257 lines
9.0 KiB
C#
257 lines
9.0 KiB
C#
#region License
|
|
// Copyright (c) 2007 James Newton-King
|
|
//
|
|
// 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.
|
|
#endregion
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Globalization;
|
|
using System.Runtime.Serialization;
|
|
#if NET20
|
|
using Newtonsoft.Json.Utilities.LinqBridge;
|
|
#else
|
|
using System.Linq;
|
|
#endif
|
|
using System.Reflection;
|
|
|
|
namespace Newtonsoft.Json.Utilities
|
|
{
|
|
internal static class EnumUtils
|
|
{
|
|
private static readonly ThreadSafeStore<Type, BidirectionalDictionary<string, string>> EnumMemberNamesPerType = new ThreadSafeStore<Type, BidirectionalDictionary<string, string>>(InitializeEnumType);
|
|
|
|
private static BidirectionalDictionary<string, string> InitializeEnumType(Type type)
|
|
{
|
|
BidirectionalDictionary<string, string> map = new BidirectionalDictionary<string, string>(
|
|
StringComparer.OrdinalIgnoreCase,
|
|
StringComparer.OrdinalIgnoreCase);
|
|
|
|
foreach (FieldInfo f in type.GetFields())
|
|
{
|
|
string n1 = f.Name;
|
|
string n2;
|
|
|
|
#if !NET20
|
|
n2 = f.GetCustomAttributes(typeof(EnumMemberAttribute), true)
|
|
.Cast<EnumMemberAttribute>()
|
|
.Select(a => a.Value)
|
|
.SingleOrDefault() ?? f.Name;
|
|
#else
|
|
n2 = f.Name;
|
|
#endif
|
|
|
|
string s;
|
|
if (map.TryGetBySecond(n2, out s))
|
|
{
|
|
throw new InvalidOperationException("Enum name '{0}' already exists on enum '{1}'.".FormatWith(CultureInfo.InvariantCulture, n2, type.Name));
|
|
}
|
|
|
|
map.Set(n1, n2);
|
|
}
|
|
|
|
return map;
|
|
}
|
|
|
|
public static IList<T> GetFlagsValues<T>(T value) where T : struct
|
|
{
|
|
Type enumType = typeof(T);
|
|
|
|
if (!enumType.IsDefined(typeof(FlagsAttribute), false))
|
|
{
|
|
throw new ArgumentException("Enum type {0} is not a set of flags.".FormatWith(CultureInfo.InvariantCulture, enumType));
|
|
}
|
|
|
|
Type underlyingType = Enum.GetUnderlyingType(value.GetType());
|
|
|
|
ulong num = Convert.ToUInt64(value, CultureInfo.InvariantCulture);
|
|
IList<EnumValue<ulong>> enumNameValues = GetNamesAndValues<T>();
|
|
IList<T> selectedFlagsValues = new List<T>();
|
|
|
|
foreach (EnumValue<ulong> enumNameValue in enumNameValues)
|
|
{
|
|
if ((num & enumNameValue.Value) == enumNameValue.Value && enumNameValue.Value != 0)
|
|
{
|
|
selectedFlagsValues.Add((T)Convert.ChangeType(enumNameValue.Value, underlyingType, CultureInfo.CurrentCulture));
|
|
}
|
|
}
|
|
|
|
if (selectedFlagsValues.Count == 0 && enumNameValues.SingleOrDefault(v => v.Value == 0) != null)
|
|
{
|
|
selectedFlagsValues.Add(default(T));
|
|
}
|
|
|
|
return selectedFlagsValues;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a dictionary of the names and values of an Enum type.
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
public static IList<EnumValue<ulong>> GetNamesAndValues<T>() where T : struct
|
|
{
|
|
return GetNamesAndValues<ulong>(typeof(T));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets a dictionary of the names and values of an Enum type.
