SourceVariableSet.h

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#ifndef PhysicsTools_MVATrainer_SourceVariableSet_h
#define PhysicsTools_MVATrainer_SourceVariableSet_h

#include <cstddef>
#include <vector>
#include <algorithm>

#include "PhysicsTools/MVAComputer/interface/AtomicId.h"

namespace PhysicsTools {

class SourceVariable;

class SourceVariableSet {
    public:
    typedef std::size_t size_type;

    SourceVariableSet() {}
    ~SourceVariableSet() {}

    enum Magic {
        kRegular = 0,
        kTarget,
        kWeight
    };

    SourceVariable *find(AtomicId name) const; SourceVariable
    *find(Magic magic) const;

    bool append(SourceVariable *var, Magic magic = kRegular,
                int offset = -1);
    std::vector<SourceVariable*> get(bool withMagic = false) const;
    size_type size(bool withMagic = false) const
    {
        if (withMagic)
            return vars.size();
        else
            return std::count_if(vars.begin(), vars.end(),
                                 std::mem_fun_ref(&PosVar::noMagic));
    }

    private:
    struct PosVar {
        unsigned int    pos;
        SourceVariable  *var;
        Magic       magic;

        bool noMagic() const { return magic == kRegular; }

        static bool VarNameLess(const PosVar &var, AtomicId name)
        { return var.var->getName() < name; }
    };

    std::vector<PosVar> vars;
};

} // namespace PhysicsTools

#endif // PhysicsTools_MVATrainer_SourceVariable_h