CondParse\OperandStack

Complexity

Total Complexity

7

Size/Duplication

Total Lines	44
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	2
A	push()	0	4	1
A	pop()	0	4	1
A	top()	0	6	2
A	isEmpty()	0	4	1

<?php


namespace CondParse;


class OperandStack
{
    /** @var \SplStack */
    private $stack;

    public function __construct(\SplStack $storage = null)
    {
        $this->stack = $storage ?: new \SplStack();
    }

    /**
     * @param OperandInterface $operand
     */
    public function push(OperandInterface $operand)
    {
        $this->stack->push($operand);
    }

    /**
     * @return OperandInterface
     */
    public function pop()
    {
        return $this->stack->pop();
    }

    /**
     * @return OperandInterface|null
     */
    public function top()
    {
        return $this->isEmpty()
            ? null
            : $this->stack->top();
    }

    /**
     * @return bool
     */
    public function isEmpty()
    {
        return $this->stack->isEmpty();
    }
}