lix/src/libutil/json-impls.hh
John Ericson 5ba6e5d0d9 Remove default constructor from OutputsSpec
This forces us to be explicit.

It also requires to rework how `from_json` works. A `JSON_IMPL` is added
to assist with this.
2023-01-11 19:08:19 -05:00

15 lines
750 B
C++

#pragma once
#include "nlohmann/json_fwd.hpp"
// Following https://github.com/nlohmann/json#how-can-i-use-get-for-non-default-constructiblenon-copyable-types
#define JSON_IMPL(TYPE) \
namespace nlohmann { \
using namespace nix; \
template <> \
struct adl_serializer<TYPE> { \
static TYPE from_json(const json & json); \
static void to_json(json & json, TYPE t); \
}; \
}