Commit | Line | Data |
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e2c2a699 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009, 2010 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" | |
a0599745 MD |
41 | #include "libguile/ports.h" |
42 | #include "libguile/root.h" | |
43 | #include "libguile/strings.h" | |
44 | #include "libguile/strports.h" | |
45 | #include "libguile/vectors.h" | |
c96d76b8 | 46 | #include "libguile/lang.h" |
327967ef | 47 | #include "libguile/numbers.h" |
6f3b0cc2 | 48 | #include "libguile/vm.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", | |
45f4cbdf MW |
66 | "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */ |
67 | "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", | |
68 | "()", | |
e17d318f | 69 | "#t", |
45f4cbdf MW |
70 | "#<XXX UNUSED BOOLEAN -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>", |
71 | "#<unspecified>", | |
e17d318f DH |
72 | "#<undefined>", |
73 | "#<eof>", | |
e17d318f DH |
74 | |
75 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
76 | "#<unbound>", | |
e17d318f DH |
77 | }; |
78 | ||
475fa9a5 MV |
79 | SCM_SYMBOL (sym_reader, "reader"); |
80 | ||
92c2555f | 81 | scm_t_option scm_print_opts[] = { |
62316c7f | 82 | { SCM_OPTION_SCM, "closure-hook", (unsigned long) SCM_BOOL_F, |
726d810a | 83 | "Hook for printing closures (should handle macros as well)." }, |
84f6a34a | 84 | { SCM_OPTION_BOOLEAN, "source", 0, |
81ae25da MV |
85 | "Print closures with source." }, |
86 | { SCM_OPTION_SCM, "highlight-prefix", (unsigned long)SCM_BOOL_F, | |
87 | "The string to print before highlighted values." }, | |
88 | { SCM_OPTION_SCM, "highlight-suffix", (unsigned long)SCM_BOOL_F, | |
475fa9a5 MV |
89 | "The string to print after highlighted values." }, |
90 | { SCM_OPTION_SCM, "quote-keywordish-symbols", (unsigned long)SCM_BOOL_F, | |
91 | "How to print symbols that have a colon as their first or last character. " | |
92 | "The value '#f' does not quote the colons; '#t' quotes them; " | |
93 | "'reader' quotes them when the reader option 'keywords' is not '#f'." | |
62560650 HWN |
94 | }, |
95 | { 0 }, | |
e6e4c9af MD |
96 | }; |
97 | ||
a1ec6916 | 98 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 99 | (SCM setting), |
71331188 | 100 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
101 | "this procedure directly, use the procedures\n" |
102 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
103 | "and @code{print-options}.") | |
1bbd0b84 | 104 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 105 | { |
a51ea417 | 106 | SCM ans = scm_options (setting, |
b7ff98dd | 107 | scm_print_opts, |
1bbd0b84 | 108 | FUNC_NAME); |
e6e4c9af MD |
109 | return ans; |
110 | } | |
1bbd0b84 | 111 | #undef FUNC_NAME |
e6e4c9af | 112 | |
0f2d19dd JB |
113 | \f |
114 | /* {Printing of Scheme Objects} | |
115 | */ | |
116 | ||
a51ea417 | 117 | /* Detection of circular references. |
c62fbfe1 MD |
118 | * |
119 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
120 | * time complexity (O (depth * N)), The printer code can be |
121 | * rewritten to be O(N). | |
a51ea417 | 122 | */ |
dbb5de29 NJ |
123 | #define PUSH_REF(pstate, obj) \ |
124 | do \ | |
125 | { \ | |
126 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
127 | pstate->top++; \ | |
128 | if (pstate->top == pstate->ceiling) \ | |
129 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 130 | } while(0) |
a51ea417 | 131 | |
dbb5de29 NJ |
132 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
133 | do \ | |
134 | { \ | |
135 | register unsigned long i; \ | |
136 | for (i = 0; i < pstate->top; ++i) \ | |
137 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
138 | goto label; \ | |
139 | if (pstate->fancyp) \ | |
140 | { \ | |
141 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
142 | { \ | |
143 | scm_putc ('#', port); \ | |
144 | return; \ | |
145 | } \ | |
146 | } \ | |
147 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 148 | } while(0) |
a51ea417 | 149 | |
dbb5de29 NJ |
150 | #define EXIT_NESTED_DATA(pstate) \ |
151 | do \ | |
152 | { \ | |
153 | --pstate->top; \ | |
154 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
155 | } \ | |
156 | while (0) | |
c62fbfe1 | 157 | |
d5cf5324 DH |
158 | SCM scm_print_state_vtable = SCM_BOOL_F; |
159 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 160 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 161 | |
f843a84c | 162 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 163 | |
3b3b36dd | 164 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 165 | (), |
d5cf5324 | 166 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
167 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
168 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 169 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 170 | { |
d2e53ed6 | 171 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 172 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 173 | else |
0a284a4e | 174 | return SCM_BOOL_F; |
c62fbfe1 | 175 | } |
1bbd0b84 GB |
176 | #undef FUNC_NAME |
177 | ||
c62fbfe1 MD |
178 | #endif |
179 | ||
180 | #define PSTATE_SIZE 50L | |
181 | ||
698c0295 | 182 | static SCM |
1bbd0b84 | 183 | make_print_state (void) |
698c0295 | 184 | { |
d5cf5324 DH |
185 | SCM print_state |
186 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 187 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 188 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 189 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 190 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
191 | return print_state; |
192 | } | |
1cc91f1b | 193 | |
c62fbfe1 MD |
194 | SCM |
195 | scm_make_print_state () | |
c62fbfe1 | 196 | { |
230d095f | 197 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
198 | |
