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68baa7e7 DH |
1 | /* Debugging extensions for Guile |
2 | * Copyright (C) 1995,1996,1997,1998,1999,2000,2001 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 | ||
a0599745 MD |
50 | #include "libguile/_scm.h" |
51 | #include "libguile/eval.h" | |
52 | #include "libguile/stackchk.h" | |
53 | #include "libguile/throw.h" | |
54 | #include "libguile/macros.h" | |
55 | #include "libguile/smob.h" | |
56 | #include "libguile/procprop.h" | |
57 | #include "libguile/srcprop.h" | |
58 | #include "libguile/alist.h" | |
59 | #include "libguile/continuations.h" | |
60 | #include "libguile/strports.h" | |
61 | #include "libguile/read.h" | |
62 | #include "libguile/feature.h" | |
63 | #include "libguile/dynwind.h" | |
64 | #include "libguile/modules.h" | |
65 | #include "libguile/ports.h" | |
66 | #include "libguile/root.h" | |
b06a8b87 | 67 | #include "libguile/fluids.h" |
a0599745 MD |
68 | |
69 | #include "libguile/validate.h" | |
70 | #include "libguile/debug.h" | |
f0e9217a MD |
71 | \f |
72 | ||
73 | /* {Run time control of the debugging evaluator} | |
74 | */ | |
75 | ||
a1ec6916 | 76 | SCM_DEFINE (scm_debug_options, "debug-options-interface", 0, 1, 0, |
1bbd0b84 | 77 | (SCM setting), |
ba94f79e MG |
78 | "Option interface for the debug options. Instead of using\n" |
79 | "this procedure directly, use the procedures @code{debug-enable},\n" | |
80 | "@code{debug-disable}, @code{debug-set!} and @var{debug-options}.") | |
1bbd0b84 | 81 | #define FUNC_NAME s_scm_debug_options |
f0e9217a MD |
82 | { |
83 | SCM ans; | |
84 | SCM_DEFER_INTS; | |
5e8d7fd4 MD |
85 | ans = scm_options (setting, |
86 | scm_debug_opts, | |
87 | SCM_N_DEBUG_OPTIONS, | |
1bbd0b84 | 88 | FUNC_NAME); |
f0e9217a | 89 | #ifndef SCM_RECKLESS |
5e8d7fd4 | 90 | if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE)) |
f0e9217a | 91 | { |
1bbd0b84 | 92 | scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, FUNC_NAME); |
1e76143f | 93 | SCM_OUT_OF_RANGE (1, setting); |
f0e9217a MD |
94 | } |
95 | #endif | |
5e8d7fd4 | 96 | SCM_RESET_DEBUG_MODE; |
a6e350dd | 97 | scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P; |
5e8d7fd4 | 98 | scm_debug_eframe_size = 2 * SCM_N_FRAMES; |
bfc69694 | 99 | SCM_ALLOW_INTS; |
f0e9217a MD |
100 | return ans; |
101 | } | |
1bbd0b84 | 102 | #undef FUNC_NAME |
260b1416 MD |
103 | |
104 | static void | |
105 | with_traps_before (void *data) | |
106 | { | |
107 | int *trap_flag = data; | |
108 | *trap_flag = SCM_TRAPS_P; | |
109 | SCM_TRAPS_P = 1; | |
110 | } | |
111 | ||
112 | static void | |
113 | with_traps_after (void *data) | |
114 | { | |
115 | int *trap_flag = data; | |
116 | SCM_TRAPS_P = *trap_flag; | |
117 | } | |
118 | ||
119 | static SCM | |
120 | with_traps_inner (void *data) | |
121 | { | |
451e591c | 122 | SCM thunk = SCM_PACK (data); |
260b1416 MD |
123 | return scm_apply (thunk, SCM_EOL, SCM_EOL); |
124 | } | |
1cc91f1b | 125 | |
