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ANTLR 4.1 [message #1065485]

Wed, 26 June 2013 00:17

Michael Card

Messages: 7
Registered: June 2013

Junior Member

Hello everyone-

I have an Xtext grammar with 119 production rules, 14 of which are enum declarations.

Unfortunately, the embedded ANTLR generates a InternalParser with over 3000 "DFAs", each of which is a static constant BitSet that is apparently used for syntax error reporting. The sheer number of these "DFAs" causes the InternalParser class that is generated for my DSL to get the infamous "static initializer is exceeding 65535 bytes" error in Java.

This particular bug has been corrected in ANTLR 4.1, which as I understand it will be released soon. When will this new version of ANTLR be incorporated into Xtext?

Thanks!

-Mike

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Re: ANTLR 4.1 [message #1065503 is a reply to message #1065485]

Wed, 26 June 2013 07:56

Sylvain EVEILLARD

Messages: 556
Registered: July 2009

Senior Member

I had a similar problem on a generated lexer once.
I managed to get it re-generated (after a xtext generation, using the .g generated by xtext) by another ANTLR version than the one using by xtext which resolved the problem.
This wouldn't work for the parser though.

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