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#include <algorithm>
#include <functional>
#include <iostream>
#include <string>
#include <memory>
#include "FWCore/Framework/interface/InputSourceMacros.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Framework/interface/EventPrincipal.h"
#include "FWCore/Framework/interface/LuminosityBlockPrincipal.h"
#include "FWCore/Framework/interface/RunPrincipal.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Utilities/interface/TypeID.h"
#include "DataFormats/Common/interface/OrphanHandle.h"
#include "DataFormats/Provenance/interface/LuminosityBlockAuxiliary.h"
#include "DataFormats/Provenance/interface/RunAuxiliary.h"
#include "DataFormats/Provenance/interface/Timestamp.h"
#include "SimDataFormats/GeneratorProducts/interface/LesHouches.h"
#include "SimDataFormats/GeneratorProducts/interface/LHERunInfoProduct.h"
#include "SimDataFormats/GeneratorProducts/interface/LHEEventProduct.h"
#include "GeneratorInterface/LHEInterface/interface/LHERunInfo.h"
#include "GeneratorInterface/LHEInterface/interface/LHEEvent.h"
#include "GeneratorInterface/LHEInterface/interface/LHEReader.h"
#include "LHESource.h"
using namespace lhef;
LHESource::LHESource(const edm::ParameterSet& params, const edm::InputSourceDescription& desc)
: ProducerSourceFromFiles(params, desc, false),
reader_(new LHEReader(fileNames(0), params.getUntrackedParameter<unsigned int>("skipEvents", 0))),
lheProvenanceHelper_(edm::TypeID(typeid(LHEEventProduct)),
edm::TypeID(typeid(LHERunInfoProduct)),
productRegistryUpdate(),
*branchIDListHelper()),
phid_() {
nextEvent();
lheProvenanceHelper_.lheAugment(nullptr);
// Initialize metadata, and save the process history ID for use every event.
phid_ = lheProvenanceHelper_.lheInit(processHistoryRegistryForUpdate());
// These calls are not wanted, because the principals are used for putting the products.
//produces<LHEEventProduct>();
//produces<LHERunInfoProduct, edm::InRun>();
}
LHESource::~LHESource() {}
void LHESource::endJob() { reader_.reset(); }
void LHESource::nextEvent() {
if (partonLevel_) {
return;
}
bool newFileOpened;
do {
newFileOpened = false;
partonLevel_ = reader_->next(&newFileOpened);
if (newFileOpened) {
incrementFileIndex();
}
} while (newFileOpened && !partonLevel_);
if (!partonLevel_) {
return;
}
auto runInfoThis = partonLevel_->getRunInfo();
if (runInfoThis != runInfoLast_) {
runInfoLast_ = runInfoThis;
std::unique_ptr<LHERunInfoProduct> product = std::make_unique<LHERunInfoProduct>(*runInfoThis->getHEPRUP());
fillRunInfoProduct(*runInfoThis, *product);
if (runInfoProductLast_) {
if (!runInfoProductLast_->mergeProduct(*product)) {
//cannot be merged so must start new Run
runInfoProductLast_ = std::move(product);
lheProvenanceHelper_.lheAugment(runInfoThis.get());
// Initialize metadata, and save the process history ID for use every event.
