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); | |
57b74422 GH |
320 | #ifndef EBCDIC |
321 | else if (i == '\177') | |
322 | scm_puts (scm_charnames[scm_n_charnames - 1], port); | |
323 | #endif | |
b7f3516f TT |
324 | else if (i < 0 || i > '\177') |
325 | scm_intprint (i, 8, port); | |
326 | else | |
327 | scm_putc (i, port); | |
328 | } | |
329 | else | |
330 | scm_putc (i, port); | |
0f2d19dd | 331 | } |
a51ea417 | 332 | else if (SCM_IFLAGP (exp) |
5ca6dc39 | 333 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
b7f3516f | 334 | scm_puts (SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
335 | else if (SCM_ILOCP (exp)) |
336 | { | |
b7f3516f | 337 | scm_puts ("#@", port); |
230d095f | 338 | scm_intprint (SCM_IFRAME (exp), 10, port); |
b7f3516f | 339 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
230d095f | 340 | scm_intprint (SCM_IDIST (exp), 10, port); |
0f2d19dd JB |
341 | } |
342 | else | |
343 | goto idef; | |
344 | break; | |
345 | case 1: | |
346 | /* gloc */ | |
b7f3516f | 347 | scm_puts ("#@", port); |
998308d3 | 348 | exp = SCM_GLOC_SYM (exp); |
0f2d19dd JB |
349 | goto taloop; |
350 | default: | |
351 | idef: | |
352 | scm_ipruk ("immediate", exp, port); | |
353 | break; | |
354 | case 0: | |
355 | switch (SCM_TYP7 (exp)) | |
356 | { | |
357 | case scm_tcs_cons_gloc: | |
358 | ||
fee7ef83 | 359 | if (SCM_STRUCT_VTABLE_DATA (exp) [scm_vtable_index_vcell] == 0) |
0f2d19dd | 360 | { |
c4f37e80 | 361 | ENTER_NESTED_DATA (pstate, exp, circref); |
8b840115 MD |
362 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) |
363 | { | |
364 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
365 | if (!print) | |
366 | goto print_struct; | |
367 | SCM_NEWSMOB (pwps, | |
368 | scm_tc16_port_with_ps, | |
54778cd3 | 369 | SCM_UNPACK (scm_cons (port, pstate->handle))); |
8b840115 MD |
370 | scm_call_generic_2 (print, exp, pwps); |
371 | } | |
372 | else | |
373 | { | |
374 | print_struct: | |
375 | scm_print_struct (exp, port, pstate); | |
376 | } | |
c4f37e80 | 377 | EXIT_NESTED_DATA (pstate); |
0f2d19dd JB |
378 | break; |
379 | } | |
380 | ||
381 | case scm_tcs_cons_imcar: | |
382 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
383 | ENTER_NESTED_DATA (pstate, exp, circref); |
384 | scm_iprlist ("(", exp, ')', port, pstate); | |
385 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
386 | break; |
387 | circref: | |
c62fbfe1 | 388 | print_circref (port, pstate, exp); |
0f2d19dd | 389 | break; |
7332df66 | 390 | macros: |
80ea260c | 391 | if (!SCM_CLOSUREP (SCM_CDR (exp))) |
7332df66 | 392 | goto prinmacro; |
0f2d19dd | 393 | case scm_tcs_closures: |
7332df66 MD |
394 | /* The user supplied print closure procedure must handle |
395 | macro closures as well. */ | |
bb35f315 MV |
396 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
397 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 398 | exp, port, pstate))) |
bb35f315 | 399 | { |
ba031394 | 400 | SCM name, code, env; |
bb35f315 MV |
401 | if (SCM_TYP16 (exp) == scm_tc16_macro) |
402 | { | |
403 | /* Printing a macro. */ | |
404 | prinmacro: | |
405 | name = scm_macro_name (exp); | |
406 | if (!SCM_CLOSUREP (SCM_CDR (exp))) | |
407 | { | |
9e882eec | 408 | code = env = SCM_UNDEFINED; |
b7f3516f | 409 | scm_puts ("#<primitive-", port); |
bb35f315 MV |
410 | } |
411 | else | |
412 | { | |
413 | code = SCM_CODE (SCM_CDR (exp)); | |
ba031394 | 414 | env = SCM_ENV (SCM_CDR (exp)); |
b7f3516f | 415 | scm_puts ("#<", port); |
bb35f315 | 416 | } |
206d3de3 | 417 | if (SCM_CELL_WORD_0 (exp) & (3L << 16)) |
