init

Common/DTS.Common.Serialization/.svn/pristine/ee/ee31968071408bad76d39d85ec1506c596a32fb3.svn-base

@@ -0,0 +1,83 @@
+using System;
+using System.Linq;
+
+namespace DTS.Serialization.IRIGCh10.Attributes
+{
+    /// <summary>
+    /// this class is used to annotate enums with a version attribute
+    /// for example each data packet type has a corresponding version number
+    /// example TABLE 10-7. DATA TYPE NAMES AND DESCRIPTIONS in chapter 10.pdf
+    /// </summary>
+    [AttributeUsage(AttributeTargets.All)]
+    public class DataTypeVersionValueAttribute : Attribute
+    {
+        /// <summary>Specifies the default value for the <see cref="DataTypeVersionValueAttribute" />, which is 0x00. This <see langword="static" /> field is read-only.</summary>
+        public static readonly DataTypeVersionValueAttribute Default = new DataTypeVersionValueAttribute();
+        private byte _dataTypeVersion;
+
+        /// <summary>Initializes a new instance of the <see cref="DataTypeVersionValueAttribute" /> class with no parameters.</summary>
+        public DataTypeVersionValueAttribute()
+            : this(0x00)
+        {
+        }
+
+        /// <summary>Initializes a new instance of the <see cref="DataTypeVersionValueAttribute" /> class with a DataTypeVersionValue.</summary>
+        /// <param name="dataTypeVersion">The data type version. </param>
+        public DataTypeVersionValueAttribute(byte dataTypeVersion)
+        {
+            _dataTypeVersion = dataTypeVersion;
+        }
+
+        /// <summary>Gets the data type version stored in this attribute.</summary>
+        /// <returns>The data type version stored in this attribute.</returns>
+        public virtual byte DataTypeVersion => DataTypeVersionValue;
+
+        /// <summary>Gets or sets the byte stored as the datatype version.</summary>
+        /// <returns>The byte stored as the data type version. The default value is 0x00.</returns>
+        protected byte DataTypeVersionValue
+        {
+            get => _dataTypeVersion;
+            set => _dataTypeVersion = value;
+        }
+
+        /// <summary>Returns whether the value of the given object is equal to the current <see cref="DataTypeVersionValueAttribute" />.</summary>
+        /// <param name="obj">The object to test the value equality of. </param>
+        /// <returns>
+        /// <see langword="true" /> if the value of the given object is equal to that of the current; otherwise, <see langword="false" />.</returns>
+        public override bool Equals(object obj)
+        {
+            if (obj == this)
+                return true;
+            if (obj is DataTypeVersionValueAttribute attribute)
+                return attribute.DataTypeVersion == DataTypeVersion;
+            return false;
+        }
+
+        /// <summary>Returns the hash code for this instance.</summary>
+        /// <returns>A 32-bit signed integer hash code.</returns>
+        public override int GetHashCode()
+        {
+            return DataTypeVersion.GetHashCode();
+        }
+
+        /// <summary>Returns a value indicating whether this is the default <see cref="DataTypeVersionValueAttribute" /> instance.</summary>
+        /// <returns>
+        /// <see langword="true" />, if this is the default <see cref="DataTypeVersionValueAttribute" /> instance; otherwise, <see langword="false" />.</returns>
+        public override bool IsDefaultAttribute()
+        {
+            return Equals(Default);
+        }
+
+        public static byte GetDataTypeVersionValue(Enum value)
+        {
+            var fi = value.GetType().GetField(value.ToString());
+            var attributes = (DataTypeVersionValueAttribute[])fi.GetCustomAttributes(
+                typeof(DataTypeVersionValueAttribute), false);
+            if (attributes.Any())
+            {
+                return attributes.First().DataTypeVersionValue;
+            }
+            return Default.DataTypeVersionValue;
+        }
+    }
+}