Location macro throws NPE for in-memory (virtual) source files

[vasilmkd]

Please read scala/scala3#20591 for the whole context.

Expanding the Location macro for in-memory source files throws a NullPointerException.

Exception occurred while executing macro expansion. java.lang.NullPointerException: Cannot invoke "java.nio.file.Path.toString()" because the return value of "scala.quoted.Quotes$reflectModule$SourceFileMethods.jpath(Object)" is null at munit.internal.MacroCompat$.locationImpl(MacroCompat.scala:18)

At the moment, this macro is written exactly the same as in the Scala 3 documentation.

Most likely, the macro implementation will have to be adjusted, for maximum compatibility.

[vasilmkd]

Here is a local reproduction of the issue.

scala/scala3#20591 (comment)