-/* Debugging extensions for Guile
- Copyright (C) 1995, 1996 Mikael Djurfeldt
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- The author can be reached at djurfeldt@nada.kth.se
- Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN
- */
-
-#include <stdio.h>
-#include "_scm.h"
-
-\f
-
-/* {Run time control of the debugging evaluator}
- */
-
-SCM_PROC (s_debug_options, "debug-options", 0, 1, 0, scm_debug_options);
-#ifdef __STDC__
-SCM
-scm_debug_options (SCM new_values)
-#else
-SCM
-scm_debug_options (new_values)
- SCM new_values;
-#endif
-{
- SCM ans;
- SCM_DEFER_INTS;
- ans = scm_change_options (new_values,
- scm_debug_opts,
- N_DEBUG_OPTIONS,
- s_debug_options);
-#ifndef SCM_RECKLESS
- if (!(1 <= FRAMES && FRAMES <= MAXFRAMESIZE))
- {
- scm_change_options (ans, scm_debug_opts, N_DEBUG_OPTIONS, s_debug_options);
- /* *fixme* Should SCM_ALLOW_INTS be called here? */
- scm_wta (new_values, (char *) SCM_OUTOFRANGE, "frames");
- }
-#endif
- RESET_DEBUG_MODE;
- scm_debug_eframe_size = 2 * FRAMES;
- SCM_ALLOW_INTS
- return ans;
-}
-
-SCM_PROC (s_evaluator_traps, "evaluator-traps", 0, 1, 0, scm_evaluator_traps);
-#ifdef __STDC__
-SCM
-scm_evaluator_traps (SCM new_values)
-#else
-SCM
-scm_evaluator_traps (new_values)
- SCM new_values;
-#endif
-{
- SCM ans;
- SCM_DEFER_INTS;
- ans = scm_change_options (new_values,
- scm_evaluator_trap_table,
- N_EVALUATOR_TRAPS,
- s_evaluator_traps);
- RESET_DEBUG_MODE;
- SCM_ALLOW_INTS
- return ans;
-}
-
-SCM_PROC (s_single_step, "single-step", 2, 0, 0, scm_single_step);
-#ifdef __STDC__
-SCM
-scm_single_step (SCM cont, SCM val)
-#else
-SCM
-scm_single_step (val)
- SCM cont, SCM val;
-#endif
-{
- SCM_DEFER_INTS;
- ENTER_FRAME = EXIT_FRAME = 1;
- RESET_DEBUG_MODE;
- SCM_ALLOW_INTS;
- scm_throw (cont, val);
- return SCM_BOOL_F; /* never returns */
-}
-
-\f
-static SCM scm_i_source, scm_i_more;
-static SCM scm_i_proc, scm_i_args, scm_i_eval_args;
-static SCM scm_i_procname;
-
-/* {Memoized Source}
- */
-
-long scm_tc16_memoized;
-
-#ifdef __STDC__
-static int
-prinmemoized (SCM obj, SCM port, int writing)
-#else
-static int
-prinmemoized (obj, port, writing)
- SCM obj;
- SCM port;
- int writing;
-#endif
-{
- scm_gen_puts (scm_regular_string, "#<memoized ", port);
- scm_iprin1 (scm_unmemoize (obj), port, 1);
- scm_gen_putc ('>', port);
- return 1;
-}
-
-static scm_smobfuns memoizedsmob =
-{scm_markcdr, scm_free0, prinmemoized, 0};
-
-SCM_PROC (s_memoized_p, "memoized?", 1, 0, 0, scm_memoized_p);
-#ifdef __STDC__
-SCM
-scm_memoized_p (SCM obj)
-#else
-SCM
-scm_memoized_p (obj)
- SCM obj;
-#endif
-{
- return SCM_NIMP (obj) && SCM_MEMOIZEDP (obj) ? SCM_BOOL_T : SCM_BOOL_F;
-}
-
-#ifdef __STDC__
-SCM
-scm_make_memoized (SCM exp, SCM env)
-#else
-SCM
-scm_make_memoized (env)
- SCM exp, SCM env;
-#endif
-{
- register SCM z, ans;
- SCM_DEFER_INTS;
- SCM_NEWCELL (z);
- SCM_CAR (z) = exp;
- SCM_CDR (z) = env;
- SCM_NEWCELL (ans);
- SCM_CAR (ans) = scm_tc16_memoized;
- SCM_CDR (ans) = z;
- SCM_ALLOW_INTS;
- return ans;
-}
-
-SCM_PROC (s_unmemoize, "unmemoize", 1, 0, 0, scm_unmemoize);
-#ifdef __STDC__
-SCM
-scm_unmemoize (SCM m)
-#else
-SCM
-scm_unmemoize (m)
