Class Filepointer

lib/checkio.cpp:107–117

namespace {
    struct Filepointer {
        OpenMode mode;
        nonneg int mode_indent{};
        enum class Operation : std::uint8_t {NONE, UNIMPORTANT, READ, WRITE, POSITIONING, OPEN, CLOSE, UNKNOWN_OP} lastOperation = Operation::NONE;
        nonneg int op_indent{};
        enum class AppendMode : std::uint8_t { UNKNOWN_AM, APPEND, APPEND_EX };
        AppendMode append_mode = AppendMode::UNKNOWN_AM;
        std::string filename;
        explicit Filepointer(OpenMode mode_ = OpenMode::UNKNOWN_OM)
            : mode(mode_) {}
    };

    const std::unordered_set<std::string> whitelist = { "clearerr", "feof", "ferror", "fgetpos", "ftell", "setbuf", "setvbuf", "ungetc", "ungetwc" };
}