-<?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
- */
-
-/**
- * Helper for CLDRPluralRuleConverter.
- * An operator object, representing a region of the input string (for error
- * messages), and the binary operator at that location.
- */
-class CLDRPluralRuleConverter_Operator extends CLDRPluralRuleConverter_Fragment {
- /** @var string The name */
- public $name;
-
- /**
- * Each op type has three characters: left operand type, right operand type and result type
- *
- * b = boolean
- * n = number
- * r = range
- *
- * A number is a kind of range.
- *
- * @var array
- */
- static $opTypes = array(
- 'or' => 'bbb',
- 'and' => 'bbb',
- 'is' => 'nnb',
- 'is-not' => 'nnb',
- 'in' => 'nrb',
- 'not-in' => 'nrb',
- 'within' => 'nrb',
- 'not-within' => 'nrb',
- 'mod' => 'nnn',
- ',' => 'rrr',
- '..' => 'nnr',
- );
-
- /**
- * Map converting from the abbrevation to the full form.
- *
- * @var array
- */
- static $typeSpecMap = array(
- 'b' => 'boolean',
- 'n' => 'number',
- 'r' => 'range',
- );
-
- /**
- * Map for converting the new operators introduced in Rev 33 to the old forms
- */
- static $aliasMap = array(
- '%' => 'mod',
- '!=' => 'not-in',
- '=' => 'in'
- );
-
- /**
- * Initialize a new instance of a CLDRPluralRuleConverter_Operator object
- *
- * @param CLDRPluralRuleConverter $parser The parser
- * @param string $name The operator name
- * @param int $pos The length
- * @param int $length
- */
- function __construct( $parser, $name, $pos, $length ) {
- parent::__construct( $parser, $pos, $length );
- if ( isset( self::$aliasMap[$name] ) ) {
- $name = self::$aliasMap[$name];
- }
- $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];
-
- $leftType = self::$typeSpecMap[$typeSpec[0]];
- $rightType = self::$typeSpecMap[$typeSpec[1]];
- $resultType = self::$typeSpecMap[$typeSpec[2]];
-
- $start = min( $this->pos, $left->pos, $right->pos );
- $end = max( $this->end, $left->end, $right->end );
- $length = $end - $start;
-
- $newExpr = new CLDRPluralRuleConverter_Expression( $this->parser, $resultType,
- "{$left->rpn} {$right->rpn} {$this->name}",
- $start, $length );
-
- if ( !$left->isType( $leftType ) ) {
- $newExpr->error( "invalid type for left operand: expected $leftType, got {$left->type}" );
- }
-
- if ( !$right->isType( $rightType ) ) {
- $newExpr->error( "invalid type for right operand: expected $rightType, got {$right->type}" );
- }
- return $newExpr;
- }
-}