Commit | Line | Data |
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f2c9fcb0 | 1 | /* Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
a0599745 MD |
48 | #include "libguile/_scm.h" |
49 | #include "libguile/chars.h" | |
a002f1a2 | 50 | #include "libguile/continuations.h" |
a0599745 MD |
51 | #include "libguile/smob.h" |
52 | #include "libguile/eval.h" | |
53 | #include "libguile/macros.h" | |
54 | #include "libguile/procprop.h" | |
55 | #include "libguile/read.h" | |
56 | #include "libguile/weaks.h" | |
57 | #include "libguile/unif.h" | |
58 | #include "libguile/alist.h" | |
59 | #include "libguile/struct.h" | |
60 | #include "libguile/objects.h" | |
61 | #include "libguile/ports.h" | |
62 | #include "libguile/root.h" | |
63 | #include "libguile/strings.h" | |
64 | #include "libguile/strports.h" | |
65 | #include "libguile/vectors.h" | |
66 | ||
67 | #include "libguile/validate.h" | |
68 | #include "libguile/print.h" | |
0f2d19dd JB |
69 | \f |
70 | ||
71 | /* {Names of immediate symbols} | |
72 | * | |
73 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. | |
74 | */ | |
75 | ||
76 | char *scm_isymnames[] = | |
77 | { | |
78 | /* This table must agree with the declarations */ | |
79 | "#@and", | |
80 | "#@begin", | |
81 | "#@case", | |
82 | "#@cond", | |
83 | "#@do", | |
84 | "#@if", | |
85 | "#@lambda", | |
86 | "#@let", | |
87 | "#@let*", | |
88 | "#@letrec", | |
89 | "#@or", | |
90 | "#@quote", | |
91 | "#@set!", | |
92 | "#@define", | |
93 | #if 0 | |
94 | "#@literal-variable-ref", | |
95 | "#@literal-variable-set!", | |
96 | #endif | |
97 | "#@apply", | |
98 | "#@call-with-current-continuation", | |
99 | ||
100 | /* user visible ISYMS */ | |
101 | /* other keywords */ | |
102 | /* Flags */ | |
103 | ||
104 | "#f", | |
105 | "#t", | |
106 | "#<undefined>", | |
107 | "#<eof>", | |
108 | "()", | |
4df91bd6 MD |
109 | "#<unspecified>", |
110 | "#@dispatch", | |
43c667e9 MD |
111 | "#@slot-ref", |
112 | "#@slot-set!", | |
159500fb | 113 | |
159500fb MD |
114 | /* Multi-language support */ |
115 | ||
116 | "#@nil-cond", | |
117 | "#@nil-ify", | |
118 | "#@t-ify", | |
119 | "#@0-cond", | |
120 | "#@0-ify", | |
121 | "#@1-ify", | |
ccd0e478 MD |
122 | "#@bind", |
123 | ||
5623a9b4 MD |
124 | "#@delay", |
125 | ||
126 | "#<unbound>" | |
0f2d19dd JB |
127 | }; |
128 | ||
e6e4c9af | 129 | scm_option scm_print_opts[] = { |
f1267706 | 130 | { SCM_OPTION_SCM, "closure-hook", SCM_UNPACK(SCM_BOOL_F), |
84f6a34a MD |
131 | "Hook for printing closures." }, |
132 | { SCM_OPTION_BOOLEAN, "source", 0, | |
133 | "Print closures with source." } | |
e6e4c9af MD |
134 | }; |
135 | ||
a1ec6916 | 136 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
1bbd0b84 | 137 | (SCM setting), |
71331188 MG |
138 | "Option interface for the print options. Instead of using\n" |
139 | "this procedure directly, use the procedures @code{print-enable},\n" | |
140 | "@code{print-disable}, @code{print-set!} and @var{print-options}.") | |
1bbd0b84 | 141 | #define FUNC_NAME s_scm_print_options |
e6e4c9af | 142 | { |
a51ea417 | 143 | SCM ans = scm_options (setting, |
b7ff98dd MD |
144 | scm_print_opts, |
145 | SCM_N_PRINT_OPTIONS, | |
1bbd0b84 | 146 | FUNC_NAME); |
e6e4c9af MD |
147 | return ans; |
148 | } | |
1bbd0b84 | 149 | #undef FUNC_NAME |
e6e4c9af | 150 | |
0f2d19dd JB |
151 | \f |
152 | /* {Printing of Scheme Objects} | |
153 | */ | |
154 | ||
a51ea417 | 155 | /* Detection of circular references. |
c62fbfe1 MD |
156 | * |
157 | * Due to other constraints in the implementation, this code has bad | |
5d46ebe3 MD |
158 | * time complexity (O (depth * N)), The printer code can be |
159 | * rewritten to be O(N). | |
a51ea417 | 160 | */ |
c62fbfe1 | 161 | #define PUSH_REF(pstate, obj) \ |
1bbd0b84 | 162 | do { \ |
c62fbfe1 MD |
163 | pstate->ref_stack[pstate->top++] = (obj); \ |
164 | if (pstate->top == pstate->ceiling) \ | |
165 | grow_ref_stack (pstate); \ | |
1bbd0b84 | 166 | } while(0) |
a51ea417 | 167 | |
c62fbfe1 | 168 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
1bbd0b84 | 169 | do { \ |
5ca6dc39 | 170 | register unsigned long i; \ |
c62fbfe1 | 171 | for (i = 0; i < pstate->top; ++i) \ |
230d095f | 172 | if (SCM_EQ_P (pstate->ref_stack[i], (obj))) \ |
c62fbfe1 MD |
173 | goto label; \ |
174 | if (pstate->fancyp) \ | |
175 | { \ | |
176 | if (pstate->top - pstate->list_offset >= pstate->level) \ | |
177 | { \ | |
b7f3516f | 178 | scm_putc ('#', port); \ |
c62fbfe1 MD |
179 | return; \ |
180 | } \ | |
181 | } \ | |
182 | PUSH_REF(pstate, obj); \ | |
1bbd0b84 | 183 | } while(0) |
a51ea417 | 184 | |
c62fbfe1 MD |
185 | #define EXIT_NESTED_DATA(pstate) { --pstate->top; } |
186 | ||
bb35f315 | 187 | SCM scm_print_state_vtable; |
c4f37e80 | 188 | |
bb35f315 | 189 | static SCM print_state_pool; |
c4f37e80 | 190 | |
f843a84c | 191 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
1cc91f1b | 192 | |
3b3b36dd | 193 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
1bbd0b84 | 194 | (), |
b450f070 GB |
