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#pragma once
///@file
#include "types.hh"
#include "hash.hh"
#include <variant>
#include <nlohmann/json_fwd.hpp>
#include <optional>
namespace nix::fetchers {
typedef std::variant<std::string, uint64_t, Explicit<bool>> Attr;
typedef std::map<std::string, Attr> Attrs;
Attrs jsonToAttrs(const nlohmann::json & json);
nlohmann::json attrsToJSON(const Attrs & attrs);
std::optional<std::string> maybeGetStrAttr(const Attrs & attrs, const std::string & name);
std::string getStrAttr(const Attrs & attrs, const std::string & name);
std::optional<uint64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name);
uint64_t getIntAttr(const Attrs & attrs, const std::string & name);
std::optional<bool> maybeGetBoolAttr(const Attrs & attrs, const std::string & name);
bool getBoolAttr(const Attrs & attrs, const std::string & name);
std::map<std::string, std::string> attrsToQuery(const Attrs & attrs);
}
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