Commit | Line | Data |
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f2c9fcb0 | 1 | /* Copyright (C) 1995-1999, 2000 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> | |
a0599745 MD |
48 | #include "libguile/_scm.h" |
49 | #include "libguile/chars.h" | |
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 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 | |
5d46ebe3 MD |
155 | * time complexity (O (depth * N)), The printer code can be |
156 | * rewritten to be O(N). | |
a51ea417 | 157 | */ |
c62fbfe1 | 158 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 159 | do { \ |
c62fbfe1 MD |
160 | pstate->ref_stack[pstate->top++] = (obj); \ |
161 | if (pstate->top == pstate->ceiling) \ | |
162 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 163 | } while(0) |
a51ea417 | 164 | |
c62fbfe1 | 165 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 166 | do { \ |
5ca6dc39 | 167 | register unsigned long i; \ |
c62fbfe1 | 168 | for (i = 0; i < pstate->top; ++i) \ |
230d095f | 169 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
c62fbfe1 MD |
170 | goto label; \ |
171 | if (pstate->fancyp) \ | |
172 | { \ | |
173 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
174 | { \ | |
b7f3516f | 175 | scm_putc ('#', port); \ |
c62fbfe1 MD |
176 | return; \ |
177 | } \ | |
178 | } \ | |
179 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 180 | } while(0) |
a51ea417 | 181 | |
c62fbfe1 MD |
182 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
183 | ||
bb35f315 | 184 | SCM scm_print_state_vtable; |
c4f37e80 | 185 | |
bb35f315 | 186 | static SCM print_state_pool; |
c4f37e80 | 187 | |
f843a84c | 188 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 189 | |
3b3b36dd | 190 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 191 | (), |
b450f070 GB |
192 | "Return the current-pstate--the `cadr' of the print_state_pool.\n" |
193 | "`current-pstate' is only included in GUILE_DEBUG builds.") | |
1bbd0b84 | 194 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 195 | { |
a0adfbf0 MD |
196 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
197 | return SCM_CADR (print_state_pool); | |
198 | else | |
0a284a4e | 199 | return SCM_BOOL_F; |
c62fbfe1 | 200 | } |
1bbd0b84 GB |
201 | #undef FUNC_NAME |
202 | ||
c62fbfe1 MD |
203 | #endif |
204 | ||
205 | #define PSTATE_SIZE 50L | |
206 | ||
698c0295 | 207 | static SCM |
1bbd0b84 | 208 | make_print_state (void) |
698c0295 MD |
209 | { |
210 | SCM print_state = scm_make_struct (SCM_CAR (print_state_pool), /* pstate type */ | |
bf685b6d | 211 | SCM_INUM0, |
698c0295 | 212 | SCM_EOL); |
bf685b6d MD |
213 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
214 | pstate->ref_vect = scm_make_vector (SCM_MAKINUM (PSTATE_SIZE), | |
bf685b6d MD |
215 | SCM_UNDEFINED); |
216 | pstate->ref_stack = SCM_VELTS (pstate->ref_vect); | |
217 | pstate->ceiling = SCM_LENGTH (pstate->ref_vect); | |
698c0295 MD |
218 | return print_state; |
219 | } | |
1cc91f1b | 220 | |
c62fbfe1 MD |
221 | SCM |
222 | scm_make_print_state () | |
c62fbfe1 | 223 | { |
230d095f | 224 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
225 | |
226 | /* First try to allocate a print state from the pool */ | |
227 | SCM_DEFER_INTS; | |
a0adfbf0 | 228 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
698c0295 MD |
229 | { |
230 | answer = SCM_CADR (print_state_pool); | |
231 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
232 | } | |
233 | SCM_ALLOW_INTS; | |
234 | ||
230d095f | 235 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
c62fbfe1 | 236 | } |
a51ea417 | 237 | |
698c0295 | 238 | void |
6e8d25a6 | 239 | scm_free_print_state (SCM print_state) |
698c0295 MD |
240 | { |
241 | SCM handle; | |
242 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
243 | /* Cleanup before returning print state to pool. | |
244 | * It is better to do it here. Doing it in scm_prin1 | |
245 | * would cost more since that function is called much more | |
246 | * often. | |
247 | */ | |
248 | pstate->fancyp = 0; | |
bb35f315 | 249 | pstate->revealed = 0; |
698c0295 MD |
250 | SCM_NEWCELL (handle); |
251 | SCM_DEFER_INTS; | |
252 | SCM_SETCAR (handle, print_state); | |
253 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
254 | SCM_SETCDR (print_state_pool, handle); | |
255 | SCM_ALLOW_INTS; | |
256 | } | |
1cc91f1b | 257 | |