195 | "Return the current-pstate--the `cadr' of the print_state_pool.\n" |
196 | "`current-pstate' is only included in GUILE_DEBUG builds.") | |
1bbd0b84 | 197 | #define FUNC_NAME s_scm_current_pstate |
c62fbfe1 | 198 | { |
a0adfbf0 MD |
199 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
200 | return SCM_CADR (print_state_pool); | |
201 | else | |
0a284a4e | 202 | return SCM_BOOL_F; |
c62fbfe1 | 203 | } |
1bbd0b84 GB |
204 | #undef FUNC_NAME |
205 | ||
c62fbfe1 MD |
206 | #endif |
207 | ||
208 | #define PSTATE_SIZE 50L | |
209 | ||
698c0295 | 210 | static SCM |
1bbd0b84 | 211 | make_print_state (void) |
698c0295 MD |
212 | { |
213 | SCM print_state = scm_make_struct (SCM_CAR (print_state_pool), /* pstate type */ | |
bf685b6d | 214 | SCM_INUM0, |
698c0295 | 215 | SCM_EOL); |
bf685b6d | 216 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); |
00ffa0e7 | 217 | pstate->ref_vect = scm_c_make_vector (PSTATE_SIZE, SCM_UNDEFINED); |
bf685b6d | 218 | pstate->ref_stack = SCM_VELTS (pstate->ref_vect); |
b17004b8 | 219 | pstate->ceiling = SCM_VECTOR_LENGTH (pstate->ref_vect); |
698c0295 MD |
220 | return print_state; |
221 | } | |
1cc91f1b | 222 | |
c62fbfe1 MD |
223 | SCM |
224 | scm_make_print_state () | |
c62fbfe1 | 225 | { |
230d095f | 226 | SCM answer = SCM_BOOL_F; |
698c0295 MD |
227 | |
228 | /* First try to allocate a print state from the pool */ | |
229 | SCM_DEFER_INTS; | |
a0adfbf0 | 230 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) |
698c0295 MD |
231 | { |
232 | answer = SCM_CADR (print_state_pool); | |
233 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
234 | } | |
235 | SCM_ALLOW_INTS; | |
236 | ||
230d095f | 237 | return SCM_FALSEP (answer) ? make_print_state () : answer; |
c62fbfe1 | 238 | } |
a51ea417 | 239 | |
698c0295 | 240 | void |
6e8d25a6 | 241 | scm_free_print_state (SCM print_state) |
698c0295 MD |
242 | { |
243 | SCM handle; | |
244 | scm_print_state *pstate = SCM_PRINT_STATE (print_state); | |
245 | /* Cleanup before returning print state to pool. | |
246 | * It is better to do it here. Doing it in scm_prin1 | |
247 | * would cost more since that function is called much more | |
248 | * often. | |
249 | */ | |
250 | pstate->fancyp = 0; | |
bb35f315 | 251 | pstate->revealed = 0; |
698c0295 MD |
252 | SCM_NEWCELL (handle); |
253 | SCM_DEFER_INTS; | |
254 | SCM_SETCAR (handle, print_state); | |
255 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
256 | SCM_SETCDR (print_state_pool, handle); | |
257 | SCM_ALLOW_INTS; | |
258 | } | |
1cc91f1b | 259 | |
a51ea417 | 260 | static void |
1bbd0b84 | 261 | grow_ref_stack (scm_print_state *pstate) |
a51ea417 | 262 | { |
b17004b8 DH |
263 | unsigned long int old_size = SCM_VECTOR_LENGTH (pstate->ref_vect); |
264 | SCM *old_elts = SCM_VELTS (pstate->ref_vect); | |
265 | unsigned long int new_size = 2 * pstate->ceiling; | |
00ffa0e7 | 266 | SCM new_vect = scm_c_make_vector (new_size, SCM_UNDEFINED); |
b17004b8 DH |
267 | SCM *new_elts = SCM_VELTS (new_vect); |
268 | unsigned long int i; | |
269 | ||
270 | for (i = 0; i != old_size; ++i) | |
271 | new_elts [i] = old_elts [i]; | |
272 | ||
273 | pstate->ref_vect = new_vect; | |
274 | pstate->ref_stack = new_elts; | |
bf685b6d | 275 | pstate->ceiling = new_size; |
a51ea417 MD |
276 | } |
277 | ||
1cc91f1b | 278 | |
a51ea417 | 279 | static void |
1bbd0b84 | 280 | print_circref (SCM port,scm_print_state *pstate,SCM ref) |
a51ea417 | 281 | { |
c62fbfe1 MD |
282 | register int i; |
283 | int self = pstate->top - 1; | |
284 | i = pstate->top - 1; | |
285 | if (SCM_CONSP (pstate->ref_stack[i])) | |
286 | { | |
287 | while (i > 0) | |
288 | { | |
289 | if (SCM_NCONSP (pstate->ref_stack[i - 1]) | |
230d095f DH |
290 | || !SCM_EQ_P (SCM_CDR (pstate->ref_stack[i - 1]), |
291 | pstate->ref_stack[i])) | |
c62fbfe1 MD |
292 | break; |
293 | --i; | |
294 | } | |
295 | self = i; | |
296 | } | |
297 | for (i = pstate->top - 1; 1; --i) | |
230d095f | 298 | if (SCM_EQ_P (pstate->ref_stack[i], ref)) |
c62fbfe1 | 299 | break; |
b7f3516f | 300 | scm_putc ('#', port); |
c62fbfe1 | 301 | scm_intprint (i - self, 10, port); |
b7f3516f | 302 | scm_putc ('#', port); |
a51ea417 MD |
303 | } |
304 | ||
c62fbfe1 | 305 | /* Print generally. Handles both write and display according to PSTATE. |
0f2d19dd | 306 | */ |
8b840115 MD |
307 | SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); |
308 | SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); | |
1cc91f1b | 309 | |
0f2d19dd | 310 | void |
1bbd0b84 | 311 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
0f2d19dd | 312 | { |
0f2d19dd | 313 | taloop: |
54778cd3 | 314 | switch (SCM_ITAG3 (exp)) |
0f2d19dd | 315 | { |
e34f941a DH |
316 | case scm_tc3_closure: |
317 | case scm_tc3_tc7_1: | |
318 | case scm_tc3_tc7_2: | |
319 | /* These tc3 tags should never occur in an immediate value. They are | |
320 | * only used in cell types of non-immediates, i. e. the value returned | |
321 | * by SCM_CELL_TYPE (exp) can use these tags. | |
322 | */ | |
