Phan\AST\UnionTypeVisitor::visitArray PHP Method

    public function visitArray(Node $node) : UnionType
    {
        if (!empty($node->children) && $node->children[0] instanceof Node && $node->children[0]->kind == \ast\AST_ARRAY_ELEM) {
            $element_types = [];
            // Check the first 5 (completely arbitrary) elements
            // and assume the rest are the same type
            for ($i = 0; $i < 5; $i++) {
                // Check to see if we're out of elements
                if (empty($node->children[$i])) {
                    break;
                }
                if ($node->children[$i]->children['value'] instanceof Node) {
                    $element_types[] = UnionType::fromNode($this->context, $this->code_base, $node->children[$i]->children['value'], $this->should_catch_issue_exception);
                } else {
                    $element_types[] = Type::fromObject($node->children[$i]->children['value'])->asUnionType();
                }
            }
            $element_types = array_values(array_unique($element_types));
            if (count($element_types) == 1) {
                return $element_types[0]->asGenericArrayTypes();
            }
        }
        return ArrayType::instance()->asUnionType();
    }