Commit | Line | Data |
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15635be5 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
73be1d9e MV |
8 | * This library 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 GNU | |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd JB |
19 | \f |
20 | ||
e6e2e95a MD |
21 | #include <errno.h> |
22 | ||
a0599745 MD |
23 | #include "libguile/_scm.h" |
24 | #include "libguile/chars.h" | |
a002f1a2 | 25 | #include "libguile/continuations.h" |
a0599745 MD |
26 | #include "libguile/smob.h" |
27 | #include "libguile/eval.h" | |
28 | #include "libguile/macros.h" | |
29 | #include "libguile/procprop.h" | |
30 | #include "libguile/read.h" | |
31 | #include "libguile/weaks.h" | |
32 | #include "libguile/unif.h" | |
33 | #include "libguile/alist.h" | |
34 | #include "libguile/struct.h" | |
35 | #include "libguile/objects.h" | |
36 | #include "libguile/ports.h" | |
37 | #include "libguile/root.h" | |
38 | #include "libguile/strings.h" | |
39 | #include "libguile/strports.h" | |
40 | #include "libguile/vectors.h" | |
c96d76b8 | 41 | #include "libguile/lang.h" |
a0599745 MD |
42 | |
43 | #include "libguile/validate.h" | |
44 | #include "libguile/print.h" | |
0f2d19dd JB |
45 | \f |
46 | ||
47 | /* {Names of immediate symbols} | |
48 | * | |
49 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
50 | */ | |
51 | ||
e17d318f DH |
52 | /* This table must agree with the list of flags in tags.h. */ |
53 | static const char *iflagnames[] = | |
54 | { | |
55 | "#f", | |
56 | "#t", | |
57 | "#<undefined>", | |
58 | "#<eof>", | |
59 | "()", | |
60 | "#<unspecified>", | |
61 | ||
62 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
63 | "#<unbound>", | |
64 | ||
65 | /* Elisp nil value. This is its Scheme name; whenever it's printed in | |
66 | * Elisp, it should appear as the symbol `nil'. */ | |
67 | "#nil" | |
68 | }; | |
69 | ||
70 | /* This table must agree with the list of SCM_IM_ constants in tags.h */ | |
0f2d19dd JB |
71 | char *scm_isymnames[] = |
72 | { | |
e17d318f DH |
73 | /* Short instructions */ |
74 | ||
0f2d19dd JB |
75 | "#@and", |
76 | "#@begin", | |
77 | "#@case", | |
78 | "#@cond", | |
79 | "#@do", | |
80 | "#@if", | |
81 | "#@lambda", | |
82 | "#@let", | |
83 | "#@let*", | |
84 | "#@letrec", | |
85 | "#@or", | |
86 | "#@quote", | |
87 | "#@set!", | |
e17d318f DH |
88 | |
89 | ||
90 | /* Long instructions */ | |
91 | ||
0f2d19dd | 92 | "#@define", |
0f2d19dd JB |
93 | "#@apply", |
94 | "#@call-with-current-continuation", | |
4df91bd6 | 95 | "#@dispatch", |
43c667e9 MD |
96 | "#@slot-ref", |
97 | "#@slot-set!", | |
5623a9b4 | 98 | "#@delay", |
28d52ebb | 99 | "#@future", |
24d1fde8 | 100 | "#@call-with-values", |
2a6f7afe DH |
101 | "#@else", |
102 | "#@arrow", | |
24d1fde8 | 103 | |
e17d318f DH |
104 | /* Multi-language support */ |
105 | "#@nil-cond", | |
106 | "#@bind" | |
0f2d19dd JB |
107 | }; |
108 | ||
92c2555f | 109 | scm_t_option scm_print_opts[] = { |
726d810a DH |
110 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
111 | "Hook for printing closures (should handle macros as well)." }, | |
84f6a34a MD |
112 | { SCM_OPTION_BOOLEAN, "source", 0, |
113 | "Print closures with source." } | |
e6e4c9af MD |
114 | }; |
115 | ||
a1ec6916 | 116 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 117 | (SCM setting), |
71331188 | 118 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
119 | "this procedure directly, use the procedures\n" |
120 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
121 | "and @code{print-options}.") | |
1bbd0b84 | 122 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 123 | { |
a51ea417 | 124 | SCM ans = scm_options (setting, |
b7ff98dd MD |
125 | scm_print_opts, |
126 | SCM_N_PRINT_OPTIONS, | |
1bbd0b84 | 127 | FUNC_NAME); |
e6e4c9af MD |
128 | return ans; |
129 | } | |
1bbd0b84 | 130 | #undef FUNC_NAME |
e6e4c9af | 131 | |
0f2d19dd JB |
132 | \f |
133 | /* {Printing of Scheme Objects} | |
134 | */ | |
135 | ||
a51ea417 | 136 | /* Detection of circular references. |
c62fbfe1 MD |
137 | * |
138 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
139 | * time complexity (O (depth * N)), The printer code can be |
140 | * rewritten to be O(N). | |
a51ea417 | 141 | */ |
c62fbfe1 | 142 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 143 | do { \ |
c62fbfe1 MD |
144 | pstate->ref_stack[pstate->top++] = (obj); \ |
145 | if (pstate->top == pstate->ceiling) \ | |
146 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 147 | } while(0) |
a51ea417 | 148 | |
c62fbfe1 | 149 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 150 | do { \ |
5ca6dc39 | 151 | register unsigned long i; \ |
c62fbfe1 | 152 | for (i = 0; i < pstate->top; ++i) \ |
230d095f | 153 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
c62fbfe1 MD |
154 | goto label; \ |
155 | if (pstate->fancyp) \ | |
156 | { \ | |
157 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
158 | { \ | |
b7f3516f | 159 | scm_putc ('#', port); \ |
c62fbfe1 MD |
