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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
namespace System
{
internal static partial class AppContextDefaultValues
{
internal static readonly string SwitchNoAsyncCurrentCulture = "Switch.System.Globalization.NoAsyncCurrentCulture";
internal static readonly string SwitchThrowExceptionIfDisposedCancellationTokenSource = "Switch.System.Threading.ThrowExceptionIfDisposedCancellationTokenSource";
internal static readonly string SwitchPreserveEventListnerObjectIdentity = "Switch.System.Diagnostics.EventSource.PreserveEventListnerObjectIdentity";
// This is a partial method. Platforms can provide an implementation of it that will set override values
// from whatever mechanism is available on that platform. If no implementation is provided, the compiler is going to remove the calls
// to it from the code
// We are going to have an implementation of this method for the Desktop platform that will read the overrides from app.config, registry and
// the shim database. Additional implementation can be provided for other platforms.
static partial void PopulateOverrideValuesPartial();
static partial void PopulateDefaultValuesPartial(string platformIdentifier, string profile, int version)
{
// When defining a new switch you should add it to the last known version.
// For instance, if you are adding a switch in .NET 4.6 (the release after 4.5.2) you should defined your switch
// like this:
// if (version <= 40502) ...
// This ensures that all previous versions of that platform (up-to 4.5.2) will get the old behavior by default
// NOTE: When adding a default value for a switch please make sure that the default value is added to ALL of the existing platforms!
// NOTE: When adding a new if statement for the version please ensure that ALL previous switches are enabled (ie. don't use else if)
switch (platformIdentifier)
{
case ".NETCore":
case ".NETFramework":
{
if (version <= 40502)
{
AppContext.DefineSwitchDefault(SwitchNoAsyncCurrentCulture, true);
AppContext.DefineSwitchDefault(SwitchThrowExceptionIfDisposedCancellationTokenSource, true);
}
break;
}
case "WindowsPhone":
case "WindowsPhoneApp":
{
if (version <= 80100)
{
AppContext.DefineSwitchDefault(SwitchNoAsyncCurrentCulture, true);
AppContext.DefineSwitchDefault(SwitchThrowExceptionIfDisposedCancellationTokenSource, true);
}
break;
}
}
// At this point we should read the overrides if any are defined
PopulateOverrideValuesPartial();
}
}
}
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