tfm

tfm is "tagless final macro" - the project is intended to eliminate the boilerplate associated with setting up an EDSL encoded in the finally tagless approach, specifically the approach taken in this article.

Documentation

Currently the documentation is all in the Scaladoc. Examples can be found in the examples sub-project.

Limitations

• For algebras with effectful parameters (e.g. have shape F[_]) the macro will replace each occurence of F with the name of the algebra. However, if the F[_] appears as part of a more complex type (e.g. A => F[B]), the macro cannot figure out how to make the appropriate interpreter call and will fail.

Reading

• Alternatives to GADTs in Scala
  • The generated code is taken from this post
• Typed Tagless Interpretations
• Folding Domain-Specific Languages: Deep and Shallow Embeddings
• Combining Deep and Shallow Embedding for EDSL

License

Code is provided under the MIT license available at http://opensource.org/licenses/MIT, as well as the LICENSE file.