antlr/antlr4

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

# ANTLR v4 [](http://java.oracle.com) [](https://raw.githubusercontent.com/antlr/antlr4/master/LICENSE.txt) **ANTLR** (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a parser that can build parse trees and also generates a listener interface (or visitor) that makes it easy to respond to the recognition of phrases of interest. **Dev branch build status** [](https://github.com/antlr/antlr4/actions/workflows/hosted.yml) (github actions) ## Versioning ANTLR 4 supports 10 target languages (Cpp, CSharp, Dart, Java, JavaScript, PHP, Python3, Swift, TypeScript, Go), and ensuring consistency across these targets is a unique and highly valuable feature. To ensure proper support of this feature, each release of ANTLR is a complete release of the tool and the 10 runtimes, all with the same version. As such, ANTLR versioning does not strictly follow semver semantics: * a component may be released with the latest version number even though nothing has changed within that component since the previous release * major version is bumped only when ANTLR is rewritten for a totally new "generation", such as ANTLR3 -> ANTLR4 (LL(\*) -> ALL(\*) parsing) * minor version updates may include minor breaking changes, the policy is to regenerate parsers with every release (4.11 -> 4.12) * backwards compatibility is only guaranteed for patch version bumps (4.11.1 -> 4.11.2) If y