internal string ToJSONString()
{
switch (this.kind)
{
case Kind.Double: {
var f = (double)this.value;
if (Double.IsNegativeInfinity(f) ||
Double.IsPositiveInfinity(f) ||
Double.IsNaN(f))
{
return("null");
}
string dblString = CBORUtilities.DoubleToString(f);
return(CBORUtilities.TrimDotZero(dblString));
}
case Kind.Integer: {
var longItem = (long)this.value;
return(CBORUtilities.LongToString(longItem));
}
case Kind.EInteger: {
return(((EInteger)this.value).ToString());
}
case Kind.EDecimal: {
var dec = (EDecimal)this.value;
if (dec.IsInfinity() || dec.IsNaN())
{
return("null");
}
else
{
return(dec.ToString());
}
}
case Kind.EFloat: {
var flo = (EFloat)this.value;
if (flo.IsInfinity() || flo.IsNaN())
{
return("null");
}
if (flo.IsFinite &&
flo.Exponent.Abs().CompareTo((EInteger)2500) > 0)
{
// Too inefficient to convert to a decimal number
// from a bigfloat with a very high exponent,
// so convert to double instead
double f = flo.ToDouble();
if (Double.IsNegativeInfinity(f) ||
Double.IsPositiveInfinity(f) ||
Double.IsNaN(f))
{
return("null");
}
string dblString = CBORUtilities.DoubleToString(f);
return(CBORUtilities.TrimDotZero(dblString));
}
return(flo.ToString());
}
case Kind.ERational: {
var dec = (ERational)this.value;
EDecimal f = dec.ToEDecimalExactIfPossible(
EContext.Decimal128.WithUnlimitedExponents());
if (!f.IsFinite)
{
return("null");
}
else
{
return(f.ToString());
}
}
default: throw new InvalidOperationException();
}
}
