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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
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 | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
20e6290e JB |
45 | #include "chars.h" |
46 | #include "genio.h" | |
47 | #include "mbstrings.h" | |
48 | #include "smob.h" | |
49 | #include "eval.h" | |
50 | #include "procprop.h" | |
51 | #include "read.h" | |
52 | #include "weaks.h" | |
53 | #include "unif.h" | |
0f2d19dd | 54 | |
20e6290e | 55 | #include "print.h" |
0f2d19dd JB |
56 | \f |
57 | ||
58 | /* {Names of immediate symbols} | |
59 | * | |
60 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
61 | */ | |
62 | ||
63 | char *scm_isymnames[] = | |
64 | { | |
65 | /* This table must agree with the declarations */ | |
66 | "#@and", | |
67 | "#@begin", | |
68 | "#@case", | |
69 | "#@cond", | |
70 | "#@do", | |
71 | "#@if", | |
72 | "#@lambda", | |
73 | "#@let", | |
74 | "#@let*", | |
75 | "#@letrec", | |
76 | "#@or", | |
77 | "#@quote", | |
78 | "#@set!", | |
79 | "#@define", | |
80 | #if 0 | |
81 | "#@literal-variable-ref", | |
82 | "#@literal-variable-set!", | |
83 | #endif | |
84 | "#@apply", | |
85 | "#@call-with-current-continuation", | |
86 | ||
87 | /* user visible ISYMS */ | |
88 | /* other keywords */ | |
89 | /* Flags */ | |
90 | ||
91 | "#f", | |
92 | "#t", | |
93 | "#<undefined>", | |
94 | "#<eof>", | |
95 | "()", | |
96 | "#<unspecified>" | |
97 | }; | |
98 | ||
e6e4c9af MD |
99 | #ifdef DEBUG_EXTENSIONS |
100 | scm_option scm_print_opts[] = { | |
b7ff98dd MD |
101 | { SCM_OPTION_BOOLEAN, "procnames", 0, |
102 | "Print names instead of closures." }, | |
103 | { SCM_OPTION_SCM, "closure-hook", SCM_BOOL_F, | |
104 | "Procedure used to print closures." } | |
e6e4c9af MD |
105 | }; |
106 | ||
b7ff98dd | 107 | SCM_PROC (s_print_options, "print-options-interface", 0, 1, 0, scm_print_options); |
e6e4c9af MD |
108 | #ifdef __STDC__ |
109 | SCM | |
a51ea417 | 110 | scm_print_options (SCM setting) |
e6e4c9af MD |
111 | #else |
112 | SCM | |
a51ea417 MD |
113 | scm_print_options (setting) |
114 | SCM setting; | |
e6e4c9af MD |
115 | #endif |
116 | { | |
a51ea417 | 117 | SCM ans = scm_options (setting, |
b7ff98dd MD |
118 | scm_print_opts, |
119 | SCM_N_PRINT_OPTIONS, | |
120 | s_print_options); | |
e6e4c9af MD |
121 | return ans; |
122 | } | |
123 | #endif | |
124 | ||
0f2d19dd JB |
125 | \f |
126 | /* {Printing of Scheme Objects} | |
127 | */ | |
128 | ||
a51ea417 MD |
129 | /* Detection of circular references. |
130 | */ | |
131 | typedef struct ref_stack { | |
132 | SCM vector; | |
133 | SCM *top; | |
134 | SCM *ceiling; | |
135 | SCM *floor; | |
136 | } ref_stack; | |
137 | ||
138 | #define RESET_REF_STACK(stack) { stack.top = stack.floor; } | |
139 | #define PUSH_REF(stack, obj, label) \ | |
140 | { \ | |
141 | register SCM *ref; \ | |
142 | for (ref = stack.floor; ref < stack.top; ++ref) \ | |
143 | if (*ref == (obj)) \ | |
144 | goto label; \ | |
145 | *stack.top++ = (obj); \ | |
