Foreign.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

registerNull :: Lua ()

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

ToLuaStack Scientific

Methods

push :: Scientific -> Lua ()

ToLuaStack Value

Hslua StackValue instance for the Aeson Value data type.

Methods

push :: Value -> Lua ()

FromLuaStack Scientific

Methods

peek :: StackIndex -> Lua Scientific

FromLuaStack Value

Methods

peek :: StackIndex -> Lua Value

ToLuaStack a => ToLuaStack (Vector a)

Methods

push :: Vector a -> Lua ()

FromLuaStack a => FromLuaStack (Vector a)

Methods

peek :: StackIndex -> Lua (Vector a)

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

Methods

push :: HashMap a b -> Lua ()

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

Methods

peek :: StackIndex -> Lua (HashMap a b)