Update to antlr 3.5.3

[tfbroner]

So even the latest version of xtext uses 16 years old version of antlr-runtime 3.2, which is causing a lot of stress at the moment in my project. I use drools engine v7+ which uses 3.5.2 version of antlr-runtime, and I can't exclude it as it relies on changes it has over 3.2, and xtext doesn't work with 3.5.2 as it crashes with EOF_TOKEN exceptions.

Caused by: java.lang.NoSuchFieldError: EOF_TOKEN
at org.eclipse.xtext.parser.antlr.Lexer.nextToken(Lexer.java:60)
at org.antlr.runtime.BufferedTokenStream.fetch(BufferedTokenStream.java:143)
at org.eclipse.xtext.resource.SynchronizedXtextResourceSet.getResource(SynchronizedXtextResourceSet.java:33)

Is there any particular reason why xtext hasn't progressed with dependency updates, and is it planned to do so any time soon?

[cdietrich]

i dont see any capacity in the project to work on his.

[LorenzoBettini]

@tfbroner you could try and propose a PR yourself, but maybe @szarnekow knows whether the upgrade needs further changes besides a simple version upgrade.

[HannesWell]

i dont see any capacity in the project to work on his.

@cdietrich Is there a deeper reason to not update? Or is it just a matter of getting all version ranges updated?
If it's just the latter, I can do that. If it's the former, I'm not sure if this is within my current knowledge.

[cdietrich]

Don’t know if Sebastian joins next sync but he is the only who may know

[szarnekow]

Xtext relies on internals of Antlr and is very sensitive even to the whitespace in the generated Java code. An update is not planned and likely not trivial.

[HannesWell]

I started a naive attempt in

• Update to ANTLR Runtime 3.5.3 #3669

For now, I was at least able to resolve all compile errors.