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--
-- Haddock - A Haskell Documentation Tool
--
-- (c) Simon Marlow 2003
--
module Haddock.ModuleTree ( ModuleTree(..), mkModuleTree ) where
import Haddock.DocName
import GHC ( HsDoc, Name )
import Module ( Module, moduleNameString, moduleName, modulePackageId )
#if __GLASGOW_HASKELL__ >= 609
import Module (packageIdString)
#else
import PackageConfig (packageIdString)
#endif
data ModuleTree = Node String Bool (Maybe String) (Maybe (HsDoc Name)) [ModuleTree]
mkModuleTree :: Bool -> [(Module, Maybe (HsDoc Name))] -> [ModuleTree]
mkModuleTree showPkgs mods =
foldr fn [] [ (splitModule mod, modPkg mod, short) | (mod, short) <- mods ]
where
modPkg mod | showPkgs = Just (packageIdString (modulePackageId mod))
| otherwise = Nothing
fn (mod,pkg,short) trees = addToTrees mod pkg short trees
addToTrees :: [String] -> Maybe String -> Maybe (HsDoc Name) -> [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 (HsDoc Name) -> [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 mod = split (moduleNameString (moduleName mod))
where split mod0 = case break (== '.') mod0 of
(s1, '.':s2) -> s1 : split s2
(s1, _) -> [s1]
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