X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Futils%2FUtil.lhs;h=dc4f32ec5e7d7f4dffec59df200cd8fd6db7cf3c;hp=0e46889ec549fa3496f6fdb6c67a0eafc098e662;hb=e2e0785eb7f4efd9f7791d913cdfdfd03148cd86;hpb=814edf44433801e37318ce79082ac6991dbc87dd

diff --git a/compiler/utils/Util.lhs b/compiler/utils/Util.lhs
index 0e46889..dc4f32e 100644
--- a/compiler/utils/Util.lhs
+++ b/compiler/utils/Util.lhs
@@ -66,6 +66,9 @@ module Util (
         -- * Floating point
         readRational,
 
+        -- * read helpers
+        maybeReadFuzzy,
+
         -- * IO-ish utilities
         createDirectoryHierarchy,
         doesDirNameExist,
@@ -966,6 +969,17 @@ readRational top_s
 
 
 -----------------------------------------------------------------------------
+-- read helpers
+
+maybeReadFuzzy :: Read a => String -> Maybe a
+maybeReadFuzzy str = case reads str of
+                     [(x, s)]
+                      | all isSpace s ->
+                         Just x
+                     _ ->
+                         Nothing
+
+-----------------------------------------------------------------------------
 -- Create a hierarchy of directories
 
 createDirectoryHierarchy :: FilePath -> IO ()