a1ec6916 | 126 | SCM_DEFINE (scm_with_traps, "with-traps", 1, 0, 0, |
1bbd0b84 | 127 | (SCM thunk), |
ba94f79e | 128 | "Call @var{thunk} with traps enabled.") |
1bbd0b84 | 129 | #define FUNC_NAME s_scm_with_traps |
f0e9217a | 130 | { |
260b1416 | 131 | int trap_flag; |
3b3b36dd | 132 | SCM_VALIDATE_THUNK (1,thunk); |
260b1416 MD |
133 | return scm_internal_dynamic_wind (with_traps_before, |
134 | with_traps_inner, | |
135 | with_traps_after, | |
451e591c | 136 | (void *) SCM_UNPACK (thunk), |
260b1416 | 137 | &trap_flag); |
f0e9217a | 138 | } |
1bbd0b84 | 139 | #undef FUNC_NAME |
f0e9217a MD |
140 | |
141 | \f | |
85db4a2c DH |
142 | |
143 | SCM_SYMBOL (scm_sym_procname, "procname"); | |
144 | SCM_SYMBOL (scm_sym_dots, "..."); | |
145 | SCM_SYMBOL (scm_sym_source, "source"); | |
f0e9217a MD |
146 | |
147 | /* {Memoized Source} | |
148 | */ | |
149 | ||
92c2555f | 150 | scm_t_bits scm_tc16_memoized; |
1cc91f1b | 151 | |
f0e9217a | 152 | static int |
e841c3e0 | 153 | memoized_print (SCM obj, SCM port, scm_print_state *pstate) |
f0e9217a | 154 | { |
9882ea19 | 155 | int writingp = SCM_WRITINGP (pstate); |
b7f3516f | 156 | scm_puts ("#<memoized ", port); |
9882ea19 | 157 | SCM_SET_WRITINGP (pstate, 1); |
33b97402 MD |
158 | #ifdef GUILE_DEBUG |
159 | scm_iprin1 (SCM_MEMOIZED_EXP (obj), port, pstate); | |
160 | #else | |
9882ea19 | 161 | scm_iprin1 (scm_unmemoize (obj), port, pstate); |
33b97402 | 162 | #endif |
9882ea19 | 163 | SCM_SET_WRITINGP (pstate, writingp); |
b7f3516f | 164 | scm_putc ('>', port); |
f0e9217a MD |
165 | return 1; |
166 | } | |
167 | ||
a1ec6916 | 168 | SCM_DEFINE (scm_memoized_p, "memoized?", 1, 0, 0, |
1bbd0b84 | 169 | (SCM obj), |
ba94f79e | 170 | "Return @code{#t} if @var{obj} is memoized.") |
1bbd0b84 | 171 | #define FUNC_NAME s_scm_memoized_p |
f0e9217a | 172 | { |
0c95b57d | 173 | return SCM_BOOL(SCM_MEMOIZEDP (obj)); |
f0e9217a | 174 | } |
1bbd0b84 | 175 | #undef FUNC_NAME |
f0e9217a | 176 | |
f0e9217a | 177 | SCM |
1bbd0b84 | 178 | scm_make_memoized (SCM exp, SCM env) |
f0e9217a | 179 | { |
6c179711 | 180 | /* *fixme* Check that env is a valid environment. */ |
f0e9217a | 181 | register SCM z, ans; |
f83e2737 | 182 | SCM_ENTER_A_SECTION; |
cffcab30 DH |
183 | SCM_NEWSMOB (z, SCM_UNPACK (exp), SCM_UNPACK (env)); |
184 | SCM_NEWSMOB (ans, scm_tc16_memoized, SCM_UNPACK (z)); | |
f83e2737 | 185 | SCM_EXIT_A_SECTION; |
f0e9217a MD |
186 | return ans; |
187 | } | |
188 | ||
33b97402 MD |
189 | #ifdef GUILE_DEBUG |
190 | /* | |
191 | * Some primitives for construction of memoized code | |
192 | * | |
193 | * - procedure: memcons CAR CDR [ENV] | |
194 | * | |
195 | * Construct a pair, encapsulated in a memoized object. | |
196 | * | |
197 | * The CAR and CDR can be either normal or memoized. If ENV isn't | |
198 | * specified, the top-level environment of the current module will | |
199 | * be assumed. All environments must match. | |
200 | * | |
