mirror of
https://github.com/microsoft/GSL.git
synced 2024-11-03 17:56:43 -05:00
Added operator==
This commit is contained in:
Anna Gringauze
parent
8c5d06dc79
commit
7077105b9d
@ -20,6 +20,7 @@
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#define GSL_STRING_SPAN_H
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#include "gsl_assert.h"
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#include "gsl_util.h"
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#include "span.h"
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#include <cstring>
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@ -97,7 +98,7 @@ span<T, dynamic_range> ensure_sentinel(T* seq, std::ptrdiff_t max = PTRDIFF_MAX)
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//
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// ensure_z - creates a string_span for a czstring or cwzstring.
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// ensure_z - creates a span for a czstring or cwzstring.
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// Will fail fast if a null-terminator cannot be found before
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// the limit of size_type.
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//
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@ -118,19 +119,22 @@ inline span<char, dynamic_range> ensure_z(char* const& sz, std::ptrdiff_t max)
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inline span<const char, dynamic_range> ensure_z(const char* const& sz, std::ptrdiff_t max)
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{
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auto len = strnlen(sz, max);
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Ensures(sz[len] == 0); return{ sz, static_cast<std::ptrdiff_t>(len) };
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Ensures(sz[len] == 0);
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return{ sz, static_cast<std::ptrdiff_t>(len) };
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}
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inline span<wchar_t, dynamic_range> ensure_z(wchar_t* const& sz, std::ptrdiff_t max)
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{
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auto len = wcsnlen(sz, max);
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Ensures(sz[len] == 0); return{ sz, static_cast<std::ptrdiff_t>(len) };
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Ensures(sz[len] == 0);
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return{ sz, static_cast<std::ptrdiff_t>(len) };
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}
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inline span<const wchar_t, dynamic_range> ensure_z(const wchar_t* const& sz, std::ptrdiff_t max)
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{
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auto len = wcsnlen(sz, max);
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Ensures(sz[len] == 0); return{ sz, static_cast<std::ptrdiff_t>(len) };
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Ensures(sz[len] == 0);
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return{ sz, static_cast<std::ptrdiff_t>(len) };
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}
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template<typename T, size_t N>
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@ -142,45 +146,7 @@ span<typename std::remove_pointer<typename Cont::pointer>::type, dynamic_range>
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return ensure_z(cont.data(), static_cast<std::ptrdiff_t>(cont.length()));
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}
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// TODO (neilmac) there is probably a better template-magic way to get the const and non-const overloads to share an implementation
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inline span<char, dynamic_range> remove_z(char* const& sz, std::ptrdiff_t max)
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{
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auto len = strnlen(sz, max);
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return{ sz, static_cast<std::ptrdiff_t>(len) };
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}
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inline span<const char, dynamic_range> remove_z(const char* const& sz, std::ptrdiff_t max)
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{
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auto len = strnlen(sz, max);
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return{ sz, static_cast<std::ptrdiff_t>(len) };
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}
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inline span<wchar_t, dynamic_range> remove_z(wchar_t* const& sz, std::ptrdiff_t max)
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{
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auto len = wcsnlen(sz, max);
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return{ sz, static_cast<std::ptrdiff_t>(len) };
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}
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inline span<const wchar_t, dynamic_range> remove_z(const wchar_t* const& sz, std::ptrdiff_t max)
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{
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auto len = wcsnlen(sz, max);
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return{ sz, static_cast<std::ptrdiff_t>(len) };
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}
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template<typename T, size_t N>
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span<T, dynamic_range> remove_z(T(&sz)[N])
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{
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return remove_z(&sz[0], static_cast<std::ptrdiff_t>(N));
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}
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template<class Cont>
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span<typename std::remove_pointer<typename Cont::pointer>::type, dynamic_range> remove_z(Cont& cont)
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{
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return remove_z(cont.data(), static_cast<std::ptrdiff_t>(cont.length()));
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}
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template<typename ValueType, std::ptrdiff_t>
