61 lines
2.3 KiB
PHP
61 lines
2.3 KiB
PHP
<?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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namespace Doctrine\ORM\Query\Parser;
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/**
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* FieldAliasIdentificationVariable ::= identifier
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*
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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 FieldAliasIdentificationVariable extends \Doctrine\ORM\Query\Parser
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{
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protected $_fieldAlias = null;
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public function syntax()
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{
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// AliasIdentificationVariable = identifier
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$this->_parser->match(\Doctrine\ORM\Query\Token::T_IDENTIFIER);
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$this->_fieldAlias = $this->_parser->token['value'];
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}
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public function semantical()
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{
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$parserResult = $this->_parser->getParserResult();
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if ($parserResult->hasFieldAlias($this->_fieldAlias)) {
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// We should throw semantical error if there's already a field for this alias
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$message = "Cannot re-declare field alias '" . $this->_fieldAlias
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. "' near '" . $this->_parser->getQueryPiece($this->_parser->token) . "'.";
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$this->_parser->semanticalError($message);
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}
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return $this->_fieldAlias;
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}
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} |