1 | <?php |
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11 | trait HasParserTrait |
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12 | { |
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13 | protected $parser = null; |
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14 | |||
15 | |||
16 | /** |
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17 | * @return AbstractParser |
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18 | */ |
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19 | 1 | public function getParser() |
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20 | { |
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21 | 1 | if ($this->parser === null) { |
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22 | 1 | $this->initParser(); |
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23 | } |
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24 | |||
25 | return $this->parser; |
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26 | } |
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27 | |||
28 | /** |
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29 | * @param $class |
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30 | * @return $this |
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31 | */ |
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32 | public function setParser($class) |
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33 | { |
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34 | $this->parser = $class; |
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35 | |||
36 | return $this; |
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37 | } |
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38 | |||
39 | 1 | public function initParser() |
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40 | { |
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41 | 1 | $class = $this->getParserClass(); |
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42 | $parser = new $class; |
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43 | $this->setParser($parser); |
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44 | } |
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45 | |||
46 | /** |
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47 | * @return string |
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48 | */ |
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49 | 1 | public function getParserClass() |
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53 | } |
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54 |
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.