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Merge pull request #850 from beinhaerter/zstring_ctor

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zstring_span: fix for Expects, simplify functions
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Jordan Maples [MSFT] 2020-08-06 10:28:02 -07:00 committed by GitHub
commit 63379b7935
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1 changed files with 6 additions and 7 deletions
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13
include/gsl/string_span
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@ -120,9 +120,8 @@ span<T, dynamic_extent> ensure_sentinel(T* 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.
// ensure_z - creates a span for a zero terminated strings. The span will not contain the zero termination.
// 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,
@ -395,7 +394,8 @@ public:
constexpr basic_zstring_span(impl_type s) : span_(s)
{
// expects a zero-terminated span
Expects(s[s.size() - 1] == '\0');
Expects(s.size() > 0);
Expects(s[s.size() - 1] == value_type{});
}
// copy
@ -410,12 +410,11 @@ public:
// move assign
constexpr basic_zstring_span& operator=(basic_zstring_span&& other) = default;
constexpr bool empty() const noexcept { return span_.size() == 0; }
constexpr bool empty() const noexcept { return false; }
constexpr string_span_type as_string_span() const noexcept
{
const auto sz = span_.size();
return {span_.data(), sz > 1 ? sz - 1 : 0};
return {span_.data(), span_.size() - 1};
}
constexpr string_span_type ensure_z() const { return gsl::ensure_z(span_); }