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-rw-r--r--src/Haddock/Utils.hs98
1 files changed, 57 insertions, 41 deletions
diff --git a/src/Haddock/Utils.hs b/src/Haddock/Utils.hs
index ffbf7494..ab0d03b7 100644
--- a/src/Haddock/Utils.hs
+++ b/src/Haddock/Utils.hs
@@ -13,7 +13,7 @@
module Haddock.Utils (
-- * Misc utilities
- restrictTo,
+ restrictTo,
toDescription, toInstalledDescription,
-- * Filename utilities
@@ -31,12 +31,12 @@ module Haddock.Utils (
-- * Miscellaneous utilities
getProgramName, bye, die, dieMsg, noDieMsg, mapSnd, mapMaybeM, escapeStr,
-
+
-- * HTML cross reference mapping
html_xrefs_ref,
-- * Doc markup
- markup,
+ markup,
idMarkup,
-- * List utilities
@@ -45,7 +45,7 @@ module Haddock.Utils (
-- * MTL stuff
MonadIO(..),
-
+
-- * Logging
parseVerbosity,
out,
@@ -72,7 +72,7 @@ import Data.Maybe ( fromJust )
import System.Environment ( getProgName )
import System.Exit ( exitWith, ExitCode(..) )
import System.IO ( hPutStr, stderr )
-import System.IO.Unsafe ( unsafePerformIO )
+import System.IO.Unsafe ( unsafePerformIO )
import System.FilePath
import Distribution.Verbosity
import Distribution.ReadE
@@ -84,8 +84,9 @@ import qualified System.Posix.Internals
import MonadUtils ( MonadIO(..) )
--- -----------------------------------------------------------------------------
--- Logging
+--------------------------------------------------------------------------------
+-- * Logging
+--------------------------------------------------------------------------------
parseVerbosity :: String -> Either String Verbosity
@@ -102,8 +103,9 @@ out progVerbosity msgVerbosity msg
| otherwise = return ()
--- -----------------------------------------------------------------------------
--- Some Utilities
+--------------------------------------------------------------------------------
+-- * Some Utilities
+--------------------------------------------------------------------------------
-- | Extract a module's short description.
@@ -116,32 +118,33 @@ toInstalledDescription :: InstalledInterface -> Maybe (Doc Name)
toInstalledDescription = hmi_description . instInfo
--- ---------------------------------------------------------------------------
--- Making abstract declarations
+--------------------------------------------------------------------------------
+-- * Making abstract declarations
+--------------------------------------------------------------------------------
restrictTo :: [Name] -> LHsDecl Name -> LHsDecl Name
restrictTo names (L loc decl) = L loc $ case decl of
- TyClD d | isDataDecl d && tcdND d == DataType ->
- TyClD (d { tcdCons = restrictCons names (tcdCons d) })
- TyClD d | isDataDecl d && tcdND d == NewType ->
+ TyClD d | isDataDecl d && tcdND d == DataType ->
+ TyClD (d { tcdCons = restrictCons names (tcdCons d) })
+ TyClD d | isDataDecl d && tcdND d == NewType ->
case restrictCons names (tcdCons d) of
- [] -> TyClD (d { tcdND = DataType, tcdCons = [] })
+ [] -> TyClD (d { tcdND = DataType, tcdCons = [] })
[con] -> TyClD (d { tcdCons = [con] })
_ -> error "Should not happen"
- TyClD d | isClassDecl d ->
+ TyClD d | isClassDecl d ->
TyClD (d { tcdSigs = restrictDecls names (tcdSigs d),
tcdATs = restrictATs names (tcdATs d) })
_ -> decl
-
+
restrictCons :: [Name] -> [LConDecl Name] -> [LConDecl Name]
-restrictCons names decls = [ L p d | L p (Just d) <- map (fmap keep) decls ]
- where
- keep d | unLoc (con_name d) `elem` names =
+restrictCons names decls = [ L p d | L p (Just d) <- map (fmap keep) decls ]
+ where
+ keep d | unLoc (con_name d) `elem` names =
case con_details d of
PrefixCon _ -> Just d
- RecCon fields
+ RecCon fields
| all field_avail fields -> Just d
| otherwise -> Just (d { con_details = PrefixCon (field_types fields) })
-- if we have *all* the field names available, then
@@ -151,8 +154,8 @@ restrictCons names decls = [ L p d | L p (Just d) <- map (fmap keep) decls ]
InfixCon _ _ -> Just d
where
field_avail (ConDeclField n _ _) = unLoc n `elem` names
- field_types flds = [ t | ConDeclField _ t _ <- flds ]
-
+ field_types flds = [ t | ConDeclField _ t _ <- flds ]
+
keep _ | otherwise = Nothing
@@ -166,8 +169,9 @@ restrictATs :: [Name] -> [LTyClDecl Name] -> [LTyClDecl Name]
restrictATs names ats = [ at | at <- ats , tcdName (unL at) `elem` names ]
--- -----------------------------------------------------------------------------
--- Filename mangling functions stolen from s main/DriverUtil.lhs.
