Mercurial > urweb

annotate src/elab.sml @ 42:b3fbbc6cb1e5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Elaborating 'where'
author Adam Chlipala <adamc@hcoop.net>
date Thu, 19 Jun 2008 16:35:40 -0400
parents 1405d8c26790
children a9f3ce2d1b9b
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@2 37
adamc@2 38 | KError
adamc@2 39 | KUnif of string * kind option ref
adamc@2 40
adamc@2 41 withtype kind = kind' located
adamc@2 42
adamc@2 43 datatype explicitness =
adamc@2 44 Explicit
adamc@2 45 | Implicit
adamc@2 46
adamc@2 47 datatype con' =
adamc@2 48 TFun of con * con
adamc@2 49 | TCFun of explicitness * string * kind * con
adamc@2 50 | TRecord of con
adamc@2 51
adamc@2 52 | CRel of int
adamc@2 53 | CNamed of int
adamc@34 54 | CModProj of int * string list * string
adamc@2 55 | CApp of con * con
adamc@8 56 | CAbs of string * kind * con
adamc@2 57
adamc@2 58 | CName of string
adamc@2 59
adamc@2 60 | CRecord of kind * (con * con) list
adamc@2 61 | CConcat of con * con
adamc@2 62
adamc@2 63 | CError
adamc@6 64 | CUnif of kind * string * con option ref
adamc@2 65
adamc@2 66 withtype con = con' located
adamc@2 67
adamc@9 68 datatype exp' =
adamc@14 69 EPrim of Prim.t
adamc@14 70 | ERel of int
adamc@9 71 | ENamed of int
adamc@34 72 | EModProj of int * string list * string
adamc@9 73 | EApp of exp * exp
adamc@26 74 | EAbs of string * con * con * exp
adamc@9 75 | ECApp of exp * con
adamc@9 76 | ECAbs of explicitness * string * kind * exp
adamc@9 77
adamc@29 78 | ERecord of (con * exp * con) list
adamc@12 79 | EField of exp * con * { field : con, rest : con }
adamc@12 80
adamc@9 81 | EError
adamc@9 82
adamc@9 83 withtype exp = exp' located
adamc@9 84
adamc@31 85 datatype sgn_item' =
adamc@31 86 SgiConAbs of string * int * kind
adamc@31 87 | SgiCon of string * int * kind * con
adamc@31 88 | SgiVal of string * int * con
adamc@31 89 | SgiStr of string * int * sgn
adamc@31 90
adamc@31 91 and sgn' =
adamc@31 92 SgnConst of sgn_item list
adamc@31 93 | SgnVar of int
adamc@41 94 | SgnFun of string * int * sgn * sgn
adamc@42 95 | SgnWhere of sgn * string * con
adamc@31 96 | SgnError
adamc@31 97
adamc@31 98 withtype sgn_item = sgn_item' located
adamc@31 99 and sgn = sgn' located
adamc@31 100
adamc@2 101 datatype decl' =
adamc@5 102 DCon of string * int * kind * con
adamc@9 103 | DVal of string * int * con * exp
adamc@31 104 | DSgn of string * int * sgn
adamc@31 105 | DStr of string * int * sgn * str
adamc@31 106
adamc@31 107 and str' =
adamc@31 108 StrConst of decl list
adamc@31 109 | StrVar of int
adamc@34 110 | StrProj of str * string
adamc@41 111 | StrFun of string * int * sgn * sgn * str
adamc@31 112 | StrError
adamc@2 113
adamc@2 114 withtype decl = decl' located
adamc@31 115 and str = str' located
adamc@31 116
adamc@2 117 type file = decl list
adamc@2 118
adamc@2 119 end