/// <summary>
/// Clears all of the key-value pairs.
/// </summary>
public void Clear()
{
PushOnto(Lua.MainState);
LuaApi.PushNil(Lua.MainState);
while (LuaApi.Next(Lua.MainState, -2))
{
LuaApi.Pop(Lua.MainState, 1);
LuaApi.PushValue(Lua.MainState, -1);
LuaApi.PushNil(Lua.MainState);
LuaApi.SetTable(Lua.MainState, -4);
}
LuaApi.Pop(Lua.MainState, 1);
}
internal object ToObject(int index, LuaType?typeHint = null, IntPtr?stateOverride = null)
{
var state = stateOverride ?? MainState;
Debug.Assert(LuaApi.GetMainState(state) == MainState, "State override did not match main state.");
var type = typeHint ?? LuaApi.Type(state, index);
Debug.Assert(type == LuaApi.Type(state, index), "Type hint did not match type.");
switch (type)
{
case LuaType.None:
case LuaType.Nil:
return(null);
case LuaType.Boolean:
return(LuaApi.ToBoolean(state, index));
case LuaType.Number:
var isInteger = LuaApi.IsInteger(state, index);
return(isInteger ? LuaApi.ToInteger(state, index) : (object)LuaApi.ToNumber(state, index));
case LuaType.String:
return(LuaApi.ToString(state, index));
case LuaType.Userdata:
var handle = LuaApi.ToHandle(state, index);
return(handle.Target);
}
LuaReference luaReference = null;
var pointer = LuaApi.ToPointer(state, index);
if (_cachedLuaReferences.TryGetValue(pointer, out var weakReference))
{
luaReference = (LuaReference)weakReference.Target;
if (luaReference != null)
{
return(luaReference);
}
}
LuaApi.PushValue(state, index);
var referenceId = LuaApi.Ref(state, LuaApi.RegistryIndex);
switch (type)
{
case LuaType.Table:
luaReference = new LuaTable(this, referenceId);
break;
case LuaType.Function:
luaReference = new LuaFunction(this, referenceId);
break;
case LuaType.Thread:
luaReference = new LuaThread(this, referenceId, pointer);
break;
}
if (weakReference != null)
{
weakReference.Target = luaReference;
}
else
{
_cachedLuaReferences[pointer] = new WeakReference(luaReference);
}
_pointerToReferenceId[pointer] = referenceId;
return(luaReference);
}