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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef __SCMH | |
4 | #define __SCMH | |
5 | /* Copyright (C) 1995, 1996 Free Software Foundation, Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this software; see the file COPYING. If not, write to | |
19 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | * | |
21 | * As a special exception, the Free Software Foundation gives permission | |
22 | * for additional uses of the text contained in its release of GUILE. | |
23 | * | |
24 | * The exception is that, if you link the GUILE library with other files | |
25 | * to produce an executable, this does not by itself cause the | |
26 | * resulting executable to be covered by the GNU General Public License. | |
27 | * Your use of that executable is in no way restricted on account of | |
28 | * linking the GUILE library code into it. | |
29 | * | |
30 | * This exception does not however invalidate any other reasons why | |
31 | * the executable file might be covered by the GNU General Public License. | |
32 | * | |
33 | * This exception applies only to the code released by the | |
34 | * Free Software Foundation under the name GUILE. If you copy | |
35 | * code from other Free Software Foundation releases into a copy of | |
36 | * GUILE, as the General Public License permits, the exception does | |
37 | * not apply to the code that you add in this way. To avoid misleading | |
38 | * anyone as to the status of such modified files, you must delete | |
39 | * this exception notice from them. | |
40 | * | |
41 | * If you write modifications of your own for GUILE, it is your choice | |
42 | * whether to permit this exception to apply to your modifications. | |
43 | * If you do not wish that, delete this exception notice. | |
44 | */ | |
45 | \f | |
46 | /* {Supported Options} | |
47 | * | |
48 | * These may be defined or undefined. | |
49 | */ | |
50 | ||
51 | /* If the compile FLAG `CAUTIOUS' is #defined then the number of | |
52 | * arguments is always checked for application of closures. If the | |
53 | * compile FLAG `RECKLESS' is #defined then they are not checked. | |
54 | * Otherwise, number of argument checks for closures are made only when | |
55 | * the function position (whose value is the closure) of a combination is | |
56 | * not an ILOC or GLOC. When the function position of a combination is a | |
57 | * symbol it will be checked only the first time it is evaluated because | |
58 | * it will then be replaced with an ILOC or GLOC. | |
59 | */ | |
60 | #undef RECKLESS | |
61 | #define CAUTIOUS | |
62 | ||
63 | /* After looking up a local for the first time, rewrite the | |
64 | * code graph, caching its position. | |
65 | */ | |
66 | #define MEMOIZE_LOCALS | |
67 | ||
68 | /* All the number support there is. | |
69 | */ | |
70 | #define SCM_FLOATS | |
71 | #define BIGNUMS | |
72 | ||
73 | /* GC should relinquish empty cons-pair arenas. | |
74 | */ | |
75 | #define GC_FREE_SEGMENTS | |
76 | ||
77 | /* Provide a scheme-accessible count-down timer that | |
78 | * generates a pseudo-interrupt. | |
