Commit | Line | Data |
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78a0461a | 1 | /* Copyright (C) 1995-1999 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program 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 | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
48 | #include "_scm.h" | |
20e6290e | 49 | #include "chars.h" |
20e6290e JB |
50 | #include "smob.h" |
51 | #include "eval.h" | |
ddeae7ca | 52 | #include "macros.h" |
20e6290e JB |
53 | #include "procprop.h" |
54 | #include "read.h" | |
55 | #include "weaks.h" | |
56 | #include "unif.h" | |
dbef8851 | 57 | #include "alist.h" |
c62fbfe1 | 58 | #include "struct.h" |
8b840115 | 59 | #include "objects.h" |
f04d8caf | 60 | #include "ports.h" |
ba11fd4c | 61 | #include "root.h" |
7ab3fdd5 | 62 | #include "strings.h" |
70d63753 | 63 | #include "strports.h" |
003d1fd0 | 64 | #include "vectors.h" |
0f2d19dd | 65 | |
b6791b2e | 66 | #include "validate.h" |
20e6290e | 67 | #include "print.h" |
0f2d19dd JB |
68 | \f |
69 | ||
70 | /* {Names of immediate symbols} | |
71 | * | |
72 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
73 | */ | |
74 | ||
75 | char *scm_isymnames[] = | |
76 | { | |
77 | /* This table must agree with the declarations */ | |
78 | "#@and", | |
79 | "#@begin", | |
80 | "#@case", | |
81 | "#@cond", | |
82 | "#@do", | |
83 | "#@if", | |
84 | "#@lambda", | |
85 | "#@let", | |
86 | "#@let*", | |
87 | "#@letrec", | |
88 | "#@or", | |
89 | "#@quote", | |
90 | "#@set!", | |
91 | "#@define", | |
92 | #if 0 | |
93 | "#@literal-variable-ref", | |
94 | "#@literal-variable-set!", | |
95 | #endif | |
96 | "#@apply", | |
97 | "#@call-with-current-continuation", | |
98 | ||
99 | /* user visible ISYMS */ | |
100 | /* other keywords */ | |
101 | /* Flags */ | |
102 | ||
103 | "#f", | |
104 | "#t", | |
105 | "#<undefined>", | |
106 | "#<eof>", | |
107 | "()", | |
4df91bd6 MD |
108 | "#<unspecified>", |
109 | "#@dispatch", | |
43c667e9 MD |
110 | "#@slot-ref", |
111 | "#@slot-set!", | |
159500fb | 112 | |
159500fb MD |
113 | /* Multi-language support */ |
114 | ||
115 | "#@nil-cond", | |
116 | "#@nil-ify", | |
117 | "#@t-ify", | |
118 | "#@0-cond", | |
119 | "#@0-ify", | |
120 | "#@1-ify", | |
ccd0e478 MD |
121 | "#@bind", |
122 | ||
5623a9b4 MD |
123 | "#@delay", |
124 | ||
125 | "#<unbound>" | |
0f2d19dd JB |
126 | }; |
127 | ||
e6e4c9af | 128 | scm_option scm_print_opts[] = { |
f1267706 | 129 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK(SCM_BOOL_F), |
84f6a34a MD |
130 | "Hook for printing closures." }, |
131 | { SCM_OPTION_BOOLEAN, "source", 0, | |
132 | "Print closures with source." } | |
e6e4c9af MD |
133 | }; |
134 | ||
a1ec6916 | 135 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 GB |
136 | (SCM setting), |
137 | "") | |
138 | #define FUNC_NAME s_scm_print_options | |
e6e4c9af | 139 | { |
a51ea417 | 140 | SCM ans = scm_options (setting, |
b7ff98dd MD |
141 | scm_print_opts, |
142 | SCM_N_PRINT_OPTIONS, | |
1bbd0b84 | 143 | FUNC_NAME); |
e6e4c9af MD |
144 | return ans; |
145 | } | |
1bbd0b84 | 146 | #undef FUNC_NAME |
e6e4c9af | 147 | |
0f2d19dd JB |
148 | \f |
149 | /* {Printing of Scheme Objects} | |
150 | */ | |
151 | ||
a51ea417 | 152 | /* Detection of circular references. |
c62fbfe1 MD |
153 | * |
154 | * Due to other constraints in the implementation, this code has bad | |
155 | * time complexity (O (depth * N)), The printer code will be | |
156 | * completely rewritten before next release of Guile. The new code | |
157 | * will be O(N). | |
a51ea417 | 158 | */ |
c62fbfe1 | 159 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 160 | do { \ |
c62fbfe1 MD |
161 | pstate->ref_stack[pstate->top++] = (obj); \ |
162 | if (pstate->top == pstate->ceiling) \ | |
163 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 164 | } while(0) |
a51ea417 | 165 | |
c62fbfe1 | 166 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 167 | do { \ |
5ca6dc39 | 168 | register unsigned long i; \ |
c62fbfe1 MD |
169 | for (i = 0; i < pstate->top; ++i) \ |
170 | if (pstate->ref_stack[i] == (obj)) \ | |
171 | goto label; \ | |
172 | if (pstate->fancyp) \ | |
173 | { \ | |
174 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
175 | { \ | |
b7f3516f | 176 | scm_putc ('#', port); \ |
c62fbfe1 MD |
177 | return; \ |
178 | } \ | |
179 | } \ | |
180 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 181 | } while(0) |
a51ea417 | 182 | |
c62fbfe1 MD |
183 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
184 | ||
bb35f315 | 185 | SCM scm_print_state_vtable; |
c4f37e80 | 186 | |
bb35f315 | 187 | static SCM print_state_pool; |
c4f37e80 | 188 | |
