Commit | Line | Data |
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22a52da1 | 1 | /* Copyright (C) 1995-1999,2000,2001 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 | 41 | |
1bbd0b84 | 42 | |
0f2d19dd JB |
43 | \f |
44 | ||
e6e2e95a MD |
45 | #include <errno.h> |
46 | ||
a0599745 MD |
47 | #include "libguile/_scm.h" |
48 | #include "libguile/chars.h" | |
a002f1a2 | 49 | #include "libguile/continuations.h" |
a0599745 MD |
50 | #include "libguile/smob.h" |
51 | #include "libguile/eval.h" | |
52 | #include "libguile/macros.h" | |
53 | #include "libguile/procprop.h" | |
54 | #include "libguile/read.h" | |
55 | #include "libguile/weaks.h" | |
56 | #include "libguile/unif.h" | |
57 | #include "libguile/alist.h" | |
58 | #include "libguile/struct.h" | |
59 | #include "libguile/objects.h" | |
60 | #include "libguile/ports.h" | |
61 | #include "libguile/root.h" | |
62 | #include "libguile/strings.h" | |
63 | #include "libguile/strports.h" | |
64 | #include "libguile/vectors.h" | |
65 | ||
66 | #include "libguile/validate.h" | |
67 | #include "libguile/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 | 123 | "#@delay", |
24d1fde8 MV |
124 | "#@call-with-values", |
125 | ||
5623a9b4 | 126 | "#<unbound>" |
0f2d19dd JB |
127 | }; |
128 | ||
92c2555f | 129 | scm_t_option scm_print_opts[] = { |
726d810a DH |
130 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
131 | "Hook for printing closures (should handle macros as well)." }, | |
84f6a34a MD |
132 | { SCM_OPTION_BOOLEAN, "source", 0, |
133 | "Print closures with source." } | |
e6e4c9af MD |
134 | }; |
135 | ||
a1ec6916 | 136 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 137 | (SCM setting), |
71331188 | 138 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
139 | "this procedure directly, use the procedures\n" |
140 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
141 | "and @code{print-options}.") | |
1bbd0b84 | 142 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 143 | { |
a51ea417 | 144 | SCM ans = scm_options (setting, |
b7ff98dd MD |
145 | scm_print_opts, |
146 | SCM_N_PRINT_OPTIONS, | |
1bbd0b84 | 147 | FUNC_NAME); |
e6e4c9af MD |
148 | return ans; |
149 | } | |
1bbd0b84 | 150 | #undef FUNC_NAME |
e6e4c9af | 151 | |
0f2d19dd JB |
152 | \f |
153 | /* {Printing of Scheme Objects} | |
154 | */ | |
155 | ||
a51ea417 | 156 | /* Detection of circular references. |
c62fbfe1 MD |
157 | * |
158 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
159 | * time complexity (O (depth * N)), The printer code can be |
160 | * rewritten to be O(N). | |
a51ea417 | 161 | */ |
c62fbfe1 | 162 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 163 | do { \ |
c62fbfe1 MD |
164 | pstate->ref_stack[pstate->top++] = (obj); \ |
165 | if (pstate->top == pstate->ceiling) \ | |
166 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 167 | } while(0) |
a51ea417 | 168 | |
c62fbfe1 | 169 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 170 | do { \ |
5ca6dc39 | 171 | register unsigned long i; \ |
c62fbfe1 | 172 | for (i = 0; i < pstate->top; ++i) \ |
230d095f | 173 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
c62fbfe1 MD |
174 | goto label; \ |
175 | if (pstate->fancyp) \ | |
176 | { \ | |
177 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
178 | { \ | |
b7f3516f | 179 | scm_putc ('#', port); \ |
c62fbfe1 MD |
180 | return; \ |
181 | } \ | |
182 | } \ | |
183 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 184 | } while(0) |
a51ea417 | 185 | |
c62fbfe1 MD |
186 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
187 | ||
bb35f315 | 188 | SCM scm_print_state_vtable; |
c4f37e80 | 189 | |
bb35f315 | 190 | static SCM print_state_pool; |
c4f37e80 | 191 | |
f843a84c | 192 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 193 | |
3b3b36dd | 194 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 195 | (), |
5352393c MG |
196 | "Return the current-pstate -- the cadr of the\n" |
197 | "@code{print_state_pool}. @code{current-pstate} is only\n" | |
198 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 199 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 200 | { |
a0adfbf0 MD |
201 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
202 | return SCM_CADR (print_state_pool); | |
203 | else | |
0a284a4e | 204 | return SCM_BOOL_F; |
c62fbfe1 | 205 | } |
1bbd0b84 GB |
206 | #undef FUNC_NAME |
207 | ||
c62fbfe1 MD |
208 | #endif |
209 | ||
210 | #define PSTATE_SIZE 50L | |
211 | ||
698c0295 | 212 | static SCM |
1bbd0b84 | 213 | make_print_state (void) |
698c0295 MD |
214 | { |
