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Add or modify basic_string_view typedefs to match TS. Add BOOST_CONSTEXPR and BOOST_NOEXCEPT where specified in the TS. Add swap, copy, and five compare compare signatures per TS. Untested except for typedefs.

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Beman 2015-07-06 11:24:27 -04:00
parent 57d2173de9
commit 250aaa73e8
2 changed files with 271 additions and 191 deletions
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457
include/boost/utility/string_view.hpp
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@ -40,104 +40,126 @@ namespace boost {
};
}
template<typename charT, typename traits>
template<typename charT, typename traits> // traits defaulted in string_view_fwd.hpp
class basic_string_view {
public:
// types
typedef traits traits_type;
typedef charT value_type;
typedef const charT* pointer;
typedef const charT& reference;
typedef const charT& const_viewerence;
typedef pointer const_iterator; // impl-defined
typedef const_iterator iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef const_reverse_iterator reverse_iterator;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
static BOOST_CONSTEXPR_OR_CONST size_type npos = size_type(-1);
// types
typedef traits traits_type;
typedef charT value_type;
typedef charT* pointer;
typedef const charT* const_pointer;
typedef charT& reference;
typedef const charT& const_reference;
typedef const_pointer const_iterator; // impl-defined
typedef const_iterator iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef const_reverse_iterator reverse_iterator;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
static BOOST_CONSTEXPR_OR_CONST size_type npos = size_type(-1);
// construct/copy
BOOST_CONSTEXPR basic_string_view ()
: ptr_(NULL), len_(0) {}
// construct/copy
BOOST_CONSTEXPR basic_string_view() BOOST_NOEXCEPT
: ptr_(NULL), len_(0) {}
BOOST_CONSTEXPR basic_string_view (const basic_string_view &rhs)
: ptr_(rhs.ptr_), len_(rhs.len_) {}
BOOST_CONSTEXPR basic_string_view(const basic_string_view &rhs) BOOST_NOEXCEPT
: ptr_(rhs.ptr_), len_(rhs.len_) {}
basic_string_view& operator=(const basic_string_view &rhs) {
ptr_ = rhs.ptr_;
len_ = rhs.len_;
return *this;
}
basic_string_view& operator=(const basic_string_view &rhs) BOOST_NOEXCEPT {
ptr_ = rhs.ptr_;
len_ = rhs.len_;
return *this;
}
basic_string_view(const charT* str)
: ptr_(str), len_(traits::length(str)) {}
BOOST_CONSTEXPR basic_string_view(const charT* str)
: ptr_(str), len_(traits::length(str)) {}
template<typename Allocator>
basic_string_view(const std::basic_string<charT, traits, Allocator>& str)
: ptr_(str.data()), len_(str.length()) {}
template<typename Allocator>
basic_string_view(const std::basic_string<charT, traits,
Allocator>& str) BOOST_NOEXCEPT
: ptr_(str.data()), len_(str.length()) {}
BOOST_CONSTEXPR basic_string_view(const charT* str, size_type len)
: ptr_(str), len_(len) {}
#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
template<typename Allocator>
explicit operator std::basic_string<charT, traits, Allocator>() const {
return std::basic_string<charT, traits, Allocator> ( begin(), end());
}
#endif
std::basic_string<charT, traits> to_string () const {
return std::basic_string<charT, traits> ( begin(), end());
}
BOOST_CONSTEXPR basic_string_view(const charT* str, size_type len)
: ptr_(str), len_(len) {}
// iterators
BOOST_CONSTEXPR const_iterator begin() const { return ptr_; }
BOOST_CONSTEXPR const_iterator cbegin() const { return ptr_; }
BOOST_CONSTEXPR const_iterator end() const { return ptr_ + len_; }
BOOST_CONSTEXPR const_iterator cend() const { return ptr_ + len_; }
const_reverse_iterator rbegin() const { return const_reverse_iterator (end()); }
const_reverse_iterator crbegin() const { return const_reverse_iterator (end()); }
const_reverse_iterator rend() const { return const_reverse_iterator (begin()); }
const_reverse_iterator crend() const { return const_reverse_iterator (begin()); }
BOOST_CONSTEXPR const_iterator begin() const BOOST_NOEXCEPT { return ptr_; }
BOOST_CONSTEXPR const_iterator cbegin() const BOOST_NOEXCEPT { return ptr_; }
BOOST_CONSTEXPR const_iterator end() const BOOST_NOEXCEPT { return ptr_ + len_; }
BOOST_CONSTEXPR const_iterator cend() const BOOST_NOEXCEPT { return ptr_ + len_; }
const_reverse_iterator rbegin() const BOOST_NOEXCEPT { return const_reverse_iterator (end()); }
const_reverse_iterator crbegin() const BOOST_NOEXCEPT { return const_reverse_iterator (end()); }