160 | return; \ |
161 | } \ | |
162 | } \ | |
163 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 164 | } while(0) |
a51ea417 | 165 | |
c62fbfe1 MD |
166 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
167 | ||
d5cf5324 DH |
168 | SCM scm_print_state_vtable = SCM_BOOL_F; |
169 | static SCM print_state_pool = SCM_EOL; | |
dfd03fb9 | 170 | SCM_MUTEX (print_state_mutex); |
c4f37e80 | 171 | |
f843a84c | 172 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 173 | |
3b3b36dd | 174 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 175 | (), |
d5cf5324 | 176 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
177 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
178 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 179 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 180 | { |
d5cf5324 DH |
181 | if (!SCM_NULLP (print_state_pool)) |
182 | return SCM_CAR (print_state_pool); | |
a0adfbf0 | 183 | else |
0a284a4e | 184 | return SCM_BOOL_F; |
c62fbfe1 | 185 | } |
1bbd0b84 GB |
186 | #undef FUNC_NAME |
187 | ||
c62fbfe1 MD |
188 | #endif |
189 | ||
190 | #define PSTATE_SIZE 50L | |
191 | ||
698c0295 | 192 | static SCM |
1bbd0b84 | 193 | make_print_state (void) |
698c0295 | 194 | { |
d5cf5324 DH |
195 | SCM print_state |
196 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 197 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 198 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
34d19ef6 | 199 | pstate->ref_stack = SCM_WRITABLE_VELTS (pstate->ref_vect); |
b17004b8 | 200 | pstate->ceiling = SCM_VECTOR_LENGTH (pstate->ref_vect); |
698c0295 MD |
201 | return print_state; |
202 | } | |
1cc91f1b | 203 | |
c62fbfe1 MD |
204 | SCM |
205 | scm_make_print_state () | |
c62fbfe1 | 206 | { |
230d095f | 207 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
208 | |
209 | /* First try to allocate a print state from the pool */ | |
dfd03fb9 | 210 | scm_i_plugin_mutex_lock (&print_state_mutex); |
d5cf5324 | 211 | if (!SCM_NULLP (print_state_pool)) |
698c0295 | 212 | { |
d5cf5324 DH |
213 | answer = SCM_CAR (print_state_pool); |
214 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 215 | } |
dfd03fb9 | 216 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
698c0295 | 217 | |
230d095f | 218 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
c62fbfe1 | 219 | } |
a51ea417 | 220 | |
698c0295 | 221 | void |
6e8d25a6 | 222 | scm_free_print_state (SCM print_state) |
698c0295 MD |
223 | { |
224 | SCM handle; | |
225 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
226 | /* Cleanup before returning print state to pool. | |
227 | * It is better to do it here. Doing it in scm_prin1 | |
228 | * would cost more since that function is called much more | |
229 | * often. | |
230 | */ | |
231 | pstate->fancyp = 0; | |
bb35f315 | 232 | pstate->revealed = 0; |
dfd03fb9 | 233 | scm_i_plugin_mutex_lock (&print_state_mutex); |
16d4699b | 234 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 235 | print_state_pool = handle; |
dfd03fb9 MD |
236 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
237 | } | |
238 | ||
239 | SCM | |
240 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
241 | { | |
242 | if (SCM_UNBNDP (print_state)) | |
243 | { | |
244 | if (SCM_PORT_WITH_PS_P (port)) | |
245 | return port; | |
246 | else | |
247 | print_state = scm_make_print_state (); | |
248 | /* port does not need to be coerced since it doesn't have ps */ | |
249 | } | |
250 | else | |
251 | port = SCM_COERCE_OUTPORT (port); | |
252 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
253 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 254 | } |
1cc91f1b | 255 | |
a51ea417 | 256 | static void |
1bbd0b84 | 257 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 258 | { |
b17004b8 | 259 | unsigned long int old_size = SCM_VECTOR_LENGTH (pstate->ref_vect); |
34d19ef6 | 260 | SCM const *old_elts = SCM_VELTS (pstate->ref_vect); |
b17004b8 | 261 | unsigned long int new_size = 2 * pstate->ceiling; |
00ffa0e7 | 262 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
263 | unsigned long int i; |
264 | ||
265 | for (i = 0; i != old_size; ++i) | |
34d19ef6 | 266 | SCM_VECTOR_SET (new_vect, i, old_elts [i]); |
b17004b8 DH |
267 | |
268 | pstate->ref_vect = new_vect; | |
34d19ef6 | 269 | pstate->ref_stack = SCM_WRITABLE_VELTS(new_vect); |
bf685b6d | 270 | pstate->ceiling = new_size; |
a51ea417 MD |
271 | } |
272 | ||
1cc91f1b | 273 | |
a51ea417 | 274 | static void |
34d19ef6 | 275 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 276 | { |
c014a02e ML |
277 | register long i; |
278 | long self = pstate->top - 1; | |
c62fbfe1 MD |
279 | i = pstate->top - 1; |
280 | if (SCM_CONSP (pstate->ref_stack[i])) | |
281 | { | |
282 | while (i > 0) | |
283 | { | |
d5cf5324 | 284 | if (!SCM_CONSP (pstate->ref_stack[i - 1]) |
230d095f DH |
285 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
286 | pstate->ref_stack[i])) | |
c62fbfe1 MD |
287 | break; |
288 | --i; | |
289 | } | |
290 | self = i; | |
291 | } | |
