Show HN: My New Years project, Parcoa: Objective-C Parser Combinators

4 points

13 years ago

My experience parsing text on iOS is sullied by exposure to Haskell's Parsec and Python's Parcon. Given the ability to create pure, composable, functions using Objective-C blocks, I thought Cocoa an ideal environment for parser combinators.

I've built a somewhat easy to read internal DSL for combining parsers. For example:

  ParcoaParser *yes = [Parcoa string:@"yes"];
  ParcoaParser *no  = [Parcoa string:@"no"];
  ParcoaParser *answer = [yes or: no];

https://github.com/brotchie/Parcoa

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