forked from lix-project/lix
af99941279
Rather than having them plain strings scattered through the whole codebase, create an enum containing all the known experimental features. This means that - Nix can now `warn` when an unkwown experimental feature is passed (making it much nicer to spot typos and spot deprecated features) - It’s now easy to remove a feature altogether (once the feature isn’t experimental anymore or is dropped) by just removing the field for the enum and letting the compiler point us to all the now invalid usages of it.
119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
#include "derived-path.hh"
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#include "store-api.hh"
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#include <nlohmann/json.hpp>
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namespace nix {
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nlohmann::json DerivedPath::Opaque::toJSON(ref<Store> store) const {
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nlohmann::json res;
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res["path"] = store->printStorePath(path);
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return res;
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}
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nlohmann::json BuiltPath::Built::toJSON(ref<Store> store) const {
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nlohmann::json res;
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res["drvPath"] = store->printStorePath(drvPath);
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for (const auto& [output, path] : outputs) {
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res["outputs"][output] = store->printStorePath(path);
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}
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return res;
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}
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StorePathSet BuiltPath::outPaths() const
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{
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return std::visit(
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overloaded{
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[](const BuiltPath::Opaque & p) { return StorePathSet{p.path}; },
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[](const BuiltPath::Built & b) {
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StorePathSet res;
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for (auto & [_, path] : b.outputs)
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res.insert(path);
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return res;
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},
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}, raw()
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);
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}
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nlohmann::json derivedPathsWithHintsToJSON(const BuiltPaths & buildables, ref<Store> store) {
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auto res = nlohmann::json::array();
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for (const BuiltPath & buildable : buildables) {
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std::visit([&res, store](const auto & buildable) {
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res.push_back(buildable.toJSON(store));
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}, buildable.raw());
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}
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return res;
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}
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std::string DerivedPath::Opaque::to_string(const Store & store) const {
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return store.printStorePath(path);
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}
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std::string DerivedPath::Built::to_string(const Store & store) const {
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return store.printStorePath(drvPath)
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+ "!"
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+ (outputs.empty() ? std::string { "*" } : concatStringsSep(",", outputs));
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}
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std::string DerivedPath::to_string(const Store & store) const
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{
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return std::visit(
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[&](const auto & req) { return req.to_string(store); },
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this->raw());
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}
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DerivedPath::Opaque DerivedPath::Opaque::parse(const Store & store, std::string_view s)
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{
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return {store.parseStorePath(s)};
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}
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DerivedPath::Built DerivedPath::Built::parse(const Store & store, std::string_view s)
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{
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size_t n = s.find("!");
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assert(n != s.npos);
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auto drvPath = store.parseStorePath(s.substr(0, n));
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auto outputsS = s.substr(n + 1);
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std::set<string> outputs;
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if (outputsS != "*")
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outputs = tokenizeString<std::set<string>>(outputsS, ",");
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return {drvPath, outputs};
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}
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DerivedPath DerivedPath::parse(const Store & store, std::string_view s)
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{
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size_t n = s.find("!");
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return n == s.npos
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? (DerivedPath) DerivedPath::Opaque::parse(store, s)
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: (DerivedPath) DerivedPath::Built::parse(store, s);
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}
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RealisedPath::Set BuiltPath::toRealisedPaths(Store & store) const
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{
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RealisedPath::Set res;
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std::visit(
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overloaded{
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[&](const BuiltPath::Opaque & p) { res.insert(p.path); },
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[&](const BuiltPath::Built & p) {
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auto drvHashes =
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staticOutputHashes(store, store.readDerivation(p.drvPath));
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for (auto& [outputName, outputPath] : p.outputs) {
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if (settings.isExperimentalFeatureEnabled(
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Xp::CaDerivations)) {
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auto thisRealisation = store.queryRealisation(
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DrvOutput{drvHashes.at(outputName), outputName});
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assert(thisRealisation); // We’ve built it, so we must h
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// ve the realisation
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res.insert(*thisRealisation);
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} else {
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res.insert(outputPath);
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}
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}
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},
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},
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raw());
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return res;
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}
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}
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