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template<typename CharT, std::ptrdiff_t>
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class basic_string_span;
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namespace details
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@ -189,15 +155,56 @@ namespace details
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struct is_basic_string_span_oracle : std::false_type
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{};
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template <typename ValueType, std::ptrdiff_t Extent>
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struct is_basic_string_span_oracle<basic_string_span<ValueType, Extent>> : std::true_type
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template <typename CharT, std::ptrdiff_t Extent>
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struct is_basic_string_span_oracle<basic_string_span<CharT, Extent>> : std::true_type
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{};
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template <typename T>
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struct is_basic_string_span : is_basic_string_span_oracle<std::remove_cv_t<T>>
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{};
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template <typename T>
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struct length_func
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{};
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template <>
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struct length_func<char>
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{
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std::ptrdiff_t operator()(char* const ptr, std::ptrdiff_t length) noexcept
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{
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return narrow_cast<std::ptrdiff_t>(strnlen(ptr, length));
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}
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};
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template <>
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struct length_func<wchar_t>
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{
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std::ptrdiff_t operator()(wchar_t* const ptr, std::ptrdiff_t length) noexcept
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{
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return narrow_cast<std::ptrdiff_t>(wcsnlen(ptr, length));
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}
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};
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template <>
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struct length_func<const char>
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{
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std::ptrdiff_t operator()(const char* const ptr, std::ptrdiff_t length) noexcept
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{
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return narrow_cast<std::ptrdiff_t>(strnlen(ptr, length));
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}
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};
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template <>
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struct length_func<const wchar_t>
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{
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std::ptrdiff_t operator()(const wchar_t* const ptr, std::ptrdiff_t length) noexcept
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{
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return narrow_cast<std::ptrdiff_t>(wcsnlen(ptr, length));
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}
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};
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}
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//
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// string_span and relatives
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//
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@ -212,67 +219,56 @@ class basic_string_span
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using reference = std::add_lvalue_reference_t<value_type>;
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using const_reference = std::add_lvalue_reference_t<const_value_type>;
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using bounds_type = static_bounds<Extent>;
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using underlying_type = span<value_type, Extent>;
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using impl_type = span<value_type, Extent>;
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public:
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using size_type = ptrdiff_t;
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using iterator = typename underlying_type::iterator;
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using const_iterator = typename underlying_type::const_iterator;
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using reverse_iterator = typename underlying_type::reverse_iterator;
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using const_reverse_iterator = typename underlying_type::const_reverse_iterator;
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using iterator = typename impl_type::iterator;
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using const_iterator = typename impl_type::const_iterator;
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using reverse_iterator = typename impl_type::reverse_iterator;
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using const_reverse_iterator = typename impl_type::const_reverse_iterator;
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// empty
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constexpr basic_string_span() noexcept
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: real(nullptr)
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{}
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// default (empty)
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constexpr basic_string_span() = default;
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// copy
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constexpr basic_string_span(const basic_string_span& other) noexcept
