1 /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2006, 2008 Free Software Foundation, Inc.
3 * This library is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU Lesser General Public License
5 * as published by the Free Software Foundation; either version 3 of
6 * the License, or (at your option) any later version.
8 * This library is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * Lesser General Public License for more details.
13 * You should have received a copy of the GNU Lesser General Public
14 * License along with this library; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
27 #include "libguile/_scm.h"
28 #include "libguile/async.h"
29 #include "libguile/ports.h"
30 #include "libguile/root.h"
31 #include "libguile/smob.h"
32 #include "libguile/hashtab.h"
34 #include "libguile/validate.h"
35 #include "libguile/keywords.h"
36 #include "libguile/strings.h"
40 scm_t_bits scm_tc16_keyword
;
42 #define KEYWORDP(X) (SCM_SMOB_PREDICATE (scm_tc16_keyword, (X)))
43 #define KEYWORDSYM(X) (SCM_SMOB_OBJECT (X))
46 keyword_print (SCM exp
, SCM port
, scm_print_state
*pstate SCM_UNUSED
)
48 scm_puts ("#:", port
);
49 scm_display (KEYWORDSYM (exp
), port
);
53 SCM_DEFINE (scm_keyword_p
, "keyword?", 1, 0, 0,
55 "Return @code{#t} if the argument @var{obj} is a keyword, else\n"
57 #define FUNC_NAME s_scm_keyword_p
59 return scm_from_bool (KEYWORDP (obj
));
63 SCM_DEFINE (scm_symbol_to_keyword
, "symbol->keyword", 1, 0, 0,
65 "Return the keyword with the same name as @var{symbol}.")
66 #define FUNC_NAME s_scm_symbol_to_keyword
70 SCM_ASSERT_TYPE (scm_is_symbol (symbol
), symbol
, 0, NULL
, "symbol");
72 SCM_CRITICAL_SECTION_START
;
73 /* njrev: NEWSMOB and hashq_set_x can raise errors */
74 keyword
= scm_hashq_ref (scm_keyword_obarray
, symbol
, SCM_BOOL_F
);
75 if (scm_is_false (keyword
))
77 SCM_NEWSMOB (keyword
, scm_tc16_keyword
, SCM_UNPACK (symbol
));
78 scm_hashq_set_x (scm_keyword_obarray
, symbol
, keyword
);
80 SCM_CRITICAL_SECTION_END
;
85 SCM_DEFINE (scm_keyword_to_symbol
, "keyword->symbol", 1, 0, 0,
87 "Return the symbol with the same name as @var{keyword}.")
88 #define FUNC_NAME s_scm_keyword_to_symbol
90 scm_assert_smob_type (scm_tc16_keyword
, keyword
);
91 return KEYWORDSYM (keyword
);
96 scm_is_keyword (SCM val
)
98 return KEYWORDP (val
);
102 scm_from_locale_keyword (const char *str
)
104 return scm_symbol_to_keyword (scm_from_locale_symbol (str
));
108 scm_from_locale_keywordn (const char *str
, size_t len
)
110 return scm_symbol_to_keyword (scm_from_locale_symboln (str
, len
));
113 /* njrev: critical sections reviewed so far up to here */
117 scm_tc16_keyword
= scm_make_smob_type ("keyword", 0);
118 scm_set_smob_mark (scm_tc16_keyword
, scm_markcdr
);
119 scm_set_smob_print (scm_tc16_keyword
, keyword_print
);
121 scm_keyword_obarray
= scm_c_make_hash_table (0);
122 #include "libguile/keywords.x"