Method and

src/main/java/org/jsoup/select/QueryParser.java:189–196

Merge two evals into an And.

(@Nullable Evaluator left, Evaluator right)

    /** Merge two evals into an And. */
    static Evaluator and(@Nullable Evaluator left, Evaluator right) {
        if (left == null) return right;
        if (left instanceof CombiningEvaluator.And) {
            ((CombiningEvaluator.And) left).add(right);
            return left;
        }
        return new CombiningEvaluator.And(left, right);
    }

    private Evaluator parsePseudoSelector() {
        final String pseudo = tq.consumeCssIdentifier();