Commit | Line | Data |
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231a4ea8 | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003 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" | |
fca75708 MD |
31 | \f |
32 | ||
92c2555f | 33 | scm_t_bits scm_tc16_keyword; |
e841c3e0 | 34 | |
fca75708 | 35 | static int |
e81d98ec | 36 | keyword_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED) |
fca75708 | 37 | { |
bab246f3 DH |
38 | SCM symbol = SCM_KEYWORDSYM (exp); |
39 | ||
fca75708 | 40 | scm_puts ("#:", port); |
bab246f3 DH |
41 | scm_print_symbol_name (SCM_SYMBOL_CHARS (symbol) + 1, |
42 | SCM_SYMBOL_LENGTH (symbol) - 1, | |
ca314021 | 43 | port); |
bab246f3 | 44 | scm_remember_upto_here_1 (symbol); |
fca75708 MD |
45 | return 1; |
46 | } | |
47 | ||
a1ec6916 | 48 | SCM_DEFINE (scm_make_keyword_from_dash_symbol, "make-keyword-from-dash-symbol", 1, 0, 0, |
1bbd0b84 | 49 | (SCM symbol), |
872e0c72 | 50 | "Make a keyword object from a @var{symbol} that starts with a dash.") |
1bbd0b84 | 51 | #define FUNC_NAME s_scm_make_keyword_from_dash_symbol |
fca75708 | 52 | { |
86d31dfe | 53 | SCM keyword; |
fca75708 | 54 | |
0b5f3f34 | 55 | SCM_ASSERT (SCM_SYMBOLP (symbol) |
86c991c2 | 56 | && ('-' == SCM_SYMBOL_CHARS(symbol)[0]), |
1bbd0b84 | 57 | symbol, SCM_ARG1, FUNC_NAME); |
fca75708 MD |
58 | |
59 | SCM_DEFER_INTS; | |
86d31dfe MV |
60 | keyword = scm_hashq_ref (scm_keyword_obarray, symbol, SCM_BOOL_F); |
61 | if (SCM_FALSEP (keyword)) | |
fca75708 | 62 | { |
54778cd3 | 63 | SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol)); |
86d31dfe | 64 | scm_hashq_set_x (scm_keyword_obarray, symbol, keyword); |
fca75708 MD |
65 | } |
66 | SCM_ALLOW_INTS; | |
86d31dfe | 67 | return keyword; |
fca75708 | 68 | } |
1bbd0b84 | 69 | #undef FUNC_NAME |
fca75708 | 70 | |
430a6cc3 MD |
71 | SCM |
72 | scm_c_make_keyword (char *s) | |
73 | { | |
4c9419ac | 74 | char *buf = scm_malloc (strlen (s) + 2); |
85db4a2c DH |
75 | SCM symbol; |
76 | ||
430a6cc3 MD |
77 | buf[0] = '-'; |
78 | strcpy (buf + 1, s); | |
85db4a2c | 79 | symbol = scm_str2symbol (buf); |
4c9419ac | 80 | free (buf); |
85db4a2c DH |
81 | |
82 | return scm_make_keyword_from_dash_symbol (symbol); | |
430a6cc3 MD |
83 | } |
84 | ||
3b3b36dd | 85 | SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0, |
da4a1dba | 86 | (SCM obj), |
1e6808ea MG |
87 | "Return @code{#t} if the argument @var{obj} is a keyword, else\n" |
88 | "@code{#f}.") | |
1bbd0b84 | 89 | #define FUNC_NAME s_scm_keyword_p |
fca75708 | 90 | { |
22a52da1 | 91 | return SCM_BOOL (SCM_KEYWORDP (obj)); |
fca75708 | 92 | } |
1bbd0b84 | 93 | #undef FUNC_NAME |
fca75708 MD |
94 | |
95 | ||
3b3b36dd | 96 | SCM_DEFINE (scm_keyword_dash_symbol, "keyword-dash-symbol", 1, 0, 0, |
da4a1dba | 97 | (SCM keyword), |
872e0c72 NJ |
98 | "Return the dash symbol for @var{keyword}.\n" |
99 | "This is the inverse of @code{make-keyword-from-dash-symbol}.") | |
1bbd0b84 | 100 | #define FUNC_NAME s_scm_keyword_dash_symbol |
fca75708 | 101 | { |
22a52da1 DH |
102 | SCM_VALIDATE_KEYWORD (1, keyword); |
103 | return SCM_KEYWORDSYM (keyword); | |
fca75708 | 104 | } |
1bbd0b84 | 105 | #undef FUNC_NAME |
fca75708 MD |
106 | |
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 | */ |