Commit | Line | Data |
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e20d7001 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
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 | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
e6e2e95a | 25 | #include <errno.h> |
eca29b02 | 26 | #include <uniconv.h> |
904a78f1 | 27 | #include <unictype.h> |
e6e2e95a | 28 | |
a0599745 MD |
29 | #include "libguile/_scm.h" |
30 | #include "libguile/chars.h" | |
a002f1a2 | 31 | #include "libguile/continuations.h" |
a0599745 MD |
32 | #include "libguile/smob.h" |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/macros.h" | |
35 | #include "libguile/procprop.h" | |
36 | #include "libguile/read.h" | |
37 | #include "libguile/weaks.h" | |
2fb924f6 | 38 | #include "libguile/programs.h" |
a0599745 MD |
39 | #include "libguile/unif.h" |
40 | #include "libguile/alist.h" | |
41 | #include "libguile/struct.h" | |
42 | #include "libguile/objects.h" | |
43 | #include "libguile/ports.h" | |
44 | #include "libguile/root.h" | |
45 | #include "libguile/strings.h" | |
46 | #include "libguile/strports.h" | |
47 | #include "libguile/vectors.h" | |
c96d76b8 | 48 | #include "libguile/lang.h" |
327967ef | 49 | #include "libguile/numbers.h" |
a0599745 MD |
50 | |
51 | #include "libguile/validate.h" | |
52 | #include "libguile/print.h" | |
22fc179a HWN |
53 | |
54 | #include "libguile/private-options.h" | |
55 | ||
0f2d19dd JB |
56 | \f |
57 | ||
58 | /* {Names of immediate symbols} | |
59 | * | |
60 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
61 | */ | |
62 | ||
e17d318f DH |
63 | /* This table must agree with the list of flags in tags.h. */ |
64 | static const char *iflagnames[] = | |
65 | { | |
66 | "#f", | |
67 | "#t", | |
68 | "#<undefined>", | |
69 | "#<eof>", | |
70 | "()", | |
71 | "#<unspecified>", | |
72 | ||
73 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
74 | "#<unbound>", | |
75 | ||
76 | /* Elisp nil value. This is its Scheme name; whenever it's printed in | |
77 | * Elisp, it should appear as the symbol `nil'. */ | |
78 | "#nil" | |
79 | }; | |
80 | ||
475fa9a5 MV |
81 | SCM_SYMBOL (sym_reader, "reader"); |
82 | ||
92c2555f | 83 | scm_t_option scm_print_opts[] = { |
726d810a DH |
84 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
85 | "Hook for printing closures (should handle macros as well)." }, | |
84f6a34a | 86 | { SCM_OPTION_BOOLEAN, "source", 0, |
81ae25da MV |
87 | "Print closures with source." }, |
88 | { SCM_OPTION_SCM, "highlight-prefix", (unsigned long)SCM_BOOL_F, | |
89 | "The string to print before highlighted values." }, | |
90 | { SCM_OPTION_SCM, "highlight-suffix", (unsigned long)SCM_BOOL_F, | |
475fa9a5 MV |
91 | "The string to print after highlighted values." }, |
92 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (unsigned long)SCM_BOOL_F, | |
93 | "How to print symbols that have a colon as their first or last character. " | |
94 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
95 | "'reader' quotes them when the reader option 'keywords' is not '#f'." | |
62560650 HWN |
96 | }, |
97 | { 0 }, | |
98 | ||
e6e4c9af MD |
99 | }; |
100 | ||
a1ec6916 | 101 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 102 | (SCM setting), |
71331188 | 103 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
104 | "this procedure directly, use the procedures\n" |
105 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
106 | "and @code{print-options}.") | |
1bbd0b84 | 107 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 108 | { |
a51ea417 | 109 | SCM ans = scm_options (setting, |
b7ff98dd | 110 | scm_print_opts, |
1bbd0b84 | 111 | FUNC_NAME); |
e6e4c9af MD |
112 | return ans; |
113 | } | |
1bbd0b84 | 114 | #undef FUNC_NAME |
e6e4c9af | 115 | |
0f2d19dd JB |
116 | \f |
117 | /* {Printing of Scheme Objects} | |
118 | */ | |
119 | ||
a51ea417 | 120 | /* Detection of circular references. |
c62fbfe1 MD |
121 | * |
122 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
123 | * time complexity (O (depth * N)), The printer code can be |
124 | * rewritten to be O(N). | |
a51ea417 | 125 | */ |
dbb5de29 NJ |
126 | #define PUSH_REF(pstate, obj) \ |
127 | do \ | |
128 | { \ | |
129 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
130 | pstate->top++; \ | |
131 | if (pstate->top == pstate->ceiling) \ | |
132 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 133 | } while(0) |
a51ea417 | 134 | |
dbb5de29 NJ |
135 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
136 | do \ | |
137 | { \ | |
138 | register unsigned long i; \ | |
139 | for (i = 0; i < pstate->top; ++i) \ | |
140 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
141 | goto label; \ | |
142 | if (pstate->fancyp) \ | |
143 | { \ | |
144 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
145 | { \ | |
146 | scm_putc ('#', port); \ | |
147 | return; \ | |
148 | } \ | |
149 | } \ | |
150 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 151 | } while(0) |
a51ea417 | 152 | |
dbb5de29 NJ |
153 | #define EXIT_NESTED_DATA(pstate) \ |
154 | do \ | |
155 | { \ | |
156 | --pstate->top; \ | |
157 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
158 | } \ | |
159 | while (0) | |
c62fbfe1 | 160 | |
d5cf5324 DH |
161 | SCM scm_print_state_vtable = SCM_BOOL_F; |
162 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 163 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 164 | |
f843a84c | 165 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 166 | |
3b3b36dd | 167 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 168 | (), |
d5cf5324 | 169 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
170 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
171 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 172 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 173 | { |
