DebugInfo.cs

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using System.Collections.Generic;
using System.Globalization;
using System.Runtime.CompilerServices;
 
namespace System.Linq.Expressions.Interpreter;
 
internal sealed class DebugInfo
{
    private sealed class DebugInfoComparer : IComparer<DebugInfo>
    {
        int IComparer<DebugInfo>.Compare(DebugInfo d1, DebugInfo d2)
        {
            if (d1.Index > d2.Index)
            {
                return 1;
            }
            if (d1.Index == d2.Index)
            {
                return 0;
            }
            return -1;
        }
    }
 
    public int StartLine;
 
    public int EndLine;
 
    public int Index;
 
    public string FileName;
 
    public bool IsClear;
 
    private static readonly DebugInfoComparer s_debugComparer = new DebugInfoComparer();
 
    public static DebugInfo GetMatchingDebugInfo(DebugInfo[] debugInfos, int index)
    {
        DebugInfo value = new DebugInfo
        {
            Index = index
        };
        int num = Array.BinarySearch(debugInfos, value, s_debugComparer);
        if (num < 0)
        {
            num = ~num;
            if (num == 0)
            {
                return null;
            }
            num--;
        }
        return debugInfos[num];
    }
 
    public override string ToString()
    {
        IFormatProvider invariantCulture;
        if (IsClear)
        {
            invariantCulture = CultureInfo.InvariantCulture;
            IFormatProvider provider = invariantCulture;
            DefaultInterpolatedStringHandler handler = new DefaultInterpolatedStringHandler(7, 1, invariantCulture);
            handler.AppendFormatted(Index);
            handler.AppendLiteral(": clear");
            return string.Create(provider, ref handler);
        }
        invariantCulture = CultureInfo.InvariantCulture;
        IFormatProvider provider2 = invariantCulture;
        DefaultInterpolatedStringHandler handler2 = new DefaultInterpolatedStringHandler(8, 4, invariantCulture);
        handler2.AppendFormatted(Index);
        handler2.AppendLiteral(": [");
        handler2.AppendFormatted(StartLine);
        handler2.AppendLiteral("-");
        handler2.AppendFormatted(EndLine);
        handler2.AppendLiteral("] '");
        handler2.AppendFormatted(FileName);
        handler2.AppendLiteral("'");
        return string.Create(provider2, ref handler2);
    }
}