TriggerExpressionL1uGTReader.cc

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#include <iostream>
#include <regex>

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Utilities/interface/RegexMatch.h"
#include "CondFormats/L1TObjects/interface/L1GtTriggerMask.h"
#include "CondFormats/L1TObjects/interface/L1TUtmTriggerMenu.h"
#include "DataFormats/L1GlobalTrigger/interface/L1GlobalTriggerReadoutRecord.h"
#include "HLTrigger/HLTcore/interface/TriggerExpressionData.h"
#include "HLTrigger/HLTcore/interface/TriggerExpressionL1uGTReader.h"

namespace triggerExpression {

// define the result of the module from the L1 reults
bool L1uGTReader::operator()(const Data & data) const {
  if (not data.hasL1T())
    return false;

  std::vector<bool> const & word = data.l1tResults();
  if (word.empty())
    return false;

  for (auto const & trigger: m_triggers)
    if (trigger.second < word.size() and word[trigger.second])
      return true;

  return false;
}

void L1uGTReader::dump(std::ostream & out) const {
  if (m_triggers.empty()) {
    out << "FALSE";
  } else if (m_triggers.size() == 1) {
    out << m_triggers[0].first;
  } else {
    out << "(" << m_triggers[0].first;
    for (unsigned int i = 1; i < m_triggers.size(); ++i)
      out << " OR " << m_triggers[i].first;
    out << ")";
  }
}

void L1uGTReader::init(const Data & data) {
  if (not data.hasL1T())
    return;

  const L1TUtmTriggerMenu & menu = data.l1tMenu();

  // clear the previous configuration
  m_triggers.clear();

  // check if the pattern has is a glob expression, or a single trigger name
  auto const & triggerMap = menu.getAlgorithmMap();
  if (not edm::is_glob(m_pattern)) {
    // no wildcard expression
    auto entry = triggerMap.find(m_pattern);
    if (entry != triggerMap.end()) {
      // single L1 bit
      m_triggers.push_back( std::make_pair(m_pattern, entry->second.getIndex()) );
    } else
      // trigger not found in the current menu
      if (data.shouldThrow())
        throw cms::Exception("Configuration") << "requested L1 trigger \"" << m_pattern << "\" does not exist in the current L1 menu";
      else
        edm::LogWarning("Configuration") << "requested L1 trigger \"" << m_pattern << "\" does not exist in the current L1 menu";
  } else {
    // expand wildcards in the pattern
    bool match = false;
    std::regex re(edm::glob2reg(m_pattern));
    for (auto const & entry: triggerMap)
      if (std::regex_match(entry.first, re)) {
        match = true;
        m_triggers.push_back( std::make_pair(entry.first, entry.second.getIndex()) );
      }

    if (not match) {
      // m_pattern does not match any L1 bits
      if (data.shouldThrow())
        throw cms::Exception("Configuration") << "requested pattern \"" << m_pattern <<  "\" does not match any L1 trigger in the current menu";
      else
        edm::LogWarning("Configuration") << "requested pattern \"" << m_pattern <<  "\" does not match any L1 trigger in the current menu";
    }
  }

}

} // namespace triggerExpression