215 | SCM print_state = scm_make_struct (SCM_CAR (print_state_pool), /* pstate type */ | |
bf685b6d | 216 | SCM_INUM0, |
698c0295 | 217 | SCM_EOL); |
bf685b6d | 218 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 219 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
bf685b6d | 220 | pstate->ref_stack = SCM_VELTS (pstate->ref_vect); |
b17004b8 | 221 | pstate->ceiling = SCM_VECTOR_LENGTH (pstate->ref_vect); |
698c0295 MD |
222 | return print_state; |
223 | } | |
1cc91f1b | 224 | |
c62fbfe1 MD |
225 | SCM |
226 | scm_make_print_state () | |
c62fbfe1 | 227 | { |
230d095f | 228 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
229 | |
230 | /* First try to allocate a print state from the pool */ | |
231 | SCM_DEFER_INTS; | |
a0adfbf0 | 232 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
698c0295 MD |
233 | { |
234 | answer = SCM_CADR (print_state_pool); | |
235 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
236 | } | |
237 | SCM_ALLOW_INTS; | |
238 | ||
230d095f | 239 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
c62fbfe1 | 240 | } |
a51ea417 | 241 | |
698c0295 | 242 | void |
6e8d25a6 | 243 | scm_free_print_state (SCM print_state) |
698c0295 MD |
244 | { |
245 | SCM handle; | |
246 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
247 | /* Cleanup before returning print state to pool. | |
248 | * It is better to do it here. Doing it in scm_prin1 | |
249 | * would cost more since that function is called much more | |
250 | * often. | |
251 | */ | |
252 | pstate->fancyp = 0; | |
bb35f315 | 253 | pstate->revealed = 0; |
698c0295 MD |
254 | SCM_NEWCELL (handle); |
255 | SCM_DEFER_INTS; | |
22a52da1 DH |
256 | SCM_SET_CELL_WORD_0 (handle, print_state); |
257 | SCM_SET_CELL_WORD_1 (handle, SCM_CDR (print_state_pool)); | |
698c0295 MD |
258 | SCM_SETCDR (print_state_pool, handle); |
259 | SCM_ALLOW_INTS; | |
260 | } | |
1cc91f1b | 261 | |
a51ea417 | 262 | static void |
1bbd0b84 | 263 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 264 | { |
b17004b8 DH |
265 | unsigned long int old_size = SCM_VECTOR_LENGTH (pstate->ref_vect); |
266 | SCM *old_elts = SCM_VELTS (pstate->ref_vect); | |
267 | unsigned long int new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 268 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
269 | SCM *new_elts = SCM_VELTS (new_vect); |
270 | unsigned long int i; | |
271 | ||
272 | for (i = 0; i != old_size; ++i) | |
273 | new_elts [i] = old_elts [i]; | |
274 | ||
275 | pstate->ref_vect = new_vect; | |
276 | pstate->ref_stack = new_elts; | |
bf685b6d | 277 | pstate->ceiling = new_size; |
a51ea417 MD |
278 | } |
279 | ||
1cc91f1b | 280 | |
a51ea417 | 281 | static void |
1bbd0b84 | 282 | print_circref (SCM port,scm_print_state *pstate,SCM ref) |
a51ea417 | 283 | { |
c014a02e ML |
284 | register long i; |
285 | long self = pstate->top - 1; | |
c62fbfe1 MD |
286 | i = pstate->top - 1; |
287 | if (SCM_CONSP (pstate->ref_stack[i])) | |
288 | { | |
289 | while (i > 0) | |
290 | { | |
291 | if (SCM_NCONSP (pstate->ref_stack[i - 1]) | |
230d095f DH |
292 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
293 | pstate->ref_stack[i])) | |
c62fbfe1 MD |
294 | break; |
295 | --i; | |
296 | } | |
297 | self = i; | |
298 | } | |
299 | for (i = pstate->top - 1; 1; --i) | |
230d095f | 300 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
c62fbfe1 | 301 | break; |
b7f3516f | 302 | scm_putc ('#', port); |
c62fbfe1 | 303 | scm_intprint (i - self, 10, port); |
b7f3516f | 304 | scm_putc ('#', port); |
a51ea417 MD |
305 | } |
306 | ||
6662998f MV |
307 | /* Print the name of a symbol. */ |
308 | ||
309 | void | |
310 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
311 | { | |
312 | size_t pos; | |
313 | size_t end; | |
314 | int weird; | |
315 | int maybe_weird; | |
316 | size_t mw_pos = 0; | |
317 | ||
318 | pos = 0; | |
319 | weird = 0; | |
320 | maybe_weird = 0; | |
321 | ||
322 | /* XXX - Lots of weird symbol names are missed, such as "12" or | |
323 | "'a". */ | |
324 | ||
325 | if (len == 0) | |
326 | scm_lfwrite ("#{}#", 4, port); | |
327 | else if (str[0] == '#' || str[0] == ':' || str[len-1] == ':') | |
328 | { | |
329 | scm_lfwrite ("#{", 2, port); | |
330 | weird = 1; | |
331 | } | |
332 | ||
333 | for (end = pos; end < len; ++end) | |
334 | switch (str[end]) | |
335 | { | |
336 | #ifdef BRACKETS_AS_PARENS | |
337 | case '[': | |
338 | case ']': | |
339 | #endif | |
340 | case '(': | |
341 | case ')': | |
342 | case '"': | |
343 | case ';': | |
344 | case SCM_WHITE_SPACES: | |
345 | case SCM_LINE_INCREMENTORS: | |
346 | weird_handler: | |
347 | if (maybe_weird) | |
348 | { | |
