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63c51b9a | 1 | /* Debugging extensions for Guile |
78a0461a | 2 | * Copyright (C) 1995, 1996, 1997, 1998, 1999 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 | 45 | |
1bbd0b84 GB |
46 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, |
47 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
48 | ||
49 | ||
f0e9217a MD |
50 | #include <stdio.h> |
51 | #include "_scm.h" | |
20e6290e | 52 | #include "eval.h" |
a6e350dd | 53 | #include "stackchk.h" |
20e6290e JB |
54 | #include "throw.h" |
55 | #include "genio.h" | |
41d3b325 | 56 | #include "macros.h" |
20e6290e JB |
57 | #include "smob.h" |
58 | #include "procprop.h" | |
59 | #include "srcprop.h" | |
60 | #include "alist.h" | |
61 | #include "continuations.h" | |
62 | #include "strports.h" | |
63 | #include "read.h" | |
64 | #include "feature.h" | |
260b1416 | 65 | #include "dynwind.h" |
650de6d7 | 66 | #include "modules.h" |
f0e9217a | 67 | |
1bbd0b84 | 68 | #include "scm_validate.h" |
20e6290e | 69 | #include "debug.h" |
f0e9217a MD |
70 | \f |
71 | ||
72 | /* {Run time control of the debugging evaluator} | |
73 | */ | |
74 | ||
1bbd0b84 GB |
75 | GUILE_PROC (scm_debug_options, "debug-options-interface", 0, 1, 0, |
76 | (SCM setting), | |
77 | "") | |
78 | #define FUNC_NAME s_scm_debug_options | |
f0e9217a MD |
79 | { |
80 | SCM ans; | |
81 | SCM_DEFER_INTS; | |
5e8d7fd4 MD |
82 | ans = scm_options (setting, |
83 | scm_debug_opts, | |
84 | SCM_N_DEBUG_OPTIONS, | |
1bbd0b84 | 85 | FUNC_NAME); |
f0e9217a | 86 | #ifndef SCM_RECKLESS |
5e8d7fd4 | 87 | if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE)) |
f0e9217a | 88 | { |
1bbd0b84 GB |
89 | scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, FUNC_NAME); |
90 | scm_out_of_range (FUNC_NAME, setting); | |
f0e9217a MD |
91 | } |
92 | #endif | |
5e8d7fd4 | 93 | SCM_RESET_DEBUG_MODE; |
a6e350dd | 94 | scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P; |
5e8d7fd4 | 95 | scm_debug_eframe_size = 2 * SCM_N_FRAMES; |
bfc69694 | 96 | SCM_ALLOW_INTS; |
f0e9217a MD |
97 | return ans; |
98 | } | |
1bbd0b84 | 99 | #undef FUNC_NAME |
260b1416 MD |
100 | |
101 | static void | |
102 | with_traps_before (void *data) | |
103 | { | |
104 | int *trap_flag = data; | |
105 | *trap_flag = SCM_TRAPS_P; | |
106 | SCM_TRAPS_P = 1; | |
107 | } | |
108 | ||
109 | static void | |
110 | with_traps_after (void *data) | |
111 | { | |
112 | int *trap_flag = data; | |
113 | SCM_TRAPS_P = *trap_flag; | |
114 | } | |
115 | ||
116 | static SCM | |
117 | with_traps_inner (void *data) | |
118 | { | |
119 | SCM thunk = (SCM) data; | |
120 | return scm_apply (thunk, SCM_EOL, SCM_EOL); | |
121 | } | |
1cc91f1b | 122 | |
1bbd0b84 GB |
123 | GUILE_PROC (scm_with_traps, "with-traps", 1, 0, 0, |
124 | (SCM thunk), | |