79 | */ | |
80 | #define TICKS | |
81 | ||
82 | ||
83 | /* Use engineering notation when converting numbers strings? | |
84 | */ | |
85 | #undef ENGNOT | |
86 | ||
87 | /* Include support for uniform arrays? | |
88 | * | |
89 | * Possibly some of the initialization code depends on this | |
90 | * being defined, but that is a bug and should be fixed. | |
91 | */ | |
92 | #define ARRAYS | |
93 | ||
94 | #undef SCM_CAREFUL_INTS | |
95 | \f | |
96 | /* {Unsupported Options} | |
97 | * | |
98 | * These must be defined. | |
99 | */ | |
100 | ||
101 | ||
102 | #define CCLO | |
103 | #define SICP | |
104 | ||
105 | \f | |
106 | ||
107 | /* Random options (net yet supported or in final form). */ | |
108 | ||
109 | #undef DEBUG_EXTENSIONS | |
110 | #undef READER_EXTENSIONS | |
111 | #undef SCM_STACK_LIMIT 20000 | |
112 | #undef NO_CEVAL_STACK_CHECK | |
113 | #undef LONGLONGS | |
114 | ||
115 | /* Some auto-generated .h files contain unused prototypes | |
116 | * that need these typedefs. | |
117 | */ | |
118 | typedef long long_long; | |
119 | typedef unsigned long ulong_long; | |
120 | ||
121 | ||
122 | \f | |
123 | ||
124 | /* Define | |
125 | * | |
126 | * SCM_CHAR_SCM_CODE_LIMIT == UCHAR_MAX + 1 | |
127 | * SCM_MOST_POSITIVE_FIXNUM (LONG_MAX>>2) | |
128 | * SCM_MOST_NEGATIVE_FIXNUM == SCM_SRS((long)LONG_MIN, 2) | |
129 | */ | |
130 | ||
131 | #ifdef HAVE_LIMITSH | |
132 | # include <limits.h> | |
133 | # ifdef UCHAR_MAX | |
134 | # define SCM_CHAR_SCM_CODE_LIMIT (UCHAR_MAX+1L) | |
135 | # else | |
136 | # define SCM_CHAR_SCM_CODE_LIMIT 256L | |
137 | # endif /* def UCHAR_MAX */ | |
138 | # define SCM_MOST_POSITIVE_FIXNUM (LONG_MAX>>2) | |
139 | # ifdef _UNICOS /* Stupid cray bug */ | |
140 | # define SCM_MOST_NEGATIVE_FIXNUM ((long)LONG_MIN/4) | |
141 | # else | |
142 | # define SCM_MOST_NEGATIVE_FIXNUM SCM_SRS((long)LONG_MIN, 2) | |
143 | # endif /* UNICOS */ | |
144 | #else | |
145 | # define SCM_CHAR_SCM_CODE_LIMIT 256L | |
146 | # define SCM_MOST_POSITIVE_FIXNUM ((long)((unsigned long)~0L>>3)) | |
147 | # if (0 != ~0) | |
148 | # define SCM_MOST_NEGATIVE_FIXNUM (-SCM_MOST_POSITIVE_FIXNUM-1) | |
149 | # else | |
150 | # define SCM_MOST_NEGATIVE_FIXNUM (-SCM_MOST_POSITIVE_FIXNUM) | |
151 | # endif /* (0 != ~0) */ | |
152 | #endif /* def HAVE_LIMITSH */ | |
153 | \f | |
154 | ||
155 | #include <scmconfig.h> | |
156 | #include "tags.h" | |
157 | ||
158 | \f | |
159 | #ifdef vms | |
160 | # ifndef CHEAP_CONTINUATIONS | |
161 | typedef int jmp_buf[17]; | |
162 | extern int setjump(jmp_buf env); | |
163 | extern int longjump(jmp_buf env, int ret); | |
164 | # define setjmp setjump | |
165 | # define longjmp longjump | |
166 | # else | |
167 | # include <setjmp.h> | |
168 | # endif | |
169 | #else /* ndef vms */ | |
170 | # ifdef _CRAY1 | |
171 | typedef int jmp_buf[112]; | |
172 | extern int setjump(jmp_buf env); | |
173 | extern int longjump(jmp_buf env, int ret); | |
174 | # define setjmp setjump | |
175 | # define longjmp longjump | |
176 | # else /* ndef _CRAY1 */ | |
177 | # include <setjmp.h> | |
178 | # endif /* ndef _CRAY1 */ | |
