mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-22 10:00:33 +00:00
unique_ptr and make_unique
This commit is contained in:
parent
af6a164e3c
commit
af5f69cea7
@ -130,6 +130,9 @@ AC_C_BIGENDIAN
|
||||
# Nice to have when an assertion triggers
|
||||
LYX_CHECK_CALLSTACK_PRINTING
|
||||
|
||||
# C++14 only
|
||||
LYX_CHECK_DEF(make_unique, memory, [using std::make_unique;])
|
||||
|
||||
# Needed for our char_type
|
||||
AC_CHECK_SIZEOF(wchar_t)
|
||||
|
||||
|
@ -106,6 +106,7 @@ liblyxsupport_a_SOURCES = \
|
||||
trivstring.cpp \
|
||||
trivstring.h \
|
||||
types.h \
|
||||
unique_ptr.h \
|
||||
userinfo.cpp \
|
||||
userinfo.h \
|
||||
unicode.cpp \
|
||||
|
74
src/support/unique_ptr.h
Normal file
74
src/support/unique_ptr.h
Normal file
@ -0,0 +1,74 @@
|
||||
// -*- C++ -*-
|
||||
/**
|
||||
* \file unique_ptr.h
|
||||
* This file is part of LyX, the document processor.
|
||||
* Licence details can be found in the file COPYING.
|
||||
*
|
||||
* \author Guillaume Munch
|
||||
*
|
||||
* Full author contact details are available in file CREDITS.
|
||||
*/
|
||||
|
||||
#ifndef LYX_UNIQUE_PTR_H
|
||||
#define LYX_UNIQUE_PTR_H
|
||||
|
||||
#include <memory>
|
||||
|
||||
namespace lyx { using std::unique_ptr; }
|
||||
|
||||
|
||||
/// Define lyx::make_unique() across platforms
|
||||
|
||||
#ifdef HAVE_DEF_MAKE_UNIQUE
|
||||
|
||||
namespace lyx { using std::make_unique; }
|
||||
|
||||
#else
|
||||
// For all other compilers:
|
||||
// using https://isocpp.org/files/papers/N3656.txt
|
||||
|
||||
#include <cstddef>
|
||||
#include <type_traits>
|
||||
#include <utility>
|
||||
|
||||
|
||||
namespace lyx {
|
||||
|
||||
namespace {
|
||||
|
||||
template<class T> struct _Unique_if {
|
||||
typedef unique_ptr<T> _Single_object;
|
||||
};
|
||||
|
||||
template<class T> struct _Unique_if<T[]> {
|
||||
typedef unique_ptr<T[]> _Unknown_bound;
|
||||
};
|
||||
|
||||
template<class T, size_t N> struct _Unique_if<T[N]> {
|
||||
typedef void _Known_bound;
|
||||
};
|
||||
|
||||
} //anon namespace
|
||||
|
||||
template<class T, class... Args>
|
||||
typename _Unique_if<T>::_Single_object
|
||||
make_unique(Args&&... args) {
|
||||
return unique_ptr<T>(new T(std::forward<Args>(args)...));
|
||||
}
|
||||
|
||||
template<class T>
|
||||
typename _Unique_if<T>::_Unknown_bound
|
||||
make_unique(size_t n) {
|
||||
typedef typename std::remove_extent<T>::type U;
|
||||
return unique_ptr<T>(new U[n]());
|
||||
}
|
||||
|
||||
template<class T, class... Args>
|
||||
typename _Unique_if<T>::_Known_bound
|
||||
make_unique(Args&&...) = delete;
|
||||
|
||||
} // namespace lyx
|
||||
|
||||
#endif // definition of make_unique
|
||||
|
||||
#endif // LYX_UNIQUE_PTR_H
|
Loading…
Reference in New Issue
Block a user