323 | scm_ipruk ("immediate", exp, port); | |
324 | break; | |
325 | case scm_tc3_int_1: | |
326 | case scm_tc3_int_2: | |
0f2d19dd JB |
327 | scm_intprint (SCM_INUM (exp), 10, port); |
328 | break; | |
e34f941a | 329 | case scm_tc3_imm24: |
7866a09b | 330 | if (SCM_CHARP (exp)) |
0f2d19dd | 331 | { |
e34f941a | 332 | long i = SCM_CHAR (exp); |
5ca6dc39 | 333 | |
b7f3516f TT |
334 | if (SCM_WRITINGP (pstate)) |
335 | { | |
336 | scm_puts ("#\\", port); | |
337 | if ((i >= 0) && (i <= ' ') && scm_charnames[i]) | |
338 | scm_puts (scm_charnames[i], port); | |
57b74422 GH |
339 | #ifndef EBCDIC |
340 | else if (i == '\177') | |
341 | scm_puts (scm_charnames[scm_n_charnames - 1], port); | |
342 | #endif | |
b7f3516f TT |
343 | else if (i < 0 || i > '\177') |
344 | scm_intprint (i, 8, port); | |
345 | else | |
346 | scm_putc (i, port); | |
347 | } | |
348 | else | |
349 | scm_putc (i, port); | |
0f2d19dd | 350 | } |
a51ea417 | 351 | else if (SCM_IFLAGP (exp) |
5ca6dc39 | 352 | && ((size_t) SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *)))) |
b7f3516f | 353 | scm_puts (SCM_ISYMCHARS (exp), port); |
0f2d19dd JB |
354 | else if (SCM_ILOCP (exp)) |
355 | { | |
b7f3516f | 356 | scm_puts ("#@", port); |
230d095f | 357 | scm_intprint (SCM_IFRAME (exp), 10, port); |
b7f3516f | 358 | scm_putc (SCM_ICDRP (exp) ? '-' : '+', port); |
230d095f | 359 | scm_intprint (SCM_IDIST (exp), 10, port); |
0f2d19dd JB |
360 | } |
361 | else | |
e34f941a DH |
362 | { |
363 | /* unknown immediate value */ | |
364 | scm_ipruk ("immediate", exp, port); | |
365 | } | |
0f2d19dd | 366 | break; |
e34f941a | 367 | case scm_tc3_cons_gloc: |
0f2d19dd | 368 | /* gloc */ |
b7f3516f | 369 | scm_puts ("#@", port); |
998308d3 | 370 | exp = SCM_GLOC_SYM (exp); |
0f2d19dd | 371 | goto taloop; |
e34f941a | 372 | case scm_tc3_cons: |
0f2d19dd JB |
373 | switch (SCM_TYP7 (exp)) |
374 | { | |
375 | case scm_tcs_cons_gloc: | |
376 | ||
fee7ef83 | 377 | if (SCM_STRUCT_VTABLE_DATA (exp) [scm_vtable_index_vcell] == 0) |
0f2d19dd | 378 | { |
c4f37e80 | 379 | ENTER_NESTED_DATA (pstate, exp, circref); |
8b840115 MD |
380 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) |
381 | { | |
382 | SCM pwps, print = pstate->writingp ? g_write : g_display; | |
383 | if (!print) | |
384 | goto print_struct; | |
385 | SCM_NEWSMOB (pwps, | |
386 | scm_tc16_port_with_ps, | |
54778cd3 | 387 | SCM_UNPACK (scm_cons (port, pstate->handle))); |
8b840115 MD |
388 | scm_call_generic_2 (print, exp, pwps); |
389 | } | |
390 | else | |
391 | { | |
392 | print_struct: | |
393 | scm_print_struct (exp, port, pstate); | |
394 | } | |
c4f37e80 | 395 | EXIT_NESTED_DATA (pstate); |
0f2d19dd JB |
396 | break; |
397 | } | |
398 | ||
399 | case scm_tcs_cons_imcar: | |
400 | case scm_tcs_cons_nimcar: | |
c62fbfe1 MD |
401 | ENTER_NESTED_DATA (pstate, exp, circref); |
402 | scm_iprlist ("(", exp, ')', port, pstate); | |
403 | EXIT_NESTED_DATA (pstate); | |
a51ea417 MD |
404 | break; |
405 | circref: | |
c62fbfe1 | 406 | print_circref (port, pstate, exp); |
0f2d19dd | 407 | break; |
7332df66 | 408 | macros: |
80ea260c | 409 | if (!SCM_CLOSUREP (SCM_CDR (exp))) |
7332df66 | 410 | goto prinmacro; |
0f2d19dd | 411 | case scm_tcs_closures: |
7332df66 MD |
412 | /* The user supplied print closure procedure must handle |
413 | macro closures as well. */ | |
bb35f315 MV |
414 | if (SCM_FALSEP (scm_procedure_p (SCM_PRINT_CLOSURE)) |
415 | || SCM_FALSEP (scm_printer_apply (SCM_PRINT_CLOSURE, | |
77c25af7 | 416 | exp, port, pstate))) |
bb35f315 | 417 | { |
ba031394 | 418 | SCM name, code, env; |
bb35f315 MV |
419 | if (SCM_TYP16 (exp) == scm_tc16_macro) |
420 | { | |
421 | /* Printing a macro. */ | |
422 | prinmacro: | |
423 | name = scm_macro_name (exp); | |
424 | if (!SCM_CLOSUREP (SCM_CDR (exp))) | |
425 | { | |
9e882eec | 426 | code = env = SCM_UNDEFINED; |
b7f3516f | 427 | scm_puts ("#<primitive-", port); |
bb35f315 MV |
428 | } |
429 | else | |
430 | { | |
431 | code = SCM_CODE (SCM_CDR (exp)); | |
ba031394 | 432 | env = SCM_ENV (SCM_CDR (exp)); |
b7f3516f | 433 | scm_puts ("#<", port); |
bb35f315 | 434 | } |
206d3de3 | 435 | if (SCM_CELL_WORD_0 (exp) & (3L << 16)) |
b7f3516f | 436 | scm_puts ("macro", port); |
bb35f315 | 437 | else |
b7f3516f | 438 | scm_puts ("syntax", port); |
206d3de3 | 439 | if (SCM_CELL_WORD_0 (exp) & (2L << 16)) |
b7f3516f | 440 | scm_putc ('!', port); |
bb35f315 MV |
441 | } |
442 | else | |
443 | { | |
444 | /* Printing a closure. */ | |
445 | name = scm_procedure_name (exp); | |
446 | code = SCM_CODE (exp); | |
ba031394 | 447 | env = SCM_ENV (exp); |
b7f3516f | 448 | scm_puts ("#<procedure", port); |
bb35f315 | 449 | } |
b24b5e13 | 450 | if (SCM_SYMBOLP (name)) |
bb35f315 | 451 | { |
b7f3516f | 452 | scm_putc (' ', port); |
b24b5e13 DH |
453 | scm_lfwrite (SCM_SYMBOL_CHARS (name), SCM_SYMBOL_LENGTH (name), port); |
454 | } | |
455 | else if (SCM_STRINGP (name)) | |
456 | { | |
457 | scm_putc (' ', port); | |
34f0f2b8 | 458 | scm_lfwrite (SCM_STRING_CHARS (name), SCM_STRING_LENGTH (name), port); |
