lily/include/translator-group.hh

   1 /*
   2   translator-group.hh -- declare Translator_group
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9
  10 #ifndef TRANSLATOR_GROUP_HH
  11 #define TRANSLATOR_GROUP_HH
  12
  13 #include "string.hh"
  14 #include "lily-proto.hh"
  15 #include "virtual-methods.hh"
  16 #include "translator.hh"
  17 #include "parray.hh"
  18 #include "smobs.hh"
  19
  20 // egcs
  21 typedef void (Translator::*Method_pointer) (void);
  22
  23 class Scheme_hash_table;
  24
  25
  26 /** Make some kind of Elements from Requests. Elements are made by
  27   hierarchically grouped Translators
  28   */
  29 class Translator_group : public virtual Translator {
  30
  31   Scheme_hash_table *properties_dict () const;
  32   int iterator_count_;
  33
  34   friend class Interpretation_context_handle;
  35 protected:
  36   ~Translator_group ();
  37 public:
  38   SCM add_translator (SCM, Translator*);
  39   void execute_single_pushpop_property (SCM prop, SCM sym, SCM val);
  40   SCM get_property (SCM name_sym) const;
  41   void set_property (String var_name, SCM value);
  42   void unset_property (SCM var_sym);
  43   void set_property (SCM var_sym, SCM value);
  44   Translator_group *where_defined (SCM name_sym) const;
  45
  46   String id_str_;
  47
  48   VIRTUAL_COPY_CONS (Translator);
  49   Translator_group (Translator_group const &);
  50   Translator_group ();
  51   void add_group_translator (Translator *trans_p);
  52
  53
  54   /// Score_register = 0, Staff_registers = 1, etc)
  55   Translator_group* ancestor_l (int l=1);
  56   int depth_i () const;
  57   bool is_bottom_translator_b () const;
  58   bool removable_b () const;
  59   void terminate_translator (Translator*r_l);
  60   Translator *remove_translator_p (Translator*trans_l);
  61   void check_removal ();
  62   // Translator *get_simple_translator (String) const;
  63   Translator_group *find_existing_translator_l (String n, String id);
  64   Translator_group *find_create_translator_l (String n, String id);
  65   Link_array<Translator_group> path_to_acceptable_translator (String alias, Music_output_def*) const;
  66
  67   Translator_group*get_default_interpreter ();
  68
  69 public:
  70   bool try_music_on_nongroup_children (Music *m);
  71
  72   virtual void do_announces ();
  73   virtual bool try_music (Music* req_l);
  74   virtual void stop_translation_timestep ();
  75   virtual void start_translation_timestep ();
  76   virtual void initialize ();
  77   virtual void finalize ();
  78   virtual void each (Method_pointer);
  79
  80 };
  81
  82 #endif // TRANSLATOR_GROUP_HH