the editor for Fiasco.OC

I am reading Fiasco.OC source code, but didn't find a suitable editor. As the following code, the eclipse or Source Insight can't identify the class hierarchy. I want to know which editor is used by Fiasco.OC developer, Thanks !

class Kernel_uart
{
public:

};

....

EXTENSION class Kernel_uart : public Uart
{
private:

};