201 | * - procedure: make-gloc VARIABLE [ENV] | |
202 | * | |
203 | * Return a gloc, encapsulated in a memoized object. | |
204 | * | |
205 | * (Glocs can't exist in normal list structures, since they will | |
206 | * be mistaken for structs.) | |
207 | * | |
208 | * - procedure: gloc? OBJECT | |
209 | * | |
210 | * Return #t if OBJECT is a memoized gloc. | |
211 | * | |
212 | * - procedure: make-iloc FRAME BINDING CDRP | |
213 | * | |
214 | * Return an iloc referring to frame no. FRAME, binding | |
215 | * no. BINDING. If CDRP is non-#f, the iloc is referring to a | |
216 | * frame consisting of a single pair, with the value stored in the | |
217 | * CDR. | |
218 | * | |
219 | * - procedure: iloc? OBJECT | |
220 | * | |
221 | * Return #t if OBJECT is an iloc. | |
222 | * | |
223 | * - procedure: mem->proc MEMOIZED | |
224 | * | |
225 | * Construct a closure from the memoized lambda expression MEMOIZED | |
226 | * | |
227 | * WARNING! The code is not copied! | |
228 | * | |
229 | * - procedure: proc->mem CLOSURE | |
230 | * | |
231 | * Turn the closure CLOSURE into a memoized object. | |
232 | * | |
233 | * WARNING! The code is not copied! | |
234 | * | |
235 | * - constant: SCM_IM_AND | |
236 | * - constant: SCM_IM_BEGIN | |
237 | * - constant: SCM_IM_CASE | |
238 | * - constant: SCM_IM_COND | |
239 | * - constant: SCM_IM_DO | |
240 | * - constant: SCM_IM_IF | |
241 | * - constant: SCM_IM_LAMBDA | |
242 | * - constant: SCM_IM_LET | |
243 | * - constant: SCM_IM_LETSTAR | |
244 | * - constant: SCM_IM_LETREC | |
245 | * - constant: SCM_IM_OR | |
246 | * - constant: SCM_IM_QUOTE | |
247 | * - constant: SCM_IM_SET | |
248 | * - constant: SCM_IM_DEFINE | |
249 | * - constant: SCM_IM_APPLY | |
250 | * - constant: SCM_IM_CONT | |
bbab09f6 | 251 | * - constant: SCM_IM_DISPATCH |
33b97402 MD |
252 | */ |
253 | ||
a0599745 MD |
254 | #include "libguile/variable.h" |
255 | #include "libguile/procs.h" | |
33b97402 | 256 | |
a1ec6916 | 257 | SCM_DEFINE (scm_make_gloc, "make-gloc", 1, 1, 0, |
1bbd0b84 | 258 | (SCM var, SCM env), |
ba94f79e MG |
259 | "Create a gloc for variable @var{var} in the environment\n" |
260 | "@var{env}.") | |
1bbd0b84 | 261 | #define FUNC_NAME s_scm_make_gloc |
33b97402 | 262 | { |
86d31dfe | 263 | SCM_VALIDATE_VARIABLE (1,var); |
33b97402 | 264 | if (SCM_UNBNDP (env)) |
7e73eaee | 265 | env = scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE); |
33b97402 | 266 | else |
3b3b36dd | 267 | SCM_VALIDATE_NULLORCONS (2,env); |
dd85ce47 | 268 | return scm_make_memoized (SCM_PACK (SCM_UNPACK (var) + scm_tc3_cons_gloc), env); |
33b97402 | 269 | } |
1bbd0b84 | 270 | #undef FUNC_NAME |
33b97402 | 271 | |
a1ec6916 | 272 | SCM_DEFINE (scm_gloc_p, "gloc?", 1, 0, 0, |
1bbd0b84 | 273 | (SCM obj), |
ba94f79e | 274 | "Return @code{#t} if @var{obj} is a gloc.") |
1bbd0b84 | 275 | #define FUNC_NAME s_scm_gloc_p |
33b97402 | 276 | { |
86d31dfe MV |
277 | return |
278 | SCM_BOOL (SCM_MEMOIZEDP (obj) | |
