indexed-free (empty) → 0.1

raw patch · 4 files changed

+89/−0 lines, 4 filesdep +basedep +indexedsetup-changed

Dependencies added: base, indexed

Files

Control/Monad/Indexed/Free.hs +35/−0
LICENSE +30/−0
Setup.hs +2/−0
indexed-free.cabal +22/−0

+ Control/Monad/Indexed/Free.hs view

@@ -0,0 +1,35 @@+{-# LANGUAGE GADTs #-}
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Control.Monad.Indexed.Free
+-- Copyright   :  (C) 2013 Fumiaki Kinoshita
+-- License     :  BSD-style (see the file LICENSE)
+--
+-- Maintainer  :  Fumiaki Kinsohita <fumiexcel@gmail.com>
+-- Stability   :  provisional
+-- Portability :  non-portable
+--
+----------------------------------------------------------------------------
+module Control.Monad.Indexed.Free (IxFree(..)) where
+
+import Control.Monad.Indexed
+
+data IxFree f i j x where
+    Pure :: a -> IxFree f i i a
+    Free :: f i j (IxFree f j k a) -> IxFree f i k a
+
+instance IxFunctor f => IxFunctor (IxFree f) where
+    imap f (Pure a) = Pure (f a)
+    imap f (Free w) = Free (imap (imap f) w)
+
+instance IxFunctor f => IxPointed (IxFree f) where
+    ireturn = Pure
+
+instance IxFunctor f => IxApplicative (IxFree f) where
+    iap (Pure a) (Pure b) = Pure (a b)
+    iap (Pure a) (Free fb) = Free (imap a `imap` fb)
+    iap (Free fa) mb = Free $ imap (`iap` mb) fa
+
+instance IxFunctor f => IxMonad (IxFree f) where
+    ibind k (Pure a) = k a
+    ibind k (Free fm) = Free $ imap (ibind k) fm

+ LICENSE view

@@ -0,0 +1,30 @@+Copyright (c) 2013, Fumiaki Kinoshita
+
+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 Fumiaki Kinoshita 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.

+ Setup.hs view

@@ -0,0 +1,2 @@+import Distribution.Simple
+main = defaultMain

+ indexed-free.cabal view

@@ -0,0 +1,22 @@+name:                indexed-free
+version:             0.1
+synopsis:            indexed monads for free
+description:         A free indexed monad
+homepage:            https://github.com/fumieval/indexed-free
+license:             BSD3
+license-file:        LICENSE
+author:              Fumiaki Kinoshita
+maintainer:          Fumiaki Kinoshita <fumiexcel@gmail.com>
+copyright:           Copyright (C) 2013 Fumiaki Kinoshita
+category:            Language
+build-type:          Simple
+cabal-version:       >=1.8
+
+source-repository head
+  type: git
+  location: https://github.com/fumieval/indexed-free.git
+
+library
+  exposed-modules:     Control.Monad.Indexed.Free
+
+  build-depends:       base ==4.*, indexed < 0.2