* @file
* @since 1.20
*/
-
class CLDRPluralRuleEvaluator {
/**
* Evaluate a number against a set of plural rules. If a rule passes,
* Convert a set of rules to a compiled form which is optimised for
* fast evaluation. The result will be an array of strings, and may be cached.
*
- * @param $rules The rules to compile
- * @return An array of compile rules.
+ * @param array $rules The rules to compile
+ * @return array An array of compile rules.
*/
public static function compile( array $rules ) {
// We can't use array_map() for this because it generates a warning if
/**
* Evaluate a compiled set of rules returned by compile(). Do not allow
* the user to edit the compiled form, or else PHP errors may result.
+ *
+ * @param int The number to be evaluated against the rules
+ * @param array The associative array of plural rules in pluralform => rule format.
+ * @return int The index of the plural form which passed the evaluation
*/
public static function evaluateCompiled( $number, array $rules ) {
// The compiled form is RPN, with tokens strictly delimited by
/**
* Do a single operation
*
- * @param $token string The token string
- * @param $left The left operand. If it is an object, its state may be destroyed.
- * @param $right The right operand
+ * @param string $token The token string
+ * @param mixed $left The left operand. If it is an object, its state may be destroyed.
+ * @param mixed $right The right operand
* @throws CLDRPluralRuleError
- * @return mixed
+ * @return mixed The operation result
*/
private static function doOperation( $token, $left, $right ) {
if ( in_array( $token, array( 'in', 'not-in', 'within', 'not-within' ) ) ) {
* Evaluator helper class representing a range list.
*/
class CLDRPluralRuleEvaluator_Range {
+ /**
+ * The parts
+ *
+ * @var array
+ */
public $parts = array();
+ /**
+ * Initialize a new instance of CLDRPluralRuleEvaluator_Range
+ *
+ * @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;
}
/**
- * Determine if the given number is inside the range. If $integerConstraint
- * is true, the number must additionally be an integer if it is to match
- * any interval part.
+ * 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 ) {
/**
* 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. The supplied new part may either be a
- * range object itself, or a single number.
+ * Add another part to this range.
+ *
+ * @param mixed The part to add, either a range object itself or a single number.
*/
function add( $other ) {
if ( $other instanceof self ) {
}
/**
- * For debugging
+ * 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(';
* Helper class for converting rules to reverse polish notation (RPN).
*/
class CLDRPluralRuleConverter {
- public $rule, $pos, $end;
+ /**
+ * The rule
+ *
+ * @var string
+ */
+ public $rule;
+
+ /**
+ * The position
+ *
+ * @var int
+ */
+ public $pos;
+
+ /**
+ * The last position possible
+ *
+ * @var int
+ */
+ public $end;
+
+ /**
+ * The operators
+ *
+ * @var array
+ */
public $operators = array();
+
+ /**
+ * The operands
+ *
+ * @var array
+ */
public $operands = array();
/**
/**
* Convert a rule to RPN. This is the only public entry point.
+ *
+ * @param $rule The rule to convert
+ * @return string The RPN representation of the rule
*/
public static function convert( $rule ) {
$parser = new self( $rule );
/**
* Do the operation.
+ *
+ * @return string The RPN representation of the rule (e.g. "5 3 mod n is")
*/
protected function doConvert() {
$expectOperator = true;
}
/**
- * Fetch the next token from the input string. Return it as a
- * CLDRPluralRuleConverter_Fragment object.
+ * Fetch the next token from the input string.
+ *
+ * @return CLDRPluralRuleConverter_Fragment The next token
*/
protected function nextToken() {
if ( $this->pos >= $this->end ) {
/**
* Create a numerical expression object
+ *
+ * @return CLDRPluralRuleConverter_Expression The numerical expression
*/
protected function newNumber( $text, $pos ) {
return new CLDRPluralRuleConverter_Expression( $this, 'number', $text, $pos, strlen( $text ) );
/**
* Create a binary operator
+ *
+ * @return CLDRPluralRuleConverter_Operator The operator
*/
protected function newOperator( $type, $pos, $length ) {
return new CLDRPluralRuleConverter_Operator( $this, $type, $pos, $length );
* messages), and the binary operator at that location.
*/
class CLDRPluralRuleConverter_Operator extends CLDRPluralRuleConverter_Fragment {
+ /**
+ * The name
+ *
+ * @var string
+ */
public $name;
/**
* r = range
*
* A number is a kind of range.
+ *
+ * @var array
*/
static $opTypes = array(
'or' => 'bbb',
/**
* Map converting from the abbrevation to the full form.
+ *
+ * @var array
*/
static $typeSpecMap = array(
'b' => 'boolean',
'r' => 'range',
);
+ /**
+ * Initialize a new instance of a CLDRPluralRuleConverter_Operator object
+ *
+ * @param CLDRPluralRuleConverter $parser The parser
+ * @param string $name The operator name
+ * @param int $pos The position
+ * @param int $pos The length
+ */
function __construct( $parser, $name, $pos, $length ) {
parent::__construct( $parser, $pos, $length );
$this->name = $name;
}
+ /**
+ * Compute the operation
+ *
+ * @param CLDRPluralRuleConverter_Expression $left The left part of the expression
+ * @param CLDRPluralRuleConverter_Expression $right The right part of the expression
+ * @return CLDRPluralRuleConverter_Expression The result of the operation
+ */
public function operate( $left, $right ) {
$typeSpec = self::$opTypes[$this->name];
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