a51ea417 | 258 | static void |
1bbd0b84 | 259 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 260 | { |
bf685b6d MD |
261 | int new_size = 2 * pstate->ceiling; |
262 | scm_vector_set_length_x (pstate->ref_vect, SCM_MAKINUM (new_size)); | |
263 | pstate->ref_stack = SCM_VELTS (pstate->ref_vect); | |
264 | pstate->ceiling = new_size; | |
a51ea417 MD |
265 | } |
266 | ||
1cc91f1b | 267 | |
a51ea417 | 268 | static void |
1bbd0b84 | 269 | print_circref (SCM port,scm_print_state *pstate,SCM ref) |
a51ea417 | 270 | { |
c62fbfe1 MD |
271 | register int i; |
272 | int self = pstate->top - 1; | |
273 | i = pstate->top - 1; | |
274 | if (SCM_CONSP (pstate->ref_stack[i])) | |
275 | { | |
276 | while (i > 0) | |
277 | { | |
278 | if (SCM_NCONSP (pstate->ref_stack[i - 1]) | |
230d095f DH |
279 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
280 | pstate->ref_stack[i])) | |
c62fbfe1 MD |
281 | break; |
282 | --i; | |
283 | } | |
284 | self = i; | |
285 | } | |
286 | for (i = pstate->top - 1; 1; --i) | |
230d095f | 287 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
c62fbfe1 | 288 | break; |
b7f3516f | 289 | scm_putc ('#', port); |
c62fbfe1 | 290 | scm_intprint (i - self, 10, port); |
b7f3516f | 291 | scm_putc ('#', port); |
a51ea417 MD |
292 | } |
293 | ||
c62fbfe1 | 294 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 295 | */ |
8b840115 MD |
296 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
297 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 298 | |
0f2d19dd | 299 | void |
1bbd0b84 | 300 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 301 | { |
0f2d19dd | 302 | taloop: |
54778cd3 | 303 | switch (SCM_ITAG3 (exp)) |
0f2d19dd JB |
304 | { |
305 | case 2: | |
306 | case 6: | |
307 | scm_intprint (SCM_INUM (exp), 10, port); | |
308 | break; | |
309 | case 4: | |
7866a09b | 310 | if (SCM_CHARP (exp)) |
0f2d19dd | 311 | { |
5ca6dc39 JB |
312 | register long i; |
313 | ||
7866a09b | 314 | i = SCM_CHAR (exp); |
b7f3516f TT |
315 | if (SCM_WRITINGP (pstate)) |
316 | { | |
317 | scm_puts ("#\\", port); | |
318 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
319 | scm_puts (scm_charnames[i], port); | |
320 | else if (i < 0 || i > '\177') | |
321 | scm_intprint (i, 8, port); | |
322 | else | |
323 | scm_putc (i, port); | |
324 | } | |
325 | else | |
326 | scm_putc (i, port); | |
0f2d19dd | 327 | } |
a51ea417 | 328 | else if (SCM_IFLAGP (exp) |
5ca6dc39 | 329 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
b7f3516f | 330 | scm_puts (SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
331 | else if (SCM_ILOCP (exp)) |
332 | { | |
b7f3516f | 333 | scm_puts ("#@", port); |
230d095f | 334 | scm_intprint (SCM_IFRAME (exp), 10, port); |
b7f3516f | 335 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
230d095f | 336 | scm_intprint (SCM_IDIST (exp), 10, port); |
0f2d19dd JB |
337 | } |
338 | else | |
339 | goto idef; | |
340 | break; | |
341 | case 1: | |
342 | /* gloc */ | |
b7f3516f | 343 | scm_puts ("#@", port); |
998308d3 | 344 | exp = SCM_GLOC_SYM (exp); |
0f2d19dd JB |
345 | goto taloop; |
346 | default: | |
347 | idef: | |
348 | scm_ipruk ("immediate", exp, port); | |
349 | break; | |
350 | case 0: | |
351 | switch (SCM_TYP7 (exp)) | |
352 | { | |
353 | case scm_tcs_cons_gloc: | |
354 | ||
fee7ef83 | 355 | if (SCM_STRUCT_VTABLE_DATA (exp) [scm_vtable_index_vcell] == 0) |
0f2d19dd | 356 | { |
c4f37e80 | 357 | ENTER_NESTED_DATA (pstate, exp, circref); |
8b840115 MD |
358 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) |
359 | { | |
360 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
361 | if (!print) | |
362 | goto print_struct; | |
363 | SCM_NEWSMOB (pwps, | |
364 | scm_tc16_port_with_ps, | |
54778cd3 | 365 | SCM_UNPACK (scm_cons (port, pstate->handle))); |
8b840115 MD |
366 | scm_call_generic_2 (print, exp, pwps); |
367 | } | |
368 | else | |
369 | { | |
370 | print_struct: | |
371 | scm_print_struct (exp, port, pstate); | |
372 | } | |
c4f37e80 | 373 | EXIT_NESTED_DATA (pstate); |
0f2d19dd JB |
374 | break; |
375 | } | |
376 | ||
377 | case scm_tcs_cons_imcar: | |
378 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
379 | ENTER_NESTED_DATA (pstate, exp, circref); |
380 | scm_iprlist ("(", exp, ')', port, pstate); | |
381 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
382 | break; |
383 | circref: | |
