protobuf/csharp/src/ProtocolBuffers/FrameworkPortability.cs

#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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#endregion

using System;
using System.Text.RegularExpressions;

namespace Google.Protobuf
{
    /// <summary>
    /// Class containing helpful workarounds for various platform compatibility
    /// </summary>
    internal static class FrameworkPortability
    {
        // The value of RegexOptions.Compiled is 8. We can test for the presence at
        // execution time using Enum.IsDefined, so a single build will do the right thing
        // on each platform.
        internal static readonly RegexOptions CompiledRegexWhereAvailable =
            Enum.IsDefined(typeof(RegexOptions), 8) ? (RegexOptions)8 : RegexOptions.None;
    }
}