Method push_back

src/script/interpreter.cpp:406–414

    bool empty() const { return m_stack_size == 0; }
    bool all_true() const { return m_first_false_pos == NO_FALSE; }
    void push_back(bool f)
    {
        if (m_first_false_pos == NO_FALSE && !f) {
            // The stack consists of all true values, and a false is added.
            // The first false value will appear at the current size.
            m_first_false_pos = m_stack_size;
        }
        ++m_stack_size;
    }
    void pop_back()
    {
        assert(m_stack_size > 0);