Mercurial > urweb

annotate src/mono_print.sml @ 407:345fcf91c806

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Rec demo
author Adam Chlipala <adamc@hcoop.net>
date Tue, 21 Oct 2008 17:34:20 -0400
parents 7abb28e9d51f
children bb27c7efcd90
rev   line source
adamc@25 1 (* Copyright (c) 2008, Adam Chlipala
adamc@25 2 * All rights reserved.
adamc@25 3 *
adamc@25 4 * Redistribution and use in source and binary forms, with or without
adamc@25 5 * modification, are permitted provided that the following conditions are met:
adamc@25 6 *
adamc@25 7 * - Redistributions of source code must retain the above copyright notice,
adamc@25 8 * this list of conditions and the following disclaimer.
adamc@25 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@25 10 * this list of conditions and the following disclaimer in the documentation
adamc@25 11 * and/or other materials provided with the distribution.
adamc@25 12 * - The names of contributors may not be used to endorse or promote products
adamc@25 13 * derived from this software without specific prior written permission.
adamc@25 14 *
adamc@25 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@25 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@25 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@25 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@25 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@25 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@25 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@25 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@25 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@25 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@25 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@25 26 *)
adamc@25 27
adamc@244 28 (* Pretty-printing monomorphic Ur/Web *)
adamc@25 29
adamc@25 30 structure MonoPrint :> MONO_PRINT = struct
adamc@25 31
adamc@25 32 open Print.PD
adamc@25 33 open Print
adamc@25 34
adamc@25 35 open Mono
adamc@25 36
adamc@25 37 structure E = MonoEnv
adamc@25 38
adamc@25 39 val debug = ref false
adamc@25 40
adamc@252 41 val dummyt = (TRecord [], ErrorMsg.dummySpan)
adamc@252 42
adamc@25 43 fun p_typ' par env (t, _) =
adamc@25 44 case t of
adamc@25 45 TFun (t1, t2) => parenIf par (box [p_typ' true env t1,
adamc@25 46 space,
adamc@25 47 string "->",
adamc@25 48 space,
adamc@25 49 p_typ env t2])
adamc@25 50 | TRecord xcs => box [string "{",
adamc@25 51 p_list (fn (x, t) =>
adamc@25 52 box [string x,
adamc@25 53 space,
adamc@25 54 string ":",
adamc@25 55 space,
adamc@25 56 p_typ env t]) xcs,
adamc@25 57 string "}"]
adamc@196 58 | TDatatype (n, _) =>
adamc@178 59 ((if !debug then
adamc@178 60 string (#1 (E.lookupDatatype env n) ^ "__" ^ Int.toString n)
adamc@178 61 else
adamc@178 62 string (#1 (E.lookupDatatype env n)))
adamc@178 63 handle E.UnboundNamed _ => string ("UNBOUND_DATATYPE_" ^ Int.toString n))
adamc@51 64 | TFfi (m, x) => box [string "FFI(", string m, string ".", string x, string ")"]
adamc@292 65 | TOption t => box [string "option(",
adamc@292 66 p_typ env t,
adamc@292 67 string ")"]
adamc@25 68
adamc@25 69 and p_typ env = p_typ' false env
adamc@25 70
adamc@109 71 fun p_enamed env n =
adamc@178 72 (if !debug then
adamc@178 73 string (#1 (E.lookupENamed env n) ^ "__" ^ Int.toString n)
adamc@178 74 else
