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// ***************************************************************************
// SamSequence.h (c) 2010 Derek Barnett
// Marth Lab, Department of Biology, Boston College
// ---------------------------------------------------------------------------
// Last modified: 10 October 2011 (DB)
// ---------------------------------------------------------------------------
// Provides direct read/write access to the SAM sequence data fields.
// ***************************************************************************

#ifndef SAM_SEQUENCE_H
#define SAM_SEQUENCE_H

#include "api/api_global.h"
#include "api/BamAux.h"
#include <string>
#include <vector>

namespace BamTools {

struct API_EXPORT SamSequence {

    // ctor & dtor
    SamSequence(void);
    SamSequence(const std::string& name, const int& length);
    SamSequence(const std::string& name, const std::string& length);
    SamSequence(const SamSequence& other);
    ~SamSequence(void);

    // query/modify entire sequence
    void Clear(void);                // clears all contents

    // convenience query methods
    bool HasAssemblyID(void) const;  // returns true if sequence has an assembly ID
    bool HasChecksum(void) const;    // returns true if sequence has an MD5 checksum
    bool HasLength(void) const;      // returns true if sequence has a length
    bool HasName(void) const;        // returns true if sequence has a name
    bool HasSpecies(void) const;     // returns true if sequence has a species ID
    bool HasURI(void) const;         // returns true if sequence has a URI

    // data members
    std::string AssemblyID;          // AS:<AssemblyID>
    std::string Checksum;            // M5:<Checksum>
    std::string Length;              // LN:<Length>      *Required for valid SAM header*
    std::string Name;                // SN:<Name>        *Required for valid SAM header*
    std::string Species;             // SP:<Species>
    std::string URI;                 // UR:<URI>
    std::vector<CustomHeaderTag> CustomTags;   // optional custom tags
};

/*! \fn bool operator==(const SamSequence& lhs, const SamSequence& rhs)
    \brief tests equality by comparing sequence names, lengths, & checksums (if available)
*/
API_EXPORT inline bool operator==(const SamSequence& lhs, const SamSequence& rhs) {
    if ( lhs.Name   != rhs.Name   ) return false;
    if ( lhs.Length != rhs.Length ) return false;
    if ( lhs.HasChecksum() && rhs.HasChecksum() )
        return (lhs.Checksum == rhs.Checksum);
    else return true;
}

} // namespace BamTools

#endif // SAM_SEQUENCE_H