Adding a base attr class

gsscoder · gsscoder · commit 4d5d33a16aed · 2015-07-10T19:11:10.000+02:00
diff --git a/src/CommandLine/BaseAttribute.cs b/src/CommandLine/BaseAttribute.cs
@@ -0,0 +1,84 @@
+﻿using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace CommandLine
+{
+    public abstract class BaseAttribute
+    {
+        private int min;
+        private int max;
+        private object @default;
+
+        protected BaseAttribute()
+        {
+            min = -1;
+            max = -1;
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether a command line option is required.
+        /// </summary>
+        public bool Required
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// When applied to <see cref="System.Collections.Generic.IEnumerable{T}"/> properties defines
+        /// the lower range of items.
+        /// </summary>
+        /// <remarks>If not set, no lower range is enforced.</remarks>
+        public int Min
+        {
+            get { return min; }
+            set
+            {
+                if (value < 0)
+                {
+                    throw new ArgumentNullException("value");
+                }
+
+                min = value;
+            }
+        }
+
+        /// <summary>
+        /// When applied to <see cref="System.Collections.Generic.IEnumerable{T}"/> properties defines
+        /// the upper range of items.
+        /// </summary>
+        /// <remarks>If not set, no upper range is enforced.</remarks>
+        public int Max
+        {
+            get { return max; }
+            set
+            {
+                if (value < 0)
+                {
+                    throw new ArgumentNullException("value");
+                }
+
+                max = value;
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets mapped property default value.
+        /// </summary>
+        public object Default
+        {
+            get { return @default; }
+            set
+            {
+                if (value == null)
+                {
+                    throw new ArgumentNullException("value");
+                }
+
+                @default = value;
+            }
+        }
+    }
+}
diff --git a/src/CommandLine/CommandLine.csproj b/src/CommandLine/CommandLine.csproj
@@ -58,6 +58,7 @@
     <Compile Include="..\SharedAssemblyInfo.cs">
       <Link>Properties\SharedAssemblyInfo.cs</Link>
     </Compile>
+    <Compile Include="BaseAttribute.cs" />
     <Compile Include="Core\ArgumentsExtension.cs" />
     <Compile Include="Core\KeyValuePairHelper.cs" />
     <Compile Include="Core\PreprocessorGuards.cs" />
