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<?php
/**
* @author Niklas Laxström, Tim Starling
*
* @copyright Copyright © 2010-2012, Niklas Laxström
* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
*
* @file
* @since 1.20
*/
/**
* Evaluator helper class representing a range list.
*/
class CLDRPluralRuleEvaluatorRange {
/**
* The parts
*
* @var array
*/
public $parts = array();
/**
* Initialize a new instance of CLDRPluralRuleEvaluatorRange
*
* @param int $start The start of the range
* @param int|bool $end The end of the range, or false if the range is not bounded.
*/
function __construct( $start, $end = false ) {
if ( $end === false ) {
$this->parts[] = $start;
} else {
$this->parts[] = array( $start, $end );
}
}
/**
* Determine if the given number is inside the range.
*
* @param int $number The number to check
* @param bool $integerConstraint If true, also asserts the number is an integer;
* otherwise, number simply has to be inside the range.
* @return bool True if the number is inside the range; otherwise, false.
*/
function isNumberIn( $number, $integerConstraint = true ) {
foreach ( $this->parts as $part ) {
if ( is_array( $part ) ) {
if ( ( !$integerConstraint || floor( $number ) === (float)$number )
&& $number >= $part[0] && $number <= $part[1]
) {
return true;
}
} else {
if ( $number == $part ) {
return true;
}
}
}
return false;
}
/**
* Readable alias for isNumberIn( $number, false ), and the implementation
* of the "within" operator.
*
* @param int $number The number to check
* @return bool True if the number is inside the range; otherwise, false.
*/
function isNumberWithin( $number ) {
return $this->isNumberIn( $number, false );
}
/**
* Add another part to this range.
*
* @param CLDRPluralRuleEvaluatorRange|int $other The part to add, either
* a range object itself or a single number.
*/
function add( $other ) {
if ( $other instanceof self ) {
$this->parts = array_merge( $this->parts, $other->parts );
} else {
$this->parts[] = $other;
}
}
/**
* Returns the string representation of the rule evaluator range.
* The purpose of this method is to help debugging.
*
* @return string The string representation of the rule evaluator range
*/
function __toString() {
$s = 'Range(';
foreach ( $this->parts as $i => $part ) {
if ( $i ) {
$s .= ', ';
}
if ( is_array( $part ) ) {
$s .= $part[0] . '..' . $part[1];
} else {
$s .= $part;
}
}
$s .= ')';
return $s;
}
}
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