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author | Jim Blandy <jimb@red-bean.com> | 1996-07-25 22:56:11 +0000 |
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committer | Jim Blandy <jimb@red-bean.com> | 1996-07-25 22:56:11 +0000 |
commit | 0f2d19dd46f83f41177f61d585732b32a866d613 (patch) | |
tree | 86bf67b8c05d36d8181d393e7d706785a74ee777 /libguile/pairs.h | |
download | guile-0f2d19dd46f83f41177f61d585732b32a866d613.tar.gz |
maintainer changed: was lord, now jimb; first import
Diffstat (limited to 'libguile/pairs.h')
-rw-r--r-- | libguile/pairs.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/libguile/pairs.h b/libguile/pairs.h new file mode 100644 index 000000000..b27e9c908 --- /dev/null +++ b/libguile/pairs.h @@ -0,0 +1,170 @@ +/* classes: h_files */ + +#ifndef PAIRSH +#define PAIRSH +/* Copyright (C) 1995,1996 Free Software Foundation, Inc. + * + * 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, 675 Mass Ave, Cambridge, MA 02139, 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. + */ + + +#include "__scm.h" + + + +typedef struct scm_cell +{ + SCM car; + SCM cdr; +} scm_cell; + +/* SCM_PTR_LT defines how to compare two SCM_CELLPTRs (which may not be in the + * same scm_array). SCM_CELLPTR is a pointer to a cons cell which may be + * compared or differenced. SCMPTR is used for stack bounds. + */ + +#if !defined(__TURBOC__) || defined(__TOS__) + +typedef scm_cell *SCM_CELLPTR; +typedef SCM *SCMPTR; + +# ifdef nosve +# define SCM_PTR_MASK 0xffffffffffff +# define SCM_PTR_LT(x, y) (((int)(x)&SCM_PTR_MASK) < ((int)(y)&SCM_PTR_MASK)) +# else +# define SCM_PTR_LT(x, y) ((x) < (y)) +# endif /* def nosve */ + +#else /* defined(__TURBOC__) && !defined(__TOS__) */ + +# ifdef PROT386 +typedef scm_cell *SCM_CELLPTR; +typedef SCM *SCMPTR; +# define SCM_PTR_LT(x, y) (((long)(x)) < ((long)(y))) +# else +typedef scm_cell huge *SCM_CELLPTR; +typedef SCM huge *SCMPTR; +# define SCM_PTR_LT(x, y) ((x) < (y)) +# endif /* def PROT386 */ + +#endif /* defined(__TURBOC__) && !defined(__TOS__) */ + +#define SCM_PTR_GT(x, y) SCM_PTR_LT(y, x) +#define SCM_PTR_LE(x, y) (!SCM_PTR_GT(x, y)) +#define SCM_PTR_GE(x, y) (!SCM_PTR_LT(x, y)) + +#define SCM_EOL SCM_BOOL_F +#define SCM_NULLP(x) (SCM_EOL == (x)) +#define SCM_NNULLP(x) (SCM_EOL != (x)) + + + + +/* Cons Pairs + */ + +#define SCM_CAR(x) (((scm_cell *)(SCM2PTR(x)))->car) +#define SCM_CDR(x) (((scm_cell *)(SCM2PTR(x)))->cdr) +#define SCM_GCCDR(x) (~1L & SCM_CDR(x)) +#define SCM_SETCDR(x, v) SCM_CDR(x) = (SCM)(v) +#define SCM_SETCAR(x, v) SCM_CAR(x) = (SCM)(v) + +#define SCM_CAAR(OBJ) SCM_CAR (SCM_CAR (OBJ)) +#define SCM_CDAR(OBJ) SCM_CDR (SCM_CAR (OBJ)) +#define SCM_CADR(OBJ) SCM_CAR (SCM_CDR (OBJ)) +#define SCM_CDDR(OBJ) SCM_CDR (SCM_CDR (OBJ)) + +#define SCM_CAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (OBJ))) +#define SCM_CDAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (OBJ))) +#define SCM_CADAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (OBJ))) +#define SCM_CDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (OBJ))) +#define SCM_CAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (OBJ))) +#define SCM_CDADR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (OBJ))) +#define SCM_CADDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (OBJ))) +#define SCM_CDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (OBJ))) + +#define SCM_CAAAAR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ)))) +#define SCM_CDAAAR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ)))) +#define SCM_CADAAR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ)))) +#define SCM_CDDAAR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ)))) +#define SCM_CAADAR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ)))) +#define SCM_CDADAR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ)))) +#define SCM_CADDAR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ)))) +#define SCM_CDDDAR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ)))) +#define SCM_CAAADR(OBJ) SCM_CAR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ)))) +#define SCM_CDAADR(OBJ) SCM_CDR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ)))) +#define SCM_CADADR(OBJ) SCM_CAR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ)))) +#define SCM_CDDADR(OBJ) SCM_CDR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ)))) +#define SCM_CAADDR(OBJ) SCM_CAR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ)))) +#define SCM_CDADDR(OBJ) SCM_CDR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ)))) +#define SCM_CADDDR(OBJ) SCM_CAR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ)))) +#define SCM_CDDDDR(OBJ) SCM_CDR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ)))) + + +#define SCM_NEWCELL(_into) \ + { \ + if (SCM_IMP(scm_freelist)) \ + _into = scm_gc_for_newcell();\ + else \ + { \ + _into = scm_freelist; \ + scm_freelist = SCM_CDR(scm_freelist);\ + ++scm_cells_allocated; \ + } \ + } + + +#ifdef __STDC__ +extern SCM scm_cons (SCM x, SCM y); +extern SCM scm_cons2 (SCM w, SCM x, SCM y); +extern SCM scm_pair_p(SCM x); +extern SCM scm_set_car_x(SCM pair, SCM value); +extern SCM scm_set_cdr_x(SCM pair, SCM value); +extern void scm_init_pairs (void); + +#else /* STDC */ +extern SCM scm_cons (); +extern SCM scm_cons2 (); +extern SCM scm_pair_p(); +extern SCM scm_set_car_x(); +extern SCM scm_set_cdr_x(); +extern void scm_init_pairs (); + +#endif /* STDC */ +#endif /* PAIRSH */ |