diff options
Diffstat (limited to 'vendor/zendframework/zend-i18n/src/Translator/Plural/Rule.php')
| -rw-r--r-- | vendor/zendframework/zend-i18n/src/Translator/Plural/Rule.php | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/vendor/zendframework/zend-i18n/src/Translator/Plural/Rule.php b/vendor/zendframework/zend-i18n/src/Translator/Plural/Rule.php deleted file mode 100644 index 5427fce..0000000 --- a/vendor/zendframework/zend-i18n/src/Translator/Plural/Rule.php +++ /dev/null @@ -1,254 +0,0 @@ -<?php -/** - * Zend Framework (http://framework.zend.com/) - * - * @link http://github.com/zendframework/zf2 for the canonical source repository - * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) - * @license http://framework.zend.com/license/new-bsd New BSD License - */ - -namespace Zend\I18n\Translator\Plural; - -use Zend\I18n\Exception; - -/** - * Plural rule evaluator. - */ -class Rule -{ - /** - * Parser instance. - * - * @var Parser - */ - protected static $parser; - - /** - * Abstract syntax tree. - * - * @var array - */ - protected $ast; - - /** - * Number of plurals in this rule. - * - * @var int - */ - protected $numPlurals; - - /** - * Create a new plural rule. - * - * @param int $numPlurals - * @param array $ast - * @return Rule - */ - protected function __construct($numPlurals, array $ast) - { - $this->numPlurals = $numPlurals; - $this->ast = $ast; - } - - /** - * Evaluate a number and return the plural index. - * - * @param int $number - * @return int - * @throws Exception\RangeException - */ - public function evaluate($number) - { - $result = $this->evaluateAstPart($this->ast, abs((int) $number)); - - if ($result < 0 || $result >= $this->numPlurals) { - throw new Exception\RangeException( - sprintf('Calculated result %s is between 0 and %d', $result, ($this->numPlurals - 1)) - ); - } - - return $result; - } - - /** - * Get number of possible plural forms. - * - * @return int - */ - public function getNumPlurals() - { - return $this->numPlurals; - } - - /** - * Evaluate a part of an ast. - * - * @param array $ast - * @param int $number - * @return int - * @throws Exception\ParseException - */ - protected function evaluateAstPart(array $ast, $number) - { - switch ($ast['id']) { - case 'number': - return $ast['arguments'][0]; - - case 'n': - return $number; - - case '+': - return $this->evaluateAstPart($ast['arguments'][0], $number) - + $this->evaluateAstPart($ast['arguments'][1], $number); - - case '-': - return $this->evaluateAstPart($ast['arguments'][0], $number) - - $this->evaluateAstPart($ast['arguments'][1], $number); - - case '/': - // Integer division - return floor( - $this->evaluateAstPart($ast['arguments'][0], $number) - / $this->evaluateAstPart($ast['arguments'][1], $number) - ); - - case '*': - return $this->evaluateAstPart($ast['arguments'][0], $number) - * $this->evaluateAstPart($ast['arguments'][1], $number); - - case '%': - return $this->evaluateAstPart($ast['arguments'][0], $number) - % $this->evaluateAstPart($ast['arguments'][1], $number); - - case '>': - return $this->evaluateAstPart($ast['arguments'][0], $number) - > $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '>=': - return $this->evaluateAstPart($ast['arguments'][0], $number) - >= $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '<': - return $this->evaluateAstPart($ast['arguments'][0], $number) - < $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '<=': - return $this->evaluateAstPart($ast['arguments'][0], $number) - <= $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '==': - return $this->evaluateAstPart($ast['arguments'][0], $number) - == $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '!=': - return $this->evaluateAstPart($ast['arguments'][0], $number) - != $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '&&': - return $this->evaluateAstPart($ast['arguments'][0], $number) - && $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '||': - return $this->evaluateAstPart($ast['arguments'][0], $number) - || $this->evaluateAstPart($ast['arguments'][1], $number) - ? 1 : 0; - - case '!': - return !$this->evaluateAstPart($ast['arguments'][0], $number) - ? 1 : 0; - - case '?': - return $this->evaluateAstPart($ast['arguments'][0], $number) - ? $this->evaluateAstPart($ast['arguments'][1], $number) - : $this->evaluateAstPart($ast['arguments'][2], $number); - - default: - throw new Exception\ParseException(sprintf( - 'Unknown token: %s', - $ast['id'] - )); - } - } - - /** - * Create a new rule from a string. - * - * @param string $string - * @throws Exception\ParseException - * @return Rule - */ - public static function fromString($string) - { - if (static::$parser === null) { - static::$parser = new Parser(); - } - - if (!preg_match('(nplurals=(?P<nplurals>\d+))', $string, $match)) { - throw new Exception\ParseException(sprintf( - 'Unknown or invalid parser rule: %s', - $string - )); - } - - $numPlurals = (int) $match['nplurals']; - - if (!preg_match('(plural=(?P<plural>[^;\n]+))', $string, $match)) { - throw new Exception\ParseException(sprintf( - 'Unknown or invalid parser rule: %s', - $string - )); - } - - $tree = static::$parser->parse($match['plural']); - $ast = static::createAst($tree); - - return new static($numPlurals, $ast); - } - - /** - * Create an AST from a tree. - * - * Theoretically we could just use the given Symbol, but that one is not - * so easy to serialize and also takes up more memory. - * - * @param Symbol $symbol - * @return array - */ - protected static function createAst(Symbol $symbol) - { - $ast = array('id' => $symbol->id, 'arguments' => array()); - - switch ($symbol->id) { - case 'n': - break; - - case 'number': - $ast['arguments'][] = $symbol->value; - break; - - case '!': - $ast['arguments'][] = static::createAst($symbol->first); - break; - - case '?': - $ast['arguments'][] = static::createAst($symbol->first); - $ast['arguments'][] = static::createAst($symbol->second); - $ast['arguments'][] = static::createAst($symbol->third); - break; - - default: - $ast['arguments'][] = static::createAst($symbol->first); - $ast['arguments'][] = static::createAst($symbol->second); - break; - } - - return $ast; - } -} |