mirror of
https://github.com/gnss-sdr/gnss-sdr
synced 2025-10-30 14:53:03 +00:00
Replace Guidelines Support Library implementation
Source: https://github.com/martinmoene/gsl-lite If works with gcc 4.8 (Microsoft's doesn't)
This commit is contained in:
Carles Fernandez
@@ -1,5 +1,8 @@
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///////////////////////////////////////////////////////////////////////////////
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//
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// gsl-lite is based on GSL: Guidelines Support Library.
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// For more information see https://github.com/martinmoene/gsl-lite
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//
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// Copyright (c) 2015 Martin Moene
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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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@@ -11,19 +14,14 @@
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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_GSL_H
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#define GSL_GSL_H
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// mimic MS include hierarchy
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#include <gsl/gsl_algorithm> // copy
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#include <gsl/gsl_assert> // Ensures/Expects
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#include <gsl/gsl_byte> // byte
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#include <gsl/gsl_util> // finally()/narrow()/narrow_cast()...
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#include <gsl/multi_span> // multi_span, strided_span...
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#include <gsl/pointers> // owner, not_null
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#include <gsl/span> // span
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#include <gsl/string_span> // zstring, string_span, zstring_builder...
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#pragma once
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#endif // GSL_GSL_H
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#ifndef GSL_GSL_H_INCLUDED
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#define GSL_GSL_H_INCLUDED
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#include "gsl-lite.hpp"
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#endif // GSL_GSL_H_INCLUDED
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3110
src/algorithms/libs/gsl/include/gsl/gsl-lite.hpp
Normal file
3110
src/algorithms/libs/gsl/include/gsl/gsl-lite.hpp
Normal file
File diff suppressed because it is too large
Load Diff
@@ -1,61 +0,0 @@
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///////////////////////////////////////////////////////////////////////////////
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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_ALGORITHM_H
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#define GSL_ALGORITHM_H
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#include <gsl/gsl_assert> // for Expects
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#include <gsl/span> // for dynamic_extent, span
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#include <algorithm> // for copy_n
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#include <cstddef> // for ptrdiff_t
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#include <type_traits> // for is_assignable
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#ifdef _MSC_VER
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#pragma warning(push)
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// turn off some warnings that are noisy about our Expects statements
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#pragma warning(disable : 4127) // conditional expression is constant
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#pragma warning(disable : 4996) // unsafe use of std::copy_n
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#endif // _MSC_VER
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namespace gsl
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{
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// Note: this will generate faster code than std::copy using span iterator in older msvc+stl
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// not necessary for msvc since VS2017 15.8 (_MSC_VER >= 1915)
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template <class SrcElementType, std::ptrdiff_t SrcExtent, class DestElementType,
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std::ptrdiff_t DestExtent>
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void copy(span<SrcElementType, SrcExtent> src, span<DestElementType, DestExtent> dest)
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{
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static_assert(std::is_assignable<decltype(*dest.data()), decltype(*src.data())>::value,
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"Elements of source span can not be assigned to elements of destination span");
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static_assert(SrcExtent == dynamic_extent || DestExtent == dynamic_extent ||
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(SrcExtent <= DestExtent),
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"Source range is longer than target range");
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Expects(dest.size() >= src.size());
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GSL_SUPPRESS(stl.1) // NO-FORMAT: attribute
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std::copy_n(src.data(), src.size(), dest.data());
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}
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} // namespace gsl
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif // _MSC_VER
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#endif // GSL_ALGORITHM_H
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@@ -1,177 +0,0 @@
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///////////////////////////////////////////////////////////////////////////////
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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_CONTRACTS_H
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#define GSL_CONTRACTS_H
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#include <exception>
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#include <stdexcept> // for logic_error
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//
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// make suppress attributes parse for some compilers
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// Hopefully temporary until suppression standardization occurs
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//
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#if defined(__clang__)
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#define GSL_SUPPRESS(x) [[gsl::suppress("x")]]
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#else
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#if defined(_MSC_VER)
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#define GSL_SUPPRESS(x) [[gsl::suppress(x)]]
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#else
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#define GSL_SUPPRESS(x)
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#endif // _MSC_VER
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#endif // __clang__
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//
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// Temporary until MSVC STL supports no-exceptions mode.
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// Currently terminate is a no-op in this mode, so we add termination behavior back
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//
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#if defined(_MSC_VER) && defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS
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#define GSL_MSVC_USE_STL_NOEXCEPTION_WORKAROUND
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#include <intrin.h>
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#define RANGE_CHECKS_FAILURE 0
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#if defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Winvalid-noreturn"
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#endif
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#endif
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//
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// There are three configuration options for this GSL implementation's behavior
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// when pre/post conditions on the GSL types are violated:
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//
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// 1. GSL_TERMINATE_ON_CONTRACT_VIOLATION: std::terminate will be called (default)
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// 2. GSL_THROW_ON_CONTRACT_VIOLATION: a gsl::fail_fast exception will be thrown
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// 3. GSL_UNENFORCED_ON_CONTRACT_VIOLATION: nothing happens
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//
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#if !(defined(GSL_THROW_ON_CONTRACT_VIOLATION) || defined(GSL_TERMINATE_ON_CONTRACT_VIOLATION) || \
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defined(GSL_UNENFORCED_ON_CONTRACT_VIOLATION))
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#define GSL_TERMINATE_ON_CONTRACT_VIOLATION
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#endif
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#define GSL_STRINGIFY_DETAIL(x) #x
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#define GSL_STRINGIFY(x) GSL_STRINGIFY_DETAIL(x)
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#if defined(__clang__) || defined(__GNUC__)
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#define GSL_LIKELY(x) __builtin_expect(!!(x), 1)
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#define GSL_UNLIKELY(x) __builtin_expect(!!(x), 0)
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#else
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#define GSL_LIKELY(x) (!!(x))
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#define GSL_UNLIKELY(x) (!!(x))
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#endif
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//
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// GSL_ASSUME(cond)
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//
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// Tell the optimizer that the predicate cond must hold. It is unspecified
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// whether or not cond is actually evaluated.
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//
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#ifdef _MSC_VER
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#define GSL_ASSUME(cond) __assume(cond)
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#elif defined(__GNUC__)
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#define GSL_ASSUME(cond) ((cond) ? static_cast<void>(0) : __builtin_unreachable())
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#else
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#define GSL_ASSUME(cond) static_cast<void>((cond) ? 0 : 0)
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#endif
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//
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// GSL.assert: assertions
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//
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namespace gsl
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{
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struct fail_fast : public std::logic_error
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{
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explicit fail_fast(char const* const message) : std::logic_error(message) {}
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};
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namespace details
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{
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#if defined(GSL_MSVC_USE_STL_NOEXCEPTION_WORKAROUND)
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typedef void (__cdecl *terminate_handler)();
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GSL_SUPPRESS(f.6) // NO-FORMAT: attribute
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[[noreturn]] inline void __cdecl default_terminate_handler()
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{
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__fastfail(RANGE_CHECKS_FAILURE);
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}
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inline gsl::details::terminate_handler& get_terminate_handler() noexcept
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{
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static terminate_handler handler = &default_terminate_handler;
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return handler;
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}
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#endif
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[[noreturn]] inline void terminate() noexcept
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{
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#if defined(GSL_MSVC_USE_STL_NOEXCEPTION_WORKAROUND)
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(*gsl::details::get_terminate_handler())();
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#else
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std::terminate();
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#endif
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}
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#if defined(GSL_TERMINATE_ON_CONTRACT_VIOLATION)
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template <typename Exception>
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[[noreturn]] void throw_exception(Exception&&) noexcept
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{
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gsl::details::terminate();
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}
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#else
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template <typename Exception>
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[[noreturn]] void throw_exception(Exception&& exception)
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{
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throw std::forward<Exception>(exception);
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}
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#endif // GSL_TERMINATE_ON_CONTRACT_VIOLATION
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} // namespace details
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} // namespace gsl
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#if defined(GSL_THROW_ON_CONTRACT_VIOLATION)
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#define GSL_CONTRACT_CHECK(type, cond) \
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(GSL_LIKELY(cond) ? static_cast<void>(0) \
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: gsl::details::throw_exception(gsl::fail_fast( \
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"GSL: " type " failure at " __FILE__ ": " GSL_STRINGIFY(__LINE__))))
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#elif defined(GSL_TERMINATE_ON_CONTRACT_VIOLATION)
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#define GSL_CONTRACT_CHECK(type, cond) \
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(GSL_LIKELY(cond) ? static_cast<void>(0) : gsl::details::terminate())
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#elif defined(GSL_UNENFORCED_ON_CONTRACT_VIOLATION)
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#define GSL_CONTRACT_CHECK(type, cond) GSL_ASSUME(cond)
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#endif // GSL_THROW_ON_CONTRACT_VIOLATION
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#define Expects(cond) GSL_CONTRACT_CHECK("Precondition", cond)
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#define Ensures(cond) GSL_CONTRACT_CHECK("Postcondition", cond)
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#if defined(GSL_MSVC_USE_STL_NOEXCEPTION_WORKAROUND) && defined(__clang__)
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#pragma clang diagnostic pop
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#endif
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#endif // GSL_CONTRACTS_H
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@@ -1,203 +0,0 @@
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///////////////////////////////////////////////////////////////////////////////
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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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//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
//
|
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///////////////////////////////////////////////////////////////////////////////
|
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#ifndef GSL_BYTE_H
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#define GSL_BYTE_H
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//
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// make suppress attributes work for some compilers
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// Hopefully temporary until suppression standardization occurs
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//
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#if defined(__clang__)
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#define GSL_SUPPRESS(x) [[gsl::suppress("x")]]
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#else
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#if defined(_MSC_VER)
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#define GSL_SUPPRESS(x) [[gsl::suppress(x)]]
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#else
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#define GSL_SUPPRESS(x)
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#endif // _MSC_VER
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#endif // __clang__
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#include <type_traits>
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#ifdef _MSC_VER
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#pragma warning(push)
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// Turn MSVC /analyze rules that generate too much noise. TODO: fix in the tool.
