Relationship Oriented Programming - The IDE plus More on Agile Project Management

/*
Copyright (c) 2005, Marc Clifton
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this list
  of conditions and the following disclaimer. 

* Redistributions in binary form must reproduce the above copyright notice, this 
  list of conditions and the following disclaimer in the documentation and/or other
  materials provided with the distribution. 
 
* Neither the name of Marc Clifton nor the names of its contributors may be
  used to endorse or promote products derived from this software without specific
  prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

using System;
using System.Collections.Generic;
using System.IO;

namespace Clifton.Tools.Data
{
	public class TypeIO
	{
		private delegate void WriterDlgt(BinaryWriter bw, object val);
		private delegate object ReaderDlgt(BinaryReader br);

		private class IODelegate
		{
			protected WriterDlgt writer;
			protected ReaderDlgt reader;

			public WriterDlgt Writer
			{
				get { return writer; }
			}

			public ReaderDlgt Reader
			{
				get { return reader; }
			}

			public IODelegate(WriterDlgt writer, ReaderDlgt reader)
			{
				this.writer = writer;
				this.reader = reader;
			}
		}

		private Dictionary<Type, IODelegate> typeToDelegateMap;

		public TypeIO()
		{
			typeToDelegateMap = new Dictionary<Type, IODelegate>();
			typeToDelegateMap[typeof(bool)] = new IODelegate(new WriterDlgt(BoolWriter), new ReaderDlgt(BoolReader));
			typeToDelegateMap[typeof(byte)]=new IODelegate(new WriterDlgt(ByteWriter), new ReaderDlgt(ByteReader));
			typeToDelegateMap[typeof(byte[])]=new IODelegate(new WriterDlgt(ByteArrayWriter), new ReaderDlgt(ByteArrayReader));
			typeToDelegateMap[typeof(char)]=new IODelegate(new WriterDlgt(CharWriter), new ReaderDlgt(CharReader));
			typeToDelegateMap[typeof(char[])]=new IODelegate(new WriterDlgt(CharArrayWriter), new ReaderDlgt(CharArrayReader));
			typeToDelegateMap[typeof(decimal)]=new IODelegate(new WriterDlgt(DecimalWriter), new ReaderDlgt(DecimalReader));
			typeToDelegateMap[typeof(double)]=new IODelegate(new WriterDlgt(DoubleWriter), new ReaderDlgt(DoubleReader));
			typeToDelegateMap[typeof(short)]=new IODelegate(new WriterDlgt(ShortWriter), new ReaderDlgt(ShortReader));
			typeToDelegateMap[typeof(int)]=new IODelegate(new WriterDlgt(IntWriter), new ReaderDlgt(IntReader));
			typeToDelegateMap[typeof(long)]=new IODelegate(new WriterDlgt(LongWriter), new ReaderDlgt(LongReader));
			typeToDelegateMap[typeof(sbyte)]=new IODelegate(new WriterDlgt(SByteWriter), new ReaderDlgt(SByteReader));
			typeToDelegateMap[typeof(float)]=new IODelegate(new WriterDlgt(FloatWriter), new ReaderDlgt(FloatReader));
			typeToDelegateMap[typeof(string)]=new IODelegate(new WriterDlgt(StringWriter), new ReaderDlgt(StringReader));
			typeToDelegateMap[typeof(ushort)]=new IODelegate(new WriterDlgt(UShortWriter), new ReaderDlgt(UShortReader));
			typeToDelegateMap[typeof(uint)]=new IODelegate(new WriterDlgt(UIntWriter), new ReaderDlgt(UIntReader));
			typeToDelegateMap[typeof(ulong)]=new IODelegate(new WriterDlgt(ULongWriter), new ReaderDlgt(ULongReader));
			typeToDelegateMap[typeof(DateTime)] = new IODelegate(new WriterDlgt(DateTimeWriter), new ReaderDlgt(DateTimeReader));
		}

		public bool Write(BinaryWriter bw, object val)
		{
			bool success=false;
			Type t=val.GetType();

			if (typeToDelegateMap.ContainsKey(t))
			{
				typeToDelegateMap[t].Writer(bw, val);
				success = true;
			}