adamc@178 75 string (#1 (E.lookupENamed env n)))
adamc@178 76 handle E.UnboundNamed _ => string ("UNBOUNDN_" ^ Int.toString n)
adamc@178 77
adamc@178 78 fun p_con_named env n =
adamc@178 79 (if !debug then
adamc@178 80 string (#1 (E.lookupConstructor env n) ^ "__" ^ Int.toString n)
adamc@178 81 else
adamc@178 82 string (#1 (E.lookupConstructor env n)))
adamc@178 83 handle E.UnboundNamed _ => string ("CONSTRUCTOR_" ^ Int.toString n)
adamc@178 84
adamc@178 85 fun p_patCon env pc =
adamc@178 86 case pc of
adamc@178 87 PConVar n => p_con_named env n
adamc@186 88 | PConFfi {mod = m, con, ...} => box [string "FFIC(",
adamc@185 89 string m,
adamc@185 90 string ".",
adamc@185 91 string con,
adamc@185 92 string ")"]
adamc@178 93
adamc@178 94 fun p_pat' par env (p, _) =
adamc@178 95 case p of
adamc@178 96 PWild => string "_"
adamc@182 97 | PVar (s, _) => string s
adamc@178 98 | PPrim p => Prim.p_t p
adamc@188 99 | PCon (_, n, NONE) => p_patCon env n
adamc@188 100 | PCon (_, n, SOME p) => parenIf par (box [p_patCon env n,
adamc@288 101 space,
adamc@288 102 p_pat' true env p])
adamc@178 103 | PRecord xps =>
adamc@178 104 box [string "{",
adamc@182 105 p_list_sep (box [string ",", space]) (fn (x, p, _) =>
adamc@178 106 box [string x,
adamc@178 107 space,
adamc@178 108 string "=",
adamc@178 109 space,
adamc@178 110 p_pat env p]) xps,
adamc@178 111 string "}"]
adamc@288 112 | PNone _ => string "None"
adamc@288 113 | PSome (_, p) => box [string "Some",
adamc@288 114 space,
adamc@288 115 p_pat' true env p]
adamc@178 116
adamc@178 117 and p_pat x = p_pat' false x
adamc@109 118
adamc@25 119 fun p_exp' par env (e, _) =
adamc@25 120 case e of
adamc@25 121 EPrim p => Prim.p_t p
adamc@25 122 | ERel n =>
adamc@178 123 ((if !debug then
adamc@178 124 string (#1 (E.lookupERel env n) ^ "_" ^ Int.toString n)
adamc@178 125 else
adamc@178 126 string (#1 (E.lookupERel env n)))
adamc@178 127 handle E.UnboundRel _ => string ("UNBOUND_" ^ Int.toString n))
adamc@109 128 | ENamed n => p_enamed env n
adamc@188 129 | ECon (_, pc, NONE) => p_patCon env pc
adamc@188 130 | ECon (_, pc, SOME e) => parenIf par (box [p_patCon env pc,
adamc@188 131 space,
adamc@188 132 p_exp' true env e])
adamc@297 133 | ENone _ => string "None"
adamc@290 134 | ESome (_, e) => parenIf par (box [string "Some",
adamc@290 135 space,
adamc@290 136 p_exp' true env e])
adamc@109 137
adamc@51 138 | EFfi (m, x) => box [string "FFI(", string m, string ".", string x, string ")"]
adamc@51 139 | EFfiApp (m, x, es) => box [string "FFI(",
adamc@51 140 string m,
adamc@51 141 string ".",
adamc@51 142 string x,
adamc@51 143 string "(",
adamc@51 144 p_list (p_exp env) es,
adamc@51 145 string "))"]
adamc@25 146 | EApp (e1, e2) => parenIf par (box [p_exp env e1,
adamc@25 147 space,
adamc@25 148 p_exp' true env e2])
adamc@252 149 | EAbs (x, t, _, e) => parenIf true (box [string "fn",
adamc@252 150 space,
adamc@252 151 string x,
adamc@252 152 space,
adamc@252 153 string ":",
adamc@252 154 space,
adamc@252 155 p_typ env t,
adamc@252 156 space,
adamc@252 157 string "=>",
adamc@252 158 space,
adamc@252 159 p_exp (E.pushERel env x t NONE) e])
adamc@25 160
adamc@387 161 | EUnop (s, e) => parenIf true (box [string s,
adamc@387 162 space,
adamc@387 163 p_exp' true env e])
adamc@387 164 | EBinop (s, e1, e2) => parenIf true (box [p_exp' true env e1,
adamc@387 165 space,