b7f3516f | 418 | scm_puts ("macro", port); |
bb35f315 | 419 | else |
b7f3516f | 420 | scm_puts ("syntax", port); |
206d3de3 | 421 | if (SCM_CELL_WORD_0 (exp) & (2L << 16)) |
b7f3516f | 422 | scm_putc ('!', port); |
bb35f315 MV |
423 | } |
424 | else | |
425 | { | |
426 | /* Printing a closure. */ | |
427 | name = scm_procedure_name (exp); | |
428 | code = SCM_CODE (exp); | |
ba031394 | 429 | env = SCM_ENV (exp); |
b7f3516f | 430 | scm_puts ("#<procedure", port); |
bb35f315 | 431 | } |
0c95b57d | 432 | if (SCM_ROSTRINGP (name)) |
bb35f315 | 433 | { |
b7f3516f TT |
434 | scm_putc (' ', port); |
435 | scm_puts (SCM_ROCHARS (name), port); | |
bb35f315 | 436 | } |
9e882eec | 437 | if (!SCM_UNBNDP (code)) |
bb35f315 | 438 | { |
ba031394 MD |
439 | if (SCM_PRINT_SOURCE_P) |
440 | { | |
441 | code = scm_unmemocopy (code, | |
442 | SCM_EXTEND_ENV (SCM_CAR (code), | |
443 | SCM_EOL, | |
444 | env)); | |
445 | ENTER_NESTED_DATA (pstate, exp, circref); | |
446 | scm_iprlist (" ", code, '>', port, pstate); | |
447 | EXIT_NESTED_DATA (pstate); | |
448 | } | |
449 | else | |
450 | { | |
451 | if (SCM_TYP16 (exp) != scm_tc16_macro) | |
452 | { | |
b7f3516f | 453 | scm_putc (' ', port); |
ba031394 MD |
454 | scm_iprin1 (SCM_CAR (code), port, pstate); |
455 | } | |
b7f3516f | 456 | scm_putc ('>', port); |
ba031394 | 457 | } |
bb35f315 MV |
458 | } |
459 | else | |
b7f3516f | 460 | scm_putc ('>', port); |
bb35f315 | 461 | } |
0f2d19dd | 462 | break; |
0f2d19dd JB |
463 | case scm_tc7_substring: |
464 | case scm_tc7_string: | |
c62fbfe1 | 465 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 466 | { |
5ca6dc39 JB |
467 | scm_sizet i; |
468 | ||
b7f3516f | 469 | scm_putc ('"', port); |
0f2d19dd JB |
470 | for (i = 0; i < SCM_ROLENGTH (exp); ++i) |
471 | switch (SCM_ROCHARS (exp)[i]) | |
472 | { | |
dbef8851 | 473 | case '"': |
0f2d19dd | 474 | case '\\': |
b7f3516f | 475 | scm_putc ('\\', port); |
0f2d19dd | 476 | default: |
b7f3516f | 477 | scm_putc (SCM_ROCHARS (exp)[i], port); |
0f2d19dd | 478 | } |
b7f3516f | 479 | scm_putc ('"', port); |
0f2d19dd JB |
480 | break; |
481 | } | |
482 | else | |
b7f3516f TT |
483 | scm_lfwrite (SCM_ROCHARS (exp), (scm_sizet) SCM_ROLENGTH (exp), |
484 | port); | |
0f2d19dd | 485 | break; |
28b06554 | 486 | case scm_tc7_symbol: |
0f2d19dd JB |
487 | { |
488 | int pos; | |
489 | int end; | |
490 | int len; | |
491 | char * str; | |
492 | int weird; | |
493 | int maybe_weird; | |
4dc2435a | 494 | int mw_pos = 0; |
0f2d19dd JB |
495 | |
496 | len = SCM_LENGTH (exp); | |
86c991c2 | 497 | str = SCM_SYMBOL_CHARS (exp); |
0f2d19dd JB |
498 | scm_remember (&exp); |
499 | pos = 0; | |
500 | weird = 0; | |
501 | maybe_weird = 0; | |
502 | ||
503 | if (len == 0) | |
b7f3516f | 504 | scm_lfwrite ("#{}#", 4, port); |
0f2d19dd JB |
505 | |
506 | for (end = pos; end < len; ++end) | |
507 | switch (str[end]) | |
508 | { | |
509 | #ifdef BRACKETS_AS_PARENS | |
510 | case '[': | |
511 | case ']': | |
512 | #endif | |
513 | case '(': | |
514 | case ')': | |
dbef8851 | 515 | case '"': |
0f2d19dd JB |
516 | case ';': |
517 | case SCM_WHITE_SPACES: | |
518 | case SCM_LINE_INCREMENTORS: | |
519 | weird_handler: | |
520 | if (maybe_weird) | |
521 | { | |
522 | end = mw_pos; | |
523 | maybe_weird = 0; | |
524 | } | |
525 | if (!weird) | |
526 | { | |
b7f3516f | 527 | scm_lfwrite ("#{", 2, port); |
0f2d19dd JB |
528 | weird = 1; |
529 | } | |
530 | if (pos < end) | |
531 | { | |
b7f3516f | 532 | scm_lfwrite (str + pos, end - pos, port); |
0f2d19dd JB |
533 | } |
534 | { | |