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: real(other.real)
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{}
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constexpr basic_string_span(const basic_string_span& other) = default;
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// move
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constexpr basic_string_span(const basic_string_span&& other) noexcept
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: real(std::move(other.real))
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{}
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constexpr basic_string_span(basic_string_span&& other) = default;
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// assign
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constexpr basic_string_span& operator=(const basic_string_span& other) = default;
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// move assign
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constexpr basic_string_span& operator=(basic_string_span&& other) = default;
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// from nullptr and length
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constexpr basic_string_span(std::nullptr_t ptr, size_type length) noexcept
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: real(ptr, length)
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: span_(ptr, length)
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{}
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// For pointers and static arrays - if 0-terminated, remove 0 from the view
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// from c string
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constexpr basic_string_span(pointer& ptr) noexcept
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: real(ensure_z(ptr))
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{}
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// from non-const pointer to const span
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template<typename ValueType = std::remove_const_t<value_type>, bool Enabled = std::is_const<value_type>::value, typename Dummy = std::enable_if_t<Enabled>>
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constexpr basic_string_span(ValueType*& ptr) noexcept
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: real(ensure_z(ptr))
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{}
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// from raw data and length - remove 0 if needed
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// from raw data and length
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constexpr basic_string_span(pointer ptr, size_type length) noexcept
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: real(remove_z(ptr, length))
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: span_(remove_z(ptr, length))
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{}
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// from static arrays and string literals
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template<size_t N>
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constexpr basic_string_span(value_type(&arr)[N]) noexcept
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: real(remove_z(arr))
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: span_(remove_z(arr))
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{}
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// Those allow 0s in the middle, so we keep them
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// Those allow 0s within the length, so we do not remove them
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// from string
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constexpr basic_string_span(std::string& s) noexcept
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: real(&(s.at(0)), static_cast<ptrdiff_t>(s.length()))
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: span_(&(s.at(0)), narrow_cast<std::ptrdiff_t>(s.length()))
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{}
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// from containers. It must have .size() and .data() function signatures
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// from containers. Containers must have .size() and .data() function signatures
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template <typename Cont, typename DataType = typename Cont::value_type,
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typename Dummy = std::enable_if_t<!details::is_span<Cont>::value
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&& !details::is_basic_string_span<Cont>::value
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@ -281,16 +277,25 @@ public:
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&& std::is_same<std::decay_t<decltype(std::declval<Cont>().size(), *std::declval<Cont>().data())>, DataType>::value>
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>
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constexpr basic_string_span(Cont& cont)
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: real(cont.data(), cont.size())
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: span_(cont.data(), cont.size())
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{}
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// disallow creation from temporary containers and strings
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template <typename Cont, typename DataType = typename Cont::value_type,
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typename Dummy = std::enable_if_t<!details::is_span<Cont>::value
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&& !details::is_basic_string_span<Cont>::value
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&& std::is_convertible<DataType*, value_type*>::value
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&& std::is_same<std::decay_t<decltype(std::declval<Cont>().size(), *std::declval<Cont>().data())>, DataType>::value>
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>
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basic_string_span(Cont&& cont) = delete;
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// from span
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template <typename OtherValueType, std::ptrdiff_t OtherExtent,
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typename OtherBounds = static_bounds<OtherExtent>,
