Joy Online Manual
NAME |
@protocol - Define a new Objective-C protocol |
SYNOPSIS |
@protocol protocol-name [<protocol1, protocol2, ...>]
[-|+][(type)] method-selector [declaration-list]
[-|+][(type)] method-selector [declaration-list]
...
@end
DESCRIPTION |
Defines a new protocol that adopts the given other protocols and consists of the declared methods. The @protocol syntax is identical to Objective-C. Joy understands the special protocol type qualifiers const, in, out, inout, bycopy, byref, and oneway.
Joy will report an error if there is a conflict between the protocol's methods and the methods required by any of the adopted other protocols. If protocol-name already exists, a warning message will be reported, and the redefinition will be ignored. |
EXAMPLE |
A reference-counting protocol could be declared like this: |
@protocol ReferenceCounting
- (void) setRefCount: (int) count;
- (int) refCount;
- (void) incrementCount;
- (void) decrementCount;
@end
SEE ALSO |
@protocol (expression) |
Index |