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

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Revision 106 - (hide annotations) (download)
Sun Mar 10 12:25:54 2013 UTC (7 years, 6 months ago) by william
File size: 11447 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 98
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 william 98
21     public bool IsReadOnly
22     {
23     get
24     {
25     ICollection<T> collection = (items as ICollection<T>);
26     if (collection == null)
27     {
28     throw new InvalidCastException(string.Format("Unable to cast: '{0}' to '{1}'", items.GetType().Name, typeof(ICollection<T>).Name));
29     }
30     return collection.IsReadOnly;
31     }
32     }
33    
34 william 90 public void AddProperty(T item) { items.Add(item); }
35     public void ClearProperties() { items.Clear(); }
36     public bool ContainsProperty(T item) { return items.Contains(item); }
37     public void CopyPropertiesTo(T[] array, int arrayIndex) { items.CopyTo(array, arrayIndex); }
38     public bool RemoveProperty(T item) { return items.Remove(item); }
39     public IEnumerator<T> GetEnumerator() { return items.GetEnumerator(); }
40     System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return items.GetEnumerator(); }
41 william 106
42     public override string ToString()
43     {
44     return string.Format("Property Count: {0}", PropertyCount);
45     }
46 william 90 }
47 william 95 public class PropertyDictionary : PropertyDictionary<string, object>, IPropertyDictionary
48 william 92 {
49 william 94 public PropertyDictionary() : base() { }
50 william 92 public PropertyDictionary(IPropertyDictionary dictionary) : base(dictionary) { }
51     public PropertyDictionary(IEqualityComparer<string> comparer) : base(comparer) { }
52     public PropertyDictionary(int capacity) :base(capacity) { }
53     public PropertyDictionary(IPropertyDictionary dictionary, IEqualityComparer<string> comparer) : base(dictionary, comparer) { }
54     public PropertyDictionary(int capacity, IEqualityComparer<string> comparer) : base(capacity, comparer) { }
55     protected PropertyDictionary(SerializationInfo info, StreamingContext context) : base(info, context) { }
56     }
57 william 90 public class PropertyDictionary<TKey, TValue> : IPropertyDictionary<TKey, TValue>
58     {
59 william 92 [StructLayout(LayoutKind.Sequential)]
60     private struct Entry
61     {
62     public int hashCode;
63     public int next;
64     public TKey name;
65     public TValue value;
66 william 106 public override string ToString()
67     {
68     return new PropertyValuePair<TKey, TValue>(name, value).ToString();
69     }
70 william 92 }
71     private Entry[] entries
72     {
73     get{
74     List<Entry> list = new List<Entry>();
75     int index = 0;
76     foreach (var t in properties)
77     {
78     Entry entry = new Entry();
79     entry.hashCode = this.properties.Comparer.GetHashCode(t.Key) & 0x7fffffff;
80     entry.next = index + 1;
81     entry.name = t.Key;
82     entry.value = t.Value;
83     list.Add(entry);
84     index++;
85     }
86     return list.ToArray();
87     }
88     }
89    
90     private int version
91     {
92     get
93     {
94     Type t = typeof(Dictionary<TKey, TValue>);
95     var field = t.GetField("version", BindingFlags.NonPublic | BindingFlags.Instance);
96     var v = Convert.ToInt32(field.GetValue(properties));
97     return v;
98     }
99     }
100 william 90 private Dictionary<TKey, TValue> properties;
101     public PropertyDictionary() { properties = new Dictionary<TKey, TValue>(); }
102 william 92 public PropertyDictionary(IPropertyDictionary<TKey, TValue> dictionary) :this() { foreach (var d in dictionary) { properties.Add(d.Name, d.Value); } }
103 william 90 public PropertyDictionary(IEqualityComparer<TKey> comparer) { properties = new Dictionary<TKey, TValue>(comparer); }
104     public PropertyDictionary(int capacity) { properties = new Dictionary<TKey, TValue>(capacity); }
105 william 92 public PropertyDictionary(IPropertyDictionary<TKey, TValue> dictionary, IEqualityComparer<TKey> comparer) : this(comparer) { foreach (var d in dictionary) { properties.Add(d.Name, d.Value); } }
106 william 90 public PropertyDictionary(int capacity, IEqualityComparer<TKey> comparer) { properties = new Dictionary<TKey, TValue>(capacity, comparer); }
107 william 92 protected PropertyDictionary(SerializationInfo info, StreamingContext context) { }
108 william 90 public IPropertyCollection<TKey> PropertyKeys { get { return new PropertyCollection<TKey>(properties.Keys); } }
109     public IPropertyCollection<TValue> PropertyValues { get { return new PropertyCollection<TValue>(properties.Values); } }
110     public TValue this[TKey key]
111     {
112     get
113     {
114     if (this.ContainsProperty(key))
115     {
116     return properties[key];
117     }
118     else
119     {
120     throw new KeyNotFoundException(string.Format("Property '{0}' does not exist.", key));
121     }
122     }
123     set
124     {
125     if (this.ContainsProperty(key))
126     {
127     properties[key] = value;
128     }
129     else
