private function _checkInnerAssignment() {
		// If the test if active and we are inside a control statement
		if ($this->_isActive('checkInnerAssignment') && $this->_inControlStatement) {

			// If the control statement is not listed as an exception
			if (!$this->_config->isException('checkInnerAssignment', $this->_currentStatement)) {
				$this->_writeError('checkInnerAssignment', $this->_getMessage('INSIDE_ASSIGNMENT'));
			}
		}
	}