292 | for (i = pstate->top - 1; 1; --i) | |
230d095f | 293 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
c62fbfe1 | 294 | break; |
b7f3516f | 295 | scm_putc ('#', port); |
c62fbfe1 | 296 | scm_intprint (i - self, 10, port); |
b7f3516f | 297 | scm_putc ('#', port); |
a51ea417 MD |
298 | } |
299 | ||
6662998f MV |
300 | /* Print the name of a symbol. */ |
301 | ||
302 | void | |
303 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
304 | { | |
c6b49e89 MV |
305 | /* This points to the first character that has not yet been written to the |
306 | * port. */ | |
307 | size_t pos = 0; | |
308 | /* This points to the character we're currently looking at. */ | |
6662998f | 309 | size_t end; |
c6b49e89 MV |
310 | /* If the name contains weird characters, we'll escape them with |
311 | * backslashes and set this flag; it indicates that we should surround the | |
312 | * name with "#{" and "}#". */ | |
313 | int weird = 0; | |
314 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
315 | * weird because of other characters, backslahes need to be escaped too. | |
316 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
317 | * to the backslash. Then if the name turns out to be weird, we re-process | |
318 | * everything starting from mw_pos. */ | |
319 | int maybe_weird = 0; | |
6662998f | 320 | size_t mw_pos = 0; |
c6b49e89 MV |
321 | /* If the name is purely numeric, then it's weird as a whole, even though |
322 | * none of the individual characters is weird. But we won't know this | |
323 | * until we reach the end of the name. This flag describes the part of the | |
324 | * name we've looked at so far. */ | |
325 | int all_digits = 1; | |
6662998f | 326 | |
c6b49e89 | 327 | if (len == 0 || str[0] == '\'' || str[0] == ':' || str[len-1] == ':') |
6662998f MV |
328 | { |
329 | scm_lfwrite ("#{", 2, port); | |
330 | weird = 1; | |
331 | } | |
c6b49e89 | 332 | |
6662998f MV |
333 | for (end = pos; end < len; ++end) |
334 | switch (str[end]) | |
335 | { | |
336 | #ifdef BRACKETS_AS_PARENS | |
337 | case '[': | |
338 | case ']': | |
339 | #endif | |
340 | case '(': | |
341 | case ')': | |
342 | case '"': | |
343 | case ';': | |
c6b49e89 | 344 | case '#': |
6662998f MV |
345 | case SCM_WHITE_SPACES: |
346 | case SCM_LINE_INCREMENTORS: | |
c6b49e89 | 347 | all_digits = 0; |
6662998f MV |
348 | weird_handler: |
349 | if (maybe_weird) | |
350 | { | |
351 | end = mw_pos; | |
352 | maybe_weird = 0; | |
353 | } | |
354 | if (!weird) | |
355 | { | |
356 | scm_lfwrite ("#{", 2, port); | |
357 | weird = 1; | |
358 | } | |
359 | if (pos < end) | |
c6b49e89 | 360 | scm_lfwrite (str + pos, end - pos, port); |
6662998f MV |
361 | { |
362 | char buf[2]; | |
363 | buf[0] = '\\'; | |
364 | buf[1] = str[end]; | |
365 | scm_lfwrite (buf, 2, port); | |
366 | } | |
367 | pos = end + 1; | |
368 | break; | |
369 | case '\\': | |
c6b49e89 | 370 | all_digits = 0; |
6662998f MV |
371 | if (weird) |
372 | goto weird_handler; | |
373 | if (!maybe_weird) | |
374 | { | |
375 | maybe_weird = 1; | |
376 | mw_pos = pos; | |
377 | } | |
378 | break; | |
c6b49e89 MV |
379 | case '0': case '1': case '2': case '3': case '4': |
380 | case '5': case '6': case '7': case '8': case '9': | |
6662998f MV |
381 | break; |
382 | default: | |
c6b49e89 | 383 | all_digits = 0; |
6662998f MV |
384 | break; |
385 | } | |
c6b49e89 MV |
386 | if (all_digits) |
387 | { | |
388 | scm_lfwrite ("#{", 2, port); | |
389 | weird = 1; | |
390 | } | |
6662998f MV |
391 | if (pos < end) |
392 | scm_lfwrite (str + pos, end - pos, port); | |
393 | if (weird) | |
394 | scm_lfwrite ("}#", 2, port); | |
395 | } | |
396 | ||
c62fbfe1 | 397 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 398 | */ |
8b840115 MD |
399 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
400 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 401 | |
0f2d19dd | 402 | void |
1bbd0b84 | 403 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 404 | { |
54778cd3 | 405 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 406 | { |
e34f941a DH |
407 | case scm_tc3_closure: |
408 | case scm_tc3_tc7_1: | |
409 | case scm_tc3_tc7_2: | |
410 | /* These tc3 tags should never occur in an immediate value. They are | |
411 | * only used in cell types of non-immediates, i. e. the value returned | |
412 | * by SCM_CELL_TYPE (exp) can use these tags. | |
413 | */ | |
414 | scm_ipruk ("immediate", exp, port); | |
415 | break; | |
416 | case scm_tc3_int_1: | |
417 | case scm_tc3_int_2: | |
0f2d19dd JB |
418 | scm_intprint (SCM_INUM (exp), 10, port); |
419 | break; | |
e34f941a | 420 | case scm_tc3_imm24: |
7866a09b | 421 | if (SCM_CHARP (exp)) |
0f2d19dd | 422 | { |
e34f941a | 423 | long i = SCM_CHAR (exp); |
5ca6dc39 | 424 | |
b7f3516f TT |
425 | if (SCM_WRITINGP (pstate)) |
426 | { | |
427 | scm_puts ("#\\", port); | |
428 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
429 | scm_puts (scm_charnames[i], port); | |
57b74422 GH |
430 | #ifndef EBCDIC |
431 | else if (i == '\177') | |
