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c428e58681
* libguile/keywords.c (scm_from_latin1_keyword, scm_from_utf8_keyword): New functions appropriate for use when keyword name is a constant. (scm_from_locale_keyword, scm_from_locale_keywordn): Change formal parameter from `str' to `name'. * libguile/keywords.h: Add prototypes for new functions. Change formal parameter of scm_from_locale_keyword* from `str' to `name'. * doc/ref/api-data.texi: Document new functions. Remind users that scm_from_locale_keyword should not be used when the name is a C string constant. Change formal parameter from `str' to `name'.
143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <string.h>
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#include "libguile/_scm.h"
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#include "libguile/async.h"
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#include "libguile/ports.h"
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#include "libguile/root.h"
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#include "libguile/smob.h"
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#include "libguile/hashtab.h"
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#include "libguile/validate.h"
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#include "libguile/keywords.h"
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#include "libguile/strings.h"
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static SCM keyword_obarray;
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scm_t_bits scm_tc16_keyword;
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#define KEYWORDP(X) (SCM_SMOB_PREDICATE (scm_tc16_keyword, (X)))
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#define KEYWORDSYM(X) (SCM_SMOB_OBJECT (X))
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static int
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keyword_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
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{
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scm_puts ("#:", port);
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scm_display (KEYWORDSYM (exp), port);
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return 1;
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}
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SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0,
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(SCM obj),
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"Return @code{#t} if the argument @var{obj} is a keyword, else\n"
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"@code{#f}.")
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#define FUNC_NAME s_scm_keyword_p
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{
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return scm_from_bool (KEYWORDP (obj));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_symbol_to_keyword, "symbol->keyword", 1, 0, 0,
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(SCM symbol),
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"Return the keyword with the same name as @var{symbol}.")
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#define FUNC_NAME s_scm_symbol_to_keyword
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{
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SCM keyword;
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SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, 0, NULL, "symbol");
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SCM_CRITICAL_SECTION_START;
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/* njrev: NEWSMOB and hashq_set_x can raise errors */
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keyword = scm_hashq_ref (keyword_obarray, symbol, SCM_BOOL_F);
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if (scm_is_false (keyword))
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{
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SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol));
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scm_hashq_set_x (keyword_obarray, symbol, keyword);
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}
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SCM_CRITICAL_SECTION_END;
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return keyword;
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_keyword_to_symbol, "keyword->symbol", 1, 0, 0,
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(SCM keyword),
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"Return the symbol with the same name as @var{keyword}.")
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#define FUNC_NAME s_scm_keyword_to_symbol
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{
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scm_assert_smob_type (scm_tc16_keyword, keyword);
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return KEYWORDSYM (keyword);
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}
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#undef FUNC_NAME
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int
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scm_is_keyword (SCM val)
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{
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return KEYWORDP (val);
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}
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SCM
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scm_from_locale_keyword (const char *name)
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{
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return scm_symbol_to_keyword (scm_from_locale_symbol (name));
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}
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SCM
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scm_from_locale_keywordn (const char *name, size_t len)
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{
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return scm_symbol_to_keyword (scm_from_locale_symboln (name, len));
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}
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SCM
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scm_from_latin1_keyword (const char *name)
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{
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return scm_symbol_to_keyword (scm_from_latin1_symbol (name));
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}
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SCM
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scm_from_utf8_keyword (const char *name)
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{
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return scm_symbol_to_keyword (scm_from_utf8_symbol (name));
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}
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/* njrev: critical sections reviewed so far up to here */
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void
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scm_init_keywords ()
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{
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scm_tc16_keyword = scm_make_smob_type ("keyword", 0);
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scm_set_smob_print (scm_tc16_keyword, keyword_print);
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keyword_obarray = scm_c_make_hash_table (0);
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#include "libguile/keywords.x"
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}
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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