Automatic Prefixing of Classes and Methods

[Fabian Jäger]

Dear Mail experts,
as I use some classes for multiple projects and I want to avoid naming conflicts, I was wondering whether there is a comfortable way of using some macro or similar to automatically add a pre- or suffix to class and method names?

Best regards,
Fabian

[Scott Morrison]

You can do this using macros:

If you want to use suffixes — just change the macros accordingly.

See my example — 

Create an header file for the nameSpace macros NameSpace.h

// PLUGIN_PREFIX can also defined in your preprocessor macros build settings.

#ifndef PLUGIN_PREFIX

#define PLUGIN_PREFIX MT  

#endif

#define PLUGIN_NAMESPACE_impl2(prefix, symbol) prefix ## symbol

#define PLUGIN_NAMESPACE_impl(prefix, symbol) PLUGIN_NAMESPACE_impl2(prefix, symbol)

#define PLUGIN_NAMESPACE(symbol) PLUGIN_NAMESPACE_impl(PLUGIN_PREFIX, symbol)

——

USAGE:

in your .h files for declaring classes, define the className to use the PLUGIN_NAMESPACE macro prior to class interface.

For example: MyClass.h

#import "NameSpace.h"

  

#define MyClass PLUGIN_NAMESPACE(MyClass)

// if PLUGIN_PREFIX is MT then 

// preprocessor will expand this (and every usage of MyClass) to MTMyClass

// 

@interface MyClass : NSObject

@end

Have fun not colliding your ClassNames.

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