2 ly-module.cc -- implement guile module stuff.
4 source file of the GNU LilyPond music typesetter
6 (c) 2002--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "lily-guile.hh"
13 #include "protected-scm.hh"
15 #define MODULE_GC_KLUDGE
17 #ifdef MODULE_GC_KLUDGE
18 Protected_scm anonymous_modules = SCM_EOL;
23 clear_anonymous_modules ()
25 for (SCM s = anonymous_modules;
29 SCM module = scm_car (s);
30 SCM closure = SCM_MODULE_EVAL_CLOSURE(module);
31 SCM prop = scm_procedure_property (closure, ly_symbol2scm ("module"));
33 if (ly_is_module (prop))
35 scm_set_procedure_property_x (closure, ly_symbol2scm ("module"),
40 anonymous_modules = SCM_EOL;
44 ly_make_anonymous_module (bool safe)
49 SCM maker = ly_lily_module_constant ("make-module");
51 SCM scm_module = ly_lily_module_constant ("the-scm-module");
53 mod = scm_call_0 (maker);
54 scm_module_define (mod, ly_symbol2scm ("%module-public-interface"),
57 ly_use_module (mod, scm_module);
58 ly_use_module (mod, global_lily_module);
62 SCM proc = ly_lily_module_constant ("make-safe-lilypond-module");
63 mod = scm_call_0 (proc);
66 #ifdef MODULE_GC_KLUDGE
67 anonymous_modules = scm_cons (mod, anonymous_modules);
74 ly_use_module (SCM mod, SCM used)
77 = scm_list_3 (ly_symbol2scm ("module-use!"),
79 scm_list_2 (ly_symbol2scm ("module-public-interface"),
82 return scm_eval (expr, global_lily_module);
85 #define FUNC_NAME __FUNCTION__
90 accumulate_symbol (void *closure, SCM key, SCM val, SCM result)
94 return scm_cons (key, result);
98 ly_module_symbols (SCM mod)
100 SCM_VALIDATE_MODULE (1, mod);
102 SCM obarr = SCM_MODULE_OBARRAY (mod);
103 return scm_internal_hash_fold ((Hash_closure_function) & accumulate_symbol,
104 NULL, SCM_EOL, obarr);
108 entry_to_alist (void *closure, SCM key, SCM val, SCM result)
111 if (scm_variable_bound_p (val) == SCM_BOOL_T)
112 return scm_cons (scm_cons (key, scm_variable_ref (val)), result);
113 programming_error ("unbound variable in module");
117 LY_DEFINE (ly_module2alist, "ly:module->alist",
119 "Dump the contents of module @var{mod} as an alist.")
121 SCM_VALIDATE_MODULE (1, mod);
122 SCM obarr = SCM_MODULE_OBARRAY (mod);
124 return scm_internal_hash_fold ((Hash_closure_function) & entry_to_alist, NULL, SCM_EOL, obarr);
128 ly_export (SCM module, SCM namelist)
130 static SCM export_function;
131 if (!export_function)
132 export_function = scm_permanent_object (scm_c_lookup ("module-export!"));
134 scm_call_2 (SCM_VARIABLE_REF (export_function), module, namelist);
138 ly_reexport_module (SCM mod)
140 ly_export (mod, ly_module_symbols (mod));
145 #ifdef MODULE_GC_KLUDGE
147 redefine_keyval (void *closure, SCM key, SCM val, SCM result)
150 SCM new_tab = result;
151 scm_hashq_set_x (new_tab, key, val);
157 Kludge for older GUILE 1.6 versions.
160 make_stand_in_procs_weak ()
162 SCM old_tab = scm_stand_in_procs;
163 SCM new_tab = scm_make_weak_key_hash_table (scm_from_int (257));
165 new_tab = scm_internal_hash_fold ((Hash_closure_function) &redefine_keyval,
170 scm_stand_in_procs = new_tab;
173 ADD_SCM_INIT_FUNC(make_stand_in_procs_weak, make_stand_in_procs_weak);