Commit | Line | Data |
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cc95e00a | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004 Free Software Foundation, Inc. |
fca75708 | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
fca75708 | 7 | * |
73be1d9e MV |
8 | * This library is distributed in the hope that it will be useful, |
9 | * but 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. | |
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 | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
fca75708 MD |
19 | \f |
20 | ||
13070bd3 DH |
21 | #include <string.h> |
22 | ||
a0599745 | 23 | #include "libguile/_scm.h" |
4e047c3e | 24 | #include "libguile/async.h" |
a0599745 MD |
25 | #include "libguile/ports.h" |
26 | #include "libguile/root.h" | |
27 | #include "libguile/smob.h" | |
00ffa0e7 | 28 | #include "libguile/hashtab.h" |
a0599745 MD |
29 | |
30 | #include "libguile/validate.h" | |
31 | #include "libguile/keywords.h" | |
cc95e00a MV |
32 | #include "libguile/strings.h" |
33 | ||
fca75708 MD |
34 | \f |
35 | ||
92c2555f | 36 | scm_t_bits scm_tc16_keyword; |
e841c3e0 | 37 | |
265a7997 MV |
38 | #define KEYWORDP(X) (SCM_SMOB_PREDICATE (scm_tc16_keyword, (X))) |
39 | #define KEYWORDSYM(X) (SCM_SMOB_OBJECT (X)) | |
40 | ||
fca75708 | 41 | static int |
e81d98ec | 42 | keyword_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
fca75708 MD |
43 | { |
44 | scm_puts ("#:", port); | |
265a7997 | 45 | scm_display (KEYWORDSYM (exp), port); |
fca75708 MD |
46 | return 1; |
47 | } | |
48 | ||
265a7997 MV |
49 | SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0, |
50 | (SCM obj), | |
51 | "Return @code{#t} if the argument @var{obj} is a keyword, else\n" | |
52 | "@code{#f}.") | |
53 | #define FUNC_NAME s_scm_keyword_p | |
54 | { | |
55 | return scm_from_bool (KEYWORDP (obj)); | |
56 | } | |
57 | #undef FUNC_NAME | |
58 | ||
59 | SCM_DEFINE (scm_symbol_to_keyword, "symbol->keyword", 1, 0, 0, | |
60 | (SCM symbol), | |
61 | "Return the keyword with the same name as @var{symbol}.") | |
62 | #define FUNC_NAME s_scm_symbol_to_keyword | |
fca75708 | 63 | { |
86d31dfe | 64 | SCM keyword; |
fca75708 | 65 | |
d7212289 | 66 | SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, 0, NULL, "symbol"); |
fca75708 | 67 | |
9de87eea | 68 | SCM_CRITICAL_SECTION_START; |
86d31dfe | 69 | keyword = scm_hashq_ref (scm_keyword_obarray, symbol, SCM_BOOL_F); |
7888309b | 70 | if (scm_is_false (keyword)) |
fca75708 | 71 | { |
54778cd3 | 72 | SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol)); |
86d31dfe | 73 | scm_hashq_set_x (scm_keyword_obarray, symbol, keyword); |
fca75708 | 74 | } |
9de87eea | 75 | SCM_CRITICAL_SECTION_END; |
86d31dfe | 76 | return keyword; |
fca75708 | 77 | } |
1bbd0b84 | 78 | #undef FUNC_NAME |
fca75708 | 79 | |
265a7997 MV |
80 | SCM_DEFINE (scm_keyword_to_symbol, "keyword->symbol", 1, 0, 0, |
81 | (SCM keyword), | |
82 | "Return the symbol with the same name as @var{keyword}.") | |
83 | #define FUNC_NAME s_scm_keyword_to_symbol | |
430a6cc3 | 84 | { |
265a7997 MV |
85 | scm_assert_smob_type (scm_tc16_keyword, keyword); |
86 | return KEYWORDSYM (keyword); | |
430a6cc3 | 87 | } |
265a7997 | 88 | #undef FUNC_NAME |
430a6cc3 | 89 | |
265a7997 MV |
90 | int |
91 | scm_is_keyword (SCM val) | |
fca75708 | 92 | { |
265a7997 | 93 | return KEYWORDP (val); |
fca75708 MD |
94 | } |
95 | ||
265a7997 MV |
96 | SCM |
97 | scm_from_locale_keyword (const char *str) | |
fca75708 | 98 | { |
265a7997 | 99 | return scm_symbol_to_keyword (scm_from_locale_symbol (str)); |
fca75708 | 100 | } |
fca75708 | 101 | |
265a7997 MV |
102 | SCM |
103 | scm_from_locale_keywordn (const char *str, size_t len) | |
104 | { | |
105 | return scm_symbol_to_keyword (scm_from_locale_symboln (str, len)); | |
106 | } | |
fca75708 MD |
107 | |
108 | ||
109 | void | |
110 | scm_init_keywords () | |
111 | { | |
e841c3e0 KN |
112 | scm_tc16_keyword = scm_make_smob_type ("keyword", 0); |
113 | scm_set_smob_mark (scm_tc16_keyword, scm_markcdr); | |
114 | scm_set_smob_print (scm_tc16_keyword, keyword_print); | |
f5f2dcff | 115 | |
231a4ea8 | 116 | scm_keyword_obarray = scm_c_make_hash_table (0); |
a0599745 | 117 | #include "libguile/keywords.x" |
fca75708 MD |
118 | } |
119 | ||
89e00824 ML |
120 | |
121 | /* | |
122 | Local Variables: | |
123 | c-file-style: "gnu" | |
124 | End: | |
125 | */ |