public void Reset(char[] data, int startIndex, int length)
{
fData = data;
fLength = length;
fCurrentToken = GEDCOMToken.Unknown;
fPos = startIndex;
fValueReset = false;
}
public bool RequireToken(GEDCOMToken tokenKind)
{
return(fCurrentToken == tokenKind);
}
public GEDCOMToken Next()
{
while (true)
{
char ch = (fPos >= fLength) ? EOL : fData[fPos];
char ltr = (char)(ch | ' ');
if ((ltr >= 'a' && ltr <= 'z') || ch == '_')
{
fSavePos = fPos;
fPos++;
while (true)
{
ch = (fPos >= fLength) ? EOL : fData[fPos];
ltr = (char)(ch | ' ');
if ((ltr >= 'a' && ltr <= 'z') || (ch >= '0' && ch <= '9') || ch == '_')
{
fPos++;
}
else
{
break;
}
}
fTokenEnd = fPos;
fValueReset = true;
fCurrentToken = GEDCOMToken.Word;
return(fCurrentToken);
}
if (ch >= '0' && ch <= '9')
{
fSavePos = fPos;
fPos++;
fIntValue = ((int)ch - 48);
while (true)
{
ch = (fPos >= fLength) ? EOL : fData[fPos];
if (ch >= '0' && ch <= '9')
{
fPos++;
fIntValue = (fIntValue * 10 + ((int)ch - 48));
}
else
{
break;
}
}
fTokenEnd = fPos;
fValueReset = true;
fCurrentToken = GEDCOMToken.Number;
return(fCurrentToken);
}
if (ch == ' ' || ch == '\t')
{
if (fIgnoreWhitespace)
{
fPos++;
continue;
}
fSavePos = fPos;
fPos++;
while (true)
{
ch = (fPos >= fLength) ? EOL : fData[fPos];
if (ch == ' ' || ch == '\t')
{
fPos++;
}
else
{
break;
}
}
fTokenEnd = fPos;
fValueReset = true;
fCurrentToken = GEDCOMToken.Whitespace;
return(fCurrentToken);
}
if (ch == '@')
{
fSavePos = ++fPos;
while (true)
{
ch = (fPos >= fLength) ? EOL : fData[fPos];
fPos++;
if (ch == '@')
{
fTokenEnd = fPos - 1;
break;
}
}
fValueReset = true;
fCurrentToken = GEDCOMToken.XRef;
return(fCurrentToken);
}
if (ch == EOL)
{
fValueReset = true;
fCurrentToken = GEDCOMToken.EOL;
return(fCurrentToken);
}
else
{
fSavePos = fPos;
fPos++;
fTokenEnd = fPos;
fValueReset = true;
fCurrentToken = GEDCOMToken.Symbol;
return(fCurrentToken);
}
}
}
