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 /// Score_register = 0, Staff_registers = 1, etc)
60 Translator_group* get_ancestor (int l=1);
61 int get_depth () const;
62 bool is_bottom_translator_b () const;
63 bool is_removable () const;
64 void terminate_translator (Translator*r);
65 Translator *remove_translator (Translator*trans);
66 void check_removal ();
67 // Translator *get_simple_translator (String) const;
68 Translator_group *find_existing_translator (SCM context_name, String id);
69 Translator_group *find_create_translator (SCM context_name, String id, SCM ops);
70 Link_array<Translator_group> path_to_acceptable_translator (SCM alias,
71 Music_output_def*) const;
72 Translator_group*get_default_interpreter ();
75 bool try_music_on_nongroup_children (Music *m);
77 virtual void do_announces ();
78 virtual bool try_music (Music* req);
79 virtual void stop_translation_timestep ();
80 virtual void start_translation_timestep ();
81 virtual void initialize ();
82 virtual void finalize ();
83 virtual void each (Method_pointer);
87 bool melisma_busy (Translator* tr); // where to put this? --hwn
88 void apply_property_operations (Translator_group*tg, SCM pre_init_ops);
89 SCM names_to_translators (SCM namelist, Translator_group*tg);
91 #endif // TRANSLATOR_GROUP_HH