// Read from stream a valid PMML token
public String token() {
int b = get();
if (!Character.isJavaIdentifierStart(b))
throw new ParseException("Expected token start but found '" + (char) b + "'");
StringBuilder sb = new StringBuilder();
sb.append((char) b);
b = get();
while (Character.isJavaIdentifierPart(b) || b == ':') {
sb.append((char) b);
b = get();
}
push(b);
return sb.toString();
}
// Read from stream, skipping whitespace
public PMMLParser skipWS() {
int c;
while (Character.isWhitespace(c = get())) ;
push(c);
return this;
}