along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
+#include "context.hh"
#include "translator.hh"
-
+#include "lily-imports.hh"
#include "international.hh"
#include "scm-hash.hh"
#include "warn.hh"
#include "protected-scm.hh"
-/*
- should delete these after exit.
-*/
+SCM
+Translator_creator::call (SCM ctx)
+{
+ return (allocate_ (LY_ASSERT_SMOB (Context, ctx, 1)))->unprotect ();
+}
Protected_scm global_translator_dict;
+Protected_scm global_translator_dict_rev;
LY_DEFINE (get_all_translators, "ly:get-all-translators", 0, 0, 0, (),
"Return a list of all translator objects that may be"
}
void
-add_translator (Translator *t)
+add_translator_creator (SCM creator, SCM name, SCM description)
{
Scheme_hash_table *dict = unsmob<Scheme_hash_table> (global_translator_dict);
if (!dict)
{
global_translator_dict = Scheme_hash_table::make_smob ();
+ global_translator_dict_rev =
+ scm_make_weak_key_hash_table (scm_from_int (119));
dict = unsmob<Scheme_hash_table> (global_translator_dict);
}
+ dict->set (name, creator);
+ scm_hashq_set_x (global_translator_dict_rev, creator, scm_cons (name, description));
+}
- SCM k = ly_symbol2scm (t->class_name ());
- dict->set (k, t->unprotect ());
+LY_DEFINE (ly_translator_name, "ly:translator-name",
+ 1, 0, 0, (SCM creator),
+ "Return the type name of the translator definition @var{creator}."
+ " The name is a symbol.")
+{
+ SCM res = global_translator_dict_rev.is_bound ()
+ ? scm_hashq_ref (global_translator_dict_rev, creator, SCM_BOOL_F)
+ : SCM_BOOL_F;
+ SCM_ASSERT_TYPE (scm_is_pair (res),
+ creator, SCM_ARG1, __FUNCTION__, "translator definition");
+ return scm_car (res);
+}
+
+LY_DEFINE (ly_translator_description, "ly:translator-description",
+ 1, 0, 0, (SCM creator),
+ "Return an alist of properties of translator definition @var{creator}.")
+{
+ SCM res = global_translator_dict_rev.is_bound ()
+ ? scm_hashq_ref (global_translator_dict_rev, creator, SCM_BOOL_F)
+ : SCM_BOOL_F;
+ SCM_ASSERT_TYPE (scm_is_pair (res),
+ creator, SCM_ARG1, __FUNCTION__, "translator definition");
+ return scm_cdr (res);
+}
+
+LY_DEFINE (ly_register_translator, "ly:register-translator",
+ 2, 1, 0, (SCM creator, SCM name, SCM description),
+ "Register a translator @var{creator} (usually a descriptive"
+ " alist or a function/closure returning one when given a"
+ " context argument) with the given symbol @var{name} and"
+ " the given @var{description} alist.")
+{
+ SCM_ASSERT_TYPE (ly_is_procedure (creator) || scm_is_pair (creator),
+ creator, SCM_ARG1, __FUNCTION__, "translator creator");
+ LY_ASSERT_TYPE (ly_is_symbol, name, 2);
+ if (SCM_UNBNDP (description))
+ description = SCM_EOL;
+ else
+ LY_ASSERT_TYPE (ly_is_list, description, 3);
+ add_translator_creator (creator, name, description);
+ return SCM_UNSPECIFIED;
}
-Translator *
-get_translator (SCM sym)
+SCM
+get_translator_creator (SCM sym)
{
SCM v = SCM_BOOL_F;
Scheme_hash_table *dict = unsmob<Scheme_hash_table> (global_translator_dict);
if (scm_is_false (v))
{
warning (_f ("unknown translator: `%s'", ly_symbol2string (sym).c_str ()));
- return 0;
}
- return unsmob<Translator> (v);
+ return v;
}