#include "global-ctor.hh"
#include "lily-proto.hh"
#include "virtual-methods.hh"
+#include "callback.hh"
#include "input.hh" // for error reporting
#include "smobs.hh"
#include "std-vector.hh"
public: \
VIRTUAL_COPY_CONSTRUCTOR (Translator, NAME); \
static Drul_array<vector<Acknowledge_information> > acknowledge_static_array_drul_; \
- virtual void fetch_precomputable_methods (Callback methods[]); \
- static Grob_info_callback static_get_acknowledger (SCM sym); \
- static Grob_info_callback static_get_end_acknowledger(SCM); \
- virtual Grob_info_callback get_acknowledger (SCM sym) \
+ virtual void fetch_precomputable_methods (SCM methods[]); \
+ DECLARE_TRANSLATOR_CALLBACKS (NAME); \
+ TRANSLATOR_INHERIT (Translator) \
+ static SCM static_get_acknowledger (SCM sym); \
+ static SCM static_get_end_acknowledger(SCM); \
+ virtual SCM get_acknowledger (SCM sym) \
{ \
return static_get_acknowledger (sym); \
} \
- virtual Grob_info_callback get_end_acknowledger (SCM sym) \
+ virtual SCM get_end_acknowledger (SCM sym) \
{ \
return static_get_end_acknowledger (sym); \
} \
/* end #define */
+#define TRANSLATOR_INHERIT(BASE) \
+ using BASE::method_finder; \
+ using BASE::ack_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> (); } \
+ /* end #define */
+
/*
Each translator class has a static alist of event class symbols
mapping to callbacks that are called with a translator instance and
*/
#define TRANSLATOR_DECLARATIONS(NAME) \
- TRANSLATOR_FAMILY_DECLARATIONS(NAME) \
+ public: \
+ TRANSLATOR_FAMILY_DECLARATIONS (NAME); \
static SCM static_description_; \
static Protected_scm listener_list_; \
public: \
class Translator : public Smob<Translator>
{
public:
- // We don't make Grob_info_callback specific to Engraver since we
- // otherwise get into a circular mess with regard to the definitions
- // as the timing of Engraver is exercised from within Translator
- typedef void (Translator::*Grob_info_callback) (Grob_info);
- typedef void (Translator::*Callback) (void);
int print_smob (SCM, scm_print_state *) const;
SCM mark_smob () const;
static const char type_p_name_[];
public:
Context *context () const { return daddy_context_; }
+ Translator ();
Translator (Translator const &);
SCM internal_get_property (SCM symbol) const;
Context *get_score_context () const;
Global_context *get_global_context () const;
- TRANSLATOR_DECLARATIONS (Translator);
+ 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) = 0;
+ virtual SCM get_end_acknowledger (SCM sym) = 0;
protected: // should be private.
Context *daddy_context_;
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,
struct Acknowledge_information
{
SCM symbol_;
- Translator::Grob_info_callback function_;
+ SCM function_;
Acknowledge_information ()
{
symbol_ = SCM_EOL;
- function_ = 0;
+ function_ = SCM_UNDEFINED;
}
};