Commit | Line | Data |
---|---|---|
1ffa265b MD |
1 | /* Copyright (C) 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 | ||
45 | #include "eval.h" | |
d164a5af | 46 | #include "procprop.h" |
1ffa265b MD |
47 | |
48 | #include "modules.h" | |
49 | ||
281004cc | 50 | static SCM the_root_module; |
d164a5af | 51 | static SCM root_module_lookup_closure; |
281004cc MD |
52 | |
53 | SCM | |
54 | scm_the_root_module () | |
55 | { | |
56 | return SCM_CDR (the_root_module); | |
57 | } | |
58 | ||
1ffa265b MD |
59 | static SCM the_module; |
60 | ||
61 | SCM | |
62 | scm_selected_module () | |
63 | { | |
64 | return SCM_CDR (the_module); | |
65 | } | |
66 | ||
67 | static SCM set_current_module; | |
68 | ||
69 | SCM | |
70 | scm_select_module (SCM module) | |
71 | { | |
72 | SCM old = scm_selected_module (); | |
73 | scm_apply (SCM_CDR (set_current_module), SCM_LIST1 (module), SCM_EOL); | |
74 | return old; | |
75 | } | |
76 | ||
77 | SCM_SYMBOL (scm_sym_app, "app"); | |
78 | SCM_SYMBOL (scm_sym_modules, "modules"); | |
79 | static SCM module_prefix; | |
80 | ||
81 | static SCM | |
82 | scm_module_full_name (SCM name) | |
83 | { | |
84 | if (SCM_CAR (name) == scm_sym_app) | |
85 | return name; | |
86 | else | |
87 | return scm_append (SCM_LIST2 (module_prefix, name)); | |
88 | } | |
89 | ||
90 | static SCM make_modules_in; | |
281004cc | 91 | static SCM beautify_user_module_x; |
1ffa265b MD |
92 | |
93 | SCM | |
94 | scm_make_module (SCM name) | |
95 | { | |
96 | return scm_apply (SCM_CDR (make_modules_in), | |
281004cc | 97 | SCM_LIST2 (scm_the_root_module (), |
1ffa265b MD |
98 | scm_module_full_name (name)), |
99 | SCM_EOL); | |
100 | } | |
101 | ||
281004cc MD |
102 | SCM |
103 | scm_ensure_user_module (SCM module) | |
104 | { | |
105 | scm_apply (SCM_CDR (beautify_user_module_x), SCM_LIST1 (module), SCM_EOL); | |
106 | return SCM_UNSPECIFIED; | |
107 | } | |
108 | ||
1ffa265b MD |
109 | static SCM module_eval_closure; |
110 | ||
111 | SCM | |
112 | scm_module_lookup_closure (SCM module) | |
113 | { | |
114 | return scm_apply (SCM_CDR (module_eval_closure), | |
115 | SCM_LIST1 (module), | |
116 | SCM_EOL); | |
117 | } | |
118 | ||
90184345 MD |
119 | static SCM resolve_module; |
120 | ||
121 | SCM | |
122 | scm_resolve_module (SCM name) | |
123 | { | |
124 | return scm_apply (SCM_CDR (resolve_module), SCM_LIST1 (name), SCM_EOL); | |
125 | } | |
126 | ||
281004cc MD |
127 | static SCM try_module_autoload; |
128 | ||
129 | SCM | |
130 | scm_load_scheme_module (SCM name) | |
131 | { | |
132 | return scm_apply (SCM_CDR (try_module_autoload), SCM_LIST1 (name), SCM_EOL); | |
133 | } | |
134 | ||
d164a5af MD |
135 | /* Environments |
136 | */ | |
137 | ||
138 | SCM | |
139 | scm_top_level_env (thunk) | |
140 | SCM thunk; | |
141 | { | |
142 | if (SCM_IMP (thunk)) | |
143 | return SCM_EOL; | |
144 | else | |
145 | return scm_cons (thunk, SCM_EOL); | |
146 | } | |
147 | ||
148 | SCM | |
149 | scm_env_top_level (SCM env) | |
150 | { | |
151 | while (SCM_NIMP (env)) | |
152 | { | |
153 | if (!SCM_CONSP (SCM_CAR (env)) | |
154 | && SCM_NFALSEP (scm_procedure_p (SCM_CAR (env)))) | |
155 | return SCM_CAR(env); | |
156 | env = SCM_CDR (env); | |
157 | } | |
158 | return SCM_BOOL_F; | |
159 | } | |
160 | ||
161 | ||
162 | SCM_SYMBOL (scm_sym_system_module, "system-module"); | |
163 | ||
164 | SCM | |
165 | scm_system_module_env_p (SCM env) | |
166 | { | |
167 | SCM proc = scm_env_top_level (env); | |
168 | if (SCM_FALSEP (proc)) | |
169 | proc = root_module_lookup_closure; | |
170 | return ((SCM_NFALSEP (scm_procedure_property (proc, | |
171 | scm_sym_system_module))) | |
172 | ? SCM_BOOL_T | |
173 | : SCM_BOOL_F); | |
174 | } | |
175 | ||
1ffa265b MD |
176 | void |
177 | scm_init_modules () | |
178 | { | |
179 | #include "modules.x" | |
180 | } | |
181 | ||
182 | void | |
183 | scm_post_boot_init_modules () | |
184 | { | |
281004cc | 185 | the_root_module = scm_intern0 ("the-root-module"); |
1ffa265b MD |
186 | the_module = scm_intern0 ("the-module"); |
187 | set_current_module = scm_intern0 ("set-current-module"); | |
188 | module_prefix = scm_permanent_object (SCM_LIST2 (scm_sym_app, | |
189 | scm_sym_modules)); | |
190 | make_modules_in = scm_intern0 ("make-modules-in"); | |
281004cc | 191 | beautify_user_module_x = scm_intern0 ("beautify-user-module!"); |
1ffa265b | 192 | module_eval_closure = scm_intern0 ("module-eval-closure"); |
d164a5af MD |
193 | root_module_lookup_closure = scm_permanent_object |
194 | (scm_module_lookup_closure (SCM_CDR (the_root_module))); | |
90184345 | 195 | resolve_module = scm_intern0 ("resolve-module"); |
281004cc | 196 | try_module_autoload = scm_intern0 ("try-module-autoload"); |
1ffa265b | 197 | } |