c62fbfe1 | 384 | print_circref (port, pstate, exp); |
0f2d19dd | 385 | break; |
7332df66 | 386 | macros: |
80ea260c | 387 | if (!SCM_CLOSUREP (SCM_CDR (exp))) |
7332df66 | 388 | goto prinmacro; |
0f2d19dd | 389 | case scm_tcs_closures: |
7332df66 MD |
390 | /* The user supplied print closure procedure must handle |
391 | macro closures as well. */ | |
bb35f315 MV |
392 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
393 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 394 | exp, port, pstate))) |
bb35f315 | 395 | { |
ba031394 | 396 | SCM name, code, env; |
bb35f315 MV |
397 | if (SCM_TYP16 (exp) == scm_tc16_macro) |
398 | { | |
399 | /* Printing a macro. */ | |
400 | prinmacro: | |
401 | name = scm_macro_name (exp); | |
402 | if (!SCM_CLOSUREP (SCM_CDR (exp))) | |
403 | { | |
9e882eec | 404 | code = env = SCM_UNDEFINED; |
b7f3516f | 405 | scm_puts ("#<primitive-", port); |
bb35f315 MV |
406 | } |
407 | else | |
408 | { | |
409 | code = SCM_CODE (SCM_CDR (exp)); | |
ba031394 | 410 | env = SCM_ENV (SCM_CDR (exp)); |
b7f3516f | 411 | scm_puts ("#<", port); |
bb35f315 | 412 | } |
206d3de3 | 413 | if (SCM_CELL_WORD_0 (exp) & (3L << 16)) |
b7f3516f | 414 | scm_puts ("macro", port); |
bb35f315 | 415 | else |
b7f3516f | 416 | scm_puts ("syntax", port); |
206d3de3 | 417 | if (SCM_CELL_WORD_0 (exp) & (2L << 16)) |
b7f3516f | 418 | scm_putc ('!', port); |
bb35f315 MV |
419 | } |
420 | else | |
421 | { | |
422 | /* Printing a closure. */ | |
423 | name = scm_procedure_name (exp); | |
424 | code = SCM_CODE (exp); | |
ba031394 | 425 | env = SCM_ENV (exp); |
b7f3516f | 426 | scm_puts ("#<procedure", port); |
bb35f315 | 427 | } |
0c95b57d | 428 | if (SCM_ROSTRINGP (name)) |
bb35f315 | 429 | { |
b7f3516f TT |
430 | scm_putc (' ', port); |
431 | scm_puts (SCM_ROCHARS (name), port); | |
bb35f315 | 432 | } |
9e882eec | 433 | if (!SCM_UNBNDP (code)) |
bb35f315 | 434 | { |
ba031394 MD |
435 | if (SCM_PRINT_SOURCE_P) |
436 | { | |
437 | code = scm_unmemocopy (code, | |
438 | SCM_EXTEND_ENV (SCM_CAR (code), | |
439 | SCM_EOL, | |
440 | env)); | |
441 | ENTER_NESTED_DATA (pstate, exp, circref); | |
442 | scm_iprlist (" ", code, '>', port, pstate); | |
443 | EXIT_NESTED_DATA (pstate); | |
444 | } | |
445 | else | |
446 | { | |
447 | if (SCM_TYP16 (exp) != scm_tc16_macro) | |
448 | { | |
b7f3516f | 449 | scm_putc (' ', port); |
ba031394 MD |
450 | scm_iprin1 (SCM_CAR (code), port, pstate); |
451 | } | |
b7f3516f | 452 | scm_putc ('>', port); |
ba031394 | 453 | } |
bb35f315 MV |
454 | } |
455 | else | |
b7f3516f | 456 | scm_putc ('>', port); |
bb35f315 | 457 | } |
0f2d19dd | 458 | break; |
0f2d19dd JB |
459 | case scm_tc7_substring: |
460 | case scm_tc7_string: | |
c62fbfe1 | 461 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 462 | { |
5ca6dc39 JB |
463 | scm_sizet i; |
464 | ||
b7f3516f | 465 | scm_putc ('"', port); |
0f2d19dd JB |
466 | for (i = 0; i < SCM_ROLENGTH (exp); ++i) |
467 | switch (SCM_ROCHARS (exp)[i]) | |
468 | { | |
dbef8851 | 469 | case '"': |
0f2d19dd | 470 | case '\\': |
b7f3516f | 471 | scm_putc ('\\', port); |
0f2d19dd | 472 | default: |
b7f3516f | 473 | scm_putc (SCM_ROCHARS (exp)[i], port); |
0f2d19dd | 474 | } |
b7f3516f | 475 | scm_putc ('"', port); |
0f2d19dd JB |
476 | break; |
477 | } | |
478 | else | |
b7f3516f TT |
479 | scm_lfwrite (SCM_ROCHARS (exp), (scm_sizet) SCM_ROLENGTH (exp), |
480 | port); | |
0f2d19dd JB |
481 | break; |
482 | case scm_tcs_symbols: | |
0f2d19dd JB |
483 | { |
484 | int pos; | |
485 | int end; | |
486 | int len; | |
487 | char * str; | |
488 | int weird; | |
489 | int maybe_weird; | |
4dc2435a | 490 | int mw_pos = 0; |
0f2d19dd JB |
491 | |
492 | len = SCM_LENGTH (exp); | |
493 | str = SCM_CHARS (exp); | |
494 | scm_remember (&exp); | |
495 | pos = 0; | |
496 | weird = 0; | |
497 | maybe_weird = 0; | |
498 | ||
499 | if (len == 0) | |
b7f3516f | 500 | scm_lfwrite ("#{}#", 4, port); |
0f2d19dd JB |
501 | |
502 | for (end = pos; end < len; ++end) | |
503 | switch (str[end]) | |
504 | { | |
505 | #ifdef BRACKETS_AS_PARENS | |
506 | case '[': | |
507 | case ']': | |
508 | #endif | |
509 | case '(': | |
510 | case ')': | |
dbef8851 | 511 | case '"': |
0f2d19dd JB |
512 | case ';': |
513 | case SCM_WHITE_SPACES: | |
514 | case SCM_LINE_INCREMENTORS: | |
515 | weird_handler: | |
516 | if (maybe_weird) | |
517 | { | |
