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Proper hiding of shadowed bindings in principal signatures
author Adam Chlipala <adamc@hcoop.net>
date Thu, 26 Jun 2008 08:54:49 -0400
parents 0a5c312de09a
children c1e21ab42896
rev   line source
adamc@38 1 (* Copyright (c) 2008, Adam Chlipala
adamc@38 2 * All rights reserved.
adamc@38 3 *
adamc@38 4 * Redistribution and use in source and binary forms, with or without
adamc@38 5 * modification, are permitted provided that the following conditions are met:
adamc@38 6 *
adamc@38 7 * - Redistributions of source code must retain the above copyright notice,
adamc@38 8 * this list of conditions and the following disclaimer.
adamc@38 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@38 10 * this list of conditions and the following disclaimer in the documentation
adamc@38 11 * and/or other materials provided with the distribution.
adamc@38 12 * - The names of contributors may not be used to endorse or promote products
adamc@38 13 * derived from this software without specific prior written permission.
adamc@38 14 *
adamc@38 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@38 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@38 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@38 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@38 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@38 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@38 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@38 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@38 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@38 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@38 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@38 26 *)
adamc@38 27
adamc@38 28 (* Pretty-printing elaborated Laconic/Web *)
adamc@38 29
adamc@38 30 structure ExplPrint :> EXPL_PRINT = struct
adamc@38 31
adamc@38 32 open Print.PD
adamc@38 33 open Print
adamc@38 34
adamc@38 35 open Expl
adamc@38 36
adamc@38 37 structure E = ExplEnv
adamc@38 38
adamc@38 39 val debug = ref false
adamc@38 40
adamc@38 41 fun p_kind' par (k, _) =
adamc@38 42 case k of
adamc@38 43 KType => string "Type"
adamc@38 44 | KArrow (k1, k2) => parenIf par (box [p_kind' true k1,
adamc@38 45 space,
adamc@38 46 string "->",
adamc@38 47 space,
adamc@38 48 p_kind k2])
adamc@38 49 | KName => string "Name"
adamc@38 50 | KRecord k => box [string "{", p_kind k, string "}"]
adamc@38 51
adamc@38 52 and p_kind k = p_kind' false k
adamc@38 53
adamc@38 54 fun p_con' par env (c, _) =
adamc@38 55 case c of
adamc@38 56 TFun (t1, t2) => parenIf par (box [p_con' true env t1,
adamc@38 57 space,
adamc@38 58 string "->",
adamc@38 59 space,
adamc@38 60 p_con env t2])
adamc@38 61 | TCFun (x, k, c) => parenIf par (box [string x,
adamc@38 62 space,
adamc@38 63 string "::",
adamc@38 64 space,
adamc@38 65 p_kind k,
adamc@38 66 space,
adamc@38 67 string "->",
adamc@38 68 space,
adamc@38 69 p_con (E.pushCRel env x k) c])
adamc@38 70 | TRecord (CRecord (_, xcs), _) => box [string "{",
adamc@38 71 p_list (fn (x, c) =>
adamc@38 72 box [p_name env x,
adamc@38 73 space,
adamc@38 74 string ":",
adamc@38 75 space,
adamc@38 76 p_con env c]) xcs,
adamc@38 77 string "}"]
adamc@38 78 | TRecord c => box [string "$",
adamc@38 79 p_con' true env c]
adamc@38 80
adamc@38 81 | CRel n =>
adamc@38 82 if !debug then
adamc@38 83 string (#1 (E.lookupCRel env n) ^ "_" ^ Int.toString n)
adamc@38 84 else
