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f0e9217a | 1 | /* Debugging extensions for Guile |
7dc6e754 | 2 | * Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation |
ee340120 MD |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2, or (at your option) | |
7 | * any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
16 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
17 | * Boston, MA 02111-1307 USA | |
ee340120 MD |
18 | * |
19 | * As a special exception, the Free Software Foundation gives permission | |
20 | * for additional uses of the text contained in its release of GUILE. | |
21 | * | |
22 | * The exception is that, if you link the GUILE library with other files | |
23 | * to produce an executable, this does not by itself cause the | |
24 | * resulting executable to be covered by the GNU General Public License. | |
25 | * Your use of that executable is in no way restricted on account of | |
26 | * linking the GUILE library code into it. | |
27 | * | |
28 | * This exception does not however invalidate any other reasons why | |
29 | * the executable file might be covered by the GNU General Public License. | |
30 | * | |
31 | * This exception applies only to the code released by the | |
32 | * Free Software Foundation under the name GUILE. If you copy | |
33 | * code from other Free Software Foundation releases into a copy of | |
34 | * GUILE, as the General Public License permits, the exception does | |
35 | * not apply to the code that you add in this way. To avoid misleading | |
36 | * anyone as to the status of such modified files, you must delete | |
37 | * this exception notice from them. | |
38 | * | |
39 | * If you write modifications of your own for GUILE, it is your choice | |
40 | * whether to permit this exception to apply to your modifications. | |
41 | * If you do not wish that, delete this exception notice. | |
42 | * | |
43 | * The author can be reached at djurfeldt@nada.kth.se | |
82892bed | 44 | * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */ |
f0e9217a MD |
45 | |
46 | #include <stdio.h> | |
47 | #include "_scm.h" | |
20e6290e | 48 | #include "eval.h" |
a6e350dd | 49 | #include "stackchk.h" |
20e6290e JB |
50 | #include "throw.h" |
51 | #include "genio.h" | |
41d3b325 | 52 | #include "macros.h" |
20e6290e JB |
53 | #include "smob.h" |
54 | #include "procprop.h" | |
55 | #include "srcprop.h" | |
56 | #include "alist.h" | |
57 | #include "continuations.h" | |
58 | #include "strports.h" | |
59 | #include "read.h" | |
60 | #include "feature.h" | |
260b1416 | 61 | #include "dynwind.h" |
f0e9217a | 62 | |
20e6290e | 63 | #include "debug.h" |
f0e9217a MD |
64 | \f |
65 | ||
66 | /* {Run time control of the debugging evaluator} | |
67 | */ | |
68 | ||
5e8d7fd4 | 69 | SCM_PROC (s_debug_options, "debug-options-interface", 0, 1, 0, scm_debug_options); |
1cc91f1b | 70 | |
f0e9217a | 71 | SCM |
5e8d7fd4 MD |
72 | scm_debug_options (setting) |
73 | SCM setting; | |
f0e9217a MD |
74 | { |
