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 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 | ||
e6e2e95a MD |
47 | #include <errno.h> |
48 | ||
a0599745 MD |
49 | #include "libguile/_scm.h" |
50 | #include "libguile/chars.h" | |
a002f1a2 | 51 | #include "libguile/continuations.h" |
a0599745 MD |
52 | #include "libguile/smob.h" |
53 | #include "libguile/eval.h" | |
54 | #include "libguile/macros.h" | |
55 | #include "libguile/procprop.h" | |
56 | #include "libguile/read.h" | |
57 | #include "libguile/weaks.h" | |
58 | #include "libguile/unif.h" | |
59 | #include "libguile/alist.h" | |
60 | #include "libguile/struct.h" | |
61 | #include "libguile/objects.h" | |
62 | #include "libguile/ports.h" | |
63 | #include "libguile/root.h" | |
64 | #include "libguile/strings.h" | |
65 | #include "libguile/strports.h" | |
66 | #include "libguile/vectors.h" | |
67 | ||
68 | #include "libguile/validate.h" | |
69 | #include "libguile/print.h" | |
0f2d19dd JB |
70 | \f |
71 | ||
72 | /* {Names of immediate symbols} | |
73 | * | |
74 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
75 | */ | |
76 | ||
77 | char *scm_isymnames[] = | |
78 | { | |
79 | /* This table must agree with the declarations */ | |
80 | "#@and", | |
81 | "#@begin", | |
82 | "#@case", | |
83 | "#@cond", | |
84 | "#@do", | |
85 | "#@if", | |
86 | "#@lambda", | |
87 | "#@let", | |
88 | "#@let*", | |
89 | "#@letrec", | |
90 | "#@or", | |
91 | "#@quote", | |
92 | "#@set!", | |
93 | "#@define", | |
94 | #if 0 | |
95 | "#@literal-variable-ref", | |
96 | "#@literal-variable-set!", | |
97 | #endif | |
98 | "#@apply", | |
99 | "#@call-with-current-continuation", | |
100 | ||
101 | /* user visible ISYMS */ | |
102 | /* other keywords */ | |
103 | /* Flags */ | |
104 | ||
105 | "#f", | |
106 | "#t", | |
107 | "#<undefined>", | |
108 | "#<eof>", | |
109 | "()", | |
4df91bd6 MD |
110 | "#<unspecified>", |
111 | "#@dispatch", | |
43c667e9 MD |
112 | "#@slot-ref", |
113 | "#@slot-set!", | |
159500fb | 114 | |
159500fb MD |
115 | /* Multi-language support */ |
116 | ||
117 | "#@nil-cond", | |
118 | "#@nil-ify", | |
119 | "#@t-ify", | |
120 | "#@0-cond", | |
121 | "#@0-ify", | |
122 | "#@1-ify", | |
ccd0e478 MD |
123 | "#@bind", |
124 | ||
5623a9b4 MD |
125 | "#@delay", |
126 | ||
127 | "#<unbound>" | |
0f2d19dd JB |
128 | }; |
129 | ||
92c2555f | 130 | scm_t_option scm_print_opts[] = { |
726d810a DH |
131 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
132 | "Hook for printing closures (should handle macros as well)." }, | |
84f6a34a MD |
133 | { SCM_OPTION_BOOLEAN, "source", 0, |
134 | "Print closures with source." } | |
e6e4c9af MD |
135 | }; |
136 | ||
a1ec6916 | 137 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 138 | (SCM setting), |
71331188 | 139 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
140 | "this procedure directly, use the procedures\n" |
141 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
142 | "and @code{print-options}.") | |
1bbd0b84 | 143 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 144 | { |
a51ea417 | 145 | SCM ans = scm_options (setting, |
b7ff98dd MD |
146 | scm_print_opts, |
147 | SCM_N_PRINT_OPTIONS, | |
1bbd0b84 | 148 | FUNC_NAME); |
e6e4c9af MD |
149 | return ans; |
150 | } | |
1bbd0b84 | 151 | #undef FUNC_NAME |
e6e4c9af | 152 | |
0f2d19dd JB |
153 | \f |
154 | /* {Printing of Scheme Objects} | |
155 | */ | |
156 | ||
a51ea417 | 157 | /* Detection of circular references. |
c62fbfe1 MD |
158 | * |
159 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
160 | * time complexity (O (depth * N)), The printer code can be |
161 | * rewritten to be O(N). | |
a51ea417 | 162 | */ |
c62fbfe1 | 163 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 164 | do { \ |
c62fbfe1 MD |
165 | pstate->ref_stack[pstate->top++] = (obj); \ |
166 | if (pstate->top == pstate->ceiling) \ | |
167 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 168 | } while(0) |
a51ea417 | 169 | |
c62fbfe1 | 170 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 171 | do { \ |
5ca6dc39 | 172 | register unsigned long i; \ |
c62fbfe1 | 173 | for (i = 0; i < pstate->top; ++i) \ |
230d095f | 174 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
c62fbfe1 MD |
175 | goto label; \ |
176 | if (pstate->fancyp) \ | |
177 | { \ | |
178 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
179 | { \ | |
b7f3516f | 180 | scm_putc ('#', port); \ |
c62fbfe1 MD |
181 | return; \ |
182 | } \ | |
183 | } \ | |
184 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 185 | } while(0) |
a51ea417 | 186 | |
c62fbfe1 MD |
187 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
188 | ||
bb35f315 | 189 | SCM scm_print_state_vtable; |
c4f37e80 | 190 | |
bb35f315 | 191 | static SCM print_state_pool; |
c4f37e80 | 192 | |