f843a84c | 189 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 190 | |
3b3b36dd | 191 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 192 | (), |
b450f070 GB |
193 | "Return the current-pstate--the `cadr' of the print_state_pool.\n" |
194 | "`current-pstate' is only included in GUILE_DEBUG builds.") | |
1bbd0b84 | 195 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 MD |
196 | { |
197 | return SCM_CADR (print_state_pool); | |
198 | } | |
1bbd0b84 GB |
199 | #undef FUNC_NAME |
200 | ||
c62fbfe1 MD |
201 | #endif |
202 | ||
203 | #define PSTATE_SIZE 50L | |
204 | ||
698c0295 | 205 | static SCM |
1bbd0b84 | 206 | make_print_state (void) |
698c0295 MD |
207 | { |
208 | SCM print_state = scm_make_struct (SCM_CAR (print_state_pool), /* pstate type */ | |
bf685b6d | 209 | SCM_INUM0, |
698c0295 | 210 | SCM_EOL); |
bf685b6d MD |
211 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
212 | pstate->ref_vect = scm_make_vector (SCM_MAKINUM (PSTATE_SIZE), | |
bf685b6d MD |
213 | SCM_UNDEFINED); |
214 | pstate->ref_stack = SCM_VELTS (pstate->ref_vect); | |
215 | pstate->ceiling = SCM_LENGTH (pstate->ref_vect); | |
698c0295 MD |
216 | return print_state; |
217 | } | |
1cc91f1b | 218 | |
c62fbfe1 MD |
219 | SCM |
220 | scm_make_print_state () | |
c62fbfe1 | 221 | { |
698c0295 MD |
222 | SCM answer = 0; |
223 | ||
224 | /* First try to allocate a print state from the pool */ | |
225 | SCM_DEFER_INTS; | |
226 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) | |
227 | { | |
228 | answer = SCM_CADR (print_state_pool); | |
229 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
230 | } | |
231 | SCM_ALLOW_INTS; | |
232 | ||
233 | return answer ? answer : make_print_state (); | |
c62fbfe1 | 234 | } |
a51ea417 | 235 | |
698c0295 | 236 | void |
6e8d25a6 | 237 | scm_free_print_state (SCM print_state) |
698c0295 MD |
238 | { |
239 | SCM handle; | |
240 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
241 | /* Cleanup before returning print state to pool. | |
242 | * It is better to do it here. Doing it in scm_prin1 | |
243 | * would cost more since that function is called much more | |
244 | * often. | |
245 | */ | |
246 | pstate->fancyp = 0; | |
bb35f315 | 247 | pstate->revealed = 0; |
698c0295 MD |
248 | SCM_NEWCELL (handle); |
249 | SCM_DEFER_INTS; | |
250 | SCM_SETCAR (handle, print_state); | |
251 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
252 | SCM_SETCDR (print_state_pool, handle); | |
253 | SCM_ALLOW_INTS; | |
254 | } | |
1cc91f1b | 255 | |
a51ea417 | 256 | static void |
1bbd0b84 | 257 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 258 | { |
bf685b6d MD |
259 | int new_size = 2 * pstate->ceiling; |
260 | scm_vector_set_length_x (pstate->ref_vect, SCM_MAKINUM (new_size)); | |
261 | pstate->ref_stack = SCM_VELTS (pstate->ref_vect); | |
262 | pstate->ceiling = new_size; | |
a51ea417 MD |
263 | } |
264 | ||
1cc91f1b | 265 | |
a51ea417 | 266 | static void |
1bbd0b84 | 267 | print_circref (SCM port,scm_print_state *pstate,SCM ref) |
a51ea417 | 268 | { |
c62fbfe1 MD |
269 | register int i; |
270 | int self = pstate->top - 1; | |
271 | i = pstate->top - 1; | |
272 | if (SCM_CONSP (pstate->ref_stack[i])) | |
273 | { | |
274 | while (i > 0) | |
275 | { | |
276 | if (SCM_NCONSP (pstate->ref_stack[i - 1]) | |
277 | || SCM_CDR (pstate->ref_stack[i - 1]) != pstate->ref_stack[i]) | |
278 | break; | |
279 | --i; | |
280 | } | |
281 | self = i; | |
282 | } | |
283 | for (i = pstate->top - 1; 1; --i) | |
284 | if (pstate->ref_stack[i] == ref) | |
285 | break; | |
b7f3516f | 286 | scm_putc ('#', port); |
c62fbfe1 | 287 | scm_intprint (i - self, 10, port); |
b7f3516f | 288 | scm_putc ('#', port); |
a51ea417 MD |
289 | } |
290 | ||
c62fbfe1 | 291 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 292 | */ |
8b840115 MD |
293 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
294 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 295 | |
0f2d19dd | 296 | void |
1bbd0b84 | 297 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 298 | { |
0f2d19dd | 299 | taloop: |
54778cd3 | 300 | switch (SCM_ITAG3 (exp)) |
0f2d19dd JB |
301 | { |
302 | case 2: | |
303 | case 6: | |
304 | scm_intprint (SCM_INUM (exp), 10, port); | |
305 | break; | |
306 | case 4: | |
7866a09b | 307 | if (SCM_CHARP (exp)) |
0f2d19dd | 308 | { |
5ca6dc39 JB |
309 | register long i; |
310 | ||
7866a09b | 311 | i = SCM_CHAR (exp); |
b7f3516f TT |
312 | if (SCM_WRITINGP (pstate)) |
313 | { | |
314 | scm_puts ("#\\", port); | |
315 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
316 | scm_puts (scm_charnames[i], port); | |
317 | else if (i < 0 || i > '\177') | |
