1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
<?php
/**
* An abstract base class that all query parser productions extend.
*/
abstract class Doctrine_Query_Production
{
/**
* a parser object
*
* @var Doctrine_Query_Parser
*/
protected $_parser;
/**
* Creates a new production object.
*
* @param Doctrine_Query_Parser $parser a parser object
*/
public function __construct(Doctrine_Query_Parser $parser)
{
$this->_parser = $parser;
}
protected function _isNextToken($token)
{
$la = $this->_parser->lookahead;
return ($la['type'] === $token || $la['value'] === $token);
}
/**
* Executes a production with specified name and parameters.
*
* @param string $name production name
* @param array $params an associative array containing parameter names and
* their values
* @return mixed
*/
public function __call($method, $args)
{
return $this->_parser->getProduction($method)->execute($args);
$this->_parser->getPrinter()->startProduction($name);
$retval = $this->_parser->getProduction($method)->execute($args);
$this->_parser->getPrinter()->endProduction();
return $retval;
}
/**
* Executes this production using the specified parameters.
*
* @param array $params an associative array containing parameter names and
* their values
* @return mixed
*/
abstract public function execute(array $params = array());
protected function _isSubquery()
{
$lookahead = $this->_parser->lookahead;
$next = $this->_parser->getScanner()->peek();
return $lookahead['value'] === '(' && $next['type'] === Doctrine_Query_Token::T_SELECT;
}
}