| 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003 Free Software Foundation, Inc. |
| 2 | * |
| 3 | * This library is free software; you can redistribute it and/or |
| 4 | * modify it under the terms of the GNU Lesser General Public |
| 5 | * License as published by the Free Software Foundation; either |
| 6 | * version 2.1 of the License, or (at your option) any later version. |
| 7 | * |
| 8 | * This library is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * Lesser General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU Lesser General Public |
| 14 | * License along with this library; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 16 | */ |
| 17 | |
| 18 | |
| 19 | \f |
| 20 | |
| 21 | #include <errno.h> |
| 22 | |
| 23 | #include "libguile/_scm.h" |
| 24 | #include "libguile/chars.h" |
| 25 | #include "libguile/continuations.h" |
| 26 | #include "libguile/smob.h" |
| 27 | #include "libguile/eval.h" |
| 28 | #include "libguile/macros.h" |
| 29 | #include "libguile/procprop.h" |
| 30 | #include "libguile/read.h" |
| 31 | #include "libguile/weaks.h" |
| 32 | #include "libguile/unif.h" |
| 33 | #include "libguile/alist.h" |
| 34 | #include "libguile/struct.h" |
| 35 | #include "libguile/objects.h" |
| 36 | #include "libguile/ports.h" |
| 37 | #include "libguile/root.h" |
| 38 | #include "libguile/strings.h" |
| 39 | #include "libguile/strports.h" |
| 40 | #include "libguile/vectors.h" |
| 41 | #include "libguile/lang.h" |
| 42 | #include "libguile/numbers.h" |
| 43 | |
| 44 | #include "libguile/validate.h" |
| 45 | #include "libguile/print.h" |
| 46 | \f |
| 47 | |
| 48 | /* {Names of immediate symbols} |
| 49 | * |
| 50 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. |
| 51 | */ |
| 52 | |
| 53 | /* This table must agree with the list of flags in tags.h. */ |
| 54 | static const char *iflagnames[] = |
| 55 | { |
| 56 | "#f", |
| 57 | "#t", |
| 58 | "#<undefined>", |
| 59 | "#<eof>", |
| 60 | "()", |
| 61 | "#<unspecified>", |
| 62 | |
| 63 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ |
| 64 | "#<unbound>", |
| 65 | |
| 66 | /* Elisp nil value. This is its Scheme name; whenever it's printed in |
| 67 | * Elisp, it should appear as the symbol `nil'. */ |
| 68 | "#nil" |
| 69 | }; |
| 70 | |
| 71 | scm_t_option scm_print_opts[] = { |
| 72 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
| 73 | "Hook for printing closures (should handle macros as well)." }, |
| 74 | { SCM_OPTION_BOOLEAN, "source", 0, |
| 75 | "Print closures with source." } |
| 76 | }; |
| 77 | |
| 78 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
| 79 | (SCM setting), |
| 80 | "Option interface for the print options. Instead of using\n" |
| 81 | "this procedure directly, use the procedures\n" |
| 82 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" |
| 83 | "and @code{print-options}.") |
| 84 | #define FUNC_NAME s_scm_print_options |
| 85 | { |
| 86 | SCM ans = scm_options (setting, |
| 87 | scm_print_opts, |
| 88 | SCM_N_PRINT_OPTIONS, |
| 89 | FUNC_NAME); |
| 90 | return ans; |
| 91 | } |
| 92 | #undef FUNC_NAME |
| 93 | |
| 94 | \f |
| 95 | /* {Printing of Scheme Objects} |
| 96 | */ |
| 97 | |
| 98 | /* Detection of circular references. |
| 99 | * |
| 100 | * Due to other constraints in the implementation, this code has bad |
| 101 | * time complexity (O (depth * N)), The printer code can be |
| 102 | * rewritten to be O(N). |
| 103 | */ |
| 104 | #define PUSH_REF(pstate, obj) \ |
| 105 | do { \ |
| 106 | pstate->ref_stack[pstate->top++] = (obj); \ |
| 107 | if (pstate->top == pstate->ceiling) \ |
| 108 | grow_ref_stack (pstate); \ |
| 109 | } while(0) |
| 110 | |
| 111 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
| 112 | do { \ |
| 113 | register unsigned long i; \ |
| 114 | for (i = 0; i < pstate->top; ++i) \ |
| 115 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
| 116 | goto label; \ |
| 117 | if (pstate->fancyp) \ |
| 118 | { \ |
| 119 | if (pstate->top - pstate->list_offset >= pstate->level) \ |
| 120 | { \ |
| 121 | scm_putc ('#', port); \ |
| 122 | return; \ |
| 123 | } \ |
| 124 | } \ |
| 125 | PUSH_REF(pstate, obj); \ |
| 126 | } while(0) |
| 127 | |
| 128 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
| 129 | |
| 130 | SCM scm_print_state_vtable = SCM_BOOL_F; |
| 131 | static SCM print_state_pool = SCM_EOL; |
| 132 | SCM_MUTEX (print_state_mutex); |
| 133 | |
| 134 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
| 135 | |
| 136 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
