If proto file doesn't have 'package' field (that is correct case) - CastGenerateor will generate code that have no chances to compile

[nikomoravec]

CastGenerator.generateCast method calls outType.toString() line 106, If CppType has null namespaces - toString() method returns 'null::TypeName'

[nikomoravec]

This issue comes from ProtoProcessor initialization, line 106
this.packageNamespace = new CppNamespace(parse.packageName());
If package is empty - packageNamespace will be null

[nikomoravec]

Cornerstone have strong dependency on package name. This field are private and locates in third party library called 'squareup.wire.schema'. I think we should not use tricks like reflection or unsafe for set this field to ProtoFileElement and just make package field necessarily

[RChehowski]

Why, no, I think it’s really not that important to preserve an existing ProtoFileElement if we instead could just costruct a new one using fancy builder, replacing package name with the synthesized one or no one at all. I think this particular thing requires a bit more precise investigation. Nevertheless, I merged your changes to the master, because we don’t have a better solution now. Wish you all the best, thank you for contributing into free software.