bb35f315 | 459 | } |
9e882eec | 460 | if (!SCM_UNBNDP (code)) |
bb35f315 | 461 | { |
ba031394 MD |
462 | if (SCM_PRINT_SOURCE_P) |
463 | { | |
464 | code = scm_unmemocopy (code, | |
465 | SCM_EXTEND_ENV (SCM_CAR (code), | |
466 | SCM_EOL, | |
467 | env)); | |
468 | ENTER_NESTED_DATA (pstate, exp, circref); | |
469 | scm_iprlist (" ", code, '>', port, pstate); | |
470 | EXIT_NESTED_DATA (pstate); | |
471 | } | |
472 | else | |
473 | { | |
474 | if (SCM_TYP16 (exp) != scm_tc16_macro) | |
475 | { | |
b7f3516f | 476 | scm_putc (' ', port); |
ba031394 MD |
477 | scm_iprin1 (SCM_CAR (code), port, pstate); |
478 | } | |
b7f3516f | 479 | scm_putc ('>', port); |
ba031394 | 480 | } |
bb35f315 MV |
481 | } |
482 | else | |
b7f3516f | 483 | scm_putc ('>', port); |
bb35f315 | 484 | } |
0f2d19dd | 485 | break; |
0f2d19dd JB |
486 | case scm_tc7_substring: |
487 | case scm_tc7_string: | |
c62fbfe1 | 488 | if (SCM_WRITINGP (pstate)) |
0f2d19dd | 489 | { |
5ca6dc39 JB |
490 | scm_sizet i; |
491 | ||
b7f3516f | 492 | scm_putc ('"', port); |
d1ca2c64 | 493 | for (i = 0; i < SCM_STRING_LENGTH (exp); ++i) |
34f0f2b8 | 494 | switch (SCM_STRING_CHARS (exp)[i]) |
0f2d19dd | 495 | { |
dbef8851 | 496 | case '"': |
0f2d19dd | 497 | case '\\': |
b7f3516f | 498 | scm_putc ('\\', port); |
0f2d19dd | 499 | default: |
34f0f2b8 | 500 | scm_putc (SCM_STRING_CHARS (exp)[i], port); |
0f2d19dd | 501 | } |
b7f3516f | 502 | scm_putc ('"', port); |
0f2d19dd JB |
503 | break; |
504 | } | |
505 | else | |
34f0f2b8 | 506 | scm_lfwrite (SCM_STRING_CHARS (exp), SCM_STRING_LENGTH (exp), port); |
0f2d19dd | 507 | break; |
28b06554 | 508 | case scm_tc7_symbol: |
0f2d19dd JB |
509 | { |
510 | int pos; | |
511 | int end; | |
512 | int len; | |
513 | char * str; | |
514 | int weird; | |
515 | int maybe_weird; | |
4dc2435a | 516 | int mw_pos = 0; |
0f2d19dd | 517 | |
b17004b8 | 518 | len = SCM_SYMBOL_LENGTH (exp); |
86c991c2 | 519 | str = SCM_SYMBOL_CHARS (exp); |
0f2d19dd JB |
520 | pos = 0; |
521 | weird = 0; | |
522 | maybe_weird = 0; | |
523 | ||
524 | if (len == 0) | |
b7f3516f | 525 | scm_lfwrite ("#{}#", 4, port); |
0f2d19dd JB |
526 | |
527 | for (end = pos; end < len; ++end) | |
528 | switch (str[end]) | |
529 | { | |
530 | #ifdef BRACKETS_AS_PARENS | |
531 | case '[': | |
532 | case ']': | |
533 | #endif | |
534 | case '(': | |
535 | case ')': | |
dbef8851 | 536 | case '"': |
0f2d19dd JB |
537 | case ';': |
538 | case SCM_WHITE_SPACES: | |
539 | case SCM_LINE_INCREMENTORS: | |
540 | weird_handler: | |
541 | if (maybe_weird) | |
542 | { | |
543 | end = mw_pos; | |
544 | maybe_weird = 0; | |
545 | } | |
546 | if (!weird) | |
547 | { | |
b7f3516f | 548 | scm_lfwrite ("#{", 2, port); |
0f2d19dd JB |
549 | weird = 1; |
550 | } | |
551 | if (pos < end) | |
552 | { | |
b7f3516f | 553 | scm_lfwrite (str + pos, end - pos, port); |
0f2d19dd JB |
554 | } |
555 | { | |
556 | char buf[2]; | |
557 | buf[0] = '\\'; | |
558 | buf[1] = str[end]; | |
b7f3516f | 559 | scm_lfwrite (buf, 2, port); |
0f2d19dd JB |
560 | } |
561 | pos = end + 1; | |
562 | break; | |
563 | case '\\': | |
564 | if (weird) | |
565 | goto weird_handler; | |
566 | if (!maybe_weird) | |
567 | { | |
568 | maybe_weird = 1; | |
569 | mw_pos = pos; | |
570 | } | |
571 | break; | |
572 | case '}': | |
573 | case '#': | |
574 | if (weird) | |
575 | goto weird_handler; | |
576 | break; | |
577 | default: | |
578 | break; | |
579 | } | |
580 | if (pos < end) | |
b7f3516f | 581 | scm_lfwrite (str + pos, end - pos, port); |
5d2b97cd | 582 | scm_remember_upto_here_1 (exp); |
0f2d19dd | 583 | if (weird) |
b7f3516f | 584 | scm_lfwrite ("}#", 2, port); |
0f2d19dd JB |
585 | break; |
586 | } | |
587 | case scm_tc7_wvect: | |
c62fbfe1 | 588 | ENTER_NESTED_DATA (pstate, exp, circref); |
0f2d19dd | 589 | if (SCM_IS_WHVEC (exp)) |
b7f3516f | 590 | scm_puts ("#wh(", port); |
0f2d19dd | 591 | else |
b7f3516f | 592 | scm_puts ("#w(", port); |
0f2d19dd JB |
593 | goto common_vector_printer; |
594 | ||
595 | case scm_tc7_vector: | |
c62fbfe1 | 596 | ENTER_NESTED_DATA (pstate, exp, circref); |
b7f3516f | 597 | scm_puts ("#(", port); |
0f2d19dd | 598 | common_vector_printer: |
9fbaf27c | 599 | { |
5ca6dc39 | 600 | register long i; |
b17004b8 | 601 | int last = SCM_VECTOR_LENGTH (exp) - 1; |
9fbaf27c | 602 | int cutp = 0; |
b17004b8 | 603 | if (pstate->fancyp && SCM_VECTOR_LENGTH (exp) > pstate->length) |
9fbaf27c MD |
604 | { |
605 | last = pstate->length - 1; | |
606 | cutp = 1; | |
607 | } | |
608 | for (i = 0; i < last; ++i) | |
609 | { | |
610 | /* CHECK_INTS; */ | |
611 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
b7f3516f | 612 | scm_putc (' ', port); |
9fbaf27c MD |
613 | } |
614 | if (i == last) | |
615 | { | |
616 | /* CHECK_INTS; */ | |
617 | scm_iprin1 (SCM_VELTS (exp)[i], port, pstate); | |
618 | } | |
619 | if (cutp) | |
b7f3516f TT |
620 | scm_puts (" ...", port); |
621 | scm_putc (')', port); | |
9fbaf27c | 622 | } |
c62fbfe1 | 623 | EXIT_NESTED_DATA (pstate); |