535 | char buf[2]; | |
536 | buf[0] = '\\'; | |
537 | buf[1] = str[end]; | |
b7f3516f | 538 | scm_lfwrite (buf, 2, port); |
0f2d19dd JB |
539 | } |
540 | pos = end + 1; | |
541 | break; | |
542 | case '\\': | |
543 | if (weird) | |
544 | goto weird_handler; | |
545 | if (!maybe_weird) | |
546 | { | |
547 | maybe_weird = 1; | |
548 | mw_pos = pos; | |
549 | } | |
550 | break; | |
551 | case '}': | |
552 | case '#': | |
553 | if (weird) | |
554 | goto weird_handler; | |
555 | break; | |
556 | default: | |
557 | break; | |
558 | } | |
559 | if (pos < end) | |
b7f3516f | 560 | scm_lfwrite (str + pos, end - pos, port); |
0f2d19dd | 561 | if (weird) |
b7f3516f | 562 | scm_lfwrite ("}#", 2, port); |
0f2d19dd JB |
563 | break; |
564 | } | |
565 | case scm_tc7_wvect: | |
c62fbfe1 | 566 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 567 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 568 | scm_puts ("#wh(", port); |
0f2d19dd | 569 | else |
b7f3516f | 570 | scm_puts ("#w(", port); |
0f2d19dd JB |
571 | goto common_vector_printer; |
572 | ||
573 | case scm_tc7_vector: | |
c62fbfe1 | 574 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 575 | scm_puts ("#(", port); |
0f2d19dd | 576 | common_vector_printer: |
9fbaf27c | 577 | { |
5ca6dc39 | 578 | register long i; |
9fbaf27c MD |
579 | int last = SCM_LENGTH (exp) - 1; |
580 | int cutp = 0; | |
581 | if (pstate->fancyp && SCM_LENGTH (exp) > pstate->length) | |
582 | { | |
583 | last = pstate->length - 1; | |
584 | cutp = 1; | |
585 | } | |
586 | for (i = 0; i < last; ++i) | |
587 | { | |
588 | /* CHECK_INTS; */ | |
589 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 590 | scm_putc (' ', port); |
9fbaf27c MD |
591 | } |
592 | if (i == last) | |
593 | { | |
594 | /* CHECK_INTS; */ | |
595 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
596 | } | |
597 | if (cutp) | |
b7f3516f TT |
598 | scm_puts (" ...", port); |
599 | scm_putc (')', port); | |
9fbaf27c | 600 | } |
c62fbfe1 | 601 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 602 | break; |
afe5177e | 603 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
604 | case scm_tc7_bvect: |
605 | case scm_tc7_byvect: | |
606 | case scm_tc7_svect: | |
607 | case scm_tc7_ivect: | |
608 | case scm_tc7_uvect: | |
609 | case scm_tc7_fvect: | |
610 | case scm_tc7_dvect: | |
611 | case scm_tc7_cvect: | |
5c11cc9d | 612 | #ifdef HAVE_LONG_LONGS |
0f2d19dd JB |
613 | case scm_tc7_llvect: |
614 | #endif | |
c62fbfe1 | 615 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 616 | break; |
afe5177e | 617 | #endif |
0f2d19dd | 618 | case scm_tcs_subrs: |
9de33deb MD |
619 | scm_puts (SCM_SUBR_GENERIC (exp) && *SCM_SUBR_GENERIC (exp) |
620 | ? "#<primitive-generic " | |
621 | : "#<primitive-procedure ", | |
622 | port); | |
b7f3516f TT |
623 | scm_puts (SCM_CHARS (SCM_SNAME (exp)), port); |
624 | scm_putc ('>', port); | |
0f2d19dd JB |
625 | break; |
626 | #ifdef CCLO | |
627 | case scm_tc7_cclo: | |
56977059 MD |
628 | { |
629 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 630 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
631 | { |
632 | /* Print gsubrs as primitives */ | |
c180dfd3 | 633 | SCM name = scm_procedure_name (exp); |
56977059 MD |
634 | scm_puts ("#<primitive-procedure", port); |
635 | if (SCM_NFALSEP (name)) | |
636 | { | |
637 | scm_putc (' ', port); | |
638 | scm_puts (SCM_CHARS (name), port); | |
639 | } | |
640 | } | |
641 | else | |
642 | { | |
643 | scm_puts ("#<compiled-closure ", port); | |
644 | scm_iprin1 (proc, port, pstate); | |
645 | } | |
