Resolver returns non-equal instances of the same declaration.

[bcorso]

In KSP1, all instance of a KSDeclaration for the same declaration were equal (this is a similar to the expectation in javac for Element instances).

However, in KSP2 we can get two different (non-equal) instances for the same declaration depending on if we get the instance using Resolver#getClassDeclarationByName() or Resolver#getSymbolsWithAnnotation(), e.g. suppose we have:

@MyAnnotation class MyClass

And the following processor:

  override fun process(resolver: Resolver): List<KSAnnotated> {
    val declaration1 = resolver.getSymbolsWithAnnotation("MyAnnotation").single()
    val declaration2 = resolver.getClassDeclarationByName( resolver.getKSNameFromString("MyClass"))!!
    println("declaration1.equals(declaration2): ${declaration1.equals(declaration2)}")
    return listOf()
  }

This results in:

// KSP1:
declaration1.equals(declaration2): true

// KSP2:
declaration1.equals(declaration2): false

[bcorso]

Update: Looks like this issue is specific to declarations in java sources (declarations from kotlin sources seem to work fine).

[ting-yuan]

Filed an upstream bug and working on workarounds.