The problem with having multiple prototypes for the same function is that Perl doesn't know how to dispatch on the prototype. (An idea from C++ which people have mixed opinions on.)

I would use intuitive solution 2 and use the sub keyword to generate closures on the fly. That is instead of typing 

my_func {block1} {block2} $arg;

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you would type: 
my_func(sub {block1}, sub {block2}, $arg);

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Now if that is not the syntax you want, you can try (I have not so no idea how hard this will be) to play games with Filter::Util::Call to define a custom language. Similarly you could do something like use Parse::RecDescent to parse the configuration, generate equivalent Perl code from slight markups, and then eval that.

Too get a sense of how far you can go with those ideas, take a look at Lingua::Romana::Perligata (but don't blame me if you lose your sanity)...

In reply to Re (tilly) 1: Polymorphic prototypes? (creating new syntax) by tilly
in thread Polymorphic prototypes? (creating new syntax) by kaatunut

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