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#pragma warning(disable : 26493) // don't use c-style casts // TODO: MSVC suppression in templates does not always work
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#ifndef GSL_USE_STD_BYTE
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// this tests if we are under MSVC and the standard lib has std::byte and it is enabled
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#if defined(_HAS_STD_BYTE) && _HAS_STD_BYTE
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#define GSL_USE_STD_BYTE 1
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#else // defined(_HAS_STD_BYTE) && _HAS_STD_BYTE
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#define GSL_USE_STD_BYTE 0
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#endif // defined(_HAS_STD_BYTE) && _HAS_STD_BYTE
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#endif // GSL_USE_STD_BYTE
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#else // _MSC_VER
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#ifndef GSL_USE_STD_BYTE
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// this tests if we are under GCC or Clang with enough -std:c++1z power to get us std::byte
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// also check if libc++ version is sufficient (> 5.0) or libstc++ actually contains std::byte
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#if defined(__cplusplus) && (__cplusplus >= 201703L) && \
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(defined(__cpp_lib_byte) && (__cpp_lib_byte >= 201603) || \
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defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 5000))
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#define GSL_USE_STD_BYTE 1
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#include <cstddef>
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|
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#else // defined(__cplusplus) && (__cplusplus >= 201703L) &&
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// (defined(__cpp_lib_byte) && (__cpp_lib_byte >= 201603) ||
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// defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 5000))
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#define GSL_USE_STD_BYTE 0
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|
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#endif //defined(__cplusplus) && (__cplusplus >= 201703L) &&
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// (defined(__cpp_lib_byte) && (__cpp_lib_byte >= 201603) ||
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// defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 5000))
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#endif // GSL_USE_STD_BYTE
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|
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#endif // _MSC_VER
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// Use __may_alias__ attribute on gcc and clang
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#if defined __clang__ || (defined(__GNUC__) && __GNUC__ > 5)
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#define byte_may_alias __attribute__((__may_alias__))
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#else // defined __clang__ || defined __GNUC__
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#define byte_may_alias
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#endif // defined __clang__ || defined __GNUC__
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|
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namespace gsl
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{
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#if GSL_USE_STD_BYTE
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using std::byte;
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using std::to_integer;
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#else // GSL_USE_STD_BYTE
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// This is a simple definition for now that allows
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// use of byte within span<> to be standards-compliant
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enum class byte_may_alias byte : unsigned char
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{
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};
|
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|
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template <class IntegerType, class = std::enable_if_t<std::is_integral<IntegerType>::value>>
|
||||
constexpr byte& operator<<=(byte& b, IntegerType shift) noexcept
|
||||
{
|
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return b = byte(static_cast<unsigned char>(b) << shift);
|
||||
}
|
||||
|
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template <class IntegerType, class = std::enable_if_t<std::is_integral<IntegerType>::value>>
|
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constexpr byte operator<<(byte b, IntegerType shift) noexcept
|
||||
{
|
||||
return byte(static_cast<unsigned char>(b) << shift);
|
||||
}
|
||||
|
||||
template <class IntegerType, class = std::enable_if_t<std::is_integral<IntegerType>::value>>
|
||||
constexpr byte& operator>>=(byte& b, IntegerType shift) noexcept
|
||||
{
|
||||
return b = byte(static_cast<unsigned char>(b) >> shift);
|
||||
}
|
||||
|
||||
template <class IntegerType, class = std::enable_if_t<std::is_integral<IntegerType>::value>>
|
||||
constexpr byte operator>>(byte b, IntegerType shift) noexcept
|
||||
{
|
||||
return byte(static_cast<unsigned char>(b) >> shift);
|
||||
}
|
||||
|
||||
constexpr byte& operator|=(byte& l, byte r) noexcept
|
||||
{
|
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return l = byte(static_cast<unsigned char>(l) | static_cast<unsigned char>(r));
|
||||
}
|
||||
|
||||
constexpr byte operator|(byte l, byte r) noexcept
|
||||
{
|
||||
return byte(static_cast<unsigned char>(l) | static_cast<unsigned char>(r));
|
||||
}
|
||||
|
||||
constexpr byte& operator&=(byte& l, byte r) noexcept
|
||||
{
|
||||
return l = byte(static_cast<unsigned char>(l) & static_cast<unsigned char>(r));
|
||||
}
|
||||
|
||||
constexpr byte operator&(byte l, byte r) noexcept
|
||||
{
|
||||
return byte(static_cast<unsigned char>(l) & static_cast<unsigned char>(r));
|
||||
}
|
||||
|
||||
constexpr byte& operator^=(byte& l, byte r) noexcept
|
||||
{
|
||||
return l = byte(static_cast<unsigned char>(l) ^ static_cast<unsigned char>(r));
|
||||
}
|
||||
|
||||
constexpr byte operator^(byte l, byte r) noexcept
|
||||
{
|
||||
return byte(static_cast<unsigned char>(l) ^ static_cast<unsigned char>(r));
|
||||
}
|
||||
|
||||
constexpr byte operator~(byte b) noexcept { return byte(~static_cast<unsigned char>(b)); }
|
||||
|
||||
template <class IntegerType, class = std::enable_if_t<std::is_integral<IntegerType>::value>>
|
||||
constexpr IntegerType to_integer(byte b) noexcept
|
||||
{
|
||||
return static_cast<IntegerType>(b);
|
||||
}
|
||||
|
||||
#endif // GSL_USE_STD_BYTE
|
||||
|
||||
template <bool E, typename T>
|
||||
constexpr byte to_byte_impl(T t) noexcept
|
||||
{
|
||||
static_assert(
|
||||
E, "gsl::to_byte(t) must be provided an unsigned char, otherwise data loss may occur. "
|
||||
"If you are calling to_byte with an integer contant use: gsl::to_byte<t>() version.");
|
||||
return static_cast<byte>(t);
|
||||
}
|
||||
template <>
|
||||
// NOTE: need suppression since c++14 does not allow "return {t}"
|
||||
// GSL_SUPPRESS(type.4) // NO-FORMAT: attribute // TODO: suppression does not work
|
||||
constexpr byte to_byte_impl<true, unsigned char>(unsigned char t) noexcept
|
||||
{
|
||||
return byte(t);
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
constexpr byte to_byte(T t) noexcept
|
||||
{
|
||||
return to_byte_impl<std::is_same<T, unsigned char>::value, T>(t);
|
||||
}
|
||||
|
||||
template <int I>
|
||||
constexpr byte to_byte() noexcept
|
||||
{
|
||||
static_assert(I >= 0 && I <= 255,
|
||||
"gsl::byte only has 8 bits of storage, values must be in range 0-255");
|
||||
return static_cast<byte>(I);
|
||||
}
|
||||
|
||||
} // namespace gsl
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#pragma warning(pop)
|
||||
#endif // _MSC_VER
|
||||
|
||||
#endif // GSL_BYTE_H
|
||||
@@ -1,175 +0,0 @@
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
|
||||
//
|
||||
// This code is licensed under the MIT License (MIT).
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
//
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifndef GSL_UTIL_H
|
||||
#define GSL_UTIL_H
|
||||
|
||||
#include <gsl/gsl_assert> // for Expects
|
||||
|
||||
#include <array>
|
||||
#include <cstddef> // for ptrdiff_t, size_t
|
||||
#include <exception> // for exception
|
||||
#include <initializer_list> // for initializer_list
|
||||
#include <type_traits> // for is_signed, integral_constant
|
||||
#include <utility> // for forward
|
||||
|
||||
#if defined(_MSC_VER) && !defined(__clang__)
|
||||
|
||||
#pragma warning(push)
|
||||
#pragma warning(disable : 4127) // conditional expression is constant
|
||||
|
||||
#if _MSC_VER < 1910
|
||||
#pragma push_macro("constexpr")
|
||||
#define constexpr /*constexpr*/
|
||||
#endif // _MSC_VER < 1910
|
||||
#endif // _MSC_VER
|
||||
|
||||
#if (defined(_MSC_VER) && _MSC_VER < 1910) || (!defined(__clang__) && defined(__GNUC__) && __GUNC__ < 6)
|
||||
#define GSL_CONSTEXPR_NARROW 0
|
||||
#else
|
||||
#define GSL_CONSTEXPR_NARROW 1
|
||||
#endif
|
||||
|
||||
namespace gsl
|
||||
{
|
||||
//
|
||||
// GSL.util: utilities
|
||||
//
|
||||
|
||||
// index type for all container indexes/subscripts/sizes
|
||||
using index = std::ptrdiff_t;
|
||||
|
||||
// final_action allows you to ensure something gets run at the end of a scope
|
||||
template <class F>
|
||||
class final_action
|
||||
{
|
||||
public:
|
||||
explicit final_action(F f) noexcept : f_(std::move(f)) {}
|
||||
|
||||
final_action(final_action&& other) noexcept : f_(std::move(other.f_)), invoke_(other.invoke_)
|
||||
{
|
||||
other.invoke_ = false;
|
||||
}
|
||||
|
||||
final_action(const final_action&) = delete;
|
||||
final_action& operator=(const final_action&) = delete;
|
||||
final_action& operator=(final_action&&) = delete;
|
||||
|
||||
GSL_SUPPRESS(f.6) // NO-FORMAT: attribute // terminate if throws
|
||||
~final_action() noexcept
|
||||
{
|
||||
if (invoke_) f_();
|
||||
}
|
||||
|
||||
private:
|
||||
F f_;
|
||||
bool invoke_{true};
|
||||
};
|
||||
|
||||
// finally() - convenience function to generate a final_action
|
||||
template <class F>
|
||||
final_action<F> finally(const F& f) noexcept
|
||||
{
|
||||
return final_action<F>(f);
|
||||
}
|
||||
|
||||
template <class F>
|
||||
final_action<F> finally(F&& f) noexcept
|
||||
{
|
||||
return final_action<F>(std::forward<F>(f));
|
||||
}
|
||||
|
||||
// narrow_cast(): a searchable way to do narrowing casts of values
|
||||
template <class T, class U>
|
||||
GSL_SUPPRESS(type.1) // NO-FORMAT: attribute
|
||||
constexpr T narrow_cast(U&& u) noexcept
|
||||
{
|
||||
return static_cast<T>(std::forward<U>(u));
|
||||
}
|
||||
|
||||
struct narrowing_error : public std::exception
|
||||
{
|
||||
};
|
||||
|
||||
namespace details
|
||||
{
|
||||
template <class T, class U>
|
||||
struct is_same_signedness
|
||||
: public std::integral_constant<bool, std::is_signed<T>::value == std::is_signed<U>::value>
|
||||
{
|
||||
};
|
||||
} // namespace details
|
||||
|
||||
// narrow() : a checked version of narrow_cast() that throws if the cast changed the value
|
||||
template <class T, class U>
|
||||
GSL_SUPPRESS(type.1) // NO-FORMAT: attribute
|
||||
GSL_SUPPRESS(f.6) // NO-FORMAT: attribute // TODO: MSVC /analyze does not recognise noexcept(false)
|
||||
#if GSL_CONSTEXPR_NARROW
|
||||
constexpr
|
||||
#endif
|
||||
T narrow(U u) noexcept(false)
|
||||
{
|
||||
T t = narrow_cast<T>(u);
|
||||
if (static_cast<U>(t) != u) gsl::details::throw_exception(narrowing_error());
|
||||
if (!details::is_same_signedness<T, U>::value && ((t < T{}) != (u < U{})))
|
||||
gsl::details::throw_exception(narrowing_error());
|
||||
return t;
|
||||
}
|
||||
|
||||
//
|
||||
// at() - Bounds-checked way of accessing builtin arrays, std::array, std::vector
|
||||
//
|
||||
template <class T, std::size_t N>
|
||||
GSL_SUPPRESS(bounds.4) // NO-FORMAT: attribute
|
||||
GSL_SUPPRESS(bounds.2) // NO-FORMAT: attribute
|
||||
constexpr T& at(T (&arr)[N], const index i)
|
||||
{
|
||||
Expects(i >= 0 && i < narrow_cast<index>(N));
|
||||
return arr[narrow_cast<std::size_t>(i)];
|
||||
}
|
||||
|
||||
template <class Cont>
|
||||
GSL_SUPPRESS(bounds.4) // NO-FORMAT: attribute
|
||||
GSL_SUPPRESS(bounds.2) // NO-FORMAT: attribute
|
||||
constexpr auto at(Cont& cont, const index i) -> decltype(cont[cont.size()])
|
||||
{
|
||||
Expects(i >= 0 && i < narrow_cast<index>(cont.size()));
|
||||
using size_type = decltype(cont.size());
|
||||
return cont[narrow_cast<size_type>(i)];
|
||||
}
|
||||
|
||||
template <class T>
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
constexpr T at(const std::initializer_list<T> cont, const index i)
|
||||
{
|
||||
Expects(i >= 0 && i < narrow_cast<index>(cont.size()));
|
||||
return *(cont.begin() + i);
|
||||
}
|
||||
|
||||
} // namespace gsl
|
||||
|
||||
#if defined(_MSC_VER) && !defined(__clang__)
|
||||
#if _MSC_VER < 1910
|
||||
#undef constexpr
|
||||
#pragma pop_macro("constexpr")
|
||||
|
||||
#endif // _MSC_VER < 1910
|
||||
|
||||
#pragma warning(pop)
|
||||
|
||||
#endif // _MSC_VER
|
||||
|
||||
#endif // GSL_UTIL_H
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,294 +0,0 @@
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
|
||||
//
|
||||
// This code is licensed under the MIT License (MIT).
