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https://github.com/NixOS/nix.git
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e4f62e4608
* It is tough to contribute to a project that doesn't use a formatter, * It is extra hard to contribute to a project which has configured the formatter, but ignores it for some files * Code formatting makes it harder to hide obscure / weird bugs by accident or on purpose, Let's rip the bandaid off? Note that PRs currently in flight should be able to be merged relatively easily by applying `clang-format` to their tip prior to merge.
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
#include "nix/store/derived-path-map.hh"
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#include "nix/util/util.hh"
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namespace nix {
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template<typename V>
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typename DerivedPathMap<V>::ChildNode & DerivedPathMap<V>::ensureSlot(const SingleDerivedPath & k)
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{
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std::function<ChildNode &(const SingleDerivedPath &)> initIter;
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initIter = [&](const auto & k) -> auto & {
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return std::visit(
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overloaded{
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[&](const SingleDerivedPath::Opaque & bo) -> auto & {
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// will not overwrite if already there
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return map[bo.path];
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},
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[&](const SingleDerivedPath::Built & bfd) -> auto & {
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auto & n = initIter(*bfd.drvPath);
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return n.childMap[bfd.output];
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},
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},
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k.raw());
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};
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return initIter(k);
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}
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template<typename V>
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typename DerivedPathMap<V>::ChildNode * DerivedPathMap<V>::findSlot(const SingleDerivedPath & k)
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{
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std::function<ChildNode *(const SingleDerivedPath &)> initIter;
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initIter = [&](const auto & k) {
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return std::visit(
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overloaded{
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[&](const SingleDerivedPath::Opaque & bo) {
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auto it = map.find(bo.path);
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return it != map.end() ? &it->second : nullptr;
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},
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[&](const SingleDerivedPath::Built & bfd) {
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auto * n = initIter(*bfd.drvPath);
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if (!n)
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return (ChildNode *) nullptr;
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auto it = n->childMap.find(bfd.output);
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return it != n->childMap.end() ? &it->second : nullptr;
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},
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},
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k.raw());
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};
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return initIter(k);
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}
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} // namespace nix
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// instantiations
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#include "nix/store/build/derivation-trampoline-goal.hh"
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namespace nix {
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template<>
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bool DerivedPathMap<StringSet>::ChildNode::operator==(const DerivedPathMap<StringSet>::ChildNode &) const noexcept =
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default;
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// TODO libc++ 16 (used by darwin) missing `std::map::operator <=>`, can't do yet.
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#if 0
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template<>
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std::strong_ordering DerivedPathMap<StringSet>::ChildNode::operator <=> (
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const DerivedPathMap<StringSet>::ChildNode &) const noexcept = default;
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#endif
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template struct DerivedPathMap<StringSet>::ChildNode;
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template struct DerivedPathMap<StringSet>;
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template struct DerivedPathMap<std::map<OutputsSpec, std::weak_ptr<DerivationTrampolineGoal>>>;
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}; // namespace nix
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