StateMachine.cs

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using System.Xml.XPath;
 
namespace System.Xml.Xsl.XsltOld;
 
internal sealed class StateMachine
{
    private int _State;
 
    private static readonly int[][] s_BeginTransitions = new int[10][]
    {
        new int[12]
        {
            16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
            16, 16
        },
        new int[12]
        {
            40961, 42241, 16, 16, 41985, 16, 16, 41985, 40961, 106497,
            16, 16
        },
        new int[12]
        {
            16, 261, 16, 16, 5, 16, 16, 5, 16, 16,
            16, 16
        },
        new int[12]
        {
            16, 258, 16, 16, 2, 16, 16, 16, 16, 16,
            16, 16
        },
        new int[12]
        {
            8200, 9480, 259, 3, 9224, 262, 6, 9224, 8, 73736,
            10, 11
        },
        new int[12]
        {
            8200, 9480, 259, 3, 9224, 262, 6, 9224, 8, 73736,
            10, 11
        },
        new int[12]
        {
            8200, 9480, 259, 3, 9224, 262, 6, 9224, 8, 73736,
            10, 11
        },
        new int[12]
        {
            8203, 9483, 16, 16, 9227, 16, 16, 9227, 8203, 73739,
            16, 16
        },
        new int[12]
        {
            8202, 9482, 16, 16, 9226, 16, 16, 9226, 8202, 73738,
            16, 16
        },
        new int[12]
        {
            16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
            16, 16
        }
    };
 
    private static readonly int[][] s_EndTransitions = new int[10][]
    {
        new int[12]
        {
            48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
            48, 48
        },
        new int[12]
        {
            48, 94217, 48, 48, 94729, 48, 48, 94729, 92681, 92681,
            48, 48
        },
        new int[12]
        {
            48, 48, 48, 48, 48, 7, 519, 48, 48, 48,
            48, 48
        },
        new int[12]
        {
            48, 48, 4, 516, 48, 48, 48, 48, 48, 48,
            48, 48
        },
        new int[12]
        {
            48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
            48, 48
        },
        new int[12]
        {
            48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
            48, 48
        },
        new int[12]
        {
            48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
            48, 48
        },
        new int[12]
        {
            48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
            48, 16393
        },
        new int[12]
        {
            48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
            16393, 48
        },
        new int[12]
        {
            48, 48, 48, 48, 48, 48, 48, 48, 48, 48,
            48, 48
        }
    };
 
    internal int State
    {
        get
        {
            return _State;
        }
        set
        {
            _State = value;
        }
    }
 
    internal StateMachine()
    {
        _State = 0;
    }
 
    internal void Reset()
    {
        _State = 0;
    }
 
    internal int BeginOutlook(XPathNodeType nodeType)
    {
        return s_BeginTransitions[(int)nodeType][_State];
    }
 
    internal int Begin(XPathNodeType nodeType)
    {
        int num = s_BeginTransitions[(int)nodeType][_State];
        if (num != 16 && num != 32)
        {
            _State = num & 0xF;
        }
        return num;
    }
 
    internal int EndOutlook(XPathNodeType nodeType)
    {
        return s_EndTransitions[(int)nodeType][_State];
    }
 
    internal int End(XPathNodeType nodeType)
    {
        int num = s_EndTransitions[(int)nodeType][_State];
        if (num != 16 && num != 32)
        {
            _State = num & 0xF;
        }
        return num;
    }
}