SR.cs

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using System.Resources;
using FxResources.System.Linq;
 
namespace System;
 
internal static class SR
{
    private static readonly bool s_usingResourceKeys = AppContext.TryGetSwitch("System.Resources.UseSystemResourceKeys", out var isEnabled) && isEnabled;
 
    private static ResourceManager s_resourceManager;
 
    internal static ResourceManager ResourceManager => s_resourceManager ?? (s_resourceManager = new ResourceManager(typeof(SR)));
 
    internal static string EmptyEnumerable => GetResourceString("EmptyEnumerable");
 
    internal static string MoreThanOneElement => GetResourceString("MoreThanOneElement");
 
    internal static string MoreThanOneMatch => GetResourceString("MoreThanOneMatch");
 
    internal static string NoElements => GetResourceString("NoElements");
 
    internal static string NoMatch => GetResourceString("NoMatch");
 
    private static bool UsingResourceKeys()
    {
        return s_usingResourceKeys;
    }
 
    internal static string GetResourceString(string resourceKey)
    {
        if (UsingResourceKeys())
        {
            return resourceKey;
        }
        string result = null;
        try
        {
            result = ResourceManager.GetString(resourceKey);
        }
        catch (MissingManifestResourceException)
        {
        }
        return result;
    }
}