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
//
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifndef GSL_POINTERS_H
|
||||
#define GSL_POINTERS_H
|
||||
|
||||
#include <gsl/gsl_assert> // for Ensures, Expects
|
||||
|
||||
#include <algorithm> // for forward
|
||||
#include <iosfwd> // for ptrdiff_t, nullptr_t, ostream, size_t
|
||||
#include <memory> // for shared_ptr, unique_ptr
|
||||
#include <system_error> // for hash
|
||||
#include <type_traits> // for enable_if_t, is_convertible, is_assignable
|
||||
|
||||
#if defined(_MSC_VER) && _MSC_VER < 1910 && !defined(__clang__)
|
||||
#pragma push_macro("constexpr")
|
||||
#define constexpr /*constexpr*/
|
||||
|
||||
#endif // defined(_MSC_VER) && _MSC_VER < 1910
|
||||
|
||||
namespace gsl
|
||||
{
|
||||
|
||||
//
|
||||
// GSL.owner: ownership pointers
|
||||
//
|
||||
using std::unique_ptr;
|
||||
using std::shared_ptr;
|
||||
|
||||
//
|
||||
// owner
|
||||
//
|
||||
// owner<T> is designed as a bridge for code that must deal directly with owning pointers for some reason
|
||||
//
|
||||
// T must be a pointer type
|
||||
// - disallow construction from any type other than pointer type
|
||||
//
|
||||
template <class T, class = std::enable_if_t<std::is_pointer<T>::value>>
|
||||
using owner = T;
|
||||
|
||||
//
|
||||
// not_null
|
||||
//
|
||||
// Restricts a pointer or smart pointer to only hold non-null values.
|
||||
//
|
||||
// Has zero size overhead over T.
|
||||
//
|
||||
// If T is a pointer (i.e. T == U*) then
|
||||
// - allow construction from U*
|
||||
// - disallow construction from nullptr_t
|
||||
// - disallow default construction
|
||||
// - ensure construction from null U* fails
|
||||
// - allow implicit conversion to U*
|
||||
//
|
||||
template <class T>
|
||||
class not_null
|
||||
{
|
||||
public:
|
||||
static_assert(std::is_assignable<T&, std::nullptr_t>::value, "T cannot be assigned nullptr.");
|
||||
|
||||
template <typename U, typename = std::enable_if_t<std::is_convertible<U, T>::value>>
|
||||
constexpr not_null(U&& u) : ptr_(std::forward<U>(u))
|
||||
{
|
||||
Expects(ptr_ != nullptr);
|
||||
}
|
||||
|
||||
template <typename = std::enable_if_t<!std::is_same<std::nullptr_t, T>::value>>
|
||||
constexpr not_null(T u) : ptr_(u)
|
||||
{
|
||||
Expects(ptr_ != nullptr);
|
||||
}
|
||||
|
||||
template <typename U, typename = std::enable_if_t<std::is_convertible<U, T>::value>>
|
||||
constexpr not_null(const not_null<U>& other) : not_null(other.get())
|
||||
{
|
||||
}
|
||||
|
||||
not_null(not_null&& other) = default;
|
||||
not_null(const not_null& other) = default;
|
||||
not_null& operator=(const not_null& other) = default;
|
||||
|
||||
constexpr T get() const
|
||||
{
|
||||
Ensures(ptr_ != nullptr);
|
||||
return ptr_;
|
||||
}
|
||||
|
||||
constexpr operator T() const { return get(); }
|
||||
constexpr T operator->() const { return get(); }
|
||||
constexpr decltype(auto) operator*() const { return *get(); }
|
||||
|
||||
// prevents compilation when someone attempts to assign a null pointer constant
|
||||
not_null(std::nullptr_t) = delete;
|
||||
not_null& operator=(std::nullptr_t) = delete;
|
||||
|
||||
// unwanted operators...pointers only point to single objects!
|
||||
not_null& operator++() = delete;
|
||||
not_null& operator--() = delete;
|
||||
not_null operator++(int) = delete;
|
||||
not_null operator--(int) = delete;
|
||||
not_null& operator+=(std::ptrdiff_t) = delete;
|
||||
not_null& operator-=(std::ptrdiff_t) = delete;
|
||||
void operator[](std::ptrdiff_t) const = delete;
|
||||
|
||||
private:
|
||||
T ptr_;
|
||||
};
|
||||
|
||||
template <class T>
|
||||
auto make_not_null(T&& t) {
|
||||
return not_null<std::remove_cv_t<std::remove_reference_t<T>>>{std::forward<T>(t)};
|
||||
}
|
||||
|
||||
template <class T>
|
||||
std::ostream& operator<<(std::ostream& os, const not_null<T>& val)
|
||||
{
|
||||
os << val.get();
|
||||
return os;
|
||||
}
|
||||
|
||||
template <class T, class U>
|
||||
auto operator==(const not_null<T>& lhs, const not_null<U>& rhs) -> decltype(lhs.get() == rhs.get())
|
||||
{
|
||||
return lhs.get() == rhs.get();
|
||||
}
|
||||
|
||||
template <class T, class U>
|
||||
auto operator!=(const not_null<T>& lhs, const not_null<U>& rhs) -> decltype(lhs.get() != rhs.get())
|
||||
{
|
||||
return lhs.get() != rhs.get();
|
||||
}
|
||||
|
||||
template <class T, class U>
|
||||
auto operator<(const not_null<T>& lhs, const not_null<U>& rhs) -> decltype(lhs.get() < rhs.get())
|
||||
{
|
||||
return lhs.get() < rhs.get();
|
||||
}
|
||||
|
||||
template <class T, class U>
|
||||
auto operator<=(const not_null<T>& lhs, const not_null<U>& rhs) -> decltype(lhs.get() <= rhs.get())
|
||||
{
|
||||
return lhs.get() <= rhs.get();
|
||||
}
|
||||
|
||||
template <class T, class U>
|
||||
auto operator>(const not_null<T>& lhs, const not_null<U>& rhs) -> decltype(lhs.get() > rhs.get())
|
||||
{
|
||||
return lhs.get() > rhs.get();
|
||||
}
|
||||
|
||||
template <class T, class U>
|
||||
auto operator>=(const not_null<T>& lhs, const not_null<U>& rhs) -> decltype(lhs.get() >= rhs.get())
|
||||
{
|
||||
return lhs.get() >= rhs.get();
|
||||
}
|
||||
|
||||
// more unwanted operators
|
||||
template <class T, class U>
|
||||
std::ptrdiff_t operator-(const not_null<T>&, const not_null<U>&) = delete;
|
||||
template <class T>
|
||||
not_null<T> operator-(const not_null<T>&, std::ptrdiff_t) = delete;
|
||||
template <class T>
|
||||
not_null<T> operator+(const not_null<T>&, std::ptrdiff_t) = delete;
|
||||
template <class T>
|
||||
not_null<T> operator+(std::ptrdiff_t, const not_null<T>&) = delete;
|
||||
|
||||
} // namespace gsl
|
||||
|
||||
namespace std
|
||||
{
|
||||
template <class T>
|
||||
struct hash<gsl::not_null<T>>
|
||||
{
|
||||
std::size_t operator()(const gsl::not_null<T>& value) const { return hash<T>{}(value); }
|
||||
};
|
||||
|
||||
} // namespace std
|
||||
|
||||
namespace gsl
|
||||
{
|
||||
|
||||
//
|
||||
// strict_not_null
|
||||
//
|
||||
// Restricts a pointer or smart pointer to only hold non-null values,
|
||||
//
|
||||
// - provides a strict (i.e. explicit contructor from T) wrapper of not_null
|
||||
// - to be used for new code that wishes the design to be cleaner and make not_null
|
||||
// checks intentional, or in old code that would like to make the transition.
|
||||
//
|
||||
// To make the transition from not_null, incrementally replace not_null
|
||||
// by strict_not_null and fix compilation errors
|
||||
//
|
||||
// Expect to
|
||||
// - remove all unneded conversions from raw pointer to not_null and back
|
||||
// - make API clear by specifyning not_null in parameters where needed
|
||||
// - remove unnesessary asserts
|
||||
//
|
||||
template <class T>
|
||||
class strict_not_null: public not_null<T>
|
||||
{
|
||||
public:
|
||||
|
||||
template <typename U, typename = std::enable_if_t<std::is_convertible<U, T>::value>>
|
||||
constexpr explicit strict_not_null(U&& u) :
|
||||
not_null<T>(std::forward<U>(u))
|
||||
{}
|
||||
|
||||
template <typename = std::enable_if_t<!std::is_same<std::nullptr_t, T>::value>>
|
||||
constexpr explicit strict_not_null(T u) :
|
||||
not_null<T>(u)
|
||||
{}
|
||||
|
||||
template <typename U, typename = std::enable_if_t<std::is_convertible<U, T>::value>>
|
||||
constexpr strict_not_null(const not_null<U>& other) :
|
||||
not_null<T>(other)
|
||||
{}
|
||||
|
||||
template <typename U, typename = std::enable_if_t<std::is_convertible<U, T>::value>>
|
||||
constexpr strict_not_null(const strict_not_null<U>& other) :
|
||||
not_null<T>(other)
|
||||
{}
|
||||
|
||||
strict_not_null(strict_not_null&& other) = default;
|
||||
strict_not_null(const strict_not_null& other) = default;
|
||||
strict_not_null& operator=(const strict_not_null& other) = default;
|
||||
strict_not_null& operator=(const not_null<T>& other)
|
||||
{
|
||||
not_null<T>::operator=(other);
|
||||
return *this;
|
||||
}
|
||||
|
||||
// prevents compilation when someone attempts to assign a null pointer constant
|
||||
strict_not_null(std::nullptr_t) = delete;
|
||||
strict_not_null& operator=(std::nullptr_t) = delete;
|
||||
|
||||
// unwanted operators...pointers only point to single objects!
|
||||
strict_not_null& operator++() = delete;
|
||||
strict_not_null& operator--() = delete;
|
||||
strict_not_null operator++(int) = delete;
|
||||
strict_not_null operator--(int) = delete;
|
||||
strict_not_null& operator+=(std::ptrdiff_t) = delete;
|
||||
strict_not_null& operator-=(std::ptrdiff_t) = delete;
|
||||
void operator[](std::ptrdiff_t) const = delete;
|
||||
};
|
||||
|
||||
// more unwanted operators
|
||||
template <class T, class U>
|
||||
std::ptrdiff_t operator-(const strict_not_null<T>&, const strict_not_null<U>&) = delete;
|
||||
template <class T>
|
||||
strict_not_null<T> operator-(const strict_not_null<T>&, std::ptrdiff_t) = delete;
|
||||
template <class T>
|
||||
strict_not_null<T> operator+(const strict_not_null<T>&, std::ptrdiff_t) = delete;
|
||||
template <class T>
|
||||
strict_not_null<T> operator+(std::ptrdiff_t, const strict_not_null<T>&) = delete;
|
||||
|
||||
template <class T>
|
||||
auto make_strict_not_null(T&& t) {
|
||||
return strict_not_null<std::remove_cv_t<std::remove_reference_t<T>>>{std::forward<T>(t)};
|
||||
}
|
||||
|
||||
} // namespace gsl
|
||||
|
||||
namespace std
|
||||
{
|
||||
template <class T>
|
||||
struct hash<gsl::strict_not_null<T>>
|
||||
{
|
||||
std::size_t operator()(const gsl::strict_not_null<T>& value) const { return hash<T>{}(value); }
|
||||
};
|
||||
|
||||
} // namespace std
|
||||
|
||||
#if defined(_MSC_VER) && _MSC_VER < 1910 && !defined(__clang__)
|
||||
|
||||
#undef constexpr
|
||||
#pragma pop_macro("constexpr")
|
||||
|
||||
#endif // defined(_MSC_VER) && _MSC_VER < 1910 && !defined(__clang__)
|
||||
|
||||
#endif // GSL_POINTERS_H
|
||||
@@ -1,793 +0,0 @@
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
|
||||
//
|
||||
// This code is licensed under the MIT License (MIT).
