Scripting.Lua.Aeson

Glue to hslua for aeson values.

This provides a StackValue instance for aeson's Value type. The following conventions are used:

• Null values are encoded as the special global _NULL. Using Nil would cause problems with null-containing arrays.
• Objects are converted to tables in a straight-forward way.
• Arrays are converted to lua tables. Array-length is included as the value at index 0. This makes it possible to distinguish between empty arrays and empty objects.

Documentation

module Scripting.Lua

newstate :: IO LuaState

Create a new lua state suitable for use with aeson values. This behaves like newstate in hslua, but initializes the _NULL global. That variable is used to encode null values.

Orphan instances

StackValue Scientific

Methods

push :: LuaState -> Scientific -> IO ()

peek :: LuaState -> Int -> IO (Maybe Scientific)

valuetype :: Scientific -> LTYPE

StackValue Text

Methods

push :: LuaState -> Text -> IO ()

peek :: LuaState -> Int -> IO (Maybe Text)

valuetype :: Text -> LTYPE

StackValue Value

Hslua StackValue instance for the Aeson Value data type.

Methods

push :: LuaState -> Value -> IO ()

peek :: LuaState -> Int -> IO (Maybe Value)

valuetype :: Value -> LTYPE

StackValue a => StackValue (Vector a)

Methods

push :: LuaState -> Vector a -> IO ()

peek :: LuaState -> Int -> IO (Maybe (Vector a))

valuetype :: Vector a -> LTYPE

(Eq a, Hashable a, StackValue a, StackValue b) => StackValue (HashMap a b)

Methods

push :: LuaState -> HashMap a b -> IO ()

peek :: LuaState -> Int -> IO (Maybe (HashMap a b))

valuetype :: HashMap a b -> LTYPE