// 
// AbstractTypeParameterMember.cs
//  
// Author:
//       Mike Krüger <mkrueger@novell.com>
// 
// Copyright (c) 2010 Novell, Inc (http://www.novell.com)
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace MonoDevelop.Projects.Dom
{
	public abstract class AbstractTypeParameterMember : AbstractMember, ITypeParameterMember
	{
		static readonly ReadOnlyCollection<ITypeParameter> emptyParamList = new List<ITypeParameter> ().AsReadOnly ();
		
		protected List<ITypeParameter> typeParameters = null;
		public virtual ReadOnlyCollection<ITypeParameter> TypeParameters {
			get {
				return typeParameters != null ? typeParameters.AsReadOnly () : emptyParamList;
			}
		}
		
		public void AddTypeParameter (ITypeParameter parameter)
		{
			if (typeParameters == null)
				typeParameters = new List<ITypeParameter> ();
			typeParameters.Add (parameter);
		}
		
		public void AddTypeParameter (IEnumerable<ITypeParameter> parameters)
		{
			if (parameters == null)
				return;
			foreach (ITypeParameter parameter in parameters) {
				AddTypeParameter (parameter);
			}
		}
		
		public int GetTypeParameterIndex (string parameterName)
		{
			if (typeParameters == null)
				return -1;
			for (int i = 0; i < typeParameters.Count; i++) {
				if (typeParameters[i].Name == parameterName)
					return i;
			}
			
			return -1;
		}
		
	}
}