349 | end = mw_pos; | |
350 | maybe_weird = 0; | |
351 | } | |
352 | if (!weird) | |
353 | { | |
354 | scm_lfwrite ("#{", 2, port); | |
355 | weird = 1; | |
356 | } | |
357 | if (pos < end) | |
358 | { | |
359 | scm_lfwrite (str + pos, end - pos, port); | |
360 | } | |
361 | { | |
362 | char buf[2]; | |
363 | buf[0] = '\\'; | |
364 | buf[1] = str[end]; | |
365 | scm_lfwrite (buf, 2, port); | |
366 | } | |
367 | pos = end + 1; | |
368 | break; | |
369 | case '\\': | |
370 | if (weird) | |
371 | goto weird_handler; | |
372 | if (!maybe_weird) | |
373 | { | |
374 | maybe_weird = 1; | |
375 | mw_pos = pos; | |
376 | } | |
377 | break; | |
378 | case '}': | |
379 | case '#': | |
380 | if (weird) | |
381 | goto weird_handler; | |
382 | break; | |
383 | default: | |
384 | break; | |
385 | } | |
386 | if (pos < end) | |
387 | scm_lfwrite (str + pos, end - pos, port); | |
388 | if (weird) | |
389 | scm_lfwrite ("}#", 2, port); | |
390 | } | |
391 | ||
c62fbfe1 | 392 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 393 | */ |
8b840115 MD |
394 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
395 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 396 | |
0f2d19dd | 397 | void |
1bbd0b84 | 398 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 399 | { |
54778cd3 | 400 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 401 | { |
e34f941a DH |
402 | case scm_tc3_closure: |
403 | case scm_tc3_tc7_1: | |
404 | case scm_tc3_tc7_2: | |
405 | /* These tc3 tags should never occur in an immediate value. They are | |
406 | * only used in cell types of non-immediates, i. e. the value returned | |
407 | * by SCM_CELL_TYPE (exp) can use these tags. | |
408 | */ | |
409 | scm_ipruk ("immediate", exp, port); | |
410 | break; | |
411 | case scm_tc3_int_1: | |
412 | case scm_tc3_int_2: | |
0f2d19dd JB |
413 | scm_intprint (SCM_INUM (exp), 10, port); |
414 | break; | |
e34f941a | 415 | case scm_tc3_imm24: |
7866a09b | 416 | if (SCM_CHARP (exp)) |
0f2d19dd | 417 | { |
e34f941a | 418 | long i = SCM_CHAR (exp); |
5ca6dc39 | 419 | |
b7f3516f TT |
420 | if (SCM_WRITINGP (pstate)) |
421 | { | |
422 | scm_puts ("#\\", port); | |
423 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
424 | scm_puts (scm_charnames[i], port); | |
57b74422 GH |
425 | #ifndef EBCDIC |
426 | else if (i == '\177') | |
427 | scm_puts (scm_charnames[scm_n_charnames - 1], port); | |
428 | #endif | |
b7f3516f TT |
429 | else if (i < 0 || i > '\177') |
430 | scm_intprint (i, 8, port); | |
431 | else | |
432 | scm_putc (i, port); | |
433 | } | |
434 | else | |
435 | scm_putc (i, port); | |
0f2d19dd | 436 | } |
a51ea417 | 437 | else if (SCM_IFLAGP (exp) |
5ca6dc39 | 438 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
b7f3516f | 439 | scm_puts (SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
440 | else if (SCM_ILOCP (exp)) |
441 | { | |
b7f3516f | 442 | scm_puts ("#@", port); |
1be6b49c | 443 | scm_intprint ((long) SCM_IFRAME (exp), 10, port); |
b7f3516f | 444 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
1be6b49c | 445 | scm_intprint ((long) SCM_IDIST (exp), 10, port); |
0f2d19dd JB |
446 | } |
447 | else | |
e34f941a DH |
448 | { |
449 | /* unknown immediate value */ | |
450 | scm_ipruk ("immediate", exp, port); | |
451 | } | |
0f2d19dd | 452 | break; |
e34f941a | 453 | case scm_tc3_cons: |
0f2d19dd JB |
454 | switch (SCM_TYP7 (exp)) |
455 | { | |
904a077d MV |
456 | case scm_tcs_struct: |
457 | { | |
458 | ENTER_NESTED_DATA (pstate, exp, circref); | |
459 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
460 | { | |
461 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
462 | if (!print) | |
463 | goto print_struct; | |
464 | SCM_NEWSMOB (pwps, | |
465 | scm_tc16_port_with_ps, | |
466 | SCM_UNPACK (scm_cons (port, pstate->handle))); | |
467 | scm_call_generic_2 (print, exp, pwps); | |
468 | } | |
469 | else | |
470 | { | |
471 | print_struct: | |
472 | scm_print_struct (exp, port, pstate); | |
473 | } | |
474 | EXIT_NESTED_DATA (pstate); | |
475 | } | |
476 | break; | |
0f2d19dd JB |
477 | case scm_tcs_cons_imcar: |
478 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
479 | ENTER_NESTED_DATA (pstate, exp, circref); |
480 | scm_iprlist ("(", exp, ')', port, pstate); | |
481 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
482 | break; |
483 | circref: | |
c62fbfe1 | 484 | print_circref (port, pstate, exp); |
0f2d19dd JB |
485 | break; |
486 | case scm_tcs_closures: | |
bb35f315 MV |
487 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
488 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 489 | exp, port, pstate))) |
