Class StringHandle

src/Platform/StringHandle.h:17–39

Note: StringHandle is a union member in ExpressionValue, therefore it must be no larger than 32 bits and it cannot have a non-trivial destructor, copy constructor etc. This means that when an object containing a StringHandle is copied or destroyed, that object must handle the reference count. Classes other than ExpressionValue should use AutoStringHandle instead;

// This means that when an object containing a StringHandle is copied or destroyed, that object must handle the reference count.
// Classes other than ExpressionValue should use AutoStringHandle instead;
class StringHandle
{
public:
	StringHandle() noexcept { slotPtr = nullptr; }
	explicit StringHandle(const char *_ecv_array s) noexcept;
	StringHandle(const char *_ecv_array s, size_t len) noexcept;

#if 0	// unused
	StringHandle(const char *_ecv_array s1, const char *_ecv_array s2) noexcept;
#endif

	ReadLockedPointer<const char> Get() const noexcept;
	size_t GetLength() const noexcept;
	void Delete() noexcept;
	const StringHandle& IncreaseRefCount() const noexcept;
	bool IsNull() const noexcept { return slotPtr == nullptr; }
	void Assign(const char *_ecv_array s) noexcept;

protected:
	void InternalAssign(const char *_ecv_array s, size_t len) noexcept;

	Heap::IndexSlot * null slotPtr;
};

// Version of StringHandle that updates the reference counts automatically
class AutoStringHandle : public StringHandle