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
//
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifndef GSL_SPAN_H
|
||||
#define GSL_SPAN_H
|
||||
|
||||
#include <gsl/gsl_assert> // for Expects
|
||||
#include <gsl/gsl_byte> // for byte
|
||||
#include <gsl/gsl_util> // for narrow_cast, narrow
|
||||
|
||||
#include <algorithm> // for lexicographical_compare
|
||||
#include <array> // for array
|
||||
#include <cstddef> // for ptrdiff_t, size_t, nullptr_t
|
||||
#include <iterator> // for reverse_iterator, distance, random_access_...
|
||||
#include <limits>
|
||||
#include <stdexcept>
|
||||
#include <type_traits> // for enable_if_t, declval, is_convertible, inte...
|
||||
#include <utility>
|
||||
#include <memory> // for std::addressof
|
||||
|
||||
#if defined(_MSC_VER) && !defined(__clang__)
|
||||
#pragma warning(push)
|
||||
|
||||
// turn off some warnings that are noisy about our Expects statements
|
||||
#pragma warning(disable : 4127) // conditional expression is constant
|
||||
#pragma warning(disable : 4702) // unreachable code
|
||||
|
||||
// Turn MSVC /analyze rules that generate too much noise. TODO: fix in the tool.
|
||||
#pragma warning(disable : 26495) // uninitalized member when constructor calls constructor
|
||||
#pragma warning(disable : 26446) // parser bug does not allow attributes on some templates
|
||||
|
||||
#if _MSC_VER < 1910
|
||||
#pragma push_macro("constexpr")
|
||||
#define constexpr /*constexpr*/
|
||||
#define GSL_USE_STATIC_CONSTEXPR_WORKAROUND
|
||||
|
||||
#endif // _MSC_VER < 1910
|
||||
#endif // _MSC_VER
|
||||
|
||||
// See if we have enough C++17 power to use a static constexpr data member
|
||||
// without needing an out-of-line definition
|
||||
#if !(defined(__cplusplus) && (__cplusplus >= 201703L))
|
||||
#define GSL_USE_STATIC_CONSTEXPR_WORKAROUND
|
||||
#endif // !(defined(__cplusplus) && (__cplusplus >= 201703L))
|
||||
|
||||
// GCC 7 does not like the signed unsigned missmatch (size_t ptrdiff_t)
|
||||
// While there is a conversion from signed to unsigned, it happens at
|
||||
// compiletime, so the compiler wouldn't have to warn indiscriminently, but
|
||||
// could check if the source value actually doesn't fit into the target type
|
||||
// and only warn in those cases.
|
||||
#if defined(__GNUC__) && __GNUC__ > 6
|
||||
#pragma GCC diagnostic push
|
||||
#pragma GCC diagnostic ignored "-Wsign-conversion"
|
||||
#endif
|
||||
|
||||
namespace gsl
|
||||
{
|
||||
|
||||
// [views.constants], constants
|
||||
constexpr const std::ptrdiff_t dynamic_extent = -1;
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent = dynamic_extent>
|
||||
class span;
|
||||
|
||||
// implementation details
|
||||
namespace details
|
||||
{
|
||||
template <class T>
|
||||
struct is_span_oracle : std::false_type
|
||||
{
|
||||
};
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
struct is_span_oracle<gsl::span<ElementType, Extent>> : std::true_type
|
||||
{
|
||||
};
|
||||
|
||||
template <class T>
|
||||
struct is_span : public is_span_oracle<std::remove_cv_t<T>>
|
||||
{
|
||||
};
|
||||
|
||||
template <class T>
|
||||
struct is_std_array_oracle : std::false_type
|
||||
{
|
||||
};
|
||||
|
||||
template <class ElementType, std::size_t Extent>
|
||||
struct is_std_array_oracle<std::array<ElementType, Extent>> : std::true_type
|
||||
{
|
||||
};
|
||||
|
||||
template <class T>
|
||||
struct is_std_array : public is_std_array_oracle<std::remove_cv_t<T>>
|
||||
{
|
||||
};
|
||||
|
||||
template <std::ptrdiff_t From, std::ptrdiff_t To>
|
||||
struct is_allowed_extent_conversion
|
||||
: public std::integral_constant<bool, From == To || From == gsl::dynamic_extent ||
|
||||
To == gsl::dynamic_extent>
|
||||
{
|
||||
};
|
||||
|
||||
template <class From, class To>
|
||||
struct is_allowed_element_type_conversion
|
||||
: public std::integral_constant<bool, std::is_convertible<From (*)[], To (*)[]>::value>
|
||||
{
|
||||
};
|
||||
|
||||
template <class Span, bool IsConst>
|
||||
class span_iterator
|
||||
{
|
||||
using element_type_ = typename Span::element_type;
|
||||
|
||||
public:
|
||||
#ifdef _MSC_VER
|
||||
// Tell Microsoft standard library that span_iterators are checked.
|
||||
using _Unchecked_type = typename Span::pointer;
|
||||
#endif
|
||||
|
||||
using iterator_category = std::random_access_iterator_tag;
|
||||
using value_type = std::remove_cv_t<element_type_>;
|
||||
using difference_type = typename Span::index_type;
|
||||
|
||||
using reference = std::conditional_t<IsConst, const element_type_, element_type_>&;
|
||||
using pointer = std::add_pointer_t<reference>;
|
||||
|
||||
span_iterator() = default;
|
||||
|
||||
constexpr span_iterator(const Span* span, typename Span::index_type idx) noexcept
|
||||
: span_(span), index_(idx)
|
||||
{}
|
||||
|
||||
friend span_iterator<Span, true>;
|
||||
template <bool B, std::enable_if_t<!B && IsConst>* = nullptr>
|
||||
constexpr span_iterator(const span_iterator<Span, B>& other) noexcept
|
||||
: span_iterator(other.span_, other.index_)
|
||||
{}
|
||||
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
constexpr reference operator*() const
|
||||
{
|
||||
Expects(index_ != span_->size());
|
||||
return *(span_->data() + index_);
|
||||
}
|
||||
|
||||
constexpr pointer operator->() const
|
||||
{
|
||||
Expects(index_ != span_->size());
|
||||
return span_->data() + index_;
|
||||
}
|
||||
|
||||
constexpr span_iterator& operator++()
|
||||
{
|
||||
Expects(0 <= index_ && index_ != span_->size());
|
||||
++index_;
|
||||
return *this;
|
||||
}
|
||||
|
||||
constexpr span_iterator operator++(int)
|
||||
{
|
||||
auto ret = *this;
|
||||
++(*this);
|
||||
return ret;
|
||||
}
|
||||
|
||||
constexpr span_iterator& operator--()
|
||||
{
|
||||
Expects(index_ != 0 && index_ <= span_->size());
|
||||
--index_;
|
||||
return *this;
|
||||
}
|
||||
|
||||
constexpr span_iterator operator--(int)
|
||||
{
|
||||
auto ret = *this;
|
||||
--(*this);
|
||||
return ret;
|
||||
}
|
||||
|
||||
constexpr span_iterator operator+(difference_type n) const
|
||||
{
|
||||
auto ret = *this;
|
||||
return ret += n;
|
||||
}
|
||||
|
||||
friend constexpr span_iterator operator+(difference_type n, span_iterator const& rhs)
|
||||
{
|
||||
return rhs + n;
|
||||
}
|
||||
|
||||
constexpr span_iterator& operator+=(difference_type n)
|
||||
{
|
||||
Expects((index_ + n) >= 0 && (index_ + n) <= span_->size());
|
||||
index_ += n;
|
||||
return *this;
|
||||
}
|
||||
|
||||
constexpr span_iterator operator-(difference_type n) const
|
||||
{
|
||||
auto ret = *this;
|
||||
return ret -= n;
|
||||
}
|
||||
|
||||
constexpr span_iterator& operator-=(difference_type n) { return *this += -n; }
|
||||
|
||||
constexpr difference_type operator-(span_iterator rhs) const
|
||||
{
|
||||
Expects(span_ == rhs.span_);
|
||||
return index_ - rhs.index_;
|
||||
}
|
||||
|
||||
constexpr reference operator[](difference_type n) const { return *(*this + n); }
|
||||
|
||||
constexpr friend bool operator==(span_iterator lhs, span_iterator rhs) noexcept
|
||||
{
|
||||
return lhs.span_ == rhs.span_ && lhs.index_ == rhs.index_;
|
||||
}
|
||||
|
||||
constexpr friend bool operator!=(span_iterator lhs, span_iterator rhs) noexcept
|
||||
{
|
||||
return !(lhs == rhs);
|
||||
}
|
||||
|
||||
constexpr friend bool operator<(span_iterator lhs, span_iterator rhs) noexcept
|
||||
{
|
||||
return lhs.index_ < rhs.index_;
|
||||
}
|
||||
|
||||
constexpr friend bool operator<=(span_iterator lhs, span_iterator rhs) noexcept
|
||||
{
|
||||
return !(rhs < lhs);
|
||||
}
|
||||
|
||||
constexpr friend bool operator>(span_iterator lhs, span_iterator rhs) noexcept
|
||||
{
|
||||
return rhs < lhs;
|
||||
}
|
||||
|
||||
constexpr friend bool operator>=(span_iterator lhs, span_iterator rhs) noexcept
|
||||
{
|
||||
return !(rhs > lhs);
|
||||
}
|
||||
|
||||
#ifdef _MSC_VER
|
||||
// MSVC++ iterator debugging support; allows STL algorithms in 15.8+
|
||||
// to unwrap span_iterator to a pointer type after a range check in STL
|
||||
// algorithm calls
|
||||
friend constexpr void _Verify_range(span_iterator lhs, span_iterator rhs) noexcept
|
||||
{ // test that [lhs, rhs) forms a valid range inside an STL algorithm
|
||||
Expects(lhs.span_ == rhs.span_ // range spans have to match
|
||||
&& lhs.index_ <= rhs.index_); // range must not be transposed
|
||||
}
|
||||
|
||||
constexpr void _Verify_offset(const difference_type n) const noexcept
|
||||
{ // test that the iterator *this + n is a valid range in an STL
|
||||
// algorithm call
|
||||
Expects((index_ + n) >= 0 && (index_ + n) <= span_->size());
|
||||
}
|
||||
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
constexpr pointer _Unwrapped() const noexcept
|
||||
{ // after seeking *this to a high water mark, or using one of the
|
||||
// _Verify_xxx functions above, unwrap this span_iterator to a raw
|
||||
// pointer
|
||||
return span_->data() + index_;
|
||||
}
|
||||
|
||||
// Tell the STL that span_iterator should not be unwrapped if it can't
|
||||
// validate in advance, even in release / optimized builds:
|
||||
#if defined(GSL_USE_STATIC_CONSTEXPR_WORKAROUND)
|
||||
static constexpr const bool _Unwrap_when_unverified = false;
|
||||
#else
|
||||
static constexpr bool _Unwrap_when_unverified = false;
|
||||
#endif
|
||||
GSL_SUPPRESS(con.3) // NO-FORMAT: attribute // TODO: false positive
|
||||
constexpr void _Seek_to(const pointer p) noexcept
|
||||
{ // adjust the position of *this to previously verified location p
|
||||
// after _Unwrapped
|
||||
index_ = p - span_->data();
|
||||
}
|
||||
#endif
|
||||
|
||||
protected:
|
||||
const Span* span_ = nullptr;
|
||||
std::ptrdiff_t index_ = 0;
|
||||
};
|
||||
|
||||
template <std::ptrdiff_t Ext>
|
||||
class extent_type
|
||||
{
|
||||
public:
|
||||
