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author | David Terei <davidterei@gmail.com> | 2011-07-20 11:09:03 -0700 |
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committer | David Terei <davidterei@gmail.com> | 2011-07-20 11:26:35 -0700 |
commit | 16514f272fb42af6e9c7674a9bd6c9dce369231f (patch) | |
tree | e4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/programs/jq_readsPrec/Main.hs | |
parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/programs/jq_readsPrec/Main.hs')
-rw-r--r-- | testsuite/tests/programs/jq_readsPrec/Main.hs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/testsuite/tests/programs/jq_readsPrec/Main.hs b/testsuite/tests/programs/jq_readsPrec/Main.hs new file mode 100644 index 0000000000..360a411ef0 --- /dev/null +++ b/testsuite/tests/programs/jq_readsPrec/Main.hs @@ -0,0 +1,20 @@ +module Main where + +data Vertex = V Int deriving (Read, Show) + +main = do + userInput <- getContents + (parseVertex.lines) userInput report + +report::Vertex -> IO () +report int = putStr (show int) + +parseVertex::[String] -> (Vertex -> IO ()) -> IO () +parseVertex inputLines cont + = case inputLines of + (l1:rest) -> case (reads l1) of + [(x,"")] -> cont x + other -> putStr + ((showString "Error - retype the edges\n". shows other) "") + _ -> putStr "No Vertex" + |