279 | && ((SCM_UNPACK(SCM_MEMOIZED_EXP(obj))&7) == scm_tc3_cons_gloc)); | |
33b97402 | 280 | } |
1bbd0b84 | 281 | #undef FUNC_NAME |
33b97402 | 282 | |
a1ec6916 | 283 | SCM_DEFINE (scm_make_iloc, "make-iloc", 3, 0, 0, |
1bbd0b84 | 284 | (SCM frame, SCM binding, SCM cdrp), |
ba94f79e MG |
285 | "Return a new iloc with frame offset @var{frame}, binding\n" |
286 | "offset @var{binding} and the cdr flag @var{cdrp}.") | |
1bbd0b84 | 287 | #define FUNC_NAME s_scm_make_iloc |
33b97402 | 288 | { |
3b3b36dd GB |
289 | SCM_VALIDATE_INUM (1,frame); |
290 | SCM_VALIDATE_INUM (2,binding); | |
dd85ce47 ML |
291 | return SCM_PACK (SCM_UNPACK (SCM_ILOC00) |
292 | + SCM_IFRINC * SCM_INUM (frame) | |
293 | + (SCM_NFALSEP (cdrp) ? SCM_ICDR : 0) | |
294 | + SCM_IDINC * SCM_INUM (binding)); | |
33b97402 | 295 | } |
1bbd0b84 | 296 | #undef FUNC_NAME |
33b97402 | 297 | |
a1ec6916 | 298 | SCM_DEFINE (scm_iloc_p, "iloc?", 1, 0, 0, |
1bbd0b84 | 299 | (SCM obj), |
ba94f79e | 300 | "Return @code{#t} if @var{obj} is an iloc.") |
0f981281 | 301 | #define FUNC_NAME s_scm_iloc_p |
33b97402 | 302 | { |
1bbd0b84 | 303 | return SCM_BOOL(SCM_ILOCP (obj)); |
33b97402 | 304 | } |
1bbd0b84 | 305 | #undef FUNC_NAME |
33b97402 | 306 | |
a1ec6916 | 307 | SCM_DEFINE (scm_memcons, "memcons", 2, 1, 0, |
1bbd0b84 | 308 | (SCM car, SCM cdr, SCM env), |
ba94f79e MG |
309 | "Return a new memoized cons cell with @var{car} and @var{cdr}\n" |
310 | "as members and @var{env} as the environment.") | |
1bbd0b84 | 311 | #define FUNC_NAME s_scm_memcons |
33b97402 | 312 | { |
0c95b57d | 313 | if (SCM_MEMOIZEDP (car)) |
33b97402 MD |
314 | { |
315 | /*fixme* environments may be two different but equal top-level envs */ | |
316 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (car) != env) | |
e8e9b690 | 317 | SCM_MISC_ERROR ("environment mismatch arg1 <-> arg3", |
33b97402 MD |
318 | scm_cons2 (car, env, SCM_EOL)); |
319 | else | |
320 | env = SCM_MEMOIZED_ENV (car); | |
321 | car = SCM_MEMOIZED_EXP (car); | |
322 | } | |
0c95b57d | 323 | if (SCM_MEMOIZEDP (cdr)) |
33b97402 MD |
324 | { |
325 | if (!SCM_UNBNDP (env) && SCM_MEMOIZED_ENV (cdr) != env) | |
e8e9b690 | 326 | SCM_MISC_ERROR ("environment mismatch arg2 <-> arg3", |
33b97402 MD |
327 | scm_cons2 (cdr, env, SCM_EOL)); |
328 | else | |
329 | env = SCM_MEMOIZED_ENV (cdr); | |
330 | cdr = SCM_MEMOIZED_EXP (cdr); | |
331 | } | |
332 | if (SCM_UNBNDP (env)) | |
7e73eaee | 333 | env = scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE); |
33b97402 | 334 | else |
3b3b36dd | 335 | SCM_VALIDATE_NULLORCONS (3,env); |
33b97402 MD |
336 | return scm_make_memoized (scm_cons (car, cdr), env); |
337 | } | |
1bbd0b84 | 338 | #undef FUNC_NAME |
33b97402 | 339 | |
a1ec6916 | 340 | SCM_DEFINE (scm_mem_to_proc, "mem->proc", 1, 0, 0, |
1bbd0b84 | 341 | (SCM obj), |
ba94f79e MG |
342 | "Convert a memoized object (which must be a lambda expression)\n" |
343 | "to a procedure.") | |
