Commit | Line | Data |
---|---|---|
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/alist.h" |
40 | #include "libguile/struct.h" | |
41 | #include "libguile/objects.h" | |
42 | #include "libguile/ports.h" | |
43 | #include "libguile/root.h" | |
44 | #include "libguile/strings.h" | |
45 | #include "libguile/strports.h" | |
46 | #include "libguile/vectors.h" | |
c96d76b8 | 47 | #include "libguile/lang.h" |
327967ef | 48 | #include "libguile/numbers.h" |
a0599745 MD |
49 | |
50 | #include "libguile/validate.h" | |
51 | #include "libguile/print.h" | |
22fc179a HWN |
52 | |
53 | #include "libguile/private-options.h" | |
54 | ||
0f2d19dd JB |
55 | \f |
56 | ||
57 | /* {Names of immediate symbols} | |
58 | * | |
59 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
60 | */ | |
61 | ||
e17d318f DH |
62 | /* This table must agree with the list of flags in tags.h. */ |
63 | static const char *iflagnames[] = | |
64 | { | |
65 | "#f", | |
66 | "#t", | |
67 | "#<undefined>", | |
68 | "#<eof>", | |
69 | "()", | |
70 | "#<unspecified>", | |
71 | ||
72 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
73 | "#<unbound>", | |
74 | ||
75 | /* Elisp nil value. This is its Scheme name; whenever it's printed in | |
76 | * Elisp, it should appear as the symbol `nil'. */ | |
77 | "#nil" | |
78 | }; | |
79 | ||
475fa9a5 MV |
80 | SCM_SYMBOL (sym_reader, "reader"); |
81 | ||
92c2555f | 82 | scm_t_option scm_print_opts[] = { |
726d810a DH |
83 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
84 | "Hook for printing closures (should handle macros as well)." }, | |
84f6a34a | 85 | { SCM_OPTION_BOOLEAN, "source", 0, |
81ae25da MV |
86 | "Print closures with source." }, |
87 | { SCM_OPTION_SCM, "highlight-prefix", (unsigned long)SCM_BOOL_F, | |
88 | "The string to print before highlighted values." }, | |
89 | { SCM_OPTION_SCM, "highlight-suffix", (unsigned long)SCM_BOOL_F, | |
475fa9a5 MV |
90 | "The string to print after highlighted values." }, |
91 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (unsigned long)SCM_BOOL_F, | |
92 | "How to print symbols that have a colon as their first or last character. " | |
93 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
94 | "'reader' quotes them when the reader option 'keywords' is not '#f'." | |
62560650 HWN |
95 | }, |
96 | { 0 }, | |
97 | ||
e6e4c9af MD |
98 | }; |
99 | ||
a1ec6916 | 100 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 101 | (SCM setting), |
71331188 | 102 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
103 | "this procedure directly, use the procedures\n" |
104 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
105 | "and @code{print-options}.") | |
1bbd0b84 | 106 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 107 | { |
a51ea417 | 108 | SCM ans = scm_options (setting, |
b7ff98dd | 109 | scm_print_opts, |
1bbd0b84 | 110 | FUNC_NAME); |
e6e4c9af MD |
111 | return ans; |
112 | } | |
1bbd0b84 | 113 | #undef FUNC_NAME |
e6e4c9af | 114 | |
0f2d19dd JB |
115 | \f |
116 | /* {Printing of Scheme Objects} | |
117 | */ | |
118 | ||
a51ea417 | 119 | /* Detection of circular references. |
c62fbfe1 MD |
120 | * |
121 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
122 | * time complexity (O (depth * N)), The printer code can be |
123 | * rewritten to be O(N). | |
a51ea417 | 124 | */ |
dbb5de29 NJ |
125 | #define PUSH_REF(pstate, obj) \ |
126 | do \ | |
127 | { \ | |
128 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
129 | pstate->top++; \ | |
130 | if (pstate->top == pstate->ceiling) \ | |
131 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 132 | } while(0) |
a51ea417 | 133 | |
dbb5de29 NJ |
134 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
135 | do \ | |
136 | { \ | |
137 | register unsigned long i; \ | |
138 | for (i = 0; i < pstate->top; ++i) \ | |
139 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
140 | goto label; \ | |
141 | if (pstate->fancyp) \ | |
142 | { \ | |
143 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
144 | { \ | |
145 | scm_putc ('#', port); \ | |
146 | return; \ | |
147 | } \ | |
148 | } \ | |
149 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 150 | } while(0) |
a51ea417 | 151 | |
dbb5de29 NJ |
152 | #define EXIT_NESTED_DATA(pstate) \ |
153 | do \ | |
154 | { \ | |
155 | --pstate->top; \ | |
156 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
157 | } \ | |
158 | while (0) | |
c62fbfe1 | 159 | |
d5cf5324 DH |
160 | SCM scm_print_state_vtable = SCM_BOOL_F; |
161 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 162 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 163 | |
f843a84c | 164 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 165 | |
3b3b36dd | 166 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 167 | (), |
d5cf5324 | 168 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
169 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
170 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 171 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 172 | { |
d2e53ed6 | 173 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 174 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 175 | else |
0a284a4e | 176 | return SCM_BOOL_F; |
c62fbfe1 | 177 | } |
1bbd0b84 GB |
178 | #undef FUNC_NAME |
179 | ||
c62fbfe1 MD |
180 | #endif |
181 | ||
182 | #define PSTATE_SIZE 50L | |
183 | ||
698c0295 | 184 | static SCM |
1bbd0b84 | 185 | make_print_state (void) |
698c0295 | 186 | { |
d5cf5324 DH |
187 | SCM print_state |
188 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 189 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 190 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 191 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 192 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
193 | return print_state; |
194 | } | |
1cc91f1b | 195 | |
c62fbfe1 MD |
196 | SCM |