adamc@387 166 string s,
adamc@387 167 space,
adamc@387 168 p_exp' true env e2])
adamc@387 169
adamc@25 170 | ERecord xes => box [string "{",
adamc@29 171 p_list (fn (x, e, _) =>
adamc@25 172 box [string x,
adamc@25 173 space,
adamc@25 174 string "=",
adamc@25 175 space,
adamc@25 176 p_exp env e]) xes,
adamc@25 177 string "}"]
adamc@25 178 | EField (e, x) =>
adamc@25 179 box [p_exp' true env e,
adamc@25 180 string ".",
adamc@25 181 string x]
adamc@25 182
adamc@252 183 | ECase (e, pes, _) => parenIf true (box [string "case",
adamc@252 184 space,
adamc@252 185 p_exp env e,
adamc@252 186 space,
adamc@252 187 string "of",
adamc@252 188 space,
adamc@252 189 p_list_sep (box [space, string "|", space])
adamc@252 190 (fn (p, e) => box [p_pat env p,
adamc@252 191 space,
adamc@252 192 string "=>",
adamc@252 193 space,
adamc@252 194 p_exp (E.patBinds env p) e]) pes])
adamc@94 195
adamc@283 196 | EError (e, t) => box [string "(error",
adamc@283 197 space,
adamc@283 198 p_exp env e,
adamc@283 199 space,
adamc@283 200 string ":",
adamc@283 201 space,
adamc@283 202 p_typ env t,
adamc@283 203 string ")"]
adamc@283 204
adamc@331 205 | EStrcat (e1, e2) => parenIf par (box [p_exp' true env e1,
adamc@331 206 space,
adamc@331 207 string "^",
adamc@331 208 space,
adamc@331 209 p_exp env e2])
adamc@94 210
adamc@102 211 | EWrite e => box [string "write(",
adamc@102 212 p_exp env e,
adamc@102 213 string ")"]
adamc@102 214
adamc@106 215 | ESeq (e1, e2) => box [p_exp env e1,
adamc@106 216 string ";",
adamc@106 217 space,
adamc@106 218 p_exp env e2]
adamc@252 219 | ELet (x, t, e1, e2) => box [string "(let",
adamc@251 220 space,
adamc@251 221 string x,
adamc@251 222 space,
adamc@251 223 string ":",
adamc@251 224 space,
adamc@251 225 p_typ env t,
adamc@251 226 space,
adamc@251 227 string "=",
adamc@251 228 space,
adamc@252 229 string "(",
adamc@251 230 p_exp env e1,
adamc@252 231 string ")",
adamc@251 232 space,
adamc@251 233 string "in",
adamc@251 234 space,
adamc@252 235 string "(",
adamc@252 236 p_exp (E.pushERel env x t NONE) e2,
adamc@252 237 string "))"]
adamc@106 238
adamc@111 239 | EClosure (n, es) => box [string "CLOSURE(",
adamc@111 240 p_enamed env n,
adamc@111 241 p_list_sep (string "") (fn e => box [string ", ",
adamc@111 242 p_exp env e]) es,
adamc@111 243 string ")"]
adamc@111 244
adamc@252 245 | EQuery {exps, tables, state, query, body, initial} =>
adamc@252 246 box [string "query[",
adamc@252 247 p_list (fn (x, t) => box [string x, space, string ":", space, p_typ env t]) exps,
adamc@252 248 string "] [",
adamc@252 249 p_list (fn (x, xts) => box [string x,
adamc@252 250 space,
adamc@252 251 string ":",
adamc@252 252 space,
adamc@252 253 string "{",
adamc@252 254 p_list (fn (x, t) => box [string x, space, string ":", space, p_typ env t]) xts,
adamc@252 255 string "}"]) tables,
adamc@252 256 string "] [",
adamc@252 257 p_typ env state,
adamc@252 258 string "]",
adamc@252 259 space,
adamc@252 260 p_exp env query,
adamc@252 261 space,
adamc@252 262 string "initial",
adamc@252 263 space,
adamc@252 264 p_exp env initial,
adamc@252 265 space,
adamc@252 266 string "in",
adamc@252 267 space,
adamc@252 268 p_exp (E.pushERel (E.pushERel env "r" dummyt NONE) "acc" dummyt NONE) body]
adamc@307 269 | EDml e => box [string "dml(",
adamc@307 270 p_exp env e,
adamc@307 271 string ")"]
