AntiCopyPaster is a plugin for IntelliJ IDEA that tracks the copying and pasting carried out by the developer and suggests extracting duplicates into a new method as soon as they are introduced in the code.
Important: Please note that AntiCopyPaster is a prototype and a work in progress. We would appreciate any feedback on the concept itself, as well as the implementation.
AntiCopyPaster requires IntelliJ IDEA of version 2022.3 to work. To install the plugin:
- Download the pre-built version of the plugin from here;
- Open IntelliJ IDEA and go to
File/Settings/Plugins; - Select the gear icon, and choose
Install Plugin from Disk...; - Choose the downloaded ZIP archive;
- Click
Apply; - Restart the IDE.
The plugin monitors the copying and pasting that takes place inside the IDE. As soon as a code fragment is pasted, the plugin checks if it introduces code duplication, and if it does, the plugin calculates a set of code metrics for it, and a pre-installed CNN model makes a decision whether this piece of code is suitable for Extract Method refactoring. If it is, the plugin suggests the developer to perform the Extract Method refactoring and applies the refactoring if necessary.
The scripts and tools that were used for data gathering and model training could be found here.
The tool validation and embedded models are available here: https://github.com/JetBrains-Research/extract-method-experiments.
The TensorFlow Model has been deactivated for this metrics based version of the plugin in order to make it smaller and more lightweight. In order to add back in the TensorFlowModel, the files and subdirectories in the TensorFlowModel directory need to be added to the src/main/resources folder.
In addition, the TensorflowModel.java and TensorflowNativeLibraryLoader.java need to be uncommented. If you intend to add these back in, you should check out this repository where that version of the plugin is kept up to date. This is to ensure that none of the files have been updated since they've been commented out.
If you have any questions or propositions, do not hesitate to contact Yaroslav Golubev at [email protected].