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annotate src/elab_print.sml @ 12:d89477f07c1e

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Fun with records
author Adam Chlipala <adamc@hcoop.net>
date Fri, 28 Mar 2008 17:34:57 -0400
parents e97c6d335869
children 6049e2193bf2
rev   line source
adamc@3 1 (* Copyright (c) 2008, Adam Chlipala
adamc@3 2 * All rights reserved.
adamc@3 3 *
adamc@3 4 * Redistribution and use in source and binary forms, with or without
adamc@3 5 * modification, are permitted provided that the following conditions are met:
adamc@3 6 *
adamc@3 7 * - Redistributions of source code must retain the above copyright notice,
adamc@3 8 * this list of conditions and the following disclaimer.
adamc@3 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@3 10 * this list of conditions and the following disclaimer in the documentation
adamc@3 11 * and/or other materials provided with the distribution.
adamc@3 12 * - The names of contributors may not be used to endorse or promote products
adamc@3 13 * derived from this software without specific prior written permission.
adamc@3 14 *
adamc@3 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@3 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@3 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@3 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@3 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@3 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@3 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@3 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@3 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@3 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@3 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@3 26 *)
adamc@3 27
adamc@3 28 (* Pretty-printing elaborated Laconic/Web *)
adamc@3 29
adamc@3 30 structure ElabPrint :> ELAB_PRINT = struct
adamc@3 31
adamc@3 32 open Print.PD
adamc@3 33 open Print
adamc@3 34
adamc@3 35 open Elab
adamc@3 36
adamc@3 37 structure E = ElabEnv
adamc@3 38
adamc@11 39 val debug = ref false
adamc@11 40
adamc@3 41 fun p_kind' par (k, _) =
adamc@3 42 case k of
adamc@3 43 KType => string "Type"
adamc@3 44 | KArrow (k1, k2) => parenIf par (box [p_kind' true k1,
adamc@3 45 space,
adamc@3 46 string "->",
adamc@3 47 space,
adamc@3 48 p_kind k2])
adamc@3 49 | KName => string "Name"
adamc@3 50 | KRecord k => box [string "{", p_kind k, string "}"]
adamc@3 51
adamc@3 52 | KError => string "<ERROR>"
adamc@3 53 | KUnif (_, ref (SOME k)) => p_kind' par k
adamc@3 54 | KUnif (s, _) => string ("<UNIF:" ^ s ^ ">")
adamc@3 55
adamc@3 56 and p_kind k = p_kind' false k
adamc@3 57
adamc@3 58 fun p_explicitness e =
adamc@3 59 case e of
adamc@3 60 Explicit => string "::"
adamc@3 61 | Implicit => string ":::"
adamc@3 62
adamc@3 63 fun p_con' par env (c, _) =
adamc@3 64 case c of
adamc@3 65 TFun (t1, t2) => parenIf par (box [p_con' true env t1,
adamc@3 66 space,
adamc@3 67 string "->",
adamc@3 68 space,
adamc@3 69 p_con env t2])
adamc@3 70 | TCFun (e, x, k, c) => parenIf par (box [string x,
adamc@3 71 space,
adamc@3 72 p_explicitness e,
adamc@3 73 space,
adamc@3 74 p_kind k,
adamc@3 75 space,
adamc@3 76 string "->",
adamc@3 77 space,
adamc@3 78 p_con (E.pushCRel env x k) c])
adamc@3 79 | TRecord (CRecord (_, xcs), _) => box [string "{",
adamc@3 80 p_list (fn (x, c) =>
adamc@3 81 box [p_con env x,
adamc@3 82 space,
adamc@3 83 string ":",
adamc@3 84 space,
adamc@3 85 p_con env c]) xcs,
adamc@3 86 string "}"]
adamc@3 87 | TRecord c => box [string "$",
adamc@3 88 p_con' true env c]
adamc@3 89
adamc@11 90 | CRel n =>
adamc@11 91 if !debug then
adamc@11 92 string (#1 (E.lookupCRel env n) ^ "_" ^ Int.toString n)
adamc@11 93 else
adamc@11 94 string (#1 (E.lookupCRel env n))
adamc@11 95 | CNamed n =>
adamc@11 96 if !debug then
adamc@11 97 string (#1 (E.lookupCNamed env n) ^ "__" ^ Int.toString n)
adamc@11 98 else
adamc@11 99 string (#1 (E.lookupCNamed env n))
adamc@3 100
adamc@3 101 | CApp (c1, c2) => parenIf par (box [p_con env c1,
adamc@3 102 space,
adamc@3 103 p_con' true env c2])
adamc@8 104 | CAbs (x, k, c) => parenIf par (box [string "fn",
adamc@8 105 space,
adamc@8 106 string x,
adamc@8 107 space,
adamc@8 108 string "::",
adamc@8 109 space,
adamc@8 110 p_kind k,
adamc@8 111 space,
adamc@8 112 string "=>",
adamc@8 113 space,
adamc@8 114 p_con (E.pushCRel env x k) c])
adamc@3 115
adamc@3 116 | CName s => box [string "#", string s]
adamc@3 117
adamc@12 118 | CRecord (k, xcs) =>
adamc@12 119 if !debug then
