Commit | Line | Data |
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e20d7001 | 1 | /* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
0f2d19dd | 24 | |
e6e2e95a | 25 | #include <errno.h> |
904a78f1 | 26 | #include <unictype.h> |
e6e2e95a | 27 | |
a0599745 MD |
28 | #include "libguile/_scm.h" |
29 | #include "libguile/chars.h" | |
a002f1a2 | 30 | #include "libguile/continuations.h" |
a0599745 MD |
31 | #include "libguile/smob.h" |
32 | #include "libguile/eval.h" | |
33 | #include "libguile/macros.h" | |
34 | #include "libguile/procprop.h" | |
35 | #include "libguile/read.h" | |
36 | #include "libguile/weaks.h" | |
37 | #include "libguile/unif.h" | |
38 | #include "libguile/alist.h" | |
39 | #include "libguile/struct.h" | |
40 | #include "libguile/objects.h" | |
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" |
a0599745 MD |
48 | |
49 | #include "libguile/validate.h" | |
50 | #include "libguile/print.h" | |
22fc179a HWN |
51 | |
52 | #include "libguile/private-options.h" | |
53 | ||
0f2d19dd JB |
54 | \f |
55 | ||
56 | /* {Names of immediate symbols} | |
57 | * | |
58 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
59 | */ | |
60 | ||
e17d318f DH |
61 | /* This table must agree with the list of flags in tags.h. */ |
62 | static const char *iflagnames[] = | |
63 | { | |
64 | "#f", | |
65 | "#t", | |
66 | "#<undefined>", | |
67 | "#<eof>", | |
68 | "()", | |
69 | "#<unspecified>", | |
70 | ||
71 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ | |
72 | "#<unbound>", | |
73 | ||
74 | /* Elisp nil value. This is its Scheme name; whenever it's printed in | |
75 | * Elisp, it should appear as the symbol `nil'. */ | |
76 | "#nil" | |
77 | }; | |
78 | ||
475fa9a5 MV |
79 | SCM_SYMBOL (sym_reader, "reader"); |
80 | ||
92c2555f | 81 | scm_t_option scm_print_opts[] = { |
726d810a DH |
82 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK (SCM_BOOL_F), |
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 }, | |
96 | ||
e6e4c9af MD |
97 | }; |
98 | ||
a1ec6916 | 99 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 100 | (SCM setting), |
71331188 | 101 | "Option interface for the print options. Instead of using\n" |
1dd05fd8 MG |
102 | "this procedure directly, use the procedures\n" |
103 | "@code{print-enable}, @code{print-disable}, @code{print-set!}\n" | |
104 | "and @code{print-options}.") | |
1bbd0b84 | 105 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 106 | { |
a51ea417 | 107 | SCM ans = scm_options (setting, |
b7ff98dd | 108 | scm_print_opts, |
1bbd0b84 | 109 | FUNC_NAME); |
e6e4c9af MD |
110 | return ans; |
111 | } | |
1bbd0b84 | 112 | #undef FUNC_NAME |
e6e4c9af | 113 | |
0f2d19dd JB |
114 | \f |
115 | /* {Printing of Scheme Objects} | |
116 | */ | |
117 | ||
a51ea417 | 118 | /* Detection of circular references. |
c62fbfe1 MD |
119 | * |
120 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
121 | * time complexity (O (depth * N)), The printer code can be |
122 | * rewritten to be O(N). | |
a51ea417 | 123 | */ |
dbb5de29 NJ |
124 | #define PUSH_REF(pstate, obj) \ |
125 | do \ | |
126 | { \ | |
127 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ | |
128 | pstate->top++; \ | |
129 | if (pstate->top == pstate->ceiling) \ | |
130 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 131 | } while(0) |
a51ea417 | 132 | |
dbb5de29 NJ |
133 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
134 | do \ | |
135 | { \ | |
136 | register unsigned long i; \ | |
137 | for (i = 0; i < pstate->top; ++i) \ | |
138 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ | |
139 | goto label; \ | |
140 | if (pstate->fancyp) \ | |
141 | { \ | |
142 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
143 | { \ | |
144 | scm_putc ('#', port); \ | |
145 | return; \ | |
146 | } \ | |
147 | } \ | |
148 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 149 | } while(0) |
a51ea417 | 150 | |
dbb5de29 NJ |
151 | #define EXIT_NESTED_DATA(pstate) \ |
152 | do \ | |
153 | { \ | |
154 | --pstate->top; \ | |
155 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ | |
156 | } \ | |
157 | while (0) | |
c62fbfe1 | 158 | |
d5cf5324 DH |
159 | SCM scm_print_state_vtable = SCM_BOOL_F; |
160 | static SCM print_state_pool = SCM_EOL; | |
9de87eea | 161 | scm_i_pthread_mutex_t print_state_mutex = SCM_I_PTHREAD_MUTEX_INITIALIZER; |
c4f37e80 | 162 | |
f843a84c | 163 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 164 | |
3b3b36dd | 165 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 166 | (), |
d5cf5324 | 167 | "Return the current-pstate -- the car of the\n" |
5352393c MG |
168 | "@code{print_state_pool}. @code{current-pstate} is only\n" |
169 | "included in @code{--enable-guile-debug} builds.") | |
1bbd0b84 | 170 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 171 | { |
d2e53ed6 | 172 | if (!scm_is_null (print_state_pool)) |
d5cf5324 | 173 | return SCM_CAR (print_state_pool); |
a0adfbf0 | 174 | else |
0a284a4e | 175 | return SCM_BOOL_F; |
c62fbfe1 | 176 | } |
1bbd0b84 GB |
177 | #undef FUNC_NAME |
178 | ||
c62fbfe1 MD |
179 | #endif |
180 | ||
181 | #define PSTATE_SIZE 50L | |
182 | ||
698c0295 | 183 | static SCM |
1bbd0b84 | 184 | make_print_state (void) |
698c0295 | 185 | { |
d5cf5324 DH |
186 | SCM print_state |
187 | = scm_make_struct (scm_print_state_vtable, SCM_INUM0, SCM_EOL); | |
