Question

为了使旧文件能够在ARC下编译，请设置开关-fno-objc-arc 在构建阶段。

但只列出了.m文件，我可以添加-fno-objc-arc。

但我有一些.h文件也导致了ARC错误。我需要将该开关设置为那些.h文件。但是我没有在Build阶段看到它们。

那么，如何设置.h文件的开关？

以下是.h文件的示例

\
__object__=__array__->arr[0]; for(NSUInteger i=0, num=__array__->num; i<num; i++,   __object__=__array__->arr[i])   \


typedef struct ccArray {
    NSUInteger num, max;
    id *arr;
} ccArray;

/** Allocates and initializes a new array with specified capacity */
static inline ccArray* ccArrayNew(NSUInteger capacity) {
    if (capacity == 0)
            capacity = 1; 

    ccArray *arr = (ccArray*)malloc( sizeof(ccArray) );
    arr->num = 0;
    arr->arr =  (id*) malloc( capacity * sizeof(id) );
    arr->max = capacity;

    return arr;
}

 static inline void ccArrayRemoveAllObjects(ccArray *arr);

 /** Frees array after removing all remaining objects. Silently ignores nil arr. */
 static inline void ccArrayFree(ccArray *arr)
{
    if( arr == nil ) return;

    ccArrayRemoveAllObjects(arr);

    free(arr->arr);
    free(arr);
 }

 /** Doubles array capacity */
  static inline void ccArrayDoubleCapacity(ccArray *arr)
 {
    arr->max *= 2;
    id *newArr = (id *)realloc( arr->arr, arr->max * sizeof(id) );
    // will fail when there's not enough memory
     NSCAssert(newArr != NULL, @"ccArrayDoubleCapacity failed. Not enough memory");
    arr->arr = newArr;
}

  /** Increases array capacity such that max >= num + extra. */
   static inline void ccArrayEnsureExtraCapacity(ccArray *arr, NSUInteger extra)
 {
        while (arr->max < arr->num + extra)
            ccArrayDoubleCapacity(arr);
}

/** shrinks the array so the memory footprint corresponds with the number of items */
static inline void ccArrayShrink(ccArray *arr)
{
NSUInteger newSize;

    //only resize when necessary
    if (arr->max > arr->num && !(arr->num==0 && arr->max==1))
    {
            if (arr->num!=0) 
            {
                    newSize=arr->num;
                    arr->max=arr->num; 
            }
            else 
            {//minimum capacity of 1, with 0 elements the array would be free'd by realloc
                    newSize=1;
                    arr->max=1;
            }

            arr->arr = (id*) realloc(arr->arr,newSize * sizeof(id) );
            NSCAssert(arr->arr!=NULL,@"could not reallocate the memory");
    }
}

（id *）导致问题。

Answer 1

你可以将.h文件拆分成.h / .m文件对吗？这样，您可以将方法主体放在.m文件中，使用-fno-objc-arc进行编译，并随意包含.h文件。

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