199 | /* First try to allocate a print state from the pool */ | |
9de87eea | 200 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 201 | if (!scm_is_null (print_state_pool)) |
698c0295 | 202 | { |
d5cf5324 DH |
203 | answer = SCM_CAR (print_state_pool); |
204 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 205 | } |
9de87eea | 206 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 207 | |
7888309b | 208 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 209 | } |
a51ea417 | 210 | |
698c0295 | 211 | void |
6e8d25a6 | 212 | scm_free_print_state (SCM print_state) |
698c0295 MD |
213 | { |
214 | SCM handle; | |
215 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
216 | /* Cleanup before returning print state to pool. | |
217 | * It is better to do it here. Doing it in scm_prin1 | |
218 | * would cost more since that function is called much more | |
219 | * often. | |
220 | */ | |
221 | pstate->fancyp = 0; | |
bb35f315 | 222 | pstate->revealed = 0; |
d232520a | 223 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 224 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 225 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 226 | print_state_pool = handle; |
9de87eea | 227 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
228 | } |
229 | ||
230 | SCM | |
231 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
232 | { | |
233 | if (SCM_UNBNDP (print_state)) | |
234 | { | |
235 | if (SCM_PORT_WITH_PS_P (port)) | |
236 | return port; | |
237 | else | |
238 | print_state = scm_make_print_state (); | |
239 | /* port does not need to be coerced since it doesn't have ps */ | |
240 | } | |
241 | else | |
242 | port = SCM_COERCE_OUTPORT (port); | |
243 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
244 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 245 | } |
1cc91f1b | 246 | |
a51ea417 | 247 | static void |
1bbd0b84 | 248 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 249 | { |
4057a3e0 MV |
250 | SCM old_vect = pstate->ref_vect; |
251 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
252 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 253 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
254 | unsigned long int i; |
255 | ||
256 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 257 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
258 | |
259 | pstate->ref_vect = new_vect; | |
bf685b6d | 260 | pstate->ceiling = new_size; |
a51ea417 MD |
261 | } |
262 | ||
509759dd MV |
263 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
264 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 265 | |
a51ea417 | 266 | static void |
34d19ef6 | 267 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 268 | { |
c014a02e ML |
269 | register long i; |
270 | long self = pstate->top - 1; | |
c62fbfe1 | 271 | i = pstate->top - 1; |
509759dd | 272 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
273 | { |
274 | while (i > 0) | |
275 | { | |
509759dd MV |
276 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
277 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
278 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
279 | break; |
280 | --i; | |
281 | } | |
282 | self = i; | |
283 | } | |
284 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 285 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 286 | break; |
b7f3516f | 287 | scm_putc ('#', port); |
c62fbfe1 | 288 | scm_intprint (i - self, 10, port); |
b7f3516f | 289 | scm_putc ('#', port); |
a51ea417 MD |
290 | } |
291 | ||
6662998f MV |
292 | /* Print the name of a symbol. */ |
293 | ||
475fa9a5 | 294 | static int |
e23106d5 | 295 | quote_keywordish_symbol (SCM symbol) |
475fa9a5 MV |
296 | { |
297 | SCM option; | |
298 | ||
e23106d5 MG |
299 | if (scm_i_symbol_ref (symbol, 0) != ':' |
300 | && scm_i_symbol_ref (symbol, scm_i_symbol_length (symbol) - 1) != ':') | |
475fa9a5 MV |
301 | return 0; |
302 | ||
303 | option = SCM_PRINT_KEYWORD_STYLE; | |
304 | if (scm_is_false (option)) | |
305 | return 0; | |
306 | if (scm_is_eq (option, sym_reader)) | |
307 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); | |
308 | return 1; | |
309 | } | |
310 | ||
6662998f | 311 | void |
e23106d5 | 312 | scm_i_print_symbol_name (SCM str, SCM port) |
6662998f | 313 | { |
c6b49e89 MV |
314 | /* This points to the first character that has not yet been written to the |
315 | * port. */ | |
316 | size_t pos = 0; | |
317 | /* This points to the character we're currently looking at. */ | |
6662998f | 318 | size_t end; |
c6b49e89 MV |
319 | /* If the name contains weird characters, we'll escape them with |
320 | * backslashes and set this flag; it indicates that we should surround the | |
321 | * name with "#{" and "}#". */ | |
322 | int weird = 0; | |
323 | /* Backslashes are not sufficient to make a name weird, but if a name is | |
324 | * weird because of other characters, backslahes need to be escaped too. | |
325 | * The first time we see a backslash, we set maybe_weird, and mw_pos points | |
326 | * to the backslash. Then if the name turns out to be weird, we re-process | |
327967ef MV |
327 | * everything starting from mw_pos. |
328 | * We could instead make backslashes always weird. This is not necessary | |
329 | * to ensure that the output is (read)-able, but it would make this code | |
330 | * simpler and faster. */ | |
c6b49e89 | 331 | int maybe_weird = 0; |
6662998f | 332 | size_t mw_pos = 0; |
e23106d5 MG |
333 | size_t len = scm_i_symbol_length (str); |
334 | scm_t_wchar str0 = scm_i_symbol_ref (str, 0); | |
6662998f | 335 | |
e23106d5 MG |
336 | if (len == 0 || str0 == '\'' || str0 == '`' || str0 == ',' |
337 | || quote_keywordish_symbol (str) | |
338 | || (str0 == '.' && len == 1) | |
339 | || scm_is_true (scm_i_string_to_number (scm_symbol_to_string (str), 10))) | |
6662998f MV |
340 | { |
