57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
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#pragma once
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#include "comparator.hh"
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#include "error.hh"
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#include "nlohmann/json_fwd.hpp"
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#include "types.hh"
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namespace nix {
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/**
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* The list of available experimental features.
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*
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* If you update this, don’t forget to also change the map defining their
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* string representation in the corresponding `.cc` file.
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**/
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enum struct ExperimentalFeature
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{
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CaDerivations,
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Flakes,
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NixCommand,
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RecursiveNix,
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NoUrlLiterals
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};
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/**
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* Just because writing `ExperimentalFeature::CaDerivations` is way too long
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*/
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using Xp = ExperimentalFeature;
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const std::optional<ExperimentalFeature> parseExperimentalFeature(
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const std::string_view & name);
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std::string_view showExperimentalFeature(const ExperimentalFeature);
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std::ostream & operator<<(
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std::ostream & str,
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const ExperimentalFeature & feature);
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/**
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* Parse a set of strings to the corresponding set of experimental features,
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* ignoring (but warning for) any unkwown feature.
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*/
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std::set<ExperimentalFeature> parseFeatures(const std::set<std::string> &);
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class MissingExperimentalFeature : public Error
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{
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public:
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ExperimentalFeature missingFeature;
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MissingExperimentalFeature(ExperimentalFeature);
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virtual const char * sname() const override
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{
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return "MissingExperimentalFeature";
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}
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};
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}
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