@since includes package name (#749)

* Metadoc stores a package name

This means that '@since' annotations can be package aware.

* Get the package name the right way

This should extract the package name for `@since` annotations the
right way. I had to move `modulePackageInfo` around to do this and,
in the process, I took the liberty to update it.

Since it appears that finding the package name is something that can
fail, I added a warning for this case.

* Silence warnings

* Hide package for local 'since' annotations

As discussed, this is still the usual case (and we should avoid being
noisy for it).

Although this commit is large, it is basically only about threading a
'Maybe Package' from 'Haddock.render' all the way to
'Haddock.Backends.Xhtml.DocMarkup.renderMeta'.

* Bump binary interface version

* Add a '--since-qual' option

This controls when to qualify since annotations with the package they
come from. The default is always, but I've left an 'external' variant
where only those annotations coming from outside of the current
package are qualified.

* Make ParserSpec work

* Make Fixtures work

* Use package name even if package version is not available

The @since stuff needs only the package name passed in, so it
makes sense to not be forced to pass in a version too.

1 files changed, 3 insertions, 3 deletions

diff --git a/haddock-api/src/Haddock/Interface/ParseModuleHeader.hs b/haddock-api/src/Haddock/Interface/ParseModuleHeader.hs
index 6690c22d..050901b6 100644
--- a/haddock-api/src/Haddock/Interface/ParseModuleHeader.hs
+++ b/haddock-api/src/Haddock/Interface/ParseModuleHeader.hs
@@ -24,8 +24,8 @@ import RdrName
 -- NB.  The headers must be given in the order Module, Description,
 -- Copyright, License, Maintainer, Stability, Portability, except that
 -- any or all may be omitted.
-parseModuleHeader :: DynFlags -> String -> (HaddockModInfo RdrName, MDoc RdrName)
-parseModuleHeader dflags str0 =
+parseModuleHeader :: DynFlags -> Maybe Package -> String -> (HaddockModInfo RdrName, MDoc RdrName)
+parseModuleHeader dflags pkgName str0 =
    let
       getKey :: String -> String -> (Maybe String,String)
       getKey key str = case parseKey key str of
@@ -52,7 +52,7 @@ parseModuleHeader dflags str0 =
           hmi_safety = Nothing,
           hmi_language = Nothing, -- set in LexParseRn
           hmi_extensions = [] -- also set in LexParseRn
-          }, parseParas dflags str9)
+          }, parseParas dflags pkgName str9)
 
 -- | This function is how we read keys.
 --