102 lines
3.4 KiB
PHP
102 lines
3.4 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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* ConditionalPrimary = SimpleConditionalExpression | "(" ConditionalExpression ")"
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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 1.0
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* @version $Revision$
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*/
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class Doctrine_Query_Production_ConditionalPrimary extends Doctrine_Query_Production
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{
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protected $_conditionalExpression;
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public function syntax($paramHolder)
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{
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// ConditionalPrimary = SimpleConditionalExpression | "(" ConditionalExpression ")"
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if ( ! $this->_isConditionalExpression()) {
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return $this->AST('SimpleConditionalExpression', $paramHolder);
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}
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$this->_parser->match('(');
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$this->_conditionalExpression = $this->AST('ConditionalExpression', $paramHolder);
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$this->_parser->match(')');
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}
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public function buildSql()
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{
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return '(' . $this->_conditionalExpression->buildSql() . ')';
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}
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protected function _isConditionalExpression()
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{
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$token = $this->_parser->lookahead;
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$parenthesis = 0;
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if ($token['value'] === '(') {
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$parenthesis++;
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}
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while ($parenthesis > 0) {
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$token = $this->_parser->getScanner()->peek();
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if ($token['value'] === '(') {
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$parenthesis++;
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} elseif ($token['value'] === ')') {
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$parenthesis--;
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} else {
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switch ($token['type']) {
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case Doctrine_Query_Token::T_NOT:
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case Doctrine_Query_Token::T_AND:
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case Doctrine_Query_Token::T_OR:
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case Doctrine_Query_Token::T_BETWEEN:
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case Doctrine_Query_Token::T_LIKE:
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case Doctrine_Query_Token::T_IN:
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case Doctrine_Query_Token::T_IS:
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case Doctrine_Query_Token::T_EXISTS:
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return true;
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case Doctrine_Query_Token::T_NONE:
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switch ($token['value']) {
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case '=':
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case '<':
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case '>':
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case '!':
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return true;
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}
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break;
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}
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}
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}
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return false;
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}
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}
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