+--------------------------------------------------------------------------------
+-- * Filename mangling functions stolen from s main/DriverUtil.lhs.
+--------------------------------------------------------------------------------
moduleHtmlFile :: Module -> FilePath
@@ -176,7 +180,7 @@ moduleHtmlFile mdl =
Nothing -> mdl' ++ ".html"
Just fp0 -> joinPath [fp0, mdl' ++ ".html"]
where
- mdl' = map (\c -> if c == '.' then '-' else c)
+ mdl' = map (\c -> if c == '.' then '-' else c)
(moduleNameString (moduleName mdl))
@@ -205,8 +209,8 @@ subIndexHtmlFile a = "doc-index-" ++ b ++ ".html"
| otherwise = show (ord a)
--- -----------------------------------------------------------------------------
--- Anchor and URL utilities
+-------------------------------------------------------------------------------
+-- * Anchor and URL utilities
--
-- NB: Anchor IDs, used as the destination of a link within a document must
-- conform to XML's NAME production. That, taken with XHTML and HTML 4.01's
@@ -216,18 +220,23 @@ subIndexHtmlFile a = "doc-index-" ++ b ++ ".html"
-- of a URL. Indeed, %-escaping them can lead to compatibility issues as it
-- isn't clear if such fragment identifiers should, or should not be unescaped
-- before being matched with IDs in the target document.
+-------------------------------------------------------------------------------
+
moduleUrl :: Module -> String
moduleUrl = moduleHtmlFile
-moduleNameUrl :: Module -> OccName -> String
+
+moduleNameUrl :: Module -> OccName -> String
moduleNameUrl mdl n = moduleUrl mdl ++ '#' : nameAnchorId n
+
nameAnchorId :: OccName -> String
nameAnchorId name = makeAnchorId (prefix : ':' : occNameString name)
- where prefix | isValOcc name = 'v'
+ where prefix | isValOcc name = 'v'
| otherwise = 't'
+
-- | Takes an arbitrary string and makes it a valid anchor ID. The mapping is
-- identity preserving.
makeAnchorId :: String -> String
@@ -242,8 +251,10 @@ makeAnchorId (f:r) = escape isAlpha f ++ concatMap (escape isLegal) r
isLegal c = isAscii c && isAlphaNum c
-- NB: '-' is legal in IDs, but we use it as the escape char
--- -----------------------------------------------------------------------------
--- Files we need to copy from our $libdir
+
+-------------------------------------------------------------------------------
+-- * Files we need to copy from our $libdir
+-------------------------------------------------------------------------------
cssFile, iconFile, jsFile, plusFile, minusFile, framesFile :: String
@@ -255,8 +266,9 @@ minusFile = "minus.gif"
framesFile = "frames.html"
------------------------------------------------------------------------------
--- misc.
+-------------------------------------------------------------------------------
+-- * Misc.
+-------------------------------------------------------------------------------
getProgramName :: IO String
@@ -331,14 +343,15 @@ isAlphaNumChar c = isAlphaChar c || isDigitChar c
-----------------------------------------------------------------------------
--- HTML cross references
-
+-- * HTML cross references
+--
-- For each module, we need to know where its HTML documentation lives
-- so that we can point hyperlinks to it. It is extremely
-- inconvenient to plumb this information to all the places that need
-- it (basically every function in HaddockHtml), and furthermore the
-- mapping is constant for any single run of Haddock. So for the time
-- being I'm going to use a write-once global variable.
+-----------------------------------------------------------------------------
{-# NOINLINE html_xrefs_ref #-}
@@ -352,12 +365,12 @@ html_xrefs = unsafePerformIO (readIORef html_xrefs_ref)
-----------------------------------------------------------------------------
--- List utils
+-- * List utils
-----------------------------------------------------------------------------
replace :: Eq a => a -> a -> [a] -> [a]
-replace a b = map (\x -> if x == a then b else x)
+replace a b = map (\x -> if x == a then b else x)
spanWith :: (a -> Maybe b) -> [a] -> ([b],[a])
spanWith _ [] = ([],[])
@@ -365,8 +378,10 @@ spanWith p xs@(a:as)
| Just b <- p a = let (bs,cs) = spanWith p as in (b:bs,cs)
| otherwise = ([],xs)
+
+-----------------------------------------------------------------------------
+-- * Put here temporarily
-----------------------------------------------------------------------------
--- put here temporarily
markup :: DocMarkup id a -> Doc id -> a
@@ -414,8 +429,9 @@ idMarkup = Markup {
}
--- -----------------------------------------------------------------------------
--- System tools
+-----------------------------------------------------------------------------
+-- * System tools
+-----------------------------------------------------------------------------
#ifdef mingw32_HOST_OS
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