- SCM m;
-#endif
-{
- SCM_ASSERT (SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize);
- return scm_unmemocopy (SCM_MEMOEXP (m), SCM_MEMOENV (m));
-}
-
-SCM_PROC (s_memoized_environment, "memoized-environment", 1, 0, 0, scm_memoized_environment);
-#ifdef __STDC__
-SCM
-scm_memoized_environment (SCM m)
-#else
-SCM
-scm_memoized_environment (m)
- SCM m;
-#endif
-{
- SCM_ASSERT (SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize);
- return SCM_MEMOENV (m);
-}
-
-SCM_PROC (s_procedure_name, "procedure-name", 1, 0, 0, scm_procedure_name);
-#ifdef __STDC__
-SCM
-scm_procedure_name (SCM proc)
-#else
-SCM
-scm_procedure_name (proc)
- SCM proc;
-#endif
-{
- SCM_ASSERT(scm_procedure_p (proc) == SCM_BOOL_T,
- proc,
- SCM_ARG1,
- s_procedure_name);
- switch (SCM_TYP7 (proc)) {
- case scm_tcs_closures:
- {
- SCM name = scm_procedure_property (proc, scm_i_name);
-#if 0
- /* Procedure property scm_i_procname not implemented yet... */
- SCM name = scm_source_property (SCM_CAR (SCM_CDR (SCM_CODE (proc))), scm_i_procname);
- if (SCM_FALSEP (name))
- name = scm_procedure_property (proc, scm_i_name);
-#endif
- return name;
- }
- case scm_tcs_subrs:
- return SCM_SNAME (proc);
- default:
- return SCM_BOOL_F;
- }
-}
-
-SCM_PROC (s_procedure_source, "procedure-source", 1, 0, 0, scm_procedure_source);
-#ifdef __STDC__
-SCM
-scm_procedure_source (SCM proc)
-#else
-SCM
-scm_procedure_source (proc)
- SCM proc;
-#endif
-{
- SCM_ASSERT(SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_source);
- switch (SCM_TYP7 (proc)) {
- case scm_tcs_closures:
- {
- SCM src;
- src = scm_source_property (SCM_CDR (SCM_CODE (proc)), scm_i_copy);
- if (src != SCM_BOOL_F)
- return scm_cons2 (scm_i_lambda, SCM_CAR (SCM_CODE (proc)), src);
- src = SCM_CODE (proc);
- return scm_cons (scm_i_lambda,
- scm_unmemocopy (src,
- SCM_EXTEND_SCM_ENV (SCM_CAR (src),
- SCM_EOL,
- SCM_ENV (proc))));
- }
- case scm_tc7_contin:
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
- /* It would indeed be a nice thing if we supplied source even for
- built in procedures! */
- return scm_procedure_property (proc, scm_i_source);
- default:
- scm_wta (proc, (char *) SCM_ARG1, s_procedure_source);
- return 0;
- }
-}
-
-SCM_PROC (s_procedure_environment, "procedure-environment", 1, 0, 0, scm_procedure_environment);
-#ifdef __STDC__
-SCM
-scm_procedure_environment (SCM proc)
-#else
-SCM
-scm_procedure_environment (proc)
- SCM proc;
-#endif
-{
- SCM_ASSERT (SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_environment);
- switch (SCM_TYP7 (proc)) {
- case scm_tcs_closures:
- return SCM_ENV (proc);
- case scm_tc7_contin:
- case scm_tcs_subrs:
-#ifdef CCLO
- case scm_tc7_cclo:
-#endif
- return SCM_EOL;
- default:
- scm_wta (proc, (char *) SCM_ARG1, s_procedure_environment);
- return 0;
- }
-}
-
-
-/* Eval in a local environment. We would like to have the ability to
- * evaluate in a specified local environment, but due to the memoization
- * this isn't normally possible. We solve it by copying the code before
- * evaluating. Probably the best solution would be to have eval.c generate
- * yet another evaluator. They are not very big actually.
