public override NmeaMessage Parse(ReadOnlySequence <Byte> sentence)
{
var lexer = new Lexer(sentence);
if (lexer.NextString() != "GPGSV")
{
throw lexer.Error();
}
var gsv = new GSV()
{
TotalMessages = lexer.NextInteger(),
MessageNumber = lexer.NextInteger(),
SatellitesInView = lexer.NextInteger(),
SV1 = SV.Create(lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger())
};
if (!lexer.EOL)
{
gsv.SV2 = SV.Create(lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger());
}
if (!lexer.EOL)
{
gsv.SV3 = SV.Create(lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger());
}
if (!lexer.EOL)
{
gsv.SV4 = SV.Create(lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger(), lexer.NextInteger());
}
gsv.Checksum = lexer.NextChecksum();
return(gsv);
}