mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
427 lines
11 KiB
C
427 lines
11 KiB
C
/* Debugging extensions for Guile
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* Copyright (C) 1995, 1996 Free Software Foundation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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* The author can be reached at djurfeldt@nada.kth.se
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* Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */
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#include <stdio.h>
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#include "_scm.h"
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#include "eval.h"
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#include "throw.h"
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#include "genio.h"
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#include "smob.h"
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#include "procprop.h"
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#include "srcprop.h"
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#include "alist.h"
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#include "continuations.h"
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#include "strports.h"
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#include "read.h"
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#include "feature.h"
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#include "debug.h"
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/* {Run time control of the debugging evaluator}
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*/
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SCM_PROC (s_debug_options, "debug-options-interface", 0, 1, 0, scm_debug_options);
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SCM
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scm_debug_options (setting)
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SCM setting;
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{
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SCM ans;
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SCM_DEFER_INTS;
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ans = scm_options (setting,
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scm_debug_opts,
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SCM_N_DEBUG_OPTIONS,
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s_debug_options);
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#ifndef SCM_RECKLESS
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if (!(1 <= SCM_N_FRAMES && SCM_N_FRAMES <= SCM_MAX_FRAME_SIZE))
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{
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scm_options (ans, scm_debug_opts, SCM_N_DEBUG_OPTIONS, s_debug_options);
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scm_out_of_range (s_debug_options, setting);
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}
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#endif
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SCM_RESET_DEBUG_MODE;
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scm_debug_eframe_size = 2 * SCM_N_FRAMES;
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SCM_ALLOW_INTS
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return ans;
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}
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SCM_PROC (s_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, scm_evaluator_traps);
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SCM
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scm_evaluator_traps (setting)
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SCM setting;
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{
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SCM ans;
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SCM_DEFER_INTS;
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ans = scm_options (setting,
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scm_evaluator_trap_table,
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SCM_N_EVALUATOR_TRAPS,
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s_evaluator_traps);
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SCM_RESET_DEBUG_MODE;
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SCM_ALLOW_INTS
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return ans;
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}
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SCM_PROC (s_single_step, "single-step", 2, 0, 0, scm_single_step);
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SCM
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scm_single_step (cont, val)
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SCM cont;
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SCM val;
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{
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SCM_DEFER_INTS;
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SCM_ENTER_FRAME_P = SCM_EXIT_FRAME_P = 1;
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SCM_RESET_DEBUG_MODE;
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SCM_ALLOW_INTS;
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scm_call_continuation (cont, val);
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return SCM_BOOL_F; /* never returns */
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}
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static SCM scm_i_source, scm_i_more;
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static SCM scm_i_proc, scm_i_args, scm_i_eval_args;
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static SCM scm_i_procname;
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/* {Memoized Source}
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*/
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long scm_tc16_memoized;
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static int prinmemoized SCM_P ((SCM obj, SCM port, scm_print_state *pstate));
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static int
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prinmemoized (obj, port, pstate)
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SCM obj;
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SCM port;
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scm_print_state *pstate;
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{
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int writingp = SCM_WRITINGP (pstate);
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scm_gen_puts (scm_regular_string, "#<memoized ", port);
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SCM_SET_WRITINGP (pstate, 1);
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scm_iprin1 (scm_unmemoize (obj), port, pstate);
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SCM_SET_WRITINGP (pstate, writingp);
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scm_gen_putc ('>', port);
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return 1;
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}
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static scm_smobfuns memoizedsmob =
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{scm_markcdr, scm_free0, prinmemoized, 0};
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SCM_PROC (s_memoized_p, "memoized?", 1, 0, 0, scm_memoized_p);
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SCM
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scm_memoized_p (obj)
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SCM obj;
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{
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return SCM_NIMP (obj) && SCM_MEMOIZEDP (obj) ? SCM_BOOL_T : SCM_BOOL_F;
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}
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SCM
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scm_make_memoized (exp, env)
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SCM exp;
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SCM env;
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{
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/* *fixme* Check that env is a valid environment. */
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register SCM z, ans;
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SCM_DEFER_INTS;
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SCM_NEWCELL (z);
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SCM_SETCAR (z, exp);
