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127 lines
3.3 KiB
PHP
Executable File
127 lines
3.3 KiB
PHP
Executable File
<?php
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/**
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* Hoa
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*
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*
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* @license
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*
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* New BSD License
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*
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* Copyright © 2007-2017, Hoa community. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Hoa nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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namespace Hoa\Compiler\Llk\Rule;
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use Hoa\Compiler;
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/**
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* Class \Hoa\Compiler\Llk\Rule\Repetition.
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*
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* The repetition rule.
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*
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* @copyright Copyright © 2007-2017 Hoa community
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* @license New BSD License
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*/
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class Repetition extends Rule
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{
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/**
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* Minimum bound.
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*
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* @var int
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*/
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protected $_min = 0;
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/**
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* Maximum bound.
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*
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* @var int
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*/
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protected $_max = 0;
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/**
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* Constructor.
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*
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* @param string $name Name.
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* @param int $min Minimum bound.
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* @param int $max Maximum bound.
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* @param mixed $children Children.
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* @param string $nodeId Node ID.
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*/
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public function __construct($name, $min, $max, $children, $nodeId)
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{
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parent::__construct($name, $children, $nodeId);
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$min = max(0, (int) $min);
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$max = max(-1, (int) $max);
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if (-1 !== $max && $min > $max) {
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throw new Compiler\Exception\Rule(
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'Cannot repeat with a min (%d) greater than max (%d).',
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0,
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[$min, $max]
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);
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}
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$this->_min = $min;
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$this->_max = $max;
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return;
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}
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/**
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* Get minimum bound.
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*
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* @return int
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*/
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public function getMin()
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{
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return $this->_min;
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}
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/**
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* Get maximum bound.
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*
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* @return int
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*/
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public function getMax()
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{
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return $this->_max;
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}
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/**
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* Check whether the maximum repetition is unbounded.
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*
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* @return bool
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*/
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public function isInfinite()
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{
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return -1 === $this->getMax();
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}
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}
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