TriggerExpressionOperators.h

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#ifndef HLTrigger_HLTfilters_TriggerExpressionOperators_h
#define HLTrigger_HLTfilters_TriggerExpressionOperators_h

#include <boost/scoped_ptr.hpp>
#include "HLTrigger/HLTcore/interface/TriggerExpressionEvaluator.h"

namespace triggerExpression {

  // abstract unary operator
  class UnaryOperator : public Evaluator {
  public:
    UnaryOperator(Evaluator* arg) : m_arg(arg) {}

    // initialize the depending modules
    void init(const Data& data) override { m_arg->init(data); }

  protected:
    boost::scoped_ptr<Evaluator> m_arg;
  };

  // abstract binary operator
  class BinaryOperator : public Evaluator {
  public:
    BinaryOperator(Evaluator* arg1, Evaluator* arg2) : m_arg1(arg1), m_arg2(arg2) {}

    // initialize the depending modules
    void init(const Data& data) override {
      m_arg1->init(data);
      m_arg2->init(data);
    }

  protected:
    boost::scoped_ptr<Evaluator> m_arg1;
    boost::scoped_ptr<Evaluator> m_arg2;
  };

  // concrete operators

  class OperatorNot : public UnaryOperator {
  public:
    OperatorNot(Evaluator* arg) : UnaryOperator(arg) {}

    bool operator()(const Data& data) const override { return not(*m_arg)(data); }

    void dump(std::ostream& out) const override {
      out << "NOT ";
      m_arg->dump(out);
    }
  };

  class OperatorAnd : public BinaryOperator {
  public:
    OperatorAnd(Evaluator* arg1, Evaluator* arg2) : BinaryOperator(arg1, arg2) {}

    bool operator()(const Data& data) const override {
      // force the execution af both arguments, otherwise precalers won't work properly
      bool r1 = (*m_arg1)(data);
      bool r2 = (*m_arg2)(data);
      return r1 and r2;
    }

    void dump(std::ostream& out) const override {
      m_arg1->dump(out);
      out << " AND ";
      m_arg2->dump(out);
    }
  };

  class OperatorOr : public BinaryOperator {
  public:
    OperatorOr(Evaluator* arg1, Evaluator* arg2) : BinaryOperator(arg1, arg2) {}

    bool operator()(const Data& data) const override {
      // force the execution af both arguments, otherwise precalers won't work properly
      bool r1 = (*m_arg1)(data);
      bool r2 = (*m_arg2)(data);
      return r1 or r2;
    }

    void dump(std::ostream& out) const override {
      m_arg1->dump(out);
      out << " OR ";
      m_arg2->dump(out);
    }
  };

  class OperatorXor : public BinaryOperator {
  public:
    OperatorXor(Evaluator* arg1, Evaluator* arg2) : BinaryOperator(arg1, arg2) {}

    bool operator()(const Data& data) const override {
      // force the execution af both arguments, otherwise precalers won't work properly
      bool r1 = (*m_arg1)(data);
      bool r2 = (*m_arg2)(data);
      return r1 xor r2;
    }

    void dump(std::ostream& out) const override {
      m_arg1->dump(out);
      out << " XOR ";
      m_arg2->dump(out);
    }
  };

}  // namespace triggerExpression

#endif  // HLTrigger_HLTfilters_TriggerExpressionOperators_h