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typename Dummy = std::enable_if_t<std::is_convertible<OtherValueType*, value_type*>::value && std::is_convertible<OtherBounds, bounds_type>::value>
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>
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constexpr basic_string_span(const span<OtherValueType, OtherExtent>& other) noexcept
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: real(other)
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constexpr basic_string_span(span<OtherValueType, OtherExtent> other) noexcept
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: span_(other)
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{}
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// from string_span
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@ -298,131 +303,130 @@ public:
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typename OtherBounds = static_bounds<OtherExtent>,
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typename Dummy = std::enable_if_t<std::is_convertible<OtherValueType*, value_type*>::value && std::is_convertible<OtherBounds, bounds_type>::value>
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>
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constexpr basic_string_span(const basic_string_span<OtherValueType, OtherExtent>& other) noexcept
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: real(other.data(), other.length())
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constexpr basic_string_span(basic_string_span<OtherValueType, OtherExtent> other) noexcept
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: span_(other.data(), other.length())
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{}
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// section on linear space
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constexpr bool empty() const noexcept
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{
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return length() == 0;
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}
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// first Count elements
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template<size_type Count>
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constexpr basic_string_span<value_type, Count> first() const noexcept
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{
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return{ real.template first<Count>() };
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return{ span_.template first<Count>() };
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}
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constexpr basic_string_span<value_type, dynamic_range> first(size_type count) const noexcept
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{
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return{ real.first(count) };
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return{ span_.first(count) };
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}
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// last Count elements
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template<size_type Count>
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constexpr basic_string_span<value_type, Count> last() const noexcept
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{
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return{ real.template last<Count>() };
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return{ span_.template last<Count>() };
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}
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constexpr basic_string_span<value_type, dynamic_range> last(size_type count) const noexcept
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{
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return{ real.last(count) };
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return{ span_.last(count) };
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}
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// Count elements starting from Offset
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template<size_type Offset, size_type Count>
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constexpr basic_string_span<value_type, Count> sub() const noexcept
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{
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return{ real.template sub<Offset, Count>() };
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return{ span_.template sub<Offset, Count>() };
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}
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constexpr basic_string_span<value_type, dynamic_range> sub(size_type offset, size_type count = dynamic_range) const noexcept
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{
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return{ real.sub(offset, count) };
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return{ span_.sub(offset, count) };
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}
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constexpr const_reference operator[](size_type idx) const noexcept
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constexpr reference operator[](size_type idx) const noexcept
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{
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return real[idx];
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}
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constexpr reference operator[](size_type idx) noexcept
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{
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return real[idx];
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return span_[idx];
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}
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constexpr pointer data() const noexcept
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{
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return real.data();
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return span_.data();
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}
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constexpr size_type length() const noexcept
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{
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return real.size();
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return span_.size();
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}
