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#ifndef FWCore_Utilities_OftenEmptyCString_h
#define FWCore_Utilities_OftenEmptyCString_h
/* Class is optimized to not require any additional memory
if the string passes is empty. A nullptr will be replaced with
the empty string as well.
*/
namespace edm {
class OftenEmptyCString {
public:
OftenEmptyCString() : m_value(emptyString()) {}
~OftenEmptyCString();
explicit OftenEmptyCString(const char*);
OftenEmptyCString(OftenEmptyCString const&);
OftenEmptyCString(OftenEmptyCString&&) noexcept;
OftenEmptyCString& operator=(OftenEmptyCString const&);
OftenEmptyCString& operator=(OftenEmptyCString&&) noexcept;
const char* c_str() const noexcept { return m_value; }
private:
static const char* emptyString();
void deleteIfNotEmpty();
char const* m_value;
};
} // namespace edm
#endif
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