public ParseResult <Offset> ParsePartial(ValueCursor cursor)
{
int startIndex = cursor.Index;
// TODO: Do better than this. It's horrible, and may well be invalid
// for some cultures. Or just remove the NumberPattern from 2.0...
int longestPossible = Math.Min(maxLength, cursor.Length - cursor.Index);
for (int length = longestPossible; length >= 0; length--)
{
string candidate = cursor.Value.Substring(cursor.Index, length);
int milliseconds;
if (Int32.TryParse(candidate, NumberStyles.Integer | NumberStyles.AllowThousands,
formatInfo.NumberFormat, out milliseconds))
{
if (milliseconds < -NodaConstants.MillisecondsPerStandardDay ||
NodaConstants.MillisecondsPerStandardDay < milliseconds)
{
cursor.Move(startIndex);
return(ParseResult <Offset> .ValueOutOfRange(cursor, milliseconds));
}
cursor.Move(cursor.Index + length);
return(ParseResult <Offset> .ForValue(Offset.FromMilliseconds(milliseconds)));
}
}
cursor.Move(startIndex);
return(ParseResult <Offset> .CannotParseValue(cursor, "n"));
}
public ParseResult <Offset> Parse(string text)
{
int milliseconds;
if (Int32.TryParse(text, NumberStyles.Integer | NumberStyles.AllowThousands,
formatInfo.NumberFormat, out milliseconds))
{
if (milliseconds < -NodaConstants.MillisecondsPerStandardDay ||
NodaConstants.MillisecondsPerStandardDay < milliseconds)
{
return(ParseResult <Offset> .ValueOutOfRange(new ValueCursor(text), milliseconds));
}
return(ParseResult <Offset> .ForValue(Offset.FromMilliseconds(milliseconds)));
}
return(ParseResult <Offset> .CannotParseValue(new ValueCursor(text), "n"));
}
private ParseResult <T> BuildNumberOutOfRangeResult <T>(int startIndex)
{
Move(startIndex);
if (Current == '-')
{
MoveNext();
}
// End of string works like not finding a digit.
while (GetDigit() != -1)
{
MoveNext();
}
string badValue = Value.Substring(startIndex, Index - startIndex);
Move(startIndex);
return(ParseResult <T> .ValueOutOfRange(this, badValue));
}