f843a84c | 193 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 194 | |
3b3b36dd | 195 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 196 | (), |
5352393c MG |
197 | "Return the current-pstate -- the cadr of the\n" |
198 | "@code{print_state_pool}. @code{current-pstate} is only\n" | |
199 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 200 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 201 | { |
a0adfbf0 MD |
202 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
203 | return SCM_CADR (print_state_pool); | |
204 | else | |
0a284a4e | 205 | return SCM_BOOL_F; |
c62fbfe1 | 206 | } |
1bbd0b84 GB |
207 | #undef FUNC_NAME |
208 | ||
c62fbfe1 MD |
209 | #endif |
210 | ||
211 | #define PSTATE_SIZE 50L | |
212 | ||
698c0295 | 213 | static SCM |
1bbd0b84 | 214 | make_print_state (void) |
698c0295 MD |
215 | { |
216 | SCM print_state = scm_make_struct (SCM_CAR (print_state_pool), /* pstate type */ | |
bf685b6d | 217 | SCM_INUM0, |
698c0295 | 218 | SCM_EOL); |
bf685b6d | 219 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 220 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
bf685b6d | 221 | pstate->ref_stack = SCM_VELTS (pstate->ref_vect); |
b17004b8 | 222 | pstate->ceiling = SCM_VECTOR_LENGTH (pstate->ref_vect); |
698c0295 MD |
223 | return print_state; |
224 | } | |
1cc91f1b | 225 | |
c62fbfe1 MD |
226 | SCM |
227 | scm_make_print_state () | |
c62fbfe1 | 228 | { |
230d095f | 229 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
230 | |
231 | /* First try to allocate a print state from the pool */ | |
232 | SCM_DEFER_INTS; | |
a0adfbf0 | 233 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
698c0295 MD |
234 | { |
235 | answer = SCM_CADR (print_state_pool); | |
236 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
237 | } | |
238 | SCM_ALLOW_INTS; | |
239 | ||
230d095f | 240 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
c62fbfe1 | 241 | } |
a51ea417 | 242 | |
698c0295 | 243 | void |
6e8d25a6 | 244 | scm_free_print_state (SCM print_state) |
698c0295 MD |
245 | { |
246 | SCM handle; | |
247 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
248 | /* Cleanup before returning print state to pool. | |
249 | * It is better to do it here. Doing it in scm_prin1 | |
250 | * would cost more since that function is called much more | |
251 | * often. | |
252 | */ | |
253 | pstate->fancyp = 0; | |
bb35f315 | 254 | pstate->revealed = 0; |
698c0295 MD |
255 | SCM_NEWCELL (handle); |
256 | SCM_DEFER_INTS; | |
22a52da1 DH |
257 | SCM_SET_CELL_WORD_0 (handle, print_state); |
258 | SCM_SET_CELL_WORD_1 (handle, SCM_CDR (print_state_pool)); | |
698c0295 MD |
259 | SCM_SETCDR (print_state_pool, handle); |
260 | SCM_ALLOW_INTS; | |
261 | } | |
1cc91f1b | 262 | |
a51ea417 | 263 | static void |
1bbd0b84 | 264 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 265 | { |
b17004b8 DH |
266 | unsigned long int old_size = SCM_VECTOR_LENGTH (pstate->ref_vect); |
267 | SCM *old_elts = SCM_VELTS (pstate->ref_vect); | |
268 | unsigned long int new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 269 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
270 | SCM *new_elts = SCM_VELTS (new_vect); |
271 | unsigned long int i; | |
272 | ||
273 | for (i = 0; i != old_size; ++i) | |
274 | new_elts [i] = old_elts [i]; | |
275 | ||
276 | pstate->ref_vect = new_vect; | |
277 | pstate->ref_stack = new_elts; | |
bf685b6d | 278 | pstate->ceiling = new_size; |
a51ea417 MD |
279 | } |
280 | ||
1cc91f1b | 281 | |
a51ea417 | 282 | static void |
1bbd0b84 | 283 | print_circref (SCM port,scm_print_state *pstate,SCM ref) |
a51ea417 | 284 | { |
c014a02e ML |
285 | register long i; |
286 | long self = pstate->top - 1; | |
c62fbfe1 MD |
287 | i = pstate->top - 1; |
288 | if (SCM_CONSP (pstate->ref_stack[i])) | |
289 | { | |
290 | while (i > 0) | |
291 | { | |
292 | if (SCM_NCONSP (pstate->ref_stack[i - 1]) | |
230d095f DH |
293 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
294 | pstate->ref_stack[i])) | |
c62fbfe1 MD |
295 | break; |
296 | --i; | |
297 | } | |
298 | self = i; | |
299 | } | |
300 | for (i = pstate->top - 1; 1; --i) | |
230d095f | 301 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
c62fbfe1 | 302 | break; |
b7f3516f | 303 | scm_putc ('#', port); |
c62fbfe1 | 304 | scm_intprint (i - self, 10, port); |
b7f3516f | 305 | scm_putc ('#', port); |
a51ea417 MD |
306 | } |
307 | ||
6662998f MV |
308 | /* Print the name of a symbol. */ |
309 | ||
310 | void | |
311 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
312 | { | |
313 | size_t pos; | |
314 | size_t end; | |
315 | int weird; | |
316 | int maybe_weird; | |
317 | size_t mw_pos = 0; | |
318 | ||
319 | pos = 0; | |
320 | weird = 0; | |
321 | maybe_weird = 0; | |
322 | ||
323 | /* XXX - Lots of weird symbol names are missed, such as "12" or | |
