Checks if the given string is an operator.
| public static isOperator ( string $str ) : integer | ||
| $str | string | String to be checked. |
| return | integer | The appropriate flag for the operator. |
public function testIsOperator()
{
$this->assertEquals(Token::FLAG_OPERATOR_ARITHMETIC, Context::isOperator('%'));
$this->assertEquals(Token::FLAG_OPERATOR_LOGICAL, Context::isOperator('!'));
$this->assertEquals(Token::FLAG_OPERATOR_LOGICAL, Context::isOperator('&&'));
$this->assertEquals(Token::FLAG_OPERATOR_LOGICAL, Context::isOperator('<=>'));
$this->assertEquals(Token::FLAG_OPERATOR_BITWISE, Context::isOperator('&'));
$this->assertEquals(Token::FLAG_OPERATOR_ASSIGNMENT, Context::isOperator(':='));
$this->assertEquals(Token::FLAG_OPERATOR_SQL, Context::isOperator(','));
$this->assertEquals(Context::isOperator('a'), null);
}
/**
* Parses an operator.
*
* @return Token
*/
public function parseOperator()
{
$token = '';
/**
* Value to be returned.
* @var Token $ret
*/
$ret = null;
/**
* The value of `$this->last` where `$token` ends in `$this->str`.
* @var int $iEnd
*/
$iEnd = $this->last;
for ($j = 1; $j < Context::OPERATOR_MAX_LENGTH && $this->last < $this->len; ++$j, ++$this->last) {
$token .= $this->str[$this->last];
if ($flags = Context::isOperator($token)) {
$ret = new Token($token, Token::TYPE_OPERATOR, $flags);
$iEnd = $this->last;
}
}
$this->last = $iEnd;
return $ret;
}