341 | scm_lfwrite ("#{", 2, port); | |
342 | weird = 1; | |
343 | } | |
c6b49e89 | 344 | |
6662998f | 345 | for (end = pos; end < len; ++end) |
e23106d5 | 346 | switch (scm_i_symbol_ref (str, end)) |
6662998f MV |
347 | { |
348 | #ifdef BRACKETS_AS_PARENS | |
349 | case '[': | |
350 | case ']': | |
351 | #endif | |
352 | case '(': | |
353 | case ')': | |
354 | case '"': | |
355 | case ';': | |
c6b49e89 | 356 | case '#': |
6662998f MV |
357 | case SCM_WHITE_SPACES: |
358 | case SCM_LINE_INCREMENTORS: | |
359 | weird_handler: | |
360 | if (maybe_weird) | |
361 | { | |
362 | end = mw_pos; | |
363 | maybe_weird = 0; | |
364 | } | |
365 | if (!weird) | |
366 | { | |
367 | scm_lfwrite ("#{", 2, port); | |
368 | weird = 1; | |
369 | } | |
370 | if (pos < end) | |
e23106d5 | 371 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
372 | { |
373 | char buf[2]; | |
374 | buf[0] = '\\'; | |
e23106d5 | 375 | buf[1] = (char) (unsigned char) scm_i_symbol_ref (str, end); |
6662998f MV |
376 | scm_lfwrite (buf, 2, port); |
377 | } | |
378 | pos = end + 1; | |
379 | break; | |
380 | case '\\': | |
381 | if (weird) | |
382 | goto weird_handler; | |
383 | if (!maybe_weird) | |
384 | { | |
385 | maybe_weird = 1; | |
386 | mw_pos = pos; | |
387 | } | |
388 | break; | |
6662998f MV |
389 | default: |
390 | break; | |
391 | } | |
392 | if (pos < end) | |
e23106d5 | 393 | scm_lfwrite_substr (scm_symbol_to_string (str), pos, end, port); |
6662998f MV |
394 | if (weird) |
395 | scm_lfwrite ("}#", 2, port); | |
396 | } | |
397 | ||
e23106d5 MG |
398 | void |
399 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
400 | { | |
401 | SCM symbol = scm_from_locale_symboln (str, len); | |
ab33782c | 402 | scm_i_print_symbol_name (symbol, port); |
e23106d5 MG |
403 | } |
404 | ||
c62fbfe1 | 405 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 406 | */ |
8b840115 MD |
407 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
408 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 409 | |
d232520a MV |
410 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
411 | ||
dea901d6 MG |
412 | |
413 | /* Print a character as an octal or hex escape. */ | |
414 | #define PRINT_CHAR_ESCAPE(i, port) \ | |
415 | do \ | |
416 | { \ | |
417 | if (!SCM_R6RS_ESCAPES_P) \ | |
418 | scm_intprint (i, 8, port); \ | |
419 | else \ | |
420 | { \ | |
421 | scm_puts ("x", port); \ | |
422 | scm_intprint (i, 16, port); \ | |
423 | } \ | |
424 | } \ | |
425 | while (0) | |
426 | ||
427 | ||
0f2d19dd | 428 | void |
1bbd0b84 | 429 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
430 | { |
431 | if (pstate->fancyp | |
432 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
433 | { | |
81ae25da | 434 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 435 | iprin1 (exp, port, pstate); |
81ae25da | 436 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
437 | } |
438 | else | |
439 | iprin1 (exp, port, pstate); | |
440 | } | |
441 | ||
442 | static void | |
443 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 444 | { |
54778cd3 | 445 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 446 | { |
e34f941a DH |
447 | case scm_tc3_tc7_1: |
448 | case scm_tc3_tc7_2: | |
449 | /* These tc3 tags should never occur in an immediate value. They are | |
450 | * only used in cell types of non-immediates, i. e. the value returned | |
451 | * by SCM_CELL_TYPE (exp) can use these tags. | |
452 | */ | |
453 | scm_ipruk ("immediate", exp, port); | |
454 | break; | |
455 | case scm_tc3_int_1: | |
456 | case scm_tc3_int_2: | |
e11e83f3 | 457 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 458 | break; |
e34f941a | 459 | case scm_tc3_imm24: |
7866a09b | 460 | if (SCM_CHARP (exp)) |
0f2d19dd | 461 | { |
904a78f1 | 462 | scm_t_wchar i = SCM_CHAR (exp); |
77332b21 | 463 | const char *name; |
5ca6dc39 | 464 | |
b7f3516f TT |
465 | if (SCM_WRITINGP (pstate)) |
466 | { | |
467 | scm_puts ("#\\", port); | |
77332b21 MG |
468 | name = scm_i_charname (exp); |
469 | if (name != NULL) | |
470 | scm_puts (name, port); | |
904a78f1 MG |
471 | else if (uc_is_general_category_withtable (i, UC_CATEGORY_MASK_L |
472 | | UC_CATEGORY_MASK_M | |
473 | | UC_CATEGORY_MASK_N | |
474 | | UC_CATEGORY_MASK_P | |
475 | | UC_CATEGORY_MASK_S)) | |
476 | /* Print the character if is graphic character. */ | |
477 | { | |
889975e5 | 478 | scm_t_wchar *wbuf; |
0dcd7e61 | 479 | SCM wstr; |
889975e5 MG |
480 | char *buf; |
481 | size_t len; | |
482 | const char *enc; | |
483 | ||
484 | enc = scm_i_get_port_encoding (port); | |
0dcd7e61 MG |
485 | if (uc_combining_class (i) == UC_CCC_NR) |
486 | { | |
487 | wstr = scm_i_make_wide_string (1, &wbuf); | |
488 | wbuf[0] = i; | |
489 | } | |
490 | else | |
491 | { | |
492 | /* Character is a combining character: print it connected | |
493 | to a dotted circle instead of connecting it to the | |
494 | backslash in '#\' */ | |
495 | wstr = scm_i_make_wide_string (2, &wbuf); | |
496 | wbuf[0] = SCM_CODEPOINT_DOTTED_CIRCLE; | |
497 | wbuf[1] = i; | |
498 | } | |
930ddd34 | 499 | if (enc == NULL) |
889975e5 | 500 | { |
930ddd34 MG |
501 | if (i <= 0xFF) |
502 | /* Character is graphic and Latin-1. Print it */ | |
503 | scm_lfwrite_str (wstr, port); | |
504 | else | |
505 | /* Character is graphic but unrepresentable in | |
506 | this port's encoding. */ | |
dea901d6 | 507 | PRINT_CHAR_ESCAPE (i, port); |
889975e5 | 508 | } |
904a78f1 | 509 | else |
889975e5 MG |
510 | { |
511 | buf = u32_conv_to_encoding (enc, | |
512 | iconveh_error, | |
513 | (scm_t_uint32 *) wbuf, | |
514 | 1, | |
515 | NULL, | |
516 | NULL, &len); | |
517 | if (buf != NULL) | |
518 | { | |
519 | /* Character is graphic. Print it. */ | |
520 | scm_lfwrite_str (wstr, port); | |
521 | free (buf); | |
522 | } | |
523 | else | |
524 | /* Character is graphic but unrepresentable in | |
