UnionFacetsChecker.cs

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using System.Collections;
 
namespace System.Xml.Schema;
 
internal sealed class UnionFacetsChecker : FacetsChecker
{
    internal override Exception CheckValueFacets(object value, XmlSchemaDatatype datatype)
    {
        RestrictionFacets restriction = datatype.Restriction;
        RestrictionFlags restrictionFlags = restriction?.Flags ?? ((RestrictionFlags)0);
        if ((restrictionFlags & RestrictionFlags.Enumeration) != 0 && !MatchEnumeration(value, restriction.Enumeration, datatype))
        {
            return new XmlSchemaException(System.SR.Sch_EnumerationConstraintFailed, string.Empty);
        }
        return null;
    }
 
    internal override bool MatchEnumeration(object value, ArrayList enumeration, XmlSchemaDatatype datatype)
    {
        for (int i = 0; i < enumeration.Count; i++)
        {
            if (datatype.Compare(value, enumeration[i]) == 0)
            {
                return true;
            }
        }
        return false;
    }
}