146 | if (stack.top == stack.ceiling) \ | |
147 | grow_ref_stack (&stack); \ | |
148 | } \ | |
149 | ||
150 | #define POP_REF(stack) { --stack.top; } | |
151 | #define SAVE_REF_STACK(stack, save) \ | |
152 | { \ | |
153 | save = stack.floor - SCM_VELTS (stack.vector); \ | |
154 | stack.floor = stack.top; \ | |
155 | } \ | |
156 | ||
157 | #define RESTORE_REF_STACK(stack, save) \ | |
158 | { stack.floor = SCM_VELTS (stack.vector) + save; } | |
159 | ||
160 | #ifdef __STDC__ | |
161 | static void | |
162 | init_ref_stack (ref_stack *stack) | |
163 | #else | |
164 | static void | |
165 | init_ref_stack (stack) | |
166 | ref_stack *stack; | |
167 | #endif | |
168 | { | |
169 | stack->vector = scm_permanent_object (scm_make_vector (SCM_MAKINUM (30L), | |
170 | SCM_UNDEFINED, | |
171 | SCM_UNDEFINED)); | |
172 | stack->top = stack->floor = SCM_VELTS (stack->vector); | |
173 | stack->ceiling = stack->floor + SCM_LENGTH (stack->vector); | |
174 | } | |
175 | ||
176 | #ifdef __STDC__ | |
177 | static void | |
178 | grow_ref_stack (ref_stack *stack) | |
179 | #else | |
180 | static void | |
181 | grow_ref_stack (stack) | |
182 | ref_stack *stack; | |
183 | #endif | |
184 | { | |
185 | int offset, new_size = 2 * SCM_LENGTH (stack->vector); | |
186 | SCM *old_velts = SCM_VELTS (stack->vector); | |
187 | scm_vector_set_length_x (stack->vector, SCM_MAKINUM (new_size)); | |
188 | offset = SCM_VELTS (stack->vector) - old_velts; | |
189 | stack->top += offset; | |
190 | stack->floor += offset; | |
191 | stack->ceiling = SCM_VELTS (stack->vector) + new_size; | |
192 | } | |
193 | ||
194 | ||
0f2d19dd JB |
195 | /* Print generally. Handles both write and display according to WRITING. |
196 | */ | |
a51ea417 MD |
197 | |
198 | static ref_stack pstack; | |
199 | ||
0f2d19dd JB |
200 | #ifdef __STDC__ |
201 | void | |
202 | scm_iprin1 (SCM exp, SCM port, int writing) | |
203 | #else | |
204 | void | |
205 | scm_iprin1 (exp, port, writing) | |
206 | SCM exp; | |
207 | SCM port; | |
208 | int writing; | |
209 | #endif | |
210 | { | |
211 | register long i; | |
212 | taloop: | |
213 | switch (7 & (int) exp) | |
214 | { | |
215 | case 2: | |
216 | case 6: | |
217 | scm_intprint (SCM_INUM (exp), 10, port); | |
218 | break; | |
219 | case 4: | |
220 | if (SCM_ICHRP (exp)) | |
221 | { | |
222 | i = SCM_ICHR (exp); | |
223 | scm_put_wchar (i, port, writing); | |
224 | ||
225 | } | |
a51ea417 | 226 | else if (SCM_IFLAGP (exp) |
0f2d19dd | 227 | && (SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
08b5b88c | 228 | scm_gen_puts (scm_regular_string, SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
229 | else if (SCM_ILOCP (exp)) |
230 | { | |
231 | scm_gen_puts (scm_regular_string, "#@", port); | |
232 | scm_intprint ((long) SCM_IFRAME (exp), 10, port); | |
233 | scm_gen_putc (SCM_ICDRP (exp) ? '-' : '+', port); | |
234 | scm_intprint ((long) SCM_IDIST (exp), 10, port); | |
235 | } | |
236 | else | |
237 | goto idef; | |
238 | break; | |
239 | case 1: | |
