Hi Trevor,
On Mon, Dec 15, 2008 at 2:12 PM, Trevor Bača <trevorb...@gmail.com> wrote:
>
> * OK, so based on this understanding, can somebody please correct my
> understanding of the parsing (not the iteration, just the parsing) of the
> following expression (which is the same as my original example #2):
>
> {
> \new Voice {
> c'8 c'8 c'8 c'8
> }
> d'8 d'8 d'8 d'8
> }
>
> If I'm understanding how the parser works, then what should result here is a
> music expression that looks like this:
>
> Global
> V
> \new Score
> V
> \new Staff
> V
> \new Voice
> V
> Sequential
> V
> \new Voice, d'8, d'8, d'8, d'8
> V
> Sequential
> V
> c'8, c'8, c'8, c'8
>
>
> If I'm counting correctly, that's 15 total nodes in the expression tree.
> Eight atomic nodes and seven internal nodes. The Global, \new Score, \new
> Staff and the first \new Voice are all created implicitly.
>
> I know that the next part in the process is iteration. But I want to stop
> and check my understanding here: am I understanding the output of the parser
> correctly at this point?
I'm pretty sure this would be the result *after* iteration.
The parser output can be visualized with \displayMusic. So your
example would look like this, using your convention above:
Sequential
V V
\new Voice d'8, d'8, d'8, d'8
V
Sequential
V
c'8, c'8, c'8, c'8
After this, the iteration process starts, proceeding moment by moment
and making sure everything is placed in the correct context. Then you
would end up with a tree that looks like the one you posted. I
believe the implicit creation of contexts happens during iteration.
(I could be completely wrong, but it makes sense to me).
-Patrick
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