public Colorizer(LanguageService languageService, IVsTextLines buffer) {
this.languageService = languageService;
this.cachedLine = -1;
string fname = null;
uint formatIndex = 0;
IPersistFileFormat pff = (IPersistFileFormat)buffer;
pff.GetCurFile(out fname, out formatIndex);
this.scanner = languageService.GetScanner(fname);
this.buffer = buffer;
}
