private static bool ProcessTerminal_CT(ref NumberSpanRawInfo raw, NumberSpanStandardStyles style, ref NumberSpanResult result)
{
if (raw._sepCount != 3 || raw._numCount != 2 || (style & NumberSpanStandardStyles.RequireFull) != NumberSpanStandardStyles.None)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
bool invariant = (style & NumberSpanStandardStyles.Invariant) != NumberSpanStandardStyles.None;
bool localized = (style & NumberSpanStandardStyles.Localized) != NumberSpanStandardStyles.None;
bool positive = false;
bool match = false;
if (invariant)
{
if (raw.FullCTMatch(raw.PositiveInvariant))
{
match = true;
positive = true;
}
if (!match && raw.FullCTMatch(raw.NegativeInvariant))
{
match = true;
positive = false;
}
}
if (localized)
{
if (!match && raw.FullCTMatch(raw.PositiveLocalized))
{
match = true;
positive = true;
}
if (!match && raw.FullCTMatch(raw.NegativeLocalized))
{
match = true;
positive = false;
}
}
long num;
if (match)
{
if (!TryNumberToTicks(positive, raw._numbers[0], raw._numbers[1], _zero, out num))
{
result.SetFailure(ParseFailureKind.Overflow, "Overflow_NumberSpanElementTooLarge");
return false;
}
if (!positive)
{
num = -num;
if (num > 0)
{
result.SetFailure(ParseFailureKind.Overflow, "Overflow_NumberSpanElementTooLarge");
return false;
}
}
result._parsedNumberSpan._ticks = num;
return true;
}
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
private static bool ProcessTerminalState(ref NumberSpanRawInfo raw, NumberSpanStandardStyles style, ref NumberSpanResult result)
{
if (raw._lastSeenTTT == TTT.Num)
{
var tok = new NumberSpanToken
{
_ttt = TTT.Sep,
_sep = string.Empty
};
if (!raw.ProcessToken(ref tok, ref result))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
}
switch (raw._numCount)
{
case 1: return ProcessTerminal_C(ref raw, style, ref result);
case 2: return ProcessTerminal_CT(ref raw, style, ref result);
case 3: return ProcessTerminal_FULL(ref raw, style, ref result);
}
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
private static bool TryParseNumberSpan(string input, NumberSpanStandardStyles style, IFormatProvider formatProvider, ref NumberSpanResult result)
{
if (input == null)
{
result.SetFailure(ParseFailureKind.ArgumentNull, "ArgumentNull_String", null, "input");
return false;
}
input = input.Trim();
if (input == string.Empty)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
var tokenizer = new NumberSpanTokenizer();
tokenizer.Init(input);
var raw = new NumberSpanRawInfo();
raw.Init(); //DateTimeFormatInfo.GetInstance(formatProvider));
for (var token = tokenizer.GetNextToken(); token._ttt != TTT.End; token = tokenizer.GetNextToken())
if (!raw.ProcessToken(ref token, ref result))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
if (!tokenizer.EOL)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
if (!ProcessTerminalState(ref raw, style, ref result))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadNumberSpan");
return false;
}
return true;
}
