internal static bool HasImplicitNumericConversion(Type/*!*/ fromType, Type/*!*/ toType) {
NumericTypeCode toCode = GetNumericTypeCode(toType);
NumericTypeCode fromCode = GetNumericTypeCode(fromType);
return toCode != NumericTypeCode.Invalid
&& fromCode != NumericTypeCode.Invalid
&& (ExplicitConversions[(int)fromCode] & (1 << (int)toCode)) == 0;
}
private static NumericTypeCode[] CreateTypeCodeMapping() {
var result = new NumericTypeCode[20];
result[(int)TypeCode.SByte] = NumericTypeCode.SByte;
result[(int)TypeCode.Byte] = NumericTypeCode.Byte;
result[(int)TypeCode.Int16] = NumericTypeCode.Int16;
result[(int)TypeCode.UInt16] = NumericTypeCode.UInt16;
result[(int)TypeCode.Int32] = NumericTypeCode.Int32;
result[(int)TypeCode.UInt32] = NumericTypeCode.UInt32;
result[(int)TypeCode.Int64] = NumericTypeCode.Int64;
result[(int)TypeCode.UInt64] = NumericTypeCode.UInt64;
result[(int)TypeCode.Single] = NumericTypeCode.Single;
result[(int)TypeCode.Double] = NumericTypeCode.Double;
result[(int)TypeCode.Decimal] = NumericTypeCode.Decimal;
return result;
}
private static NumericTypeCode[] CreateTypeCodeMapping() {
var result = new NumericTypeCode[20];
result[(int)TypeCode.SByte] = NumericTypeCode.SByte;
result[(int)TypeCode.Byte] = NumericTypeCode.Byte;
result[(int)TypeCode.Int16] = NumericTypeCode.Int16;
result[(int)TypeCode.UInt16] = NumericTypeCode.UInt16;
result[(int)TypeCode.Int32] = NumericTypeCode.Int32;
result[(int)TypeCode.UInt32] = NumericTypeCode.UInt32;
result[(int)TypeCode.Int64] = NumericTypeCode.Int64;
result[(int)TypeCode.UInt64] = NumericTypeCode.UInt64;
result[(int)TypeCode.Single] = NumericTypeCode.Single;
result[(int)TypeCode.Double] = NumericTypeCode.Double;
result[(int)TypeCode.Decimal] = NumericTypeCode.Decimal;
return result;
}