ARCHIVED

I have no practical intentions of completing this project, so it's now in an Archived state. That being said, I believe it serves as a good example of how to generate Dart kernel files. You may also be interested in package:front_end.

bullseye

A functional language frontend for the Dart VM.

About

Bullseye is greatly inspired by OCaml, and thus much of its syntax derives from that language.

It is mostly an educational/for-fun project, but is also a playground to try out features that don't yet exist in Dart.

Features

Fully or partially implemented features include:

• Record types

Planned features that are not yet implemented include:

• Value classes
• Pattern matching
• NNBD
• Flutter shorthand syntax
• Cast functions to Flutter widgets
• Spread operator

Installation

If you just want to use the current version:

pub global activate bullseye_lang

This will install the bullseye and blsc executables.

Example

Note: Bullseye is still in its very early stages, so don't be surprised if things break.

In a file, hello.bls, write:

let main() =
    print "Hello, Bullseye!"

To compile and run it immediately, run bullseye hello.bls. Any other arguments will be forwarded to the Dart VM.

You can also compile it to a *.dill file by calling blsc -o hello.dill hello.bls.

Alternatively, you can print a text representation of the compiled kernel file by calling blsc -f text hello.bls.

For other information, run blsc --help.

More Examples

The testcases/ directory contains sample files that are used to test the Bullseye compiler. Relevant sources can be found in:

• testcases/test/cases
• testcases/test/output