GumTree

This is the original gumtree implementation for finding fine-grained source code changes. This implementation is extended to support the functionalities to describe source code changes using a natural language.

This is the code that we have added to the GumTree: https://github.com/salmanyam/gumtree-modified/blob/master/client.diff/src/main/java/com/github/gumtreediff/client/diff/CommitGen.java

Status

• Master branch:
• Develop branch:

Description

GumTree is a complete framework to deal with source code as trees and compute differences between them. It includes possibilities such as:

• converting a source file into a language-agnostic tree format
• export the produced trees in various formats
• compute the differences between the trees
• export these differences in various formats
• visualize these differences graphically

Compared to classical code differencing tools, it has two important particularities:

• it works on a tree structure rather than a text structure,
• it can detect moved or renamed elements in addition of deleted and inserted elements.

We already deal with a wide range of languages: Java, C, JavaScript and Ruby. More languages are coming soon, if you want to help contact me.

Citing GumTree

We are researchers, therefore if you use GumTree in an academic work we would be really glad if you cite our seminal paper using the following bibtex:

@inproceedings{DBLP:conf/kbse/FalleriMBMM14,
  author    = {Jean{-}R{\'{e}}my Falleri and
               Flor{\'{e}}al Morandat and
               Xavier Blanc and
               Matias Martinez and
               Martin Monperrus},
  title     = {Fine-grained and accurate source code differencing},
  booktitle = {{ACM/IEEE} International Conference on Automated Software Engineering,
               {ASE} '14, Vasteras, Sweden - September 15 - 19, 2014},
  pages     = {313--324},
  year      = {2014},
  url       = {http://doi.acm.org/10.1145/2642937.2642982},
  doi       = {10.1145/2642937.2642982}
}

Documentation

To use GumTree, you can start by consulting the Getting Started page from our wiki.