726d810a DH |
490 | { |
491 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
492 | scm_puts ("#<procedure", port); | |
493 | scm_putc (' ', port); | |
494 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
495 | scm_putc (' ', port); | |
496 | if (SCM_PRINT_SOURCE_P) | |
497 | { | |
498 | SCM env = SCM_ENV (exp); | |
499 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
500 | SCM src = scm_unmemocopy (SCM_CODE (exp), xenv); | |
501 | ENTER_NESTED_DATA (pstate, exp, circref); | |
502 | scm_iprin1 (src, port, pstate); | |
503 | EXIT_NESTED_DATA (pstate); | |
504 | } | |
505 | else | |
506 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 507 | scm_putc ('>', port); |
726d810a | 508 | } |
0f2d19dd | 509 | break; |
0f2d19dd JB |
510 | case scm_tc7_substring: |
511 | case scm_tc7_string: | |
c62fbfe1 | 512 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 513 | { |
1be6b49c | 514 | size_t i; |
5ca6dc39 | 515 | |
b7f3516f | 516 | scm_putc ('"', port); |
d1ca2c64 | 517 | for (i = 0; i < SCM_STRING_LENGTH (exp); ++i) |
34f0f2b8 | 518 | switch (SCM_STRING_CHARS (exp)[i]) |
0f2d19dd | 519 | { |
dbef8851 | 520 | case '"': |
0f2d19dd | 521 | case '\\': |
b7f3516f | 522 | scm_putc ('\\', port); |
0f2d19dd | 523 | default: |
34f0f2b8 | 524 | scm_putc (SCM_STRING_CHARS (exp)[i], port); |
0f2d19dd | 525 | } |
b7f3516f | 526 | scm_putc ('"', port); |
0f2d19dd JB |
527 | break; |
528 | } | |
529 | else | |
34f0f2b8 | 530 | scm_lfwrite (SCM_STRING_CHARS (exp), SCM_STRING_LENGTH (exp), port); |
0f2d19dd | 531 | break; |
28b06554 | 532 | case scm_tc7_symbol: |
6662998f MV |
533 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), |
534 | SCM_SYMBOL_LENGTH (exp), | |
535 | port); | |
536 | scm_remember_upto_here_1 (exp); | |
537 | break; | |
e5aca4b5 MV |
538 | case scm_tc7_variable: |
539 | scm_i_variable_print (exp, port, pstate); | |
540 | break; | |
0f2d19dd | 541 | case scm_tc7_wvect: |
c62fbfe1 | 542 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 543 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 544 | scm_puts ("#wh(", port); |
0f2d19dd | 545 | else |
b7f3516f | 546 | scm_puts ("#w(", port); |
0f2d19dd JB |
547 | goto common_vector_printer; |
548 | ||
549 | case scm_tc7_vector: | |
c62fbfe1 | 550 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 551 | scm_puts ("#(", port); |
0f2d19dd | 552 | common_vector_printer: |
9fbaf27c | 553 | { |
c014a02e ML |
554 | register long i; |
555 | long last = SCM_VECTOR_LENGTH (exp) - 1; | |
9fbaf27c | 556 | int cutp = 0; |
b17004b8 | 557 | if (pstate->fancyp && SCM_VECTOR_LENGTH (exp) > pstate->length) |
9fbaf27c MD |
558 | { |
559 | last = pstate->length - 1; | |
560 | cutp = 1; | |
561 | } | |
562 | for (i = 0; i < last; ++i) | |
563 | { | |
564 | /* CHECK_INTS; */ | |
565 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 566 | scm_putc (' ', port); |
9fbaf27c MD |
567 | } |
568 | if (i == last) | |
569 | { | |
570 | /* CHECK_INTS; */ | |
571 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
572 | } | |
573 | if (cutp) | |
b7f3516f TT |
574 | scm_puts (" ...", port); |
575 | scm_putc (')', port); | |
9fbaf27c | 576 | } |
c62fbfe1 | 577 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 578 | break; |
afe5177e | 579 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
580 | case scm_tc7_bvect: |
581 | case scm_tc7_byvect: | |
582 | case scm_tc7_svect: | |
583 | case scm_tc7_ivect: | |
584 | case scm_tc7_uvect: | |
585 | case scm_tc7_fvect: | |
586 | case scm_tc7_dvect: | |
587 | case scm_tc7_cvect: | |
5c11cc9d | 588 | #ifdef HAVE_LONG_LONGS |
0f2d19dd JB |
589 | case scm_tc7_llvect: |
590 | #endif | |
c62fbfe1 | 591 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 592 | break; |
afe5177e | 593 | #endif |
0f2d19dd | 594 | case scm_tcs_subrs: |
9de33deb MD |
595 | scm_puts (SCM_SUBR_GENERIC (exp) && *SCM_SUBR_GENERIC (exp) |
596 | ? "#<primitive-generic " | |
597 | : "#<primitive-procedure ", | |
598 | port); | |
a002f1a2 | 599 | scm_puts (SCM_SYMBOL_CHARS (SCM_SNAME (exp)), port); |
b7f3516f | 600 | scm_putc ('>', port); |
0f2d19dd JB |
601 | break; |
602 | #ifdef CCLO | |
603 | case scm_tc7_cclo: | |
56977059 MD |
604 | { |
605 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 606 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
607 | { |
608 | /* Print gsubrs as primitives */ | |
c180dfd3 | 609 | SCM name = scm_procedure_name (exp); |
56977059 MD |
610 | scm_puts ("#<primitive-procedure", port); |
611 | if (SCM_NFALSEP (name)) | |
612 | { | |
613 | scm_putc (' ', port); | |
a002f1a2 | 614 | scm_puts (SCM_SYMBOL_CHARS (name), port); |
