Code Quality Rank: L2
Programming language: Java
Tags: Code Analysis    
Latest version: v8.0.0

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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. Spoon is an official Inria open-source project, and member of the OW2 open-source consortium. The official website is available at http://spoon.gforge.inria.fr/.

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.

  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},

Getting started in 2 seconds

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\");} }");

Some examples about the usage of Spoon can be found on spoon-examples.

Contributing in 2 seconds

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.

Design Philosophy

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


The download information is at http://spoon.gforge.inria.fr/.


See http://spoon.gforge.inria.fr/ecosystem.html

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Github Contributors

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