240 | /* gloc */ | |
241 | scm_gen_puts (scm_regular_string, "#@", port); | |
242 | exp = SCM_CAR (exp - 1); | |
243 | goto taloop; | |
244 | default: | |
245 | idef: | |
246 | scm_ipruk ("immediate", exp, port); | |
247 | break; | |
248 | case 0: | |
249 | switch (SCM_TYP7 (exp)) | |
250 | { | |
251 | case scm_tcs_cons_gloc: | |
252 | ||
253 | if (SCM_CDR (SCM_CAR (exp) - 1L) == 0) | |
254 | { | |
a51ea417 | 255 | scm_gen_write (scm_regular_string, "#<struct ", sizeof ("#<struct ") - 1, port); |
0f2d19dd JB |
256 | scm_intprint(exp, 16, port); |
257 | scm_gen_putc ('>', port); | |
258 | break; | |
259 | } | |
260 | ||
261 | case scm_tcs_cons_imcar: | |
262 | case scm_tcs_cons_nimcar: | |
a51ea417 | 263 | PUSH_REF (pstack, exp, circref); |
0f2d19dd | 264 | scm_iprlist ("(", exp, ')', port, writing); |
a51ea417 MD |
265 | POP_REF (pstack); |
266 | break; | |
267 | circref: | |
268 | scm_gen_write (scm_regular_string, "#<circ ref>", sizeof ("#<circ ref>") - 1, port); | |
0f2d19dd JB |
269 | break; |
270 | case scm_tcs_closures: | |
271 | #ifdef DEBUG_EXTENSIONS | |
a51ea417 MD |
272 | if (SCM_NFALSEP (scm_procedure_p (SCM_PRINT_CLOSURE))) |
273 | { | |
274 | SCM ans = scm_cons2 (exp, port, | |
275 | scm_cons (writing ? SCM_BOOL_T : SCM_BOOL_F, SCM_EOL)); | |
276 | int save; | |
277 | SAVE_REF_STACK (pstack, save); | |
278 | ans = scm_apply (SCM_PRINT_CLOSURE, ans, SCM_EOL); | |
279 | RESTORE_REF_STACK (pstack, save); | |
280 | } | |
281 | else if (SCM_PRINT_PROCNAMES_P) | |
0f2d19dd JB |
282 | { |
283 | SCM name; | |
284 | name = scm_procedure_property (exp, scm_i_name); | |
285 | scm_gen_puts (scm_regular_string, "#<procedure", port); | |
286 | if (SCM_NFALSEP (name)) | |
287 | { | |
288 | scm_gen_putc (' ', port); | |
289 | /* FIXME */ | |
290 | scm_gen_puts (scm_regular_string, SCM_CHARS (name), port); | |
291 | } | |
292 | scm_gen_putc ('>', port); | |
293 | } | |
294 | else | |
295 | #endif | |
296 | { | |
a51ea417 MD |
297 | SCM code = SCM_CODE (exp); |
298 | exp = scm_unmemocopy (code, | |
08b5b88c | 299 | SCM_EXTEND_ENV (SCM_CAR (code), |
a51ea417 MD |
300 | SCM_EOL, |
301 | SCM_ENV (exp))); | |
0f2d19dd JB |
302 | scm_iprlist ("#<CLOSURE ", exp, '>', port, writing); |
303 | } | |
304 | break; | |
305 | case scm_tc7_mb_string: | |
306 | case scm_tc7_mb_substring: | |
307 | scm_print_mb_string (exp, port, writing); | |
308 | break; | |
309 | case scm_tc7_substring: | |
310 | case scm_tc7_string: | |
311 | if (writing) | |
312 | { | |
313 | scm_gen_putc ('\"', port); | |
314 | for (i = 0; i < SCM_ROLENGTH (exp); ++i) | |
315 | switch (SCM_ROCHARS (exp)[i]) | |
316 | { | |
317 | case '\"': | |
318 | case '\\': | |
319 | scm_gen_putc ('\\', port); | |
320 | default: | |
321 | scm_gen_putc (SCM_ROCHARS (exp)[i], port); | |
322 | } | |
323 | scm_gen_putc ('\"', port); | |
324 | break; | |
325 | } | |
326 | else | |
327 | scm_gen_write (scm_regular_string, SCM_ROCHARS (exp), | |
328 | (scm_sizet) SCM_ROLENGTH (exp), | |
329 | port); | |
330 | break; | |