0f2d19dd | 624 | break; |
afe5177e | 625 | #ifdef HAVE_ARRAYS |
0f2d19dd JB |
626 | case scm_tc7_bvect: |
627 | case scm_tc7_byvect: | |
628 | case scm_tc7_svect: | |
629 | case scm_tc7_ivect: | |
630 | case scm_tc7_uvect: | |
631 | case scm_tc7_fvect: | |
632 | case scm_tc7_dvect: | |
633 | case scm_tc7_cvect: | |
5c11cc9d | 634 | #ifdef HAVE_LONG_LONGS |
0f2d19dd JB |
635 | case scm_tc7_llvect: |
636 | #endif | |
c62fbfe1 | 637 | scm_raprin1 (exp, port, pstate); |
0f2d19dd | 638 | break; |
afe5177e | 639 | #endif |
0f2d19dd | 640 | case scm_tcs_subrs: |
9de33deb MD |
641 | scm_puts (SCM_SUBR_GENERIC (exp) && *SCM_SUBR_GENERIC (exp) |
642 | ? "#<primitive-generic " | |
643 | : "#<primitive-procedure ", | |
644 | port); | |
a002f1a2 | 645 | scm_puts (SCM_SYMBOL_CHARS (SCM_SNAME (exp)), port); |
b7f3516f | 646 | scm_putc ('>', port); |
0f2d19dd JB |
647 | break; |
648 | #ifdef CCLO | |
649 | case scm_tc7_cclo: | |
56977059 MD |
650 | { |
651 | SCM proc = SCM_CCLO_SUBR (exp); | |
54778cd3 | 652 | if (SCM_EQ_P (proc, scm_f_gsubr_apply)) |
56977059 MD |
653 | { |
654 | /* Print gsubrs as primitives */ | |
c180dfd3 | 655 | SCM name = scm_procedure_name (exp); |
56977059 MD |
656 | scm_puts ("#<primitive-procedure", port); |
657 | if (SCM_NFALSEP (name)) | |
658 | { | |
659 | scm_putc (' ', port); | |
a002f1a2 | 660 | scm_puts (SCM_SYMBOL_CHARS (name), port); |
56977059 MD |
661 | } |
662 | } | |
663 | else | |
664 | { | |
665 | scm_puts ("#<compiled-closure ", port); | |
666 | scm_iprin1 (proc, port, pstate); | |
667 | } | |
668 | scm_putc ('>', port); | |
669 | } | |
0f2d19dd JB |
670 | break; |
671 | #endif | |
c180dfd3 MD |
672 | case scm_tc7_pws: |
673 | scm_puts ("#<procedure-with-setter", port); | |
674 | { | |
675 | SCM name = scm_procedure_name (exp); | |
676 | if (SCM_NFALSEP (name)) | |
677 | { | |
678 | scm_putc (' ', port); | |
b24b5e13 | 679 | scm_display (name, port); |
c180dfd3 MD |
680 | } |
681 | } | |
682 | scm_putc ('>', port); | |
683 | break; | |
0f2d19dd | 684 | case scm_tc7_port: |
5ca6dc39 JB |
685 | { |
686 | register long i = SCM_PTOBNUM (exp); | |
687 | if (i < scm_numptob | |
688 | && scm_ptobs[i].print | |
689 | && (scm_ptobs[i].print) (exp, port, pstate)) | |
a51ea417 | 690 | break; |
5ca6dc39 JB |
691 | goto punk; |
692 | } | |
693 | case scm_tc7_smob: | |
694 | { | |
695 | register long i; | |
696 | ENTER_NESTED_DATA (pstate, exp, circref); | |
697 | i = SCM_SMOBNUM (exp); | |
698 | if (i < scm_numsmob && scm_smobs[i].print | |
699 | && (scm_smobs[i].print) (exp, port, pstate)) | |
700 | { | |
701 | EXIT_NESTED_DATA (pstate); | |
702 | break; | |
703 | } | |
704 | EXIT_NESTED_DATA (pstate); | |
705 | /* Macros have their print field set to NULL. They are | |
706 | handled at the same place as closures in order to achieve | |
707 | non-redundancy. Placing the condition here won't slow | |
708 | down printing of other smobs. */ | |
709 | if (SCM_TYP16 (exp) == scm_tc16_macro) | |
710 | goto macros; | |
711 | } | |
0f2d19dd | 712 | default: |
a51ea417 MD |
713 | punk: |
714 | scm_ipruk ("type", exp, port); | |
0f2d19dd JB |
715 | } |
716 | } | |
717 | } | |
718 | ||
c62fbfe1 MD |
719 | /* Print states are necessary for circular reference safe printing. |
720 | * They are also expensive to allocate. Therefore print states are | |
721 | * kept in a pool so that they can be reused. | |
722 | */ | |
1cc91f1b | 723 | |
bb35f315 MV |
724 | /* The PORT argument can also be a print-state/port pair, which will |
725 | * then be used instead of allocating a new print state. This is | |
726 | * useful for continuing a chain of print calls from Scheme. */ | |
727 | ||
a51ea417 | 728 | void |
1bbd0b84 | 729 | scm_prin1 (SCM exp, SCM port, int writingp) |
a51ea417 | 730 | { |
c4f37e80 MV |
731 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
732 | SCM pstate_scm; | |
c62fbfe1 MD |
733 | scm_print_state *pstate; |
734 | ||
bb35f315 MV |
735 | /* If PORT is a print-state/port pair, use that. Else create a new |
736 | print-state. */ | |
c4f37e80 | 737 | |
0c95b57d | 738 | if (SCM_PORT_WITH_PS_P (port)) |
bb35f315 | 739 | { |
52235e71 MD |
740 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
741 | port = SCM_PORT_WITH_PS_PORT (port); | |
bb35f315 MV |
742 | } |
743 | else | |
c62fbfe1 | 744 | { |
c4f37e80 MV |
745 | /* First try to allocate a print state from the pool */ |
746 | SCM_DEFER_INTS; | |
747 | if (SCM_NNULLP (SCM_CDR (print_state_pool))) | |
748 | { | |
749 | handle = SCM_CDR (print_state_pool); | |
750 | SCM_SETCDR (print_state_pool, SCM_CDDR (print_state_pool)); | |
751 | } | |
752 | SCM_ALLOW_INTS; | |
54778cd3 | 753 | if (SCM_FALSEP (handle)) |
c4f37e80 MV |
754 | handle = scm_cons (make_print_state (), SCM_EOL); |
755 | pstate_scm = SCM_CAR (handle); | |
c62fbfe1 | 756 | } |
c62fbfe1 | 757 | |
c4f37e80 | 758 | pstate = SCM_PRINT_STATE (pstate_scm); |
c62fbfe1 MD |
759 | pstate->writingp = writingp; |
760 | scm_iprin1 (exp, port, pstate); | |
761 | ||
bb35f315 MV |