125 | "") | |
126 | #define FUNC_NAME s_scm_with_traps | |
f0e9217a | 127 | { |
260b1416 | 128 | int trap_flag; |
1bbd0b84 | 129 | SCM_VALIDATE_THUNK(1,thunk); |
260b1416 MD |
130 | return scm_internal_dynamic_wind (with_traps_before, |
131 | with_traps_inner, | |
132 | with_traps_after, | |
133 | (void *) thunk, | |
134 | &trap_flag); | |
f0e9217a | 135 | } |
1bbd0b84 | 136 | #undef FUNC_NAME |
f0e9217a MD |
137 | |
138 | \f | |
63c51b9a MD |
139 | static SCM scm_sym_source, scm_sym_dots; |
140 | static SCM scm_sym_procname; | |
f0e9217a MD |
141 | |
142 | /* {Memoized Source} | |
143 | */ | |
144 | ||
145 | long scm_tc16_memoized; | |
146 | ||
1cc91f1b | 147 | |
f0e9217a | 148 | static int |
1bbd0b84 | 149 | prinmemoized (SCM obj,SCM port,scm_print_state *pstate) |
f0e9217a | 150 | { |
9882ea19 | 151 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 152 | scm_puts ("#<memoized ", port); |
9882ea19 | 153 | SCM_SET_WRITINGP (pstate, 1); |
33b97402 MD |
154 | #ifdef GUILE_DEBUG |
155 | scm_iprin1 (SCM_MEMOIZED_EXP (obj), port, pstate); | |
156 | #else | |
9882ea19 | 157 | scm_iprin1 (scm_unmemoize (obj), port, pstate); |
33b97402 | 158 | #endif |
9882ea19 | 159 | SCM_SET_WRITINGP (pstate, writingp); |
b7f3516f | 160 | scm_putc ('>', port); |
f0e9217a MD |
161 | return 1; |
162 | } | |
163 | ||
1bbd0b84 GB |
164 | GUILE_PROC (scm_memoized_p, "memoized?", 1, 0, 0, |
165 | (SCM obj), | |
166 | "") | |
167 | #define FUNC_NAME s_scm_memoized_p | |
f0e9217a | 168 | { |
0c95b57d | 169 | return SCM_BOOL(SCM_MEMOIZEDP (obj)); |
f0e9217a | 170 | } |
1bbd0b84 | 171 | #undef FUNC_NAME |
f0e9217a | 172 | |
f0e9217a | 173 | SCM |
1bbd0b84 | 174 | scm_make_memoized (SCM exp, SCM env) |
f0e9217a | 175 | { |
6c179711 | 176 | /* *fixme* Check that env is a valid environment. */ |
f0e9217a | 177 | register SCM z, ans; |
f83e2737 | 178 | SCM_ENTER_A_SECTION; |
23a62151 MD |
179 | SCM_NEWSMOB (z, exp, env); |
180 | SCM_NEWSMOB (ans, scm_tc16_memoized, z); | |
f83e2737 | 181 | SCM_EXIT_A_SECTION; |
f0e9217a MD |
182 | return ans; |
183 | } | |
184 | ||
33b97402 MD |
185 | #ifdef GUILE_DEBUG |
186 | /* | |
187 | * Some primitives for construction of memoized code | |
188 | * | |
189 | * - procedure: memcons CAR CDR [ENV] | |
190 | * | |
191 | * Construct a pair, encapsulated in a memoized object. | |
192 | * | |
193 | * The CAR and CDR can be either normal or memoized. If ENV isn't | |
194 | * specified, the top-level environment of the current module will | |
195 | * be assumed. All environments must match. | |
196 | * | |
197 | * - procedure: make-gloc VARIABLE [ENV] | |
198 | * | |
199 | * Return a gloc, encapsulated in a memoized object. | |
200 | * | |
201 | * (Glocs can't exist in normal list structures, since they will | |
202 | * be mistaken for structs.) | |