|
|
/// </summary>
|
|
/// <param name="enumType">The enum type to get names and values for.</param>
|
|
/// <returns></returns>
|
|
public static IList<EnumValue<TUnderlyingType>> GetNamesAndValues<TUnderlyingType>(Type enumType) where TUnderlyingType : struct
|
|
{
|
|
if (enumType == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(enumType));
|
|
}
|
|
|
|
if (!enumType.IsEnum())
|
|
{
|
|
throw new ArgumentException("Type {0} is not an Enum.".FormatWith(CultureInfo.InvariantCulture, enumType), nameof(enumType));
|
|
}
|
|
|
|
IList<object> enumValues = GetValues(enumType);
|
|
IList<string> enumNames = GetNames(enumType);
|
|
|
|
IList<EnumValue<TUnderlyingType>> nameValues = new List<EnumValue<TUnderlyingType>>();
|
|
|
|
for (int i = 0; i < enumValues.Count; i++)
|
|
{
|
|
try
|
|
{
|
|
nameValues.Add(new EnumValue<TUnderlyingType>(enumNames[i], (TUnderlyingType)Convert.ChangeType(enumValues[i], typeof(TUnderlyingType), CultureInfo.CurrentCulture)));
|
|
}
|
|
catch (OverflowException e)
|
|
{
|
|
throw new InvalidOperationException(
|
|
string.Format(CultureInfo.InvariantCulture, "Value from enum with the underlying type of {0} cannot be added to dictionary with a value type of {1}. Value was too large: {2}",
|
|
Enum.GetUnderlyingType(enumType), typeof(TUnderlyingType), Convert.ToUInt64(enumValues[i], CultureInfo.InvariantCulture)), e);
|
|
}
|
|
}
|
|
|
|
return nameValues;
|
|
}
|
|
|
|
public static IList<object> GetValues(Type enumType)
|
|
{
|
|
if (!enumType.IsEnum())
|
|
{
|
|
throw new ArgumentException("Type '" + enumType.Name + "' is not an enum.");
|
|
}
|
|
|
|
List<object> values = new List<object>();
|
|
|
|
var fields = enumType.GetFields().Where(f => f.IsLiteral);
|
|
|
|
foreach (FieldInfo field in fields)
|
|
{
|
|
object value = field.GetValue(enumType);
|
|
values.Add(value);
|
|
}
|
|
|
|
return values;
|
|
}
|
|
|
|
public static IList<string> GetNames(Type enumType)
|
|
{
|
|
if (!enumType.IsEnum())
|
|
{
|
|
throw new ArgumentException("Type '" + enumType.Name + "' is not an enum.");
|
|
}
|
|
|
|
List<string> values = new List<string>();
|
|
|
|
var fields = enumType.GetFields().Where(f => f.IsLiteral);
|
|
|
|
foreach (FieldInfo field in fields)
|
|
{
|
|
values.Add(field.Name);
|
|
}
|
|
|
|
return values;
|
|
}
|
|
|
|
public static object ParseEnumName(string enumText, bool isNullable, Type t)
|
|
{
|
|
if (enumText == string.Empty && isNullable)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
string finalEnumText;
|
|
|
|
BidirectionalDictionary<string, string> map = EnumMemberNamesPerType.Get(t);
|
|
if (enumText.IndexOf(',') != -1)
|
|
{
|
|
string[] names = enumText.Split(',');
|
|
for (int i = 0; i < names.Length; i++)
|
|
{
|
|
string name = names[i].Trim();
|
|
|
|
names[i] = ResolvedEnumName(map, name);
|
|
}
|
|
|
|
finalEnumText = string.Join(", ", names);
|
|
}
|
|
else
|
|
{
|
|
finalEnumText = ResolvedEnumName(map, enumText);
|
|
}
|
|
|
|
return Enum.Parse(t, finalEnumText, true);
|
|
}
|
|
|
|
public static string ToEnumName(Type enumType, string enumText, bool camelCaseText)
|
|
{
|
|
BidirectionalDictionary<string, string> map = EnumMemberNamesPerType.Get(enumType);
|
|
|
|
string[] names = enumText.Split(',');
|
|
for (int i = 0; i < names.Length; i++)
|
|
{
|
|
string name = names[i].Trim();
|
|
|
|
string resolvedEnumName;
|
|
map.TryGetByFirst(name, out resolvedEnumName);
|
|
resolvedEnumName = resolvedEnumName ?? name;
|
|
|
|
if (camelCaseText)
|
|
{
|
|
resolvedEnumName = StringUtils.ToCamelCase(resolvedEnumName);
|
|
}
|
|
|
|
names[i] = resolvedEnumName;
|
|
}
|
|
|
|
string finalName = string.Join(", ", names);
|
|
|
|
return finalName;
|
|
}
|
|
|
|
private static string ResolvedEnumName(BidirectionalDictionary<string, string> map, string enumText)
|
|
{
|
|
string resolvedEnumName;
|
|
map.TryGetBySecond(enumText, out resolvedEnumName);
|
|
resolvedEnumName = resolvedEnumName ?? enumText;
|
|
return resolvedEnumName;
|
|
}
|
|
}
|
|
} |