Expr incDec() {
		Expr expr = staticMember();
		Tok tok = peek();
		if (tok.sym == Sym.INC || tok.sym == Sym.DEC) {
			move();
			return new IncDec(tok.sym, true, expr, location);
		}
		
		return expr;
	}
Expr incDec ( ) { Expr expr = staticMember ( ) ; Tok tok = peek ( ) ; if ( tok . sym == Sym . INC || tok . sym == Sym . DEC ) { move ( ) ; return new IncDec ( tok . sym , true , expr , location ) ; } return expr ; }
incDec : expr ('++' | '--')