bf685b6d | 188 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 189 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
4057a3e0 | 190 | pstate->ceiling = SCM_SIMPLE_VECTOR_LENGTH (pstate->ref_vect); |
d232520a | 191 | pstate->highlight_objects = SCM_EOL; |
698c0295 MD |
192 | return print_state; |
193 | } | |
1cc91f1b | 194 | |
c62fbfe1 MD |
195 | SCM |
196 | scm_make_print_state () | |
c62fbfe1 | 197 | { |
230d095f | 198 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
199 | |
200 | /* First try to allocate a print state from the pool */ | |
9de87eea | 201 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 202 | if (!scm_is_null (print_state_pool)) |
698c0295 | 203 | { |
d5cf5324 DH |
204 | answer = SCM_CAR (print_state_pool); |
205 | print_state_pool = SCM_CDR (print_state_pool); | |
698c0295 | 206 | } |
9de87eea | 207 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
698c0295 | 208 | |
7888309b | 209 | return scm_is_false (answer) ? make_print_state () : answer; |
c62fbfe1 | 210 | } |
a51ea417 | 211 | |
698c0295 | 212 | void |
6e8d25a6 | 213 | scm_free_print_state (SCM print_state) |
698c0295 MD |
214 | { |
215 | SCM handle; | |
216 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
217 | /* Cleanup before returning print state to pool. | |
218 | * It is better to do it here. Doing it in scm_prin1 | |
219 | * would cost more since that function is called much more | |
220 | * often. | |
221 | */ | |
222 | pstate->fancyp = 0; | |
bb35f315 | 223 | pstate->revealed = 0; |
d232520a | 224 | pstate->highlight_objects = SCM_EOL; |
9de87eea | 225 | scm_i_pthread_mutex_lock (&print_state_mutex); |
16d4699b | 226 | handle = scm_cons (print_state, print_state_pool); |
d5cf5324 | 227 | print_state_pool = handle; |
9de87eea | 228 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
dfd03fb9 MD |
229 | } |
230 | ||
231 | SCM | |
232 | scm_i_port_with_print_state (SCM port, SCM print_state) | |
233 | { | |
234 | if (SCM_UNBNDP (print_state)) | |
235 | { | |
236 | if (SCM_PORT_WITH_PS_P (port)) | |
237 | return port; | |
238 | else | |
239 | print_state = scm_make_print_state (); | |
240 | /* port does not need to be coerced since it doesn't have ps */ | |
241 | } | |
242 | else | |
243 | port = SCM_COERCE_OUTPORT (port); | |
244 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, | |
245 | SCM_UNPACK (scm_cons (port, print_state))); | |
698c0295 | 246 | } |
1cc91f1b | 247 | |
a51ea417 | 248 | static void |
1bbd0b84 | 249 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 250 | { |
4057a3e0 MV |
251 | SCM old_vect = pstate->ref_vect; |
252 | size_t old_size = SCM_SIMPLE_VECTOR_LENGTH (old_vect); | |
253 | size_t new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 254 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
255 | unsigned long int i; |
256 | ||
257 | for (i = 0; i != old_size; ++i) | |
4057a3e0 | 258 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
b17004b8 DH |
259 | |
260 | pstate->ref_vect = new_vect; | |
bf685b6d | 261 | pstate->ceiling = new_size; |
a51ea417 MD |
262 | } |
263 | ||
509759dd MV |
264 | #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i)) |
265 | #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v)) | |
1cc91f1b | 266 | |
a51ea417 | 267 | static void |
34d19ef6 | 268 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
a51ea417 | 269 | { |
c014a02e ML |
270 | register long i; |
271 | long self = pstate->top - 1; | |
c62fbfe1 | 272 | i = pstate->top - 1; |
509759dd | 273 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
c62fbfe1 MD |
274 | { |
275 | while (i > 0) | |
276 | { | |
509759dd MV |
277 | if (!scm_is_pair (PSTATE_STACK_REF (pstate, i-1)) |
278 | || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate, i-1)), | |
279 | SCM_CDR (PSTATE_STACK_REF (pstate, i)))) | |
c62fbfe1 MD |
280 | break; |
281 | --i; | |
282 | } | |
283 | self = i; | |
284 | } | |
285 | for (i = pstate->top - 1; 1; --i) | |
509759dd | 286 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
c62fbfe1 | 287 | break; |
b7f3516f | 288 | scm_putc ('#', port); |
c62fbfe1 | 289 | scm_intprint (i - self, 10, port); |
b7f3516f | 290 | scm_putc ('#', port); |
a51ea417 MD |
291 | } |
292 | ||
6662998f MV |
293 | /* Print the name of a symbol. */ |
294 | ||
475fa9a5 MV |
295 | static int |
296 | quote_keywordish_symbol (const char *str, size_t len) | |
297 | { | |
298 | SCM option; | |
299 | ||
300 | /* LEN is guaranteed to be > 0. | |
301 | */ | |
302 | if (str[0] != ':' && str[len-1] != ':') | |
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 MV |
313 | void |
314 | scm_print_symbol_name (const char *str, size_t len, SCM port) | |
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; |
6662998f | 335 | |
475fa9a5 MV |
336 | if (len == 0 || str[0] == '\'' || str[0] == '`' || str[0] == ',' |
337 | || quote_keywordish_symbol (str, len) | |
338 | || (str[0] == '.' && len == 1) | |
2b829bbb | 339 | || scm_is_true (scm_c_locale_stringn_to_number (str, len, 10))) |
6662998f MV |
340 | { |
341 | scm_lfwrite ("#{", 2, port); | |
342 | weird = 1; | |
343 | } | |
c6b49e89 | 344 | |
6662998f MV |
345 | for (end = pos; end < len; ++end) |
346 | switch (str[end]) | |
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) | |
c6b49e89 | 371 | scm_lfwrite (str + pos, end - pos, port); |
6662998f MV |
