{-# LANGUAGE OverloadedStrings #-}

-- Module      : Main
-- Copyright   : (c) 2014-2015 Brendan Hay <brendan.g.hay@gmail.com>
-- License     : This Source Code Form is subject to the terms of
--               the Mozilla Public License, v. 2.0.
--               A copy of the MPL can be found in the LICENSE file or
--               you can obtain it at http://mozilla.org/MPL/2.0/.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : experimental
-- Portability : non-portable (GHC extensions)

module Main (main) where

import           Criterion
import           Criterion.Main
import           Data.List      (intersperse)
import           Data.Monoid
import           Data.Text      (Text)
import qualified Data.Text      as Text
import           Data.Text.Manipulate

main :: IO ()
main = defaultMain
    [ bgroup "Data.Text"
        [ bench "takeWord"
            $ whnf (Text.takeWhile (not . isWordBoundary)) phrase
        , bench "toCamel"
            $ whnf (lowerHead . mconcat . group Text.toTitle) phrase
        , bench "toPascal"
            $ whnf (upperHead . mconcat . group Text.toTitle) phrase
        , bench "toSnake"
            $ whnf (mconcat . intersperse "_" . group Text.toLower) phrase
        , bench "toSpinal"
            $ whnf (mconcat . intersperse "-" . group Text.toLower) phrase
        , bench "toTrain"
            $ whnf (mconcat . intersperse "-" . group Text.toTitle) phrase
        ]

    , bgroup "Data.Text.Case"
        [ bench "takeWord" $ whnf takeWord phrase
        , bench "toCamel"  $ whnf toCamel  phrase
        , bench "toPacal"  $ whnf toPascal phrase
        , bench "toSnake"  $ whnf toSnake  phrase
        , bench "toSpinal" $ whnf toSpinal phrase
        , bench "toTrain"  $ whnf toTrain  phrase
        ]
    ]

phrase :: Text
phrase = "Supercalifragilistic, world! This-is  A multipleDelimiter_String"

group :: (Text -> Text) -> Text -> [Text]
group f = map (f . Text.dropWhile isBoundary)
    . Text.groupBy (const (not . isWordBoundary))