324 | "'a". */ | |
325 | ||
326 | if (len == 0) | |
327 | scm_lfwrite ("#{}#", 4, port); | |
328 | else if (str[0] == '#' || str[0] == ':' || str[len-1] == ':') | |
329 | { | |
330 | scm_lfwrite ("#{", 2, port); | |
331 | weird = 1; | |
332 | } | |
333 | ||
334 | for (end = pos; end < len; ++end) | |
335 | switch (str[end]) | |
336 | { | |
337 | #ifdef BRACKETS_AS_PARENS | |
338 | case '[': | |
339 | case ']': | |
340 | #endif | |
341 | case '(': | |
342 | case ')': | |
343 | case '"': | |
344 | case ';': | |
345 | case SCM_WHITE_SPACES: | |
346 | case SCM_LINE_INCREMENTORS: | |
347 | weird_handler: | |
348 | if (maybe_weird) | |
349 | { | |
350 | end = mw_pos; | |
351 | maybe_weird = 0; | |
352 | } | |
353 | if (!weird) | |
354 | { | |
355 | scm_lfwrite ("#{", 2, port); | |
356 | weird = 1; | |
357 | } | |
358 | if (pos < end) | |
359 | { | |
360 | scm_lfwrite (str + pos, end - pos, port); | |
361 | } | |
362 | { | |
363 | char buf[2]; | |
364 | buf[0] = '\\'; | |
365 | buf[1] = str[end]; | |
366 | scm_lfwrite (buf, 2, port); | |
367 | } | |
368 | pos = end + 1; | |
369 | break; | |
370 | case '\\': | |
371 | if (weird) | |
372 | goto weird_handler; | |
373 | if (!maybe_weird) | |
374 | { | |
375 | maybe_weird = 1; | |
376 | mw_pos = pos; | |
377 | } | |
378 | break; | |
379 | case '}': | |
380 | case '#': | |
381 | if (weird) | |
382 | goto weird_handler; | |
383 | break; | |
384 | default: | |
385 | break; | |
386 | } | |
387 | if (pos < end) | |
388 | scm_lfwrite (str + pos, end - pos, port); | |
389 | if (weird) | |
390 | scm_lfwrite ("}#", 2, port); | |
391 | } | |
392 | ||
c62fbfe1 | 393 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 394 | */ |
8b840115 MD |
395 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
396 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 397 | |
0f2d19dd | 398 | void |
1bbd0b84 | 399 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 400 | { |
0f2d19dd | 401 | taloop: |
54778cd3 | 402 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 403 | { |
e34f941a DH |
404 | case scm_tc3_closure: |
405 | case scm_tc3_tc7_1: | |
406 | case scm_tc3_tc7_2: | |
407 | /* These tc3 tags should never occur in an immediate value. They are | |
408 | * only used in cell types of non-immediates, i. e. the value returned | |
409 | * by SCM_CELL_TYPE (exp) can use these tags. | |
410 | */ | |
411 | scm_ipruk ("immediate", exp, port); | |
412 | break; | |
413 | case scm_tc3_int_1: | |
414 | case scm_tc3_int_2: | |
0f2d19dd JB |
415 | scm_intprint (SCM_INUM (exp), 10, port); |
416 | break; | |
e34f941a | 417 | case scm_tc3_imm24: |
7866a09b | 418 | if (SCM_CHARP (exp)) |
0f2d19dd | 419 | { |
e34f941a | 420 | long i = SCM_CHAR (exp); |
5ca6dc39 | 421 | |
b7f3516f TT |
422 | if (SCM_WRITINGP (pstate)) |
423 | { | |
424 | scm_puts ("#\\", port); | |
425 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
426 | scm_puts (scm_charnames[i], port); | |
57b74422 GH |
427 | #ifndef EBCDIC |
428 | else if (i == '\177') | |
429 | scm_puts (scm_charnames[scm_n_charnames - 1], port); | |
430 | #endif | |
b7f3516f TT |
431 | else if (i < 0 || i > '\177') |
432 | scm_intprint (i, 8, port); | |
433 | else | |
434 | scm_putc (i, port); | |
435 | } | |
436 | else | |
437 | scm_putc (i, port); | |
0f2d19dd | 438 | } |
a51ea417 | 439 | else if (SCM_IFLAGP (exp) |
5ca6dc39 | 440 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
b7f3516f | 441 | scm_puts (SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
442 | else if (SCM_ILOCP (exp)) |
443 | { | |
b7f3516f | 444 | scm_puts ("#@", port); |
1be6b49c | 445 | scm_intprint ((long) SCM_IFRAME (exp), 10, port); |
b7f3516f | 446 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
1be6b49c | 447 | scm_intprint ((long) SCM_IDIST (exp), 10, port); |
0f2d19dd JB |
448 | } |
449 | else | |
e34f941a DH |
450 | { |
451 | /* unknown immediate value */ | |
452 | scm_ipruk ("immediate", exp, port); | |
453 | } | |
0f2d19dd | 454 | break; |
e34f941a | 455 | case scm_tc3_cons_gloc: |
0f2d19dd | 456 | /* gloc */ |
b7f3516f | 457 | scm_puts ("#@", port); |
86d31dfe MV |
458 | exp = scm_module_reverse_lookup (scm_current_module (), |
459 | SCM_GLOC_VAR (exp)); | |
0f2d19dd | 460 | goto taloop; |
e34f941a | 461 | case scm_tc3_cons: |
0f2d19dd JB |
462 | switch (SCM_TYP7 (exp)) |
463 | { | |
464 | case scm_tcs_cons_gloc: | |
465 | ||
fee7ef83 | 466 | if (SCM_STRUCT_VTABLE_DATA (exp) [scm_vtable_index_vcell] == 0) |
0f2d19dd | 467 | { |
c4f37e80 | 468 | ENTER_NESTED_DATA (pstate, exp, circref); |
8b840115 MD |
469 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) |
470 | { | |
471 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
472 | if (!print) | |
473 | goto print_struct; | |
474 | SCM_NEWSMOB (pwps, | |
475 | scm_tc16_port_with_ps, | |
