Spoon is an open-source library to analyze, rewrite, transform, transpile Java source code. It parses source files to build a well-designed AST with powerful analysis and transformation API. It fully supports modern Java versions up to Java 11, 12, 13, 14. Spoon is an official Inria open-source project, and member of the OW2 open-source consortium.

The latest official documentation is available at http://spoon.gforge.inria.fr/ and a regularly updated PDF version is as https://projects.ow2.org/download/spoon/WebHome/spoon-user-manual.pdf.

If you use Spoon for academic purposes, please cite: Renaud Pawlak, Martin Monperrus, Nicolas Petitprez, Carlos Noguera, Lionel Seinturier. “Spoon: A Library for Implementing Analyses and Transformations of Java Source Code”. In Software: Practice and Experience, Wiley-Blackwell, 2015. Doi: 10.1002/spe.2346.

@article{pawlak:hal-01169705,
  TITLE = "{Spoon: A Library for Implementing Analyses and Transformations of Java Source Code}",
  AUTHOR = {Pawlak, Renaud and Monperrus, Martin and Petitprez, Nicolas and Noguera, Carlos and Seinturier, Lionel},
  JOURNAL = "{Software: Practice and Experience}",
  PUBLISHER = "{Wiley-Blackwell}",
  PAGES = {1155-1179},
  VOLUME = {46},
  URL = {https://hal.archives-ouvertes.fr/hal-01078532/document},
  YEAR = {2015},
  doi = {10.1002/spe.2346},
}

If you need professional support on Spoon (development, training, extension), you are welcome to post a comment on INRIA#3251

Get latest stable version with Maven, see https://search.maven.org/artifact/fr.inria.gforge.spoon/spoon-core

And start using it:

CtClass l = Launcher.parseClass("class A { void m() { System.out.println(\"yeah\");} }");

Documentation:

• Reference documentation: http://spoon.gforge.inria.fr/ (contains the content of the doc folder)
• Code examples: https://github.com/SpoonLabs/spoon-examples
• Videos: Spoon: Getting Started - Simon Urli @ OW2Con'18 (Paris), Generate Test Assertion with Spoon - Benjamin Danglot @ OW2Con'17 (Paris)

Create your first pull-request to improve the documentation, see doc! Proceed with your first bug fix! The community is open-minded, respectful and patient. All external contributions are welcome.

R1) The Spoon metamodel is as close as possible to the language concepts.

R2) The Spoon model of a program is complete and sound.

R3) The text version of a Spoon model is well-formed and semantically equivalent to the original program.

R4) The analysis and transformation API is intuitive and regular.

R5) Transformation operators are designed to warn as fast as possible about invalid programs. This is done either with static type checking or with dynamic checks when the operators are used.

R6) When feasible, the text version of a Spoon model is close to the original one.

To compile Spoon, you need a Java Development Kit (JDK) and Maven:

git clone https://github.com/INRIA/spoon
cd spoon
mvn compile

To run the tests:

mvn test

Latest version: https://search.maven.org/remote_content?g=fr.inria.gforge.spoon&a=spoon-core&v=LATEST&c=jar-with-dependencies - Javadoc

Maven:

<dependency>
    <groupId>fr.inria.gforge.spoon</groupId>
    <artifactId>spoon-core</artifactId>
    <!-- See rendered release value at http://spoon.gforge.inria.fr/ -->
    <version>{{site.spoon_release}}</version>
</dependency>

