GHC.HsToCore.Docs

Extract docs from the renamer output so they can be serialized.

Documentation

extractDocs

Arguments

:: MonadIO m

=> TcGblEnv

-> m (Maybe HsDocString, DeclDocMap, ArgDocMap)

1. Module header
2. Docs on top level declarations
3. Docs on arguments

Extract docs from renamer output. This is monadic since we need to be able to read documentation added from Template Haskell's putDoc, which is stored in tcg_th_docs.

mkMaps :: [Name] -> [(LHsDecl GhcRn, [HsDocString])] -> (Map Name HsDocString, Map Name (IntMap HsDocString))

Create decl and arg doc-maps by looping through the declarations. For each declaration, find its names, its subordinates, and its doc strings.

getMainDeclBinder :: (Anno (IdGhcP p) ~ SrcSpanAnnN, CollectPass (GhcPass p)) => HsDecl (GhcPass p) -> [IdP (GhcPass p)]

sigNameNoLoc :: forall pass. UnXRec pass => Sig pass -> [IdP pass]

getInstLoc :: Anno (IdGhcP p) ~ SrcSpanAnnN => InstDecl (GhcPass p) -> SrcSpan

subordinates :: Map RealSrcSpan Name -> HsDecl GhcRn -> [(Name, [HsDocString], IntMap HsDocString)]

Get all subordinate declarations inside a declaration, and their docs. A subordinate declaration is something like the associate type or data family of a type class.

conArgDocs :: ConDecl GhcRn -> IntMap HsDocString

Extract constructor argument docs from inside constructor decls.

h98ConArgDocs :: HsConDeclH98Details GhcRn -> IntMap HsDocString

gadtConArgDocs :: HsConDeclGADTDetails GhcRn -> HsType GhcRn -> IntMap HsDocString

con_arg_docs :: Int -> [HsType GhcRn] -> IntMap HsDocString

isValD :: HsDecl a -> Bool

classDecls :: TyClDecl GhcRn -> [(LHsDecl GhcRn, [HsDocString])]

All the sub declarations of a class (that we handle), ordered by source location, with documentation attached if it exists.

declTypeDocs :: HsDecl GhcRn -> IntMap HsDocString

Extract function argument docs from inside top-level decls.

nubByName :: (a -> Name) -> [a] -> [a]

typeDocs :: HsType GhcRn -> IntMap HsDocString

Extract function argument docs from inside types.

sigTypeDocs :: HsSigType GhcRn -> IntMap HsDocString

Extract function argument docs from inside types.

topDecls :: HsGroup GhcRn -> [(LHsDecl GhcRn, [HsDocString])]

The top-level declarations of a module that we care about, ordered by source location, with documentation attached if it exists.

ungroup :: HsGroup GhcRn -> [LHsDecl GhcRn]

Take all declarations except pragmas, infix decls, rules from an HsGroup.

collectDocs :: forall p. UnXRec p => [LHsDecl p] -> [(LHsDecl p, [HsDocString])]

Collect docs and attach them to the right declarations.

A declaration may have multiple doc strings attached to it.

This is an example.

filterDecls :: forall p doc. UnXRec p => [(LHsDecl p, doc)] -> [(LHsDecl p, doc)]

Filter out declarations that we don't handle in Haddock

filterClasses :: forall p doc. IsPass p => [(LHsDecl (GhcPass p), doc)] -> [(LHsDecl (GhcPass p), doc)]

Go through all class declarations and filter their sub-declarations

isUserSig :: Sig name -> Bool

Was this signature given by the user?

mkDecls :: (struct -> [GenLocated l decl]) -> (decl -> hsDecl) -> struct -> [GenLocated l hsDecl]

Take a field of declarations from a data structure and create HsDecls using the given constructor

extractTHDocs :: THDocs -> ExtractedTHDocs

Extracts out individual maps of documentation added via Template Haskell's putDoc.

unionArgMaps :: Map Name (IntMap b) -> Map Name (IntMap b) -> Map Name (IntMap b)

Unions together two ArgDocMaps (or ArgMaps in haddock-api), such that two maps with values for the same key merge the inner map as well. Left biased so unionArgMaps a b prefers a over b.