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|
-----------------------------------------------------------------------------
-- |
-- Module : Haddock.ModuleTree
-- Copyright : (c) Simon Marlow 2003-2006,
-- David Waern 2006
-- License : BSD-like
--
-- Maintainer : haddock@projects.haskell.org
-- Stability : experimental
-- Portability : portable
-----------------------------------------------------------------------------
module Haddock.ModuleTree ( ModuleTree(..), mkModuleTree ) where
import Haddock.Types ( Doc )
import GHC ( Name )
import Module ( Module, moduleNameString, moduleName, modulePackageId,
packageIdString )
data ModuleTree = Node String Bool (Maybe String) (Maybe (Doc Name)) [ModuleTree]
mkModuleTree :: Bool -> [(Module, Maybe (Doc Name))] -> [ModuleTree]
mkModuleTree showPkgs mods =
foldr fn [] [ (splitModule mdl, modPkg mdl, short) | (mdl, short) <- mods ]
where
modPkg mod_ | showPkgs = Just (packageIdString (modulePackageId mod_))
| otherwise = Nothing
fn (mod_,pkg,short) = addToTrees mod_ pkg short
addToTrees :: [String] -> Maybe String -> Maybe (Doc Name) -> [ModuleTree] -> [ModuleTree]
addToTrees [] _ _ 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 Name) -> [ModuleTree]
mkSubTree [] _ _ = []
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 mdl = split (moduleNameString (moduleName mdl))
where split mod0 = case break (== '.') mod0 of
(s1, '.':s2) -> s1 : split s2
(s1, _) -> [s1]
|
