#include "music-iterator.hh"
#include "protected-scm.hh"
-/*
-
- This is a lookahead list for grace notes.
-
- { ... X \grace Y Z ... }
-
- normally, the ending of X is the start of Z. In case of a grace
- note, we take off a little at the end of X. What is stored: START
- (start point of X), LENGTH (length of X), GRACE_START (start_music
- of Y), and the next fixup element.
-
- This is also done for nested musics, i.e.
-
- voiceA = \notes { \grace b16 c'2 }
- voiceB = \notes { c'2 \voiceA }
-
- the iterator for voiceB will contain a fixup entry with (START=0/1,
- LENGTH=2/1, GRACE_START=(0G-1/16) )
-
- Graces at the start of a sequential music iterator are handled
- by initting here_mom_ with Music::start_music (); no fixups are needed.
-
-*/
-struct Grace_fixup
-{
- Moment start_;
- Moment length_;
-
- Rational grace_start_;
- Grace_fixup *next_;
-};
/** Sequential_music iteration: walk each element in turn, and
construct an iterator for every element.
void next_grace_fixup ();
private:
+ Moment last_mom_;
Moment here_mom_;
- SCM list_;
SCM cursor_;
Grace_fixup * grace_fixups_;
- virtual void descend_to_child ();
};
#endif /* SEQUENTIAL_ITERATOR_HH */