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/* Debugging extensions for Guile
* Copyright (C) 1995, 1996, 1997 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"
/* {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 */
}
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_puts ("#<memoized ", port);
SCM_SET_WRITINGP (pstate, 1);
scm_iprin1 (scm_unmemoize (obj), port, pstate);
SCM_SET_WRITINGP (pstate, writingp);
scm_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
/* Source 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
if (SCM_FALSEP (name))
name = scm_procedure_property (proc, scm_i_inner_name);
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;
}
}
/* 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_puts ("#<debug-object ", port);
scm_intprint (SCM_DEBUGOBJ_FRAME (obj), 16, port);
scm_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;
}
/* 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
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"
}
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