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annotate src/elab.sml @ 67:9f89f0b00b84

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Elaborating cfold
author Adam Chlipala <adamc@hcoop.net>
date Thu, 26 Jun 2008 09:48:54 -0400
parents abb2b32c19fb
children 6431b315a1e3
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@67 62 | CFold of kind * kind
adamc@2 63
adamc@2 64 | CError
adamc@6 65 | CUnif of kind * string * con option ref
adamc@2 66
adamc@2 67 withtype con = con' located
adamc@2 68
adamc@9 69 datatype exp' =
adamc@14 70 EPrim of Prim.t
adamc@14 71 | ERel of int
adamc@9 72 | ENamed of int
adamc@34 73 | EModProj of int * string list * string
adamc@9 74 | EApp of exp * exp
adamc@26 75 | EAbs of string * con * con * exp
adamc@9 76 | ECApp of exp * con
adamc@9 77 | ECAbs of explicitness * string * kind * exp
adamc@9 78
adamc@29 79 | ERecord of (con * exp * con) list
adamc@12 80 | EField of exp * con * { field : con, rest : con }
adamc@12 81
adamc@9 82 | EError
adamc@9 83
adamc@9 84 withtype exp = exp' located
adamc@9 85
adamc@31 86 datatype sgn_item' =
adamc@31 87 SgiConAbs of string * int * kind
adamc@31 88 | SgiCon of string * int * kind * con
adamc@31 89 | SgiVal of string * int * con
adamc@31 90 | SgiStr of string * int * sgn
adamc@59 91 | SgiSgn of string * int * sgn
adamc@31 92
adamc@31 93 and sgn' =
adamc@31 94 SgnConst of sgn_item list
adamc@31 95 | SgnVar of int
adamc@41 96 | SgnFun of string * int * sgn * sgn
adamc@42 97 | SgnWhere of sgn * string * con
adamc@59 98 | SgnProj of int * string list * string
adamc@31 99 | SgnError
adamc@31 100
adamc@31 101 withtype sgn_item = sgn_item' located
adamc@31 102 and sgn = sgn' located
adamc@31 103
adamc@2 104 datatype decl' =
adamc@5 105 DCon of string * int * kind * con
adamc@9 106 | DVal of string * int * con * exp
adamc@31 107 | DSgn of string * int * sgn
adamc@31 108 | DStr of string * int * sgn * str
adamc@48 109 | DFfiStr of string * int * sgn
adamc@31 110
adamc@31 111 and str' =
adamc@31 112 StrConst of decl list
adamc@31 113 | StrVar of int
adamc@34 114 | StrProj of str * string
adamc@41 115 | StrFun of string * int * sgn * sgn * str
adamc@44 116 | StrApp of str * str
adamc@31 117 | StrError
adamc@2 118
adamc@2 119 withtype decl = decl' located
adamc@31 120 and str = str' located
adamc@31 121
adamc@2 122 type file = decl list
adamc@2 123
adamc@2 124 end