525 | this port's encoding. */ | |
dea901d6 | 526 | PRINT_CHAR_ESCAPE (i, port); |
889975e5 | 527 | } |
904a78f1 MG |
528 | } |
529 | else | |
f7118e35 | 530 | /* Character is a non-graphical character. */ |
dea901d6 | 531 | PRINT_CHAR_ESCAPE (i, port); |
b7f3516f TT |
532 | } |
533 | else | |
889975e5 | 534 | scm_i_charprint (i, port); |
0f2d19dd | 535 | } |
a51ea417 | 536 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
537 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
538 | { | |
539 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
540 | } | |
0f2d19dd | 541 | else |
e34f941a DH |
542 | { |
543 | /* unknown immediate value */ | |
544 | scm_ipruk ("immediate", exp, port); | |
545 | } | |
0f2d19dd | 546 | break; |
e34f941a | 547 | case scm_tc3_cons: |
0f2d19dd JB |
548 | switch (SCM_TYP7 (exp)) |
549 | { | |
904a077d MV |
550 | case scm_tcs_struct: |
551 | { | |
552 | ENTER_NESTED_DATA (pstate, exp, circref); | |
553 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
554 | { | |
555 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
556 | if (!print) | |
557 | goto print_struct; | |
dfd03fb9 | 558 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 559 | pstate->revealed = 1; |
904a077d MV |
560 | scm_call_generic_2 (print, exp, pwps); |
561 | } | |
562 | else | |
563 | { | |
564 | print_struct: | |
565 | scm_print_struct (exp, port, pstate); | |
566 | } | |
567 | EXIT_NESTED_DATA (pstate); | |
568 | } | |
569 | break; | |
0f2d19dd JB |
570 | case scm_tcs_cons_imcar: |
571 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
572 | ENTER_NESTED_DATA (pstate, exp, circref); |
573 | scm_iprlist ("(", exp, ')', port, pstate); | |
574 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
575 | break; |
576 | circref: | |
c62fbfe1 | 577 | print_circref (port, pstate, exp); |
0f2d19dd | 578 | break; |
534c55a9 DH |
579 | case scm_tc7_number: |
580 | switch SCM_TYP16 (exp) { | |
581 | case scm_tc16_big: | |
582 | scm_bigprint (exp, port, pstate); | |
583 | break; | |
584 | case scm_tc16_real: | |
585 | scm_print_real (exp, port, pstate); | |
586 | break; | |
587 | case scm_tc16_complex: | |
588 | scm_print_complex (exp, port, pstate); | |
589 | break; | |
f92e85f7 MV |
590 | case scm_tc16_fraction: |
591 | scm_i_print_fraction (exp, port, pstate); | |
592 | break; | |
534c55a9 DH |
593 | } |
594 | break; | |
9c44cd45 MG |
595 | case scm_tc7_string: |
596 | if (SCM_WRITINGP (pstate)) | |
597 | { | |
dea901d6 | 598 | size_t i, len; |
9c44cd45 | 599 | static char const hex[] = "0123456789abcdef"; |
dea901d6 | 600 | char buf[9]; |
5ca6dc39 | 601 | |
9c44cd45 MG |
602 | |
603 | scm_putc ('"', port); | |
604 | len = scm_i_string_length (exp); | |
605 | for (i = 0; i < len; ++i) | |
606 | { | |
607 | scm_t_wchar ch = scm_i_string_ref (exp, i); | |
608 | int printed = 0; | |
609 | ||
610 | if (ch == ' ' || ch == '\n') | |
611 | { | |
612 | scm_putc (ch, port); | |
613 | printed = 1; | |
614 | } | |
615 | else if (ch == '"' || ch == '\\') | |
616 | { | |
617 | scm_putc ('\\', port); | |
32be5735 | 618 | scm_i_charprint (ch, port); |
9c44cd45 MG |
619 | printed = 1; |
620 | } | |
621 | else | |
622 | if (uc_is_general_category_withtable | |
623 | (ch, | |
624 | UC_CATEGORY_MASK_L | UC_CATEGORY_MASK_M | | |
625 | UC_CATEGORY_MASK_N | UC_CATEGORY_MASK_P | | |
626 | UC_CATEGORY_MASK_S)) | |
627 | { | |
628 | /* Print the character since it is a graphic | |
629 | character. */ | |
630 | scm_t_wchar *wbuf; | |
631 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
632 | char *buf; | |
633 | size_t len; | |
889975e5 MG |
634 | |
635 | if (scm_i_get_port_encoding (port)) | |
9c44cd45 | 636 | { |
889975e5 MG |
637 | wstr = scm_i_make_wide_string (1, &wbuf); |
638 | wbuf[0] = ch; | |
639 | buf = u32_conv_to_encoding (scm_i_get_port_encoding (port), | |
640 | iconveh_error, | |
641 | (scm_t_uint32 *) wbuf, | |
642 | 1 , | |
643 | NULL, | |
644 | NULL, &len); | |
645 | if (buf != NULL) | |
646 | { | |
647 | /* Character is graphic and representable in | |
648 | this encoding. Print it. */ | |
649 | scm_lfwrite_str (wstr, port); | |
650 | free (buf); | |
651 | printed = 1; | |
652 | } | |
9c44cd45 | 653 | } |
889975e5 MG |
654 | else |
655 | if (ch <= 0xFF) | |
656 | { | |
657 | scm_putc (ch, port); | |
658 | printed = 1; | |
659 | } | |
9c44cd45 MG |
660 | } |
661 | ||
662 | if (!printed) | |
663 | { | |
664 | /* Character is graphic but unrepresentable in | |
665 | this port's encoding or is not graphic. */ | |
dea901d6 | 666 | if (!SCM_R6RS_ESCAPES_P) |
9c44cd45 | 667 | { |
dea901d6 MG |
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 | } | |
686 | else if (ch > 0xFFFF) | |
687 | { | |
688 | buf[0] = '\\'; | |
689 | buf[1] = 'U'; | |
690 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
691 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
692 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
693 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
694 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
695 | buf[7] = hex[(ch & 0xF)]; | |
696 | scm_lfwrite (buf, 8, port); | |
697 | } | |
9c44cd45 | 698 | } |
dea901d6 | 699 | else |
9c44cd45 | 700 | { |
dea901d6 MG |
701 | scm_t_wchar ch2 = ch; |
702 | ||
703 | /* Print an R6RS variable-length hex escape: "\xNNNN;" | |
704 | */ | |
705 | int i = 8; | |
706 | buf[i] = ';'; | |
707 | i --; | |
708 | if (ch == 0) | |
709 | buf[i--] = '0'; | |
710 | else | |
711 | while (ch2 > 0) | |
712 | { | |
713 | buf[i] = hex[ch2 & 0xF]; | |
714 | ch2 >>= 4; | |
715 | i --; | |
716 | } | |
717 | buf[i] = 'x'; | |
718 | i --; | |
719 | buf[i] = '\\'; | |
720 | scm_lfwrite (buf + i, 9 - i, port); | |
9c44cd45 MG |
721 | } |
722 | } | |
723 | } | |
724 | scm_putc ('"', port); | |
725 | scm_remember_upto_here_1 (exp); | |