54778cd3 | 476 | SCM_UNPACK (scm_cons (port, pstate->handle))); |
8b840115 MD |
477 | scm_call_generic_2 (print, exp, pwps); |
478 | } | |
479 | else | |
480 | { | |
481 | print_struct: | |
482 | scm_print_struct (exp, port, pstate); | |
483 | } | |
c4f37e80 | 484 | EXIT_NESTED_DATA (pstate); |
0f2d19dd JB |
485 | break; |
486 | } | |
487 | ||
488 | case scm_tcs_cons_imcar: | |
489 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
490 | ENTER_NESTED_DATA (pstate, exp, circref); |
491 | scm_iprlist ("(", exp, ')', port, pstate); | |
492 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
493 | break; |
494 | circref: | |
c62fbfe1 | 495 | print_circref (port, pstate, exp); |
0f2d19dd JB |
496 | break; |
497 | case scm_tcs_closures: | |
bb35f315 MV |
498 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
499 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 500 | exp, port, pstate))) |
726d810a DH |
501 | { |
502 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
503 | scm_puts ("#<procedure", port); | |
504 | scm_putc (' ', port); | |
505 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
506 | scm_putc (' ', port); | |
507 | if (SCM_PRINT_SOURCE_P) | |
508 | { | |
509 | SCM env = SCM_ENV (exp); | |
510 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
511 | SCM src = scm_unmemocopy (SCM_CODE (exp), xenv); | |
512 | ENTER_NESTED_DATA (pstate, exp, circref); | |
513 | scm_iprin1 (src, port, pstate); | |
514 | EXIT_NESTED_DATA (pstate); | |
515 | } | |
516 | else | |
517 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 518 | scm_putc ('>', port); |
726d810a | 519 | } |
0f2d19dd | 520 | break; |
0f2d19dd JB |
521 | case scm_tc7_substring: |
522 | case scm_tc7_string: | |
c62fbfe1 | 523 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 524 | { |
1be6b49c | 525 | size_t i; |
5ca6dc39 | 526 | |
b7f3516f | 527 | scm_putc ('"', port); |
d1ca2c64 | 528 | for (i = 0; i < SCM_STRING_LENGTH (exp); ++i) |
34f0f2b8 | 529 | switch (SCM_STRING_CHARS (exp)[i]) |
0f2d19dd | 530 | { |
dbef8851 | 531 | case '"': |
0f2d19dd | 532 | case '\\': |
b7f3516f | 533 | scm_putc ('\\', port); |
0f2d19dd | 534 | default: |
34f0f2b8 | 535 | scm_putc (SCM_STRING_CHARS (exp)[i], port); |
0f2d19dd | 536 | } |
b7f3516f | 537 | scm_putc ('"', port); |
0f2d19dd JB |
538 | break; |
539 | } | |
540 | else | |
34f0f2b8 | 541 | scm_lfwrite (SCM_STRING_CHARS (exp), SCM_STRING_LENGTH (exp), port); |
0f2d19dd | 542 | break; |
28b06554 | 543 | case scm_tc7_symbol: |
6662998f MV |
544 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), |
545 | SCM_SYMBOL_LENGTH (exp), | |
546 | port); | |
547 | scm_remember_upto_here_1 (exp); | |
548 | break; | |
0f2d19dd | 549 | case scm_tc7_wvect: |
c62fbfe1 | 550 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 551 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 552 | scm_puts ("#wh(", port); |
0f2d19dd | 553 | else |
b7f3516f | 554 | scm_puts ("#w(", port); |
0f2d19dd JB |
555 | goto common_vector_printer; |
556 | ||
557 | case scm_tc7_vector: | |
c62fbfe1 | 558 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 559 | scm_puts ("#(", port); |
0f2d19dd | 560 | common_vector_printer: |
9fbaf27c | 561 | { |
c014a02e ML |
562 | register long i; |
563 | long last = SCM_VECTOR_LENGTH (exp) - 1; | |
9fbaf27c | 564 | int cutp = 0; |
b17004b8 | 565 | if (pstate->fancyp && SCM_VECTOR_LENGTH (exp) > pstate->length) |
9fbaf27c MD |
566 | { |
567 | last = pstate->length - 1; | |
568 | cutp = 1; | |
569 | } | |
570 | for (i = 0; i < last; ++i) | |
571 | { | |
572 | /* CHECK_INTS; */ | |
573 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 574 | scm_putc (' ', port); |
9fbaf27c MD |
575 | } |
576 | if (i == last) | |
577 | { | |
578 | /* CHECK_INTS; */ | |
579 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
580 | } | |
581 | if (cutp) | |
b7f3516f TT |
582 | scm_puts (" ...", port); |
583 | scm_putc (')', port); | |
9fbaf27c | 584 | } |
c62fbfe1 | 585 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 586 | break; |
afe5177e | 587 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
588 | case scm_tc7_bvect: |
589 | case scm_tc7_byvect: | |
590 | case scm_tc7_svect: | |
591 | case scm_tc7_ivect: | |
592 | case scm_tc7_uvect: | |
593 | case scm_tc7_fvect: | |
594 | case scm_tc7_dvect: | |
595 | case scm_tc7_cvect: | |
5c11cc9d | 596 | #ifdef HAVE_LONG_LONGS |
0f2d19dd JB |
597 | case scm_tc7_llvect: |
598 | #endif | |
c62fbfe1 | 599 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 600 | break; |
afe5177e | 601 | #endif |
0f2d19dd | 602 | case scm_tcs_subrs: |
9de33deb MD |
603 | scm_puts (SCM_SUBR_GENERIC (exp) && *SCM_SUBR_GENERIC (exp) |
604 | ? "#<primitive-generic " | |
605 | : "#<primitive-procedure ", | |
606 | port); | |
