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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. */ | |
41 | \f | |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
45 | #include "genio.h" | |
46 | #include "smob.h" | |
47 | ||
48 | #include "keywords.h" | |
49 | \f | |
50 | ||
51 | ||
52 | static scm_sizet free_keyword SCM_P ((SCM obj)); | |
53 | ||
54 | static scm_sizet | |
55 | free_keyword (obj) | |
56 | SCM obj; | |
57 | { | |
58 | return 0; | |
59 | } | |
60 | ||
61 | ||
62 | static int prin_keyword SCM_P ((SCM exp, SCM port, scm_print_state *pstate)); | |
63 | ||
64 | static int | |
65 | prin_keyword (exp, port, pstate) | |
66 | SCM exp; | |
67 | SCM port; | |
68 | scm_print_state *pstate; | |
69 | { | |
70 | scm_puts ("#:", port); | |
71 | scm_puts(1 + SCM_CHARS (SCM_CDR (exp)), port); | |
72 | return 1; | |
73 | } | |
74 | ||
75 | int scm_tc16_keyword; | |
76 | ||
77 | static scm_smobfuns keyword_smob = | |
78 | {scm_markcdr, free_keyword, prin_keyword, 0}; | |
79 | ||
80 | ||
81 | ||
82 | SCM_PROC (s_make_keyword_from_dash_symbol, "make-keyword-from-dash-symbol", 1, 0, 0, scm_make_keyword_from_dash_symbol); | |
83 | ||
84 | SCM | |
85 | scm_make_keyword_from_dash_symbol (symbol) | |
86 | SCM symbol; | |
87 | { | |
88 | SCM vcell; | |
89 | ||
90 | SCM_ASSERT (SCM_NIMP (symbol) | |
91 | && SCM_SYMBOLP (symbol) | |
92 | && ('-' == SCM_CHARS(symbol)[0]), | |
93 | symbol, SCM_ARG1, s_make_keyword_from_dash_symbol); | |
94 | ||
95 | SCM_DEFER_INTS; | |
96 | vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray); | |
97 | if (vcell == SCM_BOOL_F) | |
98 | { | |
99 | SCM keyword; | |
100 | SCM_NEWCELL(keyword); | |
101 | SCM_SETCAR (keyword, (SCM)scm_tc16_keyword); | |
102 | SCM_SETCDR (keyword, symbol); | |
103 | scm_intern_symbol (scm_keyword_obarray, symbol); | |
104 | vcell = scm_sym2ovcell_soft (symbol, scm_keyword_obarray); | |
105 | SCM_SETCDR (vcell, keyword); | |
106 | } | |
107 | SCM_ALLOW_INTS; | |
108 | return SCM_CDR (vcell); | |
109 | } | |
110 | ||
111 | SCM_PROC(s_keyword_p, "keyword?", 1, 0, 0, scm_keyword_p); | |
112 | ||
113 | SCM | |
114 | scm_keyword_p (obj) | |
115 | SCM obj; | |
116 | { | |
117 | return ( (SCM_NIMP(obj) && SCM_KEYWORDP (obj)) | |
118 | ? SCM_BOOL_T | |
119 | : SCM_BOOL_F); | |
120 | } | |
121 | ||
122 | ||
123 | ||
124 | SCM_PROC(s_keyword_dash_symbol, "keyword-dash-symbol", 1, 0, 0, scm_keyword_dash_symbol); | |
125 | ||
126 | SCM | |
127 | scm_keyword_dash_symbol (keyword) | |
128 | SCM keyword; | |
129 | { | |
130 | SCM_ASSERT (SCM_NIMP (keyword) && SCM_KEYWORDP (keyword), | |
131 | keyword, SCM_ARG1, s_keyword_dash_symbol); | |
132 | return SCM_CDR (keyword); | |
133 | } | |
134 | ||
135 | ||
136 | ||
137 | ||
138 | ||
139 | void | |
140 | scm_init_keywords () | |
141 | { | |
142 | scm_tc16_keyword = scm_newsmob (&keyword_smob); | |
143 | scm_keyword_obarray = scm_make_vector (SCM_MAKINUM (256), SCM_EOL); | |
144 | #include "keywords.x" | |
145 | } | |
146 |