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process constants #10

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sohocoke opened this issue Feb 21, 2011 · 1 comment

Owner

sohocoke commented Feb 21, 2011

e.g. in .m:
NSString* const kDate = @"kDate";
NSString* const kSubject = @"kSubject";
NSString* const kAlarmOffset = @"kAlarmOffset";

should produce in .h:
extern NSString* const kDate;
extern NSString* const kSubject;
extern NSString* const kAlarmOffset;

Owner Author

sohocoke commented Mar 11, 2011

implementation proposal:

in file-level annotation, introduce a new section 'constants' in MyClass.m:
/*@
#import xxx
...

 state:
 ...

 constants:
 NSString* kMyMagicString = @"hoho"
 NSString* kMyMagicStringWithDefault = "kMyMagicStringWithDefault"
 ...
*/
@implementation MyClass

Let this generate the header MyClass.h:
@interface MyClass : NSObject {
...
}
@EnD

// (OCHGEN) constants from class-level annotation
extern NSString const kMyMagicString;
extern NSString const kMyMagicStringWithDefault;

// (OCHGEN) constant implementation
#ifndef CONSTANTS_MyClass
    NSString* const kMyMagicString = @"hoho";
    NSString* const kMyMagicStringWithDefault = @"kMyMagicStringWithDefault";
    #define CONSTANTS_MyClass
#endif

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