LHERunInfoProduct.h

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#ifndef SimDataFormats_GeneratorProducts_LHERunInfoProduct_h
#define SimDataFormats_GeneratorProducts_LHERunInfoProduct_h

#include <iterator>
#include <memory>
#include <vector>
#include <string>

//#include <hepml.hpp>

#include "SimDataFormats/GeneratorProducts/interface/LesHouches.h"

class LHERunInfoProduct {
    public:
    class Header {
        public:
        typedef std::vector<std::string>::const_iterator const_iterator;
        typedef std::vector<std::string>::size_type size_type;

        Header() {}
        Header(const std::string &tag) : tag_(tag) {}
        ~Header() {}

        void addLine(const std::string &line) { lines_.push_back(line); }

        const std::string &tag() const { return tag_; }
        const std::vector<std::string> &lines() const { return lines_; }

        size_type size() const { return lines_.size(); }
        const_iterator begin() const { return lines_.begin(); }
        const_iterator end() const { return lines_.end(); }

        bool operator == (const Header &other) const
        { return tag_ == other.tag_ && lines_ == other.lines_; }
        inline bool operator != (const Header &other) const
        { return !(*this == other); }

        private:
        std::string         tag_;
        std::vector<std::string>    lines_;
    };

    typedef std::vector<Header>::size_type size_type;
    typedef std::vector<Header>::const_iterator headers_const_iterator;
    typedef std::vector<std::string>::const_iterator
                        comments_const_iterator;

    LHERunInfoProduct() {}
    LHERunInfoProduct(const lhef::HEPRUP &heprup) : heprup_(heprup) {}
    ~LHERunInfoProduct() {}

    void addHeader(const Header &header) { headers_.push_back(header); }
    void addComment(const std::string &line) { comments_.push_back(line); }

    const lhef::HEPRUP &heprup() const { return heprup_; }

    size_type headers_size() const { return headers_.size(); }
    headers_const_iterator headers_begin() const { return headers_.begin(); }
    headers_const_iterator headers_end() const { return headers_.end(); }

    size_type comments_size() const { return comments_.size(); }
    comments_const_iterator comments_begin() const { return comments_.begin(); }
    comments_const_iterator comments_end() const { return comments_.end(); }

    class const_iterator {
        public:
        typedef std::forward_iterator_tag   iterator_category;
        typedef std::string         value_type;
        typedef std::ptrdiff_t          difference_type;
        typedef std::string         *pointer;
        typedef std::string         &reference;

        const_iterator() : mode(kDone) {}
        ~const_iterator() {}

        bool operator == (const const_iterator &other) const;
        inline bool operator != (const const_iterator &other) const
        { return !operator == (other); }

        inline const_iterator &operator ++ ()
        { next(); return *this; }
        inline const_iterator operator ++ (int dummy)
        { const_iterator orig = *this; next(); return orig; }

        const std::string &operator * () const { return tmp; }
        const std::string *operator -> () const { return &tmp; }

        private:
        friend class LHERunInfoProduct;

        void next();

        enum Mode {
            kHeader,
            kBody,
            kInit,
            kDone,
            kFooter
        };

        const LHERunInfoProduct *runInfo;
        headers_const_iterator  header;
        Header::const_iterator  iter;
        Mode            mode;
        unsigned int        line;
        std::string     tmp;
    };

    const_iterator begin() const;
    const_iterator init() const;
    inline const_iterator end() const { return const_iterator(); }

    static const std::string &endOfFile();

    bool operator == (const LHERunInfoProduct &other) const
    { return heprup_ == other.heprup_ && headers_ == other.headers_ && comments_ == other.comments_; }
    inline bool operator != (const LHERunInfoProduct &other) const
    { return !(*this == other); }

    bool mergeProduct(const LHERunInfoProduct &other);
        bool isProductEqual(const LHERunInfoProduct &other) const
        { return *this == other; }
        static bool isTagComparedInMerge(const std::string& tag);

    private:
    lhef::HEPRUP            heprup_;
    std::vector<Header>     headers_;
    std::vector<std::string>    comments_;
};

#endif // GeneratorRunInfo_LHEInterface_LHERunInfoProduct_h