public NativeFunction(NativeFunctionDelegate fun, int argc) : base(argc)
{
if (fun == null)
{
throw new ArgumentNullException(nameof(fun));
}
this.fun = fun;
}
public NativeFunctionInstance(string name, MelonObject self, MelonEngine engine, NativeFunctionDelegate del) : base(name, engine)
{
Self = self;
ReturnTypeAttribute returnTypeAttribute = del.Method.GetCustomAttribute <ReturnTypeAttribute>();
if (returnTypeAttribute != null)
{
ReturnType = new TypeReference(engine, engine.GetType(returnTypeAttribute.Type));
}
ParameterAttribute[] parameterAttributes = del.Method.GetCustomAttributes <ParameterAttribute>().ToArray();
if (parameterAttributes?.Length > 0)
{
ParameterTypes = new FunctionParameter[parameterAttributes.Length];
bool hasVarargs = false;
for (int i = 0; i < parameterAttributes.Length; i++)
{
if (parameterAttributes[i].IsGeneric)
{
ParameterTypes[i] = new FunctionParameter(parameterAttributes[i].Name, parameterAttributes[i].GenericIndex);
}
else
{
ParameterTypes[i] = new FunctionParameter(parameterAttributes[i].Name, new TypeReference(engine, engine.GetType(parameterAttributes[i].Type)));
}
if (parameterAttributes[i].IsVarargs)
{
if (hasVarargs || i < parameterAttributes.Length - 1)
{
throw new MelonException("Varargs parameter can only appear once and has to be the last parameter");
}
ParameterTypes[i].IsVarargs = true;
hasVarargs = true;
}
}
}
else
{
ParameterTypes = new[] { new FunctionParameter("", new TypeReference(engine, engine.anyType))
{
IsVarargs = true
} };
}
Delegate = del;
}
private NativeFunctionDelegate FindNativeFunction(string name)
{
NativeFunctionDelegate nativeFunction = null;
if (NativeFunctions.TryGetValue(name, out nativeFunction))
{
return(nativeFunction);
}
if (NativeFunctions.TryGetValue(StringUtility.PascalCase(name), out nativeFunction))
{
return(nativeFunction);
}
if (NativeFunctions.TryGetValue(StringUtility.CamelCase(name), out nativeFunction))
{
return(nativeFunction);
}
return(null);
}
public void RegisterFunction(string name, int argc, NativeFunctionDelegate fun) => RegisterFunction(name, new NativeFunction(fun, argc));
public NativeFunction(NativeFunctionDelegate fun) : this(fun, 0)
{
}