197 | scm_make_print_state () | |
c62fbfe1 | 198 | { |
230d095f | 199 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
200 | |
201 | /* First try to allocate a print state from the pool */ | |
9de87eea | 202 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 203 | if (!scm_is_null (print_state_pool)) |
698c0295 | 204 | { |
d5cf5324 DH |
205 | answer = SCM_CAR (print_state_pool); |
206 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 207 | } |
9de87eea | 208 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 209 | |
7888309b | 210 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 211 | } |
a51ea417 | 212 | |
698c0295 | 213 | void |
6e8d25a6 | 214 | scm_free_print_state (SCM print_state) |
698c0295 MD |
215 | { |
216 | SCM handle; | |
217 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
218 | /* Cleanup before returning print state to pool. | |
219 | * It is better to do it here. Doing it in scm_prin1 | |
220 | * would cost more since that function is called much more | |
221 | * often. | |
222 | */ | |
223 | pstate->fancyp = 0; | |
bb35f315 | 224 | pstate->revealed = 0; |
d232520a | 225 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 226 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 227 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 228 | print_state_pool = handle; |
9de87eea | 229 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
230 | } |
231 | ||
232 | SCM | |
233 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
234 | { | |
235 | if (SCM_UNBNDP (print_state)) | |
236 | { | |
237 | if (SCM_PORT_WITH_PS_P (port)) | |
238 | return port; | |
239 | else | |
240 | print_state = scm_make_print_state (); | |
241 | /* port does not need to be coerced since it doesn't have ps */ | |
242 | } | |
243 | else | |
244 | port = SCM_COERCE_OUTPORT (port); | |
245 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
246 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 247 | } |
1cc91f1b | 248 | |
a51ea417 | 249 | static void |
1bbd0b84 | 250 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 251 | { |
4057a3e0 MV |
252 | SCM old_vect = pstate->ref_vect; |
253 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
254 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 255 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
256 | unsigned long int i; |
257 | ||
258 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 259 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
260 | |
261 | pstate->ref_vect = new_vect; | |
bf685b6d | 262 | pstate->ceiling = new_size; |
a51ea417 MD |
263 | } |
264 | ||
509759dd MV |
265 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
266 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 267 | |
a51ea417 | 268 | static void |
34d19ef6 | 269 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 270 | { |
c014a02e ML |
271 | register long i; |
272 | long self = pstate->top - 1; | |
c62fbfe1 | 273 | i = pstate->top - 1; |
509759dd | 274 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
275 | { |
276 | while (i > 0) | |
277 | { | |
509759dd MV |
278 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
279 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
280 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
281 | break; |
282 | --i; | |
283 | } | |
284 | self = i; | |
285 | } | |
286 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 287 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 288 | break; |
b7f3516f | 289 | scm_putc ('#', port); |
c62fbfe1 | 290 | scm_intprint (i - self, 10, port); |
b7f3516f | 291 | scm_putc ('#', port); |
a51ea417 MD |
292 | } |
293 | ||
6662998f MV |
294 | /* Print the name of a symbol. */ |
295 | ||
475fa9a5 | 296 | static int |
e23106d5 | 297 | quote_keywordish_symbol (SCM symbol) |
475fa9a5 MV |
298 | { |
299 | SCM option; | |
300 | ||
e23106d5 MG |
301 | if (scm_i_symbol_ref (symbol, 0) != ':' |
302 | && scm_i_symbol_ref (symbol, scm_i_symbol_length (symbol) - 1) != ':') | |
475fa9a5 MV |
303 | return 0; |
304 | ||
305 | option = SCM_PRINT_KEYWORD_STYLE; | |
306 | if (scm_is_false (option)) | |
307 | return 0; | |
308 | if (scm_is_eq (option, sym_reader)) | |
309 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
310 | return 1; | |
311 | } | |
312 | ||
6662998f | 313 | void |
e23106d5 | 314 | scm_i_print_symbol_name (SCM str, SCM port) |
6662998f | 315 | { |
c6b49e89 MV |
316 | /* This points to the first character that has not yet been written to the |
317 | * port. */ | |
318 | size_t pos = 0; | |
319 | /* This points to the character we're currently looking at. */ | |
6662998f | 320 | size_t end; |
c6b49e89 MV |
321 | /* If the name contains weird characters, we'll escape them with |
322 | * backslashes and set this flag; it indicates that we should surround the | |
323 | * name with "#{" and "}#". */ | |
324 | int weird = 0; | |
325 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
326 | * weird because of other characters, backslahes need to be escaped too. | |
327 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
328 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
329 | * everything starting from mw_pos. |
330 | * We could instead make backslashes always weird. This is not necessary | |
331 | * to ensure that the output is (read)-able, but it would make this code | |
332 | * simpler and faster. */ | |
c6b49e89 | 333 | int maybe_weird = 0; |
6662998f | 334 | size_t mw_pos = 0; |
e23106d5 MG |
335 | size_t len = scm_i_symbol_length (str); |
336 | scm_t_wchar str0 = scm_i_symbol_ref (str, 0); | |
6662998f | 337 | |
e23106d5 MG |
338 | if (len == 0 || str0 == '\'' || str0 == '`' || str0 == ',' |
339 | || quote_keywordish_symbol (str) | |
340 | || (str0 == '.' && len == 1) | |
341 | || scm_is_true (scm_i_string_to_number (scm_symbol_to_string (str), 10))) | |
6662998f MV |
342 | { |