726 | } | |
727 | else | |
6234ff20 | 728 | scm_lfwrite_str (exp, port); |
9c44cd45 MG |
729 | scm_remember_upto_here_1 (exp); |
730 | break; | |
28b06554 | 731 | case scm_tc7_symbol: |
cc95e00a | 732 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 733 | { |
e23106d5 | 734 | scm_i_print_symbol_name (exp, port); |
9ff28a13 MV |
735 | scm_remember_upto_here_1 (exp); |
736 | } | |
737 | else | |
738 | { | |
739 | scm_puts ("#<uninterned-symbol ", port); | |
e23106d5 | 740 | scm_i_print_symbol_name (exp, port); |
9ff28a13 | 741 | scm_putc (' ', port); |
0345e278 | 742 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
743 | scm_putc ('>', port); |
744 | } | |
6662998f | 745 | break; |
e5aca4b5 MV |
746 | case scm_tc7_variable: |
747 | scm_i_variable_print (exp, port, pstate); | |
748 | break; | |
2fb924f6 AW |
749 | case scm_tc7_program: |
750 | scm_i_program_print (exp, port, pstate); | |
751 | break; | |
e2c2a699 AW |
752 | case scm_tc7_foreign: |
753 | scm_i_foreign_print (exp, port, pstate); | |
754 | break; | |
c99de5aa AW |
755 | case scm_tc7_hashtable: |
756 | scm_i_hashtable_print (exp, port, pstate); | |
757 | break; | |
9ea31741 AW |
758 | case scm_tc7_fluid: |
759 | scm_i_fluid_print (exp, port, pstate); | |
760 | break; | |
45cf2428 AW |
761 | case scm_tc7_dynamic_state: |
762 | scm_i_dynamic_state_print (exp, port, pstate); | |
763 | break; | |
6f3b0cc2 AW |
764 | case scm_tc7_frame: |
765 | scm_i_frame_print (exp, port, pstate); | |
766 | break; | |
767 | case scm_tc7_objcode: | |
768 | scm_i_objcode_print (exp, port, pstate); | |
769 | break; | |
770 | case scm_tc7_vm: | |
771 | scm_i_vm_print (exp, port, pstate); | |
772 | break; | |
773 | case scm_tc7_vm_cont: | |
774 | scm_i_vm_cont_print (exp, port, pstate); | |
775 | break; | |
0f2d19dd | 776 | case scm_tc7_wvect: |
c62fbfe1 | 777 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 778 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 779 | scm_puts ("#wh(", port); |
0f2d19dd | 780 | else |
b7f3516f | 781 | scm_puts ("#w(", port); |
0f2d19dd JB |
782 | goto common_vector_printer; |
783 | ||
807e5a66 LC |
784 | case scm_tc7_bytevector: |
785 | scm_i_print_bytevector (exp, port, pstate); | |
786 | break; | |
0f2d19dd | 787 | case scm_tc7_vector: |
c62fbfe1 | 788 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 789 | scm_puts ("#(", port); |
0f2d19dd | 790 | common_vector_printer: |
9fbaf27c | 791 | { |
c014a02e | 792 | register long i; |
4057a3e0 | 793 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 794 | int cutp = 0; |
4057a3e0 MV |
795 | if (pstate->fancyp |
796 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
797 | { |
798 | last = pstate->length - 1; | |
799 | cutp = 1; | |
800 | } | |
c367c4b4 | 801 | if (SCM_I_WVECTP (exp)) |
9fbaf27c | 802 | { |
c367c4b4 LC |
803 | /* Elements of weak vectors may not be accessed via the |
804 | `SIMPLE_VECTOR_REF ()' macro. */ | |
805 | for (i = 0; i < last; ++i) | |
806 | { | |
807 | scm_iprin1 (scm_c_vector_ref (exp, i), | |
808 | port, pstate); | |
809 | scm_putc (' ', port); | |
810 | } | |
9fbaf27c | 811 | } |
c367c4b4 LC |
812 | else |
813 | { | |
814 | for (i = 0; i < last; ++i) | |
815 | { | |
816 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); | |
817 | scm_putc (' ', port); | |
818 | } | |
819 | } | |
820 | ||
9fbaf27c MD |
821 | if (i == last) |
822 | { | |
823 | /* CHECK_INTS; */ | |
c367c4b4 | 824 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
9fbaf27c MD |
825 | } |
826 | if (cutp) | |
b7f3516f TT |
827 | scm_puts (" ...", port); |
828 | scm_putc (')', port); | |
9fbaf27c | 829 | } |
c62fbfe1 | 830 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 831 | break; |
0f2d19dd | 832 | case scm_tc7_port: |
5ca6dc39 JB |
833 | { |
834 | register long i = SCM_PTOBNUM (exp); | |
835 | if (i < scm_numptob | |
836 | && scm_ptobs[i].print | |
837 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 838 | break; |
5ca6dc39 JB |
839 | goto punk; |
840 | } | |
841 | case scm_tc7_smob: | |
7a7f7c53 DH |
842 | ENTER_NESTED_DATA (pstate, exp, circref); |
843 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
844 | EXIT_NESTED_DATA (pstate); | |
845 | break; | |
0f2d19dd | 846 | default: |
314b8716 | 847 | /* case scm_tcs_closures: */ |
a51ea417 MD |
848 | punk: |
849 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
850 | } |
851 | } | |
852 | } | |
853 | ||
c62fbfe1 MD |
854 | /* Print states are necessary for circular reference safe printing. |
855 | * They are also expensive to allocate. Therefore print states are | |
856 | * kept in a pool so that they can be reused. | |
857 | */ | |
1cc91f1b | 858 | |
bb35f315 MV |
859 | /* The PORT argument can also be a print-state/port pair, which will |
860 | * then be used instead of allocating a new print state. This is | |
861 | * useful for continuing a chain of print calls from Scheme. */ | |
862 | ||
a51ea417 | 863 | void |
1bbd0b84 | 864 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 865 | { |
c4f37e80 MV |
866 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
867 | SCM pstate_scm; | |
c62fbfe1 | 868 | scm_print_state *pstate; |
15635be5 | 869 | int old_writingp; |
c62fbfe1 | 870 | |
bb35f315 MV |
871 | /* If PORT is a print-state/port pair, use that. Else create a new |
872 | print-state. */ | |
c4f37e80 | 873 | |
0c95b57d | 874 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 875 | { |
52235e71 MD |
876 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
877 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
878 | } |
879 | else | |
c62fbfe1 | 880 | { |
c4f37e80 | 881 | /* First try to allocate a print state from the pool */ |
9de87eea | 882 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 883 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 884 | { |