- */
-SCM_PROC (s_local_eval, "local-eval", 2, 0, 0, scm_local_eval);
-#ifdef __STDC__
-SCM
-scm_local_eval (SCM exp, SCM env)
-#else
-SCM
-scm_local_eval (exp, env)
- SCM exp;
- SCM env;
-#endif
-{
- return scm_eval_3 (exp, 1, env);
-}
-
-/* {Stack Frames}
- *
- * The stack is a list of stackframes, from root to current.
- *
- * A stackframe is a list of virtual stackframes, which occur due to
- * the evaluators tail recursion. A virtual stackframe normally
- * corresponds to an eval/apply pair, but macros and special forms
- * (which are implemented as macros in scm...) only have eval
- * information and apply calls leads to apply only frames.
- *
- * A virtual stackframe is either a property list or the symbol
- * ... which marks the location of virtual stackframes which could not
- * be stored with the current debug-depth.
- *
- * Property Type Description
- *
- * These three only present in eval frames:
- *
- * sexpr memoized Source code expression and environment.
- * proc procedure The procedure being applied.
- * (Not present if pre-apply state.)
- * args list The arguments evaluated so far.
- * eval-args boolean True if evaluation of arguments not finished.
- */
-
-/* {Debug Objects}
- *
- * The debugging evaluator throws these on frame traps.
- */
-
-long scm_tc16_debugobj;
-
-#define DEBUGOBJP(x) (scm_tc16_debugobj == SCM_TYP16 (x))
-#define DBGFRAME(x) SCM_CDR (x)
-
-#ifdef __STDC__
-static int
-prindebugobj (SCM obj, SCM port, int writing)
-#else
-static int
-prindebugobj (writing)
- SCM obj, SCM port, int writing;
-#endif
-{
- scm_gen_puts (scm_regular_string, "#<debug-object ", port);
- scm_intprint (DBGFRAME (obj), 16, port);
- scm_gen_putc ('>', port);
- return 1;
-}
-
-static scm_smobfuns debugobjsmob =
-{scm_mark0, scm_free0, prindebugobj, 0};
-
-SCM_PROC (s_debug_object_p, "debug-object?", 1, 0, 0, scm_debug_object_p);
-#ifdef __STDC__
-SCM
-scm_debug_object_p (SCM obj)
-#else
-SCM
-scm_debug_object_p (obj)
- SCM obj;
-#endif
-{
- return SCM_NIMP (obj) && DEBUGOBJP (obj) ? SCM_BOOL_T : SCM_BOOL_F;
-}
-
-#ifdef __STDC__
-SCM
-scm_make_debugobj (scm_debug_frame *frame)
-#else
-SCM
-scm_make_debugobj (frame)
- scm_debug_frame *frame;
-#endif
-{
- register SCM z;
- SCM_DEFER_INTS;
- SCM_NEWCELL (z);
- SCM_CAR (z) = scm_tc16_debugobj;
- DBGFRAME (z) = (SCM) frame;
- SCM_ALLOW_INTS;
- return z;
-}
-
-#ifdef __STDC__
-static SCM
-_scm_stack_frame_to_plist (scm_debug_frame *frame, long offset)
-#else
-static SCM
-_scm_stack_frame_to_plist (frame, offset)
- scm_debug_frame *frame;
- long offset;
-#endif
-{
- int size;
- scm_debug_info *info;
- if (EVALFRAMEP (*frame))
- {
- size = frame->status & MAXFRAMESIZE;
- info = (scm_debug_info *) (*((SCM_STACKITEM **) &frame->vect[size]) + offset);
- if ((info - frame->vect) & 1)
- {
- /* Debug.vect ends with apply info. */
- SCM p;
- --info;
- if (info[1].a.proc == SCM_UNDEFINED)
- p = SCM_EOL;
- else
- p = scm_acons (scm_i_proc,
- info[1].a.proc,
- scm_acons (scm_i_args,
- info[1].a.args,
- ARGSREADYP (*frame)
- ? SCM_EOL
- : scm_acons (scm_i_eval_args,
- SCM_BOOL_T,
- SCM_EOL)));
- return scm_acons (scm_i_source,
- scm_make_memoized (info[0].e.exp, info[0].e.env),
- p);
- }
- else
- /* Debug.vect ends with eval info. */
- return scm_acons (scm_i_source,
- scm_make_memoized (info[0].e.exp, info[0].e.env),
- SCM_EOL);
- }
