/// <summary>
/// Common initialization method. Creates an instantiator delegate when the given type if not public.
/// </summary>
private void CommonConstruct()
{
if (!typeof(T).IsPublic)
{
mNewMtd = SurrogateHelper.CreateDefaultConstructorDelegate(typeof(T));
}
}
public ConstructorData <DefaultConstructorDelegate> GetDefaultConstructor([NotNull] Type type)
{
Debug.Assert(type != null);
return(_cachedDefaultConstructors.GetOrCreate(type, () =>
{
DefaultConstructorDelegate ctor = DelegatesFactory.CreateDefaultConstructor(type, out bool hasConstructor);
return new ConstructorData <DefaultConstructorDelegate>(ctor, hasConstructor);
}));
}
public static DefaultConstructorDelegate CreateDefaultConstructorDelegate(Type type)
{
if (type == null)
{
throw new ArgumentNullException("genericType");
}
ConstructorInfo defaultConstructor = type.GetConstructor(Type.EmptyTypes);
if (defaultConstructor == null)
{
return(null);
}
// Specify the types of the parameters of the dynamic method. This
// dynamic method has no parameters.
Type[] methodArgs = Type.EmptyTypes;
// Create a dynamic method with the name "", a return type
// of void, and two parameters whose types are specified by
// the array methodArgs. Create the method in the module that
// defines the type.
DynamicMethod method = new DynamicMethod(String.Empty,
MethodAttributes.Public | MethodAttributes.Static,
CallingConventions.Standard,
typeof(object),
methodArgs,
type,
true);
// Get an ILGenerator and emit a body for the dynamic method,
ILGenerator il = method.GetILGenerator();
EmitDefaultCreatorMethod(type, il);
DefaultConstructorDelegate deleg =
(DefaultConstructorDelegate)method.CreateDelegate(typeof(DefaultConstructorDelegate));
return(deleg);
}
