mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/* classes: h_files */
|
||
|
||
#ifndef SCM_STACKS_H
|
||
#define SCM_STACKS_H
|
||
|
||
/* Copyright (C) 1995,1996,2000,2001, 2004, 2006, 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"
|
||
|
||
/* {Frames and stacks}
|
||
*/
|
||
|
||
typedef struct scm_t_info_frame {
|
||
/* SCM flags; */
|
||
scm_t_bits flags;
|
||
SCM source;
|
||
SCM proc;
|
||
SCM args;
|
||
} scm_t_info_frame;
|
||
#define SCM_FRAME_N_SLOTS (sizeof (scm_t_info_frame) / sizeof (SCM))
|
||
|
||
#define SCM_STACK(obj) ((scm_t_stack *) SCM_STRUCT_DATA (obj))
|
||
#define SCM_STACK_LAYOUT "pwuourpW"
|
||
typedef struct scm_t_stack {
|
||
SCM id; /* Stack id */
|
||
scm_t_info_frame *frames; /* Info frames */
|
||
unsigned long length; /* Stack length */
|
||
unsigned long tail_length;
|
||
scm_t_info_frame tail[1];
|
||
} scm_t_stack;
|
||
|
||
SCM_API SCM scm_stack_type;
|
||
|
||
#define SCM_STACKP(obj) (SCM_STRUCTP (obj) && scm_is_eq (SCM_STRUCT_VTABLE (obj), scm_stack_type))
|
||
#define SCM_STACK_LENGTH(stack) (SCM_STACK (stack) -> length)
|
||
|
||
#define SCM_FRAMEP(obj) \
|
||
(scm_is_pair (obj) && SCM_STACKP (SCM_CAR (obj)) \
|
||
&& scm_is_unsigned_integer (SCM_CDR (obj), \
|
||
0, SCM_STACK_LENGTH (SCM_CAR (obj))-1))
|
||
|
||
#define SCM_FRAME_REF(frame, slot) \
|
||
(SCM_STACK (SCM_CAR (frame)) -> frames[scm_to_size_t (SCM_CDR (frame))].slot)
|
||
|
||
#define SCM_FRAME_NUMBER(frame) \
|
||
(SCM_BACKWARDS_P \
|
||
? scm_to_size_t (SCM_CDR (frame)) \
|
||
: (SCM_STACK_LENGTH (SCM_CAR (frame)) \
|
||
- scm_to_size_t (SCM_CDR (frame)) \
|
||
- 1)) \
|
||
|
||
#define SCM_FRAME_FLAGS(frame) SCM_FRAME_REF (frame, flags)
|
||
#define SCM_FRAME_SOURCE(frame) SCM_FRAME_REF (frame, source)
|
||
#define SCM_FRAME_PROC(frame) SCM_FRAME_REF (frame, proc)
|
||
#define SCM_FRAME_ARGS(frame) SCM_FRAME_REF (frame, args)
|
||
#define SCM_FRAME_PREV(frame) scm_frame_previous (frame)
|
||
#define SCM_FRAME_NEXT(frame) scm_frame_next (frame)
|
||
|
||
#define SCM_FRAMEF_VOID (1L << 2)
|
||
#define SCM_FRAMEF_REAL (1L << 3)
|
||
#define SCM_FRAMEF_PROC (1L << 4)
|
||
#define SCM_FRAMEF_EVAL_ARGS (1L << 5)
|
||
#define SCM_FRAMEF_OVERFLOW (1L << 6)
|
||
|
||
#define SCM_FRAME_VOID_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_VOID)
|
||
#define SCM_FRAME_REAL_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_REAL)
|
||
#define SCM_FRAME_PROC_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_PROC)
|
||
#define SCM_FRAME_EVAL_ARGS_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_EVAL_ARGS)
|
||
#define SCM_FRAME_OVERFLOW_P(f) (SCM_FRAME_FLAGS (f) & SCM_FRAMEF_OVERFLOW)
|
||
|
||
|
||
|
||
SCM_API SCM scm_stack_p (SCM obj);
|
||
SCM_API SCM scm_make_stack (SCM obj, SCM args);
|
||
SCM_API SCM scm_stack_id (SCM stack);
|
||
SCM_API SCM scm_stack_ref (SCM stack, SCM i);
|
||
SCM_API SCM scm_stack_length (SCM stack);
|
||
|
||
SCM_API SCM scm_frame_p (SCM obj);
|
||
SCM_API SCM scm_last_stack_frame (SCM obj);
|
||
SCM_API SCM scm_frame_number (SCM frame);
|
||
SCM_API SCM scm_frame_source (SCM frame);
|
||
SCM_API SCM scm_frame_procedure (SCM frame);
|
||
SCM_API SCM scm_frame_arguments (SCM frame);
|
||
SCM_API SCM scm_frame_previous (SCM frame);
|
||
SCM_API SCM scm_frame_next (SCM frame);
|
||
SCM_API SCM scm_frame_real_p (SCM frame);
|
||
SCM_API SCM scm_frame_procedure_p (SCM frame);
|
||
SCM_API SCM scm_frame_evaluating_args_p (SCM frame);
|
||
SCM_API SCM scm_frame_overflow_p (SCM frame);
|
||
|
||
SCM_INTERNAL void scm_init_stacks (void);
|
||
|
||
#endif /* SCM_STACKS_H */
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|