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68baa7e7 | 1 | /* Debugging extensions for Guile |
b3d7f6df | 2 | * Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003 Free Software Foundation |
ee340120 | 3 | * |
73be1d9e MV |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
ee340120 | 8 | * |
73be1d9e | 9 | * This library is distributed in the hope that it will be useful, |
ee340120 | 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
ee340120 | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
f0e9217a | 18 | |
1bbd0b84 GB |
19 | |
20 | ||
a0599745 MD |
21 | #include "libguile/_scm.h" |
22 | #include "libguile/eval.h" | |
37c56aec | 23 | #include "libguile/list.h" |
a0599745 MD |
24 | #include "libguile/stackchk.h" |
25 | #include "libguile/throw.h" | |
26 | #include "libguile/macros.h" | |
27 | #include "libguile/smob.h" | |
28 | #include "libguile/procprop.h" | |
29 | #include "libguile/srcprop.h" | |
30 | #include "libguile/alist.h" | |
31 | #include "libguile/continuations.h" | |
32 | #include "libguile/strports.h" | |
33 | #include "libguile/read.h" | |
34 | #include "libguile/feature.h" | |
35 | #include "libguile/dynwind.h" | |
36 | #include "libguile/modules.h" | |
37 | #include "libguile/ports.h" | |
38 | #include "libguile/root.h" | |
b06a8b87 | 39 | #include "libguile/fluids.h" |
b3d7f6df | 40 | #include "libguile/objects.h" |
a0599745 MD |
41 | |
42 | #include "libguile/validate.h" | |
43 | #include "libguile/debug.h" | |
f0e9217a MD |
44 | \f |
45 | ||
46 | /* {Run time control of the debugging evaluator} | |
47 | */ | |
48 | ||
a1ec6916 | 49 | SCM_DEFINE (scm_debug_options, "debug-options-interface", 0, 1, 0, |
1bbd0b84 | 50 | (SCM setting), |
ba94f79e MG |
51 | "Option interface for the debug options. Instead of using\n" |
52 | "this procedure directly, use the procedures @code{debug-enable},\n" | |
3939e9df | 53 | "@code{debug-disable}, @code{debug-set!} and @code{debug-options}.") |
1bbd0b84 | 54 | #define FUNC_NAME s_scm_debug_options |
f0e9217a MD |
55 | { |
56 | SCM ans; | |
57 | SCM_DEFER_INTS; | |
8505e285 | 58 | ans = scm_options (setting, scm_debug_opts, SCM_N_DEBUG_OPTIONS, FUNC_NAME); |
5e8d7fd4 | 59 | if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE)) |
f0e9217a | 60 | { |
1bbd0b84 | 61 | scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, FUNC_NAME); |
1e76143f | 62 | SCM_OUT_OF_RANGE (1, setting); |
f0e9217a | 63 | } |
5e8d7fd4 | 64 | SCM_RESET_DEBUG_MODE; |
a6e350dd | 65 | scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P; |
5e8d7fd4 | 66 | scm_debug_eframe_size = 2 * SCM_N_FRAMES; |
bfc69694 | 67 | SCM_ALLOW_INTS; |
f0e9217a MD |
68 | return ans; |
69 | } | |
1bbd0b84 | 70 | #undef FUNC_NAME |
260b1416 MD |
71 | |
72 | static void | |
73 | with_traps_before (void *data) | |
