diff options
Diffstat (limited to 'haddock-api/src/Haddock/Backends')
| -rw-r--r-- | haddock-api/src/Haddock/Backends/Xhtml/Decl.hs | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs index af946f9f..35e5c5f6 100644 --- a/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs +++ b/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs @@ -1,5 +1,6 @@ {-# LANGUAGE TransformListComp #-} {-# LANGUAGE RecordWildCards #-} +{-# LANGUAGE Rank2Types #-} ----------------------------------------------------------------------------- -- | -- Module : Haddock.Backends.Html.Decl @@ -26,8 +27,11 @@ import Haddock.Backends.Xhtml.Types import Haddock.Backends.Xhtml.Utils import Haddock.GhcUtils import Haddock.Types +import Haddock.Syb import Haddock.Doc (combineDocumentation) +import Data.Bits +import Data.Data (Data, cast) import Data.List ( intersperse, sort ) import qualified Data.Map as Map import Data.Maybe @@ -35,6 +39,7 @@ import Text.XHtml hiding ( name, title, p, quote ) import GHC import GHC.Exts +import Unique import Name import BooleanFormula @@ -553,7 +558,7 @@ ppInstances links origin instances baseName splice unicode qual ppInstHead :: LinksInfo -> Splice -> Unicode -> Qualification -> Maybe (MDoc DocName) -> InstOrigin -> Int -> InstHead DocName -> SubDecl -ppInstHead links splice unicode qual mdoc origin no (InstHead {..}) = +ppInstHead links splice unicode qual mdoc origin no ihd@(InstHead {..}) = case ihdInstType of ClassInst { .. } -> ( subInstHead iid $ ppContextNoLocs clsiCtx unicode qual <+> typ @@ -561,7 +566,7 @@ ppInstHead links splice unicode qual mdoc origin no (InstHead {..}) = , [subInstDetails iid ats sigs] ) where - iid = instanceId origin no ihdClsName + iid = instanceId origin no ihd sigs = ppInstanceSigs links splice unicode qual clsiSigs ats = ppInstanceAssocTys links splice unicode qual clsiAssocTys TypeInst rhs -> @@ -600,15 +605,39 @@ lookupAnySubdoc :: Eq id1 => id1 -> [(id1, DocForDecl id2)] -> DocForDecl id2 lookupAnySubdoc n = fromMaybe noDocForDecl . lookup n -instanceId :: InstOrigin -> Int -> DocName -> String -instanceId orgin no name = - qual orgin ++ ":" ++ (occNameString . getOccName) name ++ "-" ++ show no +instanceId :: InstOrigin -> Int -> InstHead DocName -> String +instanceId orgin no ihd = concat + [ qual orgin + , ":" ++ (occNameString . getOccName . ihdClsName) ihd + , "-" ++ show (instHeadId ihd) + , "-" ++ show no + ] where qual OriginClass = "ic" qual OriginData = "id" qual OriginFamily = "if" +-- | Compute unique identifier for given instance. +-- +-- This is rather poor way of doing it. Ideally, we would like to have +-- everything wrapped in a stateful monad that allows us to generate unique +-- identifiers as needed. Since introducing such monad would require major +-- refactoring, for now we just generate naive hash for given instance. +-- +-- Hashing is very, very trivial and turns a list of 'DocName' to 'Int'. Idea +-- for such simple hash function is stolen from +-- <http://stackoverflow.com/questions/9262879/create-a-unique-integer-for-each-string here>. +instHeadId :: InstHead DocName -> Int +instHeadId (InstHead { .. }) = + djb2 . map key $ [ihdClsName] ++ names ihdTypes ++ names ihdKinds + where + names = everything (++) $ + maybeToList . (cast :: forall a. Data a => a -> Maybe DocName) + djb2 = foldl (\h c -> h * 33 `xor` c) 5381 + key = getKey . nameUnique . getName + + ------------------------------------------------------------------------------- -- * Data & newtype declarations ------------------------------------------------------------------------------- |