Implement applied constructor types #22543
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bishabosha
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Feb 6, 2025
| def f(x: Int): Int = x | ||
| def id[T](x: T): T = x | ||
| def idDependent(x: Any): x.type = x | ||
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What about constructors with mixed tracked and non-tracked parameters?
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Added some tests for those, but the current approach is: you have to write all parameters, but the non-tracked params won't influence the resulting type.
Co-authored-by: Kacper Korban <[email protected]>
- only type applied constructor types in Typer - handle multiple parameter lists - add tests for mixed tracked and not tracked parameters
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closes #22542
Introduce new syntax to make classes with
trackedparameterseasier to use. The new syntax is essentially the ability to use an application
of a class constructor as a type, we call such types applied constructor types.
With this new feature the following example compiles correctly and the type in
the comment is the resulting type of the applied constructor types.
Syntax change
A
SimpleTypecan now optionally be followed byParArgumentExprs.