--- /dev/null
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2006, 2008 Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+\f
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <string.h>
+
+#include "libguile/_scm.h"
+#include "libguile/async.h"
+#include "libguile/ports.h"
+#include "libguile/root.h"
+#include "libguile/smob.h"
+#include "libguile/hashtab.h"
+
+#include "libguile/validate.h"
+#include "libguile/keywords.h"
+#include "libguile/strings.h"
+
+\f
+
+scm_t_bits scm_tc16_keyword;
+
+#define KEYWORDP(X) (SCM_SMOB_PREDICATE (scm_tc16_keyword, (X)))
+#define KEYWORDSYM(X) (SCM_SMOB_OBJECT (X))
+
+static int
+keyword_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
+{
+ scm_puts ("#:", port);
+ scm_display (KEYWORDSYM (exp), port);
+ return 1;
+}
+
+SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0,
+ (SCM obj),
+ "Return @code{#t} if the argument @var{obj} is a keyword, else\n"
+ "@code{#f}.")
+#define FUNC_NAME s_scm_keyword_p
+{
+ return scm_from_bool (KEYWORDP (obj));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_symbol_to_keyword, "symbol->keyword", 1, 0, 0,
+ (SCM symbol),
+ "Return the keyword with the same name as @var{symbol}.")
+#define FUNC_NAME s_scm_symbol_to_keyword
+{
+ SCM keyword;
+
+ SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, 0, NULL, "symbol");
+
+ SCM_CRITICAL_SECTION_START;
+ /* njrev: NEWSMOB and hashq_set_x can raise errors */
+ keyword = scm_hashq_ref (scm_keyword_obarray, symbol, SCM_BOOL_F);
+ if (scm_is_false (keyword))
+ {
+ SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol));
+ scm_hashq_set_x (scm_keyword_obarray, symbol, keyword);
+ }
+ SCM_CRITICAL_SECTION_END;
+ return keyword;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_keyword_to_symbol, "keyword->symbol", 1, 0, 0,
+ (SCM keyword),
+ "Return the symbol with the same name as @var{keyword}.")
+#define FUNC_NAME s_scm_keyword_to_symbol
+{
+ scm_assert_smob_type (scm_tc16_keyword, keyword);
+ return KEYWORDSYM (keyword);
+}
+#undef FUNC_NAME
+
+int
+scm_is_keyword (SCM val)
+{
+ return KEYWORDP (val);
+}
+
+SCM
+scm_from_locale_keyword (const char *str)
+{
+ return scm_symbol_to_keyword (scm_from_locale_symbol (str));
+}
+
+SCM
+scm_from_locale_keywordn (const char *str, size_t len)
+{
+ return scm_symbol_to_keyword (scm_from_locale_symboln (str, len));
+}
+
+/* njrev: critical sections reviewed so far up to here */
+void
+scm_init_keywords ()
+{
+ scm_tc16_keyword = scm_make_smob_type ("keyword", 0);
+ scm_set_smob_mark (scm_tc16_keyword, scm_markcdr);
+ scm_set_smob_print (scm_tc16_keyword, keyword_print);
+
+ scm_keyword_obarray = scm_c_make_hash_table (0);
+#include "libguile/keywords.x"
+}
+
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/