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- /* classes: h_files */
-
- #ifndef DEBUGH
- #define DEBUGH
- /* Copyright (C) 1995,1996,1998 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 "libguile/__scm.h"
-
- #include "libguile/options.h"
-
-
- /*
- * Here comes some definitions for the debugging machinery.
- * It might seem strange to represent debug flags as ints,
- * but consider that any particular piece of code is normally
- * only interested in one flag at a time. This is then
- * the most efficient representation.
- */
-
- /* {Options}
- */
-
- /* scm_debug_opts is defined in eval.c.
- */
-
- extern scm_option scm_debug_opts[];
-
- #define SCM_CHEAPTRAPS_P scm_debug_opts[0].val
- #define SCM_BREAKPOINTS_P scm_debug_opts[1].val
- #define SCM_TRACE_P scm_debug_opts[2].val
- #define SCM_REC_PROCNAMES_P scm_debug_opts[3].val
- #define SCM_BACKWARDS_P scm_debug_opts[4].val
- #define SCM_BACKTRACE_INDENT scm_debug_opts[5].val
- #define SCM_N_FRAMES scm_debug_opts[6].val
- #define SCM_BACKTRACE_MAXDEPTH scm_debug_opts[7].val
- #define SCM_BACKTRACE_DEPTH scm_debug_opts[8].val
- #define SCM_BACKTRACE_P scm_debug_opts[9].val
- #define SCM_DEVAL_P scm_debug_opts[10].val
- #define SCM_STACK_LIMIT scm_debug_opts[11].val
- #define SCM_N_DEBUG_OPTIONS 12
-
- extern SCM (*scm_ceval_ptr) SCM_P ((SCM exp, SCM env));
-
- extern int scm_debug_mode;
- extern int scm_check_entry_p, scm_check_apply_p, scm_check_exit_p;
-
- #define CHECK_ENTRY scm_check_entry_p
- #define CHECK_APPLY scm_check_apply_p
- #define CHECK_EXIT scm_check_exit_p
-
- #define SCM_RESET_DEBUG_MODE \
- {\
- CHECK_ENTRY = SCM_ENTER_FRAME_P || SCM_BREAKPOINTS_P;\
- CHECK_APPLY = SCM_APPLY_FRAME_P || SCM_TRACE_P;\
- CHECK_EXIT = SCM_EXIT_FRAME_P || SCM_TRACE_P;\
- scm_debug_mode = SCM_DEVAL_P || CHECK_ENTRY || CHECK_APPLY || CHECK_EXIT;\
- scm_ceval_ptr = scm_debug_mode ? scm_deval : scm_ceval;\
- }
-
-
- /* {Evaluator}
- */
-
- typedef union scm_debug_info
- {
- struct { SCM exp, env; } e;
- struct { SCM proc, args; } a;
- SCM id;
- } scm_debug_info;
-
- extern int scm_debug_eframe_size;
-
- typedef struct scm_debug_frame
- {
- struct scm_debug_frame *prev;
- long status;
- scm_debug_info *vect;
- scm_debug_info *info;
- } scm_debug_frame;
-
- #ifndef USE_THREADS
- extern scm_debug_frame *scm_last_debug_frame;
- #endif
-
- #define SCM_EVALFRAME (0L << 10)
- #define SCM_APPLYFRAME (1L << 10)
- #define SCM_VOIDFRAME (2L << 10)
- #define SCM_TAILREC (1L << 9)
- #define SCM_TRACED_FRAME (1L << 8)
- #define SCM_ARGS_READY (1L << 7)
- #define SCM_DOVERFLOW (1L << 6)
- #define SCM_MAX_FRAME_SIZE 63 /* also used as a mask for the size field */
-
- #define SCM_FRAMETYPE (3L << 10)
-
- #define SCM_EVALFRAMEP(x) (((x).status & SCM_FRAMETYPE) == SCM_EVALFRAME)
- #define SCM_APPLYFRAMEP(x) (((x).status & SCM_FRAMETYPE) == SCM_APPLYFRAME)
