bool Csv_record_tokenizer::next()

in src/mlio/csv_record_tokenizer.cc [24:119]
76 lines of code
16 McCabe index (conditional complexity)

bool Csv_record_tokenizer::next()
{
    value_.clear();

    truncated_ = false;

    if (finished_) {
        eof_ = true;

        return false;
    }

    char chr{};

    // Start of a new field.
    Parser_state state = Parser_state::new_field;

    if (!try_get_next_char(chr)) {
        goto end_line;  // NOLINT
    }

    if (chr == delimiter_) {
        goto end_field;  // NOLINT
    }
    else if (chr == quote_char_) {
        goto in_quoted_field;  // NOLINT
    }
    else {
        push_char(chr);
        goto in_field;  // NOLINT
    }

in_field:
    state = Parser_state::in_field;

    if (!try_get_next_char(chr)) {
        goto end_line;  // NOLINT
    }

    if (chr == delimiter_) {
        goto end_field;  // NOLINT
    }
    else {
        push_char(chr);
        goto in_field;  // NOLINT
    }

in_quoted_field:
    state = Parser_state::in_quoted_field;

    if (!try_get_next_char(chr)) {
        goto end_line;  // NOLINT
    }

    if (chr == quote_char_) {
        goto quote_in_quoted_field;  // NOLINT
    }
    else {
        push_char(chr);
        goto in_quoted_field;  // NOLINT
    }

quote_in_quoted_field:
    state = Parser_state::quote_in_quoted_field;

    if (!try_get_next_char(chr)) {
        goto end_line;  // NOLINT
    }

    if (chr == delimiter_) {
        goto end_field;  // NOLINT
    }
    else if (chr == quote_char_) {
        push_char(chr);
        goto in_quoted_field;  // NOLINT
    }
    else {
        push_char(chr);
        goto in_field;  // NOLINT
    }

end_line:
    switch (state) {
    case Parser_state::new_field:
    case Parser_state::in_field:
    case Parser_state::quote_in_quoted_field:
        finished_ = true;
        break;

    case Parser_state::in_quoted_field:
        throw Corrupt_record_error{"EOF reached inside a quoted field."};
    }

end_field:
    return true;
}