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Re: [xtext-dev] Xtext grammar translation bug?
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| Hi Oleg,
entryRules describe a complete document from the beginning to the end. Therefore the EOF token is used in these rules. They serve as parser rules if partial parsing is applied during editing of a file.
In your particular example it seems to be a bug in Antlr, e.g. if I manually edit the generated grammar and put meaningless parentheses around the the subrule for id1 = ID?, I don't the the error anymore. I'm afraid you have to refactor your grammar slightly to adopt to that issue. I'd also recommend to use Java-conventional names for the production rules, e.g. TranlationUnit instead of translation_unit as there will be Java classes created from those names.
Regards, Sebastian
On 14.01.2014, at 09:12, Oleg Bolshakov wrote: The problem seems to be somehow connected to the extensive use of "EOF" tokens in generated antlr grammar though I can not understand why it's done. Are there any info on what "entry rules" in generated grammar mean and why EOF at the end of them is needed?
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