Function visit_key

include/jsoncons/json_encoder.hpp:482–512

        }

        JSONCONS_VISITOR_RETURN_TYPE visit_key(const string_view_type& name, const ser_context&, std::error_code&) final
        {
            JSONCONS_ASSERT(!stack_.empty());
            if (stack_.back().count() > 0)
            {
                sink_.append(comma_str_.data(),comma_str_.length());
                column_ += comma_str_.length();
            }

            if (stack_.back().is_multi_line())
            {
                stack_.back().new_line_after(true);
                new_line();
            }
            else if (stack_.back().count() > 0 && column_ >= options_.line_length_limit())
            {
                //stack_.back().new_line_after(true);
                new_line(stack_.back().data_pos());
            }

            if (stack_.back().count() == 0)
            {
                stack_.back().set_position(column_);
            }
            sink_.push_back('\"');
            std::size_t length = jsoncons::detail::escape_string(name.data(), name.length(),options_.escape_all_non_ascii(),options_.escape_solidus(),sink_);
            sink_.push_back('\"');
            sink_.append(colon_str_.data(),colon_str_.length());
            column_ += (length+2+colon_str_.length());
            JSONCONS_VISITOR_RETURN;
        }

        JSONCONS_VISITOR_RETURN_TYPE visit_null(semantic_tag, const ser_context&, std::error_code&) final
        {