203 | * | |
204 | * - procedure: gloc? OBJECT | |
205 | * | |
206 | * Return #t if OBJECT is a memoized gloc. | |
207 | * | |
208 | * - procedure: make-iloc FRAME BINDING CDRP | |
209 | * | |
210 | * Return an iloc referring to frame no. FRAME, binding | |
211 | * no. BINDING. If CDRP is non-#f, the iloc is referring to a | |
212 | * frame consisting of a single pair, with the value stored in the | |
213 | * CDR. | |
214 | * | |
215 | * - procedure: iloc? OBJECT | |
216 | * | |
217 | * Return #t if OBJECT is an iloc. | |
218 | * | |
219 | * - procedure: mem->proc MEMOIZED | |
220 | * | |
221 | * Construct a closure from the memoized lambda expression MEMOIZED | |
222 | * | |
223 | * WARNING! The code is not copied! | |
224 | * | |
225 | * - procedure: proc->mem CLOSURE | |
226 | * | |
227 | * Turn the closure CLOSURE into a memoized object. | |
228 | * | |
229 | * WARNING! The code is not copied! | |
230 | * | |
231 | * - constant: SCM_IM_AND | |
232 | * - constant: SCM_IM_BEGIN | |
233 | * - constant: SCM_IM_CASE | |
234 | * - constant: SCM_IM_COND | |
235 | * - constant: SCM_IM_DO | |
236 | * - constant: SCM_IM_IF | |
237 | * - constant: SCM_IM_LAMBDA | |
238 | * - constant: SCM_IM_LET | |
239 | * - constant: SCM_IM_LETSTAR | |
240 | * - constant: SCM_IM_LETREC | |
241 | * - constant: SCM_IM_OR | |
242 | * - constant: SCM_IM_QUOTE | |
243 | * - constant: SCM_IM_SET | |
244 | * - constant: SCM_IM_DEFINE | |
245 | * - constant: SCM_IM_APPLY | |
246 | * - constant: SCM_IM_CONT | |
bbab09f6 | 247 | * - constant: SCM_IM_DISPATCH |
33b97402 MD |
248 | */ |
249 | ||
250 | #include "variable.h" | |
251 | #include "procs.h" | |
252 | ||
1bbd0b84 GB |
253 | GUILE_PROC (scm_make_gloc, "make-gloc", 1, 1, 0, |
254 | (SCM var, SCM env), | |
255 | "") | |
256 | #define FUNC_NAME s_scm_make_gloc | |
33b97402 MD |
257 | { |
258 | #if 1 /* Unsafe */ | |
0c95b57d | 259 | if (SCM_CONSP (var)) |
33b97402 MD |
260 | var = scm_cons (SCM_BOOL_F, var); |
261 | else | |
262 | #endif | |
1bbd0b84 | 263 | SCM_VALIDATE_VARIABLE(1,var); |
33b97402 MD |
264 | if (SCM_UNBNDP (env)) |
265 | env = scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var)); | |
266 | else | |
1bbd0b84 | 267 | SCM_VALIDATE_NULLORCONS(2,env); |
33b97402 MD |
268 | return scm_make_memoized (SCM_VARVCELL (var) + 1, env); |
269 | } | |
1bbd0b84 | 270 | #undef FUNC_NAME |
33b97402 | 271 | |
1bbd0b84 GB |
272 | GUILE_PROC (scm_gloc_p, "gloc?", 1, 0, 0, |
273 | (SCM obj), | |
274 | "") | |
275 | #define FUNC_NAME s_scm_gloc_p | |
33b97402 | 276 | { |
1bbd0b84 GB |
277 | return SCM_BOOL((SCM_NIMP (obj) |
278 | && SCM_MEMOIZEDP (obj) | |
279 | && (SCM_MEMOIZED_EXP (obj) & 7) == 1)); | |
33b97402 | 280 | } |
1bbd0b84 | 281 | #undef FUNC_NAME |
33b97402 | 282 | |
1bbd0b84 GB |
283 | GUILE_PROC (scm_make_iloc, "make-iloc", 3, 0, 0, |