343 | scm_lfwrite ("#{", 2, port); | |
344 | weird = 1; | |
345 | } | |
c6b49e89 | 346 | |
6662998f | 347 | for (end = pos; end < len; ++end) |
e23106d5 | 348 | switch (scm_i_symbol_ref (str, end)) |
6662998f MV |
349 | { |
350 | #ifdef BRACKETS_AS_PARENS | |
351 | case '[': | |
352 | case ']': | |
353 | #endif | |
354 | case '(': | |
355 | case ')': | |
356 | case '"': | |
357 | case ';': | |
c6b49e89 | 358 | case '#': |
6662998f MV |
359 | case SCM_WHITE_SPACES: |
360 | case SCM_LINE_INCREMENTORS: | |
361 | weird_handler: | |
362 | if (maybe_weird) | |
363 | { | |
364 | end = mw_pos; | |
365 | maybe_weird = 0; | |
366 | } | |
367 | if (!weird) | |
368 | { | |
369 | scm_lfwrite ("#{", 2, port); | |
370 | weird = 1; | |
371 | } | |
372 | if (pos < end) | |
e23106d5 | 373 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
374 | { |
375 | char buf[2]; | |
376 | buf[0] = '\\'; | |
e23106d5 | 377 | buf[1] = (char) (unsigned char) scm_i_symbol_ref (str, end); |
6662998f MV |
378 | scm_lfwrite (buf, 2, port); |
379 | } | |
380 | pos = end + 1; | |
381 | break; | |
382 | case '\\': | |
383 | if (weird) | |
384 | goto weird_handler; | |
385 | if (!maybe_weird) | |
386 | { | |
387 | maybe_weird = 1; | |
388 | mw_pos = pos; | |
389 | } | |
390 | break; | |
6662998f MV |
391 | default: |
392 | break; | |
393 | } | |
394 | if (pos < end) | |
e23106d5 | 395 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
396 | if (weird) |
397 | scm_lfwrite ("}#", 2, port); | |
398 | } | |
399 | ||
e23106d5 MG |
400 | void |
401 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
402 | { | |
403 | SCM symbol = scm_from_locale_symboln (str, len); | |
404 | return scm_i_print_symbol_name (symbol, port); | |
405 | } | |
406 | ||
c62fbfe1 | 407 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 408 | */ |
8b840115 MD |
409 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
410 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 411 | |
d232520a MV |
412 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
413 | ||
0f2d19dd | 414 | void |
1bbd0b84 | 415 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
416 | { |
417 | if (pstate->fancyp | |
418 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
419 | { | |
81ae25da | 420 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 421 | iprin1 (exp, port, pstate); |
81ae25da | 422 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
423 | } |
424 | else | |
425 | iprin1 (exp, port, pstate); | |
426 | } | |
427 | ||
428 | static void | |
429 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 430 | { |
54778cd3 | 431 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 432 | { |
e34f941a DH |
433 | case scm_tc3_closure: |
434 | case scm_tc3_tc7_1: | |
435 | case scm_tc3_tc7_2: | |
436 | /* These tc3 tags should never occur in an immediate value. They are | |
437 | * only used in cell types of non-immediates, i. e. the value returned | |
438 | * by SCM_CELL_TYPE (exp) can use these tags. | |
439 | */ | |
440 | scm_ipruk ("immediate", exp, port); | |
441 | break; | |
442 | case scm_tc3_int_1: | |
443 | case scm_tc3_int_2: | |
e11e83f3 | 444 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 445 | break; |
e34f941a | 446 | case scm_tc3_imm24: |
7866a09b | 447 | if (SCM_CHARP (exp)) |
0f2d19dd | 448 | { |
904a78f1 | 449 | scm_t_wchar i = SCM_CHAR (exp); |
77332b21 | 450 | const char *name; |
5ca6dc39 | 451 | |
b7f3516f TT |
452 | if (SCM_WRITINGP (pstate)) |
453 | { | |
454 | scm_puts ("#\\", port); | |
77332b21 MG |
455 | name = scm_i_charname (exp); |
456 | if (name != NULL) | |
457 | scm_puts (name, port); | |
904a78f1 MG |
458 | else if (uc_is_general_category_withtable (i, UC_CATEGORY_MASK_L |
459 | | UC_CATEGORY_MASK_M | |
460 | | UC_CATEGORY_MASK_N | |
461 | | UC_CATEGORY_MASK_P | |
462 | | UC_CATEGORY_MASK_S)) | |
463 | /* Print the character if is graphic character. */ | |
464 | { | |
889975e5 | 465 | scm_t_wchar *wbuf; |
0dcd7e61 | 466 | SCM wstr; |
889975e5 MG |
467 | char *buf; |
468 | size_t len; | |
469 | const char *enc; | |
470 | ||
471 | enc = scm_i_get_port_encoding (port); | |
0dcd7e61 MG |
472 | if (uc_combining_class (i) == UC_CCC_NR) |
473 | { | |
474 | wstr = scm_i_make_wide_string (1, &wbuf); | |
475 | wbuf[0] = i; | |
476 | } | |
477 | else | |
478 | { | |
479 | /* Character is a combining character: print it connected | |
480 | to a dotted circle instead of connecting it to the | |
481 | backslash in '#\' */ | |
482 | wstr = scm_i_make_wide_string (2, &wbuf); | |
483 | wbuf[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
484 | wbuf[1] = i; | |
485 | } | |
930ddd34 | 486 | if (enc == NULL) |
889975e5 | 487 | { |
930ddd34 MG |
488 | if (i <= 0xFF) |
489 | /* Character is graphic and Latin-1. Print it */ | |
490 | scm_lfwrite_str (wstr, port); | |
491 | else | |
492 | /* Character is graphic but unrepresentable in | |
493 | this port's encoding. */ | |
494 | scm_intprint (i, 8, port); | |
889975e5 | 495 | } |
904a78f1 | 496 | else |
889975e5 MG |
497 | { |
498 | buf = u32_conv_to_encoding (enc, | |
499 | iconveh_error, | |
500 | (scm_t_uint32 *) wbuf, | |
501 | 1, | |
502 | NULL, | |
503 | NULL, &len); | |
504 | if (buf != NULL) | |
505 | { | |
506 | /* Character is graphic. Print it. */ | |
507 | scm_lfwrite_str (wstr, port); | |
508 | free (buf); | |
509 | } | |
510 | else | |
511 | /* Character is graphic but unrepresentable in | |
512 | this port's encoding. */ | |
513 | scm_intprint (i, 8, port); | |
514 | } | |
904a78f1 MG |
515 | } |
516 | else | |
f7118e35 MG |
517 | /* Character is a non-graphical character. */ |
518 | scm_intprint (i, 8, port); | |
b7f3516f TT |
519 | } |
520 | else | |
889975e5 | 521 | scm_i_charprint (i, port); |
0f2d19dd | 522 | } |
a51ea417 | 523 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
524 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
525 | { | |
