-/* Copyright (C) 1995,1996,1997,1998, 1999, 2000 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, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 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. */
-
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
-
-\f
-
-#include <stdio.h>
-#include "libguile/_scm.h"
-#include "libguile/ports.h"
-#include "libguile/root.h"
-#include "libguile/smob.h"
-#include "libguile/vectors.h"
-
-#include "libguile/validate.h"
-#include "libguile/keywords.h"
-\f
-
-static int
-prin_keyword (SCM exp,SCM port,scm_print_state *pstate)
-{
- scm_puts ("#:", port);
- scm_puts(1 + SCM_CHARS (SCM_CDR (exp)), port);
- return 1;
-}
-
-int scm_tc16_keyword;
-
-
-SCM_DEFINE (scm_make_keyword_from_dash_symbol, "make-keyword-from-dash-symbol", 1, 0, 0,
- (SCM symbol),
- "Make a keyword object from a @var{symbol} that starts with a dash.")
-#define FUNC_NAME s_scm_make_keyword_from_dash_symbol
-{
- SCM vcell;
-
- SCM_ASSERT (SCM_SYMBOLP (symbol)
- && ('-' == SCM_SYMBOL_CHARS(symbol)[0]),
- symbol, SCM_ARG1, FUNC_NAME);
-
- SCM_DEFER_INTS;
- vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray);
- if (SCM_FALSEP (vcell))
- {
- SCM keyword;
- SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol));
- scm_intern_symbol (scm_keyword_obarray, symbol);
- vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray);
- SCM_SETCDR (vcell, keyword);
- }
- SCM_ALLOW_INTS;
- return SCM_CDR (vcell);
-}
-#undef FUNC_NAME
-
-SCM
-scm_c_make_keyword (char *s)
-{
- SCM vcell;
- char *buf = scm_must_malloc (strlen (s) + 2, "keyword");
- buf[0] = '-';
- strcpy (buf + 1, s);
- vcell = scm_sysintern0 (buf);
- scm_must_free (buf);
- return scm_make_keyword_from_dash_symbol (SCM_CAR (vcell));
-}
-
-SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0,
- (SCM obj),
- "Returns @code{#t} if the argument @var{obj} is a keyword, else @code{#f}.")
-#define FUNC_NAME s_scm_keyword_p
-{
- return SCM_BOOL(SCM_KEYWORDP (obj));
-}
-#undef FUNC_NAME
-
-
-SCM_DEFINE (scm_keyword_dash_symbol, "keyword-dash-symbol", 1, 0, 0,
- (SCM keyword),
- "Return the dash symbol for @var{keyword}.\n"
- "This is the inverse of @code{make-keyword-from-dash-symbol}.")
-#define FUNC_NAME s_scm_keyword_dash_symbol
-{
- SCM_VALIDATE_KEYWORD (1,keyword);
- return SCM_CDR (keyword);
-}
-#undef FUNC_NAME
-
-
-
-void
-scm_init_keywords ()
-{
- scm_tc16_keyword = scm_make_smob_type_mfpe ("keyword", 0,
- scm_markcdr, NULL, prin_keyword, NULL);
-
- scm_keyword_obarray = scm_make_vector (SCM_MAKINUM (256), SCM_EOL);
-#include "libguile/keywords.x"
-}
-
-
-/*
- Local Variables:
- c-file-style: "gnu"
- End:
-*/
+/* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004,
+ * 2006, 2008, 2009, 2013 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 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
+ * 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 <stdarg.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
+
+static SCM keyword_obarray;
+
+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 (keyword_obarray, symbol, SCM_BOOL_F);
+ if (scm_is_false (keyword))
+ {
+ SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol));
+ scm_hashq_set_x (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 *name)
+{
+ return scm_symbol_to_keyword (scm_from_locale_symbol (name));
+}
+
+SCM
+scm_from_locale_keywordn (const char *name, size_t len)
+{
+ return scm_symbol_to_keyword (scm_from_locale_symboln (name, len));
+}
+
+SCM
+scm_from_latin1_keyword (const char *name)
+{
+ return scm_symbol_to_keyword (scm_from_latin1_symbol (name));
+}
+
+SCM
+scm_from_utf8_keyword (const char *name)
+{
+ return scm_symbol_to_keyword (scm_from_utf8_symbol (name));
+}
+
+SCM_SYMBOL (scm_keyword_argument_error, "keyword-argument-error");
+
+void
+scm_c_bind_keyword_arguments (const char *subr, SCM rest,
+ scm_t_keyword_arguments_flags flags, ...)
+{
+ va_list va;
+
+ if (SCM_UNLIKELY (!(flags & SCM_ALLOW_NON_KEYWORD_ARGUMENTS)
+ && scm_ilength (rest) % 2 != 0))
+ scm_error (scm_keyword_argument_error,
+ subr, "Odd length of keyword argument list",
+ SCM_EOL, SCM_BOOL_F);
+
+ while (scm_is_pair (rest))
+ {
+ SCM kw_or_arg = SCM_CAR (rest);
+ SCM tail = SCM_CDR (rest);
+
+ if (scm_is_keyword (kw_or_arg) && scm_is_pair (tail))
+ {
+ SCM kw;
+ SCM *arg_p;
+
+ va_start (va, flags);
+ for (;;)
+ {
+ kw = va_arg (va, SCM);
+ if (SCM_UNBNDP (kw))
+ {
+ /* KW_OR_ARG is not in the list of expected keywords. */
+ if (!(flags & SCM_ALLOW_OTHER_KEYS))
+ scm_error_scm (scm_keyword_argument_error,
+ scm_from_locale_string (subr),
+ scm_from_latin1_string
+ ("Unrecognized keyword"),
+ SCM_EOL, scm_list_1 (kw_or_arg));
+ break;
+ }
+ arg_p = va_arg (va, SCM *);
+ if (scm_is_eq (kw_or_arg, kw))
+ {
+ /* We found the matching keyword. Store the
+ associated value and break out of the loop. */
+ *arg_p = SCM_CAR (tail);
+ break;
+ }
+ }
+ va_end (va);
+
+ /* Advance REST. */
+ rest = SCM_CDR (tail);
+ }
+ else
+ {
+ /* The next argument is not a keyword, or is a singleton
+ keyword at the end of REST. */
+ if (!(flags & SCM_ALLOW_NON_KEYWORD_ARGUMENTS))
+ scm_error_scm (scm_keyword_argument_error,
+ scm_from_locale_string (subr),
+ scm_from_latin1_string ("Invalid keyword"),
+ SCM_EOL, scm_list_1 (kw_or_arg));
+
+ /* Advance REST. */
+ rest = tail;
+ }
+ }
+}
+
+/* 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_print (scm_tc16_keyword, keyword_print);
+
+ keyword_obarray = scm_c_make_hash_table (0);
+#include "libguile/keywords.x"
+}
+
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff