Commit | Line | Data |
---|---|---|
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 | ||
52 | char *scm_isymnames[] = | |
53 | { | |
c96d76b8 | 54 | /* This table must agree with the list of SCM_IM_ constants in tags.h */ |
0f2d19dd JB |
55 | "#@and", |
56 | "#@begin", | |
57 | "#@case", | |
58 | "#@cond", | |
59 | "#@do", | |
60 | "#@if", | |
61 | "#@lambda", | |
62 | "#@let", | |
63 | "#@let*", | |
64 | "#@letrec", | |
65 | "#@or", | |
66 | "#@quote", | |
67 | "#@set!", | |
68 | "#@define", | |
69 | #if 0 | |
70 | "#@literal-variable-ref", | |
71 | "#@literal-variable-set!", | |
72 | #endif | |
73 | "#@apply", | |
74 | "#@call-with-current-continuation", | |
75 | ||
76 | /* user visible ISYMS */ | |
77 | /* other keywords */ | |
78 | /* Flags */ | |
79 | ||
80 | "#f", | |
81 | "#t", | |
82 | "#<undefined>", | |
83 | "#<eof>", | |
84 | "()", | |
4df91bd6 MD |
85 | "#<unspecified>", |
86 | "#@dispatch", | |
43c667e9 MD |
87 | "#@slot-ref", |
88 | "#@slot-set!", | |
159500fb | 89 | |
159500fb MD |
90 | /* Multi-language support */ |
91 | ||
92 | "#@nil-cond", | |
ccd0e478 MD |
93 | "#@bind", |
94 | ||
5623a9b4 | 95 | "#@delay", |
28d52ebb | 96 | "#@future", |
24d1fde8 MV |
97 | "#@call-with-values", |
98 | ||
c96d76b8 NJ |
99 | "#<unbound>", |
100 | ||
101 | /* Elisp nil value. This is its Scheme name; whenever it's printed | |
102 | in Elisp, it should appear as the symbol `nil'. */ | |
103 | ||
104 | "#nil" | |
0f2d19dd JB |
105 | }; |
106 | ||
92c2555f | 107 | scm_t_option scm_print_opts[] = { |
726d810a DH |
108 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
109 | "Hook for printing closures (should handle macros as well)." }, | |
84f6a34a MD |
110 | { SCM_OPTION_BOOLEAN, "source", 0, |
111 | "Print closures with source." } | |
e6e4c9af MD |
112 | }; |
113 | ||
a1ec6916 | 114 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 115 | (SCM setting), |
71331188 | 116 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
117 | "this procedure directly, use the procedures\n" |
118 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
119 | "and @code{print-options}.") | |
1bbd0b84 | 120 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 121 | { |
a51ea417 | 122 | SCM ans = scm_options (setting, |
b7ff98dd MD |
123 | scm_print_opts, |
124 | SCM_N_PRINT_OPTIONS, | |
1bbd0b84 | 125 | FUNC_NAME); |
e6e4c9af MD |
126 | return ans; |
127 | } | |
1bbd0b84 | 128 | #undef FUNC_NAME |
e6e4c9af | 129 | |
0f2d19dd JB |
130 | \f |
131 | /* {Printing of Scheme Objects} | |
132 | */ | |
133 | ||
a51ea417 | 134 | /* Detection of circular references. |
c62fbfe1 MD |
135 | * |
136 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
137 | * time complexity (O (depth * N)), The printer code can be |
138 | * rewritten to be O(N). | |
a51ea417 | 139 | */ |
c62fbfe1 | 140 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 141 | do { \ |
c62fbfe1 MD |
142 | pstate->ref_stack[pstate->top++] = (obj); \ |
143 | if (pstate->top == pstate->ceiling) \ | |
144 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 145 | } while(0) |
a51ea417 | 146 | |
c62fbfe1 | 147 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 148 | do { \ |
5ca6dc39 | 149 | register unsigned long i; \ |
c62fbfe1 | 150 | for (i = 0; i < pstate->top; ++i) \ |
230d095f | 151 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
c62fbfe1 MD |
152 | goto label; \ |
153 | if (pstate->fancyp) \ | |
154 | { \ | |
155 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
156 | { \ | |
b7f3516f | 157 | scm_putc ('#', port); \ |
c62fbfe1 MD |
158 | return; \ |
159 | } \ | |
160 | } \ | |
161 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 162 | } while(0) |
a51ea417 | 163 | |
c62fbfe1 MD |
164 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
165 | ||
d5cf5324 DH |
166 | SCM scm_print_state_vtable = SCM_BOOL_F; |
167 | static SCM print_state_pool = SCM_EOL; | |
c4f37e80 | 168 | |
f843a84c | 169 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 170 | |
3b3b36dd | 171 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 172 | (), |
d5cf5324 | 173 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
174 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
175 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 176 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 177 | { |
d5cf5324 DH |
178 | if (!SCM_NULLP (print_state_pool)) |
179 | return SCM_CAR (print_state_pool); | |
a0adfbf0 | 180 | else |
0a284a4e | 181 | return SCM_BOOL_F; |
c62fbfe1 | 182 | } |
1bbd0b84 GB |
183 | #undef FUNC_NAME |
184 | ||
c62fbfe1 MD |
185 | #endif |
186 | ||
187 | #define PSTATE_SIZE 50L | |
188 | ||