762 | /* Return print state to pool if it has been created above and |
763 | hasn't escaped to Scheme. */ | |
764 | ||
54778cd3 | 765 | if (!SCM_FALSEP (handle) && !pstate->revealed) |
c4f37e80 MV |
766 | { |
767 | SCM_DEFER_INTS; | |
768 | SCM_SETCDR (handle, SCM_CDR (print_state_pool)); | |
769 | SCM_SETCDR (print_state_pool, handle); | |
770 | SCM_ALLOW_INTS; | |
771 | } | |
a51ea417 MD |
772 | } |
773 | ||
0f2d19dd JB |
774 | |
775 | /* Print an integer. | |
776 | */ | |
1cc91f1b | 777 | |
0f2d19dd | 778 | void |
1bbd0b84 | 779 | scm_intprint (long n, int radix, SCM port) |
0f2d19dd JB |
780 | { |
781 | char num_buf[SCM_INTBUFLEN]; | |
b7f3516f | 782 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
0f2d19dd JB |
783 | } |
784 | ||
785 | /* Print an object of unrecognized type. | |
786 | */ | |
1cc91f1b | 787 | |
0f2d19dd | 788 | void |
1bbd0b84 | 789 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
0f2d19dd | 790 | { |
b7f3516f TT |
791 | scm_puts ("#<unknown-", port); |
792 | scm_puts (hdr, port); | |
0f2d19dd JB |
793 | if (SCM_CELLP (ptr)) |
794 | { | |
b7f3516f | 795 | scm_puts (" (0x", port); |
54778cd3 | 796 | scm_intprint (SCM_CELL_WORD_0 (ptr), 16, port); |
b7f3516f | 797 | scm_puts (" . 0x", port); |
54778cd3 | 798 | scm_intprint (SCM_CELL_WORD_1 (ptr), 16, port); |
b7f3516f | 799 | scm_puts (") @", port); |
0f2d19dd | 800 | } |
b7f3516f | 801 | scm_puts (" 0x", port); |
54778cd3 | 802 | scm_intprint (SCM_UNPACK (ptr), 16, port); |
b7f3516f | 803 | scm_putc ('>', port); |
0f2d19dd JB |
804 | } |
805 | ||
806 | /* Print a list. | |
807 | */ | |
a51ea417 | 808 | |
1cc91f1b | 809 | |
0f2d19dd | 810 | void |
1bbd0b84 | 811 | scm_iprlist (char *hdr,SCM exp,int tlr,SCM port,scm_print_state *pstate) |
0f2d19dd | 812 | { |
c62fbfe1 MD |
813 | register SCM hare, tortoise; |
814 | int floor = pstate->top - 2; | |
b7f3516f | 815 | scm_puts (hdr, port); |
0f2d19dd | 816 | /* CHECK_INTS; */ |
c62fbfe1 MD |
817 | if (pstate->fancyp) |
818 | goto fancy_printing; | |
819 | ||
820 | /* Run a hare and tortoise so that total time complexity will be | |
821 | O(depth * N) instead of O(N^2). */ | |
822 | hare = SCM_CDR (exp); | |
823 | tortoise = exp; | |
0c95b57d | 824 | while (SCM_ECONSP (hare)) |
c62fbfe1 | 825 | { |
54778cd3 | 826 | if (SCM_EQ_P (hare, tortoise)) |
c62fbfe1 MD |
827 | goto fancy_printing; |
828 | hare = SCM_CDR (hare); | |
2fab3faa | 829 | if (SCM_IMP (hare) || SCM_NECONSP (hare)) |
c62fbfe1 MD |
830 | break; |
831 | hare = SCM_CDR (hare); | |
832 | tortoise = SCM_CDR (tortoise); | |
833 | } | |
834 | ||
835 | /* No cdr cycles intrinsic to this list */ | |
836 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
0f2d19dd JB |
837 | exp = SCM_CDR (exp); |
838 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
839 | { | |
5ca6dc39 JB |
840 | register int i; |
841 | ||
0f2d19dd JB |
842 | if (SCM_NECONSP (exp)) |
843 | break; | |
c62fbfe1 | 844 | for (i = floor; i >= 0; --i) |
230d095f | 845 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
846 | goto circref; |
847 | PUSH_REF (pstate, exp); | |
b7f3516f | 848 | scm_putc (' ', port); |
0f2d19dd | 849 | /* CHECK_INTS; */ |
c62fbfe1 | 850 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
0f2d19dd JB |
851 | } |
852 | if (SCM_NNULLP (exp)) | |
853 | { | |
b7f3516f | 854 | scm_puts (" . ", port); |
c62fbfe1 | 855 | scm_iprin1 (exp, port, pstate); |
0f2d19dd | 856 | } |
c62fbfe1 | 857 | |
a51ea417 | 858 | end: |
b7f3516f | 859 | scm_putc (tlr, port); |
c62fbfe1 | 860 | pstate->top = floor + 2; |
a51ea417 | 861 | return; |
c62fbfe1 MD |
862 | |
863 | fancy_printing: | |
864 | { | |
865 | int n = pstate->length; | |
866 | ||
867 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
868 | exp = SCM_CDR (exp); --n; | |
869 | for (; SCM_NIMP (exp); exp = SCM_CDR (exp)) | |
870 | { | |
5ca6dc39 JB |
871 | register unsigned long i; |
872 | ||
c62fbfe1 MD |
873 | if (SCM_NECONSP (exp)) |
874 | break; | |
875 | for (i = 0; i < pstate->top; ++i) | |
230d095f | 876 | if (SCM_EQ_P (pstate->ref_stack[i], exp)) |
c62fbfe1 MD |
877 | goto fancy_circref; |
878 | if (pstate->fancyp) | |
879 | { | |
880 | if (n == 0) | |
881 | { | |
b7f3516f | 882 | scm_puts (" ...", port); |
c62fbfe1 MD |
883 | goto skip_tail; |
884 | } | |
885 | else | |
886 | --n; | |
887 | } | |
888 | PUSH_REF(pstate, exp); | |
889 | ++pstate->list_offset; | |
b7f3516f | 890 | scm_putc (' ', port); |
c62fbfe1 MD |
891 | /* CHECK_INTS; */ |
892 | scm_iprin1 (SCM_CAR (exp), port, pstate); | |
893 | } | |
894 | } | |
895 | if (SCM_NNULLP (exp)) | |
896 | { | |
b7f3516f | 897 | scm_puts (" . ", port); |
c62fbfe1 MD |
898 | scm_iprin1 (exp, port, pstate); |
899 | } | |
900 | skip_tail: | |
901 | pstate->list_offset -= pstate->top - floor - 2; | |
a51ea417 | 902 | goto end; |
a51ea417 | 903 | |
c62fbfe1 MD |
904 | fancy_circref: |
905 | pstate->list_offset -= pstate->top - floor - 2; | |
906 | ||
907 | circref: | |
b7f3516f | 908 | scm_puts (" . ", port); |
c62fbfe1 MD |
909 | print_circref (port, pstate, exp); |
