Add some utility definitions for generating line anchors.

1 files changed, 23 insertions, 2 deletions

diff --git a/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs b/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs
index db2bfc76..9de4a03d 100644
--- a/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs
+++ b/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs
@@ -1,13 +1,18 @@
 module Haddock.Backends.Hyperlinker.Utils
     ( hypSrcDir, hypSrcModuleFile, hypSrcModuleFile'
-    , hypSrcModuleUrl, hypSrcModuleUrl', hypSrcNameUrl, hypSrcModuleNameUrl
-    , hypSrcModuleUrlFormat, hypSrcModuleNameUrlFormat,
+    , hypSrcModuleUrl, hypSrcModuleUrl'
+    , hypSrcNameUrl
+    , hypSrcLineUrl
+    , hypSrcModuleNameUrl, hypSrcModuleLineUrl
+    , hypSrcModuleUrlFormat
+    , hypSrcModuleNameUrlFormat, hypSrcModuleLineUrlFormat
     ) where
 
 
 import Haddock.Backends.Xhtml.Utils
 
 import GHC
+import FastString
 import System.FilePath.Posix ((</>))
 
 
@@ -31,17 +36,33 @@ hypSrcNameUrl :: Name -> String
 hypSrcNameUrl name = spliceURL
     Nothing Nothing (Just name) Nothing nameFormat
 
+hypSrcLineUrl :: Int -> String
+hypSrcLineUrl line = spliceURL
+    Nothing Nothing Nothing (Just spn) lineFormat
+  where
+    loc = mkSrcLoc nilFS line 1
+    spn = mkSrcSpan loc loc
+
 hypSrcModuleNameUrl :: Module -> Name -> String
 hypSrcModuleNameUrl mdl name = hypSrcModuleUrl mdl ++ "#" ++ hypSrcNameUrl name
 
+hypSrcModuleLineUrl :: Module -> Int -> String
+hypSrcModuleLineUrl mdl line = hypSrcModuleUrl mdl ++ "#" ++ hypSrcLineUrl line
+
 hypSrcModuleUrlFormat :: String
 hypSrcModuleUrlFormat = hypSrcDir </> moduleFormat
 
 hypSrcModuleNameUrlFormat :: String
 hypSrcModuleNameUrlFormat = hypSrcModuleUrlFormat ++ "#" ++ nameFormat
 
+hypSrcModuleLineUrlFormat :: String
+hypSrcModuleLineUrlFormat = hypSrcModuleUrlFormat ++ "#" ++ lineFormat
+
 moduleFormat :: String
 moduleFormat = "%{MODULE}.html"
 
 nameFormat :: String
 nameFormat = "%{NAME}"
+
+lineFormat :: String
+lineFormat = "line-%{LINE}"