Compile-Time Memoization of Pegged-Generated Parser

["Nordlöw" via Digitalmars-d-learn]

On Wednesday, 26 November 2014 at 22:31:04 UTC, Nordlöw wrote:
> source/app.d(63): Error: no identifier for declarator fileWrites
> source/app.d(63): Error: Declaration expected, not '~='
> source/app.d(64): Error: no identifier for declarator fileWrites
> source/app.d(64): Error: Declaration expected, not '~='
>
> Have I missed something?
>
> Destroy!

Update: I guess this means D doesn't allow any statements in 
global scope. Can/Should I instead use some compile-time 
reflection to get list of parser strings that should be cached to 
disk? I guess if I wrap the path-parser-string-pair in a struct, 
say CachingPeggedParser, defined in global scope I could get a 
list of all the enum instances of this struct and do something 
with these in module constructor right?

Please tell me if this approach is unneccessary complicated!