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99027e3c MD |
1 | /* Copyright (C) 1995,1996,1997,1998 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 "_scm.h" | |
44 | #include "smob.h" | |
45 | ||
46 | #include "macros.h" | |
47 | ||
48 | long scm_tc16_macro; | |
49 | ||
99027e3c MD |
50 | SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro); |
51 | ||
52 | SCM | |
53 | scm_makacro (code) | |
54 | SCM code; | |
55 | { | |
8499074b MD |
56 | SCM_ASSERT (SCM_NFALSEP (scm_procedure_p (code)), |
57 | code, SCM_ARG1, s_makacro); | |
23a62151 | 58 | SCM_RETURN_NEWSMOB (scm_tc16_macro, code); |
99027e3c MD |
59 | } |
60 | ||
61 | ||
62 | SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro); | |
63 | ||
64 | SCM | |
65 | scm_makmacro (code) | |
66 | SCM code; | |
67 | { | |
8499074b MD |
68 | SCM_ASSERT (SCM_NFALSEP (scm_procedure_p (code)), |
69 | code, SCM_ARG1, s_makmacro); | |
23a62151 | 70 | SCM_RETURN_NEWSMOB (scm_tc16_macro | (1L << 16), code); |
99027e3c MD |
71 | } |
72 | ||
73 | ||
74 | SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro); | |
75 | ||
76 | SCM | |
77 | scm_makmmacro (code) | |
78 | SCM code; | |
79 | { | |
8499074b MD |
80 | SCM_ASSERT (SCM_NFALSEP (scm_procedure_p (code)), |
81 | code, SCM_ARG1, s_makmmacro); | |
23a62151 | 82 | SCM_RETURN_NEWSMOB (scm_tc16_macro | (2L << 16), code); |
99027e3c MD |
83 | } |
84 | ||
85 | ||
86 | SCM_PROC (s_macro_p, "macro?", 1, 0, 0, scm_macro_p); | |
87 | ||
88 | SCM | |
89 | scm_macro_p (obj) | |
90 | SCM obj; | |
91 | { | |
92 | return (SCM_NIMP (obj) && SCM_TYP16 (obj) == scm_tc16_macro | |
93 | ? SCM_BOOL_T | |
94 | : SCM_BOOL_F); | |
95 | } | |
96 | ||
97 | ||
98 | SCM_SYMBOL (scm_sym_syntax, "syntax"); | |
99 | SCM_SYMBOL (scm_sym_macro, "macro"); | |
100 | SCM_SYMBOL (scm_sym_mmacro, "macro!"); | |
101 | ||
102 | SCM_PROC (s_macro_type, "macro-type", 1, 0, 0, scm_macro_type); | |
103 | ||
104 | SCM | |
105 | scm_macro_type (m) | |
106 | SCM m; | |
107 | { | |
108 | if (!(SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro)) | |
109 | return SCM_BOOL_F; | |
110 | switch ((int) (SCM_CAR (m) >> 16)) | |
111 | { | |
112 | case 0: return scm_sym_syntax; | |
113 | case 1: return scm_sym_macro; | |
114 | case 2: return scm_sym_mmacro; | |
115 | default: scm_wrong_type_arg (s_macro_type, 1, m); | |
116 | } | |
117 | } | |
118 | ||
119 | ||
120 | SCM_PROC (s_macro_name, "macro-name", 1, 0, 0, scm_macro_name); | |
121 | ||
122 | SCM | |
123 | scm_macro_name (m) | |
124 | SCM m; | |
125 | { | |
126 | SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro, | |
127 | m, | |
128 | SCM_ARG1, | |
129 | s_macro_name); | |
130 | return scm_procedure_name (SCM_CDR (m)); | |
131 | } | |
132 | ||
133 | ||
134 | SCM_PROC (s_macro_transformer, "macro-transformer", 1, 0, 0, scm_macro_transformer); | |
135 | ||
136 | SCM | |
137 | scm_macro_transformer (m) | |
138 | SCM m; | |
139 | { | |
140 | SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro, | |
141 | m, | |
142 | SCM_ARG1, | |
143 | s_macro_transformer); | |
144 | return SCM_CLOSUREP (SCM_CDR (m)) ? SCM_CDR (m) : SCM_BOOL_F; | |
145 | } | |
146 | ||
147 | SCM | |
148 | scm_make_synt (name, macroizer, fcn) | |
3eeba8d4 | 149 | const char *name; |
99027e3c MD |
150 | SCM (*macroizer) (); |
151 | SCM (*fcn) (); | |
152 | { | |
153 | SCM symcell = scm_sysintern (name, SCM_UNDEFINED); | |
154 | long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); | |
155 | register SCM z; | |
156 | if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) | |
157 | tmp = 0; | |
158 | SCM_NEWCELL (z); | |
159 | SCM_SUBRF (z) = fcn; | |
160 | SCM_SETCAR (z, tmp + scm_tc7_subr_2); | |
161 | SCM_SETCDR (symcell, macroizer (z)); | |
162 | return SCM_CAR (symcell); | |
163 | } | |
164 | ||
165 | void | |
166 | scm_init_macros () | |
167 | { | |
23a62151 MD |
168 | scm_tc16_macro = scm_make_smob_type_mfpe ("macro", 0, |
169 | scm_markcdr, NULL, NULL, NULL); | |
99027e3c MD |
170 | #include "macros.x" |
171 | } |