From 9db2c42f4880362cf098358de830415c14f6878c Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Fri, 25 Dec 2015 17:56:13 +0000
Subject: Cleaned tree for rewrite

---
 bbcode/src/BBCode.hs | 120 ---------------------------------------------------
 1 file changed, 120 deletions(-)
 delete mode 100644 bbcode/src/BBCode.hs

(limited to 'bbcode/src/BBCode.hs')

diff --git a/bbcode/src/BBCode.hs b/bbcode/src/BBCode.hs
deleted file mode 100644
index 087842f..0000000
--- a/bbcode/src/BBCode.hs
+++ /dev/null
@@ -1,120 +0,0 @@
-{-# LANGUAGE OverloadedStrings, OverloadedLists, RankNTypes, ImpredicativeTypes #-}
-
-module BBCode
-       ( parse
-       , make
-       ) where
-
-import Thermoprint
-
-import BBCode.Tokenizer
-import BBCode.Syntax
-
-import Data.Maybe
-import Data.Monoid
-import Data.Either
-import Data.Bifunctor
-import Data.List
-import Data.Ord
-import Data.Foldable
-
-import Data.Function (on)
-
-import           Data.CaseInsensitive  ( CI )
-import qualified Data.CaseInsensitive as CI
-
-import           Data.Map  ( Map )
-import qualified Data.Map as Map
-
-import Prelude hiding (takeWhile)
-
-import Debug.Trace
-
-knownTags :: Map (CI String) (Either (Block String -> Block String) (Inline String -> Inline String))
-knownTags = [ ("center", Left Center)
-            , ("u", Right Underline)
-            ]
-
-isBlock, isInline :: String -> Bool
-isBlock = testTag isLeft
-isInline = testTag isRight
-testTag f k = fromMaybe False (f <$> Map.lookup (CI.mk k) knownTags)
-
-data Decorated c = Decorated c [String]
-                 deriving (Show, Eq)
-
-make :: Block String -> String
-make (Over blocks) = concat $ map make blocks
-make (Center block) = "[center]" ++ make block ++ "[/center]\n"
-make (Paragraph inline) = make' inline ++ "\n"
-
-make' :: Inline String -> String
-make' (Beside inlines) = concat $ map make' inlines
-make' (Underline inline) = "[u]" ++ make' inline ++ "[/u]"
-make' (Cooked c) = c
-make' (Raw _) = error "Cannot transform block containing raw data to bbcode"
-
-parse :: String -> Either String (Block String)
-parse input = massage <$> ((remerge . blockify <$> (tokenize input >>= treeify)) >>= semantics)
-
-massage :: Block String -> Block String
-massage (Over [x]) = massage x
-massage (Over xs) = Over $ map massage xs
-massage (Center x) = Center $ massage x
-massage (Paragraph x) = Paragraph $ massage' x
-
-massage' :: Inline String -> Inline String
-massage' (Beside [x]) = massage' x
-massage' (Beside xs) = Beside $ map massage' xs
-massage' (Underline x) = Underline $ massage' x
-massage' z = z
-
-blockify :: ContentForest -> [Decorated String]
-blockify = map sortDeco . concat . map (blockify' [])
-  where
-    blockify' _ Empty = []
-    blockify' initial (Content str) = [str `Decorated` initial]
-    blockify' initial (Tagged cs tag) = concat $ map (blockify' $ tag : initial) cs
-    sortDeco :: Decorated c -> Decorated c
-    sortDeco (Decorated c tags) = Decorated c $ (nubBy ((==) `on` CI.mk) . sortBy blockiness) tags
-    blockiness :: String -> String -> Ordering
-    blockiness a b = comparing isBlock a b <> comparing CI.mk a b -- sort also alphabetically for the benefit of remerge
-
-remerge :: [Decorated String] -> ContentForest
-remerge [] = []
-remerge [(Decorated c deco)] = [appEndo applyDeco $ Content c]
-  where
-    applyDeco = foldMap (\t -> Endo (\c -> Tagged [c] t)) $ reverse deco
-remerge xs = concat $ map toTree $ groupLasts xs
-  where
-    groupLasts = groupBy ((==) `on` (listToMaybe . reverse . (\(Decorated _ ds) -> ds)))
-    -- toTree :: [Decorated String] -> [ContentTree]
-    toTree [] = []
-    toTree (x@(Decorated _ []):xs) = map (Content . (\(Decorated c []) -> c)) (x:xs)
-    toTree (x@(Decorated _ ds):xs) = [Tagged content tag]
-      where
-        tag = last ds
-        content = concat $ map toTree $ groupLasts $ map stripLast (x:xs)
-        stripLast (Decorated c ds) = Decorated c (init ds)
-
-unknownTag :: forall a. String -> Either String a
-unknownTag tag = Left $ "Unknown tag: " ++ tag
-
-semantics :: ContentForest -> Either String (Block String)
-semantics forest = Over <$> mapM semantics' forest
-
-semantics' :: ContentTree -> Either String (Block String)
-semantics' Empty = Right $ Over []
-semantics' (Content str) = Right $ Paragraph (Cooked str)
-semantics' (Tagged cs tag) = case Map.lookup (CI.mk tag) knownTags of
-  Nothing -> unknownTag tag
-  Just (Left f) -> Over . map f <$> mapM semantics' cs
-  Just (Right f) -> Paragraph . Beside . map f<$> mapM iSemantics cs
-
-iSemantics :: ContentTree -> Either String (Inline String)
-iSemantics Empty = Right $ Beside []
-iSemantics (Content str) = Right $ Cooked str
-iSemantics (Tagged cs tag) = case Map.lookup (CI.mk tag) knownTags of
-  Nothing -> unknownTag tag
-  Just (Left f) -> error "Known inline tag sorted within block"
-  Just (Right f) -> Beside . map f <$> mapM iSemantics cs
-- 
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