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/
ClassExistsOptimizer.php
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/
ClassExistsOptimizer.php
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<?php
/*
* This file is part of the Zephir.
*
* (c) Zephir Team <team@zephir-lang.com>
*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
namespace Zephir\Optimizers\FunctionCall;
use Zephir\Call;
use Zephir\CompilationContext;
use Zephir\CompiledExpression;
use Zephir\Exception\CompilerException;
use Zephir\Optimizers\OptimizerAbstract;
/**
* ClassExistsOptimizer.
*
* Optimizes calls to 'class_exists' using internal function
*/
class ClassExistsOptimizer extends OptimizerAbstract
{
/**
* @param array $expression
* @param Call $call
* @param CompilationContext $context
*
* @throws CompilerException
*
* @return bool|CompiledExpression|mixed
*/
public function optimize(array $expression, Call $call, CompilationContext $context)
{
if (!isset($expression['parameters'])) {
return false;
}
if (\count($expression['parameters']) < 1) {
throw new CompilerException("'class_exists' require one or two parameters");
}
$resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
/*
* Process autoload
*/
if (2 == \count($resolvedParams)) {
$context->headersManager->add('kernel/operators');
$autoload = 'zephir_is_true('.$resolvedParams[1].') ';
} else {
$autoload = '1';
}
$context->headersManager->add('kernel/object');
return new CompiledExpression('bool', 'zephir_class_exists('.$resolvedParams[0].', '.$autoload.')', $expression);
}
}