internal static string ToString(double d)
{
if (d > long.MinValue && d < long.MaxValue && Math.Abs(d % 1) <= DoubleIsIntegerTolerance)
{
// we are dealing with integer that can be cached
return(ToString((long)d));
}
return(NumberPrototype.ToNumberString(d));
}
internal static string ToString(double d)
{
if (d > long.MinValue && d < long.MaxValue && Math.Abs(d % 1) <= DoubleIsIntegerTolerance)
{
// we are dealing with integer that can be cached
return(ToString((long)d));
}
using var stringBuilder = StringBuilderPool.Rent();
// we can create smaller array as we know the format to be short
return(NumberPrototype.NumberToString(d, new DtoaBuilder(17), stringBuilder.Builder));
}
public static string ToString(EcmaValue value, int radix)
{
ThrowIfArgumentNotBigInt(value);
if (radix < 2 || radix > 36)
{
throw new EcmaRangeErrorException(InternalString.Error.InvalidToStringRadix);
}
if (EcmaValue.GetNumberCoercion(value) == EcmaNumberType.BigInt64)
{
return(NumberPrototype.GetString(value.ToInt64(), radix));
}
BigInteger bigInt = ToBigInteger(value);
if (radix == 10)
{
return(bigInt.ToString());
}
if (radix == 16)
{
return(bigInt.ToString("x"));
}
int digits = biggestLong[radix - 2];
bool isMinus = bigInt < 0;
if (isMinus)
{
bigInt = -bigInt;
}
BigInteger divisor = BigInteger.Pow(radix, digits);
StringBuilder sb = new StringBuilder();
while (bigInt > divisor)
{
bigInt = BigInteger.DivRem(bigInt, divisor, out BigInteger remainder);
string s = NumberPrototype.GetString((long)remainder, radix);
sb.Insert(0, s);
if (s.Length < digits)
{
sb.Insert(0, "0", digits - s.Length);
}
}
sb.Insert(0, NumberPrototype.GetString((long)bigInt, radix));
if (isMinus)
{
sb.Insert(0, '-');
}
return(sb.ToString());
}
/// <summary>
/// http://www.ecma-international.org/ecma-262/5.1/#sec-9.8
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static string ToString(JsValue o)
{
if (o == null)
{
return(null);
}
if (o.IsObject())
{
var p = o.AsObject() as IPrimitiveInstance;
if (p != null)
{
o = p.PrimitiveValue;
}
}
if (o.IsString())
{
return(o.AsString());
}
if (o == Undefined.Instance)
{
return(Undefined.Text);
}
if (o == Null.Instance)
{
return(Null.Text);
}
if (o.IsBoolean())
{
return(o.AsBoolean() ? "true" : "false");
}
if (o.IsNumber())
{
return(NumberPrototype.ToNumberString(o.AsNumber()));
}
return(ToString(ToPrimitive(o, Types.String)));
}
public void ShouldConvertNumbersToDifferentBase(string expected, long number, int radix)
{
var result = NumberPrototype.ToBase(number, radix);
Assert.Equal(expected, result);
}
public void ShouldComputeFractionInBase()
{
Assert.Equal("011", NumberPrototype.ToFractionBase(0.375, 2));
Assert.Equal("14141414141414141414141414141414141414141414141414", NumberPrototype.ToFractionBase(0.375, 5));
}
