Sifflet.Text.Pretty

Documentation

class Pretty a where

The class of types that can be pretty-printed. (Unfortunately this is not very useful, because and Expr can be pretty Haskell or pretty Python or pretty Scheme, leading to overlapping instance declarations.)

pretty x is a pretty String representation of x. prettyList prefix infix postfix xs is a pretty String representation of the list xs, with prefix, infix, and postfix specifying the punctuation. For example, if (pretty x) => x, then prettyList [ , ] [x, x, x] => [x, x, x].

Minimal complete implementation: define pretty.

Methods

pretty :: a -> String

prettyList :: String -> String -> String -> [a] -> String

Instances

Pretty Operator

Pretty Symbol

Pretty SExpr

indentLine :: Int -> String -> String

Indent a single line n spaces.

sepLines :: [String] -> String

sepLines is like unlines, but omits the n at the end of the last line.

sepLines2 :: [String] -> String

sepLines2 is like sepLines, but adds an extra n between each pair of lines so they are double spaced.

sepComma :: [String] -> String

Separate strings by commas and nothing else (,)

sepCommaSp :: [String] -> String

Separate strings by commas and spaces (, )

sepSpace :: [String] -> String

Separate strings by just spaces ( )