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DefinitionDecorator.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\DependencyInjection;
013
014 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
015 use Symfony\Component\DependencyInjection\Exception\OutOfBoundsException;
016
017 /**
018 * This definition decorates another definition.
019 *
020 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
021 *
022 * @api
023 */
024 class DefinitionDecorator extends Definition
025 {
026 private $parent;
027 private $changes;
028
029 /**
030 * Constructor.
031 *
032 * @param string $parent The id of Definition instance to decorate.
033 *
034 * @api
035 */
036 public function __construct($parent)
037 {
038 parent::__construct();
039
040 $this->parent = $parent;
041 $this->changes = array();
042 }
043
044 /**
045 * Returns the Definition being decorated.
046 *
047 * @return string
048 *
049 * @api
050 */
051 public function getParent()
052 {
053 return $this->parent;
054 }
055
056 /**
057 * Returns all changes tracked for the Definition object.
058 *
059 * @return array An array of changes for this Definition
060 *
061 * @api
062 */
063 public function getChanges()
064 {
065 return $this->changes;
066 }
067
068 /**
069 * {@inheritdoc}
070 *
071 * @api
072 */
073 public function setClass($class)
074 {
075 $this->changes['class'] = true;
076
077 return parent::setClass($class);
078 }
079
080 /**
081 * {@inheritdoc}
082 *
083 * @api
084 */
085 public function setFactoryClass($class)
086 {
087 $this->changes['factory_class'] = true;
088
089 return parent::setFactoryClass($class);
090 }
091
092 /**
093 * {@inheritdoc}
094 *
095 * @api
096 */
097 public function setFactoryMethod($method)
098 {
099 $this->changes['factory_method'] = true;
100
101 return parent::setFactoryMethod($method);
102 }
103
104 /**
105 * {@inheritdoc}
106 *
107 * @api
108 */
109 public function setFactoryService($service)
110 {
111 $this->changes['factory_service'] = true;
112
113 return parent::setFactoryService($service);
114 }
115
116 /**
117 * {@inheritdoc}
118 *
119 * @api
120 */
121 public function setConfigurator($callable)
122 {
123 $this->changes['configurator'] = true;
124
125 return parent::setConfigurator($callable);
126 }
127
128 /**
129 * {@inheritdoc}
130 *
131 * @api
132 */
133 public function setFile($file)
134 {
135 $this->changes['file'] = true;
136
137 return parent::setFile($file);
138 }
139
140 /**
141 * {@inheritdoc}
142 *
143 * @api
144 */
145 public function setPublic($boolean)
146 {
147 $this->changes['public'] = true;
148
149 return parent::setPublic($boolean);
150 }
151
152 /**
153 * {@inheritdoc}
154 *
155 * @api
156 */
157 public function setLazy($boolean)
158 {
159 $this->changes['lazy'] = true;
160
161 return parent::setLazy($boolean);
162 }
163
164 /**
165 * Gets an argument to pass to the service constructor/factory method.
166 *
167 * If replaceArgument() has been used to replace an argument, this method
168 * will return the replacement value.
169 *
170 * @param int $index
171 *
172 * @return mixed The argument value
173 *
174 * @throws OutOfBoundsException When the argument does not exist
175 *
176 * @api
177 */
178 public function getArgument($index)
179 {
180 if (array_key_exists('index_'.$index, $this->arguments)) {
181 return $this->arguments['index_'.$index];
182 }
183
184 $lastIndex = count(array_filter(array_keys($this->arguments), 'is_int')) - 1;
185
186 if ($index < 0 || $index > $lastIndex) {
187 throw new OutOfBoundsException(sprintf('The index "%d" is not in the range [0, %d].', $index, $lastIndex));
188 }
189
190 return $this->arguments[$index];
191 }
192
193 /**
194 * You should always use this method when overwriting existing arguments
195 * of the parent definition.
196 *
197 * If you directly call setArguments() keep in mind that you must follow
198 * certain conventions when you want to overwrite the arguments of the
199 * parent definition, otherwise your arguments will only be appended.
200 *
201 * @param int $index
202 * @param mixed $value
203 *
204 * @return DefinitionDecorator the current instance
205 * @throws InvalidArgumentException when $index isn't an integer
206 *
207 * @api
208 */
209 public function replaceArgument($index, $value)
210 {
211 if (!is_int($index)) {
212 throw new InvalidArgumentException('$index must be an integer.');
213 }
214
215 $this->arguments['index_'.$index] = $value;
216
217 return $this;
218 }
219 }
220