518 | end = mw_pos; | |
519 | maybe_weird = 0; | |
520 | } | |
521 | if (!weird) | |
522 | { | |
b7f3516f | 523 | scm_lfwrite ("#{", 2, port); |
0f2d19dd JB |
524 | weird = 1; |
525 | } | |
526 | if (pos < end) | |
527 | { | |
b7f3516f | 528 | scm_lfwrite (str + pos, end - pos, port); |
0f2d19dd JB |
529 | } |
530 | { | |
531 | char buf[2]; | |
532 | buf[0] = '\\'; | |
533 | buf[1] = str[end]; | |
b7f3516f | 534 | scm_lfwrite (buf, 2, port); |
0f2d19dd JB |
535 | } |
536 | pos = end + 1; | |
537 | break; | |
538 | case '\\': | |
539 | if (weird) | |
540 | goto weird_handler; | |
541 | if (!maybe_weird) | |
542 | { | |
543 | maybe_weird = 1; | |
544 | mw_pos = pos; | |
545 | } | |
546 | break; | |
547 | case '}': | |
548 | case '#': | |
549 | if (weird) | |
550 | goto weird_handler; | |
551 | break; | |
552 | default: | |
553 | break; | |
554 | } | |
555 | if (pos < end) | |
b7f3516f | 556 | scm_lfwrite (str + pos, end - pos, port); |
0f2d19dd | 557 | if (weird) |
b7f3516f | 558 | scm_lfwrite ("}#", 2, port); |
0f2d19dd JB |
559 | break; |
560 | } | |
561 | case scm_tc7_wvect: | |
c62fbfe1 | 562 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 563 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 564 | scm_puts ("#wh(", port); |
0f2d19dd | 565 | else |
b7f3516f | 566 | scm_puts ("#w(", port); |
0f2d19dd JB |
567 | goto common_vector_printer; |
568 | ||
569 | case scm_tc7_vector: | |
c62fbfe1 | 570 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 571 | scm_puts ("#(", port); |
0f2d19dd | 572 | common_vector_printer: |
9fbaf27c | 573 | { |
5ca6dc39 | 574 | register long i; |
9fbaf27c MD |
575 | int last = SCM_LENGTH (exp) - 1; |
576 | int cutp = 0; | |
577 | if (pstate->fancyp && SCM_LENGTH (exp) > pstate->length) | |
578 | { | |
579 | last = pstate->length - 1; | |
580 | cutp = 1; | |
581 | } | |
582 | for (i = 0; i < last; ++i) | |
583 | { | |
584 | /* CHECK_INTS; */ | |
585 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 586 | scm_putc (' ', port); |
9fbaf27c MD |
587 | } |
588 | if (i == last) | |
589 | { | |
590 | /* CHECK_INTS; */ | |
591 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
592 | } | |
593 | if (cutp) | |
b7f3516f TT |
594 | scm_puts (" ...", port); |
595 | scm_putc (')', port); | |
9fbaf27c | 596 | } |
c62fbfe1 | 597 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 598 | break; |
afe5177e | 599 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
600 | case scm_tc7_bvect: |
601 | case scm_tc7_byvect: | |
602 | case scm_tc7_svect: | |
603 | case scm_tc7_ivect: | |
604 | case scm_tc7_uvect: | |
605 | case scm_tc7_fvect: | |
606 | case scm_tc7_dvect: | |
607 | case scm_tc7_cvect: | |
5c11cc9d | 608 | #ifdef HAVE_LONG_LONGS |
0f2d19dd JB |
609 | case scm_tc7_llvect: |
610 | #endif | |
c62fbfe1 | 611 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 612 | break; |
afe5177e | 613 | #endif |
0f2d19dd | 614 | case scm_tcs_subrs: |
9de33deb MD |
615 | scm_puts (SCM_SUBR_GENERIC (exp) && *SCM_SUBR_GENERIC (exp) |
616 | ? "#<primitive-generic " | |
617 | : "#<primitive-procedure ", | |
618 | port); | |
b7f3516f TT |
619 | scm_puts (SCM_CHARS (SCM_SNAME (exp)), port); |
620 | scm_putc ('>', port); | |
0f2d19dd JB |
621 | break; |
622 | #ifdef CCLO | |
623 | case scm_tc7_cclo: | |
56977059 MD |
624 | { |
625 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 626 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
627 | { |
628 | /* Print gsubrs as primitives */ | |
c180dfd3 | 629 | SCM name = scm_procedure_name (exp); |
56977059 MD |
630 | scm_puts ("#<primitive-procedure", port); |
631 | if (SCM_NFALSEP (name)) | |
632 | { | |
633 | scm_putc (' ', port); | |
634 | scm_puts (SCM_CHARS (name), port); | |
635 | } | |
636 | } | |
637 | else | |
638 | { | |
639 | scm_puts ("#<compiled-closure ", port); | |
640 | scm_iprin1 (proc, port, pstate); | |
641 | } | |
642 | scm_putc ('>', port); | |
643 | } | |
0f2d19dd JB |
644 | break; |
645 | #endif | |
c180dfd3 MD |
646 | case scm_tc7_pws: |
647 | scm_puts ("#<procedure-with-setter", port); | |
648 | { | |
649 | SCM name = scm_procedure_name (exp); | |
650 | if (SCM_NFALSEP (name)) | |
651 | { | |
652 | scm_putc (' ', port); | |
653 | scm_puts (SCM_ROCHARS (name), port); | |
654 | } | |
655 | } | |
656 | scm_putc ('>', port); | |
657 | break; | |
0f2d19dd | 658 | case scm_tc7_contin: |
