Constant.h


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#ifndef CONSTANT_H
#define CONSTANT_H

#include "Expression.h"

template<class T>
struct Constant : public Expression<T> {
  Constant(const T& value) : _value(value) { }

  T value() const {
    return this->_value;
  }

  T eval(const std::map<std::string, T>&) const {
    return _value;
  }

  private:
  const T _value;
};

#endif