std::string staticClassName,

std::string suffix) {

Class baseClass = objc_getClass(baseClassName.c_str());

std::string name =

!staticClassName.empty()

? staticClassName

: baseClassName + suffix + "_" +

std::to_string(++ClassBuilder::classNameCounter_);

// here we could either call objc_getClass with the name to see if the class

// already exists or we can just try allocating it, which will return nil if

// the class already exists so we try allocating it every time to avoid race

// conditions in case this method is being executed by multiple threads

Class clazz = objc_allocateClassPair(baseClass, name.c_str(), 0);

if (clazz == nil) {

int i = 1;

std::string initialName = name;

while (clazz == nil) {

name = initialName + std::to_string(i++);

clazz = objc_allocateClassPair(baseClass, name.c_str(), 0);

}

}

objc_registerClassPair(clazz);

return clazz;