b7f3516f | 659 | scm_puts ("#<continuation ", port); |
0f2d19dd | 660 | scm_intprint (SCM_LENGTH (exp), 10, port); |
b7f3516f | 661 | scm_puts (" @ ", port); |
0f2d19dd | 662 | scm_intprint ((long) SCM_CHARS (exp), 16, port); |
b7f3516f | 663 | scm_putc ('>', port); |
0f2d19dd JB |
664 | break; |
665 | case scm_tc7_port: | |
5ca6dc39 JB |
666 | { |
667 | register long i = SCM_PTOBNUM (exp); | |
668 | if (i < scm_numptob | |
669 | && scm_ptobs[i].print | |
670 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 671 | break; |
5ca6dc39 JB |
672 | goto punk; |
673 | } | |
674 | case scm_tc7_smob: | |
675 | { | |
676 | register long i; | |
677 | ENTER_NESTED_DATA (pstate, exp, circref); | |
678 | i = SCM_SMOBNUM (exp); | |
679 | if (i < scm_numsmob && scm_smobs[i].print | |
680 | && (scm_smobs[i].print) (exp, port, pstate)) | |
681 | { | |
682 | EXIT_NESTED_DATA (pstate); | |
683 | break; | |
684 | } | |
685 | EXIT_NESTED_DATA (pstate); | |
686 | /* Macros have their print field set to NULL. They are | |
687 | handled at the same place as closures in order to achieve | |
688 | non-redundancy. Placing the condition here won't slow | |
689 | down printing of other smobs. */ | |
690 | if (SCM_TYP16 (exp) == scm_tc16_macro) | |
691 | goto macros; | |
692 | } | |
0f2d19dd | 693 | default: |
a51ea417 MD |
694 | punk: |
695 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
696 | } |
697 | } | |
698 | } | |
699 | ||
c62fbfe1 MD |
700 | /* Print states are necessary for circular reference safe printing. |
701 | * They are also expensive to allocate. Therefore print states are | |
702 | * kept in a pool so that they can be reused. | |
703 | */ | |
1cc91f1b | 704 | |
bb35f315 MV |
705 | /* The PORT argument can also be a print-state/port pair, which will |
706 | * then be used instead of allocating a new print state. This is | |
707 | * useful for continuing a chain of print calls from Scheme. */ | |
708 | ||
a51ea417 | 709 | void |
1bbd0b84 | 710 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 711 | { |
c4f37e80 MV |
712 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
713 | SCM pstate_scm; | |
c62fbfe1 MD |
714 | scm_print_state *pstate; |
715 | ||
bb35f315 MV |
716 | /* If PORT is a print-state/port pair, use that. Else create a new |
717 | print-state. */ | |
c4f37e80 | 718 | |
0c95b57d | 719 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 720 | { |
52235e71 MD |
721 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
722 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
723 | } |
724 | else | |
c62fbfe1 | 725 | { |
c4f37e80 MV |
726 | /* First try to allocate a print state from the pool */ |
727 | SCM_DEFER_INTS; | |
728 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) | |
729 | { | |
730 | handle = SCM_CDR (print_state_pool); | |
731 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
732 | } | |
733 | SCM_ALLOW_INTS; | |
54778cd3 | 734 | if (SCM_FALSEP (handle)) |
c4f37e80 MV |
735 | handle = scm_cons (make_print_state (), SCM_EOL); |
736 | pstate_scm = SCM_CAR (handle); | |
c62fbfe1 | 737 | } |
c62fbfe1 | 738 | |
c4f37e80 | 739 | pstate = SCM_PRINT_STATE (pstate_scm); |
c62fbfe1 MD |
740 | pstate->writingp = writingp; |
741 | scm_iprin1 (exp, port, pstate); | |
742 | ||
bb35f315 MV |
743 | /* Return print state to pool if it has been created above and |
744 | hasn't escaped to Scheme. */ | |
745 | ||
54778cd3 | 746 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 MV |
747 | { |
748 | SCM_DEFER_INTS; | |
749 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
750 | SCM_SETCDR (print_state_pool, handle); | |
751 | SCM_ALLOW_INTS; | |
752 | } | |
a51ea417 MD |
753 | } |
754 | ||
0f2d19dd JB |
755 | |
756 | /* Print an integer. | |
757 | */ | |
1cc91f1b | 758 | |
0f2d19dd | 759 | void |
1bbd0b84 | 760 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
761 | { |
762 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 763 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
764 | } |
765 | ||
766 | /* Print an object of unrecognized type. | |
767 | */ | |
1cc91f1b | 768 | |
0f2d19dd | 769 | void |
1bbd0b84 | 770 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 771 | { |
b7f3516f TT |
772 | scm_puts ("#<unknown-", port); |
773 | scm_puts (hdr, port); | |
0f2d19dd JB |
774 | if (SCM_CELLP (ptr)) |
775 | { | |