372 | { |
373 | char buf[2]; | |
374 | buf[0] = '\\'; | |
375 | buf[1] = str[end]; | |
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) | |
393 | scm_lfwrite (str + pos, end - pos, port); | |
394 | if (weird) | |
395 | scm_lfwrite ("}#", 2, port); | |
396 | } | |
397 | ||
c62fbfe1 | 398 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 399 | */ |
8b840115 MD |
400 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
401 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 402 | |
d232520a MV |
403 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
404 | ||
0f2d19dd | 405 | void |
1bbd0b84 | 406 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
d232520a MV |
407 | { |
408 | if (pstate->fancyp | |
409 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) | |
410 | { | |
81ae25da | 411 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
d232520a | 412 | iprin1 (exp, port, pstate); |
81ae25da | 413 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
d232520a MV |
414 | } |
415 | else | |
416 | iprin1 (exp, port, pstate); | |
417 | } | |
418 | ||
419 | static void | |
420 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) | |
0f2d19dd | 421 | { |
54778cd3 | 422 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 423 | { |
e34f941a DH |
424 | case scm_tc3_closure: |
425 | case scm_tc3_tc7_1: | |
426 | case scm_tc3_tc7_2: | |
427 | /* These tc3 tags should never occur in an immediate value. They are | |
428 | * only used in cell types of non-immediates, i. e. the value returned | |
429 | * by SCM_CELL_TYPE (exp) can use these tags. | |
430 | */ | |
431 | scm_ipruk ("immediate", exp, port); | |
432 | break; | |
433 | case scm_tc3_int_1: | |
434 | case scm_tc3_int_2: | |
e11e83f3 | 435 | scm_intprint (SCM_I_INUM (exp), 10, port); |
0f2d19dd | 436 | break; |
e34f941a | 437 | case scm_tc3_imm24: |
7866a09b | 438 | if (SCM_CHARP (exp)) |
0f2d19dd | 439 | { |
904a78f1 | 440 | scm_t_wchar i = SCM_CHAR (exp); |
77332b21 | 441 | const char *name; |
5ca6dc39 | 442 | |
b7f3516f TT |
443 | if (SCM_WRITINGP (pstate)) |
444 | { | |
445 | scm_puts ("#\\", port); | |
77332b21 MG |
446 | name = scm_i_charname (exp); |
447 | if (name != NULL) | |
448 | scm_puts (name, port); | |
904a78f1 MG |
449 | else if (uc_is_general_category_withtable (i, UC_CATEGORY_MASK_L |
450 | | UC_CATEGORY_MASK_M | |
451 | | UC_CATEGORY_MASK_N | |
452 | | UC_CATEGORY_MASK_P | |
453 | | UC_CATEGORY_MASK_S)) | |
454 | /* Print the character if is graphic character. */ | |
455 | { | |
456 | if (i<256) | |
f7118e35 MG |
457 | /* Character is graphic. Print it. */ |
458 | scm_putc (i, port); | |
904a78f1 | 459 | else |
f7118e35 MG |
460 | /* Character is graphic but unrepresentable in |
461 | this port's encoding. */ | |
462 | scm_intprint (i, 8, port); | |
904a78f1 MG |
463 | } |
464 | else | |
f7118e35 MG |
465 | /* Character is a non-graphical character. */ |
466 | scm_intprint (i, 8, port); | |
b7f3516f TT |
467 | } |
468 | else | |
469 | scm_putc (i, port); | |
0f2d19dd | 470 | } |
a51ea417 | 471 | else if (SCM_IFLAGP (exp) |
e17d318f DH |
472 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
473 | { | |
474 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); | |
475 | } | |
7e6e6b37 | 476 | else if (SCM_ISYMP (exp)) |
e17d318f | 477 | { |
7e6e6b37 | 478 | scm_i_print_isym (exp, port); |
e17d318f | 479 | } |
0f2d19dd JB |
480 | else if (SCM_ILOCP (exp)) |
481 | { | |
7e6e6b37 | 482 | scm_i_print_iloc (exp, port); |
0f2d19dd JB |
483 | } |
484 | else | |
e34f941a DH |
485 | { |
486 | /* unknown immediate value */ | |
487 | scm_ipruk ("immediate", exp, port); | |
488 | } | |
0f2d19dd | 489 | break; |
e34f941a | 490 | case scm_tc3_cons: |
0f2d19dd JB |
491 | switch (SCM_TYP7 (exp)) |
492 | { | |
904a077d MV |
493 | case scm_tcs_struct: |
494 | { | |
495 | ENTER_NESTED_DATA (pstate, exp, circref); | |
496 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) | |
497 | { | |
498 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
499 | if (!print) | |
500 | goto print_struct; | |
dfd03fb9 | 501 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
7663c008 | 502 | pstate->revealed = 1; |
904a077d MV |
503 | scm_call_generic_2 (print, exp, pwps); |
504 | } | |
505 | else | |
506 | { | |
507 | print_struct: | |
508 | scm_print_struct (exp, port, pstate); | |
509 | } | |
510 | EXIT_NESTED_DATA (pstate); | |
511 | } | |
512 | break; | |
0f2d19dd JB |
513 | case scm_tcs_cons_imcar: |
514 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
515 | ENTER_NESTED_DATA (pstate, exp, circref); |
516 | scm_iprlist ("(", exp, ')', port, pstate); | |
517 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
518 | break; |
519 | circref: | |
c62fbfe1 | 520 | print_circref (port, pstate, exp); |
0f2d19dd JB |
521 | break; |
522 | case scm_tcs_closures: | |
7888309b MV |
523 | if (scm_is_false (scm_procedure_p (SCM_PRINT_CLOSURE)) |
524 | || scm_is_false (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 525 | exp, port, pstate))) |
726d810a DH |
526 | { |
527 | SCM formals = SCM_CLOSURE_FORMALS (exp); | |
528 | scm_puts ("#<procedure", port); | |
529 | scm_putc (' ', port); | |
530 | scm_iprin1 (scm_procedure_name (exp), port, pstate); | |
531 | scm_putc (' ', port); | |
532 | if (SCM_PRINT_SOURCE_P) | |
533 | { | |
534 | SCM env = SCM_ENV (exp); | |
