2 translator.hh -- declare Translator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 #include "global-ctor.hh"
14 #include "lily-proto.hh"
15 #include "virtual-methods.hh"
21 typedef void (*Translator_void_method_ptr)(Translator*);
23 #define TRANSLATOR_DECLARATIONS(NAME) \
26 VIRTUAL_COPY_CONSTRUCTOR (Translator, NAME); \
27 static SCM static_description_; \
28 virtual void fetch_precomputable_methods (Translator_void_method_ptr methods[]);\
29 virtual SCM static_translator_description () const; \
30 virtual SCM translator_description () const;
33 enum Translator_precompute_index {
34 START_TRANSLATION_TIMESTEP,
35 STOP_TRANSLATION_TIMESTEP,
38 TRANSLATOR_METHOD_PRECOMPUTE_COUNT,
42 #define PRECOMPUTED_VIRTUAL
46 Translate music into grobs.
56 bool must_be_last () const;
58 Context *context () const { return daddy_context_; }
60 Translator (Translator const &);
62 SCM internal_get_property (SCM symbol) const;
64 virtual Output_def *get_output_def () const;
65 virtual Translator_group *get_daddy_translator ()const;
66 virtual Moment now_mom () const;
68 virtual bool try_music (Music *req);
69 virtual void initialize ();
70 virtual void finalize ();
72 PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
73 PRECOMPUTED_VIRTUAL void start_translation_timestep ();
74 PRECOMPUTED_VIRTUAL void process_music ();
75 PRECOMPUTED_VIRTUAL void process_acknowledged ();
78 Score_context *get_score_context () const;
79 Global_context *get_global_context () const;
81 TRANSLATOR_DECLARATIONS (Translator);
82 DECLARE_SMOBS (Translator, dummy);
83 protected: // should be private.
84 Context *daddy_context_;
85 virtual void derived_mark () const;
87 friend class Context_def;
90 void add_translator (Translator *trans);
92 Translator *get_translator (SCM s);
93 DECLARE_UNSMOB (Translator, translator);
94 #endif // TRANSLATOR_HH