1 #include <cstdlib>
2 #include <iostream>
3 #include <sstream>
4
5 using namespace std;
6
build_code(int max_args)7 void build_code(int max_args)
8 {
9 stringstream ss;
10 ss << "#define NLOHMANN_JSON_EXPAND( x ) x" << endl;
11 ss << "#define NLOHMANN_JSON_GET_MACRO(";
12 for (int i = 0 ; i < max_args ; i++)
13 ss << "_" << i + 1 << ", ";
14 ss << "NAME,...) NAME" << endl;
15
16 ss << "#define NLOHMANN_JSON_PASTE(...) NLOHMANN_JSON_EXPAND(NLOHMANN_JSON_GET_MACRO(__VA_ARGS__, \\" << endl;
17 for (int i = max_args ; i > 1 ; i--)
18 ss << "NLOHMANN_JSON_PASTE" << i << ", \\" << endl;
19 ss << "NLOHMANN_JSON_PASTE1)(__VA_ARGS__))" << endl;
20
21 ss << "#define NLOHMANN_JSON_PASTE2(func, v1) func(v1)" << endl;
22 for (int i = 3 ; i <= max_args ; i++)
23 {
24 ss << "#define NLOHMANN_JSON_PASTE" << i << "(func, ";
25 for (int j = 1 ; j < i -1 ; j++)
26 ss << "v" << j << ", ";
27 ss << "v" << i-1 << ") NLOHMANN_JSON_PASTE2(func, v1) NLOHMANN_JSON_PASTE" << i-1 << "(func, ";
28 for (int j = 2 ; j < i-1 ; j++)
29 ss << "v" << j << ", ";
30 ss << "v" << i-1 << ")" << endl;
31 }
32
33 cout << ss.str() << endl;
34 }
35
main(int argc, char** argv)36 int main(int argc, char** argv)
37 {
38 int max_args = 64;
39 build_code(max_args);
40
41 return 0;
42 }
43
44