using index_type = std::ptrdiff_t;
|
||||
|
||||
static_assert(Ext >= 0, "A fixed-size span must be >= 0 in size.");
|
||||
|
||||
constexpr extent_type() noexcept {}
|
||||
|
||||
template <index_type Other>
|
||||
constexpr extent_type(extent_type<Other> ext)
|
||||
{
|
||||
static_assert(Other == Ext || Other == dynamic_extent,
|
||||
"Mismatch between fixed-size extent and size of initializing data.");
|
||||
Expects(ext.size() == Ext);
|
||||
}
|
||||
|
||||
constexpr extent_type(index_type size) { Expects(size == Ext); }
|
||||
|
||||
constexpr index_type size() const noexcept { return Ext; }
|
||||
};
|
||||
|
||||
template <>
|
||||
class extent_type<dynamic_extent>
|
||||
{
|
||||
public:
|
||||
using index_type = std::ptrdiff_t;
|
||||
|
||||
template <index_type Other>
|
||||
explicit constexpr extent_type(extent_type<Other> ext) : size_(ext.size())
|
||||
{}
|
||||
|
||||
explicit constexpr extent_type(index_type size) : size_(size) { Expects(size >= 0); }
|
||||
|
||||
constexpr index_type size() const noexcept { return size_; }
|
||||
|
||||
private:
|
||||
index_type size_;
|
||||
};
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent, std::ptrdiff_t Offset, std::ptrdiff_t Count>
|
||||
struct calculate_subspan_type
|
||||
{
|
||||
using type = span<ElementType, Count != dynamic_extent
|
||||
? Count
|
||||
: (Extent != dynamic_extent ? Extent - Offset : Extent)>;
|
||||
};
|
||||
} // namespace details
|
||||
|
||||
// [span], class template span
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
class span
|
||||
{
|
||||
public:
|
||||
// constants and types
|
||||
using element_type = ElementType;
|
||||
using value_type = std::remove_cv_t<ElementType>;
|
||||
using index_type = std::ptrdiff_t;
|
||||
using pointer = element_type*;
|
||||
using reference = element_type&;
|
||||
|
||||
using iterator = details::span_iterator<span<ElementType, Extent>, false>;
|
||||
using const_iterator = details::span_iterator<span<ElementType, Extent>, true>;
|
||||
using reverse_iterator = std::reverse_iterator<iterator>;
|
||||
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
|
||||
|
||||
using size_type = index_type;
|
||||
|
||||
#if defined(GSL_USE_STATIC_CONSTEXPR_WORKAROUND)
|
||||
static constexpr const index_type extent{Extent};
|
||||
#else
|
||||
static constexpr index_type extent{Extent};
|
||||
#endif
|
||||
|
||||
// [span.cons], span constructors, copy, assignment, and destructor
|
||||
template <bool Dependent = false,
|
||||
// "Dependent" is needed to make "std::enable_if_t<Dependent || Extent <= 0>" SFINAE,
|
||||
// since "std::enable_if_t<Extent <= 0>" is ill-formed when Extent is greater than 0.
|
||||
class = std::enable_if_t<(Dependent || Extent <= 0)>>
|
||||
constexpr span() noexcept : storage_(nullptr, details::extent_type<0>())
|
||||
{}
|
||||
|
||||
constexpr span(pointer ptr, index_type count) : storage_(ptr, count) {}
|
||||
|
||||
constexpr span(pointer firstElem, pointer lastElem)
|
||||
: storage_(firstElem, std::distance(firstElem, lastElem))
|
||||
{}
|
||||
|
||||
template <std::size_t N>
|
||||
constexpr span(element_type (&arr)[N]) noexcept
|
||||
: storage_(KnownNotNull{std::addressof(arr[0])}, details::extent_type<N>())
|
||||
{}
|
||||
|
||||
template <std::size_t N, class = std::enable_if_t<(N > 0)>>
|
||||
constexpr span(std::array<std::remove_const_t<element_type>, N>& arr) noexcept
|
||||
: storage_(KnownNotNull{arr.data()}, details::extent_type<N>())
|
||||
{
|
||||
}
|
||||
|
||||
constexpr span(std::array<std::remove_const_t<element_type>, 0>&) noexcept
|
||||
: storage_(static_cast<pointer>(nullptr), details::extent_type<0>())
|
||||
{
|
||||
}
|
||||
|
||||
template <std::size_t N, class = std::enable_if_t<(N > 0)>>
|
||||
constexpr span(const std::array<std::remove_const_t<element_type>, N>& arr) noexcept
|
||||
: storage_(KnownNotNull{arr.data()}, details::extent_type<N>())
|
||||
{
|
||||
}
|
||||
|
||||
constexpr span(const std::array<std::remove_const_t<element_type>, 0>&) noexcept
|
||||
: storage_(static_cast<pointer>(nullptr), details::extent_type<0>())
|
||||
{
|
||||
}
|
||||
|
||||
// NB: the SFINAE here uses .data() as a incomplete/imperfect proxy for the requirement
|
||||
// on Container to be a contiguous sequence container.
|
||||
template <class Container,
|
||||
class = std::enable_if_t<
|
||||
!details::is_span<Container>::value && !details::is_std_array<Container>::value &&
|
||||
std::is_convertible<typename Container::pointer, pointer>::value &&
|
||||
std::is_convertible<typename Container::pointer,
|
||||
decltype(std::declval<Container>().data())>::value>>
|
||||
constexpr span(Container& cont) : span(cont.data(), narrow<index_type>(cont.size()))
|
||||
{}
|
||||
|
||||
template <class Container,
|
||||
class = std::enable_if_t<
|
||||
std::is_const<element_type>::value && !details::is_span<Container>::value &&
|
||||
std::is_convertible<typename Container::pointer, pointer>::value &&
|
||||
std::is_convertible<typename Container::pointer,
|
||||
decltype(std::declval<Container>().data())>::value>>
|
||||
constexpr span(const Container& cont) : span(cont.data(), narrow<index_type>(cont.size()))
|
||||
{}
|
||||
|
||||
constexpr span(const span& other) noexcept = default;
|
||||
|
||||
template <
|
||||
class OtherElementType, std::ptrdiff_t OtherExtent,
|
||||
class = std::enable_if_t<
|
||||
details::is_allowed_extent_conversion<OtherExtent, Extent>::value &&
|
||||
details::is_allowed_element_type_conversion<OtherElementType, element_type>::value>>
|
||||
constexpr span(const span<OtherElementType, OtherExtent>& other)
|
||||
: storage_(other.data(), details::extent_type<OtherExtent>(other.size()))
|
||||
{}
|
||||
|
||||
~span() noexcept = default;
|
||||
constexpr span& operator=(const span& other) noexcept = default;
|
||||
|
||||
// [span.sub], span subviews
|
||||
template <std::ptrdiff_t Count>
|
||||
constexpr span<element_type, Count> first() const
|
||||
{
|
||||
Expects(Count >= 0 && Count <= size());
|
||||
return {data(), Count};
|
||||
}
|
||||
|
||||
template <std::ptrdiff_t Count>
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
constexpr span<element_type, Count> last() const
|
||||
{
|
||||
Expects(Count >= 0 && size() - Count >= 0);
|
||||
return {data() + (size() - Count), Count};
|
||||
}
|
||||
|
||||
template <std::ptrdiff_t Offset, std::ptrdiff_t Count = dynamic_extent>
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
constexpr auto subspan() const ->
|
||||
typename details::calculate_subspan_type<ElementType, Extent, Offset, Count>::type
|
||||
{
|
||||
Expects((Offset >= 0 && size() - Offset >= 0) &&
|
||||
(Count == dynamic_extent || (Count >= 0 && Offset + Count <= size())));
|
||||
|
||||
return {data() + Offset, Count == dynamic_extent ? size() - Offset : Count};
|
||||
}
|
||||
|
||||
constexpr span<element_type, dynamic_extent> first(index_type count) const
|
||||
{
|
||||
Expects(count >= 0 && count <= size());
|
||||
return {data(), count};
|
||||
}
|
||||
|
||||
constexpr span<element_type, dynamic_extent> last(index_type count) const
|
||||
{
|
||||
return make_subspan(size() - count, dynamic_extent, subspan_selector<Extent>{});
|
||||
}
|
||||
|
||||
constexpr span<element_type, dynamic_extent> subspan(index_type offset,
|
||||
index_type count = dynamic_extent) const
|
||||
{
|
||||
return make_subspan(offset, count, subspan_selector<Extent>{});
|
||||
}
|
||||
|
||||
// [span.obs], span observers
|
||||
constexpr index_type size() const noexcept { return storage_.size(); }
|
||||
constexpr index_type size_bytes() const noexcept
|
||||
{
|
||||
return size() * narrow_cast<index_type>(sizeof(element_type));
|
||||
}
|
||||
constexpr bool empty() const noexcept { return size() == 0; }
|
||||
|
||||
// [span.elem], span element access
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
constexpr reference operator[](index_type idx) const
|
||||
{
|
||||
Expects(CheckRange(idx, storage_.size()));
|
||||
return data()[idx];
|
||||
}
|
||||
|
||||
constexpr reference at(index_type idx) const { return this->operator[](idx); }
|
||||
constexpr reference operator()(index_type idx) const { return this->operator[](idx); }
|
||||
constexpr pointer data() const noexcept { return storage_.data(); }
|
||||
|
||||
// [span.iter], span iterator support
|
||||
constexpr iterator begin() const noexcept { return {this, 0}; }
|
||||
constexpr iterator end() const noexcept { return {this, size()}; }
|
||||
|
||||
constexpr const_iterator cbegin() const noexcept { return {this, 0}; }
|
||||
constexpr const_iterator cend() const noexcept { return {this, size()}; }
|
||||
|
||||
constexpr reverse_iterator rbegin() const noexcept { return reverse_iterator{end()}; }
|
||||
constexpr reverse_iterator rend() const noexcept { return reverse_iterator{begin()}; }
|
||||
|
||||
constexpr const_reverse_iterator crbegin() const noexcept
|
||||
{
|
||||
return const_reverse_iterator{cend()};
|
||||
}
|
||||
constexpr const_reverse_iterator crend() const noexcept
|
||||
{
|
||||
return const_reverse_iterator{cbegin()};
|
||||
}
|
||||
|
||||
#ifdef _MSC_VER
|
||||
// Tell MSVC how to unwrap spans in range-based-for
|
||||
constexpr pointer _Unchecked_begin() const noexcept { return data(); }
|
||||
constexpr pointer _Unchecked_end() const noexcept
|
||||
{
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
return data() + size();
|
||||
}
|
||||
#endif // _MSC_VER
|
||||
|
||||
private:
|
||||
static constexpr bool CheckRange(index_type idx, index_type size) noexcept
|
||||
{
|
||||
// Optimization:
|
||||
//
|
||||
// idx >= 0 && idx < size
|
||||
// =>
|
||||
// static_cast<size_t>(idx) < static_cast<size_t>(size)
|
||||
//
|
||||
// because size >=0 by span construction, and negative idx will
|
||||
// wrap around to a value always greater than size when casted.