b7f3516f | 776 | scm_puts (" (0x", port); |
54778cd3 | 777 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 778 | scm_puts (" . 0x", port); |
54778cd3 | 779 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 780 | scm_puts (") @", port); |
0f2d19dd | 781 | } |
b7f3516f | 782 | scm_puts (" 0x", port); |
54778cd3 | 783 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 784 | scm_putc ('>', port); |
0f2d19dd JB |
785 | } |
786 | ||
787 | /* Print a list. | |
788 | */ | |
a51ea417 | 789 | |
1cc91f1b | 790 | |
0f2d19dd | 791 | void |
1bbd0b84 | 792 | scm_iprlist (char *hdr,SCM exp,int tlr,SCM port,scm_print_state *pstate) |
0f2d19dd | 793 | { |
c62fbfe1 MD |
794 | register SCM hare, tortoise; |
795 | int floor = pstate->top - 2; | |
b7f3516f | 796 | scm_puts (hdr, port); |
0f2d19dd | 797 | /* CHECK_INTS; */ |
c62fbfe1 MD |
798 | if (pstate->fancyp) |
799 | goto fancy_printing; | |
800 | ||
801 | /* Run a hare and tortoise so that total time complexity will be | |
802 | O(depth * N) instead of O(N^2). */ | |
803 | hare = SCM_CDR (exp); | |
804 | tortoise = exp; | |
0c95b57d | 805 | while (SCM_ECONSP (hare)) |
c62fbfe1 | 806 | { |
54778cd3 | 807 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
808 | goto fancy_printing; |
809 | hare = SCM_CDR (hare); | |
2fab3faa | 810 | if (SCM_IMP (hare) || SCM_NECONSP (hare)) |
c62fbfe1 MD |
811 | break; |
812 | hare = SCM_CDR (hare); | |
813 | tortoise = SCM_CDR (tortoise); | |
814 | } | |
815 | ||
816 | /* No cdr cycles intrinsic to this list */ | |
817 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
0f2d19dd JB |
818 | exp = SCM_CDR (exp); |
819 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
820 | { | |
5ca6dc39 JB |
821 | register int i; |
822 | ||
0f2d19dd JB |
823 | if (SCM_NECONSP (exp)) |
824 | break; | |
c62fbfe1 | 825 | for (i = floor; i >= 0; --i) |
230d095f | 826 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
827 | goto circref; |
828 | PUSH_REF (pstate, exp); | |
b7f3516f | 829 | scm_putc (' ', port); |
0f2d19dd | 830 | /* CHECK_INTS; */ |
c62fbfe1 | 831 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd JB |
832 | } |
833 | if (SCM_NNULLP (exp)) | |
834 | { | |
b7f3516f | 835 | scm_puts (" . ", port); |
c62fbfe1 | 836 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 837 | } |
c62fbfe1 | 838 | |
a51ea417 | 839 | end: |
b7f3516f | 840 | scm_putc (tlr, port); |
c62fbfe1 | 841 | pstate->top = floor + 2; |
a51ea417 | 842 | return; |
c62fbfe1 MD |
843 | |
844 | fancy_printing: | |
845 | { | |
846 | int n = pstate->length; | |
847 | ||
848 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
849 | exp = SCM_CDR (exp); --n; | |
850 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
851 | { | |
5ca6dc39 JB |
852 | register unsigned long i; |
853 | ||
c62fbfe1 MD |
854 | if (SCM_NECONSP (exp)) |
855 | break; | |
856 | for (i = 0; i < pstate->top; ++i) | |
230d095f | 857 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
858 | goto fancy_circref; |
859 | if (pstate->fancyp) | |
860 | { | |
861 | if (n == 0) | |
862 | { | |
b7f3516f | 863 | scm_puts (" ...", port); |
c62fbfe1 MD |
864 | goto skip_tail; |
865 | } | |
866 | else | |
867 | --n; | |
868 | } | |
869 | PUSH_REF(pstate, exp); | |
870 | ++pstate->list_offset; | |
b7f3516f | 871 | scm_putc (' ', port); |
c62fbfe1 MD |
872 | /* CHECK_INTS; */ |
873 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
874 | } | |
875 | } | |
876 | if (SCM_NNULLP (exp)) | |
877 | { | |
b7f3516f | 878 | scm_puts (" . ", port); |
c62fbfe1 MD |
879 | scm_iprin1 (exp, port, pstate); |
880 | } | |
881 | skip_tail: | |
882 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 883 | goto end; |
a51ea417 | 884 | |
c62fbfe1 MD |
885 | fancy_circref: |
886 | pstate->list_offset -= pstate->top - floor - 2; | |
887 | ||
888 | circref: | |
b7f3516f | 889 | scm_puts (" . ", port); |
c62fbfe1 MD |
890 | print_circref (port, pstate, exp); |
891 | goto end; | |
0f2d19dd JB |
892 | } |
893 | ||
894 | \f | |
895 | ||
bb35f315 MV |
896 | int |
897 | scm_valid_oport_value_p (SCM val) | |
898 | { | |
368cf54d GB |
899 | return (SCM_OPOUTPORTP (val) |
900 | || (SCM_PORT_WITH_PS_P (val) | |
901 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
902 | } |
903 | ||
8b840115 | 904 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 905 | |
0f2d19dd | 906 | SCM |
