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| 1 | <?php |
| 2 | /** |
| 3 | * @author Tim Starling |
| 4 | * @author Niklas Laxström |
| 5 | * @license GPL-2.0-or-later |
| 6 | * @file |
| 7 | */ |
| 8 | |
| 9 | namespace CLDRPluralRuleParser; |
| 10 | |
| 11 | /** |
| 12 | * Evaluator helper class representing a range list. |
| 13 | */ |
| 14 | class Range { |
| 15 | /** |
| 16 | * The parts |
| 17 | * |
| 18 | * @var array |
| 19 | */ |
| 20 | public $parts = []; |
| 21 | |
| 22 | /** |
| 23 | * Initialize a new instance of Range |
| 24 | * |
| 25 | * @param int $start The start of the range |
| 26 | * @param int|bool $end The end of the range, or false if the range is not bounded. |
| 27 | */ |
| 28 | public function __construct( $start, $end = false ) { |
| 29 | if ( $end === false ) { |
| 30 | $this->parts[] = $start; |
| 31 | } else { |
| 32 | $this->parts[] = [ $start, $end ]; |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Determine if the given number is inside the range. |
| 38 | * |
| 39 | * @param int $number The number to check |
| 40 | * @param bool $integerConstraint If true, also asserts the number is an integer; |
| 41 | * otherwise, number simply has to be inside the range. |
| 42 | * @return bool True if the number is inside the range; otherwise, false. |
| 43 | */ |
| 44 | public function isNumberIn( $number, $integerConstraint = true ): bool { |
| 45 | foreach ( $this->parts as $part ) { |
| 46 | if ( is_array( $part ) ) { |
| 47 | if ( ( !$integerConstraint || floor( $number ) === (float)$number ) |
| 48 | && $number >= $part[0] && $number <= $part[1] |
| 49 | ) { |
| 50 | return true; |
| 51 | } |
| 52 | } else { |
| 53 | if ( $number == $part ) { |
| 54 | return true; |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | return false; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Readable alias for isNumberIn( $number, false ), and the implementation |
| 64 | * of the "within" operator. |
| 65 | * |
| 66 | * @param int $number The number to check |
| 67 | * @return bool True if the number is inside the range; otherwise, false. |
| 68 | */ |
| 69 | public function isNumberWithin( $number ): bool { |
| 70 | return $this->isNumberIn( $number, false ); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Add another part to this range. |
| 75 | * |
| 76 | * @param Range|int $other The part to add, either |
| 77 | * a range object itself or a single number. |
| 78 | */ |
| 79 | public function add( $other ) { |
| 80 | if ( $other instanceof self ) { |
| 81 | $this->parts = array_merge( $this->parts, $other->parts ); |
| 82 | } else { |
| 83 | $this->parts[] = $other; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Returns the string representation of the rule evaluator range. |
| 89 | * The purpose of this method is to help debugging. |
| 90 | * |
| 91 | * @return string The string representation of the rule evaluator range |
| 92 | */ |
| 93 | public function __toString() { |
| 94 | $s = 'Range('; |
| 95 | foreach ( $this->parts as $i => $part ) { |
| 96 | if ( $i ) { |
| 97 | $s .= ', '; |
| 98 | } |
| 99 | if ( is_array( $part ) ) { |
| 100 | $s .= $part[0] . '..' . $part[1]; |
| 101 | } else { |
| 102 | $s .= $part; |
| 103 | } |
| 104 | } |
| 105 | $s .= ')'; |
| 106 | |
| 107 | return $s; |
| 108 | } |
| 109 | } |