question: protected boolean parseLineInternal ( ) { int i = 0 ; for ( ; tokenizer . valid ( ) ; tokenizer . advance ( ) , i ++ ) { if ( ! isLabelColumn ( i ) && ! tokenizer . isQuoted ( ) ) { try { attributes . add ( tokenizer . getDouble ( ) ) ; continue ; } catch ( NumberFormatException e ) { } } String lbl = tokenizer . getStrippedSubstring ( ) ; if ( lbl . length ( ) > 0 ) { haslabels = true ; lbl = unique . addOrGet ( lbl ) ; labels . add ( lbl ) ; } } if ( curvec == null && attributes . size == 0 ) { columnnames = new ArrayList < > ( labels ) ; haslabels = false ; curvec = null ; curlbl = null ; labels . clear ( ) ; return false ; } curvec = createVector ( ) ; curlbl = LabelList . make ( labels ) ; attributes . clear ( ) ; labels . clear ( ) ; return true ; }
target:  Internal method for parsing a single line. Used by both line based parsing as well as block parsing. This saves the building of meta data for each line.