d5cf5324 DH |
885 | handle = print_state_pool; |
886 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 887 | } |
9de87eea | 888 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 889 | if (scm_is_false (handle)) |
d5cf5324 | 890 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 891 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 892 | } |
c62fbfe1 | 893 | |
c4f37e80 | 894 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 895 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
896 | pstate->writingp = writingp; |
897 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 898 | pstate->writingp = old_writingp; |
c62fbfe1 | 899 | |
bb35f315 MV |
900 | /* Return print state to pool if it has been created above and |
901 | hasn't escaped to Scheme. */ | |
902 | ||
7888309b | 903 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 904 | { |
9de87eea | 905 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
906 | SCM_SETCDR (handle, print_state_pool); |
907 | print_state_pool = handle; | |
9de87eea | 908 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 909 | } |
a51ea417 MD |
910 | } |
911 | ||
9c44cd45 MG |
912 | /* Print a character. |
913 | */ | |
914 | void | |
889975e5 | 915 | scm_i_charprint (scm_t_wchar ch, SCM port) |
9c44cd45 MG |
916 | { |
917 | scm_t_wchar *wbuf; | |
918 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
919 | ||
920 | wbuf[0] = ch; | |
921 | scm_lfwrite_str (wstr, port); | |
922 | } | |
0f2d19dd JB |
923 | |
924 | /* Print an integer. | |
925 | */ | |
1cc91f1b | 926 | |
0f2d19dd | 927 | void |
a406c9e9 | 928 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
929 | { |
930 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 931 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
932 | } |
933 | ||
a406c9e9 MV |
934 | void |
935 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
936 | { | |
937 | char num_buf[SCM_INTBUFLEN]; | |
938 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
939 | } | |
940 | ||
0f2d19dd JB |
941 | /* Print an object of unrecognized type. |
942 | */ | |
1cc91f1b | 943 | |
0f2d19dd | 944 | void |
1bbd0b84 | 945 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 946 | { |
b7f3516f TT |
947 | scm_puts ("#<unknown-", port); |
948 | scm_puts (hdr, port); | |
26224b3f | 949 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
0f2d19dd | 950 | { |
b7f3516f | 951 | scm_puts (" (0x", port); |
0345e278 | 952 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 953 | scm_puts (" . 0x", port); |
0345e278 | 954 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 955 | scm_puts (") @", port); |
0f2d19dd | 956 | } |
b7f3516f | 957 | scm_puts (" 0x", port); |
0345e278 | 958 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 959 | scm_putc ('>', port); |
0f2d19dd JB |
960 | } |
961 | ||
1cc91f1b | 962 | |
904a077d | 963 | /* Print a list. |
22a52da1 | 964 | */ |
0f2d19dd | 965 | void |
34d19ef6 | 966 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 967 | { |
c62fbfe1 | 968 | register SCM hare, tortoise; |
c014a02e | 969 | long floor = pstate->top - 2; |
b7f3516f | 970 | scm_puts (hdr, port); |
0f2d19dd | 971 | /* CHECK_INTS; */ |
c62fbfe1 MD |
972 | if (pstate->fancyp) |
973 | goto fancy_printing; | |
974 | ||
975 | /* Run a hare and tortoise so that total time complexity will be | |
976 | O(depth * N) instead of O(N^2). */ | |
977 | hare = SCM_CDR (exp); | |
978 | tortoise = exp; | |
d2e53ed6 | 979 | while (scm_is_pair (hare)) |
c62fbfe1 | 980 | { |
bc36d050 | 981 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
982 | goto fancy_printing; |
983 | hare = SCM_CDR (hare); | |
d2e53ed6 | 984 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
985 | break; |
986 | hare = SCM_CDR (hare); | |
987 | tortoise = SCM_CDR (tortoise); | |
988 | } | |
989 | ||
990 | /* No cdr cycles intrinsic to this list */ | |
991 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 992 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 993 | { |
c014a02e | 994 | register long i; |
5ca6dc39 | 995 | |
c62fbfe1 | 996 | for (i = floor; i >= 0; --i) |
509759dd | 997 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
998 | goto circref; |
999 | PUSH_REF (pstate, exp); | |
b7f3516f | 1000 | scm_putc (' ', port); |
0f2d19dd | 1001 | /* CHECK_INTS; */ |
c62fbfe1 | 1002 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 1003 | } |
c96d76b8 | 1004 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 1005 | { |
b7f3516f | 1006 | scm_puts (" . ", port); |
c62fbfe1 | 1007 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 1008 | } |
c62fbfe1 | 1009 | |
a51ea417 | 1010 | end: |
b7f3516f | 1011 | scm_putc (tlr, port); |
c62fbfe1 | 1012 | pstate->top = floor + 2; |
a51ea417 | 1013 | return; |
c62fbfe1 MD |
1014 | |
1015 | fancy_printing: | |
1016 | { | |
c014a02e | 1017 | long n = pstate->length; |
c62fbfe1 MD |
1018 | |
1019 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1020 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 1021 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 1022 | { |
c014a02e | 1023 | register unsigned long i; |
5ca6dc39 | 1024 | |
c62fbfe1 | 1025 | for (i = 0; i < pstate->top; ++i) |
509759dd | 1026 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
1027 | goto fancy_circref; |
1028 | if (pstate->fancyp) | |
1029 | { | |
1030 | if (n == 0) | |
1031 | { | |
b7f3516f | 1032 | scm_puts (" ...", port); |
c62fbfe1 MD |
1033 | goto skip_tail; |
1034 | } | |
1035 | else | |
1036 | --n; | |
1037 | } | |
1038 | PUSH_REF(pstate, exp); | |
1039 | ++pstate->list_offset; | |
b7f3516f | 1040 | scm_putc (' ', port); |
c62fbfe1 MD |
1041 | /* CHECK_INTS; */ |
1042 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
1043 | } | |
1044 | } | |
c96d76b8 | 1045 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 1046 | { |
