From: Matthijs Kooijman <m.kooijman@student.utwente.nl>
Date: Mon, 17 Aug 2009 10:09:25 +0000 (+0200)
Subject: Make vectorTH use singleton when possible.
X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;h=refs%2Fheads%2Fmaster;p=matthijs%2Fmaster-project%2Fsupport%2Ftfvec.git

Make vectorTH use singleton when possible.

This enabled the code generated by vectorTH to work with precision.
---

diff --git a/Data/Param/TFVec.hs b/Data/Param/TFVec.hs
index 1b2051e..33758f9 100644
--- a/Data/Param/TFVec.hs
+++ b/Data/Param/TFVec.hs
@@ -102,6 +102,7 @@ vectorCPS xs = unsafeVectorCPS (toInteger (P.length xs)) xs
 vectorTH :: (Lift a, Typeable a) => [a] -> ExpQ
 -- vectorTH xs = sigE [| (TFVec xs) |] (decTFVecT (toInteger (P.length xs)) xs)
 vectorTH [] = [| empty |]
+vectorTH [x] = [| singleton x |]
 vectorTH (x:xs) = [| x +> $(vectorTH xs) |]
 
 unsafeVector :: NaturalT s => s -> [a] -> TFVec s a
@@ -349,4 +350,4 @@ lexTFVec :: ReadS String
 lexTFVec ('>':rest) = [(">",rest)]
 lexTFVec ('<':rest) = [("<",rest)]
 lexTFVec str = lex str
-                                           
\ No newline at end of file
+