From 627894eacfba83bc820d5605b2a33d59c7c7e969 Mon Sep 17 00:00:00 2001
From: tv <tv@shackspace.de>
Date: Tue, 29 Jul 2014 08:49:42 +0200
Subject: rewrite (concat $ map f xs) to (xs >>= f)

---
 src/Main.hs    | 18 +++++++-----------
 src/Scanner.hs |  2 +-
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/src/Main.hs b/src/Main.hs
index f170492..6cac6fc 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -81,7 +81,7 @@ uiThread cf putState getState = forever $ do
     --t1 <- getCurrentTime
     --putStrLn $ "====> \ESC[32;1m" ++ show s ++ "\ESC[m in " ++
     --            (show $ diffUTCTime t1 t0)
-    --            ++ ": \"\ESC[35m" ++ (concat $ map (colorize . toChar) s)
+    --            ++ ": \"\ESC[35m" ++ (s >>= colorize . toChar)
     --            ++ "\ESC[m\""
     --case res of
     --    Left msg -> putStrLn $ "  error: " ++ msg
@@ -158,14 +158,13 @@ prettyError e = rec e
     color cc s = "\x1b[" ++ cc ++ "m" ++ s ++ "\x1b[m"
 
     rec (UnhandledInputError s) =
-      color "31" $ "unhandled input: <" ++ (pp "31;1" s) ++ "\x1b[;31m>"
+      color "31" $ "unhandled input: <" ++ (s >>= pp "31;1") ++ "\x1b[;31m>"
 
     rec (OtherError s) =
       color "31" $ "error: " ++ s
 
     -- TODO cc is ColorCode
-    pp cc = concat . map (pp1 cc)
-    pp1 cc c
+    pp cc c
       | isPrint c = [c]
       | otherwise = specialChar cc $
         case c of
@@ -242,7 +241,7 @@ execCommand ExecuteInputBuffer = do
           tell [ show s ]
       '!' : cmdline -> do
           --tell [ "spawn: " ++ cmdline ]
-          -- "input: <" ++ (concat $ map (reform 32) $ showBuffer b) ++ ">" ]
+          -- "input: <" ++ (showBuffer b >>= reform 32) ++ ">" ]
           -- TODO register process
           i <- state $ \ q ->
               let i = processCount q + 1
@@ -253,7 +252,7 @@ execCommand ExecuteInputBuffer = do
       "" -> do
           liftIO ringBell
       s -> do
-          tell [ "input: <" ++ (concat $ map (reform 32) s) ++ ">" ]
+          tell [ "input: <" ++ (s >>= reform 32) ++ ">" ]
 
     modifyBuffer (const emptyBuffer)
 
@@ -333,11 +332,9 @@ renderInputLine m (lhs, rhs) = do
                         InsertMode -> "> "
                         VerbatimMode -> "\x1b[34;1m^\x1b[m "
 
-    putStr $ promptString ++ pp lhs ++ pp rhs
-    moveCursorLeft (length $ ppVis rhs)
+    putStr $ promptString ++ (lhs >>= reform') ++ (rhs >>= reform')
+    moveCursorLeft (length $ rhs >>= reformVis)
   where
-    pp = concat . map reform'
-
     -- TODO unify reform and reform'
     reform' c =
       if isPrint c
@@ -349,7 +346,6 @@ renderInputLine m (lhs, rhs) = do
               _ -> charToCode c
           ) ++ "\x1b[m"
 
-    ppVis = concat . map reformVis
     reformVis c =
       if isPrint c
         then [c]
diff --git a/src/Scanner.hs b/src/Scanner.hs
index ba81abb..780f9f8 100644
--- a/src/Scanner.hs
+++ b/src/Scanner.hs
@@ -76,7 +76,7 @@ main = do
 
         putStrLn $ "====> \ESC[32;1m" ++ show s ++ "\ESC[m in " ++
                     (show $ diffUTCTime t1 t0)
-                    ++ ": \"\ESC[35m" ++ (concat $ map (colorize . toChar) s)
+                    ++ ": \"\ESC[35m" ++ (s >>= colorize . toChar)
                     ++ "\ESC[m\""
         case res of
             Left msg -> putStrLn $ "  error: " ++ msg
-- 
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