526 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
527 | } | |
7e6e6b37 | 528 | else if (SCM_ISYMP (exp)) |
e17d318f | 529 | { |
7e6e6b37 | 530 | scm_i_print_isym (exp, port); |
e17d318f | 531 | } |
0f2d19dd JB |
532 | else if (SCM_ILOCP (exp)) |
533 | { | |
7e6e6b37 | 534 | scm_i_print_iloc (exp, port); |
0f2d19dd JB |
535 | } |
536 | else | |
e34f941a DH |
537 | { |
538 | /* unknown immediate value */ | |
539 | scm_ipruk ("immediate", exp, port); | |
540 | } | |
0f2d19dd | 541 | break; |
e34f941a | 542 | case scm_tc3_cons: |
0f2d19dd JB |
543 | switch (SCM_TYP7 (exp)) |
544 | { | |
904a077d MV |
545 | case scm_tcs_struct: |
546 | { | |
547 | ENTER_NESTED_DATA (pstate, exp, circref); | |
548 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
549 | { | |
550 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
551 | if (!print) | |
552 | goto print_struct; | |
dfd03fb9 | 553 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 554 | pstate->revealed = 1; |
904a077d MV |
555 | scm_call_generic_2 (print, exp, pwps); |
556 | } | |
557 | else | |
558 | { | |
559 | print_struct: | |
560 | scm_print_struct (exp, port, pstate); | |
561 | } | |
562 | EXIT_NESTED_DATA (pstate); | |
563 | } | |
564 | break; | |
0f2d19dd JB |
565 | case scm_tcs_cons_imcar: |
566 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
567 | ENTER_NESTED_DATA (pstate, exp, circref); |
568 | scm_iprlist ("(", exp, ')', port, pstate); | |
569 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
570 | break; |
571 | circref: | |
c62fbfe1 | 572 | print_circref (port, pstate, exp); |
0f2d19dd JB |
573 | break; |
574 | case scm_tcs_closures: | |
7888309b MV |
575 | if (scm_is_false (scm_procedure_p (SCM_PRINT_CLOSURE)) |
576 | || scm_is_false (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 577 | exp, port, pstate))) |
726d810a DH |
578 | { |
579 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
580 | scm_puts ("#<procedure", port); | |
581 | scm_putc (' ', port); | |
582 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
583 | scm_putc (' ', port); | |
584 | if (SCM_PRINT_SOURCE_P) | |
585 | { | |
586 | SCM env = SCM_ENV (exp); | |
587 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
9fcf3cbb | 588 | SCM src = scm_i_unmemocopy_body (SCM_CODE (exp), xenv); |
726d810a DH |
589 | ENTER_NESTED_DATA (pstate, exp, circref); |
590 | scm_iprin1 (src, port, pstate); | |
591 | EXIT_NESTED_DATA (pstate); | |
592 | } | |
593 | else | |
594 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 595 | scm_putc ('>', port); |
726d810a | 596 | } |
0f2d19dd | 597 | break; |
534c55a9 DH |
598 | case scm_tc7_number: |
599 | switch SCM_TYP16 (exp) { | |
600 | case scm_tc16_big: | |
601 | scm_bigprint (exp, port, pstate); | |
602 | break; | |
603 | case scm_tc16_real: | |
604 | scm_print_real (exp, port, pstate); | |
605 | break; | |
606 | case scm_tc16_complex: | |
607 | scm_print_complex (exp, port, pstate); | |
608 | break; | |
f92e85f7 MV |
609 | case scm_tc16_fraction: |
610 | scm_i_print_fraction (exp, port, pstate); | |
611 | break; | |
534c55a9 DH |
612 | } |
613 | break; | |
9c44cd45 MG |
614 | case scm_tc7_string: |
615 | if (SCM_WRITINGP (pstate)) | |
616 | { | |
617 | size_t i, j, len; | |
618 | static char const hex[] = "0123456789abcdef"; | |
619 | char buf[8]; | |
5ca6dc39 | 620 | |
9c44cd45 MG |
621 | |
622 | scm_putc ('"', port); | |
623 | len = scm_i_string_length (exp); | |
624 | for (i = 0; i < len; ++i) | |
625 | { | |
626 | scm_t_wchar ch = scm_i_string_ref (exp, i); | |
627 | int printed = 0; | |
628 | ||
629 | if (ch == ' ' || ch == '\n') | |
630 | { | |
631 | scm_putc (ch, port); | |
632 | printed = 1; | |
633 | } | |
634 | else if (ch == '"' || ch == '\\') | |
635 | { | |
636 | scm_putc ('\\', port); | |
32be5735 | 637 | scm_i_charprint (ch, port); |
9c44cd45 MG |
638 | printed = 1; |
639 | } | |
640 | else | |
641 | if (uc_is_general_category_withtable | |
642 | (ch, | |
643 | UC_CATEGORY_MASK_L | UC_CATEGORY_MASK_M | | |
644 | UC_CATEGORY_MASK_N | UC_CATEGORY_MASK_P | | |
645 | UC_CATEGORY_MASK_S)) | |
646 | { | |
647 | /* Print the character since it is a graphic | |
648 | character. */ | |
649 | scm_t_wchar *wbuf; | |
650 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
651 | char *buf; | |
652 | size_t len; | |
889975e5 MG |
653 | |
654 | if (scm_i_get_port_encoding (port)) | |
9c44cd45 | 655 | { |
889975e5 MG |
656 | wstr = scm_i_make_wide_string (1, &wbuf); |
657 | wbuf[0] = ch; | |
658 | buf = u32_conv_to_encoding (scm_i_get_port_encoding (port), | |
659 | iconveh_error, | |
660 | (scm_t_uint32 *) wbuf, | |
661 | 1 , | |
662 | NULL, | |
663 | NULL, &len); | |
664 | if (buf != NULL) | |
665 | { | |
666 | /* Character is graphic and representable in | |
667 | this encoding. Print it. */ | |
668 | scm_lfwrite_str (wstr, port); | |
669 | free (buf); | |
670 | printed = 1; | |
671 | } | |
9c44cd45 | 672 | } |
889975e5 MG |
673 | else |
674 | if (ch <= 0xFF) | |
675 | { | |
676 | scm_putc (ch, port); | |
677 | printed = 1; | |
678 | } | |
9c44cd45 MG |
679 | } |
680 | ||
681 | if (!printed) | |
682 | { | |
683 | /* Character is graphic but unrepresentable in | |
684 | this port's encoding or is not graphic. */ | |
685 | if (ch <= 0xFF) | |
686 | { | |
687 | buf[0] = '\\'; | |
688 | buf[1] = 'x'; | |
689 | buf[2] = hex[ch / 16]; | |
690 | buf[3] = hex[ch % 16]; | |
691 | scm_lfwrite (buf, 4, port); | |
692 | } | |
693 | else if (ch <= 0xFFFF) | |
694 | { | |
695 | buf[0] = '\\'; | |
696 | buf[1] = 'u'; | |
697 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
698 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
699 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
700 | buf[5] = hex[(ch & 0xF)]; | |
701 | scm_lfwrite (buf, 6, port); | |
702 | j = i + 1; | |
703 | } | |
704 | else if (ch > 0xFFFF) | |
705 | { | |
706 | buf[0] = '\\'; | |