d2e53ed6 | 174 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 175 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 176 | else |
0a284a4e | 177 | return SCM_BOOL_F; |
c62fbfe1 | 178 | } |
1bbd0b84 GB |
179 | #undef FUNC_NAME |
180 | ||
c62fbfe1 MD |
181 | #endif |
182 | ||
183 | #define PSTATE_SIZE 50L | |
184 | ||
698c0295 | 185 | static SCM |
1bbd0b84 | 186 | make_print_state (void) |
698c0295 | 187 | { |
d5cf5324 DH |
188 | SCM print_state |
189 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 190 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 191 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 192 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 193 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
194 | return print_state; |
195 | } | |
1cc91f1b | 196 | |
c62fbfe1 MD |
197 | SCM |
198 | scm_make_print_state () | |
c62fbfe1 | 199 | { |
230d095f | 200 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
201 | |
202 | /* First try to allocate a print state from the pool */ | |
9de87eea | 203 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 204 | if (!scm_is_null (print_state_pool)) |
698c0295 | 205 | { |
d5cf5324 DH |
206 | answer = SCM_CAR (print_state_pool); |
207 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 208 | } |
9de87eea | 209 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 210 | |
7888309b | 211 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 212 | } |
a51ea417 | 213 | |
698c0295 | 214 | void |
6e8d25a6 | 215 | scm_free_print_state (SCM print_state) |
698c0295 MD |
216 | { |
217 | SCM handle; | |
218 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
219 | /* Cleanup before returning print state to pool. | |
220 | * It is better to do it here. Doing it in scm_prin1 | |
221 | * would cost more since that function is called much more | |
222 | * often. | |
223 | */ | |
224 | pstate->fancyp = 0; | |
bb35f315 | 225 | pstate->revealed = 0; |
d232520a | 226 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 227 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 228 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 229 | print_state_pool = handle; |
9de87eea | 230 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
231 | } |
232 | ||
233 | SCM | |
234 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
235 | { | |
236 | if (SCM_UNBNDP (print_state)) | |
237 | { | |
238 | if (SCM_PORT_WITH_PS_P (port)) | |
239 | return port; | |
240 | else | |
241 | print_state = scm_make_print_state (); | |
242 | /* port does not need to be coerced since it doesn't have ps */ | |
243 | } | |
244 | else | |
245 | port = SCM_COERCE_OUTPORT (port); | |
246 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
247 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 248 | } |
1cc91f1b | 249 | |
a51ea417 | 250 | static void |
1bbd0b84 | 251 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 252 | { |
4057a3e0 MV |
253 | SCM old_vect = pstate->ref_vect; |
254 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
255 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 256 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
257 | unsigned long int i; |
258 | ||
259 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 260 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
261 | |
262 | pstate->ref_vect = new_vect; | |
bf685b6d | 263 | pstate->ceiling = new_size; |
a51ea417 MD |
264 | } |
265 | ||
509759dd MV |
266 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
267 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 268 | |
a51ea417 | 269 | static void |
34d19ef6 | 270 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 271 | { |
c014a02e ML |
272 | register long i; |
273 | long self = pstate->top - 1; | |
c62fbfe1 | 274 | i = pstate->top - 1; |
509759dd | 275 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
276 | { |
277 | while (i > 0) | |
278 | { | |
509759dd MV |
279 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
280 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
281 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
282 | break; |
283 | --i; | |
284 | } | |
285 | self = i; | |
286 | } | |
287 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 288 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 289 | break; |
b7f3516f | 290 | scm_putc ('#', port); |
c62fbfe1 | 291 | scm_intprint (i - self, 10, port); |
b7f3516f | 292 | scm_putc ('#', port); |
a51ea417 MD |
293 | } |
294 | ||
6662998f MV |
295 | /* Print the name of a symbol. */ |
296 | ||
475fa9a5 | 297 | static int |
e23106d5 | 298 | quote_keywordish_symbol (SCM symbol) |
475fa9a5 MV |
299 | { |
300 | SCM option; | |
301 | ||
e23106d5 MG |
302 | if (scm_i_symbol_ref (symbol, 0) != ':' |
303 | && scm_i_symbol_ref (symbol, scm_i_symbol_length (symbol) - 1) != ':') | |
475fa9a5 MV |
304 | return 0; |
305 | ||
306 | option = SCM_PRINT_KEYWORD_STYLE; | |
307 | if (scm_is_false (option)) | |
308 | return 0; | |
309 | if (scm_is_eq (option, sym_reader)) | |
310 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
311 | return 1; | |
312 | } | |
313 | ||
6662998f | 314 | void |
e23106d5 | 315 | scm_i_print_symbol_name (SCM str, SCM port) |
6662998f | 316 | { |
c6b49e89 MV |
317 | /* This points to the first character that has not yet been written to the |
318 | * port. */ | |
319 | size_t pos = 0; | |
320 | /* This points to the character we're currently looking at. */ | |
6662998f | 321 | size_t end; |
c6b49e89 MV |
322 | /* If the name contains weird characters, we'll escape them with |
323 | * backslashes and set this flag; it indicates that we should surround the | |
324 | * name with "#{" and "}#". */ | |
325 | int weird = 0; | |
326 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
327 | * weird because of other characters, backslahes need to be escaped too. | |