| 137 | (), |
| 138 | "Return the current-pstate -- the car of the\n" |
| 139 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
| 140 | "included in @code{--enable-guile-debug} builds.") |
| 141 | #define FUNC_NAME s_scm_current_pstate |
| 142 | { |
| 143 | if (!SCM_NULLP (print_state_pool)) |
| 144 | return SCM_CAR (print_state_pool); |
| 145 | else |
| 146 | return SCM_BOOL_F; |
| 147 | } |
| 148 | #undef FUNC_NAME |
| 149 | |
| 150 | #endif |
| 151 | |
| 152 | #define PSTATE_SIZE 50L |
| 153 | |
| 154 | static SCM |
| 155 | make_print_state (void) |
| 156 | { |
| 157 | SCM print_state |
| 158 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); |
| 159 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
| 160 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
| 161 | pstate->ref_stack = SCM_WRITABLE_VELTS (pstate->ref_vect); |
| 162 | pstate->ceiling = SCM_VECTOR_LENGTH (pstate->ref_vect); |
| 163 | return print_state; |
| 164 | } |
| 165 | |
| 166 | SCM |
| 167 | scm_make_print_state () |
| 168 | { |
| 169 | SCM answer = SCM_BOOL_F; |
| 170 | |
| 171 | /* First try to allocate a print state from the pool */ |
| 172 | scm_i_plugin_mutex_lock (&print_state_mutex); |
| 173 | if (!SCM_NULLP (print_state_pool)) |
| 174 | { |
| 175 | answer = SCM_CAR (print_state_pool); |
| 176 | print_state_pool = SCM_CDR (print_state_pool); |
| 177 | } |
| 178 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
| 179 | |
| 180 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
| 181 | } |
| 182 | |
| 183 | void |
| 184 | scm_free_print_state (SCM print_state) |
| 185 | { |
| 186 | SCM handle; |
| 187 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
| 188 | /* Cleanup before returning print state to pool. |
| 189 | * It is better to do it here. Doing it in scm_prin1 |
| 190 | * would cost more since that function is called much more |
| 191 | * often. |
| 192 | */ |
| 193 | pstate->fancyp = 0; |
| 194 | pstate->revealed = 0; |
| 195 | scm_i_plugin_mutex_lock (&print_state_mutex); |
| 196 | handle = scm_cons (print_state, print_state_pool); |
| 197 | print_state_pool = handle; |
| 198 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
| 199 | } |
| 200 | |
| 201 | SCM |
| 202 | scm_i_port_with_print_state (SCM port, SCM print_state) |
| 203 | { |
| 204 | if (SCM_UNBNDP (print_state)) |
| 205 | { |
| 206 | if (SCM_PORT_WITH_PS_P (port)) |
| 207 | return port; |
| 208 | else |
| 209 | print_state = scm_make_print_state (); |
| 210 | /* port does not need to be coerced since it doesn't have ps */ |
| 211 | } |
| 212 | else |
| 213 | port = SCM_COERCE_OUTPORT (port); |
| 214 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, |
| 215 | SCM_UNPACK (scm_cons (port, print_state))); |
| 216 | } |
| 217 | |
| 218 | static void |
| 219 | grow_ref_stack (scm_print_state *pstate) |
| 220 | { |
| 221 | unsigned long int old_size = SCM_VECTOR_LENGTH (pstate->ref_vect); |
| 222 | SCM const *old_elts = SCM_VELTS (pstate->ref_vect); |
| 223 | unsigned long int new_size = 2 * pstate->ceiling; |
| 224 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
| 225 | unsigned long int i; |
| 226 | |
| 227 | for (i = 0; i != old_size; ++i) |
| 228 | SCM_VECTOR_SET (new_vect, i, old_elts [i]); |
| 229 | |
| 230 | pstate->ref_vect = new_vect; |
| 231 | pstate->ref_stack = SCM_WRITABLE_VELTS(new_vect); |
| 232 | pstate->ceiling = new_size; |
| 233 | } |
| 234 | |
| 235 | |
| 236 | static void |
| 237 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
| 238 | { |
| 239 | register long i; |
| 240 | long self = pstate->top - 1; |
| 241 | i = pstate->top - 1; |
| 242 | if (SCM_CONSP (pstate->ref_stack[i])) |
| 243 | { |
| 244 | while (i > 0) |
| 245 | { |
| 246 | if (!SCM_CONSP (pstate->ref_stack[i - 1]) |
| 247 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
| 248 | pstate->ref_stack[i])) |
| 249 | break; |
| 250 | --i; |
| 251 | } |
| 252 | self = i; |
| 253 | } |
| 254 | for (i = pstate->top - 1; 1; --i) |
| 255 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
| 256 | break; |
| 257 | scm_putc ('#', port); |
| 258 | scm_intprint (i - self, 10, port); |
| 259 | scm_putc ('#', port); |
| 260 | } |
| 261 | |
| 262 | /* Print the name of a symbol. */ |
| 263 | |
| 264 | void |
| 265 | scm_print_symbol_name (const char *str, size_t len, SCM port) |
| 266 | { |
| 267 | /* This points to the first character that has not yet been written to the |
| 268 | * port. */ |
| 269 | size_t pos = 0; |
| 270 | /* This points to the character we're currently looking at. */ |
