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1 | - | class Container implements ContainerInterface { |
1 | + | class Container implements ArrayAccess { |
2 | ||
3 | /** | |
4 | * Container bindings | |
5 | * @var array | |
6 | */ | |
7 | protected $bindings = array(); | |
8 | ||
9 | /** | |
10 | * Container instances | |
11 | * @var array | |
12 | */ | |
13 | protected $instances = array(); | |
14 | ||
15 | /** | |
16 | * Container Closures | |
17 | * @var array | |
18 | */ | |
19 | protected $closures = array(); | |
20 | ||
21 | /** | |
22 | * Maximum depth of function makeClassWithParameters | |
23 | * @var int | |
24 | */ | |
25 | protected $maxdepth = 10; | |
26 | ||
27 | // ================================================== // | |
28 | ||
29 | /** | |
30 | * Public function to create new binding. | |
31 | * | |
32 | * @param string $key Binding name | |
33 | * @param mixed $value Object to store | |
34 | * @param bool $singleton Store as singleton? | |
35 | * @return void | |
36 | */ | |
37 | public function bind($key, $value, $singleton = false) | |
38 | { | |
39 | $this->clearBind($key); | |
40 | ||
41 | $this->makeBind($key, $value, (bool)$singleton); | |
42 | } | |
43 | ||
44 | /** | |
45 | * Function to get stored object or create new to store. | |
46 | * If there's no stored object it will create new instance of | |
47 | * class which name is $key | |
48 | * | |
49 | * @param string $key Binding name or class name | |
50 | * @param array $parameters Parameters for new class | |
51 | * @param bool $singleton Store new class as singleton? | |
52 | * @return mixed | |
53 | */ | |
54 | public function make($key, $parameters = array(), $singleton = false) | |
55 | { | |
56 | if($bind = $this->getBind($key)) | |
57 | { | |
58 | if(isset($bind['type']) and $bind['type'] == 'closure') | |
59 | { | |
60 | $instance = $this->closures[$key]; | |
61 | $instance = $instance(); | |
62 | ||
63 | if(isset($bind['singleton']) and $bind['singleton'] == true) | |
64 | { | |
65 | $this->clearBind($key); | |
66 | ||
67 | $this->makeBind($key, $instance, true); | |
68 | } | |
69 | ||
70 | return $instance; | |
71 | } | |
72 | elseif(isset($bind['type']) and $bind['type'] == 'instance') | |
73 | { | |
74 | return $this->instances[$key]; | |
75 | } | |
76 | ||
77 | $this->clearBind($key); | |
78 | return false; | |
79 | } | |
80 | else | |
81 | { | |
82 | $instance = $this->makeClassWithParameters($key, (array)$parameters); | |
83 | ||
84 | if($instance != false) | |
85 | { | |
86 | $this->bind($key, $instance); | |
87 | } | |
88 | ||
89 | return $instance; | |
90 | } | |
91 | } | |
92 | ||
93 | // ================================================== // | |
94 | ||
95 | /** | |
96 | * Creating new class with parameters. | |
97 | * If new class constructor require another class as parameter | |
98 | * it will be created, but max depth is limited! | |
99 | * | |
100 | * @throws OutOfBoundsException | |
101 | * @uses ReflectionClass | |
102 | * | |
103 | * @param string $name Class name | |
104 | * @param array $params Class parameters | |
105 | * @param int $depth Depth counter | |
106 | * @return mixed | |
107 | */ | |
108 | protected function makeClassWithParameters($name, array $params, $depth = 1) | |
109 | { | |
110 | if($depth >= $this->maxdepth) | |
111 | { | |
112 | throw new OutOfBoundsException('Maximum depth of makeClassWithParameters is '.$this->maxdepth); | |
113 | return false; | |
114 | } | |
115 | ||
116 | if(class_exists($name)) | |
117 | { | |
118 | $class = new ReflectionClass($name); | |
119 | ||
120 | $constructor = $class->getConstructor(); | |
121 | ||
122 | if(!is_null($constructor) and empty($params)) | |
123 | { | |
124 | foreach($constructor->getParameters() as $paramdata) | |
125 | { | |