74 | { | |
75 | int *trap_flag = data; | |
76 | *trap_flag = SCM_TRAPS_P; | |
77 | SCM_TRAPS_P = 1; | |
78 | } | |
79 | ||
80 | static void | |
81 | with_traps_after (void *data) | |
82 | { | |
83 | int *trap_flag = data; | |
84 | SCM_TRAPS_P = *trap_flag; | |
85 | } | |
86 | ||
87 | static SCM | |
88 | with_traps_inner (void *data) | |
89 | { | |
702551e6 | 90 | SCM thunk = SCM_PACK ((scm_t_bits) data); |
fdc28395 | 91 | return scm_call_0 (thunk); |
260b1416 | 92 | } |
1cc91f1b | 93 | |
a1ec6916 | 94 | SCM_DEFINE (scm_with_traps, "with-traps", 1, 0, 0, |
1bbd0b84 | 95 | (SCM thunk), |
ba94f79e | 96 | "Call @var{thunk} with traps enabled.") |
1bbd0b84 | 97 | #define FUNC_NAME s_scm_with_traps |
f0e9217a | 98 | { |
260b1416 | 99 | int trap_flag; |
34d19ef6 | 100 | SCM_VALIDATE_THUNK (1, thunk); |
260b1416 MD |
101 | return scm_internal_dynamic_wind (with_traps_before, |
102 | with_traps_inner, | |
103 | with_traps_after, | |
451e591c | 104 | (void *) SCM_UNPACK (thunk), |
260b1416 | 105 | &trap_flag); |
f0e9217a | 106 | } |
1bbd0b84 | 107 | #undef FUNC_NAME |
f0e9217a MD |
108 | |
109 | \f | |
85db4a2c DH |
110 | |
111 | SCM_SYMBOL (scm_sym_procname, "procname"); | |
112 | SCM_SYMBOL (scm_sym_dots, "..."); | |
113 | SCM_SYMBOL (scm_sym_source, "source"); | |
f0e9217a MD |
114 | |
115 | /* {Memoized Source} | |
116 | */ | |
117 | ||
92c2555f | 118 | scm_t_bits scm_tc16_memoized; |
1cc91f1b | 119 | |
f0e9217a | 120 | static int |
e841c3e0 | 121 | memoized_print (SCM obj, SCM port, scm_print_state *pstate) |
f0e9217a | 122 | { |
9882ea19 | 123 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 124 | scm_puts ("#<memoized ", port); |
9882ea19 | 125 | SCM_SET_WRITINGP (pstate, 1); |
33b97402 | 126 | scm_iprin1 (SCM_MEMOIZED_EXP (obj), port, pstate); |
9882ea19 | 127 | SCM_SET_WRITINGP (pstate, writingp); |
b7f3516f | 128 | scm_putc ('>', port); |
f0e9217a MD |
129 | return 1; |
130 | } | |
131 | ||
a1ec6916 | 132 | SCM_DEFINE (scm_memoized_p, "memoized?", 1, 0, 0, |
1bbd0b84 | 133 | (SCM obj), |
ba94f79e | 134 | "Return @code{#t} if @var{obj} is memoized.") |
1bbd0b84 | 135 | #define FUNC_NAME s_scm_memoized_p |
f0e9217a | 136 | { |
7888309b | 137 | return scm_from_bool(SCM_MEMOIZEDP (obj)); |
f0e9217a | 138 | } |
1bbd0b84 | 139 | #undef FUNC_NAME |
f0e9217a | 140 | |
f0e9217a | 141 | SCM |
1bbd0b84 | 142 | scm_make_memoized (SCM exp, SCM env) |
f0e9217a | 143 | { |
6c179711 | 144 | /* *fixme* Check that env is a valid environment. */ |
f0e9217a | 145 | register SCM z, ans; |
f83e2737 | 146 | SCM_ENTER_A_SECTION; |
cffcab30 DH |
147 | SCM_NEWSMOB (z, SCM_UNPACK (exp), SCM_UNPACK (env)); |
148 | SCM_NEWSMOB (ans, scm_tc16_memoized, SCM_UNPACK (z)); | |
f83e2737 | 149 | SCM_EXIT_A_SECTION; |
f0e9217a MD |
