Some synopsis code won't run

[grtodd]

Zydeco Nothing to report so far but I can't get the synopsis code from Zydeco::Manual::01_ClassesRolesEtc to run unless I change:

class Cow extends Animal with Milkable;

to the following:

class Cow {           
                   extends Animal;      
                   with Milkable;     
          } 

Could be due to fast moving dev, code churn or a missing dependency on my end. Anyway, great project! Glad to see something new picking up where the lure of the animal left off ;-)

[tobyink]

The issue was that roles can be followed by a list, like this:

class Widget with Size("large");

When this happens, Size is interpreted not just as a role, but as a role-generator — a package that can generate new roles on the fly. It passes the parameter "large" to the role generator, gets given a role back and applies that role to the Widget class. There's also class generators.

What I forgot was that parentheses are not the Perl operator for building lists; commas are. So parentheses are not required around lists. So your example was getting parsed like:

class Cow extends Animal( with Milkable );

That is, Animal was a class-generator getting passed with Milkable as its list.

I've changed the parsing for generators to require explicit parentheses now.

I'll try to get a new release out this evening.

(And yes, Moops + Kavorka is built on top of a pile of crack. Zydeco has more solid foundations, so will hopefully be more maintainable long term, even if it's way less tested right now.)

[tobyink]

Released 0.606

[grtodd]

Great explanation of the debug and fix, thanks. Or uhh (thanks).