1bbd0b84 | 344 | #define FUNC_NAME s_scm_mem_to_proc |
33b97402 MD |
345 | { |
346 | SCM env; | |
3b3b36dd | 347 | SCM_VALIDATE_MEMOIZED (1,obj); |
33b97402 MD |
348 | env = SCM_MEMOIZED_ENV (obj); |
349 | obj = SCM_MEMOIZED_EXP (obj); | |
350 | if (!(SCM_NIMP (obj) && SCM_CAR (obj) == SCM_IM_LAMBDA)) | |
e8e9b690 | 351 | SCM_MISC_ERROR ("expected lambda expression", |
33b97402 MD |
352 | scm_cons (obj, SCM_EOL)); |
353 | return scm_closure (SCM_CDR (obj), env); | |
354 | } | |
1bbd0b84 | 355 | #undef FUNC_NAME |
33b97402 | 356 | |
a1ec6916 | 357 | SCM_DEFINE (scm_proc_to_mem, "proc->mem", 1, 0, 0, |
1bbd0b84 | 358 | (SCM obj), |
ba94f79e | 359 | "Convert a procedure to a memoized object.") |
1bbd0b84 | 360 | #define FUNC_NAME s_scm_proc_to_mem |
33b97402 | 361 | { |
5623a9b4 | 362 | SCM_VALIDATE_CLOSURE (1, obj); |
33b97402 MD |
363 | return scm_make_memoized (scm_cons (SCM_IM_LAMBDA, SCM_CODE (obj)), |
364 | SCM_ENV (obj)); | |
365 | } | |
1bbd0b84 | 366 | #undef FUNC_NAME |
33b97402 MD |
367 | |
368 | #endif /* GUILE_DEBUG */ | |
369 | ||
a1ec6916 | 370 | SCM_DEFINE (scm_unmemoize, "unmemoize", 1, 0, 0, |
1bbd0b84 | 371 | (SCM m), |
ba94f79e | 372 | "Unmemoize the memoized expression @var{m},") |
1bbd0b84 | 373 | #define FUNC_NAME s_scm_unmemoize |
f0e9217a | 374 | { |
3b3b36dd | 375 | SCM_VALIDATE_MEMOIZED (1,m); |
bfe3154c | 376 | return scm_unmemocopy (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m)); |
f0e9217a | 377 | } |
1bbd0b84 | 378 | #undef FUNC_NAME |
f0e9217a | 379 | |
a1ec6916 | 380 | SCM_DEFINE (scm_memoized_environment, "memoized-environment", 1, 0, 0, |
1bbd0b84 | 381 | (SCM m), |
ba94f79e | 382 | "Return the environment of the memoized expression @var{m}.") |
1bbd0b84 | 383 | #define FUNC_NAME s_scm_memoized_environment |
f0e9217a | 384 | { |
3b3b36dd | 385 | SCM_VALIDATE_MEMOIZED (1,m); |
bfe3154c | 386 | return SCM_MEMOIZED_ENV (m); |
f0e9217a | 387 | } |
1bbd0b84 | 388 | #undef FUNC_NAME |
f0e9217a | 389 | |
a1ec6916 | 390 | SCM_DEFINE (scm_procedure_name, "procedure-name", 1, 0, 0, |
1bbd0b84 | 391 | (SCM proc), |
ba94f79e | 392 | "Return the name of the procedure @var{proc}") |
1bbd0b84 | 393 | #define FUNC_NAME s_scm_procedure_name |
f0e9217a | 394 | { |
3b3b36dd | 395 | SCM_VALIDATE_PROC (1,proc); |
f0e9217a | 396 | switch (SCM_TYP7 (proc)) { |
a726dd9d MD |
397 | case scm_tcs_subrs: |
398 | return SCM_SNAME (proc); | |
399 | default: | |
f0e9217a | 400 | { |
63c51b9a | 401 | SCM name = scm_procedure_property (proc, scm_sym_name); |
f0e9217a | 402 | #if 0 |
63c51b9a MD |
403 | /* Source property scm_sym_procname not implemented yet... */ |
404 | SCM name = scm_source_property (SCM_CAR (SCM_CDR (SCM_CODE (proc))), scm_sym_procname); | |
f0e9217a | 405 | if (SCM_FALSEP (name)) |
63c51b9a | 406 | name = scm_procedure_property (proc, scm_sym_name); |
f0e9217a | 407 | #endif |
c75512d6 MD |
408 | if (SCM_FALSEP (name) && SCM_CLOSUREP (proc)) |
409 | name = scm_reverse_lookup (SCM_ENV (proc), proc); | |