1bbd0b84 | 907 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
908 | { |
909 | if (SCM_UNBNDP (port)) | |
910 | port = scm_cur_outp; | |
3eb7e6ee JB |
911 | |
912 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 913 | |
a51ea417 | 914 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
915 | #ifdef HAVE_PIPE |
916 | # ifdef EPIPE | |
917 | if (EPIPE == errno) | |
918 | scm_close_port (port); | |
919 | # endif | |
920 | #endif | |
921 | return SCM_UNSPECIFIED; | |
922 | } | |
923 | ||
924 | ||
8b840115 | 925 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 926 | |
0f2d19dd | 927 | SCM |
1bbd0b84 | 928 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
929 | { |
930 | if (SCM_UNBNDP (port)) | |
931 | port = scm_cur_outp; | |
3eb7e6ee JB |
932 | |
933 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 934 | |
a51ea417 | 935 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
936 | #ifdef HAVE_PIPE |
937 | # ifdef EPIPE | |
938 | if (EPIPE == errno) | |
939 | scm_close_port (port); | |
940 | # endif | |
941 | #endif | |
942 | return SCM_UNSPECIFIED; | |
943 | } | |
944 | ||
70d63753 GB |
945 | |
946 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
947 | (SCM destination, SCM message, SCM args), | |
b380b885 MD |
948 | "Write MESSAGE to DESTINATION, defaulting to `current-output-port'.\n" |
949 | "MESSAGE can contain ~A (was %s) and ~S (was %S) escapes. When printed,\n" | |
950 | "the escapes are replaced with corresponding members of ARGS:\n" | |
951 | "~A formats using `display' and ~S formats using `write'.\n" | |
952 | "If DESTINATION is #t, then use the `current-output-port',\n" | |
953 | "if DESTINATION is #f, then return a string containing the formatted text.\n" | |
954 | "Does not add a trailing newline.") | |
70d63753 GB |
955 | #define FUNC_NAME s_scm_simple_format |
956 | { | |
957 | SCM answer = SCM_UNSPECIFIED; | |
958 | int fReturnString = 0; | |
959 | int writingp; | |
960 | char *start; | |
961 | char *p; | |
962 | ||
daba1a71 MD |
963 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
964 | { | |
965 | destination = scm_cur_outp; | |
966 | } | |
967 | else if (SCM_FALSEP (destination)) | |
968 | { | |
969 | fReturnString = 1; | |
970 | destination = scm_mkstrport (SCM_INUM0, | |
971 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
972 | SCM_OPN | SCM_WRTNG, | |
973 | FUNC_NAME); | |
974 | } | |
975 | else | |
976 | { | |
977 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
978 | destination = SCM_COERCE_OUTPORT (destination); | |
979 | } | |
980 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 981 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 982 | |
70d63753 GB |
983 | start = SCM_ROCHARS (message); |
984 | for (p = start; *p != '\0'; ++p) | |
985 | if (*p == '~') | |
986 | { | |
987 | if (SCM_IMP (args) || SCM_NCONSP (args)) | |
988 | continue; | |
989 | ||
990 | ++p; | |
cc6f0237 | 991 | if (*p == 'A' || *p == 'a') |
70d63753 | 992 | writingp = 0; |
cc6f0237 | 993 | else if (*p == 'S' || *p == 's') |
70d63753 GB |
994 | writingp = 1; |
995 | else | |
996 | continue; | |
997 | ||
998 | scm_lfwrite (start, p - start - 1, destination); | |
999 | scm_prin1 (SCM_CAR (args), destination, writingp); | |
1000 | args = SCM_CDR (args); | |
1001 | start = p + 1; | |
1002 | } | |
1003 | scm_lfwrite (start, p - start, destination); | |
1004 | ||
1005 | if (fReturnString) | |
1006 | answer = scm_strport_to_string (destination); | |
1007 | ||
daba1a71 | 1008 | return scm_return_first (answer, message); |
70d63753 GB |
1009 | } |
1010 | #undef FUNC_NAME | |
1011 | ||
1012 | ||
3b3b36dd | 1013 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 GB |
1014 | (SCM port), |
1015 | "Send a newline to PORT.") | |
1bbd0b84 | 1016 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1017 | { |
1018 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1019 | port = scm_cur_outp; |
3eb7e6ee | 1020 | |
3b3b36dd | 1021 | SCM_VALIDATE_OPORT_VALUE (1,port); |
bb35f315 | 1022 | |
0ef4ae82 | 1023 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1024 | return SCM_UNSPECIFIED; |
1025 | } | |
1bbd0b84 | 1026 | #undef FUNC_NAME |
0f2d19dd | 1027 | |
3b3b36dd | 1028 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 GB |
1029 | (SCM chr, SCM port), |
1030 | "Send character CHR to PORT.") | |