535 | SCM xenv = SCM_EXTEND_ENV (formals, SCM_EOL, env); | |
9fcf3cbb | 536 | SCM src = scm_i_unmemocopy_body (SCM_CODE (exp), xenv); |
726d810a DH |
537 | ENTER_NESTED_DATA (pstate, exp, circref); |
538 | scm_iprin1 (src, port, pstate); | |
539 | EXIT_NESTED_DATA (pstate); | |
540 | } | |
541 | else | |
542 | scm_iprin1 (formals, port, pstate); | |
b7f3516f | 543 | scm_putc ('>', port); |
726d810a | 544 | } |
0f2d19dd | 545 | break; |
534c55a9 DH |
546 | case scm_tc7_number: |
547 | switch SCM_TYP16 (exp) { | |
548 | case scm_tc16_big: | |
549 | scm_bigprint (exp, port, pstate); | |
550 | break; | |
551 | case scm_tc16_real: | |
552 | scm_print_real (exp, port, pstate); | |
553 | break; | |
554 | case scm_tc16_complex: | |
555 | scm_print_complex (exp, port, pstate); | |
556 | break; | |
f92e85f7 MV |
557 | case scm_tc16_fraction: |
558 | scm_i_print_fraction (exp, port, pstate); | |
559 | break; | |
534c55a9 DH |
560 | } |
561 | break; | |
9c44cd45 MG |
562 | case scm_tc7_string: |
563 | if (SCM_WRITINGP (pstate)) | |
564 | { | |
565 | size_t i, j, len; | |
566 | static char const hex[] = "0123456789abcdef"; | |
567 | char buf[8]; | |
5ca6dc39 | 568 | |
9c44cd45 MG |
569 | |
570 | scm_putc ('"', port); | |
571 | len = scm_i_string_length (exp); | |
572 | for (i = 0; i < len; ++i) | |
573 | { | |
574 | scm_t_wchar ch = scm_i_string_ref (exp, i); | |
575 | int printed = 0; | |
576 | ||
577 | if (ch == ' ' || ch == '\n') | |
578 | { | |
579 | scm_putc (ch, port); | |
580 | printed = 1; | |
581 | } | |
582 | else if (ch == '"' || ch == '\\') | |
583 | { | |
584 | scm_putc ('\\', port); | |
585 | scm_charprint (ch, port); | |
586 | printed = 1; | |
587 | } | |
588 | else | |
589 | if (uc_is_general_category_withtable | |
590 | (ch, | |
591 | UC_CATEGORY_MASK_L | UC_CATEGORY_MASK_M | | |
592 | UC_CATEGORY_MASK_N | UC_CATEGORY_MASK_P | | |
593 | UC_CATEGORY_MASK_S)) | |
594 | { | |
595 | /* Print the character since it is a graphic | |
596 | character. */ | |
597 | scm_t_wchar *wbuf; | |
598 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
599 | char *buf; | |
600 | size_t len; | |
601 | ||
602 | wbuf[0] = ch; | |
603 | ||
604 | buf = u32_conv_to_encoding ("ISO-8859-1", | |
605 | iconveh_error, | |
606 | (scm_t_uint32 *) wbuf, | |
607 | 1, NULL, NULL, &len); | |
608 | if (buf != NULL) | |
609 | { | |
610 | /* Character is graphic and representable in | |
611 | this encoding. Print it. */ | |
612 | scm_lfwrite_str (wstr, port); | |
613 | free (buf); | |
614 | printed = 1; | |
615 | } | |
616 | } | |
617 | ||
618 | if (!printed) | |
619 | { | |
620 | /* Character is graphic but unrepresentable in | |
621 | this port's encoding or is not graphic. */ | |
622 | if (ch <= 0xFF) | |
623 | { | |
624 | buf[0] = '\\'; | |
625 | buf[1] = 'x'; | |
626 | buf[2] = hex[ch / 16]; | |
627 | buf[3] = hex[ch % 16]; | |
628 | scm_lfwrite (buf, 4, port); | |
629 | } | |
630 | else if (ch <= 0xFFFF) | |
631 | { | |
632 | buf[0] = '\\'; | |
633 | buf[1] = 'u'; | |
634 | buf[2] = hex[(ch & 0xF000) >> 12]; | |
635 | buf[3] = hex[(ch & 0xF00) >> 8]; | |
636 | buf[4] = hex[(ch & 0xF0) >> 4]; | |
637 | buf[5] = hex[(ch & 0xF)]; | |
638 | scm_lfwrite (buf, 6, port); | |
639 | j = i + 1; | |
640 | } | |
641 | else if (ch > 0xFFFF) | |
642 | { | |
643 | buf[0] = '\\'; | |
644 | buf[1] = 'U'; | |
645 | buf[2] = hex[(ch & 0xF00000) >> 20]; | |
646 | buf[3] = hex[(ch & 0xF0000) >> 16]; | |
647 | buf[4] = hex[(ch & 0xF000) >> 12]; | |
648 | buf[5] = hex[(ch & 0xF00) >> 8]; | |
649 | buf[6] = hex[(ch & 0xF0) >> 4]; | |
650 | buf[7] = hex[(ch & 0xF)]; | |
651 | scm_lfwrite (buf, 8, port); | |
652 | j = i + 1; | |
653 | } | |
654 | } | |
655 | } | |
656 | scm_putc ('"', port); | |
657 | scm_remember_upto_here_1 (exp); | |
658 | } | |
659 | else | |
660 | scm_lfwrite (scm_i_string_chars (exp), scm_i_string_length (exp), | |
661 | port); | |
662 | scm_remember_upto_here_1 (exp); | |
663 | break; | |
28b06554 | 664 | case scm_tc7_symbol: |
cc95e00a | 665 | if (scm_i_symbol_is_interned (exp)) |
9ff28a13 | 666 | { |
cc95e00a | 667 | scm_print_symbol_name (scm_i_symbol_chars (exp), |
9c44cd45 | 668 | scm_i_symbol_length (exp), port); |
9ff28a13 MV |
669 | scm_remember_upto_here_1 (exp); |
670 | } | |
671 | else | |
672 | { | |
673 | scm_puts ("#<uninterned-symbol ", port); | |
cc95e00a MV |
674 | scm_print_symbol_name (scm_i_symbol_chars (exp), |
675 | scm_i_symbol_length (exp), | |
9ff28a13 MV |
676 | port); |
677 | scm_putc (' ', port); | |
0345e278 | 678 | scm_uintprint (SCM_UNPACK (exp), 16, port); |
9ff28a13 MV |
679 | scm_putc ('>', port); |
680 | } | |
6662998f | 681 | break; |
e5aca4b5 MV |
682 | case scm_tc7_variable: |
683 | scm_i_variable_print (exp, port, pstate); | |
684 | break; | |
0f2d19dd | 685 | case scm_tc7_wvect: |
c62fbfe1 | 686 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 687 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 688 | scm_puts ("#wh(", port); |
0f2d19dd | 689 | else |
b7f3516f | 690 | scm_puts ("#w(", port); |
0f2d19dd JB |
691 | goto common_vector_printer; |
692 | ||
693 | case scm_tc7_vector: | |
c62fbfe1 | 694 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 695 | scm_puts ("#(", port); |
0f2d19dd | 696 | common_vector_printer: |
9fbaf27c | 697 | { |
c014a02e | 698 | register long i; |