698c0295 | 189 | static SCM |
1bbd0b84 | 190 | make_print_state (void) |
698c0295 | 191 | { |
d5cf5324 DH |
192 | SCM print_state |
193 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 194 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 195 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
34d19ef6 | 196 | pstate->ref_stack = SCM_WRITABLE_VELTS (pstate->ref_vect); |
b17004b8 | 197 | pstate->ceiling = SCM_VECTOR_LENGTH (pstate->ref_vect); |
698c0295 MD |
198 | return print_state; |
199 | } | |
1cc91f1b | 200 | |
c62fbfe1 MD |
201 | SCM |
202 | scm_make_print_state () | |
c62fbfe1 | 203 | { |
230d095f | 204 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
205 | |
206 | /* First try to allocate a print state from the pool */ | |
207 | SCM_DEFER_INTS; | |
d5cf5324 | 208 | if (!SCM_NULLP (print_state_pool)) |
698c0295 | 209 | { |
d5cf5324 DH |
210 | answer = SCM_CAR (print_state_pool); |
211 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 MD |
212 | } |
213 | SCM_ALLOW_INTS; | |
214 | ||
230d095f | 215 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
c62fbfe1 | 216 | } |
a51ea417 | 217 | |
698c0295 | 218 | void |
6e8d25a6 | 219 | scm_free_print_state (SCM print_state) |
698c0295 MD |
220 | { |
221 | SCM handle; | |
222 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
223 | /* Cleanup before returning print state to pool. | |
224 | * It is better to do it here. Doing it in scm_prin1 | |
225 | * would cost more since that function is called much more | |
226 | * often. | |
227 | */ | |
228 | pstate->fancyp = 0; | |
bb35f315 | 229 | pstate->revealed = 0; |
698c0295 | 230 | SCM_DEFER_INTS; |
16d4699b | 231 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 232 | print_state_pool = handle; |
698c0295 MD |
233 | SCM_ALLOW_INTS; |
234 | } | |
1cc91f1b | 235 | |
a51ea417 | 236 | static void |
1bbd0b84 | 237 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 238 | { |
b17004b8 | 239 | unsigned long int old_size = SCM_VECTOR_LENGTH (pstate->ref_vect); |
34d19ef6 | 240 | SCM const *old_elts = SCM_VELTS (pstate->ref_vect); |
b17004b8 | 241 | unsigned long int new_size = 2 * pstate->ceiling; |
00ffa0e7 | 242 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
243 | unsigned long int i; |
244 | ||
245 | for (i = 0; i != old_size; ++i) | |
34d19ef6 | 246 | SCM_VECTOR_SET (new_vect, i, old_elts [i]); |
b17004b8 DH |
247 | |
248 | pstate->ref_vect = new_vect; | |
34d19ef6 | 249 | pstate->ref_stack = SCM_WRITABLE_VELTS(new_vect); |
bf685b6d | 250 | pstate->ceiling = new_size; |
a51ea417 MD |
251 | } |
252 | ||
1cc91f1b | 253 | |
a51ea417 | 254 | static void |
34d19ef6 | 255 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 256 | { |
c014a02e ML |
257 | register long i; |
258 | long self = pstate->top - 1; | |
c62fbfe1 MD |
259 | i = pstate->top - 1; |
260 | if (SCM_CONSP (pstate->ref_stack[i])) | |
261 | { | |
262 | while (i > 0) | |
263 | { | |
d5cf5324 | 264 | if (!SCM_CONSP (pstate->ref_stack[i - 1]) |
230d095f DH |
265 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
266 | pstate->ref_stack[i])) | |
c62fbfe1 MD |
267 | break; |
268 | --i; | |
269 | } | |
270 | self = i; | |
271 | } | |
272 | for (i = pstate->top - 1; 1; --i) | |
230d095f | 273 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
c62fbfe1 | 274 | break; |
b7f3516f | 275 | scm_putc ('#', port); |
c62fbfe1 | 276 | scm_intprint (i - self, 10, port); |
b7f3516f | 277 | scm_putc ('#', port); |
a51ea417 MD |
278 | } |
279 | ||
6662998f MV |
280 | /* Print the name of a symbol. */ |
281 | ||
282 | void | |
283 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
284 | { | |
285 | size_t pos; | |
286 | size_t end; | |
287 | int weird; | |
288 | int maybe_weird; | |
289 | size_t mw_pos = 0; | |
290 | ||
291 | pos = 0; | |
292 | weird = 0; | |
293 | maybe_weird = 0; | |
294 | ||
295 | /* XXX - Lots of weird symbol names are missed, such as "12" or | |
296 | "'a". */ | |
297 | ||
298 | if (len == 0) | |
299 | scm_lfwrite ("#{}#", 4, port); | |
300 | else if (str[0] == '#' || str[0] == ':' || str[len-1] == ':') | |
301 | { | |
302 | scm_lfwrite ("#{", 2, port); | |
303 | weird = 1; | |
304 | } | |
305 | ||
306 | for (end = pos; end < len; ++end) | |
307 | switch (str[end]) | |
308 | { | |
309 | #ifdef BRACKETS_AS_PARENS | |
310 | case '[': | |
311 | case ']': | |
312 | #endif | |
313 | case '(': | |
314 | case ')': | |
315 | case '"': | |
316 | case ';': | |
317 | case SCM_WHITE_SPACES: | |
318 | case SCM_LINE_INCREMENTORS: | |
319 | weird_handler: | |
320 | if (maybe_weird) | |
321 | { | |
322 | end = mw_pos; | |
323 | maybe_weird = 0; | |
324 | } | |
325 | if (!weird) | |
