Datatype_QName.cs

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namespace System.Xml.Schema;
 
internal sealed class Datatype_QName : Datatype_anySimpleType
{
    private static readonly Type s_atomicValueType = typeof(XmlQualifiedName);
 
    private static readonly Type s_listValueType = typeof(XmlQualifiedName[]);
 
    internal override FacetsChecker FacetsChecker => DatatypeImplementation.qnameFacetsChecker;
 
    public override XmlTypeCode TypeCode => XmlTypeCode.QName;
 
    public override XmlTokenizedType TokenizedType => XmlTokenizedType.QName;
 
    internal override RestrictionFlags ValidRestrictionFlags => RestrictionFlags.Length | RestrictionFlags.MinLength | RestrictionFlags.MaxLength | RestrictionFlags.Pattern | RestrictionFlags.Enumeration | RestrictionFlags.WhiteSpace;
 
    public override Type ValueType => s_atomicValueType;
 
    internal override Type ListValueType => s_listValueType;
 
    internal override XmlSchemaWhiteSpace BuiltInWhitespaceFacet => XmlSchemaWhiteSpace.Collapse;
 
    internal override XmlValueConverter CreateValueConverter(XmlSchemaType schemaType)
    {
        return XmlMiscConverter.Create(schemaType);
    }
 
    internal override Exception TryParseValue(string s, XmlNameTable nameTable, IXmlNamespaceResolver nsmgr, out object typedValue)
    {
        typedValue = null;
        if (s == null || s.Length == 0)
        {
            return new XmlSchemaException(System.SR.Sch_EmptyAttributeValue, string.Empty);
        }
        Exception ex = DatatypeImplementation.qnameFacetsChecker.CheckLexicalFacets(ref s, this);
        if (ex == null)
        {
            XmlQualifiedName xmlQualifiedName = null;
            try
            {
                xmlQualifiedName = XmlQualifiedName.Parse(s, nsmgr, out var _);
            }
            catch (ArgumentException ex2)
            {
                ex = ex2;
                goto IL_0060;
            }
            catch (XmlException ex3)
            {
                ex = ex3;
                goto IL_0060;
            }
            ex = DatatypeImplementation.qnameFacetsChecker.CheckValueFacets(xmlQualifiedName, this);
            if (ex == null)
            {
                typedValue = xmlQualifiedName;
                return null;
            }
        }
        goto IL_0060;
        IL_0060:
        return ex;
    }
}