/[xmltv_parser]/trunk/libxmltv/Core/PropertyDictionary.cs
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Annotation of /trunk/libxmltv/Core/PropertyDictionary.cs

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Revision 95 - (hide annotations) (download)
Sun Mar 10 09:01:33 2013 UTC (7 years, 7 months ago) by william
File size: 10111 byte(s)

1 william 90 using System;
2     using System.Collections.Generic;
3     using System.Linq;
4     using System.Text;
5     using libxmltv.Interfaces;
6     using System.Runtime.Serialization;
7 william 92 using System.Collections;
8     using System.Runtime.InteropServices;
9     using System.Reflection;
10 william 90
11     namespace libxmltv.Core
12     {
13 william 95
14 william 90 public class PropertyCollection<T> : IPropertyCollection<T>
15     {
16     private List<T> items = new List<T>();
17     public PropertyCollection() : this(new List<T>()) { }
18     public PropertyCollection(ICollection<T> collection) { foreach (var t in collection) { items.Add(t); } }
19     public int PropertyCount { get { return items.Count; } }
20     public bool IsReadOnly { get { return (items as ICollection<T>).IsReadOnly; } }
21     public void AddProperty(T item) { items.Add(item); }
22     public void ClearProperties() { items.Clear(); }
23     public bool ContainsProperty(T item) { return items.Contains(item); }
24     public void CopyPropertiesTo(T[] array, int arrayIndex) { items.CopyTo(array, arrayIndex); }
25     public bool RemoveProperty(T item) { return items.Remove(item); }
26     public IEnumerator<T> GetEnumerator() { return items.GetEnumerator(); }
27     System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return items.GetEnumerator(); }
28     }
29 william 95 public class PropertyDictionary : PropertyDictionary<string, object>, IPropertyDictionary
30 william 92 {
31 william 94 public PropertyDictionary() : base() { }
32 william 92 public PropertyDictionary(IPropertyDictionary dictionary) : base(dictionary) { }
33     public PropertyDictionary(IEqualityComparer<string> comparer) : base(comparer) { }
34     public PropertyDictionary(int capacity) :base(capacity) { }
35     public PropertyDictionary(IPropertyDictionary dictionary, IEqualityComparer<string> comparer) : base(dictionary, comparer) { }
36     public PropertyDictionary(int capacity, IEqualityComparer<string> comparer) : base(capacity, comparer) { }
37     protected PropertyDictionary(SerializationInfo info, StreamingContext context) : base(info, context) { }
38     }
39 william 90 public class PropertyDictionary<TKey, TValue> : IPropertyDictionary<TKey, TValue>
40     {
41 william 92 [StructLayout(LayoutKind.Sequential)]
42     private struct Entry
43     {
44     public int hashCode;
45     public int next;
46     public TKey name;
47     public TValue value;
48     }
49     private Entry[] entries
50     {
51     get{
52     List<Entry> list = new List<Entry>();
53     int index = 0;
54     foreach (var t in properties)
55     {
56     Entry entry = new Entry();
57     entry.hashCode = this.properties.Comparer.GetHashCode(t.Key) & 0x7fffffff;
58     entry.next = index + 1;
59     entry.name = t.Key;
60     entry.value = t.Value;
61     list.Add(entry);
62     index++;
63     }
64     return list.ToArray();
65     }
66     }
67    
68     private int version
69     {
70     get
71     {
72     Type t = typeof(Dictionary<TKey, TValue>);
73     var field = t.GetField("version", BindingFlags.NonPublic | BindingFlags.Instance);
74     var v = Convert.ToInt32(field.GetValue(properties));
75     return v;
76     }
77     }
78 william 90 private Dictionary<TKey, TValue> properties;
79     public PropertyDictionary() { properties = new Dictionary<TKey, TValue>(); }
80 william 92 public PropertyDictionary(IPropertyDictionary<TKey, TValue> dictionary) :this() { foreach (var d in dictionary) { properties.Add(d.Name, d.Value); } }
81 william 90 public PropertyDictionary(IEqualityComparer<TKey> comparer) { properties = new Dictionary<TKey, TValue>(comparer); }
82     public PropertyDictionary(int capacity) { properties = new Dictionary<TKey, TValue>(capacity); }
83 william 92 public PropertyDictionary(IPropertyDictionary<TKey, TValue> dictionary, IEqualityComparer<TKey> comparer) : this(comparer) { foreach (var d in dictionary) { properties.Add(d.Name, d.Value); } }
84 william 90 public PropertyDictionary(int capacity, IEqualityComparer<TKey> comparer) { properties = new Dictionary<TKey, TValue>(capacity, comparer); }
85 william 92 protected PropertyDictionary(SerializationInfo info, StreamingContext context) { }
86 william 90 public IPropertyCollection<TKey> PropertyKeys { get { return new PropertyCollection<TKey>(properties.Keys); } }
87     public IPropertyCollection<TValue> PropertyValues { get { return new PropertyCollection<TValue>(properties.Values); } }