284 | (SCM frame, SCM binding, SCM cdrp), | |
285 | "") | |
286 | #define FUNC_NAME s_scm_make_iloc | |
33b97402 | 287 | { |
1bbd0b84 | 288 | SCM_VALIDATE_INT(1,frame); |
5623a9b4 | 289 | SCM_VALIDATE_INT(2,binding); |
33b97402 MD |
290 | return (SCM_ILOC00 |
291 | + SCM_IFRINC * SCM_INUM (frame) | |
292 | + (SCM_NFALSEP (cdrp) ? SCM_ICDR : 0) | |
293 | + SCM_IDINC * SCM_INUM (binding)); | |
294 | } | |
1bbd0b84 | 295 | #undef FUNC_NAME |
33b97402 | 296 | |
1bbd0b84 GB |
297 | GUILE_PROC (scm_iloc_p, "iloc?", 1, 0, 0, |
298 | (SCM obj), | |
299 | "") | |
300 | #define FUNC_NAME s_scm_iGUILE_p | |
33b97402 | 301 | { |
1bbd0b84 | 302 | return SCM_BOOL(SCM_ILOCP (obj)); |
33b97402 | 303 | } |
1bbd0b84 | 304 | #undef FUNC_NAME |
33b97402 | 305 | |
1bbd0b84 GB |
306 | GUILE_PROC (scm_memcons, "memcons", 2, 1, 0, |
307 | (SCM car, SCM cdr, SCM env), | |
308 | "") | |
309 | #define FUNC_NAME s_scm_memcons | |
33b97402 | 310 | { |
0c95b57d | 311 | if (SCM_MEMOIZEDP (car)) |
33b97402 MD |
312 | { |
313 | /*fixme* environments may be two different but equal top-level envs */ | |
314 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (car) != env) | |
e8e9b690 | 315 | SCM_MISC_ERROR ("environment mismatch arg1 <-> arg3", |
33b97402 MD |
316 | scm_cons2 (car, env, SCM_EOL)); |
317 | else | |
318 | env = SCM_MEMOIZED_ENV (car); | |
319 | car = SCM_MEMOIZED_EXP (car); | |
320 | } | |
0c95b57d | 321 | if (SCM_MEMOIZEDP (cdr)) |
33b97402 MD |
322 | { |
323 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (cdr) != env) | |
e8e9b690 | 324 | SCM_MISC_ERROR ("environment mismatch arg2 <-> arg3", |
33b97402 MD |
325 | scm_cons2 (cdr, env, SCM_EOL)); |
326 | else | |
327 | env = SCM_MEMOIZED_ENV (cdr); | |
328 | cdr = SCM_MEMOIZED_EXP (cdr); | |
329 | } | |
330 | if (SCM_UNBNDP (env)) | |
331 | env = scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var)); | |
332 | else | |
e8e9b690 | 333 | SCM_VALIDATE_NULLORCONS(3,env); |
33b97402 MD |
334 | return scm_make_memoized (scm_cons (car, cdr), env); |
335 | } | |
1bbd0b84 | 336 | #undef FUNC_NAME |
33b97402 | 337 | |
1bbd0b84 GB |
338 | GUILE_PROC (scm_mem_to_proc, "mem->proc", 1, 0, 0, |
339 | (SCM obj), | |
340 | "") | |
341 | #define FUNC_NAME s_scm_mem_to_proc | |
33b97402 MD |
342 | { |
343 | SCM env; | |
1bbd0b84 | 344 | SCM_VALIDATE_MEMOIZED(1,obj); |
33b97402 MD |
345 | env = SCM_MEMOIZED_ENV (obj); |
346 | obj = SCM_MEMOIZED_EXP (obj); | |
347 | if (!(SCM_NIMP (obj) && SCM_CAR (obj) == SCM_IM_LAMBDA)) | |
e8e9b690 | 348 | SCM_MISC_ERROR ("expected lambda expression", |
33b97402 MD |
349 | scm_cons (obj, SCM_EOL)); |
350 | return scm_closure (SCM_CDR (obj), env); | |
351 | } | |
1bbd0b84 | 352 | #undef FUNC_NAME |
33b97402 | 353 | |
1bbd0b84 GB |
354 | GUILE_PROC (scm_proc_to_mem, "proc->mem", 1, 0, 0, |