910 | goto end; | |
0f2d19dd JB |
911 | } |
912 | ||
913 | \f | |
914 | ||
bb35f315 MV |
915 | int |
916 | scm_valid_oport_value_p (SCM val) | |
917 | { | |
368cf54d GB |
918 | return (SCM_OPOUTPORTP (val) |
919 | || (SCM_PORT_WITH_PS_P (val) | |
920 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); | |
bb35f315 MV |
921 | } |
922 | ||
8b840115 | 923 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
1cc91f1b | 924 | |
0f2d19dd | 925 | SCM |
1bbd0b84 | 926 | scm_write (SCM obj, SCM port) |
0f2d19dd JB |
927 | { |
928 | if (SCM_UNBNDP (port)) | |
929 | port = scm_cur_outp; | |
3eb7e6ee JB |
930 | |
931 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); | |
bb35f315 | 932 | |
a51ea417 | 933 | scm_prin1 (obj, port, 1); |
0f2d19dd JB |
934 | #ifdef HAVE_PIPE |
935 | # ifdef EPIPE | |
936 | if (EPIPE == errno) | |
937 | scm_close_port (port); | |
938 | # endif | |
939 | #endif | |
940 | return SCM_UNSPECIFIED; | |
941 | } | |
942 | ||
943 | ||
8b840115 | 944 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
1cc91f1b | 945 | |
0f2d19dd | 946 | SCM |
1bbd0b84 | 947 | scm_display (SCM obj, SCM port) |
0f2d19dd JB |
948 | { |
949 | if (SCM_UNBNDP (port)) | |
950 | port = scm_cur_outp; | |
3eb7e6ee JB |
951 | |
952 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); | |
bb35f315 | 953 | |
a51ea417 | 954 | scm_prin1 (obj, port, 0); |
0f2d19dd JB |
955 | #ifdef HAVE_PIPE |
956 | # ifdef EPIPE | |
957 | if (EPIPE == errno) | |
958 | scm_close_port (port); | |
959 | # endif | |
960 | #endif | |
961 | return SCM_UNSPECIFIED; | |
962 | } | |
963 | ||
70d63753 GB |
964 | |
965 | SCM_DEFINE (scm_simple_format, "simple-format", 2, 0, 1, | |
966 | (SCM destination, SCM message, SCM args), | |
eca65e90 MG |
967 | "Write @var{message} to @var{destination}, defaulting to\n" |
968 | "the current output port.\n" | |
969 | "@var{message} can contain @code{~A} (was @code{%s}) and\n" | |
970 | "@code{~S} (was @code{%S}) escapes. When printed,\n" | |
971 | "the escapes are replaced with corresponding members of\n" | |
972 | "@var{ARGS}:\n" | |
973 | "@code{~A} formats using @code{display} and @code{~S} formats\n" | |
974 | "using @code{write}.\n" | |
975 | "If @var{destination} is @code{#t}, then use the current output\n" | |
976 | "port, if @var{destination} is @code{#f}, then return a string\n" | |
977 | "containing the formatted text. Does not add a trailing newline.") | |
70d63753 GB |
978 | #define FUNC_NAME s_scm_simple_format |
979 | { | |
980 | SCM answer = SCM_UNSPECIFIED; | |
981 | int fReturnString = 0; | |
982 | int writingp; | |
983 | char *start; | |
b24b5e13 | 984 | char *end; |
70d63753 GB |
985 | char *p; |
986 | ||
daba1a71 MD |
987 | if (SCM_EQ_P (destination, SCM_BOOL_T)) |
988 | { | |
989 | destination = scm_cur_outp; | |
990 | } | |
991 | else if (SCM_FALSEP (destination)) | |
992 | { | |
993 | fReturnString = 1; | |
994 | destination = scm_mkstrport (SCM_INUM0, | |
995 | scm_make_string (SCM_INUM0, SCM_UNDEFINED), | |
996 | SCM_OPN | SCM_WRTNG, | |
997 | FUNC_NAME); | |
998 | } | |
999 | else | |
1000 | { | |
1001 | SCM_VALIDATE_OPORT_VALUE (1, destination); | |
1002 | destination = SCM_COERCE_OUTPORT (destination); | |
1003 | } | |
1004 | SCM_VALIDATE_STRING (2, message); | |
af45e3b0 | 1005 | SCM_VALIDATE_REST_ARGUMENT (args); |
70d63753 | 1006 | |
34f0f2b8 | 1007 | start = SCM_STRING_CHARS (message); |
b24b5e13 DH |
1008 | end = start + SCM_STRING_LENGTH (message); |
1009 | for (p = start; p != end; ++p) | |
70d63753 GB |
1010 | if (*p == '~') |
1011 | { | |
b24b5e13 DH |
1012 | if (!SCM_CONSP (args)) |
1013 | continue; | |
1014 | ||
1015 | if (++p == end) | |
70d63753 GB |
1016 | continue; |
1017 | ||
cc6f0237 | 1018 | if (*p == 'A' || *p == 'a') |
70d63753 | 1019 | writingp = 0; |
cc6f0237 | 1020 | else if (*p == 'S' || *p == 's') |
70d63753 GB |
1021 | writingp = 1; |
1022 | else | |
1023 | continue; | |
1024 | ||
1025 | scm_lfwrite (start, p - start - 1, destination); | |
1026 | scm_prin1 (SCM_CAR (args), destination, writingp); | |
1027 | args = SCM_CDR (args); | |
1028 | start = p + 1; | |
1029 | } | |
1030 | scm_lfwrite (start, p - start, destination); | |
1031 | ||
1032 | if (fReturnString) | |
1033 | answer = scm_strport_to_string (destination); | |
1034 | ||
daba1a71 | 1035 | return scm_return_first (answer, message); |
70d63753 GB |
1036 | } |
1037 | #undef FUNC_NAME | |
1038 | ||
1039 | ||
3b3b36dd | 1040 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
b450f070 | 1041 | (SCM port), |
eca65e90 | 1042 | "Send a newline to @var{port}.") |
1bbd0b84 | 1043 | #define FUNC_NAME s_scm_newline |
0f2d19dd JB |
1044 | { |
1045 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1046 | port = scm_cur_outp; |
3eb7e6ee | 1047 | |
3b3b36dd | 1048 | SCM_VALIDATE_OPORT_VALUE (1,port); |
bb35f315 | 1049 | |
0ef4ae82 | 1050 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1051 | return SCM_UNSPECIFIED; |
1052 | } | |
1bbd0b84 | 1053 | #undef FUNC_NAME |
0f2d19dd | 1054 | |