| 271 | size_t end; |
| 272 | /* If the name contains weird characters, we'll escape them with |
| 273 | * backslashes and set this flag; it indicates that we should surround the |
| 274 | * name with "#{" and "}#". */ |
| 275 | int weird = 0; |
| 276 | /* Backslashes are not sufficient to make a name weird, but if a name is |
| 277 | * weird because of other characters, backslahes need to be escaped too. |
| 278 | * The first time we see a backslash, we set maybe_weird, and mw_pos points |
| 279 | * to the backslash. Then if the name turns out to be weird, we re-process |
| 280 | * everything starting from mw_pos. |
| 281 | * We could instead make backslashes always weird. This is not necessary |
| 282 | * to ensure that the output is (read)-able, but it would make this code |
| 283 | * simpler and faster. */ |
| 284 | int maybe_weird = 0; |
| 285 | size_t mw_pos = 0; |
| 286 | |
| 287 | if (len == 0 || str[0] == '\'' || str[0] == '`' || str[0] == ',' || |
| 288 | str[0] == ':' || str[len-1] == ':' || (str[0] == '.' && len == 1) || |
| 289 | !SCM_FALSEP (scm_i_mem2number(str, len, 10))) |
| 290 | { |
| 291 | scm_lfwrite ("#{", 2, port); |
| 292 | weird = 1; |
| 293 | } |
| 294 | |
| 295 | for (end = pos; end < len; ++end) |
| 296 | switch (str[end]) |
| 297 | { |
| 298 | #ifdef BRACKETS_AS_PARENS |
| 299 | case '[': |
| 300 | case ']': |
| 301 | #endif |
| 302 | case '(': |
| 303 | case ')': |
| 304 | case '"': |
| 305 | case ';': |
| 306 | case '#': |
| 307 | case SCM_WHITE_SPACES: |
| 308 | case SCM_LINE_INCREMENTORS: |
| 309 | weird_handler: |
| 310 | if (maybe_weird) |
| 311 | { |
| 312 | end = mw_pos; |
| 313 | maybe_weird = 0; |
| 314 | } |
| 315 | if (!weird) |
| 316 | { |
| 317 | scm_lfwrite ("#{", 2, port); |
| 318 | weird = 1; |
| 319 | } |
| 320 | if (pos < end) |
| 321 | scm_lfwrite (str + pos, end - pos, port); |
| 322 | { |
| 323 | char buf[2]; |
| 324 | buf[0] = '\\'; |
| 325 | buf[1] = str[end]; |
| 326 | scm_lfwrite (buf, 2, port); |
| 327 | } |
| 328 | pos = end + 1; |
| 329 | break; |
| 330 | case '\\': |
| 331 | if (weird) |
| 332 | goto weird_handler; |
| 333 | if (!maybe_weird) |
| 334 | { |
| 335 | maybe_weird = 1; |
| 336 | mw_pos = pos; |
| 337 | } |
| 338 | break; |
| 339 | default: |
| 340 | break; |
| 341 | } |
| 342 | if (pos < end) |
| 343 | scm_lfwrite (str + pos, end - pos, port); |
| 344 | if (weird) |
| 345 | scm_lfwrite ("}#", 2, port); |
| 346 | } |
| 347 | |
| 348 | /* Print generally. Handles both write and display according to PSTATE. |
| 349 | */ |
| 350 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
| 351 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); |
| 352 | |
| 353 | void |
| 354 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
| 355 | { |
| 356 | switch (SCM_ITAG3 (exp)) |
| 357 | { |
| 358 | case scm_tc3_closure: |
| 359 | case scm_tc3_tc7_1: |
| 360 | case scm_tc3_tc7_2: |
| 361 | /* These tc3 tags should never occur in an immediate value. They are |
| 362 | * only used in cell types of non-immediates, i. e. the value returned |
| 363 | * by SCM_CELL_TYPE (exp) can use these tags. |
| 364 | */ |
| 365 | scm_ipruk ("immediate", exp, port); |
| 366 | break; |
| 367 | case scm_tc3_int_1: |
| 368 | case scm_tc3_int_2: |
| 369 | scm_intprint (SCM_INUM (exp), 10, port); |
| 370 | break; |
| 371 | case scm_tc3_imm24: |
| 372 | if (SCM_CHARP (exp)) |
| 373 | { |
| 374 | long i = SCM_CHAR (exp); |
| 375 | |
| 376 | if (SCM_WRITINGP (pstate)) |
| 377 | { |
| 378 | scm_puts ("#\\", port); |
| 379 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) |
| 380 | scm_puts (scm_charnames[i], port); |
| 381 | #ifndef EBCDIC |
| 382 | else if (i == '\177') |
| 383 | scm_puts (scm_charnames[scm_n_charnames - 1], port); |
| 384 | #endif |
| 385 | else if (i < 0 || i > '\177') |
| 386 | scm_intprint (i, 8, port); |
| 387 | else |
| 388 | scm_putc (i, port); |
| 389 | } |
| 390 | else |
| 391 | scm_putc (i, port); |
| 392 | } |
| 393 | else if (SCM_IFLAGP (exp) |
| 394 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
| 395 | { |
| 396 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); |
| 397 | } |
| 398 | else if (SCM_ISYMP (exp)) |
| 399 | { |
| 400 | scm_i_print_isym (exp, port); |
| 401 | } |
| 402 | else if (SCM_ILOCP (exp)) |
| 403 | { |
| 404 | scm_i_print_iloc (exp, port); |
| 405 | } |
| 406 | else |
| 407 | { |
| 408 | /* unknown immediate value */ |
| 409 | scm_ipruk ("immediate", exp, port); |
| 410 | } |
| 411 | break; |
| 412 | case scm_tc3_cons: |
| 413 | switch (SCM_TYP7 (exp)) |