331 | case scm_tcs_symbols: | |
332 | if (SCM_MB_STRINGP (exp)) | |
333 | { | |
334 | scm_print_mb_symbol (exp, port); | |
335 | break; | |
336 | } | |
337 | else | |
338 | { | |
339 | int pos; | |
340 | int end; | |
341 | int len; | |
342 | char * str; | |
343 | int weird; | |
344 | int maybe_weird; | |
345 | int mw_pos; | |
346 | ||
347 | len = SCM_LENGTH (exp); | |
348 | str = SCM_CHARS (exp); | |
349 | scm_remember (&exp); | |
350 | pos = 0; | |
351 | weird = 0; | |
352 | maybe_weird = 0; | |
353 | ||
354 | if (len == 0) | |
355 | scm_gen_write (scm_regular_string, "#{}#", 4, port); | |
356 | ||
357 | for (end = pos; end < len; ++end) | |
358 | switch (str[end]) | |
359 | { | |
360 | #ifdef BRACKETS_AS_PARENS | |
361 | case '[': | |
362 | case ']': | |
363 | #endif | |
364 | case '(': | |
365 | case ')': | |
366 | case '\"': | |
367 | case ';': | |
368 | case SCM_WHITE_SPACES: | |
369 | case SCM_LINE_INCREMENTORS: | |
370 | weird_handler: | |
371 | if (maybe_weird) | |
372 | { | |
373 | end = mw_pos; | |
374 | maybe_weird = 0; | |
375 | } | |
376 | if (!weird) | |
377 | { | |
378 | scm_gen_write (scm_regular_string, "#{", 2, port); | |
379 | weird = 1; | |
380 | } | |
381 | if (pos < end) | |
382 | { | |
383 | scm_gen_write (scm_regular_string, str + pos, end - pos, port); | |
384 | } | |
385 | { | |
386 | char buf[2]; | |
387 | buf[0] = '\\'; | |
388 | buf[1] = str[end]; | |
389 | scm_gen_write (scm_regular_string, buf, 2, port); | |
390 | } | |
391 | pos = end + 1; | |
392 | break; | |
393 | case '\\': | |
394 | if (weird) | |
395 | goto weird_handler; | |
396 | if (!maybe_weird) | |
397 | { | |
398 | maybe_weird = 1; | |
399 | mw_pos = pos; | |
400 | } | |
401 | break; | |
402 | case '}': | |
403 | case '#': | |
404 | if (weird) | |
405 | goto weird_handler; | |
406 | break; | |
407 | default: | |
408 | break; | |
409 | } | |
410 | if (pos < end) | |
411 | scm_gen_write (scm_regular_string, str + pos, end - pos, port); | |
412 | if (weird) | |
413 | scm_gen_write (scm_regular_string, "}#", 2, port); | |
414 | break; | |
415 | } | |
416 | case scm_tc7_wvect: | |
a51ea417 | 417 | PUSH_REF (pstack, exp, circref); |
0f2d19dd JB |
418 | if (SCM_IS_WHVEC (exp)) |
419 | scm_gen_puts (scm_regular_string, "#wh(", port); | |
420 | else | |
421 | scm_gen_puts (scm_regular_string, "#w(", port); | |
422 | goto common_vector_printer; | |
423 | ||
424 | case scm_tc7_vector: | |
a51ea417 | 425 | PUSH_REF (pstack, exp, circref); |
0f2d19dd JB |
426 | scm_gen_puts (scm_regular_string, "#(", port); |
427 | common_vector_printer: | |
428 | for (i = 0; i + 1 < SCM_LENGTH (exp); ++i) | |
429 | { | |
430 | /* CHECK_INTS; */ | |
431 | scm_iprin1 (SCM_VELTS (exp)[i], port, writing); | |
432 | scm_gen_putc (' ', port); | |
433 | } | |
434 | if (i < SCM_LENGTH (exp)) | |
435 | { | |
436 | /* CHECK_INTS; */ | |
437 | scm_iprin1 (SCM_VELTS (exp)[i], port, writing); | |
438 | } | |
439 | scm_gen_putc (')', port); | |
a51ea417 | 440 | POP_REF (pstack); |
0f2d19dd JB |