75 | SCM ans; | |
76 | SCM_DEFER_INTS; | |
5e8d7fd4 MD |
77 | ans = scm_options (setting, |
78 | scm_debug_opts, | |
79 | SCM_N_DEBUG_OPTIONS, | |
80 | s_debug_options); | |
f0e9217a | 81 | #ifndef SCM_RECKLESS |
5e8d7fd4 | 82 | if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE)) |
f0e9217a | 83 | { |
5e8d7fd4 | 84 | scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, s_debug_options); |
52859adf | 85 | scm_out_of_range (s_debug_options, setting); |
f0e9217a MD |
86 | } |
87 | #endif | |
5e8d7fd4 | 88 | SCM_RESET_DEBUG_MODE; |
a6e350dd | 89 | scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P; |
5e8d7fd4 | 90 | scm_debug_eframe_size = 2 * SCM_N_FRAMES; |
f0e9217a MD |
91 | SCM_ALLOW_INTS |
92 | return ans; | |
93 | } | |
94 | ||
260b1416 MD |
95 | SCM_PROC (s_with_traps, "with-traps", 1, 0, 0, scm_with_traps); |
96 | ||
97 | static void | |
98 | with_traps_before (void *data) | |
99 | { | |
100 | int *trap_flag = data; | |
101 | *trap_flag = SCM_TRAPS_P; | |
102 | SCM_TRAPS_P = 1; | |
103 | } | |
104 | ||
105 | static void | |
106 | with_traps_after (void *data) | |
107 | { | |
108 | int *trap_flag = data; | |
109 | SCM_TRAPS_P = *trap_flag; | |
110 | } | |
111 | ||
112 | static SCM | |
113 | with_traps_inner (void *data) | |
114 | { | |
115 | SCM thunk = (SCM) data; | |
116 | return scm_apply (thunk, SCM_EOL, SCM_EOL); | |
117 | } | |
1cc91f1b | 118 | |
f0e9217a | 119 | SCM |
260b1416 | 120 | scm_with_traps (SCM thunk) |
f0e9217a | 121 | { |
260b1416 MD |
122 | int trap_flag; |
123 | SCM_ASSERT (SCM_NFALSEP (scm_thunk_p (thunk)), | |
124 | thunk, | |
125 | SCM_ARG1, | |
126 | s_with_traps); | |
127 | return scm_internal_dynamic_wind (with_traps_before, | |
128 | with_traps_inner, | |
129 | with_traps_after, | |
130 | (void *) thunk, | |
131 | &trap_flag); | |
f0e9217a MD |
132 | } |
133 | ||
134 | \f | |
135 | static SCM scm_i_source, scm_i_more; | |
136 | static SCM scm_i_proc, scm_i_args, scm_i_eval_args; | |
137 | static SCM scm_i_procname; | |
138 | ||
139 | /* {Memoized Source} | |
140 | */ | |
141 | ||
142 | long scm_tc16_memoized; | |
143 | ||
1cc91f1b JB |
144 | |
145 | static int prinmemoized SCM_P ((SCM obj, SCM port, scm_print_state *pstate)); | |
146 | ||
f0e9217a | 147 | static int |
9882ea19 | 148 | prinmemoized (obj, port, pstate) |
f0e9217a MD |
149 | SCM obj; |
150 | SCM port; | |
9882ea19 | 151 | scm_print_state *pstate; |
f0e9217a | 152 | { |
9882ea19 | 153 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 154 | scm_puts ("#<memoized ", port); |
9882ea19 | 155 | SCM_SET_WRITINGP (pstate, 1); |
33b97402 MD |
156 | #ifdef GUILE_DEBUG |
157 | scm_iprin1 (SCM_MEMOIZED_EXP (obj), port, pstate); | |
158 | #else | |
9882ea19 | 159 | scm_iprin1 (scm_unmemoize (obj), port, pstate); |
33b97402 | 160 | #endif |
9882ea19 | 161 | SCM_SET_WRITINGP (pstate, writingp); |
b7f3516f | 162 | scm_putc ('>', port); |
f0e9217a MD |
163 | return 1; |
164 | } | |
165 | ||
166 | static scm_smobfuns memoizedsmob = | |
