external "nameless" enums

[abakoboParticipant]

I’ve encountered that type of “nameless” enum in an external class

Monkey

[crayon-5cba16a4ed2fe453078195 inline="true" ]class b2Draw { public: b2Draw(); virtual ~b2Draw() {} enum { e_shapeBit = 0x0001, ///< draw shapes e_jointBit = 0x0002, ///< draw joint connections e_aabbBit = 0x0004, ///< draw axis aligned bounding boxes e_pairBit = 0x0008, ///< draw broad-phase pairs e_centerOfMassBit = 0x0010 ///< draw center of mass frame }; /// Set the drawing flags. void SetFlags(uint32 flags); /// Get the drawing flags. uint32 GetFlags() const; /// Append flags to the current flags. void AppendFlags(uint32 flags); /// Clear flags from the current flags. void ClearFlags(uint32 flags);

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

[crayon-5cba16a4ed2fe453078195 inline="true" ]class b2Draw { public: b2Draw();   virtual ~b2Draw() {}   enum { e_shapeBit = 0x0001, ///< draw shapes e_jointBit = 0x0002, ///< draw joint connections e_aabbBit = 0x0004, ///< draw axis aligned bounding boxes e_pairBit = 0x0008, ///< draw broad-phase pairs e_centerOfMassBit = 0x0010 ///< draw center of mass frame };   /// Set the drawing flags. void SetFlags(uint32 flags);   /// Get the drawing flags. uint32 GetFlags() const; /// Append flags to the current flags. void AppendFlags(uint32 flags);   /// Clear flags from the current flags. void ClearFlags(uint32 flags);

[/crayon]

I can change flags by doing the bit additions myself and setting flag to 1,2,4,8,16 if i want only one flag to be “on” or adding any of these to get several ones.
But I’ll have a “expecting identifier” if I try to declare nameless enum:

Monkey

[crayon-5cba16a4ed304672945244 inline="true" ]Class b2Draw Extends Void Abstract Enum e_shapeBit e_jointBit e_aabbBit e_pairBit e_centerOfMassBit End Method SetFlags(flags:uInt) Method GetFlags:uInt() Method AppendFlags(flags:uInt) Method ClearFlags(flags:uInt)

1 2 3 4 5 6 7 8 9 10 11 12

[crayon-5cba16a4ed304672945244 inline="true" ]Class b2Draw Extends Void Abstract Enum e_shapeBit e_jointBit e_aabbBit e_pairBit e_centerOfMassBit End Method SetFlags(flags:uInt) Method GetFlags:uInt() Method AppendFlags(flags:uInt) Method ClearFlags(flags:uInt)

[/crayon]

But I’d like to implement it using the e_shapebit, e_xxxxxx enums. For it to be looking like the original.
Will I have to implement a new enum with some name or can I use as it is?(and how).

thx

[DaniloParticipant]

Try something like:

Monkey

Class b2Draw Extends Void Abstract Const e_shapeBit:uInt Const e_jointBit:uInt Const e_aabbBit:uInt Const e_pairBit:uInt Const e_centerOfMassBit:uInt Method SetFlags(flags:uInt)

1 2 3 4 5 6 7 8 9

Class b2Draw Extends Void Abstract Const e_shapeBit:uInt Const e_jointBit:uInt Const e_aabbBit:uInt Const e_pairBit:uInt Const e_centerOfMassBit:uInt   Method SetFlags(flags:uInt)

or:

Monkey

Class b2Draw Extends Void Abstract Const e_shapeBit:uInt = "b2Draw::e_shapeBit" Const e_jointBit:uInt = "b2Draw::e_jointBit" Const e_aabbBit:uInt = "b2Draw::e_aabbBit" Const e_pairBit:uInt = "b2Draw::e_pairBit" Const e_centerOfMassBit:uInt = "b2Draw::e_centerOfMassBit" Method SetFlags(flags:uInt)

1 2 3 4 5 6 7 8 9

Class b2Draw Extends Void Abstract Const e_shapeBit:uInt        = "b2Draw::e_shapeBit" Const e_jointBit:uInt        = "b2Draw::e_jointBit" Const e_aabbBit:uInt         = "b2Draw::e_aabbBit" Const e_pairBit:uInt         = "b2Draw::e_pairBit" Const e_centerOfMassBit:uInt = "b2Draw::e_centerOfMassBit"   Method SetFlags(flags:uInt)

If the C++ class ‘b2Draw’ is within a namespace, you probably need
to use the full name-qualifier, like:

Monkey

Const e_shapeBit:uInt = "TheNamespace::b2Draw::e_shapeBit"

1 2 3

Const e_shapeBit:uInt        = "TheNamespace::b2Draw::e_shapeBit"

[DaniloParticipant]

Did it help you, and is it working now?

[abakoboParticipant]

Just tried it..

first suggestion works if I use:
b2Draw_ext.SetFlags(b2Draw.e_shapeBit | b2Draw.e_jointBit) for example
or
b2Draw_ext.SetFlags(b2Draw_ext.e_shapeBit | b2Draw_ext.e_jointBit)

just e_shapeBit alone won’t work but it’s sufficient for me. May be work on that a bit more but if all goes well like that I’ll keep it so.

thanks!

[DaniloParticipant]

If you want to just use the e_*** constants without the class name,
you could add them additionally to Extern section – outside of a class.

Monkey

Extern Const e_shapeBit:uInt = "b2Draw::e_shapeBit" Const e_jointBit:uInt = "b2Draw::e_jointBit" Const e_aabbBit:uInt = "b2Draw::e_aabbBit" Const e_pairBit:uInt = "b2Draw::e_pairBit" Const e_centerOfMassBit:uInt = "b2Draw::e_centerOfMassBit"

1 2 3 4 5 6 7 8

Extern   Const e_shapeBit:uInt        = "b2Draw::e_shapeBit" Const e_jointBit:uInt        = "b2Draw::e_jointBit" Const e_aabbBit:uInt         = "b2Draw::e_aabbBit" Const e_pairBit:uInt         = "b2Draw::e_pairBit" Const e_centerOfMassBit:uInt = "b2Draw::e_centerOfMassBit"

Now you should be able to use e_shapeBit|e_jointBit etc.

[Author]

Posts