//
// AssemblyRef.cs
//
// Authors:
//	Chris Bacon (chrisbacon76@gmail.com)
//
// Copyright (C) 2010 Chris Bacon
//
// 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.Linq;
using System.Text;
using System.IO;

namespace Mono.CodeContracts.Rewrite {
	public struct AssemblyRef {

		public struct TwoStreams {

			public TwoStreams (Stream assembly, Stream symbols)
				: this ()
			{
				this.Assembly = assembly;
				this.Symbols = symbols;
			}

			public Stream Assembly { get; private set; }
			public Stream Symbols { get; private set; }

		}

		public AssemblyRef (string filename)
			: this ()
		{
			this.Filename = filename;
		}

		public AssemblyRef (TwoStreams streams)
			: this ()
		{
			this.Streams = streams;
		}

		public string Filename { get; private set; }
		public TwoStreams Streams { get; private set; }

		public bool IsFilename {
			get {
				return this.Filename != null;
			}
		}

		public bool IsStream {
			get {
				return this.Streams.Assembly != null;
			}
		}

		public bool IsSet {
			get {
				return this.Filename != null || this.Streams.Assembly != null;
			}
		}

		public static implicit operator AssemblyRef (string filename)
		{
			return new AssemblyRef (filename);
		}

		public static implicit operator AssemblyRef (Stream stream)
		{
			return new AssemblyRef (new TwoStreams (stream, null));
		}

	}
}