phid_ = lheProvenanceHelper_.lheInit(processHistoryRegistryForUpdate());
resetRunAuxiliary();
}
} else {
runInfoProductLast_ = std::move(product);
}
}
}
void LHESource::fillRunInfoProduct(lhef::LHERunInfo const& iInfo, LHERunInfoProduct& oProduct) {
for (auto const& h : iInfo.getHeaders()) {
oProduct.addHeader(h);
}
for (auto const& c : iInfo.getComments()) {
oProduct.addComment(c);
}
}
void LHESource::readRun_(edm::RunPrincipal& runPrincipal) {
runAuxiliary()->setProcessHistoryID(phid_);
runPrincipal.fillRunPrincipal(processHistoryRegistryForUpdate());
putRunInfoProduct(runPrincipal);
}
void LHESource::readLuminosityBlock_(edm::LuminosityBlockPrincipal& lumiPrincipal) {
luminosityBlockAuxiliary()->setProcessHistoryID(phid_);
lumiPrincipal.fillLuminosityBlockPrincipal(
processHistoryRegistry().getMapped(lumiPrincipal.aux().processHistoryID()));
}
void LHESource::putRunInfoProduct(edm::RunPrincipal& iRunPrincipal) {
if (runInfoProductLast_) {
auto product = std::make_unique<LHERunInfoProduct>(*runInfoProductLast_);
std::unique_ptr<edm::WrapperBase> rdp = std::make_unique<edm::Wrapper<LHERunInfoProduct>>(std::move(product));
iRunPrincipal.putOrMerge(lheProvenanceHelper_.runProductProductDescription_, std::move(rdp));
}
}
bool LHESource::setRunAndEventInfo(edm::EventID&, edm::TimeValue_t&, edm::EventAuxiliary::ExperimentType&) {
nextEvent();
if (!partonLevel_) {
// We just finished an input file. See if there is another.
nextEvent();
if (!partonLevel_) {
// No more input files.
return false;
}
}
return true;
}
void LHESource::readEvent_(edm::EventPrincipal& eventPrincipal) {
assert(eventCached() || processingMode() != RunsLumisAndEvents);
edm::EventAuxiliary aux(eventID(), processGUID(), edm::Timestamp(presentTime()), false);
aux.setProcessHistoryID(phid_);
eventPrincipal.fillEventPrincipal(aux,
processHistoryRegistry().getMapped(aux.processHistoryID()),
edm::EventSelectionIDVector(),
lheProvenanceHelper_.branchListIndexes_);
std::unique_ptr<LHEEventProduct> product =
std::make_unique<LHEEventProduct>(*partonLevel_->getHEPEUP(), partonLevel_->originalXWGTUP());
if (partonLevel_->getPDF()) {
product->setPDF(*partonLevel_->getPDF());
}
std::for_each(partonLevel_->weights().begin(),
partonLevel_->weights().end(),
std::bind(&LHEEventProduct::addWeight, product.get(), std::placeholders::_1));
product->setScales(partonLevel_->scales());
product->setNpLO(partonLevel_->npLO());
product->setNpNLO(partonLevel_->npNLO());
std::for_each(partonLevel_->getComments().begin(),
partonLevel_->getComments().end(),
std::bind(&LHEEventProduct::addComment, product.get(), std::placeholders::_1));
std::unique_ptr<edm::WrapperBase> edp = std::make_unique<edm::Wrapper<LHEEventProduct>>(std::move(product));
eventPrincipal.put(lheProvenanceHelper_.eventProductProductDescription_,
std::move(edp),
lheProvenanceHelper_.eventProductProvenance_);
partonLevel_.reset();
resetEventCached();
}
std::shared_ptr<edm::RunAuxiliary> LHESource::readRunAuxiliary_() {
edm::Timestamp ts = edm::Timestamp(presentTime());
resetNewRun();
auto aux = std::make_shared<edm::RunAuxiliary>(eventID().run(), ts, edm::Timestamp::invalidTimestamp());
aux->setProcessHistoryID(phid_);
return aux;
}
std::shared_ptr<edm::LuminosityBlockAuxiliary> LHESource::readLuminosityBlockAuxiliary_() {
if (processingMode() == Runs)
return std::shared_ptr<edm::LuminosityBlockAuxiliary>();
edm::Timestamp ts = edm::Timestamp(presentTime());
resetNewLumi();
auto aux = std::make_shared<edm::LuminosityBlockAuxiliary>(
eventID().run(), eventID().luminosityBlock(), ts, edm::Timestamp::invalidTimestamp());
aux->setProcessHistoryID(phid_);
return aux;
}
void LHESource::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
edm::ParameterSetDescription desc;
desc.setComment("A source which reads LHE files.");
edm::ProducerSourceFromFiles::fillDescription(desc);
desc.addUntracked<unsigned int>("skipEvents", 0U)->setComment("Skip the first 'skipEvents' events.");
descriptions.add("source", desc);
}
DEFINE_FWK_INPUT_SOURCE(LHESource);
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