1bbd0b84 | 1031 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1032 | { |
1033 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1034 | port = scm_cur_outp; |
3eb7e6ee | 1035 | |
7866a09b | 1036 | SCM_VALIDATE_CHAR (1,chr); |
3b3b36dd | 1037 | SCM_VALIDATE_OPORT_VALUE (2,port); |
bb35f315 | 1038 | |
7866a09b | 1039 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1040 | #ifdef HAVE_PIPE |
1041 | # ifdef EPIPE | |
1042 | if (EPIPE == errno) | |
1043 | scm_close_port (port); | |
1044 | # endif | |
1045 | #endif | |
1046 | return SCM_UNSPECIFIED; | |
1047 | } | |
1bbd0b84 | 1048 | #undef FUNC_NAME |
0f2d19dd | 1049 | |
0f2d19dd JB |
1050 | \f |
1051 | ||
bb35f315 | 1052 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1053 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1054 | * containing PORT and PSTATE. This object can be used as the port for | |
1055 | * display/write etc to continue the current print chain. The REVEALED | |
1056 | * field of PSTATE is set to true to indicate that the print state has | |
1057 | * escaped to Scheme and thus has to be freed by the GC. | |
1058 | */ | |
1059 | ||
1060 | long scm_tc16_port_with_ps; | |
1061 | ||
1062 | /* Print exactly as the port itself would */ | |
1063 | ||
1064 | static int | |
1065 | print_port_with_ps (SCM obj, SCM port, scm_print_state *pstate) | |
1066 | { | |
1067 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1068 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1069 | } | |
c4f37e80 MV |
1070 | |
1071 | SCM | |
1bbd0b84 | 1072 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1073 | { |
c19bc088 | 1074 | SCM pwps; |
bb35f315 | 1075 | SCM pair = scm_cons (port, pstate->handle); |
54778cd3 | 1076 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (pair)); |
bb35f315 | 1077 | pstate->revealed = 1; |
c19bc088 MD |
1078 | return scm_apply (proc, exp, scm_cons (pwps, scm_listofnull)); |
1079 | } | |
1080 | ||
a1ec6916 | 1081 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 2, 0, 0, |
1bbd0b84 | 1082 | (SCM port, SCM pstate), |
b380b885 | 1083 | "") |
1bbd0b84 | 1084 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 MD |
1085 | { |
1086 | SCM pwps; | |
3b3b36dd GB |
1087 | SCM_VALIDATE_OPORT_VALUE (1,port); |
1088 | SCM_VALIDATE_PRINTSTATE (2,pstate); | |
c19bc088 | 1089 | port = SCM_COERCE_OUTPORT (port); |
54778cd3 | 1090 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (scm_cons (port, pstate))); |
c19bc088 MD |
1091 | return pwps; |
1092 | } | |
1bbd0b84 | 1093 | #undef FUNC_NAME |
c19bc088 | 1094 | |
a1ec6916 | 1095 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1096 | (SCM port), |
b380b885 | 1097 | "") |
1bbd0b84 | 1098 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1099 | { |
368cf54d GB |
1100 | if (SCM_PORT_WITH_PS_P (port)) |
1101 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1102 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1103 | return SCM_BOOL_F; |
1bbd0b84 | 1104 | RETURN_SCM_WTA (1,port); |
c4f37e80 | 1105 | } |
1bbd0b84 | 1106 | #undef FUNC_NAME |
bb35f315 | 1107 | |
c4f37e80 | 1108 | \f |
1cc91f1b | 1109 | |
0f2d19dd JB |
1110 | void |
1111 | scm_init_print () | |
0f2d19dd | 1112 | { |
c19bc088 | 1113 | SCM vtable, layout, type; |
4bfdf158 | 1114 | |
b7ff98dd | 1115 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
4bfdf158 MD |
1116 | vtable = scm_make_vtable_vtable (scm_make_struct_layout (scm_nullstr), |
1117 | SCM_INUM0, | |
1118 | SCM_EOL); | |
1119 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); | |
c19bc088 | 1120 | type = scm_make_struct (vtable, SCM_INUM0, SCM_LIST1 (layout)); |
e9cd0e47 | 1121 | scm_set_struct_vtable_name_x (type, SCM_CAR (scm_intern0 ("print-state"))); |
c62fbfe1 | 1122 | print_state_pool = scm_permanent_object (scm_cons (type, SCM_EOL)); |
c4f37e80 | 1123 | |
bb35f315 | 1124 | scm_print_state_vtable = type; |
c4f37e80 | 1125 | |
c19bc088 MD |
1126 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1127 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1128 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
1129 | scm_set_smob_print (scm_tc16_port_with_ps, print_port_with_ps); | |
1130 | ||
a0599745 | 1131 | #include "libguile/print.x" |
0f2d19dd | 1132 | } |
89e00824 ML |
1133 | |
1134 | /* | |
1135 | Local Variables: | |
1136 | c-file-style: "gnu" | |
1137 | End: | |
1138 | */ |