3b3b36dd | 1055 | SCM_DEFINE (scm_write_char, "write-char", 1, 1, 0, |
b450f070 | 1056 | (SCM chr, SCM port), |
eca65e90 | 1057 | "Send character @var{chr} to @var{port}.") |
1bbd0b84 | 1058 | #define FUNC_NAME s_scm_write_char |
0f2d19dd JB |
1059 | { |
1060 | if (SCM_UNBNDP (port)) | |
bb35f315 | 1061 | port = scm_cur_outp; |
3eb7e6ee | 1062 | |
7866a09b | 1063 | SCM_VALIDATE_CHAR (1,chr); |
3b3b36dd | 1064 | SCM_VALIDATE_OPORT_VALUE (2,port); |
bb35f315 | 1065 | |
7866a09b | 1066 | scm_putc ((int) SCM_CHAR (chr), SCM_COERCE_OUTPORT (port)); |
0f2d19dd JB |
1067 | #ifdef HAVE_PIPE |
1068 | # ifdef EPIPE | |
1069 | if (EPIPE == errno) | |
1070 | scm_close_port (port); | |
1071 | # endif | |
1072 | #endif | |
1073 | return SCM_UNSPECIFIED; | |
1074 | } | |
1bbd0b84 | 1075 | #undef FUNC_NAME |
0f2d19dd | 1076 | |
0f2d19dd JB |
1077 | \f |
1078 | ||
bb35f315 | 1079 | /* Call back to Scheme code to do the printing of special objects |
c19bc088 MD |
1080 | * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob |
1081 | * containing PORT and PSTATE. This object can be used as the port for | |
1082 | * display/write etc to continue the current print chain. The REVEALED | |
1083 | * field of PSTATE is set to true to indicate that the print state has | |
1084 | * escaped to Scheme and thus has to be freed by the GC. | |
1085 | */ | |
1086 | ||
e841c3e0 | 1087 | scm_bits_t scm_tc16_port_with_ps; |
c19bc088 MD |
1088 | |
1089 | /* Print exactly as the port itself would */ | |
1090 | ||
1091 | static int | |
e841c3e0 | 1092 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
c19bc088 MD |
1093 | { |
1094 | obj = SCM_PORT_WITH_PS_PORT (obj); | |
1095 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); | |
1096 | } | |
c4f37e80 MV |
1097 | |
1098 | SCM | |
1bbd0b84 | 1099 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
c4f37e80 | 1100 | { |
c19bc088 | 1101 | SCM pwps; |
bb35f315 | 1102 | SCM pair = scm_cons (port, pstate->handle); |
54778cd3 | 1103 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (pair)); |
bb35f315 | 1104 | pstate->revealed = 1; |
c19bc088 MD |
1105 | return scm_apply (proc, exp, scm_cons (pwps, scm_listofnull)); |
1106 | } | |
1107 | ||
a1ec6916 | 1108 | SCM_DEFINE (scm_port_with_print_state, "port-with-print-state", 2, 0, 0, |
1bbd0b84 | 1109 | (SCM port, SCM pstate), |
71331188 MG |
1110 | "Create a new port which behaves like @var{port}, but with an\n" |
1111 | "included print state @var{pstate}.") | |
1bbd0b84 | 1112 | #define FUNC_NAME s_scm_port_with_print_state |
c19bc088 MD |
1113 | { |
1114 | SCM pwps; | |
3b3b36dd GB |
1115 | SCM_VALIDATE_OPORT_VALUE (1,port); |
1116 | SCM_VALIDATE_PRINTSTATE (2,pstate); | |
c19bc088 | 1117 | port = SCM_COERCE_OUTPORT (port); |
54778cd3 | 1118 | SCM_NEWSMOB (pwps, scm_tc16_port_with_ps, SCM_UNPACK (scm_cons (port, pstate))); |
c19bc088 MD |
1119 | return pwps; |
1120 | } | |
1bbd0b84 | 1121 | #undef FUNC_NAME |
c19bc088 | 1122 | |
a1ec6916 | 1123 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
1bbd0b84 | 1124 | (SCM port), |
71331188 MG |
1125 | "Return the print state of the port @var{port}. If @var{port}\n" |
1126 | "has no associated print state, @code{#f} is returned.") | |
1bbd0b84 | 1127 | #define FUNC_NAME s_scm_get_print_state |
c19bc088 | 1128 | { |
368cf54d GB |
1129 | if (SCM_PORT_WITH_PS_P (port)) |
1130 | return SCM_PORT_WITH_PS_PS (port); | |
f5f2dcff | 1131 | if (SCM_OUTPUT_PORT_P (port)) |
368cf54d | 1132 | return SCM_BOOL_F; |
276dd677 | 1133 | SCM_WRONG_TYPE_ARG (1, port); |
c4f37e80 | 1134 | } |
1bbd0b84 | 1135 | #undef FUNC_NAME |
bb35f315 | 1136 | |
c4f37e80 | 1137 | \f |
1cc91f1b | 1138 | |
0f2d19dd JB |
1139 | void |
1140 | scm_init_print () | |
0f2d19dd | 1141 | { |
c19bc088 | 1142 | SCM vtable, layout, type; |
4bfdf158 | 1143 | |
b7ff98dd | 1144 | scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS); |
3ce4544c | 1145 | vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL); |
4bfdf158 | 1146 | layout = scm_make_struct_layout (scm_makfrom0str (SCM_PRINT_STATE_LAYOUT)); |
c19bc088 | 1147 | type = scm_make_struct (vtable, SCM_INUM0, SCM_LIST1 (layout)); |
38ae064c | 1148 | scm_set_struct_vtable_name_x (type, scm_str2symbol ("print-state")); |
c62fbfe1 | 1149 | print_state_pool = scm_permanent_object (scm_cons (type, SCM_EOL)); |
c4f37e80 | 1150 | |
bb35f315 | 1151 | scm_print_state_vtable = type; |
c4f37e80 | 1152 | |
c19bc088 MD |
1153 | /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */ |
1154 | scm_tc16_port_with_ps = scm_make_smob_type (0, 0); | |
1155 | scm_set_smob_mark (scm_tc16_port_with_ps, scm_markcdr); | |
e841c3e0 | 1156 | scm_set_smob_print (scm_tc16_port_with_ps, port_with_ps_print); |
c19bc088 | 1157 | |
8dc9439f | 1158 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 1159 | #include "libguile/print.x" |
8dc9439f | 1160 | #endif |
0f2d19dd | 1161 | } |
89e00824 ML |
1162 | |
1163 | /* | |
1164 | Local Variables: | |
1165 | c-file-style: "gnu" | |
1166 | End: | |
1167 | */ |