125 lines
3.9 KiB
C#
125 lines
3.9 KiB
C#
namespace Modbus.Data
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{
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Diagnostics;
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using System.Linq;
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/// <summary>
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/// Collection of discrete values.
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/// </summary>
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public class DiscreteCollection : Collection<bool>, IModbusMessageDataCollection
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{
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/// <summary>
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/// Number of bits per byte.
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/// </summary>
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private const int BitsPerByte = 8;
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private readonly List<bool> _discretes;
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/// <summary>
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/// Initializes a new instance of the <see cref="DiscreteCollection" /> class.
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/// </summary>
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public DiscreteCollection()
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: this(new List<bool>())
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="DiscreteCollection" /> class.
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/// </summary>
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/// <param name="bits">Array for discrete collection.</param>
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public DiscreteCollection(params bool[] bits)
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: this((IList<bool>)bits)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="DiscreteCollection" /> class.
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/// </summary>
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/// <param name="bytes">Array for discrete collection.</param>
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public DiscreteCollection(params byte[] bytes)
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: this()
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{
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if (bytes == null)
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{
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throw new ArgumentNullException(nameof(bytes));
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}
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_discretes.Capacity = bytes.Length * BitsPerByte;
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foreach (byte b in bytes)
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{
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_discretes.Add((b & 1) == 1);
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_discretes.Add((b & 2) == 2);
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_discretes.Add((b & 4) == 4);
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_discretes.Add((b & 8) == 8);
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_discretes.Add((b & 16) == 16);
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_discretes.Add((b & 32) == 32);
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_discretes.Add((b & 64) == 64);
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_discretes.Add((b & 128) == 128);
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}
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="DiscreteCollection" /> class.
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/// </summary>
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/// <param name="bits">List for discrete collection.</param>
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public DiscreteCollection(IList<bool> bits)
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: this(new List<bool>(bits))
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="DiscreteCollection" /> class.
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/// </summary>
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/// <param name="bits">List for discrete collection.</param>
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internal DiscreteCollection(List<bool> bits)
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: base(bits)
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{
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Debug.Assert(bits != null, "Discrete bits is null.");
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_discretes = bits;
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}
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/// <summary>
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/// Gets the network bytes.
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/// </summary>
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public byte[] NetworkBytes
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{
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get
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{
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byte[] bytes = new byte[ByteCount];
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for (int index = 0; index < _discretes.Count; index++)
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{
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if (_discretes[index])
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{
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bytes[index / BitsPerByte] |= (byte)(1 << (index % BitsPerByte));
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}
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}
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return bytes;
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}
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}
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/// <summary>
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/// Gets the byte count.
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/// </summary>
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public byte ByteCount
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{
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get { return (byte)((Count + 7) / 8); }
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}
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/// <summary>
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/// Returns a <see cref="T:System.String" /> that represents the current <see cref="T:System.Object" />.
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/// </summary>
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/// <returns>
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/// A <see cref="T:System.String" /> that represents the current <see cref="T:System.Object" />.
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/// </returns>
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public override string ToString()
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{
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return string.Concat("{", string.Join(", ", this.Select(discrete => discrete ? "1" : "0").ToArray()), "}");
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}
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}
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}
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