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<?php |
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/* |
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* Copyright 2016 Johannes M. Schmitt <[email protected]> |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace JMS\Serializer\Expression; |
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use Symfony\Component\ExpressionLanguage\ExpressionLanguage; |
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/** |
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* @author Asmir Mustafic <[email protected]> |
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*/ |
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class ExpressionEvaluator implements ExpressionEvaluatorInterface |
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{ |
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/** |
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* @var ExpressionLanguage |
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*/ |
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private $expressionLanguage; |
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/** |
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* @var array |
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*/ |
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private $context = array(); |
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/** |
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* @var array |
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*/ |
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private $cache = array(); |
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public function __construct(ExpressionLanguage $expressionLanguage, array $context = array(), array $cache = array()) |
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{ |
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$this->expressionLanguage = $expressionLanguage; |
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$this->context = $context; |
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$this->cache = $cache; |
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} |
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/** |
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* @param string $name |
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* @param mixed $value |
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*/ |
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public function setContextVariable($name, $value) |
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{ |
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$this->context[$name] = $value; |
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} |
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/** |
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* @param string $expression |
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* @param array $data |
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* @return mixed |
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*/ |
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public function evaluate($expression, array $data = array()) |
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{ |
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if (!is_string($expression)) { |
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return $expression; |
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} |
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$context = $data + $this->context; |
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if (!array_key_exists($expression, $this->cache)) { |
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$this->cache[$expression] = $this->expressionLanguage->parse($expression, array_keys($context)); |
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} |
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return $this->expressionLanguage->evaluate($this->cache[$expression], $context); |
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} |
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} |
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schmittjoh /
serializer