adamc@38 85 string (#1 (E.lookupCRel env n))
adamc@38 86 | CNamed n =>
adamc@38 87 ((if !debug then
adamc@38 88 string (#1 (E.lookupCNamed env n) ^ "__" ^ Int.toString n)
adamc@38 89 else
adamc@38 90 string (#1 (E.lookupCNamed env n)))
adamc@38 91 handle E.UnboundNamed _ => string ("UNBOUND_NAMED" ^ Int.toString n))
adamc@38 92 | CModProj (m1, ms, x) =>
adamc@38 93 let
adamc@38 94 val (m1x, sgn) = E.lookupStrNamed env m1
adamc@38 95
adamc@38 96 val m1s = if !debug then
adamc@38 97 m1x ^ "__" ^ Int.toString m1
adamc@38 98 else
adamc@38 99 m1x
adamc@38 100 in
adamc@38 101 p_list_sep (string ".") string (m1x :: ms @ [x])
adamc@38 102 end
adamc@38 103
adamc@38 104 | CApp (c1, c2) => parenIf par (box [p_con env c1,
adamc@38 105 space,
adamc@38 106 p_con' true env c2])
adamc@38 107 | CAbs (x, k, c) => parenIf par (box [string "fn",
adamc@38 108 space,
adamc@38 109 string x,
adamc@38 110 space,
adamc@38 111 string "::",
adamc@38 112 space,
adamc@38 113 p_kind k,
adamc@38 114 space,
adamc@38 115 string "=>",
adamc@38 116 space,
adamc@38 117 p_con (E.pushCRel env x k) c])
adamc@38 118
adamc@38 119 | CName s => box [string "#", string s]
adamc@38 120
adamc@38 121 | CRecord (k, xcs) =>
adamc@38 122 if !debug then
adamc@38 123 parenIf par (box [string "[",
adamc@38 124 p_list (fn (x, c) =>
adamc@38 125 box [p_con env x,
adamc@38 126 space,
adamc@38 127 string "=",
adamc@38 128 space,
adamc@38 129 p_con env c]) xcs,
adamc@38 130 string "]::",
adamc@38 131 p_kind k])
adamc@38 132 else
adamc@38 133 parenIf par (box [string "[",
adamc@38 134 p_list (fn (x, c) =>
adamc@38 135 box [p_con env x,
adamc@38 136 space,
adamc@38 137 string "=",
adamc@38 138 space,
adamc@38 139 p_con env c]) xcs,
adamc@38 140 string "]"])
adamc@38 141 | CConcat (c1, c2) => parenIf par (box [p_con' true env c1,
adamc@38 142 space,
adamc@38 143 string "++",
adamc@38 144 space,
adamc@38 145 p_con env c2])
adamc@38 146
adamc@38 147 and p_con env = p_con' false env
adamc@38 148
adamc@38 149 and p_name env (all as (c, _)) =
adamc@38 150 case c of
adamc@38 151 CName s => string s
adamc@38 152 | _ => p_con env all
adamc@38 153
adamc@38 154 fun p_exp' par env (e, _) =
adamc@38 155 case e of
adamc@38 156 EPrim p => Prim.p_t p
adamc@38 157 | ERel n =>
adamc@38 158 if !debug then
adamc@38 159 string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n)
adamc@38 160 else
adamc@38 161 string (#1 (E.lookupERel env n))
adamc@38 162 | ENamed n =>
adamc@38 163 if !debug then
adamc@38 164 string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n)
adamc@38 165 else
adamc@38 166 string (#1 (E.lookupENamed env n))
adamc@38 167 | EModProj (m1, ms, x) =>
adamc@38 168 let
adamc@38 169 val (m1x, sgn) = E.lookupStrNamed env m1
adamc@38 170
adamc@38 171 val m1s = if !debug then
adamc@38 172 m1x ^ "__" ^ Int.toString m1
adamc@38 173 else
adamc@38 174 m1x
adamc@38 175 in
adamc@38 176 p_list_sep (string ".") string (m1x :: ms @ [x])
adamc@38 177 end
adamc@38 178
adamc@38 179 | EApp (e1, e2) => parenIf par (box [p_exp env e1,
adamc@38 180 space,
adamc@38 181 p_exp' true env e2])
adamc@38 182 | EAbs (x, t, _, e) => parenIf par (box [string "fn",
adamc@38 183 space,
adamc@38 184 string x,
adamc@38 185 space,
adamc@38 186 string ":",
adamc@38 187 space,
adamc@38 188 p_con env t,
adamc@38 189 space,
adamc@38 190 string "=>",
adamc@38 191 space,
adamc@38 192 p_exp (E.pushERel env x t) e])
adamc@38 193 | ECApp (e, c) => parenIf par (box [p_exp env e,
