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fca75708 MD |
1 | /* Copyright (C) 1995,1996,1997,1998, 1999 Free Software Foundation, Inc. |
2 | * | |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program 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 | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
16 | * Boston, MA 02111-1307 USA | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
40 | * If you do not wish that, delete this exception notice. */ | |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
fca75708 MD |
45 | \f |
46 | ||
47 | #include <stdio.h> | |
48 | #include "_scm.h" | |
f04d8caf | 49 | #include "ports.h" |
ba11fd4c | 50 | #include "root.h" |
fca75708 | 51 | #include "smob.h" |
003d1fd0 | 52 | #include "vectors.h" |
fca75708 | 53 | |
b6791b2e | 54 | #include "validate.h" |
fca75708 MD |
55 | #include "keywords.h" |
56 | \f | |
57 | ||
fca75708 | 58 | static int |
1bbd0b84 | 59 | prin_keyword (SCM exp,SCM port,scm_print_state *pstate) |
fca75708 MD |
60 | { |
61 | scm_puts ("#:", port); | |
62 | scm_puts(1 + SCM_CHARS (SCM_CDR (exp)), port); | |
63 | return 1; | |
64 | } | |
65 | ||
66 | int scm_tc16_keyword; | |
67 | ||
b27aca0a MD |
68 | /* This global is only kept for backward compatibility. |
69 | Will be removed in next release. */ | |
70 | int scm_tc16_kw; | |
71 | ||
fca75708 | 72 | |
a1ec6916 | 73 | SCM_DEFINE (scm_make_keyword_from_dash_symbol, "make-keyword-from-dash-symbol", 1, 0, 0, |
1bbd0b84 | 74 | (SCM symbol), |
da4a1dba | 75 | "Return a keyword object from SYMBOL that starts with `-' (a dash).") |
1bbd0b84 | 76 | #define FUNC_NAME s_scm_make_keyword_from_dash_symbol |
fca75708 MD |
77 | { |
78 | SCM vcell; | |
79 | ||
0b5f3f34 | 80 | SCM_ASSERT (SCM_SYMBOLP (symbol) |
fca75708 | 81 | && ('-' == SCM_CHARS(symbol)[0]), |
1bbd0b84 | 82 | symbol, SCM_ARG1, FUNC_NAME); |
fca75708 MD |
83 | |
84 | SCM_DEFER_INTS; | |
85 | vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray); | |
54778cd3 | 86 | if (SCM_FALSEP (vcell)) |
fca75708 MD |
87 | { |
88 | SCM keyword; | |
54778cd3 | 89 | SCM_NEWSMOB (keyword, scm_tc16_keyword, SCM_UNPACK (symbol)); |
fca75708 MD |
90 | scm_intern_symbol (scm_keyword_obarray, symbol); |
91 | vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray); | |
92 | SCM_SETCDR (vcell, keyword); | |
93 | } | |
94 | SCM_ALLOW_INTS; | |
95 | return SCM_CDR (vcell); | |
96 | } | |
1bbd0b84 | 97 | #undef FUNC_NAME |
fca75708 | 98 | |
430a6cc3 MD |
99 | SCM |
100 | scm_c_make_keyword (char *s) | |
101 | { | |
102 | SCM vcell; | |
103 | char *buf = scm_must_malloc (strlen (s) + 2, "keyword"); | |
104 | buf[0] = '-'; | |
105 | strcpy (buf + 1, s); | |
106 | vcell = scm_sysintern0 (buf); | |
107 | scm_must_free (buf); | |
108 | return scm_make_keyword_from_dash_symbol (SCM_CAR (vcell)); | |
109 | } | |
110 | ||
3b3b36dd | 111 | SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0, |
da4a1dba GB |
112 | (SCM obj), |
113 | "Returns #t if the argument OBJ is a keyword, else #f.") | |
1bbd0b84 | 114 | #define FUNC_NAME s_scm_keyword_p |
fca75708 | 115 | { |
0c95b57d | 116 | return SCM_BOOL(SCM_KEYWORDP (obj)); |
fca75708 | 117 | } |
1bbd0b84 | 118 | #undef FUNC_NAME |
fca75708 MD |
119 | |
120 | ||
3b3b36dd | 121 | SCM_DEFINE (scm_keyword_dash_symbol, "keyword-dash-symbol", 1, 0, 0, |
da4a1dba GB |
122 | (SCM keyword), |
123 | "Return KEYWORD as a dash symbol.\n" | |
124 | "This is the inverse of `make-keyword-from-dash-symbol'.\n") | |
1bbd0b84 | 125 | #define FUNC_NAME s_scm_keyword_dash_symbol |
fca75708 | 126 | { |
3b3b36dd | 127 | SCM_VALIDATE_KEYWORD (1,keyword); |
fca75708 MD |
128 | return SCM_CDR (keyword); |
129 | } | |
1bbd0b84 | 130 | #undef FUNC_NAME |
fca75708 MD |
131 | |
132 | ||
133 | ||
134 | void | |
135 | scm_init_keywords () | |
136 | { | |
23a62151 MD |
137 | scm_tc16_keyword = scm_make_smob_type_mfpe ("keyword", 0, |
138 | scm_markcdr, NULL, prin_keyword, NULL); | |
b27aca0a | 139 | scm_tc16_kw = scm_tc16_keyword; |
fca75708 MD |
140 | scm_keyword_obarray = scm_make_vector (SCM_MAKINUM (256), SCM_EOL); |
141 | #include "keywords.x" | |
142 | } | |
143 | ||
89e00824 ML |
144 | |
145 | /* | |
146 | Local Variables: | |
147 | c-file-style: "gnu" | |
148 | End: | |
149 | */ |