328 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
329 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
330 | * everything starting from mw_pos. |
331 | * We could instead make backslashes always weird. This is not necessary | |
332 | * to ensure that the output is (read)-able, but it would make this code | |
333 | * simpler and faster. */ | |
c6b49e89 | 334 | int maybe_weird = 0; |
6662998f | 335 | size_t mw_pos = 0; |
e23106d5 MG |
336 | size_t len = scm_i_symbol_length (str); |
337 | scm_t_wchar str0 = scm_i_symbol_ref (str, 0); | |
6662998f | 338 | |
e23106d5 MG |
339 | if (len == 0 || str0 == '\'' || str0 == '`' || str0 == ',' |
340 | || quote_keywordish_symbol (str) | |
341 | || (str0 == '.' && len == 1) | |
342 | || scm_is_true (scm_i_string_to_number (scm_symbol_to_string (str), 10))) | |
6662998f MV |
343 | { |
344 | scm_lfwrite ("#{", 2, port); | |
345 | weird = 1; | |
346 | } | |
c6b49e89 | 347 | |
6662998f | 348 | for (end = pos; end < len; ++end) |
e23106d5 | 349 | switch (scm_i_symbol_ref (str, end)) |
6662998f MV |
350 | { |
351 | #ifdef BRACKETS_AS_PARENS | |
352 | case '[': | |
353 | case ']': | |
354 | #endif | |
355 | case '(': | |
356 | case ')': | |
357 | case '"': | |
358 | case ';': | |
c6b49e89 | 359 | case '#': |
6662998f MV |
360 | case SCM_WHITE_SPACES: |
361 | case SCM_LINE_INCREMENTORS: | |
362 | weird_handler: | |
363 | if (maybe_weird) | |
364 | { | |
365 | end = mw_pos; | |
366 | maybe_weird = 0; | |
367 | } | |
368 | if (!weird) | |
369 | { | |
370 | scm_lfwrite ("#{", 2, port); | |
371 | weird = 1; | |
372 | } | |
373 | if (pos < end) | |
e23106d5 | 374 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
375 | { |
376 | char buf[2]; | |
377 | buf[0] = '\\'; | |
e23106d5 | 378 | buf[1] = (char) (unsigned char) scm_i_symbol_ref (str, end); |
6662998f MV |
379 | scm_lfwrite (buf, 2, port); |
380 | } | |
381 | pos = end + 1; | |
382 | break; | |
383 | case '\\': | |
384 | if (weird) | |
385 | goto weird_handler; | |
386 | if (!maybe_weird) | |
387 | { | |
388 | maybe_weird = 1; | |
389 | mw_pos = pos; | |
390 | } | |
391 | break; | |
6662998f MV |
392 | default: |
393 | break; | |
394 | } | |
395 | if (pos < end) | |
e23106d5 | 396 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
397 | if (weird) |
398 | scm_lfwrite ("}#", 2, port); | |
399 | } | |
400 | ||
e23106d5 MG |
401 | void |
402 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
403 | { | |
404 | SCM symbol = scm_from_locale_symboln (str, len); | |
405 | return scm_i_print_symbol_name (symbol, port); | |
406 | } | |
407 | ||
c62fbfe1 | 408 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 409 | */ |
8b840115 MD |
410 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
411 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 412 | |
d232520a MV |
413 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
414 | ||
0f2d19dd | 415 | void |
1bbd0b84 | 416 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
417 | { |
418 | if (pstate->fancyp | |
419 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
420 | { | |
81ae25da | 421 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 422 | iprin1 (exp, port, pstate); |
81ae25da | 423 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
424 | } |
425 | else | |
426 | iprin1 (exp, port, pstate); | |
427 | } | |
428 | ||
429 | static void | |
430 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 431 | { |
54778cd3 | 432 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 433 | { |
e34f941a DH |
434 | case scm_tc3_closure: |
435 | case scm_tc3_tc7_1: | |
436 | case scm_tc3_tc7_2: | |
437 | /* These tc3 tags should never occur in an immediate value. They are | |
438 | * only used in cell types of non-immediates, i. e. the value returned | |
439 | * by SCM_CELL_TYPE (exp) can use these tags. | |
440 | */ | |
441 | scm_ipruk ("immediate", exp, port); | |
442 | break; | |
443 | case scm_tc3_int_1: | |
444 | case scm_tc3_int_2: | |
e11e83f3 | 445 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 446 | break; |
e34f941a | 447 | case scm_tc3_imm24: |
7866a09b | 448 | if (SCM_CHARP (exp)) |
0f2d19dd | 449 | { |
904a78f1 | 450 | scm_t_wchar i = SCM_CHAR (exp); |
77332b21 | 451 | const char *name; |
5ca6dc39 | 452 | |
b7f3516f TT |
453 | if (SCM_WRITINGP (pstate)) |
454 | { | |
455 | scm_puts ("#\\", port); | |
77332b21 MG |
456 | name = scm_i_charname (exp); |
457 | if (name != NULL) | |
458 | scm_puts (name, port); | |
904a78f1 MG |
459 | else if (uc_is_general_category_withtable (i, UC_CATEGORY_MASK_L |
460 | | UC_CATEGORY_MASK_M | |
461 | | UC_CATEGORY_MASK_N | |
462 | | UC_CATEGORY_MASK_P | |
463 | | UC_CATEGORY_MASK_S)) | |
464 | /* Print the character if is graphic character. */ | |
465 | { | |
889975e5 MG |
466 | scm_t_wchar *wbuf; |
467 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
468 | char *buf; | |
469 | size_t len; | |
470 | const char *enc; | |
471 | ||
472 | enc = scm_i_get_port_encoding (port); | |
473 | wbuf[0] = i; | |
474 | if (enc == NULL && i <= 0xFF) | |
475 | { | |
476 | /* Character is graphic and Latin-1. Print it */ | |
477 | scm_lfwrite_str (wstr, port); | |
478 | } | |
904a78f1 | 479 | else |
889975e5 MG |
480 | { |
481 | buf = u32_conv_to_encoding (enc, | |
482 | iconveh_error, | |
483 | (scm_t_uint32 *) wbuf, | |
484 | 1, | |
485 | NULL, | |
486 | NULL, &len); | |
487 | if (buf != NULL) | |
488 | { | |
489 | /* Character is graphic. Print it. */ | |
490 | scm_lfwrite_str (wstr, port); | |
491 | free (buf); | |
492 | } | |
493 | else | |
494 | /* Character is graphic but unrepresentable in | |
495 | this port's encoding. */ | |
496 | scm_intprint (i, 8, port); | |
497 | } | |
904a78f1 MG |
498 | } |
499 | else | |
f7118e35 MG |
500 | /* Character is a non-graphical character. */ |