|
||||
|
||||
// check if we have enough space to wrap around
|
||||
#if defined(__cpp_if_constexpr)
|
||||
if constexpr (sizeof(index_type) <= sizeof(size_t))
|
||||
#else
|
||||
if (sizeof(index_type) <= sizeof(size_t))
|
||||
#endif
|
||||
{
|
||||
return narrow_cast<size_t>(idx) < narrow_cast<size_t>(size);
|
||||
}
|
||||
else
|
||||
{
|
||||
return idx >= 0 && idx < size;
|
||||
}
|
||||
}
|
||||
|
||||
// Needed to remove unnecessary null check in subspans
|
||||
struct KnownNotNull
|
||||
{
|
||||
pointer p;
|
||||
};
|
||||
|
||||
// this implementation detail class lets us take advantage of the
|
||||
// empty base class optimization to pay for only storage of a single
|
||||
// pointer in the case of fixed-size spans
|
||||
template <class ExtentType>
|
||||
class storage_type : public ExtentType
|
||||
{
|
||||
public:
|
||||
// KnownNotNull parameter is needed to remove unnecessary null check
|
||||
// in subspans and constructors from arrays
|
||||
template <class OtherExtentType>
|
||||
constexpr storage_type(KnownNotNull data, OtherExtentType ext)
|
||||
: ExtentType(ext), data_(data.p)
|
||||
{
|
||||
Expects(ExtentType::size() >= 0);
|
||||
}
|
||||
|
||||
template <class OtherExtentType>
|
||||
constexpr storage_type(pointer data, OtherExtentType ext) : ExtentType(ext), data_(data)
|
||||
{
|
||||
Expects(ExtentType::size() >= 0);
|
||||
Expects(data || ExtentType::size() == 0);
|
||||
}
|
||||
|
||||
constexpr pointer data() const noexcept { return data_; }
|
||||
|
||||
private:
|
||||
pointer data_;
|
||||
};
|
||||
|
||||
storage_type<details::extent_type<Extent>> storage_;
|
||||
|
||||
// The rest is needed to remove unnecessary null check
|
||||
// in subspans and constructors from arrays
|
||||
constexpr span(KnownNotNull ptr, index_type count) : storage_(ptr, count) {}
|
||||
|
||||
template <std::ptrdiff_t CallerExtent>
|
||||
class subspan_selector
|
||||
{
|
||||
};
|
||||
|
||||
template <std::ptrdiff_t CallerExtent>
|
||||
span<element_type, dynamic_extent> make_subspan(index_type offset, index_type count,
|
||||
subspan_selector<CallerExtent>) const
|
||||
{
|
||||
const span<element_type, dynamic_extent> tmp(*this);
|
||||
return tmp.subspan(offset, count);
|
||||
}
|
||||
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
|
||||
span<element_type, dynamic_extent> make_subspan(index_type offset, index_type count,
|
||||
subspan_selector<dynamic_extent>) const
|
||||
{
|
||||
Expects(offset >= 0 && size() - offset >= 0);
|
||||
|
||||
if (count == dynamic_extent) { return {KnownNotNull{data() + offset}, size() - offset}; }
|
||||
|
||||
Expects(count >= 0 && size() - offset >= count);
|
||||
return {KnownNotNull{data() + offset}, count};
|
||||
}
|
||||
};
|
||||
|
||||
#if defined(GSL_USE_STATIC_CONSTEXPR_WORKAROUND)
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
constexpr const typename span<ElementType, Extent>::index_type span<ElementType, Extent>::extent;
|
||||
#endif
|
||||
|
||||
// [span.comparison], span comparison operators
|
||||
template <class ElementType, std::ptrdiff_t FirstExtent, std::ptrdiff_t SecondExtent>
|
||||
constexpr bool operator==(span<ElementType, FirstExtent> l, span<ElementType, SecondExtent> r)
|
||||
{
|
||||
return std::equal(l.begin(), l.end(), r.begin(), r.end());
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
constexpr bool operator!=(span<ElementType, Extent> l, span<ElementType, Extent> r)
|
||||
{
|
||||
return !(l == r);
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
constexpr bool operator<(span<ElementType, Extent> l, span<ElementType, Extent> r)
|
||||
{
|
||||
return std::lexicographical_compare(l.begin(), l.end(), r.begin(), r.end());
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
constexpr bool operator<=(span<ElementType, Extent> l, span<ElementType, Extent> r)
|
||||
{
|
||||
return !(l > r);
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
constexpr bool operator>(span<ElementType, Extent> l, span<ElementType, Extent> r)
|
||||
{
|
||||
return r < l;
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
constexpr bool operator>=(span<ElementType, Extent> l, span<ElementType, Extent> r)
|
||||
{
|
||||
return !(l < r);
|
||||
}
|
||||
|
||||
namespace details
|
||||
{
|
||||
// if we only supported compilers with good constexpr support then
|
||||
// this pair of classes could collapse down to a constexpr function
|
||||
|
||||
// we should use a narrow_cast<> to go to std::size_t, but older compilers may not see it as
|
||||
// constexpr
|
||||
// and so will fail compilation of the template
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
struct calculate_byte_size
|
||||
: std::integral_constant<std::ptrdiff_t,
|
||||
static_cast<std::ptrdiff_t>(sizeof(ElementType) *
|
||||
static_cast<std::size_t>(Extent))>
|
||||
{
|
||||
};
|
||||
|
||||
template <class ElementType>
|
||||
struct calculate_byte_size<ElementType, dynamic_extent>
|
||||
: std::integral_constant<std::ptrdiff_t, dynamic_extent>
|
||||
{
|
||||
};
|
||||
} // namespace details
|
||||
|
||||
// [span.objectrep], views of object representation
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
span<const byte, details::calculate_byte_size<ElementType, Extent>::value>
|
||||
as_bytes(span<ElementType, Extent> s) noexcept
|
||||
{
|
||||
GSL_SUPPRESS(type.1) // NO-FORMAT: attribute
|
||||
return {reinterpret_cast<const byte*>(s.data()), s.size_bytes()};
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent,
|
||||
class = std::enable_if_t<!std::is_const<ElementType>::value>>
|
||||
span<byte, details::calculate_byte_size<ElementType, Extent>::value>
|
||||
as_writeable_bytes(span<ElementType, Extent> s) noexcept
|
||||
{
|
||||
GSL_SUPPRESS(type.1) // NO-FORMAT: attribute
|
||||
return {reinterpret_cast<byte*>(s.data()), s.size_bytes()};
|
||||
}
|
||||
|
||||
//
|
||||
// make_span() - Utility functions for creating spans
|
||||
//
|
||||
template <class ElementType>
|
||||
constexpr span<ElementType> make_span(ElementType* ptr,
|
||||
typename span<ElementType>::index_type count)
|
||||
{
|
||||
return span<ElementType>(ptr, count);
|
||||
}
|
||||
|
||||
template <class ElementType>
|
||||
constexpr span<ElementType> make_span(ElementType* firstElem, ElementType* lastElem)
|
||||
{
|
||||
return span<ElementType>(firstElem, lastElem);
|
||||
}
|
||||
|
||||
template <class ElementType, std::size_t N>
|
||||
constexpr span<ElementType, N> make_span(ElementType (&arr)[N]) noexcept
|
||||
{
|
||||
return span<ElementType, N>(arr);
|
||||
}
|
||||
|
||||
template <class Container>
|
||||
constexpr span<typename Container::value_type> make_span(Container& cont)
|
||||
{
|
||||
return span<typename Container::value_type>(cont);
|
||||
}
|
||||
|
||||
template <class Container>
|
||||
constexpr span<const typename Container::value_type> make_span(const Container& cont)
|
||||
{
|
||||
return span<const typename Container::value_type>(cont);
|
||||
}
|
||||
|
||||
template <class Ptr>
|
||||
constexpr span<typename Ptr::element_type> make_span(Ptr& cont, std::ptrdiff_t count)
|
||||
{
|
||||
return span<typename Ptr::element_type>(cont, count);
|
||||
}
|
||||
|
||||
template <class Ptr>
|
||||
constexpr span<typename Ptr::element_type> make_span(Ptr& cont)
|
||||
{
|
||||
return span<typename Ptr::element_type>(cont);
|
||||
}
|
||||
|
||||
// Specialization of gsl::at for span
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
constexpr ElementType& at(span<ElementType, Extent> s, index i)
|
||||
{
|
||||
// No bounds checking here because it is done in span::operator[] called below
|
||||
return s[i];
|
||||
}
|
||||
|
||||
} // namespace gsl
|
||||
|
||||
#if defined(_MSC_VER) && !defined(__clang__)
|
||||
#if _MSC_VER < 1910
|
||||
#undef constexpr
|
||||
#pragma pop_macro("constexpr")
|
||||
|
||||
#endif // _MSC_VER < 1910
|
||||
|
||||
#pragma warning(pop)
|
||||
#endif // _MSC_VER
|
||||
|
||||
#if defined(__GNUC__) && __GNUC__ > 6
|
||||
#pragma GCC diagnostic pop
|
||||
#endif // __GNUC__ > 6
|
||||
|
||||
#endif // GSL_SPAN_H
|
||||
@@ -1,722 +0,0 @@
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
|
||||
//
|
||||
// This code is licensed under the MIT License (MIT).
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
//
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifndef GSL_STRING_SPAN_H
|
||||
#define GSL_STRING_SPAN_H
|
||||
|
||||
#include <gsl/gsl_assert> // for Ensures, Expects
|
||||
#include <gsl/gsl_util> // for narrow_cast
|
||||
#include <gsl/span> // for operator!=, operator==, dynamic_extent
|
||||
#include <gsl/pointers> // for not_null
|
||||
|
||||
#include <algorithm> // for equal, lexicographical_compare
|
||||
#include <array> // for array
|
||||
#include <cstddef> // for ptrdiff_t, size_t, nullptr_t
|
||||
#include <cstdint> // for PTRDIFF_MAX
|
||||
#include <cstring>
|
||||
#include <string> // for basic_string, allocator, char_traits
|
||||
#include <type_traits> // for declval, is_convertible, enable_if_t, add_...
|
||||
|
||||
#if defined(_MSC_VER) && !defined(__clang__)
|
||||
#pragma warning(push)
|
||||
|
||||
// Turn MSVC /analyze rules that generate too much noise. TODO: fix in the tool.
|
||||
#pragma warning(disable : 26446) // TODO: bug in parser - attributes and templates
|
||||
#pragma warning(disable : 26481) // TODO: suppress does not work inside templates sometimes
|
||||
|
||||
#if _MSC_VER < 1910
|
||||
#pragma push_macro("constexpr")
|
||||
#define constexpr /*constexpr*/
|
||||
|
||||
#endif // _MSC_VER < 1910
|
||||
#endif // _MSC_VER
|
||||
|
||||
namespace gsl
|
||||
{
|
||||
//
|
||||
// czstring and wzstring
|
||||
//
|
||||
// These are "tag" typedefs for C-style strings (i.e. null-terminated character arrays)
|
||||
// that allow static analysis to help find bugs.