318 | scm_intprint (i, 8, port); | |
319 | else | |
320 | scm_putc (i, port); | |
321 | } | |
322 | else | |
323 | scm_putc (i, port); | |
0f2d19dd | 324 | } |
a51ea417 | 325 | else if (SCM_IFLAGP (exp) |
5ca6dc39 | 326 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
b7f3516f | 327 | scm_puts (SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
328 | else if (SCM_ILOCP (exp)) |
329 | { | |
b7f3516f | 330 | scm_puts ("#@", port); |
54778cd3 | 331 | scm_intprint (SCM_UNPACK (SCM_IFRAME (exp)), 10, port); |
b7f3516f | 332 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
54778cd3 | 333 | scm_intprint (SCM_UNPACK (SCM_IDIST (exp)), 10, port); |
0f2d19dd JB |
334 | } |
335 | else | |
336 | goto idef; | |
337 | break; | |
338 | case 1: | |
339 | /* gloc */ | |
b7f3516f | 340 | scm_puts ("#@", port); |
998308d3 | 341 | exp = SCM_GLOC_SYM (exp); |
0f2d19dd JB |
342 | goto taloop; |
343 | default: | |
344 | idef: | |
345 | scm_ipruk ("immediate", exp, port); | |
346 | break; | |
347 | case 0: | |
348 | switch (SCM_TYP7 (exp)) | |
349 | { | |
350 | case scm_tcs_cons_gloc: | |
351 | ||
998308d3 | 352 | if (SCM_CDR ((SCM) SCM_STRUCT_VTABLE_DATA (exp)) == (SCM) 0) |
0f2d19dd | 353 | { |
c4f37e80 | 354 | ENTER_NESTED_DATA (pstate, exp, circref); |
8b840115 MD |
355 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) |
356 | { | |
357 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
358 | if (!print) | |
359 | goto print_struct; | |
360 | SCM_NEWSMOB (pwps, | |
361 | scm_tc16_port_with_ps, | |
54778cd3 | 362 | SCM_UNPACK (scm_cons (port, pstate->handle))); |
8b840115 MD |
363 | scm_call_generic_2 (print, exp, pwps); |
364 | } | |
365 | else | |
366 | { | |
367 | print_struct: | |
368 | scm_print_struct (exp, port, pstate); | |
369 | } | |
c4f37e80 | 370 | EXIT_NESTED_DATA (pstate); |
0f2d19dd JB |
371 | break; |
372 | } | |
373 | ||
374 | case scm_tcs_cons_imcar: | |
375 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
376 | ENTER_NESTED_DATA (pstate, exp, circref); |
377 | scm_iprlist ("(", exp, ')', port, pstate); | |
378 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
379 | break; |
380 | circref: | |
c62fbfe1 | 381 | print_circref (port, pstate, exp); |
0f2d19dd | 382 | break; |
7332df66 | 383 | macros: |
80ea260c | 384 | if (!SCM_CLOSUREP (SCM_CDR (exp))) |
7332df66 | 385 | goto prinmacro; |
0f2d19dd | 386 | case scm_tcs_closures: |
7332df66 MD |
387 | /* The user supplied print closure procedure must handle |
388 | macro closures as well. */ | |
bb35f315 MV |
389 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
390 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 391 | exp, port, pstate))) |
bb35f315 | 392 | { |
ba031394 | 393 | SCM name, code, env; |
bb35f315 MV |
394 | if (SCM_TYP16 (exp) == scm_tc16_macro) |
395 | { | |
396 | /* Printing a macro. */ | |
397 | prinmacro: | |
398 | name = scm_macro_name (exp); | |
399 | if (!SCM_CLOSUREP (SCM_CDR (exp))) | |
400 | { | |
f44dd64b | 401 | code = env = 0; |
b7f3516f | 402 | scm_puts ("#<primitive-", port); |
bb35f315 MV |
403 | } |
404 | else | |
405 | { | |
406 | code = SCM_CODE (SCM_CDR (exp)); | |
ba031394 | 407 | env = SCM_ENV (SCM_CDR (exp)); |
b7f3516f | 408 | scm_puts ("#<", port); |
bb35f315 | 409 | } |
f1267706 | 410 | if (SCM_UNPACK_CAR(exp) & (3L << 16)) |
b7f3516f | 411 | scm_puts ("macro", port); |
bb35f315 | 412 | else |
b7f3516f | 413 | scm_puts ("syntax", port); |
f1267706 | 414 | if (SCM_UNPACK_CAR (exp) & (2L << 16)) |
b7f3516f | 415 | scm_putc ('!', port); |
bb35f315 MV |
416 | } |
417 | else | |
418 | { | |
419 | /* Printing a closure. */ | |
420 | name = scm_procedure_name (exp); | |
421 | code = SCM_CODE (exp); | |
ba031394 | 422 | env = SCM_ENV (exp); |
b7f3516f | 423 | scm_puts ("#<procedure", port); |
bb35f315 | 424 | } |
0c95b57d | 425 | if (SCM_ROSTRINGP (name)) |
bb35f315 | 426 | { |
b7f3516f TT |
427 | scm_putc (' ', port); |
428 | scm_puts (SCM_ROCHARS (name), port); | |
bb35f315 MV |
429 | } |
430 | if (code) | |
431 | { | |
ba031394 MD |
432 | if (SCM_PRINT_SOURCE_P) |
433 | { | |
434 | code = scm_unmemocopy (code, | |
435 | SCM_EXTEND_ENV (SCM_CAR (code), | |
436 | SCM_EOL, | |
437 | env)); | |
438 | ENTER_NESTED_DATA (pstate, exp, circref); | |
439 | scm_iprlist (" ", code, '>', port, pstate); | |
440 | EXIT_NESTED_DATA (pstate); | |
441 | } | |
442 | else | |
443 | { | |
444 | if (SCM_TYP16 (exp) != scm_tc16_macro) | |
445 | { | |
b7f3516f | 446 | scm_putc (' ', port); |
ba031394 MD |
447 | scm_iprin1 (SCM_CAR (code), port, pstate); |
448 | } | |
b7f3516f | 449 | scm_putc ('>', port); |
ba031394 | 450 | } |
bb35f315 MV |
451 | } |
452 | else | |