a002f1a2 | 607 | scm_puts (SCM_SYMBOL_CHARS (SCM_SNAME (exp)), port); |
b7f3516f | 608 | scm_putc ('>', port); |
0f2d19dd JB |
609 | break; |
610 | #ifdef CCLO | |
611 | case scm_tc7_cclo: | |
56977059 MD |
612 | { |
613 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 614 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
615 | { |
616 | /* Print gsubrs as primitives */ | |
c180dfd3 | 617 | SCM name = scm_procedure_name (exp); |
56977059 MD |
618 | scm_puts ("#<primitive-procedure", port); |
619 | if (SCM_NFALSEP (name)) | |
620 | { | |
621 | scm_putc (' ', port); | |
a002f1a2 | 622 | scm_puts (SCM_SYMBOL_CHARS (name), port); |
56977059 MD |
623 | } |
624 | } | |
625 | else | |
626 | { | |
627 | scm_puts ("#<compiled-closure ", port); | |
628 | scm_iprin1 (proc, port, pstate); | |
629 | } | |
630 | scm_putc ('>', port); | |
631 | } | |
0f2d19dd JB |
632 | break; |
633 | #endif | |
c180dfd3 MD |
634 | case scm_tc7_pws: |
635 | scm_puts ("#<procedure-with-setter", port); | |
636 | { | |
637 | SCM name = scm_procedure_name (exp); | |
638 | if (SCM_NFALSEP (name)) | |
639 | { | |
640 | scm_putc (' ', port); | |
b24b5e13 | 641 | scm_display (name, port); |
c180dfd3 MD |
642 | } |
643 | } | |
644 | scm_putc ('>', port); | |
645 | break; | |
0f2d19dd | 646 | case scm_tc7_port: |
5ca6dc39 JB |
647 | { |
648 | register long i = SCM_PTOBNUM (exp); | |
649 | if (i < scm_numptob | |
650 | && scm_ptobs[i].print | |
651 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 652 | break; |
5ca6dc39 JB |
653 | goto punk; |
654 | } | |
655 | case scm_tc7_smob: | |
7a7f7c53 DH |
656 | ENTER_NESTED_DATA (pstate, exp, circref); |
657 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
658 | EXIT_NESTED_DATA (pstate); | |
659 | break; | |
0f2d19dd | 660 | default: |
a51ea417 MD |
661 | punk: |
662 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
663 | } |
664 | } | |
665 | } | |
666 | ||
c62fbfe1 MD |
667 | /* Print states are necessary for circular reference safe printing. |
668 | * They are also expensive to allocate. Therefore print states are | |
669 | * kept in a pool so that they can be reused. | |
670 | */ | |
1cc91f1b | 671 | |
bb35f315 MV |
672 | /* The PORT argument can also be a print-state/port pair, which will |
673 | * then be used instead of allocating a new print state. This is | |
674 | * useful for continuing a chain of print calls from Scheme. */ | |
675 | ||
a51ea417 | 676 | void |
1bbd0b84 | 677 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 678 | { |
c4f37e80 MV |
679 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
680 | SCM pstate_scm; | |
c62fbfe1 MD |
681 | scm_print_state *pstate; |
682 | ||
bb35f315 MV |
683 | /* If PORT is a print-state/port pair, use that. Else create a new |
684 | print-state. */ | |
c4f37e80 | 685 | |
0c95b57d | 686 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 687 | { |
52235e71 MD |
688 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
689 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
690 | } |
691 | else | |
c62fbfe1 | 692 | { |
c4f37e80 MV |
693 | /* First try to allocate a print state from the pool */ |
694 | SCM_DEFER_INTS; | |
695 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) | |
696 | { | |
697 | handle = SCM_CDR (print_state_pool); | |
698 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
699 | } | |
700 | SCM_ALLOW_INTS; | |
54778cd3 | 701 | if (SCM_FALSEP (handle)) |
c4f37e80 MV |
702 | handle = scm_cons (make_print_state (), SCM_EOL); |
703 | pstate_scm = SCM_CAR (handle); | |
c62fbfe1 | 704 | } |
c62fbfe1 | 705 | |
c4f37e80 | 706 | pstate = SCM_PRINT_STATE (pstate_scm); |
c62fbfe1 MD |
707 | pstate->writingp = writingp; |
708 | scm_iprin1 (exp, port, pstate); | |
709 | ||
bb35f315 MV |
710 | /* Return print state to pool if it has been created above and |
711 | hasn't escaped to Scheme. */ | |
712 | ||
54778cd3 | 713 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 MV |
714 | { |
715 | SCM_DEFER_INTS; | |
716 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
717 | SCM_SETCDR (print_state_pool, handle); | |
718 | SCM_ALLOW_INTS; | |
719 | } | |
a51ea417 MD |
720 | } |
721 | ||
0f2d19dd JB |
722 | |
723 | /* Print an integer. | |
724 | */ | |
1cc91f1b | 725 | |
0f2d19dd | 726 | void |
1bbd0b84 | 727 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
728 | { |
729 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 730 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
731 | } |
732 | ||
733 | /* Print an object of unrecognized type. | |
734 | */ | |
1cc91f1b | 735 | |
0f2d19dd | 736 | void |
1bbd0b84 | 737 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 738 | { |
b7f3516f TT |
739 | scm_puts ("#<unknown-", port); |
740 | scm_puts (hdr, port); | |
0f2d19dd JB |
741 | if (SCM_CELLP (ptr)) |
742 | { | |
