Generic records produce code with `rawtypes` and `unchecked` warnings

[Dave Schoutens]

At work, we are making great use of your library. Thanks!

That said, we introduced our first record using generics the other day, and found the generated Builder class to suffer from a few javac warnings, namely unchecked and rawtypes. We have a very low tolerance for compiler warnings, so this blocks us from using @RecordBuilder for these types.

We use JDK 17

Minimal example:

@RecordBuilder
public record Foo<T>(List<T> items) {}

Problematic generated code snippets:

// FooBuilder

@Generated("io.soabase.recordbuilder.core.RecordBuilder")
@Override
public boolean equals(Object o) {
    return (this == o) || ((o instanceof FooBuilder r)    // <- javac flags [rawtypes] warning here
            && Objects.equals(items, r.items));
}

// ...

@Generated("io.soabase.recordbuilder.core.RecordBuilder")
default FooBuilder<T> with() {
    return new FooBuilder(items());  // <- javac flags [rawtypes] and [unchecked] warnings here
}

It would be ideal if equals() could appease the compiler with (o instanceof FooBuilder<?> r) and with() could similarly with new FooBuilder<>(items()).

Barring that, perhaps a @SuppressWarnings({"unchecked","rawtypes"}) on these methods or on the class.