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constexpr size_type size() const noexcept
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{
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return real.size();
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}
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constexpr size_type used_length() const noexcept
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{
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return length();
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return span_.size();
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}
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constexpr size_type bytes() const noexcept
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{
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return real.bytes();
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}
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constexpr size_type used_bytes() const noexcept
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{
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return bytes();
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}
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constexpr explicit operator bool() const noexcept
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{
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return real;
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return span_.bytes();
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}
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constexpr iterator begin() const noexcept
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{
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return real.begin();
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return span_.begin();
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}
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constexpr iterator end() const noexcept
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{
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return real.end();
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return span_.end();
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}
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constexpr const_iterator cbegin() const noexcept
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{
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return real.cbegin();
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return span_.cbegin();
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}
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constexpr const_iterator cend() const noexcept
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{
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real.cend();
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span_.cend();
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}
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constexpr reverse_iterator rbegin() const noexcept
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{
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return real.rbegin();
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return span_.rbegin();
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}
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constexpr reverse_iterator rend() const noexcept
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{
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return real.rend();
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return span_.rend();
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}
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constexpr const_reverse_iterator crbegin() const noexcept
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{
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return real.crbegin();
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return span_.crbegin();
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}
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constexpr const_reverse_iterator crend() const noexcept
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{
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return real.crend();
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return span_.crend();
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}
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private:
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span<CharT, Extent> real;
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static impl_type remove_z(pointer const& sz, std::ptrdiff_t max) noexcept
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{
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return{ sz, details::length_func<value_type>()(sz, max)};
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}
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template<size_t N>
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static impl_type remove_z(value_type(&sz)[N]) noexcept
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{
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return remove_z(&sz[0], narrow_cast<std::ptrdiff_t>(N));
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}
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impl_type span_;
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};
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template<std::ptrdiff_t Extent = dynamic_range>
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@ -476,6 +480,7 @@ template<typename CharT, size_t Extent = dynamic_range>
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class basic_zstring_builder
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{
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public:
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using impl_type = span<CharT, Extent>;
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using string_span_type = basic_string_span<CharT, Extent>;
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using value_type = CharT;
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using pointer = CharT*;
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@ -499,7 +504,7 @@ public:
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iterator end() const { return sv_.end(); }
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private:
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string_span_type sv_;
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impl_type sv_;