432 | scm_puts (scm_charnames[scm_n_charnames - 1], port); | |
433 | #endif | |
b7f3516f TT |
434 | else if (i < 0 || i > '\177') |
435 | scm_intprint (i, 8, port); | |
436 | else | |
437 | scm_putc (i, port); | |
438 | } | |
439 | else | |
440 | scm_putc (i, port); | |
0f2d19dd | 441 | } |
a51ea417 | 442 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
443 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
444 | { | |
445 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
446 | } | |
447 | else if (SCM_ISYMP (exp) | |
5ca6dc39 | 448 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
e17d318f | 449 | { |
b7f3516f | 450 | scm_puts (SCM_ISYMCHARS (exp), port); |
e17d318f | 451 | } |
0f2d19dd JB |
452 | else if (SCM_ILOCP (exp)) |
453 | { | |
b7f3516f | 454 | scm_puts ("#@", port); |
1be6b49c | 455 | scm_intprint ((long) SCM_IFRAME (exp), 10, port); |
b7f3516f | 456 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
1be6b49c | 457 | scm_intprint ((long) SCM_IDIST (exp), 10, port); |
0f2d19dd JB |
458 | } |
459 | else | |
e34f941a DH |
460 | { |
461 | /* unknown immediate value */ | |
462 | scm_ipruk ("immediate", exp, port); | |
463 | } | |
0f2d19dd | 464 | break; |
e34f941a | 465 | case scm_tc3_cons: |
0f2d19dd JB |
466 | switch (SCM_TYP7 (exp)) |
467 | { | |
904a077d MV |
468 | case scm_tcs_struct: |
469 | { | |
470 | ENTER_NESTED_DATA (pstate, exp, circref); | |
471 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
472 | { | |
473 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
474 | if (!print) | |
475 | goto print_struct; | |
dfd03fb9 | 476 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 477 | pstate->revealed = 1; |
904a077d MV |
478 | scm_call_generic_2 (print, exp, pwps); |
479 | } | |
480 | else | |
481 | { | |
482 | print_struct: | |
483 | scm_print_struct (exp, port, pstate); | |
484 | } | |
485 | EXIT_NESTED_DATA (pstate); | |
486 | } | |
487 | break; | |
0f2d19dd JB |
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; |
534c55a9 DH |
521 | case scm_tc7_number: |
522 | switch SCM_TYP16 (exp) { | |
523 | case scm_tc16_big: | |
524 | scm_bigprint (exp, port, pstate); | |
525 | break; | |
526 | case scm_tc16_real: | |
527 | scm_print_real (exp, port, pstate); | |
528 | break; | |
529 | case scm_tc16_complex: | |
530 | scm_print_complex (exp, port, pstate); | |
531 | break; | |
f92e85f7 MV |
532 | case scm_tc16_fraction: |
533 | scm_i_print_fraction (exp, port, pstate); | |
534 | break; | |
534c55a9 DH |
535 | } |
536 | break; | |
0f2d19dd | 537 | case scm_tc7_string: |
c62fbfe1 | 538 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 539 | { |
1be6b49c | 540 | size_t i; |
5ca6dc39 | 541 | |
b7f3516f | 542 | scm_putc ('"', port); |
d1ca2c64 | 543 | for (i = 0; i < SCM_STRING_LENGTH (exp); ++i) |
34f0f2b8 | 544 | switch (SCM_STRING_CHARS (exp)[i]) |
0f2d19dd | 545 | { |
dbef8851 | 546 | case '"': |
0f2d19dd | 547 | case '\\': |
b7f3516f | 548 | scm_putc ('\\', port); |
0f2d19dd | 549 | default: |
34f0f2b8 | 550 | scm_putc (SCM_STRING_CHARS (exp)[i], port); |
0f2d19dd | 551 | } |
b7f3516f | 552 | scm_putc ('"', port); |
0f2d19dd JB |
553 | break; |
554 | } | |
555 | else | |
34f0f2b8 | 556 | scm_lfwrite (SCM_STRING_CHARS (exp), SCM_STRING_LENGTH (exp), port); |
0f2d19dd | 557 | break; |
28b06554 | 558 | case scm_tc7_symbol: |
9ff28a13 MV |
559 | if (SCM_SYMBOL_INTERNED_P (exp)) |
560 | { | |
561 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), | |
562 | SCM_SYMBOL_LENGTH (exp), | |
563 | port); | |
564 | scm_remember_upto_here_1 (exp); | |
565 | } | |
566 | else | |
567 | { | |
568 | scm_puts ("#<uninterned-symbol ", port); | |
569 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), | |
570 | SCM_SYMBOL_LENGTH (exp), | |
571 | port); | |
572 | scm_putc (' ', port); | |
573 | scm_intprint ((long)exp, 16, port); | |
574 | scm_putc ('>', port); | |
575 | } | |
6662998f | 576 | break; |
e5aca4b5 MV |
577 | case scm_tc7_variable: |
578 | scm_i_variable_print (exp, port, pstate); | |
579 | break; | |
0f2d19dd | 580 | case scm_tc7_wvect: |
c62fbfe1 | 581 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 582 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 583 | scm_puts ("#wh(", port); |
0f2d19dd | 584 | else |
b7f3516f | 585 | scm_puts ("#w(", port); |
0f2d19dd JB |
586 | goto common_vector_printer; |
587 | ||
588 | case scm_tc7_vector: | |
c62fbfe1 | 589 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 590 | scm_puts ("#(", port); |
0f2d19dd | 591 | common_vector_printer: |
9fbaf27c | 592 | { |
c014a02e ML |
593 | register long i; |
594 | long last = SCM_VECTOR_LENGTH (exp) - 1; | |
9fbaf27c | 595 | int cutp = 0; |
b17004b8 | 596 | if (pstate->fancyp && SCM_VECTOR_LENGTH (exp) > pstate->length) |
9fbaf27c MD |
597 | { |
598 | last = pstate->length - 1; | |
599 | cutp = 1; | |
600 | } | |
601 | for (i = 0; i < last; ++i) | |
602 | { | |
603 | /* CHECK_INTS; */ | |
604 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 605 | scm_putc (' ', port); |
9fbaf27c MD |
