ESParentContext.h

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#ifndef FWCore_ServiceRegistry_ESParentContext_h
#define FWCore_ServiceRegistry_ESParentContext_h
 
//
// Original Author: C. Jones
//         Created: 2/07/2021
 
namespace edm {
 
  class ModuleCallingContext;
  class ESModuleCallingContext;
 
  class ESParentContext {
  public:
    enum class Type { kModule, kESModule, kInvalid };
 
    ESParentContext();
    explicit ESParentContext(ModuleCallingContext const*) noexcept;
    explicit ESParentContext(ESModuleCallingContext const*) noexcept;
 
    Type type() const noexcept { return type_; }
 
    ModuleCallingContext const* moduleCallingContext() const;
    ESModuleCallingContext const* esmoduleCallingContext() const;
 
  private:
    Type type_;
 
    union Parent {
      ModuleCallingContext const* module;
      ESModuleCallingContext const* esmodule;
    } parent_;
  };
}  // namespace edm
#endif