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/*
Copyright (C) 1994 M. Hagiya, W. Schelter, T. Yuasa
This file is part of GNU Common Lisp, herein referred to as GCL
GCL is free software; you can redistribute it and/or modify it under
the terms of the GNU LIBRARY GENERAL PUBLIC LICENSE as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCL 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with GCL; see the file COPYING. If not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
vs.h
value stack
*/
EXTER object *vs_org;
EXTER object *vs_limit; /* value stack limit */
EXTER object *vs_base; /* value stack base */
EXTER object *vs_top; /* value stack top */
#define vs_push(obje) (*vs_top++ = (obje))
#define vs_pop (*--vs_top)
#define vs_popp (--vs_top)
#define vs_head vs_top[-1]
#define vs_mark object *old_vs_top = vs_top
#define vs_reset vs_top = old_vs_top
#define vs_check if (vs_top >= vs_limit) \
vs_overflow()
#define vs_check_push(obje) \
(vs_top >= vs_limit ? \
(object)vs_overflow() : (*vs_top++ = (obje)))
#define check_arg(n) \
if (vs_top - vs_base != (n)) \
check_arg_failed(n)
#define CHECK_ARG_RANGE(n,m) if (VFUN_NARGS < n || VFUN_NARGS >m) \
check_arg_range(n,m)
#define MMcheck_arg(n) \
if (vs_top - vs_base < (n)) \
too_few_arguments(); \
else if (vs_top - vs_base > (n)) \
too_many_arguments()
#define vs_reserve(x) if(vs_base+(x) >= vs_limit) \
vs_overflow();
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