- #define SCM_VOIDFRAMEP(x) (((x).status & SCM_FRAMETYPE) == SCM_VOIDFRAME)
- #define SCM_OVERFLOWP(x) (((x).status & SCM_DOVERFLOW) != 0)
- #define SCM_ARGS_READY_P(x) (((x).status & SCM_ARGS_READY) != 0)
- #define SCM_TRACED_FRAME_P(x) (((x).status & SCM_TRACED_FRAME) != 0)
- #define SCM_TAILRECP(x) (((x).status & SCM_TAILREC) != 0)
- #define SCM_SET_OVERFLOW(x) ((x).status |= SCM_DOVERFLOW)
- #define SCM_SET_ARGSREADY(x) ((x).status |= SCM_ARGS_READY)
- #define SCM_CLEAR_ARGSREADY(x) ((x).status &= ~SCM_ARGS_READY)
- #define SCM_SET_TRACED_FRAME(x) ((x).status |= SCM_TRACED_FRAME)
- #define SCM_CLEAR_TRACED_FRAME(x) ((x).status &= ~SCM_TRACED_FRAME)
- #define SCM_SET_TAILREC(x) ((x).status |= SCM_TAILREC)
-
- #define SCM_DEBUGGINGP scm_debug_mode
- #define SCM_DSIDEVAL(x, env) if NIMP(x) scm_deval((x), (env))
-
- /* {Debug Objects}
- */
-
- extern long scm_tc16_debugobj;
-
- #define SCM_DEBUGOBJP(x) (scm_tc16_debugobj == SCM_TYP16 (x))
- #define SCM_DEBUGOBJ_FRAME(x) SCM_CDR (x)
- #define SCM_SET_DEBUGOBJ_FRAME(x, f) SCM_SETCDR (x, f)
-
- /* {Memoized Source}
- */
-
- extern long scm_tc16_memoized;
-
- #define SCM_MEMOIZEDP(x) (scm_tc16_memoized == SCM_TYP16 (x))
- #define SCM_MEMOIZED_EXP(x) SCM_CAR (SCM_CDR (x))
- #define SCM_MEMOIZED_ENV(x) SCM_CDR (SCM_CDR (x))
-
-
-
- extern SCM * scm_lookup_cstr SCM_P ((char *str, int len, SCM env));
- extern SCM * scm_lookup_soft SCM_P ((SCM var, SCM genv));
- extern SCM scm_evstr SCM_P ((char *str));
- extern SCM scm_eval_string SCM_P ((SCM str));
- extern int scm_ready_p SCM_P ((void));
- extern void debug_print SCM_P ((SCM obj));
- extern SCM scm_debug_object_p SCM_P ((SCM obj));
- extern SCM scm_local_eval SCM_P ((SCM exp, SCM env));
- extern SCM scm_start_stack SCM_P ((SCM id, SCM exp, SCM env));
- extern SCM scm_procedure_environment SCM_P ((SCM proc));
- extern SCM scm_procedure_source SCM_P ((SCM proc));
- extern SCM scm_procedure_name SCM_P ((SCM proc));
- extern SCM scm_memoized_environment SCM_P ((SCM m));
- extern SCM scm_make_memoized SCM_P ((SCM exp, SCM env));
- extern SCM scm_memoized_p SCM_P ((SCM obj));
- extern SCM scm_with_traps SCM_P ((SCM thunk));
- extern SCM scm_evaluator_traps SCM_P ((SCM setting));
- extern SCM scm_debug_options SCM_P ((SCM setting));
- extern SCM scm_unmemoize SCM_P ((SCM memoized));
- extern SCM scm_make_debugobj SCM_P ((scm_debug_frame* debug));
- extern void scm_init_debug SCM_P ((void));
-
- #ifdef GUILE_DEBUG
- extern SCM scm_make_gloc SCM_P ((SCM var, SCM env));
- extern SCM scm_gloc_p SCM_P ((SCM obj));
- extern SCM scm_make_iloc SCM_P ((SCM frame, SCM binding, SCM cdrp));
- extern SCM scm_iloc_p SCM_P ((SCM obj));
- extern SCM scm_memcons SCM_P ((SCM car, SCM cdr, SCM env));
- extern SCM scm_mem_to_proc SCM_P ((SCM obj));
- extern SCM scm_proc_to_mem SCM_P ((SCM obj));
- extern SCM scm_debug_hang SCM_P ((SCM obj));
- #endif /*GUILE_DEBUG*/
-
- #endif /* DEBUGH */
-