167 | {scm_markcdr, scm_free0, prinmemoized, 0}; | |
168 | ||
169 | SCM_PROC (s_memoized_p, "memoized?", 1, 0, 0, scm_memoized_p); | |
1cc91f1b | 170 | |
f0e9217a MD |
171 | SCM |
172 | scm_memoized_p (obj) | |
173 | SCM obj; | |
f0e9217a MD |
174 | { |
175 | return SCM_NIMP (obj) && SCM_MEMOIZEDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
176 | } | |
177 | ||
f0e9217a | 178 | SCM |
bba4bfdb | 179 | scm_make_memoized (exp, env) |
1cc91f1b JB |
180 | SCM exp; |
181 | SCM env; | |
f0e9217a | 182 | { |
6c179711 | 183 | /* *fixme* Check that env is a valid environment. */ |
f0e9217a | 184 | register SCM z, ans; |
f83e2737 | 185 | SCM_ENTER_A_SECTION; |
f0e9217a | 186 | SCM_NEWCELL (z); |
a6c64c3c | 187 | SCM_SETCDR (z, env); |
f83e2737 | 188 | SCM_SETCAR (z, exp); |
f0e9217a | 189 | SCM_NEWCELL (ans); |
a6c64c3c | 190 | SCM_SETCDR (ans, z); |
f83e2737 MD |
191 | SCM_SETCAR (ans, scm_tc16_memoized); |
192 | SCM_EXIT_A_SECTION; | |
f0e9217a MD |
193 | return ans; |
194 | } | |
195 | ||
33b97402 MD |
196 | #ifdef GUILE_DEBUG |
197 | /* | |
198 | * Some primitives for construction of memoized code | |
199 | * | |
200 | * - procedure: memcons CAR CDR [ENV] | |
201 | * | |
202 | * Construct a pair, encapsulated in a memoized object. | |
203 | * | |
204 | * The CAR and CDR can be either normal or memoized. If ENV isn't | |
205 | * specified, the top-level environment of the current module will | |
206 | * be assumed. All environments must match. | |
207 | * | |
208 | * - procedure: make-gloc VARIABLE [ENV] | |
209 | * | |
210 | * Return a gloc, encapsulated in a memoized object. | |
211 | * | |
212 | * (Glocs can't exist in normal list structures, since they will | |
213 | * be mistaken for structs.) | |
214 | * | |
215 | * - procedure: gloc? OBJECT | |
216 | * | |
217 | * Return #t if OBJECT is a memoized gloc. | |
218 | * | |
219 | * - procedure: make-iloc FRAME BINDING CDRP | |
220 | * | |
221 | * Return an iloc referring to frame no. FRAME, binding | |
222 | * no. BINDING. If CDRP is non-#f, the iloc is referring to a | |
223 | * frame consisting of a single pair, with the value stored in the | |
224 | * CDR. | |
225 | * | |
226 | * - procedure: iloc? OBJECT | |
227 | * | |
228 | * Return #t if OBJECT is an iloc. | |
229 | * | |
230 | * - procedure: mem->proc MEMOIZED | |
231 | * | |
232 | * Construct a closure from the memoized lambda expression MEMOIZED | |
233 | * | |
234 | * WARNING! The code is not copied! | |
235 | * | |
236 | * - procedure: proc->mem CLOSURE | |
237 | * | |
238 | * Turn the closure CLOSURE into a memoized object. | |
239 | * | |
240 | * WARNING! The code is not copied! | |
241 | * | |
242 | * - constant: SCM_IM_AND | |
243 | * - constant: SCM_IM_BEGIN | |
244 | * - constant: SCM_IM_CASE | |
245 | * - constant: SCM_IM_COND | |
246 | * - constant: SCM_IM_DO | |
247 | * - constant: SCM_IM_IF | |
248 | * - constant: SCM_IM_LAMBDA | |
249 | * - constant: SCM_IM_LET | |
250 | * - constant: SCM_IM_LETSTAR | |