adamc@338 272 | ENextval e => box [string "nextval(",
adamc@338 273 p_exp env e,
adamc@338 274 string ")"]
adamc@252 275
adamc@25 276 and p_exp env = p_exp' false env
adamc@25 277
adamc@126 278 fun p_vali env (x, n, t, e, s) =
adamc@126 279 let
adamc@126 280 val xp = if !debug then
adamc@126 281 box [string x,
adamc@126 282 string "__",
adamc@126 283 string (Int.toString n)]
adamc@126 284 else
adamc@126 285 string x
adamc@126 286 in
adamc@126 287 box [xp,
adamc@126 288 space,
adamc@126 289 string "as",
adamc@126 290 space,
adamc@126 291 string s,
adamc@126 292 space,
adamc@126 293 string ":",
adamc@126 294 space,
adamc@126 295 p_typ env t,
adamc@126 296 space,
adamc@126 297 string "=",
adamc@126 298 space,
adamc@126 299 p_exp env e]
adamc@126 300 end
adamc@126 301
adamc@164 302 fun p_datatype env (x, n, cons) =
adamc@164 303 let
adamc@168 304 val env = E.pushDatatype env x n cons
adamc@164 305 in
adamc@164 306 box [string "datatype",
adamc@164 307 space,
adamc@164 308 string x,
adamc@164 309 space,
adamc@164 310 string "=",
adamc@164 311 space,
adamc@164 312 p_list_sep (box [space, string "|", space])
adamc@164 313 (fn (x, n, NONE) => if !debug then (string (x ^ "__" ^ Int.toString n))
adamc@164 314 else string x
adamc@164 315 | (x, _, SOME t) => box [if !debug then (string (x ^ "__" ^ Int.toString n))
adamc@164 316 else string x, space, string "of", space, p_typ env t])
adamc@164 317 cons]
adamc@164 318 end
adamc@164 319
adamc@126 320 fun p_decl env (dAll as (d, _) : decl) =
adamc@25 321 case d of
adamc@164 322 DDatatype x => p_datatype env x
adamc@164 323 | DVal vi => box [string "val",
adamc@126 324 space,
adamc@126 325 p_vali env vi]
adamc@126 326 | DValRec vis =>
adamc@25 327 let
adamc@126 328 val env = E.declBinds env dAll
adamc@25 329 in
adamc@25 330 box [string "val",
adamc@25 331 space,
adamc@126 332 string "rec",
adamc@25 333 space,
adamc@126 334 p_list_sep (box [newline, string "and", space]) (p_vali env) vis]
adamc@25 335 end
adamc@109 336
adamc@144 337 | DExport (ek, s, n, ts) => box [string "export",
adamc@144 338 space,
adamc@144 339 CorePrint.p_export_kind ek,
adamc@144 340 space,
adamc@144 341 p_enamed env n,
adamc@144 342 space,
adamc@144 343 string "as",
adamc@144 344 space,
adamc@144 345 string s,
adamc@144 346 p_list_sep (string "") (fn t => box [space,
adamc@144 347 string "(",
adamc@144 348 p_typ env t,
adamc@144 349 string ")"]) ts]
adamc@271 350
adamc@273 351 | DTable (s, xts) => box [string "(* SQL table ",
adamc@273 352 string s,
adamc@273 353 space,
adamc@273 354 string ":",
adamc@273 355 space,
adamc@273 356 p_list (fn (x, t) => box [string x,
adamc@273 357 space,
adamc@273 358 string ":",
adamc@273 359 space,
adamc@273 360 p_typ env t]) xts,
adamc@273 361 space,
adamc@273 362 string "*)"]
adamc@338 363 | DSequence s => box [string "(* SQL sequence ",
adamc@338 364 string s,
adamc@338 365 string "*)"]
adamc@271 366 | DDatabase s => box [string "database",
adamc@271 367 space,
adamc@271 368 string s]
adamc@100 369
adamc@25 370 fun p_file env file =
adamc@25 371 let
adamc@31 372 val (pds, _) = ListUtil.foldlMap (fn (d, env) =>
adamc@31 373 (p_decl env d,
adamc@31 374 E.declBinds env d))
adamc@25 375 env file
adamc@25 376 in
adamc@25 377 p_list_sep newline (fn x => x) pds
adamc@25 378 end
adamc@25 379
adamc@25 380 end