501 | scm_intprint (i, 8, port); | |
b7f3516f TT |
502 | } |
503 | else | |
889975e5 | 504 | scm_i_charprint (i, port); |
0f2d19dd | 505 | } |
a51ea417 | 506 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
507 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
508 | { | |
509 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
510 | } | |
7e6e6b37 | 511 | else if (SCM_ISYMP (exp)) |
e17d318f | 512 | { |
7e6e6b37 | 513 | scm_i_print_isym (exp, port); |
e17d318f | 514 | } |
0f2d19dd JB |
515 | else if (SCM_ILOCP (exp)) |
516 | { | |
7e6e6b37 | 517 | scm_i_print_iloc (exp, port); |
0f2d19dd JB |
518 | } |
519 | else | |
e34f941a DH |
520 | { |
521 | /* unknown immediate value */ | |
522 | scm_ipruk ("immediate", exp, port); | |
523 | } | |
0f2d19dd | 524 | break; |
e34f941a | 525 | case scm_tc3_cons: |
0f2d19dd JB |
526 | switch (SCM_TYP7 (exp)) |
527 | { | |
904a077d MV |
528 | case scm_tcs_struct: |
529 | { | |
530 | ENTER_NESTED_DATA (pstate, exp, circref); | |
531 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
532 | { | |
533 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
534 | if (!print) | |
535 | goto print_struct; | |
dfd03fb9 | 536 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 537 | pstate->revealed = 1; |
904a077d MV |
538 | scm_call_generic_2 (print, exp, pwps); |
539 | } | |
540 | else | |
541 | { | |
542 | print_struct: | |
543 | scm_print_struct (exp, port, pstate); | |
544 | } | |
545 | EXIT_NESTED_DATA (pstate); | |
546 | } | |
547 | break; | |
0f2d19dd JB |
548 | case scm_tcs_cons_imcar: |
549 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
550 | ENTER_NESTED_DATA (pstate, exp, circref); |
551 | scm_iprlist ("(", exp, ')', port, pstate); | |
552 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
553 | break; |
554 | circref: | |
c62fbfe1 | 555 | print_circref (port, pstate, exp); |
0f2d19dd JB |
556 | break; |
557 | case scm_tcs_closures: | |
7888309b MV |
558 | if (scm_is_false (scm_procedure_p (SCM_PRINT_CLOSURE)) |
559 | || scm_is_false (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 560 | exp, port, pstate))) |
726d810a DH |
561 | { |
562 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
563 | scm_puts ("#<procedure", port); | |
564 | scm_putc (' ', port); | |
565 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
566 | scm_putc (' ', port); | |
567 | if (SCM_PRINT_SOURCE_P) | |
568 | { | |
569 | SCM env = SCM_ENV (exp); | |
570 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
9fcf3cbb | 571 | SCM src = scm_i_unmemocopy_body (SCM_CODE (exp), xenv); |
726d810a DH |
572 | ENTER_NESTED_DATA (pstate, exp, circref); |
573 | scm_iprin1 (src, port, pstate); | |
574 | EXIT_NESTED_DATA (pstate); | |
575 | } | |
576 | else | |
577 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 578 | scm_putc ('>', port); |
726d810a | 579 | } |
0f2d19dd | 580 | break; |
534c55a9 DH |
581 | case scm_tc7_number: |
582 | switch SCM_TYP16 (exp) { | |
583 | case scm_tc16_big: | |
584 | scm_bigprint (exp, port, pstate); | |
585 | break; | |
586 | case scm_tc16_real: | |
587 | scm_print_real (exp, port, pstate); | |
588 | break; | |
589 | case scm_tc16_complex: | |
590 | scm_print_complex (exp, port, pstate); | |
591 | break; | |
f92e85f7 MV |
592 | case scm_tc16_fraction: |
593 | scm_i_print_fraction (exp, port, pstate); | |
594 | break; | |
534c55a9 DH |
595 | } |
596 | break; | |
9c44cd45 MG |
597 | case scm_tc7_string: |
598 | if (SCM_WRITINGP (pstate)) | |
599 | { | |
600 | size_t i, j, len; | |
601 | static char const hex[] = "0123456789abcdef"; | |
602 | char buf[8]; | |
5ca6dc39 | 603 | |
9c44cd45 MG |
604 | |
605 | scm_putc ('"', port); | |
606 | len = scm_i_string_length (exp); | |
607 | for (i = 0; i < len; ++i) | |
608 | { | |
609 | scm_t_wchar ch = scm_i_string_ref (exp, i); | |
610 | int printed = 0; | |
611 | ||
612 | if (ch == ' ' || ch == '\n') | |
613 | { | |
614 | scm_putc (ch, port); | |
615 | printed = 1; | |
616 | } | |
617 | else if (ch == '"' || ch == '\\') | |
618 | { | |
619 | scm_putc ('\\', port); | |
32be5735 | 620 | scm_i_charprint (ch, port); |
9c44cd45 MG |
621 | printed = 1; |
622 | } | |
623 | else | |
624 | if (uc_is_general_category_withtable | |
625 | (ch, | |
626 | UC_CATEGORY_MASK_L | UC_CATEGORY_MASK_M | | |
627 | UC_CATEGORY_MASK_N | UC_CATEGORY_MASK_P | | |
628 | UC_CATEGORY_MASK_S)) | |
629 | { | |
630 | /* Print the character since it is a graphic | |
631 | character. */ | |
632 | scm_t_wchar *wbuf; | |
633 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
634 | char *buf; | |
635 | size_t len; | |
889975e5 MG |
636 | |
637 | if (scm_i_get_port_encoding (port)) | |
9c44cd45 | 638 | { |
889975e5 MG |
639 | wstr = scm_i_make_wide_string (1, &wbuf); |
640 | wbuf[0] = ch; | |
641 | buf = u32_conv_to_encoding (scm_i_get_port_encoding (port), | |
642 | iconveh_error, | |
643 | (scm_t_uint32 *) wbuf, | |
644 | 1 , | |
645 | NULL, | |
646 | NULL, &len); | |
647 | if (buf != NULL) | |
648 | { | |
649 | /* Character is graphic and representable in | |
650 | this encoding. Print it. */ | |
651 | scm_lfwrite_str (wstr, port); | |
652 | free (buf); | |
653 | printed = 1; | |
654 | } | |
9c44cd45 | 655 | } |
889975e5 MG |
656 | else |
657 | if (ch <= 0xFF) | |
658 | { | |
659 | scm_putc (ch, port); | |
660 | printed = 1; | |
661 | } | |
9c44cd45 MG |
662 | } |
663 | ||
664 | if (!printed) | |
665 | { | |
666 | /* Character is graphic but unrepresentable in | |
667 | this port's encoding or is not graphic. */ | |
668 | if (ch <= 0xFF) | |
669 | { | |
670 | buf[0] = '\\'; | |
671 | buf[1] = 'x'; | |
672 | buf[2] = hex[ch / 16]; | |
673 | buf[3] = hex[ch % 16]; | |
674 | scm_lfwrite (buf, 4, port); | |
675 | } | |
676 | else if (ch <= 0xFFFF) | |
677 | { | |
678 | buf[0] = '\\'; | |
679 | buf[1] = 'u'; | |