|
||||
//
|
||||
// There are no additional features/semantics that we can find a way to add inside the
|
||||
// type system for these types that will not either incur significant runtime costs or
|
||||
// (sometimes needlessly) break existing programs when introduced.
|
||||
//
|
||||
|
||||
template <typename CharT, std::ptrdiff_t Extent = dynamic_extent>
|
||||
using basic_zstring = CharT*;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using czstring = basic_zstring<const char, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using cwzstring = basic_zstring<const wchar_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using cu16zstring = basic_zstring<const char16_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using cu32zstring = basic_zstring<const char32_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using zstring = basic_zstring<char, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using wzstring = basic_zstring<wchar_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using u16zstring = basic_zstring<char16_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using u32zstring = basic_zstring<char32_t, Extent>;
|
||||
|
||||
namespace details
|
||||
{
|
||||
template <class CharT>
|
||||
std::ptrdiff_t string_length(const CharT* str, std::ptrdiff_t n)
|
||||
{
|
||||
if (str == nullptr || n <= 0) return 0;
|
||||
|
||||
const span<const CharT> str_span{str, n};
|
||||
|
||||
std::ptrdiff_t len = 0;
|
||||
while (len < n && str_span[len]) len++;
|
||||
|
||||
return len;
|
||||
}
|
||||
} // namespace details
|
||||
|
||||
//
|
||||
// ensure_sentinel()
|
||||
//
|
||||
// Provides a way to obtain an span from a contiguous sequence
|
||||
// that ends with a (non-inclusive) sentinel value.
|
||||
//
|
||||
// Will fail-fast if sentinel cannot be found before max elements are examined.
|
||||
//
|
||||
template <typename T, const T Sentinel>
|
||||
span<T, dynamic_extent> ensure_sentinel(T* seq, std::ptrdiff_t max = PTRDIFF_MAX)
|
||||
{
|
||||
Ensures(seq != nullptr);
|
||||
|
||||
GSL_SUPPRESS(f.23) // NO-FORMAT: attribute // TODO: false positive // TODO: suppress does not work
|
||||
auto cur = seq;
|
||||
Ensures(cur != nullptr); // workaround for removing the warning
|
||||
|
||||
GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute // TODO: suppress does not work
|
||||
while ((cur - seq) < max && *cur != Sentinel) ++cur;
|
||||
Ensures(*cur == Sentinel);
|
||||
return {seq, cur - seq};
|
||||
}
|
||||
|
||||
//
|
||||
// ensure_z - creates a span for a zero terminated strings.
|
||||
// Will fail fast if a null-terminator cannot be found before
|
||||
// the limit of size_type.
|
||||
//
|
||||
template <typename CharT>
|
||||
span<CharT, dynamic_extent> ensure_z(CharT* const& sz, std::ptrdiff_t max = PTRDIFF_MAX)
|
||||
{
|
||||
return ensure_sentinel<CharT, CharT(0)>(sz, max);
|
||||
}
|
||||
|
||||
template <typename CharT, std::size_t N>
|
||||
span<CharT, dynamic_extent> ensure_z(CharT (&sz)[N])
|
||||
{
|
||||
return ensure_z(&sz[0], narrow_cast<std::ptrdiff_t>(N));
|
||||
}
|
||||
|
||||
template <class Cont>
|
||||
span<typename std::remove_pointer<typename Cont::pointer>::type, dynamic_extent>
|
||||
ensure_z(Cont& cont)
|
||||
{
|
||||
return ensure_z(cont.data(), narrow_cast<std::ptrdiff_t>(cont.size()));
|
||||
}
|
||||
|
||||
template <typename CharT, std::ptrdiff_t>
|
||||
class basic_string_span;
|
||||
|
||||
namespace details {
|
||||
template <typename T>
|
||||
struct is_basic_string_span_oracle : std::false_type
|
||||
{
|
||||
};
|
||||
|
||||
template <typename CharT, std::ptrdiff_t Extent>
|
||||
struct is_basic_string_span_oracle<basic_string_span<CharT, Extent>> : std::true_type
|
||||
{
|
||||
};
|
||||
|
||||
template <typename T>
|
||||
struct is_basic_string_span : is_basic_string_span_oracle<std::remove_cv_t<T>>
|
||||
{
|
||||
};
|
||||
} // namespace details
|
||||
|
||||
//
|
||||
// string_span and relatives
|
||||
//
|
||||
template <typename CharT, std::ptrdiff_t Extent = dynamic_extent>
|
||||
class basic_string_span
|
||||
{
|
||||
public:
|
||||
using element_type = CharT;
|
||||
using value_type = std::remove_cv_t<element_type>;
|
||||
using pointer = std::add_pointer_t<element_type>;
|
||||
using reference = std::add_lvalue_reference_t<element_type>;
|
||||
using const_reference = std::add_lvalue_reference_t<std::add_const_t<element_type>>;
|
||||
using impl_type = span<element_type, Extent>;
|
||||
|
||||
using index_type = typename impl_type::index_type;
|
||||
using iterator = typename impl_type::iterator;
|
||||
using const_iterator = typename impl_type::const_iterator;
|
||||
using reverse_iterator = typename impl_type::reverse_iterator;
|
||||
using const_reverse_iterator = typename impl_type::const_reverse_iterator;
|
||||
|
||||
using size_type = index_type;
|
||||
|
||||
// default (empty)
|
||||
constexpr basic_string_span() noexcept = default;
|
||||
|
||||
// copy
|
||||
constexpr basic_string_span(const basic_string_span& other) noexcept = default;
|
||||
|
||||
// assign
|
||||
constexpr basic_string_span& operator=(const basic_string_span& other) noexcept = default;
|
||||
|
||||
constexpr basic_string_span(pointer ptr, index_type length) : span_(ptr, length) {}
|
||||
constexpr basic_string_span(pointer firstElem, pointer lastElem) : span_(firstElem, lastElem) {}
|
||||
|
||||
// From static arrays - if 0-terminated, remove 0 from the view
|
||||
// All other containers allow 0s within the length, so we do not remove them
|
||||
template <std::size_t N>
|
||||
constexpr basic_string_span(element_type (&arr)[N]) : span_(remove_z(arr))
|
||||
{}
|
||||
|
||||
template <std::size_t N, class ArrayElementType = std::remove_const_t<element_type>>
|
||||
constexpr basic_string_span(std::array<ArrayElementType, N>& arr) noexcept : span_(arr)
|
||||
{}
|
||||
|
||||
template <std::size_t N, class ArrayElementType = std::remove_const_t<element_type>>
|
||||
constexpr basic_string_span(const std::array<ArrayElementType, N>& arr) noexcept : span_(arr)
|
||||
{}
|
||||
|
||||
// Container signature should work for basic_string after C++17 version exists
|
||||
template <class Traits, class Allocator>
|
||||
// GSL_SUPPRESS(bounds.4) // NO-FORMAT: attribute // TODO: parser bug
|
||||
constexpr basic_string_span(std::basic_string<element_type, Traits, Allocator>& str)
|
||||
: span_(&str[0], narrow_cast<std::ptrdiff_t>(str.length()))
|
||||
{}
|
||||
|
||||
template <class Traits, class Allocator>
|
||||
constexpr basic_string_span(const std::basic_string<element_type, Traits, Allocator>& str)
|
||||
: span_(&str[0], str.length())
|
||||
{}
|
||||
|
||||
// from containers. Containers must have a pointer type and data() function signatures
|
||||
template <class Container,
|
||||
class = std::enable_if_t<
|
||||
!details::is_basic_string_span<Container>::value &&
|
||||
std::is_convertible<typename Container::pointer, pointer>::value &&
|
||||
std::is_convertible<typename Container::pointer,
|
||||
decltype(std::declval<Container>().data())>::value>>
|
||||
constexpr basic_string_span(Container& cont) : span_(cont)
|
||||
{}
|
||||
|
||||
template <class Container,
|
||||
class = std::enable_if_t<
|
||||
!details::is_basic_string_span<Container>::value &&
|
||||
std::is_convertible<typename Container::pointer, pointer>::value &&
|
||||
std::is_convertible<typename Container::pointer,
|
||||
decltype(std::declval<Container>().data())>::value>>
|
||||
constexpr basic_string_span(const Container& cont) : span_(cont)
|
||||
{}
|
||||
|
||||
// from string_span
|
||||
template <
|
||||
class OtherValueType, std::ptrdiff_t OtherExtent,
|
||||
class = std::enable_if_t<std::is_convertible<
|
||||
typename basic_string_span<OtherValueType, OtherExtent>::impl_type, impl_type>::value>>
|
||||
constexpr basic_string_span(basic_string_span<OtherValueType, OtherExtent> other)
|
||||
: span_(other.data(), other.length())
|
||||
{}
|
||||
|
||||
template <index_type Count>
|
||||
constexpr basic_string_span<element_type, Count> first() const
|
||||
{
|
||||
return {span_.template first<Count>()};
|
||||
}
|
||||
|
||||
constexpr basic_string_span<element_type, dynamic_extent> first(index_type count) const
|
||||
{
|
||||
return {span_.first(count)};
|
||||
}
|
||||
|
||||
template <index_type Count>
|
||||
constexpr basic_string_span<element_type, Count> last() const
|
||||
{
|
||||
return {span_.template last<Count>()};
|
||||
}
|
||||
|
||||
constexpr basic_string_span<element_type, dynamic_extent> last(index_type count) const
|
||||
{
|
||||
return {span_.last(count)};
|
||||
}
|
||||
|
||||
template <index_type Offset, index_type Count>
|
||||
constexpr basic_string_span<element_type, Count> subspan() const
|
||||
{
|
||||
return {span_.template subspan<Offset, Count>()};
|
||||
}
|
||||
|
||||
constexpr basic_string_span<element_type, dynamic_extent>
|
||||
subspan(index_type offset, index_type count = dynamic_extent) const
|
||||
{
|
||||
return {span_.subspan(offset, count)};
|
||||
}
|
||||
|
||||
constexpr reference operator[](index_type idx) const { return span_[idx]; }
|
||||
constexpr reference operator()(index_type idx) const { return span_[idx]; }
|
||||
|
||||
constexpr pointer data() const { return span_.data(); }
|
||||
|
||||
constexpr index_type length() const noexcept { return span_.size(); }
|
||||
constexpr index_type size() const noexcept { return span_.size(); }
|
||||
constexpr index_type size_bytes() const noexcept { return span_.size_bytes(); }
|
||||
constexpr index_type length_bytes() const noexcept { return span_.length_bytes(); }
|
||||
constexpr bool empty() const noexcept { return size() == 0; }
|
||||
|
||||
constexpr iterator begin() const noexcept { return span_.begin(); }
|
||||
constexpr iterator end() const noexcept { return span_.end(); }
|
||||
|
||||
constexpr const_iterator cbegin() const noexcept { return span_.cbegin(); }
|
||||
constexpr const_iterator cend() const noexcept { return span_.cend(); }
|
||||
|
||||
constexpr reverse_iterator rbegin() const noexcept { return span_.rbegin(); }
|
||||
constexpr reverse_iterator rend() const noexcept { return span_.rend(); }
|
||||
|
||||
constexpr const_reverse_iterator crbegin() const noexcept { return span_.crbegin(); }
|
||||
constexpr const_reverse_iterator crend() const noexcept { return span_.crend(); }
|
||||
|
||||
private:
|
||||
static impl_type remove_z(pointer const& sz, std::ptrdiff_t max)
|
||||
{
|
||||
return {sz, details::string_length(sz, max)};
|
||||
}
|
||||
|
||||
template <std::size_t N>
|
||||
static impl_type remove_z(element_type (&sz)[N])
|
||||
{
|
||||
return remove_z(&sz[0], narrow_cast<std::ptrdiff_t>(N));
|
||||
}
|
||||
|
||||
impl_type span_;
|
||||
};
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using string_span = basic_string_span<char, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using cstring_span = basic_string_span<const char, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using wstring_span = basic_string_span<wchar_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using cwstring_span = basic_string_span<const wchar_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using u16string_span = basic_string_span<char16_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using cu16string_span = basic_string_span<const char16_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using u32string_span = basic_string_span<char32_t, Extent>;
|
||||
|
||||
template <std::ptrdiff_t Extent = dynamic_extent>
|
||||
using cu32string_span = basic_string_span<const char32_t, Extent>;
