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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\DependencyInjection\Compiler;
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13
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14 /**
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15 * Represents an edge in your service graph.
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16 *
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17 * Value is typically a reference.
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18 *
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19 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
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20 */
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21 class ServiceReferenceGraphEdge
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22 {
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23 private $sourceNode;
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24 private $destNode;
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25 private $value;
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26 private $lazy;
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27 private $weak;
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28 private $byConstructor;
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29
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30 /**
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31 * @param ServiceReferenceGraphNode $sourceNode
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32 * @param ServiceReferenceGraphNode $destNode
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33 * @param mixed $value
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34 * @param bool $lazy
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35 * @param bool $weak
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36 * @param bool $byConstructor
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37 */
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38 public function __construct(ServiceReferenceGraphNode $sourceNode, ServiceReferenceGraphNode $destNode, $value = null, $lazy = false, $weak = false, $byConstructor = false)
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39 {
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40 $this->sourceNode = $sourceNode;
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41 $this->destNode = $destNode;
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42 $this->value = $value;
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43 $this->lazy = $lazy;
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44 $this->weak = $weak;
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45 $this->byConstructor = $byConstructor;
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46 }
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47
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48 /**
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49 * Returns the value of the edge.
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50 *
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51 * @return string
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52 */
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53 public function getValue()
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54 {
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55 return $this->value;
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56 }
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57
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58 /**
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59 * Returns the source node.
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60 *
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61 * @return ServiceReferenceGraphNode
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62 */
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63 public function getSourceNode()
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64 {
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65 return $this->sourceNode;
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66 }
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67
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68 /**
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69 * Returns the destination node.
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70 *
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71 * @return ServiceReferenceGraphNode
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72 */
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73 public function getDestNode()
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74 {
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75 return $this->destNode;
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76 }
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77
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78 /**
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79 * Returns true if the edge is lazy, meaning it's a dependency not requiring direct instantiation.
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80 *
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81 * @return bool
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82 */
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83 public function isLazy()
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84 {
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85 return $this->lazy;
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86 }
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87
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88 /**
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89 * Returns true if the edge is weak, meaning it shouldn't prevent removing the target service.
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90 *
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91 * @return bool
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92 */
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93 public function isWeak()
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94 {
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95 return $this->weak;
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96 }
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97
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98 /**
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99 * Returns true if the edge links with a constructor argument.
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100 *
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101 * @return bool
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102 */
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103 public function isReferencedByConstructor()
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104 {
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105 return $this->byConstructor;
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106 }
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107 }
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