/src/Boo.Lang/Hash.cs
C# | 114 lines | 72 code | 14 blank | 28 comment | 14 complexity | 75549aee3b0dd5e5dd188edb77191e4c MD5 | raw file
Possible License(s): GPL-2.0
- #region license
- // Copyright (c) 2004, Rodrigo B. de Oliveira (rbo@acm.org)
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without modification,
- // are permitted provided that the following conditions are met:
- //
- // * Redistributions of source code must retain the above copyright notice,
- // this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above copyright notice,
- // this list of conditions and the following disclaimer in the documentation
- // and/or other materials provided with the distribution.
- // * Neither the name of Rodrigo B. de Oliveira nor the names of its
- // contributors may be used to endorse or promote products derived from this
- // software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
- // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- #endregion
-
- using System;
- using System.Collections;
- using System.Runtime.Serialization;
- using Boo.Lang.Runtime;
-
- namespace Boo.Lang
- {
- /// <summary>
- /// Hash.
- /// </summary>
- [Serializable]
- [EnumeratorItemType(typeof(DictionaryEntry))]
- public class Hash : Hashtable
- {
- public Hash() : base(BooHashCodeProvider.Default)
- {
- }
-
- public Hash(IDictionary other) : this()
- {
- if (null == other)
- {
- throw new ArgumentNullException("other");
- }
- foreach (DictionaryEntry entry in other)
- {
- Add(entry.Key, entry.Value);
- }
- }
-
- public Hash(IEnumerable enumerable) : this()
- {
- if (null == enumerable)
- {
- throw new ArgumentNullException("enumerable");
- }
-
- foreach (Array tuple in enumerable)
- {
- Add(tuple.GetValue(0), tuple.GetValue(1));
- }
- }
-
- public Hash(bool caseInsensitive) : base(StringComparer.InvariantCultureIgnoreCase)
- {
- }
-
- public Hash(SerializationInfo info, StreamingContext context) : base(info, context)
- {
- }
-
- override public object Clone()
- {
- return new Hash(this);
- }
-
- public override bool Equals(object obj)
- {
- if (this == obj) return true;
- if (obj == null) return false;
- if (GetType() != obj.GetType()) return false;
-
- Hash other = (Hash) obj;
- if (Count != other.Count) return false;
-
- foreach (DictionaryEntry entry in other)
- {
- if (!ContainsKey(entry.Key)) return false;
- if (!RuntimeServices.EqualityOperator(entry.Value, this[entry.Key])) return false;
- }
- return true;
- }
-
- public override int GetHashCode()
- {
- int hashCode = 0;
-
- foreach (object item in this)
- {
- hashCode ^= GetHash(item);
- }
-
- return hashCode;
- }
- }
- }