| 414 | { |
| 415 | case scm_tcs_struct: |
| 416 | { |
| 417 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 418 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) |
| 419 | { |
| 420 | SCM pwps, print = pstate->writingp ? g_write : g_display; |
| 421 | if (!print) |
| 422 | goto print_struct; |
| 423 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
| 424 | pstate->revealed = 1; |
| 425 | scm_call_generic_2 (print, exp, pwps); |
| 426 | } |
| 427 | else |
| 428 | { |
| 429 | print_struct: |
| 430 | scm_print_struct (exp, port, pstate); |
| 431 | } |
| 432 | EXIT_NESTED_DATA (pstate); |
| 433 | } |
| 434 | break; |
| 435 | case scm_tcs_cons_imcar: |
| 436 | case scm_tcs_cons_nimcar: |
| 437 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 438 | scm_iprlist ("(", exp, ')', port, pstate); |
| 439 | EXIT_NESTED_DATA (pstate); |
| 440 | break; |
| 441 | circref: |
| 442 | print_circref (port, pstate, exp); |
| 443 | break; |
| 444 | case scm_tcs_closures: |
| 445 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
| 446 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, |
| 447 | exp, port, pstate))) |
| 448 | { |
| 449 | SCM formals = SCM_CLOSURE_FORMALS (exp); |
| 450 | scm_puts ("#<procedure", port); |
| 451 | scm_putc (' ', port); |
| 452 | scm_iprin1 (scm_procedure_name (exp), port, pstate); |
| 453 | scm_putc (' ', port); |
| 454 | if (SCM_PRINT_SOURCE_P) |
| 455 | { |
| 456 | SCM env = SCM_ENV (exp); |
| 457 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); |
| 458 | SCM src = scm_i_unmemocopy_body (SCM_CODE (exp), xenv); |
| 459 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 460 | scm_iprin1 (src, port, pstate); |
| 461 | EXIT_NESTED_DATA (pstate); |
| 462 | } |
| 463 | else |
| 464 | scm_iprin1 (formals, port, pstate); |
| 465 | scm_putc ('>', port); |
| 466 | } |
| 467 | break; |
| 468 | case scm_tc7_number: |
| 469 | switch SCM_TYP16 (exp) { |
| 470 | case scm_tc16_big: |
| 471 | scm_bigprint (exp, port, pstate); |
| 472 | break; |
| 473 | case scm_tc16_real: |
| 474 | scm_print_real (exp, port, pstate); |
| 475 | break; |
| 476 | case scm_tc16_complex: |
| 477 | scm_print_complex (exp, port, pstate); |
| 478 | break; |
| 479 | case scm_tc16_fraction: |
| 480 | scm_i_print_fraction (exp, port, pstate); |
| 481 | break; |
| 482 | } |
| 483 | break; |
| 484 | case scm_tc7_string: |
| 485 | if (SCM_WRITINGP (pstate)) |
| 486 | { |
| 487 | size_t i; |
| 488 | |
| 489 | scm_putc ('"', port); |
| 490 | for (i = 0; i < SCM_STRING_LENGTH (exp); ++i) |
| 491 | { |
| 492 | unsigned char ch = SCM_STRING_CHARS (exp)[i]; |
| 493 | if ((ch < 32 && ch != '\n') || (127 <= ch && ch < 148)) |
| 494 | { |
| 495 | static char const hex[]="0123456789abcdef"; |
| 496 | scm_putc ('\\', port); |
| 497 | scm_putc ('x', port); |
| 498 | scm_putc (hex [ch / 16], port); |
| 499 | scm_putc (hex [ch % 16], port); |
| 500 | } |
| 501 | else |
| 502 | { |
| 503 | if (ch == '"' || ch == '\\') |
| 504 | scm_putc ('\\', port); |
| 505 | scm_putc (ch, port); |
| 506 | } |
| 507 | } |
| 508 | scm_putc ('"', port); |
| 509 | } |
| 510 | else |
| 511 | scm_lfwrite (SCM_STRING_CHARS (exp), SCM_STRING_LENGTH (exp), |
| 512 | port); |
| 513 | break; |
| 514 | case scm_tc7_symbol: |
| 515 | if (SCM_SYMBOL_INTERNED_P (exp)) |
| 516 | { |
| 517 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), |
| 518 | SCM_SYMBOL_LENGTH (exp), |
| 519 | port); |
| 520 | scm_remember_upto_here_1 (exp); |
| 521 | } |
| 522 | else |
| 523 | { |
| 524 | scm_puts ("#<uninterned-symbol ", port); |
| 525 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), |
| 526 | SCM_SYMBOL_LENGTH (exp), |
| 527 | port); |
| 528 | scm_putc (' ', port); |
| 529 | scm_intprint ((long)exp, 16, port); |
| 530 | scm_putc ('>', port); |
| 531 | } |
| 532 | break; |
| 533 | case scm_tc7_variable: |
| 534 | scm_i_variable_print (exp, port, pstate); |
| 535 | break; |
| 536 | case scm_tc7_wvect: |
| 537 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 538 | if (SCM_IS_WHVEC (exp)) |
| 539 | scm_puts ("#wh(", port); |
| 540 | else |
| 541 | scm_puts ("#w(", port); |
| 542 | goto common_vector_printer; |
| 543 | |
| 544 | case scm_tc7_vector: |
| 545 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 546 | scm_puts ("#(", port); |
| 547 | common_vector_printer: |
| 548 | { |
| 549 | register long i; |
| 550 | long last = SCM_VECTOR_LENGTH (exp) - 1; |
| 551 | int cutp = 0; |
| 552 | if (pstate->fancyp && SCM_VECTOR_LENGTH (exp) > pstate->length) |
| 553 | { |