646 | scm_putc ('>', port); | |
647 | } | |
0f2d19dd JB |
648 | break; |
649 | #endif | |
c180dfd3 MD |
650 | case scm_tc7_pws: |
651 | scm_puts ("#<procedure-with-setter", port); | |
652 | { | |
653 | SCM name = scm_procedure_name (exp); | |
654 | if (SCM_NFALSEP (name)) | |
655 | { | |
656 | scm_putc (' ', port); | |
657 | scm_puts (SCM_ROCHARS (name), port); | |
658 | } | |
659 | } | |
660 | scm_putc ('>', port); | |
661 | break; | |
0f2d19dd | 662 | case scm_tc7_contin: |
b7f3516f | 663 | scm_puts ("#<continuation ", port); |
0f2d19dd | 664 | scm_intprint (SCM_LENGTH (exp), 10, port); |
b7f3516f | 665 | scm_puts (" @ ", port); |
0f2d19dd | 666 | scm_intprint ((long) SCM_CHARS (exp), 16, port); |
b7f3516f | 667 | scm_putc ('>', port); |
0f2d19dd JB |
668 | break; |
669 | case scm_tc7_port: | |
5ca6dc39 JB |
670 | { |
671 | register long i = SCM_PTOBNUM (exp); | |
672 | if (i < scm_numptob | |
673 | && scm_ptobs[i].print | |
674 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 675 | break; |
5ca6dc39 JB |
676 | goto punk; |
677 | } | |
678 | case scm_tc7_smob: | |
679 | { | |
680 | register long i; | |
681 | ENTER_NESTED_DATA (pstate, exp, circref); | |
682 | i = SCM_SMOBNUM (exp); | |
683 | if (i < scm_numsmob && scm_smobs[i].print | |
684 | && (scm_smobs[i].print) (exp, port, pstate)) | |
685 | { | |
686 | EXIT_NESTED_DATA (pstate); | |
687 | break; | |
688 | } | |
689 | EXIT_NESTED_DATA (pstate); | |
690 | /* Macros have their print field set to NULL. They are | |
691 | handled at the same place as closures in order to achieve | |
692 | non-redundancy. Placing the condition here won't slow | |
693 | down printing of other smobs. */ | |
694 | if (SCM_TYP16 (exp) == scm_tc16_macro) | |
695 | goto macros; | |
696 | } | |
0f2d19dd | 697 | default: |
a51ea417 MD |
698 | punk: |
699 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
700 | } |
701 | } | |
702 | } | |
703 | ||
c62fbfe1 MD |
704 | /* Print states are necessary for circular reference safe printing. |
705 | * They are also expensive to allocate. Therefore print states are | |
706 | * kept in a pool so that they can be reused. | |
707 | */ | |
1cc91f1b | 708 | |
bb35f315 MV |
709 | /* The PORT argument can also be a print-state/port pair, which will |
710 | * then be used instead of allocating a new print state. This is | |
711 | * useful for continuing a chain of print calls from Scheme. */ | |
712 | ||
a51ea417 | 713 | void |
1bbd0b84 | 714 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 715 | { |
c4f37e80 MV |
716 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
717 | SCM pstate_scm; | |
c62fbfe1 MD |
718 | scm_print_state *pstate; |
719 | ||
bb35f315 MV |
720 | /* If PORT is a print-state/port pair, use that. Else create a new |
721 | print-state. */ | |
c4f37e80 | 722 | |
0c95b57d | 723 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 724 | { |
52235e71 MD |
725 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
726 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
727 | } |
728 | else | |
c62fbfe1 | 729 | { |
c4f37e80 MV |
730 | /* First try to allocate a print state from the pool */ |
731 | SCM_DEFER_INTS; | |
732 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) | |
733 | { | |
734 | handle = SCM_CDR (print_state_pool); | |
735 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
736 | } | |
737 | SCM_ALLOW_INTS; | |
54778cd3 | 738 | if (SCM_FALSEP (handle)) |
c4f37e80 MV |
739 | handle = scm_cons (make_print_state (), SCM_EOL); |
740 | pstate_scm = SCM_CAR (handle); | |
c62fbfe1 | 741 | } |
