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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" | |
49 | #include "genio.h" | |
50 | #include "smob.h" | |
51 | ||
b6791b2e | 52 | #include "validate.h" |
fca75708 MD |
53 | #include "keywords.h" |
54 | \f | |
55 | ||
fca75708 | 56 | static int |
1bbd0b84 | 57 | prin_keyword (SCM exp,SCM port,scm_print_state *pstate) |
fca75708 MD |
58 | { |
59 | scm_puts ("#:", port); | |
60 | scm_puts(1 + SCM_CHARS (SCM_CDR (exp)), port); | |
61 | return 1; | |
62 | } | |
63 | ||
64 | int scm_tc16_keyword; | |
65 | ||
b27aca0a MD |
66 | /* This global is only kept for backward compatibility. |
67 | Will be removed in next release. */ | |
68 | int scm_tc16_kw; | |
69 | ||
fca75708 | 70 | |
a1ec6916 | 71 | SCM_DEFINE (scm_make_keyword_from_dash_symbol, "make-keyword-from-dash-symbol", 1, 0, 0, |
1bbd0b84 | 72 | (SCM symbol), |
da4a1dba | 73 | "Return a keyword object from SYMBOL that starts with `-' (a dash).") |
1bbd0b84 | 74 | #define FUNC_NAME s_scm_make_keyword_from_dash_symbol |
fca75708 MD |
75 | { |
76 | SCM vcell; | |
77 | ||
0b5f3f34 | 78 | SCM_ASSERT (SCM_SYMBOLP (symbol) |
fca75708 | 79 | && ('-' == SCM_CHARS(symbol)[0]), |
1bbd0b84 | 80 | symbol, SCM_ARG1, FUNC_NAME); |
fca75708 MD |
81 | |
82 | SCM_DEFER_INTS; | |
83 | vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray); | |
84 | if (vcell == SCM_BOOL_F) | |
85 | { | |
86 | SCM keyword; | |
23a62151 | 87 | SCM_NEWSMOB (keyword, scm_tc16_keyword, symbol); |
fca75708 MD |
88 | scm_intern_symbol (scm_keyword_obarray, symbol); |
89 | vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray); | |
90 | SCM_SETCDR (vcell, keyword); | |
91 | } | |
92 | SCM_ALLOW_INTS; | |
93 | return SCM_CDR (vcell); | |
94 | } | |
1bbd0b84 | 95 | #undef FUNC_NAME |
fca75708 | 96 | |
430a6cc3 MD |
97 | SCM |
98 | scm_c_make_keyword (char *s) | |
99 | { | |
100 | SCM vcell; | |
101 | char *buf = scm_must_malloc (strlen (s) + 2, "keyword"); | |
102 | buf[0] = '-'; | |
103 | strcpy (buf + 1, s); | |
104 | vcell = scm_sysintern0 (buf); | |
105 | scm_must_free (buf); | |
106 | return scm_make_keyword_from_dash_symbol (SCM_CAR (vcell)); | |
107 | } | |
108 | ||
3b3b36dd | 109 | SCM_DEFINE (scm_keyword_p, "keyword?", 1, 0, 0, |
da4a1dba GB |
110 | (SCM obj), |
111 | "Returns #t if the argument OBJ is a keyword, else #f.") | |
1bbd0b84 | 112 | #define FUNC_NAME s_scm_keyword_p |
fca75708 | 113 | { |
0c95b57d | 114 | return SCM_BOOL(SCM_KEYWORDP (obj)); |
fca75708 | 115 | } |
1bbd0b84 | 116 | #undef FUNC_NAME |
fca75708 MD |
117 | |
118 | ||
3b3b36dd | 119 | SCM_DEFINE (scm_keyword_dash_symbol, "keyword-dash-symbol", 1, 0, 0, |
da4a1dba GB |
120 | (SCM keyword), |
121 | "Return KEYWORD as a dash symbol.\n" | |
122 | "This is the inverse of `make-keyword-from-dash-symbol'.\n") | |
1bbd0b84 | 123 | #define FUNC_NAME s_scm_keyword_dash_symbol |
fca75708 | 124 | { |
3b3b36dd | 125 | SCM_VALIDATE_KEYWORD (1,keyword); |
fca75708 MD |
126 | return SCM_CDR (keyword); |
127 | } | |
1bbd0b84 | 128 | #undef FUNC_NAME |
fca75708 MD |
129 | |
130 | ||
131 | ||
132 | void | |
133 | scm_init_keywords () | |
134 | { | |
23a62151 MD |
135 | scm_tc16_keyword = scm_make_smob_type_mfpe ("keyword", 0, |
136 | scm_markcdr, NULL, prin_keyword, NULL); | |
b27aca0a | 137 | scm_tc16_kw = scm_tc16_keyword; |
fca75708 MD |
138 | scm_keyword_obarray = scm_make_vector (SCM_MAKINUM (256), SCM_EOL); |
139 | #include "keywords.x" | |
140 | } | |
141 |