1 #include "music-function.hh"
3 LY_DEFINE (ly_music_function_p, "ly:music-function?", 1, 0, 0,
5 "Is @var{x} an @code{music-function}?")
7 return is_music_function (x) ? SCM_BOOL_T : SCM_BOOL_F;
10 LY_DEFINE (ly_music_function_extract, "ly:music-function-extract", 1, 0, 0,
12 "Return the Scheme function inside @var{x}")
14 SCM_ASSERT_TYPE(is_music_function (x), x, SCM_ARG1, __FUNCTION__,
17 return SCM_CELL_OBJECT_1(x);
20 LY_DEFINE (ly_make_music_function, "ly:make-music-function", 2, 0, 0,
21 (SCM signature, SCM func),
22 "Make a function to process music, to be used for the "
23 "parser. @code{func} is the function, and @code{signature} describes "
24 "Its arguments. @code{signature} is a list containing either "
25 "@code{ly:music?} predicates or other type predicates.")
27 SCM_ASSERT_TYPE(ly_is_procedure (func), func, SCM_ARG1, __FUNCTION__, "function");
28 return make_music_function (signature, func);