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SCM_SETCDR (z, env);
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SCM_NEWCELL (ans);
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SCM_SETCAR (ans, scm_tc16_memoized);
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SCM_SETCDR (ans, z);
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SCM_ALLOW_INTS;
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return ans;
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}
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SCM_PROC (s_unmemoize, "unmemoize", 1, 0, 0, scm_unmemoize);
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SCM
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scm_unmemoize (m)
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SCM m;
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{
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SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize);
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return scm_unmemocopy (SCM_MEMOIZED_EXP (m), SCM_MEMOIZED_ENV (m));
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}
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SCM_PROC (s_memoized_environment, "memoized-environment", 1, 0, 0, scm_memoized_environment);
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SCM
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scm_memoized_environment (m)
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SCM m;
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{
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SCM_ASSERT (SCM_NIMP (m) && SCM_MEMOIZEDP (m), m, SCM_ARG1, s_unmemoize);
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return SCM_MEMOIZED_ENV (m);
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}
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SCM_PROC (s_procedure_name, "procedure-name", 1, 0, 0, scm_procedure_name);
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SCM
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scm_procedure_name (proc)
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SCM proc;
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{
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SCM_ASSERT(scm_procedure_p (proc) == SCM_BOOL_T,
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proc,
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SCM_ARG1,
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s_procedure_name);
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switch (SCM_TYP7 (proc)) {
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case scm_tcs_closures:
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case scm_tc7_cclo:
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{
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SCM name = scm_procedure_property (proc, scm_i_name);
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#if 0
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/* Procedure property scm_i_procname not implemented yet... */
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SCM name = scm_source_property (SCM_CAR (SCM_CDR (SCM_CODE (proc))), scm_i_procname);
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if (SCM_FALSEP (name))
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name = scm_procedure_property (proc, scm_i_name);
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#endif
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return name;
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}
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case scm_tcs_subrs:
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return SCM_SNAME (proc);
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default:
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return SCM_BOOL_F;
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}
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}
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SCM_PROC (s_procedure_source, "procedure-source", 1, 0, 0, scm_procedure_source);
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SCM
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scm_procedure_source (proc)
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SCM proc;
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{
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SCM_ASSERT(SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_source);
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switch (SCM_TYP7 (proc)) {
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case scm_tcs_closures:
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{
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SCM src;
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src = scm_source_property (SCM_CDR (SCM_CODE (proc)), scm_i_copy);
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if (src != SCM_BOOL_F)
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return scm_cons2 (scm_i_lambda, SCM_CAR (SCM_CODE (proc)), src);
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src = SCM_CODE (proc);
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return scm_cons (scm_i_lambda,
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scm_unmemocopy (src,
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SCM_EXTEND_ENV (SCM_CAR (src),
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SCM_EOL,
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SCM_ENV (proc))));
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}
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case scm_tc7_contin:
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case scm_tcs_subrs:
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#ifdef CCLO
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case scm_tc7_cclo:
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#endif
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/* It would indeed be a nice thing if we supplied source even for
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built in procedures! */
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return scm_procedure_property (proc, scm_i_source);
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default:
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scm_wta (proc, (char *) SCM_ARG1, s_procedure_source);
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return 0;
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}
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}
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SCM_PROC (s_procedure_environment, "procedure-environment", 1, 0, 0, scm_procedure_environment);
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SCM
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scm_procedure_environment (proc)
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SCM proc;
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{
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SCM_ASSERT (SCM_NIMP (proc), proc, SCM_ARG1, s_procedure_environment);
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switch (SCM_TYP7 (proc)) {
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case scm_tcs_closures:
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return SCM_ENV (proc);
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case scm_tc7_contin:
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case scm_tcs_subrs:
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#ifdef CCLO
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case scm_tc7_cclo:
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#endif
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return SCM_EOL;
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default:
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scm_wta (proc, (char *) SCM_ARG1, s_procedure_environment);
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return 0;
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}
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}
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/* Eval in a local environment. We would like to have the ability to
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* evaluate in a specified local environment, but due to the
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* memoization this isn't normally possible. We solve it by copying
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* the code before evaluating. One solution would be to have eval.c
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* generate yet another evaluator. They are not very big actually.