• July 2020: Spoon 8.2.0 (changelog)
• March 2020: Spoon 8.1.0 (changelog)
• November 2019, Spoon 8.0.0 (changelog)
• July 2019: Spoon 7.5.0 is released (changelog)
• May 2019: Spoon 7.4.0 is released (changelog)
• Februray 10, 2019: Spoon 7.3.0 is released (changelog)
• December 4, 2018: Spoon 7.2.0 is released (changelog)
• October 10, 2018: Spoon 7.1.0 is released (changelog)
• July 4, 2018: Spoon 7.0.0 is released (changelog)
• March 8, 2018: Spoon 6.2.0 is released (changelog)
• December 20, 2017: Spoon 6.1.0 is released, merry christmas! 🎄 (changelog)
• November 17, 2017: Spoon 6.0.0 is released! Check the (changelog) as there are few non backward-compatible changes ⚠️
• September 6, 2017: Spoon 5.9.0 is released (changelog) back-to-work release!
• July 11, 2017: Spoon 5.8.0 is released (changelog) Summer release 🍺 To be prefered wrt the previous one: fix lot of bugs.
• June 01, 2017: Spoon 5.7.0 is released (changelog)
• March 16, 2017: Spoon 5.6.0 is released (changelog) Spring release :-)
• January 11, 2017: Spoon 5.5.0 is released (changelog). Happy new year!
• October 27, 2016: Spoon 5.4.0 is released (changelog).
• September 19, 2016: Spoon 5.3.0 is released (changelog).
• June 30, 2016: Spoon 5.2.0 is released (changelog).
• June 22, 2016: Spoon 5.1.1 is released (changelog).
• March 21, 2016: Spoon 5.1.0 is released (changelog).
• February 12, 2016: Spoon 5.0.2 is released (changelog).
• February 3, 2016: Spoon 5.0.1 is released (changelog).
• January 25, 2016: Spoon 5.0.0 is released (changelog).
• November 18, 2015: Spoon 4.4.1 is released (changelog).
• November 16, 2015: Spoon 4.4.0 is released (changelog).
• September 22, 2015: Spoon 4.3.0 is released (changelog).
• June 15, 2015: Spoon 4.2.0 is released (changelog).
• May 7, 2015: Spoon 4.1.0 is released (changelog).
• April 8, 2015: Spoon 4.0.0 is released (changelog).
• February 11, 2015: Spoon 3.1 is released (changelog).
• December 9, 2014: Spoon 3.0 is released (changelog).
• November 12, 2014: Spoon 2.4 is released (changelog).
• October 9, 2014: Spoon 2.3.1 is released (changelog).
• September 12, 2014: Spoon 2.1 is released (changelog).
• April 2, 2014: Spoon 2.0 is released (changelog).
• September 30, 2013: Spoon 1.6 is released.
• April 12, 2012: Spoon 1.5 is released.

Alphabetical order of last names

git log --pretty="%an" | sed -e '/Spoon Bot/d' | sort -u | awk 'NF>=2 {print "* " $0}' | sort -k3

• David Bernard
• Artur Bosch
• Egor Bredikhin
• Maxime CLEMENT
• Benoit Cornu
• Andre Cruz
• Benjamin DANGLOT
• Scott Dickerson
• Yann Diorcet
• Thomas Durieux
• Sergey Fedorov
• Alcides Fonseca
• Clement Fournier
• Jan Galinski
• Nicolas Harrand
• Mickael Istria
• Mehdi Kaytoue
• Urs Keller
• Filip Krakowski
• Lukas Krejci
• Ashutosh Kumar Verma
• Roman Leventov
• Fan Long
• Kai Luo
• Matias Martinez
• Luke Merrick
• Martin Monperrus
• Vincenzo Musco
• Carlos Noguera
• Gerard Paligot
• Renaud Pawlak
• Nicolas Petitprez
• Phillip Schichtel
• Lionel Seinturier
• Miguel Sozinho Ramalho
• Marcel Steinbeck
• Christopher Stokes
• Eddie T
• Simon Urli
• Pavel Vojtechovsky
• Stefan Wolf
• Diorcet Yann
• Gregor Zeitlinger
• Tomasz Zielinski

Early contributors:

• Olivier Barais
• David Bernard
• Benoit Cornu
• Favio DeMarco
• Didier Donsez
• Christophe Dufour
• Sebastian Lamelas Marcote
• Matias Martinez
• Carlos Noguera
• Renaud Pawlak
• Nicolas Pessemier