707 | buf[1] = 'U'; | |
708 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
709 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
710 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
711 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
712 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
713 | buf[7] = hex[(ch & 0xF)]; | |
714 | scm_lfwrite (buf, 8, port); | |
715 | j = i + 1; | |
716 | } | |
717 | } | |
718 | } | |
719 | scm_putc ('"', port); | |
720 | scm_remember_upto_here_1 (exp); | |
721 | } | |
722 | else | |
6234ff20 | 723 | scm_lfwrite_str (exp, port); |
9c44cd45 MG |
724 | scm_remember_upto_here_1 (exp); |
725 | break; | |
28b06554 | 726 | case scm_tc7_symbol: |
cc95e00a | 727 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 728 | { |
e23106d5 | 729 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
730 | scm_remember_upto_here_1 (exp); |
731 | } | |
732 | else | |
733 | { | |
734 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 735 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 736 | scm_putc (' ', port); |
0345e278 | 737 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
738 | scm_putc ('>', port); |
739 | } | |
6662998f | 740 | break; |
e5aca4b5 MV |
741 | case scm_tc7_variable: |
742 | scm_i_variable_print (exp, port, pstate); | |
743 | break; | |
2fb924f6 AW |
744 | case scm_tc7_program: |
745 | scm_i_program_print (exp, port, pstate); | |
746 | break; | |
0f2d19dd | 747 | case scm_tc7_wvect: |
c62fbfe1 | 748 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 749 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 750 | scm_puts ("#wh(", port); |
0f2d19dd | 751 | else |
b7f3516f | 752 | scm_puts ("#w(", port); |
0f2d19dd JB |
753 | goto common_vector_printer; |
754 | ||
807e5a66 LC |
755 | case scm_tc7_bytevector: |
756 | scm_i_print_bytevector (exp, port, pstate); | |
757 | break; | |
0f2d19dd | 758 | case scm_tc7_vector: |
c62fbfe1 | 759 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 760 | scm_puts ("#(", port); |
0f2d19dd | 761 | common_vector_printer: |
9fbaf27c | 762 | { |
c014a02e | 763 | register long i; |
4057a3e0 | 764 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 765 | int cutp = 0; |
4057a3e0 MV |
766 | if (pstate->fancyp |
767 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
768 | { |
769 | last = pstate->length - 1; | |
770 | cutp = 1; | |
771 | } | |
c367c4b4 | 772 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 773 | { |
c367c4b4 LC |
774 | /* Elements of weak vectors may not be accessed via the |
775 | `SIMPLE_VECTOR_REF ()' macro. */ | |
776 | for (i = 0; i < last; ++i) | |
777 | { | |
778 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
779 | port, pstate); | |
780 | scm_putc (' ', port); | |
781 | } | |
9fbaf27c | 782 | } |
c367c4b4 LC |
783 | else |
784 | { | |
785 | for (i = 0; i < last; ++i) | |
786 | { | |
787 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
788 | scm_putc (' ', port); | |
789 | } | |
790 | } | |
791 | ||
9fbaf27c MD |
792 | if (i == last) |
793 | { | |
794 | /* CHECK_INTS; */ | |
c367c4b4 | 795 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
796 | } |
797 | if (cutp) | |
b7f3516f TT |
798 | scm_puts (" ...", port); |
799 | scm_putc (')', port); | |
9fbaf27c | 800 | } |
c62fbfe1 | 801 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 802 | break; |
0f2d19dd | 803 | case scm_tcs_subrs: |
e23106d5 MG |
804 | { |
805 | SCM name = scm_symbol_to_string (SCM_SUBR_NAME (exp)); | |
806 | scm_puts (SCM_SUBR_GENERIC (exp) | |
807 | ? "#<primitive-generic " | |
808 | : "#<primitive-procedure ", | |
809 | port); | |
810 | scm_lfwrite_str (name, port); | |
811 | scm_putc ('>', port); | |
812 | break; | |
813 | } | |
c180dfd3 MD |
814 | case scm_tc7_pws: |
815 | scm_puts ("#<procedure-with-setter", port); | |
816 | { | |
817 | SCM name = scm_procedure_name (exp); | |
7888309b | 818 | if (scm_is_true (name)) |
c180dfd3 MD |
819 | { |
820 | scm_putc (' ', port); | |
b24b5e13 | 821 | scm_display (name, port); |
c180dfd3 MD |
822 | } |
823 | } | |
824 | scm_putc ('>', port); | |
825 | break; | |
0f2d19dd | 826 | case scm_tc7_port: |
5ca6dc39 JB |
827 | { |
828 | register long i = SCM_PTOBNUM (exp); | |
829 | if (i < scm_numptob | |
830 | && scm_ptobs[i].print | |
831 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 832 | break; |
5ca6dc39 JB |
833 | goto punk; |
834 | } | |
835 | case scm_tc7_smob: | |
7a7f7c53 DH |
836 | ENTER_NESTED_DATA (pstate, exp, circref); |
837 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
838 | EXIT_NESTED_DATA (pstate); | |
839 | break; | |
0f2d19dd | 840 | default: |
a51ea417 MD |
841 | punk: |
842 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
843 | } |
844 | } | |
845 | } | |
846 | ||
c62fbfe1 MD |
847 | /* Print states are necessary for circular reference safe printing. |
848 | * They are also expensive to allocate. Therefore print states are | |
849 | * kept in a pool so that they can be reused. | |
850 | */ | |
1cc91f1b | 851 | |
bb35f315 MV |
852 | /* The PORT argument can also be a print-state/port pair, which will |
853 | * then be used instead of allocating a new print state. This is | |
854 | * useful for continuing a chain of print calls from Scheme. */ | |
855 | ||
a51ea417 | 856 | void |
1bbd0b84 | 857 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 858 | { |
c4f37e80 MV |
859 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
860 | SCM pstate_scm; | |
c62fbfe1 | 861 | scm_print_state *pstate; |
15635be5 | 862 | int old_writingp; |
c62fbfe1 | 863 | |
bb35f315 MV |
864 | /* If PORT is a print-state/port pair, use that. Else create a new |
865 | print-state. */ | |
c4f37e80 | 866 | |
0c95b57d | 867 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 868 | { |
52235e71 MD |
869 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
