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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// 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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// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Custom Moodle engine for mustache.
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*
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* @copyright 2019 Ryan Wyllie <ryan@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @package core
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*/
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namespace core\output;
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/**
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* Custom Moodle engine for mustache.
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*
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* @copyright 2019 Ryan Wyllie <ryan@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @package core
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*/
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class mustache_engine extends \Mustache_Engine {
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/**
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* @var mustache_helper_collection
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*/
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private $helpers;
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/**
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* @var string[] Names of helpers that aren't allowed to be called within other helpers.
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*/
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private $disallowednestedhelpers = [];
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/**
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* Mustache engine constructor.
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*
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* This provides an additional option to the parent \Mustache_Engine implementation:
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* $options = [
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* // A list of helpers (by name) to prevent from executing within the rendering
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* // of other helpers.
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* 'disallowednestedhelpers' => ['js']
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* ];
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* @param array $options [description]
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*/
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public function __construct(array $options = []) {
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if (isset($options['blacklistednestedhelpers'])) {
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debugging('blacklistednestedhelpers option is deprecated. Use disallowednestedhelpers instead.', DEBUG_DEVELOPER);
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$this->disallowednestedhelpers = $options['blacklistednestedhelpers'];
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}
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if (isset($options['disallowednestedhelpers'])) {
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$this->disallowednestedhelpers = $options['disallowednestedhelpers'];
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}
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parent::__construct($options);
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}
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/**
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* Get the current set of Mustache helpers.
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*
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* @see \Mustache_Engine::setHelpers
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*
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* @return \Mustache_HelperCollection
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*/
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public function gethelpers() {
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if (!isset($this->helpers)) {
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$this->helpers = new mustache_helper_collection(null, $this->disallowednestedhelpers);
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}
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return $this->helpers;
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}
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}
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