355 | (SCM obj), | |
356 | "") | |
357 | #define FUNC_NAME s_scm_proc_to_mem | |
33b97402 | 358 | { |
5623a9b4 | 359 | SCM_VALIDATE_CLOSURE (1, obj); |
33b97402 MD |
360 | return scm_make_memoized (scm_cons (SCM_IM_LAMBDA, SCM_CODE (obj)), |
361 | SCM_ENV (obj)); | |
362 | } | |
1bbd0b84 | 363 | #undef FUNC_NAME |
33b97402 MD |
364 | |
365 | #endif /* GUILE_DEBUG */ | |
366 | ||
1bbd0b84 GB |
367 | GUILE_PROC (scm_unmemoize, "unmemoize", 1, 0, 0, |
368 | (SCM m), | |
369 | "") | |
370 | #define FUNC_NAME s_scm_unmemoize | |
f0e9217a | 371 | { |
1bbd0b84 | 372 | SCM_VALIDATE_MEMOIZED(1,m); |
bfe3154c | 373 | return scm_unmemocopy (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m)); |
f0e9217a | 374 | } |
1bbd0b84 | 375 | #undef FUNC_NAME |
f0e9217a | 376 | |
1bbd0b84 GB |
377 | GUILE_PROC (scm_memoized_environment, "memoized-environment", 1, 0, 0, |
378 | (SCM m), | |
379 | "") | |
380 | #define FUNC_NAME s_scm_memoized_environment | |
f0e9217a | 381 | { |
1bbd0b84 | 382 | SCM_VALIDATE_MEMOIZED(1,m); |
bfe3154c | 383 | return SCM_MEMOIZED_ENV (m); |
f0e9217a | 384 | } |
1bbd0b84 | 385 | #undef FUNC_NAME |
f0e9217a | 386 | |
1bbd0b84 GB |
387 | GUILE_PROC (scm_procedure_name, "procedure-name", 1, 0, 0, |
388 | (SCM proc), | |
389 | "") | |
390 | #define FUNC_NAME s_scm_procedure_name | |
f0e9217a | 391 | { |
1bbd0b84 | 392 | SCM_VALIDATE_PROC(1,proc); |
f0e9217a | 393 | switch (SCM_TYP7 (proc)) { |
a726dd9d MD |
394 | case scm_tcs_subrs: |
395 | return SCM_SNAME (proc); | |
396 | default: | |
f0e9217a | 397 | { |
63c51b9a | 398 | SCM name = scm_procedure_property (proc, scm_sym_name); |
f0e9217a | 399 | #if 0 |
63c51b9a MD |
400 | /* Source property scm_sym_procname not implemented yet... */ |
401 | SCM name = scm_source_property (SCM_CAR (SCM_CDR (SCM_CODE (proc))), scm_sym_procname); | |
f0e9217a | 402 | if (SCM_FALSEP (name)) |
63c51b9a | 403 | name = scm_procedure_property (proc, scm_sym_name); |
f0e9217a | 404 | #endif |
c75512d6 MD |
405 | if (SCM_FALSEP (name) && SCM_CLOSUREP (proc)) |
406 | name = scm_reverse_lookup (SCM_ENV (proc), proc); | |
f0e9217a MD |
407 | return name; |
408 | } | |
f0e9217a MD |
409 | } |
410 | } | |
1bbd0b84 | 411 | #undef FUNC_NAME |
f0e9217a | 412 | |
1bbd0b84 GB |
413 | GUILE_PROC (scm_procedure_source, "procedure-source", 1, 0, 0, |
414 | (SCM proc), | |
415 | "") | |
416 | #define FUNC_NAME s_scm_procedure_source | |
f0e9217a | 417 | { |
6b5a304f | 418 | SCM_VALIDATE_NIM (1,proc); |
f0e9217a MD |
419 | switch (SCM_TYP7 (proc)) { |
420 | case scm_tcs_closures: | |
421 | { | |
422 | SCM src; | |
63c51b9a | 423 | src = scm_source_property (SCM_CDR (SCM_CODE (proc)), scm_sym_copy); |
f0e9217a | 424 | if (src != SCM_BOOL_F) |
63c51b9a | 425 | return scm_cons2 (scm_sym_lambda, SCM_CAR (SCM_CODE (proc)), src); |
