deprecated-features.hh

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#pragma once
 
#include "lix/libutil/error.hh"
#include "lix/libutil/json-fwd.hh"
#include "lix/libutil/types.hh"
#include <type_traits>
 
namespace nix {

enum struct DeprecatedFeature
{
    #include "deprecated-features.gen.inc"
    NumDepFeatures, // number of available deprecated features, do not use
};
 
template<>
struct json::avoids_null<DeprecatedFeature> : std::true_type
{};
 
enum struct DeprecatedFeatures {};
 
inline DeprecatedFeatures operator| (DeprecatedFeatures a, DeprecatedFeatures b) {
    return static_cast<DeprecatedFeatures>(static_cast<size_t>(a) | static_cast<size_t>(b));
}
 
inline DeprecatedFeatures operator| (DeprecatedFeatures a, DeprecatedFeature b) {
    return a | static_cast<DeprecatedFeatures>(1 << static_cast<size_t>(b));
}
 
inline DeprecatedFeatures operator& (DeprecatedFeatures a, DeprecatedFeature b) {
    return static_cast<DeprecatedFeatures>(static_cast<size_t>(a) & (1 << static_cast<size_t>(b)));
}

using Dep = DeprecatedFeature;

const std::optional<DeprecatedFeature> parseDeprecatedFeature(
        const std::string_view & name);

std::string_view showDeprecatedFeature(const DeprecatedFeature);

std::ostream & operator<<(
        std::ostream & str,
        const DeprecatedFeature & feature);

DeprecatedFeatures parseDeprecatedFeatures(const std::set<std::string> &);

JSON documentDeprecatedFeatures();

void to_json(JSON &, const DeprecatedFeature &);
void from_json(const JSON &, DeprecatedFeature &);
 
void to_json(JSON &, const DeprecatedFeatures &);
void from_json(const JSON &, DeprecatedFeatures &);

class MissingDeprecatedFeature : public Error
{
public:
    DeprecatedFeature missingFeature;
 
    MissingDeprecatedFeature(DeprecatedFeature missingFeature);
};
 
}