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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <dev@noladev.com> |
| 8 | * @copyright Copyright (c) 2009-2027 NOLA Interactive, LLC. |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Code\Generator\Traits; |
| 16 | |
| 17 | use Pop\Code\Generator\DocblockGenerator; |
| 18 | use Pop\Code\Generator\Exception; |
| 19 | use Pop\Code\Generator\NoValue; |
| 20 | use Pop\Code\Generator\Support\ValueFormatter; |
| 21 | |
| 22 | /** |
| 23 | * Function trait |
| 24 | * |
| 25 | * @category Pop |
| 26 | * @package Pop\Code |
| 27 | * @author Nick Sagona, III <dev@noladev.com> |
| 28 | * @copyright Copyright (c) 2009-2027 NOLA Interactive, LLC. |
| 29 | * @license https://www.popphp.org/license New BSD License |
| 30 | * @version 6.0.0 |
| 31 | */ |
| 32 | trait FunctionTrait |
| 33 | { |
| 34 | |
| 35 | /** |
| 36 | * Arguments |
| 37 | * @var array |
| 38 | */ |
| 39 | protected array $arguments = []; |
| 40 | |
| 41 | /** |
| 42 | * Return Types |
| 43 | * @var array |
| 44 | */ |
| 45 | protected array $returnTypes = []; |
| 46 | |
| 47 | /** |
| 48 | * Add an argument |
| 49 | * |
| 50 | * @param string $name |
| 51 | * @param mixed $value |
| 52 | * @param ?string $type |
| 53 | * @param bool $variadic |
| 54 | * @param bool $byRef |
| 55 | * @param array $attributes |
| 56 | * @throws Exception |
| 57 | * @return static |
| 58 | */ |
| 59 | public function addArgument( |
| 60 | string $name, mixed $value = new NoValue(), ?string $type = null, bool $variadic = false, bool $byRef = false, |
| 61 | array $attributes = [] |
| 62 | ): static |
| 63 | { |
| 64 | if ($variadic && !($value instanceof NoValue)) { |
| 65 | throw new Exception('Error: A variadic argument cannot have a default value.'); |
| 66 | } |
| 67 | |
| 68 | $this->arguments[$name] = [ |
| 69 | 'value' => $value, 'type' => $type, 'variadic' => $variadic, 'byRef' => $byRef, 'attributes' => $attributes |
| 70 | ]; |
| 71 | |
| 72 | if ($this->docblock === null) { |
| 73 | $this->docblock = new DocblockGenerator(null, $this->indent); |
| 74 | } |
| 75 | |
| 76 | $docName = $name; |
| 77 | if (!str_starts_with($docName, '$')) { |
| 78 | $docName = '$' . $docName; |
| 79 | } |
| 80 | $docType = $type; |
| 81 | if (!empty($docType) && !str_starts_with($docType, '?') && ($docType !== 'mixed') && ($value === null) |
| 82 | && !in_array('null', explode('|', $docType), true) |
| 83 | ) { |
| 84 | $docType = str_contains($docType, '&') ? '(' . $docType . ')|null' : $docType . '|null'; |
| 85 | } |
| 86 | // A caller re-adding an argument for a name that already exists (e.g. to change its |
| 87 | // type) leaves a stale @param entry behind otherwise -- $this->arguments is name-keyed |
| 88 | // and correctly overwrites, but the docblock's params are append-only. This also covers |
| 89 | // MethodReflection/FunctionReflection's own flow: they set a fully-parsed docblock |
| 90 | // (which may carry a hand-written per-param description from the real source) *before* |
| 91 | // calling addArgument() for each parameter -- preserve that description across the |
| 92 | // remove+re-add rather than silently dropping it, since addArgument() itself has no way |
| 93 | // to be told a description directly. |
| 94 | $existingParam = $this->docblock->findParam($docName); |
| 95 | $docDesc = $existingParam['desc'] ?? null; |
| 96 | $this->docblock->removeParam($docName); |
| 97 | $this->docblock->addParam($docType, $docName, $docDesc); |
| 98 | |
| 99 | return $this; |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Add arguments |
| 104 | * |
| 105 | * @param array $args each element shaped ['name' => string, 'value' => mixed, 'type' => ?string, |
| 106 | * 'variadic' => bool, 'byRef' => bool, 'attributes' => array] |
| 107 | * @throws Exception |
| 108 | * @return static |
| 109 | */ |
