Move Scheme introduction (Guile-independent) to its own chapter

[bpt/guile.git] / libguile / keywords.c

diff --git a/libguile/keywords.c b/libguile/keywords.c
index f6b5703..0740801 100644 (file)
--- a/libguile/keywords.c
+++ b/libguile/keywords.c
@@ -1,26 +1,31 @@
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2006, 2008, 2009 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.
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 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
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * 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"
@@ -32,6 +37,8 @@
 
 \f
 
+static SCM keyword_obarray;
+
 scm_t_bits scm_tc16_keyword;
 
 #define KEYWORDP(X)    (SCM_SMOB_PREDICATE (scm_tc16_keyword, (X)))
@@ -65,11 +72,12 @@ SCM_DEFINE (scm_symbol_to_keyword, "symbol->keyword", 1, 0, 0,
   SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, 0, NULL, "symbol");
 
   SCM_CRITICAL_SECTION_START;
-  keyword = scm_hashq_ref (scm_keyword_obarray, symbol, SCM_BOOL_F);
+  /* njrev: NEWSMOB and hashq_set_x can raise errors */
+  keyword = scm_hashq_ref (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_hashq_set_x (keyword_obarray, symbol, keyword);
     }
   SCM_CRITICAL_SECTION_END;
   return keyword;
@@ -104,15 +112,14 @@ 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);
+  keyword_obarray = scm_c_make_hash_table (0);
 #include "libguile/keywords.x"
 }