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<?php
/**
* Parses a function call.
*/
namespace PhpMyAdmin\SqlParser\Components;
use PhpMyAdmin\SqlParser\Component;
use PhpMyAdmin\SqlParser\Parser;
use PhpMyAdmin\SqlParser\Token;
use PhpMyAdmin\SqlParser\TokensList;
/**
* Parses a function call.
*
* @category Keywords
*
* @license https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+
*/
class FunctionCall extends Component
{
/**
* The name of this function.
*
* @var string
*/
public $name;
/**
* The list of parameters.
*
* @var ArrayObj
*/
public $parameters;
/**
* Constructor.
*
* @param string $name the name of the function to be called
* @param array|ArrayObj $parameters the parameters of this function
*/
public function __construct($name = null, $parameters = null)
{
$this->name = $name;
if (is_array($parameters)) {
$this->parameters = new ArrayObj($parameters);
} elseif ($parameters instanceof ArrayObj) {
$this->parameters = $parameters;
}
}
/**
* @param Parser $parser the parser that serves as context
* @param TokensList $list the list of tokens that are being parsed
* @param array $options parameters for parsing
*
* @return FunctionCall
*/
public static function parse(Parser $parser, TokensList $list, array $options = array())
{
$ret = new self();
/**
* The state of the parser.
*
* Below are the states of the parser.
*
* 0 ----------------------[ name ]-----------------------> 1
*
* 1 --------------------[ parameters ]-------------------> (END)
*
* @var int
*/
$state = 0;
for (; $list->idx < $list->count; ++$list->idx) {
/**
* Token parsed at this moment.
*
* @var Token
*/
$token = $list->tokens[$list->idx];
// End of statement.
if ($token->type === Token::TYPE_DELIMITER) {
break;
}
// Skipping whitespaces and comments.
if (($token->type === Token::TYPE_WHITESPACE) || ($token->type === Token::TYPE_COMMENT)) {
continue;
}
if ($state === 0) {
$ret->name = $token->value;
$state = 1;
} elseif ($state === 1) {
if (($token->type === Token::TYPE_OPERATOR) && ($token->value === '(')) {
$ret->parameters = ArrayObj::parse($parser, $list);
}
break;
}
}
return $ret;
}
/**
* @param FunctionCall $component the component to be built
* @param array $options parameters for building
*
* @return string
*/
public static function build($component, array $options = array())
{
return $component->name . $component->parameters;
}
}