Compatible with  IntelliJ IDEA
25 126
BNF Grammars and JFlex lexers editor. Readable parser/PSI code generator.

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Update date

Recent change notes


  • JFlex: more color options & better AST
  • Generator: meta rule parameter as 'recoverWhile' predicate
  • Generator: support 'extends' with 'upper' and 'external' modifiers
  • Generator/PSI: fix for fake rules PSI accessors calculation
  • Generator/PSi: improved methods/classes names generation logic
Full change log...

General usage instructions

1. Create grammar *.bnf file, see grammars/Grammar.bnf in the plugin code

2. Tune the grammar using Live Preview + Structure view (ctrl-alt-P / meta-alt-P)

3. Generate parser/ElementTypes/PSI classes (ctrl-shift-G / meta-shift-G)

4. Generate lexer *.flex file and then run JFlex generator (both via context menu)

5. Implement ParserDefinition and add the corresponding registrations to the plugin.xml

6. Mix-in resolve and other non-trivial functionality to PSI