ios - Objective-C の動的バインディングを Swift 2 に変換します

Question

obj-c プロジェクトを迅速に変換している状況があります。それは次のとおりです

    // few lazy property initializers as, 
    @property (nonatomic, strong) MyObject *property1;
    @property (nonatomic, strong) MyObject *property2;
    @property (nonatomic, strong) MyObject *property3;
    ... 

    // I keep an index value to map these into a dictionary for reference
    - (NSDictionary *)indexMap
    {
    if (!_indexMap)
    {
    _indexMap = @{ 
    @(index1) : [NSValue valueWithPointer:@selector(property1)],
    @(index2) : [NSValue valueWithPointer:@selector(property2)],
    ...
    };
    }
    return _indexMap;
    }

// other dictionary for index to class map
- (NSDictionary *)classMap
{
return @{ 

NSStringFromClass(@"MyClassA") : @(index1),
NSStringFromClass(@"MyClassB") : @(index1),
NSStringFromClass(@"MyClassC") : @(index1),

NSStringFromClass(@"MyClassD") : @(index2),
NSStringFromClass(@"MyClassE") : @(index2),

NSStringFromClass(@"MyClassF") : @(index3),
... 
};
}

// finally i have method to pass in the class name & it will first find corresponding index, then use the index to return the property selector. 

私の懸念は、これを行う迅速な方法は何ですか?