126 | $classparam = $paramdata->getClass(); | |
127 | ||
128 | if(is_null($classparam)) | |
129 | { | |
130 | if($paramdata->isOptional()) | |
131 | { | |
132 | $params[] = $paramdata->getDefaultValue(); | |
133 | } | |
134 | else | |
135 | { | |
136 | $params[] = null; | |
137 | } | |
138 | } | |
139 | else | |
140 | { | |
141 | $params[] = $this->makeClassWithParameters($classparam->name, array(), $depth+1); | |
142 | } | |
143 | } | |
144 | } | |
145 | ||
146 | return $class->newInstanceArgs($params); | |
147 | } | |
148 | else | |
149 | { | |
150 | return false; | |
151 | } | |
152 | } | |
153 | ||
154 | /** | |
155 | * Getting bind if exist | |
156 | * | |
157 | * @return mixed | |
158 | */ | |
159 | protected function getBind($key) | |
160 | { | |
161 | return isset($this->bindings[$key]) ? $this->bindings[$key] : false; | |
162 | } | |
163 | ||
164 | /** | |
165 | * Protected function to create new binding. | |
166 | * | |
167 | * @param string $key Binding name | |
168 | * @param mixed $value Object to store | |
169 | * @param bool $singleton Store as singleton? | |
170 | * @return void | |
171 | */ | |
172 | protected function makeBind($key, $value, $singleton) | |
173 | { | |
174 | $bind = array(); | |
175 | ||
176 | if($value instanceof Closure) | |
177 | { | |
178 | $bind['type'] = 'closure'; | |
179 | $bind['singleton'] = (bool)$singleton; | |
180 | $this->closures[$key] = $value; | |
181 | } | |
182 | else | |
183 | { | |
184 | $bind['type'] = 'instance'; | |
185 | $this->instances[$key] = $value; | |
186 | } | |
187 | ||
188 | $this->bindings[$key] = $bind; | |
189 | } | |
190 | ||
191 | /** | |
192 | * Clear existing binding | |
193 | * | |
194 | * @param string $key Binding name | |
195 | * @return void | |
196 | */ | |
197 | protected function clearBind($key) | |
198 | { | |
199 | unset($this->bindings[$key], $this->instances[$key], $this->closures[$key]); | |
200 | } | |
201 | ||
202 | // ================================================== // | |
203 | ||
204 | /** | |
205 | * Getting container content as array | |
206 | * | |
207 | * @param string $key Binding name | |
208 | * @return mixed | |
209 | */ | |
210 | public function offsetGet($key) | |
211 | { | |
212 | return $this->make($key); | |
213 | } | |
214 | ||
215 | /** | |
216 | * Set container content as array | |
217 | * | |
218 | * @param string $key Binding name | |
219 | * @param mixed $value Object to store | |
220 | * @return void | |
221 | */ | |
222 | public function offsetSet($key, $value) | |
223 | { | |
224 | if(!($value instanceof Closure)) | |
225 | { | |
226 | $value = function() use ($value) { | |
227 | return $value; | |
228 | }; | |
229 | } | |
230 | ||
231 | $this->bind($key, $value, false); | |
232 | } | |
233 | ||
234 | /** | |
235 | * Checking binding as container array | |
236 | * | |
237 | * @param string $key Binding name | |
238 | * @return bool | |
239 | */ | |
240 | public function offsetExists($key) | |
241 | { | |
242 | return isset($this->bindings[$key]); | |
243 | } | |
244 | ||
245 | /** | |
246 | * Using function unset for container as array | |
247 | * | |
248 | * @param string $key Binding name | |
249 | * @return void | |
250 | */ | |
251 | public function offsetUnset($key) | |
252 | { | |
253 | $this->clearBind($key); | |
254 | } | |
255 | ||
256 | /** | |
257 | * Magic method __get | |
258 | * | |
259 | * @param string $key | |
260 | * @return mixed | |
261 | */ | |
262 | public function __get($key) | |
263 | { | |
264 | return $this[$key]; | |
265 | } | |
266 | ||
267 | /** | |
268 | * Magic method __set | |
269 | * | |
270 | * @param string $key | |
271 | * @param mixed $value | |
272 | * @return void | |
273 | */ | |
274 | public function __set($key, $value) | |
275 | { | |
276 | $this[$key] = $value; | |
277 | } | |
278 | ||
279 | } |