251 | * - constant: SCM_IM_LETREC | |
252 | * - constant: SCM_IM_OR | |
253 | * - constant: SCM_IM_QUOTE | |
254 | * - constant: SCM_IM_SET | |
255 | * - constant: SCM_IM_DEFINE | |
256 | * - constant: SCM_IM_APPLY | |
257 | * - constant: SCM_IM_CONT | |
258 | */ | |
259 | ||
260 | #include "variable.h" | |
261 | #include "procs.h" | |
262 | ||
263 | SCM_PROC (s_make_gloc, "make-gloc", 1, 1, 0, scm_make_gloc); | |
264 | ||
265 | SCM | |
266 | scm_make_gloc (var, env) | |
267 | SCM var; | |
268 | SCM env; | |
269 | { | |
270 | #if 1 /* Unsafe */ | |
271 | if (SCM_NIMP (var) && SCM_CONSP (var)) | |
272 | var = scm_cons (SCM_BOOL_F, var); | |
273 | else | |
274 | #endif | |
275 | SCM_ASSERT (SCM_NIMP (var) && SCM_VARIABLEP (var), | |
276 | var, | |
277 | SCM_ARG1, | |
278 | s_make_gloc); | |
279 | if (SCM_UNBNDP (env)) | |
280 | env = scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var)); | |
281 | else | |
282 | SCM_ASSERT (SCM_NULLP (env) || (SCM_NIMP (env) && SCM_CONSP (env)), | |
283 | env, | |
284 | SCM_ARG2, | |
285 | s_make_gloc); | |
286 | return scm_make_memoized (SCM_VARVCELL (var) + 1, env); | |
287 | } | |
288 | ||
289 | SCM_PROC (s_gloc_p, "gloc?", 1, 0, 0, scm_gloc_p); | |
290 | ||
291 | SCM | |
292 | scm_gloc_p (obj) | |
293 | SCM obj; | |
294 | { | |
295 | return ((SCM_NIMP (obj) | |
296 | && SCM_MEMOIZEDP (obj) | |
297 | && (SCM_MEMOIZED_EXP (obj) & 7) == 1) | |
298 | ? SCM_BOOL_T | |
299 | : SCM_BOOL_F); | |
300 | } | |
301 | ||
302 | SCM_PROC (s_make_iloc, "make-iloc", 3, 0, 0, scm_make_iloc); | |
303 | ||
304 | SCM | |
305 | scm_make_iloc (frame, binding, cdrp) | |
306 | SCM frame; | |
307 | SCM binding; | |
308 | SCM cdrp; | |
309 | { | |
310 | SCM_ASSERT (SCM_INUMP (frame), frame, SCM_ARG1, s_make_iloc); | |
311 | SCM_ASSERT (SCM_INUMP (binding), binding, SCM_ARG2, s_make_iloc); | |
312 | return (SCM_ILOC00 | |
313 | + SCM_IFRINC * SCM_INUM (frame) | |
314 | + (SCM_NFALSEP (cdrp) ? SCM_ICDR : 0) | |
315 | + SCM_IDINC * SCM_INUM (binding)); | |
316 | } | |
317 | ||
318 | SCM_PROC (s_iloc_p, "iloc?", 1, 0, 0, scm_iloc_p); | |
319 | ||
320 | SCM | |
321 | scm_iloc_p (obj) | |
322 | SCM obj; | |
323 | { | |
324 | return SCM_ILOCP (obj) ? SCM_BOOL_T : SCM_BOOL_F; | |
325 | } | |
326 | ||
327 | SCM_PROC (s_memcons, "memcons", 2, 1, 0, scm_memcons); | |
328 | ||
329 | SCM | |
330 | scm_memcons (car, cdr, env) | |
331 | SCM car; | |
332 | SCM cdr; | |
333 | SCM env; | |
334 | { | |
335 | if (SCM_NIMP (car) && SCM_MEMOIZEDP (car)) | |
336 | { | |
337 | /*fixme* environments may be two different but equal top-level envs */ | |
338 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (car) != env) | |
339 | scm_misc_error (s_memcons, | |
340 | "environment mismatch arg1 <-> arg3", | |
341 | scm_cons2 (car, env, SCM_EOL)); | |
342 | else | |
343 | env = SCM_MEMOIZED_ENV (car); | |
344 | car = SCM_MEMOIZED_EXP (car); | |
345 | } | |
346 | if (SCM_NIMP (cdr) && SCM_MEMOIZEDP (cdr)) | |
347 | { | |