b7f3516f | 453 | scm_putc ('>', port); |
bb35f315 | 454 | } |
0f2d19dd | 455 | break; |
0f2d19dd JB |
456 | case scm_tc7_substring: |
457 | case scm_tc7_string: | |
c62fbfe1 | 458 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 459 | { |
5ca6dc39 JB |
460 | scm_sizet i; |
461 | ||
b7f3516f | 462 | scm_putc ('"', port); |
0f2d19dd JB |
463 | for (i = 0; i < SCM_ROLENGTH (exp); ++i) |
464 | switch (SCM_ROCHARS (exp)[i]) | |
465 | { | |
dbef8851 | 466 | case '"': |
0f2d19dd | 467 | case '\\': |
b7f3516f | 468 | scm_putc ('\\', port); |
0f2d19dd | 469 | default: |
b7f3516f | 470 | scm_putc (SCM_ROCHARS (exp)[i], port); |
0f2d19dd | 471 | } |
b7f3516f | 472 | scm_putc ('"', port); |
0f2d19dd JB |
473 | break; |
474 | } | |
475 | else | |
b7f3516f TT |
476 | scm_lfwrite (SCM_ROCHARS (exp), (scm_sizet) SCM_ROLENGTH (exp), |
477 | port); | |
0f2d19dd JB |
478 | break; |
479 | case scm_tcs_symbols: | |
0f2d19dd JB |
480 | { |
481 | int pos; | |
482 | int end; | |
483 | int len; | |
484 | char * str; | |
485 | int weird; | |
486 | int maybe_weird; | |
4dc2435a | 487 | int mw_pos = 0; |
0f2d19dd JB |
488 | |
489 | len = SCM_LENGTH (exp); | |
490 | str = SCM_CHARS (exp); | |
491 | scm_remember (&exp); | |
492 | pos = 0; | |
493 | weird = 0; | |
494 | maybe_weird = 0; | |
495 | ||
496 | if (len == 0) | |
b7f3516f | 497 | scm_lfwrite ("#{}#", 4, port); |
0f2d19dd JB |
498 | |
499 | for (end = pos; end < len; ++end) | |
500 | switch (str[end]) | |
501 | { | |
502 | #ifdef BRACKETS_AS_PARENS | |
503 | case '[': | |
504 | case ']': | |
505 | #endif | |
506 | case '(': | |
507 | case ')': | |
dbef8851 | 508 | case '"': |
0f2d19dd JB |
509 | case ';': |
510 | case SCM_WHITE_SPACES: | |
511 | case SCM_LINE_INCREMENTORS: | |
512 | weird_handler: | |
513 | if (maybe_weird) | |
514 | { | |
515 | end = mw_pos; | |
516 | maybe_weird = 0; | |
517 | } | |
518 | if (!weird) | |
519 | { | |
b7f3516f | 520 | scm_lfwrite ("#{", 2, port); |
0f2d19dd JB |
521 | weird = 1; |
522 | } | |
523 | if (pos < end) | |
524 | { | |
b7f3516f | 525 | scm_lfwrite (str + pos, end - pos, port); |
0f2d19dd JB |
526 | } |
527 | { | |
528 | char buf[2]; | |
529 | buf[0] = '\\'; | |
530 | buf[1] = str[end]; | |
b7f3516f | 531 | scm_lfwrite (buf, 2, port); |
0f2d19dd JB |
532 | } |
533 | pos = end + 1; | |
534 | break; | |
535 | case '\\': | |
536 | if (weird) | |
537 | goto weird_handler; | |
538 | if (!maybe_weird) | |
539 | { | |
540 | maybe_weird = 1; | |
541 | mw_pos = pos; | |
542 | } | |
543 | break; | |
544 | case '}': | |
545 | case '#': | |
546 | if (weird) | |
547 | goto weird_handler; | |
548 | break; | |
549 | default: | |
550 | break; | |
551 | } | |
552 | if (pos < end) | |
b7f3516f | 553 | scm_lfwrite (str + pos, end - pos, port); |
0f2d19dd | 554 | if (weird) |
b7f3516f | 555 | scm_lfwrite ("}#", 2, port); |
0f2d19dd JB |
556 | break; |
557 | } | |
558 | case scm_tc7_wvect: | |
c62fbfe1 | 559 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 560 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 561 | scm_puts ("#wh(", port); |
0f2d19dd | 562 | else |
b7f3516f | 563 | scm_puts ("#w(", port); |
0f2d19dd JB |
564 | goto common_vector_printer; |
565 | ||
566 | case scm_tc7_vector: | |
c62fbfe1 | 567 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 568 | scm_puts ("#(", port); |
0f2d19dd | 569 | common_vector_printer: |
9fbaf27c | 570 | { |
5ca6dc39 | 571 | register long i; |
9fbaf27c MD |
572 | int last = SCM_LENGTH (exp) - 1; |
573 | int cutp = 0; | |
574 | if (pstate->fancyp && SCM_LENGTH (exp) > pstate->length) | |
575 | { | |
576 | last = pstate->length - 1; | |
577 | cutp = 1; | |
578 | } | |
579 | for (i = 0; i < last; ++i) | |
580 | { | |
581 | /* CHECK_INTS; */ | |
582 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 583 | scm_putc (' ', port); |
9fbaf27c MD |
584 | } |
585 | if (i == last) | |
586 | { | |
587 | /* CHECK_INTS; */ | |
588 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
589 | } | |
590 | if (cutp) | |
b7f3516f TT |
591 | scm_puts (" ...", port); |
592 | scm_putc (')', port); | |
9fbaf27c | 593 | } |
c62fbfe1 | 594 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 595 | break; |
afe5177e | 596 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
597 | case scm_tc7_bvect: |
598 | case scm_tc7_byvect: | |
599 | case scm_tc7_svect: | |
600 | case scm_tc7_ivect: | |
601 | case scm_tc7_uvect: | |
602 | case scm_tc7_fvect: | |
603 | case scm_tc7_dvect: | |
604 | case scm_tc7_cvect: | |
5c11cc9d | 605 | #ifdef HAVE_LONG_LONGS |
0f2d19dd JB |
606 | case scm_tc7_llvect: |
607 | #endif | |
c62fbfe1 | 608 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 609 | break; |
