59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
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//
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// This code is licensed under the MIT License (MIT).
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef GSL_ZSTRING_H
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#define GSL_ZSTRING_H
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#include "span_ext" // for dynamic_extent
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#include <cstddef> // for size_t, nullptr_t
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namespace gsl
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{
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//
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// czstring and wzstring
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//
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// These are "tag" typedefs for C-style strings (i.e. null-terminated character arrays)
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// that allow static analysis to help find bugs.
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//
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// There are no additional features/semantics that we can find a way to add inside the
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// type system for these types that will not either incur significant runtime costs or
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// (sometimes needlessly) break existing programs when introduced.
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//
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template <typename CharT, std::size_t Extent = dynamic_extent>
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using basic_zstring = CharT*;
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using czstring = basic_zstring<const char, dynamic_extent>;
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using cwzstring = basic_zstring<const wchar_t, dynamic_extent>;
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using cu16zstring = basic_zstring<const char16_t, dynamic_extent>;
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using cu32zstring = basic_zstring<const char32_t, dynamic_extent>;
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using zstring = basic_zstring<char, dynamic_extent>;
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using wzstring = basic_zstring<wchar_t, dynamic_extent>;
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using u16zstring = basic_zstring<char16_t, dynamic_extent>;
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using u32zstring = basic_zstring<char32_t, dynamic_extent>;
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} // namespace gsl
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#endif // GSL_ZSTRING_H
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