[Git][ghc/ghc][wip/haddock-iface-fixes] haddock: Keep track of instance source locations in `InstalledInterface` and use this to add

Zubin (@wz1000) gitlab at gitlab.haskell.org
Mon Jul 15 08:56:51 UTC 2024



Zubin pushed to branch wip/haddock-iface-fixes at Glasgow Haskell Compiler / GHC


Commits:
e543027d by Zubin Duggal at 2024-07-15T14:24:19+05:30
haddock: Keep track of instance source locations in `InstalledInterface` and use this to add
source locations on out of package instances

Fixes #24929

- - - - -


5 changed files:

- utils/haddock/haddock-api/src/Haddock.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Interface/AttachInstances.hs
- utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs
- utils/haddock/haddock-api/src/Haddock/Types.hs


Changes:

=====================================
utils/haddock/haddock-api/src/Haddock.hs
=====================================
@@ -433,16 +433,17 @@ render dflags parserOpts logger unit_state flags sinceQual qual ifaces packages
       = Map.insert k srcNameUrl pkgSrcMap
       | otherwise = pkgSrcMap
 
+    pkgSrcLMap = Map.map (hypSrcModuleUrlToLineFormat . hypSrcPkgUrlToModuleFormat)
+               $ Map.mapKeys moduleUnit extSrcMap
     -- These urls have a template for the module %M and the line %L
-    -- TODO: Get these from the interface files as with srcMap
     pkgSrcLMap'
       | Flag_HyperlinkedSource `elem` flags
       , Just k <- pkgKey
-      = Map.singleton k hypSrcModuleLineUrlFormat
+      = Map.insert k hypSrcModuleLineUrlFormat pkgSrcLMap
       | Just path <- srcLEntity
       , Just k <- pkgKey
-      = Map.singleton k path
-      | otherwise = Map.empty
+      = Map.insert k path pkgSrcLMap
+      | otherwise = pkgSrcLMap
 
     sourceUrls' = (srcBase, srcModule', pkgSrcMap', pkgSrcLMap')
 


=====================================
utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs
=====================================
@@ -14,6 +14,7 @@ module Haddock.Backends.Hyperlinker.Utils
   , hypSrcModuleNameUrlFormat
   , hypSrcModuleLineUrlFormat
   , hypSrcModuleUrlToNameFormat
+  , hypSrcModuleUrlToLineFormat
   , hypSrcPkgUrlToModuleFormat
   , spliceURL
   , spliceURL'
@@ -86,6 +87,9 @@ hypSrcModuleLineUrlFormat = hypSrcModuleUrlFormat ++ "#" ++ lineFormat
 hypSrcModuleUrlToNameFormat :: String -> String
 hypSrcModuleUrlToNameFormat url = url ++ "#" ++ nameFormat
 
+hypSrcModuleUrlToLineFormat :: String -> String
+hypSrcModuleUrlToLineFormat url = url ++ "#" ++ lineFormat
+
 hypSrcPkgUrlToModuleFormat :: String -> String
 hypSrcPkgUrlToModuleFormat url = url </> moduleFormat
 


=====================================
utils/haddock/haddock-api/src/Haddock/Interface/AttachInstances.hs
=====================================
@@ -143,10 +143,11 @@ attachInstances expInfo ifaces instIfaceMap isOneShot = do
     attach (cls_insts, fam_insts, inst_map) iface = do
       let getInstDoc = findInstDoc iface ifaceMap instIfaceMap
           getFixity = findFixity iface ifaceMap instIfaceMap
+          getInstLocIface name = Map.lookup name . instInstanceLocMap =<< Map.lookup (nameModule name) instIfaceMap
 
       newItems <-
         mapM
-          (attachToExportItem cls_insts fam_insts inst_map expInfo getInstDoc getFixity)
+          (attachToExportItem cls_insts fam_insts inst_map expInfo getInstDoc getFixity getInstLocIface)
           (ifaceExportItems iface)
       let orphanInstances = attachOrphanInstances expInfo getInstDoc (ifaceInstances iface) fam_insts
       return $
@@ -184,9 +185,11 @@ attachToExportItem
   -- ^ how to lookup the doc of an instance
   -> (Name -> Maybe Fixity)
   -- ^ how to lookup a fixity
+  -> (Name -> Maybe RealSrcSpan)
+  -- ^ how to lookup definition spans for instances
   -> ExportItem GhcRn
   -> Ghc (ExportItem GhcRn)
-attachToExportItem cls_index fam_index index expInfo getInstDoc getFixity export =
+attachToExportItem cls_index fam_index index expInfo getInstDoc getFixity getInstLocIface export =
   case attachFixities export of
     ExportDecl e@(ExportD{expDDecl = L eSpan (TyClD _ d)}) -> do
       insts <-
@@ -267,12 +270,17 @@ attachToExportItem cls_index fam_index index expInfo getInstDoc getFixity export
 