150 | return ans; |
151 | } | |
152 | ||
33b97402 MD |
153 | #ifdef GUILE_DEBUG |
154 | /* | |
155 | * Some primitives for construction of memoized code | |
156 | * | |
157 | * - procedure: memcons CAR CDR [ENV] | |
158 | * | |
159 | * Construct a pair, encapsulated in a memoized object. | |
160 | * | |
161 | * The CAR and CDR can be either normal or memoized. If ENV isn't | |
162 | * specified, the top-level environment of the current module will | |
163 | * be assumed. All environments must match. | |
164 | * | |
33b97402 MD |
165 | * - procedure: make-iloc FRAME BINDING CDRP |
166 | * | |
167 | * Return an iloc referring to frame no. FRAME, binding | |
168 | * no. BINDING. If CDRP is non-#f, the iloc is referring to a | |
169 | * frame consisting of a single pair, with the value stored in the | |
170 | * CDR. | |
171 | * | |
172 | * - procedure: iloc? OBJECT | |
173 | * | |
174 | * Return #t if OBJECT is an iloc. | |
175 | * | |
176 | * - procedure: mem->proc MEMOIZED | |
177 | * | |
178 | * Construct a closure from the memoized lambda expression MEMOIZED | |
179 | * | |
180 | * WARNING! The code is not copied! | |
181 | * | |
182 | * - procedure: proc->mem CLOSURE | |
183 | * | |
184 | * Turn the closure CLOSURE into a memoized object. | |
185 | * | |
186 | * WARNING! The code is not copied! | |
187 | * | |
188 | * - constant: SCM_IM_AND | |
189 | * - constant: SCM_IM_BEGIN | |
190 | * - constant: SCM_IM_CASE | |
191 | * - constant: SCM_IM_COND | |
192 | * - constant: SCM_IM_DO | |
193 | * - constant: SCM_IM_IF | |
194 | * - constant: SCM_IM_LAMBDA | |
195 | * - constant: SCM_IM_LET | |
196 | * - constant: SCM_IM_LETSTAR | |
197 | * - constant: SCM_IM_LETREC | |
198 | * - constant: SCM_IM_OR | |
199 | * - constant: SCM_IM_QUOTE | |
200 | * - constant: SCM_IM_SET | |
201 | * - constant: SCM_IM_DEFINE | |
202 | * - constant: SCM_IM_APPLY | |
203 | * - constant: SCM_IM_CONT | |
bbab09f6 | 204 | * - constant: SCM_IM_DISPATCH |
33b97402 MD |
205 | */ |
206 | ||
a0599745 MD |
207 | #include "libguile/variable.h" |
208 | #include "libguile/procs.h" | |
33b97402 | 209 | |
a1ec6916 | 210 | SCM_DEFINE (scm_memcons, "memcons", 2, 1, 0, |
1bbd0b84 | 211 | (SCM car, SCM cdr, SCM env), |
ba94f79e MG |
212 | "Return a new memoized cons cell with @var{car} and @var{cdr}\n" |
213 | "as members and @var{env} as the environment.") | |
1bbd0b84 | 214 | #define FUNC_NAME s_scm_memcons |
33b97402 | 215 | { |
0c95b57d | 216 | if (SCM_MEMOIZEDP (car)) |
33b97402 MD |
217 | { |
218 | /*fixme* environments may be two different but equal top-level envs */ | |
219 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (car) != env) | |
e8e9b690 | 220 | SCM_MISC_ERROR ("environment mismatch arg1 <-> arg3", |
37c56aec | 221 | scm_list_2 (car, env)); |
33b97402 MD |
