1 | <?php |
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2 | /* |
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3 | * @copyright (c) 2018 Mendel <[email protected]> |
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4 | * @license see license.txt |
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5 | */ |
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6 | namespace drycart\di; |
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7 | |||
8 | /** |
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9 | * Prepare parameters for call, using reflection |
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10 | * @see: AbstractCoreContainer |
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11 | * @author Mendel <[email protected]> |
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12 | */ |
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13 | abstract class AbstractParametersContainer |
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14 | { |
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15 | /** |
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16 | * Contain array of callable for try transform parameters |
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17 | * @var array |
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18 | */ |
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19 | protected $transformers = []; |
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20 | |||
21 | /** |
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22 | * Prepare parameters using parameters array |
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23 | * @param array $dependency |
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24 | * @param array $parameters |
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25 | * @return array |
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26 | */ |
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27 | protected function prepareParameters(array $dependency, array $parameters) : array |
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28 | { |
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29 | $preparedParameters = []; |
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30 | foreach ($dependency as $paramReflector) { |
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31 | $name = $paramReflector->name; |
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32 | $type = $paramReflector->getType(); |
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33 | if (isset($parameters[$name])) { |
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34 | $value = $parameters[$name]; |
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35 | $preparedParameters[] = $this->prepareValue($type, $value); |
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36 | } else { |
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37 | $preparedParameters[] = $this->getParameter($paramReflector); |
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38 | } |
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39 | } |
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40 | return $preparedParameters; |
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41 | } |
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42 | |||
43 | private function prepareValue($type, $value) |
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44 | { |
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45 | if (empty($type) or $type->isBuiltIn() or is_a($value, $type->getName())) { |
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46 | return $value; |
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47 | } elseif (is_array($value)) { |
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48 | $className = $value['#class'] ?? $type->getName(); |
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49 | return $this->make($className, $value); |
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50 | } else { |
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51 | return $this->tryTransformValue($type->getName(), $value); |
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52 | } |
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53 | } |
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54 | |||
55 | /** |
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56 | * Try get parameter - from container or default |
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57 | * @param \ReflectionParameter $param |
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58 | * @return mixed |
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59 | */ |
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60 | private function getParameter(\ReflectionParameter $param) |
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61 | { |
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62 | $type = $param->getType(); |
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63 | if (!empty($type) and !$type->isBuiltIn()) { |
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64 | return $this->get($type->getName()); |
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65 | } elseif ($param->isDefaultValueAvailable()) { |
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66 | return $param->getDefaultValue(); |
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67 | }elseif ($type->allowsNull()) { |
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68 | return null; |
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69 | } else { |
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70 | throw new ContainerException('Unknown parameter '.$param->name); |
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71 | } |
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72 | } |
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73 | |||
74 | private function tryTransformValue(string $className, $value) |
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75 | { |
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76 | foreach ($this->transformers as $transformer) { |
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77 | $value = $transformer($value, $className, $this); |
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78 | if (is_a($value, $className)) { |
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79 | return $value; |
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80 | } |
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81 | } |
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82 | throw new ContainerException('Wrong type of value for parameter. Need: '.$className); |
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83 | } |
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84 | |||
85 | /** |
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86 | * Finds an entry of the container by its identifier and returns it. |
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87 | * |
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88 | * @param string $id class name |
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89 | * |
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90 | * @throws NotFoundException No entry was found for **this** identifier. |
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91 | * @throws ContainerException Error while retrieving the entry. |
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92 | * |
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93 | * @return mixed |
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94 | */ |
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95 | abstract public function get($id); |
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96 | |||
97 | /** |
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98 | * Create new object |
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99 | * @param string $id class name |
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100 | * @param array $parameters parameters from request |
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101 | * @return mixed |
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102 | * @throws ContainerException |
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103 | */ |
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104 | abstract public function make(string $id, array $parameters = []); |
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105 | } |