internal static ConversionClass ClassifyPredefinedConversion(Type TargetType, Type SourceType)
{
if (TargetType == SourceType)
{
return(ConversionClass.Identity);
}
TypeCode typeCode = Symbols.GetTypeCode(SourceType);
TypeCode code2 = Symbols.GetTypeCode(TargetType);
if (Symbols.IsIntrinsicType(typeCode) && Symbols.IsIntrinsicType(code2))
{
if ((Symbols.IsEnum(TargetType) && Symbols.IsIntegralType(typeCode)) && Symbols.IsIntegralType(code2))
{
return(ConversionClass.Narrowing);
}
if ((typeCode == code2) && Symbols.IsEnum(SourceType))
{
return(ConversionClass.Widening);
}
return(ClassifyIntrinsicConversion(code2, typeCode));
}
if (Symbols.IsCharArrayRankOne(SourceType) && Symbols.IsStringType(TargetType))
{
return(ConversionClass.Widening);
}
if (Symbols.IsCharArrayRankOne(TargetType) && Symbols.IsStringType(SourceType))
{
return(ConversionClass.Narrowing);
}
return(ClassifyPredefinedCLRConversion(TargetType, SourceType));
}