const_reverse_iterator rend() const BOOST_NOEXCEPT { return const_reverse_iterator (begin()); }
const_reverse_iterator crend() const BOOST_NOEXCEPT { return const_reverse_iterator (begin()); }
// capacity
BOOST_CONSTEXPR size_type size() const { return len_; }
BOOST_CONSTEXPR size_type length() const { return len_; }
BOOST_CONSTEXPR size_type max_size() const { return len_; }
BOOST_CONSTEXPR bool empty() const { return len_ == 0; }
BOOST_CONSTEXPR size_type size() const BOOST_NOEXCEPT { return len_; }
BOOST_CONSTEXPR size_type length() const BOOST_NOEXCEPT { return len_; }
BOOST_CONSTEXPR size_type max_size() const BOOST_NOEXCEPT { return len_; }
BOOST_CONSTEXPR bool empty() const BOOST_NOEXCEPT { return len_ == 0; }
// element access
BOOST_CONSTEXPR const charT& operator[](size_type pos) const { return ptr_[pos]; }
BOOST_CONSTEXPR const_reference operator[](size_type pos) const { return ptr_[pos]; }
const charT& at(size_t pos) const {
BOOST_CONSTEXPR const_reference at(size_t pos) const {
if ( pos >= len_ )
BOOST_THROW_EXCEPTION( std::out_of_range ( "boost::string_view::at" ) );
return ptr_[pos];
}
BOOST_CONSTEXPR const charT& front() const { return ptr_[0]; }
BOOST_CONSTEXPR const charT& back() const { return ptr_[len_-1]; }
BOOST_CONSTEXPR const charT* data() const { return ptr_; }
BOOST_CONSTEXPR const_reference front() const { return ptr_[0]; }
BOOST_CONSTEXPR const_reference back() const { return ptr_[len_-1]; }
BOOST_CONSTEXPR const_pointer data() const BOOST_NOEXCEPT { return ptr_; }
// modifiers
void clear() { len_ = 0; }
void remove_prefix(size_type n) {
void clear() { len_ = 0; } // Boost extension
BOOST_CONSTEXPR void remove_prefix(size_type n) {
if ( n > len_ )
n = len_;
ptr_ += n;
len_ -= n;
}
void remove_suffix(size_type n) {
BOOST_CONSTEXPR void remove_suffix(size_type n) {
if ( n > len_ )
n = len_;
len_ -= n;
}
BOOST_CONSTEXPR void swap(basic_string_view& s) BOOST_NOEXCEPT {
std::swap(ptr_, s.ptr_);
std::swap(len_, s.len_);
}
// basic_string_view string operations
basic_string_view substr(size_type pos, size_type n=npos) const {
#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
template<typename Allocator>
explicit operator std::basic_string<charT, traits, Allocator>() const {
return std::basic_string<charT, traits, Allocator>(begin(), end());
}
#endif
#ifndef BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
template<typename Allocator = std::allocator<charT> >
std::basic_string<charT, traits> to_string(const Allocator& a = Allocator()) const {
return std::basic_string<charT, traits, Allocator>(begin(), end(), a);
}
#else
std::basic_string<charT, traits> to_string() const {
return std::basic_string<charT, traits>(begin(), end());
}
#endif
size_type copy( charT* s, size_type n, size_type pos = 0 ) const {
if ( pos > size())
BOOST_THROW_EXCEPTION( std::out_of_range ( "string_view::copy" ) );
return std::copy_n(begin() + pos, (std::min)(n, len_ - pos), s);
}
BOOST_CONSTEXPR basic_string_view substr(size_type pos, size_type n=npos) const {
if ( pos > size())
BOOST_THROW_EXCEPTION( std::out_of_range ( "string_view::substr" ) );
if ( n == npos || pos + n > size())
@ -145,78 +167,99 @@ namespace boost {
return basic_string_view ( data() + pos, n );
}
int compare(basic_string_view x) const {
BOOST_CONSTEXPR int compare(basic_string_view x) const BOOST_NOEXCEPT {
const int cmp = traits::compare ( ptr_, x.ptr_, (std::min)(len_, x.len_));
return cmp != 0 ? cmp : ( len_ == x.len_ ? 0 : len_ < x.len_ ? -1 : 1 );
}
BOOST_CONSTEXPR int compare(size_type pos1, size_type n1, basic_string_view x)
const BOOST_NOEXCEPT {
return substr(pos1, n1).compare(x);
}
BOOST_CONSTEXPR int compare(size_type pos1, size_type n1,
basic_string_view x, size_type pos2, size_type n2) const {
return substr(pos1, n1).compare(x.substr(pos2, n2));
}
BOOST_CONSTEXPR int compare(const charT* x) const {
return compare(basic_string_view(x));
}
BOOST_CONSTEXPR int compare(size_type pos1, size_type n1, const charT* x) const {
return substr(pos1, n1).compare(basic_string_view(x));
}
BOOST_CONSTEXPR int compare(size_type pos1, size_type n1,
const charT* x, size_type n2) const {
return substr(pos1, n1).compare(basic_string_view(x, n2));
}
bool starts_with(charT c) const { return !empty() && traits::eq ( c, front()); }
bool starts_with(basic_string_view x) const {
BOOST_CONSTEXPR bool starts_with(charT c) const { // Boost extension
return !empty() && traits::eq ( c, front());