b7f3516f | 743 | scm_puts (" (0x", port); |
54778cd3 | 744 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 745 | scm_puts (" . 0x", port); |
54778cd3 | 746 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 747 | scm_puts (") @", port); |
0f2d19dd | 748 | } |
b7f3516f | 749 | scm_puts (" 0x", port); |
54778cd3 | 750 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 751 | scm_putc ('>', port); |
0f2d19dd JB |
752 | } |
753 | ||
1cc91f1b | 754 | |
22a52da1 DH |
755 | /* Print a list. The list may be either a list of ordinary data, or it may be |
756 | a list that represents code. Lists that represent code may contain gloc | |
757 | cells. | |
758 | */ | |
0f2d19dd | 759 | void |
1bbd0b84 | 760 | scm_iprlist (char *hdr,SCM exp,int tlr,SCM port,scm_print_state *pstate) |
0f2d19dd | 761 | { |
c62fbfe1 | 762 | register SCM hare, tortoise; |
c014a02e | 763 | long floor = pstate->top - 2; |
b7f3516f | 764 | scm_puts (hdr, port); |
0f2d19dd | 765 | /* CHECK_INTS; */ |
c62fbfe1 MD |
766 | if (pstate->fancyp) |
767 | goto fancy_printing; | |
768 | ||
769 | /* Run a hare and tortoise so that total time complexity will be | |
770 | O(depth * N) instead of O(N^2). */ | |
771 | hare = SCM_CDR (exp); | |
772 | tortoise = exp; | |
0c95b57d | 773 | while (SCM_ECONSP (hare)) |
c62fbfe1 | 774 | { |
54778cd3 | 775 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
776 | goto fancy_printing; |
777 | hare = SCM_CDR (hare); | |
2fab3faa | 778 | if (SCM_IMP (hare) || SCM_NECONSP (hare)) |
c62fbfe1 MD |
779 | break; |
780 | hare = SCM_CDR (hare); | |
781 | tortoise = SCM_CDR (tortoise); | |
782 | } | |
783 | ||
784 | /* No cdr cycles intrinsic to this list */ | |
785 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
22a52da1 | 786 | for (exp = SCM_CDR (exp); SCM_ECONSP (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 787 | { |
c014a02e | 788 | register long i; |
5ca6dc39 | 789 | |
c62fbfe1 | 790 | for (i = floor; i >= 0; --i) |
230d095f | 791 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
792 | goto circref; |
793 | PUSH_REF (pstate, exp); | |
b7f3516f | 794 | scm_putc (' ', port); |
0f2d19dd | 795 | /* CHECK_INTS; */ |
c62fbfe1 | 796 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 797 | } |
22a52da1 | 798 | if (!SCM_NULLP (exp)) |
0f2d19dd | 799 | { |
b7f3516f | 800 | scm_puts (" . ", port); |
c62fbfe1 | 801 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 802 | } |
c62fbfe1 | 803 | |
a51ea417 | 804 | end: |
b7f3516f | 805 | scm_putc (tlr, port); |
c62fbfe1 | 806 | pstate->top = floor + 2; |
a51ea417 | 807 | return; |
c62fbfe1 MD |
808 | |
809 | fancy_printing: | |
810 | { | |
c014a02e | 811 | long n = pstate->length; |
c62fbfe1 MD |
812 | |
813 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
814 | exp = SCM_CDR (exp); --n; | |
22a52da1 | 815 | for (; SCM_ECONSP (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 816 | { |
c014a02e | 817 | register unsigned long i; |
5ca6dc39 | 818 | |
c62fbfe1 | 819 | for (i = 0; i < pstate->top; ++i) |
230d095f | 820 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
821 | goto fancy_circref; |
822 | if (pstate->fancyp) | |
823 | { | |
824 | if (n == 0) | |
825 | { | |
b7f3516f | 826 | scm_puts (" ...", port); |
c62fbfe1 MD |
827 | goto skip_tail; |
828 | } | |
829 | else | |
830 | --n; | |
831 | } | |
832 | PUSH_REF(pstate, exp); | |
833 | ++pstate->list_offset; | |
b7f3516f | 834 | scm_putc (' ', port); |
c62fbfe1 MD |
835 | /* CHECK_INTS; */ |
836 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
837 | } | |
838 | } | |
839 | if (SCM_NNULLP (exp)) | |
840 | { | |
b7f3516f | 841 | scm_puts (" . ", port); |
c62fbfe1 MD |
842 | scm_iprin1 (exp, port, pstate); |
843 | } | |
844 | skip_tail: | |
845 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 846 | goto end; |
a51ea417 | 847 | |
c62fbfe1 MD |
848 | fancy_circref: |
849 | pstate->list_offset -= pstate->top - floor - 2; | |
850 | ||
851 | circref: | |
b7f3516f | 852 | scm_puts (" . ", port); |
c62fbfe1 MD |
853 | print_circref (port, pstate, exp); |
854 | goto end; | |
0f2d19dd JB |
855 | } |
856 | ||
857 | \f | |
858 | ||
bb35f315 MV |
859 | int |
860 | scm_valid_oport_value_p (SCM val) | |
861 | { | |
368cf54d GB |
862 | return (SCM_OPOUTPORTP (val) |
863 | || (SCM_PORT_WITH_PS_P (val) | |
864 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
865 | } |
866 | ||
8b840115 | 867 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 868 | |
0f2d19dd | 869 | SCM |
1bbd0b84 | 870 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
871 | { |
872 | if (SCM_UNBNDP (port)) | |
873 | port = scm_cur_outp; | |
3eb7e6ee JB |
874 | |
875 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 876 | |
a51ea417 | 877 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
878 | #ifdef HAVE_PIPE |
