ncellar / autumn4

A Java parser combinator library written with an unmatched feature set.

Autumn has moved to https://github.com/norswap/autumn

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Autumn

• Maven Dependency
• Javadoc
• User Guide

Autumn is a Java (8+) parser combinator library written with an unmatched feature set:

• Bundles pre-defined parsers and combinators for most common use cases
• Write your own parsers with regular Java code
• Support for both scannerless parsing and a separate lexing/tokenization step
• Support for parsing both text strings and lists of objects
• Associativity support for operators
• Left-recursion support
• Context-sensitive parsing (exclusive !!)
• Reasonably fast (5x slower than (the very fast) ANTLR)
• Thoroughly documented
• Small & clean codebase

Examples:

• JSON Grammar
• Java Grammar

The latest version of this document is available online at
https://github.com/norswap/autumn4/blob/master/README.md

Installation

If you are using Maven (or another popular JVM build tool), see here.