606 | } |
607 | if (i == last) | |
608 | { | |
609 | /* CHECK_INTS; */ | |
610 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
611 | } | |
612 | if (cutp) | |
b7f3516f TT |
613 | scm_puts (" ...", port); |
614 | scm_putc (')', port); | |
9fbaf27c | 615 | } |
c62fbfe1 | 616 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 617 | break; |
5f4df973 | 618 | #if SCM_HAVE_ARRAYS |
0f2d19dd JB |
619 | case scm_tc7_bvect: |
620 | case scm_tc7_byvect: | |
621 | case scm_tc7_svect: | |
622 | case scm_tc7_ivect: | |
623 | case scm_tc7_uvect: | |
624 | case scm_tc7_fvect: | |
625 | case scm_tc7_dvect: | |
626 | case scm_tc7_cvect: | |
ffbda747 | 627 | #if SCM_SIZEOF_LONG_LONG != 0 |
0f2d19dd JB |
628 | case scm_tc7_llvect: |
629 | #endif | |
c62fbfe1 | 630 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 631 | break; |
afe5177e | 632 | #endif |
0f2d19dd | 633 | case scm_tcs_subrs: |
f76af603 | 634 | scm_puts (SCM_SUBR_GENERIC (exp) |
9de33deb MD |
635 | ? "#<primitive-generic " |
636 | : "#<primitive-procedure ", | |
637 | port); | |
a002f1a2 | 638 | scm_puts (SCM_SYMBOL_CHARS (SCM_SNAME (exp)), port); |
b7f3516f | 639 | scm_putc ('>', port); |
0f2d19dd JB |
640 | break; |
641 | #ifdef CCLO | |
642 | case scm_tc7_cclo: | |
56977059 MD |
643 | { |
644 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 645 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
646 | { |
647 | /* Print gsubrs as primitives */ | |
c180dfd3 | 648 | SCM name = scm_procedure_name (exp); |
56977059 | 649 | scm_puts ("#<primitive-procedure", port); |
d5cf5324 | 650 | if (!SCM_FALSEP (name)) |
56977059 MD |
651 | { |
652 | scm_putc (' ', port); | |
a002f1a2 | 653 | scm_puts (SCM_SYMBOL_CHARS (name), port); |
56977059 MD |
654 | } |
655 | } | |
656 | else | |
657 | { | |
658 | scm_puts ("#<compiled-closure ", port); | |
659 | scm_iprin1 (proc, port, pstate); | |
660 | } | |
661 | scm_putc ('>', port); | |
662 | } | |
0f2d19dd JB |
663 | break; |
664 | #endif | |
c180dfd3 MD |
665 | case scm_tc7_pws: |
666 | scm_puts ("#<procedure-with-setter", port); | |
667 | { | |
668 | SCM name = scm_procedure_name (exp); | |
d5cf5324 | 669 | if (!SCM_FALSEP (name)) |
c180dfd3 MD |
670 | { |
671 | scm_putc (' ', port); | |
b24b5e13 | 672 | scm_display (name, port); |
c180dfd3 MD |
673 | } |
674 | } | |
675 | scm_putc ('>', port); | |
676 | break; | |
0f2d19dd | 677 | case scm_tc7_port: |
5ca6dc39 JB |
678 | { |
679 | register long i = SCM_PTOBNUM (exp); | |
680 | if (i < scm_numptob | |
681 | && scm_ptobs[i].print | |
682 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 683 | break; |
5ca6dc39 JB |
684 | goto punk; |
685 | } | |
686 | case scm_tc7_smob: | |
7a7f7c53 DH |
687 | ENTER_NESTED_DATA (pstate, exp, circref); |
688 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
689 | EXIT_NESTED_DATA (pstate); | |
690 | break; | |
0f2d19dd | 691 | default: |
a51ea417 MD |
692 | punk: |
693 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
694 | } |
695 | } | |
696 | } | |
697 | ||
c62fbfe1 MD |
698 | /* Print states are necessary for circular reference safe printing. |
699 | * They are also expensive to allocate. Therefore print states are | |
700 | * kept in a pool so that they can be reused. | |
701 | */ | |
1cc91f1b | 702 | |
bb35f315 MV |
703 | /* The PORT argument can also be a print-state/port pair, which will |
704 | * then be used instead of allocating a new print state. This is | |
705 | * useful for continuing a chain of print calls from Scheme. */ | |
706 | ||
a51ea417 | 707 | void |
1bbd0b84 | 708 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 709 | { |
c4f37e80 MV |
710 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
711 | SCM pstate_scm; | |
c62fbfe1 | 712 | scm_print_state *pstate; |
15635be5 | 713 | int old_writingp; |
c62fbfe1 | 714 | |
bb35f315 MV |
715 | /* If PORT is a print-state/port pair, use that. Else create a new |
716 | print-state. */ | |
c4f37e80 | 717 | |
0c95b57d | 718 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 719 | { |
52235e71 MD |
720 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
721 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
722 | } |
723 | else | |
c62fbfe1 | 724 | { |
c4f37e80 | 725 | /* First try to allocate a print state from the pool */ |
dfd03fb9 | 726 | scm_i_plugin_mutex_lock (&print_state_mutex); |
d5cf5324 | 727 | if (!SCM_NULLP (print_state_pool)) |
c4f37e80 | 728 | { |
d5cf5324 DH |
729 | handle = print_state_pool; |
730 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 731 | } |
dfd03fb9 | 732 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
54778cd3 | 733 | if (SCM_FALSEP (handle)) |
d5cf5324 | 734 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 735 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 736 | } |
c62fbfe1 | 737 | |
c4f37e80 | 738 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 739 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
740 | pstate->writingp = writingp; |
