public final function execute(OperandStack $values)
{
$rhs = $values->peek();
$values->pop();
$lhs = $values->peek();
$result = $this->executeImplementation($lhs, $rhs);
$values->replaceTop($result);
}
public function execute(OperandStack $values)
{
$operand = $values->peek();
$result = 1;
while ($operand > 0) {
$result *= $operand;
$operand -= 1;
}
$values->replaceTop($result);
}
public function testShouldBeAbleToDivide()
{
$pushvalue = 12;
$pushvalue2 = 2;
$stack = new OperandStack();
$stack->push($pushvalue);
$stack->push($pushvalue2);
$op = new Divide();
$op->execute($stack);
$this->assertEquals(6, $stack->peek());
}
public function testCanMultiplyTwoNumbers()
{
$pushvalue = 3;
$pushvalue2 = 7;
$stack = new OperandStack();
$stack->push($pushvalue);
$stack->push($pushvalue2);
$op = new Multiply();
$op->execute($stack);
$this->assertEquals(21, $stack->peek());
}