     -- spanName: attach the location to the name that is the same file as the instance location
     spanName s (InstHead{ihdClsName = clsn}) (L instL instn) =
-      let s1 = getSrcSpan s
+      let s1 = let orig_span = getSrcSpan s
+               in if isGoodSrcSpan orig_span
+                  then orig_span
+                  else case getInstLocIface s of
+                         Nothing -> orig_span
+                         Just rs -> RealSrcSpan rs mempty
           sn =
             if srcSpanFileName_maybe s1 == srcSpanFileName_maybe instL
               then instn
               else clsn
-       in L (getSrcSpan s) sn
+       in L s1 sn
     -- spanName on Either
     spanNameE s (Left e) _ = L (getSrcSpan s) (Left e)
     spanNameE s (Right ok) linst =


=====================================
utils/haddock/haddock-api/src/Haddock/InterfaceFile.hs
=====================================
@@ -36,6 +36,7 @@ module Haddock.InterfaceFile
   , binaryInterfaceVersionCompatibility
   ) where
 
+import Data.Coerce (coerce)
 import Data.Function ((&))
 import Data.IORef
 import Data.Map (Map)
@@ -367,6 +368,7 @@ instance Binary InstalledInterface where
         opts
         fixMap
         warnMap
+        locMap
       ) = do
       put_ bh modu
       put_ bh is_sig
@@ -378,6 +380,7 @@ instance Binary InstalledInterface where
       put_ bh opts
       put_ bh fixMap
       put_ bh warnMap
+      put_ bh (coerce @_ @(Map Name BinSpan) locMap)
 
   get bh = do
     modu <- get bh
@@ -390,6 +393,7 @@ instance Binary InstalledInterface where
     opts <- get bh
     fixMap <- get bh
     warnMap <- get bh
+    locMap <- get bh
     return
       ( InstalledInterface
           modu
@@ -403,6 +407,7 @@ instance Binary InstalledInterface where
           opts
           fixMap
           warnMap
+          (coerce @(Map Name BinSpan) locMap)
       )
 
 instance Binary DocOption where


=====================================
utils/haddock/haddock-api/src/Haddock/Types.hs
=====================================
@@ -48,16 +48,18 @@ import Control.Monad.Catch
 import Control.Monad.State.Strict
 import Data.Data (Data)
 import Data.Map (Map)
+import qualified Data.Map as Map
 import qualified Data.Set as Set
 import GHC
 import qualified GHC.Data.Strict as Strict
 import GHC.Driver.Session (Language)
 import qualified GHC.LanguageExtensions as LangExt
+import GHC.Core.InstEnv (is_dfun_name)
 import GHC.Types.Fixity (Fixity (..))
 import GHC.Types.Name (stableNameCmp)
 import GHC.Types.Name.Occurrence
 import GHC.Types.Name.Reader (RdrName (..))
-import GHC.Types.SrcLoc (BufPos (..), BufSpan (..))
+import GHC.Types.SrcLoc (BufPos (..), BufSpan (..), srcSpanToRealSrcSpan)
 import GHC.Types.Var (Specificity)
 import GHC.Utils.Outputable
 
@@ -167,6 +169,7 @@ data InstalledInterface = InstalledInterface
   -- ^ Haddock options for this module (prune, ignore-exports, etc).
   , instFixMap :: Map Name Fixity
   , instWarningMap :: WarningMap
+  , instInstanceLocMap :: Map Name RealSrcSpan
   }
 
 -- | Convert an 'Interface' to an 'InstalledInterface'
@@ -184,6 +187,7 @@ toInstalledIface interface =
     , instFixMap = interface.ifaceFixMap
     , instDefMeths = interface.ifaceDefMeths
     , instWarningMap = interface.ifaceWarningMap
+    , instInstanceLocMap = Map.fromList [(inst_name, loc) |  i <- interface.ifaceInstances, let inst_name = is_dfun_name i, Just loc <- [srcSpanToRealSrcSpan (nameSrcSpan inst_name)]]
     }
 
 -- | A monad in which we create Haddock interfaces. Not to be confused with



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e543027da1ec3e4471f222afd6349063d8760d53

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