130     {
131     throw new KeyNotFoundException(string.Format("Property '{0}' does not exist.", key));
132     }
133     }
134     }
135    
136     public void AddProperty(TKey key, TValue value) { if (properties.ContainsKey(key)) { this[key] = value; } else { properties.Add(key, value); } }
137     public bool ContainsProperty(TKey key) { return properties.ContainsKey(key); }
138     public bool RemoveProperty(TKey key) { return properties.Remove(key); }
139     public bool TryGetPropertyValue(TKey key, out TValue value) { return properties.TryGetValue(key, out value); }
140     public int PropertyCount { get { return properties.Count; } }
141 william 98 public bool IsReadOnly
142     {
143     get
144     {
145     IDictionary<TKey, TValue> collection = (properties as IDictionary<TKey, TValue>);
146     if (collection == null)
147     {
148     throw new InvalidCastException(string.Format("Unable to cast: '{0}' to '{1}'", properties.GetType().Name, typeof(IDictionary<TKey, TValue>).Name));
149     }
150     return collection.IsReadOnly;
151     }
152     }
153 william 105 public void AddProperty(IPropertyValuePair<TKey, TValue> item) { AddProperty(item.Name, item.Value); }
154 william 90 public void ClearProperties() { properties.Clear(); }
155 william 105 public bool ContainsProperty(IPropertyValuePair<TKey, TValue> item) { return ContainsProperty(item.Name); }
156     public void CopyPropertiesTo(IPropertyValuePair<TKey, TValue>[] array, int arrayIndex)
157 william 92 {
158 william 105 var list = properties.ToList().Cast<IPropertyValuePair<TKey, TValue>>().ToList();
159 william 92 list.CopyTo(array, arrayIndex);
160     }
161 william 105 public bool RemoveProperty(IPropertyValuePair<TKey, TValue> item) { return RemoveProperty(item.Name); }
162     IEnumerator<IPropertyValuePair<TKey, TValue>> IEnumerable<IPropertyValuePair<TKey, TValue>>.GetEnumerator() { return new PropertyDictionaryEnumerator(this, 2); }
163 william 90 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return properties.GetEnumerator(); }
164 william 92
165 william 106 public override string ToString()
166     {
167     return string.Format("Property Count: {0}", PropertyCount);
168     }
169 william 92 #region enumerator support
170 william 105 public class PropertyDictionaryEnumerator : IEnumerator<IPropertyValuePair<TKey, TValue>>, IDisposable
171 william 92 {
172     private PropertyDictionary<TKey, TValue> dictionary;
173     private int index;
174 william 105 private IPropertyValuePair<TKey, TValue> current;
175 william 92 private int getEnumeratorRetType;
176     internal const int DictEntry = 1;
177     internal const int KeyValuePair = 2;
178     private int version;
179     public PropertyDictionaryEnumerator(PropertyDictionary<TKey, TValue> dictionary, int getEnumeratorRetType)
180     {
181     this.dictionary = dictionary;
182 william 93 this.version = dictionary.version;
183     this.index = 0;
184 william 92 this.getEnumeratorRetType = getEnumeratorRetType;
185 william 93 this.current = new PropertyValuePair<TKey, TValue>();
186 william 92 }
187    
188 william 105 public IPropertyValuePair<TKey, TValue> Current
189 william 92 {
190 william 93 get { return this.current; }
191 william 92 }
192    
193     public void Dispose()
194     {
195     }
196    
197     object IEnumerator.Current
198     {
199     get
200     {
201     if ((this.index == 0) || (this.index == (this.dictionary.Count() + 1)))
202     {
203     throw new InvalidOperationException("Operation can't happen");
204     }
205     if (this.getEnumeratorRetType == 1)
206     {
207     return new DictionaryEntry(this.current.Name, this.current.Value);
208     }
209     return new PropertyValuePair<TKey, TValue>(this.current.Name, this.current.Value);
210     }
211     }
212    
213     public bool MoveNext()
214     {
215     if (this.version != this.dictionary.version)
216     {
217     ThrowHelper.ThrowInvalidOperationException(ExceptionResource.InvalidOperation_EnumFailedVersion);
218     }
219     while (this.index < this.dictionary.Count())
220     {
221     if (this.dictionary.entries[this.index].hashCode >= 0)
222     {
223 william 105 this.current =(IPropertyValuePair<TKey,TValue>)(PropertyValuePair<TKey,TValue>)new KeyValuePair<TKey, TValue>(this.dictionary.entries[this.index].name, this.dictionary.entries[this.index].value);
224 william 92 this.index++;
225     return true;
226     }
227     this.index++;
228     }
229     this.index = this.dictionary.Count() + 1;
230     this.current = new PropertyValuePair<TKey, TValue>();
231     return false;
232     }
233     public void Reset()
234     {
235     if (this.version != this.dictionary.version)
236     {
237     ThrowHelper.ThrowInvalidOperationException(ExceptionResource.InvalidOperation_EnumFailedVersion);
238     }
239     this.index = 0;
240 william 105 this.current = (IPropertyValuePair<TKey, TValue>)(PropertyValuePair<TKey, TValue>)new KeyValuePair<TKey, TValue>();
241 william 92 }
242     }
243     #endregion
244 william 90 }
245    
246 william 92
247 william 90 }

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