[Haskell-cafe] Parsing, infixes and on-the-fly precedence

[Kim-Ee Yeoh]

On Mon, Sep 28, 2015 at 2:28 PM, Jeffrey Brown <jeffbrown.the at gmail.com>
wrote:

> I imagine a parser that operates on (String,[String]) pairs, for which the
> second element allows the user to define precedence on the fly.


Let's use the Parser newtype

newtype Parser a = Parser { parse :: String -> [(a,String)] }

from

http://dev.stephendiehl.com/fun/002_parsers.html

as a basis for discussion.

Now you want to "operate on (String,[String]) pairs", so the Parser newtype
must now look like this:

type MyInput = (String,[String])

newtype MyParser a = MyParser { parse :: MyInput -> [(a,MyInput)] }

Is this what you have in mind?

-- Kim-Ee
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