80 lines
3.1 KiB
PHP
80 lines
3.1 KiB
PHP
|
<?php
|
||
|
|
/*
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* This software consists of voluntary contributions made by many individuals
|
||
|
|
* and is licensed under the LGPL. For more information, see
|
||
|
|
* <http://www.phpdoctrine.org>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* SelectExpression ::= IdentificationVariable ["." "*"] |
|
||
|
|
* (StateFieldPathExpression | AggregateExpression | "(" Subselect ")" )
|
||
|
|
* [["AS"] FieldIdentificationVariable]
|
||
|
|
*
|
||
|
|
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
|
||
|
|
* @author Janne Vanhala <jpvanhal@cc.hut.fi>
|
||
|
|
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
|
||
|
|
* @link http://www.phpdoctrine.org
|
||
|
|
* @since 1.0
|
||
|
|
* @version $Revision$
|
||
|
|
*/
|
||
|
|
class Doctrine_ORM_Query_Parser_SelectExpression extends Doctrine_ORM_Query_ParserRule
|
||
|
|
{
|
||
|
|
protected $_AST = null;
|
||
|
|
|
||
|
|
|
||
|
|
public function syntax($paramHolder)
|
||
|
|
{
|
||
|
|
// SelectExpression ::= IdentificationVariable ["." "*"] |
|
||
|
|
// (StateFieldPathExpression | AggregateExpression | "(" Subselect ")" )
|
||
|
|
// [["AS"] FieldIdentificationVariable]
|
||
|
|
|
||
|
|
// First we recognize for an IdentificationVariable (Component alias)
|
||
|
|
if ($this->_isIdentificationVariable()) {
|
||
|
|
$identificationVariable = $this->parse('IdentificationVariable', $paramHolder);
|
||
|
|
|
||
|
|
// Inspecting if we are in a ["." "*"]
|
||
|
|
if ($this->_isNextToken('.')) {
|
||
|
|
$this->_parser->match('.');
|
||
|
|
$this->_parser->match('*');
|
||
|
|
}
|
||
|
|
|
||
|
|
return $identificationVariable;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
protected function _isIdentificationVariable()
|
||
|
|
{
|
||
|
|
// Retrying to recoginize this grammar: IdentificationVariable ["." "*"]
|
||
|
|
$token = $this->_parser->lookahead;
|
||
|
|
$this->_parser->getScanner()->resetPeek();
|
||
|
|
|
||
|
|
// We have an identifier here
|
||
|
|
if ($token['type'] === Doctrine_ORM_Query_Token::T_IDENTIFIER) {
|
||
|
|
$token = $this->_parser->getScanner()->peek();
|
||
|
|
|
||
|
|
// If we have a dot ".", then next char must be the "*"
|
||
|
|
if ($token['value'] === '.') {
|
||
|
|
$token = $this->_parser->getScanner()->peek();
|
||
|
|
|
||
|
|
return $token['value'] === '*';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|