348 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (cdr) != env) | |
349 | scm_misc_error (s_memcons, | |
350 | "environment mismatch arg2 <-> arg3", | |
351 | scm_cons2 (cdr, env, SCM_EOL)); | |
352 | else | |
353 | env = SCM_MEMOIZED_ENV (cdr); | |
354 | cdr = SCM_MEMOIZED_EXP (cdr); | |
355 | } | |
356 | if (SCM_UNBNDP (env)) | |
357 | env = scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var)); | |
358 | else | |
359 | SCM_ASSERT (SCM_NULLP (env) || (SCM_NIMP (env) && SCM_CONSP (env)), | |
360 | env, | |
361 | SCM_ARG3, | |
362 | s_make_iloc); | |
363 | return scm_make_memoized (scm_cons (car, cdr), env); | |
364 | } | |
365 | ||
366 | SCM_PROC (s_mem_to_proc, "mem->proc", 1, 0, 0, scm_mem_to_proc); | |
367 | ||
368 | SCM | |
369 | scm_mem_to_proc (obj) | |
370 | SCM obj; | |
371 | { | |
372 | SCM env; | |
373 | SCM_ASSERT (SCM_NIMP (obj) && SCM_MEMOIZEDP (obj), | |
374 | obj, | |
375 | SCM_ARG1, | |
376 | s_mem_to_proc); | |
377 | env = SCM_MEMOIZED_ENV (obj); | |
378 | obj = SCM_MEMOIZED_EXP (obj); | |
379 | if (!(SCM_NIMP (obj) && SCM_CAR (obj) == SCM_IM_LAMBDA)) | |
380 | scm_misc_error (s_mem_to_proc, | |
381 | "expected lambda expression", | |
382 | scm_cons (obj, SCM_EOL)); | |
383 | return scm_closure (SCM_CDR (obj), env); | |
384 | } | |
385 | ||
386 | SCM_PROC (s_proc_to_mem, "proc->mem", 1, 0, 0, scm_proc_to_mem); | |
387 | ||
388 | SCM | |
389 | scm_proc_to_mem (obj) | |
390 | SCM obj; | |
391 | { | |
392 | SCM_ASSERT (SCM_NIMP (obj) && SCM_CLOSUREP (obj), | |
393 | obj, | |
394 | SCM_ARG1, | |
395 | s_proc_to_mem); | |
396 | return scm_make_memoized (scm_cons (SCM_IM_LAMBDA, SCM_CODE (obj)), | |
397 | SCM_ENV (obj)); | |
398 | } | |
399 | ||
400 | #endif /* GUILE_DEBUG */ | |
401 | ||
f0e9217a | 402 | SCM_PROC (s_unmemoize, "unmemoize", 1, 0, 0, scm_unmemoize); |
1cc91f1b | 403 | |
f0e9217a MD |
404 | SCM |
405 | scm_unmemoize (m) | |
406 | SCM m; | |
f0e9217a | 407 | { |
6c179711 | 408 | SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize); |
bfe3154c | 409 | return scm_unmemocopy (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m)); |
f0e9217a MD |
410 | } |
411 | ||
412 | SCM_PROC (s_memoized_environment, "memoized-environment", 1, 0, 0, scm_memoized_environment); | |
1cc91f1b | 413 | |
f0e9217a MD |
414 | SCM |
415 | scm_memoized_environment (m) | |
416 | SCM m; | |
f0e9217a | 417 | { |
6c179711 | 418 | SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize); |
bfe3154c | 419 | return SCM_MEMOIZED_ENV (m); |
f0e9217a MD |
420 | } |
421 | ||
422 | SCM_PROC (s_procedure_name, "procedure-name", 1, 0, 0, scm_procedure_name); | |
1cc91f1b | 423 | |
f0e9217a MD |
424 | SCM |
425 | scm_procedure_name (proc) | |
426 | SCM proc; | |
f0e9217a MD |
427 | { |
428 | SCM_ASSERT(scm_procedure_p (proc) == SCM_BOOL_T, | |
429 | proc, | |
430 | SCM_ARG1, | |
431 | s_procedure_name); | |
432 | switch (SCM_TYP7 (proc)) { | |
433 | case scm_tcs_closures: | |
c6b8a41a | 434 | case scm_tc7_cclo: |