56977059 MD |
615 | } |
616 | } | |
617 | else | |
618 | { | |
619 | scm_puts ("#<compiled-closure ", port); | |
620 | scm_iprin1 (proc, port, pstate); | |
621 | } | |
622 | scm_putc ('>', port); | |
623 | } | |
0f2d19dd JB |
624 | break; |
625 | #endif | |
c180dfd3 MD |
626 | case scm_tc7_pws: |
627 | scm_puts ("#<procedure-with-setter", port); | |
628 | { | |
629 | SCM name = scm_procedure_name (exp); | |
630 | if (SCM_NFALSEP (name)) | |
631 | { | |
632 | scm_putc (' ', port); | |
b24b5e13 | 633 | scm_display (name, port); |
c180dfd3 MD |
634 | } |
635 | } | |
636 | scm_putc ('>', port); | |
637 | break; | |
0f2d19dd | 638 | case scm_tc7_port: |
5ca6dc39 JB |
639 | { |
640 | register long i = SCM_PTOBNUM (exp); | |
641 | if (i < scm_numptob | |
642 | && scm_ptobs[i].print | |
643 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 644 | break; |
5ca6dc39 JB |
645 | goto punk; |
646 | } | |
647 | case scm_tc7_smob: | |
7a7f7c53 DH |
648 | ENTER_NESTED_DATA (pstate, exp, circref); |
649 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
650 | EXIT_NESTED_DATA (pstate); | |
651 | break; | |
0f2d19dd | 652 | default: |
a51ea417 MD |
653 | punk: |
654 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
655 | } |
656 | } | |
657 | } | |
658 | ||
c62fbfe1 MD |
659 | /* Print states are necessary for circular reference safe printing. |
660 | * They are also expensive to allocate. Therefore print states are | |
661 | * kept in a pool so that they can be reused. | |
662 | */ | |
1cc91f1b | 663 | |
bb35f315 MV |
664 | /* The PORT argument can also be a print-state/port pair, which will |
665 | * then be used instead of allocating a new print state. This is | |
666 | * useful for continuing a chain of print calls from Scheme. */ | |
667 | ||
a51ea417 | 668 | void |
1bbd0b84 | 669 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 670 | { |
c4f37e80 MV |
671 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
672 | SCM pstate_scm; | |
c62fbfe1 MD |
673 | scm_print_state *pstate; |
674 | ||
bb35f315 MV |
675 | /* If PORT is a print-state/port pair, use that. Else create a new |
676 | print-state. */ | |
c4f37e80 | 677 | |
0c95b57d | 678 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 679 | { |
52235e71 MD |
680 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
681 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
682 | } |
683 | else | |
c62fbfe1 | 684 | { |
c4f37e80 MV |
685 | /* First try to allocate a print state from the pool */ |
686 | SCM_DEFER_INTS; | |
687 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) | |
688 | { | |
689 | handle = SCM_CDR (print_state_pool); | |
690 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
691 | } | |
692 | SCM_ALLOW_INTS; | |
54778cd3 | 693 | if (SCM_FALSEP (handle)) |
c4f37e80 MV |
694 | handle = scm_cons (make_print_state (), SCM_EOL); |
695 | pstate_scm = SCM_CAR (handle); | |
c62fbfe1 | 696 | } |
c62fbfe1 | 697 | |
c4f37e80 | 698 | pstate = SCM_PRINT_STATE (pstate_scm); |
c62fbfe1 MD |
699 | pstate->writingp = writingp; |
700 | scm_iprin1 (exp, port, pstate); | |
701 | ||
bb35f315 MV |
702 | /* Return print state to pool if it has been created above and |
703 | hasn't escaped to Scheme. */ | |
704 | ||
54778cd3 | 705 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 MV |
706 | { |
707 | SCM_DEFER_INTS; | |
708 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
709 | SCM_SETCDR (print_state_pool, handle); | |
710 | SCM_ALLOW_INTS; | |
711 | } | |
a51ea417 MD |
712 | } |
713 | ||
0f2d19dd JB |
714 | |
715 | /* Print an integer. | |
716 | */ | |
1cc91f1b | 717 | |
0f2d19dd | 718 | void |
1bbd0b84 | 719 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
720 | { |
721 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 722 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
723 | } |
724 | ||
725 | /* Print an object of unrecognized type. | |
726 | */ | |
1cc91f1b | 727 | |
0f2d19dd | 728 | void |
1bbd0b84 | 729 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 730 | { |
b7f3516f TT |
731 | scm_puts ("#<unknown-", port); |
732 | scm_puts (hdr, port); | |
0f2d19dd JB |
733 | if (SCM_CELLP (ptr)) |
734 | { | |
b7f3516f | 735 | scm_puts (" (0x", port); |
54778cd3 | 736 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 737 | scm_puts (" . 0x", port); |
54778cd3 | 738 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 739 | scm_puts (") @", port); |
0f2d19dd | 740 | } |
b7f3516f | 741 | scm_puts (" 0x", port); |
54778cd3 | 742 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 743 | scm_putc ('>', port); |
