158 lines
4.6 KiB
C#
158 lines
4.6 KiB
C#
// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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using System.Runtime;
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using System.Runtime.CompilerServices;
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namespace System
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{
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[FriendAccessAllowed]
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internal static class CompatibilitySwitches
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{
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private static bool s_AreSwitchesSet;
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#if FEATURE_CORECLR && !FEATURE_CORESYSTEM
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private static bool s_isAppEarlierThanSilverlight4;
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#endif //FEATURE_CORECLR && !FEATURE_CORESYSTEM
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#if FEATURE_LEGACYNETCF
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private static bool s_isAppEarlierThanWindowsPhone8;
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private static bool s_isAppEarlierThanWindowsPhoneMango;
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#endif //FEATURE_LEGACYNETCF
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#if !FEATURE_CORECLR
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private static bool s_isNetFx40TimeSpanLegacyFormatMode;
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private static bool s_isNetFx40LegacySecurityPolicy;
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private static bool s_isNetFx45LegacyManagedDeflateStream;
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#endif //!FEATURE_CORECLR
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public static bool IsCompatibilityBehaviorDefined
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{
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get
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{
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return s_AreSwitchesSet;
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}
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}
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private static bool IsCompatibilitySwitchSet(string compatibilitySwitch)
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{
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bool? result = AppDomain.CurrentDomain.IsCompatibilitySwitchSet(compatibilitySwitch);
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return (result.HasValue && result.Value);
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}
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internal static void InitializeSwitches()
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{
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#if FEATURE_CORECLR && !FEATURE_CORESYSTEM
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s_isAppEarlierThanSilverlight4 = IsCompatibilitySwitchSet("APP_EARLIER_THAN_SL4.0");
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#endif //FEATURE_CORECLR && !FEATURE_CORESYSTEM
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#if FEATURE_LEGACYNETCF
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s_isAppEarlierThanWindowsPhoneMango = IsCompatibilitySwitchSet("WindowsPhone_3.7.0.0");
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s_isAppEarlierThanWindowsPhone8 = s_isAppEarlierThanWindowsPhoneMango ||
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IsCompatibilitySwitchSet("WindowsPhone_3.8.0.0");
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#endif //FEATURE_LEGACYNETCF
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#if !FEATURE_CORECLR
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s_isNetFx40TimeSpanLegacyFormatMode = IsCompatibilitySwitchSet("NetFx40_TimeSpanLegacyFormatMode");
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s_isNetFx40LegacySecurityPolicy = IsCompatibilitySwitchSet("NetFx40_LegacySecurityPolicy");
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s_isNetFx45LegacyManagedDeflateStream = IsCompatibilitySwitchSet("NetFx45_LegacyManagedDeflateStream");
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#endif //FEATURE_CORECLR
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s_AreSwitchesSet = true;
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}
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public static bool IsAppEarlierThanSilverlight4
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{
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#if !FEATURE_CORECLR
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[TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
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#endif
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get
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{
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#if FEATURE_CORECLR && !FEATURE_CORESYSTEM
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return s_isAppEarlierThanSilverlight4;
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#else
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return false;
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#endif //FEATURE_CORECLR && !FEATURE_CORESYSTEM
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}
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}
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public static bool IsAppEarlierThanWindowsPhone8
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{
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#if !FEATURE_CORECLR
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[TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
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#endif
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get
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{
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#if FEATURE_LEGACYNETCF
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return s_isAppEarlierThanWindowsPhone8;
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#else
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return false;
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#endif //FEATURE_LEGACYNETCF
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}
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}
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public static bool IsAppEarlierThanWindowsPhoneMango
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{
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#if !FEATURE_CORECLR
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[TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
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#endif
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get
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{
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#if FEATURE_LEGACYNETCF
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return s_isAppEarlierThanWindowsPhoneMango;
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#else
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return false;
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#endif //FEATURE_LEGACYNETCF
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}
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}
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public static bool IsNetFx40TimeSpanLegacyFormatMode
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{
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#if !FEATURE_CORECLR
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[TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
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#endif
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get
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{
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#if !FEATURE_CORECLR
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return s_isNetFx40TimeSpanLegacyFormatMode;
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#else
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return false;
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#endif //!FEATURE_CORECLR
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}
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}
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public static bool IsNetFx40LegacySecurityPolicy
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{
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#if !FEATURE_CORECLR
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[TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
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#endif
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get
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{
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#if !FEATURE_CORECLR
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return s_isNetFx40LegacySecurityPolicy;
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#else
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return false;
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#endif //!FEATURE_CORECLR
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}
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}
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public static bool IsNetFx45LegacyManagedDeflateStream
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{
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#if !FEATURE_CORECLR
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[TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
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#endif
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get
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{
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#if !FEATURE_CORECLR
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return s_isNetFx45LegacyManagedDeflateStream;
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#else
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return false;
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#endif //!FEATURE_CORECLR
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}
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}
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}
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}
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