| 554 | last = pstate->length - 1; |
| 555 | cutp = 1; |
| 556 | } |
| 557 | for (i = 0; i < last; ++i) |
| 558 | { |
| 559 | /* CHECK_INTS; */ |
| 560 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); |
| 561 | scm_putc (' ', port); |
| 562 | } |
| 563 | if (i == last) |
| 564 | { |
| 565 | /* CHECK_INTS; */ |
| 566 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); |
| 567 | } |
| 568 | if (cutp) |
| 569 | scm_puts (" ...", port); |
| 570 | scm_putc (')', port); |
| 571 | } |
| 572 | EXIT_NESTED_DATA (pstate); |
| 573 | break; |
| 574 | #if SCM_HAVE_ARRAYS |
| 575 | case scm_tc7_bvect: |
| 576 | case scm_tc7_byvect: |
| 577 | case scm_tc7_svect: |
| 578 | case scm_tc7_ivect: |
| 579 | case scm_tc7_uvect: |
| 580 | case scm_tc7_fvect: |
| 581 | case scm_tc7_dvect: |
| 582 | case scm_tc7_cvect: |
| 583 | #if SCM_SIZEOF_LONG_LONG != 0 |
| 584 | case scm_tc7_llvect: |
| 585 | #endif |
| 586 | scm_raprin1 (exp, port, pstate); |
| 587 | break; |
| 588 | #endif |
| 589 | case scm_tcs_subrs: |
| 590 | scm_puts (SCM_SUBR_GENERIC (exp) |
| 591 | ? "#<primitive-generic " |
| 592 | : "#<primitive-procedure ", |
| 593 | port); |
| 594 | scm_puts (SCM_SYMBOL_CHARS (SCM_SNAME (exp)), port); |
| 595 | scm_putc ('>', port); |
| 596 | break; |
| 597 | #ifdef CCLO |
| 598 | case scm_tc7_cclo: |
| 599 | { |
| 600 | SCM proc = SCM_CCLO_SUBR (exp); |
| 601 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
| 602 | { |
| 603 | /* Print gsubrs as primitives */ |
| 604 | SCM name = scm_procedure_name (exp); |
| 605 | scm_puts ("#<primitive-procedure", port); |
| 606 | if (!SCM_FALSEP (name)) |
| 607 | { |
| 608 | scm_putc (' ', port); |
| 609 | scm_puts (SCM_SYMBOL_CHARS (name), port); |
| 610 | } |
| 611 | } |
| 612 | else |
| 613 | { |
| 614 | scm_puts ("#<compiled-closure ", port); |
| 615 | scm_iprin1 (proc, port, pstate); |
| 616 | } |
| 617 | scm_putc ('>', port); |
| 618 | } |
| 619 | break; |
| 620 | #endif |
| 621 | case scm_tc7_pws: |
| 622 | scm_puts ("#<procedure-with-setter", port); |
| 623 | { |
| 624 | SCM name = scm_procedure_name (exp); |
| 625 | if (!SCM_FALSEP (name)) |
| 626 | { |
| 627 | scm_putc (' ', port); |
| 628 | scm_display (name, port); |
| 629 | } |
| 630 | } |
| 631 | scm_putc ('>', port); |
| 632 | break; |
| 633 | case scm_tc7_port: |
| 634 | { |
| 635 | register long i = SCM_PTOBNUM (exp); |
| 636 | if (i < scm_numptob |
| 637 | && scm_ptobs[i].print |
| 638 | && (scm_ptobs[i].print) (exp, port, pstate)) |
| 639 | break; |
| 640 | goto punk; |
| 641 | } |
| 642 | case scm_tc7_smob: |
| 643 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 644 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); |
| 645 | EXIT_NESTED_DATA (pstate); |
| 646 | break; |
| 647 | default: |
| 648 | punk: |
| 649 | scm_ipruk ("type", exp, port); |
| 650 | } |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | /* Print states are necessary for circular reference safe printing. |
| 655 | * They are also expensive to allocate. Therefore print states are |
| 656 | * kept in a pool so that they can be reused. |
| 657 | */ |
| 658 | |
| 659 | /* The PORT argument can also be a print-state/port pair, which will |
| 660 | * then be used instead of allocating a new print state. This is |
| 661 | * useful for continuing a chain of print calls from Scheme. */ |
| 662 | |
| 663 | void |
| 664 | scm_prin1 (SCM exp, SCM port, int writingp) |
| 665 | { |
| 666 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
| 667 | SCM pstate_scm; |
| 668 | scm_print_state *pstate; |
| 669 | int old_writingp; |
| 670 | |
| 671 | /* If PORT is a print-state/port pair, use that. Else create a new |
| 672 | print-state. */ |
| 673 | |
| 674 | if (SCM_PORT_WITH_PS_P (port)) |
| 675 | { |
| 676 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
| 677 | port = SCM_PORT_WITH_PS_PORT (port); |
| 678 | } |
| 679 | else |
| 680 | { |
| 681 | /* First try to allocate a print state from the pool */ |
| 682 | scm_i_plugin_mutex_lock (&print_state_mutex); |
| 683 | if (!SCM_NULLP (print_state_pool)) |
| 684 | { |
| 685 | handle = print_state_pool; |
| 686 | print_state_pool = SCM_CDR (print_state_pool); |
| 687 | } |
| 688 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
| 689 | if (SCM_FALSEP (handle)) |
| 690 | handle = scm_list_1 (make_print_state ()); |
| 691 | pstate_scm = SCM_CAR (handle); |
| 692 | } |
| 693 | |
| 694 | pstate = SCM_PRINT_STATE (pstate_scm); |
| 695 | old_writingp = pstate->writingp; |
| 696 | pstate->writingp = writingp; |
| 697 | scm_iprin1 (exp, port, pstate); |