222 | else |
223 | env = SCM_MEMOIZED_ENV (car); | |
224 | car = SCM_MEMOIZED_EXP (car); | |
225 | } | |
0c95b57d | 226 | if (SCM_MEMOIZEDP (cdr)) |
33b97402 MD |
227 | { |
228 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (cdr) != env) | |
e8e9b690 | 229 | SCM_MISC_ERROR ("environment mismatch arg2 <-> arg3", |
37c56aec | 230 | scm_list_2 (cdr, env)); |
33b97402 MD |
231 | else |
232 | env = SCM_MEMOIZED_ENV (cdr); | |
233 | cdr = SCM_MEMOIZED_EXP (cdr); | |
234 | } | |
235 | if (SCM_UNBNDP (env)) | |
7e73eaee | 236 | env = scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE); |
33b97402 | 237 | else |
34d19ef6 | 238 | SCM_VALIDATE_NULLORCONS (3, env); |
33b97402 MD |
239 | return scm_make_memoized (scm_cons (car, cdr), env); |
240 | } | |
1bbd0b84 | 241 | #undef FUNC_NAME |
33b97402 | 242 | |
a1ec6916 | 243 | SCM_DEFINE (scm_mem_to_proc, "mem->proc", 1, 0, 0, |
1bbd0b84 | 244 | (SCM obj), |
9fcf3cbb | 245 | "Convert a memoized object (which must represent a body)\n" |
ba94f79e | 246 | "to a procedure.") |
1bbd0b84 | 247 | #define FUNC_NAME s_scm_mem_to_proc |
33b97402 MD |
248 | { |
249 | SCM env; | |
34d19ef6 | 250 | SCM_VALIDATE_MEMOIZED (1, obj); |
33b97402 MD |
251 | env = SCM_MEMOIZED_ENV (obj); |
252 | obj = SCM_MEMOIZED_EXP (obj); | |
9fcf3cbb | 253 | return scm_closure (obj, env); |
33b97402 | 254 | } |
1bbd0b84 | 255 | #undef FUNC_NAME |
33b97402 | 256 | |
a1ec6916 | 257 | SCM_DEFINE (scm_proc_to_mem, "proc->mem", 1, 0, 0, |
1bbd0b84 | 258 | (SCM obj), |
ba94f79e | 259 | "Convert a procedure to a memoized object.") |
1bbd0b84 | 260 | #define FUNC_NAME s_scm_proc_to_mem |
33b97402 | 261 | { |
5623a9b4 | 262 | SCM_VALIDATE_CLOSURE (1, obj); |
9fcf3cbb | 263 | return scm_make_memoized (SCM_CODE (obj), SCM_ENV (obj)); |
33b97402 | 264 | } |
1bbd0b84 | 265 | #undef FUNC_NAME |
33b97402 MD |
266 | |
267 | #endif /* GUILE_DEBUG */ | |
268 | ||
9fcf3cbb | 269 | SCM_DEFINE (scm_i_unmemoize_expr, "unmemoize-expr", 1, 0, 0, |
1bbd0b84 | 270 | (SCM m), |
ba94f79e | 271 | "Unmemoize the memoized expression @var{m},") |
9fcf3cbb | 272 | #define FUNC_NAME s_scm_i_unmemoize_expr |
f0e9217a | 273 | { |
34d19ef6 | 274 | SCM_VALIDATE_MEMOIZED (1, m); |
9fcf3cbb | 275 | return scm_i_unmemocopy_expr (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m)); |
f0e9217a | 276 | } |
1bbd0b84 | 277 | #undef FUNC_NAME |
f0e9217a | 278 | |
a1ec6916 | 279 | SCM_DEFINE (scm_memoized_environment, "memoized-environment", 1, 0, 0, |
1bbd0b84 | 280 | (SCM m), |
ba94f79e | 281 | "Return the environment of the memoized expression @var{m}.") |
1bbd0b84 | 282 | #define FUNC_NAME s_scm_memoized_environment |
f0e9217a | 283 | { |
34d19ef6 | 284 | SCM_VALIDATE_MEMOIZED (1, m); |
bfe3154c | 285 | return SCM_MEMOIZED_ENV (m); |
f0e9217a | 286 | } |