680 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
681 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
682 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
683 | buf[5] = hex[(ch & 0xF)]; | |
684 | scm_lfwrite (buf, 6, port); | |
685 | j = i + 1; | |
686 | } | |
687 | else if (ch > 0xFFFF) | |
688 | { | |
689 | buf[0] = '\\'; | |
690 | buf[1] = 'U'; | |
691 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
692 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
693 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
694 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
695 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
696 | buf[7] = hex[(ch & 0xF)]; | |
697 | scm_lfwrite (buf, 8, port); | |
698 | j = i + 1; | |
699 | } | |
700 | } | |
701 | } | |
702 | scm_putc ('"', port); | |
703 | scm_remember_upto_here_1 (exp); | |
704 | } | |
705 | else | |
6234ff20 | 706 | scm_lfwrite_str (exp, port); |
9c44cd45 MG |
707 | scm_remember_upto_here_1 (exp); |
708 | break; | |
28b06554 | 709 | case scm_tc7_symbol: |
cc95e00a | 710 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 711 | { |
e23106d5 | 712 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
713 | scm_remember_upto_here_1 (exp); |
714 | } | |
715 | else | |
716 | { | |
717 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 718 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 719 | scm_putc (' ', port); |
0345e278 | 720 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
721 | scm_putc ('>', port); |
722 | } | |
6662998f | 723 | break; |
e5aca4b5 MV |
724 | case scm_tc7_variable: |
725 | scm_i_variable_print (exp, port, pstate); | |
726 | break; | |
2fb924f6 AW |
727 | case scm_tc7_program: |
728 | scm_i_program_print (exp, port, pstate); | |
729 | break; | |
0f2d19dd | 730 | case scm_tc7_wvect: |
c62fbfe1 | 731 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 732 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 733 | scm_puts ("#wh(", port); |
0f2d19dd | 734 | else |
b7f3516f | 735 | scm_puts ("#w(", port); |
0f2d19dd JB |
736 | goto common_vector_printer; |
737 | ||
738 | case scm_tc7_vector: | |
c62fbfe1 | 739 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 740 | scm_puts ("#(", port); |
0f2d19dd | 741 | common_vector_printer: |
9fbaf27c | 742 | { |
c014a02e | 743 | register long i; |
4057a3e0 | 744 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 745 | int cutp = 0; |
4057a3e0 MV |
746 | if (pstate->fancyp |
747 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
748 | { |
749 | last = pstate->length - 1; | |
750 | cutp = 1; | |
751 | } | |
752 | for (i = 0; i < last; ++i) | |
753 | { | |
754 | /* CHECK_INTS; */ | |
4057a3e0 | 755 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); |
b7f3516f | 756 | scm_putc (' ', port); |
9fbaf27c MD |
757 | } |
758 | if (i == last) | |
759 | { | |
760 | /* CHECK_INTS; */ | |
4057a3e0 | 761 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); |
9fbaf27c MD |
762 | } |
763 | if (cutp) | |
b7f3516f TT |
764 | scm_puts (" ...", port); |
765 | scm_putc (')', port); | |
9fbaf27c | 766 | } |
c62fbfe1 | 767 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 768 | break; |
0f2d19dd | 769 | case scm_tcs_subrs: |
e23106d5 MG |
770 | { |
771 | SCM name = scm_symbol_to_string (SCM_SUBR_NAME (exp)); | |
772 | scm_puts (SCM_SUBR_GENERIC (exp) | |
773 | ? "#<primitive-generic " | |
774 | : "#<primitive-procedure ", | |
775 | port); | |
776 | scm_lfwrite_str (name, port); | |
777 | scm_putc ('>', port); | |
778 | break; | |
779 | } | |
c180dfd3 MD |
780 | case scm_tc7_pws: |
781 | scm_puts ("#<procedure-with-setter", port); | |
782 | { | |
783 | SCM name = scm_procedure_name (exp); | |
7888309b | 784 | if (scm_is_true (name)) |
c180dfd3 MD |
785 | { |
786 | scm_putc (' ', port); | |
b24b5e13 | 787 | scm_display (name, port); |
c180dfd3 MD |
788 | } |
789 | } | |
790 | scm_putc ('>', port); | |
791 | break; | |
0f2d19dd | 792 | case scm_tc7_port: |
5ca6dc39 JB |
793 | { |
794 | register long i = SCM_PTOBNUM (exp); | |
795 | if (i < scm_numptob | |
796 | && scm_ptobs[i].print | |
797 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 798 | break; |
5ca6dc39 JB |
799 | goto punk; |
800 | } | |
801 | case scm_tc7_smob: | |
7a7f7c53 DH |
802 | ENTER_NESTED_DATA (pstate, exp, circref); |
803 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
804 | EXIT_NESTED_DATA (pstate); | |
805 | break; | |
0f2d19dd | 806 | default: |
a51ea417 MD |
807 | punk: |
808 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
809 | } |
810 | } | |
811 | } | |
812 | ||
c62fbfe1 MD |
813 | /* Print states are necessary for circular reference safe printing. |
814 | * They are also expensive to allocate. Therefore print states are | |
815 | * kept in a pool so that they can be reused. | |
816 | */ | |
1cc91f1b | 817 | |
bb35f315 MV |
818 | /* The PORT argument can also be a print-state/port pair, which will |
819 | * then be used instead of allocating a new print state. This is | |
820 | * useful for continuing a chain of print calls from Scheme. */ | |
821 | ||
a51ea417 | 822 | void |
1bbd0b84 | 823 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 824 | { |
c4f37e80 MV |
825 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
826 | SCM pstate_scm; | |
c62fbfe1 | 827 | scm_print_state *pstate; |
15635be5 | 828 | int old_writingp; |
c62fbfe1 | 829 | |
bb35f315 MV |
830 | /* If PORT is a print-state/port pair, use that. Else create a new |
831 | print-state. */ | |
c4f37e80 | 832 | |
0c95b57d | 833 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 834 | { |
52235e71 MD |
835 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
836 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
837 | } |
838 | else | |
c62fbfe1 | 839 | { |
c4f37e80 | 840 | /* First try to allocate a print state from the pool */ |