| 698 | pstate->writingp = old_writingp; |
| 699 | |
| 700 | /* Return print state to pool if it has been created above and |
| 701 | hasn't escaped to Scheme. */ |
| 702 | |
| 703 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
| 704 | { |
| 705 | scm_i_plugin_mutex_lock (&print_state_mutex); |
| 706 | SCM_SETCDR (handle, print_state_pool); |
| 707 | print_state_pool = handle; |
| 708 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
| 709 | } |
| 710 | } |
| 711 | |
| 712 | |
| 713 | /* Print an integer. |
| 714 | */ |
| 715 | |
| 716 | void |
| 717 | scm_intprint (long n, int radix, SCM port) |
| 718 | { |
| 719 | char num_buf[SCM_INTBUFLEN]; |
| 720 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
| 721 | } |
| 722 | |
| 723 | /* Print an object of unrecognized type. |
| 724 | */ |
| 725 | |
| 726 | void |
| 727 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
| 728 | { |
| 729 | scm_puts ("#<unknown-", port); |
| 730 | scm_puts (hdr, port); |
| 731 | if (scm_in_heap_p (ptr)) |
| 732 | { |
| 733 | scm_puts (" (0x", port); |
| 734 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
| 735 | scm_puts (" . 0x", port); |
| 736 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
| 737 | scm_puts (") @", port); |
| 738 | } |
| 739 | scm_puts (" 0x", port); |
| 740 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
| 741 | scm_putc ('>', port); |
| 742 | } |
| 743 | |
| 744 | |
| 745 | /* Print a list. |
| 746 | */ |
| 747 | void |
| 748 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
| 749 | { |
| 750 | register SCM hare, tortoise; |
| 751 | long floor = pstate->top - 2; |
| 752 | scm_puts (hdr, port); |
| 753 | /* CHECK_INTS; */ |
| 754 | if (pstate->fancyp) |
| 755 | goto fancy_printing; |
| 756 | |
| 757 | /* Run a hare and tortoise so that total time complexity will be |
| 758 | O(depth * N) instead of O(N^2). */ |
| 759 | hare = SCM_CDR (exp); |
| 760 | tortoise = exp; |
| 761 | while (SCM_CONSP (hare)) |
| 762 | { |
| 763 | if (SCM_EQ_P (hare, tortoise)) |
| 764 | goto fancy_printing; |
| 765 | hare = SCM_CDR (hare); |
| 766 | if (!SCM_CONSP (hare)) |
| 767 | break; |
| 768 | hare = SCM_CDR (hare); |
| 769 | tortoise = SCM_CDR (tortoise); |
| 770 | } |
| 771 | |
| 772 | /* No cdr cycles intrinsic to this list */ |
| 773 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
| 774 | for (exp = SCM_CDR (exp); SCM_CONSP (exp); exp = SCM_CDR (exp)) |
| 775 | { |
| 776 | register long i; |
| 777 | |
| 778 | for (i = floor; i >= 0; --i) |
| 779 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
| 780 | goto circref; |
| 781 | PUSH_REF (pstate, exp); |
| 782 | scm_putc (' ', port); |
| 783 | /* CHECK_INTS; */ |
| 784 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
| 785 | } |
| 786 | if (!SCM_NULL_OR_NIL_P (exp)) |
| 787 | { |
| 788 | scm_puts (" . ", port); |
| 789 | scm_iprin1 (exp, port, pstate); |
| 790 | } |
| 791 | |
| 792 | end: |
| 793 | scm_putc (tlr, port); |
| 794 | pstate->top = floor + 2; |
| 795 | return; |
| 796 | |
| 797 | fancy_printing: |
| 798 | { |
| 799 | long n = pstate->length; |
| 800 | |
| 801 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
| 802 | exp = SCM_CDR (exp); --n; |
| 803 | for (; SCM_CONSP (exp); exp = SCM_CDR (exp)) |
| 804 | { |
| 805 | register unsigned long i; |
| 806 | |
| 807 | for (i = 0; i < pstate->top; ++i) |
| 808 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
| 809 | goto fancy_circref; |
| 810 | if (pstate->fancyp) |
| 811 | { |
| 812 | if (n == 0) |
| 813 | { |
| 814 | scm_puts (" ...", port); |
| 815 | goto skip_tail; |
| 816 | } |
| 817 | else |
| 818 | --n; |
| 819 | } |
| 820 | PUSH_REF(pstate, exp); |
| 821 | ++pstate->list_offset; |
| 822 | scm_putc (' ', port); |
| 823 | /* CHECK_INTS; */ |
| 824 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
| 825 | } |
| 826 | } |
| 827 | if (!SCM_NULL_OR_NIL_P (exp)) |
| 828 | { |
| 829 | scm_puts (" . ", port); |
| 830 | scm_iprin1 (exp, port, pstate); |
| 831 | } |
| 832 | skip_tail: |
| 833 | pstate->list_offset -= pstate->top - floor - 2; |
| 834 | goto end; |
| 835 | |
| 836 | fancy_circref: |
| 837 | pstate->list_offset -= pstate->top - floor - 2; |
| 838 | |
| 839 | circref: |
| 840 | scm_puts (" . ", port); |
| 841 | print_circref (port, pstate, exp); |
| 842 | goto end; |
| 843 | } |
| 844 | |
| 845 | \f |
| 846 | |
| 847 | int |
| 848 | scm_valid_oport_value_p (SCM val) |
| 849 | { |
| 850 | return (SCM_OPOUTPORTP (val) |
| 851 | || (SCM_PORT_WITH_PS_P (val) |
