Add oneof<...> type declarations - #71
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Currently, the parser cannot support explicit type declarations for variables of the form oneof<x, y, z>. This commit adds support for that to the typechecker and the resolver. Signed-off-by: innocentzero <1nn0c3n7z3r0@proton.me>
Signed-off-by: innocentzero <1nn0c3n7z3r0@proton.me>
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Currently, the parser cannot support explicit type declarations for variables of the form oneof<x, y, z>. This commit adds support for that to the typechecker and the resolver.
More importantly, we need to discuss semantics of oneof properly. Atm, the explicit declarations resolve
oneof<a>toato save unnecessary overhead. We can make this an error as well (why would anyone realistically writelet x: oneof<int>style declarations?). Apart from this,oneofalways expects type arguments and errors otherwise (a cursed implementation would be to havelet x: oneof<>typecheck tolet x: anyinstead, but again, do we want it?).