Function render

src/bench/nanobench.h:1826–1877

namespace nanobench {

void render(char const* mustacheTemplate, std::vector<Result> const& results, std::ostream& out) {
    detail::fmt::StreamStateRestorer restorer(out);

    out.precision(std::numeric_limits<double>::digits10);
    auto nodes = templates::parseMustacheTemplate(&mustacheTemplate);

    for (auto const& n : nodes) {
        ANKERL_NANOBENCH_LOG("n.type=" << static_cast<int>(n.type));
        switch (n.type) {
        case templates::Node::Type::content:
            out.write(n.begin, std::distance(n.begin, n.end));
            break;

        case templates::Node::Type::inverted_section:
            throw std::runtime_error("unknown list '" + std::string(n.begin, n.end) + "'");

        case templates::Node::Type::section:
            if (n == "result") {
                const size_t nbResults = results.size();
                for (size_t i = 0; i < nbResults; ++i) {
                    generateResult(n.children, i, results, out);
                }
            } else if (n == "measurement") {
                if (results.size() != 1) {
                    throw std::runtime_error(
                        "render: can only use section 'measurement' here if there is a single result, but there are " +
                        detail::fmt::to_s(results.size()));
                }
                // when we only have a single result, we can immediately go into its measurement.
                auto const& r = results.front();
                for (size_t i = 0; i < r.size(); ++i) {
                    generateResultMeasurement(n.children, i, r, out);
                }
            } else {
                throw std::runtime_error("render: unknown section '" + std::string(n.begin, n.end) + "'");
            }
            break;

        case templates::Node::Type::tag:
            if (results.size() == 1) {
                // result & config are both supported there
                generateResultTag(n, results.front(), out);
            } else {
                // This just uses the last result's config.
                if (!generateConfigTag(n, results.back().config(), out)) {
                    throw std::runtime_error("unknown tag '" + std::string(n.begin, n.end) + "'");
                }
            }
            break;
        }
    }
}

void render(std::string const& mustacheTemplate, std::vector<Result> const& results, std::ostream& out) {
    render(mustacheTemplate.c_str(), results, out);