326 | { | |
327 | scm_lfwrite ("#{", 2, port); | |
328 | weird = 1; | |
329 | } | |
330 | if (pos < end) | |
331 | { | |
332 | scm_lfwrite (str + pos, end - pos, port); | |
333 | } | |
334 | { | |
335 | char buf[2]; | |
336 | buf[0] = '\\'; | |
337 | buf[1] = str[end]; | |
338 | scm_lfwrite (buf, 2, port); | |
339 | } | |
340 | pos = end + 1; | |
341 | break; | |
342 | case '\\': | |
343 | if (weird) | |
344 | goto weird_handler; | |
345 | if (!maybe_weird) | |
346 | { | |
347 | maybe_weird = 1; | |
348 | mw_pos = pos; | |
349 | } | |
350 | break; | |
351 | case '}': | |
352 | case '#': | |
353 | if (weird) | |
354 | goto weird_handler; | |
355 | break; | |
356 | default: | |
357 | break; | |
358 | } | |
359 | if (pos < end) | |
360 | scm_lfwrite (str + pos, end - pos, port); | |
361 | if (weird) | |
362 | scm_lfwrite ("}#", 2, port); | |
363 | } | |
364 | ||
c62fbfe1 | 365 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 366 | */ |
8b840115 MD |
367 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
368 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 369 | |
0f2d19dd | 370 | void |
1bbd0b84 | 371 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 372 | { |
54778cd3 | 373 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 374 | { |
e34f941a DH |
375 | case scm_tc3_closure: |
376 | case scm_tc3_tc7_1: | |
377 | case scm_tc3_tc7_2: | |
378 | /* These tc3 tags should never occur in an immediate value. They are | |
379 | * only used in cell types of non-immediates, i. e. the value returned | |
380 | * by SCM_CELL_TYPE (exp) can use these tags. | |
381 | */ | |
382 | scm_ipruk ("immediate", exp, port); | |
383 | break; | |
384 | case scm_tc3_int_1: | |
385 | case scm_tc3_int_2: | |
0f2d19dd JB |
386 | scm_intprint (SCM_INUM (exp), 10, port); |
387 | break; | |
e34f941a | 388 | case scm_tc3_imm24: |
7866a09b | 389 | if (SCM_CHARP (exp)) |
0f2d19dd | 390 | { |
e34f941a | 391 | long i = SCM_CHAR (exp); |
5ca6dc39 | 392 | |
b7f3516f TT |
393 | if (SCM_WRITINGP (pstate)) |
394 | { | |
395 | scm_puts ("#\\", port); | |
396 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
397 | scm_puts (scm_charnames[i], port); | |
57b74422 GH |
398 | #ifndef EBCDIC |
399 | else if (i == '\177') | |
400 | scm_puts (scm_charnames[scm_n_charnames - 1], port); | |
401 | #endif | |
b7f3516f TT |
402 | else if (i < 0 || i > '\177') |
403 | scm_intprint (i, 8, port); | |
404 | else | |
405 | scm_putc (i, port); | |
406 | } | |
407 | else | |
408 | scm_putc (i, port); | |
0f2d19dd | 409 | } |
a51ea417 | 410 | else if (SCM_IFLAGP (exp) |
5ca6dc39 | 411 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
b7f3516f | 412 | scm_puts (SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
413 | else if (SCM_ILOCP (exp)) |
414 | { | |
b7f3516f | 415 | scm_puts ("#@", port); |
1be6b49c | 416 | scm_intprint ((long) SCM_IFRAME (exp), 10, port); |
b7f3516f | 417 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
1be6b49c | 418 | scm_intprint ((long) SCM_IDIST (exp), 10, port); |
0f2d19dd JB |
419 | } |
420 | else | |
e34f941a DH |
421 | { |
422 | /* unknown immediate value */ | |
423 | scm_ipruk ("immediate", exp, port); | |
424 | } | |
0f2d19dd | 425 | break; |
e34f941a | 426 | case scm_tc3_cons: |
0f2d19dd JB |
427 | switch (SCM_TYP7 (exp)) |
428 | { | |
904a077d MV |
429 | case scm_tcs_struct: |
430 | { | |
431 | ENTER_NESTED_DATA (pstate, exp, circref); | |
432 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
433 | { | |
434 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
435 | if (!print) | |
436 | goto print_struct; | |
437 | SCM_NEWSMOB (pwps, | |
438 | scm_tc16_port_with_ps, | |
439 | SCM_UNPACK (scm_cons (port, pstate->handle))); | |
7663c008 | 440 | pstate->revealed = 1; |
904a077d MV |
441 | scm_call_generic_2 (print, exp, pwps); |
442 | } | |
443 | else | |
444 | { | |
445 | print_struct: | |
446 | scm_print_struct (exp, port, pstate); | |
447 | } | |
448 | EXIT_NESTED_DATA (pstate); | |
449 | } | |
450 | break; | |
0f2d19dd JB |
451 | case scm_tcs_cons_imcar: |
452 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
453 | ENTER_NESTED_DATA (pstate, exp, circref); |
454 | scm_iprlist ("(", exp, ')', port, pstate); | |
455 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
456 | break; |
457 | circref: | |
c62fbfe1 | 458 | print_circref (port, pstate, exp); |
0f2d19dd JB |
459 | break; |
460 | case scm_tcs_closures: | |
bb35f315 MV |
461 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
462 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 463 | exp, port, pstate))) |
726d810a DH |
464 | { |
465 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