f0e9217a | 426 | src = SCM_CODE (proc); |
63c51b9a | 427 | return scm_cons (scm_sym_lambda, |
f0e9217a | 428 | scm_unmemocopy (src, |
e2806c10 | 429 | SCM_EXTEND_ENV (SCM_CAR (src), |
f0e9217a MD |
430 | SCM_EOL, |
431 | SCM_ENV (proc)))); | |
432 | } | |
433 | case scm_tc7_contin: | |
434 | case scm_tcs_subrs: | |
435 | #ifdef CCLO | |
436 | case scm_tc7_cclo: | |
437 | #endif | |
438 | /* It would indeed be a nice thing if we supplied source even for | |
439 | built in procedures! */ | |
63c51b9a | 440 | return scm_procedure_property (proc, scm_sym_source); |
f0e9217a | 441 | default: |
1bbd0b84 | 442 | SCM_WTA(1,proc); |
f0e9217a MD |
443 | return 0; |
444 | } | |
445 | } | |
1bbd0b84 | 446 | #undef FUNC_NAME |
f0e9217a | 447 | |
1bbd0b84 GB |
448 | GUILE_PROC (scm_procedure_environment, "procedure-environment", 1, 0, 0, |
449 | (SCM proc), | |
450 | "") | |
451 | #define FUNC_NAME s_scm_procedure_environment | |
f0e9217a | 452 | { |
6b5a304f | 453 | SCM_VALIDATE_NIM (1,proc); |
f0e9217a MD |
454 | switch (SCM_TYP7 (proc)) { |
455 | case scm_tcs_closures: | |
456 | return SCM_ENV (proc); | |
457 | case scm_tc7_contin: | |
458 | case scm_tcs_subrs: | |
459 | #ifdef CCLO | |
460 | case scm_tc7_cclo: | |
461 | #endif | |
462 | return SCM_EOL; | |
463 | default: | |
1bbd0b84 | 464 | SCM_WTA(1,proc); |
f0e9217a MD |
465 | return 0; |
466 | } | |
467 | } | |
1bbd0b84 | 468 | #undef FUNC_NAME |
f0e9217a | 469 | |
bfe3154c | 470 | \f |
f0e9217a MD |
471 | |
472 | /* Eval in a local environment. We would like to have the ability to | |
e38ecb05 MD |
473 | * evaluate in a specified local environment, but due to the |
474 | * memoization this isn't normally possible. We solve it by copying | |
475 | * the code before evaluating. One solution would be to have eval.c | |
476 | * generate yet another evaluator. They are not very big actually. | |
f0e9217a | 477 | */ |
1bbd0b84 GB |
478 | GUILE_PROC (scm_local_eval, "local-eval", 1, 1, 0, |
479 | (SCM exp, SCM env), | |
4079f87e GB |
480 | "Evaluate @var{exp} in its environment. If @var{env} is supplied, |
481 | it is the environment in which to evaluate @var{exp}. Otherwise, | |
482 | @var{exp} must be a memoized code object (in which case, its environment | |
483 | is implicit).") | |
1bbd0b84 | 484 | #define FUNC_NAME s_scm_local_eval |
f0e9217a | 485 | { |
6c179711 MD |
486 | if (SCM_UNBNDP (env)) |
487 | { | |
1bbd0b84 | 488 | SCM_VALIDATE_MEMOIZED(1,exp); |
6c179711 MD |
489 | return scm_eval_3 (SCM_MEMOIZED_EXP (exp), 0, SCM_MEMOIZED_ENV (exp)); |
490 | } | |
f0e9217a MD |
491 | return scm_eval_3 (exp, 1, env); |
492 | } | |
1bbd0b84 | 493 | #undef FUNC_NAME |
f0e9217a | 494 | |
c75512d6 | 495 | #if 0 |
1bbd0b84 | 496 | SCM_REGISTER_PROC (s_reverse_lookup, "reverse-lookup", 2, 0, 0, scm_reverse_lookup); |
