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-rw-r--r--src/ProtocolBuffers/Collections/Dictionaries.cs230
1 files changed, 122 insertions, 108 deletions
diff --git a/src/ProtocolBuffers/Collections/Dictionaries.cs b/src/ProtocolBuffers/Collections/Dictionaries.cs
index 2a580385..1f3791b1 100644
--- a/src/ProtocolBuffers/Collections/Dictionaries.cs
+++ b/src/ProtocolBuffers/Collections/Dictionaries.cs
@@ -1,108 +1,122 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc. All rights reserved.
-// http://github.com/jskeet/dotnet-protobufs/
-// Original C++/Java/Python code:
-// http://code.google.com/p/protobuf/
-//
-// 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 Google Inc. 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.
-using System;
-using System.Collections;
-using System.Collections.Generic;
-
-namespace Google.ProtocolBuffers.Collections {
-
- /// <summary>
- /// Utility class for dictionaries.
- /// </summary>
- public static class Dictionaries {
-
- /// <summary>
- /// Compares two dictionaries for equality. Each value is compared with equality using Equals
- /// for non-IEnumerable implementations, and using EnumerableEquals otherwise.
- /// TODO(jonskeet): This is clearly pretty slow, and involves lots of boxing/unboxing...
- /// </summary>
- public static bool Equals<TKey, TValue>(IDictionary<TKey, TValue> left, IDictionary<TKey, TValue> right) {
- if (left.Count != right.Count) {
- return false;
- }
- foreach (KeyValuePair<TKey,TValue> leftEntry in left)
- {
- TValue rightValue;
- if (!right.TryGetValue(leftEntry.Key, out rightValue)) {
- return false;
- }
-
- IEnumerable leftEnumerable = leftEntry.Value as IEnumerable;
- IEnumerable rightEnumerable = rightValue as IEnumerable;
- if (leftEnumerable == null || rightEnumerable == null) {
- if (!Equals(leftEntry.Value, rightValue)) {
- return false;
- }
- } else {
- if (!Enumerables.Equals(leftEnumerable, rightEnumerable)) {
- return false;
- }
- }
- }
- return true;
- }
-
- public static IDictionary<TKey, TValue> AsReadOnly<TKey, TValue> (IDictionary<TKey, TValue> dictionary) {
- return dictionary.IsReadOnly ? dictionary : new ReadOnlyDictionary<TKey, TValue>(dictionary);
- }
-
- /// <summary>
- /// Creates a hashcode for a dictionary by XORing the hashcodes of all the fields
- /// and values. (By XORing, we avoid ordering issues.)
- /// TODO(jonskeet): Currently XORs other stuff too, and assumes non-null values.
- /// </summary>
- public static int GetHashCode<TKey, TValue>(IDictionary<TKey, TValue> dictionary) {
- int ret = 31;
- foreach (KeyValuePair<TKey, TValue> entry in dictionary) {
- int hash = entry.Key.GetHashCode() ^ GetDeepHashCode(entry.Value);
- ret ^= hash;
- }
- return ret;
- }
-
- /// <summary>
- /// Determines the hash of a value by either taking it directly or hashing all the elements
- /// for IEnumerable implementations.
- /// </summary>
- private static int GetDeepHashCode(object value) {
- IEnumerable iterable = value as IEnumerable;
- if (iterable == null) {
- return value.GetHashCode();
- }
- int hash = 29;
- foreach (object element in iterable) {
- hash = hash * 37 + element.GetHashCode();
- }
- return hash;
- }
- }
-}
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/protobuf/
+//
+// 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 Google Inc. 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.
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace Google.ProtocolBuffers.Collections
+{
+ /// <summary>
+ /// Utility class for dictionaries.
+ /// </summary>
+ public static class Dictionaries
+ {
+ /// <summary>
+ /// Compares two dictionaries for equality. Each value is compared with equality using Equals
+ /// for non-IEnumerable implementations, and using EnumerableEquals otherwise.
+ /// TODO(jonskeet): This is clearly pretty slow, and involves lots of boxing/unboxing...
+ /// </summary>
+ public static bool Equals<TKey, TValue>(IDictionary<TKey, TValue> left, IDictionary<TKey, TValue> right)
+ {
+ if (left.Count != right.Count)
+ {
+ return false;
+ }
+ foreach (KeyValuePair<TKey, TValue> leftEntry in left)
+ {
+ TValue rightValue;
+ if (!right.TryGetValue(leftEntry.Key, out rightValue))
+ {
+ return false;
+ }
+
+ IEnumerable leftEnumerable = leftEntry.Value as IEnumerable;
+ IEnumerable rightEnumerable = rightValue as IEnumerable;
+ if (leftEnumerable == null || rightEnumerable == null)
+ {
+ if (!Equals(leftEntry.Value, rightValue))
+ {
+ return false;
+ }
+ }
+ else
+ {
+ if (!Enumerables.Equals(leftEnumerable, rightEnumerable))
+ {
+ return false;
+ }
+ }
+ }
+ return true;
+ }
+
+ public static IDictionary<TKey, TValue> AsReadOnly<TKey, TValue>(IDictionary<TKey, TValue> dictionary)
+ {
+ return dictionary.IsReadOnly ? dictionary : new ReadOnlyDictionary<TKey, TValue>(dictionary);
+ }
+
+ /// <summary>
+ /// Creates a hashcode for a dictionary by XORing the hashcodes of all the fields
+ /// and values. (By XORing, we avoid ordering issues.)
+ /// TODO(jonskeet): Currently XORs other stuff too, and assumes non-null values.
+ /// </summary>
+ public static int GetHashCode<TKey, TValue>(IDictionary<TKey, TValue> dictionary)
+ {
+ int ret = 31;
+ foreach (KeyValuePair<TKey, TValue> entry in dictionary)
+ {
+ int hash = entry.Key.GetHashCode() ^ GetDeepHashCode(entry.Value);
+ ret ^= hash;
+ }
+ return ret;
+ }
+
+ /// <summary>
+ /// Determines the hash of a value by either taking it directly or hashing all the elements
+ /// for IEnumerable implementations.
+ /// </summary>
+ private static int GetDeepHashCode(object value)
+ {
+ IEnumerable iterable = value as IEnumerable;
+ if (iterable == null)
+ {
+ return value.GetHashCode();
+ }
+ int hash = 29;
+ foreach (object element in iterable)
+ {
+ hash = hash*37 + element.GetHashCode();
+ }
+ return hash;
+ }
+ }
+} \ No newline at end of file