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Make GlobalizationMode code consistent #55039

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Jul 1, 2021
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Make GlobalizationMode code consistent #55039

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Make GlobalizationMode code consistent
tarekgh Jul 1, 2021
8b941fa
Update src/libraries/System.Private.CoreLib/src/System/Globalization/…
tarekgh Jul 1, 2021
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10 changes: 2 additions & 8 deletions src/libraries/System.Private.CoreLib/src/System/Globalization/GlobalizationMode.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -11,23 +11,17 @@ internal static partial class GlobalizationMode
// split from GlobalizationMode so the whole class can be trimmed when Invariant=true.
private static partial class Settings
{
internal static bool Invariant { get; } = GetInvariantSwitchValue();
internal static readonly bool PredefinedCulturesOnly = AppContextConfigHelper.GetBooleanConfig("System.Globalization.PredefinedCulturesOnly", "DOTNET_SYSTEM_GLOBALIZATION_PREDEFINED_CULTURES_ONLY", Invariant);
internal static bool Invariant { get; } = AppContextConfigHelper.GetBooleanConfig("System.Globalization.Invariant", "DOTNET_SYSTEM_GLOBALIZATION_INVARIANT");
internal static bool PredefinedCulturesOnly { get; } =AppContextConfigHelper.GetBooleanConfig("System.Globalization.PredefinedCulturesOnly", "DOTNET_SYSTEM_GLOBALIZATION_PREDEFINED_CULTURES_ONLY", Invariant);
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}

// Note: Invariant=true and Invariant=false are substituted at different levels in the ILLink.Substitutions file.
// This allows for the whole Settings nested class to be trimmed when Invariant=true, and allows for the Settings
// static cctor (on Unix) to be preserved when Invariant=false.
internal static bool Invariant => Settings.Invariant;

internal static bool PredefinedCulturesOnly => Settings.PredefinedCulturesOnly;

private static bool GetInvariantSwitchValue() =>
AppContextConfigHelper.GetBooleanConfig("System.Globalization.Invariant", "DOTNET_SYSTEM_GLOBALIZATION_INVARIANT");

private static bool TryGetAppLocalIcuSwitchValue([NotNullWhen(true)] out string? value) =>
TryGetStringValue("System.Globalization.AppLocalIcu", "DOTNET_SYSTEM_GLOBALIZATION_APPLOCALICU", out value);

private static bool TryGetStringValue(string switchName, string envVariable, [NotNullWhen(true)] out string? value)
{
value = AppContext.GetData(switchName) as string;
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