c75512d6 MD |
497 | #endif |
498 | ||
499 | SCM | |
500 | scm_reverse_lookup (SCM env, SCM data) | |
501 | { | |
502 | SCM names, values; | |
0c95b57d | 503 | while (SCM_CONSP (SCM_CAR (env))) |
c75512d6 MD |
504 | { |
505 | names = SCM_CAAR (env); | |
506 | values = SCM_CDAR (env); | |
0c95b57d | 507 | while (SCM_CONSP (names)) |
c75512d6 MD |
508 | { |
509 | if (SCM_CAR (values) == data) | |
510 | return SCM_CAR (names); | |
511 | names = SCM_CDR (names); | |
512 | values = SCM_CDR (values); | |
513 | } | |
514 | if (names != SCM_EOL && values == data) | |
515 | return names; | |
516 | env = SCM_CDR (env); | |
517 | } | |
518 | return SCM_BOOL_F; | |
519 | } | |
520 | ||
bfe3154c | 521 | SCM |
6e8d25a6 | 522 | scm_start_stack (SCM id, SCM exp, SCM env) |
bfe3154c MD |
523 | { |
524 | SCM answer; | |
c6b8a41a | 525 | scm_debug_frame vframe; |
c0ab1b8d | 526 | scm_debug_info vframe_vect_body; |
9fa2c7b1 MD |
527 | vframe.prev = scm_last_debug_frame; |
528 | vframe.status = SCM_VOIDFRAME; | |
529 | vframe.vect = &vframe_vect_body; | |
530 | vframe.vect[0].id = id; | |
531 | scm_last_debug_frame = &vframe; | |
cb412265 | 532 | answer = scm_eval_3 (exp, 1, env); |
9fa2c7b1 MD |
533 | scm_last_debug_frame = vframe.prev; |
534 | return answer; | |
535 | } | |
536 | ||
b8229a3b MS |
537 | SCM_SYNTAX(s_start_stack, "start-stack", scm_makacro, scm_m_start_stack); |
538 | ||
8a04c1a2 | 539 | static SCM |
6e8d25a6 | 540 | scm_m_start_stack (SCM exp, SCM env) |
9fa2c7b1 | 541 | { |
bfe3154c | 542 | exp = SCM_CDR (exp); |
c6b8a41a | 543 | SCM_ASSERT (SCM_NIMP (exp) |
e38ecb05 | 544 | && SCM_ECONSP (exp) |
c6b8a41a | 545 | && SCM_NIMP (SCM_CDR (exp)) |
e38ecb05 | 546 | && SCM_ECONSP (SCM_CDR (exp)) |
c6b8a41a | 547 | && SCM_NULLP (SCM_CDDR (exp)), |
bfe3154c MD |
548 | exp, |
549 | SCM_WNA, | |
550 | s_start_stack); | |
9fa2c7b1 | 551 | return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env); |
bfe3154c | 552 | } |
f0e9217a MD |
553 | |
554 | /* {Debug Objects} | |
555 | * | |
556 | * The debugging evaluator throws these on frame traps. | |
557 | */ | |
558 | ||
559 | long scm_tc16_debugobj; | |
560 | ||
f0e9217a | 561 | static int |
1bbd0b84 | 562 | prindebugobj (SCM obj,SCM port,scm_print_state *pstate) |
f0e9217a | 563 | { |
b7f3516f | 564 | scm_puts ("#<debug-object ", port); |
bfe3154c | 565 | scm_intprint (SCM_DEBUGOBJ_FRAME (obj), 16, port); |
b7f3516f | 566 | scm_putc ('>', port); |
f0e9217a MD |
567 | return 1; |
568 | } | |
569 | ||
1bbd0b84 GB |
570 | GUILE_PROC (scm_debug_object_p, "debug-object?", 1, 0, 0, |
571 | (SCM obj), | |
572 | "") | |
573 | #define FUNC_NAME s_scm_debug_object_p | |
f0e9217a | 574 | { |
0c95b57d | 575 | return SCM_BOOL(SCM_DEBUGOBJP (obj)); |
f0e9217a | 576 | } |
1bbd0b84 | 577 | #undef FUNC_NAME |
