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Viewing changes to lib/ServiceStack/src/ServiceStack.Common/EnumExtensions.cs

  • Committer: Package Import Robot
  • Author(s): Mirco Bauer
  • Date: 2013-05-25 22:11:31 UTC
  • mfrom: (1.2.12)
  • Revision ID: package-import@ubuntu.com-20130525221131-nd2mc0kzubuwyx20
Tags: 0.8.11-1
* [22d13d5] Imported Upstream version 0.8.11
* [6d2b95a] Refreshed patches
* [89eb66e] Added ServiceStack libraries to smuxi-engine package
* [848ab10] Enable Campfire engine
* [c6dbdc7] Always build db4o for predictable build result
* [13ec489] Exclude OS X specific libraries from dh_clideps

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Lines of Context:
lib/ServiceStack/src/ServiceStack.Common/EnumExtensions.cs
 
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using System;
 
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using System.Collections.Generic;
 
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using System.ComponentModel;
 
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using System.Linq;
 
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using System.Reflection;
 
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namespace ServiceStack.Common
 
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{
 
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    public static class EnumExtensions
 
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    {
 
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        /// <summary>
 
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        /// Gets the textual description of the enum if it has one. e.g.
 
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        /// 
 
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        /// <code>
 
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        /// enum UserColors
 
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        /// {
 
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        ///     [Description("Bright Red")]
 
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        ///     BrightRed
 
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        /// }
 
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        /// UserColors.BrightRed.ToDescription();
 
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        /// </code>
 
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        /// </summary>
 
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        /// <param name="enum"></param>
 
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        /// <returns></returns>
 
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        public static string ToDescription(this Enum @enum) 
 
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        {
 
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            var type = @enum.GetType();
 
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            var memInfo = type.GetMember(@enum.ToString());
 
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            if (memInfo != null && memInfo.Length > 0)
 
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            {
 
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                var attrs = memInfo[0].GetCustomAttributes(
 
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                    typeof(DescriptionAttribute),
 
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                    false);
 
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                if (attrs != null && attrs.Length > 0)
 
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                    return ((DescriptionAttribute)attrs[0]).Description;
 
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            }
 
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            return @enum.ToString();
 
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        }
 
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        public static List<string> ToList(this Enum @enum)
 
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        {
 
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#if !SILVERLIGHT4
 
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            return new List<string>(Enum.GetNames(@enum.GetType()));
 
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#else
 
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            return @enum.GetType().GetFields(BindingFlags.Static | BindingFlags.Public).Select(fi => fi.Name).ToList();
 
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#endif
 
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        }
 
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        public static bool Has<T>(this Enum type, T value)
 
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        {
 
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            try
 
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            {
 
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                return (((int)(object)type & (int)(object)value) == (int)(object)value);
 
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            }
 
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            catch
 
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            {
 
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                return false;
 
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            }
 
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        }
 
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        public static bool Is<T>(this Enum type, T value)
 
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        {
 
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            try
 
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            {
 
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                return (int)(object)type == (int)(object)value;
 
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            }
 
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            catch
 
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            {
 
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                return false;
 
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            }
 
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        }
 
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        public static T Add<T>(this Enum type, T value)
 
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        {
 
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            try
 
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            {
 
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                return (T)(object)(((int)(object)type | (int)(object)value));
 
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            }
 
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            catch (Exception ex)
 
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            {
 
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                throw new ArgumentException(
 
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                    string.Format(
 
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                        "Could not append value from enumerated type '{0}'.",
 
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                        typeof(T).Name
 
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                        ), ex);
 
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            }
 
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        }
 
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        public static T Remove<T>(this Enum type, T value)
 
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        {
 
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            try
 
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            {
 
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                return (T)(object)(((int)(object)type & ~(int)(object)value));
 
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            }
 
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            catch (Exception ex)
 
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            {
 
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                throw new ArgumentException(
 
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                    string.Format(
 
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                        "Could not remove value from enumerated type '{0}'.",
 
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                        typeof(T).Name
 
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                        ), ex);
 
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            }
 
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        }
 
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    }
 
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}
 
 
b'\\ No newline at end of file'