0 8 * this list of conditions and the following disclaimer.
adamc@0 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@0 10 * this list of conditions and the following disclaimer in the documentation
adamc@0 11 * and/or other materials provided with the distribution.
adamc@0 12 * - The names of contributors may not be used to endorse or promote products
adamc@0 13 * derived from this software without specific prior written permission.
adamc@0 14 *
adamc@0 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@0 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@0 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@0 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@0 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@0 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@0 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@0 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@0 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@0 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@0 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@0 26 *)
adamc@0 27
adamc@4 28 structure Source = struct
adamc@0 29
adamc@0 30 type 'a located = 'a ErrorMsg.located
adamc@0 31
adamc@0 32 datatype kind' =
adamc@0 33 KType
adamc@0 34 | KArrow of kind * kind
adamc@0 35 | KName
adamc@0 36 | KRecord of kind
adamc@82 37 | KUnit
adamc@207 38 | KTuple of kind list
adamc@18 39 | KWild
adamc@0 40
adamc@623 41 | KFun of string * kind
adamc@623 42 | KVar of string
adamc@623 43
adamc@0 44 withtype kind = kind' located
adamc@0 45
adamc@1 46 datatype explicitness =
adamc@1 47 Explicit
adamc@1 48 | Implicit
adamc@1 49
adamc@0 50 datatype con' =
adamc@0 51 CAnnot of con * kind
adamc@0 52
adamc@0 53 | TFun of con * con
adamc@1 54 | TCFun of explicitness * string * kind * con
adamc@0 55 | TRecord of con
adamc@628 56 | TDisjoint of con * con * con
adamc@0 57
adamc@34 58 | CVar of string list * string
adamc@0 59 | CApp of con * con
adamc@67 60 | CAbs of string * kind option * con
adamc@0 61
adamc@623 62 | CKAbs of string * con
adamc@623 63 | TKFun of string * con
adamc@623 64
adamc@0 65 | CName of string
adamc@0 66
adamc@1 67 | CRecord of (con * con) list
adamc@0 68 | CConcat of con * con
adamc@621 69 | CMap
adamc@0 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@18 76 | CWild of kind
adamc@18 77
adamc@0 78 withtype con = con' located
adamc@0 79
adamc@706 80 datatype inference =
adamc@706 81 Infer
adamc@706 82 | DontInfer
adamc@706 83 | TypesOnly
adamc@706 84
adamc@30 85 datatype sgn_item' =
adamc@30 86 SgiConAbs of string * kind
adamc@30 87 | SgiCon of string * kind option * con
adamc@805 88 | SgiDatatype of (string * string list * (string * con option) list) list
adamc@156 89 | SgiDatatypeImp of string * string list * string
adamc@30 90 | SgiVal of string * con
adamc@707 91 | SgiTable of string * con * exp * exp
adamc@30 92 | SgiStr of string * sgn
adamc@59 93 | SgiSgn of string * sgn
adamc@58 94 | SgiInclude of sgn
adamc@88 95 | SgiConstraint of con * con
adamc@563 96 | SgiClassAbs of string * kind
adamc@563 97 | SgiClass of string * kind * con
adamc@30 98
adamc@30 99 and sgn' =
adamc@30 100 SgnConst of sgn_item list
adamc@30 101 | SgnVar of string
adamc@40 102 | SgnFun of string * sgn * sgn
adamc@42 103 | SgnWhere of sgn * string * con
adamc@59 104 | SgnProj of string * string list * string
adamc@30 105
adamc@706 106 and pat' =
adamc@706 107 PWild
adamc@706 108 | PVar of string
adamc@706 109 | PPrim of Prim.t
adamc@706 110 | PCon of string list * string * pat option
adamc@706 111 | PRecord of (string * pat) list * bool
adamc@822 112 | PAnnot of pat * con
adamc@30 113
adamc@706 114 and exp' =
adamc@706 115 EAnnot of exp * con
adamc@170 116
adamc@706 117 | EPrim of Prim.t
adamc@706 118 | EVar of string list * string * inference
adamc@706 119 | EApp of exp * exp
adamc@706 120 | EAbs of string * con option * exp
adamc@706 121 | ECApp of exp * con
adamc@706 122 | ECAbs of explicitness * string * kind * exp
adamc@706 123 | EDisjoint of con * con * exp
adamc@706 124 | EDisjointApp of exp
adamc@170 125
adamc@706 126 | EKAbs of string * exp
adamc@403 127
adamc@706 128 | ERecord of (con * exp) list
adamc@706 129 | EField of exp * con
adamc@706 130 | EConcat of exp * exp
adamc@706 131 | ECut of exp * con
adamc@706 132 | ECutMulti of exp * con
adamc@34 133
adamc@706 134 | EWild
adamc@34 135
adamc@706 136 | ECase of exp * (pat * exp) list
adamc@623 137
adamc@706 138 | ELet of edecl list * exp
adamc@446 139
adamc@446 140 and edecl' =
adamc@825 141 EDVal of pat * exp
adamc@446 142 | EDValRec of (string * con option * exp) list
adamc@446 143
adamc@706 144 withtype sgn_item = sgn_item' located
adamc@706 145 and sgn = sgn' located
adamc@706 146 and pat = pat' located
adamc@706 147 and exp = exp' located
adamc@446 148 and edecl = edecl' located
adamc@34 149
adamc@1 150 datatype decl' =
adamc@1 151 DCon of string * kind option * con
adamc@805 152 | DDatatype of (string * string list * (string * con option) list) list
adamc@156 153 | DDatatypeImp of string * string list * string
adamc@8 154 | DVal of string * con option * exp
adamc@123 155 | DValRec of (string * con option * exp) list
adamc@30 156 | DSgn of string * sgn
adamc@30 157 | DStr of string * sgn option * str
adamc@48 158 | DFfiStr of string * sgn
adamc@61 159 | DOpen of string * string list
adamc@88 160 | DConstraint of con * con
adamc@88 161 | DOpenConstraints of string * string list
adamc@109 162 | DExport of str
adamc@707 163 | DTable of string * con * exp * exp
adamc@338 164 | DSequence of string
adamc@754 165 | DView of string * exp
adamc@563 166 | DClass of string * kind * con
adamc@271 167 | DDatabase of string
adamc@459 168 | DCookie of string * con
adamc@720 169 | DStyle of string
adamc@1075 170 | DTask of exp * exp
adamc@1199 171 | DPolicy of exp
adam@1294 172 | DOnError of string * string list * string
adamc@30 173
adamc@30 174 and str' =
adamc@30 175 StrConst of decl list
adamc@30 176 | StrVar of string
adamc@34 177 | StrProj of str * string
adamc@40 178 | StrFun of string * sgn * sgn option * str
adamc@44 179 | StrApp of str * str
adamc@1 180
adamc@1 181 withtype decl = decl' located
adamc@30 182 and str = str' located
adamc@1 183
adamc@1 184 type file = decl list
adamc@1 185
adamc@0 186 end