Ejemplo n.º 1
0
		private void CreateDefaultInstance(
			FieldBuilder field, TypeHelper fieldType, TypeHelper objectType, EmitHelper emit)
		{
			if (!CheckObjectHolderCtor(fieldType, objectType))
				return;

			if (objectType.Type == typeof(string))
			{
				emit
					.ldarg_0
					.LoadInitValue (objectType)
					;
			}
			else if (objectType.IsArray)
			{
				FieldBuilder initializer = GetArrayInitializer(objectType);

				emit
					.ldarg_0
					.ldsfld  (initializer)
					;
			}
			else
			{
				ConstructorInfo ci = objectType.GetPublicDefaultConstructor();

				if (ci == null)
				{
					if (objectType.Type.IsValueType)
						return;

					string message = string.Format(
						Resources.TypeBuilder_PropertyTypeHasNoPublicDefaultCtor,
						Context.CurrentProperty.Name,
						Context.Type.FullName,
						objectType.FullName);

					emit
						.ldstr  (message)
						.newobj (typeof(TypeBuilderException), typeof(string))
						.@throw
						.end()
						;

					return;
				}
				else
				{
					emit
						.ldarg_0
						.newobj  (ci)
						;
				}
			}

			if (IsObjectHolder)
			{
				emit
					.newobj (fieldType, objectType)
					;
			}

			emit
				.stfld (field)
				;
		}