Utils/interface/StringCutObjectSelector.h

0001 #ifndef CommonTools_Utils_StringCutObjectSelector_h
0002 #define CommonTools_Utils_StringCutObjectSelector_h
0003 /* \class StringCutObjectSelector
0004  *
0005  * \author Luca Lista, INFN
0006  *
0007  * $Id: StringCutObjectSelector.h,v 1.4 2012/06/26 21:09:37 wmtan Exp $
0008  */
0009 #include "FWCore/Utilities/interface/EDMException.h"
0010 #include "CommonTools/Utils/interface/parser/SelectorPtr.h"
0011 #include "CommonTools/Utils/interface/parser/SelectorBase.h"
0012 #include "CommonTools/Utils/interface/cutParser.h"
0013 #include "FWCore/Reflection/interface/ObjectWithDict.h"
0014
0015 template <typename T, bool DefaultLazyness = false>
0016 struct StringCutObjectSelector {
0017   StringCutObjectSelector(const std::string &cut, bool lazy = DefaultLazyness) : type_(typeid(T)) {
0018     if (!reco::parser::cutParser<T>(cut, select_, lazy)) {
0019       throw edm::Exception(edm::errors::Configuration, "failed to parse \"" + cut + "\"");
0020     }
0021   }
0022   StringCutObjectSelector(const reco::parser::SelectorPtr &select) : select_(select), type_(typeid(T)) {}
0023   bool operator()(const T &t) const {
0024     edm::ObjectWithDict o(type_, const_cast<T *>(&t));
0025     return (*select_)(o);
0026   }
0027
0028 private:
0029   reco::parser::SelectorPtr select_;
0030   edm::TypeWithDict type_;
0031 };
0032
0033 #endif