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/
EvalOptimizer.php
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/
EvalOptimizer.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;
/**
* Zephir\Optimizers\FunctionCall\EvalOptimizer.
*/
class EvalOptimizer extends OptimizerAbstract
{
/**
* {@inheritdoc}
*
* @param array $expression
* @param Call $call
* @param CompilationContext $context
*
* @throws CompilerException
* @throws \Zephir\Exception
*
* @return bool|CompiledExpression|mixed
*/
public function optimize(array $expression, Call $call, CompilationContext $context)
{
if (!isset($expression['parameters']) || \count($expression['parameters']) > 1) {
return false;
}
/*
* Process the expected symbol to be returned
*/
$call->processExpectedReturn($context);
$symbolVariable = $call->getSymbolVariable(true, $context);
if ($symbolVariable->isNotVariableAndString()) {
throw new CompilerException(
'Returned values by functions can only be assigned to variant variables',
$expression
);
}
$context->headersManager->add('kernel/fcall');
$resolvedParams = $call->getReadOnlyResolvedParams($expression['parameters'], $context, $expression);
if ($call->mustInitSymbolVariable()) {
$symbolVariable->initVariant($context);
}
$evalContext = str_replace(
[getcwd().'\\', getcwd().'/'],
'',
$expression['file'].':'.$expression['line']
);
$symbol = $context->backend->getVariableCode($symbolVariable);
$context->codePrinter->output(
sprintf('zephir_eval_php(%s, %s, "%s");', $resolvedParams[0], $symbol, $evalContext)
);
return new CompiledExpression('variable', $symbolVariable->getRealName(), $expression);
}
}