#include "rapidjson/reader.h"
#include <iostream>
#include <sstream>

using namespace rapidjson;
using namespace std;

// If you can require C++11, you could use std::to_string here
template <typename T> std::string stringify(T x) {
 std::stringstream ss;
 ss << x;
 return ss.str();
}

struct MyHandler {
 const char* type;
 std::string data;
 
 MyHandler() : type(), data() {}

 bool Null() { type = "Null"; data.clear(); return true; }
 bool Bool(bool b) { type = "Bool:"; data = b? "true": "false"; return true; }
 bool Int(int i) { type = "Int:"; data = stringify(i); return true; }
 bool Uint(unsigned u) { type = "Uint:"; data = stringify(u); return true; }
 bool Int64(int64_t i) { type = "Int64:"; data = stringify(i); return true; }
 bool Uint64(uint64_t u) { type = "Uint64:"; data = stringify(u); return true; }
 bool Double(double d) { type = "Double:"; data = stringify(d); return true; }
 bool RawNumber(const char* str, SizeType length, bool) { type = "Number:"; data = std::string(str, length); return true; }
 bool String(const char* str, SizeType length, bool) { type = "String:"; data = std::string(str, length); return true; }
 bool StartObject() { type = "StartObject"; data.clear(); return true; }
 bool Key(const char* str, SizeType length, bool) { type = "Key:"; data = std::string(str, length); return true; }
 bool EndObject(SizeType memberCount) { type = "EndObject:"; data = stringify(memberCount); return true; }
 bool StartArray() { type = "StartArray"; data.clear(); return true; }
 bool EndArray(SizeType elementCount) { type = "EndArray:"; data = stringify(elementCount); return true; }
private:
 MyHandler(const MyHandler& noCopyConstruction);
 MyHandler& operator=(const MyHandler& noAssignment);
};

int main() {
 const char json[] = " { \"hello\" : \"world\", \"t\" : true , \"f\" : false, \"n\": null, \"i\":123, \"pi\": 3.1416, \"a\":[1, 2, 3, 4] } ";

 MyHandler handler;
 Reader reader;
 StringStream ss(json);
 reader.IterativeParseInit();
 while (!reader.IterativeParseComplete()) {
 reader.IterativeParseNext<kParseDefaultFlags>(ss, handler);
 cout << handler.type << handler.data << endl;
 }

 return 0;
}