Capture.cs

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namespace System.Text.RegularExpressions;
 
public class Capture
{
    public int Index { get; private protected set; }
 
    public int Length { get; private protected set; }
 
    internal string Text { get; set; }
 
    public string Value => Text.Substring(Index, Length);
 
    public ReadOnlySpan<char> ValueSpan => Text.AsSpan(Index, Length);
 
    internal Capture(string text, int index, int length)
    {
        Text = text;
        Index = index;
        Length = length;
    }
 
    public override string ToString()
    {
        return Value;
    }
 
    internal ReadOnlyMemory<char> GetLeftSubstring()
    {
        return Text.AsMemory(0, Index);
    }
 
    internal ReadOnlyMemory<char> GetRightSubstring()
    {
        return Text.AsMemory(Index + Length, Text.Length - Index - Length);
    }
}