2 ly-module.cc -- implement guile module stuff.
4 source file of the GNU LilyPond music typesetter
6 (c) 2002--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "lily-guile.hh"
12 #include "ly-modules.hh"
13 #include "protected-scm.hh"
15 #define FUNC_NAME __FUNCTION__
17 static int module_count;
20 ly_init_anonymous_module (void * data)
22 scm_c_use_module ("lily");
25 Protected_scm anon_modules;
28 ly_make_anonymous_module ()
30 String s = "*anonymous-ly-" + to_string (module_count++) + "*";
31 SCM mod = scm_c_define_module (s.to_str0(), ly_init_anonymous_module, 0);
33 anon_modules = scm_cons (mod, anon_modules);
38 ly_clear_anonymous_modules ()
41 anon_modules = SCM_EOL;
43 for (; gh_pair_p (s) ; s = gh_cdr (s))
45 SCM tab= scm_c_make_hash_table (2);
50 SCM_STRUCT_DATA(gh_car(s))[scm_module_index_obarray] = (long unsigned int) tab;
54 #define FUNC_NAME __FUNCTION__
57 define_one_var (void * closure, SCM key, SCM val, SCM result)
59 SCM dest = (SCM) closure;
60 scm_module_define (dest, key, scm_variable_ref (val));
64 typedef SCM (*Hash_cl_func)();
67 ly_copy_module_variables (SCM dest, SCM src)
69 SCM_VALIDATE_MODULE (1, src);
71 SCM obarr= SCM_MODULE_OBARRAY(src);
72 scm_internal_hash_fold ((Hash_cl_func) &define_one_var, (void*) dest, SCM_EOL, obarr);
76 accumulate_symbol (void * closure, SCM key, SCM val, SCM result)
78 return scm_cons (key, result);
82 ly_module_symbols (SCM mod)
84 SCM_VALIDATE_MODULE (1, mod);
86 SCM obarr= SCM_MODULE_OBARRAY(mod);
87 return scm_internal_hash_fold ((Hash_cl_func) &accumulate_symbol, NULL, SCM_EOL, obarr);
91 entry_to_alist (void * closure, SCM key, SCM val, SCM result)
93 return scm_cons (scm_cons (key, scm_variable_ref (val)), result);
97 ly_module_to_alist (SCM mod)
99 SCM_VALIDATE_MODULE (1, mod);
102 SCM obarr= SCM_MODULE_OBARRAY(mod);
104 return scm_internal_hash_fold ((Hash_cl_func) &entry_to_alist, NULL, SCM_EOL, obarr);
108 Lookup SYM, but don't give error when it is not defined.
111 ly_module_lookup (SCM module, SCM sym)
113 #define FUNC_NAME __FUNCTION__
114 SCM_VALIDATE_MODULE (1, module);
116 return scm_sym2var (sym, scm_module_lookup_closure (module), SCM_BOOL_F);
119 SCM export_function ;
122 ly_export (SCM module, SCM namelist)
124 if (!export_function)
126 export_function = scm_permanent_object (scm_c_lookup ("module-export!"));
129 scm_call_2 (SCM_VARIABLE_REF (export_function),
134 ly_reexport_module (SCM mod)
136 ly_export (mod, ly_module_symbols (mod));