| 852 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); |
| 853 | } |
| 854 | |
| 855 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
| 856 | |
| 857 | SCM |
| 858 | scm_write (SCM obj, SCM port) |
| 859 | { |
| 860 | if (SCM_UNBNDP (port)) |
| 861 | port = scm_cur_outp; |
| 862 | |
| 863 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); |
| 864 | |
| 865 | scm_prin1 (obj, port, 1); |
| 866 | #ifdef HAVE_PIPE |
| 867 | # ifdef EPIPE |
| 868 | if (EPIPE == errno) |
| 869 | scm_close_port (port); |
| 870 | # endif |
| 871 | #endif |
| 872 | return SCM_UNSPECIFIED; |
| 873 | } |
| 874 | |
| 875 | |
| 876 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
| 877 | |
| 878 | SCM |
| 879 | scm_display (SCM obj, SCM port) |
| 880 | { |
| 881 | if (SCM_UNBNDP (port)) |
| 882 | port = scm_cur_outp; |
| 883 | |
| 884 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); |
| 885 | |
| 886 | scm_prin1 (obj, port, 0); |
| 887 | #ifdef HAVE_PIPE |
| 888 | # ifdef EPIPE |
| 889 | if (EPIPE == errno) |
| 890 | scm_close_port (port); |
| 891 | # endif |
| 892 | #endif |
| 893 | return SCM_UNSPECIFIED; |
| 894 | } |
| 895 | |
| 896 | |
| 897 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, |
| 898 | (SCM destination, SCM message, SCM args), |
| 899 | "Write @var{message} to @var{destination}, defaulting to\n" |
| 900 | "the current output port.\n" |
| 901 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" |
| 902 | "@code{~S} (was @code{%S}) escapes. When printed,\n" |
| 903 | "the escapes are replaced with corresponding members of\n" |
| 904 | "@var{ARGS}:\n" |
| 905 | "@code{~A} formats using @code{display} and @code{~S} formats\n" |
| 906 | "using @code{write}.\n" |
| 907 | "If @var{destination} is @code{#t}, then use the current output\n" |
| 908 | "port, if @var{destination} is @code{#f}, then return a string\n" |
| 909 | "containing the formatted text. Does not add a trailing newline.") |
| 910 | #define FUNC_NAME s_scm_simple_format |
| 911 | { |
| 912 | SCM port, answer = SCM_UNSPECIFIED; |
| 913 | int fReturnString = 0; |
| 914 | int writingp; |
| 915 | char *start; |
| 916 | char *end; |
| 917 | char *p; |
| 918 | |
| 919 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
| 920 | { |
| 921 | destination = port = scm_cur_outp; |
| 922 | } |
| 923 | else if (SCM_FALSEP (destination)) |
| 924 | { |
| 925 | fReturnString = 1; |
| 926 | port = scm_mkstrport (SCM_INUM0, |
| 927 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), |
| 928 | SCM_OPN | SCM_WRTNG, |
| 929 | FUNC_NAME); |
| 930 | destination = port; |
| 931 | } |
| 932 | else |
| 933 | { |
| 934 | SCM_VALIDATE_OPORT_VALUE (1, destination); |
| 935 | port = SCM_COERCE_OUTPORT (destination); |
| 936 | } |
| 937 | SCM_VALIDATE_STRING (2, message); |
| 938 | SCM_VALIDATE_REST_ARGUMENT (args); |
| 939 | |
| 940 | start = SCM_STRING_CHARS (message); |
| 941 | end = start + SCM_STRING_LENGTH (message); |
| 942 | for (p = start; p != end; ++p) |
| 943 | if (*p == '~') |
| 944 | { |
| 945 | if (++p == end) |
| 946 | break; |
| 947 | |
| 948 | switch (*p) |
| 949 | { |
| 950 | case 'A': case 'a': |
| 951 | writingp = 0; |
| 952 | break; |
| 953 | case 'S': case 's': |
| 954 | writingp = 1; |
| 955 | break; |
| 956 | case '~': |
| 957 | scm_lfwrite (start, p - start, port); |
| 958 | start = p + 1; |
| 959 | continue; |
| 960 | case '%': |
| 961 | scm_lfwrite (start, p - start - 1, port); |
| 962 | scm_newline (port); |
| 963 | start = p + 1; |
| 964 | continue; |
| 965 | default: |
| 966 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
| 967 | scm_list_1 (SCM_MAKE_CHAR (*p))); |
| 968 | |
| 969 | } |
| 970 | |
| 971 | |
| 972 | if (!SCM_CONSP (args)) |
| 973 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
| 974 | scm_list_1 (SCM_MAKE_CHAR (*p))); |
| 975 | |
| 976 | scm_lfwrite (start, p - start - 1, port); |
| 977 | /* we pass destination here */ |
| 978 | scm_prin1 (SCM_CAR (args), destination, writingp); |
| 979 | args = SCM_CDR (args); |
| 980 | start = p + 1; |
| 981 | } |
| 982 | |
| 983 | scm_lfwrite (start, p - start, port); |
| 984 | if (!SCM_EQ_P (args, SCM_EOL)) |
| 985 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
| 986 | scm_list_1 (scm_length (args))); |
| 987 | |
| 988 | if (fReturnString) |
| 989 | answer = scm_strport_to_string (destination); |
| 990 | |
| 991 | return scm_return_first (answer, message); |
| 992 | } |
| 993 | #undef FUNC_NAME |
| 994 | |
| 995 | |
| 996 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
| 997 | (SCM port), |
