forked from lix-project/lix
38 lines
948 B
C++
38 lines
948 B
C++
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#pragma once
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#include "types.hh"
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#include <variant>
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#include <nlohmann/json_fwd.hpp>
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namespace nix::fetchers {
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/* Wrap bools to prevent string literals (i.e. 'char *') from being
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cast to a bool in Attr. */
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template<typename T>
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struct Explicit {
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T t;
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};
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typedef std::variant<std::string, int64_t, Explicit<bool>> Attr;
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typedef std::map<std::string, Attr> Attrs;
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Attrs jsonToAttrs(const nlohmann::json & json);
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nlohmann::json attrsToJson(const Attrs & attrs);
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std::optional<std::string> maybeGetStrAttr(const Attrs & attrs, const std::string & name);
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std::string getStrAttr(const Attrs & attrs, const std::string & name);
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std::optional<int64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name);
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int64_t getIntAttr(const Attrs & attrs, const std::string & name);
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std::optional<bool> maybeGetBoolAttr(const Attrs & attrs, const std::string & name);
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bool getBoolAttr(const Attrs & attrs, const std::string & name);
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}
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