466 | scm_puts ("#<procedure", port); | |
467 | scm_putc (' ', port); | |
468 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
469 | scm_putc (' ', port); | |
470 | if (SCM_PRINT_SOURCE_P) | |
471 | { | |
472 | SCM env = SCM_ENV (exp); | |
473 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
474 | SCM src = scm_unmemocopy (SCM_CODE (exp), xenv); | |
475 | ENTER_NESTED_DATA (pstate, exp, circref); | |
476 | scm_iprin1 (src, port, pstate); | |
477 | EXIT_NESTED_DATA (pstate); | |
478 | } | |
479 | else | |
480 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 481 | scm_putc ('>', port); |
726d810a | 482 | } |
0f2d19dd | 483 | break; |
0f2d19dd | 484 | case scm_tc7_string: |
c62fbfe1 | 485 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 486 | { |
1be6b49c | 487 | size_t i; |
5ca6dc39 | 488 | |
b7f3516f | 489 | scm_putc ('"', port); |
d1ca2c64 | 490 | for (i = 0; i < SCM_STRING_LENGTH (exp); ++i) |
34f0f2b8 | 491 | switch (SCM_STRING_CHARS (exp)[i]) |
0f2d19dd | 492 | { |
dbef8851 | 493 | case '"': |
0f2d19dd | 494 | case '\\': |
b7f3516f | 495 | scm_putc ('\\', port); |
0f2d19dd | 496 | default: |
34f0f2b8 | 497 | scm_putc (SCM_STRING_CHARS (exp)[i], port); |
0f2d19dd | 498 | } |
b7f3516f | 499 | scm_putc ('"', port); |
0f2d19dd JB |
500 | break; |
501 | } | |
502 | else | |
34f0f2b8 | 503 | scm_lfwrite (SCM_STRING_CHARS (exp), SCM_STRING_LENGTH (exp), port); |
0f2d19dd | 504 | break; |
28b06554 | 505 | case scm_tc7_symbol: |
9ff28a13 MV |
506 | if (SCM_SYMBOL_INTERNED_P (exp)) |
507 | { | |
508 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), | |
509 | SCM_SYMBOL_LENGTH (exp), | |
510 | port); | |
511 | scm_remember_upto_here_1 (exp); | |
512 | } | |
513 | else | |
514 | { | |
515 | scm_puts ("#<uninterned-symbol ", port); | |
516 | scm_print_symbol_name (SCM_SYMBOL_CHARS (exp), | |
517 | SCM_SYMBOL_LENGTH (exp), | |
518 | port); | |
519 | scm_putc (' ', port); | |
520 | scm_intprint ((long)exp, 16, port); | |
521 | scm_putc ('>', port); | |
522 | } | |
6662998f | 523 | break; |
e5aca4b5 MV |
524 | case scm_tc7_variable: |
525 | scm_i_variable_print (exp, port, pstate); | |
526 | break; | |
0f2d19dd | 527 | case scm_tc7_wvect: |
c62fbfe1 | 528 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 529 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 530 | scm_puts ("#wh(", port); |
0f2d19dd | 531 | else |
b7f3516f | 532 | scm_puts ("#w(", port); |
0f2d19dd JB |
533 | goto common_vector_printer; |
534 | ||
535 | case scm_tc7_vector: | |
c62fbfe1 | 536 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 537 | scm_puts ("#(", port); |
0f2d19dd | 538 | common_vector_printer: |
9fbaf27c | 539 | { |
c014a02e ML |
540 | register long i; |
541 | long last = SCM_VECTOR_LENGTH (exp) - 1; | |
9fbaf27c | 542 | int cutp = 0; |
b17004b8 | 543 | if (pstate->fancyp && SCM_VECTOR_LENGTH (exp) > pstate->length) |
9fbaf27c MD |
544 | { |
545 | last = pstate->length - 1; | |
546 | cutp = 1; | |
547 | } | |
548 | for (i = 0; i < last; ++i) | |
549 | { | |
550 | /* CHECK_INTS; */ | |
551 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 552 | scm_putc (' ', port); |
9fbaf27c MD |
553 | } |
554 | if (i == last) | |
555 | { | |
556 | /* CHECK_INTS; */ | |
557 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
558 | } | |
559 | if (cutp) | |
b7f3516f TT |
560 | scm_puts (" ...", port); |
561 | scm_putc (')', port); | |
9fbaf27c | 562 | } |
c62fbfe1 | 563 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 564 | break; |
5f4df973 | 565 | #if SCM_HAVE_ARRAYS |
0f2d19dd JB |
566 | case scm_tc7_bvect: |
567 | case scm_tc7_byvect: | |
568 | case scm_tc7_svect: | |
569 | case scm_tc7_ivect: | |
570 | case scm_tc7_uvect: | |
571 | case scm_tc7_fvect: | |
572 | case scm_tc7_dvect: | |
573 | case scm_tc7_cvect: | |
ffbda747 | 574 | #if SCM_SIZEOF_LONG_LONG != 0 |
0f2d19dd JB |
575 | case scm_tc7_llvect: |
576 | #endif | |
c62fbfe1 | 577 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 578 | break; |
afe5177e | 579 | #endif |
0f2d19dd | 580 | case scm_tcs_subrs: |
f76af603 | 581 | scm_puts (SCM_SUBR_GENERIC (exp) |
9de33deb MD |
582 | ? "#<primitive-generic " |
583 | : "#<primitive-procedure ", | |
584 | port); | |
a002f1a2 | 585 | scm_puts (SCM_SYMBOL_CHARS (SCM_SNAME (exp)), port); |
b7f3516f | 586 | scm_putc ('>', port); |
0f2d19dd JB |
587 | break; |
588 | #ifdef CCLO | |
589 | case scm_tc7_cclo: | |
56977059 MD |
590 | { |
591 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 592 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
593 | { |
594 | /* Print gsubrs as primitives */ | |
c180dfd3 | 595 | SCM name = scm_procedure_name (exp); |