1bbd0b84 | 287 | #undef FUNC_NAME |
f0e9217a | 288 | |
a1ec6916 | 289 | SCM_DEFINE (scm_procedure_name, "procedure-name", 1, 0, 0, |
1bbd0b84 | 290 | (SCM proc), |
ba94f79e | 291 | "Return the name of the procedure @var{proc}") |
1bbd0b84 | 292 | #define FUNC_NAME s_scm_procedure_name |
f0e9217a | 293 | { |
34d19ef6 | 294 | SCM_VALIDATE_PROC (1, proc); |
f0e9217a | 295 | switch (SCM_TYP7 (proc)) { |
a726dd9d MD |
296 | case scm_tcs_subrs: |
297 | return SCM_SNAME (proc); | |
298 | default: | |
f0e9217a | 299 | { |
63c51b9a | 300 | SCM name = scm_procedure_property (proc, scm_sym_name); |
f0e9217a | 301 | #if 0 |
63c51b9a | 302 | /* Source property scm_sym_procname not implemented yet... */ |
f9450cdb | 303 | SCM name = scm_source_property (SCM_CAR (SCM_CLOSURE_BODY (proc)), scm_sym_procname); |
7888309b | 304 | if (scm_is_false (name)) |
63c51b9a | 305 | name = scm_procedure_property (proc, scm_sym_name); |
f0e9217a | 306 | #endif |
7888309b | 307 | if (scm_is_false (name) && SCM_CLOSUREP (proc)) |
c75512d6 | 308 | name = scm_reverse_lookup (SCM_ENV (proc), proc); |
f0e9217a MD |
309 | return name; |
310 | } | |
f0e9217a MD |
311 | } |
312 | } | |
1bbd0b84 | 313 | #undef FUNC_NAME |
f0e9217a | 314 | |
a1ec6916 | 315 | SCM_DEFINE (scm_procedure_source, "procedure-source", 1, 0, 0, |
1bbd0b84 | 316 | (SCM proc), |
ba94f79e | 317 | "Return the source of the procedure @var{proc}.") |
1bbd0b84 | 318 | #define FUNC_NAME s_scm_procedure_source |
f0e9217a | 319 | { |
34d19ef6 | 320 | SCM_VALIDATE_NIM (1, proc); |
b3d7f6df | 321 | again: |
f0e9217a MD |
322 | switch (SCM_TYP7 (proc)) { |
323 | case scm_tcs_closures: | |
324 | { | |
212e58ed DH |
325 | const SCM formals = SCM_CLOSURE_FORMALS (proc); |
326 | const SCM body = SCM_CLOSURE_BODY (proc); | |
327 | const SCM src = scm_source_property (body, scm_sym_copy); | |
328 | ||
7888309b | 329 | if (scm_is_true (src)) |
212e58ed DH |
330 | { |
331 | return scm_cons2 (scm_sym_lambda, formals, src); | |
332 | } | |
333 | else | |
334 | { | |
335 | const SCM env = SCM_EXTEND_ENV (formals, SCM_EOL, SCM_ENV (proc)); | |
336 | return scm_cons2 (scm_sym_lambda, | |
337 | scm_i_finite_list_copy (formals), | |
9fcf3cbb | 338 | scm_i_unmemocopy_body (body, env)); |
212e58ed | 339 | } |
f0e9217a | 340 | } |
b3d7f6df MD |
341 | case scm_tcs_struct: |
342 | if (!SCM_I_OPERATORP (proc)) | |
343 | break; | |
344 | goto procprop; | |
345 | case scm_tc7_smob: | |
346 | if (!SCM_SMOB_DESCRIPTOR (proc).apply) | |
347 | break; | |
f0e9217a MD |
348 | case scm_tcs_subrs: |
349 | #ifdef CCLO | |
350 | case scm_tc7_cclo: | |
351 | #endif | |
b3d7f6df | 352 | procprop: |
f0e9217a MD |
353 | /* It would indeed be a nice thing if we supplied source even for |
354 | built in procedures! */ | |
