🚀 go-pugleaf

Mam obiekt klasy source_file:

class source_file {
private:
    std::wstring source_file_path;
    int current_source_line_no;
    bool inside_php, start_inside_php;
    int num_source_lines, too_long_line_number;
    std::vector<std::string> source_lines;
    std::vector<std::pair<int, std::string>> tokenized_lines;
    std::vector<std::pair<int, std::string>>::const_iterator current_tokenized_lines_iter;
    size_t max_line_len, too_long_line_len, max_found_line_len;
public:
    source_file(size_t max_line_length = 0) { // 0 means 'no limit'
        max_line_len = max_line_length;
        too_long_line_len = 0;
        max_found_line_len = 0;
        current_source_line_no = -1;
        num_source_lines = 0;
        current_tokenized_lines_iter = tokenized_lines.end();
        too_long_line_number = 0;
        inside_php = start_inside_php = false;
    }
    size_t get_max_found_line_length() const {
        return max_found_line_len;
    }
    size_t get_too_long_line_length() const {
        return too_long_line_len;
    }
    int get_too_long_line_number() const {
        return too_long_line_number;
    }
    bool open(std::wstring in_file_path);
    void close() {
        source_lines.clear();
        tokenized_lines.clear();
        too_long_line_len = 0;
        max_found_line_len = 0;
        num_source_lines = 0;
        current_source_line_no = -1;
    }
    void rewind() { // go to begin of file
        current_source_line_no = -1;
        current_tokenized_lines_iter = tokenized_lines.begin();
        inside_php = start_inside_php = false;
    }
    bool get_next_line(std::string &line);
    bool change_current_line(std::string line, bool ltrim_line);
    void ltrim_current_line();
    void get_contents(std::vector<std::string> &contents);
    bool change_file_with_contents(const std::vector<std::string> &contents, unsigned int defines_line_num = 0, unsigned int defines_num_lines = 0);
    void remove_magic_str();    // obejście dla problemu pozostających magic_str
    void write(std::wstring out_file_path) const {
        std::ofstream out_file(shortwstr2str(out_file_path));
        for (std::string line : source_lines) {
            out_file << line << std::endl;
        }
    }
    void tokenize_file(std::string token_name_delim_str);
    bool get_next_line_with_tokenized(std::string &line, std::string &tokenized_line);
};

Chociaż plik jest ładowany poprawnie przez metodę open, mam problem zepsutego stringu w source_lines[813], tzn. get_next_line() zwraca zepsuty string line. Nie znam momentu w którym source_lines[813] jest psute - używam VSCodium ale nie działają mi pułapki warunkowe.
Proszę o pomoc: jak znaleźć miejsce w kodzie w którym psuty jest string source_lines[813].