179 | #endif /* ndef vms */ | |
180 | ||
0f2d19dd JB |
181 | /* James Clark came up with this neat one instruction fix for |
182 | * continuations on the SPARC. It flushes the register windows so | |
183 | * that all the state of the process is contained in the stack. | |
184 | */ | |
185 | ||
186 | #ifdef sparc | |
187 | # define SCM_FLUSH_REGISTER_WINDOWS asm("ta 3") | |
188 | #else | |
189 | # define SCM_FLUSH_REGISTER_WINDOWS /* empty */ | |
190 | #endif | |
191 | ||
192 | /* If stack is not longword aligned then | |
193 | */ | |
194 | ||
195 | /* #define SHORT_ALIGN */ | |
196 | #ifdef THINK_C | |
197 | # define SHORT_ALIGN | |
198 | #endif | |
199 | #ifdef MSDOS | |
200 | # define SHORT_ALIGN | |
201 | #endif | |
202 | #ifdef atarist | |
203 | # define SHORT_ALIGN | |
204 | #endif | |
205 | ||
206 | #ifdef SHORT_ALIGN | |
207 | typedef short SCM_STACKITEM; | |
208 | #else | |
209 | typedef long SCM_STACKITEM; | |
210 | #endif | |
211 | \f | |
212 | ||
213 | extern unsigned int scm_async_clock; | |
214 | #define SCM_ASYNC_TICK if (0 == --scm_async_clock) scm_async_click () | |
215 | ||
216 | #ifdef SCM_CAREFUL_INTS | |
217 | #define SCM_CHECK_NOT_DISABLED \ | |
218 | if (scm_ints_disabled) \ | |
219 | fputs("ints already disabled\n", stderr); \ | |
220 | ||
221 | #define SCM_CHECK_NOT_ENABLED \ | |
222 | if (!scm_ints_disabled) \ | |
223 | fputs("ints already enabled\n", stderr); \ | |
224 | ||
225 | #else | |
226 | #define SCM_CHECK_NOT_DISABLED | |
227 | #define SCM_CHECK_NOT_ENABLED | |
228 | #endif | |
229 | ||
230 | ||
231 | #define SCM_DEFER_INTS \ | |
232 | { \ | |
233 | SCM_CHECK_NOT_DISABLED; \ | |
234 | scm_ints_disabled = 1; \ | |
235 | } \ | |
236 | ||
237 | ||
238 | #define SCM_ALLOW_INTS_ONLY \ | |
239 | { \ | |
240 | scm_ints_disabled = 0; \ | |
241 | } \ | |
242 | ||
243 | ||
244 | #define SCM_ALLOW_INTS \ | |
245 | { \ | |
246 | SCM_CHECK_NOT_ENABLED; \ | |
247 | scm_ints_disabled = 0; \ | |
248 | SCM_ASYNC_TICK; \ | |
249 | } \ | |
250 | ||
251 | ||
252 | #define SCM_REDEFER_INTS \ | |
253 | { \ | |
254 | ++scm_ints_disabled; \ | |
255 | } \ | |
256 | ||
257 | ||
258 | #define SCM_REALLOW_INTS \ | |
259 | { \ | |
260 | --scm_ints_disabled; \ | |
261 | if (!scm_ints_disabled) \ | |
262 | SCM_ASYNC_TICK; \ | |
263 | } \ | |
264 | ||
265 | ||
266 | ||
267 | \f | |
268 | ||
269 | /** SCM_ASSERT | |
270 | ** | |
271 | **/ | |
272 | ||
273 | ||
274 | #ifdef SCM_RECKLESS | |
275 | #define SCM_ASSERT(_cond, _arg, _pos, _subr) | |
276 | #define SCM_ASRTGO(_cond, _label) | |
277 | #else | |
278 | #define SCM_ASSERT(_cond, _arg, _pos, _subr) \ | |
279 | if (!(_cond)) \ | |
280 | scm_wta(_arg, (char *)(_pos), _subr) | |
281 | #define SCM_ASRTGO(_cond, _label) \ | |
282 | if (!(_cond)) \ | |
283 | goto _label | |
284 | #endif | |
95b88819 | 285 | |
02b754d3 GH |
286 | #define SCM_SYSERROR(_subr) \ |
287 | scm_everr (SCM_UNDEFINED, SCM_EOL, SCM_UNDEFINED, \ | |
288 | strerror (errno), _subr) | |
289 | ||
290 | /* equivalent to: | |
291 | scm_throw (system_error_sym, \ | |
292 | scm_listify (scm_makfrom0str (strerror (errno)), \ | |