879 | # ifdef EPIPE | |
880 | if (EPIPE == errno) | |
881 | scm_close_port (port); | |
882 | # endif | |
883 | #endif | |
884 | return SCM_UNSPECIFIED; | |
885 | } | |
886 | ||
887 | ||
8b840115 | 888 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 889 | |
0f2d19dd | 890 | SCM |
1bbd0b84 | 891 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
892 | { |
893 | if (SCM_UNBNDP (port)) | |
894 | port = scm_cur_outp; | |
3eb7e6ee JB |
895 | |
896 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 897 | |
a51ea417 | 898 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
899 | #ifdef HAVE_PIPE |
900 | # ifdef EPIPE | |
901 | if (EPIPE == errno) | |
902 | scm_close_port (port); | |
903 | # endif | |
904 | #endif | |
905 | return SCM_UNSPECIFIED; | |
906 | } | |
907 | ||
70d63753 GB |
908 | |
909 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
910 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
911 | "Write @var{message} to @var{destination}, defaulting to\n" |
912 | "the current output port.\n" | |
913 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
914 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
915 | "the escapes are replaced with corresponding members of\n" | |
916 | "@var{ARGS}:\n" | |
917 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
918 | "using @code{write}.\n" | |
919 | "If @var{destination} is @code{#t}, then use the current output\n" | |
920 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
921 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
922 | #define FUNC_NAME s_scm_simple_format |
923 | { | |
924 | SCM answer = SCM_UNSPECIFIED; | |
925 | int fReturnString = 0; | |
926 | int writingp; | |
927 | char *start; | |
b24b5e13 | 928 | char *end; |
70d63753 GB |
929 | char *p; |
930 | ||
daba1a71 MD |
931 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
932 | { | |
933 | destination = scm_cur_outp; | |
934 | } | |
935 | else if (SCM_FALSEP (destination)) | |
936 | { | |
937 | fReturnString = 1; | |
938 | destination = scm_mkstrport (SCM_INUM0, | |
939 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
940 | SCM_OPN | SCM_WRTNG, | |
941 | FUNC_NAME); | |
942 | } | |
943 | else | |
944 | { | |
945 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
946 | destination = SCM_COERCE_OUTPORT (destination); | |
947 | } | |
948 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 949 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 950 | |
34f0f2b8 | 951 | start = SCM_STRING_CHARS (message); |
b24b5e13 DH |
952 | end = start + SCM_STRING_LENGTH (message); |
953 | for (p = start; p != end; ++p) | |
70d63753 GB |
954 | if (*p == '~') |
955 | { | |
b24b5e13 | 956 | if (++p == end) |
6662998f MV |
957 | break; |
958 | ||
959 | switch (*p) | |
960 | { | |
961 | case 'A': case 'a': | |
962 | writingp = 0; | |
963 | break; | |
964 | case 'S': case 's': | |
965 | writingp = 1; | |
966 | break; | |
967 | case '~': | |
968 | scm_lfwrite (start, p - start, destination); | |
969 | start = p + 1; | |
970 | continue; | |
971 | case '%': | |
972 | scm_newline (destination); | |
973 | start = p + 1; | |
974 | continue; | |
975 | default: | |
976 | scm_misc_error (s_scm_simple_format, | |
977 | "FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", | |
978 | SCM_LIST1 (SCM_MAKE_CHAR (*p))); | |
979 | ||
980 | } | |
70d63753 | 981 | |
6662998f MV |
982 | |
983 | if (!SCM_CONSP (args)) | |
984 | scm_misc_error (s_scm_simple_format, "FORMAT: Missing argument for ~~~A", | |
985 | SCM_LIST1 (SCM_MAKE_CHAR (*p))); | |
986 | ||
70d63753 GB |
987 | scm_lfwrite (start, p - start - 1, destination); |
988 | scm_prin1 (SCM_CAR (args), destination, writingp); | |
989 | args = SCM_CDR (args); | |
990 | start = p + 1; | |
991 | } | |
6662998f | 992 | |
70d63753 | 993 | scm_lfwrite (start, p - start, destination); |
6662998f MV |
994 | if (args != SCM_EOL) |
995 | scm_misc_error (s_scm_simple_format, | |
996 | "FORMAT: ~A superfluous arguments", SCM_LIST1 (scm_length (args))); | |
70d63753 GB |
997 | |
998 | if (fReturnString) | |
999 | answer = scm_strport_to_string (destination); | |
1000 | ||
daba1a71 | 1001 | return scm_return_first (answer, message); |
70d63753 GB |
1002 | } |
1003 | #undef FUNC_NAME | |
1004 | ||
1005 | ||
3b3b36dd | 1006 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1007 | (SCM port), |
eca65e90 | 1008 | "Send a newline to @var{port}.") |
1bbd0b84 | 1009 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1010 | { |
1011 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1012 | port = scm_cur_outp; |
3eb7e6ee | 1013 | |
3b3b36dd | 1014 | SCM_VALIDATE_OPORT_VALUE (1,port); |
bb35f315 | 1015 | |
0ef4ae82 | 1016 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1017 | return SCM_UNSPECIFIED; |
1018 | } | |
1bbd0b84 | 1019 | #undef FUNC_NAME |