afe5177e | 610 | #endif |
0f2d19dd | 611 | case scm_tcs_subrs: |
9de33deb MD |
612 | scm_puts (SCM_SUBR_GENERIC (exp) && *SCM_SUBR_GENERIC (exp) |
613 | ? "#<primitive-generic " | |
614 | : "#<primitive-procedure ", | |
615 | port); | |
b7f3516f TT |
616 | scm_puts (SCM_CHARS (SCM_SNAME (exp)), port); |
617 | scm_putc ('>', port); | |
0f2d19dd JB |
618 | break; |
619 | #ifdef CCLO | |
620 | case scm_tc7_cclo: | |
56977059 MD |
621 | { |
622 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 623 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
624 | { |
625 | /* Print gsubrs as primitives */ | |
c180dfd3 | 626 | SCM name = scm_procedure_name (exp); |
56977059 MD |
627 | scm_puts ("#<primitive-procedure", port); |
628 | if (SCM_NFALSEP (name)) | |
629 | { | |
630 | scm_putc (' ', port); | |
631 | scm_puts (SCM_CHARS (name), port); | |
632 | } | |
633 | } | |
634 | else | |
635 | { | |
636 | scm_puts ("#<compiled-closure ", port); | |
637 | scm_iprin1 (proc, port, pstate); | |
638 | } | |
639 | scm_putc ('>', port); | |
640 | } | |
0f2d19dd JB |
641 | break; |
642 | #endif | |
c180dfd3 MD |
643 | case scm_tc7_pws: |
644 | scm_puts ("#<procedure-with-setter", port); | |
645 | { | |
646 | SCM name = scm_procedure_name (exp); | |
647 | if (SCM_NFALSEP (name)) | |
648 | { | |
649 | scm_putc (' ', port); | |
650 | scm_puts (SCM_ROCHARS (name), port); | |
651 | } | |
652 | } | |
653 | scm_putc ('>', port); | |
654 | break; | |
0f2d19dd | 655 | case scm_tc7_contin: |
b7f3516f | 656 | scm_puts ("#<continuation ", port); |
0f2d19dd | 657 | scm_intprint (SCM_LENGTH (exp), 10, port); |
b7f3516f | 658 | scm_puts (" @ ", port); |
0f2d19dd | 659 | scm_intprint ((long) SCM_CHARS (exp), 16, port); |
b7f3516f | 660 | scm_putc ('>', port); |
0f2d19dd JB |
661 | break; |
662 | case scm_tc7_port: | |
5ca6dc39 JB |
663 | { |
664 | register long i = SCM_PTOBNUM (exp); | |
665 | if (i < scm_numptob | |
666 | && scm_ptobs[i].print | |
667 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 668 | break; |
5ca6dc39 JB |
669 | goto punk; |
670 | } | |
671 | case scm_tc7_smob: | |
672 | { | |
673 | register long i; | |
674 | ENTER_NESTED_DATA (pstate, exp, circref); | |
675 | i = SCM_SMOBNUM (exp); | |
676 | if (i < scm_numsmob && scm_smobs[i].print | |
677 | && (scm_smobs[i].print) (exp, port, pstate)) | |
678 | { | |
679 | EXIT_NESTED_DATA (pstate); | |
680 | break; | |
681 | } | |
682 | EXIT_NESTED_DATA (pstate); | |
683 | /* Macros have their print field set to NULL. They are | |
684 | handled at the same place as closures in order to achieve | |
685 | non-redundancy. Placing the condition here won't slow | |
686 | down printing of other smobs. */ | |
687 | if (SCM_TYP16 (exp) == scm_tc16_macro) | |
688 | goto macros; | |
689 | } | |
0f2d19dd | 690 | default: |
a51ea417 MD |
691 | punk: |
692 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
693 | } |
694 | } | |
695 | } | |
696 | ||
c62fbfe1 MD |
697 | /* Print states are necessary for circular reference safe printing. |
698 | * They are also expensive to allocate. Therefore print states are | |
699 | * kept in a pool so that they can be reused. | |
700 | */ | |
1cc91f1b | 701 | |
bb35f315 MV |
702 | /* The PORT argument can also be a print-state/port pair, which will |
703 | * then be used instead of allocating a new print state. This is | |
704 | * useful for continuing a chain of print calls from Scheme. */ | |
705 | ||
a51ea417 | 706 | void |
1bbd0b84 | 707 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 708 | { |
c4f37e80 MV |
709 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
710 | SCM pstate_scm; | |
c62fbfe1 MD |
711 | scm_print_state *pstate; |
712 | ||
bb35f315 MV |
713 | /* If PORT is a print-state/port pair, use that. Else create a new |
714 | print-state. */ | |
c4f37e80 | 715 | |
0c95b57d | 716 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 717 | { |
52235e71 MD |
718 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
719 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
720 | } |
721 | else | |
c62fbfe1 | 722 | { |
c4f37e80 MV |
723 | /* First try to allocate a print state from the pool */ |
724 | SCM_DEFER_INTS; | |
725 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) | |
726 | { | |
727 | handle = SCM_CDR (print_state_pool); | |
728 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
729 | } | |
730 | SCM_ALLOW_INTS; | |
54778cd3 | 731 | if (SCM_FALSEP (handle)) |
c4f37e80 MV |
732 | handle = scm_cons (make_print_state (), SCM_EOL); |
733 | pstate_scm = SCM_CAR (handle); | |
c62fbfe1 | 734 | } |
c62fbfe1 | 735 | |