870 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
871 | } |
872 | else | |
c62fbfe1 | 873 | { |
c4f37e80 | 874 | /* First try to allocate a print state from the pool */ |
9de87eea | 875 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 876 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 877 | { |
d5cf5324 DH |
878 | handle = print_state_pool; |
879 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 880 | } |
9de87eea | 881 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 882 | if (scm_is_false (handle)) |
d5cf5324 | 883 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 884 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 885 | } |
c62fbfe1 | 886 | |
c4f37e80 | 887 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 888 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
889 | pstate->writingp = writingp; |
890 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 891 | pstate->writingp = old_writingp; |
c62fbfe1 | 892 | |
bb35f315 MV |
893 | /* Return print state to pool if it has been created above and |
894 | hasn't escaped to Scheme. */ | |
895 | ||
7888309b | 896 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 897 | { |
9de87eea | 898 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
899 | SCM_SETCDR (handle, print_state_pool); |
900 | print_state_pool = handle; | |
9de87eea | 901 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 902 | } |
a51ea417 MD |
903 | } |
904 | ||
9c44cd45 MG |
905 | /* Print a character. |
906 | */ | |
907 | void | |
889975e5 | 908 | scm_i_charprint (scm_t_wchar ch, SCM port) |
9c44cd45 MG |
909 | { |
910 | scm_t_wchar *wbuf; | |
911 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
912 | ||
913 | wbuf[0] = ch; | |
914 | scm_lfwrite_str (wstr, port); | |
915 | } | |
0f2d19dd JB |
916 | |
917 | /* Print an integer. | |
918 | */ | |
1cc91f1b | 919 | |
0f2d19dd | 920 | void |
a406c9e9 | 921 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
922 | { |
923 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 924 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
925 | } |
926 | ||
a406c9e9 MV |
927 | void |
928 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
929 | { | |
930 | char num_buf[SCM_INTBUFLEN]; | |
931 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
932 | } | |
933 | ||
0f2d19dd JB |
934 | /* Print an object of unrecognized type. |
935 | */ | |
1cc91f1b | 936 | |
0f2d19dd | 937 | void |
1bbd0b84 | 938 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 939 | { |
b7f3516f TT |
940 | scm_puts ("#<unknown-", port); |
941 | scm_puts (hdr, port); | |
26224b3f | 942 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 943 | { |
b7f3516f | 944 | scm_puts (" (0x", port); |
0345e278 | 945 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 946 | scm_puts (" . 0x", port); |
0345e278 | 947 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 948 | scm_puts (") @", port); |
0f2d19dd | 949 | } |
b7f3516f | 950 | scm_puts (" 0x", port); |
0345e278 | 951 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 952 | scm_putc ('>', port); |
0f2d19dd JB |
953 | } |
954 | ||
1cc91f1b | 955 | |
904a077d | 956 | /* Print a list. |
22a52da1 | 957 | */ |
0f2d19dd | 958 | void |
34d19ef6 | 959 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 960 | { |
c62fbfe1 | 961 | register SCM hare, tortoise; |
c014a02e | 962 | long floor = pstate->top - 2; |
b7f3516f | 963 | scm_puts (hdr, port); |
0f2d19dd | 964 | /* CHECK_INTS; */ |
c62fbfe1 MD |
965 | if (pstate->fancyp) |
966 | goto fancy_printing; | |
967 | ||
968 | /* Run a hare and tortoise so that total time complexity will be | |
969 | O(depth * N) instead of O(N^2). */ | |
970 | hare = SCM_CDR (exp); | |
971 | tortoise = exp; | |
d2e53ed6 | 972 | while (scm_is_pair (hare)) |
c62fbfe1 | 973 | { |
bc36d050 | 974 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
975 | goto fancy_printing; |
976 | hare = SCM_CDR (hare); | |
d2e53ed6 | 977 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
978 | break; |
979 | hare = SCM_CDR (hare); | |
980 | tortoise = SCM_CDR (tortoise); | |
981 | } | |
982 | ||
983 | /* No cdr cycles intrinsic to this list */ | |
984 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 985 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 986 | { |
c014a02e | 987 | register long i; |
5ca6dc39 | 988 | |
c62fbfe1 | 989 | for (i = floor; i >= 0; --i) |
509759dd | 990 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
991 | goto circref; |
992 | PUSH_REF (pstate, exp); | |
b7f3516f | 993 | scm_putc (' ', port); |
0f2d19dd | 994 | /* CHECK_INTS; */ |
c62fbfe1 | 995 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 996 | } |
c96d76b8 | 997 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 998 | { |
b7f3516f | 999 | scm_puts (" . ", port); |
c62fbfe1 | 1000 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1001 | } |
c62fbfe1 | 1002 | |
a51ea417 | 1003 | end: |
b7f3516f | 1004 | scm_putc (tlr, port); |
c62fbfe1 | 1005 | pstate->top = floor + 2; |
a51ea417 | 1006 | return; |
c62fbfe1 MD |
1007 | |
1008 | fancy_printing: | |
1009 | { | |
c014a02e | 1010 | long n = pstate->length; |
c62fbfe1 MD |
1011 | |
1012 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1013 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1014 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1015 | { |
c014a02e | 1016 | register unsigned long i; |
5ca6dc39 | 1017 | |
c62fbfe1 | 1018 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1019 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1020 | goto fancy_circref; |
1021 | if (pstate->fancyp) | |
1022 | { | |
1023 | if (n == 0) | |
1024 | { | |
b7f3516f | 1025 | scm_puts (" ...", port); |
c62fbfe1 MD |
1026 | goto skip_tail; |
1027 | } | |
1028 | else | |
1029 | --n; | |
1030 | } | |
1031 | PUSH_REF(pstate, exp); | |
1032 | ++pstate->list_offset; | |
