"Generated from..." : a useless line that prevents compilation

[phandaal]

My .g4 files are in src/main/antlr4/path/to/my/unbelievable/package.

Antlr generates the desired .java files, and adds a comment at the beginning to point out that these files have been automatically generated:

// Generated from path\to\my\unbelievable\package\MyLexer.g4 by ANTLR 4.13.0

As per Java Language Specification, §3.3: "Unicode escapes are recognized in comments and character literals before tokenization." so when it sees the \u of my\unbelievable\package...

illegal unicode escape(errors(1): 1:34-1:36)
Invalid unicodeJava(1610612992)

and a purely decorative comment prevents compilation.

Proposed solution

Use / instead of \

// Generated from path/to/my/unbelievable./package/MyLexer.g4 by ANTLR 4.13.0

[rafaelicastro]

Another potential solution is to escape the unicode like such:

// Generated from path\to\my\\unbelievable\package\MyLexer.g4 by ANTLR 4.13.0

[phandaal]

Of course, but I think I shouldn't have to modify generated sources each time they are generated... So for the time being, I had to rename my unbelievable.package to incredible.package. This also works.