Re: [Haskell-cafe] ANNOUNCE: Grempa 0.1.0, Embedded grammar DSL and LALR parser generator

On Mon, Sep 6, 2010 at 2:45 PM, Olle Fredriksson wrote:

    expr :: Grammar Char E     expr = do       rec         e <- rule [ Plus  <@> e <# '+' <#> t                   , id    <@> t                   ]         t <- rule [ Times <@> t <# '*' <#> f                   , id    <@> f                   ]         f <- rule [ id    <@ '(' <#> e <# ')'                   , Var   <@ 'x'                   ]       return e

Looks like Applicative style. This is good, even while I don't really know why we are seeing <@> and <#> instead of <$> and <*>. How does Grempa compare with other parsing libraries/tools, such as Parsec, Attoparsec and Happy, with regard to ease of use and performance? Cheers! =) -- Felipe.