Our code style guidelines are based on the Android Code Style Guidelines for Contributors. We only changed a few rules:
- Line length is 120 characters
- FIXME must not be committed in the repository use TODO instead. FIXME can be used in your own local repository only.
On top of the Android linter rules (best run for this project using ./gradlew lintWordPressVanillaRelease), we use two linters: Checkstyle (for Java and some language-independent custom project rules), and ktlint (for Kotlin).
You can run checkstyle via a gradle command:
$ ./gradlew checkstyle
It generates an HTML report in WordPress/build/reports/checkstyle/checkstyle.html.
You can also view errors and warnings in realtime with the Checkstyle plugin. When importing the project into Android Studio, Checkstyle should be set up automatically. If it is not, follow the steps below.
You can install the CheckStyle-IDEA plugin in Android Studio here:
Android Studio > Preferences... > Plugins > CheckStyle-IDEA
Once installed, you can configure the plugin here:
Android Studio > Preferences... > Tools > Checkstyle
From there, add and enable the custom configuration file, located at config/checkstyle.xml.
You can run ktlint using ./gradlew ktlint, and you can also run ./gradlew ktlintFormat for auto-formatting. There is no IDEA plugin (like Checkstyle's) at this time.
You can run detekt via a gradle command:
$ ./gradlew WordPress:detekt
It generates an HTML report in WordPress/build/reports/detekt/detekt.html.
You can also view errors and warnings in realtime with the Detekt plugin.
You can install the detekt plugin in Android Studio here:
Android Studio > Preferences... > Plugins > detekt
Once installed, you can configure the plugin here:
Android Studio > Preferences... > Tools > Detekt
From there, add and enable the custom configuration file, located at config/detekt/detekt.yml.