2 translator-group.hh -- declare Translator_group
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #ifndef TRANSLATOR_GROUP_HH
11 #define TRANSLATOR_GROUP_HH
14 #include "lily-proto.hh"
15 #include "virtual-methods.hh"
16 #include "translator.hh"
21 typedef void (Translator::*Method_pointer) (void);
22 #define set_property(x,y) internal_set_property(ly_symbol2scm(x),y)
24 class Scheme_hash_table;
27 /** Make some kind of Elements from Events. Elements are made by
28 hierarchically grouped Translators
30 class Translator_group : public virtual Translator {
32 Scheme_hash_table *properties_dict () const;
35 friend class Interpretation_context_handle;
36 SCM add_translator (SCM, Translator*);
41 virtual SCM get_simple_trans_list ();
43 void execute_pushpop_property (SCM prop, SCM sym, SCM val);
44 SCM internal_get_property (SCM name_sym) const;
45 SCM properties_as_alist () const;
47 void unset_property (SCM var_sym);
48 void internal_set_property (SCM var_sym, SCM value);
49 Translator_group *where_defined (SCM name_sym) const;
52 String context_name () const;
53 VIRTUAL_COPY_CONS (Translator);
54 Translator_group (Translator_group const &);
56 void add_fresh_group_translator (Translator *trans);
57 void add_used_group_translator (Translator *trans);
59 int get_depth () const;
60 bool is_bottom_translator_b () const;
61 bool is_removable () const;
62 void terminate_translator (Translator*r);
63 Translator *remove_translator (Translator*trans);
64 void check_removal ();
65 Translator_group *find_existing_translator (SCM context_name, String id);
66 Translator_group *find_create_translator (SCM context_name, String id, SCM ops);
67 Link_array<Translator_group> path_to_acceptable_translator (SCM alias,
68 Music_output_def*) const;
69 Translator_group*get_default_interpreter ();
72 bool try_music_on_nongroup_children (Music *m);
74 virtual void do_announces ();
75 virtual bool try_music (Music* req);
76 virtual void stop_translation_timestep ();
77 virtual void start_translation_timestep ();
78 virtual void initialize ();
79 virtual void finalize ();
80 virtual void each (Method_pointer);
84 bool melisma_busy (Translator* tr); // where to put this? --hwn
85 void apply_property_operations (Translator_group*tg, SCM pre_init_ops);
86 SCM names_to_translators (SCM namelist, Translator_group*tg);
88 #endif // TRANSLATOR_GROUP_HH