441 | break; |
442 | case scm_tc7_bvect: | |
443 | case scm_tc7_byvect: | |
444 | case scm_tc7_svect: | |
445 | case scm_tc7_ivect: | |
446 | case scm_tc7_uvect: | |
447 | case scm_tc7_fvect: | |
448 | case scm_tc7_dvect: | |
449 | case scm_tc7_cvect: | |
450 | #ifdef LONGLONGS | |
451 | case scm_tc7_llvect: | |
452 | #endif | |
453 | scm_raprin1 (exp, port, writing); | |
454 | break; | |
455 | case scm_tcs_subrs: | |
456 | scm_gen_puts (scm_regular_string, "#<primitive-procedure ", port); | |
457 | scm_gen_puts ((SCM_MB_STRINGP (SCM_SNAME(exp)) | |
458 | ? scm_mb_string | |
459 | : scm_regular_string), | |
460 | SCM_CHARS (SCM_SNAME (exp)), port); | |
461 | scm_gen_putc ('>', port); | |
462 | break; | |
463 | #ifdef CCLO | |
464 | case scm_tc7_cclo: | |
465 | scm_gen_puts (scm_regular_string, "#<compiled-closure ", port); | |
466 | scm_iprin1 (SCM_CCLO_SUBR (exp), port, writing); | |
467 | scm_gen_putc ('>', port); | |
468 | break; | |
469 | #endif | |
470 | case scm_tc7_contin: | |
471 | scm_gen_puts (scm_regular_string, "#<continuation ", port); | |
472 | scm_intprint (SCM_LENGTH (exp), 10, port); | |
473 | scm_gen_puts (scm_regular_string, " @ ", port); | |
474 | scm_intprint ((long) SCM_CHARS (exp), 16, port); | |
475 | scm_gen_putc ('>', port); | |
476 | break; | |
477 | case scm_tc7_port: | |
478 | i = SCM_PTOBNUM (exp); | |
479 | if (i < scm_numptob && scm_ptobs[i].print && (scm_ptobs[i].print) (exp, port, writing)) | |
480 | break; | |
481 | goto punk; | |
482 | case scm_tc7_smob: | |
a51ea417 | 483 | PUSH_REF (pstack, exp, circref); |
0f2d19dd JB |
484 | i = SCM_SMOBNUM (exp); |
485 | if (i < scm_numsmob && scm_smobs[i].print | |
486 | && (scm_smobs[i].print) (exp, port, writing)) | |
a51ea417 MD |
487 | { |
488 | POP_REF (pstack); | |
489 | break; | |
490 | } | |
491 | POP_REF (pstack); | |
0f2d19dd | 492 | default: |
a51ea417 MD |
493 | punk: |
494 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
495 | } |
496 | } | |
497 | } | |
498 | ||
a51ea417 MD |
499 | #ifdef __STDC__ |
500 | void | |
501 | scm_prin1 (SCM exp, SCM port, int writing) | |
502 | #else | |
503 | void | |
504 | scm_prin1 (exp, port, writing) | |
505 | SCM exp; | |
506 | SCM port; | |
507 | int writing; | |
508 | #endif | |
509 | { | |
510 | RESET_REF_STACK (pstack); | |
511 | scm_iprin1 (exp, port, writing); | |
512 | } | |
513 | ||
0f2d19dd JB |
514 | |
515 | /* Print an integer. | |
516 | */ | |
517 | #ifdef __STDC__ | |
518 | void | |
519 | scm_intprint (long n, int radix, SCM port) | |
520 | #else | |
521 | void | |
522 | scm_intprint (n, radix, port) | |
523 | long n; | |
524 | int radix; | |
525 | SCM port; | |
526 | #endif | |
527 | { | |
528 | char num_buf[SCM_INTBUFLEN]; | |
529 | scm_gen_write (scm_regular_string, num_buf, scm_iint2str (n, radix, num_buf), port); | |
530 | } | |
531 | ||
532 | /* Print an object of unrecognized type. | |
533 | */ | |
534 | #ifdef __STDC__ | |
535 | void | |
536 | scm_ipruk (char *hdr, SCM ptr, SCM port) | |
537 | #else | |
