Quasiquotation for Swift in Haskell

This library will eventually provide quasiquotation support for Swift in Template Haskell.

Warning

Unfortunately the Swift 2.1 grammar is quite left recursive -- not just on the small scale but on a large scale. This was not something I had noticed before digging right into this project. It looks as though the changes for Swift 3 might make some things easier in this regard (though I haven't checked the grammar closely). Much of this parser may be reusable for Swift 3. I would recommend using a grammar checking tool prior to encoding the Swift 3 grammar in parser combinators.

Resources

• Swift 5.1 Grammar Summary

TODO

• Upgrade to 5.1 🤣.
• Fix "large scale" left-recursion.
• remaining pattern productions.
• Replace interim identifier parser with one that meets the spec.
• getter-setter-keyword-block (currently disguised as simply getter-setter-block).
• expressions need to use chainr and chainl.
• missing/incomplete rendering functions.
• additional test cases:
  • closures and closure signatures
  • availability conditions
  • protocol members
  • nested expressions
  • enums