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[JSON] dirty code for building intrusive and non-intrusive serialisation/deserialisation macros for custom types

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pf 2020-07-18 16:08:29 +01:00
parent 43ab8a2357
commit beb1fb48f0
1 changed files with 85 additions and 0 deletions
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tools/NlohmannMacroBuilder/main.cpp Normal file
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#include <cstdlib>
#include <iostream>
#include <sstream>
#include "../../single_include/nlohmann/json.hpp"
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;
}
struct example_struct
{
int a;
int b;
int c;
int d;
int e;
int f;
int g;
int h;
int i;
int j;
int k;
int l;
int m;
int n;
int o;
int p;
int q;
int r;
int s;
int t;
int u;
int v;
int w;
int x;
int y;
int z;
NLOHMANN_DEFINE_TYPE_INTRUSIVE(example_struct, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z)
};
void test_code()
{
example_struct a;
nlohmann::json j = a;
cout << j << endl;
}
/*
*
*/
int main(int argc, char** argv)
{
int max_args = 64;
build_code(max_args);
// test_code();
return 0;
}