mirror of https://github.com/catchorg/Catch2.git
53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
/*
|
|
* Copyright 2016 Two Blue Cubes Ltd. All rights reserved.
|
|
*
|
|
* Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
#ifndef CATCH_STRINGDATA_H_INCLUDED
|
|
#define CATCH_STRINGDATA_H_INCLUDED
|
|
|
|
#include <atomic>
|
|
|
|
namespace Catch {
|
|
|
|
class StringRef;
|
|
|
|
class StringData {
|
|
mutable std::atomic<unsigned int> m_refs;
|
|
public:
|
|
unsigned int size;
|
|
union {
|
|
char chars[1];
|
|
};
|
|
|
|
auto isUniquelyOwned() const noexcept -> bool {
|
|
return m_refs == 1;
|
|
}
|
|
static auto getEmpty() -> StringData*;
|
|
static auto create( StringRef const& stringRef ) -> StringData*;
|
|
static auto create( StringRef const& stringRef, unsigned long capacity ) -> StringData*;
|
|
|
|
void addRef() const noexcept {
|
|
if( m_refs > 0 )
|
|
m_refs++;
|
|
}
|
|
void release() const noexcept {
|
|
unsigned int refs = m_refs;
|
|
if( refs > 1 )
|
|
m_refs--;
|
|
else if( refs == 1 )
|
|
delete[] reinterpret_cast<char const*>( this );
|
|
}
|
|
private:
|
|
StringData( unsigned int initialRef = 1 );
|
|
StringData( StringRef const& stringRef, unsigned long capacity );
|
|
|
|
StringData( StringData const& ) = delete;
|
|
StringData& operator=( StringData const& ) = delete;
|
|
};
|
|
|
|
} // namespace Catch
|
|
|
|
#endif // CATCH_STRINGDATA_H_INCLUDED
|