annotate Implab/Components/ComponentContainer.cs @ 228:6fa235c5a760 v2

Rewritten JsonScanner, JsonParser, fixed naming style
author cin
date Tue, 12 Sep 2017 01:19:12 +0300
parents 1e082fb67a46
children
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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4
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5 namespace Implab.Components {
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6 /// <summary>
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7 /// Component container, used to store track components in multi-threaded environmment.
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8 /// </summary>
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9 /// <remarks>Instanses of this class are thread safe.</remarks>
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10 public class ComponentContainer<T> : Disposable, ICollection<T> {
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11 List<T> m_components = new List<T>();
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12 readonly object m_lock = new object();
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14 /// <summary>
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15 /// Removes currently stored compoenents from the container and disposes them if possible.
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16 /// </summary>
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17 /// <remarks>
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18 /// A new components may be added before this method completes.
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19 /// </remarks>
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20 public void Clear() {
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21 List<T> removed;
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22
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23 lock (m_lock) {
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24 removed = m_components;
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25 m_components = new List<T>();
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26 }
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27
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28 foreach (var item in removed.OfType<IDisposable>())
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29 item.Dispose();
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30 }
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31
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32 /// <summary>
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33 /// Checks whether the specified item in the collection.
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34 /// </summary>
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35 /// <param name="item">The item to check.</param>
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36 public bool Contains(T item) {
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37 lock (m_lock)
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38 return m_components.Contains(item);
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39 }
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41 /// <summary>
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42 /// Copies currently stored components to the specified array.
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43 /// </summary>
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44 /// <param name="array">A destination array for components.</param>
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45 /// <param name="arrayIndex">A starting index in the destination array.</param>
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46 public void CopyTo(T[] array, int arrayIndex) {
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47 lock (m_lock)
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48 m_components.CopyTo(array, arrayIndex);
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49 }
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50
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51 /// <summary>
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52 /// Remove the specified item from the collection.
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53 /// </summary>
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54 /// <param name="item">The item to remove.</param>
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55 public bool Remove(T item) {
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56 lock (m_lock)
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57 return m_components.Remove(item);
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58 }
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60 /// <summary>
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61 /// Gets the count of components in the collection.
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62 /// </summary>
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63 public int Count {
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64 get {
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65 lock (m_lock)
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66 return m_components.Count;
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67 }
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68 }
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70 /// <summary>
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71 /// Gets a value indicating whether this instance is read only.
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72 /// </summary>
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73 /// <remarks>
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74 /// Always false.
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75 /// </remarks>
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76 public bool IsReadOnly {
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77 get {
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78 return false;
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79 }
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80 }
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81
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82 /// <summary>
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83 /// Gets the enumerator for components in the collection.
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84 /// </summary>
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85 /// <returns>The enumerator.</returns>
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86 public IEnumerator<T> GetEnumerator() {
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87 T[] items = new T[m_components.Count];
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88 lock (m_lock) {
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89 m_components.CopyTo(items);
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90 }
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91 return (IEnumerator<T>)items.GetEnumerator();
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92 }
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93
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94 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() {
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95 return GetEnumerator();
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96 }
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97
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98 /// <summary>
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99 /// Add the specified item to the collection.
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100 /// </summary>
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101 /// <param name="item">The item to add.</param>
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102 /// <remarks>
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103 /// If the collection is alredy disposed, the item isn't added to the collection and disposed if possible.
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104 /// </remarks>
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105 public void Add(T item) {
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106 Safe.ArgumentNotNull(item, "item");
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107 bool dispose = false;
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108 lock (m_lock) {
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109 if (IsDisposed)
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110 dispose = true;
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111 else
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112 m_components.Add(item);
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113 }
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114 if (dispose)
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115 Safe.Dispose(item);
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116 }
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118 /// <summary>
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119 /// Disposes the components stored in the collection.
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120 /// </summary>
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121 /// <param name="disposing">If set to <c>true</c> the collection is disposing.</param>
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122 protected override void Dispose(bool disposing) {
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123 if (disposing)
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124 Clear();
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125
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126 base.Dispose(disposing);
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127 }
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128 }
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129 }
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