import AbstractPacket from "./AbstractPacket" ; export default abstract class ReceivablePacket extends AbstractPacket { _buffer ! : Uint8Array ; _offset = 0 ; _view ! : DataView ; set Buffer ( buffer ) { this . _buffer = buffer ; this . _view = new DataView ( this . _buffer . buffer ) ; } abstract read ( ) ; readD ( ) { const value = this . _view . getInt32 ( this . _offset , true ) ; this . _offset += 4 ; return value ; } readH ( ) { const value = this . _view . getUint16 ( this . _offset , true ) ; this . _offset += 2 ; return value ; } readC ( ) { const value = this . _view . getUint8 ( this . _offset ) ; this . _offset += 1 ; return value ; } readF ( ) { const value = this . _view . getFloat64 ( this . _offset , true ) ; this . _offset += 8 ; return value ; } readQ ( ) { const lo = this . _view . getUint32 ( this . _offset , true ) ; const hi = this . _view . getUint32 ( this . _offset + 4 , true ) ; this . _offset += 8 ; return lo + this . pow2 ( 32 ) * hi ; } readS ( ) { let result = "" ; for ( let i = this . _offset ; i < this . _buffer . byteLength - 1 ; i += 2 ) { const c = this . _view . getUint16 ( i , true ) ; this . _offset += 2 ; if ( c === 0 ) break ; result += String . fromCharCode ( c ) ; } return result ; } readB ( length ) { const value = this . _buffer . slice ( this . _offset , this . _offset + length ) ; this . _offset += length ; return Uint8Array . from ( value ) ; } readLoc ( ) { return [ this . readD ( ) , this . readD ( ) , this . readD ( ) ] ; } }