f0e9217a MD |
435 | { |
436 | SCM name = scm_procedure_property (proc, scm_i_name); | |
437 | #if 0 | |
80ea260c | 438 | /* Source property scm_i_procname not implemented yet... */ |
f0e9217a MD |
439 | SCM name = scm_source_property (SCM_CAR (SCM_CDR (SCM_CODE (proc))), scm_i_procname); |
440 | if (SCM_FALSEP (name)) | |
441 | name = scm_procedure_property (proc, scm_i_name); | |
442 | #endif | |
80ea260c MD |
443 | if (SCM_FALSEP (name)) |
444 | name = scm_procedure_property (proc, scm_i_inner_name); | |
f0e9217a MD |
445 | return name; |
446 | } | |
447 | case scm_tcs_subrs: | |
448 | return SCM_SNAME (proc); | |
449 | default: | |
450 | return SCM_BOOL_F; | |
451 | } | |
452 | } | |
453 | ||
454 | SCM_PROC (s_procedure_source, "procedure-source", 1, 0, 0, scm_procedure_source); | |
1cc91f1b | 455 | |
f0e9217a MD |
456 | SCM |
457 | scm_procedure_source (proc) | |
458 | SCM proc; | |
f0e9217a MD |
459 | { |
460 | SCM_ASSERT(SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_source); | |
461 | switch (SCM_TYP7 (proc)) { | |
462 | case scm_tcs_closures: | |
463 | { | |
464 | SCM src; | |
465 | src = scm_source_property (SCM_CDR (SCM_CODE (proc)), scm_i_copy); | |
466 | if (src != SCM_BOOL_F) | |
467 | return scm_cons2 (scm_i_lambda, SCM_CAR (SCM_CODE (proc)), src); | |
468 | src = SCM_CODE (proc); | |
469 | return scm_cons (scm_i_lambda, | |
470 | scm_unmemocopy (src, | |
e2806c10 | 471 | SCM_EXTEND_ENV (SCM_CAR (src), |
f0e9217a MD |
472 | SCM_EOL, |
473 | SCM_ENV (proc)))); | |
474 | } | |
475 | case scm_tc7_contin: | |
476 | case scm_tcs_subrs: | |
477 | #ifdef CCLO | |
478 | case scm_tc7_cclo: | |
479 | #endif | |
480 | /* It would indeed be a nice thing if we supplied source even for | |
481 | built in procedures! */ | |
482 | return scm_procedure_property (proc, scm_i_source); | |
483 | default: | |
484 | scm_wta (proc, (char *) SCM_ARG1, s_procedure_source); | |
485 | return 0; | |
486 | } | |
487 | } | |
488 | ||
489 | SCM_PROC (s_procedure_environment, "procedure-environment", 1, 0, 0, scm_procedure_environment); | |
1cc91f1b | 490 | |
f0e9217a MD |
491 | SCM |
492 | scm_procedure_environment (proc) | |
493 | SCM proc; | |
f0e9217a MD |
494 | { |
495 | SCM_ASSERT (SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_environment); | |
496 | switch (SCM_TYP7 (proc)) { | |
497 | case scm_tcs_closures: | |
498 | return SCM_ENV (proc); | |
499 | case scm_tc7_contin: | |
500 | case scm_tcs_subrs: | |
501 | #ifdef CCLO | |
502 | case scm_tc7_cclo: | |
503 | #endif | |
504 | return SCM_EOL; | |
505 | default: | |
506 | scm_wta (proc, (char *) SCM_ARG1, s_procedure_environment); | |
507 | return 0; | |
508 | } | |
509 | } | |
510 | ||
bfe3154c | 511 | \f |
f0e9217a MD |
512 | |
513 | /* Eval in a local environment. We would like to have the ability to | |
e38ecb05 MD |
514 | * evaluate in a specified local environment, but due to the |
515 | * memoization this isn't normally possible. We solve it by copying | |
