tshirtmanid/cpp_json_serialization

C++ json serialization library with simple Macros, will support unserialization in the future version

Motivation:
------------
1. xml sucks, json is easy to see by eyes or with the help of the "jsonlint.com" website(try it)
2. Boost.Serialization library doesn't support json serialization as far as I know(xml is supported)
3. in fact, I developed this tool just debugging other people's android C++ app's nested data structure content. like:
typedef std::map<std::string, int> Map1_t;
typedef std::map<std::string, Map1_t> Map2_t;
typedef std::vector<Map2_t> Map2Vec_t;

Map2Vec_t map2_vec;
ma2_vec.push_back(...);
ma2_vec.push_back(...);
....
-> debugging map2_vec content here...

gdb  performed really horrible for these script commands on android(http://www.yolinux.com/TUTORIALS/src/dbinit_stl_views-1.03.txt)
pmap 
pvector
plist 
so I want to dump the content of the nested containers. json is the natural way to record data(copy the dumped result to jsonlint.com to 
view the result)
-----------


Current Features:
-------------------
. using simple macros to dump nested container, arbitary data structure to json format, see the to_json_test.cpp file
--------------------

Planning Features:
-----------------
. unserialization
. Linux Project(at current, I build it using VS2011, and copy the code to android project manually)
. a lot of TODOs in codes




------------------------example1---------------------------------------

#include "to_json.h"

struct S3
{
	std::string name;
	int age;
};


struct S2
{
	std::string name;
	int age;
	S3 s3;
};

struct S1
{
	std::string name;
	int age;
	S2 s2;
};


JSON_STRUCT_BEGIN(S3)
	JSON_STRUCT_MEMBER("name", name)
	JSON_STRUCT_MEMBER("age", age)
JSON_STRUCT_END()

JSON_STRUCT_BEGIN(S2)
	JSON_STRUCT_MEMBER("name", name)
	JSON_STRUCT_MEMBER("age", age)
	JSON_STRUCT_MEMBER("s3", s3)
JSON_STRUCT_END()

JSON_STRUCT_BEGIN(S1)
	JSON_STRUCT_MEMBER("name", name)
	JSON_STRUCT_MEMBER("age", age)
	JSON_STRUCT_MEMBER("s2", s2)
JSON_STRUCT_END()

void test_subchild()
{
	S3 s3;
	s3.name = "s3";
	s3.age = 3;

	S2 s2;
	s2.name = "s2";
	s2.age = 2;
	s2.s3 = s3;

	S1 s1;
	s1.name = "s1";
	s1.age = 1;
	s1.s2 = s2;

	using namespace Json;
	Value v;

	to_json(v, "s1", s1);
	std::string ret = v.toStyledString();
	PRINT_RESULT(ret);
}

-----------------result----------------------------
{
    "s1": {
        "age": 1,
        "name": "s1",
        "s2": {
            "age": 2,
            "name": "s2",
            "s3": {
                "age": 3,
                "name": "s3"
            }
        }
    }
}
--------------------------------------------------------------


------------------------example2---------------------------------------
struct Foo1
{
	std::string m_name;
	int			m_age;
};

JSON_STRUCT_BEGIN(Foo1)
	JSON_STRUCT_MEMBER("name", m_name)
	JSON_STRUCT_MEMBER("age", m_age)
JSON_STRUCT_END()


typedef std::vector<Foo1> FooVec_t;
typedef std::map<std::string, Foo1> FooMap_t;
typedef std::map<std::string, FooVec_t> FooVecMap_t;

static void create_foo_vec(FooVec_t& foos)
{
	for (size_t i = 0; i < 3; ++i) {
		Foo1 foo;
		foo.m_name = "eric";
		foo.m_age = i;

		foos.push_back(foo);
	}
}

void test_foo_vec_map()
{
	using namespace Json;
	Value v;

	FooVecMap_t foo_map;
	for (int i = 0; i < 3; ++i) {
		std::string map_key = (boost::format("foo%d") % i).str();
		FooVec_t foo_vec;
		create_foo_vec(foo_vec);
		foo_map.insert(FooVecMap_t::value_type(map_key, foo_vec));
	}

	to_json(v, "foo_map", foo_map);

	std::string ret = v.toStyledString();
	PRINT_RESULT(ret);
}

--------------------------result--------------------------------
{
   "foo_map" : {
      "foo0" : [
         {
            "age" : 0,
            "name" : "eric"
         },
         {
            "age" : 1,
            "name" : "eric"
         },
         {
            "age" : 2,
            "name" : "eric"
         }
      ],
      "foo1" : [
         {
            "age" : 0,
            "name" : "eric"
         },
         {
            "age" : 1,
            "name" : "eric"
         },
         {
            "age" : 2,
            "name" : "eric"
         }
      ],
      "foo2" : [
         {
            "age" : 0,
            "name" : "eric"
         },
         {
            "age" : 1,
            "name" : "eric"
         },
         {
            "age" : 2,
            "name" : "eric"
         }
      ]
   }
}
--------------------------------------------------------------------------