Re: Protocol doesn't seem to compile?
Re: Protocol doesn't seem to compile?
- Subject: Re: Protocol doesn't seem to compile?
- From: Ondra Cada <email@hidden>
- Date: Fri, 27 Feb 2004 11:59:34 +0100
Jason,
On Friday, Feb 27, 2004, at 02:42 Europe/Prague,
email@hidden wrote:
I find it very odd that the syntax of a declared
protocol is not checked by the compiler unless the protocol has been
implemented, and thus referenced, by a class.
I am sorry, but it very definitely is checked--see the line number in
the following plain example:
59 /tmp> >ptest.m
#import <Foundation/Foundation.h>
@protocol Test
-(int)foo;
-bar:(uh oh)o; // this is a syntax error, of course
@end
@interface Test:NSObject <Test>
@end
@implementation Test
-(int)foo {return 0;}
-bar:o {return nil;}
@end
60 /tmp> cc -framework Foundation ptest.m
ptest.m:4: undefined type, found `uh'
ptest.m:4: illegal keyword selector, missing `)' after `uh'
cpp-precomp: warning: errors during smart preprocessing, retrying in
basic mode
ptest.m:4: parse error before "uh"
61 /tmp>
---
Ondra Hada
OCSoftware: email@hidden
http://www.ocs.cz
private email@hidden
http://www.ocs.cz/oc
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