Variable.h

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#ifndef PhysicsTools_MVAComputer_Variable_h
#define PhysicsTools_MVAComputer_Variable_h
// -*- C++ -*-
//
// Package:     MVAComputer
// Class  :     Variable
//

//
// Author:  Christophe Saout <christophe.saout@cern.ch>
// Created:     Sat Apr 24 15:18 CEST 2007
//

#include <vector>
#include <string>

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

namespace PhysicsTools {

class Variable {
    public:
    enum Flags {
        FLAG_NONE   = 0,
        FLAG_OPTIONAL   = 1 << 0,
        FLAG_MULTIPLE   = 1 << 1,
        FLAG_ALL    = (1 << 2) - 1
    };

    class Value {
        public:
        inline Value() {}
        inline Value(const Value &orig) :
            name(orig.name), value(orig.value) {}
        inline Value(AtomicId name, double value) :
            name(name), value(value) {}

        inline Value &operator = (const Value &orig)
        { name = orig.name; value = orig.value; return *this; }

        inline void setName(AtomicId name) { this->name = name; }
        inline void setValue(double value) { this->value = value; }

        inline AtomicId getName() const { return name; }
        inline double getValue() const { return value; }

        private:
        AtomicId    name;
        double      value;
    };

    class ValueList {
        public:
        typedef std::vector<Value>  _Data;
        typedef _Data::value_type   value_type;
        typedef _Data::pointer      pointer;
        typedef _Data::const_pointer    const_pointer;
        typedef _Data::reference    reference;
        typedef _Data::const_reference  const_reference;
        typedef _Data::iterator     iterator;
        typedef _Data::const_iterator   const_iterator;
        typedef _Data::size_type    size_type;
        typedef _Data::difference_type  difference_type;
        typedef _Data::allocator_type   allocator_type;

        inline ValueList() {}
        inline ValueList(const ValueList &orig) : data_(orig.data_) {}
        inline ValueList(const _Data &orig) : data_(orig) {}
        inline ~ValueList() {}

        inline ValueList &operator = (const ValueList &orig)
        { data_ = orig.data_; return *this; }

        inline void clear()
        { data_.clear(); }

        inline void add(AtomicId id, double value)
        { data_.push_back(Value(id, value)); }

        inline void add(const Value &value)
        { data_.push_back(value); }

        inline size_type size() const { return data_.size(); }
        bool empty() const { return data_.empty(); }

        inline const_iterator begin() const { return data_.begin(); }
        iterator begin() { return data_.begin(); }

        inline const_iterator end() const { return data_.end(); }
        iterator end() { return data_.end(); }

        inline const _Data &values() const { return data_; }
        _Data &values() { return data_; }

        inline const_reference front() const { return *data_.begin(); }
        reference front() { return *data_.begin(); }

        inline const_reference back() const { return *data_.rbegin(); }
        reference back() { return *data_.rbegin(); }

        inline const_pointer data() const { return &front(); }
        pointer data() { return &front(); }

        private:
        std::vector<Value>  data_;
    };

    inline Variable() {}
    inline Variable(const Variable &orig) :
        name(orig.name), flags(orig.flags) {}
    inline Variable(AtomicId name, Flags flags = FLAG_NONE) :
        name(name), flags(flags) {}

    const AtomicId getName() const { return name; }
    Flags getFlags() const { return flags;}

    bool isOptional() const { return flags & FLAG_OPTIONAL; }
    bool isMultiple() const { return flags & FLAG_MULTIPLE; }

    private:
    AtomicId    name;
    Flags       flags;
};

} // namespace PhysicsTools

#endif // PhysicsTools_MVAComputer_Variable_h