97 lines
2.8 KiB
PHP
97 lines
2.8 KiB
PHP
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<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.org>.
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*/
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/**
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* Expression = Term {("+" | "-") Term}
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*
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* @package Doctrine
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* @subpackage Query
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @author Janne Vanhala <jpvanhal@cc.hut.fi>
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link http://www.phpdoctrine.org
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* @since 2.0
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* @version $Revision$
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*/
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class Doctrine_Query_Production_Expression extends Doctrine_Query_Production
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{
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protected $_terms = array();
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public function syntax($paramHolder)
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{
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// Expression = Term {("+" | "-") Term}
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$this->_terms[] = $this->AST('Term', $paramHolder);
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while ($this->_isNextToken('+') || $this->_isNextToken('-')) {
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if ($this->_isNextToken('+')) {
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$this->_parser->match('+');
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$this->_terms[] = '+';
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} else{
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$this->_parser->match('-');
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$this->_terms[] = '-';
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}
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$this->_terms[] = $this->AST('Term', $paramHolder);
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}
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// Optimize depth instances in AST
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if (count($this->_terms) == 1) {
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return $this->_terms[0];
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}
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}
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public function semantical($paramHolder)
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{
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for ($i = 0, $l = count($this->_terms); $i < $l; $i++) {
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if ($this->_terms[$i] != '+' && $this->_terms[$i] != '-') {
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$this->_terms[$i]->semantical($paramHolder);
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}
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}
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}
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public function buildSql()
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{
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return implode(' ', $this->_mapTerms());
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}
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protected function _mapTerms()
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{
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return array_map(array(&$this, '_mapTerm'), $this->_terms);
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}
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protected function _mapTerm($value)
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{
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return (is_string($value) ? $value : $value->buildSql());
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}
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/* Getters */
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public function getTerms()
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{
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return $this->_terms;
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}
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}
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