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#ifndef CommonTools_Utils_formulaFunctionOneArgEvaluator_h
#define CommonTools_Utils_formulaFunctionOneArgEvaluator_h
// -*- C++ -*-
//
// Package: CommonTools/Utils
// Class : formulaFunctionOneArgEvaluator
//
/**\class reco::formula::FunctionOneArgEvaluator formulaFunctionOneArgEvaluator.h "formulaFunctionOneArgEvaluator.h"
Description: [one line class summary]
Usage:
<usage>
*/
//
// Original Author: Christopher Jones
// Created: Wed, 23 Sep 2015 17:41:33 GMT
//
// system include files
#include <memory>
#include <functional>
// user include files
#include "formulaEvaluatorBase.h"
// forward declarations
namespace reco {
namespace formula {
class FunctionOneArgEvaluator : public EvaluatorBase {
public:
template <typename T>
explicit FunctionOneArgEvaluator(std::shared_ptr<EvaluatorBase> iArg, T iFunc)
: m_arg(std::move(iArg)), m_function(iFunc) {}
// ---------- const member functions ---------------------
double evaluate(double const* iVariables, double const* iParameters) const final {
return m_function(m_arg->evaluate(iVariables, iParameters));
}
std::vector<std::string> abstractSyntaxTree() const final {
auto ret = shiftAST(m_arg->abstractSyntaxTree());
ret.emplace(ret.begin(), "func 1 arg");
return ret;
}
FunctionOneArgEvaluator(const FunctionOneArgEvaluator&) = delete;
const FunctionOneArgEvaluator& operator=(const FunctionOneArgEvaluator&) = delete;
private:
// ---------- member data --------------------------------
std::shared_ptr<EvaluatorBase> m_arg;
std::function<double(double)> m_function;
};
} // namespace formula
} // namespace reco
#endif
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