> is there a way to write haskell code with indentation based expression
> boundaries and evaluate that in ghci ?
You can easily write a function to remove layout.
import Language.Haskell.Exts.Parser {- haskell-src-exts -}
import Language.Haskell.Exts.Pretty
unlayout :: String -> String
unlayout s =
let m = defaultMode {layout = PPNoLayout}
ParseOk r = parseExp s
in prettyPrintWithMode m r
-- > unlayout t0 == "let { a = 5; b = 6} in a + b"
t0 :: String
t0 = unlines ["let a = 5"
," b = 6"
,"in a + b"]
-- > unlayout t1 == unlayout t0
t1 :: String
t1 = "let {a = 5;b = 6} in a + b"
main :: IO ()
main = getContents >>= putStrLn . unlayout
It's not in hsc3 because haskell-src-exts seems a major dependency for a
three line function...
You can run the 'unlayout' process over outgoing expressions in emacs
using 'shell-command-to-string'.
Best,
Rohan
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