Safe Haskell	Safe
Language	Haskell2010

Prettyprinter.Render.Util.SimpleDocTree

Contents

Type and conversion
Manipulating annotations
Common use case shortcut definitions

Description

Conversion of the linked-list-like SimpleDocStream to a tree-like SimpleDocTree.

Synopsis

data SimpleDocTree ann
- = STEmpty
- | STChar Char
- | STText !Int Text
- | STLine !Int
- | STAnn ann (SimpleDocTree ann)
- | STConcat [SimpleDocTree ann]
treeForm :: SimpleDocStream ann -> SimpleDocTree ann
unAnnotateST :: SimpleDocTree ann -> SimpleDocTree xxx
reAnnotateST :: (ann -> ann') -> SimpleDocTree ann -> SimpleDocTree ann'
alterAnnotationsST :: (ann -> [ann']) -> SimpleDocTree ann -> SimpleDocTree ann'
renderSimplyDecorated :: Monoid out => (Text -> out) -> (ann -> out -> out) -> SimpleDocTree ann -> out
renderSimplyDecoratedA :: (Applicative f, Monoid out) => (Text -> f out) -> (ann -> f out -> f out) -> SimpleDocTree ann -> f out

Type and conversion

data SimpleDocTree ann Source #

A SimpleDocStream is a linked list of different annotated cons cells (SText and then some further SimpleDocStream, SLine and then some further SimpleDocStream, …). This format is very suitable as a target for a layout engine, but not very useful for rendering to a structured format such as HTML, where we don’t want to do a lookahead until the end of some markup. These formats benefit from a tree-like structure that explicitly marks its contents as annotated. SimpleDocTree is that format.

Constructors

STEmpty
STChar Char
STText !Int Text	`length` is O(n), so we cache it in the `Int` field.
STLine !Int	`Int` = indentation level for the (next) line
STAnn ann (SimpleDocTree ann)	Annotate the contained document.
STConcat [SimpleDocTree ann]	Horizontal concatenation of multiple documents.

