Here is the detailed blog post of how I built it(with screenshots).

• no memory leaks
• no need to free memory: smart pointers are used
• pretty printing

• clone the repository inside a folder
• include header files: serializer.h print.h
• printer.cpp and serializer.cpp should be compiled and linked with your binary

• all entities are defined in SJSON namespace

• create a new Serializer object with JSON string

std::string json_string{"{\"bar\": 10 }"}

SJSON::Serializer foo(json_string);

SJSON::Json_entity_shared_ptr foo_ptr = foo.serialize();

• Json_entity_shared_ptr has get_type() method. It returns SJSON::Data_type
• definition of SJSON::Data_type

enum class Data_type { OBJECT, BOOLEAN, NUMBER, ARRAY, TNULL, STRING };

• cast the object to its respective type based on the Date\_type returned by get_type()

• if the Data_type is ARRAY, get_value() returns std::vector<Json_entity_shared_ptr>
• if the Data_type is Object, get_value() returns std::map<std::string, Json_entity_shared_ptr>

• Use SJSON::print_json(Json_entity_shared_ptr) to pretty print JSON.

checkout Makefile to replicate tests