f0e9217a | 578 | |
1cc91f1b | 579 | |
f0e9217a | 580 | SCM |
1bbd0b84 | 581 | scm_make_debugobj (scm_debug_frame *frame) |
f0e9217a MD |
582 | { |
583 | register SCM z; | |
f0e9217a | 584 | SCM_NEWCELL (z); |
f83e2737 | 585 | SCM_ENTER_A_SECTION; |
a6c64c3c | 586 | SCM_SET_DEBUGOBJ_FRAME (z, (SCM) frame); |
f83e2737 MD |
587 | SCM_SETCAR (z, scm_tc16_debugobj); |
588 | SCM_EXIT_A_SECTION; | |
f0e9217a MD |
589 | return z; |
590 | } | |
591 | ||
f0e9217a MD |
592 | \f |
593 | ||
fe57f652 MD |
594 | /* Undocumented debugging procedure */ |
595 | #ifdef GUILE_DEBUG | |
1bbd0b84 GB |
596 | GUILE_PROC (scm_debug_hang, "debug-hang", 0, 1, 0, |
597 | (SCM obj), | |
598 | "") | |
599 | #define FUNC_NAME s_scm_debug_hang | |
e38ecb05 MD |
600 | { |
601 | int go = 0; | |
602 | while (!go) ; | |
603 | return SCM_UNSPECIFIED; | |
604 | } | |
1bbd0b84 | 605 | #undef FUNC_NAME |
fe57f652 | 606 | #endif |
e38ecb05 MD |
607 | |
608 | \f | |
609 | ||
f0e9217a MD |
610 | void |
611 | scm_init_debug () | |
612 | { | |
5e8d7fd4 | 613 | scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS); |
ee340120 | 614 | |
23a62151 MD |
615 | scm_tc16_memoized = scm_make_smob_type_mfpe ("memoized", 0, |
616 | scm_markcdr, NULL, prinmemoized, NULL); | |
617 | ||
618 | scm_tc16_debugobj = scm_make_smob_type_mfpe ("debug-object", 0, | |
619 | NULL, NULL, prindebugobj, NULL); | |
f0e9217a | 620 | |
63c51b9a MD |
621 | scm_sym_procname = SCM_CAR (scm_sysintern ("procname", SCM_UNDEFINED)); |
622 | scm_sym_dots = SCM_CAR (scm_sysintern ("...", SCM_UNDEFINED)); | |
623 | scm_sym_source = SCM_CAR (scm_sysintern ("source", SCM_UNDEFINED)); | |
f0e9217a | 624 | |
33b97402 MD |
625 | #ifdef GUILE_DEBUG |
626 | scm_sysintern ("SCM_IM_AND", SCM_IM_AND); | |
627 | scm_sysintern ("SCM_IM_BEGIN", SCM_IM_BEGIN); | |
628 | scm_sysintern ("SCM_IM_CASE", SCM_IM_CASE); | |
629 | scm_sysintern ("SCM_IM_COND", SCM_IM_COND); | |
630 | scm_sysintern ("SCM_IM_DO", SCM_IM_DO); | |
631 | scm_sysintern ("SCM_IM_IF", SCM_IM_IF); | |
632 | scm_sysintern ("SCM_IM_LAMBDA", SCM_IM_LAMBDA); | |
633 | scm_sysintern ("SCM_IM_LET", SCM_IM_LET); | |
634 | scm_sysintern ("SCM_IM_LETSTAR", SCM_IM_LETSTAR); | |
635 | scm_sysintern ("SCM_IM_LETREC", SCM_IM_LETREC); | |
636 | scm_sysintern ("SCM_IM_OR", SCM_IM_OR); | |
637 | scm_sysintern ("SCM_IM_QUOTE", SCM_IM_QUOTE); | |
bbab09f6 | 638 | scm_sysintern ("SCM_IM_SET_X", SCM_IM_SET_X); |
33b97402 MD |
639 | scm_sysintern ("SCM_IM_DEFINE", SCM_IM_DEFINE); |
640 | scm_sysintern ("SCM_IM_APPLY", SCM_IM_APPLY); | |
641 | scm_sysintern ("SCM_IM_CONT", SCM_IM_CONT); | |
bbab09f6 | 642 | scm_sysintern ("SCM_IM_DISPATCH", SCM_IM_DISPATCH); |
33b97402 | 643 | #endif |
f0e9217a MD |
644 | scm_add_feature ("debug-extensions"); |
645 | ||
646 | #include "debug.x" | |
647 | } |