/*
* Calls the provided function with the provided parameters
*/
public static object callFunction( LuaFunction function, object[] args, Type[] returnTypes, object[] inArgs, int[] outArgs )
{
// args is the return array of arguments, inArgs is the actual array
// of arguments passed to the function (with in parameters only), outArgs
// has the positions of out parameters
object returnValue;
int iRefArgs;
object[] returnValues = function.call( inArgs, returnTypes );
if ( returnTypes[0] == typeof( void ) )
{
returnValue = null;
iRefArgs = 0;
}
else
{
returnValue = returnValues[0];
iRefArgs = 1;
}
for ( int i = 0; i < outArgs.Length; i++ )
{
args[outArgs[i]] = returnValues[iRefArgs];
iRefArgs++;
}
return returnValue;
}
public LuaDelegate()
{
function = null;
returnTypes = null;
}
/*
* Gets a delegate with delegateType that calls the luaFunc Lua function
* Caches the generated type.
*/
public Delegate GetDelegate( Type delegateType, LuaFunction luaFunc )
{
List<Type> returnTypes = new List<Type>();
Type luaDelegateType;
if ( delegateCollection.ContainsKey( delegateType ) )
{
luaDelegateType = delegateCollection[delegateType];
}
else
{
luaDelegateType = GenerateDelegate( delegateType );
delegateCollection[delegateType] = luaDelegateType;
}
MethodInfo methodInfo = delegateType.GetMethod( "Invoke" );
returnTypes.Add( methodInfo.ReturnType );
foreach ( ParameterInfo paramInfo in methodInfo.GetParameters() )
if ( paramInfo.ParameterType.IsByRef )
returnTypes.Add( paramInfo.ParameterType );
LuaDelegate luaDelegate = (LuaDelegate)Activator.CreateInstance( luaDelegateType );
luaDelegate.function = luaFunc;
luaDelegate.returnTypes = returnTypes.ToArray();
return Delegate.CreateDelegate( delegateType, luaDelegate, "CallFunction" );
}
/*
* Adds a new event handler
*/
public Delegate Add( LuaFunction function )
{
//CP: Fix by Ben Bryant for event handling with one parameter
//link: http://luaforge.net/forum/message.php?msg_id=9266
Delegate handlerDelegate = CodeGeneration.Instance.GetDelegate( eventInfo.EventHandlerType, function );
eventInfo.AddEventHandler( target, handlerDelegate );
pendingEvents.Add( handlerDelegate, this );
return handlerDelegate;
//MethodInfo mi = eventInfo.EventHandlerType.GetMethod("Invoke");
//ParameterInfo[] pi = mi.GetParameters();
//LuaEventHandler handler=CodeGeneration.Instance.GetEvent(pi[1].ParameterType,function);
//Delegate handlerDelegate=Delegate.CreateDelegate(eventInfo.EventHandlerType,handler,"HandleEvent");
//eventInfo.AddEventHandler(target,handlerDelegate);
//pendingEvents.Add(handlerDelegate, this);
//return handlerDelegate;
}
/*
* Gets an event handler for the event type that delegates to the eventHandler Lua function.
* Caches the generated type.
*/
public LuaEventHandler GetEvent( Type eventHandlerType, LuaFunction eventHandler )
{
Type eventConsumerType;
if ( eventHandlerCollection.ContainsKey( eventHandlerType ) )
{
eventConsumerType = eventHandlerCollection[eventHandlerType];
}
else
{
eventConsumerType = GenerateEvent( eventHandlerType );
eventHandlerCollection[eventHandlerType] = eventConsumerType;
}
LuaEventHandler luaEventHandler = (LuaEventHandler)Activator.CreateInstance( eventConsumerType );
luaEventHandler.handler = eventHandler;
return luaEventHandler;
}
