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#ifndef FWCore_ServiceRegistry_ParentContext_h
#define FWCore_ServiceRegistry_ParentContext_h
/**\class edm::ParentContext
Description: This is intended to be used as a member
of ModuleCallingContext.
Usage:
*/
//
// Original Author: W. David Dagenhart
// Created: 7/11/2013
#include <iosfwd>
namespace edm {
class GlobalContext;
class InternalContext;
class ModuleCallingContext;
class PlaceInPathContext;
class StreamContext;
class ParentContext {
public:
enum class Type { kGlobal, kInternal, kModule, kPlaceInPath, kStream, kInvalid };
ParentContext() noexcept;
ParentContext(GlobalContext const*) noexcept;
ParentContext(InternalContext const*) noexcept;
ParentContext(ModuleCallingContext const*) noexcept;
ParentContext(PlaceInPathContext const*) noexcept;
ParentContext(StreamContext const*) noexcept;
[[nodiscard]] Type type() const noexcept { return type_; }
bool isAtEndTransition() const noexcept;
GlobalContext const* globalContext() const noexcept(false);
InternalContext const* internalContext() const noexcept(false);
ModuleCallingContext const* moduleCallingContext() const noexcept(false);
PlaceInPathContext const* placeInPathContext() const noexcept(false);
StreamContext const* streamContext() const noexcept(false);
private:
Type type_;
union Parent {
GlobalContext const* global;
InternalContext const* internal;
ModuleCallingContext const* module;
PlaceInPathContext const* placeInPath;
StreamContext const* stream;
} parent_;
};
std::ostream& operator<<(std::ostream&, ParentContext const&);
} // namespace edm
#endif
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