4057a3e0 | 699 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 700 | int cutp = 0; |
4057a3e0 MV |
701 | if (pstate->fancyp |
702 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) | |
9fbaf27c MD |
703 | { |
704 | last = pstate->length - 1; | |
705 | cutp = 1; | |
706 | } | |
707 | for (i = 0; i < last; ++i) | |
708 | { | |
709 | /* CHECK_INTS; */ | |
4057a3e0 | 710 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); |
b7f3516f | 711 | scm_putc (' ', port); |
9fbaf27c MD |
712 | } |
713 | if (i == last) | |
714 | { | |
715 | /* CHECK_INTS; */ | |
4057a3e0 | 716 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); |
9fbaf27c MD |
717 | } |
718 | if (cutp) | |
b7f3516f TT |
719 | scm_puts (" ...", port); |
720 | scm_putc (')', port); | |
9fbaf27c | 721 | } |
c62fbfe1 | 722 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 723 | break; |
0f2d19dd | 724 | case scm_tcs_subrs: |
f76af603 | 725 | scm_puts (SCM_SUBR_GENERIC (exp) |
9de33deb MD |
726 | ? "#<primitive-generic " |
727 | : "#<primitive-procedure ", | |
728 | port); | |
ce471ab8 | 729 | scm_puts (scm_i_symbol_chars (SCM_SUBR_NAME (exp)), port); |
b7f3516f | 730 | scm_putc ('>', port); |
0f2d19dd | 731 | break; |
e20d7001 | 732 | |
c180dfd3 MD |
733 | case scm_tc7_pws: |
734 | scm_puts ("#<procedure-with-setter", port); | |
735 | { | |
736 | SCM name = scm_procedure_name (exp); | |
7888309b | 737 | if (scm_is_true (name)) |
c180dfd3 MD |
738 | { |
739 | scm_putc (' ', port); | |
b24b5e13 | 740 | scm_display (name, port); |
c180dfd3 MD |
741 | } |
742 | } | |
743 | scm_putc ('>', port); | |
744 | break; | |
0f2d19dd | 745 | case scm_tc7_port: |
5ca6dc39 JB |
746 | { |
747 | register long i = SCM_PTOBNUM (exp); | |
748 | if (i < scm_numptob | |
749 | && scm_ptobs[i].print | |
750 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 751 | break; |
5ca6dc39 JB |
752 | goto punk; |
753 | } | |
754 | case scm_tc7_smob: | |
7a7f7c53 DH |
755 | ENTER_NESTED_DATA (pstate, exp, circref); |
756 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); | |
757 | EXIT_NESTED_DATA (pstate); | |
758 | break; | |
0f2d19dd | 759 | default: |
a51ea417 MD |
760 | punk: |
761 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
762 | } |
763 | } | |
764 | } | |
765 | ||
c62fbfe1 MD |
766 | /* Print states are necessary for circular reference safe printing. |
767 | * They are also expensive to allocate. Therefore print states are | |
768 | * kept in a pool so that they can be reused. | |
769 | */ | |
1cc91f1b | 770 | |
bb35f315 MV |
771 | /* The PORT argument can also be a print-state/port pair, which will |
772 | * then be used instead of allocating a new print state. This is | |
773 | * useful for continuing a chain of print calls from Scheme. */ | |
774 | ||
a51ea417 | 775 | void |
1bbd0b84 | 776 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 777 | { |
c4f37e80 MV |
778 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
779 | SCM pstate_scm; | |
c62fbfe1 | 780 | scm_print_state *pstate; |
15635be5 | 781 | int old_writingp; |
c62fbfe1 | 782 | |
bb35f315 MV |
783 | /* If PORT is a print-state/port pair, use that. Else create a new |
784 | print-state. */ | |
c4f37e80 | 785 | |
0c95b57d | 786 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 787 | { |
52235e71 MD |
788 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
789 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
790 | } |
791 | else | |
c62fbfe1 | 792 | { |
c4f37e80 | 793 | /* First try to allocate a print state from the pool */ |
9de87eea | 794 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d2e53ed6 | 795 | if (!scm_is_null (print_state_pool)) |
c4f37e80 | 796 | { |
d5cf5324 DH |
797 | handle = print_state_pool; |
798 | print_state_pool = SCM_CDR (print_state_pool); | |
c4f37e80 | 799 | } |
9de87eea | 800 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
7888309b | 801 | if (scm_is_false (handle)) |
d5cf5324 | 802 | handle = scm_list_1 (make_print_state ()); |
c4f37e80 | 803 | pstate_scm = SCM_CAR (handle); |
c62fbfe1 | 804 | } |
c62fbfe1 | 805 | |
c4f37e80 | 806 | pstate = SCM_PRINT_STATE (pstate_scm); |
15635be5 | 807 | old_writingp = pstate->writingp; |
c62fbfe1 MD |
808 | pstate->writingp = writingp; |
809 | scm_iprin1 (exp, port, pstate); | |
15635be5 | 810 | pstate->writingp = old_writingp; |
c62fbfe1 | 811 | |
bb35f315 MV |
812 | /* Return print state to pool if it has been created above and |
813 | hasn't escaped to Scheme. */ | |
814 | ||
7888309b | 815 | if (scm_is_true (handle) && !pstate->revealed) |
c4f37e80 | 816 | { |
9de87eea | 817 | scm_i_pthread_mutex_lock (&print_state_mutex); |
d5cf5324 DH |
818 | SCM_SETCDR (handle, print_state_pool); |
819 | print_state_pool = handle; | |
9de87eea | 820 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
c4f37e80 | 821 | } |
a51ea417 MD |
822 | } |
823 | ||
9c44cd45 MG |
824 | /* Print a character. |
825 | */ | |
826 | void | |
827 | scm_charprint (scm_t_uint32 ch, SCM port) | |
828 | { | |
829 | scm_t_wchar *wbuf; | |
830 | SCM wstr = scm_i_make_wide_string (1, &wbuf); | |
831 | ||
832 | wbuf[0] = ch; | |
833 | scm_lfwrite_str (wstr, port); | |
834 | } | |
0f2d19dd JB |
835 | |
836 | /* Print an integer. | |
837 | */ | |
1cc91f1b | 838 | |
0f2d19dd | 839 | void |
a406c9e9 | 840 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
0f2d19dd JB |
