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- /* classes: h_files */
-
- #ifndef PAIRSH
- #define PAIRSH
- /* Copyright (C) 1995 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;
-
- /* PTR_LT defines how to compare two CELLPTRs (which may not be in the
- * same scm_array). 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__) */
-
-
-
- /* Cons Pairs
- */
-
- #define SCM_NCONSP(x) (1 & (int)SCM_CAR(x))
- #define SCM_CONSP(x) (!SCM_NCONSP(x))
- #define SCM_ECONSP(x) (SCM_CONSP(x) || (1==SCM_TYP3(x)))
- #define SCM_NECONSP(x) (SCM_NCONSP(x) && (1 != SCM_TYP3(x)))
-
- #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_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_listify (SCM elt, ...);
- extern SCM scm_acons (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 SCM scm_null_p(SCM x);
- extern long scm_ilength(SCM sx);
- extern SCM scm_list_p(SCM x);
- extern SCM scm_list(SCM objs);
- extern SCM scm_list_length(SCM x);
- extern int scm_obj_length (SCM obj);
- extern SCM scm_length(SCM x);
- extern SCM scm_append(SCM args);
- extern SCM scm_reverse(SCM lst);
- extern SCM scm_list_ref(SCM lst, SCM k);
- extern SCM scm_memq(SCM x, SCM lst);
- extern SCM scm_member(SCM x, SCM lst);
- extern SCM scm_assq(SCM x, SCM alist);
- extern SCM scm_assoc(SCM x, SCM alist);
- extern SCM scm_delq_x (SCM item, SCM lst);
- extern SCM scm_last_pair(SCM sx);
- extern SCM scm_append_x(SCM args);
- extern SCM scm_memv (SCM x, SCM lst);
- extern SCM scm_assv(SCM x, SCM alist);
- extern SCM scm_list_tail(SCM lst, SCM k);
- extern void scm_init_pairs (void);
-
- #else /* STDC */
- extern SCM scm_cons ();
- extern SCM scm_cons2 ();
- extern SCM scm_listify ();
- extern SCM scm_acons ();
- extern SCM scm_pair_p();
- extern SCM scm_set_car_x();
- extern SCM scm_set_cdr_x();
- extern SCM scm_null_p();
- extern long scm_ilength();
- extern SCM scm_list_p();
- extern SCM scm_list();
- extern SCM scm_list_length();
- extern int scm_obj_length ();
- extern SCM scm_length();
- extern SCM scm_append();
- extern SCM scm_reverse();
- extern SCM scm_list_ref();
- extern SCM scm_memq();
- extern SCM scm_member();
- extern SCM scm_assq();
- extern SCM scm_assoc();
- extern SCM scm_delq_x ();
- extern SCM scm_last_pair();
- extern SCM scm_append_x();
- extern SCM scm_memv ();
- extern SCM scm_assv();
- extern SCM scm_list_tail();
- extern void scm_init_pairs ();
-
- #endif /* STDC */
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- #endif /* PAIRSH */
-