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|
--
-- Haddock - A Haskell Documentation Tool
--
-- (c) Simon Marlow 2003
--
module Haddock.Types where
import Data.Map (Map)
import qualified Data.Map as Map
import GHC hiding (NoLink)
import Outputable
{-! for DocOption derive: Binary !-}
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 {
-- | The original name
expItemName :: Name,
-- | A declaration
expItemDecl :: LHsDecl name,
-- | Maybe a doc comment
expItemMbDoc :: Maybe (HsDoc name),
-- | Instances relevant to this declaration
expItemInstances :: [InstHead name]
} -- ^ An exported declaration
| ExportNoDecl {
-- | The original name
expItemName :: Name,
-- | Where to link to
expItemLinkTarget :: name,
-- | Subordinate names
expItemSubs :: [name]
} -- ^ An exported entity for which we have no
-- documentation (perhaps because it resides in
-- another package)
| ExportGroup {
-- | Section level (1, 2, 3, ... )
expItemSectionLevel :: Int,
-- | Section id (for hyperlinks)
expItemSectionId :: String,
-- | Section heading text
expItemSectionText :: HsDoc name
} -- ^ A section heading
| ExportDoc (HsDoc name) -- ^ Some documentation
| ExportModule Module -- ^ A cross-reference to another module
type InstHead name = ([HsPred name], name, [HsType name])
type ModuleMap = Map Module Interface
type DocMap = Map Name (HsDoc DocName)
type LinkEnv = Map Name Name
{-! for DocName derive: Binary !-}
data DocName = Link Name | NoLink Name
instance Outputable DocName where
ppr (Link n) = ppr n
ppr (NoLink n) = ppr n
instance NamedThing DocName where
getName (Link n) = n
getName (NoLink n) = n
-- | This structure holds the module information we get from GHC's
-- type checking phase
data GhcModule = GhcModule {
ghcModule :: Module,
ghcFilename :: FilePath,
ghcMbDocOpts :: Maybe String,
ghcHaddockModInfo :: HaddockModInfo Name,
ghcMbDoc :: Maybe (HsDoc Name),
ghcGroup :: HsGroup Name,
ghcMbExports :: Maybe [LIE Name],
ghcExportedNames :: [Name],
ghcNamesInScope :: [Name],
ghcInstances :: [Instance]
}
-- | This is the data structure used to render a Haddock page for a module - it
-- is the "interface" of the module. The core of Haddock lies in creating this
-- structure (see Haddock.Interface). The structure also holds intermediate
-- data needed during its creation.
data Interface = Interface {
-- | The documented module
ifaceMod :: Module,
-- | The original filename for this module
ifaceOrigFilename :: FilePath,
-- | Textual information about the module
ifaceInfo :: HaddockModInfo Name,
-- | The documentation header for this module
ifaceDoc :: Maybe (HsDoc Name),
-- | The renamed documentation header for this module
ifaceRnDoc :: Maybe (HsDoc DocName),
-- | The Haddock options for this module (prune, ignore-exports, etc)
ifaceOptions :: [DocOption],
ifaceExportedDeclMap :: Map Name (LHsDecl Name),
ifaceDocMap :: Map Name (HsDoc Name),
ifaceRnDocMap :: Map Name (HsDoc DocName),
ifaceExportItems :: [ExportItem Name],
ifaceRnExportItems :: [ExportItem DocName],
-- | All the names that are defined in this module
ifaceLocals :: [Name],
-- | All the names that are exported by this module
ifaceExports :: [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.
ifaceVisibleExports :: [Name],
ifaceSubMap :: Map Name [Name],
-- | The instances exported by this module
ifaceInstances :: [Instance]
}
-- | A smaller version of 'Interface' that we can get from the Haddock
-- interface files.
data InstalledInterface = InstalledInterface {
instMod :: Module,
instInfo :: HaddockModInfo Name,
instDocMap :: Map Name (HsDoc DocName),
instExports :: [Name],
instVisibleExports :: [Name]
}
-- | Convert an 'Interface' to an 'InstalledInterface'
toInstalledIface :: Interface -> InstalledInterface
toInstalledIface interface = InstalledInterface {
instMod = ifaceMod interface,
instInfo = ifaceInfo interface,
instDocMap = ifaceRnDocMap interface,
instExports = ifaceExports interface,
instVisibleExports = ifaceVisibleExports interface
}
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
}
-- A monad which collects error messages, locally defined to avoid a dep on mtl
type ErrMsg = String
newtype ErrMsgM a = Writer { runWriter :: (a, [ErrMsg]) }
instance Monad ErrMsgM where
return a = Writer (a, [])
m >>= k = Writer $ let
(a, w) = runWriter m
(b, w') = runWriter (k a)
in (b, w ++ w')
tell :: [ErrMsg] -> ErrMsgM ()
tell w = Writer ((), w)
|
