source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#ifndef TRANSLATOR_HH
#define TRANSLATOR_HH
-
+#include "global-ctor.hh"
#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 {
+/** Make some kind of #Element#s from Requests. Elements are made by
+ hierarchically grouped #Translator#s
+ */
+class Translator : public Input {
public:
- String id_str_;
+ Music_output_def * output_def_l_;
+ String type_str_;
+
+ virtual const char *name() const;
+ bool is_alias_b (String) const;
- 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;
+ VIRTUAL_COPY_CONS(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_music (Music*);
+ 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
+ */
+ Music_output_def *output_def_l () const;
+ Scalar get_property (String, Translator_group **) const;
+ virtual Moment now_mom () const;
+
+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_music (Music *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(T) \
+static void _ ## T ## _adder () {\
+ T *t = new T;\
+ t->type_str_ = classname (t);\
+ add_translator (t);\
+}\
+ADD_GLOBAL_CTOR(_ ## T ## _adder);
+
+
+
+extern Dictionary<Translator*> *global_translator_dict_p;
+void add_translator (Translator*trans_p);
+
+Translator*get_translator_l (String s);
+
#endif // TRANSLATOR_HH