ExceptionCollector.h

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#ifndef FWCore_Utilities_ExceptionCollector_h
#define FWCore_Utilities_ExceptionCollector_h

#include <functional>
#include <memory>
#include <string>

namespace cms {
  class Exception;
}

namespace edm {
  class ExceptionCollector {
  public:
    ExceptionCollector(std::string const& initialMessage);
    ~ExceptionCollector();
    bool hasThrown() const;
    void rethrow() const;
    void call(std::function<void(void)>);
    void addException(cms::Exception const& exception);

  private:
    std::string initialMessage_;
    std::unique_ptr<cms::Exception> firstException_;
    std::unique_ptr<cms::Exception> accumulatedExceptions_;
    int nExceptions_;
  };
}  // namespace edm

#endif