adamc@12 120 parenIf par (box [string "[",
adamc@12 121 p_list (fn (x, c) =>
adamc@12 122 box [p_con env x,
adamc@12 123 space,
adamc@12 124 string "=",
adamc@12 125 space,
adamc@12 126 p_con env c]) xcs,
adamc@12 127 string "]::",
adamc@12 128 p_kind k])
adamc@12 129 else
adamc@12 130 parenIf par (box [string "[",
adamc@12 131 p_list (fn (x, c) =>
adamc@12 132 box [p_con env x,
adamc@12 133 space,
adamc@12 134 string "=",
adamc@12 135 space,
adamc@12 136 p_con env c]) xcs,
adamc@12 137 string "]"])
adamc@3 138 | CConcat (c1, c2) => parenIf par (box [p_con' true env c1,
adamc@3 139 space,
adamc@3 140 string "++",
adamc@3 141 space,
adamc@3 142 p_con env c2])
adamc@3 143
adamc@3 144 | CError => string "<ERROR>"
adamc@6 145 | CUnif (_, _, ref (SOME c)) => p_con' par env c
adamc@6 146 | CUnif (k, s, _) => box [string ("<UNIF:" ^ s ^ "::"),
adamc@6 147 p_kind k,
adamc@6 148 string ">"]
adamc@3 149
adamc@3 150 and p_con env = p_con' false env
adamc@3 151
adamc@9 152 fun p_exp' par env (e, _) =
adamc@9 153 case e of
adamc@11 154 ERel n =>
adamc@11 155 if !debug then
adamc@11 156 string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n)
adamc@11 157 else
adamc@11 158 string (#1 (E.lookupERel env n))
adamc@11 159 | ENamed n =>
adamc@11 160 if !debug then
adamc@11 161 string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n)
adamc@11 162 else
adamc@11 163 string (#1 (E.lookupENamed env n))
adamc@9 164 | EApp (e1, e2) => parenIf par (box [p_exp env e1,
adamc@9 165 space,
adamc@9 166 p_exp' true env e2])
adamc@9 167 | EAbs (x, t, e) => parenIf par (box [string "fn",
adamc@9 168 space,
adamc@9 169 string x,
adamc@9 170 space,
adamc@9 171 string ":",
adamc@9 172 space,
adamc@9 173 p_con env t,
adamc@9 174 space,
adamc@9 175 string "=>",
adamc@9 176 space,
adamc@9 177 p_exp (E.pushERel env x t) e])
adamc@9 178 | ECApp (e, c) => parenIf par (box [p_exp env e,
adamc@9 179 space,
adamc@9 180 string "[",
adamc@9 181 p_con env c,
adamc@9 182 string "]"])
adamc@9 183 | ECAbs (exp, x, k, e) => parenIf par (box [string "fn",
adamc@9 184 space,
adamc@9 185 string x,
adamc@9 186 space,
adamc@9 187 p_explicitness exp,
adamc@9 188 space,
adamc@9 189 p_kind k,
adamc@9 190 space,
adamc@9 191 string "=>",
adamc@9 192 space,
adamc@9 193 p_exp (E.pushCRel env x k) e])
adamc@9 194
adamc@12 195 | ERecord xes => box [string "{",
adamc@12 196 p_list (fn (x, e) =>
adamc@12 197 box [p_con env x,
adamc@12 198 space,
adamc@12 199 string "=",
adamc@12 200 space,
adamc@12 201 p_exp env e]) xes,
adamc@12 202 string "}"]
adamc@12 203 | EField (e, c, {field, rest}) =>
adamc@12 204 if !debug then
adamc@12 205 box [p_exp' true env e,
adamc@12 206 string ".",
adamc@12 207 p_con' true env c,
adamc@12 208 space,
adamc@12 209 string "[",
adamc@12 210 p_con env field,
adamc@12 211 space,
adamc@12 212 string " in ",
adamc@12 213 space,
adamc@12 214 p_con env rest,
adamc@12 215 string "]"]
adamc@12 216 else
adamc@12 217 box [p_exp' true env e,
adamc@12 218 string ".",
adamc@12 219 p_con' true env c]
adamc@12 220
adamc@9 221 | EError => string "<ERROR>"
adamc@9 222
adamc@9 223 and p_exp env = p_exp' false env
adamc@9 224
adamc@3 225 fun p_decl env ((d, _) : decl) =
adamc@3 226 case d of
adamc@11 227 DCon (x, n, k, c) =>
adamc@11 228 let
adamc@11 229 val xp = if !debug then
adamc@11 230 box [string x,
adamc@11 231 string "__",
adamc@11 232 string (Int.toString n)]
adamc@11 233 else
adamc@11 234 string x
adamc@11 235 in
adamc@11 236 box [string "con",
adamc@11 237 space,
adamc@11 238 xp,
adamc@11 239 space,
adamc@11 240 string "::",
adamc@11 241 space,
adamc@11 242 p_kind k,
adamc@11 243 space,
adamc@11 244 string "=",
adamc@11 245 space,
adamc@11 246 p_con env c]
adamc@11 247 end
adamc@11 248 | DVal (x, n, t, e) =>
adamc@11 249 let
adamc@11 250 val xp = if !debug then
adamc@11 251 box [string x,
adamc@11 252 string "__",
adamc@11 253 string (Int.toString n)]
adamc@11 254 else
adamc@11 255 string x
adamc@11 256 in
adamc@11 257 box [string "val",
adamc@11 258 space,
adamc@11 259 xp,
adamc@11 260 space,
adamc@11 261 string ":",
adamc@11 262 space,
adamc@11 263 p_con env t,
adamc@11 264 space,
adamc@11 265 string "=",
adamc@11 266 space,
adamc@11 267 p_exp env e]
adamc@11 268 end
adamc@3 269
adamc@3 270 fun p_file env file =
adamc@3 271 let
adamc@5 272 val (_, pds) = ListUtil.mapfoldl (fn (d, env) =>
adamc@5 273 (ElabUtil.declBinds env d,
adamc@5 274 p_decl env d))
adamc@5 275 env file
adamc@3 276 in
adamc@3 277 p_list_sep newline (fn x => x) pds
adamc@3 278 end
adamc@3 279
adamc@3 280 end