b7f3516f | 1047 | scm_puts (" . ", port); |
c62fbfe1 MD |
1048 | scm_iprin1 (exp, port, pstate); |
1049 | } | |
1050 | skip_tail: | |
1051 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 1052 | goto end; |
a51ea417 | 1053 | |
c62fbfe1 MD |
1054 | fancy_circref: |
1055 | pstate->list_offset -= pstate->top - floor - 2; | |
1056 | ||
1057 | circref: | |
b7f3516f | 1058 | scm_puts (" . ", port); |
c62fbfe1 MD |
1059 | print_circref (port, pstate, exp); |
1060 | goto end; | |
0f2d19dd JB |
1061 | } |
1062 | ||
1063 | \f | |
1064 | ||
bb35f315 MV |
1065 | int |
1066 | scm_valid_oport_value_p (SCM val) | |
1067 | { | |
368cf54d GB |
1068 | return (SCM_OPOUTPORTP (val) |
1069 | || (SCM_PORT_WITH_PS_P (val) | |
1070 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
1071 | } |
1072 | ||
8b840115 | 1073 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 1074 | |
0f2d19dd | 1075 | SCM |
1bbd0b84 | 1076 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
1077 | { |
1078 | if (SCM_UNBNDP (port)) | |
9de87eea | 1079 | port = scm_current_output_port (); |
3eb7e6ee JB |
1080 | |
1081 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 1082 | |
a51ea417 | 1083 | scm_prin1 (obj, port, 1); |
23d72566 | 1084 | #if 0 |
0f2d19dd JB |
1085 | #ifdef HAVE_PIPE |
1086 | # ifdef EPIPE | |
1087 | if (EPIPE == errno) | |
1088 | scm_close_port (port); | |
1089 | # endif | |
23d72566 | 1090 | #endif |
0f2d19dd JB |
1091 | #endif |
1092 | return SCM_UNSPECIFIED; | |
1093 | } | |
1094 | ||
1095 | ||
8b840115 | 1096 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1097 | |
0f2d19dd | 1098 | SCM |
1bbd0b84 | 1099 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1100 | { |
1101 | if (SCM_UNBNDP (port)) | |
9de87eea | 1102 | port = scm_current_output_port (); |
3eb7e6ee JB |
1103 | |
1104 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1105 | |
a51ea417 | 1106 | scm_prin1 (obj, port, 0); |
23d72566 | 1107 | #if 0 |
0f2d19dd JB |
1108 | #ifdef HAVE_PIPE |
1109 | # ifdef EPIPE | |
1110 | if (EPIPE == errno) | |
1111 | scm_close_port (port); | |
1112 | # endif | |
23d72566 | 1113 | #endif |
0f2d19dd JB |
1114 | #endif |
1115 | return SCM_UNSPECIFIED; | |
1116 | } | |
1117 | ||
70d63753 GB |
1118 | |
1119 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1120 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1121 | "Write @var{message} to @var{destination}, defaulting to\n" |
1122 | "the current output port.\n" | |
1123 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1124 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1125 | "the escapes are replaced with corresponding members of\n" | |
1126 | "@var{ARGS}:\n" | |
1127 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1128 | "using @code{write}.\n" | |
1129 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1130 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1131 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1132 | #define FUNC_NAME s_scm_simple_format |
1133 | { | |
dfd03fb9 | 1134 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1135 | int fReturnString = 0; |
1136 | int writingp; | |
889975e5 | 1137 | size_t start, p, end; |
70d63753 | 1138 | |
bc36d050 | 1139 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1140 | { |
9de87eea | 1141 | destination = port = scm_current_output_port (); |
daba1a71 | 1142 | } |
7888309b | 1143 | else if (scm_is_false (destination)) |
daba1a71 MD |
1144 | { |
1145 | fReturnString = 1; | |
dfd03fb9 MD |
1146 | port = scm_mkstrport (SCM_INUM0, |
1147 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
1148 | SCM_OPN | SCM_WRTNG, | |
1149 | FUNC_NAME); | |
1150 | destination = port; | |
daba1a71 MD |
1151 | } |
1152 | else | |
1153 | { | |
1154 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1155 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1156 | } |
1157 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1158 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1159 | |
889975e5 MG |
1160 | p = 0; |
1161 | start = 0; | |
1162 | end = scm_i_string_length (message); | |
b24b5e13 | 1163 | for (p = start; p != end; ++p) |
889975e5 | 1164 | if (scm_i_string_ref (message, p) == '~') |
70d63753 | 1165 | { |
b24b5e13 | 1166 | if (++p == end) |
6662998f MV |
1167 | break; |
1168 | ||
889975e5 | 1169 | switch (scm_i_string_ref (message, p)) |
6662998f MV |
1170 | { |
1171 | case 'A': case 'a': | |
1172 | writingp = 0; | |
1173 | break; | |
1174 | case 'S': case 's': | |
1175 | writingp = 1; | |
1176 | break; | |
1177 | case '~': | |
889975e5 | 1178 | scm_lfwrite_substr (message, start, p, port); |
6662998f MV |
1179 | start = p + 1; |
1180 | continue; | |
1181 | case '%': | |
889975e5 | 1182 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1183 | scm_newline (port); |
6662998f MV |
1184 | start = p + 1; |
1185 | continue; | |
1186 | default: | |
1afff620 | 1187 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
889975e5 | 1188 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f MV |
1189 | |
1190 | } | |
70d63753 | 1191 | |
6662998f | 1192 | |
d2e53ed6 | 1193 | if (!scm_is_pair (args)) |
1afff620 | 1194 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
889975e5 | 1195 | scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message, p)))); |
6662998f | 1196 | |
889975e5 | 1197 | scm_lfwrite_substr (message, start, p - 1, port); |
dfd03fb9 | 1198 | /* we pass destination here */ |
70d63753 GB |
1199 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1200 | args = SCM_CDR (args); | |
1201 | start = p + 1; | |
1202 | } | |
6662998f | 1203 | |
889975e5 | 1204 | scm_lfwrite_substr (message, start, p, port); |
bc36d050 | 1205 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1206 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1207 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1208 | |
