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/* classes: h_files */
#ifndef SCM_DEBUG_H
#define SCM_DEBUG_H
/* Copyright (C) 1995,1996,1998,1999,2000,2001,2002,2004,2008
* Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#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.
*/
SCM_API int scm_debug_mode_p;
SCM_API int scm_check_entry_p;
SCM_API int scm_check_apply_p;
SCM_API int scm_check_exit_p;
SCM_API int scm_check_memoize_p;
#define SCM_RESET_DEBUG_MODE \
do {\
scm_check_entry_p = (SCM_ENTER_FRAME_P || SCM_BREAKPOINTS_P)\
&& scm_is_true (SCM_ENTER_FRAME_HDLR);\
scm_check_apply_p = (SCM_APPLY_FRAME_P || SCM_TRACE_P)\
&& scm_is_true (SCM_APPLY_FRAME_HDLR);\
scm_check_exit_p = (SCM_EXIT_FRAME_P || SCM_TRACE_P)\
&& scm_is_true (SCM_EXIT_FRAME_HDLR);\
scm_check_memoize_p = (SCM_MEMOIZE_P)\
&& scm_is_true (SCM_MEMOIZE_HDLR);\
scm_debug_mode_p = SCM_DEVAL_P\
|| scm_check_memoize_p || scm_check_entry_p || scm_check_apply_p || scm_check_exit_p;\
} while (0)
/* {Evaluator}
*/
typedef union scm_t_debug_info
{
struct { SCM exp, env; } e;
struct { SCM proc, args; } a;
SCM id;
} scm_t_debug_info;
SCM_API long scm_debug_eframe_size;
typedef struct scm_t_debug_frame
{
struct scm_t_debug_frame *prev;
long status;
scm_t_debug_info *vect;
scm_t_debug_info *info;
} scm_t_debug_frame;
#define SCM_EVALFRAME (0L << 11)
#define SCM_APPLYFRAME (1L << 11)
#define SCM_VOIDFRAME (3L << 11)
#define SCM_MACROEXPF (1L << 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
#define SCM_FRAMETYPE (3L << 11)
#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_MACROEXPP(x) (((x).status & SCM_MACROEXPF) != 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_SET_MACROEXP(x) ((x).status |= SCM_MACROEXPF)
#define SCM_CLEAR_MACROEXP(x) ((x).status &= ~SCM_MACROEXPF)
/* {Debug Objects}
*/
SCM_API scm_t_bits scm_tc16_debugobj;
#define SCM_DEBUGOBJP(x) \
SCM_TYP16_PREDICATE (scm_tc16_debugobj, x)
#define SCM_DEBUGOBJ_FRAME(x) \
((scm_t_debug_frame *) SCM_CELL_WORD_1 (x))
#define SCM_SET_DEBUGOBJ_FRAME(x, f) SCM_SET_CELL_WORD_1 (x, f)
/* {Memoized Source}
*/
SCM_API scm_t_bits scm_tc16_memoized;
#define SCM_MEMOIZEDP(x) SCM_TYP16_PREDICATE (scm_tc16_memoized, x)
#define SCM_MEMOIZED_EXP(x) SCM_CAR (SCM_CELL_OBJECT_1 (x))
#define SCM_MEMOIZED_ENV(x) SCM_CDR (SCM_CELL_OBJECT_1 (x))
SCM_API SCM scm_debug_object_p (SCM obj);
SCM_API SCM scm_local_eval (SCM exp, SCM env);
SCM_API SCM scm_reverse_lookup (SCM env, SCM data);
SCM_API SCM scm_start_stack (SCM info_id, SCM exp, SCM env);
SCM_API SCM scm_procedure_environment (SCM proc);
SCM_API SCM scm_procedure_source (SCM proc);
SCM_API SCM scm_procedure_name (SCM proc);
SCM_API SCM scm_memoized_environment (SCM m);
SCM_API SCM scm_make_memoized (SCM exp, SCM env);
SCM_API SCM scm_memoized_p (SCM obj);
SCM_API SCM scm_with_traps (SCM thunk);
SCM_API SCM scm_evaluator_traps (SCM setting);
SCM_API SCM scm_debug_options (SCM setting);
SCM_API SCM scm_make_debugobj (scm_t_debug_frame *debug);
SCM_INTERNAL SCM scm_i_unmemoize_expr (SCM memoized);
SCM_INTERNAL void scm_init_debug (void);
#ifdef GUILE_DEBUG
SCM_API SCM scm_memcons (SCM car, SCM cdr, SCM env);
SCM_API SCM scm_mem_to_proc (SCM obj);
SCM_API SCM scm_proc_to_mem (SCM obj);
SCM_API SCM scm_debug_hang (SCM obj);
#endif /*GUILE_DEBUG*/
#if SCM_ENABLE_DEPRECATED == 1
#define CHECK_ENTRY scm_check_entry_p
#define CHECK_APPLY scm_check_apply_p
#define CHECK_EXIT scm_check_exit_p
/* Deprecated in guile 1.7.0 on 2004-03-29. */
#define SCM_DEBUGGINGP scm_debug_mode_p
#define scm_debug_mode scm_debug_mode_p
#endif
#endif /* SCM_DEBUG_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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