Move main function into `Effect Int`

pure-c / purec

C backend for PureScript

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Move main function into `Effect Int` #50

Closed felixSchl closed 3 years ago

felixSchl commented 5 years ago

Either:

mandate this for all main functions,
or detect at compile time based on the type of main (if that information is even available),
or by checking the return value at runtime: if NULL (implying Unit), return 0, else return purs_any_get_int(...) of result.

felixSchl commented 3 years ago

(3) has been implemented. Programs returning Unit return 0 and programs returning Int return the returned integer. Use --non-strict-main to avoid special handling altogether: the returned value is released and we return 0.