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/
ArrayMergeOptimizer.php
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/
ArrayMergeOptimizer.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;
/**
* ArrayMergeOptimizer.
*
* Optimizes calls to 'array_merge' using internal function
*/
class ArrayMergeOptimizer 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 (2 != \count($expression['parameters'])) {
return false;
}
/*
* Process the expected symbol to be returned
*/
$call->processExpectedReturn($context);
$symbolVariable = $call->getSymbolVariable(true, $context);
if (!$symbolVariable->isVariable()) {
throw new CompilerException('Returned values by functions can only be assigned to variant variables', $expression);
}
$context->headersManager->add('kernel/array');
$symbolVariable->setDynamicTypes('array');
$resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
if ($call->mustInitSymbolVariable()) {
$symbolVariable->initVariant($context);
}
$symbol = $context->backend->getVariableCode($symbolVariable);
$resolveParam = $this->createParamResolver($context);
$context->codePrinter->output('zephir_fast_array_merge('.$symbol.', '.$resolveParam($resolvedParams[0]).', '.$resolveParam($resolvedParams[1]).');');
return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
}
private function createParamResolver(CompilationContext $context)
{
if (false == $context->backend->isZE3()) {
return function ($str) {
return '&('.$str.')';
};
}
return function ($str) {
return $str;
};
}
}