f0e9217a MD |
410 | return name; |
411 | } | |
f0e9217a MD |
412 | } |
413 | } | |
1bbd0b84 | 414 | #undef FUNC_NAME |
f0e9217a | 415 | |
a1ec6916 | 416 | SCM_DEFINE (scm_procedure_source, "procedure-source", 1, 0, 0, |
1bbd0b84 | 417 | (SCM proc), |
ba94f79e | 418 | "Return the source of the procedure @var{proc}.") |
1bbd0b84 | 419 | #define FUNC_NAME s_scm_procedure_source |
f0e9217a | 420 | { |
6b5a304f | 421 | SCM_VALIDATE_NIM (1,proc); |
f0e9217a MD |
422 | switch (SCM_TYP7 (proc)) { |
423 | case scm_tcs_closures: | |
424 | { | |
4daecfee DH |
425 | SCM formals = SCM_CLOSURE_FORMALS (proc); |
426 | SCM src = scm_source_property (SCM_CDR (SCM_CODE (proc)), scm_sym_copy); | |
427 | if (!SCM_FALSEP (src)) | |
428 | return scm_cons2 (scm_sym_lambda, formals, src); | |
63c51b9a | 429 | return scm_cons (scm_sym_lambda, |
4daecfee DH |
430 | scm_unmemocopy (SCM_CODE (proc), |
431 | SCM_EXTEND_ENV (formals, | |
432 | SCM_EOL, | |
433 | SCM_ENV (proc)))); | |
f0e9217a | 434 | } |
f0e9217a MD |
435 | case scm_tcs_subrs: |
436 | #ifdef CCLO | |
437 | case scm_tc7_cclo: | |
438 | #endif | |
439 | /* It would indeed be a nice thing if we supplied source even for | |
440 | built in procedures! */ | |
63c51b9a | 441 | return scm_procedure_property (proc, scm_sym_source); |
f0e9217a | 442 | default: |
276dd677 DH |
443 | SCM_WRONG_TYPE_ARG (1, proc); |
444 | /* not reached */ | |
f0e9217a MD |
445 | } |
446 | } | |
1bbd0b84 | 447 | #undef FUNC_NAME |
f0e9217a | 448 | |
a1ec6916 | 449 | SCM_DEFINE (scm_procedure_environment, "procedure-environment", 1, 0, 0, |
1bbd0b84 | 450 | (SCM proc), |
ba94f79e | 451 | "Return the environment of the procedure @var{proc}.") |
1bbd0b84 | 452 | #define FUNC_NAME s_scm_procedure_environment |
f0e9217a | 453 | { |
6b5a304f | 454 | SCM_VALIDATE_NIM (1,proc); |
f0e9217a MD |
455 | switch (SCM_TYP7 (proc)) { |
456 | case scm_tcs_closures: | |
457 | return SCM_ENV (proc); | |
f0e9217a MD |
458 | case scm_tcs_subrs: |
459 | #ifdef CCLO | |
460 | case scm_tc7_cclo: | |
461 | #endif | |
462 | return SCM_EOL; | |
463 | default: | |
276dd677 DH |
464 | SCM_WRONG_TYPE_ARG (1, proc); |
465 | /* not reached */ | |
f0e9217a MD |
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 | */ |
a1ec6916 | 478 | SCM_DEFINE (scm_local_eval, "local-eval", 1, 1, 0, |
1bbd0b84 | 479 | (SCM exp, SCM env), |
b380b885 MD |
480 | "Evaluate @var{exp} in its environment. If @var{env} is supplied,\n" |
481 | "it is the environment in which to evaluate @var{exp}. Otherwise,\n" | |
482 | "@var{exp} must be a memoized code object (in which case, its environment\n" | |
483 | "is implicit).") | |
1bbd0b84 | 484 | #define FUNC_NAME s_scm_local_eval |
f0e9217a | 485 | { |
6c179711 MD |
486 | if (SCM_UNBNDP (env)) |
487 | { | |
82b3290d MD |
488 | SCM_VALIDATE_MEMOIZED (1, exp); |
489 | return scm_i_eval_x (SCM_MEMOIZED_EXP (exp), SCM_MEMOIZED_ENV (exp)); | |
6c179711 | 490 | } |
