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Model.hs
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Model.hs
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-- ================================================================
-- Copyright (C) 2010 Tim Scheffler
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-- ================================================================
module Model
(
Model, newModel,
getSimpleName, setSimpleName,
Answer, workString, stringAnswer,
lengthOfStrings
)
where
import Control.Monad
import Control.Monad.Error
import Data.IORef
import qualified Data.Text as T
type Answer = [(Int, T.Text)]
data Model = Model {
mdSimpleName :: IORef T.Text,
mdStringsLength :: IORef Answer
}
newModel :: IO Model
newModel = do text <- newIORef $ T.pack ""
stringsLength <- newIORef $ []
return $ Model text stringsLength
getSimpleName :: Model -> IO T.Text
getSimpleName mdl = readIORef (mdSimpleName mdl)
setSimpleName :: T.Text -> Model -> IO ()
setSimpleName text mdl = writeIORef (mdSimpleName mdl) text
workString :: T.Text -> Model -> IO ()
workString input mdl = writeIORef (mdStringsLength mdl) (lengthOfStrings parts)
where
parts = T.split (T.pack ", ") input
stringAnswer :: Model -> IO Answer
stringAnswer mdl = readIORef (mdStringsLength mdl)
lengthOfStrings :: [T.Text] -> Answer
lengthOfStrings = map $ \x -> (T.length x, x)