#include "callback.hh"
#include "input.hh" // for error reporting
#include "smobs.hh"
+#include "stream-event.hh"
#include "std-vector.hh"
#include "protected-scm.hh"
+// The Translator_creator class is only for translators defined in C.
+// Its elements are callable entities taking a context argument and
+// returning a corresponding translator.
+//
+// Other translator-creating entities may be alists and functions returning
+// such alists. Information for those, such as created grobs/properties
+// is attached via object properties.
+
+// Smob rather than Simple_smob since we want an entity for
+// property lookup.
+
+class Translator_creator : public Smob<Translator_creator>
+{
+ Translator_creator (Translator_creator const &); // don't define
+ Translator * (*allocate_)(Context *);
+ template <class T>
+ static Translator *allocate (Context *ctx);
+
+ Translator_creator (Translator * (*allocate)(Context *))
+ : allocate_(allocate)
+ {
+ smobify_self ();
+ }
+public:
+ // This is stupid, but constructors cannot have explicit template
+ // argument lists.
+ template <class T>
+ static Translator_creator *alloc()
+ {
+ return new Translator_creator(&allocate<T>);
+ }
+ SCM call (SCM ctx);
+ LY_DECLARE_SMOB_PROC (&Translator_creator::call, 1, 0, 0);
+};
+
+template <class T> Translator *
+Translator_creator::allocate (Context *ctx)
+{
+ return new T(ctx);
+}
+
#define TRANSLATOR_FAMILY_DECLARATIONS(NAME) \
public: \
- VIRTUAL_COPY_CONSTRUCTOR (Translator, NAME); \
+ DECLARE_CLASSNAME (NAME); \
virtual void fetch_precomputable_methods (SCM methods[]); \
DECLARE_TRANSLATOR_CALLBACKS (NAME); \
- TRANSLATOR_INHERIT (Translator) \
+ TRANSLATOR_INHERIT (Translator); \
/* end #define */
#define TRANSLATOR_INHERIT(BASE) \
- using BASE::method_finder; \
- using BASE::ack_finder;
+ using BASE::method_finder
#define DECLARE_TRANSLATOR_CALLBACKS(NAME) \
template <void (NAME::*mf)()> \
- static SCM method_finder () { return method_find_base<NAME, mf> (); } \
- template <void (NAME::*callback)(Grob_info)> \
- static SCM ack_finder () { return ack_find_base<NAME, callback> (); } \
+ static SCM method_finder () \
+ { \
+ return Callback0_wrapper::make_smob<NAME, mf> (); \
+ } \
+ template <void (NAME::*mf)(Stream_event *)> \
+ static SCM method_finder () \
+ { \
+ return Callback_wrapper::make_smob<trampoline<NAME, mf> > (); \
+ } \
+ template <void (NAME::*mf)(Grob_info)> \
+ static SCM method_finder () { \
+ return Callback2_wrapper::make_smob<trampoline <NAME, mf> > (); \
+ } \
/* end #define */
/*
public: \
TRANSLATOR_FAMILY_DECLARATIONS (NAME); \
static Drul_array<Protected_scm> acknowledge_static_array_drul_; \
- static SCM static_description_; \
static Protected_scm listener_list_; \
static SCM static_get_acknowledger (SCM sym, Direction start_end); \
virtual SCM get_acknowledger (SCM sym, Direction start_end) \
return static_get_acknowledger (sym, start_end); \
} \
public: \
- NAME (); \
+ NAME (Context *); \
static void boot (); \
- virtual SCM static_translator_description () const; \
- virtual SCM translator_description () const; \
+ static SCM static_translator_description (); \
virtual SCM get_listener_list () const \
{ \
return listener_list_; \
public:
int print_smob (SCM, scm_print_state *) const;
SCM mark_smob () const;
- static const char type_p_name_[];
+ static const char * const type_p_name_;
virtual ~Translator ();
-private:
- void init ();
-public:
Context *context () const { return daddy_context_; }
- Translator ();
- Translator (Translator const &);
+protected:
+ Translator (Context *);
+private:
+ Translator (Translator const &); // not copyable
+public:
SCM internal_get_property (SCM symbol) const;
Global_context *get_global_context () const;
DECLARE_CLASSNAME (Translator);
- virtual Translator *clone () const = 0;
+
virtual void fetch_precomputable_methods (SCM methods[]) = 0;
virtual SCM get_listener_list () const = 0;
- virtual SCM translator_description () const = 0;
virtual SCM get_acknowledger (SCM sym, Direction start_end) = 0;
protected: // should be private.
return SCM_UNSPECIFIED;
}
- template <class T, void (T::*mf)()>
- static SCM
- method_find_base () { return Callback0_wrapper::make_smob<T, mf> (); }
-
// Fallback for non-overriden callbacks for which &T::x degrades to
// &Translator::x
template <void (Translator::*)()>
static SCM
method_finder () { return SCM_UNDEFINED; }
- // Overriden in Engraver.
- template <class T, void (T::*callback)(Grob_info)>
- static SCM
- ack_find_base () { return SCM_UNDEFINED; }
-
- template <void (Translator::*)(Grob_info)>
- static SCM
- ack_finder () { return SCM_UNDEFINED; }
-
virtual void derived_mark () const;
static SCM event_class_symbol (const char *ev_class);
- SCM static_translator_description (const char *grobs,
- const char *desc,
- SCM listener_list,
- const char *read,
- const char *write) const;
+ static SCM
+ static_translator_description (const char *grobs,
+ const char *desc,
+ SCM listener_list,
+ const char *read,
+ const char *write);
friend class Translator_group;
};
-void add_translator (Translator *trans);
-
-Translator *get_translator (SCM s);
-
SCM
generic_get_acknowledger (SCM sym, SCM ack_hash);
+void add_translator_creator (SCM creator, SCM name, SCM description);
+
+SCM get_translator_creator (SCM s);
Moment get_event_length (Stream_event *s, Moment now);
Moment get_event_length (Stream_event *s);
projects / lilypond.git / blobdiff