grading_session.hpp

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#pragma once
 
// TODO: Rename this file
 
#include <asmgrader/common/extra_formatters.hpp>
#include <asmgrader/exceptions.hpp>
#include <asmgrader/version.hpp>
 
#include <boost/config/workaround.hpp>
#include <boost/preprocessor/stringize.hpp>
#include <fmt/base.h>
#include <gsl/util>
#include <range/v3/algorithm/all_of.hpp>
#include <range/v3/algorithm/count_if.hpp>
#include <range/v3/algorithm/fold_left.hpp>
#include <range/v3/view/transform.hpp>
 
#include <chrono>
#include <filesystem>
#include <functional>
#include <optional>
#include <source_location>
#include <string>
#include <string_view>
#include <vector>
 
namespace asmgrader {
 
struct CompilerInfo
{
    enum { Unknown, GCC, Clang } kind;
 
    int major_version;
    int minor_version;
    int patch_version;
};
 
static consteval CompilerInfo get_compiler_info() {
    CompilerInfo compiler_info{};
 
#if defined(__GNUC__) && !defined(__clang__)
    compiler_info.kind = CompilerInfo::GCC;
    compiler_info.major_version = __GNUC__;
    compiler_info.minor_version = __GNUC_MINOR__;
    compiler_info.patch_version = __GNUC_PATCHLEVEL__;
#elif defined(__clang__)
    compiler_info.kind = CompilerInfo::Clang;
    compiler_info.major_version = __clang_major__;
    compiler_info.minor_version = __clang_minor__;
    compiler_info.patch_version = __clang_patchlevel__;
#endif
 
    return compiler_info;
}
 
struct RunMetadata
{
    int version = get_version();
    std::string_view version_string = ASMGRADER_VERSION_STRING;
    std::string_view git_hash = BOOST_PP_STRINGIZE(ASMGRADER_VERSION_GIT_HASH);
 
    std::chrono::time_point<std::chrono::system_clock> start_time = std::chrono::system_clock::now();
 
    decltype(__cplusplus) cpp_standard = __cplusplus;
 
    CompilerInfo compiler_info = get_compiler_info();
};
 
struct RequirementResult
{
    bool passed;
    std::string msg;
 
    struct DebugInfo
    {
        std::string_view msg;     // stringified condition
        std::source_location loc; // requirement execution point
 
        static constexpr std::string_view DEFAULT_MSG = "<unknown>";
 
        explicit DebugInfo(std::string_view message = DEFAULT_MSG,
                           std::source_location location = std::source_location::current())
            : msg{message}
            , loc{location} {}
    };
 
    DebugInfo debug_info;
};
 
struct TestResult
{
    std::string name;
    std::vector<RequirementResult> requirement_results;
 
    int num_passed{};
    int num_total{};
    int weight{};
 
    std::optional<ContextInternalError> error;
 
    constexpr bool passed() const noexcept { return !error && num_failed() == 0; }
 
    constexpr int num_failed() const noexcept { return num_total - num_passed; }
 
    constexpr int total_weighted() const noexcept { return num_total * weight; }
 
    constexpr int passed_weighted() const noexcept { return num_passed * weight; }
};
 
struct AssignmentResult
{
    std::string name;
    std::vector<TestResult> test_results;
    int num_requirements_total{};
 
    double get_percentage() const noexcept {
        using ranges::fold_left_first, ranges::views::transform;
 
        auto total_weight = ranges::fold_left(test_results | transform(&TestResult::total_weighted), 0, std::plus{});
 
        auto passed_weight = ranges::fold_left(test_results | transform(&TestResult::passed_weighted), 0, std::plus{});
 
        if (total_weight == 0) {
            return 0.0;
        }
 
        return static_cast<double>(passed_weight) / total_weight * 100;
    }
 
    bool all_passed() const noexcept { return ranges::all_of(test_results, &TestResult::passed); }
 
    int num_tests_passed() const noexcept {
        return gsl::narrow_cast<int>(ranges::count_if(test_results, &TestResult::passed));
    }
 
    int num_tests_failed() const noexcept { return gsl::narrow_cast<int>(test_results.size()) - num_tests_passed(); }
 
    int num_requirements_failed() const noexcept {
        auto failed_view = test_results | ranges::views::transform(&TestResult::num_failed);
        return ranges::fold_left(failed_view, 0, std::plus<>{});
    }
 
    int num_requirements_passed() const noexcept { return num_requirements_total - num_requirements_failed(); }
};
 
// PROFESSOR_VERSION only
 
struct StudentInfo
{
    std::string first_name; // if names_known = false, this holds the inferred name for now
    std::string last_name;
    bool names_known; // whether the names are known (i.e., obtained from a database) or inferred based on filename
 
    std::optional<std::filesystem::path> assignment_path;
 
    // the regex matcher, with fields substituted; used to provide a more helpful diagnostic
    std::string subst_regex_string;
 
    // TODO: ids for students with the same names?
};
 
struct StudentResult
{
    StudentInfo info;
    AssignmentResult result;
};
 
struct MultiStudentResult
{
    std::vector<StudentResult> results;
};
 
} // namespace asmgrader
 
template <>
struct fmt::formatter<::asmgrader::RequirementResult::DebugInfo> : ::asmgrader::DebugFormatter
{
    constexpr auto format(const ::asmgrader::RequirementResult::DebugInfo& from, fmt::format_context& ctx) const {
        // Explicitly called "DebugInfo", so fmt to an empty string if not debug mode
        if (!is_debug_format) {
            return ctx.out();
        }
 
        return fmt::format_to(ctx.out(), "{{{} at {}}}", from.msg, from.loc);
    }
};