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10.12.1 Useful methods for information processing
An engraver inherits the following public methods from the Translator base class, which can be used to process listened events and acknowledged grobs:
-
virtual void initialize () -
void start_translation_timestep () -
void process_music () -
void process_acknowledged () -
void stop_translation_timestep () -
virtual void finalize ()
These methods are listed in order of translation time, with
initialize () and finalize () bookending the whole
process. initialize () can be used for one-time initialization
of context properties before translation starts, whereas
finalize () is often used to tie up loose ends at the end of
translation: for example, an unterminated spanner might be completed
automatically or reported with a warning message.
In addition, there is a derived_mark method that should be
used to protect Scheme members from garbage collection.
See Garbage collection for dummies.