}
BOOST_CONSTEXPR bool starts_with(basic_string_view x) const { // Boost extension
return len_ >= x.len_ && traits::compare ( ptr_, x.ptr_, x.len_ ) == 0;
}
bool ends_with(charT c) const { return !empty() && traits::eq ( c, back()); }
bool ends_with(basic_string_view x) const {
BOOST_CONSTEXPR bool ends_with(charT c) const { return !empty() && traits::eq ( c, back()); } // Boost extension
BOOST_CONSTEXPR bool ends_with(basic_string_view x) const { // Boost extension
return len_ >= x.len_ && traits::compare ( ptr_ + len_ - x.len_, x.ptr_, x.len_ ) == 0;
}
size_type find(basic_string_view s) const {
BOOST_CONSTEXPR size_type find(basic_string_view s) const {
const_iterator iter = std::search ( this->cbegin (), this->cend (),
s.cbegin (), s.cend (), traits::eq );
return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
}
size_type find(charT c) const {
BOOST_CONSTEXPR size_type find(charT c) const BOOST_NOEXCEPT {
const_iterator iter = std::find_if ( this->cbegin (), this->cend (),
detail::string_view_traits_eq<charT, traits> ( c ));
return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
}
size_type rfind(basic_string_view s) const {
BOOST_CONSTEXPR size_type rfind(basic_string_view s) const BOOST_NOEXCEPT {
const_reverse_iterator iter = std::search ( this->crbegin (), this->crend (),
s.crbegin (), s.crend (), traits::eq );
return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
}
size_type rfind(charT c) const {
BOOST_CONSTEXPR size_type rfind(charT c) const BOOST_NOEXCEPT {
const_reverse_iterator iter = std::find_if ( this->crbegin (), this->crend (),
detail::string_view_traits_eq<charT, traits> ( c ));
return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
}
size_type find_first_of(charT c) const { return find (c); }
size_type find_last_of (charT c) const { return rfind (c); }
size_type find_first_of(basic_string_view s) const {
BOOST_CONSTEXPR size_type find_first_of(basic_string_view s) const BOOST_NOEXCEPT {
const_iterator iter = std::find_first_of
( this->cbegin (), this->cend (), s.cbegin (), s.cend (), traits::eq );
return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
}
BOOST_CONSTEXPR size_type find_first_of(charT c) const BOOST_NOEXCEPT { return find (c); }
size_type find_last_of(basic_string_view s) const {
BOOST_CONSTEXPR size_type find_last_of(basic_string_view s) const BOOST_NOEXCEPT {
const_reverse_iterator iter = std::find_first_of
( this->crbegin (), this->crend (), s.cbegin (), s.cend (), traits::eq );
return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter);
}
BOOST_CONSTEXPR size_type find_last_of (charT c) const BOOST_NOEXCEPT { return rfind (c); }
size_type find_first_not_of(basic_string_view s) const {
BOOST_CONSTEXPR size_type find_first_not_of(basic_string_view s) const {
const_iterator iter = find_not_of ( this->cbegin (), this->cend (), s );
return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
}
size_type find_first_not_of(charT c) const {
BOOST_CONSTEXPR size_type find_first_not_of(charT c) const BOOST_NOEXCEPT {
for ( const_iterator iter = this->cbegin (); iter != this->cend (); ++iter )
if ( !traits::eq ( c, *iter ))
return std::distance ( this->cbegin (), iter );
return npos;
}
size_type find_last_not_of(basic_string_view s) const {
BOOST_CONSTEXPR size_type find_last_not_of(basic_string_view s) const BOOST_NOEXCEPT {
const_reverse_iterator iter = find_not_of ( this->crbegin (), this->crend (), s );
return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
}
size_type find_last_not_of(charT c) const {
BOOST_CONSTEXPR size_type find_last_not_of(charT c) const BOOST_NOEXCEPT {
for ( const_reverse_iterator iter = this->crbegin (); iter != this->crend (); ++iter )
if ( !traits::eq ( c, *iter ))
return reverse_distance ( this->crbegin (), iter );
@ -247,159 +290,190 @@ namespace boost {
// Comparison operators
// Equality
template<typename charT, typename traits>
inline bool operator==(basic_string_view<charT, traits> x, basic_string_view<charT, traits> y) {
inline BOOST_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
if ( x.size () != y.size ()) return false;
return x.compare(y) == 0;
}
template<typename charT, typename traits, typename Allocator>
inline bool operator==(basic_string_view<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
return x == basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline bool operator==(const std::basic_string<charT, traits, Allocator> & x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) == y;