c62fbfe1 | 742 | |
c4f37e80 | 743 | pstate = SCM_PRINT_STATE (pstate_scm); |
c62fbfe1 MD |
744 | pstate->writingp = writingp; |
745 | scm_iprin1 (exp, port, pstate); | |
746 | ||
bb35f315 MV |
747 | /* Return print state to pool if it has been created above and |
748 | hasn't escaped to Scheme. */ | |
749 | ||
54778cd3 | 750 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 MV |
751 | { |
752 | SCM_DEFER_INTS; | |
753 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
754 | SCM_SETCDR (print_state_pool, handle); | |
755 | SCM_ALLOW_INTS; | |
756 | } | |
a51ea417 MD |
757 | } |
758 | ||
0f2d19dd JB |
759 | |
760 | /* Print an integer. | |
761 | */ | |
1cc91f1b | 762 | |
0f2d19dd | 763 | void |
1bbd0b84 | 764 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
765 | { |
766 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 767 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
768 | } |
769 | ||
770 | /* Print an object of unrecognized type. | |
771 | */ | |
1cc91f1b | 772 | |
0f2d19dd | 773 | void |
1bbd0b84 | 774 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 775 | { |
b7f3516f TT |
776 | scm_puts ("#<unknown-", port); |
777 | scm_puts (hdr, port); | |
0f2d19dd JB |
778 | if (SCM_CELLP (ptr)) |
779 | { | |
b7f3516f | 780 | scm_puts (" (0x", port); |
54778cd3 | 781 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 782 | scm_puts (" . 0x", port); |
54778cd3 | 783 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 784 | scm_puts (") @", port); |
0f2d19dd | 785 | } |
b7f3516f | 786 | scm_puts (" 0x", port); |
54778cd3 | 787 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 788 | scm_putc ('>', port); |
0f2d19dd JB |
789 | } |
790 | ||
791 | /* Print a list. | |
792 | */ | |
a51ea417 | 793 | |
1cc91f1b | 794 | |
0f2d19dd | 795 | void |
1bbd0b84 | 796 | scm_iprlist (char *hdr,SCM exp,int tlr,SCM port,scm_print_state *pstate) |
0f2d19dd | 797 | { |
c62fbfe1 MD |
798 | register SCM hare, tortoise; |
799 | int floor = pstate->top - 2; | |
b7f3516f | 800 | scm_puts (hdr, port); |
0f2d19dd | 801 | /* CHECK_INTS; */ |
c62fbfe1 MD |
802 | if (pstate->fancyp) |
803 | goto fancy_printing; | |
804 | ||
805 | /* Run a hare and tortoise so that total time complexity will be | |
806 | O(depth * N) instead of O(N^2). */ | |
807 | hare = SCM_CDR (exp); | |
808 | tortoise = exp; | |
0c95b57d | 809 | while (SCM_ECONSP (hare)) |
c62fbfe1 | 810 | { |
54778cd3 | 811 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
812 | goto fancy_printing; |
813 | hare = SCM_CDR (hare); | |
2fab3faa | 814 | if (SCM_IMP (hare) || SCM_NECONSP (hare)) |
c62fbfe1 MD |
815 | break; |
816 | hare = SCM_CDR (hare); | |
817 | tortoise = SCM_CDR (tortoise); | |
818 | } | |
819 | ||
820 | /* No cdr cycles intrinsic to this list */ | |
821 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
0f2d19dd JB |
822 | exp = SCM_CDR (exp); |
823 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
824 | { | |
5ca6dc39 JB |
825 | register int i; |
826 | ||
0f2d19dd JB |
827 | if (SCM_NECONSP (exp)) |
828 | break; | |
c62fbfe1 | 829 | for (i = floor; i >= 0; --i) |
230d095f | 830 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
831 | goto circref; |
832 | PUSH_REF (pstate, exp); | |
b7f3516f | 833 | scm_putc (' ', port); |
0f2d19dd | 834 | /* CHECK_INTS; */ |
c62fbfe1 | 835 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd JB |
836 | } |
837 | if (SCM_NNULLP (exp)) | |
838 | { | |
b7f3516f | 839 | scm_puts (" . ", port); |
c62fbfe1 | 840 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 841 | } |
