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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/weaks.c
downloadguile-0f2d19dd46f83f41177f61d585732b32a866d613.tar.gz
maintainer changed: was lord, now jimb; first import
Diffstat (limited to 'libguile/weaks.c')
-rw-r--r--libguile/weaks.c242
1 files changed, 242 insertions, 0 deletions
diff --git a/libguile/weaks.c b/libguile/weaks.c
new file mode 100644
index 000000000..8479d76f5
--- /dev/null
+++ b/libguile/weaks.c
@@ -0,0 +1,242 @@
+/* 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, Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of this library.
+ *
+ * The exception is that, if you link this 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 this 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
+ * Free Software Foundation as part of this library. If you copy
+ * code from other releases distributed under the terms of the GPL into a copy of
+ * this library, 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 such code.
+ *
+ * If you write modifications of your own for this library, 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 <stdio.h>
+#include "_scm.h"
+
+
+
+
+/* {Weak Vectors}
+ */
+
+
+SCM_PROC(s_make_weak_vector, "make-weak-vector", 1, 1, 0, scm_make_weak_vector);
+#ifdef __STDC__
+SCM
+scm_make_weak_vector (SCM k, SCM fill)
+#else
+SCM
+scm_make_weak_vector (k, fill)
+ SCM k;
+ SCM fill;
+#endif
+{
+ SCM v;
+ v = scm_make_vector (scm_sum (k, SCM_MAKINUM (1)), fill, SCM_UNDEFINED);
+ SCM_DEFER_INTS;
+ SCM_SETLENGTH(v, SCM_INUM (k), scm_tc7_wvect);
+ SCM_VELTS(v)[0] = (SCM)0;
+ SCM_SETVELTS(v, SCM_VELTS(v) + 1);
+ SCM_ALLOW_INTS;
+ return v;
+}
+
+
+SCM_PROC(s_weak_vector, "weak-vector", 0, 0, 1, scm_weak_vector);
+SCM_PROC(s_list_to_weak_vector, "list->weak-vector", 1, 0, 0, scm_weak_vector);
+#ifdef __STDC__
+SCM
+scm_weak_vector (SCM l)
+#else
+SCM
+scm_weak_vector (l)
+ SCM l;
+#endif
+{
+ SCM res;
+ register SCM *data;
+ long i;
+
+ i = scm_ilength (l);
+ SCM_ASSERT (i >= 0, l, SCM_ARG1, s_weak_vector);
+ res = scm_make_weak_vector (SCM_MAKINUM (i), SCM_UNSPECIFIED);
+ data = SCM_VELTS (res);
+ for (;
+ i && SCM_NIMP (l) && SCM_CONSP (l);
+ --i, l = SCM_CDR (l))
+ *data++ = SCM_CAR (l);
+ return res;
+}
+
+
+SCM_PROC(s_weak_vector_p, "weak-vector?", 1, 0, 0, scm_weak_vector_p);
+#ifdef __STDC__
+SCM
+scm_weak_vector_p (SCM x)
+#else
+SCM
+scm_weak_vector_p (x)
+ SCM x;
+#endif
+{
+ return ((SCM_NIMP (x) && SCM_WVECTP (x) && !SCM_IS_WHVEC (x))
+ ? SCM_BOOL_T
+ : SCM_BOOL_F);
+}
+
+
+
+
+
+
+
+SCM_PROC(s_make_weak_hash_table, "make-weak-hash-table", 1, 0, 0, scm_make_weak_hash_table);
+#ifdef __STDC__
+SCM
+scm_make_weak_hash_table (SCM k)
+#else
+SCM
+scm_make_weak_hash_table (k)
+ SCM k;
+#endif
+{
+ SCM v;
+ SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_hash_table);
+ v = scm_make_weak_vector (k, SCM_EOL);
+ SCM_ALLOW_INTS;
+ SCM_VELTS (v)[-1] = 1;
+ SCM_ALLOW_INTS;
+ return v;
+}
+
+
+SCM_PROC (s_make_weak_value_hash_table, "make-weak-value-hash-table", 1, 0, 0, scm_make_weak_value_hash_table);
+#ifdef __STDC__
+SCM
+scm_make_weak_value_hash_table (SCM k)
+#else
+SCM
+scm_make_weak_value_hash_table (k)
+ SCM k;
+#endif
+{
+ SCM v;
+ SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_value_hash_table);
+ v = scm_make_weak_vector (k, SCM_EOL);
+ SCM_ALLOW_INTS;
+ SCM_VELTS (v)[-1] = 2;
+ SCM_ALLOW_INTS;
+ return v;
+}
+
+
+
+SCM_PROC (s_make_doubly_weak_hash_table, "make-doubly-weak-hash-table", 1, 0, 0, scm_make_doubly_weak_hash_table);
+#ifdef __STDC__
+SCM
+scm_make_doubly_weak_hash_table (SCM k)
+#else
+SCM
+scm_make_doubly_weak_hash_table (k)
+ SCM k;
+#endif
+{
+ SCM v;
+ SCM_ASSERT (SCM_INUMP (k), k, SCM_ARG1, s_make_weak_value_hash_table);
+ v = scm_make_weak_vector (k, SCM_EOL);
+ SCM_ALLOW_INTS;
+ SCM_VELTS (v)[-1] = 3;
+ SCM_ALLOW_INTS;
+ return v;
+}
+
+SCM_PROC(s_weak_hash_table_p, "weak-hash-table?", 1, 0, 0, scm_weak_hash_table_p);
+#ifdef __STDC__
+SCM
+scm_weak_hash_table_p (SCM x)
+#else
+SCM
+scm_weak_hash_table_p (x)
+ SCM x;
+#endif
+{
+ return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC(x))
+ ? SCM_BOOL_T
+ : SCM_BOOL_F);
+}
+
+
+SCM_PROC (s_weak_value_hash_table_p, "weak-value-hash-table?", 1, 0, 0, scm_weak_value_hash_table_p);
+#ifdef __STDC__
+SCM
+scm_weak_value_hash_table_p (SCM x)
+#else
+SCM
+scm_weak_value_hash_table_p (x)
+ SCM x;
+#endif
+{
+ return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC_V(x))
+ ? SCM_BOOL_T
+ : SCM_BOOL_F);
+}
+
+
+SCM_PROC (s_doubly_weak_hash_table_p, "doubly-weak-hash-table?", 1, 0, 0, scm_doubly_weak_hash_table_p);
+#ifdef __STDC__
+SCM
+scm_doubly_weak_hash_table_p (SCM x)
+#else
+SCM
+scm_doubly_weak_hash_table_p (x)
+ SCM x;
+#endif
+{
+ return ((SCM_NIMP (x) && SCM_WVECTP (x) && SCM_IS_WHVEC_B (x))
+ ? SCM_BOOL_T
+ : SCM_BOOL_F);
+}
+
+
+
+
+#ifdef __STDC__
+void
+scm_init_weaks (void)
+#else
+void
+scm_init_weaks ()
+#endif
+{
+#include "weaks.x"
+}
+