codewars/runner

Issue tracker for CodeRunner used on Codewars and Qualified.

Reporting Issues

Please report any language related issues here.
For anything else about Codewars, please use codewars/codewars.com.

Feature Requests

Please open new issues using appropriate issue templates.

Code

CodeRunner itself is not open source, but it's roughly equivalent to the following:

$ WORKDIR=/workspace/
# Create a container
$ C=$(docker container create --rm -w $WORKDIR language-image cmd args)
# Copy files
$ files | preprocess | docker container cp - $C:$WORKDIR
# Run
$ docker container start --attach $C | postprocess

• WORKDIR is not always /workspace/ and can be a subdirectory of it (planned to be standardized in the future)
• preprocess is responsible for the file layout and any code modifications necessary for backwards compatibility (e.g., concatenation)
• postprocess transforms the output when necessary (e.g., Codewars test output from JSON)

Images can be used with local files by changing the step to copy the files:

$ docker container cp ./files/. $C:$WORKDIR
#                            ^^
#                            copy contents and not itself

Container images are available on DockerHub under qualified.

Contributing

Contributions are welcomed!

For now, please look at the following places:

• Issues with help wanted label
• Projects with code-runner topic

Feel free to open issues to ask us if you'd like to contribute in other ways.

Supported Languages

Stable

• C
• C#
• C++
• Clojure
• CoffeeScript
• Coq
• Crystal
• Dart
• Elixir
• F#
• Go
• Groovy
• Haskell
• Java
• JavaScript
• Kotlin
• Lean
• Lua
• NASM
• PHP
• Python
• Racket
• Ruby
• Rust
• Scala
• Shell
• SQL
• Swift
• TypeScript

Beta

• Agda
• BF
• CFML
• COBOL
• CommonLisp
• D
• Elm
• Erlang
• Factor
• Forth
• Fortran
• Haxe
• Idris
• Julia
• Lambda Calculus
• Nim
• Objective-C
• OCaml
• Pascal
• Perl
• PowerShell
• Prolog
• PureScript
• R
• Raku
• Reason
• RISC-V
• Solidity
• VB.NET

Requested

See issues with language request label.