b7f3516f | 1033 | scm_putc (' ', port); |
c62fbfe1 MD |
1034 | /* CHECK_INTS; */ |
1035 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1036 | } | |
1037 | } | |
c96d76b8 | 1038 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1039 | { |
b7f3516f | 1040 | scm_puts (" . ", port); |
c62fbfe1 MD |
1041 | scm_iprin1 (exp, port, pstate); |
1042 | } | |
1043 | skip_tail: | |
1044 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1045 | goto end; |
a51ea417 | 1046 | |
c62fbfe1 MD |
1047 | fancy_circref: |
1048 | pstate->list_offset -= pstate->top - floor - 2; | |
1049 | ||
1050 | circref: | |
b7f3516f | 1051 | scm_puts (" . ", port); |
c62fbfe1 MD |
1052 | print_circref (port, pstate, exp); |
1053 | goto end; | |
0f2d19dd JB |
1054 | } |
1055 | ||
1056 | \f | |
1057 | ||
bb35f315 MV |
1058 | int |
1059 | scm_valid_oport_value_p (SCM val) | |
1060 | { | |
368cf54d GB |
1061 | return (SCM_OPOUTPORTP (val) |
1062 | || (SCM_PORT_WITH_PS_P (val) | |
1063 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1064 | } |
1065 | ||
8b840115 | 1066 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1067 | |
0f2d19dd | 1068 | SCM |
1bbd0b84 | 1069 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1070 | { |
1071 | if (SCM_UNBNDP (port)) | |
9de87eea | 1072 | port = scm_current_output_port (); |
3eb7e6ee JB |
1073 | |
1074 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1075 | |
a51ea417 | 1076 | scm_prin1 (obj, port, 1); |
23d72566 | 1077 | #if 0 |
0f2d19dd JB |
1078 | #ifdef HAVE_PIPE |
1079 | # ifdef EPIPE | |
1080 | if (EPIPE == errno) | |
1081 | scm_close_port (port); | |
1082 | # endif | |
23d72566 | 1083 | #endif |
0f2d19dd JB |
1084 | #endif |
1085 | return SCM_UNSPECIFIED; | |
1086 | } | |
1087 | ||
1088 | ||
8b840115 | 1089 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1090 | |
0f2d19dd | 1091 | SCM |
1bbd0b84 | 1092 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1093 | { |
1094 | if (SCM_UNBNDP (port)) | |
9de87eea | 1095 | port = scm_current_output_port (); |
3eb7e6ee JB |
1096 | |
1097 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1098 | |
a51ea417 | 1099 | scm_prin1 (obj, port, 0); |
23d72566 | 1100 | #if 0 |
0f2d19dd JB |
1101 | #ifdef HAVE_PIPE |
1102 | # ifdef EPIPE | |
1103 | if (EPIPE == errno) | |
1104 | scm_close_port (port); | |
1105 | # endif | |
23d72566 | 1106 | #endif |
0f2d19dd JB |
1107 | #endif |
1108 | return SCM_UNSPECIFIED; | |
1109 | } | |
1110 | ||
70d63753 GB |
1111 | |
1112 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1113 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1114 | "Write @var{message} to @var{destination}, defaulting to\n" |
1115 | "the current output port.\n" | |
1116 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1117 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1118 | "the escapes are replaced with corresponding members of\n" | |
1119 | "@var{ARGS}:\n" | |
1120 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1121 | "using @code{write}.\n" | |
1122 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1123 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1124 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1125 | #define FUNC_NAME s_scm_simple_format |
1126 | { | |
dfd03fb9 | 1127 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1128 | int fReturnString = 0; |
1129 | int writingp; | |
889975e5 | 1130 | size_t start, p, end; |
70d63753 | 1131 | |
bc36d050 | 1132 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1133 | { |
9de87eea | 1134 | destination = port = scm_current_output_port (); |
daba1a71 | 1135 | } |
7888309b | 1136 | else if (scm_is_false (destination)) |
daba1a71 MD |
1137 | { |
1138 | fReturnString = 1; | |
dfd03fb9 MD |
1139 | port = scm_mkstrport (SCM_INUM0, |
1140 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
1141 | SCM_OPN | SCM_WRTNG, | |
1142 | FUNC_NAME); | |
1143 | destination = port; | |
daba1a71 MD |
1144 | } |
1145 | else | |
1146 | { | |
1147 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1148 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1149 | } |
1150 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1151 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1152 | |
889975e5 MG |
1153 | p = 0; |
1154 | start = 0; | |
1155 | end = scm_i_string_length (message); | |
b24b5e13 | 1156 | for (p = start; p != end; ++p) |
889975e5 | 1157 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1158 | { |
b24b5e13 | 1159 | if (++p == end) |
6662998f MV |
1160 | break; |
1161 | ||
889975e5 | 1162 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1163 | { |
1164 | case 'A': case 'a': | |
1165 | writingp = 0; | |
1166 | break; | |
1167 | case 'S': case 's': | |
1168 | writingp = 1; | |
1169 | break; | |
1170 | case '~': | |
889975e5 | 1171 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1172 | start = p + 1; |
1173 | continue; | |
1174 | case '%': | |
889975e5 | 1175 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1176 | scm_newline (port); |
6662998f MV |
1177 | start = p + 1; |
1178 | continue; | |
1179 | default: | |
1afff620 | 1180 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1181 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1182 | |
1183 | } | |
70d63753 | 1184 | |
6662998f | 1185 | |
d2e53ed6 | 1186 | if (!scm_is_pair (args)) |
1afff620 | 1187 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1188 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1189 | |
889975e5 | 1190 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1191 | /* we pass destination here */ |
70d63753 GB |
1192 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1193 | args = SCM_CDR (args); | |
1194 | start = p + 1; | |
1195 | } | |
6662998f | 1196 | |
889975e5 | 1197 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1198 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1199 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1200 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1201 | |
