A22
Modern Ada support
Designed for standard Ada source across language versions, including Ada 2022-oriented workflows.
Modern Ada formatting for professional teams
Professional Ada formatting, built for real codebases.
Adafmt™ is a modern, high-performance, safety-oriented developer tool for configuration-driven style correction, syntax error detection, and repeatable professional formatting.
$
adafmt format src/ --config adafmt.toml
Why Adafmt
Less style noise. More engineering signal.
Ada teams should not have to debate indentation, alignment, or layout in every review. Adafmt applies the team’s selected formatting configuration so routine style feedback can be resolved mechanically and consistently.
CFG
Configuration-driven style
Capture formatting choices in configuration and apply them consistently across a codebase.
ERR
Syntax error detection
Detect syntax problems during formatting runs so invalid input is surfaced early in local and automated workflows.
BAK
Safe by default
Automatic backup behavior helps preserve source content and reduces adoption risk for automated formatting.
SPD
Adaptive performance
Formatting behavior is tuned for practical workloads, from focused edits to larger project-scale runs.
CLI
Developer workflow ready
Use the adafmt command locally, in scripts, and in CI-friendly validation workflows.
How it Works
Turn style preferences into repeatable formatting.
Adafmt keeps the workflow familiar: choose formatting options, run the command, review safe output, and keep code reviews focused on engineering decisions.
Choose a style
Capture team preferences in a formatting configuration.
Run adafmt
Format a file, package, branch, repository, or automated check.
Review safely
Automatic backup behavior helps preserve source content.
In the Lab
Tested on standards suites, real Ada code, and project-scale corpora.
Adafmt maintains a high quality bar. It has been thoroughly validated against relevant ACATS Ada 2012 tests, supplemental Ada 2022 feature tests, and real-world open-source Ada code.
The goal is practical confidence: broad syntax handling, stable formatting output, and reliable behavior on the kinds of Ada source professional teams maintain. Its largest test corpus contains more than 51,000 Ada files.
Performance
Benchmarked for daily work and project-scale runs.
Fresh benchmark numbers for small, medium, and large workloads are being prepared for publication.
| Workload | Example use | Status |
|---|---|---|
| Small | A file or focused change set | Fresh benchmark pending. |
| Medium | A package, component, or branch | Fresh benchmark pending. |
| Large | A full repository or test corpus | Fresh benchmark pending. |
Migration
Familiar where it helps. Better where it matters.
Adafmt intentionally preserves familiar command-line and configuration concepts where that helps GNAT Ada teams adopt a modern formatter with less friction.
Adafmt
- Modern Ada support
- Configuration-driven style correction
- Safe backup behavior
- Relevant ACATS and Ada 2022 validation
- Real-world open-source Ada corpus
- 51,000+ Ada files in the largest test corpus
Existing workflows
Existing GNAT formatting tools helped establish familiar workflows for Ada developers. Adafmt builds on that familiarity while focusing on broader validation, safe defaults, and professional formatting results.
Release plan
Adafmt v1.0.0 begins on Linux.
A v1.0.0 release of Adafmt for Linux amd64 and Linux arm64 is planned by June 1, 2026. A Windows 11 release is expected shortly afterwards. macOS is a supported platform, but the macOS release depends on resolving an issue with an external vendor library before packaging can be prepared.
Once licensing is enabled, 14-day trial builds will be available from this site with an option to subscribe at the end of the trial period.
FAQ
Clear answers for Ada developers.
Short, structured answers help developers, search engines, and AI assistants understand what Adafmt does.
What is Adafmt?
Adafmt is a professional Ada formatter for teams that want safe, repeatable, configuration-driven formatting across real Ada codebases.
Does Adafmt support Ada 2022?
Yes. Adafmt is designed for standard Ada source across language versions, including Ada 2022-oriented workflows and supplemental Ada 2022 feature tests.
How is Adafmt tested?
Adafmt has been validated against relevant ACATS Ada 2012 tests, supplemental Ada 2022 feature tests, and real-world open-source Ada code. The largest test corpus contains more than 51,000 Ada files.
Does Adafmt work with GNAT Ada projects?
Yes. Adafmt is designed for professional Ada workflows, including GNAT Ada teams, while formatting standard Ada source rather than compiler-private syntax.
Is Adafmt safe to run on source files?
Adafmt is safety-oriented and uses automatic backup behavior to help preserve source content and reduce adoption risk for automated formatting.
Will Adafmt offer a trial?
Yes. Once licensing is enabled, 14-day trial builds will be available from this site with an option to subscribe at the end of the trial period.
Which platforms will Adafmt support?
Adafmt v1.0.0 for Linux amd64 and Linux arm64 is planned by June 1, 2026. A Windows 11 release is expected shortly afterwards. macOS is a supported platform, with release packaging pending resolution of an external vendor library issue.
Launch status: Initial product introduction site. Last updated: May 16, 2026.