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
- Warn about not executed action in lexer rules that are referenced by other rules
- Warnings ACTION_SHOULD_BE_PLACED_AFTER_PREDICATES, PREDICATE_AT_THE_BEGINNING_OF_LEXER_RULE_DEGRADES_PERFORMANCE and misc fixes
- [C++] Cleanup ATNConfig and ATNConfigSet
- Enhancements to the C# runtime
- Support multiple directories with -lib
- [Java] Used LinkedHashSet to preserve insertion order in SemanticContext
- improve speed of non-ascii lexing
- Add DFAState.isLexerTerminationState
- New option for : lexer keyword=true
- Guard against null tree more in TreeViewer.
- Docs
- Java not yet supported