NMEAParserPacket.h

 
#pragma once
#include "NMEAParserData.h"
#include <NDEVR/StringView.h>
#include <NDEVR/String.h>
#include <NDEVR/Dictionary.h>
namespace NDEVR
{
    class NMEASentenceReader
    {
    public:
        virtual NMEAUpdateInfo processRxCommand(const StringView& command, const StringView& data, NMEAInfo& info) = 0;
        virtual Buffer<StringView> supportedTypes() const = 0;
        virtual StringView name() const = 0;
    protected:
        void onMessageReceived();
    public:
        TimeSpan average_rx_rate = Constant<TimeSpan>::Invalid; 
        Time last_rx_time = Constant<Time>::Invalid;            
        uint04 count = 0;                                       
    protected:
        Buffer<StringView> m_sentence_parts;    
    };

    class NMEAReader
    {
    public:
        NMEAReader();
        ~NMEAReader();
        NMEAUpdateInfo processNMEABuffer(const StringView& data);
        virtual NMEAUpdateInfo processRxCommand(const StringView& command, const StringView& data);
        void reset();
        void addSentenceReader(NMEASentenceReader* reader);
        void addSentenceReader(const StringView& string, NMEASentenceReader* reader) { m_sentence_readers.add(string, reader); };
        Buffer<StringView> activeSentenceTypes() const;
        const Buffer<NMEASentenceReader*>& readers() const { return m_readers; };
        const NMEAInfo& info() const { return m_info; }
    private:
        enum PARSE_STATE
        {
            PARSE_STATE_SOM = 0, 
            PARSE_STATE_CMD, 
            PARSE_STATE_DATA, 
            PARSE_STATE_CHECKSUM_1, 
            PARSE_STATE_CHECKSUM_2, 
        };
    protected:
        NMEAInfo m_info;    
    private:
        Buffer<NMEASentenceReader*> m_readers;                      
        Dictionary<StringView, NMEASentenceReader*> m_sentence_readers; 
        PARSE_STATE m_nState;                                   
        uint01 m_u8Checksum;                                
        uint01 m_u8ReceivedChecksum;                        
        String m_pCommand;  
        String m_pData;     
    };
}