Subclasses
suggest changeclass API
{
public:
static API& instance();
virtual ~API() {}
virtual const char* func1() = 0;
virtual void func2() = 0;
protected:
API() {}
API(const API&) = delete;
API& operator=(const API&) = delete;
};
class WindowsAPI : public API
{
public:
virtual const char* func1() override { /* Windows code */ }
virtual void func2() override { /* Windows code */ }
};
class LinuxAPI : public API
{
public:
virtual const char* func1() override { /* Linux code */ }
virtual void func2() override { /* Linux code */ }
};
API& API::instance() {
#if PLATFORM == WIN32
static WindowsAPI instance;
#elif PLATFORM = LINUX
static LinuxAPI instance;
#endif
return instance;
}
In this example, a simple compiler switch binds the API
class to the appropriate subclass. In this way, API
can be accessed without being coupled to platform-specific code.
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