Avoid too many return statements within this method.

Open

                return new FunctionNode($token->getValue(), null);

Avoid too many return statements within this method.

Open

                return new ExpressionNode(null, $token->getValue(), null);

Avoid too many return statements within this method.

Open

        return false;

Avoid too many return statements within this method.

Open

            return new NumberNode($leftOperand->getValue() * $rightOperand->getValue());

Avoid too many return statements within this method.

Open

            return new RationalNode($p, $q);

Avoid too many return statements within this method.

Open

                return new SubExpressionNode($token->getValue());

Avoid too many return statements within this method.

Open

                return new PostfixOperatorNode($token->getValue());

Avoid too many return statements within this method.

Open

                return null;

Avoid too many return statements within this method.

Open

                    return 3 + $left->complexity() + (($right === null) ? 0 : $right->complexity());

Avoid too many return statements within this method.

Open

            return $otherRight=== null && $thisLeft->compareTo($otherLeft);

Avoid too many return statements within this method.

Open

                return new SubExpressionNode($token->getValue());

Avoid too many return statements within this method.

Open

            return true;

Function visitFactorialNode has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    private function visitFactorialNode(FunctionNode $node)
    {
        $functionName = $node->getName();
        $op = $node->getOperand();
        $operand = $op->accept($this);

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Function handleSubExpression has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    protected function handleSubExpression()
    {
        // Flag, checking for mismatching parentheses
        $clean = false;

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Function visitExpressionNode has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    public function visitExpressionNode(ExpressionNode $node)
    {
        $operator = $node->getOperator();

        $leftValue = $node->getLeft()->accept($this);

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Function visitFunctionNode has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    public function visitFunctionNode(FunctionNode $node)
    {
        $inner = $node->getOperand()->accept($this);

        switch ($node->getName()) {

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Function powi has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    private static function powi($z, $n) {
        if ($n < 0) return static::div(1,static::powi($z, -$n));

        if ($n == 0) return new Complex(1,0);

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Function compareTo has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    public function compareTo($other)
    {
        if ($other === null) {
            return false;
        }

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