ac89bb064a
All OS and IO operations should be moved out, leaving only some misc portable pure functions. This is useful to avoid copious CPP when doing things like Windows and Emscripten ports. Newly exposed functions to break cycles: - `restoreSignals` - `updateWindowSize`
71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
#include "derived-path-map.hh"
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#include "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(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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}, 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(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()
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? &it->second
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: 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) return (ChildNode *)nullptr;
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auto it = n->childMap.find(bfd.output);
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return it != n->childMap.end()
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? &it->second
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: nullptr;
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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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}
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// instantiations
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namespace nix {
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GENERATE_CMP_EXT(
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template<>,
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DerivedPathMap<std::set<std::string>>::ChildNode,
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me->value,
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me->childMap);
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GENERATE_CMP_EXT(
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template<>,
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DerivedPathMap<std::set<std::string>>,
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me->map);
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template struct DerivedPathMap<std::set<std::string>>;
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};
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