<?php

declare(strict_types=1);

namespace PHPJava\Kernel\Core;

use PHPJava\Core\JavaClass;

use PHPJava\Exceptions\UncaughtException;

use PHPJava\Kernel\Attributes\CodeAttribute;

use PHPJava\Kernel\Resolvers\AttributionResolver;

use PHPJava\Kernel\Structures\ExceptionTable;

use PHPJava\Packages\java\lang\NullPointerException;

use PHPJava\Utilities\Formatter;

trait ExceptionTableInspectable

{

/**

* @param $e

* @throws NullPointerException

* @throws UncaughtException

* @throws \PHPJava\Exceptions\UnableToFindAttributionException

* @return bool succeeded or failed

*/

public function inspectExceptionTable(\Exception $e): bool

{

/**

* @var CodeAttribute $codeAttribute

*/

$codeAttribute = AttributionResolver::resolve(

$this->getAttributes(),

CodeAttribute::class

);

$expectedClass = Formatter::convertPHPNamespacesToJava(

get_class($e)

);

$cpInfo = $this->getConstantPool();

foreach ($codeAttribute->getExceptionTables() as $exception) {

/**

* @var ExceptionTable $exception

*/

if ($exception->getStartPc() > $this->getProgramCounter() ||

$exception->getEndPc() < $this->getProgramCounter()

) {

continue;

}

// In finally statement.

if ($exception->getCatchType() === 0) {

$this->setOffset($exception->getHandlerPc());

return true;

}

$catchClass = Formatter::convertPHPNamespacesToJava($cpInfo[$cpInfo[$exception->getCatchType()]->getClassIndex()]->getString());

if ($catchClass === $expectedClass) {

$instance = JavaClass::load($catchClass)

->getInvoker()

->construct(

$e->getMessage(),

$e->getCode(),

$e

);

$this->pushToOperandStack($instance);

$this->setOffset($exception->getHandlerPc());

return true;

}

}

throw new UncaughtException(

$expectedClass . ': ' . $e->getMessage(),

0,

$e

);

}

}