Control.Monad.Loc.TH

The TH macro withLocTH to manually annotate program points, but you should always use the preprocessor if possible.

Documentation

withLocTH :: Q Exp

withLocTH is a convenient TH macro which expands to withLoc <source location> It should only be used when the MonadLoc preprocessor is not available. Usage:

 f x = $withLocTH $ do
          $withLocTH $ something
          x < -$withLocTH $ something-else
          ...

NOTE: unfortunately type signatures are necessary when using withLocTH