63c51b9a | 355 | return scm_procedure_property (proc, scm_sym_source); |
b3d7f6df MD |
356 | case scm_tc7_pws: |
357 | { | |
358 | SCM src = scm_procedure_property (proc, scm_sym_source); | |
7888309b | 359 | if (scm_is_true (src)) |
b3d7f6df MD |
360 | return src; |
361 | proc = SCM_PROCEDURE (proc); | |
362 | goto again; | |
363 | } | |
f0e9217a | 364 | default: |
b3d7f6df | 365 | ; |
f0e9217a | 366 | } |
b3d7f6df MD |
367 | SCM_WRONG_TYPE_ARG (1, proc); |
368 | return SCM_BOOL_F; /* not reached */ | |
f0e9217a | 369 | } |
1bbd0b84 | 370 | #undef FUNC_NAME |
f0e9217a | 371 | |
a1ec6916 | 372 | SCM_DEFINE (scm_procedure_environment, "procedure-environment", 1, 0, 0, |
1bbd0b84 | 373 | (SCM proc), |
ba94f79e | 374 | "Return the environment of the procedure @var{proc}.") |
1bbd0b84 | 375 | #define FUNC_NAME s_scm_procedure_environment |
f0e9217a | 376 | { |
34d19ef6 | 377 | SCM_VALIDATE_NIM (1, proc); |
f0e9217a MD |
378 | switch (SCM_TYP7 (proc)) { |
379 | case scm_tcs_closures: | |
380 | return SCM_ENV (proc); | |
f0e9217a MD |
381 | case scm_tcs_subrs: |
382 | #ifdef CCLO | |
383 | case scm_tc7_cclo: | |
384 | #endif | |
385 | return SCM_EOL; | |
386 | default: | |
276dd677 DH |
387 | SCM_WRONG_TYPE_ARG (1, proc); |
388 | /* not reached */ | |
f0e9217a MD |
389 | } |
390 | } | |
1bbd0b84 | 391 | #undef FUNC_NAME |
f0e9217a | 392 | |
bfe3154c | 393 | \f |
f0e9217a MD |
394 | |
395 | /* Eval in a local environment. We would like to have the ability to | |
e38ecb05 MD |
396 | * evaluate in a specified local environment, but due to the |
397 | * memoization this isn't normally possible. We solve it by copying | |
398 | * the code before evaluating. One solution would be to have eval.c | |
399 | * generate yet another evaluator. They are not very big actually. | |
f0e9217a | 400 | */ |
a1ec6916 | 401 | SCM_DEFINE (scm_local_eval, "local-eval", 1, 1, 0, |
1bbd0b84 | 402 | (SCM exp, SCM env), |
b380b885 MD |
403 | "Evaluate @var{exp} in its environment. If @var{env} is supplied,\n" |
404 | "it is the environment in which to evaluate @var{exp}. Otherwise,\n" | |
405 | "@var{exp} must be a memoized code object (in which case, its environment\n" | |
406 | "is implicit).") | |
1bbd0b84 | 407 | #define FUNC_NAME s_scm_local_eval |
f0e9217a | 408 | { |
6c179711 MD |
409 | if (SCM_UNBNDP (env)) |
410 | { | |
82b3290d MD |
411 | SCM_VALIDATE_MEMOIZED (1, exp); |
412 | return scm_i_eval_x (SCM_MEMOIZED_EXP (exp), SCM_MEMOIZED_ENV (exp)); | |
6c179711 | 413 | } |
82b3290d | 414 | return scm_i_eval (exp, env); |
f0e9217a | 415 | } |
1bbd0b84 | 416 | #undef FUNC_NAME |
f0e9217a | 417 | |
c75512d6 | 418 | #if 0 |
1bbd0b84 | 419 | SCM_REGISTER_PROC (s_reverse_lookup, "reverse-lookup", 2, 0, 0, scm_reverse_lookup); |
c75512d6 MD |
420 | #endif |
421 | ||
422 | SCM | |
