Swallow.Refactor 3.0.0

dotnet tool install --global Swallow.Refactor --version 3.0.0
This package contains a .NET tool you can call from the shell/command line.
dotnet new tool-manifest # if you are setting up this repo
dotnet tool install --local Swallow.Refactor --version 3.0.0
This package contains a .NET tool you can call from the shell/command line.
#tool dotnet:?package=Swallow.Refactor&version=3.0.0
nuke :add-package Swallow.Refactor --version 3.0.0


Refactor goes BRRR!

A tool that was originally designed as a way to enable reliably refactor a big code-base automatically, it has since turned into a generic interface to the Roslyn API to interact with any C# code, be it just reading and analyzing or even modifying.

What's BRRR short for, you ask? Boundless Roslyn Refactoring Runner.


brrr refactor -s|--solution <solution> code [--filter-name <name>] [--filter-content <content>] <rewriters>

When calling refactor, instead of passing all rewriters via CLI you can instead pass the path to a JSON file. This file must match the following scheme:

  "filter": {
    "name": "<some regex>", // A regex that filenames should match, optional
    "content": "<some text>" // A text that files should contain, optional
  "rewriters": [
    { "name": "<some rewriter>" }, // A rewriter without any parameters
    { "name": "<some rewriter>", "parameters": [ "parameter", "parameter" ] } // A rewriter with parameters

To find out what rewriters are available, you can use brrr rewriter list and brrr rewriter describe <rewriter>.

But it doesn't stop there - there's a lot of things you can do. Using brrr asyncify, for example, allows you to turn a chain of calls into async calls automatically, fixing any GetAwaiter().GetResult()-calls along the way.

To see all commands that you can use, run

brrr --help


Building and installing yourself

To install the tool (and thus make it available globally), you can use the following command:

dotnet pack -c Release -o packages/
dotnet tool install --global --no-cache --add-source packages/ Swallow.Refactor

This will make brrr be a globally executable tool. To uninstall it again, you can execute:

dotnet tool uninstall --global Swallow.Refactor
Note for users of just

If you've got just installed, you can use just install, just uninstall or just reinstall! Take a look at the justfile, there're some neat things for you.

Installing via NuGet

The tool is published on NuGet as well. To install it from there, you can use the following command:

dotnet tool install --global Swallow.Refactor


If you want to use your own rewriters, commands, symbol filters, you name it - you can pass your own assemblies to the execution. They will get picked up and the relevant classes are available in all the use-cases as if they were embedded in the program!

Invoking the tool using the -p or --plugin option passing a list of semicolon-separated filepaths will load each assembly.

brrr -p|--plugin SomeAssembly.dll;SomeOtherAssembly.dll list

Using this, you can extend the basic behaviour in many ways, like defining additional commands to be executed or registering additional IDocumentRewriters or ITargetedRewriters.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

Version Downloads Last updated
3.0.0 95 1/20/2024
2.1.0 231 10/21/2023
2.0.1 157 7/30/2023
2.0.0 133 6/15/2023
1.0.1 140 6/4/2023
1.0.0 178 4/10/2023

See RELEASE_NOTES.md for release notes