ExceptionCollector.cc

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#include "art/Framework/EventProcessor/detail/ExceptionCollector.h"
#include "canvas/Utilities/Exception.h"

#include <cassert>
#include <memory>

using namespace art;

namespace {
  Exception
  make_exception_from_ptr(std::exception_ptr const& eptr) try {
    std::rethrow_exception(eptr);
  }
  catch (std::exception const& e) {
    return Exception{errors::OtherArt} << e.what();
  }
}

[[noreturn]] void
art::detail::ExceptionCollector::rethrow()
{
  assert(!empty());

  auto top_e =
    std::make_unique<Exception>(make_exception_from_ptr(exceptions_.front()));
  for (auto i = std::begin(exceptions_) + 1, e = std::end(exceptions_); i != e;
       ++i) {
    auto eptr = make_exception_from_ptr(*i);
    top_e->append(eptr);
  }
  exceptions_.clear();

  throw *top_e;
}