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};
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template <size_t Max = dynamic_range>
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@ -509,69 +514,36 @@ template <size_t Max = dynamic_range>
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using wzstring_builder = basic_zstring_builder<wchar_t, Max>;
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}
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/*
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bool operator==(const gsl::cstring_span<>& one, const gsl::cstring_span<>& other) noexcept
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template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_range>
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bool operator==(const gsl::basic_string_span<CharT, Extent>& one, const gsl::basic_string_span<CharT, Extent>& other) noexcept
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{
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return std::equal(one.begin(), one.end(), other.begin(), other.end());
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}
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bool operator==(const gsl::cwstring_span<>& one, const gsl::cwstring_span<>& other) noexcept
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{
|
||||
return std::equal(one.begin(), one.end(), other.begin(), other.end());
|
||||
}
|
||||
*/
|
||||
|
||||
|
||||
template <typename CharT>
|
||||
bool operator==(const gsl::basic_string_span<CharT, gsl::dynamic_range>& one, const gsl::basic_string_span<CharT, gsl::dynamic_range>& other) noexcept
|
||||
{
|
||||
return std::equal(one.begin(), one.end(), other.begin(), other.end());
|
||||
}
|
||||
|
||||
/*
|
||||
template <typename ValueType, std::ptrdiff_t Extent, typename OtherValueType, std::ptrdiff_t OtherExtent, typename Dummy = std::enable_if_t<std::is_same<std::remove_cv_t<ValueType>, std::remove_cv_t<OtherValueType>>::value>>
|
||||
constexpr bool operator==(const gsl::basic_string_span<const ValueType, Extent>& one, const gsl::basic_string_span<const OtherValueType, OtherExtent>& other) noexcept
|
||||
{
|
||||
return std::equal(one.begin(), one.end(), other.begin(), other.end());
|
||||
}
|
||||
*/
|
||||
/*
|
||||
template <typename ValueType, std::ptrdiff_t Extent, typename OtherValueType, std::ptrdiff_t OtherExtent, typename Dummy = std::enable_if_t<std::is_same<std::remove_cv_t<ValueType>, std::remove_cv_t<OtherValueType>>::value>>
|
||||
constexpr bool operator==(const gsl::basic_string_span<ValueType, Extent>& one, const gsl::basic_string_span<OtherValueType, OtherExtent>& other) noexcept
|
||||
{
|
||||
return std::equal(one.begin(), one.end(), other.begin(), other.end());
|
||||
}
|
||||
|
||||
template <typename ValueType, std::ptrdiff_t Extent, typename OtherValueType, std::ptrdiff_t OtherExtent, typename Dummy = std::enable_if_t<std::is_same<std::remove_cv_t<ValueType>, std::remove_cv_t<OtherValueType>>::value>>
|
||||
constexpr bool operator!=(const gsl::basic_string_span<ValueType, Extent>& one, const gsl::basic_string_span<OtherValueType, OtherExtent>& other) noexcept
|
||||
{
|
||||
return !(one == other);
|
||||
}
|
||||
|
||||
template <typename ValueType, std::ptrdiff_t Extent, typename OtherValueType, std::ptrdiff_t OtherExtent, typename Dummy = std::enable_if_t<std::is_same<std::remove_cv_t<ValueType>, std::remove_cv_t<OtherValueType>>::value>>
|
||||
constexpr bool operator<(const gsl::basic_string_span<ValueType, Extent>& one, const gsl::basic_string_span<OtherValueType, OtherExtent>& other) noexcept
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_range>
|
||||
bool operator<(const gsl::basic_string_span<CharT, Extent>& one, const gsl::basic_string_span<CharT, Extent>& other) noexcept
|
||||
{
|
||||
return std::lexicographical_compare(one.begin(), one.end(), other.begin(), other.end());
|
||||
}
|
||||
|
||||
template <typename ValueType, std::ptrdiff_t Extent, typename OtherValueType, std::ptrdiff_t OtherExtent, typename Dummy = std::enable_if_t<std::is_same<std::remove_cv_t<ValueType>, std::remove_cv_t<OtherValueType>>::value>>
|
||||
constexpr bool operator<=(const gsl::basic_string_span<ValueType, Extent>& one, const gsl::basic_string_span<OtherValueType, OtherExtent>& other) noexcept
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_range>
|
||||
bool operator<=(const gsl::basic_string_span<CharT, Extent>& one, const gsl::basic_string_span<CharT, Extent>& other) noexcept
|
||||
{
|
||||
return !(other < one);
|
||||
}
|
||||
|
||||
template <typename ValueType, std::ptrdiff_t Extent, typename OtherValueType, std::ptrdiff_t OtherExtent, typename Dummy = std::enable_if_t<std::is_same<std::remove_cv_t<ValueType>, std::remove_cv_t<OtherValueType>>::value>>
|
||||
constexpr bool operator>(const gsl::basic_string_span<ValueType, Extent>& one, const gsl::basic_string_span<OtherValueType, OtherExtent>& other) noexcept
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_range>
|
||||
bool operator>(const gsl::basic_string_span<CharT, Extent>& one, const gsl::basic_string_span<CharT, Extent>& other) noexcept
|
||||
{
|
||||
return other < one;
|
||||
}
|
||||
|
||||
template <typename ValueType, std::ptrdiff_t Extent, typename OtherValueType, std::ptrdiff_t OtherExtent, typename Dummy = std::enable_if_t<std::is_same<std::remove_cv_t<ValueType>, std::remove_cv_t<OtherValueType>>::value>>
|
||||
constexpr bool operator>=(const gsl::basic_string_span<ValueType, Extent>& one, const gsl::basic_string_span<OtherValueType, OtherExtent>& other) noexcept
|
||||
template <typename CharT, std::ptrdiff_t Extent = gsl::dynamic_range>
|
||||
bool operator>=(const gsl::basic_string_span<CharT, Extent>& one, const gsl::basic_string_span<CharT, Extent>& other) noexcept
|
||||
{
|
||||
return !(one < other);
|
||||
}
|
||||
*/
|
||||
|
||||
// VS 2013 workarounds
|
||||
#ifdef _MSC_VER
|
||||
|
||||
|
||||
@ -18,8 +18,6 @@
|
||||
#include <string_span.h>
|
||||
#include <vector>
|
||||
#include <cstdlib>
|
||||
#include <map>
|
||||
#include <unordered_map>
|
||||
|
||||
using namespace std;
|
||||
using namespace gsl;
|
||||
@ -116,7 +114,7 @@ SUITE(string_span_tests)
|
||||
CHECK(s2.length() == 5);
|
||||
}
|
||||
|
||||
TEST(ComparisonAndImplicitConstructors)
|
||||
TEST(EqualityAndImplicitConstructors)
|
||||
{
|
||||
{
|
||||
cstring_span<> span = "Hello";
|
||||
@ -151,6 +149,41 @@ SUITE(string_span_tests)
|
||||
|
||||
// comparison of the original data to string
|
||||