- else
- return scm_acons (scm_i_proc,
- frame->vect[0].a.proc,
- scm_acons (scm_i_args, frame->vect[0].a.args, SCM_EOL));
-}
-
-SCM_PROC (s_last_stack_frame, "last-stack-frame", 1, 0, 0, scm_last_stack_frame);
-#ifdef __STDC__
-SCM
-scm_last_stack_frame (SCM obj)
-#else
-SCM
-scm_last_stack_frame (obj)
- SCM obj;
-#endif
-{
- scm_debug_frame *frame;
- long offset = 0;
- SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_last_stack_frame);
- if (scm_tc16_debugobj == SCM_TYP16 (obj))
- frame = (scm_debug_frame *) DBGFRAME (obj);
- else if (scm_tc7_contin == SCM_TYP7 (obj))
- {
- frame = SCM_DFRAME (obj);
- offset = (SCM_STACKITEM *) (SCM_CHARS (obj) + sizeof (regs)) - SCM_BASE (obj);
-#ifndef STACK_GROWS_UP
- offset += SCM_LENGTH (obj);
-#endif
- }
- else scm_wta (obj, (char *) SCM_ARG1, s_last_stack_frame);
- if (!frame)
- return SCM_BOOL_F;
- return _scm_stack_frame_to_plist ((scm_debug_frame *) ((SCM_STACKITEM *) frame + offset), offset);
-}
-
-/* Make a scheme object of the current evaluation stack.
- */
-
-SCM_PROC (s_expr_stack, "expr-stack", 0, 1, 0, scm_expr_stack);
-#ifdef __STDC__
-SCM
-scm_expr_stack (SCM obj)
-#else
-SCM
-scm_expr_stack (obj)
- SCM obj;
-#endif
-{
- SCM frs = SCM_EOL, vfrs, p;
- int size;
- int max_vfrs = BACKTRACE_DEPTH;
- scm_debug_info *info;
- scm_debug_frame *frame;
- long offset = 0;
- if (SCM_UNBNDP (obj))
- frame = last_debug_info_frame;
- else
- {
- SCM_ASSERT (SCM_NIMP (obj), obj, SCM_ARG1, s_expr_stack);
- if (scm_tc16_debugobj == SCM_TYP16 (obj))
- frame = (scm_debug_frame *) DBGFRAME (obj);
- else if (scm_tc7_contin == SCM_TYP7 (obj))
- {
- frame = SCM_DFRAME (obj);
- offset = (SCM_STACKITEM *) (SCM_CHARS (obj) + sizeof (regs)) - SCM_BASE (obj);
-#ifndef STACK_GROWS_UP
- offset += SCM_LENGTH (obj);
-#endif
- }
- else scm_wta (obj, (char *) SCM_ARG1, s_expr_stack);
- }
- for (; frame && max_vfrs > 0; frame = frame->prev)
- {
- frame = (scm_debug_frame *) ((SCM_STACKITEM *) frame + offset);
- p = _scm_stack_frame_to_plist (frame, offset);
- if (EVALFRAMEP (*frame))
- {
- size = frame->status & MAXFRAMESIZE;
- info = (scm_debug_info *) (*((SCM_STACKITEM **) &frame->vect[size]) + offset);
- vfrs = SCM_EOL;
- if ((info - frame->vect) & 1)
- --info;
- /* Data in the apply part of an eval info frame comes from
- previous stack frame if the scm_debug_info vector is overflowed. */
- else if (OVERFLOWP (*frame)
- && !SCM_UNBNDP (info[1].a.proc))
- {
- vfrs = scm_cons (p, SCM_EOL);
- --max_vfrs;
- p = scm_acons (scm_i_proc,
- info[1].a.proc,
- scm_acons (scm_i_args, info[1].a.args, SCM_EOL));
- }
- info -= 2;
- vfrs = scm_cons (p, vfrs);
- --max_vfrs;
- if (OVERFLOWP (*frame))
- vfrs = scm_cons (scm_i_more, vfrs);
- while (info >= frame->vect)
- {
- p = SCM_EOL;
- if (!SCM_UNBNDP (info[1].a.proc))
- p = scm_acons (scm_i_proc,
- info[1].a.proc,
- scm_acons (scm_i_args, info[1].a.args, SCM_EOL));
- p = scm_acons (scm_i_source,
- scm_make_memoized (info[0].e.exp, info[0].e.env),
- p);
- info -= 2;
- vfrs = scm_cons (p, vfrs);
- --max_vfrs;
- }
- }
- else
- {
- vfrs = scm_cons (p, SCM_EOL);
- --max_vfrs;
- }
- frs = scm_cons (vfrs, frs);
- }
- if (max_vfrs <= 0)
- frs = scm_cons (scm_i_more, frs);
- return frs;
-}
-
-/* {Support for debugging with gdb}
- *
- * Gdb's support for debugging with Guile is written by Per Bothner at
- * Cygnus Support.