| 998 | "Send a newline to @var{port}.\n" |
| 999 | "If @var{port} is omitted, send to the current output port.") |
| 1000 | #define FUNC_NAME s_scm_newline |
| 1001 | { |
| 1002 | if (SCM_UNBNDP (port)) |
| 1003 | port = scm_cur_outp; |
| 1004 | |
| 1005 | SCM_VALIDATE_OPORT_VALUE (1, port); |
| 1006 | |
| 1007 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
| 1008 | return SCM_UNSPECIFIED; |
| 1009 | } |
| 1010 | #undef FUNC_NAME |
| 1011 | |
| 1012 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
| 1013 | (SCM chr, SCM port), |
| 1014 | "Send character @var{chr} to @var{port}.") |
| 1015 | #define FUNC_NAME s_scm_write_char |
| 1016 | { |
| 1017 | if (SCM_UNBNDP (port)) |
| 1018 | port = scm_cur_outp; |
| 1019 | |
| 1020 | SCM_VALIDATE_CHAR (1, chr); |
| 1021 | SCM_VALIDATE_OPORT_VALUE (2, port); |
| 1022 | |
| 1023 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
| 1024 | #ifdef HAVE_PIPE |
| 1025 | # ifdef EPIPE |
| 1026 | if (EPIPE == errno) |
| 1027 | scm_close_port (port); |
| 1028 | # endif |
| 1029 | #endif |
| 1030 | return SCM_UNSPECIFIED; |
| 1031 | } |
| 1032 | #undef FUNC_NAME |
| 1033 | |
| 1034 | \f |
| 1035 | |
| 1036 | /* Call back to Scheme code to do the printing of special objects |
| 1037 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
| 1038 | * containing PORT and PSTATE. This object can be used as the port for |
| 1039 | * display/write etc to continue the current print chain. The REVEALED |
| 1040 | * field of PSTATE is set to true to indicate that the print state has |
| 1041 | * escaped to Scheme and thus has to be freed by the GC. |
| 1042 | */ |
| 1043 | |
| 1044 | scm_t_bits scm_tc16_port_with_ps; |
| 1045 | |
| 1046 | /* Print exactly as the port itself would */ |
| 1047 | |
| 1048 | static int |
| 1049 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
| 1050 | { |
| 1051 | obj = SCM_PORT_WITH_PS_PORT (obj); |
| 1052 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); |
| 1053 | } |
| 1054 | |
| 1055 | SCM |
| 1056 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
| 1057 | { |
| 1058 | pstate->revealed = 1; |
| 1059 | return scm_call_2 (proc, exp, |
| 1060 | scm_i_port_with_print_state (port, pstate->handle)); |
| 1061 | } |
| 1062 | |
| 1063 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
| 1064 | (SCM port, SCM pstate), |
| 1065 | "Create a new port which behaves like @var{port}, but with an\n" |
| 1066 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
| 1067 | "If @var{pstate} isn't supplied and @var{port} already has\n" |
| 1068 | "a print state, the old print state is reused.") |
| 1069 | #define FUNC_NAME s_scm_port_with_print_state |
| 1070 | { |
| 1071 | SCM_VALIDATE_OPORT_VALUE (1, port); |
| 1072 | if (!SCM_UNBNDP (pstate)) |
| 1073 | SCM_VALIDATE_PRINTSTATE (2, pstate); |
| 1074 | return scm_i_port_with_print_state (port, pstate); |
| 1075 | } |
| 1076 | #undef FUNC_NAME |
| 1077 | |
| 1078 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
| 1079 | (SCM port), |
| 1080 | "Return the print state of the port @var{port}. If @var{port}\n" |
| 1081 | "has no associated print state, @code{#f} is returned.") |
| 1082 | #define FUNC_NAME s_scm_get_print_state |
| 1083 | { |
| 1084 | if (SCM_PORT_WITH_PS_P (port)) |
| 1085 | return SCM_PORT_WITH_PS_PS (port); |
| 1086 | if (SCM_OUTPUT_PORT_P (port)) |
| 1087 | return SCM_BOOL_F; |
| 1088 | SCM_WRONG_TYPE_ARG (1, port); |
| 1089 | } |
| 1090 | #undef FUNC_NAME |
| 1091 | |
| 1092 | \f |
| 1093 | |
| 1094 | void |
| 1095 | scm_init_print () |
| 1096 | { |
| 1097 | SCM vtable, layout, type; |
| 1098 | |
| 1099 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
| 1100 | |
| 1101 | scm_gc_register_root (&print_state_pool); |
| 1102 | scm_gc_register_root (&scm_print_state_vtable); |
| 1103 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
| 1104 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
| 1105 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
| 1106 | scm_set_struct_vtable_name_x (type, scm_str2symbol ("print-state")); |
| 1107 | scm_print_state_vtable = type; |
| 1108 | |
| 1109 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
| 1110 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); |
| 1111 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); |
| 1112 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
| 1113 | |
| 1114 | #include "libguile/print.x" |
| 1115 | } |
| 1116 | |
| 1117 | /* |
| 1118 | Local Variables: |
| 1119 | c-file-style: "gnu" |
| 1120 | End: |
| 1121 | */ |