56977059 | 596 | scm_puts ("#<primitive-procedure", port); |
d5cf5324 | 597 | if (!SCM_FALSEP (name)) |
56977059 MD |
598 | { |
599 | scm_putc (' ', port); | |
a002f1a2 | 600 | scm_puts (SCM_SYMBOL_CHARS (name), port); |
56977059 MD |
601 | } |
602 | } | |
603 | else | |
604 | { | |
605 | scm_puts ("#<compiled-closure ", port); | |
606 | scm_iprin1 (proc, port, pstate); | |
607 | } | |
608 | scm_putc ('>', port); | |
609 | } | |
0f2d19dd JB |
610 | break; |
611 | #endif | |
c180dfd3 MD |
612 | case scm_tc7_pws: |
613 | scm_puts ("#<procedure-with-setter", port); | |
614 | { | |
615 | SCM name = scm_procedure_name (exp); | |
d5cf5324 | 616 | if (!SCM_FALSEP (name)) |
c180dfd3 MD |
617 | { |
618 | scm_putc (' ', port); | |
b24b5e13 | 619 | scm_display (name, port); |
c180dfd3 MD |
620 | } |
621 | } | |
622 | scm_putc ('>', port); | |
623 | break; | |
0f2d19dd | 624 | case scm_tc7_port: |
5ca6dc39 JB |
625 | { |
626 | register long i = SCM_PTOBNUM (exp); | |
627 | if (i < scm_numptob | |
628 | && scm_ptobs[i].print | |
629 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 630 | break; |
5ca6dc39 JB |
631 | goto punk; |
632 | } | |
633 | case scm_tc7_smob: | |
7a7f7c53 DH |
634 | ENTER_NESTED_DATA (pstate, exp, circref); |
635 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
636 | EXIT_NESTED_DATA (pstate); | |
637 | break; | |
0f2d19dd | 638 | default: |
a51ea417 MD |
639 | punk: |
640 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
641 | } |
642 | } | |
643 | } | |
644 | ||
c62fbfe1 MD |
645 | /* Print states are necessary for circular reference safe printing. |
646 | * They are also expensive to allocate. Therefore print states are | |
647 | * kept in a pool so that they can be reused. | |
648 | */ | |
1cc91f1b | 649 | |
bb35f315 MV |
650 | /* The PORT argument can also be a print-state/port pair, which will |
651 | * then be used instead of allocating a new print state. This is | |
652 | * useful for continuing a chain of print calls from Scheme. */ | |
653 | ||
a51ea417 | 654 | void |
1bbd0b84 | 655 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 656 | { |
c4f37e80 MV |
657 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
658 | SCM pstate_scm; | |
c62fbfe1 | 659 | scm_print_state *pstate; |
15635be5 | 660 | int old_writingp; |
c62fbfe1 | 661 | |
bb35f315 MV |
662 | /* If PORT is a print-state/port pair, use that. Else create a new |
663 | print-state. */ | |
c4f37e80 | 664 | |
0c95b57d | 665 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 666 | { |
52235e71 MD |
667 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
668 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
669 | } |
670 | else | |
c62fbfe1 | 671 | { |
c4f37e80 MV |
672 | /* First try to allocate a print state from the pool */ |
673 | SCM_DEFER_INTS; | |
d5cf5324 | 674 | if (!SCM_NULLP (print_state_pool)) |
c4f37e80 | 675 | { |
d5cf5324 DH |
676 | handle = print_state_pool; |
677 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 MV |
678 | } |
679 | SCM_ALLOW_INTS; | |
54778cd3 | 680 | if (SCM_FALSEP (handle)) |
d5cf5324 | 681 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 682 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 683 | } |
c62fbfe1 | 684 | |
c4f37e80 | 685 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 686 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
687 | pstate->writingp = writingp; |
688 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 689 | pstate->writingp = old_writingp; |
c62fbfe1 | 690 | |
bb35f315 MV |
691 | /* Return print state to pool if it has been created above and |
692 | hasn't escaped to Scheme. */ | |
693 | ||
54778cd3 | 694 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 MV |
695 | { |
696 | SCM_DEFER_INTS; | |
d5cf5324 DH |
697 | SCM_SETCDR (handle, print_state_pool); |
698 | print_state_pool = handle; | |
c4f37e80 MV |
699 | SCM_ALLOW_INTS; |
700 | } | |
a51ea417 MD |
701 | } |
702 | ||
0f2d19dd JB |
703 | |
704 | /* Print an integer. | |
705 | */ | |
1cc91f1b | 706 | |
0f2d19dd | 707 | void |
1bbd0b84 | 708 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
709 | { |
710 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 711 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
712 | } |
713 | ||
714 | /* Print an object of unrecognized type. | |
715 | */ | |
1cc91f1b | 716 | |
0f2d19dd | 717 | void |
1bbd0b84 | 718 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 719 | { |
b7f3516f TT |
720 | scm_puts ("#<unknown-", port); |
721 | scm_puts (hdr, port); | |
c8a1bdc4 | 722 | if (scm_in_heap_p (ptr)) |
0f2d19dd | 723 | { |
b7f3516f | 724 | scm_puts (" (0x", port); |