- */
-
-/* debug_print is a handy function for calling from a debugger.
- * Given an SCM object, o, it executes (write o) to stdout.
- */
-
-void debug_print (SCM o)
-{
- scm_write(o, scm_def_outp);
- fflush(NULL);
-}
-
-SCM_PROC (s_eval_string, "eval-string", 1, 0, 0, scm_eval_string);
-#ifdef __STDC__
-SCM
-scm_eval_string (SCM str)
-#else
-SCM
-scm_eval_string (str)
- SCM str;
-#endif
-{
- str = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG, s_eval_string);
- str = scm_read (str, SCM_UNDEFINED, SCM_UNDEFINED);
- return XEVAL(str, (SCM) SCM_EOL);
-}
-
-#ifdef __STDC__
-SCM
-scm_evstr (char *str)
-#else
-SCM
-scm_evstr (str)
- char *str;
-#endif
-{
- SCM lsym;
- SCM_NEWCELL(lsym);
- SCM_SETLENGTH (lsym, strlen(str)+0L, scm_tc7_ssymbol);
- SCM_SETCHARS (lsym, str);
- return scm_eval_string (lsym);
-}
-
-#ifdef __STDC__
-SCM
-scm_lookup_cstr (char *str, int len, SCM env)
-#else
-SCM
-scm_lookup_cstr (str, len, env)
- char *str;
- int len;
- SCM env;
-#endif
-{
- SCM sym = scm_intern (str, len);
- SCM cell = scm_cons (sym, SCM_UNDEFINED);
- return (*scm_lookupcar (cell, env));
-}
-
-
-\f
-
-void
-scm_init_debug ()
-{
- scm_init_opts (scm_debug_options, scm_debug_opts, N_DEBUG_OPTIONS);
-
- scm_tc16_memoized = scm_newsmob (&memoizedsmob);
- scm_tc16_debugobj = scm_newsmob (&debugobjsmob);
-
- scm_i_procname = SCM_CAR (scm_sysintern ("procname", SCM_UNDEFINED));
- scm_i_more = SCM_CAR (scm_sysintern ("...", SCM_UNDEFINED));
- scm_i_source = SCM_CAR (scm_sysintern ("source", SCM_UNDEFINED));
- scm_i_proc = SCM_CAR (scm_sysintern ("proc", SCM_UNDEFINED));
- scm_i_args = SCM_CAR (scm_sysintern ("args", SCM_UNDEFINED));
- scm_i_eval_args = SCM_CAR (scm_sysintern ("eval-args", SCM_UNDEFINED));
-
- scm_add_feature ("debug-extensions");
-
-#include "debug.x"
-}
+/* Debugging extensions for Guile
+ * Copyright (C) 1995, 1996 Free Software Foundation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307 USA
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE. If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way. To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.
