24 lines
915 B
Haskell
24 lines
915 B
Haskell
module Datalog.LSP.Hover where
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import Control.Lens ((^.), Lens')
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import Data.Maybe (fromJust)
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import Language.LSP.Protocol.Lens (params, textDocument, uri, HasTextDocument, HasParams, HasUri)
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import Language.LSP.Protocol.Message
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import Language.LSP.Protocol.Types
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import Language.LSP.Server
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import Language.LSP.VFS (virtualFileText)
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hoverHandler :: Handlers (LspM ())
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hoverHandler = requestHandler SMethod_TextDocumentHover $ \req responder -> do
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let
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openUri = toNormalizedUri $ req ^. docUri
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TRequestMessage _ _ _ (HoverParams _doc pos _workDone) = req
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Position _l _c' = pos
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rsp txt = Hover (InL . mkMarkdown $ txt) (Just range)
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range = Range pos pos
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c <- fromJust <$> getVirtualFile openUri
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responder (Right . InL . rsp . virtualFileText $ c)
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docUri :: (HasParams s s1, HasTextDocument s1 s2, HasUri s2 a) => Lens' s a
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docUri = params . textDocument . uri
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