private static Type GetWidestType(Type Type1, Type Type2)
{
if ((Type1 != null) && (Type2 != null))
{
if (!Type1.IsEnum && !Type2.IsEnum)
{
TypeCode typeCode = Symbols.GetTypeCode(Type1);
TypeCode code2 = Symbols.GetTypeCode(Type2);
if (Symbols.IsNumericType(typeCode) && Symbols.IsNumericType(code2))
{
return(Symbols.MapTypeCodeToType(ConversionResolution.ForLoopWidestTypeCode[(int)typeCode][(int)code2]));
}
}
Symbols.Method operatorMethod = null;
switch (ConversionResolution.ClassifyConversion(Type2, Type1, ref operatorMethod))
{
case ConversionResolution.ConversionClass.Identity:
case ConversionResolution.ConversionClass.Widening:
return(Type2);
}
operatorMethod = null;
if (ConversionResolution.ClassifyConversion(Type1, Type2, ref operatorMethod) == ConversionResolution.ConversionClass.Widening)
{
return(Type1);
}
}
return(null);
}