1202 | if (fReturnString) | |
1203 | answer = scm_strport_to_string (destination); | |
1204 | ||
daba1a71 | 1205 | return scm_return_first (answer, message); |
70d63753 GB |
1206 | } |
1207 | #undef FUNC_NAME | |
1208 | ||
1209 | ||
3b3b36dd | 1210 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1211 | (SCM port), |
8f85c0c6 NJ |
1212 | "Send a newline to @var{port}.\n" |
1213 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1214 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1215 | { |
1216 | if (SCM_UNBNDP (port)) | |
9de87eea | 1217 | port = scm_current_output_port (); |
3eb7e6ee | 1218 | |
34d19ef6 | 1219 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1220 | |
0ef4ae82 | 1221 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1222 | return SCM_UNSPECIFIED; |
1223 | } | |
1bbd0b84 | 1224 | #undef FUNC_NAME |
0f2d19dd | 1225 | |
3b3b36dd | 1226 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1227 | (SCM chr, SCM port), |
eca65e90 | 1228 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1229 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1230 | { |
1231 | if (SCM_UNBNDP (port)) | |
9de87eea | 1232 | port = scm_current_output_port (); |
3eb7e6ee | 1233 | |
34d19ef6 HWN |
1234 | SCM_VALIDATE_CHAR (1, chr); |
1235 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
3d03f939 MG |
1236 | |
1237 | scm_i_charprint (SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); | |
23d72566 | 1238 | #if 0 |
0f2d19dd JB |
1239 | #ifdef HAVE_PIPE |
1240 | # ifdef EPIPE | |
1241 | if (EPIPE == errno) | |
1242 | scm_close_port (port); | |
1243 | # endif | |
23d72566 | 1244 | #endif |
0f2d19dd JB |
1245 | #endif |
1246 | return SCM_UNSPECIFIED; | |
1247 | } | |
1bbd0b84 | 1248 | #undef FUNC_NAME |
0f2d19dd | 1249 | |
0f2d19dd JB |
1250 | \f |
1251 | ||
bb35f315 | 1252 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1253 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1254 | * containing PORT and PSTATE. This object can be used as the port for | |
1255 | * display/write etc to continue the current print chain. The REVEALED | |
1256 | * field of PSTATE is set to true to indicate that the print state has | |
1257 | * escaped to Scheme and thus has to be freed by the GC. | |
1258 | */ | |
1259 | ||
92c2555f | 1260 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1261 | |
1262 | /* Print exactly as the port itself would */ | |
1263 | ||
1264 | static int | |
e841c3e0 | 1265 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1266 | { |
1267 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1268 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1269 | } | |
c4f37e80 MV |
1270 | |
1271 | SCM | |
1bbd0b84 | 1272 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1273 | { |
bb35f315 | 1274 | pstate->revealed = 1; |
dfd03fb9 MD |
1275 | return scm_call_2 (proc, exp, |
1276 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1277 | } |
1278 | ||
dfd03fb9 | 1279 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1280 | (SCM port, SCM pstate), |
71331188 | 1281 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1282 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1283 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1284 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1285 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1286 | { |
34d19ef6 | 1287 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1288 | if (!SCM_UNBNDP (pstate)) |
1289 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1290 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1291 | } |
1bbd0b84 | 1292 | #undef FUNC_NAME |
c19bc088 | 1293 | |
a1ec6916 | 1294 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1295 | (SCM port), |
71331188 MG |
1296 | "Return the print state of the port @var{port}. If @var{port}\n" |
1297 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1298 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1299 | { |
368cf54d GB |
1300 | if (SCM_PORT_WITH_PS_P (port)) |
1301 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1302 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1303 | return SCM_BOOL_F; |
276dd677 | 1304 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1305 | } |
1bbd0b84 | 1306 | #undef FUNC_NAME |
bb35f315 | 1307 | |
c4f37e80 | 1308 | \f |
1cc91f1b | 1309 | |
0f2d19dd JB |
1310 | void |
1311 | scm_init_print () | |
0f2d19dd | 1312 | { |
c19bc088 | 1313 | SCM vtable, layout, type; |
d5cf5324 | 1314 | |
62560650 | 1315 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1316 | |
81ae25da MV |
1317 | scm_print_options (scm_list_4 (scm_from_locale_symbol ("highlight-prefix"), |
1318 | scm_from_locale_string ("{"), | |
1319 | scm_from_locale_symbol ("highlight-suffix"), | |
1320 | scm_from_locale_string ("}"))); | |
1321 | ||
d5cf5324 DH |
1322 | scm_gc_register_root (&print_state_pool); |
1323 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1324 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1325 | layout = |
1326 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1327 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
cc95e00a | 1328 | scm_set_struct_vtable_name_x (type, scm_from_locale_symbol ("print-state")); |
bb35f315 | 1329 | scm_print_state_vtable = type; |
c4f37e80 | 1330 | |
c19bc088 MD |
1331 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1332 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1333 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1334 | |
a0599745 | 1335 | #include "libguile/print.x" |
475fa9a5 MV |
1336 | |
1337 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1338 | } |
89e00824 ML |
1339 | |
1340 | /* | |
1341 | Local Variables: | |
1342 | c-file-style: "gnu" | |
1343 | End: | |
1344 | */ |