0f2d19dd JB |
744 | } |
745 | ||
1cc91f1b | 746 | |
904a077d | 747 | /* Print a list. |
22a52da1 | 748 | */ |
0f2d19dd | 749 | void |
1bbd0b84 | 750 | scm_iprlist (char *hdr,SCM exp,int tlr,SCM port,scm_print_state *pstate) |
0f2d19dd | 751 | { |
c62fbfe1 | 752 | register SCM hare, tortoise; |
c014a02e | 753 | long floor = pstate->top - 2; |
b7f3516f | 754 | scm_puts (hdr, port); |
0f2d19dd | 755 | /* CHECK_INTS; */ |
c62fbfe1 MD |
756 | if (pstate->fancyp) |
757 | goto fancy_printing; | |
758 | ||
759 | /* Run a hare and tortoise so that total time complexity will be | |
760 | O(depth * N) instead of O(N^2). */ | |
761 | hare = SCM_CDR (exp); | |
762 | tortoise = exp; | |
904a077d | 763 | while (SCM_CONSP (hare)) |
c62fbfe1 | 764 | { |
54778cd3 | 765 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
766 | goto fancy_printing; |
767 | hare = SCM_CDR (hare); | |
904a077d | 768 | if (SCM_IMP (hare) || SCM_NCONSP (hare)) |
c62fbfe1 MD |
769 | break; |
770 | hare = SCM_CDR (hare); | |
771 | tortoise = SCM_CDR (tortoise); | |
772 | } | |
773 | ||
774 | /* No cdr cycles intrinsic to this list */ | |
775 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
904a077d | 776 | for (exp = SCM_CDR (exp); SCM_CONSP (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 777 | { |
c014a02e | 778 | register long i; |
5ca6dc39 | 779 | |
c62fbfe1 | 780 | for (i = floor; i >= 0; --i) |
230d095f | 781 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
782 | goto circref; |
783 | PUSH_REF (pstate, exp); | |
b7f3516f | 784 | scm_putc (' ', port); |
0f2d19dd | 785 | /* CHECK_INTS; */ |
c62fbfe1 | 786 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 787 | } |
22a52da1 | 788 | if (!SCM_NULLP (exp)) |
0f2d19dd | 789 | { |
b7f3516f | 790 | scm_puts (" . ", port); |
c62fbfe1 | 791 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 792 | } |
c62fbfe1 | 793 | |
a51ea417 | 794 | end: |
b7f3516f | 795 | scm_putc (tlr, port); |
c62fbfe1 | 796 | pstate->top = floor + 2; |
a51ea417 | 797 | return; |
c62fbfe1 MD |
798 | |
799 | fancy_printing: | |
800 | { | |
c014a02e | 801 | long n = pstate->length; |
c62fbfe1 MD |
802 | |
803 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
804 | exp = SCM_CDR (exp); --n; | |
904a077d | 805 | for (; SCM_CONSP (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 806 | { |
c014a02e | 807 | register unsigned long i; |
5ca6dc39 | 808 | |
c62fbfe1 | 809 | for (i = 0; i < pstate->top; ++i) |
230d095f | 810 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
811 | goto fancy_circref; |
812 | if (pstate->fancyp) | |
813 | { | |
814 | if (n == 0) | |
815 | { | |
b7f3516f | 816 | scm_puts (" ...", port); |
c62fbfe1 MD |
817 | goto skip_tail; |
818 | } | |
819 | else | |
820 | --n; | |
821 | } | |
822 | PUSH_REF(pstate, exp); | |
823 | ++pstate->list_offset; | |
b7f3516f | 824 | scm_putc (' ', port); |
c62fbfe1 MD |
825 | /* CHECK_INTS; */ |
826 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
827 | } | |
828 | } | |
829 | if (SCM_NNULLP (exp)) | |
830 | { | |
b7f3516f | 831 | scm_puts (" . ", port); |
c62fbfe1 MD |
832 | scm_iprin1 (exp, port, pstate); |
833 | } | |
834 | skip_tail: | |
835 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 836 | goto end; |
a51ea417 | 837 | |
c62fbfe1 MD |
838 | fancy_circref: |
839 | pstate->list_offset -= pstate->top - floor - 2; | |
840 | ||
841 | circref: | |
b7f3516f | 842 | scm_puts (" . ", port); |
c62fbfe1 MD |
843 | print_circref (port, pstate, exp); |
844 | goto end; | |
0f2d19dd JB |
845 | } |
846 | ||
847 | \f | |
848 | ||
bb35f315 MV |
849 | int |
850 | scm_valid_oport_value_p (SCM val) | |
851 | { | |
368cf54d GB |
852 | return (SCM_OPOUTPORTP (val) |
853 | || (SCM_PORT_WITH_PS_P (val) | |
854 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
855 | } |
856 | ||
8b840115 | 857 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 858 | |
0f2d19dd | 859 | SCM |
1bbd0b84 | 860 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
861 | { |
862 | if (SCM_UNBNDP (port)) | |
863 | port = scm_cur_outp; | |
3eb7e6ee JB |
864 | |
865 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 866 | |
a51ea417 | 867 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
868 | #ifdef HAVE_PIPE |
869 | # ifdef EPIPE | |
870 | if (EPIPE == errno) | |
871 | scm_close_port (port); | |
872 | # endif | |
873 | #endif | |
874 | return SCM_UNSPECIFIED; | |
875 | } | |
876 | ||
877 | ||
8b840115 | 878 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 879 | |
0f2d19dd | 880 | SCM |
1bbd0b84 | 881 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