423 | scm_reverse_lookup (SCM env, SCM data) | |
424 | { | |
22a52da1 | 425 | while (SCM_CONSP (env) && SCM_CONSP (SCM_CAR (env))) |
c75512d6 | 426 | { |
22a52da1 DH |
427 | SCM names = SCM_CAAR (env); |
428 | SCM values = SCM_CDAR (env); | |
0c95b57d | 429 | while (SCM_CONSP (names)) |
c75512d6 | 430 | { |
bc36d050 | 431 | if (scm_is_eq (SCM_CAR (values), data)) |
c75512d6 MD |
432 | return SCM_CAR (names); |
433 | names = SCM_CDR (names); | |
434 | values = SCM_CDR (values); | |
435 | } | |
bc36d050 | 436 | if (!SCM_NULLP (names) && scm_is_eq (values, data)) |
c75512d6 MD |
437 | return names; |
438 | env = SCM_CDR (env); | |
439 | } | |
440 | return SCM_BOOL_F; | |
441 | } | |
442 | ||
bfe3154c | 443 | SCM |
6e8d25a6 | 444 | scm_start_stack (SCM id, SCM exp, SCM env) |
bfe3154c MD |
445 | { |
446 | SCM answer; | |
92c2555f MV |
447 | scm_t_debug_frame vframe; |
448 | scm_t_debug_info vframe_vect_body; | |
9fa2c7b1 MD |
449 | vframe.prev = scm_last_debug_frame; |
450 | vframe.status = SCM_VOIDFRAME; | |
451 | vframe.vect = &vframe_vect_body; | |
452 | vframe.vect[0].id = id; | |
453 | scm_last_debug_frame = &vframe; | |
82b3290d | 454 | answer = scm_i_eval (exp, env); |
9fa2c7b1 MD |
455 | scm_last_debug_frame = vframe.prev; |
456 | return answer; | |
457 | } | |
458 | ||
b8229a3b MS |
459 | SCM_SYNTAX(s_start_stack, "start-stack", scm_makacro, scm_m_start_stack); |
460 | ||
8a04c1a2 | 461 | static SCM |
6e8d25a6 | 462 | scm_m_start_stack (SCM exp, SCM env) |
68baa7e7 | 463 | #define FUNC_NAME s_start_stack |
9fa2c7b1 | 464 | { |
bfe3154c | 465 | exp = SCM_CDR (exp); |
904a077d MV |
466 | if (!SCM_CONSP (exp) |
467 | || !SCM_CONSP (SCM_CDR (exp)) | |
68baa7e7 DH |
468 | || !SCM_NULLP (SCM_CDDR (exp))) |
469 | SCM_WRONG_NUM_ARGS (); | |
9fa2c7b1 | 470 | return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env); |
bfe3154c | 471 | } |
68baa7e7 DH |
472 | #undef FUNC_NAME |
473 | ||
f0e9217a MD |
474 | |
475 | /* {Debug Objects} | |
476 | * | |
477 | * The debugging evaluator throws these on frame traps. | |
478 | */ | |
479 | ||
92c2555f | 480 | scm_t_bits scm_tc16_debugobj; |
f0e9217a | 481 | |
f0e9217a | 482 | static int |
e81d98ec | 483 | debugobj_print (SCM obj, SCM port, scm_print_state *pstate SCM_UNUSED) |
f0e9217a | 484 | { |
b7f3516f | 485 | scm_puts ("#<debug-object ", port); |
37c56aec | 486 | scm_intprint ((long) SCM_DEBUGOBJ_FRAME (obj), 16, port); |
b7f3516f | 487 | scm_putc ('>', port); |
f0e9217a MD |
488 | return 1; |
489 | } | |
490 | ||
a1ec6916 | 491 | SCM_DEFINE (scm_debug_object_p, "debug-object?", 1, 0, 0, |
1bbd0b84 | 492 | (SCM obj), |
ba94f79e | 493 | "Return @code{#t} if @var{obj} is a debug object.") |
1bbd0b84 | 494 | #define FUNC_NAME s_scm_debug_object_p |
f0e9217a | 495 | { |
