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<?php |
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/** |
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* This file is part of byrokrat\autogiro. |
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* |
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* byrokrat\autogiro is free software: you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as published |
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* by the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* byrokrat\autogiro is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with byrokrat\autogiro. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* Copyright 2016-18 Hannes Forsgård |
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*/ |
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declare(strict_types = 1); |
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namespace byrokrat\autogiro\Visitor; |
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use byrokrat\autogiro\Tree\Node; |
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/** |
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* Visitor that dynamically calls method based on node name and type |
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* |
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* Will read the node name and type (eg. SomeNode) and dispatch a node specific |
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* method if defined in visitor (eg. beforeSomeNode or afterSomeNode). By |
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* convention such visitor methods should type hint the specific node type |
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* (eg. beforeSomeNode(SomeNode $node)). |
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*/ |
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class Visitor implements VisitorInterface |
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{ |
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public function visitBefore(Node $node): void |
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{ |
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$this->visit('before', $node); |
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} |
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public function visitAfter(Node $node): void |
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{ |
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$this->visit('after', $node); |
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} |
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private function visit(string $prefix, Node $node): void |
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{ |
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$this->dispatch($prefix . $node->getName(), $node); |
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if ($node->getType() != $node->getName()) { |
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$this->dispatch($prefix . $node->getType(), $node); |
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} |
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} |
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private function dispatch(string $method, Node $node): void |
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{ |
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if (method_exists($this, $method)) { |
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$this->$method($node); |
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} |
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if (property_exists($this, $method) && is_callable($this->$method)) { |
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($this->$method)($node); |
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} |
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} |
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} |
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byrokrat /
autogiro
