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<?php |
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/** |
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* This file is part of the sj-i/php-profiler package. |
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* |
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* (c) sji <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace PhpProfiler\Lib\Process\Pointer; |
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use FFI\CData; |
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use FFI\CInteger; |
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use FFI\CPointer; |
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use FFI\CType; |
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use PhpProfiler\Lib\PhpInternals\CastedCData; |
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/** |
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* @template T of \PhpProfiler\Lib\Process\Pointer\Dereferencable |
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*/ |
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class Pointer |
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{ |
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/** @param class-string<T> $type */ |
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public function __construct( |
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public string $type, |
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public int $address, |
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public int $size, |
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) { |
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} |
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public function indexedAt(int $n): Pointer |
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{ |
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return new Pointer( |
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$this->type, |
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$this->address + $n * $this->size, |
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$this->size, |
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); |
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} |
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public function getCTypeName(): string |
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{ |
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return $this->type::getCTypeName(); |
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} |
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/** |
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* @param CastedCData<CData> $casted_cdata |
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* @param Pointer<T> $pointer |
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* @return T |
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*/ |
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public function fromCastedCData( |
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CastedCData $casted_cdata, |
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Pointer $pointer |
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): mixed { |
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return $this->type::fromCastedCData($casted_cdata, $pointer); |
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} |
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/** |
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* @template TType of \PhpProfiler\Lib\Process\Pointer\Dereferencable |
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* @param class-string<TType> $type |
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* @param CPointer $c_pointer |
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* @return Pointer<TType> |
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*/ |
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public static function fromCData( |
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string $type, |
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CData $c_pointer, |
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): self { |
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/** @var CInteger $addr */ |
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$addr = \FFI::cast('long', $c_pointer); |
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/** |
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* @psalm-suppress InaccessibleMethod |
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* @var CData $element |
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*/ |
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$element = $c_pointer[0]; |
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/** @param CType $ctype */ |
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$ctype = \FFI::typeof($element); |
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return new self( |
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$type, |
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$addr->cdata, |
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\FFI::sizeof($ctype), |
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); |
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} |
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} |
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sj-i /
php-profiler
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