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Implement P0430R2 - File system library on non-POSIX systems.

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This patch implements P0430R2, who's largest change is adding the path::format
enumeration for supporting path format conversions in path constructors.

However, since libc++'s filesystem only really supports POSIX like systems,
there are no real changes needed. This patch simply adds the format enum
and then ignores it when it's passed to constructors.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@329031 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2018-04-02 23:35:24 +00:00
parent 1e34c76d33
commit e96d6a1fb7
4 changed files with 69 additions and 14 deletions
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19
include/experimental/filesystem
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@@ -721,24 +721,31 @@ public:
typedef _VSTD::string_view __string_view;
static _LIBCPP_CONSTEXPR value_type preferred_separator = '/';
enum class _LIBCPP_ENUM_VIS format : unsigned char {
auto_format,
native_format,
generic_format
};
// constructors and destructor
_LIBCPP_INLINE_VISIBILITY path() _NOEXCEPT {}
_LIBCPP_INLINE_VISIBILITY path(const path& __p) : __pn_(__p.__pn_) {}
_LIBCPP_INLINE_VISIBILITY path(path&& __p) _NOEXCEPT : __pn_(_VSTD::move(__p.__pn_)) {}
_LIBCPP_INLINE_VISIBILITY
path(string_type&& __s) _NOEXCEPT : __pn_(_VSTD::move(__s)) {}
path(string_type&& __s, format = format::auto_format) _NOEXCEPT
: __pn_(_VSTD::move(__s)) {}
template <
class _Source,
class = _EnableIfPathable<_Source, void>
>
path(const _Source& __src) {
path(const _Source& __src, format = format::auto_format) {
_SourceCVT<_Source>::__append_source(__pn_, __src);
}
template <class _InputIt>
path(_InputIt __first, _InputIt __last) {
path(_InputIt __first, _InputIt __last, format = format::auto_format) {
typedef typename iterator_traits<_InputIt>::value_type _ItVal;
_PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
}
@@ -747,9 +754,11 @@ public:
template <class _Source,
class = _EnableIfPathable<_Source, void>
>
path(const _Source& __src, const locale& __loc);
path(const _Source& __src, const locale& __loc,
format = format::auto_format);
template <class _InputIt>
path(_InputIt __first, _InputIt _last, const locale& __loc);
path(_InputIt __first, _InputIt _last, const locale& __loc,
format = format::auto_format);
_LIBCPP_INLINE_VISIBILITY
~path() = default;