binaryop and equals diff about tengo HOT 1 OPEN

		case parser.OpEqual:
			right := v.stack[v.sp-1]
			left := v.stack[v.sp-2]
			v.sp -= 2
			if left.Equals(right) { //here use Equals func
				v.stack[v.sp] = TrueValue
			} else {
				v.stack[v.sp] = FalseValue
			}
			v.sp++

		case parser.OpBinaryOp:
			v.ip++
			right := v.stack[v.sp-1]
			left := v.stack[v.sp-2]
			tok := token.Token(v.curInsts[v.ip])
			res, e := left.BinaryOp(tok, right) //here use binaryop func
			if e != nil {
				v.sp -= 2
				if e == ErrInvalidOperator {
					v.err = fmt.Errorf("invalid operation: %s %s %s",
						left.TypeName(), tok.String(), right.TypeName())
					return
				}
				v.err = e
				return
			}

			v.allocs--
			if v.allocs == 0 {
				v.err = ErrObjectAllocLimit
				return
			}

			v.stack[v.sp-2] = res
			v.sp--