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// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
using System.Runtime;
using System.Runtime.CompilerServices;
namespace System
{
[FriendAccessAllowed]
internal static class CompatibilitySwitches
{
private static bool s_AreSwitchesSet;
#if FEATURE_CORECLR && !FEATURE_CORESYSTEM
private static bool s_isAppEarlierThanSilverlight4;
#endif //FEATURE_CORECLR && !FEATURE_CORESYSTEM
#if FEATURE_LEGACYNETCF
private static bool s_isAppEarlierThanWindowsPhone8;
private static bool s_isAppEarlierThanWindowsPhoneMango;
#endif //FEATURE_LEGACYNETCF
#if FEATURE_CORECLR
private static bool s_isAppSilverlight81; // The app targets SL8.1 version
private static bool s_useLatestBehaviorWhenTFMNotSpecified; // Which behavior to use when the TFM is not specified.
#endif //FEATURE_CORECLR
#if !FEATURE_CORECLR
private static bool s_isNetFx40TimeSpanLegacyFormatMode;
private static bool s_isNetFx40LegacySecurityPolicy;
private static bool s_isNetFx45LegacyManagedDeflateStream;
#endif //!FEATURE_CORECLR
public static bool IsCompatibilityBehaviorDefined
{
get
{
return s_AreSwitchesSet;
}
}
private static bool IsCompatibilitySwitchSet(string compatibilitySwitch)
{
bool? result = AppDomain.CurrentDomain.IsCompatibilitySwitchSet(compatibilitySwitch);
return (result.HasValue && result.Value);
}
internal static void InitializeSwitches()
{
#if FEATURE_CORECLR && !FEATURE_CORESYSTEM
s_isAppEarlierThanSilverlight4 = IsCompatibilitySwitchSet("APP_EARLIER_THAN_SL4.0");
#endif //FEATURE_CORECLR && !FEATURE_CORESYSTEM
#if FEATURE_CORECLR
s_isAppSilverlight81 = IsCompatibilitySwitchSet("WindowsPhone_5.1.0.0");
s_useLatestBehaviorWhenTFMNotSpecified = IsCompatibilitySwitchSet("UseLatestBehaviorWhenTFMMissing");
#endif //FEATURE_CORECLR
#if FEATURE_LEGACYNETCF
s_isAppEarlierThanWindowsPhoneMango = IsCompatibilitySwitchSet("WindowsPhone_3.7.0.0");
s_isAppEarlierThanWindowsPhone8 = s_isAppEarlierThanWindowsPhoneMango ||
IsCompatibilitySwitchSet("WindowsPhone_3.8.0.0");
#endif //FEATURE_LEGACYNETCF
#if !FEATURE_CORECLR
s_isNetFx40TimeSpanLegacyFormatMode = IsCompatibilitySwitchSet("NetFx40_TimeSpanLegacyFormatMode");
s_isNetFx40LegacySecurityPolicy = IsCompatibilitySwitchSet("NetFx40_LegacySecurityPolicy");
s_isNetFx45LegacyManagedDeflateStream = IsCompatibilitySwitchSet("NetFx45_LegacyManagedDeflateStream");
#endif //FEATURE_CORECLR
s_AreSwitchesSet = true;
}
public static bool IsAppEarlierThanSilverlight4
{
get
{
#if FEATURE_CORECLR && !FEATURE_CORESYSTEM
return s_isAppEarlierThanSilverlight4;
#else
return false;
#endif //FEATURE_CORECLR && !FEATURE_CORESYSTEM
}
}
#if FEATURE_CORECLR
/// <summary>
/// This property returns whether the app is hosted under SL 8.1 version
/// </summary>
internal static bool IsAppSilverlight81
{
get
{
// PS - Do not use this property for adding quirks. Please use the exposed properties of BinaryCompatiblity class instead.
return s_isAppSilverlight81;
}
}
/// <summary>
/// This property returns whether to give the latest behavior when the TFM is missing
/// </summary>
internal static bool UseLatestBehaviorWhenTFMNotSpecified
{
get
{
return s_useLatestBehaviorWhenTFMNotSpecified;
}
}
#endif //FEATURE_CORECLR
public static bool IsAppEarlierThanWindowsPhone8
{
get
{
#if FEATURE_LEGACYNETCF
return s_isAppEarlierThanWindowsPhone8;
#else
return false;
#endif //FEATURE_LEGACYNETCF
}
}
public static bool IsAppEarlierThanWindowsPhoneMango
{
get
{
#if FEATURE_LEGACYNETCF
return s_isAppEarlierThanWindowsPhoneMango;
#else
return false;
#endif //FEATURE_LEGACYNETCF
}
}
public static bool IsNetFx40TimeSpanLegacyFormatMode
{
get
{
#if !FEATURE_CORECLR
return s_isNetFx40TimeSpanLegacyFormatMode;
#else
return false;
#endif //!FEATURE_CORECLR
}
}
public static bool IsNetFx40LegacySecurityPolicy
{
get
{
#if !FEATURE_CORECLR
return s_isNetFx40LegacySecurityPolicy;
#else
return false;
#endif //!FEATURE_CORECLR
}
}
public static bool IsNetFx45LegacyManagedDeflateStream
{
get
{
#if !FEATURE_CORECLR
return s_isNetFx45LegacyManagedDeflateStream;
#else
return false;
#endif //!FEATURE_CORECLR
}
}
}
}
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