Total Complexity | 52 |
Total Lines | 302 |
Duplicated Lines | 0 % |
Changes | 0 |
Complex classes like Sequenceable often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Sequenceable, and based on these observations, apply Extract Interface, too.
1 | <?php namespace Mbh\Collection\Traits; |
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32 | trait Sequenceable |
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33 | { |
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34 | protected $sfa = null; |
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35 | |||
36 | /** |
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37 | * Create an fixed array |
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38 | * |
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39 | * @param Traversable $array data |
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40 | */ |
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41 | protected function __construct(Traversable $array) |
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44 | } |
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45 | |||
46 | /** |
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47 | * @inheritDoc |
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48 | */ |
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49 | public static function fromArray(array $array) |
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52 | } |
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53 | |||
54 | /** |
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55 | * @inheritDoc |
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56 | */ |
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57 | public static function fromItems(Traversable $array) |
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58 | { |
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59 | if (!$array instanceof Countable) { |
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60 | return static::fromArray(iterator_to_array($array)); |
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61 | } |
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62 | |||
63 | $sfa = new SplFixedArray(count($array)); |
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64 | |||
65 | foreach ($array as $i => $elem) { |
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66 | $sfa[$i] = $elem; |
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67 | } |
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68 | |||
69 | return new static($sfa); |
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70 | } |
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71 | |||
72 | /** |
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73 | * @inheritDoc |
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74 | */ |
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75 | public function contains(...$values): bool |
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76 | { |
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77 | foreach ($values as $value) { |
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78 | if ($this->search($value) !== null) { |
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79 | return false; |
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80 | } |
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81 | } |
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82 | |||
83 | return true; |
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84 | } |
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85 | |||
86 | /** |
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87 | * @inheritDoc |
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88 | */ |
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89 | public function copy() |
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90 | { |
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91 | return static::fromArray($this->toArray()); |
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92 | } |
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93 | |||
94 | /** |
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95 | * @inheritDoc |
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96 | */ |
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97 | public function first() |
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98 | { |
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99 | if ($this->isEmpty()) { |
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100 | throw new UnderflowException(); |
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101 | } |
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102 | |||
103 | return $this[0]; |
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104 | } |
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105 | |||
106 | /** |
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107 | * @inheritDoc |
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108 | */ |
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109 | public function get(int $index) |
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110 | { |
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111 | if (!$this->validIndex($index)) { |
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112 | throw new OutOfRangeException(); |
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113 | } |
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114 | |||
115 | return $this[$index]; |
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116 | } |
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117 | |||
118 | /** |
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119 | * @inheritDoc |
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120 | */ |
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121 | public function insert(int $index, ...$values) |
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131 | } |
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132 | |||
133 | /** |
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134 | * @inheritDoc |
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135 | */ |
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136 | public function last() |
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137 | { |
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138 | if ($this->isEmpty()) { |
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139 | throw new UnderflowException(); |
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140 | } |
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141 | |||
142 | return $this[$this->count() - 1]; |
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143 | } |
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144 | |||
145 | /** |
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146 | * @inheritDoc |
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147 | */ |
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148 | public function pop() |
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149 | { |
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150 | if ($this->isEmpty()) { |
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151 | throw new UnderflowException(); |
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152 | } |
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153 | |||
154 | $value = $this->last(); |
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155 | unset($this[$this->count() - 1]); |
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156 | |||
157 | $this->checkCapacity(); |
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158 | |||
159 | return $value; |
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160 | } |
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161 | |||
162 | /** |
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163 | * Pushes all values of either an array or traversable object. |
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164 | */ |
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165 | private function pushAll(...$args) |
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166 | { |
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167 | $size = $this->getSize(); |
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168 | |||
169 | foreach ($args as &$values) { |
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170 | foreach ($values as $value) { |
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171 | $this->setSize(++$size); |
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172 | $this[$size - 1] = $value; |
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173 | } |
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174 | } |
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175 | |||
176 | $this->checkCapacity(); |
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177 | } |
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178 | |||
179 | /** |
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180 | * @inheritDoc |
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181 | */ |
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182 | public function push(...$values) |
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185 | } |
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186 | |||
187 | /** |
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188 | * @inheritDoc |
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189 | */ |
