/*
- music-function.cc -- implement music_function
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "music-function.hh"
-#include "music.hh"
-
-static scm_t_bits music_function_tag;
+const char Music_function::type_p_name_[] = "ly:music-function?";
/* Print a textual represenation of the smob to a given port. */
-static int
-print_music_function (SCM b, SCM port, scm_print_state *)
+int
+Music_function::print_smob (SCM port, scm_print_state *)
{
- SCM value = SCM_CELL_OBJECT_1 (b);
-
scm_puts ("#<Music function ", port);
- scm_write (value, port);
+ scm_write (get_function (), port);
scm_puts (">", port);
/* Non-zero means success. */
return 1;
}
-
-LY_DEFINE (ly_make_music_function, "ly:make-music-function", 2, 0, 0,
- (SCM signature, SCM func),
- "Make a function to process music, to be used for the "
- "parser. @code{func} is the function, and @code{signature} describes "
- "Its arguments. @code{signature} is a list containing either "
- "@code{ly:music?} predicates or other type predicates.")
-{
- scm_set_object_property_x (func, ly_symbol2scm ("music-function-signature"),
- signature);
-
- SCM_RETURN_NEWSMOB (music_function_tag, func);
-}
-
-bool
-is_music_function (SCM music_function)
-{
- return (SCM_NIMP (music_function) && SCM_CELL_TYPE (music_function) == music_function_tag);
-}
-
-SCM
-get_music_function_transform (SCM music_function)
-{
- if (!is_music_function (music_function))
- return SCM_UNDEFINED;
-
- return SCM_CELL_OBJECT_1 (music_function);
-}
-
-static void
-init_music_function (void)
-{
- music_function_tag = scm_make_smob_type ("music-function", 0);
- scm_set_smob_mark (music_function_tag, scm_markcdr);
- scm_set_smob_print (music_function_tag, print_music_function);
-}
-
-ADD_SCM_INIT_FUNC (music_function_tag, init_music_function);