841 | { |
842 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 843 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
844 | } |
845 | ||
a406c9e9 MV |
846 | void |
847 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) | |
848 | { | |
849 | char num_buf[SCM_INTBUFLEN]; | |
850 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); | |
851 | } | |
852 | ||
0f2d19dd JB |
853 | /* Print an object of unrecognized type. |
854 | */ | |
1cc91f1b | 855 | |
0f2d19dd | 856 | void |
1bbd0b84 | 857 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 858 | { |
b7f3516f TT |
859 | scm_puts ("#<unknown-", port); |
860 | scm_puts (hdr, port); | |
c8a1bdc4 | 861 | if (scm_in_heap_p (ptr)) |
0f2d19dd | 862 | { |
b7f3516f | 863 | scm_puts (" (0x", port); |
0345e278 | 864 | scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 865 | scm_puts (" . 0x", port); |
0345e278 | 866 | scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 867 | scm_puts (") @", port); |
0f2d19dd | 868 | } |
b7f3516f | 869 | scm_puts (" 0x", port); |
0345e278 | 870 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 871 | scm_putc ('>', port); |
0f2d19dd JB |
872 | } |
873 | ||
1cc91f1b | 874 | |
904a077d | 875 | /* Print a list. |
22a52da1 | 876 | */ |
0f2d19dd | 877 | void |
34d19ef6 | 878 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
0f2d19dd | 879 | { |
c62fbfe1 | 880 | register SCM hare, tortoise; |
c014a02e | 881 | long floor = pstate->top - 2; |
b7f3516f | 882 | scm_puts (hdr, port); |
0f2d19dd | 883 | /* CHECK_INTS; */ |
c62fbfe1 MD |
884 | if (pstate->fancyp) |
885 | goto fancy_printing; | |
886 | ||
887 | /* Run a hare and tortoise so that total time complexity will be | |
888 | O(depth * N) instead of O(N^2). */ | |
889 | hare = SCM_CDR (exp); | |
890 | tortoise = exp; | |
d2e53ed6 | 891 | while (scm_is_pair (hare)) |
c62fbfe1 | 892 | { |
bc36d050 | 893 | if (scm_is_eq (hare, tortoise)) |
c62fbfe1 MD |
894 | goto fancy_printing; |
895 | hare = SCM_CDR (hare); | |
d2e53ed6 | 896 | if (!scm_is_pair (hare)) |
c62fbfe1 MD |
897 | break; |
898 | hare = SCM_CDR (hare); | |
899 | tortoise = SCM_CDR (tortoise); | |
900 | } | |
901 | ||
902 | /* No cdr cycles intrinsic to this list */ | |
903 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
d2e53ed6 | 904 | for (exp = SCM_CDR (exp); scm_is_pair (exp); exp = SCM_CDR (exp)) |
0f2d19dd | 905 | { |
c014a02e | 906 | register long i; |
5ca6dc39 | 907 | |
c62fbfe1 | 908 | for (i = floor; i >= 0; --i) |
509759dd | 909 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
910 | goto circref; |
911 | PUSH_REF (pstate, exp); | |
b7f3516f | 912 | scm_putc (' ', port); |
0f2d19dd | 913 | /* CHECK_INTS; */ |
c62fbfe1 | 914 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd | 915 | } |
c96d76b8 | 916 | if (!SCM_NULL_OR_NIL_P (exp)) |
0f2d19dd | 917 | { |
b7f3516f | 918 | scm_puts (" . ", port); |
c62fbfe1 | 919 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 920 | } |
c62fbfe1 | 921 | |
a51ea417 | 922 | end: |
b7f3516f | 923 | scm_putc (tlr, port); |
c62fbfe1 | 924 | pstate->top = floor + 2; |
a51ea417 | 925 | return; |
c62fbfe1 MD |
926 | |
927 | fancy_printing: | |
928 | { | |
c014a02e | 929 | long n = pstate->length; |
c62fbfe1 MD |
930 | |
931 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
932 | exp = SCM_CDR (exp); --n; | |
d2e53ed6 | 933 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
c62fbfe1 | 934 | { |
c014a02e | 935 | register unsigned long i; |
5ca6dc39 | 936 | |
c62fbfe1 | 937 | for (i = 0; i < pstate->top; ++i) |
509759dd | 938 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
c62fbfe1 MD |
939 | goto fancy_circref; |
940 | if (pstate->fancyp) | |
941 | { | |
942 | if (n == 0) | |
943 | { | |
b7f3516f | 944 | scm_puts (" ...", port); |
c62fbfe1 MD |
945 | goto skip_tail; |
946 | } | |
947 | else | |
948 | --n; | |
949 | } | |
950 | PUSH_REF(pstate, exp); | |
951 | ++pstate->list_offset; | |
b7f3516f | 952 | scm_putc (' ', port); |
c62fbfe1 MD |
953 | /* CHECK_INTS; */ |
954 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
955 | } | |
956 | } | |
c96d76b8 | 957 | if (!SCM_NULL_OR_NIL_P (exp)) |
c62fbfe1 | 958 | { |
b7f3516f | 959 | scm_puts (" . ", port); |
c62fbfe1 MD |
960 | scm_iprin1 (exp, port, pstate); |
961 | } | |
962 | skip_tail: | |
963 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 964 | goto end; |
a51ea417 | 965 | |
c62fbfe1 MD |
966 | fancy_circref: |
967 | pstate->list_offset -= pstate->top - floor - 2; | |
968 | ||
969 | circref: | |
b7f3516f | 970 | scm_puts (" . ", port); |
c62fbfe1 MD |
971 | print_circref (port, pstate, exp); |
972 | goto end; | |
0f2d19dd JB |
973 | } |
974 | ||
975 | \f | |
976 | ||
bb35f315 MV |
977 | int |
978 | scm_valid_oport_value_p (SCM val) | |
979 | { | |
368cf54d GB |
980 | return (SCM_OPOUTPORTP (val) |
981 | || (SCM_PORT_WITH_PS_P (val) | |
982 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
983 | } |
984 | ||
8b840115 | 985 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 986 | |
0f2d19dd | 987 | SCM |
1bbd0b84 | 988 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
989 | { |
990 | if (SCM_UNBNDP (port)) | |
9de87eea | 991 | port = scm_current_output_port (); |
3eb7e6ee JB |
992 | |
993 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 994 | |
a51ea417 | 995 | scm_prin1 (obj, port, 1); |