882 | { |
883 | if (SCM_UNBNDP (port)) | |
884 | port = scm_cur_outp; | |
3eb7e6ee JB |
885 | |
886 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 887 | |
a51ea417 | 888 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
889 | #ifdef HAVE_PIPE |
890 | # ifdef EPIPE | |
891 | if (EPIPE == errno) | |
892 | scm_close_port (port); | |
893 | # endif | |
894 | #endif | |
895 | return SCM_UNSPECIFIED; | |
896 | } | |
897 | ||
70d63753 GB |
898 | |
899 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
900 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
901 | "Write @var{message} to @var{destination}, defaulting to\n" |
902 | "the current output port.\n" | |
903 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
904 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
905 | "the escapes are replaced with corresponding members of\n" | |
906 | "@var{ARGS}:\n" | |
907 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
908 | "using @code{write}.\n" | |
909 | "If @var{destination} is @code{#t}, then use the current output\n" | |
910 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
911 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
912 | #define FUNC_NAME s_scm_simple_format |
913 | { | |
914 | SCM answer = SCM_UNSPECIFIED; | |
915 | int fReturnString = 0; | |
916 | int writingp; | |
917 | char *start; | |
b24b5e13 | 918 | char *end; |
70d63753 GB |
919 | char *p; |
920 | ||
daba1a71 MD |
921 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
922 | { | |
923 | destination = scm_cur_outp; | |
924 | } | |
925 | else if (SCM_FALSEP (destination)) | |
926 | { | |
927 | fReturnString = 1; | |
928 | destination = scm_mkstrport (SCM_INUM0, | |
929 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
930 | SCM_OPN | SCM_WRTNG, | |
931 | FUNC_NAME); | |
932 | } | |
933 | else | |
934 | { | |
935 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
936 | destination = SCM_COERCE_OUTPORT (destination); | |
937 | } | |
938 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 939 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 940 | |
34f0f2b8 | 941 | start = SCM_STRING_CHARS (message); |
b24b5e13 DH |
942 | end = start + SCM_STRING_LENGTH (message); |
943 | for (p = start; p != end; ++p) | |
70d63753 GB |
944 | if (*p == '~') |
945 | { | |
b24b5e13 | 946 | if (++p == end) |
6662998f MV |
947 | break; |
948 | ||
949 | switch (*p) | |
950 | { | |
951 | case 'A': case 'a': | |
952 | writingp = 0; | |
953 | break; | |
954 | case 'S': case 's': | |
955 | writingp = 1; | |
956 | break; | |
957 | case '~': | |
958 | scm_lfwrite (start, p - start, destination); | |
959 | start = p + 1; | |
960 | continue; | |
961 | case '%': | |
962 | scm_newline (destination); | |
963 | start = p + 1; | |
964 | continue; | |
965 | default: | |
1afff620 KN |
966 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
967 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f MV |
968 | |
969 | } | |
70d63753 | 970 | |
6662998f MV |
971 | |
972 | if (!SCM_CONSP (args)) | |
1afff620 KN |
973 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
974 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f | 975 | |
70d63753 GB |
976 | scm_lfwrite (start, p - start - 1, destination); |
977 | scm_prin1 (SCM_CAR (args), destination, writingp); | |
978 | args = SCM_CDR (args); | |
979 | start = p + 1; | |
980 | } | |
6662998f | 981 | |
70d63753 | 982 | scm_lfwrite (start, p - start, destination); |
6662998f | 983 | if (args != SCM_EOL) |
1afff620 KN |
984 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
985 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
986 | |
987 | if (fReturnString) | |
988 | answer = scm_strport_to_string (destination); | |
989 | ||
daba1a71 | 990 | return scm_return_first (answer, message); |
70d63753 GB |
991 | } |
992 | #undef FUNC_NAME | |
993 | ||
994 | ||
3b3b36dd | 995 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 996 | (SCM port), |
eca65e90 | 997 | "Send a newline to @var{port}.") |
1bbd0b84 | 998 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
999 | { |
1000 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1001 | port = scm_cur_outp; |
3eb7e6ee | 1002 | |
3b3b36dd | 1003 | SCM_VALIDATE_OPORT_VALUE (1,port); |
bb35f315 | 1004 | |
0ef4ae82 | 1005 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1006 | return SCM_UNSPECIFIED; |
1007 | } | |
1bbd0b84 | 1008 | #undef FUNC_NAME |
0f2d19dd | 1009 | |
3b3b36dd | 1010 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1011 | (SCM chr, SCM port), |
