import Util
import Maybes
import FastString
+import PackageConfig
+import Module
+
+import Data.Char
+import Data.Word
\end{code}
dataConName :: DataCon -> Name
dataConName = dcName
--- generate a name in the format: package:Module.OccName
--- and the unique identity of the name
-dataConIdentity :: DataCon -> String
-dataConIdentity dataCon
- = prettyName
- where
- prettyName = pretty packageModule ++ "." ++ pretty occ
- nm = getName dataCon
- packageModule = nameModule nm
- occ = getOccName dataCon
- pretty :: Outputable a => a -> String
- pretty = showSDoc . ppr
-
dataConTag :: DataCon -> ConTag
dataConTag = dcTag
dataConRepArgTys dc = dcRepArgTys dc
\end{code}
+The string <package>:<module>.<name> identifying a constructor, which is attached
+to its info table and used by the GHCi debugger and the heap profiler. We want
+this string to be UTF-8, so we get the bytes directly from the FastStrings.
+
+\begin{code}
+dataConIdentity :: DataCon -> [Word8]
+dataConIdentity dc = bytesFS (packageIdFS (modulePackageId mod)) ++
+ fromIntegral (ord ':') : bytesFS (moduleNameFS (moduleName mod)) ++
+ fromIntegral (ord '.') : bytesFS (occNameFS (nameOccName name))
+ where name = dataConName dc
+ mod = nameModule name
+\end{code}
+
\begin{code}
isTupleCon :: DataCon -> Bool