public override object ChangeType()

in src/dotnet-svcutil/lib/src/FrameworkFork/Microsoft.Xml/Xml/schema/XmlValueConverter.cs [3281:3357]
74 lines of code
48 McCabe index (conditional complexity)

        public override object ChangeType(object value, Type destinationType, IXmlNamespaceResolver nsResolver)
        {
            if (value == null) throw new ArgumentNullException("value");
            if (destinationType == null) throw new ArgumentNullException("destinationType");

            Type sourceType = value.GetType();

            if (destinationType == ObjectType) destinationType = DefaultClrType;
            if (destinationType == BooleanType)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value).ValueAsBoolean;
            }
            if (destinationType == DateTimeType)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value).ValueAsDateTime;
            }
            if (destinationType == DateTimeOffsetType)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value).ValueAs(DateTimeOffsetType);
            }
            if (destinationType == DecimalType)
            {
                if (sourceType == XmlAtomicValueType) return ((decimal)((XmlAtomicValue)value).ValueAs(DecimalType));
            }
            if (destinationType == DoubleType)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value).ValueAsDouble;
            }
            if (destinationType == Int32Type)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value).ValueAsInt;
            }
            if (destinationType == Int64Type)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value).ValueAsLong;
            }
            if (destinationType == SingleType)
            {
                if (sourceType == XmlAtomicValueType) return ((float)((XmlAtomicValue)value).ValueAs(SingleType));
            }
            if (destinationType == XmlAtomicValueType)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value);
                if (sourceType == BooleanType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Boolean), (bool)value));
                if (sourceType == ByteType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.UnsignedByte), value));
                if (sourceType == ByteArrayType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Base64Binary), value));
                if (sourceType == DateTimeType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.DateTime), (DateTime)value));
                if (sourceType == DateTimeOffsetType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.DateTime), (DateTimeOffset)value));
                if (sourceType == DecimalType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Decimal), value));
                if (sourceType == DoubleType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Double), (double)value));
                if (sourceType == Int16Type) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Short), value));
                if (sourceType == Int32Type) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Int), (int)value));
                if (sourceType == Int64Type) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Long), (long)value));
                if (sourceType == SByteType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Byte), value));
                if (sourceType == SingleType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Float), value));
                if (sourceType == StringType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.String), (string)value));
                if (sourceType == TimeSpanType) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Duration), value));
                if (sourceType == UInt16Type) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.UnsignedShort), value));
                if (sourceType == UInt32Type) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.UnsignedInt), value));
                if (sourceType == UInt64Type) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.UnsignedLong), value));
                if (IsDerivedFrom(sourceType, UriType)) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.AnyUri), value));
                if (IsDerivedFrom(sourceType, XmlQualifiedNameType)) return (new XmlAtomicValue(XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.QName), value, nsResolver));
            }
            if (destinationType == XPathItemType)
            {
                if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value);
                if (IsDerivedFrom(sourceType, XPathNavigatorType)) return ((XPathNavigator)value);
            }
            if (destinationType == XPathNavigatorType)
            {
                if (IsDerivedFrom(sourceType, XPathNavigatorType)) return ToNavigator((XPathNavigator)value);
            }
            if (destinationType == XPathItemType) return ((XPathItem)this.ChangeType(value, XmlAtomicValueType, nsResolver));
            if (sourceType == XmlAtomicValueType) return ((XmlAtomicValue)value).ValueAs(destinationType, nsResolver);

            return ChangeListType(value, destinationType, nsResolver);
        }