Preprocessor Macros

#ifndef __IPHONE_3_0
#warning "This project uses features only available in iPhone SDK 3.0 and later."
#endif

#ifdef DEBUG
#define DLog(...) NSLog(@"%s %@", __PRETTY_FUNCTION__, [NSString stringWithFormat:__VA_ARGS__])
#define ALog(...) [[NSAssertionHandler currentHandler] handleFailureInFunction:[NSString stringWithCString:__PRETTY_FUNCTION__ encoding:NSUTF8StringEncoding] file:[NSString stringWithCString:__FILE__ encoding:NSUTF8StringEncoding] lineNumber:__LINE__ description:__VA_ARGS__]
#else
#define DLog(...) do { } while (0)
#ifndef NS_BLOCK_ASSERTIONS
#define NS_BLOCK_ASSERTIONS
#endif
#define ALog(...) NSLog(@"%s %@", __PRETTY_FUNCTION__, [NSString stringWithFormat:__VA_ARGS__])
#endif

#define ZAssert(condition, ...) do { if (!(condition)) { ALog(__VA_ARGS__); }} while(0)

// iPhone/iPad version checking

#ifndef kCFCoreFoundationVersionNumber_iPhoneOS_4_0
#define kCFCoreFoundationVersionNumber_iPhoneOS_4_0 550.32
#endif

#ifndef kCFCoreFoundationVersionNumber_iPhoneOS_3_2
#define kCFCoreFoundationVersionNumber_iPhoneOS_3_2 478.61
#endif

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000
#define IF_IOS4_OR_GREATER(...) \
if (kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iPhoneOS_4_0) \
{ \
__VA_ARGS__ \
}
#else
#define IF_IOS4_OR_GREATER(...)
#endif

#define IF_3_2_OR_GREATER(...) \
if (kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iPhoneOS_3_2) \
{ \
__VA_ARGS__ \
}

#ifdef __OBJC__
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>