+ *
+ * The author can be reached at djurfeldt@nada.kth.se
+ * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */
+
+#include <stdio.h>
+#include "_scm.h"
+#include "eval.h"
+#include "throw.h"
+#include "genio.h"
+#include "smob.h"
+#include "procprop.h"
+#include "srcprop.h"
+#include "alist.h"
+#include "continuations.h"
+#include "strports.h"
+#include "read.h"
+#include "feature.h"
+
+#include "debug.h"
+\f
+
+/* {Run time control of the debugging evaluator}
+ */
+
+SCM_PROC (s_debug_options, "debug-options-interface", 0, 1, 0, scm_debug_options);
+
+SCM
+scm_debug_options (setting)
+ SCM setting;
+{
+ SCM ans;
+ SCM_DEFER_INTS;
+ ans = scm_options (setting,
+ scm_debug_opts,
+ SCM_N_DEBUG_OPTIONS,
+ s_debug_options);
+#ifndef SCM_RECKLESS
+ if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE))
+ {
+ scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, s_debug_options);
+ scm_out_of_range (s_debug_options, setting);
+ }
+#endif
+ SCM_RESET_DEBUG_MODE;
+ scm_debug_eframe_size = 2 * SCM_N_FRAMES;
+ SCM_ALLOW_INTS
+ return ans;
+}
+
+SCM_PROC (s_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, scm_evaluator_traps);
+
+SCM
+scm_evaluator_traps (setting)
+ SCM setting;
+{
+ SCM ans;
+ SCM_DEFER_INTS;
+ ans = scm_options (setting,
+ scm_evaluator_trap_table,
+ SCM_N_EVALUATOR_TRAPS,
+ s_evaluator_traps);
+ SCM_RESET_DEBUG_MODE;
+ SCM_ALLOW_INTS
+ return ans;
+}
+
+SCM_PROC (s_single_step, "single-step", 2, 0, 0, scm_single_step);
+
+SCM
+scm_single_step (cont, val)
+ SCM cont;
+ SCM val;
+{
+ SCM_DEFER_INTS;
+ SCM_ENTER_FRAME_P = SCM_EXIT_FRAME_P = 1;
+ SCM_RESET_DEBUG_MODE;
+ SCM_ALLOW_INTS;
+ scm_call_continuation (cont, val);
+ return SCM_BOOL_F; /* never returns */
+}
+
+\f
+static SCM scm_i_source, scm_i_more;
+static SCM scm_i_proc, scm_i_args, scm_i_eval_args;
+static SCM scm_i_procname;
+
+/* {Memoized Source}
+ */
+
+long scm_tc16_memoized;
+
+
+static int prinmemoized SCM_P ((SCM obj, SCM port, scm_print_state *pstate));
+
+static int
+prinmemoized (obj, port, pstate)
+ SCM obj;
+ SCM port;
+ scm_print_state *pstate;
+{
+ int writingp = SCM_WRITINGP (pstate);
+ scm_gen_puts (scm_regular_string, "#<memoized ", port);
+ SCM_SET_WRITINGP (pstate, 1);
+ scm_iprin1 (scm_unmemoize (obj), port, pstate);
+ SCM_SET_WRITINGP (pstate, writingp);
+ scm_gen_putc ('>', port);
+ return 1;
+}
+
+static scm_smobfuns memoizedsmob =
+{scm_markcdr, scm_free0, prinmemoized, 0};
+
+SCM_PROC (s_memoized_p, "memoized?", 1, 0, 0, scm_memoized_p);
+
+SCM
+scm_memoized_p (obj)
+ SCM obj;
+{
+ return SCM_NIMP (obj) && SCM_MEMOIZEDP (obj) ? SCM_BOOL_T : SCM_BOOL_F;
+}
+
+SCM
+scm_make_memoized (exp, env)
+ SCM exp;
+ SCM env;
+{
+ /* *fixme* Check that env is a valid environment. */
+ register SCM z, ans;
+ SCM_DEFER_INTS;
+ SCM_NEWCELL (z);
+ SCM_SETCAR (z, exp);
+ SCM_SETCDR (z, env);
+ SCM_NEWCELL (ans);
+ SCM_SETCAR (ans, scm_tc16_memoized);
+ SCM_SETCDR (ans, z);
+ SCM_ALLOW_INTS;
+ return ans;
+}
+
