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diff --git a/src/Haddock/Types.hs b/src/Haddock/Types.hs
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+--
+-- Haddock - A Haskell Documentation Tool
+--
+-- (c) Simon Marlow 2003
+--
+-- Ported to use the GHC API by David Waern 2006
+-- 
+
+module Haddock.Types where
+
+import GHC
+import Outputable
+
+import Data.Map
+
+data DocOption
+  = OptHide           -- ^ This module should not appear in the docs
+  | OptPrune
+  | OptIgnoreExports  -- ^ Pretend everything is exported
+  | OptNotHome        -- ^ Not the best place to get docs for things
+                      -- exported by this module.
+  deriving (Eq, Show)
+
+data ExportItem name
+  = ExportDecl
+      Name                 -- ^ The original name
+      (LHsDecl name)       -- ^ A declaration
+      (Maybe (HsDoc name)) -- ^ Maybe a doc comment
+      [InstHead name]	     -- ^ Instances relevant to this declaration
+
+  | ExportNoDecl           -- ^ An exported entity for which we have no 
+                           -- documentation (perhaps because it resides in
+                           -- another package)
+      Name                 -- ^ The original name
+      name                 -- ^ Where to link to
+      [name]               -- ^ Subordinate names
+
+  | ExportGroup            -- ^ A section heading
+      Int                  -- ^ section level (1, 2, 3, ... )
+      String               -- ^ Section "id" (for hyperlinks)
+      (HsDoc name)         -- ^ Section heading text
+
+  | ExportDoc              -- ^ Some documentation
+      (HsDoc name)
+
+  | ExportModule           -- ^ A cross-reference to another module
+      Module
+
+type InstHead name = ([HsPred name], name, [HsType name])
+type ModuleMap     = Map Module HaddockModule
+type DocMap        = Map Name (HsDoc DocName)
+type DocEnv        = Map Name Name
+
+data DocName = Link Name | NoLink Name
+
+instance Outputable DocName where
+  ppr (Link   n) = ppr n
+  ppr (NoLink n) = ppr n
+
+data HaddockModule = HM {
+
+  -- | A value to identify the module
+  hmod_mod                :: Module,
+
+  -- | The original filename for this module
+  hmod_orig_filename      :: FilePath,
+
+  -- | Textual information about the module 
+  hmod_info               :: HaddockModInfo Name,
+
+  -- | The documentation header for this module
+  hmod_doc                :: Maybe (HsDoc Name),
+
+  -- | The renamed documentation header for this module
+  hmod_rn_doc             :: Maybe (HsDoc DocName),
+
+  -- | The Haddock options for this module (prune, ignore-exports, etc)
+  hmod_options            :: [DocOption],
+
+  hmod_exported_decl_map  :: Map Name (LHsDecl Name),
+  hmod_doc_map            :: Map Name (HsDoc Name),  
+  hmod_rn_doc_map         :: Map Name (HsDoc DocName),
+
+  hmod_export_items       :: [ExportItem Name],
+  hmod_rn_export_items    :: [ExportItem DocName],
+
+  -- | All the names that are defined in this module
+  hmod_locals             :: [Name],
+
+  -- | All the names that are exported by this module
+  hmod_exports            :: [Name],
+
+  -- | All the visible names exported by this module
+  -- For a name to be visible, it has to:
+  -- - be exported normally, and not via a full module re-exportation.
+  -- - have a declaration in this module or any of it's imports, with the    
+  --   exception that it can't be from another package.
+  -- Basically, a visible name is a name that will show up in the documentation
+  -- for this module.
+  hmod_visible_exports    :: [Name],
+
+  hmod_sub_map            :: Map Name [Name],
+
+  -- | The instances exported by this module
+  hmod_instances          :: [Instance]
+}
+
+data DocMarkup id a = Markup {
+  markupEmpty         :: a,
+  markupString        :: String -> a,
+  markupParagraph     :: a -> a,
+  markupAppend        :: a -> a -> a,
+  markupIdentifier    :: [id] -> a,
+  markupModule        :: String -> a,
+  markupEmphasis      :: a -> a,
+  markupMonospaced    :: a -> a,
+  markupUnorderedList :: [a] -> a,
+  markupOrderedList   :: [a] -> a,
+  markupDefList       :: [(a,a)] -> a,
+  markupCodeBlock     :: a -> a,
+  markupURL           :: String -> a,
+  markupAName         :: String -> a
+}