Question about "sourcefile"

[Joseph D. Darcy]

Hi Archie,

Without actually checking if this is the case, if "sourcefile" could 
also mean the class file a type was constructed from, then nested types 
would have a different sourcefile field than the top-level type.

HTH,

-Joe

On 1/30/2025 8:18 AM, Archie Cobbs wrote:
> In JavaCompiler.java, there is code that looks like this:
>
> JavaFileObject prev = log.useSource(*env.enclClass.sym.sourcefile != 
> null ?
> env.enclClass.sym.sourcefile :
> env.toplevel.sourcefile*);
>         try {
>             ... do something ...
>         } finally {
> log.useSource(prev);
>         }
>
> I don't understand why the boldface part is needed. How would it ever 
> be possible for a class A to have an enclosing class B that exists in 
> a different source file?
>
> Put another way, isn't env.toplevel.sourcefile always the source file 
> that corresponds to any class being compiled?
>
> Thanks for any clarifications.
>
> -Archie
>
> -- 
> Archie L. Cobbs
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