Safe Haskell	None

BuildBox.Pretty

Description

Pretty printing utils.

Synopsis

Documentation

module Text.PrettyPrint

class Pretty a whereSource

Methods

ppr :: a -> Doc Source

Instances

Pretty Float
Pretty Int
Pretty Integer
Pretty String
Pretty Doc
Pretty UTCTime
Pretty Sized
Pretty Used
Pretty Timed
Pretty BuildError
Pretty Bytes
Pretty Seconds
Pretty Platform
Pretty Environment
Pretty a => Pretty [a]
Pretty a => Pretty (Comparison a)
Pretty a => Pretty (Range a)

padRc :: Int -> Char -> Doc -> Doc Source

Right justify a doc, padding with a given character.

padR :: Int -> Doc -> Doc Source

Right justify a string with spaces.

padLc :: Int -> Char -> Doc -> Doc Source

Left justify a string, padding with a given character.

padL :: Int -> Doc -> Doc Source

Left justify a string with spaces.

blank :: Doc Source

Blank text. This is different different from empty because it comes out a a newline when used in a vcat.

pprEngDouble :: String -> Double -> Maybe Doc Source

Pretty print an engineering value, to 4 significant figures. Valid range is 10^(-24) (y/yocto) to 10^(+24) (Y/Yotta). Out of range values yield Nothing.

examples:

   liftM render $ pprEngDouble "J" 102400    ==>   Just "1.024MJ"
   liftM render $ pprEngDouble "s" 0.0000123 ==>   Just "12.30us"

pprEngInteger :: String -> Integer -> Maybe Doc Source

Like pprEngDouble but don't display fractional part when the value is < 1000. Good for units where fractional values might not make sense (like bytes).