c4f37e80 | 736 | pstate = SCM_PRINT_STATE (pstate_scm); |
c62fbfe1 MD |
737 | pstate->writingp = writingp; |
738 | scm_iprin1 (exp, port, pstate); | |
739 | ||
bb35f315 MV |
740 | /* Return print state to pool if it has been created above and |
741 | hasn't escaped to Scheme. */ | |
742 | ||
54778cd3 | 743 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 MV |
744 | { |
745 | SCM_DEFER_INTS; | |
746 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
747 | SCM_SETCDR (print_state_pool, handle); | |
748 | SCM_ALLOW_INTS; | |
749 | } | |
a51ea417 MD |
750 | } |
751 | ||
0f2d19dd JB |
752 | |
753 | /* Print an integer. | |
754 | */ | |
1cc91f1b | 755 | |
0f2d19dd | 756 | void |
1bbd0b84 | 757 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
758 | { |
759 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 760 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
761 | } |
762 | ||
763 | /* Print an object of unrecognized type. | |
764 | */ | |
1cc91f1b | 765 | |
0f2d19dd | 766 | void |
1bbd0b84 | 767 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 768 | { |
b7f3516f TT |
769 | scm_puts ("#<unknown-", port); |
770 | scm_puts (hdr, port); | |
0f2d19dd JB |
771 | if (SCM_CELLP (ptr)) |
772 | { | |
b7f3516f | 773 | scm_puts (" (0x", port); |
54778cd3 | 774 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 775 | scm_puts (" . 0x", port); |
54778cd3 | 776 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 777 | scm_puts (") @", port); |
0f2d19dd | 778 | } |
b7f3516f | 779 | scm_puts (" 0x", port); |
54778cd3 | 780 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 781 | scm_putc ('>', port); |
0f2d19dd JB |
782 | } |
783 | ||
784 | /* Print a list. | |
785 | */ | |
a51ea417 | 786 | |
1cc91f1b | 787 | |
0f2d19dd | 788 | void |
1bbd0b84 | 789 | scm_iprlist (char *hdr,SCM exp,int tlr,SCM port,scm_print_state *pstate) |
0f2d19dd | 790 | { |
c62fbfe1 MD |
791 | register SCM hare, tortoise; |
792 | int floor = pstate->top - 2; | |
b7f3516f | 793 | scm_puts (hdr, port); |
0f2d19dd | 794 | /* CHECK_INTS; */ |
c62fbfe1 MD |
795 | if (pstate->fancyp) |
796 | goto fancy_printing; | |
797 | ||
798 | /* Run a hare and tortoise so that total time complexity will be | |
799 | O(depth * N) instead of O(N^2). */ | |
800 | hare = SCM_CDR (exp); | |
801 | tortoise = exp; | |
0c95b57d | 802 | while (SCM_ECONSP (hare)) |
c62fbfe1 | 803 | { |
54778cd3 | 804 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
805 | goto fancy_printing; |
806 | hare = SCM_CDR (hare); | |
2fab3faa | 807 | if (SCM_IMP (hare) || SCM_NECONSP (hare)) |
c62fbfe1 MD |
808 | break; |
809 | hare = SCM_CDR (hare); | |
810 | tortoise = SCM_CDR (tortoise); | |
811 | } | |
812 | ||
813 | /* No cdr cycles intrinsic to this list */ | |
814 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
0f2d19dd JB |
815 | exp = SCM_CDR (exp); |
816 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
817 | { | |
5ca6dc39 JB |
818 | register int i; |
819 | ||
0f2d19dd JB |
820 | if (SCM_NECONSP (exp)) |
821 | break; | |
c62fbfe1 MD |
822 | for (i = floor; i >= 0; --i) |
823 | if (pstate->ref_stack[i] == exp) | |
824 | goto circref; | |
825 | PUSH_REF (pstate, exp); | |
b7f3516f | 826 | scm_putc (' ', port); |
0f2d19dd | 827 | /* CHECK_INTS; */ |
c62fbfe1 | 828 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd JB |
829 | } |
830 | if (SCM_NNULLP (exp)) | |
831 | { | |
b7f3516f | 832 | scm_puts (" . ", port); |
c62fbfe1 | 833 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 834 | } |
c62fbfe1 | 835 | |
a51ea417 | 836 | end: |
b7f3516f | 837 | scm_putc (tlr, port); |
c62fbfe1 | 838 | pstate->top = floor + 2; |
a51ea417 | 839 | return; |
c62fbfe1 MD |
840 | |
841 | fancy_printing: | |
842 | { | |
843 | int n = pstate->length; | |
844 | ||
845 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
846 | exp = SCM_CDR (exp); --n; | |
847 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
848 | { | |
5ca6dc39 JB |
849 | register unsigned long i; |
850 | ||
c62fbfe1 MD |
851 | if (SCM_NECONSP (exp)) |
852 | break; | |
853 | for (i = 0; i < pstate->top; ++i) | |
854 | if (pstate->ref_stack[i] == exp) | |
855 | goto fancy_circref; | |
856 | if (pstate->fancyp) | |
857 | { | |
858 | if (n == 0) | |
859 | { | |
b7f3516f | 860 | scm_puts (" ...", port); |
c62fbfe1 MD |
861 | goto skip_tail; |
862 | } | |
863 | else | |
864 | --n; | |
865 | } | |
866 | PUSH_REF(pstate, exp); | |
867 | ++pstate->list_offset; | |
b7f3516f | 868 | scm_putc (' ', port); |
c62fbfe1 MD |
869 | /* CHECK_INTS; */ |
870 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
871 | } | |
872 | } | |
873 | if (SCM_NNULLP (exp)) | |
874 | { | |
