XPIDL output (sample)

The input:

__declspec(inhibit) interface nsIBar { };

interface nsIFoo {
  attribute long myid;
  attribute boolean visible;
  attribute nsIBar parent;
  readonly attribute string name;
  void method(in string bogo, out string mips);
};

The output:

/* starting interface nsIFoo */
class nsIFoo {

  /* attribute long myid; */
  NS_IMETHOD GetMyid(PRInt32 &aMyid);
  NS_IMETHOD SetMyid(PRInt32 aMyid);

  /* attribute boolean visible; */
  NS_IMETHOD IsVisible(PRBool &aIsVisible);
  NS_IMETHOD SetVisible(PRBool aVisible);

  /* attribute nsIBar parent; */
  NS_IMETHOD GetParent(nsIBar * &aParent);
  NS_IMETHOD SetParent(nsIBar * aParent);

  /* readonly attribute string name; */
  NS_IMETHOD GetName(nsString * &aName);

  /* void method(in string bogo, out string mips); */
  NS_IMETHOD method(nsString * bogo, nsString * &mips);

};

• You should be able to say something a little less opaque than __declspec(inhibit) interface nsIBar to declare a dependency on another interface. Perhaps we can put some magic in so that we really do #include the other IDL file, but it has a __declspec(inhibit) conditionally visible (generated?).
• Since all C++ methods have to return nsresult (via the NS_IMETHOD signature), I'm thinking about taking the IDL return type and making it an additional out param at the end of the list. (In the varargs case, I guess it'd go before the format specifier and ...?)