741 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 742 | pstate->writingp = old_writingp; |
c62fbfe1 | 743 | |
bb35f315 MV |
744 | /* Return print state to pool if it has been created above and |
745 | hasn't escaped to Scheme. */ | |
746 | ||
54778cd3 | 747 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 | 748 | { |
dfd03fb9 | 749 | scm_i_plugin_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
750 | SCM_SETCDR (handle, print_state_pool); |
751 | print_state_pool = handle; | |
dfd03fb9 | 752 | scm_i_plugin_mutex_unlock (&print_state_mutex); |
c4f37e80 | 753 | } |
a51ea417 MD |
754 | } |
755 | ||
0f2d19dd JB |
756 | |
757 | /* Print an integer. | |
758 | */ | |
1cc91f1b | 759 | |
0f2d19dd | 760 | void |
1bbd0b84 | 761 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
762 | { |
763 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 764 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
765 | } |
766 | ||
767 | /* Print an object of unrecognized type. | |
768 | */ | |
1cc91f1b | 769 | |
0f2d19dd | 770 | void |
1bbd0b84 | 771 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 772 | { |
b7f3516f TT |
773 | scm_puts ("#<unknown-", port); |
774 | scm_puts (hdr, port); | |
c8a1bdc4 | 775 | if (scm_in_heap_p (ptr)) |
0f2d19dd | 776 | { |
b7f3516f | 777 | scm_puts (" (0x", port); |
54778cd3 | 778 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 779 | scm_puts (" . 0x", port); |
54778cd3 | 780 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 781 | scm_puts (") @", port); |
0f2d19dd | 782 | } |
b7f3516f | 783 | scm_puts (" 0x", port); |
54778cd3 | 784 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 785 | scm_putc ('>', port); |
0f2d19dd JB |
786 | } |
787 | ||
1cc91f1b | 788 | |
904a077d | 789 | /* Print a list. |
22a52da1 | 790 | */ |
0f2d19dd | 791 | void |
34d19ef6 | 792 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 793 | { |
c62fbfe1 | 794 | register SCM hare, tortoise; |
c014a02e | 795 | long 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; | |
904a077d | 805 | while (SCM_CONSP (hare)) |
c62fbfe1 | 806 | { |
54778cd3 | 807 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
808 | goto fancy_printing; |
809 | hare = SCM_CDR (hare); | |
d5cf5324 | 810 | if (!SCM_CONSP (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); | |
904a077d | 818 | for (exp = SCM_CDR (exp); SCM_CONSP (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 819 | { |
c014a02e | 820 | register long i; |
5ca6dc39 | 821 | |
c62fbfe1 | 822 | for (i = floor; i >= 0; --i) |
230d095f | 823 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
824 | goto circref; |
825 | PUSH_REF (pstate, exp); | |
b7f3516f | 826 | scm_putc (' ', port); |
0f2d19dd | 827 | /* CHECK_INTS; */ |
c62fbfe1 | 828 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 829 | } |
c96d76b8 | 830 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 831 | { |
b7f3516f | 832 | scm_puts (" . ", port); |
c62fbfe1 | 833 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 834 | } |
c62fbfe1 | 835 | |
a51ea417 | 836 | end: |
b7f3516f | 837 | scm_putc (tlr, port); |
c62fbfe1 | 838 | pstate->top = floor + 2; |
a51ea417 | 839 | return; |
c62fbfe1 MD |
840 | |
841 | fancy_printing: | |
842 | { | |
c014a02e | 843 | long n = pstate->length; |
c62fbfe1 MD |
844 | |
845 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
846 | exp = SCM_CDR (exp); --n; | |
904a077d | 847 | for (; SCM_CONSP (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 848 | { |
c014a02e | 849 | register unsigned long i; |
5ca6dc39 | 850 | |
c62fbfe1 | 851 | for (i = 0; i < pstate->top; ++i) |
230d095f | 852 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
853 | goto fancy_circref; |
854 | if (pstate->fancyp) | |
855 | { | |
856 | if (n == 0) | |
857 | { | |
b7f3516f | 858 | scm_puts (" ...", port); |
c62fbfe1 MD |
859 | goto skip_tail; |
860 | } | |
861 | else | |
862 | --n; | |
863 | } | |
864 | PUSH_REF(pstate, exp); | |
865 | ++pstate->list_offset; | |
b7f3516f | 866 | scm_putc (' ', port); |
c62fbfe1 MD |
867 | /* CHECK_INTS; */ |
868 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
869 | } | |
870 | } | |
c96d76b8 | 871 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 872 | { |
b7f3516f | 873 | scm_puts (" . ", port); |
c62fbfe1 MD |
874 | scm_iprin1 (exp, port, pstate); |
875 | } | |
876 | skip_tail: | |
877 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 878 | goto end; |
a51ea417 | 879 | |
c62fbfe1 MD |
880 | fancy_circref: |
881 | pstate->list_offset -= pstate->top - floor - 2; | |
882 | ||
883 | circref: | |
b7f3516f | 884 | scm_puts (" . ", port); |
c62fbfe1 MD |
885 | print_circref (port, pstate, exp); |
886 | goto end; | |
0f2d19dd JB |
887 | } |
888 | ||
889 | \f | |
890 | ||
bb35f315 MV |
891 | int |
892 | scm_valid_oport_value_p (SCM val) | |
893 | { | |
368cf54d GB |
894 | return (SCM_OPOUTPORTP (val) |
895 | || (SCM_PORT_WITH_PS_P (val) | |
896 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
897 | } |
898 | ||
8b840115 | 899 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 900 | |
