Re: Yet Another music macro proposal

[Bertalan Fodor]

Well, I'm a bit scared.
It would be very valuable, if not only lilypond would be the only parser 
on the world which can parse a ly file.
For example I had a very hard time to create my preliminary java parser, 
because lilypond's syntax is so free and so dynamic (the language itself 
can be redefined in the source file), that it is almost impossible to 
write another parser.
So I see the second benefit as a backdraw, unless we have a way to 
"export" the structure to other representations.

Bert

> Some benefits:
> - It will be easy to make \relative a music macro, by defining relative as a 
> Scheme macro.
> - The parser will be reduced to a thin layer of syntactic sugar, so a large 
> portion of parser.yy can be moved to scheme. Application of music functions 
> and dereferencing of variables is completely outsourced to guile.
> - For those who want to do programming using lily syntax, it will be easy to 
> export Scheme functions and macros to the lily parser at runtime. This will 
> probably reduce the number of feature requests that come to our mailing 
> lists.
>
>