Datatype_unsignedLong.cs

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namespace System.Xml.Schema;
 
internal class Datatype_unsignedLong : Datatype_nonNegativeInteger
{
    private static readonly Type s_atomicValueType = typeof(ulong);
 
    private static readonly Type s_listValueType = typeof(ulong[]);
 
    private static readonly FacetsChecker s_numeric10FacetsChecker = new Numeric10FacetsChecker(0m, 18446744073709551615m);
 
    internal override FacetsChecker FacetsChecker => s_numeric10FacetsChecker;
 
    public override XmlTypeCode TypeCode => XmlTypeCode.UnsignedLong;
 
    public override Type ValueType => s_atomicValueType;
 
    internal override Type ListValueType => s_listValueType;
 
    internal override int Compare(object value1, object value2)
    {
        return ((ulong)value1).CompareTo((ulong)value2);
    }
 
    internal override Exception TryParseValue(string s, XmlNameTable nameTable, IXmlNamespaceResolver nsmgr, out object typedValue)
    {
        typedValue = null;
        Exception ex = s_numeric10FacetsChecker.CheckLexicalFacets(ref s, this);
        if (ex == null)
        {
            ex = XmlConvert.TryToUInt64(s, out var result);
            if (ex == null)
            {
                ex = s_numeric10FacetsChecker.CheckValueFacets((decimal)result, (XmlSchemaDatatype)this);
                if (ex == null)
                {
                    typedValue = result;
                    return null;
                }
            }
        }
        return ex;
    }
}