{-# LANGUAGE OverloadedStrings #-}
module Patat.Presentation.Display.CodeBlock
( prettyCodeBlock
) where
import Data.Maybe (mapMaybe)
import qualified Data.Text as T
import Patat.Presentation.Display.Internal
import qualified Patat.PrettyPrint as PP
import Patat.Theme
import Prelude
import qualified Skylighting as Skylighting
highlight
:: Skylighting.SyntaxMap -> [T.Text] -> T.Text -> [Skylighting.SourceLine]
highlight :: SyntaxMap -> [Text] -> Text -> [SourceLine]
highlight SyntaxMap
extraSyntaxMap [Text]
classes Text
rawCodeBlock =
case forall a b. (a -> Maybe b) -> [a] -> [b]
mapMaybe Text -> Maybe Syntax
getSyntax [Text]
classes of
[] -> Text -> [SourceLine]
zeroHighlight Text
rawCodeBlock
(Syntax
syn : [Syntax]
_) ->
case TokenizerConfig -> Syntax -> Text -> Either String [SourceLine]
Skylighting.tokenize TokenizerConfig
config Syntax
syn Text
rawCodeBlock of
Left String
_ -> Text -> [SourceLine]
zeroHighlight Text
rawCodeBlock
Right [SourceLine]
sl -> [SourceLine]
sl
where
getSyntax :: T.Text -> Maybe Skylighting.Syntax
getSyntax :: Text -> Maybe Syntax
getSyntax Text
c = Text -> SyntaxMap -> Maybe Syntax
Skylighting.lookupSyntax Text
c SyntaxMap
syntaxMap
config :: Skylighting.TokenizerConfig
config :: TokenizerConfig
config = Skylighting.TokenizerConfig
{ syntaxMap :: SyntaxMap
Skylighting.syntaxMap = SyntaxMap
syntaxMap
, traceOutput :: Bool
Skylighting.traceOutput = Bool
False
}
syntaxMap :: Skylighting.SyntaxMap
syntaxMap :: SyntaxMap
syntaxMap = SyntaxMap
extraSyntaxMap forall a. Semigroup a => a -> a -> a
<> SyntaxMap
Skylighting.defaultSyntaxMap
zeroHighlight :: T.Text -> [Skylighting.SourceLine]
zeroHighlight :: Text -> [SourceLine]
zeroHighlight Text
txt =
[[(TokenType
Skylighting.NormalTok, Text
line)] | Text
line <- Text -> [Text]
T.lines Text
txt]
prettyCodeBlock :: DisplaySettings -> [T.Text] -> T.Text -> PP.Doc
prettyCodeBlock :: DisplaySettings -> [Text] -> Text -> Doc
prettyCodeBlock DisplaySettings
ds [Text]
classes Text
rawCodeBlock =
[Doc] -> Doc
PP.vcat (forall a b. (a -> b) -> [a] -> [b]
map SourceLine -> Doc
blockified [SourceLine]
sourceLines) forall a. Semigroup a => a -> a -> a
<> Doc
PP.hardline
where
sourceLines :: [Skylighting.SourceLine]
sourceLines :: [SourceLine]
sourceLines =
[[]] forall a. [a] -> [a] -> [a]
++ SyntaxMap -> [Text] -> Text -> [SourceLine]
highlight (DisplaySettings -> SyntaxMap
dsSyntaxMap DisplaySettings
ds) [Text]
classes Text
rawCodeBlock forall a. [a] -> [a] -> [a]
++ [[]]
prettySourceLine :: Skylighting.SourceLine -> PP.Doc
prettySourceLine :: SourceLine -> Doc
prettySourceLine = forall a. Monoid a => [a] -> a
mconcat forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a b. (a -> b) -> [a] -> [b]
map Token -> Doc
prettyToken
prettyToken :: Skylighting.Token -> PP.Doc
prettyToken :: Token -> Doc
prettyToken (TokenType
tokenType, Text
str) = DisplaySettings -> (Theme -> Maybe Style) -> Doc -> Doc
themed
DisplaySettings
ds
(\Theme
theme -> Theme -> TokenType -> Maybe Style
syntaxHighlight Theme
theme TokenType
tokenType)
(String -> Doc
PP.string forall a b. (a -> b) -> a -> b
$ Text -> String
T.unpack Text
str)
sourceLineLength :: Skylighting.SourceLine -> Int
sourceLineLength :: SourceLine -> Int
sourceLineLength SourceLine
line = forall (t :: * -> *) a. (Foldable t, Num a) => t a -> a
sum [Text -> Int
T.length Text
str | (TokenType
_, Text
str) <- SourceLine
line]
blockWidth :: Int
blockWidth :: Int
blockWidth = forall (t :: * -> *) a b.
Foldable t =>
(a -> b -> b) -> b -> t a -> b
foldr forall a. Ord a => a -> a -> a
max Int
0 (forall a b. (a -> b) -> [a] -> [b]
map SourceLine -> Int
sourceLineLength [SourceLine]
sourceLines)
blockified :: Skylighting.SourceLine -> PP.Doc
blockified :: SourceLine -> Doc
blockified SourceLine
line =
let len :: Int
len = SourceLine -> Int
sourceLineLength SourceLine
line
indent :: Trimmable Doc
indent = forall a. a -> Trimmable a
PP.NotTrimmable Doc
" " in
Trimmable Doc -> Trimmable Doc -> Doc -> Doc
PP.indent Trimmable Doc
indent Trimmable Doc
indent forall a b. (a -> b) -> a -> b
$
DisplaySettings -> (Theme -> Maybe Style) -> Doc -> Doc
themed DisplaySettings
ds Theme -> Maybe Style
themeCodeBlock forall a b. (a -> b) -> a -> b
$
Doc
" " forall a. Semigroup a => a -> a -> a
<>
SourceLine -> Doc
prettySourceLine SourceLine
line forall a. Semigroup a => a -> a -> a
<>
String -> Doc
PP.string (forall a. Int -> a -> [a]
replicate (Int
blockWidth forall a. Num a => a -> a -> a
- Int
len) Char
' ') forall a. Semigroup a => a -> a -> a
<> Doc
" "