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#ifndef Parser_ExpressionBase_h
#define Parser_ExpressionBase_h
/* \class reco::parser::ExpressionBase
*
* Base class for parsed expressions
*
* \author original version: Chris Jones, Cornell,
* adapted by Luca Lista, INFN
*
*/
#include <vector>
#include <memory>
namespace edm {
class ObjectWithDict;
}
namespace reco {
namespace parser {
struct ExpressionBase {
virtual ~ExpressionBase() {}
virtual double value(const edm::ObjectWithDict&) const = 0;
};
typedef std::shared_ptr<ExpressionBase> ExpressionPtr;
} // namespace parser
} // namespace reco
#endif
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