9de87eea | 841 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 842 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 843 | { |
d5cf5324 DH |
844 | handle = print_state_pool; |
845 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 846 | } |
9de87eea | 847 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 848 | if (scm_is_false (handle)) |
d5cf5324 | 849 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 850 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 851 | } |
c62fbfe1 | 852 | |
c4f37e80 | 853 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 854 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
855 | pstate->writingp = writingp; |
856 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 857 | pstate->writingp = old_writingp; |
c62fbfe1 | 858 | |
bb35f315 MV |
859 | /* Return print state to pool if it has been created above and |
860 | hasn't escaped to Scheme. */ | |
861 | ||
7888309b | 862 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 863 | { |
9de87eea | 864 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
865 | SCM_SETCDR (handle, print_state_pool); |
866 | print_state_pool = handle; | |
9de87eea | 867 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 868 | } |
a51ea417 MD |
869 | } |
870 | ||
9c44cd45 MG |
871 | /* Print a character. |
872 | */ | |
873 | void | |
889975e5 | 874 | scm_i_charprint (scm_t_wchar ch, SCM port) |
9c44cd45 MG |
875 | { |
876 | scm_t_wchar *wbuf; | |
877 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
878 | ||
879 | wbuf[0] = ch; | |
880 | scm_lfwrite_str (wstr, port); | |
881 | } | |
0f2d19dd JB |
882 | |
883 | /* Print an integer. | |
884 | */ | |
1cc91f1b | 885 | |
0f2d19dd | 886 | void |
a406c9e9 | 887 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
888 | { |
889 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 890 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
891 | } |
892 | ||
a406c9e9 MV |
893 | void |
894 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
895 | { | |
896 | char num_buf[SCM_INTBUFLEN]; | |
897 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
898 | } | |
899 | ||
0f2d19dd JB |
900 | /* Print an object of unrecognized type. |
901 | */ | |
1cc91f1b | 902 | |
0f2d19dd | 903 | void |
1bbd0b84 | 904 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 905 | { |
b7f3516f TT |
906 | scm_puts ("#<unknown-", port); |
907 | scm_puts (hdr, port); | |
c8a1bdc4 | 908 | if (scm_in_heap_p (ptr)) |
0f2d19dd | 909 | { |
b7f3516f | 910 | scm_puts (" (0x", port); |
0345e278 | 911 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 912 | scm_puts (" . 0x", port); |
0345e278 | 913 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 914 | scm_puts (") @", port); |
0f2d19dd | 915 | } |
b7f3516f | 916 | scm_puts (" 0x", port); |
0345e278 | 917 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 918 | scm_putc ('>', port); |
0f2d19dd JB |
919 | } |
920 | ||
1cc91f1b | 921 | |
904a077d | 922 | /* Print a list. |
22a52da1 | 923 | */ |
0f2d19dd | 924 | void |
34d19ef6 | 925 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 926 | { |
c62fbfe1 | 927 | register SCM hare, tortoise; |
c014a02e | 928 | long floor = pstate->top - 2; |
b7f3516f | 929 | scm_puts (hdr, port); |
0f2d19dd | 930 | /* CHECK_INTS; */ |
c62fbfe1 MD |
931 | if (pstate->fancyp) |
932 | goto fancy_printing; | |
933 | ||
934 | /* Run a hare and tortoise so that total time complexity will be | |
935 | O(depth * N) instead of O(N^2). */ | |
936 | hare = SCM_CDR (exp); | |
937 | tortoise = exp; | |
d2e53ed6 | 938 | while (scm_is_pair (hare)) |
c62fbfe1 | 939 | { |
bc36d050 | 940 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
941 | goto fancy_printing; |
942 | hare = SCM_CDR (hare); | |
d2e53ed6 | 943 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
944 | break; |
945 | hare = SCM_CDR (hare); | |
946 | tortoise = SCM_CDR (tortoise); | |
947 | } | |
948 | ||
949 | /* No cdr cycles intrinsic to this list */ | |
950 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 951 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 952 | { |
c014a02e | 953 | register long i; |
5ca6dc39 | 954 | |
c62fbfe1 | 955 | for (i = floor; i >= 0; --i) |
509759dd | 956 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
957 | goto circref; |
958 | PUSH_REF (pstate, exp); | |
b7f3516f | 959 | scm_putc (' ', port); |
0f2d19dd | 960 | /* CHECK_INTS; */ |
c62fbfe1 | 961 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 962 | } |
c96d76b8 | 963 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 964 | { |
b7f3516f | 965 | scm_puts (" . ", port); |
c62fbfe1 | 966 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 967 | } |
c62fbfe1 | 968 | |
a51ea417 | 969 | end: |
b7f3516f | 970 | scm_putc (tlr, port); |
c62fbfe1 | 971 | pstate->top = floor + 2; |
a51ea417 | 972 | return; |
c62fbfe1 MD |
973 | |
974 | fancy_printing: | |
975 | { | |
c014a02e | 976 | long n = pstate->length; |
c62fbfe1 MD |
977 | |
978 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
979 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 980 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 981 | { |
c014a02e | 982 | register unsigned long i; |
5ca6dc39 | 983 | |
c62fbfe1 | 984 | for (i = 0; i < pstate->top; ++i) |
509759dd | 985 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
986 | goto fancy_circref; |
987 | if (pstate->fancyp) | |
988 | { | |
989 | if (n == 0) | |
990 | { | |
b7f3516f | 991 | scm_puts (" ...", port); |
c62fbfe1 MD |
992 | goto skip_tail; |
993 | } | |
994 | else | |
995 | --n; | |
996 | } | |
997 | PUSH_REF(pstate, exp); | |
998 | ++pstate->list_offset; | |
b7f3516f | 999 | scm_putc (' ', port); |
c62fbfe1 MD |
1000 | /* CHECK_INTS; */ |
1001 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1002 | } | |