0f2d19dd | 1020 | |
3b3b36dd | 1021 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1022 | (SCM chr, SCM port), |
eca65e90 | 1023 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1024 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1025 | { |
1026 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1027 | port = scm_cur_outp; |
3eb7e6ee | 1028 | |
7866a09b | 1029 | SCM_VALIDATE_CHAR (1,chr); |
3b3b36dd | 1030 | SCM_VALIDATE_OPORT_VALUE (2,port); |
bb35f315 | 1031 | |
7866a09b | 1032 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1033 | #ifdef HAVE_PIPE |
1034 | # ifdef EPIPE | |
1035 | if (EPIPE == errno) | |
1036 | scm_close_port (port); | |
1037 | # endif | |
1038 | #endif | |
1039 | return SCM_UNSPECIFIED; | |
1040 | } | |
1bbd0b84 | 1041 | #undef FUNC_NAME |
0f2d19dd | 1042 | |
0f2d19dd JB |
1043 | \f |
1044 | ||
bb35f315 | 1045 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1046 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1047 | * containing PORT and PSTATE. This object can be used as the port for | |
1048 | * display/write etc to continue the current print chain. The REVEALED | |
1049 | * field of PSTATE is set to true to indicate that the print state has | |
1050 | * escaped to Scheme and thus has to be freed by the GC. | |
1051 | */ | |
1052 | ||
92c2555f | 1053 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1054 | |
1055 | /* Print exactly as the port itself would */ | |
1056 | ||
1057 | static int | |
e841c3e0 | 1058 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1059 | { |
1060 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1061 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1062 | } | |
c4f37e80 MV |
1063 | |
1064 | SCM | |
1bbd0b84 | 1065 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1066 | { |
c19bc088 | 1067 | SCM pwps; |
bb35f315 | 1068 | SCM pair = scm_cons (port, pstate->handle); |
54778cd3 | 1069 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (pair)); |
bb35f315 | 1070 | pstate->revealed = 1; |
fdc28395 | 1071 | return scm_call_2 (proc, exp, pwps); |
c19bc088 MD |
1072 | } |
1073 | ||
a1ec6916 | 1074 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 2, 0, 0, |
1bbd0b84 | 1075 | (SCM port, SCM pstate), |
71331188 MG |
1076 | "Create a new port which behaves like @var{port}, but with an\n" |
1077 | "included print state @var{pstate}.") | |
1bbd0b84 | 1078 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 MD |
1079 | { |
1080 | SCM pwps; | |
3b3b36dd GB |
1081 | SCM_VALIDATE_OPORT_VALUE (1,port); |
1082 | SCM_VALIDATE_PRINTSTATE (2,pstate); | |
c19bc088 | 1083 | port = SCM_COERCE_OUTPORT (port); |
54778cd3 | 1084 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (scm_cons (port, pstate))); |
c19bc088 MD |
1085 | return pwps; |
1086 | } | |
1bbd0b84 | 1087 | #undef FUNC_NAME |
c19bc088 | 1088 | |
a1ec6916 | 1089 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1090 | (SCM port), |
71331188 MG |
1091 | "Return the print state of the port @var{port}. If @var{port}\n" |
1092 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1093 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1094 | { |
368cf54d GB |
1095 | if (SCM_PORT_WITH_PS_P (port)) |
1096 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1097 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1098 | return SCM_BOOL_F; |
276dd677 | 1099 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1100 | } |
1bbd0b84 | 1101 | #undef FUNC_NAME |
bb35f315 | 1102 | |
c4f37e80 | 1103 | \f |
1cc91f1b | 1104 | |
0f2d19dd JB |
1105 | void |
1106 | scm_init_print () | |
0f2d19dd | 1107 | { |
c19bc088 | 1108 | SCM vtable, layout, type; |
4bfdf158 | 1109 | |
b7ff98dd | 1110 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
3ce4544c | 1111 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
4bfdf158 | 1112 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
c19bc088 | 1113 | type = scm_make_struct (vtable, SCM_INUM0, SCM_LIST1 (layout)); |
38ae064c | 1114 | scm_set_struct_vtable_name_x (type, scm_str2symbol ("print-state")); |
c62fbfe1 | 1115 | print_state_pool = scm_permanent_object (scm_cons (type, SCM_EOL)); |
c4f37e80 | 1116 | |
bb35f315 | 1117 | scm_print_state_vtable = type; |
c4f37e80 | 1118 | |
c19bc088 MD |
1119 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1120 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1121 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1122 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
c19bc088 | 1123 | |
8dc9439f | 1124 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 1125 | #include "libguile/print.x" |
8dc9439f | 1126 | #endif |
0f2d19dd | 1127 | } |
89e00824 ML |
1128 | |
1129 | /* | |
1130 | Local Variables: | |
1131 | c-file-style: "gnu" | |
1132 | End: | |
1133 | */ |