1209 | if (fReturnString) | |
1210 | answer = scm_strport_to_string (destination); | |
1211 | ||
daba1a71 | 1212 | return scm_return_first (answer, message); |
70d63753 GB |
1213 | } |
1214 | #undef FUNC_NAME | |
1215 | ||
1216 | ||
3b3b36dd | 1217 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1218 | (SCM port), |
8f85c0c6 NJ |
1219 | "Send a newline to @var{port}.\n" |
1220 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1221 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1222 | { |
1223 | if (SCM_UNBNDP (port)) | |
9de87eea | 1224 | port = scm_current_output_port (); |
3eb7e6ee | 1225 | |
34d19ef6 | 1226 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1227 | |
0ef4ae82 | 1228 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1229 | return SCM_UNSPECIFIED; |
1230 | } | |
1bbd0b84 | 1231 | #undef FUNC_NAME |
0f2d19dd | 1232 | |
3b3b36dd | 1233 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1234 | (SCM chr, SCM port), |
eca65e90 | 1235 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1236 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1237 | { |
1238 | if (SCM_UNBNDP (port)) | |
9de87eea | 1239 | port = scm_current_output_port (); |
3eb7e6ee | 1240 | |
34d19ef6 HWN |
1241 | SCM_VALIDATE_CHAR (1, chr); |
1242 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
3d03f939 MG |
1243 | |
1244 | scm_i_charprint (SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); | |
23d72566 | 1245 | #if 0 |
0f2d19dd JB |
1246 | #ifdef HAVE_PIPE |
1247 | # ifdef EPIPE | |
1248 | if (EPIPE == errno) | |
1249 | scm_close_port (port); | |
1250 | # endif | |
23d72566 | 1251 | #endif |
0f2d19dd JB |
1252 | #endif |
1253 | return SCM_UNSPECIFIED; | |
1254 | } | |
1bbd0b84 | 1255 | #undef FUNC_NAME |
0f2d19dd | 1256 | |
0f2d19dd JB |
1257 | \f |
1258 | ||
bb35f315 | 1259 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1260 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1261 | * containing PORT and PSTATE. This object can be used as the port for | |
1262 | * display/write etc to continue the current print chain. The REVEALED | |
1263 | * field of PSTATE is set to true to indicate that the print state has | |
1264 | * escaped to Scheme and thus has to be freed by the GC. | |
1265 | */ | |
1266 | ||
92c2555f | 1267 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1268 | |
1269 | /* Print exactly as the port itself would */ | |
1270 | ||
1271 | static int | |
e841c3e0 | 1272 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1273 | { |
1274 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1275 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1276 | } | |
c4f37e80 MV |
1277 | |
1278 | SCM | |
1bbd0b84 | 1279 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1280 | { |
bb35f315 | 1281 | pstate->revealed = 1; |
dfd03fb9 MD |
1282 | return scm_call_2 (proc, exp, |
1283 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1284 | } |
1285 | ||
dfd03fb9 | 1286 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1287 | (SCM port, SCM pstate), |
71331188 | 1288 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1289 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1290 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1291 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1292 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1293 | { |
34d19ef6 | 1294 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1295 | if (!SCM_UNBNDP (pstate)) |
1296 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1297 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1298 | } |
1bbd0b84 | 1299 | #undef FUNC_NAME |
c19bc088 | 1300 | |
a1ec6916 | 1301 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1302 | (SCM port), |
71331188 MG |
1303 | "Return the print state of the port @var{port}. If @var{port}\n" |
1304 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1305 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1306 | { |
368cf54d GB |
1307 | if (SCM_PORT_WITH_PS_P (port)) |
1308 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1309 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1310 | return SCM_BOOL_F; |
276dd677 | 1311 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1312 | } |
1bbd0b84 | 1313 | #undef FUNC_NAME |
bb35f315 | 1314 | |
c4f37e80 | 1315 | \f |
1cc91f1b | 1316 | |
0f2d19dd JB |
1317 | void |
1318 | scm_init_print () | |
0f2d19dd | 1319 | { |
c19bc088 | 1320 | SCM vtable, layout, type; |
d5cf5324 | 1321 | |
62560650 | 1322 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1323 | |
81ae25da MV |
1324 | scm_print_options (scm_list_4 (scm_from_locale_symbol ("highlight-prefix"), |
1325 | scm_from_locale_string ("{"), | |
1326 | scm_from_locale_symbol ("highlight-suffix"), | |
1327 | scm_from_locale_string ("}"))); | |
1328 | ||
d5cf5324 DH |
1329 | scm_gc_register_root (&print_state_pool); |
1330 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1331 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1332 | layout = |
1333 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1334 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
cc95e00a | 1335 | scm_set_struct_vtable_name_x (type, scm_from_locale_symbol ("print-state")); |
bb35f315 | 1336 | scm_print_state_vtable = type; |
c4f37e80 | 1337 | |
c19bc088 MD |
1338 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1339 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
e841c3e0 | 1340 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1341 | |
a0599745 | 1342 | #include "libguile/print.x" |
475fa9a5 MV |
1343 | |
1344 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1345 | } |
89e00824 ML |
1346 | |
1347 | /* | |
1348 | Local Variables: | |
1349 | c-file-style: "gnu" | |
1350 | End: | |
1351 | */ |