23d72566 | 996 | #if 0 |
0f2d19dd JB |
997 | #ifdef HAVE_PIPE |
998 | # ifdef EPIPE | |
999 | if (EPIPE == errno) | |
1000 | scm_close_port (port); | |
1001 | # endif | |
23d72566 | 1002 | #endif |
0f2d19dd JB |
1003 | #endif |
1004 | return SCM_UNSPECIFIED; | |
1005 | } | |
1006 | ||
1007 | ||
8b840115 | 1008 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 1009 | |
0f2d19dd | 1010 | SCM |
1bbd0b84 | 1011 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
1012 | { |
1013 | if (SCM_UNBNDP (port)) | |
9de87eea | 1014 | port = scm_current_output_port (); |
3eb7e6ee JB |
1015 | |
1016 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 1017 | |
a51ea417 | 1018 | scm_prin1 (obj, port, 0); |
23d72566 | 1019 | #if 0 |
0f2d19dd JB |
1020 | #ifdef HAVE_PIPE |
1021 | # ifdef EPIPE | |
1022 | if (EPIPE == errno) | |
1023 | scm_close_port (port); | |
1024 | # endif | |
23d72566 | 1025 | #endif |
0f2d19dd JB |
1026 | #endif |
1027 | return SCM_UNSPECIFIED; | |
1028 | } | |
1029 | ||
70d63753 GB |
1030 | |
1031 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
1032 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
1033 | "Write @var{message} to @var{destination}, defaulting to\n" |
1034 | "the current output port.\n" | |
1035 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
1036 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
1037 | "the escapes are replaced with corresponding members of\n" | |
1038 | "@var{ARGS}:\n" | |
1039 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
1040 | "using @code{write}.\n" | |
1041 | "If @var{destination} is @code{#t}, then use the current output\n" | |
1042 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
1043 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
1044 | #define FUNC_NAME s_scm_simple_format |
1045 | { | |
dfd03fb9 | 1046 | SCM port, answer = SCM_UNSPECIFIED; |
70d63753 GB |
1047 | int fReturnString = 0; |
1048 | int writingp; | |
cc95e00a MV |
1049 | const char *start; |
1050 | const char *end; | |
1051 | const char *p; | |
70d63753 | 1052 | |
bc36d050 | 1053 | if (scm_is_eq (destination, SCM_BOOL_T)) |
daba1a71 | 1054 | { |
9de87eea | 1055 | destination = port = scm_current_output_port (); |
daba1a71 | 1056 | } |
7888309b | 1057 | else if (scm_is_false (destination)) |
daba1a71 MD |
1058 | { |
1059 | fReturnString = 1; | |
dfd03fb9 MD |
1060 | port = scm_mkstrport (SCM_INUM0, |
1061 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
1062 | SCM_OPN | SCM_WRTNG, | |
1063 | FUNC_NAME); | |
1064 | destination = port; | |
daba1a71 MD |
1065 | } |
1066 | else | |
1067 | { | |
1068 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
dfd03fb9 | 1069 | port = SCM_COERCE_OUTPORT (destination); |
daba1a71 MD |
1070 | } |
1071 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1072 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1073 | |
cc95e00a MV |
1074 | start = scm_i_string_chars (message); |
1075 | end = start + scm_i_string_length (message); | |
b24b5e13 | 1076 | for (p = start; p != end; ++p) |
70d63753 GB |
1077 | if (*p == '~') |
1078 | { | |
b24b5e13 | 1079 | if (++p == end) |
6662998f MV |
1080 | break; |
1081 | ||
1082 | switch (*p) | |
1083 | { | |
1084 | case 'A': case 'a': | |
1085 | writingp = 0; | |
1086 | break; | |
1087 | case 'S': case 's': | |
1088 | writingp = 1; | |
1089 | break; | |
1090 | case '~': | |
dfd03fb9 | 1091 | scm_lfwrite (start, p - start, port); |
6662998f MV |
1092 | start = p + 1; |
1093 | continue; | |
1094 | case '%': | |
dfd03fb9 MD |
1095 | scm_lfwrite (start, p - start - 1, port); |
1096 | scm_newline (port); | |
6662998f MV |
1097 | start = p + 1; |
1098 | continue; | |
1099 | default: | |
1afff620 KN |
1100 | SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead", |
1101 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f MV |
1102 | |
1103 | } | |
70d63753 | 1104 | |
6662998f | 1105 | |
d2e53ed6 | 1106 | if (!scm_is_pair (args)) |
1afff620 KN |
1107 | SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A", |
1108 | scm_list_1 (SCM_MAKE_CHAR (*p))); | |
6662998f | 1109 | |
dfd03fb9 MD |
1110 | scm_lfwrite (start, p - start - 1, port); |
1111 | /* we pass destination here */ | |
70d63753 GB |
1112 | scm_prin1 (SCM_CAR (args), destination, writingp); |
1113 | args = SCM_CDR (args); | |
1114 | start = p + 1; | |
1115 | } | |
6662998f | 1116 | |
dfd03fb9 | 1117 | scm_lfwrite (start, p - start, port); |
bc36d050 | 1118 | if (!scm_is_eq (args, SCM_EOL)) |
1afff620 KN |
1119 | SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments", |
1120 | scm_list_1 (scm_length (args))); | |
70d63753 GB |
1121 | |
1122 | if (fReturnString) | |
1123 | answer = scm_strport_to_string (destination); | |
1124 | ||
daba1a71 | 1125 | return scm_return_first (answer, message); |
70d63753 GB |
1126 | } |
1127 | #undef FUNC_NAME | |
1128 | ||
1129 | ||
3b3b36dd | 1130 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1131 | (SCM port), |
8f85c0c6 NJ |
1132 | "Send a newline to @var{port}.\n" |
1133 | "If @var{port} is omitted, send to the current output port.") | |
1bbd0b84 | 1134 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1135 | { |
1136 | if (SCM_UNBNDP (port)) | |
9de87eea | 1137 | port = scm_current_output_port (); |
3eb7e6ee | 1138 | |
34d19ef6 | 1139 | SCM_VALIDATE_OPORT_VALUE (1, port); |
bb35f315 | 1140 | |