eca65e90 | 1012 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1013 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1014 | { |
1015 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1016 | port = scm_cur_outp; |
3eb7e6ee | 1017 | |
7866a09b | 1018 | SCM_VALIDATE_CHAR (1,chr); |
3b3b36dd | 1019 | SCM_VALIDATE_OPORT_VALUE (2,port); |
bb35f315 | 1020 | |
7866a09b | 1021 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1022 | #ifdef HAVE_PIPE |
1023 | # ifdef EPIPE | |
1024 | if (EPIPE == errno) | |
1025 | scm_close_port (port); | |
1026 | # endif | |
1027 | #endif | |
1028 | return SCM_UNSPECIFIED; | |
1029 | } | |
1bbd0b84 | 1030 | #undef FUNC_NAME |
0f2d19dd | 1031 | |
0f2d19dd JB |
1032 | \f |
1033 | ||
bb35f315 | 1034 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1035 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1036 | * containing PORT and PSTATE. This object can be used as the port for | |
1037 | * display/write etc to continue the current print chain. The REVEALED | |
1038 | * field of PSTATE is set to true to indicate that the print state has | |
1039 | * escaped to Scheme and thus has to be freed by the GC. | |
1040 | */ | |
1041 | ||
92c2555f | 1042 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1043 | |
1044 | /* Print exactly as the port itself would */ | |
1045 | ||
1046 | static int | |
e841c3e0 | 1047 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1048 | { |
1049 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1050 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1051 | } | |
c4f37e80 MV |
1052 | |
1053 | SCM | |
1bbd0b84 | 1054 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1055 | { |
c19bc088 | 1056 | SCM pwps; |
bb35f315 | 1057 | SCM pair = scm_cons (port, pstate->handle); |
54778cd3 | 1058 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (pair)); |
bb35f315 | 1059 | pstate->revealed = 1; |
fdc28395 | 1060 | return scm_call_2 (proc, exp, pwps); |
c19bc088 MD |
1061 | } |
1062 | ||
a1ec6916 | 1063 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 2, 0, 0, |
1bbd0b84 | 1064 | (SCM port, SCM pstate), |
71331188 MG |
1065 | "Create a new port which behaves like @var{port}, but with an\n" |
1066 | "included print state @var{pstate}.") | |
1bbd0b84 | 1067 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 MD |
1068 | { |
1069 | SCM pwps; | |
3b3b36dd GB |
1070 | SCM_VALIDATE_OPORT_VALUE (1,port); |
1071 | SCM_VALIDATE_PRINTSTATE (2,pstate); | |
c19bc088 | 1072 | port = SCM_COERCE_OUTPORT (port); |
54778cd3 | 1073 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (scm_cons (port, pstate))); |
c19bc088 MD |
1074 | return pwps; |
1075 | } | |
1bbd0b84 | 1076 | #undef FUNC_NAME |
c19bc088 | 1077 | |
a1ec6916 | 1078 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1079 | (SCM port), |
71331188 MG |
1080 | "Return the print state of the port @var{port}. If @var{port}\n" |
1081 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1082 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1083 | { |
368cf54d GB |
1084 | if (SCM_PORT_WITH_PS_P (port)) |
1085 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1086 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1087 | return SCM_BOOL_F; |
276dd677 | 1088 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1089 | } |
1bbd0b84 | 1090 | #undef FUNC_NAME |
bb35f315 | 1091 | |
c4f37e80 | 1092 | \f |
1cc91f1b | 1093 | |
0f2d19dd JB |
1094 | void |
1095 | scm_init_print () | |
0f2d19dd | 1096 | { |
c19bc088 | 1097 | SCM vtable, layout, type; |
4bfdf158 | 1098 | |
b7ff98dd | 1099 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
3ce4544c | 1100 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
4bfdf158 | 1101 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
1afff620 | 1102 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
38ae064c | 1103 | scm_set_struct_vtable_name_x (type, scm_str2symbol ("print-state")); |
c62fbfe1 | 1104 | print_state_pool = scm_permanent_object (scm_cons (type, SCM_EOL)); |
c4f37e80 | 1105 | |
bb35f315 | 1106 | scm_print_state_vtable = type; |
c4f37e80 | 1107 | |
c19bc088 MD |
1108 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1109 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1110 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1111 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
c19bc088 | 1112 | |
8dc9439f | 1113 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 1114 | #include "libguile/print.x" |
8dc9439f | 1115 | #endif |
0f2d19dd | 1116 | } |
89e00824 ML |
1117 | |
1118 | /* | |
1119 | Local Variables: | |
1120 | c-file-style: "gnu" | |
1121 | End: | |
1122 | */ |