c62fbfe1 | 842 | |
a51ea417 | 843 | end: |
b7f3516f | 844 | scm_putc (tlr, port); |
c62fbfe1 | 845 | pstate->top = floor + 2; |
a51ea417 | 846 | return; |
c62fbfe1 MD |
847 | |
848 | fancy_printing: | |
849 | { | |
850 | int n = pstate->length; | |
851 | ||
852 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
853 | exp = SCM_CDR (exp); --n; | |
854 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
855 | { | |
5ca6dc39 JB |
856 | register unsigned long i; |
857 | ||
c62fbfe1 MD |
858 | if (SCM_NECONSP (exp)) |
859 | break; | |
860 | for (i = 0; i < pstate->top; ++i) | |
230d095f | 861 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
862 | goto fancy_circref; |
863 | if (pstate->fancyp) | |
864 | { | |
865 | if (n == 0) | |
866 | { | |
b7f3516f | 867 | scm_puts (" ...", port); |
c62fbfe1 MD |
868 | goto skip_tail; |
869 | } | |
870 | else | |
871 | --n; | |
872 | } | |
873 | PUSH_REF(pstate, exp); | |
874 | ++pstate->list_offset; | |
b7f3516f | 875 | scm_putc (' ', port); |
c62fbfe1 MD |
876 | /* CHECK_INTS; */ |
877 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
878 | } | |
879 | } | |
880 | if (SCM_NNULLP (exp)) | |
881 | { | |
b7f3516f | 882 | scm_puts (" . ", port); |
c62fbfe1 MD |
883 | scm_iprin1 (exp, port, pstate); |
884 | } | |
885 | skip_tail: | |
886 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 887 | goto end; |
a51ea417 | 888 | |
c62fbfe1 MD |
889 | fancy_circref: |
890 | pstate->list_offset -= pstate->top - floor - 2; | |
891 | ||
892 | circref: | |
b7f3516f | 893 | scm_puts (" . ", port); |
c62fbfe1 MD |
894 | print_circref (port, pstate, exp); |
895 | goto end; | |
0f2d19dd JB |
896 | } |
897 | ||
898 | \f | |
899 | ||
bb35f315 MV |
900 | int |
901 | scm_valid_oport_value_p (SCM val) | |
902 | { | |
368cf54d GB |
903 | return (SCM_OPOUTPORTP (val) |
904 | || (SCM_PORT_WITH_PS_P (val) | |
905 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
906 | } |
907 | ||
8b840115 | 908 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 909 | |
0f2d19dd | 910 | SCM |
1bbd0b84 | 911 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
912 | { |
913 | if (SCM_UNBNDP (port)) | |
914 | port = scm_cur_outp; | |
3eb7e6ee JB |
915 | |
916 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 917 | |
a51ea417 | 918 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
919 | #ifdef HAVE_PIPE |
920 | # ifdef EPIPE | |
921 | if (EPIPE == errno) | |
922 | scm_close_port (port); | |
923 | # endif | |
924 | #endif | |
925 | return SCM_UNSPECIFIED; | |
926 | } | |
927 | ||
928 | ||
8b840115 | 929 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 930 | |
0f2d19dd | 931 | SCM |
1bbd0b84 | 932 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
933 | { |
934 | if (SCM_UNBNDP (port)) | |
935 | port = scm_cur_outp; | |
3eb7e6ee JB |
936 | |
937 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 938 | |
a51ea417 | 939 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
940 | #ifdef HAVE_PIPE |
941 | # ifdef EPIPE | |
942 | if (EPIPE == errno) | |
943 | scm_close_port (port); | |
944 | # endif | |
945 | #endif | |
946 | return SCM_UNSPECIFIED; | |
947 | } | |
948 | ||
70d63753 GB |
949 | |
950 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
951 | (SCM destination, SCM message, SCM args), | |
b380b885 MD |
952 | "Write MESSAGE to DESTINATION, defaulting to `current-output-port'.\n" |
953 | "MESSAGE can contain ~A (was %s) and ~S (was %S) escapes. When printed,\n" | |
954 | "the escapes are replaced with corresponding members of ARGS:\n" | |
