[Haskell-cafe] combinators for a simple grammar
jcast at ou.edu
Mon Aug 6 22:49:58 EDT 2007
On Monday 06 August 2007, Rahul Kapoor wrote:
> I am having problems coming up with nice combinators for a simple
> DSEL. The abstract syntax is simply given by the types:
> Or is it a better idea to just remove the precedence rules from the
> types and move it the part of the code that evaluates the expressions?
Exactly thus. Say:
= Constant Bool
| SearchCondition :||: SearchCondition
| SearchCondition :&&: SearchCondition
infixr 3 (:&&:)
infixr 2 (:||:)
And you're set.
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