Add Union(X, Y) to denote a union type X | Y. Fixes #2659
#2727
+88
−15
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Would splats work here? |
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Don't merge, I have a better (much powerful) idea. Splats should be allowed in any generic instantiation, really good idea :-) |
Merged
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This makes the parser produce a
UnionAST node when findingUnion(X, Y). It's a special case, but with this we can now talk about any type using a name (this was the only missing type)