/**
* Handles the given binary-assignment-operator
*
* @param string $op the operator (+,-,...)
* @param PC_Obj_Variable $var the variable
* @param PC_Obj_MultiType $e the expression
* @return PC_Obj_MultiType the result
*/
public function handle_bin_assign_op($op, $var, $e)
{
if (!$var instanceof PC_Obj_Variable) {
return $this->handle_error('$var is invalid');
}
if (!$e instanceof PC_Obj_MultiType) {
return $this->handle_error('$e is invalid');
}
// it does not exist, if it's not a local/global variable, e.g., a class field
if ($this->vars->exists($this->scope->get_name(), $var->get_name())) {
// since the variable does not occur literally in the code, we have to emulate a read access
$this->vars->get($this->scope->get_name(), $var->get_name());
}
$res = $this->handle_bin_op($op, $var->get_type(), $e);
$this->set_var($var, $res, true);
return $res;
}