1003 | } | |
c96d76b8 | 1004 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1005 | { |
b7f3516f | 1006 | scm_puts (" . ", port); |
c62fbfe1 MD |
1007 | scm_iprin1 (exp, port, pstate); |
1008 | } | |
1009 | skip_tail: | |
1010 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1011 | goto end; |
a51ea417 | 1012 | |
c62fbfe1 MD |
1013 | fancy_circref: |
1014 | pstate->list_offset -= pstate->top - floor - 2; | |
1015 | ||
1016 | circref: | |
b7f3516f | 1017 | scm_puts (" . ", port); |
c62fbfe1 MD |
1018 | print_circref (port, pstate, exp); |
1019 | goto end; | |
0f2d19dd JB |
1020 | } |
1021 | ||
1022 | \f | |
1023 | ||
bb35f315 MV |
1024 | int |
1025 | scm_valid_oport_value_p (SCM val) | |
1026 | { | |
368cf54d GB |
1027 | return (SCM_OPOUTPORTP (val) |
1028 | || (SCM_PORT_WITH_PS_P (val) | |
1029 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1030 | } |
1031 | ||
8b840115 | 1032 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1033 | |
0f2d19dd | 1034 | SCM |
1bbd0b84 | 1035 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1036 | { |
1037 | if (SCM_UNBNDP (port)) | |
9de87eea | 1038 | port = scm_current_output_port (); |
3eb7e6ee JB |
1039 | |
1040 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1041 | |
a51ea417 | 1042 | scm_prin1 (obj, port, 1); |
23d72566 | 1043 | #if 0 |
0f2d19dd JB |
1044 | #ifdef HAVE_PIPE |
1045 | # ifdef EPIPE | |
1046 | if (EPIPE == errno) | |
1047 | scm_close_port (port); | |
1048 | # endif | |
23d72566 | 1049 | #endif |
0f2d19dd JB |
1050 | #endif |
1051 | return SCM_UNSPECIFIED; | |
1052 | } | |
1053 | ||
1054 | ||
8b840115 | 1055 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1056 | |
0f2d19dd | 1057 | SCM |
1bbd0b84 | 1058 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1059 | { |
1060 | if (SCM_UNBNDP (port)) | |
9de87eea | 1061 | port = scm_current_output_port (); |
3eb7e6ee JB |
1062 | |
1063 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1064 | |
a51ea417 | 1065 | scm_prin1 (obj, port, 0); |
23d72566 | 1066 | #if 0 |
0f2d19dd JB |
1067 | #ifdef HAVE_PIPE |
1068 | # ifdef EPIPE | |
1069 | if (EPIPE == errno) | |
1070 | scm_close_port (port); | |
1071 | # endif | |
23d72566 | 1072 | #endif |
0f2d19dd JB |
1073 | #endif |
1074 | return SCM_UNSPECIFIED; | |
1075 | } | |
1076 | ||
70d63753 GB |
1077 | |
1078 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1079 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1080 | "Write @var{message} to @var{destination}, defaulting to\n" |
1081 | "the current output port.\n" | |
1082 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1083 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1084 | "the escapes are replaced with corresponding members of\n" | |
1085 | "@var{ARGS}:\n" | |
1086 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1087 | "using @code{write}.\n" | |
1088 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1089 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1090 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1091 | #define FUNC_NAME s_scm_simple_format |
1092 | { | |
dfd03fb9 | 1093 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1094 | int fReturnString = 0; |
1095 | int writingp; | |
889975e5 | 1096 | size_t start, p, end; |
70d63753 | 1097 | |
bc36d050 | 1098 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1099 | { |
9de87eea | 1100 | destination = port = scm_current_output_port (); |
daba1a71 | 1101 | } |
7888309b | 1102 | else if (scm_is_false (destination)) |
daba1a71 MD |
1103 | { |
1104 | fReturnString = 1; | |
dfd03fb9 MD |
1105 | port = scm_mkstrport (SCM_INUM0, |
1106 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
1107 | SCM_OPN | SCM_WRTNG, | |
1108 | FUNC_NAME); | |
1109 | destination = port; | |
daba1a71 MD |
1110 | } |
1111 | else | |
1112 | { | |
1113 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1114 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1115 | } |
1116 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1117 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1118 | |
889975e5 MG |
1119 | p = 0; |
1120 | start = 0; | |
1121 | end = scm_i_string_length (message); | |
b24b5e13 | 1122 | for (p = start; p != end; ++p) |
889975e5 | 1123 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1124 | { |
b24b5e13 | 1125 | if (++p == end) |
6662998f MV |
1126 | break; |
1127 | ||
889975e5 | 1128 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1129 | { |
1130 | case 'A': case 'a': | |
1131 | writingp = 0; | |
1132 | break; | |
1133 | case 'S': case 's': | |
1134 | writingp = 1; | |
1135 | break; | |
1136 | case '~': | |
889975e5 | 1137 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1138 | start = p + 1; |
1139 | continue; | |
1140 | case '%': | |
889975e5 | 1141 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1142 | scm_newline (port); |
6662998f MV |
1143 | start = p + 1; |
1144 | continue; | |
1145 | default: | |
1afff620 | 1146 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1147 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1148 | |
1149 | } | |
70d63753 | 1150 | |
6662998f | 1151 | |
d2e53ed6 | 1152 | if (!scm_is_pair (args)) |
1afff620 | 1153 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1154 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1155 | |
889975e5 | 1156 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1157 | /* we pass destination here */ |
70d63753 GB |
1158 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1159 | args = SCM_CDR (args); | |
1160 | start = p + 1; | |
1161 | } | |
6662998f | 1162 | |
889975e5 | 1163 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1164 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1165 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1166 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1167 | |
