From 1c2edafcd825d7d881ddbb50288c94d6b1a679eb Mon Sep 17 00:00:00 2001
From: Tissevert <tissevert+devel@marvid.fr>
Date: Wed, 10 Jun 2020 16:17:59 +0200
Subject: [PATCH] Import existing code

---
 CHANGELOG.md                    |  5 +++++
 ExceptIOH.cabal                 | 27 +++++++++++++++++++++++++++
 LICENSE                         | 30 ++++++++++++++++++++++++++++++
 Setup.hs                        |  2 ++
 src/Control/Monad/Except/IOH.hs |  8 ++++++++
 5 files changed, 72 insertions(+)
 create mode 100644 CHANGELOG.md
 create mode 100644 ExceptIOH.cabal
 create mode 100644 LICENSE
 create mode 100644 Setup.hs
 create mode 100644 src/Control/Monad/Except/IOH.hs

diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..99fcc46
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Revision history for ExceptIOH
+
+## 0.1.0.0 -- YYYY-mm-dd
+
+* First version. Released on an unsuspecting world.
diff --git a/ExceptIOH.cabal b/ExceptIOH.cabal
new file mode 100644
index 0000000..5656982
--- /dev/null
+++ b/ExceptIOH.cabal
@@ -0,0 +1,27 @@
+cabal-version:       >=1.10
+-- Initial package description 'ExceptIOH.cabal' generated by 'cabal init'.
+--   For further documentation, see http://haskell.org/cabal/users-guide/
+
+name:                ExceptIOH
+version:             0.1.0.0
+synopsis:            Exception handling, cause apparently it's missing from the Except Monad ?
+-- description:
+homepage:            https://git.marvid.fr/Tissevert/ExceptIOH
+-- bug-reports:
+license:             BSD3
+license-file:        LICENSE
+author:              Tissevert
+maintainer:          tissevert+devel@marvid.fr
+-- copyright:
+category:            Control
+build-type:          Simple
+extra-source-files:  CHANGELOG.md
+
+library
+  exposed-modules:     Control.Monad.Except.IOH
+  -- other-modules:
+  -- other-extensions:
+  build-depends:       base >=4.12 && <4.13
+                     , mtl
+  hs-source-dirs:      src
+  default-language:    Haskell2010
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a58e302
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright (c) 2020, Tissevert
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Tissevert nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
index 0000000..9a994af
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/src/Control/Monad/Except/IOH.hs b/src/Control/Monad/Except/IOH.hs
new file mode 100644
index 0000000..092ac3c
--- /dev/null
+++ b/src/Control/Monad/Except/IOH.hs
@@ -0,0 +1,8 @@
+module Control.Monad.Except.IOH (
+    handle
+  ) where
+
+import Control.Monad.Except (MonadError(..), ExceptT, runExceptT)
+
+handle :: Monad m => ExceptT a m b -> (a -> m b) -> m b
+handle m handler = (runExceptT m) >>= either handler return