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authorJohn MacFarlane <jgm@berkeley.edu>2017-02-20 20:52:00 +0100
committerJohn MacFarlane <jgm@berkeley.edu>2017-02-20 20:52:00 +0100
commitce8226f1a7d64da56117d2f7f351e06225a84614 (patch)
tree9f2d716df0230f5f17372f19b8718dcf86039fd9 /src/Text/Pandoc/Error.hs
parente86e44b98e592d5a5e4c6b43d9b57b195f091ed9 (diff)
parent12d96508c62189b4ff8c8b797d34cc9ef177f5ee (diff)
downloadpandoc-ce8226f1a7d64da56117d2f7f351e06225a84614.tar.gz
Merge commit '9e52ac6bb02afd7b4ed5dad61021a1fa33051203' as 'data/templates'
Diffstat (limited to 'src/Text/Pandoc/Error.hs')
-rw-r--r--src/Text/Pandoc/Error.hs76
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diff --git a/src/Text/Pandoc/Error.hs b/src/Text/Pandoc/Error.hs
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--- a/src/Text/Pandoc/Error.hs
+++ /dev/null
@@ -1,76 +0,0 @@
-{-# LANGUAGE DeriveDataTypeable, DeriveGeneric #-}
-{-
-Copyright (C) 2006-2016 John MacFarlane <jgm@berkeley.edu>
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
--}
-{- |
- Module : Text.Pandoc.Error
- Copyright : Copyright (C) 2006-2016 John MacFarlane
- License : GNU GPL, version 2 or above
-
- Maintainer : John MacFarlane <jgm@berkeley.edu>
- Stability : alpha
- Portability : portable
-
-This module provides a standard way to deal with possible errors encounted
-during parsing.
-
--}
-module Text.Pandoc.Error (
- PandocError(..),
- handleError) where
-
-import Text.Parsec.Error
-import Text.Parsec.Pos hiding (Line)
-import Data.Generics (Typeable)
-import GHC.Generics (Generic)
-import Control.Exception (Exception)
-import Text.Pandoc.Shared (err)
-
-type Input = String
-
-data PandocError = PandocFileReadError FilePath
- | PandocShouldNeverHappenError String
- | PandocSomeError String
- | PandocParseError String
- | PandocParsecError Input ParseError
- | PandocMakePDFError String
- deriving (Show, Typeable, Generic)
-
-instance Exception PandocError
-
--- | Handle PandocError by exiting with an error message.
-handleError :: Either PandocError a -> IO a
-handleError (Right r) = return r
-handleError (Left e) =
- case e of
- PandocFileReadError fp -> err 61 $ "problem reading " ++ fp
- PandocShouldNeverHappenError s -> err 62 s
- PandocSomeError s -> err 63 s
- PandocParseError s -> err 64 s
- PandocParsecError input err' ->
- let errPos = errorPos err'
- errLine = sourceLine errPos
- errColumn = sourceColumn errPos
- ls = lines input ++ [""]
- errorInFile = if length ls > errLine - 1
- then concat ["\n", (ls !! (errLine - 1))
- ,"\n", replicate (errColumn - 1) ' '
- ,"^"]
- else ""
- in err 65 $ "\nError at " ++ show err' ++ errorInFile
- PandocMakePDFError s -> err 65 s
-