516 | * the code before evaluating. One solution would be to have eval.c | |
517 | * generate yet another evaluator. They are not very big actually. | |
f0e9217a | 518 | */ |
6c179711 | 519 | SCM_PROC (s_local_eval, "local-eval", 1, 1, 0, scm_local_eval); |
1cc91f1b | 520 | |
f0e9217a MD |
521 | SCM |
522 | scm_local_eval (exp, env) | |
523 | SCM exp; | |
524 | SCM env; | |
f0e9217a | 525 | { |
6c179711 MD |
526 | if (SCM_UNBNDP (env)) |
527 | { | |
b210cb73 | 528 | SCM_ASSERT (SCM_NIMP (exp) && SCM_MEMOIZEDP (exp), exp, SCM_ARG1, s_local_eval); |
6c179711 MD |
529 | return scm_eval_3 (SCM_MEMOIZED_EXP (exp), 0, SCM_MEMOIZED_ENV (exp)); |
530 | } | |
f0e9217a MD |
531 | return scm_eval_3 (exp, 1, env); |
532 | } | |
533 | ||
bfe3154c | 534 | SCM |
9fa2c7b1 MD |
535 | scm_start_stack (id, exp, env) |
536 | SCM id; | |
bfe3154c MD |
537 | SCM exp; |
538 | SCM env; | |
539 | { | |
540 | SCM answer; | |
c6b8a41a | 541 | scm_debug_frame vframe; |
c0ab1b8d | 542 | scm_debug_info vframe_vect_body; |
9fa2c7b1 MD |
543 | vframe.prev = scm_last_debug_frame; |
544 | vframe.status = SCM_VOIDFRAME; | |
545 | vframe.vect = &vframe_vect_body; | |
546 | vframe.vect[0].id = id; | |
547 | scm_last_debug_frame = &vframe; | |
cb412265 | 548 | answer = scm_eval_3 (exp, 1, env); |
9fa2c7b1 MD |
549 | scm_last_debug_frame = vframe.prev; |
550 | return answer; | |
551 | } | |
552 | ||
553 | static char s_start_stack[] = "start-stack"; | |
8a04c1a2 | 554 | static SCM |
9fa2c7b1 MD |
555 | scm_m_start_stack (exp, env) |
556 | SCM exp; | |
557 | SCM env; | |
558 | { | |
bfe3154c | 559 | exp = SCM_CDR (exp); |
c6b8a41a | 560 | SCM_ASSERT (SCM_NIMP (exp) |
e38ecb05 | 561 | && SCM_ECONSP (exp) |
c6b8a41a | 562 | && SCM_NIMP (SCM_CDR (exp)) |
e38ecb05 | 563 | && SCM_ECONSP (SCM_CDR (exp)) |
c6b8a41a | 564 | && SCM_NULLP (SCM_CDDR (exp)), |
bfe3154c MD |
565 | exp, |
566 | SCM_WNA, | |
567 | s_start_stack); | |
9fa2c7b1 | 568 | return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env); |
bfe3154c | 569 | } |
f0e9217a MD |
570 | |
571 | /* {Debug Objects} | |
572 | * | |
573 | * The debugging evaluator throws these on frame traps. | |
574 | */ | |
575 | ||
576 | long scm_tc16_debugobj; | |
577 | ||
1cc91f1b JB |
578 | static int prindebugobj SCM_P ((SCM obj, SCM port, scm_print_state *pstate)); |
579 | ||
f0e9217a | 580 | static int |
1cc91f1b | 581 | prindebugobj (obj, port, pstate) |
9882ea19 MD |
582 | SCM obj; |
583 | SCM port; | |
584 | scm_print_state *pstate; | |
f0e9217a | 585 | { |
b7f3516f | 586 | scm_puts ("#<debug-object ", port); |
bfe3154c | 587 | scm_intprint (SCM_DEBUGOBJ_FRAME (obj), 16, port); |
b7f3516f | 588 | scm_putc ('>', port); |
f0e9217a MD |
589 | return 1; |
590 | } | |
591 | ||
592 | static scm_smobfuns debugobjsmob = | |
dc53f026 | 593 | {0, scm_free0, prindebugobj, 0}; |
f0e9217a MD |
594 | |
595 | SCM_PROC (s_debug_object_p, "debug-object?", 1, 0, 0, scm_debug_object_p); | |
1cc91f1b | 596 | |
f0e9217a MD |
597 | SCM |
