mcs/class/System.ComponentModel.Composition/src/ComponentModel/Microsoft/Internal/AttributeServices.cs


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// -----------------------------------------------------------------------
// Copyright (c) Microsoft Corporation.  All rights reserved.
// -----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

namespace Microsoft.Internal
{
    internal static class AttributeServices
    {
        public static T[] GetAttributes<T>(this ICustomAttributeProvider attributeProvider) where T : class
        {
            return (T[])attributeProvider.GetCustomAttributes(typeof(T), false);
        }

        public static T[] GetAttributes<T>(this ICustomAttributeProvider attributeProvider, bool inherit) where T : class
        {
            return (T[])attributeProvider.GetCustomAttributes(typeof(T), inherit);
        }

        public static T GetFirstAttribute<T>(this ICustomAttributeProvider attributeProvider) where T : class
        {
            return GetAttributes<T>(attributeProvider).FirstOrDefault();
        }

        public static T GetFirstAttribute<T>(this ICustomAttributeProvider attributeProvider, bool inherit) where T : class
        {
            return GetAttributes<T>(attributeProvider, inherit).FirstOrDefault();
        }

        public static bool IsAttributeDefined<T>(this ICustomAttributeProvider attributeProvider) where T : class
        {
            return attributeProvider.IsDefined(typeof(T), false);
        }

        public static bool IsAttributeDefined<T>(this ICustomAttributeProvider attributeProvider, bool inherit) where T : class
        {
            return attributeProvider.IsDefined(typeof(T), inherit);
        }
    }
}