helper.discardHelper(grammar);
}
protected MutableTokenDefProvider createLexerTokensProvider(final String lexerBaseFileName, final KeywordHelper helper, final Charset encoding) {
MutableTokenDefProvider provider = new MutableTokenDefProvider(helper, encoding);
provider.setAntlrTokenFileProvider(new IAntlrTokenFileProvider() {
@Override
public InputStream getAntlrTokenFile() {
try {
return new FileInputStream(lexerBaseFileName + ".tokens");
}