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
- Could not deserialize ATN with version 4 (expected 3).
- Rule name changed, extra time costs.
- C#: remove redundant functionality and upgrade Windows .NET to 462
- Json trees
- Save DFA for faster parser start up
- ATN optimization: removing of redundant epsilon transitions and related basic states
- Imported Lexer Grammar is lower priority
- Performance across targets
- Performance improvements (and looks like a bug fix) for C++ runtime.
- Allow converting a ParseTree to an AST
- Docs
- Java not yet supported