b7f3516f | 875 | scm_puts (" . ", port); |
c62fbfe1 MD |
876 | scm_iprin1 (exp, port, pstate); |
877 | } | |
878 | skip_tail: | |
879 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 880 | goto end; |
a51ea417 | 881 | |
c62fbfe1 MD |
882 | fancy_circref: |
883 | pstate->list_offset -= pstate->top - floor - 2; | |
884 | ||
885 | circref: | |
b7f3516f | 886 | scm_puts (" . ", port); |
c62fbfe1 MD |
887 | print_circref (port, pstate, exp); |
888 | goto end; | |
0f2d19dd JB |
889 | } |
890 | ||
891 | \f | |
892 | ||
bb35f315 MV |
893 | int |
894 | scm_valid_oport_value_p (SCM val) | |
895 | { | |
368cf54d GB |
896 | return (SCM_OPOUTPORTP (val) |
897 | || (SCM_PORT_WITH_PS_P (val) | |
898 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
899 | } |
900 | ||
8b840115 | 901 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 902 | |
0f2d19dd | 903 | SCM |
1bbd0b84 | 904 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
905 | { |
906 | if (SCM_UNBNDP (port)) | |
907 | port = scm_cur_outp; | |
3eb7e6ee JB |
908 | |
909 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 910 | |
a51ea417 | 911 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
912 | #ifdef HAVE_PIPE |
913 | # ifdef EPIPE | |
914 | if (EPIPE == errno) | |
915 | scm_close_port (port); | |
916 | # endif | |
917 | #endif | |
918 | return SCM_UNSPECIFIED; | |
919 | } | |
920 | ||
921 | ||
8b840115 | 922 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 923 | |
0f2d19dd | 924 | SCM |
1bbd0b84 | 925 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
926 | { |
927 | if (SCM_UNBNDP (port)) | |
928 | port = scm_cur_outp; | |
3eb7e6ee JB |
929 | |
930 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 931 | |
a51ea417 | 932 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
933 | #ifdef HAVE_PIPE |
934 | # ifdef EPIPE | |
935 | if (EPIPE == errno) | |
936 | scm_close_port (port); | |
937 | # endif | |
938 | #endif | |
939 | return SCM_UNSPECIFIED; | |
940 | } | |
941 | ||
70d63753 GB |
942 | |
943 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
944 | (SCM destination, SCM message, SCM args), | |
b380b885 MD |
945 | "Write MESSAGE to DESTINATION, defaulting to `current-output-port'.\n" |
946 | "MESSAGE can contain ~A (was %s) and ~S (was %S) escapes. When printed,\n" | |
947 | "the escapes are replaced with corresponding members of ARGS:\n" | |
948 | "~A formats using `display' and ~S formats using `write'.\n" | |
949 | "If DESTINATION is #t, then use the `current-output-port',\n" | |
950 | "if DESTINATION is #f, then return a string containing the formatted text.\n" | |
951 | "Does not add a trailing newline.") | |
70d63753 GB |
952 | #define FUNC_NAME s_scm_simple_format |
953 | { | |
954 | SCM answer = SCM_UNSPECIFIED; | |
955 | int fReturnString = 0; | |
956 | int writingp; | |
957 | char *start; | |
958 | char *p; | |
959 | ||
54778cd3 | 960 | if (SCM_TRUE_P (destination)) { |
70d63753 | 961 | destination = scm_cur_outp; |
54778cd3 | 962 | } else if (SCM_FALSEP (destination)) { |
70d63753 GB |
963 | fReturnString = 1; |
964 | destination = scm_mkstrport (SCM_INUM0, | |
965 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
966 | SCM_OPN | SCM_WRTNG, | |
967 | FUNC_NAME); | |
968 | } else { | |
969 | SCM_VALIDATE_OPORT_VALUE (1,destination); | |
970 | } | |
971 | SCM_VALIDATE_STRING(2,message); | |
972 | SCM_VALIDATE_LIST(3,args); | |
973 | ||
70d63753 GB |
974 | start = SCM_ROCHARS (message); |
975 | for (p = start; *p != '\0'; ++p) | |
976 | if (*p == '~') | |
977 | { | |
978 | if (SCM_IMP (args) || SCM_NCONSP (args)) | |
979 | continue; | |
980 | ||
981 | ++p; | |
982 | if (*p == 'A') | |
983 | writingp = 0; | |
984 | else if (*p == 'S') | |
985 | writingp = 1; | |
986 | else | |
987 | continue; | |
988 | ||
989 | scm_lfwrite (start, p - start - 1, destination); | |
990 | scm_prin1 (SCM_CAR (args), destination, writingp); | |
991 | args = SCM_CDR (args); | |
992 | start = p + 1; | |
993 | } | |
994 | scm_lfwrite (start, p - start, destination); | |
995 | ||
996 | if (fReturnString) | |
997 | answer = scm_strport_to_string (destination); | |
998 | ||
5d2d2ffc | 999 | return scm_return_first(answer,message); |
70d63753 GB |
1000 | } |
1001 | #undef FUNC_NAME | |
1002 | ||
1003 | ||
3b3b36dd | 1004 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 GB |
1005 | (SCM port), |
1006 | "Send a newline to PORT.") | |
1bbd0b84 | 1007 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1008 | { |
1009 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1010 | port = scm_cur_outp; |
3eb7e6ee | 1011 | |
3b3b36dd | 1012 | SCM_VALIDATE_OPORT_VALUE (1,port); |
