Text.PrettyPrint.HughesPJClass

Pretty printing class, simlar to Show but nicer looking.

Note that the precedence level is a Rational so there is an unlimited number of levels. This module re-exports HughesPJ.

Pretty typeclass

class Pretty a where

Pretty printing class. The precedence level is used in a similar way as in the Show class. Minimal complete definition is either pPrintPrec or pPrint.

Minimal complete definition

pPrintPrec | pPrint

Methods

pPrintPrec :: PrettyLevel -> Rational -> a -> Doc

pPrint :: a -> Doc

pPrintList :: PrettyLevel -> [a] -> Doc

Instances

Pretty Bool

Pretty Char

Pretty Double

Pretty Float

Pretty Int

Pretty Integer

Pretty Ordering

Pretty ()

Pretty a => Pretty [a]

Pretty a => Pretty (Maybe a)

(Pretty a, Pretty b) => Pretty (Either a b)

(Pretty a, Pretty b) => Pretty (a, b)

(Pretty a, Pretty b, Pretty c) => Pretty (a, b, c)

(Pretty a, Pretty b, Pretty c, Pretty d) => Pretty (a, b, c, d)

(Pretty a, Pretty b, Pretty c, Pretty d, Pretty e) => Pretty (a, b, c, d, e)

(Pretty a, Pretty b, Pretty c, Pretty d, Pretty e, Pretty f) => Pretty (a, b, c, d, e, f)

(Pretty a, Pretty b, Pretty c, Pretty d, Pretty e, Pretty f, Pretty g) => Pretty (a, b, c, d, e, f, g)

(Pretty a, Pretty b, Pretty c, Pretty d, Pretty e, Pretty f, Pretty g, Pretty h) => Pretty (a, b, c, d, e, f, g, h)

newtype PrettyLevel

Level of detail in the pretty printed output. Level 0 is the least detail.

Constructors

PrettyLevel Int

Instances

Eq PrettyLevel

Ord PrettyLevel

Show PrettyLevel

prettyNormal :: PrettyLevel

The "normal" (Level 0) of detail.

prettyShow :: Pretty a => a -> String

Pretty print a value with the prettyNormal level.

prettyParen :: Bool -> Doc -> Doc

Deprecated: Please use maybeParens instead

Parenthesize an value if the boolean is true.

module Text.PrettyPrint.HughesPJ