48 lines
1.6 KiB
PHP
48 lines
1.6 KiB
PHP
<?php
|
|
/**
|
|
* SelectExpression = (PathExpressionEndingWithAsterisk | Expression | "(" Subselect ")")
|
|
* [["AS"] IdentificationVariable]
|
|
*/
|
|
class Doctrine_Query_Production_SelectExpression extends Doctrine_Query_Production
|
|
{
|
|
private function _isPathExpressionEndingWithAsterisk()
|
|
{
|
|
$token = $this->_parser->lookahead;
|
|
$this->_parser->getScanner()->resetPeek();
|
|
|
|
while (($token['type'] === Doctrine_Query_Token::T_IDENTIFIER) || ($token['value'] === '.')) {
|
|
$token = $this->_parser->getScanner()->peek();
|
|
}
|
|
|
|
return $token['value'] === '*';
|
|
}
|
|
|
|
private function _isSubquery()
|
|
{
|
|
$lookahead = $this->_parser->lookahead;
|
|
$next = $this->_parser->getScanner()->peek();
|
|
|
|
return $lookahead['value'] === '(' && $next['type'] === Doctrine_Query_Token::T_SELECT;
|
|
}
|
|
|
|
public function execute(array $params = array())
|
|
{
|
|
if ($this->_isPathExpressionEndingWithAsterisk()) {
|
|
$this->PathExpressionEndingWithAsterisk();
|
|
} elseif ($this->_isSubquery()) {
|
|
$this->_parser->match('(');
|
|
$this->Subselect();
|
|
$this->_parser->match(')');
|
|
} else {
|
|
$this->Expression();
|
|
}
|
|
|
|
if ($this->_isNextToken(Doctrine_Query_Token::T_AS)) {
|
|
$this->_parser->match(Doctrine_Query_Token::T_AS);
|
|
$this->_parser->match(Doctrine_Query_Token::T_IDENTIFIER);
|
|
} elseif ($this->_isNextToken(Doctrine_Query_Token::T_IDENTIFIER)) {
|
|
$this->IdentificationVariable();
|
|
}
|
|
}
|
|
}
|