/****************************************************************************
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**
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** Copyright (C) 2018 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt VS Tools.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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using System;
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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 QtVsTools.Json
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{
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/// <summary>
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/// Provide serialization/deserialization of enum values marked with the [EnumString] attribute
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/// </summary>
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static class SerializableEnum
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{
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public static string Serialize<TEnum>(TEnum enumValue)
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where TEnum : struct
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{
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var type = enumValue.GetType();
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if (!type.IsEnum)
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return enumValue.ToString();
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var member = type.GetMember(enumValue.ToString());
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if (member == null || member.Length == 0)
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return enumValue.ToString();
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var attribs = member[0].GetCustomAttributes(typeof(EnumStringAttribute), false);
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if (attribs == null || attribs.Length == 0)
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return enumValue.ToString();
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var attrib = attribs
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.Where(x => x is EnumStringAttribute)
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.FirstOrDefault()
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as EnumStringAttribute;
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if (attrib == null)
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return enumValue.ToString();
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return attrib.ValueString;
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}
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public static TEnum Deserialize<TEnum>(string stringValue)
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where TEnum : struct
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{
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if (!typeof(TEnum).IsEnum)
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return default(TEnum);
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var members = typeof(TEnum).GetMembers();
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if (members == null || members.Length == 0)
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return default(TEnum);
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var member = members
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.Where(x =>
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{
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var attribs = x.GetCustomAttributes(typeof(EnumStringAttribute), false);
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if (attribs == null || attribs.Length == 0)
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return false;
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var attrib = attribs
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.Where(y => y is EnumStringAttribute)
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.FirstOrDefault()
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as EnumStringAttribute;
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if (attrib == null)
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return false;
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return attrib.ValueString == stringValue;
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})
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.FirstOrDefault();
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var field = member as FieldInfo;
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if (field == null)
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return default(TEnum);
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var objValue = field.GetValue(null);
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if (!(objValue is TEnum))
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return default(TEnum);
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return (TEnum)objValue;
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}
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}
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class EnumStringAttribute : Attribute
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{
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public string ValueString { get; private set; }
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public EnumStringAttribute(string enumValueString)
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{
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ValueString = enumValueString;
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}
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}
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}
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