th-lift (empty) → 0.2

raw patch · 9 files changed

+479/−0 lines, 9 filesdep +basedep +template-haskellbuild-type:Customsetup-changed

Dependencies added: base, template-haskell

Files

• BSD3 +26/−0
• COPYING +6/−0
• Changelog +5/−0
• Foo.hs +11/−0
• GPL-2 +340/−0
• Language/Haskell/TH/Lift.hs +52/−0
• Setup.hs +8/−0
• Test.hs +10/−0
• th-lift.cabal +21/−0

@@ -0,0 +1,26 @@+Copyright (c) Ian Lynagh.+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.+3. The names of the author may not be used to endorse or promote+   products derived from this software without specific prior written+   permission.++THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.

@@ -0,0 +1,6 @@++Copyright (c) Ian Lynagh, 2006.++This package can be used under either the GPL v2, as in ./GPL-2, or the+3-clause BSD, as in ./BSD3, license.+

@@ -0,0 +1,5 @@++0.1 6/9/2006:++* Initial release.+

@@ -0,0 +1,11 @@++module Foo where++import Language.Haskell.TH.Lift++data Foo a = Foo a Char | Bar a+    deriving Show++$( do d <- deriveLift ''Foo+      return [d] )+

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@@ -0,0 +1,52 @@++module Language.Haskell.TH.Lift where++import GHC.Exts+import Data.PackedString+import Language.Haskell.TH+import Language.Haskell.TH.Syntax++modName :: String+modName = "Language.Haskell.TH.Lift"++deriveLift :: Name -> Q Dec+deriveLift n+ = do i <- reify n+      case i of+          TyConI (DataD _ _ vs cons _) ->+              let ctxt = cxt [conT ''Lift `appT` varT v | v <- vs]+                  typ = foldl appT (conT n) $ map varT vs+                  fun = funD 'lift (map doCons cons)+              in instanceD ctxt (conT ''Lift `appT` typ) [fun]+          _ -> error (modName ++ ".deriveLift: unhandled: " ++ pprint i)++doCons :: Con -> Q Clause+doCons (NormalC c sts)+ = do let ns = zipWith (\_ i -> "x" ++ show i) sts [0..]+          con = [| conE c |]+          args = [ [| lift $(varE (mkName n)) |] | n <- ns ]+          e = foldl (\e1 e2 -> [| appE $e1 $e2 |]) con args+      clause [conP c (map (varP . mkName) ns)] (normalB e) []+doCons c = error (modName ++ ".doCons: Unhandled constructor: " ++ pprint c)++instance Lift Name where+    lift (Name occName nameFlavour) = [| Name occName nameFlavour |]++instance Lift PackedString where+    lift ps = [| packString $(lift $ unpackPS ps) |]++instance Lift NameFlavour where+    lift NameS = [| NameS |]+    lift (NameQ modName) = [| NameQ modName |]+    lift (NameU i) = [| case $( lift (I# i) ) of+                            I# i' -> NameU i' |]+    lift (NameL i) = [| case $( lift (I# i) ) of+                            I# i' -> NameL i' |]+    lift (NameG nameSpace pkgName modName)+     = [| NameG nameSpace pkgName modName |]++instance Lift NameSpace where+    lift VarName = [| VarName |]+    lift DataName = [| DataName |]+    lift TcClsName = [| TcClsName |]+

@@ -0,0 +1,8 @@++module Main (main) where++import Distribution.Simple++main :: IO ()+main = defaultMain+

@@ -0,0 +1,10 @@++module Main (main) where++import Foo+import Language.Haskell.TH.Syntax++main :: IO ()+main = do print $( lift (Foo "str1" 'c') )+          print $( lift (Bar "str2") )+

@@ -0,0 +1,21 @@+Name:               th-lift+Version:            0.2+License:            OtherLicense+License-File:       COPYING+Copyright:          Ian Lynagh, 2006+Author:             Ian Lynagh+Maintainer:         igloo@earth.li+Stability:          experimental+Synopsis:           Derive Template Haskell's Lift class for datatypes.+Description:+    Derive Template Haskell's Lift class for datatypes.+Category:           Language+Tested-With:        GHC==6.6+Build-Depends:      base, template-haskell+Extensions:         TemplateHaskell+-- Can't see an extension for I#+ghc-options:        -fglasgow-exts+Extra-source-files: BSD3, GPL-2, Changelog, Foo.hs, Test.hs+Exposed-modules:+    Language.Haskell.TH.Lift+