HStringTemplate-0.6.2: StringTemplate implementation in Haskell. Source code Contents Index

Text.StringTemplate.Classes

Synopsis

data SElem a = STR String | BS ByteString | STSH STShow | SM (SMap a) | LI [SElem a] | SBLE a | SNAT a | SNull class Show a => StringTemplateShows a where stringTemplateShow :: a -> String stringTemplateFormattedShow :: String -> a -> String class ToSElem a where toSElem :: Stringable b => a -> SElem b toSElemList :: Stringable b => [a] -> SElem b type SMap a = Map String (SElem a) data STShow = forall a . StringTemplateShows a => STShow a newtype StFirst a = StFirst { stGetFirst :: Maybe a } class Stringable a where stFromString :: String -> a stFromByteString :: ByteString -> a stToString :: a -> String mconcatMap :: [b] -> (b -> a) -> a mintercalate :: a -> [a] -> a mlabel :: a -> a -> a smempty :: a smappend :: a -> a -> a smconcat :: [a] -> a stShowsToSE :: (StringTemplateShows a, Stringable b) => a -> SElem b

Documentation

data SElem a Source

Constructors STR String BS ByteString STSH STShow SM (SMap a) LI [SElem a] SBLE a SNAT a SNull

class Show a => StringTemplateShows a where Source

The StringTemplateShows class should be instantiated for all types that are directly displayed in a StringTemplate, but take an optional format string. Each such type must have an appropriate ToSElem method defined as well. Methods stringTemplateShow :: a -> String Source Defaults to show. stringTemplateFormattedShow :: String -> a -> String Source Defaults to _ a -> stringTemplateShow a

class ToSElem a where Source

The ToSElem class should be instantiated for all types that can be inserted as attributes into a StringTemplate. Methods toSElem :: Stringable b => a -> SElem b Source toSElemList :: Stringable b => [a] -> SElem b Source

type SMap a = Map String (SElem a) Source

data STShow Source

Constructors forall a . StringTemplateShows a => STShow a

newtype StFirst a Source

Constructors StFirst stGetFirst :: Maybe a

class Stringable a where Source

The Stringable class should be instantiated with care. Generally, the provided instances should be enough for anything. Methods stFromString :: String -> a Source stFromByteString :: ByteString -> a Source stToString :: a -> String Source mconcatMap :: [b] -> (b -> a) -> a Source Defaults to mconcatMap m k = foldr (mappend . k) mempty m mintercalate :: a -> [a] -> a Source Defaults to (mconcat .) . intersperse mlabel :: a -> a -> a Source Defaults to mlabel x y = smconcat [x, stFromString [, y, stFromString ]] smempty :: a Source Just mempty. Here to avoid orphan instances smappend :: a -> a -> a Source Just mappend. Here to avoid orphan instances smconcat :: [a] -> a Source Just mconcat. Here to avoid orphan instances

stShowsToSE :: (StringTemplateShows a, Stringable b) => a -> SElem b Source

This method should be used to create ToSElem instances for types defining a custom formatted show function.

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