adamc@38 194 space,
adamc@38 195 string "[",
adamc@38 196 p_con env c,
adamc@38 197 string "]"])
adamc@38 198 | ECAbs (x, k, e) => parenIf par (box [string "fn",
adamc@38 199 space,
adamc@38 200 string x,
adamc@38 201 space,
adamc@38 202 string "::",
adamc@38 203 space,
adamc@38 204 p_kind k,
adamc@38 205 space,
adamc@38 206 string "=>",
adamc@38 207 space,
adamc@38 208 p_exp (E.pushCRel env x k) e])
adamc@38 209
adamc@38 210 | ERecord xes => box [string "{",
adamc@38 211 p_list (fn (x, e, _) =>
adamc@38 212 box [p_name env x,
adamc@38 213 space,
adamc@38 214 string "=",
adamc@38 215 space,
adamc@38 216 p_exp env e]) xes,
adamc@38 217 string "}"]
adamc@38 218 | EField (e, c, {field, rest}) =>
adamc@38 219 if !debug then
adamc@38 220 box [p_exp' true env e,
adamc@38 221 string ".",
adamc@38 222 p_con' true env c,
adamc@38 223 space,
adamc@38 224 string "[",
adamc@38 225 p_con env field,
adamc@38 226 space,
adamc@38 227 string " in ",
adamc@38 228 space,
adamc@38 229 p_con env rest,
adamc@38 230 string "]"]
adamc@38 231 else
adamc@38 232 box [p_exp' true env e,
adamc@38 233 string ".",
adamc@38 234 p_con' true env c]
adamc@38 235
adamc@38 236 and p_exp env = p_exp' false env
adamc@38 237
adamc@38 238 fun p_named x n =
adamc@38 239 if !debug then
adamc@38 240 box [string x,
adamc@38 241 string "__",
adamc@38 242 string (Int.toString n)]
adamc@38 243 else
adamc@38 244 string x
adamc@38 245
adamc@38 246 fun p_sgn_item env (sgi, _) =
adamc@38 247 case sgi of
adamc@38 248 SgiConAbs (x, n, k) => box [string "con",
adamc@38 249 space,
adamc@38 250 p_named x n,
adamc@38 251 space,
adamc@38 252 string "::",
adamc@38 253 space,
adamc@38 254 p_kind k]
adamc@38 255 | SgiCon (x, n, k, c) => box [string "con",
adamc@38 256 space,
adamc@38 257 p_named x n,
adamc@38 258 space,
adamc@38 259 string "::",
adamc@38 260 space,
adamc@38 261 p_kind k,
adamc@38 262 space,
adamc@38 263 string "=",
adamc@38 264 space,
adamc@38 265 p_con env c]
adamc@38 266 | SgiVal (x, n, c) => box [string "val",
adamc@38 267 space,
adamc@38 268 p_named x n,
adamc@38 269 space,
adamc@38 270 string ":",
adamc@38 271 space,
adamc@38 272 p_con env c]
adamc@38 273 | SgiStr (x, n, sgn) => box [string "structure",
adamc@38 274 space,
adamc@38 275 p_named x n,
adamc@38 276 space,
adamc@38 277 string ":",
adamc@38 278 space,
adamc@38 279 p_sgn env sgn]
adamc@64 280 | SgiSgn (x, n, sgn) => box [string "signature",
adamc@64 281 space,
adamc@64 282 p_named x n,
adamc@64 283 space,
adamc@64 284 string "=",
adamc@64 285 space,
adamc@64 286 p_sgn env sgn]
adamc@38 287
adamc@38 288 and p_sgn env (sgn, _) =
adamc@38 289 case sgn of
adamc@38 290 SgnConst sgis => box [string "sig",
adamc@38 291 newline,
adamc@38 292 let
adamc@38 293 val (psgis, _) = ListUtil.foldlMap (fn (sgi, env) =>
adamc@38 294 (p_sgn_item env sgi,
adamc@38 295 E.sgiBinds env sgi))
adamc@38 296 env sgis
adamc@38 297 in
adamc@38 298 p_list_sep newline (fn x => x) psgis
adamc@38 299 end,
adamc@38 300 newline,
adamc@38 301 string "end"]
adamc@38 302 | SgnVar n => string (#1 (E.lookupSgnNamed env n))
adamc@45 303 | SgnFun (x, n, sgn, sgn') => box [string "functor",
adamc@45 304 space,
adamc@45 305 string "(",
adamc@45 306 string x,
adamc@45 307 space,
adamc@45 308 string ":",
adamc@45 309 space,
adamc@45 310 p_sgn env sgn,
adamc@45 311 string ")",
adamc@45 312 space,
adamc@45 313 string ":",
adamc@45 314 space,
adamc@45 315 p_sgn (E.pushStrNamed env x n sgn) sgn']
