Possible to call dump from lldb?

[shanekoss]

• Describe what you want to achieve.

Would like to be able to dump a json object while debugging. Is there another way to view the object as a string while debugging (without previously inserting a std::cout << test.dump() ?

• Describe what you tried.

(lldb) p test.dump(1,' ',true,nlohmann::detail::error_handler_t::ignore)

but got error:

error: cannot initialize a parameter of type 'error_handler_t' (aka 'nlohmann::detail::error_handler_t') with an rvalue of type 'int'

• Describe which system (OS, compiler) you are using.

OSX 10.13.6 / Xcode 10.1

• Describe which version of the library you are using (release version, develop branch).

3.4.0

Thanks!

[nlohmann]

The error handler has a default parameter - can you skip it in the call?

[shanekoss]

@nlohmann - thanks for the reply.

I've tried that, but then i get the error:

error: too few arguments to function call, expected 4, have 3
'dump' declared here

[nlohmann]

Strange. Can you try to used nlohmann::json::error_harndler_t instead?

[shanekoss]

Sure.

(lldb) p test.dump(1,' ',true,nlohmann::json::error_handler_t::ignore)

produces:

error: 'error_handler_t' (aka 'nlohmann::detail::error_handler_t') is not a class, namespace, or enumeration

[shanekoss]

just checking back on this - any ideas? thanks!

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[shanekoss]

any luck here - is this not possible? cheers.

[jaredgrubb]

Can you just put in the number 2 and ignore the type?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[jmarrec]

This seems to work somewhat!

(lldb)  p obj->dump(1,' ',true,nlohmann::json::error_handler_t::ignore)
(nlohmann::basic_json<std::__debug::map, std::__debug::vector, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, long, unsigned long, double, std::allocator, nlohmann::adl_serializer>::string_t) $10 = {
  _M_dataplus = (_M_p = "{\n "Water Heater Heat Pump Wrapped Condenser 1": {\n  "air_inlet_node_name": "Node 127",\n  "air_outlet_node_name": "Node 128",\n  "availability_schedule_name": "Always On Discrete",\n  "compressor_location": "Zone",\n  "compressor_setpoint_temperature_schedule_name": "Schedule Ruleset 11",\n  "condenser_bottom_location": 0.0664166667,\n  "condenser_top_location": 0.8634166667,\n  "control_sensor_1_height_in_stratified_tank": 1.262,\n  "control_sensor_1_weight": 0.75,\n  "control_sensor_2_height_in_stratified_tank": 0.464,\n  "dead_band_temperature_difference": 3.89,\n  "dx_coil_name": "Coil Water Heating Air To Water Heat Pump Wrapped 1",\n  "dx_coil_object_type": "Coil:WaterHeating:AirToWaterHeatPump:Wrapped",\n  "evaporator_air_flow_rate": 0.2279,\n  "fan_name": "Fan System Model 4",\n  "fan_object_type": "Fan:SystemModel",\n  "fan_placement": "DrawThrough",\n  "idf_max_extensible_fields": 0,\n  "idf_max_fields": 38,\n  "idf_order": 403,\n  "inlet_air_configuration": "ZoneAirOnly",\n  "inlet_air_humidity_schedule_name": "Sched")
  _M_string_length = 1678
   = (_M_local_buf = char [16] @ 0x00000000029cb6e0, _M_allocated_capacity = 2944)
}

[shanekoss]

@jmarrec - thanks! That is a lifesaver.