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1633341906
same way as regular methods as far as overriding is concerned ("override"
is now allowed, and even required, to override them in a descendent class;
and similarly, "reintroduce" must be used if a category wants to replace
a method in a child class if that method was added by another category in
a parent class)
* print the name of owning objcclass/category of the original method in case
override/reintroduce is missing for objc methods, since this is no longer
always the parent class
git-svn-id: trunk@16035 -
47 lines
834 B
ObjectPascal
47 lines
834 B
ObjectPascal
{ %target=darwin }
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{ %cpu=powerpc,powerpc64,i386,x86_64,arm }
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{ %fail }
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{ Written by Jonas Maebe in 2010, released into the public domain }
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{$mode objfpc}
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{$modeswitch objectivec1}
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type
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MyObject2 = objcclass(NSObject)
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end;
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MyCategory = objccategory(MyObject2)
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procedure extraproc(a: longint); message 'extraproc:';
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end;
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MyObject = objcclass(NSObject)
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// overrides extraproc added to NSObject
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procedure extraproc(a: longint); override; message 'extraproc:';
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end;
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procedure MyCategory.extraproc(a: longint);
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begin
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if a<>1 then
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halt(1);
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end;
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procedure MyObject.extraproc(a: longint);
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begin
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if a<>2 then
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halt(2);
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end;
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var
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a: NSObject;
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b: MyObject;
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begin
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a:=NSObject.alloc.init;
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a.extraproc(1);
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a.release;
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b:=MyObject.alloc.init;
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b.extraproc(2);
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b.release;
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end.
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