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<?php
declare(strict_types=1);
namespace Sentry;
/**
* This class contains all the information about an error stacktrace.
*
* @author Stefano Arlandini <sarlandini@alice.it>
*/
final class Stacktrace
{
/**
* @var Frame[] The frames that compose the stacktrace
*/
private $frames = [];
/**
* Constructor.
*
* @param Frame[] $frames A non-empty list of stack frames. The list must be
* ordered from caller to callee. The last frame is the
* one creating the exception
*/
public function __construct(array $frames)
{
if (empty($frames)) {
throw new \InvalidArgumentException('Expected a non empty list of frames.');
}
foreach ($frames as $frame) {
if (!$frame instanceof Frame) {
throw new \UnexpectedValueException(sprintf('Expected an instance of the "%s" class. Got: "%s".', Frame::class, get_debug_type($frame)));
}
}
$this->frames = $frames;
}
/**
* Gets the stacktrace frames.
*
* @return Frame[]
*/
public function getFrames(): array
{
return $this->frames;
}
/**
* Gets the frame at the given index.
*
* @param int $index The index from which the frame should be get
*
* @throws \OutOfBoundsException
*/
public function getFrame(int $index): Frame
{
if ($index < 0 || $index >= \count($this->frames)) {
throw new \OutOfBoundsException();
}
return $this->frames[$index];
}
/**
* Adds a new frame to the stacktrace.
*
* @param Frame $frame The frame
*/
public function addFrame(Frame $frame): void
{
array_unshift($this->frames, $frame);
}
/**
* Removes the frame at the given index from the stacktrace.
*
* @param int $index The index of the frame
*
* @throws \OutOfBoundsException If the index is out of range
*/
public function removeFrame(int $index): void
{
if (!isset($this->frames[$index])) {
throw new \OutOfBoundsException(sprintf('Cannot remove the frame at index %d.', $index));
}
if (1 === \count($this->frames)) {
throw new \RuntimeException('Cannot remove all frames from the stacktrace.');
}
array_splice($this->frames, $index, 1);
}
}