{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-|
The "Text.Regex.TRE" module provides a backend for regular
expressions. To use it should be imported along with
"Text.Regex.Lazy".  If you import this along with other backends, then
you should do so with qualified imports, perhaps renamed for
convenience.

You will need to have libpcre, from <http://www.pcre.org/>, to use
this module.  The haskell must be compiled with -DHAVE_TRE_H and
linked with pcre.  This is the default in the cabal file.

If you do not compile with HAVE_TRE_H then the functions will still
exist, but using them will create a run time error.  You can test for
the existance of TRE by checking 'getVersion' which is 'Nothing' if
not compiled with TRE or 'Just' 'String' if TRE is present.

Using the provided 'CompOption' and 'ExecOption' values and if
'configUTF8' is True, then you might be able to send UTF8 encoded
ByteStrings to TRE and get sensible results.  This is currently
untested.

The regular expression can be provided as a 'ByteString', but it will
be copied and a NUL byte appended unless such a byte is already
present.  Thus the regular expression cannot contain an explicit NUL
byte. The search string is passed as a CStringLen and may contain NUL
bytes and does not need to end in a NUL byte, and is searched in
place.

A 'String' will be converted into a CString or CStringLen for
processing.  Doing this repeatedly will be very inefficient.
-}
{- Copyright   :  (c) Chris Kuklewicz 2007 -}
module Text.Regex.TRE(getVersion_Text_Regex_TRE
  ,module Text.Regex.Base
  -- ** "Text.Regex.TRE.Wrap", a hsc module
  ,module Text.Regex.TRE.Wrap
  -- ** "Text.Regex.TRE.String", instances only
  ,module Text.Regex.TRE.String
  -- ** "Text.Regex.TRE.Sequence", instances only
  ,module Text.Regex.TRE.Sequence
  -- ** "Text.Regex.TRE.ByteString", instances only
  ,module Text.Regex.TRE.ByteString
  -- ** "Text.Regex.TRE.ByteString.Lazy", instances only
  ,module Text.Regex.TRE.ByteString.Lazy
                     ) where

import Text.Regex.TRE.Wrap(Regex, CompOption(CompOption),
  ExecOption(ExecOption), (=~), (=~~), ReturnCode, WrapError,
  unusedRegOffset, getVersion,
  compBlank, compExtended, compIgnoreCase, compNoSub, compNewline,
  execBlank, execNotBOL, execNotEOL)
import Text.Regex.TRE.String()
import Text.Regex.TRE.Sequence()
import Text.Regex.TRE.ByteString()
import Text.Regex.TRE.ByteString.Lazy()
import Data.Version(Version(..))
import Text.Regex.Base

getVersion_Text_Regex_TRE :: Version
getVersion_Text_Regex_TRE =
  Version { versionBranch = [0,91]
          , versionTags = ["unstable"]
          }