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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 MD |
23 | #include "libguile/_scm.h" |
24 | #include "libguile/ports.h" | |
25 | #include "libguile/root.h" | |
26 | #include "libguile/smob.h" | |
00ffa0e7 | 27 | #include "libguile/hashtab.h" |
a0599745 MD |
28 | |
29 | #include "libguile/validate.h" | |
30 | #include "libguile/keywords.h" | |
cc95e00a MV |
31 | #include "libguile/strings.h" |
32 | ||
fca75708 MD |
33 | \f |
34 | ||
92c2555f | 35 | scm_t_bits scm_tc16_keyword; |
e841c3e0 | 36 | |
265a7997 MV |
37 | #define KEYWORDP(X) (SCM_SMOB_PREDICATE (scm_tc16_keyword, (X))) |
38 | #define KEYWORDSYM(X) (SCM_SMOB_OBJECT (X)) | |
39 | ||
fca75708 | 40 | static int |
e81d98ec | 41 | keyword_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
fca75708 MD |
42 | { |
43 | scm_puts ("#:", port); | |
265a7997 | 44 | scm_display (KEYWORDSYM (exp), port); |
fca75708 MD |
45 | return 1; |
46 | } | |
47 | ||
265a7997 MV |
48 | SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0, |
49 | (SCM obj), | |
50 | "Return @code{#t} if the argument @var{obj} is a keyword, else\n" | |
51 | "@code{#f}.") | |
52 | #define FUNC_NAME s_scm_keyword_p | |
53 | { | |
54 | return scm_from_bool (KEYWORDP (obj)); | |
55 | } | |
56 | #undef FUNC_NAME | |
57 | ||
58 | SCM_DEFINE (scm_symbol_to_keyword, "symbol->keyword", 1, 0, 0, | |
59 | (SCM symbol), | |
60 | "Return the keyword with the same name as @var{symbol}.") | |
61 | #define FUNC_NAME s_scm_symbol_to_keyword | |
fca75708 | 62 | { |
86d31dfe | 63 | SCM keyword; |
fca75708 | 64 | |
d7212289 | 65 | SCM_ASSERT_TYPE (scm_is_symbol (symbol), symbol, 0, NULL, "symbol"); |
fca75708 MD |
66 | |
67 | SCM_DEFER_INTS; | |
86d31dfe | 68 | keyword = scm_hashq_ref (scm_keyword_obarray, symbol, SCM_BOOL_F); |
7888309b | 69 | if (scm_is_false (keyword)) |
fca75708 | 70 | { |
54778cd3 | 71 | SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol)); |
86d31dfe | 72 | scm_hashq_set_x (scm_keyword_obarray, symbol, keyword); |
fca75708 MD |
73 | } |
74 | SCM_ALLOW_INTS; | |
86d31dfe | 75 | return keyword; |
fca75708 | 76 | } |
1bbd0b84 | 77 | #undef FUNC_NAME |
fca75708 | 78 | |
265a7997 MV |
79 | SCM_DEFINE (scm_keyword_to_symbol, "keyword->symbol", 1, 0, 0, |
80 | (SCM keyword), | |
81 | "Return the symbol with the same name as @var{keyword}.") | |
82 | #define FUNC_NAME s_scm_keyword_to_symbol | |
430a6cc3 | 83 | { |
265a7997 MV |
84 | scm_assert_smob_type (scm_tc16_keyword, keyword); |
85 | return KEYWORDSYM (keyword); | |
430a6cc3 | 86 | } |
265a7997 | 87 | #undef FUNC_NAME |
430a6cc3 | 88 | |
265a7997 MV |
89 | int |
90 | scm_is_keyword (SCM val) | |
fca75708 | 91 | { |
265a7997 | 92 | return KEYWORDP (val); |
fca75708 MD |
93 | } |
94 | ||
265a7997 MV |
95 | SCM |
96 | scm_from_locale_keyword (const char *str) | |
fca75708 | 97 | { |
265a7997 | 98 | return scm_symbol_to_keyword (scm_from_locale_symbol (str)); |
fca75708 | 99 | } |
fca75708 | 100 | |
265a7997 MV |
101 | SCM |
102 | scm_from_locale_keywordn (const char *str, size_t len) | |
103 | { | |
104 | return scm_symbol_to_keyword (scm_from_locale_symboln (str, len)); | |
105 | } | |
fca75708 MD |
106 | |
107 | ||
108 | void | |
109 | scm_init_keywords () | |
110 | { | |
e841c3e0 KN |
111 | scm_tc16_keyword = scm_make_smob_type ("keyword", 0); |
112 | scm_set_smob_mark (scm_tc16_keyword, scm_markcdr); | |
113 | scm_set_smob_print (scm_tc16_keyword, keyword_print); | |
f5f2dcff | 114 | |
231a4ea8 | 115 | scm_keyword_obarray = scm_c_make_hash_table (0); |
a0599745 | 116 | #include "libguile/keywords.x" |
fca75708 MD |
117 | } |
118 | ||
89e00824 ML |
119 | |
120 | /* | |
121 | Local Variables: | |
122 | c-file-style: "gnu" | |
123 | End: | |
124 | */ |