293 | scm_makfrom0str (_subr), \ | |
294 | SCM_UNDEFINED)); | |
295 | */ | |
95b88819 GH |
296 | #ifdef ENOSYS |
297 | # define SCM_SYSMISSING(_subr) \ | |
298 | scm_everr (SCM_UNDEFINED, SCM_EOL, SCM_UNDEFINED, \ | |
299 | strerror (ENOSYS), _subr) | |
300 | #else | |
301 | # define SCM_SYSMISSING(_subr) \ | |
302 | scm_everr (SCM_UNDEFINED, SCM_EOL, SCM_UNDEFINED, \ | |
303 | "missing function, even ENOSYS is missing", _subr) | |
304 | #endif | |
0f2d19dd JB |
305 | #define SCM_ARGn 0 |
306 | #define SCM_ARG1 1 | |
307 | #define SCM_ARG2 2 | |
308 | #define SCM_ARG3 3 | |
309 | #define SCM_ARG4 4 | |
310 | #define SCM_ARG5 5 | |
311 | #define SCM_ARG6 6 | |
312 | #define SCM_ARG7 7 | |
313 | #define SCM_ARGERR(X) ((X) < SCM_WNA \ | |
314 | ? (char *)(X) \ | |
315 | : "wrong type argument") | |
316 | ||
317 | /* Following must match entry indexes in scm_errmsgs[]. | |
318 | * Also, SCM_WNA must follow the last SCM_ARGn in sequence. | |
319 | */ | |
320 | #define SCM_WNA 8 | |
321 | #define SCM_OVSCM_FLOW 9 | |
322 | #define SCM_OUTOFRANGE 10 | |
323 | #define SCM_NALLOC 11 | |
324 | #define SCM_STACK_SCM_OVSCM_FLOW 12 | |
325 | #define SCM_EXIT 13 | |
326 | ||
327 | ||
328 | /* (...still matching scm_errmsgs) These | |
329 | * are signals. Signals may become errors | |
330 | * but are distinguished because they first | |
331 | * try to invoke a handler that can resume | |
332 | * the interrupted routine. | |
333 | */ | |
334 | #define SCM_HUP_SIGNAL 14 | |
335 | #define SCM_INT_SIGNAL 15 | |
336 | #define SCM_FPE_SIGNAL 16 | |
337 | #define SCM_BUS_SIGNAL 17 | |
338 | #define SCM_SEGV_SIGNAL 18 | |
339 | #define SCM_ALRM_SIGNAL 19 | |
340 | #define SCM_GC_SIGNAL 20 | |
341 | #define SCM_TICK_SIGNAL 21 | |
342 | ||
343 | #define SCM_SIG_ORD(X) ((X) - SCM_HUP_SIGNAL) | |
344 | #define SCM_ORD_SIG(X) ((X) + SCM_HUP_SIGNAL) | |
345 | #define SCM_NUM_SIGS (SCM_SIG_ORD (SCM_TICK_SIGNAL) + 1) | |
346 | ||
347 | struct errdesc | |
348 | { | |
349 | char *msg; | |
350 | char *s_response; | |
351 | short parent_err; | |
352 | }; | |
353 | ||
354 | ||
355 | extern struct errdesc scm_errmsgs[]; | |
356 | ||
357 | \f | |
358 | ||
359 | /* SCM_EXIT_SUCCESS is the default code to return from SCM if no errors | |
360 | * were encountered. SCM_EXIT_FAILURE is the default code to return from | |
361 | * SCM if errors were encountered. The return code can be explicitly | |
362 | * specified in a SCM program with (scm_quit <n>). | |
363 | */ | |
364 | ||
365 | #ifndef SCM_EXIT_SUCCESS | |
366 | #ifdef vms | |
367 | #define SCM_EXIT_SUCCESS 1 | |
368 | #else | |
369 | #define SCM_EXIT_SUCCESS 0 | |
370 | #endif /* def vms */ | |
371 | #endif /* ndef SCM_EXIT_SUCCESS */ | |
372 | #ifndef SCM_EXIT_FAILURE | |
373 | #ifdef vms | |
374 | #define SCM_EXIT_FAILURE 2 | |
375 | #else | |
376 | #define SCM_EXIT_FAILURE 1 | |
377 | #endif /* def vms */ | |
378 | #endif /* ndef SCM_EXIT_FAILURE */ | |
379 | ||
380 | ||
381 | ||
382 | \f | |
383 | #ifdef __STDC__ | |
384 | ||
385 | #else /* STDC */ | |
386 | ||
387 | #endif /* STDC */ | |
388 | ||
389 | ||
390 | #endif /* __SCMH */ |