mirror of
https://github.com/NixOS/nix.git
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84e2963f8e
This will facilitate breaking up Nix into multiple packages for each component with Meson.
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
#pragma once
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///@file
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#include "types.hh"
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#include "hash.hh"
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#include <variant>
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#include <nlohmann/json_fwd.hpp>
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#include <optional>
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namespace nix::fetchers {
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typedef std::variant<std::string, uint64_t, Explicit<bool>> Attr;
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/**
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* An `Attrs` can be thought of a JSON object restricted or simplified
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* to be "flat", not containing any subcontainers (arrays or objects)
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* and also not containing any `null`s.
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*/
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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<uint64_t> maybeGetIntAttr(const Attrs & attrs, const std::string & name);
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uint64_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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std::map<std::string, std::string> attrsToQuery(const Attrs & attrs);
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Hash getRevAttr(const Attrs & attrs, const std::string & name);
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}
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