955 | "~A formats using `display' and ~S formats using `write'.\n" | |
956 | "If DESTINATION is #t, then use the `current-output-port',\n" | |
957 | "if DESTINATION is #f, then return a string containing the formatted text.\n" | |
958 | "Does not add a trailing newline.") | |
70d63753 GB |
959 | #define FUNC_NAME s_scm_simple_format |
960 | { | |
961 | SCM answer = SCM_UNSPECIFIED; | |
962 | int fReturnString = 0; | |
963 | int writingp; | |
964 | char *start; | |
965 | char *p; | |
966 | ||
daba1a71 MD |
967 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
968 | { | |
969 | destination = scm_cur_outp; | |
970 | } | |
971 | else if (SCM_FALSEP (destination)) | |
972 | { | |
973 | fReturnString = 1; | |
974 | destination = scm_mkstrport (SCM_INUM0, | |
975 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
976 | SCM_OPN | SCM_WRTNG, | |
977 | FUNC_NAME); | |
978 | } | |
979 | else | |
980 | { | |
981 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
982 | destination = SCM_COERCE_OUTPORT (destination); | |
983 | } | |
984 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 985 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 986 | |
70d63753 GB |
987 | start = SCM_ROCHARS (message); |
988 | for (p = start; *p != '\0'; ++p) | |
989 | if (*p == '~') | |
990 | { | |
991 | if (SCM_IMP (args) || SCM_NCONSP (args)) | |
992 | continue; | |
993 | ||
994 | ++p; | |
cc6f0237 | 995 | if (*p == 'A' || *p == 'a') |
70d63753 | 996 | writingp = 0; |
cc6f0237 | 997 | else if (*p == 'S' || *p == 's') |
70d63753 GB |
998 | writingp = 1; |
999 | else | |
1000 | continue; | |
1001 | ||
1002 | scm_lfwrite (start, p - start - 1, destination); | |
1003 | scm_prin1 (SCM_CAR (args), destination, writingp); | |
1004 | args = SCM_CDR (args); | |
1005 | start = p + 1; | |
1006 | } | |
1007 | scm_lfwrite (start, p - start, destination); | |
1008 | ||
1009 | if (fReturnString) | |
1010 | answer = scm_strport_to_string (destination); | |
1011 | ||
daba1a71 | 1012 | return scm_return_first (answer, message); |
70d63753 GB |
1013 | } |
1014 | #undef FUNC_NAME | |
1015 | ||
1016 | ||
3b3b36dd | 1017 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 GB |
1018 | (SCM port), |
1019 | "Send a newline to PORT.") | |
1bbd0b84 | 1020 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1021 | { |
1022 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1023 | port = scm_cur_outp; |
3eb7e6ee | 1024 | |
3b3b36dd | 1025 | SCM_VALIDATE_OPORT_VALUE (1,port); |
bb35f315 | 1026 | |
0ef4ae82 | 1027 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1028 | return SCM_UNSPECIFIED; |
1029 | } | |
1bbd0b84 | 1030 | #undef FUNC_NAME |
0f2d19dd | 1031 | |
3b3b36dd | 1032 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 GB |
1033 | (SCM chr, SCM port), |
1034 | "Send character CHR to PORT.") | |
1bbd0b84 | 1035 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1036 | { |
1037 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1038 | port = scm_cur_outp; |
3eb7e6ee | 1039 | |
7866a09b | 1040 | SCM_VALIDATE_CHAR (1,chr); |
3b3b36dd | 1041 | SCM_VALIDATE_OPORT_VALUE (2,port); |
bb35f315 | 1042 | |
7866a09b | 1043 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1044 | #ifdef HAVE_PIPE |
1045 | # ifdef EPIPE | |
1046 | if (EPIPE == errno) | |
1047 | scm_close_port (port); | |
1048 | # endif | |
1049 | #endif | |
1050 | return SCM_UNSPECIFIED; | |
1051 | } | |
1bbd0b84 | 1052 | #undef FUNC_NAME |
0f2d19dd | 1053 | |
0f2d19dd JB |
1054 | \f |
1055 | ||