82b3290d | 491 | return scm_i_eval (exp, env); |
f0e9217a | 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 | { | |
22a52da1 | 502 | while (SCM_CONSP (env) && SCM_CONSP (SCM_CAR (env))) |
c75512d6 | 503 | { |
22a52da1 DH |
504 | SCM names = SCM_CAAR (env); |
505 | SCM values = SCM_CDAR (env); | |
0c95b57d | 506 | while (SCM_CONSP (names)) |
c75512d6 | 507 | { |
cffcab30 | 508 | if (SCM_EQ_P (SCM_CAR (values), data)) |
c75512d6 MD |
509 | return SCM_CAR (names); |
510 | names = SCM_CDR (names); | |
511 | values = SCM_CDR (values); | |
512 | } | |
22a52da1 | 513 | if (!SCM_NULLP (names) && SCM_EQ_P (values, data)) |
c75512d6 MD |
514 | return names; |
515 | env = SCM_CDR (env); | |
516 | } | |
517 | return SCM_BOOL_F; | |
518 | } | |
519 | ||
bfe3154c | 520 | SCM |
6e8d25a6 | 521 | scm_start_stack (SCM id, SCM exp, SCM env) |
bfe3154c MD |
522 | { |
523 | SCM answer; | |
92c2555f MV |
524 | scm_t_debug_frame vframe; |
525 | scm_t_debug_info vframe_vect_body; | |
9fa2c7b1 MD |
526 | vframe.prev = scm_last_debug_frame; |
527 | vframe.status = SCM_VOIDFRAME; | |
528 | vframe.vect = &vframe_vect_body; | |
529 | vframe.vect[0].id = id; | |
530 | scm_last_debug_frame = &vframe; | |
82b3290d | 531 | answer = scm_i_eval (exp, env); |
9fa2c7b1 MD |
532 | scm_last_debug_frame = vframe.prev; |
533 | return answer; | |
534 | } | |
535 | ||
b8229a3b MS |
536 | SCM_SYNTAX(s_start_stack, "start-stack", scm_makacro, scm_m_start_stack); |
537 | ||
8a04c1a2 | 538 | static SCM |
6e8d25a6 | 539 | scm_m_start_stack (SCM exp, SCM env) |
68baa7e7 | 540 | #define FUNC_NAME s_start_stack |
9fa2c7b1 | 541 | { |
bfe3154c | 542 | exp = SCM_CDR (exp); |
68baa7e7 DH |
543 | if (!SCM_ECONSP (exp) |
544 | || !SCM_ECONSP (SCM_CDR (exp)) | |
545 | || !SCM_NULLP (SCM_CDDR (exp))) | |
546 | SCM_WRONG_NUM_ARGS (); | |
9fa2c7b1 | 547 | return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env); |
bfe3154c | 548 | } |
68baa7e7 DH |
549 | #undef FUNC_NAME |
550 | ||
f0e9217a MD |
551 | |
552 | /* {Debug Objects} | |
553 | * | |
554 | * The debugging evaluator throws these on frame traps. | |
555 | */ | |
556 | ||
92c2555f | 557 | scm_t_bits scm_tc16_debugobj; |
f0e9217a | 558 | |
f0e9217a | 559 | static int |
e81d98ec | 560 | debugobj_print (SCM obj, SCM port, scm_print_state *pstate SCM_UNUSED) |
f0e9217a | 561 | { |
b7f3516f | 562 | scm_puts ("#<debug-object ", port); |
c209c88e | 563 | scm_intprint ((int) SCM_DEBUGOBJ_FRAME (obj), 16, port); |
b7f3516f | 564 | scm_putc ('>', port); |
f0e9217a MD |
565 | return 1; |
566 | } | |
567 | ||
a1ec6916 | 568 | SCM_DEFINE (scm_debug_object_p, "debug-object?", 1, 0, 0, |
1bbd0b84 | 569 | (SCM obj), |
ba94f79e | 570 | "Return @code{#t} if @var{obj} is a debug object.") |
1bbd0b84 | 571 | #define FUNC_NAME s_scm_debug_object_p |
f0e9217a | 572 | { |
0c95b57d | 573 | return SCM_BOOL(SCM_DEBUGOBJP (obj)); |
f0e9217a | 574 | } |
1bbd0b84 | 575 | #undef FUNC_NAME |
f0e9217a | 576 | |