0f2d19dd | 901 | SCM |
1bbd0b84 | 902 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
903 | { |
904 | if (SCM_UNBNDP (port)) | |
905 | port = scm_cur_outp; | |
3eb7e6ee JB |
906 | |
907 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 908 | |
a51ea417 | 909 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
910 | #ifdef HAVE_PIPE |
911 | # ifdef EPIPE | |
912 | if (EPIPE == errno) | |
913 | scm_close_port (port); | |
914 | # endif | |
915 | #endif | |
916 | return SCM_UNSPECIFIED; | |
917 | } | |
918 | ||
919 | ||
8b840115 | 920 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 921 | |
0f2d19dd | 922 | SCM |
1bbd0b84 | 923 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
924 | { |
925 | if (SCM_UNBNDP (port)) | |
926 | port = scm_cur_outp; | |
3eb7e6ee JB |
927 | |
928 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 929 | |
a51ea417 | 930 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
931 | #ifdef HAVE_PIPE |
932 | # ifdef EPIPE | |
933 | if (EPIPE == errno) | |
934 | scm_close_port (port); | |
935 | # endif | |
936 | #endif | |
937 | return SCM_UNSPECIFIED; | |
938 | } | |
939 | ||
70d63753 GB |
940 | |
941 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
942 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
943 | "Write @var{message} to @var{destination}, defaulting to\n" |
944 | "the current output port.\n" | |
945 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
946 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
947 | "the escapes are replaced with corresponding members of\n" | |
948 | "@var{ARGS}:\n" | |
949 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
950 | "using @code{write}.\n" | |
951 | "If @var{destination} is @code{#t}, then use the current output\n" | |
952 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
953 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
954 | #define FUNC_NAME s_scm_simple_format |
955 | { | |
dfd03fb9 | 956 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
957 | int fReturnString = 0; |
958 | int writingp; | |
959 | char *start; | |
b24b5e13 | 960 | char *end; |
70d63753 GB |
961 | char *p; |
962 | ||
daba1a71 MD |
963 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
964 | { | |
dfd03fb9 | 965 | destination = port = scm_cur_outp; |
daba1a71 MD |
966 | } |
967 | else if (SCM_FALSEP (destination)) | |
968 | { | |
969 | fReturnString = 1; | |
dfd03fb9 MD |
970 | port = scm_mkstrport (SCM_INUM0, |
971 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
972 | SCM_OPN | SCM_WRTNG, | |
973 | FUNC_NAME); | |
974 | destination = port; | |
daba1a71 MD |
975 | } |
976 | else | |
977 | { | |
978 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 979 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
980 | } |
981 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 982 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 983 | |
34f0f2b8 | 984 | start = SCM_STRING_CHARS (message); |
b24b5e13 DH |
985 | end = start + SCM_STRING_LENGTH (message); |
986 | for (p = start; p != end; ++p) | |
70d63753 GB |
987 | if (*p == '~') |
988 | { | |
b24b5e13 | 989 | if (++p == end) |
6662998f MV |
990 | break; |
991 | ||
992 | switch (*p) | |
993 | { | |
994 | case 'A': case 'a': | |
995 | writingp = 0; | |
996 | break; | |
997 | case 'S': case 's': | |
998 | writingp = 1; | |
999 | break; | |
1000 | case '~': | |
dfd03fb9 | 1001 | scm_lfwrite (start, p - start, port); |
6662998f MV |
1002 | start = p + 1; |
1003 | continue; | |
1004 | case '%': | |
dfd03fb9 MD |
1005 | scm_lfwrite (start, p - start - 1, port); |
1006 | scm_newline (port); | |
6662998f MV |
1007 | start = p + 1; |
1008 | continue; | |
1009 | default: | |
1afff620 KN |
1010 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
1011 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f MV |
1012 | |
1013 | } | |
70d63753 | 1014 | |
6662998f MV |
1015 | |
1016 | if (!SCM_CONSP (args)) | |
1afff620 KN |
1017 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
1018 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f | 1019 | |
dfd03fb9 MD |
1020 | scm_lfwrite (start, p - start - 1, port); |
1021 | /* we pass destination here */ | |
70d63753 GB |
1022 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1023 | args = SCM_CDR (args); | |
1024 | start = p + 1; | |
1025 | } | |
6662998f | 1026 | |
dfd03fb9 | 1027 | scm_lfwrite (start, p - start, port); |
d5cf5324 | 1028 | if (!SCM_EQ_P (args, SCM_EOL)) |
1afff620 KN |
1029 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1030 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1031 | |
1032 | if (fReturnString) | |
1033 | answer = scm_strport_to_string (destination); | |
1034 | ||
daba1a71 | 1035 | return scm_return_first (answer, message); |
70d63753 GB |
1036 | } |
1037 | #undef FUNC_NAME | |
1038 | ||
1039 | ||
3b3b36dd | 1040 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1041 | (SCM port), |
8f85c0c6 NJ |
1042 | "Send a newline to @var{port}.\n" |
