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

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Revision 106 - (show annotations) (download)
Sun Mar 10 12:25:54 2013 UTC (6 years, 9 months ago) by william
File size: 11447 byte(s)

1 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 using System.Collections;
8 using System.Runtime.InteropServices;
9 using System.Reflection;
10
11 namespace libxmltv.Core
12 {
13
14 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
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 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
42 public override string ToString()
43 {
44 return string.Format("Property Count: {0}", PropertyCount);
45 }
46 }
47 public class PropertyDictionary : PropertyDictionary<string, object>, IPropertyDictionary
48 {
49 public PropertyDictionary() : base() { }
50 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 public class PropertyDictionary<TKey, TValue> : IPropertyDictionary<TKey, TValue>
58 {
59 [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 public override string ToString()
67 {
68 return new PropertyValuePair<TKey, TValue>(name, value).ToString();
69 }
70 }
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 private Dictionary<TKey, TValue> properties;
101 public PropertyDictionary() { properties = new Dictionary<TKey, TValue>(); }
102 public PropertyDictionary(IPropertyDictionary<TKey, TValue> dictionary) :this() { foreach (var d in dictionary) { properties.Add(d.Name, d.Value); } }
103 public PropertyDictionary(IEqualityComparer<TKey> comparer) { properties = new Dictionary<TKey, TValue>(comparer); }
104 public PropertyDictionary(int capacity) { properties = new Dictionary<TKey, TValue>(capacity); }
105 public PropertyDictionary(IPropertyDictionary<TKey, TValue> dictionary, IEqualityComparer<TKey> comparer) : this(comparer) { foreach (var d in dictionary) { properties.Add(d.Name, d.Value); } }
106 public PropertyDictionary(int capacity, IEqualityComparer<TKey> comparer) { properties = new Dictionary<TKey, TValue>(capacity, comparer); }
107 protected PropertyDictionary(SerializationInfo info, StreamingContext context) { }
108 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 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 public void AddProperty(IPropertyValuePair<TKey, TValue> item) { AddProperty(item.Name, item.Value); }
154 public void ClearProperties() { properties.Clear(); }
155 public bool ContainsProperty(IPropertyValuePair<TKey, TValue> item) { return ContainsProperty(item.Name); }
156 public void CopyPropertiesTo(IPropertyValuePair<TKey, TValue>[] array, int arrayIndex)
157 {
158 var list = properties.ToList().Cast<IPropertyValuePair<TKey, TValue>>().ToList();
159 list.CopyTo(array, arrayIndex);
160 }
161 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 System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return properties.GetEnumerator(); }
164
165 public override string ToString()
166 {
167 return string.Format("Property Count: {0}", PropertyCount);
168 }
169 #region enumerator support
170 public class PropertyDictionaryEnumerator : IEnumerator<IPropertyValuePair<TKey, TValue>>, IDisposable
171 {
172 private PropertyDictionary<TKey, TValue> dictionary;
173 private int index;
174 private IPropertyValuePair<TKey, TValue> current;
175 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 this.version = dictionary.version;
183 this.index = 0;
184 this.getEnumeratorRetType = getEnumeratorRetType;
185 this.current = new PropertyValuePair<TKey, TValue>();
186 }
187
188 public IPropertyValuePair<TKey, TValue> Current
189 {
190 get { return this.current; }
191 }
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 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 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 this.current = (IPropertyValuePair<TKey, TValue>)(PropertyValuePair<TKey, TValue>)new KeyValuePair<TKey, TValue>();
241 }
242 }
243 #endregion
244 }
245
246
247 }

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