CHECK(span.data() == std::string("Hello"));
|
||||
}
|
||||
|
||||
{
|
||||
char ar[] = { 'H', 'e', 'l', 'l', 'o' };
|
||||
|
||||
string_span<> span = ar;
|
||||
|
||||
char ar1[] = "Hello";
|
||||
char ar2[10] = "Hello";
|
||||
char* ptr = ar;
|
||||
std::string str = "Hello";
|
||||
std::vector<char> vec = { 'H', 'e', 'l', 'l', 'o' };
|
||||
|
||||
// comparison to static array with no null termination
|
||||
CHECK(span == string_span<>(ar));
|
||||
|
||||
// comparison to static array with null at the end
|
||||
CHECK(span == string_span<>(ar1));
|
||||
|
||||
// comparison to static array with null in the middle
|
||||
CHECK(span == string_span<>(ar2));
|
||||
|
||||
// comparison to null-terminated c string
|
||||
CHECK(span == string_span<>(ptr, 5));
|
||||
|
||||
// comparison to string
|
||||
CHECK(span == string_span<>(str));
|
||||
|
||||
// comparison to vector of charaters with no null termination
|
||||
CHECK(span == string_span<>(vec));
|
||||
}
|
||||
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
{
|
||||
cstring_span<> span = "Hello";
|
||||
|
||||
CHECK(span == "Hello");
|
||||
CHECK(span == ar);
|
||||
@ -191,6 +224,7 @@ SUITE(string_span_tests)
|
||||
CHECK(_span == str);
|
||||
CHECK(_span == vec);
|
||||
}
|
||||
#endif
|
||||
|
||||
{
|
||||
std::vector<char> str1 = { 'H', 'e', 'l', 'l', 'o' };
|
||||
@ -203,6 +237,78 @@ SUITE(string_span_tests)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
TEST(ComparisonAndImplicitConstructors)
|
||||
{
|
||||
{
|
||||
cstring_span<> span = "Hello";
|
||||
|
||||
const char ar[] = { 'H', 'e', 'l', 'l', 'o' };
|
||||
const char ar1[] = "Hello";
|
||||
const char ar2[10] = "Hello";
|
||||
const char* ptr = "Hello";
|
||||
const std::string str = "Hello";
|
||||
const std::vector<char> vec = { 'H', 'e', 'l', 'l', 'o' };
|
||||
|
||||
// comparison to literal
|
||||
CHECK(span < cstring_span<>("Helloo"));
|
||||
CHECK(span > cstring_span<>("Hell"));
|
||||
|
||||
// comparison to static array with no null termination
|
||||
CHECK(span >= cstring_span<>(ar));
|
||||
|
||||
// comparison to static array with null at the end
|
||||
CHECK(span <= cstring_span<>(ar1));
|
||||
|
||||
// comparison to static array with null in the middle
|
||||
CHECK(span >= cstring_span<>(ar2));
|
||||
|
||||
// comparison to null-terminated c string
|
||||
CHECK(span <= cstring_span<>(ptr, 5));
|
||||
|
||||
// comparison to string
|
||||
CHECK(span >= cstring_span<>(str));
|
||||
|
||||
// comparison to vector of charaters with no null termination
|
||||
CHECK(span <= cstring_span<>(vec));
|
||||
}
|
||||
|
||||
{
|
||||
char ar[] = { 'H', 'e', 'l', 'l', 'o' };
|
||||
|
||||
string_span<> span = ar;
|
||||
|
||||
char larr[] = "Hell";
|
||||
char rarr[] = "Helloo";
|
||||
|
||||
char ar1[] = "Hello";
|
||||
char ar2[10] = "Hello";
|
||||
char* ptr = ar;
|
||||
std::string str = "Hello";
|
||||
std::vector<char> vec = { 'H', 'e', 'l', 'l', 'o' };
|
||||
|
||||
|
||||
// comparison to static array with no null termination
|
||||
CHECK(span <= string_span<>(ar));
|
||||
CHECK(span < string_span<>(rarr));
|
||||
CHECK(span > string_span<>(larr));
|
||||
|
||||
// comparison to static array with null at the end
|
||||
CHECK(span >= string_span<>(ar1));
|
||||
|
||||
// comparison to static array with null in the middle
|
||||
CHECK(span <= string_span<>(ar2));
|
||||
|
||||
// comparison to null-terminated c string
|
||||
CHECK(span >= string_span<>(ptr, 5));
|
||||
|
||||
// comparison to string
|
||||
CHECK(span <= string_span<>(str));
|
||||
|
||||
// comparison to vector of charaters with no null termination
|
||||
CHECK(span >= string_span<>(vec));
|
||||
}
|
||||
}
|
||||
TEST(EnzureRemoveZ)
|
||||
{
|
||||
// remove z from literals
|
||||
@ -226,39 +332,17 @@ SUITE(string_span_tests)
|
||||
ptr[1] = 'b';
|
||||
ptr[2] = '\0';
|
||||
|
||||
string_span<> span(ptr);
|
||||
string_span<> span = ensure_z(ptr);
|
||||
CHECK(span.length() == 2);
|
||||
|
||||
delete[] ptr;
|
||||
}
|
||||
|
||||
// ensuze z on c strings
|
||||
{
|
||||
char* ptr = new char[2];
|
||||
|
||||
ptr[0] = 'a';
|
||||
ptr[1] = 'b';
|
||||
|
||||
// do we want to have a constructor from pointer at all?
|
||||
// the behavior is unpredictable if the string is not 0-terminated
|
||||
|
||||
// CHECK_THROW((string_span<>(ptr).length() == 2), fail_fast);
|
||||
|
||||
cstring_span<> sp1{ ptr, 2 }; // good
|
||||
cstring_span<> sp2{ ptr, 3 }; // bad... but can't help there
|
||||
|
||||
CHECK(sp1[1] == 'b');
|
||||
CHECK_THROW((void)(sp1[2] == 'c'), fail_fast);
|
||||
|
||||
CHECK(sp2[1] == 'b');
|
||||
//CHECK_THROW((sp1[2] == 'c'), fail_fast); // buffer overflow
|
||||
|
||||
delete[] ptr;
|
||||
}
|
||||
}
|
||||
|
||||
TEST(Constructors)
|
||||
{
|
||||
// creating cstring_span
|
||||
|
||||
// from string temporary
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
{
|
||||
@ -363,14 +447,12 @@ SUITE(string_span_tests)
|
||||
CHECK(span.length() == 5);
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////
|
||||
// How string_span should behave with const data
|
||||
// creating string_span
|
||||
|
||||
// from string literal
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
string_span<> span = "Hello";
|
||||
CHECK(span.length() == 5);
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -401,12 +483,10 @@ SUITE(string_span_tests)
|
||||
|
||||
// from non-const ptr and length
|
||||
{
|
||||
// does not compile with GCC (ISO standard does not allows converting string literals to char*)
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
char* ptr = "Hello";
|
||||
char ar[] = { 'H', 'e', 'l', 'l', 'o' };
|
||||
char* ptr = ar;
|
||||
string_span<> span{ ptr, 5 };
|
||||
CHECK(span.length() == 5);
|
||||
#endif
|
||||
}
|
||||
|
||||
// from const string
|
||||
@ -459,11 +539,11 @@ SUITE(string_span_tests)
|
||||
CHECK(span.length() == 5);
|
||||
}
|
||||
|
||||
// from non-const span of non-const data from const vector (looks like a bug)
|
||||
// from non-const span of non-const data from const vector
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
const std::vector<char> vec = { 'H', 'e', 'l', 'l', 'o' };
|
||||
const span<char> inner = vec; // fix error (happens inside the constructor)
|
||||
const span<char> inner = vec;
|
||||
string_span<> span = inner;
|
||||
CHECK(span.length() == 5);
|
||||
#endif
|
||||
@ -500,12 +580,106 @@ SUITE(string_span_tests)
|
||||
// from const string_span of non-const data
|
||||
{
|
||||
std::vector<char> vec = { 'H', 'e', 'l', 'l', 'o' };
|
||||
const string_span<> tmp = vec; // what does "const span" mean?