|
||||
|
||||
//
|
||||
// to_string() allow (explicit) conversions from string_span to string
|
||||
//
|
||||
|
||||
template <typename CharT, std::ptrdiff_t Extent>
|
||||
std::basic_string<typename std::remove_const<CharT>::type>
|
||||
to_string(basic_string_span<CharT, Extent> view)
|
||||
{
|
||||
return {view.data(), narrow_cast<std::size_t>(view.length())};
|
||||
}
|
||||
|
||||
template <typename CharT, typename Traits = typename std::char_traits<CharT>,
|
||||
typename Allocator = std::allocator<CharT>, typename gCharT, std::ptrdiff_t Extent>
|
||||
std::basic_string<CharT, Traits, Allocator> to_basic_string(basic_string_span<gCharT, Extent> view)
|
||||
{
|
||||
return {view.data(), narrow_cast<std::size_t>(view.length())};
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent>
|
||||
basic_string_span<const byte, details::calculate_byte_size<ElementType, Extent>::value>
|
||||
as_bytes(basic_string_span<ElementType, Extent> s) noexcept
|
||||
{
|
||||
GSL_SUPPRESS(type.1) // NO-FORMAT: attribute
|
||||
return {reinterpret_cast<const byte*>(s.data()), s.size_bytes()};
|
||||
}
|
||||
|
||||
template <class ElementType, std::ptrdiff_t Extent,
|
||||
class = std::enable_if_t<!std::is_const<ElementType>::value>>
|
||||
basic_string_span<byte, details::calculate_byte_size<ElementType, Extent>::value>
|
||||
as_writeable_bytes(basic_string_span<ElementType, Extent> s) noexcept
|
||||
{
|
||||
GSL_SUPPRESS(type.1) // NO-FORMAT: attribute
|
||||
return {reinterpret_cast<byte*>(s.data()), s.size_bytes()};
|
||||
}
|
||||
|
||||
// zero-terminated string span, used to convert
|
||||
// zero-terminated spans to legacy strings
|
||||
template <typename CharT, std::ptrdiff_t Extent = dynamic_extent>
|
||||
class basic_zstring_span {
|
||||
public:
|
||||
using value_type = CharT;
|
||||
using const_value_type = std::add_const_t<CharT>;
|
||||
|
||||
using pointer = std::add_pointer_t<value_type>;
|
||||
using const_pointer = std::add_pointer_t<const_value_type>;
|
||||
|
||||
using zstring_type = basic_zstring<value_type, Extent>;
|
||||
using const_zstring_type = basic_zstring<const_value_type, Extent>;
|
||||
|
||||
using impl_type = span<value_type, Extent>;
|
||||
using string_span_type = basic_string_span<value_type, Extent>;
|
||||
|
||||
constexpr basic_zstring_span(impl_type s) : span_(s)
|
||||
{
|
||||
// expects a zero-terminated span
|
||||
Expects(s[s.size() - 1] == '\0');
|
||||
}
|
||||
|
||||
// copy
|
||||
constexpr basic_zstring_span(const basic_zstring_span& other) = default;
|
||||
|
||||
// move
|
||||
constexpr basic_zstring_span(basic_zstring_span&& other) = default;
|
||||
|
||||
// assign
|
||||
constexpr basic_zstring_span& operator=(const basic_zstring_span& other) = default;
|
||||
|
||||
// move assign
|
||||
constexpr basic_zstring_span& operator=(basic_zstring_span&& other) = default;
|
||||
|
||||
constexpr bool empty() const noexcept { return span_.size() == 0; }
|
||||
|
||||
constexpr string_span_type as_string_span() const noexcept
|
||||
{
|
||||
const auto sz = span_.size();
|
||||
return {span_.data(), sz > 1 ? sz - 1 : 0};
|
||||
}
|
||||
constexpr string_span_type ensure_z() const { return gsl::ensure_z(span_); }
|
||||
|
||||
constexpr const_zstring_type assume_z() const noexcept { return span_.data(); }
|
||||
|
||||
private:
|
||||
impl_type span_;
|
||||
};
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using zstring_span = basic_zstring_span<char, Max>;
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using wzstring_span = basic_zstring_span<wchar_t, Max>;
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using u16zstring_span = basic_zstring_span<char16_t, Max>;
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using u32zstring_span = basic_zstring_span<char32_t, Max>;
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using czstring_span = basic_zstring_span<const char, Max>;
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using cwzstring_span = basic_zstring_span<const wchar_t, Max>;
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using cu16zstring_span = basic_zstring_span<const char16_t, Max>;
|
||||
|
||||
template <std::ptrdiff_t Max = dynamic_extent>
|
||||
using cu32zstring_span = basic_zstring_span<const char32_t, Max>;
|
||||
|
||||
// operator ==
|
||||
template <class CharT, std::ptrdiff_t Extent, class T,
|
||||
class = std::enable_if_t<
|
||||
details::is_basic_string_span<T>::value ||
|
||||
std::is_convertible<T, gsl::basic_string_span<std::add_const_t<CharT>>>::value>>
|
||||
bool operator==(const gsl::basic_string_span<CharT, Extent>& one, const T& other)
|
||||
{
|
||||
const gsl::basic_string_span<std::add_const_t<CharT>> tmp(other);
|
||||
return std::equal(one.begin(), one.end(), tmp.begin(), tmp.end());
|
||||
}
|
||||
|
||||
template <class CharT, std::ptrdiff_t Extent, class T,
|
||||
class = std::enable_if_t<
|
||||
!details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<T, gsl::basic_string_span<std::add_const_t<CharT>>>::value>>
|
||||
bool operator==(const T& one, const gsl::basic_string_span<CharT, Extent>& other)
|
||||
{
|
||||
const gsl::basic_string_span<std::add_const_t<CharT>> tmp(one);
|
||||
return std::equal(tmp.begin(), tmp.end(), other.begin(), other.end());
|
||||
}
|
||||
|
||||
// operator !=
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<std::is_convertible<
|
||||
T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value>>
|
||||
bool operator!=(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
return !(one == other);
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<
|
||||
std::is_convertible<T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value &&
|
||||
!gsl::details::is_basic_string_span<T>::value>>
|
||||
bool operator!=(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
return !(one == other);
|
||||
}
|
||||
|
||||
// operator<
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<std::is_convertible<
|
||||
T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value>>
|
||||
bool operator<(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
const gsl::basic_string_span<std::add_const_t<CharT>, Extent> tmp(other);
|
||||
return std::lexicographical_compare(one.begin(), one.end(), tmp.begin(), tmp.end());
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<
|
||||
std::is_convertible<T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value &&
|
||||
!gsl::details::is_basic_string_span<T>::value>>
|
||||
bool operator<(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
gsl::basic_string_span<std::add_const_t<CharT>, Extent> tmp(one);
|
||||
return std::lexicographical_compare(tmp.begin(), tmp.end(), other.begin(), other.end());
|
||||
}
|
||||
|
||||
#ifndef _MSC_VER
|
||||
|
||||
// VS treats temp and const containers as convertible to basic_string_span,
|
||||
// so the cases below are already covered by the previous operators
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator<(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
gsl::basic_string_span<std::add_const_t<CharT>, Extent> tmp(other);
|
||||
return std::lexicographical_compare(one.begin(), one.end(), tmp.begin(), tmp.end());
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator<(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
gsl::basic_string_span<std::add_const_t<CharT>, Extent> tmp(one);
|
||||
return std::lexicographical_compare(tmp.begin(), tmp.end(), other.begin(), other.end());
|
||||
}
|
||||
#endif
|
||||
|
||||
// operator <=
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<std::is_convertible<
|
||||
T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value>>
|
||||
bool operator<=(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
return !(other < one);
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<
|
||||
std::is_convertible<T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value &&
|
||||
!gsl::details::is_basic_string_span<T>::value>>
|
||||
bool operator<=(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
return !(other < one);
|
||||
}
|
||||
|
||||
#ifndef _MSC_VER
|
||||
|
||||
// VS treats temp and const containers as convertible to basic_string_span,
|
||||
// so the cases below are already covered by the previous operators
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator<=(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
return !(other < one);
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator<=(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
return !(other < one);
|
||||
}
|
||||
#endif
|
||||
|
||||
// operator>
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<std::is_convertible<
|
||||
T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value>>
|
||||
bool operator>(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
return other < one;
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<
|
||||
std::is_convertible<T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value &&
|
||||
!gsl::details::is_basic_string_span<T>::value>>
|
||||
bool operator>(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
return other < one;
|
||||
}
|
||||
|
||||
#ifndef _MSC_VER
|
||||
|
||||
// VS treats temp and const containers as convertible to basic_string_span,
|
||||
// so the cases below are already covered by the previous operators
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator>(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
return other < one;
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator>(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
return other < one;
|
||||
}
|
||||
#endif
|
||||
|
||||
// operator >=
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<std::is_convertible<
|
||||
T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value>>
|
||||
bool operator>=(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
return !(one < other);
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename = std::enable_if_t<
|
||||
std::is_convertible<T, gsl::basic_string_span<std::add_const_t<CharT>, Extent>>::value &&
|
||||
!gsl::details::is_basic_string_span<T>::value>>
|
||||
bool operator>=(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
return !(one < other);
|
||||
}
|
||||
|
||||
#ifndef _MSC_VER
|
||||
|
||||
// VS treats temp and const containers as convertible to basic_string_span,
|
||||
// so the cases below are already covered by the previous operators
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator>=(gsl::basic_string_span<CharT, Extent> one, const T& other)
|
||||
{
|
||||
return !(one < other);
|
||||
}
|
||||
|
||||
template <
|
||||
typename CharT, std::ptrdiff_t Extent = gsl::dynamic_extent, typename T,
|
||||
typename DataType = typename T::value_type,
|
||||
typename = std::enable_if_t<
|
||||
!gsl::details::is_span<T>::value && !gsl::details::is_basic_string_span<T>::value &&
|
||||
std::is_convertible<DataType*, CharT*>::value &&
|
||||
std::is_same<std::decay_t<decltype(std::declval<T>().size(), *std::declval<T>().data())>,
|
||||
DataType>::value>>
|
||||
bool operator>=(const T& one, gsl::basic_string_span<CharT, Extent> other)
|
||||
{
|
||||
return !(one < other);
|
||||
}
|
||||
#endif
|
||||
} // namespace gsl
|
||||
|
||||
#if defined(_MSC_VER) && !defined(__clang__)
|
||||
#pragma warning(pop)
|
||||
|
||||
#if _MSC_VER < 1910
|
||||
#undef constexpr
|
||||
#pragma pop_macro("constexpr")
|
||||
|
||||
#endif // _MSC_VER < 1910
|
||||
#endif // _MSC_VER
|
||||
|
||||
#endif // GSL_STRING_SPAN_H
|
||||
Reference in New Issue
Block a user