Method CallNode

src/include/minja/minja.hpp:1641–1642

public:
    CallNode(const Location & loc, std::shared_ptr<Expression> && e, std::shared_ptr<TemplateNode> && b)
        : TemplateNode(loc), expr(std::move(e)), body(std::move(b)) {}

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