88     public TValue this[TKey key]
89     {
90     get
91     {
92     if (this.ContainsProperty(key))
93     {
94     return properties[key];
95     }
96     else
97     {
98     throw new KeyNotFoundException(string.Format("Property '{0}' does not exist.", key));
99     }
100     }
101     set
102     {
103     if (this.ContainsProperty(key))
104     {
105     properties[key] = value;
106     }
107     else
108     {
109     throw new KeyNotFoundException(string.Format("Property '{0}' does not exist.", key));
110     }
111     }
112     }
113    
114     public void AddProperty(TKey key, TValue value) { if (properties.ContainsKey(key)) { this[key] = value; } else { properties.Add(key, value); } }
115     public bool ContainsProperty(TKey key) { return properties.ContainsKey(key); }
116     public bool RemoveProperty(TKey key) { return properties.Remove(key); }
117     public bool TryGetPropertyValue(TKey key, out TValue value) { return properties.TryGetValue(key, out value); }
118     public int PropertyCount { get { return properties.Count; } }
119 william 95 public bool IsReadOnly { get { return (properties as IPropertyCollection<TKey>).IsReadOnly; } }
120 william 92 public void AddProperty(PropertyValuePair<TKey, TValue> item) { AddProperty(item.Name, item.Value); }
121 william 90 public void ClearProperties() { properties.Clear(); }
122 william 92 public bool ContainsProperty(PropertyValuePair<TKey, TValue> item) { return ContainsProperty(item.Name); }
123     public void CopyPropertiesTo(PropertyValuePair<TKey, TValue>[] array, int arrayIndex)
124     {
125     var list = properties.ToList().Cast<PropertyValuePair<TKey, TValue>>().ToList();
126     list.CopyTo(array, arrayIndex);
127     }
128     public bool RemoveProperty(PropertyValuePair<TKey, TValue> item) { return RemoveProperty(item.Name); }
129     IEnumerator<PropertyValuePair<TKey, TValue>> IEnumerable<PropertyValuePair<TKey, TValue>>.GetEnumerator() { return new PropertyDictionaryEnumerator(this, 2); }
130 william 90 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return properties.GetEnumerator(); }
131 william 92
132     #region enumerator support
133     public class PropertyDictionaryEnumerator: IEnumerator<PropertyValuePair<TKey,TValue>>, IDisposable
134     {
135     private PropertyDictionary<TKey, TValue> dictionary;
136     private int index;
137     private PropertyValuePair<TKey, TValue> current;
138     private int getEnumeratorRetType;
139     internal const int DictEntry = 1;
140     internal const int KeyValuePair = 2;
141     private int version;
142     public PropertyDictionaryEnumerator(PropertyDictionary<TKey, TValue> dictionary, int getEnumeratorRetType)
143     {
144     this.dictionary = dictionary;
145 william 93 this.version = dictionary.version;
146     this.index = 0;
147 william 92 this.getEnumeratorRetType = getEnumeratorRetType;
148 william 93 this.current = new PropertyValuePair<TKey, TValue>();
149 william 92 }
150    
151     public PropertyValuePair<TKey, TValue> Current
152     {
153 william 93 get { return this.current; }
154 william 92 }
155    
156     public void Dispose()
157     {
158     }
159    
160     object IEnumerator.Current
161     {
162     get
163     {
164     if ((this.index == 0) || (this.index == (this.dictionary.Count() + 1)))
165     {
166     throw new InvalidOperationException("Operation can't happen");
167     }
168     if (this.getEnumeratorRetType == 1)
169     {
170     return new DictionaryEntry(this.current.Name, this.current.Value);
171     }
172     return new PropertyValuePair<TKey, TValue>(this.current.Name, this.current.Value);
173     }
174     }
175    
176     public bool MoveNext()
177     {
178     if (this.version != this.dictionary.version)
179     {
180     ThrowHelper.ThrowInvalidOperationException(ExceptionResource.InvalidOperation_EnumFailedVersion);
181     }
182     while (this.index < this.dictionary.Count())
183     {
184     if (this.dictionary.entries[this.index].hashCode >= 0)
185     {
186     this.current = new KeyValuePair<TKey, TValue>(this.dictionary.entries[this.index].name, this.dictionary.entries[this.index].value);
187     this.index++;
188     return true;
189     }
190     this.index++;
191     }
192     this.index = this.dictionary.Count() + 1;
193     this.current = new PropertyValuePair<TKey, TValue>();
194     return false;
195     }
196     public void Reset()
197     {
198     if (this.version != this.dictionary.version)
199     {
200     ThrowHelper.ThrowInvalidOperationException(ExceptionResource.InvalidOperation_EnumFailedVersion);
201     }
202     this.index = 0;
203     this.current = new KeyValuePair<TKey, TValue>();
204     }
205     }
206     #endregion
207 william 90 }
208    
209 william 92
210 william 90 }

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