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An Instaparse EBNF grammar for the Clojure language.


Add as a dependency:

[clojure-ebnf-grammar "0.1.0"]

Either require the parser:

    (ns my.namespace
      (:require [clojure.ebnf-grammar.parse :as p]))
    (p/parse-clojure (slurp "my-file.clj"))

Or make use of resources/clojure.ebnf directly.


Grammars are a concise and descriptive way to formalize a language definition.

New tools may be easier to build if parsing Clojure was more accessible.

New languages might adopt Clojure grammar as a starting point for a new grammar.

Learners may benefit from a precise definition of Clojure grammar.


This grammar is not officially endorsed.

This grammar is not complete.

This grammar is built specifically for Instaparse. While it might be possible to make a grammar that can be used in other context such as ANTLR, this has not been attempted yet.

For most use cases, you should probably use tools.analyzer instead.


Issues, pull requests, and suggestions are welcome.


Copyright © 2020 Timothy Pratley

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at

This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at

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