Instances

Functor SimpleDocTree Source #	Alter the document’s annotations. This instance makes `SimpleDocTree` more flexible (because it can be used in `Functor`-polymorphic values), but `fmap` is much less readable compared to using `reAnnotateST` in code that only works for `SimpleDocTree` anyway. Consider using the latter when the type does not matter.
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree Methods fmap :: (a -> b) -> SimpleDocTree a -> SimpleDocTree b # (<$) :: a -> SimpleDocTree b -> SimpleDocTree a #
Foldable SimpleDocTree Source #	Collect all annotations from a document.
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree Methods fold :: Monoid m => SimpleDocTree m -> m # foldMap :: Monoid m => (a -> m) -> SimpleDocTree a -> m # foldr :: (a -> b -> b) -> b -> SimpleDocTree a -> b # foldr' :: (a -> b -> b) -> b -> SimpleDocTree a -> b # foldl :: (b -> a -> b) -> b -> SimpleDocTree a -> b # foldl' :: (b -> a -> b) -> b -> SimpleDocTree a -> b # foldr1 :: (a -> a -> a) -> SimpleDocTree a -> a # foldl1 :: (a -> a -> a) -> SimpleDocTree a -> a # toList :: SimpleDocTree a -> [a] # null :: SimpleDocTree a -> Bool # length :: SimpleDocTree a -> Int # elem :: Eq a => a -> SimpleDocTree a -> Bool # maximum :: Ord a => SimpleDocTree a -> a # minimum :: Ord a => SimpleDocTree a -> a # sum :: Num a => SimpleDocTree a -> a # product :: Num a => SimpleDocTree a -> a #
Traversable SimpleDocTree Source #	Transform a document based on its annotations, possibly leveraging `Applicative` effects.
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree Methods traverse :: Applicative f => (a -> f b) -> SimpleDocTree a -> f (SimpleDocTree b) # sequenceA :: Applicative f => SimpleDocTree (f a) -> f (SimpleDocTree a) # mapM :: Monad m => (a -> m b) -> SimpleDocTree a -> m (SimpleDocTree b) # sequence :: Monad m => SimpleDocTree (m a) -> m (SimpleDocTree a) #
Eq ann => Eq (SimpleDocTree ann) Source #
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree Methods (==) :: SimpleDocTree ann -> SimpleDocTree ann -> Bool # (/=) :: SimpleDocTree ann -> SimpleDocTree ann -> Bool #
Ord ann => Ord (SimpleDocTree ann) Source #
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree Methods compare :: SimpleDocTree ann -> SimpleDocTree ann -> Ordering # (<) :: SimpleDocTree ann -> SimpleDocTree ann -> Bool # (<=) :: SimpleDocTree ann -> SimpleDocTree ann -> Bool # (>) :: SimpleDocTree ann -> SimpleDocTree ann -> Bool # (>=) :: SimpleDocTree ann -> SimpleDocTree ann -> Bool # max :: SimpleDocTree ann -> SimpleDocTree ann -> SimpleDocTree ann # min :: SimpleDocTree ann -> SimpleDocTree ann -> SimpleDocTree ann #
Show ann => Show (SimpleDocTree ann) Source #
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree Methods showsPrec :: Int -> SimpleDocTree ann -> ShowS # show :: SimpleDocTree ann -> String # showList :: [SimpleDocTree ann] -> ShowS #
Generic (SimpleDocTree ann) Source #
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree Associated Types type Rep (SimpleDocTree ann) :: Type -> Type # Methods from :: SimpleDocTree ann -> Rep (SimpleDocTree ann) x # to :: Rep (SimpleDocTree ann) x -> SimpleDocTree ann #
type Rep (SimpleDocTree ann) Source #
Instance details Defined in Prettyprinter.Render.Util.SimpleDocTree type Rep (SimpleDocTree ann) = D1 (MetaData "SimpleDocTree" "Prettyprinter.Render.Util.SimpleDocTree" "prettyprinter-1.7.0-3a58dVee6cSUUePu4NnX6" False) ((C1 (MetaCons "STEmpty" PrefixI False) (U1 :: Type -> Type) :+: (C1 (MetaCons "STChar" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Char)) :+: C1 (MetaCons "STText" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Int) :: S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Text)))) :+: (C1 (MetaCons "STLine" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Int)) :+: (C1 (MetaCons "STAnn" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 ann) :: S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 (SimpleDocTree ann))) :+: C1 (MetaCons "STConcat" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 [SimpleDocTree ann])))))

treeForm :: SimpleDocStream ann -> SimpleDocTree ann Source #

Convert a SimpleDocStream to its SimpleDocTree representation.

Manipulating annotations

unAnnotateST :: SimpleDocTree ann -> SimpleDocTree xxx Source #

Remove all annotations. unAnnotate for SimpleDocTree.

reAnnotateST :: (ann -> ann') -> SimpleDocTree ann -> SimpleDocTree ann' Source #

Change the annotation of a document. reAnnotate for SimpleDocTree.

alterAnnotationsST :: (ann -> [ann']) -> SimpleDocTree ann -> SimpleDocTree ann' Source #

Change the annotation of a document to a different annotation, or none at all. alterAnnotations for SimpleDocTree.

Note that this is as powerful as alterAnnotations, allowing one annotation to become multiple ones, contrary to alterAnnotationsS, which cannot do this.

Common use case shortcut definitions

renderSimplyDecorated Source #

Arguments

:: Monoid out
=> (Text -> out)	Render plain `Doc`
-> (ann -> out -> out)	How to modify an element with an annotation
-> SimpleDocTree ann
-> out

Simplest possible tree-based renderer.

For example, here is a document annotated with (), and the behaviour is to surround annotated regions with »>>>« and »<<<«:

>>> let doc = "hello" <+> annotate () "world" <> "!"
>>> let stdoc = treeForm (layoutPretty defaultLayoutOptions doc)
>>> T.putStrLn (renderSimplyDecorated id (\() x -> ">>>" <> x <> "<<<") stdoc)
hello >>>world<<<!

renderSimplyDecoratedA Source #

Arguments

:: (Applicative f, Monoid out)
=> (Text -> f out)	Render plain `Doc`
-> (ann -> f out -> f out)	How to modify an element with an annotation
-> SimpleDocTree ann
-> f out

Version of renderSimplyDecoratedA that allows for Applicative effects.