Method FilterNode

src/include/minja/minja.hpp:1110–1111

public:
    FilterNode(const Location & loc, std::shared_ptr<Expression> && f, std::shared_ptr<TemplateNode> && b)
        : TemplateNode(loc), filter(std::move(f)), body(std::move(b)) {}

    void do_render(std::ostringstream & out, const std::shared_ptr<Context> & context) const override {
        if (!filter) throw std::runtime_error("FilterNode.filter is null");