charSeparatedListOf example

/** * Parses a let or const declaration * * @return Node\VariableDeclaration|null */
    protected function parseLexicalDeclaration()
    {
        $state = $this->scanner->getState();
        if ($token = $this->scanner->consumeOneOf(array("let", "const"))) {
            
            $declarations = $this->charSeparatedListOf(
                "parseVariableDeclaration"
            );
            
            if ($declarations) {
                $this->assertEndOfStatement();
                $node = $this->createNode("VariableDeclaration", $token);
                $node->setKind($token->value);
                $node->setDeclarations($declarations);
                return $this->completeNode($node);
            }