| 110 | public function addArguments(array $args): static |
| 111 | { |
| 112 | foreach ($args as $arg) { |
| 113 | if (!isset($arg['name'])) { |
| 114 | throw new Exception("Error: The 'name' key was not set."); |
| 115 | } |
| 116 | $value = array_key_exists('value', $arg) ? $arg['value'] : new NoValue(); |
| 117 | $type = $arg['type'] ?? null; |
| 118 | $variadic = $arg['variadic'] ?? false; |
| 119 | $byRef = $arg['byRef'] ?? false; |
| 120 | $attributes = $arg['attributes'] ?? []; |
| 121 | $this->addArgument($arg['name'], $value, $type, $variadic, $byRef, $attributes); |
| 122 | } |
| 123 | return $this; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Has an argument |
| 128 | * |
| 129 | * @param string $name |
| 130 | * @return bool |
| 131 | */ |
| 132 | public function hasArgument(string $name): bool |
| 133 | { |
| 134 | return isset($this->arguments[$name]); |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Has arguments |
| 139 | * |
| 140 | * @return bool |
| 141 | */ |
| 142 | public function hasArguments(): bool |
| 143 | { |
| 144 | return !empty($this->arguments); |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Get an argument |
| 149 | * |
| 150 | * @param string $name |
| 151 | * @return array|null |
| 152 | */ |
| 153 | public function getArgument(string $name): array|null |
| 154 | { |
| 155 | return $this->arguments[$name] ?? null; |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Get the arguments |
| 160 | * |
| 161 | * @return array |
| 162 | */ |
| 163 | public function getArguments(): array |
| 164 | { |
| 165 | return $this->arguments; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Add an argument (alias method for convenience) |
| 170 | * |
| 171 | * @param string $name |
| 172 | * @param mixed $value |
| 173 | * @param ?string $type |
| 174 | * @param bool $variadic |
| 175 | * @param bool $byRef |
| 176 | * @param array $attributes |
| 177 | * @throws Exception |
| 178 | * @return static |
| 179 | */ |
| 180 | public function addParameter( |
| 181 | string $name, mixed $value = new NoValue(), ?string $type = null, bool $variadic = false, bool $byRef = false, |
| 182 | array $attributes = [] |
| 183 | ): static |
| 184 | { |
| 185 | $this->addArgument($name, $value, $type, $variadic, $byRef, $attributes); |
| 186 | return $this; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Add arguments (alias method for convenience) |
| 191 | * |
| 192 | * @param array $args |
| 193 | * @return static |
| 194 | */ |
| 195 | public function addParameters(array $args): static |
| 196 | { |
| 197 | $this->addArguments($args); |
| 198 | return $this; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Has an argument (alias method for convenience) |
| 203 | * |
| 204 | * @param string $name |
| 205 | * @return bool |
| 206 | */ |
| 207 | public function hasParameter(string $name): bool |
| 208 | { |
| 209 | return $this->hasArgument($name); |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Has arguments (alias method for convenience) |
| 214 | * |
| 215 | * @return bool |
| 216 | */ |
| 217 | public function hasParameters(): bool |
| 218 | { |
| 219 | return $this->hasArguments(); |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * Get an argument (alias method for convenience) |
| 224 | * |
| 225 | * @param string $name |
| 226 | * @return array|null |
| 227 | */ |
| 228 | public function getParameter(string $name): array|null |
| 229 | { |
| 230 | return $this->getArgument($name); |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * Get the arguments (alias method for convenience) |
| 235 | * |
| 236 | * @return array |
| 237 | */ |
| 238 | public function getParameters(): array |
| 239 | { |
| 240 | return $this->getArguments(); |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Add a return type |
| 245 | * |
| 246 | * @param string $type |
