ANTLR JavaScript Target

Question

I have been using ANTLR to generate a parser + tree grammar for a mark up language with Java target which works fine. Now I am trying to get the target in JavaScript to use it in my web browser.

However, I have not been able to locate any good documentation on how to go about doing this. I am using eclipse with ANTLR IDE, and when i specify the language as JavaScript, I get the following errors.

Multiple markers at this line

• (10): internal error: group JavaScript does not satisfy interface ANTLRCore: mismatched arguments on these templates [treeParser(grammar, name, scopes, tokens, tokenNames, globalAction, rules, numRules, bitsets, labelType, ASTLabelType, superClass, members, filterMode)]

• (10): internal error: java.util.NoSuchElementException: no such attribute: filterMode in template context [treeParser]

If anyone could help me out with this or point me to some material which I could read about the JavaScript target with ANTLR, it would be great.

Thanks

Answer 1

There is a new JS Lang target for ANTLR4 that was posted to GitHub almost 3 months ago:

antlr/antlr4-javascript

It's not integrated into an official release yet, but you can probably just throw it into the latest ANTLR4 codebase and recompile ANTLR yourself.