adamc@45 316 | SgnWhere (sgn, x, c) => box [p_sgn env sgn,
adamc@45 317 space,
adamc@45 318 string "where",
adamc@45 319 space,
adamc@45 320 string "con",
adamc@45 321 space,
adamc@45 322 string x,
adamc@45 323 space,
adamc@45 324 string "=",
adamc@45 325 space,
adamc@45 326 p_con env c]
adamc@64 327 | SgnProj (m1, ms, x) =>
adamc@64 328 let
adamc@64 329 val (m1x, sgn) = E.lookupStrNamed env m1
adamc@64 330
adamc@64 331 val m1s = if !debug then
adamc@64 332 m1x ^ "__" ^ Int.toString m1
adamc@64 333 else
adamc@64 334 m1x
adamc@64 335 in
adamc@64 336 p_list_sep (string ".") string (m1x :: ms @ [x])
adamc@64 337 end
adamc@38 338
adamc@38 339 fun p_decl env ((d, _) : decl) =
adamc@38 340 case d of
adamc@38 341 DCon (x, n, k, c) => box [string "con",
adamc@38 342 space,
adamc@38 343 p_named x n,
adamc@38 344 space,
adamc@38 345 string "::",
adamc@38 346 space,
adamc@38 347 p_kind k,
adamc@38 348 space,
adamc@38 349 string "=",
adamc@38 350 space,
adamc@38 351 p_con env c]
adamc@38 352 | DVal (x, n, t, e) => box [string "val",
adamc@38 353 space,
adamc@38 354 p_named x n,
adamc@38 355 space,
adamc@38 356 string ":",
adamc@38 357 space,
adamc@38 358 p_con env t,
adamc@38 359 space,
adamc@38 360 string "=",
adamc@38 361 space,
adamc@38 362 p_exp env e]
adamc@38 363
adamc@38 364 | DSgn (x, n, sgn) => box [string "signature",
adamc@38 365 space,
adamc@38 366 p_named x n,
adamc@38 367 space,
adamc@38 368 string "=",
adamc@38 369 space,
adamc@38 370 p_sgn env sgn]
adamc@38 371 | DStr (x, n, sgn, str) => box [string "structure",
adamc@38 372 space,
adamc@38 373 p_named x n,
adamc@38 374 space,
adamc@38 375 string ":",
adamc@38 376 space,
adamc@38 377 p_sgn env sgn,
adamc@38 378 space,
adamc@38 379 string "=",
adamc@38 380 space,
adamc@38 381 p_str env str]
adamc@48 382 | DFfiStr (x, n, sgn) => box [string "extern",
adamc@48 383 space,
adamc@48 384 string "structure",
adamc@48 385 space,
adamc@48 386 p_named x n,
adamc@48 387 space,
adamc@48 388 string ":",
adamc@48 389 space,
adamc@48 390 p_sgn env sgn]
adamc@38 391
adamc@38 392 and p_str env (str, _) =
adamc@38 393 case str of
adamc@38 394 StrConst ds => box [string "struct",
adamc@38 395 newline,
adamc@38 396 p_file env ds,
adamc@38 397 newline,
adamc@38 398 string "end"]
adamc@38 399 | StrVar n => string (#1 (E.lookupStrNamed env n))
adamc@38 400 | StrProj (str, s) => box [p_str env str,
adamc@38 401 string ".",
adamc@38 402 string s]
adamc@45 403 | StrFun (x, n, sgn, sgn', str) =>
adamc@45 404 let
adamc@45 405 val env' = E.pushStrNamed env x n sgn
adamc@45 406 in
adamc@45 407 box [string "functor",
adamc@45 408 space,
adamc@45 409 string "(",
adamc@45 410 string x,
adamc@45 411 space,
adamc@45 412 string ":",
adamc@45 413 space,
adamc@45 414 p_sgn env sgn,
adamc@45 415 string ")",
adamc@45 416 space,
adamc@45 417 string ":",
adamc@45 418 space,
adamc@45 419 p_sgn env' sgn',
adamc@45 420 space,
adamc@45 421 string "=>",
adamc@45 422 space,
adamc@45 423 p_str env' str]
adamc@45 424 end
adamc@45 425 | StrApp (str1, str2) => box [p_str env str1,
adamc@45 426 string "(",
adamc@45 427 p_str env str2,
adamc@45 428 string ")"]
adamc@38 429
adamc@38 430 and p_file env file =
adamc@38 431 let
adamc@38 432 val (pds, _) = ListUtil.foldlMap (fn (d, env) =>
adamc@38 433 (p_decl env d,
adamc@38 434 E.declBinds env d))
adamc@38 435 env file
adamc@38 436 in
adamc@38 437 p_list_sep newline (fn x => x) pds
adamc@38 438 end
adamc@38 439
adamc@38 440 end