538 | void | |
539 | scm_ipruk (hdr, ptr, port) | |
540 | char *hdr; | |
541 | SCM ptr; | |
542 | SCM port; | |
543 | #endif | |
544 | { | |
545 | scm_gen_puts (scm_regular_string, "#<unknown-", port); | |
546 | scm_gen_puts (scm_regular_string, hdr, port); | |
547 | if (SCM_CELLP (ptr)) | |
548 | { | |
549 | scm_gen_puts (scm_regular_string, " (0x", port); | |
550 | scm_intprint (SCM_CAR (ptr), 16, port); | |
551 | scm_gen_puts (scm_regular_string, " . 0x", port); | |
552 | scm_intprint (SCM_CDR (ptr), 16, port); | |
553 | scm_gen_puts (scm_regular_string, ") @", port); | |
554 | } | |
555 | scm_gen_puts (scm_regular_string, " 0x", port); | |
556 | scm_intprint (ptr, 16, port); | |
557 | scm_gen_putc ('>', port); | |
558 | } | |
559 | ||
560 | /* Print a list. | |
561 | */ | |
a51ea417 MD |
562 | |
563 | static ref_stack lstack; | |
564 | ||
0f2d19dd JB |
565 | #ifdef __STDC__ |
566 | void | |
567 | scm_iprlist (char *hdr, SCM exp, char tlr, SCM port, int writing) | |
568 | #else | |
569 | void | |
570 | scm_iprlist (hdr, exp, tlr, port, writing) | |
571 | char *hdr; | |
572 | SCM exp; | |
573 | char tlr; | |
574 | SCM port; | |
575 | int writing; | |
576 | #endif | |
577 | { | |
578 | scm_gen_puts (scm_regular_string, hdr, port); | |
579 | /* CHECK_INTS; */ | |
580 | scm_iprin1 (SCM_CAR (exp), port, writing); | |
a51ea417 MD |
581 | RESET_REF_STACK (lstack); |
582 | PUSH_REF (lstack, exp, circref); | |
0f2d19dd JB |
583 | exp = SCM_CDR (exp); |
584 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
585 | { | |
586 | if (SCM_NECONSP (exp)) | |
587 | break; | |
a51ea417 | 588 | PUSH_REF (lstack, exp, circref); |
0f2d19dd JB |
589 | scm_gen_putc (' ', port); |
590 | /* CHECK_INTS; */ | |
591 | scm_iprin1 (SCM_CAR (exp), port, writing); | |
592 | } | |
593 | if (SCM_NNULLP (exp)) | |
594 | { | |
595 | scm_gen_puts (scm_regular_string, " . ", port); | |
596 | scm_iprin1 (exp, port, writing); | |
597 | } | |
a51ea417 | 598 | end: |
0f2d19dd | 599 | scm_gen_putc (tlr, port); |
a51ea417 MD |
600 | return; |
601 | circref: | |
602 | scm_gen_puts (scm_regular_string, " . #<circ ref>", port); | |
603 | goto end; | |
604 | } | |
605 | ||
606 | #ifdef __STDC__ | |
607 | void | |
608 | scm_prlist (char *hdr, SCM exp, char tlr, SCM port, int writing) | |
609 | #else | |
610 | void | |
611 | scm_prlist (hdr, exp, tlr, port, writing) | |
612 | char *hdr; | |
613 | SCM exp; | |
614 | char tlr; | |
615 | SCM port; | |
616 | int writing; | |
617 | #endif | |
618 | { | |
619 | RESET_REF_STACK (pstack); | |
620 | scm_iprlist (hdr, exp, tlr, port, writing); | |
0f2d19dd JB |
621 | } |
622 | ||
623 | \f | |
624 | ||
625 | SCM_PROC(s_write, "write", 1, 1, 0, scm_write); | |
626 | #ifdef __STDC__ | |
627 | SCM | |
628 | scm_write (SCM obj, SCM port) | |
629 | #else | |
630 | SCM | |
631 | scm_write (obj, port) | |
632 | SCM obj; | |
633 | SCM port; | |
634 | #endif | |
635 | { | |
636 | if (SCM_UNBNDP (port)) | |
637 | port = scm_cur_outp; | |
638 | else | |
