org.jetbrains.idea.grammar JetBrains Grammar-Kit BNF Grammars and JFlex lexers editor. Readable parser/PSI code generator. messages.GrammarKitBundle com.intellij.modules.lang com.intellij.copyright com.intellij.java com.intellij.diagram org.intellij.grammar.intention.BnfFlipChoiceIntention intention.category.bnf BNF org.intellij.grammar.intention.BnfConvertOptExpressionIntention intention.category.bnf BNF messages.GrammarKitBundle