X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Ftranslator.hh;h=67b1e51bb1c23cf9744f9958c788ca1304cbabe6;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=0c791e51ec9f891e3c2593cd66af1d15605c0555;hpb=3e07faa176c300184b2e41d0dcfa779360519359;p=lilypond.git diff --git a/lily/include/translator.hh b/lily/include/translator.hh index 0c791e51ec..67b1e51bb1 100644 --- a/lily/include/translator.hh +++ b/lily/include/translator.hh @@ -3,31 +3,86 @@ source file of the GNU LilyPond music typesetter - (c) 1997--2004 Han-Wen Nienhuys + (c) 1997--2008 Han-Wen Nienhuys */ - #ifndef TRANSLATOR_HH #define TRANSLATOR_HH #include "global-ctor.hh" -#include "string.hh" #include "lily-proto.hh" #include "virtual-methods.hh" -#include "lily-guile.hh" -#include "input.hh" +#include "input.hh" // for error reporting #include "smobs.hh" +#include "std-vector.hh" +#include "protected-scm.hh" -#define get_property(x) internal_get_property(ly_symbol2scm(x)) +struct Acknowledge_information +{ + SCM symbol_; + Engraver_void_function_engraver_grob_info function_; +}; -#define TRANSLATOR_DECLARATIONS(NAME) \ +/* + Each translator class has a static list of listener records. Each + record makes one explains how to register one of the class's stream event + listeners to a context. +*/ +typedef struct translator_listener_record { + Listener (*get_listener_) (void *); + SCM event_class_; + struct translator_listener_record *next_; +} translator_listener_record; + +#define TRANSLATOR_DECLARATIONS(NAME) \ +private: \ + static translator_listener_record *listener_list_; \ + public: \ + NAME (); \ + VIRTUAL_COPY_CONSTRUCTOR (Translator, NAME); \ + static SCM static_description_; \ + static Drul_array > acknowledge_static_array_drul_; \ + virtual void fetch_precomputable_methods (Translator_void_method_ptr methods[]); \ + virtual SCM static_translator_description () const; \ + virtual SCM translator_description () const; \ + virtual Engraver_void_function_engraver_grob_info get_acknowledger (SCM sym) \ + { \ + return static_get_acknowledger (sym); \ + } \ + virtual Engraver_void_function_engraver_grob_info get_end_acknowledger (SCM sym) \ + { \ + return static_get_end_acknowledger (sym); \ + } \ + static Engraver_void_function_engraver_grob_info static_get_acknowledger (SCM sym); \ + static Engraver_void_function_engraver_grob_info static_get_end_acknowledger(SCM); \ +public: \ + virtual translator_listener_record *get_listener_list () const \ + { \ + return listener_list_; \ + } \ + /* end #define */ + +#define DECLARE_TRANSLATOR_LISTENER(m) \ public: \ - NAME (); \ - VIRTUAL_COPY_CONSTRUCTOR (Translator, NAME); \ - static SCM static_description_; \ - virtual SCM static_translator_description () const; \ - virtual SCM translator_description () const; +inline void listen_ ## m (Stream_event *); \ +/* Should be private */ \ +static void _internal_declare_ ## m (); \ +private: \ +static Listener _get_ ## m ## _listener (void *); \ +DECLARE_LISTENER (_listen_scm_ ## m); + +#define DECLARE_ACKNOWLEDGER(x) public : void acknowledge_ ## x (Grob_info); protected: +#define DECLARE_END_ACKNOWLEDGER(x) public : void acknowledge_end_ ## x (Grob_info); protected: + +enum Translator_precompute_index + { + START_TRANSLATION_TIMESTEP, + STOP_TRANSLATION_TIMESTEP, + PROCESS_MUSIC, + PROCESS_ACKNOWLEDGED, + TRANSLATOR_METHOD_PRECOMPUTE_COUNT, + }; /* Translate music into grobs. @@ -35,91 +90,67 @@ public: \ class Translator { void init (); - + +protected: + bool must_be_last_; + public: - Context * context () const { return daddy_context_; } - + bool must_be_last () const; + + Context *context () const { return daddy_context_; } + Translator (Translator const &); - void removal_processing (); SCM internal_get_property (SCM symbol) const; - - virtual Music_output_def *get_output_def () const; - virtual Translator_group* get_daddy_translator ()const; - virtual Moment now_mom () const; - virtual bool try_music (Music *req); - virtual void stop_translation_timestep (); - virtual void start_translation_timestep (); - virtual void initialize () ; - virtual void process_music (); - virtual void do_announces (); + + virtual Output_def *get_output_def () const; + virtual Translator_group *get_daddy_translator ()const; + virtual Moment now_mom () const; + + virtual void initialize (); virtual void finalize (); - - Score_context * get_score_context () const; - Global_context * get_global_context () const; - - TRANSLATOR_DECLARATIONS(Translator); - DECLARE_SMOBS (Translator, dummy); + + /*should maybe be virtual*/ + void connect_to_context (Context *c); + void disconnect_from_context (Context *c); + + void stop_translation_timestep (); + void start_translation_timestep (); + void process_music (); + void process_acknowledged (); + + Context *get_score_context () const; + Global_context *get_global_context () const; + + TRANSLATOR_DECLARATIONS (Translator); + DECLARE_SMOBS (Translator); + protected: // should be private. - Context * daddy_context_ ; - SCM simple_trans_list_; - friend class Context_def; - friend class Context; + Context *daddy_context_; + void protect_event (SCM ev); + virtual void derived_mark () const; + static void add_translator_listener (translator_listener_record **listener_list, translator_listener_record *r, Listener (*get_listener) (void *), const char *ev_class); + SCM static_translator_description (const char *grobs, + const char *desc, + translator_listener_record *listener_list, + const char *read, + const char *write) const; + + friend class Translator_group; }; +void add_translator (Translator *trans); + +Translator *get_translator (SCM s); +Moment get_event_length (Stream_event *s, Moment now); +Moment get_event_length (Stream_event *s); +DECLARE_UNSMOB (Translator, translator); + + +/* + This helper is only meaningful inside listen_* methods. +*/ +extern bool internal_event_assignment (Stream_event **old_ev, Stream_event *new_ev, const char *function); +#define ASSIGN_EVENT_ONCE(o,n) internal_event_assignment (&o, n, __FUNCTION__) + -/** - A macro to automate administration of translators. - */ -#define ADD_THIS_TRANSLATOR(T) \ -SCM T::static_description_ = SCM_EOL;\ -static void _ ## T ## _adder () {\ - T *t = new T;\ - T::static_description_ = t->static_translator_description ();\ - scm_permanent_object (T::static_description_);\ - add_translator (t);\ -}\ -SCM T::translator_description() const\ -{ \ - return static_description_;\ -}\ -ADD_GLOBAL_CTOR (_ ## T ## _adder); - - - - -#define ENTER_DESCRIPTION(classname,desc,grobs,accepted,acked,read,write) \ -ADD_THIS_TRANSLATOR (classname);\ -SCM \ -classname::static_translator_description () const \ -{ \ - SCM static_properties= SCM_EOL; \ - /* static_properties= acons (name ,gh_str02scm (Translator::name (self_scm ())), \ - static_properties_); \ - */ \ - static_properties= scm_acons (ly_symbol2scm ("grobs-created"), \ - parse_symbol_list (grobs), static_properties); \ - \ - static_properties= scm_acons (ly_symbol2scm ("description"), \ - scm_makfrom0str (desc), static_properties); \ - \ - static_properties= scm_acons (ly_symbol2scm ("interfaces-acked"), \ - parse_symbol_list (acked), static_properties); \ - static_properties= scm_acons (ly_symbol2scm ("events-accepted"), \ - parse_symbol_list (accepted), static_properties); \ - \ - static_properties= scm_acons (ly_symbol2scm ("properties-read"), \ - parse_symbol_list (read), static_properties); \ - \ - static_properties= scm_acons (ly_symbol2scm ("properties-written"), \ - parse_symbol_list (write), static_properties); \ - \ - return static_properties; \ -} - - - -void add_translator (Translator*trans); - -Translator*get_translator (SCM s); -DECLARE_UNSMOB(Translator,translator); #endif // TRANSLATOR_HH