639 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write); | |
a51ea417 | 640 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
641 | #ifdef HAVE_PIPE |
642 | # ifdef EPIPE | |
643 | if (EPIPE == errno) | |
644 | scm_close_port (port); | |
645 | # endif | |
646 | #endif | |
647 | return SCM_UNSPECIFIED; | |
648 | } | |
649 | ||
650 | ||
651 | SCM_PROC(s_display, "display", 1, 1, 0, scm_display); | |
652 | #ifdef __STDC__ | |
653 | SCM | |
654 | scm_display (SCM obj, SCM port) | |
655 | #else | |
656 | SCM | |
657 | scm_display (obj, port) | |
658 | SCM obj; | |
659 | SCM port; | |
660 | #endif | |
661 | { | |
662 | if (SCM_UNBNDP (port)) | |
663 | port = scm_cur_outp; | |
664 | else | |
665 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_display); | |
a51ea417 | 666 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
667 | #ifdef HAVE_PIPE |
668 | # ifdef EPIPE | |
669 | if (EPIPE == errno) | |
670 | scm_close_port (port); | |
671 | # endif | |
672 | #endif | |
673 | return SCM_UNSPECIFIED; | |
674 | } | |
675 | ||
676 | SCM_PROC(s_newline, "newline", 0, 1, 0, scm_newline); | |
677 | #ifdef __STDC__ | |
678 | SCM | |
679 | scm_newline(SCM port) | |
680 | #else | |
681 | SCM | |
682 | scm_newline (port) | |
683 | SCM port; | |
684 | #endif | |
685 | { | |
686 | if (SCM_UNBNDP (port)) | |
687 | port = scm_cur_outp; | |
688 | else | |
689 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_newline); | |
690 | scm_gen_putc ('\n', port); | |
691 | #ifdef HAVE_PIPE | |
692 | # ifdef EPIPE | |
693 | if (EPIPE == errno) | |
694 | scm_close_port (port); | |
695 | else | |
696 | # endif | |
697 | #endif | |
698 | if (port == scm_cur_outp) | |
699 | scm_fflush (port); | |
700 | return SCM_UNSPECIFIED; | |
701 | } | |
702 | ||
703 | SCM_PROC(s_write_char, "write-char", 1, 1, 0, scm_write_char); | |
704 | #ifdef __STDC__ | |
705 | SCM | |
706 | scm_write_char (SCM chr, SCM port) | |
707 | #else | |
708 | SCM | |
709 | scm_write_char (chr, port) | |
710 | SCM chr; | |
711 | SCM port; | |
712 | #endif | |
713 | { | |
714 | if (SCM_UNBNDP (port)) | |
715 | port = scm_cur_outp; | |
716 | else | |
717 | SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write_char); | |
718 | SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG1, s_write_char); | |
719 | scm_gen_putc ((int) SCM_ICHR (chr), port); | |
720 | #ifdef HAVE_PIPE | |
721 | # ifdef EPIPE | |
722 | if (EPIPE == errno) | |
723 | scm_close_port (port); | |
724 | # endif | |
725 | #endif | |
726 | return SCM_UNSPECIFIED; | |
727 | } | |
728 | ||
729 | ||
730 | \f | |
731 | ||
732 | #ifdef __STDC__ | |
733 | void | |
734 | scm_init_print (void) | |
735 | #else | |
736 | void | |
737 | scm_init_print () | |
738 | #endif | |
739 | { | |
e6e4c9af | 740 | #ifdef DEBUG_EXTENSIONS |
b7ff98dd | 741 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
a51ea417 MD |
742 | init_ref_stack (&pstack); |
743 | init_ref_stack (&lstack); | |
e6e4c9af | 744 | #endif |
0f2d19dd JB |
745 | #include "print.x" |
746 | } |