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*/
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SCM_PROC (s_local_eval, "local-eval", 1, 1, 0, scm_local_eval);
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SCM
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scm_local_eval (exp, env)
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SCM exp;
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SCM env;
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{
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if (SCM_UNBNDP (env))
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{
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SCM_ASSERT (SCM_NIMP (exp) && SCM_MEMOIZEDP (exp), exp, SCM_ARG1, s_local_eval);
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return scm_eval_3 (SCM_MEMOIZED_EXP (exp), 0, SCM_MEMOIZED_ENV (exp));
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}
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return scm_eval_3 (exp, 1, env);
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}
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static char s_start_stack[] = "start-stack";
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SCM
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scm_m_start_stack (exp, env)
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SCM exp;
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SCM env;
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{
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SCM answer;
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scm_debug_frame vframe;
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scm_debug_info vframe_vect_body;
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exp = SCM_CDR (exp);
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SCM_ASSERT (SCM_NIMP (exp)
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&& SCM_ECONSP (exp)
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&& SCM_NIMP (SCM_CDR (exp))
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&& SCM_ECONSP (SCM_CDR (exp))
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&& SCM_NULLP (SCM_CDDR (exp)),
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exp,
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SCM_WNA,
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s_start_stack);
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vframe.prev = scm_last_debug_frame;
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vframe.status = SCM_VOIDFRAME;
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vframe.vect = &vframe_vect_body;
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vframe.vect[0].id = scm_eval_car (exp, env);
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scm_last_debug_frame = &vframe;
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answer = scm_eval_car (SCM_CDR (exp), env);
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scm_last_debug_frame = vframe.prev;
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return answer;
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}
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/* {Debug Objects}
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*
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* The debugging evaluator throws these on frame traps.
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*/
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long scm_tc16_debugobj;
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static int prindebugobj SCM_P ((SCM obj, SCM port, scm_print_state *pstate));
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static int
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prindebugobj (obj, port, pstate)
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SCM obj;
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SCM port;
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scm_print_state *pstate;
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{
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scm_gen_puts (scm_regular_string, "#<debug-object ", port);
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scm_intprint (SCM_DEBUGOBJ_FRAME (obj), 16, port);
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scm_gen_putc ('>', port);
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return 1;
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}
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static scm_smobfuns debugobjsmob =
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{scm_mark0, scm_free0, prindebugobj, 0};
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SCM_PROC (s_debug_object_p, "debug-object?", 1, 0, 0, scm_debug_object_p);
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SCM
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scm_debug_object_p (obj)
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SCM obj;
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{
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return SCM_NIMP (obj) && SCM_DEBUGOBJP (obj) ? SCM_BOOL_T : SCM_BOOL_F;
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}
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SCM
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scm_make_debugobj (frame)
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scm_debug_frame *frame;
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{
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register SCM z;
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SCM_DEFER_INTS;
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SCM_NEWCELL (z);
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SCM_SETCAR (z, scm_tc16_debugobj);
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SCM_SET_DEBUGOBJ_FRAME (z, (SCM) frame);
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SCM_ALLOW_INTS;
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return z;
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}
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/* Undocumented debugging procedure */
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#ifdef GUILE_DEBUG
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SCM_PROC (s_debug_hang, "debug-hang", 0, 1, 0, scm_debug_hang);
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SCM
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scm_debug_hang (obj)
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SCM obj;
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{
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int go = 0;
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while (!go) ;
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return SCM_UNSPECIFIED;
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}
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#endif
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void
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scm_init_debug ()
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{
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scm_init_opts (scm_debug_options, scm_debug_opts, SCM_N_DEBUG_OPTIONS);
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scm_init_opts (scm_evaluator_traps,
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scm_evaluator_trap_table,
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SCM_N_EVALUATOR_TRAPS);
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scm_tc16_memoized = scm_newsmob (&memoizedsmob);
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scm_tc16_debugobj = scm_newsmob (&debugobjsmob);
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scm_i_procname = SCM_CAR (scm_sysintern ("procname", SCM_UNDEFINED));
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scm_i_more = SCM_CAR (scm_sysintern ("...", SCM_UNDEFINED));
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scm_i_source = SCM_CAR (scm_sysintern ("source", SCM_UNDEFINED));
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scm_i_proc = SCM_CAR (scm_sysintern ("proc", SCM_UNDEFINED));
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scm_i_args = SCM_CAR (scm_sysintern ("args", SCM_UNDEFINED));
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scm_i_eval_args = SCM_CAR (scm_sysintern ("eval-args", SCM_UNDEFINED));
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scm_make_synt (s_start_stack, scm_makacro, scm_m_start_stack);
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scm_add_feature ("debug-extensions");
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#include "debug.x"
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}
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