54778cd3 | 725 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 726 | scm_puts (" . 0x", port); |
54778cd3 | 727 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 728 | scm_puts (") @", port); |
0f2d19dd | 729 | } |
b7f3516f | 730 | scm_puts (" 0x", port); |
54778cd3 | 731 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 732 | scm_putc ('>', port); |
0f2d19dd JB |
733 | } |
734 | ||
1cc91f1b | 735 | |
904a077d | 736 | /* Print a list. |
22a52da1 | 737 | */ |
0f2d19dd | 738 | void |
34d19ef6 | 739 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 740 | { |
c62fbfe1 | 741 | register SCM hare, tortoise; |
c014a02e | 742 | long floor = pstate->top - 2; |
b7f3516f | 743 | scm_puts (hdr, port); |
0f2d19dd | 744 | /* CHECK_INTS; */ |
c62fbfe1 MD |
745 | if (pstate->fancyp) |
746 | goto fancy_printing; | |
747 | ||
748 | /* Run a hare and tortoise so that total time complexity will be | |
749 | O(depth * N) instead of O(N^2). */ | |
750 | hare = SCM_CDR (exp); | |
751 | tortoise = exp; | |
904a077d | 752 | while (SCM_CONSP (hare)) |
c62fbfe1 | 753 | { |
54778cd3 | 754 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
755 | goto fancy_printing; |
756 | hare = SCM_CDR (hare); | |
d5cf5324 | 757 | if (!SCM_CONSP (hare)) |
c62fbfe1 MD |
758 | break; |
759 | hare = SCM_CDR (hare); | |
760 | tortoise = SCM_CDR (tortoise); | |
761 | } | |
762 | ||
763 | /* No cdr cycles intrinsic to this list */ | |
764 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
904a077d | 765 | for (exp = SCM_CDR (exp); SCM_CONSP (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 766 | { |
c014a02e | 767 | register long i; |
5ca6dc39 | 768 | |
c62fbfe1 | 769 | for (i = floor; i >= 0; --i) |
230d095f | 770 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
771 | goto circref; |
772 | PUSH_REF (pstate, exp); | |
b7f3516f | 773 | scm_putc (' ', port); |
0f2d19dd | 774 | /* CHECK_INTS; */ |
c62fbfe1 | 775 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 776 | } |
c96d76b8 | 777 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 778 | { |
b7f3516f | 779 | scm_puts (" . ", port); |
c62fbfe1 | 780 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 781 | } |
c62fbfe1 | 782 | |
a51ea417 | 783 | end: |
b7f3516f | 784 | scm_putc (tlr, port); |
c62fbfe1 | 785 | pstate->top = floor + 2; |
a51ea417 | 786 | return; |
c62fbfe1 MD |
787 | |
788 | fancy_printing: | |
789 | { | |
c014a02e | 790 | long n = pstate->length; |
c62fbfe1 MD |
791 | |
792 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
793 | exp = SCM_CDR (exp); --n; | |
904a077d | 794 | for (; SCM_CONSP (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 795 | { |
c014a02e | 796 | register unsigned long i; |
5ca6dc39 | 797 | |
c62fbfe1 | 798 | for (i = 0; i < pstate->top; ++i) |
230d095f | 799 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
800 | goto fancy_circref; |
801 | if (pstate->fancyp) | |
802 | { | |
803 | if (n == 0) | |
804 | { | |
b7f3516f | 805 | scm_puts (" ...", port); |
c62fbfe1 MD |
806 | goto skip_tail; |
807 | } | |
808 | else | |
809 | --n; | |
810 | } | |
811 | PUSH_REF(pstate, exp); | |
812 | ++pstate->list_offset; | |
b7f3516f | 813 | scm_putc (' ', port); |
c62fbfe1 MD |
814 | /* CHECK_INTS; */ |
815 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
816 | } | |
817 | } | |
c96d76b8 | 818 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 819 | { |
b7f3516f | 820 | scm_puts (" . ", port); |
c62fbfe1 MD |
821 | scm_iprin1 (exp, port, pstate); |
822 | } | |
823 | skip_tail: | |
824 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 825 | goto end; |
a51ea417 | 826 | |
c62fbfe1 MD |
827 | fancy_circref: |
828 | pstate->list_offset -= pstate->top - floor - 2; | |
829 | ||
830 | circref: | |
b7f3516f | 831 | scm_puts (" . ", port); |
c62fbfe1 MD |
832 | print_circref (port, pstate, exp); |
833 | goto end; | |
0f2d19dd JB |
834 | } |
835 | ||
836 | \f | |
837 | ||
bb35f315 MV |
838 | int |
839 | scm_valid_oport_value_p (SCM val) | |
840 | { | |
368cf54d GB |
841 | return (SCM_OPOUTPORTP (val) |
842 | || (SCM_PORT_WITH_PS_P (val) | |
843 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
844 | } |
845 | ||
8b840115 | 846 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 847 | |
0f2d19dd | 848 | SCM |
1bbd0b84 | 849 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
850 | { |
851 | if (SCM_UNBNDP (port)) | |
852 | port = scm_cur_outp; | |
3eb7e6ee JB |
853 | |
854 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 855 | |
a51ea417 | 856 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
857 | #ifdef HAVE_PIPE |
858 | # ifdef EPIPE | |
