release: 0.1.43

[lilypond.git] / lily / include / translator.hh

diff --git a/lily/include/translator.hh b/lily/include/translator.hh
index b1e333a59adc39feaee2d7dc3a44dc04f116aa3c..c2ddcb131ab901eda6f0f4c35392d332cfb50cbb 100644 (file)
--- a/lily/include/translator.hh
+++ b/lily/include/translator.hh
@@ -13,26 +13,111 @@
 #include "string.hh"
 #include "lily-proto.hh"
 #include "virtual-methods.hh"
+#include "scalar.hh"
+#include "dictionary.hh"
+#include "parray.hh"
+#include "input.hh"
 
-class Translator {
+#define TRANSLATOR_CLONE(c)    VIRTUAL_COPY_CONS(c, Translator)
+
+/** Make some kind of #Element#s from Requests. Elements are made by
+  hierarchically grouped #Translator#s
+  */
+class Translator : public Input {
+  Dictionary<Scalar> properties_dict_;
 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(){}
-    NAME_MEMBERS();
-    Translator();
-    virtual Translator *get_default_interpreter()=0;
+  Music_output_def * output_def_l_;
+  String  type_str_;
+
+  bool is_alias_b (String) const;
+  
+
+  DECLARE_MY_RUNTIME_TYPEINFO;  
+  TRANSLATOR_CLONE(Translator);
+  Translator (Translator const &);
+  Translator ();
+  virtual ~Translator ();
+  
+  Translator_group * daddy_trans_l_ ;
+ 
+  void print () const;
+  
+  /**
+    try to fit the request in this engraver
+
+    @return
+    false: not noted,  not taken.
+
+    true: request swallowed. Don't try to put the request elsewhere.
+
+    */
+  bool try_request (Request*);
+  void pre_move_processing();
+  void add_processing ();
+  void creation_processing ();
+  void process_requests();
+  void post_move_processing();
+  void removal_processing();
+  /**
+    ask daddy for a feature
+    */
+  Scalar get_property (String type_str);
+  void set_property (String var_name, Scalar value);
+  Music_output_def *output_def_l () const;
+  
+  virtual Moment now_moment () const;  
+  virtual Engraver *engraver_l () { return 0; }
+  virtual Performer *performer_l() { return 0; }
+  virtual Translator_group * group_l () { return 0; }
+
+protected:
+   enum { 
+    ORPHAN,
+    VIRGIN,
+    CREATION_INITED,
+    MOVE_INITED,
+    ACCEPTED_REQS,
+    PROCESSED_REQS,
+    ACKED_REQS,
+    MOVE_DONE
+  } status;
+
+  /*    
+       @see{try_request}
+       Default: always return false
+       */
+  virtual void do_add_processing ();
+  virtual bool do_try_request (Request *req_l);
+  virtual void do_print () const;
+  virtual void do_pre_move_processing(){}
+  virtual void do_post_move_processing(){}
+  virtual void do_process_requests () {}
+  virtual void do_creation_processing() {}
+  virtual void do_removal_processing() {}
 };
 
+/**
+  A macro to automate administration of translators.
+ */
+#define ADD_THIS_TRANSLATOR(c)                         \
+struct c ## init {                                     \
+   static Translator *ctor ()\
+  {\
+        Translator *t = new c;\
+        t-> type_str_ = c::static_name ();\
+        return t;\
+    }\
+    c ## init() {                                      \
+       add_constructor (ctor);\
+    }                                                  \
+} _ ## c ## init;
+
+typedef Translator *(*Translator_ctor) ();
+
+extern Dictionary<Translator*> *global_translator_dict_p;
+void add_translator (Translator*trans_p);
+void add_constructor (Translator_ctor ctor);
+
+Translator*get_translator_l (String s);
+
 #endif // TRANSLATOR_HH