Renormalize
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Stephan
@@ -1,109 +1,109 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace Umbraco.Core
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{
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/// <summary>
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/// Provides utility methods for handling enumerations.
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/// </summary>
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/// <remarks>
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/// Taken from http://damieng.com/blog/2010/10/17/enums-better-syntax-improved-performance-and-tryparse-in-net-3-5
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/// </remarks>
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public static class Enum<T>
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where T : struct
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{
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private static readonly List<T> Values;
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private static readonly Dictionary<string, T> InsensitiveNameToValue;
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private static readonly Dictionary<string, T> SensitiveNameToValue;
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private static readonly Dictionary<int, T> IntToValue;
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private static readonly Dictionary<T, string> ValueToName;
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static Enum()
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{
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Values = Enum.GetValues(typeof(T)).Cast<T>().ToList();
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IntToValue = new Dictionary<int, T>();
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ValueToName = new Dictionary<T, string>();
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SensitiveNameToValue = new Dictionary<string, T>();
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InsensitiveNameToValue = new Dictionary<string, T>();
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foreach (var value in Values)
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{
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var name = value.ToString();
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IntToValue[Convert.ToInt32(value)] = value;
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ValueToName[value] = name;
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SensitiveNameToValue[name] = value;
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InsensitiveNameToValue[name.ToLowerInvariant()] = value;
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}
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}
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public static bool IsDefined(T value)
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{
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return ValueToName.Keys.Contains(value);
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}
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public static bool IsDefined(string value)
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{
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return SensitiveNameToValue.Keys.Contains(value);
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}
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public static bool IsDefined(int value)
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{
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return IntToValue.Keys.Contains(value);
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}
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public static IEnumerable<T> GetValues()
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{
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return Values;
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}
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public static string[] GetNames()
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{
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return ValueToName.Values.ToArray();
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}
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public static string GetName(T value)
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{
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return ValueToName.TryGetValue(value, out var name) ? name : null;
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}
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public static T Parse(string value, bool ignoreCase = false)
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{
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var names = ignoreCase ? InsensitiveNameToValue : SensitiveNameToValue;
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if (ignoreCase) value = value.ToLowerInvariant();
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if (names.TryGetValue(value, out var parsed))
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return parsed;
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throw new ArgumentException($"Value \"{value}\"is not a valid {typeof(T).Name} enumeration value.", nameof(value));
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}
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public static bool TryParse(string value, out T returnValue, bool ignoreCase = false)
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{
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var names = ignoreCase ? InsensitiveNameToValue : SensitiveNameToValue;
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if (ignoreCase) value = value.ToLowerInvariant();
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return names.TryGetValue(value, out returnValue);
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}
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public static T? ParseOrNull(string value)
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{
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if (string.IsNullOrWhiteSpace(value))
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return null;
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if (InsensitiveNameToValue.TryGetValue(value.ToLowerInvariant(), out var parsed))
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return parsed;
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return null;
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}
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public static T? CastOrNull(int value)
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{
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if (IntToValue.TryGetValue(value, out var foundValue))
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return foundValue;
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return null;
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}
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}
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}
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace Umbraco.Core
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{
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/// <summary>
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/// Provides utility methods for handling enumerations.
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/// </summary>
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/// <remarks>
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/// Taken from http://damieng.com/blog/2010/10/17/enums-better-syntax-improved-performance-and-tryparse-in-net-3-5
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/// </remarks>
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public static class Enum<T>
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where T : struct
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{
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private static readonly List<T> Values;
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private static readonly Dictionary<string, T> InsensitiveNameToValue;
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private static readonly Dictionary<string, T> SensitiveNameToValue;
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private static readonly Dictionary<int, T> IntToValue;
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private static readonly Dictionary<T, string> ValueToName;
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static Enum()
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{
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Values = Enum.GetValues(typeof(T)).Cast<T>().ToList();
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IntToValue = new Dictionary<int, T>();
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ValueToName = new Dictionary<T, string>();
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SensitiveNameToValue = new Dictionary<string, T>();
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InsensitiveNameToValue = new Dictionary<string, T>();
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foreach (var value in Values)
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{
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var name = value.ToString();
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IntToValue[Convert.ToInt32(value)] = value;
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ValueToName[value] = name;
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SensitiveNameToValue[name] = value;
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InsensitiveNameToValue[name.ToLowerInvariant()] = value;
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}
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}
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public static bool IsDefined(T value)
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{
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return ValueToName.Keys.Contains(value);
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}
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public static bool IsDefined(string value)
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{
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return SensitiveNameToValue.Keys.Contains(value);
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}
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public static bool IsDefined(int value)
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{
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return IntToValue.Keys.Contains(value);
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}
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public static IEnumerable<T> GetValues()
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{
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return Values;
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}
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public static string[] GetNames()
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{
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return ValueToName.Values.ToArray();
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}
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public static string GetName(T value)
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{
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return ValueToName.TryGetValue(value, out var name) ? name : null;
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}
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public static T Parse(string value, bool ignoreCase = false)
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{
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var names = ignoreCase ? InsensitiveNameToValue : SensitiveNameToValue;
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if (ignoreCase) value = value.ToLowerInvariant();
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if (names.TryGetValue(value, out var parsed))
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return parsed;
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throw new ArgumentException($"Value \"{value}\"is not a valid {typeof(T).Name} enumeration value.", nameof(value));
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}
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public static bool TryParse(string value, out T returnValue, bool ignoreCase = false)
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{
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var names = ignoreCase ? InsensitiveNameToValue : SensitiveNameToValue;
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if (ignoreCase) value = value.ToLowerInvariant();
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return names.TryGetValue(value, out returnValue);
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}
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public static T? ParseOrNull(string value)
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{
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if (string.IsNullOrWhiteSpace(value))
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return null;
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if (InsensitiveNameToValue.TryGetValue(value.ToLowerInvariant(), out var parsed))
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return parsed;
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return null;
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}
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public static T? CastOrNull(int value)
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{
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if (IntToValue.TryGetValue(value, out var foundValue))
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return foundValue;
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return null;
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}
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}
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}
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