+SCM_PROC (s_unmemoize, "unmemoize", 1, 0, 0, scm_unmemoize);
+
+SCM
+scm_unmemoize (m)
+ SCM m;
+{
+ SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize);
+ return scm_unmemocopy (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m));
+}
+
+SCM_PROC (s_memoized_environment, "memoized-environment", 1, 0, 0, scm_memoized_environment);
+
+SCM
+scm_memoized_environment (m)
+ SCM m;
+{
+ SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize);
+ return SCM_MEMOIZED_ENV (m);
+}
+
+SCM_PROC (s_procedure_name, "procedure-name", 1, 0, 0, scm_procedure_name);
+
+SCM
+scm_procedure_name (proc)
+ SCM proc;
+{
+ SCM_ASSERT(scm_procedure_p (proc) == SCM_BOOL_T,
+ proc,
+ SCM_ARG1,
+ s_procedure_name);
+ switch (SCM_TYP7 (proc)) {
+ case scm_tcs_closures:
+ case scm_tc7_cclo:
+ {
+ SCM name = scm_procedure_property (proc, scm_i_name);
+#if 0
+ /* Procedure property scm_i_procname not implemented yet... */
+ SCM name = scm_source_property (SCM_CAR (SCM_CDR (SCM_CODE (proc))), scm_i_procname);
+ if (SCM_FALSEP (name))
+ name = scm_procedure_property (proc, scm_i_name);
+#endif
+ return name;
+ }
+ case scm_tcs_subrs:
+ return SCM_SNAME (proc);
+ default:
+ return SCM_BOOL_F;
+ }
+}
+
+SCM_PROC (s_procedure_source, "procedure-source", 1, 0, 0, scm_procedure_source);
+
+SCM
+scm_procedure_source (proc)
+ SCM proc;
+{
+ SCM_ASSERT(SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_source);
+ switch (SCM_TYP7 (proc)) {
+ case scm_tcs_closures:
+ {
+ SCM src;
+ src = scm_source_property (SCM_CDR (SCM_CODE (proc)), scm_i_copy);
+ if (src != SCM_BOOL_F)
+ return scm_cons2 (scm_i_lambda, SCM_CAR (SCM_CODE (proc)), src);
+ src = SCM_CODE (proc);
+ return scm_cons (scm_i_lambda,
+ scm_unmemocopy (src,
+ SCM_EXTEND_ENV (SCM_CAR (src),
+ SCM_EOL,
+ SCM_ENV (proc))));
+ }
+ case scm_tc7_contin:
+ case scm_tcs_subrs:
+#ifdef CCLO
+ case scm_tc7_cclo:
+#endif
+ /* It would indeed be a nice thing if we supplied source even for
+ built in procedures! */
+ return scm_procedure_property (proc, scm_i_source);
+ default:
+ scm_wta (proc, (char *) SCM_ARG1, s_procedure_source);
+ return 0;
+ }
+}
+
+SCM_PROC (s_procedure_environment, "procedure-environment", 1, 0, 0, scm_procedure_environment);
+
+SCM
+scm_procedure_environment (proc)
+ SCM proc;
+{
+ SCM_ASSERT (SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_environment);
+ switch (SCM_TYP7 (proc)) {
+ case scm_tcs_closures:
+ return SCM_ENV (proc);
+ case scm_tc7_contin:
+ case scm_tcs_subrs:
+#ifdef CCLO
+ case scm_tc7_cclo:
+#endif
+ return SCM_EOL;
+ default:
+ scm_wta (proc, (char *) SCM_ARG1, s_procedure_environment);
+ return 0;
+ }
+}
+
+\f
+
+/* Eval in a local environment. We would like to have the ability to
+ * evaluate in a specified local environment, but due to the
+ * memoization this isn't normally possible. We solve it by copying
+ * the code before evaluating. One solution would be to have eval.c
+ * generate yet another evaluator. They are not very big actually.