7888309b | 496 | return scm_from_bool(SCM_DEBUGOBJP (obj)); |
f0e9217a | 497 | } |
1bbd0b84 | 498 | #undef FUNC_NAME |
f0e9217a | 499 | |
1cc91f1b | 500 | |
f0e9217a | 501 | SCM |
92c2555f | 502 | scm_make_debugobj (scm_t_debug_frame *frame) |
f0e9217a | 503 | { |
228a24ef | 504 | return scm_cell (scm_tc16_debugobj, (scm_t_bits) frame); |
f0e9217a MD |
505 | } |
506 | ||
f0e9217a MD |
507 | \f |
508 | ||
fe57f652 MD |
509 | /* Undocumented debugging procedure */ |
510 | #ifdef GUILE_DEBUG | |
a1ec6916 | 511 | SCM_DEFINE (scm_debug_hang, "debug-hang", 0, 1, 0, |
1bbd0b84 | 512 | (SCM obj), |
ba94f79e MG |
513 | "Go into an endless loop, which can be only terminated with\n" |
514 | "a debugger.") | |
1bbd0b84 | 515 | #define FUNC_NAME s_scm_debug_hang |
e38ecb05 MD |
516 | { |
517 | int go = 0; | |
518 | while (!go) ; | |
519 | return SCM_UNSPECIFIED; | |
520 | } | |
1bbd0b84 | 521 | #undef FUNC_NAME |
fe57f652 | 522 | #endif |
e38ecb05 MD |
523 | |
524 | \f | |
525 | ||
f0e9217a MD |
526 | void |
527 | scm_init_debug () | |
528 | { | |
5e8d7fd4 | 529 | scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS); |
ee340120 | 530 | |
e841c3e0 KN |
531 | scm_tc16_memoized = scm_make_smob_type ("memoized", 0); |
532 | scm_set_smob_mark (scm_tc16_memoized, scm_markcdr); | |
533 | scm_set_smob_print (scm_tc16_memoized, memoized_print); | |
23a62151 | 534 | |
e841c3e0 KN |
535 | scm_tc16_debugobj = scm_make_smob_type ("debug-object", 0); |
536 | scm_set_smob_print (scm_tc16_debugobj, debugobj_print); | |
f0e9217a | 537 | |
33b97402 | 538 | #ifdef GUILE_DEBUG |
1be6b49c ML |
539 | scm_c_define ("SCM_IM_AND", SCM_IM_AND); |
540 | scm_c_define ("SCM_IM_BEGIN", SCM_IM_BEGIN); | |
541 | scm_c_define ("SCM_IM_CASE", SCM_IM_CASE); | |
542 | scm_c_define ("SCM_IM_COND", SCM_IM_COND); | |
543 | scm_c_define ("SCM_IM_DO", SCM_IM_DO); | |
544 | scm_c_define ("SCM_IM_IF", SCM_IM_IF); | |
545 | scm_c_define ("SCM_IM_LAMBDA", SCM_IM_LAMBDA); | |
546 | scm_c_define ("SCM_IM_LET", SCM_IM_LET); | |
547 | scm_c_define ("SCM_IM_LETSTAR", SCM_IM_LETSTAR); | |
548 | scm_c_define ("SCM_IM_LETREC", SCM_IM_LETREC); | |
549 | scm_c_define ("SCM_IM_OR", SCM_IM_OR); | |
550 | scm_c_define ("SCM_IM_QUOTE", SCM_IM_QUOTE); | |
551 | scm_c_define ("SCM_IM_SET_X", SCM_IM_SET_X); | |
552 | scm_c_define ("SCM_IM_DEFINE", SCM_IM_DEFINE); | |
553 | scm_c_define ("SCM_IM_APPLY", SCM_IM_APPLY); | |
554 | scm_c_define ("SCM_IM_CONT", SCM_IM_CONT); | |
555 | scm_c_define ("SCM_IM_DISPATCH", SCM_IM_DISPATCH); | |
33b97402 | 556 | #endif |
f0e9217a MD |
557 | scm_add_feature ("debug-extensions"); |
558 | ||
a0599745 | 559 | #include "libguile/debug.x" |
f0e9217a | 560 | } |
89e00824 ML |
561 | |
562 | /* | |
563 | Local Variables: | |
564 | c-file-style: "gnu" | |
565 | End: | |
566 | */ |