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//
// 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.
//
/*
* Copyright (c) 2002 Sergey Chaban <serge@wildwestsoftware.com>
*/

using System;
using System.IO;
using System.Runtime.InteropServices;

namespace Mono.PEToolkit {

/// <summary>
/// IMAGE_DATA_DIRECTORY.
/// </summary>
public class DataDir {

public static readonly DataDir Null;

public RVA virtAddr;
public uint size;

static DataDir ()
{
Null = new DataDir ();
Null.virtAddr = 0;
Null.size = 0;
}

public DataDir () {

}

public DataDir (BinaryReader reader)
{
Read (reader);
}

public void Read (BinaryReader reader)
{
virtAddr = new RVA (reader.ReadUInt32 ());
size = reader.ReadUInt32 ();
}

public void Write (BinaryWriter writer)
{
virtAddr.Write (writer);
writer.Write (size);
}

public RVA VirtualAddress {
get {
return virtAddr;
}
set {
virtAddr = value;
}
}

public uint Size {
get {
return size;
}
set {
size = value;
}
}

public bool IsNull {
get {
return (this == Null);
}
}

public override int GetHashCode()
{
return (virtAddr.GetHashCode() ^ (int)(size << 1));
}

public override bool Equals(object obj)
{
bool res = (obj is DataDir);
if (res) {
DataDir that = (DataDir) obj;
res = (this.virtAddr == that.virtAddr) &&
(this.size == that.size);
}
return res;
}

public static bool operator == (DataDir d1, DataDir d2)
{
return d1.Equals(d2);
}

public static bool operator != (DataDir d1, DataDir d2)
{
return !d1.Equals(d2);
}

/// <summary>
/// </summary>
/// <returns></returns>
public override string ToString()
{
if (this.IsNull) return "NULL";
return String.Format("RVA = {0}, size = 0x{1}", virtAddr, size.ToString("X"));
}

}

}

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