}
template<typename charT, typename traits>
inline bool operator==(basic_string_view<charT, traits> x, const charT * y) {
return x == basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline bool operator==(const charT * x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) == y;
}
// Inequality
template<typename charT, typename traits>
inline bool operator!=(basic_string_view<charT, traits> x, basic_string_view<charT, traits> y) {
inline BOOST_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
if ( x.size () != y.size ()) return true;
return x.compare(y) != 0;
}
template<typename charT, typename traits, typename Allocator>
inline bool operator!=(basic_string_view<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
return x != basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline bool operator!=(const std::basic_string<charT, traits, Allocator> & x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) != y;
}
template<typename charT, typename traits>
inline bool operator!=(basic_string_view<charT, traits> x, const charT * y) {
return x != basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline bool operator!=(const charT * x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) != y;
}
// Less than
template<typename charT, typename traits>
inline bool operator<(basic_string_view<charT, traits> x, basic_string_view<charT, traits> y) {
inline BOOST_CONSTEXPR bool operator<(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return x.compare(y) < 0;
}
template<typename charT, typename traits, typename Allocator>
inline bool operator<(basic_string_view<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
return x < basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline bool operator<(const std::basic_string<charT, traits, Allocator> & x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) < y;
}
template<typename charT, typename traits>
inline bool operator<(basic_string_view<charT, traits> x, const charT * y) {
return x < basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline bool operator<(const charT * x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) < y;
}
// Greater than
template<typename charT, typename traits>
inline bool operator>(basic_string_view<charT, traits> x, basic_string_view<charT, traits> y) {
inline bool operator>(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return x.compare(y) > 0;
}
template<typename charT, typename traits, typename Allocator>
inline bool operator>(basic_string_view<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
return x > basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline bool operator>(const std::basic_string<charT, traits, Allocator> & x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) > y;
}
template<typename charT, typename traits>
inline bool operator>(basic_string_view<charT, traits> x, const charT * y) {
return x > basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline bool operator>(const charT * x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) > y;
}
// Less than or equal to
template<typename charT, typename traits>
inline bool operator<=(basic_string_view<charT, traits> x, basic_string_view<charT, traits> y) {
inline BOOST_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return x.compare(y) <= 0;
}
template<typename charT, typename traits, typename Allocator>
inline bool operator<=(basic_string_view<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
return x <= basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline bool operator<=(const std::basic_string<charT, traits, Allocator> & x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) <= y;
}
template<typename charT, typename traits>
inline bool operator<=(basic_string_view<charT, traits> x, const charT * y) {
return x <= basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline bool operator<=(const charT * x, basic_string_view<charT, traits> y) {
return basic_string_view<charT, traits>(x) <= y;
}
// Greater than or equal to
template<typename charT, typename traits>
inline bool operator>=(basic_string_view<charT, traits> x, basic_string_view<charT, traits> y) {
inline BOOST_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return x.compare(y) >= 0;
}
// "sufficient additional overloads of comparison functions"
template<typename charT, typename traits, typename Allocator>
inline bool operator>=(basic_string_view<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
