Checkstyle Processor

Purpose

Checks Java code style using Checkstyle.

The Rust alternative is icheckstyle: checkstyle’s grammar and the checks of the fleet’s checkstyle.xml, in-process, with checkstyle’s messages and positions. Switching is checkstyle → icheckstyle in the stanza header, dropping args = ["-c", "checkstyle.xml"].

How It Works

Discovers .java files in the project (excluding common build tool directories), runs checkstyle on each file, and records success in the cache. A non-zero exit code from checkstyle fails the product.

This processor supports batch mode.

If a checkstyle.xml file exists, it is automatically added as an extra input so that configuration changes trigger rebuilds.

Source Files

• Input: **/*.java
• Output: none (checker)

Configuration

[processor.checker.checkstyle]
args = []
dep_inputs = []

Batch support

The tool accepts multiple files on the command line. When batching is enabled (default), rsconstruct passes all files in a single invocation for better performance.

Clean behavior

This processor is a Checker — rsconstruct clean outputs is a no-op for it (checkers produce no outputs). See Clean behavior and rsconstruct clean.