bb35f315 | 1056 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1057 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1058 | * containing PORT and PSTATE. This object can be used as the port for | |
1059 | * display/write etc to continue the current print chain. The REVEALED | |
1060 | * field of PSTATE is set to true to indicate that the print state has | |
1061 | * escaped to Scheme and thus has to be freed by the GC. | |
1062 | */ | |
1063 | ||
1064 | long scm_tc16_port_with_ps; | |
1065 | ||
1066 | /* Print exactly as the port itself would */ | |
1067 | ||
1068 | static int | |
1069 | print_port_with_ps (SCM obj, SCM port, scm_print_state *pstate) | |
1070 | { | |
1071 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1072 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1073 | } | |
c4f37e80 MV |
1074 | |
1075 | SCM | |
1bbd0b84 | 1076 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1077 | { |
c19bc088 | 1078 | SCM pwps; |
bb35f315 | 1079 | SCM pair = scm_cons (port, pstate->handle); |
54778cd3 | 1080 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (pair)); |
bb35f315 | 1081 | pstate->revealed = 1; |
c19bc088 MD |
1082 | return scm_apply (proc, exp, scm_cons (pwps, scm_listofnull)); |
1083 | } | |
1084 | ||
a1ec6916 | 1085 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 2, 0, 0, |
1bbd0b84 | 1086 | (SCM port, SCM pstate), |
b380b885 | 1087 | "") |
1bbd0b84 | 1088 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 MD |
1089 | { |
1090 | SCM pwps; | |
3b3b36dd GB |
1091 | SCM_VALIDATE_OPORT_VALUE (1,port); |
1092 | SCM_VALIDATE_PRINTSTATE (2,pstate); | |
c19bc088 | 1093 | port = SCM_COERCE_OUTPORT (port); |
54778cd3 | 1094 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (scm_cons (port, pstate))); |
c19bc088 MD |
1095 | return pwps; |
1096 | } | |
1bbd0b84 | 1097 | #undef FUNC_NAME |
c19bc088 | 1098 | |
a1ec6916 | 1099 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1100 | (SCM port), |
b380b885 | 1101 | "") |
1bbd0b84 | 1102 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1103 | { |
368cf54d GB |
1104 | if (SCM_PORT_WITH_PS_P (port)) |
1105 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1106 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1107 | return SCM_BOOL_F; |
1bbd0b84 | 1108 | RETURN_SCM_WTA (1,port); |
c4f37e80 | 1109 | } |
1bbd0b84 | 1110 | #undef FUNC_NAME |
bb35f315 | 1111 | |
c4f37e80 | 1112 | \f |
1cc91f1b | 1113 | |
0f2d19dd JB |
1114 | void |
1115 | scm_init_print () | |
0f2d19dd | 1116 | { |
c19bc088 | 1117 | SCM vtable, layout, type; |
4bfdf158 | 1118 | |
b7ff98dd | 1119 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
3ce4544c | 1120 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
4bfdf158 | 1121 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
c19bc088 | 1122 | type = scm_make_struct (vtable, SCM_INUM0, SCM_LIST1 (layout)); |
e9cd0e47 | 1123 | scm_set_struct_vtable_name_x (type, SCM_CAR (scm_intern0 ("print-state"))); |
c62fbfe1 | 1124 | print_state_pool = scm_permanent_object (scm_cons (type, SCM_EOL)); |
c4f37e80 | 1125 | |
bb35f315 | 1126 | scm_print_state_vtable = type; |
c4f37e80 | 1127 | |
c19bc088 MD |
1128 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1129 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1130 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
1131 | scm_set_smob_print (scm_tc16_port_with_ps, print_port_with_ps); | |
1132 | ||
a0599745 | 1133 | #include "libguile/print.x" |
0f2d19dd | 1134 | } |
89e00824 ML |
1135 | |
1136 | /* | |
1137 | Local Variables: | |
1138 | c-file-style: "gnu" | |
1139 | End: | |
1140 | */ |