2 group-interface.hh -- declare Group_interface
4 source file of the GNU LilyPond music typesetter
6 (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #ifndef GROUP_INTERFACE_HH
11 #define GROUP_INTERFACE_HH
13 #include "lily-proto.hh"
15 #include "lily-guile.hh"
19 rename to list interface?
23 Look at Score element ELT as thing which has a list property called
24 NAME_. Normally the list would contain Score_elements, but
25 sometimes it can be different things.
27 struct Group_interface
29 Score_element * elt_l_;
32 Group_interface (Score_element const*);
33 Group_interface (Score_element const*, String);
36 bool has_interface_b ();
37 void set_interface ();
38 void add_element (Score_element*);
41 Group_interface group (Score_element*);
42 Group_interface group (Score_element*, String);
45 Put all score elements of ELT's property called NAME into an array,
49 Group_interface__extract_elements (Score_element const *elt, T *, String name)
53 for (SCM s = elt->get_elt_property (name); gh_pair_p (s); s = gh_cdr (s))
56 assert (SMOB_IS_TYPE_B(Score_element,e));
57 Score_element* se = SMOB_TO_TYPE(Score_element, e);
58 arr.push (dynamic_cast<T*> (se));
68 #endif /* GROUP_INTERFACE_HH */