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e7efe8e7 | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc. |
fca75708 | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
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. | |
fca75708 | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
fca75708 | 12 | * |
73be1d9e MV |
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 | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
fca75708 | 20 | \f |
dbb605f5 LC |
21 | #ifdef HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
fca75708 | 24 | |
13070bd3 DH |
25 | #include <string.h> |
26 | ||
a0599745 | 27 | #include "libguile/_scm.h" |
4e047c3e | 28 | #include "libguile/async.h" |
a0599745 MD |
29 | #include "libguile/ports.h" |
30 | #include "libguile/root.h" | |
31 | #include "libguile/smob.h" | |
00ffa0e7 | 32 | #include "libguile/hashtab.h" |
a0599745 MD |
33 | |
34 | #include "libguile/validate.h" | |
35 | #include "libguile/keywords.h" | |
cc95e00a MV |
36 | #include "libguile/strings.h" |
37 | ||
fca75708 MD |
38 | \f |
39 | ||
e7efe8e7 AW |
40 | static SCM keyword_obarray; |
41 | ||
92c2555f | 42 | scm_t_bits scm_tc16_keyword; |
e841c3e0 | 43 | |
265a7997 MV |
44 | #define KEYWORDP(X) (SCM_SMOB_PREDICATE (scm_tc16_keyword, (X))) |
45 | #define KEYWORDSYM(X) (SCM_SMOB_OBJECT (X)) | |
46 | ||
fca75708 | 47 | static int |
e81d98ec | 48 | keyword_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
fca75708 MD |
49 | { |
50 | scm_puts ("#:", port); | |
265a7997 | 51 | scm_display (KEYWORDSYM (exp), port); |
fca75708 MD |
52 | return 1; |
53 | } | |
54 | ||
265a7997 MV |
55 | SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0, |
56 | (SCM obj), | |
57 | "Return @code{#t} if the argument @var{obj} is a keyword, else\n" | |
58 | "@code{#f}.") | |
59 | #define FUNC_NAME s_scm_keyword_p | |
60 | { | |
61 | return scm_from_bool (KEYWORDP (obj)); | |
62 | } | |
63 | #undef FUNC_NAME | |
64 | ||
65 | SCM_DEFINE (scm_symbol_to_keyword, "symbol->keyword", 1, 0, 0, | |
66 | (SCM symbol), | |
67 | "Return the keyword with the same name as @var{symbol}.") | |
68 | #define FUNC_NAME s_scm_symbol_to_keyword | |
fca75708 | 69 | { |
86d31dfe | 70 | SCM keyword; |
fca75708 | 71 | |
d7212289 | 72 | SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, 0, NULL, "symbol"); |
fca75708 | 73 | |
9de87eea | 74 | SCM_CRITICAL_SECTION_START; |
a61b2054 | 75 | /* njrev: NEWSMOB and hashq_set_x can raise errors */ |
e7efe8e7 | 76 | keyword = scm_hashq_ref (keyword_obarray, symbol, SCM_BOOL_F); |
7888309b | 77 | if (scm_is_false (keyword)) |
fca75708 | 78 | { |
54778cd3 | 79 | SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol)); |
e7efe8e7 | 80 | scm_hashq_set_x (keyword_obarray, symbol, keyword); |
fca75708 | 81 | } |
9de87eea | 82 | SCM_CRITICAL_SECTION_END; |
86d31dfe | 83 | return keyword; |
fca75708 | 84 | } |
1bbd0b84 | 85 | #undef FUNC_NAME |
fca75708 | 86 | |
265a7997 MV |
87 | SCM_DEFINE (scm_keyword_to_symbol, "keyword->symbol", 1, 0, 0, |
88 | (SCM keyword), | |
89 | "Return the symbol with the same name as @var{keyword}.") | |
90 | #define FUNC_NAME s_scm_keyword_to_symbol | |
430a6cc3 | 91 | { |
265a7997 MV |
92 | scm_assert_smob_type (scm_tc16_keyword, keyword); |
93 | return KEYWORDSYM (keyword); | |
430a6cc3 | 94 | } |
265a7997 | 95 | #undef FUNC_NAME |
430a6cc3 | 96 | |
265a7997 MV |
97 | int |
98 | scm_is_keyword (SCM val) | |
fca75708 | 99 | { |
265a7997 | 100 | return KEYWORDP (val); |
fca75708 MD |
101 | } |
102 | ||
265a7997 MV |
103 | SCM |
104 | scm_from_locale_keyword (const char *str) | |
fca75708 | 105 | { |
265a7997 | 106 | return scm_symbol_to_keyword (scm_from_locale_symbol (str)); |
fca75708 | 107 | } |
fca75708 | 108 | |
265a7997 MV |
109 | SCM |
110 | scm_from_locale_keywordn (const char *str, size_t len) | |
111 | { | |
112 | return scm_symbol_to_keyword (scm_from_locale_symboln (str, len)); | |
113 | } | |
fca75708 | 114 | |
a61b2054 | 115 | /* njrev: critical sections reviewed so far up to here */ |
fca75708 MD |
116 | void |
117 | scm_init_keywords () | |
118 | { | |
e841c3e0 | 119 | scm_tc16_keyword = scm_make_smob_type ("keyword", 0); |
e841c3e0 | 120 | scm_set_smob_print (scm_tc16_keyword, keyword_print); |
f5f2dcff | 121 | |
e7efe8e7 | 122 | keyword_obarray = scm_c_make_hash_table (0); |
a0599745 | 123 | #include "libguile/keywords.x" |
fca75708 MD |
124 | } |
125 | ||
89e00824 ML |
126 | |
127 | /* | |
128 | Local Variables: | |
129 | c-file-style: "gnu" | |
130 | End: | |
131 | */ |