			return success;
		}

		public object Read(BinaryReader br, Type t, out bool success)
		{
			object ret = null;
			success = false;

			if (typeToDelegateMap.ContainsKey(t))
			{
				ret=typeToDelegateMap[t].Reader(br);
				success = true;
			}

			return ret;
		}

		protected void BoolWriter(BinaryWriter bw, object val)
		{
			bw.Write((bool)val);
		}

		protected object BoolReader(BinaryReader br)
		{
			return br.ReadBoolean();
		}

		protected void ByteWriter(BinaryWriter bw, object val)
		{
			bw.Write((byte)val);
		}

		protected object ByteReader(BinaryReader br)
		{
			return br.ReadByte();
		}

		protected void ByteArrayWriter(BinaryWriter bw, object val)
		{
			bw.Write(((byte[])val).Length);
			bw.Write((byte[])val);
		}

		protected object ByteArrayReader(BinaryReader br)
		{
			int count = br.ReadInt32();
			return br.ReadBytes(count);
		}

		protected void CharWriter(BinaryWriter bw, object val)
		{
			bw.Write((char)val);
		}

		protected object CharReader(BinaryReader br)
		{
			return br.ReadChar();
		}

		protected void CharArrayWriter(BinaryWriter bw, object val)
		{
			bw.Write(((char[])val).Length);
			bw.Write((char[])val);
		}

		protected object CharArrayReader(BinaryReader br)
		{
			int count = br.ReadInt32();
			return br.ReadChars(count);
		}

		protected void DecimalWriter(BinaryWriter bw, object val)
		{
			bw.Write((decimal)val);
		}

		protected object DecimalReader(BinaryReader br)
		{
			return br.ReadDecimal();
		}

		protected void DoubleWriter(BinaryWriter bw, object val)
		{
			bw.Write((double)val);
		}

		protected object DoubleReader(BinaryReader br)
		{
			return br.ReadDouble();
		}

		protected void ShortWriter(BinaryWriter bw, object val)
		{
			bw.Write((short)val);
		}

		protected object ShortReader(BinaryReader br)
		{
			return br.ReadInt16();
		}

		protected void IntWriter(BinaryWriter bw, object val)
		{
			bw.Write((int)val);
		}

		protected object IntReader(BinaryReader br)
		{
			return br.ReadInt32();
		}

		protected void LongWriter(BinaryWriter bw, object val)
		{
			bw.Write((long)val);
		}

		protected object LongReader(BinaryReader br)
		{
			return br.ReadInt64();
		}

		protected void SByteWriter(BinaryWriter bw, object val)
		{
			bw.Write((sbyte)val);
		}

		protected object SByteReader(BinaryReader br)
		{
			return br.ReadSByte();
		}

		protected void FloatWriter(BinaryWriter bw, object val)
		{
			bw.Write((float)val);
		}

		protected object FloatReader(BinaryReader br)
		{
			return br.ReadSingle();
		}

		protected void StringWriter(BinaryWriter bw, object val)
		{
			bw.Write((string)val);
		}

		protected object StringReader(BinaryReader br)
		{
			return br.ReadString();
		}

		protected void UShortWriter(BinaryWriter bw, object val)
		{
			bw.Write((ushort)val);
		}

		protected object UShortReader(BinaryReader br)
		{
			return br.ReadUInt16();
		}

		protected void UIntWriter(BinaryWriter bw, object val)
		{
			bw.Write((uint)val);
		}

		protected object UIntReader(BinaryReader br)
		{
			return br.ReadUInt32();
		}

		protected void ULongWriter(BinaryWriter bw, object val)
		{
			bw.Write((ulong)val);
		}

		protected object ULongReader(BinaryReader br)
		{
			return br.ReadUInt64();
		}

		protected void DateTimeWriter(BinaryWriter bw, object val)
		{
			bw.Write(((DateTime)val).Ticks);
		}

		protected object DateTimeReader(BinaryReader br)
		{
			long ticks = br.ReadInt64();
			return new DateTime(ticks);
		}
	}
}