xchess/lib/state-handler.js

Chess Engine

export {StateHandler}

class StateHandler {

	#target;

	constructor(target){
		this.#target = target;
	}

	// State

	get game(){
		return this.#target.game;
	}

	get next(){
		const next = this.#target.next;
		if(next) return next.handler;
		return null;
	}

	get prev(){
		const prev = this.#target.prev;
		if(prev) return prev.handler;
		return null;
	}

	get isCurrent(){
		return this === this.#target.context.current;
	}

	// Config

	get time(){
		return this.#target.time;
	}

	get color(){
		return this.#target.color;
	}

	get count(){
		return this.#target.count;
	}

	get fullmoveNumber(){
		return this.#target.fullmoveNumber;
	}

	get halfmoveClock(){
		return this.#target.halfmoveClock;
	}

	get doubleMovePawn(){
		return this.#target.doubleMovePawn;
	}

	get enPassantTarget(){
		return this.#target.enPassantTarget;
	}

	get wk(){
		return this.#target.wk;
	}

	get wq(){
		return this.#target.wq;
	}

	get bk(){
		return this.#target.bk;
	}

	get bq(){
		return this.#target.bq;
	}

	get move(){
		return this.#target.lastMove;
	}

	get isCheck(){
		return this.#target.isCheck;
	}

	get checkKing(){
		return this.#target.checkKing;
	}

	get checkKingTarget(){
		return this.#target.checkKingTarget;
	}

	get hash(){
		return this.#target.hash;
	}

	get repetition(){
		return this.#target.repetition;
	}

	get ownRepetition(){
		return this.#target.ownRepetition;
	}

	get newRepetition(){
		return this.#target.newRepetition;
	}

	// Stat

	get status(){
		return this.#target.status;
	}

	get isProxy(){
		return this.#target.isProxy;
	}

	get isSetup(){
		return this.#target.isSetup;
	}

	get isMovement(){
		return this.#target.isMovement;
	}

	get isPromotion(){
		return this.#target.isPromotion;
	}

	get isDrawOffer(){
		return this.#target.isDrawOffer;
	}

	get isEnd(){
		return this.#target.isEnd;
	}

	get isWin(){
		return this.#target.isWin;
	}

	get isDraw(){
		return this.#target.isDraw;
	}

	get isImmediate(){
		return this.#target.isImmediate;
	}

	get isCheckmate(){
		return this.#target.isCheckmate;
	}

	get isStalemate(){
		return this.#target.isStalemate;
	}

	get winner(){
		return this.#target.winner;
	}

	get loser(){
		return this.#target.loser;
	}

	get subject(){
		return this.#target.subject;
	}

	get result(){
		return this.#target.result;
	}

	// I/O

	get fen(){
		return this.#target.fen;
	}

	// Log

	goto(){
		this.game.goto(this.count);
	}
}