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authorJim Blandy <jimb@red-bean.com>1996-07-25 22:56:11 +0000
committerJim Blandy <jimb@red-bean.com>1996-07-25 22:56:11 +0000
commit0f2d19dd46f83f41177f61d585732b32a866d613 (patch)
tree86bf67b8c05d36d8181d393e7d706785a74ee777 /libguile/pairs.h
downloadguile-0f2d19dd46f83f41177f61d585732b32a866d613.tar.gz
maintainer changed: was lord, now jimb; first import
Diffstat (limited to 'libguile/pairs.h')
-rw-r--r--libguile/pairs.h170
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 */