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/* classes: h_files */
#ifndef SCM_STACKS_H
#define SCM_STACKS_H
/* Copyright (C) 1995-1996,2000-2001,2004,2006,2008,2018
* 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 3 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/error.h>
#include "libguile/frames.h"
/* {Frames and stacks}
*/
SCM_API SCM scm_stack_type;
#define SCM_STACK_LAYOUT \
"pw" /* len */ \
"pw" /* id */ \
"pw" /* frame */
#define SCM_STACKP(obj) (SCM_STRUCTP (obj) && scm_is_eq (SCM_STRUCT_VTABLE (obj), scm_stack_type))
#define SCM_STACK_LENGTH(obj) (scm_to_long (SCM_STRUCT_SLOT_REF (obj,0)))
#define SCM_SET_STACK_LENGTH(obj,f) (SCM_STRUCT_SLOT_SET (obj,0,scm_from_long (f)))
#define SCM_STACK_ID(obj) (SCM_STRUCT_SLOT_REF (obj,1))
#define SCM_SET_STACK_ID(obj,f) (SCM_STRUCT_SLOT_SET (obj,1,f))
#define SCM_STACK_FRAME(obj) (SCM_STRUCT_SLOT_REF (obj,2))
#define SCM_SET_STACK_FRAME(obj,f) (SCM_STRUCT_SLOT_SET (obj,2,f))
#define SCM_FRAMEP(obj) (SCM_VM_FRAME_P (obj))
#define SCM_VALIDATE_STACK(pos, v) \
SCM_MAKE_VALIDATE_MSG (pos, v, STACKP, "stack")
#define SCM_VALIDATE_FRAME(pos, v) \
SCM_MAKE_VALIDATE_MSG (pos, v, FRAMEP, "frame")
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_INTERNAL void scm_init_stacks (void);
#endif /* SCM_STACKS_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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