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Diffstat (limited to 'src/Text/Pandoc.hs')
| -rw-r--r-- | src/Text/Pandoc.hs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/Text/Pandoc.hs b/src/Text/Pandoc.hs index ba05589cd..0cd1af099 100644 --- a/src/Text/Pandoc.hs +++ b/src/Text/Pandoc.hs @@ -247,3 +247,13 @@ instance (Data a) => ToJsonFilter (a -> a) where instance (Data a) => ToJsonFilter (a -> IO a) where toJsonFilter f = getContents >>= (bottomUpM f :: Pandoc -> IO Pandoc) . decodeJSON >>= putStr . encodeJSON + +instance (Data a) => ToJsonFilter (a -> [a]) where + toJsonFilter f = getContents + >>= putStr . encodeJSON . (bottomUp (concatMap f) :: Pandoc -> Pandoc) . decodeJSON + +instance (Data a) => ToJsonFilter (a -> IO [a]) where + toJsonFilter f = getContents + >>= (bottomUpM (fmap concat . mapM f) :: Pandoc -> IO Pandoc) . decodeJSON + >>= putStr . encodeJSON + |