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Partway through removing configurable SizeType.

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Neil MacIntosh
2015-10-15 14:29:35 -07:00
parent e0d10d1d1c
commit f45fedbec2
4 changed files with 411 additions and 462 deletions
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39
include/string_view.h
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@@ -34,16 +34,16 @@ namespace gsl
// type system for these types that will not either incur significant runtime costs or
// (sometimes needlessly) break existing programs when introduced.
//
template<size_t Max = dynamic_range>
template<std::ptrdiff_t Max = dynamic_range>
using czstring = const char*;
template<size_t Max = dynamic_range>
template<std::ptrdiff_t Max = dynamic_range>
using cwzstring = const wchar_t*;
template<size_t Max = dynamic_range>
template<std::ptrdiff_t Max = dynamic_range>
using zstring = char*;
template<size_t Max = dynamic_range>
template<std::ptrdiff_t Max = dynamic_range>
using wzstring = wchar_t*;
//
@@ -54,19 +54,19 @@ using wzstring = wchar_t*;
//
// TODO (neilmac) once array_view regains configurable size_type, update these typedef's
//
template <class CharT, size_t Extent = dynamic_range>
template <class CharT, std::ptrdiff_t Extent = dynamic_range>
using basic_string_view = array_view<CharT, Extent>;
template<size_t Extent = dynamic_range>
template<std::ptrdiff_t Extent = dynamic_range>
using string_view = basic_string_view<char, Extent>;
template<size_t Extent = dynamic_range>
template<std::ptrdiff_t Extent = dynamic_range>
using cstring_view = basic_string_view<const char, Extent>;
template<size_t Extent = dynamic_range>
template<std::ptrdiff_t Extent = dynamic_range>
using wstring_view = basic_string_view<wchar_t, Extent>;
template<size_t Extent = dynamic_range>
template<std::ptrdiff_t Extent = dynamic_range>
using cwstring_view = basic_string_view<const wchar_t, Extent>;
@@ -94,38 +94,39 @@ array_view<T, dynamic_range> ensure_sentinel(const T* seq, SizeType max = std::n
// the limit of size_type.
//
template<class T>
inline basic_string_view<T, dynamic_range> ensure_z(T* const & sz, size_t max = std::numeric_limits<size_t>::max())
inline basic_string_view<T, dynamic_range> ensure_z(T* const & sz, std::ptrdiff_t max = PTRDIFF_MAX)
{
return ensure_sentinel<0>(sz, max);
}
// TODO (neilmac) there is probably a better template-magic way to get the const and non-const overloads to share an implementation
inline basic_string_view<char, dynamic_range> ensure_z(char* const & sz, size_t max)
inline basic_string_view<char, dynamic_range> ensure_z(char* const& sz, std::ptrdiff_t max)
{
auto len = strnlen(sz, max);
fail_fast_assert(sz[len] == 0); return{ sz, len };
fail_fast_assert(sz[len] == 0);
return{ sz, static_cast<std::ptrdiff_t>(len) };
}
inline basic_string_view<const char, dynamic_range> ensure_z(const char* const& sz, size_t max)
inline basic_string_view<const char, dynamic_range> ensure_z(const char* const& sz, std::ptrdiff_t max)
{
auto len = strnlen(sz, max);
fail_fast_assert(sz[len] == 0); return{ sz, len };
fail_fast_assert(sz[len] == 0); return{ sz, static_cast<std::ptrdiff_t>(len) };
}
inline basic_string_view<wchar_t, dynamic_range> ensure_z(wchar_t* const & sz, size_t max)
inline basic_string_view<wchar_t, dynamic_range> ensure_z(wchar_t* const& sz, std::ptrdiff_t max)
{
auto len = wcsnlen(sz, max);
fail_fast_assert(sz[len] == 0); return{ sz, len };
fail_fast_assert(sz[len] == 0); return{ sz, static_cast<std::ptrdiff_t>(len) };
}
inline basic_string_view<const wchar_t, dynamic_range> ensure_z(const wchar_t* const & sz, size_t max)
inline basic_string_view<const wchar_t, dynamic_range> ensure_z(const wchar_t* const& sz, std::ptrdiff_t max)
{
auto len = wcsnlen(sz, max);
fail_fast_assert(sz[len] == 0); return{ sz, len };
fail_fast_assert(sz[len] == 0); return{ sz, static_cast<std::ptrdiff_t>(len) };
}
template<class T, size_t N>
basic_string_view<T, dynamic_range> ensure_z(T(&sz)[N]) { return ensure_z(&sz[0], N); }
basic_string_view<T, dynamic_range> ensure_z(T(&sz)[N]) { return ensure_z(&sz[0], static_cast<std::ptrdiff_t>(N)); }
template<class Cont>
basic_string_view<typename std::remove_pointer<typename Cont::pointer>::type, dynamic_range> ensure_z(Cont& cont)