Modulelua-2.3.4Haskell2010

Lua.Userdata

Bindings to HsLua-specific functions used to push Haskell values as userdata.

4 values

Packagelua-2.3.4
Exports4
LanguageHaskell2010
LicenceMIT
SourceUserdata.hs

valuehslua_fromuserdata

:: State
-> StackIndex
userdata index
-> CString
name
-> IO (Maybe a)

Retrieves a Haskell object from userdata at the given index. The userdata must have the given name.

valuehslua_newhsuserdatauv

:: State
-> a
value to be wrapped
-> CInt
nuvalue
-> IO ()

Creates a new userdata wrapping the given Haskell object, with nuvalue associated Lua values (uservalues).

valuehslua_newudmetatable

:: State
Lua state
-> CString
Userdata name (__name)
-> IO LuaBool
True iff new metatable was created.

Creates and registers a new metatable for a userdata-wrapped Haskell value; checks whether a metatable of that name has been registered yet and uses the registered table if possible.

valuehslua_putuserdata

:: State
-> StackIndex
index
-> CString
name
-> a
new Haskell value
-> IO Bool

Replaces the Haskell value contained in the userdata value at index. Checks that the userdata is of type name and returns True on success, or False otherwise.