Method getPreviousWS

src/org/antlr/codebuff/Trainer.java:387–391

(CommonTokenStream tokens, int i)

	// if we have non-ws tokens like comments, we only count ws not in comments
	public static List<Token> getPreviousWS(CommonTokenStream tokens, int i) {
		List<Token> hiddenTokensToLeft = tokens.getHiddenTokensToLeft(i);
		if ( hiddenTokensToLeft==null ) return null;
		return filter(hiddenTokensToLeft, t -> t.getText().matches("\\s+"));
	}

	public static boolean hasCommentToken(List<Token> hiddenTokensToLeft) {
		boolean hasComment = false;