1168 | if (fReturnString) | |
1169 | answer = scm_strport_to_string (destination); | |
1170 | ||
daba1a71 | 1171 | return scm_return_first (answer, message); |
70d63753 GB |
1172 | } |
1173 | #undef FUNC_NAME | |
1174 | ||
1175 | ||
3b3b36dd | 1176 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1177 | (SCM port), |
8f85c0c6 NJ |
1178 | "Send a newline to @var{port}.\n" |
1179 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1180 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1181 | { |
1182 | if (SCM_UNBNDP (port)) | |
9de87eea | 1183 | port = scm_current_output_port (); |
3eb7e6ee | 1184 | |
34d19ef6 | 1185 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1186 | |
0ef4ae82 | 1187 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1188 | return SCM_UNSPECIFIED; |
1189 | } | |
1bbd0b84 | 1190 | #undef FUNC_NAME |
0f2d19dd | 1191 | |
3b3b36dd | 1192 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1193 | (SCM chr, SCM port), |
eca65e90 | 1194 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1195 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1196 | { |
1197 | if (SCM_UNBNDP (port)) | |
9de87eea | 1198 | port = scm_current_output_port (); |
3eb7e6ee | 1199 | |
34d19ef6 HWN |
1200 | SCM_VALIDATE_CHAR (1, chr); |
1201 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
bb35f315 | 1202 | |
7866a09b | 1203 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
23d72566 | 1204 | #if 0 |
0f2d19dd JB |
1205 | #ifdef HAVE_PIPE |
1206 | # ifdef EPIPE | |
1207 | if (EPIPE == errno) | |
1208 | scm_close_port (port); | |
1209 | # endif | |
23d72566 | 1210 | #endif |
0f2d19dd JB |
1211 | #endif |
1212 | return SCM_UNSPECIFIED; | |
1213 | } | |
1bbd0b84 | 1214 | #undef FUNC_NAME |
0f2d19dd | 1215 | |
0f2d19dd JB |
1216 | \f |
1217 | ||
bb35f315 | 1218 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1219 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1220 | * containing PORT and PSTATE. This object can be used as the port for | |
1221 | * display/write etc to continue the current print chain. The REVEALED | |
1222 | * field of PSTATE is set to true to indicate that the print state has | |
1223 | * escaped to Scheme and thus has to be freed by the GC. | |
1224 | */ | |
1225 | ||
92c2555f | 1226 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1227 | |
1228 | /* Print exactly as the port itself would */ | |
1229 | ||
1230 | static int | |
e841c3e0 | 1231 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1232 | { |
1233 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1234 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1235 | } | |
c4f37e80 MV |
1236 | |
1237 | SCM | |
1bbd0b84 | 1238 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1239 | { |
bb35f315 | 1240 | pstate->revealed = 1; |
dfd03fb9 MD |
1241 | return scm_call_2 (proc, exp, |
1242 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1243 | } |
1244 | ||
dfd03fb9 | 1245 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1246 | (SCM port, SCM pstate), |
71331188 | 1247 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1248 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1249 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1250 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1251 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1252 | { |
34d19ef6 | 1253 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1254 | if (!SCM_UNBNDP (pstate)) |
1255 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1256 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1257 | } |
1bbd0b84 | 1258 | #undef FUNC_NAME |
c19bc088 | 1259 | |
a1ec6916 | 1260 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1261 | (SCM port), |
71331188 MG |
1262 | "Return the print state of the port @var{port}. If @var{port}\n" |
1263 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1264 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1265 | { |
368cf54d GB |
1266 | if (SCM_PORT_WITH_PS_P (port)) |
1267 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1268 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1269 | return SCM_BOOL_F; |
276dd677 | 1270 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1271 | } |
1bbd0b84 | 1272 | #undef FUNC_NAME |
bb35f315 | 1273 | |
c4f37e80 | 1274 | \f |
1cc91f1b | 1275 | |
0f2d19dd JB |
1276 | void |
1277 | scm_init_print () | |
0f2d19dd | 1278 | { |
c19bc088 | 1279 | SCM vtable, layout, type; |
d5cf5324 | 1280 | |
62560650 | 1281 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1282 | |
81ae25da MV |
1283 | scm_print_options (scm_list_4 (scm_from_locale_symbol ("highlight-prefix"), |
1284 | scm_from_locale_string ("{"), | |
1285 | scm_from_locale_symbol ("highlight-suffix"), | |
1286 | scm_from_locale_string ("}"))); | |
1287 | ||
d5cf5324 DH |
1288 | scm_gc_register_root (&print_state_pool); |
1289 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1290 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1291 | layout = |
1292 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1293 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
cc95e00a | 1294 | scm_set_struct_vtable_name_x (type, scm_from_locale_symbol ("print-state")); |
bb35f315 | 1295 | scm_print_state_vtable = type; |
c4f37e80 | 1296 | |
c19bc088 MD |
1297 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1298 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1299 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1300 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1301 | |
a0599745 | 1302 | #include "libguile/print.x" |
475fa9a5 MV |
1303 | |
1304 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1305 | } |
89e00824 ML |
1306 | |
1307 | /* | |
1308 | Local Variables: | |
1309 | c-file-style: "gnu" | |
1310 | End: | |
1311 | */ |