bb35f315 | 1013 | |
0ef4ae82 | 1014 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1015 | return SCM_UNSPECIFIED; |
1016 | } | |
1bbd0b84 | 1017 | #undef FUNC_NAME |
0f2d19dd | 1018 | |
3b3b36dd | 1019 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 GB |
1020 | (SCM chr, SCM port), |
1021 | "Send character CHR to PORT.") | |
1bbd0b84 | 1022 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1023 | { |
1024 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1025 | port = scm_cur_outp; |
3eb7e6ee | 1026 | |
7866a09b | 1027 | SCM_VALIDATE_CHAR (1,chr); |
3b3b36dd | 1028 | SCM_VALIDATE_OPORT_VALUE (2,port); |
bb35f315 | 1029 | |
7866a09b | 1030 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1031 | #ifdef HAVE_PIPE |
1032 | # ifdef EPIPE | |
1033 | if (EPIPE == errno) | |
1034 | scm_close_port (port); | |
1035 | # endif | |
1036 | #endif | |
1037 | return SCM_UNSPECIFIED; | |
1038 | } | |
1bbd0b84 | 1039 | #undef FUNC_NAME |
0f2d19dd | 1040 | |
0f2d19dd JB |
1041 | \f |
1042 | ||
bb35f315 | 1043 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1044 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1045 | * containing PORT and PSTATE. This object can be used as the port for | |
1046 | * display/write etc to continue the current print chain. The REVEALED | |
1047 | * field of PSTATE is set to true to indicate that the print state has | |
1048 | * escaped to Scheme and thus has to be freed by the GC. | |
1049 | */ | |
1050 | ||
1051 | long scm_tc16_port_with_ps; | |
1052 | ||
1053 | /* Print exactly as the port itself would */ | |
1054 | ||
1055 | static int | |
1056 | print_port_with_ps (SCM obj, SCM port, scm_print_state *pstate) | |
1057 | { | |
1058 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1059 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1060 | } | |
c4f37e80 MV |
1061 | |
1062 | SCM | |
1bbd0b84 | 1063 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1064 | { |
c19bc088 | 1065 | SCM pwps; |
bb35f315 | 1066 | SCM pair = scm_cons (port, pstate->handle); |
54778cd3 | 1067 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (pair)); |
bb35f315 | 1068 | pstate->revealed = 1; |
c19bc088 MD |
1069 | return scm_apply (proc, exp, scm_cons (pwps, scm_listofnull)); |
1070 | } | |
1071 | ||
a1ec6916 | 1072 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 2, 0, 0, |
1bbd0b84 | 1073 | (SCM port, SCM pstate), |
b380b885 | 1074 | "") |
1bbd0b84 | 1075 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 MD |
1076 | { |
1077 | SCM pwps; | |
3b3b36dd GB |
1078 | SCM_VALIDATE_OPORT_VALUE (1,port); |
1079 | SCM_VALIDATE_PRINTSTATE (2,pstate); | |
c19bc088 | 1080 | port = SCM_COERCE_OUTPORT (port); |
54778cd3 | 1081 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (scm_cons (port, pstate))); |
c19bc088 MD |
1082 | return pwps; |
1083 | } | |
1bbd0b84 | 1084 | #undef FUNC_NAME |
c19bc088 | 1085 | |
a1ec6916 | 1086 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1087 | (SCM port), |
b380b885 | 1088 | "") |
1bbd0b84 | 1089 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1090 | { |
368cf54d GB |
1091 | if (SCM_PORT_WITH_PS_P (port)) |
1092 | return SCM_PORT_WITH_PS_PS (port); | |
1093 | if (SCM_OUTPORTP (port)) | |
1094 | return SCM_BOOL_F; | |
1bbd0b84 | 1095 | RETURN_SCM_WTA (1,port); |
c4f37e80 | 1096 | } |
1bbd0b84 | 1097 | #undef FUNC_NAME |
bb35f315 | 1098 | |
c4f37e80 | 1099 | \f |
1cc91f1b | 1100 | |
0f2d19dd JB |
1101 | void |
1102 | scm_init_print () | |
0f2d19dd | 1103 | { |
c19bc088 | 1104 | SCM vtable, layout, type; |
4bfdf158 | 1105 | |
b7ff98dd | 1106 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
4bfdf158 MD |
1107 | vtable = scm_make_vtable_vtable (scm_make_struct_layout (scm_nullstr), |
1108 | SCM_INUM0, | |
1109 | SCM_EOL); | |
1110 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); | |
c19bc088 | 1111 | type = scm_make_struct (vtable, SCM_INUM0, SCM_LIST1 (layout)); |
e9cd0e47 | 1112 | scm_set_struct_vtable_name_x (type, SCM_CAR (scm_intern0 ("print-state"))); |
c62fbfe1 | 1113 | print_state_pool = scm_permanent_object (scm_cons (type, SCM_EOL)); |
c4f37e80 | 1114 | |
bb35f315 | 1115 | scm_print_state_vtable = type; |
c4f37e80 | 1116 | |
c19bc088 MD |
1117 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1118 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1119 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
1120 | scm_set_smob_print (scm_tc16_port_with_ps, print_port_with_ps); | |
1121 | ||
0f2d19dd JB |
1122 | #include "print.x" |
1123 | } | |
89e00824 ML |
1124 | |
1125 | /* | |
1126 | Local Variables: | |
1127 | c-file-style: "gnu" | |
1128 | End: | |
1129 | */ |