|
||||
const string_span<> tmp = vec;
|
||||
string_span<> span = tmp;
|
||||
CHECK(span.length() == 5);
|
||||
}
|
||||
}
|
||||
|
||||
template<typename T>
|
||||
T move_wrapper(T&& t)
|
||||
{
|
||||
return std::move(t);
|
||||
}
|
||||
|
||||
template <class T>
|
||||
T create() { return T{}; }
|
||||
|
||||
template <class T>
|
||||
void use(basic_string_span<T, gsl::dynamic_range> s) {}
|
||||
|
||||
TEST(MoveConstructors)
|
||||
{
|
||||
// move string_span
|
||||
{
|
||||
cstring_span<> span = "Hello";
|
||||
auto span1 = std::move(span);
|
||||
CHECK(span1.length() == 5);
|
||||
}
|
||||
{
|
||||
cstring_span<> span = "Hello";
|
||||
auto span1 = move_wrapper(std::move(span));
|
||||
CHECK(span1.length() == 5);
|
||||
}
|
||||
{
|
||||
cstring_span<> span = "Hello";
|
||||
auto span1 = move_wrapper(std::move(span));
|
||||
CHECK(span1.length() == 5);
|
||||
}
|
||||
|
||||
// move span
|
||||
{
|
||||
span<const char> span = ensure_z("Hello");
|
||||
cstring_span<> span1 = std::move(span);
|
||||
CHECK(span1.length() == 5);
|
||||
}
|
||||
{
|
||||
span<const char> span = ensure_z("Hello");
|
||||
cstring_span<> span2 = move_wrapper(std::move(span));
|
||||
CHECK(span2.length() == 5);
|
||||
}
|
||||
|
||||
// move string
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
std::string str = "Hello";
|
||||
string_span<> span = std::move(str);
|
||||
CHECK(span.length() == 5);
|
||||
#endif
|
||||
}
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
std::string str = "Hello";
|
||||
string_span<> span = move_wrapper<std::string>(std::move(str));
|
||||
CHECK(span.length() == 5);
|
||||
#endif
|
||||
}
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
use<char>(create<string>());
|
||||
#endif
|
||||
}
|
||||
|
||||
// move container
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
std::vector<char> vec = { 'H', 'e', 'l', 'l', 'o' };
|
||||
string_span<> span = std::move(vec);
|
||||
CHECK(span.length() == 5);
|
||||
#endif
|
||||
}
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
std::vector<char> vec = { 'H', 'e', 'l', 'l', 'o' };
|
||||
string_span<> span = move_wrapper<std::vector<char>>(std::move(vec));
|
||||
CHECK(span.length() == 5);
|
||||
#endif
|
||||
}
|
||||
{
|
||||
#ifdef CONFIRM_COMPILATION_ERRORS
|
||||
use<char>(create<std::vector<char>>());
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
TEST(Conversion)
|
||||
{
|
||||
#ifdef CONFIRM_COMPPILATION_ERRORS
|
||||
cstring_span<> span = "Hello";
|
||||
cwstring_span<> wspan{ span };
|
||||
CHECK(wspan.length() == 5);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
int main(int, const char *[])
|
||||
|
||||
Loading…
Reference in New Issue
Block a user