oxen-core/src/common/expect.cpp

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#include "expect.h"

#include <string>

#include "common/fs.h"

namespace detail {
namespace {
    std::string generate_error(const char* msg, const char* file, unsigned line) {
        std::string error_msg{};
        if (msg) {
            error_msg.append(msg);
            if (file)
                error_msg.append(" (");
        }
        if (file) {
            error_msg.append("thrown at ");

            // remove path, get just filename + extension
            error_msg.append(fs::path(file).filename().string());

            error_msg.push_back(':');
            error_msg.append(std::to_string(line));
        }
        if (msg && file)
            error_msg.push_back(')');
        return error_msg;
    }
}  // namespace

void expect::throw_(std::error_code ec, const char* msg, const char* file, unsigned line) {
    if (msg || file)
        throw std::system_error{ec, generate_error(msg, file, line)};
    throw std::system_error{ec};
}
}  // namespace detail