arrowapply-utils (empty) → 0.1

raw patch · 4 files changed

+156/−0 lines, 4 filesdep +basesetup-changed

Dependencies added: base

Files

Control/Arrow/ApplyUtils.hs +112/−0
LICENSE +23/−0
Setup.hs +2/−0
arrowapply-utils.cabal +19/−0

+ Control/Arrow/ApplyUtils.hs view

@@ -0,0 +1,112 @@+{-# LANGUAGE FlexibleInstances #-}+module Control.Arrow.ApplyUtils+where+import Control.Arrow++-- | An instance that lets you work with Arrows that support ArrowApply as monads.+-- | Example:+-- |   myarrow :: ArrowApply a => a Int Int+-- |   myarrow = monadicA $ \v -> do+-- |               let vp1 = v + 1+-- |               v' <- unmonadicA anotherIntToIntArrow vp1+-- |               return (v' * 10)+instance ArrowApply a => Monad (a ())+  where+    x >>= y = (x >>^ (\v -> (y v, ()))) >>> app+    return = arr . const++-- | Embed a block of monadic code in an arrow.+monadicA :: ArrowApply a => (b -> a () c) -> a b c+monadicA f = arr (\v -> (f v, ())) >>> app++-- | Embed an arrow in a block of monadic code.+unmonadicA :: ArrowApply a => a b c -> b -> a () c+unmonadicA a b = arr (const b) >>> a++-- | Lift an Arrow operation.+liftA :: ArrowApply a => (c -> d) -> a b c -> a b d+liftA = flip (>>^)++-- | Lift an Arrow operation with two parameters+liftA2 :: ArrowApply a => (p1 -> p2 -> d) -> a b p1 -> a b p2 -> a b d+liftA2 f a1 a2 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  return (f p1 p2)++-- | Lift an Arrow operation with three parameters+liftA3 :: ArrowApply a => (p1 -> p2 -> p3 -> d) -> a b p1 -> a b p2 -> a b p3 -> a b d+liftA3 f a1 a2 a3 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  p3 <- unmonadicA a3 v+  return (f p1 p2 p3)++-- | Lift an Arrow operation with four parameters+liftA4 :: ArrowApply a => (p1 -> p2 -> p3 -> p4 -> d) -> a b p1 -> a b p2 -> a b p3 -> a b p4 -> a b d+liftA4 f a1 a2 a3 a4 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  p3 <- unmonadicA a3 v+  p4 <- unmonadicA a4 v+  return (f p1 p2 p3 p4)++-- | Lift an Arrow operation with five parameters+liftA5 :: ArrowApply a => (p1 -> p2 -> p3 -> p4 -> p5 -> d) -> a b p1 -> a b p2 -> a b p3 -> a b p4 -> a b p5 -> a b d+liftA5 f a1 a2 a3 a4 a5 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  p3 <- unmonadicA a3 v+  p4 <- unmonadicA a4 v+  p5 <- unmonadicA a5 v+  return (f p1 p2 p3 p4 p5)++-- | Lift an Arrow operation with six parameters+liftA6 :: ArrowApply a => (p1 -> p2 -> p3 -> p4 -> p5 -> p6 -> d) -> a b p1 -> a b p2 -> a b p3 -> a b p4 -> a b p5 -> a b p6 -> a b d+liftA6 f a1 a2 a3 a4 a5 a6 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  p3 <- unmonadicA a3 v+  p4 <- unmonadicA a4 v+  p5 <- unmonadicA a5 v+  p6 <- unmonadicA a6 v  +  return (f p1 p2 p3 p4 p5 p6)++-- | Lift an Arrow operation with seven parameters+liftA7 :: ArrowApply a => (p1 -> p2 -> p3 -> p4 -> p5 -> p6 -> p7 -> d) -> a b p1 -> a b p2 -> a b p3 -> a b p4 -> a b p5 -> a b p6 -> a b p7 -> a b d+liftA7 f a1 a2 a3 a4 a5 a6 a7 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  p3 <- unmonadicA a3 v+  p4 <- unmonadicA a4 v+  p5 <- unmonadicA a5 v+  p6 <- unmonadicA a6 v+  p7 <- unmonadicA a7 v+  return (f p1 p2 p3 p4 p5 p6 p7)++-- | Lift an Arrow operation with eight parameters+liftA8 :: ArrowApply a => (p1 -> p2 -> p3 -> p4 -> p5 -> p6 -> p7 -> p8 -> d) -> a b p1 -> a b p2 -> a b p3 -> a b p4 -> a b p5 -> a b p6 -> a b p7 -> a b p8 -> a b d+liftA8 f a1 a2 a3 a4 a5 a6 a7 a8 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  p3 <- unmonadicA a3 v+  p4 <- unmonadicA a4 v+  p5 <- unmonadicA a5 v+  p6 <- unmonadicA a6 v+  p7 <- unmonadicA a7 v+  p8 <- unmonadicA a8 v+  return (f p1 p2 p3 p4 p5 p6 p7 p8)++-- | Lift an Arrow operation with eight parameters+liftA9 :: ArrowApply a => (p1 -> p2 -> p3 -> p4 -> p5 -> p6 -> p7 -> p8 -> p9 -> d) -> a b p1 -> a b p2 -> a b p3 -> a b p4 -> a b p5 -> a b p6 -> a b p7 -> a b p8 -> a b p9 -> a b d+liftA9 f a1 a2 a3 a4 a5 a6 a7 a8 a9 = monadicA $ \v -> do+  p1 <- unmonadicA a1 v+  p2 <- unmonadicA a2 v+  p3 <- unmonadicA a3 v+  p4 <- unmonadicA a4 v+  p5 <- unmonadicA a5 v+  p6 <- unmonadicA a6 v+  p7 <- unmonadicA a7 v+  p8 <- unmonadicA a8 v+  p9 <- unmonadicA a9 v+  return (f p1 p2 p3 p4 p5 p6 p7 p8 p9)

+ LICENSE view

@@ -0,0 +1,23 @@+Copyright (c) 2012, The University of Auckland+All rights reserved.++Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are met:++1. Redistributions of source code must retain the above copyright notice,+   this list of conditions and the following disclaimer.+2. 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.++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

+ arrowapply-utils.cabal view

@@ -0,0 +1,19 @@+Name: arrowapply-utils+Version: 0.1+Cabal-Version: >= 1.6+Build-Type: Simple+License: BSD3+License-File: LICENSE+Author: Andrew Miller+Copyright: (C) 2012 The University of Auckland+Maintainer: ak.miller@auckland.ac.nz+Stability: experimental+Synopsis: Utilities for working with ArrowApply instances more naturally+Description: This package provides useful utilities for making use of the opportunities the ArrowApply class provides, such as the ability to work with Arrows as Monads, and use liftM-like functions.+Category: Control+Source-Repository head+    Type:     git+    Location: https://github.com/A1kmm/cellml-testbed/+Library+    Exposed-Modules: Control.Arrow.ApplyUtils+    Build-Depends: base >= 3 && <= 5