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module HaddockModuleTree(ModuleTree(..), mkModuleTree) where
import HsSyn
data ModuleTree = Node String Bool (Maybe String) (Maybe Doc) [ModuleTree]
mkModuleTree :: [(Module,Maybe String,Maybe Doc)] -> [ModuleTree]
mkModuleTree mods =
foldr fn [] [ (splitModule mod, pkg,short) | (mod,pkg,short) <- mods ]
where
fn (mod,pkg,short) trees = addToTrees mod pkg short trees
addToTrees :: [String] -> Maybe String -> Maybe Doc -> [ModuleTree] -> [ModuleTree]
addToTrees [] pkg short ts = ts
addToTrees ss pkg short [] = mkSubTree ss pkg short
addToTrees (s1:ss) pkg short (t@(Node s2 leaf node_pkg node_short subs) : ts)
| s1 > s2 = t : addToTrees (s1:ss) pkg short ts
| s1 == s2 = Node s2 (leaf || null ss) this_pkg this_short (addToTrees ss pkg short subs) : ts
| otherwise = mkSubTree (s1:ss) pkg short ++ t : ts
where
this_pkg = if null ss then pkg else node_pkg
this_short = if null ss then short else node_short
mkSubTree :: [String] -> Maybe String -> Maybe Doc -> [ModuleTree]
mkSubTree [] pkg short = []
mkSubTree [s] pkg short = [Node s True pkg short []]
mkSubTree (s:ss) pkg short = [Node s (null ss) Nothing Nothing (mkSubTree ss pkg short)]
splitModule :: Module -> [String]
splitModule (Module mdl) = split mdl
where split mdl0 = case break (== '.') mdl0 of
(s1, '.':s2) -> s1 : split s2
(s1, _) -> [s1]
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