-- Hoogle documentation, generated by Haddock -- See Hoogle, http://www.haskell.org/hoogle/ -- | QuasiQuoter for multi-line interpolated strings -- -- Please see the README on GitHub at -- https://github.com/isovector/interpolatedstring-qq2#readme @package interpolatedstring-qq2 @version 0.1.0.0 -- | QuasiQuoter for interpolated strings using Perl 6 syntax. -- -- The q form does one thing and does it well: It contains a -- multi-line string with no interpolation at all: -- --
-- {-# LANGUAGE QuasiQuotes, ExtendedDefaultRules #-}
-- import Text.InterpolatedString.QQ2 (q)
-- foo :: String -- Text, ByteString etc also works
-- foo = [q|
--
-- Well here is a
-- multi-line string!
--
-- |]
--
--
-- Any instance of the IsString class is permitted.
--
-- The qc form interpolates curly braces: expressions inside #{}
-- will be directly interpolated if it's a Char, String,
-- Text or ByteString, or it will have show called
-- if it is not.
--
-- Escaping of '{' is done with backslash.
--
-- For interpolating numeric expressions without an explicit type
-- signature, use the ExtendedDefaultRules lanuage pragma, as shown
-- below:
--
--
-- {-# LANGUAGE QuasiQuotes, ExtendedDefaultRules #-}
-- import Text.InterpolatedString.QQ2 (qc)
-- bar :: String
-- bar = [qc| Well {6 * 7} |]
--
--
-- bar will have the value " Well hello there 42 ".
--
-- If you want control over how show works on your types, define a
-- custom ShowQ instance:
--
-- For example, this instance allows you to display interpolated lists of
-- strings as a sequence of words, removing those pesky brackets, quotes,
-- and escape sequences.
--
--
-- {-# LANGUAGE FlexibleInstances #-}
-- import Text.InterpolatedString.QQ2 (qc, ShowQ(..))
-- instance ShowQ [String] where
-- showQ = unwords
--
--
-- qc permits output to any types with both IsString and
-- Monoid instances.
--
--
-- {--}
-- import Text.InterpolatedString.QQ2 (qc)
-- import Data.Text (Text)
-- import Data.ByteString.Char8 (ByteString)
-- qux :: ByteString
-- qux = [qc| This will convert {"ByteString" :: ByteString} |]
--
module Text.InterpolatedString.QQ2
-- | QuasiQuoter for interpolating '{expr}' into a string literal. The
-- pattern portion is undefined.
qc :: QuasiQuoter
-- | QuasiQuoter for a non-interpolating string literal. The pattern
-- portion is undefined.
q :: QuasiQuoter
-- | A class for types that use special interpolation rules. Instances of
-- ShowQ that are also instances of IsString should obey
-- the following law:
--
-- -- fromString (showQ s) == s ---- -- because this library relies on this fact to optimize away needless -- string conversions. class ShowQ a showQ :: ShowQ a => a -> String instance GHC.Show.Show Text.InterpolatedString.QQ2.StringPart instance Data.String.IsString s => Text.InterpolatedString.QQ2.QQ s s instance (Text.InterpolatedString.QQ2.ShowQ a, Data.String.IsString s) => Text.InterpolatedString.QQ2.QQ a s instance Text.InterpolatedString.QQ2.ShowQ GHC.Types.Char instance Text.InterpolatedString.QQ2.ShowQ GHC.Base.String instance Text.InterpolatedString.QQ2.ShowQ Data.ByteString.Internal.ByteString instance Text.InterpolatedString.QQ2.ShowQ Data.ByteString.Lazy.Internal.ByteString instance Text.InterpolatedString.QQ2.ShowQ Data.Text.Internal.Text instance Text.InterpolatedString.QQ2.ShowQ Data.Text.Internal.Lazy.Text instance GHC.Show.Show a => Text.InterpolatedString.QQ2.ShowQ a