Daily update 2 on 20240228 by nitload youmu

StgSharp.Common/HighPerformance/Lable.cs

@@ -0,0 +1,71 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="Lable.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the ¡°Software¡±), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED ¡°AS IS¡±, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System;
+using System.Runtime.CompilerServices;
+
+namespace StgSharp.HighPerformance
+{
+    public class DataLabel
+    {
+
+        private readonly string _name;
+
+        public DataLabel( string lableName )
+        {
+            _name = lableName;
+        }
+
+        public string Name
+        {
+            get => _name;
+        }
+
+        public override unsafe int GetHashCode()
+        {
+            ReadOnlySpan<char> nameSpan = _name.AsSpan();
+            fixed( char* cptr = nameSpan ) {
+                return InternalIO.Intrinsic
+                        .city_hash_simplify( cptr, _name.Length );
+            }
+        }
+
+    }
+
+    public static class DataLabelBuilder
+    {
+
+        public static DataLabel AsLabel( this string name )
+        {
+            return new DataLabel( name );
+        }
+
+    }
+}