block 转 c++ 源码
如下代码 .h .m文件1
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32//TestClang.h
@interface TestClang : NSObject
+ (void)testBlcok;
@end
//TestClang.m
#import "TestClang.h"
static int numGlobel = 29;
@implementation TestClang
+ (void)testBlcok {
//没有截获局部变量 __NSGlobalBlock__
void(^block1)(void) = ^{
NSLog(@"just a block");
};
NSLog(@" block1 = %@", block1);
block1();
static int numStatic = 12;
int num = 10;
__block int numBlock = 19;
__block int numBlock2 = 30;
__block int numBlockTest = 30;
void(^block2)(void) = ^{
NSLog(@"just a block === %d, numStatic = %d numGlobel = %d numBlock=%d numBlock2=%d numBlockTest = %d", num,numStatic,numGlobel,numBlock,numBlock2,numBlockTest);
};
num = 33;
numStatic = 121;
numGlobel = 129;
numBlock = 22222;
block2();
NSLog(@"block2 = %@", block2);
}
@end
执行：xcrun -sdk iphoneos clang -arch arm64 -rewrite-objc TestClang.m
不要引用其他头文件，以免导出报Error
目录下生成了一个TestClang.cpp文件
- testBlock 对应的方法变为：
1 | //_C_ 表示为类方法 _I_ 为实例方法 |