0ef4ae82 | 1141 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1142 | return SCM_UNSPECIFIED; |
1143 | } | |
1bbd0b84 | 1144 | #undef FUNC_NAME |
0f2d19dd | 1145 | |
3b3b36dd | 1146 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1147 | (SCM chr, SCM port), |
eca65e90 | 1148 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1149 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1150 | { |
1151 | if (SCM_UNBNDP (port)) | |
9de87eea | 1152 | port = scm_current_output_port (); |
3eb7e6ee | 1153 | |
34d19ef6 HWN |
1154 | SCM_VALIDATE_CHAR (1, chr); |
1155 | SCM_VALIDATE_OPORT_VALUE (2, port); | |
bb35f315 | 1156 | |
7866a09b | 1157 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
23d72566 | 1158 | #if 0 |
0f2d19dd JB |
1159 | #ifdef HAVE_PIPE |
1160 | # ifdef EPIPE | |
1161 | if (EPIPE == errno) | |
1162 | scm_close_port (port); | |
1163 | # endif | |
23d72566 | 1164 | #endif |
0f2d19dd JB |
1165 | #endif |
1166 | return SCM_UNSPECIFIED; | |
1167 | } | |
1bbd0b84 | 1168 | #undef FUNC_NAME |
0f2d19dd | 1169 | |
0f2d19dd JB |
1170 | \f |
1171 | ||
bb35f315 | 1172 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1173 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1174 | * containing PORT and PSTATE. This object can be used as the port for | |
1175 | * display/write etc to continue the current print chain. The REVEALED | |
1176 | * field of PSTATE is set to true to indicate that the print state has | |
1177 | * escaped to Scheme and thus has to be freed by the GC. | |
1178 | */ | |
1179 | ||
92c2555f | 1180 | scm_t_bits scm_tc16_port_with_ps; |
c19bc088 MD |
1181 | |
1182 | /* Print exactly as the port itself would */ | |
1183 | ||
1184 | static int | |
e841c3e0 | 1185 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1186 | { |
1187 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1188 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1189 | } | |
c4f37e80 MV |
1190 | |
1191 | SCM | |
1bbd0b84 | 1192 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1193 | { |
bb35f315 | 1194 | pstate->revealed = 1; |
dfd03fb9 MD |
1195 | return scm_call_2 (proc, exp, |
1196 | scm_i_port_with_print_state (port, pstate->handle)); | |
c19bc088 MD |
1197 | } |
1198 | ||
dfd03fb9 | 1199 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 1, 1, 0, |
1bbd0b84 | 1200 | (SCM port, SCM pstate), |
71331188 | 1201 | "Create a new port which behaves like @var{port}, but with an\n" |
dfd03fb9 MD |
1202 | "included print state @var{pstate}. @var{pstate} is optional.\n" |
1203 | "If @var{pstate} isn't supplied and @var{port} already has\n" | |
1204 | "a print state, the old print state is reused.") | |
1bbd0b84 | 1205 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 | 1206 | { |
34d19ef6 | 1207 | SCM_VALIDATE_OPORT_VALUE (1, port); |
dfd03fb9 MD |
1208 | if (!SCM_UNBNDP (pstate)) |
1209 | SCM_VALIDATE_PRINTSTATE (2, pstate); | |
1210 | return scm_i_port_with_print_state (port, pstate); | |
c19bc088 | 1211 | } |
1bbd0b84 | 1212 | #undef FUNC_NAME |
c19bc088 | 1213 | |
a1ec6916 | 1214 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1215 | (SCM port), |
71331188 MG |
1216 | "Return the print state of the port @var{port}. If @var{port}\n" |
1217 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1218 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1219 | { |
368cf54d GB |
1220 | if (SCM_PORT_WITH_PS_P (port)) |
1221 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1222 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1223 | return SCM_BOOL_F; |
276dd677 | 1224 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1225 | } |
1bbd0b84 | 1226 | #undef FUNC_NAME |
bb35f315 | 1227 | |
c4f37e80 | 1228 | \f |
1cc91f1b | 1229 | |
0f2d19dd JB |
1230 | void |
1231 | scm_init_print () | |
0f2d19dd | 1232 | { |
c19bc088 | 1233 | SCM vtable, layout, type; |
d5cf5324 | 1234 | |
62560650 | 1235 | scm_init_opts (scm_print_options, scm_print_opts); |
d5cf5324 | 1236 | |
81ae25da MV |
1237 | scm_print_options (scm_list_4 (scm_from_locale_symbol ("highlight-prefix"), |
1238 | scm_from_locale_string ("{"), | |
1239 | scm_from_locale_symbol ("highlight-suffix"), | |
1240 | scm_from_locale_string ("}"))); | |
1241 | ||
d5cf5324 DH |
1242 | scm_gc_register_root (&print_state_pool); |
1243 | scm_gc_register_root (&scm_print_state_vtable); | |
3ce4544c | 1244 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
cc95e00a MV |
1245 | layout = |
1246 | scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT)); | |
1afff620 | 1247 | type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout)); |
cc95e00a | 1248 | scm_set_struct_vtable_name_x (type, scm_from_locale_symbol ("print-state")); |
bb35f315 | 1249 | scm_print_state_vtable = type; |
c4f37e80 | 1250 | |
c19bc088 MD |
1251 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1252 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1253 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1254 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
81ae25da | 1255 | |
a0599745 | 1256 | #include "libguile/print.x" |
475fa9a5 MV |
1257 | |
1258 | scm_print_opts[SCM_PRINT_KEYWORD_STYLE_I].val = SCM_UNPACK (sym_reader); | |
0f2d19dd | 1259 | } |
89e00824 ML |
1260 | |
1261 | /* | |
1262 | Local Variables: | |
1263 | c-file-style: "gnu" | |
1264 | End: | |
1265 | */ |