+ */
+SCM_PROC (s_local_eval, "local-eval", 1, 1, 0, scm_local_eval);
+
+SCM
+scm_local_eval (exp, env)
+ SCM exp;
+ SCM env;
+{
+ if (SCM_UNBNDP (env))
+ {
+ SCM_ASSERT (SCM_NIMP (exp) && SCM_MEMOIZEDP (exp), exp, SCM_ARG1, s_local_eval);
+ return scm_eval_3 (SCM_MEMOIZED_EXP (exp), 0, SCM_MEMOIZED_ENV (exp));
+ }
+ return scm_eval_3 (exp, 1, env);
+}
+
+static char s_start_stack[] = "start-stack";
+SCM
+scm_m_start_stack (exp, env)
+ SCM exp;
+ SCM env;
+{
+ SCM answer;
+ scm_debug_frame vframe;
+ scm_debug_info vframe_vect_body;
+ exp = SCM_CDR (exp);
+ SCM_ASSERT (SCM_NIMP (exp)
+ && SCM_ECONSP (exp)
+ && SCM_NIMP (SCM_CDR (exp))
+ && SCM_ECONSP (SCM_CDR (exp))
+ && SCM_NULLP (SCM_CDDR (exp)),
+ exp,
+ SCM_WNA,
+ s_start_stack);
+ vframe.prev = scm_last_debug_frame;
+ vframe.status = SCM_VOIDFRAME;
+ vframe.vect = &vframe_vect_body;
+ vframe.vect[0].id = scm_eval_car (exp, env);
+ scm_last_debug_frame = &vframe;
+ answer = scm_eval_car (SCM_CDR (exp), env);
+ scm_last_debug_frame = vframe.prev;
+ return answer;
+}
+
+/* {Debug Objects}
+ *
+ * The debugging evaluator throws these on frame traps.
+ */
+
+long scm_tc16_debugobj;
+
+static int prindebugobj SCM_P ((SCM obj, SCM port, scm_print_state *pstate));
+
+static int
+prindebugobj (obj, port, pstate)
+ SCM obj;
+ SCM port;
+ scm_print_state *pstate;
+{
+ scm_gen_puts (scm_regular_string, "#<debug-object ", port);
+ scm_intprint (SCM_DEBUGOBJ_FRAME (obj), 16, port);
+ scm_gen_putc ('>', port);
+ return 1;
+}
+
+static scm_smobfuns debugobjsmob =
+{scm_mark0, scm_free0, prindebugobj, 0};
+
+SCM_PROC (s_debug_object_p, "debug-object?", 1, 0, 0, scm_debug_object_p);
+
+SCM
+scm_debug_object_p (obj)
+ SCM obj;
+{
+ return SCM_NIMP (obj) && SCM_DEBUGOBJP (obj) ? SCM_BOOL_T : SCM_BOOL_F;
+}
+
+
+SCM
+scm_make_debugobj (frame)
+ scm_debug_frame *frame;
+{
+ register SCM z;
+ SCM_DEFER_INTS;
+ SCM_NEWCELL (z);
+ SCM_SETCAR (z, scm_tc16_debugobj);
+ SCM_SET_DEBUGOBJ_FRAME (z, (SCM) frame);
+ SCM_ALLOW_INTS;
+ return z;
+}
+
+\f
+
+/* Undocumented debugging procedure */
+#ifdef GUILE_DEBUG
+SCM_PROC (s_debug_hang, "debug-hang", 0, 1, 0, scm_debug_hang);
+
+SCM
+scm_debug_hang (obj)
+ SCM obj;
+{
+ int go = 0;
+ while (!go) ;
+ return SCM_UNSPECIFIED;
+}
+#endif
+
+\f
+
+void
+scm_init_debug ()
+{
+ scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS);
+ scm_init_opts (scm_evaluator_traps,
+ scm_evaluator_trap_table,
+ SCM_N_EVALUATOR_TRAPS);
+
+ scm_tc16_memoized = scm_newsmob (&memoizedsmob);
+ scm_tc16_debugobj = scm_newsmob (&debugobjsmob);
+
+ scm_i_procname = SCM_CAR (scm_sysintern ("procname", SCM_UNDEFINED));
+ scm_i_more = SCM_CAR (scm_sysintern ("...", SCM_UNDEFINED));
+ scm_i_source = SCM_CAR (scm_sysintern ("source", SCM_UNDEFINED));
+ scm_i_proc = SCM_CAR (scm_sysintern ("proc", SCM_UNDEFINED));
+ scm_i_args = SCM_CAR (scm_sysintern ("args", SCM_UNDEFINED));
+ scm_i_eval_args = SCM_CAR (scm_sysintern ("eval-args", SCM_UNDEFINED));
+
+ scm_make_synt (s_start_stack, scm_makacro, scm_m_start_stack);
+
+ scm_add_feature ("debug-extensions");
+
+#include "debug.x"
+}
HCoop / bpt / guile.git / blobdiff