| 1 | /* Debugging extensions for Guile |
| 2 | * Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation |
| 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 |
| 16 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
| 17 | * Boston, MA 02111-1307 USA |
| 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 |
| 44 | * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */ |
| 45 | |
| 46 | #include <stdio.h> |
| 47 | #include "_scm.h" |
| 48 | #include "eval.h" |
| 49 | #include "stackchk.h" |
| 50 | #include "throw.h" |
| 51 | #include "genio.h" |
| 52 | #include "macros.h" |
| 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" |
| 61 | #include "dynwind.h" |
| 62 | |
| 63 | #include "debug.h" |
| 64 | \f |
| 65 | |
| 66 | /* {Run time control of the debugging evaluator} |
| 67 | */ |
| 68 | |
| 69 | SCM_PROC (s_debug_options, "debug-options-interface", 0, 1, 0, scm_debug_options); |
| 70 | |
| 71 | SCM |
| 72 | scm_debug_options (setting) |
| 73 | SCM setting; |
| 74 | { |
| 75 | SCM ans; |
| 76 | SCM_DEFER_INTS; |
| 77 | ans = scm_options (setting, |
| 78 | scm_debug_opts, |
| 79 | SCM_N_DEBUG_OPTIONS, |
| 80 | s_debug_options); |
| 81 | #ifndef SCM_RECKLESS |
| 82 | if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE)) |
| 83 | { |
| 84 | scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, s_debug_options); |
| 85 | scm_out_of_range (s_debug_options, setting); |
| 86 | } |
| 87 | #endif |
| 88 | SCM_RESET_DEBUG_MODE; |
| 89 | scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P; |
| 90 | scm_debug_eframe_size = 2 * SCM_N_FRAMES; |
| 91 | SCM_ALLOW_INTS |
| 92 | return ans; |
| 93 | } |
| 94 | |
| 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 | } |
| 118 | |
| 119 | SCM |
| 120 | scm_with_traps (SCM thunk) |
| 121 | { |
| 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); |
| 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 | |
| 144 | |
| 145 | static int prinmemoized SCM_P ((SCM obj, SCM port, scm_print_state *pstate)); |
| 146 | |
| 147 | static int |
| 148 | prinmemoized (obj, port, pstate) |
| 149 | SCM obj; |
| 150 | SCM port; |
| 151 | scm_print_state *pstate; |
| 152 | { |
| 153 | int writingp = SCM_WRITINGP (pstate); |
| 154 | scm_puts ("#<memoized ", port); |
| 155 | SCM_SET_WRITINGP (pstate, 1); |
| 156 | #ifdef GUILE_DEBUG |
| 157 | scm_iprin1 (SCM_MEMOIZED_EXP (obj), port, pstate); |
| 158 | #else |
| 159 | scm_iprin1 (scm_unmemoize (obj), port, pstate); |
| 160 | #endif |
| 161 | SCM_SET_WRITINGP (pstate, writingp); |
| 162 | scm_putc ('>', port); |
| 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); |
| 170 | |
| 171 | SCM |
| 172 | scm_memoized_p (obj) |
| 173 | SCM obj; |
| 174 | { |
| 175 | return SCM_NIMP (obj) && SCM_MEMOIZEDP (obj) ? SCM_BOOL_T : SCM_BOOL_F; |
| 176 | } |
| 177 | |
| 178 | SCM |
| 179 | scm_make_memoized (exp, env) |
| 180 | SCM exp; |
| 181 | SCM env; |
| 182 | { |
| 183 | /* *fixme* Check that env is a valid environment. */ |
| 184 | register SCM z, ans; |
| 185 | SCM_ENTER_A_SECTION; |
| 186 | SCM_NEWCELL (z); |
| 187 | SCM_SETCDR (z, env); |
| 188 | SCM_SETCAR (z, exp); |
| 189 | SCM_NEWCELL (ans); |
| 190 | SCM_SETCDR (ans, z); |
| 191 | SCM_SETCAR (ans, scm_tc16_memoized); |
| 192 | SCM_EXIT_A_SECTION; |
| 193 | return ans; |
| 194 | } |
| 195 | |
| 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 | |
| 402 | SCM_PROC (s_unmemoize, "unmemoize", 1, 0, 0, scm_unmemoize); |
| 403 | |
| 404 | SCM |
| 405 | scm_unmemoize (m) |
| 406 | SCM m; |
| 407 | { |
| 408 | SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize); |
| 409 | return scm_unmemocopy (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m)); |
| 410 | } |
| 411 | |
| 412 | SCM_PROC (s_memoized_environment, "memoized-environment", 1, 0, 0, scm_memoized_environment); |
| 413 | |
| 414 | SCM |
| 415 | scm_memoized_environment (m) |
| 416 | SCM m; |
| 417 | { |
| 418 | SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize); |
| 419 | return SCM_MEMOIZED_ENV (m); |
| 420 | } |
| 421 | |
| 422 | SCM_PROC (s_procedure_name, "procedure-name", 1, 0, 0, scm_procedure_name); |
| 423 | |
| 424 | SCM |
| 425 | scm_procedure_name (proc) |
| 426 | SCM proc; |
| 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: |
| 434 | case scm_tc7_cclo: |
| 435 | { |