inline BOOST_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
return x == basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator==(const std::basic_string<charT, traits, Allocator> & x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) == y;
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
const charT * y) BOOST_NOEXCEPT {
return x == basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator==(const charT * x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) == y;
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
return x != basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator!=(const std::basic_string<charT, traits, Allocator> & x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) != y;
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
const charT * y) BOOST_NOEXCEPT {
return x != basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator!=(const charT * x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) != y;
}
template<typename charT, typename traits, typename Allocator>
inline bool operator<(basic_string_view<charT, traits> x,
const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
return x < basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline bool operator<(const std::basic_string<charT, traits, Allocator> & x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) < y;
}
template<typename charT, typename traits>
inline bool operator<(basic_string_view<charT, traits> x,
const charT * y) BOOST_NOEXCEPT {
return x < basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline bool operator<(const charT * x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) < y;
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
return x > basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator>(const std::basic_string<charT, traits, Allocator> & x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) > y;
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
const charT * y) BOOST_NOEXCEPT {
return x > basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator>(const charT * x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) > y;
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
return x <= basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator<=(const std::basic_string<charT, traits, Allocator> & x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) <= y;
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
const charT * y) BOOST_NOEXCEPT {
return x <= basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline BOOST_CONSTEXPR bool operator<=(const charT * x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) <= y;
}
template<typename charT, typename traits, typename Allocator>
inline BOOST_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
return x >= basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits, typename Allocator>
inline bool operator>=(const std::basic_string<charT, traits, Allocator> & x, basic_string_view<charT, traits> y) {
inline BOOST_CONSTEXPR bool operator>=(const std::basic_string<charT, traits, Allocator> & x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) >= y;
}
template<typename charT, typename traits>
inline bool operator>=(basic_string_view<charT, traits> x, const charT * y) {
inline BOOST_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
const charT * y) BOOST_NOEXCEPT {
return x >= basic_string_view<charT, traits>(y);
}
template<typename charT, typename traits>
inline bool operator>=(const charT * x, basic_string_view<charT, traits> y) {
inline BOOST_CONSTEXPR bool operator>=(const charT * x,
basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
return basic_string_view<charT, traits>(x) >= y;
}
@ -438,7 +512,8 @@ namespace boost {
// Inserter
template<class charT, class traits>
inline std::basic_ostream<charT, traits>&
operator<<(std::basic_ostream<charT, traits>& os, const basic_string_view<charT,traits>& str) {
operator<<(std::basic_ostream<charT, traits>& os,
const basic_string_view<charT,traits>& str) {
if (os.good()) {
const std::size_t size = str.size();
const std::size_t w = static_cast< std::size_t >(os.width());

5
test/string_view_test3.cpp
View File

@ -24,6 +24,11 @@ namespace
int main()
{
typedef boost::string_view::traits_type string_traits;
typedef boost::string_view::const_pointer const_pointer;
// swap
// copy
// compare, five new signatures
return boost::report_errors();
}