The Unparse type class and its ParseTree
instance, as well as some text manipulation.
Class Unparse
Types that are unparsable. Unparsing is like prettyprinting, except that instead of pretty source the original source code is retrieved. This means unparsing is only possible for values that were the result of an earlier parse.
Text utility functions
over :: String -> String -> StringSource
over over' under
places over'
over under
. The resulting string has the same characters as over'
does, except where over'
contains spaces; at those positions, the character from under
shows. If under
is longer than over'
, over'
is padded with enough spaces to show all rest of under
.