json/tools/macro_builder/main.cpp
Niels Lohmann b21c345179
Reorganize directories (#3462)
* 🚚 move files
* 🚚 rename doc folder to docs
* 🚚 rename test folder to tests
2022-05-01 09:41:50 +02:00

44 lines
1.2 KiB
C++

#include <cstdlib>
#include <iostream>
#include <sstream>
using namespace std;
void build_code(int max_args)
{
stringstream ss;
ss << "#define NLOHMANN_JSON_EXPAND( x ) x" << endl;
ss << "#define NLOHMANN_JSON_GET_MACRO(";
for (int i = 0 ; i < max_args ; i++)
ss << "_" << i + 1 << ", ";
ss << "NAME,...) NAME" << endl;
ss << "#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \\" << endl;
for (int i = max_args ; i > 1 ; i--)
ss << "NLOHMANN_JSON_PASTE" << i << ", \\" << endl;
ss << "NLOHMANN_JSON_PASTE1)(__VA_ARGS__))" << endl;
ss << "#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)" << endl;
for (int i = 3 ; i <= max_args ; i++)
{
ss << "#define NLOHMANN_JSON_PASTE" << i << "(func, ";
for (int j = 1 ; j < i -1 ; j++)
ss << "v" << j << ", ";
ss << "v" << i-1 << ") NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE" << i-1 << "(func, ";
for (int j = 2 ; j < i-1 ; j++)
ss << "v" << j << ", ";
ss << "v" << i-1 << ")" << endl;
}
cout << ss.str() << endl;
}
int main(int argc, char** argv)
{
int max_args = 64;
build_code(max_args);
return 0;
}