/// <summary>
/// Checks if a constant can be converted from one function data type to another.
/// </summary>
/// <param name="newValue">Value to convert.</param>
/// <param name="oldDataType">Old data type.</param>
protected virtual void CheckConstantFunction(Object newValue, FunctionDataType oldDataType)
{
if (!Equals(newValue.TypeSlim, oldDataType.UnderlyingType.ToTypeSlim())) // NB: TypeSlim implements IEquatable
{
throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, "Cannot convert value '{0}' from function data type '{1}' to '{2}'.", newValue.Value, oldDataType, newValue.TypeSlim));
}
}
/// <summary>
/// Converts a constant from one function data type to another.
/// </summary>
/// <param name="originalValue">Original value to convert.</param>
/// <param name="oldDataType">Old data type.</param>
/// <param name="newDataType">New data type.</param>
/// <returns>Converted constant.</returns>
protected virtual object ConvertConstantFunction(object originalValue, FunctionDataType oldDataType, FunctionDataType newDataType)
{
if (oldDataType.UnderlyingType == newDataType.UnderlyingType)
{
return(originalValue);
}
throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, "Cannot convert value '{0}' from function data type '{1}' to '{2}'.", originalValue, oldDataType, newDataType));
}
static DataTypeDescriptor()
{
DnsName = new DnsNameDataType();
IpAddress = new IpAddress();
Bag = new Bag();
Time = new Time();
String = new StringDataType();
Rfc822Name = new Rfc822Name();
X500Name = new X500Name();
Double = new DoubleDataType();
YearMonthDuration = new YearMonthDuration();
DaytimeDuration = new DaytimeDuration();
DateTime = new DateTime();
Date = new DateDataType();
Integer = new IntegerDataType();
Boolean = new BooleanDataType();
HexBinary = new HexBinary();
Base64Binary = new Base64Binary();
AnyUri = new AnyUri();
Function = new FunctionDataType();
}
static DataTypeDescriptor()
{
DnsName = new DnsNameDataType();
IpAddress = new IpAddress();
Bag = new Bag();
Time = new Time();
String = new StringDataType();
Rfc822Name = new Rfc822Name();
X500Name = new X500Name();
Double = new DoubleDataType();
YearMonthDuration = new YearMonthDuration();
DaytimeDuration = new DaytimeDuration();
DateTime = new DateTime();
Date = new DateDataType();
Integer = new IntegerDataType();
Boolean = new BooleanDataType();
HexBinary = new HexBinary();
Base64Binary = new Base64Binary();
AnyUri = new AnyUri();
Function = new FunctionDataType();
}
protected override Type MakeFunction(FunctionDataType type, ReadOnlyCollection <Type> parameterTypes, Type returnType)
{
return(Expression.GetFuncType(parameterTypes.Concat(new[] { returnType }).ToArray())); // don't care about actions here for testing
}
protected override DataType VisitFunction(FunctionDataType type)
{
return(DataType.FromType(typeof(int)));
}
protected override LambdaExpression MakeFunction(FunctionDataType type, ReadOnlyCollection <LambdaExpression> parameterTypes, LambdaExpression returnType)
{
throw new NotSupportedException("Arbitrary functions cannot be serialized.");
}
