source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-
#ifndef TRANSLATOR_HH
#define TRANSLATOR_HH
-#include "string.hh"
+#include "global-ctor.hh"
+#include "std-string.hh"
#include "lily-proto.hh"
#include "virtual-methods.hh"
+#include "input.hh"
+#include "smobs.hh"
+#include "std-vector.hh"
+
+struct Acknowledge_information
+{
+ SCM symbol_;
+ Engraver_void_function_engraver_grob_info function_;
+};
+
+#define TRANSLATOR_DECLARATIONS(NAME) \
+ public: \
+ NAME (); \
+ VIRTUAL_COPY_CONSTRUCTOR (Translator, NAME); \
+ static SCM static_description_; \
+ static vector<Acknowledge_information> acknowledge_static_array_; \
+ 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); \
+ } \
+ static Engraver_void_function_engraver_grob_info static_get_acknowledger (SCM sym);
+
+#define DECLARE_ACKNOWLEDGER(x) public : void acknowledge_ ## 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.
+*/
+class Translator
+{
+ void init ();
+
+protected:
+ bool must_be_last_;
-class Translator {
public:
- String id_str_;
-
- int iterator_count_;
-
- virtual Global_translator *global_l() { return 0; }
-
- /// Score_register = 0, Staff_registers = 1, etc)
- virtual void print()const;
- virtual int depth_i()const=0;
- virtual bool is_bottom_engraver_b() const { return false; }
- virtual bool try_request(Request*);
- virtual Translator *find_get_translator_l(String name, String id)=0;
- virtual Translator *ancestor_l(int l=1)=0;
- virtual ~Translator(){}
- DECLARE_MY_RUNTIME_TYPEINFO;
- Translator();
- virtual Translator *get_default_interpreter()=0;
+ bool must_be_last () const;
+
+ Context *context () const { return daddy_context_; }
+
+ Translator (Translator const &);
+
+ SCM internal_get_property (SCM symbol) const;
+
+ virtual 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 initialize ();
+ virtual void finalize ();
+
+ void stop_translation_timestep ();
+ void start_translation_timestep ();
+ void process_music ();
+ void process_acknowledged ();
+
+ Score_context *get_score_context () const;
+ Global_context *get_global_context () const;
+
+ TRANSLATOR_DECLARATIONS (Translator);
+ DECLARE_SMOBS (Translator, dummy);
+
+protected: // should be private.
+ Context *daddy_context_;
+ virtual void derived_mark () const;
+
+ friend class Context_def;
+ friend class Context;
};
+void add_translator (Translator *trans);
+Translator *get_translator (SCM s);
+DECLARE_UNSMOB (Translator, translator);
#endif // TRANSLATOR_HH