module PrettyExtra

import public Quox.Pretty
import public Quox.Name
import TAP

export
squash : String -> String
squash = pack . squash' . unpack . trim where
  squash' : List Char -> List Char
  squash' [] = []
  squash' (c :: cs) =
    if isSpace c then
      ' ' :: squash' (dropWhile isSpace cs)
    else
      c :: squash' cs

export
renderSquash : Doc HL -> String
renderSquash doc = squash $ renderShow (layoutCompact doc) ""

export
testPretty : PrettyHL a => (dnames, tnames : SnocList BaseName) ->
             a -> (uni, asc : String) ->
             {default uni label : String} -> Test
testPretty dnames tnames t uni asc {label} = test {e = Info} label $ do
  let uni  = squash uni; asc = squash asc
      uni' = renderSquash $ pretty0With True  dnames tnames t
      asc' = renderSquash $ pretty0With False dnames tnames t
  unless (uni == uni') $ Left [("exp", uni), ("got", uni')]
  unless (asc == asc') $ Left [("exp", asc), ("got", asc')]