859 | if (EPIPE == errno) | |
860 | scm_close_port (port); | |
861 | # endif | |
862 | #endif | |
863 | return SCM_UNSPECIFIED; | |
864 | } | |
865 | ||
866 | ||
8b840115 | 867 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 868 | |
0f2d19dd | 869 | SCM |
1bbd0b84 | 870 | scm_display (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_display); | |
bb35f315 | 876 | |
a51ea417 | 877 | scm_prin1 (obj, port, 0); |
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 | ||
70d63753 GB |
887 | |
888 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
889 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
890 | "Write @var{message} to @var{destination}, defaulting to\n" |
891 | "the current output port.\n" | |
892 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
893 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
894 | "the escapes are replaced with corresponding members of\n" | |
895 | "@var{ARGS}:\n" | |
896 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
897 | "using @code{write}.\n" | |
898 | "If @var{destination} is @code{#t}, then use the current output\n" | |
899 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
900 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
901 | #define FUNC_NAME s_scm_simple_format |
902 | { | |
903 | SCM answer = SCM_UNSPECIFIED; | |
904 | int fReturnString = 0; | |
905 | int writingp; | |
906 | char *start; | |
b24b5e13 | 907 | char *end; |
70d63753 GB |
908 | char *p; |
909 | ||
daba1a71 MD |
910 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
911 | { | |
912 | destination = scm_cur_outp; | |
913 | } | |
914 | else if (SCM_FALSEP (destination)) | |
915 | { | |
916 | fReturnString = 1; | |
917 | destination = scm_mkstrport (SCM_INUM0, | |
918 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
919 | SCM_OPN | SCM_WRTNG, | |
920 | FUNC_NAME); | |
921 | } | |
922 | else | |
923 | { | |
924 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
925 | destination = SCM_COERCE_OUTPORT (destination); | |
926 | } | |
927 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 928 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 929 | |
34f0f2b8 | 930 | start = SCM_STRING_CHARS (message); |
b24b5e13 DH |
931 | end = start + SCM_STRING_LENGTH (message); |
932 | for (p = start; p != end; ++p) | |
70d63753 GB |
933 | if (*p == '~') |
934 | { | |
b24b5e13 | 935 | if (++p == end) |
6662998f MV |
936 | break; |
937 | ||
938 | switch (*p) | |
939 | { | |
940 | case 'A': case 'a': | |
941 | writingp = 0; | |
942 | break; | |
943 | case 'S': case 's': | |
944 | writingp = 1; | |
945 | break; | |
946 | case '~': | |
947 | scm_lfwrite (start, p - start, destination); | |
948 | start = p + 1; | |
949 | continue; | |
950 | case '%': | |
ba427176 | 951 | scm_lfwrite (start, p - start - 1, destination); |
6662998f MV |
952 | scm_newline (destination); |
953 | start = p + 1; | |
954 | continue; | |
955 | default: | |
1afff620 KN |
956 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
957 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f MV |
958 | |
959 | } | |
70d63753 | 960 | |
6662998f MV |
961 | |
962 | if (!SCM_CONSP (args)) | |
1afff620 KN |
963 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
964 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f | 965 | |
70d63753 GB |
966 | scm_lfwrite (start, p - start - 1, destination); |
967 | scm_prin1 (SCM_CAR (args), destination, writingp); | |
968 | args = SCM_CDR (args); | |
969 | start = p + 1; | |
970 | } | |
6662998f | 971 | |
70d63753 | 972 | scm_lfwrite (start, p - start, destination); |
d5cf5324 | 973 | if (!SCM_EQ_P (args, SCM_EOL)) |
1afff620 KN |
974 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
975 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
976 | |
977 | if (fReturnString) | |
978 | answer = scm_strport_to_string (destination); | |
979 | ||
daba1a71 | 980 | return scm_return_first (answer, message); |
70d63753 GB |
981 | } |
982 | #undef FUNC_NAME | |
983 | ||
984 | ||
3b3b36dd | 985 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 986 | (SCM port), |
8f85c0c6 NJ |
987 | "Send a newline to @var{port}.\n" |
988 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 989 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
990 | { |
991 | if (SCM_UNBNDP (port)) | |
bb35f315 | 992 | port = scm_cur_outp; |
3eb7e6ee | 993 | |
34d19ef6 | 994 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 995 | |
0ef4ae82 | 996 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
997 | return SCM_UNSPECIFIED; |
998 | } | |
1bbd0b84 | 999 | #undef FUNC_NAME |
0f2d19dd | 1000 | |
3b3b36dd | 1001 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1002 | (SCM chr, SCM port), |