1cc91f1b | 577 | |
f0e9217a | 578 | SCM |
92c2555f | 579 | scm_make_debugobj (scm_t_debug_frame *frame) |
f0e9217a MD |
580 | { |
581 | register SCM z; | |
f0e9217a | 582 | SCM_NEWCELL (z); |
f83e2737 | 583 | SCM_ENTER_A_SECTION; |
cffcab30 DH |
584 | SCM_SET_DEBUGOBJ_FRAME (z, frame); |
585 | SCM_SET_CELL_TYPE (z, scm_tc16_debugobj); | |
f83e2737 | 586 | SCM_EXIT_A_SECTION; |
f0e9217a MD |
587 | return z; |
588 | } | |
589 | ||
f0e9217a MD |
590 | \f |
591 | ||
fe57f652 MD |
592 | /* Undocumented debugging procedure */ |
593 | #ifdef GUILE_DEBUG | |
a1ec6916 | 594 | SCM_DEFINE (scm_debug_hang, "debug-hang", 0, 1, 0, |
1bbd0b84 | 595 | (SCM obj), |
ba94f79e MG |
596 | "Go into an endless loop, which can be only terminated with\n" |
597 | "a debugger.") | |
1bbd0b84 | 598 | #define FUNC_NAME s_scm_debug_hang |
e38ecb05 MD |
599 | { |
600 | int go = 0; | |
601 | while (!go) ; | |
602 | return SCM_UNSPECIFIED; | |
603 | } | |
1bbd0b84 | 604 | #undef FUNC_NAME |
fe57f652 | 605 | #endif |
e38ecb05 MD |
606 | |
607 | \f | |
608 | ||
f0e9217a MD |
609 | void |
610 | scm_init_debug () | |
611 | { | |
5e8d7fd4 | 612 | scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS); |
ee340120 | 613 | |
e841c3e0 KN |
614 | scm_tc16_memoized = scm_make_smob_type ("memoized", 0); |
615 | scm_set_smob_mark (scm_tc16_memoized, scm_markcdr); | |
616 | scm_set_smob_print (scm_tc16_memoized, memoized_print); | |
23a62151 | 617 | |
e841c3e0 KN |
618 | scm_tc16_debugobj = scm_make_smob_type ("debug-object", 0); |
619 | scm_set_smob_print (scm_tc16_debugobj, debugobj_print); | |
f0e9217a | 620 | |
33b97402 | 621 | #ifdef GUILE_DEBUG |
1be6b49c ML |
622 | scm_c_define ("SCM_IM_AND", SCM_IM_AND); |
623 | scm_c_define ("SCM_IM_BEGIN", SCM_IM_BEGIN); | |
624 | scm_c_define ("SCM_IM_CASE", SCM_IM_CASE); | |
625 | scm_c_define ("SCM_IM_COND", SCM_IM_COND); | |
626 | scm_c_define ("SCM_IM_DO", SCM_IM_DO); | |
627 | scm_c_define ("SCM_IM_IF", SCM_IM_IF); | |
628 | scm_c_define ("SCM_IM_LAMBDA", SCM_IM_LAMBDA); | |
629 | scm_c_define ("SCM_IM_LET", SCM_IM_LET); | |
630 | scm_c_define ("SCM_IM_LETSTAR", SCM_IM_LETSTAR); | |
631 | scm_c_define ("SCM_IM_LETREC", SCM_IM_LETREC); | |
632 | scm_c_define ("SCM_IM_OR", SCM_IM_OR); | |
633 | scm_c_define ("SCM_IM_QUOTE", SCM_IM_QUOTE); | |
634 | scm_c_define ("SCM_IM_SET_X", SCM_IM_SET_X); | |
635 | scm_c_define ("SCM_IM_DEFINE", SCM_IM_DEFINE); | |
636 | scm_c_define ("SCM_IM_APPLY", SCM_IM_APPLY); | |
637 | scm_c_define ("SCM_IM_CONT", SCM_IM_CONT); | |
638 | scm_c_define ("SCM_IM_DISPATCH", SCM_IM_DISPATCH); | |
33b97402 | 639 | #endif |
f0e9217a MD |
640 | scm_add_feature ("debug-extensions"); |
641 | ||
8dc9439f | 642 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 643 | #include "libguile/debug.x" |
8dc9439f | 644 | #endif |
f0e9217a | 645 | } |
89e00824 ML |
646 | |
647 | /* | |
648 | Local Variables: | |
649 | c-file-style: "gnu" | |
650 | End: | |
651 | */ |