public FormattedString Format(EcmaValue value)
{
EnsureInitialized();
NumberFormatInfo formatter = formatProvider.FormatProvider;
value = value.ToNumber();
if (value.IsNaN || !value.IsFinite)
{
string str = value.ToDouble().ToString(formatter);
return(new FormattedString(new[] { new FormattedPart(value.IsNaN ? FormattedPartType.NaN : FormattedPartType.Infinity, str) }));
}
double doubleValue = value.ToDouble();
if (this.SignDisplay == SignDisplayFormat.Never)
{
doubleValue = Math.Abs(doubleValue);
}
if (this.Style == NumberStyle.Percent)
{
doubleValue *= 100;
}
PluralCategories pluralCount = pluralRules.Match(doubleValue);
NumberFormatPattern notationFormats = this.Notation == NumberNotation.Compact ? GetCompactNotationPattern(doubleValue, pluralCount, out doubleValue) : this.notationFormats;
NumberFormatPattern styleFormats = this.styleFormats.Count == 1 ? this.styleFormats[PluralCategories.Other] : this.styleFormats[pluralCount];
FormattedString notationFormat = null;
FormattedString styleFormat = null;
switch (doubleValue.CompareTo(0))
{
case -1:
notationFormat = notationFormats.NegativePattern;
styleFormat = styleFormats.NegativePattern;
break;
case 0:
notationFormat = notationFormats.ZeroPattern;
styleFormat = styleFormats.ZeroPattern;
break;
case 1:
notationFormat = notationFormats.PositivePattern;
styleFormat = styleFormats.PositivePattern;
break;
}
if (this.Digits.RoundingType == RoundingType.SignificantDigits)
{
doubleValue = RoundToSignificantDigits(doubleValue, this.Digits.MaximumSignificantDigits);
}
// format double value with corresponding notation (scienific, compact, ...)
List <FormattedPart> numParts = new List <FormattedPart>(notationFormat);
List <FormattedPart> subParts = new List <FormattedPart>();
int index = numParts.FindIndex(v => v.Type == FormattedPartType.Placeholder);
string formatted = doubleValue.ToString(numParts[index].Value, formatter);
FormattedPartType integerType = FormattedPartType.Integer;
RoundingType roundingType = this.Digits.RoundingType;
int maxDigits = roundingType == RoundingType.SignificantDigits ? this.Digits.MaximumSignificantDigits : -1;
int numOfDigits = 0;
foreach (Match m in Regex.Matches(formatted, "([0-9]+)|."))
{
FormattedPartType type = FormattedPartType.Literal;
string str = m.Value;
if (m.Groups[1].Success)
{
type = integerType;
if (roundingType == RoundingType.SignificantDigits)
{
if (type != FormattedPartType.ExponentInteger)
{
numOfDigits += numOfDigits == 0 ? str.TrimStart('0').Length : str.Length;
}
if (type == FormattedPartType.Fraction && numOfDigits > maxDigits)
{
str = str.Substring(0, str.Length - numOfDigits + maxDigits);
}
}
}
else if (symbolType.TryGetValue(str, out type))
{
if (type == FormattedPartType.Decimal)
{
integerType = FormattedPartType.Fraction;
}
else if (type == FormattedPartType.ExponentSeparator)
{
integerType = FormattedPartType.ExponentInteger;
}
}
subParts.Add(new FormattedPart(type, str));
}
numParts.RemoveAt(index);
numParts.InsertRange(index, subParts);
// format as curreny or unit with the formatted number
List <FormattedPart> finalParts = new List <FormattedPart>(styleFormat);
index = finalParts.FindIndex(v => v.Type == FormattedPartType.Placeholder);
finalParts.RemoveAt(index);
finalParts.InsertRange(index, numParts);
return(new FormattedString(finalParts));
}
public PluralCategories ResolveCategory(double number)
{
EnsureInitialized();
return(resolver.Match(number));
}