eca65e90 | 1003 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1004 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1005 | { |
1006 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1007 | port = scm_cur_outp; |
3eb7e6ee | 1008 | |
34d19ef6 HWN |
1009 | SCM_VALIDATE_CHAR (1, chr); |
1010 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
bb35f315 | 1011 | |
7866a09b | 1012 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1013 | #ifdef HAVE_PIPE |
1014 | # ifdef EPIPE | |
1015 | if (EPIPE == errno) | |
1016 | scm_close_port (port); | |
1017 | # endif | |
1018 | #endif | |
1019 | return SCM_UNSPECIFIED; | |
1020 | } | |
1bbd0b84 | 1021 | #undef FUNC_NAME |
0f2d19dd | 1022 | |
0f2d19dd JB |
1023 | \f |
1024 | ||
bb35f315 | 1025 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1026 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1027 | * containing PORT and PSTATE. This object can be used as the port for | |
1028 | * display/write etc to continue the current print chain. The REVEALED | |
1029 | * field of PSTATE is set to true to indicate that the print state has | |
1030 | * escaped to Scheme and thus has to be freed by the GC. | |
1031 | */ | |
1032 | ||
92c2555f | 1033 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1034 | |
1035 | /* Print exactly as the port itself would */ | |
1036 | ||
1037 | static int | |
e841c3e0 | 1038 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1039 | { |
1040 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1041 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1042 | } | |
c4f37e80 MV |
1043 | |
1044 | SCM | |
1bbd0b84 | 1045 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1046 | { |
c19bc088 | 1047 | SCM pwps; |
bb35f315 | 1048 | SCM pair = scm_cons (port, pstate->handle); |
54778cd3 | 1049 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (pair)); |
bb35f315 | 1050 | pstate->revealed = 1; |
fdc28395 | 1051 | return scm_call_2 (proc, exp, pwps); |
c19bc088 MD |
1052 | } |
1053 | ||
a1ec6916 | 1054 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 2, 0, 0, |
1bbd0b84 | 1055 | (SCM port, SCM pstate), |
71331188 MG |
1056 | "Create a new port which behaves like @var{port}, but with an\n" |
1057 | "included print state @var{pstate}.") | |
1bbd0b84 | 1058 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 MD |
1059 | { |
1060 | SCM pwps; | |
34d19ef6 HWN |
1061 | SCM_VALIDATE_OPORT_VALUE (1, port); |
1062 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
c19bc088 | 1063 | port = SCM_COERCE_OUTPORT (port); |
54778cd3 | 1064 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (scm_cons (port, pstate))); |
c19bc088 MD |
1065 | return pwps; |
1066 | } | |
1bbd0b84 | 1067 | #undef FUNC_NAME |
c19bc088 | 1068 | |
a1ec6916 | 1069 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1070 | (SCM port), |
71331188 MG |
1071 | "Return the print state of the port @var{port}. If @var{port}\n" |
1072 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1073 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1074 | { |
368cf54d GB |
1075 | if (SCM_PORT_WITH_PS_P (port)) |
1076 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1077 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1078 | return SCM_BOOL_F; |
276dd677 | 1079 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1080 | } |
1bbd0b84 | 1081 | #undef FUNC_NAME |
bb35f315 | 1082 | |
c4f37e80 | 1083 | \f |
1cc91f1b | 1084 | |
0f2d19dd JB |
1085 | void |
1086 | scm_init_print () | |
0f2d19dd | 1087 | { |
c19bc088 | 1088 | SCM vtable, layout, type; |
d5cf5324 | 1089 | |
b7ff98dd | 1090 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
d5cf5324 DH |
1091 | |
1092 | scm_gc_register_root (&print_state_pool); | |
1093 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1094 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
4bfdf158 | 1095 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
1afff620 | 1096 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
38ae064c | 1097 | scm_set_struct_vtable_name_x (type, scm_str2symbol ("print-state")); |
bb35f315 | 1098 | scm_print_state_vtable = type; |
c4f37e80 | 1099 | |
c19bc088 MD |
1100 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1101 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1102 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1103 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
c19bc088 | 1104 | |
a0599745 | 1105 | #include "libguile/print.x" |
0f2d19dd | 1106 | } |
89e00824 ML |
1107 | |
1108 | /* | |
1109 | Local Variables: | |
1110 | c-file-style: "gnu" | |
1111 | End: | |
1112 | */ |