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190 | public function remove(int $index) |
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191 | { |
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192 | if (! $this->validIndex($index)) { |
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193 | throw new OutOfRangeException(); |
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194 | } |
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195 | $value = array_splice($this->array, $index, 1, null)[0]; |
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196 | $this->checkCapacity(); |
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197 | return $value; |
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198 | } |
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199 | |||
200 | /** |
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201 | * @inheritDoc |
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202 | */ |
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203 | public function set(int $index, $value) |
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204 | { |
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205 | if (! $this->validIndex($index)) { |
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206 | throw new OutOfRangeException(); |
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207 | } |
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208 | |||
209 | $this->sfa->offsetSet($index, $value); |
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210 | } |
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211 | |||
212 | public function toArray(): array |
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213 | { |
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214 | return $this->sfa->toArray(); |
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215 | } |
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216 | |||
217 | protected function validIndex(int $index) |
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218 | { |
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219 | return $index >= 0 && $index < $this->getSize(); |
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220 | } |
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221 | |||
222 | /** |
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223 | * Countable |
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224 | */ |
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225 | public function count(): int |
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226 | { |
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227 | return count($this->sfa); |
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228 | } |
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229 | |||
230 | /** |
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231 | * Iterator |
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232 | */ |
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233 | public function current() |
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234 | { |
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235 | return $this->sfa->current(); |
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236 | } |
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237 | |||
238 | public function key(): int |
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239 | { |
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240 | return $this->sfa->key(); |
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241 | } |
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242 | |||
243 | public function next() |
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244 | { |
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245 | return $this->sfa->next(); |
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246 | } |
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247 | |||
248 | public function rewind() |
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249 | { |
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250 | return $this->sfa->rewind(); |
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251 | } |
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252 | |||
253 | public function valid() |
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254 | { |
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255 | return $this->sfa->valid(); |
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256 | } |
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257 | |||
258 | /** |
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259 | * ArrayAccess |
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260 | */ |
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261 | public function offsetExists($offset): bool |
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262 | { |
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263 | return is_integer($offset) |
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264 | && $this->validIndex($offset) |
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265 | && $this->sfa->offsetExists($offset); |
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266 | } |
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267 | |||
268 | public function offsetGet($offset) |
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269 | { |
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270 | return $this->sfa->offsetGet($offset); |
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271 | } |
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272 | |||
273 | public function offsetSet($offset, $value) |
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274 | { |
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275 | if ($offset === null) { |
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276 | $this->push($value); |
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277 | } elseif (is_integer($offset)) { |
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278 | $this->set($offset, $value); |
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279 | } |
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280 | } |
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281 | |||
282 | public function offsetUnset($offset) |
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283 | { |
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284 | return is_integer($offset) |
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285 | && $this->validIndex($offset) |
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286 | && $this->sfa->offsetUnset($offset); |
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287 | } |
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288 | |||
289 | public function clear() |
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292 | } |
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293 | |||
294 | protected function getMainTraversable(): Traversable |
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295 | { |
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296 | return $this->sfa; |
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297 | } |
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298 | |||
299 | protected function setTraversable(Traversable $traversable) |
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302 | } |
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303 | |||
304 | /** |
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305 | * Gets the size of the array. |
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306 | * |
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307 | * @return int |
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308 | */ |
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309 | protected function getSize(): int |
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312 | } |
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313 | |||
314 | /** |
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315 | * Change the size of an array to the new size of size. |
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316 | * If size is less than the current array size, any values after the |
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317 | * new size will be discarded. If size is greater than the current |
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318 | * array size, the array will be padded with NULL values. |
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319 | * |
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320 | * @param int $size The new array size. This should be a value between 0 |
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321 | * and PHP_INT_MAX. |
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322 | * @return bool Returns TRUE on success or FALSE on failure. |
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323 | */ |
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324 | protected function setSize(int $size): bool |
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327 | } |
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328 | |||
329 | abstract protected function checkCapacity(); |
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330 | |||
331 | abstract public function isEmpty(): bool; |
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332 | |||
333 | abstract public function search($value); |
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334 | } |
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335 |