{-# LANGUAGE CPP, NamedFieldPuns, TupleSections, LambdaCase,
   DuplicateRecordFields, RecordWildCards, TupleSections, ViewPatterns,
   TypeApplications, ScopedTypeVariables, BangPatterns #-}
module GHC.Debugger.Utils where

import GHC
import GHC.Data.FastString
import GHC.Driver.DynFlags as GHC
import GHC.Driver.Ppr as GHC
import GHC.Utils.Outputable as GHC

import GHC.Debugger.Monad
import GHC.Debugger.Interface.Messages

--------------------------------------------------------------------------------
-- * GHC Utilities
--------------------------------------------------------------------------------

-- | Convert a GHC's src span into an interface one
realSrcSpanToSourceSpan :: RealSrcSpan -> SourceSpan
realSrcSpanToSourceSpan ss = SourceSpan
  { file = unpackFS $ srcSpanFile ss
  , startLine = srcSpanStartLine ss
  , startCol = srcSpanStartCol ss
  , endLine = srcSpanEndLine ss
  , endCol = srcSpanEndCol ss
  }

-- | Display an Outputable value as a String
display :: Outputable a => a -> Debugger String
display x = do
  dflags <- getDynFlags
  return $ showSDoc dflags (ppr x)
{-# INLINE display #-}