1043 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1044 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1045 | { |
1046 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1047 | port = scm_cur_outp; |
3eb7e6ee | 1048 | |
34d19ef6 | 1049 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1050 | |
0ef4ae82 | 1051 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1052 | return SCM_UNSPECIFIED; |
1053 | } | |
1bbd0b84 | 1054 | #undef FUNC_NAME |
0f2d19dd | 1055 | |
3b3b36dd | 1056 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1057 | (SCM chr, SCM port), |
eca65e90 | 1058 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1059 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1060 | { |
1061 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1062 | port = scm_cur_outp; |
3eb7e6ee | 1063 | |
34d19ef6 HWN |
1064 | SCM_VALIDATE_CHAR (1, chr); |
1065 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
bb35f315 | 1066 | |
7866a09b | 1067 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1068 | #ifdef HAVE_PIPE |
1069 | # ifdef EPIPE | |
1070 | if (EPIPE == errno) | |
1071 | scm_close_port (port); | |
1072 | # endif | |
1073 | #endif | |
1074 | return SCM_UNSPECIFIED; | |
1075 | } | |
1bbd0b84 | 1076 | #undef FUNC_NAME |
0f2d19dd | 1077 | |
0f2d19dd JB |
1078 | \f |
1079 | ||
bb35f315 | 1080 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1081 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1082 | * containing PORT and PSTATE. This object can be used as the port for | |
1083 | * display/write etc to continue the current print chain. The REVEALED | |
1084 | * field of PSTATE is set to true to indicate that the print state has | |
1085 | * escaped to Scheme and thus has to be freed by the GC. | |
1086 | */ | |
1087 | ||
92c2555f | 1088 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1089 | |
1090 | /* Print exactly as the port itself would */ | |
1091 | ||
1092 | static int | |
e841c3e0 | 1093 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1094 | { |
1095 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1096 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1097 | } | |
c4f37e80 MV |
1098 | |
1099 | SCM | |
1bbd0b84 | 1100 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1101 | { |
bb35f315 | 1102 | pstate->revealed = 1; |
dfd03fb9 MD |
1103 | return scm_call_2 (proc, exp, |
1104 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1105 | } |
1106 | ||
dfd03fb9 | 1107 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1108 | (SCM port, SCM pstate), |
71331188 | 1109 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1110 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1111 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1112 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1113 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1114 | { |
34d19ef6 | 1115 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1116 | if (!SCM_UNBNDP (pstate)) |
1117 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1118 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1119 | } |
1bbd0b84 | 1120 | #undef FUNC_NAME |
c19bc088 | 1121 | |
a1ec6916 | 1122 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1123 | (SCM port), |
71331188 MG |
1124 | "Return the print state of the port @var{port}. If @var{port}\n" |
1125 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1126 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1127 | { |
368cf54d GB |
1128 | if (SCM_PORT_WITH_PS_P (port)) |
1129 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1130 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1131 | return SCM_BOOL_F; |
276dd677 | 1132 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1133 | } |
1bbd0b84 | 1134 | #undef FUNC_NAME |
bb35f315 | 1135 | |
c4f37e80 | 1136 | \f |
1cc91f1b | 1137 | |
0f2d19dd JB |
1138 | void |
1139 | scm_init_print () | |
0f2d19dd | 1140 | { |
c19bc088 | 1141 | SCM vtable, layout, type; |
d5cf5324 | 1142 | |
b7ff98dd | 1143 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
d5cf5324 DH |
1144 | |
1145 | scm_gc_register_root (&print_state_pool); | |
1146 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1147 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
4bfdf158 | 1148 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
1afff620 | 1149 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
38ae064c | 1150 | scm_set_struct_vtable_name_x (type, scm_str2symbol ("print-state")); |
bb35f315 | 1151 | scm_print_state_vtable = type; |
c4f37e80 | 1152 | |
c19bc088 MD |
1153 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1154 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1155 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1156 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
c19bc088 | 1157 | |
a0599745 | 1158 | #include "libguile/print.x" |
0f2d19dd | 1159 | } |
89e00824 ML |
1160 | |
1161 | /* | |
1162 | Local Variables: | |
1163 | c-file-style: "gnu" | |
1164 | End: | |
1165 | */ |