91 lines
2.3 KiB
C#
91 lines
2.3 KiB
C#
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//
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// BlobHeap.cs
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//
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// Author:
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// Jb Evain (jbevain@gmail.com)
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//
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// (C) 2005 Jb Evain
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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namespace Mono.Cecil.Metadata {
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using System;
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using System.Collections;
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using System.IO;
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internal class BlobHeap : MetadataHeap {
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internal BlobHeap (MetadataStream stream) : base (stream, MetadataStream.Blob)
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{
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}
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public byte [] Read (uint index)
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{
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return ReadBytesFromStream (index);
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}
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public BinaryReader GetReader (uint index)
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{
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return new BinaryReader (new MemoryStream (Read (index)));
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}
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public override void Accept (IMetadataVisitor visitor)
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{
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visitor.VisitBlobHeap (this);
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}
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}
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class ByteArrayEqualityComparer : IHashCodeProvider, IComparer {
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public static readonly ByteArrayEqualityComparer Instance = new ByteArrayEqualityComparer ();
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public int GetHashCode (object obj)
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{
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byte [] array = (byte []) obj;
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int hash = 0;
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for (int i = 0; i < array.Length; i++)
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hash = (hash * 37) ^ array [i];
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return hash;
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}
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public int Compare (object a, object b)
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{
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byte [] x = (byte []) a;
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byte [] y = (byte []) b;
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if (x == null || y == null)
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return x == y ? 0 : 1;
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if (x.Length != y.Length)
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return 1;
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for (int i = 0; i < x.Length; i++)
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if (x [i] != y [i])
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return 1;
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return 0;
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}
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}
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}
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