| 436 | SCM name = scm_procedure_property (proc, scm_i_name); |
| 437 | #if 0 |
| 438 | /* Source property scm_i_procname not implemented yet... */ |
| 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 |
| 443 | if (SCM_FALSEP (name)) |
| 444 | name = scm_procedure_property (proc, scm_i_inner_name); |
| 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); |
| 455 | |
| 456 | SCM |
| 457 | scm_procedure_source (proc) |
| 458 | SCM proc; |
| 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, |
| 471 | SCM_EXTEND_ENV (SCM_CAR (src), |
| 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); |
| 490 | |
| 491 | SCM |
| 492 | scm_procedure_environment (proc) |
| 493 | SCM proc; |
| 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 | |
| 511 | \f |
| 512 | |
| 513 | /* Eval in a local environment. We would like to have the ability to |
| 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. |
| 518 | */ |
| 519 | SCM_PROC (s_local_eval, "local-eval", 1, 1, 0, scm_local_eval); |
| 520 | |
| 521 | SCM |
| 522 | scm_local_eval (exp, env) |
| 523 | SCM exp; |
| 524 | SCM env; |
| 525 | { |
| 526 | if (SCM_UNBNDP (env)) |
| 527 | { |
| 528 | SCM_ASSERT (SCM_NIMP (exp) && SCM_MEMOIZEDP (exp), exp, SCM_ARG1, s_local_eval); |
| 529 | return scm_eval_3 (SCM_MEMOIZED_EXP (exp), 0, SCM_MEMOIZED_ENV (exp)); |
| 530 | } |
| 531 | return scm_eval_3 (exp, 1, env); |
| 532 | } |
| 533 | |
| 534 | SCM |
| 535 | scm_start_stack (id, exp, env) |
| 536 | SCM id; |
| 537 | SCM exp; |
| 538 | SCM env; |
| 539 | { |
| 540 | SCM answer; |
| 541 | scm_debug_frame vframe; |
| 542 | scm_debug_info vframe_vect_body; |
| 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; |
| 548 | answer = scm_eval_3 (exp, 1, env); |
| 549 | scm_last_debug_frame = vframe.prev; |
| 550 | return answer; |
| 551 | } |
| 552 | |
| 553 | static char s_start_stack[] = "start-stack"; |
| 554 | static SCM |
| 555 | scm_m_start_stack (exp, env) |
| 556 | SCM exp; |
| 557 | SCM env; |
| 558 | { |
| 559 | exp = SCM_CDR (exp); |
| 560 | SCM_ASSERT (SCM_NIMP (exp) |
| 561 | && SCM_ECONSP (exp) |
| 562 | && SCM_NIMP (SCM_CDR (exp)) |
| 563 | && SCM_ECONSP (SCM_CDR (exp)) |
| 564 | && SCM_NULLP (SCM_CDDR (exp)), |
| 565 | exp, |
| 566 | SCM_WNA, |
| 567 | s_start_stack); |
| 568 | return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env); |
| 569 | } |
| 570 | |
| 571 | /* {Debug Objects} |
| 572 | * |
| 573 | * The debugging evaluator throws these on frame traps. |
| 574 | */ |
| 575 | |
| 576 | long scm_tc16_debugobj; |
| 577 | |
| 578 | static int prindebugobj SCM_P ((SCM obj, SCM port, scm_print_state *pstate)); |
| 579 | |
| 580 | static int |
| 581 | prindebugobj (obj, port, pstate) |
| 582 | SCM obj; |
| 583 | SCM port; |
| 584 | scm_print_state *pstate; |
| 585 | { |
| 586 | scm_puts ("#<debug-object ", port); |
| 587 | scm_intprint (SCM_DEBUGOBJ_FRAME (obj), 16, port); |
| 588 | scm_putc ('>', port); |
| 589 | return 1; |
| 590 | } |
| 591 | |
| 592 | static scm_smobfuns debugobjsmob = |
| 593 | {0, scm_free0, prindebugobj, 0}; |
| 594 | |
| 595 | SCM_PROC (s_debug_object_p, "debug-object?", 1, 0, 0, scm_debug_object_p); |
| 596 | |
| 597 | SCM |
| 598 | scm_debug_object_p (obj) |
| 599 | SCM obj; |
| 600 | { |
| 601 | return SCM_NIMP (obj) && SCM_DEBUGOBJP (obj) ? SCM_BOOL_T : SCM_BOOL_F; |
| 602 | } |
| 603 | |
| 604 | |
| 605 | SCM |
| 606 | scm_make_debugobj (frame) |
| 607 | scm_debug_frame *frame; |
| 608 | { |
| 609 | register SCM z; |
| 610 | SCM_NEWCELL (z); |
| 611 | SCM_ENTER_A_SECTION; |
| 612 | SCM_SET_DEBUGOBJ_FRAME (z, (SCM) frame); |
| 613 | SCM_SETCAR (z, scm_tc16_debugobj); |
| 614 | SCM_EXIT_A_SECTION; |
| 615 | return z; |
| 616 | } |
| 617 | |
| 618 | \f |
| 619 | |
| 620 | /* Undocumented debugging procedure */ |
| 621 | #ifdef GUILE_DEBUG |
| 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 | } |
| 632 | #endif |
| 633 | |
| 634 | \f |
| 635 | |
| 636 | void |
| 637 | scm_init_debug () |
| 638 | { |
| 639 | scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS); |
| 640 | |
| 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 | |
| 651 | scm_make_synt (s_start_stack, scm_makacro, scm_m_start_stack); |
| 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 |
| 671 | scm_add_feature ("debug-extensions"); |
| 672 | |
| 673 | #include "debug.x" |
| 674 | } |