598 | scm_debug_object_p (obj) | |
599 | SCM obj; | |
f0e9217a | 600 | { |
bfe3154c | 601 | return SCM_NIMP (obj) && SCM_DEBUGOBJP (obj) ? SCM_BOOL_T : SCM_BOOL_F; |
f0e9217a MD |
602 | } |
603 | ||
1cc91f1b | 604 | |
f0e9217a MD |
605 | SCM |
606 | scm_make_debugobj (frame) | |
607 | scm_debug_frame *frame; | |
f0e9217a MD |
608 | { |
609 | register SCM z; | |
f0e9217a | 610 | SCM_NEWCELL (z); |
f83e2737 | 611 | SCM_ENTER_A_SECTION; |
a6c64c3c | 612 | SCM_SET_DEBUGOBJ_FRAME (z, (SCM) frame); |
f83e2737 MD |
613 | SCM_SETCAR (z, scm_tc16_debugobj); |
614 | SCM_EXIT_A_SECTION; | |
f0e9217a MD |
615 | return z; |
616 | } | |
617 | ||
f0e9217a MD |
618 | \f |
619 | ||
fe57f652 MD |
620 | /* Undocumented debugging procedure */ |
621 | #ifdef GUILE_DEBUG | |
e38ecb05 MD |
622 | SCM_PROC (s_debug_hang, "debug-hang", 0, 1, 0, scm_debug_hang); |
623 | ||
624 | SCM | |
625 | scm_debug_hang (obj) | |
626 | SCM obj; | |
627 | { | |
628 | int go = 0; | |
629 | while (!go) ; | |
630 | return SCM_UNSPECIFIED; | |
631 | } | |
fe57f652 | 632 | #endif |
e38ecb05 MD |
633 | |
634 | \f | |
635 | ||
f0e9217a MD |
636 | void |
637 | scm_init_debug () | |
638 | { | |
5e8d7fd4 | 639 | scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS); |
ee340120 | 640 | |
f0e9217a MD |
641 | scm_tc16_memoized = scm_newsmob (&memoizedsmob); |
642 | scm_tc16_debugobj = scm_newsmob (&debugobjsmob); | |
643 | ||
644 | scm_i_procname = SCM_CAR (scm_sysintern ("procname", SCM_UNDEFINED)); | |
645 | scm_i_more = SCM_CAR (scm_sysintern ("...", SCM_UNDEFINED)); | |
646 | scm_i_source = SCM_CAR (scm_sysintern ("source", SCM_UNDEFINED)); | |
647 | scm_i_proc = SCM_CAR (scm_sysintern ("proc", SCM_UNDEFINED)); | |
648 | scm_i_args = SCM_CAR (scm_sysintern ("args", SCM_UNDEFINED)); | |
649 | scm_i_eval_args = SCM_CAR (scm_sysintern ("eval-args", SCM_UNDEFINED)); | |
650 | ||
bfe3154c | 651 | scm_make_synt (s_start_stack, scm_makacro, scm_m_start_stack); |
33b97402 MD |
652 | |
653 | #ifdef GUILE_DEBUG | |
654 | scm_sysintern ("SCM_IM_AND", SCM_IM_AND); | |
655 | scm_sysintern ("SCM_IM_BEGIN", SCM_IM_BEGIN); | |
656 | scm_sysintern ("SCM_IM_CASE", SCM_IM_CASE); | |
657 | scm_sysintern ("SCM_IM_COND", SCM_IM_COND); | |
658 | scm_sysintern ("SCM_IM_DO", SCM_IM_DO); | |
659 | scm_sysintern ("SCM_IM_IF", SCM_IM_IF); | |
660 | scm_sysintern ("SCM_IM_LAMBDA", SCM_IM_LAMBDA); | |
661 | scm_sysintern ("SCM_IM_LET", SCM_IM_LET); | |
662 | scm_sysintern ("SCM_IM_LETSTAR", SCM_IM_LETSTAR); | |
663 | scm_sysintern ("SCM_IM_LETREC", SCM_IM_LETREC); | |
664 | scm_sysintern ("SCM_IM_OR", SCM_IM_OR); | |
665 | scm_sysintern ("SCM_IM_QUOTE", SCM_IM_QUOTE); | |
666 | scm_sysintern ("SCM_IM_SET", SCM_IM_SET); | |
667 | scm_sysintern ("SCM_IM_DEFINE", SCM_IM_DEFINE); | |
668 | scm_sysintern ("SCM_IM_APPLY", SCM_IM_APPLY); | |
669 | scm_sysintern ("SCM_IM_CONT", SCM_IM_CONT); | |
670 | #endif | |
f0e9217a MD |
671 | scm_add_feature ("debug-extensions"); |
672 | ||
673 | #include "debug.x" | |
674 | } |