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ComponentServicesUtil.cs
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ComponentServicesUtil.cs
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// Copyright 2004-2011 Castle Project - http://www.castleproject.org/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
namespace Castle.Core.Internal
{
using System;
using System.Collections.Generic;
public class ComponentServicesUtil
{
private static readonly TypeByInheritanceDepthMostSpecificFirstComparer comparer = new TypeByInheritanceDepthMostSpecificFirstComparer();
public static void AddService(IList<Type> existingServices, Type newService)
{
if (existingServices.Contains(newService))
{
return;
}
if (newService.IsInterface)
{
existingServices.Add(newService);
return;
}
if (newService.IsClass == false)
{
throw new ArgumentException(
string.Format("Type {0} is not a class nor an interface, and those are the only values allowed.", newService));
}
var count = existingServices.Count;
for (var i = 0; i < count; i++)
{
if (existingServices[i].IsInterface)
{
existingServices.Insert(i, newService);
}
var result = comparer.Compare(newService, existingServices[i]);
if (result < 0)
{
existingServices.Insert(i, newService);
return;
}
if (result == 0)
{
return;
}
}
existingServices.Add(newService);
}
}
}