antlr4
https://github.com/antlr/antlr4
Java
ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.
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- Issues
- ATN optimization: removing of redundant epsilon transitions and related basic states
- Performance improvements (and looks like a bug fix) for C++ runtime.
- initial pass at a tree rewriter mechanism based up on existing visitors.
- Go Target - Visit implementation - two other minor changes runtimeimport tokenstream
- Docs
- Java not yet supported