| 247 | * @return static |
| 248 | */ |
| 249 | public function addReturnType(string $type): static |
| 250 | { |
| 251 | $this->returnTypes[] = $type; |
| 252 | |
| 253 | if ($this->docblock === null) { |
| 254 | $this->docblock = new DocblockGenerator(null, $this->indent); |
| 255 | } |
| 256 | |
| 257 | // Preserve an existing @return description (e.g. one already parsed from a real source |
| 258 | // docblock by MethodReflection/FunctionReflection before this is called) -- setReturn() |
| 259 | // always resets the description to null when not given one explicitly, which silently |
| 260 | // discarded it otherwise. |
| 261 | $existingReturn = $this->docblock->getReturn(); |
| 262 | $returnDesc = $existingReturn['desc'] ?? null; |
| 263 | $this->docblock->setReturn(implode('|', $this->returnTypes), $returnDesc); |
| 264 | |
| 265 | return $this; |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Add return types |
| 270 | * |
| 271 | * @param array $types |
| 272 | * @return static |
| 273 | */ |
| 274 | public function addReturnTypes(array $types): static |
| 275 | { |
| 276 | foreach ($types as $type) { |
| 277 | $this->addReturnType($type); |
| 278 | } |
| 279 | return $this; |
| 280 | } |
| 281 | |
| 282 | /** |
| 283 | * Has return type |
| 284 | * |
| 285 | * @param string $type |
| 286 | * @return bool |
| 287 | */ |
| 288 | public function hasReturnType(string $type): bool |
| 289 | { |
| 290 | return in_array($type, $this->returnTypes); |
| 291 | } |
| 292 | |
| 293 | /** |
| 294 | * Has return types |
| 295 | * |
| 296 | * @return bool |
| 297 | */ |
| 298 | public function hasReturnTypes(): bool |
| 299 | { |
| 300 | return !empty($this->returnTypes); |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * Get the return types |
| 305 | * |
| 306 | * @return array |
| 307 | */ |
| 308 | public function getReturnTypes(): array |
| 309 | { |
| 310 | return $this->returnTypes; |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * Format the arguments |
| 315 | * |
| 316 | * @return string|null |
| 317 | */ |
| 318 | protected function formatArguments(): string|null |
| 319 | { |
| 320 | $args = null; |
| 321 | |
| 322 | $i = 0; |
| 323 | foreach ($this->arguments as $name => $arg) { |
| 324 | $i++; |
| 325 | |
| 326 | if (!empty($arg['attributes'])) { |
| 327 | $attrs = []; |
| 328 | foreach ($arg['attributes'] as $attribute) { |
| 329 | $attrs[] = $attribute->render(); |
| 330 | } |
| 331 | $args .= implode(' ', $attrs) . ' '; |
| 332 | } |
| 333 | |
| 334 | $promoted = null; |
| 335 | if (!empty($arg['promotedVisibility'])) { |
| 336 | $promoted = $arg['promotedVisibility'] . ' ' . (!empty($arg['promotedReadonly']) ? 'readonly ' : ''); |
| 337 | } |
| 338 | |
| 339 | if ($arg['type'] !== null) { |
| 340 | $type = $arg['type']; |
| 341 | if (!empty($type) && !str_starts_with($type, '?') && ($type !== 'mixed') && ($arg['value'] === null) |
| 342 | && !in_array('null', explode('|', $type), true) |
| 343 | ) { |
| 344 | // An intersection type (`Countable&Traversable`) needs parens before |
| 345 | // combining with `|null` -- PHP requires DNF syntax `(A&B)|null`. |
| 346 | $type = str_contains($type, '&') ? '(' . $type . ')|null' : $type . '|null'; |
| 347 | } |
| 348 | $args .= $promoted . $type . ' '; |
| 349 | } else { |
| 350 | $args .= $promoted; |
| 351 | } |
| 352 | |
| 353 | $args .= (!empty($arg['byRef']) ? '&' : '') . (!empty($arg['variadic']) ? '...' : ''); |
| 354 | $args .= (substr($name, 0, 1) != '$') ? "\$" . $name : $name; |
| 355 | |
| 356 | if (!($arg['value'] instanceof NoValue)) { |
| 357 | $args .= ' = ' . ValueFormatter::format($arg['value'], $arg['type']); |
| 358 | } |
| 359 | |
| 360 | if ($i < count($this->arguments)) { |
| 361 | $args .= ', '; |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | return $args; |
| 366 | } |
| 367 | |
| 368 | } |