Differentiate between TH splices (line-links) and regular names

This adds a new type of source code link, to a specific line rather than
a specific declaration/name - this is used to link to the location of a
TH splice that defines a certain name.

Rather hefty changes throughout and still one unresolved issue (the line
URLs aren't parsed from the third form of --read-interface which means
they're currently restricted to same-interface links). Not sure if
this issue is really worth all the hassle, especially since we could
just use line links in general.

This commit also contains some cleanup/clarification of the types in
Haddock.Backends.Xhtml.Decl and shortens some overlong lines in the
process. Notably, the Bool parameter was replaced by a Unicode type
synonym to help clarify its presence in type signatures.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/Haddock/Interface/Rename.hs b/src/Haddock/Interface/Rename.hs
index 4bf39dfb..a5cde195 100644
--- a/src/Haddock/Interface/Rename.hs
+++ b/src/Haddock/Interface/Rename.hs
@@ -477,7 +477,7 @@ renameExportItem item = case item of
   ExportGroup lev id_ doc -> do
     doc' <- renameDoc doc
     return (ExportGroup lev id_ doc')
-  ExportDecl decl doc subs instances fixities -> do
+  ExportDecl decl doc subs instances fixities splice -> do
     decl' <- renameLDecl decl
     doc'  <- renameDocForDecl doc
     subs' <- mapM renameSub subs
@@ -488,7 +488,7 @@ renameExportItem item = case item of
     fixities' <- forM fixities $ \(name, fixity) -> do
       name' <- lookupRn name
       return (name', fixity)
-    return (ExportDecl decl' doc' subs' instances' fixities')
+    return (ExportDecl decl' doc' subs' instances' fixities' splice)
   ExportNoDecl x subs -> do
     x'    <- lookupRn x
     subs' <- mapM lookupRn subs